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mandos-monitor
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# 
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# Mandos Monitor - Control and monitor the Mandos server
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# 
6
 
# Copyright © 2009-2011 Teddy Hogeborn
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# Copyright © 2009-2011 Björn Påhlsson
 
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# Copyright © 2009-2012 Teddy Hogeborn
 
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# Copyright © 2009-2012 Björn Påhlsson
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# 
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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#     GNU General Public License for more details.
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# 
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# 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/>.
 
20
# along with this program.  If not, see
 
21
# <http://www.gnu.org/licenses/>.
21
22
# 
22
 
# Contact the authors at <mandos@fukt.bsnet.se>.
 
23
# Contact the authors at <mandos@recompile.se>.
23
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# 
24
25
 
25
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from __future__ import (division, absolute_import, print_function,
26
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                        unicode_literals)
27
28
 
 
29
from future_builtins import *
 
30
 
28
31
import sys
29
32
import os
30
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import signal
52
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domain = 'se.recompile'
53
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server_interface = domain + '.Mandos'
54
57
client_interface = domain + '.Mandos.Client'
55
 
version = "1.3.1"
 
58
version = "1.5.3"
56
59
 
57
60
# Always run in monochrome mode
58
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urwid.curses_display.curses.has_colors = lambda : False
83
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    properties and calls a hook function when any of them are
84
87
    changed.
85
88
    """
86
 
    def __init__(self, proxy_object=None, *args, **kwargs):
 
89
    def __init__(self, proxy_object=None, properties=None, **kwargs):
87
90
        self.proxy = proxy_object # Mandos Client proxy object
88
 
        
89
 
        self.properties = dict()
 
91
        self.properties = dict() if properties is None else properties
90
92
        self.property_changed_match = (
91
93
            self.proxy.connect_to_signal("PropertyChanged",
92
 
                                         self.property_changed,
 
94
                                         self._property_changed,
93
95
                                         client_interface,
94
96
                                         byte_arrays=True))
95
97
        
96
 
        self.properties.update(
97
 
            self.proxy.GetAll(client_interface,
98
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
99
 
 
100
 
        #XXX This breaks good super behaviour
101
 
#        super(MandosClientPropertyCache, self).__init__(
102
 
#            *args, **kwargs)
 
98
        if properties is None:
 
99
            self.properties.update(
 
100
                self.proxy.GetAll(client_interface,
 
101
                                  dbus_interface
 
102
                                  = dbus.PROPERTIES_IFACE))
 
103
        
 
104
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
105
    
 
106
    def _property_changed(self, property, value):
 
107
        """Helper which takes positional arguments"""
 
108
        return self.property_changed(property=property, value=value)
103
109
    
104
110
    def property_changed(self, property=None, value=None):
105
111
        """This is called whenever we get a PropertyChanged signal
108
114
        # Update properties dict with new value
109
115
        self.properties[property] = value
110
116
    
111
 
    def delete(self, *args, **kwargs):
 
117
    def delete(self):
112
118
        self.property_changed_match.remove()
113
 
        super(MandosClientPropertyCache, self).__init__(
114
 
            *args, **kwargs)
115
119
 
116
120
 
117
121
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
119
123
    """
120
124
    
121
125
    def __init__(self, server_proxy_object=None, update_hook=None,
122
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
126
                 delete_hook=None, logger=None, **kwargs):
123
127
        # Called on update
124
128
        self.update_hook = update_hook
125
129
        # Called on delete
130
134
        self.logger = logger
131
135
        
132
136
        self._update_timer_callback_tag = None
133
 
        self._update_timer_callback_lock = 0
134
 
        self.last_checker_failed = False
135
137
        
136
138
        # The widget shown normally
137
139
        self._text_widget = urwid.Text("")
138
140
        # The widget shown when we have focus
139
141
        self._focus_text_widget = urwid.Text("")
140
 
        super(MandosClientWidget, self).__init__(
141
 
            update_hook=update_hook, delete_hook=delete_hook,
142
 
            *args, **kwargs)
 
142
        super(MandosClientWidget, self).__init__(**kwargs)
143
143
        self.update()
144
144
        self.opened = False
145
145
        
