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; 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 char *engine=NULL; 90 91 cert_ctx=X509_STORE_new(); 92 if (cert_ctx == NULL) goto end; 93 X509_STORE_set_verify_cb_func(cert_ctx,cb); 94 95 ERR_load_crypto_strings(); 96 97 apps_startup(); 98 99 if (bio_err == NULL) 100 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 101 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 102 103 if (!load_config(bio_err, NULL)) 104 goto end; 105 106 argc--; 107 argv++; 108 for (;;) 109 { 110 if (argc >= 1) 111 { 112 if (strcmp(*argv,"-CApath") == 0) 113 { 114 if (argc-- < 1) goto end; 115 CApath= *(++argv); 116 } 117 else if (strcmp(*argv,"-CAfile") == 0) 118 { 119 if (argc-- < 1) goto end; 120 CAfile= *(++argv); 121 } 122 else if (strcmp(*argv,"-purpose") == 0) 123 { 124 X509_PURPOSE *xptmp; 125 if (argc-- < 1) goto end; 126 i = X509_PURPOSE_get_by_sname(*(++argv)); 127 if(i < 0) 128 { 129 BIO_printf(bio_err, "unrecognized purpose\n"); 130 goto end; 131 } 132 xptmp = X509_PURPOSE_get0(i); 133 purpose = X509_PURPOSE_get_id(xptmp); 134 } 135 else if (strcmp(*argv,"-untrusted") == 0) 136 { 137 if (argc-- < 1) goto end; 138 untfile= *(++argv); 139 } 140 else if (strcmp(*argv,"-trusted") == 0) 141 { 142 if (argc-- < 1) goto end; 143 trustfile= *(++argv); 144 } 145 else if (strcmp(*argv,"-engine") == 0) 146 { 147 if (--argc < 1) goto end; 148 engine= *(++argv); 149 } 150 else if (strcmp(*argv,"-help") == 0) 151 goto end; 152 else if (strcmp(*argv,"-ignore_critical") == 0) 153 vflags |= X509_V_FLAG_IGNORE_CRITICAL; 154 else if (strcmp(*argv,"-issuer_checks") == 0) 155 vflags |= X509_V_FLAG_CB_ISSUER_CHECK; 156 else if (strcmp(*argv,"-crl_check") == 0) 157 vflags |= X509_V_FLAG_CRL_CHECK; 158 else if (strcmp(*argv,"-crl_check_all") == 0) 159 vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL; 160 else if (strcmp(*argv,"-verbose") == 0) 161 v_verbose=1; 162 else if (argv[0][0] == '-') 163 goto end; 164 else 165 break; 166 argc--; 167 argv++; 168 } 169 else 170 break; 171 } 172 173 e = setup_engine(bio_err, engine, 0); 174 175 lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file()); 176 if (lookup == NULL) abort(); 177 if (CAfile) { 178 i=X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM); 179 if(!i) { 180 BIO_printf(bio_err, "Error loading file %s\n", CAfile); 181 ERR_print_errors(bio_err); 182 goto end; 183 } 184 } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT); 185 186 lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir()); 187 if (lookup == NULL) abort(); 188 if (CApath) { 189 i=X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM); 190 if(!i) { 191 BIO_printf(bio_err, "Error loading directory %s\n", CApath); 192 ERR_print_errors(bio_err); 193 goto end; 194 } 195 } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT); 196 197 ERR_clear_error(); 198 199 if(untfile) { 200 if(!(untrusted = load_untrusted(untfile))) { 201 BIO_printf(bio_err, "Error loading untrusted file %s\n", untfile); 202 ERR_print_errors(bio_err); 203 goto end; 204 } 205 } 206 207 if(trustfile) { 208 if(!