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-rw-r--r--src/lib/libcrypto/pkcs7/pk7_doit.c1287
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diff --git a/src/lib/libcrypto/pkcs7/pk7_doit.c b/src/lib/libcrypto/pkcs7/pk7_doit.c
deleted file mode 100644
index 50e4fe39c1..0000000000
--- a/src/lib/libcrypto/pkcs7/pk7_doit.c
+++ /dev/null
@@ -1,1287 +0,0 @@
1/* $OpenBSD: pk7_doit.c,v 1.38 2015/09/30 18:41:06 jsing Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62
63#include <openssl/err.h>
64#include <openssl/objects.h>
65#include <openssl/x509.h>
66#include <openssl/x509v3.h>
67
68static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
69 void *value);
70static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
71
72static int
73PKCS7_type_is_other(PKCS7* p7)
74{
75 int isOther = 1;
76
77 int nid = OBJ_obj2nid(p7->type);
78
79 switch (nid ) {
80 case NID_pkcs7_data:
81 case NID_pkcs7_signed:
82 case NID_pkcs7_enveloped:
83 case NID_pkcs7_signedAndEnveloped:
84 case NID_pkcs7_digest:
85 case NID_pkcs7_encrypted:
86 isOther = 0;
87 break;
88 default:
89 isOther = 1;
90 }
91
92 return isOther;
93
94}
95
96static ASN1_OCTET_STRING *
97PKCS7_get_octet_string(PKCS7 *p7)
98{
99 if (PKCS7_type_is_data(p7))
100 return p7->d.data;
101 if (PKCS7_type_is_other(p7) && p7->d.other &&
102 (p7->d.other->type == V_ASN1_OCTET_STRING))
103 return p7->d.other->value.octet_string;
104 return NULL;
105}
106
107static int
108PKCS7_bio_add_digest(BIO **pbio, X509_ALGOR *alg)
109{
110 BIO *btmp;
111 const EVP_MD *md;
112 if ((btmp = BIO_new(BIO_f_md())) == NULL) {
113 PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST, ERR_R_BIO_LIB);
114 goto err;
115 }
116
117 md = EVP_get_digestbyobj(alg->algorithm);
118 if (md == NULL) {
119 PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,
120 PKCS7_R_UNKNOWN_DIGEST_TYPE);
121 goto err;
122 }
123
124 BIO_set_md(btmp, md);
125 if (*pbio == NULL)
126 *pbio = btmp;
127 else if (!BIO_push(*pbio, btmp)) {
128 PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST, ERR_R_BIO_LIB);
129 goto err;
130 }
131 btmp = NULL;
132
133 return 1;
134
135err:
136 BIO_free(btmp);
137 return 0;
138
139}
140
141static int
142pkcs7_encode_rinfo(PKCS7_RECIP_INFO *ri, unsigned char *key, int keylen)
143{
144 EVP_PKEY_CTX *pctx = NULL;
145 EVP_PKEY *pkey = NULL;
146 unsigned char *ek = NULL;
147 int ret = 0;
148 size_t eklen;
149
150 pkey = X509_get_pubkey(ri->cert);
151 if (!pkey)
152 return 0;
153
154 pctx = EVP_PKEY_CTX_new(pkey, NULL);
155 if (!pctx)
156 return 0;
157
158 if (EVP_PKEY_encrypt_init(pctx) <= 0)
159 goto err;
160
161 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_ENCRYPT,
162 EVP_PKEY_CTRL_PKCS7_ENCRYPT, 0, ri) <= 0) {
163 PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, PKCS7_R_CTRL_ERROR);
164 goto err;
165 }
166
167 if (EVP_PKEY_encrypt(pctx, NULL, &eklen, key, keylen) <= 0)
168 goto err;
169
170 ek = malloc(eklen);
171
172 if (ek == NULL) {
173 PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, ERR_R_MALLOC_FAILURE);
174 goto err;
175 }
176
177 if (EVP_PKEY_encrypt(pctx, ek, &eklen, key, keylen) <= 0)
178 goto err;
179
180 ASN1_STRING_set0(ri->enc_key, ek, eklen);
181 ek = NULL;
182
183 ret = 1;
184
185err:
186 EVP_PKEY_free(pkey);
187 EVP_PKEY_CTX_free(pctx);
188 free(ek);
189 return ret;
190}
191
192
193static int
194pkcs7_decrypt_rinfo(unsigned char **pek, int *peklen, PKCS7_RECIP_INFO *ri,
195 EVP_PKEY *pkey)
196{
197 EVP_PKEY_CTX *pctx = NULL;
198 unsigned char *ek = NULL;
199 size_t eklen;
200
201 int ret = -1;
202
203 pctx = EVP_PKEY_CTX_new(pkey, NULL);
204 if (!pctx)
205 return -1;
206
207 if (EVP_PKEY_decrypt_init(pctx) <= 0)
208 goto err;
209
210 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DECRYPT,
211 EVP_PKEY_CTRL_PKCS7_DECRYPT, 0, ri) <= 0) {
212 PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, PKCS7_R_CTRL_ERROR);
213 goto err;
214 }
215
216 if (EVP_PKEY_decrypt(pctx, NULL, &eklen,
217 ri->enc_key->data, ri->enc_key->length) <= 0)
218 goto err;
219
220 ek = malloc(eklen);
221 if (ek == NULL) {
222 PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_MALLOC_FAILURE);
223 goto err;
224 }
225
226 if (EVP_PKEY_decrypt(pctx, ek, &eklen,
227 ri->enc_key->data, ri->enc_key->length) <= 0) {
228 ret = 0;
229 PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_EVP_LIB);
