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192.168.1.100 / T106_DC / 9ed821d7e5d875a3395740a9cc2545671fa429b7 / . / ap / lib / libssl / openssl-1.1.1o / apps / smime.c
blob: 6fd473775f45a4ac7fb49823c8e4949be391d82d [file] [log] [blame]
lh9ed821d2023-04-07 01:36:19 -0700[diff] [blame^]1/*
2 * Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/* S/MIME utility function */
11
12#include <stdio.h>
13#include <string.h>
14#include "apps.h"
15#include "progs.h"
16#include <openssl/crypto.h>
17#include <openssl/pem.h>
18#include <openssl/err.h>
19#include <openssl/x509_vfy.h>
20#include <openssl/x509v3.h>
21
22static int save_certs(char *signerfile, STACK_OF(X509) *signers);
23static int smime_cb(int ok, X509_STORE_CTX *ctx);
24
25#define SMIME_OP 0x10
26#define SMIME_IP 0x20
27#define SMIME_SIGNERS 0x40
28#define SMIME_ENCRYPT (1 | SMIME_OP)
29#define SMIME_DECRYPT (2 | SMIME_IP)
30#define SMIME_SIGN (3 | SMIME_OP | SMIME_SIGNERS)
31#define SMIME_VERIFY (4 | SMIME_IP)
32#define SMIME_PK7OUT (5 | SMIME_IP | SMIME_OP)
33#define SMIME_RESIGN (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
34
35typedef enum OPTION_choice {
36 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
37 OPT_ENCRYPT, OPT_DECRYPT, OPT_SIGN, OPT_RESIGN, OPT_VERIFY,
38 OPT_PK7OUT, OPT_TEXT, OPT_NOINTERN, OPT_NOVERIFY, OPT_NOCHAIN,
39 OPT_NOCERTS, OPT_NOATTR, OPT_NODETACH, OPT_NOSMIMECAP,
40 OPT_BINARY, OPT_NOSIGS, OPT_STREAM, OPT_INDEF, OPT_NOINDEF,
41 OPT_CRLFEOL, OPT_ENGINE, OPT_PASSIN,
42 OPT_TO, OPT_FROM, OPT_SUBJECT, OPT_SIGNER, OPT_RECIP, OPT_MD,
43 OPT_CIPHER, OPT_INKEY, OPT_KEYFORM, OPT_CERTFILE, OPT_CAFILE,
44 OPT_R_ENUM,
45 OPT_V_ENUM,
46 OPT_CAPATH, OPT_NOCAFILE, OPT_NOCAPATH, OPT_IN, OPT_INFORM, OPT_OUT,
47 OPT_OUTFORM, OPT_CONTENT
48} OPTION_CHOICE;
49
50const OPTIONS smime_options[] = {
51 {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
52 {OPT_HELP_STR, 1, '-',
53 " cert.pem... recipient certs for encryption\n"},
54 {OPT_HELP_STR, 1, '-', "Valid options are:\n"},
55 {"help", OPT_HELP, '-', "Display this summary"},
56 {"encrypt", OPT_ENCRYPT, '-', "Encrypt message"},
57 {"decrypt", OPT_DECRYPT, '-', "Decrypt encrypted message"},
58 {"sign", OPT_SIGN, '-', "Sign message"},
59 {"verify", OPT_VERIFY, '-', "Verify signed message"},
60 {"pk7out", OPT_PK7OUT, '-', "Output PKCS#7 structure"},
61 {"nointern", OPT_NOINTERN, '-',
62 "Don't search certificates in message for signer"},
63 {"nosigs", OPT_NOSIGS, '-', "Don't verify message signature"},
64 {"noverify", OPT_NOVERIFY, '-', "Don't verify signers certificate"},
65 {"nocerts", OPT_NOCERTS, '-',
66 "Don't include signers certificate when signing"},
67 {"nodetach", OPT_NODETACH, '-', "Use opaque signing"},
68 {"noattr", OPT_NOATTR, '-', "Don't include any signed attributes"},
69 {"binary", OPT_BINARY, '-', "Don't translate message to text"},
70 {"certfile", OPT_CERTFILE, '<', "Other certificates file"},
71 {"signer", OPT_SIGNER, 's', "Signer certificate file"},
72 {"recip", OPT_RECIP, '<', "Recipient certificate file for decryption"},
73 {"in", OPT_IN, '<', "Input file"},
