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  • Committer: teddy at recompile
  • Date: 2011-12-27 12:15:06 UTC
  • Revision ID: teddy@recompile.se-20111227121506-2qqqdy8evr9ts2ub
Add TODO entries about new D-Bus features we should use.

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mandos-monitor
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# 
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# Mandos Monitor - Control and monitor the Mandos server
5
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# 
6
 
# Copyright © 2009-2013 Teddy Hogeborn
7
 
# Copyright © 2009-2013 Björn Påhlsson
 
6
# Copyright © 2009-2011 Teddy Hogeborn
 
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# Copyright © 2009-2011 Björn Påhlsson
8
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# 
9
9
# This program is free software: you can redistribute it and/or modify
10
10
# it under the terms of the GNU General Public License as published by
17
17
#     GNU General Public License for more details.
18
18
# 
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
22
# Contact the authors at <mandos@recompile.se>.
24
23
# 
25
24
 
26
25
from __future__ import (division, absolute_import, print_function,
27
26
                        unicode_literals)
28
 
try:
29
 
    from future_builtins import *
30
 
except ImportError:
31
 
    pass
32
27
 
33
28
import sys
34
29
import os
40
35
import urwid
41
36
 
42
37
from dbus.mainloop.glib import DBusGMainLoop
43
 
try:
44
 
    import gobject
45
 
except ImportError:
46
 
    from gi.repository import GObject as gobject
 
38
import gobject
47
39
 
48
40
import dbus
49
41
 
 
42
import UserList
 
43
 
50
44
import locale
51
45
 
52
 
if sys.version_info[0] == 2:
53
 
    str = unicode
54
 
 
55
46
locale.setlocale(locale.LC_ALL, '')
56
47
 
57
48
import logging
61
52
domain = 'se.recompile'
62
53
server_interface = domain + '.Mandos'
63
54
client_interface = domain + '.Mandos.Client'
64
 
version = "1.6.1"
 
55
version = "1.4.1"
 
56
 
 
57
# Always run in monochrome mode
 
58
urwid.curses_display.curses.has_colors = lambda : False
 
59
 
 
60
# Urwid doesn't support blinking, but we want it.  Since we have no
 
61
# use for underline on its own, we make underline also always blink.
 
62
urwid.curses_display.curses.A_UNDERLINE |= (
 
63
    urwid.curses_display.curses.A_BLINK)
65
64
 
66
65
def isoformat_to_datetime(iso):
67
66
    "Parse an ISO 8601 date string to a datetime.datetime()"
84
83
    properties and calls a hook function when any of them are
85
84
    changed.
86
85
    """
87
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
86
    def __init__(self, proxy_object=None, *args, **kwargs):
88
87
        self.proxy = proxy_object # Mandos Client proxy object
89
 
        self.properties = dict() if properties is None else properties
 
88
        
 
89
        self.properties = dict()
90
90
        self.property_changed_match = (
91
91
            self.proxy.connect_to_signal("PropertyChanged",
92
 
                                         self._property_changed,
 
92
                                         self.property_changed,
93
93
                                         client_interface,
94
94
                                         byte_arrays=True))
95
95
        
96
 
        if properties is None:
97
 
            self.properties.update(
98
 
                self.proxy.GetAll(client_interface,
99
 
                                  dbus_interface
100
 
                                  = dbus.PROPERTIES_IFACE))
101
 
        
102
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
103
 
    
104
 
    def _property_changed(self, property, value):
105
 
        """Helper which takes positional arguments"""
106
 
        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)
107
103
    
108
104
    def property_changed(self, property=None, value=None):
109
105
        """This is called whenever we get a PropertyChanged signal
112
108
        # Update properties dict with new value
113
109
        self.properties[property] = value
114
110
    
115
 
    def delete(self):
 
111
    def delete(self, *args, **kwargs):
116
112
        self.property_changed_match.remove()
 
