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mandos-monitor
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#!/usr/bin/python
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# -*- mode: python; coding: utf-8 -*-
 
3
# 
 
4
# Mandos Monitor - Control and monitor the Mandos server
 
5
# 
 
6
# Copyright © 2009,2010 Teddy Hogeborn
 
7
# Copyright © 2009,2010 Björn Påhlsson
 
8
# 
 
9
# This program is free software: you can redistribute it and/or modify
 
10
# it under the terms of the GNU General Public License as published by
 
11
# the Free Software Foundation, either version 3 of the License, or
 
12
# (at your option) any later version.
 
13
#
 
14
#     This program is distributed in the hope that it will be useful,
 
15
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
16
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
17
#     GNU General Public License for more details.
 
18
# 
 
19
# You should have received a copy of the GNU General Public License
 
20
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
21
# 
 
22
# Contact the authors at <mandos@fukt.bsnet.se>.
 
23
# 
3
24
 
4
25
from __future__ import division, absolute_import, with_statement
5
26
 
30
51
domain = 'se.bsnet.fukt'
31
52
server_interface = domain + '.Mandos'
32
53
client_interface = domain + '.Mandos.Client'
33
 
version = "1.0.15"
 
54
version = "1.2"
34
55
 
35
56
# Always run in monochrome mode
36
57
urwid.curses_display.curses.has_colors = lambda : False
40
61
urwid.curses_display.curses.A_UNDERLINE |= (
41
62
    urwid.curses_display.curses.A_BLINK)
42
63
 
 
64
def isoformat_to_datetime(iso):
 
65
    "Parse an ISO 8601 date string to a datetime.datetime()"
 
66
    if not iso:
 
67
        return None
 
68
    d, t = iso.split(u"T", 1)
 
69
    year, month, day = d.split(u"-", 2)
 
70
    hour, minute, second = t.split(u":", 2)
 
71
    second, fraction = divmod(float(second), 1)
 
72
    return datetime.datetime(int(year),
 
73
                             int(month),
 
74
                             int(day),
 
75
                             int(hour),
 
76
                             int(minute),
 
77
                             int(second),           # Whole seconds
 
78
                             int(fraction*1000000)) # Microseconds
 
79
 
43
80
class MandosClientPropertyCache(object):
44
81
    """This wraps a Mandos Client D-Bus proxy object, caches the
45
82
    properties and calls a hook function when any of them are
85
122
        # Logger
86
123
        self.logger = logger
87
124
        
 
125
        self._update_timer_callback_tag = None
 
126
        self._update_timer_callback_lock = 0
 
127
        self.last_checker_failed = False
 
128
        
88
129
        # The widget shown normally
89
130
        self._text_widget = urwid.Text(u"")
90
131
        # The widget shown when we have focus
94
135
            *args, **kwargs)
95
136
        self.update()
96
137
        self.opened = False
 
138
        
 
139
        last_checked_ok = isoformat_to_datetime(self.properties
 
140
                                                [u"LastCheckedOK"])
 
141
        if last_checked_ok is None:
 
142
            self.last_checker_failed = True
 
143
        else:
 
144
            self.last_checker_failed = ((datetime.datetime.utcnow()
 
145
                                         - last_checked_ok)
 
146
                                        > datetime.timedelta
 
147
                                        (milliseconds=
 
148
                                         self.properties
 
149
                                         [u"Interval"]))
 
150
        
 
151
        if self.last_checker_failed:
 
152
            self.using_timer(True)
 
153
        
 
154
        if self.need_approval:
 
155
            self.using_timer(True)
 
156
        
97
157
        self.proxy.connect_to_signal(u"CheckerCompleted",
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                                     self.checker_completed,
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                                     client_interface,
115
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                                     client_interface,
116
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                                     byte_arrays=True)
117
177
    
 
178
    def property_changed(self, property=None, value=None):
 
179
        super(self, MandosClientWidget).property_changed(property,
 
180
                                                         value)
 
181
        if property == u"ApprovalPending":
 
182
            using_timer(bool(value))
 
183
        
 
184
    def using_timer(self, flag):
 
185
        """Call this method with True or False when timer should be
 
186
        activated or deactivated.
 
187
        """
 
188
        old = self._update_timer_callback_lock
 
189
        if flag:
 
190
            self._update_timer_callback_lock += 1
 
191
        else:
 
192
            self._update_timer_callback_lock -= 1
 
193
        if old == 0 and self._update_timer_callback_lock:
 
194
            self._update_timer_callback_tag = (gobject.timeout_add
 
195
                                               (1000,
 
196
                                                self.update_timer))
 
197
        elif old and self._update_timer_callback_lock == 0:
 
198
            gobject.source_remove(self._update_timer_callback_tag)
 
199
            self._update_timer_callback_tag = None
 
200
    
118
201
    def checker_completed(self, exitstatus, condition, command):
119
202
        if exitstatus == 0:
 
203
            if self.last_checker_failed:
 
204
                self.last_checker_failed = False
 
205
                self.using_timer(False)
120
206
            #self.logger(u'Checker for client %s (command "%s")'
121
207
            #            u' was successful'
122
 
