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, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e); 74 static STACK_OF(X509) *load_untrusted(char *file); 75 static int v_verbose=0, vflags = 0; 76 77 int MAIN(int, char **); 78 79 int MAIN(int argc, char **argv) 80 { 81 ENGINE *e = NULL; 82 int i,ret=1, badarg = 0; 83 int purpose = -1; 84 char *CApath=NULL,*CAfile=NULL; 85 char *untfile = NULL, *trustfile = NULL; 86 STACK_OF(X509) *untrusted = NULL, *trusted = NULL; 87 X509_STORE *cert_ctx=NULL; 88 X509_LOOKUP *lookup=NULL; 89 X509_VERIFY_PARAM *vpm = NULL; 90 #ifndef OPENSSL_NO_ENGINE 91 char *engine=NULL; 92 #endif 93 94 cert_ctx=X509_STORE_new(); 95 if (cert_ctx == NULL) goto end; 96 X509_STORE_set_verify_cb_func(cert_ctx,cb); 97 98 ERR_load_crypto_strings(); 99 100 apps_startup(); 101 102 if (bio_err == NULL) 103 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 104 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 105 106 if (!load_config(bio_err, NULL)) 107 goto end; 108 109 argc--; 110 argv++; 111 for (;;) 112 { 113 if (argc >= 1) 114 { 115 if (strcmp(*argv,"-CApath") == 0) 116 { 117 if (argc-- < 1) goto end; 118 CApath= *(++argv); 119 } 120 else if (strcmp(*argv,"-CAfile") == 0) 121 { 122 if (argc-- < 1) goto end; 123 CAfile= *(++argv); 124 } 125 else if (args_verify(&argv, &argc, &badarg, bio_err, 126 &vpm)) 127 { 128 if (badarg) 129 goto end; 130 continue; 131 } 132 else if (strcmp(*argv,"-untrusted") == 0) 133 { 134 if (argc-- < 1) goto end; 135 untfile= *(++argv); 136 } 137 else if (strcmp(*argv,"-trusted") == 0) 138 { 139 if (argc-- < 1) goto end; 140 trustfile= *(++argv); 141 } 142 #ifndef OPENSSL_NO_ENGINE 143 else if (strcmp(*argv,"-engine") == 0) 144 { 145 if (--argc < 1) 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 } 160 else 161 break; 162 } 163 164 #ifndef OPENSSL_NO_ENGINE 165 e = setup_engine(bio_err, engine, 0); 166 #endif 167 168 if (vpm) 169 X509_STORE_set1_param(cert_ctx, vpm); 170 171 lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file()); 172 if (lookup == NULL) 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 X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT); 181 182 lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir()); 183 if (lookup == NULL) 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 X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT); 192 193 ERR_clear_error(); 194 195 if(untfile) { 196 if(!(untrusted = load_untrusted(untfile))) { 197 BIO_printf(bio_err, "Error loading untrusted file %s\n", untfile); 198 ERR_print_errors(bio_err); 199 goto end; 200 } 201 } 202 203 if(trustfile) { 204 if(!(trusted = load_untrusted(trustfile))) { 205 BIO_printf(bio_err, "Error loading untrusted file %s\n", trustfile); 206 ERR_print_errors(bio_err); 207 goto end; 208 } 209 } 210 211 if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, purpose, e); 212 else 213 for (i=0; i<argc; i++) 214 check(cert_ctx,argv[i], untrusted, trusted, purpose, e); 215 ret=0; 216 end: 217 if (ret == 1) { 218 BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]"); 219 #ifndef OPENSSL_NO_ENGINE 220 BIO_printf(bio_err," [-engine e]"); 221 #endif 222 BIO_printf(bio_err," cert1 cert2 ...