| /* |
| * Copyright 2008-2022 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #include <openssl/asn1t.h> |
| #include <openssl/x509.h> |
| #include <openssl/err.h> |
| #include <openssl/pem.h> |
| #include <openssl/cms.h> |
| #include "cms_local.h" |
| |
| /* unfortunately cannot constify BIO_new_NDEF() due to this and PKCS7_stream() */ |
| int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms) |
| { |
| ASN1_OCTET_STRING **pos; |
| pos = CMS_get0_content(cms); |
| if (pos == NULL) |
| return 0; |
| if (*pos == NULL) |
| *pos = ASN1_OCTET_STRING_new(); |
| if (*pos != NULL) { |
| (*pos)->flags |= ASN1_STRING_FLAG_NDEF; |
| (*pos)->flags &= ~ASN1_STRING_FLAG_CONT; |
| *boundary = &(*pos)->data; |
| return 1; |
| } |
| ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| |
| CMS_ContentInfo *d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms) |
| { |
| CMS_ContentInfo *ci; |
| const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms == NULL ? NULL : *cms); |
| |
| ci = ASN1_item_d2i_bio_ex(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms, |
| ossl_cms_ctx_get0_libctx(ctx), |
| ossl_cms_ctx_get0_propq(ctx)); |
| if (ci != NULL) { |
| ERR_set_mark(); |
| ossl_cms_resolve_libctx(ci); |
| ERR_pop_to_mark(); |
| } |
| return ci; |
| } |
| |
| int i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms) |
| { |
| return ASN1_item_i2d_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms); |
| } |
| |
| IMPLEMENT_PEM_rw(CMS, CMS_ContentInfo, PEM_STRING_CMS, CMS_ContentInfo) |
| |
| BIO *BIO_new_CMS(BIO *out, CMS_ContentInfo *cms) |
| { |
| return BIO_new_NDEF(out, (ASN1_VALUE *)cms, |
| ASN1_ITEM_rptr(CMS_ContentInfo)); |
| } |
| |
| /* CMS wrappers round generalised stream and MIME routines */ |
| |
| int i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags) |
| { |
| return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags, |
| ASN1_ITEM_rptr(CMS_ContentInfo)); |
| } |
| |
| int PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, |
| int flags) |
| { |
| return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags, |
| "CMS", ASN1_ITEM_rptr(CMS_ContentInfo)); |
| } |
| |
| int SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags) |
| { |
| STACK_OF(X509_ALGOR) *mdalgs; |
| int ctype_nid = OBJ_obj2nid(cms->contentType); |
| int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms)); |
| const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms); |
| |
| if (ctype_nid == NID_pkcs7_signed) |
| mdalgs = cms->d.signedData->digestAlgorithms; |
| else |
| mdalgs = NULL; |
| |
| return SMIME_write_ASN1_ex(bio, (ASN1_VALUE *)cms, data, flags, ctype_nid, |
| econt_nid, mdalgs, |
| ASN1_ITEM_rptr(CMS_ContentInfo), |
| ossl_cms_ctx_get0_libctx(ctx), |
| ossl_cms_ctx_get0_propq(ctx)); |
| } |
| |
| CMS_ContentInfo *SMIME_read_CMS_ex(BIO *bio, int flags, BIO **bcont, |
| CMS_ContentInfo **cms) |
| { |
| CMS_ContentInfo *ci; |
| const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms == NULL ? NULL : *cms); |
| |
| ci = (CMS_ContentInfo *)SMIME_read_ASN1_ex(bio, flags, bcont, |
| ASN1_ITEM_rptr(CMS_ContentInfo), |
| (ASN1_VALUE **)cms, |
| ossl_cms_ctx_get0_libctx(ctx), |
| ossl_cms_ctx_get0_propq(ctx)); |
| if (ci != NULL) { |
| ERR_set_mark(); |
| ossl_cms_resolve_libctx(ci); |
| ERR_pop_to_mark(); |
| } |
| return ci; |
| } |
| |
| CMS_ContentInfo *SMIME_read_CMS(BIO *bio, BIO **bcont) |
| { |
| return SMIME_read_CMS_ex(bio, 0, bcont, NULL); |
| } |