mirror of
https://github.com/pmmp/PocketMine-MP.git
synced 2025-06-11 22:15:30 +00:00
d3add78d3e
Support for more advanced stuff like NBT copying wasn't added in this PR, as the NBT used by PM is currently an inconsistent mess and doesn't play nice with vanilla. In the interests of avoiding this mess propagating, it's been left for another time. Adds PlayerEntityPickEvent a la PlayerBlockPickEvent and Entity->getPickedItem().
1031 lines
41 KiB
PHP
1031 lines
41 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\network\mcpe\handler;
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use pocketmine\block\BaseSign;
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use pocketmine\block\Lectern;
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use pocketmine\block\tile\Sign;
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use pocketmine\block\utils\SignText;
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use pocketmine\entity\animation\ConsumingItemAnimation;
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use pocketmine\entity\Attribute;
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use pocketmine\entity\InvalidSkinException;
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use pocketmine\event\player\PlayerEditBookEvent;
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use pocketmine\inventory\transaction\action\DropItemAction;
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use pocketmine\inventory\transaction\InventoryTransaction;
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use pocketmine\inventory\transaction\TransactionBuilder;
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use pocketmine\inventory\transaction\TransactionCancelledException;
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use pocketmine\inventory\transaction\TransactionValidationException;
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use pocketmine\item\VanillaItems;
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use pocketmine\item\WritableBook;
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use pocketmine\item\WritableBookPage;
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use pocketmine\item\WrittenBook;
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use pocketmine\math\Facing;
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use pocketmine\math\Vector3;
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use pocketmine\nbt\tag\CompoundTag;
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use pocketmine\nbt\tag\StringTag;
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use pocketmine\network\mcpe\InventoryManager;
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use pocketmine\network\mcpe\NetworkSession;
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use pocketmine\network\mcpe\protocol\ActorEventPacket;
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use pocketmine\network\mcpe\protocol\ActorPickRequestPacket;
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use pocketmine\network\mcpe\protocol\AnimatePacket;
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use pocketmine\network\mcpe\protocol\BlockActorDataPacket;
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use pocketmine\network\mcpe\protocol\BlockPickRequestPacket;
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use pocketmine\network\mcpe\protocol\BookEditPacket;
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use pocketmine\network\mcpe\protocol\BossEventPacket;
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use pocketmine\network\mcpe\protocol\CommandBlockUpdatePacket;
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use pocketmine\network\mcpe\protocol\CommandRequestPacket;
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use pocketmine\network\mcpe\protocol\ContainerClosePacket;
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use pocketmine\network\mcpe\protocol\EmotePacket;
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use pocketmine\network\mcpe\protocol\InteractPacket;
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use pocketmine\network\mcpe\protocol\InventoryTransactionPacket;
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use pocketmine\network\mcpe\protocol\ItemStackRequestPacket;
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use pocketmine\network\mcpe\protocol\ItemStackResponsePacket;
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use pocketmine\network\mcpe\protocol\LabTablePacket;
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use pocketmine\network\mcpe\protocol\LecternUpdatePacket;
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use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
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use pocketmine\network\mcpe\protocol\LevelSoundEventPacketV1;
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use pocketmine\network\mcpe\protocol\MapInfoRequestPacket;
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use pocketmine\network\mcpe\protocol\MobArmorEquipmentPacket;
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use pocketmine\network\mcpe\protocol\MobEquipmentPacket;
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use pocketmine\network\mcpe\protocol\ModalFormResponsePacket;
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use pocketmine\network\mcpe\protocol\MovePlayerPacket;
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use pocketmine\network\mcpe\protocol\NetworkStackLatencyPacket;
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use pocketmine\network\mcpe\protocol\PlayerActionPacket;
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use pocketmine\network\mcpe\protocol\PlayerAuthInputPacket;
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use pocketmine\network\mcpe\protocol\PlayerHotbarPacket;
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use pocketmine\network\mcpe\protocol\PlayerInputPacket;
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use pocketmine\network\mcpe\protocol\PlayerSkinPacket;
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use pocketmine\network\mcpe\protocol\RequestChunkRadiusPacket;
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use pocketmine\network\mcpe\protocol\ServerSettingsRequestPacket;
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use pocketmine\network\mcpe\protocol\SetActorMotionPacket;
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use pocketmine\network\mcpe\protocol\SetPlayerGameTypePacket;
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use pocketmine\network\mcpe\protocol\ShowCreditsPacket;
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use pocketmine\network\mcpe\protocol\SpawnExperienceOrbPacket;
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use pocketmine\network\mcpe\protocol\SubClientLoginPacket;
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use pocketmine\network\mcpe\protocol\TextPacket;
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use pocketmine\network\mcpe\protocol\types\ActorEvent;
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use pocketmine\network\mcpe\protocol\types\BlockPosition;
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use pocketmine\network\mcpe\protocol\types\inventory\ContainerIds;
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use pocketmine\network\mcpe\protocol\types\inventory\MismatchTransactionData;
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use pocketmine\network\mcpe\protocol\types\inventory\NetworkInventoryAction;
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use pocketmine\network\mcpe\protocol\types\inventory\NormalTransactionData;
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use pocketmine\network\mcpe\protocol\types\inventory\ReleaseItemTransactionData;
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use pocketmine\network\mcpe\protocol\types\inventory\stackrequest\ItemStackRequest;
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use pocketmine\network\mcpe\protocol\types\inventory\stackresponse\ItemStackResponse;
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use pocketmine\network\mcpe\protocol\types\inventory\UseItemOnEntityTransactionData;
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use pocketmine\network\mcpe\protocol\types\inventory\UseItemTransactionData;
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use pocketmine\network\mcpe\protocol\types\PlayerAction;
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use pocketmine\network\mcpe\protocol\types\PlayerAuthInputFlags;
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use pocketmine\network\mcpe\protocol\types\PlayerBlockActionStopBreak;
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use pocketmine\network\mcpe\protocol\types\PlayerBlockActionWithBlockInfo;
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use pocketmine\network\PacketHandlingException;
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use pocketmine\player\Player;
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use pocketmine\utils\AssumptionFailedError;
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use pocketmine\utils\Limits;
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use pocketmine\utils\TextFormat;
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use pocketmine\utils\Utils;
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use pocketmine\world\format\Chunk;
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use function array_push;
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use function count;
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use function fmod;
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use function get_debug_type;
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use function implode;
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use function in_array;
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use function is_infinite;
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use function is_nan;
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use function json_decode;
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use function max;
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use function mb_strlen;
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use function microtime;
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use function sprintf;
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use function str_starts_with;
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use function strlen;
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use const JSON_THROW_ON_ERROR;
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/**
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* This handler handles packets related to general gameplay.
