Initial support for multiple clients and cross-client play

bootstrap.py

@@ -6,6 +6,7 @@ import config
 from houdini.houdini import Houdini
 from houdini import ConflictResolution
 from houdini import Language
+from houdini import ClientType
 
 if __name__ == '__main__':
     logger = logging.getLogger('houdini')
@@ -81,6 +82,33 @@ if __name__ == '__main__':
     command_group.add_argument('-ccm', '--command-conflict-mode', action='store', dest='command_conflict_mode',
                                default=config.commands['ConflictMode'].name,
                                help='Command conflict mode', choices=['Silent', 'Append', 'Exception'])
+
+    client_group = parser.add_argument_group('client')
+    client_mode = client_group.add_mutually_exclusive_group()
+    client_mode.add_argument('--multi-client-mode', action='store_true',
+                              help='Run server with support for both clients')
+    client_mode.add_argument('--single-client-mode', action='store_true',
+                              help='Run server with support for default client only')
+    client_group.add_argument('--legacy-version', action='store',
+                              type=int,
+                              default=config.client['LegacyVersionChk'],
+                              help='Legacy client version to identify legacy clients')
+    client_group.add_argument('--vanilla-version', action='store',
+                              type=int,
+                              default=config.client['VanillaVersionChk'],
+                              help='Vanilla client version to identify vanilla clients')
+    client_group.add_argument('--default-version', action='store',
+                              type=int,
+                              default=config.client['DefaultVersionChk'],
+                              help='Default version to identify clients when multi-client is off')
+    client_group.add_argument('--default-client', action='store',
+                              choices=['Legacy', 'Vanilla'],
+                              default=config.client['DefaultClientType'].name,
+                              help='Default client when multi-client is off')
+    client_group.add_argument('-k', '--auth-key', action='store',
+                              default='houdini',
+                              help='Static key to use in place of the deprecated random key')
+
     args = parser.parse_args()
 
     database = {
@@ -101,6 +129,18 @@ if __name__ == '__main__':
         'ConflictMode': getattr(ConflictResolution, args.command_conflict_mode)
     }
 
+    client = {
+        'MultiClientSupport': True if args.multi_client_mode else False if args.single_client_mode
+        else config.client['MultiClientSupport'],
+        'LegacyVersionChk': args.legacy_version,
+        'VanillaVersionChk': args.vanilla_version,
+
+        'DefaultVersionChk': args.default_version,
+        'DefaultClientType': getattr(ClientType, args.default_client),
+
+        'AuthStaticKey': args.auth_key
+    }
+
     server = {
         'Address': args.address or config.servers[args.server]['Address'],
         'Port': args.port or config.servers[args.server]['Port'],
@@ -129,6 +169,7 @@ if __name__ == '__main__':
                                database=database,
                                redis=redis,
                                commands=commands,
+                               client=client,
                                server=server)
     try:
         asyncio.run(factory_instance.start())

houdini/handlers/__init__.py

@@ -3,6 +3,7 @@ import enum
 import itertools
 import importlib
 import sys
+import config
 from types import FunctionType
 
 from houdini.converters import _listener, _ArgumentDeserializer, get_converter, do_conversion, _ConverterContext
@@ -51,7 +52,7 @@ class Priority(enum.Enum):
 
 class _Listener(_ArgumentDeserializer):
 
-    __slots__ = ['priority', 'packet', 'overrides', 'before', 'after']
+    __slots__ = ['priority', 'packet', 'overrides', 'before', 'after', 'client_type']
 
     def __init__(self, packet, callback, **kwargs):
         super().__init__(packet.id, callback, **kwargs)
@@ -60,6 +61,7 @@ class _Listener(_ArgumentDeserializer):
         self.priority = kwargs.get('priority', Priority.Low)
         self.before = kwargs.get('before')
         self.after = kwargs.get('after')
+        self.client_type = kwargs.get('client')
 
         self.overrides = kwargs.get('overrides', [])
 

houdini/handlers/login/__init__.py

@@ -1,6 +1,6 @@
 import config
 
-from houdini import handlers
+from houdini import handlers, ClientType
 from houdini.handlers import XMLPacket
 from houdini.converters import VersionChkConverter
 
