apps/smime.c

   1 /* smime.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 1999.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 /* S/MIME utility function */
  60
  61 #include <stdio.h>
  62 #include <string.h>
  63 #include "apps.h"
  64 #include <openssl/crypto.h>
  65 #include <openssl/pem.h>
  66 #include <openssl/err.h>
  67
  68 #undef PROG
  69 #define PROG smime_main
  70 static X509 *load_cert(char *file);
  71 static EVP_PKEY *load_key(char *file, char *pass);
  72 static STACK_OF(X509) *load_certs(char *file);
  73 static X509_STORE *setup_verify(char *CAfile, char *CApath);
  74 static int save_certs(char *signerfile, STACK_OF(X509) *signers);
  75
  76 #define SMIME_OP        0x10
  77 #define SMIME_ENCRYPT   (1 | SMIME_OP)
  78 #define SMIME_DECRYPT   2
  79 #define SMIME_SIGN      (3 | SMIME_OP)
  80 #define SMIME_VERIFY    4
  81 #define SMIME_PK7OUT    5
  82
  83 int MAIN(int, char **);
  84
  85 int MAIN(int argc, char **argv)
  86 {
  87         int operation = 0;
  88         int ret = 0;
  89         char **args;
  90         char *inmode = "r", *outmode = "w";
  91         char *infile = NULL, *outfile = NULL;
  92         char *signerfile = NULL, *recipfile = NULL;
  93         char *certfile = NULL, *keyfile = NULL;
  94         EVP_CIPHER *cipher = NULL;
  95         PKCS7 *p7 = NULL;
  96         X509_STORE *store = NULL;
  97         X509 *cert = NULL, *recip = NULL, *signer = NULL;
  98         EVP_PKEY *key = NULL;
  99         STACK_OF(X509) *encerts = NULL, *other = NULL;
 100         BIO *in = NULL, *out = NULL, *indata = NULL;
 101         int badarg = 0;
 102         int flags = PKCS7_DETACHED;
 103         char *to = NULL, *from = NULL, *subject = NULL;
 104         char *CAfile = NULL, *CApath = NULL, *passin = NULL;
 105         char *inrand = NULL;
 106         int need_rand = 0;
 107         args = argv + 1;
 108
 109         ret = 1;
 110
 111         while (!badarg && *args && *args[0] == '-') {
 112                 if (!strcmp (*args, "-encrypt")) operation = SMIME_ENCRYPT;
 113                 else if (!strcmp (*args, "-decrypt")) operation = SMIME_DECRYPT;
 114                 else if (!strcmp (*args, "-sign")) operation = SMIME_SIGN;
 115                 else if (!strcmp (*args, "-verify")) operation = SMIME_VERIFY;
 116                 else if (!strcmp (*args, "-pk7out")) operation = SMIME_PK7OUT;
 117 #ifndef NO_DES
 118                 else if (!strcmp (*args, "-des3"))
 119                                 cipher = EVP_des_ede3_cbc();
 120                 else if (!strcmp (*args, "-des"))
 121                                 cipher = EVP_des_cbc();
 122 #endif
 123 #ifndef NO_RC2
 124                 else if (!strcmp (*args, "-rc2-40"))
 125                                 cipher = EVP_rc2_40_cbc();
 126                 else if (!strcmp (*args, "-rc2-128"))
 127                                 cipher = EVP_rc2_cbc();
 128                 else if (!strcmp (*args, "-rc2-64"))
 129                                 cipher = EVP_rc2_64_cbc();
 130 #endif
 131                 else if (!strcmp (*args, "-text"))
 132                                 flags |= PKCS7_TEXT;
 133                 else if (!strcmp (*args, "-nointern"))
 134                                 flags |= PKCS7_NOINTERN;
 135                 else if (!strcmp (*args, "-noverify"))
 136                                 flags |= PKCS7_NOVERIFY;
 137                 else if (!strcmp (*args, "-nochain"))
 138                                 flags |= PKCS7_NOCHAIN;
 139                 else if (!strcmp (*args, "-nocerts"))
 140                                 flags |= PKCS7_NOCERTS;
 141                 else if (!strcmp (*args, "-noattr"))
 142                                 flags |= PKCS7_NOATTR;
 143                 else if (!strcmp (*args, "-nodetach"))
 144                                 flags &= ~PKCS7_DETACHED;
 145                 else if (!strcmp (*args, "-binary"))
 146                                 flags |= PKCS7_BINARY;
 147                 else if (!strcmp (*args, "-nosigs"))
 148                                 flags |= PKCS7_NOSIGS;
 149                 else if (!strcmp(*args,"-rand")) {
