mirrors/vlc
0
0
Fork 0
mirror of https://github.com/videolan/vlc.git synced 2025-01-25 09:06:20 +08:00
Code Issues Packages Projects Releases Wiki Activity
93c16a0b4e
vlc/include/vlc_network.h
Rémi Denis-Courmont 93c16a0b4e Simplify shutdown() portability
2007-02-26 16:54:05 +00:00

377 lines
11 KiB
C
Raw Blame History

/*****************************************************************************
* vlc_network.h: interface to communicate with network plug-ins
*****************************************************************************
* Copyright (C) 2002-2005 the VideoLAN team
* Copyright © 2006-2007 Rémi Denis-Courmont
* $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Laurent Aimar <fenrir@via.ecp.fr>
* Rémi Denis-Courmont <rem # videolan.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#if !defined( __LIBVLC__ )
#error You are not libvlc or one of its plugins. You cannot include this file
#endif
#ifndef __VLC_NETWORK_H
# define __VLC_NETWORK_H
#if defined( WIN32 )
# if defined(UNDER_CE) && defined(sockaddr_storage)
# undef sockaddr_storage
# endif
# if defined(UNDER_CE)
# define HAVE_STRUCT_ADDRINFO
# else
# define _NO_OLDNAMES 1
# include <io.h>
# endif
# include <winsock2.h>
# include <ws2tcpip.h>
# define ENETUNREACH WSAENETUNREACH
# define net_errno (WSAGetLastError())
extern const char *net_strerror( int val );
#else
# if HAVE_SYS_SOCKET_H
# include <sys/socket.h>
# endif
# if HAVE_NETINET_IN_H
# include <netinet/in.h>
# endif
# if HAVE_ARPA_INET_H
# include <arpa/inet.h>
# elif defined( SYS_BEOS )
# include <net/netdb.h>
# endif
# include <netdb.h>
# define net_errno errno
# define net_strerror strerror
#endif
# ifdef __cplusplus
extern "C" {
# endif
/* Portable networking layer communication */
int net_Socket (vlc_object_t *obj, int family, int socktype, int proto);
int net_SetupSocket (int fd);
#define net_Connect(a, b, c, d, e) __net_Connect(VLC_OBJECT(a), b, c, d, e)
VLC_EXPORT( int, __net_Connect, (vlc_object_t *p_this, const char *psz_host, int i_port, int socktype, int protocol) );
VLC_EXPORT( int *, net_Listen, (vlc_object_t *p_this, const char *psz_host, int i_port, int family, int socktype, int protocol) );
VLC_EXPORT( int, net_ListenSingle, (vlc_object_t *p_this, const char *psz_host, int i_port, int family, int socktype, int protocol) );
#define net_ListenTCP(a, b, c) __net_ListenTCP(VLC_OBJECT(a), b, c)
#define net_ConnectTCP(a, b, c) __net_ConnectTCP(VLC_OBJECT(a), b, c)
static inline int *__net_ListenTCP (vlc_object_t *obj, const char *host, int port)
{
return net_Listen (obj, host, port, AF_UNSPEC, SOCK_STREAM, IPPROTO_TCP);
}
static inline int __net_ConnectTCP (vlc_object_t *obj, const char *host, int port)
{
return __net_Connect (obj, host, port, SOCK_STREAM, IPPROTO_TCP);
}
#define net_Accept(a, b, c) __net_Accept(VLC_OBJECT(a), b, c)
VLC_EXPORT( int, __net_Accept, ( vlc_object_t *, int *, mtime_t ) );
#define net_ConnectDgram(a, b, c, d, e ) __net_ConnectDgram(VLC_OBJECT(a), b, c, d, e)
VLC_EXPORT( int, __net_ConnectDgram, ( vlc_object_t *p_this, const char *psz_host, int i_port, int hlim, int proto ) );
static inline int net_ConnectUDP (vlc_object_t *obj, const char *host, int port, int hlim)
{
return net_ConnectDgram (obj, host, port, hlim, IPPROTO_UDP);
}
static inline int net_ListenUDP1 (vlc_object_t *obj, const char *host, int port)
{