74 {"inform", OPT_INFORM, 'c', "Input format SMIME (default), PEM or DER"},
75 {"inkey", OPT_INKEY, 's',
76 "Input private key (if not signer or recipient)"},
77 {"keyform", OPT_KEYFORM, 'f', "Input private key format (PEM or ENGINE)"},
78 {"out", OPT_OUT, '>', "Output file"},
79 {"outform", OPT_OUTFORM, 'c',
80 "Output format SMIME (default), PEM or DER"},
81 {"content", OPT_CONTENT, '<',
82 "Supply or override content for detached signature"},
83 {"to", OPT_TO, 's', "To address"},
84 {"from", OPT_FROM, 's', "From address"},
85 {"subject", OPT_SUBJECT, 's', "Subject"},
86 {"text", OPT_TEXT, '-', "Include or delete text MIME headers"},
87 {"CApath", OPT_CAPATH, '/', "Trusted certificates directory"},
88 {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
89 {"no-CAfile", OPT_NOCAFILE, '-',
90 "Do not load the default certificates file"},
91 {"no-CApath", OPT_NOCAPATH, '-',
92 "Do not load certificates from the default certificates directory"},
93 {"resign", OPT_RESIGN, '-', "Resign a signed message"},
94 {"nochain", OPT_NOCHAIN, '-',
95 "set PKCS7_NOCHAIN so certificates contained in the message are not used as untrusted CAs" },
96 {"nosmimecap", OPT_NOSMIMECAP, '-', "Omit the SMIMECapabilities attribute"},
97 {"stream", OPT_STREAM, '-', "Enable CMS streaming" },
98 {"indef", OPT_INDEF, '-', "Same as -stream" },
99 {"noindef", OPT_NOINDEF, '-', "Disable CMS streaming"},
100 {"crlfeol", OPT_CRLFEOL, '-', "Use CRLF as EOL termination instead of CR only"},
101 OPT_R_OPTIONS,
102 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
103 {"md", OPT_MD, 's', "Digest algorithm to use when signing or resigning"},
104 {"", OPT_CIPHER, '-', "Any supported cipher"},
105 OPT_V_OPTIONS,
106#ifndef OPENSSL_NO_ENGINE
107 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
108#endif
109 {NULL}
110};
111
112int smime_main(int argc, char **argv)
113{
114 BIO *in = NULL, *out = NULL, *indata = NULL;
115 EVP_PKEY *key = NULL;
116 PKCS7 *p7 = NULL;
117 STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL;
118 STACK_OF(X509) *encerts = NULL, *other = NULL;
119 X509 *cert = NULL, *recip = NULL, *signer = NULL;
120 X509_STORE *store = NULL;
121 X509_VERIFY_PARAM *vpm = NULL;
122 const EVP_CIPHER *cipher = NULL;
123 const EVP_MD *sign_md = NULL;
124 const char *CAfile = NULL, *CApath = NULL, *prog = NULL;
125 char *certfile = NULL, *keyfile = NULL, *contfile = NULL;
126 char *infile = NULL, *outfile = NULL, *signerfile = NULL, *recipfile = NULL;
127 char *passinarg = NULL, *passin = NULL, *to = NULL, *from = NULL, *subject = NULL;
128 OPTION_CHOICE o;
129 int noCApath = 0, noCAfile = 0;
130 int flags = PKCS7_DETACHED, operation = 0, ret = 0, indef = 0;
131 int informat = FORMAT_SMIME, outformat = FORMAT_SMIME, keyform =
132 FORMAT_PEM;
133 int vpmtouched = 0, rv = 0;
134 ENGINE *e = NULL;
135 const char *mime_eol = "\n";
136
137 if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
138 return 1;
139
140 prog = opt_init(argc, argv, smime_options);
141 while ((o = opt_next()) != OPT_EOF) {
142 switch (o) {
143 case OPT_EOF:
144 case OPT_ERR:
145 opthelp:
146 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
