commit c26169071a6a5de9c9c5bf2e9ef185e84355ea9f Author: Damian Johnson atagar@torproject.org Date: Tue Mar 25 10:10:08 2014 -0700

Adding a 'Scripts' section to our examples page

Coderman suggested a cookbook section on #tor-dev. I like this idea. On occasion I write one-off scripts for specific tasks. These would make fantastic examples for new Stem users, so starting a section on our examples page for them.

I recall writing another script for 'list the contact information of all outdated relays' for a ticket. I'll dig that up later and add it. --- docs/contents.rst | 2 + docs/tutorials/double_double_toil_and_trouble.rst | 14 +++++ docs/tutorials/examples/compare_flags.rst | 60 +++++++++++++++++++++ 3 files changed, 76 insertions(+)

diff --git a/docs/contents.rst b/docs/contents.rst index fbb0ecd..d9b6159 100644 --- a/docs/contents.rst +++ b/docs/contents.rst @@ -12,6 +12,8 @@ Contents tutorials/mirror_mirror_on_the_wall tutorials/double_double_toil_and_trouble

+ tutorials/examples/compare_flags + change_log download

diff --git a/docs/tutorials/double_double_toil_and_trouble.rst b/docs/tutorials/double_double_toil_and_trouble.rst index 0da647a..3dabc1a 100644 --- a/docs/tutorials/double_double_toil_and_trouble.rst +++ b/docs/tutorials/double_double_toil_and_trouble.rst @@ -5,6 +5,9 @@ Below is a listing of scripts and applications that use Stem. If you have something you would like to have included on this page then `let me know https://www.atagar.com/contact/`_!

+Applications +============ + .. Image Sources:

* Arm @@ -47,3 +50,14 @@ something you would like to have included on this page then `let me know `ExitMap https://github.com/NullHypothesis/exitmap`_ Scanner for malicious or misconfigured Tor exits. =========================================================================================================== ==========

+Scripts +======= + +Descriptors +----------- + +* `Comparing Directory Authority Flags <examples/compare_flags.html>`_ + + Compares the votes of two directory authorities, in this case moria1 and + maatuska, with a special interest in the 'Running' flag. + diff --git a/docs/tutorials/examples/compare_flags.rst b/docs/tutorials/examples/compare_flags.rst new file mode 100644 index 0000000..b0f7fc6 --- /dev/null +++ b/docs/tutorials/examples/compare_flags.rst @@ -0,0 +1,60 @@ +Comparing Directory Authority Flags +=================================== + +Compares the votes of two directory authorities, in this case moria1 and +maatuska, with a special interest in the 'Running' flag. + +:: + + % python compare_flags.py + maatuska has the Running flag but moria1 doesn't: 92FCB6748A40E6088E22FBAB943AB2DD743EA818 + maatuska has the Running flag but moria1 doesn't: 6871F682350BA931838C0EC1E4A23044DAE06A73 + maatuska has the Running flag but moria1 doesn't: E2BB13AA2F6960CD93ABE5257A825687F3973C62 + moria1 has the Running flag but maatuska doesn't: 546C54E2A89D88E0794D04AECBF1AC8AC9DA81DE + moria1 has the Running flag but maatuska doesn't: DCAEC3D069DC39AAE43D13C8AF31B5645E05ED61 + ... + +:: + + from stem.descriptor import DocumentHandler, remote + + # Query all authority votes asynchronously. + + downloader = remote.DescriptorDownloader(document_handler = DocumentHandler.DOCUMENT) + queries = {} + + for name, authority in remote.get_authorities().items(): + if authority.v3ident is None: + continue # authority doens'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. + + 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 +