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The WDCInterface is is a drop-in replacement for an EthernetInterface class that allows the user to connect to the Internet with a Wistron NeWeb Corporation (WNC) M14A2A Series data module using the standard network Socket API's. This interface class is used in the AT&T Cellular IoT Starter Kit which is sold by Avnet (http://cloudconnectkits.org/product/att-cellular-iot-starter-kit).

Dependencies: WncControllerK64F

Dependents: WNCProximityMqtt Pubnub_ATT_IoT_SK_WNC_sync BluemixDemo BluemixQS ... more

See the WNCInterface README in the Wiki tab for detailed information on this library.

mbedtls/source/ssl_tls.c@12:0071cb144c7a, 2016-11-01 (annotated)

Committer:: JMF
Date:: Tue Nov 01 14:22:56 2016 +0000
Revision:: 12:0071cb144c7a

Adding mbedtls files

Who changed what in which revision?

User	Revision	Line number	New contents of line
JMF	12:0071cb144c7a	1	/*
JMF	12:0071cb144c7a	2	* SSLv3/TLSv1 shared functions
JMF	12:0071cb144c7a	3	*
JMF	12:0071cb144c7a	4	* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
JMF	12:0071cb144c7a	5	* SPDX-License-Identifier: Apache-2.0
JMF	12:0071cb144c7a	6	*
JMF	12:0071cb144c7a	7	* Licensed under the Apache License, Version 2.0 (the "License"); you may
JMF	12:0071cb144c7a	8	* not use this file except in compliance with the License.
JMF	12:0071cb144c7a	9	* You may obtain a copy of the License at
JMF	12:0071cb144c7a	10	*
JMF	12:0071cb144c7a	11	* http://www.apache.org/licenses/LICENSE-2.0
JMF	12:0071cb144c7a	12	*
JMF	12:0071cb144c7a	13	* Unless required by applicable law or agreed to in writing, software
JMF	12:0071cb144c7a	14	* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
JMF	12:0071cb144c7a	15	* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
JMF	12:0071cb144c7a	16	* See the License for the specific language governing permissions and
JMF	12:0071cb144c7a	17	* limitations under the License.
JMF	12:0071cb144c7a	18	*
JMF	12:0071cb144c7a	19	* This file is part of mbed TLS (https://tls.mbed.org)
JMF	12:0071cb144c7a	20	*/
JMF	12:0071cb144c7a	21	/*
JMF	12:0071cb144c7a	22	* The SSL 3.0 specification was drafted by Netscape in 1996,
JMF	12:0071cb144c7a	23	* and became an IETF standard in 1999.
JMF	12:0071cb144c7a	24	*
JMF	12:0071cb144c7a	25	* http://wp.netscape.com/eng/ssl3/
JMF	12:0071cb144c7a	26	* http://www.ietf.org/rfc/rfc2246.txt
JMF	12:0071cb144c7a	27	* http://www.ietf.org/rfc/rfc4346.txt
JMF	12:0071cb144c7a	28	*/
JMF	12:0071cb144c7a	29
JMF	12:0071cb144c7a	30	#if !defined(MBEDTLS_CONFIG_FILE)
JMF	12:0071cb144c7a	31	#include "mbedtls/config.h"
JMF	12:0071cb144c7a	32	#else
JMF	12:0071cb144c7a	33	#include MBEDTLS_CONFIG_FILE
JMF	12:0071cb144c7a	34	#endif
JMF	12:0071cb144c7a	35
JMF	12:0071cb144c7a	36	#if defined(MBEDTLS_SSL_TLS_C)
JMF	12:0071cb144c7a	37
JMF	12:0071cb144c7a	38	#if defined(MBEDTLS_PLATFORM_C)
JMF	12:0071cb144c7a	39	#include "mbedtls/platform.h"
JMF	12:0071cb144c7a	40	#else
JMF	12:0071cb144c7a	41	#include <stdlib.h>
JMF	12:0071cb144c7a	42	#define mbedtls_calloc calloc
JMF	12:0071cb144c7a	43	#define mbedtls_free free
JMF	12:0071cb144c7a	44	#endif
JMF	12:0071cb144c7a	45
JMF	12:0071cb144c7a	46	#include "mbedtls/debug.h"
JMF	12:0071cb144c7a	47	#include "mbedtls/ssl.h"
JMF	12:0071cb144c7a	48	#include "mbedtls/ssl_internal.h"
JMF	12:0071cb144c7a	49
JMF	12:0071cb144c7a	50	#include <string.h>
JMF	12:0071cb144c7a	51
JMF	12:0071cb144c7a	52	#if defined(MBEDTLS_X509_CRT_PARSE_C) && \
JMF	12:0071cb144c7a	53	defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
JMF	12:0071cb144c7a	54	#include "mbedtls/oid.h"
JMF	12:0071cb144c7a	55	#endif
JMF	12:0071cb144c7a	56
JMF	12:0071cb144c7a	57	/* Implementation that should never be optimized out by the compiler */
JMF	12:0071cb144c7a	58	static void mbedtls_zeroize( void *v, size_t n ) {
JMF	12:0071cb144c7a	59	volatile unsigned char p = v; while( n-- ) p++ = 0;
JMF	12:0071cb144c7a	60	}
JMF	12:0071cb144c7a	61
JMF	12:0071cb144c7a	62	/* Length of the "epoch" field in the record header */
JMF	12:0071cb144c7a	63	static inline size_t ssl_ep_len( const mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	64	{
JMF	12:0071cb144c7a	65	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	66	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	67	return( 2 );
JMF	12:0071cb144c7a	68	#else
JMF	12:0071cb144c7a	69	((void) ssl);
JMF	12:0071cb144c7a	70	#endif
JMF	12:0071cb144c7a	71	return( 0 );
JMF	12:0071cb144c7a	72	}
JMF	12:0071cb144c7a	73
JMF	12:0071cb144c7a	74	/*
JMF	12:0071cb144c7a	75	* Start a timer.
JMF	12:0071cb144c7a	76	* Passing millisecs = 0 cancels a running timer.
JMF	12:0071cb144c7a	77	*/
JMF	12:0071cb144c7a	78	static void ssl_set_timer( mbedtls_ssl_context *ssl, uint32_t millisecs )
JMF	12:0071cb144c7a	79	{
JMF	12:0071cb144c7a	80	if( ssl->f_set_timer == NULL )
JMF	12:0071cb144c7a	81	return;
JMF	12:0071cb144c7a	82
JMF	12:0071cb144c7a	83	MBEDTLS_SSL_DEBUG_MSG( 3, ( "set_timer to %d ms", (int) millisecs ) );
JMF	12:0071cb144c7a	84	ssl->f_set_timer( ssl->p_timer, millisecs / 4, millisecs );
JMF	12:0071cb144c7a	85	}
JMF	12:0071cb144c7a	86
JMF	12:0071cb144c7a	87	/*
JMF	12:0071cb144c7a	88	* Return -1 is timer is expired, 0 if it isn't.
JMF	12:0071cb144c7a	89	*/
JMF	12:0071cb144c7a	90	static int ssl_check_timer( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	91	{
JMF	12:0071cb144c7a	92	if( ssl->f_get_timer == NULL )
JMF	12:0071cb144c7a	93	return( 0 );
JMF	12:0071cb144c7a	94
JMF	12:0071cb144c7a	95	if( ssl->f_get_timer( ssl->p_timer ) == 2 )
JMF	12:0071cb144c7a	96	{
JMF	12:0071cb144c7a	97	MBEDTLS_SSL_DEBUG_MSG( 3, ( "timer expired" ) );
JMF	12:0071cb144c7a	98	return( -1 );
JMF	12:0071cb144c7a	99	}
JMF	12:0071cb144c7a	100
JMF	12:0071cb144c7a	101	return( 0 );
JMF	12:0071cb144c7a	102	}
JMF	12:0071cb144c7a	103
JMF	12:0071cb144c7a	104	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	105	/*
JMF	12:0071cb144c7a	106	* Double the retransmit timeout value, within the allowed range,
JMF	12:0071cb144c7a	107	* returning -1 if the maximum value has already been reached.
JMF	12:0071cb144c7a	108	*/
JMF	12:0071cb144c7a	109	static int ssl_double_retransmit_timeout( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	110	{
JMF	12:0071cb144c7a	111	uint32_t new_timeout;
JMF	12:0071cb144c7a	112
JMF	12:0071cb144c7a	113	if( ssl->handshake->retransmit_timeout >= ssl->conf->hs_timeout_max )
JMF	12:0071cb144c7a	114	return( -1 );
JMF	12:0071cb144c7a	115
JMF	12:0071cb144c7a	116	new_timeout = 2 * ssl->handshake->retransmit_timeout;
JMF	12:0071cb144c7a	117
JMF	12:0071cb144c7a	118	/* Avoid arithmetic overflow and range overflow */
JMF	12:0071cb144c7a	119	if( new_timeout < ssl->handshake->retransmit_timeout \|\|
JMF	12:0071cb144c7a	120	new_timeout > ssl->conf->hs_timeout_max )
JMF	12:0071cb144c7a	121	{
JMF	12:0071cb144c7a	122	new_timeout = ssl->conf->hs_timeout_max;
JMF	12:0071cb144c7a	123	}
JMF	12:0071cb144c7a	124
JMF	12:0071cb144c7a	125	ssl->handshake->retransmit_timeout = new_timeout;
JMF	12:0071cb144c7a	126	MBEDTLS_SSL_DEBUG_MSG( 3, ( "update timeout value to %d millisecs",
JMF	12:0071cb144c7a	127	ssl->handshake->retransmit_timeout ) );
JMF	12:0071cb144c7a	128
JMF	12:0071cb144c7a	129	return( 0 );
JMF	12:0071cb144c7a	130	}
JMF	12:0071cb144c7a	131
JMF	12:0071cb144c7a	132	static void ssl_reset_retransmit_timeout( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	133	{
JMF	12:0071cb144c7a	134	ssl->handshake->retransmit_timeout = ssl->conf->hs_timeout_min;
JMF	12:0071cb144c7a	135	MBEDTLS_SSL_DEBUG_MSG( 3, ( "update timeout value to %d millisecs",
JMF	12:0071cb144c7a	136	ssl->handshake->retransmit_timeout ) );
JMF	12:0071cb144c7a	137	}
JMF	12:0071cb144c7a	138	#endif /* MBEDTLS_SSL_PROTO_DTLS */
JMF	12:0071cb144c7a	139
JMF	12:0071cb144c7a	140	#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
JMF	12:0071cb144c7a	141	/*
JMF	12:0071cb144c7a	142	* Convert max_fragment_length codes to length.
JMF	12:0071cb144c7a	143	* RFC 6066 says:
JMF	12:0071cb144c7a	144	* enum{
JMF	12:0071cb144c7a	145	* 2^9(1), 2^10(2), 2^11(3), 2^12(4), (255)
JMF	12:0071cb144c7a	146	* } MaxFragmentLength;
JMF	12:0071cb144c7a	147	* and we add 0 -> extension unused
JMF	12:0071cb144c7a	148	*/
JMF	12:0071cb144c7a	149	static unsigned int mfl_code_to_length[MBEDTLS_SSL_MAX_FRAG_LEN_INVALID] =
JMF	12:0071cb144c7a	150	{
JMF	12:0071cb144c7a	151	MBEDTLS_SSL_MAX_CONTENT_LEN, /* MBEDTLS_SSL_MAX_FRAG_LEN_NONE */
JMF	12:0071cb144c7a	152	512, /* MBEDTLS_SSL_MAX_FRAG_LEN_512 */
JMF	12:0071cb144c7a	153	1024, /* MBEDTLS_SSL_MAX_FRAG_LEN_1024 */
JMF	12:0071cb144c7a	154	2048, /* MBEDTLS_SSL_MAX_FRAG_LEN_2048 */
JMF	12:0071cb144c7a	155	4096, /* MBEDTLS_SSL_MAX_FRAG_LEN_4096 */
JMF	12:0071cb144c7a	156	};
JMF	12:0071cb144c7a	157	#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
JMF	12:0071cb144c7a	158
JMF	12:0071cb144c7a	159	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	160	static int ssl_session_copy( mbedtls_ssl_session dst, const mbedtls_ssl_session src )
JMF	12:0071cb144c7a	161	{
JMF	12:0071cb144c7a	162	mbedtls_ssl_session_free( dst );
JMF	12:0071cb144c7a	163	memcpy( dst, src, sizeof( mbedtls_ssl_session ) );
JMF	12:0071cb144c7a	164
JMF	12:0071cb144c7a	165	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	166	if( src->peer_cert != NULL )
JMF	12:0071cb144c7a	167	{
JMF	12:0071cb144c7a	168	int ret;
JMF	12:0071cb144c7a	169
JMF	12:0071cb144c7a	170	dst->peer_cert = mbedtls_calloc( 1, sizeof(mbedtls_x509_crt) );
JMF	12:0071cb144c7a	171	if( dst->peer_cert == NULL )
JMF	12:0071cb144c7a	172	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	173
JMF	12:0071cb144c7a	174	mbedtls_x509_crt_init( dst->peer_cert );
JMF	12:0071cb144c7a	175
JMF	12:0071cb144c7a	176	if( ( ret = mbedtls_x509_crt_parse_der( dst->peer_cert, src->peer_cert->raw.p,
JMF	12:0071cb144c7a	177	src->peer_cert->raw.len ) ) != 0 )
JMF	12:0071cb144c7a	178	{
JMF	12:0071cb144c7a	179	mbedtls_free( dst->peer_cert );
JMF	12:0071cb144c7a	180	dst->peer_cert = NULL;
JMF	12:0071cb144c7a	181	return( ret );
JMF	12:0071cb144c7a	182	}
JMF	12:0071cb144c7a	183	}
JMF	12:0071cb144c7a	184	#endif /* MBEDTLS_X509_CRT_PARSE_C */
JMF	12:0071cb144c7a	185
JMF	12:0071cb144c7a	186	#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	187	if( src->ticket != NULL )
JMF	12:0071cb144c7a	188	{
JMF	12:0071cb144c7a	189	dst->ticket = mbedtls_calloc( 1, src->ticket_len );
JMF	12:0071cb144c7a	190	if( dst->ticket == NULL )
JMF	12:0071cb144c7a	191	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	192
JMF	12:0071cb144c7a	193	memcpy( dst->ticket, src->ticket, src->ticket_len );
JMF	12:0071cb144c7a	194	}
JMF	12:0071cb144c7a	195	#endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */
JMF	12:0071cb144c7a	196
JMF	12:0071cb144c7a	197	return( 0 );
JMF	12:0071cb144c7a	198	}
JMF	12:0071cb144c7a	199	#endif /* MBEDTLS_SSL_CLI_C */
JMF	12:0071cb144c7a	200
JMF	12:0071cb144c7a	201	#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
JMF	12:0071cb144c7a	202	int (mbedtls_ssl_hw_record_init)( mbedtls_ssl_context ssl,
JMF	12:0071cb144c7a	203	const unsigned char key_enc, const unsigned char key_dec,
JMF	12:0071cb144c7a	204	size_t keylen,
JMF	12:0071cb144c7a	205	const unsigned char iv_enc, const unsigned char iv_dec,
JMF	12:0071cb144c7a	206	size_t ivlen,
JMF	12:0071cb144c7a	207	const unsigned char mac_enc, const unsigned char mac_dec,
JMF	12:0071cb144c7a	208	size_t maclen ) = NULL;
JMF	12:0071cb144c7a	209	int (mbedtls_ssl_hw_record_activate)( mbedtls_ssl_context ssl, int direction) = NULL;
JMF	12:0071cb144c7a	210	int (mbedtls_ssl_hw_record_reset)( mbedtls_ssl_context ssl ) = NULL;
JMF	12:0071cb144c7a	211	int (mbedtls_ssl_hw_record_write)( mbedtls_ssl_context ssl ) = NULL;
JMF	12:0071cb144c7a	212	int (mbedtls_ssl_hw_record_read)( mbedtls_ssl_context ssl ) = NULL;
JMF	12:0071cb144c7a	213	int (mbedtls_ssl_hw_record_finish)( mbedtls_ssl_context ssl ) = NULL;
JMF	12:0071cb144c7a	214	#endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */
JMF	12:0071cb144c7a	215
JMF	12:0071cb144c7a	216	/*
JMF	12:0071cb144c7a	217	* Key material generation
JMF	12:0071cb144c7a	218	*/
JMF	12:0071cb144c7a	219	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	220	static int ssl3_prf( const unsigned char *secret, size_t slen,
JMF	12:0071cb144c7a	221	const char *label,
JMF	12:0071cb144c7a	222	const unsigned char *random, size_t rlen,
JMF	12:0071cb144c7a	223	unsigned char *dstbuf, size_t dlen )
JMF	12:0071cb144c7a	224	{
JMF	12:0071cb144c7a	225	size_t i;
JMF	12:0071cb144c7a	226	mbedtls_md5_context md5;
JMF	12:0071cb144c7a	227	mbedtls_sha1_context sha1;
JMF	12:0071cb144c7a	228	unsigned char padding[16];
JMF	12:0071cb144c7a	229	unsigned char sha1sum[20];
JMF	12:0071cb144c7a	230	((void)label);
JMF	12:0071cb144c7a	231
JMF	12:0071cb144c7a	232	mbedtls_md5_init( &md5 );
JMF	12:0071cb144c7a	233	mbedtls_sha1_init( &sha1 );
JMF	12:0071cb144c7a	234
JMF	12:0071cb144c7a	235	/*
JMF	12:0071cb144c7a	236	* SSLv3:
JMF	12:0071cb144c7a	237	* block =
JMF	12:0071cb144c7a	238	* MD5( secret + SHA1( 'A' + secret + random ) ) +
JMF	12:0071cb144c7a	239	* MD5( secret + SHA1( 'BB' + secret + random ) ) +
JMF	12:0071cb144c7a	240	* MD5( secret + SHA1( 'CCC' + secret + random ) ) +
JMF	12:0071cb144c7a	241	* ...
JMF	12:0071cb144c7a	242	*/
JMF	12:0071cb144c7a	243	for( i = 0; i < dlen / 16; i++ )
JMF	12:0071cb144c7a	244	{
JMF	12:0071cb144c7a	245	memset( padding, (unsigned char) ('A' + i), 1 + i );
JMF	12:0071cb144c7a	246
JMF	12:0071cb144c7a	247	mbedtls_sha1_starts( &sha1 );
JMF	12:0071cb144c7a	248	mbedtls_sha1_update( &sha1, padding, 1 + i );
JMF	12:0071cb144c7a	249	mbedtls_sha1_update( &sha1, secret, slen );
JMF	12:0071cb144c7a	250	mbedtls_sha1_update( &sha1, random, rlen );
JMF	12:0071cb144c7a	251	mbedtls_sha1_finish( &sha1, sha1sum );
JMF	12:0071cb144c7a	252
JMF	12:0071cb144c7a	253	mbedtls_md5_starts( &md5 );
JMF	12:0071cb144c7a	254	mbedtls_md5_update( &md5, secret, slen );
JMF	12:0071cb144c7a	255	mbedtls_md5_update( &md5, sha1sum, 20 );
JMF	12:0071cb144c7a	256	mbedtls_md5_finish( &md5, dstbuf + i * 16 );
JMF	12:0071cb144c7a	257	}
JMF	12:0071cb144c7a	258
JMF	12:0071cb144c7a	259	mbedtls_md5_free( &md5 );
JMF	12:0071cb144c7a	260	mbedtls_sha1_free( &sha1 );
JMF	12:0071cb144c7a	261
JMF	12:0071cb144c7a	262	mbedtls_zeroize( padding, sizeof( padding ) );
JMF	12:0071cb144c7a	263	mbedtls_zeroize( sha1sum, sizeof( sha1sum ) );
JMF	12:0071cb144c7a	264
JMF	12:0071cb144c7a	265	return( 0 );
JMF	12:0071cb144c7a	266	}
JMF	12:0071cb144c7a	267	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	268
JMF	12:0071cb144c7a	269	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	270	static int tls1_prf( const unsigned char *secret, size_t slen,
JMF	12:0071cb144c7a	271	const char *label,
JMF	12:0071cb144c7a	272	const unsigned char *random, size_t rlen,
JMF	12:0071cb144c7a	273	unsigned char *dstbuf, size_t dlen )
JMF	12:0071cb144c7a	274	{
JMF	12:0071cb144c7a	275	size_t nb, hs;
JMF	12:0071cb144c7a	276	size_t i, j, k;
JMF	12:0071cb144c7a	277	const unsigned char S1, S2;
JMF	12:0071cb144c7a	278	unsigned char tmp[128];
JMF	12:0071cb144c7a	279	unsigned char h_i[20];
JMF	12:0071cb144c7a	280	const mbedtls_md_info_t *md_info;
JMF	12:0071cb144c7a	281	mbedtls_md_context_t md_ctx;
JMF	12:0071cb144c7a	282	int ret;
JMF	12:0071cb144c7a	283
JMF	12:0071cb144c7a	284	mbedtls_md_init( &md_ctx );
JMF	12:0071cb144c7a	285
JMF	12:0071cb144c7a	286	if( sizeof( tmp ) < 20 + strlen( label ) + rlen )
JMF	12:0071cb144c7a	287	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	288
JMF	12:0071cb144c7a	289	hs = ( slen + 1 ) / 2;
JMF	12:0071cb144c7a	290	S1 = secret;
JMF	12:0071cb144c7a	291	S2 = secret + slen - hs;
JMF	12:0071cb144c7a	292
JMF	12:0071cb144c7a	293	nb = strlen( label );
JMF	12:0071cb144c7a	294	memcpy( tmp + 20, label, nb );
JMF	12:0071cb144c7a	295	memcpy( tmp + 20 + nb, random, rlen );
JMF	12:0071cb144c7a	296	nb += rlen;
JMF	12:0071cb144c7a	297
JMF	12:0071cb144c7a	298	/*
JMF	12:0071cb144c7a	299	* First compute P_md5(secret,label+random)[0..dlen]
JMF	12:0071cb144c7a	300	*/
JMF	12:0071cb144c7a	301	if( ( md_info = mbedtls_md_info_from_type( MBEDTLS_MD_MD5 ) ) == NULL )
JMF	12:0071cb144c7a	302	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	303
JMF	12:0071cb144c7a	304	if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 1 ) ) != 0 )
JMF	12:0071cb144c7a	305	return( ret );
JMF	12:0071cb144c7a	306
JMF	12:0071cb144c7a	307	mbedtls_md_hmac_starts( &md_ctx, S1, hs );
JMF	12:0071cb144c7a	308	mbedtls_md_hmac_update( &md_ctx, tmp + 20, nb );
JMF	12:0071cb144c7a	309	mbedtls_md_hmac_finish( &md_ctx, 4 + tmp );
JMF	12:0071cb144c7a	310
JMF	12:0071cb144c7a	311	for( i = 0; i < dlen; i += 16 )
JMF	12:0071cb144c7a	312	{
JMF	12:0071cb144c7a	313	mbedtls_md_hmac_reset ( &md_ctx );
JMF	12:0071cb144c7a	314	mbedtls_md_hmac_update( &md_ctx, 4 + tmp, 16 + nb );
JMF	12:0071cb144c7a	315	mbedtls_md_hmac_finish( &md_ctx, h_i );
JMF	12:0071cb144c7a	316
JMF	12:0071cb144c7a	317	mbedtls_md_hmac_reset ( &md_ctx );
JMF	12:0071cb144c7a	318	mbedtls_md_hmac_update( &md_ctx, 4 + tmp, 16 );
JMF	12:0071cb144c7a	319	mbedtls_md_hmac_finish( &md_ctx, 4 + tmp );
JMF	12:0071cb144c7a	320
JMF	12:0071cb144c7a	321	k = ( i + 16 > dlen ) ? dlen % 16 : 16;
JMF	12:0071cb144c7a	322
JMF	12:0071cb144c7a	323	for( j = 0; j < k; j++ )
JMF	12:0071cb144c7a	324	dstbuf[i + j] = h_i[j];
JMF	12:0071cb144c7a	325	}
JMF	12:0071cb144c7a	326
JMF	12:0071cb144c7a	327	mbedtls_md_free( &md_ctx );
JMF	12:0071cb144c7a	328
JMF	12:0071cb144c7a	329	/*
JMF	12:0071cb144c7a	330	* XOR out with P_sha1(secret,label+random)[0..dlen]
JMF	12:0071cb144c7a	331	*/
JMF	12:0071cb144c7a	332	if( ( md_info = mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 ) ) == NULL )
JMF	12:0071cb144c7a	333	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	334
JMF	12:0071cb144c7a	335	if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 1 ) ) != 0 )
JMF	12:0071cb144c7a	336	return( ret );
JMF	12:0071cb144c7a	337
JMF	12:0071cb144c7a	338	mbedtls_md_hmac_starts( &md_ctx, S2, hs );
JMF	12:0071cb144c7a	339	mbedtls_md_hmac_update( &md_ctx, tmp + 20, nb );
JMF	12:0071cb144c7a	340	mbedtls_md_hmac_finish( &md_ctx, tmp );
JMF	12:0071cb144c7a	341
JMF	12:0071cb144c7a	342	for( i = 0; i < dlen; i += 20 )
JMF	12:0071cb144c7a	343	{
JMF	12:0071cb144c7a	344	mbedtls_md_hmac_reset ( &md_ctx );
JMF	12:0071cb144c7a	345	mbedtls_md_hmac_update( &md_ctx, tmp, 20 + nb );
JMF	12:0071cb144c7a	346	mbedtls_md_hmac_finish( &md_ctx, h_i );
JMF	12:0071cb144c7a	347
JMF	12:0071cb144c7a	348	mbedtls_md_hmac_reset ( &md_ctx );
JMF	12:0071cb144c7a	349	mbedtls_md_hmac_update( &md_ctx, tmp, 20 );
JMF	12:0071cb144c7a	350	mbedtls_md_hmac_finish( &md_ctx, tmp );
JMF	12:0071cb144c7a	351
JMF	12:0071cb144c7a	352	k = ( i + 20 > dlen ) ? dlen % 20 : 20;
JMF	12:0071cb144c7a	353
JMF	12:0071cb144c7a	354	for( j = 0; j < k; j++ )
JMF	12:0071cb144c7a	355	dstbuf[i + j] = (unsigned char)( dstbuf[i + j] ^ h_i[j] );
JMF	12:0071cb144c7a	356	}
JMF	12:0071cb144c7a	357
JMF	12:0071cb144c7a	358	mbedtls_md_free( &md_ctx );
JMF	12:0071cb144c7a	359
JMF	12:0071cb144c7a	360	mbedtls_zeroize( tmp, sizeof( tmp ) );
JMF	12:0071cb144c7a	361	mbedtls_zeroize( h_i, sizeof( h_i ) );
JMF	12:0071cb144c7a	362
JMF	12:0071cb144c7a	363	return( 0 );
JMF	12:0071cb144c7a	364	}
JMF	12:0071cb144c7a	365	#endif /* MBEDTLS_SSL_PROTO_TLS1) \|\| MBEDTLS_SSL_PROTO_TLS1_1 */
JMF	12:0071cb144c7a	366
JMF	12:0071cb144c7a	367	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	368	static int tls_prf_generic( mbedtls_md_type_t md_type,
JMF	12:0071cb144c7a	369	const unsigned char *secret, size_t slen,
JMF	12:0071cb144c7a	370	const char *label,
JMF	12:0071cb144c7a	371	const unsigned char *random, size_t rlen,
JMF	12:0071cb144c7a	372	unsigned char *dstbuf, size_t dlen )
JMF	12:0071cb144c7a	373	{
JMF	12:0071cb144c7a	374	size_t nb;
JMF	12:0071cb144c7a	375	size_t i, j, k, md_len;
JMF	12:0071cb144c7a	376	unsigned char tmp[128];
JMF	12:0071cb144c7a	377	unsigned char h_i[MBEDTLS_MD_MAX_SIZE];
JMF	12:0071cb144c7a	378	const mbedtls_md_info_t *md_info;
JMF	12:0071cb144c7a	379	mbedtls_md_context_t md_ctx;
JMF	12:0071cb144c7a	380	int ret;
JMF	12:0071cb144c7a	381
JMF	12:0071cb144c7a	382	mbedtls_md_init( &md_ctx );
JMF	12:0071cb144c7a	383
JMF	12:0071cb144c7a	384	if( ( md_info = mbedtls_md_info_from_type( md_type ) ) == NULL )
JMF	12:0071cb144c7a	385	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	386
JMF	12:0071cb144c7a	387	md_len = mbedtls_md_get_size( md_info );
JMF	12:0071cb144c7a	388
JMF	12:0071cb144c7a	389	if( sizeof( tmp ) < md_len + strlen( label ) + rlen )
JMF	12:0071cb144c7a	390	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	391
JMF	12:0071cb144c7a	392	nb = strlen( label );
JMF	12:0071cb144c7a	393	memcpy( tmp + md_len, label, nb );
JMF	12:0071cb144c7a	394	memcpy( tmp + md_len + nb, random, rlen );
JMF	12:0071cb144c7a	395	nb += rlen;
JMF	12:0071cb144c7a	396
JMF	12:0071cb144c7a	397	/*
JMF	12:0071cb144c7a	398	* Compute P_<hash>(secret, label + random)[0..dlen]
JMF	12:0071cb144c7a	399	*/
JMF	12:0071cb144c7a	400	if ( ( ret = mbedtls_md_setup( &md_ctx, md_info, 1 ) ) != 0 )
JMF	12:0071cb144c7a	401	return( ret );
JMF	12:0071cb144c7a	402
JMF	12:0071cb144c7a	403	mbedtls_md_hmac_starts( &md_ctx, secret, slen );
JMF	12:0071cb144c7a	404	mbedtls_md_hmac_update( &md_ctx, tmp + md_len, nb );
JMF	12:0071cb144c7a	405	mbedtls_md_hmac_finish( &md_ctx, tmp );
JMF	12:0071cb144c7a	406
JMF	12:0071cb144c7a	407	for( i = 0; i < dlen; i += md_len )
JMF	12:0071cb144c7a	408	{
JMF	12:0071cb144c7a	409	mbedtls_md_hmac_reset ( &md_ctx );
JMF	12:0071cb144c7a	410	mbedtls_md_hmac_update( &md_ctx, tmp, md_len + nb );
JMF	12:0071cb144c7a	411	mbedtls_md_hmac_finish( &md_ctx, h_i );
JMF	12:0071cb144c7a	412
JMF	12:0071cb144c7a	413	mbedtls_md_hmac_reset ( &md_ctx );
JMF	12:0071cb144c7a	414	mbedtls_md_hmac_update( &md_ctx, tmp, md_len );
JMF	12:0071cb144c7a	415	mbedtls_md_hmac_finish( &md_ctx, tmp );
JMF	12:0071cb144c7a	416
JMF	12:0071cb144c7a	417	k = ( i + md_len > dlen ) ? dlen % md_len : md_len;
JMF	12:0071cb144c7a	418
JMF	12:0071cb144c7a	419	for( j = 0; j < k; j++ )
JMF	12:0071cb144c7a	420	dstbuf[i + j] = h_i[j];
JMF	12:0071cb144c7a	421	}
JMF	12:0071cb144c7a	422
JMF	12:0071cb144c7a	423	mbedtls_md_free( &md_ctx );
JMF	12:0071cb144c7a	424
JMF	12:0071cb144c7a	425	mbedtls_zeroize( tmp, sizeof( tmp ) );
JMF	12:0071cb144c7a	426	mbedtls_zeroize( h_i, sizeof( h_i ) );
JMF	12:0071cb144c7a	427
JMF	12:0071cb144c7a	428	return( 0 );
JMF	12:0071cb144c7a	429	}
JMF	12:0071cb144c7a	430
JMF	12:0071cb144c7a	431	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	432	static int tls_prf_sha256( const unsigned char *secret, size_t slen,
JMF	12:0071cb144c7a	433	const char *label,
JMF	12:0071cb144c7a	434	const unsigned char *random, size_t rlen,
JMF	12:0071cb144c7a	435	unsigned char *dstbuf, size_t dlen )
JMF	12:0071cb144c7a	436	{
JMF	12:0071cb144c7a	437	return( tls_prf_generic( MBEDTLS_MD_SHA256, secret, slen,
JMF	12:0071cb144c7a	438	label, random, rlen, dstbuf, dlen ) );
JMF	12:0071cb144c7a	439	}
JMF	12:0071cb144c7a	440	#endif /* MBEDTLS_SHA256_C */
JMF	12:0071cb144c7a	441
JMF	12:0071cb144c7a	442	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	443	static int tls_prf_sha384( const unsigned char *secret, size_t slen,
JMF	12:0071cb144c7a	444	const char *label,
JMF	12:0071cb144c7a	445	const unsigned char *random, size_t rlen,
JMF	12:0071cb144c7a	446	unsigned char *dstbuf, size_t dlen )
JMF	12:0071cb144c7a	447	{
JMF	12:0071cb144c7a	448	return( tls_prf_generic( MBEDTLS_MD_SHA384, secret, slen,
JMF	12:0071cb144c7a	449	label, random, rlen, dstbuf, dlen ) );
JMF	12:0071cb144c7a	450	}
JMF	12:0071cb144c7a	451	#endif /* MBEDTLS_SHA512_C */
JMF	12:0071cb144c7a	452	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	453
JMF	12:0071cb144c7a	454	static void ssl_update_checksum_start( mbedtls_ssl_context , const unsigned char , size_t );
JMF	12:0071cb144c7a	455
JMF	12:0071cb144c7a	456	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1) \|\| \
JMF	12:0071cb144c7a	457	defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	458	static void ssl_update_checksum_md5sha1( mbedtls_ssl_context , const unsigned char , size_t );
JMF	12:0071cb144c7a	459	#endif
JMF	12:0071cb144c7a	460
JMF	12:0071cb144c7a	461	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	462	static void ssl_calc_verify_ssl( mbedtls_ssl_context , unsigned char );
JMF	12:0071cb144c7a	463	static void ssl_calc_finished_ssl( mbedtls_ssl_context , unsigned char , int );
JMF	12:0071cb144c7a	464	#endif
JMF	12:0071cb144c7a	465
JMF	12:0071cb144c7a	466	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	467	static void ssl_calc_verify_tls( mbedtls_ssl_context , unsigned char );
JMF	12:0071cb144c7a	468	static void ssl_calc_finished_tls( mbedtls_ssl_context , unsigned char , int );
JMF	12:0071cb144c7a	469	#endif
JMF	12:0071cb144c7a	470
JMF	12:0071cb144c7a	471	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	472	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	473	static void ssl_update_checksum_sha256( mbedtls_ssl_context , const unsigned char , size_t );
JMF	12:0071cb144c7a	474	static void ssl_calc_verify_tls_sha256( mbedtls_ssl_context ,unsigned char );
JMF	12:0071cb144c7a	475	static void ssl_calc_finished_tls_sha256( mbedtls_ssl_context ,unsigned char , int );
JMF	12:0071cb144c7a	476	#endif
JMF	12:0071cb144c7a	477
JMF	12:0071cb144c7a	478	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	479	static void ssl_update_checksum_sha384( mbedtls_ssl_context , const unsigned char , size_t );
JMF	12:0071cb144c7a	480	static void ssl_calc_verify_tls_sha384( mbedtls_ssl_context , unsigned char );
JMF	12:0071cb144c7a	481	static void ssl_calc_finished_tls_sha384( mbedtls_ssl_context , unsigned char , int );
JMF	12:0071cb144c7a	482	#endif
JMF	12:0071cb144c7a	483	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	484
JMF	12:0071cb144c7a	485	int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	486	{
JMF	12:0071cb144c7a	487	int ret = 0;
JMF	12:0071cb144c7a	488	unsigned char tmp[64];
JMF	12:0071cb144c7a	489	unsigned char keyblk[256];
JMF	12:0071cb144c7a	490	unsigned char *key1;
JMF	12:0071cb144c7a	491	unsigned char *key2;
JMF	12:0071cb144c7a	492	unsigned char *mac_enc;
JMF	12:0071cb144c7a	493	unsigned char *mac_dec;
JMF	12:0071cb144c7a	494	size_t iv_copy_len;
JMF	12:0071cb144c7a	495	const mbedtls_cipher_info_t *cipher_info;
JMF	12:0071cb144c7a	496	const mbedtls_md_info_t *md_info;
JMF	12:0071cb144c7a	497
JMF	12:0071cb144c7a	498	mbedtls_ssl_session *session = ssl->session_negotiate;
JMF	12:0071cb144c7a	499	mbedtls_ssl_transform *transform = ssl->transform_negotiate;
JMF	12:0071cb144c7a	500	mbedtls_ssl_handshake_params *handshake = ssl->handshake;
JMF	12:0071cb144c7a	501
JMF	12:0071cb144c7a	502	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> derive keys" ) );
JMF	12:0071cb144c7a	503
JMF	12:0071cb144c7a	504	cipher_info = mbedtls_cipher_info_from_type( transform->ciphersuite_info->cipher );
JMF	12:0071cb144c7a	505	if( cipher_info == NULL )
JMF	12:0071cb144c7a	506	{
JMF	12:0071cb144c7a	507	MBEDTLS_SSL_DEBUG_MSG( 1, ( "cipher info for %d not found",
JMF	12:0071cb144c7a	508	transform->ciphersuite_info->cipher ) );
JMF	12:0071cb144c7a	509	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	510	}
JMF	12:0071cb144c7a	511
JMF	12:0071cb144c7a	512	md_info = mbedtls_md_info_from_type( transform->ciphersuite_info->mac );
JMF	12:0071cb144c7a	513	if( md_info == NULL )
JMF	12:0071cb144c7a	514	{
JMF	12:0071cb144c7a	515	MBEDTLS_SSL_DEBUG_MSG( 1, ( "mbedtls_md info for %d not found",
JMF	12:0071cb144c7a	516	transform->ciphersuite_info->mac ) );
JMF	12:0071cb144c7a	517	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	518	}
JMF	12:0071cb144c7a	519
JMF	12:0071cb144c7a	520	/*
JMF	12:0071cb144c7a	521	* Set appropriate PRF function and other SSL / TLS / TLS1.2 functions
JMF	12:0071cb144c7a	522	*/
JMF	12:0071cb144c7a	523	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	524	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	525	{
JMF	12:0071cb144c7a	526	handshake->tls_prf = ssl3_prf;
JMF	12:0071cb144c7a	527	handshake->calc_verify = ssl_calc_verify_ssl;
JMF	12:0071cb144c7a	528	handshake->calc_finished = ssl_calc_finished_ssl;
JMF	12:0071cb144c7a	529	}
JMF	12:0071cb144c7a	530	else
JMF	12:0071cb144c7a	531	#endif
JMF	12:0071cb144c7a	532	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	533	if( ssl->minor_ver < MBEDTLS_SSL_MINOR_VERSION_3 )
JMF	12:0071cb144c7a	534	{
JMF	12:0071cb144c7a	535	handshake->tls_prf = tls1_prf;
JMF	12:0071cb144c7a	536	handshake->calc_verify = ssl_calc_verify_tls;
JMF	12:0071cb144c7a	537	handshake->calc_finished = ssl_calc_finished_tls;
JMF	12:0071cb144c7a	538	}
JMF	12:0071cb144c7a	539	else
JMF	12:0071cb144c7a	540	#endif
JMF	12:0071cb144c7a	541	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	542	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	543	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 &&
JMF	12:0071cb144c7a	544	transform->ciphersuite_info->mac == MBEDTLS_MD_SHA384 )
JMF	12:0071cb144c7a	545	{
JMF	12:0071cb144c7a	546	handshake->tls_prf = tls_prf_sha384;
JMF	12:0071cb144c7a	547	handshake->calc_verify = ssl_calc_verify_tls_sha384;
JMF	12:0071cb144c7a	548	handshake->calc_finished = ssl_calc_finished_tls_sha384;
JMF	12:0071cb144c7a	549	}
JMF	12:0071cb144c7a	550	else
JMF	12:0071cb144c7a	551	#endif
JMF	12:0071cb144c7a	552	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	553	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
JMF	12:0071cb144c7a	554	{
JMF	12:0071cb144c7a	555	handshake->tls_prf = tls_prf_sha256;
JMF	12:0071cb144c7a	556	handshake->calc_verify = ssl_calc_verify_tls_sha256;
JMF	12:0071cb144c7a	557	handshake->calc_finished = ssl_calc_finished_tls_sha256;
JMF	12:0071cb144c7a	558	}
JMF	12:0071cb144c7a	559	else
JMF	12:0071cb144c7a	560	#endif
JMF	12:0071cb144c7a	561	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	562	{
JMF	12:0071cb144c7a	563	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	564	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	565	}
JMF	12:0071cb144c7a	566
JMF	12:0071cb144c7a	567	/*
JMF	12:0071cb144c7a	568	* SSLv3:
JMF	12:0071cb144c7a	569	* master =
JMF	12:0071cb144c7a	570	* MD5( premaster + SHA1( 'A' + premaster + randbytes ) ) +
JMF	12:0071cb144c7a	571	* MD5( premaster + SHA1( 'BB' + premaster + randbytes ) ) +
JMF	12:0071cb144c7a	572	* MD5( premaster + SHA1( 'CCC' + premaster + randbytes ) )
JMF	12:0071cb144c7a	573	*
JMF	12:0071cb144c7a	574	* TLSv1+:
JMF	12:0071cb144c7a	575	* master = PRF( premaster, "master secret", randbytes )[0..47]
JMF	12:0071cb144c7a	576	*/
JMF	12:0071cb144c7a	577	if( handshake->resume == 0 )
JMF	12:0071cb144c7a	578	{
JMF	12:0071cb144c7a	579	MBEDTLS_SSL_DEBUG_BUF( 3, "premaster secret", handshake->premaster,
JMF	12:0071cb144c7a	580	handshake->pmslen );
JMF	12:0071cb144c7a	581
JMF	12:0071cb144c7a	582	#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
JMF	12:0071cb144c7a	583	if( ssl->handshake->extended_ms == MBEDTLS_SSL_EXTENDED_MS_ENABLED )
JMF	12:0071cb144c7a	584	{
JMF	12:0071cb144c7a	585	unsigned char session_hash[48];
JMF	12:0071cb144c7a	586	size_t hash_len;
JMF	12:0071cb144c7a	587
JMF	12:0071cb144c7a	588	MBEDTLS_SSL_DEBUG_MSG( 3, ( "using extended master secret" ) );
JMF	12:0071cb144c7a	589
JMF	12:0071cb144c7a	590	ssl->handshake->calc_verify( ssl, session_hash );
JMF	12:0071cb144c7a	591
JMF	12:0071cb144c7a	592	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	593	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
JMF	12:0071cb144c7a	594	{
JMF	12:0071cb144c7a	595	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	596	if( ssl->transform_negotiate->ciphersuite_info->mac ==
JMF	12:0071cb144c7a	597	MBEDTLS_MD_SHA384 )
JMF	12:0071cb144c7a	598	{
JMF	12:0071cb144c7a	599	hash_len = 48;
JMF	12:0071cb144c7a	600	}
JMF	12:0071cb144c7a	601	else
JMF	12:0071cb144c7a	602	#endif
JMF	12:0071cb144c7a	603	hash_len = 32;
JMF	12:0071cb144c7a	604	}
JMF	12:0071cb144c7a	605	else
JMF	12:0071cb144c7a	606	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	607	hash_len = 36;
JMF	12:0071cb144c7a	608
JMF	12:0071cb144c7a	609	MBEDTLS_SSL_DEBUG_BUF( 3, "session hash", session_hash, hash_len );
JMF	12:0071cb144c7a	610
JMF	12:0071cb144c7a	611	ret = handshake->tls_prf( handshake->premaster, handshake->pmslen,
JMF	12:0071cb144c7a	612	"extended master secret",
JMF	12:0071cb144c7a	613	session_hash, hash_len,
JMF	12:0071cb144c7a	614	session->master, 48 );
JMF	12:0071cb144c7a	615	if( ret != 0 )
JMF	12:0071cb144c7a	616	{
JMF	12:0071cb144c7a	617	MBEDTLS_SSL_DEBUG_RET( 1, "prf", ret );
JMF	12:0071cb144c7a	618	return( ret );
JMF	12:0071cb144c7a	619	}
JMF	12:0071cb144c7a	620
JMF	12:0071cb144c7a	621	}
JMF	12:0071cb144c7a	622	else
JMF	12:0071cb144c7a	623	#endif
JMF	12:0071cb144c7a	624	ret = handshake->tls_prf( handshake->premaster, handshake->pmslen,
JMF	12:0071cb144c7a	625	"master secret",
JMF	12:0071cb144c7a	626	handshake->randbytes, 64,
JMF	12:0071cb144c7a	627	session->master, 48 );
JMF	12:0071cb144c7a	628	if( ret != 0 )
JMF	12:0071cb144c7a	629	{
JMF	12:0071cb144c7a	630	MBEDTLS_SSL_DEBUG_RET( 1, "prf", ret );
JMF	12:0071cb144c7a	631	return( ret );
JMF	12:0071cb144c7a	632	}
JMF	12:0071cb144c7a	633
JMF	12:0071cb144c7a	634	mbedtls_zeroize( handshake->premaster, sizeof(handshake->premaster) );
JMF	12:0071cb144c7a	635	}
JMF	12:0071cb144c7a	636	else
JMF	12:0071cb144c7a	637	MBEDTLS_SSL_DEBUG_MSG( 3, ( "no premaster (session resumed)" ) );
JMF	12:0071cb144c7a	638
JMF	12:0071cb144c7a	639	/*
JMF	12:0071cb144c7a	640	* Swap the client and server random values.
JMF	12:0071cb144c7a	641	*/
JMF	12:0071cb144c7a	642	memcpy( tmp, handshake->randbytes, 64 );
JMF	12:0071cb144c7a	643	memcpy( handshake->randbytes, tmp + 32, 32 );
JMF	12:0071cb144c7a	644	memcpy( handshake->randbytes + 32, tmp, 32 );
JMF	12:0071cb144c7a	645	mbedtls_zeroize( tmp, sizeof( tmp ) );
JMF	12:0071cb144c7a	646
JMF	12:0071cb144c7a	647	/*
JMF	12:0071cb144c7a	648	* SSLv3:
JMF	12:0071cb144c7a	649	* key block =
JMF	12:0071cb144c7a	650	* MD5( master + SHA1( 'A' + master + randbytes ) ) +
JMF	12:0071cb144c7a	651	* MD5( master + SHA1( 'BB' + master + randbytes ) ) +
JMF	12:0071cb144c7a	652	* MD5( master + SHA1( 'CCC' + master + randbytes ) ) +
JMF	12:0071cb144c7a	653	* MD5( master + SHA1( 'DDDD' + master + randbytes ) ) +
JMF	12:0071cb144c7a	654	* ...
JMF	12:0071cb144c7a	655	*
JMF	12:0071cb144c7a	656	* TLSv1:
JMF	12:0071cb144c7a	657	* key block = PRF( master, "key expansion", randbytes )
JMF	12:0071cb144c7a	658	*/
JMF	12:0071cb144c7a	659	ret = handshake->tls_prf( session->master, 48, "key expansion",
JMF	12:0071cb144c7a	660	handshake->randbytes, 64, keyblk, 256 );
JMF	12:0071cb144c7a	661	if( ret != 0 )
JMF	12:0071cb144c7a	662	{
JMF	12:0071cb144c7a	663	MBEDTLS_SSL_DEBUG_RET( 1, "prf", ret );
JMF	12:0071cb144c7a	664	return( ret );
JMF	12:0071cb144c7a	665	}
JMF	12:0071cb144c7a	666
JMF	12:0071cb144c7a	667	MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite = %s",
JMF	12:0071cb144c7a	668	mbedtls_ssl_get_ciphersuite_name( session->ciphersuite ) ) );
JMF	12:0071cb144c7a	669	MBEDTLS_SSL_DEBUG_BUF( 3, "master secret", session->master, 48 );
JMF	12:0071cb144c7a	670	MBEDTLS_SSL_DEBUG_BUF( 4, "random bytes", handshake->randbytes, 64 );
JMF	12:0071cb144c7a	671	MBEDTLS_SSL_DEBUG_BUF( 4, "key block", keyblk, 256 );
JMF	12:0071cb144c7a	672
JMF	12:0071cb144c7a	673	mbedtls_zeroize( handshake->randbytes, sizeof( handshake->randbytes ) );
JMF	12:0071cb144c7a	674
JMF	12:0071cb144c7a	675	/*
JMF	12:0071cb144c7a	676	* Determine the appropriate key, IV and MAC length.
JMF	12:0071cb144c7a	677	*/
JMF	12:0071cb144c7a	678
JMF	12:0071cb144c7a	679	transform->keylen = cipher_info->key_bitlen / 8;
JMF	12:0071cb144c7a	680
JMF	12:0071cb144c7a	681	if( cipher_info->mode == MBEDTLS_MODE_GCM \|\|
JMF	12:0071cb144c7a	682	cipher_info->mode == MBEDTLS_MODE_CCM )
JMF	12:0071cb144c7a	683	{
JMF	12:0071cb144c7a	684	transform->maclen = 0;
JMF	12:0071cb144c7a	685
JMF	12:0071cb144c7a	686	transform->ivlen = 12;
JMF	12:0071cb144c7a	687	transform->fixed_ivlen = 4;
JMF	12:0071cb144c7a	688
JMF	12:0071cb144c7a	689	/* Minimum length is expicit IV + tag */
JMF	12:0071cb144c7a	690	transform->minlen = transform->ivlen - transform->fixed_ivlen
JMF	12:0071cb144c7a	691	+ ( transform->ciphersuite_info->flags &
JMF	12:0071cb144c7a	692	MBEDTLS_CIPHERSUITE_SHORT_TAG ? 8 : 16 );
JMF	12:0071cb144c7a	693	}
JMF	12:0071cb144c7a	694	else
JMF	12:0071cb144c7a	695	{
JMF	12:0071cb144c7a	696	/* Initialize HMAC contexts */
JMF	12:0071cb144c7a	697	if( ( ret = mbedtls_md_setup( &transform->md_ctx_enc, md_info, 1 ) ) != 0 \|\|
JMF	12:0071cb144c7a	698	( ret = mbedtls_md_setup( &transform->md_ctx_dec, md_info, 1 ) ) != 0 )
JMF	12:0071cb144c7a	699	{
JMF	12:0071cb144c7a	700	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_md_setup", ret );
JMF	12:0071cb144c7a	701	return( ret );
JMF	12:0071cb144c7a	702	}
JMF	12:0071cb144c7a	703
JMF	12:0071cb144c7a	704	/* Get MAC length */
JMF	12:0071cb144c7a	705	transform->maclen = mbedtls_md_get_size( md_info );
JMF	12:0071cb144c7a	706
JMF	12:0071cb144c7a	707	#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
JMF	12:0071cb144c7a	708	/*
JMF	12:0071cb144c7a	709	* If HMAC is to be truncated, we shall keep the leftmost bytes,
JMF	12:0071cb144c7a	710	* (rfc 6066 page 13 or rfc 2104 section 4),
JMF	12:0071cb144c7a	711	* so we only need to adjust the length here.
JMF	12:0071cb144c7a	712	*/
JMF	12:0071cb144c7a	713	if( session->trunc_hmac == MBEDTLS_SSL_TRUNC_HMAC_ENABLED )
JMF	12:0071cb144c7a	714	transform->maclen = MBEDTLS_SSL_TRUNCATED_HMAC_LEN;
JMF	12:0071cb144c7a	715	#endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
JMF	12:0071cb144c7a	716
JMF	12:0071cb144c7a	717	/* IV length */
JMF	12:0071cb144c7a	718	transform->ivlen = cipher_info->iv_size;
JMF	12:0071cb144c7a	719
JMF	12:0071cb144c7a	720	/* Minimum length */
JMF	12:0071cb144c7a	721	if( cipher_info->mode == MBEDTLS_MODE_STREAM )
JMF	12:0071cb144c7a	722	transform->minlen = transform->maclen;
JMF	12:0071cb144c7a	723	else
JMF	12:0071cb144c7a	724	{
JMF	12:0071cb144c7a	725	/*
JMF	12:0071cb144c7a	726	* GenericBlockCipher:
JMF	12:0071cb144c7a	727	* 1. if EtM is in use: one block plus MAC
JMF	12:0071cb144c7a	728	* otherwise: * first multiple of blocklen greater than maclen
JMF	12:0071cb144c7a	729	* 2. IV except for SSL3 and TLS 1.0
JMF	12:0071cb144c7a	730	*/
JMF	12:0071cb144c7a	731	#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
JMF	12:0071cb144c7a	732	if( session->encrypt_then_mac == MBEDTLS_SSL_ETM_ENABLED )
JMF	12:0071cb144c7a	733	{
JMF	12:0071cb144c7a	734	transform->minlen = transform->maclen
JMF	12:0071cb144c7a	735	+ cipher_info->block_size;
JMF	12:0071cb144c7a	736	}
JMF	12:0071cb144c7a	737	else
JMF	12:0071cb144c7a	738	#endif
JMF	12:0071cb144c7a	739	{
JMF	12:0071cb144c7a	740	transform->minlen = transform->maclen
JMF	12:0071cb144c7a	741	+ cipher_info->block_size
JMF	12:0071cb144c7a	742	- transform->maclen % cipher_info->block_size;
JMF	12:0071cb144c7a	743	}
JMF	12:0071cb144c7a	744
JMF	12:0071cb144c7a	745	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1)
JMF	12:0071cb144c7a	746	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 \|\|
JMF	12:0071cb144c7a	747	ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_1 )
JMF	12:0071cb144c7a	748	; /* No need to adjust minlen */
JMF	12:0071cb144c7a	749	else
JMF	12:0071cb144c7a	750	#endif
JMF	12:0071cb144c7a	751	#if defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	752	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_2 \|\|
JMF	12:0071cb144c7a	753	ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
JMF	12:0071cb144c7a	754	{
JMF	12:0071cb144c7a	755	transform->minlen += transform->ivlen;
JMF	12:0071cb144c7a	756	}
JMF	12:0071cb144c7a	757	else
JMF	12:0071cb144c7a	758	#endif
JMF	12:0071cb144c7a	759	{
JMF	12:0071cb144c7a	760	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	761	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	762	}
JMF	12:0071cb144c7a	763	}
JMF	12:0071cb144c7a	764	}
JMF	12:0071cb144c7a	765
JMF	12:0071cb144c7a	766	MBEDTLS_SSL_DEBUG_MSG( 3, ( "keylen: %d, minlen: %d, ivlen: %d, maclen: %d",
JMF	12:0071cb144c7a	767	transform->keylen, transform->minlen, transform->ivlen,
JMF	12:0071cb144c7a	768	transform->maclen ) );
JMF	12:0071cb144c7a	769
JMF	12:0071cb144c7a	770	/*
JMF	12:0071cb144c7a	771	* Finally setup the cipher contexts, IVs and MAC secrets.
JMF	12:0071cb144c7a	772	*/
JMF	12:0071cb144c7a	773	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	774	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	775	{
JMF	12:0071cb144c7a	776	key1 = keyblk + transform->maclen * 2;
JMF	12:0071cb144c7a	777	key2 = keyblk + transform->maclen * 2 + transform->keylen;
JMF	12:0071cb144c7a	778
JMF	12:0071cb144c7a	779	mac_enc = keyblk;
JMF	12:0071cb144c7a	780	mac_dec = keyblk + transform->maclen;
JMF	12:0071cb144c7a	781
JMF	12:0071cb144c7a	782	/*
JMF	12:0071cb144c7a	783	* This is not used in TLS v1.1.
JMF	12:0071cb144c7a	784	*/
JMF	12:0071cb144c7a	785	iv_copy_len = ( transform->fixed_ivlen ) ?
JMF	12:0071cb144c7a	786	transform->fixed_ivlen : transform->ivlen;
JMF	12:0071cb144c7a	787	memcpy( transform->iv_enc, key2 + transform->keylen, iv_copy_len );
JMF	12:0071cb144c7a	788	memcpy( transform->iv_dec, key2 + transform->keylen + iv_copy_len,
JMF	12:0071cb144c7a	789	iv_copy_len );
JMF	12:0071cb144c7a	790	}
JMF	12:0071cb144c7a	791	else
JMF	12:0071cb144c7a	792	#endif /* MBEDTLS_SSL_CLI_C */
JMF	12:0071cb144c7a	793	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	794	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	795	{
JMF	12:0071cb144c7a	796	key1 = keyblk + transform->maclen * 2 + transform->keylen;
JMF	12:0071cb144c7a	797	key2 = keyblk + transform->maclen * 2;
JMF	12:0071cb144c7a	798
JMF	12:0071cb144c7a	799	mac_enc = keyblk + transform->maclen;
JMF	12:0071cb144c7a	800	mac_dec = keyblk;
JMF	12:0071cb144c7a	801
JMF	12:0071cb144c7a	802	/*
JMF	12:0071cb144c7a	803	* This is not used in TLS v1.1.
JMF	12:0071cb144c7a	804	*/
JMF	12:0071cb144c7a	805	iv_copy_len = ( transform->fixed_ivlen ) ?
