6_songs-from-the-cloud - This is a fork due to permission issues

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Timothy Beight / Mbed 2 deprecated 6_songs-from-the-cloud

This is a fork due to permission issues

Dependencies: mbed Socket lwip-eth lwip-sys lwip

Fork of 6_songs-from-the-cloud by MakingMusicWorkshop

mbed-client/mbedtls/source/x509_crt.c@0:f7c60d3e7b8a, 2016-05-18 (annotated)

Committer:: maclobdell
Date:: Wed May 18 19:06:32 2016 +0000
Revision:: 0:f7c60d3e7b8a

clean version

Who changed what in which revision?

User	Revision	Line number	New contents of line
maclobdell	0:f7c60d3e7b8a	1	/*
maclobdell	0:f7c60d3e7b8a	2	* X.509 certificate parsing and verification
maclobdell	0:f7c60d3e7b8a	3	*
maclobdell	0:f7c60d3e7b8a	4	* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
maclobdell	0:f7c60d3e7b8a	5	* SPDX-License-Identifier: Apache-2.0
maclobdell	0:f7c60d3e7b8a	6	*
maclobdell	0:f7c60d3e7b8a	7	* Licensed under the Apache License, Version 2.0 (the "License"); you may
maclobdell	0:f7c60d3e7b8a	8	* not use this file except in compliance with the License.
maclobdell	0:f7c60d3e7b8a	9	* You may obtain a copy of the License at
maclobdell	0:f7c60d3e7b8a	10	*
maclobdell	0:f7c60d3e7b8a	11	* http://www.apache.org/licenses/LICENSE-2.0
maclobdell	0:f7c60d3e7b8a	12	*
maclobdell	0:f7c60d3e7b8a	13	* Unless required by applicable law or agreed to in writing, software
maclobdell	0:f7c60d3e7b8a	14	* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
maclobdell	0:f7c60d3e7b8a	15	* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
maclobdell	0:f7c60d3e7b8a	16	* See the License for the specific language governing permissions and
maclobdell	0:f7c60d3e7b8a	17	* limitations under the License.
maclobdell	0:f7c60d3e7b8a	18	*
maclobdell	0:f7c60d3e7b8a	19	* This file is part of mbed TLS (https://tls.mbed.org)
maclobdell	0:f7c60d3e7b8a	20	*/
maclobdell	0:f7c60d3e7b8a	21	/*
maclobdell	0:f7c60d3e7b8a	22	* The ITU-T X.509 standard defines a certificate format for PKI.
maclobdell	0:f7c60d3e7b8a	23	*
maclobdell	0:f7c60d3e7b8a	24	* http://www.ietf.org/rfc/rfc5280.txt (Certificates and CRLs)
maclobdell	0:f7c60d3e7b8a	25	* http://www.ietf.org/rfc/rfc3279.txt (Alg IDs for CRLs)
maclobdell	0:f7c60d3e7b8a	26	* http://www.ietf.org/rfc/rfc2986.txt (CSRs, aka PKCS#10)
maclobdell	0:f7c60d3e7b8a	27	*
maclobdell	0:f7c60d3e7b8a	28	* http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
maclobdell	0:f7c60d3e7b8a	29	* http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
maclobdell	0:f7c60d3e7b8a	30	*/
maclobdell	0:f7c60d3e7b8a	31
maclobdell	0:f7c60d3e7b8a	32	#if !defined(MBEDTLS_CONFIG_FILE)
maclobdell	0:f7c60d3e7b8a	33	#include "mbedtls/config.h"
maclobdell	0:f7c60d3e7b8a	34	#else
maclobdell	0:f7c60d3e7b8a	35	#include MBEDTLS_CONFIG_FILE
maclobdell	0:f7c60d3e7b8a	36	#endif
maclobdell	0:f7c60d3e7b8a	37
maclobdell	0:f7c60d3e7b8a	38	#if defined(MBEDTLS_X509_CRT_PARSE_C)
maclobdell	0:f7c60d3e7b8a	39
maclobdell	0:f7c60d3e7b8a	40	#include "mbedtls/x509_crt.h"
maclobdell	0:f7c60d3e7b8a	41	#include "mbedtls/oid.h"
maclobdell	0:f7c60d3e7b8a	42
maclobdell	0:f7c60d3e7b8a	43	#include <stdio.h>
maclobdell	0:f7c60d3e7b8a	44	#include <string.h>
maclobdell	0:f7c60d3e7b8a	45
maclobdell	0:f7c60d3e7b8a	46	#if defined(MBEDTLS_PEM_PARSE_C)
maclobdell	0:f7c60d3e7b8a	47	#include "mbedtls/pem.h"
maclobdell	0:f7c60d3e7b8a	48	#endif
maclobdell	0:f7c60d3e7b8a	49
maclobdell	0:f7c60d3e7b8a	50	#if defined(MBEDTLS_PLATFORM_C)
maclobdell	0:f7c60d3e7b8a	51	#include "mbedtls/platform.h"
maclobdell	0:f7c60d3e7b8a	52	#else
maclobdell	0:f7c60d3e7b8a	53	#include <stdlib.h>
maclobdell	0:f7c60d3e7b8a	54	#define mbedtls_free free
maclobdell	0:f7c60d3e7b8a	55	#define mbedtls_calloc calloc
maclobdell	0:f7c60d3e7b8a	56	#define mbedtls_snprintf snprintf
maclobdell	0:f7c60d3e7b8a	57	#endif
maclobdell	0:f7c60d3e7b8a	58
maclobdell	0:f7c60d3e7b8a	59	#if defined(MBEDTLS_THREADING_C)
maclobdell	0:f7c60d3e7b8a	60	#include "mbedtls/threading.h"
maclobdell	0:f7c60d3e7b8a	61	#endif
maclobdell	0:f7c60d3e7b8a	62
maclobdell	0:f7c60d3e7b8a	63	#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
maclobdell	0:f7c60d3e7b8a	64	#include <windows.h>
maclobdell	0:f7c60d3e7b8a	65	#else
maclobdell	0:f7c60d3e7b8a	66	#include <time.h>
maclobdell	0:f7c60d3e7b8a	67	#endif
maclobdell	0:f7c60d3e7b8a	68
maclobdell	0:f7c60d3e7b8a	69	#if defined(MBEDTLS_FS_IO)
maclobdell	0:f7c60d3e7b8a	70	#include <stdio.h>
maclobdell	0:f7c60d3e7b8a	71	#if !defined(_WIN32) \|\| defined(EFIX64) \|\| defined(EFI32)
maclobdell	0:f7c60d3e7b8a	72	#include <sys/types.h>
maclobdell	0:f7c60d3e7b8a	73	#include <sys/stat.h>
maclobdell	0:f7c60d3e7b8a	74	#include <dirent.h>
maclobdell	0:f7c60d3e7b8a	75	#endif /* !_WIN32 \|\| EFIX64 \|\| EFI32 */
maclobdell	0:f7c60d3e7b8a	76	#endif
maclobdell	0:f7c60d3e7b8a	77
maclobdell	0:f7c60d3e7b8a	78	/* Implementation that should never be optimized out by the compiler */
maclobdell	0:f7c60d3e7b8a	79	static void mbedtls_zeroize( void *v, size_t n ) {
maclobdell	0:f7c60d3e7b8a	80	volatile unsigned char p = v; while( n-- ) p++ = 0;
maclobdell	0:f7c60d3e7b8a	81	}
maclobdell	0:f7c60d3e7b8a	82
maclobdell	0:f7c60d3e7b8a	83	/*
maclobdell	0:f7c60d3e7b8a	84	* Default profile
maclobdell	0:f7c60d3e7b8a	85	*/
maclobdell	0:f7c60d3e7b8a	86	const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_default =
maclobdell	0:f7c60d3e7b8a	87	{
maclobdell	0:f7c60d3e7b8a	88	/* Hashes from SHA-1 and above */
maclobdell	0:f7c60d3e7b8a	89	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 ) \|
maclobdell	0:f7c60d3e7b8a	90	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_RIPEMD160 ) \|
maclobdell	0:f7c60d3e7b8a	91	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) \|
maclobdell	0:f7c60d3e7b8a	92	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) \|
maclobdell	0:f7c60d3e7b8a	93	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) \|
maclobdell	0:f7c60d3e7b8a	94	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
maclobdell	0:f7c60d3e7b8a	95	0xFFFFFFF, /* Any PK alg */
maclobdell	0:f7c60d3e7b8a	96	0xFFFFFFF, /* Any curve */
maclobdell	0:f7c60d3e7b8a	97	2048,
maclobdell	0:f7c60d3e7b8a	98	};
maclobdell	0:f7c60d3e7b8a	99
maclobdell	0:f7c60d3e7b8a	100	/*
maclobdell	0:f7c60d3e7b8a	101	* Next-default profile
maclobdell	0:f7c60d3e7b8a	102	*/
maclobdell	0:f7c60d3e7b8a	103	const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_next =
maclobdell	0:f7c60d3e7b8a	104	{
maclobdell	0:f7c60d3e7b8a	105	/* Hashes from SHA-256 and above */
maclobdell	0:f7c60d3e7b8a	106	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) \|
maclobdell	0:f7c60d3e7b8a	107	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) \|
maclobdell	0:f7c60d3e7b8a	108	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
maclobdell	0:f7c60d3e7b8a	109	0xFFFFFFF, /* Any PK alg */
maclobdell	0:f7c60d3e7b8a	110	#if defined(MBEDTLS_ECP_C)
maclobdell	0:f7c60d3e7b8a	111	/* Curves at or above 128-bit security level */
maclobdell	0:f7c60d3e7b8a	112	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) \|
maclobdell	0:f7c60d3e7b8a	113	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ) \|
maclobdell	0:f7c60d3e7b8a	114	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP521R1 ) \|
maclobdell	0:f7c60d3e7b8a	115	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP256R1 ) \|
maclobdell	0:f7c60d3e7b8a	116	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP384R1 ) \|
maclobdell	0:f7c60d3e7b8a	117	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP512R1 ) \|
maclobdell	0:f7c60d3e7b8a	118	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256K1 ),
maclobdell	0:f7c60d3e7b8a	119	#else
maclobdell	0:f7c60d3e7b8a	120	0,
maclobdell	0:f7c60d3e7b8a	121	#endif
maclobdell	0:f7c60d3e7b8a	122	2048,
maclobdell	0:f7c60d3e7b8a	123	};
maclobdell	0:f7c60d3e7b8a	124
maclobdell	0:f7c60d3e7b8a	125	/*
maclobdell	0:f7c60d3e7b8a	126	* NSA Suite B Profile
maclobdell	0:f7c60d3e7b8a	127	*/
maclobdell	0:f7c60d3e7b8a	128	const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_suiteb =
maclobdell	0:f7c60d3e7b8a	129	{
maclobdell	0:f7c60d3e7b8a	130	/* Only SHA-256 and 384 */
maclobdell	0:f7c60d3e7b8a	131	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) \|
maclobdell	0:f7c60d3e7b8a	132	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ),
maclobdell	0:f7c60d3e7b8a	133	/* Only ECDSA */
maclobdell	0:f7c60d3e7b8a	134	MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_ECDSA ),
maclobdell	0:f7c60d3e7b8a	135	#if defined(MBEDTLS_ECP_C)
maclobdell	0:f7c60d3e7b8a	136	/* Only NIST P-256 and P-384 */
maclobdell	0:f7c60d3e7b8a	137	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) \|
maclobdell	0:f7c60d3e7b8a	138	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ),
maclobdell	0:f7c60d3e7b8a	139	#else
maclobdell	0:f7c60d3e7b8a	140	0,
maclobdell	0:f7c60d3e7b8a	141	#endif
maclobdell	0:f7c60d3e7b8a	142	0,
maclobdell	0:f7c60d3e7b8a	143	};
maclobdell	0:f7c60d3e7b8a	144
maclobdell	0:f7c60d3e7b8a	145	/*
maclobdell	0:f7c60d3e7b8a	146	* Check md_alg against profile
maclobdell	0:f7c60d3e7b8a	147	* Return 0 if md_alg acceptable for this profile, -1 otherwise
maclobdell	0:f7c60d3e7b8a	148	*/
maclobdell	0:f7c60d3e7b8a	149	static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile,
maclobdell	0:f7c60d3e7b8a	150	mbedtls_md_type_t md_alg )
maclobdell	0:f7c60d3e7b8a	151	{
maclobdell	0:f7c60d3e7b8a	152	if( ( profile->allowed_mds & MBEDTLS_X509_ID_FLAG( md_alg ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	153	return( 0 );
maclobdell	0:f7c60d3e7b8a	154
maclobdell	0:f7c60d3e7b8a	155	return( -1 );
maclobdell	0:f7c60d3e7b8a	156	}
maclobdell	0:f7c60d3e7b8a	157
maclobdell	0:f7c60d3e7b8a	158	/*
maclobdell	0:f7c60d3e7b8a	159	* Check pk_alg against profile
maclobdell	0:f7c60d3e7b8a	160	* Return 0 if pk_alg acceptable for this profile, -1 otherwise
maclobdell	0:f7c60d3e7b8a	161	*/
maclobdell	0:f7c60d3e7b8a	162	static int x509_profile_check_pk_alg( const mbedtls_x509_crt_profile *profile,
maclobdell	0:f7c60d3e7b8a	163	mbedtls_pk_type_t pk_alg )
maclobdell	0:f7c60d3e7b8a	164	{
maclobdell	0:f7c60d3e7b8a	165	if( ( profile->allowed_pks & MBEDTLS_X509_ID_FLAG( pk_alg ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	166	return( 0 );
maclobdell	0:f7c60d3e7b8a	167
maclobdell	0:f7c60d3e7b8a	168	return( -1 );
maclobdell	0:f7c60d3e7b8a	169	}
maclobdell	0:f7c60d3e7b8a	170
maclobdell	0:f7c60d3e7b8a	171	/*
maclobdell	0:f7c60d3e7b8a	172	* Check key against profile
maclobdell	0:f7c60d3e7b8a	173	* Return 0 if pk_alg acceptable for this profile, -1 otherwise
maclobdell	0:f7c60d3e7b8a	174	*/
maclobdell	0:f7c60d3e7b8a	175	static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile,
maclobdell	0:f7c60d3e7b8a	176	mbedtls_pk_type_t pk_alg,
maclobdell	0:f7c60d3e7b8a	177	const mbedtls_pk_context *pk )
maclobdell	0:f7c60d3e7b8a	178	{
maclobdell	0:f7c60d3e7b8a	179	#if defined(MBEDTLS_RSA_C)
maclobdell	0:f7c60d3e7b8a	180	if( pk_alg == MBEDTLS_PK_RSA \|\| pk_alg == MBEDTLS_PK_RSASSA_PSS )
maclobdell	0:f7c60d3e7b8a	181	{
maclobdell	0:f7c60d3e7b8a	182	if( mbedtls_pk_get_bitlen( pk ) >= profile->rsa_min_bitlen )
maclobdell	0:f7c60d3e7b8a	183	return( 0 );
maclobdell	0:f7c60d3e7b8a	184
maclobdell	0:f7c60d3e7b8a	185	return( -1 );
maclobdell	0:f7c60d3e7b8a	186	}
maclobdell	0:f7c60d3e7b8a	187	#endif
maclobdell	0:f7c60d3e7b8a	188
maclobdell	0:f7c60d3e7b8a	189	#if defined(MBEDTLS_ECP_C)
maclobdell	0:f7c60d3e7b8a	190	if( pk_alg == MBEDTLS_PK_ECDSA \|\|
maclobdell	0:f7c60d3e7b8a	191	pk_alg == MBEDTLS_PK_ECKEY \|\|
maclobdell	0:f7c60d3e7b8a	192	pk_alg == MBEDTLS_PK_ECKEY_DH )
maclobdell	0:f7c60d3e7b8a	193	{
maclobdell	0:f7c60d3e7b8a	194	mbedtls_ecp_group_id gid = mbedtls_pk_ec( *pk )->grp.id;
maclobdell	0:f7c60d3e7b8a	195
maclobdell	0:f7c60d3e7b8a	196	if( ( profile->allowed_curves & MBEDTLS_X509_ID_FLAG( gid ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	197	return( 0 );
maclobdell	0:f7c60d3e7b8a	198
maclobdell	0:f7c60d3e7b8a	199	return( -1 );
maclobdell	0:f7c60d3e7b8a	200	}
maclobdell	0:f7c60d3e7b8a	201	#endif
maclobdell	0:f7c60d3e7b8a	202
maclobdell	0:f7c60d3e7b8a	203	return( -1 );
maclobdell	0:f7c60d3e7b8a	204	}
maclobdell	0:f7c60d3e7b8a	205
maclobdell	0:f7c60d3e7b8a	206	/*
maclobdell	0:f7c60d3e7b8a	207	* Version ::= INTEGER { v1(0), v2(1), v3(2) }
maclobdell	0:f7c60d3e7b8a	208	*/
maclobdell	0:f7c60d3e7b8a	209	static int x509_get_version( unsigned char **p,
maclobdell	0:f7c60d3e7b8a	210	const unsigned char *end,
maclobdell	0:f7c60d3e7b8a	211	int *ver )
maclobdell	0:f7c60d3e7b8a	212	{
maclobdell	0:f7c60d3e7b8a	213	int ret;
maclobdell	0:f7c60d3e7b8a	214	size_t len;
maclobdell	0:f7c60d3e7b8a	215
maclobdell	0:f7c60d3e7b8a	216	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
maclobdell	0:f7c60d3e7b8a	217	MBEDTLS_ASN1_CONTEXT_SPECIFIC \| MBEDTLS_ASN1_CONSTRUCTED \| 0 ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	218	{
maclobdell	0:f7c60d3e7b8a	219	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
maclobdell	0:f7c60d3e7b8a	220	{
maclobdell	0:f7c60d3e7b8a	221	*ver = 0;
maclobdell	0:f7c60d3e7b8a	222	return( 0 );
maclobdell	0:f7c60d3e7b8a	223	}
maclobdell	0:f7c60d3e7b8a	224
maclobdell	0:f7c60d3e7b8a	225	return( ret );
maclobdell	0:f7c60d3e7b8a	226	}
maclobdell	0:f7c60d3e7b8a	227
maclobdell	0:f7c60d3e7b8a	228	end = *p + len;
maclobdell	0:f7c60d3e7b8a	229
maclobdell	0:f7c60d3e7b8a	230	if( ( ret = mbedtls_asn1_get_int( p, end, ver ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	231	return( MBEDTLS_ERR_X509_INVALID_VERSION + ret );
maclobdell	0:f7c60d3e7b8a	232
maclobdell	0:f7c60d3e7b8a	233	if( *p != end )
maclobdell	0:f7c60d3e7b8a	234	return( MBEDTLS_ERR_X509_INVALID_VERSION +
maclobdell	0:f7c60d3e7b8a	235	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	236
maclobdell	0:f7c60d3e7b8a	237	return( 0 );
maclobdell	0:f7c60d3e7b8a	238	}
maclobdell	0:f7c60d3e7b8a	239
maclobdell	0:f7c60d3e7b8a	240	/*
maclobdell	0:f7c60d3e7b8a	241	* Validity ::= SEQUENCE {
maclobdell	0:f7c60d3e7b8a	242	* notBefore Time,
maclobdell	0:f7c60d3e7b8a	243	* notAfter Time }
maclobdell	0:f7c60d3e7b8a	244	*/
maclobdell	0:f7c60d3e7b8a	245	static int x509_get_dates( unsigned char **p,
maclobdell	0:f7c60d3e7b8a	246	const unsigned char *end,
maclobdell	0:f7c60d3e7b8a	247	mbedtls_x509_time *from,
maclobdell	0:f7c60d3e7b8a	248	mbedtls_x509_time *to )
maclobdell	0:f7c60d3e7b8a	249	{
maclobdell	0:f7c60d3e7b8a	250	int ret;
maclobdell	0:f7c60d3e7b8a	251	size_t len;
maclobdell	0:f7c60d3e7b8a	252
maclobdell	0:f7c60d3e7b8a	253	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
maclobdell	0:f7c60d3e7b8a	254	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	255	return( MBEDTLS_ERR_X509_INVALID_DATE + ret );
maclobdell	0:f7c60d3e7b8a	256
maclobdell	0:f7c60d3e7b8a	257	end = *p + len;
maclobdell	0:f7c60d3e7b8a	258
maclobdell	0:f7c60d3e7b8a	259	if( ( ret = mbedtls_x509_get_time( p, end, from ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	260	return( ret );
maclobdell	0:f7c60d3e7b8a	261
maclobdell	0:f7c60d3e7b8a	262	if( ( ret = mbedtls_x509_get_time( p, end, to ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	263	return( ret );
maclobdell	0:f7c60d3e7b8a	264
maclobdell	0:f7c60d3e7b8a	265	if( *p != end )
maclobdell	0:f7c60d3e7b8a	266	return( MBEDTLS_ERR_X509_INVALID_DATE +
maclobdell	0:f7c60d3e7b8a	267	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	268
maclobdell	0:f7c60d3e7b8a	269	return( 0 );
maclobdell	0:f7c60d3e7b8a	270	}
maclobdell	0:f7c60d3e7b8a	271
maclobdell	0:f7c60d3e7b8a	272	/*
maclobdell	0:f7c60d3e7b8a	273	* X.509 v2/v3 unique identifier (not parsed)
maclobdell	0:f7c60d3e7b8a	274	*/
maclobdell	0:f7c60d3e7b8a	275	static int x509_get_uid( unsigned char **p,
maclobdell	0:f7c60d3e7b8a	276	const unsigned char *end,
maclobdell	0:f7c60d3e7b8a	277	mbedtls_x509_buf *uid, int n )
maclobdell	0:f7c60d3e7b8a	278	{
maclobdell	0:f7c60d3e7b8a	279	int ret;
maclobdell	0:f7c60d3e7b8a	280
maclobdell	0:f7c60d3e7b8a	281	if( *p == end )
maclobdell	0:f7c60d3e7b8a	282	return( 0 );
maclobdell	0:f7c60d3e7b8a	283
maclobdell	0:f7c60d3e7b8a	284	uid->tag = **p;
maclobdell	0:f7c60d3e7b8a	285
maclobdell	0:f7c60d3e7b8a	286	if( ( ret = mbedtls_asn1_get_tag( p, end, &uid->len,
maclobdell	0:f7c60d3e7b8a	287	MBEDTLS_ASN1_CONTEXT_SPECIFIC \| MBEDTLS_ASN1_CONSTRUCTED \| n ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	288	{
maclobdell	0:f7c60d3e7b8a	289	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
maclobdell	0:f7c60d3e7b8a	290	return( 0 );
maclobdell	0:f7c60d3e7b8a	291
maclobdell	0:f7c60d3e7b8a	292	return( ret );
maclobdell	0:f7c60d3e7b8a	293	}
maclobdell	0:f7c60d3e7b8a	294
maclobdell	0:f7c60d3e7b8a	295	uid->p = *p;
maclobdell	0:f7c60d3e7b8a	296	*p += uid->len;
maclobdell	0:f7c60d3e7b8a	297
maclobdell	0:f7c60d3e7b8a	298	return( 0 );
maclobdell	0:f7c60d3e7b8a	299	}
maclobdell	0:f7c60d3e7b8a	300
maclobdell	0:f7c60d3e7b8a	301	static int x509_get_basic_constraints( unsigned char **p,
maclobdell	0:f7c60d3e7b8a	302	const unsigned char *end,
maclobdell	0:f7c60d3e7b8a	303	int *ca_istrue,
maclobdell	0:f7c60d3e7b8a	304	int *max_pathlen )
maclobdell	0:f7c60d3e7b8a	305	{
maclobdell	0:f7c60d3e7b8a	306	int ret;
maclobdell	0:f7c60d3e7b8a	307	size_t len;
maclobdell	0:f7c60d3e7b8a	308
maclobdell	0:f7c60d3e7b8a	309	/*
maclobdell	0:f7c60d3e7b8a	310	* BasicConstraints ::= SEQUENCE {
maclobdell	0:f7c60d3e7b8a	311	* cA BOOLEAN DEFAULT FALSE,
