FFmpeg: libavformat/network.h Source File

FFmpeg
network.h
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1 /*
2  * Copyright (c) 2007 The FFmpeg Project
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVFORMAT_NETWORK_H
22 #define AVFORMAT_NETWORK_H
23 
24 #include <errno.h>
25 #include <stdint.h>
26 
27 #include "config.h"
28 #include "libavutil/error.h"
29 #include "os_support.h"
30 #include "avio.h"
31 #include "url.h"
32 
33 #if HAVE_UNISTD_H
34 #include <unistd.h>
35 #endif
36 
37 #if HAVE_WINSOCK2_H
38 #include <winsock2.h>
39 #include <ws2tcpip.h>
40 
41 #ifndef EPROTONOSUPPORT
42 #define EPROTONOSUPPORT WSAEPROTONOSUPPORT
43 #endif
44 #ifndef ETIMEDOUT
45 #define ETIMEDOUT WSAETIMEDOUT
46 #endif
47 #ifndef ECONNREFUSED
48 #define ECONNREFUSED WSAECONNREFUSED
49 #endif
50 #ifndef EINPROGRESS
51 #define EINPROGRESS WSAEINPROGRESS
52 #endif
53 
54 #define getsockopt(a, b, c, d, e) getsockopt(a, b, c, (char*) d, e)
55 #define setsockopt(a, b, c, d, e) setsockopt(a, b, c, (const char*) d, e)
56 
57 int ff_neterrno(void);
58 #else
59 #include <sys/types.h>
60 #include <sys/socket.h>
61 #include <netinet/in.h>
62 #include <netdb.h>
63 
64  #define ff_neterrno() AVERROR(errno)
65 #endif /* HAVE_WINSOCK2_H */
66 
67 #if HAVE_ARPA_INET_H
68 #include <arpa/inet.h>
69 #endif
70 
71 #if HAVE_POLL_H
72 #include <poll.h>
73 #endif
74 
75 int ff_socket_nonblock(int socket, int enable);
76 
77 extern int ff_network_inited_globally;
78 int ff_network_init(void);
79 void ff_network_close(void);
80 
81 void ff_tls_init(void);
82 void ff_tls_deinit(void);
83 
84 int ff_network_wait_fd(int fd, int write);
85 
86 /**
87  * This works similarly to ff_network_wait_fd, but waits up to 'timeout' microseconds
88  * Uses ff_network_wait_fd in a loop
89  *
90  * @fd Socket descriptor
91  * @write Set 1 to wait for socket able to be read, 0 to be written
92  * @timeout Timeout interval, in microseconds. Actual precision is 100000 mcs, due to ff_network_wait_fd usage
93  * @param int_cb Interrupt callback, is checked before each ff_network_wait_fd call
94  * @return 0 if data can be read/written, AVERROR(ETIMEDOUT) if timeout expired, or negative error code
95  */
96 int ff_network_wait_fd_timeout(int fd, int write, int64_t timeout, AVIOInterruptCB *int_cb);
97 
98 int ff_inet_aton (const char * str, struct in_addr * add);
99 
100 #if !HAVE_STRUCT_SOCKADDR_STORAGE
101  struct sockaddr_storage {
102 #if HAVE_STRUCT_SOCKADDR_SA_LEN
103  uint8_t ss_len;
104  uint8_t ss_family;
105 #else
106   uint16_t ss_family;
107 #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */
108   char ss_pad1[6];
109   int64_t ss_align;
110   char ss_pad2[112];
111 };
112 #endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */
113 
114 #if !HAVE_STRUCT_ADDRINFO
115  struct addrinfo {
116   int ai_flags;
117   int ai_family;
118   int ai_socktype;
119   int ai_protocol;
120   int ai_addrlen;
121   struct sockaddr *ai_addr;
122   char *ai_canonname;
123   struct addrinfo *ai_next;
124 };
125 #endif /* !HAVE_STRUCT_ADDRINFO */
126 
127 /* getaddrinfo constants */
128 #ifndef EAI_AGAIN
129  #define EAI_AGAIN 2
130 #endif
131 #ifndef EAI_BADFLAGS
132  #define EAI_BADFLAGS 3
133 #endif
134 #ifndef EAI_FAIL
135  #define EAI_FAIL 4
136 #endif
137 #ifndef EAI_FAMILY
138  #define EAI_FAMILY 5
139 #endif
140 #ifndef EAI_MEMORY
141  #define EAI_MEMORY 6
142 #endif
143 #ifndef EAI_NODATA
144  #define EAI_NODATA 7
145 #endif
146 #ifndef EAI_NONAME
147  #define EAI_NONAME 8
148 #endif
149 #ifndef EAI_SERVICE
150  #define EAI_SERVICE 9
