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
);