fix circular dependency

server/server.py

@@ -18,7 +18,7 @@ class Server:
         passphrase = input()
         self.auth = Authetication()
         self.networkInstance = NetWrapper(self.auth.loadUserPublicKeys(), self.auth.loadServerPrivateKey(passphrase),
-                                          self)
+                                          self.auth)
 
     def login(self, username: str, password: str) -> bool:
         self.isAuthenticated = True
@@ -30,6 +30,7 @@ class Server:
             return True
 
     def logout(self) -> None:
+        self.networkInstance.logout()
         self.isAuthenticated = False
         self.availableServer = False
         self.homeDirectory = ""
@@ -56,7 +57,13 @@ class Server:
     def execute(self, command: str, firstParam: str = "", secondParam: str = "") -> None:
         if self.homeDirectory == "" or self.executor.currentDirectory == "" or self.executor.baseDir == "":
             raise Exception("Directories must not be empty string. Did the user log in?")
-        if command == "MKD":
+        if command == "LOUT":
+            if secondParam != "" or firstParam != "":
+                self.networkInstance.sendMessage("ERROR".encode('UTF-8'))
+            else:
+                self.logout()
+                self.networkInstance.sendMessage("OK".encode('UTF-8'))
+        elif command == "MKD":
             if secondParam != "":
                 self.networkInstance.sendMessage("ERROR".encode('UTF-8'))
             else: