class MacsController < ApplicationController rescue_from CanCan::AccessDenied do |exception| today = Date.today event = Date.new(2013,9,1) if today == event redirect_to main_app.root_url, :alert => "CryptoParty today; no MAC scanning. Sorry, NSA!" else redirect_to main_app.root_url, :alert => "Nothing to see here!" end end load_and_authorize_resource :mac, :except => :create load_and_authorize_resource :user, :through => :mac, :except => [:index, :show, :scan, :import] before_filter :arp_lookup, :only => :new #require "active_record" require "optparse" #require "rubygems" def index recent_mac_logs_ungrouped = MacLog.last(1000) if recent_mac_logs_ungrouped.present? @mac_time_start_date = recent_mac_logs_ungrouped.first.created_at recent_mac_logs = recent_mac_logs_ungrouped.group_by(&:mac) @mac_times = {} # Go thru each mac recent_mac_logs.each do |mac_log| last_active = nil # And the entries for each mac (mac_log.first is the string, mac_log.last is the array) mac_log.last.each do |entry| # Find an activate followed immediately by a deactivate if entry.action == "activate" last_active = entry else if last_active && entry.action == "deactivate" # Calculate the time difference between the two and append to this mac's total time this_entry = @mac_times[entry.mac] if this_entry this_time = this_entry[:time] else this_time = 0 end @mac_times[entry.mac] = {:mac => entry, :time => (entry.created_at - last_active.created_at) + this_time} else # No pair found; discard. last_active = nil end end end end @mac_times_sorted = @mac_times.sort{|a,b| b.last[:time] <=> a.last[:time] } @most_active_mac = nil @runner_up_mac = nil @mac_times_sorted.each do |mac_time| unless @most_active_mac this_mac = Mac.find_by_mac(mac_time.first) unless this_mac.hidden @most_active_mac = this_mac @most_active = mac_time end else unless @runner_up_mac this_mac = Mac.find_by_mac(mac_time.first) unless this_mac.hidden @runner_up_mac = this_mac @runner_up = mac_time end end end end end #@active_macs = Mac.where(:active => true, :hidden => false) #@active_macs += Mac.where(:active => true, :hidden => nil) # De-dupe users for the public if can? :update, Mac then @active_macs = Mac.where("macs.active = ? AND (macs.hidden IS NULL OR macs.hidden = ?)", true, false).includes(:user).order("users.name ASC") elsif user_signed_in? then @active_macs = Mac.where("macs.active = ? AND (macs.hidden IS NULL OR macs.hidden = ?)", true, false).includes(:user).order("users.name ASC").group("users.name") else @active_macs = Mac.select("mac, note, user_id").where("macs.active = ? AND (macs.hidden IS NULL OR macs.hidden = ?)", true, false).joins(:user).order("users.name ASC").group("users.name, mac, note, user_id") end @hidden_macs = Mac.where("macs.active = ? AND macs.hidden = ?", true, true).order("note ASC") @all_macs = Mac.find(:all, :order => "LOWER(mac)") respond_to do |format| format.html format.json { @filtered_macs = Mac.select("macs.mac, users.name, macs.note").where("macs.active = ? AND (macs.hidden IS NULL OR macs.hidden = ?)", true, false).joins(:user) render :json => @filtered_macs } end end # GET /macs/1 # GET /macs/1.json def show @mac = Mac.find(params[:id]) respond_to do |format| format.html # show.html.erb format.json { render :json => @macs } end end # GET /macs/new # GET /macs/new.json def new @mac = Mac.new if can? :manage, Mac then @users = User.accessible_by(current_ability).sort_by(&:name) else @users = [current_user] end respond_to do |format| format.html # new.html.erb format.json { render :json => @mac } end end # GET /macs/1/edit def edit @mac = Mac.find(params[:id]) if can? :manage, Mac then @users = User.accessible_by(current_ability).sort_by(&:name) else @users = [current_user] end end # POST /macs def create @mac = Mac.new(params[:mac]) @existing_mac = Mac.find_by_mac(@mac.mac) if can? :manage, Mac then @users = User.accessible_by(current_ability).sort_by(&:name) else @users = [current_user] end if @existing_mac.present? if @existing_mac.user_id.nil? redirect_to edit_mac_path(@existing_mac), :notice => 'This MAC already exists, edit it here:' else @mac.errors.add(:user,"for this MAC is already set to #{@existing_mac.user.name} -- please contact