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/*
* Copyright (c) 2006 - 2007 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Portions Copyright (c) 2009 Apple Inc. 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS 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 INSTITUTE OR 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 "hx_locl.h"
/**
* @page page_peer Hx509 crypto selecting functions
*
* Peer info structures are used togeter with hx509_crypto_select() to
* select the best avaible crypto algorithm to use.
*
* See the library functions here: @ref hx509_peer
*/
/**
* Allocate a new peer info structure an init it to default values.
*
* @param context A hx509 context.
* @param peer return an allocated peer, free with hx509_peer_info_free().
*
* @return An hx509 error code, see hx509_get_error_string().
*
* @ingroup hx509_peer
*/
int
hx509_peer_info_alloc(hx509_context context, hx509_peer_info *peer)
{
*peer = calloc(1, sizeof(**peer));
if (*peer == NULL) {
hx509_set_error_string(context, 0, ENOMEM, "out of memory");
return ENOMEM;
}
return 0;
}
static void
free_cms_alg(hx509_peer_info peer)
{
if (peer->val) {
size_t i;
for (i = 0; i < peer->len; i++)
free_AlgorithmIdentifier(&peer->val[i]);
free(peer->val);
peer->val = NULL;
peer->len = 0;
}
}
/**
* Free a peer info structure.
*
* @param peer peer info to be freed.
*
* @ingroup hx509_peer
*/
void
hx509_peer_info_free(hx509_peer_info peer)
{
if (peer == NULL)
return;
if (peer->cert)
hx509_cert_free(peer->cert);
free_cms_alg(peer);
memset(peer, 0, sizeof(*peer));
free(peer);
}
/**
* Set the certificate that remote peer is using.
*
* @param peer peer info to update
* @param cert cerificate of the remote peer.
*
* @return An hx509 error code, see hx509_get_error_string().
*
* @ingroup hx509_peer
*/
int
hx509_peer_info_set_cert(hx509_peer_info peer,
hx509_cert cert)
{
if (peer->cert)
hx509_cert_free(peer->cert);
peer->cert = hx509_cert_ref(cert);
return 0;
}
/**
* Add an additional algorithm that the peer supports.
*
* @param context A hx509 context.
* @param peer the peer to set the new algorithms for
* @param val an AlgorithmsIdentier to add
*
* @return An hx509 error code, see hx509_get_error_string().
*
* @ingroup hx509_peer
*/
int
hx509_peer_info_add_cms_alg(hx509_context context,
hx509_peer_info peer,
const AlgorithmIdentifier *val)
{
void *ptr;
int ret;
ptr = realloc(peer->val, sizeof(peer->val[0]) * (peer->len + 1));
if (ptr == NULL) {
hx509_set_error_string(context, 0, ENOMEM, "out of memory");
return ENOMEM;
}
peer->val = ptr;
ret = copy_AlgorithmIdentifier(val, &peer->val[peer->len]);
if (ret == 0)
peer->len += 1;
else
hx509_set_error_string(context, 0, ret, "out of memory");
return ret;
}
/**
* Set the algorithms that the peer supports.
*
* @param context A hx509 context.
* @param peer the peer to set the new algorithms for
* @param val array of supported AlgorithmsIdentiers
* @param len length of array val.
*
* @return An hx509 error code, see hx509_get_error_string().
*
* @ingroup hx509_peer
*/
int
hx509_peer_info_set_cms_algs(hx509_context context,
hx509_peer_info peer,
const AlgorithmIdentifier *val,
size_t len)
{
size_t i;
free_cms_alg(peer);
peer->val = calloc(len, sizeof(*peer->val));
if (peer->val == NULL) {
peer->len = 0;
hx509_set_error_string(context, 0, ENOMEM, "out of memory");
return ENOMEM;
}
peer->len = len;
for (i = 0; i < len; i++) {
int ret;
ret = copy_AlgorithmIdentifier(&val[i], &peer->val[i]);
if (ret) {
hx509_clear_error_string(context);
free_cms_alg(peer);
return ret;
}
}
return 0;
}
#if 0
/*
* S/MIME
*/
int
hx509_peer_info_parse_smime(hx509_peer_info peer,
const heim_octet_string *data)
{
return 0;
}
int
hx509_peer_info_unparse_smime(hx509_peer_info peer,
heim_octet_string *data)
{
return 0;
}
/*
* For storing hx509_peer_info to be able to cache them.
*/
int
hx509_peer_info_parse(hx509_peer_info peer,
const heim_octet_string *data)
{
return 0;
}
int
hx509_peer_info_unparse(hx509_peer_info peer,
heim_octet_string *data)
{
return 0;
}
#endif
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