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*/
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class InGamePacketHandler extends PacketHandler{
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private const MAX_FORM_RESPONSE_DEPTH = 2; //modal/simple will be 1, custom forms 2 - they will never contain anything other than string|int|float|bool|null
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protected float $lastRightClickTime = 0.0;
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protected ?UseItemTransactionData $lastRightClickData = null;
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protected ?Vector3 $lastPlayerAuthInputPosition = null;
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protected ?float $lastPlayerAuthInputYaw = null;
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protected ?float $lastPlayerAuthInputPitch = null;
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protected ?int $lastPlayerAuthInputFlags = null;
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public bool $forceMoveSync = false;
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protected ?string $lastRequestedFullSkinId = null;
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public function __construct(
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private Player $player,
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private NetworkSession $session,
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private InventoryManager $inventoryManager
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){}
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public function handleText(TextPacket $packet) : bool{
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if($packet->type === TextPacket::TYPE_CHAT){
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return $this->player->chat($packet->message);
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}
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return false;
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}
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public function handleMovePlayer(MovePlayerPacket $packet) : bool{
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//The client sends this every time it lands on the ground, even when using PlayerAuthInputPacket.
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//Silence the debug spam that this causes.
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return true;
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}
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private function resolveOnOffInputFlags(int $inputFlags, int $startFlag, int $stopFlag) : ?bool{
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$enabled = ($inputFlags & (1 << $startFlag)) !== 0;
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$disabled = ($inputFlags & (1 << $stopFlag)) !== 0;
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if($enabled !== $disabled){
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return $enabled;
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}
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//neither flag was set, or both were set
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return null;
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}
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public function handlePlayerAuthInput(PlayerAuthInputPacket $packet) : bool{
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$rawPos = $packet->getPosition();
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$rawYaw = $packet->getYaw();
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$rawPitch = $packet->getPitch();
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foreach([$rawPos->x, $rawPos->y, $rawPos->z, $rawYaw, $packet->getHeadYaw(), $rawPitch] as $float){
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if(is_infinite($float) || is_nan($float)){
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$this->session->getLogger()->debug("Invalid movement received, contains NAN/INF components");
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return false;
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}
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}
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if($rawYaw !== $this->lastPlayerAuthInputYaw || $rawPitch !== $this->lastPlayerAuthInputPitch){
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$this->lastPlayerAuthInputYaw = $rawYaw;
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$this->lastPlayerAuthInputPitch = $rawPitch;
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$yaw = fmod($rawYaw, 360);
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$pitch = fmod($rawPitch, 360);
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if($yaw < 0){
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$yaw += 360;
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}
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$this->player->setRotation($yaw, $pitch);
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}
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$hasMoved = $this->lastPlayerAuthInputPosition === null || !$this->lastPlayerAuthInputPosition->equals($rawPos);
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$newPos = $rawPos->subtract(0, 1.62, 0)->round(4);
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if($this->forceMoveSync && $hasMoved){
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$curPos = $this->player->getLocation();
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if($newPos->distanceSquared($curPos) > 1){ //Tolerate up to 1 block to avoid problems with client-sided physics when spawning in blocks
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$this->session->getLogger()->debug("Got outdated pre-teleport movement, received " . $newPos . ", expected " . $curPos);
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//Still getting movements from before teleport, ignore them
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return true;
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}
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// Once we get a movement within a reasonable distance, treat it as a teleport ACK and remove position lock
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$this->forceMoveSync = false;
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}
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$inputFlags = $packet->getInputFlags();
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if($inputFlags !== $this->lastPlayerAuthInputFlags){
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$this->lastPlayerAuthInputFlags = $inputFlags;
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$sneaking = $this->resolveOnOffInputFlags($inputFlags, PlayerAuthInputFlags::START_SNEAKING, PlayerAuthInputFlags::STOP_SNEAKING);
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$sprinting = $this->resolveOnOffInputFlags($inputFlags, PlayerAuthInputFlags::START_SPRINTING, PlayerAuthInputFlags::STOP_SPRINTING);
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$swimming = $this->resolveOnOffInputFlags($inputFlags, PlayerAuthInputFlags::START_SWIMMING, PlayerAuthInputFlags::STOP_SWIMMING);
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$gliding = $this->resolveOnOffInputFlags($inputFlags, PlayerAuthInputFlags::START_GLIDING, PlayerAuthInputFlags::STOP_GLIDING);
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$flying = $this->resolveOnOffInputFlags($inputFlags, PlayerAuthInputFlags::START_FLYING, PlayerAuthInputFlags::STOP_FLYING);
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$mismatch =
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($sneaking !== null && !$this->player->toggleSneak($sneaking)) |
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($sprinting !== null && !$this->player->toggleSprint($sprinting)) |
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($swimming !== null && !$this->player->toggleSwim($swimming)) |
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($gliding !== null && !$this->player->toggleGlide($gliding)) |
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($flying !== null && !$this->player->toggleFlight($flying));
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if((bool) $mismatch){
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$this->player->sendData([$this->player]);
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}
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if($packet->hasFlag(PlayerAuthInputFlags::START_JUMPING)){
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$this->player->jump();
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}
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if($packet->hasFlag(PlayerAuthInputFlags::MISSED_SWING)){
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$this->player->missSwing();
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}
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}
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if(!$this->forceMoveSync && $hasMoved){
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$this->lastPlayerAuthInputPosition = $rawPos;
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//TODO: this packet has WAYYYYY more useful information that we're not using
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$this->player->handleMovement($newPos);
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}
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$packetHandled = true;
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$blockActions = $packet->getBlockActions();
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if($blockActions !== null){
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if(count($blockActions) > 100){
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throw new PacketHandlingException("Too many block actions in PlayerAuthInputPacket");
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}
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foreach($blockActions as $k => $blockAction){
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$actionHandled = false;
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if($blockAction instanceof PlayerBlockActionStopBreak){
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$actionHandled = $this->handlePlayerActionFromData($blockAction->getActionType(), new BlockPosition(0, 0, 0), Facing::DOWN);
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}elseif($blockAction instanceof PlayerBlockActionWithBlockInfo){
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$actionHandled = $this->handlePlayerActionFromData($blockAction->getActionType(), $blockAction->getBlockPosition(), $blockAction->getFace());
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}
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if(!$actionHandled){
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$packetHandled = false;
