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 static void receipt_request_print(BIO *out, CMS_ContentInfo *cms);
  74 static CMS_ReceiptRequest *make_receipt_request(STACK *rr_to, int rr_allorfirst,
  75                                                                 STACK *rr_from);
  76
  77 #define SMIME_OP        0x10
  78 #define SMIME_IP        0x20
  79 #define SMIME_SIGNERS   0x40
  80 #define SMIME_ENCRYPT           (1 | SMIME_OP)
  81 #define SMIME_DECRYPT           (2 | SMIME_IP)
  82 #define SMIME_SIGN              (3 | SMIME_OP | SMIME_SIGNERS)
  83 #define SMIME_VERIFY            (4 | SMIME_IP)
  84 #define SMIME_CMSOUT            (5 | SMIME_IP | SMIME_OP)
  85 #define SMIME_RESIGN            (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
  86 #define SMIME_DATAOUT           (7 | SMIME_IP)
  87 #define SMIME_DATA_CREATE       (8 | SMIME_OP)
  88 #define SMIME_DIGEST_VERIFY     (9 | SMIME_IP)
  89 #define SMIME_DIGEST_CREATE     (10 | SMIME_OP)
  90 #define SMIME_UNCOMPRESS        (11 | SMIME_IP)
  91 #define SMIME_COMPRESS          (12 | SMIME_OP)
  92 #define SMIME_ENCRYPTED_DECRYPT (13 | SMIME_IP)
  93 #define SMIME_ENCRYPTED_ENCRYPT (14 | SMIME_OP)
  94
  95 int MAIN(int, char **);
  96
  97 int MAIN(int argc, char **argv)
  98         {
  99         ENGINE *e = NULL;
 100         int operation = 0;
 101         int ret = 0;
 102         char **args;
 103         const char *inmode = "r", *outmode = "w";
 104         char *infile = NULL, *outfile = NULL;
 105         char *signerfile = NULL, *recipfile = NULL;
 106         STACK *sksigners = NULL, *skkeys = NULL;
 107         char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
 108         const EVP_CIPHER *cipher = NULL;
 109         CMS_ContentInfo *cms = NULL;
 110         X509_STORE *store = NULL;
 111         X509 *cert = NULL, *recip = NULL, *signer = NULL;
 112         EVP_PKEY *key = NULL;
 113         STACK_OF(X509) *encerts = NULL, *other = NULL;
 114         BIO *in = NULL, *out = NULL, *indata = NULL;
 115         int badarg = 0;
 116         int flags = CMS_DETACHED, noout = 0, print = 0;
 117         int rr_print = 0, rr_allorfirst = -1;
 118         STACK *rr_to = NULL, *rr_from = NULL;
 119         CMS_ReceiptRequest *rr = NULL;
 120         char *to = NULL, *from = NULL, *subject = NULL;
 121         char *CAfile = NULL, *CApath = NULL;
 122         char *passargin = NULL, *passin = NULL;
 123         char *inrand = NULL;
 124         int need_rand = 0;
 125         const EVP_MD *sign_md = NULL;
 126         int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
 127         int keyform = FORMAT_PEM;
 128 #ifndef OPENSSL_NO_ENGINE
 129         char *engine=NULL;
 130 #endif
 131         unsigned char *secret_key = NULL, *secret_keyid = NULL;
 132         size_t secret_keylen = 0, secret_keyidlen = 0;
 133
 134         ASN1_OBJECT *econtent_type = NULL;
 135
 136         X509_VERIFY_PARAM *vpm = NULL;
 137
 138         args = argv + 1;
 139         ret = 1;
 140
 141         apps_startup();
 142
 143         if (bio_err == NULL)
 144                 {
 145                 if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 146                         BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
 147                 }
 148
 149         if (!load_config(bio_err, NULL))
 150                 goto end;
 151
 152         while (!badarg && *args && *args[0] == '-')
 153                 {
 154                 if (!strcmp (*args, "-encrypt"))
 155                         operation = SMIME_ENCRYPT;
 156                 else if (!strcmp (*args, "-decrypt"))
 157                         operation = SMIME_DECRYPT;
 158                 else if (!strcmp (*args, "-sign"))
 159                         operation = SMIME_SIGN;
 160                 else if (!strcmp (*args, "-resign"))
 161                         operation = SMIME_RESIGN;
 162                 else if (!strcmp (*args, "-verify"))
 163                         operation = SMIME_VERIFY;
 164                 else if (!strcmp (*args, "-cmsout"))
 165                         operation = SMIME_CMSOUT;
 166                 else if (!strcmp (*args, "-data_out"))
 167                         operation = SMIME_DATAOUT;
 168                 else if (!strcmp (*args, "-data_create"))
 169                         operation = SMIME_DATA_CREATE;
 170                 else if (!strcmp (*args, "-digest_verify"))
 171                         operation = SMIME_DIGEST_VERIFY;
 172                 else if (!strcmp (*args, "-digest_create"))
 173                         operation = SMIME_DIGEST_CREATE;
 174                 else if (!strcmp (*args, "-compress"))
 175                         operation = SMIME_COMPRESS;
 176                 else if (!strcmp (*args, "-uncompress"))
 177                         operation = SMIME_UNCOMPRESS;
 178                 else if (!strcmp (*args, "-EncryptedData_decrypt"))
 179                         operation = SMIME_ENCRYPTED_DECRYPT;
 180                 else if (!strcmp (*args, "-EncryptedData_encrypt"))
 181                         operation = SMIME_ENCRYPTED_ENCRYPT;
 182 #ifndef OPENSSL_NO_DES
 183                 else if (!strcmp (*args, "-des3"))
 184                                 cipher = EVP_des_ede3_cbc();
 185                 else if (!strcmp (*args, "-des"))
 186                                 cipher = EVP_des_cbc();
 187 #endif
 188 #ifndef OPENSSL_NO_SEED
 189                 else if (!strcmp (*args, "-seed"))
 190                                 cipher = EVP_seed_cbc();
 191 #endif
 192 #ifndef OPENSSL_NO_RC2
 193                 else if (!strcmp (*args, "-rc2-40"))
 194                                 cipher = EVP_rc2_40_cbc();
 195                 else if (!strcmp (*args, "-rc2-128"))
 196                                 cipher = EVP_rc2_cbc();
 197                 else if (!strcmp (*args, "-rc2-64"))
 198                                 cipher = EVP_rc2_64_cbc();
 199 #endif
 200 #ifndef OPENSSL_NO_AES
 201                 else if (!strcmp(*args,"-aes128"))
 202                                 cipher = EVP_aes_128_cbc();
 203                 else if (!strcmp(*args,"-aes192"))
 204                                 cipher = EVP_aes_192_cbc();
 205                 else if (!strcmp(*args,"-aes256"))
 206                                 cipher = EVP_aes_256_cbc();
 207 #endif
 208 #ifndef OPENSSL_NO_CAMELLIA
 209                 else if (!strcmp(*args,"-camellia128"))
 210                                 cipher = EVP_camellia_128_cbc();
 211                 else if (!strcmp(*args,"-camellia192"))
