Module: Rex::Post::Meterpreter::PacketDispatcher

Included in:
Client
Defined in:
lib/rex/post/meterpreter/packet_dispatcher.rb

Overview

Handles packet transmission, reception, and correlation, and processing

Constant Summary collapse

PACKET_TIMEOUT =

Default time, in seconds, to wait for a response after sending a packet

600
PING_TIME =

Number of seconds to wait without getting any packets before we try to send a liveness check. A minute should be generous even on the highest latency networks

See Also:

60

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#comm_mutex ⇒ Object

This mutex is used to lock out new commands during an active migration. Unused if this is a passive dispatcher



60
61
62
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 60

def comm_mutex
  @comm_mutex
end

#dispatcher_thread ⇒ Object (protected)

:nodoc:



653
654
655
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 653

def dispatcher_thread
  @dispatcher_thread
end

#passive_service ⇒ Rex::ServiceManager?

Passive Dispatching

Returns:



72
73
74
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 72

def passive_service
  @passive_service
end

#receiver_thread ⇒ Object (protected)

:nodoc:



652
653
654
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 652

def receiver_thread
  @receiver_thread
end

#recv_queue ⇒ Array

Returns:

  • (Array) 


78
79
80
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 78

def recv_queue
  @recv_queue
end

#send_queue ⇒ Array

Returns:

  • (Array) 


75
76
77
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 75

def send_queue
  @send_queue
end

#session_guid ⇒ Object

The guid that identifies an active Meterpreter session



63
64
65
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 63

def session_guid
  @session_guid
end

#tlv_enc_key ⇒ Object

This contains the key material used for TLV encryption



66
67
68
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 66

def tlv_enc_key
  @tlv_enc_key
end

#tlv_log_file ⇒ Object (protected)

:nodoc:



657
658
659
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 657

def tlv_log_file
  @tlv_log_file
end

#tlv_log_file_path ⇒ Object (protected)

:nodoc:



658
659
660
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 658

def tlv_log_file_path
  @tlv_log_file_path
end

#tlv_log_output ⇒ Object (protected)

:nodoc:



656
657
658
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 656

def tlv_log_output
  @tlv_log_output
end

#tlv_logging_error_occured ⇒ Object (protected)

:nodoc:



659
660
661
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 659

def tlv_logging_error_occured
  @tlv_logging_error_occured
end

#waiters ⇒ Object (protected)

:nodoc:



654
655
656
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 654

def waiters
  @waiters
end

Instance Method Details

#add_response_waiter(request, completion_routine = nil, completion_param = nil) ⇒ Object

Adds a waiter association with the supplied request packet.



504
505
506
507
508
509
510
511
512
513
514
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 504

def add_response_waiter(request, completion_routine = nil, completion_param = nil)
  if self.pivot_session
    return self.pivot_session.add_response_waiter(request, completion_routine, completion_param)
  end

  waiter = PacketResponseWaiter.new(request.rid, completion_routine, completion_param)

  self.waiters << waiter

  return waiter
end

#decrypt_inbound_packet(packet) ⇒ Object

Decrypt the given packet with the appropriate key depending on if this session is a pivot session or not.



565
566
567
568
569
570
571
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 565

def decrypt_inbound_packet(packet)
  pivot_session = self.find_pivot_session(packet.session_guid)
  tlv_enc_key = self.tlv_enc_key
  tlv_enc_key = pivot_session.pivoted_session.tlv_enc_key if pivot_session
  packet.from_r(tlv_enc_key)
  packet
end

#deregister_inbound_handler(handler) ⇒ Object

Deregisters a previously registered inbound packet handler.



632
633
634
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 632

def deregister_inbound_handler(handler)
  @inbound_handlers.delete(handler)
end

#dispatch_inbound_packet(packet) ⇒ Object

Dispatches and processes an inbound packet. If the packet is a response that has an associated waiter, the waiter is notified. Otherwise, the packet is passed onto any registered dispatch handlers until one returns success.



