Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* smime.c */ |
| 2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 3 | * project. |
| 4 | */ |
| 5 | /* ==================================================================== |
| 6 | * Copyright (c) 1999-2004 The OpenSSL Project. All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in |
| 17 | * the documentation and/or other materials provided with the |
| 18 | * distribution. |
| 19 | * |
| 20 | * 3. All advertising materials mentioning features or use of this |
| 21 | * software must display the following acknowledgment: |
| 22 | * "This product includes software developed by the OpenSSL Project |
| 23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| 24 | * |
| 25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 26 | * endorse or promote products derived from this software without |
| 27 | * prior written permission. For written permission, please contact |
| 28 | * licensing@OpenSSL.org. |
| 29 | * |
| 30 | * 5. Products derived from this software may not be called "OpenSSL" |
| 31 | * nor may "OpenSSL" appear in their names without prior written |
| 32 | * permission of the OpenSSL Project. |
| 33 | * |
| 34 | * 6. Redistributions of any form whatsoever must retain the following |
| 35 | * acknowledgment: |
| 36 | * "This product includes software developed by the OpenSSL Project |
| 37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 38 | * |
| 39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 50 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 51 | * ==================================================================== |
| 52 | * |
| 53 | * This product includes cryptographic software written by Eric Young |
| 54 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 55 | * Hudson (tjh@cryptsoft.com). |
| 56 | * |
| 57 | */ |
| 58 | |
| 59 | /* S/MIME utility function */ |
| 60 | |
| 61 | #include <stdio.h> |
| 62 | #include <string.h> |
| 63 | #include "apps.h" |
| 64 | #include <openssl/crypto.h> |
| 65 | #include <openssl/pem.h> |
| 66 | #include <openssl/err.h> |
| 67 | #include <openssl/x509_vfy.h> |
| 68 | #include <openssl/x509v3.h> |
| 69 | |
| 70 | #undef PROG |
| 71 | #define PROG smime_main |
| 72 | static int save_certs(char *signerfile, STACK_OF(X509) *signers); |
| 73 | static int smime_cb(int ok, X509_STORE_CTX *ctx); |
| 74 | |
| 75 | #define SMIME_OP 0x10 |
| 76 | #define SMIME_IP 0x20 |
| 77 | #define SMIME_SIGNERS 0x40 |
| 78 | #define SMIME_ENCRYPT (1 | SMIME_OP) |
| 79 | #define SMIME_DECRYPT (2 | SMIME_IP) |
| 80 | #define SMIME_SIGN (3 | SMIME_OP | SMIME_SIGNERS) |
| 81 | #define SMIME_VERIFY (4 | SMIME_IP) |
| 82 | #define SMIME_PK7OUT (5 | SMIME_IP | SMIME_OP) |
| 83 | #define SMIME_RESIGN (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS) |
| 84 | |
| 85 | int MAIN(int, char **); |
| 86 | |
| 87 | int MAIN(int argc, char **argv) |
| 88 | { |
| 89 | ENGINE *e = NULL; |
| 90 | int operation = 0; |
| 91 | int ret = 0; |
| 92 | char **args; |
| 93 | const char *inmode = "r", *outmode = "w"; |
| 94 | char *infile = NULL, *outfile = NULL; |
| 95 | char *signerfile = NULL, *recipfile = NULL; |
| 96 | STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL; |
| 97 | char *certfile = NULL, *keyfile = NULL, *contfile=NULL; |
| 98 | const EVP_CIPHER *cipher = NULL; |
| 99 | PKCS7 *p7 = NULL; |
| 100 | X509_STORE *store = NULL; |
| 101 | X509 *cert = NULL, *recip = NULL, *signer = NULL; |
