apps/cms.c

   1 /* apps/cms.c */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2008 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
  54 /* CMS utility function */
  55
  56 #include <stdio.h>
  57 #include <string.h>
  58 #include "apps.h"
  59
  60 #ifndef OPENSSL_NO_CMS
  61
  62 #include <openssl/crypto.h>
  63 #include <openssl/pem.h>
  64 #include <openssl/err.h>
  65 #include <openssl/x509_vfy.h>
  66 #include <openssl/x509v3.h>
  67 #include <openssl/cms.h>
  68
  69 #undef PROG
  70 #define PROG cms_main
  71 static int save_certs(char *signerfile, STACK_OF(X509) *signers);
  72 static int smime_cb(int ok, X509_STORE_CTX *ctx);
  73
  74 #define SMIME_OP        0x10
  75 #define SMIME_IP        0x20
  76 #define SMIME_SIGNERS   0x40
  77 #define SMIME_ENCRYPT           (1 | SMIME_OP)
  78 #define SMIME_DECRYPT           (2 | SMIME_IP)
  79 #define SMIME_SIGN              (3 | SMIME_OP | SMIME_SIGNERS)
  80 #define SMIME_VERIFY            (4 | SMIME_IP)
  81 #define SMIME_CMSOUT            (5 | SMIME_IP | SMIME_OP)
  82 #define SMIME_RESIGN            (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
  83 #define SMIME_DATAOUT           (7 | SMIME_IP)
  84 #define SMIME_DATA_CREATE       (8 | SMIME_OP)
  85 #define SMIME_DIGEST_VERIFY     (9 | SMIME_IP)
  86 #define SMIME_DIGEST_CREATE     (10 | SMIME_OP)
  87 #define SMIME_UNCOMPRESS        (11 | SMIME_IP)
  88 #define SMIME_COMPRESS          (12 | SMIME_OP)
  89 #define SMIME_ENCRYPTED_DECRYPT (13 | SMIME_IP)
  90 #define SMIME_ENCRYPTED_ENCRYPT (14 | SMIME_OP)
  91
  92 int MAIN(int, char **);
  93
  94 int MAIN(int argc, char **argv)
  95         {
  96         ENGINE *e = NULL;
  97         int operation = 0;
  98         int ret = 0;
  99         char **args;
 100         const char *inmode = "r", *outmode = "w";
 101         char *infile = NULL, *outfile = NULL;
 102         char *signerfile = NULL, *recipfile = NULL;
 103         STACK *sksigners = NULL, *skkeys = NULL;
 104         char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
 105         const EVP_CIPHER *cipher = NULL;
 106         CMS_ContentInfo *cms = NULL;
 107         X509_STORE *store = NULL;
 108         X509 *cert = NULL, *recip = NULL, *signer = NULL;
 109         EVP_PKEY *key = NULL;
 110         STACK_OF(X509) *encerts = NULL, *other = NULL;
 111         BIO *in = NULL, *out = NULL, *indata = NULL;
 112         int badarg = 0;
 113         int flags = CMS_DETACHED, noout = 0, print = 0;
 114         char *to = NULL, *from = NULL, *subject = NULL;
 115         char *CAfile = NULL, *CApath = NULL;
 116         char *passargin = NULL, *passin = NULL;
 117         char *inrand = NULL;
 118         int need_rand = 0;
 119         const EVP_MD *sign_md = NULL;
 120         int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
 121         int keyform = FORMAT_PEM;
 122 #ifndef OPENSSL_NO_ENGINE
 123         char *engine=NULL;
 124 #endif
 125         unsigned char *secret_key = NULL, *secret_keyid = NULL;
 126         size_t secret_keylen = 0, secret_keyidlen = 0;
 127
 128         ASN1_OBJECT *econtent_type = NULL;
 129
 130         X509_VERIFY_PARAM *vpm = NULL;
 131
 132         args = argv + 1;
 133         ret = 1;
 134
 135         apps_startup();
 136
 137         if (bio_err == NULL)
 138                 {
 139                 if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 140                         BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
 141                 }
 142
 143         if (!load_config(bio_err, NULL))
 144                 goto end;
 145
 146         while (!badarg && *args && *args[0] == '-')
 147                 {
 148                 if (!strcmp (*args, "-encrypt"))
 149                         operation = SMIME_ENCRYPT;
 150                 else if (!strcmp (*args, "-decrypt"))
 151                         operation = SMIME_DECRYPT;
 152                 else if (!strcmp (*args, "-sign"))
 153                         operation = SMIME_SIGN;
 154                 else if (!strcmp (*args, "-resign"))
 155                         operation = SMIME_RESIGN;
 156                 else if (!strcmp (*args, "-verify"))
 157                         operation = SMIME_VERIFY;
 158                 else if (!strcmp (*args, "-cmsout"))
 159                         operation = SMIME_CMSOUT;
 160                 else if (!strcmp (*args, "-data_out"))
 161                         operation = SMIME_DATAOUT;
 162                 else if (!strcmp (*args, "-data_create"))
 163                         operation = SMIME_DATA_CREATE;
 164                 else if (!strcmp (*args, "-digest_verify"))
 165                         operation = SMIME_DIGEST_VERIFY;
 166                 else if (!strcmp (*args, "-digest_create"))
 167                         operation = SMIME_DIGEST_CREATE;
 168                 else if (!strcmp (*args, "-compress"))
 169                         operation = SMIME_COMPRESS;
 170                 else if (!strcmp (*args, "-uncompress"))
 171                         operation = SMIME_UNCOMPRESS;
 172                 else if (!strcmp (*args, "-EncryptedData_decrypt"))
 173                         operation = SMIME_ENCRYPTED_DECRYPT;
 174                 else if (!strcmp (*args, "-EncryptedData_encrypt"))
 175                         operation = SMIME_ENCRYPTED_ENCRYPT;
 176 #ifndef OPENSSL_NO_DES
 177                 else if (!strcmp (*args, "-des3"))
 178                                 cipher = EVP_des_ede3_cbc();
 179                 else if (!strcmp (*args, "-des"))
 180                                 cipher = EVP_des_cbc();
 181 #endif
 182 #ifndef OPENSSL_NO_SEED
 183                 else if (!strcmp (*args, "-seed"))
 184                                 cipher = EVP_seed_cbc();
 185 #endif
 186 #ifndef OPENSSL_NO_RC2
 187                 else if (!strcmp (*args, "-rc2-40"))
