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Perl script that gathers all data from network.
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#!/usr/bin/env perl | |
#+ | |
# Name: | |
# counter.pl | |
# Language: | |
# Perl | |
# Purpose: | |
# Count the number of devices on a network | |
# Description | |
# Script uses an ARP scan to count the number of devices on the network | |
# and saves this information to an SQLite3 database. Database will be created | |
# the first time the script is run, tables will be created on the fly when | |
# needed if they don't already exist. | |
# External Modules: | |
# Getopt::Long | |
# DBI | |
# DataTime | |
# Authors: | |
# ANA: Alasdair Allan (Babilim Light Industries, Ltd.) | |
# TN: Thomas Norberg | |
# History | |
# 11-NOV-2018 (TN): | |
# Added optional lookup of macvendor. | |
# Added mdns to macs table. | |
# Added interface option. | |
# 03-FEB-2017 (ANA): | |
# Added optional lookup of mDNS forward address of scanned hosts. | |
# 02-FEB-2017 (ANA): | |
# Original version of the script. | |
# Copyright: | |
# Copyright (C) 2017. Babilim Light Industries, Ltd. Released under the MIT License. | |
# Permission is hereby granted, free of charge, to any person obtaining a copy of this | |
# software and associated documentation files (the "Software"), to deal in the Software | |
# without restriction, including without limitation the rights to use, copy, modify, merge, | |
# publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons | |
# to whom the Software is furnished to do so, subject to the following conditions: | |
# | |
# The above copyright notice and this permission notice shall be included in all copies or | |
# substantial portions of the Software. | |
# | |
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING | |
# BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
#- | |
# L O A D M O D U L E S -------------------------------------------------- | |
use strict; | |
use warnings; | |
use DBI; | |
use Getopt::Long; | |
use DateTime; | |
use LWP::Simple; | |
# O P T I O N S H A N D L I N G -------------------------------------------- | |
my ( %opt ); | |
my $status = GetOptions( | |
"network=s" => \$opt{"network"}, | |
"interface=s" => \$opt{"interface"}, | |
"dig" => \$opt{"dig"}, | |
"maclookup" => \$opt{"maclookup"} | |
); | |
$opt{"network"} = "network" unless defined $opt{"network"}; | |
$opt{"interface"} = "wlan0" unless defined $opt{"interface"}; | |
# R U N S C A N ----------------------------------------------------------- | |
print "\nSCANNING\n--------\n"; | |
my ($stmt, $sth, $rv); | |
my $dbfile = "/home/pi/$opt{'network'}.db"; | |
my $dbh = DBI->connect("dbi:SQLite:dbname=$dbfile","",""); | |
my $scan = `arp-scan --retry=8 --ignoredups -I $opt{"interface"} --localnet`; | |
my @lines = split("\n", $scan); | |
# create the macs table | |
$stmt = qq(CREATE TABLE IF NOT EXISTS macs(mac TEXT NOT NULL PRIMARY KEY UNIQUE, count INTEGER, description TEXT, ip_address TEXT, mac_vendor TEXT, mdns_local TEXT, online INTEGER);); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
$sth->finish(); | |
#Update the online values to 0 | |
$stmt = qq(UPDATE macs SET online=0;); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
$sth->finish(); | |
my $csv = undef; | |
my $count = 0; | |
foreach my $line (@lines) { | |
chomp($line); | |
if ($line =~ /^\s*((?:\d{1,3}\.){3}\d{1,3})\s+((?:[a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2})\s+(\S.*)/) { | |
my $ip = $1; | |
my $mac = $2; | |
my $desc = $3; | |
print "IP=$ip, MAC=$mac, DESC=$desc"; | |
# Dig for the mDNS name associated with the IP | |
my $mdns = undef; | |
if (defined($opt{"dig"})) { | |
$stmt = qq(CREATE TABLE IF NOT EXISTS mdns(mac TEXT NOT NULL PRIMARY KEY UNIQUE, mdns TEXT);); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
$sth->finish(); | |