579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 579

def dispatch_inbound_packet(packet)
  handled = false

  log_packet(packet, :recv)

  # Update our last reply time
  self.last_checkin = ::Time.now

  pivot_session = self.find_pivot_session(packet.session_guid)
  pivot_session.pivoted_session.last_checkin = self.last_checkin if pivot_session

  # If the packet is a response, try to notify any potential
  # waiters
  if packet.response? && notify_response_waiter(packet)
    return true
  end

  # Enumerate all of the inbound packet handlers until one handles
  # the packet
  @inbound_handlers.each { |handler|

    handled = nil
    begin

      if packet.response?
        handled = handler.response_handler(self, packet)
      else
        handled = handler.request_handler(self, packet)
      end

    rescue ::Exception => e
      dlog("Exception caught in dispatch_inbound_packet: handler=#{handler} #{e.class} #{e} #{e.backtrace}", 'meterpreter', LEV_1)
      return true
    end

    if (handled)
      break
    end
  }
  return handled
end

#initialize_inbound_handlers ⇒ Object

Initializes the inbound handlers.



557
558
559
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 557

def initialize_inbound_handlers
  @inbound_handlers = []
end

#initialize_passive_dispatcher ⇒ Object 



80
81
82
83
84
85
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 80

def initialize_passive_dispatcher
  self.send_queue   = []
  self.recv_queue   = []
  self.waiters      = []
  self.alive        = true
end

#initialize_tlv_logging(opt) ⇒ Object 



636
637
638
639
640
641
642
643
644
645
646
647
648
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 636

def initialize_tlv_logging(opt)
  self.tlv_logging_error_occured = false
  self.tlv_log_file = nil
  self.tlv_log_file_path = nil
  self.tlv_log_output = :none

  if opt.casecmp?('console') || opt.casecmp?('true')
    self.tlv_log_output = :console
  elsif opt.start_with?('file:')
    self.tlv_log_output = :file
    self.tlv_log_file_path = opt.split('file:').last
  end
end

#keepalive ⇒ void

This method returns an undefined value.

Send a ping to the server.

Our 'ping' is a check for eof on channel id 0. This method has no side effects and always returns an answer (regardless of the existence of chan 0), which is all that's needed for a liveness check. The answer itself is unimportant and is ignored.



259
260
261
262
263
264
265
266
267
268
269
270
271
272
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 259

def keepalive
  if @ping_sent
    if ::Time.now.to_i - last_checkin.to_i > PING_TIME*2
      dlog("No response to ping, session #{self.sid} is dead", LEV_3)
      self.alive = false
    end
  else
    pkt = Packet.create_request(COMMAND_ID_CORE_CHANNEL_EOF)
    pkt.add_tlv(TLV_TYPE_CHANNEL_ID, 0)
    add_response_waiter(pkt, Proc.new { @ping_sent = false })
    send_packet(pkt)
    @ping_sent = true
  end
end

#log_packet(packet, packet_type) ⇒ Object (protected) 



668
669
670
671
672
673
674
675
676
677
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 668

def log_packet(packet, packet_type)
  # if we previously failed to log, return
  return if self.tlv_logging_error_occured || self.tlv_log_output == :none

  if self.tlv_log_output == :console
    log_packet_to_console(packet, packet_type)
  elsif self.tlv_log_output == :file
    log_packet_to_file(packet, packet_type)
  end
end

#log_packet_to_console(packet, packet_type) ⇒ Object (protected) 



679
680
681
682
683
684
685
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 679

def log_packet_to_console(packet, packet_type)
  if packet_type == :send
    print "\n%redSEND%clr: #{packet.inspect}\n"
  elsif packet_type == :recv
    print "\n%bluRECV%clr: #{packet.inspect}\n"
  end
end

#log_packet_to_file(packet, packet_type) ⇒ Object (protected) 



687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 687

def log_packet_to_file(packet, packet_type)
  pathname = ::Pathname.new(self.tlv_log_file_path.split('file:').last)

  begin
    if self.tlv_log_file.nil? || self.tlv_log_file.path != pathname.to_s
      self.tlv_log_file.close unless self.tlv_log_file.nil?

      self.tlv_log_file = ::File.open(pathname, 'a+')
    end

    if packet_type == :recv
      self.tlv_log_file.puts("\nRECV: #{packet.inspect}\n")
    elsif packet_type == :send
      self.tlv_log_file.puts("\nSEND: #{packet.inspect}\n")
    end
  rescue ::StandardError => e
    self.tlv_logging_error_occured = true
    print_error "Failed writing to TLV Log File: #{pathname} with error: #{e.message}. Turning off logging for this session: #{self.inspect}..."
    elog(e)
    shutdown_tlv_logging
    return
  end
end

#monitor_socket ⇒ Object

Monitors the PacketDispatcher's sock for data in its own thread context and parsers all inbound packets.



