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vlc-2-2
Commit 8acc19a5 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont
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Sort out io.c

parent 3793ee13
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Showing with 885 additions and 785 deletions
Makefile.am
View file @ 8acc19a5
......@@ -435,10 +435,12 @@ SOURCES_libvlc_common = \
src/osd/osd_parser.c \
src/osd/osd_text.c \
src/osd/osd_widgets.c \
src/network/getaddrinfo.c \
src/network/io.c \
src/network/tcp.c \
src/network/udp.c \
src/network/httpd.c \
src/network/tls.c \
src/network/io.c \
src/network/getaddrinfo.c \
src/misc/charset.c \
src/misc/md5.c \
src/misc/mtime.c \
......
src/network/io.c
View file @ 8acc19a5
/*****************************************************************************
* net.c:
* io.c: network I/O functions
*****************************************************************************
* Copyright (C) 2004-2005 the VideoLAN team
* $Id$
......@@ -49,14 +49,7 @@
# define INADDR_NONE 0xFFFFFFFF
#endif
static int SocksNegociate( vlc_object_t *, int fd, int i_socks_version,
char *psz_socks_user, char *psz_socks_passwd );
static int SocksHandshakeTCP( vlc_object_t *,
int fd, int i_socks_version,
char *psz_socks_user, char *psz_socks_passwd,
const char *psz_host, int i_port );
static int net_Socket( vlc_object_t *p_this, int i_family, int i_socktype,
int net_Socket( vlc_object_t *p_this, int i_family, int i_socktype,
int i_protocol )
{
int fd, i_val;
......@@ -122,573 +115,6 @@ static int net_Socket( vlc_object_t *p_this, int i_family, int i_socktype,
return fd;
}
/*****************************************************************************
* __net_ConnectTCP:
*****************************************************************************
* Open a TCP connection and return a handle
*****************************************************************************/
int __net_ConnectTCP( vlc_object_t *p_this, const char *psz_host, int i_port )
{
struct addrinfo hints, *res, *ptr;
const char *psz_realhost;
char *psz_socks;
int i_realport, i_val, i_handle = -1;
vlc_bool_t b_unreach = VLC_FALSE;
if( i_port == 0 )
i_port = 80; /* historical VLC thing */
memset( &hints, 0, sizeof( hints ) );
hints.ai_socktype = SOCK_STREAM;
psz_socks = var_CreateGetString( p_this, "socks" );
if( *psz_socks && *psz_socks != ':' )
{
char *psz = strchr( psz_socks, ':' );
if( psz )
*psz++ = '\0';
psz_realhost = psz_socks;
i_realport = ( psz != NULL ) ? atoi( psz ) : 1080;
msg_Dbg( p_this, "net: connecting to %s port %d for %s port %d",
psz_realhost, i_realport, psz_host, i_port );
}
else
{
psz_realhost = psz_host;
i_realport = i_port;
msg_Dbg( p_this, "net: connecting to %s port %d", psz_realhost,
i_realport );
}
i_val = vlc_getaddrinfo( p_this, psz_realhost, i_realport, &hints, &res );
if( i_val )
{
msg_Err( p_this, "cannot resolve %s port %d : %s", psz_realhost,
i_realport, vlc_gai_strerror( i_val ) );
free( psz_socks );
return -1;
}
for( ptr = res; (ptr != NULL) && (i_handle == -1); ptr = ptr->ai_next )
{
int fd;
fd = net_Socket( p_this, ptr->ai_family, ptr->ai_socktype,
ptr->ai_protocol );
if( fd == -1 )
continue;
if( connect( fd, ptr->ai_addr, ptr->ai_addrlen ) )
{
socklen_t i_val_size = sizeof( i_val );
div_t d;
struct timeval tv;
vlc_value_t timeout;
#if defined( WIN32 ) || defined( UNDER_CE )
if( WSAGetLastError() != WSAEWOULDBLOCK )
{
if( WSAGetLastError () == WSAENETUNREACH )
b_unreach = VLC_TRUE;
else
msg_Warn( p_this, "connection to %s port %d failed (%d)",
psz_host, i_port, WSAGetLastError( ) );
net_Close( fd );
continue;
}
#else
if( errno != EINPROGRESS )
{
if( errno == ENETUNREACH )
b_unreach = VLC_TRUE;
else
msg_Warn( p_this, "connection to %s port %d : %s", psz_host,
i_port, strerror( errno ) );
net_Close( fd );
continue;
}
#endif
var_Create( p_this, "ipv4-timeout",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Get( p_this, "ipv4-timeout", &timeout );
if( timeout.i_int < 0 )
{
msg_Err( p_this, "invalid negative value for ipv4-timeout" );
timeout.i_int = 0;
}
d = div( timeout.i_int, 100 );
msg_Dbg( p_this, "connection in progress" );
do
{
fd_set fds;
if( p_this->b_die )
{
msg_Dbg( p_this, "connection aborted" );
net_Close( fd );
vlc_freeaddrinfo( res );
free( psz_socks );
return -1;
}
/* Initialize file descriptor set */
FD_ZERO( &fds );
FD_SET( fd, &fds );
/* We'll wait 0.1 second if nothing happens */
tv.tv_sec = 0;
tv.tv_usec = (d.quot > 0) ? 100000 : (1000 * d.rem);
i_val = select( fd + 1, NULL, &fds, NULL, &tv );
if( d.quot <= 0 )
{
msg_Dbg( p_this, "connection timed out" );
net_Close( fd );
fd = -1;
break;
}
d.quot--;
}
while( ( i_val == 0 ) || ( ( i_val < 0 ) &&
#if defined( WIN32 ) || defined( UNDER_CE )
( WSAGetLastError() == WSAEWOULDBLOCK )
#else
( errno == EINTR )
#endif
) );
if( fd == -1 )
continue; /* timeout */
if( i_val < 0 )
{
msg_Warn( p_this, "connection aborted (select failed)" );
net_Close( fd );
continue;
}
#if !defined( SYS_BEOS ) && !defined( UNDER_CE )
if( getsockopt( fd, SOL_SOCKET, SO_ERROR, (void*)&i_val,
&i_val_size ) == -1 || i_val != 0 )
{
if( i_val == ENETUNREACH )
b_unreach = VLC_TRUE;
else
{
#ifdef WIN32
msg_Warn( p_this, "connection to %s port %d failed (%d)",
psz_host, i_port, WSAGetLastError( ) );
#else
msg_Warn( p_this, "connection to %s port %d : %s", psz_host,
i_port, strerror( i_val ) );
#endif
}
net_Close( fd );
continue;
}
#endif
}
i_handle = fd; /* success! */
}
vlc_freeaddrinfo( res );
if( i_handle == -1 )
{
if( b_unreach )
msg_Err( p_this, "Host %s port %d is unreachable", psz_host,
i_port );
return -1;
}
if( *psz_socks && *psz_socks != ':' )
{
char *psz_user = var_CreateGetString( p_this, "socks-user" );
char *psz_pwd = var_CreateGetString( p_this, "socks-pwd" );
if( SocksHandshakeTCP( p_this, i_handle, 5, psz_user, psz_pwd,
psz_host, i_port ) )
{
msg_Err( p_this, "failed to use the SOCKS server" );
net_Close( i_handle );
i_handle = -1;
}
free( psz_user );
free( psz_pwd );
}
free( psz_socks );
return i_handle;
}
/*****************************************************************************
* __net_ListenTCP:
*****************************************************************************
* Open TCP passive "listening" socket(s)
* This function returns NULL in case of error.
