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"
35 #endif /* HAVE_SYS_TIME_H */
38 #elif HAVE_SYS_SELECT_H
39 #include <sys/select.h>
40 #endif /* HAVE_WINSOCK2_H */
41 #endif /* !HAVE_POLL_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
);
85 #endif /* HAVE_WINSOCK2_H */
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
);
159 #endif /* HAVE_WINSOCK2_H */
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
);
180 #endif /* HAVE_WINSOCK2_H */
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");
211 #endif /* HAVE_GETSERVBYPORT */
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";
241 #endif /* EAI_NODATA != EAI_NONAME */
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
);
264 #endif /* HAVE_WINSOCK2_H */
268 int ff_poll(struct pollfd
*fds
, nfds_t numfds
, int timeout
)
272 fd_set exception_set
;
278 if (numfds
>= FD_SETSIZE
) {
282 #endif /* HAVE_WINSOCK2_H */
286 FD_ZERO(&exception_set
);
289 for (i
= 0; i
< numfds
; i
++) {
293 if (fds
[i
].fd
>= FD_SETSIZE
) {
297 #endif /* !HAVE_WINSOCK2_H */
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 */
341 #endif /* CONFIG_NETWORK */