75 lines
1.9 KiB
Ruby
75 lines
1.9 KiB
Ruby
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#
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# Copyright (c) 2004 David R. Halliday
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# All rights reserved.
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#
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# This SNMP library is free software. Redistribution is permitted under the
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# same terms and conditions as the standard Ruby distribution. See the
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# COPYING file in the Ruby distribution for details.
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#
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require 'snmp'
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require 'socket'
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require 'logger'
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module SNMP
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class Agent #:nodoc:all
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def initialize(listen_port=161, max_packet=8000)
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@log = Logger.new(STDOUT)
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@log.level = Logger::DEBUG
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@max_packet = max_packet
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@socket = UDPSocket.open
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@socket.bind(nil, listen_port)
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@mib = MIB::SystemMIB.new
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end
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def start
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@log.info "SNMP agent running"
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loop do
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begin
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data, remote_info = @socket.recvfrom(@max_packet)
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puts "Received #{data.length} bytes"
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p data
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message = Message.decode(data)
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case message.pdu
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when GetRequest
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response = message.response
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response.pdu.varbind_list.each do |v|
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v.value = @mib.get(v.name)
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end
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when SetRequest
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response = message.response
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else
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raise "invalid message #{message.to_s}"
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end
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puts "Responding to #{remote_info[3]}:#{remote_info[1]}"
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encoded_message = response.encode
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n=@socket.send(encoded_message, 0, remote_info[3], remote_info[1])
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p encoded_message
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rescue => e
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@log.error e
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shutdown
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end
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end
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end
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def shutdown
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@log.info "SNMP agent stopping"
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@socket.close
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exit
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end
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alias stop :shutdown
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end
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end
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if $0 == __FILE__
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agent = SNMP::Agent.new(1061)
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trap("INT") { agent.shutdown }
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agent.start
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end
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