JMF	12:0071cb144c7a	806	transform->fixed_ivlen : transform->ivlen;
JMF	12:0071cb144c7a	807	memcpy( transform->iv_dec, key1 + transform->keylen, iv_copy_len );
JMF	12:0071cb144c7a	808	memcpy( transform->iv_enc, key1 + transform->keylen + iv_copy_len,
JMF	12:0071cb144c7a	809	iv_copy_len );
JMF	12:0071cb144c7a	810	}
JMF	12:0071cb144c7a	811	else
JMF	12:0071cb144c7a	812	#endif /* MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	813	{
JMF	12:0071cb144c7a	814	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	815	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	816	}
JMF	12:0071cb144c7a	817
JMF	12:0071cb144c7a	818	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	819	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	820	{
JMF	12:0071cb144c7a	821	if( transform->maclen > sizeof transform->mac_enc )
JMF	12:0071cb144c7a	822	{
JMF	12:0071cb144c7a	823	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	824	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	825	}
JMF	12:0071cb144c7a	826
JMF	12:0071cb144c7a	827	memcpy( transform->mac_enc, mac_enc, transform->maclen );
JMF	12:0071cb144c7a	828	memcpy( transform->mac_dec, mac_dec, transform->maclen );
JMF	12:0071cb144c7a	829	}
JMF	12:0071cb144c7a	830	else
JMF	12:0071cb144c7a	831	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	832	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| \
JMF	12:0071cb144c7a	833	defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	834	if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_1 )
JMF	12:0071cb144c7a	835	{
JMF	12:0071cb144c7a	836	mbedtls_md_hmac_starts( &transform->md_ctx_enc, mac_enc, transform->maclen );
JMF	12:0071cb144c7a	837	mbedtls_md_hmac_starts( &transform->md_ctx_dec, mac_dec, transform->maclen );
JMF	12:0071cb144c7a	838	}
JMF	12:0071cb144c7a	839	else
JMF	12:0071cb144c7a	840	#endif
JMF	12:0071cb144c7a	841	{
JMF	12:0071cb144c7a	842	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	843	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	844	}
JMF	12:0071cb144c7a	845
JMF	12:0071cb144c7a	846	#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
JMF	12:0071cb144c7a	847	if( mbedtls_ssl_hw_record_init != NULL )
JMF	12:0071cb144c7a	848	{
JMF	12:0071cb144c7a	849	int ret = 0;
JMF	12:0071cb144c7a	850
JMF	12:0071cb144c7a	851	MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_init()" ) );
JMF	12:0071cb144c7a	852
JMF	12:0071cb144c7a	853	if( ( ret = mbedtls_ssl_hw_record_init( ssl, key1, key2, transform->keylen,
JMF	12:0071cb144c7a	854	transform->iv_enc, transform->iv_dec,
JMF	12:0071cb144c7a	855	iv_copy_len,
JMF	12:0071cb144c7a	856	mac_enc, mac_dec,
JMF	12:0071cb144c7a	857	transform->maclen ) ) != 0 )
JMF	12:0071cb144c7a	858	{
JMF	12:0071cb144c7a	859	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_init", ret );
JMF	12:0071cb144c7a	860	return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED );
JMF	12:0071cb144c7a	861	}
JMF	12:0071cb144c7a	862	}
JMF	12:0071cb144c7a	863	#endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */
JMF	12:0071cb144c7a	864
JMF	12:0071cb144c7a	865	#if defined(MBEDTLS_SSL_EXPORT_KEYS)
JMF	12:0071cb144c7a	866	if( ssl->conf->f_export_keys != NULL )
JMF	12:0071cb144c7a	867	{
JMF	12:0071cb144c7a	868	ssl->conf->f_export_keys( ssl->conf->p_export_keys,
JMF	12:0071cb144c7a	869	session->master, keyblk,
JMF	12:0071cb144c7a	870	transform->maclen, transform->keylen,
JMF	12:0071cb144c7a	871	iv_copy_len );
JMF	12:0071cb144c7a	872	}
JMF	12:0071cb144c7a	873	#endif
JMF	12:0071cb144c7a	874
JMF	12:0071cb144c7a	875	if( ( ret = mbedtls_cipher_setup( &transform->cipher_ctx_enc,
JMF	12:0071cb144c7a	876	cipher_info ) ) != 0 )
JMF	12:0071cb144c7a	877	{
JMF	12:0071cb144c7a	878	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setup", ret );
JMF	12:0071cb144c7a	879	return( ret );
JMF	12:0071cb144c7a	880	}
JMF	12:0071cb144c7a	881
JMF	12:0071cb144c7a	882	if( ( ret = mbedtls_cipher_setup( &transform->cipher_ctx_dec,
JMF	12:0071cb144c7a	883	cipher_info ) ) != 0 )
JMF	12:0071cb144c7a	884	{
JMF	12:0071cb144c7a	885	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setup", ret );
JMF	12:0071cb144c7a	886	return( ret );
JMF	12:0071cb144c7a	887	}
JMF	12:0071cb144c7a	888
JMF	12:0071cb144c7a	889	if( ( ret = mbedtls_cipher_setkey( &transform->cipher_ctx_enc, key1,
JMF	12:0071cb144c7a	890	cipher_info->key_bitlen,
JMF	12:0071cb144c7a	891	MBEDTLS_ENCRYPT ) ) != 0 )
JMF	12:0071cb144c7a	892	{
JMF	12:0071cb144c7a	893	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setkey", ret );
JMF	12:0071cb144c7a	894	return( ret );
JMF	12:0071cb144c7a	895	}
JMF	12:0071cb144c7a	896
JMF	12:0071cb144c7a	897	if( ( ret = mbedtls_cipher_setkey( &transform->cipher_ctx_dec, key2,
JMF	12:0071cb144c7a	898	cipher_info->key_bitlen,
JMF	12:0071cb144c7a	899	MBEDTLS_DECRYPT ) ) != 0 )
JMF	12:0071cb144c7a	900	{
JMF	12:0071cb144c7a	901	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setkey", ret );
JMF	12:0071cb144c7a	902	return( ret );
JMF	12:0071cb144c7a	903	}
JMF	12:0071cb144c7a	904
JMF	12:0071cb144c7a	905	#if defined(MBEDTLS_CIPHER_MODE_CBC)
JMF	12:0071cb144c7a	906	if( cipher_info->mode == MBEDTLS_MODE_CBC )
JMF	12:0071cb144c7a	907	{
JMF	12:0071cb144c7a	908	if( ( ret = mbedtls_cipher_set_padding_mode( &transform->cipher_ctx_enc,
JMF	12:0071cb144c7a	909	MBEDTLS_PADDING_NONE ) ) != 0 )
JMF	12:0071cb144c7a	910	{
JMF	12:0071cb144c7a	911	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_set_padding_mode", ret );
JMF	12:0071cb144c7a	912	return( ret );
JMF	12:0071cb144c7a	913	}
JMF	12:0071cb144c7a	914
JMF	12:0071cb144c7a	915	if( ( ret = mbedtls_cipher_set_padding_mode( &transform->cipher_ctx_dec,
JMF	12:0071cb144c7a	916	MBEDTLS_PADDING_NONE ) ) != 0 )
JMF	12:0071cb144c7a	917	{
JMF	12:0071cb144c7a	918	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_set_padding_mode", ret );
JMF	12:0071cb144c7a	919	return( ret );
JMF	12:0071cb144c7a	920	}
JMF	12:0071cb144c7a	921	}
JMF	12:0071cb144c7a	922	#endif /* MBEDTLS_CIPHER_MODE_CBC */
JMF	12:0071cb144c7a	923
JMF	12:0071cb144c7a	924	mbedtls_zeroize( keyblk, sizeof( keyblk ) );
JMF	12:0071cb144c7a	925
JMF	12:0071cb144c7a	926	#if defined(MBEDTLS_ZLIB_SUPPORT)
JMF	12:0071cb144c7a	927	// Initialize compression
JMF	12:0071cb144c7a	928	//
JMF	12:0071cb144c7a	929	if( session->compression == MBEDTLS_SSL_COMPRESS_DEFLATE )
JMF	12:0071cb144c7a	930	{
JMF	12:0071cb144c7a	931	if( ssl->compress_buf == NULL )
JMF	12:0071cb144c7a	932	{
JMF	12:0071cb144c7a	933	MBEDTLS_SSL_DEBUG_MSG( 3, ( "Allocating compression buffer" ) );
JMF	12:0071cb144c7a	934	ssl->compress_buf = mbedtls_calloc( 1, MBEDTLS_SSL_BUFFER_LEN );
JMF	12:0071cb144c7a	935	if( ssl->compress_buf == NULL )
JMF	12:0071cb144c7a	936	{
JMF	12:0071cb144c7a	937	MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed",
JMF	12:0071cb144c7a	938	MBEDTLS_SSL_BUFFER_LEN ) );
JMF	12:0071cb144c7a	939	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	940	}
JMF	12:0071cb144c7a	941	}
JMF	12:0071cb144c7a	942
JMF	12:0071cb144c7a	943	MBEDTLS_SSL_DEBUG_MSG( 3, ( "Initializing zlib states" ) );
JMF	12:0071cb144c7a	944
JMF	12:0071cb144c7a	945	memset( &transform->ctx_deflate, 0, sizeof( transform->ctx_deflate ) );
JMF	12:0071cb144c7a	946	memset( &transform->ctx_inflate, 0, sizeof( transform->ctx_inflate ) );
JMF	12:0071cb144c7a	947
JMF	12:0071cb144c7a	948	if( deflateInit( &transform->ctx_deflate,
JMF	12:0071cb144c7a	949	Z_DEFAULT_COMPRESSION ) != Z_OK \|\|
JMF	12:0071cb144c7a	950	inflateInit( &transform->ctx_inflate ) != Z_OK )
JMF	12:0071cb144c7a	951	{
JMF	12:0071cb144c7a	952	MBEDTLS_SSL_DEBUG_MSG( 1, ( "Failed to initialize compression" ) );
JMF	12:0071cb144c7a	953	return( MBEDTLS_ERR_SSL_COMPRESSION_FAILED );
JMF	12:0071cb144c7a	954	}
JMF	12:0071cb144c7a	955	}
JMF	12:0071cb144c7a	956	#endif /* MBEDTLS_ZLIB_SUPPORT */
JMF	12:0071cb144c7a	957
JMF	12:0071cb144c7a	958	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= derive keys" ) );
JMF	12:0071cb144c7a	959
JMF	12:0071cb144c7a	960	return( 0 );
JMF	12:0071cb144c7a	961	}
JMF	12:0071cb144c7a	962
JMF	12:0071cb144c7a	963	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	964	void ssl_calc_verify_ssl( mbedtls_ssl_context *ssl, unsigned char hash[36] )
JMF	12:0071cb144c7a	965	{
JMF	12:0071cb144c7a	966	mbedtls_md5_context md5;
JMF	12:0071cb144c7a	967	mbedtls_sha1_context sha1;
JMF	12:0071cb144c7a	968	unsigned char pad_1[48];
JMF	12:0071cb144c7a	969	unsigned char pad_2[48];
JMF	12:0071cb144c7a	970
JMF	12:0071cb144c7a	971	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc verify ssl" ) );
JMF	12:0071cb144c7a	972
JMF	12:0071cb144c7a	973	mbedtls_md5_init( &md5 );
JMF	12:0071cb144c7a	974	mbedtls_sha1_init( &sha1 );
JMF	12:0071cb144c7a	975
JMF	12:0071cb144c7a	976	mbedtls_md5_clone( &md5, &ssl->handshake->fin_md5 );
JMF	12:0071cb144c7a	977	mbedtls_sha1_clone( &sha1, &ssl->handshake->fin_sha1 );
JMF	12:0071cb144c7a	978
JMF	12:0071cb144c7a	979	memset( pad_1, 0x36, 48 );
JMF	12:0071cb144c7a	980	memset( pad_2, 0x5C, 48 );
JMF	12:0071cb144c7a	981
JMF	12:0071cb144c7a	982	mbedtls_md5_update( &md5, ssl->session_negotiate->master, 48 );
JMF	12:0071cb144c7a	983	mbedtls_md5_update( &md5, pad_1, 48 );
JMF	12:0071cb144c7a	984	mbedtls_md5_finish( &md5, hash );
JMF	12:0071cb144c7a	985
JMF	12:0071cb144c7a	986	mbedtls_md5_starts( &md5 );
JMF	12:0071cb144c7a	987	mbedtls_md5_update( &md5, ssl->session_negotiate->master, 48 );
JMF	12:0071cb144c7a	988	mbedtls_md5_update( &md5, pad_2, 48 );
JMF	12:0071cb144c7a	989	mbedtls_md5_update( &md5, hash, 16 );
JMF	12:0071cb144c7a	990	mbedtls_md5_finish( &md5, hash );
JMF	12:0071cb144c7a	991
JMF	12:0071cb144c7a	992	mbedtls_sha1_update( &sha1, ssl->session_negotiate->master, 48 );
JMF	12:0071cb144c7a	993	mbedtls_sha1_update( &sha1, pad_1, 40 );
JMF	12:0071cb144c7a	994	mbedtls_sha1_finish( &sha1, hash + 16 );
JMF	12:0071cb144c7a	995
JMF	12:0071cb144c7a	996	mbedtls_sha1_starts( &sha1 );
JMF	12:0071cb144c7a	997	mbedtls_sha1_update( &sha1, ssl->session_negotiate->master, 48 );
JMF	12:0071cb144c7a	998	mbedtls_sha1_update( &sha1, pad_2, 40 );
JMF	12:0071cb144c7a	999	mbedtls_sha1_update( &sha1, hash + 16, 20 );
JMF	12:0071cb144c7a	1000	mbedtls_sha1_finish( &sha1, hash + 16 );
JMF	12:0071cb144c7a	1001
JMF	12:0071cb144c7a	1002	MBEDTLS_SSL_DEBUG_BUF( 3, "calculated verify result", hash, 36 );
JMF	12:0071cb144c7a	1003	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc verify" ) );
JMF	12:0071cb144c7a	1004
JMF	12:0071cb144c7a	1005	mbedtls_md5_free( &md5 );
JMF	12:0071cb144c7a	1006	mbedtls_sha1_free( &sha1 );
JMF	12:0071cb144c7a	1007
JMF	12:0071cb144c7a	1008	return;
JMF	12:0071cb144c7a	1009	}
JMF	12:0071cb144c7a	1010	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	1011
JMF	12:0071cb144c7a	1012	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	1013	void ssl_calc_verify_tls( mbedtls_ssl_context *ssl, unsigned char hash[36] )
JMF	12:0071cb144c7a	1014	{
JMF	12:0071cb144c7a	1015	mbedtls_md5_context md5;
JMF	12:0071cb144c7a	1016	mbedtls_sha1_context sha1;
JMF	12:0071cb144c7a	1017
JMF	12:0071cb144c7a	1018	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc verify tls" ) );
JMF	12:0071cb144c7a	1019
JMF	12:0071cb144c7a	1020	mbedtls_md5_init( &md5 );
JMF	12:0071cb144c7a	1021	mbedtls_sha1_init( &sha1 );
JMF	12:0071cb144c7a	1022
JMF	12:0071cb144c7a	1023	mbedtls_md5_clone( &md5, &ssl->handshake->fin_md5 );
JMF	12:0071cb144c7a	1024	mbedtls_sha1_clone( &sha1, &ssl->handshake->fin_sha1 );
JMF	12:0071cb144c7a	1025
JMF	12:0071cb144c7a	1026	mbedtls_md5_finish( &md5, hash );
JMF	12:0071cb144c7a	1027	mbedtls_sha1_finish( &sha1, hash + 16 );
JMF	12:0071cb144c7a	1028
JMF	12:0071cb144c7a	1029	MBEDTLS_SSL_DEBUG_BUF( 3, "calculated verify result", hash, 36 );
JMF	12:0071cb144c7a	1030	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc verify" ) );
JMF	12:0071cb144c7a	1031
JMF	12:0071cb144c7a	1032	mbedtls_md5_free( &md5 );
JMF	12:0071cb144c7a	1033	mbedtls_sha1_free( &sha1 );
JMF	12:0071cb144c7a	1034
JMF	12:0071cb144c7a	1035	return;
JMF	12:0071cb144c7a	1036	}
JMF	12:0071cb144c7a	1037	#endif /* MBEDTLS_SSL_PROTO_TLS1 \|\| MBEDTLS_SSL_PROTO_TLS1_1 */
JMF	12:0071cb144c7a	1038
JMF	12:0071cb144c7a	1039	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	1040	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	1041	void ssl_calc_verify_tls_sha256( mbedtls_ssl_context *ssl, unsigned char hash[32] )
JMF	12:0071cb144c7a	1042	{
JMF	12:0071cb144c7a	1043	mbedtls_sha256_context sha256;
JMF	12:0071cb144c7a	1044
JMF	12:0071cb144c7a	1045	mbedtls_sha256_init( &sha256 );
JMF	12:0071cb144c7a	1046
JMF	12:0071cb144c7a	1047	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc verify sha256" ) );
JMF	12:0071cb144c7a	1048
JMF	12:0071cb144c7a	1049	mbedtls_sha256_clone( &sha256, &ssl->handshake->fin_sha256 );
JMF	12:0071cb144c7a	1050	mbedtls_sha256_finish( &sha256, hash );
JMF	12:0071cb144c7a	1051
JMF	12:0071cb144c7a	1052	MBEDTLS_SSL_DEBUG_BUF( 3, "calculated verify result", hash, 32 );
JMF	12:0071cb144c7a	1053	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc verify" ) );
JMF	12:0071cb144c7a	1054
JMF	12:0071cb144c7a	1055	mbedtls_sha256_free( &sha256 );
JMF	12:0071cb144c7a	1056
JMF	12:0071cb144c7a	1057	return;
JMF	12:0071cb144c7a	1058	}
JMF	12:0071cb144c7a	1059	#endif /* MBEDTLS_SHA256_C */
JMF	12:0071cb144c7a	1060
JMF	12:0071cb144c7a	1061	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	1062	void ssl_calc_verify_tls_sha384( mbedtls_ssl_context *ssl, unsigned char hash[48] )
JMF	12:0071cb144c7a	1063	{
JMF	12:0071cb144c7a	1064	mbedtls_sha512_context sha512;
JMF	12:0071cb144c7a	1065
JMF	12:0071cb144c7a	1066	mbedtls_sha512_init( &sha512 );
JMF	12:0071cb144c7a	1067
JMF	12:0071cb144c7a	1068	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc verify sha384" ) );
JMF	12:0071cb144c7a	1069
JMF	12:0071cb144c7a	1070	mbedtls_sha512_clone( &sha512, &ssl->handshake->fin_sha512 );
JMF	12:0071cb144c7a	1071	mbedtls_sha512_finish( &sha512, hash );
JMF	12:0071cb144c7a	1072
JMF	12:0071cb144c7a	1073	MBEDTLS_SSL_DEBUG_BUF( 3, "calculated verify result", hash, 48 );
JMF	12:0071cb144c7a	1074	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc verify" ) );
JMF	12:0071cb144c7a	1075
JMF	12:0071cb144c7a	1076	mbedtls_sha512_free( &sha512 );
JMF	12:0071cb144c7a	1077
JMF	12:0071cb144c7a	1078	return;
JMF	12:0071cb144c7a	1079	}
JMF	12:0071cb144c7a	1080	#endif /* MBEDTLS_SHA512_C */
JMF	12:0071cb144c7a	1081	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	1082
JMF	12:0071cb144c7a	1083	#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
JMF	12:0071cb144c7a	1084	int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl, mbedtls_key_exchange_type_t key_ex )
JMF	12:0071cb144c7a	1085	{
JMF	12:0071cb144c7a	1086	unsigned char *p = ssl->handshake->premaster;
JMF	12:0071cb144c7a	1087	unsigned char *end = p + sizeof( ssl->handshake->premaster );
JMF	12:0071cb144c7a	1088	const unsigned char *psk = ssl->conf->psk;
JMF	12:0071cb144c7a	1089	size_t psk_len = ssl->conf->psk_len;
JMF	12:0071cb144c7a	1090
JMF	12:0071cb144c7a	1091	/* If the psk callback was called, use its result */
JMF	12:0071cb144c7a	1092	if( ssl->handshake->psk != NULL )
JMF	12:0071cb144c7a	1093	{
JMF	12:0071cb144c7a	1094	psk = ssl->handshake->psk;
JMF	12:0071cb144c7a	1095	psk_len = ssl->handshake->psk_len;
JMF	12:0071cb144c7a	1096	}
JMF	12:0071cb144c7a	1097
JMF	12:0071cb144c7a	1098	/*
JMF	12:0071cb144c7a	1099	* PMS = struct {
JMF	12:0071cb144c7a	1100	* opaque other_secret<0..2^16-1>;
JMF	12:0071cb144c7a	1101	* opaque psk<0..2^16-1>;
JMF	12:0071cb144c7a	1102	* };
JMF	12:0071cb144c7a	1103	* with "other_secret" depending on the particular key exchange
JMF	12:0071cb144c7a	1104	*/
JMF	12:0071cb144c7a	1105	#if defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED)
JMF	12:0071cb144c7a	1106	if( key_ex == MBEDTLS_KEY_EXCHANGE_PSK )
JMF	12:0071cb144c7a	1107	{
JMF	12:0071cb144c7a	1108	if( end - p < 2 )
JMF	12:0071cb144c7a	1109	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	1110
JMF	12:0071cb144c7a	1111	*(p++) = (unsigned char)( psk_len >> 8 );
JMF	12:0071cb144c7a	1112	*(p++) = (unsigned char)( psk_len );
JMF	12:0071cb144c7a	1113
JMF	12:0071cb144c7a	1114	if( end < p \|\| (size_t)( end - p ) < psk_len )
JMF	12:0071cb144c7a	1115	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	1116
JMF	12:0071cb144c7a	1117	memset( p, 0, psk_len );
JMF	12:0071cb144c7a	1118	p += psk_len;
JMF	12:0071cb144c7a	1119	}
JMF	12:0071cb144c7a	1120	else
JMF	12:0071cb144c7a	1121	#endif /* MBEDTLS_KEY_EXCHANGE_PSK_ENABLED */
JMF	12:0071cb144c7a	1122	#if defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED)
JMF	12:0071cb144c7a	1123	if( key_ex == MBEDTLS_KEY_EXCHANGE_RSA_PSK )
JMF	12:0071cb144c7a	1124	{
JMF	12:0071cb144c7a	1125	/*
JMF	12:0071cb144c7a	1126	* other_secret already set by the ClientKeyExchange message,
JMF	12:0071cb144c7a	1127	* and is 48 bytes long
JMF	12:0071cb144c7a	1128	*/
JMF	12:0071cb144c7a	1129	*p++ = 0;
JMF	12:0071cb144c7a	1130	*p++ = 48;
JMF	12:0071cb144c7a	1131	p += 48;
JMF	12:0071cb144c7a	1132	}
JMF	12:0071cb144c7a	1133	else
JMF	12:0071cb144c7a	1134	#endif /* MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED */
JMF	12:0071cb144c7a	1135	#if defined(MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED)
JMF	12:0071cb144c7a	1136	if( key_ex == MBEDTLS_KEY_EXCHANGE_DHE_PSK )
JMF	12:0071cb144c7a	1137	{
JMF	12:0071cb144c7a	1138	int ret;
JMF	12:0071cb144c7a	1139	size_t len;
JMF	12:0071cb144c7a	1140
JMF	12:0071cb144c7a	1141	/* Write length only when we know the actual value */
JMF	12:0071cb144c7a	1142	if( ( ret = mbedtls_dhm_calc_secret( &ssl->handshake->dhm_ctx,
JMF	12:0071cb144c7a	1143	p + 2, end - ( p + 2 ), &len,
JMF	12:0071cb144c7a	1144	ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
JMF	12:0071cb144c7a	1145	{
JMF	12:0071cb144c7a	1146	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", ret );
JMF	12:0071cb144c7a	1147	return( ret );
JMF	12:0071cb144c7a	1148	}
JMF	12:0071cb144c7a	1149	*(p++) = (unsigned char)( len >> 8 );
JMF	12:0071cb144c7a	1150	*(p++) = (unsigned char)( len );
JMF	12:0071cb144c7a	1151	p += len;
JMF	12:0071cb144c7a	1152
JMF	12:0071cb144c7a	1153	MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: K ", &ssl->handshake->dhm_ctx.K );
JMF	12:0071cb144c7a	1154	}
JMF	12:0071cb144c7a	1155	else
JMF	12:0071cb144c7a	1156	#endif /* MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED */
JMF	12:0071cb144c7a	1157	#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
JMF	12:0071cb144c7a	1158	if( key_ex == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK )
JMF	12:0071cb144c7a	1159	{
JMF	12:0071cb144c7a	1160	int ret;
JMF	12:0071cb144c7a	1161	size_t zlen;
JMF	12:0071cb144c7a	1162
JMF	12:0071cb144c7a	1163	if( ( ret = mbedtls_ecdh_calc_secret( &ssl->handshake->ecdh_ctx, &zlen,
JMF	12:0071cb144c7a	1164	p + 2, end - ( p + 2 ),
JMF	12:0071cb144c7a	1165	ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
JMF	12:0071cb144c7a	1166	{
JMF	12:0071cb144c7a	1167	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret );
JMF	12:0071cb144c7a	1168	return( ret );
JMF	12:0071cb144c7a	1169	}
JMF	12:0071cb144c7a	1170
JMF	12:0071cb144c7a	1171	*(p++) = (unsigned char)( zlen >> 8 );
JMF	12:0071cb144c7a	1172	*(p++) = (unsigned char)( zlen );
JMF	12:0071cb144c7a	1173	p += zlen;
JMF	12:0071cb144c7a	1174
JMF	12:0071cb144c7a	1175	MBEDTLS_SSL_DEBUG_MPI( 3, "ECDH: z", &ssl->handshake->ecdh_ctx.z );
JMF	12:0071cb144c7a	1176	}
JMF	12:0071cb144c7a	1177	else
JMF	12:0071cb144c7a	1178	#endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */
JMF	12:0071cb144c7a	1179	{
JMF	12:0071cb144c7a	1180	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1181	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1182	}
JMF	12:0071cb144c7a	1183
JMF	12:0071cb144c7a	1184	/* opaque psk<0..2^16-1>; */
JMF	12:0071cb144c7a	1185	if( end - p < 2 )
JMF	12:0071cb144c7a	1186	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	1187
JMF	12:0071cb144c7a	1188	*(p++) = (unsigned char)( psk_len >> 8 );
JMF	12:0071cb144c7a	1189	*(p++) = (unsigned char)( psk_len );
JMF	12:0071cb144c7a	1190
JMF	12:0071cb144c7a	1191	if( end < p \|\| (size_t)( end - p ) < psk_len )
JMF	12:0071cb144c7a	1192	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	1193
JMF	12:0071cb144c7a	1194	memcpy( p, psk, psk_len );
JMF	12:0071cb144c7a	1195	p += psk_len;
JMF	12:0071cb144c7a	1196
JMF	12:0071cb144c7a	1197	ssl->handshake->pmslen = p - ssl->handshake->premaster;
JMF	12:0071cb144c7a	1198
JMF	12:0071cb144c7a	1199	return( 0 );
JMF	12:0071cb144c7a	1200	}
JMF	12:0071cb144c7a	1201	#endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */
JMF	12:0071cb144c7a	1202
JMF	12:0071cb144c7a	1203	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	1204	/*
JMF	12:0071cb144c7a	1205	* SSLv3.0 MAC functions
JMF	12:0071cb144c7a	1206	*/
JMF	12:0071cb144c7a	1207	static void ssl_mac( mbedtls_md_context_t md_ctx, unsigned char secret,
JMF	12:0071cb144c7a	1208	unsigned char *buf, size_t len,
JMF	12:0071cb144c7a	1209	unsigned char *ctr, int type )
JMF	12:0071cb144c7a	1210	{
JMF	12:0071cb144c7a	1211	unsigned char header[11];
JMF	12:0071cb144c7a	1212	unsigned char padding[48];
JMF	12:0071cb144c7a	1213	int padlen;
JMF	12:0071cb144c7a	1214	int md_size = mbedtls_md_get_size( md_ctx->md_info );
JMF	12:0071cb144c7a	1215	int md_type = mbedtls_md_get_type( md_ctx->md_info );
JMF	12:0071cb144c7a	1216
JMF	12:0071cb144c7a	1217	/* Only MD5 and SHA-1 supported */
JMF	12:0071cb144c7a	1218	if( md_type == MBEDTLS_MD_MD5 )
JMF	12:0071cb144c7a	1219	padlen = 48;
JMF	12:0071cb144c7a	1220	else
JMF	12:0071cb144c7a	1221	padlen = 40;
JMF	12:0071cb144c7a	1222
JMF	12:0071cb144c7a	1223	memcpy( header, ctr, 8 );
JMF	12:0071cb144c7a	1224	header[ 8] = (unsigned char) type;
JMF	12:0071cb144c7a	1225	header[ 9] = (unsigned char)( len >> 8 );
JMF	12:0071cb144c7a	1226	header[10] = (unsigned char)( len );
JMF	12:0071cb144c7a	1227
JMF	12:0071cb144c7a	1228	memset( padding, 0x36, padlen );
JMF	12:0071cb144c7a	1229	mbedtls_md_starts( md_ctx );
JMF	12:0071cb144c7a	1230	mbedtls_md_update( md_ctx, secret, md_size );
JMF	12:0071cb144c7a	1231	mbedtls_md_update( md_ctx, padding, padlen );
JMF	12:0071cb144c7a	1232	mbedtls_md_update( md_ctx, header, 11 );
JMF	12:0071cb144c7a	1233	mbedtls_md_update( md_ctx, buf, len );
JMF	12:0071cb144c7a	1234	mbedtls_md_finish( md_ctx, buf + len );
JMF	12:0071cb144c7a	1235
JMF	12:0071cb144c7a	1236	memset( padding, 0x5C, padlen );
JMF	12:0071cb144c7a	1237	mbedtls_md_starts( md_ctx );
JMF	12:0071cb144c7a	1238	mbedtls_md_update( md_ctx, secret, md_size );
JMF	12:0071cb144c7a	1239	mbedtls_md_update( md_ctx, padding, padlen );
JMF	12:0071cb144c7a	1240	mbedtls_md_update( md_ctx, buf + len, md_size );
JMF	12:0071cb144c7a	1241	mbedtls_md_finish( md_ctx, buf + len );
JMF	12:0071cb144c7a	1242	}
JMF	12:0071cb144c7a	1243	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	1244
JMF	12:0071cb144c7a	1245	#if defined(MBEDTLS_ARC4_C) \|\| defined(MBEDTLS_CIPHER_NULL_CIPHER) \|\| \
JMF	12:0071cb144c7a	1246	( defined(MBEDTLS_CIPHER_MODE_CBC) && \
JMF	12:0071cb144c7a	1247	( defined(MBEDTLS_AES_C) \|\| defined(MBEDTLS_CAMELLIA_C) ) )
JMF	12:0071cb144c7a	1248	#define SSL_SOME_MODES_USE_MAC
JMF	12:0071cb144c7a	1249	#endif
JMF	12:0071cb144c7a	1250
JMF	12:0071cb144c7a	1251	/*
JMF	12:0071cb144c7a	1252	* Encryption/decryption functions
JMF	12:0071cb144c7a	1253	*/
JMF	12:0071cb144c7a	1254	static int ssl_encrypt_buf( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	1255	{
JMF	12:0071cb144c7a	1256	mbedtls_cipher_mode_t mode;
JMF	12:0071cb144c7a	1257	int auth_done = 0;
JMF	12:0071cb144c7a	1258
JMF	12:0071cb144c7a	1259	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> encrypt buf" ) );
JMF	12:0071cb144c7a	1260
JMF	12:0071cb144c7a	1261	if( ssl->session_out == NULL \|\| ssl->transform_out == NULL )
JMF	12:0071cb144c7a	1262	{
JMF	12:0071cb144c7a	1263	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1264	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1265	}
JMF	12:0071cb144c7a	1266
JMF	12:0071cb144c7a	1267	mode = mbedtls_cipher_get_cipher_mode( &ssl->transform_out->cipher_ctx_enc );
JMF	12:0071cb144c7a	1268
JMF	12:0071cb144c7a	1269	MBEDTLS_SSL_DEBUG_BUF( 4, "before encrypt: output payload",
JMF	12:0071cb144c7a	1270	ssl->out_msg, ssl->out_msglen );
JMF	12:0071cb144c7a	1271
JMF	12:0071cb144c7a	1272	/*
JMF	12:0071cb144c7a	1273	* Add MAC before if needed
JMF	12:0071cb144c7a	1274	*/
JMF	12:0071cb144c7a	1275	#if defined(SSL_SOME_MODES_USE_MAC)
JMF	12:0071cb144c7a	1276	if( mode == MBEDTLS_MODE_STREAM \|\|
JMF	12:0071cb144c7a	1277	( mode == MBEDTLS_MODE_CBC
JMF	12:0071cb144c7a	1278	#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
JMF	12:0071cb144c7a	1279	&& ssl->session_out->encrypt_then_mac == MBEDTLS_SSL_ETM_DISABLED
JMF	12:0071cb144c7a	1280	#endif
JMF	12:0071cb144c7a	1281	) )
JMF	12:0071cb144c7a	1282	{
JMF	12:0071cb144c7a	1283	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	1284	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	1285	{
JMF	12:0071cb144c7a	1286	ssl_mac( &ssl->transform_out->md_ctx_enc,
JMF	12:0071cb144c7a	1287	ssl->transform_out->mac_enc,
JMF	12:0071cb144c7a	1288	ssl->out_msg, ssl->out_msglen,
JMF	12:0071cb144c7a	1289	ssl->out_ctr, ssl->out_msgtype );
JMF	12:0071cb144c7a	1290	}
JMF	12:0071cb144c7a	1291	else
JMF	12:0071cb144c7a	1292	#endif
JMF	12:0071cb144c7a	1293	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| \
JMF	12:0071cb144c7a	1294	defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	1295	if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_1 )
JMF	12:0071cb144c7a	1296	{
JMF	12:0071cb144c7a	1297	mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc, ssl->out_ctr, 8 );
JMF	12:0071cb144c7a	1298	mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc, ssl->out_hdr, 3 );
JMF	12:0071cb144c7a	1299	mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc, ssl->out_len, 2 );
JMF	12:0071cb144c7a	1300	mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc,
JMF	12:0071cb144c7a	1301	ssl->out_msg, ssl->out_msglen );
JMF	12:0071cb144c7a	1302	mbedtls_md_hmac_finish( &ssl->transform_out->md_ctx_enc,
JMF	12:0071cb144c7a	1303	ssl->out_msg + ssl->out_msglen );
JMF	12:0071cb144c7a	1304	mbedtls_md_hmac_reset( &ssl->transform_out->md_ctx_enc );
JMF	12:0071cb144c7a	1305	}
JMF	12:0071cb144c7a	1306	else
JMF	12:0071cb144c7a	1307	#endif
JMF	12:0071cb144c7a	1308	{
JMF	12:0071cb144c7a	1309	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1310	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1311	}
JMF	12:0071cb144c7a	1312
JMF	12:0071cb144c7a	1313	MBEDTLS_SSL_DEBUG_BUF( 4, "computed mac",
JMF	12:0071cb144c7a	1314	ssl->out_msg + ssl->out_msglen,
JMF	12:0071cb144c7a	1315	ssl->transform_out->maclen );
JMF	12:0071cb144c7a	1316
JMF	12:0071cb144c7a	1317	ssl->out_msglen += ssl->transform_out->maclen;
JMF	12:0071cb144c7a	1318	auth_done++;
JMF	12:0071cb144c7a	1319	}
JMF	12:0071cb144c7a	1320	#endif /* AEAD not the only option */
JMF	12:0071cb144c7a	1321
JMF	12:0071cb144c7a	1322	/*
JMF	12:0071cb144c7a	1323	* Encrypt
JMF	12:0071cb144c7a	1324	*/
JMF	12:0071cb144c7a	1325	#if defined(MBEDTLS_ARC4_C) \|\| defined(MBEDTLS_CIPHER_NULL_CIPHER)
JMF	12:0071cb144c7a	1326	if( mode == MBEDTLS_MODE_STREAM )
JMF	12:0071cb144c7a	1327	{
JMF	12:0071cb144c7a	1328	int ret;
JMF	12:0071cb144c7a	1329	size_t olen = 0;
JMF	12:0071cb144c7a	1330
JMF	12:0071cb144c7a	1331	MBEDTLS_SSL_DEBUG_MSG( 3, ( "before encrypt: msglen = %d, "
JMF	12:0071cb144c7a	1332	"including %d bytes of padding",
JMF	12:0071cb144c7a	1333	ssl->out_msglen, 0 ) );
JMF	12:0071cb144c7a	1334
JMF	12:0071cb144c7a	1335	if( ( ret = mbedtls_cipher_crypt( &ssl->transform_out->cipher_ctx_enc,
JMF	12:0071cb144c7a	1336	ssl->transform_out->iv_enc,
JMF	12:0071cb144c7a	1337	ssl->transform_out->ivlen,
JMF	12:0071cb144c7a	1338	ssl->out_msg, ssl->out_msglen,
JMF	12:0071cb144c7a	1339	ssl->out_msg, &olen ) ) != 0 )
JMF	12:0071cb144c7a	1340	{
JMF	12:0071cb144c7a	1341	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret );
JMF	12:0071cb144c7a	1342	return( ret );
JMF	12:0071cb144c7a	1343	}
JMF	12:0071cb144c7a	1344
JMF	12:0071cb144c7a	1345	if( ssl->out_msglen != olen )
JMF	12:0071cb144c7a	1346	{
JMF	12:0071cb144c7a	1347	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1348	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1349	}
JMF	12:0071cb144c7a	1350	}
JMF	12:0071cb144c7a	1351	else
JMF	12:0071cb144c7a	1352	#endif /* MBEDTLS_ARC4_C \|\| MBEDTLS_CIPHER_NULL_CIPHER */
JMF	12:0071cb144c7a	1353	#if defined(MBEDTLS_GCM_C) \|\| defined(MBEDTLS_CCM_C)
JMF	12:0071cb144c7a	1354	if( mode == MBEDTLS_MODE_GCM \|\|
JMF	12:0071cb144c7a	1355	mode == MBEDTLS_MODE_CCM )
JMF	12:0071cb144c7a	1356	{
JMF	12:0071cb144c7a	1357	int ret;
JMF	12:0071cb144c7a	1358	size_t enc_msglen, olen;
JMF	12:0071cb144c7a	1359	unsigned char *enc_msg;
JMF	12:0071cb144c7a	1360	unsigned char add_data[13];
JMF	12:0071cb144c7a	1361	unsigned char taglen = ssl->transform_out->ciphersuite_info->flags &
JMF	12:0071cb144c7a	1362	MBEDTLS_CIPHERSUITE_SHORT_TAG ? 8 : 16;
JMF	12:0071cb144c7a	1363
JMF	12:0071cb144c7a	1364	memcpy( add_data, ssl->out_ctr, 8 );
JMF	12:0071cb144c7a	1365	add_data[8] = ssl->out_msgtype;
JMF	12:0071cb144c7a	1366	mbedtls_ssl_write_version( ssl->major_ver, ssl->minor_ver,
JMF	12:0071cb144c7a	1367	ssl->conf->transport, add_data + 9 );
JMF	12:0071cb144c7a	1368	add_data[11] = ( ssl->out_msglen >> 8 ) & 0xFF;
JMF	12:0071cb144c7a	1369	add_data[12] = ssl->out_msglen & 0xFF;
JMF	12:0071cb144c7a	1370
JMF	12:0071cb144c7a	1371	MBEDTLS_SSL_DEBUG_BUF( 4, "additional data used for AEAD",
JMF	12:0071cb144c7a	1372	add_data, 13 );
JMF	12:0071cb144c7a	1373
JMF	12:0071cb144c7a	1374	/*
JMF	12:0071cb144c7a	1375	* Generate IV
JMF	12:0071cb144c7a	1376	*/
JMF	12:0071cb144c7a	1377	#if defined(MBEDTLS_SSL_AEAD_RANDOM_IV)
JMF	12:0071cb144c7a	1378	ret = ssl->conf->f_rng( ssl->conf->p_rng,
JMF	12:0071cb144c7a	1379	ssl->transform_out->iv_enc + ssl->transform_out->fixed_ivlen,
JMF	12:0071cb144c7a	1380	ssl->transform_out->ivlen - ssl->transform_out->fixed_ivlen );
JMF	12:0071cb144c7a	1381	if( ret != 0 )
JMF	12:0071cb144c7a	1382	return( ret );
JMF	12:0071cb144c7a	1383
JMF	12:0071cb144c7a	1384	memcpy( ssl->out_iv,
JMF	12:0071cb144c7a	1385	ssl->transform_out->iv_enc + ssl->transform_out->fixed_ivlen,
JMF	12:0071cb144c7a	1386	ssl->transform_out->ivlen - ssl->transform_out->fixed_ivlen );
JMF	12:0071cb144c7a	1387	#else
JMF	12:0071cb144c7a	1388	if( ssl->transform_out->ivlen - ssl->transform_out->fixed_ivlen != 8 )
JMF	12:0071cb144c7a	1389	{
JMF	12:0071cb144c7a	1390	/* Reminder if we ever add an AEAD mode with a different size */
JMF	12:0071cb144c7a	1391	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1392	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1393	}
JMF	12:0071cb144c7a	1394
JMF	12:0071cb144c7a	1395	memcpy( ssl->transform_out->iv_enc + ssl->transform_out->fixed_ivlen,
JMF	12:0071cb144c7a	1396	ssl->out_ctr, 8 );
JMF	12:0071cb144c7a	1397	memcpy( ssl->out_iv, ssl->out_ctr, 8 );
JMF	12:0071cb144c7a	1398	#endif
JMF	12:0071cb144c7a	1399
JMF	12:0071cb144c7a	1400	MBEDTLS_SSL_DEBUG_BUF( 4, "IV used", ssl->out_iv,
JMF	12:0071cb144c7a	1401	ssl->transform_out->ivlen - ssl->transform_out->fixed_ivlen );
JMF	12:0071cb144c7a	1402
JMF	12:0071cb144c7a	1403	/*
JMF	12:0071cb144c7a	1404	* Fix pointer positions and message length with added IV
JMF	12:0071cb144c7a	1405	*/
JMF	12:0071cb144c7a	1406	enc_msg = ssl->out_msg;
JMF	12:0071cb144c7a	1407	enc_msglen = ssl->out_msglen;
JMF	12:0071cb144c7a	1408	ssl->out_msglen += ssl->transform_out->ivlen -
JMF	12:0071cb144c7a	1409	ssl->transform_out->fixed_ivlen;
JMF	12:0071cb144c7a	1410
JMF	12:0071cb144c7a	1411	MBEDTLS_SSL_DEBUG_MSG( 3, ( "before encrypt: msglen = %d, "
JMF	12:0071cb144c7a	1412	"including %d bytes of padding",
JMF	12:0071cb144c7a	1413	ssl->out_msglen, 0 ) );
JMF	12:0071cb144c7a	1414
JMF	12:0071cb144c7a	1415	/*
JMF	12:0071cb144c7a	1416	* Encrypt and authenticate
JMF	12:0071cb144c7a	1417	*/
JMF	12:0071cb144c7a	1418	if( ( ret = mbedtls_cipher_auth_encrypt( &ssl->transform_out->cipher_ctx_enc,
JMF	12:0071cb144c7a	1419	ssl->transform_out->iv_enc,
JMF	12:0071cb144c7a	1420	ssl->transform_out->ivlen,
JMF	12:0071cb144c7a	1421	add_data, 13,
JMF	12:0071cb144c7a	1422	enc_msg, enc_msglen,
JMF	12:0071cb144c7a	1423	enc_msg, &olen,
JMF	12:0071cb144c7a	1424	enc_msg + enc_msglen, taglen ) ) != 0 )
JMF	12:0071cb144c7a	1425	{
JMF	12:0071cb144c7a	1426	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_auth_encrypt", ret );
JMF	12:0071cb144c7a	1427	return( ret );
JMF	12:0071cb144c7a	1428	}
JMF	12:0071cb144c7a	1429
JMF	12:0071cb144c7a	1430	if( olen != enc_msglen )
JMF	12:0071cb144c7a	1431	{
JMF	12:0071cb144c7a	1432	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1433	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1434	}
JMF	12:0071cb144c7a	1435
JMF	12:0071cb144c7a	1436	ssl->out_msglen += taglen;
JMF	12:0071cb144c7a	1437	auth_done++;
JMF	12:0071cb144c7a	1438
JMF	12:0071cb144c7a	1439	MBEDTLS_SSL_DEBUG_BUF( 4, "after encrypt: tag", enc_msg + enc_msglen, taglen );
JMF	12:0071cb144c7a	1440	}
JMF	12:0071cb144c7a	1441	else
JMF	12:0071cb144c7a	1442	#endif /* MBEDTLS_GCM_C \|\| MBEDTLS_CCM_C */
JMF	12:0071cb144c7a	1443	#if defined(MBEDTLS_CIPHER_MODE_CBC) && \
JMF	12:0071cb144c7a	1444	( defined(MBEDTLS_AES_C) \|\| defined(MBEDTLS_CAMELLIA_C) )
JMF	12:0071cb144c7a	1445	if( mode == MBEDTLS_MODE_CBC )
JMF	12:0071cb144c7a	1446	{
JMF	12:0071cb144c7a	1447	int ret;
JMF	12:0071cb144c7a	1448	unsigned char *enc_msg;
JMF	12:0071cb144c7a	1449	size_t enc_msglen, padlen, olen = 0, i;
JMF	12:0071cb144c7a	1450
JMF	12:0071cb144c7a	1451	padlen = ssl->transform_out->ivlen - ( ssl->out_msglen + 1 ) %
JMF	12:0071cb144c7a	1452	ssl->transform_out->ivlen;
JMF	12:0071cb144c7a	1453	if( padlen == ssl->transform_out->ivlen )
JMF	12:0071cb144c7a	1454	padlen = 0;
JMF	12:0071cb144c7a	1455
JMF	12:0071cb144c7a	1456	for( i = 0; i <= padlen; i++ )
JMF	12:0071cb144c7a	1457	ssl->out_msg[ssl->out_msglen + i] = (unsigned char) padlen;
JMF	12:0071cb144c7a	1458
JMF	12:0071cb144c7a	1459	ssl->out_msglen += padlen + 1;
JMF	12:0071cb144c7a	1460
JMF	12:0071cb144c7a	1461	enc_msglen = ssl->out_msglen;
JMF	12:0071cb144c7a	1462	enc_msg = ssl->out_msg;
JMF	12:0071cb144c7a	1463
JMF	12:0071cb144c7a	1464	#if defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	1465	/*
JMF	12:0071cb144c7a	1466	* Prepend per-record IV for block cipher in TLS v1.1 and up as per
JMF	12:0071cb144c7a	1467	* Method 1 (6.2.3.2. in RFC4346 and RFC5246)
JMF	12:0071cb144c7a	1468	*/
JMF	12:0071cb144c7a	1469	if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 )
JMF	12:0071cb144c7a	1470	{
JMF	12:0071cb144c7a	1471	/*
JMF	12:0071cb144c7a	1472	* Generate IV
JMF	12:0071cb144c7a	1473	*/
JMF	12:0071cb144c7a	1474	ret = ssl->conf->f_rng( ssl->conf->p_rng, ssl->transform_out->iv_enc,
JMF	12:0071cb144c7a	1475	ssl->transform_out->ivlen );
JMF	12:0071cb144c7a	1476	if( ret != 0 )
JMF	12:0071cb144c7a	1477	return( ret );
JMF	12:0071cb144c7a	1478
JMF	12:0071cb144c7a	1479	memcpy( ssl->out_iv, ssl->transform_out->iv_enc,
JMF	12:0071cb144c7a	1480	ssl->transform_out->ivlen );
JMF	12:0071cb144c7a	1481
JMF	12:0071cb144c7a	1482	/*
JMF	12:0071cb144c7a	1483	* Fix pointer positions and message length with added IV
JMF	12:0071cb144c7a	1484	*/
JMF	12:0071cb144c7a	1485	enc_msg = ssl->out_msg;
JMF	12:0071cb144c7a	1486	enc_msglen = ssl->out_msglen;
JMF	12:0071cb144c7a	1487	ssl->out_msglen += ssl->transform_out->ivlen;
JMF	12:0071cb144c7a	1488	}
JMF	12:0071cb144c7a	1489	#endif /* MBEDTLS_SSL_PROTO_TLS1_1 \|\| MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	1490
JMF	12:0071cb144c7a	1491	MBEDTLS_SSL_DEBUG_MSG( 3, ( "before encrypt: msglen = %d, "
JMF	12:0071cb144c7a	1492	"including %d bytes of IV and %d bytes of padding",
JMF	12:0071cb144c7a	1493	ssl->out_msglen, ssl->transform_out->ivlen,
JMF	12:0071cb144c7a	1494	padlen + 1 ) );
JMF	12:0071cb144c7a	1495
JMF	12:0071cb144c7a	1496	if( ( ret = mbedtls_cipher_crypt( &ssl->transform_out->cipher_ctx_enc,
JMF	12:0071cb144c7a	1497	ssl->transform_out->iv_enc,
JMF	12:0071cb144c7a	1498	ssl->transform_out->ivlen,
JMF	12:0071cb144c7a	1499	enc_msg, enc_msglen,
JMF	12:0071cb144c7a	1500	enc_msg, &olen ) ) != 0 )
JMF	12:0071cb144c7a	1501	{
JMF	12:0071cb144c7a	1502	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret );
JMF	12:0071cb144c7a	1503	return( ret );
JMF	12:0071cb144c7a	1504	}
JMF	12:0071cb144c7a	1505
JMF	12:0071cb144c7a	1506	if( enc_msglen != olen )
JMF	12:0071cb144c7a	1507	{
JMF	12:0071cb144c7a	1508	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1509	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1510	}
JMF	12:0071cb144c7a	1511
JMF	12:0071cb144c7a	1512	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1)
JMF	12:0071cb144c7a	1513	if( ssl->minor_ver < MBEDTLS_SSL_MINOR_VERSION_2 )
JMF	12:0071cb144c7a	1514	{
JMF	12:0071cb144c7a	1515	/*
JMF	12:0071cb144c7a	1516	* Save IV in SSL3 and TLS1
JMF	12:0071cb144c7a	1517	*/
JMF	12:0071cb144c7a	1518	memcpy( ssl->transform_out->iv_enc,
JMF	12:0071cb144c7a	1519	ssl->transform_out->cipher_ctx_enc.iv,
JMF	12:0071cb144c7a	1520	ssl->transform_out->ivlen );
JMF	12:0071cb144c7a	1521	}
JMF	12:0071cb144c7a	1522	#endif
JMF	12:0071cb144c7a	1523
JMF	12:0071cb144c7a	1524	#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
JMF	12:0071cb144c7a	1525	if( auth_done == 0 )
JMF	12:0071cb144c7a	1526	{
JMF	12:0071cb144c7a	1527	/*
JMF	12:0071cb144c7a	1528	* MAC(MAC_write_key, seq_num +
JMF	12:0071cb144c7a	1529	* TLSCipherText.type +
JMF	12:0071cb144c7a	1530	* TLSCipherText.version +
JMF	12:0071cb144c7a	1531	* length_of( (IV +) ENC(...) ) +
JMF	12:0071cb144c7a	1532	* IV + // except for TLS 1.0
JMF	12:0071cb144c7a	1533	* ENC(content + padding + padding_length));
JMF	12:0071cb144c7a	1534	*/
JMF	12:0071cb144c7a	1535	unsigned char pseudo_hdr[13];
JMF	12:0071cb144c7a	1536
JMF	12:0071cb144c7a	1537	MBEDTLS_SSL_DEBUG_MSG( 3, ( "using encrypt then mac" ) );
JMF	12:0071cb144c7a	1538
JMF	12:0071cb144c7a	1539	memcpy( pseudo_hdr + 0, ssl->out_ctr, 8 );
JMF	12:0071cb144c7a	1540	memcpy( pseudo_hdr + 8, ssl->out_hdr, 3 );
JMF	12:0071cb144c7a	1541	pseudo_hdr[11] = (unsigned char)( ( ssl->out_msglen >> 8 ) & 0xFF );
JMF	12:0071cb144c7a	1542	pseudo_hdr[12] = (unsigned char)( ( ssl->out_msglen ) & 0xFF );
JMF	12:0071cb144c7a	1543
JMF	12:0071cb144c7a	1544	MBEDTLS_SSL_DEBUG_BUF( 4, "MAC'd meta-data", pseudo_hdr, 13 );
JMF	12:0071cb144c7a	1545
JMF	12:0071cb144c7a	1546	mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc, pseudo_hdr, 13 );
JMF	12:0071cb144c7a	1547	mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc,
JMF	12:0071cb144c7a	1548	ssl->out_iv, ssl->out_msglen );
JMF	12:0071cb144c7a	1549	mbedtls_md_hmac_finish( &ssl->transform_out->md_ctx_enc,
JMF	12:0071cb144c7a	1550	ssl->out_iv + ssl->out_msglen );
JMF	12:0071cb144c7a	1551	mbedtls_md_hmac_reset( &ssl->transform_out->md_ctx_enc );
JMF	12:0071cb144c7a	1552
JMF	12:0071cb144c7a	1553	ssl->out_msglen += ssl->transform_out->maclen;
JMF	12:0071cb144c7a	1554	auth_done++;
JMF	12:0071cb144c7a	1555	}
JMF	12:0071cb144c7a	1556	#endif /* MBEDTLS_SSL_ENCRYPT_THEN_MAC */
JMF	12:0071cb144c7a	1557	}
JMF	12:0071cb144c7a	1558	else
JMF	12:0071cb144c7a	1559	#endif /* MBEDTLS_CIPHER_MODE_CBC &&
JMF	12:0071cb144c7a	1560	( MBEDTLS_AES_C \|\| MBEDTLS_CAMELLIA_C ) */
JMF	12:0071cb144c7a	1561	{
JMF	12:0071cb144c7a	1562	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1563	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1564	}
JMF	12:0071cb144c7a	1565
JMF	12:0071cb144c7a	1566	/* Make extra sure authentication was performed, exactly once */
JMF	12:0071cb144c7a	1567	if( auth_done != 1 )
JMF	12:0071cb144c7a	1568	{
JMF	12:0071cb144c7a	1569	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1570	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1571	}
JMF	12:0071cb144c7a	1572
JMF	12:0071cb144c7a	1573	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= encrypt buf" ) );
JMF	12:0071cb144c7a	1574
JMF	12:0071cb144c7a	1575	return( 0 );
JMF	12:0071cb144c7a	1576	}
JMF	12:0071cb144c7a	1577
JMF	12:0071cb144c7a	1578	#define SSL_MAX_MAC_SIZE 48
JMF	12:0071cb144c7a	1579
JMF	12:0071cb144c7a	1580	static int ssl_decrypt_buf( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	1581	{
JMF	12:0071cb144c7a	1582	size_t i;
JMF	12:0071cb144c7a	1583	mbedtls_cipher_mode_t mode;
JMF	12:0071cb144c7a	1584	int auth_done = 0;
JMF	12:0071cb144c7a	1585	#if defined(SSL_SOME_MODES_USE_MAC)
JMF	12:0071cb144c7a	1586	size_t padlen = 0, correct = 1;
JMF	12:0071cb144c7a	1587	#endif
JMF	12:0071cb144c7a	1588
JMF	12:0071cb144c7a	1589	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> decrypt buf" ) );
JMF	12:0071cb144c7a	1590
JMF	12:0071cb144c7a	1591	if( ssl->session_in == NULL \|\| ssl->transform_in == NULL )
JMF	12:0071cb144c7a	1592	{
JMF	12:0071cb144c7a	1593	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1594	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1595	}
JMF	12:0071cb144c7a	1596
JMF	12:0071cb144c7a	1597	mode = mbedtls_cipher_get_cipher_mode( &ssl->transform_in->cipher_ctx_dec );
JMF	12:0071cb144c7a	1598
JMF	12:0071cb144c7a	1599	if( ssl->in_msglen < ssl->transform_in->minlen )
JMF	12:0071cb144c7a	1600	{
JMF	12:0071cb144c7a	1601	MBEDTLS_SSL_DEBUG_MSG( 1, ( "in_msglen (%d) < minlen (%d)",
JMF	12:0071cb144c7a	1602	ssl->in_msglen, ssl->transform_in->minlen ) );
JMF	12:0071cb144c7a	1603	return( MBEDTLS_ERR_SSL_INVALID_MAC );
JMF	12:0071cb144c7a	1604	}
JMF	12:0071cb144c7a	1605
JMF	12:0071cb144c7a	1606	#if defined(MBEDTLS_ARC4_C) \|\| defined(MBEDTLS_CIPHER_NULL_CIPHER)
JMF	12:0071cb144c7a	1607	if( mode == MBEDTLS_MODE_STREAM )
JMF	12:0071cb144c7a	1608	{
JMF	12:0071cb144c7a	1609	int ret;
JMF	12:0071cb144c7a	1610	size_t olen = 0;
JMF	12:0071cb144c7a	1611
JMF	12:0071cb144c7a	1612	padlen = 0;
JMF	12:0071cb144c7a	1613
JMF	12:0071cb144c7a	1614	if( ( ret = mbedtls_cipher_crypt( &ssl->transform_in->cipher_ctx_dec,
JMF	12:0071cb144c7a	1615	ssl->transform_in->iv_dec,
JMF	12:0071cb144c7a	1616	ssl->transform_in->ivlen,
JMF	12:0071cb144c7a	1617	ssl->in_msg, ssl->in_msglen,
JMF	12:0071cb144c7a	1618	ssl->in_msg, &olen ) ) != 0 )
JMF	12:0071cb144c7a	1619	{
JMF	12:0071cb144c7a	1620	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret );
JMF	12:0071cb144c7a	1621	return( ret );
JMF	12:0071cb144c7a	1622	}
JMF	12:0071cb144c7a	1623
JMF	12:0071cb144c7a	1624	if( ssl->in_msglen != olen )
JMF	12:0071cb144c7a	1625	{
JMF	12:0071cb144c7a	1626	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1627	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1628	}
JMF	12:0071cb144c7a	1629	}
JMF	12:0071cb144c7a	1630	else
JMF	12:0071cb144c7a	1631	#endif /* MBEDTLS_ARC4_C \|\| MBEDTLS_CIPHER_NULL_CIPHER */
JMF	12:0071cb144c7a	1632	#if defined(MBEDTLS_GCM_C) \|\| defined(MBEDTLS_CCM_C)
JMF	12:0071cb144c7a	1633	if( mode == MBEDTLS_MODE_GCM \|\|
JMF	12:0071cb144c7a	1634	mode == MBEDTLS_MODE_CCM )
JMF	12:0071cb144c7a	1635	{
JMF	12:0071cb144c7a	1636	int ret;
JMF	12:0071cb144c7a	1637	size_t dec_msglen, olen;
JMF	12:0071cb144c7a	1638	unsigned char *dec_msg;
JMF	12:0071cb144c7a	1639	unsigned char *dec_msg_result;
JMF	12:0071cb144c7a	1640	unsigned char add_data[13];
JMF	12:0071cb144c7a	1641	unsigned char taglen = ssl->transform_in->ciphersuite_info->flags &
JMF	12:0071cb144c7a	1642	MBEDTLS_CIPHERSUITE_SHORT_TAG ? 8 : 16;
JMF	12:0071cb144c7a	1643	size_t explicit_iv_len = ssl->transform_in->ivlen -
JMF	12:0071cb144c7a	1644	ssl->transform_in->fixed_ivlen;
JMF	12:0071cb144c7a	1645
JMF	12:0071cb144c7a	1646	if( ssl->in_msglen < explicit_iv_len + taglen )
JMF	12:0071cb144c7a	1647	{
JMF	12:0071cb144c7a	1648	MBEDTLS_SSL_DEBUG_MSG( 1, ( "msglen (%d) < explicit_iv_len (%d) "
JMF	12:0071cb144c7a	1649	"+ taglen (%d)", ssl->in_msglen,
JMF	12:0071cb144c7a	1650	explicit_iv_len, taglen ) );
JMF	12:0071cb144c7a	1651	return( MBEDTLS_ERR_SSL_INVALID_MAC );
JMF	12:0071cb144c7a	1652	}
JMF	12:0071cb144c7a	1653	dec_msglen = ssl->in_msglen - explicit_iv_len - taglen;
JMF	12:0071cb144c7a	1654
JMF	12:0071cb144c7a	1655	dec_msg = ssl->in_msg;
JMF	12:0071cb144c7a	1656	dec_msg_result = ssl->in_msg;
JMF	12:0071cb144c7a	1657	ssl->in_msglen = dec_msglen;
JMF	12:0071cb144c7a	1658
JMF	12:0071cb144c7a	1659	memcpy( add_data, ssl->in_ctr, 8 );
JMF	12:0071cb144c7a	1660	add_data[8] = ssl->in_msgtype;
JMF	12:0071cb144c7a	1661	mbedtls_ssl_write_version( ssl->major_ver, ssl->minor_ver,
JMF	12:0071cb144c7a	1662	ssl->conf->transport, add_data + 9 );
JMF	12:0071cb144c7a	1663	add_data[11] = ( ssl->in_msglen >> 8 ) & 0xFF;
JMF	12:0071cb144c7a	1664	add_data[12] = ssl->in_msglen & 0xFF;
JMF	12:0071cb144c7a	1665
JMF	12:0071cb144c7a	1666	MBEDTLS_SSL_DEBUG_BUF( 4, "additional data used for AEAD",
JMF	12:0071cb144c7a	1667	add_data, 13 );
JMF	12:0071cb144c7a	1668
JMF	12:0071cb144c7a	1669	memcpy( ssl->transform_in->iv_dec + ssl->transform_in->fixed_ivlen,
JMF	12:0071cb144c7a	1670	ssl->in_iv,
JMF	12:0071cb144c7a	1671	ssl->transform_in->ivlen - ssl->transform_in->fixed_ivlen );
JMF	12:0071cb144c7a	1672
JMF	12:0071cb144c7a	1673	MBEDTLS_SSL_DEBUG_BUF( 4, "IV used", ssl->transform_in->iv_dec,
JMF	12:0071cb144c7a	1674	ssl->transform_in->ivlen );
JMF	12:0071cb144c7a	1675	MBEDTLS_SSL_DEBUG_BUF( 4, "TAG used", dec_msg + dec_msglen, taglen );
JMF	12:0071cb144c7a	1676
JMF	12:0071cb144c7a	1677	/*
JMF	12:0071cb144c7a	1678	* Decrypt and authenticate
JMF	12:0071cb144c7a	1679	*/
JMF	12:0071cb144c7a	1680	if( ( ret = mbedtls_cipher_auth_decrypt( &ssl->transform_in->cipher_ctx_dec,
JMF	12:0071cb144c7a	1681	ssl->transform_in->iv_dec,
JMF	12:0071cb144c7a	1682	ssl->transform_in->ivlen,
JMF	12:0071cb144c7a	1683	add_data, 13,
JMF	12:0071cb144c7a	1684	dec_msg, dec_msglen,
JMF	12:0071cb144c7a	1685	dec_msg_result, &olen,
JMF	12:0071cb144c7a	1686	dec_msg + dec_msglen, taglen ) ) != 0 )
JMF	12:0071cb144c7a	1687	{
JMF	12:0071cb144c7a	1688	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_auth_decrypt", ret );
JMF	12:0071cb144c7a	1689
JMF	12:0071cb144c7a	1690	if( ret == MBEDTLS_ERR_CIPHER_AUTH_FAILED )
JMF	12:0071cb144c7a	1691	return( MBEDTLS_ERR_SSL_INVALID_MAC );
JMF	12:0071cb144c7a	1692
JMF	12:0071cb144c7a	1693	return( ret );
JMF	12:0071cb144c7a	1694	}
JMF	12:0071cb144c7a	1695	auth_done++;
JMF	12:0071cb144c7a	1696
JMF	12:0071cb144c7a	1697	if( olen != dec_msglen )
JMF	12:0071cb144c7a	1698	{
JMF	12:0071cb144c7a	1699	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1700	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1701	}
JMF	12:0071cb144c7a	1702	}
JMF	12:0071cb144c7a	1703	else
JMF	12:0071cb144c7a	1704	#endif /* MBEDTLS_GCM_C \|\| MBEDTLS_CCM_C */
JMF	12:0071cb144c7a	1705	#if defined(MBEDTLS_CIPHER_MODE_CBC) && \
JMF	12:0071cb144c7a	1706	( defined(MBEDTLS_AES_C) \|\| defined(MBEDTLS_CAMELLIA_C) )
JMF	12:0071cb144c7a	1707	if( mode == MBEDTLS_MODE_CBC )
JMF	12:0071cb144c7a	1708	{
JMF	12:0071cb144c7a	1709	/*
JMF	12:0071cb144c7a	1710	* Decrypt and check the padding
JMF	12:0071cb144c7a	1711	*/
JMF	12:0071cb144c7a	1712	int ret;
JMF	12:0071cb144c7a	1713	unsigned char *dec_msg;
JMF	12:0071cb144c7a	1714	unsigned char *dec_msg_result;
JMF	12:0071cb144c7a	1715	size_t dec_msglen;
JMF	12:0071cb144c7a	1716	size_t minlen = 0;
JMF	12:0071cb144c7a	1717	size_t olen = 0;
JMF	12:0071cb144c7a	1718
JMF	12:0071cb144c7a	1719	/*
JMF	12:0071cb144c7a	1720	* Check immediate ciphertext sanity
JMF	12:0071cb144c7a	1721	*/
JMF	12:0071cb144c7a	1722	#if defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	1723	if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 )
JMF	12:0071cb144c7a	1724	minlen += ssl->transform_in->ivlen;
JMF	12:0071cb144c7a	1725	#endif
JMF	12:0071cb144c7a	1726
JMF	12:0071cb144c7a	1727	if( ssl->in_msglen < minlen + ssl->transform_in->ivlen \|\|
JMF	12:0071cb144c7a	1728	ssl->in_msglen < minlen + ssl->transform_in->maclen + 1 )
JMF	12:0071cb144c7a	1729	{
JMF	12:0071cb144c7a	1730	MBEDTLS_SSL_DEBUG_MSG( 1, ( "msglen (%d) < max( ivlen(%d), maclen (%d) "
JMF	12:0071cb144c7a	1731	"+ 1 ) ( + expl IV )", ssl->in_msglen,
JMF	12:0071cb144c7a	1732	ssl->transform_in->ivlen,
JMF	12:0071cb144c7a	1733	ssl->transform_in->maclen ) );
JMF	12:0071cb144c7a	1734	return( MBEDTLS_ERR_SSL_INVALID_MAC );
JMF	12:0071cb144c7a	1735	}
JMF	12:0071cb144c7a	1736
JMF	12:0071cb144c7a	1737	dec_msglen = ssl->in_msglen;
JMF	12:0071cb144c7a	1738	dec_msg = ssl->in_msg;
JMF	12:0071cb144c7a	1739	dec_msg_result = ssl->in_msg;
JMF	12:0071cb144c7a	1740
JMF	12:0071cb144c7a	1741	/*
JMF	12:0071cb144c7a	1742	* Authenticate before decrypt if enabled
JMF	12:0071cb144c7a	1743	*/
JMF	12:0071cb144c7a	1744	#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
JMF	12:0071cb144c7a	1745	if( ssl->session_in->encrypt_then_mac == MBEDTLS_SSL_ETM_ENABLED )
JMF	12:0071cb144c7a	1746	{
JMF	12:0071cb144c7a	1747	unsigned char computed_mac[SSL_MAX_MAC_SIZE];
JMF	12:0071cb144c7a	1748	unsigned char pseudo_hdr[13];
JMF	12:0071cb144c7a	1749
JMF	12:0071cb144c7a	1750	MBEDTLS_SSL_DEBUG_MSG( 3, ( "using encrypt then mac" ) );
JMF	12:0071cb144c7a	1751
JMF	12:0071cb144c7a	1752	dec_msglen -= ssl->transform_in->maclen;
JMF	12:0071cb144c7a	1753	ssl->in_msglen -= ssl->transform_in->maclen;
JMF	12:0071cb144c7a	1754
JMF	12:0071cb144c7a	1755	memcpy( pseudo_hdr + 0, ssl->in_ctr, 8 );
JMF	12:0071cb144c7a	1756	memcpy( pseudo_hdr + 8, ssl->in_hdr, 3 );
JMF	12:0071cb144c7a	1757	pseudo_hdr[11] = (unsigned char)( ( ssl->in_msglen >> 8 ) & 0xFF );
JMF	12:0071cb144c7a	1758	pseudo_hdr[12] = (unsigned char)( ( ssl->in_msglen ) & 0xFF );
JMF	12:0071cb144c7a	1759
JMF	12:0071cb144c7a	1760	MBEDTLS_SSL_DEBUG_BUF( 4, "MAC'd meta-data", pseudo_hdr, 13 );
JMF	12:0071cb144c7a	1761
JMF	12:0071cb144c7a	1762	mbedtls_md_hmac_update( &ssl->transform_in->md_ctx_dec, pseudo_hdr, 13 );
JMF	12:0071cb144c7a	1763	mbedtls_md_hmac_update( &ssl->transform_in->md_ctx_dec,
JMF	12:0071cb144c7a	1764	ssl->in_iv, ssl->in_msglen );
JMF	12:0071cb144c7a	1765	mbedtls_md_hmac_finish( &ssl->transform_in->md_ctx_dec, computed_mac );
JMF	12:0071cb144c7a	1766	mbedtls_md_hmac_reset( &ssl->transform_in->md_ctx_dec );
JMF	12:0071cb144c7a	1767
JMF	12:0071cb144c7a	1768	MBEDTLS_SSL_DEBUG_BUF( 4, "message mac", ssl->in_iv + ssl->in_msglen,
JMF	12:0071cb144c7a	1769	ssl->transform_in->maclen );
JMF	12:0071cb144c7a	1770	MBEDTLS_SSL_DEBUG_BUF( 4, "computed mac", computed_mac,
JMF	12:0071cb144c7a	1771	ssl->transform_in->maclen );
JMF	12:0071cb144c7a	1772
JMF	12:0071cb144c7a	1773	if( mbedtls_ssl_safer_memcmp( ssl->in_iv + ssl->in_msglen, computed_mac,
JMF	12:0071cb144c7a	1774	ssl->transform_in->maclen ) != 0 )
JMF	12:0071cb144c7a	1775	{
JMF	12:0071cb144c7a	1776	MBEDTLS_SSL_DEBUG_MSG( 1, ( "message mac does not match" ) );
JMF	12:0071cb144c7a	1777
JMF	12:0071cb144c7a	1778	return( MBEDTLS_ERR_SSL_INVALID_MAC );
JMF	12:0071cb144c7a	1779	}
JMF	12:0071cb144c7a	1780	auth_done++;
JMF	12:0071cb144c7a	1781	}
JMF	12:0071cb144c7a	1782	#endif /* MBEDTLS_SSL_ENCRYPT_THEN_MAC */
JMF	12:0071cb144c7a	1783
JMF	12:0071cb144c7a	1784	/*
JMF	12:0071cb144c7a	1785	* Check length sanity
JMF	12:0071cb144c7a	1786	*/
JMF	12:0071cb144c7a	1787	if( ssl->in_msglen % ssl->transform_in->ivlen != 0 )
JMF	12:0071cb144c7a	1788	{
JMF	12:0071cb144c7a	1789	MBEDTLS_SSL_DEBUG_MSG( 1, ( "msglen (%d) %% ivlen (%d) != 0",
JMF	12:0071cb144c7a	1790	ssl->in_msglen, ssl->transform_in->ivlen ) );
JMF	12:0071cb144c7a	1791	return( MBEDTLS_ERR_SSL_INVALID_MAC );
JMF	12:0071cb144c7a	1792	}
JMF	12:0071cb144c7a	1793
JMF	12:0071cb144c7a	1794	#if defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	1795	/*
JMF	12:0071cb144c7a	1796	* Initialize for prepended IV for block cipher in TLS v1.1 and up
JMF	12:0071cb144c7a	1797	*/
JMF	12:0071cb144c7a	1798	if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 )
JMF	12:0071cb144c7a	1799	{
JMF	12:0071cb144c7a	1800	dec_msglen -= ssl->transform_in->ivlen;
JMF	12:0071cb144c7a	1801	ssl->in_msglen -= ssl->transform_in->ivlen;
JMF	12:0071cb144c7a	1802
JMF	12:0071cb144c7a	1803	for( i = 0; i < ssl->transform_in->ivlen; i++ )
JMF	12:0071cb144c7a	1804	ssl->transform_in->iv_dec[i] = ssl->in_iv[i];
JMF	12:0071cb144c7a	1805	}
JMF	12:0071cb144c7a	1806	#endif /* MBEDTLS_SSL_PROTO_TLS1_1 \|\| MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	1807
JMF	12:0071cb144c7a	1808	if( ( ret = mbedtls_cipher_crypt( &ssl->transform_in->cipher_ctx_dec,
JMF	12:0071cb144c7a	1809	ssl->transform_in->iv_dec,
JMF	12:0071cb144c7a	1810	ssl->transform_in->ivlen,
JMF	12:0071cb144c7a	1811	dec_msg, dec_msglen,
JMF	12:0071cb144c7a	1812	dec_msg_result, &olen ) ) != 0 )
JMF	12:0071cb144c7a	1813	{
JMF	12:0071cb144c7a	1814	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_crypt", ret );
JMF	12:0071cb144c7a	1815	return( ret );
JMF	12:0071cb144c7a	1816	}
JMF	12:0071cb144c7a	1817
JMF	12:0071cb144c7a	1818	if( dec_msglen != olen )
JMF	12:0071cb144c7a	1819	{
JMF	12:0071cb144c7a	1820	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1821	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1822	}
JMF	12:0071cb144c7a	1823
JMF	12:0071cb144c7a	1824	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1)
JMF	12:0071cb144c7a	1825	if( ssl->minor_ver < MBEDTLS_SSL_MINOR_VERSION_2 )
JMF	12:0071cb144c7a	1826	{
JMF	12:0071cb144c7a	1827	/*
JMF	12:0071cb144c7a	1828	* Save IV in SSL3 and TLS1
JMF	12:0071cb144c7a	1829	*/
JMF	12:0071cb144c7a	1830	memcpy( ssl->transform_in->iv_dec,
JMF	12:0071cb144c7a	1831	ssl->transform_in->cipher_ctx_dec.iv,
JMF	12:0071cb144c7a	1832	ssl->transform_in->ivlen );
JMF	12:0071cb144c7a	1833	}
JMF	12:0071cb144c7a	1834	#endif
JMF	12:0071cb144c7a	1835
JMF	12:0071cb144c7a	1836	padlen = 1 + ssl->in_msg[ssl->in_msglen - 1];
JMF	12:0071cb144c7a	1837
JMF	12:0071cb144c7a	1838	if( ssl->in_msglen < ssl->transform_in->maclen + padlen &&
JMF	12:0071cb144c7a	1839	auth_done == 0 )
JMF	12:0071cb144c7a	1840	{
JMF	12:0071cb144c7a	1841	#if defined(MBEDTLS_SSL_DEBUG_ALL)
JMF	12:0071cb144c7a	1842	MBEDTLS_SSL_DEBUG_MSG( 1, ( "msglen (%d) < maclen (%d) + padlen (%d)",
JMF	12:0071cb144c7a	1843	ssl->in_msglen, ssl->transform_in->maclen, padlen ) );
JMF	12:0071cb144c7a	1844	#endif
JMF	12:0071cb144c7a	1845	padlen = 0;
JMF	12:0071cb144c7a	1846	correct = 0;
JMF	12:0071cb144c7a	1847	}
JMF	12:0071cb144c7a	1848
JMF	12:0071cb144c7a	1849	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	1850	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	1851	{
JMF	12:0071cb144c7a	1852	if( padlen > ssl->transform_in->ivlen )
JMF	12:0071cb144c7a	1853	{
JMF	12:0071cb144c7a	1854	#if defined(MBEDTLS_SSL_DEBUG_ALL)
JMF	12:0071cb144c7a	1855	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad padding length: is %d, "
JMF	12:0071cb144c7a	1856	"should be no more than %d",
JMF	12:0071cb144c7a	1857	padlen, ssl->transform_in->ivlen ) );
JMF	12:0071cb144c7a	1858	#endif
JMF	12:0071cb144c7a	1859	correct = 0;
JMF	12:0071cb144c7a	1860	}
JMF	12:0071cb144c7a	1861	}
JMF	12:0071cb144c7a	1862	else
JMF	12:0071cb144c7a	1863	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	1864	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| \
JMF	12:0071cb144c7a	1865	defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	1866	if( ssl->minor_ver > MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	1867	{
JMF	12:0071cb144c7a	1868	/*
JMF	12:0071cb144c7a	1869	* TLSv1+: always check the padding up to the first failure
JMF	12:0071cb144c7a	1870	* and fake check up to 256 bytes of padding
JMF	12:0071cb144c7a	1871	*/
JMF	12:0071cb144c7a	1872	size_t pad_count = 0, real_count = 1;
JMF	12:0071cb144c7a	1873	size_t padding_idx = ssl->in_msglen - padlen - 1;
JMF	12:0071cb144c7a	1874
JMF	12:0071cb144c7a	1875	/*
JMF	12:0071cb144c7a	1876	* Padding is guaranteed to be incorrect if:
JMF	12:0071cb144c7a	1877	* 1. padlen >= ssl->in_msglen
JMF	12:0071cb144c7a	1878	*
JMF	12:0071cb144c7a	1879	* 2. padding_idx >= MBEDTLS_SSL_MAX_CONTENT_LEN +
JMF	12:0071cb144c7a	1880	* ssl->transform_in->maclen
JMF	12:0071cb144c7a	1881	*
JMF	12:0071cb144c7a	1882	* In both cases we reset padding_idx to a safe value (0) to
JMF	12:0071cb144c7a	1883	* prevent out-of-buffer reads.
