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- added a check to the MENUDEF parser to prevent special menus from being replaced by something non-functional to counter attempts to cripple the engine's functionality.

Browse source 
SVN r3682 (trunk)
This commit is contained in:
Christoph Oelckers 2012-06-09 11:05:25 +00:00
parent 086d0a797e
commit 18839acddb
2 changed files with 36 additions and 11 deletions
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3
src/menu/menu.h
View file

@ -86,6 +86,7 @@ struct FMenuDescriptor
FName mMenuName;
FString mNetgameMessage;
int mType;
const PClass *mClass;
virtual ~FMenuDescriptor() {}
};
@ -108,7 +109,6 @@ struct FListMenuDescriptor : public FMenuDescriptor
FFont *mFont;
EColorRange mFontColor;
EColorRange mFontColor2;
const PClass *mClass;
FMenuDescriptor *mRedirect; // used to redirect overlong skill and episode menus to option menu based alternatives
bool mCenter;
@ -153,7 +153,6 @@ struct FOptionMenuDescriptor : public FMenuDescriptor
int mIndent;
int mPosition;
bool mDontDim;
const PClass *mClass;
void CalcIndent();
FOptionMenuItem *GetItem(FName name);

44
src/menu/menudef.cpp
View file

@ -450,6 +450,37 @@ static void ParseListMenuBody(FScanner &sc, FListMenuDescriptor *desc)
//
//=============================================================================
static bool CheckCompatible(FMenuDescriptor *newd, FMenuDescriptor *oldd)
{
if (oldd->mClass == NULL) return true;
return oldd->mClass == newd->mClass;
}
static bool ReplaceMenu(FScanner &sc, FMenuDescriptor *desc)
{
FMenuDescriptor **pOld = MenuDescriptors.CheckKey(desc->mMenuName);
if (pOld != NULL && *pOld != NULL)
{
if (CheckCompatible(desc, *pOld))
{
delete *pOld;
}
else
{
sc.ScriptMessage("Tried to replace menu '%s' with a menu of different type", desc->mMenuName.GetChars());
return true;
}
}
MenuDescriptors[desc->mMenuName] = desc;
return false;
}
//=============================================================================
//
//
//
//=============================================================================
static void ParseListMenu(FScanner &sc)
{
sc.MustGetString();
@ -476,11 +507,9 @@ static void ParseListMenu(FScanner &sc)
desc->mWRight = 0;
desc->mCenter = false;
FMenuDescriptor **pOld = MenuDescriptors.CheckKey(desc->mMenuName);
if (pOld != NULL && *pOld != NULL) delete *pOld;
MenuDescriptors[desc->mMenuName] = desc;
ParseListMenuBody(sc, desc);
bool scratch = ReplaceMenu(sc, desc);
if (scratch) delete desc;
}
//=============================================================================
@ -810,13 +839,10 @@ static void ParseOptionMenu(FScanner &sc)
desc->mIndent = DefaultOptionMenuSettings.mIndent;
desc->mDontDim = DefaultOptionMenuSettings.mDontDim;
FMenuDescriptor **pOld = MenuDescriptors.CheckKey(desc->mMenuName);
if (pOld != NULL && *pOld != NULL) delete *pOld;
MenuDescriptors[desc->mMenuName] = desc;
ParseOptionMenuBody(sc, desc);
bool scratch = ReplaceMenu(sc, desc);
if (desc->mIndent == 0) desc->CalcIndent();
if (scratch) delete desc;
}