1 /*
2 * Copyright 2008-2024 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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 #include <openssl/asn1t.h>
11 #include <openssl/x509v3.h>
12 #include <openssl/err.h>
13 #include <openssl/pem.h>
14 #include <openssl/bio.h>
15 #include <openssl/asn1.h>
16 #include <openssl/cms.h>
17 #include "internal/sizes.h"
18 #include "crypto/x509.h"
19 #include "cms_local.h"
20
21 static STACK_OF(CMS_CertificateChoices)
22 **cms_get0_certificate_choices(CMS_ContentInfo *cms);
23
24 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(CMS_ContentInfo)
IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo)25 IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo)
26
27 CMS_ContentInfo *d2i_CMS_ContentInfo(CMS_ContentInfo **a,
28 const unsigned char **in, long len)
29 {
30 CMS_ContentInfo *ci;
31 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(a == NULL ? NULL : *a);
32
33 ci = (CMS_ContentInfo *)ASN1_item_d2i_ex((ASN1_VALUE **)a, in, len,
34 (CMS_ContentInfo_it()),
35 ossl_cms_ctx_get0_libctx(ctx),
36 ossl_cms_ctx_get0_propq(ctx));
37 if (ci != NULL) {
38 ERR_set_mark();
39 ossl_cms_resolve_libctx(ci);
40 ERR_pop_to_mark();
41 }
42 return ci;
43 }
44
i2d_CMS_ContentInfo(const CMS_ContentInfo * a,unsigned char ** out)45 int i2d_CMS_ContentInfo(const CMS_ContentInfo *a, unsigned char **out)
46 {
47 return ASN1_item_i2d((const ASN1_VALUE *)a, out, (CMS_ContentInfo_it()));
48 }
49
CMS_ContentInfo_new_ex(OSSL_LIB_CTX * libctx,const char * propq)50 CMS_ContentInfo *CMS_ContentInfo_new_ex(OSSL_LIB_CTX *libctx, const char *propq)
51 {
52 CMS_ContentInfo *ci;
53
54 ci = (CMS_ContentInfo *)ASN1_item_new_ex(ASN1_ITEM_rptr(CMS_ContentInfo),
55 libctx, propq);
56 if (ci != NULL) {
57 ci->ctx.libctx = libctx;
58 ci->ctx.propq = NULL;
59 if (propq != NULL) {
60 ci->ctx.propq = OPENSSL_strdup(propq);
61 if (ci->ctx.propq == NULL) {
62 CMS_ContentInfo_free(ci);
63 ci = NULL;
64 }
65 }
66 }
67 return ci;
68 }
69
ossl_cms_get0_cmsctx(const CMS_ContentInfo * cms)70 const CMS_CTX *ossl_cms_get0_cmsctx(const CMS_ContentInfo *cms)
71 {
72 return cms != NULL ? &cms->ctx : NULL;
73 }
74
ossl_cms_ctx_get0_libctx(const CMS_CTX * ctx)75 OSSL_LIB_CTX *ossl_cms_ctx_get0_libctx(const CMS_CTX *ctx)
76 {
77 return ctx != NULL ? ctx->libctx : NULL;
78 }
79
ossl_cms_ctx_get0_propq(const CMS_CTX * ctx)80 const char *ossl_cms_ctx_get0_propq(const CMS_CTX *ctx)
81 {
82 return ctx != NULL ? ctx->propq : NULL;
83 }
84
ossl_cms_resolve_libctx(CMS_ContentInfo * ci)85 void ossl_cms_resolve_libctx(CMS_ContentInfo *ci)
86 {
87 int i;
88 CMS_CertificateChoices *cch;
89 STACK_OF(CMS_CertificateChoices) **pcerts;
90 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(ci);
91 OSSL_LIB_CTX *libctx = ossl_cms_ctx_get0_libctx(ctx);
92 const char *propq = ossl_cms_ctx_get0_propq(ctx);
93
94 ossl_cms_SignerInfos_set_cmsctx(ci);
95 ossl_cms_RecipientInfos_set_cmsctx(ci);
96
97 pcerts = cms_get0_certificate_choices(ci);
98 if (pcerts != NULL) {
