彻底改版2.0
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feiyangqingyun
370
video/playvlc/vlc/vlc2/include/plugins/vlc_network.h
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370
video/playvlc/vlc/vlc2/include/plugins/vlc_network.h
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/*****************************************************************************
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* vlc_network.h: interface to communicate with network plug-ins
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*****************************************************************************
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* Copyright (C) 2002-2005 VLC authors and VideoLAN
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* Copyright © 2006-2007 Rémi Denis-Courmont
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* $Id: 70281a229d0acf031b71e0d22ac0a08be0712c68 $
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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* Laurent Aimar <fenrir@via.ecp.fr>
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* Rémi Denis-Courmont <rem # videolan.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU 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 License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef VLC_NETWORK_H
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# define VLC_NETWORK_H
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/**
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* \file
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* This file defines interface to communicate with network plug-ins
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*/
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#if defined( _WIN32 )
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# define _NO_OLDNAMES 1
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# include <io.h>
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# include <winsock2.h>
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# include <ws2tcpip.h>
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# define net_errno (WSAGetLastError())
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struct iovec
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{
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void *iov_base;
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size_t iov_len;
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};
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struct msghdr
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{
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void *msg_name;
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size_t msg_namelen;
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struct iovec *msg_iov;
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size_t msg_iovlen;
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void *msg_control;
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size_t msg_controllen;
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int msg_flags;
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};
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# ifndef IPV6_V6ONLY
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# define IPV6_V6ONLY 27
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# endif
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#else
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# include <sys/types.h>
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# include <unistd.h>
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# include <sys/socket.h>
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# include <netinet/in.h>
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# include <netdb.h>
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# define net_errno errno
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#endif
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#if defined( __SYMBIAN32__ )
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# undef AF_INET6
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# undef IN6_IS_ADDR_MULTICAST
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# undef IPV6_V6ONLY
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# undef IPV6_MULTICAST_HOPS
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# undef IPV6_MULTICAST_IF
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# undef IPV6_TCLASS
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# undef IPV6_JOIN_GROUP
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#endif
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VLC_API int vlc_socket (int, int, int, bool nonblock) VLC_USED;
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struct sockaddr;
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VLC_API int vlc_accept( int, struct sockaddr *, socklen_t *, bool ) VLC_USED;
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# ifdef __cplusplus
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extern "C" {
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# endif
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/* Portable networking layer communication */
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int net_Socket (vlc_object_t *obj, int family, int socktype, int proto);
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VLC_API int net_Connect(vlc_object_t *p_this, const char *psz_host, int i_port, int socktype, int protocol);
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#define net_Connect(a, b, c, d, e) net_Connect(VLC_OBJECT(a), b, c, d, e)
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VLC_API int * net_Listen(vlc_object_t *p_this, const char *psz_host, int i_port, int socktype, int protocol);
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#define net_ListenTCP(a, b, c) net_Listen(VLC_OBJECT(a), b, c, \
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SOCK_STREAM, IPPROTO_TCP)
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static inline int net_ConnectTCP (vlc_object_t *obj, const char *host, int port)
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{
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return net_Connect (obj, host, port, SOCK_STREAM, IPPROTO_TCP);
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}
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#define net_ConnectTCP(a, b, c) net_ConnectTCP(VLC_OBJECT(a), b, c)
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VLC_API int net_AcceptSingle(vlc_object_t *obj, int lfd);
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VLC_API int net_Accept( vlc_object_t *, int * );
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#define net_Accept(a, b) \
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net_Accept(VLC_OBJECT(a), b)
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VLC_API int net_ConnectDgram( vlc_object_t *p_this, const char *psz_host, int i_port, int hlim, int proto );
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#define net_ConnectDgram(a, b, c, d, e ) \
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net_ConnectDgram(VLC_OBJECT(a), b, c, d, e)
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static inline int net_ConnectUDP (vlc_object_t *obj, const char *host, int port, int hlim)
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{
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return net_ConnectDgram (obj, host, port, hlim, IPPROTO_UDP);
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}
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VLC_API int net_OpenDgram( vlc_object_t *p_this, const char *psz_bind, int i_bind, const char *psz_server, int i_server, int proto );
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#define net_OpenDgram( a, b, c, d, e, g ) \
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net_OpenDgram(VLC_OBJECT(a), b, c, d, e, g)
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static inline int net_ListenUDP1 (vlc_object_t *obj, const char *host, int port)
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{
