105 lines
1.9 KiB
Ruby
105 lines
1.9 KiB
Ruby
|
require 'rex'
|
||
|
|
|
||
|
|
module Net
|
||
|
|
module SSH
|
||
|
|
|
||
|
|
class CommandStream
|
||
|
|
|
||
|
|
attr_accessor :channel, :thread, :error, :ssh
|
||
|
|
attr_accessor :lsock, :rsock, :monitor
|
||
|
|
|
||
|
|
module PeerInfo
|
||
|
|
include ::Rex::IO::Stream
|
||
|
|
attr_accessor :peerinfo
|
||
|
|
attr_accessor :localinfo
|
||
|
|
end
|
||
|
|
|
||
|
|
def initialize(ssh, cmd, cleanup = false)
|
||
|
|
|
||
|
|
self.lsock, self.rsock = Rex::Socket.tcp_socket_pair()
|
||
|
|
self.lsock.extend(Rex::IO::Stream)
|
||
|
|
self.lsock.extend(PeerInfo)
|
||
|
|
self.rsock.extend(Rex::IO::Stream)
|
||
|
|
|
||
|
|
self.ssh = ssh
|
||
|
|
self.thread = Thread.new(ssh,cmd,cleanup) do |rssh,rcmd,rcleanup|
|
||
|
|
|
||
|
|
begin
|
||
|
|
|
||
|
|
info = ssh.transport.socket.getpeername
|
||
|
|
self.lsock.peerinfo = "#{info[1]}:#{info[2]}"
|
||
|
|
|
||
|
|
info = ssh.transport.socket.getsockname
|
||
|
|
self.lsock.localinfo = "#{info[1]}:#{info[2]}"
|
||
|
|
|
||
|
|
rssh.open_channel do |rch|
|
||
|
|
rch.exec(rcmd) do |c, success|
|
||
|
|
raise "could not execute command: #{rcmd.inspect}" unless success
|
||
|
|
|
||
|
|
c[:data] = ''
|
||
|
|
|
||
|
|
c.on_eof do
|
||
|
|
self.rsock.close
|
||
|
|
self.thread.kill
|
||
|
|
end
|
||
|
|
|
||
|
|
c.on_close do
|
||
|
|
self.rsock.close
|
||
|
|
self.thread.kill
|
||
|
|
end
|
||
|
|
|
||
|
|
c.on_data do |ch,data|
|
||
|
|
self.rsock.write(data)
|
||
|
|
end
|
||
|
|
|
||
|
|
c.on_extended_data do |ch, ctype, data|
|
||
|
|
self.rsock.write(data)
|
||
|
|
end
|
||
|
|
|
||
|
|
self.channel = c
|
||
|
|
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
self.monitor = Thread.new do
|
||
|
|
while(true)
|
||
|
|
next if not self.rsock.has_read_data?(1.0)
|
||
|
|
buff = self.rsock.sysread(16384)
|
||
|
|
break if not buff
|
||
|
|
verify_channel
|
||
|
|
self.channel.send_data(buff) if buff
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
while true
|
||
|
|
rssh.process(0.5) { true }
|
||
|
|
end
|
||
|
|
|
||
|
|
rescue ::Exception => e
|
||
|
|
self.error = e
|
||
|
|
ensure
|
||
|
|
self.monitor.kill if self.monitor
|
||
|
|
end
|
||
|
|
|
||
|
|
# Shut down the SSH session if requested
|
||
|
|
if(rcleanup)
|
||
|
|
rssh.close
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
#
|
||
|
|
# Prevent a race condition
|
||
|
|
#
|
||
|
|
def verify_channel
|
||
|
|
while ! self.channel
|
||
|
|
raise EOFError if ! self.thread.alive?
|
||
|
|
select(nil, nil, nil, 0.10)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|