99 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
100 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
101 if (cch->type == CMS_CERTCHOICE_CERT)
102 ossl_x509_set0_libctx(cch->d.certificate, libctx, propq);
103 }
104 }
105 }
106
CMS_get0_type(const CMS_ContentInfo * cms)107 const ASN1_OBJECT *CMS_get0_type(const CMS_ContentInfo *cms)
108 {
109 return cms->contentType;
110 }
111
ossl_cms_Data_create(OSSL_LIB_CTX * libctx,const char * propq)112 CMS_ContentInfo *ossl_cms_Data_create(OSSL_LIB_CTX *libctx, const char *propq)
113 {
114 CMS_ContentInfo *cms = CMS_ContentInfo_new_ex(libctx, propq);
115
116 if (cms != NULL) {
117 cms->contentType = OBJ_nid2obj(NID_pkcs7_data);
118 /* Never detached */
119 CMS_set_detached(cms, 0);
120 }
121 return cms;
122 }
123
ossl_cms_content_bio(CMS_ContentInfo * cms)124 BIO *ossl_cms_content_bio(CMS_ContentInfo *cms)
125 {
126 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
127
128 if (pos == NULL)
129 return NULL;
130 /* If content detached data goes nowhere: create NULL BIO */
131 if (*pos == NULL)
132 return BIO_new(BIO_s_null());
133 /*
134 * If content not detached and created return memory BIO
135 */
136 if (*pos == NULL || ((*pos)->flags == ASN1_STRING_FLAG_CONT))
137 return BIO_new(BIO_s_mem());
138 /* Else content was read in: return read only BIO for it */
139 return BIO_new_mem_buf((*pos)->data, (*pos)->length);
140 }
141
CMS_dataInit(CMS_ContentInfo * cms,BIO * icont)142 BIO *CMS_dataInit(CMS_ContentInfo *cms, BIO *icont)
143 {
144 BIO *cmsbio, *cont;
145 if (icont)
146 cont = icont;
147 else
148 cont = ossl_cms_content_bio(cms);
149 if (!cont) {
150 ERR_raise(ERR_LIB_CMS, CMS_R_NO_CONTENT);
151 return NULL;
152 }
153 switch (OBJ_obj2nid(cms->contentType)) {
154
155 case NID_pkcs7_data:
156 return cont;
157
158 case NID_pkcs7_signed:
159 cmsbio = ossl_cms_SignedData_init_bio(cms);
160 break;
161
162 case NID_pkcs7_digest:
163 cmsbio = ossl_cms_DigestedData_init_bio(cms);
164 break;
165 #ifndef OPENSSL_NO_ZLIB
166 case NID_id_smime_ct_compressedData:
167 cmsbio = ossl_cms_CompressedData_init_bio(cms);
168 break;
169 #endif
170
171 case NID_pkcs7_encrypted:
172 cmsbio = ossl_cms_EncryptedData_init_bio(cms);
173 break;
174
175 case NID_pkcs7_enveloped:
176 cmsbio = ossl_cms_EnvelopedData_init_bio(cms);
177 break;
178
179 case NID_id_smime_ct_authEnvelopedData:
180 cmsbio = ossl_cms_AuthEnvelopedData_init_bio(cms);
181 break;
182
183 default:
184 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_TYPE);
185 goto err;
186 }
187
188 if (cmsbio)
189 return BIO_push(cmsbio, cont);
190 err:
191 if (!icont)
192 BIO_free(cont);
193 return NULL;
194
195 }
196
197 /* unfortunately cannot constify SMIME_write_ASN1() due to this function */
CMS_dataFinal(CMS_ContentInfo * cms,BIO * cmsbio)198 int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
199 {
200 return ossl_cms_DataFinal(cms, cmsbio, NULL, 0);
201 }
202
ossl_cms_DataFinal(CMS_ContentInfo * cms,BIO * cmsbio,const unsigned char * precomp_md,unsigned int precomp_mdlen)203 int ossl_cms_DataFinal(CMS_ContentInfo *cms, BIO *cmsbio,
