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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
 
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# Copyright © 2009-2012 Teddy Hogeborn
 
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# Copyright © 2009-2012 Björn Påhlsson
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# 
9
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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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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
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import datetime
37
36
 
39
38
import urwid
40
39
 
41
40
from dbus.mainloop.glib import DBusGMainLoop
42
 
from gi.repository import GLib
 
41
import gobject
43
42
 
44
43
import dbus
45
44
 
 
45
import UserList
 
46
 
46
47
import locale
47
48
 
48
 
if sys.version_info.major == 2:
49
 
    str = unicode
50
 
 
51
49
locale.setlocale(locale.LC_ALL, '')
52
50
 
53
51
import logging
57
55
domain = 'se.recompile'
58
56
server_interface = domain + '.Mandos'
59
57
client_interface = domain + '.Mandos.Client'
60
 
version = "1.7.6"
61
 
 
62
 
try:
63
 
    dbus.OBJECT_MANAGER_IFACE
64
 
except AttributeError:
65
 
    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)
66
67
 
67
68
def isoformat_to_datetime(iso):
68
69
    "Parse an ISO 8601 date string to a datetime.datetime()"
89
90
        self.proxy = proxy_object # Mandos Client proxy object
90
91
        self.properties = dict() if properties is None else properties
91
92
        self.property_changed_match = (
92
 
            self.proxy.connect_to_signal("PropertiesChanged",
93
 
                                         self.properties_changed,
94
 
                                         dbus.PROPERTIES_IFACE,
 
93
            self.proxy.connect_to_signal("PropertyChanged",
 
94
                                         self._property_changed,
 
95
                                         client_interface,
95
96
                                         byte_arrays=True))
96
97
        
97
98
        if properties is None:
102
103
        
103
104
        super(MandosClientPropertyCache, self).__init__(**kwargs)
104
105
    
105
 
    def properties_changed(self, interface, properties, invalidated):
106
 
        """This is called whenever we get a PropertiesChanged signal
107
 
        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.
108
113
        """
109
114
        # Update properties dict with new value
110
 
        if interface == client_interface:
111
 
            self.properties.update(properties)
 
115
        self.properties[property] = value
112
116
    
113
117
    def delete(self):
114
118
        self.property_changed_match.remove()
160
164
                                         self.rejected,
161
165
                                         client_interface,
162
166
                                         byte_arrays=True))
163
 
        self.logger('Created client {}'
164
 
                    .format(self.properties["Name"]), level=0)
 
167
        #self.logger('Created client {0}'
 
168
        #            .format(self.properties["Name"]))
165
169
    
166
170
    def using_timer(self, flag):
167
171
        """Call this method with True or False when timer should be
169
173
        """
170
174
        if flag and self._update_timer_callback_tag is None:
171
175
            # Will update the shown timer value every second
172
 
            self._update_timer_callback_tag = (GLib.timeout_add
 
176
            self._update_timer_callback_tag = (gobject.timeout_add
173
177
                                               (1000,
174
178
                                                self.update_timer))
175
179
        elif not (flag or self._update_timer_callback_tag is None):
176
 
            GLib.source_remove(self._update_timer_callback_tag)
 
180
            gobject.source_remove(self._update_timer_callback_tag)
177
181
            self._update_timer_callback_tag = None
178
182
    
179
183
    def checker_completed(self, exitstatus, condition, command):
180
184
        if exitstatus == 0:
181
 
            self.logger('Checker for client {} (command "{}")'
182
 
                        ' succeeded'.format(self.properties["Name"],
183
 
                                            command), level=0)
184
185
            self.update()
185
186
            return
186
187
        # Checker failed
187
188
        if os.WIFEXITED(condition):
188
 
            self.logger('Checker for client {} (command "{}") failed'
189
 
                        ' with exit code {}'
 
189
            self.logger('Checker for client {0} (command "{1}")'
 
190
                        ' failed with exit code {2}'
190
191
                        .format(self.properties["Name"], command,
191
192
                                os.WEXITSTATUS(condition)))
192
193
        elif os.WIFSIGNALED(condition):
193
 
            self.logger('Checker for client {} (command "{}") was'
194
 
                        ' killed by signal {}'
 