| 102 | EVP_PKEY *key = NULL; |
| 103 | STACK_OF(X509) *encerts = NULL, *other = NULL; |
| 104 | BIO *in = NULL, *out = NULL, *indata = NULL; |
| 105 | int badarg = 0; |
| 106 | int flags = PKCS7_DETACHED; |
| 107 | char *to = NULL, *from = NULL, *subject = NULL; |
| 108 | char *CAfile = NULL, *CApath = NULL; |
| 109 | char *passargin = NULL, *passin = NULL; |
| 110 | char *inrand = NULL; |
| 111 | int need_rand = 0; |
| 112 | int indef = 0; |
| 113 | const EVP_MD *sign_md = NULL; |
| 114 | int informat = FORMAT_SMIME, outformat = FORMAT_SMIME; |
| 115 | int keyform = FORMAT_PEM; |
| 116 | #ifndef OPENSSL_NO_ENGINE |
| 117 | char *engine=NULL; |
| 118 | #endif |
| 119 | |
| 120 | X509_VERIFY_PARAM *vpm = NULL; |
| 121 | |
| 122 | args = argv + 1; |
| 123 | ret = 1; |
| 124 | |
| 125 | apps_startup(); |
| 126 | |
| 127 | if (bio_err == NULL) |
| 128 | { |
| 129 | if ((bio_err = BIO_new(BIO_s_file())) != NULL) |
| 130 | BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT); |
| 131 | } |
| 132 | |
| 133 | if (!load_config(bio_err, NULL)) |
| 134 | goto end; |
| 135 | |
| 136 | while (!badarg && *args && *args[0] == '-') |
| 137 | { |
| 138 | if (!strcmp (*args, "-encrypt")) |
| 139 | operation = SMIME_ENCRYPT; |
| 140 | else if (!strcmp (*args, "-decrypt")) |
| 141 | operation = SMIME_DECRYPT; |
| 142 | else if (!strcmp (*args, "-sign")) |
| 143 | operation = SMIME_SIGN; |
| 144 | else if (!strcmp (*args, "-resign")) |
| 145 | operation = SMIME_RESIGN; |
| 146 | else if (!strcmp (*args, "-verify")) |
| 147 | operation = SMIME_VERIFY; |
| 148 | else if (!strcmp (*args, "-pk7out")) |
| 149 | operation = SMIME_PK7OUT; |
| 150 | #ifndef OPENSSL_NO_DES |
| 151 | else if (!strcmp (*args, "-des3")) |
| 152 | cipher = EVP_des_ede3_cbc(); |
| 153 | else if (!strcmp (*args, "-des")) |
| 154 | cipher = EVP_des_cbc(); |
| 155 | #endif |
| 156 | #ifndef OPENSSL_NO_SEED |
| 157 | else if (!strcmp (*args, "-seed")) |
| 158 | cipher = EVP_seed_cbc(); |
| 159 | #endif |
| 160 | #ifndef OPENSSL_NO_RC2 |
| 161 | else if (!strcmp (*args, "-rc2-40")) |
| 162 | cipher = EVP_rc2_40_cbc(); |
| 163 | else if (!strcmp (*args, "-rc2-128")) |
| 164 | cipher = EVP_rc2_cbc(); |
| 165 | else if (!strcmp (*args, "-rc2-64")) |
| 166 | cipher = EVP_rc2_64_cbc(); |
| 167 | #endif |
| 168 | #ifndef OPENSSL_NO_AES |
| 169 | else if (!strcmp(*args,"-aes128")) |
| 170 | cipher = EVP_aes_128_cbc(); |
| 171 | else if (!strcmp(*args,"-aes192")) |
| 172 | cipher = EVP_aes_192_cbc(); |
| 173 | else if (!strcmp(*args,"-aes256")) |
| 174 | cipher = EVP_aes_256_cbc(); |
| 175 | #endif |
| 176 | #ifndef OPENSSL_NO_CAMELLIA |
| 177 | else if (!strcmp(*args,"-camellia128")) |
| 178 | cipher = EVP_camellia_128_cbc(); |
| 179 | else if (!strcmp(*args,"-camellia192")) |
| 180 | cipher = EVP_camellia_192_cbc(); |
| 181 | else if (!strcmp(*args,"-camellia256")) |
| 182 | cipher = EVP_camellia_256_cbc(); |
| 183 | #endif |
| 184 | else if (!strcmp (*args, "-text")) |
| 185 | flags |= PKCS7_TEXT; |
| 186 | else if (!strcmp (*args, "-nointern")) |
| 187 | flags |= PKCS7_NOINTERN; |
| 188 | else if (!strcmp (*args, "-noverify")) |
| 189 | flags |= PKCS7_NOVERIFY; |
| 190 | else if (!strcmp (*args, "-nochain")) |
| 191 | flags |= PKCS7_NOCHAIN; |
| 192 | else if (!strcmp (*args, "-nocerts")) |
| 193 | flags |= PKCS7_NOCERTS; |
| 194 | else if (!strcmp (*args, "-noattr")) |
| 195 | flags |= PKCS7_NOATTR; |
| 196 | else if (!strcmp (*args, "-nodetach")) |
