1 /* $OpenBSD: cms_lib.c,v 1.14 2019/08/12 18:13:13 jsing Exp $ */
2 /*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
4 * project.
5 */
6 /* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 */
54
55 #include <openssl/asn1t.h>
56 #include <openssl/x509v3.h>
57 #include <openssl/err.h>
58 #include <openssl/pem.h>
59 #include <openssl/bio.h>
60 #include <openssl/asn1.h>
61 #include <openssl/cms.h>
62 #include "cms_lcl.h"
63
64
65 CMS_ContentInfo *
d2i_CMS_ContentInfo(CMS_ContentInfo ** a,const unsigned char ** in,long len)66 d2i_CMS_ContentInfo(CMS_ContentInfo **a, const unsigned char **in, long len)
67 {
68 return (CMS_ContentInfo *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
69 &CMS_ContentInfo_it);
70 }
71
72 int
i2d_CMS_ContentInfo(CMS_ContentInfo * a,unsigned char ** out)73 i2d_CMS_ContentInfo(CMS_ContentInfo *a, unsigned char **out)
74 {
75 return ASN1_item_i2d((ASN1_VALUE *)a, out, &CMS_ContentInfo_it);
76 }
77
78 CMS_ContentInfo *
CMS_ContentInfo_new(void)79 CMS_ContentInfo_new(void)
80 {
81 return (CMS_ContentInfo *)ASN1_item_new(&CMS_ContentInfo_it);
82 }
83
84 void
CMS_ContentInfo_free(CMS_ContentInfo * a)85 CMS_ContentInfo_free(CMS_ContentInfo *a)
86 {
87 ASN1_item_free((ASN1_VALUE *)a, &CMS_ContentInfo_it);
88 }
89
90 int
CMS_ContentInfo_print_ctx(BIO * out,CMS_ContentInfo * x,int indent,const ASN1_PCTX * pctx)91 CMS_ContentInfo_print_ctx(BIO *out, CMS_ContentInfo *x, int indent, const ASN1_PCTX *pctx)
92 {
93 return ASN1_item_print(out, (ASN1_VALUE *)x, indent,
94 &CMS_ContentInfo_it, pctx);
95 }
96
97 const ASN1_OBJECT *
CMS_get0_type(const CMS_ContentInfo * cms)98 CMS_get0_type(const CMS_ContentInfo *cms)
99 {
100 return cms->contentType;
101 }
102
103 CMS_ContentInfo *
cms_Data_create(void)104 cms_Data_create(void)
105 {
106 CMS_ContentInfo *cms;
107
108 cms = CMS_ContentInfo_new();
109 if (cms != NULL) {
110 cms->contentType = OBJ_nid2obj(NID_pkcs7_data);
111 /* Never detached */
112 CMS_set_detached(cms, 0);
113 }
114 return cms;
115 }
116
117 BIO *
cms_content_bio(CMS_ContentInfo * cms)118 cms_content_bio(CMS_ContentInfo *cms)
119 {
120 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
121
122 if (!pos)
123 return NULL;
124 /* If content detached data goes nowhere: create NULL BIO */
125 if (!*pos)
126 return BIO_new(BIO_s_null());
127 /*
128 * If content not detached and created return memory BIO
129 */
130 if (!*pos || ((*pos)->flags == ASN1_STRING_FLAG_CONT))
131 return BIO_new(BIO_s_mem());
132
133 /* Else content was read in: return read only BIO for it */
134 return BIO_new_mem_buf((*pos)->data, (*pos)->length);
135 }
136
137 BIO *
CMS_dataInit(CMS_ContentInfo * cms,BIO * icont)138 CMS_dataInit(CMS_ContentInfo *cms, BIO *icont)
139 {
140 BIO *cmsbio, *cont;
141
142 if (icont)
143 cont = icont;
144 else
145 cont = cms_content_bio(cms);
146 if (!cont) {
147 CMSerror(CMS_R_NO_CONTENT);
148 return NULL;
149 }
150 switch (OBJ_obj2nid(cms->contentType)) {
151
152 case NID_pkcs7_data:
153 return cont;
154
155 case NID_pkcs7_signed:
156 cmsbio = cms_SignedData_init_bio(cms);
157 break;
158
159 case NID_pkcs7_digest:
160 cmsbio = cms_DigestedData_init_bio(cms);
161 break;
162 #ifdef ZLIB
163 case NID_id_smime_ct_compressedData:
164 cmsbio = cms_CompressedData_init_bio(cms);
165 break;
166 #endif
167
168 case NID_pkcs7_encrypted:
169 cmsbio = cms_EncryptedData_init_bio(cms);
170 break;
171
172 case NID_pkcs7_enveloped:
173 cmsbio = cms_EnvelopedData_init_bio(cms);
174 break;
175
176 default:
177 CMSerror(CMS_R_UNSUPPORTED_TYPE);
178 return NULL;
179 }
180
181 if (cmsbio)
182 return BIO_push(cmsbio, cont);
183
184 if (!icont)
185 BIO_free(cont);
186
187 return NULL;
188 }
189
190 int
CMS_dataFinal(CMS_ContentInfo * cms,BIO * cmsbio)191 CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
192 {
193 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
194
195 if (!pos)
196 return 0;
197 /* If embedded content find memory BIO and set content */
198 if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT)) {
199 BIO *mbio;
200 unsigned char *cont;
201 long contlen;
202 mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
203 if (!mbio) {
204 CMSerror(CMS_R_CONTENT_NOT_FOUND);
205 return 0;
206 }
207 contlen = BIO_get_mem_data(mbio, &cont);
208 /* Set bio as read only so its content can't be clobbered */
209 BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
210 BIO_set_mem_eof_return(mbio, 0);
211 ASN1_STRING_set0(*pos, cont, contlen);
212 (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
213 }
214
215 switch (OBJ_obj2nid(cms->contentType)) {
216
217 case NID_pkcs7_data:
218 case NID_pkcs7_enveloped:
219 case NID_pkcs7_encrypted:
220 case NID_id_smime_ct_compressedData:
221 /* Nothing to do */
222 return 1;
223
224 case NID_pkcs7_signed:
225 return cms_SignedData_final(cms, cmsbio);
226
227 case NID_pkcs7_digest:
228 return cms_DigestedData_do_final(cms, cmsbio, 0);
229
230 default:
231 CMSerror(CMS_R_UNSUPPORTED_TYPE);
232 return 0;
233 }
234 }
235
236 /*
237 * Return an OCTET STRING pointer to content. This allows it to be accessed
238 * or set later.
239 */
240
241 ASN1_OCTET_STRING **
CMS_get0_content(CMS_ContentInfo * cms)242 CMS_get0_content(CMS_ContentInfo *cms)
243 {
244 switch (OBJ_obj2nid(cms->contentType)) {
245 case NID_pkcs7_data:
246 return &cms->d.data;
247
248 case NID_pkcs7_signed:
249 return &cms->d.signedData->encapContentInfo->eContent;
250
251 case NID_pkcs7_enveloped:
252 return &cms->d.envelopedData->encryptedContentInfo->encryptedContent;
253
254 case NID_pkcs7_digest:
255 return &cms->d.digestedData->encapContentInfo->eContent;
256
257 case NID_pkcs7_encrypted:
258 return &cms->d.encryptedData->encryptedContentInfo->encryptedContent;
259
260 case NID_id_smime_ct_authData:
261 return &cms->d.authenticatedData->encapContentInfo->eContent;
262
263 case NID_id_smime_ct_compressedData:
264 return &cms->d.compressedData->encapContentInfo->eContent;
265
266 default:
267 if (cms->d.other->type == V_ASN1_OCTET_STRING)
268 return &cms->d.other->value.octet_string;
269 CMSerror(CMS_R_UNSUPPORTED_CONTENT_TYPE);
270 return NULL;
271 }
272 }
273
274 /*
275 * Return an ASN1_OBJECT pointer to content type. This allows it to be
276 * accessed or set later.
