ups, forgot to add dns-scripts, fixed.
This commit is contained in:
parent
0ae174e5bc
commit
3d48acb497
4 changed files with 577 additions and 0 deletions
165
dns-scripts/netdns.pl
Executable file
165
dns-scripts/netdns.pl
Executable file
|
|
@ -0,0 +1,165 @@
|
|||
#!/opt/local/bin/perl
|
||||
#
|
||||
# Script to do bulk PTR lookups on a network of IP's
|
||||
#
|
||||
# Updated 4/10 with more features and to make better use of underlying
|
||||
# CPAN modules:
|
||||
#
|
||||
# - Accepts IPv4/IPv6 addresses as singletons or a network in range or
|
||||
# CIDR format
|
||||
# - Allows you to configure which DNS server(s) to query
|
||||
# - Allows you to configure a fixed delay between PTR lookups
|
||||
# - Output to STDOUT for use in pipelines, or to a file in CSV or JSON
|
||||
# format
|
||||
# - Configurable timeout on PTR lookups
|
||||
# - Persistent UDP connections to help lessen the load on DNS servers
|
||||
#
|
||||
# Requires CPAN modules Net::DNS, Net::IP, JSON and Tie::IxHash
|
||||
#
|
||||
# perl -MCPAN -e 'CPAN::Shell->install(qw(Net::DNS Net:IP Tie::IxHash JSON))'
|
||||
#
|
||||
# should do the trick on any Unix OS. On Debian/Ubuntu, do:
|
||||
#
|
||||
# apt-get install libnet-dns-perl libnet-ip-perl libjson-perl libtie-ixhash-perl
|
||||
#
|
||||
# Usage: The only required parameter is an IPv4/IPv6 network specified
|
||||
# as a range or in CIDR format, or a single IP (see the Net::IP docs
|
||||
# at http://search.cpan.org/~manu/Net-IP-1.25/IP.pm). Output is a
|
||||
# simple CSV list of the IP addresses and the hostname they each
|
||||
# resolved to, or NXDOMAIN if no PTR record exists, or error text if
|
||||
# there is some other error with the DNS query.
|
||||
#
|
||||
# Output is always to STDOUT by default, or to a file if '-w' is
|
||||
# specified. Errors always go to STDERR via croak. Examples:
|
||||
#
|
||||
# ./netdns.pl -i 10.0.0/24 > ptr-list.csv
|
||||
# ./netdns.pl -i 10.0.0.1
|
||||
# ./netdns.pl -i 10.0.0.5-10.0.0.33 -d 10 -j
|
||||
# ./netdns.pl -i 10.0.0/25 -d 3 -t 2 -n 8.8.8.8,8.8.4.4 -j > ptr-list.json
|
||||
# ./netdns.pl -i 10.0.0/25 -j -w ptr-list.json
|
||||
# ./netdns.pl -i dead:beef::/32
|
||||
#
|
||||
# Sample JSON output:
|
||||
#
|
||||
# {
|
||||
# "10.0.0.0" : "foo1.example.com",
|
||||
# "10.0.0.1" : "foo2.example.com",
|
||||
# "10.0.0.2" : "foo3.example.com",
|
||||
# "10.0.0.3" : "foo4.example.com"
|
||||
# }
|
||||
#
|
||||
# Copyright (c) 2006-2010 Doug Maxwell <doug@unixlore.net>
|
||||
#
|
||||
# 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.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program; if not, write to the Free Software
|
||||
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
||||
# USA
|
||||
#
|
||||
|
||||
use strict;
|
||||
use warnings;
|
||||
use Net::DNS;
|
||||
use Net::IP;
|
||||
use Getopt::Std;
|
||||
use JSON;
|
||||
use Tie::IxHash;
|
||||
use English;
|
||||
use Carp;
|
||||
require 5.006_000; # Needed for $outfile
|
||||
|
||||
our ($opt_h,$opt_j,$opt_i,$opt_d,$opt_n,$opt_t,$opt_w);
|
||||