147 goto end;
148 case OPT_HELP:
149 opt_help(smime_options);
150 ret = 0;
151 goto end;
152 case OPT_INFORM:
153 if (!opt_format(opt_arg(), OPT_FMT_PDS, &informat))
154 goto opthelp;
155 break;
156 case OPT_IN:
157 infile = opt_arg();
158 break;
159 case OPT_OUTFORM:
160 if (!opt_format(opt_arg(), OPT_FMT_PDS, &outformat))
161 goto opthelp;
162 break;
163 case OPT_OUT:
164 outfile = opt_arg();
165 break;
166 case OPT_ENCRYPT:
167 operation = SMIME_ENCRYPT;
168 break;
169 case OPT_DECRYPT:
170 operation = SMIME_DECRYPT;
171 break;
172 case OPT_SIGN:
173 operation = SMIME_SIGN;
174 break;
175 case OPT_RESIGN:
176 operation = SMIME_RESIGN;
177 break;
178 case OPT_VERIFY:
179 operation = SMIME_VERIFY;
180 break;
181 case OPT_PK7OUT:
182 operation = SMIME_PK7OUT;
183 break;
184 case OPT_TEXT:
185 flags |= PKCS7_TEXT;
186 break;
187 case OPT_NOINTERN:
188 flags |= PKCS7_NOINTERN;
189 break;
190 case OPT_NOVERIFY:
191 flags |= PKCS7_NOVERIFY;
192 break;
193 case OPT_NOCHAIN:
194 flags |= PKCS7_NOCHAIN;
195 break;
196 case OPT_NOCERTS:
197 flags |= PKCS7_NOCERTS;
198 break;
199 case OPT_NOATTR:
200 flags |= PKCS7_NOATTR;
201 break;
202 case OPT_NODETACH:
203 flags &= ~PKCS7_DETACHED;
204 break;
205 case OPT_NOSMIMECAP:
206 flags |= PKCS7_NOSMIMECAP;
207 break;
208 case OPT_BINARY:
209 flags |= PKCS7_BINARY;
210 break;
211 case OPT_NOSIGS:
212 flags |= PKCS7_NOSIGS;
213 break;
214 case OPT_STREAM:
215 case OPT_INDEF:
216 indef = 1;
217 break;
218 case OPT_NOINDEF:
219 indef = 0;
220 break;
221 case OPT_CRLFEOL:
222 flags |= PKCS7_CRLFEOL;
223 mime_eol = "\r\n";
224 break;
225 case OPT_R_CASES:
226 if (!opt_rand(o))
227 goto end;
228 break;
229 case OPT_ENGINE:
230 e = setup_engine(opt_arg(), 0);
231 break;
232 case OPT_PASSIN:
233 passinarg = opt_arg();
234 break;
235 case OPT_TO:
236 to = opt_arg();
237 break;
238 case OPT_FROM:
239 from = opt_arg();
240 break;
241 case OPT_SUBJECT:
242 subject = opt_arg();
243 break;
244 case OPT_SIGNER:
245 /* If previous -signer argument add signer to list */
246 if (signerfile != NULL) {
247 if (sksigners == NULL
248 && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
249 goto end;
250 sk_OPENSSL_STRING_push(sksigners, signerfile);
251 if (keyfile == NULL)
252 keyfile = signerfile;
253 if (skkeys == NULL
254 && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
255 goto end;
256 sk_OPENSSL_STRING_push(skkeys, keyfile);
257 keyfile = NULL;
258 }
259 signerfile = opt_arg();
260 break;
261 case OPT_RECIP:
262 recipfile = opt_arg();
263 break;
264 case OPT_MD:
265 if (!opt_md(opt_arg(), &sign_md))
266 goto opthelp;
267 break;
268 case OPT_CIPHER:
269 if (!opt_cipher(opt_unknown(), &cipher))
270 goto opthelp;
271 break;
272 case OPT_INKEY:
273 /* If previous -inkey argument add signer to list */
274 if (keyfile != NULL) {
275 if (signerfile == NULL) {
276 BIO_printf(bio_err,
277 "%s: Must have -signer before -inkey\n", prog);
278 goto opthelp;
279 }
280 if (sksigners == NULL
281 && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
282 goto end;
283 sk_OPENSSL_STRING_push(sksigners, signerfile);
284 signerfile = NULL;
285 if (skkeys == NULL
286 && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
287 goto end;
288 sk_OPENSSL_STRING_push(skkeys, keyfile);
289 }
290 keyfile = opt_arg();
291 break;
292 case OPT_KEYFORM:
293 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
294 goto opthelp;
295 break;
296 case OPT_CERTFILE:
297 certfile = opt_arg();
298 break;
299 case OPT_CAFILE:
300 CAfile = opt_arg();
301 break;
302 case OPT_CAPATH:
303 CApath = opt_arg();
304 break;
305 case OPT_NOCAFILE:
306 noCAfile = 1;
307 break;
308 case OPT_NOCAPATH:
309 noCApath = 1;
310 break;
311 case OPT_CONTENT:
312 contfile = opt_arg();
313 break;
314 case OPT_V_CASES:
315 if (!opt_verify(o, vpm))
316 goto opthelp;
317 vpmtouched++;
318 break;
319 }
320 }
321 argc = opt_num_rest();
322 argv = opt_rest();
323
324 if (!(operation & SMIME_SIGNERS) && (skkeys != NULL || sksigners != NULL)) {
325 BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
326 goto opthelp;
327 }
328
329 if (operation & SMIME_SIGNERS) {
330 /* Check to see if any final signer needs to be appended */
331 if (keyfile && !signerfile) {
332 BIO_puts(bio_err, "Illegal -inkey without -signer\n");
333 goto opthelp;
334 }
335 if (signerfile != NULL) {
336 if (sksigners == NULL
337 && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
338 goto end;
339 sk_OPENSSL_STRING_push(sksigners, signerfile);
340 if (!skkeys && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
341 goto end;
342 if (!keyfile)
343 keyfile = signerfile;
344 sk_OPENSSL_STRING_push(skkeys, keyfile);
345 }
346 if (sksigners == NULL) {
347 BIO_printf(bio_err, "No signer certificate specified\n");
348 goto opthelp;
349 }
350 signerfile = NULL;
351 keyfile = NULL;
352 } else if (operation == SMIME_DECRYPT) {
353 if (recipfile == NULL && keyfile == NULL) {
354 BIO_printf(bio_err,
355 "No recipient certificate or key specified\n");
356 goto opthelp;
357 }
358 } else if (operation == SMIME_ENCRYPT) {
359 if (argc == 0) {
360 BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
361 goto opthelp;
362 }
363 } else if (!operation) {
364 goto opthelp;
365 }
366
367 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
368 BIO_printf(bio_err, "Error getting password\n");
369 goto end;
370 }
371
372 ret = 2;
373
374 if (!(operation & SMIME_SIGNERS))
375 flags &= ~PKCS7_DETACHED;
376
377 if (!(operation & SMIME_OP)) {
378 if (flags & PKCS7_BINARY)
379 outformat = FORMAT_BINARY;
380 }
381
382 if (!(operation & SMIME_IP)) {
383 if (flags & PKCS7_BINARY)
384 informat = FORMAT_BINARY;
385 }
386
387 if (operation == SMIME_ENCRYPT) {
388 if (cipher == NULL) {
389#ifndef OPENSSL_NO_DES
390 cipher = EVP_des_ede3_cbc();
391#else
392 BIO_printf(bio_err, "No cipher selected\n");
393 goto end;
394#endif
395 }
396 encerts = sk_X509_new_null();
397 if (encerts == NULL)
398 goto end;
399 while (*argv != NULL) {
400 cert = load_cert(*argv, FORMAT_PEM,
401 "recipient certificate file");
402 if (cert == NULL)
403 goto end;
404 sk_X509_push(encerts, cert);
405 cert = NULL;
406 argv++;
407 }
408 }
409
410 if (certfile != NULL) {
411 if (!load_certs(certfile, &other, FORMAT_PEM, NULL,
412 "certificate file")) {
413 ERR_print_errors(bio_err);
414 goto end;
415 }
416 }
417
418 if (recipfile != NULL && (operation == SMIME_DECRYPT)) {
419 if ((recip = load_cert(recipfile, FORMAT_PEM,
420 "recipient certificate file")) == NULL) {
421 ERR_print_errors(bio_err);
422 goto end;
423 }
424 }
425
426 if (operation == SMIME_DECRYPT) {
427 if (keyfile == NULL)
428 keyfile = recipfile;
429 } else if (operation == SMIME_SIGN) {
430 if (keyfile == NULL)
431 keyfile = signerfile;
432 } else {
433 keyfile = NULL;
434 }
435
436 if (keyfile != NULL) {
437 key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
438 if (key == NULL)
439 goto end;
440 }
441
442 in = bio_open_default(infile, 'r', informat);
443 if (in == NULL)
444 goto end;
445
446 if (operation & SMIME_IP) {
447 if (informat == FORMAT_SMIME) {
448 p7 = SMIME_read_PKCS7(in, &indata);
449 } else if (informat == FORMAT_PEM) {
450 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
451 } else if (informat == FORMAT_ASN1) {
452 p7 = d2i_PKCS7_bio(in, NULL);
453 } else {
454 BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
455 goto end;
456 }
457
458 if (p7 == NULL) {
459 BIO_printf(bio_err, "Error reading S/MIME message\n");
460 goto end;
461 }
462 if (contfile != NULL) {
463 BIO_free(indata);
464 if ((indata = BIO_new_file(contfile, "rb")) == NULL) {
465 BIO_printf(bio_err, "Can't read content file %s\n", contfile);
466 goto end;
467 }
468 }
469 }
470
471 out = bio_open_default(outfile, 'w', outformat);
472 if (out == NULL)
473 goto end;
474
475 if (operation == SMIME_VERIFY) {
476 if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
477 goto end;
478 X509_STORE_set_verify_cb(store, smime_cb);
479 if (vpmtouched)
480 X509_STORE_set1_param(store, vpm);
481 }
482
483 ret = 3;
484
485 if (operation == SMIME_ENCRYPT) {
486 if (indef)
487 flags |= PKCS7_STREAM;
488 p7 = PKCS7_encrypt(encerts, in, cipher, flags);
489 } else if (operation & SMIME_SIGNERS) {
490 int i;
491 /*
492 * If detached data content we only enable streaming if S/MIME output
493 * format.
494 */
495 if (operation == SMIME_SIGN) {
496 if (flags & PKCS7_DETACHED) {
497 if (outformat == FORMAT_SMIME)
498 flags |= PKCS7_STREAM;
499 } else if (indef) {
500 flags |= PKCS7_STREAM;
501 }
502 flags |= PKCS7_PARTIAL;
503 p7 = PKCS7_sign(NULL, NULL, other, in, flags);
504 if (p7 == NULL)
505 goto end;
506 if (flags & PKCS7_NOCERTS) {
507 for (i = 0; i < sk_X509_num(other); i++) {
508 X509 *x = sk_X509_value(other, i);
509 PKCS7_add_certificate(p7, x);
510 }
511 }
512 } else {
513 flags |= PKCS7_REUSE_DIGEST;
514 }
515 for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) {
516 signerfile = sk_OPENSSL_STRING_value(sksigners, i);
517 keyfile = sk_OPENSSL_STRING_value(skkeys, i);
518 signer = load_cert(signerfile, FORMAT_PEM,
519 "signer certificate");
520 if (signer == NULL)
521 goto end;
522 key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
523 if (key == NULL)
524 goto end;
525 if (!PKCS7_sign_add_signer(p7, signer, key, sign_md, flags))
526 goto end;
527 X509_free(signer);
528 signer = NULL;
529 EVP_PKEY_free(key);