204 const unsigned char *precomp_md,
205 unsigned int precomp_mdlen)
206 {
207 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
208
209 if (pos == NULL)
210 return 0;
211 /* If embedded content find memory BIO and set content */
212 if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT)) {
213 BIO *mbio;
214 unsigned char *cont;
215 long contlen;
216 mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
217 if (!mbio) {
218 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_NOT_FOUND);
219 return 0;
220 }
221 contlen = BIO_get_mem_data(mbio, &cont);
222 /* Set bio as read only so its content can't be clobbered */
223 BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
224 BIO_set_mem_eof_return(mbio, 0);
225 ASN1_STRING_set0(*pos, cont, contlen);
226 (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
227 }
228
229 switch (OBJ_obj2nid(cms->contentType)) {
230
231 case NID_pkcs7_data:
232 case NID_pkcs7_encrypted:
233 case NID_id_smime_ct_compressedData:
234 /* Nothing to do */
235 return 1;
236
237 case NID_pkcs7_enveloped:
238 return ossl_cms_EnvelopedData_final(cms, cmsbio);
239
240 case NID_id_smime_ct_authEnvelopedData:
241 return ossl_cms_AuthEnvelopedData_final(cms, cmsbio);
242
243 case NID_pkcs7_signed:
244 return ossl_cms_SignedData_final(cms, cmsbio, precomp_md, precomp_mdlen);
245
246 case NID_pkcs7_digest:
247 return ossl_cms_DigestedData_do_final(cms, cmsbio, 0);
248
249 default:
250 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_TYPE);
251 return 0;
252 }
253 }
254
255 /*
256 * Return an OCTET STRING pointer to content. This allows it to be accessed
257 * or set later.
258 */
259
CMS_get0_content(CMS_ContentInfo * cms)260 ASN1_OCTET_STRING **CMS_get0_content(CMS_ContentInfo *cms)
261 {
262 switch (OBJ_obj2nid(cms->contentType)) {
263
264 case NID_pkcs7_data:
265 return &cms->d.data;
266
267 case NID_pkcs7_signed:
268 return &cms->d.signedData->encapContentInfo->eContent;
269
270 case NID_pkcs7_enveloped:
271 return &cms->d.envelopedData->encryptedContentInfo->encryptedContent;
272
273 case NID_pkcs7_digest:
274 return &cms->d.digestedData->encapContentInfo->eContent;
275
276 case NID_pkcs7_encrypted:
277 return &cms->d.encryptedData->encryptedContentInfo->encryptedContent;
278
279 case NID_id_smime_ct_authEnvelopedData:
280 return &cms->d.authEnvelopedData->authEncryptedContentInfo
281 ->encryptedContent;
282
283 case NID_id_smime_ct_authData:
284 return &cms->d.authenticatedData->encapContentInfo->eContent;
285
286 case NID_id_smime_ct_compressedData:
287 return &cms->d.compressedData->encapContentInfo->eContent;
288
289 default:
290 if (cms->d.other->type == V_ASN1_OCTET_STRING)
291 return &cms->d.other->value.octet_string;
292 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE);
293 return NULL;
294
295 }
296 }
297
298 /*
299 * Return an ASN1_OBJECT pointer to content type. This allows it to be
300 * accessed or set later.
