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 72static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx); 73static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e); 74static STACK_OF(X509) *load_untrusted(char *file); 75static int v_verbose=0, vflags = 0; 76 77int MAIN(int, char **); 78 79int MAIN(int argc, char **argv) 80 { 81 ENGINE *e = NULL; 82 int i,ret=1; 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#ifndef OPENSSL_NO_ENGINE 90 char *engine=NULL; 91#endif 92 93 cert_ctx=X509_STORE_new(); 94 if (cert_ctx == NULL) goto end; 95 X509_STORE_set_verify_cb_func(cert_ctx,cb); 96 97 ERR_load_crypto_strings(); 98 99 apps_startup(); 100 101 if (bio_err == NULL) 102 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 103 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 104 105 if (!load_config(bio_err, NULL)) 106 goto end; 107 108 argc--; 109 argv++; 110 for (;;) 111 { 112 if (argc >= 1) 113 { 114 if (strcmp(*argv,"-CApath") == 0) 115 { 116 if (argc-- < 1) goto end; 117 CApath= *(++argv); 118 } 119 else if (strcmp(*argv,"-CAfile") == 0) 120 { 121 if (argc-- < 1) goto end; 122 CAfile= *(++argv); 123 } 124 else if (strcmp(*argv,"-purpose") == 0) 125 { 126 X509_PURPOSE *xptmp; 127 if (argc-- < 1) goto end; 128 i = X509_PURPOSE_get_by_sname(*(++argv)); 129 if(i < 0) 130 { 131 BIO_printf(bio_err, "unrecognized purpose\n"); 132 goto end; 133 } 134 xptmp = X509_PURPOSE_get0(i); 135 purpose = X509_PURPOSE_get_id(xptmp); 136 } 137 else if (strcmp(*argv,"-untrusted") == 0) 138 { 139 if (argc-- < 1) goto end; 140 untfile= *(++argv); 141 } 142 else if (strcmp(*argv,"-trusted") == 0) 143 { 144 if (argc-- < 1) goto end; 145 trustfile= *(++argv); 146 } 147#ifndef OPENSSL_NO_ENGINE 148 else if (strcmp(*argv,"-engine") == 0) 149 { 150 if (--argc < 1) goto end; 151 engine= *(++argv); 152 } 153#endif 154 else if (strcmp(*argv,"-help") == 0) 155 goto end; 156 else if (strcmp(*argv,"-ignore_critical") == 0) 157 vflags |= X509_V_FLAG_IGNORE_CRITICAL; 158 else if (strcmp(*argv,"-issuer_checks") == 0) 159 vflags |= X509_V_FLAG_CB_ISSUER_CHECK; 160 else if (strcmp(*argv,"-crl_check") == 0) 161 vflags |= X509_V_FLAG_CRL_CHECK; 162 else if (strcmp(*argv,"-crl_check_all") == 0) 163 vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL; 164 else if (strcmp(*argv,"-verbose") == 0) 165 v_verbose=1; 166 else if (argv[0][0] == '-') 167 goto end; 168 else 169 break; 170 argc--; 171 argv++; 172 } 173 else 174 break; 175 } 176 177#ifndef OPENSSL_NO_ENGINE 178 e = setup_engine(bio_err, engine, 0); 179#endif 180 181 lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file()); 182 if (lookup == NULL) abort(); 183 if (CAfile) { 184 i=X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM); 185 if(!i) { 186 BIO_printf(bio_err, "Error loading file %s\n", CAfile); 187 ERR_print_errors(bio_err); 188 goto end; 189 } 190 } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT); 191 192 lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir()); 193 if (lookup == NULL) abort(); 194 if (CApath) { 195 i=X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM); 196 if(!i) { 197 BIO_printf(bio_err, "Error loading directory %s\n", CApath); 198 ERR_print_errors(bio_err); 199 goto end; 200 } 201 } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT); 202 203 ERR_clear_error(); 204 205 if(untfile) { 206 if(!(untrusted = load_untrusted(untfile))) { 207 BIO_printf(bio_err, "Error loading untrusted file %s\n", untfile); 208 ERR_print_errors(bio_err); 209 goto end; 210 } 211 } 212 213 if(trustfile) { 214 if(!(trusted = load_untrusted(trustfile))) { 215 BIO_printf(bio_err, "Error loading untrusted file %s\n", trustfile); 216 ERR_print_errors(bio_err); 217 goto end; 218 } 219 } 220 221 if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, purpose, e); 222 else 223 for (i=0; i<argc; i++) 224 check(cert_ctx,argv[i], untrusted, trusted, purpose, e); 225 ret=0; 226end: 227 if (ret == 1) { 228 BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]"); 229#ifndef OPENSSL_NO_ENGINE 230 BIO_printf(bio_err," [-engine e]"); 231#endif 232 BIO_printf(bio_err," cert1 cert2 ...