/mandos/release

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  • Committer: Teddy Hogeborn
  • Date: 2019-08-05 14:31:51 UTC
  • mto: This revision was merged to the branch mainline in revision 388.
  • Revision ID: teddy@recompile.se-20190805143151-lt5d97wqif3t8250
Client: Debian package fix: Make uninstall when using dracut(8) work

Use the same logic to rebuild the initramfs image when uninstalling as
when installing the package.

* debian/mandos-client.postrm (update_initramfs): Use the same logic
  as the update_initramfs function in debian/mandos-client.postinst.

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Lines of Context:
mandos-monitor
 
1
#!/usr/bin/python
 
2
# -*- mode: python; coding: utf-8 -*-
 
3
#
 
4
# Mandos Monitor - Control and monitor the Mandos server
 
5
#
 
6
# Copyright © 2009-2019 Teddy Hogeborn
 
7
# Copyright © 2009-2019 Björn Påhlsson
 
8
#
 
9
# This file is part of Mandos.
 
10
#
 
11
# Mandos is free software: you can redistribute it and/or modify it
 
12
# under the terms of the GNU General Public License as published by
 
13
# the Free Software Foundation, either version 3 of the License, or
 
14
# (at your option) any later version.
 
15
#
 
16
#     Mandos is distributed in the hope that it will be useful, but
 
17
#     WITHOUT ANY WARRANTY; without even the implied warranty of
 
18
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
19
#     GNU General Public License for more details.
 
20
#
 
21
# You should have received a copy of the GNU General Public License
 
22
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
23
#
 
24
# Contact the authors at <mandos@recompile.se>.
 
25
#
 
26
 
 
27
from __future__ import (division, absolute_import, print_function,
 
28
                        unicode_literals)
 
29
try:
 
30
    from future_builtins import *
 
31
except ImportError:
 
32
    pass
 
33
 
 
34
import sys
 
35
import os
 
36
 
 
37
import datetime
 
38
 
 
39
import urwid.curses_display
 
40
import urwid
 
41
 
 
42
from dbus.mainloop.glib import DBusGMainLoop
 
43
from gi.repository import GLib
 
44
 
 
45
import dbus
 
46
 
 
47
import locale
 
48
 
 
49
import logging
 
50
 
 
51
if sys.version_info.major == 2:
 
52
    str = unicode
 
53
 
 
54
locale.setlocale(locale.LC_ALL, '')
 
55
 
 
56
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
 
57
 
 
58
# Some useful constants
 
59
domain = 'se.recompile'
 
60
server_interface = domain + '.Mandos'
 
61
client_interface = domain + '.Mandos.Client'
 
62
version = "1.8.6"
 
63
 
 
64
try:
 
65
    dbus.OBJECT_MANAGER_IFACE
 
66
except AttributeError:
 
67
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
68
 
 
69
 
 
70
def isoformat_to_datetime(iso):
 
71
    "Parse an ISO 8601 date string to a datetime.datetime()"
 
72
    if not iso:
 
73
        return None
 
74
    d, t = iso.split("T", 1)
 
75
    year, month, day = d.split("-", 2)
 
76
    hour, minute, second = t.split(":", 2)
 
77
    second, fraction = divmod(float(second), 1)
 
78
    return datetime.datetime(int(year),
 
79
                             int(month),
 
80
                             int(day),
 
81
                             int(hour),
 
82
                             int(minute),
 
83
                             int(second),            # Whole seconds
 
84
                             int(fraction*1000000))  # Microseconds
 
85
 
 
86
 
 
87
class MandosClientPropertyCache(object):
 
88
    """This wraps a Mandos Client D-Bus proxy object, caches the
 
89
    properties and calls a hook function when any of them are
 
90
    changed.
 
91
    """
 
92
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
93
        self.proxy = proxy_object  # Mandos Client proxy object
 
94
        self.properties = dict() if properties is None else properties
 
95
        self.property_changed_match = (
 
96
            self.proxy.connect_to_signal("PropertiesChanged",
 
97
                                         self.properties_changed,
 
98
                                         dbus.PROPERTIES_IFACE,
 
99
                                         byte_arrays=True))
 
100
 
 
101
        if properties is None:
 
102
            self.properties.update(self.proxy.GetAll(
 
103
                client_interface,
 
104
                dbus_interface=dbus.PROPERTIES_IFACE))
 
105
 
 
106
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
107
 
 
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.
 
