* netutils.c: various network functions
*****************************************************************************
* Copyright (C) 1999, 2000, 2001 VideoLAN
+ * $Id: netutils.c,v 1.37 2001/06/02 01:09:03 sam Exp $
*
* Authors: Vincent Seguin <seguin@via.ecp.fr>
* Benoit Steiner <benny@via.ecp.fr>
* Henri Fallon <henri@videolan.org>
+ * Xavier Marchesini <xav@via.ecp.fr>
*
* 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
*****************************************************************************/
#include "defs.h"
-#include <netdb.h> /* gethostbyname() */
#include <stdlib.h> /* free(), realloc(), atoi() */
#include <errno.h> /* errno() */
-#include <string.h> /* bzero(), bcopy() */
+#include <string.h> /* memset() */
+
+#ifdef HAVE_UNISTD_H
#include <unistd.h> /* gethostname() */
+#elif defined( _MSC_VER ) && defined( _WIN32 )
+#include <io.h>
+#endif
+#if !defined( _MSC_VER )
+#include <sys/time.h> /* gettimeofday */
+#endif
+
+#if !defined( WIN32 )
+#include <netdb.h> /* gethostbyname() */
#include <netinet/in.h> /* BSD: struct in_addr */
#include <sys/socket.h> /* BSD: struct sockaddr */
+#endif
+
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h> /* inet_ntoa(), inet_aton() */
#endif
-#if defined (HAVE_NET_IF_H)
+#ifdef SYS_LINUX
+#include <sys/ioctl.h> /* ioctl() */
+#endif
+
+#if defined( WIN32 ) /* tools to get the MAC adress from */
+#include <windows.h> /* the interface under Windows */
+#include <stdio.h>
+#endif
+
+#ifdef HAVE_NET_IF_H
#include <net/if.h> /* interface (arch-dependent) */
#endif
#include "common.h"
#include "mtime.h"
#include "threads.h"
+#include "main.h"
#include "intf_msg.h"
-#if !defined( SYS_BEOS ) && !defined( SYS_NTO )
-
#include "netutils.h"
/*****************************************************************************
- * input_BuildLocalAddr : fill a sockaddr_in structure for local binding
+ * input_channel_t: channel library data
+ *****************************************************************************
+ * Store global channel library data.
+ * The part of the code concerning the channel changing process is unstable
+ * as it depends on the VideoLAN channel server, which isn't frozen for
+ * the time being.
*****************************************************************************/
-int network_BuildLocalAddr( struct sockaddr_in * p_socket, int i_port,
- boolean_t b_broadcast )
+typedef struct input_channel_s
+{
+ int i_channel; /* current channel number */
+ mtime_t last_change; /* last change date */
+} input_channel_t;
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int GetMacAddress ( int i_socket, char *psz_mac );
+#ifdef WIN32
+static int GetAdapterInfo ( int i_adapter, char *psz_string );
+#endif
+
+/*****************************************************************************
+ * network_BuildLocalAddr : fill a sockaddr_in structure for local binding
+ *****************************************************************************/
+int network_BuildLocalAddr( struct sockaddr_in * p_socket, int i_port,
+ char * psz_broadcast )
{
char psz_hostname[INPUT_MAX_SOURCE_LENGTH];
struct hostent * p_hostent;
-
+
/* Reset struct */
memset( p_socket, 0, sizeof( struct sockaddr_in ) );
- p_socket->sin_family = AF_INET; /* family */
+ p_socket->sin_family = AF_INET; /* family */
p_socket->sin_port = htons( i_port );
- if( !b_broadcast )
+ if( psz_broadcast == NULL )
{
/* Try to get our own IP */
if( gethostname( psz_hostname, sizeof(psz_hostname) ) )
}
else
{
- /* Instead of trying to find the broadcast address using non-portable
- * ioctl, let's bind INADDR_ANY */
- strncpy(psz_hostname,"0.0.0.0",sizeof(psz_hostname));
+ /* I didn't manage to make INADDR_ANYT work, even with setsockopt
+ * so, as it's kludgy to try and determine the broadcast addr
+ * it is passed as an argument in the command line */
