mirror of
https://github.com/pmmp/PocketMine-MP.git
synced 2025-07-01 15:49:54 +00:00
367 lines
10 KiB
PHP
367 lines
10 KiB
PHP
<?php
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/**
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*
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* ____ _ _ __ __ _ __ __ ____
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* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
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* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
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* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
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* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* @author PocketMine Team
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* @link http://www.pocketmine.net/
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*
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*
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*/
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class RakNetParser{
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private $buffer;
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private $offset;
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public $packet;
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public function __construct(&$buffer){
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$this->buffer =& $buffer;
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$this->offset = 0;
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if(strlen($this->buffer) > 0){
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$this->parse();
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}else{
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$this->packet = false;
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}
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}
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private function get($len){
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if($len <= 0){
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$this->offset = strlen($this->buffer) - 1;
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return "";
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}
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if($len === true){
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return substr($this->buffer, $this->offset);
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}
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$this->offset += $len;
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return substr($this->buffer, $this->offset - $len, $len);
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}
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private function getLong($unsigned = false){
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return Utils::readLong($this->get(8), $unsigned);
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}
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private function getInt($unsigned = false){
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return Utils::readInt($this->get(4), $unsigned);
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}
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private function getShort($unsigned = false){
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return Utils::readShort($this->get(2), $unsigned);
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}
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private function getLTriad(){
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return Utils::readTriad(strrev($this->get(3)));
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}
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private function getByte(){
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return ord($this->get(1));
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}
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private function feof(){
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return !isset($this->buffer{$this->offset});
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}
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private function parse(){
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$this->packet = new RakNetPacket(ord($this->get(1)));
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$this->packet->buffer =& $this->buffer;
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$this->packet->length = strlen($this->buffer);
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switch($this->packet->pid()){
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case RakNetInfo::UNCONNECTED_PING:
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case RakNetInfo::UNCONNECTED_PING_OPEN_CONNECTIONS:
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$this->packet->pingID = $this->getLong();
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$this->offset += 16; //Magic
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break;
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case RakNetInfo::OPEN_CONNECTION_REQUEST_1:
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$this->offset += 16; //Magic
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$this->packet->structure = $this->getByte();
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$this->packet->mtuSize = strlen($this->get(true));
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break;
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case RakNetInfo::OPEN_CONNECTION_REQUEST_2:
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$this->offset += 16; //Magic
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$this->packet->security = $this->get(5);
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$this->packet->port = $this->getShort(false);
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$this->packet->mtuSize = $this->getShort(false);
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$this->packet->clientID = $this->getLong();
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break;
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case RakNetInfo::DATA_PACKET_0:
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case RakNetInfo::DATA_PACKET_1:
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case RakNetInfo::DATA_PACKET_2:
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case RakNetInfo::DATA_PACKET_3:
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case RakNetInfo::DATA_PACKET_4:
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case RakNetInfo::DATA_PACKET_5:
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case RakNetInfo::DATA_PACKET_6:
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case RakNetInfo::DATA_PACKET_7:
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case RakNetInfo::DATA_PACKET_8:
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case RakNetInfo::DATA_PACKET_9:
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case RakNetInfo::DATA_PACKET_A:
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case RakNetInfo::DATA_PACKET_B:
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case RakNetInfo::DATA_PACKET_C:
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case RakNetInfo::DATA_PACKET_D:
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case RakNetInfo::DATA_PACKET_E:
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case RakNetInfo::DATA_PACKET_F:
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$this->packet->seqNumber = $this->getLTriad();
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$this->packet->data = array();
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while(!$this->feof() and ($pk = $this->parseDataPacket()) instanceof RakNetDataPacket){
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$this->packet->data[] = $pk;
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}
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break;
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case RakNetInfo::NACK:
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case RakNetInfo::ACK:
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$count = $this->getShort();
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$this->packet->packets = array();
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for($i = 0; $i < $count and !$this->feof(); ++$i){
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if($this->getByte() === 0){
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$start = $this->getLTriad();
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$end = $this->getLTriad();
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if(($end - $start) > 4096){
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$end = $start + 4096;
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}
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for($c = $start; $c <= $end; ++$c){
