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 int save_certs(char *signerfile, STACK_OF(X509) *signers);
  71
  72 #define SMIME_OP        0x10
  73 #define SMIME_ENCRYPT   (1 | SMIME_OP)
  74 #define SMIME_DECRYPT   2
  75 #define SMIME_SIGN      (3 | SMIME_OP)
  76 #define SMIME_VERIFY    4
  77 #define SMIME_PK7OUT    5
  78
  79 int MAIN(int, char **);
  80
  81 int MAIN(int argc, char **argv)
  82 {
  83         ENGINE *e = NULL;
  84         int operation = 0;
  85         int ret = 0;
  86         char **args;
  87         char *inmode = "r", *outmode = "w";
  88         char *infile = NULL, *outfile = NULL;
  89         char *signerfile = NULL, *recipfile = NULL;
  90         char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
  91         const EVP_CIPHER *cipher = NULL;
  92         PKCS7 *p7 = NULL;
  93         X509_STORE *store = NULL;
  94         X509 *cert = NULL, *recip = NULL, *signer = NULL;
  95         EVP_PKEY *key = NULL;
  96         STACK_OF(X509) *encerts = NULL, *other = NULL;
  97         BIO *in = NULL, *out = NULL, *indata = NULL;
  98         int badarg = 0;
  99         int flags = PKCS7_DETACHED, store_flags = 0;
 100         char *to = NULL, *from = NULL, *subject = NULL;
 101         char *CAfile = NULL, *CApath = NULL;
 102         char *passargin = NULL, *passin = NULL;
 103         char *inrand = NULL;
 104         int need_rand = 0;
 105         int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
 106         int keyform = FORMAT_PEM;
 107         char *engine=NULL;
 108
 109         args = argv + 1;
 110         ret = 1;
 111
 112         apps_startup();
 113
 114         if (bio_err == NULL)
 115                 if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 116                         BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
 117
 118         if (!load_config(bio_err, NULL))
 119                 goto end;
 120
 121         while (!badarg && *args && *args[0] == '-') {
 122                 if (!strcmp (*args, "-encrypt")) operation = SMIME_ENCRYPT;
 123                 else if (!strcmp (*args, "-decrypt")) operation = SMIME_DECRYPT;
 124                 else if (!strcmp (*args, "-sign")) operation = SMIME_SIGN;
 125                 else if (!strcmp (*args, "-verify")) operation = SMIME_VERIFY;
 126                 else if (!strcmp (*args, "-pk7out")) operation = SMIME_PK7OUT;
 127 #ifndef OPENSSL_NO_DES
 128                 else if (!strcmp (*args, "-des3"))
 129                                 cipher = EVP_des_ede3_cbc();
 130                 else if (!strcmp (*args, "-des"))
 131                                 cipher = EVP_des_cbc();
 132 #endif
 133 #ifndef OPENSSL_NO_RC2
 134                 else if (!strcmp (*args, "-rc2-40"))
 135                                 cipher = EVP_rc2_40_cbc();
 136                 else if (!strcmp (*args, "-rc2-128"))
 137                                 cipher = EVP_rc2_cbc();
 138                 else if (!strcmp (*args, "-rc2-64"))
 139                                 cipher = EVP_rc2_64_cbc();
 140 #endif
 141 #ifndef OPENSSL_NO_AES
 142                 else if (!strcmp(*args,"-aes128"))
 143                                 cipher = EVP_aes_128_cbc();
 144                 else if (!strcmp(*args,"-aes192"))
 145                                 cipher = EVP_aes_192_cbc();
 146                 else if (!strcmp(*args,"-aes256"))
 147                                 cipher = EVP_aes_256_cbc();
 148 #endif
 149                 else if (!strcmp (*args, "-text"))
 150                                 flags |= PKCS7_TEXT;
 151                 else if (!strcmp (*args, "-nointern"))
 152                                 flags |= PKCS7_NOINTERN;
 153                 else if (!strcmp (*args, "-noverify"))
 154                                 flags |= PKCS7_NOVERIFY;
 155                 else if (!strcmp (*args, "-nochain"))
 156                                 flags |= PKCS7_NOCHAIN;
 157                 else if (!strcmp (*args, "-nocerts"))
 158                                 flags |= PKCS7_NOCERTS;
 159                 else if (!strcmp (*args, "-noattr"))
 160                                 flags |= PKCS7_NOATTR;
 161                 else if (!strcmp (*args, "-nodetach"))
 162                                 flags &= ~PKCS7_DETACHED;
 163                 else if (!strcmp (*args, "-nosmimecap"))
 164                                 flags |= PKCS7_NOSMIMECAP;
 165                 else if (!strcmp (*args, "-binary"))
 166                                 flags |= PKCS7_BINARY;
 167                 else if (!strcmp (*args, "-nosigs"))
 168                                 flags |= PKCS7_NOSIGS;
 169                 else if (!strcmp (*args, "-crl_check"))
 170                                 store_flags |= X509_V_FLAG_CRL_CHECK;
 171                 else if (!strcmp (*args, "-crl_check_all"))
 172                                 store_flags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
