ffmpeg/libavformat/network.h

   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 typedef union sockaddr_union {
 115     struct sockaddr_storage storage;
 116     struct sockaddr_in in;
 117 #if HAVE_STRUCT_SOCKADDR_IN6
 118     struct sockaddr_in6 in6;
 119 #endif
 120 } sockaddr_union;
 121
 122 #ifndef MSG_NOSIGNAL
 123 #define MSG_NOSIGNAL 0
 124 #endif
 125
 126 #if !HAVE_STRUCT_ADDRINFO
 127 struct addrinfo {
 128     int ai_flags;
 129     int ai_family;
 130     int ai_socktype;
 131     int ai_protocol;
 132     int ai_addrlen;
 133     struct sockaddr *ai_addr;
 134     char *ai_canonname;
 135     struct addrinfo *ai_next;
 136 };
 137 #endif /* !HAVE_STRUCT_ADDRINFO */
 138
 139 /* getaddrinfo constants */
 140 #ifndef EAI_AGAIN
 141 #define EAI_AGAIN 2
 142 #endif
 143 #ifndef EAI_BADFLAGS
 144 #define EAI_BADFLAGS 3
 145 #endif
 146 #ifndef EAI_FAIL
 147 #define EAI_FAIL 4
 148 #endif
 149 #ifndef EAI_FAMILY
 150 #define EAI_FAMILY 5
 151 #endif
 152 #ifndef EAI_MEMORY
 153 #define EAI_MEMORY 6
 154 #endif
 155 #ifndef EAI_NODATA
 156 #define EAI_NODATA 7
 157 #endif
 158 #ifndef EAI_NONAME
 159 #define EAI_NONAME 8
 160 #endif
 161 #ifndef EAI_SERVICE
 162 #define EAI_SERVICE 9
 163 #endif
 164 #ifndef EAI_SOCKTYPE
 165 #define EAI_SOCKTYPE 10
 166 #endif
 167
 168 #ifndef AI_PASSIVE
 169 #define AI_PASSIVE 1
 170 #endif
 171
 172 #ifndef AI_CANONNAME
 173 #define AI_CANONNAME 2
 174 #endif
 175
 176 #ifndef AI_NUMERICHOST
 177 #define AI_NUMERICHOST 4
 178 #endif
 179
 180 #ifndef NI_NOFQDN
 181 #define NI_NOFQDN 1
 182 #endif
 183
 184 #ifndef NI_NUMERICHOST
 185 #define NI_NUMERICHOST 2
 186 #endif
 187
 188 #ifndef NI_NAMERQD
 189 #define NI_NAMERQD 4
 190 #endif
 191
 192 #ifndef NI_NUMERICSERV
 193 #define NI_NUMERICSERV 8
 194 #endif
 195
 196 #ifndef NI_DGRAM
 197 #define NI_DGRAM 16
 198 #endif
 199
 200 #if !HAVE_GETADDRINFO
 201 int ff_getaddrinfo(const char *node, const char *service,
 202                    const struct addrinfo *hints, struct addrinfo **res);
 203 void ff_freeaddrinfo(struct addrinfo *res);
 204 int ff_getnameinfo(const struct sockaddr *sa, int salen,
 205                    char *host, int hostlen,
 206                    char *serv, int servlen, int flags);
 207 #define getaddrinfo ff_getaddrinfo
 208 #define freeaddrinfo ff_freeaddrinfo
 209 #define getnameinfo ff_getnameinfo
 210 #endif /* !HAVE_GETADDRINFO */
 211
 212 #if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H
 213 const char *ff_gai_strerror(int ecode);
 214 #undef gai_strerror
 215 #define gai_strerror ff_gai_strerror
 216 #endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */
 217
 218 #ifndef INADDR_LOOPBACK
 219 #define INADDR_LOOPBACK 0x7f000001
 220 #endif
 221
 222 #ifndef INET_ADDRSTRLEN
 223 #define INET_ADDRSTRLEN 16
 224 #endif
 225
 226 #ifndef INET6_ADDRSTRLEN
 227 #define INET6_ADDRSTRLEN INET_ADDRSTRLEN
 228 #endif
 229
 230 #ifndef IN_MULTICAST
 231 #define IN_MULTICAST(a) ((((uint32_t)(a)) & 0xf0000000) == 0xe0000000)
 232 #endif
 233 #ifndef IN6_IS_ADDR_MULTICAST
 234 #define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
 235 #endif
 236
 237 int ff_is_multicast_address(struct sockaddr *addr);
 238
 239 #define POLLING_TIME 100 /// Time in milliseconds between interrupt check
 240
 241 /**
 242  * Bind to a file descriptor and poll for a connection.
 243  *
 244  * @param fd      First argument of bind().
 245  * @param addr    Second argument of bind().
 246  * @param addrlen Third argument of bind().
 247  * @param timeout Polling timeout in milliseconds.
 248  * @param h       URLContext providing interrupt check
 249  *                callback and logging context.
 250  * @return        A non-blocking file descriptor on success
 251  *                or an AVERROR on failure.
 252  */
 253 int ff_listen_bind(int fd, const struct sockaddr *addr,
 254                    socklen_t addrlen, int timeout,
 255                    URLContext *h);
 256
 257 /**
 258  * Connect to a file descriptor and poll for result.
 259  *
 260  * @param fd       First argument of connect(),
 261  *                 will be set as non-blocking.
 262  * @param addr     Second argument of connect().
 263  * @param addrlen  Third argument of connect().
 264  * @param timeout  Polling timeout in milliseconds.
 265  * @param h        URLContext providing interrupt check
 266  *                 callback and logging context.
 267  * @param will_try_next Whether the caller will try to connect to another
 268  *                 address for the same host name, affecting the form of
 269  *                 logged errors.
 270  * @return         0 on success, AVERROR on failure.
 271  */
 272 int ff_listen_connect(int fd, const struct sockaddr *addr,
 273                       socklen_t addrlen, int timeout,
 274                       URLContext *h, int will_try_next);
 275
 276 int ff_http_match_no_proxy(const char *no_proxy, const char *hostname);
 277
 278 int ff_socket(int domain, int type, int protocol);
 279
 280 #endif /* AVFORMAT_NETWORK_H */