*****************************************************************************/
int *__net_ListenTCP( vlc_object_t *p_this, const char *psz_host, int i_port )
{
struct addrinfo hints, *res, *ptr;
int i_val, *pi_handles, i_size;
memset( &hints, 0, sizeof( hints ) );
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
msg_Dbg( p_this, "net: listening to %s port %d", psz_host, i_port );
i_val = vlc_getaddrinfo( p_this, psz_host, i_port, &hints, &res );
if( i_val )
{
msg_Err( p_this, "cannot resolve %s port %d : %s", psz_host, i_port,
vlc_gai_strerror( i_val ) );
return NULL;
}
pi_handles = NULL;
i_size = 1;
for( ptr = res; ptr != NULL; ptr = ptr->ai_next )
{
int fd, *newpi;
fd = net_Socket( p_this, ptr->ai_family, ptr->ai_socktype,
ptr->ai_protocol );
if( fd == -1 )
continue;
/* Bind the socket */
if( bind( fd, ptr->ai_addr, ptr->ai_addrlen ) )
{
#if defined(WIN32) || defined(UNDER_CE)
msg_Warn( p_this, "cannot bind socket (%i)", WSAGetLastError( ) );
#else
msg_Warn( p_this, "cannot bind socket (%s)", strerror( errno ) );
#endif
net_Close( fd );
continue;
}
/* Listen */
if( listen( fd, 100 ) == -1 )
{
#if defined(WIN32) || defined(UNDER_CE)
msg_Err( p_this, "cannot bring socket in listening mode (%i)",
WSAGetLastError());
#else
msg_Err( p_this, "cannot bring the socket in listening mode (%s)",
strerror( errno ) );
#endif
net_Close( fd );
continue;
}
newpi = (int *)realloc( pi_handles, (++i_size) * sizeof( int ) );
if( newpi == NULL )
{
net_Close( fd );
break;
}
else
{
newpi[i_size - 2] = fd;
pi_handles = newpi;
}
}
vlc_freeaddrinfo( res );
if( pi_handles != NULL )
pi_handles[i_size - 1] = -1;
return pi_handles;
}
/*****************************************************************************
* __net_Accept:
*****************************************************************************
* Accept a connection on a set of listening sockets and return it
*****************************************************************************/
int __net_Accept( vlc_object_t *p_this, int *pi_fd, mtime_t i_wait )
{
vlc_bool_t b_die = p_this->b_die, b_block = (i_wait < 0);
while( p_this->b_die == b_die )
{
int i_val = -1, *pi, *pi_end;
struct timeval timeout;
fd_set fds_r, fds_e;
pi = pi_fd;
/* Initialize file descriptor set */
FD_ZERO( &fds_r );
FD_ZERO( &fds_e );
for( pi = pi_fd; *pi != -1; pi++ )
{
int i_fd = *pi;
if( i_fd > i_val )
i_val = i_fd;
FD_SET( i_fd, &fds_r );
FD_SET( i_fd, &fds_e );
}
pi_end = pi;
timeout.tv_sec = 0;
timeout.tv_usec = b_block ? 500000 : i_wait;
i_val = select( i_val + 1, &fds_r, NULL, &fds_e, &timeout );
if( ( ( i_val < 0 ) && ( errno == EINTR ) ) || i_val == 0 )
{
if( b_block )
continue;
else
return -1;
}
else if( i_val < 0 )
{
#if defined(WIN32) || defined(UNDER_CE)
msg_Err( p_this, "network select error (%i)", WSAGetLastError() );
#else
msg_Err( p_this, "network select error (%s)", strerror( errno ) );
#endif
return -1;
}
for( pi = pi_fd; *pi != -1; pi++ )
{
int i_fd = *pi;
if( !FD_ISSET( i_fd, &fds_r ) && !FD_ISSET( i_fd, &fds_e ) )
continue;
i_val = accept( i_fd, NULL, 0 );
if( i_val < 0 )
{
#if defined(WIN32) || defined(UNDER_CE)
msg_Err( p_this, "accept failed (%i)", WSAGetLastError() );
#else
msg_Err( p_this, "accept failed (%s)", strerror( errno ) );
#endif
}
else
{
/*
* This round-robin trick ensures that the first sockets in
* pi_fd won't prevent the last ones from getting accept'ed.
*/
--pi_end;
memmove( pi, pi + 1, pi_end - pi );
*pi_end = i_fd;
return i_val;
}
}
}
return -1;
}
/*****************************************************************************
* __net_ConnectUDP:
*****************************************************************************
* Open a UDP socket to send data to a defined destination, with an optional
* hop limit.
