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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 © 2009-2016 Teddy Hogeborn
7
 
# Copyright © 2009-2016 Björn Påhlsson
 
6
# Copyright © 2009-2012 Teddy Hogeborn
 
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# Copyright © 2009-2012 Björn Påhlsson
8
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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
25
25
 
26
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from __future__ import (division, absolute_import, print_function,
27
27
                        unicode_literals)
28
 
try:
29
 
    from future_builtins import *
30
 
except ImportError:
31
 
    pass
 
28
 
 
29
from future_builtins import *
32
30
 
33
31
import sys
34
32
import os
 
33
import signal
35
34
 
36
35
import datetime
37
36
 
39
38
import urwid
40
39
 
41
40
from dbus.mainloop.glib import DBusGMainLoop
42
 
try:
43
 
    from gi.repository import GObject
44
 
except ImportError:
45
 
    import gobject as GObject
 
41
import gobject
46
42
 
47
43
import dbus
48
44
 
 
45
import UserList
 
46
 
49
47
import locale
50
48
 
51
 
if sys.version_info.major == 2:
52
 
    str = unicode
53
 
 
54
49
locale.setlocale(locale.LC_ALL, '')
55
50
 
56
51
import logging
60
55
domain = 'se.recompile'
61
56
server_interface = domain + '.Mandos'
62
57
client_interface = domain + '.Mandos.Client'
63
 
version = "1.7.3"
64
 
 
65
 
try:
66
 
    dbus.OBJECT_MANAGER_IFACE
67
 
except AttributeError:
68
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
58
version = "1.5.3"
 
59
 
 
60
# Always run in monochrome mode
 
61
urwid.curses_display.curses.has_colors = lambda : False
 
62
 
 
63
# Urwid doesn't support blinking, but we want it.  Since we have no
 
64
# use for underline on its own, we make underline also always blink.
 
65
urwid.curses_display.curses.A_UNDERLINE |= (
 
66
    urwid.curses_display.curses.A_BLINK)
69
67
 
70
68
def isoformat_to_datetime(iso):
71
69
    "Parse an ISO 8601 date string to a datetime.datetime()"
92
90
        self.proxy = proxy_object # Mandos Client proxy object
93
91
        self.properties = dict() if properties is None else properties
94
92
        self.property_changed_match = (
95
 
            self.proxy.connect_to_signal("PropertiesChanged",
96
 
                                         self.properties_changed,
97
 
                                         dbus.PROPERTIES_IFACE,
 
93
            self.proxy.connect_to_signal("PropertyChanged",
 
94
                                         self._property_changed,
 
95
                                         client_interface,
98
96
                                         byte_arrays=True))
99
97
        
100
98
        if properties is None:
105
103
        
106
104
        super(MandosClientPropertyCache, self).__init__(**kwargs)
107
105
    
108
 
    def properties_changed(self, interface, properties, invalidated):
109
 
        """This is called whenever we get a PropertiesChanged signal
110
 
        It updates the changed properties in the "properties" dict.
 
106
    def _property_changed(self, property, value):
 
107
        """Helper which takes positional arguments"""
 
108
        return self.property_changed(property=property, value=value)
 
109
    
 
110
    def property_changed(self, property=None, value=None):
 
111
        """This is called whenever we get a PropertyChanged signal
 
112
        It updates the changed property in the "properties" dict.
111
113
        """
112
114
        # Update properties dict with new value
113
 
        if interface == client_interface:
114
 
            self.properties.update(properties)
 
115
        self.properties[property] = value
115
116
    
116
117
    def delete(self):
117
118
        self.property_changed_match.remove()
163
164
                                         self.rejected,
164
165
                                         client_interface,
165
166
                                         byte_arrays=True))
166
 
        self.logger('Created client {}'
167
 
                    .format(self.properties["Name"]), level=0)
 
167
        #self.logger('Created client {0}'
 
168
        #            .format(self.properties["Name"]))
168
169
    
169
170
    def using_timer(self, flag):
170
171
        """Call this method with True or False when timer should be
172
173
        """
173
174
        if flag and self._update_timer_callback_tag is None:
174
175
            # Will update the shown timer value every second
175
 
            self._update_timer_callback_tag = (GObject.timeout_add
 
176
            self._update_timer_callback_tag = (gobject.timeout_add
176
177
                                               (1000,
177
178
                                                self.update_timer))
178
179
        elif not (flag or self._update_timer_callback_tag is None):
179
 
            GObject.source_remove(self._update_timer_callback_tag)
 
180
            gobject.source_remove(self._update_timer_callback_tag)
180
181
            self._update_timer_callback_tag = None
181
182
    