 212                                 cipher = EVP_camellia_192_cbc();
 213                 else if (!strcmp(*args,"-camellia256"))
 214                                 cipher = EVP_camellia_256_cbc();
 215 #endif
 216                 else if (!strcmp (*args, "-text"))
 217                                 flags |= CMS_TEXT;
 218                 else if (!strcmp (*args, "-nointern"))
 219                                 flags |= CMS_NOINTERN;
 220                 else if (!strcmp (*args, "-noverify")
 221                         || !strcmp (*args, "-no_signer_cert_verify"))
 222                                 flags |= CMS_NO_SIGNER_CERT_VERIFY;
 223                 else if (!strcmp (*args, "-nocerts"))
 224                                 flags |= CMS_NOCERTS;
 225                 else if (!strcmp (*args, "-noattr"))
 226                                 flags |= CMS_NOATTR;
 227                 else if (!strcmp (*args, "-nodetach"))
 228                                 flags &= ~CMS_DETACHED;
 229                 else if (!strcmp (*args, "-nosmimecap"))
 230                                 flags |= CMS_NOSMIMECAP;
 231                 else if (!strcmp (*args, "-binary"))
 232                                 flags |= CMS_BINARY;
 233                 else if (!strcmp (*args, "-keyid"))
 234                                 flags |= CMS_USE_KEYID;
 235                 else if (!strcmp (*args, "-nosigs"))
 236                                 flags |= CMS_NOSIGS;
 237                 else if (!strcmp (*args, "-no_content_verify"))
 238                                 flags |= CMS_NO_CONTENT_VERIFY;
 239                 else if (!strcmp (*args, "-no_attr_verify"))
 240                                 flags |= CMS_NO_ATTR_VERIFY;
 241                 else if (!strcmp (*args, "-stream"))
 242                                 flags |= CMS_STREAM;
 243                 else if (!strcmp (*args, "-indef"))
 244                                 flags |= CMS_STREAM;
 245                 else if (!strcmp (*args, "-noindef"))
 246                                 flags &= ~CMS_STREAM;
 247                 else if (!strcmp (*args, "-nooldmime"))
 248                                 flags |= CMS_NOOLDMIMETYPE;
 249                 else if (!strcmp (*args, "-crlfeol"))
 250                                 flags |= CMS_CRLFEOL;
 251                 else if (!strcmp (*args, "-noout"))
 252                                 noout = 1;
 253                 else if (!strcmp (*args, "-receipt_request_print"))
 254                                 rr_print = 1;
 255                 else if (!strcmp (*args, "-receipt_request_all"))
 256                                 rr_allorfirst = 0;
 257                 else if (!strcmp (*args, "-receipt_request_first"))
 258                                 rr_allorfirst = 1;
 259                 else if (!strcmp(*args,"-receipt_request_from"))
 260                         {
 261                         if (!args[1])
 262                                 goto argerr;
 263                         args++;
 264                         if (!rr_from)
 265                                 rr_from = sk_new_null();
 266                         sk_push(rr_from, *args);
 267                         }
 268                 else if (!strcmp(*args,"-receipt_request_to"))
 269                         {
 270                         if (!args[1])
 271                                 goto argerr;
 272                         args++;
 273                         if (!rr_to)
 274                                 rr_to = sk_new_null();
 275                         sk_push(rr_to, *args);
 276                         }
 277                 else if (!strcmp (*args, "-print"))
 278                                 {
 279                                 noout = 1;
 280                                 print = 1;
 281                                 }
 282                 else if (!strcmp(*args,"-secretkey"))
 283                         {
 284                         long ltmp;
 285                         if (!args[1])
 286                                 goto argerr;
 287                         args++;
 288                         secret_key = string_to_hex(*args, &ltmp);
 289                         if (!secret_key)
 290                                 {
 291                                 BIO_printf(bio_err, "Invalid key %s\n", *args);
 292                                 goto argerr;
 293                                 }
 294                         secret_keylen = (size_t)ltmp;
 295                         }
 296                 else if (!strcmp(*args,"-secretkeyid"))
 297                         {
 298                         long ltmp;
 299                         if (!args[1])
 300                                 goto argerr;
 301                         args++;
 302                         secret_keyid = string_to_hex(*args, &ltmp);
 303                         if (!secret_keyid)
 304                                 {
 305                                 BIO_printf(bio_err, "Invalid id %s\n", *args);
 306                                 goto argerr;
 307                                 }
 308                         secret_keyidlen = (size_t)ltmp;
 309                         }
 310                 else if (!strcmp(*args,"-econtent_type"))
 311                         {
 312                         if (!args[1])
 313                                 goto argerr;
 314                         args++;
 315                         econtent_type = OBJ_txt2obj(*args, 0);
 316                         if (!econtent_type)
 317                                 {
 318                                 BIO_printf(bio_err, "Invalid OID %s\n", *args);
 319                                 goto argerr;
 320                                 }
 321                         }
 322                 else if (!strcmp(*args,"-rand"))
 323                         {
 324                         if (!args[1])
 325                                 goto argerr;
 326                         args++;
 327                         inrand = *args;
 328                         need_rand = 1;
 329                         }
 330 #ifndef OPENSSL_NO_ENGINE
 331                 else if (!strcmp(*args,"-engine"))
 332                         {
 333                         if (!args[1])
 334                                 goto argerr;
 335                         engine = *++args;
 336                         }
 337 #endif
 338                 else if (!strcmp(*args,"-passin"))
 339                         {
 340                         if (!args[1])
 341                                 goto argerr;
