2 * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
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
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>
19 IMPLEMENT_ASN1_FUNCTIONS(CMS_ContentInfo)
20 IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo)
22 const ASN1_OBJECT *CMS_get0_type(const CMS_ContentInfo *cms)
24 return cms->contentType;
27 CMS_ContentInfo *cms_Data_create(void)
30 cms = CMS_ContentInfo_new();
32 cms->contentType = OBJ_nid2obj(NID_pkcs7_data);
34 CMS_set_detached(cms, 0);
39 BIO *cms_content_bio(CMS_ContentInfo *cms)
41 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
44 /* If content detached data goes nowhere: create NULL BIO */
46 return BIO_new(BIO_s_null());
48 * If content not detached and created return memory BIO
50 if (!*pos || ((*pos)->flags == ASN1_STRING_FLAG_CONT))
51 return BIO_new(BIO_s_mem());
52 /* Else content was read in: return read only BIO for it */
53 return BIO_new_mem_buf((*pos)->data, (*pos)->length);
56 BIO *CMS_dataInit(CMS_ContentInfo *cms, BIO *icont)
62 cont = cms_content_bio(cms);
64 CMSerr(CMS_F_CMS_DATAINIT, CMS_R_NO_CONTENT);
67 switch (OBJ_obj2nid(cms->contentType)) {
72 case NID_pkcs7_signed:
73 cmsbio = cms_SignedData_init_bio(cms);
76 case NID_pkcs7_digest:
77 cmsbio = cms_DigestedData_init_bio(cms);
80 case NID_id_smime_ct_compressedData:
81 cmsbio = cms_CompressedData_init_bio(cms);
85 case NID_pkcs7_encrypted:
86 cmsbio = cms_EncryptedData_init_bio(cms);
89 case NID_pkcs7_enveloped:
90 cmsbio = cms_EnvelopedData_init_bio(cms);
94 CMSerr(CMS_F_CMS_DATAINIT, CMS_R_UNSUPPORTED_TYPE);
99 return BIO_push(cmsbio, cont);
107 int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
109 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
112 /* If embedded content find memory BIO and set content */
113 if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT)) {
117 mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
119 CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_CONTENT_NOT_FOUND);
122 contlen = BIO_get_mem_data(mbio, &cont);
123 /* Set bio as read only so its content can't be clobbered */
124 BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
125 BIO_set_mem_eof_return(mbio, 0);
126 ASN1_STRING_set0(*pos, cont, contlen);
127 (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
130 switch (OBJ_obj2nid(cms->contentType)) {
133 case NID_pkcs7_enveloped:
134 case NID_pkcs7_encrypted:
135 case NID_id_smime_ct_compressedData:
139 case NID_pkcs7_signed:
140 return cms_SignedData_final(cms, cmsbio);
142 case NID_pkcs7_digest:
143 return cms_DigestedData_do_final(cms, cmsbio, 0);
146 CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_UNSUPPORTED_TYPE);
152 * Return an OCTET STRING pointer to content. This allows it to be accessed
156 ASN1_OCTET_STRING **CMS_get0_content(CMS_ContentInfo *cms)
158 switch (OBJ_obj2nid(cms->contentType)) {
163 case NID_pkcs7_signed:
164 return &cms->d.signedData->encapContentInfo->eContent;
166 case NID_pkcs7_enveloped:
167 return &cms->d.envelopedData->encryptedContentInfo->encryptedContent;
169 case NID_pkcs7_digest:
170 return &cms->d.digestedData->encapContentInfo->eContent;
172 case NID_pkcs7_encrypted:
173 return &cms->d.encryptedData->encryptedContentInfo->encryptedContent;
175 case NID_id_smime_ct_authData:
176 return &cms->d.authenticatedData->encapContentInfo->eContent;
178 case NID_id_smime_ct_compressedData:
179 return &cms->d.compressedData->encapContentInfo->eContent;
182 if (cms->d.other->type == V_ASN1_OCTET_STRING)
183 return &cms->d.other->value.octet_string;
184 CMSerr(CMS_F_CMS_GET0_CONTENT, CMS_R_UNSUPPORTED_CONTENT_TYPE);
191 * Return an ASN1_OBJECT pointer to content type. This allows it to be
192 * accessed or set later.
195 static ASN1_OBJECT **cms_get0_econtent_type(CMS_ContentInfo *cms)
197 switch (OBJ_obj2nid(cms->contentType)) {
199 case NID_pkcs7_signed:
200 return &cms->d.signedData->encapContentInfo->eContentType;
202 case NID_pkcs7_enveloped:
203 return &cms->d.envelopedData->encryptedContentInfo->contentType;
205 case NID_pkcs7_digest:
206 return &cms->d.digestedData->encapContentInfo->eContentType;
208 case NID_pkcs7_encrypted:
209 return &cms->d.encryptedData->encryptedContentInfo->contentType;
211 case NID_id_smime_ct_authData:
212 return &cms->d.authenticatedData->encapContentInfo->eContentType;
214 case NID_id_smime_ct_compressedData:
215 return &cms->d.compressedData->encapContentInfo->eContentType;
218 CMSerr(CMS_F_CMS_GET0_ECONTENT_TYPE, CMS_R_UNSUPPORTED_CONTENT_TYPE);
224 const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms)
226 ASN1_OBJECT **petype;
227 petype = cms_get0_econtent_type(cms);
233 int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid)
235 ASN1_OBJECT **petype, *etype;
236 petype = cms_get0_econtent_type(cms);
241 etype = OBJ_dup(oid);
244 ASN1_OBJECT_free(*petype);
249 int CMS_is_detached(CMS_ContentInfo *cms)
251 ASN1_OCTET_STRING **pos;
252 pos = CMS_get0_content(cms);
260 int CMS_set_detached(CMS_ContentInfo *cms, int detached)
262 ASN1_OCTET_STRING **pos;
263 pos = CMS_get0_content(cms);
267 ASN1_OCTET_STRING_free(*pos);
272 *pos = ASN1_OCTET_STRING_new();
275 * NB: special flag to show content is created and not read in.
277 (*pos)->flags |= ASN1_STRING_FLAG_CONT;
280 CMSerr(CMS_F_CMS_SET_DETACHED, ERR_R_MALLOC_FAILURE);
284 /* Create a digest BIO from an X509_ALGOR structure */
286 BIO *cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm)
289 const ASN1_OBJECT *digestoid;
290 const EVP_MD *digest;
291 X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
292 digest = EVP_get_digestbyobj(digestoid);
294 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO,
295 CMS_R_UNKNOWN_DIGEST_ALGORIHM);
298 mdbio = BIO_new(BIO_f_md());
299 if (mdbio == NULL || !BIO_set_md(mdbio, digest)) {
300 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO, CMS_R_MD_BIO_INIT_ERROR);
309 /* Locate a message digest content from a BIO chain based on SignerInfo */
311 int cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
315 const ASN1_OBJECT *mdoid;
316 X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
317 nid = OBJ_obj2nid(mdoid);
318 /* Look for digest type to match signature */
321 chain = BIO_find_type(chain, BIO_TYPE_MD);
323 CMSerr(CMS_F_CMS_DIGESTALGORITHM_FIND_CTX,
324 CMS_R_NO_MATCHING_DIGEST);
327 BIO_get_md_ctx(chain, &mtmp);
328 if (EVP_MD_CTX_type(mtmp) == nid
330 * Workaround for broken implementations that use signature
331 * algorithm OID instead of digest.
333 || EVP_MD_pkey_type(EVP_MD_CTX_md(mtmp)) == nid)
334 return EVP_MD_CTX_copy_ex(mctx, mtmp);
335 chain = BIO_next(chain);
339 static STACK_OF(CMS_CertificateChoices)
340 **cms_get0_certificate_choices(CMS_ContentInfo *cms)
342 switch (OBJ_obj2nid(cms->contentType)) {
344 case NID_pkcs7_signed:
345 return &cms->d.signedData->certificates;
347 case NID_pkcs7_enveloped:
348 if (cms->d.envelopedData->originatorInfo == NULL)
350 return &cms->d.envelopedData->originatorInfo->certificates;
353 CMSerr(CMS_F_CMS_GET0_CERTIFICATE_CHOICES,
354 CMS_R_UNSUPPORTED_CONTENT_TYPE);
360 CMS_CertificateChoices *CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
362 STACK_OF(CMS_CertificateChoices) **pcerts;
363 CMS_CertificateChoices *cch;
364 pcerts = cms_get0_certificate_choices(cms);
368 *pcerts = sk_CMS_CertificateChoices_new_null();
371 cch = M_ASN1_new_of(CMS_CertificateChoices);
374 if (!sk_CMS_CertificateChoices_push(*pcerts, cch)) {
375 M_ASN1_free_of(cch, CMS_CertificateChoices);
381 int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
383 CMS_CertificateChoices *cch;
384 STACK_OF(CMS_CertificateChoices) **pcerts;
386 pcerts = cms_get0_certificate_choices(cms);
389 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
