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Allow records to span multiple lines in pg_hba.conf and pg_ident.conf.

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A backslash at the end of a line now causes the next line to be appended
to the current one (effectively, the backslash and newline are discarded).
This allows long HBA entries to be created without legibility problems.

While we're here, get rid of the former hard-wired length limit on
pg_hba.conf lines, by using an expansible StringInfo buffer instead
of a fixed-size local variable.

Since the same code is used to read the ident map file, these changes
apply there as well.

Fabien Coelho, reviewed by Justin Pryzby and David Zhang

Discussion: https://postgr.es/m/alpine.DEB.2.21.2003251906140.15243@pseudo
This commit is contained in:
Tom Lane
2020-09-03 12:16:48 -04:00
parent d2511d7132
commit 8f8154a503
3 changed files with 76 additions and 39 deletions
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3
src/test/authentication/t/001_password.pl
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@@ -29,7 +29,8 @@ sub reset_pg_hba
my $hba_method = shift;
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf', "local all all $hba_method");
# just for testing purposes, use a continuation line
$node->append_conf('pg_hba.conf', "local all all\\\n $hba_method");
$node->reload;
return;
}