Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | #ifndef OPENSSL_NO_ENGINE |
| 92 | char *engine=NULL; |
| 93 | #endif |
| 94 | |
| 95 | cert_ctx=X509_STORE_new(); |
| 96 | if (cert_ctx == NULL) goto end; |
| 97 | X509_STORE_set_verify_cb(cert_ctx,cb); |
| 98 | |
| 99 | ERR_load_crypto_strings(); |
| 100 | |
| 101 | apps_startup(); |
| 102 | |
| 103 | if (bio_err == NULL) |
| 104 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
| 105 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
| 106 | |
| 107 | if (!load_config(bio_err, NULL)) |
| 108 | goto end; |
| 109 | |
| 110 | argc--; |
| 111 | argv++; |
| 112 | for (;;) |
| 113 | { |
| 114 | if (argc >= 1) |
| 115 | { |
| 116 | if (strcmp(*argv,"-CApath") == 0) |
| 117 | { |
| 118 | if (argc-- < 1) goto end; |
| 119 | CApath= *(++argv); |
| 120 | } |
| 121 | else if (strcmp(*argv,"-CAfile") == 0) |
| 122 | { |
| 123 | if (argc-- < 1) goto end; |
| 124 | CAfile= *(++argv); |
| 125 | } |
| 126 | else if (args_verify(&argv, &argc, &badarg, bio_err, |
| 127 | &vpm)) |
| 128 | { |
| 129 | if (badarg) |
| 130 | goto end; |
| 131 | continue; |
| 132 | } |
| 133 | else if (strcmp(*argv,"-untrusted") == 0) |
| 134 | { |
| 135 | if (argc-- < 1) goto end; |
| 136 | untfile= *(++argv); |
| 137 | } |
| 138 | else if (strcmp(*argv,"-trusted") == 0) |
| 139 | { |
| 140 | if (argc-- < 1) goto end; |
| 141 | trustfile= *(++argv); |
| 142 | } |
| 143 | else if (strcmp(*argv,"-CRLfile") == 0) |
| 144 | { |
| 145 | if (argc-- < 1) goto end; |
| 146 | crlfile= *(++argv); |
| 147 | } |
| 148 | #ifndef OPENSSL_NO_ENGINE |
| 149 | else if (strcmp(*argv,"-engine") == 0) |
| 150 | { |
| 151 | if (--argc < 1) goto end; |
| 152 | engine= *(++argv); |
| 153 | } |
| 154 | #endif |
| 155 | else if (strcmp(*argv,"-help") == 0) |
| 156 | goto end; |
| 157 | else if (strcmp(*argv,"-verbose") == 0) |
| 158 | v_verbose=1; |
| 159 | else if (argv[0][0] == '-') |
| 160 | goto end; |
| 161 | else |
| 162 | break; |
| 163 | argc--; |
| 164 | argv++; |
| 165 | } |
| 166 | else |
| 167 | break; |
| 168 | } |
| 169 | |
| 170 | #ifndef OPENSSL_NO_ENGINE |
| 171 | e = setup_engine(bio_err, engine, 0); |
| 172 | #endif |
| 173 | |
| 174 | if (vpm) |
| 175 | X509_STORE_set1_param(cert_ctx, vpm); |
| 176 | |
| 177 | lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file()); |
| 178 | if (lookup == NULL) abort(); |
| 179 | if (CAfile) { |
| 180 | i=X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM); |
| 181 | if(!i) { |
| 182 | BIO_printf(bio_err, "Error loading file %s\n", CAfile); |
| 183 | ERR_print_errors(bio_err); |
| 184 | goto end; |
| 185 | } |
| 186 | } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT); |
| 187 | |
| 188 | lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir()); |
| 189 | if (lookup == NULL) abort(); |
| 190 | if (CApath) { |
| 191 | i=X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM); |
| 192 | if(!i) { |
| 193 | BIO_printf(bio_err, "Error loading directory %s\n", CApath); |
| 194 | ERR_print_errors(bio_err); |
| 195 | goto end; |
| 196 | } |
| 197 | } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT); |
| 198 | |
| 199 | ERR_clear_error(); |
| 200 | |
| 201 | if(untfile) |
| 202 | { |
| 203 | untrusted = load_certs(bio_err, untfile, FORMAT_PEM, |
| 204 | NULL, e, "untrusted certificates"); |
| 205 | if(!untrusted) |
| 206 | goto end; |
| 207 | } |
| 208 | |
| 209 | if(trustfile) |
| 210 | { |
| 211 | trusted = load_certs(bio_err, trustfile, FORMAT_PEM, |
| 212 | NULL, e, "trusted certificates"); |
| 213 | if(!trusted) |
| 214 | goto end; |
| 215 | } |
| 216 | |
| 217 | if(crlfile) |
| 218 | { |
| 219 | crls = load_crls(bio_err, crlfile, FORMAT_PEM, |
| 220 | NULL, e, "other CRLs"); |
| 221 | if(!crls) |
| 222 | goto end; |
| 223 | } |
| 224 | |
| 225 | if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, crls, e); |
| 226 | else |
| 227 | for (i=0; i<argc; i++) |
| 228 | check(cert_ctx,argv[i], untrusted, trusted, crls, e); |
| 229 | ret=0; |
| 230 | end: |
