Dynamic packet payloads

dpnet/netserver.py

@@ -9,6 +9,7 @@ import socket
 import threading
 import traceback
 import uuid
+import struct
 from utils.logger import setup_logger
 from giants.player import Player
 
@@ -76,7 +77,7 @@ class Netserver:
                 er.ApplicationGUID = eq.ApplicationGUID
                 er.ApplicationReservedData = b'\xff'  # Map ID
                 er.ApplicationReservedData += b'\x00\x04\x00' # game type and teams
-                er.ApplicationReservedData += b'\xd9\x05'  # game version
+                er.ApplicationReservedData += struct.pack("<L", int(self.server.version*1000))  # game version
                 er.ApplicationReservedData += b'\x02\x92\x05\x00\x01\x00\x00\x00\x00\x00'  # Unknown
                 er.ApplicationReservedData += b'\x9c\x53\xf4\xde'  # Seems to be a checksum of current map
                 # \x00\x00\x00\x00: [None]
@@ -282,49 +283,15 @@ class Netserver:
                 payload.putLong(0)  # unknown
             payload.write((name + "\x00").encode("utf-16-le"))
             payload.write(b'\xff')  # map ID
-            payload.write(b'\x08')  # game type
+            payload.putByte(self.server.game_type)  # game type
-            # 00: Team Deathmatch
+            payload.putByte(self.server.teams) # teams
-            # 01: Team Deathmatch with full base
-            # 02: Capture Smartie
-            # 03: Capture Smartie with full base
-            # 04: Base Build Deathmatch
-            # 05: Base Build and Capture the Smartie
-            # 06: Defend Base
-            # 07: Defend Base and Capture the Smartie
-            # 08: GTypeStone
-            # 09: GTypeWood
-            # 0a: crash to desktop
-            # 0b: crash to desktop
-            # 0c: GType(null)
-            # 0d: crash to desktop
-            # 0e: crash to desktop
-            # 0f: crash to desktop
-            # 10: crash to desktop
-            # feel free to try other values...
-            # aa: crash to desktop
-            # ff: crash to desktop
-
-            payload.write(b'\x00') # teams
-            # 00: MvM
-            # 01: MvMvM
-            # 02: RvR
-            # 03: MvR
-            # 04: MvRvK
-            # 05: MvK
-            # 06: RvK
-            # 07: ? Team B
-            # 08: ? Team B
-            # feel free to try other values...
-            # 10: ? Team B
-            # 0c: ? Team B
-            # 5a: crash to desktop
             payload.write(b'\xcc') # original: 0x00 - does not seem to affect client
-            payload.write(b'\xd9\x05') # game version
+            payload.putShort(int(self.server.version*1000))
             payload.write(b'\x03\x90') # original: 0292 - does not seem to affect client
-            payload.write(b'\x05\x00') # points per capture
+            payload.putShort(self.server.points_per_capture)
-            payload.write(b'\x01\x00') # points per kill
+            payload.putShort(self.server.points_per_kill)
             payload.write(b'\xff\xff') # original: 0000 - does not seem to affect client
-            payload.write(b'\x00\x00') # détente time
+            payload.putShort(self.server.detente_time)
             payload.write(b'\x9c\x53\xf4\xdf')  # Seems to be a checksum of current map OR linked to the number of chars in the map name
             payload.write(self.server.currentmap.mapname.encode("ascii"))
             payload.write(b'\x00' * (32 - len(self.server.currentmap.mapname)))

giants/__init__.py

@@ -1,4 +1,18 @@
 class Teams:
+    # 00: MvM
+    # 01: MvMvM
+    # 02: RvR
+    # 03: MvR
+    # 04: MvRvK
+    # 05: MvK
+    # 06: RvK
+    # 07: ? Team B
+    # 08: ? Team B
+    # feel free to try other values...
+    # 10: ? Team B
+    # 0c: ? Team B
+    # 5a: crash to desktop
+
     MvM = 0x00
     MvMvM = 0x01
     RvR = 0x02
@@ -11,6 +25,27 @@ class Teams:
 
 
 class GameTypes:
+    # 00: Team Deathmatch
+    # 01: Team Deathmatch with full base
+    # 02: Capture Smartie
+    # 03: Capture Smartie with full base
+    # 04: Base Build Deathmatch
+    # 05: Base Build and Capture the Smartie
+    # 06: Defend Base
+    # 07: Defend Base and Capture the Smartie
+    # 08: GTypeStone
+    # 09: GTypeWood
+    # 0a: crash to desktop
+    # 0b: crash to desktop
+    # 0c: GType(null)
+    # 0d: crash to desktop
+    # 0e: crash to desktop
+    # 0f: crash to desktop
+    # 10: crash to desktop
+    # feel free to try other values...
+    # aa: crash to desktop
+    # ff: crash to desktop
+
     TeamDeathmatch = 0x00
     TeamDeathmatchWithFullBase = 0x01
     CaptureSmartie = 0x02

giants/masterserver.py

@@ -1,6 +1,9 @@
 import socket
 from dpnet.packet import Packet
 import threading
+from utils.logger import setup_logger
+
+logger = setup_logger(__name__)
 
 
 class MasterServer:
@@ -17,8 +20,8 @@ class MasterServer:
 
     def register_and_run(self):
         self.socket.bind((self.server.listen_ip, 8911))
-        print("Listening to " + self.server.listen_ip + ":" + str(8911))
+        logger.info("Listening to " + self.server.listen_ip + ":" + str(8911))
-        print("Registering to Master Server")
+        logger.info("Registering to Master Server")
         self._register()
         self.keepalive()
         self.handle_packets()
@@ -42,7 +45,7 @@ class MasterServer:
             print("Received command:", command)
             if command == "\\status\\":
                 resp = Packet()
-                respstr = "\\gamename\\giants\\gamever\\1.497\\hostname\\" + self.server.name + "\\hostport\\" + str(
+                respstr = "\\gamename\\giants\\gamever\\"+str(self.server.version)+"\\hostname\\" + self.server.name + "\\hostport\\" + str(
                     self.server.listen_port) + "\\mapname\\" + self.server.currentmap.mapname + "\\gametype\\Capture Smartie with full base\\numplayers\\" + str(
                     len(self.server.players)) + "\\maxplayers\\" + str(
                     self.server.maxplayers) + "\\gamemode\\openplaying\\timelimit\\60\\fraglimit\\0\\teamfraglimit\\0\\firstbasecomplete\\0\\player_0\\Amazed\\frags_0\\0\\deaths_0\\0\\ping_0\\0\\team_0\\Green\\final\\\\queryid\\2.1"

server.py

@@ -27,6 +27,10 @@ class Server:
         self.register_with_ms = kwargs.get("register", False)
         self.teams = kwargs.get("teams", Teams.MvM)
         self.game_type = kwargs.get("gametype", GameTypes.TeamDeathmatchWithFullBase)
+        self.version = 1.497
+        self.points_per_kill = 1
+        self.points_per_capture = 5
+        self.detente_time = 0 # minutes
         self._plugins = []
 
     def add_player(self, player):