78 lines
1.7 KiB
Ruby
78 lines
1.7 KiB
Ruby
# -*- coding: binary -*-
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require 'timeout'
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require 'thread'
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module Rex
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module Post
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module Meterpreter
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###
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#
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# This class handles waiting for a response to a given request
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# and the subsequent response association.
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#
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###
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class PacketResponseWaiter
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#
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# Initializes a response waiter instance for the supplied request
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# identifier.
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#
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def initialize(rid, completion_routine = nil, completion_param = nil)
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self.rid = rid.dup
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self.response = nil
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if (completion_routine)
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self.completion_routine = completion_routine
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self.completion_param = completion_param
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else
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self.mutex = Mutex.new
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self.cond = ConditionVariable.new
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end
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end
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#
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# Checks to see if this waiter instance is waiting for the supplied
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# packet based on its request identifier.
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#
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def waiting_for?(packet)
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return (packet.rid == rid)
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end
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#
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# Notifies the waiter that the supplied response packet has arrived.
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#
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def notify(response)
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if (self.completion_routine)
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self.response = response
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self.completion_routine.call(response, self.completion_param)
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else
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self.mutex.synchronize do
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self.response = response
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self.cond.signal
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end
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end
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end
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#
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# Waits for a given time interval for the response packet to arrive.
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# If the interval is -1 we can wait forever.
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#
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def wait(interval)
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interval = nil if interval and interval == -1
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self.mutex.synchronize do
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if self.response.nil?
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self.cond.wait(self.mutex, interval)
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end
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end
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return self.response
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end
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attr_accessor :rid, :mutex, :cond, :response # :nodoc:
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attr_accessor :completion_routine, :completion_param # :nodoc:
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end
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end; end; end
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