| /* pk7_mime.c */ |
| /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| * project. |
| */ |
| /* ==================================================================== |
| * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * licensing@OpenSSL.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| * OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ==================================================================== |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <ctype.h> |
| #include "cryptlib.h" |
| #include <openssl/rand.h> |
| #include <openssl/x509.h> |
| #include <openssl/asn1.h> |
| |
| /* PKCS#7 wrappers round generalised MIME routines */ |
| |
| PKCS7 *SMIME_read_PKCS7(BIO *bio, BIO **bcont) |
| { |
| return (PKCS7 *)SMIME_read_ASN1(bio, bcont, ASN1_ITEM_rptr(PKCS7)); |
| } |
| |
| /* Callback for int_smime_write_ASN1 */ |
| |
| static int pk7_output_data(BIO *out, BIO *data, ASN1_VALUE *val, int flags, |
| const ASN1_ITEM *it) |
| { |
| PKCS7 *p7 = (PKCS7 *)val; |
| BIO *tmpbio, *p7bio; |
| int r = 0; |
| |
| if (!(flags & SMIME_DETACHED)) |
| { |
| SMIME_crlf_copy(data, out, flags); |
| return 1; |
| } |
| |
| /* Let PKCS7 code prepend any needed BIOs */ |
| |
| p7bio = PKCS7_dataInit(p7, out); |
| |
| if (!p7bio) |
| return 0; |
| |
| /* Copy data across, passing through filter BIOs for processing */ |
| SMIME_crlf_copy(data, p7bio, flags); |
| |
| /* Finalize structure */ |
| if (PKCS7_dataFinal(p7, p7bio) <= 0) |
| goto err; |
| |
| r = 1; |
| |
| err: |
| |
| /* Now remove any digests prepended to the BIO */ |
| |
| while (p7bio != out) |
| { |
| tmpbio = BIO_pop(p7bio); |
| BIO_free(p7bio); |
| p7bio = tmpbio; |
| } |
| |
| return 1; |
| |
| } |
| |
| int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags) |
| { |
| STACK_OF(X509_ALGOR) *mdalgs; |
| int ctype_nid = OBJ_obj2nid(p7->type); |
| if (ctype_nid == NID_pkcs7_signed) |
| mdalgs = p7->d.sign->md_algs; |
| else |
| mdalgs = NULL; |
| |
| return int_smime_write_ASN1(bio, (ASN1_VALUE *)p7, data, flags, |
| ctype_nid, NID_undef, mdalgs, |
| pk7_output_data, |
| ASN1_ITEM_rptr(PKCS7)); |
| } |