exploit patch (#2975)

* soundemitter and soundPlay patched

* this is better + fix emitsound

* more efficient order + 260 char limit instead

* emitsound invalid character check

lua/entities/gmod_wire_expression2/core/sound.lua

@@ -71,12 +71,11 @@ local function soundStop(self, index, fade)
 end
 
 local function soundCreate(self, entity, index, time, path, fade)
+	path = string.Trim(string.sub(path, 1, 260))
 	if path:match('["?]') then return end
 	local data = self.data.sound_data
 	if not isAllowed( self ) then return end
 
-	path = path:Trim()
-	path = path:gsub( "\\", "/" )
 	if isnumber( index ) then index = math.floor( index ) end
 
 	local timerid = "E2_sound_stop_" .. self.entity:EntIndex() .. "_" .. index
@@ -303,7 +302,9 @@ local function EmitSound(e2, ent, snd, level, pitch, volume)
         level = maxlevel
     end
 
-    ent:EmitSound(snd, level, pitch, volume)
+	snd = string.sub(snd, 1, 260)
+	if snd:match('["?]') then return end
+	ent:EmitSound(snd, level, pitch, volume)
 end
 
 __e2setcost(20)

lua/entities/gmod_wire_soundemitter.lua

@@ -159,11 +159,11 @@ end
 function ENT:SetSound(soundName)
 	self:StopSounds()
 
+	soundName = string.Trim(string.sub(soundName, 1, 260))
 	if soundName:match('["?]') then return end
-	parsedsound = soundName:Trim()
-	util.PrecacheSound(parsedsound)
+	util.PrecacheSound(soundName)
 
-	self.sound = parsedsound
+	self.sound = soundName
 
 	self.SoundProperties = sound.GetProperties(self.sound)
 	if self.SoundProperties then
@@ -175,7 +175,7 @@ function ENT:SetSound(soundName)
 		WireLib.TriggerOutput(self, "Properties", {})
 	end
 
-	self:SetOverlayText( parsedsound:gsub("[/\\]+","/") )
+	self:SetOverlayText( soundName:gsub("[/\\]+","/") )
 end
 
 function ENT:StartSounds()