 173                 else if (!strcmp(*args,"-rand")) {
 174                         if (args[1]) {
 175                                 args++;
 176                                 inrand = *args;
 177                         } else badarg = 1;
 178                         need_rand = 1;
 179                 } else if (!strcmp(*args,"-engine")) {
 180                         if (args[1]) {
 181                                 args++;
 182                                 engine = *args;
 183                         } else badarg = 1;
 184                 } else if (!strcmp(*args,"-passin")) {
 185                         if (args[1]) {
 186                                 args++;
 187                                 passargin = *args;
 188                         } else badarg = 1;
 189                 } else if (!strcmp (*args, "-to")) {
 190                         if (args[1]) {
 191                                 args++;
 192                                 to = *args;
 193                         } else badarg = 1;
 194                 } else if (!strcmp (*args, "-from")) {
 195                         if (args[1]) {
 196                                 args++;
 197                                 from = *args;
 198                         } else badarg = 1;
 199                 } else if (!strcmp (*args, "-subject")) {
 200                         if (args[1]) {
 201                                 args++;
 202                                 subject = *args;
 203                         } else badarg = 1;
 204                 } else if (!strcmp (*args, "-signer")) {
 205                         if (args[1]) {
 206                                 args++;
 207                                 signerfile = *args;
 208                         } else badarg = 1;
 209                 } else if (!strcmp (*args, "-recip")) {
 210                         if (args[1]) {
 211                                 args++;
 212                                 recipfile = *args;
 213                         } else badarg = 1;
 214                 } else if (!strcmp (*args, "-inkey")) {
 215                         if (args[1]) {
 216                                 args++;
 217                                 keyfile = *args;
 218                         } else badarg = 1;
 219                 } else if (!strcmp (*args, "-keyform")) {
 220                         if (args[1]) {
 221                                 args++;
 222                                 keyform = str2fmt(*args);
 223                         } else badarg = 1;
 224                 } else if (!strcmp (*args, "-certfile")) {
 225                         if (args[1]) {
 226                                 args++;
 227                                 certfile = *args;
 228                         } else badarg = 1;
 229                 } else if (!strcmp (*args, "-CAfile")) {
 230                         if (args[1]) {
 231                                 args++;
 232                                 CAfile = *args;
 233                         } else badarg = 1;
 234                 } else if (!strcmp (*args, "-CApath")) {
 235                         if (args[1]) {
 236                                 args++;
 237                                 CApath = *args;
 238                         } else badarg = 1;
 239                 } else if (!strcmp (*args, "-in")) {
 240                         if (args[1]) {
 241                                 args++;
 242                                 infile = *args;
 243                         } else badarg = 1;
 244                 } else if (!strcmp (*args, "-inform")) {
 245                         if (args[1]) {
 246                                 args++;
 247                                 informat = str2fmt(*args);
 248                         } else badarg = 1;
 249                 } else if (!strcmp (*args, "-outform")) {
 250                         if (args[1]) {
 251                                 args++;
 252                                 outformat = str2fmt(*args);
 253                         } else badarg = 1;
 254                 } else if (!strcmp (*args, "-out")) {
 255                         if (args[1]) {
 256                                 args++;
 257                                 outfile = *args;
 258                         } else badarg = 1;
 259                 } else if (!strcmp (*args, "-content")) {
 260                         if (args[1]) {
 261                                 args++;
 262                                 contfile = *args;
 263                         } else badarg = 1;
 264                 } else badarg = 1;
 265                 args++;
 266         }
 267
 268         if(operation == SMIME_SIGN) {
 269                 if(!signerfile) {
 270                         BIO_printf(bio_err, "No signer certificate specified\n");
 271                         badarg = 1;
 272                 }