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return net_OpenDgram (obj, host, port, NULL, 0, IPPROTO_UDP);
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}
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VLC_API void net_ListenClose( int *fd );
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int net_Subscribe (vlc_object_t *obj, int fd, const struct sockaddr *addr,
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socklen_t addrlen);
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VLC_API int net_SetCSCov( int fd, int sendcov, int recvcov );
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/* Functions to read from or write to the networking layer */
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struct virtual_socket_t
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{
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void *p_sys;
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int (*pf_recv) ( void *, void *, size_t );
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int (*pf_send) ( void *, const void *, size_t );
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};
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VLC_API ssize_t net_Read( vlc_object_t *p_this, int fd, const v_socket_t *, void *p_data, size_t i_data, bool b_retry );
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#define net_Read(a,b,c,d,e,f) net_Read(VLC_OBJECT(a),b,c,d,e,f)
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VLC_API ssize_t net_Write( vlc_object_t *p_this, int fd, const v_socket_t *, const void *p_data, size_t i_data );
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#define net_Write(a,b,c,d,e) net_Write(VLC_OBJECT(a),b,c,d,e)
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VLC_API char * net_Gets( vlc_object_t *p_this, int fd, const v_socket_t * );
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#define net_Gets(a,b,c) net_Gets(VLC_OBJECT(a),b,c)
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VLC_API ssize_t net_Printf( vlc_object_t *p_this, int fd, const v_socket_t *, const char *psz_fmt, ... ) VLC_FORMAT( 4, 5 );
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#define net_Printf(o,fd,vs,...) net_Printf(VLC_OBJECT(o),fd,vs, __VA_ARGS__)
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VLC_API ssize_t net_vaPrintf( vlc_object_t *p_this, int fd, const v_socket_t *, const char *psz_fmt, va_list args );
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#define net_vaPrintf(a,b,c,d,e) net_vaPrintf(VLC_OBJECT(a),b,c,d,e)
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#ifdef _WIN32
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/* Microsoft: same semantic, same value, different name... go figure */
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# define SHUT_RD SD_RECEIVE
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# define SHUT_WR SD_SEND
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# define SHUT_RDWR SD_BOTH
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# define net_Close( fd ) closesocket ((SOCKET)fd)
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#else
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# ifdef __OS2__
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# define SHUT_RD 0
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# define SHUT_WR 1
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# define SHUT_RDWR 2
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# endif
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# define net_Close( fd ) (void)close (fd)
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#endif
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/* Portable network names/addresses resolution layer */
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/* GAI error codes */
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# ifndef EAI_BADFLAGS
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# define EAI_BADFLAGS -1
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# endif
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# ifndef EAI_NONAME
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# define EAI_NONAME -2
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# endif
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# ifndef EAI_AGAIN
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# define EAI_AGAIN -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_NODATA
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# define EAI_NODATA -5
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# endif
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# ifndef EAI_FAMILY
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# define EAI_FAMILY -6
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# endif
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# ifndef EAI_SOCKTYPE
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# define EAI_SOCKTYPE -7
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# endif
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# ifndef EAI_SERVICE
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# define EAI_SERVICE -8
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# endif
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# ifndef EAI_ADDRFAMILY
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# define EAI_ADDRFAMILY -9
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# endif
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# ifndef EAI_MEMORY
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# define EAI_MEMORY -10
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# endif
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#ifndef EAI_OVERFLOW
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# define EAI_OVERFLOW -11
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#endif
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# ifndef EAI_SYSTEM
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# define EAI_SYSTEM -12
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# endif
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# ifndef NI_MAXHOST
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# define NI_MAXHOST 1025
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# define NI_MAXSERV 32
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# endif
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# define NI_MAXNUMERICHOST 64
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#ifndef AI_NUMERICSERV
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# define AI_NUMERICSERV 0
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#endif
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#ifndef AI_IDN
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# define AI_IDN 0 /* GNU/libc extension */
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#endif
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#ifdef _WIN32
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# undef gai_strerror
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# define gai_strerror gai_strerrorA
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#endif
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#ifdef __OS2__
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# ifndef NI_NUMERICHOST
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# define NI_NUMERICHOST 0x01
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# define NI_NUMERICSERV 0x02
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# define NI_NOFQDN 0x04
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# define NI_NAMEREQD 0x08
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# define NI_DGRAM 0x10
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# endif
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# define AI_PASSIVE 1
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# define AI_CANONNAME 2
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# define AI_NUMERICHOST 4
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VLC_API const char *gai_strerror( int errnum );
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VLC_API int getaddrinfo ( const char *, const char *,
