Hannes Tschofenig / Mbed 2 deprecated aes-gcm-test-program

Example program to test AES-GCM functionality. Used for a workshop

Dependencies:   mbed

SSL/library/x509_csr.c@0:796d0f61a05b, 2018-09-27 (annotated)

Committer:
HannesTschofenig
Date:
Thu Sep 27 06:34:22 2018 +0000
Revision:
0:796d0f61a05b
Example AES-GCM test program

Who changed what in which revision?

UserRevisionLine numberNew contents of line
HannesTschofenig 0:796d0f61a05b 1 /*
HannesTschofenig 0:796d0f61a05b 2 * X.509 Certificate Signing Request (CSR) parsing
HannesTschofenig 0:796d0f61a05b 3 *
HannesTschofenig 0:796d0f61a05b 4 * Copyright (C) 2006-2014, Brainspark B.V.
HannesTschofenig 0:796d0f61a05b 5 *
HannesTschofenig 0:796d0f61a05b 6 * This file is part of PolarSSL (http://www.polarssl.org)
HannesTschofenig 0:796d0f61a05b 7 * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
HannesTschofenig 0:796d0f61a05b 8 *
HannesTschofenig 0:796d0f61a05b 9 * All rights reserved.
HannesTschofenig 0:796d0f61a05b 10 *
HannesTschofenig 0:796d0f61a05b 11 * This program is free software; you can redistribute it and/or modify
HannesTschofenig 0:796d0f61a05b 12 * it under the terms of the GNU General Public License as published by
HannesTschofenig 0:796d0f61a05b 13 * the Free Software Foundation; either version 2 of the License, or
HannesTschofenig 0:796d0f61a05b 14 * (at your option) any later version.
HannesTschofenig 0:796d0f61a05b 15 *
HannesTschofenig 0:796d0f61a05b 16 * This program is distributed in the hope that it will be useful,
HannesTschofenig 0:796d0f61a05b 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
HannesTschofenig 0:796d0f61a05b 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
HannesTschofenig 0:796d0f61a05b 19 * GNU General Public License for more details.
HannesTschofenig 0:796d0f61a05b 20 *
HannesTschofenig 0:796d0f61a05b 21 * You should have received a copy of the GNU General Public License along
HannesTschofenig 0:796d0f61a05b 22 * with this program; if not, write to the Free Software Foundation, Inc.,
HannesTschofenig 0:796d0f61a05b 23 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
HannesTschofenig 0:796d0f61a05b 24 */
HannesTschofenig 0:796d0f61a05b 25 /*
HannesTschofenig 0:796d0f61a05b 26 * The ITU-T X.509 standard defines a certificate format for PKI.
HannesTschofenig 0:796d0f61a05b 27 *
HannesTschofenig 0:796d0f61a05b 28 * http://www.ietf.org/rfc/rfc3279.txt
HannesTschofenig 0:796d0f61a05b 29 * http://www.ietf.org/rfc/rfc3280.txt
HannesTschofenig 0:796d0f61a05b 30 *
HannesTschofenig 0:796d0f61a05b 31 * ftp://ftp.rsasecurity.com/pub/pkcs/ascii/pkcs-1v2.asc
HannesTschofenig 0:796d0f61a05b 32 *
HannesTschofenig 0:796d0f61a05b 33 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
HannesTschofenig 0:796d0f61a05b 34 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
HannesTschofenig 0:796d0f61a05b 35 */
HannesTschofenig 0:796d0f61a05b 36
HannesTschofenig 0:796d0f61a05b 37 #if !defined(POLARSSL_CONFIG_FILE)
HannesTschofenig 0:796d0f61a05b 38 #include "polarssl/config.h"
HannesTschofenig 0:796d0f61a05b 39 #else
