Add locks for g_connections

auth/server.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 from http import HTTPStatus
 from http.server import ThreadingHTTPServer, BaseHTTPRequestHandler
+from threading import Lock
 from urllib.parse import urlparse, parse_qs
 from configparser import ConfigParser
 from base64 import b64encode
@@ -8,7 +9,8 @@ from os.path import getmtime
 import json
 
 userdata = {}
-g_connections = {}
+_g_connections = {}
+_g_connections_lock = Lock()
 
 class HTTPRequestHandler(BaseHTTPRequestHandler):
     protocol_version = "HTTP/1.1"
@@ -134,7 +136,8 @@ class HTTPRequestHandler(BaseHTTPRequestHandler):
         token, profileId = params["sessionId"][0].split(":")[1:]
         serverId = params["serverId"][0]
 
-        g_connections[serverId] = profileId
+        with _g_connections_lock:
+            _g_connections[serverId] = profileId
 
         if True:
             self.send_ok(b"OK")
@@ -148,7 +151,8 @@ class HTTPRequestHandler(BaseHTTPRequestHandler):
         profileId = data["selectedProfile"]
         serverId = data["serverId"]
 
-        g_connections[serverId] = profileId
+        with _g_connections_lock:
+            _g_connections[serverId] = profileId
 
         if True:
             self.send_response(HTTPStatus.NO_CONTENT)
@@ -164,8 +168,11 @@ class HTTPRequestHandler(BaseHTTPRequestHandler):
         user = params["user"][0]
         serverId = params["serverId"][0]
 
-        if not serverId in g_connections:
-            self.send_ok(b"NO")
+        with _g_connections_lock:
+            if not serverId in _g_connections:
+                self.send_ok(b"NO")
+                return
+            del _g_connections[serverId]
 
         self.send_ok(b"YES")
 
@@ -173,11 +180,12 @@ class HTTPRequestHandler(BaseHTTPRequestHandler):
         serverId = params["serverId"][0]
         user = params["username"][0]
 
-        if not serverId in g_connections:
-            self.send_response(HTTPStatus.NO_CONTENT)
-            self.end_headers()
-
-        profileId = g_connections[serverId]
+        with _g_connections_lock:
+            if not serverId in _g_connections:
+                self.send_response(HTTPStatus.NO_CONTENT)
+                self.end_headers()
+            del _g_connections[serverId]
+            profileId = _g_connections[serverId]
 
         data = self.get_profile(profileId)
         if data is None: