smime.c revision 162912
1/* smime.c */ 2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 3 * project. 4 */ 5/* ==================================================================== 6 * Copyright (c) 1999-2004 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#include <openssl/x509_vfy.h> 68#include <openssl/x509v3.h> 69 70#undef PROG 71#define PROG smime_main 72static int save_certs(char *signerfile, STACK_OF(X509) *signers); 73static int smime_cb(int ok, X509_STORE_CTX *ctx); 74 75#define SMIME_OP 0x10 76#define SMIME_ENCRYPT (1 | SMIME_OP) 77#define SMIME_DECRYPT 2 78#define SMIME_SIGN (3 | SMIME_OP) 79#define SMIME_VERIFY 4 80#define SMIME_PK7OUT 5 81 82int MAIN(int, char **); 83 84int MAIN(int argc, char **argv) 85 { 86 ENGINE *e = NULL; 87 int operation = 0; 88 int ret = 0; 89 char **args; 90 const char *inmode = "r", *outmode = "w"; 91 char *infile = NULL, *outfile = NULL; 92 char *signerfile = NULL, *recipfile = NULL; 93 char *certfile = NULL, *keyfile = NULL, *contfile=NULL; 94 const 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; 105 char *passargin = NULL, *passin = NULL; 106 char *inrand = NULL; 107 int need_rand = 0; 108 int informat = FORMAT_SMIME, outformat = FORMAT_SMIME; 109 int keyform = FORMAT_PEM; 110#ifndef OPENSSL_NO_ENGINE 111 char *engine=NULL; 112#endif 113 114 X509_VERIFY_PARAM *vpm = NULL; 115 116 args = argv + 1; 117 ret = 1; 118 119 apps_startup(); 120 121 if (bio_err == NULL) 122 { 123 if ((bio_err = BIO_new(BIO_s_file())) != NULL) 124 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT); 125 } 126 127 if (!load_config(bio_err, NULL)) 128 goto end; 129 130 while (!badarg && *args && *args[0] == '-') 131 { 132 if (!strcmp (*args, "-encrypt")) 133 operation = SMIME_ENCRYPT; 134 else if (!strcmp (*args, "-decrypt")) 135 operation = SMIME_DECRYPT; 136 else if (!strcmp (*args, "-sign")) 137 operation = SMIME_SIGN; 138 else if (!strcmp (*args, "-verify")) 139 operation = SMIME_VERIFY; 140 else if (!strcmp (*args, "-pk7out")) 141 operation = SMIME_PK7OUT; 142#ifndef OPENSSL_NO_DES 143 else if (!strcmp (*args, "-des3")) 144 cipher = EVP_des_ede3_cbc(); 145 else if (!strcmp (*args, "-des")) 146 cipher = EVP_des_cbc(); 147#endif 148#ifndef OPENSSL_NO_RC2 149 else if (!strcmp (*args, "-rc2-40")) 150 cipher = EVP_rc2_40_cbc(); 151 else if (!strcmp (*args, "-rc2-128")) 152 cipher = EVP_rc2_cbc(); 153 else if (!strcmp (*args, "-rc2-64")) 154 cipher = EVP_rc2_64_cbc(); 155#endif 156#ifndef OPENSSL_NO_AES 157 else if (!strcmp(*args,"-aes128")) 158 cipher = EVP_aes_128_cbc(); 159 else if (!strcmp(*args,"-aes192")) 160 cipher = EVP_aes_192_cbc(); 161 else if (!strcmp(*args,"-aes256")) 162 cipher = EVP_aes_256_cbc(); 163#endif 164#ifndef OPENSSL_NO_CAMELLIA 165 else if (!strcmp(*args,"-camellia128")) 166 cipher = EVP_camellia_128_cbc(); 167 else if (!strcmp(*args,"-camellia192")) 168 cipher = EVP_camellia_192_cbc(); 169 else if (!strcmp(*args,"-camellia256")) 170 cipher = EVP_camellia_256_cbc(); 171#endif 172 else if (!strcmp (*args, "-text")) 173 flags |= PKCS7_TEXT; 174 else if (!strcmp (*args, "-nointern")) 175 flags |= PKCS7_NOINTERN; 176 else if (!strcmp (*args, "-noverify")) 177 flags |= PKCS7_NOVERIFY; 178 else if (!strcmp (*args, "-nochain")) 179 flags |= PKCS7_NOCHAIN; 180 else if (!strcmp (*args, "-nocerts")) 181 flags |= PKCS7_NOCERTS; 182 else if (!strcmp (*args, "-noattr")) 183 flags |= PKCS7_NOATTR; 184 else if (!strcmp (*args, "-nodetach")) 185 flags &= ~PKCS7_DETACHED; 186 else if (!strcmp (*args, "-nosmimecap")) 187 flags |= PKCS7_NOSMIMECAP; 188 else if (!strcmp (*args, "-binary")) 189 flags |= PKCS7_BINARY; 190 else if (!strcmp (*args, "-nosigs")) 191 flags |= PKCS7_NOSIGS; 192 else if (!strcmp (*args, "-nooldmime")) 193 flags |= PKCS7_NOOLDMIMETYPE; 194 else if (!strcmp (*args, "-crlfeol")) 195 flags |= PKCS7_CRLFEOL; 196 else if (!strcmp(*args,"-rand")) 197 { 198 if (args[1]) 199 { 200 args++; 201 inrand = *args; 202 } 203 else 204 badarg = 1; 205 need_rand = 1; 206 } 207#ifndef OPENSSL_NO_ENGINE 208 else if (!strcmp(*args,"-engine")) 209 { 210 if (args[1]) 211 { 212 args++; 213 engine = *args; 214 } 215 else badarg = 1; 216 } 217#endif 218 else if (!strcmp(*args,"-passin")) 219 { 220 if (args[1]) 221 { 222 args++; 223 passargin = *args; 224 } 225 else 226 badarg = 1; 227 } 228 else if (!strcmp (*args, "-to")) 229 { 230 if (args[1]) 231 { 232 args++; 233 to = *args; 234 } 235 else 236 badarg = 1; 237 } 238 else if (!strcmp (*args, "-from")) 239 { 240 if (args[1]) 241 { 242 args++; 243 from = *args; 244 } 245 else badarg = 1; 246 } 247 else if (!strcmp (*args, "-subject")) 248 { 249 if (args[1]) 250 { 251 args++; 252 subject = *args; 253 } 254 else 255 badarg = 1; 256 } 257 else if (!strcmp (*args, "-signer")) 258 { 259 if (args[1]) 260 { 261 args++; 262 signerfile = *args; 263 } 264 else 265 badarg = 1; 266 } 267 else if (!strcmp (*args, "-recip")) 268 { 269 if (args[1]) 270 { 271 args++; 272 recipfile = *args; 273 } 274 else badarg = 1; 275 } 276 else if (!strcmp (*args, "-inkey")) 277 { 278 if (args[1]) 279 { 280 args++; 281 keyfile = *args; 282 } 283 else 284 badarg = 1; 285 } 286 else if (!strcmp (*args, "-keyform")) 287 { 288 if (args[1]) 289 { 290 args++; 291 keyform = str2fmt(*args); 292 } 293 else 294 badarg = 1; 295 } 296 else if (!strcmp (*args, "-certfile")) 297 { 298 if (args[1]) 299 { 300 args++; 301 certfile = *args; 302 } 303 else 304 badarg = 1; 305 } 306 else if (!strcmp (*args, "-CAfile")) 307 { 308 if (args[1]) 309 { 310 args++; 311 CAfile = *args; 312 } 313 else 314 badarg = 1; 315 } 316 else if (!strcmp (*args, "-CApath")) 317 { 318 if (args[1]) 319 { 320 args++; 321 CApath = *args; 322 } 323 else 324 badarg = 1; 325 } 326 else if (!strcmp (*args, "-in")) 327 { 328 if (args[1]) 329 { 330 args++; 331 infile = *args; 332 } 333 else 334 badarg = 1; 335 } 336 else if (!strcmp (*args, "-inform")) 337 { 338 if (args[1]) 339 { 340 args++; 341 informat = str2fmt(*args); 342 } 343 else 344 badarg = 1; 345 } 346 else if (!strcmp (*args, "-outform")) 347 { 348 if (args[1]) 349 { 350 args++; 351 outformat = str2fmt(*args); 352 } 353 else 354 badarg = 1; 355 } 356 else if (!strcmp (*args, "-out")) 357 { 358 if (args[1]) 359 { 360 args++; 361 outfile = *args; 362 } 363 else 364 badarg = 1; 365 } 366 else if (!strcmp (*args, "-content")) 367 { 368 if (args[1]) 369 { 370 args++; 371 contfile = *args; 372 } 373 else 374 badarg = 1; 375 } 376 else if (args_verify(&args, NULL, &badarg, bio_err, &vpm)) 377 continue; 378 else 379 badarg = 1; 380 args++; 381 } 382 383 384 if (operation == SMIME_SIGN) 385 { 386 if (!signerfile) 387 { 388 BIO_printf(bio_err, "No signer certificate specified\n"); 389 badarg = 1; 390 } 391 need_rand = 1; 392 } 393 else if (operation == SMIME_DECRYPT) 394 { 395 if (!recipfile && !keyfile) 396 { 397 BIO_printf(bio_err, "No recipient certificate or key specified\n"); 398 badarg = 1; 399 } 400 } 401 else if (operation == SMIME_ENCRYPT) 402 { 403 if (!