311 lines
15 KiB
PHP
311 lines
15 KiB
PHP
<?php
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// Copyright (C) 2012 Mark Vejvoda, Titus Tscharntke and Tom Reynolds
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// The Megaglest Team, under GNU GPL v3.0
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// ==============================================================
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define( 'INCLUSION_PERMITTED', true );
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require_once( 'config.php' );
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require_once( 'functions.php' );
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// Consider using HTTP POST instead of HTTP GET here, data should always be sent via POST for privacy and security reasons
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// Alternatively, do not retrieve (and transmit) this data at all via HTTP (other than the IP address the game servers advertises) but fetch it from the game server instead
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// general info:
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$glestVersion = (string) clean_str( $_GET['glestVersion'] );
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$platform = (string) clean_str( $_GET['platform'] );
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$binaryCompileDate = (string) clean_str( $_GET['binaryCompileDate'] );
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if ( isset( $_GET['privacyPlease'] ) ) {
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$privacyPlease = (int) $_GET['privacyPlease'];
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}
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else
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{
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$privacyPlease = 0;
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}
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// game info:
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$serverTitle = (string) clean_str( $_GET['serverTitle'] );
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$remote_ip = (string) clean_str( $_SERVER['REMOTE_ADDR'] );
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// If the clients' IP address belongs to a RFC1918 IP range...
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if ( strncmp( $remote_ip, get_localsubnet_ip_prefix(), strlen( get_localsubnet_ip_prefix() ) ) == 0 )
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{
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// ...then replace it by the master servers' public IP address.
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$remote_ip = get_external_ip();
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}
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$service_port = (int) clean_str( $_GET['externalconnectport'] );
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// If the game server port was not transmitted...
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if ( $service_port == '' || $service_port == 0 )
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{
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// ..then assume the default port
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$service_port = 61357;
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// ... alternatively, refuse such servers
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/*
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header( 'Content-Type: text/plain; charset=utf-8' );
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die( 'Invalid external connect port.');
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*/
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}
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// game setup info:
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$tech = (string) clean_str( $_GET['tech'] );
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$map = (string) clean_str( $_GET['map'] );
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$tileset = (string) clean_str( $_GET['tileset'] );
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$activeSlots = (int) clean_str( $_GET['activeSlots'] );
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$networkSlots = (int) clean_str( $_GET['networkSlots'] );
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$connectedClients = (int) clean_str( $_GET['connectedClients'] );
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$status = 0;
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if(isset($_GET["gameStatus"])) {
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$status = (int) clean_str( $_GET['gameStatus'] );
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}
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$gameCmd = "";
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if(isset($_GET["gameCmd"])) {
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$gameCmd = (string) clean_str( $_GET['gameCmd'] );
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}
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define( 'DB_LINK', db_connect() );
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// consider replacing this by a cron job
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cleanupServerList();
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$gameUUID = "";
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$whereClause = 'ip=\'' . mysql_real_escape_string( $remote_ip ) . '\' && externalServerPort=\'' . mysql_real_escape_string( $service_port ) . '\';';
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if ( isset( $_GET['gameUUID'] ) ) {
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$gameUUID = (string) clean_str( $_GET['gameUUID'] );
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$whereClause = 'gameUUID=\'' . mysql_real_escape_string( $gameUUID ) . '\';';
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}
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// echo '#1 ' . $whereClause;
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$server_in_db = @mysql_query( 'SELECT ip, externalServerPort FROM glestserver WHERE ' . $whereClause );
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$server = @mysql_fetch_row( $server_in_db );
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// Representation starts here (but it should really be starting much later, there is way too much logic behind this point)
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header( 'Content-Type: text/plain; charset=utf-8' );
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if ( (version_compare($glestVersion,"v3.4.0-dev","<") && $connectedClients == $networkSlots) || $gameCmd == "gameOver") // game servers' slots are all full
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{
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if($gameCmd == "gameOver" && $gameUUID != "")
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{
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// update database info on this game server; no checks are performed
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mysql_query( 'UPDATE glestserver SET ' .
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'glestVersion=\'' . mysql_real_escape_string( $glestVersion ) . '\', ' .
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'platform=\'' . mysql_real_escape_string( $platform ) . '\', ' .
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'binaryCompileDate=\'' . mysql_real_escape_string( $binaryCompileDate ) . '\', ' .
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'serverTitle=\'' . mysql_real_escape_string( $serverTitle ) . '\', ' .
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'tech=\'' . mysql_real_escape_string( $tech ) . '\', ' .
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'map=\'' . mysql_real_escape_string( $map ) . '\', ' .
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'tileset=\'' . mysql_real_escape_string( $tileset ) . '\', ' .
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'activeSlots=\'' . mysql_real_escape_string( $activeSlots ) . '\', ' .
