mirror of
https://github.com/pmmp/PocketMine-MP.git
synced 2025-05-25 23:07:09 +00:00
113 lines
3.5 KiB
PHP
113 lines
3.5 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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declare(strict_types=1);
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namespace pocketmine\entity;
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use Ahc\Json\Comment as CommentedJsonDecoder;
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use pocketmine\utils\Limits;
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use function implode;
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use function in_array;
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use function json_encode;
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use function strlen;
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use const JSON_THROW_ON_ERROR;
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final class Skin{
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public const ACCEPTED_SKIN_SIZES = [
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64 * 32 * 4,
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64 * 64 * 4,
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128 * 128 * 4
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];
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private string $skinId;
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private string $skinData;
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private string $capeData;
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private string $geometryName;
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private string $geometryData;
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private static function checkLength(string $string, string $name, int $maxLength) : void{
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if(strlen($string) > $maxLength){
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throw new InvalidSkinException("$name must be at most $maxLength bytes, but have " . strlen($string) . " bytes");
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}
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}
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public function __construct(string $skinId, string $skinData, string $capeData = "", string $geometryName = "", string $geometryData = ""){
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self::checkLength($skinId, "Skin ID", Limits::INT16_MAX);
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self::checkLength($geometryName, "Geometry name", Limits::INT16_MAX);
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self::checkLength($geometryData, "Geometry data", Limits::INT32_MAX);
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if($skinId === ""){
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throw new InvalidSkinException("Skin ID must not be empty");
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}
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$len = strlen($skinData);
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if(!in_array($len, self::ACCEPTED_SKIN_SIZES, true)){
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throw new InvalidSkinException("Invalid skin data size $len bytes (allowed sizes: " . implode(", ", self::ACCEPTED_SKIN_SIZES) . ")");
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}
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if($capeData !== "" && strlen($capeData) !== 8192){
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throw new InvalidSkinException("Invalid cape data size " . strlen($capeData) . " bytes (must be exactly 8192 bytes)");
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}
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if($geometryData !== ""){
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try{
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$decodedGeometry = (new CommentedJsonDecoder())->decode($geometryData);
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}catch(\RuntimeException $e){
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throw new InvalidSkinException("Invalid geometry data: " . $e->getMessage(), 0, $e);
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}
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/*
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* Hack to cut down on network overhead due to skins, by un-pretty-printing geometry JSON.
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*
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* Mojang, some stupid reason, send every single model for every single skin in the selected skin-pack.
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* Not only that, they are pretty-printed.
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* TODO: find out what model crap can be safely dropped from the packet (unless it gets fixed first)
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*/
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$geometryData = json_encode($decodedGeometry, JSON_THROW_ON_ERROR);
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}
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$this->skinId = $skinId;
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$this->skinData = $skinData;
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$this->capeData = $capeData;
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$this->geometryName = $geometryName;
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$this->geometryData = $geometryData;
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}
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public function getSkinId() : string{
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return $this->skinId;
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}
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public function getSkinData() : string{
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return $this->skinData;
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}
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public function getCapeData() : string{
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return $this->capeData;
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}
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public function getGeometryName() : string{
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return $this->geometryName;
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}
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public function getGeometryData() : string{
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return $this->geometryData;
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}
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}
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