maclobdell	0:f7c60d3e7b8a	312	* pathLenConstraint INTEGER (0..MAX) OPTIONAL }
maclobdell	0:f7c60d3e7b8a	313	*/
maclobdell	0:f7c60d3e7b8a	314	ca_istrue = 0; / DEFAULT FALSE */
maclobdell	0:f7c60d3e7b8a	315	max_pathlen = 0; / endless */
maclobdell	0:f7c60d3e7b8a	316
maclobdell	0:f7c60d3e7b8a	317	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
maclobdell	0:f7c60d3e7b8a	318	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	319	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	320
maclobdell	0:f7c60d3e7b8a	321	if( *p == end )
maclobdell	0:f7c60d3e7b8a	322	return( 0 );
maclobdell	0:f7c60d3e7b8a	323
maclobdell	0:f7c60d3e7b8a	324	if( ( ret = mbedtls_asn1_get_bool( p, end, ca_istrue ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	325	{
maclobdell	0:f7c60d3e7b8a	326	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
maclobdell	0:f7c60d3e7b8a	327	ret = mbedtls_asn1_get_int( p, end, ca_istrue );
maclobdell	0:f7c60d3e7b8a	328
maclobdell	0:f7c60d3e7b8a	329	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	330	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	331
maclobdell	0:f7c60d3e7b8a	332	if( *ca_istrue != 0 )
maclobdell	0:f7c60d3e7b8a	333	*ca_istrue = 1;
maclobdell	0:f7c60d3e7b8a	334	}
maclobdell	0:f7c60d3e7b8a	335
maclobdell	0:f7c60d3e7b8a	336	if( *p == end )
maclobdell	0:f7c60d3e7b8a	337	return( 0 );
maclobdell	0:f7c60d3e7b8a	338
maclobdell	0:f7c60d3e7b8a	339	if( ( ret = mbedtls_asn1_get_int( p, end, max_pathlen ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	340	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	341
maclobdell	0:f7c60d3e7b8a	342	if( *p != end )
maclobdell	0:f7c60d3e7b8a	343	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	344	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	345
maclobdell	0:f7c60d3e7b8a	346	(*max_pathlen)++;
maclobdell	0:f7c60d3e7b8a	347
maclobdell	0:f7c60d3e7b8a	348	return( 0 );
maclobdell	0:f7c60d3e7b8a	349	}
maclobdell	0:f7c60d3e7b8a	350
maclobdell	0:f7c60d3e7b8a	351	static int x509_get_ns_cert_type( unsigned char **p,
maclobdell	0:f7c60d3e7b8a	352	const unsigned char *end,
maclobdell	0:f7c60d3e7b8a	353	unsigned char *ns_cert_type)
maclobdell	0:f7c60d3e7b8a	354	{
maclobdell	0:f7c60d3e7b8a	355	int ret;
maclobdell	0:f7c60d3e7b8a	356	mbedtls_x509_bitstring bs = { 0, 0, NULL };
maclobdell	0:f7c60d3e7b8a	357
maclobdell	0:f7c60d3e7b8a	358	if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	359	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	360
maclobdell	0:f7c60d3e7b8a	361	if( bs.len != 1 )
maclobdell	0:f7c60d3e7b8a	362	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	363	MBEDTLS_ERR_ASN1_INVALID_LENGTH );
maclobdell	0:f7c60d3e7b8a	364
maclobdell	0:f7c60d3e7b8a	365	/* Get actual bitstring */
maclobdell	0:f7c60d3e7b8a	366	ns_cert_type = bs.p;
maclobdell	0:f7c60d3e7b8a	367	return( 0 );
maclobdell	0:f7c60d3e7b8a	368	}
maclobdell	0:f7c60d3e7b8a	369
maclobdell	0:f7c60d3e7b8a	370	static int x509_get_key_usage( unsigned char **p,
maclobdell	0:f7c60d3e7b8a	371	const unsigned char *end,
maclobdell	0:f7c60d3e7b8a	372	unsigned int *key_usage)
maclobdell	0:f7c60d3e7b8a	373	{
maclobdell	0:f7c60d3e7b8a	374	int ret;
maclobdell	0:f7c60d3e7b8a	375	size_t i;
maclobdell	0:f7c60d3e7b8a	376	mbedtls_x509_bitstring bs = { 0, 0, NULL };
maclobdell	0:f7c60d3e7b8a	377
maclobdell	0:f7c60d3e7b8a	378	if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	379	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	380
maclobdell	0:f7c60d3e7b8a	381	if( bs.len < 1 )
maclobdell	0:f7c60d3e7b8a	382	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	383	MBEDTLS_ERR_ASN1_INVALID_LENGTH );
maclobdell	0:f7c60d3e7b8a	384
maclobdell	0:f7c60d3e7b8a	385	/* Get actual bitstring */
maclobdell	0:f7c60d3e7b8a	386	*key_usage = 0;
maclobdell	0:f7c60d3e7b8a	387	for( i = 0; i < bs.len && i < sizeof( unsigned int ); i++ )
maclobdell	0:f7c60d3e7b8a	388	{
maclobdell	0:f7c60d3e7b8a	389	key_usage \|= (unsigned int) bs.p[i] << (8i);
maclobdell	0:f7c60d3e7b8a	390	}
maclobdell	0:f7c60d3e7b8a	391
maclobdell	0:f7c60d3e7b8a	392	return( 0 );
maclobdell	0:f7c60d3e7b8a	393	}
maclobdell	0:f7c60d3e7b8a	394
maclobdell	0:f7c60d3e7b8a	395	/*
maclobdell	0:f7c60d3e7b8a	396	* ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
maclobdell	0:f7c60d3e7b8a	397	*
maclobdell	0:f7c60d3e7b8a	398	* KeyPurposeId ::= OBJECT IDENTIFIER
maclobdell	0:f7c60d3e7b8a	399	*/
maclobdell	0:f7c60d3e7b8a	400	static int x509_get_ext_key_usage( unsigned char **p,
maclobdell	0:f7c60d3e7b8a	401	const unsigned char *end,
maclobdell	0:f7c60d3e7b8a	402	mbedtls_x509_sequence *ext_key_usage)
maclobdell	0:f7c60d3e7b8a	403	{
maclobdell	0:f7c60d3e7b8a	404	int ret;
maclobdell	0:f7c60d3e7b8a	405
maclobdell	0:f7c60d3e7b8a	406	if( ( ret = mbedtls_asn1_get_sequence_of( p, end, ext_key_usage, MBEDTLS_ASN1_OID ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	407	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	408
maclobdell	0:f7c60d3e7b8a	409	/* Sequence length must be >= 1 */
maclobdell	0:f7c60d3e7b8a	410	if( ext_key_usage->buf.p == NULL )
maclobdell	0:f7c60d3e7b8a	411	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	412	MBEDTLS_ERR_ASN1_INVALID_LENGTH );
maclobdell	0:f7c60d3e7b8a	413
maclobdell	0:f7c60d3e7b8a	414	return( 0 );
maclobdell	0:f7c60d3e7b8a	415	}
maclobdell	0:f7c60d3e7b8a	416
maclobdell	0:f7c60d3e7b8a	417	/*
maclobdell	0:f7c60d3e7b8a	418	* SubjectAltName ::= GeneralNames
maclobdell	0:f7c60d3e7b8a	419	*
maclobdell	0:f7c60d3e7b8a	420	* GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
maclobdell	0:f7c60d3e7b8a	421	*
maclobdell	0:f7c60d3e7b8a	422	* GeneralName ::= CHOICE {
maclobdell	0:f7c60d3e7b8a	423	* otherName [0] OtherName,
maclobdell	0:f7c60d3e7b8a	424	* rfc822Name [1] IA5String,
maclobdell	0:f7c60d3e7b8a	425	* dNSName [2] IA5String,
maclobdell	0:f7c60d3e7b8a	426	* x400Address [3] ORAddress,
maclobdell	0:f7c60d3e7b8a	427	* directoryName [4] Name,
maclobdell	0:f7c60d3e7b8a	428	* ediPartyName [5] EDIPartyName,
maclobdell	0:f7c60d3e7b8a	429	* uniformResourceIdentifier [6] IA5String,
maclobdell	0:f7c60d3e7b8a	430	* iPAddress [7] OCTET STRING,
maclobdell	0:f7c60d3e7b8a	431	* registeredID [8] OBJECT IDENTIFIER }
maclobdell	0:f7c60d3e7b8a	432	*
maclobdell	0:f7c60d3e7b8a	433	* OtherName ::= SEQUENCE {
maclobdell	0:f7c60d3e7b8a	434	* type-id OBJECT IDENTIFIER,
maclobdell	0:f7c60d3e7b8a	435	* value [0] EXPLICIT ANY DEFINED BY type-id }
maclobdell	0:f7c60d3e7b8a	436	*
maclobdell	0:f7c60d3e7b8a	437	* EDIPartyName ::= SEQUENCE {
maclobdell	0:f7c60d3e7b8a	438	* nameAssigner [0] DirectoryString OPTIONAL,
maclobdell	0:f7c60d3e7b8a	439	* partyName [1] DirectoryString }
maclobdell	0:f7c60d3e7b8a	440	*
maclobdell	0:f7c60d3e7b8a	441	* NOTE: we only parse and use dNSName at this point.
maclobdell	0:f7c60d3e7b8a	442	*/
maclobdell	0:f7c60d3e7b8a	443	static int x509_get_subject_alt_name( unsigned char **p,
maclobdell	0:f7c60d3e7b8a	444	const unsigned char *end,
maclobdell	0:f7c60d3e7b8a	445	mbedtls_x509_sequence *subject_alt_name )
maclobdell	0:f7c60d3e7b8a	446	{
maclobdell	0:f7c60d3e7b8a	447	int ret;
maclobdell	0:f7c60d3e7b8a	448	size_t len, tag_len;
maclobdell	0:f7c60d3e7b8a	449	mbedtls_asn1_buf *buf;
maclobdell	0:f7c60d3e7b8a	450	unsigned char tag;
maclobdell	0:f7c60d3e7b8a	451	mbedtls_asn1_sequence *cur = subject_alt_name;
maclobdell	0:f7c60d3e7b8a	452
maclobdell	0:f7c60d3e7b8a	453	/* Get main sequence tag */
maclobdell	0:f7c60d3e7b8a	454	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
maclobdell	0:f7c60d3e7b8a	455	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	456	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	457
maclobdell	0:f7c60d3e7b8a	458	if( *p + len != end )
maclobdell	0:f7c60d3e7b8a	459	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	460	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	461
maclobdell	0:f7c60d3e7b8a	462	while( *p < end )
maclobdell	0:f7c60d3e7b8a	463	{
maclobdell	0:f7c60d3e7b8a	464	if( ( end - *p ) < 1 )
maclobdell	0:f7c60d3e7b8a	465	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	466	MBEDTLS_ERR_ASN1_OUT_OF_DATA );
maclobdell	0:f7c60d3e7b8a	467
maclobdell	0:f7c60d3e7b8a	468	tag = **p;
maclobdell	0:f7c60d3e7b8a	469	(*p)++;
maclobdell	0:f7c60d3e7b8a	470	if( ( ret = mbedtls_asn1_get_len( p, end, &tag_len ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	471	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	472
maclobdell	0:f7c60d3e7b8a	473	if( ( tag & MBEDTLS_ASN1_CONTEXT_SPECIFIC ) != MBEDTLS_ASN1_CONTEXT_SPECIFIC )
maclobdell	0:f7c60d3e7b8a	474	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	475	MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
maclobdell	0:f7c60d3e7b8a	476
maclobdell	0:f7c60d3e7b8a	477	/* Skip everything but DNS name */
maclobdell	0:f7c60d3e7b8a	478	if( tag != ( MBEDTLS_ASN1_CONTEXT_SPECIFIC \| 2 ) )
maclobdell	0:f7c60d3e7b8a	479	{
maclobdell	0:f7c60d3e7b8a	480	*p += tag_len;
maclobdell	0:f7c60d3e7b8a	481	continue;
maclobdell	0:f7c60d3e7b8a	482	}
maclobdell	0:f7c60d3e7b8a	483
maclobdell	0:f7c60d3e7b8a	484	/* Allocate and assign next pointer */
maclobdell	0:f7c60d3e7b8a	485	if( cur->buf.p != NULL )
maclobdell	0:f7c60d3e7b8a	486	{
maclobdell	0:f7c60d3e7b8a	487	if( cur->next != NULL )
maclobdell	0:f7c60d3e7b8a	488	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
maclobdell	0:f7c60d3e7b8a	489
maclobdell	0:f7c60d3e7b8a	490	cur->next = mbedtls_calloc( 1, sizeof( mbedtls_asn1_sequence ) );
maclobdell	0:f7c60d3e7b8a	491
maclobdell	0:f7c60d3e7b8a	492	if( cur->next == NULL )
maclobdell	0:f7c60d3e7b8a	493	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	494	MBEDTLS_ERR_ASN1_ALLOC_FAILED );
maclobdell	0:f7c60d3e7b8a	495
maclobdell	0:f7c60d3e7b8a	496	cur = cur->next;
maclobdell	0:f7c60d3e7b8a	497	}
maclobdell	0:f7c60d3e7b8a	498
maclobdell	0:f7c60d3e7b8a	499	buf = &(cur->buf);
maclobdell	0:f7c60d3e7b8a	500	buf->tag = tag;
maclobdell	0:f7c60d3e7b8a	501	buf->p = *p;
maclobdell	0:f7c60d3e7b8a	502	buf->len = tag_len;
maclobdell	0:f7c60d3e7b8a	503	*p += buf->len;
maclobdell	0:f7c60d3e7b8a	504	}
maclobdell	0:f7c60d3e7b8a	505
maclobdell	0:f7c60d3e7b8a	506	/* Set final sequence entry's next pointer to NULL */
maclobdell	0:f7c60d3e7b8a	507	cur->next = NULL;
maclobdell	0:f7c60d3e7b8a	508
maclobdell	0:f7c60d3e7b8a	509	if( *p != end )
maclobdell	0:f7c60d3e7b8a	510	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	511	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	512
maclobdell	0:f7c60d3e7b8a	513	return( 0 );
maclobdell	0:f7c60d3e7b8a	514	}
maclobdell	0:f7c60d3e7b8a	515
maclobdell	0:f7c60d3e7b8a	516	/*
maclobdell	0:f7c60d3e7b8a	517	* X.509 v3 extensions
maclobdell	0:f7c60d3e7b8a	518	*
maclobdell	0:f7c60d3e7b8a	519	* TODO: Perform all of the basic constraints tests required by the RFC
maclobdell	0:f7c60d3e7b8a	520	* TODO: Set values for undetected extensions to a sane default?
maclobdell	0:f7c60d3e7b8a	521	*
maclobdell	0:f7c60d3e7b8a	522	*/
maclobdell	0:f7c60d3e7b8a	523	static int x509_get_crt_ext( unsigned char **p,
maclobdell	0:f7c60d3e7b8a	524	const unsigned char *end,
maclobdell	0:f7c60d3e7b8a	525	mbedtls_x509_crt *crt )
maclobdell	0:f7c60d3e7b8a	526	{
maclobdell	0:f7c60d3e7b8a	527	int ret;
maclobdell	0:f7c60d3e7b8a	528	size_t len;
maclobdell	0:f7c60d3e7b8a	529	unsigned char end_ext_data, end_ext_octet;
maclobdell	0:f7c60d3e7b8a	530
maclobdell	0:f7c60d3e7b8a	531	if( ( ret = mbedtls_x509_get_ext( p, end, &crt->v3_ext, 3 ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	532	{
maclobdell	0:f7c60d3e7b8a	533	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
maclobdell	0:f7c60d3e7b8a	534	return( 0 );
maclobdell	0:f7c60d3e7b8a	535
maclobdell	0:f7c60d3e7b8a	536	return( ret );
maclobdell	0:f7c60d3e7b8a	537	}
maclobdell	0:f7c60d3e7b8a	538
maclobdell	0:f7c60d3e7b8a	539	while( *p < end )
maclobdell	0:f7c60d3e7b8a	540	{
maclobdell	0:f7c60d3e7b8a	541	/*
maclobdell	0:f7c60d3e7b8a	542	* Extension ::= SEQUENCE {
maclobdell	0:f7c60d3e7b8a	543	* extnID OBJECT IDENTIFIER,
maclobdell	0:f7c60d3e7b8a	544	* critical BOOLEAN DEFAULT FALSE,
maclobdell	0:f7c60d3e7b8a	545	* extnValue OCTET STRING }
maclobdell	0:f7c60d3e7b8a	546	*/
maclobdell	0:f7c60d3e7b8a	547	mbedtls_x509_buf extn_oid = {0, 0, NULL};
maclobdell	0:f7c60d3e7b8a	548	int is_critical = 0; /* DEFAULT FALSE */
maclobdell	0:f7c60d3e7b8a	549	int ext_type = 0;
maclobdell	0:f7c60d3e7b8a	550
maclobdell	0:f7c60d3e7b8a	551	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
maclobdell	0:f7c60d3e7b8a	552	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	553	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	554
maclobdell	0:f7c60d3e7b8a	555	end_ext_data = *p + len;
maclobdell	0:f7c60d3e7b8a	556
maclobdell	0:f7c60d3e7b8a	557	/* Get extension ID */
maclobdell	0:f7c60d3e7b8a	558	extn_oid.tag = **p;
maclobdell	0:f7c60d3e7b8a	559
maclobdell	0:f7c60d3e7b8a	560	if( ( ret = mbedtls_asn1_get_tag( p, end, &extn_oid.len, MBEDTLS_ASN1_OID ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	561	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	562
maclobdell	0:f7c60d3e7b8a	563	extn_oid.p = *p;
maclobdell	0:f7c60d3e7b8a	564	*p += extn_oid.len;
maclobdell	0:f7c60d3e7b8a	565
maclobdell	0:f7c60d3e7b8a	566	if( ( end - *p ) < 1 )
maclobdell	0:f7c60d3e7b8a	567	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	568	MBEDTLS_ERR_ASN1_OUT_OF_DATA );
maclobdell	0:f7c60d3e7b8a	569
maclobdell	0:f7c60d3e7b8a	570	/* Get optional critical */
maclobdell	0:f7c60d3e7b8a	571	if( ( ret = mbedtls_asn1_get_bool( p, end_ext_data, &is_critical ) ) != 0 &&
maclobdell	0:f7c60d3e7b8a	572	( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) )
maclobdell	0:f7c60d3e7b8a	573	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	574
maclobdell	0:f7c60d3e7b8a	575	/* Data should be octet string type */
maclobdell	0:f7c60d3e7b8a	576	if( ( ret = mbedtls_asn1_get_tag( p, end_ext_data, &len,
maclobdell	0:f7c60d3e7b8a	577	MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	578	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
maclobdell	0:f7c60d3e7b8a	579
maclobdell	0:f7c60d3e7b8a	580	end_ext_octet = *p + len;
maclobdell	0:f7c60d3e7b8a	581
maclobdell	0:f7c60d3e7b8a	582	if( end_ext_octet != end_ext_data )
maclobdell	0:f7c60d3e7b8a	583	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	584	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	585
maclobdell	0:f7c60d3e7b8a	586	/*
maclobdell	0:f7c60d3e7b8a	587	* Detect supported extensions
maclobdell	0:f7c60d3e7b8a	588	*/
maclobdell	0:f7c60d3e7b8a	589	ret = mbedtls_oid_get_x509_ext_type( &extn_oid, &ext_type );
maclobdell	0:f7c60d3e7b8a	590
maclobdell	0:f7c60d3e7b8a	591	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	592	{
maclobdell	0:f7c60d3e7b8a	593	/* No parser found, skip extension */
maclobdell	0:f7c60d3e7b8a	594	*p = end_ext_octet;
maclobdell	0:f7c60d3e7b8a	595
maclobdell	0:f7c60d3e7b8a	596	#if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
maclobdell	0:f7c60d3e7b8a	597	if( is_critical )
maclobdell	0:f7c60d3e7b8a	598	{
maclobdell	0:f7c60d3e7b8a	599	/* Data is marked as critical: fail */
maclobdell	0:f7c60d3e7b8a	600	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	601	MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
maclobdell	0:f7c60d3e7b8a	602	}
maclobdell	0:f7c60d3e7b8a	603	#endif
maclobdell	0:f7c60d3e7b8a	604	continue;
maclobdell	0:f7c60d3e7b8a	605	}
maclobdell	0:f7c60d3e7b8a	606
maclobdell	0:f7c60d3e7b8a	607	/* Forbid repeated extensions */
maclobdell	0:f7c60d3e7b8a	608	if( ( crt->ext_types & ext_type ) != 0 )
maclobdell	0:f7c60d3e7b8a	609	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
maclobdell	0:f7c60d3e7b8a	610
maclobdell	0:f7c60d3e7b8a	611	crt->ext_types \|= ext_type;
maclobdell	0:f7c60d3e7b8a	612
maclobdell	0:f7c60d3e7b8a	613	switch( ext_type )
maclobdell	0:f7c60d3e7b8a	614	{
maclobdell	0:f7c60d3e7b8a	615	case MBEDTLS_X509_EXT_BASIC_CONSTRAINTS:
maclobdell	0:f7c60d3e7b8a	616	/* Parse basic constraints */
maclobdell	0:f7c60d3e7b8a	617	if( ( ret = x509_get_basic_constraints( p, end_ext_octet,
maclobdell	0:f7c60d3e7b8a	618	&crt->ca_istrue, &crt->max_pathlen ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	619	return( ret );
maclobdell	0:f7c60d3e7b8a	620	break;
maclobdell	0:f7c60d3e7b8a	621
maclobdell	0:f7c60d3e7b8a	622	case MBEDTLS_X509_EXT_KEY_USAGE:
maclobdell	0:f7c60d3e7b8a	623	/* Parse key usage */
maclobdell	0:f7c60d3e7b8a	624	if( ( ret = x509_get_key_usage( p, end_ext_octet,
maclobdell	0:f7c60d3e7b8a	625	&crt->key_usage ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	626	return( ret );
maclobdell	0:f7c60d3e7b8a	627	break;
maclobdell	0:f7c60d3e7b8a	628
maclobdell	0:f7c60d3e7b8a	629	case MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE:
maclobdell	0:f7c60d3e7b8a	630	/* Parse extended key usage */
maclobdell	0:f7c60d3e7b8a	631	if( ( ret = x509_get_ext_key_usage( p, end_ext_octet,
maclobdell	0:f7c60d3e7b8a	632	&crt->ext_key_usage ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	633	return( ret );
maclobdell	0:f7c60d3e7b8a	634	break;
maclobdell	0:f7c60d3e7b8a	635
maclobdell	0:f7c60d3e7b8a	636	case MBEDTLS_X509_EXT_SUBJECT_ALT_NAME:
maclobdell	0:f7c60d3e7b8a	637	/* Parse subject alt name */
maclobdell	0:f7c60d3e7b8a	638	if( ( ret = x509_get_subject_alt_name( p, end_ext_octet,
maclobdell	0:f7c60d3e7b8a	639	&crt->subject_alt_names ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	640	return( ret );