 188                                 cipher = EVP_rc2_40_cbc();
 189                 else if (!strcmp (*args, "-rc2-128"))
 190                                 cipher = EVP_rc2_cbc();
 191                 else if (!strcmp (*args, "-rc2-64"))
 192                                 cipher = EVP_rc2_64_cbc();
 193 #endif
 194 #ifndef OPENSSL_NO_AES
 195                 else if (!strcmp(*args,"-aes128"))
 196                                 cipher = EVP_aes_128_cbc();
 197                 else if (!strcmp(*args,"-aes192"))
 198                                 cipher = EVP_aes_192_cbc();
 199                 else if (!strcmp(*args,"-aes256"))
 200                                 cipher = EVP_aes_256_cbc();
 201 #endif
 202 #ifndef OPENSSL_NO_CAMELLIA
 203                 else if (!strcmp(*args,"-camellia128"))
 204                                 cipher = EVP_camellia_128_cbc();
 205                 else if (!strcmp(*args,"-camellia192"))
 206                                 cipher = EVP_camellia_192_cbc();
 207                 else if (!strcmp(*args,"-camellia256"))
 208                                 cipher = EVP_camellia_256_cbc();
 209 #endif
 210                 else if (!strcmp (*args, "-text"))
 211                                 flags |= CMS_TEXT;
 212                 else if (!strcmp (*args, "-nointern"))
 213                                 flags |= CMS_NOINTERN;
 214                 else if (!strcmp (*args, "-noverify")
 215                         || !strcmp (*args, "-no_signer_cert_verify"))
 216                                 flags |= CMS_NO_SIGNER_CERT_VERIFY;
 217                 else if (!strcmp (*args, "-nocerts"))
 218                                 flags |= CMS_NOCERTS;
 219                 else if (!strcmp (*args, "-noattr"))
 220                                 flags |= CMS_NOATTR;
 221                 else if (!strcmp (*args, "-nodetach"))
 222                                 flags &= ~CMS_DETACHED;
 223                 else if (!strcmp (*args, "-nosmimecap"))
 224                                 flags |= CMS_NOSMIMECAP;
 225                 else if (!strcmp (*args, "-binary"))
 226                                 flags |= CMS_BINARY;
 227                 else if (!strcmp (*args, "-keyid"))
 228                                 flags |= CMS_USE_KEYID;
 229                 else if (!strcmp (*args, "-nosigs"))
 230                                 flags |= CMS_NOSIGS;
 231                 else if (!strcmp (*args, "-no_content_verify"))
 232                                 flags |= CMS_NO_CONTENT_VERIFY;
 233                 else if (!strcmp (*args, "-no_attr_verify"))
 234                                 flags |= CMS_NO_ATTR_VERIFY;
 235                 else if (!strcmp (*args, "-stream"))
 236                                 flags |= CMS_STREAM;
 237                 else if (!strcmp (*args, "-indef"))
 238                                 flags |= CMS_STREAM;
 239                 else if (!strcmp (*args, "-noindef"))
 240                                 flags &= ~CMS_STREAM;
 241                 else if (!strcmp (*args, "-nooldmime"))
 242                                 flags |= CMS_NOOLDMIMETYPE;
 243                 else if (!strcmp (*args, "-crlfeol"))
 244                                 flags |= CMS_CRLFEOL;
 245                 else if (!strcmp (*args, "-noout"))
 246                                 noout = 1;
 247                 else if (!strcmp (*args, "-print"))
 248                                 {
 249                                 noout = 1;
 250                                 print = 1;
 251                                 }
 252                 else if (!strcmp(*args,"-secretkey"))
 253                         {
 254                         long ltmp;
 255                         if (!args[1])
 256                                 goto argerr;
 257                         args++;
 258                         secret_key = string_to_hex(*args, &ltmp);
 259                         if (!secret_key)
 260                                 {
 261                                 BIO_printf(bio_err, "Invalid key %s\n", *args);
 262                                 goto argerr;
 263                                 }
 264                         secret_keylen = (size_t)ltmp;
 265                         }
 266                 else if (!strcmp(*args,"-secretkeyid"))
 267                         {
 268                         long ltmp;
 269                         if (!args[1])
 270                                 goto argerr;
 271                         args++;
 272                         secret_keyid = string_to_hex(*args, &ltmp);
 273                         if (!secret_keyid)
 274                                 {
 275                                 BIO_printf(bio_err, "Invalid id %s\n", *args);
 276                                 goto argerr;
 277                                 }
 278                         secret_keyidlen = (size_t)ltmp;
 279                         }
 280                 else if (!strcmp(*args,"-econtent_type"))
 281                         {
 282                         if (!args[1])
 283                                 goto argerr;
 284                         args++;
 285                         econtent_type = OBJ_txt2obj(*args, 0);
 286                         if (!econtent_type)
 287                                 {
 288                                 BIO_printf(bio_err, "Invalid OID %s\n", *args);
 289                                 goto argerr;
 290                                 }
 291                         }
 292                 else if (!strcmp(*args,"-rand"))
 293                         {
 294                         if (!args[1])
 295                                 goto argerr;
 296                         args++;
 297                         inrand = *args;