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$this->session->getLogger()->debug("Unhandled player block action at offset $k in PlayerAuthInputPacket");
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}
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}
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}
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$useItemTransaction = $packet->getItemInteractionData();
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if($useItemTransaction !== null){
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if(count($useItemTransaction->getTransactionData()->getActions()) > 100){
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throw new PacketHandlingException("Too many actions in item use transaction");
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}
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$this->inventoryManager->setCurrentItemStackRequestId($useItemTransaction->getRequestId());
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$this->inventoryManager->addRawPredictedSlotChanges($useItemTransaction->getTransactionData()->getActions());
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if(!$this->handleUseItemTransaction($useItemTransaction->getTransactionData())){
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$packetHandled = false;
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$this->session->getLogger()->debug("Unhandled transaction in PlayerAuthInputPacket (type " . $useItemTransaction->getTransactionData()->getActionType() . ")");
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}else{
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$this->inventoryManager->syncMismatchedPredictedSlotChanges();
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}
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$this->inventoryManager->setCurrentItemStackRequestId(null);
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}
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$itemStackRequest = $packet->getItemStackRequest();
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if($itemStackRequest !== null){
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$result = $this->handleSingleItemStackRequest($itemStackRequest);
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$this->session->sendDataPacket(ItemStackResponsePacket::create([$result]));
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}
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return $packetHandled;
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}
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public function handleLevelSoundEventPacketV1(LevelSoundEventPacketV1 $packet) : bool{
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return true; //useless leftover from 1.8
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}
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public function handleActorEvent(ActorEventPacket $packet) : bool{
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if($packet->actorRuntimeId !== $this->player->getId()){
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//TODO HACK: EATING_ITEM is sent back to the server when the server sends it for other players (1.14 bug, maybe earlier)
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return $packet->actorRuntimeId === ActorEvent::EATING_ITEM;
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}
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switch($packet->eventId){
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case ActorEvent::EATING_ITEM: //TODO: ignore this and handle it server-side
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$item = $this->player->getInventory()->getItemInHand();
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if($item->isNull()){
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return false;
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}
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$this->player->broadcastAnimation(new ConsumingItemAnimation($this->player, $this->player->getInventory()->getItemInHand()));
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break;
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default:
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return false;
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}
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return true;
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}
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public function handleInventoryTransaction(InventoryTransactionPacket $packet) : bool{
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$result = true;
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if(count($packet->trData->getActions()) > 50){
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throw new PacketHandlingException("Too many actions in inventory transaction");
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}
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if(count($packet->requestChangedSlots) > 10){
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throw new PacketHandlingException("Too many slot sync requests in inventory transaction");
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}
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$this->inventoryManager->setCurrentItemStackRequestId($packet->requestId);
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$this->inventoryManager->addRawPredictedSlotChanges($packet->trData->getActions());
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if($packet->trData instanceof NormalTransactionData){
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$result = $this->handleNormalTransaction($packet->trData, $packet->requestId);
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}elseif($packet->trData instanceof MismatchTransactionData){
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$this->session->getLogger()->debug("Mismatch transaction received");
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$this->inventoryManager->requestSyncAll();
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$result = true;
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}elseif($packet->trData instanceof UseItemTransactionData){
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$result = $this->handleUseItemTransaction($packet->trData);
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}elseif($packet->trData instanceof UseItemOnEntityTransactionData){
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$result = $this->handleUseItemOnEntityTransaction($packet->trData);
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}elseif($packet->trData instanceof ReleaseItemTransactionData){
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$result = $this->handleReleaseItemTransaction($packet->trData);
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}
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$this->inventoryManager->syncMismatchedPredictedSlotChanges();
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//requestChangedSlots asks the server to always send out the contents of the specified slots, even if they
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//haven't changed. Handling these is necessary to ensure the client inventory stays in sync if the server
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//rejects the transaction. The most common example of this is equipping armor by right-click, which doesn't send
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//a legacy prediction action for the destination armor slot.
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foreach($packet->requestChangedSlots as $containerInfo){
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foreach($containerInfo->getChangedSlotIndexes() as $netSlot){
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[$windowId, $slot] = ItemStackContainerIdTranslator::translate($containerInfo->getContainerId(), $this->inventoryManager->getCurrentWindowId(), $netSlot);
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$inventoryAndSlot = $this->inventoryManager->locateWindowAndSlot($windowId, $slot);
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if($inventoryAndSlot !== null){ //trigger the normal slot sync logic
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$this->inventoryManager->onSlotChange($inventoryAndSlot[0], $inventoryAndSlot[1]);
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}
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}
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}
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$this->inventoryManager->setCurrentItemStackRequestId(null);
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return $result;
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}
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private function executeInventoryTransaction(InventoryTransaction $transaction, int $requestId) : bool{
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$this->player->setUsingItem(false);
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$this->inventoryManager->setCurrentItemStackRequestId($requestId);
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$this->inventoryManager->addTransactionPredictedSlotChanges($transaction);
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try{
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$transaction->execute();
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}catch(TransactionValidationException $e){
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$this->inventoryManager->requestSyncAll();
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$logger = $this->session->getLogger();
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$logger->debug("Invalid inventory transaction $requestId: " . $e->getMessage());
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return false;
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}catch(TransactionCancelledException){
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$this->session->getLogger()->debug("Inventory transaction $requestId cancelled by a plugin");
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return false;
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}finally{
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$this->inventoryManager->syncMismatchedPredictedSlotChanges();
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$this->inventoryManager->setCurrentItemStackRequestId(null);
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}
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return true;
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}
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private function handleNormalTransaction(NormalTransactionData $data, int $itemStackRequestId) : bool{
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//When the ItemStackRequest system is used, this transaction type is used for dropping items by pressing Q.
