[tor-bugs] #6708 [Onionoo]: Pyonionoo returns code 500 for a few parameters

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#6708: Pyonionoo returns code 500 for a few parameters
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 Reporter:  karsten  |          Owner:  gsathya     
     Type:  defect   |         Status:  needs_review
 Priority:  normal   |      Milestone:              
Component:  Onionoo  |        Version:              
 Keywords:           |         Parent:              
   Points:           |   Actualpoints:              
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Comment(by karsten):

 Replying to [comment:5 gsathya]:
 > Please review my
 [https://github.com/gsathya/pyonionoo/compare/bug_6708_revised
 bug_6708_revised] branch. Thanks!

 Will try to have a look today.

 > Haven't added support for hashed fingerprint. Is this [...]

 It's neither of the two.  The "f204" part is hex-encoded, not
 base64-encoded.  A hashed fingerprint as produced by metrics-db uses the
 binary fingerprint as input, so you'll first have to decode that hex
 value.  Then you apply sha1 and encode the result in hex.  In Python,
 that's:

 {{{
 >>> from binascii import a2b_hex
 >>> from hashlib import sha1
 >>> sha1(a2b_hex("f2044413dac2e02e3d6bcf4735a19bca1de97281")).hexdigest()
 '16ef359c2fbf50fc08cf9a95717be3060575b67e'
 }}}

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6708#comment:7>
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