341 lines
9.8 KiB
C
341 lines
9.8 KiB
C
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/*
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* Copyright (c) 2007 The FFmpeg Project
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFORMAT_NETWORK_H
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#define AVFORMAT_NETWORK_H
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#include <errno.h>
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/error.h"
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#include "os_support.h"
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#include "avio.h"
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#include "url.h"
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if HAVE_WINSOCK2_H
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#ifndef EPROTONOSUPPORT
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#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
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#endif
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#ifndef ETIMEDOUT
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#define ETIMEDOUT WSAETIMEDOUT
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#endif
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#ifndef ECONNREFUSED
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#define ECONNREFUSED WSAECONNREFUSED
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#endif
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#ifndef EINPROGRESS
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#define EINPROGRESS WSAEINPROGRESS
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#endif
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#ifndef ENOTCONN
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#define ENOTCONN WSAENOTCONN
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#endif
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#define getsockopt(a, b, c, d, e) getsockopt(a, b, c, (char*) d, e)
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#define setsockopt(a, b, c, d, e) setsockopt(a, b, c, (const char*) d, e)
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int ff_neterrno(void);
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#else
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <netdb.h>
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#define ff_neterrno() AVERROR(errno)
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#endif /* HAVE_WINSOCK2_H */
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#if HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#if HAVE_POLL_H
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#include <poll.h>
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#endif
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int ff_socket_nonblock(int socket, int enable);
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int ff_network_init(void);
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void ff_network_close(void);
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int ff_tls_init(void);
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void ff_tls_deinit(void);
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int ff_network_wait_fd(int fd, int write);
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/**
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* This works similarly to ff_network_wait_fd, but waits up to 'timeout' microseconds
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* Uses ff_network_wait_fd in a loop
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*
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* @param fd Socket descriptor
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* @param write Set 1 to wait for socket able to be read, 0 to be written
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* @param timeout Timeout interval, in microseconds. Actual precision is 100000 mcs, due to ff_network_wait_fd usage
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* @param int_cb Interrupt callback, is checked before each ff_network_wait_fd call
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* @return 0 if data can be read/written, AVERROR(ETIMEDOUT) if timeout expired, or negative error code
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*/
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int ff_network_wait_fd_timeout(int fd, int write, int64_t timeout, AVIOInterruptCB *int_cb);
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/**
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* Waits for up to 'timeout' microseconds. If the usert's int_cb is set and
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* triggered, return before that.
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* @param timeout Timeout in microseconds. Maybe have lower actual precision.
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* @param int_cb Interrupt callback, is checked regularly.
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* @return AVERROR(ETIMEDOUT) if timeout expirted, AVERROR_EXIT if interrupted by int_cb
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*/
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int ff_network_sleep_interruptible(int64_t timeout, AVIOInterruptCB *int_cb);
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#if !HAVE_STRUCT_SOCKADDR_STORAGE
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struct sockaddr_storage {
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#if HAVE_STRUCT_SOCKADDR_SA_LEN
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uint8_t ss_len;
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uint8_t ss_family;
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#else
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uint16_t ss_family;
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#endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */
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char ss_pad1[6];
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int64_t ss_align;
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char ss_pad2[112];
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};
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#endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */
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typedef union sockaddr_union {
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struct sockaddr_storage storage;
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struct sockaddr_in in;
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#if HAVE_STRUCT_SOCKADDR_IN6
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struct sockaddr_in6 in6;
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#endif
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} sockaddr_union;
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#ifndef MSG_NOSIGNAL
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#define MSG_NOSIGNAL 0
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#endif
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#if !HAVE_STRUCT_ADDRINFO
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struct addrinfo {
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int ai_flags;
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int ai_family;
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int ai_socktype;
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int ai_protocol;
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int ai_addrlen;
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struct sockaddr *ai_addr;
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char *ai_canonname;
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struct addrinfo *ai_next;
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};
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#endif /* !HAVE_STRUCT_ADDRINFO */
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/* getaddrinfo constants */
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#ifndef EAI_AGAIN
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#define EAI_AGAIN 2
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#endif
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#ifndef EAI_BADFLAGS
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#define EAI_BADFLAGS 3
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#endif
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#ifndef EAI_FAIL
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#define EAI_FAIL 4
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#endif
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#ifndef EAI_FAMILY
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#define EAI_FAMILY 5
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#endif
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#ifndef EAI_MEMORY
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#define EAI_MEMORY 6
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#endif
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#ifndef EAI_NODATA
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#define EAI_NODATA 7
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#endif
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#ifndef EAI_NONAME
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#define EAI_NONAME 8
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#endif
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#ifndef EAI_SERVICE
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#define EAI_SERVICE 9
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#endif
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#ifndef EAI_SOCKTYPE
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#define EAI_SOCKTYPE 10
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#endif
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#ifndef AI_PASSIVE
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#define AI_PASSIVE 1
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#endif
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#ifndef AI_CANONNAME
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#define AI_CANONNAME 2
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#endif
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#ifndef AI_NUMERICHOST
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#define AI_NUMERICHOST 4
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#endif
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#ifndef NI_NOFQDN
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#define NI_NOFQDN 1
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#endif
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#ifndef NI_NUMERICHOST
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#define NI_NUMERICHOST 2
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#endif
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#ifndef NI_NAMERQD
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#define NI_NAMERQD 4
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#endif