| 197 | flags &= ~PKCS7_DETACHED; |
| 198 | else if (!strcmp (*args, "-nosmimecap")) |
| 199 | flags |= PKCS7_NOSMIMECAP; |
| 200 | else if (!strcmp (*args, "-binary")) |
| 201 | flags |= PKCS7_BINARY; |
| 202 | else if (!strcmp (*args, "-nosigs")) |
| 203 | flags |= PKCS7_NOSIGS; |
| 204 | else if (!strcmp (*args, "-stream")) |
| 205 | indef = 1; |
| 206 | else if (!strcmp (*args, "-indef")) |
| 207 | indef = 1; |
| 208 | else if (!strcmp (*args, "-noindef")) |
| 209 | indef = 0; |
| 210 | else if (!strcmp (*args, "-nooldmime")) |
| 211 | flags |= PKCS7_NOOLDMIMETYPE; |
| 212 | else if (!strcmp (*args, "-crlfeol")) |
| 213 | flags |= PKCS7_CRLFEOL; |
| 214 | else if (!strcmp(*args,"-rand")) |
| 215 | { |
| 216 | if (!args[1]) |
| 217 | goto argerr; |
| 218 | args++; |
| 219 | inrand = *args; |
| 220 | need_rand = 1; |
| 221 | } |
| 222 | #ifndef OPENSSL_NO_ENGINE |
| 223 | else if (!strcmp(*args,"-engine")) |
| 224 | { |
| 225 | if (!args[1]) |
| 226 | goto argerr; |
| 227 | engine = *++args; |
| 228 | } |
| 229 | #endif |
| 230 | else if (!strcmp(*args,"-passin")) |
| 231 | { |
| 232 | if (!args[1]) |
| 233 | goto argerr; |
| 234 | passargin = *++args; |
| 235 | } |
| 236 | else if (!strcmp (*args, "-to")) |
| 237 | { |
| 238 | if (!args[1]) |
| 239 | goto argerr; |
| 240 | to = *++args; |
| 241 | } |
| 242 | else if (!strcmp (*args, "-from")) |
| 243 | { |
| 244 | if (!args[1]) |
| 245 | goto argerr; |
| 246 | from = *++args; |
| 247 | } |
| 248 | else if (!strcmp (*args, "-subject")) |
| 249 | { |
| 250 | if (!args[1]) |
| 251 | goto argerr; |
| 252 | subject = *++args; |
| 253 | } |
| 254 | else if (!strcmp (*args, "-signer")) |
| 255 | { |
| 256 | if (!args[1]) |
| 257 | goto argerr; |
| 258 | /* If previous -signer argument add signer to list */ |
| 259 | |
| 260 | if (signerfile) |
| 261 | { |
| 262 | if (!sksigners) |
| 263 | sksigners = sk_OPENSSL_STRING_new_null(); |
| 264 | sk_OPENSSL_STRING_push(sksigners, signerfile); |
| 265 | if (!keyfile) |
| 266 | keyfile = signerfile; |
| 267 | if (!skkeys) |
| 268 | skkeys = sk_OPENSSL_STRING_new_null(); |
| 269 | sk_OPENSSL_STRING_push(skkeys, keyfile); |
| 270 | keyfile = NULL; |
| 271 | } |
| 272 | signerfile = *++args; |
| 273 | } |
| 274 | else if (!strcmp (*args, "-recip")) |
| 275 | { |
| 276 | if (!args[1]) |
| 277 | goto argerr; |
| 278 | recipfile = *++args; |
| 279 | } |
| 280 | else if (!strcmp (*args, "-md")) |
| 281 | { |
| 282 | if (!args[1]) |
| 283 | goto argerr; |
| 284 | sign_md = EVP_get_digestbyname(*++args); |
| 285 | if (sign_md == NULL) |
| 286 | { |
| 287 | BIO_printf(bio_err, "Unknown digest %s\n", |
| 288 | *args); |
| 289 | goto argerr; |
| 290 | } |
| 291 | } |
| 292 | else if (!strcmp (*args, "-inkey")) |
| 293 | { |
| 294 | if (!args[1]) |
| 295 | goto argerr; |
| 296 | /* If previous -inkey arument add signer to list */ |
| 297 | if (keyfile) |
| 298 | { |
| 299 | if (!signerfile) |
| 300 | { |
| 301 | BIO_puts(bio_err, "Illegal -inkey without -signer\n"); |
| 302 | goto argerr; |
| 303 | } |
| 304 | if (!sksigners) |
| 305 | sksigners = sk_OPENSSL_STRING_new_null(); |
| 306 | sk_OPENSSL_STRING_push(sksigners, signerfile); |
| 307 | signerfile = NULL; |
| 308 | if (!skkeys) |
| 309 | skkeys = sk_OPENSSL_STRING_new_null(); |
| 310 | sk_OPENSSL_STRING_push(skkeys, keyfile); |
| 311 | } |
| 312 | keyfile = *++args; |
| 313 | } |
| 314 | else if (!strcmp (*args, "-keyform")) |
| 315 | { |
| 316 | if (!args[1]) |
| 317 | goto argerr; |
