commit 0d357a9d6687afedbe9ad7509ced1797d1129cdf Author: Damian Johnson atagar@torproject.org Date: Tue Apr 15 09:45:45 2014 -0700

Invalid event types caused add_event_listener() error

When presented with invalid or unrecognized event types our add_event_listener() is documented as raising a ProtocolError. However, it caused a KeyError instead...

>>> SETEVENTS BW,DEBUG Traceback (most recent call last): File "./prompt", line 8, in <module> stem.interpretor.main() File "/home/atagar/Desktop/stem/stem/interpretor/__init__.py", line 67, in main print interpretor.run_command(user_input) File "/home/atagar/Desktop/stem/stem/interpretor/commands.py", line 449, in run_command self.controller.add_event_listener(self.register_event, *events) File "/home/atagar/Desktop/stem/stem/control.py", line 1920, in add_event_listener event_version = stem.response.events.EVENT_TYPE_TO_CLASS[event_type]._VERSION_ADDED KeyError: 'BW,DEBUG'

Skipping the version check if we don't have a class for the event type. This both fixes invalid events, and also allows us to proper new event types that Stem doesn't recognize yet.

>>> SETEVENTS BW,DEBUG SETEVENTS rejected BW,DEBUG --- stem/control.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/stem/control.py b/stem/control.py index 6630762..3064e81 100644 --- a/stem/control.py +++ b/stem/control.py @@ -1917,10 +1917,10 @@ class Controller(BaseController): with self._event_listeners_lock: if self.is_authenticated(): for event_type in events: - event_version = stem.response.events.EVENT_TYPE_TO_CLASS[event_type]._VERSION_ADDED + event_type = stem.response.events.EVENT_TYPE_TO_CLASS.get(event_type)

- if self.get_version() < event_version: - raise stem.InvalidRequest(552, "%s event requires Tor version %s or later" % (event_type, event_version)) + if event_type and (self.get_version() < event_type._VERSION_ADDED): + raise stem.InvalidRequest(552, "%s event requires Tor version %s or later" % (event_type, event_type._VERSION_ADDED))

for event_type in events: self._event_listeners.setdefault(event_type, []).append(listener)