230 goto err;
231 }
232
233 ret = 1;
234
235 if (*pek) {
236 explicit_bzero(*pek, *peklen);
237 free(*pek);
238 }
239
240 *pek = ek;
241 *peklen = eklen;
242
243err:
244 EVP_PKEY_CTX_free(pctx);
245 if (!ret && ek)
246 free(ek);
247
248 return ret;
249}
250
251BIO *
252PKCS7_dataInit(PKCS7 *p7, BIO *bio)
253{
254 int i;
255 BIO *out = NULL, *btmp = NULL;
256 X509_ALGOR *xa = NULL;
257 const EVP_CIPHER *evp_cipher = NULL;
258 STACK_OF(X509_ALGOR) *md_sk = NULL;
259 STACK_OF(PKCS7_RECIP_INFO) *rsk = NULL;
260 X509_ALGOR *xalg = NULL;
261 PKCS7_RECIP_INFO *ri = NULL;
262 ASN1_OCTET_STRING *os = NULL;
263
264 if (p7 == NULL) {
265 PKCS7err(PKCS7_F_PKCS7_DATAINIT, PKCS7_R_INVALID_NULL_POINTER);
266 return NULL;
267 }
268
269 /*
270 * The content field in the PKCS7 ContentInfo is optional,
271 * but that really only applies to inner content (precisely,
272 * detached signatures).
273 *
274 * When reading content, missing outer content is therefore
275 * treated as an error.
276 *
277 * When creating content, PKCS7_content_new() must be called
278 * before calling this method, so a NULL p7->d is always
279 * an error.
280 */
281 if (p7->d.ptr == NULL) {
282 PKCS7err(PKCS7_F_PKCS7_DATAINIT, PKCS7_R_NO_CONTENT);
283 return NULL;
284 }
285
286 i = OBJ_obj2nid(p7->type);
287 p7->state = PKCS7_S_HEADER;
288
289 switch (i) {
290 case NID_pkcs7_signed:
291 md_sk = p7->d.sign->md_algs;
292 os = PKCS7_get_octet_string(p7->d.sign->contents);
293 break;
294 case NID_pkcs7_signedAndEnveloped:
295 rsk = p7->d.signed_and_enveloped->recipientinfo;
296 md_sk = p7->d.signed_and_enveloped->md_algs;
297 xalg = p7->d.signed_and_enveloped->enc_data->algorithm;
298 evp_cipher = p7->d.signed_and_enveloped->enc_data->cipher;
299 if (evp_cipher == NULL) {
300 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
301 PKCS7_R_CIPHER_NOT_INITIALIZED);
302 goto err;
303 }
304 break;
305 case NID_pkcs7_enveloped:
306 rsk = p7->d.enveloped->recipientinfo;
307 xalg = p7->d.enveloped->enc_data->algorithm;
308 evp_cipher = p7->d.enveloped->enc_data->cipher;
309 if (evp_cipher == NULL) {
310 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
311 PKCS7_R_CIPHER_NOT_INITIALIZED);
312 goto err;
313 }
314 break;
315 case NID_pkcs7_digest:
316 xa = p7->d.digest->md;
317 os = PKCS7_get_octet_string(p7->d.digest->contents);
318 break;
319 case NID_pkcs7_data:
320 break;
321 default:
322 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
323 PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
324 goto err;
325 }
326
327 for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++)
328 if (!PKCS7_bio_add_digest(&out, sk_X509_ALGOR_value(md_sk, i)))
329 goto err;
330
331 if (xa && !PKCS7_bio_add_digest(&out, xa))
332 goto err;
333
334 if (evp_cipher != NULL) {
335 unsigned char key[EVP_MAX_KEY_LENGTH];
336 unsigned char iv[EVP_MAX_IV_LENGTH];
337 int keylen, ivlen;
338 EVP_CIPHER_CTX *ctx;
339
340 if ((btmp = BIO_new(BIO_f_cipher())) == NULL) {
341 PKCS7err(PKCS7_F_PKCS7_DATAINIT, ERR_R_BIO_LIB);
342 goto err;
343 }
344 BIO_get_cipher_ctx(btmp, &ctx);
345 keylen = EVP_CIPHER_key_length(evp_cipher);
346 ivlen = EVP_CIPHER_iv_length(evp_cipher);
347 xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
348 if (ivlen > 0)
349 arc4random_buf(iv, ivlen);
350 if (EVP_CipherInit_ex(ctx, evp_cipher, NULL, NULL,
351 NULL, 1) <= 0)
352 goto err;
353 if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0)
354 goto err;
355 if (EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, 1) <= 0)
356 goto err;
357
358 if (ivlen > 0) {
359 if (xalg->parameter == NULL) {
360 xalg->parameter = ASN1_TYPE_new();
361 if (xalg->parameter == NULL)
362 goto err;
363 }
364 if (EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
365 goto err;
366 }
367
368 /* Lets do the pub key stuff :-) */
369 for (i = 0; i < sk_PKCS7_RECIP_INFO_num(rsk); i++) {
370 ri = sk_PKCS7_RECIP_INFO_value(rsk, i);
371 if (pkcs7_encode_rinfo(ri, key, keylen) <= 0)
372 goto err;
373 }
374 explicit_bzero(key, keylen);
375
376 if (out == NULL)
377 out = btmp;
378 else
379 BIO_push(out, btmp);
380 btmp = NULL;
381 }
382
383 if (bio == NULL) {
384 if (PKCS7_is_detached(p7))
385 bio = BIO_new(BIO_s_null());
386 else if (os && os->length > 0)
387 bio = BIO_new_mem_buf(os->data, os->length);
388 if (bio == NULL) {
