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  • Committer: Teddy Hogeborn
  • Date: 2019-09-03 18:52:20 UTC
  • mfrom: (237.7.724 trunk)
  • Revision ID: teddy@recompile.se-20190903185220-lsldutcamh5es7pv
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mandos-monitor
1
 
#!/usr/bin/python3 -bbI
 
1
#!/usr/bin/python3 -bb
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos Monitor - Control and monitor the Mandos server
35
35
import os
36
36
import warnings
37
37
import datetime
38
 
import locale
39
 
import logging
40
38
 
41
39
import urwid.curses_display
42
40
import urwid
46
44
 
47
45
import dbus
48
46
 
 
47
import locale
 
48
 
 
49
import logging
 
50
 
49
51
if sys.version_info.major == 2:
50
 
    __metaclass__ = type
51
52
    str = unicode
52
53
 
53
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
54
 
logging.basicConfig(level="NOTSET", # Show all messages
55
 
                    format="%(message)s") # Show basic log messages
56
 
 
57
 
logging.captureWarnings(True)   # Show warnings via the logging system
58
 
 
59
 
locale.setlocale(locale.LC_ALL, "")
60
 
 
61
 
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
 
54
locale.setlocale(locale.LC_ALL, '')
 
55
 
 
56
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
62
57
 
63
58
# Some useful constants
64
 
domain = "se.recompile"
65
 
server_interface = domain + ".Mandos"
66
 
client_interface = domain + ".Mandos.Client"
67
 
version = "1.8.14"
 
59
domain = 'se.recompile'
 
60
server_interface = domain + '.Mandos'
 
61
client_interface = domain + '.Mandos.Client'
 
62
version = "1.8.8"
68
63
 
69
64
try:
70
65
    dbus.OBJECT_MANAGER_IFACE
89
84
                             int(fraction*1000000))  # Microseconds
90
85
 
91
86
 
92
 
class MandosClientPropertyCache:
 
87
class MandosClientPropertyCache(object):
93
88
    """This wraps a Mandos Client D-Bus proxy object, caches the
94
89
    properties and calls a hook function when any of them are
95
90
    changed.
127
122
    """
128
123
 
129
124
    def __init__(self, server_proxy_object=None, update_hook=None,
130
 
                 delete_hook=None, **kwargs):
 
125
                 delete_hook=None, logger=None, **kwargs):
131
126
        # Called on update
132
127
        self.update_hook = update_hook
133
128
        # Called on delete
134
129
        self.delete_hook = delete_hook
135
130
        # Mandos Server proxy object
136
131
        self.server_proxy_object = server_proxy_object
 
132
        # Logger
 
133
        self.logger = logger
137
134
 
138
135
        self._update_timer_callback_tag = None
139
136
 
166
163
                                         self.rejected,
167
164
                                         client_interface,
168
165
                                         byte_arrays=True))
169
 
        log.debug("Created client %s", self.properties["Name"])
 
166
        self.logger('Created client {}'
 
167
                    .format(self.properties["Name"]), level=0)
170
168
 
171
169
    def using_timer(self, flag):
172
170
        """Call this method with True or False when timer should be
174
172
        """
175
173
        if flag and self._update_timer_callback_tag is None:
176
174
            # Will update the shown timer value every second
177
 
            self._update_timer_callback_tag = (
178
 
                GLib.timeout_add(1000,
179
 
                                 glib_safely(self.update_timer)))
 
175
            self._update_timer_callback_tag = (GLib.timeout_add
 
176
                                               (1000,
 
177
                                                self.update_timer))
180
178
        elif not (flag or self._update_timer_callback_tag is None):
181
179
            GLib.source_remove(self._update_timer_callback_tag)
182
180
            self._update_timer_callback_tag = None
183
181
 
184
182
    def checker_completed(self, exitstatus, condition, command):
185
183
        if exitstatus == 0:
186
 
            log.debug('Checker for client %s (command "%s")'
187
 
                      " succeeded", self.properties["Name"], command)
 
184
            self.logger('Checker for client {} (command "{}")'
 
185
                        ' succeeded'.format(self.properties["Name"],
 
186
                                            command), level=0)
188
187
            self.update()
189
188
            return
190
189
        # Checker failed
191
190
        if os.WIFEXITED(condition):
192
 
            log.info('Checker for client %s (command "%s") failed'
193
 
                     " with exit code %d", self.properties["Name"],
194
 
                     command, os.WEXITSTATUS(condition))
 
191
            self.logger('Checker for client {} (command "{}") failed'
 
192
                        ' with exit code {}'
 