 298                         need_rand = 1;
 299                         }
 300 #ifndef OPENSSL_NO_ENGINE
 301                 else if (!strcmp(*args,"-engine"))
 302                         {
 303                         if (!args[1])
 304                                 goto argerr;
 305                         engine = *++args;
 306                         }
 307 #endif
 308                 else if (!strcmp(*args,"-passin"))
 309                         {
 310                         if (!args[1])
 311                                 goto argerr;
 312                         passargin = *++args;
 313                         }
 314                 else if (!strcmp (*args, "-to"))
 315                         {
 316                         if (!args[1])
 317                                 goto argerr;
 318                         to = *++args;
 319                         }
 320                 else if (!strcmp (*args, "-from"))
 321                         {
 322                         if (!args[1])
 323                                 goto argerr;
 324                         from = *++args;
 325                         }
 326                 else if (!strcmp (*args, "-subject"))
 327                         {
 328                         if (!args[1])
 329                                 goto argerr;
 330                         subject = *++args;
 331                         }
 332                 else if (!strcmp (*args, "-signer"))
 333                         {
 334                         if (!args[1])
 335                                 goto argerr;
 336                         /* If previous -signer argument add signer to list */
 337
 338                         if (signerfile)
 339                                 {
 340                                 if (!sksigners)
 341                                         sksigners = sk_new_null();
 342                                 sk_push(sksigners, signerfile);
 343                                 if (!keyfile)
 344                                         keyfile = signerfile;
 345                                 if (!skkeys)
 346                                         skkeys = sk_new_null();
 347                                 sk_push(skkeys, keyfile);
 348                                 keyfile = NULL;
 349                                 }
 350                         signerfile = *++args;
 351                         }
 352                 else if (!strcmp (*args, "-recip"))
 353                         {
 354                         if (!args[1])
 355                                 goto argerr;
 356                         recipfile = *++args;
 357                         }
 358                 else if (!strcmp (*args, "-md"))
 359                         {
 360                         if (!args[1])
 361                                 goto argerr;
 362                         sign_md = EVP_get_digestbyname(*++args);
 363                         if (sign_md == NULL)
 364                                 {
 365                                 BIO_printf(bio_err, "Unknown digest %s\n",
 366                                                         *args);
 367                                 goto argerr;
 368                                 }
 369                         }
 370                 else if (!strcmp (*args, "-inkey"))
 371                         {
 372                         if (!args[1])
 373                                 goto argerr;
 374                         /* If previous -inkey arument add signer to list */
 375                         if (keyfile)
 376                                 {
 377                                 if (!signerfile)
 378                                         {
 379                                         BIO_puts(bio_err, "Illegal -inkey without -signer\n");
 380                                         goto argerr;
 381                                         }
 382                                 if (!sksigners)
 383                                         sksigners = sk_new_null();
 384                                 sk_push(sksigners, signerfile);
 385                                 signerfile = NULL;
 386                                 if (!skkeys)
 387                                         skkeys = sk_new_null();
 388                                 sk_push(skkeys, keyfile);
 389                                 }
 390                         keyfile = *++args;
 391                         }
 392                 else if (!strcmp (*args, "-keyform"))
 393                         {
 394                         if (!args[1])
 395                                 goto argerr;
 396                         keyform = str2fmt(*++args);
 397                         }
 398                 else if (!strcmp (*args, "-certfile"))
 399                         {
 400                         if (!args[1])
 401                                 goto argerr;
 402                         certfile = *++args;
 403                         }
 404                 else if (!strcmp (*args, "-CAfile"))
 405                         {
 406                         if (!args[1])
 407                                 goto argerr;
 408                         CAfile = *++args;
 409                         }
 410                 else if (!strcmp (*args, "-CApath"))
 411                         {
 412                         if (!args[1])
 413                                 goto argerr;
 414                         CApath = *++args;
 415                         }
 416                 else if (!strcmp (*args, "-in"))
 417                         {
 418                         if (!args[1])
 419                                 goto argerr;
 420                         infile = *++args;
 421                         }
 422                 else if (!strcmp (*args, "-inform"))
