mbed-os_TYBLE16 - mbed-os5 only for TYBLE16

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mbed-os5 only for TYBLE16

Dependents: TYBLE16_simple_data_logger TYBLE16_MP3_Air

features/mbedtls/src/x509_crt.c@0:5b88d5760320, 2019-12-17 (annotated)

Committer:: kenjiArai
Date:: Tue Dec 17 23:23:45 2019 +0000
Revision:: 0:5b88d5760320
Child:: 1:9db0e321a9f4

mbed-os5 only for TYBLE16

Who changed what in which revision?

User	Revision	Line number	New contents of line
kenjiArai	0:5b88d5760320	1	/*
kenjiArai	0:5b88d5760320	2	* X.509 certificate parsing and verification
kenjiArai	0:5b88d5760320	3	*
kenjiArai	0:5b88d5760320	4	* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
kenjiArai	0:5b88d5760320	5	* SPDX-License-Identifier: Apache-2.0
kenjiArai	0:5b88d5760320	6	*
kenjiArai	0:5b88d5760320	7	* Licensed under the Apache License, Version 2.0 (the "License"); you may
kenjiArai	0:5b88d5760320	8	* not use this file except in compliance with the License.
kenjiArai	0:5b88d5760320	9	* You may obtain a copy of the License at
kenjiArai	0:5b88d5760320	10	*
kenjiArai	0:5b88d5760320	11	* http://www.apache.org/licenses/LICENSE-2.0
kenjiArai	0:5b88d5760320	12	*
kenjiArai	0:5b88d5760320	13	* Unless required by applicable law or agreed to in writing, software
kenjiArai	0:5b88d5760320	14	* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
kenjiArai	0:5b88d5760320	15	* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kenjiArai	0:5b88d5760320	16	* See the License for the specific language governing permissions and
kenjiArai	0:5b88d5760320	17	* limitations under the License.
kenjiArai	0:5b88d5760320	18	*
kenjiArai	0:5b88d5760320	19	* This file is part of mbed TLS (https://tls.mbed.org)
kenjiArai	0:5b88d5760320	20	*/
kenjiArai	0:5b88d5760320	21	/*
kenjiArai	0:5b88d5760320	22	* The ITU-T X.509 standard defines a certificate format for PKI.
kenjiArai	0:5b88d5760320	23	*
kenjiArai	0:5b88d5760320	24	* http://www.ietf.org/rfc/rfc5280.txt (Certificates and CRLs)
kenjiArai	0:5b88d5760320	25	* http://www.ietf.org/rfc/rfc3279.txt (Alg IDs for CRLs)
kenjiArai	0:5b88d5760320	26	* http://www.ietf.org/rfc/rfc2986.txt (CSRs, aka PKCS#10)
kenjiArai	0:5b88d5760320	27	*
kenjiArai	0:5b88d5760320	28	* http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
kenjiArai	0:5b88d5760320	29	* http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
kenjiArai	0:5b88d5760320	30	*
kenjiArai	0:5b88d5760320	31	* [SIRO] https://cabforum.org/wp-content/uploads/Chunghwatelecom201503cabforumV4.pdf
kenjiArai	0:5b88d5760320	32	*/
kenjiArai	0:5b88d5760320	33
kenjiArai	0:5b88d5760320	34	#if !defined(MBEDTLS_CONFIG_FILE)
kenjiArai	0:5b88d5760320	35	#include "mbedtls/config.h"
kenjiArai	0:5b88d5760320	36	#else
kenjiArai	0:5b88d5760320	37	#include MBEDTLS_CONFIG_FILE
kenjiArai	0:5b88d5760320	38	#endif
kenjiArai	0:5b88d5760320	39
kenjiArai	0:5b88d5760320	40	#if defined(MBEDTLS_X509_CRT_PARSE_C)
kenjiArai	0:5b88d5760320	41
kenjiArai	0:5b88d5760320	42	#include "mbedtls/x509_crt.h"
kenjiArai	0:5b88d5760320	43	#include "mbedtls/oid.h"
kenjiArai	0:5b88d5760320	44	#include "mbedtls/platform_util.h"
kenjiArai	0:5b88d5760320	45
kenjiArai	0:5b88d5760320	46	#include <string.h>
kenjiArai	0:5b88d5760320	47
kenjiArai	0:5b88d5760320	48	#if defined(MBEDTLS_PEM_PARSE_C)
kenjiArai	0:5b88d5760320	49	#include "mbedtls/pem.h"
kenjiArai	0:5b88d5760320	50	#endif
kenjiArai	0:5b88d5760320	51
kenjiArai	0:5b88d5760320	52	#if defined(MBEDTLS_USE_PSA_CRYPTO)
kenjiArai	0:5b88d5760320	53	#include "psa/crypto.h"
kenjiArai	0:5b88d5760320	54	#include "mbedtls/psa_util.h"
kenjiArai	0:5b88d5760320	55	#endif
kenjiArai	0:5b88d5760320	56
kenjiArai	0:5b88d5760320	57	#if defined(MBEDTLS_PLATFORM_C)
kenjiArai	0:5b88d5760320	58	#include "mbedtls/platform.h"
kenjiArai	0:5b88d5760320	59	#else
kenjiArai	0:5b88d5760320	60	#include <stdio.h>
kenjiArai	0:5b88d5760320	61	#include <stdlib.h>
kenjiArai	0:5b88d5760320	62	#define mbedtls_free free
kenjiArai	0:5b88d5760320	63	#define mbedtls_calloc calloc
kenjiArai	0:5b88d5760320	64	#define mbedtls_snprintf snprintf
kenjiArai	0:5b88d5760320	65	#endif
kenjiArai	0:5b88d5760320	66
kenjiArai	0:5b88d5760320	67	#if defined(MBEDTLS_THREADING_C)
kenjiArai	0:5b88d5760320	68	#include "mbedtls/threading.h"
kenjiArai	0:5b88d5760320	69	#endif
kenjiArai	0:5b88d5760320	70
kenjiArai	0:5b88d5760320	71	#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
kenjiArai	0:5b88d5760320	72	#include <windows.h>
kenjiArai	0:5b88d5760320	73	#else
kenjiArai	0:5b88d5760320	74	#include <time.h>
kenjiArai	0:5b88d5760320	75	#endif
kenjiArai	0:5b88d5760320	76
kenjiArai	0:5b88d5760320	77	#if defined(MBEDTLS_FS_IO)
kenjiArai	0:5b88d5760320	78	#include <stdio.h>
kenjiArai	0:5b88d5760320	79	#if !defined(_WIN32) \|\| defined(EFIX64) \|\| defined(EFI32)
kenjiArai	0:5b88d5760320	80	#include <sys/types.h>
kenjiArai	0:5b88d5760320	81	#include <sys/stat.h>
kenjiArai	0:5b88d5760320	82	#include <dirent.h>
kenjiArai	0:5b88d5760320	83	#endif /* !_WIN32 \|\| EFIX64 \|\| EFI32 */
kenjiArai	0:5b88d5760320	84	#endif
kenjiArai	0:5b88d5760320	85
kenjiArai	0:5b88d5760320	86	/*
kenjiArai	0:5b88d5760320	87	* Item in a verification chain: cert and flags for it
kenjiArai	0:5b88d5760320	88	*/
kenjiArai	0:5b88d5760320	89	typedef struct {
kenjiArai	0:5b88d5760320	90	mbedtls_x509_crt *crt;
kenjiArai	0:5b88d5760320	91	uint32_t flags;
kenjiArai	0:5b88d5760320	92	} x509_crt_verify_chain_item;
kenjiArai	0:5b88d5760320	93
kenjiArai	0:5b88d5760320	94	/*
kenjiArai	0:5b88d5760320	95	* Max size of verification chain: end-entity + intermediates + trusted root
kenjiArai	0:5b88d5760320	96	*/
kenjiArai	0:5b88d5760320	97	#define X509_MAX_VERIFY_CHAIN_SIZE ( MBEDTLS_X509_MAX_INTERMEDIATE_CA + 2 )
kenjiArai	0:5b88d5760320	98
kenjiArai	0:5b88d5760320	99	/*
kenjiArai	0:5b88d5760320	100	* Default profile
kenjiArai	0:5b88d5760320	101	*/
kenjiArai	0:5b88d5760320	102	const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_default =
kenjiArai	0:5b88d5760320	103	{
kenjiArai	0:5b88d5760320	104	#if defined(MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES)
kenjiArai	0:5b88d5760320	105	/* Allow SHA-1 (weak, but still safe in controlled environments) */
kenjiArai	0:5b88d5760320	106	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 ) \|
kenjiArai	0:5b88d5760320	107	#endif
kenjiArai	0:5b88d5760320	108	/* Only SHA-2 hashes */
kenjiArai	0:5b88d5760320	109	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) \|
kenjiArai	0:5b88d5760320	110	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) \|
kenjiArai	0:5b88d5760320	111	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) \|
kenjiArai	0:5b88d5760320	112	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
kenjiArai	0:5b88d5760320	113	0xFFFFFFF, /* Any PK alg */
kenjiArai	0:5b88d5760320	114	0xFFFFFFF, /* Any curve */
kenjiArai	0:5b88d5760320	115	2048,
kenjiArai	0:5b88d5760320	116	};
kenjiArai	0:5b88d5760320	117
kenjiArai	0:5b88d5760320	118	/*
kenjiArai	0:5b88d5760320	119	* Next-default profile
kenjiArai	0:5b88d5760320	120	*/
kenjiArai	0:5b88d5760320	121	const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_next =
kenjiArai	0:5b88d5760320	122	{
kenjiArai	0:5b88d5760320	123	/* Hashes from SHA-256 and above */
kenjiArai	0:5b88d5760320	124	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) \|
kenjiArai	0:5b88d5760320	125	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) \|
kenjiArai	0:5b88d5760320	126	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
kenjiArai	0:5b88d5760320	127	0xFFFFFFF, /* Any PK alg */
kenjiArai	0:5b88d5760320	128	#if defined(MBEDTLS_ECP_C)
kenjiArai	0:5b88d5760320	129	/* Curves at or above 128-bit security level */
kenjiArai	0:5b88d5760320	130	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) \|
kenjiArai	0:5b88d5760320	131	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ) \|
kenjiArai	0:5b88d5760320	132	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP521R1 ) \|
kenjiArai	0:5b88d5760320	133	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP256R1 ) \|
kenjiArai	0:5b88d5760320	134	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP384R1 ) \|
kenjiArai	0:5b88d5760320	135	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP512R1 ) \|
kenjiArai	0:5b88d5760320	136	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256K1 ),
kenjiArai	0:5b88d5760320	137	#else
kenjiArai	0:5b88d5760320	138	0,
kenjiArai	0:5b88d5760320	139	#endif
kenjiArai	0:5b88d5760320	140	2048,
kenjiArai	0:5b88d5760320	141	};
kenjiArai	0:5b88d5760320	142
kenjiArai	0:5b88d5760320	143	/*
kenjiArai	0:5b88d5760320	144	* NSA Suite B Profile
kenjiArai	0:5b88d5760320	145	*/
kenjiArai	0:5b88d5760320	146	const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_suiteb =
kenjiArai	0:5b88d5760320	147	{
kenjiArai	0:5b88d5760320	148	/* Only SHA-256 and 384 */
kenjiArai	0:5b88d5760320	149	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) \|
kenjiArai	0:5b88d5760320	150	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ),
kenjiArai	0:5b88d5760320	151	/* Only ECDSA */
kenjiArai	0:5b88d5760320	152	MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_ECDSA ) \|
kenjiArai	0:5b88d5760320	153	MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_ECKEY ),
kenjiArai	0:5b88d5760320	154	#if defined(MBEDTLS_ECP_C)
kenjiArai	0:5b88d5760320	155	/* Only NIST P-256 and P-384 */
kenjiArai	0:5b88d5760320	156	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) \|
kenjiArai	0:5b88d5760320	157	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ),
kenjiArai	0:5b88d5760320	158	#else
kenjiArai	0:5b88d5760320	159	0,
kenjiArai	0:5b88d5760320	160	#endif
kenjiArai	0:5b88d5760320	161	0,
kenjiArai	0:5b88d5760320	162	};
kenjiArai	0:5b88d5760320	163
kenjiArai	0:5b88d5760320	164	/*
kenjiArai	0:5b88d5760320	165	* Check md_alg against profile
kenjiArai	0:5b88d5760320	166	* Return 0 if md_alg is acceptable for this profile, -1 otherwise
kenjiArai	0:5b88d5760320	167	*/
kenjiArai	0:5b88d5760320	168	static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile,
kenjiArai	0:5b88d5760320	169	mbedtls_md_type_t md_alg )
kenjiArai	0:5b88d5760320	170	{
kenjiArai	0:5b88d5760320	171	if( md_alg == MBEDTLS_MD_NONE )
kenjiArai	0:5b88d5760320	172	return( -1 );
kenjiArai	0:5b88d5760320	173
kenjiArai	0:5b88d5760320	174	if( ( profile->allowed_mds & MBEDTLS_X509_ID_FLAG( md_alg ) ) != 0 )
kenjiArai	0:5b88d5760320	175	return( 0 );
kenjiArai	0:5b88d5760320	176
kenjiArai	0:5b88d5760320	177	return( -1 );
kenjiArai	0:5b88d5760320	178	}
kenjiArai	0:5b88d5760320	179
kenjiArai	0:5b88d5760320	180	/*
kenjiArai	0:5b88d5760320	181	* Check pk_alg against profile
kenjiArai	0:5b88d5760320	182	* Return 0 if pk_alg is acceptable for this profile, -1 otherwise
kenjiArai	0:5b88d5760320	183	*/
kenjiArai	0:5b88d5760320	184	static int x509_profile_check_pk_alg( const mbedtls_x509_crt_profile *profile,
kenjiArai	0:5b88d5760320	185	mbedtls_pk_type_t pk_alg )
kenjiArai	0:5b88d5760320	186	{
kenjiArai	0:5b88d5760320	187	if( pk_alg == MBEDTLS_PK_NONE )
kenjiArai	0:5b88d5760320	188	return( -1 );
kenjiArai	0:5b88d5760320	189
kenjiArai	0:5b88d5760320	190	if( ( profile->allowed_pks & MBEDTLS_X509_ID_FLAG( pk_alg ) ) != 0 )
kenjiArai	0:5b88d5760320	191	return( 0 );
kenjiArai	0:5b88d5760320	192
kenjiArai	0:5b88d5760320	193	return( -1 );
kenjiArai	0:5b88d5760320	194	}
kenjiArai	0:5b88d5760320	195
kenjiArai	0:5b88d5760320	196	/*
kenjiArai	0:5b88d5760320	197	* Check key against profile
kenjiArai	0:5b88d5760320	198	* Return 0 if pk is acceptable for this profile, -1 otherwise
kenjiArai	0:5b88d5760320	199	*/
kenjiArai	0:5b88d5760320	200	static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile,
kenjiArai	0:5b88d5760320	201	const mbedtls_pk_context *pk )
kenjiArai	0:5b88d5760320	202	{
kenjiArai	0:5b88d5760320	203	const mbedtls_pk_type_t pk_alg = mbedtls_pk_get_type( pk );
kenjiArai	0:5b88d5760320	204
kenjiArai	0:5b88d5760320	205	#if defined(MBEDTLS_RSA_C)
kenjiArai	0:5b88d5760320	206	if( pk_alg == MBEDTLS_PK_RSA \|\| pk_alg == MBEDTLS_PK_RSASSA_PSS )
kenjiArai	0:5b88d5760320	207	{
kenjiArai	0:5b88d5760320	208	if( mbedtls_pk_get_bitlen( pk ) >= profile->rsa_min_bitlen )
kenjiArai	0:5b88d5760320	209	return( 0 );
kenjiArai	0:5b88d5760320	210
kenjiArai	0:5b88d5760320	211	return( -1 );
kenjiArai	0:5b88d5760320	212	}
kenjiArai	0:5b88d5760320	213	#endif
kenjiArai	0:5b88d5760320	214
kenjiArai	0:5b88d5760320	215	#if defined(MBEDTLS_ECP_C)
kenjiArai	0:5b88d5760320	216	if( pk_alg == MBEDTLS_PK_ECDSA \|\|
kenjiArai	0:5b88d5760320	217	pk_alg == MBEDTLS_PK_ECKEY \|\|
kenjiArai	0:5b88d5760320	218	pk_alg == MBEDTLS_PK_ECKEY_DH )
kenjiArai	0:5b88d5760320	219	{
kenjiArai	0:5b88d5760320	220	const mbedtls_ecp_group_id gid = mbedtls_pk_ec( *pk )->grp.id;
kenjiArai	0:5b88d5760320	221
kenjiArai	0:5b88d5760320	222	if( gid == MBEDTLS_ECP_DP_NONE )
kenjiArai	0:5b88d5760320	223	return( -1 );
kenjiArai	0:5b88d5760320	224
kenjiArai	0:5b88d5760320	225	if( ( profile->allowed_curves & MBEDTLS_X509_ID_FLAG( gid ) ) != 0 )
kenjiArai	0:5b88d5760320	226	return( 0 );
kenjiArai	0:5b88d5760320	227
kenjiArai	0:5b88d5760320	228	return( -1 );
kenjiArai	0:5b88d5760320	229	}
kenjiArai	0:5b88d5760320	230	#endif
kenjiArai	0:5b88d5760320	231
kenjiArai	0:5b88d5760320	232	return( -1 );
kenjiArai	0:5b88d5760320	233	}
kenjiArai	0:5b88d5760320	234
kenjiArai	0:5b88d5760320	235	/*
kenjiArai	0:5b88d5760320	236	* Like memcmp, but case-insensitive and always returns -1 if different
kenjiArai	0:5b88d5760320	237	*/
kenjiArai	0:5b88d5760320	238	static int x509_memcasecmp( const void s1, const void s2, size_t len )
kenjiArai	0:5b88d5760320	239	{
kenjiArai	0:5b88d5760320	240	size_t i;
kenjiArai	0:5b88d5760320	241	unsigned char diff;
kenjiArai	0:5b88d5760320	242	const unsigned char n1 = s1, n2 = s2;
kenjiArai	0:5b88d5760320	243
kenjiArai	0:5b88d5760320	244	for( i = 0; i < len; i++ )
kenjiArai	0:5b88d5760320	245	{
kenjiArai	0:5b88d5760320	246	diff = n1[i] ^ n2[i];
kenjiArai	0:5b88d5760320	247
kenjiArai	0:5b88d5760320	248	if( diff == 0 )
kenjiArai	0:5b88d5760320	249	continue;
kenjiArai	0:5b88d5760320	250
kenjiArai	0:5b88d5760320	251	if( diff == 32 &&
kenjiArai	0:5b88d5760320	252	( ( n1[i] >= 'a' && n1[i] <= 'z' ) \|\|
kenjiArai	0:5b88d5760320	253	( n1[i] >= 'A' && n1[i] <= 'Z' ) ) )
kenjiArai	0:5b88d5760320	254	{
kenjiArai	0:5b88d5760320	255	continue;
kenjiArai	0:5b88d5760320	256	}
kenjiArai	0:5b88d5760320	257
kenjiArai	0:5b88d5760320	258	return( -1 );
kenjiArai	0:5b88d5760320	259	}
kenjiArai	0:5b88d5760320	260
kenjiArai	0:5b88d5760320	261	return( 0 );
kenjiArai	0:5b88d5760320	262	}
kenjiArai	0:5b88d5760320	263
kenjiArai	0:5b88d5760320	264	/*
kenjiArai	0:5b88d5760320	265	* Return 0 if name matches wildcard, -1 otherwise
kenjiArai	0:5b88d5760320	266	*/
kenjiArai	0:5b88d5760320	267	static int x509_check_wildcard( const char cn, const mbedtls_x509_buf name )
kenjiArai	0:5b88d5760320	268	{
kenjiArai	0:5b88d5760320	269	size_t i;
kenjiArai	0:5b88d5760320	270	size_t cn_idx = 0, cn_len = strlen( cn );
kenjiArai	0:5b88d5760320	271
kenjiArai	0:5b88d5760320	272	/* We can't have a match if there is no wildcard to match */
kenjiArai	0:5b88d5760320	273	if( name->len < 3 \|\| name->p[0] != '*' \|\| name->p[1] != '.' )
kenjiArai	0:5b88d5760320	274	return( -1 );
kenjiArai	0:5b88d5760320	275
kenjiArai	0:5b88d5760320	276	for( i = 0; i < cn_len; ++i )
kenjiArai	0:5b88d5760320	277	{
kenjiArai	0:5b88d5760320	278	if( cn[i] == '.' )
kenjiArai	0:5b88d5760320	279	{
kenjiArai	0:5b88d5760320	280	cn_idx = i;
kenjiArai	0:5b88d5760320	281	break;
kenjiArai	0:5b88d5760320	282	}
kenjiArai	0:5b88d5760320	283	}
kenjiArai	0:5b88d5760320	284
kenjiArai	0:5b88d5760320	285	if( cn_idx == 0 )
kenjiArai	0:5b88d5760320	286	return( -1 );
kenjiArai	0:5b88d5760320	287
kenjiArai	0:5b88d5760320	288	if( cn_len - cn_idx == name->len - 1 &&
kenjiArai	0:5b88d5760320	289	x509_memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 )
kenjiArai	0:5b88d5760320	290	{
kenjiArai	0:5b88d5760320	291	return( 0 );
kenjiArai	0:5b88d5760320	292	}
kenjiArai	0:5b88d5760320	293
kenjiArai	0:5b88d5760320	294	return( -1 );
kenjiArai	0:5b88d5760320	295	}
kenjiArai	0:5b88d5760320	296
kenjiArai	0:5b88d5760320	297	/*
kenjiArai	0:5b88d5760320	298	* Compare two X.509 strings, case-insensitive, and allowing for some encoding
kenjiArai	0:5b88d5760320	299	* variations (but not all).
kenjiArai	0:5b88d5760320	300	*
kenjiArai	0:5b88d5760320	301	* Return 0 if equal, -1 otherwise.
kenjiArai	0:5b88d5760320	302	*/
kenjiArai	0:5b88d5760320	303	static int x509_string_cmp( const mbedtls_x509_buf a, const mbedtls_x509_buf b )
kenjiArai	0:5b88d5760320	304	{
kenjiArai	0:5b88d5760320	305	if( a->tag == b->tag &&
kenjiArai	0:5b88d5760320	306	a->len == b->len &&
kenjiArai	0:5b88d5760320	307	memcmp( a->p, b->p, b->len ) == 0 )
kenjiArai	0:5b88d5760320	308	{
kenjiArai	0:5b88d5760320	309	return( 0 );
kenjiArai	0:5b88d5760320	310	}
kenjiArai	0:5b88d5760320	311
kenjiArai	0:5b88d5760320	312	if( ( a->tag == MBEDTLS_ASN1_UTF8_STRING \|\| a->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
kenjiArai	0:5b88d5760320	313	( b->tag == MBEDTLS_ASN1_UTF8_STRING \|\| b->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
kenjiArai	0:5b88d5760320	314	a->len == b->len &&
kenjiArai	0:5b88d5760320	315	x509_memcasecmp( a->p, b->p, b->len ) == 0 )
kenjiArai	0:5b88d5760320	316	{
kenjiArai	0:5b88d5760320	317	return( 0 );
kenjiArai	0:5b88d5760320	318	}
kenjiArai	0:5b88d5760320	319
kenjiArai	0:5b88d5760320	320	return( -1 );
kenjiArai	0:5b88d5760320	321	}
kenjiArai	0:5b88d5760320	322
kenjiArai	0:5b88d5760320	323	/*
kenjiArai	0:5b88d5760320	324	* Compare two X.509 Names (aka rdnSequence).
kenjiArai	0:5b88d5760320	325	*
kenjiArai	0:5b88d5760320	326	* See RFC 5280 section 7.1, though we don't implement the whole algorithm:
kenjiArai	0:5b88d5760320	327	* we sometimes return unequal when the full algorithm would return equal,
kenjiArai	0:5b88d5760320	328	* but never the other way. (In particular, we don't do Unicode normalisation
kenjiArai	0:5b88d5760320	329	* or space folding.)
kenjiArai	0:5b88d5760320	330	*
kenjiArai	0:5b88d5760320	331	* Return 0 if equal, -1 otherwise.
kenjiArai	0:5b88d5760320	332	*/
kenjiArai	0:5b88d5760320	333	static int x509_name_cmp( const mbedtls_x509_name a, const mbedtls_x509_name b )
kenjiArai	0:5b88d5760320	334	{
kenjiArai	0:5b88d5760320	335	/* Avoid recursion, it might not be optimised by the compiler */
kenjiArai	0:5b88d5760320	336	while( a != NULL \|\| b != NULL )
kenjiArai	0:5b88d5760320	337	{
kenjiArai	0:5b88d5760320	338	if( a == NULL \|\| b == NULL )
kenjiArai	0:5b88d5760320	339	return( -1 );
kenjiArai	0:5b88d5760320	340
kenjiArai	0:5b88d5760320	341	/* type */
kenjiArai	0:5b88d5760320	342	if( a->oid.tag != b->oid.tag \|\|
kenjiArai	0:5b88d5760320	343	a->oid.len != b->oid.len \|\|
kenjiArai	0:5b88d5760320	344	memcmp( a->oid.p, b->oid.p, b->oid.len ) != 0 )
kenjiArai	0:5b88d5760320	345	{
kenjiArai	0:5b88d5760320	346	return( -1 );
kenjiArai	0:5b88d5760320	347	}
kenjiArai	0:5b88d5760320	348
kenjiArai	0:5b88d5760320	349	/* value */
kenjiArai	0:5b88d5760320	350	if( x509_string_cmp( &a->val, &b->val ) != 0 )
kenjiArai	0:5b88d5760320	351	return( -1 );
kenjiArai	0:5b88d5760320	352
kenjiArai	0:5b88d5760320	353	/* structure of the list of sets */
kenjiArai	0:5b88d5760320	354	if( a->next_merged != b->next_merged )
kenjiArai	0:5b88d5760320	355	return( -1 );
kenjiArai	0:5b88d5760320	356
kenjiArai	0:5b88d5760320	357	a = a->next;
kenjiArai	0:5b88d5760320	358	b = b->next;
kenjiArai	0:5b88d5760320	359	}
kenjiArai	0:5b88d5760320	360
kenjiArai	0:5b88d5760320	361	/* a == NULL == b */
kenjiArai	0:5b88d5760320	362	return( 0 );
kenjiArai	0:5b88d5760320	363	}
kenjiArai	0:5b88d5760320	364
kenjiArai	0:5b88d5760320	365	/*
kenjiArai	0:5b88d5760320	366	* Reset (init or clear) a verify_chain
kenjiArai	0:5b88d5760320	367	*/
kenjiArai	0:5b88d5760320	368	static void x509_crt_verify_chain_reset(
kenjiArai	0:5b88d5760320	369	mbedtls_x509_crt_verify_chain *ver_chain )
kenjiArai	0:5b88d5760320	370	{
kenjiArai	0:5b88d5760320	371	size_t i;
kenjiArai	0:5b88d5760320	372
kenjiArai	0:5b88d5760320	373	for( i = 0; i < MBEDTLS_X509_MAX_VERIFY_CHAIN_SIZE; i++ )
kenjiArai	0:5b88d5760320	374	{
kenjiArai	0:5b88d5760320	375	ver_chain->items[i].crt = NULL;
kenjiArai	0:5b88d5760320	376	ver_chain->items[i].flags = (uint32_t) -1;
kenjiArai	0:5b88d5760320	377	}
kenjiArai	0:5b88d5760320	378
kenjiArai	0:5b88d5760320	379	ver_chain->len = 0;
kenjiArai	0:5b88d5760320	380
kenjiArai	0:5b88d5760320	381	#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
kenjiArai	0:5b88d5760320	382	ver_chain->trust_ca_cb_result = NULL;
kenjiArai	0:5b88d5760320	383	#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
kenjiArai	0:5b88d5760320	384	}
kenjiArai	0:5b88d5760320	385
kenjiArai	0:5b88d5760320	386	/*
kenjiArai	0:5b88d5760320	387	* Version ::= INTEGER { v1(0), v2(1), v3(2) }
kenjiArai	0:5b88d5760320	388	*/
kenjiArai	0:5b88d5760320	389	static int x509_get_version( unsigned char **p,
kenjiArai	0:5b88d5760320	390	const unsigned char *end,
kenjiArai	0:5b88d5760320	391	int *ver )
kenjiArai	0:5b88d5760320	392	{
kenjiArai	0:5b88d5760320	393	int ret;
kenjiArai	0:5b88d5760320	394	size_t len;
kenjiArai	0:5b88d5760320	395
kenjiArai	0:5b88d5760320	396	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
kenjiArai	0:5b88d5760320	397	MBEDTLS_ASN1_CONTEXT_SPECIFIC \| MBEDTLS_ASN1_CONSTRUCTED \| 0 ) ) != 0 )
kenjiArai	0:5b88d5760320	398	{
kenjiArai	0:5b88d5760320	399	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
kenjiArai	0:5b88d5760320	400	{
kenjiArai	0:5b88d5760320	401	*ver = 0;
kenjiArai	0:5b88d5760320	402	return( 0 );
kenjiArai	0:5b88d5760320	403	}
kenjiArai	0:5b88d5760320	404
kenjiArai	0:5b88d5760320	405	return( ret );
kenjiArai	0:5b88d5760320	406	}
kenjiArai	0:5b88d5760320	407
kenjiArai	0:5b88d5760320	408	end = *p + len;
kenjiArai	0:5b88d5760320	409
kenjiArai	0:5b88d5760320	410	if( ( ret = mbedtls_asn1_get_int( p, end, ver ) ) != 0 )
kenjiArai	0:5b88d5760320	411	return( MBEDTLS_ERR_X509_INVALID_VERSION + ret );
kenjiArai	0:5b88d5760320	412
kenjiArai	0:5b88d5760320	413	if( *p != end )
kenjiArai	0:5b88d5760320	414	return( MBEDTLS_ERR_X509_INVALID_VERSION +
kenjiArai	0:5b88d5760320	415	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	416
kenjiArai	0:5b88d5760320	417	return( 0 );
kenjiArai	0:5b88d5760320	418	}
kenjiArai	0:5b88d5760320	419
kenjiArai	0:5b88d5760320	420	/*
kenjiArai	0:5b88d5760320	421	* Validity ::= SEQUENCE {
kenjiArai	0:5b88d5760320	422	* notBefore Time,
kenjiArai	0:5b88d5760320	423	* notAfter Time }
kenjiArai	0:5b88d5760320	424	*/
kenjiArai	0:5b88d5760320	425	static int x509_get_dates( unsigned char **p,
kenjiArai	0:5b88d5760320	426	const unsigned char *end,
kenjiArai	0:5b88d5760320	427	mbedtls_x509_time *from,
kenjiArai	0:5b88d5760320	428	mbedtls_x509_time *to )
kenjiArai	0:5b88d5760320	429	{
kenjiArai	0:5b88d5760320	430	int ret;
kenjiArai	0:5b88d5760320	431	size_t len;
kenjiArai	0:5b88d5760320	432
kenjiArai	0:5b88d5760320	433	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
kenjiArai	0:5b88d5760320	434	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	435	return( MBEDTLS_ERR_X509_INVALID_DATE + ret );
kenjiArai	0:5b88d5760320	436
kenjiArai	0:5b88d5760320	437	end = *p + len;
kenjiArai	0:5b88d5760320	438
kenjiArai	0:5b88d5760320	439	if( ( ret = mbedtls_x509_get_time( p, end, from ) ) != 0 )
kenjiArai	0:5b88d5760320	440	return( ret );
kenjiArai	0:5b88d5760320	441
kenjiArai	0:5b88d5760320	442	if( ( ret = mbedtls_x509_get_time( p, end, to ) ) != 0 )
kenjiArai	0:5b88d5760320	443	return( ret );
kenjiArai	0:5b88d5760320	444
kenjiArai	0:5b88d5760320	445	if( *p != end )
kenjiArai	0:5b88d5760320	446	return( MBEDTLS_ERR_X509_INVALID_DATE +
kenjiArai	0:5b88d5760320	447	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	448
kenjiArai	0:5b88d5760320	449	return( 0 );
kenjiArai	0:5b88d5760320	450	}
kenjiArai	0:5b88d5760320	451
kenjiArai	0:5b88d5760320	452	/*
kenjiArai	0:5b88d5760320	453	* X.509 v2/v3 unique identifier (not parsed)
kenjiArai	0:5b88d5760320	454	*/
kenjiArai	0:5b88d5760320	455	static int x509_get_uid( unsigned char **p,
kenjiArai	0:5b88d5760320	456	const unsigned char *end,
kenjiArai	0:5b88d5760320	457	mbedtls_x509_buf *uid, int n )
kenjiArai	0:5b88d5760320	458	{
kenjiArai	0:5b88d5760320	459	int ret;
kenjiArai	0:5b88d5760320	460
kenjiArai	0:5b88d5760320	461	if( *p == end )
kenjiArai	0:5b88d5760320	462	return( 0 );
kenjiArai	0:5b88d5760320	463
kenjiArai	0:5b88d5760320	464	uid->tag = **p;
kenjiArai	0:5b88d5760320	465
kenjiArai	0:5b88d5760320	466	if( ( ret = mbedtls_asn1_get_tag( p, end, &uid->len,
kenjiArai	0:5b88d5760320	467	MBEDTLS_ASN1_CONTEXT_SPECIFIC \| MBEDTLS_ASN1_CONSTRUCTED \| n ) ) != 0 )
kenjiArai	0:5b88d5760320	468	{
kenjiArai	0:5b88d5760320	469	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
kenjiArai	0:5b88d5760320	470	return( 0 );
kenjiArai	0:5b88d5760320	471
kenjiArai	0:5b88d5760320	472	return( ret );
kenjiArai	0:5b88d5760320	473	}
kenjiArai	0:5b88d5760320	474
kenjiArai	0:5b88d5760320	475	uid->p = *p;
kenjiArai	0:5b88d5760320	476	*p += uid->len;
kenjiArai	0:5b88d5760320	477
kenjiArai	0:5b88d5760320	478	return( 0 );
kenjiArai	0:5b88d5760320	479	}
kenjiArai	0:5b88d5760320	480
kenjiArai	0:5b88d5760320	481	static int x509_get_basic_constraints( unsigned char **p,
kenjiArai	0:5b88d5760320	482	const unsigned char *end,
kenjiArai	0:5b88d5760320	483	int *ca_istrue,
kenjiArai	0:5b88d5760320	484	int *max_pathlen )
kenjiArai	0:5b88d5760320	485	{
kenjiArai	0:5b88d5760320	486	int ret;
kenjiArai	0:5b88d5760320	487	size_t len;
kenjiArai	0:5b88d5760320	488
kenjiArai	0:5b88d5760320	489	/*
kenjiArai	0:5b88d5760320	490	* BasicConstraints ::= SEQUENCE {
kenjiArai	0:5b88d5760320	491	* cA BOOLEAN DEFAULT FALSE,
kenjiArai	0:5b88d5760320	492	* pathLenConstraint INTEGER (0..MAX) OPTIONAL }
kenjiArai	0:5b88d5760320	493	*/
kenjiArai	0:5b88d5760320	494	ca_istrue = 0; / DEFAULT FALSE */
kenjiArai	0:5b88d5760320	495	max_pathlen = 0; / endless */
kenjiArai	0:5b88d5760320	496
kenjiArai	0:5b88d5760320	497	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
kenjiArai	0:5b88d5760320	498	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	499	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	500
kenjiArai	0:5b88d5760320	501	if( *p == end )
kenjiArai	0:5b88d5760320	502	return( 0 );
kenjiArai	0:5b88d5760320	503
kenjiArai	0:5b88d5760320	504	if( ( ret = mbedtls_asn1_get_bool( p, end, ca_istrue ) ) != 0 )
kenjiArai	0:5b88d5760320	505	{
kenjiArai	0:5b88d5760320	506	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
kenjiArai	0:5b88d5760320	507	ret = mbedtls_asn1_get_int( p, end, ca_istrue );
kenjiArai	0:5b88d5760320	508
kenjiArai	0:5b88d5760320	509	if( ret != 0 )
kenjiArai	0:5b88d5760320	510	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	511
kenjiArai	0:5b88d5760320	512	if( *ca_istrue != 0 )
kenjiArai	0:5b88d5760320	513	*ca_istrue = 1;
kenjiArai	0:5b88d5760320	514	}
kenjiArai	0:5b88d5760320	515
kenjiArai	0:5b88d5760320	516	if( *p == end )
kenjiArai	0:5b88d5760320	517	return( 0 );
kenjiArai	0:5b88d5760320	518
kenjiArai	0:5b88d5760320	519	if( ( ret = mbedtls_asn1_get_int( p, end, max_pathlen ) ) != 0 )
kenjiArai	0:5b88d5760320	520	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	521
kenjiArai	0:5b88d5760320	522	if( *p != end )
kenjiArai	0:5b88d5760320	523	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	524	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	525
kenjiArai	0:5b88d5760320	526	(*max_pathlen)++;
kenjiArai	0:5b88d5760320	527
kenjiArai	0:5b88d5760320	528	return( 0 );
kenjiArai	0:5b88d5760320	529	}
kenjiArai	0:5b88d5760320	530
kenjiArai	0:5b88d5760320	531	static int x509_get_ns_cert_type( unsigned char **p,
kenjiArai	0:5b88d5760320	532	const unsigned char *end,
kenjiArai	0:5b88d5760320	533	unsigned char *ns_cert_type)
kenjiArai	0:5b88d5760320	534	{
kenjiArai	0:5b88d5760320	535	int ret;
kenjiArai	0:5b88d5760320	536	mbedtls_x509_bitstring bs = { 0, 0, NULL };
kenjiArai	0:5b88d5760320	537
kenjiArai	0:5b88d5760320	538	if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
kenjiArai	0:5b88d5760320	539	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	540
kenjiArai	0:5b88d5760320	541	if( bs.len != 1 )
kenjiArai	0:5b88d5760320	542	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	543	MBEDTLS_ERR_ASN1_INVALID_LENGTH );
kenjiArai	0:5b88d5760320	544
kenjiArai	0:5b88d5760320	545	/* Get actual bitstring */
kenjiArai	0:5b88d5760320	546	ns_cert_type = bs.p;
kenjiArai	0:5b88d5760320	547	return( 0 );
kenjiArai	0:5b88d5760320	548	}
kenjiArai	0:5b88d5760320	549
kenjiArai	0:5b88d5760320	550	static int x509_get_key_usage( unsigned char **p,
kenjiArai	0:5b88d5760320	551	const unsigned char *end,
kenjiArai	0:5b88d5760320	552	unsigned int *key_usage)
kenjiArai	0:5b88d5760320	553	{
kenjiArai	0:5b88d5760320	554	int ret;
kenjiArai	0:5b88d5760320	555	size_t i;
kenjiArai	0:5b88d5760320	556	mbedtls_x509_bitstring bs = { 0, 0, NULL };
kenjiArai	0:5b88d5760320	557
kenjiArai	0:5b88d5760320	558	if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
kenjiArai	0:5b88d5760320	559	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	560
kenjiArai	0:5b88d5760320	561	if( bs.len < 1 )
kenjiArai	0:5b88d5760320	562	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	563	MBEDTLS_ERR_ASN1_INVALID_LENGTH );
kenjiArai	0:5b88d5760320	564
kenjiArai	0:5b88d5760320	565	/* Get actual bitstring */
kenjiArai	0:5b88d5760320	566	*key_usage = 0;
kenjiArai	0:5b88d5760320	567	for( i = 0; i < bs.len && i < sizeof( unsigned int ); i++ )
kenjiArai	0:5b88d5760320	568	{
kenjiArai	0:5b88d5760320	569	key_usage \|= (unsigned int) bs.p[i] << (8i);
kenjiArai	0:5b88d5760320	570	}
kenjiArai	0:5b88d5760320	571
kenjiArai	0:5b88d5760320	572	return( 0 );
kenjiArai	0:5b88d5760320	573	}
kenjiArai	0:5b88d5760320	574
kenjiArai	0:5b88d5760320	575	/*
kenjiArai	0:5b88d5760320	576	* ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
kenjiArai	0:5b88d5760320	577	*
kenjiArai	0:5b88d5760320	578	* KeyPurposeId ::= OBJECT IDENTIFIER
kenjiArai	0:5b88d5760320	579	*/
kenjiArai	0:5b88d5760320	580	static int x509_get_ext_key_usage( unsigned char **p,
kenjiArai	0:5b88d5760320	581	const unsigned char *end,
kenjiArai	0:5b88d5760320	582	mbedtls_x509_sequence *ext_key_usage)
kenjiArai	0:5b88d5760320	583	{
kenjiArai	0:5b88d5760320	584	int ret;
kenjiArai	0:5b88d5760320	585
kenjiArai	0:5b88d5760320	586	if( ( ret = mbedtls_asn1_get_sequence_of( p, end, ext_key_usage, MBEDTLS_ASN1_OID ) ) != 0 )
kenjiArai	0:5b88d5760320	587	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	588
kenjiArai	0:5b88d5760320	589	/* Sequence length must be >= 1 */
kenjiArai	0:5b88d5760320	590	if( ext_key_usage->buf.p == NULL )
kenjiArai	0:5b88d5760320	591	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	592	MBEDTLS_ERR_ASN1_INVALID_LENGTH );
kenjiArai	0:5b88d5760320	593
kenjiArai	0:5b88d5760320	594	return( 0 );
kenjiArai	0:5b88d5760320	595	}
kenjiArai	0:5b88d5760320	596
kenjiArai	0:5b88d5760320	597	/*
kenjiArai	0:5b88d5760320	598	* SubjectAltName ::= GeneralNames
kenjiArai	0:5b88d5760320	599	*
kenjiArai	0:5b88d5760320	600	* GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
kenjiArai	0:5b88d5760320	601	*
kenjiArai	0:5b88d5760320	602	* GeneralName ::= CHOICE {
kenjiArai	0:5b88d5760320	603	* otherName [0] OtherName,
kenjiArai	0:5b88d5760320	604	* rfc822Name [1] IA5String,
kenjiArai	0:5b88d5760320	605	* dNSName [2] IA5String,
kenjiArai	0:5b88d5760320	606	* x400Address [3] ORAddress,
kenjiArai	0:5b88d5760320	607	* directoryName [4] Name,
kenjiArai	0:5b88d5760320	608	* ediPartyName [5] EDIPartyName,
kenjiArai	0:5b88d5760320	609	* uniformResourceIdentifier [6] IA5String,
kenjiArai	0:5b88d5760320	610	* iPAddress [7] OCTET STRING,
kenjiArai	0:5b88d5760320	611	* registeredID [8] OBJECT IDENTIFIER }
kenjiArai	0:5b88d5760320	612	*
kenjiArai	0:5b88d5760320	613	* OtherName ::= SEQUENCE {
kenjiArai	0:5b88d5760320	614	* type-id OBJECT IDENTIFIER,
kenjiArai	0:5b88d5760320	615	* value [0] EXPLICIT ANY DEFINED BY type-id }
kenjiArai	0:5b88d5760320	616	*
kenjiArai	0:5b88d5760320	617	* EDIPartyName ::= SEQUENCE {
kenjiArai	0:5b88d5760320	618	* nameAssigner [0] DirectoryString OPTIONAL,
kenjiArai	0:5b88d5760320	619	* partyName [1] DirectoryString }
kenjiArai	0:5b88d5760320	620	*
kenjiArai	0:5b88d5760320	621	* NOTE: we list all types, but only use dNSName and otherName
kenjiArai	0:5b88d5760320	622	* of type HwModuleName, as defined in RFC 4108, at this point.
kenjiArai	0:5b88d5760320	623	*/
kenjiArai	0:5b88d5760320	624	static int x509_get_subject_alt_name( unsigned char **p,
kenjiArai	0:5b88d5760320	625	const unsigned char *end,
kenjiArai	0:5b88d5760320	626	mbedtls_x509_sequence *subject_alt_name )
kenjiArai	0:5b88d5760320	627	{
kenjiArai	0:5b88d5760320	628	int ret;
kenjiArai	0:5b88d5760320	629	size_t len, tag_len;
kenjiArai	0:5b88d5760320	630	mbedtls_asn1_buf *buf;
kenjiArai	0:5b88d5760320	631	unsigned char tag;
kenjiArai	0:5b88d5760320	632	mbedtls_asn1_sequence *cur = subject_alt_name;
kenjiArai	0:5b88d5760320	633
kenjiArai	0:5b88d5760320	634	/* Get main sequence tag */
kenjiArai	0:5b88d5760320	635	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
kenjiArai	0:5b88d5760320	636	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	637	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	638
kenjiArai	0:5b88d5760320	639	if( *p + len != end )
kenjiArai	0:5b88d5760320	640	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	641	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	642
kenjiArai	0:5b88d5760320	643	while( *p < end )
kenjiArai	0:5b88d5760320	644	{
kenjiArai	0:5b88d5760320	645	mbedtls_x509_subject_alternative_name dummy_san_buf;
kenjiArai	0:5b88d5760320	646	memset( &dummy_san_buf, 0, sizeof( dummy_san_buf ) );
kenjiArai	0:5b88d5760320	647
kenjiArai	0:5b88d5760320	648	if( ( end - *p ) < 1 )
kenjiArai	0:5b88d5760320	649	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	650	MBEDTLS_ERR_ASN1_OUT_OF_DATA );
kenjiArai	0:5b88d5760320	651
kenjiArai	0:5b88d5760320	652	tag = **p;
kenjiArai	0:5b88d5760320	653	(*p)++;
kenjiArai	0:5b88d5760320	654	if( ( ret = mbedtls_asn1_get_len( p, end, &tag_len ) ) != 0 )
kenjiArai	0:5b88d5760320	655	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	656
kenjiArai	0:5b88d5760320	657	if( ( tag & MBEDTLS_ASN1_TAG_CLASS_MASK ) !=
kenjiArai	0:5b88d5760320	658	MBEDTLS_ASN1_CONTEXT_SPECIFIC )
kenjiArai	0:5b88d5760320	659	{
kenjiArai	0:5b88d5760320	660	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	661	MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
kenjiArai	0:5b88d5760320	662	}
kenjiArai	0:5b88d5760320	663
kenjiArai	0:5b88d5760320	664	/*
kenjiArai	0:5b88d5760320	665	* Check that the SAN are structured correct.
kenjiArai	0:5b88d5760320	666	*/
kenjiArai	0:5b88d5760320	667	ret = mbedtls_x509_parse_subject_alt_name( &(cur->buf), &dummy_san_buf );
kenjiArai	0:5b88d5760320	668	/*
kenjiArai	0:5b88d5760320	669	* In case the extension is malformed, return an error,
kenjiArai	0:5b88d5760320	670	* and clear the allocated sequences.
kenjiArai	0:5b88d5760320	671	*/
kenjiArai	0:5b88d5760320	672	if( ret != 0 && ret != MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE )
kenjiArai	0:5b88d5760320	673	{
kenjiArai	0:5b88d5760320	674	mbedtls_x509_sequence *seq_cur = subject_alt_name->next;
kenjiArai	0:5b88d5760320	675	mbedtls_x509_sequence *seq_prv;
kenjiArai	0:5b88d5760320	676	while( seq_cur != NULL )
kenjiArai	0:5b88d5760320	677	{
kenjiArai	0:5b88d5760320	678	seq_prv = seq_cur;
kenjiArai	0:5b88d5760320	679	seq_cur = seq_cur->next;
kenjiArai	0:5b88d5760320	680	mbedtls_platform_zeroize( seq_prv,
kenjiArai	0:5b88d5760320	681	sizeof( mbedtls_x509_sequence ) );
kenjiArai	0:5b88d5760320	682	mbedtls_free( seq_prv );
kenjiArai	0:5b88d5760320	683	}
kenjiArai	0:5b88d5760320	684	subject_alt_name->next = NULL;
kenjiArai	0:5b88d5760320	685	return( ret );
kenjiArai	0:5b88d5760320	686	}
kenjiArai	0:5b88d5760320	687
kenjiArai	0:5b88d5760320	688	/* Allocate and assign next pointer */
kenjiArai	0:5b88d5760320	689	if( cur->buf.p != NULL )
kenjiArai	0:5b88d5760320	690	{
kenjiArai	0:5b88d5760320	691	if( cur->next != NULL )
kenjiArai	0:5b88d5760320	692	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
kenjiArai	0:5b88d5760320	693
kenjiArai	0:5b88d5760320	694	cur->next = mbedtls_calloc( 1, sizeof( mbedtls_asn1_sequence ) );
kenjiArai	0:5b88d5760320	695
kenjiArai	0:5b88d5760320	696	if( cur->next == NULL )
kenjiArai	0:5b88d5760320	697	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	698	MBEDTLS_ERR_ASN1_ALLOC_FAILED );
kenjiArai	0:5b88d5760320	699
kenjiArai	0:5b88d5760320	700	cur = cur->next;
kenjiArai	0:5b88d5760320	701	}
kenjiArai	0:5b88d5760320	702
kenjiArai	0:5b88d5760320	703	buf = &(cur->buf);
kenjiArai	0:5b88d5760320	704	buf->tag = tag;
kenjiArai	0:5b88d5760320	705	buf->p = *p;
kenjiArai	0:5b88d5760320	706	buf->len = tag_len;
kenjiArai	0:5b88d5760320	707	*p += buf->len;
kenjiArai	0:5b88d5760320	708	}
kenjiArai	0:5b88d5760320	709
kenjiArai	0:5b88d5760320	710	/* Set final sequence entry's next pointer to NULL */
kenjiArai	0:5b88d5760320	711	cur->next = NULL;
kenjiArai	0:5b88d5760320	712
kenjiArai	0:5b88d5760320	713	if( *p != end )
kenjiArai	0:5b88d5760320	714	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	715	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	716
kenjiArai	0:5b88d5760320	717	return( 0 );
kenjiArai	0:5b88d5760320	718	}
kenjiArai	0:5b88d5760320	719
kenjiArai	0:5b88d5760320	720	/*
kenjiArai	0:5b88d5760320	721	* id-ce-certificatePolicies OBJECT IDENTIFIER ::= { id-ce 32 }
kenjiArai	0:5b88d5760320	722	*
kenjiArai	0:5b88d5760320	723	* anyPolicy OBJECT IDENTIFIER ::= { id-ce-certificatePolicies 0 }
kenjiArai	0:5b88d5760320	724	*
kenjiArai	0:5b88d5760320	725	* certificatePolicies ::= SEQUENCE SIZE (1..MAX) OF PolicyInformation
kenjiArai	0:5b88d5760320	726	*
kenjiArai	0:5b88d5760320	727	* PolicyInformation ::= SEQUENCE {
kenjiArai	0:5b88d5760320	728	* policyIdentifier CertPolicyId,
kenjiArai	0:5b88d5760320	729	* policyQualifiers SEQUENCE SIZE (1..MAX) OF
kenjiArai	0:5b88d5760320	730	* PolicyQualifierInfo OPTIONAL }
kenjiArai	0:5b88d5760320	731	*
kenjiArai	0:5b88d5760320	732	* CertPolicyId ::= OBJECT IDENTIFIER
kenjiArai	0:5b88d5760320	733	*
kenjiArai	0:5b88d5760320	734	* PolicyQualifierInfo ::= SEQUENCE {
kenjiArai	0:5b88d5760320	735	* policyQualifierId PolicyQualifierId,
kenjiArai	0:5b88d5760320	736	* qualifier ANY DEFINED BY policyQualifierId }
kenjiArai	0:5b88d5760320	737	*
kenjiArai	0:5b88d5760320	738	* -- policyQualifierIds for Internet policy qualifiers
kenjiArai	0:5b88d5760320	739	*
kenjiArai	0:5b88d5760320	740	* id-qt OBJECT IDENTIFIER ::= { id-pkix 2 }
kenjiArai	0:5b88d5760320	741	* id-qt-cps OBJECT IDENTIFIER ::= { id-qt 1 }
kenjiArai	0:5b88d5760320	742	* id-qt-unotice OBJECT IDENTIFIER ::= { id-qt 2 }
kenjiArai	0:5b88d5760320	743	*
kenjiArai	0:5b88d5760320	744	* PolicyQualifierId ::= OBJECT IDENTIFIER ( id-qt-cps \| id-qt-unotice )
kenjiArai	0:5b88d5760320	745	*
kenjiArai	0:5b88d5760320	746	* Qualifier ::= CHOICE {
kenjiArai	0:5b88d5760320	747	* cPSuri CPSuri,
kenjiArai	0:5b88d5760320	748	* userNotice UserNotice }
kenjiArai	0:5b88d5760320	749	*
kenjiArai	0:5b88d5760320	750	* CPSuri ::= IA5String
kenjiArai	0:5b88d5760320	751	*
kenjiArai	0:5b88d5760320	752	* UserNotice ::= SEQUENCE {
kenjiArai	0:5b88d5760320	753	* noticeRef NoticeReference OPTIONAL,
kenjiArai	0:5b88d5760320	754	* explicitText DisplayText OPTIONAL }
kenjiArai	0:5b88d5760320	755	*
kenjiArai	0:5b88d5760320	756	* NoticeReference ::= SEQUENCE {
kenjiArai	0:5b88d5760320	757	* organization DisplayText,
kenjiArai	0:5b88d5760320	758	* noticeNumbers SEQUENCE OF INTEGER }
kenjiArai	0:5b88d5760320	759	*
kenjiArai	0:5b88d5760320	760	* DisplayText ::= CHOICE {
kenjiArai	0:5b88d5760320	761	* ia5String IA5String (SIZE (1..200)),
kenjiArai	0:5b88d5760320	762	* visibleString VisibleString (SIZE (1..200)),
kenjiArai	0:5b88d5760320	763	* bmpString BMPString (SIZE (1..200)),
kenjiArai	0:5b88d5760320	764	* utf8String UTF8String (SIZE (1..200)) }
kenjiArai	0:5b88d5760320	765	*
kenjiArai	0:5b88d5760320	766	* NOTE: we only parse and use anyPolicy without qualifiers at this point
kenjiArai	0:5b88d5760320	767	* as defined in RFC 5280.
kenjiArai	0:5b88d5760320	768	*/
kenjiArai	0:5b88d5760320	769	static int x509_get_certificate_policies( unsigned char **p,
kenjiArai	0:5b88d5760320	770	const unsigned char *end,
kenjiArai	0:5b88d5760320	771	mbedtls_x509_sequence *certificate_policies )
kenjiArai	0:5b88d5760320	772	{
kenjiArai	0:5b88d5760320	773	int ret, parse_ret = 0;
kenjiArai	0:5b88d5760320	774	size_t len;
kenjiArai	0:5b88d5760320	775	mbedtls_asn1_buf *buf;
kenjiArai	0:5b88d5760320	776	mbedtls_asn1_sequence *cur = certificate_policies;
kenjiArai	0:5b88d5760320	777
kenjiArai	0:5b88d5760320	778	/* Get main sequence tag */
kenjiArai	0:5b88d5760320	779	ret = mbedtls_asn1_get_tag( p, end, &len,
kenjiArai	0:5b88d5760320	780	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE );
kenjiArai	0:5b88d5760320	781	if( ret != 0 )
kenjiArai	0:5b88d5760320	782	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	783
kenjiArai	0:5b88d5760320	784	if( *p + len != end )
kenjiArai	0:5b88d5760320	785	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	786	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	787
kenjiArai	0:5b88d5760320	788	/*
kenjiArai	0:5b88d5760320	789	* Cannot be an empty sequence.
kenjiArai	0:5b88d5760320	790	*/
kenjiArai	0:5b88d5760320	791	if( len == 0 )
kenjiArai	0:5b88d5760320	792	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	793	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	794
kenjiArai	0:5b88d5760320	795	while( *p < end )
kenjiArai	0:5b88d5760320	796	{
kenjiArai	0:5b88d5760320	797	mbedtls_x509_buf policy_oid;
kenjiArai	0:5b88d5760320	798	const unsigned char *policy_end;
kenjiArai	0:5b88d5760320	799
kenjiArai	0:5b88d5760320	800	/*
kenjiArai	0:5b88d5760320	801	* Get the policy sequence
kenjiArai	0:5b88d5760320	802	*/
kenjiArai	0:5b88d5760320	803	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
kenjiArai	0:5b88d5760320	804	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	805	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	806
kenjiArai	0:5b88d5760320	807	policy_end = *p + len;
kenjiArai	0:5b88d5760320	808
kenjiArai	0:5b88d5760320	809	if( ( ret = mbedtls_asn1_get_tag( p, policy_end, &len,
kenjiArai	0:5b88d5760320	810	MBEDTLS_ASN1_OID ) ) != 0 )
kenjiArai	0:5b88d5760320	811	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	812
kenjiArai	0:5b88d5760320	813	policy_oid.tag = MBEDTLS_ASN1_OID;
kenjiArai	0:5b88d5760320	814	policy_oid.len = len;
kenjiArai	0:5b88d5760320	815	policy_oid.p = *p;
kenjiArai	0:5b88d5760320	816
kenjiArai	0:5b88d5760320	817	/*
kenjiArai	0:5b88d5760320	818	* Only AnyPolicy is currently supported when enforcing policy.
kenjiArai	0:5b88d5760320	819	*/
kenjiArai	0:5b88d5760320	820	if( MBEDTLS_OID_CMP( MBEDTLS_OID_ANY_POLICY, &policy_oid ) != 0 )
kenjiArai	0:5b88d5760320	821	{
kenjiArai	0:5b88d5760320	822	/*
kenjiArai	0:5b88d5760320	823	* Set the parsing return code but continue parsing, in case this
kenjiArai	0:5b88d5760320	824	* extension is critical and MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
kenjiArai	0:5b88d5760320	825	* is configured.
kenjiArai	0:5b88d5760320	826	*/
kenjiArai	0:5b88d5760320	827	parse_ret = MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE;
kenjiArai	0:5b88d5760320	828	}
kenjiArai	0:5b88d5760320	829
kenjiArai	0:5b88d5760320	830	/* Allocate and assign next pointer */
kenjiArai	0:5b88d5760320	831	if( cur->buf.p != NULL )
kenjiArai	0:5b88d5760320	832	{
kenjiArai	0:5b88d5760320	833	if( cur->next != NULL )
kenjiArai	0:5b88d5760320	834	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
kenjiArai	0:5b88d5760320	835
kenjiArai	0:5b88d5760320	836	cur->next = mbedtls_calloc( 1, sizeof( mbedtls_asn1_sequence ) );
kenjiArai	0:5b88d5760320	837
kenjiArai	0:5b88d5760320	838	if( cur->next == NULL )
kenjiArai	0:5b88d5760320	839	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	840	MBEDTLS_ERR_ASN1_ALLOC_FAILED );
kenjiArai	0:5b88d5760320	841
kenjiArai	0:5b88d5760320	842	cur = cur->next;
kenjiArai	0:5b88d5760320	843	}
kenjiArai	0:5b88d5760320	844
kenjiArai	0:5b88d5760320	845	buf = &( cur->buf );
kenjiArai	0:5b88d5760320	846	buf->tag = policy_oid.tag;
kenjiArai	0:5b88d5760320	847	buf->p = policy_oid.p;
kenjiArai	0:5b88d5760320	848	buf->len = policy_oid.len;
kenjiArai	0:5b88d5760320	849
kenjiArai	0:5b88d5760320	850	*p += len;
kenjiArai	0:5b88d5760320	851
kenjiArai	0:5b88d5760320	852	/*
kenjiArai	0:5b88d5760320	853	* If there is an optional qualifier, then *p < policy_end
kenjiArai	0:5b88d5760320	854	* Check the Qualifier len to verify it doesn't exceed policy_end.
kenjiArai	0:5b88d5760320	855	*/
kenjiArai	0:5b88d5760320	856	if( *p < policy_end )
kenjiArai	0:5b88d5760320	857	{
kenjiArai	0:5b88d5760320	858	if( ( ret = mbedtls_asn1_get_tag( p, policy_end, &len,
kenjiArai	0:5b88d5760320	859	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	860	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	861	/*
kenjiArai	0:5b88d5760320	862	* Skip the optional policy qualifiers.
kenjiArai	0:5b88d5760320	863	*/
kenjiArai	0:5b88d5760320	864	*p += len;
kenjiArai	0:5b88d5760320	865	}
kenjiArai	0:5b88d5760320	866
kenjiArai	0:5b88d5760320	867	if( *p != policy_end )
kenjiArai	0:5b88d5760320	868	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	869	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	870	}
kenjiArai	0:5b88d5760320	871
kenjiArai	0:5b88d5760320	872	/* Set final sequence entry's next pointer to NULL */
kenjiArai	0:5b88d5760320	873	cur->next = NULL;
kenjiArai	0:5b88d5760320	874
kenjiArai	0:5b88d5760320	875	if( *p != end )
kenjiArai	0:5b88d5760320	876	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	877	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	878
kenjiArai	0:5b88d5760320	879	return( parse_ret );
kenjiArai	0:5b88d5760320	880	}
kenjiArai	0:5b88d5760320	881
kenjiArai	0:5b88d5760320	882	/*
kenjiArai	0:5b88d5760320	883	* X.509 v3 extensions
kenjiArai	0:5b88d5760320	884	*
kenjiArai	0:5b88d5760320	885	*/
kenjiArai	0:5b88d5760320	886	static int x509_get_crt_ext( unsigned char **p,
kenjiArai	0:5b88d5760320	887	const unsigned char *end,
kenjiArai	0:5b88d5760320	888	mbedtls_x509_crt *crt )
kenjiArai	0:5b88d5760320	889	{
kenjiArai	0:5b88d5760320	890	int ret;
kenjiArai	0:5b88d5760320	891	size_t len;
kenjiArai	0:5b88d5760320	892	unsigned char end_ext_data, end_ext_octet;
kenjiArai	0:5b88d5760320	893
kenjiArai	0:5b88d5760320	894	if( ( ret = mbedtls_x509_get_ext( p, end, &crt->v3_ext, 3 ) ) != 0 )
kenjiArai	0:5b88d5760320	895	{
kenjiArai	0:5b88d5760320	896	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
kenjiArai	0:5b88d5760320	897	return( 0 );
kenjiArai	0:5b88d5760320	898
kenjiArai	0:5b88d5760320	899	return( ret );
kenjiArai	0:5b88d5760320	900	}
kenjiArai	0:5b88d5760320	901
kenjiArai	0:5b88d5760320	902	while( *p < end )
kenjiArai	0:5b88d5760320	903	{
kenjiArai	0:5b88d5760320	904	/*
kenjiArai	0:5b88d5760320	905	* Extension ::= SEQUENCE {
kenjiArai	0:5b88d5760320	906	* extnID OBJECT IDENTIFIER,
kenjiArai	0:5b88d5760320	907	* critical BOOLEAN DEFAULT FALSE,
kenjiArai	0:5b88d5760320	908	* extnValue OCTET STRING }
kenjiArai	0:5b88d5760320	909	*/
kenjiArai	0:5b88d5760320	910	mbedtls_x509_buf extn_oid = {0, 0, NULL};
kenjiArai	0:5b88d5760320	911	int is_critical = 0; /* DEFAULT FALSE */
kenjiArai	0:5b88d5760320	912	int ext_type = 0;
kenjiArai	0:5b88d5760320	913
kenjiArai	0:5b88d5760320	914	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
kenjiArai	0:5b88d5760320	915	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	916	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	917
kenjiArai	0:5b88d5760320	918	end_ext_data = *p + len;
kenjiArai	0:5b88d5760320	919
kenjiArai	0:5b88d5760320	920	/* Get extension ID */
kenjiArai	0:5b88d5760320	921	if( ( ret = mbedtls_asn1_get_tag( p, end_ext_data, &extn_oid.len,
kenjiArai	0:5b88d5760320	922	MBEDTLS_ASN1_OID ) ) != 0 )
kenjiArai	0:5b88d5760320	923	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	924
kenjiArai	0:5b88d5760320	925	extn_oid.tag = MBEDTLS_ASN1_OID;
kenjiArai	0:5b88d5760320	926	extn_oid.p = *p;
kenjiArai	0:5b88d5760320	927	*p += extn_oid.len;
kenjiArai	0:5b88d5760320	928
kenjiArai	0:5b88d5760320	929	/* Get optional critical */
kenjiArai	0:5b88d5760320	930	if( ( ret = mbedtls_asn1_get_bool( p, end_ext_data, &is_critical ) ) != 0 &&
kenjiArai	0:5b88d5760320	931	( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) )
kenjiArai	0:5b88d5760320	932	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	933
kenjiArai	0:5b88d5760320	934	/* Data should be octet string type */
kenjiArai	0:5b88d5760320	935	if( ( ret = mbedtls_asn1_get_tag( p, end_ext_data, &len,
kenjiArai	0:5b88d5760320	936	MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
kenjiArai	0:5b88d5760320	937	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	938
kenjiArai	0:5b88d5760320	939	end_ext_octet = *p + len;
kenjiArai	0:5b88d5760320	940
kenjiArai	0:5b88d5760320	941	if( end_ext_octet != end_ext_data )
kenjiArai	0:5b88d5760320	942	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	943	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	944
kenjiArai	0:5b88d5760320	945	/*
kenjiArai	0:5b88d5760320	946	* Detect supported extensions
kenjiArai	0:5b88d5760320	947	*/
kenjiArai	0:5b88d5760320	948	ret = mbedtls_oid_get_x509_ext_type( &extn_oid, &ext_type );
kenjiArai	0:5b88d5760320	949
kenjiArai	0:5b88d5760320	950	if( ret != 0 )
kenjiArai	0:5b88d5760320	951	{
kenjiArai	0:5b88d5760320	952	/* No parser found, skip extension */
kenjiArai	0:5b88d5760320	953	*p = end_ext_octet;
kenjiArai	0:5b88d5760320	954
kenjiArai	0:5b88d5760320	955	#if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
kenjiArai	0:5b88d5760320	956	if( is_critical )
kenjiArai	0:5b88d5760320	957	{
kenjiArai	0:5b88d5760320	958	/* Data is marked as critical: fail */
kenjiArai	0:5b88d5760320	959	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	960	MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
kenjiArai	0:5b88d5760320	961	}
kenjiArai	0:5b88d5760320	962	#endif
kenjiArai	0:5b88d5760320	963	continue;
kenjiArai	0:5b88d5760320	964	}
kenjiArai	0:5b88d5760320	965
kenjiArai	0:5b88d5760320	966	/* Forbid repeated extensions */
kenjiArai	0:5b88d5760320	967	if( ( crt->ext_types & ext_type ) != 0 )
kenjiArai	0:5b88d5760320	968	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
kenjiArai	0:5b88d5760320	969
kenjiArai	0:5b88d5760320	970	crt->ext_types \|= ext_type;
kenjiArai	0:5b88d5760320	971
kenjiArai	0:5b88d5760320	972	switch( ext_type )
kenjiArai	0:5b88d5760320	973	{
kenjiArai	0:5b88d5760320	974	case MBEDTLS_X509_EXT_BASIC_CONSTRAINTS:
kenjiArai	0:5b88d5760320	975	/* Parse basic constraints */
kenjiArai	0:5b88d5760320	976	if( ( ret = x509_get_basic_constraints( p, end_ext_octet,
kenjiArai	0:5b88d5760320	977	&crt->ca_istrue, &crt->max_pathlen ) ) != 0 )
kenjiArai	0:5b88d5760320	978	return( ret );
kenjiArai	0:5b88d5760320	979	break;
kenjiArai	0:5b88d5760320	980
kenjiArai	0:5b88d5760320	981	case MBEDTLS_X509_EXT_KEY_USAGE:
kenjiArai	0:5b88d5760320	982	/* Parse key usage */
kenjiArai	0:5b88d5760320	983	if( ( ret = x509_get_key_usage( p, end_ext_octet,
kenjiArai	0:5b88d5760320	984	&crt->key_usage ) ) != 0 )
kenjiArai	0:5b88d5760320	985	return( ret );
kenjiArai	0:5b88d5760320	986	break;
kenjiArai	0:5b88d5760320	987
kenjiArai	0:5b88d5760320	988	case MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE:
kenjiArai	0:5b88d5760320	989	/* Parse extended key usage */
kenjiArai	0:5b88d5760320	990	if( ( ret = x509_get_ext_key_usage( p, end_ext_octet,
kenjiArai	0:5b88d5760320	991	&crt->ext_key_usage ) ) != 0 )
kenjiArai	0:5b88d5760320	992	return( ret );
kenjiArai	0:5b88d5760320	993	break;
kenjiArai	0:5b88d5760320	994
kenjiArai	0:5b88d5760320	995	case MBEDTLS_X509_EXT_SUBJECT_ALT_NAME:
kenjiArai	0:5b88d5760320	996	/* Parse subject alt name */
kenjiArai	0:5b88d5760320	997	if( ( ret = x509_get_subject_alt_name( p, end_ext_octet,
kenjiArai	0:5b88d5760320	998	&crt->subject_alt_names ) ) != 0 )
kenjiArai	0:5b88d5760320	999	return( ret );
kenjiArai	0:5b88d5760320	1000	break;
kenjiArai	0:5b88d5760320	1001
kenjiArai	0:5b88d5760320	1002	case MBEDTLS_X509_EXT_NS_CERT_TYPE:
kenjiArai	0:5b88d5760320	1003	/* Parse netscape certificate type */
kenjiArai	0:5b88d5760320	1004	if( ( ret = x509_get_ns_cert_type( p, end_ext_octet,
kenjiArai	0:5b88d5760320	1005	&crt->ns_cert_type ) ) != 0 )
kenjiArai	0:5b88d5760320	1006	return( ret );
kenjiArai	0:5b88d5760320	1007	break;
kenjiArai	0:5b88d5760320	1008
kenjiArai	0:5b88d5760320	1009	case MBEDTLS_OID_X509_EXT_CERTIFICATE_POLICIES:
kenjiArai	0:5b88d5760320	1010	/* Parse certificate policies type */
kenjiArai	0:5b88d5760320	1011	if( ( ret = x509_get_certificate_policies( p, end_ext_octet,
kenjiArai	0:5b88d5760320	1012	&crt->certificate_policies ) ) != 0 )
kenjiArai	0:5b88d5760320	1013	{
kenjiArai	0:5b88d5760320	1014	#if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
kenjiArai	0:5b88d5760320	1015	if( is_critical )
kenjiArai	0:5b88d5760320	1016	return( ret );
kenjiArai	0:5b88d5760320	1017	else
kenjiArai	0:5b88d5760320	1018	#endif
kenjiArai	0:5b88d5760320	1019	/*
kenjiArai	0:5b88d5760320	1020	* If MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE is returned, then we
kenjiArai	0:5b88d5760320	1021	* cannot interpret or enforce the policy. However, it is up to
kenjiArai	0:5b88d5760320	1022	* the user to choose how to enforce the policies,
kenjiArai	0:5b88d5760320	1023	* unless the extension is critical.
kenjiArai	0:5b88d5760320	1024	*/
kenjiArai	0:5b88d5760320	1025	if( ret != MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE )
kenjiArai	0:5b88d5760320	1026	return( ret );
kenjiArai	0:5b88d5760320	1027	}
kenjiArai	0:5b88d5760320	1028	break;
kenjiArai	0:5b88d5760320	1029
kenjiArai	0:5b88d5760320	1030	default:
kenjiArai	0:5b88d5760320	1031	/*
kenjiArai	0:5b88d5760320	1032	* If this is a non-critical extension, which the oid layer
kenjiArai	0:5b88d5760320	1033	* supports, but there isn't an x509 parser for it,
kenjiArai	0:5b88d5760320	1034	* skip the extension.
kenjiArai	0:5b88d5760320	1035	*/
kenjiArai	0:5b88d5760320	1036	#if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
kenjiArai	0:5b88d5760320	1037	if( is_critical )
kenjiArai	0:5b88d5760320	1038	return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
kenjiArai	0:5b88d5760320	1039	else
kenjiArai	0:5b88d5760320	1040	#endif
kenjiArai	0:5b88d5760320	1041	*p = end_ext_octet;
kenjiArai	0:5b88d5760320	1042	}
kenjiArai	0:5b88d5760320	1043	}
kenjiArai	0:5b88d5760320	1044
kenjiArai	0:5b88d5760320	1045	if( *p != end )
kenjiArai	0:5b88d5760320	1046	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	1047	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	1048
kenjiArai	0:5b88d5760320	1049	return( 0 );
kenjiArai	0:5b88d5760320	1050	}
kenjiArai	0:5b88d5760320	1051
kenjiArai	0:5b88d5760320	1052	/*
kenjiArai	0:5b88d5760320	1053	* Parse and fill a single X.509 certificate in DER format
kenjiArai	0:5b88d5760320	1054	*/
kenjiArai	0:5b88d5760320	1055	static int x509_crt_parse_der_core( mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	1056	const unsigned char *buf,
kenjiArai	0:5b88d5760320	1057	size_t buflen,
kenjiArai	0:5b88d5760320	1058	int make_copy )
kenjiArai	0:5b88d5760320	1059	{
kenjiArai	0:5b88d5760320	1060	int ret;
kenjiArai	0:5b88d5760320	1061	size_t len;
kenjiArai	0:5b88d5760320	1062	unsigned char p, end, *crt_end;
kenjiArai	0:5b88d5760320	1063	mbedtls_x509_buf sig_params1, sig_params2, sig_oid2;
kenjiArai	0:5b88d5760320	1064
kenjiArai	0:5b88d5760320	1065	memset( &sig_params1, 0, sizeof( mbedtls_x509_buf ) );
kenjiArai	0:5b88d5760320	1066	memset( &sig_params2, 0, sizeof( mbedtls_x509_buf ) );
kenjiArai	0:5b88d5760320	1067	memset( &sig_oid2, 0, sizeof( mbedtls_x509_buf ) );
kenjiArai	0:5b88d5760320	1068
kenjiArai	0:5b88d5760320	1069	/*
kenjiArai	0:5b88d5760320	1070	* Check for valid input
kenjiArai	0:5b88d5760320	1071	*/
kenjiArai	0:5b88d5760320	1072	if( crt == NULL \|\| buf == NULL )
kenjiArai	0:5b88d5760320	1073	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
kenjiArai	0:5b88d5760320	1074
kenjiArai	0:5b88d5760320	1075	/* Use the original buffer until we figure out actual length. */
kenjiArai	0:5b88d5760320	1076	p = (unsigned char*) buf;
kenjiArai	0:5b88d5760320	1077	len = buflen;
kenjiArai	0:5b88d5760320	1078	end = p + len;
kenjiArai	0:5b88d5760320	1079
kenjiArai	0:5b88d5760320	1080	/*
kenjiArai	0:5b88d5760320	1081	* Certificate ::= SEQUENCE {
kenjiArai	0:5b88d5760320	1082	* tbsCertificate TBSCertificate,
kenjiArai	0:5b88d5760320	1083	* signatureAlgorithm AlgorithmIdentifier,
kenjiArai	0:5b88d5760320	1084	* signatureValue BIT STRING }
kenjiArai	0:5b88d5760320	1085	*/
kenjiArai	0:5b88d5760320	1086	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
kenjiArai	0:5b88d5760320	1087	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	1088	{
kenjiArai	0:5b88d5760320	1089	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1090	return( MBEDTLS_ERR_X509_INVALID_FORMAT );
kenjiArai	0:5b88d5760320	1091	}
kenjiArai	0:5b88d5760320	1092
kenjiArai	0:5b88d5760320	1093	end = crt_end = p + len;
kenjiArai	0:5b88d5760320	1094	crt->raw.len = crt_end - buf;
kenjiArai	0:5b88d5760320	1095	if( make_copy != 0 )
kenjiArai	0:5b88d5760320	1096	{
kenjiArai	0:5b88d5760320	1097	/* Create and populate a new buffer for the raw field. */
kenjiArai	0:5b88d5760320	1098	crt->raw.p = p = mbedtls_calloc( 1, crt->raw.len );
kenjiArai	0:5b88d5760320	1099	if( crt->raw.p == NULL )
kenjiArai	0:5b88d5760320	1100	return( MBEDTLS_ERR_X509_ALLOC_FAILED );
kenjiArai	0:5b88d5760320	1101
kenjiArai	0:5b88d5760320	1102	memcpy( crt->raw.p, buf, crt->raw.len );
kenjiArai	0:5b88d5760320	1103	crt->own_buffer = 1;
kenjiArai	0:5b88d5760320	1104
kenjiArai	0:5b88d5760320	1105	p += crt->raw.len - len;
kenjiArai	0:5b88d5760320	1106	end = crt_end = p + len;
kenjiArai	0:5b88d5760320	1107	}
kenjiArai	0:5b88d5760320	1108	else
kenjiArai	0:5b88d5760320	1109	{
kenjiArai	0:5b88d5760320	1110	crt->raw.p = (unsigned char*) buf;
kenjiArai	0:5b88d5760320	1111	crt->own_buffer = 0;
kenjiArai	0:5b88d5760320	1112	}
kenjiArai	0:5b88d5760320	1113
kenjiArai	0:5b88d5760320	1114	/*
kenjiArai	0:5b88d5760320	1115	* TBSCertificate ::= SEQUENCE {
kenjiArai	0:5b88d5760320	1116	*/
kenjiArai	0:5b88d5760320	1117	crt->tbs.p = p;
kenjiArai	0:5b88d5760320	1118
kenjiArai	0:5b88d5760320	1119	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
kenjiArai	0:5b88d5760320	1120	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	1121	{
kenjiArai	0:5b88d5760320	1122	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1123	return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
kenjiArai	0:5b88d5760320	1124	}
kenjiArai	0:5b88d5760320	1125
kenjiArai	0:5b88d5760320	1126	end = p + len;
kenjiArai	0:5b88d5760320	1127	crt->tbs.len = end - crt->tbs.p;
kenjiArai	0:5b88d5760320	1128
kenjiArai	0:5b88d5760320	1129	/*
kenjiArai	0:5b88d5760320	1130	* Version ::= INTEGER { v1(0), v2(1), v3(2) }
kenjiArai	0:5b88d5760320	1131	*
kenjiArai	0:5b88d5760320	1132	* CertificateSerialNumber ::= INTEGER
kenjiArai	0:5b88d5760320	1133	*
kenjiArai	0:5b88d5760320	1134	* signature AlgorithmIdentifier
kenjiArai	0:5b88d5760320	1135	*/
kenjiArai	0:5b88d5760320	1136	if( ( ret = x509_get_version( &p, end, &crt->version ) ) != 0 \|\|
kenjiArai	0:5b88d5760320	1137	( ret = mbedtls_x509_get_serial( &p, end, &crt->serial ) ) != 0 \|\|
kenjiArai	0:5b88d5760320	1138	( ret = mbedtls_x509_get_alg( &p, end, &crt->sig_oid,
kenjiArai	0:5b88d5760320	1139	&sig_params1 ) ) != 0 )
kenjiArai	0:5b88d5760320	1140	{
kenjiArai	0:5b88d5760320	1141	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1142	return( ret );
kenjiArai	0:5b88d5760320	1143	}
kenjiArai	0:5b88d5760320	1144
kenjiArai	0:5b88d5760320	1145	if( crt->version < 0 \|\| crt->version > 2 )
kenjiArai	0:5b88d5760320	1146	{
kenjiArai	0:5b88d5760320	1147	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1148	return( MBEDTLS_ERR_X509_UNKNOWN_VERSION );
kenjiArai	0:5b88d5760320	1149	}
kenjiArai	0:5b88d5760320	1150
kenjiArai	0:5b88d5760320	1151	crt->version++;
kenjiArai	0:5b88d5760320	1152
kenjiArai	0:5b88d5760320	1153	if( ( ret = mbedtls_x509_get_sig_alg( &crt->sig_oid, &sig_params1,
kenjiArai	0:5b88d5760320	1154	&crt->sig_md, &crt->sig_pk,
kenjiArai	0:5b88d5760320	1155	&crt->sig_opts ) ) != 0 )
kenjiArai	0:5b88d5760320	1156	{
kenjiArai	0:5b88d5760320	1157	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1158	return( ret );
kenjiArai	0:5b88d5760320	1159	}
kenjiArai	0:5b88d5760320	1160
kenjiArai	0:5b88d5760320	1161	/*
kenjiArai	0:5b88d5760320	1162	* issuer Name
kenjiArai	0:5b88d5760320	1163	*/
kenjiArai	0:5b88d5760320	1164	crt->issuer_raw.p = p;
kenjiArai	0:5b88d5760320	1165
kenjiArai	0:5b88d5760320	1166	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
kenjiArai	0:5b88d5760320	1167	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	1168	{
kenjiArai	0:5b88d5760320	1169	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1170	return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
kenjiArai	0:5b88d5760320	1171	}
kenjiArai	0:5b88d5760320	1172
kenjiArai	0:5b88d5760320	1173	if( ( ret = mbedtls_x509_get_name( &p, p + len, &crt->issuer ) ) != 0 )
kenjiArai	0:5b88d5760320	1174	{
kenjiArai	0:5b88d5760320	1175	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1176	return( ret );
kenjiArai	0:5b88d5760320	1177	}
kenjiArai	0:5b88d5760320	1178
kenjiArai	0:5b88d5760320	1179	crt->issuer_raw.len = p - crt->issuer_raw.p;
kenjiArai	0:5b88d5760320	1180
kenjiArai	0:5b88d5760320	1181	/*
kenjiArai	0:5b88d5760320	1182	* Validity ::= SEQUENCE {
kenjiArai	0:5b88d5760320	1183	* notBefore Time,
kenjiArai	0:5b88d5760320	1184	* notAfter Time }
kenjiArai	0:5b88d5760320	1185	*
kenjiArai	0:5b88d5760320	1186	*/
kenjiArai	0:5b88d5760320	1187	if( ( ret = x509_get_dates( &p, end, &crt->valid_from,
kenjiArai	0:5b88d5760320	1188	&crt->valid_to ) ) != 0 )
kenjiArai	0:5b88d5760320	1189	{
kenjiArai	0:5b88d5760320	1190	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1191	return( ret );
kenjiArai	0:5b88d5760320	1192	}
kenjiArai	0:5b88d5760320	1193
kenjiArai	0:5b88d5760320	1194	/*
kenjiArai	0:5b88d5760320	1195	* subject Name
kenjiArai	0:5b88d5760320	1196	*/
kenjiArai	0:5b88d5760320	1197	crt->subject_raw.p = p;
kenjiArai	0:5b88d5760320	1198
kenjiArai	0:5b88d5760320	1199	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
kenjiArai	0:5b88d5760320	1200	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	1201	{
kenjiArai	0:5b88d5760320	1202	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1203	return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
kenjiArai	0:5b88d5760320	1204	}
kenjiArai	0:5b88d5760320	1205
kenjiArai	0:5b88d5760320	1206	if( len && ( ret = mbedtls_x509_get_name( &p, p + len, &crt->subject ) ) != 0 )
kenjiArai	0:5b88d5760320	1207	{
kenjiArai	0:5b88d5760320	1208	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1209	return( ret );
kenjiArai	0:5b88d5760320	1210	}
kenjiArai	0:5b88d5760320	1211
kenjiArai	0:5b88d5760320	1212	crt->subject_raw.len = p - crt->subject_raw.p;
kenjiArai	0:5b88d5760320	1213
kenjiArai	0:5b88d5760320	1214	/*
kenjiArai	0:5b88d5760320	1215	* SubjectPublicKeyInfo
kenjiArai	0:5b88d5760320	1216	*/
kenjiArai	0:5b88d5760320	1217	crt->pk_raw.p = p;
kenjiArai	0:5b88d5760320	1218	if( ( ret = mbedtls_pk_parse_subpubkey( &p, end, &crt->pk ) ) != 0 )
kenjiArai	0:5b88d5760320	1219	{
kenjiArai	0:5b88d5760320	1220	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1221	return( ret );
kenjiArai	0:5b88d5760320	1222	}
kenjiArai	0:5b88d5760320	1223	crt->pk_raw.len = p - crt->pk_raw.p;
kenjiArai	0:5b88d5760320	1224
kenjiArai	0:5b88d5760320	1225	/*
kenjiArai	0:5b88d5760320	1226	* issuerUniqueID [1] IMPLICIT UniqueIdentifier OPTIONAL,
kenjiArai	0:5b88d5760320	1227	* -- If present, version shall be v2 or v3
kenjiArai	0:5b88d5760320	1228	* subjectUniqueID [2] IMPLICIT UniqueIdentifier OPTIONAL,
kenjiArai	0:5b88d5760320	1229	* -- If present, version shall be v2 or v3
kenjiArai	0:5b88d5760320	1230	* extensions [3] EXPLICIT Extensions OPTIONAL
kenjiArai	0:5b88d5760320	1231	* -- If present, version shall be v3
kenjiArai	0:5b88d5760320	1232	*/
kenjiArai	0:5b88d5760320	1233	if( crt->version == 2 \|\| crt->version == 3 )
kenjiArai	0:5b88d5760320	1234	{
kenjiArai	0:5b88d5760320	1235	ret = x509_get_uid( &p, end, &crt->issuer_id, 1 );
kenjiArai	0:5b88d5760320	1236	if( ret != 0 )
kenjiArai	0:5b88d5760320	1237	{
kenjiArai	0:5b88d5760320	1238	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1239	return( ret );
kenjiArai	0:5b88d5760320	1240	}
kenjiArai	0:5b88d5760320	1241	}
kenjiArai	0:5b88d5760320	1242
kenjiArai	0:5b88d5760320	1243	if( crt->version == 2 \|\| crt->version == 3 )
kenjiArai	0:5b88d5760320	1244	{
kenjiArai	0:5b88d5760320	1245	ret = x509_get_uid( &p, end, &crt->subject_id, 2 );
kenjiArai	0:5b88d5760320	1246	if( ret != 0 )
kenjiArai	0:5b88d5760320	1247	{
kenjiArai	0:5b88d5760320	1248	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1249	return( ret );
kenjiArai	0:5b88d5760320	1250	}
kenjiArai	0:5b88d5760320	1251	}
kenjiArai	0:5b88d5760320	1252
kenjiArai	0:5b88d5760320	1253	#if !defined(MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3)
kenjiArai	0:5b88d5760320	1254	if( crt->version == 3 )
kenjiArai	0:5b88d5760320	1255	#endif
kenjiArai	0:5b88d5760320	1256	{
kenjiArai	0:5b88d5760320	1257	ret = x509_get_crt_ext( &p, end, crt );
kenjiArai	0:5b88d5760320	1258	if( ret != 0 )
kenjiArai	0:5b88d5760320	1259	{
kenjiArai	0:5b88d5760320	1260	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1261	return( ret );
kenjiArai	0:5b88d5760320	1262	}
kenjiArai	0:5b88d5760320	1263	}
kenjiArai	0:5b88d5760320	1264
kenjiArai	0:5b88d5760320	1265	if( p != end )
kenjiArai	0:5b88d5760320	1266	{
kenjiArai	0:5b88d5760320	1267	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1268	return( MBEDTLS_ERR_X509_INVALID_FORMAT +
kenjiArai	0:5b88d5760320	1269	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	1270	}
kenjiArai	0:5b88d5760320	1271
kenjiArai	0:5b88d5760320	1272	end = crt_end;
kenjiArai	0:5b88d5760320	1273
kenjiArai	0:5b88d5760320	1274	/*
kenjiArai	0:5b88d5760320	1275	* }
kenjiArai	0:5b88d5760320	1276	* -- end of TBSCertificate
kenjiArai	0:5b88d5760320	1277	*
kenjiArai	0:5b88d5760320	1278	* signatureAlgorithm AlgorithmIdentifier,
kenjiArai	0:5b88d5760320	1279	* signatureValue BIT STRING
kenjiArai	0:5b88d5760320	1280	*/
kenjiArai	0:5b88d5760320	1281	if( ( ret = mbedtls_x509_get_alg( &p, end, &sig_oid2, &sig_params2 ) ) != 0 )
kenjiArai	0:5b88d5760320	1282	{
kenjiArai	0:5b88d5760320	1283	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1284	return( ret );
kenjiArai	0:5b88d5760320	1285	}
kenjiArai	0:5b88d5760320	1286
kenjiArai	0:5b88d5760320	1287	if( crt->sig_oid.len != sig_oid2.len \|\|
kenjiArai	0:5b88d5760320	1288	memcmp( crt->sig_oid.p, sig_oid2.p, crt->sig_oid.len ) != 0 \|\|
kenjiArai	0:5b88d5760320	1289	sig_params1.len != sig_params2.len \|\|
kenjiArai	0:5b88d5760320	1290	( sig_params1.len != 0 &&
kenjiArai	0:5b88d5760320	1291	memcmp( sig_params1.p, sig_params2.p, sig_params1.len ) != 0 ) )
kenjiArai	0:5b88d5760320	1292	{
kenjiArai	0:5b88d5760320	1293	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1294	return( MBEDTLS_ERR_X509_SIG_MISMATCH );
kenjiArai	0:5b88d5760320	1295	}
kenjiArai	0:5b88d5760320	1296
kenjiArai	0:5b88d5760320	1297	if( ( ret = mbedtls_x509_get_sig( &p, end, &crt->sig ) ) != 0 )
kenjiArai	0:5b88d5760320	1298	{
kenjiArai	0:5b88d5760320	1299	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1300	return( ret );
kenjiArai	0:5b88d5760320	1301	}
kenjiArai	0:5b88d5760320	1302
kenjiArai	0:5b88d5760320	1303	if( p != end )
kenjiArai	0:5b88d5760320	1304	{
kenjiArai	0:5b88d5760320	1305	mbedtls_x509_crt_free( crt );
kenjiArai	0:5b88d5760320	1306	return( MBEDTLS_ERR_X509_INVALID_FORMAT +
kenjiArai	0:5b88d5760320	1307	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	1308	}
kenjiArai	0:5b88d5760320	1309
kenjiArai	0:5b88d5760320	1310	return( 0 );
kenjiArai	0:5b88d5760320	1311	}
kenjiArai	0:5b88d5760320	1312
kenjiArai	0:5b88d5760320	1313	/*
kenjiArai	0:5b88d5760320	1314	* Parse one X.509 certificate in DER format from a buffer and add them to a
kenjiArai	0:5b88d5760320	1315	* chained list
kenjiArai	0:5b88d5760320	1316	*/
kenjiArai	0:5b88d5760320	1317	static int mbedtls_x509_crt_parse_der_internal( mbedtls_x509_crt *chain,
kenjiArai	0:5b88d5760320	1318	const unsigned char *buf,
kenjiArai	0:5b88d5760320	1319	size_t buflen,
kenjiArai	0:5b88d5760320	1320	int make_copy )
kenjiArai	0:5b88d5760320	1321	{
kenjiArai	0:5b88d5760320	1322	int ret;
kenjiArai	0:5b88d5760320	1323	mbedtls_x509_crt crt = chain, prev = NULL;
kenjiArai	0:5b88d5760320	1324
kenjiArai	0:5b88d5760320	1325	/*
kenjiArai	0:5b88d5760320	1326	* Check for valid input
kenjiArai	0:5b88d5760320	1327	*/
kenjiArai	0:5b88d5760320	1328	if( crt == NULL \|\| buf == NULL )
kenjiArai	0:5b88d5760320	1329	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
kenjiArai	0:5b88d5760320	1330
kenjiArai	0:5b88d5760320	1331	while( crt->version != 0 && crt->next != NULL )
kenjiArai	0:5b88d5760320	1332	{
kenjiArai	0:5b88d5760320	1333	prev = crt;
kenjiArai	0:5b88d5760320	1334	crt = crt->next;
kenjiArai	0:5b88d5760320	1335	}
kenjiArai	0:5b88d5760320	1336
kenjiArai	0:5b88d5760320	1337	/*
kenjiArai	0:5b88d5760320	1338	* Add new certificate on the end of the chain if needed.
kenjiArai	0:5b88d5760320	1339	*/
kenjiArai	0:5b88d5760320	1340	if( crt->version != 0 && crt->next == NULL )
kenjiArai	0:5b88d5760320	1341	{
kenjiArai	0:5b88d5760320	1342	crt->next = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );
kenjiArai	0:5b88d5760320	1343
kenjiArai	0:5b88d5760320	1344	if( crt->next == NULL )
kenjiArai	0:5b88d5760320	1345	return( MBEDTLS_ERR_X509_ALLOC_FAILED );
kenjiArai	0:5b88d5760320	1346
kenjiArai	0:5b88d5760320	1347	prev = crt;
kenjiArai	0:5b88d5760320	1348	mbedtls_x509_crt_init( crt->next );
kenjiArai	0:5b88d5760320	1349	crt = crt->next;
kenjiArai	0:5b88d5760320	1350	}
kenjiArai	0:5b88d5760320	1351
kenjiArai	0:5b88d5760320	1352	if( ( ret = x509_crt_parse_der_core( crt, buf, buflen, make_copy ) ) != 0 )
kenjiArai	0:5b88d5760320	1353	{
kenjiArai	0:5b88d5760320	1354	if( prev )
kenjiArai	0:5b88d5760320	1355	prev->next = NULL;
kenjiArai	0:5b88d5760320	1356
kenjiArai	0:5b88d5760320	1357	if( crt != chain )
kenjiArai	0:5b88d5760320	1358	mbedtls_free( crt );
kenjiArai	0:5b88d5760320	1359
kenjiArai	0:5b88d5760320	1360	return( ret );
kenjiArai	0:5b88d5760320	1361	}
kenjiArai	0:5b88d5760320	1362
kenjiArai	0:5b88d5760320	1363	return( 0 );
kenjiArai	0:5b88d5760320	1364	}
kenjiArai	0:5b88d5760320	1365
kenjiArai	0:5b88d5760320	1366	int mbedtls_x509_crt_parse_der_nocopy( mbedtls_x509_crt *chain,
kenjiArai	0:5b88d5760320	1367	const unsigned char *buf,
kenjiArai	0:5b88d5760320	1368	size_t buflen )
kenjiArai	0:5b88d5760320	1369	{
kenjiArai	0:5b88d5760320	1370	return( mbedtls_x509_crt_parse_der_internal( chain, buf, buflen, 0 ) );
kenjiArai	0:5b88d5760320	1371	}
kenjiArai	0:5b88d5760320	1372
kenjiArai	0:5b88d5760320	1373	int mbedtls_x509_crt_parse_der( mbedtls_x509_crt *chain,
kenjiArai	0:5b88d5760320	1374	const unsigned char *buf,
kenjiArai	0:5b88d5760320	1375	size_t buflen )
kenjiArai	0:5b88d5760320	1376	{
kenjiArai	0:5b88d5760320	1377	return( mbedtls_x509_crt_parse_der_internal( chain, buf, buflen, 1 ) );
kenjiArai	0:5b88d5760320	1378	}
kenjiArai	0:5b88d5760320	1379
kenjiArai	0:5b88d5760320	1380	/*
kenjiArai	0:5b88d5760320	1381	* Parse one or more PEM certificates from a buffer and add them to the chained
kenjiArai	0:5b88d5760320	1382	* list
kenjiArai	0:5b88d5760320	1383	*/
kenjiArai	0:5b88d5760320	1384	int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain,
kenjiArai	0:5b88d5760320	1385	const unsigned char *buf,
kenjiArai	0:5b88d5760320	1386	size_t buflen )
kenjiArai	0:5b88d5760320	1387	{
kenjiArai	0:5b88d5760320	1388	#if defined(MBEDTLS_PEM_PARSE_C)
kenjiArai	0:5b88d5760320	1389	int success = 0, first_error = 0, total_failed = 0;
kenjiArai	0:5b88d5760320	1390	int buf_format = MBEDTLS_X509_FORMAT_DER;
kenjiArai	0:5b88d5760320	1391	#endif
kenjiArai	0:5b88d5760320	1392
kenjiArai	0:5b88d5760320	1393	/*
kenjiArai	0:5b88d5760320	1394	* Check for valid input
kenjiArai	0:5b88d5760320	1395	*/
kenjiArai	0:5b88d5760320	1396	if( chain == NULL \|\| buf == NULL )
kenjiArai	0:5b88d5760320	1397	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
kenjiArai	0:5b88d5760320	1398
kenjiArai	0:5b88d5760320	1399	/*
kenjiArai	0:5b88d5760320	1400	* Determine buffer content. Buffer contains either one DER certificate or
kenjiArai	0:5b88d5760320	1401	* one or more PEM certificates.
kenjiArai	0:5b88d5760320	1402	*/
kenjiArai	0:5b88d5760320	1403	#if defined(MBEDTLS_PEM_PARSE_C)
kenjiArai	0:5b88d5760320	1404	if( buflen != 0 && buf[buflen - 1] == '\0' &&
kenjiArai	0:5b88d5760320	1405	strstr( (const char *) buf, "-----BEGIN CERTIFICATE-----" ) != NULL )
kenjiArai	0:5b88d5760320	1406	{
kenjiArai	0:5b88d5760320	1407	buf_format = MBEDTLS_X509_FORMAT_PEM;
kenjiArai	0:5b88d5760320	1408	}
kenjiArai	0:5b88d5760320	1409
kenjiArai	0:5b88d5760320	1410	if( buf_format == MBEDTLS_X509_FORMAT_DER )
kenjiArai	0:5b88d5760320	1411	return mbedtls_x509_crt_parse_der( chain, buf, buflen );
kenjiArai	0:5b88d5760320	1412	#else
kenjiArai	0:5b88d5760320	1413	return mbedtls_x509_crt_parse_der( chain, buf, buflen );
kenjiArai	0:5b88d5760320	1414	#endif
kenjiArai	0:5b88d5760320	1415
kenjiArai	0:5b88d5760320	1416	#if defined(MBEDTLS_PEM_PARSE_C)
kenjiArai	0:5b88d5760320	1417	if( buf_format == MBEDTLS_X509_FORMAT_PEM )
kenjiArai	0:5b88d5760320	1418	{
kenjiArai	0:5b88d5760320	1419	int ret;
kenjiArai	0:5b88d5760320	1420	mbedtls_pem_context pem;
kenjiArai	0:5b88d5760320	1421
kenjiArai	0:5b88d5760320	1422	/* 1 rather than 0 since the terminating NULL byte is counted in */
kenjiArai	0:5b88d5760320	1423	while( buflen > 1 )
kenjiArai	0:5b88d5760320	1424	{
kenjiArai	0:5b88d5760320	1425	size_t use_len;
kenjiArai	0:5b88d5760320	1426	mbedtls_pem_init( &pem );
kenjiArai	0:5b88d5760320	1427
kenjiArai	0:5b88d5760320	1428	/* If we get there, we know the string is null-terminated */
kenjiArai	0:5b88d5760320	1429	ret = mbedtls_pem_read_buffer( &pem,
kenjiArai	0:5b88d5760320	1430	"-----BEGIN CERTIFICATE-----",
kenjiArai	0:5b88d5760320	1431	"-----END CERTIFICATE-----",
kenjiArai	0:5b88d5760320	1432	buf, NULL, 0, &use_len );
kenjiArai	0:5b88d5760320	1433
kenjiArai	0:5b88d5760320	1434	if( ret == 0 )
kenjiArai	0:5b88d5760320	1435	{
kenjiArai	0:5b88d5760320	1436	/*
kenjiArai	0:5b88d5760320	1437	* Was PEM encoded
kenjiArai	0:5b88d5760320	1438	*/
kenjiArai	0:5b88d5760320	1439	buflen -= use_len;
kenjiArai	0:5b88d5760320	1440	buf += use_len;
kenjiArai	0:5b88d5760320	1441	}
kenjiArai	0:5b88d5760320	1442	else if( ret == MBEDTLS_ERR_PEM_BAD_INPUT_DATA )
kenjiArai	0:5b88d5760320	1443	{
kenjiArai	0:5b88d5760320	1444	return( ret );
kenjiArai	0:5b88d5760320	1445	}
kenjiArai	0:5b88d5760320	1446	else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
kenjiArai	0:5b88d5760320	1447	{
kenjiArai	0:5b88d5760320	1448	mbedtls_pem_free( &pem );
kenjiArai	0:5b88d5760320	1449
kenjiArai	0:5b88d5760320	1450	/*
kenjiArai	0:5b88d5760320	1451	* PEM header and footer were found
kenjiArai	0:5b88d5760320	1452	*/
kenjiArai	0:5b88d5760320	1453	buflen -= use_len;
kenjiArai	0:5b88d5760320	1454	buf += use_len;
kenjiArai	0:5b88d5760320	1455
kenjiArai	0:5b88d5760320	1456	if( first_error == 0 )
kenjiArai	0:5b88d5760320	1457	first_error = ret;
kenjiArai	0:5b88d5760320	1458
kenjiArai	0:5b88d5760320	1459	total_failed++;
kenjiArai	0:5b88d5760320	1460	continue;
kenjiArai	0:5b88d5760320	1461	}
kenjiArai	0:5b88d5760320	1462	else
kenjiArai	0:5b88d5760320	1463	break;
kenjiArai	0:5b88d5760320	1464
kenjiArai	0:5b88d5760320	1465	ret = mbedtls_x509_crt_parse_der( chain, pem.buf, pem.buflen );
kenjiArai	0:5b88d5760320	1466
kenjiArai	0:5b88d5760320	1467	mbedtls_pem_free( &pem );
kenjiArai	0:5b88d5760320	1468
kenjiArai	0:5b88d5760320	1469	if( ret != 0 )
kenjiArai	0:5b88d5760320	1470	{
kenjiArai	0:5b88d5760320	1471	/*
kenjiArai	0:5b88d5760320	1472	* Quit parsing on a memory error
kenjiArai	0:5b88d5760320	1473	*/
kenjiArai	0:5b88d5760320	1474	if( ret == MBEDTLS_ERR_X509_ALLOC_FAILED )
kenjiArai	0:5b88d5760320	1475	return( ret );
kenjiArai	0:5b88d5760320	1476
kenjiArai	0:5b88d5760320	1477	if( first_error == 0 )
kenjiArai	0:5b88d5760320	1478	first_error = ret;
kenjiArai	0:5b88d5760320	1479
kenjiArai	0:5b88d5760320	1480	total_failed++;
kenjiArai	0:5b88d5760320	1481	continue;
kenjiArai	0:5b88d5760320	1482	}
kenjiArai	0:5b88d5760320	1483
kenjiArai	0:5b88d5760320	1484	success = 1;
kenjiArai	0:5b88d5760320	1485	}
kenjiArai	0:5b88d5760320	1486	}
kenjiArai	0:5b88d5760320	1487
kenjiArai	0:5b88d5760320	1488	if( success )
kenjiArai	0:5b88d5760320	1489	return( total_failed );
kenjiArai	0:5b88d5760320	1490	else if( first_error )
kenjiArai	0:5b88d5760320	1491	return( first_error );
kenjiArai	0:5b88d5760320	1492	else
kenjiArai	0:5b88d5760320	1493	return( MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT );
kenjiArai	0:5b88d5760320	1494	#endif /* MBEDTLS_PEM_PARSE_C */
kenjiArai	0:5b88d5760320	1495	}
kenjiArai	0:5b88d5760320	1496
kenjiArai	0:5b88d5760320	1497	#if defined(MBEDTLS_FS_IO)
kenjiArai	0:5b88d5760320	1498	/*
kenjiArai	0:5b88d5760320	1499	* Load one or more certificates and add them to the chained list
kenjiArai	0:5b88d5760320	1500	*/
kenjiArai	0:5b88d5760320	1501	int mbedtls_x509_crt_parse_file( mbedtls_x509_crt chain, const char path )
kenjiArai	0:5b88d5760320	1502	{
kenjiArai	0:5b88d5760320	1503	int ret;
kenjiArai	0:5b88d5760320	1504	size_t n;
kenjiArai	0:5b88d5760320	1505	unsigned char *buf;
kenjiArai	0:5b88d5760320	1506
kenjiArai	0:5b88d5760320	1507	if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
kenjiArai	0:5b88d5760320	1508	return( ret );
kenjiArai	0:5b88d5760320	1509
kenjiArai	0:5b88d5760320	1510	ret = mbedtls_x509_crt_parse( chain, buf, n );
kenjiArai	0:5b88d5760320	1511
kenjiArai	0:5b88d5760320	1512	mbedtls_platform_zeroize( buf, n );
kenjiArai	0:5b88d5760320	1513	mbedtls_free( buf );
kenjiArai	0:5b88d5760320	1514
kenjiArai	0:5b88d5760320	1515	return( ret );
kenjiArai	0:5b88d5760320	1516	}
kenjiArai	0:5b88d5760320	1517
kenjiArai	0:5b88d5760320	1518	int mbedtls_x509_crt_parse_path( mbedtls_x509_crt chain, const char path )
kenjiArai	0:5b88d5760320	1519	{
kenjiArai	0:5b88d5760320	1520	int ret = 0;
kenjiArai	0:5b88d5760320	1521	#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
kenjiArai	0:5b88d5760320	1522	int w_ret;
kenjiArai	0:5b88d5760320	1523	WCHAR szDir[MAX_PATH];
kenjiArai	0:5b88d5760320	1524	char filename[MAX_PATH];
kenjiArai	0:5b88d5760320	1525	char *p;
kenjiArai	0:5b88d5760320	1526	size_t len = strlen( path );
kenjiArai	0:5b88d5760320	1527
kenjiArai	0:5b88d5760320	1528	WIN32_FIND_DATAW file_data;
kenjiArai	0:5b88d5760320	1529	HANDLE hFind;
kenjiArai	0:5b88d5760320	1530
kenjiArai	0:5b88d5760320	1531	if( len > MAX_PATH - 3 )
kenjiArai	0:5b88d5760320	1532	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
kenjiArai	0:5b88d5760320	1533
kenjiArai	0:5b88d5760320	1534	memset( szDir, 0, sizeof(szDir) );
kenjiArai	0:5b88d5760320	1535	memset( filename, 0, MAX_PATH );
kenjiArai	0:5b88d5760320	1536	memcpy( filename, path, len );
kenjiArai	0:5b88d5760320	1537	filename[len++] = '\\';
kenjiArai	0:5b88d5760320	1538	p = filename + len;
kenjiArai	0:5b88d5760320	1539	filename[len++] = '*';
kenjiArai	0:5b88d5760320	1540
kenjiArai	0:5b88d5760320	1541	w_ret = MultiByteToWideChar( CP_ACP, 0, filename, (int)len, szDir,
kenjiArai	0:5b88d5760320	1542	MAX_PATH - 3 );
kenjiArai	0:5b88d5760320	1543	if( w_ret == 0 )
kenjiArai	0:5b88d5760320	1544	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
kenjiArai	0:5b88d5760320	1545
kenjiArai	0:5b88d5760320	1546	hFind = FindFirstFileW( szDir, &file_data );
kenjiArai	0:5b88d5760320	1547	if( hFind == INVALID_HANDLE_VALUE )
kenjiArai	0:5b88d5760320	1548	return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
kenjiArai	0:5b88d5760320	1549
kenjiArai	0:5b88d5760320	1550	len = MAX_PATH - len;
kenjiArai	0:5b88d5760320	1551	do
kenjiArai	0:5b88d5760320	1552	{
kenjiArai	0:5b88d5760320	1553	memset( p, 0, len );
kenjiArai	0:5b88d5760320	1554
kenjiArai	0:5b88d5760320	1555	if( file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
kenjiArai	0:5b88d5760320	1556	continue;
kenjiArai	0:5b88d5760320	1557
kenjiArai	0:5b88d5760320	1558	w_ret = WideCharToMultiByte( CP_ACP, 0, file_data.cFileName,
kenjiArai	0:5b88d5760320	1559	lstrlenW( file_data.cFileName ),
kenjiArai	0:5b88d5760320	1560	p, (int) len - 1,
kenjiArai	0:5b88d5760320	1561	NULL, NULL );
kenjiArai	0:5b88d5760320	1562	if( w_ret == 0 )
kenjiArai	0:5b88d5760320	1563	{
kenjiArai	0:5b88d5760320	1564	ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
kenjiArai	0:5b88d5760320	1565	goto cleanup;
kenjiArai	0:5b88d5760320	1566	}
kenjiArai	0:5b88d5760320	1567
kenjiArai	0:5b88d5760320	1568	w_ret = mbedtls_x509_crt_parse_file( chain, filename );
kenjiArai	0:5b88d5760320	1569	if( w_ret < 0 )
kenjiArai	0:5b88d5760320	1570	ret++;
kenjiArai	0:5b88d5760320	1571	else
kenjiArai	0:5b88d5760320	1572	ret += w_ret;
kenjiArai	0:5b88d5760320	1573	}
kenjiArai	0:5b88d5760320	1574	while( FindNextFileW( hFind, &file_data ) != 0 );
kenjiArai	0:5b88d5760320	1575
kenjiArai	0:5b88d5760320	1576	if( GetLastError() != ERROR_NO_MORE_FILES )
kenjiArai	0:5b88d5760320	1577	ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
kenjiArai	0:5b88d5760320	1578
kenjiArai	0:5b88d5760320	1579	cleanup:
kenjiArai	0:5b88d5760320	1580	FindClose( hFind );
kenjiArai	0:5b88d5760320	1581	#else /* _WIN32 */
kenjiArai	0:5b88d5760320	1582	int t_ret;
kenjiArai	0:5b88d5760320	1583	int snp_ret;
kenjiArai	0:5b88d5760320	1584	struct stat sb;
kenjiArai	0:5b88d5760320	1585	struct dirent *entry;
kenjiArai	0:5b88d5760320	1586	char entry_name[MBEDTLS_X509_MAX_FILE_PATH_LEN];
kenjiArai	0:5b88d5760320	1587	DIR *dir = opendir( path );
kenjiArai	0:5b88d5760320	1588
kenjiArai	0:5b88d5760320	1589	if( dir == NULL )
kenjiArai	0:5b88d5760320	1590	return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
kenjiArai	0:5b88d5760320	1591
kenjiArai	0:5b88d5760320	1592	#if defined(MBEDTLS_THREADING_C)
kenjiArai	0:5b88d5760320	1593	if( ( ret = mbedtls_mutex_lock( &mbedtls_threading_readdir_mutex ) ) != 0 )
kenjiArai	0:5b88d5760320	1594	{
kenjiArai	0:5b88d5760320	1595	closedir( dir );
kenjiArai	0:5b88d5760320	1596	return( ret );
kenjiArai	0:5b88d5760320	1597	}
kenjiArai	0:5b88d5760320	1598	#endif /* MBEDTLS_THREADING_C */
kenjiArai	0:5b88d5760320	1599
kenjiArai	0:5b88d5760320	1600	while( ( entry = readdir( dir ) ) != NULL )
kenjiArai	0:5b88d5760320	1601	{
kenjiArai	0:5b88d5760320	1602	snp_ret = mbedtls_snprintf( entry_name, sizeof entry_name,
kenjiArai	0:5b88d5760320	1603	"%s/%s", path, entry->d_name );
kenjiArai	0:5b88d5760320	1604
kenjiArai	0:5b88d5760320	1605	if( snp_ret < 0 \|\| (size_t)snp_ret >= sizeof entry_name )
kenjiArai	0:5b88d5760320	1606	{
kenjiArai	0:5b88d5760320	1607	ret = MBEDTLS_ERR_X509_BUFFER_TOO_SMALL;
kenjiArai	0:5b88d5760320	1608	goto cleanup;
kenjiArai	0:5b88d5760320	1609	}
kenjiArai	0:5b88d5760320	1610	else if( stat( entry_name, &sb ) == -1 )
kenjiArai	0:5b88d5760320	1611	{
kenjiArai	0:5b88d5760320	1612	ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
kenjiArai	0:5b88d5760320	1613	goto cleanup;
kenjiArai	0:5b88d5760320	1614	}
kenjiArai	0:5b88d5760320	1615
kenjiArai	0:5b88d5760320	1616	if( !S_ISREG( sb.st_mode ) )
kenjiArai	0:5b88d5760320	1617	continue;
kenjiArai	0:5b88d5760320	1618
kenjiArai	0:5b88d5760320	1619	// Ignore parse errors
kenjiArai	0:5b88d5760320	1620	//
kenjiArai	0:5b88d5760320	1621	t_ret = mbedtls_x509_crt_parse_file( chain, entry_name );
kenjiArai	0:5b88d5760320	1622	if( t_ret < 0 )
kenjiArai	0:5b88d5760320	1623	ret++;
kenjiArai	0:5b88d5760320	1624	else
kenjiArai	0:5b88d5760320	1625	ret += t_ret;
kenjiArai	0:5b88d5760320	1626	}
kenjiArai	0:5b88d5760320	1627
kenjiArai	0:5b88d5760320	1628	cleanup:
kenjiArai	0:5b88d5760320	1629	closedir( dir );
kenjiArai	0:5b88d5760320	1630
kenjiArai	0:5b88d5760320	1631	#if defined(MBEDTLS_THREADING_C)
kenjiArai	0:5b88d5760320	1632	if( mbedtls_mutex_unlock( &mbedtls_threading_readdir_mutex ) != 0 )
kenjiArai	0:5b88d5760320	1633	ret = MBEDTLS_ERR_THREADING_MUTEX_ERROR;
kenjiArai	0:5b88d5760320	1634	#endif /* MBEDTLS_THREADING_C */
kenjiArai	0:5b88d5760320	1635
kenjiArai	0:5b88d5760320	1636	#endif /* _WIN32 */
kenjiArai	0:5b88d5760320	1637
kenjiArai	0:5b88d5760320	1638	return( ret );
kenjiArai	0:5b88d5760320	1639	}
kenjiArai	0:5b88d5760320	1640	#endif /* MBEDTLS_FS_IO */
kenjiArai	0:5b88d5760320	1641
kenjiArai	0:5b88d5760320	1642	/*
kenjiArai	0:5b88d5760320	1643	* OtherName ::= SEQUENCE {
kenjiArai	0:5b88d5760320	1644	* type-id OBJECT IDENTIFIER,
kenjiArai	0:5b88d5760320	1645	* value [0] EXPLICIT ANY DEFINED BY type-id }
kenjiArai	0:5b88d5760320	1646	*
kenjiArai	0:5b88d5760320	1647	* HardwareModuleName ::= SEQUENCE {
kenjiArai	0:5b88d5760320	1648	* hwType OBJECT IDENTIFIER,
kenjiArai	0:5b88d5760320	1649	* hwSerialNum OCTET STRING }
kenjiArai	0:5b88d5760320	1650	*
kenjiArai	0:5b88d5760320	1651	* NOTE: we currently only parse and use otherName of type HwModuleName,
kenjiArai	0:5b88d5760320	1652	* as defined in RFC 4108.
kenjiArai	0:5b88d5760320	1653	*/
kenjiArai	0:5b88d5760320	1654	static int x509_get_other_name( const mbedtls_x509_buf *subject_alt_name,
kenjiArai	0:5b88d5760320	1655	mbedtls_x509_san_other_name *other_name )
kenjiArai	0:5b88d5760320	1656	{
kenjiArai	0:5b88d5760320	1657	int ret = 0;
kenjiArai	0:5b88d5760320	1658	size_t len;
kenjiArai	0:5b88d5760320	1659	unsigned char *p = subject_alt_name->p;
kenjiArai	0:5b88d5760320	1660	const unsigned char *end = p + subject_alt_name->len;
kenjiArai	0:5b88d5760320	1661	mbedtls_x509_buf cur_oid;
kenjiArai	0:5b88d5760320	1662
kenjiArai	0:5b88d5760320	1663	if( ( subject_alt_name->tag &
kenjiArai	0:5b88d5760320	1664	( MBEDTLS_ASN1_TAG_CLASS_MASK \| MBEDTLS_ASN1_TAG_VALUE_MASK ) ) !=
kenjiArai	0:5b88d5760320	1665	( MBEDTLS_ASN1_CONTEXT_SPECIFIC \| MBEDTLS_X509_SAN_OTHER_NAME ) )
kenjiArai	0:5b88d5760320	1666	{
kenjiArai	0:5b88d5760320	1667	/*
kenjiArai	0:5b88d5760320	1668	* The given subject alternative name is not of type "othername".
kenjiArai	0:5b88d5760320	1669	*/
kenjiArai	0:5b88d5760320	1670	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
kenjiArai	0:5b88d5760320	1671	}
kenjiArai	0:5b88d5760320	1672
kenjiArai	0:5b88d5760320	1673	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
kenjiArai	0:5b88d5760320	1674	MBEDTLS_ASN1_OID ) ) != 0 )
kenjiArai	0:5b88d5760320	1675	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	1676
kenjiArai	0:5b88d5760320	1677	cur_oid.tag = MBEDTLS_ASN1_OID;
kenjiArai	0:5b88d5760320	1678	cur_oid.p = p;
kenjiArai	0:5b88d5760320	1679	cur_oid.len = len;
kenjiArai	0:5b88d5760320	1680
kenjiArai	0:5b88d5760320	1681	/*
kenjiArai	0:5b88d5760320	1682	* Only HwModuleName is currently supported.
kenjiArai	0:5b88d5760320	1683	*/
kenjiArai	0:5b88d5760320	1684	if( MBEDTLS_OID_CMP( MBEDTLS_OID_ON_HW_MODULE_NAME, &cur_oid ) != 0 )
kenjiArai	0:5b88d5760320	1685	{
kenjiArai	0:5b88d5760320	1686	return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
kenjiArai	0:5b88d5760320	1687	}
kenjiArai	0:5b88d5760320	1688
kenjiArai	0:5b88d5760320	1689	if( p + len >= end )
kenjiArai	0:5b88d5760320	1690	{
kenjiArai	0:5b88d5760320	1691	mbedtls_platform_zeroize( other_name, sizeof( other_name ) );
kenjiArai	0:5b88d5760320	1692	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	1693	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	1694	}
kenjiArai	0:5b88d5760320	1695	p += len;
kenjiArai	0:5b88d5760320	1696	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
kenjiArai	0:5b88d5760320	1697	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_CONTEXT_SPECIFIC ) ) != 0 )
kenjiArai	0:5b88d5760320	1698	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	1699
kenjiArai	0:5b88d5760320	1700	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
kenjiArai	0:5b88d5760320	1701	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
kenjiArai	0:5b88d5760320	1702	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	1703
kenjiArai	0:5b88d5760320	1704	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len, MBEDTLS_ASN1_OID ) ) != 0 )
kenjiArai	0:5b88d5760320	1705	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	1706
kenjiArai	0:5b88d5760320	1707	other_name->value.hardware_module_name.oid.tag = MBEDTLS_ASN1_OID;
kenjiArai	0:5b88d5760320	1708	other_name->value.hardware_module_name.oid.p = p;
kenjiArai	0:5b88d5760320	1709	other_name->value.hardware_module_name.oid.len = len;
kenjiArai	0:5b88d5760320	1710
kenjiArai	0:5b88d5760320	1711	if( p + len >= end )
kenjiArai	0:5b88d5760320	1712	{
kenjiArai	0:5b88d5760320	1713	mbedtls_platform_zeroize( other_name, sizeof( other_name ) );
kenjiArai	0:5b88d5760320	1714	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	1715	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	1716	}
kenjiArai	0:5b88d5760320	1717	p += len;
kenjiArai	0:5b88d5760320	1718	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
kenjiArai	0:5b88d5760320	1719	MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
kenjiArai	0:5b88d5760320	1720	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
kenjiArai	0:5b88d5760320	1721
kenjiArai	0:5b88d5760320	1722	other_name->value.hardware_module_name.val.tag = MBEDTLS_ASN1_OCTET_STRING;
kenjiArai	0:5b88d5760320	1723	other_name->value.hardware_module_name.val.p = p;
kenjiArai	0:5b88d5760320	1724	other_name->value.hardware_module_name.val.len = len;
kenjiArai	0:5b88d5760320	1725	p += len;
kenjiArai	0:5b88d5760320	1726	if( p != end )
kenjiArai	0:5b88d5760320	1727	{
kenjiArai	0:5b88d5760320	1728	mbedtls_platform_zeroize( other_name,
kenjiArai	0:5b88d5760320	1729	sizeof( other_name ) );
kenjiArai	0:5b88d5760320	1730	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
kenjiArai	0:5b88d5760320	1731	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
kenjiArai	0:5b88d5760320	1732	}
kenjiArai	0:5b88d5760320	1733	return( 0 );
kenjiArai	0:5b88d5760320	1734	}
kenjiArai	0:5b88d5760320	1735
kenjiArai	0:5b88d5760320	1736	static int x509_info_subject_alt_name( char *buf, size_t size,
kenjiArai	0:5b88d5760320	1737	const mbedtls_x509_sequence
kenjiArai	0:5b88d5760320	1738	*subject_alt_name,
kenjiArai	0:5b88d5760320	1739	const char *prefix )
kenjiArai	0:5b88d5760320	1740	{
kenjiArai	0:5b88d5760320	1741	int ret;
kenjiArai	0:5b88d5760320	1742	size_t n = *size;
kenjiArai	0:5b88d5760320	1743	char p = buf;
kenjiArai	0:5b88d5760320	1744	const mbedtls_x509_sequence *cur = subject_alt_name;
kenjiArai	0:5b88d5760320	1745	mbedtls_x509_subject_alternative_name san;
kenjiArai	0:5b88d5760320	1746	int parse_ret;
kenjiArai	0:5b88d5760320	1747
kenjiArai	0:5b88d5760320	1748	while( cur != NULL )
kenjiArai	0:5b88d5760320	1749	{
kenjiArai	0:5b88d5760320	1750	memset( &san, 0, sizeof( san ) );
kenjiArai	0:5b88d5760320	1751	parse_ret = mbedtls_x509_parse_subject_alt_name( &cur->buf, &san );
kenjiArai	0:5b88d5760320	1752	if( parse_ret != 0 )
kenjiArai	0:5b88d5760320	1753	{
kenjiArai	0:5b88d5760320	1754	if( parse_ret == MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE )
kenjiArai	0:5b88d5760320	1755	{
kenjiArai	0:5b88d5760320	1756	ret = mbedtls_snprintf( p, n, "\n%s <unsupported>", prefix );
kenjiArai	0:5b88d5760320	1757	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1758	}
kenjiArai	0:5b88d5760320	1759	else
kenjiArai	0:5b88d5760320	1760	{
kenjiArai	0:5b88d5760320	1761	ret = mbedtls_snprintf( p, n, "\n%s <malformed>", prefix );
kenjiArai	0:5b88d5760320	1762	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1763	}
kenjiArai	0:5b88d5760320	1764	cur = cur->next;
kenjiArai	0:5b88d5760320	1765	continue;
kenjiArai	0:5b88d5760320	1766	}
kenjiArai	0:5b88d5760320	1767
kenjiArai	0:5b88d5760320	1768	switch( san.type )
kenjiArai	0:5b88d5760320	1769	{
kenjiArai	0:5b88d5760320	1770	/*
kenjiArai	0:5b88d5760320	1771	* otherName
kenjiArai	0:5b88d5760320	1772	*/
kenjiArai	0:5b88d5760320	1773	case MBEDTLS_X509_SAN_OTHER_NAME:
kenjiArai	0:5b88d5760320	1774	{
kenjiArai	0:5b88d5760320	1775	mbedtls_x509_san_other_name *other_name = &san.san.other_name;
kenjiArai	0:5b88d5760320	1776
kenjiArai	0:5b88d5760320	1777	ret = mbedtls_snprintf( p, n, "\n%s otherName :", prefix );
kenjiArai	0:5b88d5760320	1778	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1779
kenjiArai	0:5b88d5760320	1780	if( MBEDTLS_OID_CMP( MBEDTLS_OID_ON_HW_MODULE_NAME,
kenjiArai	0:5b88d5760320	1781	&other_name->value.hardware_module_name.oid ) != 0 )
kenjiArai	0:5b88d5760320	1782	{
kenjiArai	0:5b88d5760320	1783	ret = mbedtls_snprintf( p, n, "\n%s hardware module name :", prefix );
kenjiArai	0:5b88d5760320	1784	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1785	ret = mbedtls_snprintf( p, n, "\n%s hardware type : ", prefix );
kenjiArai	0:5b88d5760320	1786	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1787
kenjiArai	0:5b88d5760320	1788	ret = mbedtls_oid_get_numeric_string( p, n, &other_name->value.hardware_module_name.oid );
kenjiArai	0:5b88d5760320	1789	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1790
kenjiArai	0:5b88d5760320	1791	ret = mbedtls_snprintf( p, n, "\n%s hardware serial number : ", prefix );
kenjiArai	0:5b88d5760320	1792	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1793
kenjiArai	0:5b88d5760320	1794	if( other_name->value.hardware_module_name.val.len >= n )
kenjiArai	0:5b88d5760320	1795	{
kenjiArai	0:5b88d5760320	1796	*p = '\0';
kenjiArai	0:5b88d5760320	1797	return( MBEDTLS_ERR_X509_BUFFER_TOO_SMALL );
kenjiArai	0:5b88d5760320	1798	}
kenjiArai	0:5b88d5760320	1799
kenjiArai	0:5b88d5760320	1800	memcpy( p, other_name->value.hardware_module_name.val.p,
kenjiArai	0:5b88d5760320	1801	other_name->value.hardware_module_name.val.len );
kenjiArai	0:5b88d5760320	1802	p += other_name->value.hardware_module_name.val.len;
kenjiArai	0:5b88d5760320	1803
kenjiArai	0:5b88d5760320	1804	n -= other_name->value.hardware_module_name.val.len;
kenjiArai	0:5b88d5760320	1805
kenjiArai	0:5b88d5760320	1806	}/* MBEDTLS_OID_ON_HW_MODULE_NAME */
kenjiArai	0:5b88d5760320	1807	}
kenjiArai	0:5b88d5760320	1808	break;
kenjiArai	0:5b88d5760320	1809
kenjiArai	0:5b88d5760320	1810	/*
kenjiArai	0:5b88d5760320	1811	* dNSName
kenjiArai	0:5b88d5760320	1812	*/
kenjiArai	0:5b88d5760320	1813	case MBEDTLS_X509_SAN_DNS_NAME:
kenjiArai	0:5b88d5760320	1814	{
kenjiArai	0:5b88d5760320	1815	ret = mbedtls_snprintf( p, n, "\n%s dNSName : ", prefix );
kenjiArai	0:5b88d5760320	1816	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1817	if( san.san.unstructured_name.len >= n )
kenjiArai	0:5b88d5760320	1818	{
kenjiArai	0:5b88d5760320	1819	*p = '\0';
kenjiArai	0:5b88d5760320	1820	return( MBEDTLS_ERR_X509_BUFFER_TOO_SMALL );
kenjiArai	0:5b88d5760320	1821	}
kenjiArai	0:5b88d5760320	1822
kenjiArai	0:5b88d5760320	1823	memcpy( p, san.san.unstructured_name.p, san.san.unstructured_name.len );
kenjiArai	0:5b88d5760320	1824	p += san.san.unstructured_name.len;
kenjiArai	0:5b88d5760320	1825	n -= san.san.unstructured_name.len;
kenjiArai	0:5b88d5760320	1826	}
kenjiArai	0:5b88d5760320	1827	break;
kenjiArai	0:5b88d5760320	1828
kenjiArai	0:5b88d5760320	1829	/*
kenjiArai	0:5b88d5760320	1830	* Type not supported, skip item.
kenjiArai	0:5b88d5760320	1831	*/
kenjiArai	0:5b88d5760320	1832	default:
kenjiArai	0:5b88d5760320	1833	ret = mbedtls_snprintf( p, n, "\n%s <unsupported>", prefix );
kenjiArai	0:5b88d5760320	1834	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1835	break;
kenjiArai	0:5b88d5760320	1836	}
kenjiArai	0:5b88d5760320	1837
kenjiArai	0:5b88d5760320	1838	cur = cur->next;
kenjiArai	0:5b88d5760320	1839	}
kenjiArai	0:5b88d5760320	1840
kenjiArai	0:5b88d5760320	1841	*p = '\0';
kenjiArai	0:5b88d5760320	1842
kenjiArai	0:5b88d5760320	1843	*size = n;
kenjiArai	0:5b88d5760320	1844	*buf = p;
kenjiArai	0:5b88d5760320	1845
kenjiArai	0:5b88d5760320	1846	return( 0 );
kenjiArai	0:5b88d5760320	1847	}
kenjiArai	0:5b88d5760320	1848
kenjiArai	0:5b88d5760320	1849	int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf,
kenjiArai	0:5b88d5760320	1850	mbedtls_x509_subject_alternative_name *san )
kenjiArai	0:5b88d5760320	1851	{
kenjiArai	0:5b88d5760320	1852	int ret;
kenjiArai	0:5b88d5760320	1853	switch( san_buf->tag &
kenjiArai	0:5b88d5760320	1854	( MBEDTLS_ASN1_TAG_CLASS_MASK \|
kenjiArai	0:5b88d5760320	1855	MBEDTLS_ASN1_TAG_VALUE_MASK ) )
kenjiArai	0:5b88d5760320	1856	{
kenjiArai	0:5b88d5760320	1857	/*
kenjiArai	0:5b88d5760320	1858	* otherName
kenjiArai	0:5b88d5760320	1859	*/
kenjiArai	0:5b88d5760320	1860	case( MBEDTLS_ASN1_CONTEXT_SPECIFIC \| MBEDTLS_X509_SAN_OTHER_NAME ):
kenjiArai	0:5b88d5760320	1861	{
kenjiArai	0:5b88d5760320	1862	mbedtls_x509_san_other_name other_name;
kenjiArai	0:5b88d5760320	1863
kenjiArai	0:5b88d5760320	1864	ret = x509_get_other_name( san_buf, &other_name );
kenjiArai	0:5b88d5760320	1865	if( ret != 0 )
kenjiArai	0:5b88d5760320	1866	return( ret );
kenjiArai	0:5b88d5760320	1867
kenjiArai	0:5b88d5760320	1868	memset( san, 0, sizeof( mbedtls_x509_subject_alternative_name ) );
kenjiArai	0:5b88d5760320	1869	san->type = MBEDTLS_X509_SAN_OTHER_NAME;
kenjiArai	0:5b88d5760320	1870	memcpy( &san->san.other_name,
kenjiArai	0:5b88d5760320	1871	&other_name, sizeof( other_name ) );
kenjiArai	0:5b88d5760320	1872
kenjiArai	0:5b88d5760320	1873	}
kenjiArai	0:5b88d5760320	1874	break;
kenjiArai	0:5b88d5760320	1875
kenjiArai	0:5b88d5760320	1876	/*
kenjiArai	0:5b88d5760320	1877	* dNSName
kenjiArai	0:5b88d5760320	1878	*/
kenjiArai	0:5b88d5760320	1879	case( MBEDTLS_ASN1_CONTEXT_SPECIFIC \| MBEDTLS_X509_SAN_DNS_NAME ):
kenjiArai	0:5b88d5760320	1880	{
kenjiArai	0:5b88d5760320	1881	memset( san, 0, sizeof( mbedtls_x509_subject_alternative_name ) );
kenjiArai	0:5b88d5760320	1882	san->type = MBEDTLS_X509_SAN_DNS_NAME;
kenjiArai	0:5b88d5760320	1883
kenjiArai	0:5b88d5760320	1884	memcpy( &san->san.unstructured_name,
kenjiArai	0:5b88d5760320	1885	san_buf, sizeof( *san_buf ) );
kenjiArai	0:5b88d5760320	1886
kenjiArai	0:5b88d5760320	1887	}
kenjiArai	0:5b88d5760320	1888	break;
kenjiArai	0:5b88d5760320	1889
kenjiArai	0:5b88d5760320	1890	/*
kenjiArai	0:5b88d5760320	1891	* Type not supported
kenjiArai	0:5b88d5760320	1892	*/
kenjiArai	0:5b88d5760320	1893	default:
kenjiArai	0:5b88d5760320	1894	return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
kenjiArai	0:5b88d5760320	1895	}
kenjiArai	0:5b88d5760320	1896	return( 0 );
kenjiArai	0:5b88d5760320	1897	}
kenjiArai	0:5b88d5760320	1898
kenjiArai	0:5b88d5760320	1899	#define PRINT_ITEM(i) \
kenjiArai	0:5b88d5760320	1900	{ \
kenjiArai	0:5b88d5760320	1901	ret = mbedtls_snprintf( p, n, "%s" i, sep ); \
kenjiArai	0:5b88d5760320	1902	MBEDTLS_X509_SAFE_SNPRINTF; \
kenjiArai	0:5b88d5760320	1903	sep = ", "; \
kenjiArai	0:5b88d5760320	1904	}
kenjiArai	0:5b88d5760320	1905
kenjiArai	0:5b88d5760320	1906	#define CERT_TYPE(type,name) \
kenjiArai	0:5b88d5760320	1907	if( ns_cert_type & (type) ) \
kenjiArai	0:5b88d5760320	1908	PRINT_ITEM( name );
kenjiArai	0:5b88d5760320	1909
kenjiArai	0:5b88d5760320	1910	static int x509_info_cert_type( char *buf, size_t size,
kenjiArai	0:5b88d5760320	1911	unsigned char ns_cert_type )
kenjiArai	0:5b88d5760320	1912	{
kenjiArai	0:5b88d5760320	1913	int ret;
kenjiArai	0:5b88d5760320	1914	size_t n = *size;
kenjiArai	0:5b88d5760320	1915	char p = buf;
kenjiArai	0:5b88d5760320	1916	const char *sep = "";
kenjiArai	0:5b88d5760320	1917
kenjiArai	0:5b88d5760320	1918	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT, "SSL Client" );
kenjiArai	0:5b88d5760320	1919	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER, "SSL Server" );
kenjiArai	0:5b88d5760320	1920	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL, "Email" );
kenjiArai	0:5b88d5760320	1921	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING, "Object Signing" );
kenjiArai	0:5b88d5760320	1922	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_RESERVED, "Reserved" );
kenjiArai	0:5b88d5760320	1923	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CA, "SSL CA" );
kenjiArai	0:5b88d5760320	1924	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA, "Email CA" );
kenjiArai	0:5b88d5760320	1925	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA, "Object Signing CA" );
kenjiArai	0:5b88d5760320	1926
kenjiArai	0:5b88d5760320	1927	*size = n;
kenjiArai	0:5b88d5760320	1928	*buf = p;
kenjiArai	0:5b88d5760320	1929
kenjiArai	0:5b88d5760320	1930	return( 0 );
kenjiArai	0:5b88d5760320	1931	}
kenjiArai	0:5b88d5760320	1932
kenjiArai	0:5b88d5760320	1933	#define KEY_USAGE(code,name) \
kenjiArai	0:5b88d5760320	1934	if( key_usage & (code) ) \
kenjiArai	0:5b88d5760320	1935	PRINT_ITEM( name );
kenjiArai	0:5b88d5760320	1936
kenjiArai	0:5b88d5760320	1937	static int x509_info_key_usage( char *buf, size_t size,
kenjiArai	0:5b88d5760320	1938	unsigned int key_usage )
kenjiArai	0:5b88d5760320	1939	{
kenjiArai	0:5b88d5760320	1940	int ret;
kenjiArai	0:5b88d5760320	1941	size_t n = *size;
kenjiArai	0:5b88d5760320	1942	char p = buf;
kenjiArai	0:5b88d5760320	1943	const char *sep = "";
kenjiArai	0:5b88d5760320	1944
kenjiArai	0:5b88d5760320	1945	KEY_USAGE( MBEDTLS_X509_KU_DIGITAL_SIGNATURE, "Digital Signature" );
kenjiArai	0:5b88d5760320	1946	KEY_USAGE( MBEDTLS_X509_KU_NON_REPUDIATION, "Non Repudiation" );
kenjiArai	0:5b88d5760320	1947	KEY_USAGE( MBEDTLS_X509_KU_KEY_ENCIPHERMENT, "Key Encipherment" );
kenjiArai	0:5b88d5760320	1948	KEY_USAGE( MBEDTLS_X509_KU_DATA_ENCIPHERMENT, "Data Encipherment" );
kenjiArai	0:5b88d5760320	1949	KEY_USAGE( MBEDTLS_X509_KU_KEY_AGREEMENT, "Key Agreement" );
kenjiArai	0:5b88d5760320	1950	KEY_USAGE( MBEDTLS_X509_KU_KEY_CERT_SIGN, "Key Cert Sign" );
kenjiArai	0:5b88d5760320	1951	KEY_USAGE( MBEDTLS_X509_KU_CRL_SIGN, "CRL Sign" );
kenjiArai	0:5b88d5760320	1952	KEY_USAGE( MBEDTLS_X509_KU_ENCIPHER_ONLY, "Encipher Only" );
kenjiArai	0:5b88d5760320	1953	KEY_USAGE( MBEDTLS_X509_KU_DECIPHER_ONLY, "Decipher Only" );
kenjiArai	0:5b88d5760320	1954
kenjiArai	0:5b88d5760320	1955	*size = n;
kenjiArai	0:5b88d5760320	1956	*buf = p;
kenjiArai	0:5b88d5760320	1957
kenjiArai	0:5b88d5760320	1958	return( 0 );
kenjiArai	0:5b88d5760320	1959	}
kenjiArai	0:5b88d5760320	1960
kenjiArai	0:5b88d5760320	1961	static int x509_info_ext_key_usage( char *buf, size_t size,
kenjiArai	0:5b88d5760320	1962	const mbedtls_x509_sequence *extended_key_usage )
kenjiArai	0:5b88d5760320	1963	{
kenjiArai	0:5b88d5760320	1964	int ret;
kenjiArai	0:5b88d5760320	1965	const char *desc;
kenjiArai	0:5b88d5760320	1966	size_t n = *size;
kenjiArai	0:5b88d5760320	1967	char p = buf;
kenjiArai	0:5b88d5760320	1968	const mbedtls_x509_sequence *cur = extended_key_usage;
kenjiArai	0:5b88d5760320	1969	const char *sep = "";
kenjiArai	0:5b88d5760320	1970
kenjiArai	0:5b88d5760320	1971	while( cur != NULL )
kenjiArai	0:5b88d5760320	1972	{
kenjiArai	0:5b88d5760320	1973	if( mbedtls_oid_get_extended_key_usage( &cur->buf, &desc ) != 0 )
kenjiArai	0:5b88d5760320	1974	desc = "???";
kenjiArai	0:5b88d5760320	1975
kenjiArai	0:5b88d5760320	1976	ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
kenjiArai	0:5b88d5760320	1977	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	1978
kenjiArai	0:5b88d5760320	1979	sep = ", ";
kenjiArai	0:5b88d5760320	1980
kenjiArai	0:5b88d5760320	1981	cur = cur->next;
kenjiArai	0:5b88d5760320	1982	}
kenjiArai	0:5b88d5760320	1983
kenjiArai	0:5b88d5760320	1984	*size = n;
kenjiArai	0:5b88d5760320	1985	*buf = p;
kenjiArai	0:5b88d5760320	1986
kenjiArai	0:5b88d5760320	1987	return( 0 );
kenjiArai	0:5b88d5760320	1988	}
kenjiArai	0:5b88d5760320	1989
kenjiArai	0:5b88d5760320	1990	static int x509_info_cert_policies( char *buf, size_t size,
kenjiArai	0:5b88d5760320	1991	const mbedtls_x509_sequence *certificate_policies )
kenjiArai	0:5b88d5760320	1992	{
kenjiArai	0:5b88d5760320	1993	int ret;
kenjiArai	0:5b88d5760320	1994	const char *desc;
kenjiArai	0:5b88d5760320	1995	size_t n = *size;
kenjiArai	0:5b88d5760320	1996	char p = buf;
kenjiArai	0:5b88d5760320	1997	const mbedtls_x509_sequence *cur = certificate_policies;
kenjiArai	0:5b88d5760320	1998	const char *sep = "";
kenjiArai	0:5b88d5760320	1999
kenjiArai	0:5b88d5760320	2000	while( cur != NULL )
kenjiArai	0:5b88d5760320	2001	{
kenjiArai	0:5b88d5760320	2002	if( mbedtls_oid_get_certificate_policies( &cur->buf, &desc ) != 0 )
kenjiArai	0:5b88d5760320	2003	desc = "???";
kenjiArai	0:5b88d5760320	2004
kenjiArai	0:5b88d5760320	2005	ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
kenjiArai	0:5b88d5760320	2006	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2007
kenjiArai	0:5b88d5760320	2008	sep = ", ";
kenjiArai	0:5b88d5760320	2009
kenjiArai	0:5b88d5760320	2010	cur = cur->next;
kenjiArai	0:5b88d5760320	2011	}
kenjiArai	0:5b88d5760320	2012
kenjiArai	0:5b88d5760320	2013	*size = n;
kenjiArai	0:5b88d5760320	2014	*buf = p;
kenjiArai	0:5b88d5760320	2015
kenjiArai	0:5b88d5760320	2016	return( 0 );
kenjiArai	0:5b88d5760320	2017	}
kenjiArai	0:5b88d5760320	2018
kenjiArai	0:5b88d5760320	2019	/*
kenjiArai	0:5b88d5760320	2020	* Return an informational string about the certificate.
kenjiArai	0:5b88d5760320	2021	*/
kenjiArai	0:5b88d5760320	2022	#define BEFORE_COLON 18
kenjiArai	0:5b88d5760320	2023	#define BC "18"
kenjiArai	0:5b88d5760320	2024	int mbedtls_x509_crt_info( char buf, size_t size, const char prefix,
kenjiArai	0:5b88d5760320	2025	const mbedtls_x509_crt *crt )
kenjiArai	0:5b88d5760320	2026	{
kenjiArai	0:5b88d5760320	2027	int ret;
kenjiArai	0:5b88d5760320	2028	size_t n;
kenjiArai	0:5b88d5760320	2029	char *p;
kenjiArai	0:5b88d5760320	2030	char key_size_str[BEFORE_COLON];
kenjiArai	0:5b88d5760320	2031
kenjiArai	0:5b88d5760320	2032	p = buf;
kenjiArai	0:5b88d5760320	2033	n = size;
kenjiArai	0:5b88d5760320	2034
kenjiArai	0:5b88d5760320	2035	if( NULL == crt )
kenjiArai	0:5b88d5760320	2036	{
kenjiArai	0:5b88d5760320	2037	ret = mbedtls_snprintf( p, n, "\nCertificate is uninitialised!\n" );
kenjiArai	0:5b88d5760320	2038	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2039
kenjiArai	0:5b88d5760320	2040	return( (int) ( size - n ) );
kenjiArai	0:5b88d5760320	2041	}
kenjiArai	0:5b88d5760320	2042
kenjiArai	0:5b88d5760320	2043	ret = mbedtls_snprintf( p, n, "%scert. version : %d\n",
kenjiArai	0:5b88d5760320	2044	prefix, crt->version );
kenjiArai	0:5b88d5760320	2045	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2046	ret = mbedtls_snprintf( p, n, "%sserial number : ",
kenjiArai	0:5b88d5760320	2047	prefix );
kenjiArai	0:5b88d5760320	2048	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2049
kenjiArai	0:5b88d5760320	2050	ret = mbedtls_x509_serial_gets( p, n, &crt->serial );
kenjiArai	0:5b88d5760320	2051	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2052
kenjiArai	0:5b88d5760320	2053	ret = mbedtls_snprintf( p, n, "\n%sissuer name : ", prefix );
kenjiArai	0:5b88d5760320	2054	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2055	ret = mbedtls_x509_dn_gets( p, n, &crt->issuer );
kenjiArai	0:5b88d5760320	2056	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2057
kenjiArai	0:5b88d5760320	2058	ret = mbedtls_snprintf( p, n, "\n%ssubject name : ", prefix );
kenjiArai	0:5b88d5760320	2059	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2060	ret = mbedtls_x509_dn_gets( p, n, &crt->subject );
kenjiArai	0:5b88d5760320	2061	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2062
kenjiArai	0:5b88d5760320	2063	ret = mbedtls_snprintf( p, n, "\n%sissued on : " \
kenjiArai	0:5b88d5760320	2064	"%04d-%02d-%02d %02d:%02d:%02d", prefix,
kenjiArai	0:5b88d5760320	2065	crt->valid_from.year, crt->valid_from.mon,
kenjiArai	0:5b88d5760320	2066	crt->valid_from.day, crt->valid_from.hour,
kenjiArai	0:5b88d5760320	2067	crt->valid_from.min, crt->valid_from.sec );
kenjiArai	0:5b88d5760320	2068	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2069
kenjiArai	0:5b88d5760320	2070	ret = mbedtls_snprintf( p, n, "\n%sexpires on : " \
kenjiArai	0:5b88d5760320	2071	"%04d-%02d-%02d %02d:%02d:%02d", prefix,
kenjiArai	0:5b88d5760320	2072	crt->valid_to.year, crt->valid_to.mon,
kenjiArai	0:5b88d5760320	2073	crt->valid_to.day, crt->valid_to.hour,
kenjiArai	0:5b88d5760320	2074	crt->valid_to.min, crt->valid_to.sec );
kenjiArai	0:5b88d5760320	2075	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2076
kenjiArai	0:5b88d5760320	2077	ret = mbedtls_snprintf( p, n, "\n%ssigned using : ", prefix );
kenjiArai	0:5b88d5760320	2078	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2079
kenjiArai	0:5b88d5760320	2080	ret = mbedtls_x509_sig_alg_gets( p, n, &crt->sig_oid, crt->sig_pk,
kenjiArai	0:5b88d5760320	2081	crt->sig_md, crt->sig_opts );
kenjiArai	0:5b88d5760320	2082	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2083
kenjiArai	0:5b88d5760320	2084	/* Key size */
kenjiArai	0:5b88d5760320	2085	if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
kenjiArai	0:5b88d5760320	2086	mbedtls_pk_get_name( &crt->pk ) ) ) != 0 )
kenjiArai	0:5b88d5760320	2087	{
kenjiArai	0:5b88d5760320	2088	return( ret );
kenjiArai	0:5b88d5760320	2089	}
kenjiArai	0:5b88d5760320	2090
kenjiArai	0:5b88d5760320	2091	ret = mbedtls_snprintf( p, n, "\n%s%-" BC "s: %d bits", prefix, key_size_str,
kenjiArai	0:5b88d5760320	2092	(int) mbedtls_pk_get_bitlen( &crt->pk ) );
kenjiArai	0:5b88d5760320	2093	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2094
kenjiArai	0:5b88d5760320	2095	/*
kenjiArai	0:5b88d5760320	2096	* Optional extensions
kenjiArai	0:5b88d5760320	2097	*/
kenjiArai	0:5b88d5760320	2098
kenjiArai	0:5b88d5760320	2099	if( crt->ext_types & MBEDTLS_X509_EXT_BASIC_CONSTRAINTS )
kenjiArai	0:5b88d5760320	2100	{
kenjiArai	0:5b88d5760320	2101	ret = mbedtls_snprintf( p, n, "\n%sbasic constraints : CA=%s", prefix,
kenjiArai	0:5b88d5760320	2102	crt->ca_istrue ? "true" : "false" );
kenjiArai	0:5b88d5760320	2103	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2104
kenjiArai	0:5b88d5760320	2105	if( crt->max_pathlen > 0 )
kenjiArai	0:5b88d5760320	2106	{
kenjiArai	0:5b88d5760320	2107	ret = mbedtls_snprintf( p, n, ", max_pathlen=%d", crt->max_pathlen - 1 );
kenjiArai	0:5b88d5760320	2108	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2109	}
kenjiArai	0:5b88d5760320	2110	}
kenjiArai	0:5b88d5760320	2111
kenjiArai	0:5b88d5760320	2112	if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
kenjiArai	0:5b88d5760320	2113	{
kenjiArai	0:5b88d5760320	2114	ret = mbedtls_snprintf( p, n, "\n%ssubject alt name :", prefix );
kenjiArai	0:5b88d5760320	2115	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2116
kenjiArai	0:5b88d5760320	2117	if( ( ret = x509_info_subject_alt_name( &p, &n,
kenjiArai	0:5b88d5760320	2118	&crt->subject_alt_names,
kenjiArai	0:5b88d5760320	2119	prefix ) ) != 0 )
kenjiArai	0:5b88d5760320	2120	return( ret );
kenjiArai	0:5b88d5760320	2121	}
kenjiArai	0:5b88d5760320	2122
kenjiArai	0:5b88d5760320	2123	if( crt->ext_types & MBEDTLS_X509_EXT_NS_CERT_TYPE )
kenjiArai	0:5b88d5760320	2124	{
kenjiArai	0:5b88d5760320	2125	ret = mbedtls_snprintf( p, n, "\n%scert. type : ", prefix );
kenjiArai	0:5b88d5760320	2126	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2127
kenjiArai	0:5b88d5760320	2128	if( ( ret = x509_info_cert_type( &p, &n, crt->ns_cert_type ) ) != 0 )
kenjiArai	0:5b88d5760320	2129	return( ret );
kenjiArai	0:5b88d5760320	2130	}
kenjiArai	0:5b88d5760320	2131
kenjiArai	0:5b88d5760320	2132	if( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE )
kenjiArai	0:5b88d5760320	2133	{
kenjiArai	0:5b88d5760320	2134	ret = mbedtls_snprintf( p, n, "\n%skey usage : ", prefix );
kenjiArai	0:5b88d5760320	2135	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2136
kenjiArai	0:5b88d5760320	2137	if( ( ret = x509_info_key_usage( &p, &n, crt->key_usage ) ) != 0 )
kenjiArai	0:5b88d5760320	2138	return( ret );
kenjiArai	0:5b88d5760320	2139	}
kenjiArai	0:5b88d5760320	2140
kenjiArai	0:5b88d5760320	2141	if( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE )
kenjiArai	0:5b88d5760320	2142	{
kenjiArai	0:5b88d5760320	2143	ret = mbedtls_snprintf( p, n, "\n%sext key usage : ", prefix );
kenjiArai	0:5b88d5760320	2144	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2145
kenjiArai	0:5b88d5760320	2146	if( ( ret = x509_info_ext_key_usage( &p, &n,
kenjiArai	0:5b88d5760320	2147	&crt->ext_key_usage ) ) != 0 )
kenjiArai	0:5b88d5760320	2148	return( ret );
kenjiArai	0:5b88d5760320	2149	}
kenjiArai	0:5b88d5760320	2150
kenjiArai	0:5b88d5760320	2151	if( crt->ext_types & MBEDTLS_OID_X509_EXT_CERTIFICATE_POLICIES )
kenjiArai	0:5b88d5760320	2152	{
kenjiArai	0:5b88d5760320	2153	ret = mbedtls_snprintf( p, n, "\n%scertificate policies : ", prefix );
kenjiArai	0:5b88d5760320	2154	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2155
kenjiArai	0:5b88d5760320	2156	if( ( ret = x509_info_cert_policies( &p, &n,
kenjiArai	0:5b88d5760320	2157	&crt->certificate_policies ) ) != 0 )
kenjiArai	0:5b88d5760320	2158	return( ret );
kenjiArai	0:5b88d5760320	2159	}
kenjiArai	0:5b88d5760320	2160
kenjiArai	0:5b88d5760320	2161	ret = mbedtls_snprintf( p, n, "\n" );
kenjiArai	0:5b88d5760320	2162	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2163
kenjiArai	0:5b88d5760320	2164	return( (int) ( size - n ) );
kenjiArai	0:5b88d5760320	2165	}
kenjiArai	0:5b88d5760320	2166
kenjiArai	0:5b88d5760320	2167	struct x509_crt_verify_string {
kenjiArai	0:5b88d5760320	2168	int code;
kenjiArai	0:5b88d5760320	2169	const char *string;
kenjiArai	0:5b88d5760320	2170	};
kenjiArai	0:5b88d5760320	2171
kenjiArai	0:5b88d5760320	2172	static const struct x509_crt_verify_string x509_crt_verify_strings[] = {
kenjiArai	0:5b88d5760320	2173	{ MBEDTLS_X509_BADCERT_EXPIRED, "The certificate validity has expired" },
kenjiArai	0:5b88d5760320	2174	{ MBEDTLS_X509_BADCERT_REVOKED, "The certificate has been revoked (is on a CRL)" },
kenjiArai	0:5b88d5760320	2175	{ MBEDTLS_X509_BADCERT_CN_MISMATCH, "The certificate Common Name (CN) does not match with the expected CN" },
kenjiArai	0:5b88d5760320	2176	{ MBEDTLS_X509_BADCERT_NOT_TRUSTED, "The certificate is not correctly signed by the trusted CA" },
kenjiArai	0:5b88d5760320	2177	{ MBEDTLS_X509_BADCRL_NOT_TRUSTED, "The CRL is not correctly signed by the trusted CA" },
kenjiArai	0:5b88d5760320	2178	{ MBEDTLS_X509_BADCRL_EXPIRED, "The CRL is expired" },
kenjiArai	0:5b88d5760320	2179	{ MBEDTLS_X509_BADCERT_MISSING, "Certificate was missing" },
kenjiArai	0:5b88d5760320	2180	{ MBEDTLS_X509_BADCERT_SKIP_VERIFY, "Certificate verification was skipped" },
kenjiArai	0:5b88d5760320	2181	{ MBEDTLS_X509_BADCERT_OTHER, "Other reason (can be used by verify callback)" },
kenjiArai	0:5b88d5760320	2182	{ MBEDTLS_X509_BADCERT_FUTURE, "The certificate validity starts in the future" },
kenjiArai	0:5b88d5760320	2183	{ MBEDTLS_X509_BADCRL_FUTURE, "The CRL is from the future" },
kenjiArai	0:5b88d5760320	2184	{ MBEDTLS_X509_BADCERT_KEY_USAGE, "Usage does not match the keyUsage extension" },
kenjiArai	0:5b88d5760320	2185	{ MBEDTLS_X509_BADCERT_EXT_KEY_USAGE, "Usage does not match the extendedKeyUsage extension" },
kenjiArai	0:5b88d5760320	2186	{ MBEDTLS_X509_BADCERT_NS_CERT_TYPE, "Usage does not match the nsCertType extension" },
kenjiArai	0:5b88d5760320	2187	{ MBEDTLS_X509_BADCERT_BAD_MD, "The certificate is signed with an unacceptable hash." },
kenjiArai	0:5b88d5760320	2188	{ MBEDTLS_X509_BADCERT_BAD_PK, "The certificate is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
kenjiArai	0:5b88d5760320	2189	{ MBEDTLS_X509_BADCERT_BAD_KEY, "The certificate is signed with an unacceptable key (eg bad curve, RSA too short)." },
kenjiArai	0:5b88d5760320	2190	{ MBEDTLS_X509_BADCRL_BAD_MD, "The CRL is signed with an unacceptable hash." },
kenjiArai	0:5b88d5760320	2191	{ MBEDTLS_X509_BADCRL_BAD_PK, "The CRL is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
kenjiArai	0:5b88d5760320	2192	{ MBEDTLS_X509_BADCRL_BAD_KEY, "The CRL is signed with an unacceptable key (eg bad curve, RSA too short)." },
kenjiArai	0:5b88d5760320	2193	{ 0, NULL }
kenjiArai	0:5b88d5760320	2194	};
kenjiArai	0:5b88d5760320	2195
kenjiArai	0:5b88d5760320	2196	int mbedtls_x509_crt_verify_info( char buf, size_t size, const char prefix,
kenjiArai	0:5b88d5760320	2197	uint32_t flags )
kenjiArai	0:5b88d5760320	2198	{
kenjiArai	0:5b88d5760320	2199	int ret;
kenjiArai	0:5b88d5760320	2200	const struct x509_crt_verify_string *cur;
kenjiArai	0:5b88d5760320	2201	char *p = buf;
kenjiArai	0:5b88d5760320	2202	size_t n = size;
kenjiArai	0:5b88d5760320	2203
kenjiArai	0:5b88d5760320	2204	for( cur = x509_crt_verify_strings; cur->string != NULL ; cur++ )
kenjiArai	0:5b88d5760320	2205	{
kenjiArai	0:5b88d5760320	2206	if( ( flags & cur->code ) == 0 )
kenjiArai	0:5b88d5760320	2207	continue;
kenjiArai	0:5b88d5760320	2208
kenjiArai	0:5b88d5760320	2209	ret = mbedtls_snprintf( p, n, "%s%s\n", prefix, cur->string );
kenjiArai	0:5b88d5760320	2210	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2211	flags ^= cur->code;
kenjiArai	0:5b88d5760320	2212	}
kenjiArai	0:5b88d5760320	2213
kenjiArai	0:5b88d5760320	2214	if( flags != 0 )
kenjiArai	0:5b88d5760320	2215	{
kenjiArai	0:5b88d5760320	2216	ret = mbedtls_snprintf( p, n, "%sUnknown reason "
kenjiArai	0:5b88d5760320	2217	"(this should not happen)\n", prefix );
kenjiArai	0:5b88d5760320	2218	MBEDTLS_X509_SAFE_SNPRINTF;
kenjiArai	0:5b88d5760320	2219	}
kenjiArai	0:5b88d5760320	2220
kenjiArai	0:5b88d5760320	2221	return( (int) ( size - n ) );
kenjiArai	0:5b88d5760320	2222	}
kenjiArai	0:5b88d5760320	2223
kenjiArai	0:5b88d5760320	2224	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
kenjiArai	0:5b88d5760320	2225	int mbedtls_x509_crt_check_key_usage( const mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	2226	unsigned int usage )
kenjiArai	0:5b88d5760320	2227	{
kenjiArai	0:5b88d5760320	2228	unsigned int usage_must, usage_may;
kenjiArai	0:5b88d5760320	2229	unsigned int may_mask = MBEDTLS_X509_KU_ENCIPHER_ONLY
kenjiArai	0:5b88d5760320	2230	\| MBEDTLS_X509_KU_DECIPHER_ONLY;
kenjiArai	0:5b88d5760320	2231
kenjiArai	0:5b88d5760320	2232	if( ( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE ) == 0 )
kenjiArai	0:5b88d5760320	2233	return( 0 );
kenjiArai	0:5b88d5760320	2234
kenjiArai	0:5b88d5760320	2235	usage_must = usage & ~may_mask;
kenjiArai	0:5b88d5760320	2236
kenjiArai	0:5b88d5760320	2237	if( ( ( crt->key_usage & ~may_mask ) & usage_must ) != usage_must )
kenjiArai	0:5b88d5760320	2238	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
kenjiArai	0:5b88d5760320	2239
kenjiArai	0:5b88d5760320	2240	usage_may = usage & may_mask;
kenjiArai	0:5b88d5760320	2241
kenjiArai	0:5b88d5760320	2242	if( ( ( crt->key_usage & may_mask ) \| usage_may ) != usage_may )
kenjiArai	0:5b88d5760320	2243	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
kenjiArai	0:5b88d5760320	2244
kenjiArai	0:5b88d5760320	2245	return( 0 );
kenjiArai	0:5b88d5760320	2246	}
kenjiArai	0:5b88d5760320	2247	#endif
kenjiArai	0:5b88d5760320	2248
kenjiArai	0:5b88d5760320	2249	#if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
kenjiArai	0:5b88d5760320	2250	int mbedtls_x509_crt_check_extended_key_usage( const mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	2251	const char *usage_oid,
kenjiArai	0:5b88d5760320	2252	size_t usage_len )
kenjiArai	0:5b88d5760320	2253	{
kenjiArai	0:5b88d5760320	2254	const mbedtls_x509_sequence *cur;
kenjiArai	0:5b88d5760320	2255
kenjiArai	0:5b88d5760320	2256	/* Extension is not mandatory, absent means no restriction */
kenjiArai	0:5b88d5760320	2257	if( ( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE ) == 0 )
kenjiArai	0:5b88d5760320	2258	return( 0 );
kenjiArai	0:5b88d5760320	2259
kenjiArai	0:5b88d5760320	2260	/*
kenjiArai	0:5b88d5760320	2261	* Look for the requested usage (or wildcard ANY) in our list
kenjiArai	0:5b88d5760320	2262	*/
kenjiArai	0:5b88d5760320	2263	for( cur = &crt->ext_key_usage; cur != NULL; cur = cur->next )
kenjiArai	0:5b88d5760320	2264	{
kenjiArai	0:5b88d5760320	2265	const mbedtls_x509_buf *cur_oid = &cur->buf;
kenjiArai	0:5b88d5760320	2266
kenjiArai	0:5b88d5760320	2267	if( cur_oid->len == usage_len &&
kenjiArai	0:5b88d5760320	2268	memcmp( cur_oid->p, usage_oid, usage_len ) == 0 )
kenjiArai	0:5b88d5760320	2269	{
kenjiArai	0:5b88d5760320	2270	return( 0 );
kenjiArai	0:5b88d5760320	2271	}
kenjiArai	0:5b88d5760320	2272
kenjiArai	0:5b88d5760320	2273	if( MBEDTLS_OID_CMP( MBEDTLS_OID_ANY_EXTENDED_KEY_USAGE, cur_oid ) == 0 )
kenjiArai	0:5b88d5760320	2274	return( 0 );
kenjiArai	0:5b88d5760320	2275	}
kenjiArai	0:5b88d5760320	2276
kenjiArai	0:5b88d5760320	2277	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
kenjiArai	0:5b88d5760320	2278	}
kenjiArai	0:5b88d5760320	2279	#endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
kenjiArai	0:5b88d5760320	2280
kenjiArai	0:5b88d5760320	2281	#if defined(MBEDTLS_X509_CRL_PARSE_C)
kenjiArai	0:5b88d5760320	2282	/*
kenjiArai	0:5b88d5760320	2283	* Return 1 if the certificate is revoked, or 0 otherwise.
kenjiArai	0:5b88d5760320	2284	*/
kenjiArai	0:5b88d5760320	2285	int mbedtls_x509_crt_is_revoked( const mbedtls_x509_crt crt, const mbedtls_x509_crl crl )
kenjiArai	0:5b88d5760320	2286	{
kenjiArai	0:5b88d5760320	2287	const mbedtls_x509_crl_entry *cur = &crl->entry;
kenjiArai	0:5b88d5760320	2288
kenjiArai	0:5b88d5760320	2289	while( cur != NULL && cur->serial.len != 0 )
kenjiArai	0:5b88d5760320	2290	{
kenjiArai	0:5b88d5760320	2291	if( crt->serial.len == cur->serial.len &&
kenjiArai	0:5b88d5760320	2292	memcmp( crt->serial.p, cur->serial.p, crt->serial.len ) == 0 )
kenjiArai	0:5b88d5760320	2293	{
kenjiArai	0:5b88d5760320	2294	if( mbedtls_x509_time_is_past( &cur->revocation_date ) )
kenjiArai	0:5b88d5760320	2295	return( 1 );
kenjiArai	0:5b88d5760320	2296	}
kenjiArai	0:5b88d5760320	2297
kenjiArai	0:5b88d5760320	2298	cur = cur->next;
kenjiArai	0:5b88d5760320	2299	}
kenjiArai	0:5b88d5760320	2300
kenjiArai	0:5b88d5760320	2301	return( 0 );
kenjiArai	0:5b88d5760320	2302	}
kenjiArai	0:5b88d5760320	2303
kenjiArai	0:5b88d5760320	2304	/*
kenjiArai	0:5b88d5760320	2305	* Check that the given certificate is not revoked according to the CRL.
kenjiArai	0:5b88d5760320	2306	* Skip validation if no CRL for the given CA is present.
kenjiArai	0:5b88d5760320	2307	*/
kenjiArai	0:5b88d5760320	2308	static int x509_crt_verifycrl( mbedtls_x509_crt crt, mbedtls_x509_crt ca,
kenjiArai	0:5b88d5760320	2309	mbedtls_x509_crl *crl_list,
kenjiArai	0:5b88d5760320	2310	const mbedtls_x509_crt_profile *profile )
kenjiArai	0:5b88d5760320	2311	{
kenjiArai	0:5b88d5760320	2312	int flags = 0;
kenjiArai	0:5b88d5760320	2313	unsigned char hash[MBEDTLS_MD_MAX_SIZE];
kenjiArai	0:5b88d5760320	2314	const mbedtls_md_info_t *md_info;
kenjiArai	0:5b88d5760320	2315
kenjiArai	0:5b88d5760320	2316	if( ca == NULL )
kenjiArai	0:5b88d5760320	2317	return( flags );
kenjiArai	0:5b88d5760320	2318
kenjiArai	0:5b88d5760320	2319	while( crl_list != NULL )
kenjiArai	0:5b88d5760320	2320	{
kenjiArai	0:5b88d5760320	2321	if( crl_list->version == 0 \|\|
kenjiArai	0:5b88d5760320	2322	x509_name_cmp( &crl_list->issuer, &ca->subject ) != 0 )
kenjiArai	0:5b88d5760320	2323	{
kenjiArai	0:5b88d5760320	2324	crl_list = crl_list->next;
kenjiArai	0:5b88d5760320	2325	continue;
kenjiArai	0:5b88d5760320	2326	}
kenjiArai	0:5b88d5760320	2327
kenjiArai	0:5b88d5760320	2328	/*
kenjiArai	0:5b88d5760320	2329	* Check if the CA is configured to sign CRLs
kenjiArai	0:5b88d5760320	2330	*/
kenjiArai	0:5b88d5760320	2331	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
kenjiArai	0:5b88d5760320	2332	if( mbedtls_x509_crt_check_key_usage( ca,
kenjiArai	0:5b88d5760320	2333	MBEDTLS_X509_KU_CRL_SIGN ) != 0 )
kenjiArai	0:5b88d5760320	2334	{
kenjiArai	0:5b88d5760320	2335	flags \|= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
kenjiArai	0:5b88d5760320	2336	break;
kenjiArai	0:5b88d5760320	2337	}
kenjiArai	0:5b88d5760320	2338	#endif
kenjiArai	0:5b88d5760320	2339
kenjiArai	0:5b88d5760320	2340	/*
kenjiArai	0:5b88d5760320	2341	* Check if CRL is correctly signed by the trusted CA
kenjiArai	0:5b88d5760320	2342	*/
kenjiArai	0:5b88d5760320	2343	if( x509_profile_check_md_alg( profile, crl_list->sig_md ) != 0 )
kenjiArai	0:5b88d5760320	2344	flags \|= MBEDTLS_X509_BADCRL_BAD_MD;
kenjiArai	0:5b88d5760320	2345
kenjiArai	0:5b88d5760320	2346	if( x509_profile_check_pk_alg( profile, crl_list->sig_pk ) != 0 )
kenjiArai	0:5b88d5760320	2347	flags \|= MBEDTLS_X509_BADCRL_BAD_PK;
kenjiArai	0:5b88d5760320	2348
kenjiArai	0:5b88d5760320	2349	md_info = mbedtls_md_info_from_type( crl_list->sig_md );
kenjiArai	0:5b88d5760320	2350	if( mbedtls_md( md_info, crl_list->tbs.p, crl_list->tbs.len, hash ) != 0 )
kenjiArai	0:5b88d5760320	2351	{
kenjiArai	0:5b88d5760320	2352	/* Note: this can't happen except after an internal error */
kenjiArai	0:5b88d5760320	2353	flags \|= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
kenjiArai	0:5b88d5760320	2354	break;
kenjiArai	0:5b88d5760320	2355	}
kenjiArai	0:5b88d5760320	2356
kenjiArai	0:5b88d5760320	2357	if( x509_profile_check_key( profile, &ca->pk ) != 0 )
kenjiArai	0:5b88d5760320	2358	flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
kenjiArai	0:5b88d5760320	2359
kenjiArai	0:5b88d5760320	2360	if( mbedtls_pk_verify_ext( crl_list->sig_pk, crl_list->sig_opts, &ca->pk,
kenjiArai	0:5b88d5760320	2361	crl_list->sig_md, hash, mbedtls_md_get_size( md_info ),
kenjiArai	0:5b88d5760320	2362	crl_list->sig.p, crl_list->sig.len ) != 0 )
kenjiArai	0:5b88d5760320	2363	{
kenjiArai	0:5b88d5760320	2364	flags \|= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
kenjiArai	0:5b88d5760320	2365	break;
kenjiArai	0:5b88d5760320	2366	}
kenjiArai	0:5b88d5760320	2367
kenjiArai	0:5b88d5760320	2368	/*
kenjiArai	0:5b88d5760320	2369	* Check for validity of CRL (Do not drop out)
kenjiArai	0:5b88d5760320	2370	*/
kenjiArai	0:5b88d5760320	2371	if( mbedtls_x509_time_is_past( &crl_list->next_update ) )
kenjiArai	0:5b88d5760320	2372	flags \|= MBEDTLS_X509_BADCRL_EXPIRED;
kenjiArai	0:5b88d5760320	2373
kenjiArai	0:5b88d5760320	2374	if( mbedtls_x509_time_is_future( &crl_list->this_update ) )
kenjiArai	0:5b88d5760320	2375	flags \|= MBEDTLS_X509_BADCRL_FUTURE;
kenjiArai	0:5b88d5760320	2376
kenjiArai	0:5b88d5760320	2377	/*
kenjiArai	0:5b88d5760320	2378	* Check if certificate is revoked
kenjiArai	0:5b88d5760320	2379	*/
kenjiArai	0:5b88d5760320	2380	if( mbedtls_x509_crt_is_revoked( crt, crl_list ) )
kenjiArai	0:5b88d5760320	2381	{
kenjiArai	0:5b88d5760320	2382	flags \|= MBEDTLS_X509_BADCERT_REVOKED;
kenjiArai	0:5b88d5760320	2383	break;
kenjiArai	0:5b88d5760320	2384	}
kenjiArai	0:5b88d5760320	2385
kenjiArai	0:5b88d5760320	2386	crl_list = crl_list->next;
kenjiArai	0:5b88d5760320	2387	}
kenjiArai	0:5b88d5760320	2388
kenjiArai	0:5b88d5760320	2389	return( flags );
kenjiArai	0:5b88d5760320	2390	}
kenjiArai	0:5b88d5760320	2391	#endif /* MBEDTLS_X509_CRL_PARSE_C */
kenjiArai	0:5b88d5760320	2392
kenjiArai	0:5b88d5760320	2393	/*
kenjiArai	0:5b88d5760320	2394	* Check the signature of a certificate by its parent
kenjiArai	0:5b88d5760320	2395	*/
kenjiArai	0:5b88d5760320	2396	static int x509_crt_check_signature( const mbedtls_x509_crt *child,
kenjiArai	0:5b88d5760320	2397	mbedtls_x509_crt *parent,
kenjiArai	0:5b88d5760320	2398	mbedtls_x509_crt_restart_ctx *rs_ctx )
kenjiArai	0:5b88d5760320	2399	{
kenjiArai	0:5b88d5760320	2400	unsigned char hash[MBEDTLS_MD_MAX_SIZE];
kenjiArai	0:5b88d5760320	2401	size_t hash_len;
kenjiArai	0:5b88d5760320	2402	#if !defined(MBEDTLS_USE_PSA_CRYPTO)
kenjiArai	0:5b88d5760320	2403	const mbedtls_md_info_t *md_info;
kenjiArai	0:5b88d5760320	2404	md_info = mbedtls_md_info_from_type( child->sig_md );
kenjiArai	0:5b88d5760320	2405	hash_len = mbedtls_md_get_size( md_info );
kenjiArai	0:5b88d5760320	2406
kenjiArai	0:5b88d5760320	2407	/* Note: hash errors can happen only after an internal error */
kenjiArai	0:5b88d5760320	2408	if( mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash ) != 0 )
kenjiArai	0:5b88d5760320	2409	return( -1 );
kenjiArai	0:5b88d5760320	2410	#else
kenjiArai	0:5b88d5760320	2411	psa_hash_operation_t hash_operation = PSA_HASH_OPERATION_INIT;
kenjiArai	0:5b88d5760320	2412	psa_algorithm_t hash_alg = mbedtls_psa_translate_md( child->sig_md );
kenjiArai	0:5b88d5760320	2413
kenjiArai	0:5b88d5760320	2414	if( psa_hash_setup( &hash_operation, hash_alg ) != PSA_SUCCESS )
kenjiArai	0:5b88d5760320	2415	return( -1 );
kenjiArai	0:5b88d5760320	2416
kenjiArai	0:5b88d5760320	2417	if( psa_hash_update( &hash_operation, child->tbs.p, child->tbs.len )
kenjiArai	0:5b88d5760320	2418	!= PSA_SUCCESS )
kenjiArai	0:5b88d5760320	2419	{
kenjiArai	0:5b88d5760320	2420	return( -1 );
kenjiArai	0:5b88d5760320	2421	}
kenjiArai	0:5b88d5760320	2422
kenjiArai	0:5b88d5760320	2423	if( psa_hash_finish( &hash_operation, hash, sizeof( hash ), &hash_len )
kenjiArai	0:5b88d5760320	2424	!= PSA_SUCCESS )
kenjiArai	0:5b88d5760320	2425	{
kenjiArai	0:5b88d5760320	2426	return( -1 );
kenjiArai	0:5b88d5760320	2427	}
kenjiArai	0:5b88d5760320	2428	#endif /* MBEDTLS_USE_PSA_CRYPTO */
kenjiArai	0:5b88d5760320	2429	/* Skip expensive computation on obvious mismatch */
kenjiArai	0:5b88d5760320	2430	if( ! mbedtls_pk_can_do( &parent->pk, child->sig_pk ) )
kenjiArai	0:5b88d5760320	2431	return( -1 );
kenjiArai	0:5b88d5760320	2432
kenjiArai	0:5b88d5760320	2433	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	2434	if( rs_ctx != NULL && child->sig_pk == MBEDTLS_PK_ECDSA )
kenjiArai	0:5b88d5760320	2435	{
kenjiArai	0:5b88d5760320	2436	return( mbedtls_pk_verify_restartable( &parent->pk,
kenjiArai	0:5b88d5760320	2437	child->sig_md, hash, hash_len,
kenjiArai	0:5b88d5760320	2438	child->sig.p, child->sig.len, &rs_ctx->pk ) );
kenjiArai	0:5b88d5760320	2439	}
kenjiArai	0:5b88d5760320	2440	#else
kenjiArai	0:5b88d5760320	2441	(void) rs_ctx;
kenjiArai	0:5b88d5760320	2442	#endif
kenjiArai	0:5b88d5760320	2443
kenjiArai	0:5b88d5760320	2444	return( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &parent->pk,
kenjiArai	0:5b88d5760320	2445	child->sig_md, hash, hash_len,
kenjiArai	0:5b88d5760320	2446	child->sig.p, child->sig.len ) );
kenjiArai	0:5b88d5760320	2447	}
kenjiArai	0:5b88d5760320	2448
kenjiArai	0:5b88d5760320	2449	/*
kenjiArai	0:5b88d5760320	2450	* Check if 'parent' is a suitable parent (signing CA) for 'child'.
kenjiArai	0:5b88d5760320	2451	* Return 0 if yes, -1 if not.
kenjiArai	0:5b88d5760320	2452	*
kenjiArai	0:5b88d5760320	2453	* top means parent is a locally-trusted certificate
kenjiArai	0:5b88d5760320	2454	*/
kenjiArai	0:5b88d5760320	2455	static int x509_crt_check_parent( const mbedtls_x509_crt *child,
kenjiArai	0:5b88d5760320	2456	const mbedtls_x509_crt *parent,
kenjiArai	0:5b88d5760320	2457	int top )
kenjiArai	0:5b88d5760320	2458	{
kenjiArai	0:5b88d5760320	2459	int need_ca_bit;
kenjiArai	0:5b88d5760320	2460
kenjiArai	0:5b88d5760320	2461	/* Parent must be the issuer */
kenjiArai	0:5b88d5760320	2462	if( x509_name_cmp( &child->issuer, &parent->subject ) != 0 )
kenjiArai	0:5b88d5760320	2463	return( -1 );
kenjiArai	0:5b88d5760320	2464
kenjiArai	0:5b88d5760320	2465	/* Parent must have the basicConstraints CA bit set as a general rule */
kenjiArai	0:5b88d5760320	2466	need_ca_bit = 1;
kenjiArai	0:5b88d5760320	2467
kenjiArai	0:5b88d5760320	2468	/* Exception: v1/v2 certificates that are locally trusted. */
kenjiArai	0:5b88d5760320	2469	if( top && parent->version < 3 )
kenjiArai	0:5b88d5760320	2470	need_ca_bit = 0;
kenjiArai	0:5b88d5760320	2471
kenjiArai	0:5b88d5760320	2472	if( need_ca_bit && ! parent->ca_istrue )
kenjiArai	0:5b88d5760320	2473	return( -1 );
kenjiArai	0:5b88d5760320	2474
kenjiArai	0:5b88d5760320	2475	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
kenjiArai	0:5b88d5760320	2476	if( need_ca_bit &&
kenjiArai	0:5b88d5760320	2477	mbedtls_x509_crt_check_key_usage( parent, MBEDTLS_X509_KU_KEY_CERT_SIGN ) != 0 )
kenjiArai	0:5b88d5760320	2478	{
kenjiArai	0:5b88d5760320	2479	return( -1 );
kenjiArai	0:5b88d5760320	2480	}
kenjiArai	0:5b88d5760320	2481	#endif
kenjiArai	0:5b88d5760320	2482
kenjiArai	0:5b88d5760320	2483	return( 0 );
kenjiArai	0:5b88d5760320	2484	}
kenjiArai	0:5b88d5760320	2485
kenjiArai	0:5b88d5760320	2486	/*
kenjiArai	0:5b88d5760320	2487	* Find a suitable parent for child in candidates, or return NULL.
kenjiArai	0:5b88d5760320	2488	*
kenjiArai	0:5b88d5760320	2489	* Here suitable is defined as:
kenjiArai	0:5b88d5760320	2490	* 1. subject name matches child's issuer
kenjiArai	0:5b88d5760320	2491	* 2. if necessary, the CA bit is set and key usage allows signing certs
kenjiArai	0:5b88d5760320	2492	* 3. for trusted roots, the signature is correct
kenjiArai	0:5b88d5760320	2493	* (for intermediates, the signature is checked and the result reported)
kenjiArai	0:5b88d5760320	2494	* 4. pathlen constraints are satisfied
kenjiArai	0:5b88d5760320	2495	*
kenjiArai	0:5b88d5760320	2496	* If there's a suitable candidate which is also time-valid, return the first
kenjiArai	0:5b88d5760320	2497	* such. Otherwise, return the first suitable candidate (or NULL if there is
kenjiArai	0:5b88d5760320	2498	* none).
kenjiArai	0:5b88d5760320	2499	*
kenjiArai	0:5b88d5760320	2500	* The rationale for this rule is that someone could have a list of trusted
kenjiArai	0:5b88d5760320	2501	* roots with two versions on the same root with different validity periods.
kenjiArai	0:5b88d5760320	2502	* (At least one user reported having such a list and wanted it to just work.)
kenjiArai	0:5b88d5760320	2503	* The reason we don't just require time-validity is that generally there is
kenjiArai	0:5b88d5760320	2504	* only one version, and if it's expired we want the flags to state that
kenjiArai	0:5b88d5760320	2505	* rather than NOT_TRUSTED, as would be the case if we required it here.
kenjiArai	0:5b88d5760320	2506	*
kenjiArai	0:5b88d5760320	2507	* The rationale for rule 3 (signature for trusted roots) is that users might
kenjiArai	0:5b88d5760320	2508	* have two versions of the same CA with different keys in their list, and the
kenjiArai	0:5b88d5760320	2509	* way we select the correct one is by checking the signature (as we don't
kenjiArai	0:5b88d5760320	2510	* rely on key identifier extensions). (This is one way users might choose to
kenjiArai	0:5b88d5760320	2511	* handle key rollover, another relies on self-issued certs, see [SIRO].)
kenjiArai	0:5b88d5760320	2512	*
kenjiArai	0:5b88d5760320	2513	* Arguments:
kenjiArai	0:5b88d5760320	2514	* - [in] child: certificate for which we're looking for a parent
kenjiArai	0:5b88d5760320	2515	* - [in] candidates: chained list of potential parents
kenjiArai	0:5b88d5760320	2516	* - [out] r_parent: parent found (or NULL)
kenjiArai	0:5b88d5760320	2517	* - [out] r_signature_is_good: 1 if child signature by parent is valid, or 0
kenjiArai	0:5b88d5760320	2518	* - [in] top: 1 if candidates consists of trusted roots, ie we're at the top
kenjiArai	0:5b88d5760320	2519	* of the chain, 0 otherwise
kenjiArai	0:5b88d5760320	2520	* - [in] path_cnt: number of intermediates seen so far
kenjiArai	0:5b88d5760320	2521	* - [in] self_cnt: number of self-signed intermediates seen so far
kenjiArai	0:5b88d5760320	2522	* (will never be greater than path_cnt)
kenjiArai	0:5b88d5760320	2523	* - [in-out] rs_ctx: context for restarting operations
kenjiArai	0:5b88d5760320	2524	*
kenjiArai	0:5b88d5760320	2525	* Return value:
kenjiArai	0:5b88d5760320	2526	* - 0 on success
kenjiArai	0:5b88d5760320	2527	* - MBEDTLS_ERR_ECP_IN_PROGRESS otherwise
kenjiArai	0:5b88d5760320	2528	*/
kenjiArai	0:5b88d5760320	2529	static int x509_crt_find_parent_in(
kenjiArai	0:5b88d5760320	2530	mbedtls_x509_crt *child,
kenjiArai	0:5b88d5760320	2531	mbedtls_x509_crt *candidates,
kenjiArai	0:5b88d5760320	2532	mbedtls_x509_crt **r_parent,
kenjiArai	0:5b88d5760320	2533	int *r_signature_is_good,
kenjiArai	0:5b88d5760320	2534	int top,
kenjiArai	0:5b88d5760320	2535	unsigned path_cnt,
kenjiArai	0:5b88d5760320	2536	unsigned self_cnt,
kenjiArai	0:5b88d5760320	2537	mbedtls_x509_crt_restart_ctx *rs_ctx )
kenjiArai	0:5b88d5760320	2538	{
kenjiArai	0:5b88d5760320	2539	int ret;
kenjiArai	0:5b88d5760320	2540	mbedtls_x509_crt parent, fallback_parent;
kenjiArai	0:5b88d5760320	2541	int signature_is_good, fallback_signature_is_good;
kenjiArai	0:5b88d5760320	2542
kenjiArai	0:5b88d5760320	2543	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	2544	/* did we have something in progress? */
kenjiArai	0:5b88d5760320	2545	if( rs_ctx != NULL && rs_ctx->parent != NULL )
kenjiArai	0:5b88d5760320	2546	{
kenjiArai	0:5b88d5760320	2547	/* restore saved state */
kenjiArai	0:5b88d5760320	2548	parent = rs_ctx->parent;
kenjiArai	0:5b88d5760320	2549	fallback_parent = rs_ctx->fallback_parent;
kenjiArai	0:5b88d5760320	2550	fallback_signature_is_good = rs_ctx->fallback_signature_is_good;
kenjiArai	0:5b88d5760320	2551
kenjiArai	0:5b88d5760320	2552	/* clear saved state */
kenjiArai	0:5b88d5760320	2553	rs_ctx->parent = NULL;
kenjiArai	0:5b88d5760320	2554	rs_ctx->fallback_parent = NULL;
kenjiArai	0:5b88d5760320	2555	rs_ctx->fallback_signature_is_good = 0;
kenjiArai	0:5b88d5760320	2556
kenjiArai	0:5b88d5760320	2557	/* resume where we left */
kenjiArai	0:5b88d5760320	2558	goto check_signature;
kenjiArai	0:5b88d5760320	2559	}
kenjiArai	0:5b88d5760320	2560	#endif
kenjiArai	0:5b88d5760320	2561
kenjiArai	0:5b88d5760320	2562	fallback_parent = NULL;
kenjiArai	0:5b88d5760320	2563	fallback_signature_is_good = 0;
kenjiArai	0:5b88d5760320	2564
kenjiArai	0:5b88d5760320	2565	for( parent = candidates; parent != NULL; parent = parent->next )
kenjiArai	0:5b88d5760320	2566	{
kenjiArai	0:5b88d5760320	2567	/* basic parenting skills (name, CA bit, key usage) */
kenjiArai	0:5b88d5760320	2568	if( x509_crt_check_parent( child, parent, top ) != 0 )
kenjiArai	0:5b88d5760320	2569	continue;
kenjiArai	0:5b88d5760320	2570
kenjiArai	0:5b88d5760320	2571	/* +1 because stored max_pathlen is 1 higher that the actual value */
kenjiArai	0:5b88d5760320	2572	if( parent->max_pathlen > 0 &&
kenjiArai	0:5b88d5760320	2573	(size_t) parent->max_pathlen < 1 + path_cnt - self_cnt )
kenjiArai	0:5b88d5760320	2574	{
kenjiArai	0:5b88d5760320	2575	continue;
kenjiArai	0:5b88d5760320	2576	}
kenjiArai	0:5b88d5760320	2577
kenjiArai	0:5b88d5760320	2578	/* Signature */
kenjiArai	0:5b88d5760320	2579	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	2580	check_signature:
kenjiArai	0:5b88d5760320	2581	#endif
kenjiArai	0:5b88d5760320	2582	ret = x509_crt_check_signature( child, parent, rs_ctx );
kenjiArai	0:5b88d5760320	2583
kenjiArai	0:5b88d5760320	2584	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	2585	if( rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
kenjiArai	0:5b88d5760320	2586	{
kenjiArai	0:5b88d5760320	2587	/* save state */
kenjiArai	0:5b88d5760320	2588	rs_ctx->parent = parent;
kenjiArai	0:5b88d5760320	2589	rs_ctx->fallback_parent = fallback_parent;
kenjiArai	0:5b88d5760320	2590	rs_ctx->fallback_signature_is_good = fallback_signature_is_good;
kenjiArai	0:5b88d5760320	2591
kenjiArai	0:5b88d5760320	2592	return( ret );
kenjiArai	0:5b88d5760320	2593	}
kenjiArai	0:5b88d5760320	2594	#else
kenjiArai	0:5b88d5760320	2595	(void) ret;
kenjiArai	0:5b88d5760320	2596	#endif
kenjiArai	0:5b88d5760320	2597
kenjiArai	0:5b88d5760320	2598	signature_is_good = ret == 0;
kenjiArai	0:5b88d5760320	2599	if( top && ! signature_is_good )
kenjiArai	0:5b88d5760320	2600	continue;
kenjiArai	0:5b88d5760320	2601
kenjiArai	0:5b88d5760320	2602	/* optional time check */
kenjiArai	0:5b88d5760320	2603	if( mbedtls_x509_time_is_past( &parent->valid_to ) \|\|
kenjiArai	0:5b88d5760320	2604	mbedtls_x509_time_is_future( &parent->valid_from ) )
kenjiArai	0:5b88d5760320	2605	{
kenjiArai	0:5b88d5760320	2606	if( fallback_parent == NULL )
kenjiArai	0:5b88d5760320	2607	{
kenjiArai	0:5b88d5760320	2608	fallback_parent = parent;
kenjiArai	0:5b88d5760320	2609	fallback_signature_is_good = signature_is_good;
kenjiArai	0:5b88d5760320	2610	}
kenjiArai	0:5b88d5760320	2611
kenjiArai	0:5b88d5760320	2612	continue;
kenjiArai	0:5b88d5760320	2613	}
kenjiArai	0:5b88d5760320	2614
kenjiArai	0:5b88d5760320	2615	break;
kenjiArai	0:5b88d5760320	2616	}
kenjiArai	0:5b88d5760320	2617
kenjiArai	0:5b88d5760320	2618	if( parent != NULL )
kenjiArai	0:5b88d5760320	2619	{
kenjiArai	0:5b88d5760320	2620	*r_parent = parent;
kenjiArai	0:5b88d5760320	2621	*r_signature_is_good = signature_is_good;
kenjiArai	0:5b88d5760320	2622	}
kenjiArai	0:5b88d5760320	2623	else
kenjiArai	0:5b88d5760320	2624	{
kenjiArai	0:5b88d5760320	2625	*r_parent = fallback_parent;
kenjiArai	0:5b88d5760320	2626	*r_signature_is_good = fallback_signature_is_good;
kenjiArai	0:5b88d5760320	2627	}
kenjiArai	0:5b88d5760320	2628
kenjiArai	0:5b88d5760320	2629	return( 0 );
kenjiArai	0:5b88d5760320	2630	}
kenjiArai	0:5b88d5760320	2631
kenjiArai	0:5b88d5760320	2632	/*
kenjiArai	0:5b88d5760320	2633	* Find a parent in trusted CAs or the provided chain, or return NULL.
kenjiArai	0:5b88d5760320	2634	*
kenjiArai	0:5b88d5760320	2635	* Searches in trusted CAs first, and return the first suitable parent found
kenjiArai	0:5b88d5760320	2636	* (see find_parent_in() for definition of suitable).
kenjiArai	0:5b88d5760320	2637	*
kenjiArai	0:5b88d5760320	2638	* Arguments:
kenjiArai	0:5b88d5760320	2639	* - [in] child: certificate for which we're looking for a parent, followed
kenjiArai	0:5b88d5760320	2640	* by a chain of possible intermediates
kenjiArai	0:5b88d5760320	2641	* - [in] trust_ca: list of locally trusted certificates
kenjiArai	0:5b88d5760320	2642	* - [out] parent: parent found (or NULL)
kenjiArai	0:5b88d5760320	2643	* - [out] parent_is_trusted: 1 if returned `parent` is trusted, or 0
kenjiArai	0:5b88d5760320	2644	* - [out] signature_is_good: 1 if child signature by parent is valid, or 0
kenjiArai	0:5b88d5760320	2645	* - [in] path_cnt: number of links in the chain so far (EE -> ... -> child)
kenjiArai	0:5b88d5760320	2646	* - [in] self_cnt: number of self-signed certs in the chain so far
kenjiArai	0:5b88d5760320	2647	* (will always be no greater than path_cnt)
kenjiArai	0:5b88d5760320	2648	* - [in-out] rs_ctx: context for restarting operations
kenjiArai	0:5b88d5760320	2649	*
kenjiArai	0:5b88d5760320	2650	* Return value:
kenjiArai	0:5b88d5760320	2651	* - 0 on success
kenjiArai	0:5b88d5760320	2652	* - MBEDTLS_ERR_ECP_IN_PROGRESS otherwise
kenjiArai	0:5b88d5760320	2653	*/
kenjiArai	0:5b88d5760320	2654	static int x509_crt_find_parent(
kenjiArai	0:5b88d5760320	2655	mbedtls_x509_crt *child,
kenjiArai	0:5b88d5760320	2656	mbedtls_x509_crt *trust_ca,
kenjiArai	0:5b88d5760320	2657	mbedtls_x509_crt **parent,
kenjiArai	0:5b88d5760320	2658	int *parent_is_trusted,
kenjiArai	0:5b88d5760320	2659	int *signature_is_good,
kenjiArai	0:5b88d5760320	2660	unsigned path_cnt,
kenjiArai	0:5b88d5760320	2661	unsigned self_cnt,
kenjiArai	0:5b88d5760320	2662	mbedtls_x509_crt_restart_ctx *rs_ctx )
kenjiArai	0:5b88d5760320	2663	{
kenjiArai	0:5b88d5760320	2664	int ret;
kenjiArai	0:5b88d5760320	2665	mbedtls_x509_crt *search_list;
kenjiArai	0:5b88d5760320	2666
kenjiArai	0:5b88d5760320	2667	*parent_is_trusted = 1;
kenjiArai	0:5b88d5760320	2668
kenjiArai	0:5b88d5760320	2669	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	2670	/* restore then clear saved state if we have some stored */
kenjiArai	0:5b88d5760320	2671	if( rs_ctx != NULL && rs_ctx->parent_is_trusted != -1 )
kenjiArai	0:5b88d5760320	2672	{
kenjiArai	0:5b88d5760320	2673	*parent_is_trusted = rs_ctx->parent_is_trusted;
kenjiArai	0:5b88d5760320	2674	rs_ctx->parent_is_trusted = -1;
kenjiArai	0:5b88d5760320	2675	}
kenjiArai	0:5b88d5760320	2676	#endif
kenjiArai	0:5b88d5760320	2677
kenjiArai	0:5b88d5760320	2678	while( 1 ) {
kenjiArai	0:5b88d5760320	2679	search_list = *parent_is_trusted ? trust_ca : child->next;
kenjiArai	0:5b88d5760320	2680
kenjiArai	0:5b88d5760320	2681	ret = x509_crt_find_parent_in( child, search_list,
kenjiArai	0:5b88d5760320	2682	parent, signature_is_good,
kenjiArai	0:5b88d5760320	2683	*parent_is_trusted,
kenjiArai	0:5b88d5760320	2684	path_cnt, self_cnt, rs_ctx );
kenjiArai	0:5b88d5760320	2685
kenjiArai	0:5b88d5760320	2686	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	2687	if( rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
kenjiArai	0:5b88d5760320	2688	{
kenjiArai	0:5b88d5760320	2689	/* save state */
kenjiArai	0:5b88d5760320	2690	rs_ctx->parent_is_trusted = *parent_is_trusted;
kenjiArai	0:5b88d5760320	2691	return( ret );
kenjiArai	0:5b88d5760320	2692	}
kenjiArai	0:5b88d5760320	2693	#else
kenjiArai	0:5b88d5760320	2694	(void) ret;
kenjiArai	0:5b88d5760320	2695	#endif
kenjiArai	0:5b88d5760320	2696
kenjiArai	0:5b88d5760320	2697	/* stop here if found or already in second iteration */
kenjiArai	0:5b88d5760320	2698	if( parent != NULL \|\| parent_is_trusted == 0 )
kenjiArai	0:5b88d5760320	2699	break;
kenjiArai	0:5b88d5760320	2700
kenjiArai	0:5b88d5760320	2701	/* prepare second iteration */
kenjiArai	0:5b88d5760320	2702	*parent_is_trusted = 0;
kenjiArai	0:5b88d5760320	2703	}
kenjiArai	0:5b88d5760320	2704
kenjiArai	0:5b88d5760320	2705	/* extra precaution against mistakes in the caller */
kenjiArai	0:5b88d5760320	2706	if( *parent == NULL )
kenjiArai	0:5b88d5760320	2707	{
kenjiArai	0:5b88d5760320	2708	*parent_is_trusted = 0;
kenjiArai	0:5b88d5760320	2709	*signature_is_good = 0;
kenjiArai	0:5b88d5760320	2710	}
kenjiArai	0:5b88d5760320	2711
kenjiArai	0:5b88d5760320	2712	return( 0 );
kenjiArai	0:5b88d5760320	2713	}
kenjiArai	0:5b88d5760320	2714
kenjiArai	0:5b88d5760320	2715	/*
kenjiArai	0:5b88d5760320	2716	* Check if an end-entity certificate is locally trusted
kenjiArai	0:5b88d5760320	2717	*
kenjiArai	0:5b88d5760320	2718	* Currently we require such certificates to be self-signed (actually only
kenjiArai	0:5b88d5760320	2719	* check for self-issued as self-signatures are not checked)
kenjiArai	0:5b88d5760320	2720	*/
kenjiArai	0:5b88d5760320	2721	static int x509_crt_check_ee_locally_trusted(
kenjiArai	0:5b88d5760320	2722	mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	2723	mbedtls_x509_crt *trust_ca )
kenjiArai	0:5b88d5760320	2724	{
kenjiArai	0:5b88d5760320	2725	mbedtls_x509_crt *cur;
kenjiArai	0:5b88d5760320	2726
kenjiArai	0:5b88d5760320	2727	/* must be self-issued */
kenjiArai	0:5b88d5760320	2728	if( x509_name_cmp( &crt->issuer, &crt->subject ) != 0 )
kenjiArai	0:5b88d5760320	2729	return( -1 );
kenjiArai	0:5b88d5760320	2730
kenjiArai	0:5b88d5760320	2731	/* look for an exact match with trusted cert */
kenjiArai	0:5b88d5760320	2732	for( cur = trust_ca; cur != NULL; cur = cur->next )
kenjiArai	0:5b88d5760320	2733	{
kenjiArai	0:5b88d5760320	2734	if( crt->raw.len == cur->raw.len &&
kenjiArai	0:5b88d5760320	2735	memcmp( crt->raw.p, cur->raw.p, crt->raw.len ) == 0 )
kenjiArai	0:5b88d5760320	2736	{
kenjiArai	0:5b88d5760320	2737	return( 0 );
kenjiArai	0:5b88d5760320	2738	}
kenjiArai	0:5b88d5760320	2739	}
kenjiArai	0:5b88d5760320	2740
kenjiArai	0:5b88d5760320	2741	/* too bad */
kenjiArai	0:5b88d5760320	2742	return( -1 );
kenjiArai	0:5b88d5760320	2743	}
kenjiArai	0:5b88d5760320	2744
kenjiArai	0:5b88d5760320	2745	/*
kenjiArai	0:5b88d5760320	2746	* Build and verify a certificate chain
kenjiArai	0:5b88d5760320	2747	*
kenjiArai	0:5b88d5760320	2748	* Given a peer-provided list of certificates EE, C1, ..., Cn and
kenjiArai	0:5b88d5760320	2749	* a list of trusted certs R1, ... Rp, try to build and verify a chain
kenjiArai	0:5b88d5760320	2750	* EE, Ci1, ... Ciq [, Rj]
kenjiArai	0:5b88d5760320	2751	* such that every cert in the chain is a child of the next one,
kenjiArai	0:5b88d5760320	2752	* jumping to a trusted root as early as possible.
kenjiArai	0:5b88d5760320	2753	*
kenjiArai	0:5b88d5760320	2754	* Verify that chain and return it with flags for all issues found.
kenjiArai	0:5b88d5760320	2755	*
kenjiArai	0:5b88d5760320	2756	* Special cases:
kenjiArai	0:5b88d5760320	2757	* - EE == Rj -> return a one-element list containing it
kenjiArai	0:5b88d5760320	2758	* - EE, Ci1, ..., Ciq cannot be continued with a trusted root
kenjiArai	0:5b88d5760320	2759	* -> return that chain with NOT_TRUSTED set on Ciq
kenjiArai	0:5b88d5760320	2760	*
kenjiArai	0:5b88d5760320	2761	* Tests for (aspects of) this function should include at least:
kenjiArai	0:5b88d5760320	2762	* - trusted EE
kenjiArai	0:5b88d5760320	2763	* - EE -> trusted root
kenjiArai	0:5b88d5760320	2764	* - EE -> intermediate CA -> trusted root
kenjiArai	0:5b88d5760320	2765	* - if relevant: EE untrusted
kenjiArai	0:5b88d5760320	2766	* - if relevant: EE -> intermediate, untrusted
kenjiArai	0:5b88d5760320	2767	* with the aspect under test checked at each relevant level (EE, int, root).
kenjiArai	0:5b88d5760320	2768	* For some aspects longer chains are required, but usually length 2 is
kenjiArai	0:5b88d5760320	2769	* enough (but length 1 is not in general).
kenjiArai	0:5b88d5760320	2770	*
kenjiArai	0:5b88d5760320	2771	* Arguments:
kenjiArai	0:5b88d5760320	2772	* - [in] crt: the cert list EE, C1, ..., Cn
kenjiArai	0:5b88d5760320	2773	* - [in] trust_ca: the trusted list R1, ..., Rp
kenjiArai	0:5b88d5760320	2774	* - [in] ca_crl, profile: as in verify_with_profile()
kenjiArai	0:5b88d5760320	2775	* - [out] ver_chain: the built and verified chain
kenjiArai	0:5b88d5760320	2776	* Only valid when return value is 0, may contain garbage otherwise!
kenjiArai	0:5b88d5760320	2777	* Restart note: need not be the same when calling again to resume.
kenjiArai	0:5b88d5760320	2778	* - [in-out] rs_ctx: context for restarting operations
kenjiArai	0:5b88d5760320	2779	*
kenjiArai	0:5b88d5760320	2780	* Return value:
kenjiArai	0:5b88d5760320	2781	* - non-zero if the chain could not be fully built and examined
kenjiArai	0:5b88d5760320	2782	* - 0 is the chain was successfully built and examined,
kenjiArai	0:5b88d5760320	2783	* even if it was found to be invalid
kenjiArai	0:5b88d5760320	2784	*/
kenjiArai	0:5b88d5760320	2785	static int x509_crt_verify_chain(
kenjiArai	0:5b88d5760320	2786	mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	2787	mbedtls_x509_crt *trust_ca,
kenjiArai	0:5b88d5760320	2788	mbedtls_x509_crl *ca_crl,
kenjiArai	0:5b88d5760320	2789	mbedtls_x509_crt_ca_cb_t f_ca_cb,
kenjiArai	0:5b88d5760320	2790	void *p_ca_cb,
kenjiArai	0:5b88d5760320	2791	const mbedtls_x509_crt_profile *profile,
kenjiArai	0:5b88d5760320	2792	mbedtls_x509_crt_verify_chain *ver_chain,
kenjiArai	0:5b88d5760320	2793	mbedtls_x509_crt_restart_ctx *rs_ctx )
kenjiArai	0:5b88d5760320	2794	{
kenjiArai	0:5b88d5760320	2795	/* Don't initialize any of those variables here, so that the compiler can
kenjiArai	0:5b88d5760320	2796	* catch potential issues with jumping ahead when restarting */
kenjiArai	0:5b88d5760320	2797	int ret;
kenjiArai	0:5b88d5760320	2798	uint32_t *flags;
kenjiArai	0:5b88d5760320	2799	mbedtls_x509_crt_verify_chain_item *cur;
kenjiArai	0:5b88d5760320	2800	mbedtls_x509_crt *child;
kenjiArai	0:5b88d5760320	2801	mbedtls_x509_crt *parent;
kenjiArai	0:5b88d5760320	2802	int parent_is_trusted;
kenjiArai	0:5b88d5760320	2803	int child_is_trusted;
kenjiArai	0:5b88d5760320	2804	int signature_is_good;
kenjiArai	0:5b88d5760320	2805	unsigned self_cnt;
kenjiArai	0:5b88d5760320	2806	mbedtls_x509_crt *cur_trust_ca = NULL;
kenjiArai	0:5b88d5760320	2807
kenjiArai	0:5b88d5760320	2808	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	2809	/* resume if we had an operation in progress */
kenjiArai	0:5b88d5760320	2810	if( rs_ctx != NULL && rs_ctx->in_progress == x509_crt_rs_find_parent )
kenjiArai	0:5b88d5760320	2811	{
kenjiArai	0:5b88d5760320	2812	/* restore saved state */
kenjiArai	0:5b88d5760320	2813	ver_chain = rs_ctx->ver_chain; / struct copy */
kenjiArai	0:5b88d5760320	2814	self_cnt = rs_ctx->self_cnt;
kenjiArai	0:5b88d5760320	2815
kenjiArai	0:5b88d5760320	2816	/* restore derived state */
kenjiArai	0:5b88d5760320	2817	cur = &ver_chain->items[ver_chain->len - 1];
kenjiArai	0:5b88d5760320	2818	child = cur->crt;
kenjiArai	0:5b88d5760320	2819	flags = &cur->flags;
kenjiArai	0:5b88d5760320	2820
kenjiArai	0:5b88d5760320	2821	goto find_parent;
kenjiArai	0:5b88d5760320	2822	}
kenjiArai	0:5b88d5760320	2823	#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */
kenjiArai	0:5b88d5760320	2824
kenjiArai	0:5b88d5760320	2825	child = crt;
kenjiArai	0:5b88d5760320	2826	self_cnt = 0;
kenjiArai	0:5b88d5760320	2827	parent_is_trusted = 0;
kenjiArai	0:5b88d5760320	2828	child_is_trusted = 0;
kenjiArai	0:5b88d5760320	2829
kenjiArai	0:5b88d5760320	2830	while( 1 ) {
kenjiArai	0:5b88d5760320	2831	/* Add certificate to the verification chain */
kenjiArai	0:5b88d5760320	2832	cur = &ver_chain->items[ver_chain->len];
kenjiArai	0:5b88d5760320	2833	cur->crt = child;
kenjiArai	0:5b88d5760320	2834	cur->flags = 0;
kenjiArai	0:5b88d5760320	2835	ver_chain->len++;
kenjiArai	0:5b88d5760320	2836	flags = &cur->flags;
kenjiArai	0:5b88d5760320	2837
kenjiArai	0:5b88d5760320	2838	/* Check time-validity (all certificates) */
kenjiArai	0:5b88d5760320	2839	if( mbedtls_x509_time_is_past( &child->valid_to ) )
kenjiArai	0:5b88d5760320	2840	*flags \|= MBEDTLS_X509_BADCERT_EXPIRED;
kenjiArai	0:5b88d5760320	2841
kenjiArai	0:5b88d5760320	2842	if( mbedtls_x509_time_is_future( &child->valid_from ) )
kenjiArai	0:5b88d5760320	2843	*flags \|= MBEDTLS_X509_BADCERT_FUTURE;
kenjiArai	0:5b88d5760320	2844
kenjiArai	0:5b88d5760320	2845	/* Stop here for trusted roots (but not for trusted EE certs) */
kenjiArai	0:5b88d5760320	2846	if( child_is_trusted )
kenjiArai	0:5b88d5760320	2847	return( 0 );
kenjiArai	0:5b88d5760320	2848
kenjiArai	0:5b88d5760320	2849	/* Check signature algorithm: MD & PK algs */
kenjiArai	0:5b88d5760320	2850	if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
kenjiArai	0:5b88d5760320	2851	*flags \|= MBEDTLS_X509_BADCERT_BAD_MD;
kenjiArai	0:5b88d5760320	2852
kenjiArai	0:5b88d5760320	2853	if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
kenjiArai	0:5b88d5760320	2854	*flags \|= MBEDTLS_X509_BADCERT_BAD_PK;
kenjiArai	0:5b88d5760320	2855
kenjiArai	0:5b88d5760320	2856	/* Special case: EE certs that are locally trusted */
kenjiArai	0:5b88d5760320	2857	if( ver_chain->len == 1 &&
kenjiArai	0:5b88d5760320	2858	x509_crt_check_ee_locally_trusted( child, trust_ca ) == 0 )
kenjiArai	0:5b88d5760320	2859	{
kenjiArai	0:5b88d5760320	2860	return( 0 );
kenjiArai	0:5b88d5760320	2861	}
kenjiArai	0:5b88d5760320	2862
kenjiArai	0:5b88d5760320	2863	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	2864	find_parent:
kenjiArai	0:5b88d5760320	2865	#endif
kenjiArai	0:5b88d5760320	2866
kenjiArai	0:5b88d5760320	2867	/* Obtain list of potential trusted signers from CA callback,
kenjiArai	0:5b88d5760320	2868	* or use statically provided list. */
kenjiArai	0:5b88d5760320	2869	#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
kenjiArai	0:5b88d5760320	2870	if( f_ca_cb != NULL )
kenjiArai	0:5b88d5760320	2871	{
kenjiArai	0:5b88d5760320	2872	mbedtls_x509_crt_free( ver_chain->trust_ca_cb_result );
kenjiArai	0:5b88d5760320	2873	mbedtls_free( ver_chain->trust_ca_cb_result );
kenjiArai	0:5b88d5760320	2874	ver_chain->trust_ca_cb_result = NULL;
kenjiArai	0:5b88d5760320	2875
kenjiArai	0:5b88d5760320	2876	ret = f_ca_cb( p_ca_cb, child, &ver_chain->trust_ca_cb_result );
kenjiArai	0:5b88d5760320	2877	if( ret != 0 )
kenjiArai	0:5b88d5760320	2878	return( MBEDTLS_ERR_X509_FATAL_ERROR );
kenjiArai	0:5b88d5760320	2879
kenjiArai	0:5b88d5760320	2880	cur_trust_ca = ver_chain->trust_ca_cb_result;
kenjiArai	0:5b88d5760320	2881	}
kenjiArai	0:5b88d5760320	2882	else
kenjiArai	0:5b88d5760320	2883	#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
kenjiArai	0:5b88d5760320	2884	{
kenjiArai	0:5b88d5760320	2885	((void) f_ca_cb);
kenjiArai	0:5b88d5760320	2886	((void) p_ca_cb);
kenjiArai	0:5b88d5760320	2887	cur_trust_ca = trust_ca;
kenjiArai	0:5b88d5760320	2888	}
kenjiArai	0:5b88d5760320	2889
kenjiArai	0:5b88d5760320	2890	/* Look for a parent in trusted CAs or up the chain */
kenjiArai	0:5b88d5760320	2891	ret = x509_crt_find_parent( child, cur_trust_ca, &parent,
kenjiArai	0:5b88d5760320	2892	&parent_is_trusted, &signature_is_good,
kenjiArai	0:5b88d5760320	2893	ver_chain->len - 1, self_cnt, rs_ctx );
kenjiArai	0:5b88d5760320	2894
kenjiArai	0:5b88d5760320	2895	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	2896	if( rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
kenjiArai	0:5b88d5760320	2897	{
kenjiArai	0:5b88d5760320	2898	/* save state */
kenjiArai	0:5b88d5760320	2899	rs_ctx->in_progress = x509_crt_rs_find_parent;
kenjiArai	0:5b88d5760320	2900	rs_ctx->self_cnt = self_cnt;
kenjiArai	0:5b88d5760320	2901	rs_ctx->ver_chain = ver_chain; / struct copy */
kenjiArai	0:5b88d5760320	2902
kenjiArai	0:5b88d5760320	2903	return( ret );
kenjiArai	0:5b88d5760320	2904	}
kenjiArai	0:5b88d5760320	2905	#else
kenjiArai	0:5b88d5760320	2906	(void) ret;
kenjiArai	0:5b88d5760320	2907	#endif
kenjiArai	0:5b88d5760320	2908
kenjiArai	0:5b88d5760320	2909	/* No parent? We're done here */
kenjiArai	0:5b88d5760320	2910	if( parent == NULL )
kenjiArai	0:5b88d5760320	2911	{
kenjiArai	0:5b88d5760320	2912	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
kenjiArai	0:5b88d5760320	2913	return( 0 );
kenjiArai	0:5b88d5760320	2914	}
kenjiArai	0:5b88d5760320	2915
kenjiArai	0:5b88d5760320	2916	/* Count intermediate self-issued (not necessarily self-signed) certs.
kenjiArai	0:5b88d5760320	2917	* These can occur with some strategies for key rollover, see [SIRO],
kenjiArai	0:5b88d5760320	2918	* and should be excluded from max_pathlen checks. */
kenjiArai	0:5b88d5760320	2919	if( ver_chain->len != 1 &&
kenjiArai	0:5b88d5760320	2920	x509_name_cmp( &child->issuer, &child->subject ) == 0 )
kenjiArai	0:5b88d5760320	2921	{
kenjiArai	0:5b88d5760320	2922	self_cnt++;
kenjiArai	0:5b88d5760320	2923	}
kenjiArai	0:5b88d5760320	2924
kenjiArai	0:5b88d5760320	2925	/* path_cnt is 0 for the first intermediate CA,
kenjiArai	0:5b88d5760320	2926	* and if parent is trusted it's not an intermediate CA */
kenjiArai	0:5b88d5760320	2927	if( ! parent_is_trusted &&
kenjiArai	0:5b88d5760320	2928	ver_chain->len > MBEDTLS_X509_MAX_INTERMEDIATE_CA )
kenjiArai	0:5b88d5760320	2929	{
kenjiArai	0:5b88d5760320	2930	/* return immediately to avoid overflow the chain array */
kenjiArai	0:5b88d5760320	2931	return( MBEDTLS_ERR_X509_FATAL_ERROR );
kenjiArai	0:5b88d5760320	2932	}
kenjiArai	0:5b88d5760320	2933
kenjiArai	0:5b88d5760320	2934	/* signature was checked while searching parent */
kenjiArai	0:5b88d5760320	2935	if( ! signature_is_good )
kenjiArai	0:5b88d5760320	2936	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
kenjiArai	0:5b88d5760320	2937
kenjiArai	0:5b88d5760320	2938	/* check size of signing key */
kenjiArai	0:5b88d5760320	2939	if( x509_profile_check_key( profile, &parent->pk ) != 0 )
kenjiArai	0:5b88d5760320	2940	*flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
kenjiArai	0:5b88d5760320	2941
kenjiArai	0:5b88d5760320	2942	#if defined(MBEDTLS_X509_CRL_PARSE_C)
kenjiArai	0:5b88d5760320	2943	/* Check trusted CA's CRL for the given crt */
kenjiArai	0:5b88d5760320	2944	*flags \|= x509_crt_verifycrl( child, parent, ca_crl, profile );
kenjiArai	0:5b88d5760320	2945	#else
kenjiArai	0:5b88d5760320	2946	(void) ca_crl;
kenjiArai	0:5b88d5760320	2947	#endif
kenjiArai	0:5b88d5760320	2948
kenjiArai	0:5b88d5760320	2949	/* prepare for next iteration */
kenjiArai	0:5b88d5760320	2950	child = parent;
kenjiArai	0:5b88d5760320	2951	parent = NULL;
kenjiArai	0:5b88d5760320	2952	child_is_trusted = parent_is_trusted;
kenjiArai	0:5b88d5760320	2953	signature_is_good = 0;
kenjiArai	0:5b88d5760320	2954	}
kenjiArai	0:5b88d5760320	2955	}
kenjiArai	0:5b88d5760320	2956
kenjiArai	0:5b88d5760320	2957	/*
kenjiArai	0:5b88d5760320	2958	* Check for CN match
kenjiArai	0:5b88d5760320	2959	*/
kenjiArai	0:5b88d5760320	2960	static int x509_crt_check_cn( const mbedtls_x509_buf *name,
kenjiArai	0:5b88d5760320	2961	const char *cn, size_t cn_len )
kenjiArai	0:5b88d5760320	2962	{
kenjiArai	0:5b88d5760320	2963	/* try exact match */
kenjiArai	0:5b88d5760320	2964	if( name->len == cn_len &&
kenjiArai	0:5b88d5760320	2965	x509_memcasecmp( cn, name->p, cn_len ) == 0 )
kenjiArai	0:5b88d5760320	2966	{
kenjiArai	0:5b88d5760320	2967	return( 0 );
kenjiArai	0:5b88d5760320	2968	}
kenjiArai	0:5b88d5760320	2969
kenjiArai	0:5b88d5760320	2970	/* try wildcard match */
kenjiArai	0:5b88d5760320	2971	if( x509_check_wildcard( cn, name ) == 0 )
kenjiArai	0:5b88d5760320	2972	{
kenjiArai	0:5b88d5760320	2973	return( 0 );
kenjiArai	0:5b88d5760320	2974	}
kenjiArai	0:5b88d5760320	2975
kenjiArai	0:5b88d5760320	2976	return( -1 );
kenjiArai	0:5b88d5760320	2977	}
kenjiArai	0:5b88d5760320	2978
kenjiArai	0:5b88d5760320	2979	/*
kenjiArai	0:5b88d5760320	2980	* Verify the requested CN - only call this if cn is not NULL!
kenjiArai	0:5b88d5760320	2981	*/
kenjiArai	0:5b88d5760320	2982	static void x509_crt_verify_name( const mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	2983	const char *cn,
kenjiArai	0:5b88d5760320	2984	uint32_t *flags )
kenjiArai	0:5b88d5760320	2985	{
kenjiArai	0:5b88d5760320	2986	const mbedtls_x509_name *name;
kenjiArai	0:5b88d5760320	2987	const mbedtls_x509_sequence *cur;
kenjiArai	0:5b88d5760320	2988	size_t cn_len = strlen( cn );
kenjiArai	0:5b88d5760320	2989
kenjiArai	0:5b88d5760320	2990	if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
kenjiArai	0:5b88d5760320	2991	{
kenjiArai	0:5b88d5760320	2992	for( cur = &crt->subject_alt_names; cur != NULL; cur = cur->next )
kenjiArai	0:5b88d5760320	2993	{
kenjiArai	0:5b88d5760320	2994	if( x509_crt_check_cn( &cur->buf, cn, cn_len ) == 0 )
kenjiArai	0:5b88d5760320	2995	break;
kenjiArai	0:5b88d5760320	2996	}
kenjiArai	0:5b88d5760320	2997
kenjiArai	0:5b88d5760320	2998	if( cur == NULL )
kenjiArai	0:5b88d5760320	2999	*flags \|= MBEDTLS_X509_BADCERT_CN_MISMATCH;
kenjiArai	0:5b88d5760320	3000	}
kenjiArai	0:5b88d5760320	3001	else
kenjiArai	0:5b88d5760320	3002	{
kenjiArai	0:5b88d5760320	3003	for( name = &crt->subject; name != NULL; name = name->next )
kenjiArai	0:5b88d5760320	3004	{
kenjiArai	0:5b88d5760320	3005	if( MBEDTLS_OID_CMP( MBEDTLS_OID_AT_CN, &name->oid ) == 0 &&
kenjiArai	0:5b88d5760320	3006	x509_crt_check_cn( &name->val, cn, cn_len ) == 0 )
kenjiArai	0:5b88d5760320	3007	{
kenjiArai	0:5b88d5760320	3008	break;
kenjiArai	0:5b88d5760320	3009	}
kenjiArai	0:5b88d5760320	3010	}
kenjiArai	0:5b88d5760320	3011
kenjiArai	0:5b88d5760320	3012	if( name == NULL )
kenjiArai	0:5b88d5760320	3013	*flags \|= MBEDTLS_X509_BADCERT_CN_MISMATCH;
kenjiArai	0:5b88d5760320	3014	}
kenjiArai	0:5b88d5760320	3015	}
kenjiArai	0:5b88d5760320	3016
kenjiArai	0:5b88d5760320	3017	/*
kenjiArai	0:5b88d5760320	3018	* Merge the flags for all certs in the chain, after calling callback
kenjiArai	0:5b88d5760320	3019	*/
kenjiArai	0:5b88d5760320	3020	static int x509_crt_merge_flags_with_cb(
kenjiArai	0:5b88d5760320	3021	uint32_t *flags,
kenjiArai	0:5b88d5760320	3022	const mbedtls_x509_crt_verify_chain *ver_chain,
kenjiArai	0:5b88d5760320	3023	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
kenjiArai	0:5b88d5760320	3024	void *p_vrfy )
kenjiArai	0:5b88d5760320	3025	{
kenjiArai	0:5b88d5760320	3026	int ret;
kenjiArai	0:5b88d5760320	3027	unsigned i;
kenjiArai	0:5b88d5760320	3028	uint32_t cur_flags;
kenjiArai	0:5b88d5760320	3029	const mbedtls_x509_crt_verify_chain_item *cur;
kenjiArai	0:5b88d5760320	3030
kenjiArai	0:5b88d5760320	3031	for( i = ver_chain->len; i != 0; --i )
kenjiArai	0:5b88d5760320	3032	{
kenjiArai	0:5b88d5760320	3033	cur = &ver_chain->items[i-1];
kenjiArai	0:5b88d5760320	3034	cur_flags = cur->flags;
kenjiArai	0:5b88d5760320	3035
kenjiArai	0:5b88d5760320	3036	if( NULL != f_vrfy )
kenjiArai	0:5b88d5760320	3037	if( ( ret = f_vrfy( p_vrfy, cur->crt, (int) i-1, &cur_flags ) ) != 0 )
kenjiArai	0:5b88d5760320	3038	return( ret );
kenjiArai	0:5b88d5760320	3039
kenjiArai	0:5b88d5760320	3040	*flags \|= cur_flags;
kenjiArai	0:5b88d5760320	3041	}
kenjiArai	0:5b88d5760320	3042
kenjiArai	0:5b88d5760320	3043	return( 0 );
kenjiArai	0:5b88d5760320	3044	}
kenjiArai	0:5b88d5760320	3045
kenjiArai	0:5b88d5760320	3046	/*
kenjiArai	0:5b88d5760320	3047	* Verify the certificate validity, with profile, restartable version
kenjiArai	0:5b88d5760320	3048	*
kenjiArai	0:5b88d5760320	3049	* This function:
kenjiArai	0:5b88d5760320	3050	* - checks the requested CN (if any)
kenjiArai	0:5b88d5760320	3051	* - checks the type and size of the EE cert's key,
kenjiArai	0:5b88d5760320	3052	* as that isn't done as part of chain building/verification currently
kenjiArai	0:5b88d5760320	3053	* - builds and verifies the chain
kenjiArai	0:5b88d5760320	3054	* - then calls the callback and merges the flags
kenjiArai	0:5b88d5760320	3055	*
kenjiArai	0:5b88d5760320	3056	* The parameters pairs `trust_ca`, `ca_crl` and `f_ca_cb`, `p_ca_cb`
kenjiArai	0:5b88d5760320	3057	* are mutually exclusive: If `f_ca_cb != NULL`, it will be used by the
kenjiArai	0:5b88d5760320	3058	* verification routine to search for trusted signers, and CRLs will
kenjiArai	0:5b88d5760320	3059	* be disabled. Otherwise, `trust_ca` will be used as the static list
kenjiArai	0:5b88d5760320	3060	* of trusted signers, and `ca_crl` will be use as the static list
kenjiArai	0:5b88d5760320	3061	* of CRLs.
kenjiArai	0:5b88d5760320	3062	*/
kenjiArai	0:5b88d5760320	3063	static int x509_crt_verify_restartable_ca_cb( mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	3064	mbedtls_x509_crt *trust_ca,
kenjiArai	0:5b88d5760320	3065	mbedtls_x509_crl *ca_crl,
kenjiArai	0:5b88d5760320	3066	mbedtls_x509_crt_ca_cb_t f_ca_cb,
kenjiArai	0:5b88d5760320	3067	void *p_ca_cb,
kenjiArai	0:5b88d5760320	3068	const mbedtls_x509_crt_profile *profile,
kenjiArai	0:5b88d5760320	3069	const char cn, uint32_t flags,
kenjiArai	0:5b88d5760320	3070	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
kenjiArai	0:5b88d5760320	3071	void *p_vrfy,
kenjiArai	0:5b88d5760320	3072	mbedtls_x509_crt_restart_ctx *rs_ctx )
kenjiArai	0:5b88d5760320	3073	{
kenjiArai	0:5b88d5760320	3074	int ret;
kenjiArai	0:5b88d5760320	3075	mbedtls_pk_type_t pk_type;
kenjiArai	0:5b88d5760320	3076	mbedtls_x509_crt_verify_chain ver_chain;
kenjiArai	0:5b88d5760320	3077	uint32_t ee_flags;
kenjiArai	0:5b88d5760320	3078
kenjiArai	0:5b88d5760320	3079	*flags = 0;
kenjiArai	0:5b88d5760320	3080	ee_flags = 0;
kenjiArai	0:5b88d5760320	3081	x509_crt_verify_chain_reset( &ver_chain );
kenjiArai	0:5b88d5760320	3082
kenjiArai	0:5b88d5760320	3083	if( profile == NULL )
kenjiArai	0:5b88d5760320	3084	{
kenjiArai	0:5b88d5760320	3085	ret = MBEDTLS_ERR_X509_BAD_INPUT_DATA;
kenjiArai	0:5b88d5760320	3086	goto exit;
kenjiArai	0:5b88d5760320	3087	}
kenjiArai	0:5b88d5760320	3088
kenjiArai	0:5b88d5760320	3089	/* check name if requested */
kenjiArai	0:5b88d5760320	3090	if( cn != NULL )
kenjiArai	0:5b88d5760320	3091	x509_crt_verify_name( crt, cn, &ee_flags );
kenjiArai	0:5b88d5760320	3092
kenjiArai	0:5b88d5760320	3093	/* Check the type and size of the key */
kenjiArai	0:5b88d5760320	3094	pk_type = mbedtls_pk_get_type( &crt->pk );
kenjiArai	0:5b88d5760320	3095
kenjiArai	0:5b88d5760320	3096	if( x509_profile_check_pk_alg( profile, pk_type ) != 0 )
kenjiArai	0:5b88d5760320	3097	ee_flags \|= MBEDTLS_X509_BADCERT_BAD_PK;
kenjiArai	0:5b88d5760320	3098
kenjiArai	0:5b88d5760320	3099	if( x509_profile_check_key( profile, &crt->pk ) != 0 )
kenjiArai	0:5b88d5760320	3100	ee_flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
kenjiArai	0:5b88d5760320	3101
kenjiArai	0:5b88d5760320	3102	/* Check the chain */
kenjiArai	0:5b88d5760320	3103	ret = x509_crt_verify_chain( crt, trust_ca, ca_crl,
kenjiArai	0:5b88d5760320	3104	f_ca_cb, p_ca_cb, profile,
kenjiArai	0:5b88d5760320	3105	&ver_chain, rs_ctx );
kenjiArai	0:5b88d5760320	3106
kenjiArai	0:5b88d5760320	3107	if( ret != 0 )
kenjiArai	0:5b88d5760320	3108	goto exit;
kenjiArai	0:5b88d5760320	3109
kenjiArai	0:5b88d5760320	3110	/* Merge end-entity flags */
kenjiArai	0:5b88d5760320	3111	ver_chain.items[0].flags \|= ee_flags;
kenjiArai	0:5b88d5760320	3112
kenjiArai	0:5b88d5760320	3113	/* Build final flags, calling callback on the way if any */
kenjiArai	0:5b88d5760320	3114	ret = x509_crt_merge_flags_with_cb( flags, &ver_chain, f_vrfy, p_vrfy );
kenjiArai	0:5b88d5760320	3115
kenjiArai	0:5b88d5760320	3116	exit:
kenjiArai	0:5b88d5760320	3117
kenjiArai	0:5b88d5760320	3118	#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
kenjiArai	0:5b88d5760320	3119	mbedtls_x509_crt_free( ver_chain.trust_ca_cb_result );
kenjiArai	0:5b88d5760320	3120	mbedtls_free( ver_chain.trust_ca_cb_result );
kenjiArai	0:5b88d5760320	3121	ver_chain.trust_ca_cb_result = NULL;
kenjiArai	0:5b88d5760320	3122	#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
kenjiArai	0:5b88d5760320	3123
kenjiArai	0:5b88d5760320	3124	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	3125	if( rs_ctx != NULL && ret != MBEDTLS_ERR_ECP_IN_PROGRESS )
kenjiArai	0:5b88d5760320	3126	mbedtls_x509_crt_restart_free( rs_ctx );
kenjiArai	0:5b88d5760320	3127	#endif
kenjiArai	0:5b88d5760320	3128
kenjiArai	0:5b88d5760320	3129	/* prevent misuse of the vrfy callback - VERIFY_FAILED would be ignored by
kenjiArai	0:5b88d5760320	3130	* the SSL module for authmode optional, but non-zero return from the
kenjiArai	0:5b88d5760320	3131	* callback means a fatal error so it shouldn't be ignored */
kenjiArai	0:5b88d5760320	3132	if( ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED )
kenjiArai	0:5b88d5760320	3133	ret = MBEDTLS_ERR_X509_FATAL_ERROR;
kenjiArai	0:5b88d5760320	3134
kenjiArai	0:5b88d5760320	3135	if( ret != 0 )
kenjiArai	0:5b88d5760320	3136	{
kenjiArai	0:5b88d5760320	3137	*flags = (uint32_t) -1;
kenjiArai	0:5b88d5760320	3138	return( ret );
kenjiArai	0:5b88d5760320	3139	}
kenjiArai	0:5b88d5760320	3140
kenjiArai	0:5b88d5760320	3141	if( *flags != 0 )
kenjiArai	0:5b88d5760320	3142	return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
kenjiArai	0:5b88d5760320	3143
kenjiArai	0:5b88d5760320	3144	return( 0 );
kenjiArai	0:5b88d5760320	3145	}
kenjiArai	0:5b88d5760320	3146
kenjiArai	0:5b88d5760320	3147
kenjiArai	0:5b88d5760320	3148	/*
kenjiArai	0:5b88d5760320	3149	* Verify the certificate validity (default profile, not restartable)
kenjiArai	0:5b88d5760320	3150	*/
kenjiArai	0:5b88d5760320	3151	int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	3152	mbedtls_x509_crt *trust_ca,
kenjiArai	0:5b88d5760320	3153	mbedtls_x509_crl *ca_crl,
kenjiArai	0:5b88d5760320	3154	const char cn, uint32_t flags,
kenjiArai	0:5b88d5760320	3155	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
kenjiArai	0:5b88d5760320	3156	void *p_vrfy )
kenjiArai	0:5b88d5760320	3157	{
kenjiArai	0:5b88d5760320	3158	return( x509_crt_verify_restartable_ca_cb( crt, trust_ca, ca_crl,
kenjiArai	0:5b88d5760320	3159	NULL, NULL,
kenjiArai	0:5b88d5760320	3160	&mbedtls_x509_crt_profile_default,
kenjiArai	0:5b88d5760320	3161	cn, flags,
kenjiArai	0:5b88d5760320	3162	f_vrfy, p_vrfy, NULL ) );
kenjiArai	0:5b88d5760320	3163	}
kenjiArai	0:5b88d5760320	3164
kenjiArai	0:5b88d5760320	3165	/*
kenjiArai	0:5b88d5760320	3166	* Verify the certificate validity (user-chosen profile, not restartable)
kenjiArai	0:5b88d5760320	3167	*/
kenjiArai	0:5b88d5760320	3168	int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	3169	mbedtls_x509_crt *trust_ca,
kenjiArai	0:5b88d5760320	3170	mbedtls_x509_crl *ca_crl,
kenjiArai	0:5b88d5760320	3171	const mbedtls_x509_crt_profile *profile,
kenjiArai	0:5b88d5760320	3172	const char cn, uint32_t flags,
kenjiArai	0:5b88d5760320	3173	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
kenjiArai	0:5b88d5760320	3174	void *p_vrfy )
kenjiArai	0:5b88d5760320	3175	{
kenjiArai	0:5b88d5760320	3176	return( x509_crt_verify_restartable_ca_cb( crt, trust_ca, ca_crl,
kenjiArai	0:5b88d5760320	3177	NULL, NULL,
kenjiArai	0:5b88d5760320	3178	profile, cn, flags,
kenjiArai	0:5b88d5760320	3179	f_vrfy, p_vrfy, NULL ) );
kenjiArai	0:5b88d5760320	3180	}
kenjiArai	0:5b88d5760320	3181
kenjiArai	0:5b88d5760320	3182	#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
kenjiArai	0:5b88d5760320	3183	/*
kenjiArai	0:5b88d5760320	3184	* Verify the certificate validity (user-chosen profile, CA callback,
kenjiArai	0:5b88d5760320	3185	* not restartable).
kenjiArai	0:5b88d5760320	3186	*/
kenjiArai	0:5b88d5760320	3187	int mbedtls_x509_crt_verify_with_ca_cb( mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	3188	mbedtls_x509_crt_ca_cb_t f_ca_cb,
kenjiArai	0:5b88d5760320	3189	void *p_ca_cb,
kenjiArai	0:5b88d5760320	3190	const mbedtls_x509_crt_profile *profile,
kenjiArai	0:5b88d5760320	3191	const char cn, uint32_t flags,
kenjiArai	0:5b88d5760320	3192	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
kenjiArai	0:5b88d5760320	3193	void *p_vrfy )
kenjiArai	0:5b88d5760320	3194	{
kenjiArai	0:5b88d5760320	3195	return( x509_crt_verify_restartable_ca_cb( crt, NULL, NULL,
kenjiArai	0:5b88d5760320	3196	f_ca_cb, p_ca_cb,
kenjiArai	0:5b88d5760320	3197	profile, cn, flags,
kenjiArai	0:5b88d5760320	3198	f_vrfy, p_vrfy, NULL ) );
kenjiArai	0:5b88d5760320	3199	}
kenjiArai	0:5b88d5760320	3200	#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
kenjiArai	0:5b88d5760320	3201
kenjiArai	0:5b88d5760320	3202	int mbedtls_x509_crt_verify_restartable( mbedtls_x509_crt *crt,
kenjiArai	0:5b88d5760320	3203	mbedtls_x509_crt *trust_ca,
kenjiArai	0:5b88d5760320	3204	mbedtls_x509_crl *ca_crl,
kenjiArai	0:5b88d5760320	3205	const mbedtls_x509_crt_profile *profile,
kenjiArai	0:5b88d5760320	3206	const char cn, uint32_t flags,
kenjiArai	0:5b88d5760320	3207	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
kenjiArai	0:5b88d5760320	3208	void *p_vrfy,
kenjiArai	0:5b88d5760320	3209	mbedtls_x509_crt_restart_ctx *rs_ctx )
kenjiArai	0:5b88d5760320	3210	{
kenjiArai	0:5b88d5760320	3211	return( x509_crt_verify_restartable_ca_cb( crt, trust_ca, ca_crl,
kenjiArai	0:5b88d5760320	3212	NULL, NULL,
kenjiArai	0:5b88d5760320	3213	profile, cn, flags,
kenjiArai	0:5b88d5760320	3214	f_vrfy, p_vrfy, rs_ctx ) );
kenjiArai	0:5b88d5760320	3215	}
kenjiArai	0:5b88d5760320	3216
kenjiArai	0:5b88d5760320	3217
kenjiArai	0:5b88d5760320	3218	/*
kenjiArai	0:5b88d5760320	3219	* Initialize a certificate chain
kenjiArai	0:5b88d5760320	3220	*/
kenjiArai	0:5b88d5760320	3221	void mbedtls_x509_crt_init( mbedtls_x509_crt *crt )
kenjiArai	0:5b88d5760320	3222	{
kenjiArai	0:5b88d5760320	3223	memset( crt, 0, sizeof(mbedtls_x509_crt) );
kenjiArai	0:5b88d5760320	3224	}
kenjiArai	0:5b88d5760320	3225
kenjiArai	0:5b88d5760320	3226	/*
kenjiArai	0:5b88d5760320	3227	* Unallocate all certificate data
kenjiArai	0:5b88d5760320	3228	*/
kenjiArai	0:5b88d5760320	3229	void mbedtls_x509_crt_free( mbedtls_x509_crt *crt )
kenjiArai	0:5b88d5760320	3230	{
kenjiArai	0:5b88d5760320	3231	mbedtls_x509_crt *cert_cur = crt;
kenjiArai	0:5b88d5760320	3232	mbedtls_x509_crt *cert_prv;
kenjiArai	0:5b88d5760320	3233	mbedtls_x509_name *name_cur;
kenjiArai	0:5b88d5760320	3234	mbedtls_x509_name *name_prv;
kenjiArai	0:5b88d5760320	3235	mbedtls_x509_sequence *seq_cur;
kenjiArai	0:5b88d5760320	3236	mbedtls_x509_sequence *seq_prv;
kenjiArai	0:5b88d5760320	3237
kenjiArai	0:5b88d5760320	3238	if( crt == NULL )
kenjiArai	0:5b88d5760320	3239	return;
kenjiArai	0:5b88d5760320	3240
kenjiArai	0:5b88d5760320	3241	do
kenjiArai	0:5b88d5760320	3242	{
kenjiArai	0:5b88d5760320	3243	mbedtls_pk_free( &cert_cur->pk );
kenjiArai	0:5b88d5760320	3244
kenjiArai	0:5b88d5760320	3245	#if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
kenjiArai	0:5b88d5760320	3246	mbedtls_free( cert_cur->sig_opts );
kenjiArai	0:5b88d5760320	3247	#endif
kenjiArai	0:5b88d5760320	3248
kenjiArai	0:5b88d5760320	3249	name_cur = cert_cur->issuer.next;
kenjiArai	0:5b88d5760320	3250	while( name_cur != NULL )
kenjiArai	0:5b88d5760320	3251	{
kenjiArai	0:5b88d5760320	3252	name_prv = name_cur;
kenjiArai	0:5b88d5760320	3253	name_cur = name_cur->next;
kenjiArai	0:5b88d5760320	3254	mbedtls_platform_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
kenjiArai	0:5b88d5760320	3255	mbedtls_free( name_prv );
kenjiArai	0:5b88d5760320	3256	}
kenjiArai	0:5b88d5760320	3257
kenjiArai	0:5b88d5760320	3258	name_cur = cert_cur->subject.next;
kenjiArai	0:5b88d5760320	3259	while( name_cur != NULL )
kenjiArai	0:5b88d5760320	3260	{
kenjiArai	0:5b88d5760320	3261	name_prv = name_cur;
kenjiArai	0:5b88d5760320	3262	name_cur = name_cur->next;
kenjiArai	0:5b88d5760320	3263	mbedtls_platform_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
kenjiArai	0:5b88d5760320	3264	mbedtls_free( name_prv );
kenjiArai	0:5b88d5760320	3265	}
kenjiArai	0:5b88d5760320	3266
kenjiArai	0:5b88d5760320	3267	seq_cur = cert_cur->ext_key_usage.next;
kenjiArai	0:5b88d5760320	3268	while( seq_cur != NULL )
kenjiArai	0:5b88d5760320	3269	{
kenjiArai	0:5b88d5760320	3270	seq_prv = seq_cur;
kenjiArai	0:5b88d5760320	3271	seq_cur = seq_cur->next;
kenjiArai	0:5b88d5760320	3272	mbedtls_platform_zeroize( seq_prv,
kenjiArai	0:5b88d5760320	3273	sizeof( mbedtls_x509_sequence ) );
kenjiArai	0:5b88d5760320	3274	mbedtls_free( seq_prv );
kenjiArai	0:5b88d5760320	3275	}
kenjiArai	0:5b88d5760320	3276
kenjiArai	0:5b88d5760320	3277	seq_cur = cert_cur->subject_alt_names.next;
kenjiArai	0:5b88d5760320	3278	while( seq_cur != NULL )
kenjiArai	0:5b88d5760320	3279	{
kenjiArai	0:5b88d5760320	3280	seq_prv = seq_cur;
kenjiArai	0:5b88d5760320	3281	seq_cur = seq_cur->next;
kenjiArai	0:5b88d5760320	3282	mbedtls_platform_zeroize( seq_prv,
kenjiArai	0:5b88d5760320	3283	sizeof( mbedtls_x509_sequence ) );
kenjiArai	0:5b88d5760320	3284	mbedtls_free( seq_prv );
kenjiArai	0:5b88d5760320	3285	}
kenjiArai	0:5b88d5760320	3286
kenjiArai	0:5b88d5760320	3287	seq_cur = cert_cur->certificate_policies.next;
kenjiArai	0:5b88d5760320	3288	while( seq_cur != NULL )
kenjiArai	0:5b88d5760320	3289	{
kenjiArai	0:5b88d5760320	3290	seq_prv = seq_cur;
kenjiArai	0:5b88d5760320	3291	seq_cur = seq_cur->next;
kenjiArai	0:5b88d5760320	3292	mbedtls_platform_zeroize( seq_prv,
kenjiArai	0:5b88d5760320	3293	sizeof( mbedtls_x509_sequence ) );
kenjiArai	0:5b88d5760320	3294	mbedtls_free( seq_prv );
kenjiArai	0:5b88d5760320	3295	}
kenjiArai	0:5b88d5760320	3296
kenjiArai	0:5b88d5760320	3297	if( cert_cur->raw.p != NULL && cert_cur->own_buffer )
kenjiArai	0:5b88d5760320	3298	{
kenjiArai	0:5b88d5760320	3299	mbedtls_platform_zeroize( cert_cur->raw.p, cert_cur->raw.len );
kenjiArai	0:5b88d5760320	3300	mbedtls_free( cert_cur->raw.p );
kenjiArai	0:5b88d5760320	3301	}
kenjiArai	0:5b88d5760320	3302
kenjiArai	0:5b88d5760320	3303	cert_cur = cert_cur->next;
kenjiArai	0:5b88d5760320	3304	}
kenjiArai	0:5b88d5760320	3305	while( cert_cur != NULL );
kenjiArai	0:5b88d5760320	3306
kenjiArai	0:5b88d5760320	3307	cert_cur = crt;
kenjiArai	0:5b88d5760320	3308	do
kenjiArai	0:5b88d5760320	3309	{
kenjiArai	0:5b88d5760320	3310	cert_prv = cert_cur;
kenjiArai	0:5b88d5760320	3311	cert_cur = cert_cur->next;
kenjiArai	0:5b88d5760320	3312
kenjiArai	0:5b88d5760320	3313	mbedtls_platform_zeroize( cert_prv, sizeof( mbedtls_x509_crt ) );
kenjiArai	0:5b88d5760320	3314	if( cert_prv != crt )
kenjiArai	0:5b88d5760320	3315	mbedtls_free( cert_prv );
kenjiArai	0:5b88d5760320	3316	}
kenjiArai	0:5b88d5760320	3317	while( cert_cur != NULL );
kenjiArai	0:5b88d5760320	3318	}
kenjiArai	0:5b88d5760320	3319
kenjiArai	0:5b88d5760320	3320	#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
kenjiArai	0:5b88d5760320	3321	/*
kenjiArai	0:5b88d5760320	3322	* Initialize a restart context
kenjiArai	0:5b88d5760320	3323	*/
kenjiArai	0:5b88d5760320	3324	void mbedtls_x509_crt_restart_init( mbedtls_x509_crt_restart_ctx *ctx )
kenjiArai	0:5b88d5760320	3325	{
kenjiArai	0:5b88d5760320	3326	mbedtls_pk_restart_init( &ctx->pk );
kenjiArai	0:5b88d5760320	3327
kenjiArai	0:5b88d5760320	3328	ctx->parent = NULL;
kenjiArai	0:5b88d5760320	3329	ctx->fallback_parent = NULL;
kenjiArai	0:5b88d5760320	3330	ctx->fallback_signature_is_good = 0;
kenjiArai	0:5b88d5760320	3331
kenjiArai	0:5b88d5760320	3332	ctx->parent_is_trusted = -1;
kenjiArai	0:5b88d5760320	3333
kenjiArai	0:5b88d5760320	3334	ctx->in_progress = x509_crt_rs_none;
kenjiArai	0:5b88d5760320	3335	ctx->self_cnt = 0;
kenjiArai	0:5b88d5760320	3336	x509_crt_verify_chain_reset( &ctx->ver_chain );
kenjiArai	0:5b88d5760320	3337	}
kenjiArai	0:5b88d5760320	3338
kenjiArai	0:5b88d5760320	3339	/*
kenjiArai	0:5b88d5760320	3340	* Free the components of a restart context
kenjiArai	0:5b88d5760320	3341	*/
kenjiArai	0:5b88d5760320	3342	void mbedtls_x509_crt_restart_free( mbedtls_x509_crt_restart_ctx *ctx )
kenjiArai	0:5b88d5760320	3343	{
kenjiArai	0:5b88d5760320	3344	if( ctx == NULL )
kenjiArai	0:5b88d5760320	3345	return;
kenjiArai	0:5b88d5760320	3346
kenjiArai	0:5b88d5760320	3347	mbedtls_pk_restart_free( &ctx->pk );
kenjiArai	0:5b88d5760320	3348	mbedtls_x509_crt_restart_init( ctx );
kenjiArai	0:5b88d5760320	3349	}
kenjiArai	0:5b88d5760320	3350	#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */
kenjiArai	0:5b88d5760320	3351
kenjiArai	0:5b88d5760320	3352	#endif /* MBEDTLS_X509_CRT_PARSE_C */

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Type:	Library
Created:	17 Dec 2019
Imports:	79
Forks:	0
Commits:	2
Dependents:	2
Dependencies:	0
Followers:	1

The code in this repository is Apache licensed.

features/mbedtls/src/x509_crt.c@0:5b88d5760320, 2019-12-17 (annotated)

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