module Msf

###
# 
# This class hooks all sockets created by a running exploit 
#
###

class Plugin::SocketLogger < Msf::Plugin

	###
	#
	# This class implements a socket communication logger
	#
	###
	class MySocketEventHandler
		include Rex::Socket::Comm::Events
		
		def initialize(path, prefix)
			@path   = path
			@prefix = prefix
		end

		def on_before_socket_create(comm, param)
		end

		def on_socket_created(comm, sock, param)
			# Sockets created by the exploit have MsfExploit set and MsfPayload not set
			if (param.context['MsfExploit'] and (! param.context['MsfPayload'] ))
				sock.extend(SocketLogger::SocketTracer)
				sock.context = param.context
				sock.params = param
				sock.initlog(@path, @prefix)
				
			end
		end		
	end
	

	def initialize(framework, opts)
		log_path    = opts['path'] || "/tmp"
		log_prefix  = opts['prefix'] || "socket_"
		
		super
		@eh = MySocketEventHandler.new(log_path, log_prefix)
		Rex::Socket::Comm::Local.register_event_handler(@eh)
	end

	def cleanup
		Rex::Socket::Comm::Local.deregister_event_handler(@eh)
	end

	def name
		"socket_logger"
	end

	def desc
		"Logs all socket operations to hex dumps in /tmp"
	end

protected
end

end

# This module extends the captured socket instance
module SocketLogger
module SocketTracer

	@@last_id = 0
	
	attr_accessor :context, :params

	# Hook the write method
	def write(buf, opts = {})
		@fd.puts "WRITE (#{buf.length} bytes)"
		@fd.puts Rex::Text.to_hex_dump(buf)
		super(buf, opts)
	end

	# Hook the read method
	def read(length = nil, opts = {})
		r = super(length, opts)
		
		@fd.puts "READ (#{r.length} bytes)"
		@fd.puts Rex::Text.to_hex_dump(r)
		return r
	end

	def close(*args)
		super(*args)
		@fd.close
	end
	
	def initlog(path, prefix)
		@log_path    = path
		@log_prefix  = prefix
		@log_id      = @@last_id
		@@last_id   += 1
		@fd = File.open(File.join(@log_path, "#{@log_prefix}#{@log_id}.log"), "w")
		@fd.puts "Socket created at #{Time.now}"
		@fd.puts "Info: #{params.proto} #{params.localhost}:#{params.localport} -> #{params.peerhost}:#{params.peerport}"
		@fd.puts ""
	end

end
end