530 key = NULL;
531 }
532 /* If not streaming or resigning finalize structure */
533 if ((operation == SMIME_SIGN) && !(flags & PKCS7_STREAM)) {
534 if (!PKCS7_final(p7, in, flags))
535 goto end;
536 }
537 }
538
539 if (p7 == NULL) {
540 BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
541 goto end;
542 }
543
544 ret = 4;
545 if (operation == SMIME_DECRYPT) {
546 if (!PKCS7_decrypt(p7, key, recip, out, flags)) {
547 BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
548 goto end;
549 }
550 } else if (operation == SMIME_VERIFY) {
551 STACK_OF(X509) *signers;
552 if (PKCS7_verify(p7, other, store, indata, out, flags))
553 BIO_printf(bio_err, "Verification successful\n");
554 else {
555 BIO_printf(bio_err, "Verification failure\n");
556 goto end;
557 }
558 signers = PKCS7_get0_signers(p7, other, flags);
559 if (!save_certs(signerfile, signers)) {
560 BIO_printf(bio_err, "Error writing signers to %s\n", signerfile);
561 ret = 5;
562 goto end;
563 }
564 sk_X509_free(signers);
565 } else if (operation == SMIME_PK7OUT) {
566 PEM_write_bio_PKCS7(out, p7);
567 } else {
568 if (to)
569 BIO_printf(out, "To: %s%s", to, mime_eol);
570 if (from)
571 BIO_printf(out, "From: %s%s", from, mime_eol);
572 if (subject)
573 BIO_printf(out, "Subject: %s%s", subject, mime_eol);
574 if (outformat == FORMAT_SMIME) {
575 if (operation == SMIME_RESIGN)
576 rv = SMIME_write_PKCS7(out, p7, indata, flags);
577 else
578 rv = SMIME_write_PKCS7(out, p7, in, flags);
579 } else if (outformat == FORMAT_PEM) {
580 rv = PEM_write_bio_PKCS7_stream(out, p7, in, flags);
581 } else if (outformat == FORMAT_ASN1) {
582 rv = i2d_PKCS7_bio_stream(out, p7, in, flags);
583 } else {
584 BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
585 goto end;
586 }
587 if (rv == 0) {
588 BIO_printf(bio_err, "Error writing output\n");
589 ret = 3;
590 goto end;
591 }
592 }
593 ret = 0;
594 end:
595 if (ret)
596 ERR_print_errors(bio_err);
597 sk_X509_pop_free(encerts, X509_free);
598 sk_X509_pop_free(other, X509_free);
599 X509_VERIFY_PARAM_free(vpm);
600 sk_OPENSSL_STRING_free(sksigners);
601 sk_OPENSSL_STRING_free(skkeys);
602 X509_STORE_free(store);
603 X509_free(cert);
604 X509_free(recip);
605 X509_free(signer);
606 EVP_PKEY_free(key);
607 PKCS7_free(p7);
608 release_engine(e);
609 BIO_free(in);
610 BIO_free(indata);
611 BIO_free_all(out);
612 OPENSSL_free(passin);
613 return ret;
614}
615
616static int save_certs(char *signerfile, STACK_OF(X509) *signers)
617{
618 int i;
619 BIO *tmp;
620
621 if (signerfile == NULL)
622 return 1;
623 tmp = BIO_new_file(signerfile, "w");
624 if (tmp == NULL)
625 return 0;
626 for (i = 0; i < sk_X509_num(signers); i++)
627 PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
628 BIO_free(tmp);
629 return 1;
630}
631
632/* Minimal callback just to output policy info (if any) */
633
634static int smime_cb(int ok, X509_STORE_CTX *ctx)
635{
636 int error;
637
638 error = X509_STORE_CTX_get_error(ctx);
639
640 if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
641 && ((error != X509_V_OK) || (ok != 2)))
642 return ok;
643
644 policies_print(ctx);
645
646 return ok;
647}