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/*
* Copyright (c) 1997 - 2004 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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 "krb5_locl.h"
#include "store-int.h"
#ifdef _WIN32
#include <winsock2.h>
#endif
typedef struct socket_storage {
krb5_socket_t sock;
} socket_storage;
#define SOCK(S) (((socket_storage*)(S)->data)->sock)
static ssize_t
socket_fetch(krb5_storage * sp, void *data, size_t size)
{
return net_read(SOCK(sp), data, size);
}
static ssize_t
socket_store(krb5_storage * sp, const void *data, size_t size)
{
return net_write(SOCK(sp), data, size);
}
static off_t
socket_seek(krb5_storage * sp, off_t offset, int whence)
{
return lseek(SOCK(sp), offset, whence);
}
static int
socket_trunc(krb5_storage * sp, off_t offset)
{
if (ftruncate(SOCK(sp), offset) == -1)
return errno;
return 0;
}
static int
socket_sync(krb5_storage * sp)
{
if (fsync(SOCK(sp)) == -1)
return errno;
return 0;
}
static void
socket_free(krb5_storage * sp)
{
int save_errno = errno;
if (rk_IS_SOCKET_ERROR(rk_closesocket(SOCK(sp))))
errno = rk_SOCK_ERRNO;
else
errno = save_errno;
}
/**
*
*
* @return A krb5_storage on success, or NULL on out of memory error.
*
* @ingroup krb5_storage
*
* @sa krb5_storage_emem()
* @sa krb5_storage_from_mem()
* @sa krb5_storage_from_readonly_mem()
* @sa krb5_storage_from_data()
* @sa krb5_storage_from_fd()
*/
KRB5_LIB_FUNCTION krb5_storage * KRB5_LIB_CALL
krb5_storage_from_socket(krb5_socket_t sock_in)
{
krb5_storage *sp;
int saved_errno;
krb5_socket_t sock;
#ifdef _WIN32
WSAPROTOCOL_INFO info;
if (WSADuplicateSocket(sock_in, GetCurrentProcessId(), &info) == 0)
{
sock = WSASocket( FROM_PROTOCOL_INFO,
FROM_PROTOCOL_INFO,
FROM_PROTOCOL_INFO,
&info, 0, 0);
}
#else
sock = dup(sock_in);
#endif
if (sock == rk_INVALID_SOCKET)
return NULL;
errno = ENOMEM;
sp = malloc(sizeof(krb5_storage));
if (sp == NULL) {
saved_errno = errno;
rk_closesocket(sock);
errno = saved_errno;
return NULL;
}
errno = ENOMEM;
sp->data = malloc(sizeof(socket_storage));
if (sp->data == NULL) {
saved_errno = errno;
rk_closesocket(sock);
free(sp);
errno = saved_errno;
return NULL;
}
sp->flags = 0;
sp->eof_code = HEIM_ERR_EOF;
SOCK(sp) = sock;
sp->fetch = socket_fetch;
sp->store = socket_store;
sp->seek = socket_seek;
sp->trunc = socket_trunc;
sp->fsync = socket_sync;
sp->free = socket_free;
sp->max_alloc = UINT_MAX/8;
return sp;
}
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