*args) 404 { 405 BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n"); 406 badarg = 1; 407 } 408 need_rand = 1; 409 } 410 else if (!operation) 411 badarg = 1; 412 413 if (badarg) 414 { 415 BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n"); 416 BIO_printf (bio_err, "where options are\n"); 417 BIO_printf (bio_err, "-encrypt encrypt message\n"); 418 BIO_printf (bio_err, "-decrypt decrypt encrypted message\n"); 419 BIO_printf (bio_err, "-sign sign message\n"); 420 BIO_printf (bio_err, "-verify verify signed message\n"); 421 BIO_printf (bio_err, "-pk7out output PKCS#7 structure\n"); 422#ifndef OPENSSL_NO_DES 423 BIO_printf (bio_err, "-des3 encrypt with triple DES\n"); 424 BIO_printf (bio_err, "-des encrypt with DES\n"); 425#endif 426#ifndef OPENSSL_NO_RC2 427 BIO_printf (bio_err, "-rc2-40 encrypt with RC2-40 (default)\n"); 428 BIO_printf (bio_err, "-rc2-64 encrypt with RC2-64\n"); 429 BIO_printf (bio_err, "-rc2-128 encrypt with RC2-128\n"); 430#endif 431#ifndef OPENSSL_NO_AES 432 BIO_printf (bio_err, "-aes128, -aes192, -aes256\n"); 433 BIO_printf (bio_err, " encrypt PEM output with cbc aes\n"); 434#endif 435#ifndef OPENSSL_NO_CAMELLIA 436 BIO_printf (bio_err, "-camellia128, -camellia192, -camellia256\n"); 437 BIO_printf (bio_err, " encrypt PEM output with cbc camellia\n"); 438#endif 439 BIO_printf (bio_err, "-nointern don't search certificates in message for signer\n"); 440 BIO_printf (bio_err, "-nosigs don't verify message signature\n"); 441 BIO_printf (bio_err, "-noverify don't verify signers certificate\n"); 442 BIO_printf (bio_err, "-nocerts don't include signers certificate when signing\n"); 443 BIO_printf (bio_err, "-nodetach use opaque signing\n"); 444 BIO_printf (bio_err, "-noattr don't include any signed attributes\n"); 445 BIO_printf (bio_err, "-binary don't translate message to text\n"); 446 BIO_printf (bio_err, "-certfile file other certificates file\n"); 447 BIO_printf (bio_err, "-signer file signer certificate file\n"); 448 BIO_printf (bio_err, "-recip file recipient certificate file for decryption\n"); 449 BIO_printf (bio_err, "-in file input file\n"); 450 BIO_printf (bio_err, "-inform arg input format SMIME (default), PEM or DER\n"); 451 BIO_printf (bio_err, "-inkey file input private key (if not signer or recipient)\n"); 452 BIO_printf (bio_err, "-keyform arg input private key format (PEM or ENGINE)\n"); 453 BIO_printf (bio_err, "-out file output file\n"); 454 BIO_printf (bio_err, "-outform arg output format SMIME (default), PEM or DER\n"); 455 BIO_printf (bio_err, "-content file supply or override content for detached signature\n"); 456 BIO_printf (bio_err, "-to addr to address\n"); 457 BIO_printf (bio_err, "-from ad from address\n"); 458 BIO_printf (bio_err, "-subject s subject\n"); 459 BIO_printf (bio_err, "-text include or delete text MIME headers\n"); 460 BIO_printf (bio_err, "-CApath dir trusted certificates directory\n"); 461 BIO_printf (bio_err, "-CAfile file trusted certificates file\n"); 462 BIO_printf (bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n"); 463 BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n"); 464#ifndef OPENSSL_NO_ENGINE 465 BIO_printf (bio_err, "-engine e use engine e, possibly a hardware device.