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 } 353