maclobdell	0:f7c60d3e7b8a	641	break;
maclobdell	0:f7c60d3e7b8a	642
maclobdell	0:f7c60d3e7b8a	643	case MBEDTLS_X509_EXT_NS_CERT_TYPE:
maclobdell	0:f7c60d3e7b8a	644	/* Parse netscape certificate type */
maclobdell	0:f7c60d3e7b8a	645	if( ( ret = x509_get_ns_cert_type( p, end_ext_octet,
maclobdell	0:f7c60d3e7b8a	646	&crt->ns_cert_type ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	647	return( ret );
maclobdell	0:f7c60d3e7b8a	648	break;
maclobdell	0:f7c60d3e7b8a	649
maclobdell	0:f7c60d3e7b8a	650	default:
maclobdell	0:f7c60d3e7b8a	651	return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
maclobdell	0:f7c60d3e7b8a	652	}
maclobdell	0:f7c60d3e7b8a	653	}
maclobdell	0:f7c60d3e7b8a	654
maclobdell	0:f7c60d3e7b8a	655	if( *p != end )
maclobdell	0:f7c60d3e7b8a	656	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
maclobdell	0:f7c60d3e7b8a	657	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	658
maclobdell	0:f7c60d3e7b8a	659	return( 0 );
maclobdell	0:f7c60d3e7b8a	660	}
maclobdell	0:f7c60d3e7b8a	661
maclobdell	0:f7c60d3e7b8a	662	/*
maclobdell	0:f7c60d3e7b8a	663	* Parse and fill a single X.509 certificate in DER format
maclobdell	0:f7c60d3e7b8a	664	*/
maclobdell	0:f7c60d3e7b8a	665	static int x509_crt_parse_der_core( mbedtls_x509_crt crt, const unsigned char buf,
maclobdell	0:f7c60d3e7b8a	666	size_t buflen )
maclobdell	0:f7c60d3e7b8a	667	{
maclobdell	0:f7c60d3e7b8a	668	int ret;
maclobdell	0:f7c60d3e7b8a	669	size_t len;
maclobdell	0:f7c60d3e7b8a	670	unsigned char p, end, *crt_end;
maclobdell	0:f7c60d3e7b8a	671	mbedtls_x509_buf sig_params1, sig_params2, sig_oid2;
maclobdell	0:f7c60d3e7b8a	672
maclobdell	0:f7c60d3e7b8a	673	memset( &sig_params1, 0, sizeof( mbedtls_x509_buf ) );
maclobdell	0:f7c60d3e7b8a	674	memset( &sig_params2, 0, sizeof( mbedtls_x509_buf ) );
maclobdell	0:f7c60d3e7b8a	675	memset( &sig_oid2, 0, sizeof( mbedtls_x509_buf ) );
maclobdell	0:f7c60d3e7b8a	676
maclobdell	0:f7c60d3e7b8a	677	/*
maclobdell	0:f7c60d3e7b8a	678	* Check for valid input
maclobdell	0:f7c60d3e7b8a	679	*/
maclobdell	0:f7c60d3e7b8a	680	if( crt == NULL \|\| buf == NULL )
maclobdell	0:f7c60d3e7b8a	681	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
maclobdell	0:f7c60d3e7b8a	682
maclobdell	0:f7c60d3e7b8a	683	p = mbedtls_calloc( 1, len = buflen );
maclobdell	0:f7c60d3e7b8a	684	if( p == NULL )
maclobdell	0:f7c60d3e7b8a	685	return( MBEDTLS_ERR_X509_ALLOC_FAILED );
maclobdell	0:f7c60d3e7b8a	686
maclobdell	0:f7c60d3e7b8a	687	memcpy( p, buf, buflen );
maclobdell	0:f7c60d3e7b8a	688
maclobdell	0:f7c60d3e7b8a	689	crt->raw.p = p;
maclobdell	0:f7c60d3e7b8a	690	crt->raw.len = len;
maclobdell	0:f7c60d3e7b8a	691	end = p + len;
maclobdell	0:f7c60d3e7b8a	692
maclobdell	0:f7c60d3e7b8a	693	/*
maclobdell	0:f7c60d3e7b8a	694	* Certificate ::= SEQUENCE {
maclobdell	0:f7c60d3e7b8a	695	* tbsCertificate TBSCertificate,
maclobdell	0:f7c60d3e7b8a	696	* signatureAlgorithm AlgorithmIdentifier,
maclobdell	0:f7c60d3e7b8a	697	* signatureValue BIT STRING }
maclobdell	0:f7c60d3e7b8a	698	*/
maclobdell	0:f7c60d3e7b8a	699	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
maclobdell	0:f7c60d3e7b8a	700	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	701	{
maclobdell	0:f7c60d3e7b8a	702	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	703	return( MBEDTLS_ERR_X509_INVALID_FORMAT );
maclobdell	0:f7c60d3e7b8a	704	}
maclobdell	0:f7c60d3e7b8a	705
maclobdell	0:f7c60d3e7b8a	706	if( len > (size_t) ( end - p ) )
maclobdell	0:f7c60d3e7b8a	707	{
maclobdell	0:f7c60d3e7b8a	708	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	709	return( MBEDTLS_ERR_X509_INVALID_FORMAT +
maclobdell	0:f7c60d3e7b8a	710	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	711	}
maclobdell	0:f7c60d3e7b8a	712	crt_end = p + len;
maclobdell	0:f7c60d3e7b8a	713
maclobdell	0:f7c60d3e7b8a	714	/*
maclobdell	0:f7c60d3e7b8a	715	* TBSCertificate ::= SEQUENCE {
maclobdell	0:f7c60d3e7b8a	716	*/
maclobdell	0:f7c60d3e7b8a	717	crt->tbs.p = p;
maclobdell	0:f7c60d3e7b8a	718
maclobdell	0:f7c60d3e7b8a	719	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
maclobdell	0:f7c60d3e7b8a	720	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	721	{
maclobdell	0:f7c60d3e7b8a	722	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	723	return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
maclobdell	0:f7c60d3e7b8a	724	}
maclobdell	0:f7c60d3e7b8a	725
maclobdell	0:f7c60d3e7b8a	726	end = p + len;
maclobdell	0:f7c60d3e7b8a	727	crt->tbs.len = end - crt->tbs.p;
maclobdell	0:f7c60d3e7b8a	728
maclobdell	0:f7c60d3e7b8a	729	/*
maclobdell	0:f7c60d3e7b8a	730	* Version ::= INTEGER { v1(0), v2(1), v3(2) }
maclobdell	0:f7c60d3e7b8a	731	*
maclobdell	0:f7c60d3e7b8a	732	* CertificateSerialNumber ::= INTEGER
maclobdell	0:f7c60d3e7b8a	733	*
maclobdell	0:f7c60d3e7b8a	734	* signature AlgorithmIdentifier
maclobdell	0:f7c60d3e7b8a	735	*/
maclobdell	0:f7c60d3e7b8a	736	if( ( ret = x509_get_version( &p, end, &crt->version ) ) != 0 \|\|
maclobdell	0:f7c60d3e7b8a	737	( ret = mbedtls_x509_get_serial( &p, end, &crt->serial ) ) != 0 \|\|
maclobdell	0:f7c60d3e7b8a	738	( ret = mbedtls_x509_get_alg( &p, end, &crt->sig_oid,
maclobdell	0:f7c60d3e7b8a	739	&sig_params1 ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	740	{
maclobdell	0:f7c60d3e7b8a	741	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	742	return( ret );
maclobdell	0:f7c60d3e7b8a	743	}
maclobdell	0:f7c60d3e7b8a	744
maclobdell	0:f7c60d3e7b8a	745	crt->version++;
maclobdell	0:f7c60d3e7b8a	746
maclobdell	0:f7c60d3e7b8a	747	if( crt->version > 3 )
maclobdell	0:f7c60d3e7b8a	748	{
maclobdell	0:f7c60d3e7b8a	749	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	750	return( MBEDTLS_ERR_X509_UNKNOWN_VERSION );
maclobdell	0:f7c60d3e7b8a	751	}
maclobdell	0:f7c60d3e7b8a	752
maclobdell	0:f7c60d3e7b8a	753	if( ( ret = mbedtls_x509_get_sig_alg( &crt->sig_oid, &sig_params1,
maclobdell	0:f7c60d3e7b8a	754	&crt->sig_md, &crt->sig_pk,
maclobdell	0:f7c60d3e7b8a	755	&crt->sig_opts ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	756	{
maclobdell	0:f7c60d3e7b8a	757	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	758	return( ret );
maclobdell	0:f7c60d3e7b8a	759	}
maclobdell	0:f7c60d3e7b8a	760
maclobdell	0:f7c60d3e7b8a	761	/*
maclobdell	0:f7c60d3e7b8a	762	* issuer Name
maclobdell	0:f7c60d3e7b8a	763	*/
maclobdell	0:f7c60d3e7b8a	764	crt->issuer_raw.p = p;
maclobdell	0:f7c60d3e7b8a	765
maclobdell	0:f7c60d3e7b8a	766	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
maclobdell	0:f7c60d3e7b8a	767	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	768	{
maclobdell	0:f7c60d3e7b8a	769	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	770	return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
maclobdell	0:f7c60d3e7b8a	771	}
maclobdell	0:f7c60d3e7b8a	772
maclobdell	0:f7c60d3e7b8a	773	if( ( ret = mbedtls_x509_get_name( &p, p + len, &crt->issuer ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	774	{
maclobdell	0:f7c60d3e7b8a	775	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	776	return( ret );
maclobdell	0:f7c60d3e7b8a	777	}
maclobdell	0:f7c60d3e7b8a	778
maclobdell	0:f7c60d3e7b8a	779	crt->issuer_raw.len = p - crt->issuer_raw.p;
maclobdell	0:f7c60d3e7b8a	780
maclobdell	0:f7c60d3e7b8a	781	/*
maclobdell	0:f7c60d3e7b8a	782	* Validity ::= SEQUENCE {
maclobdell	0:f7c60d3e7b8a	783	* notBefore Time,
maclobdell	0:f7c60d3e7b8a	784	* notAfter Time }
maclobdell	0:f7c60d3e7b8a	785	*
maclobdell	0:f7c60d3e7b8a	786	*/
maclobdell	0:f7c60d3e7b8a	787	if( ( ret = x509_get_dates( &p, end, &crt->valid_from,
maclobdell	0:f7c60d3e7b8a	788	&crt->valid_to ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	789	{
maclobdell	0:f7c60d3e7b8a	790	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	791	return( ret );
maclobdell	0:f7c60d3e7b8a	792	}
maclobdell	0:f7c60d3e7b8a	793
maclobdell	0:f7c60d3e7b8a	794	/*
maclobdell	0:f7c60d3e7b8a	795	* subject Name
maclobdell	0:f7c60d3e7b8a	796	*/
maclobdell	0:f7c60d3e7b8a	797	crt->subject_raw.p = p;
maclobdell	0:f7c60d3e7b8a	798
maclobdell	0:f7c60d3e7b8a	799	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
maclobdell	0:f7c60d3e7b8a	800	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	801	{
maclobdell	0:f7c60d3e7b8a	802	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	803	return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
maclobdell	0:f7c60d3e7b8a	804	}
maclobdell	0:f7c60d3e7b8a	805
maclobdell	0:f7c60d3e7b8a	806	if( len && ( ret = mbedtls_x509_get_name( &p, p + len, &crt->subject ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	807	{
maclobdell	0:f7c60d3e7b8a	808	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	809	return( ret );
maclobdell	0:f7c60d3e7b8a	810	}
maclobdell	0:f7c60d3e7b8a	811
maclobdell	0:f7c60d3e7b8a	812	crt->subject_raw.len = p - crt->subject_raw.p;
maclobdell	0:f7c60d3e7b8a	813
maclobdell	0:f7c60d3e7b8a	814	/*
maclobdell	0:f7c60d3e7b8a	815	* SubjectPublicKeyInfo
maclobdell	0:f7c60d3e7b8a	816	*/
maclobdell	0:f7c60d3e7b8a	817	if( ( ret = mbedtls_pk_parse_subpubkey( &p, end, &crt->pk ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	818	{
maclobdell	0:f7c60d3e7b8a	819	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	820	return( ret );
maclobdell	0:f7c60d3e7b8a	821	}
maclobdell	0:f7c60d3e7b8a	822
maclobdell	0:f7c60d3e7b8a	823	/*
maclobdell	0:f7c60d3e7b8a	824	* issuerUniqueID [1] IMPLICIT UniqueIdentifier OPTIONAL,
maclobdell	0:f7c60d3e7b8a	825	* -- If present, version shall be v2 or v3
maclobdell	0:f7c60d3e7b8a	826	* subjectUniqueID [2] IMPLICIT UniqueIdentifier OPTIONAL,
maclobdell	0:f7c60d3e7b8a	827	* -- If present, version shall be v2 or v3
maclobdell	0:f7c60d3e7b8a	828	* extensions [3] EXPLICIT Extensions OPTIONAL
maclobdell	0:f7c60d3e7b8a	829	* -- If present, version shall be v3
maclobdell	0:f7c60d3e7b8a	830	*/
maclobdell	0:f7c60d3e7b8a	831	if( crt->version == 2 \|\| crt->version == 3 )
maclobdell	0:f7c60d3e7b8a	832	{
maclobdell	0:f7c60d3e7b8a	833	ret = x509_get_uid( &p, end, &crt->issuer_id, 1 );
maclobdell	0:f7c60d3e7b8a	834	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	835	{
maclobdell	0:f7c60d3e7b8a	836	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	837	return( ret );
maclobdell	0:f7c60d3e7b8a	838	}
maclobdell	0:f7c60d3e7b8a	839	}
maclobdell	0:f7c60d3e7b8a	840
maclobdell	0:f7c60d3e7b8a	841	if( crt->version == 2 \|\| crt->version == 3 )
maclobdell	0:f7c60d3e7b8a	842	{
maclobdell	0:f7c60d3e7b8a	843	ret = x509_get_uid( &p, end, &crt->subject_id, 2 );
maclobdell	0:f7c60d3e7b8a	844	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	845	{
maclobdell	0:f7c60d3e7b8a	846	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	847	return( ret );
maclobdell	0:f7c60d3e7b8a	848	}
maclobdell	0:f7c60d3e7b8a	849	}
maclobdell	0:f7c60d3e7b8a	850
maclobdell	0:f7c60d3e7b8a	851	#if !defined(MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3)
maclobdell	0:f7c60d3e7b8a	852	if( crt->version == 3 )
maclobdell	0:f7c60d3e7b8a	853	#endif
maclobdell	0:f7c60d3e7b8a	854	{
maclobdell	0:f7c60d3e7b8a	855	ret = x509_get_crt_ext( &p, end, crt );
maclobdell	0:f7c60d3e7b8a	856	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	857	{
maclobdell	0:f7c60d3e7b8a	858	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	859	return( ret );
maclobdell	0:f7c60d3e7b8a	860	}
maclobdell	0:f7c60d3e7b8a	861	}
maclobdell	0:f7c60d3e7b8a	862
maclobdell	0:f7c60d3e7b8a	863	if( p != end )
maclobdell	0:f7c60d3e7b8a	864	{
maclobdell	0:f7c60d3e7b8a	865	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	866	return( MBEDTLS_ERR_X509_INVALID_FORMAT +
maclobdell	0:f7c60d3e7b8a	867	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	868	}
maclobdell	0:f7c60d3e7b8a	869
maclobdell	0:f7c60d3e7b8a	870	end = crt_end;
maclobdell	0:f7c60d3e7b8a	871
maclobdell	0:f7c60d3e7b8a	872	/*
maclobdell	0:f7c60d3e7b8a	873	* }
maclobdell	0:f7c60d3e7b8a	874	* -- end of TBSCertificate
maclobdell	0:f7c60d3e7b8a	875	*
maclobdell	0:f7c60d3e7b8a	876	* signatureAlgorithm AlgorithmIdentifier,
maclobdell	0:f7c60d3e7b8a	877	* signatureValue BIT STRING
maclobdell	0:f7c60d3e7b8a	878	*/
maclobdell	0:f7c60d3e7b8a	879	if( ( ret = mbedtls_x509_get_alg( &p, end, &sig_oid2, &sig_params2 ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	880	{
maclobdell	0:f7c60d3e7b8a	881	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	882	return( ret );
maclobdell	0:f7c60d3e7b8a	883	}
maclobdell	0:f7c60d3e7b8a	884
maclobdell	0:f7c60d3e7b8a	885	if( crt->sig_oid.len != sig_oid2.len \|\|
maclobdell	0:f7c60d3e7b8a	886	memcmp( crt->sig_oid.p, sig_oid2.p, crt->sig_oid.len ) != 0 \|\|
maclobdell	0:f7c60d3e7b8a	887	sig_params1.len != sig_params2.len \|\|
maclobdell	0:f7c60d3e7b8a	888	( sig_params1.len != 0 &&
maclobdell	0:f7c60d3e7b8a	889	memcmp( sig_params1.p, sig_params2.p, sig_params1.len ) != 0 ) )
maclobdell	0:f7c60d3e7b8a	890	{
maclobdell	0:f7c60d3e7b8a	891	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	892	return( MBEDTLS_ERR_X509_SIG_MISMATCH );
maclobdell	0:f7c60d3e7b8a	893	}
maclobdell	0:f7c60d3e7b8a	894
maclobdell	0:f7c60d3e7b8a	895	if( ( ret = mbedtls_x509_get_sig( &p, end, &crt->sig ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	896	{
maclobdell	0:f7c60d3e7b8a	897	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	898	return( ret );
maclobdell	0:f7c60d3e7b8a	899	}
maclobdell	0:f7c60d3e7b8a	900
maclobdell	0:f7c60d3e7b8a	901	if( p != end )
maclobdell	0:f7c60d3e7b8a	902	{
maclobdell	0:f7c60d3e7b8a	903	mbedtls_x509_crt_free( crt );
maclobdell	0:f7c60d3e7b8a	904	return( MBEDTLS_ERR_X509_INVALID_FORMAT +
maclobdell	0:f7c60d3e7b8a	905	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
maclobdell	0:f7c60d3e7b8a	906	}
maclobdell	0:f7c60d3e7b8a	907
maclobdell	0:f7c60d3e7b8a	908	return( 0 );
maclobdell	0:f7c60d3e7b8a	909	}
maclobdell	0:f7c60d3e7b8a	910
maclobdell	0:f7c60d3e7b8a	911	/*
maclobdell	0:f7c60d3e7b8a	912	* Parse one X.509 certificate in DER format from a buffer and add them to a
maclobdell	0:f7c60d3e7b8a	913	* chained list
maclobdell	0:f7c60d3e7b8a	914	*/
maclobdell	0:f7c60d3e7b8a	915	int mbedtls_x509_crt_parse_der( mbedtls_x509_crt chain, const unsigned char buf,
maclobdell	0:f7c60d3e7b8a	916	size_t buflen )
maclobdell	0:f7c60d3e7b8a	917	{
maclobdell	0:f7c60d3e7b8a	918	int ret;
maclobdell	0:f7c60d3e7b8a	919	mbedtls_x509_crt crt = chain, prev = NULL;
maclobdell	0:f7c60d3e7b8a	920
maclobdell	0:f7c60d3e7b8a	921	/*
maclobdell	0:f7c60d3e7b8a	922	* Check for valid input
maclobdell	0:f7c60d3e7b8a	923	*/
maclobdell	0:f7c60d3e7b8a	924	if( crt == NULL \|\| buf == NULL )
maclobdell	0:f7c60d3e7b8a	925	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
maclobdell	0:f7c60d3e7b8a	926
maclobdell	0:f7c60d3e7b8a	927	while( crt->version != 0 && crt->next != NULL )
maclobdell	0:f7c60d3e7b8a	928	{
maclobdell	0:f7c60d3e7b8a	929	prev = crt;
maclobdell	0:f7c60d3e7b8a	930	crt = crt->next;
maclobdell	0:f7c60d3e7b8a	931	}
maclobdell	0:f7c60d3e7b8a	932
maclobdell	0:f7c60d3e7b8a	933	/*
maclobdell	0:f7c60d3e7b8a	934	* Add new certificate on the end of the chain if needed.
maclobdell	0:f7c60d3e7b8a	935	*/
maclobdell	0:f7c60d3e7b8a	936	if( crt->version != 0 && crt->next == NULL )
maclobdell	0:f7c60d3e7b8a	937	{
maclobdell	0:f7c60d3e7b8a	938	crt->next = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );
maclobdell	0:f7c60d3e7b8a	939
maclobdell	0:f7c60d3e7b8a	940	if( crt->next == NULL )
maclobdell	0:f7c60d3e7b8a	941	return( MBEDTLS_ERR_X509_ALLOC_FAILED );
maclobdell	0:f7c60d3e7b8a	942
maclobdell	0:f7c60d3e7b8a	943	prev = crt;
maclobdell	0:f7c60d3e7b8a	944	mbedtls_x509_crt_init( crt->next );
maclobdell	0:f7c60d3e7b8a	945	crt = crt->next;
maclobdell	0:f7c60d3e7b8a	946	}
maclobdell	0:f7c60d3e7b8a	947
maclobdell	0:f7c60d3e7b8a	948	if( ( ret = x509_crt_parse_der_core( crt, buf, buflen ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	949	{
maclobdell	0:f7c60d3e7b8a	950	if( prev )
maclobdell	0:f7c60d3e7b8a	951	prev->next = NULL;
maclobdell	0:f7c60d3e7b8a	952
maclobdell	0:f7c60d3e7b8a	953	if( crt != chain )
maclobdell	0:f7c60d3e7b8a	954	mbedtls_free( crt );
maclobdell	0:f7c60d3e7b8a	955
maclobdell	0:f7c60d3e7b8a	956	return( ret );
maclobdell	0:f7c60d3e7b8a	957	}
maclobdell	0:f7c60d3e7b8a	958
maclobdell	0:f7c60d3e7b8a	959	return( 0 );
maclobdell	0:f7c60d3e7b8a	960	}
maclobdell	0:f7c60d3e7b8a	961
maclobdell	0:f7c60d3e7b8a	962	/*
maclobdell	0:f7c60d3e7b8a	963	* Parse one or more PEM certificates from a buffer and add them to the chained
maclobdell	0:f7c60d3e7b8a	964	* list
maclobdell	0:f7c60d3e7b8a	965	*/
maclobdell	0:f7c60d3e7b8a	966	int mbedtls_x509_crt_parse( mbedtls_x509_crt chain, const unsigned char buf, size_t buflen )
maclobdell	0:f7c60d3e7b8a	967	{
maclobdell	0:f7c60d3e7b8a	968	int success = 0, first_error = 0, total_failed = 0;
maclobdell	0:f7c60d3e7b8a	969	int buf_format = MBEDTLS_X509_FORMAT_DER;
maclobdell	0:f7c60d3e7b8a	970
maclobdell	0:f7c60d3e7b8a	971	/*
maclobdell	0:f7c60d3e7b8a	972	* Check for valid input
maclobdell	0:f7c60d3e7b8a	973	*/
maclobdell	0:f7c60d3e7b8a	974	if( chain == NULL \|\| buf == NULL )
maclobdell	0:f7c60d3e7b8a	975	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
maclobdell	0:f7c60d3e7b8a	976
maclobdell	0:f7c60d3e7b8a	977	/*
maclobdell	0:f7c60d3e7b8a	978	* Determine buffer content. Buffer contains either one DER certificate or
maclobdell	0:f7c60d3e7b8a	979	* one or more PEM certificates.