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//I don't know why they don't just use ItemStackRequest for that too, which already supports dropping items by
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//clicking them outside an open inventory menu, but for now it is what it is.
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//Fortunately, this means we can be much stricter about the validation criteria.
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$actionCount = count($data->getActions());
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if($actionCount > 2){
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if($actionCount > 5){
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throw new PacketHandlingException("Too many actions ($actionCount) in normal inventory transaction");
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}
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//Due to a bug in the game, this transaction type is still sent when a player edits a book. We don't need
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//these transactions for editing books, since we have BookEditPacket, so we can just ignore them.
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$this->session->getLogger()->debug("Ignoring normal inventory transaction with $actionCount actions (drop-item should have exactly 2 actions)");
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return false;
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}
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$sourceSlot = null;
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$clientItemStack = null;
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$droppedCount = null;
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foreach($data->getActions() as $networkInventoryAction){
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if($networkInventoryAction->sourceType === NetworkInventoryAction::SOURCE_WORLD && $networkInventoryAction->inventorySlot == NetworkInventoryAction::ACTION_MAGIC_SLOT_DROP_ITEM){
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$droppedCount = $networkInventoryAction->newItem->getItemStack()->getCount();
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if($droppedCount <= 0){
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throw new PacketHandlingException("Expected positive count for dropped item");
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}
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}elseif($networkInventoryAction->sourceType === NetworkInventoryAction::SOURCE_CONTAINER && $networkInventoryAction->windowId === ContainerIds::INVENTORY){
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//mobile players can drop an item from a non-selected hotbar slot
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$sourceSlot = $networkInventoryAction->inventorySlot;
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|
$clientItemStack = $networkInventoryAction->oldItem->getItemStack();
|
|
}else{
|
|
$this->session->getLogger()->debug("Unexpected inventory action type $networkInventoryAction->sourceType in drop item transaction");
|
|
return false;
|
|
}
|
|
}
|
|
if($sourceSlot === null || $clientItemStack === null || $droppedCount === null){
|
|
$this->session->getLogger()->debug("Missing information in drop item transaction, need source slot, client item stack and dropped count");
|
|
return false;
|
|
}
|
|
|
|
$inventory = $this->player->getInventory();
|
|
|
|
if(!$inventory->slotExists($sourceSlot)){
|
|
return false; //TODO: size desync??
|
|
}
|
|
|
|
$sourceSlotItem = $inventory->getItem($sourceSlot);
|
|
if($sourceSlotItem->getCount() < $droppedCount){
|
|
return false;
|
|
}
|
|
$serverItemStack = $this->session->getTypeConverter()->coreItemStackToNet($sourceSlotItem);
|
|
//Sadly we don't have itemstack IDs here, so we have to compare the basic item properties to ensure that we're
|
|
//dropping the item the client expects (inventory might be out of sync with the client).
|
|
if(
|
|
$serverItemStack->getId() !== $clientItemStack->getId() ||
|
|
$serverItemStack->getMeta() !== $clientItemStack->getMeta() ||
|
|
$serverItemStack->getCount() !== $clientItemStack->getCount() ||
|
|
$serverItemStack->getBlockRuntimeId() !== $clientItemStack->getBlockRuntimeId()
|
|
//Raw extraData may not match because of TAG_Compound key ordering differences, and decoding it to compare
|
|
//is costly. Assume that we're in sync if id+meta+count+runtimeId match.
|
|
//NB: Make sure $clientItemStack isn't used to create the dropped item, as that would allow the client
|
|
//to change the item NBT since we're not validating it.
|
|
){
|
|
return false;
|
|
}
|
|
|
|
//this modifies $sourceSlotItem
|
|
$droppedItem = $sourceSlotItem->pop($droppedCount);
|
|
|
|
$builder = new TransactionBuilder();
|
|
$builder->getInventory($inventory)->setItem($sourceSlot, $sourceSlotItem);
|
|
$builder->addAction(new DropItemAction($droppedItem));
|
|
|
|
$transaction = new InventoryTransaction($this->player, $builder->generateActions());
|
|
return $this->executeInventoryTransaction($transaction, $itemStackRequestId);
|
|
}
|
|
|
|
private function handleUseItemTransaction(UseItemTransactionData $data) : bool{
|
|
$this->player->selectHotbarSlot($data->getHotbarSlot());
|
|
|
|
switch($data->getActionType()){
|
|
case UseItemTransactionData::ACTION_CLICK_BLOCK:
|
|
//TODO: start hack for client spam bug
|
|
$clickPos = $data->getClickPosition();
|
|
$spamBug = ($this->lastRightClickData !== null &&
|
|
microtime(true) - $this->lastRightClickTime < 0.1 && //100ms
|
|
$this->lastRightClickData->getPlayerPosition()->distanceSquared($data->getPlayerPosition()) < 0.00001 &&
|
|
$this->lastRightClickData->getBlockPosition()->equals($data->getBlockPosition()) &&
|
|
$this->lastRightClickData->getClickPosition()->distanceSquared($clickPos) < 0.00001 //signature spam bug has 0 distance, but allow some error
|
|
);
|
|
//get rid of continued spam if the player clicks and holds right-click
|
|
$this->lastRightClickData = $data;
|
|
$this->lastRightClickTime = microtime(true);
|
|
if($spamBug){
|
|
return true;
|
|
}
|
|
//TODO: end hack for client spam bug
|
|
|
|
self::validateFacing($data->getFace());
|
|
|
|
$blockPos = $data->getBlockPosition();
|
|
$vBlockPos = new Vector3($blockPos->getX(), $blockPos->getY(), $blockPos->getZ());
|
|
$this->player->interactBlock($vBlockPos, $data->getFace(), $clickPos);
|
|
//always sync this in case plugins caused a different result than the client expected
|
|
//we *could* try to enhance detection of plugin-altered behaviour, but this would require propagating
|
|
//more information up the stack. For now I think this is good enough.
