#!/usr/bin/perl -w
# Copyright (C) 2003 Paul T. Jobson
# pjobson@visual-e.net
# aim: vbrtrmn
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# The GNU General Public License is available here:
# http://www.gnu.org/copyleft/gpl.html#SEC3
##################################################################
# digger.cgi
# Program for doing recursive dig requests, used to find DNS
# propagation issues.
$| = 1;
use strict;
use CGI qw(:all);
use CGI::Carp('fatalsToBrowser');
my ($digdata,@NSlist,$nextlevel,$hostin,$gtld);
my $pass = param('password');
my $host = param('host');
push(@NSlist,param('gtld'));
my $sent = "false";
&doHTMLStart;
&checkforErrors;
&startDigLoop;
&doHTMLEnd;
sub startDigLoop {
print "
Attempting to Query $host at every Name Server in the returned Zone Files.\nThis may take a minute or so.
";
for (@NSlist) {
$gtld = $_;
&doTheDig;
}
}
sub doTheDig {
$digdata = `dig \@$gtld $host any`;
&outputData;
&extractNS;
}
sub checkforErrors {
if ($pass eq "") {
&doHTMLEnd;
exit;
} elsif ($pass ne "password") {
&invalidPasswordExit;
} elsif ($host eq "") {
print "Missing Host
";
exit;
} elsif ($host =~ m/[\|&\+=\@%]/gi) {
print "Invalid Host
";
exit;
} elsif ($#NSlist < 0) {
print "No gTLD Servers Selected
";
exit;
}
foreach (@NSlist) {
if ($_ =~ m/[\|&\+=\@%]/gi) {
print "Invalid gTLD Server
";
exit;
}
}
}
sub outputData {
my $header = "# dig \@$gtld $host any
\n";
if ($digdata =~ /(status: QUERY REFUSED)/) {
print "$header $1
";
} elsif ($digdata =~ /(status: SERVER FAILED)/) {
print "$header $1
";
} elsif ($digdata =~ /(status: CONNECTION REFUSED)/) {
print "$header $1
";
} elsif ($digdata =~ /(status: TIMED OUT)/) {
print "$header $1
";
} elsif ($digdata =~ /(status: NXDOMAIN)/) {
print "$header $1
";
} elsif ($digdata =~ /(status: REFUSED)/) {
print "$header $1
";
} elsif ($digdata =~ /(status: SERVFAIL)/) {
print "$header $1
";
} elsif ($digdata =~ /status: NOERROR/) {
print "$header";
$digdata =~ s/$host/$host<\/font>/g;
print $digdata;
print "
";
} else {
print "$header unknown error code, probably invalid name server or server time-out; try resubmitting query.
";
}
}
sub extractNS {
my @templist = $digdata =~ m/(NS\s+.+\.\n)/g;
@templist = map { s/NS\s+(.+)\.\n/$1/; $_; } @templist; # clean the array
for (@templist) {
my $ns = lc($_);
unless("@NSlist" =~ /$ns/) {
push(@NSlist, $ns);
}
}
}
sub invalidPasswordExit {
print "Invalid Password
";
exit;
}
sub doHTMLStart {
print header();
print <
über dig tool
HTMLSTART
}
sub doHTMLEnd {
print <
HTMLEND
}