 423                         {
 424                         if (!args[1])
 425                                 goto argerr;
 426                         informat = str2fmt(*++args);
 427                         }
 428                 else if (!strcmp (*args, "-outform"))
 429                         {
 430                         if (!args[1])
 431                                 goto argerr;
 432                         outformat = str2fmt(*++args);
 433                         }
 434                 else if (!strcmp (*args, "-out"))
 435                         {
 436                         if (!args[1])
 437                                 goto argerr;
 438                         outfile = *++args;
 439                         }
 440                 else if (!strcmp (*args, "-content"))
 441                         {
 442                         if (!args[1])
 443                                 goto argerr;
 444                         contfile = *++args;
 445                         }
 446                 else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
 447                         continue;
 448                 else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL)
 449                         badarg = 1;
 450                 args++;
 451                 }
 452
 453         if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners))
 454                 {
 455                 BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
 456                 goto argerr;
 457                 }
 458
 459         if (operation & SMIME_SIGNERS)
 460                 {
 461                 /* Check to see if any final signer needs to be appended */
 462                 if (keyfile && !signerfile)
 463                         {
 464                         BIO_puts(bio_err, "Illegal -inkey without -signer\n");
 465                         goto argerr;
 466                         }
 467                 if (signerfile)
 468                         {
 469                         if (!sksigners)
 470                                 sksigners = sk_new_null();
 471                         sk_push(sksigners, signerfile);
 472                         if (!skkeys)
 473                                 skkeys = sk_new_null();
 474                         if (!keyfile)
 475                                 keyfile = signerfile;
 476                         sk_push(skkeys, keyfile);
 477                         }
 478                 if (!sksigners)
 479                         {
 480                         BIO_printf(bio_err, "No signer certificate specified\n");
 481                         badarg = 1;
 482                         }
 483                 signerfile = NULL;
 484                 keyfile = NULL;
 485                 need_rand = 1;
 486                 }
 487         else if (operation == SMIME_DECRYPT)
 488                 {
 489                 if (!recipfile && !keyfile && !secret_key)
 490                         {
 491                         BIO_printf(bio_err, "No recipient certificate or key specified\n");
 492                         badarg = 1;
 493                         }
 494                 }
 495         else if (operation == SMIME_ENCRYPT)
 496                 {
 497                 if (!*args && !secret_key)
 498                         {
 499                         BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
 500                         badarg = 1;
 501                         }
 502                 need_rand = 1;
 503                 }
 504         else if (!operation)
 505                 badarg = 1;
 506
 507         if (badarg)
 508                 {
 509                 argerr:
 510                 BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
 511                 BIO_printf (bio_err, "where options are\n");
 512                 BIO_printf (bio_err, "-encrypt       encrypt message\n");
 513                 BIO_printf (bio_err, "-decrypt       decrypt encrypted message\n");
 514                 BIO_printf (bio_err, "-sign          sign message\n");
 515                 BIO_printf (bio_err, "-verify        verify signed message\n");
 516                 BIO_printf (bio_err, "-cmsout        output CMS structure\n");
 517 #ifndef OPENSSL_NO_DES
 518                 BIO_printf (bio_err, "-des3          encrypt with triple DES\n");
 519                 BIO_printf (bio_err, "-des           encrypt with DES\n");
 520 #endif
 521 #ifndef OPENSSL_NO_SEED
 522                 BIO_printf (bio_err, "-seed          encrypt with SEED\n");
 523 #endif
 524 #ifndef OPENSSL_NO_RC2
 525                 BIO_printf (bio_err, "-rc2-40        encrypt with RC2-40 (default)\n");
 526                 BIO_printf (bio_err, "-rc2-64        encrypt with RC2-64\n");
 527                 BIO_printf (bio_err, "-rc2-128       encrypt with RC2-128\n");
 528 #endif
 529 #ifndef OPENSSL_NO_AES
 530                 BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");
 531                 BIO_printf (bio_err, "               encrypt PEM output with cbc aes\n");
 532 #endif
 533 #ifndef OPENSSL_NO_CAMELLIA
 534                 BIO_printf (bio_err, "-camellia128, -camellia192, -camellia256\n");
 535                 BIO_printf (bio_err, "               encrypt PEM output with cbc camellia\n");
 536 #endif
 537                 BIO_printf (bio_err, "-nointern      don't search certificates in message for signer\n");
 538                 BIO_printf (bio_err, "-nosigs        don't verify message signature\n");
 539                 BIO_printf (bio_err, "-noverify      don't verify signers certificate\n");
 540                 BIO_printf (bio_err, "-nocerts       don't include signers certificate when signing\n");
 541                 BIO_printf (bio_err, "-nodetach      use opaque signing\n");
