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Do not assume the presence of a crafting transaction closing marker

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fixes #3655, fixes #3241
instead of guessing where the end of the transaction is, we attempt validation after every piece of the transaction, with the assumption being that a crafting transaction will not validate until it's complete.
This commit is contained in:
Dylan K. Taylor 2020-08-02 23:37:33 +01:00
parent 756840f11d
commit 5b620d964e
1 changed files with 23 additions and 19 deletions
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24
src/pocketmine/Player.php
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@ -149,6 +149,7 @@ use pocketmine\network\mcpe\protocol\types\CommandParameter;
use pocketmine\network\mcpe\protocol\types\ContainerIds;
use pocketmine\network\mcpe\protocol\types\DimensionIds;
use pocketmine\network\mcpe\protocol\types\GameMode;
use pocketmine\network\mcpe\protocol\types\inventory\UIInventorySlotOffset;
use pocketmine\network\mcpe\protocol\types\NetworkInventoryAction;
use pocketmine\network\mcpe\protocol\types\PersonaPieceTintColor;
use pocketmine\network\mcpe\protocol\types\PersonaSkinPiece;
@ -2392,18 +2393,20 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
/** @var InventoryAction[] $actions */
$actions = [];
$isCraftingPart = false;
$isFinalCraftingPart = false;
foreach($packet->actions as $networkInventoryAction){
if(
$networkInventoryAction->sourceType === NetworkInventoryAction::SOURCE_TODO and (
$networkInventoryAction->windowId === NetworkInventoryAction::SOURCE_TYPE_CRAFTING_RESULT or
$networkInventoryAction->windowId === NetworkInventoryAction::SOURCE_TYPE_CRAFTING_USE_INGREDIENT
) or (
$this->craftingTransaction !== null &&
!$networkInventoryAction->oldItem->equalsExact($networkInventoryAction->newItem) &&
$networkInventoryAction->sourceType === NetworkInventoryAction::SOURCE_CONTAINER &&
$networkInventoryAction->windowId === ContainerIds::UI &&
$networkInventoryAction->inventorySlot === UIInventorySlotOffset::CREATED_ITEM_OUTPUT
)
){
$isCraftingPart = true;
if($networkInventoryAction->windowId === NetworkInventoryAction::SOURCE_TYPE_CRAFTING_RESULT){
$isFinalCraftingPart = true;
}
}
try{
$action = $networkInventoryAction->createInventoryAction($this);
@ -2426,9 +2429,13 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
}
}
if($isFinalCraftingPart){
//we get the actions for this in several packets, so we need to wait until we have all the pieces before
//trying to execute it
try{
$this->craftingTransaction->validate();
}catch(TransactionValidationException $e){
//transaction is incomplete - crafting transaction comes in lots of little bits, so we have to collect
//all of the parts before we can execute it
return true;
}
$ret = true;
try{
@ -2440,9 +2447,6 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
$this->craftingTransaction = null;
return $ret;
}
return true;
}elseif($this->craftingTransaction !== null){
$this->server->getLogger()->debug("Got unexpected normal inventory action with incomplete crafting transaction from " . $this->getName() . ", refusing to execute crafting");
$this->craftingTransaction = null;