146
 
        last_checked_ok = isoformat_to_datetime(self.properties
147
 
                                                ["LastCheckedOK"])
148
 
        if last_checked_ok is None:
149
 
            self.last_checker_failed = True
150
 
        else:
151
 
            self.last_checker_failed = ((datetime.datetime.utcnow()
152
 
                                         - last_checked_ok)
153
 
                                        > datetime.timedelta
154
 
                                        (milliseconds=
155
 
                                         self.properties
156
 
                                         ["Interval"]))
157
 
        
158
 
        if self.last_checker_failed:
159
 
            self.using_timer(True)
160
 
        
161
 
        if self.need_approval:
162
 
            self.using_timer(True)
163
 
        
164
146
        self.match_objects = (
165
147
            self.proxy.connect_to_signal("CheckerCompleted",
166
148
                                         self.checker_completed,
182
164
                                         self.rejected,
183
165
                                         client_interface,
184
166
                                         byte_arrays=True))
185
 
        #self.logger('Created client %s' % (self.properties["Name"]))
 
167
        #self.logger('Created client {0}'
 
168
        #            .format(self.properties["Name"]))
186
169
    
187
 
    def property_changed(self, property=None, value=None):
188
 
        super(self, MandosClientWidget).property_changed(property,
189
 
                                                         value)
190
 
        if property == "ApprovalPending":
191
 
            using_timer(bool(value))
192
 
        
193
170
    def using_timer(self, flag):
194
171
        """Call this method with True or False when timer should be
195
172
        activated or deactivated.
196
173
        """
197
 
        old = self._update_timer_callback_lock
198
 
        if flag:
199
 
            self._update_timer_callback_lock += 1
200
 
        else:
201
 
            self._update_timer_callback_lock -= 1
202
 
        if old == 0 and self._update_timer_callback_lock:
 
174
        if flag and self._update_timer_callback_tag is None:
203
175
            # Will update the shown timer value every second
204
176
            self._update_timer_callback_tag = (gobject.timeout_add
205
177
                                               (1000,
206
178
                                                self.update_timer))
207
 
        elif old and self._update_timer_callback_lock == 0:
 
179
        elif not (flag or self._update_timer_callback_tag is None):
208
180
            gobject.source_remove(self._update_timer_callback_tag)
209
181
            self._update_timer_callback_tag = None
210
182
    
211
183
    def checker_completed(self, exitstatus, condition, command):
212
184
        if exitstatus == 0:
213
 
            if self.last_checker_failed:
214
 
                self.last_checker_failed = False
215
 
                self.using_timer(False)
216
 
            #self.logger('Checker for client %s (command "%s")'
217
 
            #            ' was successful'
218
 
            #            % (self.properties["Name"], command))
219
185
            self.update()
220
186
            return
221
187
        # Checker failed
222
 
        if not self.last_checker_failed:
223
 
            self.last_checker_failed = True
224
 
            self.using_timer(True)
225
188
        if os.WIFEXITED(condition):
226
 
            self.logger('Checker for client %s (command "%s")'
227
 
                        ' failed with exit code %s'
228
 
                        % (self.properties["Name"], command,
229
 
                           os.WEXITSTATUS(condition)))
 
189
            self.logger('Checker for client {0} (command "{1}")'
 
190
                        ' failed with exit code {2}'
 
191
                        .format(self.properties["Name"], command,
 
192
                                os.WEXITSTATUS(condition)))
230
193
        elif os.WIFSIGNALED(condition):
231
 
            self.logger('Checker for client %s (command "%s")'
232
 
                        ' was killed by signal %s'
233
 
                        % (self.properties["Name"], command,
234
 
                           os.WTERMSIG(condition)))
 
194
            self.logger('Checker for client {0} (command "{1}") was'
 
195
                        ' killed by signal {2}'
 
196
                        .format(self.properties["Name"], command,
 
197
                                os.WTERMSIG(condition)))
235
198
        elif os.WCOREDUMP(condition):
236
 
            self.logger('Checker for client %s (command "%s")'
 