113
        super(MandosClientPropertyCache, self).__init__(
 
114
            *args, **kwargs)
117
115
 
118
116
 
119
117
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
121
119
    """
122
120
    
123
121
    def __init__(self, server_proxy_object=None, update_hook=None,
124
 
                 delete_hook=None, logger=None, **kwargs):
 
122
                 delete_hook=None, logger=None, *args, **kwargs):
125
123
        # Called on update
126
124
        self.update_hook = update_hook
127
125
        # Called on delete
132
130
        self.logger = logger
133
131
        
134
132
        self._update_timer_callback_tag = None
 
133
        self._update_timer_callback_lock = 0
 
134
        self.last_checker_failed = False
135
135
        
136
136
        # The widget shown normally
137
137
        self._text_widget = urwid.Text("")
138
138
        # The widget shown when we have focus
139
139
        self._focus_text_widget = urwid.Text("")
140
 
        super(MandosClientWidget, self).__init__(**kwargs)
 
140
        super(MandosClientWidget, self).__init__(
 
141
            update_hook=update_hook, delete_hook=delete_hook,
 
142
            *args, **kwargs)
141
143
        self.update()
142
144
        self.opened = False
143
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
        
144
164
        self.match_objects = (
145
165
            self.proxy.connect_to_signal("CheckerCompleted",
146
166
                                         self.checker_completed,
162
182
                                         self.rejected,
163
183
                                         client_interface,
164
184
                                         byte_arrays=True))
165
 
        #self.logger('Created client {0}'
166
 
        #            .format(self.properties["Name"]))
 
185
        #self.logger('Created client %s' % (self.properties["Name"]))
167
186
    
 
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
        
168
193
    def using_timer(self, flag):
169
194
        """Call this method with True or False when timer should be
170
195
        activated or deactivated.
171
196
        """
172
 
        if flag and self._update_timer_callback_tag is None:
 
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:
173
203
            # Will update the shown timer value every second
174
204
            self._update_timer_callback_tag = (gobject.timeout_add
175
205
                                               (1000,
176
206
                                                self.update_timer))
177
 
        elif not (flag or self._update_timer_callback_tag is None):
 
207
        elif old and self._update_timer_callback_lock == 0:
178
208
            gobject.source_remove(self._update_timer_callback_tag)
179
209
            self._update_timer_callback_tag = None
180
210
    
181
211
    def checker_completed(self, exitstatus, condition, command):
182
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))
183
219
            self.update()
184
220
            return
185
221
        # Checker failed
 
222
        if not self.last_checker_failed:
 
223
            self.last_checker_failed = True
 
224
            self.using_timer(True)
186
225
        if os.WIFEXITED(condition):
187
 
            self.logger('Checker for client {0} (command "{1}")'
188
 
                        ' failed with exit code {2}'
189
 
                        .format(self.properties["Name"], command,
190
 
                                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)))
191
230
        elif os.WIFSIGNALED(condition):
192
 
            self.logger('Checker for client {0} (command "{1}") was'
193
 
                        ' killed by signal {2}'
194
 
                        .format(self.properties["Name"], command,
195
 
                                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)))
196
235
        elif os.WCOREDUMP(condition):
197
 
            self.logger('Checker for client {0} (command "{1}")'
 
236
            self.logger('Checker for client %s (command "%s")'
198
237
                        ' dumped core'
199
 
                        .format(self.properties["Name"], command))
 
238
                        % (self.properties["Name"], command))
200
239
        else:
201
 
            self.logger('Checker for client {0} completed'
202
 
                        ' mysteriously'
203
 
                        .format(self.properties["Name"]))
 
240
            self.logger('Checker for client %s completed'
 
241
                        ' mysteriously')
204
242
        self.update()
205
243
    
206
244
    def checker_started(self, command):
207
245
        """Server signals that a checker started. This could be useful
208
246
           to log in the future. """
209
 