\n"); 466#endif 467 BIO_printf (bio_err, "-passin arg input file pass phrase source\n"); 468 BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 469 BIO_printf(bio_err, " load the file (or the files in the directory) into\n"); 470 BIO_printf(bio_err, " the random number generator\n"); 471 BIO_printf (bio_err, "cert.pem recipient certificate(s) for encryption\n"); 472 goto end; 473 } 474 475#ifndef OPENSSL_NO_ENGINE 476 e = setup_engine(bio_err, engine, 0); 477#endif 478 479 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) 480 { 481 BIO_printf(bio_err, "Error getting password\n"); 482 goto end; 483 } 484 485 if (need_rand) 486 { 487 app_RAND_load_file(NULL, bio_err, (inrand != NULL)); 488 if (inrand != NULL) 489 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 490 app_RAND_load_files(inrand)); 491 } 492 493 ret = 2; 494 495 if (operation != SMIME_SIGN) 496 flags &= ~PKCS7_DETACHED; 497 498 if (operation & SMIME_OP) 499 { 500 if (flags & PKCS7_BINARY) 501 inmode = "rb"; 502 if (outformat == FORMAT_ASN1) 503 outmode = "wb"; 504 } 505 else 506 { 507 if (flags & PKCS7_BINARY) 508 outmode = "wb"; 509 if (informat == FORMAT_ASN1) 510 inmode = "rb"; 511 } 512 513 if (operation == SMIME_ENCRYPT) 514 { 515 if (!cipher) 516 { 517#ifndef OPENSSL_NO_RC2 518 cipher = EVP_rc2_40_cbc(); 519#else 520 BIO_printf(bio_err, "No cipher selected\n"); 521 goto end; 522#endif 523 } 524 encerts = sk_X509_new_null(); 525 while (*args) 526 { 527 if (!(cert = load_cert(bio_err,*args,FORMAT_PEM, 528 NULL, e, "recipient certificate file"))) 529 { 530#if 0 /* An appropriate message is already printed */ 531 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args); 532#endif 533 goto end; 534 } 535 sk_X509_push(encerts, cert); 536 cert = NULL; 537 args++; 538 } 539 } 540 541 if (signerfile && (operation == SMIME_SIGN)) 542 { 543 if (!(signer = load_cert(bio_err,signerfile,FORMAT_PEM, NULL, 544 e, "signer certificate"))) 545 { 546#if 0 /* An appropri message has already been printed */ 547 BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile); 548#endif 549 goto end; 550 } 551 } 552 553 if (certfile) 554 { 555 if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL, 556 e, "certificate file"))) 557 { 558#if 0 /* An appropriate message has already been printed */ 559 BIO_printf(bio_err, "Can't read certificate file %s\n", certfile); 560#endif 561 ERR_print_errors(bio_err); 562 goto end; 563 } 564 } 565 566 if (recipfile && (operation == SMIME_DECRYPT)) 567 { 568 if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL, 569 e, "recipient certificate file"))) 570 { 571#if 0 /* An appropriate message has alrady been printed */ 572 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile); 573#endif 574 ERR_print_errors(bio_err); 575 goto end; 576 } 577 } 578 579 if (operation == SMIME_DECRYPT) 580 { 581 if (!keyfile) 582 keyfile = recipfile; 583 } 584 else if (operation == SMIME_SIGN) 585 { 586 if (!keyfile) 587 keyfile = signerfile; 588 } 589 else keyfile = NULL; 590 591 if (keyfile) 592 { 593 key = load_key(bio_err, keyfile, keyform, 0, passin, e, 594 "signing key file"); 595 if (!key) 596 goto end; 597 } 598 599 if (infile) 600 { 601 if (!(in = BIO_new_file(infile, inmode))) 602 { 603 BIO_printf (bio_err, 604 "Can't open input file %s\n", infile); 605 goto end; 606 } 607 } 608 else 609 in = BIO_new_fp(stdin, BIO_NOCLOSE); 610 611 if (outfile) 612 { 613 if (!(out = BIO_new_file(outfile, outmode))) 614 { 615 BIO_printf (bio_err, 616 "Can't open output file %s\n", outfile); 617 goto end; 618 } 619 } 620 else 621 { 622 out = BIO_new_fp(stdout, BIO_NOCLOSE); 623#ifdef OPENSSL_SYS_VMS 624 { 625 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 626 out = BIO_push(tmpbio, out); 627 } 628#endif 629 } 630 631 if (operation == SMIME_VERIFY) 632 { 633 if (!(store = setup_verify(bio_err, CAfile, CApath))) 634 goto end; 635 X509_STORE_set_verify_cb_func(store, smime_cb); 636 if (vpm) 637 X509_STORE_set1_param(store, vpm); 638 } 639 640 641 ret = 3; 642 643 if (operation == SMIME_ENCRYPT) 644 p7 = PKCS7_encrypt(encerts, in, cipher, flags); 645 else if (operation == SMIME_SIGN) 646 { 647 /* If detached data and SMIME output enable partial 648 * signing. 