Add support to define function signatures in gamedata

A "Functions" section is parsed in gamedata files that allow you to define the signature of functions including metadata like the calling convention and specifying the register an argument is passed in.
A new native DHookCreateFromConf can be used to setup a hook or detour from one of that function sections in the "Functions" section.

sourcemod/gamedata/fbtools.games.txt

@@ -0,0 +1,77 @@
+"Games"
+{
+	"cstrike"
+	{
+		"Signatures"
+		{
+			"Deafen"
+			{
+				"library"		"server"
+				"windows"		"\x55\x8B\xEC\x83\xEC\x2A\x89\x4D\x2A\x8B\x45\x2A\x8B\x10\x8B\x4D\x2A\x8B\x82\x2A\x2A\x2A\x2A\xFF\xD0\x85\xC0\x74"
+				"linux"			"@_ZN9CCSPlayer6DeafenEf"
+			}
+			"CFlashbangProjectile::Detonate"
+			{
+				"library"		"server"
+				"windows"		"\x53\x56\x8B\xF1\x57\x8B\x86\x2A\x2A\x2A\x2A\xC1\xE8\x2A\xA8\x2A\x74\x2A\xE8\x2A\x2A\x2A\x2A\xD9\x05\x2A\x2A\x2A\x2A\x6A\x40\x6A\x00\x51\x8B\xCE"
+				"linux"			"@_ZN20CFlashbangProjectile8DetonateEv"
+			}
+			"PercentageOfFlashForPlayer"
+			{
+				"library"		"server"
+				"windows"		"\x53\x8B\xDC\x83\xEC\x08\x83\xE4\x2A\x83\xC4\x2A\x55\x8B\x6B\x2A\x89\x6C\x2A\x2A\x8B\xEC\x81\xEC\x2A\x2A\x2A\x2A\x56\x8B\x73\x08\x8D\x4D\xAC"
+				"linux"			"@_Z26PercentageOfFlashForPlayerP11CBaseEntity6VectorS0_"
+			}
+
+		}
+	}
+	"csgo"
+	{
+		"Signatures"
+		{
+			// "tr_player_flashbanged" is in RadiusFlash which calls CCSPlayer::Deafen and PercentageOfFlashForPlayer
+			"Deafen"
+			{
+				"library"		"server"
+				"windows"		"\x55\x8B\xEC\x83\xEC\x28\x56\x57\x8B\xF9\xF3\x0F\x11\x4D\xFC"
+				"linux"			"\x55\x89\xE5\x83\xEC\x48\x89\x7D\xFC\x8B\x7D\x08\x89\x5D\xF4\x89\x75\xF8\x8B\x07"
+			}
+			// "flashbang_detonate" and "Scorch"
+			"CFlashbangProjectile::Detonate"
+			{
+				"library"		"server"
+				"windows"		"\x55\x8B\xEC\x83\xEC\x6C\x53\x56\x57\x8B\xF1"
+				"linux"			"\x55\x89\xE5\x57\x56\x53\x81\xEC\x0C\x01\x00\x00\x8B\x5D\x08\x89\x1C\x24\xE8\x2A\x2A\x2A\x2A\x85\xC0\x89\xC6"
+			}
+			"PercentageOfFlashForPlayer"
+			{
+				"library"		"server"
+				"windows"		"\x53\x8B\xDC\x83\xEC\x08\x83\xE4\xF0\x83\xC4\x04\x55\x8B\x6B\x04\x89\x6C\x24\x04\x8B\xEC\x81\xEC\x08\x01\x00\x00\x56\x8B\xF1"
+				"linux"			"\x55\x89\xE5\x57\x56\x53\x81\xEC\x9C\x01\x00\x00\x8B\x5D\x08\x8B\x03"
+			}
+
+		}
+
+		"Functions"
+		{
+			"Deafen"
+			{
+				"signature"	"Deafen"
+				"callconv"	"thiscall"
+				"return"	"void"
+				"this"		"entity"
+				"arguments"
+				{
+					"distance"
+					{
+						"type"	"float"
+						"windows"
+						{
+							"register"	"xmm1"
+						}
+					}
+				}
+			}
+		}
+	}
+}

sourcemod/scripting/dynhooks-test.sp

@@ -33,14 +33,17 @@ public void OnPluginStart()
 	PrintToServer("CFlashbangProjectile::Detonate detoured!");
 	
 
-	hFlashbangDeafen = DHookCreateDetour(Address_Null, CallConv_THISCALL, ReturnType_Void, ThisPointer_CBaseEntity);
+	hFlashbangDeafen = DHookCreateFromConf(temp, "Deafen");
+	if (!hFlashbangDeafen)
+		SetFailState("Failed to setup detour for Deafen");
+	/*hFlashbangDeafen = DHookCreateDetour(Address_Null, CallConv_THISCALL, ReturnType_Void, ThisPointer_CBaseEntity);
 	if (!hFlashbangDeafen)
 		SetFailState("Failed to setup detour for Deafen");
 	
 	if (!DHookSetFromConf(hFlashbangDeafen, temp, SDKConf_Signature, "Deafen"))
 		SetFailState("Failed to load Deafen signature from gamedata");
 	
-	DHookAddParam(hFlashbangDeafen, HookParamType_Float, .custom_register=DHookRegister_XMM1);
+	DHookAddParam(hFlashbangDeafen, HookParamType_Float, .custom_register=DHookRegister_XMM1);*/
 	
 	if (!DHookEnableDetour(hFlashbangDeafen, false, Detour_OnDeafen))
 		SetFailState("Failed to detour Deafen.");

sourcemod/scripting/include/dhooks.inc

@@ -219,7 +219,7 @@ native bool DHookRemoveEntityListener(ListenType type, ListenCB callback);
  * @param callback		Callback function
  * 
  * @return Returns setup handle for the hook.
- * @error Failed to create hook setup handle.
+ * @error Failed to create hook setup handle or invalid callback function.
 */
 native Handle DHookCreate(int offset, HookType hooktype, ReturnType returntype, ThisPointerType thistype, DHookCallback callback);
 
@@ -237,6 +237,18 @@ native Handle DHookCreate(int offset, HookType hooktype, ReturnType returntype,
  */	
 native Handle DHookCreateDetour(Address funcaddr, CallingConvention callConv, ReturnType returntype, ThisPointerType thisType);
 
+/**
+ * Setup a detour or hook for a function as described in a "Functions" section in gamedata.
+ *
+ * @param gameconf		GameConfig handle
+ * @param name			Name of the function in the gamedata to load.
+ * @param callback		Callback function (only required for virtual hooks - ignored for detours).
+ *
+ * @return				Setup handle for the detour or INVALID_HANDLE if offset/signature/address wasn't found.
+ * @error				Failed to create detour setup handle, invalid gamedata handle, invalid callback function or failed to find function in gamedata.
+ */
+native Handle DHookCreateFromConf(Handle gameconf, const char[] name, DHookCallback callback=INVALID_FUNCTION);
+
 /**
  * Load details for a vhook or detour from a gamedata file.
  *
@@ -246,7 +258,7 @@ native Handle DHookCreateDetour(Address funcaddr, CallingConvention callConv, Re
  * @param name			Name of the property to find.
  *
  * @return				True on success, false if nothing was found.
- * @error				Invalid setup handle.
+ * @error				Invalid setup or gamedata handle.
  */
 native bool DHookSetFromConf(Handle setup, Handle gameconf, SDKFuncConfSource source, const char[] name);