/*

  * Copyright (c) 2007 The FFmpeg Project

  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 

 #ifndef AVFORMAT_NETWORK_H
 #define AVFORMAT_NETWORK_H

 #include <errno.h>

 #include <stdint.h>

 #include "config.h"

 #include "libavutil/error.h"

 #include "os_support.h"

 #include "avio.h"

 #include "url.h"

 #if HAVE_UNISTD_H
 #include <unistd.h>
 #endif
 

 #if HAVE_WINSOCK2_H

 #include <winsock2.h>
 #include <ws2tcpip.h>
 

 #ifndef EPROTONOSUPPORT

 #define EPROTONOSUPPORT WSAEPROTONOSUPPORT

 #endif

 #ifndef ETIMEDOUT

 #define ETIMEDOUT       WSAETIMEDOUT

 #endif

 #ifndef ECONNREFUSED

 #define ECONNREFUSED    WSAECONNREFUSED

 #endif

 #ifndef EINPROGRESS

 #define EINPROGRESS     WSAEINPROGRESS

 #endif
 

 #define getsockopt(a, b, c, d, e) getsockopt(a, b, c, (char*) d, e)
 #define setsockopt(a, b, c, d, e) setsockopt(a, b, c, (const char*) d, e)

 int ff_neterrno(void);

 #else

 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netdb.h>
 

 #define ff_neterrno() AVERROR(errno)

 #endif
 

 #if HAVE_ARPA_INET_H

 #include <arpa/inet.h>
 #endif

 #if HAVE_POLL_H
 #include <poll.h>
 #endif
 

 int ff_socket_nonblock(int socket, int enable);
 

 extern int ff_network_inited_globally;

 int ff_network_init(void);
 void ff_network_close(void);
 

 void ff_tls_init(void);
 void ff_tls_deinit(void);
 

 int ff_network_wait_fd(int fd, int write);

 /**
  * This works similarly to ff_network_wait_fd, but waits up to 'timeout' microseconds
  * Uses ff_network_wait_fd in a loop
  *
  * @fd Socket descriptor
  * @write Set 1 to wait for socket able to be read, 0 to be written
  * @timeout Timeout interval, in microseconds. Actual precision is 100000 mcs, due to ff_network_wait_fd usage

  * @param int_cb Interrupt callback, is checked before each ff_network_wait_fd call

  * @return 0 if data can be read/written, AVERROR(ETIMEDOUT) if timeout expired, or negative error code
  */
 int ff_network_wait_fd_timeout(int fd, int write, int64_t timeout, AVIOInterruptCB *int_cb);
 

 int ff_inet_aton (const char * str, struct in_addr * add);

 #if !HAVE_STRUCT_SOCKADDR_STORAGE
 struct sockaddr_storage {

 #if HAVE_STRUCT_SOCKADDR_SA_LEN
     uint8_t ss_len;
     uint8_t ss_family;
 #else
     uint16_t ss_family;
 #endif
     char ss_pad1[6];
     int64_t ss_align;
     char ss_pad2[112];

 };
 #endif
 

 #if !HAVE_STRUCT_ADDRINFO
 struct addrinfo {
     int ai_flags;
     int ai_family;
     int ai_socktype;
     int ai_protocol;
     int ai_addrlen;
     struct sockaddr *ai_addr;
     char *ai_canonname;
     struct addrinfo *ai_next;
 };
 #endif
 
 /* getaddrinfo constants */

 #ifndef EAI_AGAIN
 #define EAI_AGAIN 2
 #endif
 #ifndef EAI_BADFLAGS
 #define EAI_BADFLAGS 3
 #endif

 #ifndef EAI_FAIL
 #define EAI_FAIL 4
 #endif

 #ifndef EAI_FAMILY
 #define EAI_FAMILY 5
 #endif

 #ifndef EAI_MEMORY
 #define EAI_MEMORY 6
 #endif
 #ifndef EAI_NODATA
 #define EAI_NODATA 7
 #endif

