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Whomst

Quick and dirty Sinatra app for SNMP polling an Apple Airport Express base station to see who's online. YMMV

Requirements

  • smnpwalk
  • nmap for MAC prefix database
  • dig for Zeroconf
  • ping to test for host online

Instructions

  1. Make a file called hosts with MAC address or host in the left hand field, then a space and a free-form comment
DE:AD:BE:EF:12:34 Raspberry Pi 1
10.10.42.2 Raspberry Pi 1
DE:AD:BE:EF:12:34 Power Mac G4
DE:AD:BE:EF:12:34	Thinkpad
  1. bundle install
  2. Run ruby app.rb IPADDRESS_OF_AIRPORT and navigate to http://localhost:4567/
host ip address mac address vendor comment zeroconf
raspberry pi 1 10.10.32.3 DE:AD:BE:EF:12:34 alfa wireless 
raspberrypi.local.
10.10.32.6 DE:AD:BE:EF:12:34 raspberry ethernet
melvin's macbook 10.10.32.8 DE:AD:BE:EF:12:34 apple 
melvin.local.
"model=macbookpro3,3" "osxvers=7"
Mac Mini 10.10.32.9 DE:AD:BE:EF:12:34 liteon 

    

    

        Pentium PC!
      10.10.32.10
      DE:AD:BE:EF:12:34
      intel
       wireless
        
windowsxp.local.

    

    

      10.10.32.103
      DE:AD:BE:EF:12:34
      wistron
       ethernet
    

    

        jon iphone
      10.10.32.100
      DE:AD:BE:EF:12:34
      apple
      
        

    

    

        tom iphone
      10.10.32.101
      DE:AD:BE:EF:12:34
      apple
      
        

    

    

        tom imac
      10.10.32.102
      DE:AD:BE:EF:12:34
      apple
      
        
tom-imac.local.

    




Why Ruby?


This should probably be run by cron instead of running in the server.
Those slow dig calls could be parallelized with a better language.


TODO


    

  •  Historical info (lastlog)
    • 

  •  Machines stick around for a long time (DHCP lifetime?)
    • 

  •  non-DHCP hosts?
    •