182
183
    def checker_completed(self, exitstatus, condition, command):
183
184
        if exitstatus == 0:
184
 
            self.logger('Checker for client {} (command "{}")'
185
 
                        ' succeeded'.format(self.properties["Name"],
186
 
                                            command), level=0)
187
185
            self.update()
188
186
            return
189
187
        # Checker failed
190
188
        if os.WIFEXITED(condition):
191
 
            self.logger('Checker for client {} (command "{}") failed'
192
 
                        ' with exit code {}'
 
189
            self.logger('Checker for client {0} (command "{1}")'
 
190
                        ' failed with exit code {2}'
193
191
                        .format(self.properties["Name"], command,
194
192
                                os.WEXITSTATUS(condition)))
195
193
        elif os.WIFSIGNALED(condition):
196
 
            self.logger('Checker for client {} (command "{}") was'
197
 
                        ' killed by signal {}'
 
194
            self.logger('Checker for client {0} (command "{1}") was'
 
195
                        ' killed by signal {2}'
198
196
                        .format(self.properties["Name"], command,
199
197
                                os.WTERMSIG(condition)))
 
198
        elif os.WCOREDUMP(condition):
 
199
            self.logger('Checker for client {0} (command "{1}")'
 
200
                        ' dumped core'
 
201
                        .format(self.properties["Name"], command))
 
202
        else:
 
203
            self.logger('Checker for client {0} completed'
 
204
                        ' mysteriously'
 
205
                        .format(self.properties["Name"]))
200
206
        self.update()
201
207
    
202
208
    def checker_started(self, command):
203
 
        """Server signals that a checker started."""
204
 
        self.logger('Client {} started checker "{}"'
205
 
                    .format(self.properties["Name"],
206
 
                            command), level=0)
 
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)))
 
214
        pass
207
215
    
208
216
    def got_secret(self):
209
 
        self.logger('Client {} received its secret'
 
217
        self.logger('Client {0} received its secret'
210
218
                    .format(self.properties["Name"]))
211
219
    
212
220
    def need_approval(self, timeout, default):
213
221
        if not default:
214
 
            message = 'Client {} needs approval within {} seconds'
 
222
            message = 'Client {0} needs approval within {1} seconds'
215
223
        else:
216
 
            message = 'Client {} will get its secret in {} seconds'
 
224
            message = 'Client {0} will get its secret in {1} seconds'
217
225
        self.logger(message.format(self.properties["Name"],
218
226
                                   timeout/1000))
219
227
    
220
228
    def rejected(self, reason):
221
 
        self.logger('Client {} was rejected; reason: {}'
 
229
        self.logger('Client {0} was rejected; reason: {1}'
222
230
                    .format(self.properties["Name"], reason))
223
231
    
224
232
    def selectable(self):
268
276
            else:
269
277
                timer = datetime.timedelta()
270
278
            if self.properties["ApprovedByDefault"]:
271
 
                message = "Approval in {}. (d)eny?"
 
279
                message = "Approval in {0}. (d)eny?"
272
280
            else:
273
 
                message = "Denial in {}. (a)pprove?"
274
 
            message = message.format(str(timer).rsplit(".", 1)[0])
 
281
                message = "Denial in {0}. (a)pprove?"
 
282
            message = message.format(unicode(timer).rsplit(".", 1)[0])
275
283
            self.using_timer(True)
276
284
        elif self.properties["LastCheckerStatus"] != 0:
277
285
            # When checker has failed, show timer until client expires
284
292
                timer = max(expires - datetime.datetime.utcnow(),
285
293
                            datetime.timedelta())
286
294
            message = ('A checker has failed! Time until client'
287
 
                       ' gets disabled: {}'
288
 
                       .format(str(timer).rsplit(".", 1)[0]))
 
295
                       ' gets disabled: {0}'
 
296
                       .format(unicode(timer).rsplit(".", 1)[0]))
289
297
            self.using_timer(True)
290
298
        else:
291
299
            message = "enabled"
292
300
            self.using_timer(False)
293
 
        self._text = "{}{}".format(base, message)
 
301
        self._text = "{0}{1}".format(base, message)
294
302
        
295
303
        if not urwid.supports_unicode():
296
304
            self._text = self._text.encode("ascii", "replace")
309
317
            self.update_hook()
310
318
    
311
319
    def update_timer(self):
312
 
        """called by GObject. Will indefinitely loop until
313
 
        GObject.source_remove() on tag is called"""
 
320
        """called by gobject. Will indefinitely loop until
 
321
        gobject.source_remove() on tag is called"""
314
322
        self.update()
315
323
        return True             # Keep calling this
316
324
    
