2 * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
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
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 "cms_local.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);
45 /* If content detached data goes nowhere: create NULL BIO */
47 return BIO_new(BIO_s_null());
49 * If content not detached and created return memory BIO
51 if (*pos == NULL || ((*pos)->flags == ASN1_STRING_FLAG_CONT))
52 return BIO_new(BIO_s_mem());
53 /* Else content was read in: return read only BIO for it */
54 return BIO_new_mem_buf((*pos)->data, (*pos)->length);
57 BIO *CMS_dataInit(CMS_ContentInfo *cms, BIO *icont)
63 cont = cms_content_bio(cms);
65 CMSerr(CMS_F_CMS_DATAINIT, CMS_R_NO_CONTENT);
68 switch (OBJ_obj2nid(cms->contentType)) {
73 case NID_pkcs7_signed:
74 cmsbio = cms_SignedData_init_bio(cms);
77 case NID_pkcs7_digest:
78 cmsbio = cms_DigestedData_init_bio(cms);
81 case NID_id_smime_ct_compressedData:
82 cmsbio = cms_CompressedData_init_bio(cms);
86 case NID_pkcs7_encrypted:
87 cmsbio = cms_EncryptedData_init_bio(cms);
90 case NID_pkcs7_enveloped:
91 cmsbio = cms_EnvelopedData_init_bio(cms);
95 CMSerr(CMS_F_CMS_DATAINIT, CMS_R_UNSUPPORTED_TYPE);
100 return BIO_push(cmsbio, cont);
108 /* unfortunately cannot constify SMIME_write_ASN1() due to this function */
109 int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
111 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
115 /* If embedded content find memory BIO and set content */
116 if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT)) {
120 mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
122 CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_CONTENT_NOT_FOUND);
125 contlen = BIO_get_mem_data(mbio, &cont);
126 /* Set bio as read only so its content can't be clobbered */
127 BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
128 BIO_set_mem_eof_return(mbio, 0);
129 ASN1_STRING_set0(*pos, cont, contlen);
130 (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
133 switch (OBJ_obj2nid(cms->contentType)) {
136 case NID_pkcs7_enveloped:
137 case NID_pkcs7_encrypted:
138 case NID_id_smime_ct_compressedData:
142 case NID_pkcs7_signed:
143 return cms_SignedData_final(cms, cmsbio);
145 case NID_pkcs7_digest:
146 return cms_DigestedData_do_final(cms, cmsbio, 0);
149 CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_UNSUPPORTED_TYPE);
155 * Return an OCTET STRING pointer to content. This allows it to be accessed
159 ASN1_OCTET_STRING **CMS_get0_content(CMS_ContentInfo *cms)
161 switch (OBJ_obj2nid(cms->contentType)) {
166 case NID_pkcs7_signed:
167 return &cms->d.signedData->encapContentInfo->eContent;
169 case NID_pkcs7_enveloped:
170 return &cms->d.envelopedData->encryptedContentInfo->encryptedContent;
172 case NID_pkcs7_digest:
173 return &cms->d.digestedData->encapContentInfo->eContent;
175 case NID_pkcs7_encrypted:
176 return &cms->d.encryptedData->encryptedContentInfo->encryptedContent;
178 case NID_id_smime_ct_authData:
179 return &cms->d.authenticatedData->encapContentInfo->eContent;
181 case NID_id_smime_ct_compressedData:
182 return &cms->d.compressedData->encapContentInfo->eContent;
185 if (cms->d.other->type == V_ASN1_OCTET_STRING)
186 return &cms->d.other->value.octet_string;
187 CMSerr(CMS_F_CMS_GET0_CONTENT, CMS_R_UNSUPPORTED_CONTENT_TYPE);
194 * Return an ASN1_OBJECT pointer to content type. This allows it to be
195 * accessed or set later.