+ strncpy( psz_hostname, psz_broadcast, INPUT_MAX_SOURCE_LENGTH );
}
/* Try to convert address directly from in_addr - this will work if
intf_ErrMsg( "BuildLocalAddr: unknown host %s", psz_hostname );
return( -1 );
}
-
+
/* Copy the first address of the host in the socket address */
- memcpy( &p_socket->sin_addr, p_hostent->h_addr_list[0],
+ memcpy( &p_socket->sin_addr, p_hostent->h_addr_list[0],
p_hostent->h_length );
}
return( 0 );
}
/*****************************************************************************
- * input_BuildRemoteAddr : fill a sockaddr_in structure for remote host
+ * network_BuildRemoteAddr : fill a sockaddr_in structure for remote host
*****************************************************************************/
int network_BuildRemoteAddr( struct sockaddr_in * p_socket, char * psz_server )
{
/* Reset structure */
memset( p_socket, 0, sizeof( struct sockaddr_in ) );
- p_socket->sin_family = AF_INET; /* family */
- p_socket->sin_port = htons( 0 ); /* This is for remote end */
-
+ p_socket->sin_family = AF_INET; /* family */
+ p_socket->sin_port = htons( 0 ); /* This is for remote end */
+
/* Try to convert address directly from in_addr - this will work if
* psz_in_addr is dotted decimal. */
/* We have a fqdn, try to find its address */
if ( (p_hostent = gethostbyname(psz_server)) == NULL )
{
- intf_ErrMsg( "BuildRemoteAddr: unknown host %s",
+ intf_ErrMsg( "BuildRemoteAddr: unknown host %s",
psz_server );
return( -1 );
}
-
+
/* Copy the first address of the host in the socket address */
- memcpy( &p_socket->sin_addr, p_hostent->h_addr_list[0],
+ memcpy( &p_socket->sin_addr, p_hostent->h_addr_list[0],
p_hostent->h_length );
}
return( 0 );
}
+
+/*****************************************************************************
+ * network_ChannelCreate: initialize global channel method data
+ *****************************************************************************
+ * Initialize channel input method global data. This function should be called
+ * once before any input thread is created or any call to other
+ * input_Channel*() function is attempted.
+ *****************************************************************************/
+int network_ChannelCreate( void )
+{
+/* Even when BSD are supported, BeOS is not likely to be supported, so
+ * I prefer to put it apart */
+#if defined( SYS_BEOS )
+ intf_ErrMsg( "error: channel changing is not yet supported under BeOS" );
+ return( 1 );
+
+#elif defined( SYS_LINUX ) || defined( WIN32 )
+/* FIXME : channels handling only work for linux */
+ /* Allocate structure */
+ p_main->p_channel = malloc( sizeof( input_channel_t ) );
+ if( p_main->p_channel == NULL )
+ {
+ intf_ErrMsg( "network error: could not create channel bank" );
+ return( -1 );
+ }
+
+ /* Initialize structure */
+ p_main->p_channel->i_channel = 0;
+ p_main->p_channel->last_change = 0;
+
+ intf_Msg( "network: channels initialized" );
+ return( 0 );
+
+#else
+ intf_ErrMsg( "network error : channels not supported" );
+ return( 1 );
+
+#endif
+}
+
+/*****************************************************************************
+ * network_ChannelJoin: join a channel
+ *****************************************************************************
+ * This function will try to join a channel. If the relevant interface is
+ * already on the good channel, nothing will be done. Else, and if possible
+ * (if the interface is not locked), the channel server will be contacted
+ * and a change will be requested. The function will block until the change
+ * is effective. Note that once a channel is no more used, it's interface
+ * should be unlocked using input_ChannelLeave().
+ * Non 0 will be returned in case of error.
+ *****************************************************************************/
+int network_ChannelJoin( int i_channel )
+{
