#!/usr/bin/env python
"""
$Id$
"""

__license__ = """

Copyright (C) 2008 Diego Torres Milano <diego at codtech dot com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA
"""

__name__ = 'android port redirection'
__version__ = '0.3'
__rev__ = '$Revision$'

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# redirections can be added to ~/android/redir.conf, one per line,
# as an example, 'tcp:5000:6000' will route any packet sent to the host's
# TCP port 5000 to TCP port 6000 of the emulated device
#
# default emulated device:
host = 'localhost'
port = 5554
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

import sys
import os
from optparse import OptionParser
import pexpect

usage = "usage: %prog [options] [{tcp|udp}:hostport:emuport] ..."

parser = OptionParser(usage=usage, version="%prog " + __version__)
parser.add_option("-v", "--verbose", dest="verbose", default=False,
	action="store_true",
	help="verbose output [default: %default]")
parser.add_option("", "--host", dest="host", default=host,
	help="HOST where emulator is running [default: %default]")
parser.add_option("-p", "--port", dest="port", default=port,
	help="emulator console PORT [default: %default]")
parser.add_option("-n", "--dry-run", dest="dry_run", default=False,
	action="store_true",
	help="Don't execute the commands")
(options, args) = parser.parse_args()

redirs = []
cmd = 'telnet %s %d' % (options.host, options.port)

try:
	for redir in open(os.path.expanduser("~") + "/.android/redir.conf"):
		redirs.append(redir[:-1])
except:
	pass

for redir in args:
	redirs.append(redir)

if options.verbose:
	print cmd
	if len(redirs) > 0:
		print "adding redirections:"
		for redir in redirs:
			print "\t" + redir

if options.dry_run:
	sys.exit(0)

if len(redirs) == 0:
	print >>sys.stderr, "ERROR: redirection list is empty."
	sys.exit(1)

child = pexpect.spawn(cmd)
child.expect("OK")

for redir in redirs:
	child.sendline("redir add " + redir)
	r = child.expect(["OK", "KO: host port already active", "KO:.*"])
	if r == 2:
		raise Exception(child.after)

if options.verbose:
	child.sendline("redir list")
	child.expect("OK")
	print child.before

child.sendline("quit")