[tor-bugs] #23355 [Core Tor/Tor]: prop224: Implement a client purge state for NEWNYM

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#23355: prop224: Implement a client purge state for NEWNYM
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 Reporter:  dgoulet          |          Owner:  (none)
     Type:  enhancement      |         Status:  needs_review
 Priority:  High             |      Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor     |        Version:
 Severity:  Normal           |     Resolution:
 Keywords:  prop224, tor-hs  |  Actual Points:
Parent ID:  #23300           |         Points:
 Reviewer:  asn              |        Sponsor:
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Comment (by asn):

 Patch looks good. One thing makes me anxious: We call
 `DIGEST256MAP_FOREACH_MODIFY` on so many digestmaps without first checking
 that they are not-NULL. I don't think the `foreach` functions check for
 NULL before iterating which might cause segfaults. Shouldn't we check that
 the maps are non-NULL?

 Other than that, LGTM.

 Feel free to fix the above or not and then mark it as `merge_ready`.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23355#comment:2>
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