apps/verify.c

   1 /* apps/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
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include "apps.h"
  63 #include <openssl/bio.h>
  64 #include <openssl/err.h>
  65 #include <openssl/x509.h>
  66 #include <openssl/pem.h>
  67
  68 #undef PROG
  69 #define PROG    verify_main
  70
  71 #ifndef NOPROTO
  72 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx);
  73 static int check(X509_STORE *ctx,char *file);
  74 #else
  75 static int MS_CALLBACK cb();
  76 static int check();
  77 #endif
  78
  79 static int v_verbose=0;
  80
  81 int MAIN(int argc, char **argv)
  82         {
  83         int i,ret=1;
  84         char *CApath=NULL,*CAfile=NULL;
  85         X509_STORE *cert_ctx=NULL;
  86         X509_LOOKUP *lookup=NULL;
  87
  88         cert_ctx=X509_STORE_new();
  89         if (cert_ctx == NULL) goto end;
  90         X509_STORE_set_verify_cb_func(cert_ctx,cb);
  91
  92         ERR_load_crypto_strings();
  93
  94         apps_startup();
  95
  96         if (bio_err == NULL)
  97                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
  98                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
  99
 100         argc--;
 101         argv++;
 102         for (;;)
 103                 {
 104                 if (argc >= 1)
 105                         {
 106                         if (strcmp(*argv,"-CApath") == 0)
 107                                 {
 108                                 if (argc-- < 1) goto end;
 109                                 CApath= *(++argv);
 110                                 }
 111                         else if (strcmp(*argv,"-CAfile") == 0)
 112                                 {
 113                                 if (argc-- < 1) goto end;
 114                                 CAfile= *(++argv);
 115                                 }
 116                         else if (strcmp(*argv,"-help") == 0)
 117                                 goto end;
 118                         else if (strcmp(*argv,"-verbose") == 0)
 119                                 v_verbose=1;
 120                         else if (argv[0][0] == '-')
 121                                 goto end;
 122                         else
 123                                 break;
 124                         argc--;
 125                         argv++;
 126                         }
 127                 else
 128                         break;
 129                 }
 130
 131         lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file());
 132         if (lookup == NULL) abort();
 133         if (!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM))
 134                 X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
 135
 136         lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir());
 137         if (lookup == NULL) abort();
 138         if (!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM))
 139                 X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
 140
 141
 142         ERR_clear_error();
 143         if (argc < 1) check(cert_ctx,NULL);
 144         else
 145                 for (i=0; i<argc; i++)
 146                         check(cert_ctx,argv[i]);
 147         ret=0;
 148 end:
 149         if (ret == 1)
 150                 BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] cert1 cert2 ...\n");
 151         if (cert_ctx != NULL) X509_STORE_free(cert_ctx);
 152         EXIT(ret);
 153         }
 154
 155 static int check(X509_STORE *ctx, char *file)
 156         {
 157         X509 *x=NULL;
 158         BIO *in=NULL;
 159         int i=0,ret=0;
 160         X509_STORE_CTX csc;
 161
 162         in=BIO_new(BIO_s_file());
 163         if (in == NULL)
 164                 {
 165                 ERR_print_errors(bio_err);
 166                 goto end;
 167                 }
 168
 169         if (file == NULL)
 170                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 171         else
 172                 {
 173                 if (BIO_read_filename(in,file) <= 0)
 174                         {
 175                         perror(file);
 176                         goto end;
 177                         }
 178                 }
 179
 180         x=PEM_read_bio_X509(in,NULL,NULL);
 181         if (x == NULL)
 182                 {
 183                 fprintf(stdout,"%s: unable to load certificate file\n",
 184                         (file == NULL)?"stdin":file);
 185                 ERR_print_errors(bio_err);
 186                 goto end;
 187                 }
 188         fprintf(stdout,"%s: ",(file == NULL)?"stdin":file);
 189
 190         X509_STORE_CTX_init(&csc,ctx,x,NULL);
 191         i=X509_verify_cert(&csc);
 192         X509_STORE_CTX_cleanup(&csc);
 193
 194         ret=0;
 195 end:
 196         if (i)
 197                 {
 198                 fprintf(stdout,"OK\n");
 199                 ret=1;
 200                 }
 201         else
 202                 ERR_print_errors(bio_err);
 203         if (x != NULL) X509_free(x);
 204         if (in != NULL) BIO_free(in);
 205
 206         return(ret);
 207         }
 208
 209 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx)
 210         {
 211         char buf[256];
 212
 213         if (!ok)
 214                 {
 215                 /* since we are just checking the certificates, it is
 216                  * ok if they are self signed. */
 217                 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
 218                         ok=1;
 219                 else
 220                         {
 221                         X509_NAME_oneline(
 222                                 X509_get_subject_name(ctx->current_cert),buf,256);
 223                         printf("%s\n",buf);
 224                         printf("error %d at %d depth lookup:%s\n",ctx->error,
 225                                 ctx->error_depth,
 226                                 X509_verify_cert_error_string(ctx->error));
 227                         if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED)
 228                                 ok=1;
 229                         }
 230                 }
 231         if (!v_verbose)
 232                 ERR_clear_error();
 233         return(ok);
 234         }
 235