193
                        .format(self.properties["Name"], command,
 
194
                                os.WEXITSTATUS(condition)))
195
195
        elif os.WIFSIGNALED(condition):
196
 
            log.info('Checker for client %s (command "%s") was'
197
 
                     " killed by signal %d", self.properties["Name"],
198
 
                     command, os.WTERMSIG(condition))
 
196
            self.logger('Checker for client {} (command "{}") was'
 
197
                        ' killed by signal {}'
 
198
                        .format(self.properties["Name"], command,
 
199
                                os.WTERMSIG(condition)))
199
200
        self.update()
200
201
 
201
202
    def checker_started(self, command):
202
203
        """Server signals that a checker started."""
203
 
        log.debug('Client %s started checker "%s"',
204
 
                  self.properties["Name"], command)
 
204
        self.logger('Client {} started checker "{}"'
 
205
                    .format(self.properties["Name"],
 
206
                            command), level=0)
205
207
 
206
208
    def got_secret(self):
207
 
        log.info("Client %s received its secret",
208
 
                 self.properties["Name"])
 
209
        self.logger('Client {} received its secret'
 
210
                    .format(self.properties["Name"]))
209
211
 
210
212
    def need_approval(self, timeout, default):
211
213
        if not default:
212
 
            message = "Client %s needs approval within %f seconds"
 
214
            message = 'Client {} needs approval within {} seconds'
213
215
        else:
214
 
            message = "Client %s will get its secret in %f seconds"
215
 
        log.info(message, self.properties["Name"], timeout/1000)
 
216
            message = 'Client {} will get its secret in {} seconds'
 
217
        self.logger(message.format(self.properties["Name"],
 
218
                                   timeout/1000))
216
219
 
217
220
    def rejected(self, reason):
218
 
        log.info("Client %s was rejected; reason: %s",
219
 
                 self.properties["Name"], reason)
 
221
        self.logger('Client {} was rejected; reason: {}'
 
222
                    .format(self.properties["Name"], reason))
220
223
 
221
224
    def selectable(self):
222
225
        """Make this a "selectable" widget.
248
251
        # Rebuild focus and non-focus widgets using current properties
249
252
 
250
253
        # Base part of a client. Name!
251
 
        base = "{name}: ".format(name=self.properties["Name"])
 
254
        base = '{name}: '.format(name=self.properties["Name"])
252
255
        if not self.properties["Enabled"]:
253
256
            message = "DISABLED"
254
257
            self.using_timer(False)
276
279
                timer = datetime.timedelta(0)
277
280
            else:
278
281
                expires = (datetime.datetime.strptime
279
 
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
 
282
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
280
283
                timer = max(expires - datetime.datetime.utcnow(),
281
284
                            datetime.timedelta())
282
 
            message = ("A checker has failed! Time until client"
283
 
                       " gets disabled: {}"
 
285
            message = ('A checker has failed! Time until client'
 
286
                       ' gets disabled: {}'
284
287
                       .format(str(timer).rsplit(".", 1)[0]))
285
288
            self.using_timer(True)
286
289
        else:
384
387
            self.update()
385
388
 
386
389
 
387
 
def glib_safely(func, retval=True):
388
 
    def safe_func(*args, **kwargs):
389
 
        try:
390
 
            return func(*args, **kwargs)
391
 
        except Exception:
392
 
            log.exception("")
393
 
            return retval
394
 
    return safe_func
395
 
 
396
 
 
397
390
class ConstrainedListBox(urwid.ListBox):
398
391
    """Like a normal urwid.ListBox, but will consume all "up" or
399
392
    "down" key presses, thus not allowing any containing widgets to
407
400
        return ret
408
401
 
409
402
 
410
 
class UserInterface:
 
403
class UserInterface(object):
411
404
    """This is the entire user interface - the whole screen
412
405
    with boxes, lists of client widgets, etc.
413
406
    """
414
 
    def __init__(self, max_log_length=1000):
 
407
    def __init__(self, max_log_length=1000, log_level=1):
415
408
        DBusGMainLoop(set_as_default=True)
416
409
 
417
410
        self.screen = urwid.curses_display.Screen()
454
447
        self.log = urwid.SimpleListWalker([])
455
448
        self.max_log_length = max_log_length
456
449
 
 
450
        self.log_level = log_level
 
451
 
457
452
        # We keep a reference to the log widget so we can remove it
458
453
        # from the ListWalker without it getting destroyed
459
454
        self.logbox = ConstrainedListBox(self.log)
463
458
        self.log_visible = True
464
459
        self.log_wrap = "any"
465
460
 
466
 
        self.loghandler = UILogHandler(self)
467
 
 
468
461
        self.rebuild()
469
 
        self.add_log_line(("bold",
470
 
                           "Mandos Monitor version " + version))
471
 
        self.add_log_line(("bold", "q: Quit  ?: Help"))
 
