commit da4550ddf5b4d29d05876c15dbda52713817984e Author: Damian Johnson atagar@torproject.org Date: Sat Apr 25 18:38:07 2015 -0700

Fix handling for HS_DESC_CONTENT without descriptors

When you issue a HSFETCH for something that doesn't exist tor provides a HS_DESC_CONTENT without a descriptor. This is great, but we didn't properly handle it. Also, we didn't strip the 'OK' at the end before attempting to parse the descriptor content. --- stem/response/events.py | 10 +++++++--- test/unit/response/events.py | 17 +++++++++++++++++ 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/stem/response/events.py b/stem/response/events.py index 47d6a0f..438d1e5 100644 --- a/stem/response/events.py +++ b/stem/response/events.py @@ -691,9 +691,13 @@ class HSDescContentEvent(Event): except stem.ProtocolError: raise stem.ProtocolError("HS_DESC_CONTENT's directory doesn't match a ServerSpec: %s" % self)

- self.descriptor = list(stem.descriptor.hidden_service_descriptor._parse_file( - io.BytesIO(str_tools._to_bytes('\n'.join(str(self).splitlines()[1:]))), - ))[0] + # skip the first line (our positional arguments) and last ('OK') + + desc_content = str_tools._to_bytes('\n'.join(str(self).splitlines()[1:-1])) + self.descriptor = None + + if desc_content: + self.descriptor = list(stem.descriptor.hidden_service_descriptor._parse_file(io.BytesIO(desc_content)))[0]

class LogEvent(Event): diff --git a/test/unit/response/events.py b/test/unit/response/events.py index 2797a02..756e531 100644 --- a/test/unit/response/events.py +++ b/test/unit/response/events.py @@ -274,6 +274,13 @@ nHIs1lSrV7Ux2WQ3qSVj505fTGSCmaQRBX726ZlTPW0= 650 OK """

+HS_DESC_CONTENT_EMPTY_EVENT = """\ +650+HS_DESC_CONTENT 3g2upl4pq6kufc4n 255tjwttk3wi7r2df57nuprs72j2daa3 $D7A0C3262724F2BC9646F6836E967A2777A3AF83~tsunaminitor + +. +650 OK +""" + # NEWCONSENSUS event from v0.2.1.30.

NEWCONSENSUS_EVENT = """650+NEWCONSENSUS @@ -886,6 +893,16 @@ class TestEvents(unittest.TestCase): self.assertEqual(3, len(desc.introduction_points())) self.assertTrue('s9Z0zWHsoPu' in desc.signature)

+ event = _get_event(HS_DESC_CONTENT_EMPTY_EVENT) + + self.assertTrue(isinstance(event, stem.response.events.HSDescContentEvent)) + self.assertEqual('3g2upl4pq6kufc4n', event.address) + self.assertEqual('255tjwttk3wi7r2df57nuprs72j2daa3', event.descriptor_id) + self.assertEqual('$D7A0C3262724F2BC9646F6836E967A2777A3AF83~tsunaminitor', event.directory) + self.assertEqual('D7A0C3262724F2BC9646F6836E967A2777A3AF83', event.directory_fingerprint) + self.assertEqual('tsunaminitor', event.directory_nickname) + self.assertEqual(None, event.descriptor) + def test_newdesc_event(self): event = _get_event(NEWDESC_SINGLE) expected_relays = (('B3FA3110CC6F42443F039220C134CBD2FC4F0493', 'Sakura'),)