389 bio = BIO_new(BIO_s_mem());
390 if (bio == NULL)
391 goto err;
392 BIO_set_mem_eof_return(bio, 0);
393 }
394 }
395 if (out)
396 BIO_push(out, bio);
397 else
398 out = bio;
399 bio = NULL;
400 if (0) {
401err:
402 if (out != NULL)
403 BIO_free_all(out);
404 if (btmp != NULL)
405 BIO_free_all(btmp);
406 out = NULL;
407 }
408 return (out);
409}
410
411static int
412pkcs7_cmp_ri(PKCS7_RECIP_INFO *ri, X509 *pcert)
413{
414 int ret;
415
416 ret = X509_NAME_cmp(ri->issuer_and_serial->issuer,
417 pcert->cert_info->issuer);
418 if (ret)
419 return ret;
420 return ASN1_STRING_cmp(pcert->cert_info->serialNumber,
421 ri->issuer_and_serial->serial);
422}
423
424/* int */
425BIO *
426PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
427{
428 int i, j;
429 BIO *out = NULL, *btmp = NULL, *etmp = NULL, *bio = NULL;
430 X509_ALGOR *xa;
431 ASN1_OCTET_STRING *data_body = NULL;
432 const EVP_MD *evp_md;
433 const EVP_CIPHER *evp_cipher = NULL;
434 EVP_CIPHER_CTX *evp_ctx = NULL;
435 X509_ALGOR *enc_alg = NULL;
436 STACK_OF(X509_ALGOR) *md_sk = NULL;
437 STACK_OF(PKCS7_RECIP_INFO) *rsk = NULL;
438 PKCS7_RECIP_INFO *ri = NULL;
439 unsigned char *ek = NULL, *tkey = NULL;
440 int eklen = 0, tkeylen = 0;
441
442 if (p7 == NULL) {
443 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
444 PKCS7_R_INVALID_NULL_POINTER);
445 return NULL;
446 }
447
448 if (p7->d.ptr == NULL) {
449 PKCS7err(PKCS7_F_PKCS7_DATADECODE, PKCS7_R_NO_CONTENT);
450 return NULL;
451 }
452
453 i = OBJ_obj2nid(p7->type);
454 p7->state = PKCS7_S_HEADER;
455
456 switch (i) {
457 case NID_pkcs7_signed:
458 data_body = PKCS7_get_octet_string(p7->d.sign->contents);
459 md_sk = p7->d.sign->md_algs;
460 break;
461 case NID_pkcs7_signedAndEnveloped:
462 rsk = p7->d.signed_and_enveloped->recipientinfo;
463 md_sk = p7->d.signed_and_enveloped->md_algs;
464 data_body = p7->d.signed_and_enveloped->enc_data->enc_data;
465 enc_alg = p7->d.signed_and_enveloped->enc_data->algorithm;
466 evp_cipher = EVP_get_cipherbyobj(enc_alg->algorithm);
467 if (evp_cipher == NULL) {
468 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
469 PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
470 goto err;
471 }
472 break;
473 case NID_pkcs7_enveloped:
474 rsk = p7->d.enveloped->recipientinfo;
475 enc_alg = p7->d.enveloped->enc_data->algorithm;
476 data_body = p7->d.enveloped->enc_data->enc_data;
477 evp_cipher = EVP_get_cipherbyobj(enc_alg->algorithm);
478 if (evp_cipher == NULL) {
479 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
480 PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
481 goto err;
482 }
483 break;
484 default:
485 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
486 PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
487 goto err;
488 }
489
490 /* We will be checking the signature */
491 if (md_sk != NULL) {
492 for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) {
493 xa = sk_X509_ALGOR_value(md_sk, i);
494 if ((btmp = BIO_new(BIO_f_md())) == NULL) {
495 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
496 ERR_R_BIO_LIB);
497 goto err;
498 }
499
500 j = OBJ_obj2nid(xa->algorithm);
501 evp_md = EVP_get_digestbynid(j);
502 if (evp_md == NULL) {
503 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
504 PKCS7_R_UNKNOWN_DIGEST_TYPE);
505 goto err;
506 }
507
508 BIO_set_md(btmp, evp_md);
509 if (out == NULL)
510 out = btmp;
511 else
512 BIO_push(out, btmp);
513 btmp = NULL;
514 }
515 }
516
517 if (evp_cipher != NULL) {
518 if ((etmp = BIO_new(BIO_f_cipher())) == NULL) {
519 PKCS7err(PKCS7_F_PKCS7_DATADECODE, ERR_R_BIO_LIB);
520 goto err;
521 }
522
523 /* It was encrypted, we need to decrypt the secret key
524 * with the private key */
525
526 /* Find the recipientInfo which matches the passed certificate
527 * (if any)
528 */
529 if (pcert) {
530 for (i = 0; i < sk_PKCS7_RECIP_INFO_num(rsk); i++) {
531 ri = sk_PKCS7_RECIP_INFO_value(rsk, i);
532 if (!pkcs7_cmp_ri(ri, pcert))
533 break;
534 ri = NULL;
535 }
536 if (ri == NULL) {
537 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
538 PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
539 goto err;
540 }
541 }
542
543 /* If we haven't got a certificate try each ri in turn */
544 if (pcert == NULL) {
545 /* Always attempt to decrypt all rinfo even
546 * after sucess as a defence against MMA timing
547 * attacks.
