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  • Committer: Teddy Hogeborn
  • Date: 2019-07-24 11:02:24 UTC
  • Revision ID: teddy@recompile.se-20190724110224-i5wwdsrv2h9ic4nh
Fix bashisms: Use "command -v" instead of "type"

* Makefile (DOCBOOKTOMAN): Change "type" to "command -v".
* mandos-to-cryptroot-unlock: - '' -

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mandos-monitor
1
 
#!/usr/bin/python3 -bbI
 
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos Monitor - Control and monitor the Mandos server
23
23
#
24
24
# Contact the authors at <mandos@recompile.se>.
25
25
#
 
26
 
26
27
from __future__ import (division, absolute_import, print_function,
27
28
                        unicode_literals)
28
 
 
29
29
try:
30
30
    from future_builtins import *
31
31
except ImportError:
32
32
    pass
33
33
 
34
34
import sys
35
 
import logging
36
35
import os
37
 
import warnings
 
36
 
38
37
import datetime
39
 
import locale
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
 
    input = raw_input
53
 
 
54
 
# Show warnings by default
55
 
if not sys.warnoptions:
56
 
    warnings.simplefilter("default")
57
 
 
58
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
59
 
logging.basicConfig(level="NOTSET", # Show all messages
60
 
                    format="%(message)s") # Show basic log messages
61
 
 
62
 
logging.captureWarnings(True)   # Show warnings via the logging system
63
 
 
64
 
locale.setlocale(locale.LC_ALL, "")
65
 
 
66
 
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
67
 
logging.getLogger("urwid").setLevel(logging.INFO)
 
53
 
 
54
locale.setlocale(locale.LC_ALL, '')
 
55
 
 
56
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
68
57
 
69
58
# Some useful constants
70
 
domain = "se.recompile"
71
 
server_interface = domain + ".Mandos"
72
 
client_interface = domain + ".Mandos.Client"
73
 
version = "1.8.17"
 
59
domain = 'se.recompile'
 
60
server_interface = domain + '.Mandos'
 
61
client_interface = domain + '.Mandos.Client'
 
62
version = "1.8.4"
74
63
 
75
64
try:
76
65
    dbus.OBJECT_MANAGER_IFACE
95
84
                             int(fraction*1000000))  # Microseconds
96
85
 
97
86
 
98
 
class MandosClientPropertyCache:
 
87
class MandosClientPropertyCache(object):
99
88
    """This wraps a Mandos Client D-Bus proxy object, caches the
100
89
    properties and calls a hook function when any of them are
101
90
    changed.
133
122
    """
134
123
 
135
124
    def __init__(self, server_proxy_object=None, update_hook=None,
136
 
                 delete_hook=None, **kwargs):
 
125
                 delete_hook=None, logger=None, **kwargs):
137
126
        # Called on update
138
127
        self.update_hook = update_hook
139
128
        # Called on delete
140
129
        self.delete_hook = delete_hook
141
130
        # Mandos Server proxy object
142
131
        self.server_proxy_object = server_proxy_object
 
132
        # Logger
 
133
        self.logger = logger
143
134
 
144
135
        self._update_timer_callback_tag = None
145
136
 
172
163
                                         self.rejected,
173
164
                                         client_interface,
174
165
                                         byte_arrays=True))
175
 
        log.debug("Created client %s", self.properties["Name"])
 
166
        self.logger('Created client {}'
 
167
                    .format(self.properties["Name"]), level=0)
176
168
 
177
169
    def using_timer(self, flag):
178
170
        """Call this method with True or False when timer should be
180
172
        """
181
173
        if flag and self._update_timer_callback_tag is None:
182
174
            # Will update the shown timer value every second
183
 
            self._update_timer_callback_tag = (
184
 
                GLib.timeout_add(1000,
185
 
                                 glib_safely(self.update_timer)))
 
175
            self._update_timer_callback_tag = (GLib.timeout_add
 
176
                                               (1000,
 
177
                                                self.update_timer))
186
178
        elif not (flag or self._update_timer_callback_tag is None):
187
179
            GLib.source_remove(self._update_timer_callback_tag)
188
180
            self._update_timer_callback_tag = None
189
181
 
190
182
    def checker_completed(self, exitstatus, condition, command):
191
183
        if exitstatus == 0:
192
 
            log.debug('Checker for client %s (command "%s")'
193
 
                      " succeeded", self.properties["Name"], command)
 
184
            self.logger('Checker for client {} (command "{}")'
 