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$this->packet->packets[] = $c;
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}
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}else{
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$this->packet->packets[] = $this->getLTriad();
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}
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}
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break;
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default:
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$this->packet = false;
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break;
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}
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}
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private function parseDataPacket(){
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$packetFlags = $this->getByte();
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$reliability = ($packetFlags & 0b11100000) >> 5;
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$hasSplit = ($packetFlags & 0b00010000) > 0;
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$length = (int) ceil($this->getShort() / 8);
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if($reliability === 2
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or $reliability === 3
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or $reliability === 4
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or $reliability === 6
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or $reliability === 7){
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$messageIndex = $this->getLTriad();
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}else{
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$messageIndex = false;
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}
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if($reliability === 1
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or $reliability === 3
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or $reliability === 4
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or $reliability === 7){
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$orderIndex = $this->getLTriad();
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$orderChannel = $this->getByte();
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}else{
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$orderIndex = false;
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$orderChannel = false;
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}
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if($hasSplit == true){
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$splitCount = $this->getInt();
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$splitID = $this->getShort();
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$splitIndex = $this->getInt();
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}else{
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$splitCount = false;
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$splitID = false;
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$splitIndex = false;
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}
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if($length <= 0
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or $orderChannel >= 32
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or ($hasSplit === true and $splitIndex >= $splitCount)){
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return false;
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}else{
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$pid = $this->getByte();
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$buffer = $this->get($length - 1);
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if(strlen($buffer) < ($length - 1)){
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return false;
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}
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switch($pid){
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case ProtocolInfo::PING_PACKET:
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$data = new PingPacket;
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break;
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case ProtocolInfo::PONG_PACKET:
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$data = new PongPacket;
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break;
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case ProtocolInfo::CLIENT_CONNECT_PACKET:
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$data = new ClientConnectPacket;
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break;
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case ProtocolInfo::SERVER_HANDSHAKE_PACKET:
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$data = new ServerHandshakePacket;
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break;
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case ProtocolInfo::DISCONNECT_PACKET:
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$data = new DisconnectPacket;
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break;
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case ProtocolInfo::LOGIN_PACKET:
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$data = new LoginPacket;
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break;
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case ProtocolInfo::LOGIN_STATUS_PACKET:
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$data = new LoginStatusPacket;
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break;
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case ProtocolInfo::READY_PACKET:
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$data = new ReadyPacket;
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break;
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case ProtocolInfo::MESSAGE_PACKET:
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$data = new MessagePacket;
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break;
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case ProtocolInfo::SET_TIME_PACKET:
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$data = new SetTimePacket;
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break;
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case ProtocolInfo::START_GAME_PACKET:
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$data = new StartGamePacket;
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break;
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case ProtocolInfo::ADD_MOB_PACKET:
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$data = new AddMobPacket;
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break;
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case ProtocolInfo::ADD_PLAYER_PACKET:
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$data = new AddPlayerPacket;
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break;
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case ProtocolInfo::REMOVE_PLAYER_PACKET:
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$data = new RemovePlayerPacket;
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break;
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case ProtocolInfo::ADD_ENTITY_PACKET:
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$data = new AddEntityPacket;
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break;
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case ProtocolInfo::REMOVE_ENTITY_PACKET:
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$data = new RemoveEntityPacket;
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break;
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case ProtocolInfo::ADD_ITEM_ENTITY_PACKET:
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$data = new AddItemEntityPacket;
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break;
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case ProtocolInfo::TAKE_ITEM_ENTITY_PACKET:
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$data = new TakeItemEntityPacket;
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break;
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case ProtocolInfo::MOVE_ENTITY_PACKET:
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$data = new MoveEntityPacket;
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break;
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case ProtocolInfo::MOVE_ENTITY_PACKET_POSROT:
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$data = new MoveEntityPacket_PosRot;
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break;
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case ProtocolInfo::ROTATE_HEAD_PACKET:
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$data = new RotateHeadPacket;