198 static ASN1_OBJECT **cms_get0_econtent_type(CMS_ContentInfo *cms)
200 switch (OBJ_obj2nid(cms->contentType)) {
202 case NID_pkcs7_signed:
203 return &cms->d.signedData->encapContentInfo->eContentType;
205 case NID_pkcs7_enveloped:
206 return &cms->d.envelopedData->encryptedContentInfo->contentType;
208 case NID_pkcs7_digest:
209 return &cms->d.digestedData->encapContentInfo->eContentType;
211 case NID_pkcs7_encrypted:
212 return &cms->d.encryptedData->encryptedContentInfo->contentType;
214 case NID_id_smime_ct_authData:
215 return &cms->d.authenticatedData->encapContentInfo->eContentType;
217 case NID_id_smime_ct_compressedData:
218 return &cms->d.compressedData->encapContentInfo->eContentType;
221 CMSerr(CMS_F_CMS_GET0_ECONTENT_TYPE, CMS_R_UNSUPPORTED_CONTENT_TYPE);
227 const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms)
229 ASN1_OBJECT **petype;
230 petype = cms_get0_econtent_type(cms);
236 int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid)
238 ASN1_OBJECT **petype, *etype;
240 petype = cms_get0_econtent_type(cms);
245 etype = OBJ_dup(oid);
248 ASN1_OBJECT_free(*petype);
253 int CMS_is_detached(CMS_ContentInfo *cms)
255 ASN1_OCTET_STRING **pos;
257 pos = CMS_get0_content(cms);
265 int CMS_set_detached(CMS_ContentInfo *cms, int detached)
267 ASN1_OCTET_STRING **pos;
269 pos = CMS_get0_content(cms);
273 ASN1_OCTET_STRING_free(*pos);
278 *pos = ASN1_OCTET_STRING_new();
281 * NB: special flag to show content is created and not read in.
283 (*pos)->flags |= ASN1_STRING_FLAG_CONT;
286 CMSerr(CMS_F_CMS_SET_DETACHED, ERR_R_MALLOC_FAILURE);
290 /* Create a digest BIO from an X509_ALGOR structure */
292 BIO *cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm)
295 const ASN1_OBJECT *digestoid;
296 const EVP_MD *digest;
297 X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
298 digest = EVP_get_digestbyobj(digestoid);
300 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO,
301 CMS_R_UNKNOWN_DIGEST_ALGORITHM);
304 mdbio = BIO_new(BIO_f_md());
305 if (mdbio == NULL || !BIO_set_md(mdbio, digest)) {
306 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO, CMS_R_MD_BIO_INIT_ERROR);
315 /* Locate a message digest content from a BIO chain based on SignerInfo */
317 int cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
321 const ASN1_OBJECT *mdoid;
322 X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
323 nid = OBJ_obj2nid(mdoid);
324 /* Look for digest type to match signature */
327 chain = BIO_find_type(chain, BIO_TYPE_MD);
329 CMSerr(CMS_F_CMS_DIGESTALGORITHM_FIND_CTX,
330 CMS_R_NO_MATCHING_DIGEST);
333 BIO_get_md_ctx(chain, &mtmp);
334 if (EVP_MD_CTX_type(mtmp) == nid
336 * Workaround for broken implementations that use signature
337 * algorithm OID instead of digest.
339 || EVP_MD_pkey_type(EVP_MD_CTX_md(mtmp)) == nid)
340 return EVP_MD_CTX_copy_ex(mctx, mtmp);
341 chain = BIO_next(chain);
345 static STACK_OF(CMS_CertificateChoices)
346 **cms_get0_certificate_choices(CMS_ContentInfo *cms)
348 switch (OBJ_obj2nid(cms->contentType)) {
350 case NID_pkcs7_signed:
351 return &cms->d.signedData->certificates;
353 case NID_pkcs7_enveloped:
354 if (cms->d.envelopedData->originatorInfo == NULL)
356 return &cms->d.envelopedData->originatorInfo->certificates;
359 CMSerr(CMS_F_CMS_GET0_CERTIFICATE_CHOICES,
360 CMS_R_UNSUPPORTED_CONTENT_TYPE);
366 CMS_CertificateChoices *CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
368 STACK_OF(CMS_CertificateChoices) **pcerts;
369 CMS_CertificateChoices *cch;
371 pcerts = cms_get0_certificate_choices(cms);
375 *pcerts = sk_CMS_CertificateChoices_new_null();
378 cch = M_ASN1_new_of(CMS_CertificateChoices);
381 if (!sk_CMS_CertificateChoices_push(*pcerts, cch)) {
382 M_ASN1_free_of(cch, CMS_CertificateChoices);
388 int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
390 CMS_CertificateChoices *cch;
391 STACK_OF(CMS_CertificateChoices) **pcerts;
394 pcerts = cms_get0_certificate_choices(cms);
397 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