548 */
549 for (i = 0; i < sk_PKCS7_RECIP_INFO_num(rsk); i++) {
550 ri = sk_PKCS7_RECIP_INFO_value(rsk, i);
551
552 if (pkcs7_decrypt_rinfo(&ek, &eklen,
553 ri, pkey) < 0)
554 goto err;
555 ERR_clear_error();
556 }
557 } else {
558 /* Only exit on fatal errors, not decrypt failure */
559 if (pkcs7_decrypt_rinfo(&ek, &eklen, ri, pkey) < 0)
560 goto err;
561 ERR_clear_error();
562 }
563
564 evp_ctx = NULL;
565 BIO_get_cipher_ctx(etmp, &evp_ctx);
566 if (EVP_CipherInit_ex(evp_ctx, evp_cipher, NULL, NULL,
567 NULL, 0) <= 0)
568 goto err;
569 if (EVP_CIPHER_asn1_to_param(evp_ctx, enc_alg->parameter) < 0)
570 goto err;
571 /* Generate random key as MMA defence */
572 tkeylen = EVP_CIPHER_CTX_key_length(evp_ctx);
573 tkey = malloc(tkeylen);
574 if (!tkey)
575 goto err;
576 if (EVP_CIPHER_CTX_rand_key(evp_ctx, tkey) <= 0)
577 goto err;
578 if (ek == NULL) {
579 ek = tkey;
580 eklen = tkeylen;
581 tkey = NULL;
582 }
583
584 if (eklen != EVP_CIPHER_CTX_key_length(evp_ctx)) {
585 /* Some S/MIME clients don't use the same key
586 * and effective key length. The key length is
587 * determined by the size of the decrypted RSA key.
588 */
589 if (!EVP_CIPHER_CTX_set_key_length(evp_ctx, eklen)) {
590 /* Use random key as MMA defence */
591 explicit_bzero(ek, eklen);
592 free(ek);
593 ek = tkey;
594 eklen = tkeylen;
595 tkey = NULL;
596 }
597 }
598 /* Clear errors so we don't leak information useful in MMA */
599 ERR_clear_error();
600 if (EVP_CipherInit_ex(evp_ctx, NULL, NULL, ek, NULL, 0) <= 0)
601 goto err;
602
603 if (ek) {
604 explicit_bzero(ek, eklen);
605 free(ek);
606 ek = NULL;
607 }
608 if (tkey) {
609 explicit_bzero(tkey, tkeylen);
610 free(tkey);
611 tkey = NULL;
612 }
613
614 if (out == NULL)
615 out = etmp;
616 else
617 BIO_push(out, etmp);
618 etmp = NULL;
619 }
620
621 if (PKCS7_is_detached(p7) || (in_bio != NULL)) {
622 bio = in_bio;
623 } else {
624 if (data_body != NULL && data_body->length > 0)
625 bio = BIO_new_mem_buf(data_body->data, data_body->length);
626 else {
627 bio = BIO_new(BIO_s_mem());
628 BIO_set_mem_eof_return(bio, 0);
629 }
630 if (bio == NULL)
631 goto err;
632 }
633 BIO_push(out, bio);
634
635 if (0) {
636err:
637 if (ek) {
638 explicit_bzero(ek, eklen);
639 free(ek);
640 }
641 if (tkey) {
642 explicit_bzero(tkey, tkeylen);
643 free(tkey);
644 }
645 if (out != NULL)
646 BIO_free_all(out);
647 if (btmp != NULL)
648 BIO_free_all(btmp);
649 if (etmp != NULL)
650 BIO_free_all(etmp);
651 out = NULL;
652 }
653 return (out);
654}
655
656static BIO *
657PKCS7_find_digest(EVP_MD_CTX **pmd, BIO *bio, int nid)
658{
659 for (;;) {
660 bio = BIO_find_type(bio, BIO_TYPE_MD);
661 if (bio == NULL) {
662 PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,
663 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
664 return NULL;
665 }
666 BIO_get_md_ctx(bio, pmd);
667 if (*pmd == NULL) {
668 PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,
669 ERR_R_INTERNAL_ERROR);
670 return NULL;
671 }
672 if (EVP_MD_CTX_type(*pmd) == nid)
673 return bio;
674 bio = BIO_next(bio);
675 }
676 return NULL;
677}
678
679static int
680do_pkcs7_signed_attrib(PKCS7_SIGNER_INFO *si, EVP_MD_CTX *mctx)
681{
682 unsigned char md_data[EVP_MAX_MD_SIZE];
683 unsigned int md_len;
684
685 /* Add signing time if not already present */
686 if (!PKCS7_get_signed_attribute(si, NID_pkcs9_signingTime)) {
687 if (!PKCS7_add0_attrib_signing_time(si, NULL)) {
688 PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB,
689 ERR_R_MALLOC_FAILURE);
690 return 0;
691 }
692 }
693
694 /* Add digest */
695 if (!EVP_DigestFinal_ex(mctx, md_data, &md_len)) {
696 PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_EVP_LIB);
697 return 0;
698 }
699 if (!PKCS7_add1_attrib_digest(si, md_data, md_len)) {
700 PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_MALLOC_FAILURE);
701 return 0;
702 }
703
704 /* Now sign the attributes */
