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 FFmpeg.
8 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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__)
37 int ff_win32_open(const char *filename_utf8, int oflag, int pmode)
43 /* convert UTF-8 to wide chars */
44 num_chars = MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, NULL, 0);
47 filename_w = av_mallocz(sizeof(wchar_t) * num_chars);
48 MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, filename_w, num_chars);
50 fd = _wsopen(filename_w, oflag, SH_DENYNO, pmode);
51 av_freep(&filename_w);
53 /* filename maybe be in CP_ACP */
54 if (fd == -1 && !(oflag & O_CREAT))
55 return _sopen(filename_utf8, oflag, SH_DENYNO, pmode);
69 #elif HAVE_SYS_SELECT_H
70 #include <sys/select.h>
79 int ff_inet_aton(const char *str, struct in_addr *add)
81 unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
83 if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
86 if (!add1 || (add1 | add2 | add3 | add4) > 255)
89 add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4);
94 int ff_inet_aton(const char *str, struct in_addr *add)
96 return inet_aton(str, add);
98 #endif /* !HAVE_INET_ATON */
100 #if !HAVE_GETADDRINFO
101 int ff_getaddrinfo(const char *node, const char *service,
102 const struct addrinfo *hints, struct addrinfo **res)
104 struct hostent *h = NULL;
106 struct sockaddr_in *sin;
109 int (WSAAPI *win_getaddrinfo)(const char *node, const char *service,
110 const struct addrinfo *hints,
111 struct addrinfo **res);
112 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
113 win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo");
115 return win_getaddrinfo(node, service, hints, res);
119 sin = av_mallocz(sizeof(struct sockaddr_in));
122 sin->sin_family = AF_INET;
125 if (!ff_inet_aton(node, &sin->sin_addr)) {
126 if (hints && (hints->ai_flags & AI_NUMERICHOST)) {
130 h = gethostbyname(node);
135 memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr));
138 if (hints && (hints->ai_flags & AI_PASSIVE))
139 sin->sin_addr.s_addr = INADDR_ANY;
141 sin->sin_addr.s_addr = INADDR_LOOPBACK;
144 /* Note: getaddrinfo allows service to be a string, which
145 * should be looked up using getservbyname. */
147 sin->sin_port = htons(atoi(service));
149 ai = av_mallocz(sizeof(struct addrinfo));
156 ai->ai_family = AF_INET;
157 ai->ai_socktype = hints ? hints->ai_socktype : 0;
158 switch (ai->ai_socktype) {
160 ai->ai_protocol = IPPROTO_TCP;
163 ai->ai_protocol = IPPROTO_UDP;
170 ai->ai_addr = (struct sockaddr *)sin;
171 ai->ai_addrlen = sizeof(struct sockaddr_in);
172 if (hints && (hints->ai_flags & AI_CANONNAME))
173 ai->ai_canonname = h ? av_strdup(h->h_name) : NULL;
179 void ff_freeaddrinfo(struct addrinfo *res)
182 void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res);
183 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
184 win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res))
185 GetProcAddress(ws2mod, "freeaddrinfo");
186 if (win_freeaddrinfo) {
187 win_freeaddrinfo(res);
192 av_free(res->ai_canonname);
193 av_free(res->ai_addr);
197 int ff_getnameinfo(const struct sockaddr *sa, int salen,
198 char *host, int hostlen,
199 char *serv, int servlen, int flags)
201 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
204 int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
205 char *host, DWORD hostlen,
206 char *serv, DWORD servlen, int flags);
207 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
208 win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo");
210 return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
213 if (sa->sa_family != AF_INET)
218 if (host && hostlen > 0) {
219 struct hostent *ent = NULL;
221 if (!(flags & NI_NUMERICHOST))
222 ent = gethostbyaddr((const char *)&sin->sin_addr,
223 sizeof(sin->sin_addr), AF_INET);
226 snprintf(host, hostlen, "%s", ent->h_name);
227 } else if (flags & NI_NAMERQD) {
230 a = ntohl(sin->sin_addr.s_addr);
231 snprintf(host, hostlen, "%d.%d.%d.%d",
232 ((a >> 24) & 0xff), ((a >> 16) & 0xff),
233 ((a >> 8) & 0xff), (a & 0xff));
237 if (serv && servlen > 0) {
238 struct servent *ent = NULL;
239 if (!(flags & NI_NUMERICSERV))
240 ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp");
243 snprintf(serv, servlen, "%s", ent->s_name);
245 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
250 #endif /* !HAVE_GETADDRINFO */
252 #if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H
253 const char *ff_gai_strerror(int ecode)
257 return "Temporary failure in name resolution";
259 return "Invalid flags for ai_flags";
261 return "A non-recoverable error occurred";
263 return "The address family was not recognized or the address "
264 "length was invalid for the specified family";
266 return "Memory allocation failure";
267 #if EAI_NODATA != EAI_NONAME
269 return "No address associated with hostname";
272 return "The name does not resolve for the supplied parameters";
274 return "servname not supported for ai_socktype";
276 return "ai_socktype not supported";
279 return "Unknown error";
281 #endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */
283 int ff_socket_nonblock(int socket, int enable)
286 u_long param = enable;
287 return ioctlsocket(socket, FIONBIO, ¶m);
290 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
292 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
297 int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout)
301 fd_set exception_set;
307 if (numfds >= FD_SETSIZE) {
315 FD_ZERO(&exception_set);
318 for (i = 0; i < numfds; i++) {
322 if (fds[i].fd >= FD_SETSIZE) {
328 if (fds[i].events & POLLIN)
329 FD_SET(fds[i].fd, &read_set);
330 if (fds[i].events & POLLOUT)
331 FD_SET(fds[i].fd, &write_set);
332 if (fds[i].events & POLLERR)
333 FD_SET(fds[i].fd, &exception_set);
340 /* Hey!? Nothing to poll, in fact!!! */
344 rc = select(n, &read_set, &write_set, &exception_set, NULL);
347 tv.tv_sec = timeout / 1000;
348 tv.tv_usec = 1000 * (timeout % 1000);
349 rc = select(n, &read_set, &write_set, &exception_set, &tv);
355 for (i = 0; i < numfds; i++) {
358 if (FD_ISSET(fds[i].fd, &read_set))
359 fds[i].revents |= POLLIN;
360 if (FD_ISSET(fds[i].fd, &write_set))
361 fds[i].revents |= POLLOUT;
362 if (FD_ISSET(fds[i].fd, &exception_set))
363 fds[i].revents |= POLLERR;
368 #endif /* HAVE_POLL_H */
369 #endif /* CONFIG_NETWORK */