 150                         if (args[1]) {
 151                                 args++;
 152                                 inrand = *args;
 153                         } else badarg = 1;
 154                         need_rand = 1;
 155                 } else if (!strcmp(*args,"-passin")) {
 156                         if (args[1]) {
 157                                 args++;
 158                                 passin = *args;
 159                         } else badarg = 1;
 160                 } else if (!strcmp(*argv,"-envpassin")) {
 161                         if (args[1]) {
 162                                 args++;
 163                                 if(!(passin= getenv(*args))) {
 164                                         BIO_printf(bio_err,
 165                                          "Can't read environment variable %s\n",
 166                                                                 *args);
 167                                         badarg = 1;
 168                                 }
 169                         } else badarg = 1;
 170                 } else if (!strcmp (*args, "-to")) {
 171                         if (args[1]) {
 172                                 args++;
 173                                 to = *args;
 174                         } else badarg = 1;
 175                 } else if (!strcmp (*args, "-from")) {
 176                         if (args[1]) {
 177                                 args++;
 178                                 from = *args;
 179                         } else badarg = 1;
 180                 } else if (!strcmp (*args, "-subject")) {
 181                         if (args[1]) {
 182                                 args++;
 183                                 subject = *args;
 184                         } else badarg = 1;
 185                 } else if (!strcmp (*args, "-signer")) {
 186                         if (args[1]) {
 187                                 args++;
 188                                 signerfile = *args;
 189                         } else badarg = 1;
 190                 } else if (!strcmp (*args, "-recip")) {
 191                         if (args[1]) {
 192                                 args++;
 193                                 recipfile = *args;
 194                         } else badarg = 1;
 195                 } else if (!strcmp (*args, "-inkey")) {
 196                         if (args[1]) {
 197                                 args++;
 198                                 keyfile = *args;
 199                         } else badarg = 1;
 200                 } else if (!strcmp (*args, "-certfile")) {
 201                         if (args[1]) {
 202                                 args++;
 203                                 certfile = *args;
 204                         } else badarg = 1;
 205                 } else if (!strcmp (*args, "-CAfile")) {
 206                         if (args[1]) {
 207                                 args++;
 208                                 CAfile = *args;
 209                         } else badarg = 1;
 210                 } else if (!strcmp (*args, "-CApath")) {
 211                         if (args[1]) {
 212                                 args++;
 213                                 CApath = *args;
 214                         } else badarg = 1;
 215                 } else if (!strcmp (*args, "-in")) {
 216                         if (args[1]) {
 217                                 args++;
 218                                 infile = *args;
 219                         } else badarg = 1;
 220                 } else if (!strcmp (*args, "-out")) {
 221                         if (args[1]) {
 222                                 args++;
 223                                 outfile = *args;
 224                         } else badarg = 1;
 225                 } else badarg = 1;
 226                 args++;
 227         }
 228
 229         if(operation == SMIME_SIGN) {
 230                 if(!signerfile) {
 231                         BIO_printf(bio_err, "No signer certificate specified\n");
 232                         badarg = 1;
 233                 }
 234                 need_rand = 1;