301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 301

def monitor_socket

  # Skip if we are using a passive dispatcher
  return if self.passive_service

  # redirect to pivot keepalive if we're a pivot session
  return pivot_keepalive_start if self.pivot_session

  self.comm_mutex = ::Mutex.new

  self.waiters = []

  # This queue is where the new incoming packets end up
  @new_packet_queue = ::Queue.new
  # This is where we put packets that aren't new, but haven't
  # yet been handled.
  @incomplete_queue = ::Queue.new
  @ping_sent = false

  # Spawn a thread for receiving packets
  self.receiver_thread = Rex::ThreadFactory.spawn("MeterpreterReceiver", false) do
    while (self.alive)
      begin
        rv = Rex::ThreadSafe.select([ self.sock.fd ], nil, nil, PING_TIME)
        if rv
          packet = receive_packet
          # Always enqueue the new packets onto the new packet queue
          @new_packet_queue << decrypt_inbound_packet(packet) if packet
        elsif self.send_keepalives && @new_packet_queue.empty?
          keepalive
        end
      rescue ::Exception => e
        dlog("Exception caught in monitor_socket: #{e.class}: #{e}", 'meterpreter', LEV_1)
        dlog("Call stack: #{e.backtrace.join("\n")}", 'meterpreter', LEV_2)
        self.alive = false
        break
      end
    end
  end

  # Spawn a new thread that monitors the socket
  self.dispatcher_thread = Rex::ThreadFactory.spawn("MeterpreterDispatcher", false) do
    begin
    while (self.alive)
      # This is where we'll store incomplete packets on
      # THIS iteration
      incomplete = []
      # The backlog is the full list of packets that aims
      # to be handled this iteration
      backlog    = []

      # If we have any left over packets from the previous
      # iteration, we need to prioritise them over the new
      # packets. If we don't do this, then we end up in
      # situations where data on channels can be processed
      # out of order. We don't do a blocking wait here via
      # the .pop method because we don't want to block, we
      # just want to dump the queue.
      while @incomplete_queue.length > 0
        backlog << @incomplete_queue.pop
      end

      # If the backlog is empty, we don't have old/stale
      # packets hanging around, so perform a blocking wait
      # for the next packet
      backlog << @new_packet_queue.pop if backlog.length == 0
      # At this point we either received a packet off the wire
      # or we had a backlog to process. In either case, we
      # perform a non-blocking queue dump to fill the backlog
      # with every packet we have.
      while @new_packet_queue.length > 0
        backlog << @new_packet_queue.pop
      end

      #
      # Prioritize message processing here
      # 1. Close should always be processed at the end
      # 2. Command responses always before channel data
      #

      tmp_command = []
      tmp_channel = []
      tmp_close   = []
      backlog.each do |pkt|
        if(pkt.response?)
          tmp_command << pkt
          next
        end
        if(pkt.method == COMMAND_ID_CORE_CHANNEL_CLOSE)
          tmp_close << pkt
          next
        end
        tmp_channel << pkt
      end

      backlog = []
      backlog.push(*tmp_command)
      backlog.push(*tmp_channel)
      backlog.push(*tmp_close)

      #
      # Process the message queue
      #
      backlog.each do |pkt|

        begin
        unless dispatch_inbound_packet(pkt)
          # Keep Packets in the receive queue until a handler is registered
          # for them. Packets will live in the receive queue for up to
          # PACKET_TIMEOUT seconds, after which they will be dropped.
          #
          # A common reason why there would not immediately be a handler for
          # a received Packet is in channels, where a connection may
          # open and receive data before anything has asked to read.
          if (::Time.now.to_i - pkt.created_at.to_i < PACKET_TIMEOUT)
            incomplete << pkt
          end
        end

        rescue ::Exception => e
          dlog("Dispatching exception with packet #{pkt}: #{e} #{e.backtrace}", 'meterpreter', LEV_1)
        end
      end

      # If the backlog and incomplete arrays are the same, it means
      # dispatch_inbound_packet wasn't able to handle any of the
      # packets. When that's the case, we can get into a situation
      # where @new_packet_queue is not empty and, since nothing else bounds this
      # loop, we spin CPU trying to handle packets that can't be
      # handled. Sleep here to treat that situation as though the
      # queue is empty.
      if (backlog.length > 0 && backlog.length == incomplete.length)
        ::IO.select(nil, nil, nil, 0.10)
      end