277 */
278
279 static ASN1_OBJECT **
cms_get0_econtent_type(CMS_ContentInfo * cms)280 cms_get0_econtent_type(CMS_ContentInfo *cms)
281 {
282 switch (OBJ_obj2nid(cms->contentType)) {
283 case NID_pkcs7_signed:
284 return &cms->d.signedData->encapContentInfo->eContentType;
285
286 case NID_pkcs7_enveloped:
287 return &cms->d.envelopedData->encryptedContentInfo->contentType;
288
289 case NID_pkcs7_digest:
290 return &cms->d.digestedData->encapContentInfo->eContentType;
291
292 case NID_pkcs7_encrypted:
293 return &cms->d.encryptedData->encryptedContentInfo->contentType;
294
295 case NID_id_smime_ct_authData:
296 return &cms->d.authenticatedData->encapContentInfo->eContentType;
297
298 case NID_id_smime_ct_compressedData:
299 return &cms->d.compressedData->encapContentInfo->eContentType;
300
301 default:
302 CMSerror(CMS_R_UNSUPPORTED_CONTENT_TYPE);
303 return NULL;
304 }
305 }
306
307 const ASN1_OBJECT *
CMS_get0_eContentType(CMS_ContentInfo * cms)308 CMS_get0_eContentType(CMS_ContentInfo *cms)
309 {
310 ASN1_OBJECT **petype;
311
312 petype = cms_get0_econtent_type(cms);
313 if (petype)
314 return *petype;
315
316 return NULL;
317 }
318
319 int
CMS_set1_eContentType(CMS_ContentInfo * cms,const ASN1_OBJECT * oid)320 CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid)
321 {
322 ASN1_OBJECT **petype, *etype;
323
324 petype = cms_get0_econtent_type(cms);
325 if (!petype)
326 return 0;
327 if (!oid)
328 return 1;
329 etype = OBJ_dup(oid);
330 if (!etype)
331 return 0;
332 ASN1_OBJECT_free(*petype);
333 *petype = etype;
334
335 return 1;
336 }
337
338 int
CMS_is_detached(CMS_ContentInfo * cms)339 CMS_is_detached(CMS_ContentInfo *cms)
340 {
341 ASN1_OCTET_STRING **pos;
342
343 pos = CMS_get0_content(cms);
344 if (!pos)
345 return -1;
346 if (*pos)
347 return 0;
348
349 return 1;
350 }
351
352 int
CMS_set_detached(CMS_ContentInfo * cms,int detached)353 CMS_set_detached(CMS_ContentInfo *cms, int detached)
354 {
355 ASN1_OCTET_STRING **pos;
356
357 pos = CMS_get0_content(cms);
358 if (!pos)
359 return 0;
360 if (detached) {
361 ASN1_OCTET_STRING_free(*pos);
362 *pos = NULL;
363 return 1;
364 }
365 if (*pos == NULL)
366 *pos = ASN1_OCTET_STRING_new();
367 if (*pos != NULL) {
368 /*
369 * NB: special flag to show content is created and not read in.
