release/src/router/openssl/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/x509v3.h>
  67 #include <openssl/pem.h>
  68
  69 #undef PROG
  70 #define PROG    verify_main
  71
  72 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx);
  73 static int check(X509_STORE *ctx, char *file,
  74                  STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
  75                  STACK_OF(X509_CRL) *crls, ENGINE *e);
  76 static int v_verbose = 0, vflags = 0;
  77
  78 int MAIN(int, char **);
  79
  80 int MAIN(int argc, char **argv)
  81 {
  82     ENGINE *e = NULL;
  83     int i, ret = 1, badarg = 0;
  84     char *CApath = NULL, *CAfile = NULL;
  85     char *untfile = NULL, *trustfile = NULL, *crlfile = NULL;
  86     STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
  87     STACK_OF(X509_CRL) *crls = NULL;
  88     X509_STORE *cert_ctx = NULL;
  89     X509_LOOKUP *lookup = NULL;
  90     X509_VERIFY_PARAM *vpm = NULL;
  91     int crl_download = 0;
  92 #ifndef OPENSSL_NO_ENGINE
  93     char *engine = NULL;
  94 #endif
  95
  96     cert_ctx = X509_STORE_new();
  97     if (cert_ctx == NULL)
  98         goto end;
  99     X509_STORE_set_verify_cb(cert_ctx, cb);
 100
 101     ERR_load_crypto_strings();
 102
 103     apps_startup();
 104
 105     if (bio_err == NULL)
 106         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 107             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
 108
 109     if (!load_config(bio_err, NULL))
 110         goto end;
 111
 112     argc--;
 113     argv++;
 114     for (;;) {
 115         if (argc >= 1) {
 116             if (strcmp(*argv, "-CApath") == 0) {
 117                 if (argc-- < 1)
 118                     goto end;
 119                 CApath = *(++argv);
 120             } else if (strcmp(*argv, "-CAfile") == 0) {
 121                 if (argc-- < 1)
 122                     goto end;
 123                 CAfile = *(++argv);
 124             } else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm)) {
 125                 if (badarg)
 126                     goto end;
 127                 continue;
 128             } else if (strcmp(*argv, "-untrusted") == 0) {
 129                 if (argc-- < 1)
 130                     goto end;
 131                 untfile = *(++argv);
 132             } else if (strcmp(*argv, "-trusted") == 0) {
 133                 if (argc-- < 1)
 134                     goto end;
 135                 trustfile = *(++argv);
 136             } else if (strcmp(*argv, "-CRLfile") == 0) {
 137                 if (argc-- < 1)
 138                     goto end;
 139                 crlfile = *(++argv);
 140             } else if (strcmp(*argv, "-crl_download") == 0)
 141                 crl_download = 1;
 142 #ifndef OPENSSL_NO_ENGINE
 143             else if (strcmp(*argv, "-engine") == 0) {
 144                 if (--argc < 1)
 145                     goto end;
 146                 engine = *(++argv);
 147             }
 148 #endif
 149             else if (strcmp(*argv, "-help") == 0)
 150                 goto end;
 151             else if (strcmp(*argv, "-verbose") == 0)
 152                 v_verbose = 1;
 153             else if (argv[0][0] == '-')
 154                 goto end;
 155             else
 156                 break;
 157             argc--;
 158             argv++;
 159         } else
 160             break;
 161     }
 162
 163 #ifndef OPENSSL_NO_ENGINE
 164     e = setup_engine(bio_err, engine, 0);
 165 #endif
 166
 167     if (vpm)
 168         X509_STORE_set1_param(cert_ctx, vpm);
 169
 170     lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
 171     if (lookup == NULL)
 172         abort();
 173     if (CAfile) {
 174         i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM);
 175         if (!i) {
 176             BIO_printf(bio_err, "Error loading file %s\n", CAfile);
 177             ERR_print_errors(bio_err);
 178             goto end;
 179         }
 180     } else
 181         X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
 182
 183     lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir());
 184     if (lookup == NULL)
 185         abort();
 186     if (CApath) {
 187         i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM);
 188         if (!i) {
 189             BIO_printf(bio_err, "Error loading directory %s\n", CApath);
 190             ERR_print_errors(bio_err);
 191             goto end;
 192         }
 193     } else
 194         X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
 195
 196     ERR_clear_error();
 197
 198     if (untfile) {
 199         untrusted = load_certs(bio_err, untfile, FORMAT_PEM,
 200                                NULL, e, "untrusted certificates");
 201         if (!untrusted)
 202             goto end;
 203     }
 204
 205     if (trustfile) {
 206         trusted = load_certs(bio_err, trustfile, FORMAT_PEM,
 207                              NULL, e, "trusted certificates");