 542                 BIO_printf (bio_err, "-noattr        don't include any signed attributes\n");
 543                 BIO_printf (bio_err, "-binary        don't translate message to text\n");
 544                 BIO_printf (bio_err, "-certfile file other certificates file\n");
 545                 BIO_printf (bio_err, "-signer file   signer certificate file\n");
 546                 BIO_printf (bio_err, "-recip  file   recipient certificate file for decryption\n");
 547                 BIO_printf (bio_err, "-skeyid        use subject key identifier\n");
 548                 BIO_printf (bio_err, "-in file       input file\n");
 549                 BIO_printf (bio_err, "-inform arg    input format SMIME (default), PEM or DER\n");
 550                 BIO_printf (bio_err, "-inkey file    input private key (if not signer or recipient)\n");
 551                 BIO_printf (bio_err, "-keyform arg   input private key format (PEM or ENGINE)\n");
 552                 BIO_printf (bio_err, "-out file      output file\n");
 553                 BIO_printf (bio_err, "-outform arg   output format SMIME (default), PEM or DER\n");
 554                 BIO_printf (bio_err, "-content file  supply or override content for detached signature\n");
 555                 BIO_printf (bio_err, "-to addr       to address\n");
 556                 BIO_printf (bio_err, "-from ad       from address\n");
 557                 BIO_printf (bio_err, "-subject s     subject\n");
 558                 BIO_printf (bio_err, "-text          include or delete text MIME headers\n");
 559                 BIO_printf (bio_err, "-CApath dir    trusted certificates directory\n");
 560                 BIO_printf (bio_err, "-CAfile file   trusted certificates file\n");
 561                 BIO_printf (bio_err, "-crl_check     check revocation status of signer's certificate using CRLs\n");
 562                 BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
 563 #ifndef OPENSSL_NO_ENGINE
 564                 BIO_printf (bio_err, "-engine e      use engine e, possibly a hardware device.\n");
 565 #endif
 566                 BIO_printf (bio_err, "-passin arg    input file pass phrase source\n");
 567                 BIO_printf(bio_err,  "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 568                 BIO_printf(bio_err,  "               load the file (or the files in the directory) into\n");
 569                 BIO_printf(bio_err,  "               the random number generator\n");
 570                 BIO_printf (bio_err, "cert.pem       recipient certificate(s) for encryption\n");
 571                 goto end;
 572                 }
 573
 574 #ifndef OPENSSL_NO_ENGINE
 575         e = setup_engine(bio_err, engine, 0);
 576 #endif
 577
 578         if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))
 579                 {
 580                 BIO_printf(bio_err, "Error getting password\n");
 581                 goto end;
 582                 }
 583
 584         if (need_rand)
 585                 {
 586                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 587                 if (inrand != NULL)
 588                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 589                                 app_RAND_load_files(inrand));
 590                 }
 591
 592         ret = 2;
 593
 594         if (!(operation & SMIME_SIGNERS))
 595                 flags &= ~CMS_DETACHED;
 596
 597         if (operation & SMIME_OP)
 598                 {
 599                 if (outformat == FORMAT_ASN1)
 600                         outmode = "wb";
 601                 }
 602         else
 603                 {
 604                 if (flags & CMS_BINARY)
 605                         outmode = "wb";
 606                 }
 607
 608         if (operation & SMIME_IP)
 609                 {
 610                 if (informat == FORMAT_ASN1)
 611                         inmode = "rb";
 612                 }
 613         else
 614                 {
 615                 if (flags & CMS_BINARY)
 616                         inmode = "rb";
 617                 }
 618
 619         if (operation == SMIME_ENCRYPT)
 620                 {
 621                 if (!cipher)
 622                         {
 623 #ifndef OPENSSL_NO_DES
 624                         cipher = EVP_des_ede3_cbc();
 625 #else
 626                         BIO_printf(bio_err, "No cipher selected\n");
 627                         goto end;
 628 #endif
 629                         }
 630
 631                 if (secret_key && !secret_keyid)
 632                         {
 633                         BIO_printf(bio_err, "No sectre key id\n");
 634                         goto end;
 635                         }
 636
 637                 if (*args)
 638                         encerts = sk_X509_new_null();
 639                 while (*args)
 640                         {
 641                         if (!(cert = load_cert(bio_err,*args,FORMAT_PEM,
 642                                 NULL, e, "recipient certificate file")))
 643                                 goto end;
 644                         sk_X509_push(encerts, cert);
 645                         cert = NULL;
 646                         args++;
 647                         }
 648                 }
 649
 650         if (certfile)
 651                 {
 652                 if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
 653                         e, "certificate file")))
 654                         {
 655                         ERR_print_errors(bio_err);
 656                         goto end;
 657                         }
 658                 }
 659
 660         if (recipfile && (operation == SMIME_DECRYPT))
 661                 {
 662                 if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
 663                         e, "recipient certificate file")))
 664                         {
