############################################################################
##
## Copyright (c) 2000, 2001 BalaBit IT Ltd, Budapest, Hungary
##
## 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
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## 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.
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## 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., 675 Mass Ave, Cambridge, MA 02139, USA.
##
## $Id: policy.py.sample,v 1.10.2.2.4.2 2001/11/08 11:20:48 bazsi Exp $
##
############################################################################

#
# sample firewall policy with transparent access to FTP, HTTP and CVS protocols.
# For FTP and HTTP we use application level gateways, for CVS we use a plug.
# (as long as CVS protocol proxy is not available)
#

from Zorp.Core import *
from Zorp.Http import *
from Zorp.Plug import *
from Zorp.Ftp import *
from Zorp.Matcher import *

Zorp.firewall_name = 'zorp@site'

InetZone("site-net", "0.0.0.0/0", 
	 # list of allowed outbound services, '*' matches anything
	 outbound_services=["intra_http", "intra_ftp", "intra_cvs"],
		
	 # list of allowed inbound services, '*' matches anything
	 inbound_services=[]),
		
InetZone("local", "127.0.0.0/8",
         inbound_services=["*"],
         outbound_services=[]),
        
InetZone("internet", "VEDETT/HALO",
         inbound_services=["*"],
         outbound_services=[])

# 
# Here's a proxy event handler definition. We are deriving from a
# simple plug proxy, which is blindly copying in both directions.
#
# Instances of this class represent a "plug proxy". For a complete
# documentation for the features and available attributes of plug see the
# file /doc/modules/plug.txt
#

class IntraHttp(HttpProxy):

        def config(self):
        	HttpProxy.config(self)
                self.transparent_mode = TRUE
                self.request["GET"] = (HTTP_REQ_POLICY, self.filterURL)
                
	def filterURL(self, method, url, version):
	        # return Z_REJECT here to reject this request
	        # change self.request_url to redirect to another url
	        # change connection_mode to HTTP_CONNECTION_CLOSE to force kept-alive connections to close
	        log("http.info", 3, "%s: GET: %s" % (self.session.session_id, url))
		return HTTP_REQ_ACCEPT

class IntraHttp(HttpProxyURIFilter):
        matcher=RegexpFileMatcher('/usr/local/zorp/etc/zorp/http.deny', '/usr/local/zorp/etc/zorp/http.ignore')


class IntraFtp(FtpProxy):
	def config(self):
		FtpProxy.config(self)
		self.transparent_mode = TRUE

#
# name is passed to the Zorp instance with the --as command line option
# you can use it to start different services for different names
# In this simple policy we ignore it.
#
def init(name):
	
	# create services

	Service("intra_http", IntraHttp, router=TransparentRouter())
	Service("intra_ftp", IntraFtp, router=TransparentRouter())
	
	# bind services to listeners
	# you'll need the packet filter redirect these connections, and
	# to protect transparent listeners, since if you connect to
	# a transparent listener directly, Zorp reconnects to itself.
	Listener(SockAddrInet("TUZFALIP", 50080), "intra_http")
	Listener(SockAddrInet("TUZFALIP", 50021), "intra_ftp")