317
325
    def delete(self, **kwargs):
318
326
        if self._update_timer_callback_tag is not None:
319
 
            GObject.source_remove(self._update_timer_callback_tag)
 
327
            gobject.source_remove(self._update_timer_callback_tag)
320
328
            self._update_timer_callback_tag = None
321
329
        for match in self.match_objects:
322
330
            match.remove()
335
343
        """Handle keys.
336
344
        This overrides the method from urwid.FlowWidget"""
337
345
        if key == "+":
338
 
            self.proxy.Set(client_interface, "Enabled",
339
 
                           dbus.Boolean(True), ignore_reply = True,
340
 
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
346
            self.proxy.Enable(dbus_interface = client_interface,
 
347
                              ignore_reply=True)
341
348
        elif key == "-":
342
 
            self.proxy.Set(client_interface, "Enabled", False,
343
 
                           ignore_reply = True,
344
 
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
349
            self.proxy.Disable(dbus_interface = client_interface,
 
350
                               ignore_reply=True)
345
351
        elif key == "a":
346
352
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
347
353
                               dbus_interface = client_interface,
355
361
                                                  .object_path,
356
362
                                                  ignore_reply=True)
357
363
        elif key == "s":
358
 
            self.proxy.Set(client_interface, "CheckerRunning",
359
 
                           dbus.Boolean(True), ignore_reply = True,
360
 
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
364
            self.proxy.StartChecker(dbus_interface = client_interface,
 
365
                                    ignore_reply=True)
361
366
        elif key == "S":
362
 
            self.proxy.Set(client_interface, "CheckerRunning",
363
 
                           dbus.Boolean(False), ignore_reply = True,
364
 
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
367
            self.proxy.StopChecker(dbus_interface = client_interface,
 
368
                                   ignore_reply=True)
365
369
        elif key == "C":
366
370
            self.proxy.CheckedOK(dbus_interface = client_interface,
367
371
                                 ignore_reply=True)
375
379
        else:
376
380
            return key
377
381
    
378
 
    def properties_changed(self, interface, properties, invalidated):
379
 
        """Call self.update() if any properties changed.
 
382
    def property_changed(self, property=None, **kwargs):
 
383
        """Call self.update() if old value is not new value.
380
384
        This overrides the method from MandosClientPropertyCache"""
381
 
        old_values = { key: self.properties.get(key)
382
 
                       for key in properties.keys() }
383
 
        super(MandosClientWidget, self).properties_changed(
384
 
            interface, properties, invalidated)
385
 
        if any(old_values[key] != self.properties.get(key)
386
 
               for key in old_values):
 
385
        property_name = unicode(property)
 
386
        old_value = self.properties.get(property_name)
 
387
        super(MandosClientWidget, self).property_changed(
 
388
            property=property, **kwargs)
 
389
        if self.properties.get(property_name) != old_value:
387
390
            self.update()
388
391
 
389
392
 
403
406
    """This is the entire user interface - the whole screen
404
407
    with boxes, lists of client widgets, etc.
405
408
    """
406
 
    def __init__(self, max_log_length=1000, log_level=1):
 
409
    def __init__(self, max_log_length=1000):
407
410
        DBusGMainLoop(set_as_default=True)
408
411
        
409
412
        self.screen = urwid.curses_display.Screen()
412
415
                ("normal",
413
416
                 "default", "default", None),
414
417
                ("bold",
415
 
                 "bold", "default", "bold"),
 
418
                 "default", "default", "bold"),
416
419
                ("underline-blink",
417
 
                 "underline,blink", "default", "underline,blink"),
 
420
                 "default", "default", "underline"),
418
421
                ("standout",
419
 
                 "standout", "default", "standout"),
 
422
                 "default", "default", "standout"),
420
423
                ("bold-underline-blink",
421
 
                 "bold,underline,blink", "default", "bold,underline,blink"),
 
424
                 "default", "default", ("bold", "underline")),
422
425
                ("bold-standout",
423
 
                 "bold,standout", "default", "bold,standout"),
 
426
                 "default", "default", ("bold", "standout")),
424
427
                ("underline-blink-standout",
425
 
                 "underline,blink,standout", "default",
426
 
                 "underline,blink,standout"),
 
428
                 "default", "default", ("underline", "standout")),
427
429
                ("bold-underline-blink-standout",
428
 
                 "bold,underline,blink,standout", "default",
429
 
                 "bold,underline,blink,standout"),
 
430
                 "default", "default", ("bold", "underline",
 
431
                                          "standout")),
430
432
                ))
431
433
        
432
434
        if urwid.supports_unicode():
447
449
        self.log = []
448
450
        self.max_log_length = max_log_length
449
451
        