      # If we have any packets that weren't handled, they go back
      # on the incomplete queue so that they're prioritised over
      # new packets that are coming in off the wire.
      dlog("Requeuing #{incomplete.length} packet(s)", 'meterpreter', LEV_1) if incomplete.length > 0
      while incomplete.length > 0
        @incomplete_queue << incomplete.shift
      end

      # If the old queue of packets gets too big...
      if(@incomplete_queue.length > 100)
        removed = []
        # Drop a bunch of them.
        (1..25).each {
          removed << @incomplete_queue.pop
        }
        dlog("Backlog has grown to over 100 in monitor_socket, dropping older packets: #{removed.map{|x| x.inspect}.join(" - ")}", 'meterpreter', LEV_1)
      end
    end
    rescue ::Exception => e
      dlog("Exception caught in monitor_socket dispatcher: #{e.class} #{e} #{e.backtrace}", 'meterpreter', LEV_1)
    ensure
      self.receiver_thread.kill if self.receiver_thread
    end
  end
end

#monitor_stop ⇒ Object

Stop the monitor



481
482
483
484
485
486
487
488
489
490
491
492
493
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 481

def monitor_stop
  if self.receiver_thread
    self.receiver_thread.kill
    self.receiver_thread.join
    self.receiver_thread = nil
  end

  if self.dispatcher_thread
    self.dispatcher_thread.kill
    self.dispatcher_thread.join
    self.dispatcher_thread = nil
  end
end

#notify_response_waiter(response) ⇒ Object

Notifies a whomever is waiting for a the supplied response, if anyone.



520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 520

def notify_response_waiter(response)
  if self.pivot_session
    return self.pivot_session.notify_response_waiter(response)
  end

  handled = false
  self.waiters.each() { |waiter|
    if (waiter.waiting_for?(response))
      waiter.notify(response)
      remove_response_waiter(waiter)
      handled = true
      break
    end
  }
  return handled
end

#on_passive_request(cli, req) ⇒ Object 



94
95
96
97
98
99
100
101
102
103
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 94

def on_passive_request(cli, req)
  begin
    self.last_checkin = ::Time.now
    resp = send_queue.shift
    cli.send_response(resp)
  rescue => e
    send_queue.unshift(resp) if resp
    elog("Exception sending a reply to the reader request #{cli.inspect}", error: e)
  end
end

#pivot_keepalive_start ⇒ Object

Reception



280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 280

def pivot_keepalive_start
  return unless self.send_keepalives
  self.receiver_thread = Rex::ThreadFactory.spawn("PivotKeepalive", false) do
    while self.alive
      begin
        Rex::sleep(PING_TIME)
        keepalive
      rescue ::Exception => e
        dlog("Exception caught in pivot keepalive: #{e.class}: #{e}", 'meterpreter', LEV_1)
        dlog("Call stack: #{e.backtrace.join("\n")}", 'meterpreter', LEV_2)
        self.alive = false
        break
      end
    end
  end
end

#receive_packet ⇒ Object

Parses data from the dispatcher's sock and returns a Packet context once a full packet has been received.



467
468
469
470
471
472
473
474
475
476
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 467

def receive_packet
  packet = parser.recv(self.sock)
  if packet
    packet.parse_header!
    if self.session_guid == NULL_GUID
      self.session_guid = packet.session_guid.dup
    end
  end
  packet
end

#register_inbound_handler(handler) ⇒ Object

Registers an inbound packet handler that implements the InboundPacketHandler interface.



625
626
627
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 625

def register_inbound_handler(handler)
  @inbound_handlers << handler
end

#remove_response_waiter(waiter) ⇒ Object

Removes a waiter from the list of waiters.



540
541
542
543
544
545
546
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 540

def remove_response_waiter(waiter)
  if self.pivot_session
    self.pivot_session.remove_response_waiter(waiter)
  else
    self.waiters.delete(waiter)
  end
end

#send_packet(packet, opts = {}) ⇒ Object

Sends a packet without waiting for a response.



