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Import OpenSSL-0.9.8f.
[dragonfly.git] / crypto / openssl-0.9 / apps / smime.c
blobce8a1cbecb75ff4ef346b8347fc07c567457c35c
1 /* smime.c */
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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_ENCRYPT (1 | SMIME_OP)
77 #define SMIME_DECRYPT 2
78 #define SMIME_SIGN (3 | SMIME_OP)
79 #define SMIME_VERIFY 4
80 #define SMIME_PK7OUT 5
81
82 int MAIN(int, char **);
83
84 int MAIN(int argc, char **argv)
85 {
86 ENGINE *e = NULL;
87 int operation = 0;
88 int ret = 0;
89 char **args;
90 const char *inmode = "r", *outmode = "w";
91 char *infile = NULL, *outfile = NULL;
92 char *signerfile = NULL, *recipfile = NULL;
93 char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
94 const EVP_CIPHER *cipher = NULL;
95 PKCS7 *p7 = NULL;
96 X509_STORE *store = NULL;
97 X509 *cert = NULL, *recip = NULL, *signer = NULL;
98 EVP_PKEY *key = NULL;
99 STACK_OF(X509) *encerts = NULL, *other = NULL;
100 BIO *in = NULL, *out = NULL, *indata = NULL;
101 int badarg = 0;
102 int flags = PKCS7_DETACHED;
103 char *to = NULL, *from = NULL, *subject = NULL;
104 char *CAfile = NULL, *CApath = NULL;
105 char *passargin = NULL, *passin = NULL;
106 char *inrand = NULL;
107 int need_rand = 0;
108 int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
109 int keyform = FORMAT_PEM;
110 #ifndef OPENSSL_NO_ENGINE
111 char *engine=NULL;
112 #endif
113
114 X509_VERIFY_PARAM *vpm = NULL;
115
116 args = argv + 1;
117 ret = 1;
118
119 apps_startup();
120
121 if (bio_err == NULL)
122 {
123 if ((bio_err = BIO_new(BIO_s_file())) != NULL)
124 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
125 }
126
127 if (!load_config(bio_err, NULL))
128 goto end;
129
130 while (!badarg && *args && *args[0] == '-')
131 {
132 if (!strcmp (*args, "-encrypt"))
133 operation = SMIME_ENCRYPT;
134 else if (!strcmp (*args, "-decrypt"))
135 operation = SMIME_DECRYPT;
136 else if (!strcmp (*args, "-sign"))
137 operation = SMIME_SIGN;
138 else if (!strcmp (*args, "-verify"))
139 operation = SMIME_VERIFY;
140 else if (!strcmp (*args, "-pk7out"))
141 operation = SMIME_PK7OUT;
142 #ifndef OPENSSL_NO_DES
143 else if (!strcmp (*args, "-des3"))
144 cipher = EVP_des_ede3_cbc();
145 else if (!strcmp (*args, "-des"))
146 cipher = EVP_des_cbc();
147 #endif
148 #ifndef OPENSSL_NO_SEED
149 else if (!strcmp (*args, "-seed"))
150 cipher = EVP_seed_cbc();
151 #endif
152 #ifndef OPENSSL_NO_RC2
153 else if (!strcmp (*args, "-rc2-40"))
154 cipher = EVP_rc2_40_cbc();
155 else if (!strcmp (*args, "-rc2-128"))
156 cipher = EVP_rc2_cbc();
157 else if (!strcmp (*args, "-rc2-64"))
158 cipher = EVP_rc2_64_cbc();
159 #endif
160 #ifndef OPENSSL_NO_AES
161 else if (!strcmp(*args,"-aes128"))
162 cipher = EVP_aes_128_cbc();
163 else if (!strcmp(*args,"-aes192"))
164 cipher = EVP_aes_192_cbc();
165 else if (!strcmp(*args,"-aes256"))
166 cipher = EVP_aes_256_cbc();
167 #endif
168 #ifndef OPENSSL_NO_CAMELLIA
169 else if (!strcmp(*args,"-camellia128"))
170 cipher = EVP_camellia_128_cbc();
171 else if (!strcmp(*args,"-camellia192"))
172 cipher = EVP_camellia_192_cbc();
173 else if (!strcmp(*args,"-camellia256"))
174 cipher = EVP_camellia_256_cbc();
175 #endif
176 else if (!strcmp (*args, "-text"))
177 flags |= PKCS7_TEXT;
178 else if (!strcmp (*args, "-nointern"))
179 flags |= PKCS7_NOINTERN;
180 else if (!strcmp (*args, "-noverify"))
181 flags |= PKCS7_NOVERIFY;
182 else if (!strcmp (*args, "-nochain"))
183 flags |= PKCS7_NOCHAIN;
184 else if (!strcmp (*args, "-nocerts"))
185 flags |= PKCS7_NOCERTS;
186 else if (!strcmp (*args, "-noattr"))
187 flags |= PKCS7_NOATTR;
188 else if (!strcmp (*args, "-nodetach"))
