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100 lines
2.7 KiB
100 lines
2.7 KiB
/*
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* win32.c - Win32 port helpers
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*
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* Copyright (C) 2014, Linus Yang <linusyang@gmail.com>
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*
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* This file is part of the shadowsocks-libev.
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*
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* shadowsocks-libev is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* shadowsocks-libev is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with shadowsocks-libev; see the file COPYING. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include "win32.h"
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#include "utils.h"
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#ifdef setsockopt
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#undef setsockopt
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#endif
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void winsock_init(void)
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{
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WORD wVersionRequested;
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WSADATA wsaData;
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int ret;
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wVersionRequested = MAKEWORD(1, 1);
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ret = WSAStartup(wVersionRequested, &wsaData);
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if (ret != 0) {
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FATAL("Could not initialize winsock");
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}
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if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) {
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WSACleanup();
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FATAL("Could not find a usable version of winsock");
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}
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}
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void winsock_cleanup(void)
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{
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WSACleanup();
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}
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void ss_error(const char *s)
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{
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LPVOID *msg = NULL;
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FormatMessage(
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FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL, WSAGetLastError(),
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR)&msg, 0, NULL);
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if (msg != NULL) {
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LOGE("%s: %s", s, (char *)msg);
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LocalFree(msg);
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}
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}
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int setnonblocking(int fd)
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{
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u_long iMode = 0;
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long int iResult;
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iResult = ioctlsocket(fd, FIONBIO, &iMode);
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if (iResult != NO_ERROR) {
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LOGE("ioctlsocket failed with error: %ld\n", iResult);
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}
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return iResult;
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}
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size_t strnlen(const char *s, size_t maxlen)
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{
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const char *end = memchr(s, 0, maxlen);
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return end ? (size_t)(end - s) : maxlen;
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}
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const char *inet_ntop(int af, const void *src, char *dst, socklen_t size)
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{
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struct sockaddr_storage ss;
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unsigned long s = size;
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ZeroMemory(&ss, sizeof(ss));
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ss.ss_family = af;
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switch (af) {
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case AF_INET:
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((struct sockaddr_in *)&ss)->sin_addr = *(struct in_addr *)src;
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break;
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case AF_INET6:
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((struct sockaddr_in6 *)&ss)->sin6_addr = *(struct in6_addr *)src;
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break;
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default:
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return NULL;
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}
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return (WSAAddressToString((struct sockaddr *)&ss, sizeof(ss), NULL, dst,
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&s) == 0) ? dst : NULL;
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}
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