them or an admin if this is incorrect.") render :action => "new" end else respond_to do |format| if @mac.save format.html { redirect_to macs_path, :notice => 'MAC was successfully created.' } format.json { render :json => @mac, :status => :created, :location => @mac } else format.html { render :action => "new" } format.json { render :json => @mac.errors, :status => :unprocessable_entity } end end end end # PUT /macs/1 # PUT /macs/1.json def update #Log who updated this @mac = Mac.find(params[:id]) @mac.assign_attributes(params[:mac]) #@mac.user_id = params[:mac][:user_id] authorize! :update, @mac if can? :manage, Mac then @users = User.accessible_by(current_ability).sort_by(&:name) else @users = [current_user] end respond_to do |format| if @mac.save format.html { redirect_to macs_path, :notice => 'MAC was successfully updated.' } format.json { head :no_content } else format.html { render :action => "edit" } format.json { render :json => @mac.errors, :status => :unprocessable_entity } end end end def arp_lookup @ip = request.env['REMOTE_ADDR'] @arp = %x(/usr/sbin/arp -a | grep #{@ip}) end def scan Rails.logger.info "starting scan..." # Command line arguments options = {}; OptionParser.new { |opts| opts.banner = "Usage: pamela-scanner.rb --interface=en0" options[:verbose] = true opts.on("v", "--verbose", "Run verbosely") { |verbose| options[:verbose] = verbose } options[:interface] = "eth0" opts.on("i", "--interface=interface", "Network Interface") { |interface| options[:interface] = interface } options[:max_age] = 20 opts.on("a", "--max-age=minutes", "Minutes to keep expired macs active") { |max_age| options[:max_age] = max_age.to_i } options[:db_host] = "configure_me" opts.on("r", "--db-host=host", "Database Host") { |host| options[:db_host] = host } options[:db_name] = "configure_me" opts.on("n", "--db-name=name", "Database Name") { |name| options[:db_name] = name } options[:db_user] = "configure_me" opts.on("u", "--db-user=user", "Database User") { |user| options[:db_user] = user } options[:db_password] = "configure_me" opts.on("p", "--db-password=password", "Database Password") { |password| options[:db_password] = password } }.parse! # Open the database #ActiveRecord::Base::establish_connection( # :adapter => "mysql2", # :host => options[:db_host], # :database => options[:db_name], # :username => options[:db_user], # :password => options[:db_password]) #class Mac < ActiveRecord::Base #end #class MacLog < ActiveRecord::Base #end # Scan the network for mac addresses macs = {}; command = sprintf("arp-scan -R --interface=%s --localnet", options[:interface]) if options[:verbose] Rails.logger.info "Running [#{command}]" end IO.popen(command) { |stdin| Rails.logger.info "Reading stdin: "+stdin.inspect stdin.each { |line| next if line !~ /^([\d\.]+)\s+([[:xdigit:]:]+)\s/; macs[($2).downcase] = ($1).downcase; } } # Scan the existing macs and update each record as necessary Mac.find(:all).each { |entry| mac = entry.mac.downcase ip = entry.ip if macs.has_key?(mac) if ! entry.active || ! entry.since Rails.logger.info "Activating #{mac} at #{ip}" if options[:verbose] entry.since = Time.now MacLog.new(:mac => mac, :ip => ip, :action => "activate").save end entry.active = 1 entry.ip = ip entry.refreshed = Time.now entry.save macs.delete(mac) next end # Entry is no longer current if entry.active ageMinutes = ((Time.now - entry.refreshed)/60).to_i next if ageMinutes < options[:max_age] Rails.logger.info "Deactivating #{mac}, #{ageMinutes} minutes old" if options[:verbose] entry.active = 0 entry.save MacLog.new(:mac => mac, :ip => ip, :action => "deactivate").save end } # Add entries for any macs not already in the db macs.each { |mac, ip| Rails.logger.info "Activating new entry #{mac} at #{ip}" if options[:verbose] Mac.new(:mac => mac, :ip => ip, :active => 1, :since => Time.now, :refreshed => Time.now).save Rails.logger.info MacLog.new(:mac => mac, :ip => ip, :action => "activate").save } @log = MacLog.all end #def scan def import require 'csv' csv_text = File.read('mac_log.csv') csv = CSV.parse(csv_text) @output = [] csv.each do |row| @output += [row[1], Mac.create({:mac => row[0], :note => row[1], :hidden => row[2]}) ] end end end