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const struct addrinfo *, struct addrinfo ** );
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VLC_API void freeaddrinfo( struct addrinfo * );
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VLC_API int getnameinfo ( const struct sockaddr *, socklen_t,
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char *, int, char *, int, int );
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#endif
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VLC_API int vlc_getnameinfo( const struct sockaddr *, int, char *, int, int *, int );
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VLC_API int vlc_getaddrinfo (const char *, unsigned,
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const struct addrinfo *, struct addrinfo **);
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#ifdef __OS2__
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/* OS/2 does not support IPv6, yet. But declare these only for compilation */
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struct in6_addr
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{
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uint8_t s6_addr[16];
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};
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struct sockaddr_in6
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{
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uint8_t sin6_len;
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uint8_t sin6_family;
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uint16_t sin6_port;
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uint32_t sin6_flowinfo;
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struct in6_addr sin6_addr;
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uint32_t sin6_scope_id;
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};
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# define IN6_IS_ADDR_MULTICAST(a) (((__const uint8_t *) (a))[0] == 0xff)
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static const struct in6_addr in6addr_any =
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{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } };
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#endif
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static inline bool
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net_SockAddrIsMulticast (const struct sockaddr *addr, socklen_t len)
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{
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switch (addr->sa_family)
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{
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#ifdef IN_MULTICAST
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case AF_INET:
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{
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const struct sockaddr_in *v4 = (const struct sockaddr_in *)addr;
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if ((size_t)len < sizeof (*v4))
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return false;
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return IN_MULTICAST (ntohl (v4->sin_addr.s_addr)) != 0;
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}
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#endif
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#ifdef IN6_IS_ADDR_MULTICAST
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case AF_INET6:
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{
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const struct sockaddr_in6 *v6 = (const struct sockaddr_in6 *)addr;
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if ((size_t)len < sizeof (*v6))
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return false;
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return IN6_IS_ADDR_MULTICAST (&v6->sin6_addr) != 0;
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}
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#endif
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}
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return false;
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}
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static inline int net_GetSockAddress( int fd, char *address, int *port )
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{
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struct sockaddr_storage addr;
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socklen_t addrlen = sizeof( addr );
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return getsockname( fd, (struct sockaddr *)&addr, &addrlen )
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|| vlc_getnameinfo( (struct sockaddr *)&addr, addrlen, address,
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NI_MAXNUMERICHOST, port, NI_NUMERICHOST )
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? VLC_EGENERIC : 0;
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}
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static inline int net_GetPeerAddress( int fd, char *address, int *port )
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{
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struct sockaddr_storage addr;
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socklen_t addrlen = sizeof( addr );
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return getpeername( fd, (struct sockaddr *)&addr, &addrlen )
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|| vlc_getnameinfo( (struct sockaddr *)&addr, addrlen, address,
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NI_MAXNUMERICHOST, port, NI_NUMERICHOST )
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? VLC_EGENERIC : 0;
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}
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static inline uint16_t net_GetPort (const struct sockaddr *addr)
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{
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switch (addr->sa_family)
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{
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#ifdef AF_INET6
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case AF_INET6:
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return ((const struct sockaddr_in6 *)addr)->sin6_port;
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#endif
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case AF_INET:
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return ((const struct sockaddr_in *)addr)->sin_port;
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}
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return 0;
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}
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static inline void net_SetPort (struct sockaddr *addr, uint16_t port)
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{
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switch (addr->sa_family)
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{
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#ifdef AF_INET6
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case AF_INET6:
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((struct sockaddr_in6 *)addr)->sin6_port = port;
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break;
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#endif
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case AF_INET:
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((struct sockaddr_in *)addr)->sin_port = port;
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break;
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}
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}
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VLC_API char *vlc_getProxyUrl(const char *);
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# ifdef __cplusplus
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}
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# endif
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#endif
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