1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
#
# firewall_text.py: text mode firewall setup
#
# Bill Nottingham <notting@redhat.com>
#
# 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.
#
from snack import *
from constants_text import *
from rhpl.translate import _
class FirewallWindow:
def __call__(self, screen, intf, network, firewall):
self.intf = intf
bb = ButtonBar (screen, (TEXT_OK_BUTTON, (_("Customize"), "customize"), TEXT_BACK_BUTTON))
toplevel = GridFormHelp (screen, _("Firewall"),
"securitylevel", 1, 5)
text = _("A firewall can help prevent unauthorized access to your "
"computer from the outside world. Would you like to enable "
"a firewall?")
toplevel.add (TextboxReflowed(50, text), 0, 0, (0, 0, 0, 1))
toplevel.add (bb, 0, 4, (0, 0, 0, 0), growx = 1)
smallGrid = Grid(2,1)
bigGrid = Grid(2,15)
typeGrid = Grid(2,1)
# label = Label(_("Security Level:"))
# smallGrid.setField (label, 0, 0, (0, 0, 0, 1), anchorLeft = 1)
self.enabled = SingleRadioButton(_("Enable firewall"), None, firewall.enabled)
self.enabled.setCallback(self.radiocb, (firewall, self.enabled))
typeGrid.setField (self.enabled, 0, 0, (0, 0, 1, 0), anchorLeft = 1)
self.disabled = SingleRadioButton(_("No firewall"), self.enabled, not firewall.enabled)
self.disabled.setCallback(self.radiocb, (firewall, self.disabled))
typeGrid.setField (self.disabled, 1, 0 , (0, 0, 1, 0), anchorRight = 1)
smallGrid.setField (typeGrid, 0, 0, (1, 0, 0, 1), anchorLeft = 1, growx = 1)
currentRow = 1
devices = network.available().keys()
if (devices):
devices.sort()
cols = len(devices)
if cols > 4:
rows = cols % 4
cols = 4
else:
rows = 1
if devices != []:
bigGrid.setField (Label(_("Trusted Devices:")), 0,
currentRow, (0, 0, 0, 1), anchorLeft = 1)
devicelist = CheckboxTree(height=3, scroll=1)
bigGrid.setField (devicelist, 1, currentRow,
(1, 0, 0, 1), anchorLeft = 1)
currentRow = currentRow + 1
for dev in devices:
devicelist.append(dev, selected = (dev in firewall.trustdevs))
bigGrid.setField (Label(_("Allow incoming:")), 0, currentRow, (0, 0, 0, 0),
anchorTop = 1)
self.portGrid = Grid(3,2)
self.ssh = Checkbox (_("SSH"), firewall.ssh)
self.portGrid.setField (self.ssh, 1, 0, (0, 0, 1, 0), anchorLeft = 1)
self.telnet = Checkbox (_("Telnet"), firewall.telnet)
self.portGrid.setField (self.telnet, 2, 0, (0, 0, 1, 0), anchorLeft = 1)
self.http = Checkbox (_("WWW (HTTP)"), firewall.http)
self.portGrid.setField (self.http, 0, 1, (0, 0, 1, 0), anchorLeft = 1)
self.smtp = Checkbox (_("Mail (SMTP)"), firewall.smtp)
self.portGrid.setField (self.smtp, 1, 1, (0, 0, 1, 0), anchorLeft = 1)
self.ftp = Checkbox (_("FTP"), firewall.ftp)
self.portGrid.setField (self.ftp, 2, 1, (0, 0, 1, 0), anchorLeft = 1)
oGrid = Grid(2,1)
oGrid.setField (Label(_("Other ports")), 0, 0, (0, 0, 1, 0), anchorLeft = 1)
self.other = Entry (25, firewall.portlist)
oGrid.setField (self.other, 1, 0, (0, 0, 1, 0), anchorLeft = 1, growx = 1)
bigGrid.setField (self.portGrid, 1, currentRow, (1, 0, 0, 0), anchorLeft = 1)
bigGrid.setField (Label(""), 0, currentRow + 1, (0, 0, 0, 1), anchorLeft = 1)
bigGrid.setField (oGrid, 1, currentRow + 1, (1, 0, 0, 1), anchorLeft = 1)
self.portboxes = ( self.ssh, self.telnet, self.http, self.smtp, self.ftp,
