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/* $NetBSD: getaddrinfo.c,v 1.82 2006/03/25 12:09:40 rpaulo Exp $ */
/* $KAME: getaddrinfo.c,v 1.29 2000/08/31 17:26:57 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
*
*/
/*
* This is an adaptation of Android's implementation of RFC 6724
* (in Android's getaddrinfo.c). It has some cosmetic differences
* from Android's getaddrinfo.c, but Android's getaddrinfo.c was
* used as a guide or example of a way to implement the RFC 6724 spec when
* this was written.
*/
#include "address_sorting_internal.h"
#if defined(ADDRESS_SORTING_WINDOWS)
#include <errno.h>
#include <inttypes.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
static bool windows_source_addr_factory_get_source_addr(
address_sorting_source_addr_factory* factory,
const address_sorting_address* dest_addr,
address_sorting_address* source_addr) {
bool source_addr_exists = false;
SOCKET s = socket(((struct sockaddr_in6*)dest_addr)->sin6_family, SOCK_DGRAM,
IPPROTO_UDP);
if (s != INVALID_SOCKET) {
if (connect(s, (struct sockaddr*)dest_addr, (int)dest_addr->len) == 0) {
address_sorting_address found_source_addr;
memset(&found_source_addr, 0, sizeof(found_source_addr));
found_source_addr.len = sizeof(found_source_addr.addr);
if (getsockname(s, (struct sockaddr*)&found_source_addr.addr,
(socklen_t*)&found_source_addr.len) == 0) {
source_addr_exists = true;
*source_addr = found_source_addr;
}
}
closesocket(s);
}
return source_addr_exists;
}
static void windows_source_addr_factory_destroy(
address_sorting_source_addr_factory* self) {
free(self);
}
static const address_sorting_source_addr_factory_vtable
windows_source_addr_factory_vtable = {
windows_source_addr_factory_get_source_addr,
windows_source_addr_factory_destroy,
};
address_sorting_source_addr_factory*
address_sorting_create_source_addr_factory_for_current_platform() {
address_sorting_source_addr_factory* factory =
malloc(sizeof(address_sorting_source_addr_factory));
memset(factory, 0, sizeof(address_sorting_source_addr_factory));
factory->vtable = &windows_source_addr_factory_vtable;
return factory;
}
#endif // defined(ADDRESS_SORTING_WINDOWS)
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