getopts('hji:d:n:t:w:');
|
||||
|
||||
usage() && exit if ( !$opt_i || $opt_h );
|
||||
|
||||
sub usage {
|
||||
print STDERR "\n$0 synopsis: \n";
|
||||
print STDERR "\n";
|
||||
print STDERR "Usage: $0 -i <IP or network spec> [-d N] [-t N] [-n <Comma-separated list of IPs or hostnames>] [-w filename] [-j] [-h]\n";
|
||||
print STDERR "-i: IP address, range or CIDR (required)\n";
|
||||
print STDERR "\t10.0.0.1\n\t10.0.0.3-10.0.0.55\n\t10.0.0/24\n\tdead:beef::/32\n";
|
||||
print STDERR "-d: Delay in seconds between lookups\n";
|
||||
print STDERR "-t: UDP timeout (defaults to five seconds)\n";
|
||||
print STDERR "-n: Comma-separated list of nameserver IPs or hostnames (defaults to system resolver)\n";
|
||||
print STDERR "-w: Output to the named file\n";
|
||||
print STDERR "-j: Output in JSON (default is CSV)\n";
|
||||
print STDERR "-h: This help text\n\n";
|
||||
}
|
||||
|
||||
# Make sure delays are non-negative
|
||||
my $delay = ( $opt_d && $opt_d > 0 ) ? $opt_d : 0;
|
||||
my $udp_timeout = ( $opt_t && $opt_t > 0 ) ? $opt_t : 5;
|
||||
|
||||
# Initialize the hashref used for JSON output. Tie it so we can print
|
||||
# it out in insertion order.
|
||||
my $ptr_records = {};
|
||||
tie %$ptr_records,"Tie::IxHash";
|
||||
|
||||
# $outfile is a filehandle pointing to the output file specified by
|
||||
# the 'w' option, or to STDOUT.
|
||||
my $outfile;
|
||||
if ( $opt_w ) {
|
||||
|
||||
open $outfile, '>', $opt_w or croak "Unable to open '$opt_w': $OS_ERROR\n";
|
||||
|
||||
} else {
|
||||
|
||||
open $outfile, '>-', or croak "Unable to open STDOUT: $OS_ERROR\n";
|
||||
}
|
||||
|
||||
my $ip = new Net::IP($opt_i) or croak "Unable to create Net::IP object\n";
|
||||
|
||||
my $res = Net::DNS::Resolver->new(
|
||||
persistent_udp => 1,
|
||||
udp_timeout => $udp_timeout,
|
||||
) or croak "Unable to create Net::DNS::Resolver object\n";
|
||||
|
||||
# Set the nameservers to query as specified by '-n' args
|
||||
$res->nameservers(split(",",$opt_n)) if ( $opt_n );
|
||||
|
||||
do {
|
||||
|
||||
my $ip_address = $ip->ip();
|
||||
|
||||
if ($ip_address) {
|
||||
|
||||
my $query = $res->send("$ip_address",'PTR');
|
||||
if (defined $query && $query->answer) {
|
||||
|
||||
foreach my $rr ($query->answer) {
|
||||
|
||||
unless ( $opt_j ) {
|
||||
print {$outfile} "$ip_address,",$rr->ptrdname, "\n" or croak "Couldn't write: $OS_ERROR\n";
|
||||
}
|
||||
$ptr_records->{$ip_address} = $rr->ptrdname;
|
||||
|
||||
}
|
||||
|
||||
} else {
|
||||
|
||||
unless ( $opt_j ) {
|
||||
print {$outfile} "$ip_address,",$res->errorstring,"\n" or croak "Couldn't write: $OS_ERROR\n";
|
||||
}
|
||||
$ptr_records->{$ip_address} = $res->errorstring;
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
sleep($delay) if ( $delay );
|
||||
|
||||
} while ( ++$ip );
|
||||
|
||||
# Pretty-print the results JSON if needed
|
||||
print {$outfile} JSON->new->pretty(1)->encode($ptr_records) if ( $opt_j );
|
||||
close $outfile or croak "Unable to close file: $OS_ERROR\n";
|
||||
Loading…
Add table
Add a link
Reference in a new issue