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| 1 /* crypto/pkcs7/verify.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 #include <stdio.h> | |
| 59 #include <string.h> | |
| 60 #include <openssl/bio.h> | |
| 61 #include <openssl/asn1.h> | |
| 62 #include <openssl/x509.h> | |
| 63 #include <openssl/pem.h> | |
| 64 #include <openssl/err.h> | |
| 65 #include "example.h" | |
| 66 | |
| 67 int verify_callback(int ok, X509_STORE_CTX *ctx); | |
| 68 | |
| 69 BIO *bio_err=NULL; | |
| 70 BIO *bio_out=NULL; | |
| 71 | |
| 72 int main(argc,argv) | |
| 73 int argc; | |
| 74 char *argv[]; | |
| 75 { | |
| 76 PKCS7 *p7; | |
| 77 PKCS7_SIGNER_INFO *si; | |
| 78 X509_STORE_CTX cert_ctx; | |
| 79 X509_STORE *cert_store=NULL; | |
| 80 BIO *data,*detached=NULL,*p7bio=NULL; | |
| 81 char buf[1024*4]; | |
| 82 char *pp; | |
| 83 int i,printit=0; | |
| 84 STACK_OF(PKCS7_SIGNER_INFO) *sk; | |
| 85 | |
| 86 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE); | |
| 87 bio_out=BIO_new_fp(stdout,BIO_NOCLOSE); | |
| 88 #ifndef OPENSSL_NO_MD2 | |
| 89 EVP_add_digest(EVP_md2()); | |
| 90 #endif | |
| 91 #ifndef OPENSSL_NO_MD5 | |
| 92 EVP_add_digest(EVP_md5()); | |
| 93 #endif | |
| 94 #ifndef OPENSSL_NO_SHA1 | |
| 95 EVP_add_digest(EVP_sha1()); | |
| 96 #endif | |
| 97 #ifndef OPENSSL_NO_MDC2 | |
| 98 EVP_add_digest(EVP_mdc2()); | |
| 99 #endif | |
| 100 | |
| 101 data=BIO_new(BIO_s_file()); | |
| 102 | |
| 103 pp=NULL; | |
| 104 while (argc > 1) | |
| 105 { | |
| 106 argc--; | |
| 107 argv++; | |
| 108 if (strcmp(argv[0],"-p") == 0) | |
| 109 { | |
| 110 printit=1; | |
| 111 } | |
| 112 else if ((strcmp(argv[0],"-d") == 0) && (argc >= 2)) | |
| 113 { | |
| 114 detached=BIO_new(BIO_s_file()); | |
| 115 if (!BIO_read_filename(detached,argv[1])) | |
| 116 goto err; | |
| 117 argc--; | |
| 118 argv++; | |
| 119 } | |
| 120 else | |
| 121 { | |
| 122 pp=argv[0]; | |
| 123 if (!BIO_read_filename(data,argv[0])) | |
| 124 goto err; | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 if (pp == NULL) | |
| 129 BIO_set_fp(data,stdin,BIO_NOCLOSE); | |
| 130 | |
| 131 | |
| 132 /* Load the PKCS7 object from a file */ | |
| 133 if ((p7=PEM_read_bio_PKCS7(data,NULL,NULL,NULL)) == NULL) goto err; | |
| 134 | |
| 135 /* This stuff is being setup for certificate verification. | |
| 136 * When using SSL, it could be replaced with a | |
| 137 * cert_stre=SSL_CTX_get_cert_store(ssl_ctx); */ | |
| 138 cert_store=X509_STORE_new(); | |
| 139 X509_STORE_set_default_paths(cert_store); | |
| 140 X509_STORE_load_locations(cert_store,NULL,"../../certs"); | |
| 141 X509_STORE_set_verify_cb_func(cert_store,verify_callback); | |
| 142 | |
| 143 ERR_clear_error(); | |
| 144 | |
| 145 /* We need to process the data */ | |
| 146 if ((PKCS7_get_detached(p7) || detached)) | |
| 147 { | |
| 148 if (detached == NULL) | |
| 149 { | |
| 150 printf("no data to verify the signature on\n"); | |
| 151 exit(1); | |
| 152 } | |
| 153 else | |
| 154 p7bio=PKCS7_dataInit(p7,detached); | |
| 155 } | |
| 156 else | |
| 157 { | |
| 158 p7bio=PKCS7_dataInit(p7,NULL); | |
| 159 } | |
| 160 | |
| 161 /* We now have to 'read' from p7bio to calculate digests etc. */ | |
| 162 for (;;) | |
| 163 { | |
| 164 i=BIO_read(p7bio,buf,sizeof(buf)); | |
| 165 /* print it? */ | |
