commit 5488849baaf2402a8a315d9d474dc69207b2e6ef Author: Damian Johnson atagar@torproject.org Date: Thu Dec 20 11:47:34 2018 -0800

Blank inputs cause server descriptor parsing to fail

Honestly I'm not digging in too much, but DocTor has started providing me with notifications of...

Unable to retrieve the present server descriptors...

source: http://204.13.164.118:80/tor/server/all time: 12/20/2018 11:44 error: Content conform to being a server descriptor:

We strip annotation whitespace if we have descritor content to parse but didn't if we didnn't. No reason I can think of to not do so in both cases. --- stem/descriptor/server_descriptor.py | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/stem/descriptor/server_descriptor.py b/stem/descriptor/server_descriptor.py index 89b80d0a..98300775 100644 --- a/stem/descriptor/server_descriptor.py +++ b/stem/descriptor/server_descriptor.py @@ -195,6 +195,9 @@ def _parse_file(descriptor_file, is_bridge = False, validate = False, **kwargs):

while True: annotations = _read_until_keywords('router', descriptor_file) + annotations = map(bytes.strip, annotations) # strip newlines + annotations = map(stem.util.str_tools._to_unicode, annotations) # convert to unicode + annotations = list(filter(lambda x: x != '', annotations)) # drop any blanks

if not is_bridge: descriptor_content = _read_until_keywords('router-signature', descriptor_file) @@ -210,9 +213,6 @@ def _parse_file(descriptor_file, is_bridge = False, validate = False, **kwargs): if descriptor_content[0].startswith(b'@type'): descriptor_content = descriptor_content[1:]

- # strip newlines from annotations - annotations = list(map(bytes.strip, annotations)) - descriptor_text = bytes.join(b'', descriptor_content)

if is_bridge: @@ -221,8 +221,7 @@ def _parse_file(descriptor_file, is_bridge = False, validate = False, **kwargs): yield RelayDescriptor(descriptor_text, validate, annotations, **kwargs) else: if validate and annotations: - orphaned_annotations = stem.util.str_tools._to_unicode(b'\n'.join(annotations)) - raise ValueError('Content conform to being a server descriptor:\n%s' % orphaned_annotations) + raise ValueError('Content conform to being a server descriptor:\n%s' % '\n'.join(annotations))

break # done parsing descriptors