HannesTschofenig 0:796d0f61a05b 40 #include POLARSSL_CONFIG_FILE
HannesTschofenig 0:796d0f61a05b 41 #endif
HannesTschofenig 0:796d0f61a05b 42
HannesTschofenig 0:796d0f61a05b 43 #if defined(POLARSSL_X509_CSR_PARSE_C)
HannesTschofenig 0:796d0f61a05b 44
HannesTschofenig 0:796d0f61a05b 45 #include "polarssl/x509_csr.h"
HannesTschofenig 0:796d0f61a05b 46 #include "polarssl/oid.h"
HannesTschofenig 0:796d0f61a05b 47 #if defined(POLARSSL_PEM_PARSE_C)
HannesTschofenig 0:796d0f61a05b 48 #include "polarssl/pem.h"
HannesTschofenig 0:796d0f61a05b 49 #endif
HannesTschofenig 0:796d0f61a05b 50
HannesTschofenig 0:796d0f61a05b 51 #if defined(POLARSSL_PLATFORM_C)
HannesTschofenig 0:796d0f61a05b 52 #include "polarssl/platform.h"
HannesTschofenig 0:796d0f61a05b 53 #else
HannesTschofenig 0:796d0f61a05b 54 #define polarssl_malloc malloc
HannesTschofenig 0:796d0f61a05b 55 #define polarssl_free free
HannesTschofenig 0:796d0f61a05b 56 #endif
HannesTschofenig 0:796d0f61a05b 57
HannesTschofenig 0:796d0f61a05b 58 #include <string.h>
HannesTschofenig 0:796d0f61a05b 59 #include <stdlib.h>
HannesTschofenig 0:796d0f61a05b 60
HannesTschofenig 0:796d0f61a05b 61 #if defined(POLARSSL_FS_IO) || defined(EFIX64) || defined(EFI32)
HannesTschofenig 0:796d0f61a05b 62 #include <stdio.h>
HannesTschofenig 0:796d0f61a05b 63 #endif
HannesTschofenig 0:796d0f61a05b 64
HannesTschofenig 0:796d0f61a05b 65 /*
HannesTschofenig 0:796d0f61a05b 66 * Version ::= INTEGER { v1(0) }
HannesTschofenig 0:796d0f61a05b 67 */
HannesTschofenig 0:796d0f61a05b 68 static int x509_csr_get_version( unsigned char **p,
HannesTschofenig 0:796d0f61a05b 69 const unsigned char *end,
HannesTschofenig 0:796d0f61a05b 70 int *ver )
HannesTschofenig 0:796d0f61a05b 71 {
HannesTschofenig 0:796d0f61a05b 72 int ret;
HannesTschofenig 0:796d0f61a05b 73
HannesTschofenig 0:796d0f61a05b 74 if( ( ret = asn1_get_int( p, end, ver ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 75 {
HannesTschofenig 0:796d0f61a05b 76 if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG )
HannesTschofenig 0:796d0f61a05b 77 {
HannesTschofenig 0:796d0f61a05b 78 *ver = 0;
HannesTschofenig 0:796d0f61a05b 79 return( 0 );
HannesTschofenig 0:796d0f61a05b 80 }
HannesTschofenig 0:796d0f61a05b 81
HannesTschofenig 0:796d0f61a05b 82 return( POLARSSL_ERR_X509_INVALID_VERSION + ret );
HannesTschofenig 0:796d0f61a05b 83 }
HannesTschofenig 0:796d0f61a05b 84
HannesTschofenig 0:796d0f61a05b 85 return( 0 );
HannesTschofenig 0:796d0f61a05b 86 }
HannesTschofenig 0:796d0f61a05b 87
HannesTschofenig 0:796d0f61a05b 88 /*
HannesTschofenig 0:796d0f61a05b 89 * Parse a CSR
HannesTschofenig 0:796d0f61a05b 90 */
HannesTschofenig 0:796d0f61a05b 91 int x509_csr_parse( x509_csr *csr, const unsigned char *buf, size_t buflen )
HannesTschofenig 0:796d0f61a05b 92 {
HannesTschofenig 0:796d0f61a05b 93 int ret;
HannesTschofenig 0:796d0f61a05b 94 size_t len;
HannesTschofenig 0:796d0f61a05b 95 unsigned char *p, *end;
HannesTschofenig 0:796d0f61a05b 96 #if defined(POLARSSL_PEM_PARSE_C)
HannesTschofenig 0:796d0f61a05b 97 size_t use_len;
HannesTschofenig 0:796d0f61a05b 98 pem_context pem;
HannesTschofenig 0:796d0f61a05b 99 #endif