            #            % (self.properties[u"name"], command))
 
208
            #            % (self.properties[u"Name"], command))
 
209
            self.update()
123
210
            return
 
211
        # Checker failed
 
212
        if not self.last_checker_failed:
 
213
            self.last_checker_failed = True
 
214
            self.using_timer(True)
124
215
        if os.WIFEXITED(condition):
125
216
            self.logger(u'Checker for client %s (command "%s")'
126
217
                        u' failed with exit code %s'
127
 
                        % (self.properties[u"name"], command,
 
218
                        % (self.properties[u"Name"], command,
128
219
                           os.WEXITSTATUS(condition)))
129
 
            return
130
 
        if os.WIFSIGNALED(condition):
 
220
        elif os.WIFSIGNALED(condition):
131
221
            self.logger(u'Checker for client %s (command "%s")'
132
222
                        u' was killed by signal %s'
133
 
                        % (self.properties[u"name"], command,
 
223
                        % (self.properties[u"Name"], command,
134
224
                           os.WTERMSIG(condition)))
135
 
            return
136
 
        if os.WCOREDUMP(condition):
 
225
        elif os.WCOREDUMP(condition):
137
226
            self.logger(u'Checker for client %s (command "%s")'
138
227
                        u' dumped core'
139
 
                        % (self.properties[u"name"], command))
140
 
        self.logger(u'Checker for client %s completed mysteriously')
 
228
                        % (self.properties[u"Name"], command))
 
229
        else:
 
230
            self.logger(u'Checker for client %s completed'
 
231
                        u' mysteriously')
 
232
        self.update()
141
233
    
142
234
    def checker_started(self, command):
143
235
        #self.logger(u'Client %s started checker "%s"'
144
 
        #            % (self.properties[u"name"], unicode(command)))
 
236
        #            % (self.properties[u"Name"], unicode(command)))
145
237
        pass
146
238
    
147
239
    def got_secret(self):
 
240
        self.last_checker_failed = False
148
241
        self.logger(u'Client %s received its secret'
149
 
                    % self.properties[u"name"])
 
242
                    % self.properties[u"Name"])
150
243
    
151
244
    def need_approval(self, timeout, default):
152
245
        if not default:
154
247
        else:
155
248
            message = u'Client %s will get its secret in %s seconds'
156
249
        self.logger(message
157
 
                    % (self.properties[u"name"], timeout/1000))
 
250
                    % (self.properties[u"Name"], timeout/1000))
 
251
        self.using_timer(True)
158
252
    
159
253
    def rejected(self, reason):
160
254
        self.logger(u'Client %s was rejected; reason: %s'
161
 
                    % (self.properties[u"name"], reason))
 
255
                    % (self.properties[u"Name"], reason))
162
256
    
163
257
    def selectable(self):
164
258
        """Make this a "selectable" widget.
190
284
        # Rebuild focus and non-focus widgets using current properties
191
285
 
192
286
        # Base part of a client. Name!
193
 
        self._text = (u'%(name)s: '
194
 
                      % {u"name": self.properties[u"name"]})
195
 
 
196
 
        if self.properties[u"approved_pending"]:
197
 
            if self.properties[u"approved_by_default"]:
198
 
                self._text += u"Connection established to client. (d)eny?"
199
 
            else:
200
 
                self._text += u"Seeks approval to send secret. (a)pprove?"
 
287
        base = (u'%(name)s: '
 
288
                      % {u"name": self.properties[u"Name"]})
 
289
        if not self.properties[u"Enabled"]:
 
290
            message = u"DISABLED"
 
291
        elif self.properties[u"ApprovalPending"]:
 
292
            timeout = datetime.timedelta(milliseconds
 
293
                                         = self.properties
 
294
                                         [u"ApprovalDelay"])
 
295
            last_approval_request = isoformat_to_datetime(
 
296
                self.properties[u"LastApprovalRequest"])
 
297
            if last_approval_request is not None:
 
298
                timer = timeout - (datetime.datetime.utcnow()
 
299
                                   - last_approval_request)
 
300
            else:
 
301
                timer = datetime.timedelta()
 
302
            if self.properties[u"ApprovedByDefault"]:
 
303
                message = u"Approval in %s. (d)eny?"
 
304
            else:
 
305
                message = u"Denial in %s. (a)pprove?"
 