185
                        ' succeeded'.format(self.properties["Name"],
 
186
                                            command), level=0)
194
187
            self.update()
195
188
            return
196
189
        # Checker failed
197
190
        if os.WIFEXITED(condition):
198
 
            log.info('Checker for client %s (command "%s") failed'
199
 
                     " with exit code %d", self.properties["Name"],
200
 
                     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)))
201
195
        elif os.WIFSIGNALED(condition):
202
 
            log.info('Checker for client %s (command "%s") was'
203
 
                     " killed by signal %d", self.properties["Name"],
204
 
                     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)))
205
200
        self.update()
206
201
 
207
202
    def checker_started(self, command):
208
203
        """Server signals that a checker started."""
209
 
        log.debug('Client %s started checker "%s"',
210
 
                  self.properties["Name"], command)
 
204
        self.logger('Client {} started checker "{}"'
 
205
                    .format(self.properties["Name"],
 
206
                            command), level=0)
211
207
 
212
208
    def got_secret(self):
213
 
        log.info("Client %s received its secret",
214
 
                 self.properties["Name"])
 
209
        self.logger('Client {} received its secret'
 
210
                    .format(self.properties["Name"]))
215
211
 
216
212
    def need_approval(self, timeout, default):
217
213
        if not default:
218
 
            message = "Client %s needs approval within %f seconds"
 
214
            message = 'Client {} needs approval within {} seconds'
219
215
        else:
220
 
            message = "Client %s will get its secret in %f seconds"
221
 
        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))
222
219
 
223
220
    def rejected(self, reason):
224
 
        log.info("Client %s was rejected; reason: %s",
225
 
                 self.properties["Name"], reason)
 
221
        self.logger('Client {} was rejected; reason: {}'
 
222
                    .format(self.properties["Name"], reason))
226
223
 
227
224
    def selectable(self):
228
225
        """Make this a "selectable" widget.
254
251
        # Rebuild focus and non-focus widgets using current properties
255
252
 
256
253
        # Base part of a client. Name!
257
 
        base = "{name}: ".format(name=self.properties["Name"])
 
254
        base = '{name}: '.format(name=self.properties["Name"])
258
255
        if not self.properties["Enabled"]:
259
256
            message = "DISABLED"
260
257
            self.using_timer(False)
282
279
                timer = datetime.timedelta(0)
283
280
            else:
284
281
                expires = (datetime.datetime.strptime
285
 
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
 
282
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
286
283
                timer = max(expires - datetime.datetime.utcnow(),
287
284
                            datetime.timedelta())
288
 
            message = ("A checker has failed! Time until client"
289
 
                       " gets disabled: {}"
 
285
            message = ('A checker has failed! Time until client'
 
286
                       ' gets disabled: {}'
290
287
                       .format(str(timer).rsplit(".", 1)[0]))
291
288
            self.using_timer(True)
292
289
        else:
390
387
            self.update()
391
388
 
392
389
 
393
 
def glib_safely(func, retval=True):
394
 
    def safe_func(*args, **kwargs):
395
 
        try:
396
 
            return func(*args, **kwargs)
397
 
        except Exception:
398
 
            log.exception("")
399
 
            return retval
400
 
    return safe_func
401
 
 
402
 
 
403
390
class ConstrainedListBox(urwid.ListBox):
404
391
    """Like a normal urwid.ListBox, but will consume all "up" or
405
392
    "down" key presses, thus not allowing any containing widgets to
413
400
        return ret
414
401
 
415
402
 
416
 
class UserInterface:
 
403
class UserInterface(object):
417
404
    """This is the entire user interface - the whole screen
418
405
    with boxes, lists of client widgets, etc.
419
406
    """
420
 
    def __init__(self, max_log_length=1000):
 
407
    def __init__(self, max_log_length=1000, log_level=1):
421
408
        DBusGMainLoop(set_as_default=True)
422
409
 
423
410
        self.screen = urwid.curses_display.Screen()
460
447
        self.log = urwid.SimpleListWalker([])
461
448
        self.max_log_length = max_log_length
462
449
 
 
450
        self.log_level = log_level
 
451
 
463
452
        # We keep a reference to the log widget so we can remove it
464
453
        # from the ListWalker without it getting destroyed
465
454
        self.logbox = ConstrainedListBox(self.log)
469
458
        self.log_visible = True
470
459
        self.log_wrap = "any"
471
460
 
472
 
        self.loghandler = UILogHandler(self)
473
 
 
474
461
        self.rebuild()
475
 
        self.add_log_line(("bold",
476
 
                           "Mandos Monitor version " + version))
477
 
        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"))
478
466
 
479
 
        self.busname = domain + ".Mandos"
 
