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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_
from flags import flags
from constants import *
class FirewallWindow (InstallWindow):
windowTitle = N_("Firewall")
htmlTag = "securitylevel"
def __init__ (self, ics):
InstallWindow.__init__ (self, ics)
def getNext (self):
self.security.setSELinux(self.se_option_menu.get_history())
if self.disabled_radio.get_active ():
rc2 = self.intf.messageWindow(_("Warning - No Firewall"),
_("If this system is attached directly to the Internet or "
"is on a large public network, it is recommended that a "
"firewall be configured to help prevent unauthorized "
"access. However, you have selected not to "
"configure a firewall. Choose \"Proceed\" to continue "
"without a firewall."),
type="custom", custom_icon="warning",
custom_buttons=[_("_Configure Firewall"), _("_Proceed")])
if rc2 == 0:
raise gui.StayOnScreen
self.firewall.enabled = 0
else:
self.firewall.enabled = 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, security):
self.firewall = firewall
self.security = security
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)
box.pack_start(label, gtk.FALSE)
vbox = gtk.VBox (gtk.FALSE)
self.disabled_radio = gtk.RadioButton (None, (_("N_o firewall")))
self.enabled_radio = gtk.RadioButton (self.disabled_radio,
(_("_Enable firewall")))
self.disabled_radio.connect("clicked", self.activate_firewall)
self.enabled_radio.connect("clicked", self.activate_firewall)
vbox.pack_start (self.disabled_radio)
vbox.pack_start (self.enabled_radio)
a = gtk.Alignment ()
a.add (vbox)
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 (_("Allow others on the internet to access "
"these services."))
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,
N_("Remote Login (SSH)")),
"WWW (HTTP)": (self.firewall.http,
N_("Web Server")),
"Mail (SMTP)": (self.firewall.smtp,
N_("Mail Server (SMTP)")),
"FTP": (self.firewall.ftp,
N_("File Transfer (FTP)"))}
for (key, (val, disp)) in self.knownPorts.items():
self.incoming.append_row ((disp, key), val)
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
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)
box.pack_start (gtk.HSeparator(), gtk.FALSE)
label = gtk.Label(_("_Security Enhanced Linux (SELinux) Extensions:"))
label.set_use_underline(gtk.TRUE)
self.se_option_menu = gtk.OptionMenu()
label.set_mnemonic_widget(self.se_option_menu)
se_menu = gtk.Menu()
for i in (_("Disabled"), _("Warn"), _("Active")):
se_menu.add(gtk.MenuItem(i))
self.se_option_menu.set_menu(se_menu)
self.se_option_menu.set_history(self.security.getSELinux())
hbox = gtk.HBox()
hbox.set_spacing(8)
hbox.pack_start(label, gtk.FALSE)
hbox.pack_start(self.se_option_menu, gtk.TRUE)
if flags.selinux == 0:
hbox.set_sensitive(gtk.FALSE)
if (SELINUX_DEFAULT == 1) or flags.selinux:
box.pack_start(hbox, gtk.FALSE)
return box
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