 665                         ERR_print_errors(bio_err);
 666                         goto end;
 667                         }
 668                 }
 669
 670         if (operation == SMIME_DECRYPT)
 671                 {
 672                 if (!keyfile)
 673                         keyfile = recipfile;
 674                 }
 675         else if (operation == SMIME_SIGN)
 676                 {
 677                 if (!keyfile)
 678                         keyfile = signerfile;
 679                 }
 680         else keyfile = NULL;
 681
 682         if (keyfile)
 683                 {
 684                 key = load_key(bio_err, keyfile, keyform, 0, passin, e,
 685                                "signing key file");
 686                 if (!key)
 687                         goto end;
 688                 }
 689
 690         if (infile)
 691                 {
 692                 if (!(in = BIO_new_file(infile, inmode)))
 693                         {
 694                         BIO_printf (bio_err,
 695                                  "Can't open input file %s\n", infile);
 696                         goto end;
 697                         }
 698                 }
 699         else
 700                 in = BIO_new_fp(stdin, BIO_NOCLOSE);
 701
 702         if (operation & SMIME_IP)
 703                 {
 704                 if (informat == FORMAT_SMIME)
 705                         cms = SMIME_read_CMS(in, &indata);
 706                 else if (informat == FORMAT_PEM)
 707                         cms = PEM_read_bio_CMS(in, NULL, NULL, NULL);
 708                 else if (informat == FORMAT_ASN1)
 709                         cms = d2i_CMS_bio(in, NULL);
 710                 else
 711                         {
 712                         BIO_printf(bio_err, "Bad input format for CMS file\n");
 713                         goto end;
 714                         }
 715
 716                 if (!cms)
 717                         {
 718                         BIO_printf(bio_err, "Error reading S/MIME message\n");
 719                         goto end;
 720                         }
 721                 if (contfile)
 722                         {
 723                         BIO_free(indata);
 724                         if (!(indata = BIO_new_file(contfile, "rb")))
 725                                 {
 726                                 BIO_printf(bio_err, "Can't read content file %s\n", contfile);
 727                                 goto end;
 728                                 }
 729                         }
 730                 }
 731
 732         if (outfile)
 733                 {
 734                 if (!(out = BIO_new_file(outfile, outmode)))
 735                         {
 736                         BIO_printf (bio_err,
 737                                  "Can't open output file %s\n", outfile);
 738                         goto end;
 739                         }
 740                 }
 741         else
 742                 {
 743                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 744 #ifdef OPENSSL_SYS_VMS
 745                 {
 746                     BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 747                     out = BIO_push(tmpbio, out);
 748                 }
 749 #endif
 750                 }
 751
 752         if (operation == SMIME_VERIFY)
 753                 {
 754                 if (!(store = setup_verify(bio_err, CAfile, CApath)))
 755                         goto end;
 756                 X509_STORE_set_verify_cb_func(store, smime_cb);
 757                 if (vpm)
 758                         X509_STORE_set1_param(store, vpm);
 759                 }
 760
 761
 762         ret = 3;
 763
 764         if (operation == SMIME_DATA_CREATE)
 765                 {
 766                 cms = CMS_data_create(in, flags);
 767                 }
 768         else if (operation == SMIME_DIGEST_CREATE)
 769                 {
 770                 cms = CMS_digest_create(in, sign_md, flags);
 771                 }
 772         else if (operation == SMIME_COMPRESS)
 773                 {
 774                 cms = CMS_compress(in, -1, flags);
 775                 }
 776         else if (operation == SMIME_ENCRYPT)
 777                 {
 778                 flags |= CMS_PARTIAL;
 779                 cms = CMS_encrypt(encerts, in, cipher, flags);
 780                 if (!cms)
 781                         goto end;
 782                 if (secret_key)
 783                         {
 784                         if (!CMS_add0_recipient_key(cms, NID_undef,
 785                                                 secret_key, secret_keylen,
 786                                                 secret_keyid, secret_keyidlen,
 787                                                 NULL, NULL, NULL))
 788                                 goto end;
 789                         /* NULL these because call absorbs them */
 790                         secret_key = NULL;
 791                         secret_keyid = NULL;
 792                         }
 793                 if (!(flags & CMS_STREAM))
 794                         {
 795                         if (!CMS_final(cms, in, flags))
 796                                 goto end;
 797                         }
 798                 }
 799         else if (operation == SMIME_ENCRYPTED_ENCRYPT)
 800                 {
 801                 cms = CMS_EncryptedData_encrypt(in, cipher,
 802                                                 secret_key, secret_keylen,
 803                                                 flags);
 804
 805                 }
 806         else if (operation & SMIME_SIGNERS)
 807                 {
 808                 int i;
 809                 /* If detached data content we only enable streaming if
 810                  * S/MIME output format.