111
        """
 
112
        # Update properties dict with new value
 
113
        if interface == client_interface:
 
114
            self.properties.update(properties)
 
115
 
 
116
    def delete(self):
 
117
        self.property_changed_match.remove()
 
118
 
 
119
 
 
120
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
 
121
    """A Mandos Client which is visible on the screen.
 
122
    """
 
123
 
 
124
    def __init__(self, server_proxy_object=None, update_hook=None,
 
125
                 delete_hook=None, logger=None, **kwargs):
 
126
        # Called on update
 
127
        self.update_hook = update_hook
 
128
        # Called on delete
 
129
        self.delete_hook = delete_hook
 
130
        # Mandos Server proxy object
 
131
        self.server_proxy_object = server_proxy_object
 
132
        # Logger
 
133
        self.logger = logger
 
134
 
 
135
        self._update_timer_callback_tag = None
 
136
 
 
137
        # The widget shown normally
 
138
        self._text_widget = urwid.Text("")
 
139
        # The widget shown when we have focus
 
140
        self._focus_text_widget = urwid.Text("")
 
141
        super(MandosClientWidget, self).__init__(**kwargs)
 
142
        self.update()
 
143
        self.opened = False
 
144
 
 
145
        self.match_objects = (
 
146
            self.proxy.connect_to_signal("CheckerCompleted",
 
147
                                         self.checker_completed,
 
148
                                         client_interface,
 
149
                                         byte_arrays=True),
 
150
            self.proxy.connect_to_signal("CheckerStarted",
 
151
                                         self.checker_started,
 
152
                                         client_interface,
 
153
                                         byte_arrays=True),
 
154
            self.proxy.connect_to_signal("GotSecret",
 
155
                                         self.got_secret,
 
156
                                         client_interface,
 
157
                                         byte_arrays=True),
 
158
            self.proxy.connect_to_signal("NeedApproval",
 
159
                                         self.need_approval,
 
160
                                         client_interface,
 
161
                                         byte_arrays=True),
 
162
            self.proxy.connect_to_signal("Rejected",
 
163
                                         self.rejected,
 
164
                                         client_interface,
 
165
                                         byte_arrays=True))
 
166
        self.logger('Created client {}'
 
167
                    .format(self.properties["Name"]), level=0)
 
168
 
 
169
    def using_timer(self, flag):
 
170
        """Call this method with True or False when timer should be
 
171
        activated or deactivated.
 
172
        """
 
173
        if flag and self._update_timer_callback_tag is None:
 
174
            # Will update the shown timer value every second
 
175
            self._update_timer_callback_tag = (GLib.timeout_add
 
176
                                               (1000,
 
177
                                                self.update_timer))
 
178
        elif not (flag or self._update_timer_callback_tag is None):
 
179
            GLib.source_remove(self._update_timer_callback_tag)
 
180
            self._update_timer_callback_tag = None
 
181
 
 
182
    def checker_completed(self, exitstatus, condition, command):
 
183
        if exitstatus == 0:
 
184
            self.logger('Checker for client {} (command "{}")'
 
185
                        ' succeeded'.format(self.properties["Name"],
 
186
                                            command), level=0)
 
187
            self.update()
 
188
            return
 
189
        # Checker failed
 
190
        if os.WIFEXITED(condition):
 
191
            self.logger('Checker for client {} (command "{}") failed'
 
192
                        ' with exit code {}'
 
193
                        .format(self.properties["Name"], command,
 
194
                                os.WEXITSTATUS(condition)))
 
195
        elif os.WIFSIGNALED(condition):
 
196
            self.logger('Checker for client {} (command "{}") was'
 
197
                        ' killed by signal {}'
 
198
                        .format(self.properties["Name"], command,
 
199
                                os.WTERMSIG(condition)))
 
200
        self.update()
 