 342                         passargin = *++args;
 343                         }
 344                 else if (!strcmp (*args, "-to"))
 345                         {
 346                         if (!args[1])
 347                                 goto argerr;
 348                         to = *++args;
 349                         }
 350                 else if (!strcmp (*args, "-from"))
 351                         {
 352                         if (!args[1])
 353                                 goto argerr;
 354                         from = *++args;
 355                         }
 356                 else if (!strcmp (*args, "-subject"))
 357                         {
 358                         if (!args[1])
 359                                 goto argerr;
 360                         subject = *++args;
 361                         }
 362                 else if (!strcmp (*args, "-signer"))
 363                         {
 364                         if (!args[1])
 365                                 goto argerr;
 366                         /* If previous -signer argument add signer to list */
 367
 368                         if (signerfile)
 369                                 {
 370                                 if (!sksigners)
 371                                         sksigners = sk_new_null();
 372                                 sk_push(sksigners, signerfile);
 373                                 if (!keyfile)
 374                                         keyfile = signerfile;
 375                                 if (!skkeys)
 376                                         skkeys = sk_new_null();
 377                                 sk_push(skkeys, keyfile);
 378                                 keyfile = NULL;
 379                                 }
 380                         signerfile = *++args;
 381                         }
 382                 else if (!strcmp (*args, "-recip"))
 383                         {
 384                         if (!args[1])
 385                                 goto argerr;
 386                         recipfile = *++args;
 387                         }
 388                 else if (!strcmp (*args, "-md"))
 389                         {
 390                         if (!args[1])
 391                                 goto argerr;
 392                         sign_md = EVP_get_digestbyname(*++args);
 393                         if (sign_md == NULL)
 394                                 {
 395                                 BIO_printf(bio_err, "Unknown digest %s\n",
 396                                                         *args);
 397                                 goto argerr;
 398                                 }
 399                         }
 400                 else if (!strcmp (*args, "-inkey"))
 401                         {
 402                         if (!args[1])
 403                                 goto argerr;
 404                         /* If previous -inkey arument add signer to list */
 405                         if (keyfile)
 406                                 {
 407                                 if (!signerfile)
 408                                         {
 409                                         BIO_puts(bio_err, "Illegal -inkey without -signer\n");
 410                                         goto argerr;
 411                                         }
 412                                 if (!sksigners)
 413                                         sksigners = sk_new_null();
 414                                 sk_push(sksigners, signerfile);
 415                                 signerfile = NULL;
 416                                 if (!skkeys)
 417                                         skkeys = sk_new_null();
 418                                 sk_push(skkeys, keyfile);
 419                                 }
 420                         keyfile = *++args;
 421                         }
 422                 else if (!strcmp (*args, "-keyform"))
 423                         {
 424                         if (!args[1])
 425                                 goto argerr;
 426                         keyform = str2fmt(*++args);
 427                         }
 428                 else if (!strcmp (*args, "-certfile"))
 429                         {
 430                         if (!args[1])
 431                                 goto argerr;
 432                         certfile = *++args;
 433                         }
 434                 else if (!strcmp (*args, "-CAfile"))
 435                         {
 436                         if (!args[1])
 437                                 goto argerr;
 438                         CAfile = *++args;
 439                         }
 440                 else if (!strcmp (*args, "-CApath"))
 441                         {
 442                         if (!args[1])
 443                                 goto argerr;
 444                         CApath = *++args;
 445                         }
 446                 else if (!strcmp (*args, "-in"))
 447                         {
 448                         if (!args[1])
 449                                 goto argerr;
 450                         infile = *++args;
 451                         }
 452                 else if (!strcmp (*args, "-inform"))
 453                         {
 454                         if (!args[1])
 455                                 goto argerr;
 456                         informat = str2fmt(*++args);
 457                         }
 458                 else if (!strcmp (*args, "-outform"))
 459                         {
 460                         if (!args[1])
 461                                 goto argerr;
 462                         outformat = str2fmt(*++args);
 463                         }
 464                 else if (!strcmp (*args, "-out"))
 465                         {
 466                         if (!args[1])
 467                                 goto argerr;
 468                         outfile = *++args;
 469                         }
 470                 else if (!strcmp (*args, "-content"))
 471                         {
 472                         if (!args[1])
 473                                 goto argerr;
 474                         contfile = *++args;
 475                         }
 476                 else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
 477                         continue;
 478                 else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL)
 479                         badarg = 1;
 480                 args++;
 481                 }
 482
 483         if (((rr_allorfirst != -1) || rr_from) && !rr_to)