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'networkSlots=\'' . mysql_real_escape_string( $networkSlots ) . '\', ' .
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'connectedClients=\'' . mysql_real_escape_string( $connectedClients ) . '\', ' .
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'externalServerPort=\''. mysql_real_escape_string( $service_port ) . '\', ' .
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'status=\'' . mysql_real_escape_string( $status ) . '\', ' .
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'lasttime=' . 'now()' . ' ' .
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'WHERE ' . $whereClause);
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}
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else
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{
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// delete server; no checks are performed
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mysql_query( 'DELETE FROM glestserver WHERE ' . $whereClause );
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}
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echo 'OK' ;
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} // game in progress
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else
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{
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$game_host_ip = $server[0];
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$game_host_port = $server[1];
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if ( $gameUUID != "" ) {
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$server_in_db_not_timedout = @mysql_query( 'DELETE FROM glestserver WHERE ip=\'' .
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mysql_real_escape_string( $remote_ip ) . '\' AND externalServerPort=\'' .
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mysql_real_escape_string( $service_port ) . '\' AND gameUUID <> \'' .
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mysql_real_escape_string( $gameUUID ) . '\' AND status in (0,1,2);' );
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}
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if ( ($remote_ip == $game_host_ip && $service_port == $game_host_port) || $status == 2 ) // this server is contained in the database
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{
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if ( $remote_ip == $game_host_ip && $service_port == $game_host_port)
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{
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// update database info on this game server; no checks are performed
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mysql_query( 'UPDATE glestserver SET ' .
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'glestVersion=\'' . mysql_real_escape_string( $glestVersion ) . '\', ' .
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'platform=\'' . mysql_real_escape_string( $platform ) . '\', ' .
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'binaryCompileDate=\'' . mysql_real_escape_string( $binaryCompileDate ) . '\', ' .
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'serverTitle=\'' . mysql_real_escape_string( $serverTitle ) . '\', ' .
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'tech=\'' . mysql_real_escape_string( $tech ) . '\', ' .
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'map=\'' . mysql_real_escape_string( $map ) . '\', ' .
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'tileset=\'' . mysql_real_escape_string( $tileset ) . '\', ' .
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'activeSlots=\'' . mysql_real_escape_string( $activeSlots ) . '\', ' .
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'networkSlots=\'' . mysql_real_escape_string( $networkSlots ) . '\', ' .
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'connectedClients=\'' . mysql_real_escape_string( $connectedClients ) . '\', ' .
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'externalServerPort=\''. mysql_real_escape_string( $service_port ) . '\', ' .
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'status=\'' . mysql_real_escape_string( $status ) . '\', ' .
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'lasttime=' . 'now()' . ' ' .
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'WHERE ' . $whereClause);
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//updateServer($remote_ip, $service_port, $serverTitle, $connectedClients, $networkSlots);
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echo 'OK';
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}
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else if ($status == 2)
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{
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if ( extension_loaded('geoip') ) {
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if ( $privacyPlease == 0 )
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{
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$country = geoip_country_code_by_name( $remote_ip );
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}
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else
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{
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$country = '';
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}
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}
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// cleanup old entrys with same remote port and ip
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// I hope this fixes those double entrys of servers
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mysql_query( 'DELETE FROM glestserver WHERE '. $whereClause );
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// insert new entry
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mysql_query( 'INSERT INTO glestserver SET ' .
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'glestVersion=\'' . mysql_real_escape_string( $glestVersion ) . '\', ' .
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'platform=\'' . mysql_real_escape_string( $platform ) . '\', ' .
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'binaryCompileDate=\'' . mysql_real_escape_string( $binaryCompileDate ) . '\', ' .
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'serverTitle=\'' . mysql_real_escape_string( $serverTitle ) . '\', ' .
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'ip=\'' . mysql_real_escape_string( $remote_ip ) . '\', ' .
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'tech=\'' . mysql_real_escape_string( $tech ) . '\', ' .
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'map=\'' . mysql_real_escape_string( $map ) . '\', ' .
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'tileset=\'' . mysql_real_escape_string( $tileset ) . '\', ' .
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'activeSlots=\'' . mysql_real_escape_string( $activeSlots ) . '\', ' .
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'networkSlots=\'' . mysql_real_escape_string( $networkSlots ) . '\', ' .
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'connectedClients=\'' . mysql_real_escape_string( $connectedClients ) . '\', ' .
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'externalServerPort=\''. mysql_real_escape_string( $service_port ) . '\', ' .
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'country=\'' . mysql_real_escape_string( $country ) . '\', ' .
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'status=\'' . mysql_real_escape_string( $status ) . '\', ' .