        #self.logger('Client {0} started checker "{1}"'
210
 
        #            .format(self.properties["Name"],
211
 
        #                    str(command)))
 
247
        #self.logger('Client %s started checker "%s"'
 
248
        #            % (self.properties["Name"], unicode(command)))
212
249
        pass
213
250
    
214
251
    def got_secret(self):
215
 
        self.logger('Client {0} received its secret'
216
 
                    .format(self.properties["Name"]))
 
252
        self.last_checker_failed = False
 
253
        self.logger('Client %s received its secret'
 
254
                    % self.properties["Name"])
217
255
    
218
256
    def need_approval(self, timeout, default):
219
257
        if not default:
220
 
            message = 'Client {0} needs approval within {1} seconds'
 
258
            message = 'Client %s needs approval within %s seconds'
221
259
        else:
222
 
            message = 'Client {0} will get its secret in {1} seconds'
223
 
        self.logger(message.format(self.properties["Name"],
224
 
                                   timeout/1000))
 
260
            message = 'Client %s will get its secret in %s seconds'
 
261
        self.logger(message
 
262
                    % (self.properties["Name"], timeout/1000))
 
263
        self.using_timer(True)
225
264
    
226
265
    def rejected(self, reason):
227
 
        self.logger('Client {0} was rejected; reason: {1}'
228
 
                    .format(self.properties["Name"], reason))
 
266
        self.logger('Client %s was rejected; reason: %s'
 
267
                    % (self.properties["Name"], reason))
229
268
    
230
269
    def selectable(self):
231
270
        """Make this a "selectable" widget.
253
292
                          "bold-underline-blink":
254
293
                              "bold-underline-blink-standout",
255
294
                          }
256
 
        
 
295
 
257
296
        # Rebuild focus and non-focus widgets using current properties
258
 
        
 
297
 
259
298
        # Base part of a client. Name!
260
 
        base = '{name}: '.format(name=self.properties["Name"])
 
299
        base = ('%(name)s: '
 
300
                      % {"name": self.properties["Name"]})
261
301
        if not self.properties["Enabled"]:
262
302
            message = "DISABLED"
263
 
            self.using_timer(False)
264
303
        elif self.properties["ApprovalPending"]:
265
304
            timeout = datetime.timedelta(milliseconds
266
305
                                         = self.properties
268
307
            last_approval_request = isoformat_to_datetime(
269
308
                self.properties["LastApprovalRequest"])
270
309
            if last_approval_request is not None:
271
 
                timer = max(timeout - (datetime.datetime.utcnow()
272
 
                                       - last_approval_request),
273
 
                            datetime.timedelta())
 
310
                timer = timeout - (datetime.datetime.utcnow()
 
311
                                   - last_approval_request)
274
312
            else:
275
313
                timer = datetime.timedelta()
276
314
            if self.properties["ApprovedByDefault"]:
277
 
                message = "Approval in {0}. (d)eny?"
 
315
                message = "Approval in %s. (d)eny?"
278
316
            else:
279
 
                message = "Denial in {0}. (a)pprove?"
280
 
            message = message.format(str(timer).rsplit(".", 1)[0])
281
 
            self.using_timer(True)
282
 
        elif self.properties["LastCheckerStatus"] != 0:
283
 
            # When checker has failed, show timer until client expires
 
317
                message = "Denial in %s. (a)pprove?"
 
