141 lines
3.3 KiB
PHP
141 lines
3.3 KiB
PHP
<?php
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/**
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* @author Pavel Djundik <sourcequery@xpaw.me>
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*
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* @link https://xpaw.me
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* @link https://github.com/xPaw/PHP-Source-Query
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*
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* @license GNU Lesser General Public License, version 2.1
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*
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* @internal
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*/
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namespace xPaw\SourceQuery;
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use xPaw\SourceQuery\Exception\AuthenticationException;
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/**
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* Class GoldSourceRcon
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*
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* @package xPaw\SourceQuery
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*
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* @uses xPaw\SourceQuery\Exception\AuthenticationException
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*/
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class GoldSourceRcon
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{
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/**
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* Points to socket class
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*
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* @var Socket
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*/
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private $Socket;
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private $RconPassword;
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private $RconRequestId;
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private $RconChallenge;
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public function __construct( $Socket )
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{
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$this->Socket = $Socket;
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}
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public function Close( )
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{
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$this->RconChallenge = 0;
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$this->RconRequestId = 0;
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$this->RconPassword = 0;
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}
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public function Open( )
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{
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//
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}
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public function Write( $Header, $String = '' )
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{
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$Command = Pack( 'cccca*', 0xFF, 0xFF, 0xFF, 0xFF, $String );
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$Length = StrLen( $Command );
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return $Length === FWrite( $this->Socket->Socket, $Command, $Length );
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}
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/**
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* @param int $Length
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* @throws AuthenticationException
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* @return bool
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*/
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public function Read( $Length = 1400 )
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{
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// GoldSource RCON has same structure as Query
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$Buffer = $this->Socket->Read( );
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if( $Buffer->GetByte( ) !== SourceQuery::S2A_RCON )
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{
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throw new InvalidPacketException( 'Invalid rcon response.', InvalidPacketException::PACKET_HEADER_MISMATCH );
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}
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$Buffer = $Buffer->Get( );
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$Trimmed = Trim( $Buffer );
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if( $Trimmed === 'Bad rcon_password.' )
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{
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throw new AuthenticationException( $Trimmed, AuthenticationException::BAD_PASSWORD );
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}
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else if( $Trimmed === 'You have been banned from this server.' )
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{
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throw new AuthenticationException( $Trimmed, AuthenticationException::BANNED );
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}
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$ReadMore = false;
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// There is no indentifier of the end, so we just need to continue reading
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// TODO: Needs to be looked again, it causes timeouts
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do
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{
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$this->Socket->Read( );
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$ReadMore = $Buffer->Remaining( ) > 0 && $Buffer->GetByte( ) === SourceQuery::S2A_RCON;
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if( $ReadMore )
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{
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$Packet = $Buffer->Get( );
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$Buffer .= SubStr( $Packet, 0, -2 );
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// Let's assume if this packet is not long enough, there are no more after this one
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$ReadMore = StrLen( $Packet ) > 1000; // use 1300?
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}
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}
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while( $ReadMore );
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$Buffer->Set( Trim( $Buffer ) );
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}
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public function Command( $Command )
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{
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if( !$this->RconChallenge )
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{
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throw new AuthenticationException( 'Tried to execute a RCON command before successful authorization.', AuthenticationException::BAD_PASSWORD );
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}
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$this->Write( 0, 'rcon ' . $this->RconChallenge . ' "' . $this->RconPassword . '" ' . $Command . "\0" );
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$Buffer = $this->Read( );
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return $Buffer->Get( );
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}
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public function Authorize( $Password )
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{
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$this->RconPassword = $Password;
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$this->Write( 0, 'challenge rcon' );
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$Buffer = $this->Socket->Read( );
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if( $Buffer->Get( 14 ) !== 'challenge rcon' )
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{
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throw new AuthenticationException( 'Failed to get RCON challenge.', AuthenticationException::BAD_PASSWORD );
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}
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$this->RconChallenge = Trim( $Buffer->Get( ) );
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}
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}
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