301 */
302
cms_get0_econtent_type(CMS_ContentInfo * cms)303 static ASN1_OBJECT **cms_get0_econtent_type(CMS_ContentInfo *cms)
304 {
305 switch (OBJ_obj2nid(cms->contentType)) {
306
307 case NID_pkcs7_signed:
308 return &cms->d.signedData->encapContentInfo->eContentType;
309
310 case NID_pkcs7_enveloped:
311 return &cms->d.envelopedData->encryptedContentInfo->contentType;
312
313 case NID_pkcs7_digest:
314 return &cms->d.digestedData->encapContentInfo->eContentType;
315
316 case NID_pkcs7_encrypted:
317 return &cms->d.encryptedData->encryptedContentInfo->contentType;
318
319 case NID_id_smime_ct_authEnvelopedData:
320 return &cms->d.authEnvelopedData->authEncryptedContentInfo
321 ->contentType;
322 case NID_id_smime_ct_authData:
323 return &cms->d.authenticatedData->encapContentInfo->eContentType;
324
325 case NID_id_smime_ct_compressedData:
326 return &cms->d.compressedData->encapContentInfo->eContentType;
327
328 default:
329 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE);
330 return NULL;
331
332 }
333 }
334
CMS_get0_eContentType(CMS_ContentInfo * cms)335 const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms)
336 {
337 ASN1_OBJECT **petype;
338 petype = cms_get0_econtent_type(cms);
339 if (petype)
340 return *petype;
341 return NULL;
342 }
343
CMS_set1_eContentType(CMS_ContentInfo * cms,const ASN1_OBJECT * oid)344 int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid)
345 {
346 ASN1_OBJECT **petype, *etype;
347
348 petype = cms_get0_econtent_type(cms);
349 if (petype == NULL)
350 return 0;
351 if (oid == NULL)
352 return 1;
353 etype = OBJ_dup(oid);
354 if (etype == NULL)
355 return 0;
356 ASN1_OBJECT_free(*petype);
357 *petype = etype;
358 return 1;
359 }
360
CMS_is_detached(CMS_ContentInfo * cms)361 int CMS_is_detached(CMS_ContentInfo *cms)
362 {
363 ASN1_OCTET_STRING **pos;
364
365 pos = CMS_get0_content(cms);
366 if (pos == NULL)
367 return -1;
368 if (*pos != NULL)
369 return 0;
370 return 1;
371 }
372
CMS_set_detached(CMS_ContentInfo * cms,int detached)373 int CMS_set_detached(CMS_ContentInfo *cms, int detached)
374 {
375 ASN1_OCTET_STRING **pos;
376
377 pos = CMS_get0_content(cms);
378 if (pos == NULL)
379 return 0;
380 if (detached) {
381 ASN1_OCTET_STRING_free(*pos);
382 *pos = NULL;
383 return 1;
384 }
385 if (*pos == NULL)
386 *pos = ASN1_OCTET_STRING_new();
387 if (*pos != NULL) {
388 /*
389 * NB: special flag to show content is created and not read in.
390 */
391 (*pos)->flags |= ASN1_STRING_FLAG_CONT;
392 return 1;
393 }
394 ERR_raise(ERR_LIB_CMS, ERR_R_ASN1_LIB);
395 return 0;
396 }
397
398 /* Create a digest BIO from an X509_ALGOR structure */
399
ossl_cms_DigestAlgorithm_init_bio(X509_ALGOR * digestAlgorithm,const CMS_CTX * ctx)400 BIO *ossl_cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm,
401 const CMS_CTX *ctx)
402 {
403 BIO *mdbio = NULL;
404 const ASN1_OBJECT *digestoid;
405 const EVP_MD *digest = NULL;
406 EVP_MD *fetched_digest = NULL;
407 char alg[OSSL_MAX_NAME_SIZE];
408
409 X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
410 OBJ_obj2txt(alg, sizeof(alg), digestoid, 0);
411
412 (void)ERR_set_mark();
413 fetched_digest = EVP_MD_fetch(ossl_cms_ctx_get0_libctx(ctx), alg,