318
            message = message % unicode(timer).rsplit(".", 1)[0]
 
319
        elif self.last_checker_failed:
 
320
            # When checker has failed, print a timer until client expires
284
321
            expires = self.properties["Expires"]
285
322
            if expires == "":
286
323
                timer = datetime.timedelta(0)
287
324
            else:
288
 
                expires = (datetime.datetime.strptime
289
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
290
 
                timer = max(expires - datetime.datetime.utcnow(),
291
 
                            datetime.timedelta())
 
325
                expires = datetime.datetime.strptime(expires,
 
326
                                                     '%Y-%m-%dT%H:%M:%S.%f')
 
327
                timer = expires - datetime.datetime.utcnow()
292
328
            message = ('A checker has failed! Time until client'
293
 
                       ' gets disabled: {0}'
294
 
                       .format(str(timer).rsplit(".", 1)[0]))
295
 
            self.using_timer(True)
 
329
                       ' gets disabled: %s'
 
330
                           % unicode(timer).rsplit(".", 1)[0])
296
331
        else:
297
332
            message = "enabled"
298
 
            self.using_timer(False)
299
 
        self._text = "{0}{1}".format(base, message)
300
 
        
 
333
        self._text = "%s%s" % (base, message)
 
334
            
301
335
        if not urwid.supports_unicode():
302
336
            self._text = self._text.encode("ascii", "replace")
303
337
        textlist = [("normal", self._text)]
320
354
        self.update()
321
355
        return True             # Keep calling this
322
356
    
323
 
    def delete(self, **kwargs):
 
357
    def delete(self, *args, **kwargs):
324
358
        if self._update_timer_callback_tag is not None:
325
359
            gobject.source_remove(self._update_timer_callback_tag)
326
360
            self._update_timer_callback_tag = None
329
363
        self.match_objects = ()
330
364
        if self.delete_hook is not None:
331
365
            self.delete_hook(self)
332
 
        return super(MandosClientWidget, self).delete(**kwargs)
 
366
        return super(MandosClientWidget, self).delete(*args, **kwargs)
333
367
    
334
368
    def render(self, maxcolrow, focus=False):
335
369
        """Render differently if we have focus.
377
411
        else:
378
412
            return key
379
413
    
380
 
    def property_changed(self, property=None, **kwargs):
 
414
    def property_changed(self, property=None, value=None,
 
415
                         *args, **kwargs):
381
416
        """Call self.update() if old value is not new value.
382
417
        This overrides the method from MandosClientPropertyCache"""
383
 
        property_name = str(property)
 
418
        property_name = unicode(property)
384
419
        old_value = self.properties.get(property_name)
385
420
        super(MandosClientWidget, self).property_changed(
386
 
            property=property, **kwargs)
 
421
            property=property, value=value, *args, **kwargs)
387
422
        if self.properties.get(property_name) != old_value:
388
423
            self.update()
389
424
 
393
428
    "down" key presses, thus not allowing any containing widgets to
394
429
    use them as an excuse to shift focus away from this widget.
395
430
    """
396
 
    def keypress(self, *args, **kwargs):
397
 
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
431
    def keypress(self, maxcolrow, key):
 
432
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
398
433
        if ret in ("up", "down"):
399
434
            return
400
435
        return ret
413
448
                ("normal",
414
449
                 "default", "default", None),
415
450
                ("bold",
416
 
                 "bold", "default", "bold"),
 
451
                 "default", "default", "bold"),
417
452
                ("underline-blink",
418
 
                 "underline,blink", "default", "underline,blink"),
 
453
                 "default", "default", "underline"),
419
454
                ("standout",
420
 
                 "standout", "default", "standout"),
 
455
                 "default", "default", "standout"),
421
456
                ("bold-underline-blink",
422
 
                 "bold,underline,blink", "default", "bold,underline,blink"),
 
457
                 "default", "default", ("bold", "underline")),
423
458
                ("bold-standout",
424
 
                 "bold,standout", "default", "bold,standout"),
 
459
                 "default", "default", ("bold", "standout")),
425
460
                ("underline-blink-standout",
426
 
                 "underline,blink,standout", "default",
427
 
                 "underline,blink,standout"),
 
461
                 "default", "default", ("underline", "standout")),
428
462
                ("bold-underline-blink-standout",
429
 
                 "bold,underline,blink,standout", "default",
430
 
                 "bold,underline,blink,standout"),
 
463
                 "default", "default", ("bold", "underline",
 
464
                                          "standout")),
431
465
                ))
432
466
        
