Merge pull request #61 from TheTorProject/no-authority-measurements

Prevent authorities from being selected in the exit position

Author: aagbsn

bwscanner/circuit.py

@@ -26,7 +26,8 @@ def is_valid_exit(relay):
 
         TODO: Check the exit policy
         """
-        return ('exit' in relay.flags and 'badexit' not in relay.flags)
+        is_exit = ('exit' in relay.flags and 'badexit' not in relay.flags)
+        return is_exit and 'authority' not in relay.flags
 
 
 class ExitScan(CircuitGenerator):