194
            self.logger('Checker for client {0} (command "{1}") was'
 
195
                        ' killed by signal {2}'
195
196
                        .format(self.properties["Name"], command,
196
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"]))
197
206
        self.update()
198
207
    
199
208
    def checker_started(self, command):
200
 
        """Server signals that a checker started."""
201
 
        self.logger('Client {} started checker "{}"'
202
 
                    .format(self.properties["Name"],
203
 
                            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
204
215
    
205
216
    def got_secret(self):
206
 
        self.logger('Client {} received its secret'
 
217
        self.logger('Client {0} received its secret'
207
218
                    .format(self.properties["Name"]))
208
219
    
209
220
    def need_approval(self, timeout, default):
210
221
        if not default:
211
 
            message = 'Client {} needs approval within {} seconds'
 
222
            message = 'Client {0} needs approval within {1} seconds'
212
223
        else:
213
 
            message = 'Client {} will get its secret in {} seconds'
 
224
            message = 'Client {0} will get its secret in {1} seconds'
214
225
        self.logger(message.format(self.properties["Name"],
215
226
                                   timeout/1000))
216
227
    
217
228
    def rejected(self, reason):
218
 
        self.logger('Client {} was rejected; reason: {}'
 
229
        self.logger('Client {0} was rejected; reason: {1}'
219
230
                    .format(self.properties["Name"], reason))
220
231
    
221
232
    def selectable(self):
265
276
            else:
266
277
                timer = datetime.timedelta()
267
278
            if self.properties["ApprovedByDefault"]:
268
 
                message = "Approval in {}. (d)eny?"
 
279
                message = "Approval in {0}. (d)eny?"
269
280
            else:
270
 
                message = "Denial in {}. (a)pprove?"
271
 
            message = message.format(str(timer).rsplit(".", 1)[0])
 
281
                message = "Denial in {0}. (a)pprove?"
 
282
            message = message.format(unicode(timer).rsplit(".", 1)[0])
272
283
            self.using_timer(True)
273
284
        elif self.properties["LastCheckerStatus"] != 0:
274
285
            # When checker has failed, show timer until client expires
281
292
                timer = max(expires - datetime.datetime.utcnow(),
282
293
                            datetime.timedelta())
283
294
            message = ('A checker has failed! Time until client'
284
 
                       ' gets disabled: {}'
285
 
                       .format(str(timer).rsplit(".", 1)[0]))
 
295
                       ' gets disabled: {0}'
 
296
                       .format(unicode(timer).rsplit(".", 1)[0]))
286
297
            self.using_timer(True)
287
298
        else:
288
299
            message = "enabled"
289
300
            self.using_timer(False)
290
 
        self._text = "{}{}".format(base, message)
 
301
        self._text = "{0}{1}".format(base, message)
291
302
        
292
303
        if not urwid.supports_unicode():
293
304
            self._text = self._text.encode("ascii", "replace")
306
317
            self.update_hook()
307
318
    
308
319
    def update_timer(self):
309
 
        """called by GLib. Will indefinitely loop until
310
 
        GLib.source_remove() on tag is called
311
 
        """
 
320
        """called by gobject. Will indefinitely loop until
 
321
        gobject.source_remove() on tag is called"""
312
322
        self.update()
313
323
        return True             # Keep calling this
314
324
    
315
325
    def delete(self, **kwargs):
316
326
        if self._update_timer_callback_tag is not None:
317
 
            GLib.source_remove(self._update_timer_callback_tag)
 
327
            gobject.source_remove(self._update_timer_callback_tag)
318
328
            self._update_timer_callback_tag = None
319
329
        for match in self.match_objects:
320
330
            match.remove()
333
343
        """Handle keys.
334
344
        This overrides the method from urwid.FlowWidget"""
335
345
        if key == "+":
336
 
            self.proxy.Set(client_interface, "Enabled",
337
 
                           dbus.Boolean(True), ignore_reply = True,
338
 
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
346
            self.proxy.Enable(dbus_interface = client_interface,
 