maclobdell	0:f7c60d3e7b8a	980	*/
maclobdell	0:f7c60d3e7b8a	981	#if defined(MBEDTLS_PEM_PARSE_C)
maclobdell	0:f7c60d3e7b8a	982	if( buflen != 0 && buf[buflen - 1] == '\0' &&
maclobdell	0:f7c60d3e7b8a	983	strstr( (const char *) buf, "-----BEGIN CERTIFICATE-----" ) != NULL )
maclobdell	0:f7c60d3e7b8a	984	{
maclobdell	0:f7c60d3e7b8a	985	buf_format = MBEDTLS_X509_FORMAT_PEM;
maclobdell	0:f7c60d3e7b8a	986	}
maclobdell	0:f7c60d3e7b8a	987	#endif
maclobdell	0:f7c60d3e7b8a	988
maclobdell	0:f7c60d3e7b8a	989	if( buf_format == MBEDTLS_X509_FORMAT_DER )
maclobdell	0:f7c60d3e7b8a	990	return mbedtls_x509_crt_parse_der( chain, buf, buflen );
maclobdell	0:f7c60d3e7b8a	991
maclobdell	0:f7c60d3e7b8a	992	#if defined(MBEDTLS_PEM_PARSE_C)
maclobdell	0:f7c60d3e7b8a	993	if( buf_format == MBEDTLS_X509_FORMAT_PEM )
maclobdell	0:f7c60d3e7b8a	994	{
maclobdell	0:f7c60d3e7b8a	995	int ret;
maclobdell	0:f7c60d3e7b8a	996	mbedtls_pem_context pem;
maclobdell	0:f7c60d3e7b8a	997
maclobdell	0:f7c60d3e7b8a	998	/* 1 rather than 0 since the terminating NULL byte is counted in */
maclobdell	0:f7c60d3e7b8a	999	while( buflen > 1 )
maclobdell	0:f7c60d3e7b8a	1000	{
maclobdell	0:f7c60d3e7b8a	1001	size_t use_len;
maclobdell	0:f7c60d3e7b8a	1002	mbedtls_pem_init( &pem );
maclobdell	0:f7c60d3e7b8a	1003
maclobdell	0:f7c60d3e7b8a	1004	/* If we get there, we know the string is null-terminated */
maclobdell	0:f7c60d3e7b8a	1005	ret = mbedtls_pem_read_buffer( &pem,
maclobdell	0:f7c60d3e7b8a	1006	"-----BEGIN CERTIFICATE-----",
maclobdell	0:f7c60d3e7b8a	1007	"-----END CERTIFICATE-----",
maclobdell	0:f7c60d3e7b8a	1008	buf, NULL, 0, &use_len );
maclobdell	0:f7c60d3e7b8a	1009
maclobdell	0:f7c60d3e7b8a	1010	if( ret == 0 )
maclobdell	0:f7c60d3e7b8a	1011	{
maclobdell	0:f7c60d3e7b8a	1012	/*
maclobdell	0:f7c60d3e7b8a	1013	* Was PEM encoded
maclobdell	0:f7c60d3e7b8a	1014	*/
maclobdell	0:f7c60d3e7b8a	1015	buflen -= use_len;
maclobdell	0:f7c60d3e7b8a	1016	buf += use_len;
maclobdell	0:f7c60d3e7b8a	1017	}
maclobdell	0:f7c60d3e7b8a	1018	else if( ret == MBEDTLS_ERR_PEM_BAD_INPUT_DATA )
maclobdell	0:f7c60d3e7b8a	1019	{
maclobdell	0:f7c60d3e7b8a	1020	return( ret );
maclobdell	0:f7c60d3e7b8a	1021	}
maclobdell	0:f7c60d3e7b8a	1022	else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
maclobdell	0:f7c60d3e7b8a	1023	{
maclobdell	0:f7c60d3e7b8a	1024	mbedtls_pem_free( &pem );
maclobdell	0:f7c60d3e7b8a	1025
maclobdell	0:f7c60d3e7b8a	1026	/*
maclobdell	0:f7c60d3e7b8a	1027	* PEM header and footer were found
maclobdell	0:f7c60d3e7b8a	1028	*/
maclobdell	0:f7c60d3e7b8a	1029	buflen -= use_len;
maclobdell	0:f7c60d3e7b8a	1030	buf += use_len;
maclobdell	0:f7c60d3e7b8a	1031
maclobdell	0:f7c60d3e7b8a	1032	if( first_error == 0 )
maclobdell	0:f7c60d3e7b8a	1033	first_error = ret;
maclobdell	0:f7c60d3e7b8a	1034
maclobdell	0:f7c60d3e7b8a	1035	total_failed++;
maclobdell	0:f7c60d3e7b8a	1036	continue;
maclobdell	0:f7c60d3e7b8a	1037	}
maclobdell	0:f7c60d3e7b8a	1038	else
maclobdell	0:f7c60d3e7b8a	1039	break;
maclobdell	0:f7c60d3e7b8a	1040
maclobdell	0:f7c60d3e7b8a	1041	ret = mbedtls_x509_crt_parse_der( chain, pem.buf, pem.buflen );
maclobdell	0:f7c60d3e7b8a	1042
maclobdell	0:f7c60d3e7b8a	1043	mbedtls_pem_free( &pem );
maclobdell	0:f7c60d3e7b8a	1044
maclobdell	0:f7c60d3e7b8a	1045	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	1046	{
maclobdell	0:f7c60d3e7b8a	1047	/*
maclobdell	0:f7c60d3e7b8a	1048	* Quit parsing on a memory error
maclobdell	0:f7c60d3e7b8a	1049	*/
maclobdell	0:f7c60d3e7b8a	1050	if( ret == MBEDTLS_ERR_X509_ALLOC_FAILED )
maclobdell	0:f7c60d3e7b8a	1051	return( ret );
maclobdell	0:f7c60d3e7b8a	1052
maclobdell	0:f7c60d3e7b8a	1053	if( first_error == 0 )
maclobdell	0:f7c60d3e7b8a	1054	first_error = ret;
maclobdell	0:f7c60d3e7b8a	1055
maclobdell	0:f7c60d3e7b8a	1056	total_failed++;
maclobdell	0:f7c60d3e7b8a	1057	continue;
maclobdell	0:f7c60d3e7b8a	1058	}
maclobdell	0:f7c60d3e7b8a	1059
maclobdell	0:f7c60d3e7b8a	1060	success = 1;
maclobdell	0:f7c60d3e7b8a	1061	}
maclobdell	0:f7c60d3e7b8a	1062	}
maclobdell	0:f7c60d3e7b8a	1063	#endif /* MBEDTLS_PEM_PARSE_C */
maclobdell	0:f7c60d3e7b8a	1064
maclobdell	0:f7c60d3e7b8a	1065	if( success )
maclobdell	0:f7c60d3e7b8a	1066	return( total_failed );
maclobdell	0:f7c60d3e7b8a	1067	else if( first_error )
maclobdell	0:f7c60d3e7b8a	1068	return( first_error );
maclobdell	0:f7c60d3e7b8a	1069	else
maclobdell	0:f7c60d3e7b8a	1070	return( MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT );
maclobdell	0:f7c60d3e7b8a	1071	}
maclobdell	0:f7c60d3e7b8a	1072
maclobdell	0:f7c60d3e7b8a	1073	#if defined(MBEDTLS_FS_IO)
maclobdell	0:f7c60d3e7b8a	1074	/*
maclobdell	0:f7c60d3e7b8a	1075	* Load one or more certificates and add them to the chained list
maclobdell	0:f7c60d3e7b8a	1076	*/
maclobdell	0:f7c60d3e7b8a	1077	int mbedtls_x509_crt_parse_file( mbedtls_x509_crt chain, const char path )
maclobdell	0:f7c60d3e7b8a	1078	{
maclobdell	0:f7c60d3e7b8a	1079	int ret;
maclobdell	0:f7c60d3e7b8a	1080	size_t n;
maclobdell	0:f7c60d3e7b8a	1081	unsigned char *buf;
maclobdell	0:f7c60d3e7b8a	1082
maclobdell	0:f7c60d3e7b8a	1083	if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	1084	return( ret );
maclobdell	0:f7c60d3e7b8a	1085
maclobdell	0:f7c60d3e7b8a	1086	ret = mbedtls_x509_crt_parse( chain, buf, n );
maclobdell	0:f7c60d3e7b8a	1087
maclobdell	0:f7c60d3e7b8a	1088	mbedtls_zeroize( buf, n );
maclobdell	0:f7c60d3e7b8a	1089	mbedtls_free( buf );
maclobdell	0:f7c60d3e7b8a	1090
maclobdell	0:f7c60d3e7b8a	1091	return( ret );
maclobdell	0:f7c60d3e7b8a	1092	}
maclobdell	0:f7c60d3e7b8a	1093
maclobdell	0:f7c60d3e7b8a	1094	int mbedtls_x509_crt_parse_path( mbedtls_x509_crt chain, const char path )
maclobdell	0:f7c60d3e7b8a	1095	{
maclobdell	0:f7c60d3e7b8a	1096	int ret = 0;
maclobdell	0:f7c60d3e7b8a	1097	#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
maclobdell	0:f7c60d3e7b8a	1098	int w_ret;
maclobdell	0:f7c60d3e7b8a	1099	WCHAR szDir[MAX_PATH];
maclobdell	0:f7c60d3e7b8a	1100	char filename[MAX_PATH];
maclobdell	0:f7c60d3e7b8a	1101	char *p;
maclobdell	0:f7c60d3e7b8a	1102	size_t len = strlen( path );
maclobdell	0:f7c60d3e7b8a	1103
maclobdell	0:f7c60d3e7b8a	1104	WIN32_FIND_DATAW file_data;
maclobdell	0:f7c60d3e7b8a	1105	HANDLE hFind;
maclobdell	0:f7c60d3e7b8a	1106
maclobdell	0:f7c60d3e7b8a	1107	if( len > MAX_PATH - 3 )
maclobdell	0:f7c60d3e7b8a	1108	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
maclobdell	0:f7c60d3e7b8a	1109
maclobdell	0:f7c60d3e7b8a	1110	memset( szDir, 0, sizeof(szDir) );
maclobdell	0:f7c60d3e7b8a	1111	memset( filename, 0, MAX_PATH );
maclobdell	0:f7c60d3e7b8a	1112	memcpy( filename, path, len );
maclobdell	0:f7c60d3e7b8a	1113	filename[len++] = '\\';
maclobdell	0:f7c60d3e7b8a	1114	p = filename + len;
maclobdell	0:f7c60d3e7b8a	1115	filename[len++] = '*';
maclobdell	0:f7c60d3e7b8a	1116
maclobdell	0:f7c60d3e7b8a	1117	w_ret = MultiByteToWideChar( CP_ACP, 0, filename, len, szDir,
maclobdell	0:f7c60d3e7b8a	1118	MAX_PATH - 3 );
maclobdell	0:f7c60d3e7b8a	1119	if( w_ret == 0 )
maclobdell	0:f7c60d3e7b8a	1120	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
maclobdell	0:f7c60d3e7b8a	1121
maclobdell	0:f7c60d3e7b8a	1122	hFind = FindFirstFileW( szDir, &file_data );
maclobdell	0:f7c60d3e7b8a	1123	if( hFind == INVALID_HANDLE_VALUE )
maclobdell	0:f7c60d3e7b8a	1124	return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
maclobdell	0:f7c60d3e7b8a	1125
maclobdell	0:f7c60d3e7b8a	1126	len = MAX_PATH - len;
maclobdell	0:f7c60d3e7b8a	1127	do
maclobdell	0:f7c60d3e7b8a	1128	{
maclobdell	0:f7c60d3e7b8a	1129	memset( p, 0, len );
maclobdell	0:f7c60d3e7b8a	1130
maclobdell	0:f7c60d3e7b8a	1131	if( file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
maclobdell	0:f7c60d3e7b8a	1132	continue;
maclobdell	0:f7c60d3e7b8a	1133
maclobdell	0:f7c60d3e7b8a	1134	w_ret = WideCharToMultiByte( CP_ACP, 0, file_data.cFileName,
maclobdell	0:f7c60d3e7b8a	1135	lstrlenW( file_data.cFileName ),
maclobdell	0:f7c60d3e7b8a	1136	p, (int) len - 1,
maclobdell	0:f7c60d3e7b8a	1137	NULL, NULL );
maclobdell	0:f7c60d3e7b8a	1138	if( w_ret == 0 )
maclobdell	0:f7c60d3e7b8a	1139	return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
maclobdell	0:f7c60d3e7b8a	1140
maclobdell	0:f7c60d3e7b8a	1141	w_ret = mbedtls_x509_crt_parse_file( chain, filename );
maclobdell	0:f7c60d3e7b8a	1142	if( w_ret < 0 )
maclobdell	0:f7c60d3e7b8a	1143	ret++;
maclobdell	0:f7c60d3e7b8a	1144	else
maclobdell	0:f7c60d3e7b8a	1145	ret += w_ret;
maclobdell	0:f7c60d3e7b8a	1146	}
maclobdell	0:f7c60d3e7b8a	1147	while( FindNextFileW( hFind, &file_data ) != 0 );
maclobdell	0:f7c60d3e7b8a	1148
maclobdell	0:f7c60d3e7b8a	1149	if( GetLastError() != ERROR_NO_MORE_FILES )
maclobdell	0:f7c60d3e7b8a	1150	ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
maclobdell	0:f7c60d3e7b8a	1151
maclobdell	0:f7c60d3e7b8a	1152	FindClose( hFind );
maclobdell	0:f7c60d3e7b8a	1153	#else /* _WIN32 */
maclobdell	0:f7c60d3e7b8a	1154	int t_ret;
maclobdell	0:f7c60d3e7b8a	1155	struct stat sb;
maclobdell	0:f7c60d3e7b8a	1156	struct dirent *entry;
maclobdell	0:f7c60d3e7b8a	1157	char entry_name[255];
maclobdell	0:f7c60d3e7b8a	1158	DIR *dir = opendir( path );
maclobdell	0:f7c60d3e7b8a	1159
maclobdell	0:f7c60d3e7b8a	1160	if( dir == NULL )
maclobdell	0:f7c60d3e7b8a	1161	return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
maclobdell	0:f7c60d3e7b8a	1162
maclobdell	0:f7c60d3e7b8a	1163	#if defined(MBEDTLS_THREADING_PTHREAD)
maclobdell	0:f7c60d3e7b8a	1164	if( ( ret = mbedtls_mutex_lock( &mbedtls_threading_readdir_mutex ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	1165	{
maclobdell	0:f7c60d3e7b8a	1166	closedir( dir );
maclobdell	0:f7c60d3e7b8a	1167	return( ret );
maclobdell	0:f7c60d3e7b8a	1168	}
maclobdell	0:f7c60d3e7b8a	1169	#endif
maclobdell	0:f7c60d3e7b8a	1170
maclobdell	0:f7c60d3e7b8a	1171	while( ( entry = readdir( dir ) ) != NULL )
maclobdell	0:f7c60d3e7b8a	1172	{
maclobdell	0:f7c60d3e7b8a	1173	mbedtls_snprintf( entry_name, sizeof entry_name, "%s/%s", path, entry->d_name );
maclobdell	0:f7c60d3e7b8a	1174
maclobdell	0:f7c60d3e7b8a	1175	if( stat( entry_name, &sb ) == -1 )
maclobdell	0:f7c60d3e7b8a	1176	{
maclobdell	0:f7c60d3e7b8a	1177	closedir( dir );
maclobdell	0:f7c60d3e7b8a	1178	ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
maclobdell	0:f7c60d3e7b8a	1179	goto cleanup;
maclobdell	0:f7c60d3e7b8a	1180	}
maclobdell	0:f7c60d3e7b8a	1181
maclobdell	0:f7c60d3e7b8a	1182	if( !S_ISREG( sb.st_mode ) )
maclobdell	0:f7c60d3e7b8a	1183	continue;
maclobdell	0:f7c60d3e7b8a	1184
maclobdell	0:f7c60d3e7b8a	1185	// Ignore parse errors
maclobdell	0:f7c60d3e7b8a	1186	//
maclobdell	0:f7c60d3e7b8a	1187	t_ret = mbedtls_x509_crt_parse_file( chain, entry_name );
maclobdell	0:f7c60d3e7b8a	1188	if( t_ret < 0 )
maclobdell	0:f7c60d3e7b8a	1189	ret++;
maclobdell	0:f7c60d3e7b8a	1190	else
maclobdell	0:f7c60d3e7b8a	1191	ret += t_ret;
maclobdell	0:f7c60d3e7b8a	1192	}
maclobdell	0:f7c60d3e7b8a	1193	closedir( dir );
maclobdell	0:f7c60d3e7b8a	1194
maclobdell	0:f7c60d3e7b8a	1195	cleanup:
maclobdell	0:f7c60d3e7b8a	1196	#if defined(MBEDTLS_THREADING_PTHREAD)
maclobdell	0:f7c60d3e7b8a	1197	if( mbedtls_mutex_unlock( &mbedtls_threading_readdir_mutex ) != 0 )
maclobdell	0:f7c60d3e7b8a	1198	ret = MBEDTLS_ERR_THREADING_MUTEX_ERROR;
maclobdell	0:f7c60d3e7b8a	1199	#endif
maclobdell	0:f7c60d3e7b8a	1200
maclobdell	0:f7c60d3e7b8a	1201	#endif /* _WIN32 */
maclobdell	0:f7c60d3e7b8a	1202
maclobdell	0:f7c60d3e7b8a	1203	return( ret );
maclobdell	0:f7c60d3e7b8a	1204	}
maclobdell	0:f7c60d3e7b8a	1205	#endif /* MBEDTLS_FS_IO */
maclobdell	0:f7c60d3e7b8a	1206
maclobdell	0:f7c60d3e7b8a	1207	static int x509_info_subject_alt_name( char *buf, size_t size,
maclobdell	0:f7c60d3e7b8a	1208	const mbedtls_x509_sequence *subject_alt_name )
maclobdell	0:f7c60d3e7b8a	1209	{
maclobdell	0:f7c60d3e7b8a	1210	size_t i;
maclobdell	0:f7c60d3e7b8a	1211	size_t n = *size;
maclobdell	0:f7c60d3e7b8a	1212	char p = buf;
maclobdell	0:f7c60d3e7b8a	1213	const mbedtls_x509_sequence *cur = subject_alt_name;
maclobdell	0:f7c60d3e7b8a	1214	const char *sep = "";
maclobdell	0:f7c60d3e7b8a	1215	size_t sep_len = 0;
maclobdell	0:f7c60d3e7b8a	1216
maclobdell	0:f7c60d3e7b8a	1217	while( cur != NULL )
maclobdell	0:f7c60d3e7b8a	1218	{
maclobdell	0:f7c60d3e7b8a	1219	if( cur->buf.len + sep_len >= n )
maclobdell	0:f7c60d3e7b8a	1220	{
maclobdell	0:f7c60d3e7b8a	1221	*p = '\0';
maclobdell	0:f7c60d3e7b8a	1222	return( MBEDTLS_ERR_X509_BUFFER_TOO_SMALL );
maclobdell	0:f7c60d3e7b8a	1223	}
maclobdell	0:f7c60d3e7b8a	1224
maclobdell	0:f7c60d3e7b8a	1225	n -= cur->buf.len + sep_len;
maclobdell	0:f7c60d3e7b8a	1226	for( i = 0; i < sep_len; i++ )
maclobdell	0:f7c60d3e7b8a	1227	*p++ = sep[i];
maclobdell	0:f7c60d3e7b8a	1228	for( i = 0; i < cur->buf.len; i++ )
maclobdell	0:f7c60d3e7b8a	1229	*p++ = cur->buf.p[i];
maclobdell	0:f7c60d3e7b8a	1230
maclobdell	0:f7c60d3e7b8a	1231	sep = ", ";
maclobdell	0:f7c60d3e7b8a	1232	sep_len = 2;
maclobdell	0:f7c60d3e7b8a	1233
maclobdell	0:f7c60d3e7b8a	1234	cur = cur->next;
maclobdell	0:f7c60d3e7b8a	1235	}
maclobdell	0:f7c60d3e7b8a	1236
maclobdell	0:f7c60d3e7b8a	1237	*p = '\0';
maclobdell	0:f7c60d3e7b8a	1238
maclobdell	0:f7c60d3e7b8a	1239	*size = n;
maclobdell	0:f7c60d3e7b8a	1240	*buf = p;
maclobdell	0:f7c60d3e7b8a	1241
maclobdell	0:f7c60d3e7b8a	1242	return( 0 );
maclobdell	0:f7c60d3e7b8a	1243	}
maclobdell	0:f7c60d3e7b8a	1244
maclobdell	0:f7c60d3e7b8a	1245	#define PRINT_ITEM(i) \
maclobdell	0:f7c60d3e7b8a	1246	{ \
maclobdell	0:f7c60d3e7b8a	1247	ret = mbedtls_snprintf( p, n, "%s" i, sep ); \
maclobdell	0:f7c60d3e7b8a	1248	MBEDTLS_X509_SAFE_SNPRINTF; \
maclobdell	0:f7c60d3e7b8a	1249	sep = ", "; \
maclobdell	0:f7c60d3e7b8a	1250	}
maclobdell	0:f7c60d3e7b8a	1251
maclobdell	0:f7c60d3e7b8a	1252	#define CERT_TYPE(type,name) \
maclobdell	0:f7c60d3e7b8a	1253	if( ns_cert_type & type ) \
maclobdell	0:f7c60d3e7b8a	1254	PRINT_ITEM( name );
maclobdell	0:f7c60d3e7b8a	1255
maclobdell	0:f7c60d3e7b8a	1256	static int x509_info_cert_type( char *buf, size_t size,
maclobdell	0:f7c60d3e7b8a	1257	unsigned char ns_cert_type )
maclobdell	0:f7c60d3e7b8a	1258	{
maclobdell	0:f7c60d3e7b8a	1259	int ret;
maclobdell	0:f7c60d3e7b8a	1260	size_t n = *size;
maclobdell	0:f7c60d3e7b8a	1261	char p = buf;
maclobdell	0:f7c60d3e7b8a	1262	const char *sep = "";
maclobdell	0:f7c60d3e7b8a	1263
maclobdell	0:f7c60d3e7b8a	1264	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT, "SSL Client" );
maclobdell	0:f7c60d3e7b8a	1265	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER, "SSL Server" );
maclobdell	0:f7c60d3e7b8a	1266	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL, "Email" );
maclobdell	0:f7c60d3e7b8a	1267	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING, "Object Signing" );
maclobdell	0:f7c60d3e7b8a	1268	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_RESERVED, "Reserved" );
maclobdell	0:f7c60d3e7b8a	1269	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CA, "SSL CA" );
maclobdell	0:f7c60d3e7b8a	1270	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA, "Email CA" );
maclobdell	0:f7c60d3e7b8a	1271	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA, "Object Signing CA" );
maclobdell	0:f7c60d3e7b8a	1272
maclobdell	0:f7c60d3e7b8a	1273	*size = n;
maclobdell	0:f7c60d3e7b8a	1274	*buf = p;
maclobdell	0:f7c60d3e7b8a	1275
maclobdell	0:f7c60d3e7b8a	1276	return( 0 );
maclobdell	0:f7c60d3e7b8a	1277	}
maclobdell	0:f7c60d3e7b8a	1278
maclobdell	0:f7c60d3e7b8a	1279	#define KEY_USAGE(code,name) \
maclobdell	0:f7c60d3e7b8a	1280	if( key_usage & code ) \
maclobdell	0:f7c60d3e7b8a	1281	PRINT_ITEM( name );
maclobdell	0:f7c60d3e7b8a	1282
maclobdell	0:f7c60d3e7b8a	1283	static int x509_info_key_usage( char *buf, size_t size,
maclobdell	0:f7c60d3e7b8a	1284	unsigned int key_usage )
maclobdell	0:f7c60d3e7b8a	1285	{
maclobdell	0:f7c60d3e7b8a	1286	int ret;
maclobdell	0:f7c60d3e7b8a	1287	size_t n = *size;
maclobdell	0:f7c60d3e7b8a	1288	char p = buf;
maclobdell	0:f7c60d3e7b8a	1289	const char *sep = "";
maclobdell	0:f7c60d3e7b8a	1290
maclobdell	0:f7c60d3e7b8a	1291	KEY_USAGE( MBEDTLS_X509_KU_DIGITAL_SIGNATURE, "Digital Signature" );
maclobdell	0:f7c60d3e7b8a	1292	KEY_USAGE( MBEDTLS_X509_KU_NON_REPUDIATION, "Non Repudiation" );
maclobdell	0:f7c60d3e7b8a	1293	KEY_USAGE( MBEDTLS_X509_KU_KEY_ENCIPHERMENT, "Key Encipherment" );
maclobdell	0:f7c60d3e7b8a	1294	KEY_USAGE( MBEDTLS_X509_KU_DATA_ENCIPHERMENT, "Data Encipherment" );
maclobdell	0:f7c60d3e7b8a	1295	KEY_USAGE( MBEDTLS_X509_KU_KEY_AGREEMENT, "Key Agreement" );
maclobdell	0:f7c60d3e7b8a	1296	KEY_USAGE( MBEDTLS_X509_KU_KEY_CERT_SIGN, "Key Cert Sign" );
maclobdell	0:f7c60d3e7b8a	1297	KEY_USAGE( MBEDTLS_X509_KU_CRL_SIGN, "CRL Sign" );
maclobdell	0:f7c60d3e7b8a	1298	KEY_USAGE( MBEDTLS_X509_KU_ENCIPHER_ONLY, "Encipher Only" );
maclobdell	0:f7c60d3e7b8a	1299	KEY_USAGE( MBEDTLS_X509_KU_DECIPHER_ONLY, "Decipher Only" );
maclobdell	0:f7c60d3e7b8a	1300
maclobdell	0:f7c60d3e7b8a	1301	*size = n;
maclobdell	0:f7c60d3e7b8a	1302	*buf = p;
maclobdell	0:f7c60d3e7b8a	1303
maclobdell	0:f7c60d3e7b8a	1304	return( 0 );
maclobdell	0:f7c60d3e7b8a	1305	}
maclobdell	0:f7c60d3e7b8a	1306
maclobdell	0:f7c60d3e7b8a	1307	static int x509_info_ext_key_usage( char *buf, size_t size,
maclobdell	0:f7c60d3e7b8a	1308	const mbedtls_x509_sequence *extended_key_usage )
maclobdell	0:f7c60d3e7b8a	1309	{
maclobdell	0:f7c60d3e7b8a	1310	int ret;
maclobdell	0:f7c60d3e7b8a	1311	const char *desc;
maclobdell	0:f7c60d3e7b8a	1312	size_t n = *size;
maclobdell	0:f7c60d3e7b8a	1313	char p = buf;
maclobdell	0:f7c60d3e7b8a	1314	const mbedtls_x509_sequence *cur = extended_key_usage;
maclobdell	0:f7c60d3e7b8a	1315	const char *sep = "";
maclobdell	0:f7c60d3e7b8a	1316
maclobdell	0:f7c60d3e7b8a	1317	while( cur != NULL )
maclobdell	0:f7c60d3e7b8a	1318	{
maclobdell	0:f7c60d3e7b8a	1319	if( mbedtls_oid_get_extended_key_usage( &cur->buf, &desc ) != 0 )
maclobdell	0:f7c60d3e7b8a	1320	desc = "???";
maclobdell	0:f7c60d3e7b8a	1321
maclobdell	0:f7c60d3e7b8a	1322	ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
maclobdell	0:f7c60d3e7b8a	1323	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1324
maclobdell	0:f7c60d3e7b8a	1325	sep = ", ";
maclobdell	0:f7c60d3e7b8a	1326
maclobdell	0:f7c60d3e7b8a	1327	cur = cur->next;
maclobdell	0:f7c60d3e7b8a	1328	}
maclobdell	0:f7c60d3e7b8a	1329
maclobdell	0:f7c60d3e7b8a	1330	*size = n;
maclobdell	0:f7c60d3e7b8a	1331	*buf = p;
maclobdell	0:f7c60d3e7b8a	1332
maclobdell	0:f7c60d3e7b8a	1333	return( 0 );
maclobdell	0:f7c60d3e7b8a	1334	}
maclobdell	0:f7c60d3e7b8a	1335
maclobdell	0:f7c60d3e7b8a	1336	/*
maclobdell	0:f7c60d3e7b8a	1337	* Return an informational string about the certificate.
