Tom Lane fc752505a9 Fix assorted issues in client host name lookup. ... The code for matching clients to pg_hba.conf lines that specify host names (instead of IP address ranges) failed to complain if reverse DNS lookup failed; instead it silently didn't match, so that you might end up getting a surprising "no pg_hba.conf entry for ..." error, as seen in bug #9518 from Mike Blackwell. Since we don't want to make this a fatal error in situations where pg_hba.conf contains a mixture of host names and IP addresses (clients matching one of the numeric entries should not have to have rDNS data), remember the lookup failure and mention it as DETAIL if we get to "no pg_hba.conf entry". Apply the same approach to forward-DNS lookup failures, too, rather than treating them as immediate hard errors. Along the way, fix a couple of bugs that prevented us from detecting an rDNS lookup error reliably, and make sure that we make only one rDNS lookup attempt; formerly, if the lookup attempt failed, the code would try again for each host name entry in pg_hba.conf. Since more or less the whole point of this design is to ensure there's only one lookup attempt not one per entry, the latter point represents a performance bug that seems sufficient justification for back-patching. Also, adjust src/port/getaddrinfo.c so that it plays as well as it can with this code. Which is not all that well, since it does not have actual support for rDNS lookup, but at least it should return the expected (and required by spec) error codes so that the main code correctly perceives the lack of functionality as a lookup failure. It's unlikely that PG is still being used in production on any machines that require our getaddrinfo.c, so I'm not excited about working harder than this. To keep the code in the various branches similar, this includes back-patching commits c424d0d105 and 1997f34db4 into 9.2 and earlier. Back-patch to 9.1 where the facility for hostnames in pg_hba.conf was introduced.		2014-04-02 17:11:24 -04:00
..
backend	Fix assorted issues in client host name lookup.	2014-04-02 17:11:24 -04:00
bin	psql: display "Replica Identity" only for FULL and NOTHING	2014-03-29 19:00:11 -04:00
common	Un-break peer authentication.	2014-03-28 10:30:37 -04:00
include	Fix assorted issues in client host name lookup.	2014-04-02 17:11:24 -04:00
interfaces	libpq: pass a memory allocation failure error up to PQconndefaults()	2014-03-20 11:48:31 -04:00
makefiles	Flush a stray definition of $(DLLTOOL).	2014-02-11 12:59:48 -05:00
pl	Fix refcounting bug in PLy_modify_tuple().	2014-03-26 16:41:32 -04:00
port	Fix assorted issues in client host name lookup.	2014-04-02 17:11:24 -04:00
template	Revert to using --enable-auto-import in Cygwin builds.	2014-02-16 15:14:04 -05:00
test	psql: display "Replica Identity" only for FULL and NOTHING	2014-03-29 19:00:11 -04:00
timezone	Update time zone data files to tzdata release 2014a.	2014-03-15 13:36:07 -04:00
tools	Allow logical decoding via the walsender interface.	2014-03-10 13:50:28 -04:00
tutorial	Rename 'gmake' to 'make' in docs and recommended commands	2014-02-12 17:29:19 -05:00
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
bcc32.mak	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00
DEVELOPERS
Makefile	Create libpgcommon, and move pg_malloc et al to it	2013-02-12 11:21:05 -03:00
Makefile.global.in	Introduce logical decoding.	2014-03-03 16:32:18 -05:00
Makefile.shlib	Tweak position of $(DLL_DEFFILE) in shared-library link commands.	2014-02-12 11:22:23 -05:00
nls-global.mk	Setup error context callback for transaction lock waits	2014-03-19 15:10:36 -03:00
win32.mak	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00