tor-android/external/badvpn_dns/system/BNetwork.c

100 lines
2.8 KiB
C

/**
* @file BNetwork.c
* @author Ambroz Bizjak <ambrop7@gmail.com>
*
* @section LICENSE
*
* 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 author 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 COPYRIGHT HOLDERS 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 AUTHOR 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.
*/
#ifdef BADVPN_USE_WINAPI
#include <windows.h>
#include <winsock2.h>
#include <mswsock.h>
#else
#include <string.h>
#include <signal.h>
#endif
#include <misc/debug.h>
#include <base/BLog.h>
#include <system/BNetwork.h>
#include <generated/blog_channel_BNetwork.h>
extern int bnetwork_initialized;
#ifndef BADVPN_PLUGIN
int bnetwork_initialized = 0;
#endif
int BNetwork_GlobalInit (void)
{
ASSERT(!bnetwork_initialized)
#ifdef BADVPN_USE_WINAPI
WORD requested = MAKEWORD(2, 2);
WSADATA wsadata;
if (WSAStartup(requested, &wsadata) != 0) {
BLog(BLOG_ERROR, "WSAStartup failed");
goto fail0;
}
if (wsadata.wVersion != requested) {
BLog(BLOG_ERROR, "WSAStartup returned wrong version");
goto fail1;
}
#else
struct sigaction act;
memset(&act, 0, sizeof(act));
act.sa_handler = SIG_IGN;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
if (sigaction(SIGPIPE, &act, NULL) < 0) {
BLog(BLOG_ERROR, "sigaction failed");
goto fail0;
}
#endif
bnetwork_initialized = 1;
return 1;
#ifdef BADVPN_USE_WINAPI
fail1:
WSACleanup();
#endif
fail0:
return 0;
}
void BNetwork_Assert (void)
{
ASSERT(bnetwork_initialized)
}