462
        self.log_message_raw(("bold",
 
463
                              "Mandos Monitor version " + version))
 
464
        self.log_message_raw(("bold",
 
465
                              "q: Quit  ?: Help"))
472
466
 
473
 
        self.busname = domain + ".Mandos"
 
467
        self.busname = domain + '.Mandos'
474
468
        self.main_loop = GLib.MainLoop()
475
469
 
476
470
    def client_not_found(self, key_id, address):
477
 
        log.info("Client with address %s and key ID %s could"
478
 
                 " not be found", address, key_id)
 
471
        self.log_message("Client with address {} and key ID {} could"
 
472
                         " not be found".format(address, key_id))
479
473
 
480
474
    def rebuild(self):
481
475
        """This rebuilds the User Interface.
492
486
            self.uilist.append(self.logbox)
493
487
        self.topwidget = urwid.Pile(self.uilist)
494
488
 
495
 
    def add_log_line(self, markup):
 
489
    def log_message(self, message, level=1):
 
490
        """Log message formatted with timestamp"""
 
491
        if level < self.log_level:
 
492
            return
 
493
        timestamp = datetime.datetime.now().isoformat()
 
494
        self.log_message_raw("{}: {}".format(timestamp, message),
 
495
                             level=level)
 
496
 
 
497
    def log_message_raw(self, markup, level=1):
 
498
        """Add a log message to the log buffer."""
 
499
        if level < self.log_level:
 
500
            return
496
501
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
497
502
        if self.max_log_length:
498
503
            if len(self.log) > self.max_log_length:
499
 
                del self.log[0:(len(self.log) - self.max_log_length)]
 
504
                del self.log[0:len(self.log)-self.max_log_length-1]
500
505
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
501
506
                              coming_from="above")
502
507
        self.refresh()
505
510
        """Toggle visibility of the log buffer."""
506
511
        self.log_visible = not self.log_visible
507
512
        self.rebuild()
508
 
        log.debug("Log visibility changed to: %s", self.log_visible)
 
513
        self.log_message("Log visibility changed to: {}"
 
514
                         .format(self.log_visible), level=0)
509
515
 
510
516
    def change_log_display(self):
511
517
        """Change type of log display.
516
522
            self.log_wrap = "clip"
517
523
        for textwidget in self.log:
518
524
            textwidget.set_wrap_mode(self.log_wrap)
519
 
        log.debug("Wrap mode: %s", self.log_wrap)
 
525
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
526
                         level=0)
520
527
 
521
528
    def find_and_remove_client(self, path, interfaces):
522
529
        """Find a client by its object path and remove it.
530
537
            client = self.clients_dict[path]
531
538
        except KeyError:
532
539
            # not found?
533
 
            log.warning("Unknown client %s removed", path)
 
540
            self.log_message("Unknown client {!r} removed"
 
541
                             .format(path))
534
542
            return
535
543
        client.delete()
536
544
 
549
557
            proxy_object=client_proxy_object,
550
558
            update_hook=self.refresh,
551
559
            delete_hook=self.remove_client,
 
560
            logger=self.log_message,
552
561
            properties=dict(ifs_and_props[client_interface])),
553
562
                        path=path)
554
563
 
574
583
 
575
584
    def run(self):
576
585
        """Start the main loop and exit when it's done."""
577
 
        log.addHandler(self.loghandler)
578
 
        self.orig_log_propagate = log.propagate
579
 
        log.propagate = False
580
 
        self.orig_log_level = log.level
581
 
        log.setLevel("INFO")
582
586
        self.bus = dbus.SystemBus()
583
587
        mandos_dbus_objc = self.bus.get_object(
584
588
            self.busname, "/", follow_name_owner_changes=True)
588
592
            mandos_clients = (self.mandos_serv
589
593
                              .GetAllClientsWithProperties())
590
594
            if not mandos_clients:
591
 
                log.warning("Note: Server has no clients.")
 
595
                self.log_message_raw(("bold",
 
596
                                      "Note: Server has no clients."))
592
597
        except dbus.exceptions.DBusException:
593
 
            log.warning("Note: No Mandos server running.")
 