705 if (!PKCS7_SIGNER_INFO_sign(si))
706 return 0;
707
708 return 1;
709}
710
711
712int
713PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
714{
715 int ret = 0;
716 int i, j;
717 BIO *btmp;
718 PKCS7_SIGNER_INFO *si;
719 EVP_MD_CTX *mdc, ctx_tmp;
720 STACK_OF(X509_ATTRIBUTE) *sk;
721 STACK_OF(PKCS7_SIGNER_INFO) *si_sk = NULL;
722 ASN1_OCTET_STRING *os = NULL;
723
724 if (p7 == NULL) {
725 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
726 PKCS7_R_INVALID_NULL_POINTER);
727 return 0;
728 }
729
730 if (p7->d.ptr == NULL) {
731 PKCS7err(PKCS7_F_PKCS7_DATAFINAL, PKCS7_R_NO_CONTENT);
732 return 0;
733 }
734
735 EVP_MD_CTX_init(&ctx_tmp);
736 i = OBJ_obj2nid(p7->type);
737 p7->state = PKCS7_S_HEADER;
738
739 switch (i) {
740 case NID_pkcs7_data:
741 os = p7->d.data;
742 break;
743 case NID_pkcs7_signedAndEnveloped:
744 /* XXX */
745 si_sk = p7->d.signed_and_enveloped->signer_info;
746 os = p7->d.signed_and_enveloped->enc_data->enc_data;
747 if (!os) {
748 os = ASN1_OCTET_STRING_new();
749 if (!os) {
750 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
751 ERR_R_MALLOC_FAILURE);
752 goto err;
753 }
754 p7->d.signed_and_enveloped->enc_data->enc_data = os;
755 }
756 break;
757 case NID_pkcs7_enveloped:
758 /* XXX */
759 os = p7->d.enveloped->enc_data->enc_data;
760 if (!os) {
761 os = ASN1_OCTET_STRING_new();
762 if (!os) {
763 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
764 ERR_R_MALLOC_FAILURE);
765 goto err;
766 }
767 p7->d.enveloped->enc_data->enc_data = os;
768 }
769 break;
770 case NID_pkcs7_signed:
771 si_sk = p7->d.sign->signer_info;
772 os = PKCS7_get_octet_string(p7->d.sign->contents);
773 if (!PKCS7_is_detached(p7) && os == NULL) {
774 PKCS7err(PKCS7_F_PKCS7_DATAFINAL, PKCS7_R_DECODE_ERROR);
775 goto err;
776 }
777 /* If detached data then the content is excluded */
778 if (PKCS7_type_is_data(p7->d.sign->contents) && p7->detached) {
779 ASN1_OCTET_STRING_free(os);
780 os = NULL;
781 p7->d.sign->contents->d.data = NULL;
782 }
783 break;
784
785 case NID_pkcs7_digest:
786 os = PKCS7_get_octet_string(p7->d.digest->contents);
787 if (os == NULL) {
788 PKCS7err(PKCS7_F_PKCS7_DATAFINAL, PKCS7_R_DECODE_ERROR);
789 goto err;
790 }
791 /* If detached data then the content is excluded */
792 if (PKCS7_type_is_data(p7->d.digest->contents) &&
793 p7->detached) {
794 ASN1_OCTET_STRING_free(os);
795 os = NULL;
796 p7->d.digest->contents->d.data = NULL;
797 }
798 break;
799
800 default:
801 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
802 PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
803 goto err;
804 }
805
806 if (si_sk != NULL) {
807 for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(si_sk); i++) {
808 si = sk_PKCS7_SIGNER_INFO_value(si_sk, i);
809 if (si->pkey == NULL)
810 continue;
811
812 j = OBJ_obj2nid(si->digest_alg->algorithm);
813
814 btmp = bio;
815
816 btmp = PKCS7_find_digest(&mdc, btmp, j);
817
818 if (btmp == NULL)
819 goto err;
820
821 /* We now have the EVP_MD_CTX, lets do the
822 * signing. */
823 if (!EVP_MD_CTX_copy_ex(&ctx_tmp, mdc))
824 goto err;
825
826 sk = si->auth_attr;
827
828 /* If there are attributes, we add the digest
829 * attribute and only sign the attributes */
830 if (sk_X509_ATTRIBUTE_num(sk) > 0) {
831 if (!do_pkcs7_signed_attrib(si, &ctx_tmp))
832 goto err;
833 } else {
834 unsigned char *abuf = NULL;
835 unsigned int abuflen;
836 abuflen = EVP_PKEY_size(si->pkey);
837 abuf = malloc(abuflen);
838 if (!abuf)
839 goto err;
840
841 if (!EVP_SignFinal(&ctx_tmp, abuf, &abuflen,
842 si->pkey)) {
843 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
844 ERR_R_EVP_LIB);
845 goto err;
846 }
847 ASN1_STRING_set0(si->enc_digest, abuf, abuflen);
848 }
849 }
850 } else if (i == NID_pkcs7_digest) {
851 unsigned char md_data[EVP_MAX_MD_SIZE];
852 unsigned int md_len;
853
854 if (!PKCS7_find_digest(&mdc, bio,
855 OBJ_obj2nid(p7->d.digest->md->algorithm)))