 484                 {
 485                 BIO_puts(bio_err, "No Signed Receipts Recipients\n");
 486                 goto argerr;
 487                 }
 488
 489         if (!(operation & SMIME_SIGNERS)  && (rr_to || rr_from))
 490                 {
 491                 BIO_puts(bio_err, "Signed receipts only allowed with -sign\n");
 492                 goto argerr;
 493                 }
 494         if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners))
 495                 {
 496                 BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
 497                 goto argerr;
 498                 }
 499
 500         if (operation & SMIME_SIGNERS)
 501                 {
 502                 if (keyfile && !signerfile)
 503                         {
 504                         BIO_puts(bio_err, "Illegal -inkey without -signer\n");
 505                         goto argerr;
 506                         }
 507                 /* Check to see if any final signer needs to be appended */
 508                 if (signerfile)
 509                         {
 510                         if (!sksigners)
 511                                 sksigners = sk_new_null();
 512                         sk_push(sksigners, signerfile);
 513                         if (!skkeys)
 514                                 skkeys = sk_new_null();
 515                         if (!keyfile)
 516                                 keyfile = signerfile;
 517                         sk_push(skkeys, keyfile);
 518                         }
 519                 if (!sksigners)
 520                         {
 521                         BIO_printf(bio_err, "No signer certificate specified\n");
 522                         badarg = 1;
 523                         }
 524                 signerfile = NULL;
 525                 keyfile = NULL;
 526                 need_rand = 1;
 527                 }
 528         else if (operation == SMIME_DECRYPT)
 529                 {
 530                 if (!recipfile && !keyfile && !secret_key)
 531                         {
 532                         BIO_printf(bio_err, "No recipient certificate or key specified\n");
 533                         badarg = 1;
 534                         }
 535                 }
 536         else if (operation == SMIME_ENCRYPT)
 537                 {
 538                 if (!*args && !secret_key)
 539                         {
 540                         BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
 541                         badarg = 1;
 542                         }
 543                 need_rand = 1;
 544                 }
 545         else if (!operation)
 546                 badarg = 1;
 547
 548         if (badarg)
 549                 {
 550                 argerr:
 551                 BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
 552                 BIO_printf (bio_err, "where options are\n");
 553                 BIO_printf (bio_err, "-encrypt       encrypt message\n");
 554                 BIO_printf (bio_err, "-decrypt       decrypt encrypted message\n");
 555                 BIO_printf (bio_err, "-sign          sign message\n");
 556                 BIO_printf (bio_err, "-verify        verify signed message\n");
 557                 BIO_printf (bio_err, "-cmsout        output CMS structure\n");
 558 #ifndef OPENSSL_NO_DES
 559                 BIO_printf (bio_err, "-des3          encrypt with triple DES\n");
 560                 BIO_printf (bio_err, "-des           encrypt with DES\n");
 561 #endif
 562 #ifndef OPENSSL_NO_SEED
 563                 BIO_printf (bio_err, "-seed          encrypt with SEED\n");
 564 #endif
 565 #ifndef OPENSSL_NO_RC2
 566                 BIO_printf (bio_err, "-rc2-40        encrypt with RC2-40 (default)\n");
 567                 BIO_printf (bio_err, "-rc2-64        encrypt with RC2-64\n");
 568                 BIO_printf (bio_err, "-rc2-128       encrypt with RC2-128\n");
 569 #endif
 570 #ifndef OPENSSL_NO_AES
 571                 BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");
 572                 BIO_printf (bio_err, "               encrypt PEM output with cbc aes\n");
 573 #endif
 574 #ifndef OPENSSL_NO_CAMELLIA
 575                 BIO_printf (bio_err, "-camellia128, -camellia192, -camellia256\n");
 576                 BIO_printf (bio_err, "               encrypt PEM output with cbc camellia\n");
 577 #endif
 578                 BIO_printf (bio_err, "-nointern      don't search certificates in message for signer\n");
 579                 BIO_printf (bio_err, "-nosigs        don't verify message signature\n");
 580                 BIO_printf (bio_err, "-noverify      don't verify signers certificate\n");
 581                 BIO_printf (bio_err, "-nocerts       don't include signers certificate when signing\n");
 582                 BIO_printf (bio_err, "-nodetach      use opaque signing\n");
 583                 BIO_printf (bio_err, "-noattr        don't include any signed attributes\n");
 584                 BIO_printf (bio_err, "-binary        don't translate message to text\n");
 585                 BIO_printf (bio_err, "-certfile file other certificates file\n");
 586                 BIO_printf (bio_err, "-signer file   signer certificate file\n");
 587                 BIO_printf (bio_err, "-recip  file   recipient certificate file for decryption\n");
 588                 BIO_printf (bio_err, "-skeyid        use subject key identifier\n");
 589                 BIO_printf (bio_err, "-in file       input file\n");
 590                 BIO_printf (bio_err, "-inform arg    input format SMIME (default), PEM or DER\n");
 591                 BIO_printf (bio_err, "-inkey file    input private key (if not signer or recipient)\n");
 592                 BIO_printf (bio_err, "-keyform arg   input private key format (PEM or ENGINE)\n");
 593                 BIO_printf (bio_err, "-out file      output file\n");
 594                 BIO_printf (bio_err, "-outform arg   output format SMIME (default), PEM or DER\n");
 595                 BIO_printf (bio_err, "-content file  supply or override content for detached signature\n");
 596                 BIO_printf (bio_err, "-to addr       to address\n");
 597                 BIO_printf (bio_err, "-from ad       from address\n");
 598                 BIO_printf (bio_err, "-subject s     subject\n");
 599                 BIO_printf (bio_err, "-text          include or delete text MIME headers\n");
 600                 BIO_printf (bio_err, "-CApath dir    trusted certificates directory\n");
 601                 BIO_printf (bio_err, "-CAfile file   trusted certificates file\n");