598
            self.log_message_raw(("bold",
 
599
                                  "Note: No Mandos server running."))
594
600
            mandos_clients = dbus.Dictionary()
595
601
 
596
602
        (self.mandos_serv
616
622
                proxy_object=client_proxy_object,
617
623
                properties=client,
618
624
                update_hook=self.refresh,
619
 
                delete_hook=self.remove_client),
 
625
                delete_hook=self.remove_client,
 
626
                logger=self.log_message),
620
627
                            path=path)
621
628
 
622
629
        self.refresh()
624
631
            GLib.io_add_watch(
625
632
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
626
633
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
627
 
                glib_safely(self.process_input)))
 
634
                self.process_input))
628
635
        self.main_loop.run()
629
636
        # Main loop has finished, we should close everything now
630
637
        GLib.source_remove(self._input_callback_tag)
634
641
 
635
642
    def stop(self):
636
643
        self.main_loop.quit()
637
 
        log.removeHandler(self.loghandler)
638
 
        log.propagate = self.orig_log_propagate
639
644
 
640
645
    def process_input(self, source, condition):
641
646
        keys = self.screen.get_input()
674
679
                if not self.log_visible:
675
680
                    self.log_visible = True
676
681
                    self.rebuild()
677
 
                self.add_log_line(("bold",
678
 
                                   "  ".join(("q: Quit",
679
 
                                              "?: Help",
680
 
                                              "l: Log window toggle",
681
 
                                              "TAB: Switch window",
682
 
                                              "w: Wrap (log lines)",
683
 
                                              "v: Toggle verbose log",
684
 
                                   ))))
685
 
                self.add_log_line(("bold",
686
 
                                   "  ".join(("Clients:",
687
 
                                              "+: Enable",
688
 
                                              "-: Disable",
689
 
                                              "R: Remove",
690
 
                                              "s: Start new checker",
691
 
                                              "S: Stop checker",
692
 
                                              "C: Checker OK",
693
 
                                              "a: Approve",
694
 
                                              "d: Deny",
695
 
                                   ))))
 
682
                self.log_message_raw(("bold",
 
683
                                      "  ".
 
684
                                      join(("q: Quit",
 
685
                                            "?: Help",
 
686
                                            "l: Log window toggle",
 
687
                                            "TAB: Switch window",
 
688
                                            "w: Wrap (log lines)",
 
689
                                            "v: Toggle verbose log",
 
690
                                            ))))
 
691
                self.log_message_raw(("bold",
 
692
                                      "  "
 
693
                                      .join(("Clients:",
 
694
                                             "+: Enable",
 
695
                                             "-: Disable",
 
696
                                             "R: Remove",
 
697
                                             "s: Start new checker",
 
698
                                             "S: Stop checker",
 
699
                                             "C: Checker OK",
 
700
                                             "a: Approve",
 
701
                                             "d: Deny"))))
696
702
                self.refresh()
697
703
            elif key == "tab":
698
704
                if self.topwidget.get_focus() is self.logbox:
701
707
                    self.topwidget.set_focus(self.logbox)
702
708
                self.refresh()
703
709
            elif key == "v":
704
 
                if log.level < logging.INFO:
705
 
                    log.setLevel(logging.INFO)
706
 
                    log.info("Verbose mode: Off")
 
710
                if self.log_level == 0:
 
711
                    self.log_level = 1
 
712
                    self.log_message("Verbose mode: Off")
707
713
                else:
708
 
                    log.setLevel(logging.NOTSET)
709
 
                    log.info("Verbose mode: On")
 
714
                    self.log_level = 0
 
715
                    self.log_message("Verbose mode: On")
710
716
            # elif (key == "end" or key == "meta >" or key == "G"
711
717
            #       or key == ">"):
712
718
            #     pass            # xxx end-of-buffer
731
737
        return True
732
738
 
733
739
 
734
 
class UILogHandler(logging.Handler):
735
 
    def __init__(self, ui, *args, **kwargs):
736
 
        self.ui = ui
737
 
        super(UILogHandler, self).__init__(*args, **kwargs)
738
 
        self.setFormatter(
739
 
            logging.Formatter("%(asctime)s: %(message)s"))
740
 
    def emit(self, record):
741
 
        msg = self.format(record)
742
 
        if record.levelno > logging.INFO:
743
 
            msg = ("bold", msg)
744
 
        self.ui.add_log_line(msg)
745
 
 
746
 
 
747
740
ui = UserInterface()
748
741
try:
749
742
    ui.run()
750
743
except KeyboardInterrupt:
751
 
    with warnings.catch_warnings():
752
 
        warnings.filterwarnings("ignore", "", BytesWarning)
753
 
        ui.screen.stop()
754
 
except Exception:
755
 
    with warnings.catch_warnings():
756
 
        warnings.filterwarnings("ignore", "", BytesWarning)
757
 
        ui.screen.stop()
 
744
    ui.screen.stop()
 
745
except Exception as e:
 
746
    ui.log_message(str(e))
 
747
    ui.screen.stop()
758
748
    raise