| 318 | keyform = str2fmt(*++args); |
| 319 | } |
| 320 | else if (!strcmp (*args, "-certfile")) |
| 321 | { |
| 322 | if (!args[1]) |
| 323 | goto argerr; |
| 324 | certfile = *++args; |
| 325 | } |
| 326 | else if (!strcmp (*args, "-CAfile")) |
| 327 | { |
| 328 | if (!args[1]) |
| 329 | goto argerr; |
| 330 | CAfile = *++args; |
| 331 | } |
| 332 | else if (!strcmp (*args, "-CApath")) |
| 333 | { |
| 334 | if (!args[1]) |
| 335 | goto argerr; |
| 336 | CApath = *++args; |
| 337 | } |
| 338 | else if (!strcmp (*args, "-in")) |
| 339 | { |
| 340 | if (!args[1]) |
| 341 | goto argerr; |
| 342 | infile = *++args; |
| 343 | } |
| 344 | else if (!strcmp (*args, "-inform")) |
| 345 | { |
| 346 | if (!args[1]) |
| 347 | goto argerr; |
| 348 | informat = str2fmt(*++args); |
| 349 | } |
| 350 | else if (!strcmp (*args, "-outform")) |
| 351 | { |
| 352 | if (!args[1]) |
| 353 | goto argerr; |
| 354 | outformat = str2fmt(*++args); |
| 355 | } |
| 356 | else if (!strcmp (*args, "-out")) |
| 357 | { |
| 358 | if (!args[1]) |
| 359 | goto argerr; |
| 360 | outfile = *++args; |
| 361 | } |
| 362 | else if (!strcmp (*args, "-content")) |
| 363 | { |
| 364 | if (!args[1]) |
| 365 | goto argerr; |
| 366 | contfile = *++args; |
| 367 | } |
| 368 | else if (args_verify(&args, NULL, &badarg, bio_err, &vpm)) |
| 369 | continue; |
| 370 | else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL) |
| 371 | badarg = 1; |
| 372 | args++; |
| 373 | } |
| 374 | |
| 375 | if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners)) |
| 376 | { |
| 377 | BIO_puts(bio_err, "Multiple signers or keys not allowed\n"); |
| 378 | goto argerr; |
| 379 | } |
| 380 | |
| 381 | if (operation & SMIME_SIGNERS) |
| 382 | { |
| 383 | /* Check to see if any final signer needs to be appended */ |
| 384 | if (keyfile && !signerfile) |
| 385 | { |
| 386 | BIO_puts(bio_err, "Illegal -inkey without -signer\n"); |
| 387 | goto argerr; |
| 388 | } |
| 389 | if (signerfile) |
| 390 | { |
| 391 | if (!sksigners) |
| 392 | sksigners = sk_OPENSSL_STRING_new_null(); |
| 393 | sk_OPENSSL_STRING_push(sksigners, signerfile); |
| 394 | if (!skkeys) |
| 395 | skkeys = sk_OPENSSL_STRING_new_null(); |
| 396 | if (!keyfile) |
| 397 | keyfile = signerfile; |
| 398 | sk_OPENSSL_STRING_push(skkeys, keyfile); |
| 399 | } |
| 400 | if (!sksigners) |
| 401 | { |
| 402 | BIO_printf(bio_err, "No signer certificate specified\n"); |
| 403 | badarg = 1; |
| 404 | } |
| 405 | signerfile = NULL; |
| 406 | keyfile = NULL; |
| 407 | need_rand = 1; |
| 408 | } |
| 409 | else if (operation == SMIME_DECRYPT) |
| 410 | { |
| 411 | if (!recipfile && !keyfile) |
| 412 | { |
| 413 | BIO_printf(bio_err, "No recipient certificate or key specified\n"); |
| 414 | badarg = 1; |
| 415 | } |
| 416 | } |
| 417 | else if (operation == SMIME_ENCRYPT) |
| 418 | { |
| 419 | if (!*args) |
| 420 | { |
| 421 | BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n"); |
| 422 | badarg = 1; |
| 423 | } |
| 424 | need_rand = 1; |
| 425 | } |
| 426 | else if (!operation) |
| 427 | badarg = 1; |
| 428 | |
| 429 | if (badarg) |
| 430 | { |
| 431 | argerr: |
| 432 | BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n"); |
| 433 | BIO_printf (bio_err, "where options are\n"); |
| 434 | BIO_printf (bio_err, "-encrypt encrypt message\n"); |
| 435 | BIO_printf (bio_err, "-decrypt decrypt encrypted message\n"); |
| 436 | BIO_printf (bio_err, "-sign sign message\n"); |
| 437 | BIO_printf (bio_err, "-verify verify signed message\n"); |
