/
dnsenum.pl
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/
dnsenum.pl
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#!/usr/bin/perl
#
#
# dnsenum.pl VERSION 1.2.4
# This version: - changed version number to the correct one
#
# dnsenum.pl: multithread script to enumerate information on
# a domain and to discover non-contiguous ip blocks.
#
# 1) Get the host's addresse.
# 2) Get the nameservers (threaded).
# 3) get the MX record (threaded).
# 4) Perform axfr queries on nameservers (threaded).
# 5) Get extra names via google scraping.
# 6) Brute force subdomains from file (threaded).
# 7) Calculate C class domain network ranges and perform whois
# queries on them (threaded).
# 8) Perform reverse lookups on C class or/and whois
# network ranges (threaded).
# 9) Write to domain_ips.txt file non-contiguous ip-blocks results.
#
# run perldoc on this script for help.
#
# To install needed modules:
# sudo perl -MCPAN -e shell
# and then e.g.: cpan[1]> install XML::Writer
#
# Copyright (C) 2014 - Filip Waeytens, tixxDZ
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#
# Special thanks to all perl developers.
#
# please see perldoc dnsenum.pl for options and arguments
use strict;
use warnings;#it complains about uninitialized values when it doesn't find address in RR; need to fix later
use Config;
use Term::ANSIColor;
use Getopt::Long;
use IO::File;
use Net::IP;
use Net::DNS;
use Net::Netmask;
use XML::Writer;
use Socket;
use String::Random;
my ($ithreads_support, $whois_support, $mech_support, $html_support,$xml_support);
my (%nameservers, %allsubs, %googlesubs);
my (%filesubs, %netranges, %recursubs);
my (@mxservers, @results, @ipblocks, @privateips);
my ($enum, $exp, $help, $noreverse, $nocolor, $update, $whois, $dnsserver);
my ($private, $recursion, $scrap, $threads, $verbose);
my ($dnsfile, $subfile, $dns_tmp, $sub_tmp, $fileips);
my ($domain, $recur, $table, $extend_b, $extend_r);
my ($timeout, $delay, $pages, $ipcount, $ipvalid) = (10, 3, 5, 0, 0);
my ($output);
my $writer;
my $program = 'dnsenum.pl';
my $string_gen = String::Random->new;
my $wildcards = $string_gen->randpattern("cccccccccccc");
my @wildcardaddress;
my @wildcardcname;
my $VERSION = '1.2.4';
#load threads modules (perl must be compiled with ithreads support)
BEGIN {
if ($Config{useithreads}){
eval(" use threads;
use threads::shared;
use Thread::Queue;
");
$ithreads_support = 1 unless $@;
}
}
eval("use Net::Whois::IP qw(whoisip_query);");
$whois_support = 1 unless $@;
eval("use WWW::Mechanize;");
$mech_support = 1 unless $@;
eval("use HTML::Parser;");
$html_support = 1 unless $@;
eval("use XML::Writer;");
$xml_support = 1 unless $@;
print STDOUT $program, " VERSION:", $VERSION, "\n";
GetOptions ( 'dnsserver=s' => \$dnsserver,
'enum' => \$enum,
'd|delay=i' => \$delay,
'e|exclude=s' => \$exp,
'f|file=s' => \$dnsfile,
'h|help' => \$help,
'noreverse' => \$noreverse,
'nocolor' => \$nocolor,
'p|pages=i' => \$pages,
'private' => \$private,
'r|recursion' => \$recursion,
's|scrap=i' => \$scrap,
'subfile=s' => \$subfile,
'threads=i' => \$threads,
't|timeout=i' => \$timeout,
'u|update=s' => \$update,
'v|verbose' => \$verbose,
'w|whois' => \$whois,
'o|out=s' => \$output);
usage() if $help || @ARGV == 0;
$domain = lc $ARGV[0];
$fileips = $domain.'_ips.txt';
#DEFAULT options --threads 5 -s 15 -w
if ($enum) {
$threads = 5;
$scrap = 15;# Google scraping default to 15 to avoid Google Blocking us with captcha's
$whois = 1;
}
#module support
if ($threads) {
if ((!defined $ithreads_support and
warn "Warning: can't use threads, check ithreads support, and ".