649 */ 650 if ((flags & PKCS7_DETACHED) && (outformat == FORMAT_SMIME)) 651 flags |= PKCS7_STREAM; 652 p7 = PKCS7_sign(signer, key, other, in, flags); 653 } 654 else 655 { 656 if (informat == FORMAT_SMIME) 657 p7 = SMIME_read_PKCS7(in, &indata); 658 else if (informat == FORMAT_PEM) 659 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL); 660 else if (informat == FORMAT_ASN1) 661 p7 = d2i_PKCS7_bio(in, NULL); 662 else 663 { 664 BIO_printf(bio_err, "Bad input format for PKCS#7 file\n"); 665 goto end; 666 } 667 668 if (!p7) 669 { 670 BIO_printf(bio_err, "Error reading S/MIME message\n"); 671 goto end; 672 } 673 if (contfile) 674 { 675 BIO_free(indata); 676 if (!(indata = BIO_new_file(contfile, "rb"))) 677 { 678 BIO_printf(bio_err, "Can't read content file %s\n", contfile); 679 goto end; 680 } 681 } 682 } 683 684 if (!p7) 685 { 686 BIO_printf(bio_err, "Error creating PKCS#7 structure\n"); 687 goto end; 688 } 689 690 ret = 4; 691 if (operation == SMIME_DECRYPT) 692 { 693 if (!PKCS7_decrypt(p7, key, recip, out, flags)) 694 { 695 BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n"); 696 goto end; 697 } 698 } 699 else if (operation == SMIME_VERIFY) 700 { 701 STACK_OF(X509) *signers; 702 if (PKCS7_verify(p7, other, store, indata, out, flags)) 703 BIO_printf(bio_err, "Verification successful\n"); 704 else 705 { 706 BIO_printf(bio_err, "Verification failure\n"); 707 goto end; 708 } 709 signers = PKCS7_get0_signers(p7, other, flags); 710 if (!save_certs(signerfile, signers)) 711 { 712 BIO_printf(bio_err, "Error writing signers to %s\n", 713 signerfile); 714 ret = 5; 715 goto end; 716 } 717 sk_X509_free(signers); 718 } 719 else if (operation == SMIME_PK7OUT) 720 PEM_write_bio_PKCS7(out, p7); 721 else 722 { 723 if (to) 724 BIO_printf(out, "To: %s\n", to); 725 if (from) 726 BIO_printf(out, "From: %s\n", from); 727 if (subject) 728 BIO_printf(out, "Subject: %s\n", subject); 729 if (outformat == FORMAT_SMIME) 730 SMIME_write_PKCS7(out, p7, in, flags); 731 else if (outformat == FORMAT_PEM) 732 PEM_write_bio_PKCS7(out,p7); 733 else if (outformat == FORMAT_ASN1) 734 i2d_PKCS7_bio(out,p7); 735 else 736 { 737 BIO_printf(bio_err, "Bad output format for PKCS#7 file\n"); 738 goto end; 739 } 740 } 741 ret = 0; 742end: 743 if (need_rand) 744 app_RAND_write_file(NULL, bio_err); 745 if (ret) ERR_print_errors(bio_err); 746 sk_X509_pop_free(encerts, X509_free); 747 sk_X509_pop_free(other, X509_free); 748 if (vpm) 749 X509_VERIFY_PARAM_free(vpm); 750 X509_STORE_free(store); 751 X509_free(cert); 752 X509_free(recip); 753 X509_free(signer); 754 EVP_PKEY_free(key); 755 PKCS7_free(p7); 756 BIO_free(in); 757 BIO_free(indata); 758 BIO_free_all(out); 759 if (passin) OPENSSL_free(passin); 760 return (ret); 761} 762 763static int save_certs(char *signerfile, STACK_OF(X509) *signers) 764 { 765 int i; 766 BIO *tmp; 767 if (!signerfile) 768 return 1; 769 tmp = BIO_new_file(signerfile, "w"); 770 if (!tmp) return 0; 771 for(i = 0; i < sk_X509_num(signers); i++) 772 PEM_write_bio_X509(tmp, sk_X509_value(signers, i)); 773 BIO_free(tmp); 774 return 1; 775 } 776 777 778/* Minimal callback just to output policy info (if any) */ 779 780static int smime_cb(int ok, X509_STORE_CTX *ctx) 781 { 782 int error; 783 784 error = X509_STORE_CTX_get_error(ctx); 785 786 if ((error != X509_V_ERR_NO_EXPLICIT_POLICY) 787 && ((error != X509_V_OK) || (ok != 2))) 788 return ok; 789 790 policies_print(NULL, ctx); 791 792 return ok; 793 794 } 795