201
 
 
202
    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)
 
207
 
 
208
    def got_secret(self):
 
209
        self.logger('Client {} received its secret'
 
210
                    .format(self.properties["Name"]))
 
211
 
 
212
    def need_approval(self, timeout, default):
 
213
        if not default:
 
214
            message = 'Client {} needs approval within {} seconds'
 
215
        else:
 
216
            message = 'Client {} will get its secret in {} seconds'
 
217
        self.logger(message.format(self.properties["Name"],
 
218
                                   timeout/1000))
 
219
 
 
220
    def rejected(self, reason):
 
221
        self.logger('Client {} was rejected; reason: {}'
 
222
                    .format(self.properties["Name"], reason))
 
223
 
 
224
    def selectable(self):
 
225
        """Make this a "selectable" widget.
 
226
        This overrides the method from urwid.FlowWidget."""
 
227
        return True
 
228
 
 
229
    def rows(self, maxcolrow, focus=False):
 
230
        """How many rows this widget will occupy might depend on
 
231
        whether we have focus or not.
 
232
        This overrides the method from urwid.FlowWidget"""
 
233
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
234
 
 
235
    def current_widget(self, focus=False):
 
236
        if focus or self.opened:
 
237
            return self._focus_widget
 
238
        return self._widget
 
239
 
 
240
    def update(self):
 
241
        "Called when what is visible on the screen should be updated."
 
242
        # How to add standout mode to a style
 
243
        with_standout = {"normal": "standout",
 
244
                         "bold": "bold-standout",
 
245
                         "underline-blink":
 
246
                         "underline-blink-standout",
 
247
                         "bold-underline-blink":
 
248
                         "bold-underline-blink-standout",
 
249
                         }
 
250
 
 
251
        # Rebuild focus and non-focus widgets using current properties
 
252
 
 
253
        # Base part of a client. Name!
 
254
        base = '{name}: '.format(name=self.properties["Name"])
 
255
        if not self.properties["Enabled"]:
 
256
            message = "DISABLED"
 
257
            self.using_timer(False)
 
258
        elif self.properties["ApprovalPending"]:
 
259
            timeout = datetime.timedelta(
 
260
                milliseconds=self.properties["ApprovalDelay"])
 
261
            last_approval_request = isoformat_to_datetime(
 
262
                self.properties["LastApprovalRequest"])
 
263
            if last_approval_request is not None:
 
264
                timer = max(timeout - (datetime.datetime.utcnow()
 
265
                                       - last_approval_request),
 
266
                            datetime.timedelta())
 
267
            else:
 
268
                timer = datetime.timedelta()
 
269
            if self.properties["ApprovedByDefault"]:
 
270
                message = "Approval in {}. (d)eny?"
 
271
            else:
 
272
                message = "Denial in {}. (a)pprove?"
 
273
            message = message.format(str(timer).rsplit(".", 1)[0])
 
274
            self.using_timer(True)
 
275
        elif self.properties["LastCheckerStatus"] != 0:
 
276
            # When checker has failed, show timer until client expires
 
277
            expires = self.properties["Expires"]
 
278
            if expires == "":
 
279
                timer = datetime.timedelta(0)
 
280
            else:
 
281
                expires = (datetime.datetime.strptime
 
282
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
283
                timer = max(expires - datetime.datetime.utcnow(),
 
284
                            datetime.timedelta())
 
285
            message = ('A checker has failed! Time until client'
 
286
                       ' gets disabled: {}'
 
287
                       .format(str(timer).rsplit(".", 1)[0]))
 
288
            self.using_timer(True)
 
289
        else:
 
290
            message = "enabled"
 
291
            self.using_timer(False)
 
292
        self._text = "{}{}".format(base, message)
 
293
 
 
294
        if not urwid.supports_unicode():
 
295
            self._text = self._text.encode("ascii", "replace")
 
296
        textlist = [("normal", self._text)]
 
297
        self._text_widget.set_text(textlist)
 
298
        self._focus_text_widget.set_text([(with_standout[text[0]],
 
299
                                           text[1])
 
300
                                          if isinstance(text, tuple)
 
