2 * Various utilities for ffmpeg system
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() */
25 #define _DARWIN_C_SOURCE
29 #include "os_support.h"
38 #elif HAVE_SYS_SELECT_H
39 #include <sys/select.h>
49 int ff_inet_aton (const char * str, struct in_addr * add)
51 unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
53 if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
56 if (!add1 || (add1|add2|add3|add4) > 255) return 0;
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) {
128 case SOCK_STREAM: ai->ai_protocol = IPPROTO_TCP; break;
129 case SOCK_DGRAM: ai->ai_protocol = IPPROTO_UDP; break;
130 default: ai->ai_protocol = 0; break;
133 ai->ai_addr = (struct sockaddr *)sin;
134 ai->ai_addrlen = sizeof(struct sockaddr_in);
135 if (hints && (hints->ai_flags & AI_CANONNAME))
136 ai->ai_canonname = h ? av_strdup(h->h_name) : NULL;
142 void ff_freeaddrinfo(struct addrinfo *res)
145 void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res);
146 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
147 win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res))
148 GetProcAddress(ws2mod, "freeaddrinfo");
149 if (win_freeaddrinfo) {
150 win_freeaddrinfo(res);
155 av_free(res->ai_canonname);
156 av_free(res->ai_addr);
160 int ff_getnameinfo(const struct sockaddr *sa, int salen,
161 char *host, int hostlen,
162 char *serv, int servlen, int flags)
164 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
167 int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
168 char *host, DWORD hostlen,
169 char *serv, DWORD servlen, int flags);
170 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
171 win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo");
173 return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
176 if (sa->sa_family != AF_INET)
181 if (host && hostlen > 0) {
182 struct hostent *ent = NULL;
184 if (!(flags & NI_NUMERICHOST))
185 ent = gethostbyaddr((const char *)&sin->sin_addr,
186 sizeof(sin->sin_addr), AF_INET);
189 snprintf(host, hostlen, "%s", ent->h_name);
190 } else if (flags & NI_NAMERQD) {
193 a = ntohl(sin->sin_addr.s_addr);
194 snprintf(host, hostlen, "%d.%d.%d.%d",
195 ((a >> 24) & 0xff), ((a >> 16) & 0xff),
196 ((a >> 8) & 0xff), ( a & 0xff));
200 if (serv && servlen > 0) {
201 struct servent *ent = NULL;
202 if (!(flags & NI_NUMERICSERV))
203 ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp");
206 snprintf(serv, servlen, "%s", ent->s_name);
208 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
214 const char *ff_gai_strerror(int ecode)
217 case EAI_FAIL : return "A non-recoverable error occurred";
218 case EAI_FAMILY : return "The address family was not recognized or the address length was invalid for the specified family";
219 case EAI_NONAME : return "The name does not resolve for the supplied parameters";
222 return "Unknown error";
226 int ff_socket_nonblock(int socket, int enable)
229 return ioctlsocket(socket, FIONBIO, &enable);
232 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
234 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
237 #endif /* CONFIG_NETWORK */
240 int poll(struct pollfd *fds, nfds_t numfds, int timeout)
244 fd_set exception_set;
250 if (numfds >= FD_SETSIZE) {
258 FD_ZERO(&exception_set);
261 for(i = 0; i < numfds; i++) {
265 if (fds[i].fd >= FD_SETSIZE) {
271 if (fds[i].events & POLLIN) FD_SET(fds[i].fd, &read_set);
272 if (fds[i].events & POLLOUT) FD_SET(fds[i].fd, &write_set);
273 if (fds[i].events & POLLERR) FD_SET(fds[i].fd, &exception_set);
280 /* Hey!? Nothing to poll, in fact!!! */
284 rc = select(n+1, &read_set, &write_set, &exception_set, NULL);
288 tv.tv_sec = timeout / 1000;
289 tv.tv_usec = 1000 * (timeout % 1000);
290 rc = select(n+1, &read_set, &write_set, &exception_set, &tv);
296 for(i = 0; i < (nfds_t) n; i++) {
299 if (FD_ISSET(fds[i].fd, &read_set)) fds[i].revents |= POLLIN;
300 if (FD_ISSET(fds[i].fd, &write_set)) fds[i].revents |= POLLOUT;
301 if (FD_ISSET(fds[i].fd, &exception_set)) fds[i].revents |= POLLERR;
306 #endif /* HAVE_POLL_H */