| 438 | BIO_printf (bio_err, "-pk7out output PKCS#7 structure\n"); |
| 439 | #ifndef OPENSSL_NO_DES |
| 440 | BIO_printf (bio_err, "-des3 encrypt with triple DES\n"); |
| 441 | BIO_printf (bio_err, "-des encrypt with DES\n"); |
| 442 | #endif |
| 443 | #ifndef OPENSSL_NO_SEED |
| 444 | BIO_printf (bio_err, "-seed encrypt with SEED\n"); |
| 445 | #endif |
| 446 | #ifndef OPENSSL_NO_RC2 |
| 447 | BIO_printf (bio_err, "-rc2-40 encrypt with RC2-40 (default)\n"); |
| 448 | BIO_printf (bio_err, "-rc2-64 encrypt with RC2-64\n"); |
| 449 | BIO_printf (bio_err, "-rc2-128 encrypt with RC2-128\n"); |
| 450 | #endif |
| 451 | #ifndef OPENSSL_NO_AES |
| 452 | BIO_printf (bio_err, "-aes128, -aes192, -aes256\n"); |
| 453 | BIO_printf (bio_err, " encrypt PEM output with cbc aes\n"); |
| 454 | #endif |
| 455 | #ifndef OPENSSL_NO_CAMELLIA |
| 456 | BIO_printf (bio_err, "-camellia128, -camellia192, -camellia256\n"); |
| 457 | BIO_printf (bio_err, " encrypt PEM output with cbc camellia\n"); |
| 458 | #endif |
| 459 | BIO_printf (bio_err, "-nointern don't search certificates in message for signer\n"); |
| 460 | BIO_printf (bio_err, "-nosigs don't verify message signature\n"); |
| 461 | BIO_printf (bio_err, "-noverify don't verify signers certificate\n"); |
| 462 | BIO_printf (bio_err, "-nocerts don't include signers certificate when signing\n"); |
| 463 | BIO_printf (bio_err, "-nodetach use opaque signing\n"); |
| 464 | BIO_printf (bio_err, "-noattr don't include any signed attributes\n"); |
| 465 | BIO_printf (bio_err, "-binary don't translate message to text\n"); |
| 466 | BIO_printf (bio_err, "-certfile file other certificates file\n"); |
| 467 | BIO_printf (bio_err, "-signer file signer certificate file\n"); |
| 468 | BIO_printf (bio_err, "-recip file recipient certificate file for decryption\n"); |
| 469 | BIO_printf (bio_err, "-in file input file\n"); |
| 470 | BIO_printf (bio_err, "-inform arg input format SMIME (default), PEM or DER\n"); |
| 471 | BIO_printf (bio_err, "-inkey file input private key (if not signer or recipient)\n"); |
| 472 | BIO_printf (bio_err, "-keyform arg input private key format (PEM or ENGINE)\n"); |
| 473 | BIO_printf (bio_err, "-out file output file\n"); |
| 474 | BIO_printf (bio_err, "-outform arg output format SMIME (default), PEM or DER\n"); |
| 475 | BIO_printf (bio_err, "-content file supply or override content for detached signature\n"); |
| 476 | BIO_printf (bio_err, "-to addr to address\n"); |
| 477 | BIO_printf (bio_err, "-from ad from address\n"); |
| 478 | BIO_printf (bio_err, "-subject s subject\n"); |
| 479 | BIO_printf (bio_err, "-text include or delete text MIME headers\n"); |
| 480 | BIO_printf (bio_err, "-CApath dir trusted certificates directory\n"); |
| 481 | BIO_printf (bio_err, "-CAfile file trusted certificates file\n"); |
| 482 | BIO_printf (bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n"); |
| 483 | BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n"); |
| 484 | #ifndef OPENSSL_NO_ENGINE |
| 485 | BIO_printf (bio_err, "-engine e use engine e, possibly a hardware device.\n"); |
| 486 | #endif |
| 487 | BIO_printf (bio_err, "-passin arg input file pass phrase source\n"); |
| 488 | BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); |
| 489 | BIO_printf(bio_err, " load the file (or the files in the directory) into\n"); |
| 490 | BIO_printf(bio_err, " the random number generator\n"); |
| 491 | BIO_printf (bio_err, "cert.pem recipient certificate(s) for encryption\n"); |
| 492 | goto end; |
| 493 | } |
| 494 | |
| 495 | #ifndef OPENSSL_NO_ENGINE |
| 496 | e = setup_engine(bio_err, engine, 0); |
| 497 | #endif |
| 498 | |
| 499 | if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) |
| 500 | { |
| 501 | BIO_printf(bio_err, "Error getting password\n"); |
| 502 | goto end; |
| 503 | } |
| 504 | |
| 505 | if (need_rand) |
| 506 | { |
| 507 | app_RAND_load_file(NULL, bio_err, (inrand != NULL)); |
| 508 | if (inrand != NULL) |
| 509 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", |
| 510 | app_RAND_load_files(inrand)); |
| 511 | } |
| 512 | |
| 513 | ret = 2; |
| 514 | |
| 515 | if (!(operation & SMIME_SIGNERS)) |
| 516 | flags &= ~PKCS7_DETACHED; |
| 517 | |
| 518 | if (operation & SMIME_OP) |
| 519 | { |
| 520 | if (outformat == FORMAT_ASN1) |
| 521 | outmode = "wb"; |
| 522 | } |
| 523 | else |
| 524 | { |
| 525 | if (flags & PKCS7_BINARY) |
| 526 | outmode = "wb"; |
| 527 | } |
| 528 | |
| 529 | if (operation & SMIME_IP) |
| 530 | { |
| 531 | if (informat == FORMAT_ASN1) |
| 532 | inmode = "rb"; |
| 533 | } |
| 534 | else |
| 535 | { |
| 536 | if (flags & PKCS7_BINARY) |
| 537 | inmode = "rb"; |
| 538 | } |
| 539 | |
| 540 | if (operation == SMIME_ENCRYPT) |
| 541 | { |
| 542 | if (!cipher) |
| 543 | { |
| 544 | #ifndef OPENSSL_NO_RC2 |
| 545 | cipher = EVP_rc2_40_cbc(); |
| 546 | #else |
| 547 | BIO_printf(bio_err, "No cipher selected\n"); |
| 548 | goto end; |
| 549 | #endif |
| 550 | } |
| 551 | encerts = sk_X509_new_null(); |
| 552 | while (*args) |
| 553 | { |
| 554 | if (!(cert = load_cert(bio_err,*args,FORMAT_PEM, |
| 555 | NULL, e, "recipient certificate file"))) |
| 556 | { |
| 557 | #if 0 /* An appropriate message is already printed */ |
| 558 | BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args); |
| 559 | #endif |
| 560 | goto end; |
| 561 | } |
| 562 | sk_X509_push(encerts, cert); |
| 563 | cert = NULL; |
| 564 | args++; |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | if (certfile) |
| 569 | { |
| 570 | if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL, |
| 571 | e, "certificate file"))) |
| 572 | { |
| 573 | ERR_print_errors(bio_err); |
| 574 | goto end; |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | if (recipfile && (operation == SMIME_DECRYPT)) |
| 579 | { |
| 580 | if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL, |
| 581 | e, "recipient certificate file"))) |
| 582 | { |
| 583 | ERR_print_errors(bio_err); |
| 584 | goto end; |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | if (operation == SMIME_DECRYPT) |
| 589 | { |
| 590 | if (!keyfile) |
| 591 | keyfile = recipfile; |
| 592 | } |
| 593 | else if (operation == SMIME_SIGN) |
| 594 | { |
| 595 | if (!keyfile) |
| 596 | keyfile = signerfile; |
| 597 | } |
| 598 | else keyfile = NULL; |
| 599 | |
| 600 | if (keyfile) |
| 601 | { |
| 602 | key = load_key(bio_err, keyfile, keyform, 0, passin, e, |
| 603 | "signing key file"); |
| 604 | if (!key) |
| 605 | goto end; |
| 606 | } |
| 607 | |
| 608 | if (infile) |
| 609 | { |
| 610 | if (!(in = BIO_new_file(infile, inmode))) |
| 611 | { |
| 612 | BIO_printf (bio_err, |
| 613 | "Can't open input file %s\n", infile); |
| 614 | goto end; |
| 615 | } |
| 616 | } |
| 617 | else |
| 618 | in = BIO_new_fp(stdin, BIO_NOCLOSE); |
| 619 | |
| 620 | if (operation & SMIME_IP) |
| 621 | { |
| 622 | if (informat == FORMAT_SMIME) |
| 623 | p7 = SMIME_read_PKCS7(in, &indata); |
| 624 | else if (informat == FORMAT_PEM) |
| 625 | p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL); |
| 626 | else if (informat == FORMAT_ASN1) |
| 627 | p7 = d2i_PKCS7_bio(in, NULL); |
| 628 | else |
| 629 | { |
| 630 | BIO_printf(bio_err, "Bad input format for PKCS#7 file\n"); |
| 631 | goto end; |
| 632 | } |
| 633 | |
| 634 | if (!p7) |
| 635 | { |
| 636 | BIO_printf(bio_err, "Error reading S/MIME message\n"); |
| 637 | goto end; |
| 638 | } |
| 639 | if (contfile) |
| 640 | { |
| 641 | BIO_free(indata); |
| 642 | if (!(indata = BIO_new_file(contfile, "rb"))) |
| 643 | { |
| 644 | BIO_printf(bio_err, "Can't read content file %s\n", contfile); |
| 645 | goto end; |
| 646 | } |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | if (outfile) |
| 651 | { |
| 652 | if (!(out = BIO_new_file(outfile, outmode))) |
| 653 | { |
| 654 | BIO_printf (bio_err, |
| 655 | "Can't open output file %s\n", outfile); |
| 656 | goto end; |
| 657 | } |
| 658 | } |
| 659 | else |
| 660 | { |
| 661 | out = BIO_new_fp(stdout, BIO_NOCLOSE); |
| 662 | #ifdef OPENSSL_SYS_VMS |
| 663 | { |
| 664 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
| 665 | out = BIO_push(tmpbio, out); |
| 666 | } |
| 667 | #endif |
| 668 | } |
| 669 | |
| 670 | if (operation == SMIME_VERIFY) |
| 671 | { |
| 672 | if (!(store = setup_verify(bio_err, CAfile, CApath))) |
| 673 | goto end; |
| 674 | X509_STORE_set_verify_cb(store, smime_cb); |
| 675 | if (vpm) |
| 676 | X509_STORE_set1_param(store, vpm); |
| 677 | } |
| 678 | |
| 679 | |
| 680 | ret = 3; |
| 681 | |
| 682 | if (operation == SMIME_ENCRYPT) |
| 683 | { |
| 684 | if (indef) |
| 685 | flags |= PKCS7_STREAM; |
| 686 | p7 = PKCS7_encrypt(encerts, in, cipher, flags); |
| 687 | } |
| 688 | else if (operation & SMIME_SIGNERS) |
| 689 | { |
| 690 | int i; |
| 691 | /* If detached data content we only enable streaming if |
| 692 | * S/MIME output format. |
| 693 | */ |
| 694 | if (operation == SMIME_SIGN) |
| 695 | { |
| 696 | if (flags & PKCS7_DETACHED) |
| 697 | { |
| 698 | if (outformat == FORMAT_SMIME) |
| 699 | flags |= PKCS7_STREAM; |
| 700 | } |
| 701 | else if (indef) |
| 702 | flags |= PKCS7_STREAM; |
| 703 | flags |= PKCS7_PARTIAL; |
| 704 | p7 = PKCS7_sign(NULL, NULL, other, in, flags); |
| 705 | if (!p7) |
| 706 | goto end; |
| 707 | } |
| 708 | else |
| 709 | flags |= PKCS7_REUSE_DIGEST; |
| 710 | for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) |
| 711 | { |
| 712 | signerfile = sk_OPENSSL_STRING_value(sksigners, i); |
| 713 | keyfile = sk_OPENSSL_STRING_value(skkeys, i); |
| 714 | signer = load_cert(bio_err, signerfile,FORMAT_PEM, NULL, |
| 715 | e, "signer certificate"); |
| 716 | if (!signer) |
| 717 | goto end; |
| 718 | key = load_key(bio_err, keyfile, keyform, 0, passin, e, |
| 719 | "signing key file"); |
| 720 | if (!key) |
| 721 | goto end; |
| 722 | if (!PKCS7_sign_add_signer(p7, signer, key, |
| 723 | sign_md, flags)) |
| 724 | goto end; |
| 725 | X509_free(signer); |
| 726 | signer = NULL; |
| 727 | EVP_PKEY_free(key); |
| 728 | key = NULL; |
| 729 | } |
| 730 | /* If not streaming or resigning finalize structure */ |
| 731 | if ((operation == SMIME_SIGN) && !(flags & PKCS7_STREAM)) |
| 732 | { |
| 733 | if (!PKCS7_final(p7, in, flags)) |
| 734 | goto end; |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | if (!p7) |
| 739 | { |
| 740 | BIO_printf(bio_err, "Error creating PKCS#7 structure\n"); |
| 741 | goto end; |
| 742 | } |