370 */
371 (*pos)->flags |= ASN1_STRING_FLAG_CONT;
372 return 1;
373 }
374 CMSerror(ERR_R_MALLOC_FAILURE);
375
376 return 0;
377 }
378
379 /* Create a digest BIO from an X509_ALGOR structure */
380
381 BIO *
cms_DigestAlgorithm_init_bio(X509_ALGOR * digestAlgorithm)382 cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm)
383 {
384 BIO *mdbio = NULL;
385 const ASN1_OBJECT *digestoid;
386 const EVP_MD *digest;
387
388 X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
389 digest = EVP_get_digestbyobj(digestoid);
390 if (!digest) {
391 CMSerror(CMS_R_UNKNOWN_DIGEST_ALGORITHM);
392 goto err;
393 }
394 mdbio = BIO_new(BIO_f_md());
395 if (mdbio == NULL || !BIO_set_md(mdbio, digest)) {
396 CMSerror(CMS_R_MD_BIO_INIT_ERROR);
397 goto err;
398 }
399 return mdbio;
400
401 err:
402 BIO_free(mdbio);
403
404 return NULL;
405 }
406
407 /* Locate a message digest content from a BIO chain based on SignerInfo */
408
409 int
cms_DigestAlgorithm_find_ctx(EVP_MD_CTX * mctx,BIO * chain,X509_ALGOR * mdalg)410 cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain, X509_ALGOR *mdalg)
411 {
412 int nid;
413 const ASN1_OBJECT *mdoid;
414
415 X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
416 nid = OBJ_obj2nid(mdoid);
417 /* Look for digest type to match signature */
418 for (;;) {
419 EVP_MD_CTX *mtmp;
420 chain = BIO_find_type(chain, BIO_TYPE_MD);
421 if (chain == NULL) {
422 CMSerror(CMS_R_NO_MATCHING_DIGEST);
423 return 0;
424 }
425 BIO_get_md_ctx(chain, &mtmp);
426 if (EVP_MD_CTX_type(mtmp) == nid
427 /*
428 * Workaround for broken implementations that use signature
429 * algorithm OID instead of digest.
430 */
431 || EVP_MD_pkey_type(EVP_MD_CTX_md(mtmp)) == nid)
432 return EVP_MD_CTX_copy_ex(mctx, mtmp);
433 chain = BIO_next(chain);
434 }
435 }
436
STACK_OF(CMS_CertificateChoices)437 static STACK_OF(CMS_CertificateChoices) **
438 cms_get0_certificate_choices(CMS_ContentInfo *cms)
439 {
440 switch (OBJ_obj2nid(cms->contentType)) {
441 case NID_pkcs7_signed:
442 return &cms->d.signedData->certificates;
443
444 case NID_pkcs7_enveloped:
445 if (cms->d.envelopedData->originatorInfo == NULL)
446 return NULL;
447 return &cms->d.envelopedData->originatorInfo->certificates;
448
449 default:
450 CMSerror(CMS_R_UNSUPPORTED_CONTENT_TYPE);
451 return NULL;
452 }
453 }
454
455 CMS_CertificateChoices *
CMS_add0_CertificateChoices(CMS_ContentInfo * cms)456 CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
457 {
458 STACK_OF(CMS_CertificateChoices) **pcerts;
459 CMS_CertificateChoices *cch;
460
461 pcerts = cms_get0_certificate_choices(cms);
462 if (!pcerts)
463 return NULL;
464 if (!*pcerts)
465 *pcerts = sk_CMS_CertificateChoices_new_null();
466 if (!*pcerts)
467 return NULL;
468 cch = (CMS_CertificateChoices *)ASN1_item_new(&CMS_CertificateChoices_it);
469 if (!cch)
470 return NULL;
471 if (!sk_CMS_CertificateChoices_push(*pcerts, cch)) {
472 ASN1_item_free((ASN1_VALUE *)cch, &CMS_CertificateChoices_it);
473 return NULL;
474 }
475
476 return cch;
477 }
478
479 int
CMS_add0_cert(CMS_ContentInfo * cms,X509 * cert)480 CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
481 {
482 CMS_CertificateChoices *cch;
