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() */
24 #define _DEFAULT_SOURCE
29 #include "os_support.h"
36 #endif /* HAVE_SYS_TIME_H */
39 #elif HAVE_SYS_SELECT_H
40 #include <sys/select.h>
41 #endif /* HAVE_WINSOCK2_H */
42 #endif /* !HAVE_POLL_H */
50 static int inet_aton(const char *str, struct in_addr *add)
52 unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
54 if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
57 if (!add1 || (add1 | add2 | add3 | add4) > 255)
60 add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4);
64 #endif /* !HAVE_INET_ATON */
66 int ff_getaddrinfo(const char *node, const char *service,
67 const struct addrinfo *hints, struct addrinfo **res)
69 struct hostent *h = NULL;
71 struct sockaddr_in *sin;
74 sin = av_mallocz(sizeof(struct sockaddr_in));
77 sin->sin_family = AF_INET;
80 if (!inet_aton(node, &sin->sin_addr)) {
81 if (hints && (hints->ai_flags & AI_NUMERICHOST)) {
85 h = gethostbyname(node);
90 memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr));
93 if (hints && (hints->ai_flags & AI_PASSIVE))
94 sin->sin_addr.s_addr = INADDR_ANY;
96 sin->sin_addr.s_addr = INADDR_LOOPBACK;
99 /* Note: getaddrinfo allows service to be a string, which
100 * should be looked up using getservbyname. */
102 sin->sin_port = htons(atoi(service));
104 ai = av_mallocz(sizeof(struct addrinfo));
111 ai->ai_family = AF_INET;
112 ai->ai_socktype = hints ? hints->ai_socktype : 0;
113 switch (ai->ai_socktype) {
115 ai->ai_protocol = IPPROTO_TCP;
118 ai->ai_protocol = IPPROTO_UDP;
125 ai->ai_addr = (struct sockaddr *)sin;
126 ai->ai_addrlen = sizeof(struct sockaddr_in);
127 if (hints && (hints->ai_flags & AI_CANONNAME))
128 ai->ai_canonname = h ? av_strdup(h->h_name) : NULL;
134 void ff_freeaddrinfo(struct addrinfo *res)
136 av_freep(&res->ai_canonname);
137 av_freep(&res->ai_addr);
141 int ff_getnameinfo(const struct sockaddr *sa, int salen,
142 char *host, int hostlen,
143 char *serv, int servlen, int flags)
145 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
147 if (sa->sa_family != AF_INET)
152 if (host && hostlen > 0) {
153 struct hostent *ent = NULL;
155 if (!(flags & NI_NUMERICHOST))
156 ent = gethostbyaddr((const char *)&sin->sin_addr,
157 sizeof(sin->sin_addr), AF_INET);
160 snprintf(host, hostlen, "%s", ent->h_name);
161 } else if (flags & NI_NAMERQD) {
164 a = ntohl(sin->sin_addr.s_addr);
165 snprintf(host, hostlen, "%d.%d.%d.%d",
166 ((a >> 24) & 0xff), ((a >> 16) & 0xff),
167 ((a >> 8) & 0xff), (a & 0xff));
171 if (serv && servlen > 0) {
172 if (!(flags & NI_NUMERICSERV))
174 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
179 #endif /* !HAVE_GETADDRINFO */
181 #if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H
182 const char *ff_gai_strerror(int ecode)
186 return "Temporary failure in name resolution";
188 return "Invalid flags for ai_flags";
190 return "A non-recoverable error occurred";
192 return "The address family was not recognized or the address "
193 "length was invalid for the specified family";
195 return "Memory allocation failure";
196 #if EAI_NODATA != EAI_NONAME
198 return "No address associated with hostname";
199 #endif /* EAI_NODATA != EAI_NONAME */
201 return "The name does not resolve for the supplied parameters";
203 return "servname not supported for ai_socktype";
205 return "ai_socktype not supported";
208 return "Unknown error";
210 #endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */
212 int ff_socket_nonblock(int socket, int enable)
215 u_long param = enable;
216 return ioctlsocket(socket, FIONBIO, ¶m);
219 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
221 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
222 #endif /* HAVE_WINSOCK2_H */
226 int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout)
230 fd_set exception_set;
236 if (numfds >= FD_SETSIZE) {
240 #endif /* HAVE_WINSOCK2_H */
244 FD_ZERO(&exception_set);
247 for (i = 0; i < numfds; i++) {
251 if (fds[i].fd >= FD_SETSIZE) {
255 #endif /* !HAVE_WINSOCK2_H */
257 if (fds[i].events & POLLIN)
258 FD_SET(fds[i].fd, &read_set);
259 if (fds[i].events & POLLOUT)
260 FD_SET(fds[i].fd, &write_set);
261 if (fds[i].events & POLLERR)
262 FD_SET(fds[i].fd, &exception_set);
269 /* Hey!? Nothing to poll, in fact!!! */
273 rc = select(n, &read_set, &write_set, &exception_set, NULL);
276 tv.tv_sec = timeout / 1000;
277 tv.tv_usec = 1000 * (timeout % 1000);
278 rc = select(n, &read_set, &write_set, &exception_set, &tv);
284 for (i = 0; i < numfds; i++) {
287 if (FD_ISSET(fds[i].fd, &read_set))
288 fds[i].revents |= POLLIN;
289 if (FD_ISSET(fds[i].fd, &write_set))
290 fds[i].revents |= POLLOUT;
291 if (FD_ISSET(fds[i].fd, &exception_set))
292 fds[i].revents |= POLLERR;
297 #endif /* !HAVE_POLL_H */
299 #endif /* CONFIG_NETWORK */