 #ifndef EAI_NONAME
 #define EAI_NONAME 8
 #endif

 #ifndef EAI_SERVICE
 #define EAI_SERVICE 9
 #endif
 #ifndef EAI_SOCKTYPE
 #define EAI_SOCKTYPE 10
 #endif

 #ifndef AI_PASSIVE
 #define AI_PASSIVE 1
 #endif
 
 #ifndef AI_CANONNAME
 #define AI_CANONNAME 2
 #endif
 
 #ifndef AI_NUMERICHOST
 #define AI_NUMERICHOST 4
 #endif
 

 #ifndef NI_NOFQDN
 #define NI_NOFQDN 1
 #endif
 
 #ifndef NI_NUMERICHOST
 #define NI_NUMERICHOST 2
 #endif
 
 #ifndef NI_NAMERQD
 #define NI_NAMERQD 4
 #endif
 
 #ifndef NI_NUMERICSERV
 #define NI_NUMERICSERV 8
 #endif
 
 #ifndef NI_DGRAM
 #define NI_DGRAM 16
 #endif
 

 #if !HAVE_GETADDRINFO
 int ff_getaddrinfo(const char *node, const char *service,
                    const struct addrinfo *hints, struct addrinfo **res);
 void ff_freeaddrinfo(struct addrinfo *res);

 int ff_getnameinfo(const struct sockaddr *sa, int salen,
                    char *host, int hostlen,
                    char *serv, int servlen, int flags);

 #define getaddrinfo ff_getaddrinfo
 #define freeaddrinfo ff_freeaddrinfo

 #define getnameinfo ff_getnameinfo

 #endif
 #if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H
 const char *ff_gai_strerror(int ecode);

 #undef gai_strerror

 #define gai_strerror ff_gai_strerror

 #endif
 

 #ifndef INADDR_LOOPBACK
 #define INADDR_LOOPBACK 0x7f000001
 #endif
 
 #ifndef INET_ADDRSTRLEN
 #define INET_ADDRSTRLEN 16
 #endif
 

 #ifndef INET6_ADDRSTRLEN
 #define INET6_ADDRSTRLEN INET_ADDRSTRLEN
 #endif
 

 #ifndef IN_MULTICAST
 #define IN_MULTICAST(a) ((((uint32_t)(a)) & 0xf0000000) == 0xe0000000)
 #endif
 #ifndef IN6_IS_ADDR_MULTICAST
 #define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
 #endif
 

 int ff_is_multicast_address(struct sockaddr *addr);

 #define POLLING_TIME 100 /// Time in milliseconds between interrupt check
 
 /**
  * Bind to a file descriptor and poll for a connection.
  *
  * @param fd      First argument of bind().
  * @param addr    Second argument of bind().
  * @param addrlen Third argument of bind().
  * @param timeout Polling timeout in milliseconds.
  * @param h       URLContext providing interrupt check
  *                callback and logging context.
  * @return        A non-blocking file descriptor on success
  *                or an AVERROR on failure.
  */

 int ff_listen_bind(int fd, const struct sockaddr *addr,

                    socklen_t addrlen, int timeout,
                    URLContext *h);
 
 /**
  * Connect to a file descriptor and poll for result.
  *
  * @param fd       First argument of connect(),
  *                 will be set as non-blocking.
  * @param addr     Second argument of connect().
  * @param addrlen  Third argument of connect().
  * @param timeout  Polling timeout in milliseconds.
  * @param h        URLContext providing interrupt check
  *                 callback and logging context.

  * @param will_try_next Whether the caller will try to connect to another
  *                 address for the same host name, affecting the form of
  *                 logged errors.

  * @return         0 on success, AVERROR on failure.
  */

 int ff_listen_connect(int fd, const struct sockaddr *addr,
                       socklen_t addrlen, int timeout,

                       URLContext *h, int will_try_next);

 int ff_http_match_no_proxy(const char *no_proxy, const char *hostname);
 

 int ff_socket(int domain, int type, int protocol);

 #endif /* AVFORMAT_NETWORK_H */