 811                  */
 812                 if (operation == SMIME_SIGN)
 813                         {
 814                         if (flags & CMS_DETACHED)
 815                                 {
 816                                 if (outformat != FORMAT_SMIME)
 817                                         flags &= ~CMS_STREAM;
 818                                 }
 819                         flags |= CMS_PARTIAL;
 820                         cms = CMS_sign(NULL, NULL, other, in, flags);
 821                         if (econtent_type)
 822                                 CMS_set1_eContentType(cms, econtent_type);
 823                         if (!cms)
 824                                 goto end;
 825                         }
 826                 else
 827                         flags |= CMS_REUSE_DIGEST;
 828                 for (i = 0; i < sk_num(sksigners); i++)
 829                         {
 830                         signerfile = sk_value(sksigners, i);
 831                         keyfile = sk_value(skkeys, i);
 832                         signer = load_cert(bio_err, signerfile,FORMAT_PEM, NULL,
 833                                         e, "signer certificate");
 834                         if (!signer)
 835                                 goto end;
 836                         key = load_key(bio_err, keyfile, keyform, 0, passin, e,
 837                                "signing key file");
 838                         if (!key)
 839                                 goto end;
 840                         if (!CMS_add1_signer(cms, signer, key, sign_md, flags))
 841                                 goto end;
 842                         X509_free(signer);
 843                         signer = NULL;
 844                         EVP_PKEY_free(key);
 845                         key = NULL;
 846                         }
 847                 /* If not streaming or resigning finalize structure */
 848                 if ((operation == SMIME_SIGN) && !(flags & CMS_STREAM))
 849                         {
 850                         if (!CMS_final(cms, in, flags))
 851                                 goto end;
 852                         }
 853                 }
 854
 855         if (!cms)
 856                 {
 857                 BIO_printf(bio_err, "Error creating CMS structure\n");
 858                 goto end;
 859                 }
 860
 861         ret = 4;
 862         if (operation == SMIME_DECRYPT)
 863                 {
 864
 865                 if (secret_key)
 866                         {
 867                         if (!CMS_decrypt_set1_key(cms,
 868                                                 secret_key, secret_keylen,
 869                                                 secret_keyid, secret_keyidlen))
 870                                 {
 871                                 BIO_puts(bio_err,
 872                                         "Error decrypting CMS using secret key\n");
 873                                 goto end;
 874                                 }
 875                         }
 876
 877                 if (key)
 878                         {
 879                         if (!CMS_decrypt_set1_pkey(cms, key, recip))
 880                                 {
 881                                 BIO_puts(bio_err,
 882                                         "Error decrypting CMS using private key\n");
 883                                 goto end;
 884                                 }
 885                         }
 886
 887                 if (!CMS_decrypt(cms, NULL, NULL, indata, out, flags))
 888                         {
 889                         BIO_printf(bio_err, "Error decrypting CMS structure\n");
 890                         goto end;
 891                         }
 892                 }
 893         else if (operation == SMIME_DATAOUT)
 894                 {
 895                 if (!CMS_data(cms, out, flags))
 896                         goto end;
 897                 }
 898         else if (operation == SMIME_UNCOMPRESS)
 899                 {
 900                 if (!CMS_uncompress(cms, indata, out, flags))
 901                         goto end;
 902                 }
 903         else if (operation == SMIME_DIGEST_VERIFY)
 904                 {
 905                 if (CMS_digest_verify(cms, indata, out, flags) > 0)
 906                         BIO_printf(bio_err, "Verification successful\n");
 907                 else
 908                         {
 909                         BIO_printf(bio_err, "Verification failure\n");
 910                         goto end;
 911                         }
 912                 }
 913         else if (operation == SMIME_ENCRYPTED_DECRYPT)
 914                 {
 915                 if (!CMS_EncryptedData_decrypt(cms, secret_key, secret_keylen,
 916                                                 indata, out, flags))
 917                         goto end;