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#ifndef NI_NUMERICSERV
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#define NI_NUMERICSERV 8
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#endif
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#ifndef NI_DGRAM
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#define NI_DGRAM 16
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#endif
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#if !HAVE_GETADDRINFO
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int ff_getaddrinfo(const char *node, const char *service,
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const struct addrinfo *hints, struct addrinfo **res);
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void ff_freeaddrinfo(struct addrinfo *res);
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int ff_getnameinfo(const struct sockaddr *sa, int salen,
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char *host, int hostlen,
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char *serv, int servlen, int flags);
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#define getaddrinfo ff_getaddrinfo
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#define freeaddrinfo ff_freeaddrinfo
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#define getnameinfo ff_getnameinfo
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#endif /* !HAVE_GETADDRINFO */
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#if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H
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const char *ff_gai_strerror(int ecode);
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#undef gai_strerror
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#define gai_strerror ff_gai_strerror
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#endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */
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#ifndef INADDR_LOOPBACK
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#define INADDR_LOOPBACK 0x7f000001
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#endif
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#ifndef INET_ADDRSTRLEN
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#define INET_ADDRSTRLEN 16
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#endif
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#ifndef INET6_ADDRSTRLEN
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#define INET6_ADDRSTRLEN INET_ADDRSTRLEN
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#endif
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#ifndef IN_MULTICAST
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#define IN_MULTICAST(a) ((((uint32_t)(a)) & 0xf0000000) == 0xe0000000)
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#endif
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#ifndef IN6_IS_ADDR_MULTICAST
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#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
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#endif
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int ff_is_multicast_address(struct sockaddr *addr);
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#define POLLING_TIME 100 /// Time in milliseconds between interrupt check
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/**
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* Bind to a file descriptor and poll for a connection.
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*
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* @param fd First argument of bind().
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* @param addr Second argument of bind().
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* @param addrlen Third argument of bind().
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* @param timeout Polling timeout in milliseconds.
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* @param h URLContext providing interrupt check
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* callback and logging context.
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* @return A non-blocking file descriptor on success
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* or an AVERROR on failure.
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*/
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int ff_listen_bind(int fd, const struct sockaddr *addr,
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socklen_t addrlen, int timeout,
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URLContext *h);
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/**
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* Bind to a file descriptor to an address without accepting connections.
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* @param fd First argument of bind().
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* @param addr Second argument of bind().
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* @param addrlen Third argument of bind().
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* @return 0 on success or an AVERROR on failure.
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*/
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int ff_listen(int fd, const struct sockaddr *addr, socklen_t addrlen);
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/**
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* Poll for a single connection on the passed file descriptor.
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* @param fd The listening socket file descriptor.
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* @param timeout Polling timeout in milliseconds.
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* @param h URLContext providing interrupt check
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* callback and logging context.
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* @return A non-blocking file descriptor on success
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* or an AVERROR on failure.
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*/
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int ff_accept(int fd, int timeout, URLContext *h);
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/**
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* Connect to a file descriptor and poll for result.
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*
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* @param fd First argument of connect(),
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* will be set as non-blocking.
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* @param addr Second argument of connect().
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* @param addrlen Third argument of connect().
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* @param timeout Polling timeout in milliseconds.
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* @param h URLContext providing interrupt check
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* callback and logging context.
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* @param will_try_next Whether the caller will try to connect to another
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* address for the same host name, affecting the form of
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* logged errors.
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* @return 0 on success, AVERROR on failure.
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*/
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int ff_listen_connect(int fd, const struct sockaddr *addr,
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socklen_t addrlen, int timeout,
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URLContext *h, int will_try_next);
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int ff_http_match_no_proxy(const char *no_proxy, const char *hostname);
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int ff_socket(int domain, int type, int protocol);
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void ff_log_net_error(void *ctx, int level, const char* prefix);
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/**
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* Connect to any of the given addrinfo addresses, with multiple attempts
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* running in parallel.
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*
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* @param addrs The list of addresses to try to connect to.
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* This list will be mutated internally, but the list head
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* will remain as such, so this doesn't affect the caller
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* freeing the list afterwards.
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* @param timeout_ms_per_address The number of milliseconds to wait for each
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* connection attempt. Since multiple addresses are tried,
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* some of them in parallel, the total run time will at most
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* be timeout_ms_per_address*ceil(nb_addrs/parallel) +
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* (parallel - 1) * NEXT_ATTEMPT_DELAY_MS.
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* @param parallel The maximum number of connections to attempt in parallel.
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* This is limited to an internal maximum capacity.
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* @param h URLContext providing interrupt check
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* callback and logging context.
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* @param fd If successful, the connected socket is returned here.
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* @param customize_fd Function that will be called for each socket created,
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* to allow the caller to set socket options before calling
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* connect() on it, may be NULL.
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* @param customize_ctx Context parameter passed to customize_fd.
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* @return 0 on success, AVERROR on failure.
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*/
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int ff_connect_parallel(struct addrinfo *addrs, int timeout_ms_per_address,
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int parallel, URLContext *h, int *fd,
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void (*customize_fd)(void *, int), void *customize_ctx);
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#endif /* AVFORMAT_NETWORK_H */
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