856 goto err;
857 if (!EVP_DigestFinal_ex(mdc, md_data, &md_len))
858 goto err;
859 if (ASN1_STRING_set(p7->d.digest->digest, md_data,
860 md_len) == 0)
861 goto err;
862 }
863
864 if (!PKCS7_is_detached(p7)) {
865 /*
866 * NOTE: only reach os == NULL here because detached
867 * digested data support is broken?
868 */
869 if (os == NULL)
870 goto err;
871 if (!(os->flags & ASN1_STRING_FLAG_NDEF)) {
872 char *cont;
873 long contlen;
874
875 btmp = BIO_find_type(bio, BIO_TYPE_MEM);
876 if (btmp == NULL) {
877 PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
878 PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
879 goto err;
880 }
881 contlen = BIO_get_mem_data(btmp, &cont);
882 /*
883 * Mark the BIO read only then we can use its copy
884 * of the data instead of making an extra copy.
885 */
886 BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY);
887 BIO_set_mem_eof_return(btmp, 0);
888 ASN1_STRING_set0(os, (unsigned char *)cont, contlen);
889 }
890 }
891 ret = 1;
892err:
893 EVP_MD_CTX_cleanup(&ctx_tmp);
894 return (ret);
895}
896
897int
898PKCS7_SIGNER_INFO_sign(PKCS7_SIGNER_INFO *si)
899{
900 EVP_MD_CTX mctx;
901 EVP_PKEY_CTX *pctx;
902 unsigned char *abuf = NULL;
903 int alen;
904 size_t siglen;
905 const EVP_MD *md = NULL;
906
907 md = EVP_get_digestbyobj(si->digest_alg->algorithm);
908 if (md == NULL)
909 return 0;
910
911 EVP_MD_CTX_init(&mctx);
912 if (EVP_DigestSignInit(&mctx, &pctx, md, NULL, si->pkey) <= 0)
913 goto err;
914
915 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
916 EVP_PKEY_CTRL_PKCS7_SIGN, 0, si) <= 0) {
917 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR);
918 goto err;
919 }
920
921 alen = ASN1_item_i2d((ASN1_VALUE *)si->auth_attr, &abuf,
922 ASN1_ITEM_rptr(PKCS7_ATTR_SIGN));
923 if (!abuf)
924 goto err;
925 if (EVP_DigestSignUpdate(&mctx, abuf, alen) <= 0)
926 goto err;
927 free(abuf);
928 abuf = NULL;
929 if (EVP_DigestSignFinal(&mctx, NULL, &siglen) <= 0)
930 goto err;
931 abuf = malloc(siglen);
932 if (!abuf)
933 goto err;
934 if (EVP_DigestSignFinal(&mctx, abuf, &siglen) <= 0)
935 goto err;
936
937 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
938 EVP_PKEY_CTRL_PKCS7_SIGN, 1, si) <= 0) {
939 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR);
940 goto err;
941 }
942
943 EVP_MD_CTX_cleanup(&mctx);
944
945 ASN1_STRING_set0(si->enc_digest, abuf, siglen);
946
947 return 1;
948
949err:
950 free(abuf);
951 EVP_MD_CTX_cleanup(&mctx);
952 return 0;
953}
954
955int
956PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
957 PKCS7 *p7, PKCS7_SIGNER_INFO *si)
958{
959 PKCS7_ISSUER_AND_SERIAL *ias;
960 int ret = 0, i;
961 STACK_OF(X509) *cert;
962 X509 *x509;
963
964 if (p7 == NULL) {
965 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,
966 PKCS7_R_INVALID_NULL_POINTER);
967 return 0;
968 }
969
970 if (p7->d.ptr == NULL) {
971 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY, PKCS7_R_NO_CONTENT);
972 return 0;
973 }
974
975 if (PKCS7_type_is_signed(p7)) {
976 cert = p7->d.sign->cert;
977 } else if (PKCS7_type_is_signedAndEnveloped(p7)) {
978 cert = p7->d.signed_and_enveloped->cert;
979 } else {
980 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY, PKCS7_R_WRONG_PKCS7_TYPE);
981 goto err;
982 }
983 /* XXXX */
984 ias = si->issuer_and_serial;
985
986 x509 = X509_find_by_issuer_and_serial(cert, ias->issuer, ias->serial);
987
988 /* were we able to find the cert in passed to us */
989 if (x509 == NULL) {
990 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,
991 PKCS7_R_UNABLE_TO_FIND_CERTIFICATE);
992 goto err;
993 }
994
995 /* Lets verify */
996 if (!X509_STORE_CTX_init(ctx, cert_store, x509, cert)) {
997 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY, ERR_R_X509_LIB);
998 goto err;
999 }
1000 X509_STORE_CTX_set_purpose(ctx, X509_PURPOSE_SMIME_SIGN);
1001 i = X509_verify_cert(ctx);
1002 if (i <= 0) {
