https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7338
Bug ID: 7338
Summary: Unexpected parenthesis in DNS RR
Product: Spamassassin
Version: 3.4.1
Hardware: PC
OS: Linux
Status: NEW
Severity: minor
Priority: P2
Component: Plugins
Assignee: [email protected]
Reporter: [email protected]
In module URIDNSBL.pm
When Net::DNS returns a resource record, especially for domains with really
long names, the RR has parentheses in the results. Routines complete_ns_lookup
and complete_a_lookup don't handle the parentheses very well.
For example:
Instead of returning
hostname.org. IN A 192.168.0.1
sometimes a result returns:
hostname.org. IN A ( 192.168.0.1 )
My fix was to remove the parentheses:
*** URIDNSBL.pm.orig 2016-08-02 14:37:56.131847168 -0400
--- URIDNSBL.pm 2016-08-02 15:12:28.534143316 -0400
***************
*** 942,947 ****
--- 942,948 ----
next unless (defined($str) && defined($dom));
dbg("uridnsbl: got($j) NS for $dom: $str");
+ $str =~ s/[()]//g;
if ($str =~ /IN\s+NS\s+(\S+)/) {
my $nsmatch = lc $1;
$nsmatch =~ s/\.$//;
***************
*** 1026,1031 ****
--- 1027,1033 ----
dbg("uridnsbl: complete_a_lookup got(%d) A for %s: %s", $j,$hname,$str);
local $1;
+ $str =~ s/[()]//g;
if ($str =~ /IN\s+A\s+(\S+)/) {
$self->lookup_dnsbl_for_ip($pms, $ent->{obj}, $1);
}
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