flewkey/cuberite-2a
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Fix potential destruction crashes (#5095)

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* Fix potential destruction crashes

* Fix destructors accessing destroyted objects
* Fix cPlayer not destroying windows (Destroyed never called)
* Tentatively fixes #4608, fixes #3236, fixes #3262
- Remove cEntity::Destroyed() and replace with cEntity::OnRemoveFromWorld()

* Add missing call to OnRemoveFromWorld
This commit is contained in:
Tiger Wang
2021-01-02 13:50:34 +00:00
committed by GitHub
parent 4656f7486d
commit 16aeb84cd3
33 changed files with 409 additions and 464 deletions
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45
src/BlockEntities/FurnaceEntity.cpp
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@@ -25,7 +25,6 @@ enum
cFurnaceEntity::cFurnaceEntity(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, Vector3i a_Pos, cWorld * a_World):
Super(a_BlockType, a_BlockMeta, a_Pos, ContentsWidth, ContentsHeight, a_World),
m_CurrentRecipe(nullptr),
m_IsDestroyed(false),
m_IsCooking(a_BlockType == E_BLOCK_LIT_FURNACE),
m_NeedCookTime(0),
m_TimeCooked(0),
@@ -41,30 +40,6 @@ cFurnaceEntity::cFurnaceEntity(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, Ve
cFurnaceEntity::~cFurnaceEntity()
{
// Tell window its owner is destroyed
cWindow * Window = GetWindow();
if (Window != nullptr)
{
Window->OwnerDestroyed();
}
}
void cFurnaceEntity::Destroy()
{
m_IsDestroyed = true;
Super::Destroy();
}
void cFurnaceEntity::CopyFrom(const cBlockEntity & a_Src)
{
Super::CopyFrom(a_Src);
@@ -73,7 +48,6 @@ void cFurnaceEntity::CopyFrom(const cBlockEntity & a_Src)
m_CurrentRecipe = src.m_CurrentRecipe;
m_FuelBurnTime = src.m_FuelBurnTime;
m_IsCooking = src.m_IsCooking;
m_IsDestroyed = src.m_IsDestroyed;
m_IsLoading = src.m_IsLoading;
m_LastInput = src.m_LastInput;
m_NeedCookTime = src.m_NeedCookTime;
@@ -85,6 +59,20 @@ void cFurnaceEntity::CopyFrom(const cBlockEntity & a_Src)
void cFurnaceEntity::OnRemoveFromWorld()
{
const auto Window = GetWindow();
if (Window != nullptr)
{
// Tell window its owner is destroyed:
Window->OwnerDestroyed();
}
}
void cFurnaceEntity::SendTo(cClientHandle & a_Client)
{
// Nothing needs to be sent
@@ -259,11 +247,6 @@ void cFurnaceEntity::OnSlotChanged(cItemGrid * a_ItemGrid, int a_SlotNum)
{
Super::OnSlotChanged(a_ItemGrid, a_SlotNum);
if (m_IsDestroyed)
{
return;
}
if (m_IsLoading)
{
return;