483 STACK_OF(CMS_CertificateChoices) **pcerts;
484 int i;
485
486 pcerts = cms_get0_certificate_choices(cms);
487 if (!pcerts)
488 return 0;
489 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
490 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
491 if (cch->type == CMS_CERTCHOICE_CERT) {
492 if (!X509_cmp(cch->d.certificate, cert)) {
493 CMSerror(CMS_R_CERTIFICATE_ALREADY_PRESENT);
494 return 0;
495 }
496 }
497 }
498 cch = CMS_add0_CertificateChoices(cms);
499 if (!cch)
500 return 0;
501 cch->type = CMS_CERTCHOICE_CERT;
502 cch->d.certificate = cert;
503
504 return 1;
505 }
506
507 int
CMS_add1_cert(CMS_ContentInfo * cms,X509 * cert)508 CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
509 {
510 int r;
511
512 r = CMS_add0_cert(cms, cert);
513 if (r > 0)
514 X509_up_ref(cert);
515
516 return r;
517 }
518
STACK_OF(CMS_RevocationInfoChoice)519 static STACK_OF(CMS_RevocationInfoChoice) **
520 cms_get0_revocation_choices(CMS_ContentInfo *cms)
521 {
522 switch (OBJ_obj2nid(cms->contentType)) {
523 case NID_pkcs7_signed:
524 return &cms->d.signedData->crls;
525
526 case NID_pkcs7_enveloped:
527 if (cms->d.envelopedData->originatorInfo == NULL)
528 return NULL;
529 return &cms->d.envelopedData->originatorInfo->crls;
530
531 default:
532 CMSerror(CMS_R_UNSUPPORTED_CONTENT_TYPE);
533 return NULL;
534 }
535 }
536
537 CMS_RevocationInfoChoice *
CMS_add0_RevocationInfoChoice(CMS_ContentInfo * cms)538 CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
539 {
540 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
541 CMS_RevocationInfoChoice *rch;
542
543 pcrls = cms_get0_revocation_choices(cms);
544 if (!pcrls)
545 return NULL;
546 if (!*pcrls)
547 *pcrls = sk_CMS_RevocationInfoChoice_new_null();
548 if (!*pcrls)
549 return NULL;
550 rch = (CMS_RevocationInfoChoice *)ASN1_item_new(&CMS_RevocationInfoChoice_it);
551 if (!rch)
552 return NULL;
553 if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch)) {
554 ASN1_item_free((ASN1_VALUE *)rch, &CMS_RevocationInfoChoice_it);
555 return NULL;
556 }
557
558 return rch;
559 }
560
561 int
CMS_add0_crl(CMS_ContentInfo * cms,X509_CRL * crl)562 CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
563 {
564 CMS_RevocationInfoChoice *rch;
565
566 rch = CMS_add0_RevocationInfoChoice(cms);
567 if (!rch)
568 return 0;
569 rch->type = CMS_REVCHOICE_CRL;
570 rch->d.crl = crl;
571
572 return 1;
573 }
574
575 int
CMS_add1_crl(CMS_ContentInfo * cms,X509_CRL * crl)576 CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl)
577 {
578 int r;
579
580 r = CMS_add0_crl(cms, crl);
581 if (r > 0)
582 X509_CRL_up_ref(crl);
583
584 return r;
585 }
586
STACK_OF(X509)587 STACK_OF(X509) *
588 CMS_get1_certs(CMS_ContentInfo *cms)
589 {
590 STACK_OF(X509) *certs = NULL;
591 CMS_CertificateChoices *cch;
592 STACK_OF(CMS_CertificateChoices) **pcerts;
593 int i;
594
595 pcerts = cms_get0_certificate_choices(cms);
596 if (!pcerts)
597 return NULL;
598 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
599 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
600 if (cch->type == 0) {
601 if (!certs) {
602 certs = sk_X509_new_null();
603 if (!certs)
604 return NULL;
