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#
# firewall_gui.py: firewall setup screen
#
# Copyright 2001-2003 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import checklist
import gtk
import gui
from iw_gui import *
from isys import *
from rhpl.translate import _, N_
class FirewallWindow (InstallWindow):
windowTitle = N_("Firewall")
htmlTag = "securitylevel"
def __init__ (self, ics):
InstallWindow.__init__ (self, ics)
def getNext (self):
if self.disabled_radio.get_active ():
self.firewall.enabled = 0
rc2 = self.intf.messageWindow(_("Warning - No Firewall"),
_("You have elected to disable the firewall on this system. This is not recomended if this system is attached directly to the Internet or is on a large public network. A firewall will help prevent unauthorized access to your system.\n\nAre you sure you want to turn off the firewall?"),
type="custom", custom_icon="warning",
custom_buttons=[_("_Back"), _("_Proceed")])
if rc2 == 0:
raise gui.StayOnScreen
else:
self.firewall.enabled = 1
count = 0
self.firewall.trustdevs = []
for device in self.devices:
val = self.trusted.get_active(count)
if val == 1:
self.firewall.trustdevs.append(device)
count = count + 1
count = 0
for service in self.knownPorts.keys():
val = self.incoming.get_active(count)
if service == "SSH":
self.firewall.ssh = val
elif service == "Telnet":
self.firewall.telnet = val
elif service == "WWW (HTTP)":
self.firewall.http = val
elif service == "Mail (SMTP)":
self.firewall.smtp = val
elif service == "FTP":
self.firewall.ftp = val
count = count + 1
portstring = string.strip(self.ports.get_text())
portlist = ""
bad_token_found = 0
bad_token = ""
if portstring != "":
tokens = string.split(portstring, ',')
for token in tokens:
try:
#- if there's a colon in the token, it's valid
if string.index(token,':'):
parts = string.split(token, ':')
try:
portnum = string.atoi(parts[0])
except:
portnum = None
if len(parts) > 2: # more than one colon
bad_token_found = 1
bad_token = token
elif portnum is not None and (portnum < 1 or portnum > 65535):
bad_token_found = 1
bad_token = token
else:
# udp and tcp are the only valid protos
if parts[1] == 'tcp' or parts[1] == 'udp':
if portlist == "":
portlist = token
else:
portlist = portlist + ',' + token
else: # found protocol !tcp && !udp
bad_token_found = 1
bad_token = token
pass
except:
if token != "":
try:
try:
portnum = string.atoi(token)
except:
portnum = None
if portnum is not None and (portnum < 1 or portnum > 65535):
bad_token_found = 1
bad_token = token
else:
if portlist == "":
portlist = token + ":tcp"
else:
portlist = portlist + ',' + token + ':tcp'
except:
bad_token_found = 1
bad_token = token
else:
pass
if bad_token_found == 1: # raise a warning
text = _("Invalid port given: %s. The proper format is "
"'port:protocol', where port is between 1 and 65535, and protocol is either 'tcp' or 'udp'.\n\nFor example, "
"'1234:udp'") % (bad_token,)
self.intf.messageWindow(_("Warning: Bad Token"),
text, type="warning")
raise gui.StayOnScreen
else: # all the port data looks good
self.firewall.portlist = portlist
def activate_firewall (self, widget):
if self.disabled_radio.get_active ():
self.table.set_sensitive(gtk.FALSE)
else:
self.table.set_sensitive(gtk.TRUE)
def getScreen (self, intf, network, firewall):
self.firewall = firewall
self.network = network
self.intf = intf
self.devices = self.network.available().keys()
self.devices.sort()
self.netCBs = {}
box = gtk.VBox (gtk.FALSE, 5)
box.set_border_width (5)
label = gui.WrappingLabel (_("A firewall can help prevent unauthorized access to your computer from the outside world. Would you like to enable a firewall?"))