390 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
391 if (cch->type == CMS_CERTCHOICE_CERT) {
392 if (!X509_cmp(cch->d.certificate, cert)) {
393 CMSerr(CMS_F_CMS_ADD0_CERT,
394 CMS_R_CERTIFICATE_ALREADY_PRESENT);
399 cch = CMS_add0_CertificateChoices(cms);
402 cch->type = CMS_CERTCHOICE_CERT;
403 cch->d.certificate = cert;
407 int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
410 r = CMS_add0_cert(cms, cert);
416 static STACK_OF(CMS_RevocationInfoChoice)
417 **cms_get0_revocation_choices(CMS_ContentInfo *cms)
419 switch (OBJ_obj2nid(cms->contentType)) {
421 case NID_pkcs7_signed:
422 return &cms->d.signedData->crls;
424 case NID_pkcs7_enveloped:
425 if (cms->d.envelopedData->originatorInfo == NULL)
427 return &cms->d.envelopedData->originatorInfo->crls;
430 CMSerr(CMS_F_CMS_GET0_REVOCATION_CHOICES,
431 CMS_R_UNSUPPORTED_CONTENT_TYPE);
437 CMS_RevocationInfoChoice *CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
439 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
440 CMS_RevocationInfoChoice *rch;
441 pcrls = cms_get0_revocation_choices(cms);
445 *pcrls = sk_CMS_RevocationInfoChoice_new_null();
448 rch = M_ASN1_new_of(CMS_RevocationInfoChoice);
451 if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch)) {
452 M_ASN1_free_of(rch, CMS_RevocationInfoChoice);
458 int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
460 CMS_RevocationInfoChoice *rch;
461 rch = CMS_add0_RevocationInfoChoice(cms);
464 rch->type = CMS_REVCHOICE_CRL;
469 int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl)
472 r = CMS_add0_crl(cms, crl);
474 X509_CRL_up_ref(crl);
478 STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms)
480 STACK_OF(X509) *certs = NULL;
481 CMS_CertificateChoices *cch;
482 STACK_OF(CMS_CertificateChoices) **pcerts;
484 pcerts = cms_get0_certificate_choices(cms);
487 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
488 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
489 if (cch->type == 0) {
491 certs = sk_X509_new_null();
495 if (!sk_X509_push(certs, cch->d.certificate)) {
496 sk_X509_pop_free(certs, X509_free);
499 X509_up_ref(cch->d.certificate);
506 STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms)
508 STACK_OF(X509_CRL) *crls = NULL;
509 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
510 CMS_RevocationInfoChoice *rch;
512 pcrls = cms_get0_revocation_choices(cms);
515 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(*pcrls); i++) {
516 rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
517 if (rch->type == 0) {
519 crls = sk_X509_CRL_new_null();
523 if (!sk_X509_CRL_push(crls, rch->d.crl)) {
524 sk_X509_CRL_pop_free(crls, X509_CRL_free);
527 X509_CRL_up_ref(rch->d.crl);
533 int cms_ias_cert_cmp(CMS_IssuerAndSerialNumber *ias, X509 *cert)
536 ret = X509_NAME_cmp(ias->issuer, X509_get_issuer_name(cert));
539 return ASN1_INTEGER_cmp(ias->serialNumber, X509_get_serialNumber(cert));
542 int cms_keyid_cert_cmp(ASN1_OCTET_STRING *keyid, X509 *cert)
544 const ASN1_OCTET_STRING *cert_keyid = X509_get0_subject_key_id(cert);
546 if (cert_keyid == NULL)
548 return ASN1_OCTET_STRING_cmp(keyid, cert_keyid);
551 int cms_set1_ias(CMS_IssuerAndSerialNumber **pias, X509 *cert)
553 CMS_IssuerAndSerialNumber *ias;
554 ias = M_ASN1_new_of(CMS_IssuerAndSerialNumber);
557 if (!X509_NAME_set(&ias->issuer, X509_get_issuer_name(cert)))
559 if (!ASN1_STRING_copy(ias->serialNumber, X509_get_serialNumber(cert)))
561 M_ASN1_free_of(*pias, CMS_IssuerAndSerialNumber);
565 M_ASN1_free_of(ias, CMS_IssuerAndSerialNumber);
566 CMSerr(CMS_F_CMS_SET1_IAS, ERR_R_MALLOC_FAILURE);
570 int cms_set1_keyid(ASN1_OCTET_STRING **pkeyid, X509 *cert)
572 ASN1_OCTET_STRING *keyid = NULL;
573 const ASN1_OCTET_STRING *cert_keyid;
574 cert_keyid = X509_get0_subject_key_id(cert);
575 if (cert_keyid == NULL) {
576 CMSerr(CMS_F_CMS_SET1_KEYID, CMS_R_CERTIFICATE_HAS_NO_KEYID);
579 keyid = ASN1_STRING_dup(cert_keyid);
581 CMSerr(CMS_F_CMS_SET1_KEYID, ERR_R_MALLOC_FAILURE);
584 ASN1_OCTET_STRING_free(*pkeyid);