*****************************************************************************/
int __net_ConnectUDP( vlc_object_t *p_this, const char *psz_host, int i_port,
int hlim )
{
struct addrinfo hints, *res, *ptr;
int i_val, i_handle = -1;
vlc_bool_t b_unreach = VLC_FALSE;
if( i_port == 0 )
i_port = 1234; /* historical VLC thing */
memset( &hints, 0, sizeof( hints ) );
hints.ai_socktype = SOCK_DGRAM;
msg_Dbg( p_this, "net: connecting to %s port %d", psz_host, i_port );
i_val = vlc_getaddrinfo( p_this, psz_host, i_port, &hints, &res );
if( i_val )
{
msg_Err( p_this, "cannot resolve %s port %d : %s", psz_host, i_port,
vlc_gai_strerror( i_val ) );
return -1;
}
for( ptr = res; ptr != NULL; ptr = ptr->ai_next )
{
int fd;
fd = net_Socket( p_this, ptr->ai_family, ptr->ai_socktype,
ptr->ai_protocol );
if( fd == -1 )
continue;
#if !defined( SYS_BEOS )
else
{
int i_val;
/* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s) to avoid
* packet loss caused by scheduling problems */
i_val = 0x80000;
setsockopt( i_handle, SOL_SOCKET, SO_RCVBUF, (void *)&i_val,
sizeof( i_val ) );
i_val = 0x80000;
setsockopt( i_handle, SOL_SOCKET, SO_SNDBUF, (void *)&i_val,
sizeof( i_val ) );
}
#endif
if( connect( fd, ptr->ai_addr, ptr->ai_addrlen ) == 0 )
{
/* success */
i_handle = fd;
break;
}
#if defined( WIN32 ) || defined( UNDER_CE )
if( WSAGetLastError () == WSAENETUNREACH )
#else
if( errno == ENETUNREACH )
#endif
b_unreach = VLC_TRUE;
else
{
msg_Warn( p_this, "%s port %d : %s", psz_host, i_port,
strerror( errno ) );
net_Close( fd );
continue;
}
}
vlc_freeaddrinfo( res );
if( i_handle == -1 )
{
if( b_unreach )
msg_Err( p_this, "Host %s port %d is unreachable", psz_host,
i_port );
return -1;
}
return i_handle;
}
/*****************************************************************************
* __net_OpenUDP:
*****************************************************************************
* Open a UDP connection and return a handle
*****************************************************************************/
int __net_OpenUDP( vlc_object_t *p_this, const char *psz_bind, int i_bind,
const char *psz_server, int i_server )
{
vlc_value_t v4, v6;
void *private;
network_socket_t sock;
module_t *p_network = NULL;
if( ( psz_server != NULL ) && ( psz_server[0] == '\0' ) )
msg_Warn( p_this, "calling net_OpenUDP with an explicit destination "
"is obsolete - use net_ConnectUDP instead" );
if( i_server != 0 )
msg_Warn( p_this, "calling net_OpenUDP with an explicit destination "
"port is obsolete - use __net_ConnectUDP instead" );
if( psz_server == NULL ) psz_server = "";
if( psz_bind == NULL ) psz_bind = "";
/* Prepare the network_socket_t structure */
sock.psz_bind_addr = psz_bind;
sock.i_bind_port = i_bind;
sock.psz_server_addr = psz_server;
sock.i_server_port = i_server;
sock.i_ttl = 0;
sock.v6only = 0;
sock.i_handle = -1;
msg_Dbg( p_this, "net: connecting to '[%s]:%d@[%s]:%d'",
psz_server, i_server, psz_bind, i_bind );
/* Check if we have force ipv4 or ipv6 */
var_Create( p_this, "ipv4", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
var_Get( p_this, "ipv4", &v4 );
var_Create( p_this, "ipv6", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
var_Get( p_this, "ipv6", &v6 );
if( !v4.b_bool )
{
if( v6.b_bool )
sock.v6only = 1;
/* try IPv6 first (unless IPv4 forced) */
private = p_this->p_private;
p_this->p_private = (void*)&sock;
p_network = module_Need( p_this, "network", "ipv6", VLC_TRUE );
if( p_network != NULL )
module_Unneed( p_this, p_network );
p_this->p_private = private;
/*
* Check if the IP stack can receive IPv4 packets on IPv6 sockets.
* If yes, then it is better to use the IPv6 socket.
* Otherwise, if we also get an IPv4, we have to choose, so we use
* IPv4 only.
*/
if( ( sock.i_handle != -1 ) && ( ( sock.v6only == 0 ) || v6.b_bool ) )
return sock.i_handle;
}
if( !v6.b_bool )
{
int fd6 = sock.i_handle;
/* also try IPv4 (unless IPv6 forced) */
private = p_this->p_private;
p_this->p_private = (void*)&sock;
p_network = module_Need( p_this, "network", "ipv4", VLC_TRUE );
if( p_network != NULL )
module_Unneed( p_this, p_network );
p_this->p_private = private;
if( fd6 != -1 )
{
if( sock.i_handle != -1 )
{
msg_Warn( p_this, "net: lame IPv6/IPv4 dual-stack present. "
"Using only IPv4." );
net_Close( fd6 );
}
else
sock.i_handle = fd6;
}
}
if( sock.i_handle == -1 )
msg_Dbg( p_this, "net: connection to '[%s]:%d@[%s]:%d' failed",
psz_server, i_server, psz_bind, i_bind );
return sock.i_handle;
}
/*****************************************************************************
* __net_Close:
......@@ -706,18 +132,6 @@ void net_Close( int fd )
#endif
}
void net_ListenClose( int *pi_fd )
{
if( pi_fd != NULL )
{
int *pi;
for( pi = pi_fd; *pi != -1; pi++ )
net_Close( *pi );
free( pi_fd );
}
}
/*****************************************************************************
* __net_Read:
*****************************************************************************
......@@ -1099,200 +513,6 @@ int __net_vaPrintf( vlc_object_t *p_this, int fd, v_socket_t *p_vs,
}
/*****************************************************************************
* SocksNegociate:
*****************************************************************************
* Negociate authentication with a SOCKS server.