467
        self.busname = domain + '.Mandos'
480
468
        self.main_loop = GLib.MainLoop()
481
469
 
482
 
    def client_not_found(self, key_id, address):
483
 
        log.info("Client with address %s and key ID %s could"
484
 
                 " not be found", address, key_id)
 
470
    def client_not_found(self, fingerprint, address):
 
471
        self.log_message("Client with address {} and fingerprint {}"
 
472
                         " could not be found"
 
473
                         .format(address, fingerprint))
485
474
 
486
475
    def rebuild(self):
487
476
        """This rebuilds the User Interface.
498
487
            self.uilist.append(self.logbox)
499
488
        self.topwidget = urwid.Pile(self.uilist)
500
489
 
501
 
    def add_log_line(self, markup):
 
490
    def log_message(self, message, level=1):
 
491
        """Log message formatted with timestamp"""
 
492
        if level < self.log_level:
 
493
            return
 
494
        timestamp = datetime.datetime.now().isoformat()
 
495
        self.log_message_raw("{}: {}".format(timestamp, message),
 
496
                             level=level)
 
497
 
 
498
    def log_message_raw(self, markup, level=1):
 
499
        """Add a log message to the log buffer."""
 
500
        if level < self.log_level:
 
501
            return
502
502
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
503
503
        if self.max_log_length:
504
504
            if len(self.log) > self.max_log_length:
505
 
                del self.log[0:(len(self.log) - self.max_log_length)]
 
505
                del self.log[0:len(self.log)-self.max_log_length-1]
506
506
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
507
507
                              coming_from="above")
508
508
        self.refresh()
511
511
        """Toggle visibility of the log buffer."""
512
512
        self.log_visible = not self.log_visible
513
513
        self.rebuild()
514
 
        log.debug("Log visibility changed to: %s", self.log_visible)
 
514
        self.log_message("Log visibility changed to: {}"
 
515
                         .format(self.log_visible), level=0)
515
516
 
516
517
    def change_log_display(self):
517
518
        """Change type of log display.
522
523
            self.log_wrap = "clip"
523
524
        for textwidget in self.log:
524
525
            textwidget.set_wrap_mode(self.log_wrap)
525
 
        log.debug("Wrap mode: %s", self.log_wrap)
 
526
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
527
                         level=0)
526
528
 
527
529
    def find_and_remove_client(self, path, interfaces):
528
530
        """Find a client by its object path and remove it.
536
538
            client = self.clients_dict[path]
537
539
        except KeyError:
538
540
            # not found?
539
 
            log.warning("Unknown client %s removed", path)
 
541
            self.log_message("Unknown client {!r} removed"
 
542
                             .format(path))
540
543
            return
541
544
        client.delete()
542
545
 
555
558
            proxy_object=client_proxy_object,
556
559
            update_hook=self.refresh,
557
560
            delete_hook=self.remove_client,
 
561
            logger=self.log_message,
558
562
            properties=dict(ifs_and_props[client_interface])),
559
563
                        path=path)
560
564
 
580
584
 
581
585
    def run(self):
582
586
        """Start the main loop and exit when it's done."""
583
 
        log.addHandler(self.loghandler)
584
 
        self.orig_log_propagate = log.propagate
585
 
        log.propagate = False
586
 
        self.orig_log_level = log.level
587
 
        log.setLevel("INFO")
588
587
        self.bus = dbus.SystemBus()
589
588
        mandos_dbus_objc = self.bus.get_object(
590
589
            self.busname, "/", follow_name_owner_changes=True)
594
593
            mandos_clients = (self.mandos_serv
595
594
                              .GetAllClientsWithProperties())
596
595
            if not mandos_clients:
597
 
                log.warning("Note: Server has no clients.")
 
596
                self.log_message_raw(("bold",
 
597
                                      "Note: Server has no clients."))
598
598
        except dbus.exceptions.DBusException:
599
 
            log.warning("Note: No Mandos server running.")
 
