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