 235         } else if(operation == SMIME_DECRYPT) {
 236                 if(!recipfile) {
 237                         BIO_printf(bio_err, "No recipient certificate and key specified\n");
 238                         badarg = 1;
 239                 }
 240         } else if(operation == SMIME_ENCRYPT) {
 241                 if(!*args) {
 242                         BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
 243                         badarg = 1;
 244                 }
 245                 need_rand = 1;
 246         } else if(!operation) badarg = 1;
 247
 248         if (badarg) {
 249                 BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
 250                 BIO_printf (bio_err, "where options are\n");
 251                 BIO_printf (bio_err, "-encrypt       encrypt message\n");
 252                 BIO_printf (bio_err, "-decrypt       decrypt encrypted message\n");
 253                 BIO_printf (bio_err, "-sign          sign message\n");
 254                 BIO_printf (bio_err, "-verify        verify signed message\n");
 255                 BIO_printf (bio_err, "-pk7out        output PKCS#7 structure\n");
 256 #ifndef NO_DES
 257                 BIO_printf (bio_err, "-des3          encrypt with triple DES\n");
 258                 BIO_printf (bio_err, "-des           encrypt with DES\n");
 259 #endif
 260 #ifndef NO_RC2
 261                 BIO_printf (bio_err, "-rc2-40        encrypt with RC2-40 (default)\n");
 262                 BIO_printf (bio_err, "-rc2-64        encrypt with RC2-64\n");
 263                 BIO_printf (bio_err, "-rc2-128       encrypt with RC2-128\n");
 264 #endif
 265                 BIO_printf (bio_err, "-nointern      don't search certificates in message for signer\n");
 266                 BIO_printf (bio_err, "-nosigs        don't verify message signature\n");
 267                 BIO_printf (bio_err, "-noverify      don't verify signers certificate\n");
 268                 BIO_printf (bio_err, "-nocerts       don't include signers certificate when signing\n");
 269                 BIO_printf (bio_err, "-nodetach      use opaque signing\n");
 270                 BIO_printf (bio_err, "-noattr        don't include any signed attributes\n");
 271                 BIO_printf (bio_err, "-binary        don't translate message to text\n");
 272                 BIO_printf (bio_err, "-certfile file other certificates file\n");
 273                 BIO_printf (bio_err, "-signer file   signer certificate file\n");
 274                 BIO_printf (bio_err, "-recip  file   recipient certificate file for decryption\n");
 275                 BIO_printf (bio_err, "-in file       input file\n");
 276                 BIO_printf (bio_err, "-inkey file    input private key (if not signer or recipient)\n");
 277                 BIO_printf (bio_err, "-out file      output file\n");
 278                 BIO_printf (bio_err, "-to addr       to address\n");
 279                 BIO_printf (bio_err, "-from ad       from address\n");
 280                 BIO_printf (bio_err, "-subject s     subject\n");
 281                 BIO_printf (bio_err, "-text          include or delete text MIME headers\n");
 282                 BIO_printf (bio_err, "-CApath dir    trusted certificates directory\n");
 283                 BIO_printf (bio_err, "-CAfile file   trusted certificates file\n");
 284                 BIO_printf(bio_err,  "-rand file:file:...\n");
 285                 BIO_printf(bio_err,  "               load the file (or the files in the directory) into\n");
 286                 BIO_printf(bio_err,  "               the random number generator\n");
 287                 BIO_printf (bio_err, "cert.pem       recipient certificate(s) for encryption\n");
 288                 goto end;
 289         }
 290
 291         if (need_rand) {
 292                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 293                 if (inrand != NULL)
 294                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 295                                 app_RAND_load_files(inrand));
 296         }
 297
 298         ret = 2;
 299
 300         if(operation != SMIME_SIGN) flags &= ~PKCS7_DETACHED;
