static cell AMX_NATIVE_CALL RegisterHam(AMX *amx, cell *params)
{
	// Make sure the function we're requesting is within bounds
	int func=params[1];
	int post=params[4];

	CHECK_FUNCTION(func);

	char *function=MF_GetAmxString(amx, params[3], 0, NULL);
	char *classname=MF_GetAmxString(amx, params[2], 1, NULL);
	
	// Check the entity

	// create an entity, assign it the gamedll's class, hook it and destroy it
	edict_t *Entity=CREATE_ENTITY();

	CALL_GAME_ENTITY(PLID,classname,&Entity->v);

	if (Entity->pvPrivateData == NULL)
	{
		REMOVE_ENTITY(Entity);

		MF_LogError(amx, AMX_ERR_NATIVE,"Failed to retrieve classtype for \"%s\", hook for \"%s\" not active.",classname,function);

		return 0;
	}
	void **vtable=GetVTable(Entity->pvPrivateData, Offsets.GetBase());

	REMOVE_ENTITY(Entity);

	if (vtable == NULL)
	{
		MF_LogError(amx, AMX_ERR_NATIVE,"Failed to retrieve vtable for \"%s\", hook for \"%s\" not active.",classname,function);

		return 0;
	}

	// Verify that the function is valid
	// Don't fail the plugin if this fails, just emit a normal error
	int fwd=hooklist[func].makefunc(amx, function);

	if (fwd == -1)
	{
		MF_LogError(amx, AMX_ERR_NATIVE, "Function %s not found.", function);

		return 0;
	}

	// We've passed all tests...

	int **ivtable=(int **)vtable;

	void *vfunction=(void *)ivtable[hooklist[func].vtid];

	// Check the list of this function's hooks, see if the function we have is a hook

	CVector<Hook *>::iterator end=hooks[func].end();
	for (CVector<Hook *>::iterator i=hooks[func].begin();
		 i!=end;
		 ++i)
	{
		if ((*i)->tramp == vfunction)
		{
			// Yes, this function is hooked
			Forward *pfwd=new Forward(fwd);
			if (post)
			{
				(*i)->post.push_back(pfwd);
			}
			else
			{
				(*i)->pre.push_back(pfwd);
			}
			return reinterpret_cast<cell>(pfwd);
		}
	}

	// If we got here, the function is not hooked
	Hook *hook=new Hook(vtable, hooklist[func].vtid, hooklist[func].targetfunc, hooklist[func].isvoid, hooklist[func].paramcount, classname);
	hooks[func].push_back(hook);

	Forward *pfwd=new Forward(fwd);
	if (post)
	{
		hook->post.push_back(pfwd);
	}
	else
	{
		hook->pre.push_back(pfwd);
	}

	return reinterpret_cast<cell>(pfwd);
}
// RegisterHamFromEntity(Ham:function, EntityId, const Callback[], Post=0);
static cell AMX_NATIVE_CALL RegisterHamFromEntity(AMX *amx, cell *params)
{
	// Make sure the function we're requesting is within bounds
	int func=params[1];
	int post=params[4];

	CHECK_FUNCTION(func);

	char *function=MF_GetAmxString(amx, params[3], 0, NULL);
	int entid=params[2];
	char classname[64];
	
	// Check the entity

	edict_t *Entity=INDEXENT_NEW(entid);


	if (Entity->pvPrivateData == NULL)
	{

		MF_LogError(amx, AMX_ERR_NATIVE,"Failed to retrieve classtype for entity id \"%d\", hook for \"%s\" not active.",entid,function);

		return 0;
	}
	void **vtable=GetVTable(Entity->pvPrivateData, Offsets.GetBase());


	if (vtable == NULL)
	{
		MF_LogError(amx, AMX_ERR_NATIVE,"Failed to retrieve vtable for entity id \"%d\", hook for \"%s\" not active.",entid,function);

		return 0;
	}

	// Verify that the function is valid
	// Don't fail the plugin if this fails, just emit a normal error
	int fwd=hooklist[func].makefunc(amx, function);

	if (fwd == -1)
	{
		MF_LogError(amx, AMX_ERR_NATIVE, "Function %s not found.", function);

		return 0;
	}

	// We've passed all tests...

	int **ivtable=(int **)vtable;

	void *vfunction=(void *)ivtable[hooklist[func].vtid];

	// Check the list of this function's hooks, see if the function we have is a hook