HannesTschofenig 0:796d0f61a05b 100
HannesTschofenig 0:796d0f61a05b 101 /*
HannesTschofenig 0:796d0f61a05b 102 * Check for valid input
HannesTschofenig 0:796d0f61a05b 103 */
HannesTschofenig 0:796d0f61a05b 104 if( csr == NULL || buf == NULL )
HannesTschofenig 0:796d0f61a05b 105 return( POLARSSL_ERR_X509_BAD_INPUT_DATA );
HannesTschofenig 0:796d0f61a05b 106
HannesTschofenig 0:796d0f61a05b 107 x509_csr_init( csr );
HannesTschofenig 0:796d0f61a05b 108
HannesTschofenig 0:796d0f61a05b 109 #if defined(POLARSSL_PEM_PARSE_C)
HannesTschofenig 0:796d0f61a05b 110 pem_init( &pem );
HannesTschofenig 0:796d0f61a05b 111 ret = pem_read_buffer( &pem,
HannesTschofenig 0:796d0f61a05b 112 "-----BEGIN CERTIFICATE REQUEST-----",
HannesTschofenig 0:796d0f61a05b 113 "-----END CERTIFICATE REQUEST-----",
HannesTschofenig 0:796d0f61a05b 114 buf, NULL, 0, &use_len );
HannesTschofenig 0:796d0f61a05b 115
HannesTschofenig 0:796d0f61a05b 116 if( ret == 0 )
HannesTschofenig 0:796d0f61a05b 117 {
HannesTschofenig 0:796d0f61a05b 118 /*
HannesTschofenig 0:796d0f61a05b 119 * Was PEM encoded, steal PEM buffer
HannesTschofenig 0:796d0f61a05b 120 */
HannesTschofenig 0:796d0f61a05b 121 p = pem.buf;
HannesTschofenig 0:796d0f61a05b 122 pem.buf = NULL;
HannesTschofenig 0:796d0f61a05b 123 len = pem.buflen;
HannesTschofenig 0:796d0f61a05b 124 pem_free( &pem );
HannesTschofenig 0:796d0f61a05b 125 }
HannesTschofenig 0:796d0f61a05b 126 else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
HannesTschofenig 0:796d0f61a05b 127 {
HannesTschofenig 0:796d0f61a05b 128 pem_free( &pem );
HannesTschofenig 0:796d0f61a05b 129 return( ret );
HannesTschofenig 0:796d0f61a05b 130 }
HannesTschofenig 0:796d0f61a05b 131 else
HannesTschofenig 0:796d0f61a05b 132 #endif /* POLARSSL_PEM_PARSE_C */
HannesTschofenig 0:796d0f61a05b 133 {
HannesTschofenig 0:796d0f61a05b 134 /*
HannesTschofenig 0:796d0f61a05b 135 * nope, copy the raw DER data
HannesTschofenig 0:796d0f61a05b 136 */
HannesTschofenig 0:796d0f61a05b 137 p = (unsigned char *) polarssl_malloc( len = buflen );
HannesTschofenig 0:796d0f61a05b 138
HannesTschofenig 0:796d0f61a05b 139 if( p == NULL )
HannesTschofenig 0:796d0f61a05b 140 return( POLARSSL_ERR_X509_MALLOC_FAILED );
HannesTschofenig 0:796d0f61a05b 141
HannesTschofenig 0:796d0f61a05b 142 memcpy( p, buf, buflen );
HannesTschofenig 0:796d0f61a05b 143 }
HannesTschofenig 0:796d0f61a05b 144
HannesTschofenig 0:796d0f61a05b 145 csr->raw.p = p;
HannesTschofenig 0:796d0f61a05b 146 csr->raw.len = len;
HannesTschofenig 0:796d0f61a05b 147 end = p + len;
HannesTschofenig 0:796d0f61a05b 148
HannesTschofenig 0:796d0f61a05b 149 /*
HannesTschofenig 0:796d0f61a05b 150 * CertificationRequest ::= SEQUENCE {
HannesTschofenig 0:796d0f61a05b 151 * certificationRequestInfo CertificationRequestInfo,
HannesTschofenig 0:796d0f61a05b 152 * signatureAlgorithm AlgorithmIdentifier,
HannesTschofenig 0:796d0f61a05b 153 * signature BIT STRING
HannesTschofenig 0:796d0f61a05b 154 * }
HannesTschofenig 0:796d0f61a05b 155 */
HannesTschofenig 0:796d0f61a05b 156 if( ( ret = asn1_get_tag( &p, end, &len,