"(threads, threads::shared, Thread::Queue) modules.\n") ||
$threads <= 0) {
$threads = undef;
}
else {
#to handle different ips that belongs to the domain
share(@results);
#number of ips that will be queried in reverse lookup
share($ipcount);
#number of valid ips (taken from reverse lookup responses)
share($ipvalid);
#will contain all valid subdomains
share(%allsubs);
if ($recursion) {
share(%recursubs);
share(%nameservers);
}
#to save whois netblocks
share($table);
#whois and reverse lookup results
share(%netranges);
}
}
if ($whois && !defined $whois_support) {
warn "Warning: can't load Net::Whois::IP module, ".
"whois queries disabled.\n";
$whois = undef;
}
if ($whois && !defined $whois_support) {
warn "Warning: can't load Net::Whois::IP module, ".
"whois queries disabled.\n";
$whois = undef;
}
if ($output && !defined $xml_support) {
warn "Warning: can't load XML::Writer module, ".
"xml output disabled.\n";
$output = undef;
}
if(defined($output)) {
my $out = new IO::File(">$output");
$writer = new XML::Writer(OUTPUT=>$out);
$writer->xmlDecl("UTF-8");
$writer->startTag("magictree", "class"=>"MtBranchObject");
$writer->startTag("testdata", "class"=>"MtBranchObject");
}
$scrap = undef
if $scrap && ((not defined $mech_support and
warn "Warning: can't load WWW::Mechanize module".
", Google scraping desabled.\n") ||
(not defined $html_support and
warn "Warning: can't load HTML::Parser module".
", Google scraping desabled.\n") ||
$scrap <= 0 || $pages <= 0);
$timeout = 10 if $timeout < 0 || $timeout > 128;
$delay = 3 if $delay < 0;
$update = undef if $update && !$dnsfile;
unless ($nocolor) {
print color 'bold blue';
}
print STDOUT "\n----- ", $domain ," -----\n";
unless ($nocolor) {
print color 'reset';
}
################START#####################
# (1) get the host's addresses
printheader ("Host's addresses:\n");
my $res = Net::DNS::Resolver->new( tcp_timeout => $timeout,
udp_timeout => $timeout,
defnames => 0);
$res->nameservers($dnsserver) if $dnsserver;
my $packet = $res->query($domain);
if ($packet) {
foreach my $rr (grep { $_->type eq 'A' } $packet->answer) {
printrr($rr->string);
xml_host($rr);
push @results, $rr->address
if $rr->name =~ /$domain$/;
}
}
elsif ($verbose) {
warn " ", $domain ," A query failed: ", $res->errorstring, "\n";
}
# wildcards test - I guess it can be cleaner, but it seems to be working
# tested with opendns servers and ubuntu.org domain
print STDOUT "\n"."-" x 16 ."\nWildcards test:\n"."-" x 16 ."\n"
if $verbose;
my $wildcardpacket=$res->query($wildcards.".".$domain);
# if we get a response resolving our random hostname, it can be a A or a CNAME
if ($wildcardpacket) {
printheader ("Wildcard detection using: ".$wildcards."\n");
foreach my $rr ($wildcardpacket->answer) {
if ($rr->type eq 'A')
{
printrr($rr->string);
#wildcardaddress will hold the IP that's used as a string
my @wcheck= split('\s+',$rr->string);
push @wildcardaddress, $wcheck[4];
}
if ($rr->type eq 'CNAME')
{
printrr($rr->string);
#wildcardcname will hold CNAME that's used as a string
my @wcheck= split('\s+',$rr->string);
push @wildcardcname, $wcheck[4];
}
}
unless ($nocolor) {
print color 'bold red';
}
print "\n\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n\n";
print STDOUT " Wildcards detected, all subdomains will point to the same IP address\n";
print STDOUT " Omitting results containing ".join(', ', @wildcardaddress).".\n Maybe you are using OpenDNS servers.\n";
print "\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n";
unless ($nocolor) {
print color 'reset';
}
#exit(1);#we don't exit when wildcards are detected, because we will miss existing hosts
}
elsif ($verbose) {
print STDOUT " good\n";
}
# (2) get the namservers for the domain
printheader ("Name Servers:\n");
$packet = $res->query($domain, 'NS');
if ($packet) {
foreach my $rr (grep { $_->type eq 'NS' } $packet->answer) {
$nameservers{$rr->nsdname} = 1;
}
die " Error: can't continue no NS record for " , $domain ,"\n"
unless %nameservers;
#read the A record from the additional section
if ($packet->header->arcount) {
my @remain = additionalrecord($packet, keys %nameservers);
#do nslookup on nameservers that are not present in the
#additional section
launchqueries(\&nslookup, @remain)
if scalar @remain;
}
#perform the nslookup on the nameservers
else {
launchqueries(\&nslookup, keys %nameservers);
}
}
#exit if there is no NS record.
else {
die " ", $domain ," NS record query failed: ",
$res->errorstring , "\n";
}
# (3) get the MX record
printheader ("Mail (MX) Servers:\n");
$packet = $res->query($domain, 'MX');
if ($packet) {
foreach my $rr (grep { $_->type eq 'MX' } $packet->answer) {
push @mxservers, $rr->exchange;
}
if (scalar @mxservers) {
if ($packet->header->arcount) {
my @remain = additionalrecord($packet, @mxservers);
launchqueries(\&nslookup, @remain)
if scalar @remain;
}
else {
launchqueries(\&nslookup, @mxservers);
}
}
}
elsif ($verbose) {
warn " ", $domain ," MX record query failed: ",
$res->errorstring, "\n";
}
# (4) perform zonetransfers on nameservers
printheader ("Trying Zone Transfers and getting Bind Versions:\n");
launchqueries(\&zonetransfer, keys %nameservers);
# (5) scrap additional names from google search and do nslookup on them
if ($scrap) {
printheader ("Scraping ".$domain." subdomains from Google:\n");
my @tmp = googlescraping();
if (scalar @tmp) {
#print STDOUT "\n Performing nslookups:\n";
launchqueries(\&nslookup, map { $_ .= '.'.$domain } @tmp);
}
}
#exit if the brute force file is not specified
unless ($dnsfile) {
print STDOUT "\nbrute force file not specified, bay.\n";
if(defined($output)) {
$writer->endTag('testdata');
$writer->endTag('magictree');
}
exit(0);
}
$extend_b = 1 if ($update && $update eq 'a') || $subfile || $recursion;
# (6) brute force subdomains from a file
printheader ("Brute forcing with ".$dnsfile.":\n");
bruteforce('f');
#updating dnsfile with zonetransfer or googlescraping subdomains results
if ($update) {
if ($dns_tmp = IO::File->new_tmpfile()) {
if ($update eq 'z') {
print $dns_tmp $_, "\n"
for uniq_hosts(grep {
$allsubs{$_} eq $update
} keys %allsubs);
}
elsif ($update eq 'g') {
print $dns_tmp $_, "\n"
for uniq_hosts(keys %googlesubs);
}
}
else {
die "Error can't create a temporary file: $!, ".
"to update ", $dnsfile ," file\n";
}
}
undef %googlesubs if %googlesubs;
#launch recursion
if ($recursion) {
if (%allsubs) {
printheader("Performing recursion:\n");
print STDOUT "\n ---- Checking subdomains NS records ----\n";
#select subdomains that are able to recursion
launchqueries(\&selectsubdomains,
map { $_ .= '.'.$domain } sort keys %allsubs);
if (%recursubs) {
my @tmp = keys %recursubs;
undef %recursubs;
#brute force from a list using recursion
bruteforce('l', \@tmp);
}
else {
print STDERR "\n Can't perform recursion ".
"no NS records.\n";
}
}
else {
print STDERR "\n Can't perform recursion no subdomains.\n";
}
undef %filesubs;
}
#updating the brute force file (-u a switch)
if ($update && ($update eq 'a' || $update eq 'all')) {
#save ns and mx servers
my @tmp = keys %nameservers;
push @tmp, @mxservers if scalar @mxservers;
print $dns_tmp $_, "\n"
for uniq_hosts(grep { s/\.$domain// } @tmp);
print $dns_tmp $_, "\n" for uniq_hosts(keys %allsubs);
}
#write subdomains to the subfile
if ($subfile) {
if ($sub_tmp = IO::File->new_tmpfile()) {
my %uniq;
@uniq{keys %nameservers} = ();
@uniq{@mxservers} = () if scalar @mxservers;
print $sub_tmp $_, "\n"
for grep { s/\.$domain// } keys %uniq;
print $sub_tmp $_, "\n" for keys %allsubs;
}
else {
die "Error can't create a temporary file: $!, ".
" to save results to ", $subfile ," file\n";
}
}
undef @mxservers;
undef %allsubs;
# (7) get domain network ranges from brute force results and whois queries
@results = networkranges(@results);
undef %netranges;
# (8) perform reverse lookups on netranges (class C or whois netranges)
unless ($noreverse) {
#to save all valid subdomains discovred in
#the reverse lookup process
$extend_r = 1
if ($update && ($update eq 'r' || $update eq 'a' ||
$update eq 'all')) || $subfile;
printheader("Performing reverse lookup on ".$ipcount." ip addresses:\n");
launchqueries(\&reverselookup, @results);
print STDOUT "\n", $ipvalid ," results out of ",
$ipcount ," IP addresses.\n";
}
else {
#calculate ip blocks
@ipblocks = finalvalidips(sort_by_ip_address(@results));
}
#save final IP blocks to the domain_ips.txt file
writetofile($fileips, "w", @ipblocks);
#show private ips
if ($private && scalar @privateips) {
print STDOUT "\n"."-" x 26 ."\n",
$domain ," private ips:\n".
"-" x 26 ."\n";
print STDOUT " ", $_ , "\n" for @privateips;
#save private ips to domain_ips.txt file
writetofile($fileips, "a+", @privateips);
}
# (9) show non-contiguous IP blocks
printheader($domain." ip blocks:\n");
print STDOUT " ", $_ , "\n" for @ipblocks;
#clean the brute force file
cleanfile($dnsfile, $dns_tmp) if $update;
#clean the subfile
cleanfile($subfile, $sub_tmp) if $subfile;
if(defined($output)) {
$writer->endTag('testdata');
$writer->endTag('magictree');
}
print STDOUT "\ndone.\n";
exit(0);
#--------------------------------------------------
#subroutine that will launch different queries
#(nslookup, zonetransfer, whoisip, reverselookup)
sub launchqueries {
my $querytype = shift;
if ($querytype != \&reverselookup) {
if ($threads) {
my $stream = new Thread::Queue;
$stream->enqueue(@_);
my $thrs = $threads; #don't create unused threads
$thrs = scalar @_ if $threads > scalar @_;
for (1 .. $thrs) {
threads->new($querytype, \$stream);
}
#wait all threads
foreach (threads->list) {
$_->join
if ($_->tid &&
!threads::equal($_, threads->self));
}
}
else {
foreach (@_) {
&$querytype($_);
}
}
}
else {
foreach (@_) {
my $block = new2 Net::Netmask($_);
unless ($block) {
print STDERR " Can't perform reverse lookup: "
, $Net::Netmask::error ,"\n";
next;
}
if ($threads) {
my $stream = new Thread::Queue;
$stream->enqueue($block->enumerate);
for (1 .. $threads) {
threads->new($querytype, \$stream);
}
#wait all threads
foreach (threads->list) {
$_->join
if ($_->tid &&
!threads::equal($_, threads->self));
}
}
else {
&$querytype($block->enumerate);
}
#calculate IP blocks results
if (%netranges) {
my @tmp = finalvalidips(
sort_by_ip_address(keys %netranges));
undef %netranges;
#get final valid ip blocks
push @ipblocks, @tmp;
}
#write reverse lookup hostnames results to files
if ($extend_r && %allsubs) {
if ($update && ($update eq 'r' ||
$update eq 'a' || $update eq 'all')) {
print $dns_tmp $_, "\n"
for uniq_hosts(keys %allsubs);
}
if ($subfile) {
print $sub_tmp $_, "\n"
for keys %allsubs;
}
undef %allsubs;
}
}
}
}
#subroutine to perform reverse lookups
sub reverselookup {
my $stream = shift if $threads;
my $res = Net::DNS::Resolver->new(
tcp_timeout => $timeout,
udp_timeout => $timeout,
persistent_udp => 1);
$res->nameservers(keys %nameservers);
while (defined(my $ip = $threads ? $$stream->dequeue_nb : shift)) {
my $query = $res->query($ip);
if ($query) {
foreach my $rr ( grep { $_->type eq 'PTR' }
$query->answer) {
#exclude non PTR types answers or unwanted hostnames
next if $exp && $rr->ptrdname =~ /$exp/;
if ($rr->ptrdname =~ /(.*)(\.$domain$)/i) {
$allsubs{$1} = 1
if $extend_r && !$allsubs{$1};
#to calculate last valid ip blocks
unless ($netranges{$ip}) {
$netranges{$ip} = 1;
$ipvalid++;
}
printrr($rr->string);
xml_host($rr);
}