301
                                          else text
 
302
                                          for text in textlist])
 
303
        self._widget = self._text_widget
 
304
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
 
305
                                            "standout")
 
306
        # Run update hook, if any
 
307
        if self.update_hook is not None:
 
308
            self.update_hook()
 
309
 
 
310
    def update_timer(self):
 
311
        """called by GLib. Will indefinitely loop until
 
312
        GLib.source_remove() on tag is called
 
313
        """
 
314
        self.update()
 
315
        return True             # Keep calling this
 
316
 
 
317
    def delete(self, **kwargs):
 
318
        if self._update_timer_callback_tag is not None:
 
319
            GLib.source_remove(self._update_timer_callback_tag)
 
320
            self._update_timer_callback_tag = None
 
321
        for match in self.match_objects:
 
322
            match.remove()
 
323
        self.match_objects = ()
 
324
        if self.delete_hook is not None:
 
325
            self.delete_hook(self)
 
326
        return super(MandosClientWidget, self).delete(**kwargs)
 
327
 
 
328
    def render(self, maxcolrow, focus=False):
 
329
        """Render differently if we have focus.
 
330
        This overrides the method from urwid.FlowWidget"""
 
331
        return self.current_widget(focus).render(maxcolrow,
 
332
                                                 focus=focus)
 
333
 
 
334
    def keypress(self, maxcolrow, key):
 
335
        """Handle keys.
 
336
        This overrides the method from urwid.FlowWidget"""
 
337
        if key == "+":
 
338
            self.proxy.Set(client_interface, "Enabled",
 
339
                           dbus.Boolean(True), ignore_reply=True,
 
340
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
341
        elif key == "-":
 
342
            self.proxy.Set(client_interface, "Enabled", False,
 
343
                           ignore_reply=True,
 
344
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
345
        elif key == "a":
 
346
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
 
347
                               dbus_interface=client_interface,
 
348
                               ignore_reply=True)
 
349
        elif key == "d":
 
350
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
 
351
                               dbus_interface=client_interface,
 
352
                               ignore_reply=True)
 
353
        elif key == "R" or key == "_" or key == "ctrl k":
 
354
            self.server_proxy_object.RemoveClient(self.proxy
 
355
                                                  .object_path,
 
356
                                                  ignore_reply=True)
 
357
        elif key == "s":
 
358
            self.proxy.Set(client_interface, "CheckerRunning",
 
359
                           dbus.Boolean(True), ignore_reply=True,
 
360
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
361
        elif key == "S":
 
362
            self.proxy.Set(client_interface, "CheckerRunning",
 
363
                           dbus.Boolean(False), ignore_reply=True,
 
364
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
365
        elif key == "C":
 
366
            self.proxy.CheckedOK(dbus_interface=client_interface,
 
367
                                 ignore_reply=True)
 
368
        # xxx
 
369
#         elif key == "p" or key == "=":
 
370
#             self.proxy.pause()
 
371
#         elif key == "u" or key == ":":
 
372
#             self.proxy.unpause()
 
373
#         elif key == "RET":
 
374
#             self.open()
 
375
        else:
 
376
            return key
 
377
 
 
378
    def properties_changed(self, interface, properties, invalidated):
 
379
        """Call self.update() if any properties changed.
 
380
        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):
 
387
            self.update()
 
388
 
 
389
 
 
390
class ConstrainedListBox(urwid.ListBox):
 
391
    """Like a normal urwid.ListBox, but will consume all "up" or
 
392
    "down" key presses, thus not allowing any containing widgets to
 
393
    use them as an excuse to shift focus away from this widget.
 
394
    """
 
395
    def keypress(self, *args, **kwargs):
 
396
        ret = (super(ConstrainedListBox, self)
 
397
               .keypress(*args, **kwargs))
 
398
        if ret in ("up", "down"):
 
399
            return
 
400
        return ret
 
401
 
 
402
 
 
403
class UserInterface(object):
 
404
    """This is the entire user interface - the whole screen
 
405
    with boxes, lists of client widgets, etc.
 