| 743 | |
| 744 | ret = 4; |
| 745 | if (operation == SMIME_DECRYPT) |
| 746 | { |
| 747 | if (!PKCS7_decrypt(p7, key, recip, out, flags)) |
| 748 | { |
| 749 | BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n"); |
| 750 | goto end; |
| 751 | } |
| 752 | } |
| 753 | else if (operation == SMIME_VERIFY) |
| 754 | { |
| 755 | STACK_OF(X509) *signers; |
| 756 | if (PKCS7_verify(p7, other, store, indata, out, flags)) |
| 757 | BIO_printf(bio_err, "Verification successful\n"); |
| 758 | else |
| 759 | { |
| 760 | BIO_printf(bio_err, "Verification failure\n"); |
| 761 | goto end; |
| 762 | } |
| 763 | signers = PKCS7_get0_signers(p7, other, flags); |
| 764 | if (!save_certs(signerfile, signers)) |
| 765 | { |
| 766 | BIO_printf(bio_err, "Error writing signers to %s\n", |
| 767 | signerfile); |
| 768 | ret = 5; |
| 769 | goto end; |
| 770 | } |
| 771 | sk_X509_free(signers); |
| 772 | } |
| 773 | else if (operation == SMIME_PK7OUT) |
| 774 | PEM_write_bio_PKCS7(out, p7); |
| 775 | else |
| 776 | { |
| 777 | if (to) |
| 778 | BIO_printf(out, "To: %s\n", to); |
| 779 | if (from) |
| 780 | BIO_printf(out, "From: %s\n", from); |
| 781 | if (subject) |
| 782 | BIO_printf(out, "Subject: %s\n", subject); |
| 783 | if (outformat == FORMAT_SMIME) |
| 784 | { |
| 785 | if (operation == SMIME_RESIGN) |
| 786 | SMIME_write_PKCS7(out, p7, indata, flags); |
| 787 | else |
| 788 | SMIME_write_PKCS7(out, p7, in, flags); |
| 789 | } |
| 790 | else if (outformat == FORMAT_PEM) |
| 791 | PEM_write_bio_PKCS7_stream(out, p7, in, flags); |
| 792 | else if (outformat == FORMAT_ASN1) |
| 793 | i2d_PKCS7_bio_stream(out,p7, in, flags); |
| 794 | else |
| 795 | { |
| 796 | BIO_printf(bio_err, "Bad output format for PKCS#7 file\n"); |
| 797 | goto end; |
| 798 | } |
| 799 | } |
| 800 | ret = 0; |
| 801 | end: |
| 802 | if (need_rand) |
| 803 | app_RAND_write_file(NULL, bio_err); |
| 804 | if (ret) ERR_print_errors(bio_err); |
| 805 | sk_X509_pop_free(encerts, X509_free); |
| 806 | sk_X509_pop_free(other, X509_free); |
| 807 | if (vpm) |
| 808 | X509_VERIFY_PARAM_free(vpm); |
| 809 | if (sksigners) |
| 810 | sk_OPENSSL_STRING_free(sksigners); |
| 811 | if (skkeys) |
| 812 | sk_OPENSSL_STRING_free(skkeys); |
| 813 | X509_STORE_free(store); |
| 814 | X509_free(cert); |
| 815 | X509_free(recip); |
| 816 | X509_free(signer); |
| 817 | EVP_PKEY_free(key); |
| 818 | PKCS7_free(p7); |
| 819 | BIO_free(in); |
| 820 | BIO_free(indata); |
| 821 | BIO_free_all(out); |
| 822 | if (passin) OPENSSL_free(passin); |
| 823 | return (ret); |
| 824 | } |
| 825 | |
| 826 | static int save_certs(char *signerfile, STACK_OF(X509) *signers) |
| 827 | { |
| 828 | int i; |
| 829 | BIO *tmp; |
| 830 | if (!signerfile) |
| 831 | return 1; |
| 832 | tmp = BIO_new_file(signerfile, "w"); |
| 833 | if (!tmp) return 0; |
| 834 | for(i = 0; i < sk_X509_num(signers); i++) |
| 835 | PEM_write_bio_X509(tmp, sk_X509_value(signers, i)); |
| 836 | BIO_free(tmp); |
| 837 | return 1; |
| 838 | } |
| 839 | |
| 840 | |
| 841 | /* Minimal callback just to output policy info (if any) */ |
| 842 | |
| 843 | static int smime_cb(int ok, X509_STORE_CTX *ctx) |
| 844 | { |
| 845 | int error; |
| 846 | |
| 847 | error = X509_STORE_CTX_get_error(ctx); |
| 848 | |
| 849 | if ((error != X509_V_ERR_NO_EXPLICIT_POLICY) |
| 850 | && ((error != X509_V_OK) || (ok != 2))) |
| 851 | return ok; |
| 852 | |
| 853 | policies_print(NULL, ctx); |
| 854 | |
| 855 | return ok; |
| 856 | |
| 857 | } |