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__)
34 int ff_win32_open(const char *filename_utf8, int oflag, int pmode)
40 /* convert UTF-8 to wide chars */
41 num_chars = MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, NULL, 0);
44 filename_w = av_mallocz(sizeof(wchar_t) * num_chars);
45 MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, filename_w, num_chars);
47 fd = _wopen(filename_w, oflag, pmode);
48 av_freep(&filename_w);
50 /* filename maybe be in CP_ACP */
51 if (fd == -1 && !(oflag & O_CREAT))
52 return open(filename_utf8, oflag, pmode);
65 #elif HAVE_SYS_SELECT_H
66 #include <sys/select.h>
75 int ff_inet_aton (const char * str, struct in_addr * add)
77 unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
79 if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
82 if (!add1 || (add1|add2|add3|add4) > 255) return 0;
84 add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4);
89 int ff_inet_aton (const char * str, struct in_addr * add)
91 return inet_aton(str, add);
93 #endif /* !HAVE_INET_ATON */
96 int ff_getaddrinfo(const char *node, const char *service,
97 const struct addrinfo *hints, struct addrinfo **res)
99 struct hostent *h = NULL;
101 struct sockaddr_in *sin;
104 int (WSAAPI *win_getaddrinfo)(const char *node, const char *service,
105 const struct addrinfo *hints,
106 struct addrinfo **res);
107 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
108 win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo");
110 return win_getaddrinfo(node, service, hints, res);
114 sin = av_mallocz(sizeof(struct sockaddr_in));
117 sin->sin_family = AF_INET;
120 if (!ff_inet_aton(node, &sin->sin_addr)) {
121 if (hints && (hints->ai_flags & AI_NUMERICHOST)) {
125 h = gethostbyname(node);
130 memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr));
133 if (hints && (hints->ai_flags & AI_PASSIVE)) {
134 sin->sin_addr.s_addr = INADDR_ANY;
136 sin->sin_addr.s_addr = INADDR_LOOPBACK;
139 /* Note: getaddrinfo allows service to be a string, which
140 * should be looked up using getservbyname. */
142 sin->sin_port = htons(atoi(service));
144 ai = av_mallocz(sizeof(struct addrinfo));
151 ai->ai_family = AF_INET;
152 ai->ai_socktype = hints ? hints->ai_socktype : 0;
153 switch (ai->ai_socktype) {
154 case SOCK_STREAM: ai->ai_protocol = IPPROTO_TCP; break;
155 case SOCK_DGRAM: ai->ai_protocol = IPPROTO_UDP; break;
156 default: ai->ai_protocol = 0; break;
159 ai->ai_addr = (struct sockaddr *)sin;
160 ai->ai_addrlen = sizeof(struct sockaddr_in);
161 if (hints && (hints->ai_flags & AI_CANONNAME))
162 ai->ai_canonname = h ? av_strdup(h->h_name) : NULL;
168 void ff_freeaddrinfo(struct addrinfo *res)
171 void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res);
172 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
173 win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res))
174 GetProcAddress(ws2mod, "freeaddrinfo");
175 if (win_freeaddrinfo) {
176 win_freeaddrinfo(res);
181 av_free(res->ai_canonname);
182 av_free(res->ai_addr);
186 int ff_getnameinfo(const struct sockaddr *sa, int salen,
187 char *host, int hostlen,
188 char *serv, int servlen, int flags)
190 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
193 int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
194 char *host, DWORD hostlen,
195 char *serv, DWORD servlen, int flags);
196 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
197 win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo");
199 return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
202 if (sa->sa_family != AF_INET)
207 if (host && hostlen > 0) {
208 struct hostent *ent = NULL;
210 if (!(flags & NI_NUMERICHOST))
211 ent = gethostbyaddr((const char *)&sin->sin_addr,
212 sizeof(sin->sin_addr), AF_INET);
215 snprintf(host, hostlen, "%s", ent->h_name);
216 } else if (flags & NI_NAMERQD) {
219 a = ntohl(sin->sin_addr.s_addr);
220 snprintf(host, hostlen, "%d.%d.%d.%d",
221 ((a >> 24) & 0xff), ((a >> 16) & 0xff),
222 ((a >> 8) & 0xff), ( a & 0xff));
226 if (serv && servlen > 0) {
227 struct servent *ent = NULL;
228 if (!(flags & NI_NUMERICSERV))
229 ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp");
232 snprintf(serv, servlen, "%s", ent->s_name);
234 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
240 const char *ff_gai_strerror(int ecode)
243 case EAI_FAIL : return "A non-recoverable error occurred";
244 case EAI_FAMILY : return "The address family was not recognized or the address length was invalid for the specified family";
245 case EAI_NONAME : return "The name does not resolve for the supplied parameters";
248 return "Unknown error";
252 int ff_socket_nonblock(int socket, int enable)
255 return ioctlsocket(socket, FIONBIO, &enable);
258 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
260 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
265 int poll(struct pollfd *fds, nfds_t numfds, int timeout)
269 fd_set exception_set;
275 if (numfds >= FD_SETSIZE) {
283 FD_ZERO(&exception_set);
286 for(i = 0; i < numfds; i++) {
290 if (fds[i].fd >= FD_SETSIZE) {
296 if (fds[i].events & POLLIN) FD_SET(fds[i].fd, &read_set);
297 if (fds[i].events & POLLOUT) FD_SET(fds[i].fd, &write_set);
298 if (fds[i].events & POLLERR) FD_SET(fds[i].fd, &exception_set);
305 /* Hey!? Nothing to poll, in fact!!! */
309 rc = select(n+1, &read_set, &write_set, &exception_set, NULL);
313 tv.tv_sec = timeout / 1000;
314 tv.tv_usec = 1000 * (timeout % 1000);
315 rc = select(n+1, &read_set, &write_set, &exception_set, &tv);
321 for(i = 0; i < numfds; i++) {
324 if (FD_ISSET(fds[i].fd, &read_set)) fds[i].revents |= POLLIN;
325 if (FD_ISSET(fds[i].fd, &write_set)) fds[i].revents |= POLLOUT;
326 if (FD_ISSET(fds[i].fd, &exception_set)) fds[i].revents |= POLLERR;
331 #endif /* HAVE_POLL_H */
332 #endif /* CONFIG_NETWORK */