599
            self.log_message_raw(("bold",
 
600
                                  "Note: No Mandos server running."))
600
601
            mandos_clients = dbus.Dictionary()
601
602
 
602
603
        (self.mandos_serv
622
623
                proxy_object=client_proxy_object,
623
624
                properties=client,
624
625
                update_hook=self.refresh,
625
 
                delete_hook=self.remove_client),
 
626
                delete_hook=self.remove_client,
 
627
                logger=self.log_message),
626
628
                            path=path)
627
629
 
628
630
        self.refresh()
629
 
        self._input_callback_tag = (
630
 
            GLib.io_add_watch(
631
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
632
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
633
 
                glib_safely(self.process_input)))
 
631
        self._input_callback_tag = (GLib.io_add_watch
 
632
                                    (sys.stdin.fileno(),
 
633
                                     GLib.IO_IN,
 
634
                                     self.process_input))
634
635
        self.main_loop.run()
635
636
        # Main loop has finished, we should close everything now
636
637
        GLib.source_remove(self._input_callback_tag)
637
 
        with warnings.catch_warnings():
638
 
            warnings.simplefilter("ignore", BytesWarning)
639
 
            self.screen.stop()
 
638
        self.screen.stop()
640
639
 
641
640
    def stop(self):
642
641
        self.main_loop.quit()
643
 
        log.removeHandler(self.loghandler)
644
 
        log.propagate = self.orig_log_propagate
645
642
 
646
643
    def process_input(self, source, condition):
647
644
        keys = self.screen.get_input()
680
677
                if not self.log_visible:
681
678
                    self.log_visible = True
682
679
                    self.rebuild()
683
 
                self.add_log_line(("bold",
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.add_log_line(("bold",
692
 
                                   "  ".join(("Clients:",
693
 
                                              "+: Enable",
694
 
                                              "-: Disable",
695
 
                                              "R: Remove",
696
 
                                              "s: Start new checker",
697
 
                                              "S: Stop checker",
698
 
                                              "C: Checker OK",
699
 
                                              "a: Approve",
700
 
                                              "d: Deny",
701
 
                                   ))))
 
680
                self.log_message_raw(("bold",
 
681
                                      "  ".
 
682
                                      join(("q: Quit",
 
683
                                            "?: Help",
 
684
                                            "l: Log window toggle",
 
685
                                            "TAB: Switch window",
 
686
                                            "w: Wrap (log lines)",
 
687
                                            "v: Toggle verbose log",
 
688
                                            ))))
 
689
                self.log_message_raw(("bold",
 
690
                                      "  "
 
691
                                      .join(("Clients:",
 
692
                                             "+: Enable",
 
693
                                             "-: Disable",
 
694
                                             "R: Remove",
 
695
                                             "s: Start new checker",
 
696
                                             "S: Stop checker",
 
697
                                             "C: Checker OK",
 
698
                                             "a: Approve",
 
699
                                             "d: Deny"))))
702
700
                self.refresh()
703
701
            elif key == "tab":
704
702
                if self.topwidget.get_focus() is self.logbox:
707
705
                    self.topwidget.set_focus(self.logbox)
708
706
                self.refresh()
709
707
            elif key == "v":
710
 
                if log.level < logging.INFO:
711
 
                    log.setLevel(logging.INFO)
712
 
                    log.info("Verbose mode: Off")
 
708
                if self.log_level == 0:
 
709
                    self.log_level = 1
 
710
                    self.log_message("Verbose mode: Off")
713
711
                else:
714
 
                    log.setLevel(logging.NOTSET)
715
 
                    log.info("Verbose mode: On")
 
712
                    self.log_level = 0
 
713
                    self.log_message("Verbose mode: On")
716
714
            # elif (key == "end" or key == "meta >" or key == "G"
717
715
            #       or key == ">"):
718
716
            #     pass            # xxx end-of-buffer
737
735
        return True
738
736
 
739
737
 
740
 
class UILogHandler(logging.Handler):
741
 
    def __init__(self, ui, *args, **kwargs):
742
 
        self.ui = ui
743
 
        super(UILogHandler, self).__init__(*args, **kwargs)
744
 
        self.setFormatter(
745
 
            logging.Formatter("%(asctime)s: %(message)s"))
746
 
    def emit(self, record):
747
 
        msg = self.format(record)
748
 
        if record.levelno > logging.INFO:
749
 
            msg = ("bold", msg)
750
 
        self.ui.add_log_line(msg)
751
 
 
752
 
 
753
738
ui = UserInterface()
754
739
try:
755
740
    ui.run()
756
741
except KeyboardInterrupt:
757
 
    with warnings.catch_warnings():
758
 
        warnings.filterwarnings("ignore", "", BytesWarning)
759
 
        ui.screen.stop()
760
 
except Exception:
761
 
    with warnings.catch_warnings():
762
 
        warnings.filterwarnings("ignore", "", BytesWarning)
763
 
        ui.screen.stop()
 
742
    ui.screen.stop()
 
743
except Exception as e:
 
744
    ui.log_message(str(e))
 
745
    ui.screen.stop()
764
746
    raise