maclobdell	0:f7c60d3e7b8a	1338	*/
maclobdell	0:f7c60d3e7b8a	1339	#define BEFORE_COLON 18
maclobdell	0:f7c60d3e7b8a	1340	#define BC "18"
maclobdell	0:f7c60d3e7b8a	1341	int mbedtls_x509_crt_info( char buf, size_t size, const char prefix,
maclobdell	0:f7c60d3e7b8a	1342	const mbedtls_x509_crt *crt )
maclobdell	0:f7c60d3e7b8a	1343	{
maclobdell	0:f7c60d3e7b8a	1344	int ret;
maclobdell	0:f7c60d3e7b8a	1345	size_t n;
maclobdell	0:f7c60d3e7b8a	1346	char *p;
maclobdell	0:f7c60d3e7b8a	1347	char key_size_str[BEFORE_COLON];
maclobdell	0:f7c60d3e7b8a	1348
maclobdell	0:f7c60d3e7b8a	1349	p = buf;
maclobdell	0:f7c60d3e7b8a	1350	n = size;
maclobdell	0:f7c60d3e7b8a	1351
maclobdell	0:f7c60d3e7b8a	1352	ret = mbedtls_snprintf( p, n, "%scert. version : %d\n",
maclobdell	0:f7c60d3e7b8a	1353	prefix, crt->version );
maclobdell	0:f7c60d3e7b8a	1354	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1355	ret = mbedtls_snprintf( p, n, "%sserial number : ",
maclobdell	0:f7c60d3e7b8a	1356	prefix );
maclobdell	0:f7c60d3e7b8a	1357	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1358
maclobdell	0:f7c60d3e7b8a	1359	ret = mbedtls_x509_serial_gets( p, n, &crt->serial );
maclobdell	0:f7c60d3e7b8a	1360	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1361
maclobdell	0:f7c60d3e7b8a	1362	ret = mbedtls_snprintf( p, n, "\n%sissuer name : ", prefix );
maclobdell	0:f7c60d3e7b8a	1363	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1364	ret = mbedtls_x509_dn_gets( p, n, &crt->issuer );
maclobdell	0:f7c60d3e7b8a	1365	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1366
maclobdell	0:f7c60d3e7b8a	1367	ret = mbedtls_snprintf( p, n, "\n%ssubject name : ", prefix );
maclobdell	0:f7c60d3e7b8a	1368	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1369	ret = mbedtls_x509_dn_gets( p, n, &crt->subject );
maclobdell	0:f7c60d3e7b8a	1370	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1371
maclobdell	0:f7c60d3e7b8a	1372	ret = mbedtls_snprintf( p, n, "\n%sissued on : " \
maclobdell	0:f7c60d3e7b8a	1373	"%04d-%02d-%02d %02d:%02d:%02d", prefix,
maclobdell	0:f7c60d3e7b8a	1374	crt->valid_from.year, crt->valid_from.mon,
maclobdell	0:f7c60d3e7b8a	1375	crt->valid_from.day, crt->valid_from.hour,
maclobdell	0:f7c60d3e7b8a	1376	crt->valid_from.min, crt->valid_from.sec );
maclobdell	0:f7c60d3e7b8a	1377	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1378
maclobdell	0:f7c60d3e7b8a	1379	ret = mbedtls_snprintf( p, n, "\n%sexpires on : " \
maclobdell	0:f7c60d3e7b8a	1380	"%04d-%02d-%02d %02d:%02d:%02d", prefix,
maclobdell	0:f7c60d3e7b8a	1381	crt->valid_to.year, crt->valid_to.mon,
maclobdell	0:f7c60d3e7b8a	1382	crt->valid_to.day, crt->valid_to.hour,
maclobdell	0:f7c60d3e7b8a	1383	crt->valid_to.min, crt->valid_to.sec );
maclobdell	0:f7c60d3e7b8a	1384	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1385
maclobdell	0:f7c60d3e7b8a	1386	ret = mbedtls_snprintf( p, n, "\n%ssigned using : ", prefix );
maclobdell	0:f7c60d3e7b8a	1387	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1388
maclobdell	0:f7c60d3e7b8a	1389	ret = mbedtls_x509_sig_alg_gets( p, n, &crt->sig_oid, crt->sig_pk,
maclobdell	0:f7c60d3e7b8a	1390	crt->sig_md, crt->sig_opts );
maclobdell	0:f7c60d3e7b8a	1391	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1392
maclobdell	0:f7c60d3e7b8a	1393	/* Key size */
maclobdell	0:f7c60d3e7b8a	1394	if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
maclobdell	0:f7c60d3e7b8a	1395	mbedtls_pk_get_name( &crt->pk ) ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	1396	{
maclobdell	0:f7c60d3e7b8a	1397	return( ret );
maclobdell	0:f7c60d3e7b8a	1398	}
maclobdell	0:f7c60d3e7b8a	1399
maclobdell	0:f7c60d3e7b8a	1400	ret = mbedtls_snprintf( p, n, "\n%s%-" BC "s: %d bits", prefix, key_size_str,
maclobdell	0:f7c60d3e7b8a	1401	(int) mbedtls_pk_get_bitlen( &crt->pk ) );
maclobdell	0:f7c60d3e7b8a	1402	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1403
maclobdell	0:f7c60d3e7b8a	1404	/*
maclobdell	0:f7c60d3e7b8a	1405	* Optional extensions
maclobdell	0:f7c60d3e7b8a	1406	*/
maclobdell	0:f7c60d3e7b8a	1407
maclobdell	0:f7c60d3e7b8a	1408	if( crt->ext_types & MBEDTLS_X509_EXT_BASIC_CONSTRAINTS )
maclobdell	0:f7c60d3e7b8a	1409	{
maclobdell	0:f7c60d3e7b8a	1410	ret = mbedtls_snprintf( p, n, "\n%sbasic constraints : CA=%s", prefix,
maclobdell	0:f7c60d3e7b8a	1411	crt->ca_istrue ? "true" : "false" );
maclobdell	0:f7c60d3e7b8a	1412	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1413
maclobdell	0:f7c60d3e7b8a	1414	if( crt->max_pathlen > 0 )
maclobdell	0:f7c60d3e7b8a	1415	{
maclobdell	0:f7c60d3e7b8a	1416	ret = mbedtls_snprintf( p, n, ", max_pathlen=%d", crt->max_pathlen - 1 );
maclobdell	0:f7c60d3e7b8a	1417	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1418	}
maclobdell	0:f7c60d3e7b8a	1419	}
maclobdell	0:f7c60d3e7b8a	1420
maclobdell	0:f7c60d3e7b8a	1421	if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
maclobdell	0:f7c60d3e7b8a	1422	{
maclobdell	0:f7c60d3e7b8a	1423	ret = mbedtls_snprintf( p, n, "\n%ssubject alt name : ", prefix );
maclobdell	0:f7c60d3e7b8a	1424	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1425
maclobdell	0:f7c60d3e7b8a	1426	if( ( ret = x509_info_subject_alt_name( &p, &n,
maclobdell	0:f7c60d3e7b8a	1427	&crt->subject_alt_names ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	1428	return( ret );
maclobdell	0:f7c60d3e7b8a	1429	}
maclobdell	0:f7c60d3e7b8a	1430
maclobdell	0:f7c60d3e7b8a	1431	if( crt->ext_types & MBEDTLS_X509_EXT_NS_CERT_TYPE )
maclobdell	0:f7c60d3e7b8a	1432	{
maclobdell	0:f7c60d3e7b8a	1433	ret = mbedtls_snprintf( p, n, "\n%scert. type : ", prefix );
maclobdell	0:f7c60d3e7b8a	1434	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1435
maclobdell	0:f7c60d3e7b8a	1436	if( ( ret = x509_info_cert_type( &p, &n, crt->ns_cert_type ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	1437	return( ret );
maclobdell	0:f7c60d3e7b8a	1438	}
maclobdell	0:f7c60d3e7b8a	1439
maclobdell	0:f7c60d3e7b8a	1440	if( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE )
maclobdell	0:f7c60d3e7b8a	1441	{
maclobdell	0:f7c60d3e7b8a	1442	ret = mbedtls_snprintf( p, n, "\n%skey usage : ", prefix );
maclobdell	0:f7c60d3e7b8a	1443	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1444
maclobdell	0:f7c60d3e7b8a	1445	if( ( ret = x509_info_key_usage( &p, &n, crt->key_usage ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	1446	return( ret );
maclobdell	0:f7c60d3e7b8a	1447	}
maclobdell	0:f7c60d3e7b8a	1448
maclobdell	0:f7c60d3e7b8a	1449	if( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE )
maclobdell	0:f7c60d3e7b8a	1450	{
maclobdell	0:f7c60d3e7b8a	1451	ret = mbedtls_snprintf( p, n, "\n%sext key usage : ", prefix );
maclobdell	0:f7c60d3e7b8a	1452	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1453
maclobdell	0:f7c60d3e7b8a	1454	if( ( ret = x509_info_ext_key_usage( &p, &n,
maclobdell	0:f7c60d3e7b8a	1455	&crt->ext_key_usage ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	1456	return( ret );
maclobdell	0:f7c60d3e7b8a	1457	}
maclobdell	0:f7c60d3e7b8a	1458
maclobdell	0:f7c60d3e7b8a	1459	ret = mbedtls_snprintf( p, n, "\n" );
maclobdell	0:f7c60d3e7b8a	1460	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1461
maclobdell	0:f7c60d3e7b8a	1462	return( (int) ( size - n ) );
maclobdell	0:f7c60d3e7b8a	1463	}
maclobdell	0:f7c60d3e7b8a	1464
maclobdell	0:f7c60d3e7b8a	1465	struct x509_crt_verify_string {
maclobdell	0:f7c60d3e7b8a	1466	int code;
maclobdell	0:f7c60d3e7b8a	1467	const char *string;
maclobdell	0:f7c60d3e7b8a	1468	};
maclobdell	0:f7c60d3e7b8a	1469
maclobdell	0:f7c60d3e7b8a	1470	static const struct x509_crt_verify_string x509_crt_verify_strings[] = {
maclobdell	0:f7c60d3e7b8a	1471	{ MBEDTLS_X509_BADCERT_EXPIRED, "The certificate validity has expired" },
maclobdell	0:f7c60d3e7b8a	1472	{ MBEDTLS_X509_BADCERT_REVOKED, "The certificate has been revoked (is on a CRL)" },
maclobdell	0:f7c60d3e7b8a	1473	{ MBEDTLS_X509_BADCERT_CN_MISMATCH, "The certificate Common Name (CN) does not match with the expected CN" },
maclobdell	0:f7c60d3e7b8a	1474	{ MBEDTLS_X509_BADCERT_NOT_TRUSTED, "The certificate is not correctly signed by the trusted CA" },
maclobdell	0:f7c60d3e7b8a	1475	{ MBEDTLS_X509_BADCRL_NOT_TRUSTED, "The CRL is not correctly signed by the trusted CA" },
maclobdell	0:f7c60d3e7b8a	1476	{ MBEDTLS_X509_BADCRL_EXPIRED, "The CRL is expired" },
maclobdell	0:f7c60d3e7b8a	1477	{ MBEDTLS_X509_BADCERT_MISSING, "Certificate was missing" },
maclobdell	0:f7c60d3e7b8a	1478	{ MBEDTLS_X509_BADCERT_SKIP_VERIFY, "Certificate verification was skipped" },
maclobdell	0:f7c60d3e7b8a	1479	{ MBEDTLS_X509_BADCERT_OTHER, "Other reason (can be used by verify callback)" },
maclobdell	0:f7c60d3e7b8a	1480	{ MBEDTLS_X509_BADCERT_FUTURE, "The certificate validity starts in the future" },
maclobdell	0:f7c60d3e7b8a	1481	{ MBEDTLS_X509_BADCRL_FUTURE, "The CRL is from the future" },
maclobdell	0:f7c60d3e7b8a	1482	{ MBEDTLS_X509_BADCERT_KEY_USAGE, "Usage does not match the keyUsage extension" },
maclobdell	0:f7c60d3e7b8a	1483	{ MBEDTLS_X509_BADCERT_EXT_KEY_USAGE, "Usage does not match the extendedKeyUsage extension" },
maclobdell	0:f7c60d3e7b8a	1484	{ MBEDTLS_X509_BADCERT_NS_CERT_TYPE, "Usage does not match the nsCertType extension" },
maclobdell	0:f7c60d3e7b8a	1485	{ MBEDTLS_X509_BADCERT_BAD_MD, "The certificate is signed with an unacceptable hash." },
maclobdell	0:f7c60d3e7b8a	1486	{ MBEDTLS_X509_BADCERT_BAD_PK, "The certificate is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
maclobdell	0:f7c60d3e7b8a	1487	{ MBEDTLS_X509_BADCERT_BAD_KEY, "The certificate is signed with an unacceptable key (eg bad curve, RSA too short)." },
maclobdell	0:f7c60d3e7b8a	1488	{ MBEDTLS_X509_BADCRL_BAD_MD, "The CRL is signed with an unacceptable hash." },
maclobdell	0:f7c60d3e7b8a	1489	{ MBEDTLS_X509_BADCRL_BAD_PK, "The CRL is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
maclobdell	0:f7c60d3e7b8a	1490	{ MBEDTLS_X509_BADCRL_BAD_KEY, "The CRL is signed with an unacceptable key (eg bad curve, RSA too short)." },
maclobdell	0:f7c60d3e7b8a	1491	{ 0, NULL }
maclobdell	0:f7c60d3e7b8a	1492	};
maclobdell	0:f7c60d3e7b8a	1493
maclobdell	0:f7c60d3e7b8a	1494	int mbedtls_x509_crt_verify_info( char buf, size_t size, const char prefix,
maclobdell	0:f7c60d3e7b8a	1495	uint32_t flags )
maclobdell	0:f7c60d3e7b8a	1496	{
maclobdell	0:f7c60d3e7b8a	1497	int ret;
maclobdell	0:f7c60d3e7b8a	1498	const struct x509_crt_verify_string *cur;
maclobdell	0:f7c60d3e7b8a	1499	char *p = buf;
maclobdell	0:f7c60d3e7b8a	1500	size_t n = size;
maclobdell	0:f7c60d3e7b8a	1501
maclobdell	0:f7c60d3e7b8a	1502	for( cur = x509_crt_verify_strings; cur->string != NULL ; cur++ )
maclobdell	0:f7c60d3e7b8a	1503	{
maclobdell	0:f7c60d3e7b8a	1504	if( ( flags & cur->code ) == 0 )
maclobdell	0:f7c60d3e7b8a	1505	continue;
maclobdell	0:f7c60d3e7b8a	1506
maclobdell	0:f7c60d3e7b8a	1507	ret = mbedtls_snprintf( p, n, "%s%s\n", prefix, cur->string );
maclobdell	0:f7c60d3e7b8a	1508	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1509	flags ^= cur->code;
maclobdell	0:f7c60d3e7b8a	1510	}
maclobdell	0:f7c60d3e7b8a	1511
maclobdell	0:f7c60d3e7b8a	1512	if( flags != 0 )
maclobdell	0:f7c60d3e7b8a	1513	{
maclobdell	0:f7c60d3e7b8a	1514	ret = mbedtls_snprintf( p, n, "%sUnknown reason "
maclobdell	0:f7c60d3e7b8a	1515	"(this should not happen)\n", prefix );
maclobdell	0:f7c60d3e7b8a	1516	MBEDTLS_X509_SAFE_SNPRINTF;
maclobdell	0:f7c60d3e7b8a	1517	}
maclobdell	0:f7c60d3e7b8a	1518
maclobdell	0:f7c60d3e7b8a	1519	return( (int) ( size - n ) );
maclobdell	0:f7c60d3e7b8a	1520	}
maclobdell	0:f7c60d3e7b8a	1521
maclobdell	0:f7c60d3e7b8a	1522	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
maclobdell	0:f7c60d3e7b8a	1523	int mbedtls_x509_crt_check_key_usage( const mbedtls_x509_crt *crt,
maclobdell	0:f7c60d3e7b8a	1524	unsigned int usage )
maclobdell	0:f7c60d3e7b8a	1525	{
maclobdell	0:f7c60d3e7b8a	1526	unsigned int usage_must, usage_may;
maclobdell	0:f7c60d3e7b8a	1527	unsigned int may_mask = MBEDTLS_X509_KU_ENCIPHER_ONLY
maclobdell	0:f7c60d3e7b8a	1528	\| MBEDTLS_X509_KU_DECIPHER_ONLY;
maclobdell	0:f7c60d3e7b8a	1529
maclobdell	0:f7c60d3e7b8a	1530	if( ( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE ) == 0 )
maclobdell	0:f7c60d3e7b8a	1531	return( 0 );
maclobdell	0:f7c60d3e7b8a	1532
maclobdell	0:f7c60d3e7b8a	1533	usage_must = usage & ~may_mask;
maclobdell	0:f7c60d3e7b8a	1534
maclobdell	0:f7c60d3e7b8a	1535	if( ( ( crt->key_usage & ~may_mask ) & usage_must ) != usage_must )
maclobdell	0:f7c60d3e7b8a	1536	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
maclobdell	0:f7c60d3e7b8a	1537
maclobdell	0:f7c60d3e7b8a	1538	usage_may = usage & may_mask;
maclobdell	0:f7c60d3e7b8a	1539
maclobdell	0:f7c60d3e7b8a	1540	if( ( ( crt->key_usage & may_mask ) \| usage_may ) != usage_may )
maclobdell	0:f7c60d3e7b8a	1541	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
maclobdell	0:f7c60d3e7b8a	1542
maclobdell	0:f7c60d3e7b8a	1543	return( 0 );
maclobdell	0:f7c60d3e7b8a	1544	}
maclobdell	0:f7c60d3e7b8a	1545	#endif
maclobdell	0:f7c60d3e7b8a	1546
maclobdell	0:f7c60d3e7b8a	1547	#if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
maclobdell	0:f7c60d3e7b8a	1548	int mbedtls_x509_crt_check_extended_key_usage( const mbedtls_x509_crt *crt,
maclobdell	0:f7c60d3e7b8a	1549	const char *usage_oid,
maclobdell	0:f7c60d3e7b8a	1550	size_t usage_len )
maclobdell	0:f7c60d3e7b8a	1551	{
maclobdell	0:f7c60d3e7b8a	1552	const mbedtls_x509_sequence *cur;
maclobdell	0:f7c60d3e7b8a	1553
maclobdell	0:f7c60d3e7b8a	1554	/* Extension is not mandatory, absent means no restriction */
maclobdell	0:f7c60d3e7b8a	1555	if( ( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE ) == 0 )
maclobdell	0:f7c60d3e7b8a	1556	return( 0 );
maclobdell	0:f7c60d3e7b8a	1557
maclobdell	0:f7c60d3e7b8a	1558	/*
maclobdell	0:f7c60d3e7b8a	1559	* Look for the requested usage (or wildcard ANY) in our list
maclobdell	0:f7c60d3e7b8a	1560	*/
maclobdell	0:f7c60d3e7b8a	1561	for( cur = &crt->ext_key_usage; cur != NULL; cur = cur->next )
maclobdell	0:f7c60d3e7b8a	1562	{
maclobdell	0:f7c60d3e7b8a	1563	const mbedtls_x509_buf *cur_oid = &cur->buf;
maclobdell	0:f7c60d3e7b8a	1564
maclobdell	0:f7c60d3e7b8a	1565	if( cur_oid->len == usage_len &&
maclobdell	0:f7c60d3e7b8a	1566	memcmp( cur_oid->p, usage_oid, usage_len ) == 0 )
maclobdell	0:f7c60d3e7b8a	1567	{
maclobdell	0:f7c60d3e7b8a	1568	return( 0 );
maclobdell	0:f7c60d3e7b8a	1569	}
maclobdell	0:f7c60d3e7b8a	1570
maclobdell	0:f7c60d3e7b8a	1571	if( MBEDTLS_OID_CMP( MBEDTLS_OID_ANY_EXTENDED_KEY_USAGE, cur_oid ) == 0 )
maclobdell	0:f7c60d3e7b8a	1572	return( 0 );
maclobdell	0:f7c60d3e7b8a	1573	}
maclobdell	0:f7c60d3e7b8a	1574
maclobdell	0:f7c60d3e7b8a	1575	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
maclobdell	0:f7c60d3e7b8a	1576	}
maclobdell	0:f7c60d3e7b8a	1577	#endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
maclobdell	0:f7c60d3e7b8a	1578
maclobdell	0:f7c60d3e7b8a	1579	#if defined(MBEDTLS_X509_CRL_PARSE_C)
maclobdell	0:f7c60d3e7b8a	1580	/*
maclobdell	0:f7c60d3e7b8a	1581	* Return 1 if the certificate is revoked, or 0 otherwise.