347
                              ignore_reply=True)
339
348
        elif key == "-":
340
 
            self.proxy.Set(client_interface, "Enabled", False,
341
 
                           ignore_reply = True,
342
 
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
349
            self.proxy.Disable(dbus_interface = client_interface,
 
350
                               ignore_reply=True)
343
351
        elif key == "a":
344
352
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
345
353
                               dbus_interface = client_interface,
353
361
                                                  .object_path,
354
362
                                                  ignore_reply=True)
355
363
        elif key == "s":
356
 
            self.proxy.Set(client_interface, "CheckerRunning",
357
 
                           dbus.Boolean(True), ignore_reply = True,
358
 
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
364
            self.proxy.StartChecker(dbus_interface = client_interface,
 
365
                                    ignore_reply=True)
359
366
        elif key == "S":
360
 
            self.proxy.Set(client_interface, "CheckerRunning",
361
 
                           dbus.Boolean(False), ignore_reply = True,
362
 
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
367
            self.proxy.StopChecker(dbus_interface = client_interface,
 
368
                                   ignore_reply=True)
363
369
        elif key == "C":
364
370
            self.proxy.CheckedOK(dbus_interface = client_interface,
365
371
                                 ignore_reply=True)
373
379
        else:
374
380
            return key
375
381
    
376
 
    def properties_changed(self, interface, properties, invalidated):
377
 
        """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.
378
384
        This overrides the method from MandosClientPropertyCache"""
379
 
        old_values = { key: self.properties.get(key)
380
 
                       for key in properties.keys() }
381
 
        super(MandosClientWidget, self).properties_changed(
382
 
            interface, properties, invalidated)
383
 
        if any(old_values[key] != self.properties.get(key)
384
 
               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:
385
390
            self.update()
386
391
 
387
392
 
401
406
    """This is the entire user interface - the whole screen
402
407
    with boxes, lists of client widgets, etc.
403
408
    """
404
 
    def __init__(self, max_log_length=1000, log_level=1):
 
409
    def __init__(self, max_log_length=1000):
405
410
        DBusGMainLoop(set_as_default=True)
406
411
        
407
412
        self.screen = urwid.curses_display.Screen()
410
415
                ("normal",
411
416
                 "default", "default", None),
412
417
                ("bold",
413
 
                 "bold", "default", "bold"),
 
418
                 "default", "default", "bold"),
414
419
                ("underline-blink",
415
 
                 "underline,blink", "default", "underline,blink"),
 
420
                 "default", "default", "underline"),
416
421
                ("standout",
417
 
                 "standout", "default", "standout"),
 
422
                 "default", "default", "standout"),
418
423
                ("bold-underline-blink",
419
 
                 "bold,underline,blink", "default", "bold,underline,blink"),
 
424
                 "default", "default", ("bold", "underline")),
420
425
                ("bold-standout",
421
 
                 "bold,standout", "default", "bold,standout"),
 
426
                 "default", "default", ("bold", "standout")),
422
427
                ("underline-blink-standout",
423
 
                 "underline,blink,standout", "default",
424
 
                 "underline,blink,standout"),
 
428
                 "default", "default", ("underline", "standout")),
425
429
                ("bold-underline-blink-standout",
426
 
                 "bold,underline,blink,standout", "default",
427
 
                 "bold,underline,blink,standout"),
 
430
                 "default", "default", ("bold", "underline",
 
431
                                          "standout")),
428
432
                ))
429
433
        
430
434
        if urwid.supports_unicode():
445
449
        self.log = []
446
450
        self.max_log_length = max_log_length
447
451
        
448
 
        self.log_level = log_level
449
 
        
450
452
        # We keep a reference to the log widget so we can remove it
451
453
        # from the ListWalker without it getting destroyed
452
454
        self.logbox = ConstrainedListBox(self.log)
463
465
                              "q: Quit  ?: Help"))
464
466
        
465
467
        self.busname = domain + '.Mandos'
466
 
        self.main_loop = GLib.MainLoop()
 
468
        self.main_loop = gobject.MainLoop()
467
469
    
468
470
    def client_not_found(self, fingerprint, address):
469
 
        self.log_message("Client with address {} and fingerprint {}"
470
 
                         " could not be found"
 
471
        self.log_message("Client with address {0} and fingerprint"
 
472
                         " {1} could not be found"
471
473
                         .format(address, fingerprint))
472
474
    
473
475
    def rebuild(self):
486
488
            self.uilist.append(self.logbox)
487
489
        self.topwidget = urwid.Pile(self.uilist)
488
490
    
489
 
    def log_message(self, message, level=1):
490
 
        """Log message formatted with timestamp"""
491
 
        if level < self.log_level:
492
 
            return
 
491
    def log_message(self, message):
493
492
        timestamp = datetime.datetime.now().isoformat()
494
 
        self.log_message_raw("{}: {}".format(timestamp, message),
495
 
                             level=level)
 
493
        self.log_message_raw(timestamp + ": " + message)
496
494
    
497
 
    def log_message_raw(self, markup, level=1):
 
495
    def log_message_raw(self, markup):
498
496
        """Add a log message to the log buffer."""
499
 
        if level < self.log_level:
500
 
            return
501
497
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
502
498
        if (self.max_log_length
503
499
            and len(self.log) > self.max_log_length):
510
506
        """Toggle visibility of the log buffer."""
511
507
        self.log_visible = not self.log_visible
512
508
        self.rebuild()
513
 
        self.log_message("Log visibility changed to: {}"
514
 
                         .format(self.log_visible), level=0)
 
509
        #self.log_message("Log visibility changed to: "
 
510
        #                 + unicode(self.log_visible))
515
511
    
516
512
    def change_log_display(self):
517
513
        """Change type of log display.
522
518
            self.log_wrap = "clip"
523
519
        for textwidget in self.log:
524
520
            textwidget.set_wrap_mode(self.log_wrap)
525
 
        self.log_message("Wrap mode: {}".format(self.log_wrap),
526
 
                         level=0)
 
521
        #self.log_message("Wrap mode: " + self.log_wrap)
527
522
    
528
 
    def find_and_remove_client(self, path, interfaces):
 
523
    def find_and_remove_client(self, path, name):
529
524
        """Find a client by its object path and remove it.
530
525
        
531
 
        This is connected to the InterfacesRemoved signal from the
 
526
        This is connected to the ClientRemoved signal from the
532
527
        Mandos server object."""
533
 
        if client_interface not in interfaces:
534
 
            # Not a Mandos client object; ignore
535
 
            return
536
528
        try:
537
529
            client = self.clients_dict[path]
538
530
        except KeyError:
539
531
            # not found?
540
 
            self.log_message("Unknown client {!r} removed"
541
 
                             .format(path))
 
532
            self.log_message("Unknown client {0!r} ({1!r}) removed"
 
533
                             .format(name, path))
542
534
            return
543
535
        client.delete()
544
536
    
545
 
    def add_new_client(self, path, ifs_and_props):
546
 
        """Find a client by its object path and remove it.
547
 
        
548
 
        This is connected to the InterfacesAdded signal from the
549
 
        Mandos server object.
550
 
        """
551
 
        if client_interface not in ifs_and_props:
552
 
            # Not a Mandos client object; ignore
553
 
            return
 
537
    def add_new_client(self, path):
554
538
        client_proxy_object = self.bus.get_object(self.busname, path)
555
539
        self.add_client(MandosClientWidget(server_proxy_object
556
540
                                           =self.mandos_serv,
561
545
                                           delete_hook
562
546
                                           =self.remove_client,
563
547
                                           logger
564
 
                                           =self.log_message,
565
 
                                           properties
566
 
                                           = dict(ifs_and_props[
567
 
                                               client_interface])),
 
548
                                           =self.log_message),
568
549
                        path=path)
569
550
    
570
551
    def add_client(self, client, path=None):
572
553
        if path is None:
573
554
            path = client.proxy.object_path
574
555
        self.clients_dict[path] = client
575
 
        self.clients.sort(key=lambda c: c.properties["Name"])
 
556
        self.clients.sort(None, lambda c: c.properties["Name"])
576
557
        self.refresh()
577
558
    
578
559
    def remove_client(self, client, path=None):
580
561
        if path is None:
581
562
            path = client.proxy.object_path
582
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()
583
569
        self.refresh()
584
570
    
585
571
    def refresh(self):
598
584
        try:
599
585
            mandos_clients = (self.mandos_serv
600
586
                              .GetAllClientsWithProperties())
601
 
            if not mandos_clients:
602
 
                self.log_message_raw(("bold", "Note: Server has no clients."))
603
587
        except dbus.exceptions.DBusException:
604
 
            self.log_message_raw(("bold", "Note: No Mandos server running."))
605
588
            mandos_clients = dbus.Dictionary()
606
589
        
607
590
        (self.mandos_serv
608
 
         .connect_to_signal("InterfacesRemoved",
 
591
         .connect_to_signal("ClientRemoved",
609
592
                            self.find_and_remove_client,
610
 
                            dbus_interface
611
 
                            = dbus.OBJECT_MANAGER_IFACE,
 
593
                            dbus_interface=server_interface,
612
594
                            byte_arrays=True))
613
595
        (self.mandos_serv
614
 
         .connect_to_signal("InterfacesAdded",
 
596
         .connect_to_signal("ClientAdded",
615
597
                            self.add_new_client,
616
 
                            dbus_interface
617
 
                            = dbus.OBJECT_MANAGER_IFACE,
 
598
                            dbus_interface=server_interface,
618
599
                            byte_arrays=True))
619
600
        (self.mandos_serv
620
601
         .connect_to_signal("ClientNotFound",
621
602
                            self.client_not_found,
622
603
                            dbus_interface=server_interface,
623
604
                            byte_arrays=True))
624
 
        for path, client in mandos_clients.items():
 
605
        for path, client in mandos_clients.iteritems():
625
606
            client_proxy_object = self.bus.get_object(self.busname,
626
607
                                                      path)
627
608
            self.add_client(MandosClientWidget(server_proxy_object
638
619
                            path=path)
639
620
        
640
621
        self.refresh()
641
 
        self._input_callback_tag = (GLib.io_add_watch
 
622
        self._input_callback_tag = (gobject.io_add_watch
642
623
                                    (sys.stdin.fileno(),
643
 
                                     GLib.IO_IN,
 
624
                                     gobject.IO_IN,
644
625
                                     self.process_input))
645
626
        self.main_loop.run()
646
627
        # Main loop has finished, we should close everything now
647
 
        GLib.source_remove(self._input_callback_tag)
 
628
        gobject.source_remove(self._input_callback_tag)
648
629
        self.screen.stop()
649
630
    
650
631
    def stop(self):
674
655
            elif key == "window resize":
675
656
                self.size = self.screen.get_cols_rows()
676
657
                self.refresh()
677
 
            elif key == "ctrl l":
678
 
                self.screen.clear()
 
658
            elif key == "\f":  # Ctrl-L
679
659
                self.refresh()
680
660
            elif key == "l" or key == "D":
681
661
                self.toggle_log_display()
693
673
                                            "?: Help",
694
674
                                            "l: Log window toggle",
695
675
                                            "TAB: Switch window",
696
 
                                            "w: Wrap (log lines)",
697
 
                                            "v: Toggle verbose log",
698
 
                                            ))))
 
676
                                            "w: Wrap (log)"))))
699
677
                self.log_message_raw(("bold",
700
678
                                      "  "
701
679
                                      .join(("Clients:",
714
692
                else:
715
693
                    self.topwidget.set_focus(self.logbox)
716
694
                self.refresh()
717
 
            elif key == "v":
718
 
                if self.log_level == 0:
719
 
                    self.log_level = 1
720
 
                    self.log_message("Verbose mode: Off")
721
 
                else:
722
 
                    self.log_level = 0
723
 
                    self.log_message("Verbose mode: On")
724
695
            #elif (key == "end" or key == "meta >" or key == "G"
725
696
            #      or key == ">"):
726
697
            #    pass            # xxx end-of-buffer
749
720
    ui.run()
750
721
except KeyboardInterrupt:
751
722
    ui.screen.stop()
752
 
except Exception as e:
753
 
    ui.log_message(str(e))
 
723
except Exception, e:
 
724
    ui.log_message(unicode(e))
754
725
    ui.screen.stop()
755
726
    raise