-/* bio_pk7.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project.
- */
-/* ====================================================================
- * Copyright (c) 2006 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+/*
+ * Copyright 2006-2016 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/asn1.h>
#include <openssl/pkcs7.h>
#include <openssl/bio.h>
-#include <memory.h>
+#if !defined(OPENSSL_SYS_VXWORKS)
+# include <memory.h>
+#endif
#include <stdio.h>
-/* Highly experiemental PKCS#7 BIO support routines */
-
-/* The usage is quite simple, initialize a PKCS7 structure,
- * get a BIO from it then any data written through the BIO
- * will end up translated to PKCS#7 format on the fly.
- * The data is streamed out and does *not* need to be
- * all held in memory at once.
- *
- * When the BIO is flushed the output is finalized and any
- * signatures etc written out.
- *
- * The BIO is a 'proper' BIO and can handle non blocking I/O
- * correctly.
- *
- * The usage is simple. The implementation is *not*...
- */
-
-/* BIO support data stored in the ASN1 BIO ex_arg */
-
-typedef struct pkcs7_aux_st
- {
- /* PKCS7 structure this BIO refers to */
- PKCS7 *p7;
- /* Top of the BIO chain */
- BIO *p7bio;
- /* Output BIO */
- BIO *out;
- /* Boundary where content is inserted */
- unsigned char **boundary;
- /* DER buffer start */
- unsigned char *derbuf;
- } PKCS7_SUPPORT;
-
-static int pkcs7_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
-static int pkcs7_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg);
-static int pkcs7_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
-static int pkcs7_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg);
-
-BIO *BIO_new_PKCS7(BIO *out, PKCS7 *p7)
- {
- PKCS7_SUPPORT *p7aux = NULL;
- BIO *p7bio = NULL;
- BIO *asn_bio = NULL;
- unsigned char **boundary;
- p7aux = OPENSSL_malloc(sizeof(PKCS7_SUPPORT));
- asn_bio = BIO_new(BIO_f_asn1());
-
- /* ASN1 bio needs to be next to output BIO */
-
- out = BIO_push(asn_bio, out);
-
- BIO_asn1_set_prefix(asn_bio, pkcs7_prefix, pkcs7_prefix_free);
- BIO_asn1_set_suffix(asn_bio, pkcs7_suffix, pkcs7_suffix_free);
-
- /* Now initialize BIO for PKCS#7 output */
-
- p7bio = PKCS7_dataInit(p7, out);
- PKCS7_stream(&boundary, p7);
-
- p7aux->p7 = p7;
- p7aux->p7bio = p7bio;
- p7aux->boundary = boundary;
- p7aux->out = out;
-
- BIO_ctrl(asn_bio, BIO_C_SET_EX_ARG, 0, p7aux);
-
- return p7bio;
-
- }
-
-static int pkcs7_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
- {
- PKCS7_SUPPORT *p7aux;
- unsigned char *p;
- int derlen;
-
- if (!parg)
- return 0;
-
- p7aux = *(PKCS7_SUPPORT **)parg;
-
- derlen = i2d_PKCS7_NDEF(p7aux->p7, NULL);
- p = OPENSSL_malloc(derlen);
- p7aux->derbuf = p;
- *pbuf = p;
- i2d_PKCS7_NDEF(p7aux->p7, &p);
-
- if (!*p7aux->boundary)
- return 0;
-
- *plen = *p7aux->boundary - *pbuf;
-
- return 1;
- }
-
-static int pkcs7_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
- {
- PKCS7_SUPPORT *p7aux;
-
- if (!parg)
- return 0;
-
- p7aux = *(PKCS7_SUPPORT **)parg;
-
- if (p7aux->derbuf)
- OPENSSL_free(p7aux->derbuf);
-
- p7aux->derbuf = NULL;
- *pbuf = NULL;
- *plen = 0;
- return 1;
- }
-
-static int pkcs7_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
- {
- PKCS7_SUPPORT **pp7aux = (PKCS7_SUPPORT **)parg;
- if (!pkcs7_prefix_free(b, pbuf, plen, parg))
- return 0;
- OPENSSL_free(*pp7aux);
- *pp7aux = NULL;
- return 1;
- }
-
-static int pkcs7_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
- {
- PKCS7_SUPPORT *p7aux;
- unsigned char *p;
- int derlen;
-
- if (!parg)
- return 0;
-
- p7aux = *(PKCS7_SUPPORT **)parg;
-
- /* Finalize structures */
- PKCS7_dataFinal(p7aux->p7, p7aux->p7bio);
-
- derlen = i2d_PKCS7_NDEF(p7aux->p7, NULL);
- p = OPENSSL_malloc(derlen);
- p7aux->derbuf = p;
- i2d_PKCS7_NDEF(p7aux->p7, &p);
- if (!*p7aux->boundary)
- return 0;
- *pbuf = *p7aux->boundary;
- *plen = derlen - (*p7aux->boundary - p7aux->derbuf);
-
- return 1;
- }
-
+/* Streaming encode support for PKCS#7 */
+BIO *BIO_new_PKCS7(BIO *out, PKCS7 *p7)
+{
+ return BIO_new_NDEF(out, (ASN1_VALUE *)p7, ASN1_ITEM_rptr(PKCS7));
+}
projects / oweals / openssl.git / blobdiff