189 flags &= ~PKCS7_DETACHED;
190 else if (!strcmp (*args, "-nosmimecap"))
191 flags |= PKCS7_NOSMIMECAP;
192 else if (!strcmp (*args, "-binary"))
193 flags |= PKCS7_BINARY;
194 else if (!strcmp (*args, "-nosigs"))
195 flags |= PKCS7_NOSIGS;
196 else if (!strcmp (*args, "-nooldmime"))
197 flags |= PKCS7_NOOLDMIMETYPE;
198 else if (!strcmp (*args, "-crlfeol"))
199 flags |= PKCS7_CRLFEOL;
200 else if (!strcmp(*args,"-rand"))
201 {
202 if (args[1])
203 {
204 args++;
205 inrand = *args;
206 }
207 else
208 badarg = 1;
209 need_rand = 1;
210 }
211 #ifndef OPENSSL_NO_ENGINE
212 else if (!strcmp(*args,"-engine"))
213 {
214 if (args[1])
215 {
216 args++;
217 engine = *args;
218 }
219 else badarg = 1;
220 }
221 #endif
222 else if (!strcmp(*args,"-passin"))
223 {
224 if (args[1])
225 {
226 args++;
227 passargin = *args;
228 }
229 else
230 badarg = 1;
231 }
232 else if (!strcmp (*args, "-to"))
233 {
234 if (args[1])
235 {
236 args++;
237 to = *args;
238 }
239 else
240 badarg = 1;
241 }
242 else if (!strcmp (*args, "-from"))
243 {
244 if (args[1])
245 {
246 args++;
247 from = *args;
248 }
249 else badarg = 1;
250 }
251 else if (!strcmp (*args, "-subject"))
252 {
253 if (args[1])
254 {
255 args++;
256 subject = *args;
257 }
258 else
259 badarg = 1;
260 }
261 else if (!strcmp (*args, "-signer"))
262 {
263 if (args[1])
264 {
265 args++;
266 signerfile = *args;
267 }
268 else
269 badarg = 1;
270 }
271 else if (!strcmp (*args, "-recip"))
272 {
273 if (args[1])
274 {
275 args++;
276 recipfile = *args;
277 }
278 else badarg = 1;
279 }
280 else if (!strcmp (*args, "-inkey"))
281 {
282 if (args[1])
283 {
284 args++;
285 keyfile = *args;
286 }
287 else
288 badarg = 1;
289 }
290 else if (!strcmp (*args, "-keyform"))
291 {
292 if (args[1])
293 {
294 args++;
295 keyform = str2fmt(*args);
296 }
297 else
298 badarg = 1;
299 }
300 else if (!strcmp (*args, "-certfile"))
301 {
302 if (args[1])
303 {
304 args++;
305 certfile = *args;
306 }
307 else
308 badarg = 1;
309 }
310 else if (!strcmp (*args, "-CAfile"))
311 {
312 if (args[1])
313 {
314 args++;
315 CAfile = *args;
316 }
317 else
318 badarg = 1;
319 }
320 else if (!strcmp (*args, "-CApath"))
321 {
322 if (args[1])
323 {
324 args++;
325 CApath = *args;
326 }
327 else
328 badarg = 1;
329 }
330 else if (!strcmp (*args, "-in"))
331 {
332 if (args[1])
333 {
334 args++;
335 infile = *args;
336 }
337 else
338 badarg = 1;
339 }
340 else if (!strcmp (*args, "-inform"))
341 {
342 if (args[1])
343 {
344 args++;
345 informat = str2fmt(*args);
346 }
347 else
348 badarg = 1;
349 }
350 else if (!strcmp (*args, "-outform"))
351 {
352 if (args[1])
353 {
354 args++;
355 outformat = str2fmt(*args);
356 }
357 else
358 badarg = 1;
359 }
360 else if (!strcmp (*args, "-out"))
361 {
362 if (args[1])
363 {
364 args++;
365 outfile = *args;
366 }
367 else
368 badarg = 1;
369 }
370 else if (!strcmp (*args, "-content"))
371 {
372 if (args[1])
373 {
374 args++;
375 contfile = *args;
376 }
377 else
378 badarg = 1;
379 }
380 else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
381 continue;
382 else
383 badarg = 1;
384 args++;
385 }
386
387
388 if (operation == SMIME_SIGN)
389 {
390 if (!signerfile)
391 {
392 BIO_printf(bio_err, "No signer certificate specified\n");
393 badarg = 1;
394 }
395 need_rand = 1;
396 }
397 else if (operation == SMIME_DECRYPT)
398 {
399 if (!recipfile && !keyfile)
400 {
401 BIO_printf(bio_err, "No recipient certificate or key specified\n");
402 badarg = 1;
403 }
404 }
405 else if (operation == SMIME_ENCRYPT)
406 {
407 if (!*args)
408 {
409 BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
410 badarg = 1;
411 }
412 need_rand = 1;
413 }
414 else if (!operation)
415 badarg = 1;
