1 /* 2 * Copyright 1999-2021 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 <stdio.h> 11 #include "internal/cryptlib.h" 12 #include <openssl/x509.h> 13 #include <openssl/asn1.h> 14 #include "pk7_local.h" 15 16 /* PKCS#7 wrappers round generalised stream and MIME routines */ 17 18 int i2d_PKCS7_bio_stream(BIO *out, PKCS7 *p7, BIO *in, int flags) 19 { 20 return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)p7, in, flags, 21 ASN1_ITEM_rptr(PKCS7)); 22 } 23 24 int PEM_write_bio_PKCS7_stream(BIO *out, PKCS7 *p7, BIO *in, int flags) 25 { 26 return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)p7, in, flags, 27 "PKCS7", ASN1_ITEM_rptr(PKCS7)); 28 } 29 30 int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags) 31 { 32 STACK_OF(X509_ALGOR) *mdalgs; 33 int ctype_nid = OBJ_obj2nid(p7->type); 34 const PKCS7_CTX *ctx = ossl_pkcs7_get0_ctx(p7); 35 36 if (ctype_nid == NID_pkcs7_signed) 37 mdalgs = p7->d.sign->md_algs; 38 else 39 mdalgs = NULL; 40 41 flags ^= SMIME_OLDMIME; 42 43 return SMIME_write_ASN1_ex(bio, (ASN1_VALUE *)p7, data, flags, ctype_nid, 44 NID_undef, mdalgs, ASN1_ITEM_rptr(PKCS7), 45 ossl_pkcs7_ctx_get0_libctx(ctx), 46 ossl_pkcs7_ctx_get0_propq(ctx)); 47 } 48 49 PKCS7 *SMIME_read_PKCS7_ex(BIO *bio, BIO **bcont, PKCS7 **p7) 50 { 51 PKCS7 *ret; 52 OSSL_LIB_CTX *libctx = NULL; 53 const char *propq = NULL; 54 55 if (p7 != NULL && *p7 != NULL) { 56 libctx = (*p7)->ctx.libctx; 57 propq = (*p7)->ctx.propq; 58 } 59 60 ret = (PKCS7 *)SMIME_read_ASN1_ex(bio, 0, bcont, ASN1_ITEM_rptr(PKCS7), 61 (ASN1_VALUE **)p7, libctx, propq); 62 if (ret != NULL) 63 ossl_pkcs7_resolve_libctx(ret); 64 return ret; 65 } 66 67 PKCS7 *SMIME_read_PKCS7(BIO *bio, BIO **bcont) 68 { 69 return SMIME_read_PKCS7_ex(bio, bcont, NULL); 70 } 71