maclobdell	0:f7c60d3e7b8a	1582	*/
maclobdell	0:f7c60d3e7b8a	1583	int mbedtls_x509_crt_is_revoked( const mbedtls_x509_crt crt, const mbedtls_x509_crl crl )
maclobdell	0:f7c60d3e7b8a	1584	{
maclobdell	0:f7c60d3e7b8a	1585	const mbedtls_x509_crl_entry *cur = &crl->entry;
maclobdell	0:f7c60d3e7b8a	1586
maclobdell	0:f7c60d3e7b8a	1587	while( cur != NULL && cur->serial.len != 0 )
maclobdell	0:f7c60d3e7b8a	1588	{
maclobdell	0:f7c60d3e7b8a	1589	if( crt->serial.len == cur->serial.len &&
maclobdell	0:f7c60d3e7b8a	1590	memcmp( crt->serial.p, cur->serial.p, crt->serial.len ) == 0 )
maclobdell	0:f7c60d3e7b8a	1591	{
maclobdell	0:f7c60d3e7b8a	1592	if( mbedtls_x509_time_is_past( &cur->revocation_date ) )
maclobdell	0:f7c60d3e7b8a	1593	return( 1 );
maclobdell	0:f7c60d3e7b8a	1594	}
maclobdell	0:f7c60d3e7b8a	1595
maclobdell	0:f7c60d3e7b8a	1596	cur = cur->next;
maclobdell	0:f7c60d3e7b8a	1597	}
maclobdell	0:f7c60d3e7b8a	1598
maclobdell	0:f7c60d3e7b8a	1599	return( 0 );
maclobdell	0:f7c60d3e7b8a	1600	}
maclobdell	0:f7c60d3e7b8a	1601
maclobdell	0:f7c60d3e7b8a	1602	/*
maclobdell	0:f7c60d3e7b8a	1603	* Check that the given certificate is valid according to the CRL.
maclobdell	0:f7c60d3e7b8a	1604	*/
maclobdell	0:f7c60d3e7b8a	1605	static int x509_crt_verifycrl( mbedtls_x509_crt crt, mbedtls_x509_crt ca,
maclobdell	0:f7c60d3e7b8a	1606	mbedtls_x509_crl *crl_list,
maclobdell	0:f7c60d3e7b8a	1607	const mbedtls_x509_crt_profile *profile )
maclobdell	0:f7c60d3e7b8a	1608	{
maclobdell	0:f7c60d3e7b8a	1609	int flags = 0;
maclobdell	0:f7c60d3e7b8a	1610	unsigned char hash[MBEDTLS_MD_MAX_SIZE];
maclobdell	0:f7c60d3e7b8a	1611	const mbedtls_md_info_t *md_info;
maclobdell	0:f7c60d3e7b8a	1612
maclobdell	0:f7c60d3e7b8a	1613	if( ca == NULL )
maclobdell	0:f7c60d3e7b8a	1614	return( flags );
maclobdell	0:f7c60d3e7b8a	1615
maclobdell	0:f7c60d3e7b8a	1616	/*
maclobdell	0:f7c60d3e7b8a	1617	* TODO: What happens if no CRL is present?
maclobdell	0:f7c60d3e7b8a	1618	* Suggestion: Revocation state should be unknown if no CRL is present.
maclobdell	0:f7c60d3e7b8a	1619	* For backwards compatibility this is not yet implemented.
maclobdell	0:f7c60d3e7b8a	1620	*/
maclobdell	0:f7c60d3e7b8a	1621
maclobdell	0:f7c60d3e7b8a	1622	while( crl_list != NULL )
maclobdell	0:f7c60d3e7b8a	1623	{
maclobdell	0:f7c60d3e7b8a	1624	if( crl_list->version == 0 \|\|
maclobdell	0:f7c60d3e7b8a	1625	crl_list->issuer_raw.len != ca->subject_raw.len \|\|
maclobdell	0:f7c60d3e7b8a	1626	memcmp( crl_list->issuer_raw.p, ca->subject_raw.p,
maclobdell	0:f7c60d3e7b8a	1627	crl_list->issuer_raw.len ) != 0 )
maclobdell	0:f7c60d3e7b8a	1628	{
maclobdell	0:f7c60d3e7b8a	1629	crl_list = crl_list->next;
maclobdell	0:f7c60d3e7b8a	1630	continue;
maclobdell	0:f7c60d3e7b8a	1631	}
maclobdell	0:f7c60d3e7b8a	1632
maclobdell	0:f7c60d3e7b8a	1633	/*
maclobdell	0:f7c60d3e7b8a	1634	* Check if the CA is configured to sign CRLs
maclobdell	0:f7c60d3e7b8a	1635	*/
maclobdell	0:f7c60d3e7b8a	1636	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
maclobdell	0:f7c60d3e7b8a	1637	if( mbedtls_x509_crt_check_key_usage( ca, MBEDTLS_X509_KU_CRL_SIGN ) != 0 )
maclobdell	0:f7c60d3e7b8a	1638	{
maclobdell	0:f7c60d3e7b8a	1639	flags \|= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
maclobdell	0:f7c60d3e7b8a	1640	break;
maclobdell	0:f7c60d3e7b8a	1641	}
maclobdell	0:f7c60d3e7b8a	1642	#endif
maclobdell	0:f7c60d3e7b8a	1643
maclobdell	0:f7c60d3e7b8a	1644	/*
maclobdell	0:f7c60d3e7b8a	1645	* Check if CRL is correctly signed by the trusted CA
maclobdell	0:f7c60d3e7b8a	1646	*/
maclobdell	0:f7c60d3e7b8a	1647	if( x509_profile_check_md_alg( profile, crl_list->sig_md ) != 0 )
maclobdell	0:f7c60d3e7b8a	1648	flags \|= MBEDTLS_X509_BADCRL_BAD_MD;
maclobdell	0:f7c60d3e7b8a	1649
maclobdell	0:f7c60d3e7b8a	1650	if( x509_profile_check_pk_alg( profile, crl_list->sig_pk ) != 0 )
maclobdell	0:f7c60d3e7b8a	1651	flags \|= MBEDTLS_X509_BADCRL_BAD_PK;
maclobdell	0:f7c60d3e7b8a	1652
maclobdell	0:f7c60d3e7b8a	1653	md_info = mbedtls_md_info_from_type( crl_list->sig_md );
maclobdell	0:f7c60d3e7b8a	1654	if( md_info == NULL )
maclobdell	0:f7c60d3e7b8a	1655	{
maclobdell	0:f7c60d3e7b8a	1656	/*
maclobdell	0:f7c60d3e7b8a	1657	* Cannot check 'unknown' hash
maclobdell	0:f7c60d3e7b8a	1658	*/
maclobdell	0:f7c60d3e7b8a	1659	flags \|= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
maclobdell	0:f7c60d3e7b8a	1660	break;
maclobdell	0:f7c60d3e7b8a	1661	}
maclobdell	0:f7c60d3e7b8a	1662
maclobdell	0:f7c60d3e7b8a	1663	mbedtls_md( md_info, crl_list->tbs.p, crl_list->tbs.len, hash );
maclobdell	0:f7c60d3e7b8a	1664
maclobdell	0:f7c60d3e7b8a	1665	if( x509_profile_check_key( profile, crl_list->sig_pk, &ca->pk ) != 0 )
maclobdell	0:f7c60d3e7b8a	1666	flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
maclobdell	0:f7c60d3e7b8a	1667
maclobdell	0:f7c60d3e7b8a	1668	if( mbedtls_pk_verify_ext( crl_list->sig_pk, crl_list->sig_opts, &ca->pk,
maclobdell	0:f7c60d3e7b8a	1669	crl_list->sig_md, hash, mbedtls_md_get_size( md_info ),
maclobdell	0:f7c60d3e7b8a	1670	crl_list->sig.p, crl_list->sig.len ) != 0 )
maclobdell	0:f7c60d3e7b8a	1671	{
maclobdell	0:f7c60d3e7b8a	1672	flags \|= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
maclobdell	0:f7c60d3e7b8a	1673	break;
maclobdell	0:f7c60d3e7b8a	1674	}
maclobdell	0:f7c60d3e7b8a	1675
maclobdell	0:f7c60d3e7b8a	1676	/*
maclobdell	0:f7c60d3e7b8a	1677	* Check for validity of CRL (Do not drop out)
maclobdell	0:f7c60d3e7b8a	1678	*/
maclobdell	0:f7c60d3e7b8a	1679	if( mbedtls_x509_time_is_past( &crl_list->next_update ) )
maclobdell	0:f7c60d3e7b8a	1680	flags \|= MBEDTLS_X509_BADCRL_EXPIRED;
maclobdell	0:f7c60d3e7b8a	1681
maclobdell	0:f7c60d3e7b8a	1682	if( mbedtls_x509_time_is_future( &crl_list->this_update ) )
maclobdell	0:f7c60d3e7b8a	1683	flags \|= MBEDTLS_X509_BADCRL_FUTURE;
maclobdell	0:f7c60d3e7b8a	1684
maclobdell	0:f7c60d3e7b8a	1685	/*
maclobdell	0:f7c60d3e7b8a	1686	* Check if certificate is revoked
maclobdell	0:f7c60d3e7b8a	1687	*/
maclobdell	0:f7c60d3e7b8a	1688	if( mbedtls_x509_crt_is_revoked( crt, crl_list ) )
maclobdell	0:f7c60d3e7b8a	1689	{
maclobdell	0:f7c60d3e7b8a	1690	flags \|= MBEDTLS_X509_BADCERT_REVOKED;
maclobdell	0:f7c60d3e7b8a	1691	break;
maclobdell	0:f7c60d3e7b8a	1692	}
maclobdell	0:f7c60d3e7b8a	1693
maclobdell	0:f7c60d3e7b8a	1694	crl_list = crl_list->next;
maclobdell	0:f7c60d3e7b8a	1695	}
maclobdell	0:f7c60d3e7b8a	1696
maclobdell	0:f7c60d3e7b8a	1697	return( flags );
maclobdell	0:f7c60d3e7b8a	1698	}
maclobdell	0:f7c60d3e7b8a	1699	#endif /* MBEDTLS_X509_CRL_PARSE_C */
maclobdell	0:f7c60d3e7b8a	1700
maclobdell	0:f7c60d3e7b8a	1701	/*
maclobdell	0:f7c60d3e7b8a	1702	* Like memcmp, but case-insensitive and always returns -1 if different
maclobdell	0:f7c60d3e7b8a	1703	*/
maclobdell	0:f7c60d3e7b8a	1704	static int x509_memcasecmp( const void s1, const void s2, size_t len )
maclobdell	0:f7c60d3e7b8a	1705	{
maclobdell	0:f7c60d3e7b8a	1706	size_t i;
maclobdell	0:f7c60d3e7b8a	1707	unsigned char diff;
maclobdell	0:f7c60d3e7b8a	1708	const unsigned char n1 = s1, n2 = s2;
maclobdell	0:f7c60d3e7b8a	1709
maclobdell	0:f7c60d3e7b8a	1710	for( i = 0; i < len; i++ )
maclobdell	0:f7c60d3e7b8a	1711	{
maclobdell	0:f7c60d3e7b8a	1712	diff = n1[i] ^ n2[i];
maclobdell	0:f7c60d3e7b8a	1713
maclobdell	0:f7c60d3e7b8a	1714	if( diff == 0 )
maclobdell	0:f7c60d3e7b8a	1715	continue;
maclobdell	0:f7c60d3e7b8a	1716
maclobdell	0:f7c60d3e7b8a	1717	if( diff == 32 &&
maclobdell	0:f7c60d3e7b8a	1718	( ( n1[i] >= 'a' && n1[i] <= 'z' ) \|\|
maclobdell	0:f7c60d3e7b8a	1719	( n1[i] >= 'A' && n1[i] <= 'Z' ) ) )
maclobdell	0:f7c60d3e7b8a	1720	{
maclobdell	0:f7c60d3e7b8a	1721	continue;
maclobdell	0:f7c60d3e7b8a	1722	}
maclobdell	0:f7c60d3e7b8a	1723
maclobdell	0:f7c60d3e7b8a	1724	return( -1 );
maclobdell	0:f7c60d3e7b8a	1725	}
maclobdell	0:f7c60d3e7b8a	1726
maclobdell	0:f7c60d3e7b8a	1727	return( 0 );
maclobdell	0:f7c60d3e7b8a	1728	}
maclobdell	0:f7c60d3e7b8a	1729
maclobdell	0:f7c60d3e7b8a	1730	/*
maclobdell	0:f7c60d3e7b8a	1731	* Return 0 if name matches wildcard, -1 otherwise
maclobdell	0:f7c60d3e7b8a	1732	*/
maclobdell	0:f7c60d3e7b8a	1733	static int x509_check_wildcard( const char cn, mbedtls_x509_buf name )
maclobdell	0:f7c60d3e7b8a	1734	{
maclobdell	0:f7c60d3e7b8a	1735	size_t i;
maclobdell	0:f7c60d3e7b8a	1736	size_t cn_idx = 0, cn_len = strlen( cn );
maclobdell	0:f7c60d3e7b8a	1737
maclobdell	0:f7c60d3e7b8a	1738	if( name->len < 3 \|\| name->p[0] != '*' \|\| name->p[1] != '.' )
maclobdell	0:f7c60d3e7b8a	1739	return( 0 );
maclobdell	0:f7c60d3e7b8a	1740
maclobdell	0:f7c60d3e7b8a	1741	for( i = 0; i < cn_len; ++i )
maclobdell	0:f7c60d3e7b8a	1742	{
maclobdell	0:f7c60d3e7b8a	1743	if( cn[i] == '.' )
maclobdell	0:f7c60d3e7b8a	1744	{
maclobdell	0:f7c60d3e7b8a	1745	cn_idx = i;
maclobdell	0:f7c60d3e7b8a	1746	break;
maclobdell	0:f7c60d3e7b8a	1747	}
maclobdell	0:f7c60d3e7b8a	1748	}
maclobdell	0:f7c60d3e7b8a	1749
maclobdell	0:f7c60d3e7b8a	1750	if( cn_idx == 0 )
maclobdell	0:f7c60d3e7b8a	1751	return( -1 );
maclobdell	0:f7c60d3e7b8a	1752
maclobdell	0:f7c60d3e7b8a	1753	if( cn_len - cn_idx == name->len - 1 &&
maclobdell	0:f7c60d3e7b8a	1754	x509_memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 )
maclobdell	0:f7c60d3e7b8a	1755	{
maclobdell	0:f7c60d3e7b8a	1756	return( 0 );
maclobdell	0:f7c60d3e7b8a	1757	}
maclobdell	0:f7c60d3e7b8a	1758
maclobdell	0:f7c60d3e7b8a	1759	return( -1 );
maclobdell	0:f7c60d3e7b8a	1760	}
maclobdell	0:f7c60d3e7b8a	1761
maclobdell	0:f7c60d3e7b8a	1762	/*
maclobdell	0:f7c60d3e7b8a	1763	* Compare two X.509 strings, case-insensitive, and allowing for some encoding
maclobdell	0:f7c60d3e7b8a	1764	* variations (but not all).
maclobdell	0:f7c60d3e7b8a	1765	*
maclobdell	0:f7c60d3e7b8a	1766	* Return 0 if equal, -1 otherwise.
maclobdell	0:f7c60d3e7b8a	1767	*/
maclobdell	0:f7c60d3e7b8a	1768	static int x509_string_cmp( const mbedtls_x509_buf a, const mbedtls_x509_buf b )
maclobdell	0:f7c60d3e7b8a	1769	{
maclobdell	0:f7c60d3e7b8a	1770	if( a->tag == b->tag &&
maclobdell	0:f7c60d3e7b8a	1771	a->len == b->len &&
maclobdell	0:f7c60d3e7b8a	1772	memcmp( a->p, b->p, b->len ) == 0 )
maclobdell	0:f7c60d3e7b8a	1773	{
maclobdell	0:f7c60d3e7b8a	1774	return( 0 );
maclobdell	0:f7c60d3e7b8a	1775	}
maclobdell	0:f7c60d3e7b8a	1776
maclobdell	0:f7c60d3e7b8a	1777	if( ( a->tag == MBEDTLS_ASN1_UTF8_STRING \|\| a->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
maclobdell	0:f7c60d3e7b8a	1778	( b->tag == MBEDTLS_ASN1_UTF8_STRING \|\| b->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
maclobdell	0:f7c60d3e7b8a	1779	a->len == b->len &&
maclobdell	0:f7c60d3e7b8a	1780	x509_memcasecmp( a->p, b->p, b->len ) == 0 )
maclobdell	0:f7c60d3e7b8a	1781	{
maclobdell	0:f7c60d3e7b8a	1782	return( 0 );
maclobdell	0:f7c60d3e7b8a	1783	}
maclobdell	0:f7c60d3e7b8a	1784
maclobdell	0:f7c60d3e7b8a	1785	return( -1 );
maclobdell	0:f7c60d3e7b8a	1786	}
maclobdell	0:f7c60d3e7b8a	1787
maclobdell	0:f7c60d3e7b8a	1788	/*
maclobdell	0:f7c60d3e7b8a	1789	* Compare two X.509 Names (aka rdnSequence).
maclobdell	0:f7c60d3e7b8a	1790	*
maclobdell	0:f7c60d3e7b8a	1791	* See RFC 5280 section 7.1, though we don't implement the whole algorithm:
maclobdell	0:f7c60d3e7b8a	1792	* we sometimes return unequal when the full algorithm would return equal,
maclobdell	0:f7c60d3e7b8a	1793	* but never the other way. (In particular, we don't do Unicode normalisation
maclobdell	0:f7c60d3e7b8a	1794	* or space folding.)
maclobdell	0:f7c60d3e7b8a	1795	*
maclobdell	0:f7c60d3e7b8a	1796	* Return 0 if equal, -1 otherwise.
maclobdell	0:f7c60d3e7b8a	1797	*/
maclobdell	0:f7c60d3e7b8a	1798	static int x509_name_cmp( const mbedtls_x509_name a, const mbedtls_x509_name b )
maclobdell	0:f7c60d3e7b8a	1799	{
maclobdell	0:f7c60d3e7b8a	1800	/* Avoid recursion, it might not be optimised by the compiler */
maclobdell	0:f7c60d3e7b8a	1801	while( a != NULL \|\| b != NULL )
maclobdell	0:f7c60d3e7b8a	1802	{
maclobdell	0:f7c60d3e7b8a	1803	if( a == NULL \|\| b == NULL )
maclobdell	0:f7c60d3e7b8a	1804	return( -1 );
maclobdell	0:f7c60d3e7b8a	1805
maclobdell	0:f7c60d3e7b8a	1806	/* type */
maclobdell	0:f7c60d3e7b8a	1807	if( a->oid.tag != b->oid.tag \|\|
maclobdell	0:f7c60d3e7b8a	1808	a->oid.len != b->oid.len \|\|
maclobdell	0:f7c60d3e7b8a	1809	memcmp( a->oid.p, b->oid.p, b->oid.len ) != 0 )
maclobdell	0:f7c60d3e7b8a	1810	{
maclobdell	0:f7c60d3e7b8a	1811	return( -1 );
maclobdell	0:f7c60d3e7b8a	1812	}
maclobdell	0:f7c60d3e7b8a	1813
maclobdell	0:f7c60d3e7b8a	1814	/* value */
maclobdell	0:f7c60d3e7b8a	1815	if( x509_string_cmp( &a->val, &b->val ) != 0 )
maclobdell	0:f7c60d3e7b8a	1816	return( -1 );
maclobdell	0:f7c60d3e7b8a	1817
maclobdell	0:f7c60d3e7b8a	1818	/* structure of the list of sets */
maclobdell	0:f7c60d3e7b8a	1819	if( a->next_merged != b->next_merged )
maclobdell	0:f7c60d3e7b8a	1820	return( -1 );
maclobdell	0:f7c60d3e7b8a	1821
maclobdell	0:f7c60d3e7b8a	1822	a = a->next;
maclobdell	0:f7c60d3e7b8a	1823	b = b->next;
maclobdell	0:f7c60d3e7b8a	1824	}
maclobdell	0:f7c60d3e7b8a	1825
maclobdell	0:f7c60d3e7b8a	1826	/* a == NULL == b */
maclobdell	0:f7c60d3e7b8a	1827	return( 0 );
maclobdell	0:f7c60d3e7b8a	1828	}
maclobdell	0:f7c60d3e7b8a	1829
maclobdell	0:f7c60d3e7b8a	1830	/*
maclobdell	0:f7c60d3e7b8a	1831	* Check if 'parent' is a suitable parent (signing CA) for 'child'.