1003 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY, ERR_R_X509_LIB);
1004 X509_STORE_CTX_cleanup(ctx);
1005 goto err;
1006 }
1007 X509_STORE_CTX_cleanup(ctx);
1008
1009 return PKCS7_signatureVerify(bio, p7, si, x509);
1010err:
1011
1012 return ret;
1013}
1014
1015int
1016PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si, X509 *x509)
1017{
1018 ASN1_OCTET_STRING *os;
1019 EVP_MD_CTX mdc_tmp, *mdc;
1020 int ret = 0, i;
1021 int md_type;
1022 STACK_OF(X509_ATTRIBUTE) *sk;
1023 BIO *btmp;
1024 EVP_PKEY *pkey;
1025
1026 EVP_MD_CTX_init(&mdc_tmp);
1027
1028 if (!PKCS7_type_is_signed(p7) &&
1029 !PKCS7_type_is_signedAndEnveloped(p7)) {
1030 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1031 PKCS7_R_WRONG_PKCS7_TYPE);
1032 goto err;
1033 }
1034
1035 md_type = OBJ_obj2nid(si->digest_alg->algorithm);
1036
1037 btmp = bio;
1038 for (;;) {
1039 if ((btmp == NULL) ||
1040 ((btmp = BIO_find_type(btmp, BIO_TYPE_MD)) == NULL)) {
1041 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1042 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
1043 goto err;
1044 }
1045 BIO_get_md_ctx(btmp, &mdc);
1046 if (mdc == NULL) {
1047 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1048 ERR_R_INTERNAL_ERROR);
1049 goto err;
1050 }
1051 if (EVP_MD_CTX_type(mdc) == md_type)
1052 break;
1053 /* Workaround for some broken clients that put the signature
1054 * OID instead of the digest OID in digest_alg->algorithm
1055 */
1056 if (EVP_MD_pkey_type(EVP_MD_CTX_md(mdc)) == md_type)
1057 break;
1058 btmp = BIO_next(btmp);
1059 }
1060
1061 /* mdc is the digest ctx that we want, unless there are attributes,
1062 * in which case the digest is the signed attributes */
1063 if (!EVP_MD_CTX_copy_ex(&mdc_tmp, mdc))
1064 goto err;
1065
1066 sk = si->auth_attr;
1067 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0)) {
1068 unsigned char md_dat[EVP_MAX_MD_SIZE], *abuf = NULL;
1069 unsigned int md_len;
1070 int alen;
1071 ASN1_OCTET_STRING *message_digest;
1072
1073 if (!EVP_DigestFinal_ex(&mdc_tmp, md_dat, &md_len))
1074 goto err;
1075 message_digest = PKCS7_digest_from_attributes(sk);
1076 if (!message_digest) {
1077 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1078 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
1079 goto err;
1080 }
1081 if ((message_digest->length != (int)md_len) ||
1082 (memcmp(message_digest->data, md_dat, md_len))) {
1083 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1084 PKCS7_R_DIGEST_FAILURE);
1085 ret = -1;
1086 goto err;
1087 }
1088
1089 if (!EVP_VerifyInit_ex(&mdc_tmp, EVP_get_digestbynid(md_type),
1090 NULL))
1091 goto err;
1092
1093 alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf,
1094 ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY));
1095 if (alen <= 0) {
1096 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, ERR_R_ASN1_LIB);
1097 ret = -1;
1098 goto err;
1099 }
1100 if (!EVP_VerifyUpdate(&mdc_tmp, abuf, alen))
1101 goto err;
1102
1103 free(abuf);
1104 }
1105
1106 os = si->enc_digest;
1107 pkey = X509_get_pubkey(x509);
1108 if (!pkey) {
1109 ret = -1;
1110 goto err;
1111 }
1112
1113 i = EVP_VerifyFinal(&mdc_tmp, os->data, os->length, pkey);
1114 EVP_PKEY_free(pkey);
1115 if (i <= 0) {
1116 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
1117 PKCS7_R_SIGNATURE_FAILURE);
1118 ret = -1;
1119 goto err;
1120 } else
1121 ret = 1;
1122err:
1123 EVP_MD_CTX_cleanup(&mdc_tmp);
1124 return (ret);
1125}
1126
1127PKCS7_ISSUER_AND_SERIAL *
1128PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
1129{
1130 STACK_OF(PKCS7_RECIP_INFO) *rsk;
1131 PKCS7_RECIP_INFO *ri;
1132 int i;
1133
1134 i = OBJ_obj2nid(p7->type);
1135 if (i != NID_pkcs7_signedAndEnveloped)
1136 return NULL;
1137 if (p7->d.signed_and_enveloped == NULL)
1138 return NULL;
1139 rsk = p7->d.signed_and_enveloped->recipientinfo;
1140 if (rsk == NULL)
1141 return NULL;