JMF	12:0071cb144c7a	1884	*/
JMF	12:0071cb144c7a	1885	correct &= ( ssl->in_msglen >= padlen + 1 );
JMF	12:0071cb144c7a	1886	correct &= ( padding_idx < MBEDTLS_SSL_MAX_CONTENT_LEN +
JMF	12:0071cb144c7a	1887	ssl->transform_in->maclen );
JMF	12:0071cb144c7a	1888
JMF	12:0071cb144c7a	1889	padding_idx *= correct;
JMF	12:0071cb144c7a	1890
JMF	12:0071cb144c7a	1891	for( i = 1; i <= 256; i++ )
JMF	12:0071cb144c7a	1892	{
JMF	12:0071cb144c7a	1893	real_count &= ( i <= padlen );
JMF	12:0071cb144c7a	1894	pad_count += real_count *
JMF	12:0071cb144c7a	1895	( ssl->in_msg[padding_idx + i] == padlen - 1 );
JMF	12:0071cb144c7a	1896	}
JMF	12:0071cb144c7a	1897
JMF	12:0071cb144c7a	1898	correct &= ( pad_count == padlen ); /* Only 1 on correct padding */
JMF	12:0071cb144c7a	1899
JMF	12:0071cb144c7a	1900	#if defined(MBEDTLS_SSL_DEBUG_ALL)
JMF	12:0071cb144c7a	1901	if( padlen > 0 && correct == 0 )
JMF	12:0071cb144c7a	1902	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad padding byte detected" ) );
JMF	12:0071cb144c7a	1903	#endif
JMF	12:0071cb144c7a	1904	padlen &= correct * 0x1FF;
JMF	12:0071cb144c7a	1905	}
JMF	12:0071cb144c7a	1906	else
JMF	12:0071cb144c7a	1907	#endif /* MBEDTLS_SSL_PROTO_TLS1 \|\| MBEDTLS_SSL_PROTO_TLS1_1 \|\| \
JMF	12:0071cb144c7a	1908	MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	1909	{
JMF	12:0071cb144c7a	1910	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1911	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1912	}
JMF	12:0071cb144c7a	1913
JMF	12:0071cb144c7a	1914	ssl->in_msglen -= padlen;
JMF	12:0071cb144c7a	1915	}
JMF	12:0071cb144c7a	1916	else
JMF	12:0071cb144c7a	1917	#endif /* MBEDTLS_CIPHER_MODE_CBC &&
JMF	12:0071cb144c7a	1918	( MBEDTLS_AES_C \|\| MBEDTLS_CAMELLIA_C ) */
JMF	12:0071cb144c7a	1919	{
JMF	12:0071cb144c7a	1920	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1921	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1922	}
JMF	12:0071cb144c7a	1923
JMF	12:0071cb144c7a	1924	MBEDTLS_SSL_DEBUG_BUF( 4, "raw buffer after decryption",
JMF	12:0071cb144c7a	1925	ssl->in_msg, ssl->in_msglen );
JMF	12:0071cb144c7a	1926
JMF	12:0071cb144c7a	1927	/*
JMF	12:0071cb144c7a	1928	* Authenticate if not done yet.
JMF	12:0071cb144c7a	1929	* Compute the MAC regardless of the padding result (RFC4346, CBCTIME).
JMF	12:0071cb144c7a	1930	*/
JMF	12:0071cb144c7a	1931	#if defined(SSL_SOME_MODES_USE_MAC)
JMF	12:0071cb144c7a	1932	if( auth_done == 0 )
JMF	12:0071cb144c7a	1933	{
JMF	12:0071cb144c7a	1934	unsigned char tmp[SSL_MAX_MAC_SIZE];
JMF	12:0071cb144c7a	1935
JMF	12:0071cb144c7a	1936	ssl->in_msglen -= ssl->transform_in->maclen;
JMF	12:0071cb144c7a	1937
JMF	12:0071cb144c7a	1938	ssl->in_len[0] = (unsigned char)( ssl->in_msglen >> 8 );
JMF	12:0071cb144c7a	1939	ssl->in_len[1] = (unsigned char)( ssl->in_msglen );
JMF	12:0071cb144c7a	1940
JMF	12:0071cb144c7a	1941	memcpy( tmp, ssl->in_msg + ssl->in_msglen, ssl->transform_in->maclen );
JMF	12:0071cb144c7a	1942
JMF	12:0071cb144c7a	1943	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	1944	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	1945	{
JMF	12:0071cb144c7a	1946	ssl_mac( &ssl->transform_in->md_ctx_dec,
JMF	12:0071cb144c7a	1947	ssl->transform_in->mac_dec,
JMF	12:0071cb144c7a	1948	ssl->in_msg, ssl->in_msglen,
JMF	12:0071cb144c7a	1949	ssl->in_ctr, ssl->in_msgtype );
JMF	12:0071cb144c7a	1950	}
JMF	12:0071cb144c7a	1951	else
JMF	12:0071cb144c7a	1952	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	1953	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| \
JMF	12:0071cb144c7a	1954	defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	1955	if( ssl->minor_ver > MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	1956	{
JMF	12:0071cb144c7a	1957	/*
JMF	12:0071cb144c7a	1958	* Process MAC and always update for padlen afterwards to make
JMF	12:0071cb144c7a	1959	* total time independent of padlen
JMF	12:0071cb144c7a	1960	*
JMF	12:0071cb144c7a	1961	* extra_run compensates MAC check for padlen
JMF	12:0071cb144c7a	1962	*
JMF	12:0071cb144c7a	1963	* Known timing attacks:
JMF	12:0071cb144c7a	1964	* - Lucky Thirteen (http://www.isg.rhul.ac.uk/tls/TLStiming.pdf)
JMF	12:0071cb144c7a	1965	*
JMF	12:0071cb144c7a	1966	* We use ( ( Lx + 8 ) / 64 ) to handle 'negative Lx' values
JMF	12:0071cb144c7a	1967	* correctly. (We round down instead of up, so -56 is the correct
JMF	12:0071cb144c7a	1968	* value for our calculations instead of -55)
JMF	12:0071cb144c7a	1969	*/
JMF	12:0071cb144c7a	1970	size_t j, extra_run = 0;
JMF	12:0071cb144c7a	1971	extra_run = ( 13 + ssl->in_msglen + padlen + 8 ) / 64 -
JMF	12:0071cb144c7a	1972	( 13 + ssl->in_msglen + 8 ) / 64;
JMF	12:0071cb144c7a	1973
JMF	12:0071cb144c7a	1974	extra_run &= correct * 0xFF;
JMF	12:0071cb144c7a	1975
JMF	12:0071cb144c7a	1976	mbedtls_md_hmac_update( &ssl->transform_in->md_ctx_dec, ssl->in_ctr, 8 );
JMF	12:0071cb144c7a	1977	mbedtls_md_hmac_update( &ssl->transform_in->md_ctx_dec, ssl->in_hdr, 3 );
JMF	12:0071cb144c7a	1978	mbedtls_md_hmac_update( &ssl->transform_in->md_ctx_dec, ssl->in_len, 2 );
JMF	12:0071cb144c7a	1979	mbedtls_md_hmac_update( &ssl->transform_in->md_ctx_dec, ssl->in_msg,
JMF	12:0071cb144c7a	1980	ssl->in_msglen );
JMF	12:0071cb144c7a	1981	mbedtls_md_hmac_finish( &ssl->transform_in->md_ctx_dec,
JMF	12:0071cb144c7a	1982	ssl->in_msg + ssl->in_msglen );
JMF	12:0071cb144c7a	1983	/* Call mbedtls_md_process at least once due to cache attacks */
JMF	12:0071cb144c7a	1984	for( j = 0; j < extra_run + 1; j++ )
JMF	12:0071cb144c7a	1985	mbedtls_md_process( &ssl->transform_in->md_ctx_dec, ssl->in_msg );
JMF	12:0071cb144c7a	1986
JMF	12:0071cb144c7a	1987	mbedtls_md_hmac_reset( &ssl->transform_in->md_ctx_dec );
JMF	12:0071cb144c7a	1988	}
JMF	12:0071cb144c7a	1989	else
JMF	12:0071cb144c7a	1990	#endif /* MBEDTLS_SSL_PROTO_TLS1 \|\| MBEDTLS_SSL_PROTO_TLS1_1 \|\| \
JMF	12:0071cb144c7a	1991	MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	1992	{
JMF	12:0071cb144c7a	1993	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	1994	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	1995	}
JMF	12:0071cb144c7a	1996
JMF	12:0071cb144c7a	1997	MBEDTLS_SSL_DEBUG_BUF( 4, "message mac", tmp, ssl->transform_in->maclen );
JMF	12:0071cb144c7a	1998	MBEDTLS_SSL_DEBUG_BUF( 4, "computed mac", ssl->in_msg + ssl->in_msglen,
JMF	12:0071cb144c7a	1999	ssl->transform_in->maclen );
JMF	12:0071cb144c7a	2000
JMF	12:0071cb144c7a	2001	if( mbedtls_ssl_safer_memcmp( tmp, ssl->in_msg + ssl->in_msglen,
JMF	12:0071cb144c7a	2002	ssl->transform_in->maclen ) != 0 )
JMF	12:0071cb144c7a	2003	{
JMF	12:0071cb144c7a	2004	#if defined(MBEDTLS_SSL_DEBUG_ALL)
JMF	12:0071cb144c7a	2005	MBEDTLS_SSL_DEBUG_MSG( 1, ( "message mac does not match" ) );
JMF	12:0071cb144c7a	2006	#endif
JMF	12:0071cb144c7a	2007	correct = 0;
JMF	12:0071cb144c7a	2008	}
JMF	12:0071cb144c7a	2009	auth_done++;
JMF	12:0071cb144c7a	2010
JMF	12:0071cb144c7a	2011	/*
JMF	12:0071cb144c7a	2012	* Finally check the correct flag
JMF	12:0071cb144c7a	2013	*/
JMF	12:0071cb144c7a	2014	if( correct == 0 )
JMF	12:0071cb144c7a	2015	return( MBEDTLS_ERR_SSL_INVALID_MAC );
JMF	12:0071cb144c7a	2016	}
JMF	12:0071cb144c7a	2017	#endif /* SSL_SOME_MODES_USE_MAC */
JMF	12:0071cb144c7a	2018
JMF	12:0071cb144c7a	2019	/* Make extra sure authentication was performed, exactly once */
JMF	12:0071cb144c7a	2020	if( auth_done != 1 )
JMF	12:0071cb144c7a	2021	{
JMF	12:0071cb144c7a	2022	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	2023	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	2024	}
JMF	12:0071cb144c7a	2025
JMF	12:0071cb144c7a	2026	if( ssl->in_msglen == 0 )
JMF	12:0071cb144c7a	2027	{
JMF	12:0071cb144c7a	2028	ssl->nb_zero++;
JMF	12:0071cb144c7a	2029
JMF	12:0071cb144c7a	2030	/*
JMF	12:0071cb144c7a	2031	* Three or more empty messages may be a DoS attack
JMF	12:0071cb144c7a	2032	* (excessive CPU consumption).
JMF	12:0071cb144c7a	2033	*/
JMF	12:0071cb144c7a	2034	if( ssl->nb_zero > 3 )
JMF	12:0071cb144c7a	2035	{
JMF	12:0071cb144c7a	2036	MBEDTLS_SSL_DEBUG_MSG( 1, ( "received four consecutive empty "
JMF	12:0071cb144c7a	2037	"messages, possible DoS attack" ) );
JMF	12:0071cb144c7a	2038	return( MBEDTLS_ERR_SSL_INVALID_MAC );
JMF	12:0071cb144c7a	2039	}
JMF	12:0071cb144c7a	2040	}
JMF	12:0071cb144c7a	2041	else
JMF	12:0071cb144c7a	2042	ssl->nb_zero = 0;
JMF	12:0071cb144c7a	2043
JMF	12:0071cb144c7a	2044	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	2045	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	2046	{
JMF	12:0071cb144c7a	2047	; /* in_ctr read from peer, not maintained internally */
JMF	12:0071cb144c7a	2048	}
JMF	12:0071cb144c7a	2049	else
JMF	12:0071cb144c7a	2050	#endif
JMF	12:0071cb144c7a	2051	{
JMF	12:0071cb144c7a	2052	for( i = 8; i > ssl_ep_len( ssl ); i-- )
JMF	12:0071cb144c7a	2053	if( ++ssl->in_ctr[i - 1] != 0 )
JMF	12:0071cb144c7a	2054	break;
JMF	12:0071cb144c7a	2055
JMF	12:0071cb144c7a	2056	/* The loop goes to its end iff the counter is wrapping */
JMF	12:0071cb144c7a	2057	if( i == ssl_ep_len( ssl ) )
JMF	12:0071cb144c7a	2058	{
JMF	12:0071cb144c7a	2059	MBEDTLS_SSL_DEBUG_MSG( 1, ( "incoming message counter would wrap" ) );
JMF	12:0071cb144c7a	2060	return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING );
JMF	12:0071cb144c7a	2061	}
JMF	12:0071cb144c7a	2062	}
JMF	12:0071cb144c7a	2063
JMF	12:0071cb144c7a	2064	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= decrypt buf" ) );
JMF	12:0071cb144c7a	2065
JMF	12:0071cb144c7a	2066	return( 0 );
JMF	12:0071cb144c7a	2067	}
JMF	12:0071cb144c7a	2068
JMF	12:0071cb144c7a	2069	#undef MAC_NONE
JMF	12:0071cb144c7a	2070	#undef MAC_PLAINTEXT
JMF	12:0071cb144c7a	2071	#undef MAC_CIPHERTEXT
JMF	12:0071cb144c7a	2072
JMF	12:0071cb144c7a	2073	#if defined(MBEDTLS_ZLIB_SUPPORT)
JMF	12:0071cb144c7a	2074	/*
JMF	12:0071cb144c7a	2075	* Compression/decompression functions
JMF	12:0071cb144c7a	2076	*/
JMF	12:0071cb144c7a	2077	static int ssl_compress_buf( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2078	{
JMF	12:0071cb144c7a	2079	int ret;
JMF	12:0071cb144c7a	2080	unsigned char *msg_post = ssl->out_msg;
JMF	12:0071cb144c7a	2081	size_t len_pre = ssl->out_msglen;
JMF	12:0071cb144c7a	2082	unsigned char *msg_pre = ssl->compress_buf;
JMF	12:0071cb144c7a	2083
JMF	12:0071cb144c7a	2084	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> compress buf" ) );
JMF	12:0071cb144c7a	2085
JMF	12:0071cb144c7a	2086	if( len_pre == 0 )
JMF	12:0071cb144c7a	2087	return( 0 );
JMF	12:0071cb144c7a	2088
JMF	12:0071cb144c7a	2089	memcpy( msg_pre, ssl->out_msg, len_pre );
JMF	12:0071cb144c7a	2090
JMF	12:0071cb144c7a	2091	MBEDTLS_SSL_DEBUG_MSG( 3, ( "before compression: msglen = %d, ",
JMF	12:0071cb144c7a	2092	ssl->out_msglen ) );
JMF	12:0071cb144c7a	2093
JMF	12:0071cb144c7a	2094	MBEDTLS_SSL_DEBUG_BUF( 4, "before compression: output payload",
JMF	12:0071cb144c7a	2095	ssl->out_msg, ssl->out_msglen );
JMF	12:0071cb144c7a	2096
JMF	12:0071cb144c7a	2097	ssl->transform_out->ctx_deflate.next_in = msg_pre;
JMF	12:0071cb144c7a	2098	ssl->transform_out->ctx_deflate.avail_in = len_pre;
JMF	12:0071cb144c7a	2099	ssl->transform_out->ctx_deflate.next_out = msg_post;
JMF	12:0071cb144c7a	2100	ssl->transform_out->ctx_deflate.avail_out = MBEDTLS_SSL_BUFFER_LEN;
JMF	12:0071cb144c7a	2101
JMF	12:0071cb144c7a	2102	ret = deflate( &ssl->transform_out->ctx_deflate, Z_SYNC_FLUSH );
JMF	12:0071cb144c7a	2103	if( ret != Z_OK )
JMF	12:0071cb144c7a	2104	{
JMF	12:0071cb144c7a	2105	MBEDTLS_SSL_DEBUG_MSG( 1, ( "failed to perform compression (%d)", ret ) );
JMF	12:0071cb144c7a	2106	return( MBEDTLS_ERR_SSL_COMPRESSION_FAILED );
JMF	12:0071cb144c7a	2107	}
JMF	12:0071cb144c7a	2108
JMF	12:0071cb144c7a	2109	ssl->out_msglen = MBEDTLS_SSL_BUFFER_LEN -
JMF	12:0071cb144c7a	2110	ssl->transform_out->ctx_deflate.avail_out;
JMF	12:0071cb144c7a	2111
JMF	12:0071cb144c7a	2112	MBEDTLS_SSL_DEBUG_MSG( 3, ( "after compression: msglen = %d, ",
JMF	12:0071cb144c7a	2113	ssl->out_msglen ) );
JMF	12:0071cb144c7a	2114
JMF	12:0071cb144c7a	2115	MBEDTLS_SSL_DEBUG_BUF( 4, "after compression: output payload",
JMF	12:0071cb144c7a	2116	ssl->out_msg, ssl->out_msglen );
JMF	12:0071cb144c7a	2117
JMF	12:0071cb144c7a	2118	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= compress buf" ) );
JMF	12:0071cb144c7a	2119
JMF	12:0071cb144c7a	2120	return( 0 );
JMF	12:0071cb144c7a	2121	}
JMF	12:0071cb144c7a	2122
JMF	12:0071cb144c7a	2123	static int ssl_decompress_buf( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2124	{
JMF	12:0071cb144c7a	2125	int ret;
JMF	12:0071cb144c7a	2126	unsigned char *msg_post = ssl->in_msg;
JMF	12:0071cb144c7a	2127	size_t len_pre = ssl->in_msglen;
JMF	12:0071cb144c7a	2128	unsigned char *msg_pre = ssl->compress_buf;
JMF	12:0071cb144c7a	2129
JMF	12:0071cb144c7a	2130	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> decompress buf" ) );
JMF	12:0071cb144c7a	2131
JMF	12:0071cb144c7a	2132	if( len_pre == 0 )
JMF	12:0071cb144c7a	2133	return( 0 );
JMF	12:0071cb144c7a	2134
JMF	12:0071cb144c7a	2135	memcpy( msg_pre, ssl->in_msg, len_pre );
JMF	12:0071cb144c7a	2136
JMF	12:0071cb144c7a	2137	MBEDTLS_SSL_DEBUG_MSG( 3, ( "before decompression: msglen = %d, ",
JMF	12:0071cb144c7a	2138	ssl->in_msglen ) );
JMF	12:0071cb144c7a	2139
JMF	12:0071cb144c7a	2140	MBEDTLS_SSL_DEBUG_BUF( 4, "before decompression: input payload",
JMF	12:0071cb144c7a	2141	ssl->in_msg, ssl->in_msglen );
JMF	12:0071cb144c7a	2142
JMF	12:0071cb144c7a	2143	ssl->transform_in->ctx_inflate.next_in = msg_pre;
JMF	12:0071cb144c7a	2144	ssl->transform_in->ctx_inflate.avail_in = len_pre;
JMF	12:0071cb144c7a	2145	ssl->transform_in->ctx_inflate.next_out = msg_post;
JMF	12:0071cb144c7a	2146	ssl->transform_in->ctx_inflate.avail_out = MBEDTLS_SSL_MAX_CONTENT_LEN;
JMF	12:0071cb144c7a	2147
JMF	12:0071cb144c7a	2148	ret = inflate( &ssl->transform_in->ctx_inflate, Z_SYNC_FLUSH );
JMF	12:0071cb144c7a	2149	if( ret != Z_OK )
JMF	12:0071cb144c7a	2150	{
JMF	12:0071cb144c7a	2151	MBEDTLS_SSL_DEBUG_MSG( 1, ( "failed to perform decompression (%d)", ret ) );
JMF	12:0071cb144c7a	2152	return( MBEDTLS_ERR_SSL_COMPRESSION_FAILED );
JMF	12:0071cb144c7a	2153	}
JMF	12:0071cb144c7a	2154
JMF	12:0071cb144c7a	2155	ssl->in_msglen = MBEDTLS_SSL_MAX_CONTENT_LEN -
JMF	12:0071cb144c7a	2156	ssl->transform_in->ctx_inflate.avail_out;
JMF	12:0071cb144c7a	2157
JMF	12:0071cb144c7a	2158	MBEDTLS_SSL_DEBUG_MSG( 3, ( "after decompression: msglen = %d, ",
JMF	12:0071cb144c7a	2159	ssl->in_msglen ) );
JMF	12:0071cb144c7a	2160
JMF	12:0071cb144c7a	2161	MBEDTLS_SSL_DEBUG_BUF( 4, "after decompression: input payload",
JMF	12:0071cb144c7a	2162	ssl->in_msg, ssl->in_msglen );
JMF	12:0071cb144c7a	2163
JMF	12:0071cb144c7a	2164	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= decompress buf" ) );
JMF	12:0071cb144c7a	2165
JMF	12:0071cb144c7a	2166	return( 0 );
JMF	12:0071cb144c7a	2167	}
JMF	12:0071cb144c7a	2168	#endif /* MBEDTLS_ZLIB_SUPPORT */
JMF	12:0071cb144c7a	2169
JMF	12:0071cb144c7a	2170	#if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	2171	static int ssl_write_hello_request( mbedtls_ssl_context *ssl );
JMF	12:0071cb144c7a	2172
JMF	12:0071cb144c7a	2173	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	2174	static int ssl_resend_hello_request( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2175	{
JMF	12:0071cb144c7a	2176	/* If renegotiation is not enforced, retransmit until we would reach max
JMF	12:0071cb144c7a	2177	* timeout if we were using the usual handshake doubling scheme */
JMF	12:0071cb144c7a	2178	if( ssl->conf->renego_max_records < 0 )
JMF	12:0071cb144c7a	2179	{
JMF	12:0071cb144c7a	2180	uint32_t ratio = ssl->conf->hs_timeout_max / ssl->conf->hs_timeout_min + 1;
JMF	12:0071cb144c7a	2181	unsigned char doublings = 1;
JMF	12:0071cb144c7a	2182
JMF	12:0071cb144c7a	2183	while( ratio != 0 )
JMF	12:0071cb144c7a	2184	{
JMF	12:0071cb144c7a	2185	++doublings;
JMF	12:0071cb144c7a	2186	ratio >>= 1;
JMF	12:0071cb144c7a	2187	}
JMF	12:0071cb144c7a	2188
JMF	12:0071cb144c7a	2189	if( ++ssl->renego_records_seen > doublings )
JMF	12:0071cb144c7a	2190	{
JMF	12:0071cb144c7a	2191	MBEDTLS_SSL_DEBUG_MSG( 2, ( "no longer retransmitting hello request" ) );
JMF	12:0071cb144c7a	2192	return( 0 );
JMF	12:0071cb144c7a	2193	}
JMF	12:0071cb144c7a	2194	}
JMF	12:0071cb144c7a	2195
JMF	12:0071cb144c7a	2196	return( ssl_write_hello_request( ssl ) );
JMF	12:0071cb144c7a	2197	}
JMF	12:0071cb144c7a	2198	#endif
JMF	12:0071cb144c7a	2199	#endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_SSL_RENEGOTIATION */
JMF	12:0071cb144c7a	2200
JMF	12:0071cb144c7a	2201	/*
JMF	12:0071cb144c7a	2202	* Fill the input message buffer by appending data to it.
JMF	12:0071cb144c7a	2203	* The amount of data already fetched is in ssl->in_left.
JMF	12:0071cb144c7a	2204	*
JMF	12:0071cb144c7a	2205	* If we return 0, is it guaranteed that (at least) nb_want bytes are
JMF	12:0071cb144c7a	2206	* available (from this read and/or a previous one). Otherwise, an error code
JMF	12:0071cb144c7a	2207	* is returned (possibly EOF or WANT_READ).
JMF	12:0071cb144c7a	2208	*
JMF	12:0071cb144c7a	2209	* With stream transport (TLS) on success ssl->in_left == nb_want, but
JMF	12:0071cb144c7a	2210	* with datagram transport (DTLS) on success ssl->in_left >= nb_want,
JMF	12:0071cb144c7a	2211	* since we always read a whole datagram at once.
JMF	12:0071cb144c7a	2212	*
JMF	12:0071cb144c7a	2213	* For DTLS, it is up to the caller to set ssl->next_record_offset when
JMF	12:0071cb144c7a	2214	* they're done reading a record.
JMF	12:0071cb144c7a	2215	*/
JMF	12:0071cb144c7a	2216	int mbedtls_ssl_fetch_input( mbedtls_ssl_context *ssl, size_t nb_want )
JMF	12:0071cb144c7a	2217	{
JMF	12:0071cb144c7a	2218	int ret;
JMF	12:0071cb144c7a	2219	size_t len;
JMF	12:0071cb144c7a	2220
JMF	12:0071cb144c7a	2221	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> fetch input" ) );
JMF	12:0071cb144c7a	2222
JMF	12:0071cb144c7a	2223	if( ssl->f_recv == NULL && ssl->f_recv_timeout == NULL )
JMF	12:0071cb144c7a	2224	{
JMF	12:0071cb144c7a	2225	MBEDTLS_SSL_DEBUG_MSG( 1, ( "Bad usage of mbedtls_ssl_set_bio() "
JMF	12:0071cb144c7a	2226	"or mbedtls_ssl_set_bio()" ) );
JMF	12:0071cb144c7a	2227	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	2228	}
JMF	12:0071cb144c7a	2229
JMF	12:0071cb144c7a	2230	if( nb_want > MBEDTLS_SSL_BUFFER_LEN - (size_t)( ssl->in_hdr - ssl->in_buf ) )
JMF	12:0071cb144c7a	2231	{
JMF	12:0071cb144c7a	2232	MBEDTLS_SSL_DEBUG_MSG( 1, ( "requesting more data than fits" ) );
JMF	12:0071cb144c7a	2233	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	2234	}
JMF	12:0071cb144c7a	2235
JMF	12:0071cb144c7a	2236	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	2237	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	2238	{
JMF	12:0071cb144c7a	2239	uint32_t timeout;
JMF	12:0071cb144c7a	2240
JMF	12:0071cb144c7a	2241	/* Just to be sure */
JMF	12:0071cb144c7a	2242	if( ssl->f_set_timer == NULL \|\| ssl->f_get_timer == NULL )
JMF	12:0071cb144c7a	2243	{
JMF	12:0071cb144c7a	2244	MBEDTLS_SSL_DEBUG_MSG( 1, ( "You must use "
JMF	12:0071cb144c7a	2245	"mbedtls_ssl_set_timer_cb() for DTLS" ) );
JMF	12:0071cb144c7a	2246	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	2247	}
JMF	12:0071cb144c7a	2248
JMF	12:0071cb144c7a	2249	/*
JMF	12:0071cb144c7a	2250	* The point is, we need to always read a full datagram at once, so we
JMF	12:0071cb144c7a	2251	* sometimes read more then requested, and handle the additional data.
JMF	12:0071cb144c7a	2252	* It could be the rest of the current record (while fetching the
JMF	12:0071cb144c7a	2253	* header) and/or some other records in the same datagram.
JMF	12:0071cb144c7a	2254	*/
JMF	12:0071cb144c7a	2255
JMF	12:0071cb144c7a	2256	/*
JMF	12:0071cb144c7a	2257	* Move to the next record in the already read datagram if applicable
JMF	12:0071cb144c7a	2258	*/
JMF	12:0071cb144c7a	2259	if( ssl->next_record_offset != 0 )
JMF	12:0071cb144c7a	2260	{
JMF	12:0071cb144c7a	2261	if( ssl->in_left < ssl->next_record_offset )
JMF	12:0071cb144c7a	2262	{
JMF	12:0071cb144c7a	2263	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	2264	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	2265	}
JMF	12:0071cb144c7a	2266
JMF	12:0071cb144c7a	2267	ssl->in_left -= ssl->next_record_offset;
JMF	12:0071cb144c7a	2268
JMF	12:0071cb144c7a	2269	if( ssl->in_left != 0 )
JMF	12:0071cb144c7a	2270	{
JMF	12:0071cb144c7a	2271	MBEDTLS_SSL_DEBUG_MSG( 2, ( "next record in same datagram, offset: %d",
JMF	12:0071cb144c7a	2272	ssl->next_record_offset ) );
JMF	12:0071cb144c7a	2273	memmove( ssl->in_hdr,
JMF	12:0071cb144c7a	2274	ssl->in_hdr + ssl->next_record_offset,
JMF	12:0071cb144c7a	2275	ssl->in_left );
JMF	12:0071cb144c7a	2276	}
JMF	12:0071cb144c7a	2277
JMF	12:0071cb144c7a	2278	ssl->next_record_offset = 0;
JMF	12:0071cb144c7a	2279	}
JMF	12:0071cb144c7a	2280
JMF	12:0071cb144c7a	2281	MBEDTLS_SSL_DEBUG_MSG( 2, ( "in_left: %d, nb_want: %d",
JMF	12:0071cb144c7a	2282	ssl->in_left, nb_want ) );
JMF	12:0071cb144c7a	2283
JMF	12:0071cb144c7a	2284	/*
JMF	12:0071cb144c7a	2285	* Done if we already have enough data.
JMF	12:0071cb144c7a	2286	*/
JMF	12:0071cb144c7a	2287	if( nb_want <= ssl->in_left)
JMF	12:0071cb144c7a	2288	{
JMF	12:0071cb144c7a	2289	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= fetch input" ) );
JMF	12:0071cb144c7a	2290	return( 0 );
JMF	12:0071cb144c7a	2291	}
JMF	12:0071cb144c7a	2292
JMF	12:0071cb144c7a	2293	/*
JMF	12:0071cb144c7a	2294	* A record can't be split accross datagrams. If we need to read but
JMF	12:0071cb144c7a	2295	* are not at the beginning of a new record, the caller did something
JMF	12:0071cb144c7a	2296	* wrong.
JMF	12:0071cb144c7a	2297	*/
JMF	12:0071cb144c7a	2298	if( ssl->in_left != 0 )
JMF	12:0071cb144c7a	2299	{
JMF	12:0071cb144c7a	2300	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	2301	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	2302	}
JMF	12:0071cb144c7a	2303
JMF	12:0071cb144c7a	2304	/*
JMF	12:0071cb144c7a	2305	* Don't even try to read if time's out already.
JMF	12:0071cb144c7a	2306	* This avoids by-passing the timer when repeatedly receiving messages
JMF	12:0071cb144c7a	2307	* that will end up being dropped.
JMF	12:0071cb144c7a	2308	*/
JMF	12:0071cb144c7a	2309	if( ssl_check_timer( ssl ) != 0 )
JMF	12:0071cb144c7a	2310	ret = MBEDTLS_ERR_SSL_TIMEOUT;
JMF	12:0071cb144c7a	2311	else
JMF	12:0071cb144c7a	2312	{
JMF	12:0071cb144c7a	2313	len = MBEDTLS_SSL_BUFFER_LEN - ( ssl->in_hdr - ssl->in_buf );
JMF	12:0071cb144c7a	2314
JMF	12:0071cb144c7a	2315	if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	2316	timeout = ssl->handshake->retransmit_timeout;
JMF	12:0071cb144c7a	2317	else
JMF	12:0071cb144c7a	2318	timeout = ssl->conf->read_timeout;
JMF	12:0071cb144c7a	2319
JMF	12:0071cb144c7a	2320	MBEDTLS_SSL_DEBUG_MSG( 3, ( "f_recv_timeout: %u ms", timeout ) );
JMF	12:0071cb144c7a	2321
JMF	12:0071cb144c7a	2322	if( ssl->f_recv_timeout != NULL )
JMF	12:0071cb144c7a	2323	ret = ssl->f_recv_timeout( ssl->p_bio, ssl->in_hdr, len,
JMF	12:0071cb144c7a	2324	timeout );
JMF	12:0071cb144c7a	2325	else
JMF	12:0071cb144c7a	2326	ret = ssl->f_recv( ssl->p_bio, ssl->in_hdr, len );
JMF	12:0071cb144c7a	2327
JMF	12:0071cb144c7a	2328	MBEDTLS_SSL_DEBUG_RET( 2, "ssl->f_recv(_timeout)", ret );
JMF	12:0071cb144c7a	2329
JMF	12:0071cb144c7a	2330	if( ret == 0 )
JMF	12:0071cb144c7a	2331	return( MBEDTLS_ERR_SSL_CONN_EOF );
JMF	12:0071cb144c7a	2332	}
JMF	12:0071cb144c7a	2333
JMF	12:0071cb144c7a	2334	if( ret == MBEDTLS_ERR_SSL_TIMEOUT )
JMF	12:0071cb144c7a	2335	{
JMF	12:0071cb144c7a	2336	MBEDTLS_SSL_DEBUG_MSG( 2, ( "timeout" ) );
JMF	12:0071cb144c7a	2337	ssl_set_timer( ssl, 0 );
JMF	12:0071cb144c7a	2338
JMF	12:0071cb144c7a	2339	if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	2340	{
JMF	12:0071cb144c7a	2341	if( ssl_double_retransmit_timeout( ssl ) != 0 )
JMF	12:0071cb144c7a	2342	{
JMF	12:0071cb144c7a	2343	MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake timeout" ) );
JMF	12:0071cb144c7a	2344	return( MBEDTLS_ERR_SSL_TIMEOUT );
JMF	12:0071cb144c7a	2345	}
JMF	12:0071cb144c7a	2346
JMF	12:0071cb144c7a	2347	if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 )
JMF	12:0071cb144c7a	2348	{
JMF	12:0071cb144c7a	2349	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_resend", ret );
JMF	12:0071cb144c7a	2350	return( ret );
JMF	12:0071cb144c7a	2351	}
JMF	12:0071cb144c7a	2352
JMF	12:0071cb144c7a	2353	return( MBEDTLS_ERR_SSL_WANT_READ );
JMF	12:0071cb144c7a	2354	}
JMF	12:0071cb144c7a	2355	#if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	2356	else if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER &&
JMF	12:0071cb144c7a	2357	ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING )
JMF	12:0071cb144c7a	2358	{
JMF	12:0071cb144c7a	2359	if( ( ret = ssl_resend_hello_request( ssl ) ) != 0 )
JMF	12:0071cb144c7a	2360	{
JMF	12:0071cb144c7a	2361	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_resend_hello_request", ret );
JMF	12:0071cb144c7a	2362	return( ret );
JMF	12:0071cb144c7a	2363	}
JMF	12:0071cb144c7a	2364
JMF	12:0071cb144c7a	2365	return( MBEDTLS_ERR_SSL_WANT_READ );
JMF	12:0071cb144c7a	2366	}
JMF	12:0071cb144c7a	2367	#endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_SSL_RENEGOTIATION */
JMF	12:0071cb144c7a	2368	}
JMF	12:0071cb144c7a	2369
JMF	12:0071cb144c7a	2370	if( ret < 0 )
JMF	12:0071cb144c7a	2371	return( ret );
JMF	12:0071cb144c7a	2372
JMF	12:0071cb144c7a	2373	ssl->in_left = ret;
JMF	12:0071cb144c7a	2374	}
JMF	12:0071cb144c7a	2375	else
JMF	12:0071cb144c7a	2376	#endif
JMF	12:0071cb144c7a	2377	{
JMF	12:0071cb144c7a	2378	MBEDTLS_SSL_DEBUG_MSG( 2, ( "in_left: %d, nb_want: %d",
JMF	12:0071cb144c7a	2379	ssl->in_left, nb_want ) );
JMF	12:0071cb144c7a	2380
JMF	12:0071cb144c7a	2381	while( ssl->in_left < nb_want )
JMF	12:0071cb144c7a	2382	{
JMF	12:0071cb144c7a	2383	len = nb_want - ssl->in_left;
JMF	12:0071cb144c7a	2384
JMF	12:0071cb144c7a	2385	if( ssl_check_timer( ssl ) != 0 )
JMF	12:0071cb144c7a	2386	ret = MBEDTLS_ERR_SSL_TIMEOUT;
JMF	12:0071cb144c7a	2387	else
JMF	12:0071cb144c7a	2388	{
JMF	12:0071cb144c7a	2389	if( ssl->f_recv_timeout != NULL )
JMF	12:0071cb144c7a	2390	{
JMF	12:0071cb144c7a	2391	ret = ssl->f_recv_timeout( ssl->p_bio,
JMF	12:0071cb144c7a	2392	ssl->in_hdr + ssl->in_left, len,
JMF	12:0071cb144c7a	2393	ssl->conf->read_timeout );
JMF	12:0071cb144c7a	2394	}
JMF	12:0071cb144c7a	2395	else
JMF	12:0071cb144c7a	2396	{
JMF	12:0071cb144c7a	2397	ret = ssl->f_recv( ssl->p_bio,
JMF	12:0071cb144c7a	2398	ssl->in_hdr + ssl->in_left, len );
JMF	12:0071cb144c7a	2399	}
JMF	12:0071cb144c7a	2400	}
JMF	12:0071cb144c7a	2401
JMF	12:0071cb144c7a	2402	MBEDTLS_SSL_DEBUG_MSG( 2, ( "in_left: %d, nb_want: %d",
JMF	12:0071cb144c7a	2403	ssl->in_left, nb_want ) );
JMF	12:0071cb144c7a	2404	MBEDTLS_SSL_DEBUG_RET( 2, "ssl->f_recv(_timeout)", ret );
JMF	12:0071cb144c7a	2405
JMF	12:0071cb144c7a	2406	if( ret == 0 )
JMF	12:0071cb144c7a	2407	return( MBEDTLS_ERR_SSL_CONN_EOF );
JMF	12:0071cb144c7a	2408
JMF	12:0071cb144c7a	2409	if( ret < 0 )
JMF	12:0071cb144c7a	2410	return( ret );
JMF	12:0071cb144c7a	2411
JMF	12:0071cb144c7a	2412	ssl->in_left += ret;
JMF	12:0071cb144c7a	2413	}
JMF	12:0071cb144c7a	2414	}
JMF	12:0071cb144c7a	2415
JMF	12:0071cb144c7a	2416	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= fetch input" ) );
JMF	12:0071cb144c7a	2417
JMF	12:0071cb144c7a	2418	return( 0 );
JMF	12:0071cb144c7a	2419	}
JMF	12:0071cb144c7a	2420
JMF	12:0071cb144c7a	2421	/*
JMF	12:0071cb144c7a	2422	* Flush any data not yet written
JMF	12:0071cb144c7a	2423	*/
JMF	12:0071cb144c7a	2424	int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2425	{
JMF	12:0071cb144c7a	2426	int ret;
JMF	12:0071cb144c7a	2427	unsigned char *buf, i;
JMF	12:0071cb144c7a	2428
JMF	12:0071cb144c7a	2429	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> flush output" ) );
JMF	12:0071cb144c7a	2430
JMF	12:0071cb144c7a	2431	if( ssl->f_send == NULL )
JMF	12:0071cb144c7a	2432	{
JMF	12:0071cb144c7a	2433	MBEDTLS_SSL_DEBUG_MSG( 1, ( "Bad usage of mbedtls_ssl_set_bio() "
JMF	12:0071cb144c7a	2434	"or mbedtls_ssl_set_bio()" ) );
JMF	12:0071cb144c7a	2435	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	2436	}
JMF	12:0071cb144c7a	2437
JMF	12:0071cb144c7a	2438	/* Avoid incrementing counter if data is flushed */
JMF	12:0071cb144c7a	2439	if( ssl->out_left == 0 )
JMF	12:0071cb144c7a	2440	{
JMF	12:0071cb144c7a	2441	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= flush output" ) );
JMF	12:0071cb144c7a	2442	return( 0 );
JMF	12:0071cb144c7a	2443	}
JMF	12:0071cb144c7a	2444
JMF	12:0071cb144c7a	2445	while( ssl->out_left > 0 )
JMF	12:0071cb144c7a	2446	{
JMF	12:0071cb144c7a	2447	MBEDTLS_SSL_DEBUG_MSG( 2, ( "message length: %d, out_left: %d",
JMF	12:0071cb144c7a	2448	mbedtls_ssl_hdr_len( ssl ) + ssl->out_msglen, ssl->out_left ) );
JMF	12:0071cb144c7a	2449
JMF	12:0071cb144c7a	2450	buf = ssl->out_hdr + mbedtls_ssl_hdr_len( ssl ) +
JMF	12:0071cb144c7a	2451	ssl->out_msglen - ssl->out_left;
JMF	12:0071cb144c7a	2452	ret = ssl->f_send( ssl->p_bio, buf, ssl->out_left );
JMF	12:0071cb144c7a	2453
JMF	12:0071cb144c7a	2454	MBEDTLS_SSL_DEBUG_RET( 2, "ssl->f_send", ret );
JMF	12:0071cb144c7a	2455
JMF	12:0071cb144c7a	2456	if( ret <= 0 )
JMF	12:0071cb144c7a	2457	return( ret );
JMF	12:0071cb144c7a	2458
JMF	12:0071cb144c7a	2459	ssl->out_left -= ret;
JMF	12:0071cb144c7a	2460	}
JMF	12:0071cb144c7a	2461
JMF	12:0071cb144c7a	2462	for( i = 8; i > ssl_ep_len( ssl ); i-- )
JMF	12:0071cb144c7a	2463	if( ++ssl->out_ctr[i - 1] != 0 )
JMF	12:0071cb144c7a	2464	break;
JMF	12:0071cb144c7a	2465
JMF	12:0071cb144c7a	2466	/* The loop goes to its end iff the counter is wrapping */
JMF	12:0071cb144c7a	2467	if( i == ssl_ep_len( ssl ) )
JMF	12:0071cb144c7a	2468	{
JMF	12:0071cb144c7a	2469	MBEDTLS_SSL_DEBUG_MSG( 1, ( "outgoing message counter would wrap" ) );
JMF	12:0071cb144c7a	2470	return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING );
JMF	12:0071cb144c7a	2471	}
JMF	12:0071cb144c7a	2472
JMF	12:0071cb144c7a	2473	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= flush output" ) );
JMF	12:0071cb144c7a	2474
JMF	12:0071cb144c7a	2475	return( 0 );
JMF	12:0071cb144c7a	2476	}
JMF	12:0071cb144c7a	2477
JMF	12:0071cb144c7a	2478	/*
JMF	12:0071cb144c7a	2479	* Functions to handle the DTLS retransmission state machine
JMF	12:0071cb144c7a	2480	*/
JMF	12:0071cb144c7a	2481	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	2482	/*
JMF	12:0071cb144c7a	2483	* Append current handshake message to current outgoing flight
JMF	12:0071cb144c7a	2484	*/
JMF	12:0071cb144c7a	2485	static int ssl_flight_append( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2486	{
JMF	12:0071cb144c7a	2487	mbedtls_ssl_flight_item *msg;
JMF	12:0071cb144c7a	2488
JMF	12:0071cb144c7a	2489	/* Allocate space for current message */
JMF	12:0071cb144c7a	2490	if( ( msg = mbedtls_calloc( 1, sizeof( mbedtls_ssl_flight_item ) ) ) == NULL )
JMF	12:0071cb144c7a	2491	{
JMF	12:0071cb144c7a	2492	MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc %d bytes failed",
JMF	12:0071cb144c7a	2493	sizeof( mbedtls_ssl_flight_item ) ) );
JMF	12:0071cb144c7a	2494	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	2495	}
JMF	12:0071cb144c7a	2496
JMF	12:0071cb144c7a	2497	if( ( msg->p = mbedtls_calloc( 1, ssl->out_msglen ) ) == NULL )
JMF	12:0071cb144c7a	2498	{
JMF	12:0071cb144c7a	2499	MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc %d bytes failed", ssl->out_msglen ) );
JMF	12:0071cb144c7a	2500	mbedtls_free( msg );
JMF	12:0071cb144c7a	2501	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	2502	}
JMF	12:0071cb144c7a	2503
JMF	12:0071cb144c7a	2504	/* Copy current handshake message with headers */
JMF	12:0071cb144c7a	2505	memcpy( msg->p, ssl->out_msg, ssl->out_msglen );
JMF	12:0071cb144c7a	2506	msg->len = ssl->out_msglen;
JMF	12:0071cb144c7a	2507	msg->type = ssl->out_msgtype;
JMF	12:0071cb144c7a	2508	msg->next = NULL;
JMF	12:0071cb144c7a	2509
JMF	12:0071cb144c7a	2510	/* Append to the current flight */
JMF	12:0071cb144c7a	2511	if( ssl->handshake->flight == NULL )
JMF	12:0071cb144c7a	2512	ssl->handshake->flight = msg;
JMF	12:0071cb144c7a	2513	else
JMF	12:0071cb144c7a	2514	{
JMF	12:0071cb144c7a	2515	mbedtls_ssl_flight_item *cur = ssl->handshake->flight;
JMF	12:0071cb144c7a	2516	while( cur->next != NULL )
JMF	12:0071cb144c7a	2517	cur = cur->next;
JMF	12:0071cb144c7a	2518	cur->next = msg;
JMF	12:0071cb144c7a	2519	}
JMF	12:0071cb144c7a	2520
JMF	12:0071cb144c7a	2521	return( 0 );
JMF	12:0071cb144c7a	2522	}
JMF	12:0071cb144c7a	2523
JMF	12:0071cb144c7a	2524	/*
JMF	12:0071cb144c7a	2525	* Free the current flight of handshake messages
JMF	12:0071cb144c7a	2526	*/
JMF	12:0071cb144c7a	2527	static void ssl_flight_free( mbedtls_ssl_flight_item *flight )
JMF	12:0071cb144c7a	2528	{
JMF	12:0071cb144c7a	2529	mbedtls_ssl_flight_item *cur = flight;
JMF	12:0071cb144c7a	2530	mbedtls_ssl_flight_item *next;
JMF	12:0071cb144c7a	2531
JMF	12:0071cb144c7a	2532	while( cur != NULL )
JMF	12:0071cb144c7a	2533	{
JMF	12:0071cb144c7a	2534	next = cur->next;
JMF	12:0071cb144c7a	2535
JMF	12:0071cb144c7a	2536	mbedtls_free( cur->p );
JMF	12:0071cb144c7a	2537	mbedtls_free( cur );
JMF	12:0071cb144c7a	2538
JMF	12:0071cb144c7a	2539	cur = next;
JMF	12:0071cb144c7a	2540	}
JMF	12:0071cb144c7a	2541	}
JMF	12:0071cb144c7a	2542
JMF	12:0071cb144c7a	2543	#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
JMF	12:0071cb144c7a	2544	static void ssl_dtls_replay_reset( mbedtls_ssl_context *ssl );
JMF	12:0071cb144c7a	2545	#endif
JMF	12:0071cb144c7a	2546
JMF	12:0071cb144c7a	2547	/*
JMF	12:0071cb144c7a	2548	* Swap transform_out and out_ctr with the alternative ones
JMF	12:0071cb144c7a	2549	*/
JMF	12:0071cb144c7a	2550	static void ssl_swap_epochs( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2551	{
JMF	12:0071cb144c7a	2552	mbedtls_ssl_transform *tmp_transform;
JMF	12:0071cb144c7a	2553	unsigned char tmp_out_ctr[8];
JMF	12:0071cb144c7a	2554
JMF	12:0071cb144c7a	2555	if( ssl->transform_out == ssl->handshake->alt_transform_out )
JMF	12:0071cb144c7a	2556	{
JMF	12:0071cb144c7a	2557	MBEDTLS_SSL_DEBUG_MSG( 3, ( "skip swap epochs" ) );
JMF	12:0071cb144c7a	2558	return;
JMF	12:0071cb144c7a	2559	}
JMF	12:0071cb144c7a	2560
JMF	12:0071cb144c7a	2561	MBEDTLS_SSL_DEBUG_MSG( 3, ( "swap epochs" ) );
JMF	12:0071cb144c7a	2562
JMF	12:0071cb144c7a	2563	/* Swap transforms */
JMF	12:0071cb144c7a	2564	tmp_transform = ssl->transform_out;
JMF	12:0071cb144c7a	2565	ssl->transform_out = ssl->handshake->alt_transform_out;
JMF	12:0071cb144c7a	2566	ssl->handshake->alt_transform_out = tmp_transform;
JMF	12:0071cb144c7a	2567
JMF	12:0071cb144c7a	2568	/* Swap epoch + sequence_number */
JMF	12:0071cb144c7a	2569	memcpy( tmp_out_ctr, ssl->out_ctr, 8 );
JMF	12:0071cb144c7a	2570	memcpy( ssl->out_ctr, ssl->handshake->alt_out_ctr, 8 );
JMF	12:0071cb144c7a	2571	memcpy( ssl->handshake->alt_out_ctr, tmp_out_ctr, 8 );
JMF	12:0071cb144c7a	2572
JMF	12:0071cb144c7a	2573	/* Adjust to the newly activated transform */
JMF	12:0071cb144c7a	2574	if( ssl->transform_out != NULL &&
JMF	12:0071cb144c7a	2575	ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 )
JMF	12:0071cb144c7a	2576	{
JMF	12:0071cb144c7a	2577	ssl->out_msg = ssl->out_iv + ssl->transform_out->ivlen -
JMF	12:0071cb144c7a	2578	ssl->transform_out->fixed_ivlen;
JMF	12:0071cb144c7a	2579	}
JMF	12:0071cb144c7a	2580	else
JMF	12:0071cb144c7a	2581	ssl->out_msg = ssl->out_iv;
JMF	12:0071cb144c7a	2582
JMF	12:0071cb144c7a	2583	#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
JMF	12:0071cb144c7a	2584	if( mbedtls_ssl_hw_record_activate != NULL )
JMF	12:0071cb144c7a	2585	{
JMF	12:0071cb144c7a	2586	if( ( ret = mbedtls_ssl_hw_record_activate( ssl, MBEDTLS_SSL_CHANNEL_OUTBOUND ) ) != 0 )
JMF	12:0071cb144c7a	2587	{
JMF	12:0071cb144c7a	2588	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_activate", ret );
JMF	12:0071cb144c7a	2589	return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED );
JMF	12:0071cb144c7a	2590	}
JMF	12:0071cb144c7a	2591	}
JMF	12:0071cb144c7a	2592	#endif
JMF	12:0071cb144c7a	2593	}
JMF	12:0071cb144c7a	2594
JMF	12:0071cb144c7a	2595	/*
JMF	12:0071cb144c7a	2596	* Retransmit the current flight of messages.
JMF	12:0071cb144c7a	2597	*
JMF	12:0071cb144c7a	2598	* Need to remember the current message in case flush_output returns
JMF	12:0071cb144c7a	2599	* WANT_WRITE, causing us to exit this function and come back later.
JMF	12:0071cb144c7a	2600	* This function must be called until state is no longer SENDING.
JMF	12:0071cb144c7a	2601	*/
JMF	12:0071cb144c7a	2602	int mbedtls_ssl_resend( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2603	{
JMF	12:0071cb144c7a	2604	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> mbedtls_ssl_resend" ) );
JMF	12:0071cb144c7a	2605
JMF	12:0071cb144c7a	2606	if( ssl->handshake->retransmit_state != MBEDTLS_SSL_RETRANS_SENDING )
JMF	12:0071cb144c7a	2607	{
JMF	12:0071cb144c7a	2608	MBEDTLS_SSL_DEBUG_MSG( 2, ( "initialise resending" ) );
JMF	12:0071cb144c7a	2609
JMF	12:0071cb144c7a	2610	ssl->handshake->cur_msg = ssl->handshake->flight;
JMF	12:0071cb144c7a	2611	ssl_swap_epochs( ssl );
JMF	12:0071cb144c7a	2612
JMF	12:0071cb144c7a	2613	ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_SENDING;
JMF	12:0071cb144c7a	2614	}
JMF	12:0071cb144c7a	2615
JMF	12:0071cb144c7a	2616	while( ssl->handshake->cur_msg != NULL )
JMF	12:0071cb144c7a	2617	{
JMF	12:0071cb144c7a	2618	int ret;
JMF	12:0071cb144c7a	2619	mbedtls_ssl_flight_item *cur = ssl->handshake->cur_msg;
JMF	12:0071cb144c7a	2620
JMF	12:0071cb144c7a	2621	/* Swap epochs before sending Finished: we can't do it after
JMF	12:0071cb144c7a	2622	* sending ChangeCipherSpec, in case write returns WANT_READ.
JMF	12:0071cb144c7a	2623	* Must be done before copying, may change out_msg pointer */
JMF	12:0071cb144c7a	2624	if( cur->type == MBEDTLS_SSL_MSG_HANDSHAKE &&
JMF	12:0071cb144c7a	2625	cur->p[0] == MBEDTLS_SSL_HS_FINISHED )
JMF	12:0071cb144c7a	2626	{
JMF	12:0071cb144c7a	2627	ssl_swap_epochs( ssl );
JMF	12:0071cb144c7a	2628	}
JMF	12:0071cb144c7a	2629
JMF	12:0071cb144c7a	2630	memcpy( ssl->out_msg, cur->p, cur->len );
JMF	12:0071cb144c7a	2631	ssl->out_msglen = cur->len;
JMF	12:0071cb144c7a	2632	ssl->out_msgtype = cur->type;
JMF	12:0071cb144c7a	2633
JMF	12:0071cb144c7a	2634	ssl->handshake->cur_msg = cur->next;
JMF	12:0071cb144c7a	2635
JMF	12:0071cb144c7a	2636	MBEDTLS_SSL_DEBUG_BUF( 3, "resent handshake message header", ssl->out_msg, 12 );
JMF	12:0071cb144c7a	2637
JMF	12:0071cb144c7a	2638	if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	2639	{
JMF	12:0071cb144c7a	2640	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret );
JMF	12:0071cb144c7a	2641	return( ret );
JMF	12:0071cb144c7a	2642	}
JMF	12:0071cb144c7a	2643	}
JMF	12:0071cb144c7a	2644
JMF	12:0071cb144c7a	2645	if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	2646	ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_FINISHED;
JMF	12:0071cb144c7a	2647	else
JMF	12:0071cb144c7a	2648	{
JMF	12:0071cb144c7a	2649	ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_WAITING;
JMF	12:0071cb144c7a	2650	ssl_set_timer( ssl, ssl->handshake->retransmit_timeout );
JMF	12:0071cb144c7a	2651	}
JMF	12:0071cb144c7a	2652
JMF	12:0071cb144c7a	2653	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= mbedtls_ssl_resend" ) );
JMF	12:0071cb144c7a	2654
JMF	12:0071cb144c7a	2655	return( 0 );
JMF	12:0071cb144c7a	2656	}
JMF	12:0071cb144c7a	2657
JMF	12:0071cb144c7a	2658	/*
JMF	12:0071cb144c7a	2659	* To be called when the last message of an incoming flight is received.
JMF	12:0071cb144c7a	2660	*/
JMF	12:0071cb144c7a	2661	void mbedtls_ssl_recv_flight_completed( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2662	{
JMF	12:0071cb144c7a	2663	/* We won't need to resend that one any more */
JMF	12:0071cb144c7a	2664	ssl_flight_free( ssl->handshake->flight );
JMF	12:0071cb144c7a	2665	ssl->handshake->flight = NULL;
JMF	12:0071cb144c7a	2666	ssl->handshake->cur_msg = NULL;
JMF	12:0071cb144c7a	2667
JMF	12:0071cb144c7a	2668	/* The next incoming flight will start with this msg_seq */
JMF	12:0071cb144c7a	2669	ssl->handshake->in_flight_start_seq = ssl->handshake->in_msg_seq;
JMF	12:0071cb144c7a	2670
JMF	12:0071cb144c7a	2671	/* Cancel timer */
JMF	12:0071cb144c7a	2672	ssl_set_timer( ssl, 0 );
JMF	12:0071cb144c7a	2673
JMF	12:0071cb144c7a	2674	if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE &&
JMF	12:0071cb144c7a	2675	ssl->in_msg[0] == MBEDTLS_SSL_HS_FINISHED )
JMF	12:0071cb144c7a	2676	{
JMF	12:0071cb144c7a	2677	ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_FINISHED;
JMF	12:0071cb144c7a	2678	}
JMF	12:0071cb144c7a	2679	else
JMF	12:0071cb144c7a	2680	ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_PREPARING;
JMF	12:0071cb144c7a	2681	}
JMF	12:0071cb144c7a	2682
JMF	12:0071cb144c7a	2683	/*
JMF	12:0071cb144c7a	2684	* To be called when the last message of an outgoing flight is send.
JMF	12:0071cb144c7a	2685	*/
JMF	12:0071cb144c7a	2686	void mbedtls_ssl_send_flight_completed( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2687	{
JMF	12:0071cb144c7a	2688	ssl_reset_retransmit_timeout( ssl );
JMF	12:0071cb144c7a	2689	ssl_set_timer( ssl, ssl->handshake->retransmit_timeout );
JMF	12:0071cb144c7a	2690
JMF	12:0071cb144c7a	2691	if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE &&
JMF	12:0071cb144c7a	2692	ssl->in_msg[0] == MBEDTLS_SSL_HS_FINISHED )
JMF	12:0071cb144c7a	2693	{
JMF	12:0071cb144c7a	2694	ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_FINISHED;
JMF	12:0071cb144c7a	2695	}
JMF	12:0071cb144c7a	2696	else
JMF	12:0071cb144c7a	2697	ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_WAITING;
JMF	12:0071cb144c7a	2698	}
JMF	12:0071cb144c7a	2699	#endif /* MBEDTLS_SSL_PROTO_DTLS */
JMF	12:0071cb144c7a	2700
JMF	12:0071cb144c7a	2701	/*
JMF	12:0071cb144c7a	2702	* Record layer functions
JMF	12:0071cb144c7a	2703	*/
JMF	12:0071cb144c7a	2704
JMF	12:0071cb144c7a	2705	/*
JMF	12:0071cb144c7a	2706	* Write current record.
JMF	12:0071cb144c7a	2707	* Uses ssl->out_msgtype, ssl->out_msglen and bytes at ssl->out_msg.