605 }
606 if (!sk_X509_push(certs, cch->d.certificate)) {
607 sk_X509_pop_free(certs, X509_free);
608 return NULL;
609 }
610 X509_up_ref(cch->d.certificate);
611 }
612 }
613 return certs;
614 }
615
STACK_OF(X509_CRL)616 STACK_OF(X509_CRL) *
617 CMS_get1_crls(CMS_ContentInfo *cms)
618 {
619 STACK_OF(X509_CRL) *crls = NULL;
620 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
621 CMS_RevocationInfoChoice *rch;
622 int i;
623
624 pcrls = cms_get0_revocation_choices(cms);
625 if (!pcrls)
626 return NULL;
627 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(*pcrls); i++) {
628 rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
629 if (rch->type == 0) {
630 if (!crls) {
631 crls = sk_X509_CRL_new_null();
632 if (!crls)
633 return NULL;
634 }
635 if (!sk_X509_CRL_push(crls, rch->d.crl)) {
636 sk_X509_CRL_pop_free(crls, X509_CRL_free);
637 return NULL;
638 }
639 X509_CRL_up_ref(rch->d.crl);
640 }
641 }
642 return crls;
643 }
644
645 static const ASN1_OCTET_STRING *
cms_X509_get0_subject_key_id(X509 * x)646 cms_X509_get0_subject_key_id(X509 *x)
647 {
648 /* Call for side-effect of computing hash and caching extensions */
649 X509_check_purpose(x, -1, -1);
650 return x->skid;
651 }
652
653 int
cms_ias_cert_cmp(CMS_IssuerAndSerialNumber * ias,X509 * cert)654 cms_ias_cert_cmp(CMS_IssuerAndSerialNumber *ias, X509 *cert)
655 {
656 int ret;
657
658 ret = X509_NAME_cmp(ias->issuer, X509_get_issuer_name(cert));
659 if (ret)
660 return ret;
661
662 return ASN1_INTEGER_cmp(ias->serialNumber, X509_get_serialNumber(cert));
663 }
664
665 int
cms_keyid_cert_cmp(ASN1_OCTET_STRING * keyid,X509 * cert)666 cms_keyid_cert_cmp(ASN1_OCTET_STRING *keyid, X509 *cert)
667 {
668 const ASN1_OCTET_STRING *cert_keyid = cms_X509_get0_subject_key_id(cert);
669
670 if (cert_keyid == NULL)
671 return -1;
672
673 return ASN1_OCTET_STRING_cmp(keyid, cert_keyid);
674 }
675
676 int
cms_set1_ias(CMS_IssuerAndSerialNumber ** pias,X509 * cert)677 cms_set1_ias(CMS_IssuerAndSerialNumber **pias, X509 *cert)
678 {
679 CMS_IssuerAndSerialNumber *ias;
680
681 ias = (CMS_IssuerAndSerialNumber *)ASN1_item_new(&CMS_IssuerAndSerialNumber_it);
682 if (!ias)
683 goto err;
684 if (!X509_NAME_set(&ias->issuer, X509_get_issuer_name(cert)))
685 goto err;
686 if (!ASN1_STRING_copy(ias->serialNumber, X509_get_serialNumber(cert)))
687 goto err;
688 ASN1_item_free((ASN1_VALUE *)*pias, &CMS_IssuerAndSerialNumber_it);
689 *pias = ias;
690
691 return 1;
692
693 err:
694 ASN1_item_free((ASN1_VALUE *)ias, &CMS_IssuerAndSerialNumber_it);
695 CMSerror(ERR_R_MALLOC_FAILURE);
696
697 return 0;
698 }
699
700 int
cms_set1_keyid(ASN1_OCTET_STRING ** pkeyid,X509 * cert)701 cms_set1_keyid(ASN1_OCTET_STRING **pkeyid, X509 *cert)
702 {
703 ASN1_OCTET_STRING *keyid = NULL;
704 const ASN1_OCTET_STRING *cert_keyid;
705
706 cert_keyid = cms_X509_get0_subject_key_id(cert);
707 if (cert_keyid == NULL) {
708 CMSerror(CMS_R_CERTIFICATE_HAS_NO_KEYID);
709 return 0;
710 }
711 keyid = ASN1_STRING_dup(cert_keyid);
712 if (!keyid) {
713 CMSerror(ERR_R_MALLOC_FAILURE);
714 return 0;
715 }
716 ASN1_OCTET_STRING_free(*pkeyid);
717 *pkeyid = keyid;
718
719 return 1;
720 }
721