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 ret = 0; 226 if (argc < 1) 227 { 228 if (1 != check(cert_ctx, NULL, untrusted, trusted, crls, e)) 229 ret = -1; 230 } 231 else 232 { 233 for (i=0; i<argc; i++) 234 if (1 != check(cert_ctx,argv[i], untrusted, trusted, crls, e)) 235 ret = -1; 236 } 237 238 end: 239 if (ret == 1) { 240 BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]"); 241 BIO_printf(bio_err," [-attime timestamp]"); 242 #ifndef OPENSSL_NO_ENGINE 243 BIO_printf(bio_err," [-engine e]"); 244 #endif 245 BIO_printf(bio_err," cert1 cert2 ...\n"); 246 247 BIO_printf(bio_err,"recognized usages:\n"); 248 for(i = 0; i < X509_PURPOSE_get_count(); i++) 249 { 250 X509_PURPOSE *ptmp; 251 ptmp = X509_PURPOSE_get0(i); 252 BIO_printf(bio_err, "\t%-10s\t%s\n", 253 X509_PURPOSE_get0_sname(ptmp), 254 X509_PURPOSE_get0_name(ptmp)); 255 } 256 } 257 if (vpm) X509_VERIFY_PARAM_free(vpm); 258 if (cert_ctx != NULL) X509_STORE_free(cert_ctx); 259 sk_X509_pop_free(untrusted, X509_free); 260 sk_X509_pop_free(trusted, X509_free); 261 sk_X509_CRL_pop_free(crls, X509_CRL_free); 262 apps_shutdown(); 263 OPENSSL_EXIT(ret < 0 ? 2 : ret); 264 } 265 266 static int check(X509_STORE *ctx, char *file, 267 STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, 268 STACK_OF(X509_CRL) *crls, ENGINE *e) 269 { 270 X509 *x=NULL; 271 int i=0,ret=0; 272 X509_STORE_CTX *csc; 273 274 x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file"); 275 if (x == NULL) 276 goto end; 277 fprintf(stdout,"%s: ",(file == NULL)?"stdin":file); 278 279 csc = X509_STORE_CTX_new(); 280 if (csc == NULL) 281 { 282 ERR_print_errors(bio_err); 283 goto end; 284 } 285 X509_STORE_set_flags(ctx, vflags); 286 if(!X509_STORE_CTX_init(csc,ctx,x,uchain)) 287 { 288 ERR_print_errors(bio_err); 289 goto end; 290 } 291 if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain); 292 if (crls) 293 X509_STORE_CTX_set0_crls(csc, crls); 294 i=X509_verify_cert(csc); 295 X509_STORE_CTX_free(csc); 296 297 ret=0; 298 end: 299 if (i > 0) 300 { 301 fprintf(stdout,"OK\n"); 302 ret=1; 303 } 304 else 305 ERR_print_errors(bio_err); 306 if (x != NULL) X509_free(x); 307 308 return(ret); 309 } 310 311 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx) 312 { 313 int cert_error = X509_STORE_CTX_get_error(ctx); 314 X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx); 315 316 if (!ok) 317 { 318 if (current_cert) 319 { 320 X509_NAME_print_ex_fp(stdout, 321 X509_get_subject_name(current_cert), 322 0, XN_FLAG_ONELINE); 323 printf("\n"); 324 } 325 printf("%serror %d at %d depth lookup:%s\n", 326 X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path]" : "", 327 cert_error, 328 X509_STORE_CTX_get_error_depth(ctx), 329 X509_verify_cert_error_string(cert_error)); 330 switch(cert_error) 331 { 332 case X509_V_ERR_NO_EXPLICIT_POLICY: 333 policies_print(NULL, ctx); 334 case X509_V_ERR_CERT_HAS_EXPIRED: 335 336 /* since we are just checking the certificates, it is 337 * ok if they are self signed. But we should still warn 338 * the user. 339 */ 340 341 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: 342 /* Continue after extension errors too */ 343 case X509_V_ERR_INVALID_CA: 344 case X509_V_ERR_INVALID_NON_CA: 345 case X509_V_ERR_PATH_LENGTH_EXCEEDED: 346 case X509_V_ERR_INVALID_PURPOSE: 347 case X509_V_ERR_CRL_HAS_EXPIRED: 348 case X509_V_ERR_CRL_NOT_YET_VALID: 349 case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION: 350 ok = 1; 351 352 } 353 354 return ok; 355 356 } 357 if (cert_error == X509_V_OK && ok == 2) 358 policies_print(NULL, ctx); 359 if (!v_verbose) 360 ERR_clear_error(); 361 return(ok); 362 } 363