maclobdell	0:f7c60d3e7b8a	1832	* Return 0 if yes, -1 if not.
maclobdell	0:f7c60d3e7b8a	1833	*
maclobdell	0:f7c60d3e7b8a	1834	* top means parent is a locally-trusted certificate
maclobdell	0:f7c60d3e7b8a	1835	* bottom means child is the end entity cert
maclobdell	0:f7c60d3e7b8a	1836	*/
maclobdell	0:f7c60d3e7b8a	1837	static int x509_crt_check_parent( const mbedtls_x509_crt *child,
maclobdell	0:f7c60d3e7b8a	1838	const mbedtls_x509_crt *parent,
maclobdell	0:f7c60d3e7b8a	1839	int top, int bottom )
maclobdell	0:f7c60d3e7b8a	1840	{
maclobdell	0:f7c60d3e7b8a	1841	int need_ca_bit;
maclobdell	0:f7c60d3e7b8a	1842
maclobdell	0:f7c60d3e7b8a	1843	/* Parent must be the issuer */
maclobdell	0:f7c60d3e7b8a	1844	if( x509_name_cmp( &child->issuer, &parent->subject ) != 0 )
maclobdell	0:f7c60d3e7b8a	1845	return( -1 );
maclobdell	0:f7c60d3e7b8a	1846
maclobdell	0:f7c60d3e7b8a	1847	/* Parent must have the basicConstraints CA bit set as a general rule */
maclobdell	0:f7c60d3e7b8a	1848	need_ca_bit = 1;
maclobdell	0:f7c60d3e7b8a	1849
maclobdell	0:f7c60d3e7b8a	1850	/* Exception: v1/v2 certificates that are locally trusted. */
maclobdell	0:f7c60d3e7b8a	1851	if( top && parent->version < 3 )
maclobdell	0:f7c60d3e7b8a	1852	need_ca_bit = 0;
maclobdell	0:f7c60d3e7b8a	1853
maclobdell	0:f7c60d3e7b8a	1854	/* Exception: self-signed end-entity certs that are locally trusted. */
maclobdell	0:f7c60d3e7b8a	1855	if( top && bottom &&
maclobdell	0:f7c60d3e7b8a	1856	child->raw.len == parent->raw.len &&
maclobdell	0:f7c60d3e7b8a	1857	memcmp( child->raw.p, parent->raw.p, child->raw.len ) == 0 )
maclobdell	0:f7c60d3e7b8a	1858	{
maclobdell	0:f7c60d3e7b8a	1859	need_ca_bit = 0;
maclobdell	0:f7c60d3e7b8a	1860	}
maclobdell	0:f7c60d3e7b8a	1861
maclobdell	0:f7c60d3e7b8a	1862	if( need_ca_bit && ! parent->ca_istrue )
maclobdell	0:f7c60d3e7b8a	1863	return( -1 );
maclobdell	0:f7c60d3e7b8a	1864
maclobdell	0:f7c60d3e7b8a	1865	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
maclobdell	0:f7c60d3e7b8a	1866	if( need_ca_bit &&
maclobdell	0:f7c60d3e7b8a	1867	mbedtls_x509_crt_check_key_usage( parent, MBEDTLS_X509_KU_KEY_CERT_SIGN ) != 0 )
maclobdell	0:f7c60d3e7b8a	1868	{
maclobdell	0:f7c60d3e7b8a	1869	return( -1 );
maclobdell	0:f7c60d3e7b8a	1870	}
maclobdell	0:f7c60d3e7b8a	1871	#endif
maclobdell	0:f7c60d3e7b8a	1872
maclobdell	0:f7c60d3e7b8a	1873	return( 0 );
maclobdell	0:f7c60d3e7b8a	1874	}
maclobdell	0:f7c60d3e7b8a	1875
maclobdell	0:f7c60d3e7b8a	1876	static int x509_crt_verify_top(
maclobdell	0:f7c60d3e7b8a	1877	mbedtls_x509_crt child, mbedtls_x509_crt trust_ca,
maclobdell	0:f7c60d3e7b8a	1878	mbedtls_x509_crl *ca_crl,
maclobdell	0:f7c60d3e7b8a	1879	const mbedtls_x509_crt_profile *profile,
maclobdell	0:f7c60d3e7b8a	1880	int path_cnt, int self_cnt, uint32_t *flags,
maclobdell	0:f7c60d3e7b8a	1881	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
maclobdell	0:f7c60d3e7b8a	1882	void *p_vrfy )
maclobdell	0:f7c60d3e7b8a	1883	{
maclobdell	0:f7c60d3e7b8a	1884	int ret;
maclobdell	0:f7c60d3e7b8a	1885	uint32_t ca_flags = 0;
maclobdell	0:f7c60d3e7b8a	1886	int check_path_cnt;
maclobdell	0:f7c60d3e7b8a	1887	unsigned char hash[MBEDTLS_MD_MAX_SIZE];
maclobdell	0:f7c60d3e7b8a	1888	const mbedtls_md_info_t *md_info;
maclobdell	0:f7c60d3e7b8a	1889
maclobdell	0:f7c60d3e7b8a	1890	if( mbedtls_x509_time_is_past( &child->valid_to ) )
maclobdell	0:f7c60d3e7b8a	1891	*flags \|= MBEDTLS_X509_BADCERT_EXPIRED;
maclobdell	0:f7c60d3e7b8a	1892
maclobdell	0:f7c60d3e7b8a	1893	if( mbedtls_x509_time_is_future( &child->valid_from ) )
maclobdell	0:f7c60d3e7b8a	1894	*flags \|= MBEDTLS_X509_BADCERT_FUTURE;
maclobdell	0:f7c60d3e7b8a	1895
maclobdell	0:f7c60d3e7b8a	1896	if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
maclobdell	0:f7c60d3e7b8a	1897	*flags \|= MBEDTLS_X509_BADCERT_BAD_MD;
maclobdell	0:f7c60d3e7b8a	1898
maclobdell	0:f7c60d3e7b8a	1899	if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
maclobdell	0:f7c60d3e7b8a	1900	*flags \|= MBEDTLS_X509_BADCERT_BAD_PK;
maclobdell	0:f7c60d3e7b8a	1901
maclobdell	0:f7c60d3e7b8a	1902	/*
maclobdell	0:f7c60d3e7b8a	1903	* Child is the top of the chain. Check against the trust_ca list.
maclobdell	0:f7c60d3e7b8a	1904	*/
maclobdell	0:f7c60d3e7b8a	1905	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
maclobdell	0:f7c60d3e7b8a	1906
maclobdell	0:f7c60d3e7b8a	1907	md_info = mbedtls_md_info_from_type( child->sig_md );
maclobdell	0:f7c60d3e7b8a	1908	if( md_info == NULL )
maclobdell	0:f7c60d3e7b8a	1909	{
maclobdell	0:f7c60d3e7b8a	1910	/*
maclobdell	0:f7c60d3e7b8a	1911	* Cannot check 'unknown', no need to try any CA
maclobdell	0:f7c60d3e7b8a	1912	*/
maclobdell	0:f7c60d3e7b8a	1913	trust_ca = NULL;
maclobdell	0:f7c60d3e7b8a	1914	}
maclobdell	0:f7c60d3e7b8a	1915	else
maclobdell	0:f7c60d3e7b8a	1916	mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash );
maclobdell	0:f7c60d3e7b8a	1917
maclobdell	0:f7c60d3e7b8a	1918	for( /* trust_ca */ ; trust_ca != NULL; trust_ca = trust_ca->next )
maclobdell	0:f7c60d3e7b8a	1919	{
maclobdell	0:f7c60d3e7b8a	1920	if( x509_crt_check_parent( child, trust_ca, 1, path_cnt == 0 ) != 0 )
maclobdell	0:f7c60d3e7b8a	1921	continue;
maclobdell	0:f7c60d3e7b8a	1922
maclobdell	0:f7c60d3e7b8a	1923	check_path_cnt = path_cnt + 1;
maclobdell	0:f7c60d3e7b8a	1924
maclobdell	0:f7c60d3e7b8a	1925	/*
maclobdell	0:f7c60d3e7b8a	1926	* Reduce check_path_cnt to check against if top of the chain is
maclobdell	0:f7c60d3e7b8a	1927	* the same as the trusted CA
maclobdell	0:f7c60d3e7b8a	1928	*/
maclobdell	0:f7c60d3e7b8a	1929	if( child->subject_raw.len == trust_ca->subject_raw.len &&
maclobdell	0:f7c60d3e7b8a	1930	memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
maclobdell	0:f7c60d3e7b8a	1931	child->issuer_raw.len ) == 0 )
maclobdell	0:f7c60d3e7b8a	1932	{
maclobdell	0:f7c60d3e7b8a	1933	check_path_cnt--;
maclobdell	0:f7c60d3e7b8a	1934	}
maclobdell	0:f7c60d3e7b8a	1935
maclobdell	0:f7c60d3e7b8a	1936	/* Self signed certificates do not count towards the limit */
maclobdell	0:f7c60d3e7b8a	1937	if( trust_ca->max_pathlen > 0 &&
maclobdell	0:f7c60d3e7b8a	1938	trust_ca->max_pathlen < check_path_cnt - self_cnt )
maclobdell	0:f7c60d3e7b8a	1939	{
maclobdell	0:f7c60d3e7b8a	1940	continue;
maclobdell	0:f7c60d3e7b8a	1941	}
maclobdell	0:f7c60d3e7b8a	1942
maclobdell	0:f7c60d3e7b8a	1943	if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &trust_ca->pk,
maclobdell	0:f7c60d3e7b8a	1944	child->sig_md, hash, mbedtls_md_get_size( md_info ),
maclobdell	0:f7c60d3e7b8a	1945	child->sig.p, child->sig.len ) != 0 )
maclobdell	0:f7c60d3e7b8a	1946	{
maclobdell	0:f7c60d3e7b8a	1947	continue;
maclobdell	0:f7c60d3e7b8a	1948	}
maclobdell	0:f7c60d3e7b8a	1949
maclobdell	0:f7c60d3e7b8a	1950	/*
maclobdell	0:f7c60d3e7b8a	1951	* Top of chain is signed by a trusted CA
maclobdell	0:f7c60d3e7b8a	1952	*/
maclobdell	0:f7c60d3e7b8a	1953	*flags &= ~MBEDTLS_X509_BADCERT_NOT_TRUSTED;
maclobdell	0:f7c60d3e7b8a	1954
maclobdell	0:f7c60d3e7b8a	1955	if( x509_profile_check_key( profile, child->sig_pk, &trust_ca->pk ) != 0 )
maclobdell	0:f7c60d3e7b8a	1956	*flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
maclobdell	0:f7c60d3e7b8a	1957
maclobdell	0:f7c60d3e7b8a	1958	break;
maclobdell	0:f7c60d3e7b8a	1959	}
maclobdell	0:f7c60d3e7b8a	1960
maclobdell	0:f7c60d3e7b8a	1961	/*
maclobdell	0:f7c60d3e7b8a	1962	* If top of chain is not the same as the trusted CA send a verify request
maclobdell	0:f7c60d3e7b8a	1963	* to the callback for any issues with validity and CRL presence for the
maclobdell	0:f7c60d3e7b8a	1964	* trusted CA certificate.
maclobdell	0:f7c60d3e7b8a	1965	*/
maclobdell	0:f7c60d3e7b8a	1966	if( trust_ca != NULL &&
maclobdell	0:f7c60d3e7b8a	1967	( child->subject_raw.len != trust_ca->subject_raw.len \|\|
maclobdell	0:f7c60d3e7b8a	1968	memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
maclobdell	0:f7c60d3e7b8a	1969	child->issuer_raw.len ) != 0 ) )
maclobdell	0:f7c60d3e7b8a	1970	{
maclobdell	0:f7c60d3e7b8a	1971	#if defined(MBEDTLS_X509_CRL_PARSE_C)
maclobdell	0:f7c60d3e7b8a	1972	/* Check trusted CA's CRL for the chain's top crt */
maclobdell	0:f7c60d3e7b8a	1973	*flags \|= x509_crt_verifycrl( child, trust_ca, ca_crl, profile );
maclobdell	0:f7c60d3e7b8a	1974	#else
maclobdell	0:f7c60d3e7b8a	1975	((void) ca_crl);
maclobdell	0:f7c60d3e7b8a	1976	#endif
maclobdell	0:f7c60d3e7b8a	1977
maclobdell	0:f7c60d3e7b8a	1978	if( mbedtls_x509_time_is_past( &trust_ca->valid_to ) )
maclobdell	0:f7c60d3e7b8a	1979	ca_flags \|= MBEDTLS_X509_BADCERT_EXPIRED;
maclobdell	0:f7c60d3e7b8a	1980
maclobdell	0:f7c60d3e7b8a	1981	if( mbedtls_x509_time_is_future( &trust_ca->valid_from ) )
maclobdell	0:f7c60d3e7b8a	1982	ca_flags \|= MBEDTLS_X509_BADCERT_FUTURE;
maclobdell	0:f7c60d3e7b8a	1983
maclobdell	0:f7c60d3e7b8a	1984	if( NULL != f_vrfy )
maclobdell	0:f7c60d3e7b8a	1985	{
maclobdell	0:f7c60d3e7b8a	1986	if( ( ret = f_vrfy( p_vrfy, trust_ca, path_cnt + 1,
maclobdell	0:f7c60d3e7b8a	1987	&ca_flags ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	1988	{
maclobdell	0:f7c60d3e7b8a	1989	return( ret );
maclobdell	0:f7c60d3e7b8a	1990	}
maclobdell	0:f7c60d3e7b8a	1991	}
maclobdell	0:f7c60d3e7b8a	1992	}
maclobdell	0:f7c60d3e7b8a	1993
maclobdell	0:f7c60d3e7b8a	1994	/* Call callback on top cert */
maclobdell	0:f7c60d3e7b8a	1995	if( NULL != f_vrfy )
maclobdell	0:f7c60d3e7b8a	1996	{
maclobdell	0:f7c60d3e7b8a	1997	if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	1998	return( ret );
maclobdell	0:f7c60d3e7b8a	1999	}
maclobdell	0:f7c60d3e7b8a	2000
maclobdell	0:f7c60d3e7b8a	2001	*flags \|= ca_flags;
maclobdell	0:f7c60d3e7b8a	2002
maclobdell	0:f7c60d3e7b8a	2003	return( 0 );
maclobdell	0:f7c60d3e7b8a	2004	}
maclobdell	0:f7c60d3e7b8a	2005
maclobdell	0:f7c60d3e7b8a	2006	static int x509_crt_verify_child(
maclobdell	0:f7c60d3e7b8a	2007	mbedtls_x509_crt child, mbedtls_x509_crt parent,
maclobdell	0:f7c60d3e7b8a	2008	mbedtls_x509_crt trust_ca, mbedtls_x509_crl ca_crl,
maclobdell	0:f7c60d3e7b8a	2009	const mbedtls_x509_crt_profile *profile,
maclobdell	0:f7c60d3e7b8a	2010	int path_cnt, int self_cnt, uint32_t *flags,
maclobdell	0:f7c60d3e7b8a	2011	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
maclobdell	0:f7c60d3e7b8a	2012	void *p_vrfy )
maclobdell	0:f7c60d3e7b8a	2013	{
maclobdell	0:f7c60d3e7b8a	2014	int ret;
maclobdell	0:f7c60d3e7b8a	2015	uint32_t parent_flags = 0;
maclobdell	0:f7c60d3e7b8a	2016	unsigned char hash[MBEDTLS_MD_MAX_SIZE];
maclobdell	0:f7c60d3e7b8a	2017	mbedtls_x509_crt *grandparent;
maclobdell	0:f7c60d3e7b8a	2018	const mbedtls_md_info_t *md_info;
maclobdell	0:f7c60d3e7b8a	2019
maclobdell	0:f7c60d3e7b8a	2020	/* Counting intermediate self signed certificates */
maclobdell	0:f7c60d3e7b8a	2021	if( ( path_cnt != 0 ) && x509_name_cmp( &child->issuer, &child->subject ) == 0 )
maclobdell	0:f7c60d3e7b8a	2022	self_cnt++;
maclobdell	0:f7c60d3e7b8a	2023
maclobdell	0:f7c60d3e7b8a	2024	/* path_cnt is 0 for the first intermediate CA */
maclobdell	0:f7c60d3e7b8a	2025	if( 1 + path_cnt > MBEDTLS_X509_MAX_INTERMEDIATE_CA )
maclobdell	0:f7c60d3e7b8a	2026	{
maclobdell	0:f7c60d3e7b8a	2027	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
maclobdell	0:f7c60d3e7b8a	2028	return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
maclobdell	0:f7c60d3e7b8a	2029	}
maclobdell	0:f7c60d3e7b8a	2030
maclobdell	0:f7c60d3e7b8a	2031	if( mbedtls_x509_time_is_past( &child->valid_to ) )
maclobdell	0:f7c60d3e7b8a	2032	*flags \|= MBEDTLS_X509_BADCERT_EXPIRED;
maclobdell	0:f7c60d3e7b8a	2033
maclobdell	0:f7c60d3e7b8a	2034	if( mbedtls_x509_time_is_future( &child->valid_from ) )
maclobdell	0:f7c60d3e7b8a	2035	*flags \|= MBEDTLS_X509_BADCERT_FUTURE;
maclobdell	0:f7c60d3e7b8a	2036
maclobdell	0:f7c60d3e7b8a	2037	if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
maclobdell	0:f7c60d3e7b8a	2038	*flags \|= MBEDTLS_X509_BADCERT_BAD_MD;
maclobdell	0:f7c60d3e7b8a	2039
maclobdell	0:f7c60d3e7b8a	2040	if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
maclobdell	0:f7c60d3e7b8a	2041	*flags \|= MBEDTLS_X509_BADCERT_BAD_PK;
maclobdell	0:f7c60d3e7b8a	2042
maclobdell	0:f7c60d3e7b8a	2043	md_info = mbedtls_md_info_from_type( child->sig_md );
maclobdell	0:f7c60d3e7b8a	2044	if( md_info == NULL )
maclobdell	0:f7c60d3e7b8a	2045	{
maclobdell	0:f7c60d3e7b8a	2046	/*
maclobdell	0:f7c60d3e7b8a	2047	* Cannot check 'unknown' hash
maclobdell	0:f7c60d3e7b8a	2048	*/
maclobdell	0:f7c60d3e7b8a	2049	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
maclobdell	0:f7c60d3e7b8a	2050	}
maclobdell	0:f7c60d3e7b8a	2051	else
maclobdell	0:f7c60d3e7b8a	2052	{
maclobdell	0:f7c60d3e7b8a	2053	mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash );
maclobdell	0:f7c60d3e7b8a	2054
maclobdell	0:f7c60d3e7b8a	2055	if( x509_profile_check_key( profile, child->sig_pk, &parent->pk ) != 0 )
maclobdell	0:f7c60d3e7b8a	2056	*flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
maclobdell	0:f7c60d3e7b8a	2057
maclobdell	0:f7c60d3e7b8a	2058	if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &parent->pk,
maclobdell	0:f7c60d3e7b8a	2059	child->sig_md, hash, mbedtls_md_get_size( md_info ),
maclobdell	0:f7c60d3e7b8a	2060	child->sig.p, child->sig.len ) != 0 )
maclobdell	0:f7c60d3e7b8a	2061	{
maclobdell	0:f7c60d3e7b8a	2062	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
maclobdell	0:f7c60d3e7b8a	2063	}
maclobdell	0:f7c60d3e7b8a	2064	}
maclobdell	0:f7c60d3e7b8a	2065
maclobdell	0:f7c60d3e7b8a	2066	#if defined(MBEDTLS_X509_CRL_PARSE_C)
maclobdell	0:f7c60d3e7b8a	2067	/* Check trusted CA's CRL for the given crt */
maclobdell	0:f7c60d3e7b8a	2068	*flags \|= x509_crt_verifycrl(child, parent, ca_crl, profile );
maclobdell	0:f7c60d3e7b8a	2069	#endif
maclobdell	0:f7c60d3e7b8a	2070
maclobdell	0:f7c60d3e7b8a	2071	/* Look for a grandparent in trusted CAs */
maclobdell	0:f7c60d3e7b8a	2072	for( grandparent = trust_ca;
maclobdell	0:f7c60d3e7b8a	2073	grandparent != NULL;
maclobdell	0:f7c60d3e7b8a	2074	grandparent = grandparent->next )
maclobdell	0:f7c60d3e7b8a	2075	{
maclobdell	0:f7c60d3e7b8a	2076	if( x509_crt_check_parent( parent, grandparent,
maclobdell	0:f7c60d3e7b8a	2077	0, path_cnt == 0 ) == 0 )
maclobdell	0:f7c60d3e7b8a	2078	break;
maclobdell	0:f7c60d3e7b8a	2079	}
maclobdell	0:f7c60d3e7b8a	2080
maclobdell	0:f7c60d3e7b8a	2081	if( grandparent != NULL )
maclobdell	0:f7c60d3e7b8a	2082	{
maclobdell	0:f7c60d3e7b8a	2083	ret = x509_crt_verify_top( parent, grandparent, ca_crl, profile,
maclobdell	0:f7c60d3e7b8a	2084	path_cnt + 1, self_cnt, &parent_flags, f_vrfy, p_vrfy );
maclobdell	0:f7c60d3e7b8a	2085	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	2086	return( ret );
maclobdell	0:f7c60d3e7b8a	2087	}
maclobdell	0:f7c60d3e7b8a	2088	else
maclobdell	0:f7c60d3e7b8a	2089	{
maclobdell	0:f7c60d3e7b8a	2090	/* Look for a grandparent upwards the chain */
maclobdell	0:f7c60d3e7b8a	2091	for( grandparent = parent->next;
maclobdell	0:f7c60d3e7b8a	2092	grandparent != NULL;
maclobdell	0:f7c60d3e7b8a	2093	grandparent = grandparent->next )
maclobdell	0:f7c60d3e7b8a	2094	{
maclobdell	0:f7c60d3e7b8a	2095	/* +2 because the current step is not yet accounted for
maclobdell	0:f7c60d3e7b8a	2096	* and because max_pathlen is one higher than it should be.
