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"
38 #elif HAVE_SYS_SELECT_H
39 #include <sys/select.h>
48 int ff_inet_aton(const char *str, struct in_addr *add)
50 unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
52 if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
55 if (!add1 || (add1 | add2 | add3 | add4) > 255)
58 add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4);
63 int ff_inet_aton(const char *str, struct in_addr *add)
65 return inet_aton(str, add);
67 #endif /* !HAVE_INET_ATON */
70 int ff_getaddrinfo(const char *node, const char *service,
71 const struct addrinfo *hints, struct addrinfo **res)
73 struct hostent *h = NULL;
75 struct sockaddr_in *sin;
78 int (WSAAPI *win_getaddrinfo)(const char *node, const char *service,
79 const struct addrinfo *hints,
80 struct addrinfo **res);
81 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
82 win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo");
84 return win_getaddrinfo(node, service, hints, res);
88 sin = av_mallocz(sizeof(struct sockaddr_in));
91 sin->sin_family = AF_INET;
94 if (!ff_inet_aton(node, &sin->sin_addr)) {
95 if (hints && (hints->ai_flags & AI_NUMERICHOST)) {
99 h = gethostbyname(node);
104 memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr));
107 if (hints && (hints->ai_flags & AI_PASSIVE))
108 sin->sin_addr.s_addr = INADDR_ANY;
110 sin->sin_addr.s_addr = INADDR_LOOPBACK;
113 /* Note: getaddrinfo allows service to be a string, which
114 * should be looked up using getservbyname. */
116 sin->sin_port = htons(atoi(service));
118 ai = av_mallocz(sizeof(struct addrinfo));
125 ai->ai_family = AF_INET;
126 ai->ai_socktype = hints ? hints->ai_socktype : 0;
127 switch (ai->ai_socktype) {
129 ai->ai_protocol = IPPROTO_TCP;
132 ai->ai_protocol = IPPROTO_UDP;
139 ai->ai_addr = (struct sockaddr *)sin;
140 ai->ai_addrlen = sizeof(struct sockaddr_in);
141 if (hints && (hints->ai_flags & AI_CANONNAME))
142 ai->ai_canonname = h ? av_strdup(h->h_name) : NULL;
148 void ff_freeaddrinfo(struct addrinfo *res)
151 void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res);
152 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
153 win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res))
154 GetProcAddress(ws2mod, "freeaddrinfo");
155 if (win_freeaddrinfo) {
156 win_freeaddrinfo(res);
161 av_free(res->ai_canonname);
162 av_free(res->ai_addr);
166 int ff_getnameinfo(const struct sockaddr *sa, int salen,
167 char *host, int hostlen,
168 char *serv, int servlen, int flags)
170 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
173 int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
174 char *host, DWORD hostlen,
175 char *serv, DWORD servlen, int flags);
176 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
177 win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo");
179 return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
182 if (sa->sa_family != AF_INET)
187 if (host && hostlen > 0) {
188 struct hostent *ent = NULL;
190 if (!(flags & NI_NUMERICHOST))
191 ent = gethostbyaddr((const char *)&sin->sin_addr,
192 sizeof(sin->sin_addr), AF_INET);
195 snprintf(host, hostlen, "%s", ent->h_name);
196 } else if (flags & NI_NAMERQD) {
199 a = ntohl(sin->sin_addr.s_addr);
200 snprintf(host, hostlen, "%d.%d.%d.%d",
201 ((a >> 24) & 0xff), ((a >> 16) & 0xff),
202 ((a >> 8) & 0xff), (a & 0xff));
206 if (serv && servlen > 0) {
207 struct servent *ent = NULL;
208 #if HAVE_GETSERVBYPORT
209 if (!(flags & NI_NUMERICSERV))
210 ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp");
214 snprintf(serv, servlen, "%s", ent->s_name);
216 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
221 #endif /* !HAVE_GETADDRINFO */
223 #if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H
224 const char *ff_gai_strerror(int ecode)
228 return "Temporary failure in name resolution";
230 return "Invalid flags for ai_flags";
232 return "A non-recoverable error occurred";
234 return "The address family was not recognized or the address "
235 "length was invalid for the specified family";
237 return "Memory allocation failure";
238 #if EAI_NODATA != EAI_NONAME
240 return "No address associated with hostname";
243 return "The name does not resolve for the supplied parameters";
245 return "servname not supported for ai_socktype";
247 return "ai_socktype not supported";
250 return "Unknown error";
252 #endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */
254 int ff_socket_nonblock(int socket, int enable)
257 u_long param = enable;
258 return ioctlsocket(socket, FIONBIO, ¶m);
261 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
263 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
268 int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout)
272 fd_set exception_set;
278 if (numfds >= FD_SETSIZE) {
286 FD_ZERO(&exception_set);
289 for (i = 0; i < numfds; i++) {
293 if (fds[i].fd >= FD_SETSIZE) {
299 if (fds[i].events & POLLIN)
300 FD_SET(fds[i].fd, &read_set);
301 if (fds[i].events & POLLOUT)
302 FD_SET(fds[i].fd, &write_set);
303 if (fds[i].events & POLLERR)
304 FD_SET(fds[i].fd, &exception_set);
311 /* Hey!? Nothing to poll, in fact!!! */
315 rc = select(n, &read_set, &write_set, &exception_set, NULL);
318 tv.tv_sec = timeout / 1000;
319 tv.tv_usec = 1000 * (timeout % 1000);
320 rc = select(n, &read_set, &write_set, &exception_set, &tv);
326 for (i = 0; i < numfds; i++) {
329 if (FD_ISSET(fds[i].fd, &read_set))
330 fds[i].revents |= POLLIN;
331 if (FD_ISSET(fds[i].fd, &write_set))
332 fds[i].revents |= POLLOUT;
333 if (FD_ISSET(fds[i].fd, &exception_set))
334 fds[i].revents |= POLLERR;
339 #endif /* HAVE_POLL_H */
340 #endif /* CONFIG_NETWORK */