 602                 BIO_printf (bio_err, "-crl_check     check revocation status of signer's certificate using CRLs\n");
 603                 BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
 604 #ifndef OPENSSL_NO_ENGINE
 605                 BIO_printf (bio_err, "-engine e      use engine e, possibly a hardware device.\n");
 606 #endif
 607                 BIO_printf (bio_err, "-passin arg    input file pass phrase source\n");
 608                 BIO_printf(bio_err,  "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 609                 BIO_printf(bio_err,  "               load the file (or the files in the directory) into\n");
 610                 BIO_printf(bio_err,  "               the random number generator\n");
 611                 BIO_printf (bio_err, "cert.pem       recipient certificate(s) for encryption\n");
 612                 goto end;
 613                 }
 614
 615 #ifndef OPENSSL_NO_ENGINE
 616         e = setup_engine(bio_err, engine, 0);
 617 #endif
 618
 619         if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))
 620                 {
 621                 BIO_printf(bio_err, "Error getting password\n");
 622                 goto end;
 623                 }
 624
 625         if (need_rand)
 626                 {
 627                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 628                 if (inrand != NULL)
 629                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 630                                 app_RAND_load_files(inrand));
 631                 }
 632
 633         ret = 2;
 634
 635         if (!(operation & SMIME_SIGNERS))
 636                 flags &= ~CMS_DETACHED;
 637
 638         if (operation & SMIME_OP)
 639                 {
 640                 if (outformat == FORMAT_ASN1)
 641                         outmode = "wb";
 642                 }
 643         else
 644                 {
 645                 if (flags & CMS_BINARY)
 646                         outmode = "wb";
 647                 }
 648
 649         if (operation & SMIME_IP)
 650                 {
 651                 if (informat == FORMAT_ASN1)
 652                         inmode = "rb";
 653                 }
 654         else
 655                 {
 656                 if (flags & CMS_BINARY)
 657                         inmode = "rb";
 658                 }
 659
 660         if (operation == SMIME_ENCRYPT)
 661                 {
 662                 if (!cipher)
 663                         {
 664 #ifndef OPENSSL_NO_DES
 665                         cipher = EVP_des_ede3_cbc();
 666 #else
 667                         BIO_printf(bio_err, "No cipher selected\n");
 668                         goto end;
 669 #endif
 670                         }
 671
 672                 if (secret_key && !secret_keyid)
 673                         {
 674                         BIO_printf(bio_err, "No sectre key id\n");
 675                         goto end;
 676                         }
 677
 678                 if (*args)
 679                         encerts = sk_X509_new_null();
 680                 while (*args)
 681                         {
 682                         if (!(cert = load_cert(bio_err,*args,FORMAT_PEM,
 683                                 NULL, e, "recipient certificate file")))
 684                                 goto end;
 685                         sk_X509_push(encerts, cert);
 686                         cert = NULL;
 687                         args++;
 688                         }
 689                 }
 690
 691         if (certfile)
 692                 {
 693                 if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
 694                         e, "certificate file")))
 695                         {
 696                         ERR_print_errors(bio_err);
 697                         goto end;
 698                         }
 699                 }
 700
 701         if (recipfile && (operation == SMIME_DECRYPT))
 702                 {
 703                 if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
 704                         e, "recipient certificate file")))
 705                         {
 706                         ERR_print_errors(bio_err);
 707                         goto end;
 708                         }
 709                 }
 710
 711         if (operation == SMIME_DECRYPT)
 712                 {
 713                 if (!keyfile)
 714                         keyfile = recipfile;
 715                 }
 716         else if (operation == SMIME_SIGN)
 717                 {
 718                 if (!keyfile)
 719                         keyfile = signerfile;
 720                 }
 721         else keyfile = NULL;
 722
 723         if (keyfile)
 724                 {
 725                 key = load_key(bio_err, keyfile, keyform, 0, passin, e,
 726                                "signing key file");
 727                 if (!key)
 728                         goto end;
 729                 }
 730
 731         if (infile)
 732                 {
 733                 if (!(in = BIO_new_file(infile, inmode)))
 734                         {
 735                         BIO_printf (bio_err,
 736                                  "Can't open input file %s\n", infile);
 737                         goto end;
 738                         }
 739                 }
 740         else
 741                 in = BIO_new_fp(stdin, BIO_NOCLOSE);
 742
 743         if (operation & SMIME_IP)
 744                 {
 745                 if (informat == FORMAT_SMIME)
 746                         cms = SMIME_read_CMS(in, &indata);
 747                 else if (informat == FORMAT_PEM)
 748                         cms = PEM_read_bio_CMS(in, NULL, NULL, NULL);
 749                 else if (informat == FORMAT_ASN1)
 750                         cms = d2i_CMS_bio(in, NULL);
 751                 else
 752                         {
 753                         BIO_printf(bio_err, "Bad input format for CMS file\n");
 754                         goto end;
 755                         }
 756
 757                 if (!cms)
 758                         {
 759                         BIO_printf(bio_err, "Error reading S/MIME message\n");
 760                         goto end;
 761                         }
 762                 if (contfile)
 763                         {
 764                         BIO_free(indata);
 765                         if (!(indata = BIO_new_file(contfile, "rb")))
 766                                 {
 767                                 BIO_printf(bio_err, "Can't read content file %s\n", contfile);