JMF	12:0071cb144c7a	2708	*/
JMF	12:0071cb144c7a	2709	int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2710	{
JMF	12:0071cb144c7a	2711	int ret, done = 0, out_msg_type;
JMF	12:0071cb144c7a	2712	size_t len = ssl->out_msglen;
JMF	12:0071cb144c7a	2713
JMF	12:0071cb144c7a	2714	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write record" ) );
JMF	12:0071cb144c7a	2715
JMF	12:0071cb144c7a	2716	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	2717	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
JMF	12:0071cb144c7a	2718	ssl->handshake != NULL &&
JMF	12:0071cb144c7a	2719	ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING )
JMF	12:0071cb144c7a	2720	{
JMF	12:0071cb144c7a	2721	; /* Skip special handshake treatment when resending */
JMF	12:0071cb144c7a	2722	}
JMF	12:0071cb144c7a	2723	else
JMF	12:0071cb144c7a	2724	#endif
JMF	12:0071cb144c7a	2725	if( ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE )
JMF	12:0071cb144c7a	2726	{
JMF	12:0071cb144c7a	2727	out_msg_type = ssl->out_msg[0];
JMF	12:0071cb144c7a	2728
JMF	12:0071cb144c7a	2729	if( out_msg_type != MBEDTLS_SSL_HS_HELLO_REQUEST &&
JMF	12:0071cb144c7a	2730	ssl->handshake == NULL )
JMF	12:0071cb144c7a	2731	{
JMF	12:0071cb144c7a	2732	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	2733	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	2734	}
JMF	12:0071cb144c7a	2735
JMF	12:0071cb144c7a	2736	ssl->out_msg[1] = (unsigned char)( ( len - 4 ) >> 16 );
JMF	12:0071cb144c7a	2737	ssl->out_msg[2] = (unsigned char)( ( len - 4 ) >> 8 );
JMF	12:0071cb144c7a	2738	ssl->out_msg[3] = (unsigned char)( ( len - 4 ) );
JMF	12:0071cb144c7a	2739
JMF	12:0071cb144c7a	2740	/*
JMF	12:0071cb144c7a	2741	* DTLS has additional fields in the Handshake layer,
JMF	12:0071cb144c7a	2742	* between the length field and the actual payload:
JMF	12:0071cb144c7a	2743	* uint16 message_seq;
JMF	12:0071cb144c7a	2744	* uint24 fragment_offset;
JMF	12:0071cb144c7a	2745	* uint24 fragment_length;
JMF	12:0071cb144c7a	2746	*/
JMF	12:0071cb144c7a	2747	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	2748	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	2749	{
JMF	12:0071cb144c7a	2750	/* Make room for the additional DTLS fields */
JMF	12:0071cb144c7a	2751	memmove( ssl->out_msg + 12, ssl->out_msg + 4, len - 4 );
JMF	12:0071cb144c7a	2752	ssl->out_msglen += 8;
JMF	12:0071cb144c7a	2753	len += 8;
JMF	12:0071cb144c7a	2754
JMF	12:0071cb144c7a	2755	/* Write message_seq and update it, except for HelloRequest */
JMF	12:0071cb144c7a	2756	if( out_msg_type != MBEDTLS_SSL_HS_HELLO_REQUEST )
JMF	12:0071cb144c7a	2757	{
JMF	12:0071cb144c7a	2758	ssl->out_msg[4] = ( ssl->handshake->out_msg_seq >> 8 ) & 0xFF;
JMF	12:0071cb144c7a	2759	ssl->out_msg[5] = ( ssl->handshake->out_msg_seq ) & 0xFF;
JMF	12:0071cb144c7a	2760	++( ssl->handshake->out_msg_seq );
JMF	12:0071cb144c7a	2761	}
JMF	12:0071cb144c7a	2762	else
JMF	12:0071cb144c7a	2763	{
JMF	12:0071cb144c7a	2764	ssl->out_msg[4] = 0;
JMF	12:0071cb144c7a	2765	ssl->out_msg[5] = 0;
JMF	12:0071cb144c7a	2766	}
JMF	12:0071cb144c7a	2767
JMF	12:0071cb144c7a	2768	/* We don't fragment, so frag_offset = 0 and frag_len = len */
JMF	12:0071cb144c7a	2769	memset( ssl->out_msg + 6, 0x00, 3 );
JMF	12:0071cb144c7a	2770	memcpy( ssl->out_msg + 9, ssl->out_msg + 1, 3 );
JMF	12:0071cb144c7a	2771	}
JMF	12:0071cb144c7a	2772	#endif /* MBEDTLS_SSL_PROTO_DTLS */
JMF	12:0071cb144c7a	2773
JMF	12:0071cb144c7a	2774	if( out_msg_type != MBEDTLS_SSL_HS_HELLO_REQUEST )
JMF	12:0071cb144c7a	2775	ssl->handshake->update_checksum( ssl, ssl->out_msg, len );
JMF	12:0071cb144c7a	2776	}
JMF	12:0071cb144c7a	2777
JMF	12:0071cb144c7a	2778	/* Save handshake and CCS messages for resending */
JMF	12:0071cb144c7a	2779	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	2780	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
JMF	12:0071cb144c7a	2781	ssl->handshake != NULL &&
JMF	12:0071cb144c7a	2782	ssl->handshake->retransmit_state != MBEDTLS_SSL_RETRANS_SENDING &&
JMF	12:0071cb144c7a	2783	( ssl->out_msgtype == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC \|\|
JMF	12:0071cb144c7a	2784	ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE ) )
JMF	12:0071cb144c7a	2785	{
JMF	12:0071cb144c7a	2786	if( ( ret = ssl_flight_append( ssl ) ) != 0 )
JMF	12:0071cb144c7a	2787	{
JMF	12:0071cb144c7a	2788	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_flight_append", ret );
JMF	12:0071cb144c7a	2789	return( ret );
JMF	12:0071cb144c7a	2790	}
JMF	12:0071cb144c7a	2791	}
JMF	12:0071cb144c7a	2792	#endif
JMF	12:0071cb144c7a	2793
JMF	12:0071cb144c7a	2794	#if defined(MBEDTLS_ZLIB_SUPPORT)
JMF	12:0071cb144c7a	2795	if( ssl->transform_out != NULL &&
JMF	12:0071cb144c7a	2796	ssl->session_out->compression == MBEDTLS_SSL_COMPRESS_DEFLATE )
JMF	12:0071cb144c7a	2797	{
JMF	12:0071cb144c7a	2798	if( ( ret = ssl_compress_buf( ssl ) ) != 0 )
JMF	12:0071cb144c7a	2799	{
JMF	12:0071cb144c7a	2800	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_compress_buf", ret );
JMF	12:0071cb144c7a	2801	return( ret );
JMF	12:0071cb144c7a	2802	}
JMF	12:0071cb144c7a	2803
JMF	12:0071cb144c7a	2804	len = ssl->out_msglen;
JMF	12:0071cb144c7a	2805	}
JMF	12:0071cb144c7a	2806	#endif /MBEDTLS_ZLIB_SUPPORT /
JMF	12:0071cb144c7a	2807
JMF	12:0071cb144c7a	2808	#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
JMF	12:0071cb144c7a	2809	if( mbedtls_ssl_hw_record_write != NULL )
JMF	12:0071cb144c7a	2810	{
JMF	12:0071cb144c7a	2811	MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_write()" ) );
JMF	12:0071cb144c7a	2812
JMF	12:0071cb144c7a	2813	ret = mbedtls_ssl_hw_record_write( ssl );
JMF	12:0071cb144c7a	2814	if( ret != 0 && ret != MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH )
JMF	12:0071cb144c7a	2815	{
JMF	12:0071cb144c7a	2816	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_write", ret );
JMF	12:0071cb144c7a	2817	return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED );
JMF	12:0071cb144c7a	2818	}
JMF	12:0071cb144c7a	2819
JMF	12:0071cb144c7a	2820	if( ret == 0 )
JMF	12:0071cb144c7a	2821	done = 1;
JMF	12:0071cb144c7a	2822	}
JMF	12:0071cb144c7a	2823	#endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */
JMF	12:0071cb144c7a	2824	if( !done )
JMF	12:0071cb144c7a	2825	{
JMF	12:0071cb144c7a	2826	ssl->out_hdr[0] = (unsigned char) ssl->out_msgtype;
JMF	12:0071cb144c7a	2827	mbedtls_ssl_write_version( ssl->major_ver, ssl->minor_ver,
JMF	12:0071cb144c7a	2828	ssl->conf->transport, ssl->out_hdr + 1 );
JMF	12:0071cb144c7a	2829
JMF	12:0071cb144c7a	2830	ssl->out_len[0] = (unsigned char)( len >> 8 );
JMF	12:0071cb144c7a	2831	ssl->out_len[1] = (unsigned char)( len );
JMF	12:0071cb144c7a	2832
JMF	12:0071cb144c7a	2833	if( ssl->transform_out != NULL )
JMF	12:0071cb144c7a	2834	{
JMF	12:0071cb144c7a	2835	if( ( ret = ssl_encrypt_buf( ssl ) ) != 0 )
JMF	12:0071cb144c7a	2836	{
JMF	12:0071cb144c7a	2837	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_encrypt_buf", ret );
JMF	12:0071cb144c7a	2838	return( ret );
JMF	12:0071cb144c7a	2839	}
JMF	12:0071cb144c7a	2840
JMF	12:0071cb144c7a	2841	len = ssl->out_msglen;
JMF	12:0071cb144c7a	2842	ssl->out_len[0] = (unsigned char)( len >> 8 );
JMF	12:0071cb144c7a	2843	ssl->out_len[1] = (unsigned char)( len );
JMF	12:0071cb144c7a	2844	}
JMF	12:0071cb144c7a	2845
JMF	12:0071cb144c7a	2846	ssl->out_left = mbedtls_ssl_hdr_len( ssl ) + ssl->out_msglen;
JMF	12:0071cb144c7a	2847
JMF	12:0071cb144c7a	2848	MBEDTLS_SSL_DEBUG_MSG( 3, ( "output record: msgtype = %d, "
JMF	12:0071cb144c7a	2849	"version = [%d:%d], msglen = %d",
JMF	12:0071cb144c7a	2850	ssl->out_hdr[0], ssl->out_hdr[1], ssl->out_hdr[2],
JMF	12:0071cb144c7a	2851	( ssl->out_len[0] << 8 ) \| ssl->out_len[1] ) );
JMF	12:0071cb144c7a	2852
JMF	12:0071cb144c7a	2853	MBEDTLS_SSL_DEBUG_BUF( 4, "output record sent to network",
JMF	12:0071cb144c7a	2854	ssl->out_hdr, mbedtls_ssl_hdr_len( ssl ) + ssl->out_msglen );
JMF	12:0071cb144c7a	2855	}
JMF	12:0071cb144c7a	2856
JMF	12:0071cb144c7a	2857	if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 )
JMF	12:0071cb144c7a	2858	{
JMF	12:0071cb144c7a	2859	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flush_output", ret );
JMF	12:0071cb144c7a	2860	return( ret );
JMF	12:0071cb144c7a	2861	}
JMF	12:0071cb144c7a	2862
JMF	12:0071cb144c7a	2863	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write record" ) );
JMF	12:0071cb144c7a	2864
JMF	12:0071cb144c7a	2865	return( 0 );
JMF	12:0071cb144c7a	2866	}
JMF	12:0071cb144c7a	2867
JMF	12:0071cb144c7a	2868	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	2869	/*
JMF	12:0071cb144c7a	2870	* Mark bits in bitmask (used for DTLS HS reassembly)
JMF	12:0071cb144c7a	2871	*/
JMF	12:0071cb144c7a	2872	static void ssl_bitmask_set( unsigned char *mask, size_t offset, size_t len )
JMF	12:0071cb144c7a	2873	{
JMF	12:0071cb144c7a	2874	unsigned int start_bits, end_bits;
JMF	12:0071cb144c7a	2875
JMF	12:0071cb144c7a	2876	start_bits = 8 - ( offset % 8 );
JMF	12:0071cb144c7a	2877	if( start_bits != 8 )
JMF	12:0071cb144c7a	2878	{
JMF	12:0071cb144c7a	2879	size_t first_byte_idx = offset / 8;
JMF	12:0071cb144c7a	2880
JMF	12:0071cb144c7a	2881	/* Special case */
JMF	12:0071cb144c7a	2882	if( len <= start_bits )
JMF	12:0071cb144c7a	2883	{
JMF	12:0071cb144c7a	2884	for( ; len != 0; len-- )
JMF	12:0071cb144c7a	2885	mask[first_byte_idx] \|= 1 << ( start_bits - len );
JMF	12:0071cb144c7a	2886
JMF	12:0071cb144c7a	2887	/* Avoid potential issues with offset or len becoming invalid */
JMF	12:0071cb144c7a	2888	return;
JMF	12:0071cb144c7a	2889	}
JMF	12:0071cb144c7a	2890
JMF	12:0071cb144c7a	2891	offset += start_bits; /* Now offset % 8 == 0 */
JMF	12:0071cb144c7a	2892	len -= start_bits;
JMF	12:0071cb144c7a	2893
JMF	12:0071cb144c7a	2894	for( ; start_bits != 0; start_bits-- )
JMF	12:0071cb144c7a	2895	mask[first_byte_idx] \|= 1 << ( start_bits - 1 );
JMF	12:0071cb144c7a	2896	}
JMF	12:0071cb144c7a	2897
JMF	12:0071cb144c7a	2898	end_bits = len % 8;
JMF	12:0071cb144c7a	2899	if( end_bits != 0 )
JMF	12:0071cb144c7a	2900	{
JMF	12:0071cb144c7a	2901	size_t last_byte_idx = ( offset + len ) / 8;
JMF	12:0071cb144c7a	2902
JMF	12:0071cb144c7a	2903	len -= end_bits; /* Now len % 8 == 0 */
JMF	12:0071cb144c7a	2904
JMF	12:0071cb144c7a	2905	for( ; end_bits != 0; end_bits-- )
JMF	12:0071cb144c7a	2906	mask[last_byte_idx] \|= 1 << ( 8 - end_bits );
JMF	12:0071cb144c7a	2907	}
JMF	12:0071cb144c7a	2908
JMF	12:0071cb144c7a	2909	memset( mask + offset / 8, 0xFF, len / 8 );
JMF	12:0071cb144c7a	2910	}
JMF	12:0071cb144c7a	2911
JMF	12:0071cb144c7a	2912	/*
JMF	12:0071cb144c7a	2913	* Check that bitmask is full
JMF	12:0071cb144c7a	2914	*/
JMF	12:0071cb144c7a	2915	static int ssl_bitmask_check( unsigned char *mask, size_t len )
JMF	12:0071cb144c7a	2916	{
JMF	12:0071cb144c7a	2917	size_t i;
JMF	12:0071cb144c7a	2918
JMF	12:0071cb144c7a	2919	for( i = 0; i < len / 8; i++ )
JMF	12:0071cb144c7a	2920	if( mask[i] != 0xFF )
JMF	12:0071cb144c7a	2921	return( -1 );
JMF	12:0071cb144c7a	2922
JMF	12:0071cb144c7a	2923	for( i = 0; i < len % 8; i++ )
JMF	12:0071cb144c7a	2924	if( ( mask[len / 8] & ( 1 << ( 7 - i ) ) ) == 0 )
JMF	12:0071cb144c7a	2925	return( -1 );
JMF	12:0071cb144c7a	2926
JMF	12:0071cb144c7a	2927	return( 0 );
JMF	12:0071cb144c7a	2928	}
JMF	12:0071cb144c7a	2929
JMF	12:0071cb144c7a	2930	/*
JMF	12:0071cb144c7a	2931	* Reassemble fragmented DTLS handshake messages.
JMF	12:0071cb144c7a	2932	*
JMF	12:0071cb144c7a	2933	* Use a temporary buffer for reassembly, divided in two parts:
JMF	12:0071cb144c7a	2934	* - the first holds the reassembled message (including handshake header),
JMF	12:0071cb144c7a	2935	* - the second holds a bitmask indicating which parts of the message
JMF	12:0071cb144c7a	2936	* (excluding headers) have been received so far.
JMF	12:0071cb144c7a	2937	*/
JMF	12:0071cb144c7a	2938	static int ssl_reassemble_dtls_handshake( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	2939	{
JMF	12:0071cb144c7a	2940	unsigned char msg, bitmask;
JMF	12:0071cb144c7a	2941	size_t frag_len, frag_off;
JMF	12:0071cb144c7a	2942	size_t msg_len = ssl->in_hslen - 12; /* Without headers */
JMF	12:0071cb144c7a	2943
JMF	12:0071cb144c7a	2944	if( ssl->handshake == NULL )
JMF	12:0071cb144c7a	2945	{
JMF	12:0071cb144c7a	2946	MBEDTLS_SSL_DEBUG_MSG( 1, ( "not supported outside handshake (for now)" ) );
JMF	12:0071cb144c7a	2947	return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
JMF	12:0071cb144c7a	2948	}
JMF	12:0071cb144c7a	2949
JMF	12:0071cb144c7a	2950	/*
JMF	12:0071cb144c7a	2951	* For first fragment, check size and allocate buffer
JMF	12:0071cb144c7a	2952	*/
JMF	12:0071cb144c7a	2953	if( ssl->handshake->hs_msg == NULL )
JMF	12:0071cb144c7a	2954	{
JMF	12:0071cb144c7a	2955	size_t alloc_len;
JMF	12:0071cb144c7a	2956
JMF	12:0071cb144c7a	2957	MBEDTLS_SSL_DEBUG_MSG( 2, ( "initialize reassembly, total length = %d",
JMF	12:0071cb144c7a	2958	msg_len ) );
JMF	12:0071cb144c7a	2959
JMF	12:0071cb144c7a	2960	if( ssl->in_hslen > MBEDTLS_SSL_MAX_CONTENT_LEN )
JMF	12:0071cb144c7a	2961	{
JMF	12:0071cb144c7a	2962	MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake message too large" ) );
JMF	12:0071cb144c7a	2963	return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
JMF	12:0071cb144c7a	2964	}
JMF	12:0071cb144c7a	2965
JMF	12:0071cb144c7a	2966	/* The bitmask needs one bit per byte of message excluding header */
JMF	12:0071cb144c7a	2967	alloc_len = 12 + msg_len + msg_len / 8 + ( msg_len % 8 != 0 );
JMF	12:0071cb144c7a	2968
JMF	12:0071cb144c7a	2969	ssl->handshake->hs_msg = mbedtls_calloc( 1, alloc_len );
JMF	12:0071cb144c7a	2970	if( ssl->handshake->hs_msg == NULL )
JMF	12:0071cb144c7a	2971	{
JMF	12:0071cb144c7a	2972	MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc failed (%d bytes)", alloc_len ) );
JMF	12:0071cb144c7a	2973	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	2974	}
JMF	12:0071cb144c7a	2975
JMF	12:0071cb144c7a	2976	/* Prepare final header: copy msg_type, length and message_seq,
JMF	12:0071cb144c7a	2977	* then add standardised fragment_offset and fragment_length */
JMF	12:0071cb144c7a	2978	memcpy( ssl->handshake->hs_msg, ssl->in_msg, 6 );
JMF	12:0071cb144c7a	2979	memset( ssl->handshake->hs_msg + 6, 0, 3 );
JMF	12:0071cb144c7a	2980	memcpy( ssl->handshake->hs_msg + 9,
JMF	12:0071cb144c7a	2981	ssl->handshake->hs_msg + 1, 3 );
JMF	12:0071cb144c7a	2982	}
JMF	12:0071cb144c7a	2983	else
JMF	12:0071cb144c7a	2984	{
JMF	12:0071cb144c7a	2985	/* Make sure msg_type and length are consistent */
JMF	12:0071cb144c7a	2986	if( memcmp( ssl->handshake->hs_msg, ssl->in_msg, 4 ) != 0 )
JMF	12:0071cb144c7a	2987	{
JMF	12:0071cb144c7a	2988	MBEDTLS_SSL_DEBUG_MSG( 1, ( "fragment header mismatch" ) );
JMF	12:0071cb144c7a	2989	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	2990	}
JMF	12:0071cb144c7a	2991	}
JMF	12:0071cb144c7a	2992
JMF	12:0071cb144c7a	2993	msg = ssl->handshake->hs_msg + 12;
JMF	12:0071cb144c7a	2994	bitmask = msg + msg_len;
JMF	12:0071cb144c7a	2995
JMF	12:0071cb144c7a	2996	/*
JMF	12:0071cb144c7a	2997	* Check and copy current fragment
JMF	12:0071cb144c7a	2998	*/
JMF	12:0071cb144c7a	2999	frag_off = ( ssl->in_msg[6] << 16 ) \|
JMF	12:0071cb144c7a	3000	( ssl->in_msg[7] << 8 ) \|
JMF	12:0071cb144c7a	3001	ssl->in_msg[8];
JMF	12:0071cb144c7a	3002	frag_len = ( ssl->in_msg[9] << 16 ) \|
JMF	12:0071cb144c7a	3003	( ssl->in_msg[10] << 8 ) \|
JMF	12:0071cb144c7a	3004	ssl->in_msg[11];
JMF	12:0071cb144c7a	3005
JMF	12:0071cb144c7a	3006	if( frag_off + frag_len > msg_len )
JMF	12:0071cb144c7a	3007	{
JMF	12:0071cb144c7a	3008	MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid fragment offset/len: %d + %d > %d",
JMF	12:0071cb144c7a	3009	frag_off, frag_len, msg_len ) );
JMF	12:0071cb144c7a	3010	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3011	}
JMF	12:0071cb144c7a	3012
JMF	12:0071cb144c7a	3013	if( frag_len + 12 > ssl->in_msglen )
JMF	12:0071cb144c7a	3014	{
JMF	12:0071cb144c7a	3015	MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid fragment length: %d + 12 > %d",
JMF	12:0071cb144c7a	3016	frag_len, ssl->in_msglen ) );
JMF	12:0071cb144c7a	3017	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3018	}
JMF	12:0071cb144c7a	3019
JMF	12:0071cb144c7a	3020	MBEDTLS_SSL_DEBUG_MSG( 2, ( "adding fragment, offset = %d, length = %d",
JMF	12:0071cb144c7a	3021	frag_off, frag_len ) );
JMF	12:0071cb144c7a	3022
JMF	12:0071cb144c7a	3023	memcpy( msg + frag_off, ssl->in_msg + 12, frag_len );
JMF	12:0071cb144c7a	3024	ssl_bitmask_set( bitmask, frag_off, frag_len );
JMF	12:0071cb144c7a	3025
JMF	12:0071cb144c7a	3026	/*
JMF	12:0071cb144c7a	3027	* Do we have the complete message by now?
JMF	12:0071cb144c7a	3028	* If yes, finalize it, else ask to read the next record.
JMF	12:0071cb144c7a	3029	*/
JMF	12:0071cb144c7a	3030	if( ssl_bitmask_check( bitmask, msg_len ) != 0 )
JMF	12:0071cb144c7a	3031	{
JMF	12:0071cb144c7a	3032	MBEDTLS_SSL_DEBUG_MSG( 2, ( "message is not complete yet" ) );
JMF	12:0071cb144c7a	3033	return( MBEDTLS_ERR_SSL_WANT_READ );
JMF	12:0071cb144c7a	3034	}
JMF	12:0071cb144c7a	3035
JMF	12:0071cb144c7a	3036	MBEDTLS_SSL_DEBUG_MSG( 2, ( "handshake message completed" ) );
JMF	12:0071cb144c7a	3037
JMF	12:0071cb144c7a	3038	if( frag_len + 12 < ssl->in_msglen )
JMF	12:0071cb144c7a	3039	{
JMF	12:0071cb144c7a	3040	/*
JMF	12:0071cb144c7a	3041	* We'got more handshake messages in the same record.
JMF	12:0071cb144c7a	3042	* This case is not handled now because no know implementation does
JMF	12:0071cb144c7a	3043	* that and it's hard to test, so we prefer to fail cleanly for now.
JMF	12:0071cb144c7a	3044	*/
JMF	12:0071cb144c7a	3045	MBEDTLS_SSL_DEBUG_MSG( 1, ( "last fragment not alone in its record" ) );
JMF	12:0071cb144c7a	3046	return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
JMF	12:0071cb144c7a	3047	}
JMF	12:0071cb144c7a	3048
JMF	12:0071cb144c7a	3049	if( ssl->in_left > ssl->next_record_offset )
JMF	12:0071cb144c7a	3050	{
JMF	12:0071cb144c7a	3051	/*
JMF	12:0071cb144c7a	3052	* We've got more data in the buffer after the current record,
JMF	12:0071cb144c7a	3053	* that we don't want to overwrite. Move it before writing the
JMF	12:0071cb144c7a	3054	* reassembled message, and adjust in_left and next_record_offset.
JMF	12:0071cb144c7a	3055	*/
JMF	12:0071cb144c7a	3056	unsigned char *cur_remain = ssl->in_hdr + ssl->next_record_offset;
JMF	12:0071cb144c7a	3057	unsigned char *new_remain = ssl->in_msg + ssl->in_hslen;
JMF	12:0071cb144c7a	3058	size_t remain_len = ssl->in_left - ssl->next_record_offset;
JMF	12:0071cb144c7a	3059
JMF	12:0071cb144c7a	3060	/* First compute and check new lengths */
JMF	12:0071cb144c7a	3061	ssl->next_record_offset = new_remain - ssl->in_hdr;
JMF	12:0071cb144c7a	3062	ssl->in_left = ssl->next_record_offset + remain_len;
JMF	12:0071cb144c7a	3063
JMF	12:0071cb144c7a	3064	if( ssl->in_left > MBEDTLS_SSL_BUFFER_LEN -
JMF	12:0071cb144c7a	3065	(size_t)( ssl->in_hdr - ssl->in_buf ) )
JMF	12:0071cb144c7a	3066	{
JMF	12:0071cb144c7a	3067	MBEDTLS_SSL_DEBUG_MSG( 1, ( "reassembled message too large for buffer" ) );
JMF	12:0071cb144c7a	3068	return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
JMF	12:0071cb144c7a	3069	}
JMF	12:0071cb144c7a	3070
JMF	12:0071cb144c7a	3071	memmove( new_remain, cur_remain, remain_len );
JMF	12:0071cb144c7a	3072	}
JMF	12:0071cb144c7a	3073
JMF	12:0071cb144c7a	3074	memcpy( ssl->in_msg, ssl->handshake->hs_msg, ssl->in_hslen );
JMF	12:0071cb144c7a	3075
JMF	12:0071cb144c7a	3076	mbedtls_free( ssl->handshake->hs_msg );
JMF	12:0071cb144c7a	3077	ssl->handshake->hs_msg = NULL;
JMF	12:0071cb144c7a	3078
JMF	12:0071cb144c7a	3079	MBEDTLS_SSL_DEBUG_BUF( 3, "reassembled handshake message",
JMF	12:0071cb144c7a	3080	ssl->in_msg, ssl->in_hslen );
JMF	12:0071cb144c7a	3081
JMF	12:0071cb144c7a	3082	return( 0 );
JMF	12:0071cb144c7a	3083	}
JMF	12:0071cb144c7a	3084	#endif /* MBEDTLS_SSL_PROTO_DTLS */
JMF	12:0071cb144c7a	3085
JMF	12:0071cb144c7a	3086	static int ssl_prepare_handshake_record( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	3087	{
JMF	12:0071cb144c7a	3088	if( ssl->in_msglen < mbedtls_ssl_hs_hdr_len( ssl ) )
JMF	12:0071cb144c7a	3089	{
JMF	12:0071cb144c7a	3090	MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake message too short: %d",
JMF	12:0071cb144c7a	3091	ssl->in_msglen ) );
JMF	12:0071cb144c7a	3092	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3093	}
JMF	12:0071cb144c7a	3094
JMF	12:0071cb144c7a	3095	ssl->in_hslen = mbedtls_ssl_hs_hdr_len( ssl ) + (
JMF	12:0071cb144c7a	3096	( ssl->in_msg[1] << 16 ) \|
JMF	12:0071cb144c7a	3097	( ssl->in_msg[2] << 8 ) \|
JMF	12:0071cb144c7a	3098	ssl->in_msg[3] );
JMF	12:0071cb144c7a	3099
JMF	12:0071cb144c7a	3100	MBEDTLS_SSL_DEBUG_MSG( 3, ( "handshake message: msglen ="
JMF	12:0071cb144c7a	3101	" %d, type = %d, hslen = %d",
JMF	12:0071cb144c7a	3102	ssl->in_msglen, ssl->in_msg[0], ssl->in_hslen ) );
JMF	12:0071cb144c7a	3103
JMF	12:0071cb144c7a	3104	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	3105	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	3106	{
JMF	12:0071cb144c7a	3107	int ret;
JMF	12:0071cb144c7a	3108	unsigned int recv_msg_seq = ( ssl->in_msg[4] << 8 ) \| ssl->in_msg[5];
JMF	12:0071cb144c7a	3109
JMF	12:0071cb144c7a	3110	/* ssl->handshake is NULL when receiving ClientHello for renego */
JMF	12:0071cb144c7a	3111	if( ssl->handshake != NULL &&
JMF	12:0071cb144c7a	3112	recv_msg_seq != ssl->handshake->in_msg_seq )
JMF	12:0071cb144c7a	3113	{
JMF	12:0071cb144c7a	3114	/* Retransmit only on last message from previous flight, to avoid
JMF	12:0071cb144c7a	3115	* too many retransmissions.
JMF	12:0071cb144c7a	3116	* Besides, No sane server ever retransmits HelloVerifyRequest */
JMF	12:0071cb144c7a	3117	if( recv_msg_seq == ssl->handshake->in_flight_start_seq - 1 &&
JMF	12:0071cb144c7a	3118	ssl->in_msg[0] != MBEDTLS_SSL_HS_HELLO_VERIFY_REQUEST )
JMF	12:0071cb144c7a	3119	{
JMF	12:0071cb144c7a	3120	MBEDTLS_SSL_DEBUG_MSG( 2, ( "received message from last flight, "
JMF	12:0071cb144c7a	3121	"message_seq = %d, start_of_flight = %d",
JMF	12:0071cb144c7a	3122	recv_msg_seq,
JMF	12:0071cb144c7a	3123	ssl->handshake->in_flight_start_seq ) );
JMF	12:0071cb144c7a	3124
JMF	12:0071cb144c7a	3125	if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 )
JMF	12:0071cb144c7a	3126	{
JMF	12:0071cb144c7a	3127	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_resend", ret );
JMF	12:0071cb144c7a	3128	return( ret );
JMF	12:0071cb144c7a	3129	}
JMF	12:0071cb144c7a	3130	}
JMF	12:0071cb144c7a	3131	else
JMF	12:0071cb144c7a	3132	{
JMF	12:0071cb144c7a	3133	MBEDTLS_SSL_DEBUG_MSG( 2, ( "dropping out-of-sequence message: "
JMF	12:0071cb144c7a	3134	"message_seq = %d, expected = %d",
JMF	12:0071cb144c7a	3135	recv_msg_seq,
JMF	12:0071cb144c7a	3136	ssl->handshake->in_msg_seq ) );
JMF	12:0071cb144c7a	3137	}
JMF	12:0071cb144c7a	3138
JMF	12:0071cb144c7a	3139	return( MBEDTLS_ERR_SSL_WANT_READ );
JMF	12:0071cb144c7a	3140	}
JMF	12:0071cb144c7a	3141	/* Wait until message completion to increment in_msg_seq */
JMF	12:0071cb144c7a	3142
JMF	12:0071cb144c7a	3143	/* Reassemble if current message is fragmented or reassembly is
JMF	12:0071cb144c7a	3144	* already in progress */
JMF	12:0071cb144c7a	3145	if( ssl->in_msglen < ssl->in_hslen \|\|
JMF	12:0071cb144c7a	3146	memcmp( ssl->in_msg + 6, "\0\0\0", 3 ) != 0 \|\|
JMF	12:0071cb144c7a	3147	memcmp( ssl->in_msg + 9, ssl->in_msg + 1, 3 ) != 0 \|\|
JMF	12:0071cb144c7a	3148	( ssl->handshake != NULL && ssl->handshake->hs_msg != NULL ) )
JMF	12:0071cb144c7a	3149	{
JMF	12:0071cb144c7a	3150	MBEDTLS_SSL_DEBUG_MSG( 2, ( "found fragmented DTLS handshake message" ) );
JMF	12:0071cb144c7a	3151
JMF	12:0071cb144c7a	3152	if( ( ret = ssl_reassemble_dtls_handshake( ssl ) ) != 0 )
JMF	12:0071cb144c7a	3153	{
JMF	12:0071cb144c7a	3154	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_reassemble_dtls_handshake", ret );
JMF	12:0071cb144c7a	3155	return( ret );
JMF	12:0071cb144c7a	3156	}
JMF	12:0071cb144c7a	3157	}
JMF	12:0071cb144c7a	3158	}
JMF	12:0071cb144c7a	3159	else
JMF	12:0071cb144c7a	3160	#endif /* MBEDTLS_SSL_PROTO_DTLS */
JMF	12:0071cb144c7a	3161	/* With TLS we don't handle fragmentation (for now) */
JMF	12:0071cb144c7a	3162	if( ssl->in_msglen < ssl->in_hslen )
JMF	12:0071cb144c7a	3163	{
JMF	12:0071cb144c7a	3164	MBEDTLS_SSL_DEBUG_MSG( 1, ( "TLS handshake fragmentation not supported" ) );
JMF	12:0071cb144c7a	3165	return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
JMF	12:0071cb144c7a	3166	}
JMF	12:0071cb144c7a	3167
JMF	12:0071cb144c7a	3168	if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER &&
JMF	12:0071cb144c7a	3169	ssl->handshake != NULL )
JMF	12:0071cb144c7a	3170	{
JMF	12:0071cb144c7a	3171	ssl->handshake->update_checksum( ssl, ssl->in_msg, ssl->in_hslen );
JMF	12:0071cb144c7a	3172	}
JMF	12:0071cb144c7a	3173
JMF	12:0071cb144c7a	3174	/* Handshake message is complete, increment counter */
JMF	12:0071cb144c7a	3175	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	3176	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
JMF	12:0071cb144c7a	3177	ssl->handshake != NULL )
JMF	12:0071cb144c7a	3178	{
JMF	12:0071cb144c7a	3179	ssl->handshake->in_msg_seq++;
JMF	12:0071cb144c7a	3180	}
JMF	12:0071cb144c7a	3181	#endif
JMF	12:0071cb144c7a	3182
JMF	12:0071cb144c7a	3183	return( 0 );
JMF	12:0071cb144c7a	3184	}
JMF	12:0071cb144c7a	3185
JMF	12:0071cb144c7a	3186	/*
JMF	12:0071cb144c7a	3187	* DTLS anti-replay: RFC 6347 4.1.2.6
JMF	12:0071cb144c7a	3188	*
JMF	12:0071cb144c7a	3189	* in_window is a field of bits numbered from 0 (lsb) to 63 (msb).
JMF	12:0071cb144c7a	3190	* Bit n is set iff record number in_window_top - n has been seen.
JMF	12:0071cb144c7a	3191	*
JMF	12:0071cb144c7a	3192	* Usually, in_window_top is the last record number seen and the lsb of
JMF	12:0071cb144c7a	3193	* in_window is set. The only exception is the initial state (record number 0
JMF	12:0071cb144c7a	3194	* not seen yet).
JMF	12:0071cb144c7a	3195	*/
JMF	12:0071cb144c7a	3196	#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
JMF	12:0071cb144c7a	3197	static void ssl_dtls_replay_reset( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	3198	{
JMF	12:0071cb144c7a	3199	ssl->in_window_top = 0;
JMF	12:0071cb144c7a	3200	ssl->in_window = 0;
JMF	12:0071cb144c7a	3201	}
JMF	12:0071cb144c7a	3202
JMF	12:0071cb144c7a	3203	static inline uint64_t ssl_load_six_bytes( unsigned char *buf )
JMF	12:0071cb144c7a	3204	{
JMF	12:0071cb144c7a	3205	return( ( (uint64_t) buf[0] << 40 ) \|
JMF	12:0071cb144c7a	3206	( (uint64_t) buf[1] << 32 ) \|
JMF	12:0071cb144c7a	3207	( (uint64_t) buf[2] << 24 ) \|
JMF	12:0071cb144c7a	3208	( (uint64_t) buf[3] << 16 ) \|
JMF	12:0071cb144c7a	3209	( (uint64_t) buf[4] << 8 ) \|
JMF	12:0071cb144c7a	3210	( (uint64_t) buf[5] ) );
JMF	12:0071cb144c7a	3211	}
JMF	12:0071cb144c7a	3212
JMF	12:0071cb144c7a	3213	/*
JMF	12:0071cb144c7a	3214	* Return 0 if sequence number is acceptable, -1 otherwise
JMF	12:0071cb144c7a	3215	*/
JMF	12:0071cb144c7a	3216	int mbedtls_ssl_dtls_replay_check( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	3217	{
JMF	12:0071cb144c7a	3218	uint64_t rec_seqnum = ssl_load_six_bytes( ssl->in_ctr + 2 );
JMF	12:0071cb144c7a	3219	uint64_t bit;
JMF	12:0071cb144c7a	3220
JMF	12:0071cb144c7a	3221	if( ssl->conf->anti_replay == MBEDTLS_SSL_ANTI_REPLAY_DISABLED )
JMF	12:0071cb144c7a	3222	return( 0 );
JMF	12:0071cb144c7a	3223
JMF	12:0071cb144c7a	3224	if( rec_seqnum > ssl->in_window_top )
JMF	12:0071cb144c7a	3225	return( 0 );
JMF	12:0071cb144c7a	3226
JMF	12:0071cb144c7a	3227	bit = ssl->in_window_top - rec_seqnum;
JMF	12:0071cb144c7a	3228
JMF	12:0071cb144c7a	3229	if( bit >= 64 )
JMF	12:0071cb144c7a	3230	return( -1 );
JMF	12:0071cb144c7a	3231
JMF	12:0071cb144c7a	3232	if( ( ssl->in_window & ( (uint64_t) 1 << bit ) ) != 0 )
JMF	12:0071cb144c7a	3233	return( -1 );
JMF	12:0071cb144c7a	3234
JMF	12:0071cb144c7a	3235	return( 0 );
JMF	12:0071cb144c7a	3236	}
JMF	12:0071cb144c7a	3237
JMF	12:0071cb144c7a	3238	/*
JMF	12:0071cb144c7a	3239	* Update replay window on new validated record
JMF	12:0071cb144c7a	3240	*/
JMF	12:0071cb144c7a	3241	void mbedtls_ssl_dtls_replay_update( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	3242	{
JMF	12:0071cb144c7a	3243	uint64_t rec_seqnum = ssl_load_six_bytes( ssl->in_ctr + 2 );
JMF	12:0071cb144c7a	3244
JMF	12:0071cb144c7a	3245	if( ssl->conf->anti_replay == MBEDTLS_SSL_ANTI_REPLAY_DISABLED )
JMF	12:0071cb144c7a	3246	return;
JMF	12:0071cb144c7a	3247
JMF	12:0071cb144c7a	3248	if( rec_seqnum > ssl->in_window_top )
JMF	12:0071cb144c7a	3249	{
JMF	12:0071cb144c7a	3250	/* Update window_top and the contents of the window */
JMF	12:0071cb144c7a	3251	uint64_t shift = rec_seqnum - ssl->in_window_top;
JMF	12:0071cb144c7a	3252
JMF	12:0071cb144c7a	3253	if( shift >= 64 )
JMF	12:0071cb144c7a	3254	ssl->in_window = 1;
JMF	12:0071cb144c7a	3255	else
JMF	12:0071cb144c7a	3256	{
JMF	12:0071cb144c7a	3257	ssl->in_window <<= shift;
JMF	12:0071cb144c7a	3258	ssl->in_window \|= 1;
JMF	12:0071cb144c7a	3259	}
JMF	12:0071cb144c7a	3260
JMF	12:0071cb144c7a	3261	ssl->in_window_top = rec_seqnum;
JMF	12:0071cb144c7a	3262	}
JMF	12:0071cb144c7a	3263	else
JMF	12:0071cb144c7a	3264	{
JMF	12:0071cb144c7a	3265	/* Mark that number as seen in the current window */
JMF	12:0071cb144c7a	3266	uint64_t bit = ssl->in_window_top - rec_seqnum;
JMF	12:0071cb144c7a	3267
JMF	12:0071cb144c7a	3268	if( bit < 64 ) /* Always true, but be extra sure */
JMF	12:0071cb144c7a	3269	ssl->in_window \|= (uint64_t) 1 << bit;
JMF	12:0071cb144c7a	3270	}
JMF	12:0071cb144c7a	3271	}
JMF	12:0071cb144c7a	3272	#endif /* MBEDTLS_SSL_DTLS_ANTI_REPLAY */
JMF	12:0071cb144c7a	3273
JMF	12:0071cb144c7a	3274	#if defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	3275	/* Forward declaration */
JMF	12:0071cb144c7a	3276	static int ssl_session_reset_int( mbedtls_ssl_context *ssl, int partial );
JMF	12:0071cb144c7a	3277
JMF	12:0071cb144c7a	3278	/*
JMF	12:0071cb144c7a	3279	* Without any SSL context, check if a datagram looks like a ClientHello with
JMF	12:0071cb144c7a	3280	* a valid cookie, and if it doesn't, generate a HelloVerifyRequest message.
JMF	12:0071cb144c7a	3281	* Both input and output include full DTLS headers.
JMF	12:0071cb144c7a	3282	*
JMF	12:0071cb144c7a	3283	* - if cookie is valid, return 0
JMF	12:0071cb144c7a	3284	* - if ClientHello looks superficially valid but cookie is not,
JMF	12:0071cb144c7a	3285	* fill obuf and set olen, then
JMF	12:0071cb144c7a	3286	* return MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED
JMF	12:0071cb144c7a	3287	* - otherwise return a specific error code
JMF	12:0071cb144c7a	3288	*/
JMF	12:0071cb144c7a	3289	static int ssl_check_dtls_clihlo_cookie(
JMF	12:0071cb144c7a	3290	mbedtls_ssl_cookie_write_t *f_cookie_write,
JMF	12:0071cb144c7a	3291	mbedtls_ssl_cookie_check_t *f_cookie_check,
JMF	12:0071cb144c7a	3292	void *p_cookie,
JMF	12:0071cb144c7a	3293	const unsigned char *cli_id, size_t cli_id_len,
JMF	12:0071cb144c7a	3294	const unsigned char *in, size_t in_len,
JMF	12:0071cb144c7a	3295	unsigned char obuf, size_t buf_len, size_t olen )
JMF	12:0071cb144c7a	3296	{
JMF	12:0071cb144c7a	3297	size_t sid_len, cookie_len;
JMF	12:0071cb144c7a	3298	unsigned char *p;
JMF	12:0071cb144c7a	3299
JMF	12:0071cb144c7a	3300	if( f_cookie_write == NULL \|\| f_cookie_check == NULL )
JMF	12:0071cb144c7a	3301	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	3302
JMF	12:0071cb144c7a	3303	/*
JMF	12:0071cb144c7a	3304	* Structure of ClientHello with record and handshake headers,
JMF	12:0071cb144c7a	3305	* and expected values. We don't need to check a lot, more checks will be
JMF	12:0071cb144c7a	3306	* done when actually parsing the ClientHello - skipping those checks
JMF	12:0071cb144c7a	3307	* avoids code duplication and does not make cookie forging any easier.
JMF	12:0071cb144c7a	3308	*
JMF	12:0071cb144c7a	3309	* 0-0 ContentType type; copied, must be handshake
JMF	12:0071cb144c7a	3310	* 1-2 ProtocolVersion version; copied
JMF	12:0071cb144c7a	3311	* 3-4 uint16 epoch; copied, must be 0
JMF	12:0071cb144c7a	3312	* 5-10 uint48 sequence_number; copied
JMF	12:0071cb144c7a	3313	* 11-12 uint16 length; (ignored)
JMF	12:0071cb144c7a	3314	*
JMF	12:0071cb144c7a	3315	* 13-13 HandshakeType msg_type; (ignored)
JMF	12:0071cb144c7a	3316	* 14-16 uint24 length; (ignored)
JMF	12:0071cb144c7a	3317	* 17-18 uint16 message_seq; copied
JMF	12:0071cb144c7a	3318	* 19-21 uint24 fragment_offset; copied, must be 0
JMF	12:0071cb144c7a	3319	* 22-24 uint24 fragment_length; (ignored)
JMF	12:0071cb144c7a	3320	*
JMF	12:0071cb144c7a	3321	* 25-26 ProtocolVersion client_version; (ignored)
JMF	12:0071cb144c7a	3322	* 27-58 Random random; (ignored)
JMF	12:0071cb144c7a	3323	* 59-xx SessionID session_id; 1 byte len + sid_len content
JMF	12:0071cb144c7a	3324	* 60+ opaque cookie<0..2^8-1>; 1 byte len + content
JMF	12:0071cb144c7a	3325	* ...
JMF	12:0071cb144c7a	3326	*
JMF	12:0071cb144c7a	3327	* Minimum length is 61 bytes.
JMF	12:0071cb144c7a	3328	*/
JMF	12:0071cb144c7a	3329	if( in_len < 61 \|\|
JMF	12:0071cb144c7a	3330	in[0] != MBEDTLS_SSL_MSG_HANDSHAKE \|\|
JMF	12:0071cb144c7a	3331	in[3] != 0 \|\| in[4] != 0 \|\|
JMF	12:0071cb144c7a	3332	in[19] != 0 \|\| in[20] != 0 \|\| in[21] != 0 )
JMF	12:0071cb144c7a	3333	{
JMF	12:0071cb144c7a	3334	return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
JMF	12:0071cb144c7a	3335	}
JMF	12:0071cb144c7a	3336
JMF	12:0071cb144c7a	3337	sid_len = in[59];
JMF	12:0071cb144c7a	3338	if( sid_len > in_len - 61 )
JMF	12:0071cb144c7a	3339	return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
JMF	12:0071cb144c7a	3340
JMF	12:0071cb144c7a	3341	cookie_len = in[60 + sid_len];
JMF	12:0071cb144c7a	3342	if( cookie_len > in_len - 60 )
JMF	12:0071cb144c7a	3343	return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
JMF	12:0071cb144c7a	3344
JMF	12:0071cb144c7a	3345	if( f_cookie_check( p_cookie, in + sid_len + 61, cookie_len,
JMF	12:0071cb144c7a	3346	cli_id, cli_id_len ) == 0 )
JMF	12:0071cb144c7a	3347	{
JMF	12:0071cb144c7a	3348	/* Valid cookie */
JMF	12:0071cb144c7a	3349	return( 0 );
JMF	12:0071cb144c7a	3350	}
JMF	12:0071cb144c7a	3351
JMF	12:0071cb144c7a	3352	/*
JMF	12:0071cb144c7a	3353	* If we get here, we've got an invalid cookie, let's prepare HVR.
JMF	12:0071cb144c7a	3354	*
JMF	12:0071cb144c7a	3355	* 0-0 ContentType type; copied
JMF	12:0071cb144c7a	3356	* 1-2 ProtocolVersion version; copied
JMF	12:0071cb144c7a	3357	* 3-4 uint16 epoch; copied
JMF	12:0071cb144c7a	3358	* 5-10 uint48 sequence_number; copied
JMF	12:0071cb144c7a	3359	* 11-12 uint16 length; olen - 13
JMF	12:0071cb144c7a	3360	*
JMF	12:0071cb144c7a	3361	* 13-13 HandshakeType msg_type; hello_verify_request
JMF	12:0071cb144c7a	3362	* 14-16 uint24 length; olen - 25
JMF	12:0071cb144c7a	3363	* 17-18 uint16 message_seq; copied
JMF	12:0071cb144c7a	3364	* 19-21 uint24 fragment_offset; copied
JMF	12:0071cb144c7a	3365	* 22-24 uint24 fragment_length; olen - 25
JMF	12:0071cb144c7a	3366	*
JMF	12:0071cb144c7a	3367	* 25-26 ProtocolVersion server_version; 0xfe 0xff
JMF	12:0071cb144c7a	3368	* 27-27 opaque cookie<0..2^8-1>; cookie_len = olen - 27, cookie
JMF	12:0071cb144c7a	3369	*
JMF	12:0071cb144c7a	3370	* Minimum length is 28.
JMF	12:0071cb144c7a	3371	*/
JMF	12:0071cb144c7a	3372	if( buf_len < 28 )
JMF	12:0071cb144c7a	3373	return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
JMF	12:0071cb144c7a	3374
JMF	12:0071cb144c7a	3375	/* Copy most fields and adapt others */
JMF	12:0071cb144c7a	3376	memcpy( obuf, in, 25 );
JMF	12:0071cb144c7a	3377	obuf[13] = MBEDTLS_SSL_HS_HELLO_VERIFY_REQUEST;
JMF	12:0071cb144c7a	3378	obuf[25] = 0xfe;
JMF	12:0071cb144c7a	3379	obuf[26] = 0xff;
JMF	12:0071cb144c7a	3380
JMF	12:0071cb144c7a	3381	/* Generate and write actual cookie */
JMF	12:0071cb144c7a	3382	p = obuf + 28;
JMF	12:0071cb144c7a	3383	if( f_cookie_write( p_cookie,
JMF	12:0071cb144c7a	3384	&p, obuf + buf_len, cli_id, cli_id_len ) != 0 )
JMF	12:0071cb144c7a	3385	{
JMF	12:0071cb144c7a	3386	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	3387	}
JMF	12:0071cb144c7a	3388
JMF	12:0071cb144c7a	3389	*olen = p - obuf;
JMF	12:0071cb144c7a	3390
JMF	12:0071cb144c7a	3391	/* Go back and fill length fields */
JMF	12:0071cb144c7a	3392	obuf[27] = (unsigned char)( *olen - 28 );
JMF	12:0071cb144c7a	3393
JMF	12:0071cb144c7a	3394	obuf[14] = obuf[22] = (unsigned char)( ( *olen - 25 ) >> 16 );
JMF	12:0071cb144c7a	3395	obuf[15] = obuf[23] = (unsigned char)( ( *olen - 25 ) >> 8 );
JMF	12:0071cb144c7a	3396	obuf[16] = obuf[24] = (unsigned char)( ( *olen - 25 ) );
JMF	12:0071cb144c7a	3397
JMF	12:0071cb144c7a	3398	obuf[11] = (unsigned char)( ( *olen - 13 ) >> 8 );
JMF	12:0071cb144c7a	3399	obuf[12] = (unsigned char)( ( *olen - 13 ) );
JMF	12:0071cb144c7a	3400
JMF	12:0071cb144c7a	3401	return( MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED );
JMF	12:0071cb144c7a	3402	}
JMF	12:0071cb144c7a	3403
JMF	12:0071cb144c7a	3404	/*
JMF	12:0071cb144c7a	3405	* Handle possible client reconnect with the same UDP quadruplet
JMF	12:0071cb144c7a	3406	* (RFC 6347 Section 4.2.8).
JMF	12:0071cb144c7a	3407	*
JMF	12:0071cb144c7a	3408	* Called by ssl_parse_record_header() in case we receive an epoch 0 record
JMF	12:0071cb144c7a	3409	* that looks like a ClientHello.
JMF	12:0071cb144c7a	3410	*
JMF	12:0071cb144c7a	3411	* - if the input looks like a ClientHello without cookies,
JMF	12:0071cb144c7a	3412	* send back HelloVerifyRequest, then
JMF	12:0071cb144c7a	3413	* return MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED
JMF	12:0071cb144c7a	3414	* - if the input looks like a ClientHello with a valid cookie,
JMF	12:0071cb144c7a	3415	* reset the session of the current context, and
JMF	12:0071cb144c7a	3416	* return MBEDTLS_ERR_SSL_CLIENT_RECONNECT
JMF	12:0071cb144c7a	3417	* - if anything goes wrong, return a specific error code
JMF	12:0071cb144c7a	3418	*
JMF	12:0071cb144c7a	3419	* mbedtls_ssl_read_record() will ignore the record if anything else than
JMF	12:0071cb144c7a	3420	* MBEDTLS_ERR_SSL_CLIENT_RECONNECT or 0 is returned, although this function
JMF	12:0071cb144c7a	3421	* cannot not return 0.
JMF	12:0071cb144c7a	3422	*/
JMF	12:0071cb144c7a	3423	static int ssl_handle_possible_reconnect( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	3424	{
JMF	12:0071cb144c7a	3425	int ret;
JMF	12:0071cb144c7a	3426	size_t len;
JMF	12:0071cb144c7a	3427
JMF	12:0071cb144c7a	3428	ret = ssl_check_dtls_clihlo_cookie(
JMF	12:0071cb144c7a	3429	ssl->conf->f_cookie_write,
JMF	12:0071cb144c7a	3430	ssl->conf->f_cookie_check,
JMF	12:0071cb144c7a	3431	ssl->conf->p_cookie,
JMF	12:0071cb144c7a	3432	ssl->cli_id, ssl->cli_id_len,
JMF	12:0071cb144c7a	3433	ssl->in_buf, ssl->in_left,
JMF	12:0071cb144c7a	3434	ssl->out_buf, MBEDTLS_SSL_MAX_CONTENT_LEN, &len );
JMF	12:0071cb144c7a	3435
JMF	12:0071cb144c7a	3436	MBEDTLS_SSL_DEBUG_RET( 2, "ssl_check_dtls_clihlo_cookie", ret );
JMF	12:0071cb144c7a	3437
JMF	12:0071cb144c7a	3438	if( ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED )
JMF	12:0071cb144c7a	3439	{
JMF	12:0071cb144c7a	3440	/* Dont check write errors as we can't do anything here.
JMF	12:0071cb144c7a	3441	* If the error is permanent we'll catch it later,
JMF	12:0071cb144c7a	3442	* if it's not, then hopefully it'll work next time. */
JMF	12:0071cb144c7a	3443	(void) ssl->f_send( ssl->p_bio, ssl->out_buf, len );
JMF	12:0071cb144c7a	3444
JMF	12:0071cb144c7a	3445	return( MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED );
JMF	12:0071cb144c7a	3446	}
JMF	12:0071cb144c7a	3447
JMF	12:0071cb144c7a	3448	if( ret == 0 )
JMF	12:0071cb144c7a	3449	{
JMF	12:0071cb144c7a	3450	/* Got a valid cookie, partially reset context */
JMF	12:0071cb144c7a	3451	if( ( ret = ssl_session_reset_int( ssl, 1 ) ) != 0 )
JMF	12:0071cb144c7a	3452	{
JMF	12:0071cb144c7a	3453	MBEDTLS_SSL_DEBUG_RET( 1, "reset", ret );
JMF	12:0071cb144c7a	3454	return( ret );
JMF	12:0071cb144c7a	3455	}
JMF	12:0071cb144c7a	3456
JMF	12:0071cb144c7a	3457	return( MBEDTLS_ERR_SSL_CLIENT_RECONNECT );
JMF	12:0071cb144c7a	3458	}
JMF	12:0071cb144c7a	3459
JMF	12:0071cb144c7a	3460	return( ret );
JMF	12:0071cb144c7a	3461	}
JMF	12:0071cb144c7a	3462	#endif /* MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE && MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	3463
JMF	12:0071cb144c7a	3464	/*
JMF	12:0071cb144c7a	3465	* ContentType type;
JMF	12:0071cb144c7a	3466	* ProtocolVersion version;
JMF	12:0071cb144c7a	3467	* uint16 epoch; // DTLS only
JMF	12:0071cb144c7a	3468	* uint48 sequence_number; // DTLS only
JMF	12:0071cb144c7a	3469	* uint16 length;
JMF	12:0071cb144c7a	3470	*
JMF	12:0071cb144c7a	3471	* Return 0 if header looks sane (and, for DTLS, the record is expected)
JMF	12:0071cb144c7a	3472	* MBEDTLS_ERR_SSL_INVALID_RECORD if the header looks bad,
JMF	12:0071cb144c7a	3473	* MBEDTLS_ERR_SSL_UNEXPECTED_RECORD (DTLS only) if sane but unexpected.
JMF	12:0071cb144c7a	3474	*
JMF	12:0071cb144c7a	3475	* With DTLS, mbedtls_ssl_read_record() will:
JMF	12:0071cb144c7a	3476	* 1. proceed with the record if this function returns 0
JMF	12:0071cb144c7a	3477	* 2. drop only the current record if this function returns UNEXPECTED_RECORD
JMF	12:0071cb144c7a	3478	* 3. return CLIENT_RECONNECT if this function return that value
JMF	12:0071cb144c7a	3479	* 4. drop the whole datagram if this function returns anything else.
JMF	12:0071cb144c7a	3480	* Point 2 is needed when the peer is resending, and we have already received
JMF	12:0071cb144c7a	3481	* the first record from a datagram but are still waiting for the others.
JMF	12:0071cb144c7a	3482	*/
JMF	12:0071cb144c7a	3483	static int ssl_parse_record_header( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	3484	{
JMF	12:0071cb144c7a	3485	int ret;
JMF	12:0071cb144c7a	3486	int major_ver, minor_ver;
JMF	12:0071cb144c7a	3487
JMF	12:0071cb144c7a	3488	MBEDTLS_SSL_DEBUG_BUF( 4, "input record header", ssl->in_hdr, mbedtls_ssl_hdr_len( ssl ) );
JMF	12:0071cb144c7a	3489
JMF	12:0071cb144c7a	3490	ssl->in_msgtype = ssl->in_hdr[0];
JMF	12:0071cb144c7a	3491	ssl->in_msglen = ( ssl->in_len[0] << 8 ) \| ssl->in_len[1];
JMF	12:0071cb144c7a	3492	mbedtls_ssl_read_version( &major_ver, &minor_ver, ssl->conf->transport, ssl->in_hdr + 1 );
JMF	12:0071cb144c7a	3493
JMF	12:0071cb144c7a	3494	MBEDTLS_SSL_DEBUG_MSG( 3, ( "input record: msgtype = %d, "
JMF	12:0071cb144c7a	3495	"version = [%d:%d], msglen = %d",
JMF	12:0071cb144c7a	3496	ssl->in_msgtype,
JMF	12:0071cb144c7a	3497	major_ver, minor_ver, ssl->in_msglen ) );
JMF	12:0071cb144c7a	3498
JMF	12:0071cb144c7a	3499	/* Check record type */
JMF	12:0071cb144c7a	3500	if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE &&
JMF	12:0071cb144c7a	3501	ssl->in_msgtype != MBEDTLS_SSL_MSG_ALERT &&
JMF	12:0071cb144c7a	3502	ssl->in_msgtype != MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC &&
JMF	12:0071cb144c7a	3503	ssl->in_msgtype != MBEDTLS_SSL_MSG_APPLICATION_DATA )
JMF	12:0071cb144c7a	3504	{
JMF	12:0071cb144c7a	3505	MBEDTLS_SSL_DEBUG_MSG( 1, ( "unknown record type" ) );
JMF	12:0071cb144c7a	3506
JMF	12:0071cb144c7a	3507	if( ( ret = mbedtls_ssl_send_alert_message( ssl,
JMF	12:0071cb144c7a	3508	MBEDTLS_SSL_ALERT_LEVEL_FATAL,
JMF	12:0071cb144c7a	3509	MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE ) ) != 0 )
JMF	12:0071cb144c7a	3510	{
JMF	12:0071cb144c7a	3511	return( ret );
JMF	12:0071cb144c7a	3512	}
JMF	12:0071cb144c7a	3513
JMF	12:0071cb144c7a	3514	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3515	}
JMF	12:0071cb144c7a	3516
JMF	12:0071cb144c7a	3517	/* Check version */
JMF	12:0071cb144c7a	3518	if( major_ver != ssl->major_ver )
JMF	12:0071cb144c7a	3519	{
JMF	12:0071cb144c7a	3520	MBEDTLS_SSL_DEBUG_MSG( 1, ( "major version mismatch" ) );
JMF	12:0071cb144c7a	3521	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3522	}
JMF	12:0071cb144c7a	3523
JMF	12:0071cb144c7a	3524	if( minor_ver > ssl->conf->max_minor_ver )
JMF	12:0071cb144c7a	3525	{
JMF	12:0071cb144c7a	3526	MBEDTLS_SSL_DEBUG_MSG( 1, ( "minor version mismatch" ) );
JMF	12:0071cb144c7a	3527	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3528	}
JMF	12:0071cb144c7a	3529
JMF	12:0071cb144c7a	3530	/* Check length against the size of our buffer */
JMF	12:0071cb144c7a	3531	if( ssl->in_msglen > MBEDTLS_SSL_BUFFER_LEN
JMF	12:0071cb144c7a	3532	- (size_t)( ssl->in_msg - ssl->in_buf ) )
JMF	12:0071cb144c7a	3533	{
JMF	12:0071cb144c7a	3534	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
JMF	12:0071cb144c7a	3535	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3536	}
JMF	12:0071cb144c7a	3537
JMF	12:0071cb144c7a	3538	/* Check length against bounds of the current transform and version */
JMF	12:0071cb144c7a	3539	if( ssl->transform_in == NULL )
JMF	12:0071cb144c7a	3540	{
JMF	12:0071cb144c7a	3541	if( ssl->in_msglen < 1 \|\|
JMF	12:0071cb144c7a	3542	ssl->in_msglen > MBEDTLS_SSL_MAX_CONTENT_LEN )
JMF	12:0071cb144c7a	3543	{
JMF	12:0071cb144c7a	3544	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
JMF	12:0071cb144c7a	3545	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3546	}
JMF	12:0071cb144c7a	3547	}
JMF	12:0071cb144c7a	3548	else
JMF	12:0071cb144c7a	3549	{
JMF	12:0071cb144c7a	3550	if( ssl->in_msglen < ssl->transform_in->minlen )
JMF	12:0071cb144c7a	3551	{
JMF	12:0071cb144c7a	3552	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
JMF	12:0071cb144c7a	3553	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3554	}
JMF	12:0071cb144c7a	3555
JMF	12:0071cb144c7a	3556	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	3557	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 &&
JMF	12:0071cb144c7a	3558	ssl->in_msglen > ssl->transform_in->minlen + MBEDTLS_SSL_MAX_CONTENT_LEN )
JMF	12:0071cb144c7a	3559	{
JMF	12:0071cb144c7a	3560	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
JMF	12:0071cb144c7a	3561	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3562	}
JMF	12:0071cb144c7a	3563	#endif
JMF	12:0071cb144c7a	3564	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| \
JMF	12:0071cb144c7a	3565	defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	3566	/*
JMF	12:0071cb144c7a	3567	* TLS encrypted messages can have up to 256 bytes of padding
JMF	12:0071cb144c7a	3568	*/
JMF	12:0071cb144c7a	3569	if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_1 &&
JMF	12:0071cb144c7a	3570	ssl->in_msglen > ssl->transform_in->minlen +
JMF	12:0071cb144c7a	3571	MBEDTLS_SSL_MAX_CONTENT_LEN + 256 )
JMF	12:0071cb144c7a	3572	{
JMF	12:0071cb144c7a	3573	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
JMF	12:0071cb144c7a	3574	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3575	}
JMF	12:0071cb144c7a	3576	#endif
JMF	12:0071cb144c7a	3577	}
JMF	12:0071cb144c7a	3578
JMF	12:0071cb144c7a	3579	/*
JMF	12:0071cb144c7a	3580	* DTLS-related tests done last, because most of them may result in
JMF	12:0071cb144c7a	3581	* silently dropping the record (but not the whole datagram), and we only
JMF	12:0071cb144c7a	3582	* want to consider that after ensuring that the "basic" fields (type,
JMF	12:0071cb144c7a	3583	* version, length) are sane.
JMF	12:0071cb144c7a	3584	*/
JMF	12:0071cb144c7a	3585	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	3586	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	3587	{
JMF	12:0071cb144c7a	3588	unsigned int rec_epoch = ( ssl->in_ctr[0] << 8 ) \| ssl->in_ctr[1];
JMF	12:0071cb144c7a	3589
JMF	12:0071cb144c7a	3590	/* Drop unexpected ChangeCipherSpec messages */
JMF	12:0071cb144c7a	3591	if( ssl->in_msgtype == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC &&
JMF	12:0071cb144c7a	3592	ssl->state != MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC &&
JMF	12:0071cb144c7a	3593	ssl->state != MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC )
JMF	12:0071cb144c7a	3594	{
JMF	12:0071cb144c7a	3595	MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping unexpected ChangeCipherSpec" ) );
JMF	12:0071cb144c7a	3596	return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
JMF	12:0071cb144c7a	3597	}
JMF	12:0071cb144c7a	3598
JMF	12:0071cb144c7a	3599	/* Drop unexpected ApplicationData records,
JMF	12:0071cb144c7a	3600	* except at the beginning of renegotiations */
JMF	12:0071cb144c7a	3601	if( ssl->in_msgtype == MBEDTLS_SSL_MSG_APPLICATION_DATA &&
JMF	12:0071cb144c7a	3602	ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER
JMF	12:0071cb144c7a	3603	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	3604	&& ! ( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS &&
JMF	12:0071cb144c7a	3605	ssl->state == MBEDTLS_SSL_SERVER_HELLO )
JMF	12:0071cb144c7a	3606	#endif
JMF	12:0071cb144c7a	3607	)
JMF	12:0071cb144c7a	3608	{
JMF	12:0071cb144c7a	3609	MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping unexpected ApplicationData" ) );
JMF	12:0071cb144c7a	3610	return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
JMF	12:0071cb144c7a	3611	}
JMF	12:0071cb144c7a	3612
JMF	12:0071cb144c7a	3613	/* Check epoch (and sequence number) with DTLS */
JMF	12:0071cb144c7a	3614	if( rec_epoch != ssl->in_epoch )
JMF	12:0071cb144c7a	3615	{
JMF	12:0071cb144c7a	3616	MBEDTLS_SSL_DEBUG_MSG( 1, ( "record from another epoch: "
JMF	12:0071cb144c7a	3617	"expected %d, received %d",
JMF	12:0071cb144c7a	3618	ssl->in_epoch, rec_epoch ) );
JMF	12:0071cb144c7a	3619
JMF	12:0071cb144c7a	3620	#if defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	3621	/*
JMF	12:0071cb144c7a	3622	* Check for an epoch 0 ClientHello. We can't use in_msg here to
JMF	12:0071cb144c7a	3623	* access the first byte of record content (handshake type), as we
JMF	12:0071cb144c7a	3624	* have an active transform (possibly iv_len != 0), so use the
JMF	12:0071cb144c7a	3625	* fact that the record header len is 13 instead.
JMF	12:0071cb144c7a	3626	*/
JMF	12:0071cb144c7a	3627	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER &&
JMF	12:0071cb144c7a	3628	ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER &&
JMF	12:0071cb144c7a	3629	rec_epoch == 0 &&
JMF	12:0071cb144c7a	3630	ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE &&
JMF	12:0071cb144c7a	3631	ssl->in_left > 13 &&
JMF	12:0071cb144c7a	3632	ssl->in_buf[13] == MBEDTLS_SSL_HS_CLIENT_HELLO )
JMF	12:0071cb144c7a	3633	{
JMF	12:0071cb144c7a	3634	MBEDTLS_SSL_DEBUG_MSG( 1, ( "possible client reconnect "
JMF	12:0071cb144c7a	3635	"from the same port" ) );
JMF	12:0071cb144c7a	3636	return( ssl_handle_possible_reconnect( ssl ) );
JMF	12:0071cb144c7a	3637	}
JMF	12:0071cb144c7a	3638	else
JMF	12:0071cb144c7a	3639	#endif /* MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE && MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	3640	return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
JMF	12:0071cb144c7a	3641	}
JMF	12:0071cb144c7a	3642
JMF	12:0071cb144c7a	3643	#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
JMF	12:0071cb144c7a	3644	/* Replay detection only works for the current epoch */
JMF	12:0071cb144c7a	3645	if( rec_epoch == ssl->in_epoch &&
JMF	12:0071cb144c7a	3646	mbedtls_ssl_dtls_replay_check( ssl ) != 0 )
JMF	12:0071cb144c7a	3647	{
JMF	12:0071cb144c7a	3648	MBEDTLS_SSL_DEBUG_MSG( 1, ( "replayed record" ) );
JMF	12:0071cb144c7a	3649	return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
JMF	12:0071cb144c7a	3650	}
JMF	12:0071cb144c7a	3651	#endif
JMF	12:0071cb144c7a	3652	}
JMF	12:0071cb144c7a	3653	#endif /* MBEDTLS_SSL_PROTO_DTLS */
JMF	12:0071cb144c7a	3654
JMF	12:0071cb144c7a	3655	return( 0 );
JMF	12:0071cb144c7a	3656	}
JMF	12:0071cb144c7a	3657
JMF	12:0071cb144c7a	3658	/*
JMF	12:0071cb144c7a	3659	* If applicable, decrypt (and decompress) record content
JMF	12:0071cb144c7a	3660	*/
JMF	12:0071cb144c7a	3661	static int ssl_prepare_record_content( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	3662	{
JMF	12:0071cb144c7a	3663	int ret, done = 0;
JMF	12:0071cb144c7a	3664
JMF	12:0071cb144c7a	3665	MBEDTLS_SSL_DEBUG_BUF( 4, "input record from network",
JMF	12:0071cb144c7a	3666	ssl->in_hdr, mbedtls_ssl_hdr_len( ssl ) + ssl->in_msglen );
JMF	12:0071cb144c7a	3667
JMF	12:0071cb144c7a	3668	#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
JMF	12:0071cb144c7a	3669	if( mbedtls_ssl_hw_record_read != NULL )
JMF	12:0071cb144c7a	3670	{
JMF	12:0071cb144c7a	3671	MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_read()" ) );
JMF	12:0071cb144c7a	3672
JMF	12:0071cb144c7a	3673	ret = mbedtls_ssl_hw_record_read( ssl );
JMF	12:0071cb144c7a	3674	if( ret != 0 && ret != MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH )
JMF	12:0071cb144c7a	3675	{
JMF	12:0071cb144c7a	3676	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_read", ret );
JMF	12:0071cb144c7a	3677	return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED );
JMF	12:0071cb144c7a	3678	}
JMF	12:0071cb144c7a	3679
JMF	12:0071cb144c7a	3680	if( ret == 0 )
JMF	12:0071cb144c7a	3681	done = 1;
JMF	12:0071cb144c7a	3682	}
JMF	12:0071cb144c7a	3683	#endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */
JMF	12:0071cb144c7a	3684	if( !done && ssl->transform_in != NULL )
JMF	12:0071cb144c7a	3685	{
JMF	12:0071cb144c7a	3686	if( ( ret = ssl_decrypt_buf( ssl ) ) != 0 )
JMF	12:0071cb144c7a	3687	{
JMF	12:0071cb144c7a	3688	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_decrypt_buf", ret );
JMF	12:0071cb144c7a	3689	return( ret );
JMF	12:0071cb144c7a	3690	}
JMF	12:0071cb144c7a	3691
JMF	12:0071cb144c7a	3692	MBEDTLS_SSL_DEBUG_BUF( 4, "input payload after decrypt",
JMF	12:0071cb144c7a	3693	ssl->in_msg, ssl->in_msglen );
JMF	12:0071cb144c7a	3694
JMF	12:0071cb144c7a	3695	if( ssl->in_msglen > MBEDTLS_SSL_MAX_CONTENT_LEN )
JMF	12:0071cb144c7a	3696	{
JMF	12:0071cb144c7a	3697	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
JMF	12:0071cb144c7a	3698	return( MBEDTLS_ERR_SSL_INVALID_RECORD );
JMF	12:0071cb144c7a	3699	}
JMF	12:0071cb144c7a	3700	}
JMF	12:0071cb144c7a	3701
JMF	12:0071cb144c7a	3702	#if defined(MBEDTLS_ZLIB_SUPPORT)
JMF	12:0071cb144c7a	3703	if( ssl->transform_in != NULL &&
JMF	12:0071cb144c7a	3704	ssl->session_in->compression == MBEDTLS_SSL_COMPRESS_DEFLATE )
JMF	12:0071cb144c7a	3705	{
JMF	12:0071cb144c7a	3706	if( ( ret = ssl_decompress_buf( ssl ) ) != 0 )
JMF	12:0071cb144c7a	3707	{
JMF	12:0071cb144c7a	3708	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_decompress_buf", ret );
JMF	12:0071cb144c7a	3709	return( ret );
JMF	12:0071cb144c7a	3710	}
JMF	12:0071cb144c7a	3711	}
JMF	12:0071cb144c7a	3712	#endif /* MBEDTLS_ZLIB_SUPPORT */
JMF	12:0071cb144c7a	3713
JMF	12:0071cb144c7a	3714	#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
JMF	12:0071cb144c7a	3715	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	3716	{
JMF	12:0071cb144c7a	3717	mbedtls_ssl_dtls_replay_update( ssl );
JMF	12:0071cb144c7a	3718	}
JMF	12:0071cb144c7a	3719	#endif
JMF	12:0071cb144c7a	3720
JMF	12:0071cb144c7a	3721	return( 0 );
JMF	12:0071cb144c7a	3722	}
JMF	12:0071cb144c7a	3723
JMF	12:0071cb144c7a	3724	static void ssl_handshake_wrapup_free_hs_transform( mbedtls_ssl_context *ssl );
JMF	12:0071cb144c7a	3725
JMF	12:0071cb144c7a	3726	/*
JMF	12:0071cb144c7a	3727	* Read a record.