(trusted = load_untrusted(trustfile))) { 209 BIO_printf(bio_err, "Error loading untrusted file %s\n", trustfile); 210 ERR_print_errors(bio_err); 211 goto end; 212 } 213 } 214 215 if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, purpose, e); 216 else 217 for (i=0; i<argc; i++) 218 check(cert_ctx,argv[i], untrusted, trusted, purpose, e); 219 ret=0; 220 end: 221 if (ret == 1) { 222 BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check] [-engine e] 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 (cert_ctx != NULL) X509_STORE_free(cert_ctx); 232 sk_X509_pop_free(untrusted, X509_free); 233 sk_X509_pop_free(trusted, X509_free); 234 apps_shutdown(); 235 OPENSSL_EXIT(ret); 236 } 237 238 static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e) 239 { 240 X509 *x=NULL; 241 int i=0,ret=0; 242 X509_STORE_CTX *csc; 243 244 x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file"); 245 if (x == NULL) 246 goto end; 247 fprintf(stdout,"%s: ",(file == NULL)?"stdin":file); 248 249 csc = X509_STORE_CTX_new(); 250 if (csc == NULL) 251 { 252 ERR_print_errors(bio_err); 253 goto end; 254 } 255 X509_STORE_set_flags(ctx, vflags); 256 if(!X509_STORE_CTX_init(csc,ctx,x,uchain)) 257 { 258 ERR_print_errors(bio_err); 259 goto end; 260 } 261 if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain); 262 if(purpose >= 0) X509_STORE_CTX_set_purpose(csc, purpose); 263 i=X509_verify_cert(csc); 264 X509_STORE_CTX_free(csc); 265 266 ret=0; 267 end: 268 if (i) 269 { 270 fprintf(stdout,"OK\n"); 271 ret=1; 272 } 273 else 274 ERR_print_errors(bio_err); 275 if (x != NULL) X509_free(x); 276 277 return(ret); 278 } 279 280 static STACK_OF(X509) *load_untrusted(char *certfile) 281 { 282 STACK_OF(X509_INFO) *sk=NULL; 283 STACK_OF(X509) *stack=NULL, *ret=NULL; 284 BIO *in=NULL; 285 X509_INFO *xi; 286 287 if(!(stack = sk_X509_new_null())) { 288 BIO_printf(bio_err,"memory allocation failure\n"); 289 goto end; 290 } 291 292 if(!(in=BIO_new_file(certfile, "r"))) { 293 BIO_printf(bio_err,"error opening the file, %s\n",certfile); 294 goto end; 295 } 296 297 /* This loads from a file, a stack of x509/crl/pkey sets */ 298 if(!(sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL))) { 299 BIO_printf(bio_err,"error reading the file, %s\n",certfile); 300 goto end; 301 } 302 303 /* scan over it and pull out the certs */ 304 while (sk_X509_INFO_num(sk)) 305 { 306 xi=sk_X509_INFO_shift(sk); 307 if (xi->x509 != NULL) 308 { 309 sk_X509_push(stack,xi->x509); 310 xi->x509=NULL; 311 } 312 X509_INFO_free(xi); 313 } 314 if(!sk_X509_num(stack)) { 315 BIO_printf(bio_err,"no certificates in file, %s\n",certfile); 316 sk_X509_free(stack); 317 goto end; 318 } 319 ret=stack; 320 end: 321 BIO_free(in); 322 sk_X509_INFO_free(sk); 323 return(ret); 324 } 325 326 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx) 327 { 328 char buf[256]; 329 330 if (!ok) 331 { 332 X509_NAME_oneline( 333 X509_get_subject_name(ctx->current_cert),buf, 334 sizeof buf); 335 printf("%s\n",buf); 336 printf("error %d at %d depth lookup:%s\n",ctx->error, 337 ctx->error_depth, 338 X509_verify_cert_error_string(ctx->error)); 339 if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED) ok=1; 340 /* since we are just checking the certificates, it is 341 * ok if they are self signed. But we should still warn 342 * the user. 343 */ 344 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1; 345 /* Continue after extension errors too */ 346 if (ctx->error == X509_V_ERR_INVALID_CA) ok=1; 347 if (ctx->error == X509_V_ERR_PATH_LENGTH_EXCEEDED) ok=1; 348 if (ctx->error == X509_V_ERR_INVALID_PURPOSE) ok=1; 349 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1; 350 if (ctx->error == X509_V_ERR_CRL_HAS_EXPIRED) ok=1; 351 if (ctx->error == X509_V_ERR_CRL_NOT_YET_VALID) ok=1; 352 if (ctx->error == X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION) ok=1; 353 } 354 if (!v_verbose) 355 ERR_clear_error(); 356 return(ok); 357 } 358 359