306
            message = message % unicode(timer).rsplit(".", 1)[0]
 
307
        elif self.last_checker_failed:
 
308
            timeout = datetime.timedelta(milliseconds
 
309
                                         = self.properties
 
310
                                         [u"Timeout"])
 
311
            last_ok = isoformat_to_datetime(
 
312
                max((self.properties[u"LastCheckedOK"]
 
313
                     or self.properties[u"Created"]),
 
314
                    self.properties[u"LastEnabled"]))
 
315
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
 
316
            message = (u'A checker has failed! Time until client'
 
317
                       u' gets disabled: %s'
 
318
                           % unicode(timer).rsplit(".", 1)[0])
201
319
        else:
202
 
            self._text += (u'%(enabled)s'
203
 
                           % {u"enabled":
204
 
                               (u"enabled"
205
 
                                if self.properties[u"enabled"]
206
 
                                else u"DISABLED")})
 
320
            message = u"enabled"
 
321
        self._text = "%s%s" % (base, message)
 
322
            
207
323
        if not urwid.supports_unicode():
208
324
            self._text = self._text.encode("ascii", "replace")
209
325
        textlist = [(u"normal", self._text)]
220
336
        if self.update_hook is not None:
221
337
            self.update_hook()
222
338
    
 
339
    def update_timer(self):
 
340
        "called by gobject"
 
341
        self.update()
 
342
        return True             # Keep calling this
 
343
    
223
344
    def delete(self):
 
345
        if self._update_timer_callback_tag is not None:
 
346
            gobject.source_remove(self._update_timer_callback_tag)
 
347
            self._update_timer_callback_tag = None
224
348
        if self.delete_hook is not None:
225
349
            self.delete_hook(self)
226
350
    
243
367
        elif key == u"d":
244
368
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
245
369
                                  dbus_interface = client_interface)
246
 
        elif key == u"r" or key == u"_" or key == u"ctrl k":
 
370
        elif key == u"R" or key == u"_" or key == u"ctrl k":
247
371
            self.server_proxy_object.RemoveClient(self.proxy
248
372
                                                  .object_path)
249
373
        elif key == u"s":
259
383
#             self.proxy.unpause()
260
384
#         elif key == u"RET":
261
385
#             self.open()
262
 
#        elif key == u"+":
263
 
#            self.proxy.Approve(True)
264
 
#        elif key == u"-":
265
 
#            self.proxy.Approve(False)
266
386
        else:
267
387
            return key
268
388
    
284
404
    use them as an excuse to shift focus away from this widget.
285
405
    """
286
406
    def keypress(self, (maxcol, maxrow), key):
287
 
        ret = super(ConstrainedListBox, self).keypress((maxcol, maxrow), key)
 
407
        ret = super(ConstrainedListBox, self).keypress((maxcol,
 
408
                                                        maxrow), key)
288
409
        if ret in (u"up", u"down"):
289
410
            return
290
411
        return ret
407
528
        Call this when the widget layout needs to change"""
408
529
        self.uilist = []
409
530
        #self.uilist.append(urwid.ListBox(self.clients))
410
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
 
531
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
532
                                                          clients),
411
533
                                       #header=urwid.Divider(),
412
534
                                       header=None,
413
 
                                       footer=urwid.Divider(div_char=self.divider)))
 
535
                                       footer=
 
536
                                       urwid.Divider(div_char=
 
537
                                                     self.divider)))
414
538
        if self.log_visible:
415
539
            self.uilist.append(self.logbox)
416
540
            pass
434
558
        """Toggle visibility of the log buffer."""
435
559
        self.log_visible = not self.log_visible
436
560
        self.rebuild()
437
 
        self.log_message(u"Log visibility changed to: "
438
 
                         + unicode(self.log_visible))
 
561
        #self.log_message(u"Log visibility changed to: "
 
562
        #                 + unicode(self.log_visible))
439
563
    
440
564
    def change_log_display(self):
441
565
        """Change type of log display.
446
570
            self.log_wrap = u"clip"
447
571
        for textwidget in self.log:
448
572
            textwidget.set_wrap_mode(self.log_wrap)
449
 
        self.log_message(u"Wrap mode: " + self.log_wrap)
 
573
        #self.log_message(u"Wrap mode: " + self.log_wrap)
450
574
    
451
575
    def find_and_remove_client(self, path, name):
452
576
        """Find an client from its object path and remove it.
479
603
        if path is None:
480
604
            path = client.proxy.object_path
481
605
        self.clients_dict[path] = client
482
 
        self.clients.sort(None, lambda c: c.properties[u"name"])
 
606
        self.clients.sort(None, lambda c: c.properties[u"Name"])
483
607
        self.refresh()
484
608
    
485
609
    def remove_client(self, client, path=None):
560
684
                self.log_message_raw((u"bold",
561
685
                                      u"  "
562
686
                                      .join((u"Clients:",
563
 
                                             u"e: Enable",
564
 
                                             u"d: Disable",
565
 
                                             u"r: Remove",
 
687
                                             u"+: Enable",
 
688
                                             u"-: Disable",
 
689
                                             u"R: Remove",
566
690
                                             u"s: Start new checker",
567
691
                                             u"S: Stop checker",
568
692
                                             u"C: Checker OK",
569
 
                                             u"A: Approve",
570
 
                                             u"D: Deny"))))
 
693
                                             u"a: Approve",
 
694
                                             u"d: Deny"))))
571
695
                self.refresh()
572
696
            elif key == u"tab":
573
697
                if self.topwidget.get_focus() is self.logbox:
601
725
ui = UserInterface()
602
726
try:
603
727
    ui.run()
 
728
except KeyboardInterrupt:
 
729
    ui.screen.stop()
604
730
except Exception, e:
605
731
    ui.log_message(unicode(e))
606
732
    ui.screen.stop()