Horton

Don't set PAM_RHOST for Unix sockets.

Thomas Munro <tmunro@postgresql.org>

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Commit: 0f9cdd7dca694d487ab663d463b308919f591c02
Author: Thomas Munro <tmunro@postgresql.org>
Date: 2018-11-28T01:12:30Z
Releases: 12.0 
Don't set PAM_RHOST for Unix sockets.

Since commit 2f1d2b7a we have set PAM_RHOST to "[local]" for Unix
sockets.  This caused Linux PAM's libaudit integration to make DNS
requests for that name.  It's not exactly clear what value PAM_RHOST
should have in that case, but it seems clear that we shouldn't set it
to an unresolvable name, so don't do that.

Back-patch to 9.6.  Bug #15520.

Author: Thomas Munro
Reviewed-by: Peter Eisentraut
Reported-by: Albert Schabhuetl
Discussion: https://postgr.es/m/15520-4c266f986998e1c5%40postgresql.org

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PathChange+/−
src/backend/libpq/auth.c modified +30 −20

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