JMF	12:0071cb144c7a	3728	*
JMF	12:0071cb144c7a	3729	* Silently ignore non-fatal alert (and for DTLS, invalid records as well,
JMF	12:0071cb144c7a	3730	* RFC 6347 4.1.2.7) and continue reading until a valid record is found.
JMF	12:0071cb144c7a	3731	*
JMF	12:0071cb144c7a	3732	*/
JMF	12:0071cb144c7a	3733	int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	3734	{
JMF	12:0071cb144c7a	3735	int ret;
JMF	12:0071cb144c7a	3736
JMF	12:0071cb144c7a	3737	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> read record" ) );
JMF	12:0071cb144c7a	3738
JMF	12:0071cb144c7a	3739	if( ssl->in_hslen != 0 && ssl->in_hslen < ssl->in_msglen )
JMF	12:0071cb144c7a	3740	{
JMF	12:0071cb144c7a	3741	/*
JMF	12:0071cb144c7a	3742	* Get next Handshake message in the current record
JMF	12:0071cb144c7a	3743	*/
JMF	12:0071cb144c7a	3744	ssl->in_msglen -= ssl->in_hslen;
JMF	12:0071cb144c7a	3745
JMF	12:0071cb144c7a	3746	memmove( ssl->in_msg, ssl->in_msg + ssl->in_hslen,
JMF	12:0071cb144c7a	3747	ssl->in_msglen );
JMF	12:0071cb144c7a	3748
JMF	12:0071cb144c7a	3749	MBEDTLS_SSL_DEBUG_BUF( 4, "remaining content in record",
JMF	12:0071cb144c7a	3750	ssl->in_msg, ssl->in_msglen );
JMF	12:0071cb144c7a	3751
JMF	12:0071cb144c7a	3752	if( ( ret = ssl_prepare_handshake_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	3753	return( ret );
JMF	12:0071cb144c7a	3754
JMF	12:0071cb144c7a	3755	return( 0 );
JMF	12:0071cb144c7a	3756	}
JMF	12:0071cb144c7a	3757
JMF	12:0071cb144c7a	3758	ssl->in_hslen = 0;
JMF	12:0071cb144c7a	3759
JMF	12:0071cb144c7a	3760	/*
JMF	12:0071cb144c7a	3761	* Read the record header and parse it
JMF	12:0071cb144c7a	3762	*/
JMF	12:0071cb144c7a	3763	read_record_header:
JMF	12:0071cb144c7a	3764	if( ( ret = mbedtls_ssl_fetch_input( ssl, mbedtls_ssl_hdr_len( ssl ) ) ) != 0 )
JMF	12:0071cb144c7a	3765	{
JMF	12:0071cb144c7a	3766	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_fetch_input", ret );
JMF	12:0071cb144c7a	3767	return( ret );
JMF	12:0071cb144c7a	3768	}
JMF	12:0071cb144c7a	3769
JMF	12:0071cb144c7a	3770	if( ( ret = ssl_parse_record_header( ssl ) ) != 0 )
JMF	12:0071cb144c7a	3771	{
JMF	12:0071cb144c7a	3772	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	3773	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
JMF	12:0071cb144c7a	3774	ret != MBEDTLS_ERR_SSL_CLIENT_RECONNECT )
JMF	12:0071cb144c7a	3775	{
JMF	12:0071cb144c7a	3776	if( ret == MBEDTLS_ERR_SSL_UNEXPECTED_RECORD )
JMF	12:0071cb144c7a	3777	{
JMF	12:0071cb144c7a	3778	/* Skip unexpected record (but not whole datagram) */
JMF	12:0071cb144c7a	3779	ssl->next_record_offset = ssl->in_msglen
JMF	12:0071cb144c7a	3780	+ mbedtls_ssl_hdr_len( ssl );
JMF	12:0071cb144c7a	3781
JMF	12:0071cb144c7a	3782	MBEDTLS_SSL_DEBUG_MSG( 1, ( "discarding unexpected record "
JMF	12:0071cb144c7a	3783	"(header)" ) );
JMF	12:0071cb144c7a	3784	}
JMF	12:0071cb144c7a	3785	else
JMF	12:0071cb144c7a	3786	{
JMF	12:0071cb144c7a	3787	/* Skip invalid record and the rest of the datagram */
JMF	12:0071cb144c7a	3788	ssl->next_record_offset = 0;
JMF	12:0071cb144c7a	3789	ssl->in_left = 0;
JMF	12:0071cb144c7a	3790
JMF	12:0071cb144c7a	3791	MBEDTLS_SSL_DEBUG_MSG( 1, ( "discarding invalid record "
JMF	12:0071cb144c7a	3792	"(header)" ) );
JMF	12:0071cb144c7a	3793	}
JMF	12:0071cb144c7a	3794
JMF	12:0071cb144c7a	3795	/* Get next record */
JMF	12:0071cb144c7a	3796	goto read_record_header;
JMF	12:0071cb144c7a	3797	}
JMF	12:0071cb144c7a	3798	#endif
JMF	12:0071cb144c7a	3799	return( ret );
JMF	12:0071cb144c7a	3800	}
JMF	12:0071cb144c7a	3801
JMF	12:0071cb144c7a	3802	/*
JMF	12:0071cb144c7a	3803	* Read and optionally decrypt the message contents
JMF	12:0071cb144c7a	3804	*/
JMF	12:0071cb144c7a	3805	if( ( ret = mbedtls_ssl_fetch_input( ssl,
JMF	12:0071cb144c7a	3806	mbedtls_ssl_hdr_len( ssl ) + ssl->in_msglen ) ) != 0 )
JMF	12:0071cb144c7a	3807	{
JMF	12:0071cb144c7a	3808	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_fetch_input", ret );
JMF	12:0071cb144c7a	3809	return( ret );
JMF	12:0071cb144c7a	3810	}
JMF	12:0071cb144c7a	3811
JMF	12:0071cb144c7a	3812	/* Done reading this record, get ready for the next one */
JMF	12:0071cb144c7a	3813	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	3814	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	3815	ssl->next_record_offset = ssl->in_msglen + mbedtls_ssl_hdr_len( ssl );
JMF	12:0071cb144c7a	3816	else
JMF	12:0071cb144c7a	3817	#endif
JMF	12:0071cb144c7a	3818	ssl->in_left = 0;
JMF	12:0071cb144c7a	3819
JMF	12:0071cb144c7a	3820	if( ( ret = ssl_prepare_record_content( ssl ) ) != 0 )
JMF	12:0071cb144c7a	3821	{
JMF	12:0071cb144c7a	3822	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	3823	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	3824	{
JMF	12:0071cb144c7a	3825	/* Silently discard invalid records */
JMF	12:0071cb144c7a	3826	if( ret == MBEDTLS_ERR_SSL_INVALID_RECORD \|\|
JMF	12:0071cb144c7a	3827	ret == MBEDTLS_ERR_SSL_INVALID_MAC )
JMF	12:0071cb144c7a	3828	{
JMF	12:0071cb144c7a	3829	/* Except when waiting for Finished as a bad mac here
JMF	12:0071cb144c7a	3830	* probably means something went wrong in the handshake
JMF	12:0071cb144c7a	3831	* (eg wrong psk used, mitm downgrade attempt, etc.) */
JMF	12:0071cb144c7a	3832	if( ssl->state == MBEDTLS_SSL_CLIENT_FINISHED \|\|
JMF	12:0071cb144c7a	3833	ssl->state == MBEDTLS_SSL_SERVER_FINISHED )
JMF	12:0071cb144c7a	3834	{
JMF	12:0071cb144c7a	3835	#if defined(MBEDTLS_SSL_ALL_ALERT_MESSAGES)
JMF	12:0071cb144c7a	3836	if( ret == MBEDTLS_ERR_SSL_INVALID_MAC )
JMF	12:0071cb144c7a	3837	{
JMF	12:0071cb144c7a	3838	mbedtls_ssl_send_alert_message( ssl,
JMF	12:0071cb144c7a	3839	MBEDTLS_SSL_ALERT_LEVEL_FATAL,
JMF	12:0071cb144c7a	3840	MBEDTLS_SSL_ALERT_MSG_BAD_RECORD_MAC );
JMF	12:0071cb144c7a	3841	}
JMF	12:0071cb144c7a	3842	#endif
JMF	12:0071cb144c7a	3843	return( ret );
JMF	12:0071cb144c7a	3844	}
JMF	12:0071cb144c7a	3845
JMF	12:0071cb144c7a	3846	#if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT)
JMF	12:0071cb144c7a	3847	if( ssl->conf->badmac_limit != 0 &&
JMF	12:0071cb144c7a	3848	++ssl->badmac_seen >= ssl->conf->badmac_limit )
JMF	12:0071cb144c7a	3849	{
JMF	12:0071cb144c7a	3850	MBEDTLS_SSL_DEBUG_MSG( 1, ( "too many records with bad MAC" ) );
JMF	12:0071cb144c7a	3851	return( MBEDTLS_ERR_SSL_INVALID_MAC );
JMF	12:0071cb144c7a	3852	}
JMF	12:0071cb144c7a	3853	#endif
JMF	12:0071cb144c7a	3854
JMF	12:0071cb144c7a	3855	MBEDTLS_SSL_DEBUG_MSG( 1, ( "discarding invalid record (mac)" ) );
JMF	12:0071cb144c7a	3856	goto read_record_header;
JMF	12:0071cb144c7a	3857	}
JMF	12:0071cb144c7a	3858
JMF	12:0071cb144c7a	3859	return( ret );
JMF	12:0071cb144c7a	3860	}
JMF	12:0071cb144c7a	3861	else
JMF	12:0071cb144c7a	3862	#endif
JMF	12:0071cb144c7a	3863	{
JMF	12:0071cb144c7a	3864	/* Error out (and send alert) on invalid records */
JMF	12:0071cb144c7a	3865	#if defined(MBEDTLS_SSL_ALL_ALERT_MESSAGES)
JMF	12:0071cb144c7a	3866	if( ret == MBEDTLS_ERR_SSL_INVALID_MAC )
JMF	12:0071cb144c7a	3867	{
JMF	12:0071cb144c7a	3868	mbedtls_ssl_send_alert_message( ssl,
JMF	12:0071cb144c7a	3869	MBEDTLS_SSL_ALERT_LEVEL_FATAL,
JMF	12:0071cb144c7a	3870	MBEDTLS_SSL_ALERT_MSG_BAD_RECORD_MAC );
JMF	12:0071cb144c7a	3871	}
JMF	12:0071cb144c7a	3872	#endif
JMF	12:0071cb144c7a	3873	return( ret );
JMF	12:0071cb144c7a	3874	}
JMF	12:0071cb144c7a	3875	}
JMF	12:0071cb144c7a	3876
JMF	12:0071cb144c7a	3877	/*
JMF	12:0071cb144c7a	3878	* When we sent the last flight of the handshake, we MUST respond to a
JMF	12:0071cb144c7a	3879	* retransmit of the peer's previous flight with a retransmit. (In
JMF	12:0071cb144c7a	3880	* practice, only the Finished message will make it, other messages
JMF	12:0071cb144c7a	3881	* including CCS use the old transform so they're dropped as invalid.)
JMF	12:0071cb144c7a	3882	*
JMF	12:0071cb144c7a	3883	* If the record we received is not a handshake message, however, it
JMF	12:0071cb144c7a	3884	* means the peer received our last flight so we can clean up
JMF	12:0071cb144c7a	3885	* handshake info.
JMF	12:0071cb144c7a	3886	*
JMF	12:0071cb144c7a	3887	* This check needs to be done before prepare_handshake() due to an edge
JMF	12:0071cb144c7a	3888	* case: if the client immediately requests renegotiation, this
JMF	12:0071cb144c7a	3889	* finishes the current handshake first, avoiding the new ClientHello
JMF	12:0071cb144c7a	3890	* being mistaken for an ancient message in the current handshake.
JMF	12:0071cb144c7a	3891	*/
JMF	12:0071cb144c7a	3892	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	3893	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
JMF	12:0071cb144c7a	3894	ssl->handshake != NULL &&
JMF	12:0071cb144c7a	3895	ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	3896	{
JMF	12:0071cb144c7a	3897	if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE &&
JMF	12:0071cb144c7a	3898	ssl->in_msg[0] == MBEDTLS_SSL_HS_FINISHED )
JMF	12:0071cb144c7a	3899	{
JMF	12:0071cb144c7a	3900	MBEDTLS_SSL_DEBUG_MSG( 2, ( "received retransmit of last flight" ) );
JMF	12:0071cb144c7a	3901
JMF	12:0071cb144c7a	3902	if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 )
JMF	12:0071cb144c7a	3903	{
JMF	12:0071cb144c7a	3904	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_resend", ret );
JMF	12:0071cb144c7a	3905	return( ret );
JMF	12:0071cb144c7a	3906	}
JMF	12:0071cb144c7a	3907
JMF	12:0071cb144c7a	3908	return( MBEDTLS_ERR_SSL_WANT_READ );
JMF	12:0071cb144c7a	3909	}
JMF	12:0071cb144c7a	3910	else
JMF	12:0071cb144c7a	3911	{
JMF	12:0071cb144c7a	3912	ssl_handshake_wrapup_free_hs_transform( ssl );
JMF	12:0071cb144c7a	3913	}
JMF	12:0071cb144c7a	3914	}
JMF	12:0071cb144c7a	3915	#endif
JMF	12:0071cb144c7a	3916
JMF	12:0071cb144c7a	3917	/*
JMF	12:0071cb144c7a	3918	* Handle particular types of records
JMF	12:0071cb144c7a	3919	*/
JMF	12:0071cb144c7a	3920	if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE )
JMF	12:0071cb144c7a	3921	{
JMF	12:0071cb144c7a	3922	if( ( ret = ssl_prepare_handshake_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	3923	return( ret );
JMF	12:0071cb144c7a	3924	}
JMF	12:0071cb144c7a	3925
JMF	12:0071cb144c7a	3926	if( ssl->in_msgtype == MBEDTLS_SSL_MSG_ALERT )
JMF	12:0071cb144c7a	3927	{
JMF	12:0071cb144c7a	3928	MBEDTLS_SSL_DEBUG_MSG( 2, ( "got an alert message, type: [%d:%d]",
JMF	12:0071cb144c7a	3929	ssl->in_msg[0], ssl->in_msg[1] ) );
JMF	12:0071cb144c7a	3930
JMF	12:0071cb144c7a	3931	/*
JMF	12:0071cb144c7a	3932	* Ignore non-fatal alerts, except close_notify and no_renegotiation
JMF	12:0071cb144c7a	3933	*/
JMF	12:0071cb144c7a	3934	if( ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_FATAL )
JMF	12:0071cb144c7a	3935	{
JMF	12:0071cb144c7a	3936	MBEDTLS_SSL_DEBUG_MSG( 1, ( "is a fatal alert message (msg %d)",
JMF	12:0071cb144c7a	3937	ssl->in_msg[1] ) );
JMF	12:0071cb144c7a	3938	return( MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE );
JMF	12:0071cb144c7a	3939	}
JMF	12:0071cb144c7a	3940
JMF	12:0071cb144c7a	3941	if( ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_WARNING &&
JMF	12:0071cb144c7a	3942	ssl->in_msg[1] == MBEDTLS_SSL_ALERT_MSG_CLOSE_NOTIFY )
JMF	12:0071cb144c7a	3943	{
JMF	12:0071cb144c7a	3944	MBEDTLS_SSL_DEBUG_MSG( 2, ( "is a close notify message" ) );
JMF	12:0071cb144c7a	3945	return( MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY );
JMF	12:0071cb144c7a	3946	}
JMF	12:0071cb144c7a	3947
JMF	12:0071cb144c7a	3948	#if defined(MBEDTLS_SSL_RENEGOTIATION_ENABLED)
JMF	12:0071cb144c7a	3949	if( ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_WARNING &&
JMF	12:0071cb144c7a	3950	ssl->in_msg[1] == MBEDTLS_SSL_ALERT_MSG_NO_RENEGOTIATION )
JMF	12:0071cb144c7a	3951	{
JMF	12:0071cb144c7a	3952	MBEDTLS_SSL_DEBUG_MSG( 2, ( "is a SSLv3 no_cert" ) );
JMF	12:0071cb144c7a	3953	/* Will be handled when trying to parse ServerHello */
JMF	12:0071cb144c7a	3954	return( 0 );
JMF	12:0071cb144c7a	3955	}
JMF	12:0071cb144c7a	3956	#endif
JMF	12:0071cb144c7a	3957
JMF	12:0071cb144c7a	3958	#if defined(MBEDTLS_SSL_PROTO_SSL3) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	3959	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 &&
JMF	12:0071cb144c7a	3960	ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER &&
JMF	12:0071cb144c7a	3961	ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_WARNING &&
JMF	12:0071cb144c7a	3962	ssl->in_msg[1] == MBEDTLS_SSL_ALERT_MSG_NO_CERT )
JMF	12:0071cb144c7a	3963	{
JMF	12:0071cb144c7a	3964	MBEDTLS_SSL_DEBUG_MSG( 2, ( "is a SSLv3 no_cert" ) );
JMF	12:0071cb144c7a	3965	/* Will be handled in mbedtls_ssl_parse_certificate() */
JMF	12:0071cb144c7a	3966	return( 0 );
JMF	12:0071cb144c7a	3967	}
JMF	12:0071cb144c7a	3968	#endif /* MBEDTLS_SSL_PROTO_SSL3 && MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	3969
JMF	12:0071cb144c7a	3970	/* Silently ignore: fetch new message */
JMF	12:0071cb144c7a	3971	goto read_record_header;
JMF	12:0071cb144c7a	3972	}
JMF	12:0071cb144c7a	3973
JMF	12:0071cb144c7a	3974	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= read record" ) );
JMF	12:0071cb144c7a	3975
JMF	12:0071cb144c7a	3976	return( 0 );
JMF	12:0071cb144c7a	3977	}
JMF	12:0071cb144c7a	3978
JMF	12:0071cb144c7a	3979	int mbedtls_ssl_send_fatal_handshake_failure( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	3980	{
JMF	12:0071cb144c7a	3981	int ret;
JMF	12:0071cb144c7a	3982
JMF	12:0071cb144c7a	3983	if( ( ret = mbedtls_ssl_send_alert_message( ssl,
JMF	12:0071cb144c7a	3984	MBEDTLS_SSL_ALERT_LEVEL_FATAL,
JMF	12:0071cb144c7a	3985	MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE ) ) != 0 )
JMF	12:0071cb144c7a	3986	{
JMF	12:0071cb144c7a	3987	return( ret );
JMF	12:0071cb144c7a	3988	}
JMF	12:0071cb144c7a	3989
JMF	12:0071cb144c7a	3990	return( 0 );
JMF	12:0071cb144c7a	3991	}
JMF	12:0071cb144c7a	3992
JMF	12:0071cb144c7a	3993	int mbedtls_ssl_send_alert_message( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	3994	unsigned char level,
JMF	12:0071cb144c7a	3995	unsigned char message )
JMF	12:0071cb144c7a	3996	{
JMF	12:0071cb144c7a	3997	int ret;
JMF	12:0071cb144c7a	3998
JMF	12:0071cb144c7a	3999	if( ssl == NULL \|\| ssl->conf == NULL )
JMF	12:0071cb144c7a	4000	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	4001
JMF	12:0071cb144c7a	4002	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> send alert message" ) );
JMF	12:0071cb144c7a	4003
JMF	12:0071cb144c7a	4004	ssl->out_msgtype = MBEDTLS_SSL_MSG_ALERT;
JMF	12:0071cb144c7a	4005	ssl->out_msglen = 2;
JMF	12:0071cb144c7a	4006	ssl->out_msg[0] = level;
JMF	12:0071cb144c7a	4007	ssl->out_msg[1] = message;
JMF	12:0071cb144c7a	4008
JMF	12:0071cb144c7a	4009	if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	4010	{
JMF	12:0071cb144c7a	4011	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret );
JMF	12:0071cb144c7a	4012	return( ret );
JMF	12:0071cb144c7a	4013	}
JMF	12:0071cb144c7a	4014
JMF	12:0071cb144c7a	4015	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= send alert message" ) );
JMF	12:0071cb144c7a	4016
JMF	12:0071cb144c7a	4017	return( 0 );
JMF	12:0071cb144c7a	4018	}
JMF	12:0071cb144c7a	4019
JMF	12:0071cb144c7a	4020	/*
JMF	12:0071cb144c7a	4021	* Handshake functions
JMF	12:0071cb144c7a	4022	*/
JMF	12:0071cb144c7a	4023	#if !defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED) && \
JMF	12:0071cb144c7a	4024	!defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED) && \
JMF	12:0071cb144c7a	4025	!defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED) && \
JMF	12:0071cb144c7a	4026	!defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED) && \
JMF	12:0071cb144c7a	4027	!defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED) && \
JMF	12:0071cb144c7a	4028	!defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED) && \
JMF	12:0071cb144c7a	4029	!defined(MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
JMF	12:0071cb144c7a	4030	int mbedtls_ssl_write_certificate( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4031	{
JMF	12:0071cb144c7a	4032	const mbedtls_ssl_ciphersuite_t *ciphersuite_info = ssl->transform_negotiate->ciphersuite_info;
JMF	12:0071cb144c7a	4033
JMF	12:0071cb144c7a	4034	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write certificate" ) );
JMF	12:0071cb144c7a	4035
JMF	12:0071cb144c7a	4036	if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK \|\|
JMF	12:0071cb144c7a	4037	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK \|\|
JMF	12:0071cb144c7a	4038	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK \|\|
JMF	12:0071cb144c7a	4039	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE )
JMF	12:0071cb144c7a	4040	{
JMF	12:0071cb144c7a	4041	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate" ) );
JMF	12:0071cb144c7a	4042	ssl->state++;
JMF	12:0071cb144c7a	4043	return( 0 );
JMF	12:0071cb144c7a	4044	}
JMF	12:0071cb144c7a	4045
JMF	12:0071cb144c7a	4046	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	4047	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	4048	}
JMF	12:0071cb144c7a	4049
JMF	12:0071cb144c7a	4050	int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4051	{
JMF	12:0071cb144c7a	4052	const mbedtls_ssl_ciphersuite_t *ciphersuite_info = ssl->transform_negotiate->ciphersuite_info;
JMF	12:0071cb144c7a	4053
JMF	12:0071cb144c7a	4054	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate" ) );
JMF	12:0071cb144c7a	4055
JMF	12:0071cb144c7a	4056	if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK \|\|
JMF	12:0071cb144c7a	4057	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK \|\|
JMF	12:0071cb144c7a	4058	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK \|\|
JMF	12:0071cb144c7a	4059	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE )
JMF	12:0071cb144c7a	4060	{
JMF	12:0071cb144c7a	4061	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) );
JMF	12:0071cb144c7a	4062	ssl->state++;
JMF	12:0071cb144c7a	4063	return( 0 );
JMF	12:0071cb144c7a	4064	}
JMF	12:0071cb144c7a	4065
JMF	12:0071cb144c7a	4066	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	4067	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	4068	}
JMF	12:0071cb144c7a	4069	#else
JMF	12:0071cb144c7a	4070	int mbedtls_ssl_write_certificate( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4071	{
JMF	12:0071cb144c7a	4072	int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
JMF	12:0071cb144c7a	4073	size_t i, n;
JMF	12:0071cb144c7a	4074	const mbedtls_x509_crt *crt;
JMF	12:0071cb144c7a	4075	const mbedtls_ssl_ciphersuite_t *ciphersuite_info = ssl->transform_negotiate->ciphersuite_info;
JMF	12:0071cb144c7a	4076
JMF	12:0071cb144c7a	4077	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write certificate" ) );
JMF	12:0071cb144c7a	4078
JMF	12:0071cb144c7a	4079	if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK \|\|
JMF	12:0071cb144c7a	4080	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK \|\|
JMF	12:0071cb144c7a	4081	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK \|\|
JMF	12:0071cb144c7a	4082	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE )
JMF	12:0071cb144c7a	4083	{
JMF	12:0071cb144c7a	4084	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate" ) );
JMF	12:0071cb144c7a	4085	ssl->state++;
JMF	12:0071cb144c7a	4086	return( 0 );
JMF	12:0071cb144c7a	4087	}
JMF	12:0071cb144c7a	4088
JMF	12:0071cb144c7a	4089	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	4090	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	4091	{
JMF	12:0071cb144c7a	4092	if( ssl->client_auth == 0 )
JMF	12:0071cb144c7a	4093	{
JMF	12:0071cb144c7a	4094	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate" ) );
JMF	12:0071cb144c7a	4095	ssl->state++;
JMF	12:0071cb144c7a	4096	return( 0 );
JMF	12:0071cb144c7a	4097	}
JMF	12:0071cb144c7a	4098
JMF	12:0071cb144c7a	4099	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	4100	/*
JMF	12:0071cb144c7a	4101	* If using SSLv3 and got no cert, send an Alert message
JMF	12:0071cb144c7a	4102	* (otherwise an empty Certificate message will be sent).
JMF	12:0071cb144c7a	4103	*/
JMF	12:0071cb144c7a	4104	if( mbedtls_ssl_own_cert( ssl ) == NULL &&
JMF	12:0071cb144c7a	4105	ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	4106	{
JMF	12:0071cb144c7a	4107	ssl->out_msglen = 2;
JMF	12:0071cb144c7a	4108	ssl->out_msgtype = MBEDTLS_SSL_MSG_ALERT;
JMF	12:0071cb144c7a	4109	ssl->out_msg[0] = MBEDTLS_SSL_ALERT_LEVEL_WARNING;
JMF	12:0071cb144c7a	4110	ssl->out_msg[1] = MBEDTLS_SSL_ALERT_MSG_NO_CERT;
JMF	12:0071cb144c7a	4111
JMF	12:0071cb144c7a	4112	MBEDTLS_SSL_DEBUG_MSG( 2, ( "got no certificate to send" ) );
JMF	12:0071cb144c7a	4113	goto write_msg;
JMF	12:0071cb144c7a	4114	}
JMF	12:0071cb144c7a	4115	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	4116	}
JMF	12:0071cb144c7a	4117	#endif /* MBEDTLS_SSL_CLI_C */
JMF	12:0071cb144c7a	4118	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	4119	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	4120	{
JMF	12:0071cb144c7a	4121	if( mbedtls_ssl_own_cert( ssl ) == NULL )
JMF	12:0071cb144c7a	4122	{
JMF	12:0071cb144c7a	4123	MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no certificate to send" ) );
JMF	12:0071cb144c7a	4124	return( MBEDTLS_ERR_SSL_CERTIFICATE_REQUIRED );
JMF	12:0071cb144c7a	4125	}
JMF	12:0071cb144c7a	4126	}
JMF	12:0071cb144c7a	4127	#endif
JMF	12:0071cb144c7a	4128
JMF	12:0071cb144c7a	4129	MBEDTLS_SSL_DEBUG_CRT( 3, "own certificate", mbedtls_ssl_own_cert( ssl ) );
JMF	12:0071cb144c7a	4130
JMF	12:0071cb144c7a	4131	/*
JMF	12:0071cb144c7a	4132	* 0 . 0 handshake type
JMF	12:0071cb144c7a	4133	* 1 . 3 handshake length
JMF	12:0071cb144c7a	4134	* 4 . 6 length of all certs
JMF	12:0071cb144c7a	4135	* 7 . 9 length of cert. 1
JMF	12:0071cb144c7a	4136	* 10 . n-1 peer certificate
JMF	12:0071cb144c7a	4137	* n . n+2 length of cert. 2
JMF	12:0071cb144c7a	4138	* n+3 . ... upper level cert, etc.
JMF	12:0071cb144c7a	4139	*/
JMF	12:0071cb144c7a	4140	i = 7;
JMF	12:0071cb144c7a	4141	crt = mbedtls_ssl_own_cert( ssl );
JMF	12:0071cb144c7a	4142
JMF	12:0071cb144c7a	4143	while( crt != NULL )
JMF	12:0071cb144c7a	4144	{
JMF	12:0071cb144c7a	4145	n = crt->raw.len;
JMF	12:0071cb144c7a	4146	if( n > MBEDTLS_SSL_MAX_CONTENT_LEN - 3 - i )
JMF	12:0071cb144c7a	4147	{
JMF	12:0071cb144c7a	4148	MBEDTLS_SSL_DEBUG_MSG( 1, ( "certificate too large, %d > %d",
JMF	12:0071cb144c7a	4149	i + 3 + n, MBEDTLS_SSL_MAX_CONTENT_LEN ) );
JMF	12:0071cb144c7a	4150	return( MBEDTLS_ERR_SSL_CERTIFICATE_TOO_LARGE );
JMF	12:0071cb144c7a	4151	}
JMF	12:0071cb144c7a	4152
JMF	12:0071cb144c7a	4153	ssl->out_msg[i ] = (unsigned char)( n >> 16 );
JMF	12:0071cb144c7a	4154	ssl->out_msg[i + 1] = (unsigned char)( n >> 8 );
JMF	12:0071cb144c7a	4155	ssl->out_msg[i + 2] = (unsigned char)( n );
JMF	12:0071cb144c7a	4156
JMF	12:0071cb144c7a	4157	i += 3; memcpy( ssl->out_msg + i, crt->raw.p, n );
JMF	12:0071cb144c7a	4158	i += n; crt = crt->next;
JMF	12:0071cb144c7a	4159	}
JMF	12:0071cb144c7a	4160
JMF	12:0071cb144c7a	4161	ssl->out_msg[4] = (unsigned char)( ( i - 7 ) >> 16 );
JMF	12:0071cb144c7a	4162	ssl->out_msg[5] = (unsigned char)( ( i - 7 ) >> 8 );
JMF	12:0071cb144c7a	4163	ssl->out_msg[6] = (unsigned char)( ( i - 7 ) );
JMF	12:0071cb144c7a	4164
JMF	12:0071cb144c7a	4165	ssl->out_msglen = i;
JMF	12:0071cb144c7a	4166	ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
JMF	12:0071cb144c7a	4167	ssl->out_msg[0] = MBEDTLS_SSL_HS_CERTIFICATE;
JMF	12:0071cb144c7a	4168
JMF	12:0071cb144c7a	4169	#if defined(MBEDTLS_SSL_PROTO_SSL3) && defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	4170	write_msg:
JMF	12:0071cb144c7a	4171	#endif
JMF	12:0071cb144c7a	4172
JMF	12:0071cb144c7a	4173	ssl->state++;
JMF	12:0071cb144c7a	4174
JMF	12:0071cb144c7a	4175	if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	4176	{
JMF	12:0071cb144c7a	4177	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret );
JMF	12:0071cb144c7a	4178	return( ret );
JMF	12:0071cb144c7a	4179	}
JMF	12:0071cb144c7a	4180
JMF	12:0071cb144c7a	4181	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write certificate" ) );
JMF	12:0071cb144c7a	4182
JMF	12:0071cb144c7a	4183	return( ret );
JMF	12:0071cb144c7a	4184	}
JMF	12:0071cb144c7a	4185
JMF	12:0071cb144c7a	4186	int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4187	{
JMF	12:0071cb144c7a	4188	int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
JMF	12:0071cb144c7a	4189	size_t i, n;
JMF	12:0071cb144c7a	4190	const mbedtls_ssl_ciphersuite_t *ciphersuite_info = ssl->transform_negotiate->ciphersuite_info;
JMF	12:0071cb144c7a	4191	int authmode = ssl->conf->authmode;
JMF	12:0071cb144c7a	4192
JMF	12:0071cb144c7a	4193	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate" ) );
JMF	12:0071cb144c7a	4194
JMF	12:0071cb144c7a	4195	if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK \|\|
JMF	12:0071cb144c7a	4196	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK \|\|
JMF	12:0071cb144c7a	4197	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK \|\|
JMF	12:0071cb144c7a	4198	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE )
JMF	12:0071cb144c7a	4199	{
JMF	12:0071cb144c7a	4200	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) );
JMF	12:0071cb144c7a	4201	ssl->state++;
JMF	12:0071cb144c7a	4202	return( 0 );
JMF	12:0071cb144c7a	4203	}
JMF	12:0071cb144c7a	4204
JMF	12:0071cb144c7a	4205	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	4206	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER &&
JMF	12:0071cb144c7a	4207	ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA_PSK )
JMF	12:0071cb144c7a	4208	{
JMF	12:0071cb144c7a	4209	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) );
JMF	12:0071cb144c7a	4210	ssl->state++;
JMF	12:0071cb144c7a	4211	return( 0 );
JMF	12:0071cb144c7a	4212	}
JMF	12:0071cb144c7a	4213
JMF	12:0071cb144c7a	4214	#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
JMF	12:0071cb144c7a	4215	if( ssl->handshake->sni_authmode != MBEDTLS_SSL_VERIFY_UNSET )
JMF	12:0071cb144c7a	4216	authmode = ssl->handshake->sni_authmode;
JMF	12:0071cb144c7a	4217	#endif
JMF	12:0071cb144c7a	4218
JMF	12:0071cb144c7a	4219	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER &&
JMF	12:0071cb144c7a	4220	authmode == MBEDTLS_SSL_VERIFY_NONE )
JMF	12:0071cb144c7a	4221	{
JMF	12:0071cb144c7a	4222	ssl->session_negotiate->verify_result = MBEDTLS_X509_BADCERT_SKIP_VERIFY;
JMF	12:0071cb144c7a	4223	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) );
JMF	12:0071cb144c7a	4224	ssl->state++;
JMF	12:0071cb144c7a	4225	return( 0 );
JMF	12:0071cb144c7a	4226	}
JMF	12:0071cb144c7a	4227	#endif
JMF	12:0071cb144c7a	4228
JMF	12:0071cb144c7a	4229	if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	4230	{
JMF	12:0071cb144c7a	4231	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
JMF	12:0071cb144c7a	4232	return( ret );
JMF	12:0071cb144c7a	4233	}
JMF	12:0071cb144c7a	4234
JMF	12:0071cb144c7a	4235	ssl->state++;
JMF	12:0071cb144c7a	4236
JMF	12:0071cb144c7a	4237	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	4238	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	4239	/*
JMF	12:0071cb144c7a	4240	* Check if the client sent an empty certificate
JMF	12:0071cb144c7a	4241	*/
JMF	12:0071cb144c7a	4242	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER &&
JMF	12:0071cb144c7a	4243	ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	4244	{
JMF	12:0071cb144c7a	4245	if( ssl->in_msglen == 2 &&
JMF	12:0071cb144c7a	4246	ssl->in_msgtype == MBEDTLS_SSL_MSG_ALERT &&
JMF	12:0071cb144c7a	4247	ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_WARNING &&
JMF	12:0071cb144c7a	4248	ssl->in_msg[1] == MBEDTLS_SSL_ALERT_MSG_NO_CERT )
JMF	12:0071cb144c7a	4249	{
JMF	12:0071cb144c7a	4250	MBEDTLS_SSL_DEBUG_MSG( 1, ( "SSLv3 client has no certificate" ) );
JMF	12:0071cb144c7a	4251
JMF	12:0071cb144c7a	4252	ssl->session_negotiate->verify_result = MBEDTLS_X509_BADCERT_MISSING;
JMF	12:0071cb144c7a	4253	if( authmode == MBEDTLS_SSL_VERIFY_OPTIONAL )
JMF	12:0071cb144c7a	4254	return( 0 );
JMF	12:0071cb144c7a	4255	else
JMF	12:0071cb144c7a	4256	return( MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE );
JMF	12:0071cb144c7a	4257	}
JMF	12:0071cb144c7a	4258	}
JMF	12:0071cb144c7a	4259	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	4260
JMF	12:0071cb144c7a	4261	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| \
JMF	12:0071cb144c7a	4262	defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	4263	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER &&
JMF	12:0071cb144c7a	4264	ssl->minor_ver != MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	4265	{
JMF	12:0071cb144c7a	4266	if( ssl->in_hslen == 3 + mbedtls_ssl_hs_hdr_len( ssl ) &&
JMF	12:0071cb144c7a	4267	ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE &&
JMF	12:0071cb144c7a	4268	ssl->in_msg[0] == MBEDTLS_SSL_HS_CERTIFICATE &&
JMF	12:0071cb144c7a	4269	memcmp( ssl->in_msg + mbedtls_ssl_hs_hdr_len( ssl ), "\0\0\0", 3 ) == 0 )
JMF	12:0071cb144c7a	4270	{
JMF	12:0071cb144c7a	4271	MBEDTLS_SSL_DEBUG_MSG( 1, ( "TLSv1 client has no certificate" ) );
JMF	12:0071cb144c7a	4272
JMF	12:0071cb144c7a	4273	ssl->session_negotiate->verify_result = MBEDTLS_X509_BADCERT_MISSING;
JMF	12:0071cb144c7a	4274	if( authmode == MBEDTLS_SSL_VERIFY_OPTIONAL )
JMF	12:0071cb144c7a	4275	return( 0 );
JMF	12:0071cb144c7a	4276	else
JMF	12:0071cb144c7a	4277	return( MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE );
JMF	12:0071cb144c7a	4278	}
JMF	12:0071cb144c7a	4279	}
JMF	12:0071cb144c7a	4280	#endif /* MBEDTLS_SSL_PROTO_TLS1 \|\| MBEDTLS_SSL_PROTO_TLS1_1 \|\| \
JMF	12:0071cb144c7a	4281	MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	4282	#endif /* MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	4283
JMF	12:0071cb144c7a	4284	if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE )
JMF	12:0071cb144c7a	4285	{
JMF	12:0071cb144c7a	4286	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) );
JMF	12:0071cb144c7a	4287	return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
JMF	12:0071cb144c7a	4288	}
JMF	12:0071cb144c7a	4289
JMF	12:0071cb144c7a	4290	if( ssl->in_msg[0] != MBEDTLS_SSL_HS_CERTIFICATE \|\|
JMF	12:0071cb144c7a	4291	ssl->in_hslen < mbedtls_ssl_hs_hdr_len( ssl ) + 3 + 3 )
JMF	12:0071cb144c7a	4292	{
JMF	12:0071cb144c7a	4293	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) );
JMF	12:0071cb144c7a	4294	return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE );
JMF	12:0071cb144c7a	4295	}
JMF	12:0071cb144c7a	4296
JMF	12:0071cb144c7a	4297	i = mbedtls_ssl_hs_hdr_len( ssl );
JMF	12:0071cb144c7a	4298
JMF	12:0071cb144c7a	4299	/*
JMF	12:0071cb144c7a	4300	* Same message structure as in mbedtls_ssl_write_certificate()
JMF	12:0071cb144c7a	4301	*/
JMF	12:0071cb144c7a	4302	n = ( ssl->in_msg[i+1] << 8 ) \| ssl->in_msg[i+2];
JMF	12:0071cb144c7a	4303
JMF	12:0071cb144c7a	4304	if( ssl->in_msg[i] != 0 \|\|
JMF	12:0071cb144c7a	4305	ssl->in_hslen != n + 3 + mbedtls_ssl_hs_hdr_len( ssl ) )
JMF	12:0071cb144c7a	4306	{
JMF	12:0071cb144c7a	4307	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) );
JMF	12:0071cb144c7a	4308	return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE );
JMF	12:0071cb144c7a	4309	}
JMF	12:0071cb144c7a	4310
JMF	12:0071cb144c7a	4311	/* In case we tried to reuse a session but it failed */
JMF	12:0071cb144c7a	4312	if( ssl->session_negotiate->peer_cert != NULL )
JMF	12:0071cb144c7a	4313	{
JMF	12:0071cb144c7a	4314	mbedtls_x509_crt_free( ssl->session_negotiate->peer_cert );
JMF	12:0071cb144c7a	4315	mbedtls_free( ssl->session_negotiate->peer_cert );
JMF	12:0071cb144c7a	4316	}
JMF	12:0071cb144c7a	4317
JMF	12:0071cb144c7a	4318	if( ( ssl->session_negotiate->peer_cert = mbedtls_calloc( 1,
JMF	12:0071cb144c7a	4319	sizeof( mbedtls_x509_crt ) ) ) == NULL )
JMF	12:0071cb144c7a	4320	{
JMF	12:0071cb144c7a	4321	MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed",
JMF	12:0071cb144c7a	4322	sizeof( mbedtls_x509_crt ) ) );
JMF	12:0071cb144c7a	4323	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	4324	}
JMF	12:0071cb144c7a	4325
JMF	12:0071cb144c7a	4326	mbedtls_x509_crt_init( ssl->session_negotiate->peer_cert );
JMF	12:0071cb144c7a	4327
JMF	12:0071cb144c7a	4328	i += 3;
JMF	12:0071cb144c7a	4329
JMF	12:0071cb144c7a	4330	while( i < ssl->in_hslen )
JMF	12:0071cb144c7a	4331	{
JMF	12:0071cb144c7a	4332	if( ssl->in_msg[i] != 0 )
JMF	12:0071cb144c7a	4333	{
JMF	12:0071cb144c7a	4334	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) );
JMF	12:0071cb144c7a	4335	return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE );
JMF	12:0071cb144c7a	4336	}
JMF	12:0071cb144c7a	4337
JMF	12:0071cb144c7a	4338	n = ( (unsigned int) ssl->in_msg[i + 1] << 8 )
JMF	12:0071cb144c7a	4339	\| (unsigned int) ssl->in_msg[i + 2];
JMF	12:0071cb144c7a	4340	i += 3;
JMF	12:0071cb144c7a	4341
JMF	12:0071cb144c7a	4342	if( n < 128 \|\| i + n > ssl->in_hslen )
JMF	12:0071cb144c7a	4343	{
JMF	12:0071cb144c7a	4344	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate message" ) );
JMF	12:0071cb144c7a	4345	return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE );
JMF	12:0071cb144c7a	4346	}
JMF	12:0071cb144c7a	4347
JMF	12:0071cb144c7a	4348	ret = mbedtls_x509_crt_parse_der( ssl->session_negotiate->peer_cert,
JMF	12:0071cb144c7a	4349	ssl->in_msg + i, n );
JMF	12:0071cb144c7a	4350	if( ret != 0 )
JMF	12:0071cb144c7a	4351	{
JMF	12:0071cb144c7a	4352	MBEDTLS_SSL_DEBUG_RET( 1, " mbedtls_x509_crt_parse_der", ret );
JMF	12:0071cb144c7a	4353	return( ret );
JMF	12:0071cb144c7a	4354	}
JMF	12:0071cb144c7a	4355
JMF	12:0071cb144c7a	4356	i += n;
JMF	12:0071cb144c7a	4357	}
JMF	12:0071cb144c7a	4358
JMF	12:0071cb144c7a	4359	MBEDTLS_SSL_DEBUG_CRT( 3, "peer certificate", ssl->session_negotiate->peer_cert );
JMF	12:0071cb144c7a	4360
JMF	12:0071cb144c7a	4361	/*
JMF	12:0071cb144c7a	4362	* On client, make sure the server cert doesn't change during renego to
JMF	12:0071cb144c7a	4363	* avoid "triple handshake" attack: https://secure-resumption.com/
JMF	12:0071cb144c7a	4364	*/
JMF	12:0071cb144c7a	4365	#if defined(MBEDTLS_SSL_RENEGOTIATION) && defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	4366	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT &&
JMF	12:0071cb144c7a	4367	ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS )
JMF	12:0071cb144c7a	4368	{
JMF	12:0071cb144c7a	4369	if( ssl->session->peer_cert == NULL )
JMF	12:0071cb144c7a	4370	{
JMF	12:0071cb144c7a	4371	MBEDTLS_SSL_DEBUG_MSG( 1, ( "new server cert during renegotiation" ) );
JMF	12:0071cb144c7a	4372	return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE );
JMF	12:0071cb144c7a	4373	}
JMF	12:0071cb144c7a	4374
JMF	12:0071cb144c7a	4375	if( ssl->session->peer_cert->raw.len !=
JMF	12:0071cb144c7a	4376	ssl->session_negotiate->peer_cert->raw.len \|\|
JMF	12:0071cb144c7a	4377	memcmp( ssl->session->peer_cert->raw.p,
JMF	12:0071cb144c7a	4378	ssl->session_negotiate->peer_cert->raw.p,
JMF	12:0071cb144c7a	4379	ssl->session->peer_cert->raw.len ) != 0 )
JMF	12:0071cb144c7a	4380	{
JMF	12:0071cb144c7a	4381	MBEDTLS_SSL_DEBUG_MSG( 1, ( "server cert changed during renegotiation" ) );
JMF	12:0071cb144c7a	4382	return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE );
JMF	12:0071cb144c7a	4383	}
JMF	12:0071cb144c7a	4384	}
JMF	12:0071cb144c7a	4385	#endif /* MBEDTLS_SSL_RENEGOTIATION && MBEDTLS_SSL_CLI_C */
JMF	12:0071cb144c7a	4386
JMF	12:0071cb144c7a	4387	if( authmode != MBEDTLS_SSL_VERIFY_NONE )
JMF	12:0071cb144c7a	4388	{
JMF	12:0071cb144c7a	4389	mbedtls_x509_crt *ca_chain;
JMF	12:0071cb144c7a	4390	mbedtls_x509_crl *ca_crl;
JMF	12:0071cb144c7a	4391
JMF	12:0071cb144c7a	4392	#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
JMF	12:0071cb144c7a	4393	if( ssl->handshake->sni_ca_chain != NULL )
JMF	12:0071cb144c7a	4394	{
JMF	12:0071cb144c7a	4395	ca_chain = ssl->handshake->sni_ca_chain;
JMF	12:0071cb144c7a	4396	ca_crl = ssl->handshake->sni_ca_crl;
JMF	12:0071cb144c7a	4397	}
JMF	12:0071cb144c7a	4398	else
JMF	12:0071cb144c7a	4399	#endif
JMF	12:0071cb144c7a	4400	{
JMF	12:0071cb144c7a	4401	ca_chain = ssl->conf->ca_chain;
JMF	12:0071cb144c7a	4402	ca_crl = ssl->conf->ca_crl;
JMF	12:0071cb144c7a	4403	}
JMF	12:0071cb144c7a	4404
JMF	12:0071cb144c7a	4405	if( ca_chain == NULL )
JMF	12:0071cb144c7a	4406	{
JMF	12:0071cb144c7a	4407	MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no CA chain" ) );
JMF	12:0071cb144c7a	4408	return( MBEDTLS_ERR_SSL_CA_CHAIN_REQUIRED );
JMF	12:0071cb144c7a	4409	}
JMF	12:0071cb144c7a	4410
JMF	12:0071cb144c7a	4411	/*
JMF	12:0071cb144c7a	4412	* Main check: verify certificate
JMF	12:0071cb144c7a	4413	*/
JMF	12:0071cb144c7a	4414	ret = mbedtls_x509_crt_verify_with_profile(
JMF	12:0071cb144c7a	4415	ssl->session_negotiate->peer_cert,
JMF	12:0071cb144c7a	4416	ca_chain, ca_crl,
JMF	12:0071cb144c7a	4417	ssl->conf->cert_profile,
JMF	12:0071cb144c7a	4418	ssl->hostname,
JMF	12:0071cb144c7a	4419	&ssl->session_negotiate->verify_result,
JMF	12:0071cb144c7a	4420	ssl->conf->f_vrfy, ssl->conf->p_vrfy );
JMF	12:0071cb144c7a	4421
JMF	12:0071cb144c7a	4422	if( ret != 0 )
JMF	12:0071cb144c7a	4423	{
JMF	12:0071cb144c7a	4424	MBEDTLS_SSL_DEBUG_RET( 1, "x509_verify_cert", ret );
JMF	12:0071cb144c7a	4425	}
JMF	12:0071cb144c7a	4426
JMF	12:0071cb144c7a	4427	/*
JMF	12:0071cb144c7a	4428	* Secondary checks: always done, but change 'ret' only if it was 0
JMF	12:0071cb144c7a	4429	*/
JMF	12:0071cb144c7a	4430
JMF	12:0071cb144c7a	4431	#if defined(MBEDTLS_ECP_C)
JMF	12:0071cb144c7a	4432	{
JMF	12:0071cb144c7a	4433	const mbedtls_pk_context *pk = &ssl->session_negotiate->peer_cert->pk;
JMF	12:0071cb144c7a	4434
JMF	12:0071cb144c7a	4435	/* If certificate uses an EC key, make sure the curve is OK */
JMF	12:0071cb144c7a	4436	if( mbedtls_pk_can_do( pk, MBEDTLS_PK_ECKEY ) &&
JMF	12:0071cb144c7a	4437	mbedtls_ssl_check_curve( ssl, mbedtls_pk_ec( *pk )->grp.id ) != 0 )
JMF	12:0071cb144c7a	4438	{
JMF	12:0071cb144c7a	4439	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate (EC key curve)" ) );
JMF	12:0071cb144c7a	4440	if( ret == 0 )
JMF	12:0071cb144c7a	4441	ret = MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE;
JMF	12:0071cb144c7a	4442	}
JMF	12:0071cb144c7a	4443	}
JMF	12:0071cb144c7a	4444	#endif /* MBEDTLS_ECP_C */
JMF	12:0071cb144c7a	4445
JMF	12:0071cb144c7a	4446	if( mbedtls_ssl_check_cert_usage( ssl->session_negotiate->peer_cert,
JMF	12:0071cb144c7a	4447	ciphersuite_info,
JMF	12:0071cb144c7a	4448	! ssl->conf->endpoint,
JMF	12:0071cb144c7a	4449	&ssl->session_negotiate->verify_result ) != 0 )
JMF	12:0071cb144c7a	4450	{
JMF	12:0071cb144c7a	4451	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate (usage extensions)" ) );
JMF	12:0071cb144c7a	4452	if( ret == 0 )
JMF	12:0071cb144c7a	4453	ret = MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE;
JMF	12:0071cb144c7a	4454	}
JMF	12:0071cb144c7a	4455
JMF	12:0071cb144c7a	4456	if( authmode == MBEDTLS_SSL_VERIFY_OPTIONAL )
JMF	12:0071cb144c7a	4457	ret = 0;
JMF	12:0071cb144c7a	4458	}
JMF	12:0071cb144c7a	4459
JMF	12:0071cb144c7a	4460	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse certificate" ) );
JMF	12:0071cb144c7a	4461
JMF	12:0071cb144c7a	4462	return( ret );
JMF	12:0071cb144c7a	4463	}
JMF	12:0071cb144c7a	4464	#endif /* !MBEDTLS_KEY_EXCHANGE_RSA_ENABLED
JMF	12:0071cb144c7a	4465	!MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED
JMF	12:0071cb144c7a	4466	!MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
JMF	12:0071cb144c7a	4467	!MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
JMF	12:0071cb144c7a	4468	!MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
JMF	12:0071cb144c7a	4469	!MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
JMF	12:0071cb144c7a	4470	!MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED */
JMF	12:0071cb144c7a	4471
JMF	12:0071cb144c7a	4472	int mbedtls_ssl_write_change_cipher_spec( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4473	{
JMF	12:0071cb144c7a	4474	int ret;
JMF	12:0071cb144c7a	4475
JMF	12:0071cb144c7a	4476	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write change cipher spec" ) );
JMF	12:0071cb144c7a	4477
JMF	12:0071cb144c7a	4478	ssl->out_msgtype = MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC;
JMF	12:0071cb144c7a	4479	ssl->out_msglen = 1;
JMF	12:0071cb144c7a	4480	ssl->out_msg[0] = 1;
JMF	12:0071cb144c7a	4481
JMF	12:0071cb144c7a	4482	ssl->state++;
JMF	12:0071cb144c7a	4483
JMF	12:0071cb144c7a	4484	if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	4485	{
JMF	12:0071cb144c7a	4486	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret );
JMF	12:0071cb144c7a	4487	return( ret );
JMF	12:0071cb144c7a	4488	}
JMF	12:0071cb144c7a	4489
JMF	12:0071cb144c7a	4490	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write change cipher spec" ) );
JMF	12:0071cb144c7a	4491
JMF	12:0071cb144c7a	4492	return( 0 );
JMF	12:0071cb144c7a	4493	}
JMF	12:0071cb144c7a	4494
JMF	12:0071cb144c7a	4495	int mbedtls_ssl_parse_change_cipher_spec( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4496	{
JMF	12:0071cb144c7a	4497	int ret;
JMF	12:0071cb144c7a	4498
JMF	12:0071cb144c7a	4499	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse change cipher spec" ) );
JMF	12:0071cb144c7a	4500
JMF	12:0071cb144c7a	4501	if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	4502	{
JMF	12:0071cb144c7a	4503	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
JMF	12:0071cb144c7a	4504	return( ret );
JMF	12:0071cb144c7a	4505	}
JMF	12:0071cb144c7a	4506
JMF	12:0071cb144c7a	4507	if( ssl->in_msgtype != MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC )
JMF	12:0071cb144c7a	4508	{
JMF	12:0071cb144c7a	4509	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad change cipher spec message" ) );
JMF	12:0071cb144c7a	4510	return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
JMF	12:0071cb144c7a	4511	}
JMF	12:0071cb144c7a	4512
JMF	12:0071cb144c7a	4513	if( ssl->in_msglen != 1 \|\| ssl->in_msg[0] != 1 )
JMF	12:0071cb144c7a	4514	{
JMF	12:0071cb144c7a	4515	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad change cipher spec message" ) );
JMF	12:0071cb144c7a	4516	return( MBEDTLS_ERR_SSL_BAD_HS_CHANGE_CIPHER_SPEC );
JMF	12:0071cb144c7a	4517	}
JMF	12:0071cb144c7a	4518
JMF	12:0071cb144c7a	4519	/*
JMF	12:0071cb144c7a	4520	* Switch to our negotiated transform and session parameters for inbound
JMF	12:0071cb144c7a	4521	* data.