HannesTschofenig 0:796d0f61a05b 157 ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 158 {
HannesTschofenig 0:796d0f61a05b 159 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 160 return( POLARSSL_ERR_X509_INVALID_FORMAT );
HannesTschofenig 0:796d0f61a05b 161 }
HannesTschofenig 0:796d0f61a05b 162
HannesTschofenig 0:796d0f61a05b 163 if( len != (size_t) ( end - p ) )
HannesTschofenig 0:796d0f61a05b 164 {
HannesTschofenig 0:796d0f61a05b 165 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 166 return( POLARSSL_ERR_X509_INVALID_FORMAT +
HannesTschofenig 0:796d0f61a05b 167 POLARSSL_ERR_ASN1_LENGTH_MISMATCH );
HannesTschofenig 0:796d0f61a05b 168 }
HannesTschofenig 0:796d0f61a05b 169
HannesTschofenig 0:796d0f61a05b 170 /*
HannesTschofenig 0:796d0f61a05b 171 * CertificationRequestInfo ::= SEQUENCE {
HannesTschofenig 0:796d0f61a05b 172 */
HannesTschofenig 0:796d0f61a05b 173 csr->cri.p = p;
HannesTschofenig 0:796d0f61a05b 174
HannesTschofenig 0:796d0f61a05b 175 if( ( ret = asn1_get_tag( &p, end, &len,
HannesTschofenig 0:796d0f61a05b 176 ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 177 {
HannesTschofenig 0:796d0f61a05b 178 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 179 return( POLARSSL_ERR_X509_INVALID_FORMAT + ret );
HannesTschofenig 0:796d0f61a05b 180 }
HannesTschofenig 0:796d0f61a05b 181
HannesTschofenig 0:796d0f61a05b 182 end = p + len;
HannesTschofenig 0:796d0f61a05b 183 csr->cri.len = end - csr->cri.p;
HannesTschofenig 0:796d0f61a05b 184
HannesTschofenig 0:796d0f61a05b 185 /*
HannesTschofenig 0:796d0f61a05b 186 * Version ::= INTEGER { v1(0) }
HannesTschofenig 0:796d0f61a05b 187 */
HannesTschofenig 0:796d0f61a05b 188 if( ( ret = x509_csr_get_version( &p, end, &csr->version ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 189 {
HannesTschofenig 0:796d0f61a05b 190 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 191 return( ret );
HannesTschofenig 0:796d0f61a05b 192 }
HannesTschofenig 0:796d0f61a05b 193
HannesTschofenig 0:796d0f61a05b 194 csr->version++;
HannesTschofenig 0:796d0f61a05b 195
HannesTschofenig 0:796d0f61a05b 196 if( csr->version != 1 )
HannesTschofenig 0:796d0f61a05b 197 {
HannesTschofenig 0:796d0f61a05b 198 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 199 return( POLARSSL_ERR_X509_UNKNOWN_VERSION );
HannesTschofenig 0:796d0f61a05b 200 }
HannesTschofenig 0:796d0f61a05b 201
HannesTschofenig 0:796d0f61a05b 202 /*
HannesTschofenig 0:796d0f61a05b 203 * subject Name
HannesTschofenig 0:796d0f61a05b 204 */
HannesTschofenig 0:796d0f61a05b 205 csr->subject_raw.p = p;
HannesTschofenig 0:796d0f61a05b 206
HannesTschofenig 0:796d0f61a05b 207 if( ( ret = asn1_get_tag( &p, end, &len,
HannesTschofenig 0:796d0f61a05b 208 ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 209 {
HannesTschofenig 0:796d0f61a05b 210 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 211 return( POLARSSL_ERR_X509_INVALID_FORMAT + ret );
HannesTschofenig 0:796d0f61a05b 212 }
HannesTschofenig 0:796d0f61a05b 213
HannesTschofenig 0:796d0f61a05b 214 if( ( ret = x509_get_name( &p, p + len, &csr->subject ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 215 {
