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139 lines
3.6 KiB
139 lines
3.6 KiB
<?php
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declare(strict_types=1);
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/**
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* @author Pavel Djundik
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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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use xPaw\SourceQuery\Exception\InvalidPacketException;
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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 AuthenticationException
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* @uses InvalidPacketException
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*/
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final 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 BaseSocket
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*/
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private $Socket;
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private string $RconPassword = '';
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private string $RconChallenge = '';
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public function __construct(BaseSocket $Socket)
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{
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$this->Socket = $Socket;
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}
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public function Close(): void
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{
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$this->RconChallenge = '';
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$this->RconPassword = '';
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}
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public function Open(): void
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{
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//
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}
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public function Write(int $Header, string $String = ''): bool
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{
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$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 Buffer
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*/
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public function Read(int $Length = 1400): Buffer
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{
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// GoldSource RCON has same structure as Query
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$Buffer = $this->Socket->Read();
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$StringBuffer = '';
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$ReadMore = false;
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// There is no indentifier of the end, so we just need to continue reading
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do {
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$ReadMore = $Buffer->Remaining() > 0;
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if ($ReadMore) {
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if ($Buffer->GetByte() !== SourceQuery::S2A_RCON) {
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throw new InvalidPacketException('Invalid rcon response.', InvalidPacketException::PACKET_HEADER_MISMATCH);
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}
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$Packet = $Buffer->Get();
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$StringBuffer .= $Packet;
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//$StringBuffer .= 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($Packet) > 1000; // use 1300?
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if ($ReadMore) {
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$Buffer = $this->Socket->Read();
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}
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}
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} while ($ReadMore);
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$Trimmed = trim($StringBuffer);
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if ($Trimmed === 'Bad rcon_password.') {
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throw new AuthenticationException($Trimmed, AuthenticationException::BAD_PASSWORD);
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} elseif ($Trimmed === 'You have been banned from this server.') {
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throw new AuthenticationException($Trimmed, AuthenticationException::BANNED);
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}
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$Buffer->Set($Trimmed);
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return $Buffer;
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}
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public function Command(string $Command): string
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{
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if (!$this->RconChallenge) {
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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(string $Password): void
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{
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$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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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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