#show all answers even if the hostname don't match the domain
elsif ($verbose) {
printrr($rr->string);
xml_host($rr);
}
}
}
#this part is just to check progress
elsif ($verbose) {
print STDOUT " ", $ip ," ...\n";
}
}
}
sub xml_host {
if(defined $output) {
my $rr = shift;
my $ip;
if($rr->type eq 'A') {
$ip = $rr->address;
} else {
my $packed_ip = gethostbyname($rr->name);
if (defined $packed_ip) {
$ip = inet_ntoa($packed_ip);
}
}
if(defined($ip)) {
$writer->startTag("host");
$writer->characters($ip);
$writer->startTag("hostname");
$writer->characters($rr->name);
$writer->endTag("hostname");
$writer->endTag("host");
}
$writer->startTag("fqdn");
$writer->characters($rr->name . '.');
$writer->endTag("fqdn");
}
}
#subroutine for nslookups (A record)
sub nslookup {
my $stream = shift if $threads;
my $res = Net::DNS::Resolver->new( tcp_timeout => $timeout,
udp_timeout => $timeout,
persistent_udp => 1,
dnsrch => 0);
$res->nameservers($dnsserver) if $dnsserver;
while (defined(my $host = $threads ? $$stream->dequeue_nb : shift)) {
my $query = $res->search($host);
if ($query) {
foreach my $rr ($query->answer) {
##we only print / add the result if it doesn't match the wildcardaddress
if (!($rr->can('address') && $rr->address ~~ @wildcardaddress) && !($rr->name ~~ @wildcardcname))
{
printrr($rr->string);
xml_host($rr);
#check if it match the domain
if ($rr->name =~ /(.*)(\.$domain$)/i) {
#save valid subdomains
if ($extend_b) {
$allsubs{$1} = 1
unless $allsubs{$1};
#recursion results
$recursubs{$1} = 1
if $recur &&
!$recursubs{$1};
}
#save ip address
push @results, $rr->address
if $rr->type eq 'A';
}
}
}
}
elsif ($verbose) {
warn " ", $host ," A record query failed: ",
$res->errorstring, "\n";
}
}
}
#subroutine to select subdomains that have NS records
sub selectsubdomains {
my $stream = shift if $threads;
my $res = Net::DNS::Resolver->new( tcp_timeout => $timeout,
udp_timeout => $timeout,
persistent_udp => 1);
$res->nameservers($dnsserver) if $dnsserver;
while (defined(my $host = $threads ? $$stream->dequeue_nb : shift)) {
my $packet = $res->query($host, 'NS');
if ($packet) {
foreach my $rr (grep { $_->type eq 'NS' }
$packet->answer) {
#show all results
#print STDOUT " ", $rr->string ,"\n";
printrr($rr->string);
xml_host($rr);
if ($rr->name =~ /(.*)(\.$domain$)/i) {
if (!$allsubs{$1} ||
$allsubs{$1} ne 'r') {
#bookmark this hostname to
#perform recursion on it and
#to avoid repetition, because
#some domains will use CNAME
#types that point to subs
#that we have already
#processed in a previous
#recursion levels
$allsubs{$1} = 'r';
#select this subdomain
#for recursion
$recursubs{$rr->name} = 1;
}
#perhaps for future additions we save
#ns servers for each domain or
#subdomain, this will be very
#useful in reverse lookup
# --- begin ---
#check if we already have this
#NS server
#next if $nameservers{$rr->nsdname};
#$nameservers{$rr->nsdname} = 1;
#push @tmp, $rr->nsdname;
# --- end ---
}
}
#perhaps for future additions to perform an extrem
#recursion to get the IP addresse of the NS servers
# --- begin ---
#next unless scalar @tmp;
#get the NS servers A record
#if ($packet->header->arcount) {
# @tmp = additionalrecord($packet,@tmp);
# next unless scalar @tmp;
#}
#foreach my $nshost (@tmp) {
# $packet = $res->query($nshost);
# if ($packet) {
# foreach my $rr \
# (grep { $_->type eq 'A' }
# $packet->answer) {
# print STDOUT " ",
# $rr->string , "\n";
# push @results, $rr->address
# if ($rr->name =~ /$domain$/);
# }
# }
# elsif ($verbose) {
# warn " ", $nshost ,
# " A record query failed: ",
# $res->errorstring , "\n";
# }
#}
# --- end ---
}
elsif ($verbose) {
warn " ", $host ," NS record query failed: ",
$res->errorstring , "\n";
}
}
}
#subroutine for zonetransfers