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'gameUUID=\'' . mysql_real_escape_string( $gameUUID ) . '\';'
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);
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echo 'OK';
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}
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}
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else // this game server is not listed in the database, yet
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{ // check whether this game server is available from the Internet; if it is, add it to the database
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sleep(8); // was 3
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$socket = socket_create( AF_INET, SOCK_STREAM, SOL_TCP );
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if ( $socket < 0 ) {
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echo 'socket_create() failed.' . PHP_EOL . ' Reason: ' . socket_strerror( $socket ) . PHP_EOL;
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}
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socket_set_nonblock( $socket )
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or die( 'Unable to set nonblock on socket.' );
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$timeout = 10; //timeout in seconds
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echo 'Trying to connect to \'' . $remote_ip . '\' using port \'' . $service_port . '\'...' . PHP_EOL;
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$canconnect = true;
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$time = time();
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error_reporting( E_ERROR );
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for ( ; !@socket_connect( $socket, $remote_ip, $service_port ); )
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{
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$socket_last_error = socket_last_error( $socket );
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if ( $socket_last_error == 115 || $socket_last_error == 114)
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{
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if ( ( time() - $time ) >= $timeout )
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{
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$canconnect = false;
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echo 'socket_connect() failed.' . PHP_EOL . ' Reason: (' . $socket_last_error . ') ' . socket_strerror( $socket_last_error ) . PHP_EOL;
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break;
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}
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sleep( 1 );
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continue;
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}
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// for answers on this see: http://bobobobo.wordpress.com/2008/11/09/resolving-winsock-error-10035-wsaewouldblock/
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else if($socket_last_error == 10035 || $socket_last_error == 10037) {
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break;
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}
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$canconnect = false;
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echo 'socket_connect() failed.' . PHP_EOL . ' Reason: (' . $socket_last_error . ') ' . socket_strerror( $socket_last_error ) . PHP_EOL;
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break;
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}
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socket_set_block( $socket )
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or die( 'Unable to set block on socket.' );
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//echo "and now read ....";
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//$buf = socket_read($socket, 161);
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//echo $buf ."\n";
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// Make sure its a glest server connecting
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//
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// struct Data{
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// int8 messageType;
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// NetworkString<maxVersionStringSize> versionString;
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// NetworkString<maxNameSize> name;
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// int16 playerIndex;
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// int8 gameState;
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// };
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if ( $canconnect == true ) {
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$data_from_server = socket_read( $socket, 1 );
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}
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socket_close( $socket );
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error_reporting( E_ALL );
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if ( $canconnect == false )
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{
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echo 'wrong router setup';
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}
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/*
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else if ( $data_from_server != 1 ) // insert serious verification here
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{
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echo "invalid handshake!";
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}
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*/
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else // connection to game server succeeded, protocol verification succeeded
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{ // add this game server to the database
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if ( extension_loaded('geoip') ) {
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if ( $privacyPlease == 0 )
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{
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$country = geoip_country_code_by_name( $remote_ip );
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}
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else
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{
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$country = '';
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}
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}
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// cleanup old entrys with same remote port and ip
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// I hope this fixes those double entrys of servers
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mysql_query( 'DELETE FROM glestserver WHERE '. $whereClause );
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// insert new entry
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mysql_query( 'INSERT INTO glestserver SET ' .
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'glestVersion=\'' . mysql_real_escape_string( $glestVersion ) . '\', ' .
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'platform=\'' . mysql_real_escape_string( $platform ) . '\', ' .
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'binaryCompileDate=\'' . mysql_real_escape_string( $binaryCompileDate ) . '\', ' .
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'serverTitle=\'' . mysql_real_escape_string( $serverTitle ) . '\', ' .
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'ip=\'' . mysql_real_escape_string( $remote_ip ) . '\', ' .
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'tech=\'' . mysql_real_escape_string( $tech ) . '\', ' .
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'map=\'' . mysql_real_escape_string( $map ) . '\', ' .
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'tileset=\'' . mysql_real_escape_string( $tileset ) . '\', ' .
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'activeSlots=\'' . mysql_real_escape_string( $activeSlots ) . '\', ' .
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'networkSlots=\'' . mysql_real_escape_string( $networkSlots ) . '\', ' .
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'connectedClients=\'' . mysql_real_escape_string( $connectedClients ) . '\', ' .
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'externalServerPort=\''. mysql_real_escape_string( $service_port ) . '\', ' .
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'country=\'' . mysql_real_escape_string( $country ) . '\', ' .
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'status=\'' . mysql_real_escape_string( $status ) . '\', ' .
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'gameUUID=\'' . mysql_real_escape_string( $gameUUID ) . '\';'
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);
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echo 'OK';
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//addLatestServer($remote_ip, $service_port, $serverTitle, $connectedClients, $networkSlots);
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}
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}
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}
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db_disconnect( DB_LINK );
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?>
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