HannesTschofenig 0:796d0f61a05b 216 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 217 return( ret );
HannesTschofenig 0:796d0f61a05b 218 }
HannesTschofenig 0:796d0f61a05b 219
HannesTschofenig 0:796d0f61a05b 220 csr->subject_raw.len = p - csr->subject_raw.p;
HannesTschofenig 0:796d0f61a05b 221
HannesTschofenig 0:796d0f61a05b 222 /*
HannesTschofenig 0:796d0f61a05b 223 * subjectPKInfo SubjectPublicKeyInfo
HannesTschofenig 0:796d0f61a05b 224 */
HannesTschofenig 0:796d0f61a05b 225 if( ( ret = pk_parse_subpubkey( &p, end, &csr->pk ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 226 {
HannesTschofenig 0:796d0f61a05b 227 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 228 return( ret );
HannesTschofenig 0:796d0f61a05b 229 }
HannesTschofenig 0:796d0f61a05b 230
HannesTschofenig 0:796d0f61a05b 231 /*
HannesTschofenig 0:796d0f61a05b 232 * attributes [0] Attributes
HannesTschofenig 0:796d0f61a05b 233 */
HannesTschofenig 0:796d0f61a05b 234 if( ( ret = asn1_get_tag( &p, end, &len,
HannesTschofenig 0:796d0f61a05b 235 ASN1_CONSTRUCTED | ASN1_CONTEXT_SPECIFIC ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 236 {
HannesTschofenig 0:796d0f61a05b 237 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 238 return( POLARSSL_ERR_X509_INVALID_FORMAT + ret );
HannesTschofenig 0:796d0f61a05b 239 }
HannesTschofenig 0:796d0f61a05b 240 // TODO Parse Attributes / extension requests
HannesTschofenig 0:796d0f61a05b 241
HannesTschofenig 0:796d0f61a05b 242 p += len;
HannesTschofenig 0:796d0f61a05b 243
HannesTschofenig 0:796d0f61a05b 244 end = csr->raw.p + csr->raw.len;
HannesTschofenig 0:796d0f61a05b 245
HannesTschofenig 0:796d0f61a05b 246 /*
HannesTschofenig 0:796d0f61a05b 247 * signatureAlgorithm AlgorithmIdentifier,
HannesTschofenig 0:796d0f61a05b 248 * signature BIT STRING
HannesTschofenig 0:796d0f61a05b 249 */
HannesTschofenig 0:796d0f61a05b 250 if( ( ret = x509_get_alg_null( &p, end, &csr->sig_oid ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 251 {
HannesTschofenig 0:796d0f61a05b 252 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 253 return( ret );
HannesTschofenig 0:796d0f61a05b 254 }
HannesTschofenig 0:796d0f61a05b 255
HannesTschofenig 0:796d0f61a05b 256 if( ( ret = x509_get_sig_alg( &csr->sig_oid, &csr->sig_md,
HannesTschofenig 0:796d0f61a05b 257 &csr->sig_pk ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 258 {
HannesTschofenig 0:796d0f61a05b 259 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 260 return( POLARSSL_ERR_X509_UNKNOWN_SIG_ALG );
HannesTschofenig 0:796d0f61a05b 261 }
HannesTschofenig 0:796d0f61a05b 262
HannesTschofenig 0:796d0f61a05b 263 if( ( ret = x509_get_sig( &p, end, &csr->sig ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 264 {
HannesTschofenig 0:796d0f61a05b 265 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 266 return( ret );
HannesTschofenig 0:796d0f61a05b 267 }
HannesTschofenig 0:796d0f61a05b 268
HannesTschofenig 0:796d0f61a05b 269 if( p != end )
HannesTschofenig 0:796d0f61a05b 270 {
HannesTschofenig 0:796d0f61a05b 271 x509_csr_free( csr );