+/* I still prefer to put BeOS a bit apart */
+#if defined( SYS_BEOS )
+ intf_ErrMsg( "network error: channels are not yet supported under BeOS" );
+ return( -1 );
+
+#elif defined( SYS_LINUX ) || defined( WIN32 )
+ int i_socket;
+ int i_fromlen;
+ struct sockaddr_in sa_server;
+ struct sockaddr_in sa_client;
+ unsigned int i_version = 12;
+ char psz_mess[ 80 ];
+ char psz_mac[ 40 ];
+ char i_mess_length = 80;
+ unsigned long int i_date;
+ struct timeval answer_delay;
+ int i_nbanswer;
+ char i_answer;
+ fd_set fds;
+ unsigned int i_rc;
+ char * psz_channel_server;
+
+ if( !main_GetIntVariable( INPUT_NETWORK_CHANNEL_VAR,
+ INPUT_NETWORK_CHANNEL_DEFAULT ) )
+ {
+ intf_ErrMsg( "network: channels disabled, to enable them, use the"
+ "--channels option" );
+ return( -1 );
+ }
+
+ /* debug */
+ intf_DbgMsg( "network: ChannelJoin : %d", i_channel );
+ /* If last change is too recent, wait a while */
+ if( mdate() - p_main->p_channel->last_change < INPUT_CHANNEL_CHANGE_DELAY )
+ {
+ intf_WarnMsg( 2, "network: waiting before changing channel" );
+ mwait( p_main->p_channel->last_change + INPUT_CHANNEL_CHANGE_DELAY );
+ }
+
+ p_main->p_channel->last_change = mdate();
+ p_main->p_channel->i_channel = i_channel;
+
+ intf_WarnMsg( 2, "network: joining channel %d", i_channel );
+
+ /*
+ * Initializing the socket
+ */
+ i_socket = socket( AF_INET, SOCK_DGRAM, 0 );
+
+ /*
+ * Getting the server's information
+ */
+ intf_WarnMsg( 6, "Channel server: %s port: %d",
+ main_GetPszVariable( INPUT_CHANNEL_SERVER_VAR,
+ INPUT_CHANNEL_SERVER_DEFAULT ),
+ main_GetIntVariable( INPUT_CHANNEL_PORT_VAR,
+ INPUT_CHANNEL_PORT_DEFAULT ) );
+
+ memset( &sa_server, 0x00, sizeof(struct sockaddr_in) );
+ sa_server.sin_family = AF_INET;
+ sa_server.sin_port = htons( main_GetIntVariable( INPUT_CHANNEL_PORT_VAR,
+ INPUT_CHANNEL_PORT_DEFAULT ) );
+
+ psz_channel_server = strdup( main_GetPszVariable( INPUT_CHANNEL_SERVER_VAR,
+ INPUT_CHANNEL_SERVER_DEFAULT ) );
+#ifdef HAVE_ARPA_INET_H
+ inet_aton( psz_channel_server, &sa_server.sin_addr );
+#else
+ sa_server.sin_addr.s_addr = inet_addr( psz_channel_server );
+#endif
+ free( psz_channel_server );
+
+ /*
+ * Looking for the interface MAC address
+ */
+ if( GetMacAddress( i_socket, psz_mac ) )
+ {
+ intf_ErrMsg( "network error: failed getting MAC address" );
+ return( -1 );
+ }
+
+ /*
+ * Getting date of the client in seconds
+ */
+ i_date = mdate() / 1000000;
+ intf_DbgMsg( "vlcs: date %lu", i_date );
+
+ /*
+ * Build of the message
+ */
+ sprintf( psz_mess, "%d %u %lu %s \n",
+ i_channel, i_version, i_date, psz_mac );
+
+ intf_DbgMsg( "vlcs: The message is %s", psz_mess );
+
+ /*
+ * Open the socket 2
+ */
+ memset( &sa_client, 0x00, sizeof(struct sockaddr_in) );
+ sa_client.sin_family = AF_INET;
+ sa_client.sin_port = htons(4312);
+ sa_client.sin_addr.s_addr = INADDR_ANY;
+ i_fromlen = sizeof( struct sockaddr );
+ i_rc = bind( i_socket, (struct sockaddr *)(&sa_client),\
+ sizeof(struct sockaddr) );
+ if ( i_rc )
+ {
+ intf_ErrMsg( "vlcs: Unable to bind socket:%u ", i_rc );
+ /* TODO put CS_R_BIND in types.h*/
+ /* return CS_R_SOCKET;*/
+ return -1;
+ }
+
+ /*
+ * Send the message
+ */
+ sendto( i_socket, psz_mess, i_mess_length, 0, \
+ (struct sockaddr *)(&sa_server), \
+ sizeof(struct sockaddr) );
+
+ /*
+ * Waiting 5 sec for one answer from the server
+ */
+ answer_delay.tv_sec = 5;
+ answer_delay.tv_usec = 0;
+ FD_ZERO( &fds );
+ FD_SET( i_socket, &fds );
+ i_nbanswer = select( i_socket + 1, &fds, NULL, NULL, &answer_delay );
+
+ switch( i_nbanswer )
+ {
+ case 0:
+ intf_DbgMsg( "vlcs: no answer" );
+ break;
+
+ case -1:
+ intf_DbgMsg( "vlcs: unable to receive the answer ");
+ break;
+
+ default:
+ recvfrom( i_socket, &i_answer, sizeof(char), 0,\
+ (struct sockaddr *)(&sa_client), &i_fromlen);
+
+ intf_DbgMsg( "vlcs: the answer : %i", i_answer );
+
+ switch( i_answer )
+ {
+ case -1:
+ intf_DbgMsg( "vlcs: the server failed to create the thread" );
+ break;
+ case 0:
+ intf_DbgMsg( "vlcs: the server tries to change the channel" );
+ break;
+ default:
+ intf_DbgMsg( "vlcs: unknown answer !" );
+ break;
+ }
+ break;
+ }
+
+ /*
+ * Close the socket
+ */
+ close( i_socket );
+
+ return( 0 );
+
+#else
+ intf_ErrMsg( "network error: channels not supported" );
+ return( -1 );
+
+#endif
+}
+
+/* Following functions are local */
+
+/*****************************************************************************
+ * GetMacAddress: extract the MAC Address
+ *****************************************************************************/
+static int GetMacAddress( int i_socket, char *psz_mac )
+{
+#if defined( SYS_LINUX )
+ struct ifreq interface;
+ int i_ret;
+
+ /*
+ * Looking for information about the eth0 interface
+ */
+ interface.ifr_addr.sa_family = AF_INET;
+ strcpy( interface.ifr_name, INPUT_IFACE_DEFAULT );
+
+ i_ret = ioctl( i_socket, SIOCGIFHWADDR, &interface );
+
+ if( i_ret )
+ {
+ intf_ErrMsg( "network error: ioctl SIOCGIFHWADDR failed" );
+ return( i_ret );
+ }
+
+ sprintf( psz_mac, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
+ interface.ifr_hwaddr.sa_data[0] & 0xff,
+ interface.ifr_hwaddr.sa_data[1] & 0xff,
+ interface.ifr_hwaddr.sa_data[2] & 0xff,
+ interface.ifr_hwaddr.sa_data[3] & 0xff,
+ interface.ifr_hwaddr.sa_data[4] & 0xff,
+ interface.ifr_hwaddr.sa_data[5] & 0xff );
+
+ return( 0 );
+
+#elif defined( WIN32 )
+ int i, i_ret = -1;
+
+ /* Get adapter list - support for more than one adapter */
+ LANA_ENUM AdapterList;
+ NCB Ncb;
+
+ intf_WarnMsg( 2, "network: looking for MAC address" );
+
+ memset( &Ncb, 0, sizeof( NCB ) );
+ Ncb.ncb_command = NCBENUM;
+ Ncb.ncb_buffer = (unsigned char *)&AdapterList;
+ Ncb.ncb_length = sizeof( AdapterList );
+ Netbios( &Ncb );
+
+ /* Get all of the local ethernet addresses */
+ for ( i = 0; i < AdapterList.length ; ++i )
+ {
+ if ( GetAdapterInfo ( AdapterList.lana[ i ], psz_mac ) == 0 )
+ {
+ i_ret = 0;
+ }
+ }
+
+ return( i_ret );
+
+#else
+ return( -1);
+
#endif
+}
+
+#ifdef WIN32
+/*****************************************************************************
+ * GetAdapterInfo : gets some informations about the interface using NETBIOS
+ *****************************************************************************/
+static int GetAdapterInfo( int i_adapter, char *psz_string )
+{
+ struct ASTAT
+ {
+ ADAPTER_STATUS adapt;
+ NAME_BUFFER psz_name[30];
+ } Adapter;
+
+ /* Reset the LAN adapter so that we can begin querying it */
+ NCB Ncb;
+ memset( &Ncb, 0, sizeof ( Ncb ) );
+ Ncb.ncb_command = NCBRESET;
+ Ncb.ncb_lana_num = i_adapter;
+
+ if( Netbios( &Ncb ) != NRC_GOODRET )
+ {
+ intf_ErrMsg( "network error: reset returned %i", Ncb.ncb_retcode );
+ return -1;
+ }
+
+ /* Prepare to get the adapter status block */
+ memset( &Ncb, 0, sizeof( Ncb ) ) ; /* Initialization */
+ Ncb.ncb_command = NCBASTAT;
+ Ncb.ncb_lana_num = i_adapter;
+
+ strcpy( (char *)Ncb.ncb_callname, "*" );
+
+ memset( &Adapter, 0, sizeof ( Adapter ) );
+ Ncb.ncb_buffer = ( unsigned char * ) &Adapter;
+ Ncb.ncb_length = sizeof ( Adapter );
+
+ /* Get the adapter's info and, if this works, return it in standard,
+ * colon-delimited form. */
+ if ( Netbios( &Ncb ) == 0 )
+ {
+ sprintf ( psz_string, "%02X:%02X:%02X:%02X:%02X:%02X",
+ (int) ( Adapter.adapt.adapter_address[0] ),
+ (int) ( Adapter.adapt.adapter_address[1] ),
+ (int) ( Adapter.adapt.adapter_address[2] ),
+ (int) ( Adapter.adapt.adapter_address[3] ),
+ (int) ( Adapter.adapt.adapter_address[4] ),
+ (int) ( Adapter.adapt.adapter_address[5] ) );
+
+ intf_WarnMsg( 2, "network: found MAC address %s", psz_string );
+
+ return 0;
+ }
+ else
+ {
+ intf_ErrMsg( "network error: ASTAT returned %i", Ncb.ncb_retcode );
+ return -1;
+ }
+}
+#endif /* WIN32 */
projects / vlc / blobdiff