|
|
//if only the client would tell us what blocks it thinks changed...
|
|
$this->syncBlocksNearby($vBlockPos, $data->getFace());
|
|
return true;
|
|
case UseItemTransactionData::ACTION_BREAK_BLOCK:
|
|
$blockPos = $data->getBlockPosition();
|
|
$vBlockPos = new Vector3($blockPos->getX(), $blockPos->getY(), $blockPos->getZ());
|
|
if(!$this->player->breakBlock($vBlockPos)){
|
|
$this->syncBlocksNearby($vBlockPos, null);
|
|
}
|
|
return true;
|
|
case UseItemTransactionData::ACTION_CLICK_AIR:
|
|
if($this->player->isUsingItem()){
|
|
if(!$this->player->consumeHeldItem()){
|
|
$hungerAttr = $this->player->getAttributeMap()->get(Attribute::HUNGER) ?? throw new AssumptionFailedError();
|
|
$hungerAttr->markSynchronized(false);
|
|
}
|
|
return true;
|
|
}
|
|
$this->player->useHeldItem();
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @throws PacketHandlingException
|
|
*/
|
|
private static function validateFacing(int $facing) : void{
|
|
if(!in_array($facing, Facing::ALL, true)){
|
|
throw new PacketHandlingException("Invalid facing value $facing");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Syncs blocks nearby to ensure that the client and server agree on the world's blocks after a block interaction.
|
|
*/
|
|
private function syncBlocksNearby(Vector3 $blockPos, ?int $face) : void{
|
|
if($blockPos->distanceSquared($this->player->getLocation()) < 10000){
|
|
$blocks = $blockPos->sidesArray();
|
|
if($face !== null){
|
|
$sidePos = $blockPos->getSide($face);
|
|
|
|
/** @var Vector3[] $blocks */
|
|
array_push($blocks, ...$sidePos->sidesArray()); //getAllSides() on each of these will include $blockPos and $sidePos because they are next to each other
|
|
}else{
|
|
$blocks[] = $blockPos;
|
|
}
|
|
foreach($this->player->getWorld()->createBlockUpdatePackets($blocks) as $packet){
|
|
$this->session->sendDataPacket($packet);
|
|
}
|
|
}
|
|
}
|
|
|
|
private function handleUseItemOnEntityTransaction(UseItemOnEntityTransactionData $data) : bool{
|
|
$target = $this->player->getWorld()->getEntity($data->getActorRuntimeId());
|
|
if($target === null){
|
|
return false;
|
|
}
|
|
|
|
$this->player->selectHotbarSlot($data->getHotbarSlot());
|
|
|
|
switch($data->getActionType()){
|
|
case UseItemOnEntityTransactionData::ACTION_INTERACT:
|
|
$this->player->interactEntity($target, $data->getClickPosition());
|
|
return true;
|
|
case UseItemOnEntityTransactionData::ACTION_ATTACK:
|
|
$this->player->attackEntity($target);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private function handleReleaseItemTransaction(ReleaseItemTransactionData $data) : bool{
|
|
$this->player->selectHotbarSlot($data->getHotbarSlot());
|
|
|
|
if($data->getActionType() == ReleaseItemTransactionData::ACTION_RELEASE){
|
|
$this->player->releaseHeldItem();
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private function handleSingleItemStackRequest(ItemStackRequest $request) : ItemStackResponse{
|
|
if(count($request->getActions()) > 60){
|
|
//recipe book auto crafting can affect all slots of the inventory when consuming inputs or producing outputs
|
|
//this means there could be as many as 50 CraftingConsumeInput actions or Place (taking the result) actions
|
|
//in a single request (there are certain ways items can be arranged which will result in the same stack
|
|
//being taken from multiple times, but this is behaviour with a calculable limit)
|
|
//this means there SHOULD be AT MOST 53 actions in a single request, but 60 is a nice round number.
|
|
//n64Stacks = ?
|
|
//n1Stacks = 45 - n64Stacks
|
|
//nItemsRequiredFor1Craft = 9
|
|
//nResults = floor((n1Stacks + (n64Stacks * 64)) / nItemsRequiredFor1Craft)
|
|
//nTakeActionsTotal = floor(64 / nResults) + max(1, 64 % nResults) + ((nResults * nItemsRequiredFor1Craft) - (n64Stacks * 64))
|
|
throw new PacketHandlingException("Too many actions in ItemStackRequest");
|
|
}
|
|
$executor = new ItemStackRequestExecutor($this->player, $this->inventoryManager, $request);
|
|
try{
|
|
$transaction = $executor->generateInventoryTransaction();
|
|
$result = $this->executeInventoryTransaction($transaction, $request->getRequestId());
|
|
}catch(ItemStackRequestProcessException $e){
|
|
$result = false;
|
|
$this->session->getLogger()->debug("ItemStackRequest #" . $request->getRequestId() . " failed: " . $e->getMessage());
|
|
$this->session->getLogger()->debug(implode("\n", Utils::printableExceptionInfo($e)));
|
|
$this->inventoryManager->requestSyncAll();
|
|
}
|
|
|
|
if(!$result){
|
|
return new ItemStackResponse(ItemStackResponse::RESULT_ERROR, $request->getRequestId());
|
|
}
|
|
return $executor->buildItemStackResponse();
|
|
}
|
|
|
|
public function handleItemStackRequest(ItemStackRequestPacket $packet) : bool{
|
|
$responses = [];
|
|
if(count($packet->getRequests()) > 80){
|
|
//TODO: we can probably lower this limit, but this will do for now
|
|
throw new PacketHandlingException("Too many requests in ItemStackRequestPacket");
|
|
}
|
|
foreach($packet->getRequests() as $request){
|
|
$responses[] = $this->handleSingleItemStackRequest($request);
|
|
}
|
|
|
|
$this->session->sendDataPacket(ItemStackResponsePacket::create($responses));
|
|
|
|
return true;
|
|
}
|
|
|
|
public function handleMobEquipment(MobEquipmentPacket $packet) : bool{
|
|
if($packet->windowId === ContainerIds::OFFHAND){
|
|
return true; //this happens when we put an item into the offhand
|
|
}
|
|
if($packet->windowId === ContainerIds::INVENTORY){
|
|
$this->inventoryManager->onClientSelectHotbarSlot($packet->hotbarSlot);
|
|
if(!$this->player->selectHotbarSlot($packet->hotbarSlot)){
|
|
$this->inventoryManager->syncSelectedHotbarSlot();
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function handleMobArmorEquipment(MobArmorEquipmentPacket $packet) : bool{
|
|
return true; //Not used
|
|
}
|
|
|
|
public function handleInteract(InteractPacket $packet) : bool{
|
|
if($packet->action === InteractPacket::ACTION_MOUSEOVER){
|
|
//TODO HACK: silence useless spam (MCPE 1.8)
|
|
//due to some messy Mojang hacks, it sends this when changing the held item now, which causes us to think
|
|
//the inventory was closed when it wasn't.