| 166 if (i <= 0) break; | |
| 167 } | |
| 168 | |
| 169 /* We can now verify signatures */ | |
| 170 sk=PKCS7_get_signer_info(p7); | |
| 171 if (sk == NULL) | |
| 172 { | |
| 173 printf("there are no signatures on this data\n"); | |
| 174 exit(1); | |
| 175 } | |
| 176 | |
| 177 /* Ok, first we need to, for each subject entry, see if we can verify */ | |
| 178 for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sk); i++) | |
| 179 { | |
| 180 ASN1_UTCTIME *tm; | |
| 181 char *str1,*str2; | |
| 182 int rc; | |
| 183 | |
| 184 si=sk_PKCS7_SIGNER_INFO_value(sk,i); | |
| 185 rc=PKCS7_dataVerify(cert_store,&cert_ctx,p7bio,p7,si); | |
| 186 if (rc <= 0) | |
| 187 goto err; | |
| 188 printf("signer info\n"); | |
| 189 if ((tm=get_signed_time(si)) != NULL) | |
| 190 { | |
| 191 BIO_printf(bio_out,"Signed time:"); | |
| 192 ASN1_UTCTIME_print(bio_out,tm); | |
| 193 ASN1_UTCTIME_free(tm); | |
| 194 BIO_printf(bio_out,"\n"); | |
| 195 } | |
| 196 if (get_signed_seq2string(si,&str1,&str2)) | |
| 197 { | |
| 198 BIO_printf(bio_out,"String 1 is %s\n",str1); | |
| 199 BIO_printf(bio_out,"String 2 is %s\n",str2); | |
| 200 } | |
| 201 | |
| 202 } | |
| 203 | |
| 204 X509_STORE_free(cert_store); | |
| 205 | |
| 206 printf("done\n"); | |
| 207 exit(0); | |
| 208 err: | |
| 209 ERR_load_crypto_strings(); | |
| 210 ERR_print_errors_fp(stderr); | |
| 211 exit(1); | |
| 212 } | |
| 213 | |
| 214 /* should be X509 * but we can just have them as char *. */ | |
| 215 int verify_callback(int ok, X509_STORE_CTX *ctx) | |
| 216 { | |
| 217 char buf[256]; | |
| 218 X509 *err_cert; | |
| 219 int err,depth; | |
| 220 | |
| 221 err_cert=X509_STORE_CTX_get_current_cert(ctx); | |
| 222 err= X509_STORE_CTX_get_error(ctx); | |
| 223 depth= X509_STORE_CTX_get_error_depth(ctx); | |
| 224 | |
| 225 X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256); | |
| 226 BIO_printf(bio_err,"depth=%d %s\n",depth,buf); | |
| 227 if (!ok) | |
| 228 { | |
| 229 BIO_printf(bio_err,"verify error:num=%d:%s\n",err, | |
| 230 X509_verify_cert_error_string(err)); | |
| 231 if (depth < 6) | |
| 232 { | |
| 233 ok=1; | |
| 234 X509_STORE_CTX_set_error(ctx,X509_V_OK); | |
| 235 } | |
| 236 else | |
| 237 { | |
| 238 ok=0; | |
| 239 X509_STORE_CTX_set_error(ctx,X509_V_ERR_CERT_CHAIN_TOO_L
ONG); | |
| 240 } | |
| 241 } | |
| 242 switch (ctx->error) | |
| 243 { | |
| 244 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: | |
| 245 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,25
6); | |
| 246 BIO_printf(bio_err,"issuer= %s\n",buf); | |
| 247 break; | |
| 248 case X509_V_ERR_CERT_NOT_YET_VALID: | |
| 249 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: | |
| 250 BIO_printf(bio_err,"notBefore="); | |
| 251 ASN1_UTCTIME_print(bio_err,X509_get_notBefore(ctx->current_cert)
); | |
| 252 BIO_printf(bio_err,"\n"); | |
| 253 break; | |
| 254 case X509_V_ERR_CERT_HAS_EXPIRED: | |
| 255 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: | |
| 256 BIO_printf(bio_err,"notAfter="); | |
| 257 ASN1_UTCTIME_print(bio_err,X509_get_notAfter(ctx->current_cert))
; | |
| 258 BIO_printf(bio_err,"\n"); | |
| 259 break; | |
| 260 } | |
| 261 BIO_printf(bio_err,"verify return:%d\n",ok); | |
| 262 return(ok); | |
| 263 } | |
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