406
    """
 
407
    def __init__(self, max_log_length=1000, log_level=1):
 
408
        DBusGMainLoop(set_as_default=True)
 
409
 
 
410
        self.screen = urwid.curses_display.Screen()
 
411
 
 
412
        self.screen.register_palette((
 
413
                ("normal",
 
414
                 "default", "default", None),
 
415
                ("bold",
 
416
                 "bold", "default", "bold"),
 
417
                ("underline-blink",
 
418
                 "underline,blink", "default", "underline,blink"),
 
419
                ("standout",
 
420
                 "standout", "default", "standout"),
 
421
                ("bold-underline-blink",
 
422
                 "bold,underline,blink", "default",
 
423
                 "bold,underline,blink"),
 
424
                ("bold-standout",
 
425
                 "bold,standout", "default", "bold,standout"),
 
426
                ("underline-blink-standout",
 
427
                 "underline,blink,standout", "default",
 
428
                 "underline,blink,standout"),
 
429
                ("bold-underline-blink-standout",
 
430
                 "bold,underline,blink,standout", "default",
 
431
                 "bold,underline,blink,standout"),
 
432
                ))
 
433
 
 
434
        if urwid.supports_unicode():
 
435
            self.divider = "─"  # \u2500
 
436
        else:
 
437
            self.divider = "_"  # \u005f
 
438
 
 
439
        self.screen.start()
 
440
 
 
441
        self.size = self.screen.get_cols_rows()
 
442
 
 
443
        self.clients = urwid.SimpleListWalker([])
 
444
        self.clients_dict = {}
 
445
 
 
446
        # We will add Text widgets to this list
 
447
        self.log = urwid.SimpleListWalker([])
 
448
        self.max_log_length = max_log_length
 
449
 
 
450
        self.log_level = log_level
 
451
 
 
452
        # We keep a reference to the log widget so we can remove it
 
453
        # from the ListWalker without it getting destroyed
 
454
        self.logbox = ConstrainedListBox(self.log)
 
455
 
 
456
        # This keeps track of whether self.uilist currently has
 
457
        # self.logbox in it or not
 
458
        self.log_visible = True
 
459
        self.log_wrap = "any"
 
460
 
 
461
        self.rebuild()
 
462
        self.log_message_raw(("bold",
 
463
                              "Mandos Monitor version " + version))
 
464
        self.log_message_raw(("bold",
 
465
                              "q: Quit  ?: Help"))
 
466
 
 
467
        self.busname = domain + '.Mandos'
 
468
        self.main_loop = GLib.MainLoop()
 
469
 
 
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))
 
474
 
 
475
    def rebuild(self):
 
476
        """This rebuilds the User Interface.
 
477
        Call this when the widget layout needs to change"""
 
478
        self.uilist = []
 
479
        # self.uilist.append(urwid.ListBox(self.clients))
 
480
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
481
                                                          clients),
 
482
                                       # header=urwid.Divider(),
 
483
                                       header=None,
 
484
                                       footer=urwid.Divider(
 
485
                                           div_char=self.divider)))
 
486
        if self.log_visible:
 
487
            self.uilist.append(self.logbox)
 
488
        self.topwidget = urwid.Pile(self.uilist)
 
489
 
 
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
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
 
503
        if self.max_log_length:
 
504
            if len(self.log) > self.max_log_length:
 
505
                del self.log[0:len(self.log)-self.max_log_length-1]
 
506
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
 
507
                              coming_from="above")
 
508
        self.refresh()
 
509
 
 
510
    def toggle_log_display(self):
 
511
        """Toggle visibility of the log buffer."""
 
512
        self.log_visible = not self.log_visible
 
513
        self.rebuild()
 
514
        self.log_message("Log visibility changed to: {}"
 
515
                         .format(self.log_visible), level=0)
 
516
 
 
517
    def change_log_display(self):
 
518
        """Change type of log display.
 
519
        Currently, this toggles wrapping of text lines."""
 
520
        if self.log_wrap == "clip":
 
521
            self.log_wrap = "any"
 
522
        else:
 
523
            self.log_wrap = "clip"
 
524
        for textwidget in self.log:
 
525
            textwidget.set_wrap_mode(self.log_wrap)
 
526
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
527
                         level=0)
 
528
 
 
529
    def find_and_remove_client(self, path, interfaces):
 
530
        """Find a client by its object path and remove it.
 