*****************************************************************************/
static int SocksNegociate( vlc_object_t *p_obj,
int fd, int i_socks_version,
char *psz_socks_user,
char *psz_socks_passwd )
{
uint8_t buffer[128+2*256];
int i_len;
vlc_bool_t b_auth = VLC_FALSE;
if( i_socks_version != 5 )
return VLC_SUCCESS;
/* We negociate authentication */
if( psz_socks_user && psz_socks_passwd &&
*psz_socks_user && *psz_socks_passwd )
b_auth = VLC_TRUE;
buffer[0] = i_socks_version; /* SOCKS version */
if( b_auth )
{
buffer[1] = 2; /* Number of methods */
buffer[2] = 0x00; /* - No auth required */
buffer[3] = 0x02; /* - USer/Password */
i_len = 4;
}
else
{
buffer[1] = 1; /* Number of methods */
buffer[2] = 0x00; /* - No auth required */
i_len = 3;
}
if( net_Write( p_obj, fd, NULL, buffer, i_len ) != i_len )
return VLC_EGENERIC;
if( net_Read( p_obj, fd, NULL, buffer, 2, VLC_TRUE ) != 2 )
return VLC_EGENERIC;
msg_Dbg( p_obj, "socks: v=%d method=%x", buffer[0], buffer[1] );
if( buffer[1] == 0x00 )
{
msg_Dbg( p_obj, "socks: no authentication required" );
}
else if( buffer[1] == 0x02 )
{
int i_len1 = __MIN( strlen(psz_socks_user), 255 );
int i_len2 = __MIN( strlen(psz_socks_passwd), 255 );
msg_Dbg( p_obj, "socks: username/password authentication" );
/* XXX: we don't support user/pwd > 255 (truncated)*/
buffer[0] = i_socks_version; /* Version */
buffer[1] = i_len1; /* User length */
memcpy( &buffer[2], psz_socks_user, i_len1 );
buffer[2+i_len1] = i_len2; /* Password length */
memcpy( &buffer[2+i_len1+1], psz_socks_passwd, i_len2 );
i_len = 3 + i_len1 + i_len2;
if( net_Write( p_obj, fd, NULL, buffer, i_len ) != i_len )
return VLC_EGENERIC;
if( net_Read( p_obj, fd, NULL, buffer, 2, VLC_TRUE ) != 2 )
return VLC_EGENERIC;
msg_Dbg( p_obj, "socks: v=%d status=%x", buffer[0], buffer[1] );
if( buffer[1] != 0x00 )
{
msg_Err( p_obj, "socks: authentication rejected" );
return VLC_EGENERIC;
}
}
else
{
if( b_auth )
msg_Err( p_obj, "socks: unsupported authentication method %x",
buffer[0] );
else
msg_Err( p_obj, "socks: authentification needed" );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* SocksHandshakeTCP:
*****************************************************************************
* Open a TCP connection using a SOCKS server and return a handle (RFC 1928)
*****************************************************************************/
static int SocksHandshakeTCP( vlc_object_t *p_obj,
int fd,
int i_socks_version,
char *psz_socks_user, char *psz_socks_passwd,
const char *psz_host, int i_port )
{
uint8_t buffer[128+2*256];
if( i_socks_version != 4 && i_socks_version != 5 )
{
msg_Warn( p_obj, "invalid socks protocol version %d", i_socks_version );
i_socks_version = 5;
}
if( i_socks_version == 5 &&
SocksNegociate( p_obj, fd, i_socks_version,
psz_socks_user, psz_socks_passwd ) )
return VLC_EGENERIC;
if( i_socks_version == 4 )
{
struct addrinfo hints = { 0 }, *p_res;
/* v4 only support ipv4 */
hints.ai_family = AF_INET;
if( vlc_getaddrinfo( p_obj, psz_host, 0, &hints, &p_res ) )
return VLC_EGENERIC;
buffer[0] = i_socks_version;
buffer[1] = 0x01; /* CONNECT */
SetWBE( &buffer[2], i_port ); /* Port */
memcpy( &buffer[4], /* Address */
&((struct sockaddr_in *)(p_res->ai_addr))->sin_addr, 4 );
vlc_freeaddrinfo( p_res );
buffer[8] = 0; /* Empty user id */
if( net_Write( p_obj, fd, NULL, buffer, 9 ) != 9 )
return VLC_EGENERIC;
if( net_Read( p_obj, fd, NULL, buffer, 8, VLC_TRUE ) != 8 )
return VLC_EGENERIC;
msg_Dbg( p_obj, "socks: v=%d cd=%d",
buffer[0], buffer[1] );
if( buffer[1] != 90 )
return VLC_EGENERIC;
}
else if( i_socks_version == 5 )
{
int i_hlen = __MIN(strlen( psz_host ), 255);
int i_len;
buffer[0] = i_socks_version; /* Version */
buffer[1] = 0x01; /* Cmd: connect */
buffer[2] = 0x00; /* Reserved */
buffer[3] = 3; /* ATYP: for now domainname */
buffer[4] = i_hlen;
memcpy( &buffer[5], psz_host, i_hlen );
SetWBE( &buffer[5+i_hlen], i_port );
i_len = 5 + i_hlen + 2;
if( net_Write( p_obj, fd, NULL, buffer, i_len ) != i_len )
return VLC_EGENERIC;
/* Read the header */
if( net_Read( p_obj, fd, NULL, buffer, 5, VLC_TRUE ) != 5 )
return VLC_EGENERIC;
msg_Dbg( p_obj, "socks: v=%d rep=%d atyp=%d",
buffer[0], buffer[1], buffer[3] );
if( buffer[1] != 0x00 )
{
msg_Err( p_obj, "socks: CONNECT request failed\n" );
return VLC_EGENERIC;
}
/* Read the remaining bytes */
if( buffer[3] == 0x01 )
i_len = 4-1 + 2;
else if( buffer[3] == 0x03 )
i_len = buffer[4] + 2;
else if( buffer[3] == 0x04 )
i_len = 16-1+2;
else
return VLC_EGENERIC;
if( net_Read( p_obj, fd, NULL, buffer, i_len, VLC_TRUE ) != i_len )
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* inet_pton replacement for obsolete and/or crap operating systems
*****************************************************************************/
......