1142 ri = sk_PKCS7_RECIP_INFO_value(rsk, 0);
1143 if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx)
1144 return (NULL);
1145 ri = sk_PKCS7_RECIP_INFO_value(rsk, idx);
1146 return (ri->issuer_and_serial);
1147}
1148
1149ASN1_TYPE *
1150PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid)
1151{
1152 return (get_attribute(si->auth_attr, nid));
1153}
1154
1155ASN1_TYPE *
1156PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid)
1157{
1158 return (get_attribute(si->unauth_attr, nid));
1159}
1160
1161static ASN1_TYPE *
1162get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid)
1163{
1164 int i;
1165 X509_ATTRIBUTE *xa;
1166 ASN1_OBJECT *o;
1167
1168 o = OBJ_nid2obj(nid);
1169 if (!o || !sk)
1170 return (NULL);
1171 for (i = 0; i < sk_X509_ATTRIBUTE_num(sk); i++) {
1172 xa = sk_X509_ATTRIBUTE_value(sk, i);
1173 if (OBJ_cmp(xa->object, o) == 0) {
1174 if (!xa->single && sk_ASN1_TYPE_num(xa->value.set))
1175 return (sk_ASN1_TYPE_value(xa->value.set, 0));
1176 else
1177 return (NULL);
1178 }
1179 }
1180 return (NULL);
1181}
1182
1183ASN1_OCTET_STRING *
1184PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
1185{
1186 ASN1_TYPE *astype;
1187
1188 if (!(astype = get_attribute(sk, NID_pkcs9_messageDigest)))
1189 return NULL;
1190 if (astype->type != V_ASN1_OCTET_STRING)
1191 return NULL;
1192 return astype->value.octet_string;
1193}
1194
1195int
1196PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
1197 STACK_OF(X509_ATTRIBUTE) *sk)
1198{
1199 int i;
1200
1201 if (p7si->auth_attr != NULL)
1202 sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,
1203 X509_ATTRIBUTE_free);
1204 p7si->auth_attr = sk_X509_ATTRIBUTE_dup(sk);
1205 if (p7si->auth_attr == NULL)
1206 return 0;
1207 for (i = 0; i < sk_X509_ATTRIBUTE_num(sk); i++) {
1208 if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr, i,
1209 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk, i))))
1210 == NULL)
1211 return (0);
1212 }
1213 return (1);
1214}
1215
1216int
1217PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
1218{
1219 int i;
1220
1221 if (p7si->unauth_attr != NULL)
1222 sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
1223 X509_ATTRIBUTE_free);
1224 p7si->unauth_attr = sk_X509_ATTRIBUTE_dup(sk);
1225 if (p7si->unauth_attr == NULL)
1226 return 0;
1227 for (i = 0; i < sk_X509_ATTRIBUTE_num(sk); i++) {
1228 if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr, i,
1229 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk, i))))
1230 == NULL)
1231 return (0);
1232 }
1233 return (1);
1234}
1235
1236int
1237PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
1238 void *value)
1239{
1240 return (add_attribute(&(p7si->auth_attr), nid, atrtype, value));
1241}
1242
1243int
1244PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype, void *value)
1245{
1246 return (add_attribute(&(p7si->unauth_attr), nid, atrtype, value));
1247}
1248
1249static int
1250add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype, void *value)
1251{
1252 X509_ATTRIBUTE *attr = NULL;
1253
1254 if (*sk == NULL) {
1255 *sk = sk_X509_ATTRIBUTE_new_null();
1256 if (*sk == NULL)
1257 return 0;
1258new_attrib:
1259 if (!(attr = X509_ATTRIBUTE_create(nid, atrtype, value)))
1260 return 0;
1261 if (!sk_X509_ATTRIBUTE_push(*sk, attr)) {
1262 X509_ATTRIBUTE_free(attr);
1263 return 0;
1264 }
1265 } else {
1266 int i;
1267
1268 for (i = 0; i < sk_X509_ATTRIBUTE_num(*sk); i++) {
1269 attr = sk_X509_ATTRIBUTE_value(*sk, i);
1270 if (OBJ_obj2nid(attr->object) == nid) {
1271 X509_ATTRIBUTE_free(attr);
1272 attr = X509_ATTRIBUTE_create(nid, atrtype,
1273 value);
1274 if (attr == NULL)
1275 return 0;
1276 if (!sk_X509_ATTRIBUTE_set(*sk, i, attr)) {
1277 X509_ATTRIBUTE_free(attr);
1278 return 0;
1279 }
1280 goto end;
1281 }
1282 }
1283 goto new_attrib;
1284 }
1285end:
1286 return (1);
1287}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-12-26 20:09:00 +0000