| 231 | if (ret == 1) { |
| 232 | BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]"); |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 233 | #ifndef OPENSSL_NO_ENGINE |
| 234 | BIO_printf(bio_err," [-engine e]"); |
| 235 | #endif |
| 236 | BIO_printf(bio_err," cert1 cert2 ...\n"); |
| 237 | BIO_printf(bio_err,"recognized usages:\n"); |
| 238 | for(i = 0; i < X509_PURPOSE_get_count(); i++) { |
| 239 | X509_PURPOSE *ptmp; |
| 240 | ptmp = X509_PURPOSE_get0(i); |
| 241 | BIO_printf(bio_err, "\t%-10s\t%s\n", X509_PURPOSE_get0_sname(ptmp), |
| 242 | X509_PURPOSE_get0_name(ptmp)); |
| 243 | } |
| 244 | } |
| 245 | if (vpm) X509_VERIFY_PARAM_free(vpm); |
| 246 | if (cert_ctx != NULL) X509_STORE_free(cert_ctx); |
| 247 | sk_X509_pop_free(untrusted, X509_free); |
| 248 | sk_X509_pop_free(trusted, X509_free); |
| 249 | sk_X509_CRL_pop_free(crls, X509_CRL_free); |
| 250 | apps_shutdown(); |
| 251 | OPENSSL_EXIT(ret); |
| 252 | } |
| 253 | |
| 254 | static int check(X509_STORE *ctx, char *file, |
| 255 | STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, |
| 256 | STACK_OF(X509_CRL) *crls, ENGINE *e) |
| 257 | { |
| 258 | X509 *x=NULL; |
| 259 | int i=0,ret=0; |
| 260 | X509_STORE_CTX *csc; |
| 261 | |
| 262 | x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file"); |
| 263 | if (x == NULL) |
| 264 | goto end; |
| 265 | fprintf(stdout,"%s: ",(file == NULL)?"stdin":file); |
| 266 | |
| 267 | csc = X509_STORE_CTX_new(); |
| 268 | if (csc == NULL) |
| 269 | { |
| 270 | ERR_print_errors(bio_err); |
| 271 | goto end; |
| 272 | } |
| 273 | X509_STORE_set_flags(ctx, vflags); |
| 274 | if(!X509_STORE_CTX_init(csc,ctx,x,uchain)) |
| 275 | { |
| 276 | ERR_print_errors(bio_err); |
| 277 | goto end; |
| 278 | } |
| 279 | if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain); |
| 280 | if (crls) |
| 281 | X509_STORE_CTX_set0_crls(csc, crls); |
| 282 | i=X509_verify_cert(csc); |
| 283 | X509_STORE_CTX_free(csc); |
| 284 | |
| 285 | ret=0; |
| 286 | end: |
| 287 | if (i > 0) |
| 288 | { |
| 289 | fprintf(stdout,"OK\n"); |
| 290 | ret=1; |
| 291 | } |
| 292 | else |
| 293 | ERR_print_errors(bio_err); |
| 294 | if (x != NULL) X509_free(x); |
| 295 | |
| 296 | return(ret); |
| 297 | } |
| 298 | |
| 299 | static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx) |
| 300 | { |
| 301 | int cert_error = X509_STORE_CTX_get_error(ctx); |
| 302 | X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx); |
| 303 | |
| 304 | if (!ok) |
| 305 | { |
| 306 | if (current_cert) |
| 307 | { |
| 308 | X509_NAME_print_ex_fp(stdout, |
| 309 | X509_get_subject_name(current_cert), |
| 310 | 0, XN_FLAG_ONELINE); |
| 311 | printf("\n"); |
| 312 | } |
| 313 | printf("%serror %d at %d depth lookup:%s\n", |
| 314 | X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path]" : "", |
| 315 | cert_error, |
| 316 | X509_STORE_CTX_get_error_depth(ctx), |
| 317 | X509_verify_cert_error_string(cert_error)); |
| 318 | switch(cert_error) |
| 319 | { |
| 320 | case X509_V_ERR_NO_EXPLICIT_POLICY: |
| 321 | policies_print(NULL, ctx); |
| 322 | case X509_V_ERR_CERT_HAS_EXPIRED: |
| 323 | |
| 324 | /* since we are just checking the certificates, it is |
| 325 | * ok if they are self signed. But we should still warn |
| 326 | * the user. |
| 327 | */ |
| 328 | |
| 329 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: |
| 330 | /* Continue after extension errors too */ |
| 331 | case X509_V_ERR_INVALID_CA: |
| 332 | case X509_V_ERR_INVALID_NON_CA: |
| 333 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: |
| 334 | case X509_V_ERR_INVALID_PURPOSE: |
| 335 | case X509_V_ERR_CRL_HAS_EXPIRED: |
| 336 | case X509_V_ERR_CRL_NOT_YET_VALID: |
| 337 | case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION: |
| 338 | ok = 1; |
| 339 | |
| 340 | } |
| 341 | |
| 342 | return ok; |
| 343 | |
| 344 | } |
| 345 | if (cert_error == X509_V_OK && ok == 2) |
| 346 | policies_print(NULL, ctx); |
| 347 | if (!v_verbose) |
| 348 | ERR_clear_error(); |
| 349 | return(ok); |
| 350 | } |