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break;
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case ProtocolInfo::MOVE_PLAYER_PACKET:
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$data = new MovePlayerPacket;
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break;
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case ProtocolInfo::REMOVE_BLOCK_PACKET:
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$data = new RemoveBlockPacket;
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break;
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case ProtocolInfo::UPDATE_BLOCK_PACKET:
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$data = new UpdateBlockPacket;
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break;
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case ProtocolInfo::ADD_PAINTING_PACKET:
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$data = new AddPaintingPacket;
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break;
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case ProtocolInfo::EXPLODE_PACKET:
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$data = new ExplodePacket;
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break;
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case ProtocolInfo::LEVEL_EVENT_PACKET:
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$data = new LevelEventPacket;
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break;
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case ProtocolInfo::TILE_EVENT_PACKET:
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$data = new TileEventPacket;
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break;
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case ProtocolInfo::ENTITY_EVENT_PACKET:
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$data = new EntityEventPacket;
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break;
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case ProtocolInfo::REQUEST_CHUNK_PACKET:
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$data = new RequestChunkPacket;
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break;
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case ProtocolInfo::CHUNK_DATA_PACKET:
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$data = new ChunkDataPacket;
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break;
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case ProtocolInfo::PLAYER_EQUIPMENT_PACKET:
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$data = new PlayerEquipmentPacket;
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break;
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case ProtocolInfo::PLAYER_ARMOR_EQUIPMENT_PACKET:
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$data = new PlayerArmorEquipmentPacket;
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break;
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case ProtocolInfo::INTERACT_PACKET:
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$data = new InteractPacket;
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break;
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case ProtocolInfo::USE_ITEM_PACKET:
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$data = new UseItemPacket;
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break;
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case ProtocolInfo::PLAYER_ACTION_PACKET:
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$data = new PlayerActionPacket;
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break;
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case ProtocolInfo::HURT_ARMOR_PACKET:
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$data = new HurtArmorPacket;
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break;
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case ProtocolInfo::SET_ENTITY_DATA_PACKET:
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$data = new SetEntityDataPacket;
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break;
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case ProtocolInfo::SET_ENTITY_MOTION_PACKET:
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$data = new SetEntityMotionPacket;
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break;
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case ProtocolInfo::SET_HEALTH_PACKET:
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$data = new SetHealthPacket;
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break;
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case ProtocolInfo::SET_SPAWN_POSITION_PACKET:
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$data = new SetSpawnPositionPacket;
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break;
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case ProtocolInfo::ANIMATE_PACKET:
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$data = new AnimatePacket;
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break;
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case ProtocolInfo::RESPAWN_PACKET:
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$data = new RespawnPacket;
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break;
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case ProtocolInfo::SEND_INVENTORY_PACKET:
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$data = new SendInventoryPacket;
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break;
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case ProtocolInfo::DROP_ITEM_PACKET:
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$data = new DropItemPacket;
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break;
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case ProtocolInfo::CONTAINER_OPEN_PACKET:
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$data = new ContainerOpenPacket;
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break;
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case ProtocolInfo::CONTAINER_CLOSE_PACKET:
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$data = new ContainerClosePacket;
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break;
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case ProtocolInfo::CONTAINER_SET_SLOT_PACKET:
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$data = new ContainerSetSlotPacket;
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break;
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case ProtocolInfo::CONTAINER_SET_DATA_PACKET:
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$data = new ContainerSetDataPacket;
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break;
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case ProtocolInfo::CONTAINER_SET_CONTENT_PACKET:
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$data = new ContainerSetContentPacket;
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break;
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case ProtocolInfo::CHAT_PACKET:
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$data = new ChatPacket;
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break;
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case ProtocolInfo::ADVENTURE_SETTINGS_PACKET:
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$data = new AdventureSettingsPacket;
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break;
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case ProtocolInfo::ENTITY_DATA_PACKET:
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$data = new EntityDataPacket;
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break;
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default:
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$data = new UnknownPacket();
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$data->packetID = $pid;
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break;
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}
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$data->reliability = $reliability;
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$data->hasSplit = $hasSplit;
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$data->messageIndex = $messageIndex;
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$data->orderIndex = $orderIndex;
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$data->orderChannel = $orderChannel;
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$data->splitCount = $splitCount;
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$data->splitID = $splitID;
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$data->splitIndex = $splitIndex;
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$data->setBuffer($buffer);
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}
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return $data;
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}
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} |