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