src/network/tcp.c 0 → 100644
View file @ 8acc19a5
/*****************************************************************************
* tcp.c:
*****************************************************************************
* Copyright (C) 2004-2005 the VideoLAN team
* $Id$
*
* Authors: Laurent Aimar <fenrir@videolan.org>
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <stdlib.h>
#include <vlc/vlc.h>
#include <errno.h>
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "network.h"
static int SocksNegociate( vlc_object_t *, int fd, int i_socks_version,
char *psz_socks_user, char *psz_socks_passwd );
static int SocksHandshakeTCP( vlc_object_t *,
int fd, int i_socks_version,
char *psz_socks_user, char *psz_socks_passwd,
const char *psz_host, int i_port );
extern int net_Socket( vlc_object_t *p_this, int i_family, int i_socktype,
int i_protocol );
/*****************************************************************************
* __net_ConnectTCP:
*****************************************************************************
* Open a TCP connection and return a handle
*****************************************************************************/
int __net_ConnectTCP( vlc_object_t *p_this, const char *psz_host, int i_port )
{
struct addrinfo hints, *res, *ptr;
const char *psz_realhost;
char *psz_socks;
int i_realport, i_val, i_handle = -1;
vlc_bool_t b_unreach = VLC_FALSE;
if( i_port == 0 )
i_port = 80; /* historical VLC thing */
memset( &hints, 0, sizeof( hints ) );
hints.ai_socktype = SOCK_STREAM;
psz_socks = var_CreateGetString( p_this, "socks" );
if( *psz_socks && *psz_socks != ':' )
{
char *psz = strchr( psz_socks, ':' );
if( psz )
*psz++ = '\0';
psz_realhost = psz_socks;
i_realport = ( psz != NULL ) ? atoi( psz ) : 1080;
msg_Dbg( p_this, "net: connecting to %s port %d for %s port %d",
psz_realhost, i_realport, psz_host, i_port );
}
else
{
psz_realhost = psz_host;
i_realport = i_port;
msg_Dbg( p_this, "net: connecting to %s port %d", psz_realhost,
i_realport );
}
i_val = vlc_getaddrinfo( p_this, psz_realhost, i_realport, &hints, &res );
if( i_val )
{
msg_Err( p_this, "cannot resolve %s port %d : %s", psz_realhost,
i_realport, vlc_gai_strerror( i_val ) );
free( psz_socks );
return -1;
}
for( ptr = res; (ptr != NULL) && (i_handle == -1); ptr = ptr->ai_next )
{
int fd;
fd = net_Socket( p_this, ptr->ai_family, ptr->ai_socktype,
ptr->ai_protocol );
if( fd == -1 )
continue;
if( connect( fd, ptr->ai_addr, ptr->ai_addrlen ) )
{
socklen_t i_val_size = sizeof( i_val );
div_t d;
struct timeval tv;
vlc_value_t timeout;
#if defined( WIN32 ) || defined( UNDER_CE )
if( WSAGetLastError() != WSAEWOULDBLOCK )
{
if( WSAGetLastError () == WSAENETUNREACH )
b_unreach = VLC_TRUE;
else
msg_Warn( p_this, "connection to %s port %d failed (%d)",
psz_host, i_port, WSAGetLastError( ) );
net_Close( fd );
continue;
}
#else
if( errno != EINPROGRESS )
{
if( errno == ENETUNREACH )
b_unreach = VLC_TRUE;
else
msg_Warn( p_this, "connection to %s port %d : %s", psz_host,
i_port, strerror( errno ) );
net_Close( fd );
continue;
}
#endif
var_Create( p_this, "ipv4-timeout",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Get( p_this, "ipv4-timeout", &timeout );
if( timeout.i_int < 0 )
{
msg_Err( p_this, "invalid negative value for ipv4-timeout" );
timeout.i_int = 0;
}
d = div( timeout.i_int, 100 );
msg_Dbg( p_this, "connection in progress" );
do
{
fd_set fds;
if( p_this->b_die )
{
msg_Dbg( p_this, "connection aborted" );
net_Close( fd );
vlc_freeaddrinfo( res );
free( psz_socks );
return -1;
}
/* Initialize file descriptor set */
FD_ZERO( &fds );
FD_SET( fd, &fds );
/* We'll wait 0.1 second if nothing happens */
tv.tv_sec = 0;
tv.tv_usec = (d.quot > 0) ? 100000 : (1000 * d.rem);
i_val = select( fd + 1, NULL, &fds, NULL, &tv );
if( d.quot <= 0 )
{
msg_Dbg( p_this, "connection timed out" );
net_Close( fd );
fd = -1;
break;
}
d.quot--;
}
while( ( i_val == 0 ) || ( ( i_val < 0 ) &&
#if defined( WIN32 ) || defined( UNDER_CE )
( WSAGetLastError() == WSAEWOULDBLOCK )
#else
( errno == EINTR )
#endif
) );
if( fd == -1 )
continue; /* timeout */
if( i_val < 0 )
{
msg_Warn( p_this, "connection aborted (select failed)" );
net_Close( fd );
continue;
}
#if !defined( SYS_BEOS ) && !defined( UNDER_CE )
if( getsockopt( fd, SOL_SOCKET, SO_ERROR, (void*)&i_val,
&i_val_size ) == -1 || i_val != 0 )
{
if( i_val == ENETUNREACH )
b_unreach = VLC_TRUE;
else
{
#ifdef WIN32
msg_Warn( p_this, "connection to %s port %d failed (%d)",
psz_host, i_port, WSAGetLastError( ) );
#else
msg_Warn( p_this, "connection to %s port %d : %s", psz_host,
i_port, strerror( i_val ) );
#endif
}
net_Close( fd );
continue;
}
#endif
}
i_handle = fd; /* success! */
}
vlc_freeaddrinfo( res );
if( i_handle == -1 )
{
if( b_unreach )
msg_Err( p_this, "Host %s port %d is unreachable", psz_host,
i_port );
return -1;
}
if( *psz_socks && *psz_socks != ':' )
{
char *psz_user = var_CreateGetString( p_this, "socks-user" );
char *psz_pwd = var_CreateGetString( p_this, "socks-pwd" );
if( SocksHandshakeTCP( p_this, i_handle, 5, psz_user, psz_pwd,
psz_host, i_port ) )
{
msg_Err( p_this, "failed to use the SOCKS server" );
net_Close( i_handle );
i_handle = -1;
}
free( psz_user );
free( psz_pwd );
}
free( psz_socks );
return i_handle;
}
/*****************************************************************************
* __net_ListenTCP:
*****************************************************************************
* Open TCP passive "listening" socket(s)
* This function returns NULL in case of error.