@@ -10,7 +10,15 @@ from houdini.data.buddy import BuddyList
 @handlers.handler(XMLPacket('verChk'))
 @handlers.allow_once
 async def handle_version_check(p, version: VersionChkConverter):
-    if not version == 153:
+    if config.client['MultiClientSupport']:
+        if config.client['LegacyVersionChk'] == version:
+            p.client_type = ClientType.Legacy
+        elif config.client['VanillaVersionChk'] == version:
+            p.client_type = ClientType.Vanilla
+    elif config.client['DefaultVersionChk'] == version:
+        p.client_type = config.client['DefaultClientType']
+
+    if p.client_type is None:
         await p.send_xml({'body': {'action': 'apiKO', 'r': '0'}})
         await p.close()
     else:
@@ -20,7 +28,7 @@ async def handle_version_check(p, version: VersionChkConverter):
 @handlers.handler(XMLPacket('rndK'))
 @handlers.allow_once
 async def handle_random_key(p, data):
-    await p.send_xml({'body': {'action': 'rndK', 'r': '-1'}, 'k': 'houdini'})
+    await p.send_xml({'body': {'action': 'rndK', 'r': '-1'}, 'k': config.client['AuthStaticKey']})
 
 
 async def get_server_presence(p, pid):

houdini/handlers/login/login.py

@@ -1,4 +1,4 @@
-from houdini import handlers
+from houdini import handlers, ClientType
 from houdini.handlers import XMLPacket, login
 from houdini.handlers.login import get_server_presence
 from houdini.converters import Credentials
@@ -27,7 +27,7 @@ async def handle_login(p, credentials: Credentials):
     data = await Penguin.query.where(Penguin.username == username).gino.first()
 
     if data is None:
-        p.logger.info('{} failed to login: penguin does not exist')
+        p.logger.info('{} failed to login: penguin does not exist'.format(username))
         return await p.send_error_and_disconnect(100)
 
     password_correct = await loop.run_in_executor(None, bcrypt.checkpw,
@@ -84,16 +84,19 @@ async def handle_login(p, credentials: Credentials):
     confirmation_hash = Crypto.hash(os.urandom(24))
 
     tr = p.server.redis.multi_exec()
-    tr.setex('{}.lkey'.format(data.id), p.server.server_config['KeyTTL'], login_key)
+    tr.setex('{}.lkey'.format(data.username), p.server.server_config['KeyTTL'], login_key)
-    tr.setex('{}.ckey'.format(data.id), p.server.server_config['KeyTTL'], confirmation_hash)
+    tr.setex('{}.ckey'.format(data.username), p.server.server_config['KeyTTL'], confirmation_hash)
     await tr.execute()
 
     world_populations, buddy_presence = await get_server_presence(p, data.id)
 
+    if p.client_type == ClientType.Vanilla:
         raw_login_data = '|'.join([str(data.id), str(data.id), data.username, login_key, str(data.approval),
                                    str(data.rejection)])
         await p.send_xt('l', raw_login_data, confirmation_hash, '', world_populations, buddy_presence,
                         data.email)
+    else:
+        await p.send_xt('l', data.id, login_key, world_populations, buddy_presence)
 
 handle_version_check = login.handle_version_check
 handle_random_key = login.handle_random_key

houdini/handlers/login/world.py

@@ -1,8 +1,11 @@
-from houdini import handlers
+import config
+
+from houdini import handlers, ClientType
 from houdini.handlers import XMLPacket, login
-from houdini.converters import WorldCredentials
+from houdini.converters import WorldCredentials, Credentials
 from houdini.data.penguin import Penguin
 from houdini.data.moderator import Ban
+from houdini.crypto import Crypto
 
 from datetime import datetime
 
@@ -10,20 +13,26 @@ handle_version_check = login.handle_version_check
 handle_random_key = login.handle_random_key
 