 768                                 goto end;
 769                                 }
 770                         }
 771                 }
 772
 773         if (outfile)
 774                 {
 775                 if (!(out = BIO_new_file(outfile, outmode)))
 776                         {
 777                         BIO_printf (bio_err,
 778                                  "Can't open output file %s\n", outfile);
 779                         goto end;
 780                         }
 781                 }
 782         else
 783                 {
 784                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 785 #ifdef OPENSSL_SYS_VMS
 786                 {
 787                     BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 788                     out = BIO_push(tmpbio, out);
 789                 }
 790 #endif
 791                 }
 792
 793         if (operation == SMIME_VERIFY)
 794                 {
 795                 if (!(store = setup_verify(bio_err, CAfile, CApath)))
 796                         goto end;
 797                 X509_STORE_set_verify_cb_func(store, smime_cb);
 798                 if (vpm)
 799                         X509_STORE_set1_param(store, vpm);
 800                 }
 801
 802
 803         ret = 3;
 804
 805         if (operation == SMIME_DATA_CREATE)
 806                 {
 807                 cms = CMS_data_create(in, flags);
 808                 }
 809         else if (operation == SMIME_DIGEST_CREATE)
 810                 {
 811                 cms = CMS_digest_create(in, sign_md, flags);
 812                 }
 813         else if (operation == SMIME_COMPRESS)
 814                 {
 815                 cms = CMS_compress(in, -1, flags);
 816                 }
 817         else if (operation == SMIME_ENCRYPT)
 818                 {
 819                 flags |= CMS_PARTIAL;
 820                 cms = CMS_encrypt(encerts, in, cipher, flags);
 821                 if (!cms)
 822                         goto end;
 823                 if (secret_key)
 824                         {
 825                         if (!CMS_add0_recipient_key(cms, NID_undef,
 826                                                 secret_key, secret_keylen,
 827                                                 secret_keyid, secret_keyidlen,
 828                                                 NULL, NULL, NULL))
 829                                 goto end;
 830                         /* NULL these because call absorbs them */
 831                         secret_key = NULL;
 832                         secret_keyid = NULL;
 833                         }
 834                 if (!(flags & CMS_STREAM))
 835                         {
 836                         if (!CMS_final(cms, in, flags))
 837                                 goto end;
 838                         }
 839                 }
 840         else if (operation == SMIME_ENCRYPTED_ENCRYPT)
 841                 {
 842                 cms = CMS_EncryptedData_encrypt(in, cipher,
 843                                                 secret_key, secret_keylen,
 844                                                 flags);
 845
 846                 }
 847         else if (operation & SMIME_SIGNERS)
 848                 {
 849                 int i;
 850                 /* If detached data content we enable streaming if
 851                  * S/MIME output format.
 852                  */
 853                 if (operation == SMIME_SIGN)
 854                         {
 855
 856                         if (flags & CMS_DETACHED)
 857                                 {
 858                                 if (outformat == FORMAT_SMIME)
 859                                         flags |= CMS_STREAM;
 860                                 }
 861                         flags |= CMS_PARTIAL;
 862                         cms = CMS_sign(NULL, NULL, other, in, flags);
 863                         if (!cms)
 864                                 goto end;
 865                         if (econtent_type)
 866                                 CMS_set1_eContentType(cms, econtent_type);
 867
 868                         if (rr_to)
 869                                 {
 870                                 rr = make_receipt_request(rr_to, rr_allorfirst,
 871                                                                 rr_from);
 872                                 if (!rr)
 873                                         {
 874                                         BIO_puts(bio_err,
 875                                 "Signed Receipt Request Creation Error\n");
 876                                         goto end;
 877                                         }
 878                                 }
 879                         }
 880                 else
 881                         flags |= CMS_REUSE_DIGEST;
 882                 for (i = 0; i < sk_num(sksigners); i++)
 883                         {
 884                         CMS_SignerInfo *si;
 885                         signerfile = sk_value(sksigners, i);
 886                         keyfile = sk_value(skkeys, i);
 887                         signer = load_cert(bio_err, signerfile,FORMAT_PEM, NULL,
 888                                         e, "signer certificate");
 889                         if (!signer)
 890                                 goto end;
 891                         key = load_key(bio_err, keyfile, keyform, 0, passin, e,
 892                                "signing key file");
 893                         if (!key)
 894                                 goto end;
 895                         si = CMS_add1_signer(cms, signer, key, sign_md, flags);
 896                         if (!si)
 897                                 goto end;
 898                         if (rr && !CMS_add1_ReceiptRequest(si, rr))
 899                                 goto end;
 900                         X509_free(signer);
 901                         signer = NULL;
 902                         EVP_PKEY_free(key);
 903                         key = NULL;
 904                         }
 905                 /* If not streaming or resigning finalize structure */
 906                 if ((operation == SMIME_SIGN) && !(flags & CMS_STREAM))
 907                         {
 908                         if (!CMS_final(cms, in, flags))
 909                                 goto end;
 910                         }
 911                 }
 912
 913         if (!cms)
 914                 {
 915                 BIO_printf(bio_err, "Error creating CMS structure\n");
 916                 goto end;
 917                 }
 918