 301
 302         if(flags & PKCS7_BINARY) {
 303                 if(operation & SMIME_OP) inmode = "rb";
 304                 else outmode = "rb";
 305         }
 306
 307         if(operation == SMIME_ENCRYPT) {
 308                 if (!cipher) {
 309 #ifndef NO_RC2
 310                         cipher = EVP_rc2_40_cbc();
 311 #else
 312                         BIO_printf(bio_err, "No cipher selected\n");
 313                         goto end;
 314 #endif
 315                 }
 316 #ifdef CRYPTO_MDEBUG
 317                 CRYPTO_push_info("load encryption certificates");
 318 #endif
 319                 encerts = sk_X509_new_null();
 320                 while (*args) {
 321                         if(!(cert = load_cert(*args))) {
 322                                 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
 323                                 goto end;
 324                         }
 325                         sk_X509_push(encerts, cert);
 326                         cert = NULL;
 327                         args++;
 328                 }
 329 #ifdef CRYPTO_MDEBUG
 330                 CRYPTO_pop_info();
 331 #endif
 332         }
 333
 334         if(signerfile && (operation == SMIME_SIGN)) {
 335 #ifdef CRYPTO_MDEBUG
 336                 CRYPTO_push_info("load signer certificate");
 337 #endif
 338                 if(!(signer = load_cert(signerfile))) {
 339                         BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
 340                         goto end;
 341                 }
 342 #ifdef CRYPTO_MDEBUG
 343                 CRYPTO_pop_info();
 344 #endif
 345         }
 346
 347         if(certfile) {
 348 #ifdef CRYPTO_MDEBUG
 349                 CRYPTO_push_info("load other certfiles");
 350 #endif
 351                 if(!(other = load_certs(certfile))) {
 352                         BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
 353                         ERR_print_errors(bio_err);
 354                         goto end;
 355                 }
 356 #ifdef CRYPTO_MDEBUG
 357                 CRYPTO_pop_info();
 358 #endif
 359         }
 360
 361         if(recipfile && (operation == SMIME_DECRYPT)) {
 362 #ifdef CRYPTO_MDEBUG
 363                 CRYPTO_push_info("load recipient certificate");
 364 #endif
 365                 if(!(recip = load_cert(recipfile))) {
 366                         BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
 367                         ERR_print_errors(bio_err);
 368                         goto end;
 369                 }
 370 #ifdef CRYPTO_MDEBUG
 371                 CRYPTO_pop_info();
 372 #endif
 373         }
 374
 375         if(operation == SMIME_DECRYPT) {
 376                 if(!keyfile) keyfile = recipfile;
 377         } else if(operation == SMIME_SIGN) {
 378                 if(!keyfile) keyfile = signerfile;
 379         } else keyfile = NULL;
 380
 381         if(keyfile) {
 382 #ifdef CRYPTO_MDEBUG
 383                 CRYPTO_push_info("load keyfile");
 384 #endif
 385                 if(!(key = load_key(keyfile, passin))) {
 386                         BIO_printf(bio_err, "Can't read recipient certificate file %s\n", keyfile);
 387                         ERR_print_errors(bio_err);
 388                         goto end;
 389                 }
 390 #ifdef CRYPTO_MDEBUG
 391                 CRYPTO_pop_info();
 392 #endif
 393         }
 394
 395 #ifdef CRYPTO_MDEBUG
 396         CRYPTO_push_info("open input files");
 397 #endif
 398         if (infile) {
 399                 if (!(in = BIO_new_file(infile, inmode))) {
 400                         BIO_printf (bio_err,
 401                                  "Can't open input file %s\n", infile);
 402                         goto end;
 403                 }
 404         } else in = BIO_new_fp(stdin, BIO_NOCLOSE);
 405 #ifdef CRYPTO_MDEBUG
 406         CRYPTO_pop_info();
 407 #endif
 408
 409 #ifdef CRYPTO_MDEBUG
 410         CRYPTO_push_info("open output files");
 411 #endif
 412         if (outfile) {
 413                 if (!(out = BIO_new_file(outfile, outmode))) {
 414                         BIO_printf (bio_err,