*****************************************************************************/
int *__net_ListenTCP( vlc_object_t *p_this, const char *psz_host, int i_port )
{
struct addrinfo hints, *res, *ptr;
int i_val, *pi_handles, i_size;
memset( &hints, 0, sizeof( hints ) );
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
msg_Dbg( p_this, "net: listening to %s port %d", psz_host, i_port );
i_val = vlc_getaddrinfo( p_this, psz_host, i_port, &hints, &res );
if( i_val )
{
msg_Err( p_this, "cannot resolve %s port %d : %s", psz_host, i_port,
vlc_gai_strerror( i_val ) );
return NULL;
}
pi_handles = NULL;
i_size = 1;
for( ptr = res; ptr != NULL; ptr = ptr->ai_next )
{
int fd, *newpi;
fd = net_Socket( p_this, ptr->ai_family, ptr->ai_socktype,
ptr->ai_protocol );
if( fd == -1 )
continue;
/* Bind the socket */
if( bind( fd, ptr->ai_addr, ptr->ai_addrlen ) )
{
#if defined(WIN32) || defined(UNDER_CE)
msg_Warn( p_this, "cannot bind socket (%i)", WSAGetLastError( ) );
#else
msg_Warn( p_this, "cannot bind socket (%s)", strerror( errno ) );
#endif
net_Close( fd );
continue;
}
/* Listen */
if( listen( fd, 100 ) == -1 )
{
#if defined(WIN32) || defined(UNDER_CE)
msg_Err( p_this, "cannot bring socket in listening mode (%i)",
WSAGetLastError());
#else
msg_Err( p_this, "cannot bring the socket in listening mode (%s)",
strerror( errno ) );
#endif
net_Close( fd );
continue;
}
newpi = (int *)realloc( pi_handles, (++i_size) * sizeof( int ) );
if( newpi == NULL )
{
net_Close( fd );
break;
}
else
{
newpi[i_size - 2] = fd;
pi_handles = newpi;
}
}
vlc_freeaddrinfo( res );
if( pi_handles != NULL )
pi_handles[i_size - 1] = -1;
return pi_handles;
}
/*****************************************************************************
* __net_Accept:
*****************************************************************************
* Accept a connection on a set of listening sockets and return it
*****************************************************************************/
int __net_Accept( vlc_object_t *p_this, int *pi_fd, mtime_t i_wait )
{
vlc_bool_t b_die = p_this->b_die, b_block = (i_wait < 0);
while( p_this->b_die == b_die )
{
int i_val = -1, *pi, *pi_end;
struct timeval timeout;
fd_set fds_r, fds_e;
pi = pi_fd;
/* Initialize file descriptor set */
FD_ZERO( &fds_r );
FD_ZERO( &fds_e );
for( pi = pi_fd; *pi != -1; pi++ )
{
int i_fd = *pi;
if( i_fd > i_val )
i_val = i_fd;
FD_SET( i_fd, &fds_r );
FD_SET( i_fd, &fds_e );
}
pi_end = pi;
timeout.tv_sec = 0;
timeout.tv_usec = b_block ? 500000 : i_wait;
i_val = select( i_val + 1, &fds_r, NULL, &fds_e, &timeout );
if( ( ( i_val < 0 ) && ( errno == EINTR ) ) || i_val == 0 )
{
if( b_block )
continue;
else
return -1;
}
else if( i_val < 0 )
{
#if defined(WIN32) || defined(UNDER_CE)
msg_Err( p_this, "network select error (%i)", WSAGetLastError() );
#else
msg_Err( p_this, "network select error (%s)", strerror( errno ) );
#endif
return -1;
}
for( pi = pi_fd; *pi != -1; pi++ )
{
int i_fd = *pi;
if( !FD_ISSET( i_fd, &fds_r ) && !FD_ISSET( i_fd, &fds_e ) )
continue;
i_val = accept( i_fd, NULL, 0 );
if( i_val < 0 )
{
#if defined(WIN32) || defined(UNDER_CE)
msg_Err( p_this, "accept failed (%i)", WSAGetLastError() );
#else
msg_Err( p_this, "accept failed (%s)", strerror( errno ) );
#endif
}
else
{
/*
* This round-robin trick ensures that the first sockets in
* pi_fd won't prevent the last ones from getting accept'ed.
*/
--pi_end;
memmove( pi, pi + 1, pi_end - pi );
*pi_end = i_fd;
return i_val;
}
}
}
return -1;
}
/*****************************************************************************
* SocksNegociate:
*****************************************************************************
* Negociate authentication with a SOCKS server.