 919         ret = 4;
 920         if (operation == SMIME_DECRYPT)
 921                 {
 922
 923                 if (secret_key)
 924                         {
 925                         if (!CMS_decrypt_set1_key(cms,
 926                                                 secret_key, secret_keylen,
 927                                                 secret_keyid, secret_keyidlen))
 928                                 {
 929                                 BIO_puts(bio_err,
 930                                         "Error decrypting CMS using secret key\n");
 931                                 goto end;
 932                                 }
 933                         }
 934
 935                 if (key)
 936                         {
 937                         if (!CMS_decrypt_set1_pkey(cms, key, recip))
 938                                 {
 939                                 BIO_puts(bio_err,
 940                                         "Error decrypting CMS using private key\n");
 941                                 goto end;
 942                                 }
 943                         }
 944
 945                 if (!CMS_decrypt(cms, NULL, NULL, indata, out, flags))
 946                         {
 947                         BIO_printf(bio_err, "Error decrypting CMS structure\n");
 948                         goto end;
 949                         }
 950                 }
 951         else if (operation == SMIME_DATAOUT)
 952                 {
 953                 if (!CMS_data(cms, out, flags))
 954                         goto end;
 955                 }
 956         else if (operation == SMIME_UNCOMPRESS)
 957                 {
 958                 if (!CMS_uncompress(cms, indata, out, flags))
 959                         goto end;
 960                 }
 961         else if (operation == SMIME_DIGEST_VERIFY)
 962                 {
 963                 if (CMS_digest_verify(cms, indata, out, flags) > 0)
 964                         BIO_printf(bio_err, "Verification successful\n");
 965                 else
 966                         {
 967                         BIO_printf(bio_err, "Verification failure\n");
 968                         goto end;
 969                         }
 970                 }
 971         else if (operation == SMIME_ENCRYPTED_DECRYPT)
 972                 {
 973                 if (!CMS_EncryptedData_decrypt(cms, secret_key, secret_keylen,
 974                                                 indata, out, flags))
 975                         goto end;
 976                 }
 977         else if (operation == SMIME_VERIFY)
 978                 {
 979                 if (CMS_verify(cms, other, store, indata, out, flags) > 0)
 980                         BIO_printf(bio_err, "Verification successful\n");
 981                 else
 982                         {
 983                         BIO_printf(bio_err, "Verification failure\n");
 984                         goto end;
 985                         }
 986                 if (signerfile)
 987                         {
 988                         STACK_OF(X509) *signers;
 989                         signers = CMS_get0_signers(cms);
 990                         if (!save_certs(signerfile, signers))
 991                                 {
 992                                 BIO_printf(bio_err,
 993                                                 "Error writing signers to %s\n",
 994                                                                 signerfile);
 995                                 ret = 5;
 996                                 goto end;
 997                                 }
 998                         sk_X509_free(signers);
 999                         }
1000                 if (rr_print)
1001                         receipt_request_print(bio_err, cms);
1002
1003                 }
1004         else
1005                 {
1006                 if (noout)
1007                         {
1008                         if (print)
1009                                 CMS_ContentInfo_print_ctx(out, cms, 0, NULL);
1010                         }
1011                 else if (outformat == FORMAT_SMIME)
1012                         {
1013                         if (to)
1014                                 BIO_printf(out, "To: %s\n", to);
1015                         if (from)
1016                                 BIO_printf(out, "From: %s\n", from);
1017                         if (subject)
1018                                 BIO_printf(out, "Subject: %s\n", subject);
1019                         if (operation == SMIME_RESIGN)
1020                                 ret = SMIME_write_CMS(out, cms, indata, flags);
1021                         else
1022                                 ret = SMIME_write_CMS(out, cms, in, flags);
1023                         }
1024                 else if (outformat == FORMAT_PEM)
1025                         ret = PEM_write_bio_CMS_stream(out, cms, in, flags);
1026                 else if (outformat == FORMAT_ASN1)
1027                         ret = i2d_CMS_bio_stream(out,cms, in, flags);
1028                 else
1029                         {
1030                         BIO_printf(bio_err, "Bad output format for CMS file\n");
1031                         goto end;
1032                         }
1033                 if (ret <= 0)
1034                         {
1035                         ret = 6;
1036                         goto end;
1037                         }
1038                 }
1039         ret = 0;
1040 end:
1041         if (ret)
1042                 ERR_print_errors(bio_err);
1043         if (need_rand)
1044                 app_RAND_write_file(NULL, bio_err);
1045         sk_X509_pop_free(encerts, X509_free);
1046         sk_X509_pop_free(other, X509_free);
1047         if (vpm)
1048                 X509_VERIFY_PARAM_free(vpm);
1049         if (sksigners)
1050                 sk_free(sksigners);
1051         if (skkeys)
1052                 sk_free(skkeys);
1053         if (secret_key)
1054                 OPENSSL_free(secret_key);
1055         if (secret_keyid)
1056                 OPENSSL_free(secret_keyid);
1057         if (econtent_type)
1058                 ASN1_OBJECT_free(econtent_type);
1059         if (rr)
1060                 CMS_ReceiptRequest_free(rr);
1061         if (rr_to)
1062                 sk_free(rr_to);
1063         if (rr_from)
1064                 sk_free(rr_from);
1065         X509_STORE_free(store);
1066         X509_free(cert);
1067         X509_free(recip);
1068         X509_free(signer);
1069         EVP_PKEY_free(key);
1070         CMS_ContentInfo_free(cms);