return net_ListenSingle (obj, host, port, AF_UNSPEC, SOCK_DGRAM, 0);
}
#define net_OpenDgram( a, b, c, d, e, g, h ) __net_OpenDgram(VLC_OBJECT(a), b, c, d, e, g, h)
VLC_EXPORT( int, __net_OpenDgram, ( vlc_object_t *p_this, const char *psz_bind, int i_bind, const char *psz_server, int i_server, int family, int proto ) );
VLC_EXPORT( void, net_Close, ( int fd ) );
VLC_EXPORT( void, net_ListenClose, ( int *fd ) );
VLC_EXPORT( int, net_SetDSCP, ( int fd, uint8_t dscp ) );
int net_Subscribe (vlc_object_t *obj, int fd, const struct sockaddr *addr,
socklen_t addrlen);
/* Functions to read from or write to the networking layer */
struct virtual_socket_t
{
void *p_sys;
int (*pf_recv) ( void *, void *, int );
int (*pf_send) ( void *, const void *, int );
};
#define net_Read(a,b,c,d,e,f) __net_Read(VLC_OBJECT(a),b,c,d,e,f)
VLC_EXPORT( ssize_t, __net_Read, ( vlc_object_t *p_this, int fd, const v_socket_t *, uint8_t *p_data, size_t i_data, vlc_bool_t b_retry ) );
#define net_Select(a,b,c,d,e) __net_Select(VLC_OBJECT(a),b,c,d,e)
VLC_EXPORT( ssize_t, __net_Select, ( vlc_object_t *p_this, const int *pi_fd, int i_fd, uint8_t *p_data, size_t i_data ) );
#define net_Write(a,b,c,d,e) __net_Write(VLC_OBJECT(a),b,c,d,e)
VLC_EXPORT( ssize_t, __net_Write, ( vlc_object_t *p_this, int fd, const v_socket_t *, const uint8_t *p_data, size_t i_data ) );
#define net_Gets(a,b,c) __net_Gets(VLC_OBJECT(a),b,c)
VLC_EXPORT( char *, __net_Gets, ( vlc_object_t *p_this, int fd, const v_socket_t * ) );
VLC_EXPORT( ssize_t, net_Printf, ( vlc_object_t *p_this, int fd, const v_socket_t *, const char *psz_fmt, ... ) );
#define net_vaPrintf(a,b,c,d,e) __net_vaPrintf(VLC_OBJECT(a),b,c,d,e)
VLC_EXPORT( ssize_t, __net_vaPrintf, ( vlc_object_t *p_this, int fd, const v_socket_t *, const char *psz_fmt, va_list args ) );
#ifndef HAVE_INET_PTON
/* only in core, so no need for C++ extern "C" */
VLC_EXPORT (int, inet_pton, (int af, const char *src, void *dst) );
#endif
#ifndef HAVE_INET_NTOP
#ifdef WIN32
/* only in core, so no need for C++ extern "C" */
VLC_EXPORT (const char *, inet_ntop, (int af, const void *src,
char *dst, socklen_t cnt) );
#endif
#endif
#ifndef HAVE_POLL
enum
{
POLLIN=1,
POLLOUT=2,
POLLPRI=4,
POLLERR=8, // unsupported stub
POLLHUP=16, // unsupported stub
POLLNVAL=32 // unsupported stub
};
struct pollfd
{
int fd;
int events;
int revents;
};
int poll (struct pollfd *fds, unsigned nfds, int timeout);
#endif
#ifdef WIN32
/* Microsoft: same semantic, same value, different name... go figure */
# define SHUT_RD SD_RECEIVE
# define SHUT_WR SD_SEND
# define SHUT_BOTH
# define net_Close( fd ) closesocket ((SOCKET)fd)
#else
# define net_Close( fd ) close (fd)
#endif
/* Portable network names/addresses resolution layer */
/* GAI error codes */
# ifndef EAI_BADFLAGS
# define EAI_BADFLAGS -1
# endif
# ifndef EAI_NONAME
# define EAI_NONAME -2
# endif
# ifndef EAI_AGAIN
# define EAI_AGAIN -3
# endif
# ifndef EAI_FAIL
# define EAI_FAIL -4
# endif
# ifndef EAI_NODATA
# define EAI_NODATA -5
# endif
# ifndef EAI_FAMILY
# define EAI_FAMILY -6
# endif
# ifndef EAI_SOCKTYPE
# define EAI_SOCKTYPE -7
# endif
# ifndef EAI_SERVICE
# define EAI_SERVICE -8
# endif
# ifndef EAI_ADDRFAMILY
# define EAI_ADDRFAMILY -9
# endif
# ifndef EAI_MEMORY
# define EAI_MEMORY -10
# endif
# ifndef EAI_SYSTEM
# define EAI_SYSTEM -11
# endif
# ifndef NI_MAXHOST
# define NI_MAXHOST 1025
# define NI_MAXSERV 32
# endif
# define NI_MAXNUMERICHOST 64
# ifndef NI_NUMERICHOST
# define NI_NUMERICHOST 0x01
# define NI_NUMERICSERV 0x02
# define NI_NOFQDN 0x04
# define NI_NAMEREQD 0x08
# define NI_DGRAM 0x10
# endif
# ifndef HAVE_STRUCT_ADDRINFO
struct addrinfo
