stem_examples/src/stem_examples/compare_flags.py

# -*-mode: python; py-indent-offset: 2; indent-tabs-mode: nil; coding: utf-8-unix -*-
#
__doc__ = """
Compares the votes of two directory authorities, in this case moria1
and maatuska, with a special interest in the 'Running' flag.

broken because this site fails:
http://128.31.0.39:9131/tor/status-vote

https://stem.torproject.org/tutorials/examples/compare_flags.html
"""

import sys
import collections

import stem.descriptor
import stem.descriptor.remote
import stem.directory

from tor_controller import set_socks_proxy

def iMain():
    # Query all authority votes asynchronously.
    downloader = stem.descriptor.remote.DescriptorDownloader(
        document_handler = stem.descriptor.DocumentHandler.DOCUMENT,
        )

    # An ordered dictionary ensures queries are finished in the order they were
    # added.

    queries = collections.OrderedDict()

    for name, authority in stem.directory.Authority.from_cache().items():
        if authority.v3ident is None:
            continue  # authority doesn't vote if it lacks a v3ident

        queries[name] = downloader.get_vote(authority)

    # Wait for the votes to finish being downloaded, this produces a dictionary of
    # authority nicknames to their vote.

    votes = dict((name, query.run()[0]) for (name, query) in queries.items())

    # Get a superset of all the fingerprints in all the votes.

    all_fingerprints = set()

    for vote in votes.values():
        all_fingerprints.update(vote.routers.keys())

    # Finally, compare moria1's votes to maatuska's votes.

    for fingerprint in all_fingerprints:
        moria1_vote = votes['moria1'].routers.get(fingerprint)
        maatuska_vote = votes['maatuska'].routers.get(fingerprint)

        if not moria1_vote and not maatuska_vote:
            print("both moria1 and maatuska haven't voted about %s" % fingerprint)
        elif not moria1_vote:
            print("moria1 hasn't voted about %s" % fingerprint)
        elif not maatuska_vote:
            print("maatuska hasn't voted about %s" % fingerprint)
        elif 'Running' in moria1_vote.flags and 'Running' not in maatuska_vote.flags:
            print("moria1 has the Running flag but maatuska doesn't: %s" % fingerprint)
        elif 'Running' in maatuska_vote.flags and 'Running' not in moria1_vote.flags:
            print("maatuska has the Running flag but moria1 doesn't: %s" % fingerprint)

    return 0

if __name__ == '__main__':
    set_socks_proxy()
    sys.exit(iMain())