531
 
 
532
        This is connected to the InterfacesRemoved signal from the
 
533
        Mandos server object."""
 
534
        if client_interface not in interfaces:
 
535
            # Not a Mandos client object; ignore
 
536
            return
 
537
        try:
 
538
            client = self.clients_dict[path]
 
539
        except KeyError:
 
540
            # not found?
 
541
            self.log_message("Unknown client {!r} removed"
 
542
                             .format(path))
 
543
            return
 
544
        client.delete()
 
545
 
 
546
    def add_new_client(self, path, ifs_and_props):
 
547
        """Find a client by its object path and remove it.
 
548
 
 
549
        This is connected to the InterfacesAdded signal from the
 
550
        Mandos server object.
 
551
        """
 
552
        if client_interface not in ifs_and_props:
 
553
            # Not a Mandos client object; ignore
 
554
            return
 
555
        client_proxy_object = self.bus.get_object(self.busname, path)
 
556
        self.add_client(MandosClientWidget(
 
557
            server_proxy_object=self.mandos_serv,
 
558
            proxy_object=client_proxy_object,
 
559
            update_hook=self.refresh,
 
560
            delete_hook=self.remove_client,
 
561
            logger=self.log_message,
 
562
            properties=dict(ifs_and_props[client_interface])),
 
563
                        path=path)
 
564
 
 
565
    def add_client(self, client, path=None):
 
566
        self.clients.append(client)
 
567
        if path is None:
 
568
            path = client.proxy.object_path
 
569
        self.clients_dict[path] = client
 
570
        self.clients.sort(key=lambda c: c.properties["Name"])
 
571
        self.refresh()
 
572
 
 
573
    def remove_client(self, client, path=None):
 
574
        self.clients.remove(client)
 
575
        if path is None:
 
576
            path = client.proxy.object_path
 
577
        del self.clients_dict[path]
 
578
        self.refresh()
 
579
 
 
580
    def refresh(self):
 
581
        """Redraw the screen"""
 
582
        canvas = self.topwidget.render(self.size, focus=True)
 
583
        self.screen.draw_screen(self.size, canvas)
 
584
 
 
585
    def run(self):
 
586
        """Start the main loop and exit when it's done."""
 
587
        self.bus = dbus.SystemBus()
 
588
        mandos_dbus_objc = self.bus.get_object(
 
589
            self.busname, "/", follow_name_owner_changes=True)
 
590
        self.mandos_serv = dbus.Interface(
 
591
            mandos_dbus_objc, dbus_interface=server_interface)
 
592
        try:
 
593
            mandos_clients = (self.mandos_serv
 
594
                              .GetAllClientsWithProperties())
 
595
            if not mandos_clients:
 
596
                self.log_message_raw(("bold",
 
597
                                      "Note: Server has no clients."))
 
598
        except dbus.exceptions.DBusException:
 
599
            self.log_message_raw(("bold",
 
600
                                  "Note: No Mandos server running."))
 
601
            mandos_clients = dbus.Dictionary()
 
602
 
 
603
        (self.mandos_serv
 
604
         .connect_to_signal("InterfacesRemoved",
 
605
                            self.find_and_remove_client,
 
606
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
607
                            byte_arrays=True))
 
608
        (self.mandos_serv
 
609
         .connect_to_signal("InterfacesAdded",
 
610
                            self.add_new_client,
 
611
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
612
                            byte_arrays=True))
 
613
        (self.mandos_serv
 
614
         .connect_to_signal("ClientNotFound",
 
615
                            self.client_not_found,
 
616
                            dbus_interface=server_interface,
 
617
                            byte_arrays=True))
 
618
        for path, client in mandos_clients.items():
 
619
            client_proxy_object = self.bus.get_object(self.busname,
 
620
                                                      path)
 