414 ossl_cms_ctx_get0_propq(ctx));
415
416 if (fetched_digest != NULL)
417 digest = fetched_digest;
418 else
419 digest = EVP_get_digestbyobj(digestoid);
420 if (digest == NULL) {
421 (void)ERR_clear_last_mark();
422 ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_DIGEST_ALGORITHM);
423 goto err;
424 }
425 (void)ERR_pop_to_mark();
426
427 mdbio = BIO_new(BIO_f_md());
428 if (mdbio == NULL || BIO_set_md(mdbio, digest) <= 0) {
429 ERR_raise(ERR_LIB_CMS, CMS_R_MD_BIO_INIT_ERROR);
430 goto err;
431 }
432 EVP_MD_free(fetched_digest);
433 return mdbio;
434 err:
435 EVP_MD_free(fetched_digest);
436 BIO_free(mdbio);
437 return NULL;
438 }
439
440 /* Locate a message digest content from a BIO chain based on SignerInfo */
441
ossl_cms_DigestAlgorithm_find_ctx(EVP_MD_CTX * mctx,BIO * chain,X509_ALGOR * mdalg)442 int ossl_cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
443 X509_ALGOR *mdalg)
444 {
445 int nid;
446 const ASN1_OBJECT *mdoid;
447 X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
448 nid = OBJ_obj2nid(mdoid);
449 /* Look for digest type to match signature */
450 for (;;) {
451 EVP_MD_CTX *mtmp;
452 chain = BIO_find_type(chain, BIO_TYPE_MD);
453 if (chain == NULL) {
454 ERR_raise(ERR_LIB_CMS, CMS_R_NO_MATCHING_DIGEST);
455 return 0;
456 }
457 BIO_get_md_ctx(chain, &mtmp);
458 if (EVP_MD_CTX_get_type(mtmp) == nid
459 /*
460 * Workaround for broken implementations that use signature
461 * algorithm OID instead of digest.
462 */
463 || EVP_MD_get_pkey_type(EVP_MD_CTX_get0_md(mtmp)) == nid)
464 return EVP_MD_CTX_copy_ex(mctx, mtmp);
465 chain = BIO_next(chain);
466 }
467 }
468
STACK_OF(CMS_CertificateChoices)469 static STACK_OF(CMS_CertificateChoices)
470 **cms_get0_certificate_choices(CMS_ContentInfo *cms)
471 {
472 switch (OBJ_obj2nid(cms->contentType)) {
473
474 case NID_pkcs7_signed:
475 return &cms->d.signedData->certificates;
476
477 case NID_pkcs7_enveloped:
478 if (cms->d.envelopedData->originatorInfo == NULL)
479 return NULL;
480 return &cms->d.envelopedData->originatorInfo->certificates;
481
482 case NID_id_smime_ct_authEnvelopedData:
483 if (cms->d.authEnvelopedData->originatorInfo == NULL)
484 return NULL;
485 return &cms->d.authEnvelopedData->originatorInfo->certificates;
486
487 default:
488 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE);
489 return NULL;
490
491 }
492 }
493
CMS_add0_CertificateChoices(CMS_ContentInfo * cms)494 CMS_CertificateChoices *CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
495 {
496 STACK_OF(CMS_CertificateChoices) **pcerts;
497 CMS_CertificateChoices *cch;
498
499 pcerts = cms_get0_certificate_choices(cms);
500 if (pcerts == NULL)
501 return NULL;
502 if (*pcerts == NULL)
503 *pcerts = sk_CMS_CertificateChoices_new_null();
504 if (*pcerts == NULL)
505 return NULL;
506 cch = M_ASN1_new_of(CMS_CertificateChoices);
507 if (!cch)
508 return NULL;
509 if (!sk_CMS_CertificateChoices_push(*pcerts, cch)) {
510 M_ASN1_free_of(cch, CMS_CertificateChoices);
511 return NULL;
512 }
513 return cch;
514 }
515
CMS_add0_cert(CMS_ContentInfo * cms,X509 * cert)516 int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
517 {
518 CMS_CertificateChoices *cch;
519 STACK_OF(CMS_CertificateChoices) **pcerts;