\n"); 233 BIO_printf(bio_err,"recognized usages:\n"); 234 for(i = 0; i < X509_PURPOSE_get_count(); i++) { 235 X509_PURPOSE *ptmp; 236 ptmp = X509_PURPOSE_get0(i); 237 BIO_printf(bio_err, "\t%-10s\t%s\n", X509_PURPOSE_get0_sname(ptmp), 238 X509_PURPOSE_get0_name(ptmp)); 239 } 240 } 241 if (cert_ctx != NULL) X509_STORE_free(cert_ctx); 242 sk_X509_pop_free(untrusted, X509_free); 243 sk_X509_pop_free(trusted, X509_free); 244 apps_shutdown(); 245 OPENSSL_EXIT(ret); 246 } 247 248static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e) 249 { 250 X509 *x=NULL; 251 int i=0,ret=0; 252 X509_STORE_CTX *csc; 253 254 x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file"); 255 if (x == NULL) 256 goto end; 257 fprintf(stdout,"%s: ",(file == NULL)?"stdin":file); 258 259 csc = X509_STORE_CTX_new(); 260 if (csc == NULL) 261 { 262 ERR_print_errors(bio_err); 263 goto end; 264 } 265 X509_STORE_set_flags(ctx, vflags); 266 if(!X509_STORE_CTX_init(csc,ctx,x,uchain)) 267 { 268 ERR_print_errors(bio_err); 269 goto end; 270 } 271 if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain); 272 if(purpose >= 0) X509_STORE_CTX_set_purpose(csc, purpose); 273 i=X509_verify_cert(csc); 274 X509_STORE_CTX_free(csc); 275 276 ret=0; 277end: 278 if (i) 279 { 280 fprintf(stdout,"OK\n"); 281 ret=1; 282 } 283 else 284 ERR_print_errors(bio_err); 285 if (x != NULL) X509_free(x); 286 287 return(ret); 288 } 289 290static STACK_OF(X509) *load_untrusted(char *certfile) 291{ 292 STACK_OF(X509_INFO) *sk=NULL; 293 STACK_OF(X509) *stack=NULL, *ret=NULL; 294 BIO *in=NULL; 295 X509_INFO *xi; 296 297 if(!(stack = sk_X509_new_null())) { 298 BIO_printf(bio_err,"memory allocation failure\n"); 299 goto end; 300 } 301 302 if(!(in=BIO_new_file(certfile, "r"))) { 303 BIO_printf(bio_err,"error opening the file, %s\n",certfile); 304 goto end; 305 } 306 307 /* This loads from a file, a stack of x509/crl/pkey sets */ 308 if(!(sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL))) { 309 BIO_printf(bio_err,"error reading the file, %s\n",certfile); 310 goto end; 311 } 312 313 /* scan over it and pull out the certs */ 314 while (sk_X509_INFO_num(sk)) 315 { 316 xi=sk_X509_INFO_shift(sk); 317 if (xi->x509 != NULL) 318 { 319 sk_X509_push(stack,xi->x509); 320 xi->x509=NULL; 321 } 322 X509_INFO_free(xi); 323 } 324 if(!sk_X509_num(stack)) { 325 BIO_printf(bio_err,"no certificates in file, %s\n",certfile); 326 sk_X509_free(stack); 327 goto end; 328 } 329 ret=stack; 330end: 331 BIO_free(in); 332 sk_X509_INFO_free(sk); 333 return(ret); 334 } 335 336static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx) 337 { 338 char buf[256]; 339 340 if (!ok) 341 { 342 X509_NAME_oneline( 343 X509_get_subject_name(ctx->current_cert),buf, 344 sizeof buf); 345 printf("%s\n",buf); 346 printf("error %d at %d depth lookup:%s\n",ctx->error, 347 ctx->error_depth, 348 X509_verify_cert_error_string(ctx->error)); 349 if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED) ok=1; 350 /* since we are just checking the certificates, it is 351 * ok if they are self signed. But we should still warn 352 * the user. 353 */ 354 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1; 355 /* Continue after extension errors too */ 356 if (ctx->error == X509_V_ERR_INVALID_CA) ok=1; 357 if (ctx->error == X509_V_ERR_INVALID_NON_CA) ok=1; 358 if (ctx->error == X509_V_ERR_PATH_LENGTH_EXCEEDED) ok=1; 359 if (ctx->error == X509_V_ERR_INVALID_PURPOSE) ok=1; 360 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1; 361 if (ctx->error == X509_V_ERR_CRL_HAS_EXPIRED) ok=1; 362 if (ctx->error == X509_V_ERR_CRL_NOT_YET_VALID) ok=1; 363 if (ctx->error == X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION) ok=1; 364 } 365 if (!v_verbose) 366 ERR_clear_error(); 367 return(ok); 368 } 369 370