151 #endif
152 #ifndef EAI_SOCKTYPE
153  #define EAI_SOCKTYPE 10
154 #endif
155 
156 #ifndef AI_PASSIVE
157  #define AI_PASSIVE 1
158 #endif
159 
160 #ifndef AI_CANONNAME
161  #define AI_CANONNAME 2
162 #endif
163 
164 #ifndef AI_NUMERICHOST
165  #define AI_NUMERICHOST 4
166 #endif
167 
168 #ifndef NI_NOFQDN
169  #define NI_NOFQDN 1
170 #endif
171 
172 #ifndef NI_NUMERICHOST
173  #define NI_NUMERICHOST 2
174 #endif
175 
176 #ifndef NI_NAMERQD
177  #define NI_NAMERQD 4
178 #endif
179 
180 #ifndef NI_NUMERICSERV
181  #define NI_NUMERICSERV 8
182 #endif
183 
184 #ifndef NI_DGRAM
185  #define NI_DGRAM 16
186 #endif
187 
188 #if !HAVE_GETADDRINFO
189 int ff_getaddrinfo(const char *node, const char *service,
190  const struct addrinfo *hints, struct addrinfo **res);
191 void ff_freeaddrinfo(struct addrinfo *res);
192 int ff_getnameinfo(const struct sockaddr *sa, int salen,
193  char *host, int hostlen,
194  char *serv, int servlen, int flags);
195  #define getaddrinfo ff_getaddrinfo
196  #define freeaddrinfo ff_freeaddrinfo
197  #define getnameinfo ff_getnameinfo
198 #endif /* !HAVE_GETADDRINFO */
199 
200 #if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H
201 const char *ff_gai_strerror(int ecode);
202 #undef gai_strerror
203  #define gai_strerror ff_gai_strerror
204 #endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */
205 
206 #ifndef INADDR_LOOPBACK
207  #define INADDR_LOOPBACK 0x7f000001
208 #endif
209 
210 #ifndef INET_ADDRSTRLEN
211  #define INET_ADDRSTRLEN 16
212 #endif
213 
214 #ifndef INET6_ADDRSTRLEN
215  #define INET6_ADDRSTRLEN INET_ADDRSTRLEN
216 #endif
217 
218 #ifndef IN_MULTICAST
219  #define IN_MULTICAST(a) ((((uint32_t)(a)) & 0xf0000000) == 0xe0000000)
220 #endif
221 #ifndef IN6_IS_ADDR_MULTICAST
222  #define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
223 #endif
224 
225 int ff_is_multicast_address(struct sockaddr *addr);
226 
227  #define POLLING_TIME 100 /// Time in milliseconds between interrupt check
228 
229 /**
230  * Bind to a file descriptor and poll for a connection.
231  *
232  * @param fd First argument of bind().
233  * @param addr Second argument of bind().
234  * @param addrlen Third argument of bind().
235  * @param timeout Polling timeout in milliseconds.
236  * @param h URLContext providing interrupt check
237  * callback and logging context.
238  * @return A non-blocking file descriptor on success
239  * or an AVERROR on failure.
240  */
241 int ff_listen_bind(int fd, const struct sockaddr *addr,
242  socklen_t addrlen, int timeout,
243  URLContext *h);
244 
245 /**
246  * Connect to a file descriptor and poll for result.
247  *
248  * @param fd First argument of connect(),
249  * will be set as non-blocking.
250  * @param addr Second argument of connect().
251  * @param addrlen Third argument of connect().
252  * @param timeout Polling timeout in milliseconds.
253  * @param h URLContext providing interrupt check
254  * callback and logging context.
255  * @param will_try_next Whether the caller will try to connect to another
256  * address for the same host name, affecting the form of
257  * logged errors.
258  * @return 0 on success, AVERROR on failure.
259  */
260 int ff_listen_connect(int fd, const struct sockaddr *addr,
261  socklen_t addrlen, int timeout,
262  URLContext *h, int will_try_next);
263 
264 int ff_http_match_no_proxy(const char *no_proxy, const char *hostname);
265 
266 int ff_socket(int domain, int type, int protocol);
267 
268 #endif /* AVFORMAT_NETWORK_H */
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