 273                 need_rand = 1;
 274         } else if(operation == SMIME_DECRYPT) {
 275                 if(!recipfile) {
 276                         BIO_printf(bio_err, "No recipient certificate and key specified\n");
 277                         badarg = 1;
 278                 }
 279         } else if(operation == SMIME_ENCRYPT) {
 280                 if(!*args) {
 281                         BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
 282                         badarg = 1;
 283                 }
 284                 need_rand = 1;
 285         } else if(!operation) badarg = 1;
 286
 287         if (badarg) {
 288                 BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
 289                 BIO_printf (bio_err, "where options are\n");
 290                 BIO_printf (bio_err, "-encrypt       encrypt message\n");
 291                 BIO_printf (bio_err, "-decrypt       decrypt encrypted message\n");
 292                 BIO_printf (bio_err, "-sign          sign message\n");
 293                 BIO_printf (bio_err, "-verify        verify signed message\n");
 294                 BIO_printf (bio_err, "-pk7out        output PKCS#7 structure\n");
 295 #ifndef OPENSSL_NO_DES
 296                 BIO_printf (bio_err, "-des3          encrypt with triple DES\n");
 297                 BIO_printf (bio_err, "-des           encrypt with DES\n");
 298 #endif
 299 #ifndef OPENSSL_NO_RC2
 300                 BIO_printf (bio_err, "-rc2-40        encrypt with RC2-40 (default)\n");
 301                 BIO_printf (bio_err, "-rc2-64        encrypt with RC2-64\n");
 302                 BIO_printf (bio_err, "-rc2-128       encrypt with RC2-128\n");
 303 #endif
 304 #ifndef OPENSSL_NO_AES
 305                 BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");
 306                 BIO_printf (bio_err, "               encrypt PEM output with cbc aes\n");
 307 #endif
 308                 BIO_printf (bio_err, "-nointern      don't search certificates in message for signer\n");
 309                 BIO_printf (bio_err, "-nosigs        don't verify message signature\n");
 310                 BIO_printf (bio_err, "-noverify      don't verify signers certificate\n");
 311                 BIO_printf (bio_err, "-nocerts       don't include signers certificate when signing\n");
 312                 BIO_printf (bio_err, "-nodetach      use opaque signing\n");
 313                 BIO_printf (bio_err, "-noattr        don't include any signed attributes\n");
 314                 BIO_printf (bio_err, "-binary        don't translate message to text\n");
 315                 BIO_printf (bio_err, "-certfile file other certificates file\n");
 316                 BIO_printf (bio_err, "-signer file   signer certificate file\n");
 317                 BIO_printf (bio_err, "-recip  file   recipient certificate file for decryption\n");
 318                 BIO_printf (bio_err, "-in file       input file\n");
 319                 BIO_printf (bio_err, "-inform arg    input format SMIME (default), PEM or DER\n");
 320                 BIO_printf (bio_err, "-inkey file    input private key (if not signer or recipient)\n");
 321                 BIO_printf (bio_err, "-keyform arg   input private key format (PEM or ENGINE)\n");
 322                 BIO_printf (bio_err, "-out file      output file\n");
 323                 BIO_printf (bio_err, "-outform arg   output format SMIME (default), PEM or DER\n");
 324                 BIO_printf (bio_err, "-content file  supply or override content for detached signature\n");
 325                 BIO_printf (bio_err, "-to addr       to address\n");
 326                 BIO_printf (bio_err, "-from ad       from address\n");
 327                 BIO_printf (bio_err, "-subject s     subject\n");
 328                 BIO_printf (bio_err, "-text          include or delete text MIME headers\n");
 329                 BIO_printf (bio_err, "-CApath dir    trusted certificates directory\n");
 330                 BIO_printf (bio_err, "-CAfile file   trusted certificates file\n");
 331                 BIO_printf (bio_err, "-crl_check     check revocation status of signer's certificate using CRLs\n");
 332                 BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
 333                 BIO_printf (bio_err, "-engine e      use engine e, possibly a hardware device.\n");
 334                 BIO_printf (bio_err, "-passin arg    input file pass phrase source\n");
 335                 BIO_printf(bio_err,  "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 336                 BIO_printf(bio_err,  "               load the file (or the files in the directory) into\n");
 337                 BIO_printf(bio_err,  "               the random number generator\n");
 338                 BIO_printf (bio_err, "cert.pem       recipient certificate(s) for encryption\n");
 339                 goto end;
 340         }
 341
 342         e = setup_engine(bio_err, engine, 0);
