release/src/router/openssl/crypto/pkcs7/verify.c

   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_LONG);
 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,256);
 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         }