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• ladyada’s ranting » Blog Archive » The chemistry of home-etched PCBs
  
  
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• The Media Computing Group : LumiNet: An organic illumination network
  
  
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I’m learning Ruby, and as an early project, I thought I’d write a little SOAP server for exposing Solaris “kstat” output to the network.

It’s embryonic, but it works. I’d like to do a little more input sanitation, since it’s certainly possible to really hurt your server by requesting a kstat value of “::” (which returns all stats).

Here’s the server code:

require 'soap/rpc/standaloneServer'

class StatServ < SOAP::RPC::StandaloneServer
        def initialize(*args)
          super
          add_method(self, 'kstat', 'stat')
        end
        def kstat(stat)
                stat.gsub!(/[^a-zA-z0-9_:+]/i,'%');
                f = IO.popen("kstat -p #{stat}")
                return f.readlines
        end
end

server = StatServ.new('StatServ,'urn:StatServ','0.0.0.0',8888)
trap('INT') { server.shutdown ; puts "Server shutdown."}
trap('TERM') { server.shutdown ; puts "Server shutdown."}
puts "Starting server..."
server.start

…and the client code:

require 'soap/rpc/driver'
def usage
        puts "Usage: #{$0} hostname kstatvalue"
        puts "   Retrieves a kstat value from a remote machine's StatServ SOAP Server."
end

hostname = ARGV[0]
value    = ARGV[1];


if ! value
        usage;
        exit 1;
end

driver = SOAP::RPC::Driver.new("http://#{hostname}:8888/", 'urn:StatServ')
driver.add_method('kstat', 'stat')

val = driver.kstat("#{value}")

val.each do |s|
puts "#{s}"
end

• Arduinome Complete! PeterMarks.info
  
  
  (tags: dorkbotpdx electronics arduino avr)

• Lab3 – Labor fr experimentelle Informatik
  
  
  (tags: electronics diy arduino avr audio synth sound dorkbotpdx)

• First day at work in a week. It’s like I just got back from a vacation. #
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• Where are the good parties in Portland this New Year? #
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• Eating pho and watching Shogun. #
• Another night of Pho and Shogun! My life rocks! #
• Mmm.. Wiibrew. #

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