398 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
399 if (cch->type == CMS_CERTCHOICE_CERT) {
400 if (!X509_cmp(cch->d.certificate, cert)) {
401 CMSerr(CMS_F_CMS_ADD0_CERT,
402 CMS_R_CERTIFICATE_ALREADY_PRESENT);
407 cch = CMS_add0_CertificateChoices(cms);
410 cch->type = CMS_CERTCHOICE_CERT;
411 cch->d.certificate = cert;
415 int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
418 r = CMS_add0_cert(cms, cert);
424 static STACK_OF(CMS_RevocationInfoChoice)
425 **cms_get0_revocation_choices(CMS_ContentInfo *cms)
427 switch (OBJ_obj2nid(cms->contentType)) {
429 case NID_pkcs7_signed:
430 return &cms->d.signedData->crls;
432 case NID_pkcs7_enveloped:
433 if (cms->d.envelopedData->originatorInfo == NULL)
435 return &cms->d.envelopedData->originatorInfo->crls;
438 CMSerr(CMS_F_CMS_GET0_REVOCATION_CHOICES,
439 CMS_R_UNSUPPORTED_CONTENT_TYPE);
445 CMS_RevocationInfoChoice *CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
447 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
448 CMS_RevocationInfoChoice *rch;
450 pcrls = cms_get0_revocation_choices(cms);
454 *pcrls = sk_CMS_RevocationInfoChoice_new_null();
457 rch = M_ASN1_new_of(CMS_RevocationInfoChoice);
460 if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch)) {
461 M_ASN1_free_of(rch, CMS_RevocationInfoChoice);
467 int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
469 CMS_RevocationInfoChoice *rch;
470 rch = CMS_add0_RevocationInfoChoice(cms);
473 rch->type = CMS_REVCHOICE_CRL;
478 int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl)
481 r = CMS_add0_crl(cms, crl);
483 X509_CRL_up_ref(crl);
487 STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms)
489 STACK_OF(X509) *certs = NULL;
490 CMS_CertificateChoices *cch;
491 STACK_OF(CMS_CertificateChoices) **pcerts;
494 pcerts = cms_get0_certificate_choices(cms);
497 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
498 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
499 if (cch->type == 0) {
501 certs = sk_X509_new_null();
505 if (!sk_X509_push(certs, cch->d.certificate)) {
506 sk_X509_pop_free(certs, X509_free);
509 X509_up_ref(cch->d.certificate);
516 STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms)
518 STACK_OF(X509_CRL) *crls = NULL;
519 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
520 CMS_RevocationInfoChoice *rch;
523 pcrls = cms_get0_revocation_choices(cms);
526 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(*pcrls); i++) {
527 rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
528 if (rch->type == 0) {
530 crls = sk_X509_CRL_new_null();
534 if (!sk_X509_CRL_push(crls, rch->d.crl)) {
535 sk_X509_CRL_pop_free(crls, X509_CRL_free);
538 X509_CRL_up_ref(rch->d.crl);
544 int cms_ias_cert_cmp(CMS_IssuerAndSerialNumber *ias, X509 *cert)
547 ret = X509_NAME_cmp(ias->issuer, X509_get_issuer_name(cert));
550 return ASN1_INTEGER_cmp(ias->serialNumber, X509_get_serialNumber(cert));
553 int cms_keyid_cert_cmp(ASN1_OCTET_STRING *keyid, X509 *cert)
555 const ASN1_OCTET_STRING *cert_keyid = X509_get0_subject_key_id(cert);
557 if (cert_keyid == NULL)
559 return ASN1_OCTET_STRING_cmp(keyid, cert_keyid);
562 int cms_set1_ias(CMS_IssuerAndSerialNumber **pias, X509 *cert)
564 CMS_IssuerAndSerialNumber *ias;
565 ias = M_ASN1_new_of(CMS_IssuerAndSerialNumber);
568 if (!X509_NAME_set(&ias->issuer, X509_get_issuer_name(cert)))
570 if (!ASN1_STRING_copy(ias->serialNumber, X509_get_serialNumber(cert)))
572 M_ASN1_free_of(*pias, CMS_IssuerAndSerialNumber);
576 M_ASN1_free_of(ias, CMS_IssuerAndSerialNumber);
577 CMSerr(CMS_F_CMS_SET1_IAS, ERR_R_MALLOC_FAILURE);
581 int cms_set1_keyid(ASN1_OCTET_STRING **pkeyid, X509 *cert)
583 ASN1_OCTET_STRING *keyid = NULL;
584 const ASN1_OCTET_STRING *cert_keyid;
585 cert_keyid = X509_get0_subject_key_id(cert);
586 if (cert_keyid == NULL) {
587 CMSerr(CMS_F_CMS_SET1_KEYID, CMS_R_CERTIFICATE_HAS_NO_KEYID);
590 keyid = ASN1_STRING_dup(cert_keyid);
592 CMSerr(CMS_F_CMS_SET1_KEYID, ERR_R_MALLOC_FAILURE);
595 ASN1_OCTET_STRING_free(*pkeyid);