*****************************************************************************/
static int SocksNegociate( vlc_object_t *p_obj,
int fd, int i_socks_version,
char *psz_socks_user,
char *psz_socks_passwd )
{
uint8_t buffer[128+2*256];
int i_len;
vlc_bool_t b_auth = VLC_FALSE;
if( i_socks_version != 5 )
return VLC_SUCCESS;
/* We negociate authentication */
if( psz_socks_user && psz_socks_passwd &&
*psz_socks_user && *psz_socks_passwd )
b_auth = VLC_TRUE;
buffer[0] = i_socks_version; /* SOCKS version */
if( b_auth )
{
buffer[1] = 2; /* Number of methods */
buffer[2] = 0x00; /* - No auth required */
buffer[3] = 0x02; /* - USer/Password */
i_len = 4;
}
else
{
buffer[1] = 1; /* Number of methods */
buffer[2] = 0x00; /* - No auth required */
i_len = 3;
}
if( net_Write( p_obj, fd, NULL, buffer, i_len ) != i_len )
return VLC_EGENERIC;
if( net_Read( p_obj, fd, NULL, buffer, 2, VLC_TRUE ) != 2 )
return VLC_EGENERIC;
msg_Dbg( p_obj, "socks: v=%d method=%x", buffer[0], buffer[1] );
if( buffer[1] == 0x00 )
{
msg_Dbg( p_obj, "socks: no authentication required" );
}
else if( buffer[1] == 0x02 )
{
int i_len1 = __MIN( strlen(psz_socks_user), 255 );
int i_len2 = __MIN( strlen(psz_socks_passwd), 255 );
msg_Dbg( p_obj, "socks: username/password authentication" );
/* XXX: we don't support user/pwd > 255 (truncated)*/
buffer[0] = i_socks_version; /* Version */
buffer[1] = i_len1; /* User length */
memcpy( &buffer[2], psz_socks_user, i_len1 );
buffer[2+i_len1] = i_len2; /* Password length */
memcpy( &buffer[2+i_len1+1], psz_socks_passwd, i_len2 );
i_len = 3 + i_len1 + i_len2;
if( net_Write( p_obj, fd, NULL, buffer, i_len ) != i_len )
return VLC_EGENERIC;
if( net_Read( p_obj, fd, NULL, buffer, 2, VLC_TRUE ) != 2 )
return VLC_EGENERIC;
msg_Dbg( p_obj, "socks: v=%d status=%x", buffer[0], buffer[1] );
if( buffer[1] != 0x00 )
{
msg_Err( p_obj, "socks: authentication rejected" );
return VLC_EGENERIC;
}
}
else
{
if( b_auth )
msg_Err( p_obj, "socks: unsupported authentication method %x",
buffer[0] );
else
msg_Err( p_obj, "socks: authentification needed" );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* SocksHandshakeTCP:
*****************************************************************************
* Open a TCP connection using a SOCKS server and return a handle (RFC 1928)
*****************************************************************************/
static int SocksHandshakeTCP( vlc_object_t *p_obj,
int fd,
int i_socks_version,
char *psz_socks_user, char *psz_socks_passwd,
const char *psz_host, int i_port )
{
uint8_t buffer[128+2*256];
if( i_socks_version != 4 && i_socks_version != 5 )
{
msg_Warn( p_obj, "invalid socks protocol version %d", i_socks_version );
i_socks_version = 5;
}
if( i_socks_version == 5 &&
SocksNegociate( p_obj, fd, i_socks_version,
psz_socks_user, psz_socks_passwd ) )
return VLC_EGENERIC;
if( i_socks_version == 4 )
{
struct addrinfo hints = { 0 }, *p_res;
/* v4 only support ipv4 */
hints.ai_family = AF_INET;
if( vlc_getaddrinfo( p_obj, psz_host, 0, &hints, &p_res ) )
return VLC_EGENERIC;
buffer[0] = i_socks_version;
buffer[1] = 0x01; /* CONNECT */
SetWBE( &buffer[2], i_port ); /* Port */
memcpy( &buffer[4], /* Address */
&((struct sockaddr_in *)(p_res->ai_addr))->sin_addr, 4 );
vlc_freeaddrinfo( p_res );
buffer[8] = 0; /* Empty user id */
if( net_Write( p_obj, fd, NULL, buffer, 9 ) != 9 )
return VLC_EGENERIC;
if( net_Read( p_obj, fd, NULL, buffer, 8, VLC_TRUE ) != 8 )
return VLC_EGENERIC;
msg_Dbg( p_obj, "socks: v=%d cd=%d",
buffer[0], buffer[1] );
if( buffer[1] != 90 )
return VLC_EGENERIC;
}
else if( i_socks_version == 5 )
{
int i_hlen = __MIN(strlen( psz_host ), 255);
int i_len;
buffer[0] = i_socks_version; /* Version */
buffer[1] = 0x01; /* Cmd: connect */
buffer[2] = 0x00; /* Reserved */
buffer[3] = 3; /* ATYP: for now domainname */
buffer[4] = i_hlen;
memcpy( &buffer[5], psz_host, i_hlen );
SetWBE( &buffer[5+i_hlen], i_port );
i_len = 5 + i_hlen + 2;
if( net_Write( p_obj, fd, NULL, buffer, i_len ) != i_len )
return VLC_EGENERIC;
/* Read the header */
if( net_Read( p_obj, fd, NULL, buffer, 5, VLC_TRUE ) != 5 )
return VLC_EGENERIC;
msg_Dbg( p_obj, "socks: v=%d rep=%d atyp=%d",
buffer[0], buffer[1], buffer[3] );
if( buffer[1] != 0x00 )
{
msg_Err( p_obj, "socks: CONNECT request failed\n" );
return VLC_EGENERIC;
}
/* Read the remaining bytes */
if( buffer[3] == 0x01 )
i_len = 4-1 + 2;
else if( buffer[3] == 0x03 )
i_len = buffer[4] + 2;
else if( buffer[3] == 0x04 )
i_len = 16-1+2;
else
return VLC_EGENERIC;
if( net_Read( p_obj, fd, NULL, buffer, i_len, VLC_TRUE ) != i_len )
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
void net_ListenClose( int *pi_fd )
{
if( pi_fd != NULL )
{
int *pi;
for( pi = pi_fd; *pi != -1; pi++ )
net_Close( *pi );
free( pi_fd );
}
}
src/network/udp.c 0 → 100644
View file @ 8acc19a5
/*****************************************************************************
* udp.c:
*****************************************************************************
* Copyright (C) 2004-2005 the VideoLAN team
* $Id$
*
* Authors: Laurent Aimar <fenrir@videolan.org>
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <stdlib.h>
#include <vlc/vlc.h>
#include <errno.h>
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "network.h"
#ifndef INADDR_ANY
# define INADDR_ANY 0x00000000
#endif
#ifndef INADDR_NONE
# define INADDR_NONE 0xFFFFFFFF
#endif
extern int net_Socket( vlc_object_t *p_this, int i_family, int i_socktype,
int i_protocol );
/*****************************************************************************
* __net_ConnectUDP:
*****************************************************************************
* Open a UDP socket to send data to a defined destination, with an optional
* hop limit.
