110 lines
2.9 KiB
Python
110 lines
2.9 KiB
Python
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#!/usr/bin/env python
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#
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# Copyright 2006 sense.lab e.V.
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#
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# This file is part of the CryptoBox.
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#
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# The CryptoBox is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# The CryptoBox is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with the CryptoBox; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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__revision__ = "$Id"
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## necessary: otherwise CryptoBoxRootActions.py will refuse to execute this script
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PLUGIN_TYPE = "cryptobox"
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IFCONFIG_BIN = "/sbin/ifconfig"
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ROUTE_BIN = "/sbin/route"
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import subprocess
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import re
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import sys
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def __changeIP(interface, ipaddress, netmask="0"):
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__check_address(ipaddress)
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if netmask == "0":
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## change the IP only
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proc = subprocess.Popen(
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shell = False,
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args = [IFCONFIG_BIN, interface, ipaddress])
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proc.wait()
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else:
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## someone wants to change the netmask too
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__check_address(netmask)
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proc = subprocess.Popen(
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shell = False,
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args = [IFCONFIG_BIN, interface, ipaddress, "netmask", netmask])
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proc.wait()
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return proc.returncode == 0
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def __changeGW(old_gw, new_gw):
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__check_address(old_gw)
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__check_address(new_gw)
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if old_gw != "0.0.0.0":
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## assume that a default route exists and delete it
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proc = subprocess.Popen(
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shell = False,
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args = [ROUTE_BIN, "del", "default", "gw", old_gw])
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proc.wait()
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## ignore errors
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proc = subprocess.Popen(
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shell = False,
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args = [ROUTE_BIN, "add", "default", "gw", new_gw])
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proc.wait()
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return proc.returncode == 0
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def __check_address(address):
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"""Check for correct numbers in given address
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"""
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match = re.search(r'^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$', address)
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## did we match? If yes, then: are there wrong values inside?
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if not match or [e for e in match.groups() if int(e) > 255]:
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sys.stderr.write("%s: illegal argument (%s)\n" % (self_bin, address))
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sys.exit(1)
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return
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if __name__ == "__main__":
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args = sys.argv[1:]
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self_bin = sys.argv[0]
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if len(args) == 0:
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sys.stderr.write("%s: no argument supplied\n" % self_bin)
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sys.exit(1)
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try:
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if args[0] == "change_ip":
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if len(args) != 4: raise "InvalidArgNum"
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result = __changeIP(args[1], args[2], args[3])
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elif args[0] == "change_gw":
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if len(args) != 3: raise "InvalidArgNum"
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result = __changeGW(args[1], args[2])
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else:
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sys.stderr.write("%s: invalid action (%s)\n" % (self_bin, args[0]))
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sys.exit(1)
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if result:
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sys.exit(0)
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else:
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sys.exit(1)
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except "InvalidArgNum":
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sys.stderr.write("%s: invalid number of arguments (%s)\n" % (self_bin, args))
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sys.exit(1)
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