 208         if (!trusted)
 209             goto end;
 210     }
 211
 212     if (crlfile) {
 213         crls = load_crls(bio_err, crlfile, FORMAT_PEM, NULL, e, "other CRLs");
 214         if (!crls)
 215             goto end;
 216     }
 217
 218     ret = 0;
 219
 220     if (crl_download)
 221         store_setup_crl_download(cert_ctx);
 222     if (argc < 1) {
 223         if (1 != check(cert_ctx, NULL, untrusted, trusted, crls, e))
 224             ret = -1;
 225     } else {
 226         for (i = 0; i < argc; i++)
 227             if (1 != check(cert_ctx, argv[i], untrusted, trusted, crls, e))
 228                 ret = -1;
 229     }
 230
 231  end:
 232     if (ret == 1) {
 233         BIO_printf(bio_err,
 234                    "usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
 235         BIO_printf(bio_err, " [-no_alt_chains] [-attime timestamp]");
 236 #ifndef OPENSSL_NO_ENGINE
 237         BIO_printf(bio_err, " [-engine e]");
 238 #endif
 239         BIO_printf(bio_err, " cert1 cert2 ...\n");
 240
 241         BIO_printf(bio_err, "recognized usages:\n");
 242         for (i = 0; i < X509_PURPOSE_get_count(); i++) {
 243             X509_PURPOSE *ptmp;
 244             ptmp = X509_PURPOSE_get0(i);
 245             BIO_printf(bio_err, "\t%-10s\t%s\n",
 246                        X509_PURPOSE_get0_sname(ptmp),
 247                        X509_PURPOSE_get0_name(ptmp));
 248         }
 249     }
 250     if (vpm)
 251         X509_VERIFY_PARAM_free(vpm);
 252     if (cert_ctx != NULL)
 253         X509_STORE_free(cert_ctx);
 254     sk_X509_pop_free(untrusted, X509_free);
 255     sk_X509_pop_free(trusted, X509_free);
 256     sk_X509_CRL_pop_free(crls, X509_CRL_free);
 257     apps_shutdown();
 258     OPENSSL_EXIT(ret < 0 ? 2 : ret);
 259 }
 260
 261 static int check(X509_STORE *ctx, char *file,
 262                  STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
 263                  STACK_OF(X509_CRL) *crls, ENGINE *e)
 264 {
 265     X509 *x = NULL;
 266     int i = 0, ret = 0;
 267     X509_STORE_CTX *csc;
 268
 269     x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file");
 270     if (x == NULL)
 271         goto end;
 272     fprintf(stdout, "%s: ", (file == NULL) ? "stdin" : file);
 273
 274     csc = X509_STORE_CTX_new();
 275     if (csc == NULL) {
 276         ERR_print_errors(bio_err);
 277         goto end;
 278     }
 279     X509_STORE_set_flags(ctx, vflags);
 280     if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
 281         ERR_print_errors(bio_err);
 282         goto end;
 283     }
 284     if (tchain)
 285         X509_STORE_CTX_trusted_stack(csc, tchain);
 286     if (crls)
 287         X509_STORE_CTX_set0_crls(csc, crls);
 288     i = X509_verify_cert(csc);
 289     X509_STORE_CTX_free(csc);
 290
 291     ret = 0;
 292  end:
 293     if (i > 0) {
 294         fprintf(stdout, "OK\n");
 295         ret = 1;
 296     } else
 297         ERR_print_errors(bio_err);
 298     if (x != NULL)
 299         X509_free(x);
 300
 301     return (ret);
 302 }
 303
 304 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx)
 305 {
 306     int cert_error = X509_STORE_CTX_get_error(ctx);
 307     X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
 308
 309     if (!ok) {
 310         if (current_cert) {
 311             X509_NAME_print_ex_fp(stdout,
 312                                   X509_get_subject_name(current_cert),
 313                                   0, XN_FLAG_ONELINE);
 314             printf("\n");
 315         }
 316         printf("%serror %d at %d depth lookup:%s\n",
 317                X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path]" : "",
 318                cert_error,
 319                X509_STORE_CTX_get_error_depth(ctx),
 320                X509_verify_cert_error_string(cert_error));
 321         switch (cert_error) {
 322         case X509_V_ERR_NO_EXPLICIT_POLICY:
 323             policies_print(NULL, ctx);
 324         case X509_V_ERR_CERT_HAS_EXPIRED:
 325
 326             /*
 327              * since we are just checking the certificates, it is ok if they
 328              * are self signed. But we should still warn the user.
 329              */
 330
 331         case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
 332             /* Continue after extension errors too */
 333         case X509_V_ERR_INVALID_CA:
 334         case X509_V_ERR_INVALID_NON_CA:
 335         case X509_V_ERR_PATH_LENGTH_EXCEEDED:
 336         case X509_V_ERR_INVALID_PURPOSE:
 337         case X509_V_ERR_CRL_HAS_EXPIRED:
 338         case X509_V_ERR_CRL_NOT_YET_VALID:
 339         case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
 340             ok = 1;
 341
 342         }
 343
 344         return ok;
 345
 346     }
 347     if (cert_error == X509_V_OK && ok == 2)
 348         policies_print(NULL, ctx);
 349     if (!v_verbose)
 350         ERR_clear_error();
 351     return (ok);
 352 }