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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 © 2009-2012 Teddy Hogeborn
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# Copyright © 2009-2012 Björn Påhlsson
 
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# Copyright © 2009-2011 Teddy Hogeborn
 
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# Copyright © 2009-2011 Björn Påhlsson
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# 
9
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# This program is free software: you can redistribute it and/or modify
10
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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.
18
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# 
19
19
# You should have received a copy of the GNU General Public License
20
 
# along with this program.  If not, see
21
 
# <http://www.gnu.org/licenses/>.
 
20
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
22
21
# 
23
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# Contact the authors at <mandos@recompile.se>.
24
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# 
26
25
from __future__ import (division, absolute_import, print_function,
27
26
                        unicode_literals)
28
27
 
29
 
from future_builtins import *
30
 
 
31
28
import sys
32
29
import os
33
30
import signal
55
52
domain = 'se.recompile'
56
53
server_interface = domain + '.Mandos'
57
54
client_interface = domain + '.Mandos.Client'
58
 
version = "1.5.3"
 
55
version = "1.4.1"
59
56
 
60
57
# Always run in monochrome mode
61
58
urwid.curses_display.curses.has_colors = lambda : False
86
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    properties and calls a hook function when any of them are
87
84
    changed.
88
85
    """
89
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
86
    def __init__(self, proxy_object=None, *args, **kwargs):
90
87
        self.proxy = proxy_object # Mandos Client proxy object
91
 
        self.properties = dict() if properties is None else properties
 
88
        
 
89
        self.properties = dict()
92
90
        self.property_changed_match = (
93
91
            self.proxy.connect_to_signal("PropertyChanged",
94
 
                                         self._property_changed,
 
92
                                         self.property_changed,
95
93
                                         client_interface,
96
94
                                         byte_arrays=True))
97
95
        
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)
 
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)
109
103
    
110
104
    def property_changed(self, property=None, value=None):
111
105
        """This is called whenever we get a PropertyChanged signal
114
108
        # Update properties dict with new value
115
109
        self.properties[property] = value
116
110
    
117
 
    def delete(self):
 
111
    def delete(self, *args, **kwargs):
118
112
        self.property_changed_match.remove()
 
113
        super(MandosClientPropertyCache, self).__init__(
 
114
            *args, **kwargs)
119
115
 
120
116
 
121
117
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
123
119
    """
124
120
    
125
121
    def __init__(self, server_proxy_object=None, update_hook=None,
126
 
                 delete_hook=None, logger=None, **kwargs):
 
122
                 delete_hook=None, logger=None, *args, **kwargs):
127
123
        # Called on update
128
124
        self.update_hook = update_hook
129
125
        # Called on delete
135
131
        
136
132
        self._update_timer_callback_tag = None
137
133
        self._update_timer_callback_lock = 0
 
134
        self.last_checker_failed = False
138
135
        
139
136
        # The widget shown normally
140
137
        self._text_widget = urwid.Text("")
141
138
        # The widget shown when we have focus
142
139
        self._focus_text_widget = urwid.Text("")
143
 
        super(MandosClientWidget, self).__init__(**kwargs)
 
140
        super(MandosClientWidget, self).__init__(
 
141
            update_hook=update_hook, delete_hook=delete_hook,
 
142
            *args, **kwargs)
144
143
        self.update()
145
144
        self.opened = False
146
145
        
147
146
        last_checked_ok = isoformat_to_datetime(self.properties
148
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"]))
149
157
        
150
 
        if self.properties ["LastCheckerStatus"] != 0:
 
158
        if self.last_checker_failed:
151
159
            self.using_timer(True)
152
160
        
153
161
        if self.need_approval:
174
182
                                         self.rejected,
175
183
                                         client_interface,
176
184
                                         byte_arrays=True))
177
 
        #self.logger('Created client {0}'
178
 
        #            .format(self.properties["Name"]))
 
185
        #self.logger('Created client %s' % (self.properties["Name"]))
179
186
    
180
187
    def property_changed(self, property=None, value=None):
181
188
        super(self, MandosClientWidget).property_changed(property,
182
189
                                                         value)
183
190
        if property == "ApprovalPending":
184
191
            using_timer(bool(value))
185
 
        if property == "LastCheckerStatus":
186
 
            using_timer(value != 0)
187
 
            #self.logger('Checker for client {0} (command "{1}") was '
188
 
            #            ' successful'.format(self.properties["Name"],
189
 
            #                                 command))
190
 
    
 
192
        
191
193
    def using_timer(self, flag):
192
194
        """Call this method with True or False when timer should be
193
195
        activated or deactivated.
208
210
    
209
211
    def checker_completed(self, exitstatus, condition, command):
210
212
        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))
211
219
            self.update()
212
220
            return
213
221
        # Checker failed
 
222
        if not self.last_checker_failed:
 
223
            self.last_checker_failed = True
 
224
            self.using_timer(True)
214
225
        if os.WIFEXITED(condition):
215
 
            self.logger('Checker for client {0} (command "{1}")'
216
 
                        ' failed with exit code {2}'
217
 
                        .format(self.properties["Name"], command,
218
 
                                os.WEXITSTATUS(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)))
219
230
        elif os.WIFSIGNALED(condition):
220
 
            self.logger('Checker for client {0} (command "{1}") was'
221
 
                        ' killed by signal {2}'
222
 
                        .format(self.properties["Name"], command,
223
 
                                os.WTERMSIG(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)))
224
235
        elif os.WCOREDUMP(condition):
225
 
            self.logger('Checker for client {0} (command "{1}")'
 
236
            self.logger('Checker for client %s (command "%s")'
226
237
                        ' dumped core'
227
 
                        .format(self.properties["Name"], command))
 
238
                        % (self.properties["Name"], command))
228
239
        else:
229
 
            self.logger('Checker for client {0} completed'
230
 
                        ' mysteriously'
231
 
                        .format(self.properties["Name"]))
 
240
            self.logger('Checker for client %s completed'
 
241
                        ' mysteriously')
232
242
        self.update()
233
243
    
234
244
    def checker_started(self, command):
235
 
        """Server signals that a checker started. This could be useful
236
 
           to log in the future. """
237
 
        #self.logger('Client {0} started checker "{1}"'
238
 
        #            .format(self.properties["Name"],
239
 
        #                    unicode(command)))
 
245
        #self.logger('Client %s started checker "%s"'
 
246
        #            % (self.properties["Name"], unicode(command)))
240
247
        pass
241
248
    
242
249
    def got_secret(self):
243
 
        self.logger('Client {0} received its secret'
244
 
                    .format(self.properties["Name"]))
 
250
        self.last_checker_failed = False
 
251
        self.logger('Client %s received its secret'
 
252
                    % self.properties["Name"])
245
253
    
246
254
    def need_approval(self, timeout, default):
247
255
        if not default:
248
 
            message = 'Client {0} needs approval within {1} seconds'
 
256
            message = 'Client %s needs approval within %s seconds'
249
257
        else:
250
 
            message = 'Client {0} will get its secret in {1} seconds'
251
 
        self.logger(message.format(self.properties["Name"],
252
 
                                   timeout/1000))
 
258
            message = 'Client %s will get its secret in %s seconds'
 
259
        self.logger(message
 
260
                    % (self.properties["Name"], timeout/1000))
253
261
        self.using_timer(True)
254
262
    
255
263
    def rejected(self, reason):
256
 
        self.logger('Client {0} was rejected; reason: {1}'
257
 
                    .format(self.properties["Name"], reason))
 
264
        self.logger('Client %s was rejected; reason: %s'
 
265
                    % (self.properties["Name"], reason))
258
266
    
259
267
    def selectable(self):
260
268
        """Make this a "selectable" widget.
286
294
        # Rebuild focus and non-focus widgets using current properties
287
295
 
288
296
        # Base part of a client. Name!
289
 
        base = '{name}: '.format(name=self.properties["Name"])
 
297
        base = ('%(name)s: '
 
298
                      % {"name": self.properties["Name"]})
290
299
        if not self.properties["Enabled"]:
291
300
            message = "DISABLED"
292
301
        elif self.properties["ApprovalPending"]:
301
310
            else:
302
311
                timer = datetime.timedelta()
303
312
            if self.properties["ApprovedByDefault"]:
304
 
                message = "Approval in {0}. (d)eny?"
 
313
                message = "Approval in %s. (d)eny?"
305
314
            else:
306
 
                message = "Denial in {0}. (a)pprove?"
307
 
            message = message.format(unicode(timer).rsplit(".", 1)[0])
308
 
        elif self.properties["LastCheckerStatus"] != 0:
309
 
            # When checker has failed, show timer until client expires
 
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
310
319
            expires = self.properties["Expires"]
311
320
            if expires == "":
312
321
                timer = datetime.timedelta(0)
313
322
            else:
314
 
                expires = (datetime.datetime.strptime
315
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
323
                expires = datetime.datetime.strptime(expires,
 
324
                                                     '%Y-%m-%dT%H:%M:%S.%f')
316
325
                timer = expires - datetime.datetime.utcnow()
317
326
            message = ('A checker has failed! Time until client'
318
 
                       ' gets disabled: {0}'
319
 
                       .format(unicode(timer).rsplit(".", 1)[0]))
 
327
                       ' gets disabled: %s'
 
328
                           % unicode(timer).rsplit(".", 1)[0])
320
329
        else:
321
330
            message = "enabled"
322
 
        self._text = "{0}{1}".format(base, message)
 
331
        self._text = "%s%s" % (base, message)
323
332
            
324
333
        if not urwid.supports_unicode():
325
334
            self._text = self._text.encode("ascii", "replace")
343
352
        self.update()
344
353
        return True             # Keep calling this
345
354
    
346
 
    def delete(self, **kwargs):
 