JMF	12:0071cb144c7a	4522	*/
JMF	12:0071cb144c7a	4523	MBEDTLS_SSL_DEBUG_MSG( 3, ( "switching to new transform spec for inbound data" ) );
JMF	12:0071cb144c7a	4524	ssl->transform_in = ssl->transform_negotiate;
JMF	12:0071cb144c7a	4525	ssl->session_in = ssl->session_negotiate;
JMF	12:0071cb144c7a	4526
JMF	12:0071cb144c7a	4527	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	4528	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	4529	{
JMF	12:0071cb144c7a	4530	#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
JMF	12:0071cb144c7a	4531	ssl_dtls_replay_reset( ssl );
JMF	12:0071cb144c7a	4532	#endif
JMF	12:0071cb144c7a	4533
JMF	12:0071cb144c7a	4534	/* Increment epoch */
JMF	12:0071cb144c7a	4535	if( ++ssl->in_epoch == 0 )
JMF	12:0071cb144c7a	4536	{
JMF	12:0071cb144c7a	4537	MBEDTLS_SSL_DEBUG_MSG( 1, ( "DTLS epoch would wrap" ) );
JMF	12:0071cb144c7a	4538	return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING );
JMF	12:0071cb144c7a	4539	}
JMF	12:0071cb144c7a	4540	}
JMF	12:0071cb144c7a	4541	else
JMF	12:0071cb144c7a	4542	#endif /* MBEDTLS_SSL_PROTO_DTLS */
JMF	12:0071cb144c7a	4543	memset( ssl->in_ctr, 0, 8 );
JMF	12:0071cb144c7a	4544
JMF	12:0071cb144c7a	4545	/*
JMF	12:0071cb144c7a	4546	* Set the in_msg pointer to the correct location based on IV length
JMF	12:0071cb144c7a	4547	*/
JMF	12:0071cb144c7a	4548	if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 )
JMF	12:0071cb144c7a	4549	{
JMF	12:0071cb144c7a	4550	ssl->in_msg = ssl->in_iv + ssl->transform_negotiate->ivlen -
JMF	12:0071cb144c7a	4551	ssl->transform_negotiate->fixed_ivlen;
JMF	12:0071cb144c7a	4552	}
JMF	12:0071cb144c7a	4553	else
JMF	12:0071cb144c7a	4554	ssl->in_msg = ssl->in_iv;
JMF	12:0071cb144c7a	4555
JMF	12:0071cb144c7a	4556	#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
JMF	12:0071cb144c7a	4557	if( mbedtls_ssl_hw_record_activate != NULL )
JMF	12:0071cb144c7a	4558	{
JMF	12:0071cb144c7a	4559	if( ( ret = mbedtls_ssl_hw_record_activate( ssl, MBEDTLS_SSL_CHANNEL_INBOUND ) ) != 0 )
JMF	12:0071cb144c7a	4560	{
JMF	12:0071cb144c7a	4561	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_activate", ret );
JMF	12:0071cb144c7a	4562	return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED );
JMF	12:0071cb144c7a	4563	}
JMF	12:0071cb144c7a	4564	}
JMF	12:0071cb144c7a	4565	#endif
JMF	12:0071cb144c7a	4566
JMF	12:0071cb144c7a	4567	ssl->state++;
JMF	12:0071cb144c7a	4568
JMF	12:0071cb144c7a	4569	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse change cipher spec" ) );
JMF	12:0071cb144c7a	4570
JMF	12:0071cb144c7a	4571	return( 0 );
JMF	12:0071cb144c7a	4572	}
JMF	12:0071cb144c7a	4573
JMF	12:0071cb144c7a	4574	void mbedtls_ssl_optimize_checksum( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	4575	const mbedtls_ssl_ciphersuite_t *ciphersuite_info )
JMF	12:0071cb144c7a	4576	{
JMF	12:0071cb144c7a	4577	((void) ciphersuite_info);
JMF	12:0071cb144c7a	4578
JMF	12:0071cb144c7a	4579	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1) \|\| \
JMF	12:0071cb144c7a	4580	defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	4581	if( ssl->minor_ver < MBEDTLS_SSL_MINOR_VERSION_3 )
JMF	12:0071cb144c7a	4582	ssl->handshake->update_checksum = ssl_update_checksum_md5sha1;
JMF	12:0071cb144c7a	4583	else
JMF	12:0071cb144c7a	4584	#endif
JMF	12:0071cb144c7a	4585	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	4586	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	4587	if( ciphersuite_info->mac == MBEDTLS_MD_SHA384 )
JMF	12:0071cb144c7a	4588	ssl->handshake->update_checksum = ssl_update_checksum_sha384;
JMF	12:0071cb144c7a	4589	else
JMF	12:0071cb144c7a	4590	#endif
JMF	12:0071cb144c7a	4591	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	4592	if( ciphersuite_info->mac != MBEDTLS_MD_SHA384 )
JMF	12:0071cb144c7a	4593	ssl->handshake->update_checksum = ssl_update_checksum_sha256;
JMF	12:0071cb144c7a	4594	else
JMF	12:0071cb144c7a	4595	#endif
JMF	12:0071cb144c7a	4596	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	4597	{
JMF	12:0071cb144c7a	4598	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	4599	return;
JMF	12:0071cb144c7a	4600	}
JMF	12:0071cb144c7a	4601	}
JMF	12:0071cb144c7a	4602
JMF	12:0071cb144c7a	4603	void mbedtls_ssl_reset_checksum( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4604	{
JMF	12:0071cb144c7a	4605	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1) \|\| \
JMF	12:0071cb144c7a	4606	defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	4607	mbedtls_md5_starts( &ssl->handshake->fin_md5 );
JMF	12:0071cb144c7a	4608	mbedtls_sha1_starts( &ssl->handshake->fin_sha1 );
JMF	12:0071cb144c7a	4609	#endif
JMF	12:0071cb144c7a	4610	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	4611	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	4612	mbedtls_sha256_starts( &ssl->handshake->fin_sha256, 0 );
JMF	12:0071cb144c7a	4613	#endif
JMF	12:0071cb144c7a	4614	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	4615	mbedtls_sha512_starts( &ssl->handshake->fin_sha512, 1 );
JMF	12:0071cb144c7a	4616	#endif
JMF	12:0071cb144c7a	4617	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	4618	}
JMF	12:0071cb144c7a	4619
JMF	12:0071cb144c7a	4620	static void ssl_update_checksum_start( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	4621	const unsigned char *buf, size_t len )
JMF	12:0071cb144c7a	4622	{
JMF	12:0071cb144c7a	4623	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1) \|\| \
JMF	12:0071cb144c7a	4624	defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	4625	mbedtls_md5_update( &ssl->handshake->fin_md5 , buf, len );
JMF	12:0071cb144c7a	4626	mbedtls_sha1_update( &ssl->handshake->fin_sha1, buf, len );
JMF	12:0071cb144c7a	4627	#endif
JMF	12:0071cb144c7a	4628	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	4629	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	4630	mbedtls_sha256_update( &ssl->handshake->fin_sha256, buf, len );
JMF	12:0071cb144c7a	4631	#endif
JMF	12:0071cb144c7a	4632	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	4633	mbedtls_sha512_update( &ssl->handshake->fin_sha512, buf, len );
JMF	12:0071cb144c7a	4634	#endif
JMF	12:0071cb144c7a	4635	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	4636	}
JMF	12:0071cb144c7a	4637
JMF	12:0071cb144c7a	4638	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1) \|\| \
JMF	12:0071cb144c7a	4639	defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	4640	static void ssl_update_checksum_md5sha1( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	4641	const unsigned char *buf, size_t len )
JMF	12:0071cb144c7a	4642	{
JMF	12:0071cb144c7a	4643	mbedtls_md5_update( &ssl->handshake->fin_md5 , buf, len );
JMF	12:0071cb144c7a	4644	mbedtls_sha1_update( &ssl->handshake->fin_sha1, buf, len );
JMF	12:0071cb144c7a	4645	}
JMF	12:0071cb144c7a	4646	#endif
JMF	12:0071cb144c7a	4647
JMF	12:0071cb144c7a	4648	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	4649	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	4650	static void ssl_update_checksum_sha256( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	4651	const unsigned char *buf, size_t len )
JMF	12:0071cb144c7a	4652	{
JMF	12:0071cb144c7a	4653	mbedtls_sha256_update( &ssl->handshake->fin_sha256, buf, len );
JMF	12:0071cb144c7a	4654	}
JMF	12:0071cb144c7a	4655	#endif
JMF	12:0071cb144c7a	4656
JMF	12:0071cb144c7a	4657	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	4658	static void ssl_update_checksum_sha384( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	4659	const unsigned char *buf, size_t len )
JMF	12:0071cb144c7a	4660	{
JMF	12:0071cb144c7a	4661	mbedtls_sha512_update( &ssl->handshake->fin_sha512, buf, len );
JMF	12:0071cb144c7a	4662	}
JMF	12:0071cb144c7a	4663	#endif
JMF	12:0071cb144c7a	4664	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	4665
JMF	12:0071cb144c7a	4666	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	4667	static void ssl_calc_finished_ssl(
JMF	12:0071cb144c7a	4668	mbedtls_ssl_context ssl, unsigned char buf, int from )
JMF	12:0071cb144c7a	4669	{
JMF	12:0071cb144c7a	4670	const char *sender;
JMF	12:0071cb144c7a	4671	mbedtls_md5_context md5;
JMF	12:0071cb144c7a	4672	mbedtls_sha1_context sha1;
JMF	12:0071cb144c7a	4673
JMF	12:0071cb144c7a	4674	unsigned char padbuf[48];
JMF	12:0071cb144c7a	4675	unsigned char md5sum[16];
JMF	12:0071cb144c7a	4676	unsigned char sha1sum[20];
JMF	12:0071cb144c7a	4677
JMF	12:0071cb144c7a	4678	mbedtls_ssl_session *session = ssl->session_negotiate;
JMF	12:0071cb144c7a	4679	if( !session )
JMF	12:0071cb144c7a	4680	session = ssl->session;
JMF	12:0071cb144c7a	4681
JMF	12:0071cb144c7a	4682	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished ssl" ) );
JMF	12:0071cb144c7a	4683
JMF	12:0071cb144c7a	4684	mbedtls_md5_init( &md5 );
JMF	12:0071cb144c7a	4685	mbedtls_sha1_init( &sha1 );
JMF	12:0071cb144c7a	4686
JMF	12:0071cb144c7a	4687	mbedtls_md5_clone( &md5, &ssl->handshake->fin_md5 );
JMF	12:0071cb144c7a	4688	mbedtls_sha1_clone( &sha1, &ssl->handshake->fin_sha1 );
JMF	12:0071cb144c7a	4689
JMF	12:0071cb144c7a	4690	/*
JMF	12:0071cb144c7a	4691	* SSLv3:
JMF	12:0071cb144c7a	4692	* hash =
JMF	12:0071cb144c7a	4693	* MD5( master + pad2 +
JMF	12:0071cb144c7a	4694	* MD5( handshake + sender + master + pad1 ) )
JMF	12:0071cb144c7a	4695	* + SHA1( master + pad2 +
JMF	12:0071cb144c7a	4696	* SHA1( handshake + sender + master + pad1 ) )
JMF	12:0071cb144c7a	4697	*/
JMF	12:0071cb144c7a	4698
JMF	12:0071cb144c7a	4699	#if !defined(MBEDTLS_MD5_ALT)
JMF	12:0071cb144c7a	4700	MBEDTLS_SSL_DEBUG_BUF( 4, "finished md5 state", (unsigned char *)
JMF	12:0071cb144c7a	4701	md5.state, sizeof( md5.state ) );
JMF	12:0071cb144c7a	4702	#endif
JMF	12:0071cb144c7a	4703
JMF	12:0071cb144c7a	4704	#if !defined(MBEDTLS_SHA1_ALT)
JMF	12:0071cb144c7a	4705	MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha1 state", (unsigned char *)
JMF	12:0071cb144c7a	4706	sha1.state, sizeof( sha1.state ) );
JMF	12:0071cb144c7a	4707	#endif
JMF	12:0071cb144c7a	4708
JMF	12:0071cb144c7a	4709	sender = ( from == MBEDTLS_SSL_IS_CLIENT ) ? "CLNT"
JMF	12:0071cb144c7a	4710	: "SRVR";
JMF	12:0071cb144c7a	4711
JMF	12:0071cb144c7a	4712	memset( padbuf, 0x36, 48 );
JMF	12:0071cb144c7a	4713
JMF	12:0071cb144c7a	4714	mbedtls_md5_update( &md5, (const unsigned char *) sender, 4 );
JMF	12:0071cb144c7a	4715	mbedtls_md5_update( &md5, session->master, 48 );
JMF	12:0071cb144c7a	4716	mbedtls_md5_update( &md5, padbuf, 48 );
JMF	12:0071cb144c7a	4717	mbedtls_md5_finish( &md5, md5sum );
JMF	12:0071cb144c7a	4718
JMF	12:0071cb144c7a	4719	mbedtls_sha1_update( &sha1, (const unsigned char *) sender, 4 );
JMF	12:0071cb144c7a	4720	mbedtls_sha1_update( &sha1, session->master, 48 );
JMF	12:0071cb144c7a	4721	mbedtls_sha1_update( &sha1, padbuf, 40 );
JMF	12:0071cb144c7a	4722	mbedtls_sha1_finish( &sha1, sha1sum );
JMF	12:0071cb144c7a	4723
JMF	12:0071cb144c7a	4724	memset( padbuf, 0x5C, 48 );
JMF	12:0071cb144c7a	4725
JMF	12:0071cb144c7a	4726	mbedtls_md5_starts( &md5 );
JMF	12:0071cb144c7a	4727	mbedtls_md5_update( &md5, session->master, 48 );
JMF	12:0071cb144c7a	4728	mbedtls_md5_update( &md5, padbuf, 48 );
JMF	12:0071cb144c7a	4729	mbedtls_md5_update( &md5, md5sum, 16 );
JMF	12:0071cb144c7a	4730	mbedtls_md5_finish( &md5, buf );
JMF	12:0071cb144c7a	4731
JMF	12:0071cb144c7a	4732	mbedtls_sha1_starts( &sha1 );
JMF	12:0071cb144c7a	4733	mbedtls_sha1_update( &sha1, session->master, 48 );
JMF	12:0071cb144c7a	4734	mbedtls_sha1_update( &sha1, padbuf , 40 );
JMF	12:0071cb144c7a	4735	mbedtls_sha1_update( &sha1, sha1sum, 20 );
JMF	12:0071cb144c7a	4736	mbedtls_sha1_finish( &sha1, buf + 16 );
JMF	12:0071cb144c7a	4737
JMF	12:0071cb144c7a	4738	MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, 36 );
JMF	12:0071cb144c7a	4739
JMF	12:0071cb144c7a	4740	mbedtls_md5_free( &md5 );
JMF	12:0071cb144c7a	4741	mbedtls_sha1_free( &sha1 );
JMF	12:0071cb144c7a	4742
JMF	12:0071cb144c7a	4743	mbedtls_zeroize( padbuf, sizeof( padbuf ) );
JMF	12:0071cb144c7a	4744	mbedtls_zeroize( md5sum, sizeof( md5sum ) );
JMF	12:0071cb144c7a	4745	mbedtls_zeroize( sha1sum, sizeof( sha1sum ) );
JMF	12:0071cb144c7a	4746
JMF	12:0071cb144c7a	4747	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
JMF	12:0071cb144c7a	4748	}
JMF	12:0071cb144c7a	4749	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	4750
JMF	12:0071cb144c7a	4751	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	4752	static void ssl_calc_finished_tls(
JMF	12:0071cb144c7a	4753	mbedtls_ssl_context ssl, unsigned char buf, int from )
JMF	12:0071cb144c7a	4754	{
JMF	12:0071cb144c7a	4755	int len = 12;
JMF	12:0071cb144c7a	4756	const char *sender;
JMF	12:0071cb144c7a	4757	mbedtls_md5_context md5;
JMF	12:0071cb144c7a	4758	mbedtls_sha1_context sha1;
JMF	12:0071cb144c7a	4759	unsigned char padbuf[36];
JMF	12:0071cb144c7a	4760
JMF	12:0071cb144c7a	4761	mbedtls_ssl_session *session = ssl->session_negotiate;
JMF	12:0071cb144c7a	4762	if( !session )
JMF	12:0071cb144c7a	4763	session = ssl->session;
JMF	12:0071cb144c7a	4764
JMF	12:0071cb144c7a	4765	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished tls" ) );
JMF	12:0071cb144c7a	4766
JMF	12:0071cb144c7a	4767	mbedtls_md5_init( &md5 );
JMF	12:0071cb144c7a	4768	mbedtls_sha1_init( &sha1 );
JMF	12:0071cb144c7a	4769
JMF	12:0071cb144c7a	4770	mbedtls_md5_clone( &md5, &ssl->handshake->fin_md5 );
JMF	12:0071cb144c7a	4771	mbedtls_sha1_clone( &sha1, &ssl->handshake->fin_sha1 );
JMF	12:0071cb144c7a	4772
JMF	12:0071cb144c7a	4773	/*
JMF	12:0071cb144c7a	4774	* TLSv1:
JMF	12:0071cb144c7a	4775	* hash = PRF( master, finished_label,
JMF	12:0071cb144c7a	4776	* MD5( handshake ) + SHA1( handshake ) )[0..11]
JMF	12:0071cb144c7a	4777	*/
JMF	12:0071cb144c7a	4778
JMF	12:0071cb144c7a	4779	#if !defined(MBEDTLS_MD5_ALT)
JMF	12:0071cb144c7a	4780	MBEDTLS_SSL_DEBUG_BUF( 4, "finished md5 state", (unsigned char *)
JMF	12:0071cb144c7a	4781	md5.state, sizeof( md5.state ) );
JMF	12:0071cb144c7a	4782	#endif
JMF	12:0071cb144c7a	4783
JMF	12:0071cb144c7a	4784	#if !defined(MBEDTLS_SHA1_ALT)
JMF	12:0071cb144c7a	4785	MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha1 state", (unsigned char *)
JMF	12:0071cb144c7a	4786	sha1.state, sizeof( sha1.state ) );
JMF	12:0071cb144c7a	4787	#endif
JMF	12:0071cb144c7a	4788
JMF	12:0071cb144c7a	4789	sender = ( from == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	4790	? "client finished"
JMF	12:0071cb144c7a	4791	: "server finished";
JMF	12:0071cb144c7a	4792
JMF	12:0071cb144c7a	4793	mbedtls_md5_finish( &md5, padbuf );
JMF	12:0071cb144c7a	4794	mbedtls_sha1_finish( &sha1, padbuf + 16 );
JMF	12:0071cb144c7a	4795
JMF	12:0071cb144c7a	4796	ssl->handshake->tls_prf( session->master, 48, sender,
JMF	12:0071cb144c7a	4797	padbuf, 36, buf, len );
JMF	12:0071cb144c7a	4798
JMF	12:0071cb144c7a	4799	MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, len );
JMF	12:0071cb144c7a	4800
JMF	12:0071cb144c7a	4801	mbedtls_md5_free( &md5 );
JMF	12:0071cb144c7a	4802	mbedtls_sha1_free( &sha1 );
JMF	12:0071cb144c7a	4803
JMF	12:0071cb144c7a	4804	mbedtls_zeroize( padbuf, sizeof( padbuf ) );
JMF	12:0071cb144c7a	4805
JMF	12:0071cb144c7a	4806	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
JMF	12:0071cb144c7a	4807	}
JMF	12:0071cb144c7a	4808	#endif /* MBEDTLS_SSL_PROTO_TLS1 \|\| MBEDTLS_SSL_PROTO_TLS1_1 */
JMF	12:0071cb144c7a	4809
JMF	12:0071cb144c7a	4810	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	4811	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	4812	static void ssl_calc_finished_tls_sha256(
JMF	12:0071cb144c7a	4813	mbedtls_ssl_context ssl, unsigned char buf, int from )
JMF	12:0071cb144c7a	4814	{
JMF	12:0071cb144c7a	4815	int len = 12;
JMF	12:0071cb144c7a	4816	const char *sender;
JMF	12:0071cb144c7a	4817	mbedtls_sha256_context sha256;
JMF	12:0071cb144c7a	4818	unsigned char padbuf[32];
JMF	12:0071cb144c7a	4819
JMF	12:0071cb144c7a	4820	mbedtls_ssl_session *session = ssl->session_negotiate;
JMF	12:0071cb144c7a	4821	if( !session )
JMF	12:0071cb144c7a	4822	session = ssl->session;
JMF	12:0071cb144c7a	4823
JMF	12:0071cb144c7a	4824	mbedtls_sha256_init( &sha256 );
JMF	12:0071cb144c7a	4825
JMF	12:0071cb144c7a	4826	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished tls sha256" ) );
JMF	12:0071cb144c7a	4827
JMF	12:0071cb144c7a	4828	mbedtls_sha256_clone( &sha256, &ssl->handshake->fin_sha256 );
JMF	12:0071cb144c7a	4829
JMF	12:0071cb144c7a	4830	/*
JMF	12:0071cb144c7a	4831	* TLSv1.2:
JMF	12:0071cb144c7a	4832	* hash = PRF( master, finished_label,
JMF	12:0071cb144c7a	4833	* Hash( handshake ) )[0.11]
JMF	12:0071cb144c7a	4834	*/
JMF	12:0071cb144c7a	4835
JMF	12:0071cb144c7a	4836	#if !defined(MBEDTLS_SHA256_ALT)
JMF	12:0071cb144c7a	4837	MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha2 state", (unsigned char *)
JMF	12:0071cb144c7a	4838	sha256.state, sizeof( sha256.state ) );
JMF	12:0071cb144c7a	4839	#endif
JMF	12:0071cb144c7a	4840
JMF	12:0071cb144c7a	4841	sender = ( from == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	4842	? "client finished"
JMF	12:0071cb144c7a	4843	: "server finished";
JMF	12:0071cb144c7a	4844
JMF	12:0071cb144c7a	4845	mbedtls_sha256_finish( &sha256, padbuf );
JMF	12:0071cb144c7a	4846
JMF	12:0071cb144c7a	4847	ssl->handshake->tls_prf( session->master, 48, sender,
JMF	12:0071cb144c7a	4848	padbuf, 32, buf, len );
JMF	12:0071cb144c7a	4849
JMF	12:0071cb144c7a	4850	MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, len );
JMF	12:0071cb144c7a	4851
JMF	12:0071cb144c7a	4852	mbedtls_sha256_free( &sha256 );
JMF	12:0071cb144c7a	4853
JMF	12:0071cb144c7a	4854	mbedtls_zeroize( padbuf, sizeof( padbuf ) );
JMF	12:0071cb144c7a	4855
JMF	12:0071cb144c7a	4856	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
JMF	12:0071cb144c7a	4857	}
JMF	12:0071cb144c7a	4858	#endif /* MBEDTLS_SHA256_C */
JMF	12:0071cb144c7a	4859
JMF	12:0071cb144c7a	4860	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	4861	static void ssl_calc_finished_tls_sha384(
JMF	12:0071cb144c7a	4862	mbedtls_ssl_context ssl, unsigned char buf, int from )
JMF	12:0071cb144c7a	4863	{
JMF	12:0071cb144c7a	4864	int len = 12;
JMF	12:0071cb144c7a	4865	const char *sender;
JMF	12:0071cb144c7a	4866	mbedtls_sha512_context sha512;
JMF	12:0071cb144c7a	4867	unsigned char padbuf[48];
JMF	12:0071cb144c7a	4868
JMF	12:0071cb144c7a	4869	mbedtls_ssl_session *session = ssl->session_negotiate;
JMF	12:0071cb144c7a	4870	if( !session )
JMF	12:0071cb144c7a	4871	session = ssl->session;
JMF	12:0071cb144c7a	4872
JMF	12:0071cb144c7a	4873	mbedtls_sha512_init( &sha512 );
JMF	12:0071cb144c7a	4874
JMF	12:0071cb144c7a	4875	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished tls sha384" ) );
JMF	12:0071cb144c7a	4876
JMF	12:0071cb144c7a	4877	mbedtls_sha512_clone( &sha512, &ssl->handshake->fin_sha512 );
JMF	12:0071cb144c7a	4878
JMF	12:0071cb144c7a	4879	/*
JMF	12:0071cb144c7a	4880	* TLSv1.2:
JMF	12:0071cb144c7a	4881	* hash = PRF( master, finished_label,
JMF	12:0071cb144c7a	4882	* Hash( handshake ) )[0.11]
JMF	12:0071cb144c7a	4883	*/
JMF	12:0071cb144c7a	4884
JMF	12:0071cb144c7a	4885	#if !defined(MBEDTLS_SHA512_ALT)
JMF	12:0071cb144c7a	4886	MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha512 state", (unsigned char *)
JMF	12:0071cb144c7a	4887	sha512.state, sizeof( sha512.state ) );
JMF	12:0071cb144c7a	4888	#endif
JMF	12:0071cb144c7a	4889
JMF	12:0071cb144c7a	4890	sender = ( from == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	4891	? "client finished"
JMF	12:0071cb144c7a	4892	: "server finished";
JMF	12:0071cb144c7a	4893
JMF	12:0071cb144c7a	4894	mbedtls_sha512_finish( &sha512, padbuf );
JMF	12:0071cb144c7a	4895
JMF	12:0071cb144c7a	4896	ssl->handshake->tls_prf( session->master, 48, sender,
JMF	12:0071cb144c7a	4897	padbuf, 48, buf, len );
JMF	12:0071cb144c7a	4898
JMF	12:0071cb144c7a	4899	MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, len );
JMF	12:0071cb144c7a	4900
JMF	12:0071cb144c7a	4901	mbedtls_sha512_free( &sha512 );
JMF	12:0071cb144c7a	4902
JMF	12:0071cb144c7a	4903	mbedtls_zeroize( padbuf, sizeof( padbuf ) );
JMF	12:0071cb144c7a	4904
JMF	12:0071cb144c7a	4905	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
JMF	12:0071cb144c7a	4906	}
JMF	12:0071cb144c7a	4907	#endif /* MBEDTLS_SHA512_C */
JMF	12:0071cb144c7a	4908	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	4909
JMF	12:0071cb144c7a	4910	static void ssl_handshake_wrapup_free_hs_transform( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4911	{
JMF	12:0071cb144c7a	4912	MBEDTLS_SSL_DEBUG_MSG( 3, ( "=> handshake wrapup: final free" ) );
JMF	12:0071cb144c7a	4913
JMF	12:0071cb144c7a	4914	/*
JMF	12:0071cb144c7a	4915	* Free our handshake params
JMF	12:0071cb144c7a	4916	*/
JMF	12:0071cb144c7a	4917	mbedtls_ssl_handshake_free( ssl->handshake );
JMF	12:0071cb144c7a	4918	mbedtls_free( ssl->handshake );
JMF	12:0071cb144c7a	4919	ssl->handshake = NULL;
JMF	12:0071cb144c7a	4920
JMF	12:0071cb144c7a	4921	/*
JMF	12:0071cb144c7a	4922	* Free the previous transform and swith in the current one
JMF	12:0071cb144c7a	4923	*/
JMF	12:0071cb144c7a	4924	if( ssl->transform )
JMF	12:0071cb144c7a	4925	{
JMF	12:0071cb144c7a	4926	mbedtls_ssl_transform_free( ssl->transform );
JMF	12:0071cb144c7a	4927	mbedtls_free( ssl->transform );
JMF	12:0071cb144c7a	4928	}
JMF	12:0071cb144c7a	4929	ssl->transform = ssl->transform_negotiate;
JMF	12:0071cb144c7a	4930	ssl->transform_negotiate = NULL;
JMF	12:0071cb144c7a	4931
JMF	12:0071cb144c7a	4932	MBEDTLS_SSL_DEBUG_MSG( 3, ( "<= handshake wrapup: final free" ) );
JMF	12:0071cb144c7a	4933	}
JMF	12:0071cb144c7a	4934
JMF	12:0071cb144c7a	4935	void mbedtls_ssl_handshake_wrapup( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4936	{
JMF	12:0071cb144c7a	4937	int resume = ssl->handshake->resume;
JMF	12:0071cb144c7a	4938
JMF	12:0071cb144c7a	4939	MBEDTLS_SSL_DEBUG_MSG( 3, ( "=> handshake wrapup" ) );
JMF	12:0071cb144c7a	4940
JMF	12:0071cb144c7a	4941	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	4942	if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS )
JMF	12:0071cb144c7a	4943	{
JMF	12:0071cb144c7a	4944	ssl->renego_status = MBEDTLS_SSL_RENEGOTIATION_DONE;
JMF	12:0071cb144c7a	4945	ssl->renego_records_seen = 0;
JMF	12:0071cb144c7a	4946	}
JMF	12:0071cb144c7a	4947	#endif
JMF	12:0071cb144c7a	4948
JMF	12:0071cb144c7a	4949	/*
JMF	12:0071cb144c7a	4950	* Free the previous session and switch in the current one
JMF	12:0071cb144c7a	4951	*/
JMF	12:0071cb144c7a	4952	if( ssl->session )
JMF	12:0071cb144c7a	4953	{
JMF	12:0071cb144c7a	4954	#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
JMF	12:0071cb144c7a	4955	/* RFC 7366 3.1: keep the EtM state */
JMF	12:0071cb144c7a	4956	ssl->session_negotiate->encrypt_then_mac =
JMF	12:0071cb144c7a	4957	ssl->session->encrypt_then_mac;
JMF	12:0071cb144c7a	4958	#endif
JMF	12:0071cb144c7a	4959
JMF	12:0071cb144c7a	4960	mbedtls_ssl_session_free( ssl->session );
JMF	12:0071cb144c7a	4961	mbedtls_free( ssl->session );
JMF	12:0071cb144c7a	4962	}
JMF	12:0071cb144c7a	4963	ssl->session = ssl->session_negotiate;
JMF	12:0071cb144c7a	4964	ssl->session_negotiate = NULL;
JMF	12:0071cb144c7a	4965
JMF	12:0071cb144c7a	4966	/*
JMF	12:0071cb144c7a	4967	* Add cache entry
JMF	12:0071cb144c7a	4968	*/
JMF	12:0071cb144c7a	4969	if( ssl->conf->f_set_cache != NULL &&
JMF	12:0071cb144c7a	4970	ssl->session->id_len != 0 &&
JMF	12:0071cb144c7a	4971	resume == 0 )
JMF	12:0071cb144c7a	4972	{
JMF	12:0071cb144c7a	4973	if( ssl->conf->f_set_cache( ssl->conf->p_cache, ssl->session ) != 0 )
JMF	12:0071cb144c7a	4974	MBEDTLS_SSL_DEBUG_MSG( 1, ( "cache did not store session" ) );
JMF	12:0071cb144c7a	4975	}
JMF	12:0071cb144c7a	4976
JMF	12:0071cb144c7a	4977	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	4978	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
JMF	12:0071cb144c7a	4979	ssl->handshake->flight != NULL )
JMF	12:0071cb144c7a	4980	{
JMF	12:0071cb144c7a	4981	/* Cancel handshake timer */
JMF	12:0071cb144c7a	4982	ssl_set_timer( ssl, 0 );
JMF	12:0071cb144c7a	4983
JMF	12:0071cb144c7a	4984	/* Keep last flight around in case we need to resend it:
JMF	12:0071cb144c7a	4985	* we need the handshake and transform structures for that */
JMF	12:0071cb144c7a	4986	MBEDTLS_SSL_DEBUG_MSG( 3, ( "skip freeing handshake and transform" ) );
JMF	12:0071cb144c7a	4987	}
JMF	12:0071cb144c7a	4988	else
JMF	12:0071cb144c7a	4989	#endif
JMF	12:0071cb144c7a	4990	ssl_handshake_wrapup_free_hs_transform( ssl );
JMF	12:0071cb144c7a	4991
JMF	12:0071cb144c7a	4992	ssl->state++;
JMF	12:0071cb144c7a	4993
JMF	12:0071cb144c7a	4994	MBEDTLS_SSL_DEBUG_MSG( 3, ( "<= handshake wrapup" ) );
JMF	12:0071cb144c7a	4995	}
JMF	12:0071cb144c7a	4996
JMF	12:0071cb144c7a	4997	int mbedtls_ssl_write_finished( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	4998	{
JMF	12:0071cb144c7a	4999	int ret, hash_len;
JMF	12:0071cb144c7a	5000
JMF	12:0071cb144c7a	5001	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write finished" ) );
JMF	12:0071cb144c7a	5002
JMF	12:0071cb144c7a	5003	/*
JMF	12:0071cb144c7a	5004	* Set the out_msg pointer to the correct location based on IV length
JMF	12:0071cb144c7a	5005	*/
JMF	12:0071cb144c7a	5006	if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 )
JMF	12:0071cb144c7a	5007	{
JMF	12:0071cb144c7a	5008	ssl->out_msg = ssl->out_iv + ssl->transform_negotiate->ivlen -
JMF	12:0071cb144c7a	5009	ssl->transform_negotiate->fixed_ivlen;
JMF	12:0071cb144c7a	5010	}
JMF	12:0071cb144c7a	5011	else
JMF	12:0071cb144c7a	5012	ssl->out_msg = ssl->out_iv;
JMF	12:0071cb144c7a	5013
JMF	12:0071cb144c7a	5014	ssl->handshake->calc_finished( ssl, ssl->out_msg + 4, ssl->conf->endpoint );
JMF	12:0071cb144c7a	5015
JMF	12:0071cb144c7a	5016	/*
JMF	12:0071cb144c7a	5017	* RFC 5246 7.4.9 (Page 63) says 12 is the default length and ciphersuites
JMF	12:0071cb144c7a	5018	* may define some other value. Currently (early 2016), no defined
JMF	12:0071cb144c7a	5019	* ciphersuite does this (and this is unlikely to change as activity has
JMF	12:0071cb144c7a	5020	* moved to TLS 1.3 now) so we can keep the hardcoded 12 here.
JMF	12:0071cb144c7a	5021	*/
JMF	12:0071cb144c7a	5022	hash_len = ( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 ) ? 36 : 12;
JMF	12:0071cb144c7a	5023
JMF	12:0071cb144c7a	5024	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	5025	ssl->verify_data_len = hash_len;
JMF	12:0071cb144c7a	5026	memcpy( ssl->own_verify_data, ssl->out_msg + 4, hash_len );
JMF	12:0071cb144c7a	5027	#endif
JMF	12:0071cb144c7a	5028
JMF	12:0071cb144c7a	5029	ssl->out_msglen = 4 + hash_len;
JMF	12:0071cb144c7a	5030	ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
JMF	12:0071cb144c7a	5031	ssl->out_msg[0] = MBEDTLS_SSL_HS_FINISHED;
JMF	12:0071cb144c7a	5032
JMF	12:0071cb144c7a	5033	/*
JMF	12:0071cb144c7a	5034	* In case of session resuming, invert the client and server
JMF	12:0071cb144c7a	5035	* ChangeCipherSpec messages order.
JMF	12:0071cb144c7a	5036	*/
JMF	12:0071cb144c7a	5037	if( ssl->handshake->resume != 0 )
JMF	12:0071cb144c7a	5038	{
JMF	12:0071cb144c7a	5039	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	5040	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	5041	ssl->state = MBEDTLS_SSL_HANDSHAKE_WRAPUP;
JMF	12:0071cb144c7a	5042	#endif
JMF	12:0071cb144c7a	5043	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	5044	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	5045	ssl->state = MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC;
JMF	12:0071cb144c7a	5046	#endif
JMF	12:0071cb144c7a	5047	}
JMF	12:0071cb144c7a	5048	else
JMF	12:0071cb144c7a	5049	ssl->state++;
JMF	12:0071cb144c7a	5050
JMF	12:0071cb144c7a	5051	/*
JMF	12:0071cb144c7a	5052	* Switch to our negotiated transform and session parameters for outbound
JMF	12:0071cb144c7a	5053	* data.
JMF	12:0071cb144c7a	5054	*/
JMF	12:0071cb144c7a	5055	MBEDTLS_SSL_DEBUG_MSG( 3, ( "switching to new transform spec for outbound data" ) );
JMF	12:0071cb144c7a	5056
JMF	12:0071cb144c7a	5057	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	5058	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	5059	{
JMF	12:0071cb144c7a	5060	unsigned char i;
JMF	12:0071cb144c7a	5061
JMF	12:0071cb144c7a	5062	/* Remember current epoch settings for resending */
JMF	12:0071cb144c7a	5063	ssl->handshake->alt_transform_out = ssl->transform_out;
JMF	12:0071cb144c7a	5064	memcpy( ssl->handshake->alt_out_ctr, ssl->out_ctr, 8 );
JMF	12:0071cb144c7a	5065
JMF	12:0071cb144c7a	5066	/* Set sequence_number to zero */
JMF	12:0071cb144c7a	5067	memset( ssl->out_ctr + 2, 0, 6 );
JMF	12:0071cb144c7a	5068
JMF	12:0071cb144c7a	5069	/* Increment epoch */
JMF	12:0071cb144c7a	5070	for( i = 2; i > 0; i-- )
JMF	12:0071cb144c7a	5071	if( ++ssl->out_ctr[i - 1] != 0 )
JMF	12:0071cb144c7a	5072	break;
JMF	12:0071cb144c7a	5073
JMF	12:0071cb144c7a	5074	/* The loop goes to its end iff the counter is wrapping */
JMF	12:0071cb144c7a	5075	if( i == 0 )
JMF	12:0071cb144c7a	5076	{
JMF	12:0071cb144c7a	5077	MBEDTLS_SSL_DEBUG_MSG( 1, ( "DTLS epoch would wrap" ) );
JMF	12:0071cb144c7a	5078	return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING );
JMF	12:0071cb144c7a	5079	}
JMF	12:0071cb144c7a	5080	}
JMF	12:0071cb144c7a	5081	else
JMF	12:0071cb144c7a	5082	#endif /* MBEDTLS_SSL_PROTO_DTLS */
JMF	12:0071cb144c7a	5083	memset( ssl->out_ctr, 0, 8 );
JMF	12:0071cb144c7a	5084
JMF	12:0071cb144c7a	5085	ssl->transform_out = ssl->transform_negotiate;
JMF	12:0071cb144c7a	5086	ssl->session_out = ssl->session_negotiate;
JMF	12:0071cb144c7a	5087
JMF	12:0071cb144c7a	5088	#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
JMF	12:0071cb144c7a	5089	if( mbedtls_ssl_hw_record_activate != NULL )
JMF	12:0071cb144c7a	5090	{
JMF	12:0071cb144c7a	5091	if( ( ret = mbedtls_ssl_hw_record_activate( ssl, MBEDTLS_SSL_CHANNEL_OUTBOUND ) ) != 0 )
JMF	12:0071cb144c7a	5092	{
JMF	12:0071cb144c7a	5093	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_activate", ret );
JMF	12:0071cb144c7a	5094	return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED );
JMF	12:0071cb144c7a	5095	}
JMF	12:0071cb144c7a	5096	}
JMF	12:0071cb144c7a	5097	#endif
JMF	12:0071cb144c7a	5098
JMF	12:0071cb144c7a	5099	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	5100	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	5101	mbedtls_ssl_send_flight_completed( ssl );
JMF	12:0071cb144c7a	5102	#endif
JMF	12:0071cb144c7a	5103
JMF	12:0071cb144c7a	5104	if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	5105	{
JMF	12:0071cb144c7a	5106	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret );
JMF	12:0071cb144c7a	5107	return( ret );
JMF	12:0071cb144c7a	5108	}
JMF	12:0071cb144c7a	5109
JMF	12:0071cb144c7a	5110	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write finished" ) );
JMF	12:0071cb144c7a	5111
JMF	12:0071cb144c7a	5112	return( 0 );
JMF	12:0071cb144c7a	5113	}
JMF	12:0071cb144c7a	5114
JMF	12:0071cb144c7a	5115	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	5116	#define SSL_MAX_HASH_LEN 36
JMF	12:0071cb144c7a	5117	#else
JMF	12:0071cb144c7a	5118	#define SSL_MAX_HASH_LEN 12
JMF	12:0071cb144c7a	5119	#endif
JMF	12:0071cb144c7a	5120
JMF	12:0071cb144c7a	5121	int mbedtls_ssl_parse_finished( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	5122	{
JMF	12:0071cb144c7a	5123	int ret;
JMF	12:0071cb144c7a	5124	unsigned int hash_len;
JMF	12:0071cb144c7a	5125	unsigned char buf[SSL_MAX_HASH_LEN];
JMF	12:0071cb144c7a	5126
JMF	12:0071cb144c7a	5127	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse finished" ) );
JMF	12:0071cb144c7a	5128
JMF	12:0071cb144c7a	5129	ssl->handshake->calc_finished( ssl, buf, ssl->conf->endpoint ^ 1 );
JMF	12:0071cb144c7a	5130
JMF	12:0071cb144c7a	5131	if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	5132	{
JMF	12:0071cb144c7a	5133	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
JMF	12:0071cb144c7a	5134	return( ret );
JMF	12:0071cb144c7a	5135	}
JMF	12:0071cb144c7a	5136
JMF	12:0071cb144c7a	5137	if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE )
JMF	12:0071cb144c7a	5138	{
JMF	12:0071cb144c7a	5139	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad finished message" ) );
JMF	12:0071cb144c7a	5140	return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
JMF	12:0071cb144c7a	5141	}
JMF	12:0071cb144c7a	5142
JMF	12:0071cb144c7a	5143	/* There is currently no ciphersuite using another length with TLS 1.2 */
JMF	12:0071cb144c7a	5144	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	5145	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	5146	hash_len = 36;
JMF	12:0071cb144c7a	5147	else
JMF	12:0071cb144c7a	5148	#endif
JMF	12:0071cb144c7a	5149	hash_len = 12;
JMF	12:0071cb144c7a	5150
JMF	12:0071cb144c7a	5151	if( ssl->in_msg[0] != MBEDTLS_SSL_HS_FINISHED \|\|
JMF	12:0071cb144c7a	5152	ssl->in_hslen != mbedtls_ssl_hs_hdr_len( ssl ) + hash_len )
JMF	12:0071cb144c7a	5153	{
JMF	12:0071cb144c7a	5154	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad finished message" ) );
JMF	12:0071cb144c7a	5155	return( MBEDTLS_ERR_SSL_BAD_HS_FINISHED );
JMF	12:0071cb144c7a	5156	}
JMF	12:0071cb144c7a	5157
JMF	12:0071cb144c7a	5158	if( mbedtls_ssl_safer_memcmp( ssl->in_msg + mbedtls_ssl_hs_hdr_len( ssl ),
JMF	12:0071cb144c7a	5159	buf, hash_len ) != 0 )
JMF	12:0071cb144c7a	5160	{
JMF	12:0071cb144c7a	5161	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad finished message" ) );
JMF	12:0071cb144c7a	5162	return( MBEDTLS_ERR_SSL_BAD_HS_FINISHED );
JMF	12:0071cb144c7a	5163	}
JMF	12:0071cb144c7a	5164
JMF	12:0071cb144c7a	5165	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	5166	ssl->verify_data_len = hash_len;
JMF	12:0071cb144c7a	5167	memcpy( ssl->peer_verify_data, buf, hash_len );
JMF	12:0071cb144c7a	5168	#endif
JMF	12:0071cb144c7a	5169
JMF	12:0071cb144c7a	5170	if( ssl->handshake->resume != 0 )
JMF	12:0071cb144c7a	5171	{
JMF	12:0071cb144c7a	5172	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	5173	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	5174	ssl->state = MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC;
JMF	12:0071cb144c7a	5175	#endif
JMF	12:0071cb144c7a	5176	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	5177	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	5178	ssl->state = MBEDTLS_SSL_HANDSHAKE_WRAPUP;
JMF	12:0071cb144c7a	5179	#endif
JMF	12:0071cb144c7a	5180	}
JMF	12:0071cb144c7a	5181	else
JMF	12:0071cb144c7a	5182	ssl->state++;
JMF	12:0071cb144c7a	5183
JMF	12:0071cb144c7a	5184	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	5185	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	5186	mbedtls_ssl_recv_flight_completed( ssl );
JMF	12:0071cb144c7a	5187	#endif
JMF	12:0071cb144c7a	5188
JMF	12:0071cb144c7a	5189	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse finished" ) );
JMF	12:0071cb144c7a	5190
JMF	12:0071cb144c7a	5191	return( 0 );
JMF	12:0071cb144c7a	5192	}
JMF	12:0071cb144c7a	5193
JMF	12:0071cb144c7a	5194	static void ssl_handshake_params_init( mbedtls_ssl_handshake_params *handshake )
JMF	12:0071cb144c7a	5195	{
JMF	12:0071cb144c7a	5196	memset( handshake, 0, sizeof( mbedtls_ssl_handshake_params ) );
JMF	12:0071cb144c7a	5197
JMF	12:0071cb144c7a	5198	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1) \|\| \
JMF	12:0071cb144c7a	5199	defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	5200	mbedtls_md5_init( &handshake->fin_md5 );
JMF	12:0071cb144c7a	5201	mbedtls_sha1_init( &handshake->fin_sha1 );
JMF	12:0071cb144c7a	5202	mbedtls_md5_starts( &handshake->fin_md5 );
JMF	12:0071cb144c7a	5203	mbedtls_sha1_starts( &handshake->fin_sha1 );
JMF	12:0071cb144c7a	5204	#endif
JMF	12:0071cb144c7a	5205	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	5206	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	5207	mbedtls_sha256_init( &handshake->fin_sha256 );
JMF	12:0071cb144c7a	5208	mbedtls_sha256_starts( &handshake->fin_sha256, 0 );
JMF	12:0071cb144c7a	5209	#endif
JMF	12:0071cb144c7a	5210	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	5211	mbedtls_sha512_init( &handshake->fin_sha512 );
JMF	12:0071cb144c7a	5212	mbedtls_sha512_starts( &handshake->fin_sha512, 1 );
JMF	12:0071cb144c7a	5213	#endif
JMF	12:0071cb144c7a	5214	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	5215
JMF	12:0071cb144c7a	5216	handshake->update_checksum = ssl_update_checksum_start;
JMF	12:0071cb144c7a	5217	handshake->sig_alg = MBEDTLS_SSL_HASH_SHA1;
JMF	12:0071cb144c7a	5218
JMF	12:0071cb144c7a	5219	#if defined(MBEDTLS_DHM_C)
JMF	12:0071cb144c7a	5220	mbedtls_dhm_init( &handshake->dhm_ctx );
JMF	12:0071cb144c7a	5221	#endif
JMF	12:0071cb144c7a	5222	#if defined(MBEDTLS_ECDH_C)
JMF	12:0071cb144c7a	5223	mbedtls_ecdh_init( &handshake->ecdh_ctx );
JMF	12:0071cb144c7a	5224	#endif
JMF	12:0071cb144c7a	5225	#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
JMF	12:0071cb144c7a	5226	mbedtls_ecjpake_init( &handshake->ecjpake_ctx );
JMF	12:0071cb144c7a	5227	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	5228	handshake->ecjpake_cache = NULL;
JMF	12:0071cb144c7a	5229	handshake->ecjpake_cache_len = 0;
JMF	12:0071cb144c7a	5230	#endif
JMF	12:0071cb144c7a	5231	#endif
JMF	12:0071cb144c7a	5232
JMF	12:0071cb144c7a	5233	#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
JMF	12:0071cb144c7a	5234	handshake->sni_authmode = MBEDTLS_SSL_VERIFY_UNSET;
JMF	12:0071cb144c7a	5235	#endif
JMF	12:0071cb144c7a	5236	}
JMF	12:0071cb144c7a	5237
JMF	12:0071cb144c7a	5238	static void ssl_transform_init( mbedtls_ssl_transform *transform )
JMF	12:0071cb144c7a	5239	{
JMF	12:0071cb144c7a	5240	memset( transform, 0, sizeof(mbedtls_ssl_transform) );
JMF	12:0071cb144c7a	5241
JMF	12:0071cb144c7a	5242	mbedtls_cipher_init( &transform->cipher_ctx_enc );
JMF	12:0071cb144c7a	5243	mbedtls_cipher_init( &transform->cipher_ctx_dec );
JMF	12:0071cb144c7a	5244
JMF	12:0071cb144c7a	5245	mbedtls_md_init( &transform->md_ctx_enc );
JMF	12:0071cb144c7a	5246	mbedtls_md_init( &transform->md_ctx_dec );
JMF	12:0071cb144c7a	5247	}
JMF	12:0071cb144c7a	5248
JMF	12:0071cb144c7a	5249	void mbedtls_ssl_session_init( mbedtls_ssl_session *session )
JMF	12:0071cb144c7a	5250	{
JMF	12:0071cb144c7a	5251	memset( session, 0, sizeof(mbedtls_ssl_session) );
JMF	12:0071cb144c7a	5252	}
JMF	12:0071cb144c7a	5253
JMF	12:0071cb144c7a	5254	static int ssl_handshake_init( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	5255	{
JMF	12:0071cb144c7a	5256	/* Clear old handshake information if present */
JMF	12:0071cb144c7a	5257	if( ssl->transform_negotiate )
JMF	12:0071cb144c7a	5258	mbedtls_ssl_transform_free( ssl->transform_negotiate );
JMF	12:0071cb144c7a	5259	if( ssl->session_negotiate )
JMF	12:0071cb144c7a	5260	mbedtls_ssl_session_free( ssl->session_negotiate );
JMF	12:0071cb144c7a	5261	if( ssl->handshake )
JMF	12:0071cb144c7a	5262	mbedtls_ssl_handshake_free( ssl->handshake );
JMF	12:0071cb144c7a	5263
JMF	12:0071cb144c7a	5264	/*
JMF	12:0071cb144c7a	5265	* Either the pointers are now NULL or cleared properly and can be freed.
JMF	12:0071cb144c7a	5266	* Now allocate missing structures.
JMF	12:0071cb144c7a	5267	*/
JMF	12:0071cb144c7a	5268	if( ssl->transform_negotiate == NULL )
JMF	12:0071cb144c7a	5269	{
JMF	12:0071cb144c7a	5270	ssl->transform_negotiate = mbedtls_calloc( 1, sizeof(mbedtls_ssl_transform) );
JMF	12:0071cb144c7a	5271	}
JMF	12:0071cb144c7a	5272
JMF	12:0071cb144c7a	5273	if( ssl->session_negotiate == NULL )
JMF	12:0071cb144c7a	5274	{
JMF	12:0071cb144c7a	5275	ssl->session_negotiate = mbedtls_calloc( 1, sizeof(mbedtls_ssl_session) );
JMF	12:0071cb144c7a	5276	}
JMF	12:0071cb144c7a	5277
JMF	12:0071cb144c7a	5278	if( ssl->handshake == NULL )
JMF	12:0071cb144c7a	5279	{
JMF	12:0071cb144c7a	5280	ssl->handshake = mbedtls_calloc( 1, sizeof(mbedtls_ssl_handshake_params) );
JMF	12:0071cb144c7a	5281	}
JMF	12:0071cb144c7a	5282
JMF	12:0071cb144c7a	5283	/* All pointers should exist and can be directly freed without issue */
JMF	12:0071cb144c7a	5284	if( ssl->handshake == NULL \|\|
JMF	12:0071cb144c7a	5285	ssl->transform_negotiate == NULL \|\|
JMF	12:0071cb144c7a	5286	ssl->session_negotiate == NULL )
JMF	12:0071cb144c7a	5287	{
JMF	12:0071cb144c7a	5288	MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc() of ssl sub-contexts failed" ) );
JMF	12:0071cb144c7a	5289
JMF	12:0071cb144c7a	5290	mbedtls_free( ssl->handshake );
JMF	12:0071cb144c7a	5291	mbedtls_free( ssl->transform_negotiate );
JMF	12:0071cb144c7a	5292	mbedtls_free( ssl->session_negotiate );
JMF	12:0071cb144c7a	5293
JMF	12:0071cb144c7a	5294	ssl->handshake = NULL;
JMF	12:0071cb144c7a	5295	ssl->transform_negotiate = NULL;
JMF	12:0071cb144c7a	5296	ssl->session_negotiate = NULL;
JMF	12:0071cb144c7a	5297
JMF	12:0071cb144c7a	5298	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	5299	}
JMF	12:0071cb144c7a	5300
JMF	12:0071cb144c7a	5301	/* Initialize structures */
JMF	12:0071cb144c7a	5302	mbedtls_ssl_session_init( ssl->session_negotiate );
JMF	12:0071cb144c7a	5303	ssl_transform_init( ssl->transform_negotiate );
JMF	12:0071cb144c7a	5304	ssl_handshake_params_init( ssl->handshake );
JMF	12:0071cb144c7a	5305
JMF	12:0071cb144c7a	5306	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	5307	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	5308	{
JMF	12:0071cb144c7a	5309	ssl->handshake->alt_transform_out = ssl->transform_out;
JMF	12:0071cb144c7a	5310
JMF	12:0071cb144c7a	5311	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	5312	ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_PREPARING;
JMF	12:0071cb144c7a	5313	else
JMF	12:0071cb144c7a	5314	ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_WAITING;
JMF	12:0071cb144c7a	5315
JMF	12:0071cb144c7a	5316	ssl_set_timer( ssl, 0 );
JMF	12:0071cb144c7a	5317	}
JMF	12:0071cb144c7a	5318	#endif
JMF	12:0071cb144c7a	5319
JMF	12:0071cb144c7a	5320	return( 0 );
JMF	12:0071cb144c7a	5321	}
JMF	12:0071cb144c7a	5322
JMF	12:0071cb144c7a	5323	#if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	5324	/* Dummy cookie callbacks for defaults */
JMF	12:0071cb144c7a	5325	static int ssl_cookie_write_dummy( void *ctx,
JMF	12:0071cb144c7a	5326	unsigned char *p, unsigned char end,
JMF	12:0071cb144c7a	5327	const unsigned char *cli_id, size_t cli_id_len )
JMF	12:0071cb144c7a	5328	{
JMF	12:0071cb144c7a	5329	((void) ctx);
JMF	12:0071cb144c7a	5330	((void) p);
JMF	12:0071cb144c7a	5331	((void) end);
JMF	12:0071cb144c7a	5332	((void) cli_id);
JMF	12:0071cb144c7a	5333	((void) cli_id_len);
JMF	12:0071cb144c7a	5334
JMF	12:0071cb144c7a	5335	return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
JMF	12:0071cb144c7a	5336	}
JMF	12:0071cb144c7a	5337
JMF	12:0071cb144c7a	5338	static int ssl_cookie_check_dummy( void *ctx,
JMF	12:0071cb144c7a	5339	const unsigned char *cookie, size_t cookie_len,
JMF	12:0071cb144c7a	5340	const unsigned char *cli_id, size_t cli_id_len )
JMF	12:0071cb144c7a	5341	{
JMF	12:0071cb144c7a	5342	((void) ctx);
JMF	12:0071cb144c7a	5343	((void) cookie);
JMF	12:0071cb144c7a	5344	((void) cookie_len);
JMF	12:0071cb144c7a	5345	((void) cli_id);
JMF	12:0071cb144c7a	5346	((void) cli_id_len);
JMF	12:0071cb144c7a	5347
JMF	12:0071cb144c7a	5348	return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
JMF	12:0071cb144c7a	5349	}
JMF	12:0071cb144c7a	5350	#endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY && MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	5351
JMF	12:0071cb144c7a	5352	/*
JMF	12:0071cb144c7a	5353	* Initialize an SSL context
JMF	12:0071cb144c7a	5354	*/
JMF	12:0071cb144c7a	5355	void mbedtls_ssl_init( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	5356	{
JMF	12:0071cb144c7a	5357	memset( ssl, 0, sizeof( mbedtls_ssl_context ) );
JMF	12:0071cb144c7a	5358	}
JMF	12:0071cb144c7a	5359
JMF	12:0071cb144c7a	5360	/*
JMF	12:0071cb144c7a	5361	* Setup an SSL context
JMF	12:0071cb144c7a	5362	*/
JMF	12:0071cb144c7a	5363	int mbedtls_ssl_setup( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	5364	const mbedtls_ssl_config *conf )
JMF	12:0071cb144c7a	5365	{
JMF	12:0071cb144c7a	5366	int ret;
JMF	12:0071cb144c7a	5367	const size_t len = MBEDTLS_SSL_BUFFER_LEN;
JMF	12:0071cb144c7a	5368
JMF	12:0071cb144c7a	5369	ssl->conf = conf;
JMF	12:0071cb144c7a	5370
JMF	12:0071cb144c7a	5371	/*
JMF	12:0071cb144c7a	5372	* Prepare base structures
JMF	12:0071cb144c7a	5373	*/
JMF	12:0071cb144c7a	5374	if( ( ssl-> in_buf = mbedtls_calloc( 1, len ) ) == NULL \|\|
JMF	12:0071cb144c7a	5375	( ssl->out_buf = mbedtls_calloc( 1, len ) ) == NULL )
JMF	12:0071cb144c7a	5376	{
JMF	12:0071cb144c7a	5377	MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed", len ) );
JMF	12:0071cb144c7a	5378	mbedtls_free( ssl->in_buf );
JMF	12:0071cb144c7a	5379	ssl->in_buf = NULL;
JMF	12:0071cb144c7a	5380	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	5381	}
JMF	12:0071cb144c7a	5382
JMF	12:0071cb144c7a	5383	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	5384	if( conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	5385	{
JMF	12:0071cb144c7a	5386	ssl->out_hdr = ssl->out_buf;
JMF	12:0071cb144c7a	5387	ssl->out_ctr = ssl->out_buf + 3;
JMF	12:0071cb144c7a	5388	ssl->out_len = ssl->out_buf + 11;
JMF	12:0071cb144c7a	5389	ssl->out_iv = ssl->out_buf + 13;
JMF	12:0071cb144c7a	5390	ssl->out_msg = ssl->out_buf + 13;
JMF	12:0071cb144c7a	5391
JMF	12:0071cb144c7a	5392	ssl->in_hdr = ssl->in_buf;
JMF	12:0071cb144c7a	5393	ssl->in_ctr = ssl->in_buf + 3;
JMF	12:0071cb144c7a	5394	ssl->in_len = ssl->in_buf + 11;
JMF	12:0071cb144c7a	5395	ssl->in_iv = ssl->in_buf + 13;
JMF	12:0071cb144c7a	5396	ssl->in_msg = ssl->in_buf + 13;
JMF	12:0071cb144c7a	5397	}
JMF	12:0071cb144c7a	5398	else
JMF	12:0071cb144c7a	5399	#endif
JMF	12:0071cb144c7a	5400	{
JMF	12:0071cb144c7a	5401	ssl->out_ctr = ssl->out_buf;
JMF	12:0071cb144c7a	5402	ssl->out_hdr = ssl->out_buf + 8;
JMF	12:0071cb144c7a	5403	ssl->out_len = ssl->out_buf + 11;
JMF	12:0071cb144c7a	5404	ssl->out_iv = ssl->out_buf + 13;
JMF	12:0071cb144c7a	5405	ssl->out_msg = ssl->out_buf + 13;
JMF	12:0071cb144c7a	5406
JMF	12:0071cb144c7a	5407	ssl->in_ctr = ssl->in_buf;
JMF	12:0071cb144c7a	5408	ssl->in_hdr = ssl->in_buf + 8;
JMF	12:0071cb144c7a	5409	ssl->in_len = ssl->in_buf + 11;
JMF	12:0071cb144c7a	5410	ssl->in_iv = ssl->in_buf + 13;
JMF	12:0071cb144c7a	5411	ssl->in_msg = ssl->in_buf + 13;
JMF	12:0071cb144c7a	5412	}
JMF	12:0071cb144c7a	5413
JMF	12:0071cb144c7a	5414	if( ( ret = ssl_handshake_init( ssl ) ) != 0 )
JMF	12:0071cb144c7a	5415	return( ret );
JMF	12:0071cb144c7a	5416
JMF	12:0071cb144c7a	5417	return( 0 );
JMF	12:0071cb144c7a	5418	}
JMF	12:0071cb144c7a	5419
JMF	12:0071cb144c7a	5420	/*
JMF	12:0071cb144c7a	5421	* Reset an initialized and used SSL context for re-use while retaining
JMF	12:0071cb144c7a	5422	* all application-set variables, function pointers and data.
JMF	12:0071cb144c7a	5423	*
JMF	12:0071cb144c7a	5424	* If partial is non-zero, keep data in the input buffer and client ID.
JMF	12:0071cb144c7a	5425	* (Use when a DTLS client reconnects from the same port.)
JMF	12:0071cb144c7a	5426	*/
JMF	12:0071cb144c7a	5427	static int ssl_session_reset_int( mbedtls_ssl_context *ssl, int partial )
JMF	12:0071cb144c7a	5428	{
JMF	12:0071cb144c7a	5429	int ret;
JMF	12:0071cb144c7a	5430
JMF	12:0071cb144c7a	5431	ssl->state = MBEDTLS_SSL_HELLO_REQUEST;
JMF	12:0071cb144c7a	5432
JMF	12:0071cb144c7a	5433	/* Cancel any possibly running timer */
JMF	12:0071cb144c7a	5434	ssl_set_timer( ssl, 0 );
JMF	12:0071cb144c7a	5435
JMF	12:0071cb144c7a	5436	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	5437	ssl->renego_status = MBEDTLS_SSL_INITIAL_HANDSHAKE;
JMF	12:0071cb144c7a	5438	ssl->renego_records_seen = 0;
JMF	12:0071cb144c7a	5439
JMF	12:0071cb144c7a	5440	ssl->verify_data_len = 0;
JMF	12:0071cb144c7a	5441	memset( ssl->own_verify_data, 0, MBEDTLS_SSL_VERIFY_DATA_MAX_LEN );
JMF	12:0071cb144c7a	5442	memset( ssl->peer_verify_data, 0, MBEDTLS_SSL_VERIFY_DATA_MAX_LEN );
JMF	12:0071cb144c7a	5443	#endif
JMF	12:0071cb144c7a	5444	ssl->secure_renegotiation = MBEDTLS_SSL_LEGACY_RENEGOTIATION;
JMF	12:0071cb144c7a	5445
JMF	12:0071cb144c7a	5446	ssl->in_offt = NULL;
JMF	12:0071cb144c7a	5447
JMF	12:0071cb144c7a	5448	ssl->in_msg = ssl->in_buf + 13;
JMF	12:0071cb144c7a	5449	ssl->in_msgtype = 0;
JMF	12:0071cb144c7a	5450	ssl->in_msglen = 0;
JMF	12:0071cb144c7a	5451	if( partial == 0 )
JMF	12:0071cb144c7a	5452	ssl->in_left = 0;
JMF	12:0071cb144c7a	5453	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	5454	ssl->next_record_offset = 0;
JMF	12:0071cb144c7a	5455	ssl->in_epoch = 0;
JMF	12:0071cb144c7a	5456	#endif
JMF	12:0071cb144c7a	5457	#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
JMF	12:0071cb144c7a	5458	ssl_dtls_replay_reset( ssl );
JMF	12:0071cb144c7a	5459	#endif
JMF	12:0071cb144c7a	5460
JMF	12:0071cb144c7a	5461	ssl->in_hslen = 0;
JMF	12:0071cb144c7a	5462	ssl->nb_zero = 0;
JMF	12:0071cb144c7a	5463	ssl->record_read = 0;
JMF	12:0071cb144c7a	5464
JMF	12:0071cb144c7a	5465	ssl->out_msg = ssl->out_buf + 13;
JMF	12:0071cb144c7a	5466	ssl->out_msgtype = 0;
JMF	12:0071cb144c7a	5467	ssl->out_msglen = 0;
JMF	12:0071cb144c7a	5468	ssl->out_left = 0;
JMF	12:0071cb144c7a	5469	#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
JMF	12:0071cb144c7a	5470	if( ssl->split_done != MBEDTLS_SSL_CBC_RECORD_SPLITTING_DISABLED )
JMF	12:0071cb144c7a	5471	ssl->split_done = 0;
JMF	12:0071cb144c7a	5472	#endif
JMF	12:0071cb144c7a	5473
JMF	12:0071cb144c7a	5474	ssl->transform_in = NULL;
JMF	12:0071cb144c7a	5475	ssl->transform_out = NULL;
JMF	12:0071cb144c7a	5476
JMF	12:0071cb144c7a	5477	memset( ssl->out_buf, 0, MBEDTLS_SSL_BUFFER_LEN );
JMF	12:0071cb144c7a	5478	if( partial == 0 )
JMF	12:0071cb144c7a	5479	memset( ssl->in_buf, 0, MBEDTLS_SSL_BUFFER_LEN );
JMF	12:0071cb144c7a	5480
JMF	12:0071cb144c7a	5481	#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
JMF	12:0071cb144c7a	5482	if( mbedtls_ssl_hw_record_reset != NULL )
JMF	12:0071cb144c7a	5483	{
JMF	12:0071cb144c7a	5484	MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_reset()" ) );
JMF	12:0071cb144c7a	5485	if( ( ret = mbedtls_ssl_hw_record_reset( ssl ) ) != 0 )
JMF	12:0071cb144c7a	5486	{
JMF	12:0071cb144c7a	5487	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_reset", ret );
JMF	12:0071cb144c7a	5488	return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED );
JMF	12:0071cb144c7a	5489	}
JMF	12:0071cb144c7a	5490	}
JMF	12:0071cb144c7a	5491	#endif
JMF	12:0071cb144c7a	5492
JMF	12:0071cb144c7a	5493	if( ssl->transform )
JMF	12:0071cb144c7a	5494	{
JMF	12:0071cb144c7a	5495	mbedtls_ssl_transform_free( ssl->transform );
JMF	12:0071cb144c7a	5496	mbedtls_free( ssl->transform );
JMF	12:0071cb144c7a	5497	ssl->transform = NULL;
JMF	12:0071cb144c7a	5498	}
JMF	12:0071cb144c7a	5499
JMF	12:0071cb144c7a	5500	if( ssl->session )
JMF	12:0071cb144c7a	5501	{
JMF	12:0071cb144c7a	5502	mbedtls_ssl_session_free( ssl->session );
JMF	12:0071cb144c7a	5503	mbedtls_free( ssl->session );
JMF	12:0071cb144c7a	5504	ssl->session = NULL;
JMF	12:0071cb144c7a	5505	}
JMF	12:0071cb144c7a	5506
JMF	12:0071cb144c7a	5507	#if defined(MBEDTLS_SSL_ALPN)
JMF	12:0071cb144c7a	5508	ssl->alpn_chosen = NULL;
JMF	12:0071cb144c7a	5509	#endif
JMF	12:0071cb144c7a	5510
JMF	12:0071cb144c7a	5511	#if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	5512	if( partial == 0 )
JMF	12:0071cb144c7a	5513	{
JMF	12:0071cb144c7a	5514	mbedtls_free( ssl->cli_id );
JMF	12:0071cb144c7a	5515	ssl->cli_id = NULL;
JMF	12:0071cb144c7a	5516	ssl->cli_id_len = 0;
JMF	12:0071cb144c7a	5517	}
JMF	12:0071cb144c7a	5518	#endif
JMF	12:0071cb144c7a	5519
JMF	12:0071cb144c7a	5520	if( ( ret = ssl_handshake_init( ssl ) ) != 0 )
JMF	12:0071cb144c7a	5521	return( ret );
JMF	12:0071cb144c7a	5522
JMF	12:0071cb144c7a	5523	return( 0 );
JMF	12:0071cb144c7a	5524	}
JMF	12:0071cb144c7a	5525
JMF	12:0071cb144c7a	5526	/*
JMF	12:0071cb144c7a	5527	* Reset an initialized and used SSL context for re-use while retaining
JMF	12:0071cb144c7a	5528	* all application-set variables, function pointers and data.
