2 * various OS-feature replacement utilities
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * copyright (c) 2002 Francois Revol
6 * This file is part of Libav.
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 /* needed by inet_aton() */
28 #include "os_support.h"
30 #if defined(_WIN32) && !defined(__MINGW32CE__)
36 int ff_win32_open(const char *filename_utf8, int oflag, int pmode)
42 /* convert UTF-8 to wide chars */
43 num_chars = MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, NULL, 0);
46 filename_w = av_mallocz(sizeof(wchar_t) * num_chars);
47 MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, filename_w, num_chars);
49 fd = _wopen(filename_w, oflag, pmode);
50 av_freep(&filename_w);
52 /* filename maybe be in CP_ACP */
53 if (fd == -1 && !(oflag & O_CREAT))
54 return open(filename_utf8, oflag, pmode);
68 #elif HAVE_SYS_SELECT_H
69 #include <sys/select.h>
78 int ff_inet_aton (const char * str, struct in_addr * add)
80 unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
82 if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
85 if (!add1 || (add1|add2|add3|add4) > 255) return 0;
87 add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4);
92 int ff_inet_aton (const char * str, struct in_addr * add)
94 return inet_aton(str, add);
96 #endif /* !HAVE_INET_ATON */
99 int ff_getaddrinfo(const char *node, const char *service,
100 const struct addrinfo *hints, struct addrinfo **res)
102 struct hostent *h = NULL;
104 struct sockaddr_in *sin;
107 int (WSAAPI *win_getaddrinfo)(const char *node, const char *service,
108 const struct addrinfo *hints,
109 struct addrinfo **res);
110 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
111 win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo");
113 return win_getaddrinfo(node, service, hints, res);
117 sin = av_mallocz(sizeof(struct sockaddr_in));
120 sin->sin_family = AF_INET;
123 if (!ff_inet_aton(node, &sin->sin_addr)) {
124 if (hints && (hints->ai_flags & AI_NUMERICHOST)) {
128 h = gethostbyname(node);
133 memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr));
136 if (hints && (hints->ai_flags & AI_PASSIVE)) {
137 sin->sin_addr.s_addr = INADDR_ANY;
139 sin->sin_addr.s_addr = INADDR_LOOPBACK;
142 /* Note: getaddrinfo allows service to be a string, which
143 * should be looked up using getservbyname. */
145 sin->sin_port = htons(atoi(service));
147 ai = av_mallocz(sizeof(struct addrinfo));
154 ai->ai_family = AF_INET;
155 ai->ai_socktype = hints ? hints->ai_socktype : 0;
156 switch (ai->ai_socktype) {
157 case SOCK_STREAM: ai->ai_protocol = IPPROTO_TCP; break;
158 case SOCK_DGRAM: ai->ai_protocol = IPPROTO_UDP; break;
159 default: ai->ai_protocol = 0; break;
162 ai->ai_addr = (struct sockaddr *)sin;
163 ai->ai_addrlen = sizeof(struct sockaddr_in);
164 if (hints && (hints->ai_flags & AI_CANONNAME))
165 ai->ai_canonname = h ? av_strdup(h->h_name) : NULL;
171 void ff_freeaddrinfo(struct addrinfo *res)
174 void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res);
175 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
176 win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res))
177 GetProcAddress(ws2mod, "freeaddrinfo");
178 if (win_freeaddrinfo) {
179 win_freeaddrinfo(res);
184 av_free(res->ai_canonname);
185 av_free(res->ai_addr);
189 int ff_getnameinfo(const struct sockaddr *sa, int salen,
190 char *host, int hostlen,
191 char *serv, int servlen, int flags)
193 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
196 int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
197 char *host, DWORD hostlen,
198 char *serv, DWORD servlen, int flags);
199 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
200 win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo");
202 return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
205 if (sa->sa_family != AF_INET)
210 if (host && hostlen > 0) {
211 struct hostent *ent = NULL;
213 if (!(flags & NI_NUMERICHOST))
214 ent = gethostbyaddr((const char *)&sin->sin_addr,
215 sizeof(sin->sin_addr), AF_INET);
218 snprintf(host, hostlen, "%s", ent->h_name);
219 } else if (flags & NI_NAMERQD) {
222 a = ntohl(sin->sin_addr.s_addr);
223 snprintf(host, hostlen, "%d.%d.%d.%d",
224 ((a >> 24) & 0xff), ((a >> 16) & 0xff),
225 ((a >> 8) & 0xff), ( a & 0xff));
229 if (serv && servlen > 0) {
230 struct servent *ent = NULL;
231 if (!(flags & NI_NUMERICSERV))
232 ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp");
235 snprintf(serv, servlen, "%s", ent->s_name);
237 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
243 const char *ff_gai_strerror(int ecode)
246 case EAI_FAIL : return "A non-recoverable error occurred";
247 case EAI_FAMILY : return "The address family was not recognized or the address length was invalid for the specified family";
248 case EAI_NONAME : return "The name does not resolve for the supplied parameters";
251 return "Unknown error";
255 int ff_socket_nonblock(int socket, int enable)
258 u_long param = enable;
259 return ioctlsocket(socket, FIONBIO, ¶m);
262 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
264 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
269 int poll(struct pollfd *fds, nfds_t numfds, int timeout)
273 fd_set exception_set;
279 if (numfds >= FD_SETSIZE) {
287 FD_ZERO(&exception_set);
290 for(i = 0; i < numfds; i++) {
294 if (fds[i].fd >= FD_SETSIZE) {
300 if (fds[i].events & POLLIN) FD_SET(fds[i].fd, &read_set);
301 if (fds[i].events & POLLOUT) FD_SET(fds[i].fd, &write_set);
302 if (fds[i].events & POLLERR) FD_SET(fds[i].fd, &exception_set);
309 /* Hey!? Nothing to poll, in fact!!! */
313 rc = select(n+1, &read_set, &write_set, &exception_set, NULL);
317 tv.tv_sec = timeout / 1000;
318 tv.tv_usec = 1000 * (timeout % 1000);
319 rc = select(n+1, &read_set, &write_set, &exception_set, &tv);
325 for(i = 0; i < numfds; i++) {
328 if (FD_ISSET(fds[i].fd, &read_set)) fds[i].revents |= POLLIN;
329 if (FD_ISSET(fds[i].fd, &write_set)) fds[i].revents |= POLLOUT;
330 if (FD_ISSET(fds[i].fd, &exception_set)) fds[i].revents |= POLLERR;
335 #endif /* HAVE_POLL_H */
336 #endif /* CONFIG_NETWORK */