1071         BIO_free(in);
1072         BIO_free(indata);
1073         BIO_free_all(out);
1074         if (passin) OPENSSL_free(passin);
1075         return (ret);
1076 }
1077
1078 static int save_certs(char *signerfile, STACK_OF(X509) *signers)
1079         {
1080         int i;
1081         BIO *tmp;
1082         if (!signerfile)
1083                 return 1;
1084         tmp = BIO_new_file(signerfile, "w");
1085         if (!tmp) return 0;
1086         for(i = 0; i < sk_X509_num(signers); i++)
1087                 PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
1088         BIO_free(tmp);
1089         return 1;
1090         }
1091
1092
1093 /* Minimal callback just to output policy info (if any) */
1094
1095 static int smime_cb(int ok, X509_STORE_CTX *ctx)
1096         {
1097         int error;
1098
1099         error = X509_STORE_CTX_get_error(ctx);
1100
1101         if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
1102                 && ((error != X509_V_OK) || (ok != 2)))
1103                 return ok;
1104
1105         policies_print(NULL, ctx);
1106
1107         return ok;
1108
1109         }
1110
1111 static void gnames_stack_print(BIO *out, STACK_OF(GENERAL_NAMES) *gns)
1112         {
1113         STACK_OF(GENERAL_NAME) *gens;
1114         GENERAL_NAME *gen;
1115         int i, j;
1116         for (i = 0; i < sk_GENERAL_NAMES_num(gns); i++)
1117                 {
1118                 gens = sk_GENERAL_NAMES_value(gns, i);
1119                 for (j = 0; j < sk_GENERAL_NAME_num(gens); j++)
1120                         {
1121                         gen = sk_GENERAL_NAME_value(gens, j);
1122                         BIO_puts(out, "    ");
1123                         GENERAL_NAME_print(out, gen);
1124                         BIO_puts(out, "\n");
1125                         }
1126                 }
1127         return;
1128         }
1129
1130 static void receipt_request_print(BIO *out, CMS_ContentInfo *cms)
1131         {
1132         STACK_OF(CMS_SignerInfo) *sis;
1133         CMS_SignerInfo *si;
1134         CMS_ReceiptRequest *rr;
1135         int allorfirst;
1136         STACK_OF(GENERAL_NAMES) *rto, *rlist;
1137         ASN1_STRING *scid;
1138         int i, rv;
1139         sis = CMS_get0_SignerInfos(cms);
1140         for (i = 0; i < sk_CMS_SignerInfo_num(sis); i++)
1141                 {
1142                 si = sk_CMS_SignerInfo_value(sis, i);
1143                 rv = CMS_get1_ReceiptRequest(si, &rr);
1144                 BIO_printf(bio_err, "Signer %d:\n", i + 1);
1145                 if (rv == 0)
1146                         BIO_puts(bio_err, "  No Receipt Request\n");
1147                 else if (rv < 0)
1148                         {
1149                         BIO_puts(bio_err, "  Receipt Request Parse Error\n");
1150                         ERR_print_errors(bio_err);
1151                         }
1152                 else
1153                         {
1154                         char *id;
1155                         int idlen;
1156                         CMS_ReceiptRequest_get0_values(rr, &scid, &allorfirst,
1157                                                         &rlist, &rto);
1158                         BIO_puts(out, "  Signed Content ID:\n");
1159                         idlen = ASN1_STRING_length(scid);
1160                         id = (char *)ASN1_STRING_data(scid);
1161                         BIO_dump_indent(out, id, idlen, 4);
1162                         BIO_puts(out, "  Receipts From");
1163                         if (rlist)
1164                                 {
1165                                 BIO_puts(out, " List:\n");
1166                                 gnames_stack_print(out, rlist);
1167                                 }
1168                         else if (allorfirst == 1)
1169                                 BIO_puts(out, ": First Tier\n");
1170                         else if (allorfirst == 0)
1171                                 BIO_puts(out, ": All\n");
1172                         else
1173                                 BIO_printf(out, " Unknown (%d)\n", allorfirst);
1174                         BIO_puts(out, "  Receipts To:\n");
1175                         gnames_stack_print(out, rto);
1176                         }
1177                 if (rr)
1178                         CMS_ReceiptRequest_free(rr);
1179                 }
1180         }
1181
1182 static STACK_OF(GENERAL_NAMES) *make_names_stack(STACK *ns)
1183         {
1184         int i;
1185         STACK_OF(GENERAL_NAMES) *ret;
1186         GENERAL_NAMES *gens = NULL;
1187         GENERAL_NAME *gen = NULL;
1188         ret = sk_GENERAL_NAMES_new_null();
1189         if (!ret)
1190                 goto err;
1191         for (i = 0; i < sk_num(ns); i++)
1192                 {
1193                 char *str = sk_value(ns, i);
1194                 gen = a2i_GENERAL_NAME(NULL, NULL, NULL, GEN_EMAIL, str, 0);
1195                 if (!gen)
1196                         goto err;
1197                 gens = GENERAL_NAMES_new();
1198                 if (!gens)
1199                         goto err;
1200                 if (!sk_GENERAL_NAME_push(gens, gen))
1201                         goto err;
1202                 gen = NULL;
1203                 if (!sk_GENERAL_NAMES_push(ret, gens))
1204                         goto err;
1205                 gens = NULL;
1206                 }
1207
1208         return ret;
1209
1210         err:
1211         if (ret)
1212                 sk_GENERAL_NAMES_pop_free(ret, GENERAL_NAMES_free);
1213         if (gens)
1214                 GENERAL_NAMES_free(gens);
1215         if (gen)
1216                 GENERAL_NAME_free(gen);
1217         return NULL;
1218         }
1219
1220
1221 static CMS_ReceiptRequest *make_receipt_request(STACK *rr_to, int rr_allorfirst,
1222                                                                 STACK *rr_from)
1223         {
1224         STACK_OF(GENERAL_NAMES) *rct_to, *rct_from;
1225         CMS_ReceiptRequest *rr;
1226         rct_to = make_names_stack(rr_to);
1227         if (!rct_to)
1228                 goto err;
1229         if (rr_from)
1230                 {
1231                 rct_from = make_names_stack(rr_from);
1232                 if (!rct_from)
1233                         goto err;
1234                 }
1235         else
1236                 rct_from = NULL;
1237         rr = CMS_ReceiptRequest_create0(NULL, -1, rr_allorfirst, rct_from,
1238                                                 rct_to);
1239         return rr;
1240         err:
1241         return NULL;
1242         }
1243
1244 #endif