199
            self.logger('Checker for client {0} (command "{1}")'
237
200
                        ' dumped core'
238
 
                        % (self.properties["Name"], command))
 
201
                        .format(self.properties["Name"], command))
239
202
        else:
240
 
            self.logger('Checker for client %s completed'
241
 
                        ' mysteriously')
 
203
            self.logger('Checker for client {0} completed'
 
204
                        ' mysteriously'
 
205
                        .format(self.properties["Name"]))
242
206
        self.update()
243
207
    
244
208
    def checker_started(self, command):
245
 
        #self.logger('Client %s started checker "%s"'
246
 
        #            % (self.properties["Name"], unicode(command)))
 
209
        """Server signals that a checker started. This could be useful
 
210
           to log in the future. """
 
211
        #self.logger('Client {0} started checker "{1}"'
 
212
        #            .format(self.properties["Name"],
 
213
        #                    unicode(command)))
247
214
        pass
248
215
    
249
216
    def got_secret(self):
250
 
        self.last_checker_failed = False
251
 
        self.logger('Client %s received its secret'
252
 
                    % self.properties["Name"])
 
217
        self.logger('Client {0} received its secret'
 
218
                    .format(self.properties["Name"]))
253
219
    
254
220
    def need_approval(self, timeout, default):
255
221
        if not default:
256
 
            message = 'Client %s needs approval within %s seconds'
 
222
            message = 'Client {0} needs approval within {1} seconds'
257
223
        else:
258
 
            message = 'Client %s will get its secret in %s seconds'
259
 
        self.logger(message
260
 
                    % (self.properties["Name"], timeout/1000))
261
 
        self.using_timer(True)
 
224
            message = 'Client {0} will get its secret in {1} seconds'
 
225
        self.logger(message.format(self.properties["Name"],
 
226
                                   timeout/1000))
262
227
    
263
228
    def rejected(self, reason):
264
 
        self.logger('Client %s was rejected; reason: %s'
265
 
                    % (self.properties["Name"], reason))
 
229
        self.logger('Client {0} was rejected; reason: {1}'
 
230
                    .format(self.properties["Name"], reason))
266
231
    
267
232
    def selectable(self):
268
233
        """Make this a "selectable" widget.
290
255
                          "bold-underline-blink":
291
256
                              "bold-underline-blink-standout",
292
257
                          }
293
 
 
 
258
        
294
259
        # Rebuild focus and non-focus widgets using current properties
295
 
 
 
260
        
296
261
        # Base part of a client. Name!
297
 
        base = ('%(name)s: '
298
 
                      % {"name": self.properties["Name"]})
 
262
        base = '{name}: '.format(name=self.properties["Name"])
299
263
        if not self.properties["Enabled"]:
300
264
            message = "DISABLED"
 
265
            self.using_timer(False)
301
266
        elif self.properties["ApprovalPending"]:
302
267
            timeout = datetime.timedelta(milliseconds
303
268
                                         = self.properties
305
270
            last_approval_request = isoformat_to_datetime(
306
271
                self.properties["LastApprovalRequest"])
307
272
            if last_approval_request is not None:
308
 
                timer = timeout - (datetime.datetime.utcnow()
309
 
                                   - last_approval_request)
 
273
                timer = max(timeout - (datetime.datetime.utcnow()
 
274
                                       - last_approval_request),
 
275
                            datetime.timedelta())
310
276
            else:
311
277
                timer = datetime.timedelta()
312
278
            if self.properties["ApprovedByDefault"]:
313
 
                message = "Approval in %s. (d)eny?"
 
279
                message = "Approval in {0}. (d)eny?"
314
280
            else:
315
 
                message = "Denial in %s. (a)pprove?"
316
 
            message = message % unicode(timer).rsplit(".", 1)[0]
317
 
        elif self.last_checker_failed:
318
 
            # When checker has failed, print a timer until client expires
 
281
                message = "Denial in {0}. (a)pprove?"
 
282
            message = message.format(unicode(timer).rsplit(".", 1)[0])
 
283
            self.using_timer(True)
 
284
        elif self.properties["LastCheckerStatus"] != 0:
 
285
            # When checker has failed, show timer until client expires
319
286
            expires = self.properties["Expires"]
320
287
            if expires == "":
321
288
                timer = datetime.timedelta(0)
322
289
            else:
323
 
                expires = datetime.datetime.strptime(expires,
324
 
                                                     '%Y-%m-%dT%H:%M:%S.%f')
325
 
                timer = expires - datetime.datetime.utcnow()
 
290
                expires = (datetime.datetime.strptime
 
291
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
292
                timer = max(expires - datetime.datetime.utcnow(),
 
293
                            datetime.timedelta())
326
294
            message = ('A checker has failed! Time until client'
327
 
                       ' gets disabled: %s'
328
 
                           % unicode(timer).rsplit(".", 1)[0])
 
295
                       ' gets disabled: {0}'
 
296
                       .format(unicode(timer).rsplit(".", 1)[0]))
 
297
            self.using_timer(True)
329
298
        else:
330
299
            message = "enabled"
331
 
        self._text = "%s%s" % (base, message)
332
 
            
 
300
            self.using_timer(False)
 
301
        self._text = "{0}{1}".format(base, message)
 
302
        
333
303
        if not urwid.supports_unicode():
334
304
            self._text = self._text.encode("ascii", "replace")
335
305
        textlist = [("normal", self._text)]
352
322
        self.update()
353
323
        return True             # Keep calling this
354
324
    
355
 
    def delete(self, *args, **kwargs):
 
325
    def delete(self, **kwargs):
356
326
        if self._update_timer_callback_tag is not None:
357
327
            gobject.source_remove(self._update_timer_callback_tag)
358
328
            self._update_timer_callback_tag = None
361
331
        self.match_objects = ()
362
332
        if self.delete_hook is not None:
363
333
            self.delete_hook(self)
364
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
 
334
        return super(MandosClientWidget, self).delete(**kwargs)
365
335
    
366
336
    def render(self, maxcolrow, focus=False):
367
337
        """Render differently if we have focus.
409
379
        else:
410
380
            return key
411
381
    
412
 
    def property_changed(self, property=None, value=None,
413
 
                         *args, **kwargs):
 
382
    def property_changed(self, property=None, **kwargs):
414
383
        """Call self.update() if old value is not new value.
415
384
        This overrides the method from MandosClientPropertyCache"""
416
385
        property_name = unicode(property)
417
386
        old_value = self.properties.get(property_name)
418
387
        super(MandosClientWidget, self).property_changed(
419
 
            property=property, value=value, *args, **kwargs)
 
388
            property=property, **kwargs)
420
389
        if self.properties.get(property_name) != old_value:
421
390
            self.update()
422
391
 
426
395
    "down" key presses, thus not allowing any containing widgets to
427
396
    use them as an excuse to shift focus away from this widget.
428
397
    """
429
 
    def keypress(self, maxcolrow, key):
430
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
 
398
    def keypress(self, *args, **kwargs):
 
399
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
431
400
        if ret in ("up", "down"):
432
401
            return
433
402
        return ret
497
466
        
498
467
        self.busname = domain + '.Mandos'
499
468
        self.main_loop = gobject.MainLoop()
500
 
        self.bus = dbus.SystemBus()
501
 
        mandos_dbus_objc = self.bus.get_object(
502
 
            self.busname, "/", follow_name_owner_changes=True)
503
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
504
 