maclobdell	0:f7c60d3e7b8a	2097	* Also self signed certificates do not count to the limit. */
maclobdell	0:f7c60d3e7b8a	2098	if( grandparent->max_pathlen > 0 &&
maclobdell	0:f7c60d3e7b8a	2099	grandparent->max_pathlen < 2 + path_cnt - self_cnt )
maclobdell	0:f7c60d3e7b8a	2100	{
maclobdell	0:f7c60d3e7b8a	2101	continue;
maclobdell	0:f7c60d3e7b8a	2102	}
maclobdell	0:f7c60d3e7b8a	2103
maclobdell	0:f7c60d3e7b8a	2104	if( x509_crt_check_parent( parent, grandparent,
maclobdell	0:f7c60d3e7b8a	2105	0, path_cnt == 0 ) == 0 )
maclobdell	0:f7c60d3e7b8a	2106	break;
maclobdell	0:f7c60d3e7b8a	2107	}
maclobdell	0:f7c60d3e7b8a	2108
maclobdell	0:f7c60d3e7b8a	2109	/* Is our parent part of the chain or at the top? */
maclobdell	0:f7c60d3e7b8a	2110	if( grandparent != NULL )
maclobdell	0:f7c60d3e7b8a	2111	{
maclobdell	0:f7c60d3e7b8a	2112	ret = x509_crt_verify_child( parent, grandparent, trust_ca, ca_crl,
maclobdell	0:f7c60d3e7b8a	2113	profile, path_cnt + 1, self_cnt, &parent_flags,
maclobdell	0:f7c60d3e7b8a	2114	f_vrfy, p_vrfy );
maclobdell	0:f7c60d3e7b8a	2115	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	2116	return( ret );
maclobdell	0:f7c60d3e7b8a	2117	}
maclobdell	0:f7c60d3e7b8a	2118	else
maclobdell	0:f7c60d3e7b8a	2119	{
maclobdell	0:f7c60d3e7b8a	2120	ret = x509_crt_verify_top( parent, trust_ca, ca_crl, profile,
maclobdell	0:f7c60d3e7b8a	2121	path_cnt + 1, self_cnt, &parent_flags,
maclobdell	0:f7c60d3e7b8a	2122	f_vrfy, p_vrfy );
maclobdell	0:f7c60d3e7b8a	2123	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	2124	return( ret );
maclobdell	0:f7c60d3e7b8a	2125	}
maclobdell	0:f7c60d3e7b8a	2126	}
maclobdell	0:f7c60d3e7b8a	2127
maclobdell	0:f7c60d3e7b8a	2128	/* child is verified to be a child of the parent, call verify callback */
maclobdell	0:f7c60d3e7b8a	2129	if( NULL != f_vrfy )
maclobdell	0:f7c60d3e7b8a	2130	if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 )
maclobdell	0:f7c60d3e7b8a	2131	return( ret );
maclobdell	0:f7c60d3e7b8a	2132
maclobdell	0:f7c60d3e7b8a	2133	*flags \|= parent_flags;
maclobdell	0:f7c60d3e7b8a	2134
maclobdell	0:f7c60d3e7b8a	2135	return( 0 );
maclobdell	0:f7c60d3e7b8a	2136	}
maclobdell	0:f7c60d3e7b8a	2137
maclobdell	0:f7c60d3e7b8a	2138	/*
maclobdell	0:f7c60d3e7b8a	2139	* Verify the certificate validity
maclobdell	0:f7c60d3e7b8a	2140	*/
maclobdell	0:f7c60d3e7b8a	2141	int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt,
maclobdell	0:f7c60d3e7b8a	2142	mbedtls_x509_crt *trust_ca,
maclobdell	0:f7c60d3e7b8a	2143	mbedtls_x509_crl *ca_crl,
maclobdell	0:f7c60d3e7b8a	2144	const char cn, uint32_t flags,
maclobdell	0:f7c60d3e7b8a	2145	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
maclobdell	0:f7c60d3e7b8a	2146	void *p_vrfy )
maclobdell	0:f7c60d3e7b8a	2147	{
maclobdell	0:f7c60d3e7b8a	2148	return( mbedtls_x509_crt_verify_with_profile( crt, trust_ca, ca_crl,
maclobdell	0:f7c60d3e7b8a	2149	&mbedtls_x509_crt_profile_default, cn, flags, f_vrfy, p_vrfy ) );
maclobdell	0:f7c60d3e7b8a	2150	}
maclobdell	0:f7c60d3e7b8a	2151
maclobdell	0:f7c60d3e7b8a	2152
maclobdell	0:f7c60d3e7b8a	2153	/*
maclobdell	0:f7c60d3e7b8a	2154	* Verify the certificate validity, with profile
maclobdell	0:f7c60d3e7b8a	2155	*/
maclobdell	0:f7c60d3e7b8a	2156	int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt,
maclobdell	0:f7c60d3e7b8a	2157	mbedtls_x509_crt *trust_ca,
maclobdell	0:f7c60d3e7b8a	2158	mbedtls_x509_crl *ca_crl,
maclobdell	0:f7c60d3e7b8a	2159	const mbedtls_x509_crt_profile *profile,
maclobdell	0:f7c60d3e7b8a	2160	const char cn, uint32_t flags,
maclobdell	0:f7c60d3e7b8a	2161	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
maclobdell	0:f7c60d3e7b8a	2162	void *p_vrfy )
maclobdell	0:f7c60d3e7b8a	2163	{
maclobdell	0:f7c60d3e7b8a	2164	size_t cn_len;
maclobdell	0:f7c60d3e7b8a	2165	int ret;
maclobdell	0:f7c60d3e7b8a	2166	int pathlen = 0, selfsigned = 0;
maclobdell	0:f7c60d3e7b8a	2167	mbedtls_x509_crt *parent;
maclobdell	0:f7c60d3e7b8a	2168	mbedtls_x509_name *name;
maclobdell	0:f7c60d3e7b8a	2169	mbedtls_x509_sequence *cur = NULL;
maclobdell	0:f7c60d3e7b8a	2170	mbedtls_pk_type_t pk_type;
maclobdell	0:f7c60d3e7b8a	2171
maclobdell	0:f7c60d3e7b8a	2172	if( profile == NULL )
maclobdell	0:f7c60d3e7b8a	2173	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
maclobdell	0:f7c60d3e7b8a	2174
maclobdell	0:f7c60d3e7b8a	2175	*flags = 0;
maclobdell	0:f7c60d3e7b8a	2176
maclobdell	0:f7c60d3e7b8a	2177	if( cn != NULL )
maclobdell	0:f7c60d3e7b8a	2178	{
maclobdell	0:f7c60d3e7b8a	2179	name = &crt->subject;
maclobdell	0:f7c60d3e7b8a	2180	cn_len = strlen( cn );
maclobdell	0:f7c60d3e7b8a	2181
maclobdell	0:f7c60d3e7b8a	2182	if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
maclobdell	0:f7c60d3e7b8a	2183	{
maclobdell	0:f7c60d3e7b8a	2184	cur = &crt->subject_alt_names;
maclobdell	0:f7c60d3e7b8a	2185
maclobdell	0:f7c60d3e7b8a	2186	while( cur != NULL )
maclobdell	0:f7c60d3e7b8a	2187	{
maclobdell	0:f7c60d3e7b8a	2188	if( cur->buf.len == cn_len &&
maclobdell	0:f7c60d3e7b8a	2189	x509_memcasecmp( cn, cur->buf.p, cn_len ) == 0 )
maclobdell	0:f7c60d3e7b8a	2190	break;
maclobdell	0:f7c60d3e7b8a	2191
maclobdell	0:f7c60d3e7b8a	2192	if( cur->buf.len > 2 &&
maclobdell	0:f7c60d3e7b8a	2193	memcmp( cur->buf.p, "*.", 2 ) == 0 &&
maclobdell	0:f7c60d3e7b8a	2194	x509_check_wildcard( cn, &cur->buf ) == 0 )
maclobdell	0:f7c60d3e7b8a	2195	{
maclobdell	0:f7c60d3e7b8a	2196	break;
maclobdell	0:f7c60d3e7b8a	2197	}
maclobdell	0:f7c60d3e7b8a	2198
maclobdell	0:f7c60d3e7b8a	2199	cur = cur->next;
maclobdell	0:f7c60d3e7b8a	2200	}
maclobdell	0:f7c60d3e7b8a	2201
maclobdell	0:f7c60d3e7b8a	2202	if( cur == NULL )
maclobdell	0:f7c60d3e7b8a	2203	*flags \|= MBEDTLS_X509_BADCERT_CN_MISMATCH;
maclobdell	0:f7c60d3e7b8a	2204	}
maclobdell	0:f7c60d3e7b8a	2205	else
maclobdell	0:f7c60d3e7b8a	2206	{
maclobdell	0:f7c60d3e7b8a	2207	while( name != NULL )
maclobdell	0:f7c60d3e7b8a	2208	{
maclobdell	0:f7c60d3e7b8a	2209	if( MBEDTLS_OID_CMP( MBEDTLS_OID_AT_CN, &name->oid ) == 0 )
maclobdell	0:f7c60d3e7b8a	2210	{
maclobdell	0:f7c60d3e7b8a	2211	if( name->val.len == cn_len &&
maclobdell	0:f7c60d3e7b8a	2212	x509_memcasecmp( name->val.p, cn, cn_len ) == 0 )
maclobdell	0:f7c60d3e7b8a	2213	break;
maclobdell	0:f7c60d3e7b8a	2214
maclobdell	0:f7c60d3e7b8a	2215	if( name->val.len > 2 &&
maclobdell	0:f7c60d3e7b8a	2216	memcmp( name->val.p, "*.", 2 ) == 0 &&
maclobdell	0:f7c60d3e7b8a	2217	x509_check_wildcard( cn, &name->val ) == 0 )
maclobdell	0:f7c60d3e7b8a	2218	break;
maclobdell	0:f7c60d3e7b8a	2219	}
maclobdell	0:f7c60d3e7b8a	2220
maclobdell	0:f7c60d3e7b8a	2221	name = name->next;
maclobdell	0:f7c60d3e7b8a	2222	}
maclobdell	0:f7c60d3e7b8a	2223
maclobdell	0:f7c60d3e7b8a	2224	if( name == NULL )
maclobdell	0:f7c60d3e7b8a	2225	*flags \|= MBEDTLS_X509_BADCERT_CN_MISMATCH;
maclobdell	0:f7c60d3e7b8a	2226	}
maclobdell	0:f7c60d3e7b8a	2227	}
maclobdell	0:f7c60d3e7b8a	2228
maclobdell	0:f7c60d3e7b8a	2229	/* Check the type and size of the key */
maclobdell	0:f7c60d3e7b8a	2230	pk_type = mbedtls_pk_get_type( &crt->pk );
maclobdell	0:f7c60d3e7b8a	2231
maclobdell	0:f7c60d3e7b8a	2232	if( x509_profile_check_pk_alg( profile, pk_type ) != 0 )
maclobdell	0:f7c60d3e7b8a	2233	*flags \|= MBEDTLS_X509_BADCERT_BAD_PK;
maclobdell	0:f7c60d3e7b8a	2234
maclobdell	0:f7c60d3e7b8a	2235	if( x509_profile_check_key( profile, pk_type, &crt->pk ) != 0 )
maclobdell	0:f7c60d3e7b8a	2236	*flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
maclobdell	0:f7c60d3e7b8a	2237
maclobdell	0:f7c60d3e7b8a	2238	/* Look for a parent in trusted CAs */
maclobdell	0:f7c60d3e7b8a	2239	for( parent = trust_ca; parent != NULL; parent = parent->next )
maclobdell	0:f7c60d3e7b8a	2240	{
maclobdell	0:f7c60d3e7b8a	2241	if( x509_crt_check_parent( crt, parent, 0, pathlen == 0 ) == 0 )
maclobdell	0:f7c60d3e7b8a	2242	break;
maclobdell	0:f7c60d3e7b8a	2243	}
maclobdell	0:f7c60d3e7b8a	2244
maclobdell	0:f7c60d3e7b8a	2245	if( parent != NULL )
maclobdell	0:f7c60d3e7b8a	2246	{
maclobdell	0:f7c60d3e7b8a	2247	ret = x509_crt_verify_top( crt, parent, ca_crl, profile,
maclobdell	0:f7c60d3e7b8a	2248	pathlen, selfsigned, flags, f_vrfy, p_vrfy );
maclobdell	0:f7c60d3e7b8a	2249	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	2250	return( ret );
maclobdell	0:f7c60d3e7b8a	2251	}
maclobdell	0:f7c60d3e7b8a	2252	else
maclobdell	0:f7c60d3e7b8a	2253	{
maclobdell	0:f7c60d3e7b8a	2254	/* Look for a parent upwards the chain */
maclobdell	0:f7c60d3e7b8a	2255	for( parent = crt->next; parent != NULL; parent = parent->next )
maclobdell	0:f7c60d3e7b8a	2256	{
maclobdell	0:f7c60d3e7b8a	2257	/* +2 because the current step is not yet accounted for
maclobdell	0:f7c60d3e7b8a	2258	* and because max_pathlen is one higher than it should be */
maclobdell	0:f7c60d3e7b8a	2259	if( parent->max_pathlen > 0 &&
maclobdell	0:f7c60d3e7b8a	2260	parent->max_pathlen < 2 + pathlen )
maclobdell	0:f7c60d3e7b8a	2261	{
maclobdell	0:f7c60d3e7b8a	2262	continue;
maclobdell	0:f7c60d3e7b8a	2263	}
maclobdell	0:f7c60d3e7b8a	2264
maclobdell	0:f7c60d3e7b8a	2265	if( x509_crt_check_parent( crt, parent, 0, pathlen == 0 ) == 0 )
maclobdell	0:f7c60d3e7b8a	2266	break;
maclobdell	0:f7c60d3e7b8a	2267	}
maclobdell	0:f7c60d3e7b8a	2268
maclobdell	0:f7c60d3e7b8a	2269	/* Are we part of the chain or at the top? */
maclobdell	0:f7c60d3e7b8a	2270	if( parent != NULL )
maclobdell	0:f7c60d3e7b8a	2271	{
maclobdell	0:f7c60d3e7b8a	2272	ret = x509_crt_verify_child( crt, parent, trust_ca, ca_crl, profile,
maclobdell	0:f7c60d3e7b8a	2273	pathlen, selfsigned, flags, f_vrfy, p_vrfy );
maclobdell	0:f7c60d3e7b8a	2274	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	2275	return( ret );
maclobdell	0:f7c60d3e7b8a	2276	}
maclobdell	0:f7c60d3e7b8a	2277	else
maclobdell	0:f7c60d3e7b8a	2278	{
maclobdell	0:f7c60d3e7b8a	2279	ret = x509_crt_verify_top( crt, trust_ca, ca_crl, profile,
maclobdell	0:f7c60d3e7b8a	2280	pathlen, selfsigned, flags, f_vrfy, p_vrfy );
maclobdell	0:f7c60d3e7b8a	2281	if( ret != 0 )
maclobdell	0:f7c60d3e7b8a	2282	return( ret );
maclobdell	0:f7c60d3e7b8a	2283	}
maclobdell	0:f7c60d3e7b8a	2284	}
maclobdell	0:f7c60d3e7b8a	2285
maclobdell	0:f7c60d3e7b8a	2286	if( *flags != 0 )
maclobdell	0:f7c60d3e7b8a	2287	return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
maclobdell	0:f7c60d3e7b8a	2288
maclobdell	0:f7c60d3e7b8a	2289	return( 0 );
maclobdell	0:f7c60d3e7b8a	2290	}
maclobdell	0:f7c60d3e7b8a	2291
maclobdell	0:f7c60d3e7b8a	2292	/*
maclobdell	0:f7c60d3e7b8a	2293	* Initialize a certificate chain
maclobdell	0:f7c60d3e7b8a	2294	*/
maclobdell	0:f7c60d3e7b8a	2295	void mbedtls_x509_crt_init( mbedtls_x509_crt *crt )
maclobdell	0:f7c60d3e7b8a	2296	{
maclobdell	0:f7c60d3e7b8a	2297	memset( crt, 0, sizeof(mbedtls_x509_crt) );
maclobdell	0:f7c60d3e7b8a	2298	}
maclobdell	0:f7c60d3e7b8a	2299
maclobdell	0:f7c60d3e7b8a	2300	/*
maclobdell	0:f7c60d3e7b8a	2301	* Unallocate all certificate data
maclobdell	0:f7c60d3e7b8a	2302	*/
maclobdell	0:f7c60d3e7b8a	2303	void mbedtls_x509_crt_free( mbedtls_x509_crt *crt )
maclobdell	0:f7c60d3e7b8a	2304	{
maclobdell	0:f7c60d3e7b8a	2305	mbedtls_x509_crt *cert_cur = crt;
maclobdell	0:f7c60d3e7b8a	2306	mbedtls_x509_crt *cert_prv;
maclobdell	0:f7c60d3e7b8a	2307	mbedtls_x509_name *name_cur;
maclobdell	0:f7c60d3e7b8a	2308	mbedtls_x509_name *name_prv;
maclobdell	0:f7c60d3e7b8a	2309	mbedtls_x509_sequence *seq_cur;
maclobdell	0:f7c60d3e7b8a	2310	mbedtls_x509_sequence *seq_prv;
maclobdell	0:f7c60d3e7b8a	2311
maclobdell	0:f7c60d3e7b8a	2312	if( crt == NULL )
maclobdell	0:f7c60d3e7b8a	2313	return;
maclobdell	0:f7c60d3e7b8a	2314
maclobdell	0:f7c60d3e7b8a	2315	do
maclobdell	0:f7c60d3e7b8a	2316	{
maclobdell	0:f7c60d3e7b8a	2317	mbedtls_pk_free( &cert_cur->pk );
maclobdell	0:f7c60d3e7b8a	2318
maclobdell	0:f7c60d3e7b8a	2319	#if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
maclobdell	0:f7c60d3e7b8a	2320	mbedtls_free( cert_cur->sig_opts );
maclobdell	0:f7c60d3e7b8a	2321	#endif
maclobdell	0:f7c60d3e7b8a	2322
maclobdell	0:f7c60d3e7b8a	2323	name_cur = cert_cur->issuer.next;
maclobdell	0:f7c60d3e7b8a	2324	while( name_cur != NULL )
maclobdell	0:f7c60d3e7b8a	2325	{
maclobdell	0:f7c60d3e7b8a	2326	name_prv = name_cur;
maclobdell	0:f7c60d3e7b8a	2327	name_cur = name_cur->next;
maclobdell	0:f7c60d3e7b8a	2328	mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
maclobdell	0:f7c60d3e7b8a	2329	mbedtls_free( name_prv );
maclobdell	0:f7c60d3e7b8a	2330	}
maclobdell	0:f7c60d3e7b8a	2331
maclobdell	0:f7c60d3e7b8a	2332	name_cur = cert_cur->subject.next;
maclobdell	0:f7c60d3e7b8a	2333	while( name_cur != NULL )
maclobdell	0:f7c60d3e7b8a	2334	{
maclobdell	0:f7c60d3e7b8a	2335	name_prv = name_cur;
maclobdell	0:f7c60d3e7b8a	2336	name_cur = name_cur->next;
maclobdell	0:f7c60d3e7b8a	2337	mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
maclobdell	0:f7c60d3e7b8a	2338	mbedtls_free( name_prv );
maclobdell	0:f7c60d3e7b8a	2339	}
maclobdell	0:f7c60d3e7b8a	2340
maclobdell	0:f7c60d3e7b8a	2341	seq_cur = cert_cur->ext_key_usage.next;
maclobdell	0:f7c60d3e7b8a	2342	while( seq_cur != NULL )
maclobdell	0:f7c60d3e7b8a	2343	{
maclobdell	0:f7c60d3e7b8a	2344	seq_prv = seq_cur;
maclobdell	0:f7c60d3e7b8a	2345	seq_cur = seq_cur->next;
maclobdell	0:f7c60d3e7b8a	2346	mbedtls_zeroize( seq_prv, sizeof( mbedtls_x509_sequence ) );
maclobdell	0:f7c60d3e7b8a	2347	mbedtls_free( seq_prv );
maclobdell	0:f7c60d3e7b8a	2348	}
maclobdell	0:f7c60d3e7b8a	2349
maclobdell	0:f7c60d3e7b8a	2350	seq_cur = cert_cur->subject_alt_names.next;
maclobdell	0:f7c60d3e7b8a	2351	while( seq_cur != NULL )
maclobdell	0:f7c60d3e7b8a	2352	{
maclobdell	0:f7c60d3e7b8a	2353	seq_prv = seq_cur;
maclobdell	0:f7c60d3e7b8a	2354	seq_cur = seq_cur->next;
maclobdell	0:f7c60d3e7b8a	2355	mbedtls_zeroize( seq_prv, sizeof( mbedtls_x509_sequence ) );
maclobdell	0:f7c60d3e7b8a	2356	mbedtls_free( seq_prv );
maclobdell	0:f7c60d3e7b8a	2357	}
maclobdell	0:f7c60d3e7b8a	2358
maclobdell	0:f7c60d3e7b8a	2359	if( cert_cur->raw.p != NULL )
maclobdell	0:f7c60d3e7b8a	2360	{
maclobdell	0:f7c60d3e7b8a	2361	mbedtls_zeroize( cert_cur->raw.p, cert_cur->raw.len );
maclobdell	0:f7c60d3e7b8a	2362	mbedtls_free( cert_cur->raw.p );
maclobdell	0:f7c60d3e7b8a	2363	}
maclobdell	0:f7c60d3e7b8a	2364
maclobdell	0:f7c60d3e7b8a	2365	cert_cur = cert_cur->next;
maclobdell	0:f7c60d3e7b8a	2366	}
maclobdell	0:f7c60d3e7b8a	2367	while( cert_cur != NULL );
maclobdell	0:f7c60d3e7b8a	2368
maclobdell	0:f7c60d3e7b8a	2369	cert_cur = crt;
maclobdell	0:f7c60d3e7b8a	2370	do
maclobdell	0:f7c60d3e7b8a	2371	{
maclobdell	0:f7c60d3e7b8a	2372	cert_prv = cert_cur;
maclobdell	0:f7c60d3e7b8a	2373	cert_cur = cert_cur->next;
maclobdell	0:f7c60d3e7b8a	2374
maclobdell	0:f7c60d3e7b8a	2375	mbedtls_zeroize( cert_prv, sizeof( mbedtls_x509_crt ) );
maclobdell	0:f7c60d3e7b8a	2376	if( cert_prv != crt )
maclobdell	0:f7c60d3e7b8a	2377	mbedtls_free( cert_prv );
maclobdell	0:f7c60d3e7b8a	2378	}
maclobdell	0:f7c60d3e7b8a	2379	while( cert_cur != NULL );
maclobdell	0:f7c60d3e7b8a	2380	}
maclobdell	0:f7c60d3e7b8a	2381
maclobdell	0:f7c60d3e7b8a	2382	#endif /* MBEDTLS_X509_CRT_PARSE_C */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	19 May 2016
Imports:	0
Forks:	0
Commits:	2
Dependents:	0
Dependencies:	5
Followers:	1

mbed-client/mbedtls/source/x509_crt.c@0:f7c60d3e7b8a, 2016-05-18 (annotated)

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