 
-@handlers.handler(XMLPacket('login'))
+@handlers.handler(XMLPacket('login'), client=ClientType.Vanilla)
 @handlers.allow_once
 @handlers.depends_on_packet(XMLPacket('verChk'), XMLPacket('rndK'))
 async def handle_login(p, credentials: WorldCredentials):
     tr = p.server.redis.multi_exec()
-    tr.get('{}.lkey'.format(credentials.id))
+    tr.get('{}.lkey'.format(credentials.username))
-    tr.get('{}.ckey'.format(credentials.id))
+    tr.get('{}.ckey'.format(credentials.username))
-    tr.delete('{}.lkey'.format(credentials.id), '{}.ckey'.format(credentials.id))
+    tr.delete('{}.lkey'.format(credentials.username), '{}.ckey'.format(credentials.username))
     login_key, confirmation_hash, _ = await tr.execute()
 
     if login_key is None or confirmation_hash is None:
         return await p.close()
 
-    if login_key.decode() != credentials.login_key or confirmation_hash.decode() != credentials.confirmation_hash:
+    login_key = login_key.decode()
+    login_hash = Crypto.encrypt_password(login_key + config.client['AuthStaticKey']) + login_key
+
+    if credentials.client_key != login_hash:
+        return await p.close()
+
+    if login_key != credentials.login_key or confirmation_hash.decode() != credentials.confirmation_hash:
         return await p.close()
 
     data = await Penguin.get(credentials.id)
@@ -47,5 +56,5 @@ async def handle_login(p, credentials: WorldCredentials):
     p.logger.info('{} logged in successfully'.format(data.username))
 
     p.data = data
-    p.login_key = credentials.login_key
+    p.login_key = login_key
     await p.send_xt('l')

houdini/houdini.py

@@ -58,6 +58,7 @@ class Houdini:
         self.database_config_override = kwargs.get('database')
         self.redis_config_override = kwargs.get('redis')
         self.commands_config_override = kwargs.get('commands')
+        self.client_config_override = kwargs.get('client')
         self.server_config_override = kwargs.get('server')
         self.server_config = None
 
@@ -100,6 +101,7 @@ class Houdini:
         self.config.database.update(self.database_config_override)
         self.config.redis.update(self.redis_config_override)
         self.config.commands.update(self.commands_config_override)
+        self.config.client.update(self.client_config_override)
 
         general_log_directory = os.path.dirname(self.server_config["Logging"]["General"])
         errors_log_directory = os.path.dirname(self.server_config["Logging"]["Errors"])
@@ -215,8 +217,14 @@ class Houdini:
         self.configure_observers([handlers_path, ListenerFileEventHandler],
                                  [plugins_path, PluginFileEventHandler])
 
+        self.logger.info('Multi-client support is {}'.format(
+            'enabled' if self.config.client['MultiClientSupport'] else 'disabled'))
         self.logger.info('Listening on {}:{}'.format(self.server_config['Address'], self.server_config['Port']))
 
+        if self.config.client['AuthStaticKey'] != 'houdini':
+            self.logger.warning('The static key has been changed from the default, '
+                                'this may cause authentication issues!')
+
         self.plugins.setup(houdini.plugins)
 
         async with self.server:

houdini/spheniscidae.py

@@ -13,7 +13,8 @@ from houdini.cooldown import CooldownError
 class Spheniscidae:
 
     __slots__ = ['__reader', '__writer', 'server', 'logger',
-                 'peer_name', 'received_packets', 'joined_world']
+                 'peer_name', 'received_packets', 'joined_world',
+                 'client_type']
 
     Delimiter = b'\x00'
 
@@ -28,6 +29,7 @@ class Spheniscidae:
         self.server.peers_by_ip[self.peer_name] = self
 
         self.joined_world = False
+        self.client_type = None
 
         self.received_packets = set()
 
@@ -93,6 +95,7 @@ class Spheniscidae:
             packet_data = parsed_data[4:]
 
             for listener in xt_listeners:
+                if listener.client_type is None or listener.client_type == self.client_type:
                     await listener(self, packet_data)
             self.received_packets.add(packet)
         else:
@@ -118,6 +121,7 @@ class Spheniscidae:
                     xml_listeners = self.server.xml_listeners[packet]
 
                     for listener in xml_listeners:
+                        if listener.client_type is None or listener.client_type == self.client_type:
                             await listener(self, body_tag)
 
                     self.received_packets.add(packet)