 343
 344         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
 345                 BIO_printf(bio_err, "Error getting password\n");
 346                 goto end;
 347         }
 348
 349         if (need_rand) {
 350                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 351                 if (inrand != NULL)
 352                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 353                                 app_RAND_load_files(inrand));
 354         }
 355
 356         ret = 2;
 357
 358         if(operation != SMIME_SIGN) flags &= ~PKCS7_DETACHED;
 359
 360         if(operation & SMIME_OP) {
 361                 if(flags & PKCS7_BINARY) inmode = "rb";
 362                 if(outformat == FORMAT_ASN1) outmode = "wb";
 363         } else {
 364                 if(flags & PKCS7_BINARY) outmode = "wb";
 365                 if(informat == FORMAT_ASN1) inmode = "rb";
 366         }
 367
 368         if(operation == SMIME_ENCRYPT) {
 369                 if (!cipher) {
 370 #ifndef OPENSSL_NO_RC2
 371                         cipher = EVP_rc2_40_cbc();
 372 #else
 373                         BIO_printf(bio_err, "No cipher selected\n");
 374                         goto end;
 375 #endif
 376                 }
 377                 encerts = sk_X509_new_null();
 378                 while (*args) {
 379                         if(!(cert = load_cert(bio_err,*args,FORMAT_PEM,
 380                                 NULL, e, "recipient certificate file"))) {
 381 #if 0                           /* An appropriate message is already printed */
 382                                 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
 383 #endif
 384                                 goto end;
 385                         }
 386                         sk_X509_push(encerts, cert);
 387                         cert = NULL;
 388                         args++;
 389                 }
 390         }
 391
 392         if(signerfile && (operation == SMIME_SIGN)) {
 393                 if(!(signer = load_cert(bio_err,signerfile,FORMAT_PEM, NULL,
 394                         e, "signer certificate"))) {
 395 #if 0                   /* An appropri message has already been printed */
 396                         BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
 397 #endif
 398                         goto end;
 399                 }
 400         }
 401
 402         if(certfile) {
 403                 if(!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
 404                         e, "certificate file"))) {
 405 #if 0                   /* An appropriate message has already been printed */
 406                         BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
 407 #endif
 408                         ERR_print_errors(bio_err);
 409                         goto end;
 410                 }
 411         }
 412
 413         if(recipfile && (operation == SMIME_DECRYPT)) {
 414                 if(!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
 415                         e, "recipient certificate file"))) {
 416 #if 0                   /* An appropriate message has alrady been printed */
 417                         BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
 418 #endif
 419                         ERR_print_errors(bio_err);
 420                         goto end;
 421                 }
 422         }
 423
 424         if(operation == SMIME_DECRYPT) {
 425                 if(!keyfile) keyfile = recipfile;
 426         } else if(operation == SMIME_SIGN) {
 427                 if(!keyfile) keyfile = signerfile;
 428         } else keyfile = NULL;
 429
 430         if(keyfile) {
 431                 key = load_key(bio_err, keyfile, keyform, 0, passin, e,
 432                                "signing key file");
 433                 if (!key) {
 434                         goto end;
 435                 }
 436         }
 437
 438         if (infile) {
 439                 if (!(in = BIO_new_file(infile, inmode))) {
 440                         BIO_printf (bio_err,
 441                                  "Can't open input file %s\n", infile);
 442                         goto end;
 443                 }
 444         } else in = BIO_new_fp(stdin, BIO_NOCLOSE);
 445
 446         if (outfile) {
 447                 if (!(out = BIO_new_file(outfile, outmode))) {
 448                         BIO_printf (bio_err,
 449                                  "Can't open output file %s\n", outfile);
 450                         goto end;
 451                 }
 452         } else {
 453                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 454 #ifdef OPENSSL_SYS_VMS
 455                 {
 456                     BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 457                     out = BIO_push(tmpbio, out);
 458                 }
 459 #endif
 460         }
 461
 462         if(operation == SMIME_VERIFY) {