JMF	12:0071cb144c7a	5529	*/
JMF	12:0071cb144c7a	5530	int mbedtls_ssl_session_reset( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	5531	{
JMF	12:0071cb144c7a	5532	return( ssl_session_reset_int( ssl, 0 ) );
JMF	12:0071cb144c7a	5533	}
JMF	12:0071cb144c7a	5534
JMF	12:0071cb144c7a	5535	/*
JMF	12:0071cb144c7a	5536	* SSL set accessors
JMF	12:0071cb144c7a	5537	*/
JMF	12:0071cb144c7a	5538	void mbedtls_ssl_conf_endpoint( mbedtls_ssl_config *conf, int endpoint )
JMF	12:0071cb144c7a	5539	{
JMF	12:0071cb144c7a	5540	conf->endpoint = endpoint;
JMF	12:0071cb144c7a	5541	}
JMF	12:0071cb144c7a	5542
JMF	12:0071cb144c7a	5543	void mbedtls_ssl_conf_transport( mbedtls_ssl_config *conf, int transport )
JMF	12:0071cb144c7a	5544	{
JMF	12:0071cb144c7a	5545	conf->transport = transport;
JMF	12:0071cb144c7a	5546	}
JMF	12:0071cb144c7a	5547
JMF	12:0071cb144c7a	5548	#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
JMF	12:0071cb144c7a	5549	void mbedtls_ssl_conf_dtls_anti_replay( mbedtls_ssl_config *conf, char mode )
JMF	12:0071cb144c7a	5550	{
JMF	12:0071cb144c7a	5551	conf->anti_replay = mode;
JMF	12:0071cb144c7a	5552	}
JMF	12:0071cb144c7a	5553	#endif
JMF	12:0071cb144c7a	5554
JMF	12:0071cb144c7a	5555	#if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT)
JMF	12:0071cb144c7a	5556	void mbedtls_ssl_conf_dtls_badmac_limit( mbedtls_ssl_config *conf, unsigned limit )
JMF	12:0071cb144c7a	5557	{
JMF	12:0071cb144c7a	5558	conf->badmac_limit = limit;
JMF	12:0071cb144c7a	5559	}
JMF	12:0071cb144c7a	5560	#endif
JMF	12:0071cb144c7a	5561
JMF	12:0071cb144c7a	5562	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	5563	void mbedtls_ssl_conf_handshake_timeout( mbedtls_ssl_config *conf, uint32_t min, uint32_t max )
JMF	12:0071cb144c7a	5564	{
JMF	12:0071cb144c7a	5565	conf->hs_timeout_min = min;
JMF	12:0071cb144c7a	5566	conf->hs_timeout_max = max;
JMF	12:0071cb144c7a	5567	}
JMF	12:0071cb144c7a	5568	#endif
JMF	12:0071cb144c7a	5569
JMF	12:0071cb144c7a	5570	void mbedtls_ssl_conf_authmode( mbedtls_ssl_config *conf, int authmode )
JMF	12:0071cb144c7a	5571	{
JMF	12:0071cb144c7a	5572	conf->authmode = authmode;
JMF	12:0071cb144c7a	5573	}
JMF	12:0071cb144c7a	5574
JMF	12:0071cb144c7a	5575	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	5576	void mbedtls_ssl_conf_verify( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5577	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
JMF	12:0071cb144c7a	5578	void *p_vrfy )
JMF	12:0071cb144c7a	5579	{
JMF	12:0071cb144c7a	5580	conf->f_vrfy = f_vrfy;
JMF	12:0071cb144c7a	5581	conf->p_vrfy = p_vrfy;
JMF	12:0071cb144c7a	5582	}
JMF	12:0071cb144c7a	5583	#endif /* MBEDTLS_X509_CRT_PARSE_C */
JMF	12:0071cb144c7a	5584
JMF	12:0071cb144c7a	5585	void mbedtls_ssl_conf_rng( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5586	int (f_rng)(void , unsigned char *, size_t),
JMF	12:0071cb144c7a	5587	void *p_rng )
JMF	12:0071cb144c7a	5588	{
JMF	12:0071cb144c7a	5589	conf->f_rng = f_rng;
JMF	12:0071cb144c7a	5590	conf->p_rng = p_rng;
JMF	12:0071cb144c7a	5591	}
JMF	12:0071cb144c7a	5592
JMF	12:0071cb144c7a	5593	void mbedtls_ssl_conf_dbg( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5594	void (f_dbg)(void , int, const char , int, const char ),
JMF	12:0071cb144c7a	5595	void *p_dbg )
JMF	12:0071cb144c7a	5596	{
JMF	12:0071cb144c7a	5597	conf->f_dbg = f_dbg;
JMF	12:0071cb144c7a	5598	conf->p_dbg = p_dbg;
JMF	12:0071cb144c7a	5599	}
JMF	12:0071cb144c7a	5600
JMF	12:0071cb144c7a	5601	void mbedtls_ssl_set_bio( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	5602	void *p_bio,
JMF	12:0071cb144c7a	5603	mbedtls_ssl_send_t *f_send,
JMF	12:0071cb144c7a	5604	mbedtls_ssl_recv_t *f_recv,
JMF	12:0071cb144c7a	5605	mbedtls_ssl_recv_timeout_t *f_recv_timeout )
JMF	12:0071cb144c7a	5606	{
JMF	12:0071cb144c7a	5607	ssl->p_bio = p_bio;
JMF	12:0071cb144c7a	5608	ssl->f_send = f_send;
JMF	12:0071cb144c7a	5609	ssl->f_recv = f_recv;
JMF	12:0071cb144c7a	5610	ssl->f_recv_timeout = f_recv_timeout;
JMF	12:0071cb144c7a	5611	}
JMF	12:0071cb144c7a	5612
JMF	12:0071cb144c7a	5613	void mbedtls_ssl_conf_read_timeout( mbedtls_ssl_config *conf, uint32_t timeout )
JMF	12:0071cb144c7a	5614	{
JMF	12:0071cb144c7a	5615	conf->read_timeout = timeout;
JMF	12:0071cb144c7a	5616	}
JMF	12:0071cb144c7a	5617
JMF	12:0071cb144c7a	5618	void mbedtls_ssl_set_timer_cb( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	5619	void *p_timer,
JMF	12:0071cb144c7a	5620	mbedtls_ssl_set_timer_t *f_set_timer,
JMF	12:0071cb144c7a	5621	mbedtls_ssl_get_timer_t *f_get_timer )
JMF	12:0071cb144c7a	5622	{
JMF	12:0071cb144c7a	5623	ssl->p_timer = p_timer;
JMF	12:0071cb144c7a	5624	ssl->f_set_timer = f_set_timer;
JMF	12:0071cb144c7a	5625	ssl->f_get_timer = f_get_timer;
JMF	12:0071cb144c7a	5626
JMF	12:0071cb144c7a	5627	/* Make sure we start with no timer running */
JMF	12:0071cb144c7a	5628	ssl_set_timer( ssl, 0 );
JMF	12:0071cb144c7a	5629	}
JMF	12:0071cb144c7a	5630
JMF	12:0071cb144c7a	5631	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	5632	void mbedtls_ssl_conf_session_cache( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5633	void *p_cache,
JMF	12:0071cb144c7a	5634	int (f_get_cache)(void , mbedtls_ssl_session *),
JMF	12:0071cb144c7a	5635	int (f_set_cache)(void , const mbedtls_ssl_session *) )
JMF	12:0071cb144c7a	5636	{
JMF	12:0071cb144c7a	5637	conf->p_cache = p_cache;
JMF	12:0071cb144c7a	5638	conf->f_get_cache = f_get_cache;
JMF	12:0071cb144c7a	5639	conf->f_set_cache = f_set_cache;
JMF	12:0071cb144c7a	5640	}
JMF	12:0071cb144c7a	5641	#endif /* MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	5642
JMF	12:0071cb144c7a	5643	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	5644	int mbedtls_ssl_set_session( mbedtls_ssl_context ssl, const mbedtls_ssl_session session )
JMF	12:0071cb144c7a	5645	{
JMF	12:0071cb144c7a	5646	int ret;
JMF	12:0071cb144c7a	5647
JMF	12:0071cb144c7a	5648	if( ssl == NULL \|\|
JMF	12:0071cb144c7a	5649	session == NULL \|\|
JMF	12:0071cb144c7a	5650	ssl->session_negotiate == NULL \|\|
JMF	12:0071cb144c7a	5651	ssl->conf->endpoint != MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	5652	{
JMF	12:0071cb144c7a	5653	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5654	}
JMF	12:0071cb144c7a	5655
JMF	12:0071cb144c7a	5656	if( ( ret = ssl_session_copy( ssl->session_negotiate, session ) ) != 0 )
JMF	12:0071cb144c7a	5657	return( ret );
JMF	12:0071cb144c7a	5658
JMF	12:0071cb144c7a	5659	ssl->handshake->resume = 1;
JMF	12:0071cb144c7a	5660
JMF	12:0071cb144c7a	5661	return( 0 );
JMF	12:0071cb144c7a	5662	}
JMF	12:0071cb144c7a	5663	#endif /* MBEDTLS_SSL_CLI_C */
JMF	12:0071cb144c7a	5664
JMF	12:0071cb144c7a	5665	void mbedtls_ssl_conf_ciphersuites( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5666	const int *ciphersuites )
JMF	12:0071cb144c7a	5667	{
JMF	12:0071cb144c7a	5668	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_0] = ciphersuites;
JMF	12:0071cb144c7a	5669	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_1] = ciphersuites;
JMF	12:0071cb144c7a	5670	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_2] = ciphersuites;
JMF	12:0071cb144c7a	5671	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_3] = ciphersuites;
JMF	12:0071cb144c7a	5672	}
JMF	12:0071cb144c7a	5673
JMF	12:0071cb144c7a	5674	void mbedtls_ssl_conf_ciphersuites_for_version( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5675	const int *ciphersuites,
JMF	12:0071cb144c7a	5676	int major, int minor )
JMF	12:0071cb144c7a	5677	{
JMF	12:0071cb144c7a	5678	if( major != MBEDTLS_SSL_MAJOR_VERSION_3 )
JMF	12:0071cb144c7a	5679	return;
JMF	12:0071cb144c7a	5680
JMF	12:0071cb144c7a	5681	if( minor < MBEDTLS_SSL_MINOR_VERSION_0 \|\| minor > MBEDTLS_SSL_MINOR_VERSION_3 )
JMF	12:0071cb144c7a	5682	return;
JMF	12:0071cb144c7a	5683
JMF	12:0071cb144c7a	5684	conf->ciphersuite_list[minor] = ciphersuites;
JMF	12:0071cb144c7a	5685	}
JMF	12:0071cb144c7a	5686
JMF	12:0071cb144c7a	5687	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	5688	void mbedtls_ssl_conf_cert_profile( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5689	const mbedtls_x509_crt_profile *profile )
JMF	12:0071cb144c7a	5690	{
JMF	12:0071cb144c7a	5691	conf->cert_profile = profile;
JMF	12:0071cb144c7a	5692	}
JMF	12:0071cb144c7a	5693
JMF	12:0071cb144c7a	5694	/* Append a new keycert entry to a (possibly empty) list */
JMF	12:0071cb144c7a	5695	static int ssl_append_key_cert( mbedtls_ssl_key_cert **head,
JMF	12:0071cb144c7a	5696	mbedtls_x509_crt *cert,
JMF	12:0071cb144c7a	5697	mbedtls_pk_context *key )
JMF	12:0071cb144c7a	5698	{
JMF	12:0071cb144c7a	5699	mbedtls_ssl_key_cert *new;
JMF	12:0071cb144c7a	5700
JMF	12:0071cb144c7a	5701	new = mbedtls_calloc( 1, sizeof( mbedtls_ssl_key_cert ) );
JMF	12:0071cb144c7a	5702	if( new == NULL )
JMF	12:0071cb144c7a	5703	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	5704
JMF	12:0071cb144c7a	5705	new->cert = cert;
JMF	12:0071cb144c7a	5706	new->key = key;
JMF	12:0071cb144c7a	5707	new->next = NULL;
JMF	12:0071cb144c7a	5708
JMF	12:0071cb144c7a	5709	/* Update head is the list was null, else add to the end */
JMF	12:0071cb144c7a	5710	if( *head == NULL )
JMF	12:0071cb144c7a	5711	{
JMF	12:0071cb144c7a	5712	*head = new;
JMF	12:0071cb144c7a	5713	}
JMF	12:0071cb144c7a	5714	else
JMF	12:0071cb144c7a	5715	{
JMF	12:0071cb144c7a	5716	mbedtls_ssl_key_cert cur = head;
JMF	12:0071cb144c7a	5717	while( cur->next != NULL )
JMF	12:0071cb144c7a	5718	cur = cur->next;
JMF	12:0071cb144c7a	5719	cur->next = new;
JMF	12:0071cb144c7a	5720	}
JMF	12:0071cb144c7a	5721
JMF	12:0071cb144c7a	5722	return( 0 );
JMF	12:0071cb144c7a	5723	}
JMF	12:0071cb144c7a	5724
JMF	12:0071cb144c7a	5725	int mbedtls_ssl_conf_own_cert( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5726	mbedtls_x509_crt *own_cert,
JMF	12:0071cb144c7a	5727	mbedtls_pk_context *pk_key )
JMF	12:0071cb144c7a	5728	{
JMF	12:0071cb144c7a	5729	return( ssl_append_key_cert( &conf->key_cert, own_cert, pk_key ) );
JMF	12:0071cb144c7a	5730	}
JMF	12:0071cb144c7a	5731
JMF	12:0071cb144c7a	5732	void mbedtls_ssl_conf_ca_chain( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5733	mbedtls_x509_crt *ca_chain,
JMF	12:0071cb144c7a	5734	mbedtls_x509_crl *ca_crl )
JMF	12:0071cb144c7a	5735	{
JMF	12:0071cb144c7a	5736	conf->ca_chain = ca_chain;
JMF	12:0071cb144c7a	5737	conf->ca_crl = ca_crl;
JMF	12:0071cb144c7a	5738	}
JMF	12:0071cb144c7a	5739	#endif /* MBEDTLS_X509_CRT_PARSE_C */
JMF	12:0071cb144c7a	5740
JMF	12:0071cb144c7a	5741	#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
JMF	12:0071cb144c7a	5742	int mbedtls_ssl_set_hs_own_cert( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	5743	mbedtls_x509_crt *own_cert,
JMF	12:0071cb144c7a	5744	mbedtls_pk_context *pk_key )
JMF	12:0071cb144c7a	5745	{
JMF	12:0071cb144c7a	5746	return( ssl_append_key_cert( &ssl->handshake->sni_key_cert,
JMF	12:0071cb144c7a	5747	own_cert, pk_key ) );
JMF	12:0071cb144c7a	5748	}
JMF	12:0071cb144c7a	5749
JMF	12:0071cb144c7a	5750	void mbedtls_ssl_set_hs_ca_chain( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	5751	mbedtls_x509_crt *ca_chain,
JMF	12:0071cb144c7a	5752	mbedtls_x509_crl *ca_crl )
JMF	12:0071cb144c7a	5753	{
JMF	12:0071cb144c7a	5754	ssl->handshake->sni_ca_chain = ca_chain;
JMF	12:0071cb144c7a	5755	ssl->handshake->sni_ca_crl = ca_crl;
JMF	12:0071cb144c7a	5756	}
JMF	12:0071cb144c7a	5757
JMF	12:0071cb144c7a	5758	void mbedtls_ssl_set_hs_authmode( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	5759	int authmode )
JMF	12:0071cb144c7a	5760	{
JMF	12:0071cb144c7a	5761	ssl->handshake->sni_authmode = authmode;
JMF	12:0071cb144c7a	5762	}
JMF	12:0071cb144c7a	5763	#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
JMF	12:0071cb144c7a	5764
JMF	12:0071cb144c7a	5765	#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
JMF	12:0071cb144c7a	5766	/*
JMF	12:0071cb144c7a	5767	* Set EC J-PAKE password for current handshake
JMF	12:0071cb144c7a	5768	*/
JMF	12:0071cb144c7a	5769	int mbedtls_ssl_set_hs_ecjpake_password( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	5770	const unsigned char *pw,
JMF	12:0071cb144c7a	5771	size_t pw_len )
JMF	12:0071cb144c7a	5772	{
JMF	12:0071cb144c7a	5773	mbedtls_ecjpake_role role;
JMF	12:0071cb144c7a	5774
JMF	12:0071cb144c7a	5775	if( ssl->handshake == NULL \|\| ssl->conf == NULL )
JMF	12:0071cb144c7a	5776	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5777
JMF	12:0071cb144c7a	5778	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	5779	role = MBEDTLS_ECJPAKE_SERVER;
JMF	12:0071cb144c7a	5780	else
JMF	12:0071cb144c7a	5781	role = MBEDTLS_ECJPAKE_CLIENT;
JMF	12:0071cb144c7a	5782
JMF	12:0071cb144c7a	5783	return( mbedtls_ecjpake_setup( &ssl->handshake->ecjpake_ctx,
JMF	12:0071cb144c7a	5784	role,
JMF	12:0071cb144c7a	5785	MBEDTLS_MD_SHA256,
JMF	12:0071cb144c7a	5786	MBEDTLS_ECP_DP_SECP256R1,
JMF	12:0071cb144c7a	5787	pw, pw_len ) );
JMF	12:0071cb144c7a	5788	}
JMF	12:0071cb144c7a	5789	#endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
JMF	12:0071cb144c7a	5790
JMF	12:0071cb144c7a	5791	#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
JMF	12:0071cb144c7a	5792	int mbedtls_ssl_conf_psk( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5793	const unsigned char *psk, size_t psk_len,
JMF	12:0071cb144c7a	5794	const unsigned char *psk_identity, size_t psk_identity_len )
JMF	12:0071cb144c7a	5795	{
JMF	12:0071cb144c7a	5796	if( psk == NULL \|\| psk_identity == NULL )
JMF	12:0071cb144c7a	5797	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5798
JMF	12:0071cb144c7a	5799	if( psk_len > MBEDTLS_PSK_MAX_LEN )
JMF	12:0071cb144c7a	5800	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5801
JMF	12:0071cb144c7a	5802	/* Identity len will be encoded on two bytes */
JMF	12:0071cb144c7a	5803	if( ( psk_identity_len >> 16 ) != 0 \|\|
JMF	12:0071cb144c7a	5804	psk_identity_len > MBEDTLS_SSL_MAX_CONTENT_LEN )
JMF	12:0071cb144c7a	5805	{
JMF	12:0071cb144c7a	5806	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5807	}
JMF	12:0071cb144c7a	5808
JMF	12:0071cb144c7a	5809	if( conf->psk != NULL \|\| conf->psk_identity != NULL )
JMF	12:0071cb144c7a	5810	{
JMF	12:0071cb144c7a	5811	mbedtls_free( conf->psk );
JMF	12:0071cb144c7a	5812	mbedtls_free( conf->psk_identity );
JMF	12:0071cb144c7a	5813	conf->psk = NULL;
JMF	12:0071cb144c7a	5814	conf->psk_identity = NULL;
JMF	12:0071cb144c7a	5815	}
JMF	12:0071cb144c7a	5816
JMF	12:0071cb144c7a	5817	if( ( conf->psk = mbedtls_calloc( 1, psk_len ) ) == NULL \|\|
JMF	12:0071cb144c7a	5818	( conf->psk_identity = mbedtls_calloc( 1, psk_identity_len ) ) == NULL )
JMF	12:0071cb144c7a	5819	{
JMF	12:0071cb144c7a	5820	mbedtls_free( conf->psk );
JMF	12:0071cb144c7a	5821	mbedtls_free( conf->psk_identity );
JMF	12:0071cb144c7a	5822	conf->psk = NULL;
JMF	12:0071cb144c7a	5823	conf->psk_identity = NULL;
JMF	12:0071cb144c7a	5824	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	5825	}
JMF	12:0071cb144c7a	5826
JMF	12:0071cb144c7a	5827	conf->psk_len = psk_len;
JMF	12:0071cb144c7a	5828	conf->psk_identity_len = psk_identity_len;
JMF	12:0071cb144c7a	5829
JMF	12:0071cb144c7a	5830	memcpy( conf->psk, psk, conf->psk_len );
JMF	12:0071cb144c7a	5831	memcpy( conf->psk_identity, psk_identity, conf->psk_identity_len );
JMF	12:0071cb144c7a	5832
JMF	12:0071cb144c7a	5833	return( 0 );
JMF	12:0071cb144c7a	5834	}
JMF	12:0071cb144c7a	5835
JMF	12:0071cb144c7a	5836	int mbedtls_ssl_set_hs_psk( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	5837	const unsigned char *psk, size_t psk_len )
JMF	12:0071cb144c7a	5838	{
JMF	12:0071cb144c7a	5839	if( psk == NULL \|\| ssl->handshake == NULL )
JMF	12:0071cb144c7a	5840	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5841
JMF	12:0071cb144c7a	5842	if( psk_len > MBEDTLS_PSK_MAX_LEN )
JMF	12:0071cb144c7a	5843	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5844
JMF	12:0071cb144c7a	5845	if( ssl->handshake->psk != NULL )
JMF	12:0071cb144c7a	5846	mbedtls_free( ssl->handshake->psk );
JMF	12:0071cb144c7a	5847
JMF	12:0071cb144c7a	5848	if( ( ssl->handshake->psk = mbedtls_calloc( 1, psk_len ) ) == NULL )
JMF	12:0071cb144c7a	5849	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	5850
JMF	12:0071cb144c7a	5851	ssl->handshake->psk_len = psk_len;
JMF	12:0071cb144c7a	5852	memcpy( ssl->handshake->psk, psk, ssl->handshake->psk_len );
JMF	12:0071cb144c7a	5853
JMF	12:0071cb144c7a	5854	return( 0 );
JMF	12:0071cb144c7a	5855	}
JMF	12:0071cb144c7a	5856
JMF	12:0071cb144c7a	5857	void mbedtls_ssl_conf_psk_cb( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5858	int (f_psk)(void , mbedtls_ssl_context , const unsigned char ,
JMF	12:0071cb144c7a	5859	size_t),
JMF	12:0071cb144c7a	5860	void *p_psk )
JMF	12:0071cb144c7a	5861	{
JMF	12:0071cb144c7a	5862	conf->f_psk = f_psk;
JMF	12:0071cb144c7a	5863	conf->p_psk = p_psk;
JMF	12:0071cb144c7a	5864	}
JMF	12:0071cb144c7a	5865	#endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */
JMF	12:0071cb144c7a	5866
JMF	12:0071cb144c7a	5867	#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	5868	int mbedtls_ssl_conf_dh_param( mbedtls_ssl_config conf, const char dhm_P, const char *dhm_G )
JMF	12:0071cb144c7a	5869	{
JMF	12:0071cb144c7a	5870	int ret;
JMF	12:0071cb144c7a	5871
JMF	12:0071cb144c7a	5872	if( ( ret = mbedtls_mpi_read_string( &conf->dhm_P, 16, dhm_P ) ) != 0 \|\|
JMF	12:0071cb144c7a	5873	( ret = mbedtls_mpi_read_string( &conf->dhm_G, 16, dhm_G ) ) != 0 )
JMF	12:0071cb144c7a	5874	{
JMF	12:0071cb144c7a	5875	mbedtls_mpi_free( &conf->dhm_P );
JMF	12:0071cb144c7a	5876	mbedtls_mpi_free( &conf->dhm_G );
JMF	12:0071cb144c7a	5877	return( ret );
JMF	12:0071cb144c7a	5878	}
JMF	12:0071cb144c7a	5879
JMF	12:0071cb144c7a	5880	return( 0 );
JMF	12:0071cb144c7a	5881	}
JMF	12:0071cb144c7a	5882
JMF	12:0071cb144c7a	5883	int mbedtls_ssl_conf_dh_param_ctx( mbedtls_ssl_config conf, mbedtls_dhm_context dhm_ctx )
JMF	12:0071cb144c7a	5884	{
JMF	12:0071cb144c7a	5885	int ret;
JMF	12:0071cb144c7a	5886
JMF	12:0071cb144c7a	5887	if( ( ret = mbedtls_mpi_copy( &conf->dhm_P, &dhm_ctx->P ) ) != 0 \|\|
JMF	12:0071cb144c7a	5888	( ret = mbedtls_mpi_copy( &conf->dhm_G, &dhm_ctx->G ) ) != 0 )
JMF	12:0071cb144c7a	5889	{
JMF	12:0071cb144c7a	5890	mbedtls_mpi_free( &conf->dhm_P );
JMF	12:0071cb144c7a	5891	mbedtls_mpi_free( &conf->dhm_G );
JMF	12:0071cb144c7a	5892	return( ret );
JMF	12:0071cb144c7a	5893	}
JMF	12:0071cb144c7a	5894
JMF	12:0071cb144c7a	5895	return( 0 );
JMF	12:0071cb144c7a	5896	}
JMF	12:0071cb144c7a	5897	#endif /* MBEDTLS_DHM_C && MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	5898
JMF	12:0071cb144c7a	5899	#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	5900	/*
JMF	12:0071cb144c7a	5901	* Set the minimum length for Diffie-Hellman parameters
JMF	12:0071cb144c7a	5902	*/
JMF	12:0071cb144c7a	5903	void mbedtls_ssl_conf_dhm_min_bitlen( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5904	unsigned int bitlen )
JMF	12:0071cb144c7a	5905	{
JMF	12:0071cb144c7a	5906	conf->dhm_min_bitlen = bitlen;
JMF	12:0071cb144c7a	5907	}
JMF	12:0071cb144c7a	5908	#endif /* MBEDTLS_DHM_C && MBEDTLS_SSL_CLI_C */
JMF	12:0071cb144c7a	5909
JMF	12:0071cb144c7a	5910	#if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED)
JMF	12:0071cb144c7a	5911	/*
JMF	12:0071cb144c7a	5912	* Set allowed/preferred hashes for handshake signatures
JMF	12:0071cb144c7a	5913	*/
JMF	12:0071cb144c7a	5914	void mbedtls_ssl_conf_sig_hashes( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5915	const int *hashes )
JMF	12:0071cb144c7a	5916	{
JMF	12:0071cb144c7a	5917	conf->sig_hashes = hashes;
JMF	12:0071cb144c7a	5918	}
JMF	12:0071cb144c7a	5919	#endif
JMF	12:0071cb144c7a	5920
JMF	12:0071cb144c7a	5921	#if defined(MBEDTLS_ECP_C)
JMF	12:0071cb144c7a	5922	/*
JMF	12:0071cb144c7a	5923	* Set the allowed elliptic curves
JMF	12:0071cb144c7a	5924	*/
JMF	12:0071cb144c7a	5925	void mbedtls_ssl_conf_curves( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5926	const mbedtls_ecp_group_id *curve_list )
JMF	12:0071cb144c7a	5927	{
JMF	12:0071cb144c7a	5928	conf->curve_list = curve_list;
JMF	12:0071cb144c7a	5929	}
JMF	12:0071cb144c7a	5930	#endif
JMF	12:0071cb144c7a	5931
JMF	12:0071cb144c7a	5932	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	5933	int mbedtls_ssl_set_hostname( mbedtls_ssl_context ssl, const char hostname )
JMF	12:0071cb144c7a	5934	{
JMF	12:0071cb144c7a	5935	size_t hostname_len;
JMF	12:0071cb144c7a	5936
JMF	12:0071cb144c7a	5937	if( hostname == NULL )
JMF	12:0071cb144c7a	5938	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5939
JMF	12:0071cb144c7a	5940	hostname_len = strlen( hostname );
JMF	12:0071cb144c7a	5941
JMF	12:0071cb144c7a	5942	if( hostname_len + 1 == 0 )
JMF	12:0071cb144c7a	5943	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5944
JMF	12:0071cb144c7a	5945	if( hostname_len > MBEDTLS_SSL_MAX_HOST_NAME_LEN )
JMF	12:0071cb144c7a	5946	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5947
JMF	12:0071cb144c7a	5948	ssl->hostname = mbedtls_calloc( 1, hostname_len + 1 );
JMF	12:0071cb144c7a	5949
JMF	12:0071cb144c7a	5950	if( ssl->hostname == NULL )
JMF	12:0071cb144c7a	5951	return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
JMF	12:0071cb144c7a	5952
JMF	12:0071cb144c7a	5953	memcpy( ssl->hostname, hostname, hostname_len );
JMF	12:0071cb144c7a	5954
JMF	12:0071cb144c7a	5955	ssl->hostname[hostname_len] = '\0';
JMF	12:0071cb144c7a	5956
JMF	12:0071cb144c7a	5957	return( 0 );
JMF	12:0071cb144c7a	5958	}
JMF	12:0071cb144c7a	5959	#endif
JMF	12:0071cb144c7a	5960
JMF	12:0071cb144c7a	5961	#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
JMF	12:0071cb144c7a	5962	void mbedtls_ssl_conf_sni( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	5963	int (f_sni)(void , mbedtls_ssl_context *,
JMF	12:0071cb144c7a	5964	const unsigned char *, size_t),
JMF	12:0071cb144c7a	5965	void *p_sni )
JMF	12:0071cb144c7a	5966	{
JMF	12:0071cb144c7a	5967	conf->f_sni = f_sni;
JMF	12:0071cb144c7a	5968	conf->p_sni = p_sni;
JMF	12:0071cb144c7a	5969	}
JMF	12:0071cb144c7a	5970	#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
JMF	12:0071cb144c7a	5971
JMF	12:0071cb144c7a	5972	#if defined(MBEDTLS_SSL_ALPN)
JMF	12:0071cb144c7a	5973	int mbedtls_ssl_conf_alpn_protocols( mbedtls_ssl_config conf, const char *protos )
JMF	12:0071cb144c7a	5974	{
JMF	12:0071cb144c7a	5975	size_t cur_len, tot_len;
JMF	12:0071cb144c7a	5976	const char **p;
JMF	12:0071cb144c7a	5977
JMF	12:0071cb144c7a	5978	/*
JMF	12:0071cb144c7a	5979	* "Empty strings MUST NOT be included and byte strings MUST NOT be
JMF	12:0071cb144c7a	5980	* truncated". Check lengths now rather than later.
JMF	12:0071cb144c7a	5981	*/
JMF	12:0071cb144c7a	5982	tot_len = 0;
JMF	12:0071cb144c7a	5983	for( p = protos; *p != NULL; p++ )
JMF	12:0071cb144c7a	5984	{
JMF	12:0071cb144c7a	5985	cur_len = strlen( *p );
JMF	12:0071cb144c7a	5986	tot_len += cur_len;
JMF	12:0071cb144c7a	5987
JMF	12:0071cb144c7a	5988	if( cur_len == 0 \|\| cur_len > 255 \|\| tot_len > 65535 )
JMF	12:0071cb144c7a	5989	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	5990	}
JMF	12:0071cb144c7a	5991
JMF	12:0071cb144c7a	5992	conf->alpn_list = protos;
JMF	12:0071cb144c7a	5993
JMF	12:0071cb144c7a	5994	return( 0 );
JMF	12:0071cb144c7a	5995	}
JMF	12:0071cb144c7a	5996
JMF	12:0071cb144c7a	5997	const char mbedtls_ssl_get_alpn_protocol( const mbedtls_ssl_context ssl )
JMF	12:0071cb144c7a	5998	{
JMF	12:0071cb144c7a	5999	return( ssl->alpn_chosen );
JMF	12:0071cb144c7a	6000	}
JMF	12:0071cb144c7a	6001	#endif /* MBEDTLS_SSL_ALPN */
JMF	12:0071cb144c7a	6002
JMF	12:0071cb144c7a	6003	void mbedtls_ssl_conf_max_version( mbedtls_ssl_config *conf, int major, int minor )
JMF	12:0071cb144c7a	6004	{
JMF	12:0071cb144c7a	6005	conf->max_major_ver = major;
JMF	12:0071cb144c7a	6006	conf->max_minor_ver = minor;
JMF	12:0071cb144c7a	6007	}
JMF	12:0071cb144c7a	6008
JMF	12:0071cb144c7a	6009	void mbedtls_ssl_conf_min_version( mbedtls_ssl_config *conf, int major, int minor )
JMF	12:0071cb144c7a	6010	{
JMF	12:0071cb144c7a	6011	conf->min_major_ver = major;
JMF	12:0071cb144c7a	6012	conf->min_minor_ver = minor;
JMF	12:0071cb144c7a	6013	}
JMF	12:0071cb144c7a	6014
JMF	12:0071cb144c7a	6015	#if defined(MBEDTLS_SSL_FALLBACK_SCSV) && defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	6016	void mbedtls_ssl_conf_fallback( mbedtls_ssl_config *conf, char fallback )
JMF	12:0071cb144c7a	6017	{
JMF	12:0071cb144c7a	6018	conf->fallback = fallback;
JMF	12:0071cb144c7a	6019	}
JMF	12:0071cb144c7a	6020	#endif
JMF	12:0071cb144c7a	6021
JMF	12:0071cb144c7a	6022	#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
JMF	12:0071cb144c7a	6023	void mbedtls_ssl_conf_encrypt_then_mac( mbedtls_ssl_config *conf, char etm )
JMF	12:0071cb144c7a	6024	{
JMF	12:0071cb144c7a	6025	conf->encrypt_then_mac = etm;
JMF	12:0071cb144c7a	6026	}
JMF	12:0071cb144c7a	6027	#endif
JMF	12:0071cb144c7a	6028
JMF	12:0071cb144c7a	6029	#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
JMF	12:0071cb144c7a	6030	void mbedtls_ssl_conf_extended_master_secret( mbedtls_ssl_config *conf, char ems )
JMF	12:0071cb144c7a	6031	{
JMF	12:0071cb144c7a	6032	conf->extended_ms = ems;
JMF	12:0071cb144c7a	6033	}
JMF	12:0071cb144c7a	6034	#endif
JMF	12:0071cb144c7a	6035
JMF	12:0071cb144c7a	6036	#if defined(MBEDTLS_ARC4_C)
JMF	12:0071cb144c7a	6037	void mbedtls_ssl_conf_arc4_support( mbedtls_ssl_config *conf, char arc4 )
JMF	12:0071cb144c7a	6038	{
JMF	12:0071cb144c7a	6039	conf->arc4_disabled = arc4;
JMF	12:0071cb144c7a	6040	}
JMF	12:0071cb144c7a	6041	#endif
JMF	12:0071cb144c7a	6042
JMF	12:0071cb144c7a	6043	#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
JMF	12:0071cb144c7a	6044	int mbedtls_ssl_conf_max_frag_len( mbedtls_ssl_config *conf, unsigned char mfl_code )
JMF	12:0071cb144c7a	6045	{
JMF	12:0071cb144c7a	6046	if( mfl_code >= MBEDTLS_SSL_MAX_FRAG_LEN_INVALID \|\|
JMF	12:0071cb144c7a	6047	mfl_code_to_length[mfl_code] > MBEDTLS_SSL_MAX_CONTENT_LEN )
JMF	12:0071cb144c7a	6048	{
JMF	12:0071cb144c7a	6049	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6050	}
JMF	12:0071cb144c7a	6051
JMF	12:0071cb144c7a	6052	conf->mfl_code = mfl_code;
JMF	12:0071cb144c7a	6053
JMF	12:0071cb144c7a	6054	return( 0 );
JMF	12:0071cb144c7a	6055	}
JMF	12:0071cb144c7a	6056	#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
JMF	12:0071cb144c7a	6057
JMF	12:0071cb144c7a	6058	#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
JMF	12:0071cb144c7a	6059	void mbedtls_ssl_conf_truncated_hmac( mbedtls_ssl_config *conf, int truncate )
JMF	12:0071cb144c7a	6060	{
JMF	12:0071cb144c7a	6061	conf->trunc_hmac = truncate;
JMF	12:0071cb144c7a	6062	}
JMF	12:0071cb144c7a	6063	#endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
JMF	12:0071cb144c7a	6064
JMF	12:0071cb144c7a	6065	#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
JMF	12:0071cb144c7a	6066	void mbedtls_ssl_conf_cbc_record_splitting( mbedtls_ssl_config *conf, char split )
JMF	12:0071cb144c7a	6067	{
JMF	12:0071cb144c7a	6068	conf->cbc_record_splitting = split;
JMF	12:0071cb144c7a	6069	}
JMF	12:0071cb144c7a	6070	#endif
JMF	12:0071cb144c7a	6071
JMF	12:0071cb144c7a	6072	void mbedtls_ssl_conf_legacy_renegotiation( mbedtls_ssl_config *conf, int allow_legacy )
JMF	12:0071cb144c7a	6073	{
JMF	12:0071cb144c7a	6074	conf->allow_legacy_renegotiation = allow_legacy;
JMF	12:0071cb144c7a	6075	}
JMF	12:0071cb144c7a	6076
JMF	12:0071cb144c7a	6077	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	6078	void mbedtls_ssl_conf_renegotiation( mbedtls_ssl_config *conf, int renegotiation )
JMF	12:0071cb144c7a	6079	{
JMF	12:0071cb144c7a	6080	conf->disable_renegotiation = renegotiation;
JMF	12:0071cb144c7a	6081	}
JMF	12:0071cb144c7a	6082
JMF	12:0071cb144c7a	6083	void mbedtls_ssl_conf_renegotiation_enforced( mbedtls_ssl_config *conf, int max_records )
JMF	12:0071cb144c7a	6084	{
JMF	12:0071cb144c7a	6085	conf->renego_max_records = max_records;
JMF	12:0071cb144c7a	6086	}
JMF	12:0071cb144c7a	6087
JMF	12:0071cb144c7a	6088	void mbedtls_ssl_conf_renegotiation_period( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	6089	const unsigned char period[8] )
JMF	12:0071cb144c7a	6090	{
JMF	12:0071cb144c7a	6091	memcpy( conf->renego_period, period, 8 );
JMF	12:0071cb144c7a	6092	}
JMF	12:0071cb144c7a	6093	#endif /* MBEDTLS_SSL_RENEGOTIATION */
JMF	12:0071cb144c7a	6094
JMF	12:0071cb144c7a	6095	#if defined(MBEDTLS_SSL_SESSION_TICKETS)
JMF	12:0071cb144c7a	6096	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	6097	void mbedtls_ssl_conf_session_tickets( mbedtls_ssl_config *conf, int use_tickets )
JMF	12:0071cb144c7a	6098	{
JMF	12:0071cb144c7a	6099	conf->session_tickets = use_tickets;
JMF	12:0071cb144c7a	6100	}
JMF	12:0071cb144c7a	6101	#endif
JMF	12:0071cb144c7a	6102
JMF	12:0071cb144c7a	6103	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	6104	void mbedtls_ssl_conf_session_tickets_cb( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	6105	mbedtls_ssl_ticket_write_t *f_ticket_write,
JMF	12:0071cb144c7a	6106	mbedtls_ssl_ticket_parse_t *f_ticket_parse,
JMF	12:0071cb144c7a	6107	void *p_ticket )
JMF	12:0071cb144c7a	6108	{
JMF	12:0071cb144c7a	6109	conf->f_ticket_write = f_ticket_write;
JMF	12:0071cb144c7a	6110	conf->f_ticket_parse = f_ticket_parse;
JMF	12:0071cb144c7a	6111	conf->p_ticket = p_ticket;
JMF	12:0071cb144c7a	6112	}
JMF	12:0071cb144c7a	6113	#endif
JMF	12:0071cb144c7a	6114	#endif /* MBEDTLS_SSL_SESSION_TICKETS */
JMF	12:0071cb144c7a	6115
JMF	12:0071cb144c7a	6116	#if defined(MBEDTLS_SSL_EXPORT_KEYS)
JMF	12:0071cb144c7a	6117	void mbedtls_ssl_conf_export_keys_cb( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	6118	mbedtls_ssl_export_keys_t *f_export_keys,
JMF	12:0071cb144c7a	6119	void *p_export_keys )
JMF	12:0071cb144c7a	6120	{
JMF	12:0071cb144c7a	6121	conf->f_export_keys = f_export_keys;
JMF	12:0071cb144c7a	6122	conf->p_export_keys = p_export_keys;
JMF	12:0071cb144c7a	6123	}
JMF	12:0071cb144c7a	6124	#endif
JMF	12:0071cb144c7a	6125
JMF	12:0071cb144c7a	6126	/*
JMF	12:0071cb144c7a	6127	* SSL get accessors
JMF	12:0071cb144c7a	6128	*/
JMF	12:0071cb144c7a	6129	size_t mbedtls_ssl_get_bytes_avail( const mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6130	{
JMF	12:0071cb144c7a	6131	return( ssl->in_offt == NULL ? 0 : ssl->in_msglen );
JMF	12:0071cb144c7a	6132	}
JMF	12:0071cb144c7a	6133
JMF	12:0071cb144c7a	6134	uint32_t mbedtls_ssl_get_verify_result( const mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6135	{
JMF	12:0071cb144c7a	6136	if( ssl->session != NULL )
JMF	12:0071cb144c7a	6137	return( ssl->session->verify_result );
JMF	12:0071cb144c7a	6138
JMF	12:0071cb144c7a	6139	if( ssl->session_negotiate != NULL )
JMF	12:0071cb144c7a	6140	return( ssl->session_negotiate->verify_result );
JMF	12:0071cb144c7a	6141
JMF	12:0071cb144c7a	6142	return( 0xFFFFFFFF );
JMF	12:0071cb144c7a	6143	}
JMF	12:0071cb144c7a	6144
JMF	12:0071cb144c7a	6145	const char mbedtls_ssl_get_ciphersuite( const mbedtls_ssl_context ssl )
JMF	12:0071cb144c7a	6146	{
JMF	12:0071cb144c7a	6147	if( ssl == NULL \|\| ssl->session == NULL )
JMF	12:0071cb144c7a	6148	return( NULL );
JMF	12:0071cb144c7a	6149
JMF	12:0071cb144c7a	6150	return mbedtls_ssl_get_ciphersuite_name( ssl->session->ciphersuite );
JMF	12:0071cb144c7a	6151	}
JMF	12:0071cb144c7a	6152
JMF	12:0071cb144c7a	6153	const char mbedtls_ssl_get_version( const mbedtls_ssl_context ssl )
JMF	12:0071cb144c7a	6154	{
JMF	12:0071cb144c7a	6155	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	6156	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	6157	{
JMF	12:0071cb144c7a	6158	switch( ssl->minor_ver )
JMF	12:0071cb144c7a	6159	{
JMF	12:0071cb144c7a	6160	case MBEDTLS_SSL_MINOR_VERSION_2:
JMF	12:0071cb144c7a	6161	return( "DTLSv1.0" );
JMF	12:0071cb144c7a	6162
JMF	12:0071cb144c7a	6163	case MBEDTLS_SSL_MINOR_VERSION_3:
JMF	12:0071cb144c7a	6164	return( "DTLSv1.2" );
JMF	12:0071cb144c7a	6165
JMF	12:0071cb144c7a	6166	default:
JMF	12:0071cb144c7a	6167	return( "unknown (DTLS)" );
JMF	12:0071cb144c7a	6168	}
JMF	12:0071cb144c7a	6169	}
JMF	12:0071cb144c7a	6170	#endif
JMF	12:0071cb144c7a	6171
JMF	12:0071cb144c7a	6172	switch( ssl->minor_ver )
JMF	12:0071cb144c7a	6173	{
JMF	12:0071cb144c7a	6174	case MBEDTLS_SSL_MINOR_VERSION_0:
JMF	12:0071cb144c7a	6175	return( "SSLv3.0" );
JMF	12:0071cb144c7a	6176
JMF	12:0071cb144c7a	6177	case MBEDTLS_SSL_MINOR_VERSION_1:
JMF	12:0071cb144c7a	6178	return( "TLSv1.0" );
JMF	12:0071cb144c7a	6179
JMF	12:0071cb144c7a	6180	case MBEDTLS_SSL_MINOR_VERSION_2:
JMF	12:0071cb144c7a	6181	return( "TLSv1.1" );
JMF	12:0071cb144c7a	6182
JMF	12:0071cb144c7a	6183	case MBEDTLS_SSL_MINOR_VERSION_3:
JMF	12:0071cb144c7a	6184	return( "TLSv1.2" );
JMF	12:0071cb144c7a	6185
JMF	12:0071cb144c7a	6186	default:
JMF	12:0071cb144c7a	6187	return( "unknown" );
JMF	12:0071cb144c7a	6188	}
JMF	12:0071cb144c7a	6189	}
JMF	12:0071cb144c7a	6190
JMF	12:0071cb144c7a	6191	int mbedtls_ssl_get_record_expansion( const mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6192	{
JMF	12:0071cb144c7a	6193	size_t transform_expansion;
JMF	12:0071cb144c7a	6194	const mbedtls_ssl_transform *transform = ssl->transform_out;
JMF	12:0071cb144c7a	6195
JMF	12:0071cb144c7a	6196	#if defined(MBEDTLS_ZLIB_SUPPORT)
JMF	12:0071cb144c7a	6197	if( ssl->session_out->compression != MBEDTLS_SSL_COMPRESS_NULL )
JMF	12:0071cb144c7a	6198	return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
JMF	12:0071cb144c7a	6199	#endif
JMF	12:0071cb144c7a	6200
JMF	12:0071cb144c7a	6201	if( transform == NULL )
JMF	12:0071cb144c7a	6202	return( (int) mbedtls_ssl_hdr_len( ssl ) );
JMF	12:0071cb144c7a	6203
JMF	12:0071cb144c7a	6204	switch( mbedtls_cipher_get_cipher_mode( &transform->cipher_ctx_enc ) )
JMF	12:0071cb144c7a	6205	{
JMF	12:0071cb144c7a	6206	case MBEDTLS_MODE_GCM:
JMF	12:0071cb144c7a	6207	case MBEDTLS_MODE_CCM:
JMF	12:0071cb144c7a	6208	case MBEDTLS_MODE_STREAM:
JMF	12:0071cb144c7a	6209	transform_expansion = transform->minlen;
JMF	12:0071cb144c7a	6210	break;
JMF	12:0071cb144c7a	6211
JMF	12:0071cb144c7a	6212	case MBEDTLS_MODE_CBC:
JMF	12:0071cb144c7a	6213	transform_expansion = transform->maclen
JMF	12:0071cb144c7a	6214	+ mbedtls_cipher_get_block_size( &transform->cipher_ctx_enc );
JMF	12:0071cb144c7a	6215	break;
JMF	12:0071cb144c7a	6216
JMF	12:0071cb144c7a	6217	default:
JMF	12:0071cb144c7a	6218	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	6219	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	6220	}
JMF	12:0071cb144c7a	6221
JMF	12:0071cb144c7a	6222	return( (int)( mbedtls_ssl_hdr_len( ssl ) + transform_expansion ) );
JMF	12:0071cb144c7a	6223	}
JMF	12:0071cb144c7a	6224
JMF	12:0071cb144c7a	6225	#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
JMF	12:0071cb144c7a	6226	size_t mbedtls_ssl_get_max_frag_len( const mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6227	{
JMF	12:0071cb144c7a	6228	size_t max_len;
JMF	12:0071cb144c7a	6229
JMF	12:0071cb144c7a	6230	/*
JMF	12:0071cb144c7a	6231	* Assume mfl_code is correct since it was checked when set
JMF	12:0071cb144c7a	6232	*/
JMF	12:0071cb144c7a	6233	max_len = mfl_code_to_length[ssl->conf->mfl_code];
JMF	12:0071cb144c7a	6234
JMF	12:0071cb144c7a	6235	/*
JMF	12:0071cb144c7a	6236	* Check if a smaller max length was negotiated
JMF	12:0071cb144c7a	6237	*/
JMF	12:0071cb144c7a	6238	if( ssl->session_out != NULL &&
JMF	12:0071cb144c7a	6239	mfl_code_to_length[ssl->session_out->mfl_code] < max_len )
JMF	12:0071cb144c7a	6240	{
JMF	12:0071cb144c7a	6241	max_len = mfl_code_to_length[ssl->session_out->mfl_code];
JMF	12:0071cb144c7a	6242	}
JMF	12:0071cb144c7a	6243
JMF	12:0071cb144c7a	6244	return max_len;
JMF	12:0071cb144c7a	6245	}
JMF	12:0071cb144c7a	6246	#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
JMF	12:0071cb144c7a	6247
JMF	12:0071cb144c7a	6248	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	6249	const mbedtls_x509_crt mbedtls_ssl_get_peer_cert( const mbedtls_ssl_context ssl )
JMF	12:0071cb144c7a	6250	{
JMF	12:0071cb144c7a	6251	if( ssl == NULL \|\| ssl->session == NULL )
JMF	12:0071cb144c7a	6252	return( NULL );
JMF	12:0071cb144c7a	6253
JMF	12:0071cb144c7a	6254	return( ssl->session->peer_cert );
JMF	12:0071cb144c7a	6255	}
JMF	12:0071cb144c7a	6256	#endif /* MBEDTLS_X509_CRT_PARSE_C */
JMF	12:0071cb144c7a	6257
JMF	12:0071cb144c7a	6258	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	6259	int mbedtls_ssl_get_session( const mbedtls_ssl_context ssl, mbedtls_ssl_session dst )
JMF	12:0071cb144c7a	6260	{
JMF	12:0071cb144c7a	6261	if( ssl == NULL \|\|
JMF	12:0071cb144c7a	6262	dst == NULL \|\|
JMF	12:0071cb144c7a	6263	ssl->session == NULL \|\|
JMF	12:0071cb144c7a	6264	ssl->conf->endpoint != MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	6265	{
JMF	12:0071cb144c7a	6266	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6267	}
JMF	12:0071cb144c7a	6268
JMF	12:0071cb144c7a	6269	return( ssl_session_copy( dst, ssl->session ) );
JMF	12:0071cb144c7a	6270	}
JMF	12:0071cb144c7a	6271	#endif /* MBEDTLS_SSL_CLI_C */
JMF	12:0071cb144c7a	6272
JMF	12:0071cb144c7a	6273	/*
JMF	12:0071cb144c7a	6274	* Perform a single step of the SSL handshake
JMF	12:0071cb144c7a	6275	*/
JMF	12:0071cb144c7a	6276	int mbedtls_ssl_handshake_step( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6277	{
JMF	12:0071cb144c7a	6278	int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
JMF	12:0071cb144c7a	6279
JMF	12:0071cb144c7a	6280	if( ssl == NULL \|\| ssl->conf == NULL )
JMF	12:0071cb144c7a	6281	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6282
JMF	12:0071cb144c7a	6283	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	6284	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	6285	ret = mbedtls_ssl_handshake_client_step( ssl );
JMF	12:0071cb144c7a	6286	#endif
JMF	12:0071cb144c7a	6287	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	6288	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	6289	ret = mbedtls_ssl_handshake_server_step( ssl );
JMF	12:0071cb144c7a	6290	#endif
JMF	12:0071cb144c7a	6291
JMF	12:0071cb144c7a	6292	return( ret );
JMF	12:0071cb144c7a	6293	}
JMF	12:0071cb144c7a	6294
JMF	12:0071cb144c7a	6295	/*
JMF	12:0071cb144c7a	6296	* Perform the SSL handshake
JMF	12:0071cb144c7a	6297	*/
JMF	12:0071cb144c7a	6298	int mbedtls_ssl_handshake( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6299	{
JMF	12:0071cb144c7a	6300	int ret = 0;
JMF	12:0071cb144c7a	6301
JMF	12:0071cb144c7a	6302	if( ssl == NULL \|\| ssl->conf == NULL )
JMF	12:0071cb144c7a	6303	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6304
JMF	12:0071cb144c7a	6305	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> handshake" ) );
JMF	12:0071cb144c7a	6306
JMF	12:0071cb144c7a	6307	while( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	6308	{
JMF	12:0071cb144c7a	6309	ret = mbedtls_ssl_handshake_step( ssl );
JMF	12:0071cb144c7a	6310
JMF	12:0071cb144c7a	6311	if( ret != 0 )
JMF	12:0071cb144c7a	6312	break;
JMF	12:0071cb144c7a	6313	}
JMF	12:0071cb144c7a	6314
JMF	12:0071cb144c7a	6315	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= handshake" ) );
JMF	12:0071cb144c7a	6316
JMF	12:0071cb144c7a	6317	return( ret );
JMF	12:0071cb144c7a	6318	}
JMF	12:0071cb144c7a	6319
JMF	12:0071cb144c7a	6320	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	6321	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	6322	/*
JMF	12:0071cb144c7a	6323	* Write HelloRequest to request renegotiation on server
JMF	12:0071cb144c7a	6324	*/
JMF	12:0071cb144c7a	6325	static int ssl_write_hello_request( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6326	{
JMF	12:0071cb144c7a	6327	int ret;
JMF	12:0071cb144c7a	6328
JMF	12:0071cb144c7a	6329	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write hello request" ) );
JMF	12:0071cb144c7a	6330
JMF	12:0071cb144c7a	6331	ssl->out_msglen = 4;
JMF	12:0071cb144c7a	6332	ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
JMF	12:0071cb144c7a	6333	ssl->out_msg[0] = MBEDTLS_SSL_HS_HELLO_REQUEST;
JMF	12:0071cb144c7a	6334
JMF	12:0071cb144c7a	6335	if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6336	{
JMF	12:0071cb144c7a	6337	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret );
JMF	12:0071cb144c7a	6338	return( ret );
JMF	12:0071cb144c7a	6339	}
JMF	12:0071cb144c7a	6340
JMF	12:0071cb144c7a	6341	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write hello request" ) );
JMF	12:0071cb144c7a	6342
JMF	12:0071cb144c7a	6343	return( 0 );
JMF	12:0071cb144c7a	6344	}
JMF	12:0071cb144c7a	6345	#endif /* MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	6346
JMF	12:0071cb144c7a	6347	/*
JMF	12:0071cb144c7a	6348	* Actually renegotiate current connection, triggered by either:
JMF	12:0071cb144c7a	6349	* - any side: calling mbedtls_ssl_renegotiate(),
JMF	12:0071cb144c7a	6350	* - client: receiving a HelloRequest during mbedtls_ssl_read(),
JMF	12:0071cb144c7a	6351	* - server: receiving any handshake message on server during mbedtls_ssl_read() after
JMF	12:0071cb144c7a	6352	* the initial handshake is completed.
JMF	12:0071cb144c7a	6353	* If the handshake doesn't complete due to waiting for I/O, it will continue
JMF	12:0071cb144c7a	6354	* during the next calls to mbedtls_ssl_renegotiate() or mbedtls_ssl_read() respectively.
JMF	12:0071cb144c7a	6355	*/
JMF	12:0071cb144c7a	6356	static int ssl_start_renegotiation( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6357	{
JMF	12:0071cb144c7a	6358	int ret;
JMF	12:0071cb144c7a	6359
JMF	12:0071cb144c7a	6360	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> renegotiate" ) );
JMF	12:0071cb144c7a	6361
JMF	12:0071cb144c7a	6362	if( ( ret = ssl_handshake_init( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6363	return( ret );
JMF	12:0071cb144c7a	6364
JMF	12:0071cb144c7a	6365	/* RFC 6347 4.2.2: "[...] the HelloRequest will have message_seq = 0 and
JMF	12:0071cb144c7a	6366	* the ServerHello will have message_seq = 1" */
JMF	12:0071cb144c7a	6367	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	6368	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
JMF	12:0071cb144c7a	6369	ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING )
JMF	12:0071cb144c7a	6370	{
JMF	12:0071cb144c7a	6371	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	6372	ssl->handshake->out_msg_seq = 1;
JMF	12:0071cb144c7a	6373	else
JMF	12:0071cb144c7a	6374	ssl->handshake->in_msg_seq = 1;
JMF	12:0071cb144c7a	6375	}
JMF	12:0071cb144c7a	6376	#endif
JMF	12:0071cb144c7a	6377
JMF	12:0071cb144c7a	6378	ssl->state = MBEDTLS_SSL_HELLO_REQUEST;
JMF	12:0071cb144c7a	6379	ssl->renego_status = MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS;
JMF	12:0071cb144c7a	6380
JMF	12:0071cb144c7a	6381	if( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6382	{
JMF	12:0071cb144c7a	6383	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_handshake", ret );
JMF	12:0071cb144c7a	6384	return( ret );
JMF	12:0071cb144c7a	6385	}
JMF	12:0071cb144c7a	6386
JMF	12:0071cb144c7a	6387	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= renegotiate" ) );
JMF	12:0071cb144c7a	6388
JMF	12:0071cb144c7a	6389	return( 0 );
JMF	12:0071cb144c7a	6390	}
JMF	12:0071cb144c7a	6391
JMF	12:0071cb144c7a	6392	/*
JMF	12:0071cb144c7a	6393	* Renegotiate current connection on client,
JMF	12:0071cb144c7a	6394	* or request renegotiation on server
JMF	12:0071cb144c7a	6395	*/
JMF	12:0071cb144c7a	6396	int mbedtls_ssl_renegotiate( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6397	{
JMF	12:0071cb144c7a	6398	int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
JMF	12:0071cb144c7a	6399
JMF	12:0071cb144c7a	6400	if( ssl == NULL \|\| ssl->conf == NULL )
JMF	12:0071cb144c7a	6401	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6402
JMF	12:0071cb144c7a	6403	#if defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	6404	/* On server, just send the request */
JMF	12:0071cb144c7a	6405	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	6406	{
JMF	12:0071cb144c7a	6407	if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	6408	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6409
JMF	12:0071cb144c7a	6410	ssl->renego_status = MBEDTLS_SSL_RENEGOTIATION_PENDING;
JMF	12:0071cb144c7a	6411
JMF	12:0071cb144c7a	6412	/* Did we already try/start sending HelloRequest? */
JMF	12:0071cb144c7a	6413	if( ssl->out_left != 0 )
JMF	12:0071cb144c7a	6414	return( mbedtls_ssl_flush_output( ssl ) );
JMF	12:0071cb144c7a	6415
JMF	12:0071cb144c7a	6416	return( ssl_write_hello_request( ssl ) );
JMF	12:0071cb144c7a	6417	}
JMF	12:0071cb144c7a	6418	#endif /* MBEDTLS_SSL_SRV_C */
JMF	12:0071cb144c7a	6419
JMF	12:0071cb144c7a	6420	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	6421	/*
JMF	12:0071cb144c7a	6422	* On client, either start the renegotiation process or,
JMF	12:0071cb144c7a	6423	* if already in progress, continue the handshake
JMF	12:0071cb144c7a	6424	*/
JMF	12:0071cb144c7a	6425	if( ssl->renego_status != MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS )
JMF	12:0071cb144c7a	6426	{
JMF	12:0071cb144c7a	6427	if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	6428	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6429
JMF	12:0071cb144c7a	6430	if( ( ret = ssl_start_renegotiation( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6431	{
JMF	12:0071cb144c7a	6432	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_start_renegotiation", ret );
JMF	12:0071cb144c7a	6433	return( ret );
JMF	12:0071cb144c7a	6434	}
JMF	12:0071cb144c7a	6435	}
JMF	12:0071cb144c7a	6436	else
JMF	12:0071cb144c7a	6437	{
JMF	12:0071cb144c7a	6438	if( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6439	{
JMF	12:0071cb144c7a	6440	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_handshake", ret );
JMF	12:0071cb144c7a	6441	return( ret );
JMF	12:0071cb144c7a	6442	}
JMF	12:0071cb144c7a	6443	}
JMF	12:0071cb144c7a	6444	#endif /* MBEDTLS_SSL_CLI_C */
JMF	12:0071cb144c7a	6445
JMF	12:0071cb144c7a	6446	return( ret );
JMF	12:0071cb144c7a	6447	}
JMF	12:0071cb144c7a	6448
JMF	12:0071cb144c7a	6449	/*
JMF	12:0071cb144c7a	6450	* Check record counters and renegotiate if they're above the limit.
JMF	12:0071cb144c7a	6451	*/
JMF	12:0071cb144c7a	6452	static int ssl_check_ctr_renegotiate( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6453	{
JMF	12:0071cb144c7a	6454	if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER \|\|
JMF	12:0071cb144c7a	6455	ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING \|\|
JMF	12:0071cb144c7a	6456	ssl->conf->disable_renegotiation == MBEDTLS_SSL_RENEGOTIATION_DISABLED )
JMF	12:0071cb144c7a	6457	{
JMF	12:0071cb144c7a	6458	return( 0 );
JMF	12:0071cb144c7a	6459	}
JMF	12:0071cb144c7a	6460
JMF	12:0071cb144c7a	6461	if( memcmp( ssl->in_ctr, ssl->conf->renego_period, 8 ) <= 0 &&
JMF	12:0071cb144c7a	6462	memcmp( ssl->out_ctr, ssl->conf->renego_period, 8 ) <= 0 )
JMF	12:0071cb144c7a	6463	{
JMF	12:0071cb144c7a	6464	return( 0 );
JMF	12:0071cb144c7a	6465	}
JMF	12:0071cb144c7a	6466
JMF	12:0071cb144c7a	6467	MBEDTLS_SSL_DEBUG_MSG( 1, ( "record counter limit reached: renegotiate" ) );
JMF	12:0071cb144c7a	6468	return( mbedtls_ssl_renegotiate( ssl ) );
JMF	12:0071cb144c7a	6469	}
JMF	12:0071cb144c7a	6470	#endif /* MBEDTLS_SSL_RENEGOTIATION */
JMF	12:0071cb144c7a	6471
JMF	12:0071cb144c7a	6472	/*
JMF	12:0071cb144c7a	6473	* Receive application data decrypted from the SSL layer
JMF	12:0071cb144c7a	6474	*/
JMF	12:0071cb144c7a	6475	int mbedtls_ssl_read( mbedtls_ssl_context ssl, unsigned char buf, size_t len )
JMF	12:0071cb144c7a	6476	{
JMF	12:0071cb144c7a	6477	int ret, record_read = 0;
JMF	12:0071cb144c7a	6478	size_t n;
JMF	12:0071cb144c7a	6479
JMF	12:0071cb144c7a	6480	if( ssl == NULL \|\| ssl->conf == NULL )
JMF	12:0071cb144c7a	6481	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6482
JMF	12:0071cb144c7a	6483	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> read" ) );
JMF	12:0071cb144c7a	6484
JMF	12:0071cb144c7a	6485	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	6486	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	6487	{
JMF	12:0071cb144c7a	6488	if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6489	return( ret );
JMF	12:0071cb144c7a	6490
JMF	12:0071cb144c7a	6491	if( ssl->handshake != NULL &&
JMF	12:0071cb144c7a	6492	ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING )
JMF	12:0071cb144c7a	6493	{
JMF	12:0071cb144c7a	6494	if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6495	return( ret );
JMF	12:0071cb144c7a	6496	}
JMF	12:0071cb144c7a	6497	}
JMF	12:0071cb144c7a	6498	#endif
JMF	12:0071cb144c7a	6499
JMF	12:0071cb144c7a	6500	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	6501	if( ( ret = ssl_check_ctr_renegotiate( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6502	{
JMF	12:0071cb144c7a	6503	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_check_ctr_renegotiate", ret );
JMF	12:0071cb144c7a	6504	return( ret );
JMF	12:0071cb144c7a	6505	}
JMF	12:0071cb144c7a	6506	#endif
JMF	12:0071cb144c7a	6507
JMF	12:0071cb144c7a	6508	if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	6509	{
JMF	12:0071cb144c7a	6510	ret = mbedtls_ssl_handshake( ssl );
JMF	12:0071cb144c7a	6511	if( ret == MBEDTLS_ERR_SSL_WAITING_SERVER_HELLO_RENEGO )
JMF	12:0071cb144c7a	6512	{
JMF	12:0071cb144c7a	6513	record_read = 1;
JMF	12:0071cb144c7a	6514	}
JMF	12:0071cb144c7a	6515	else if( ret != 0 )
JMF	12:0071cb144c7a	6516	{
JMF	12:0071cb144c7a	6517	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_handshake", ret );
JMF	12:0071cb144c7a	6518	return( ret );
JMF	12:0071cb144c7a	6519	}
JMF	12:0071cb144c7a	6520	}
JMF	12:0071cb144c7a	6521
JMF	12:0071cb144c7a	6522	if( ssl->in_offt == NULL )
JMF	12:0071cb144c7a	6523	{
JMF	12:0071cb144c7a	6524	/* Start timer if not already running */
JMF	12:0071cb144c7a	6525	if( ssl->f_get_timer != NULL &&
JMF	12:0071cb144c7a	6526	ssl->f_get_timer( ssl->p_timer ) == -1 )
JMF	12:0071cb144c7a	6527	{
JMF	12:0071cb144c7a	6528	ssl_set_timer( ssl, ssl->conf->read_timeout );
JMF	12:0071cb144c7a	6529	}
JMF	12:0071cb144c7a	6530
JMF	12:0071cb144c7a	6531	if( ! record_read )
JMF	12:0071cb144c7a	6532	{
JMF	12:0071cb144c7a	6533	if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6534	{
JMF	12:0071cb144c7a	6535	if( ret == MBEDTLS_ERR_SSL_CONN_EOF )
JMF	12:0071cb144c7a	6536	return( 0 );
JMF	12:0071cb144c7a	6537
JMF	12:0071cb144c7a	6538	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
JMF	12:0071cb144c7a	6539	return( ret );
JMF	12:0071cb144c7a	6540	}
JMF	12:0071cb144c7a	6541	}
JMF	12:0071cb144c7a	6542
JMF	12:0071cb144c7a	6543	if( ssl->in_msglen == 0 &&
JMF	12:0071cb144c7a	6544	ssl->in_msgtype == MBEDTLS_SSL_MSG_APPLICATION_DATA )
JMF	12:0071cb144c7a	6545	{
JMF	12:0071cb144c7a	6546	/*
JMF	12:0071cb144c7a	6547	* OpenSSL sends empty messages to randomize the IV
JMF	12:0071cb144c7a	6548	*/
JMF	12:0071cb144c7a	6549	if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6550	{
JMF	12:0071cb144c7a	6551	if( ret == MBEDTLS_ERR_SSL_CONN_EOF )
JMF	12:0071cb144c7a	6552	return( 0 );
JMF	12:0071cb144c7a	6553
JMF	12:0071cb144c7a	6554	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
JMF	12:0071cb144c7a	6555	return( ret );
JMF	12:0071cb144c7a	6556	}
JMF	12:0071cb144c7a	6557	}
JMF	12:0071cb144c7a	6558
JMF	12:0071cb144c7a	6559	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	6560	if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE )
JMF	12:0071cb144c7a	6561	{
JMF	12:0071cb144c7a	6562	MBEDTLS_SSL_DEBUG_MSG( 1, ( "received handshake message" ) );
JMF	12:0071cb144c7a	6563
JMF	12:0071cb144c7a	6564	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	6565	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT &&
JMF	12:0071cb144c7a	6566	( ssl->in_msg[0] != MBEDTLS_SSL_HS_HELLO_REQUEST \|\|
JMF	12:0071cb144c7a	6567	ssl->in_hslen != mbedtls_ssl_hs_hdr_len( ssl ) ) )
JMF	12:0071cb144c7a	6568	{
JMF	12:0071cb144c7a	6569	MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake received (not HelloRequest)" ) );
JMF	12:0071cb144c7a	6570
JMF	12:0071cb144c7a	6571	/* With DTLS, drop the packet (probably from last handshake) */
JMF	12:0071cb144c7a	6572	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	6573	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	6574	return( MBEDTLS_ERR_SSL_WANT_READ );
JMF	12:0071cb144c7a	6575	#endif
JMF	12:0071cb144c7a	6576	return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
JMF	12:0071cb144c7a	6577	}
JMF	12:0071cb144c7a	6578
JMF	12:0071cb144c7a	6579	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER &&
JMF	12:0071cb144c7a	6580	ssl->in_msg[0] != MBEDTLS_SSL_HS_CLIENT_HELLO )
JMF	12:0071cb144c7a	6581	{
JMF	12:0071cb144c7a	6582	MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake received (not ClientHello)" ) );
JMF	12:0071cb144c7a	6583
JMF	12:0071cb144c7a	6584	/* With DTLS, drop the packet (probably from last handshake) */
JMF	12:0071cb144c7a	6585	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	6586	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	6587	return( MBEDTLS_ERR_SSL_WANT_READ );
JMF	12:0071cb144c7a	6588	#endif
JMF	12:0071cb144c7a	6589	return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
JMF	12:0071cb144c7a	6590	}
JMF	12:0071cb144c7a	6591	#endif
JMF	12:0071cb144c7a	6592
JMF	12:0071cb144c7a	6593	if( ssl->conf->disable_renegotiation == MBEDTLS_SSL_RENEGOTIATION_DISABLED \|\|
JMF	12:0071cb144c7a	6594	( ssl->secure_renegotiation == MBEDTLS_SSL_LEGACY_RENEGOTIATION &&
JMF	12:0071cb144c7a	6595	ssl->conf->allow_legacy_renegotiation ==
JMF	12:0071cb144c7a	6596	MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION ) )
JMF	12:0071cb144c7a	6597	{
JMF	12:0071cb144c7a	6598	MBEDTLS_SSL_DEBUG_MSG( 3, ( "refusing renegotiation, sending alert" ) );
JMF	12:0071cb144c7a	6599
JMF	12:0071cb144c7a	6600	#if defined(MBEDTLS_SSL_PROTO_SSL3)
JMF	12:0071cb144c7a	6601	if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
JMF	12:0071cb144c7a	6602	{
JMF	12:0071cb144c7a	6603	/*
JMF	12:0071cb144c7a	6604	* SSLv3 does not have a "no_renegotiation" alert
JMF	12:0071cb144c7a	6605	*/
JMF	12:0071cb144c7a	6606	if( ( ret = mbedtls_ssl_send_fatal_handshake_failure( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6607	return( ret );
JMF	12:0071cb144c7a	6608	}
JMF	12:0071cb144c7a	6609	else
JMF	12:0071cb144c7a	6610	#endif /* MBEDTLS_SSL_PROTO_SSL3 */
JMF	12:0071cb144c7a	6611	#if defined(MBEDTLS_SSL_PROTO_TLS1) \|\| defined(MBEDTLS_SSL_PROTO_TLS1_1) \|\| \
JMF	12:0071cb144c7a	6612	defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	6613	if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_1 )
JMF	12:0071cb144c7a	6614	{
JMF	12:0071cb144c7a	6615	if( ( ret = mbedtls_ssl_send_alert_message( ssl,
JMF	12:0071cb144c7a	6616	MBEDTLS_SSL_ALERT_LEVEL_WARNING,
JMF	12:0071cb144c7a	6617	MBEDTLS_SSL_ALERT_MSG_NO_RENEGOTIATION ) ) != 0 )
JMF	12:0071cb144c7a	6618	{
JMF	12:0071cb144c7a	6619	return( ret );
JMF	12:0071cb144c7a	6620	}
JMF	12:0071cb144c7a	6621	}
JMF	12:0071cb144c7a	6622	else
JMF	12:0071cb144c7a	6623	#endif /* MBEDTLS_SSL_PROTO_TLS1 \|\| MBEDTLS_SSL_PROTO_TLS1_1 \|\|
JMF	12:0071cb144c7a	6624	MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	6625	{
JMF	12:0071cb144c7a	6626	MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
JMF	12:0071cb144c7a	6627	return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
JMF	12:0071cb144c7a	6628	}
JMF	12:0071cb144c7a	6629	}
JMF	12:0071cb144c7a	6630	else
JMF	12:0071cb144c7a	6631	{
JMF	12:0071cb144c7a	6632	/* DTLS clients need to know renego is server-initiated */
JMF	12:0071cb144c7a	6633	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	6634	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
JMF	12:0071cb144c7a	6635	ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	6636	{
JMF	12:0071cb144c7a	6637	ssl->renego_status = MBEDTLS_SSL_RENEGOTIATION_PENDING;
JMF	12:0071cb144c7a	6638	}
JMF	12:0071cb144c7a	6639	#endif
JMF	12:0071cb144c7a	6640	ret = ssl_start_renegotiation( ssl );
JMF	12:0071cb144c7a	6641	if( ret == MBEDTLS_ERR_SSL_WAITING_SERVER_HELLO_RENEGO )
JMF	12:0071cb144c7a	6642	{
JMF	12:0071cb144c7a	6643	record_read = 1;
JMF	12:0071cb144c7a	6644	}
JMF	12:0071cb144c7a	6645	else if( ret != 0 )
JMF	12:0071cb144c7a	6646	{
JMF	12:0071cb144c7a	6647	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_start_renegotiation", ret );
JMF	12:0071cb144c7a	6648	return( ret );
JMF	12:0071cb144c7a	6649	}
JMF	12:0071cb144c7a	6650	}
JMF	12:0071cb144c7a	6651
JMF	12:0071cb144c7a	6652	/* If a non-handshake record was read during renego, fallthrough,
JMF	12:0071cb144c7a	6653	* else tell the user they should call mbedtls_ssl_read() again */
JMF	12:0071cb144c7a	6654	if( ! record_read )
JMF	12:0071cb144c7a	6655	return( MBEDTLS_ERR_SSL_WANT_READ );
JMF	12:0071cb144c7a	6656	}
JMF	12:0071cb144c7a	6657	else if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING )
JMF	12:0071cb144c7a	6658	{
JMF	12:0071cb144c7a	6659
JMF	12:0071cb144c7a	6660	if( ssl->conf->renego_max_records >= 0 )
JMF	12:0071cb144c7a	6661	{
JMF	12:0071cb144c7a	6662	if( ++ssl->renego_records_seen > ssl->conf->renego_max_records )
JMF	12:0071cb144c7a	6663	{
JMF	12:0071cb144c7a	6664	MBEDTLS_SSL_DEBUG_MSG( 1, ( "renegotiation requested, "
JMF	12:0071cb144c7a	6665	"but not honored by client" ) );
JMF	12:0071cb144c7a	6666	return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
JMF	12:0071cb144c7a	6667	}
JMF	12:0071cb144c7a	6668	}
JMF	12:0071cb144c7a	6669	}
JMF	12:0071cb144c7a	6670	#endif /* MBEDTLS_SSL_RENEGOTIATION */
JMF	12:0071cb144c7a	6671
JMF	12:0071cb144c7a	6672	/* Fatal and closure alerts handled by mbedtls_ssl_read_record() */
JMF	12:0071cb144c7a	6673	if( ssl->in_msgtype == MBEDTLS_SSL_MSG_ALERT )
JMF	12:0071cb144c7a	6674	{
JMF	12:0071cb144c7a	6675	MBEDTLS_SSL_DEBUG_MSG( 2, ( "ignoring non-fatal non-closure alert" ) );
JMF	12:0071cb144c7a	6676	return( MBEDTLS_ERR_SSL_WANT_READ );
JMF	12:0071cb144c7a	6677	}
JMF	12:0071cb144c7a	6678
JMF	12:0071cb144c7a	6679	if( ssl->in_msgtype != MBEDTLS_SSL_MSG_APPLICATION_DATA )
JMF	12:0071cb144c7a	6680	{
JMF	12:0071cb144c7a	6681	MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad application data message" ) );
JMF	12:0071cb144c7a	6682	return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
JMF	12:0071cb144c7a	6683	}
JMF	12:0071cb144c7a	6684
JMF	12:0071cb144c7a	6685	ssl->in_offt = ssl->in_msg;
JMF	12:0071cb144c7a	6686
JMF	12:0071cb144c7a	6687	/* We're going to return something now, cancel timer,
JMF	12:0071cb144c7a	6688	* except if handshake (renegotiation) is in progress */
JMF	12:0071cb144c7a	6689	if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	6690	ssl_set_timer( ssl, 0 );
JMF	12:0071cb144c7a	6691
JMF	12:0071cb144c7a	6692	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	6693	/* If we requested renego but received AppData, resend HelloRequest.