\n"); 223 BIO_printf(bio_err,"recognized usages:\n"); 224 for(i = 0; i < X509_PURPOSE_get_count(); i++) { 225 X509_PURPOSE *ptmp; 226 ptmp = X509_PURPOSE_get0(i); 227 BIO_printf(bio_err, "\t%-10s\t%s\n", X509_PURPOSE_get0_sname(ptmp), 228 X509_PURPOSE_get0_name(ptmp)); 229 } 230 } 231 if (vpm) X509_VERIFY_PARAM_free(vpm); 232 if (cert_ctx != NULL) X509_STORE_free(cert_ctx); 233 sk_X509_pop_free(untrusted, X509_free); 234 sk_X509_pop_free(trusted, X509_free); 235 apps_shutdown(); 236 OPENSSL_EXIT(ret); 237 } 238 239 static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e) 240 { 241 X509 *x=NULL; 242 int i=0,ret=0; 243 X509_STORE_CTX *csc; 244 245 x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file"); 246 if (x == NULL) 247 goto end; 248 fprintf(stdout,"%s: ",(file == NULL)?"stdin":file); 249 250 csc = X509_STORE_CTX_new(); 251 if (csc == NULL) 252 { 253 ERR_print_errors(bio_err); 254 goto end; 255 } 256 X509_STORE_set_flags(ctx, vflags); 257 if(!X509_STORE_CTX_init(csc,ctx,x,uchain)) 258 { 259 ERR_print_errors(bio_err); 260 goto end; 261 } 262 if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain); 263 if(purpose >= 0) X509_STORE_CTX_set_purpose(csc, purpose); 264 i=X509_verify_cert(csc); 265 X509_STORE_CTX_free(csc); 266 267 ret=0; 268 end: 269 if (i > 0) 270 { 271 fprintf(stdout,"OK\n"); 272 ret=1; 273 } 274 else 275 ERR_print_errors(bio_err); 276 if (x != NULL) X509_free(x); 277 278 return(ret); 279 } 280 281 static STACK_OF(X509) *load_untrusted(char *certfile) 282 { 283 STACK_OF(X509_INFO) *sk=NULL; 284 STACK_OF(X509) *stack=NULL, *ret=NULL; 285 BIO *in=NULL; 286 X509_INFO *xi; 287 288 if(!(stack = sk_X509_new_null())) { 289 BIO_printf(bio_err,"memory allocation failure\n"); 290 goto end; 291 } 292 293 if(!(in=BIO_new_file(certfile, "r"))) { 294 BIO_printf(bio_err,"error opening the file, %s\n",certfile); 295 goto end; 296 } 297 298 /* This loads from a file, a stack of x509/crl/pkey sets */ 299 if(!(sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL))) { 300 BIO_printf(bio_err,"error reading the file, %s\n",certfile); 301 goto end; 302 } 303 304 /* scan over it and pull out the certs */ 305 while (sk_X509_INFO_num(sk)) 306 { 307 xi=sk_X509_INFO_shift(sk); 308 if (xi->x509 != NULL) 309 { 310 sk_X509_push(stack,xi->x509); 311 xi->x509=NULL; 312 } 313 X509_INFO_free(xi); 314 } 315 if(!sk_X509_num(stack)) { 316 BIO_printf(bio_err,"no certificates in file, %s\n",certfile); 317 sk_X509_free(stack); 318 goto end; 319 } 320 ret=stack; 321 end: 322 BIO_free(in); 323 sk_X509_INFO_free(sk); 324 return(ret); 325 } 326 327 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx) 328 { 329 char buf[256]; 330 331 if (!ok) 332 { 333 if (ctx->current_cert) 334 { 335 X509_NAME_oneline( 336 X509_get_subject_name(ctx->current_cert),buf, 337 sizeof buf); 338 printf("%s\n",buf); 339 } 340 printf("error %d at %d depth lookup:%s\n",ctx->error, 341 ctx->error_depth, 342 X509_verify_cert_error_string(ctx->error)); 343 if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED) ok=1; 344 /* since we are just checking the certificates, it is 345 * ok if they are self signed. But we should still warn 346 * the user. 347 */ 348 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1; 349 /* Continue after extension errors too */ 350 if (ctx->error == X509_V_ERR_INVALID_CA) ok=1; 351 if (ctx->error == X509_V_ERR_INVALID_NON_CA) ok=1; 352 if (ctx->error == X509_V_ERR_PATH_LENGTH_EXCEEDED) ok=1; 353 if (ctx->error == X509_V_ERR_INVALID_PURPOSE) ok=1; 354 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1; 355 if (ctx->error == X509_V_ERR_CRL_HAS_EXPIRED) ok=1; 356 if (ctx->error == X509_V_ERR_CRL_NOT_YET_VALID) ok=1; 357 if (ctx->error == X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION) ok=1; 358 359 if (ctx->error == X509_V_ERR_NO_EXPLICIT_POLICY) 360 policies_print(NULL, ctx); 361 return ok; 362 363 } 364 if ((ctx->error == X509_V_OK) && (ok == 2)) 365 policies_print(NULL, ctx); 366 if (!v_verbose) 367 ERR_clear_error(); 368 return(ok); 369 } 370