 415                                  "Can't open output file %s\n", outfile);
 416                         goto end;
 417                 }
 418         } else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 419 #ifdef CRYPTO_MDEBUG
 420         CRYPTO_pop_info();
 421 #endif
 422
 423         if(operation == SMIME_VERIFY) {
 424 #ifdef CRYPTO_MDEBUG
 425                 CRYPTO_push_info("setup_verify");
 426 #endif
 427                 if(!(store = setup_verify(CAfile, CApath))) goto end;
 428 #ifdef CRYPTO_MDEBUG
 429                 CRYPTO_pop_info();
 430 #endif
 431         }
 432
 433         ret = 3;
 434
 435         if(operation == SMIME_ENCRYPT) {
 436 #ifdef CRYPTO_MDEBUG
 437                 CRYPTO_push_info("PKCS7_encrypt");
 438 #endif
 439                 p7 = PKCS7_encrypt(encerts, in, cipher, flags);
 440 #ifdef CRYPTO_MDEBUG
 441                 CRYPTO_pop_info();
 442 #endif
 443         } else if(operation == SMIME_SIGN) {
 444 #ifdef CRYPTO_MDEBUG
 445                 CRYPTO_push_info("PKCS7_sign");
 446 #endif
 447                 p7 = PKCS7_sign(signer, key, other, in, flags);
 448                 BIO_reset(in);
 449 #ifdef CRYPTO_MDEBUG
 450                 CRYPTO_pop_info();
 451 #endif
 452         } else {
 453 #ifdef CRYPTO_MDEBUG
 454                 CRYPTO_push_info("SMIME_read_PKCS7");
 455 #endif
 456                 if(!(p7 = SMIME_read_PKCS7(in, &indata))) {
 457                         BIO_printf(bio_err, "Error reading S/MIME message\n");
 458                         goto end;
 459                 }
 460 #ifdef CRYPTO_MDEBUG
 461                 CRYPTO_pop_info();
 462 #endif
 463         }
 464
 465         if(!p7) {
 466                 BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
 467                 goto end;
 468         }
 469
 470         ret = 4;
 471         if(operation == SMIME_DECRYPT) {
 472 #ifdef CRYPTO_MDEBUG
 473                 CRYPTO_push_info("PKCS7_decrypt");
 474 #endif
 475                 if(!PKCS7_decrypt(p7, key, recip, out, flags)) {
 476                         BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
 477                         goto end;
 478                 }
 479 #ifdef CRYPTO_MDEBUG
 480                 CRYPTO_pop_info();
 481 #endif
 482         } else if(operation == SMIME_VERIFY) {
 483                 STACK_OF(X509) *signers;
 484 #ifdef CRYPTO_MDEBUG
 485                 CRYPTO_push_info("PKCS7_verify");
 486 #endif
 487                 if(PKCS7_verify(p7, other, store, indata, out, flags)) {
 488                         BIO_printf(bio_err, "Verification Successful\n");
 489                 } else {
 490                         BIO_printf(bio_err, "Verification Failure\n");
 491                         goto end;
 492                 }
 493 #ifdef CRYPTO_MDEBUG
 494                 CRYPTO_pop_info();
 495                 CRYPTO_push_info("PKCS7_iget_signers");
 496 #endif
 497                 signers = PKCS7_iget_signers(p7, other, flags);
 498 #ifdef CRYPTO_MDEBUG
 499                 CRYPTO_pop_info();
 500                 CRYPTO_push_info("save_certs");
 501 #endif
 502                 if(!save_certs(signerfile, signers)) {
 503                         BIO_printf(bio_err, "Error writing signers to %s\n",
 504                                                                 signerfile);
 505                         ret = 5;
 506                         goto end;
 507                 }
 508 #ifdef CRYPTO_MDEBUG
 509                 CRYPTO_pop_info();
 510 #endif
 511                 sk_X509_free(signers);
 512         } else if(operation == SMIME_PK7OUT) {
 513                 PEM_write_bio_PKCS7(out, p7);
 514         } else {
 515                 if(to) BIO_printf(out, "To: %s\n", to);
 516                 if(from) BIO_printf(out, "From: %s\n", from);
 517                 if(subject) BIO_printf(out, "Subject: %s\n", subject);
 518                 SMIME_write_PKCS7(out, p7, in, flags);
 519         }
 520         ret = 0;
 521 end:
 522 #ifdef CRYPTO_MDEBUG
 523         CRYPTO_remove_all_info();
 524 #endif
 525         if (need_rand)
 526                 app_RAND_write_file(NULL, bio_err);
 527         if(ret) ERR_print_errors(bio_err);
 528         sk_X509_pop_free(encerts, X509_free);
 529         sk_X509_pop_free(other, X509_free);
 530         X509_STORE_free(store);
 531         X509_free(cert);
 532         X509_free(recip);
 533         X509_free(signer);
 534         EVP_PKEY_free(key);
 535         PKCS7_free(p7);
 536         BIO_free(in);
 537         BIO_free(indata);
 538         BIO_free(out);
 539         return (ret);
 540 }
 541
 542 static X509 *load_cert(char *file)
 543 {
 544         BIO *in;
 545         X509 *cert;
 546         if(!(in = BIO_new_file(file, "r"))) return NULL;
 547         cert = PEM_read_bio_X509(in, NULL, NULL,NULL);
 548         BIO_free(in);
 549         return cert;
 550 }
 551
 552 static EVP_PKEY *load_key(char *file, char *pass)
 553 {
 554         BIO *in;
 555         EVP_PKEY *key;
 556         if(!(in = BIO_new_file(file, "r"))) return NULL;
 557         key = PEM_read_bio_PrivateKey(in, NULL,PEM_cb,pass);
 558         BIO_free(in);
 559         return key;
 560 }
 561
 562 static STACK_OF(X509) *load_certs(char *file)
 563 {
 564         BIO *in;
 565         int i;
 566         STACK_OF(X509) *othercerts;
 567         STACK_OF(X509_INFO) *allcerts;
 568         X509_INFO *xi;
 569         if(!(in = BIO_new_file(file, "r"))) return NULL;
 570         othercerts = sk_X509_new(NULL);
 571         if(!othercerts) return NULL;
 572         allcerts = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
 573         for(i = 0; i < sk_X509_INFO_num(allcerts); i++) {
 574                 xi = sk_X509_INFO_value (allcerts, i);
 575                 if (xi->x509) {
 576                         sk_X509_push(othercerts, xi->x509);
 577                         xi->x509 = NULL;
 578                 }
 579         }
 580         sk_X509_INFO_pop_free(allcerts, X509_INFO_free);
 581         BIO_free(in);
 582         return othercerts;
 583 }
 584
 585 static X509_STORE *setup_verify(char *CAfile, char *CApath)
 586 {
 587         X509_STORE *store;
 588         X509_LOOKUP *lookup;
 589 #ifdef CRYPTO_MDEBUG
 590         CRYPTO_push_info("X509_STORE_new");
 591 #endif
 592         if(!(store = X509_STORE_new())) goto end;
 593 #ifdef CRYPTO_MDEBUG
 594         CRYPTO_pop_info();
 595         CRYPTO_push_info("X509_STORE_add_lookup(...file)");
 596 #endif
 597         lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
 598         if (lookup == NULL) goto end;
 599 #ifdef CRYPTO_MDEBUG
 600         CRYPTO_pop_info();
 601         CRYPTO_push_info("X509_LOOKUP_load_file");
 602 #endif
 603         if (CAfile) {
 604                 if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
 605                         BIO_printf(bio_err, "Error loading file %s\n", CAfile);
 606                         goto end;
 607                 }
 608         } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
 609
 610 #ifdef CRYPTO_MDEBUG
 611         CRYPTO_pop_info();
 612         CRYPTO_push_info("X509_STORE_add_lookup(...hash_dir)");
 613 #endif
 614         lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
 615         if (lookup == NULL) goto end;
 616 #ifdef CRYPTO_MDEBUG
 617         CRYPTO_pop_info();
 618         CRYPTO_push_info("X509_LOOKUP_add_dir");
 619 #endif
 620         if (CApath) {
 621                 if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
 622                         BIO_printf(bio_err, "Error loading directory %s\n", CApath);
 623                         goto end;
 624                 }
 625         } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
 626 #ifdef CRYPTO_MDEBUG
 627         CRYPTO_pop_info();
 628 #endif
 629
 630         ERR_clear_error();
 631         return store;
 632         end:
 633         X509_STORE_free(store);
 634         return NULL;
 635 }
 636
 637 int save_certs(char *signerfile, STACK_OF(X509) *signers)
 638 {
 639         int i;
 640         BIO *tmp;
 641         if(!signerfile) return 1;
 642         tmp = BIO_new_file(signerfile, "w");
 643         if(!tmp) return 0;
 644         for(i = 0; i < sk_X509_num(signers); i++)
 645                 PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
 646         BIO_free(tmp);
 647         return 1;
 648 }
 649