416
417 if (badarg)
418 {
419 BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
420 BIO_printf (bio_err, "where options are\n");
421 BIO_printf (bio_err, "-encrypt encrypt message\n");
422 BIO_printf (bio_err, "-decrypt decrypt encrypted message\n");
423 BIO_printf (bio_err, "-sign sign message\n");
424 BIO_printf (bio_err, "-verify verify signed message\n");
425 BIO_printf (bio_err, "-pk7out output PKCS#7 structure\n");
426 #ifndef OPENSSL_NO_DES
427 BIO_printf (bio_err, "-des3 encrypt with triple DES\n");
428 BIO_printf (bio_err, "-des encrypt with DES\n");
429 #endif
430 #ifndef OPENSSL_NO_SEED
431 BIO_printf (bio_err, "-seed encrypt with SEED\n");
432 #endif
433 #ifndef OPENSSL_NO_RC2
434 BIO_printf (bio_err, "-rc2-40 encrypt with RC2-40 (default)\n");
435 BIO_printf (bio_err, "-rc2-64 encrypt with RC2-64\n");
436 BIO_printf (bio_err, "-rc2-128 encrypt with RC2-128\n");
437 #endif
438 #ifndef OPENSSL_NO_AES
439 BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");
440 BIO_printf (bio_err, " encrypt PEM output with cbc aes\n");
441 #endif
442 #ifndef OPENSSL_NO_CAMELLIA
443 BIO_printf (bio_err, "-camellia128, -camellia192, -camellia256\n");
444 BIO_printf (bio_err, " encrypt PEM output with cbc camellia\n");
445 #endif
446 BIO_printf (bio_err, "-nointern don't search certificates in message for signer\n");
447 BIO_printf (bio_err, "-nosigs don't verify message signature\n");
448 BIO_printf (bio_err, "-noverify don't verify signers certificate\n");
449 BIO_printf (bio_err, "-nocerts don't include signers certificate when signing\n");
450 BIO_printf (bio_err, "-nodetach use opaque signing\n");
451 BIO_printf (bio_err, "-noattr don't include any signed attributes\n");
452 BIO_printf (bio_err, "-binary don't translate message to text\n");
453 BIO_printf (bio_err, "-certfile file other certificates file\n");
454 BIO_printf (bio_err, "-signer file signer certificate file\n");
455 BIO_printf (bio_err, "-recip file recipient certificate file for decryption\n");
456 BIO_printf (bio_err, "-in file input file\n");
457 BIO_printf (bio_err, "-inform arg input format SMIME (default), PEM or DER\n");
458 BIO_printf (bio_err, "-inkey file input private key (if not signer or recipient)\n");
459 BIO_printf (bio_err, "-keyform arg input private key format (PEM or ENGINE)\n");
460 BIO_printf (bio_err, "-out file output file\n");
461 BIO_printf (bio_err, "-outform arg output format SMIME (default), PEM or DER\n");
462 BIO_printf (bio_err, "-content file supply or override content for detached signature\n");
463 BIO_printf (bio_err, "-to addr to address\n");
464 BIO_printf (bio_err, "-from ad from address\n");
465 BIO_printf (bio_err, "-subject s subject\n");
466 BIO_printf (bio_err, "-text include or delete text MIME headers\n");
467 BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");
468 BIO_printf (bio_err, "-CAfile file trusted certificates file\n");
469 BIO_printf (bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n");
470 BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
471 #ifndef OPENSSL_NO_ENGINE
472 BIO_printf (bio_err, "-engine e use engine e, possibly a hardware device.\n");
473 #endif
474 BIO_printf (bio_err, "-passin arg input file pass phrase source\n");
475 BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
476 BIO_printf(bio_err, " load the file (or the files in the directory) into\n");
477 BIO_printf(bio_err, " the random number generator\n");
478 BIO_printf (bio_err, "cert.pem recipient certificate(s) for encryption\n");
479 goto end;
480 }
481
482 #ifndef OPENSSL_NO_ENGINE
483 e = setup_engine(bio_err, engine, 0);
484 #endif
485
486 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))