JMF	12:0071cb144c7a	6694	* Do it now, after setting in_offt, to avoid taking this branch
JMF	12:0071cb144c7a	6695	* again if ssl_write_hello_request() returns WANT_WRITE */
JMF	12:0071cb144c7a	6696	#if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	6697	if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER &&
JMF	12:0071cb144c7a	6698	ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING )
JMF	12:0071cb144c7a	6699	{
JMF	12:0071cb144c7a	6700	if( ( ret = ssl_resend_hello_request( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6701	{
JMF	12:0071cb144c7a	6702	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_resend_hello_request", ret );
JMF	12:0071cb144c7a	6703	return( ret );
JMF	12:0071cb144c7a	6704	}
JMF	12:0071cb144c7a	6705	}
JMF	12:0071cb144c7a	6706	#endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_SSL_RENEGOTIATION */
JMF	12:0071cb144c7a	6707	#endif
JMF	12:0071cb144c7a	6708	}
JMF	12:0071cb144c7a	6709
JMF	12:0071cb144c7a	6710	n = ( len < ssl->in_msglen )
JMF	12:0071cb144c7a	6711	? len : ssl->in_msglen;
JMF	12:0071cb144c7a	6712
JMF	12:0071cb144c7a	6713	memcpy( buf, ssl->in_offt, n );
JMF	12:0071cb144c7a	6714	ssl->in_msglen -= n;
JMF	12:0071cb144c7a	6715
JMF	12:0071cb144c7a	6716	if( ssl->in_msglen == 0 )
JMF	12:0071cb144c7a	6717	/* all bytes consumed */
JMF	12:0071cb144c7a	6718	ssl->in_offt = NULL;
JMF	12:0071cb144c7a	6719	else
JMF	12:0071cb144c7a	6720	/* more data available */
JMF	12:0071cb144c7a	6721	ssl->in_offt += n;
JMF	12:0071cb144c7a	6722
JMF	12:0071cb144c7a	6723	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= read" ) );
JMF	12:0071cb144c7a	6724
JMF	12:0071cb144c7a	6725	return( (int) n );
JMF	12:0071cb144c7a	6726	}
JMF	12:0071cb144c7a	6727
JMF	12:0071cb144c7a	6728	/*
JMF	12:0071cb144c7a	6729	* Send application data to be encrypted by the SSL layer,
JMF	12:0071cb144c7a	6730	* taking care of max fragment length and buffer size
JMF	12:0071cb144c7a	6731	*/
JMF	12:0071cb144c7a	6732	static int ssl_write_real( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	6733	const unsigned char *buf, size_t len )
JMF	12:0071cb144c7a	6734	{
JMF	12:0071cb144c7a	6735	int ret;
JMF	12:0071cb144c7a	6736	#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
JMF	12:0071cb144c7a	6737	size_t max_len = mbedtls_ssl_get_max_frag_len( ssl );
JMF	12:0071cb144c7a	6738
JMF	12:0071cb144c7a	6739	if( len > max_len )
JMF	12:0071cb144c7a	6740	{
JMF	12:0071cb144c7a	6741	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	6742	if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	6743	{
JMF	12:0071cb144c7a	6744	MBEDTLS_SSL_DEBUG_MSG( 1, ( "fragment larger than the (negotiated) "
JMF	12:0071cb144c7a	6745	"maximum fragment length: %d > %d",
JMF	12:0071cb144c7a	6746	len, max_len ) );
JMF	12:0071cb144c7a	6747	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6748	}
JMF	12:0071cb144c7a	6749	else
JMF	12:0071cb144c7a	6750	#endif
JMF	12:0071cb144c7a	6751	len = max_len;
JMF	12:0071cb144c7a	6752	}
JMF	12:0071cb144c7a	6753	#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
JMF	12:0071cb144c7a	6754
JMF	12:0071cb144c7a	6755	if( ssl->out_left != 0 )
JMF	12:0071cb144c7a	6756	{
JMF	12:0071cb144c7a	6757	if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6758	{
JMF	12:0071cb144c7a	6759	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flush_output", ret );
JMF	12:0071cb144c7a	6760	return( ret );
JMF	12:0071cb144c7a	6761	}
JMF	12:0071cb144c7a	6762	}
JMF	12:0071cb144c7a	6763	else
JMF	12:0071cb144c7a	6764	{
JMF	12:0071cb144c7a	6765	ssl->out_msglen = len;
JMF	12:0071cb144c7a	6766	ssl->out_msgtype = MBEDTLS_SSL_MSG_APPLICATION_DATA;
JMF	12:0071cb144c7a	6767	memcpy( ssl->out_msg, buf, len );
JMF	12:0071cb144c7a	6768
JMF	12:0071cb144c7a	6769	if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6770	{
JMF	12:0071cb144c7a	6771	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret );
JMF	12:0071cb144c7a	6772	return( ret );
JMF	12:0071cb144c7a	6773	}
JMF	12:0071cb144c7a	6774	}
JMF	12:0071cb144c7a	6775
JMF	12:0071cb144c7a	6776	return( (int) len );
JMF	12:0071cb144c7a	6777	}
JMF	12:0071cb144c7a	6778
JMF	12:0071cb144c7a	6779	/*
JMF	12:0071cb144c7a	6780	* Write application data, doing 1/n-1 splitting if necessary.
JMF	12:0071cb144c7a	6781	*
JMF	12:0071cb144c7a	6782	* With non-blocking I/O, ssl_write_real() may return WANT_WRITE,
JMF	12:0071cb144c7a	6783	* then the caller will call us again with the same arguments, so
JMF	12:0071cb144c7a	6784	* remember wether we already did the split or not.
JMF	12:0071cb144c7a	6785	*/
JMF	12:0071cb144c7a	6786	#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
JMF	12:0071cb144c7a	6787	static int ssl_write_split( mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	6788	const unsigned char *buf, size_t len )
JMF	12:0071cb144c7a	6789	{
JMF	12:0071cb144c7a	6790	int ret;
JMF	12:0071cb144c7a	6791
JMF	12:0071cb144c7a	6792	if( ssl->conf->cbc_record_splitting ==
JMF	12:0071cb144c7a	6793	MBEDTLS_SSL_CBC_RECORD_SPLITTING_DISABLED \|\|
JMF	12:0071cb144c7a	6794	len <= 1 \|\|
JMF	12:0071cb144c7a	6795	ssl->minor_ver > MBEDTLS_SSL_MINOR_VERSION_1 \|\|
JMF	12:0071cb144c7a	6796	mbedtls_cipher_get_cipher_mode( &ssl->transform_out->cipher_ctx_enc )
JMF	12:0071cb144c7a	6797	!= MBEDTLS_MODE_CBC )
JMF	12:0071cb144c7a	6798	{
JMF	12:0071cb144c7a	6799	return( ssl_write_real( ssl, buf, len ) );
JMF	12:0071cb144c7a	6800	}
JMF	12:0071cb144c7a	6801
JMF	12:0071cb144c7a	6802	if( ssl->split_done == 0 )
JMF	12:0071cb144c7a	6803	{
JMF	12:0071cb144c7a	6804	if( ( ret = ssl_write_real( ssl, buf, 1 ) ) <= 0 )
JMF	12:0071cb144c7a	6805	return( ret );
JMF	12:0071cb144c7a	6806	ssl->split_done = 1;
JMF	12:0071cb144c7a	6807	}
JMF	12:0071cb144c7a	6808
JMF	12:0071cb144c7a	6809	if( ( ret = ssl_write_real( ssl, buf + 1, len - 1 ) ) <= 0 )
JMF	12:0071cb144c7a	6810	return( ret );
JMF	12:0071cb144c7a	6811	ssl->split_done = 0;
JMF	12:0071cb144c7a	6812
JMF	12:0071cb144c7a	6813	return( ret + 1 );
JMF	12:0071cb144c7a	6814	}
JMF	12:0071cb144c7a	6815	#endif /* MBEDTLS_SSL_CBC_RECORD_SPLITTING */
JMF	12:0071cb144c7a	6816
JMF	12:0071cb144c7a	6817	/*
JMF	12:0071cb144c7a	6818	* Write application data (public-facing wrapper)
JMF	12:0071cb144c7a	6819	*/
JMF	12:0071cb144c7a	6820	int mbedtls_ssl_write( mbedtls_ssl_context ssl, const unsigned char buf, size_t len )
JMF	12:0071cb144c7a	6821	{
JMF	12:0071cb144c7a	6822	int ret;
JMF	12:0071cb144c7a	6823
JMF	12:0071cb144c7a	6824	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write" ) );
JMF	12:0071cb144c7a	6825
JMF	12:0071cb144c7a	6826	if( ssl == NULL \|\| ssl->conf == NULL )
JMF	12:0071cb144c7a	6827	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6828
JMF	12:0071cb144c7a	6829	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	6830	if( ( ret = ssl_check_ctr_renegotiate( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6831	{
JMF	12:0071cb144c7a	6832	MBEDTLS_SSL_DEBUG_RET( 1, "ssl_check_ctr_renegotiate", ret );
JMF	12:0071cb144c7a	6833	return( ret );
JMF	12:0071cb144c7a	6834	}
JMF	12:0071cb144c7a	6835	#endif
JMF	12:0071cb144c7a	6836
JMF	12:0071cb144c7a	6837	if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	6838	{
JMF	12:0071cb144c7a	6839	if( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 )
JMF	12:0071cb144c7a	6840	{
JMF	12:0071cb144c7a	6841	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_handshake", ret );
JMF	12:0071cb144c7a	6842	return( ret );
JMF	12:0071cb144c7a	6843	}
JMF	12:0071cb144c7a	6844	}
JMF	12:0071cb144c7a	6845
JMF	12:0071cb144c7a	6846	#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
JMF	12:0071cb144c7a	6847	ret = ssl_write_split( ssl, buf, len );
JMF	12:0071cb144c7a	6848	#else
JMF	12:0071cb144c7a	6849	ret = ssl_write_real( ssl, buf, len );
JMF	12:0071cb144c7a	6850	#endif
JMF	12:0071cb144c7a	6851
JMF	12:0071cb144c7a	6852	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write" ) );
JMF	12:0071cb144c7a	6853
JMF	12:0071cb144c7a	6854	return( ret );
JMF	12:0071cb144c7a	6855	}
JMF	12:0071cb144c7a	6856
JMF	12:0071cb144c7a	6857	/*
JMF	12:0071cb144c7a	6858	* Notify the peer that the connection is being closed
JMF	12:0071cb144c7a	6859	*/
JMF	12:0071cb144c7a	6860	int mbedtls_ssl_close_notify( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	6861	{
JMF	12:0071cb144c7a	6862	int ret;
JMF	12:0071cb144c7a	6863
JMF	12:0071cb144c7a	6864	if( ssl == NULL \|\| ssl->conf == NULL )
JMF	12:0071cb144c7a	6865	return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
JMF	12:0071cb144c7a	6866
JMF	12:0071cb144c7a	6867	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write close notify" ) );
JMF	12:0071cb144c7a	6868
JMF	12:0071cb144c7a	6869	if( ssl->out_left != 0 )
JMF	12:0071cb144c7a	6870	return( mbedtls_ssl_flush_output( ssl ) );
JMF	12:0071cb144c7a	6871
JMF	12:0071cb144c7a	6872	if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER )
JMF	12:0071cb144c7a	6873	{
JMF	12:0071cb144c7a	6874	if( ( ret = mbedtls_ssl_send_alert_message( ssl,
JMF	12:0071cb144c7a	6875	MBEDTLS_SSL_ALERT_LEVEL_WARNING,
JMF	12:0071cb144c7a	6876	MBEDTLS_SSL_ALERT_MSG_CLOSE_NOTIFY ) ) != 0 )
JMF	12:0071cb144c7a	6877	{
JMF	12:0071cb144c7a	6878	MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_send_alert_message", ret );
JMF	12:0071cb144c7a	6879	return( ret );
JMF	12:0071cb144c7a	6880	}
JMF	12:0071cb144c7a	6881	}
JMF	12:0071cb144c7a	6882
JMF	12:0071cb144c7a	6883	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write close notify" ) );
JMF	12:0071cb144c7a	6884
JMF	12:0071cb144c7a	6885	return( 0 );
JMF	12:0071cb144c7a	6886	}
JMF	12:0071cb144c7a	6887
JMF	12:0071cb144c7a	6888	void mbedtls_ssl_transform_free( mbedtls_ssl_transform *transform )
JMF	12:0071cb144c7a	6889	{
JMF	12:0071cb144c7a	6890	if( transform == NULL )
JMF	12:0071cb144c7a	6891	return;
JMF	12:0071cb144c7a	6892
JMF	12:0071cb144c7a	6893	#if defined(MBEDTLS_ZLIB_SUPPORT)
JMF	12:0071cb144c7a	6894	deflateEnd( &transform->ctx_deflate );
JMF	12:0071cb144c7a	6895	inflateEnd( &transform->ctx_inflate );
JMF	12:0071cb144c7a	6896	#endif
JMF	12:0071cb144c7a	6897
JMF	12:0071cb144c7a	6898	mbedtls_cipher_free( &transform->cipher_ctx_enc );
JMF	12:0071cb144c7a	6899	mbedtls_cipher_free( &transform->cipher_ctx_dec );
JMF	12:0071cb144c7a	6900
JMF	12:0071cb144c7a	6901	mbedtls_md_free( &transform->md_ctx_enc );
JMF	12:0071cb144c7a	6902	mbedtls_md_free( &transform->md_ctx_dec );
JMF	12:0071cb144c7a	6903
JMF	12:0071cb144c7a	6904	mbedtls_zeroize( transform, sizeof( mbedtls_ssl_transform ) );
JMF	12:0071cb144c7a	6905	}
JMF	12:0071cb144c7a	6906
JMF	12:0071cb144c7a	6907	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	6908	static void ssl_key_cert_free( mbedtls_ssl_key_cert *key_cert )
JMF	12:0071cb144c7a	6909	{
JMF	12:0071cb144c7a	6910	mbedtls_ssl_key_cert cur = key_cert, next;
JMF	12:0071cb144c7a	6911
JMF	12:0071cb144c7a	6912	while( cur != NULL )
JMF	12:0071cb144c7a	6913	{
JMF	12:0071cb144c7a	6914	next = cur->next;
JMF	12:0071cb144c7a	6915	mbedtls_free( cur );
JMF	12:0071cb144c7a	6916	cur = next;
JMF	12:0071cb144c7a	6917	}
JMF	12:0071cb144c7a	6918	}
JMF	12:0071cb144c7a	6919	#endif /* MBEDTLS_X509_CRT_PARSE_C */
JMF	12:0071cb144c7a	6920
JMF	12:0071cb144c7a	6921	void mbedtls_ssl_handshake_free( mbedtls_ssl_handshake_params *handshake )
JMF	12:0071cb144c7a	6922	{
JMF	12:0071cb144c7a	6923	if( handshake == NULL )
JMF	12:0071cb144c7a	6924	return;
JMF	12:0071cb144c7a	6925
JMF	12:0071cb144c7a	6926	#if defined(MBEDTLS_SSL_PROTO_SSL3) \|\| defined(MBEDTLS_SSL_PROTO_TLS1) \|\| \
JMF	12:0071cb144c7a	6927	defined(MBEDTLS_SSL_PROTO_TLS1_1)
JMF	12:0071cb144c7a	6928	mbedtls_md5_free( &handshake->fin_md5 );
JMF	12:0071cb144c7a	6929	mbedtls_sha1_free( &handshake->fin_sha1 );
JMF	12:0071cb144c7a	6930	#endif
JMF	12:0071cb144c7a	6931	#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
JMF	12:0071cb144c7a	6932	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	6933	mbedtls_sha256_free( &handshake->fin_sha256 );
JMF	12:0071cb144c7a	6934	#endif
JMF	12:0071cb144c7a	6935	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	6936	mbedtls_sha512_free( &handshake->fin_sha512 );
JMF	12:0071cb144c7a	6937	#endif
JMF	12:0071cb144c7a	6938	#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
JMF	12:0071cb144c7a	6939
JMF	12:0071cb144c7a	6940	#if defined(MBEDTLS_DHM_C)
JMF	12:0071cb144c7a	6941	mbedtls_dhm_free( &handshake->dhm_ctx );
JMF	12:0071cb144c7a	6942	#endif
JMF	12:0071cb144c7a	6943	#if defined(MBEDTLS_ECDH_C)
JMF	12:0071cb144c7a	6944	mbedtls_ecdh_free( &handshake->ecdh_ctx );
JMF	12:0071cb144c7a	6945	#endif
JMF	12:0071cb144c7a	6946	#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
JMF	12:0071cb144c7a	6947	mbedtls_ecjpake_free( &handshake->ecjpake_ctx );
JMF	12:0071cb144c7a	6948	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	6949	mbedtls_free( handshake->ecjpake_cache );
JMF	12:0071cb144c7a	6950	handshake->ecjpake_cache = NULL;
JMF	12:0071cb144c7a	6951	handshake->ecjpake_cache_len = 0;
JMF	12:0071cb144c7a	6952	#endif
JMF	12:0071cb144c7a	6953	#endif
JMF	12:0071cb144c7a	6954
JMF	12:0071cb144c7a	6955	#if defined(MBEDTLS_ECDH_C) \|\| defined(MBEDTLS_ECDSA_C) \|\| \
JMF	12:0071cb144c7a	6956	defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
JMF	12:0071cb144c7a	6957	/* explicit void pointer cast for buggy MS compiler */
JMF	12:0071cb144c7a	6958	mbedtls_free( (void *) handshake->curves );
JMF	12:0071cb144c7a	6959	#endif
JMF	12:0071cb144c7a	6960
JMF	12:0071cb144c7a	6961	#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
JMF	12:0071cb144c7a	6962	if( handshake->psk != NULL )
JMF	12:0071cb144c7a	6963	{
JMF	12:0071cb144c7a	6964	mbedtls_zeroize( handshake->psk, handshake->psk_len );
JMF	12:0071cb144c7a	6965	mbedtls_free( handshake->psk );
JMF	12:0071cb144c7a	6966	}
JMF	12:0071cb144c7a	6967	#endif
JMF	12:0071cb144c7a	6968
JMF	12:0071cb144c7a	6969	#if defined(MBEDTLS_X509_CRT_PARSE_C) && \
JMF	12:0071cb144c7a	6970	defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
JMF	12:0071cb144c7a	6971	/*
JMF	12:0071cb144c7a	6972	* Free only the linked list wrapper, not the keys themselves
JMF	12:0071cb144c7a	6973	* since the belong to the SNI callback
JMF	12:0071cb144c7a	6974	*/
JMF	12:0071cb144c7a	6975	if( handshake->sni_key_cert != NULL )
JMF	12:0071cb144c7a	6976	{
JMF	12:0071cb144c7a	6977	mbedtls_ssl_key_cert cur = handshake->sni_key_cert, next;
JMF	12:0071cb144c7a	6978
JMF	12:0071cb144c7a	6979	while( cur != NULL )
JMF	12:0071cb144c7a	6980	{
JMF	12:0071cb144c7a	6981	next = cur->next;
JMF	12:0071cb144c7a	6982	mbedtls_free( cur );
JMF	12:0071cb144c7a	6983	cur = next;
JMF	12:0071cb144c7a	6984	}
JMF	12:0071cb144c7a	6985	}
JMF	12:0071cb144c7a	6986	#endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_SSL_SERVER_NAME_INDICATION */
JMF	12:0071cb144c7a	6987
JMF	12:0071cb144c7a	6988	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	6989	mbedtls_free( handshake->verify_cookie );
JMF	12:0071cb144c7a	6990	mbedtls_free( handshake->hs_msg );
JMF	12:0071cb144c7a	6991	ssl_flight_free( handshake->flight );
JMF	12:0071cb144c7a	6992	#endif
JMF	12:0071cb144c7a	6993
JMF	12:0071cb144c7a	6994	mbedtls_zeroize( handshake, sizeof( mbedtls_ssl_handshake_params ) );
JMF	12:0071cb144c7a	6995	}
JMF	12:0071cb144c7a	6996
JMF	12:0071cb144c7a	6997	void mbedtls_ssl_session_free( mbedtls_ssl_session *session )
JMF	12:0071cb144c7a	6998	{
JMF	12:0071cb144c7a	6999	if( session == NULL )
JMF	12:0071cb144c7a	7000	return;
JMF	12:0071cb144c7a	7001
JMF	12:0071cb144c7a	7002	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	7003	if( session->peer_cert != NULL )
JMF	12:0071cb144c7a	7004	{
JMF	12:0071cb144c7a	7005	mbedtls_x509_crt_free( session->peer_cert );
JMF	12:0071cb144c7a	7006	mbedtls_free( session->peer_cert );
JMF	12:0071cb144c7a	7007	}
JMF	12:0071cb144c7a	7008	#endif
JMF	12:0071cb144c7a	7009
JMF	12:0071cb144c7a	7010	#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	7011	mbedtls_free( session->ticket );
JMF	12:0071cb144c7a	7012	#endif
JMF	12:0071cb144c7a	7013
JMF	12:0071cb144c7a	7014	mbedtls_zeroize( session, sizeof( mbedtls_ssl_session ) );
JMF	12:0071cb144c7a	7015	}
JMF	12:0071cb144c7a	7016
JMF	12:0071cb144c7a	7017	/*
JMF	12:0071cb144c7a	7018	* Free an SSL context
JMF	12:0071cb144c7a	7019	*/
JMF	12:0071cb144c7a	7020	void mbedtls_ssl_free( mbedtls_ssl_context *ssl )
JMF	12:0071cb144c7a	7021	{
JMF	12:0071cb144c7a	7022	if( ssl == NULL )
JMF	12:0071cb144c7a	7023	return;
JMF	12:0071cb144c7a	7024
JMF	12:0071cb144c7a	7025	MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> free" ) );
JMF	12:0071cb144c7a	7026
JMF	12:0071cb144c7a	7027	if( ssl->out_buf != NULL )
JMF	12:0071cb144c7a	7028	{
JMF	12:0071cb144c7a	7029	mbedtls_zeroize( ssl->out_buf, MBEDTLS_SSL_BUFFER_LEN );
JMF	12:0071cb144c7a	7030	mbedtls_free( ssl->out_buf );
JMF	12:0071cb144c7a	7031	}
JMF	12:0071cb144c7a	7032
JMF	12:0071cb144c7a	7033	if( ssl->in_buf != NULL )
JMF	12:0071cb144c7a	7034	{
JMF	12:0071cb144c7a	7035	mbedtls_zeroize( ssl->in_buf, MBEDTLS_SSL_BUFFER_LEN );
JMF	12:0071cb144c7a	7036	mbedtls_free( ssl->in_buf );
JMF	12:0071cb144c7a	7037	}
JMF	12:0071cb144c7a	7038
JMF	12:0071cb144c7a	7039	#if defined(MBEDTLS_ZLIB_SUPPORT)
JMF	12:0071cb144c7a	7040	if( ssl->compress_buf != NULL )
JMF	12:0071cb144c7a	7041	{
JMF	12:0071cb144c7a	7042	mbedtls_zeroize( ssl->compress_buf, MBEDTLS_SSL_BUFFER_LEN );
JMF	12:0071cb144c7a	7043	mbedtls_free( ssl->compress_buf );
JMF	12:0071cb144c7a	7044	}
JMF	12:0071cb144c7a	7045	#endif
JMF	12:0071cb144c7a	7046
JMF	12:0071cb144c7a	7047	if( ssl->transform )
JMF	12:0071cb144c7a	7048	{
JMF	12:0071cb144c7a	7049	mbedtls_ssl_transform_free( ssl->transform );
JMF	12:0071cb144c7a	7050	mbedtls_free( ssl->transform );
JMF	12:0071cb144c7a	7051	}
JMF	12:0071cb144c7a	7052
JMF	12:0071cb144c7a	7053	if( ssl->handshake )
JMF	12:0071cb144c7a	7054	{
JMF	12:0071cb144c7a	7055	mbedtls_ssl_handshake_free( ssl->handshake );
JMF	12:0071cb144c7a	7056	mbedtls_ssl_transform_free( ssl->transform_negotiate );
JMF	12:0071cb144c7a	7057	mbedtls_ssl_session_free( ssl->session_negotiate );
JMF	12:0071cb144c7a	7058
JMF	12:0071cb144c7a	7059	mbedtls_free( ssl->handshake );
JMF	12:0071cb144c7a	7060	mbedtls_free( ssl->transform_negotiate );
JMF	12:0071cb144c7a	7061	mbedtls_free( ssl->session_negotiate );
JMF	12:0071cb144c7a	7062	}
JMF	12:0071cb144c7a	7063
JMF	12:0071cb144c7a	7064	if( ssl->session )
JMF	12:0071cb144c7a	7065	{
JMF	12:0071cb144c7a	7066	mbedtls_ssl_session_free( ssl->session );
JMF	12:0071cb144c7a	7067	mbedtls_free( ssl->session );
JMF	12:0071cb144c7a	7068	}
JMF	12:0071cb144c7a	7069
JMF	12:0071cb144c7a	7070	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	7071	if( ssl->hostname != NULL )
JMF	12:0071cb144c7a	7072	{
JMF	12:0071cb144c7a	7073	mbedtls_zeroize( ssl->hostname, strlen( ssl->hostname ) );
JMF	12:0071cb144c7a	7074	mbedtls_free( ssl->hostname );
JMF	12:0071cb144c7a	7075	}
JMF	12:0071cb144c7a	7076	#endif
JMF	12:0071cb144c7a	7077
JMF	12:0071cb144c7a	7078	#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL)
JMF	12:0071cb144c7a	7079	if( mbedtls_ssl_hw_record_finish != NULL )
JMF	12:0071cb144c7a	7080	{
JMF	12:0071cb144c7a	7081	MBEDTLS_SSL_DEBUG_MSG( 2, ( "going for mbedtls_ssl_hw_record_finish()" ) );
JMF	12:0071cb144c7a	7082	mbedtls_ssl_hw_record_finish( ssl );
JMF	12:0071cb144c7a	7083	}
JMF	12:0071cb144c7a	7084	#endif
JMF	12:0071cb144c7a	7085
JMF	12:0071cb144c7a	7086	#if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	7087	mbedtls_free( ssl->cli_id );
JMF	12:0071cb144c7a	7088	#endif
JMF	12:0071cb144c7a	7089
JMF	12:0071cb144c7a	7090	MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= free" ) );
JMF	12:0071cb144c7a	7091
JMF	12:0071cb144c7a	7092	/* Actually clear after last debug message */
JMF	12:0071cb144c7a	7093	mbedtls_zeroize( ssl, sizeof( mbedtls_ssl_context ) );
JMF	12:0071cb144c7a	7094	}
JMF	12:0071cb144c7a	7095
JMF	12:0071cb144c7a	7096	/*
JMF	12:0071cb144c7a	7097	* Initialze mbedtls_ssl_config
JMF	12:0071cb144c7a	7098	*/
JMF	12:0071cb144c7a	7099	void mbedtls_ssl_config_init( mbedtls_ssl_config *conf )
JMF	12:0071cb144c7a	7100	{
JMF	12:0071cb144c7a	7101	memset( conf, 0, sizeof( mbedtls_ssl_config ) );
JMF	12:0071cb144c7a	7102	}
JMF	12:0071cb144c7a	7103
JMF	12:0071cb144c7a	7104	#if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED)
JMF	12:0071cb144c7a	7105	static int ssl_preset_default_hashes[] = {
JMF	12:0071cb144c7a	7106	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	7107	MBEDTLS_MD_SHA512,
JMF	12:0071cb144c7a	7108	MBEDTLS_MD_SHA384,
JMF	12:0071cb144c7a	7109	#endif
JMF	12:0071cb144c7a	7110	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	7111	MBEDTLS_MD_SHA256,
JMF	12:0071cb144c7a	7112	MBEDTLS_MD_SHA224,
JMF	12:0071cb144c7a	7113	#endif
JMF	12:0071cb144c7a	7114	#if defined(MBEDTLS_SHA1_C)
JMF	12:0071cb144c7a	7115	MBEDTLS_MD_SHA1,
JMF	12:0071cb144c7a	7116	#endif
JMF	12:0071cb144c7a	7117	MBEDTLS_MD_NONE
JMF	12:0071cb144c7a	7118	};
JMF	12:0071cb144c7a	7119	#endif
JMF	12:0071cb144c7a	7120
JMF	12:0071cb144c7a	7121	static int ssl_preset_suiteb_ciphersuites[] = {
JMF	12:0071cb144c7a	7122	MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
JMF	12:0071cb144c7a	7123	MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
JMF	12:0071cb144c7a	7124	0
JMF	12:0071cb144c7a	7125	};
JMF	12:0071cb144c7a	7126
JMF	12:0071cb144c7a	7127	#if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED)
JMF	12:0071cb144c7a	7128	static int ssl_preset_suiteb_hashes[] = {
JMF	12:0071cb144c7a	7129	MBEDTLS_MD_SHA256,
JMF	12:0071cb144c7a	7130	MBEDTLS_MD_SHA384,
JMF	12:0071cb144c7a	7131	MBEDTLS_MD_NONE
JMF	12:0071cb144c7a	7132	};
JMF	12:0071cb144c7a	7133	#endif
JMF	12:0071cb144c7a	7134
JMF	12:0071cb144c7a	7135	#if defined(MBEDTLS_ECP_C)
JMF	12:0071cb144c7a	7136	static mbedtls_ecp_group_id ssl_preset_suiteb_curves[] = {
JMF	12:0071cb144c7a	7137	MBEDTLS_ECP_DP_SECP256R1,
JMF	12:0071cb144c7a	7138	MBEDTLS_ECP_DP_SECP384R1,
JMF	12:0071cb144c7a	7139	MBEDTLS_ECP_DP_NONE
JMF	12:0071cb144c7a	7140	};
JMF	12:0071cb144c7a	7141	#endif
JMF	12:0071cb144c7a	7142
JMF	12:0071cb144c7a	7143	/*
JMF	12:0071cb144c7a	7144	* Load default in mbedtls_ssl_config
JMF	12:0071cb144c7a	7145	*/
JMF	12:0071cb144c7a	7146	int mbedtls_ssl_config_defaults( mbedtls_ssl_config *conf,
JMF	12:0071cb144c7a	7147	int endpoint, int transport, int preset )
JMF	12:0071cb144c7a	7148	{
JMF	12:0071cb144c7a	7149	#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	7150	int ret;
JMF	12:0071cb144c7a	7151	#endif
JMF	12:0071cb144c7a	7152
JMF	12:0071cb144c7a	7153	/* Use the functions here so that they are covered in tests,
JMF	12:0071cb144c7a	7154	* but otherwise access member directly for efficiency */
JMF	12:0071cb144c7a	7155	mbedtls_ssl_conf_endpoint( conf, endpoint );
JMF	12:0071cb144c7a	7156	mbedtls_ssl_conf_transport( conf, transport );
JMF	12:0071cb144c7a	7157
JMF	12:0071cb144c7a	7158	/*
JMF	12:0071cb144c7a	7159	* Things that are common to all presets
JMF	12:0071cb144c7a	7160	*/
JMF	12:0071cb144c7a	7161	#if defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	7162	if( endpoint == MBEDTLS_SSL_IS_CLIENT )
JMF	12:0071cb144c7a	7163	{
JMF	12:0071cb144c7a	7164	conf->authmode = MBEDTLS_SSL_VERIFY_REQUIRED;
JMF	12:0071cb144c7a	7165	#if defined(MBEDTLS_SSL_SESSION_TICKETS)
JMF	12:0071cb144c7a	7166	conf->session_tickets = MBEDTLS_SSL_SESSION_TICKETS_ENABLED;
JMF	12:0071cb144c7a	7167	#endif
JMF	12:0071cb144c7a	7168	}
JMF	12:0071cb144c7a	7169	#endif
JMF	12:0071cb144c7a	7170
JMF	12:0071cb144c7a	7171	#if defined(MBEDTLS_ARC4_C)
JMF	12:0071cb144c7a	7172	conf->arc4_disabled = MBEDTLS_SSL_ARC4_DISABLED;
JMF	12:0071cb144c7a	7173	#endif
JMF	12:0071cb144c7a	7174
JMF	12:0071cb144c7a	7175	#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
JMF	12:0071cb144c7a	7176	conf->encrypt_then_mac = MBEDTLS_SSL_ETM_ENABLED;
JMF	12:0071cb144c7a	7177	#endif
JMF	12:0071cb144c7a	7178
JMF	12:0071cb144c7a	7179	#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
JMF	12:0071cb144c7a	7180	conf->extended_ms = MBEDTLS_SSL_EXTENDED_MS_ENABLED;
JMF	12:0071cb144c7a	7181	#endif
JMF	12:0071cb144c7a	7182
JMF	12:0071cb144c7a	7183	#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
JMF	12:0071cb144c7a	7184	conf->cbc_record_splitting = MBEDTLS_SSL_CBC_RECORD_SPLITTING_ENABLED;
JMF	12:0071cb144c7a	7185	#endif
JMF	12:0071cb144c7a	7186
JMF	12:0071cb144c7a	7187	#if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	7188	conf->f_cookie_write = ssl_cookie_write_dummy;
JMF	12:0071cb144c7a	7189	conf->f_cookie_check = ssl_cookie_check_dummy;
JMF	12:0071cb144c7a	7190	#endif
JMF	12:0071cb144c7a	7191
JMF	12:0071cb144c7a	7192	#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
JMF	12:0071cb144c7a	7193	conf->anti_replay = MBEDTLS_SSL_ANTI_REPLAY_ENABLED;
JMF	12:0071cb144c7a	7194	#endif
JMF	12:0071cb144c7a	7195
JMF	12:0071cb144c7a	7196	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	7197	conf->hs_timeout_min = MBEDTLS_SSL_DTLS_TIMEOUT_DFL_MIN;
JMF	12:0071cb144c7a	7198	conf->hs_timeout_max = MBEDTLS_SSL_DTLS_TIMEOUT_DFL_MAX;
JMF	12:0071cb144c7a	7199	#endif
JMF	12:0071cb144c7a	7200
JMF	12:0071cb144c7a	7201	#if defined(MBEDTLS_SSL_RENEGOTIATION)
JMF	12:0071cb144c7a	7202	conf->renego_max_records = MBEDTLS_SSL_RENEGO_MAX_RECORDS_DEFAULT;
JMF	12:0071cb144c7a	7203	memset( conf->renego_period, 0xFF, 7 );
JMF	12:0071cb144c7a	7204	conf->renego_period[7] = 0x00;
JMF	12:0071cb144c7a	7205	#endif
JMF	12:0071cb144c7a	7206
JMF	12:0071cb144c7a	7207	#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_SRV_C)
JMF	12:0071cb144c7a	7208	if( endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	7209	{
JMF	12:0071cb144c7a	7210	if( ( ret = mbedtls_ssl_conf_dh_param( conf,
JMF	12:0071cb144c7a	7211	MBEDTLS_DHM_RFC5114_MODP_2048_P,
JMF	12:0071cb144c7a	7212	MBEDTLS_DHM_RFC5114_MODP_2048_G ) ) != 0 )
JMF	12:0071cb144c7a	7213	{
JMF	12:0071cb144c7a	7214	return( ret );
JMF	12:0071cb144c7a	7215	}
JMF	12:0071cb144c7a	7216	}
JMF	12:0071cb144c7a	7217	#endif
JMF	12:0071cb144c7a	7218
JMF	12:0071cb144c7a	7219	/*
JMF	12:0071cb144c7a	7220	* Preset-specific defaults
JMF	12:0071cb144c7a	7221	*/
JMF	12:0071cb144c7a	7222	switch( preset )
JMF	12:0071cb144c7a	7223	{
JMF	12:0071cb144c7a	7224	/*
JMF	12:0071cb144c7a	7225	* NSA Suite B
JMF	12:0071cb144c7a	7226	*/
JMF	12:0071cb144c7a	7227	case MBEDTLS_SSL_PRESET_SUITEB:
JMF	12:0071cb144c7a	7228	conf->min_major_ver = MBEDTLS_SSL_MAJOR_VERSION_3;
JMF	12:0071cb144c7a	7229	conf->min_minor_ver = MBEDTLS_SSL_MINOR_VERSION_3; /* TLS 1.2 */
JMF	12:0071cb144c7a	7230	conf->max_major_ver = MBEDTLS_SSL_MAX_MAJOR_VERSION;
JMF	12:0071cb144c7a	7231	conf->max_minor_ver = MBEDTLS_SSL_MAX_MINOR_VERSION;
JMF	12:0071cb144c7a	7232
JMF	12:0071cb144c7a	7233	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_0] =
JMF	12:0071cb144c7a	7234	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_1] =
JMF	12:0071cb144c7a	7235	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_2] =
JMF	12:0071cb144c7a	7236	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_3] =
JMF	12:0071cb144c7a	7237	ssl_preset_suiteb_ciphersuites;
JMF	12:0071cb144c7a	7238
JMF	12:0071cb144c7a	7239	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	7240	conf->cert_profile = &mbedtls_x509_crt_profile_suiteb;
JMF	12:0071cb144c7a	7241	#endif
JMF	12:0071cb144c7a	7242
JMF	12:0071cb144c7a	7243	#if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED)
JMF	12:0071cb144c7a	7244	conf->sig_hashes = ssl_preset_suiteb_hashes;
JMF	12:0071cb144c7a	7245	#endif
JMF	12:0071cb144c7a	7246
JMF	12:0071cb144c7a	7247	#if defined(MBEDTLS_ECP_C)
JMF	12:0071cb144c7a	7248	conf->curve_list = ssl_preset_suiteb_curves;
JMF	12:0071cb144c7a	7249	#endif
JMF	12:0071cb144c7a	7250	break;
JMF	12:0071cb144c7a	7251
JMF	12:0071cb144c7a	7252	/*
JMF	12:0071cb144c7a	7253	* Default
JMF	12:0071cb144c7a	7254	*/
JMF	12:0071cb144c7a	7255	default:
JMF	12:0071cb144c7a	7256	conf->min_major_ver = MBEDTLS_SSL_MAJOR_VERSION_3;
JMF	12:0071cb144c7a	7257	conf->min_minor_ver = MBEDTLS_SSL_MINOR_VERSION_1; /* TLS 1.0 */
JMF	12:0071cb144c7a	7258	conf->max_major_ver = MBEDTLS_SSL_MAX_MAJOR_VERSION;
JMF	12:0071cb144c7a	7259	conf->max_minor_ver = MBEDTLS_SSL_MAX_MINOR_VERSION;
JMF	12:0071cb144c7a	7260
JMF	12:0071cb144c7a	7261	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	7262	if( transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	7263	conf->min_minor_ver = MBEDTLS_SSL_MINOR_VERSION_2;
JMF	12:0071cb144c7a	7264	#endif
JMF	12:0071cb144c7a	7265
JMF	12:0071cb144c7a	7266	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_0] =
JMF	12:0071cb144c7a	7267	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_1] =
JMF	12:0071cb144c7a	7268	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_2] =
JMF	12:0071cb144c7a	7269	conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_3] =
JMF	12:0071cb144c7a	7270	mbedtls_ssl_list_ciphersuites();
JMF	12:0071cb144c7a	7271
JMF	12:0071cb144c7a	7272	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	7273	conf->cert_profile = &mbedtls_x509_crt_profile_default;
JMF	12:0071cb144c7a	7274	#endif
JMF	12:0071cb144c7a	7275
JMF	12:0071cb144c7a	7276	#if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED)
JMF	12:0071cb144c7a	7277	conf->sig_hashes = ssl_preset_default_hashes;
JMF	12:0071cb144c7a	7278	#endif
JMF	12:0071cb144c7a	7279
JMF	12:0071cb144c7a	7280	#if defined(MBEDTLS_ECP_C)
JMF	12:0071cb144c7a	7281	conf->curve_list = mbedtls_ecp_grp_id_list();
JMF	12:0071cb144c7a	7282	#endif
JMF	12:0071cb144c7a	7283
JMF	12:0071cb144c7a	7284	#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_CLI_C)
JMF	12:0071cb144c7a	7285	conf->dhm_min_bitlen = 1024;
JMF	12:0071cb144c7a	7286	#endif
JMF	12:0071cb144c7a	7287	}
JMF	12:0071cb144c7a	7288
JMF	12:0071cb144c7a	7289	return( 0 );
JMF	12:0071cb144c7a	7290	}
JMF	12:0071cb144c7a	7291
JMF	12:0071cb144c7a	7292	/*
JMF	12:0071cb144c7a	7293	* Free mbedtls_ssl_config
JMF	12:0071cb144c7a	7294	*/
JMF	12:0071cb144c7a	7295	void mbedtls_ssl_config_free( mbedtls_ssl_config *conf )
JMF	12:0071cb144c7a	7296	{
JMF	12:0071cb144c7a	7297	#if defined(MBEDTLS_DHM_C)
JMF	12:0071cb144c7a	7298	mbedtls_mpi_free( &conf->dhm_P );
JMF	12:0071cb144c7a	7299	mbedtls_mpi_free( &conf->dhm_G );
JMF	12:0071cb144c7a	7300	#endif
JMF	12:0071cb144c7a	7301
JMF	12:0071cb144c7a	7302	#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
JMF	12:0071cb144c7a	7303	if( conf->psk != NULL )
JMF	12:0071cb144c7a	7304	{
JMF	12:0071cb144c7a	7305	mbedtls_zeroize( conf->psk, conf->psk_len );
JMF	12:0071cb144c7a	7306	mbedtls_zeroize( conf->psk_identity, conf->psk_identity_len );
JMF	12:0071cb144c7a	7307	mbedtls_free( conf->psk );
JMF	12:0071cb144c7a	7308	mbedtls_free( conf->psk_identity );
JMF	12:0071cb144c7a	7309	conf->psk_len = 0;
JMF	12:0071cb144c7a	7310	conf->psk_identity_len = 0;
JMF	12:0071cb144c7a	7311	}
JMF	12:0071cb144c7a	7312	#endif
JMF	12:0071cb144c7a	7313
JMF	12:0071cb144c7a	7314	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	7315	ssl_key_cert_free( conf->key_cert );
JMF	12:0071cb144c7a	7316	#endif
JMF	12:0071cb144c7a	7317
JMF	12:0071cb144c7a	7318	mbedtls_zeroize( conf, sizeof( mbedtls_ssl_config ) );
JMF	12:0071cb144c7a	7319	}
JMF	12:0071cb144c7a	7320
JMF	12:0071cb144c7a	7321	#if defined(MBEDTLS_PK_C) && \
JMF	12:0071cb144c7a	7322	( defined(MBEDTLS_RSA_C) \|\| defined(MBEDTLS_ECDSA_C) )
JMF	12:0071cb144c7a	7323	/*
JMF	12:0071cb144c7a	7324	* Convert between MBEDTLS_PK_XXX and SSL_SIG_XXX
JMF	12:0071cb144c7a	7325	*/
JMF	12:0071cb144c7a	7326	unsigned char mbedtls_ssl_sig_from_pk( mbedtls_pk_context *pk )
JMF	12:0071cb144c7a	7327	{
JMF	12:0071cb144c7a	7328	#if defined(MBEDTLS_RSA_C)
JMF	12:0071cb144c7a	7329	if( mbedtls_pk_can_do( pk, MBEDTLS_PK_RSA ) )
JMF	12:0071cb144c7a	7330	return( MBEDTLS_SSL_SIG_RSA );
JMF	12:0071cb144c7a	7331	#endif
JMF	12:0071cb144c7a	7332	#if defined(MBEDTLS_ECDSA_C)
JMF	12:0071cb144c7a	7333	if( mbedtls_pk_can_do( pk, MBEDTLS_PK_ECDSA ) )
JMF	12:0071cb144c7a	7334	return( MBEDTLS_SSL_SIG_ECDSA );
JMF	12:0071cb144c7a	7335	#endif
JMF	12:0071cb144c7a	7336	return( MBEDTLS_SSL_SIG_ANON );
JMF	12:0071cb144c7a	7337	}
JMF	12:0071cb144c7a	7338
JMF	12:0071cb144c7a	7339	mbedtls_pk_type_t mbedtls_ssl_pk_alg_from_sig( unsigned char sig )
JMF	12:0071cb144c7a	7340	{
JMF	12:0071cb144c7a	7341	switch( sig )
JMF	12:0071cb144c7a	7342	{
JMF	12:0071cb144c7a	7343	#if defined(MBEDTLS_RSA_C)
JMF	12:0071cb144c7a	7344	case MBEDTLS_SSL_SIG_RSA:
JMF	12:0071cb144c7a	7345	return( MBEDTLS_PK_RSA );
JMF	12:0071cb144c7a	7346	#endif
JMF	12:0071cb144c7a	7347	#if defined(MBEDTLS_ECDSA_C)
JMF	12:0071cb144c7a	7348	case MBEDTLS_SSL_SIG_ECDSA:
JMF	12:0071cb144c7a	7349	return( MBEDTLS_PK_ECDSA );
JMF	12:0071cb144c7a	7350	#endif
JMF	12:0071cb144c7a	7351	default:
JMF	12:0071cb144c7a	7352	return( MBEDTLS_PK_NONE );
JMF	12:0071cb144c7a	7353	}
JMF	12:0071cb144c7a	7354	}
JMF	12:0071cb144c7a	7355	#endif /* MBEDTLS_PK_C && ( MBEDTLS_RSA_C \|\| MBEDTLS_ECDSA_C ) */
JMF	12:0071cb144c7a	7356
JMF	12:0071cb144c7a	7357	/*
JMF	12:0071cb144c7a	7358	* Convert from MBEDTLS_SSL_HASH_XXX to MBEDTLS_MD_XXX
JMF	12:0071cb144c7a	7359	*/
JMF	12:0071cb144c7a	7360	mbedtls_md_type_t mbedtls_ssl_md_alg_from_hash( unsigned char hash )
JMF	12:0071cb144c7a	7361	{
JMF	12:0071cb144c7a	7362	switch( hash )
JMF	12:0071cb144c7a	7363	{
JMF	12:0071cb144c7a	7364	#if defined(MBEDTLS_MD5_C)
JMF	12:0071cb144c7a	7365	case MBEDTLS_SSL_HASH_MD5:
JMF	12:0071cb144c7a	7366	return( MBEDTLS_MD_MD5 );
JMF	12:0071cb144c7a	7367	#endif
JMF	12:0071cb144c7a	7368	#if defined(MBEDTLS_SHA1_C)
JMF	12:0071cb144c7a	7369	case MBEDTLS_SSL_HASH_SHA1:
JMF	12:0071cb144c7a	7370	return( MBEDTLS_MD_SHA1 );
JMF	12:0071cb144c7a	7371	#endif
JMF	12:0071cb144c7a	7372	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	7373	case MBEDTLS_SSL_HASH_SHA224:
JMF	12:0071cb144c7a	7374	return( MBEDTLS_MD_SHA224 );
JMF	12:0071cb144c7a	7375	case MBEDTLS_SSL_HASH_SHA256:
JMF	12:0071cb144c7a	7376	return( MBEDTLS_MD_SHA256 );
JMF	12:0071cb144c7a	7377	#endif
JMF	12:0071cb144c7a	7378	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	7379	case MBEDTLS_SSL_HASH_SHA384:
JMF	12:0071cb144c7a	7380	return( MBEDTLS_MD_SHA384 );
JMF	12:0071cb144c7a	7381	case MBEDTLS_SSL_HASH_SHA512:
JMF	12:0071cb144c7a	7382	return( MBEDTLS_MD_SHA512 );
JMF	12:0071cb144c7a	7383	#endif
JMF	12:0071cb144c7a	7384	default:
JMF	12:0071cb144c7a	7385	return( MBEDTLS_MD_NONE );
JMF	12:0071cb144c7a	7386	}
JMF	12:0071cb144c7a	7387	}
JMF	12:0071cb144c7a	7388
JMF	12:0071cb144c7a	7389	/*
JMF	12:0071cb144c7a	7390	* Convert from MBEDTLS_MD_XXX to MBEDTLS_SSL_HASH_XXX
JMF	12:0071cb144c7a	7391	*/
JMF	12:0071cb144c7a	7392	unsigned char mbedtls_ssl_hash_from_md_alg( int md )
JMF	12:0071cb144c7a	7393	{
JMF	12:0071cb144c7a	7394	switch( md )
JMF	12:0071cb144c7a	7395	{
JMF	12:0071cb144c7a	7396	#if defined(MBEDTLS_MD5_C)
JMF	12:0071cb144c7a	7397	case MBEDTLS_MD_MD5:
JMF	12:0071cb144c7a	7398	return( MBEDTLS_SSL_HASH_MD5 );
JMF	12:0071cb144c7a	7399	#endif
JMF	12:0071cb144c7a	7400	#if defined(MBEDTLS_SHA1_C)
JMF	12:0071cb144c7a	7401	case MBEDTLS_MD_SHA1:
JMF	12:0071cb144c7a	7402	return( MBEDTLS_SSL_HASH_SHA1 );
JMF	12:0071cb144c7a	7403	#endif
JMF	12:0071cb144c7a	7404	#if defined(MBEDTLS_SHA256_C)
JMF	12:0071cb144c7a	7405	case MBEDTLS_MD_SHA224:
JMF	12:0071cb144c7a	7406	return( MBEDTLS_SSL_HASH_SHA224 );
JMF	12:0071cb144c7a	7407	case MBEDTLS_MD_SHA256:
JMF	12:0071cb144c7a	7408	return( MBEDTLS_SSL_HASH_SHA256 );
JMF	12:0071cb144c7a	7409	#endif
JMF	12:0071cb144c7a	7410	#if defined(MBEDTLS_SHA512_C)
JMF	12:0071cb144c7a	7411	case MBEDTLS_MD_SHA384:
JMF	12:0071cb144c7a	7412	return( MBEDTLS_SSL_HASH_SHA384 );
JMF	12:0071cb144c7a	7413	case MBEDTLS_MD_SHA512:
JMF	12:0071cb144c7a	7414	return( MBEDTLS_SSL_HASH_SHA512 );
JMF	12:0071cb144c7a	7415	#endif
JMF	12:0071cb144c7a	7416	default:
JMF	12:0071cb144c7a	7417	return( MBEDTLS_SSL_HASH_NONE );
JMF	12:0071cb144c7a	7418	}
JMF	12:0071cb144c7a	7419	}
JMF	12:0071cb144c7a	7420
JMF	12:0071cb144c7a	7421	#if defined(MBEDTLS_ECP_C)
JMF	12:0071cb144c7a	7422	/*
JMF	12:0071cb144c7a	7423	* Check if a curve proposed by the peer is in our list.
JMF	12:0071cb144c7a	7424	* Return 0 if we're willing to use it, -1 otherwise.
JMF	12:0071cb144c7a	7425	*/
JMF	12:0071cb144c7a	7426	int mbedtls_ssl_check_curve( const mbedtls_ssl_context *ssl, mbedtls_ecp_group_id grp_id )
JMF	12:0071cb144c7a	7427	{
JMF	12:0071cb144c7a	7428	const mbedtls_ecp_group_id *gid;
JMF	12:0071cb144c7a	7429
JMF	12:0071cb144c7a	7430	if( ssl->conf->curve_list == NULL )
JMF	12:0071cb144c7a	7431	return( -1 );
JMF	12:0071cb144c7a	7432
JMF	12:0071cb144c7a	7433	for( gid = ssl->conf->curve_list; *gid != MBEDTLS_ECP_DP_NONE; gid++ )
JMF	12:0071cb144c7a	7434	if( *gid == grp_id )
JMF	12:0071cb144c7a	7435	return( 0 );
JMF	12:0071cb144c7a	7436
JMF	12:0071cb144c7a	7437	return( -1 );
JMF	12:0071cb144c7a	7438	}
JMF	12:0071cb144c7a	7439	#endif /* MBEDTLS_ECP_C */
JMF	12:0071cb144c7a	7440
JMF	12:0071cb144c7a	7441	#if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED)
JMF	12:0071cb144c7a	7442	/*
JMF	12:0071cb144c7a	7443	* Check if a hash proposed by the peer is in our list.
JMF	12:0071cb144c7a	7444	* Return 0 if we're willing to use it, -1 otherwise.
JMF	12:0071cb144c7a	7445	*/
JMF	12:0071cb144c7a	7446	int mbedtls_ssl_check_sig_hash( const mbedtls_ssl_context *ssl,
JMF	12:0071cb144c7a	7447	mbedtls_md_type_t md )
JMF	12:0071cb144c7a	7448	{
JMF	12:0071cb144c7a	7449	const int *cur;
JMF	12:0071cb144c7a	7450
JMF	12:0071cb144c7a	7451	if( ssl->conf->sig_hashes == NULL )
JMF	12:0071cb144c7a	7452	return( -1 );
JMF	12:0071cb144c7a	7453
JMF	12:0071cb144c7a	7454	for( cur = ssl->conf->sig_hashes; *cur != MBEDTLS_MD_NONE; cur++ )
JMF	12:0071cb144c7a	7455	if( *cur == (int) md )
JMF	12:0071cb144c7a	7456	return( 0 );
JMF	12:0071cb144c7a	7457
JMF	12:0071cb144c7a	7458	return( -1 );
JMF	12:0071cb144c7a	7459	}
JMF	12:0071cb144c7a	7460	#endif /* MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED */
JMF	12:0071cb144c7a	7461
JMF	12:0071cb144c7a	7462	#if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF	12:0071cb144c7a	7463	int mbedtls_ssl_check_cert_usage( const mbedtls_x509_crt *cert,
JMF	12:0071cb144c7a	7464	const mbedtls_ssl_ciphersuite_t *ciphersuite,
JMF	12:0071cb144c7a	7465	int cert_endpoint,
JMF	12:0071cb144c7a	7466	uint32_t *flags )
JMF	12:0071cb144c7a	7467	{
JMF	12:0071cb144c7a	7468	int ret = 0;
JMF	12:0071cb144c7a	7469	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
JMF	12:0071cb144c7a	7470	int usage = 0;
JMF	12:0071cb144c7a	7471	#endif
JMF	12:0071cb144c7a	7472	#if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
JMF	12:0071cb144c7a	7473	const char *ext_oid;
JMF	12:0071cb144c7a	7474	size_t ext_len;
JMF	12:0071cb144c7a	7475	#endif
JMF	12:0071cb144c7a	7476
JMF	12:0071cb144c7a	7477	#if !defined(MBEDTLS_X509_CHECK_KEY_USAGE) && \
JMF	12:0071cb144c7a	7478	!defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
JMF	12:0071cb144c7a	7479	((void) cert);
JMF	12:0071cb144c7a	7480	((void) cert_endpoint);
JMF	12:0071cb144c7a	7481	((void) flags);
JMF	12:0071cb144c7a	7482	#endif
JMF	12:0071cb144c7a	7483
JMF	12:0071cb144c7a	7484	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
JMF	12:0071cb144c7a	7485	if( cert_endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	7486	{
JMF	12:0071cb144c7a	7487	/* Server part of the key exchange */
JMF	12:0071cb144c7a	7488	switch( ciphersuite->key_exchange )
JMF	12:0071cb144c7a	7489	{
JMF	12:0071cb144c7a	7490	case MBEDTLS_KEY_EXCHANGE_RSA:
JMF	12:0071cb144c7a	7491	case MBEDTLS_KEY_EXCHANGE_RSA_PSK:
JMF	12:0071cb144c7a	7492	usage = MBEDTLS_X509_KU_KEY_ENCIPHERMENT;
JMF	12:0071cb144c7a	7493	break;
JMF	12:0071cb144c7a	7494
JMF	12:0071cb144c7a	7495	case MBEDTLS_KEY_EXCHANGE_DHE_RSA:
JMF	12:0071cb144c7a	7496	case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
JMF	12:0071cb144c7a	7497	case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
JMF	12:0071cb144c7a	7498	usage = MBEDTLS_X509_KU_DIGITAL_SIGNATURE;
JMF	12:0071cb144c7a	7499	break;
JMF	12:0071cb144c7a	7500
JMF	12:0071cb144c7a	7501	case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
JMF	12:0071cb144c7a	7502	case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA:
JMF	12:0071cb144c7a	7503	usage = MBEDTLS_X509_KU_KEY_AGREEMENT;
JMF	12:0071cb144c7a	7504	break;
JMF	12:0071cb144c7a	7505
JMF	12:0071cb144c7a	7506	/* Don't use default: we want warnings when adding new values */
JMF	12:0071cb144c7a	7507	case MBEDTLS_KEY_EXCHANGE_NONE:
JMF	12:0071cb144c7a	7508	case MBEDTLS_KEY_EXCHANGE_PSK:
JMF	12:0071cb144c7a	7509	case MBEDTLS_KEY_EXCHANGE_DHE_PSK:
JMF	12:0071cb144c7a	7510	case MBEDTLS_KEY_EXCHANGE_ECDHE_PSK:
JMF	12:0071cb144c7a	7511	case MBEDTLS_KEY_EXCHANGE_ECJPAKE:
JMF	12:0071cb144c7a	7512	usage = 0;
JMF	12:0071cb144c7a	7513	}
JMF	12:0071cb144c7a	7514	}
JMF	12:0071cb144c7a	7515	else
JMF	12:0071cb144c7a	7516	{
JMF	12:0071cb144c7a	7517	/* Client auth: we only implement rsa_sign and mbedtls_ecdsa_sign for now */
JMF	12:0071cb144c7a	7518	usage = MBEDTLS_X509_KU_DIGITAL_SIGNATURE;
JMF	12:0071cb144c7a	7519	}
JMF	12:0071cb144c7a	7520
JMF	12:0071cb144c7a	7521	if( mbedtls_x509_crt_check_key_usage( cert, usage ) != 0 )
JMF	12:0071cb144c7a	7522	{
JMF	12:0071cb144c7a	7523	*flags \|= MBEDTLS_X509_BADCERT_KEY_USAGE;
JMF	12:0071cb144c7a	7524	ret = -1;
JMF	12:0071cb144c7a	7525	}
JMF	12:0071cb144c7a	7526	#else
JMF	12:0071cb144c7a	7527	((void) ciphersuite);
JMF	12:0071cb144c7a	7528	#endif /* MBEDTLS_X509_CHECK_KEY_USAGE */
JMF	12:0071cb144c7a	7529
JMF	12:0071cb144c7a	7530	#if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
JMF	12:0071cb144c7a	7531	if( cert_endpoint == MBEDTLS_SSL_IS_SERVER )
JMF	12:0071cb144c7a	7532	{
JMF	12:0071cb144c7a	7533	ext_oid = MBEDTLS_OID_SERVER_AUTH;
JMF	12:0071cb144c7a	7534	ext_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_SERVER_AUTH );
JMF	12:0071cb144c7a	7535	}
JMF	12:0071cb144c7a	7536	else
JMF	12:0071cb144c7a	7537	{
JMF	12:0071cb144c7a	7538	ext_oid = MBEDTLS_OID_CLIENT_AUTH;
JMF	12:0071cb144c7a	7539	ext_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_CLIENT_AUTH );
JMF	12:0071cb144c7a	7540	}
JMF	12:0071cb144c7a	7541
JMF	12:0071cb144c7a	7542	if( mbedtls_x509_crt_check_extended_key_usage( cert, ext_oid, ext_len ) != 0 )
JMF	12:0071cb144c7a	7543	{
JMF	12:0071cb144c7a	7544	*flags \|= MBEDTLS_X509_BADCERT_EXT_KEY_USAGE;
JMF	12:0071cb144c7a	7545	ret = -1;
JMF	12:0071cb144c7a	7546	}
JMF	12:0071cb144c7a	7547	#endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
JMF	12:0071cb144c7a	7548
JMF	12:0071cb144c7a	7549	return( ret );
JMF	12:0071cb144c7a	7550	}
JMF	12:0071cb144c7a	7551	#endif /* MBEDTLS_X509_CRT_PARSE_C */
JMF	12:0071cb144c7a	7552
JMF	12:0071cb144c7a	7553	/*
JMF	12:0071cb144c7a	7554	* Convert version numbers to/from wire format
JMF	12:0071cb144c7a	7555	* and, for DTLS, to/from TLS equivalent.
JMF	12:0071cb144c7a	7556	*
JMF	12:0071cb144c7a	7557	* For TLS this is the identity.
JMF	12:0071cb144c7a	7558	* For DTLS, use one complement (v -> 255 - v, and then map as follows:
JMF	12:0071cb144c7a	7559	* 1.0 <-> 3.2 (DTLS 1.0 is based on TLS 1.1)
JMF	12:0071cb144c7a	7560	* 1.x <-> 3.x+1 for x != 0 (DTLS 1.2 based on TLS 1.2)
JMF	12:0071cb144c7a	7561	*/
JMF	12:0071cb144c7a	7562	void mbedtls_ssl_write_version( int major, int minor, int transport,
JMF	12:0071cb144c7a	7563	unsigned char ver[2] )
JMF	12:0071cb144c7a	7564	{
JMF	12:0071cb144c7a	7565	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	7566	if( transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	7567	{
JMF	12:0071cb144c7a	7568	if( minor == MBEDTLS_SSL_MINOR_VERSION_2 )
JMF	12:0071cb144c7a	7569	--minor; /* DTLS 1.0 stored as TLS 1.1 internally */
JMF	12:0071cb144c7a	7570
JMF	12:0071cb144c7a	7571	ver[0] = (unsigned char)( 255 - ( major - 2 ) );
JMF	12:0071cb144c7a	7572	ver[1] = (unsigned char)( 255 - ( minor - 1 ) );
JMF	12:0071cb144c7a	7573	}
JMF	12:0071cb144c7a	7574	else
JMF	12:0071cb144c7a	7575	#else
JMF	12:0071cb144c7a	7576	((void) transport);
JMF	12:0071cb144c7a	7577	#endif
JMF	12:0071cb144c7a	7578	{
JMF	12:0071cb144c7a	7579	ver[0] = (unsigned char) major;
JMF	12:0071cb144c7a	7580	ver[1] = (unsigned char) minor;
JMF	12:0071cb144c7a	7581	}
JMF	12:0071cb144c7a	7582	}
JMF	12:0071cb144c7a	7583
JMF	12:0071cb144c7a	7584	void mbedtls_ssl_read_version( int major, int minor, int transport,
JMF	12:0071cb144c7a	7585	const unsigned char ver[2] )
JMF	12:0071cb144c7a	7586	{
JMF	12:0071cb144c7a	7587	#if defined(MBEDTLS_SSL_PROTO_DTLS)
JMF	12:0071cb144c7a	7588	if( transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
JMF	12:0071cb144c7a	7589	{
JMF	12:0071cb144c7a	7590	*major = 255 - ver[0] + 2;
JMF	12:0071cb144c7a	7591	*minor = 255 - ver[1] + 1;
JMF	12:0071cb144c7a	7592
JMF	12:0071cb144c7a	7593	if( *minor == MBEDTLS_SSL_MINOR_VERSION_1 )
JMF	12:0071cb144c7a	7594	++minor; / DTLS 1.0 stored as TLS 1.1 internally */
JMF	12:0071cb144c7a	7595	}
JMF	12:0071cb144c7a	7596	else
JMF	12:0071cb144c7a	7597	#else
JMF	12:0071cb144c7a	7598	((void) transport);
JMF	12:0071cb144c7a	7599	#endif
JMF	12:0071cb144c7a	7600	{
JMF	12:0071cb144c7a	7601	*major = ver[0];
JMF	12:0071cb144c7a	7602	*minor = ver[1];
JMF	12:0071cb144c7a	7603	}
JMF	12:0071cb144c7a	7604	}
JMF	12:0071cb144c7a	7605
JMF	12:0071cb144c7a	7606	#endif /* MBEDTLS_SSL_TLS_C */

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Type:	Library
Created:	21 Sep 2016
Imports:	89
Forks:	1
Commits:	30
Dependents:	17
Dependencies:	1
Followers:	17

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Fred Kellerman

mbedtls/source/ssl_tls.c@12:0071cb144c7a, 2016-11-01 (annotated)

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