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