487 {
488 BIO_printf(bio_err, "Error getting password\n");
489 goto end;
490 }
491
492 if (need_rand)
493 {
494 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
495 if (inrand != NULL)
496 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
497 app_RAND_load_files(inrand));
498 }
499
500 ret = 2;
501
502 if (operation != SMIME_SIGN)
503 flags &= ~PKCS7_DETACHED;
504
505 if (operation & SMIME_OP)
506 {
507 if (flags & PKCS7_BINARY)
508 inmode = "rb";
509 if (outformat == FORMAT_ASN1)
510 outmode = "wb";
511 }
512 else
513 {
514 if (flags & PKCS7_BINARY)
515 outmode = "wb";
516 if (informat == FORMAT_ASN1)
517 inmode = "rb";
518 }
519
520 if (operation == SMIME_ENCRYPT)
521 {
522 if (!cipher)
523 {
524 #ifndef OPENSSL_NO_RC2
525 cipher = EVP_rc2_40_cbc();
526 #else
527 BIO_printf(bio_err, "No cipher selected\n");
528 goto end;
529 #endif
530 }
531 encerts = sk_X509_new_null();
532 while (*args)
533 {
534 if (!(cert = load_cert(bio_err,*args,FORMAT_PEM,
535 NULL, e, "recipient certificate file")))
536 {
537 #if 0 /* An appropriate message is already printed */
538 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
539 #endif
540 goto end;
541 }
542 sk_X509_push(encerts, cert);
543 cert = NULL;
544 args++;
545 }
546 }
547
548 if (signerfile && (operation == SMIME_SIGN))
549 {
550 if (!(signer = load_cert(bio_err,signerfile,FORMAT_PEM, NULL,
551 e, "signer certificate")))
552 {
553 #if 0 /* An appropri message has already been printed */
554 BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
555 #endif
556 goto end;
557 }
558 }
559
560 if (certfile)
561 {
562 if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
563 e, "certificate file")))
564 {
565 #if 0 /* An appropriate message has already been printed */
566 BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
567 #endif
568 ERR_print_errors(bio_err);
569 goto end;
570 }
571 }
572
573 if (recipfile && (operation == SMIME_DECRYPT))
574 {
575 if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
576 e, "recipient certificate file")))
577 {
578 #if 0 /* An appropriate message has alrady been printed */
579 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
580 #endif
581 ERR_print_errors(bio_err);
582 goto end;
583 }
584 }
585
586 if (operation == SMIME_DECRYPT)
587 {
588 if (!keyfile)
589 keyfile = recipfile;
590 }
591 else if (operation == SMIME_SIGN)
592 {
593 if (!keyfile)
594 keyfile = signerfile;
595 }
596 else keyfile = NULL;
597
598 if (keyfile)
599 {
600 key = load_key(bio_err, keyfile, keyform, 0, passin, e,
601 "signing key file");
602 if (!key)
603 goto end;
604 }
605
606 if (infile)
607 {
608 if (!(in = BIO_new_file(infile, inmode)))
609 {
610 BIO_printf (bio_err,
611 "Can't open input file %s\n", infile);
612 goto end;
613 }
614 }
615 else
616 in = BIO_new_fp(stdin, BIO_NOCLOSE);
617
618 if (outfile)
619 {
620 if (!(out = BIO_new_file(outfile, outmode)))
621 {
622 BIO_printf (bio_err,
623 "Can't open output file %s\n", outfile);
624 goto end;
625 }
626 }
627 else
628 {
629 out = BIO_new_fp(stdout, BIO_NOCLOSE);
630 #ifdef OPENSSL_SYS_VMS
631 {
632 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
633 out = BIO_push(tmpbio, out);
634 }
635 #endif
636 }
637
638 if (operation == SMIME_VERIFY)
639 {
640 if (!(store = setup_verify(bio_err, CAfile, CApath)))
641 goto end;
642 X509_STORE_set_verify_cb_func(store, smime_cb);
643 if (vpm)
644 X509_STORE_set1_param(store, vpm);
645 }
646
647
648 ret = 3;
649
650 if (operation == SMIME_ENCRYPT)
651 p7 = PKCS7_encrypt(encerts, in, cipher, flags);
652 else if (operation == SMIME_SIGN)
653 {
654 /* If detached data and SMIME output enable partial
655 * signing.