520 int i;
521
522 pcerts = cms_get0_certificate_choices(cms);
523 if (pcerts == NULL)
524 return 0;
525 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
526 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
527 if (cch->type == CMS_CERTCHOICE_CERT) {
528 if (X509_cmp(cch->d.certificate, cert) == 0) {
529 X509_free(cert);
530 return 1; /* cert already present */
531 }
532 }
533 }
534 cch = CMS_add0_CertificateChoices(cms);
535 if (!cch)
536 return 0;
537 cch->type = CMS_CERTCHOICE_CERT;
538 cch->d.certificate = cert;
539 return 1;
540 }
541
CMS_add1_cert(CMS_ContentInfo * cms,X509 * cert)542 int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
543 {
544 if (!X509_up_ref(cert))
545 return 0;
546 if (CMS_add0_cert(cms, cert))
547 return 1;
548 X509_free(cert);
549 return 0;
550 }
551
STACK_OF(CMS_RevocationInfoChoice)552 static STACK_OF(CMS_RevocationInfoChoice)
553 **cms_get0_revocation_choices(CMS_ContentInfo *cms)
554 {
555 switch (OBJ_obj2nid(cms->contentType)) {
556
557 case NID_pkcs7_signed:
558 return &cms->d.signedData->crls;
559
560 case NID_pkcs7_enveloped:
561 if (cms->d.envelopedData->originatorInfo == NULL)
562 return NULL;
563 return &cms->d.envelopedData->originatorInfo->crls;
564
565 case NID_id_smime_ct_authEnvelopedData:
566 if (cms->d.authEnvelopedData->originatorInfo == NULL)
567 return NULL;
568 return &cms->d.authEnvelopedData->originatorInfo->crls;
569
570 default:
571 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE);
572 return NULL;
573
574 }
575 }
576
CMS_add0_RevocationInfoChoice(CMS_ContentInfo * cms)577 CMS_RevocationInfoChoice *CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
578 {
579 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
580 CMS_RevocationInfoChoice *rch;
581
582 pcrls = cms_get0_revocation_choices(cms);
583 if (pcrls == NULL)
584 return NULL;
585 if (*pcrls == NULL)
586 *pcrls = sk_CMS_RevocationInfoChoice_new_null();
587 if (*pcrls == NULL)
588 return NULL;
589 rch = M_ASN1_new_of(CMS_RevocationInfoChoice);
590 if (rch == NULL)
591 return NULL;
592 if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch)) {
593 M_ASN1_free_of(rch, CMS_RevocationInfoChoice);
594 return NULL;
595 }
596 return rch;
597 }
598
CMS_add0_crl(CMS_ContentInfo * cms,X509_CRL * crl)599 int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
600 {
601 CMS_RevocationInfoChoice *rch = CMS_add0_RevocationInfoChoice(cms);
602
603 if (rch == NULL)
604 return 0;
605 rch->type = CMS_REVCHOICE_CRL;
606 rch->d.crl = crl;
607 return 1;
608 }
609
CMS_add1_crl(CMS_ContentInfo * cms,X509_CRL * crl)610 int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl)
611 {
612 if (!X509_CRL_up_ref(crl))
613 return 0;
614 if (CMS_add0_crl(cms, crl))
615 return 1;
616 X509_CRL_free(crl);
617 return 0;
618 }
619
STACK_OF(X509)620 STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms)
621 {
622 STACK_OF(X509) *certs = NULL;
623 CMS_CertificateChoices *cch;
624 STACK_OF(CMS_CertificateChoices) **pcerts;
625 int i, n;
626
627 pcerts = cms_get0_certificate_choices(cms);
628 if (pcerts == NULL)
629 return NULL;
630
631 /* make sure to return NULL only on error */
632 n = sk_CMS_CertificateChoices_num(*pcerts);