355
    def delete(self, *args, **kwargs):
347
356
        if self._update_timer_callback_tag is not None:
348
357
            gobject.source_remove(self._update_timer_callback_tag)
349
358
            self._update_timer_callback_tag = None
352
361
        self.match_objects = ()
353
362
        if self.delete_hook is not None:
354
363
            self.delete_hook(self)
355
 
        return super(MandosClientWidget, self).delete(**kwargs)
 
364
        return super(MandosClientWidget, self).delete(*args, **kwargs)
356
365
    
357
366
    def render(self, maxcolrow, focus=False):
358
367
        """Render differently if we have focus.
400
409
        else:
401
410
            return key
402
411
    
403
 
    def property_changed(self, property=None, **kwargs):
 
412
    def property_changed(self, property=None, value=None,
 
413
                         *args, **kwargs):
404
414
        """Call self.update() if old value is not new value.
405
415
        This overrides the method from MandosClientPropertyCache"""
406
416
        property_name = unicode(property)
407
417
        old_value = self.properties.get(property_name)
408
418
        super(MandosClientWidget, self).property_changed(
409
 
            property=property, **kwargs)
 
419
            property=property, value=value, *args, **kwargs)
410
420
        if self.properties.get(property_name) != old_value:
411
421
            self.update()
412
422
 
416
426
    "down" key presses, thus not allowing any containing widgets to
417
427
    use them as an excuse to shift focus away from this widget.
418
428
    """
419
 
    def keypress(self, *args, **kwargs):
420
 
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
429
    def keypress(self, maxcolrow, key):
 
430
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
421
431
        if ret in ("up", "down"):
422
432
            return
423
433
        return ret
487
497
        
488
498
        self.busname = domain + '.Mandos'
489
499
        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)
490
542
    
491
543
    def client_not_found(self, fingerprint, address):
492
 
        self.log_message("Client with address {0} and fingerprint"
493
 
                         " {1} could not be found"
494
 
                         .format(address, fingerprint))
 
544
        self.log_message(("Client with address %s and fingerprint %s"
 
545
                          " could not be found" % (address,
 
546
                                                    fingerprint)))
495
547
    
496
548
    def rebuild(self):
497
549
        """This rebuilds the User Interface.
507
559
                                                     self.divider)))
508
560
        if self.log_visible:
509
561
            self.uilist.append(self.logbox)
 
562
            pass
510
563
        self.topwidget = urwid.Pile(self.uilist)
511
564
    
512
565
    def log_message(self, message):
550
603
            client = self.clients_dict[path]
551
604
        except KeyError:
552
605
            # not found?
553
 
            self.log_message("Unknown client {0!r} ({1!r}) removed"
554
 
                             .format(name, path))
 
606
            self.log_message("Unknown client %r (%r) removed", name,
 
607
                             path)
555
608
            return
556
609
        client.delete()
557
610
    
596
649
    
597
650
    def run(self):
598
651
        """Start the main loop and exit when it's done."""
599
 
        self.bus = dbus.SystemBus()
600
 
        mandos_dbus_objc = self.bus.get_object(
601
 
            self.busname, "/", follow_name_owner_changes=True)
602
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
603
 
                                          dbus_interface
604
 
                                          = server_interface)
605
 
        try:
606
 
            mandos_clients = (self.mandos_serv
607
 
                              .GetAllClientsWithProperties())
608
 
        except dbus.exceptions.DBusException:
609
 
            mandos_clients = dbus.Dictionary()
610
 
        
611
 
        (self.mandos_serv
612
 
         .connect_to_signal("ClientRemoved",
613
 
                            self.find_and_remove_client,
614
 
                            dbus_interface=server_interface,
615
 
                            byte_arrays=True))
616
 
        (self.mandos_serv
617
 
         .connect_to_signal("ClientAdded",
618
 
                            self.add_new_client,
619
 
                            dbus_interface=server_interface,
620
 
                            byte_arrays=True))
621
 
        (self.mandos_serv
622
 
         .connect_to_signal("ClientNotFound",
623
 
                            self.client_not_found,
624
 
                            dbus_interface=server_interface,
625
 
                            byte_arrays=True))
626
 
        for path, client in mandos_clients.iteritems():
627
 
            client_proxy_object = self.bus.get_object(self.busname,
628
 
                                                      path)
629
 
            self.add_client(MandosClientWidget(server_proxy_object
630
 
                                               =self.mandos_serv,
631
 
                                               proxy_object
632
 
                                               =client_proxy_object,
633
 
                                               properties=client,
634
 
                                               update_hook
635
 
                                               =self.refresh,
636
 
                                               delete_hook
637
 
                                               =self.remove_client,
638
 
                                               logger
639
 
                                               =self.log_message),
640
 
                            path=path)
641
 
        
642
652
        self.refresh()
643
653
        self._input_callback_tag = (gobject.io_add_watch
644
654
                                    (sys.stdin.fileno(),