lib/rex/post/meterpreter/ui/console/interactive_channel.rb
# -*- coding: binary -*-
module Rex
module Post
module Meterpreter
module Ui
###
#
# Mixin that is meant to extend the base channel class from meterpreter in a
# manner that adds interactive capabilities.
#
###
module Console::InteractiveChannel
include Rex::Ui::Interactive
attr_accessor :raw
#
# Interacts with self.
#
def _interact
# If the channel has a left-side socket, then we can interact with it.
if (self.lsock)
self.interactive(true)
if raw
update_term_size
_local_fd.raw do
interact_stream(self)
end
else
interact_stream(self)
end
self.interactive(false)
else
print_error("Channel #{self.cid} does not support interaction.")
self.interacting = false
end
end
#
# Called when an interrupt is sent.
#
def _interrupt
prompt_yesno("Terminate channel #{self.cid}?")
end
#
# Suspends interaction with the channel.
#
def _suspend
# Ask the user if they would like to background the session
if (prompt_yesno("Background channel #{self.cid}?") == true)
self.interactive(false)
self.interacting = false
end
end
#
# Closes the channel like it aint no thang.
#
def _interact_complete
begin
self.interactive(false)
self.close
rescue IOError
end
end
#
# Reads data from local input and writes it remotely.
#
def _stream_read_local_write_remote(channel)
if raw
data = user_input.sysread(1024)
else
data = user_input.gets
end
return if not data
self.on_command_proc.call(data.strip) if self.on_command_proc
self.write(data)
end
#
# Reads from the channel and writes locally.
#
def _stream_read_remote_write_local(channel)
data = self.lsock.sysread(16384)
self.on_print_proc.call(data.strip) if self.on_print_proc
self.on_log_proc.call(data.strip) if self.on_log_proc
user_output.print(data)
end
#
# Returns the remote file descriptor to select on
#
def _remote_fd(stream)
self.lsock
end
attr_accessor :rows
attr_accessor :cols
def _winch
update_term_size
end
def update_term_size
return unless self.client.commands.include?(Extensions::Stdapi::COMMAND_ID_STDAPI_SYS_PROCESS_SET_TERM_SIZE)
rows, cols = ::IO.console.winsize
unless rows == self.rows && cols == self.cols
set_term_size(rows, cols)
self.rows = rows
self.cols = cols
end
end
def set_term_size(rows, columns)
if self.cid.nil?
raise IOError, 'Channel has been closed.', caller
end
request = Packet.create_request(Extensions::Stdapi::COMMAND_ID_STDAPI_SYS_PROCESS_SET_TERM_SIZE)
request.add_tlv(TLV_TYPE_CHANNEL_ID, self.cid)
request.add_tlv(Extensions::Stdapi::TLV_TYPE_TERMINAL_ROWS, rows)
request.add_tlv(Extensions::Stdapi::TLV_TYPE_TERMINAL_COLUMNS, columns)
self.client.send_packet(request)
end
attr_accessor :on_log_proc
end
end
end
end
end