450
 
        self.log_level = log_level
451
 
        
452
452
        # We keep a reference to the log widget so we can remove it
453
453
        # from the ListWalker without it getting destroyed
454
454
        self.logbox = ConstrainedListBox(self.log)
465
465
                              "q: Quit  ?: Help"))
466
466
        
467
467
        self.busname = domain + '.Mandos'
468
 
        self.main_loop = GObject.MainLoop()
 
468
        self.main_loop = gobject.MainLoop()
469
469
    
470
470
    def client_not_found(self, fingerprint, address):
471
 
        self.log_message("Client with address {} and fingerprint {}"
472
 
                         " could not be found"
 
471
        self.log_message("Client with address {0} and fingerprint"
 
472
                         " {1} could not be found"
473
473
                         .format(address, fingerprint))
474
474
    
475
475
    def rebuild(self):
488
488
            self.uilist.append(self.logbox)
489
489
        self.topwidget = urwid.Pile(self.uilist)
490
490
    
491
 
    def log_message(self, message, level=1):
492
 
        """Log message formatted with timestamp"""
493
 
        if level < self.log_level:
494
 
            return
 
491
    def log_message(self, message):
495
492
        timestamp = datetime.datetime.now().isoformat()
496
 
        self.log_message_raw("{}: {}".format(timestamp, message),
497
 
                             level=level)
 
493
        self.log_message_raw(timestamp + ": " + message)
498
494
    
499
 
    def log_message_raw(self, markup, level=1):
 
495
    def log_message_raw(self, markup):
500
496
        """Add a log message to the log buffer."""
501
 
        if level < self.log_level:
502
 
            return
503
497
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
504
498
        if (self.max_log_length
505
499
            and len(self.log) > self.max_log_length):
512
506
        """Toggle visibility of the log buffer."""
513
507
        self.log_visible = not self.log_visible
514
508
        self.rebuild()
515
 
        self.log_message("Log visibility changed to: {}"
516
 
                         .format(self.log_visible), level=0)
 
509
        #self.log_message("Log visibility changed to: "
 
510
        #                 + unicode(self.log_visible))
517
511
    
518
512
    def change_log_display(self):
519
513
        """Change type of log display.
524
518
            self.log_wrap = "clip"
525
519
        for textwidget in self.log:
526
520
            textwidget.set_wrap_mode(self.log_wrap)
527
 
        self.log_message("Wrap mode: {}".format(self.log_wrap),
528
 
                         level=0)
 
521
        #self.log_message("Wrap mode: " + self.log_wrap)
529
522
    
530
 
    def find_and_remove_client(self, path, interfaces):
 
523
    def find_and_remove_client(self, path, name):
531
524
        """Find a client by its object path and remove it.
532
525
        
533
 
        This is connected to the InterfacesRemoved signal from the
 
526
        This is connected to the ClientRemoved signal from the
534
527
        Mandos server object."""
535
 
        if client_interface not in interfaces:
536
 
            # Not a Mandos client object; ignore
537
 
            return
538
528
        try:
539
529
            client = self.clients_dict[path]
540
530
        except KeyError:
541
531
            # not found?
542
 
            self.log_message("Unknown client {!r} removed"
543
 
                             .format(path))
 
532
            self.log_message("Unknown client {0!r} ({1!r}) removed"
 
533
                             .format(name, path))
544
534
            return
545
535
        client.delete()
546
536
    
547
 
    def add_new_client(self, path, ifs_and_props):
548
 
        """Find a client by its object path and remove it.
549
 
        
550
 
        This is connected to the InterfacesAdded signal from the
551
 
        Mandos server object.
552
 
        """
553
 
        if client_interface not in ifs_and_props:
554
 
            # Not a Mandos client object; ignore
555
 
            return
 
537
    def add_new_client(self, path):
556
538
        client_proxy_object = self.bus.get_object(self.busname, path)
557
539
        self.add_client(MandosClientWidget(server_proxy_object
558
540
                                           =self.mandos_serv,
563
545
                                           delete_hook
564
546
                                           =self.remove_client,
565
547
                                           logger
566
 
                                           =self.log_message,
567
 
                                           properties
568
 
                                           = dict(ifs_and_props[
569
 
                                               client_interface])),
 
548
                                           =self.log_message),
570
549
                        path=path)
571
550
    
572
551
    def add_client(self, client, path=None):
574
553
        if path is None:
575
554
            path = client.proxy.object_path
576
555
        self.clients_dict[path] = client
577
 
        self.clients.sort(key=lambda c: c.properties["Name"])
 
556
        self.clients.sort(None, lambda c: c.properties["Name"])
578
557
        self.refresh()
579
558
    
580
559
    def remove_client(self, client, path=None):
582
561
        if path is None:
583
562
            path = client.proxy.object_path
584
563
        del self.clients_dict[path]
 
564
        if not self.clients_dict:
 
565
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
566
            # is completely emptied, we need to recreate it.
 