633 if ((certs = sk_X509_new_reserve(NULL, n)) == NULL)
634 return NULL;
635
636 for (i = 0; i < n; i++) {
637 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
638 if (cch->type == 0) {
639 if (!ossl_x509_add_cert_new(&certs, cch->d.certificate,
640 X509_ADD_FLAG_UP_REF)) {
641 OSSL_STACK_OF_X509_free(certs);
642 return NULL;
643 }
644 }
645 }
646 return certs;
647 }
648
STACK_OF(X509_CRL)649 STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms)
650 {
651 STACK_OF(X509_CRL) *crls = NULL;
652 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
653 CMS_RevocationInfoChoice *rch;
654 int i, n;
655
656 pcrls = cms_get0_revocation_choices(cms);
657 if (pcrls == NULL)
658 return NULL;
659
660 /* make sure to return NULL only on error */
661 n = sk_CMS_RevocationInfoChoice_num(*pcrls);
662 if ((crls = sk_X509_CRL_new_reserve(NULL, n)) == NULL)
663 return NULL;
664
665 for (i = 0; i < n; i++) {
666 rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
667 if (rch->type == 0) {
668 if (!sk_X509_CRL_push(crls, rch->d.crl)
669 || !X509_CRL_up_ref(rch->d.crl)) {
670 sk_X509_CRL_pop_free(crls, X509_CRL_free);
671 return NULL;
672 }
673 }
674 }
675 return crls;
676 }
677
ossl_cms_ias_cert_cmp(CMS_IssuerAndSerialNumber * ias,X509 * cert)678 int ossl_cms_ias_cert_cmp(CMS_IssuerAndSerialNumber *ias, X509 *cert)
679 {
680 int ret;
681 ret = X509_NAME_cmp(ias->issuer, X509_get_issuer_name(cert));
682 if (ret)
683 return ret;
684 return ASN1_INTEGER_cmp(ias->serialNumber, X509_get0_serialNumber(cert));
685 }
686
ossl_cms_keyid_cert_cmp(ASN1_OCTET_STRING * keyid,X509 * cert)687 int ossl_cms_keyid_cert_cmp(ASN1_OCTET_STRING *keyid, X509 *cert)
688 {
689 const ASN1_OCTET_STRING *cert_keyid = X509_get0_subject_key_id(cert);
690
691 if (cert_keyid == NULL)
692 return -1;
693 return ASN1_OCTET_STRING_cmp(keyid, cert_keyid);
694 }
695
ossl_cms_set1_ias(CMS_IssuerAndSerialNumber ** pias,X509 * cert)696 int ossl_cms_set1_ias(CMS_IssuerAndSerialNumber **pias, X509 *cert)
697 {
698 CMS_IssuerAndSerialNumber *ias;
699 ias = M_ASN1_new_of(CMS_IssuerAndSerialNumber);
700 if (!ias) {
701 ERR_raise(ERR_LIB_CMS, ERR_R_ASN1_LIB);
702 goto err;
703 }
704 if (!X509_NAME_set(&ias->issuer, X509_get_issuer_name(cert))) {
705 ERR_raise(ERR_LIB_CMS, ERR_R_X509_LIB);
706 goto err;
707 }
708 if (!ASN1_STRING_copy(ias->serialNumber, X509_get0_serialNumber(cert))) {
709 ERR_raise(ERR_LIB_CMS, ERR_R_ASN1_LIB);
710 goto err;
711 }
712 M_ASN1_free_of(*pias, CMS_IssuerAndSerialNumber);
713 *pias = ias;
714 return 1;
715 err:
716 M_ASN1_free_of(ias, CMS_IssuerAndSerialNumber);
717 return 0;
718 }
719
ossl_cms_set1_keyid(ASN1_OCTET_STRING ** pkeyid,X509 * cert)720 int ossl_cms_set1_keyid(ASN1_OCTET_STRING **pkeyid, X509 *cert)
721 {
722 ASN1_OCTET_STRING *keyid = NULL;
723 const ASN1_OCTET_STRING *cert_keyid;
724 cert_keyid = X509_get0_subject_key_id(cert);
725 if (cert_keyid == NULL) {
726 ERR_raise(ERR_LIB_CMS, CMS_R_CERTIFICATE_HAS_NO_KEYID);
727 return 0;
728 }
729 keyid = ASN1_STRING_dup(cert_keyid);
730 if (!keyid) {
731 ERR_raise(ERR_LIB_CMS, ERR_R_ASN1_LIB);
732 return 0;
733 }
734 ASN1_OCTET_STRING_free(*pkeyid);
735 *pkeyid = keyid;
736 return 1;
737 }
738
