source: openssl/trunk/apps/smime.c@ 808

Last change on this file since 808 was 808, checked in by dmik, 11 years ago

openssl: Merge version 1.0.0n from vendor to trunk.
File size: 22.2 KB
Line 
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
72static int save_certs(char *signerfile, STACK_OF(X509) *signers);
73static 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
85int MAIN(int, char **);
86
87int 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_DES
545 cipher = EVP_des_ede3_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;
801end:
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
826static 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
843static 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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