Fix intermediate session id preauth tracking

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## 1.10.1 - TBD
 
 * Raise the original `BadNetworkName` error if the server doesn't indicate it supports DFS or `FSDriverRequired` was raised trying to lookup the DFS information - https://github.com/jborean93/smbprotocol/issues/196
+* Fix pre auth session id tracking if the intermediate token messages return 0 as the session id
 
 ## 1.10.0 - 2022-11-07
 

requirements-dev.txt

@@ -7,4 +7,4 @@ pyspnego
 pytest
 pytest-cov
 pytest-mock
-tox
+tox

src/smbprotocol/session.py

@@ -276,6 +276,7 @@ def connect(self):
             raise SMBAuthenticationError("Failed to authenticate with server: %s" % str(err.message))
 
         self.connection.preauth_session_table[self.session_id] = self
+
         in_token = self.connection.gss_negotiate_token
         if self.auth_protocol != "negotiate":
             in_token = None  # The GSS Negotiate Token can only be used for Negotiate auth.
@@ -307,11 +308,11 @@ def connect(self):
             # If this is the first time we received the actual session_id, update the preauth table with the server
             # assigned id.
             session_id = response["session_id"].get_value()
-            if self.session_id < 0:
+            if self.session_id < 0 and session_id:
                 del self.connection.preauth_session_table[self.session_id]
                 self.connection.preauth_session_table[session_id] = self
 
-            self.session_id = session_id
+                self.session_id = session_id
 
             setup_response = SMB2SessionSetupResponse()
             setup_response.unpack(response["data"].get_value())