HannesTschofenig 0:796d0f61a05b 272 return( POLARSSL_ERR_X509_INVALID_FORMAT +
HannesTschofenig 0:796d0f61a05b 273 POLARSSL_ERR_ASN1_LENGTH_MISMATCH );
HannesTschofenig 0:796d0f61a05b 274 }
HannesTschofenig 0:796d0f61a05b 275
HannesTschofenig 0:796d0f61a05b 276 return( 0 );
HannesTschofenig 0:796d0f61a05b 277 }
HannesTschofenig 0:796d0f61a05b 278
HannesTschofenig 0:796d0f61a05b 279 #if defined(POLARSSL_FS_IO)
HannesTschofenig 0:796d0f61a05b 280 /*
HannesTschofenig 0:796d0f61a05b 281 * Load a CSR into the structure
HannesTschofenig 0:796d0f61a05b 282 */
HannesTschofenig 0:796d0f61a05b 283 int x509_csr_parse_file( x509_csr *csr, const char *path )
HannesTschofenig 0:796d0f61a05b 284 {
HannesTschofenig 0:796d0f61a05b 285 int ret;
HannesTschofenig 0:796d0f61a05b 286 size_t n;
HannesTschofenig 0:796d0f61a05b 287 unsigned char *buf;
HannesTschofenig 0:796d0f61a05b 288
HannesTschofenig 0:796d0f61a05b 289 if ( ( ret = x509_load_file( path, &buf, &n ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 290 return( ret );
HannesTschofenig 0:796d0f61a05b 291
HannesTschofenig 0:796d0f61a05b 292 ret = x509_csr_parse( csr, buf, n );
HannesTschofenig 0:796d0f61a05b 293
HannesTschofenig 0:796d0f61a05b 294 memset( buf, 0, n + 1 );
HannesTschofenig 0:796d0f61a05b 295 polarssl_free( buf );
HannesTschofenig 0:796d0f61a05b 296
HannesTschofenig 0:796d0f61a05b 297 return( ret );
HannesTschofenig 0:796d0f61a05b 298 }
HannesTschofenig 0:796d0f61a05b 299 #endif /* POLARSSL_FS_IO */
HannesTschofenig 0:796d0f61a05b 300
HannesTschofenig 0:796d0f61a05b 301 #if defined(_MSC_VER) && !defined snprintf && !defined(EFIX64) && \
HannesTschofenig 0:796d0f61a05b 302 !defined(EFI32)
HannesTschofenig 0:796d0f61a05b 303 #include <stdarg.h>
HannesTschofenig 0:796d0f61a05b 304
HannesTschofenig 0:796d0f61a05b 305 #if !defined vsnprintf
HannesTschofenig 0:796d0f61a05b 306 #define vsnprintf _vsnprintf
HannesTschofenig 0:796d0f61a05b 307 #endif // vsnprintf
HannesTschofenig 0:796d0f61a05b 308
HannesTschofenig 0:796d0f61a05b 309 /*
HannesTschofenig 0:796d0f61a05b 310 * Windows _snprintf and _vsnprintf are not compatible to linux versions.
HannesTschofenig 0:796d0f61a05b 311 * Result value is not size of buffer needed, but -1 if no fit is possible.
HannesTschofenig 0:796d0f61a05b 312 *
HannesTschofenig 0:796d0f61a05b 313 * This fuction tries to 'fix' this by at least suggesting enlarging the
HannesTschofenig 0:796d0f61a05b 314 * size by 20.
HannesTschofenig 0:796d0f61a05b 315 */
HannesTschofenig 0:796d0f61a05b 316 static int compat_snprintf(char *str, size_t size, const char *format, ...)
HannesTschofenig 0:796d0f61a05b 317 {
HannesTschofenig 0:796d0f61a05b 318 va_list ap;
HannesTschofenig 0:796d0f61a05b 319 int res = -1;
HannesTschofenig 0:796d0f61a05b 320
HannesTschofenig 0:796d0f61a05b 321 va_start( ap, format );
HannesTschofenig 0:796d0f61a05b 322
HannesTschofenig 0:796d0f61a05b 323 res = vsnprintf( str, size, format, ap );
HannesTschofenig 0:796d0f61a05b 324
HannesTschofenig 0:796d0f61a05b 325 va_end( ap );
HannesTschofenig 0:796d0f61a05b 326
HannesTschofenig 0:796d0f61a05b 327 // No quick fix possible
