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# Ron Sweeney | |
# Dev Arboretum | |
# Original Post: http://www.clubpacswestmi.net/articles/2007/4/1/a-ruby-hl7-sniffer | |
require 'pcap' | |
require 'Ethernet' | |
require 'rubygems' | |
require 'ruby-hl7' | |
def printable(str) | |
return "" unless str | |
str.strip.dump.gsub(/\\[0-9]/,'') | |
end | |
dev = Pcap.lookupdev | |
capture = Pcap::Capture.open_live( dev ) | |
capture.loop do |packet| | |
eth = Ethernet.new( packet.raw_data ) | |
if eth.payload =~ /\vMSH(.*)\r/ | |
puts "==== HL7 Message Detected on Wire ====\n" | |
puts "Src: #{eth.src} --=> Dest: #{eth.dest}\n" | |
woot = printable(eth.payload.to_s) | |
gar2 = woot.split("\\v") | |
msg = gar2[1].split("\\r") | |
msg.pop | |
hl7msg = HL7::Message.new(msg) | |
ele = hl7msg[:MSH].element_delim | |
ite = hl7msg[:MSH].item_delim | |
puts "Message type: %s\n" % hl7msg[:MSH].message_type | |
puts "HL7 Version: %s\n\n" % hl7msg[:MSH].version_id | |
hl7msg.each do |liner| | |
puts liner | |
#elements = liner.to_s.split(ele) | |
#elements.each do |eleprint| | |
#puts "\t" + eleprint | |
end | |
puts "\n" + "=" * 38 + "\n" | |
end | |
end | |
capture.close |
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