label.set_alignment (0.0, 0)
label.set_size_request(450, -1)
# label.set_line_wrap (gtk.TRUE)
box.pack_start(label, gtk.FALSE)
hbox = gtk.VBox (gtk.FALSE)
self.disabled_radio = gtk.RadioButton (None, (_("N_o firewall")))
self.enabled_radio = gtk.RadioButton (self.disabled_radio,
(_("_Enable firewall")))
self.custom_radio = gtk.RadioButton (self.disabled_radio,
(_("_Custom firewall")))
self.disabled_radio.connect("clicked", self.activate_firewall)
self.custom_radio.connect("clicked", self.activate_firewall)
self.enabled_radio.connect("clicked", self.activate_firewall)
hbox.pack_start (self.disabled_radio)
hbox.pack_start (self.enabled_radio)
# hbox.pack_start (self.custom_radio)
a = gtk.Alignment ()
a.add (hbox)
a.set (0.3, 0, 0.7, 1.0)
box.pack_start (a, gtk.FALSE, 5)
self.table = gtk.Table (2, 8)
box.pack_start (self.table, gtk.FALSE, 5)
y = 0
label = gtk.Label (_("What services should be allowed to pass through "
"the firewall?"))
label.set_size_request(450, -1)
label.set_alignment(0.0, 0.0)
self.table.attach(label, 0, 2, y, y + 1, gtk.EXPAND | gtk.FILL, gtk.FILL, 5, 5)
y = y + 1
hbox = gtk.HBox(gtk.FALSE, 10)
self.label2 = gui.MnemonicLabel (_("_Allow incoming:"))
self.label2.set_alignment (0.2, 0.0)
self.incoming = checklist.CheckList(1)
self.incoming.set_size_request(-1, 125)
self.label2.set_mnemonic_widget(self.incoming)
incomingSW = gtk.ScrolledWindow()
incomingSW.set_border_width(5)
incomingSW.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
incomingSW.set_shadow_type(gtk.SHADOW_IN)
incomingSW.add(self.incoming)
# self.table.attach (self.label2, 0, 1, y, y + 1, gtk.FILL, gtk.FILL, 5, 5)
self.table.attach (incomingSW, 0, 2, y, y + 1, gtk.EXPAND|gtk.FILL, gtk.FILL, 5, 5)
self.knownPorts = {"SSH": self.firewall.ssh,
"Telnet": self.firewall.telnet,
"WWW (HTTP)": self.firewall.http,
"Mail (SMTP)": self.firewall.smtp,
"FTP": self.firewall.ftp}
for item in self.knownPorts.keys():
self.incoming.append_row ((item, ""), self.knownPorts[item])
y = y + 1
self.label3 = gui.MnemonicLabel (_("Other _ports:"))
self.ports = gtk.Entry ()
self.label3.set_mnemonic_widget(self.ports)
self.table.attach (self.label3, 0, 1, y, y + 1, gtk.FILL, gtk.FILL, 5, 5)
self.table.attach (self.ports, 1, 2, y, y + 1, gtk.EXPAND|gtk.FILL, gtk.FILL, 10, 5)
y = y + 1
label = gui.WrappingLabel (_("If you would like to allow all traffic "
"from a device, select it below."))
label.set_size_request(450, -1)
label.set_alignment(0, 1)
self.table.attach(label, 0, 2, y, y + 1,
gtk.FILL, gtk.FILL, 5, 5)
y = y + 1
hbox = gtk.HBox(gtk.FALSE, 10)
self.label1 = gui.MnemonicLabel (_("_Trusted devices:"))
self.label1.set_alignment (0.2, 0.0)
self.trusted = checklist.CheckList(1)
self.trusted.set_size_request(-1, 40)
self.label1.set_mnemonic_widget(self.trusted)
trustedSW = gtk.ScrolledWindow()
trustedSW.set_border_width(5)
trustedSW.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
trustedSW.set_shadow_type(gtk.SHADOW_IN)
trustedSW.add(self.trusted)
if self.devices != []:
# self.table.attach (self.label1, 0, 1, y, y + 1, gtk.FILL, gtk.FILL, 5, 5)
self.table.attach (trustedSW, 0, 2, y, y + 1, gtk.EXPAND|gtk.FILL, gtk.FILL, 5, 0)
for device in self.devices:
if device in self.firewall.trustdevs:
self.trusted.append_row ((device, device), gtk.TRUE)
else:
self.trusted.append_row ((device, device), gtk.FALSE)
y = y + 1
if self.firewall.enabled == 0:
self.disabled_radio.set_active (gtk.TRUE)
else:
self.enabled_radio.set_active(gtk.TRUE)
if self.firewall.portlist != "":
self.ports.set_text (self.firewall.portlist)
self.activate_firewall(None)
return box
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