|
|
//this is also sent whenever entity metadata updates, which can get really spammy.
|
|
//TODO: implement handling for this where it matters
|
|
return true;
|
|
}
|
|
$target = $this->player->getWorld()->getEntity($packet->targetActorRuntimeId);
|
|
if($target === null){
|
|
return false;
|
|
}
|
|
if($packet->action === InteractPacket::ACTION_OPEN_INVENTORY && $target === $this->player){
|
|
$this->inventoryManager->onClientOpenMainInventory();
|
|
return true;
|
|
}
|
|
return false; //TODO
|
|
}
|
|
|
|
public function handleBlockPickRequest(BlockPickRequestPacket $packet) : bool{
|
|
return $this->player->pickBlock(new Vector3($packet->blockPosition->getX(), $packet->blockPosition->getY(), $packet->blockPosition->getZ()), $packet->addUserData);
|
|
}
|
|
|
|
public function handleActorPickRequest(ActorPickRequestPacket $packet) : bool{
|
|
return $this->player->pickEntity($packet->actorUniqueId);
|
|
}
|
|
|
|
public function handlePlayerAction(PlayerActionPacket $packet) : bool{
|
|
return $this->handlePlayerActionFromData($packet->action, $packet->blockPosition, $packet->face);
|
|
}
|
|
|
|
private function handlePlayerActionFromData(int $action, BlockPosition $blockPosition, int $face) : bool{
|
|
$pos = new Vector3($blockPosition->getX(), $blockPosition->getY(), $blockPosition->getZ());
|
|
|
|
switch($action){
|
|
case PlayerAction::START_BREAK:
|
|
self::validateFacing($face);
|
|
if(!$this->player->attackBlock($pos, $face)){
|
|
$this->syncBlocksNearby($pos, $face);
|
|
}
|
|
|
|
break;
|
|
|
|
case PlayerAction::ABORT_BREAK:
|
|
case PlayerAction::STOP_BREAK:
|
|
$this->player->stopBreakBlock($pos);
|
|
break;
|
|
case PlayerAction::START_SLEEPING:
|
|
//unused
|
|
break;
|
|
case PlayerAction::STOP_SLEEPING:
|
|
$this->player->stopSleep();
|
|
break;
|
|
case PlayerAction::CRACK_BREAK:
|
|
self::validateFacing($face);
|
|
$this->player->continueBreakBlock($pos, $face);
|
|
break;
|
|
case PlayerAction::INTERACT_BLOCK: //TODO: ignored (for now)
|
|
break;
|
|
case PlayerAction::CREATIVE_PLAYER_DESTROY_BLOCK:
|
|
//TODO: do we need to handle this?
|
|
break;
|
|
case PlayerAction::START_ITEM_USE_ON:
|
|
case PlayerAction::STOP_ITEM_USE_ON:
|
|
//TODO: this has no obvious use and seems only used for analytics in vanilla - ignore it
|
|
break;
|
|
default:
|
|
$this->session->getLogger()->debug("Unhandled/unknown player action type " . $action);
|
|
return false;
|
|
}
|
|
|
|
$this->player->setUsingItem(false);
|
|
|
|
return true;
|
|
}
|
|
|
|
public function handleSetActorMotion(SetActorMotionPacket $packet) : bool{
|
|
return true; //Not used: This packet is (erroneously) sent to the server when the client is riding a vehicle.
|
|
}
|
|
|
|
public function handleAnimate(AnimatePacket $packet) : bool{
|
|
return true; //Not used
|
|
}
|
|
|
|
public function handleContainerClose(ContainerClosePacket $packet) : bool{
|
|
$this->inventoryManager->onClientRemoveWindow($packet->windowId);
|
|
return true;
|
|
}
|
|
|
|
public function handlePlayerHotbar(PlayerHotbarPacket $packet) : bool{
|
|
return true; //this packet is useless
|
|
}
|
|
|
|
public function handleBlockActorData(BlockActorDataPacket $packet) : bool{
|
|
$pos = new Vector3($packet->blockPosition->getX(), $packet->blockPosition->getY(), $packet->blockPosition->getZ());
|
|
if($pos->distanceSquared($this->player->getLocation()) > 10000){
|
|
return false;
|
|
}
|
|
|
|
$block = $this->player->getLocation()->getWorld()->getBlock($pos);
|
|
$nbt = $packet->nbt->getRoot();
|
|
if(!($nbt instanceof CompoundTag)) throw new AssumptionFailedError("PHPStan should ensure this is a CompoundTag"); //for phpstorm's benefit
|
|
|
|
if($block instanceof BaseSign){
|
|
$frontTextTag = $nbt->getTag(Sign::TAG_FRONT_TEXT);
|
|
if(!$frontTextTag instanceof CompoundTag){
|
|
throw new PacketHandlingException("Invalid tag type " . get_debug_type($frontTextTag) . " for tag \"" . Sign::TAG_FRONT_TEXT . "\" in sign update data");
|
|
}
|
|
$textBlobTag = $frontTextTag->getTag(Sign::TAG_TEXT_BLOB);
|
|
if(!$textBlobTag instanceof StringTag){
|
|
throw new PacketHandlingException("Invalid tag type " . get_debug_type($textBlobTag) . " for tag \"" . Sign::TAG_TEXT_BLOB . "\" in sign update data");
|
|
}
|
|
|
|
try{
|
|
$text = SignText::fromBlob($textBlobTag->getValue());
|
|
}catch(\InvalidArgumentException $e){
|
|
throw PacketHandlingException::wrap($e, "Invalid sign text update");
|
|
}
|
|
|
|
try{
|
|
if(!$block->updateText($this->player, $text)){
|
|
foreach($this->player->getWorld()->createBlockUpdatePackets([$pos]) as $updatePacket){
|
|
$this->session->sendDataPacket($updatePacket);
|
|
}
|
|
}
|
|
}catch(\UnexpectedValueException $e){
|
|
throw PacketHandlingException::wrap($e);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public function handlePlayerInput(PlayerInputPacket $packet) : bool{
|
|
return false; //TODO