621
            self.add_client(MandosClientWidget(
 
622
                server_proxy_object=self.mandos_serv,
 
623
                proxy_object=client_proxy_object,
 
624
                properties=client,
 
625
                update_hook=self.refresh,
 
626
                delete_hook=self.remove_client,
 
627
                logger=self.log_message),
 
628
                            path=path)
 
629
 
 
630
        self.refresh()
 
631
        self._input_callback_tag = (GLib.io_add_watch
 
632
                                    (sys.stdin.fileno(),
 
633
                                     GLib.IO_IN,
 
634
                                     self.process_input))
 
635
        self.main_loop.run()
 
636
        # Main loop has finished, we should close everything now
 
637
        GLib.source_remove(self._input_callback_tag)
 
638
        self.screen.stop()
 
639
 
 
640
    def stop(self):
 
641
        self.main_loop.quit()
 
642
 
 
643
    def process_input(self, source, condition):
 
644
        keys = self.screen.get_input()
 
645
        translations = {"ctrl n": "down",       # Emacs
 
646
                        "ctrl p": "up",         # Emacs
 
647
                        "ctrl v": "page down",  # Emacs
 
648
                        "meta v": "page up",    # Emacs
 
649
                        " ": "page down",       # less
 
650
                        "f": "page down",       # less
 
651
                        "b": "page up",         # less
 
652
                        "j": "down",            # vi
 
653
                        "k": "up",              # vi
 
654
                        }
 
655
        for key in keys:
 
656
            try:
 
657
                key = translations[key]
 
658
            except KeyError:    # :-)
 
659
                pass
 
660
 
 
661
            if key == "q" or key == "Q":
 
662
                self.stop()
 
663
                break
 
664
            elif key == "window resize":
 
665
                self.size = self.screen.get_cols_rows()
 
666
                self.refresh()
 
667
            elif key == "ctrl l":
 
668
                self.screen.clear()
 
669
                self.refresh()
 
670
            elif key == "l" or key == "D":
 
671
                self.toggle_log_display()
 
672
                self.refresh()
 
673
            elif key == "w" or key == "i":
 
674
                self.change_log_display()
 
675
                self.refresh()
 
676
            elif key == "?" or key == "f1" or key == "esc":
 
677
                if not self.log_visible:
 
678
                    self.log_visible = True
 
679
                    self.rebuild()
 
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"))))
 
700
                self.refresh()
 
701
            elif key == "tab":
 
702
                if self.topwidget.get_focus() is self.logbox:
 
703
                    self.topwidget.set_focus(0)
 
704
                else:
 
705
                    self.topwidget.set_focus(self.logbox)
 
706
                self.refresh()
 
707
            elif key == "v":
 
708
                if self.log_level == 0:
 
709
                    self.log_level = 1
 
710
                    self.log_message("Verbose mode: Off")
 
711
                else:
 
712
                    self.log_level = 0
 
713
                    self.log_message("Verbose mode: On")
 
714
            # elif (key == "end" or key == "meta >" or key == "G"
 
715
            #       or key == ">"):
 
716
            #     pass            # xxx end-of-buffer
 
717
            # elif (key == "home" or key == "meta <" or key == "g"
 
718
            #       or key == "<"):
 
719
            #     pass            # xxx beginning-of-buffer
 
720
            # elif key == "ctrl e" or key == "$":
 
721
            #     pass            # xxx move-end-of-line
 
722
            # elif key == "ctrl a" or key == "^":
 
723
            #     pass            # xxx move-beginning-of-line
 
724
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
725
            #     pass            # xxx left
 
726
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
727
            #     pass            # xxx right
 
728
            # elif key == "a":
 
729
            #     pass            # scroll up log
 
730
            # elif key == "z":
 
731
            #     pass            # scroll down log
 
732
            elif self.topwidget.selectable():
 
733
                self.topwidget.keypress(self.size, key)
 
734
                self.refresh()
 
735
        return True
 
736
 
 
737
 
 
738
ui = UserInterface()
 
739
try:
 
740
    ui.run()
 
741
except KeyboardInterrupt:
 
742
    ui.screen.stop()
 
743
except Exception as e:
 
744
    ui.log_message(str(e))
 
745
    ui.screen.stop()
 
746
    raise