114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 114

def send_packet(packet, opts={})
  if self.pivot_session
    opts[:session_guid] = self.session_guid
    opts[:tlv_enc_key] = self.tlv_enc_key
    return self.pivot_session.send_packet(packet, opts)
  end

  if opts[:completion_routine]
    add_response_waiter(packet, opts[:completion_routine], opts[:completion_param])
  end

  session_guid = self.session_guid
  tlv_enc_key = self.tlv_enc_key

  # if a session guid is provided, use all the details provided
  if opts[:session_guid]
    session_guid = opts[:session_guid]
    tlv_enc_key = opts[:tlv_enc_key]
  end

  log_packet(packet, :send)

  bytes = 0
  raw   = packet.to_r(session_guid, tlv_enc_key)
  err   = nil

  # Short-circuit send when using a passive dispatcher
  if self.passive_service
    send_queue.push(raw)
    return raw.size # Lie!
  end

  if raw
    self.comm_mutex.synchronize do
      begin
        bytes = self.sock.write(raw)
      rescue ::Exception => e
        err = e
      end
    end


    if bytes.to_i == 0
      # Mark the session itself as dead
      self.alive = false

      # Reraise the error to the top-level caller
      raise err if err
    end
  end

  return bytes
end

#send_packet_wait_response(packet, timeout) ⇒ Object

Transmits a packet and waits for a response.

Parameters:

  • packet (Packet) —

    the request packet to send

  • timeout (Integer, nil) —

    number of seconds to wait, or nil to wait forever



200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 200

def send_packet_wait_response(packet, timeout)
  if packet.type == PACKET_TYPE_REQUEST && commands.present?
    # XXX: Remove this condition once the payloads gem has had another major version bump from 2.x to 3.x and
    # rapid7/metasploit-payloads#451 has been landed to correct the `enumextcmd` behavior on Windows. Until then, skip
    # proactive validation of Windows core commands. This is not the only instance of this workaround.
    windows_core = base_platform == 'windows' && (packet.method - (packet.method % COMMAND_ID_RANGE)) == Rex::Post::Meterpreter::ClientCore.extension_id

    unless windows_core || commands.include?(packet.method)
      if (ext_name = Rex::Post::Meterpreter::ExtensionMapper.get_extension_name(packet.method))
        unless ext.aliases.include?(ext_name)
          raise RequestError.new(packet.method, "The command requires the #{ext_name} extension to be loaded")
        end
      end
      raise RequestError.new(packet.method, "The command is not supported by this Meterpreter type (#{session_type})")
    end
  end

  # First, add the waiter association for the supplied packet
  waiter = add_response_waiter(packet)

  bytes_written = send_packet(packet)

  # Transmit the packet
  if (bytes_written.to_i <= 0)
    # Remove the waiter if we failed to send the packet.
    remove_response_waiter(waiter)
    return nil
  end

  if not timeout
    return nil
  end

  # Wait for the supplied time interval
  response = waiter.wait(timeout)

  # Remove the waiter from the list of waiters in case it wasn't
  # removed. This happens if the waiter timed out above.
  remove_response_waiter(waiter)

  # wire in the UUID for this, as it should be part of every response
  # packet
  if response && !self.payload_uuid
    uuid = response.get_tlv_value(TLV_TYPE_UUID)
    self.payload_uuid = Msf::Payload::UUID.new({:raw => uuid}) if uuid
  end

  # Return the response packet, if any
  return response
end

#send_request(packet, timeout = self.response_timeout) ⇒ Object

Sends a packet and waits for a timeout for the given time interval.

Parameters:

  • packet (Packet) —

    request to send

  • timeout (Integer, nil) (defaults to: self.response_timeout) —

    seconds to wait for response, or nil to ignore the response and return immediately



175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 175

def send_request(packet, timeout = self.response_timeout)
  response = send_packet_wait_response(packet, timeout)

  if timeout.nil?
    return nil
  elsif response.nil?
    raise Rex::TimeoutError.new("Send timed out")
  elsif (response.result != 0)
    einfo = lookup_error(response.result)
    e = RequestError.new(packet.method, einfo, response.result)

    e.set_backtrace(caller)

    raise e
  end

  return response
end

#shutdown_passive_dispatcher ⇒ Object 



87
88
89
90
91
92
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 87

def shutdown_passive_dispatcher
  self.alive      = false
  self.send_queue = []
  self.recv_queue = []
  self.waiters    = []
end

#shutdown_tlv_logging ⇒ Object (protected) 



661
662
663
664
665
666
 
# File 'lib/rex/post/meterpreter/packet_dispatcher.rb', line 661

def shutdown_tlv_logging
  self.tlv_log_output = :none
  self.tlv_log_file.close unless self.tlv_log_file.nil?
  self.tlv_log_file = nil
  self.tlv_log_file_path = nil
end