self.other )
toplevel.add(smallGrid, 0, 1, (0, 0, 0, 0), anchorLeft = 1)
if self.disabled.selected():
self.radiocb((firewall, self.disabled))
while 1:
result = toplevel.run ()
rc = bb.buttonPressed (result)
if rc == TEXT_BACK_CHECK:
screen.popWindow()
return INSTALL_BACK
if rc == "customize":
if self.disabled.selected():
ButtonChoiceWindow(screen, _("Invalid Choice"),
_("You cannot customize a disabled firewall."),
buttons = [ TEXT_OK_STR ], width = 40)
else:
popbb = ButtonBar (screen, (TEXT_OK_BUTTON,))
poplevel = GridFormHelp (screen, _("Firewall Configuration - Customize"),
"securitycustom", 1, 5)
text = _("You can customize your firewall in two ways. "
"First, you can select to allow all traffic from "
"certain network interfaces. Second, you can allow "
"certain protocols explicitly through the firewall. "
"In a comma separated list, specify additional ports in the form "
"'service:protocol' such as 'imap:tcp'. ")
poplevel.add (TextboxReflowed(65, text), 0, 0, (0, 0, 0, 1))
poplevel.add (popbb, 0, 4, (0, 0, 0, 0), growx = 1)
poplevel.add (bigGrid, 0, 1, (0, 0, 0, 0), anchorLeft = 1)
result2 = poplevel.run()
# screen.popWindow()
rc2 = popbb.buttonPressed(result2)
# rc2 = ""
if rc2 == TEXT_OK_CHECK or result2 == TEXT_F12_CHECK:
#- Do some sanity checking on port list
portstring = string.strip(self.other.value())
portlist = ""
bad_token_found = 0
bad_token = ""
if portstring != "":
tokens = string.split(portstring, ',')
for token in tokens:
try:
if string.index(token,':'): #- if there's a colon in the token, it's valid
parts = string.split(token, ':')
if len(parts) > 2: #- We've found more than one colon. Break loop and raise an error.
bad_token_found = 1
bad_token = token
else:
if parts[1] == 'tcp' or parts[1] == 'udp': #-upd and tcp are the only valid protocols
if portlist == "":
portlist = token
else:
portlist = portlist + ',' + token
else: #- Found a protocol other than tcp or udp. Break loop
bad_token_found = 1
bad_token = token
pass
except:
if token != "":
if portlist == "":
portlist = token + ":tcp"
else:
portlist = portlist + ',' + token + ':tcp'
else:
pass
if bad_token_found == 1:
self.intf.messageWindow(_("Invalid Choice"),
_("Warning: %s is not a "
"valid port.") %(token,))
screen.popWindow()
else:
firewall.portlist = portlist
screen.popWindow()
if rc == TEXT_OK_CHECK or result == TEXT_F12_CHECK:
if self.disabled.selected():
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=[_("_Back"), _("_Proceed")])
if rc2 == 0:
continue
else:
break
screen.popWindow()
firewall.trustdevs = []
if devices != []:
for dev in devicelist.getSelection():
firewall.trustdevs.append(dev)
# firewall.portlist = self.other.value()
firewall.ssh = self.ssh.selected()
firewall.telnet = self.telnet.selected()
firewall.http = self.http.selected()
firewall.smtp = self.smtp.selected()
firewall.ftp = self.ftp.selected()
if self.disabled.selected():
firewall.enabled = 0
else:
firewall.enabled = 1
return INSTALL_OK
def radiocb(self, args):
(firewall, widget) = args
if widget == self.disabled:
firewall.enabled = 0
elif widget == self.enabled:
firewall.enabled = 1
else:
raise RuntimeError, "never reached"
|