567
            self.clients = urwid.SimpleListWalker([])
 
568
            self.rebuild()
585
569
        self.refresh()
586
570
    
587
571
    def refresh(self):
600
584
        try:
601
585
            mandos_clients = (self.mandos_serv
602
586
                              .GetAllClientsWithProperties())
603
 
            if not mandos_clients:
604
 
                self.log_message_raw(("bold", "Note: Server has no clients."))
605
587
        except dbus.exceptions.DBusException:
606
 
            self.log_message_raw(("bold", "Note: No Mandos server running."))
607
588
            mandos_clients = dbus.Dictionary()
608
589
        
609
590
        (self.mandos_serv
610
 
         .connect_to_signal("InterfacesRemoved",
 
591
         .connect_to_signal("ClientRemoved",
611
592
                            self.find_and_remove_client,
612
 
                            dbus_interface
613
 
                            = dbus.OBJECT_MANAGER_IFACE,
 
593
                            dbus_interface=server_interface,
614
594
                            byte_arrays=True))
615
595
        (self.mandos_serv
616
 
         .connect_to_signal("InterfacesAdded",
 
596
         .connect_to_signal("ClientAdded",
617
597
                            self.add_new_client,
618
 
                            dbus_interface
619
 
                            = dbus.OBJECT_MANAGER_IFACE,
 
598
                            dbus_interface=server_interface,
620
599
                            byte_arrays=True))
621
600
        (self.mandos_serv
622
601
         .connect_to_signal("ClientNotFound",
623
602
                            self.client_not_found,
624
603
                            dbus_interface=server_interface,
625
604
                            byte_arrays=True))
626
 
        for path, client in mandos_clients.items():
 
605
        for path, client in mandos_clients.iteritems():
627
606
            client_proxy_object = self.bus.get_object(self.busname,
628
607
                                                      path)
629
608
            self.add_client(MandosClientWidget(server_proxy_object
640
619
                            path=path)
641
620
        
642
621
        self.refresh()
643
 
        self._input_callback_tag = (GObject.io_add_watch
 
622
        self._input_callback_tag = (gobject.io_add_watch
644
623
                                    (sys.stdin.fileno(),
645
 
                                     GObject.IO_IN,
 
624
                                     gobject.IO_IN,
646
625
                                     self.process_input))
647
626
        self.main_loop.run()
648
627
        # Main loop has finished, we should close everything now
649
 
        GObject.source_remove(self._input_callback_tag)
 
628
        gobject.source_remove(self._input_callback_tag)
650
629
        self.screen.stop()
651
630
    
652
631
    def stop(self):
676
655
            elif key == "window resize":
677
656
                self.size = self.screen.get_cols_rows()
678
657
                self.refresh()
679
 
            elif key == "ctrl l":
680
 
                self.screen.clear()
 
658
            elif key == "\f":  # Ctrl-L
681
659
                self.refresh()
682
660
            elif key == "l" or key == "D":
683
661
                self.toggle_log_display()
695
673
                                            "?: Help",
696
674
                                            "l: Log window toggle",
697
675
                                            "TAB: Switch window",
698
 
                                            "w: Wrap (log lines)",
699
 
                                            "v: Toggle verbose log",
700
 
                                            ))))
 
676
                                            "w: Wrap (log)"))))
701
677
                self.log_message_raw(("bold",
702
678
                                      "  "
703
679
                                      .join(("Clients:",
716
692
                else:
717
693
                    self.topwidget.set_focus(self.logbox)
718
694
                self.refresh()
719
 
            elif key == "v":
720
 
                if self.log_level == 0:
721
 
                    self.log_level = 1
722
 
                    self.log_message("Verbose mode: Off")
723
 
                else:
724
 
                    self.log_level = 0
725
 
                    self.log_message("Verbose mode: On")
726
695
            #elif (key == "end" or key == "meta >" or key == "G"
727
696
            #      or key == ">"):
728
697
            #    pass            # xxx end-of-buffer
751
720
    ui.run()
752
721
except KeyboardInterrupt:
753
722
    ui.screen.stop()
754
 
except Exception as e:
755
 
    ui.log_message(str(e))
 
723
except Exception, e:
 
724
    ui.log_message(unicode(e))
756
725
    ui.screen.stop()
757
726
    raise