From 9d945a8a289fd86c36bea5dd6a7d83fdb46a60e7 Mon Sep 17 00:00:00 2001
From: Ben <ben@solero.me>
Date: Tue, 6 Aug 2019 22:55:26 +0100
Subject: [PATCH] Legacy client world authentication handler

---
 houdini/handlers/login/world.py | 40 +++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/houdini/handlers/login/world.py b/houdini/handlers/login/world.py
index 71fb68f..445a379 100644
--- a/houdini/handlers/login/world.py
+++ b/houdini/handlers/login/world.py
@@ -58,3 +58,43 @@ async def handle_login(p, credentials: WorldCredentials):
     p.data = data
     p.login_key = login_key
     await p.send_xt('l')
+
+
+@handlers.handler(XMLPacket('login'), client=ClientType.Legacy)
+@handlers.allow_once
+@handlers.depends_on_packet(XMLPacket('verChk'), XMLPacket('rndK'))
+async def handle_legacy_login(p, credentials: Credentials):
+    tr = p.server.redis.multi_exec()
+    tr.get('{}.lkey'.format(credentials.username))
+    tr.delete('{}.lkey'.format(credentials.username), '{}.ckey'.format(credentials.username))
+    login_key,  _ = await tr.execute()
+
+    login_key = login_key.decode()
+    login_hash = Crypto.encrypt_password(login_key + config.client['AuthStaticKey']) + login_key
+
+    if login_key is None or login_hash != credentials.password:
+        return await p.close()
+
+    data = await Penguin.query.where(Penguin.username == credentials.username).gino.first()
+
+    if data is None:
+        return await p.send_error_and_disconnect(100)
+
+    if not data.active:
+        return await p.close()
+
+    if data.permaban:
+        return await p.close()
+
+    active_ban = await Ban.query.where((Ban.penguin_id == data.id) & (Ban.expires >= datetime.now())).gino.scalar()
+    if active_ban is not None:
+        return await p.close()
+
+    if data.id in p.server.penguins_by_id:
+        await p.server.penguins_by_id[data.id].close()
+
+    p.logger.info('{} logged in successfully'.format(data.username))
+
+    p.data = data
+    p.login_key = login_key
+    await p.send_xt('l')