HannesTschofenig 0:796d0f61a05b 328 if ( res < 0 )
HannesTschofenig 0:796d0f61a05b 329 return( (int) size + 20 );
HannesTschofenig 0:796d0f61a05b 330
HannesTschofenig 0:796d0f61a05b 331 return res;
HannesTschofenig 0:796d0f61a05b 332 }
HannesTschofenig 0:796d0f61a05b 333
HannesTschofenig 0:796d0f61a05b 334 #define snprintf compat_snprintf
HannesTschofenig 0:796d0f61a05b 335 #endif /* _MSC_VER && !snprintf && !EFIX64 && !EFI32 */
HannesTschofenig 0:796d0f61a05b 336
HannesTschofenig 0:796d0f61a05b 337 #define POLARSSL_ERR_DEBUG_BUF_TOO_SMALL -2
HannesTschofenig 0:796d0f61a05b 338
HannesTschofenig 0:796d0f61a05b 339 #define SAFE_SNPRINTF() \
HannesTschofenig 0:796d0f61a05b 340 { \
HannesTschofenig 0:796d0f61a05b 341 if( ret == -1 ) \
HannesTschofenig 0:796d0f61a05b 342 return( -1 ); \
HannesTschofenig 0:796d0f61a05b 343 \
HannesTschofenig 0:796d0f61a05b 344 if ( (unsigned int) ret > n ) { \
HannesTschofenig 0:796d0f61a05b 345 p[n - 1] = '\0'; \
HannesTschofenig 0:796d0f61a05b 346 return POLARSSL_ERR_DEBUG_BUF_TOO_SMALL;\
HannesTschofenig 0:796d0f61a05b 347 } \
HannesTschofenig 0:796d0f61a05b 348 \
HannesTschofenig 0:796d0f61a05b 349 n -= (unsigned int) ret; \
HannesTschofenig 0:796d0f61a05b 350 p += (unsigned int) ret; \
HannesTschofenig 0:796d0f61a05b 351 }
HannesTschofenig 0:796d0f61a05b 352
HannesTschofenig 0:796d0f61a05b 353 #define BEFORE_COLON 14
HannesTschofenig 0:796d0f61a05b 354 #define BC "14"
HannesTschofenig 0:796d0f61a05b 355 /*
HannesTschofenig 0:796d0f61a05b 356 * Return an informational string about the CSR.
HannesTschofenig 0:796d0f61a05b 357 */
HannesTschofenig 0:796d0f61a05b 358 int x509_csr_info( char *buf, size_t size, const char *prefix,
HannesTschofenig 0:796d0f61a05b 359 const x509_csr *csr )
HannesTschofenig 0:796d0f61a05b 360 {
HannesTschofenig 0:796d0f61a05b 361 int ret;
HannesTschofenig 0:796d0f61a05b 362 size_t n;
HannesTschofenig 0:796d0f61a05b 363 char *p;
HannesTschofenig 0:796d0f61a05b 364 const char *desc;
HannesTschofenig 0:796d0f61a05b 365 char key_size_str[BEFORE_COLON];
HannesTschofenig 0:796d0f61a05b 366
HannesTschofenig 0:796d0f61a05b 367 p = buf;
HannesTschofenig 0:796d0f61a05b 368 n = size;
HannesTschofenig 0:796d0f61a05b 369
HannesTschofenig 0:796d0f61a05b 370 ret = snprintf( p, n, "%sCSR version : %d",
HannesTschofenig 0:796d0f61a05b 371 prefix, csr->version );
HannesTschofenig 0:796d0f61a05b 372 SAFE_SNPRINTF();
HannesTschofenig 0:796d0f61a05b 373
HannesTschofenig 0:796d0f61a05b 374 ret = snprintf( p, n, "\n%ssubject name : ", prefix );
HannesTschofenig 0:796d0f61a05b 375 SAFE_SNPRINTF();
HannesTschofenig 0:796d0f61a05b 376 ret = x509_dn_gets( p, n, &csr->subject );
HannesTschofenig 0:796d0f61a05b 377 SAFE_SNPRINTF();
HannesTschofenig 0:796d0f61a05b 378
HannesTschofenig 0:796d0f61a05b 379 ret = snprintf( p, n, "\n%ssigned using : ", prefix );
HannesTschofenig 0:796d0f61a05b 380 SAFE_SNPRINTF();
HannesTschofenig 0:796d0f61a05b 381
HannesTschofenig 0:796d0f61a05b 382 ret = oid_get_sig_alg_desc( &csr->sig_oid, &desc );
HannesTschofenig 0:796d0f61a05b 383 if( ret != 0 )
HannesTschofenig 0:796d0f61a05b 384 ret = snprintf( p, n, "???" );