*****************************************************************************/
int __net_ConnectUDP( vlc_object_t *p_this, const char *psz_host, int i_port,
int hlim )
{
struct addrinfo hints, *res, *ptr;
int i_val, i_handle = -1;
vlc_bool_t b_unreach = VLC_FALSE;
if( i_port == 0 )
i_port = 1234; /* historical VLC thing */
memset( &hints, 0, sizeof( hints ) );
hints.ai_socktype = SOCK_DGRAM;
msg_Dbg( p_this, "net: connecting to %s port %d", psz_host, i_port );
i_val = vlc_getaddrinfo( p_this, psz_host, i_port, &hints, &res );
if( i_val )
{
msg_Err( p_this, "cannot resolve %s port %d : %s", psz_host, i_port,
vlc_gai_strerror( i_val ) );
return -1;
}
for( ptr = res; ptr != NULL; ptr = ptr->ai_next )
{
int fd;
fd = net_Socket( p_this, ptr->ai_family, ptr->ai_socktype,
ptr->ai_protocol );
if( fd == -1 )
continue;
#if !defined( SYS_BEOS )
else
{
int i_val;
/* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s) to avoid
* packet loss caused by scheduling problems */
i_val = 0x80000;
setsockopt( i_handle, SOL_SOCKET, SO_RCVBUF, (void *)&i_val,
sizeof( i_val ) );
i_val = 0x80000;
setsockopt( i_handle, SOL_SOCKET, SO_SNDBUF, (void *)&i_val,
sizeof( i_val ) );
}
#endif
if( connect( fd, ptr->ai_addr, ptr->ai_addrlen ) == 0 )
{
/* success */
i_handle = fd;
break;
}
#if defined( WIN32 ) || defined( UNDER_CE )
if( WSAGetLastError () == WSAENETUNREACH )
#else
if( errno == ENETUNREACH )
#endif
b_unreach = VLC_TRUE;
else
{
msg_Warn( p_this, "%s port %d : %s", psz_host, i_port,
strerror( errno ) );
net_Close( fd );
continue;
}
}
vlc_freeaddrinfo( res );
if( i_handle == -1 )
{
if( b_unreach )
msg_Err( p_this, "Host %s port %d is unreachable", psz_host,
i_port );
return -1;
}
return i_handle;
}
/*****************************************************************************
* __net_OpenUDP:
*****************************************************************************
* Open a UDP connection and return a handle
*****************************************************************************/
int __net_OpenUDP( vlc_object_t *p_this, const char *psz_bind, int i_bind,
const char *psz_server, int i_server )
{
vlc_value_t v4, v6;
void *private;
network_socket_t sock;
module_t *p_network = NULL;
if( ( psz_server != NULL ) && ( psz_server[0] == '\0' ) )
msg_Warn( p_this, "calling net_OpenUDP with an explicit destination "
"is obsolete - use net_ConnectUDP instead" );
if( i_server != 0 )
msg_Warn( p_this, "calling net_OpenUDP with an explicit destination "
"port is obsolete - use __net_ConnectUDP instead" );
if( psz_server == NULL ) psz_server = "";
if( psz_bind == NULL ) psz_bind = "";
/* Prepare the network_socket_t structure */
sock.psz_bind_addr = psz_bind;
sock.i_bind_port = i_bind;
sock.psz_server_addr = psz_server;
sock.i_server_port = i_server;
sock.i_ttl = 0;
sock.v6only = 0;
sock.i_handle = -1;
msg_Dbg( p_this, "net: connecting to '[%s]:%d@[%s]:%d'",
psz_server, i_server, psz_bind, i_bind );
/* Check if we have force ipv4 or ipv6 */
var_Create( p_this, "ipv4", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
var_Get( p_this, "ipv4", &v4 );
var_Create( p_this, "ipv6", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
var_Get( p_this, "ipv6", &v6 );
if( !v4.b_bool )
{
if( v6.b_bool )
sock.v6only = 1;
/* try IPv6 first (unless IPv4 forced) */
private = p_this->p_private;
p_this->p_private = (void*)&sock;
p_network = module_Need( p_this, "network", "ipv6", VLC_TRUE );
if( p_network != NULL )
module_Unneed( p_this, p_network );
p_this->p_private = private;
/*
* Check if the IP stack can receive IPv4 packets on IPv6 sockets.
* If yes, then it is better to use the IPv6 socket.
* Otherwise, if we also get an IPv4, we have to choose, so we use
* IPv4 only.
*/
if( ( sock.i_handle != -1 ) && ( ( sock.v6only == 0 ) || v6.b_bool ) )
return sock.i_handle;
}
if( !v6.b_bool )
{
int fd6 = sock.i_handle;
/* also try IPv4 (unless IPv6 forced) */
private = p_this->p_private;
p_this->p_private = (void*)&sock;
p_network = module_Need( p_this, "network", "ipv4", VLC_TRUE );
if( p_network != NULL )
module_Unneed( p_this, p_network );
p_this->p_private = private;
if( fd6 != -1 )
{
if( sock.i_handle != -1 )
{
msg_Warn( p_this, "net: lame IPv6/IPv4 dual-stack present. "
"Using only IPv4." );
net_Close( fd6 );
}
else
sock.i_handle = fd6;
}
}
if( sock.i_handle == -1 )
msg_Dbg( p_this, "net: connection to '[%s]:%d@[%s]:%d' failed",
psz_server, i_server, psz_bind, i_bind );
return sock.i_handle;
}
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