 918                 }
 919         else if (operation == SMIME_VERIFY)
 920                 {
 921                 if (CMS_verify(cms, other, store, indata, out, flags) > 0)
 922                         BIO_printf(bio_err, "Verification successful\n");
 923                 else
 924                         {
 925                         BIO_printf(bio_err, "Verification failure\n");
 926                         goto end;
 927                         }
 928                 if (signerfile)
 929                         {
 930                         STACK_OF(X509) *signers;
 931                         signers = CMS_get0_signers(cms);
 932                         if (!save_certs(signerfile, signers))
 933                                 {
 934                                 BIO_printf(bio_err,
 935                                                 "Error writing signers to %s\n",
 936                                                                 signerfile);
 937                                 ret = 5;
 938                                 goto end;
 939                                 }
 940                         sk_X509_free(signers);
 941                         }
 942                 }
 943         else
 944                 {
 945                 if (noout)
 946                         {
 947                         if (print)
 948                                 CMS_ContentInfo_print_ctx(out, cms, 0, NULL);
 949                         }
 950                 else if (outformat == FORMAT_SMIME)
 951                         {
 952                         if (to)
 953                                 BIO_printf(out, "To: %s\n", to);
 954                         if (from)
 955                                 BIO_printf(out, "From: %s\n", from);
 956                         if (subject)
 957                                 BIO_printf(out, "Subject: %s\n", subject);
 958                         if (operation == SMIME_RESIGN)
 959                                 ret = SMIME_write_CMS(out, cms, indata, flags);
 960                         else
 961                                 ret = SMIME_write_CMS(out, cms, in, flags);
 962                         }
 963                 else if (outformat == FORMAT_PEM)
 964                         ret = PEM_write_bio_CMS_stream(out, cms, in, flags);
 965                 else if (outformat == FORMAT_ASN1)
 966                         ret = i2d_CMS_bio_stream(out,cms, in, flags);
 967                 else
 968                         {
 969                         BIO_printf(bio_err, "Bad output format for CMS file\n");
 970                         goto end;
 971                         }
 972                 if (ret <= 0)
 973                         {
 974                         ret = 6;
 975                         goto end;
 976                         }
 977                 }
 978         ret = 0;
 979 end:
 980         if (ret)
 981                 ERR_print_errors(bio_err);
 982         if (need_rand)
 983                 app_RAND_write_file(NULL, bio_err);
 984         sk_X509_pop_free(encerts, X509_free);
 985         sk_X509_pop_free(other, X509_free);
 986         if (vpm)
 987                 X509_VERIFY_PARAM_free(vpm);
 988         if (sksigners)
 989                 sk_free(sksigners);
 990         if (skkeys)
 991                 sk_free(skkeys);
 992         if (secret_key)
 993                 OPENSSL_free(secret_key);
 994         if (secret_keyid)
 995                 OPENSSL_free(secret_keyid);
 996         if (econtent_type)
 997                 ASN1_OBJECT_free(econtent_type);
 998         X509_STORE_free(store);
 999         X509_free(cert);
1000         X509_free(recip);
1001         X509_free(signer);
1002         EVP_PKEY_free(key);
1003         CMS_ContentInfo_free(cms);
1004         BIO_free(in);
1005         BIO_free(indata);
1006         BIO_free_all(out);
1007         if (passin) OPENSSL_free(passin);
1008         return (ret);
1009 }
1010
1011 static int save_certs(char *signerfile, STACK_OF(X509) *signers)
1012         {
1013         int i;
1014         BIO *tmp;
1015         if (!signerfile)
1016                 return 1;
1017         tmp = BIO_new_file(signerfile, "w");
1018         if (!tmp) return 0;
1019         for(i = 0; i < sk_X509_num(signers); i++)
1020                 PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
1021         BIO_free(tmp);
1022         return 1;
1023         }
1024
1025
1026 /* Minimal callback just to output policy info (if any) */
1027
1028 static int smime_cb(int ok, X509_STORE_CTX *ctx)
1029         {
1030         int error;
1031
1032         error = X509_STORE_CTX_get_error(ctx);
1033
1034         if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
1035                 && ((error != X509_V_OK) || (ok != 2)))
1036                 return ok;
1037
1038         policies_print(NULL, ctx);
1039
1040         return ok;
1041
1042         }
1043
1044 #endif