HannesTschofenig 0:796d0f61a05b 385 else
HannesTschofenig 0:796d0f61a05b 386 ret = snprintf( p, n, "%s", desc );
HannesTschofenig 0:796d0f61a05b 387 SAFE_SNPRINTF();
HannesTschofenig 0:796d0f61a05b 388
HannesTschofenig 0:796d0f61a05b 389 if( ( ret = x509_key_size_helper( key_size_str, BEFORE_COLON,
HannesTschofenig 0:796d0f61a05b 390 pk_get_name( &csr->pk ) ) ) != 0 )
HannesTschofenig 0:796d0f61a05b 391 {
HannesTschofenig 0:796d0f61a05b 392 return( ret );
HannesTschofenig 0:796d0f61a05b 393 }
HannesTschofenig 0:796d0f61a05b 394
HannesTschofenig 0:796d0f61a05b 395 ret = snprintf( p, n, "\n%s%-" BC "s: %d bits\n", prefix, key_size_str,
HannesTschofenig 0:796d0f61a05b 396 (int) pk_get_size( &csr->pk ) );
HannesTschofenig 0:796d0f61a05b 397 SAFE_SNPRINTF();
HannesTschofenig 0:796d0f61a05b 398
HannesTschofenig 0:796d0f61a05b 399 return( (int) ( size - n ) );
HannesTschofenig 0:796d0f61a05b 400 }
HannesTschofenig 0:796d0f61a05b 401
HannesTschofenig 0:796d0f61a05b 402 /*
HannesTschofenig 0:796d0f61a05b 403 * Initialize a CSR
HannesTschofenig 0:796d0f61a05b 404 */
HannesTschofenig 0:796d0f61a05b 405 void x509_csr_init( x509_csr *csr )
HannesTschofenig 0:796d0f61a05b 406 {
HannesTschofenig 0:796d0f61a05b 407 memset( csr, 0, sizeof(x509_csr) );
HannesTschofenig 0:796d0f61a05b 408 }
HannesTschofenig 0:796d0f61a05b 409
HannesTschofenig 0:796d0f61a05b 410 /*
HannesTschofenig 0:796d0f61a05b 411 * Unallocate all CSR data
HannesTschofenig 0:796d0f61a05b 412 */
HannesTschofenig 0:796d0f61a05b 413 void x509_csr_free( x509_csr *csr )
HannesTschofenig 0:796d0f61a05b 414 {
HannesTschofenig 0:796d0f61a05b 415 x509_name *name_cur;
HannesTschofenig 0:796d0f61a05b 416 x509_name *name_prv;
HannesTschofenig 0:796d0f61a05b 417
HannesTschofenig 0:796d0f61a05b 418 if( csr == NULL )
HannesTschofenig 0:796d0f61a05b 419 return;
HannesTschofenig 0:796d0f61a05b 420
HannesTschofenig 0:796d0f61a05b 421 pk_free( &csr->pk );
HannesTschofenig 0:796d0f61a05b 422
HannesTschofenig 0:796d0f61a05b 423 name_cur = csr->subject.next;
HannesTschofenig 0:796d0f61a05b 424 while( name_cur != NULL )
HannesTschofenig 0:796d0f61a05b 425 {
HannesTschofenig 0:796d0f61a05b 426 name_prv = name_cur;
HannesTschofenig 0:796d0f61a05b 427 name_cur = name_cur->next;
HannesTschofenig 0:796d0f61a05b 428 memset( name_prv, 0, sizeof( x509_name ) );
HannesTschofenig 0:796d0f61a05b 429 polarssl_free( name_prv );
HannesTschofenig 0:796d0f61a05b 430 }
HannesTschofenig 0:796d0f61a05b 431
HannesTschofenig 0:796d0f61a05b 432 if( csr->raw.p != NULL )
HannesTschofenig 0:796d0f61a05b 433 {
HannesTschofenig 0:796d0f61a05b 434 memset( csr->raw.p, 0, csr->raw.len );
HannesTschofenig 0:796d0f61a05b 435 polarssl_free( csr->raw.p );
HannesTschofenig 0:796d0f61a05b 436 }
HannesTschofenig 0:796d0f61a05b 437
HannesTschofenig 0:796d0f61a05b 438 memset( csr, 0, sizeof( x509_csr ) );
HannesTschofenig 0:796d0f61a05b 439 }
HannesTschofenig 0:796d0f61a05b 440
HannesTschofenig 0:796d0f61a05b 441 #endif /* POLARSSL_X509_CSR_PARSE_C */
HannesTschofenig 0:796d0f61a05b 442
HannesTschofenig 0:796d0f61a05b 443