[tor-bugs] #21304 [Obfuscation/Snowflake]: Sanitize snowflake.log

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#21304: Sanitize snowflake.log
-----------------------------------+--------------------------
 Reporter:  arlolra                |          Owner:  cohosh
     Type:  defect                 |         Status:  assigned
 Priority:  Medium                 |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Normal                 |     Resolution:
 Keywords:  starter                |  Actual Points:
Parent ID:                         |         Points:  1
 Reviewer:                         |        Sponsor:
-----------------------------------+--------------------------

Comment (by cohosh):

 I've implemented a log scrubber that sends all log output through a series
 of regular expressions to replace IPv4 and IPv6 addresses with safe
 strings ({{{X.X.X.X}}} and {{{X:X:X:X:X:X:X:X}}}, respectively). Here is
 the commit:
 https://github.com/cohosh/snowflake/commit/e5dda8a3d526b692712baa4e8602b4248ea38376

 The http server panic mentioned above is solved in this way, since the
 server is set up to log messages to the default logger (set up in
 server.go to output to the provided log file). If the code is ever changed
 to give the http.Server structs created in server.go their own logger,
 we'll need to make sure we add a scrubber to the logger.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21304#comment:10>
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