openssl/apps/smime.c - Issue 2072073002: Delete bundled copy of OpenSSL and replace with README.

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Issue 2072073002: Delete bundled copy of OpenSSL and replace with README. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master

Patch Set: Delete bundled copy of OpenSSL and replace with README. Created 4 years, 6 months ago

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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 withou t -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 spe cified\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) spec ified\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 (defaul t)\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 i n message for signer\n");

460 BIO_printf (bio_err, "-nosigs don't verify message signat ure\n");

461 BIO_printf (bio_err, "-noverify don't verify signers certif icate\n");

462 BIO_printf (bio_err, "-nocerts don't include signers certi ficate when signing\n");

463 BIO_printf (bio_err, "-nodetach use opaque signing\n");

464 BIO_printf (bio_err, "-noattr don't include any signed at tributes\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 s igner or recipient)\n");

472 BIO_printf (bio_err, "-keyform arg input private key format (P EM or ENGINE)\n");

473 BIO_printf (bio_err, "-out file output file\n");

474 BIO_printf (bio_err, "-outform arg output format SMIME (defaul t), 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 direct ory\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 ha rdware device.\n");

486 #endif

487 BIO_printf (bio_err, "-passin arg input file pass phrase sour ce\n");

488 BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_C HAR, 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) fo r 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 certif icate 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 }

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