 463                 if(!(store = setup_verify(bio_err, CAfile, CApath))) goto end;
 464                 X509_STORE_set_flags(store, store_flags);
 465         }
 466
 467
 468         ret = 3;
 469
 470         if(operation == SMIME_ENCRYPT) {
 471                 p7 = PKCS7_encrypt(encerts, in, cipher, flags);
 472         } else if(operation == SMIME_SIGN) {
 473                 p7 = PKCS7_sign(signer, key, other, in, flags);
 474                 if (BIO_reset(in) != 0 && (flags & PKCS7_DETACHED)) {
 475                   BIO_printf(bio_err, "Can't rewind input file\n");
 476                   goto end;
 477                 }
 478         } else {
 479                 if(informat == FORMAT_SMIME)
 480                         p7 = SMIME_read_PKCS7(in, &indata);
 481                 else if(informat == FORMAT_PEM)
 482                         p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
 483                 else if(informat == FORMAT_ASN1)
 484                         p7 = d2i_PKCS7_bio(in, NULL);
 485                 else {
 486                         BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
 487                         goto end;
 488                 }
 489
 490                 if(!p7) {
 491                         BIO_printf(bio_err, "Error reading S/MIME message\n");
 492                         goto end;
 493                 }
 494                 if(contfile) {
 495                         BIO_free(indata);
 496                         if(!(indata = BIO_new_file(contfile, "rb"))) {
 497                                 BIO_printf(bio_err, "Can't read content file %s\n", contfile);
 498                                 goto end;
 499                         }
 500                 }
 501         }
 502
 503         if(!p7) {
 504                 BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
 505                 goto end;
 506         }
 507
 508         ret = 4;
 509         if(operation == SMIME_DECRYPT) {
 510                 if(!PKCS7_decrypt(p7, key, recip, out, flags)) {
 511                         BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
 512                         goto end;
 513                 }
 514         } else if(operation == SMIME_VERIFY) {
 515                 STACK_OF(X509) *signers;
 516                 if(PKCS7_verify(p7, other, store, indata, out, flags)) {
 517                         BIO_printf(bio_err, "Verification successful\n");
 518                 } else {
 519                         BIO_printf(bio_err, "Verification failure\n");
 520                         goto end;
 521                 }
 522                 signers = PKCS7_get0_signers(p7, other, flags);
 523                 if(!save_certs(signerfile, signers)) {
 524                         BIO_printf(bio_err, "Error writing signers to %s\n",
 525                                                                 signerfile);
 526                         ret = 5;
 527                         goto end;
 528                 }
 529                 sk_X509_free(signers);
 530         } else if(operation == SMIME_PK7OUT) {
 531                 PEM_write_bio_PKCS7(out, p7);
 532         } else {
 533                 if(to) BIO_printf(out, "To: %s\n", to);
 534                 if(from) BIO_printf(out, "From: %s\n", from);
 535                 if(subject) BIO_printf(out, "Subject: %s\n", subject);
 536                 if(outformat == FORMAT_SMIME)
 537                         SMIME_write_PKCS7(out, p7, in, flags);
 538                 else if(outformat == FORMAT_PEM)
 539                         PEM_write_bio_PKCS7(out,p7);
 540                 else if(outformat == FORMAT_ASN1)
 541                         i2d_PKCS7_bio(out,p7);
 542                 else {
 543                         BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
 544                         goto end;
 545                 }
 546         }
 547         ret = 0;
 548 end:
 549         if (need_rand)
 550                 app_RAND_write_file(NULL, bio_err);
 551         if(ret) ERR_print_errors(bio_err);
 552         sk_X509_pop_free(encerts, X509_free);
 553         sk_X509_pop_free(other, X509_free);
 554         X509_STORE_free(store);
 555         X509_free(cert);
 556         X509_free(recip);
 557         X509_free(signer);
 558         EVP_PKEY_free(key);
 559         PKCS7_free(p7);
 560         BIO_free(in);
 561         BIO_free(indata);
 562         BIO_free_all(out);
 563         if(passin) OPENSSL_free(passin);
 564         return (ret);
 565 }
 566
 567 static int save_certs(char *signerfile, STACK_OF(X509) *signers)
 568 {
 569         int i;
 570         BIO *tmp;
 571         if(!signerfile) return 1;
 572         tmp = BIO_new_file(signerfile, "w");
 573         if(!tmp) return 0;
 574         for(i = 0; i < sk_X509_num(signers); i++)
 575                 PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
 576         BIO_free(tmp);
 577         return 1;
 578 }
 579