                                          dbus_interface
505
 
                                          = server_interface)
506
 
        try:
507
 
            mandos_clients = (self.mandos_serv
508
 
                              .GetAllClientsWithProperties())
509
 
        except dbus.exceptions.DBusException:
510
 
            mandos_clients = dbus.Dictionary()
511
 
        
512
 
        (self.mandos_serv
513
 
         .connect_to_signal("ClientRemoved",
514
 
                            self.find_and_remove_client,
515
 
                            dbus_interface=server_interface,
516
 
                            byte_arrays=True))
517
 
        (self.mandos_serv
518
 
         .connect_to_signal("ClientAdded",
519
 
                            self.add_new_client,
520
 
                            dbus_interface=server_interface,
521
 
                            byte_arrays=True))
522
 
        (self.mandos_serv
523
 
         .connect_to_signal("ClientNotFound",
524
 
                            self.client_not_found,
525
 
                            dbus_interface=server_interface,
526
 
                            byte_arrays=True))
527
 
        for path, client in mandos_clients.iteritems():
528
 
            client_proxy_object = self.bus.get_object(self.busname,
529
 
                                                      path)
530
 
            self.add_client(MandosClientWidget(server_proxy_object
531
 
                                               =self.mandos_serv,
532
 
                                               proxy_object
533
 
                                               =client_proxy_object,
534
 
                                               properties=client,
535
 
                                               update_hook
536
 
                                               =self.refresh,
537
 
                                               delete_hook
538
 
                                               =self.remove_client,
539
 
                                               logger
540
 
                                               =self.log_message),
541
 
                            path=path)
542
469
    
543
470
    def client_not_found(self, fingerprint, address):
544
 
        self.log_message(("Client with address %s and fingerprint %s"
545
 
                          " could not be found" % (address,
546
 
                                                    fingerprint)))
 
471
        self.log_message("Client with address {0} and fingerprint"
 
472
                         " {1} could not be found"
 
473
                         .format(address, fingerprint))
547
474
    
548
475
    def rebuild(self):
549
476
        """This rebuilds the User Interface.
559
486
                                                     self.divider)))
560
487
        if self.log_visible:
561
488
            self.uilist.append(self.logbox)
562
 
            pass
563
489
        self.topwidget = urwid.Pile(self.uilist)
564
490
    
565
491
    def log_message(self, message):
603
529
            client = self.clients_dict[path]
604
530
        except KeyError:
605
531
            # not found?
606
 
            self.log_message("Unknown client %r (%r) removed", name,
607
 
                             path)
 
532
            self.log_message("Unknown client {0!r} ({1!r}) removed"
 
533
                             .format(name, path))
608
534
            return
609
535
        client.delete()
610
536
    
649
575
    
650
576
    def run(self):
651
577
        """Start the main loop and exit when it's done."""
 
578
        self.bus = dbus.SystemBus()
 
579
        mandos_dbus_objc = self.bus.get_object(
 
580
            self.busname, "/", follow_name_owner_changes=True)
 
581
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
582
                                          dbus_interface
 
583
                                          = server_interface)
 
584
        try:
 
585
            mandos_clients = (self.mandos_serv
 
586
                              .GetAllClientsWithProperties())
 
587
        except dbus.exceptions.DBusException:
 
588
            mandos_clients = dbus.Dictionary()
 
589
        
 
590
        (self.mandos_serv
 
591
         .connect_to_signal("ClientRemoved",
 
592
                            self.find_and_remove_client,
 
593
                            dbus_interface=server_interface,
 
594
                            byte_arrays=True))
 
595
        (self.mandos_serv
 
596
         .connect_to_signal("ClientAdded",
 
597
                            self.add_new_client,
 
598
                            dbus_interface=server_interface,
 
599
                            byte_arrays=True))
 
600
        (self.mandos_serv
 
601
         .connect_to_signal("ClientNotFound",
 
602
                            self.client_not_found,
 
603
                            dbus_interface=server_interface,
 
604
                            byte_arrays=True))
 
605
        for path, client in mandos_clients.iteritems():
 
606
            client_proxy_object = self.bus.get_object(self.busname,
 
607
                                                      path)
 
608
            self.add_client(MandosClientWidget(server_proxy_object
 
609
                                               =self.mandos_serv,
 
610
                                               proxy_object
 
611
                                               =client_proxy_object,
 
612
                                               properties=client,
 
613
                                               update_hook
 
614
                                               =self.refresh,
 
615
                                               delete_hook
 
616
                                               =self.remove_client,
 
617
                                               logger
 
618
                                               =self.log_message),
 
619
                            path=path)
 
620
        
652
621
        self.refresh()
653
622
        self._input_callback_tag = (gobject.io_add_watch
654
623
                                    (sys.stdin.fileno(),