|
|
}
|
|
|
|
public function handleSetPlayerGameType(SetPlayerGameTypePacket $packet) : bool{
|
|
$gameMode = $this->session->getTypeConverter()->protocolGameModeToCore($packet->gamemode);
|
|
if($gameMode !== $this->player->getGamemode()){
|
|
//Set this back to default. TODO: handle this properly
|
|
$this->session->syncGameMode($this->player->getGamemode(), true);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public function handleSpawnExperienceOrb(SpawnExperienceOrbPacket $packet) : bool{
|
|
return false; //TODO
|
|
}
|
|
|
|
public function handleMapInfoRequest(MapInfoRequestPacket $packet) : bool{
|
|
return false; //TODO
|
|
}
|
|
|
|
public function handleRequestChunkRadius(RequestChunkRadiusPacket $packet) : bool{
|
|
$this->player->setViewDistance($packet->radius);
|
|
|
|
return true;
|
|
}
|
|
|
|
public function handleBossEvent(BossEventPacket $packet) : bool{
|
|
return false; //TODO
|
|
}
|
|
|
|
public function handleShowCredits(ShowCreditsPacket $packet) : bool{
|
|
return false; //TODO: handle resume
|
|
}
|
|
|
|
public function handleCommandRequest(CommandRequestPacket $packet) : bool{
|
|
if(str_starts_with($packet->command, '/')){
|
|
$this->player->chat($packet->command);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function handleCommandBlockUpdate(CommandBlockUpdatePacket $packet) : bool{
|
|
return false; //TODO
|
|
}
|
|
|
|
public function handlePlayerSkin(PlayerSkinPacket $packet) : bool{
|
|
if($packet->skin->getFullSkinId() === $this->lastRequestedFullSkinId){
|
|
//TODO: HACK! In 1.19.60, the client sends its skin back to us if we sent it a skin different from the one
|
|
//it's using. We need to prevent this from causing a feedback loop.
|
|
$this->session->getLogger()->debug("Refused duplicate skin change request");
|
|
return true;
|
|
}
|
|
$this->lastRequestedFullSkinId = $packet->skin->getFullSkinId();
|
|
|
|
$this->session->getLogger()->debug("Processing skin change request");
|
|
try{
|
|
$skin = $this->session->getTypeConverter()->getSkinAdapter()->fromSkinData($packet->skin);
|
|
}catch(InvalidSkinException $e){
|
|
throw PacketHandlingException::wrap($e, "Invalid skin in PlayerSkinPacket");
|
|
}
|
|
return $this->player->changeSkin($skin, $packet->newSkinName, $packet->oldSkinName);
|
|
}
|
|
|
|
public function handleSubClientLogin(SubClientLoginPacket $packet) : bool{
|
|
return false; //TODO
|
|
}
|
|
|
|
/**
|
|
* @throws PacketHandlingException
|
|
*/
|
|
private function checkBookText(string $string, string $fieldName, int $softLimit, int $hardLimit, bool &$cancel) : string{
|
|
if(strlen($string) > $hardLimit){
|
|
throw new PacketHandlingException(sprintf("Book %s must be at most %d bytes, but have %d bytes", $fieldName, $hardLimit, strlen($string)));
|
|
}
|
|
|
|
$result = TextFormat::clean($string, false);
|
|
//strlen() is O(1), mb_strlen() is O(n)
|
|
if(strlen($result) > $softLimit * 4 || mb_strlen($result, 'UTF-8') > $softLimit){
|
|
$cancel = true;
|
|
$this->session->getLogger()->debug("Cancelled book edit due to $fieldName exceeded soft limit of $softLimit chars");
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
public function handleBookEdit(BookEditPacket $packet) : bool{
|
|
$inventory = $this->player->getInventory();
|
|
if(!$inventory->slotExists($packet->inventorySlot)){
|
|
return false;
|
|
}
|
|
//TODO: break this up into book API things
|
|
$oldBook = $inventory->getItem($packet->inventorySlot);
|
|
if(!($oldBook instanceof WritableBook)){
|
|
return false;
|
|
}
|
|
|
|
$newBook = clone $oldBook;
|
|
$modifiedPages = [];
|
|
$cancel = false;
|
|
switch($packet->type){
|
|
case BookEditPacket::TYPE_REPLACE_PAGE:
|
|
$text = self::checkBookText($packet->text, "page text", 256, WritableBookPage::PAGE_LENGTH_HARD_LIMIT_BYTES, $cancel);
|
|
$newBook->setPageText($packet->pageNumber, $text);
|
|
$modifiedPages[] = $packet->pageNumber;
|
|
break;
|
|
case BookEditPacket::TYPE_ADD_PAGE:
|
|
if(!$newBook->pageExists($packet->pageNumber)){
|
|
//this may only come before a page which already exists
|
|
//TODO: the client can send insert-before actions on trailing client-side pages which cause odd behaviour on the server
|
|
return false;
|
|
}
|
|
$text = self::checkBookText($packet->text, "page text", 256, WritableBookPage::PAGE_LENGTH_HARD_LIMIT_BYTES, $cancel);
|
|
$newBook->insertPage($packet->pageNumber, $text);
|
|
$modifiedPages[] = $packet->pageNumber;
|
|
break;
|
|
case BookEditPacket::TYPE_DELETE_PAGE:
|
|
if(!$newBook->pageExists($packet->pageNumber)){
|
|
return false;
|
|
}
|
|
$newBook->deletePage($packet->pageNumber);
|
|
$modifiedPages[] = $packet->pageNumber;
|
|
break;
|
|
case BookEditPacket::TYPE_SWAP_PAGES:
|
|
if(!$newBook->pageExists($packet->pageNumber) || !$newBook->pageExists($packet->secondaryPageNumber)){
|
|
//the client will create pages on its own without telling us until it tries to switch them