{
int ai_flags;
int ai_family;
int ai_socktype;
int ai_protocol;
size_t ai_addrlen;
struct sockaddr *ai_addr;
char *ai_canonname;
struct addrinfo *ai_next;
};
# define AI_PASSIVE 1
# define AI_CANONNAME 2
# define AI_NUMERICHOST 4
# endif /* if !HAVE_STRUCT_ADDRINFO */
VLC_EXPORT( const char *, vlc_gai_strerror, ( int ) );
VLC_EXPORT( int, vlc_getnameinfo, ( const struct sockaddr *, int, char *, int, int *, int ) );
VLC_EXPORT( int, vlc_getaddrinfo, ( vlc_object_t *, const char *, int, const struct addrinfo *, struct addrinfo ** ) );
VLC_EXPORT( void, vlc_freeaddrinfo, ( struct addrinfo * ) );
static inline vlc_bool_t
net_SockAddrIsMulticast (const struct sockaddr *addr, socklen_t len)
{
switch (addr->sa_family)
{
#ifdef IN_MULTICAST
case AF_INET:
{
struct sockaddr_in *v4 = (struct sockaddr_in *)addr;
if ((size_t)len < sizeof (*v4))
return VLC_FALSE;
return IN_MULTICAST (ntohl (v4->sin_addr.s_addr)) != 0;
}
#endif
#ifdef IN6_IS_ADDR_MULTICAST
case AF_INET6:
{
struct sockaddr_in6 *v6 = (struct sockaddr_in6 *)addr;
if ((size_t)len < sizeof (*v6))
return VLC_FALSE;
return IN6_IS_ADDR_MULTICAST (&v6->sin6_addr) != 0;
}
#endif
}
return VLC_FALSE;
}
/**
* net_AddressIsMulticast
* @return VLC_FALSE iff the psz_addr does not specify a multicast address,
* or the address is not a valid address.
*/
static inline vlc_bool_t net_AddressIsMulticast( vlc_object_t *p_object, const char *psz_addr )
{
struct addrinfo hints, *res;
memset (&hints, 0, sizeof (hints));
hints.ai_socktype = SOCK_DGRAM; /* UDP */
hints.ai_flags = AI_NUMERICHOST;
int i = vlc_getaddrinfo (p_object, psz_addr, 0,
&hints, &res);
if (i)
{
msg_Err (p_object, "invalid address \"%s\" for net_AddressIsMulticast (%s)",
psz_addr, vlc_gai_strerror (i));
return VLC_FALSE;
}
vlc_bool_t b = net_SockAddrIsMulticast (res->ai_addr, res->ai_addrlen);
vlc_freeaddrinfo (res);
return b;
}
static inline int net_GetSockAddress( int fd, char *address, int *port )
{
struct sockaddr_storage addr;
socklen_t addrlen = sizeof( addr );
return getsockname( fd, (struct sockaddr *)&addr, &addrlen )
|| vlc_getnameinfo( (struct sockaddr *)&addr, addrlen, address,
NI_MAXNUMERICHOST, port, NI_NUMERICHOST )
? VLC_EGENERIC : 0;
}
static inline int net_GetPeerAddress( int fd, char *address, int *port )
{
struct sockaddr_storage addr;
socklen_t addrlen = sizeof( addr );
return getpeername( fd, (struct sockaddr *)&addr, &addrlen )
|| vlc_getnameinfo( (struct sockaddr *)&addr, addrlen, address,
NI_MAXNUMERICHOST, port, NI_NUMERICHOST )
? VLC_EGENERIC : 0;
}
static inline uint16_t net_GetPort (const struct sockaddr *addr)
{
switch (addr->sa_family)
{
#ifdef AF_INET6
case AF_INET6:
return ((const struct sockaddr_in6 *)addr)->sin6_port;
#endif
case AF_INET:
return ((const struct sockaddr_in *)addr)->sin_port;
}
return 0;
}
static inline void net_SetPort (struct sockaddr *addr, uint16_t port)
{
switch (addr->sa_family)
{
#ifdef AF_INET6
case AF_INET6:
((struct sockaddr_in6 *)addr)->sin6_port = port;
break;
#endif
case AF_INET:
((struct sockaddr_in *)addr)->sin_port = port;
break;
}
}
# ifdef __cplusplus
}
# endif
#endif
Reference in New Issue View Git Blame Copy Permalink