#I got rid of the Bind Versions search...doesn't really add anything and clutters output
sub zonetransfer {
my $stream = shift if $threads;
my $res = Net::DNS::Resolver->new( tcp_timeout => $timeout,
udp_timeout => $timeout);
while (defined(my $ns = $threads ? $$stream->dequeue_nb : shift)) {
$res->nameservers($ns);
my @zone = $res->axfr($domain);
#my $version_query = $res->search("version.bind","TXT","CH");
print STDOUT "\nTrying Zone Transfer for ", $domain ,
" on ", $ns ," ... \n";
if (@zone) {
foreach my $rr (@zone) {
#print all results
printrr($rr->string);
xml_host($rr);
#save data if the record's domain name
#match the domain
if ($rr->name =~ /(.*)(\.$domain$)/i) {
#save hostname
$allsubs{$1} = 'z'
unless $allsubs{$1};
#save the IP address
push @results, $rr->address
if $rr->type eq 'A';
#save new mx servers hostnames
push @mxservers, $rr->exchange
if $rr->type eq 'MX';
#perhaps for future additions
#save NS servers for reverse lookups
# --- begin ---
#$nameservers{$rr->nsdname} = 1
# if ($rr->type eq 'NS' &&
# !$nameservers{$rr->nsdname});
# --- end ---
}
}
}
else {
warn "AXFR record query failed: ",
$res->errorstring, "\n";
}
}
}
#subroutine for scraping domains from google
sub googlescraping {
my ($response, $browser, $form, $parser, $nextpage);
my ($count, $mypage) = (0,1);
my $query = qq[allinurl: -www site:$domain];
my $nexturl = qq[/search?.*q=.*$domain.*start];
#on errors the mech object will call die
$browser = WWW::Mechanize->new( autocheck => 1,
stack_depth => 1,
cookie_jar => undef);
#uncomment for debugging with BURP
#$browser->proxy(['http'], 'http://127.0.0.1:8080');
#setup the browser config
my @agents = $browser->known_agent_aliases();
my $agent = $agents[rand(scalar @agents)];
$browser->agent_alias($agent);
$browser->timeout($timeout);
#get the first page
$response = $browser->get("http://www.google.com/ncr");
$form = $browser->form_number(1)
or return;
$form->find_input('q')->value($query);
$response = $browser->submit_form( form_number => 1,
form_name => 'f');
do {
$nextpage = undef;
print STDOUT "\n ---- Google search page: ",
$mypage ," ---- \n\n";
$parser = HTML::Parser->new(
api_version => 3,
start_h => [sub {
my $attr = shift;
#end of parsing
#(we have enough subdomains)
$parser->eof
unless $count < $scrap;
return unless $attr->{href};
#subdomains checks - if shit goes wrong with googlescraping it's prolly the regex
if ($attr->{href} =~
/(\/url\?q\=http:\/\/)([\w\.-]+)(\.$domain\/)/) {
$allsubs{$2} = 'g'
unless $allsubs{$2};
$googlesubs{$2} = 1
unless $googlesubs{$2};
print STDOUT " ", $2 ,"\n";
$count++;
}
#the next page
elsif ($attr->{href} =~
/^$nexturl=$mypage\d.*/ &&
!defined $nextpage) {
$nextpage = $attr->{href};
}
},'attr']
);
$parser->parse($response->decoded_content);
if ($nextpage) {
$response = $browser->get($nextpage);
$mypage++;
}
} while ($count < $scrap && $mypage <= $pages && $nextpage);
#print STDOUT "\n Google results: ", $count ,"\n";
printheader("Google Results:\n");
if ($count) {
return grep { $allsubs{$_} eq 'g' } keys %allsubs;
}
else {
print STDERR " perhaps Google is blocking our queries.\n Check manually.\n";
return;
}
}
#subroutine to query a whois server for an IP address to get the correct netrange
sub whoisip {
my $stream = shift if $threads;
while (defined(my $ip = $threads ? $$stream->dequeue_nb : shift)) {
my ($inetnum, $block);
#search in the network blocks table to find
#if any of them contains the IP address
next if (findAllNetblock($ip, $table));
#this is very useful on whois servers
#that limit the number of connections
sleep rand $delay;
#catch different exceptions
#(on exceptions netrange will be a class C /24)
eval {
my $response = whoisip_query($ip);
foreach (keys %{$response}) {
next if ($_ !~ /^(inetnum|netrange)$/i);
$inetnum = $response->{$_};