|
|
$newBook->addPage(max($packet->pageNumber, $packet->secondaryPageNumber));
|
|
}
|
|
$newBook->swapPages($packet->pageNumber, $packet->secondaryPageNumber);
|
|
$modifiedPages = [$packet->pageNumber, $packet->secondaryPageNumber];
|
|
break;
|
|
case BookEditPacket::TYPE_SIGN_BOOK:
|
|
$title = self::checkBookText($packet->title, "title", 16, Limits::INT16_MAX, $cancel);
|
|
//this one doesn't have a limit in vanilla, so we have to improvise
|
|
$author = self::checkBookText($packet->author, "author", 256, Limits::INT16_MAX, $cancel);
|
|
|
|
$newBook = VanillaItems::WRITTEN_BOOK()
|
|
->setPages($oldBook->getPages())
|
|
->setAuthor($author)
|
|
->setTitle($title)
|
|
->setGeneration(WrittenBook::GENERATION_ORIGINAL);
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
//for redundancy, in case of protocol changes, we don't want to pass these directly
|
|
$action = match($packet->type){
|
|
BookEditPacket::TYPE_REPLACE_PAGE => PlayerEditBookEvent::ACTION_REPLACE_PAGE,
|
|
BookEditPacket::TYPE_ADD_PAGE => PlayerEditBookEvent::ACTION_ADD_PAGE,
|
|
BookEditPacket::TYPE_DELETE_PAGE => PlayerEditBookEvent::ACTION_DELETE_PAGE,
|
|
BookEditPacket::TYPE_SWAP_PAGES => PlayerEditBookEvent::ACTION_SWAP_PAGES,
|
|
BookEditPacket::TYPE_SIGN_BOOK => PlayerEditBookEvent::ACTION_SIGN_BOOK,
|
|
default => throw new AssumptionFailedError("We already filtered unknown types in the switch above")
|
|
};
|
|
|
|
/*
|
|
* Plugins may have created books with more than 50 pages; we allow plugins to do this, but not players.
|
|
* Don't allow the page count to grow past 50, but allow deleting, swapping or altering text of existing pages.
|
|
*/
|
|
$oldPageCount = count($oldBook->getPages());
|
|
$newPageCount = count($newBook->getPages());
|
|
if(($newPageCount > $oldPageCount && $newPageCount > 50)){
|
|
$this->session->getLogger()->debug("Cancelled book edit due to adding too many pages (new page count would be $newPageCount)");
|
|
$cancel = true;
|
|
}
|
|
|
|
$event = new PlayerEditBookEvent($this->player, $oldBook, $newBook, $action, $modifiedPages);
|
|
if($cancel){
|
|
$event->cancel();
|
|
}
|
|
|
|
$event->call();
|
|
if($event->isCancelled()){
|
|
return true;
|
|
}
|
|
|
|
$this->player->getInventory()->setItem($packet->inventorySlot, $event->getNewBook());
|
|
|
|
return true;
|
|
}
|
|
|
|
public function handleModalFormResponse(ModalFormResponsePacket $packet) : bool{
|
|
if($packet->cancelReason !== null){
|
|
//TODO: make APIs for this to allow plugins to use this information
|
|
return $this->player->onFormSubmit($packet->formId, null);
|
|
}elseif($packet->formData !== null){
|
|
try{
|
|
$responseData = json_decode($packet->formData, true, self::MAX_FORM_RESPONSE_DEPTH, JSON_THROW_ON_ERROR);
|
|
}catch(\JsonException $e){
|
|
throw PacketHandlingException::wrap($e, "Failed to decode form response data");
|
|
}
|
|
return $this->player->onFormSubmit($packet->formId, $responseData);
|
|
}else{
|
|
throw new PacketHandlingException("Expected either formData or cancelReason to be set in ModalFormResponsePacket");
|
|
}
|
|
}
|
|
|
|
public function handleServerSettingsRequest(ServerSettingsRequestPacket $packet) : bool{
|
|
return false; //TODO: GUI stuff
|
|
}
|
|
|
|
public function handleLabTable(LabTablePacket $packet) : bool{
|
|
return false; //TODO
|
|
}
|
|
|
|
public function handleLecternUpdate(LecternUpdatePacket $packet) : bool{
|
|
$pos = $packet->blockPosition;
|
|
$chunkX = $pos->getX() >> Chunk::COORD_BIT_SIZE;
|
|
$chunkZ = $pos->getZ() >> Chunk::COORD_BIT_SIZE;
|
|
$world = $this->player->getWorld();
|
|
if(!$world->isChunkLoaded($chunkX, $chunkZ) || $world->isChunkLocked($chunkX, $chunkZ)){
|
|
return false;
|
|
}
|
|
|
|
$lectern = $world->getBlockAt($pos->getX(), $pos->getY(), $pos->getZ());
|
|
if($lectern instanceof Lectern && $this->player->canInteract($lectern->getPosition(), 15)){
|
|
if(!$lectern->onPageTurn($packet->page)){
|
|
$this->syncBlocksNearby($lectern->getPosition(), null);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public function handleNetworkStackLatency(NetworkStackLatencyPacket $packet) : bool{
|
|
return true; //TODO: implement this properly - this is here to silence debug spam from MCPE dev builds
|
|
}
|
|
|
|
public function handleLevelSoundEvent(LevelSoundEventPacket $packet) : bool{
|
|
/*
|
|
* We don't handle this - all sounds are handled by the server now.
|
|
* However, some plugins find this useful to detect events like left-click-air, which doesn't have any other
|
|
* action bound to it.
|
|
* In addition, we use this handler to silence debug noise, since this packet is frequently sent by the client.
|
|
*/
|
|
return true;
|
|
}
|
|
|
|
public function handleEmote(EmotePacket $packet) : bool{
|
|
$this->player->emote($packet->getEmoteId());
|
|
return true;
|
|
}
|
|
}
|