656 */
657 if ((flags & PKCS7_DETACHED) && (outformat == FORMAT_SMIME))
658 flags |= PKCS7_STREAM;
659 p7 = PKCS7_sign(signer, key, other, in, flags);
660 }
661 else
662 {
663 if (informat == FORMAT_SMIME)
664 p7 = SMIME_read_PKCS7(in, &indata);
665 else if (informat == FORMAT_PEM)
666 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
667 else if (informat == FORMAT_ASN1)
668 p7 = d2i_PKCS7_bio(in, NULL);
669 else
670 {
671 BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
672 goto end;
673 }
674
675 if (!p7)
676 {
677 BIO_printf(bio_err, "Error reading S/MIME message\n");
678 goto end;
679 }
680 if (contfile)
681 {
682 BIO_free(indata);
683 if (!(indata = BIO_new_file(contfile, "rb")))
684 {
685 BIO_printf(bio_err, "Can't read content file %s\n", contfile);
686 goto end;
687 }
688 }
689 }
690
691 if (!p7)
692 {
693 BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
694 goto end;
695 }
696
697 ret = 4;
698 if (operation == SMIME_DECRYPT)
699 {
700 if (!PKCS7_decrypt(p7, key, recip, out, flags))
701 {
702 BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
703 goto end;
704 }
705 }
706 else if (operation == SMIME_VERIFY)
707 {
708 STACK_OF(X509) *signers;
709 if (PKCS7_verify(p7, other, store, indata, out, flags))
710 BIO_printf(bio_err, "Verification successful\n");
711 else
712 {
713 BIO_printf(bio_err, "Verification failure\n");
714 goto end;
715 }
716 signers = PKCS7_get0_signers(p7, other, flags);
717 if (!save_certs(signerfile, signers))
718 {
719 BIO_printf(bio_err, "Error writing signers to %s\n",
720 signerfile);
721 ret = 5;
722 goto end;
723 }
724 sk_X509_free(signers);
725 }
726 else if (operation == SMIME_PK7OUT)
727 PEM_write_bio_PKCS7(out, p7);
728 else
729 {
730 if (to)
731 BIO_printf(out, "To: %s\n", to);
732 if (from)
733 BIO_printf(out, "From: %s\n", from);
734 if (subject)
735 BIO_printf(out, "Subject: %s\n", subject);
736 if (outformat == FORMAT_SMIME)
737 SMIME_write_PKCS7(out, p7, in, flags);
738 else if (outformat == FORMAT_PEM)
739 PEM_write_bio_PKCS7(out,p7);
740 else if (outformat == FORMAT_ASN1)
741 i2d_PKCS7_bio(out,p7);
742 else
743 {
744 BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
745 goto end;
746 }
747 }
748 ret = 0;
749 end:
750 if (need_rand)
751 app_RAND_write_file(NULL, bio_err);
752 if (ret) ERR_print_errors(bio_err);
753 sk_X509_pop_free(encerts, X509_free);
754 sk_X509_pop_free(other, X509_free);
755 if (vpm)
756 X509_VERIFY_PARAM_free(vpm);
757 X509_STORE_free(store);
758 X509_free(cert);
759 X509_free(recip);
760 X509_free(signer);
761 EVP_PKEY_free(key);
762 PKCS7_free(p7);
763 BIO_free(in);
764 BIO_free(indata);
765 BIO_free_all(out);
766 if (passin) OPENSSL_free(passin);
767 return (ret);
768 }
769
770 static int save_certs(char *signerfile, STACK_OF(X509) *signers)
771 {
772 int i;
773 BIO *tmp;
774 if (!signerfile)
775 return 1;
776 tmp = BIO_new_file(signerfile, "w");
777 if (!tmp) return 0;
778 for(i = 0; i < sk_X509_num(signers); i++)
779 PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
780 BIO_free(tmp);
781 return 1;
782 }
783
784
785 /* Minimal callback just to output policy info (if any) */
786
787 static int smime_cb(int ok, X509_STORE_CTX *ctx)
788 {
789 int error;
790
791 error = X509_STORE_CTX_get_error(ctx);
792
793 if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
794 && ((error != X509_V_OK) || (ok != 2)))
795 return ok;
796
797 policies_print(NULL, ctx);
798
799 return ok;
800
801 }
DragonFly BSD