	CVector<Hook *>::iterator end=hooks[func].end();
	for (CVector<Hook *>::iterator i=hooks[func].begin();
		 i!=end;
		 ++i)
	{
		if ((*i)->tramp == vfunction)
		{
			// Yes, this function is hooked
			Forward *pfwd=new Forward(fwd);
			if (post)
			{
				(*i)->post.push_back(pfwd);
			}
			else
			{
				(*i)->pre.push_back(pfwd);
			}
			return reinterpret_cast<cell>(pfwd);
		}
	}

	// Note down the classname for the given class
	// It may very well be wrong (such as lots of TS weapons have the same classname)
	// but it's the best we can do, and better than nothing.
	// (only used for display)
	snprintf(classname, sizeof(classname) - 1, "%s", STRING(Entity->v.classname));

	// If we got here, the function is not hooked
	Hook *hook=new Hook(vtable, hooklist[func].vtid, hooklist[func].targetfunc, hooklist[func].isvoid, hooklist[func].paramcount, classname);
	hooks[func].push_back(hook);

	Forward *pfwd=new Forward(fwd);
	if (post)
	{
		hook->post.push_back(pfwd);
	}
	else
	{
		hook->pre.push_back(pfwd);
	}

	return reinterpret_cast<cell>(pfwd);
}
Ejemplo n.º 3
0
static cell AMX_NATIVE_CALL RegisterHam(AMX *amx, cell *params)
{
	// Make sure the function we're requesting is within bounds
	int func=params[1];
	int post=params[4];

	CHECK_FUNCTION(func);

	char *function=MF_GetAmxString(amx, params[3], 0, NULL);
	char *classname=MF_GetAmxString(amx, params[2], 1, NULL);
	
	// Check the entity

	// create an entity, assign it the gamedll's class, hook it and destroy it
	edict_t *Entity=CREATE_ENTITY();

	CALL_GAME_ENTITY(PLID,classname,&Entity->v);

	if (Entity->pvPrivateData == NULL)
	{
		REMOVE_ENTITY(Entity);

		MF_LogError(amx, AMX_ERR_NATIVE,"Failed to retrieve classtype for \"%s\", hook for \"%s\" not active.",classname,function);

		return 0;
	}
	void **vtable=GetVTable(Entity->pvPrivateData, Offsets.GetBase());

	REMOVE_ENTITY(Entity);

	if (vtable == NULL)
	{
		MF_LogError(amx, AMX_ERR_NATIVE,"Failed to retrieve vtable for \"%s\", hook for \"%s\" not active.",classname,function);

		return 0;
	}

	// Verify that the function is valid
	// Don't fail the plugin if this fails, just emit a normal error
	int fwd=hooklist[func].makefunc(amx, function);

	if (fwd == -1)
	{
		MF_LogError(amx, AMX_ERR_NATIVE, "Function %s not found.", function);

		return 0;
	}

	bool enableSpecialBot = false;

	// Old plugin doesn't have this param.
	if (*params / sizeof(cell) == 5)
	{
		enableSpecialBot = params[5] > 0;
	}

	Forward *pfwd = new Forward(fwd);

	// We've passed all tests...
	if (strcmp(classname, "player") == 0 && enableSpecialBot)
	{
		SpecialbotHandler.RegisterHamSpecialBot(amx, func, function, post, pfwd);
	}

	int **ivtable=(int **)vtable;

	void *vfunction=(void *)ivtable[hooklist[func].vtid];

	// Check the list of this function's hooks, see if the function we have is a hook

	for (size_t i = 0; i < hooks[func].length(); ++i)
	{
		if (hooks[func].at(i)->tramp == vfunction)
		{
			// Yes, this function is hooked
			if (post)
			{
				hooks[func].at(i)->post.append(pfwd);
			}
			else
			{
				hooks[func].at(i)->pre.append(pfwd);
			}
			return reinterpret_cast<cell>(pfwd);
		}
	}

	// If we got here, the function is not hooked
	Hook *hook = new Hook(vtable, hooklist[func].vtid, hooklist[func].targetfunc, hooklist[func].isvoid, hooklist[func].needsretbuf, hooklist[func].paramcount, classname);
	hooks[func].append(hook);

	if (post)
	{
		hook->post.append(pfwd);
	}
	else
	{
		hook->pre.append(pfwd);
	}

	return reinterpret_cast<cell>(pfwd);
}