433
467
        if urwid.supports_unicode():
467
501
        self.main_loop = gobject.MainLoop()
468
502
    
469
503
    def client_not_found(self, fingerprint, address):
470
 
        self.log_message("Client with address {0} and fingerprint"
471
 
                         " {1} could not be found"
472
 
                         .format(address, fingerprint))
 
504
        self.log_message(("Client with address %s and fingerprint %s"
 
505
                          " could not be found" % (address,
 
506
                                                    fingerprint)))
473
507
    
474
508
    def rebuild(self):
475
509
        """This rebuilds the User Interface.
488
522
        self.topwidget = urwid.Pile(self.uilist)
489
523
    
490
524
    def log_message(self, message):
491
 
        """Log message formatted with timestamp"""
492
525
        timestamp = datetime.datetime.now().isoformat()
493
526
        self.log_message_raw(timestamp + ": " + message)
494
527
    
507
540
        self.log_visible = not self.log_visible
508
541
        self.rebuild()
509
542
        #self.log_message("Log visibility changed to: "
510
 
        #                 + str(self.log_visible))
 
543
        #                 + unicode(self.log_visible))
511
544
    
512
545
    def change_log_display(self):
513
546
        """Change type of log display.
529
562
            client = self.clients_dict[path]
530
563
        except KeyError:
531
564
            # not found?
532
 
            self.log_message("Unknown client {0!r} ({1!r}) removed"
533
 
                             .format(name, path))
 
565
            self.log_message("Unknown client %r (%r) removed", name,
 
566
                             path)
534
567
            return
535
568
        client.delete()
536
569
    
553
586
        if path is None:
554
587
            path = client.proxy.object_path
555
588
        self.clients_dict[path] = client
556
 
        self.clients.sort(key=lambda c: c.properties["Name"])
 
589
        self.clients.sort(None, lambda c: c.properties["Name"])
557
590
        self.refresh()
558
591
    
559
592
    def remove_client(self, client, path=None):
561
594
        if path is None:
562
595
            path = client.proxy.object_path
563
596
        del self.clients_dict[path]
 
597
        if not self.clients_dict:
 
598
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
599
            # is completely emptied, we need to recreate it.
 
600
            self.clients = urwid.SimpleListWalker([])
 
601
            self.rebuild()
564
602
        self.refresh()
565
603
    
566
604
    def refresh(self):
579
617
        try:
580
618
            mandos_clients = (self.mandos_serv
581
619
                              .GetAllClientsWithProperties())
582
 
            if not mandos_clients:
583
 
                self.log_message_raw(("bold", "Note: Server has no clients."))
584
620
        except dbus.exceptions.DBusException:
585
 
            self.log_message_raw(("bold", "Note: No Mandos server running."))
586
621
            mandos_clients = dbus.Dictionary()
587
622
        
588
623
        (self.mandos_serv
600
635
                            self.client_not_found,
601
636
                            dbus_interface=server_interface,
602
637
                            byte_arrays=True))
603
 
        for path, client in mandos_clients.items():
 
638
        for path, client in mandos_clients.iteritems():
604
639
            client_proxy_object = self.bus.get_object(self.busname,
605
640
                                                      path)
606
641
            self.add_client(MandosClientWidget(server_proxy_object
615
650
                                               logger
616
651
                                               =self.log_message),
617
652
                            path=path)
618
 
        
 
653
 
619
654
        self.refresh()
620
655
        self._input_callback_tag = (gobject.io_add_watch
621
656
                                    (sys.stdin.fileno(),
718
753
    ui.run()
719
754
except KeyboardInterrupt:
720
755
    ui.screen.stop()
721
 
except Exception as e:
722
 
    ui.log_message(str(e))
 
756
except Exception, e:
 
757
    ui.log_message(unicode(e))
723
758
    ui.screen.stop()
724
759
    raise