my $dig = `dig -x ${ip} \@224.0.0.251 -p 5353`; | |
#print $dig; | |
my @report = split("\n", $dig); | |
my $answer = 0; | |
my $local = undef; | |
foreach my $entry (@report) { | |
chomp($entry); | |
if ( $answer == 1 ) { | |
$local = $entry; | |
last; | |
} | |
if( $entry eq ";; ANSWER SECTION:") { | |
$answer = 1; | |
} | |
} | |
if ( defined $local ) { | |
#print "local name = $local\n"; | |
( $mdns ) = ($local =~ /\s+(\S+\.local)\.$/); | |
print ", LOCAL=$mdns\n"; | |
$stmt = qq(INSERT OR REPLACE INTO mdns (mac, mdns) VALUES ("$mac","$mdns")); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
$sth->finish(); | |
} else { | |
print "\n"; | |
} | |
} else { | |
print "\n"; | |
} | |
$stmt = qq(SELECT count FROM macs WHERE mac="$mac";); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
my @row = $sth->fetchrow_array(); | |
$sth->finish(); | |
my $previous; | |
if (defined( $row[0] )) { | |
$previous = $row[0] | |
} else { | |
$previous = 0; | |
} | |
print "Previously seen '$previous' times\n"; | |
my $contents = ""; | |
if (defined($opt{"maclookup"})) { | |
$contents = get("https://macvendors.co/api/vendorname/$mac"); | |
} | |
if (!defined( $mdns )) { | |
$stmt = qq(SELECT mdns_local FROM macs WHERE mac="$mac";); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
my @row = $sth->fetchrow_array(); | |
$sth->finish(); | |
if(defined( $row[0] )){ | |
$mdns = $row[0]; | |
} else { | |
$mdns = ""; | |
} | |
} | |
$stmt = qq(INSERT OR REPLACE INTO macs (mac, count, description, ip_address, mac_vendor, mdns_local, online) VALUES ("$mac",$previous+1,"$desc","$ip","$contents","$mdns", 1)); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
$sth->finish(); | |
if (!defined $csv) { | |
$csv = "$mac"; | |
} else { | |
$csv = $csv . ",$mac"; | |
} | |
$count++; | |
} | |
} | |
my $time = DateTime->now->iso8601; | |
print "\nRESULT\n------\n"; | |
print "time = $time\n"; | |
print "count = $count\n"; | |
print "csv = $csv\n"; | |
$stmt = qq(CREATE TABLE IF NOT EXISTS scan(id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, datetime TEXT UNIQUE, count INTEGER, macs TEXT);); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
$sth->finish(); | |
$stmt = qq(INSERT INTO scan (datetime, count, macs) VALUES ("$time",$count,"$csv")); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
$sth->finish(); | |
# L A S T O R D E R S ----------------------------------------------------- | |
$stmt = qq(CREATE TABLE IF NOT EXISTS days(date TEXT UNIQUE NOT NULL PRIMARY KEY, average INTEGER, samples TEXT);); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
$sth->finish(); | |
print "\nAVERAGE\n-------\n"; | |
my $day = DateTime->now->ymd('-'); | |
print "Today is $day\n"; | |
$stmt = qq(SELECT samples FROM days WHERE date="$day";); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
my @row = $sth->fetchrow_array(); | |
$sth->finish(); | |
my $samples; | |
if (defined( $row[0] )) { | |
$samples = $row[0]; | |
} else { | |
$samples = undef; | |
} | |
my @values; | |
if (!defined $samples) { | |
$values[0] = $count; | |
$samples = "$count"; | |
} else { | |
@values = split(',', $samples); | |
push (@values, $count); | |
$samples = $samples . ",$count"; | |
} | |
print "Samples = $samples\n"; | |
#print "values = @values\n"; | |
my $average = 0; | |
foreach my $value (@values) { | |
$average = $average + $value; | |
} | |
$average = int($average/scalar(@values)); | |
$stmt = qq(INSERT OR REPLACE INTO days (date, average, samples) VALUES ("$day",$average,"$samples")); | |
$sth = $dbh->prepare( $stmt ); | |
$rv = $sth->execute(); | |
$sth->finish(); | |
print "Current running average for today is $average devices on the network.\n"; | |
$dbh->disconnect(); | |
exit; | |
# --------------------------------------------------------------------------- | |
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