/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2009-01-15 02:52:02 UTC
  • Revision ID: teddy@fukt.bsnet.se-20090115025202-utyjssfivzumvw7m
* debian/watch: New file.

* debian/mandos-client.README.Debian (Emergency Escape): New section;
                                                         document the
                                                         "mandos=off"
                                                         kernel
                                                         parameter.
* initramfs-tools-script: Exit if kernel has parameter "mandos=off".

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Lines of Context:
1
 
#!/usr/bin/python3 -bbI
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
 
from __future__ import (division, absolute_import, print_function,
27
 
                        unicode_literals)
28
 
 
29
 
try:
30
 
    from future_builtins import *
31
 
except ImportError:
32
 
    pass
33
 
 
34
 
import sys
35
 
import logging
36
 
import os
37
 
import warnings
38
 
import datetime
39
 
import locale
40
 
 
41
 
import urwid.curses_display
42
 
import urwid
43
 
 
44
 
from dbus.mainloop.glib import DBusGMainLoop
45
 
from gi.repository import GLib
46
 
 
47
 
import dbus
48
 
 
49
 
if sys.version_info.major == 2:
50
 
    __metaclass__ = type
51
 
    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)
68
 
 
69
 
# Some useful constants
70
 
domain = "se.recompile"
71
 
server_interface = domain + ".Mandos"
72
 
client_interface = domain + ".Mandos.Client"
73
 
version = "1.8.17"
74
 
 
75
 
try:
76
 
    dbus.OBJECT_MANAGER_IFACE
77
 
except AttributeError:
78
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
79
 
 
80
 
 
81
 
def isoformat_to_datetime(iso):
82
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
83
 
    if not iso:
84
 
        return None
85
 
    d, t = iso.split("T", 1)
86
 
    year, month, day = d.split("-", 2)
87
 
    hour, minute, second = t.split(":", 2)
88
 
    second, fraction = divmod(float(second), 1)
89
 
    return datetime.datetime(int(year),
90
 
                             int(month),
91
 
                             int(day),
92
 
                             int(hour),
93
 
                             int(minute),
94
 
                             int(second),            # Whole seconds
95
 
                             int(fraction*1000000))  # Microseconds
96
 
 
97
 
 
98
 
class MandosClientPropertyCache:
99
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
100
 
    properties and calls a hook function when any of them are
101
 
    changed.
102
 
    """
103
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
104
 
        self.proxy = proxy_object  # Mandos Client proxy object
105
 
        self.properties = dict() if properties is None else properties
106
 
        self.property_changed_match = (
107
 
            self.proxy.connect_to_signal("PropertiesChanged",
108
 
                                         self.properties_changed,
109
 
                                         dbus.PROPERTIES_IFACE,
110
 
                                         byte_arrays=True))
111
 
 
112
 
        if properties is None:
113
 
            self.properties.update(self.proxy.GetAll(
114
 
                client_interface,
115
 
                dbus_interface=dbus.PROPERTIES_IFACE))
116
 
 
117
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
118
 
 
119
 
    def properties_changed(self, interface, properties, invalidated):
120
 
        """This is called whenever we get a PropertiesChanged signal
121
 
        It updates the changed properties in the "properties" dict.
122
 
        """
123
 
        # Update properties dict with new value
124
 
        if interface == client_interface:
125
 
            self.properties.update(properties)
126
 
 
127
 
    def delete(self):
128
 
        self.property_changed_match.remove()
129
 
 
130
 
 
131
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
132
 
    """A Mandos Client which is visible on the screen.
133
 
    """
134
 
 
135
 
    def __init__(self, server_proxy_object=None, update_hook=None,
136
 
                 delete_hook=None, **kwargs):
137
 
        # Called on update
138
 
        self.update_hook = update_hook
139
 
        # Called on delete
140
 
        self.delete_hook = delete_hook
141
 
        # Mandos Server proxy object
142
 
        self.server_proxy_object = server_proxy_object
143
 
 
144
 
        self._update_timer_callback_tag = None
145
 
 
146
 
        # The widget shown normally
147
 
        self._text_widget = urwid.Text("")
148
 
        # The widget shown when we have focus
149
 
        self._focus_text_widget = urwid.Text("")
150
 
        super(MandosClientWidget, self).__init__(**kwargs)
151
 
        self.update()
152
 
        self.opened = False
153
 
 
154
 
        self.match_objects = (
155
 
            self.proxy.connect_to_signal("CheckerCompleted",
156
 
                                         self.checker_completed,
157
 
                                         client_interface,
158
 
                                         byte_arrays=True),
159
 
            self.proxy.connect_to_signal("CheckerStarted",
160
 
                                         self.checker_started,
161
 
                                         client_interface,
162
 
                                         byte_arrays=True),
163
 
            self.proxy.connect_to_signal("GotSecret",
164
 
                                         self.got_secret,
165
 
                                         client_interface,
166
 
                                         byte_arrays=True),
167
 
            self.proxy.connect_to_signal("NeedApproval",
168
 
                                         self.need_approval,
169
 
                                         client_interface,
170
 
                                         byte_arrays=True),
171
 
            self.proxy.connect_to_signal("Rejected",
172
 
                                         self.rejected,
173
 
                                         client_interface,
174
 
                                         byte_arrays=True))
175
 
        log.debug("Created client %s", self.properties["Name"])
176
 
 
177
 
    def using_timer(self, flag):
178
 
        """Call this method with True or False when timer should be
179
 
        activated or deactivated.
180
 
        """
181
 
        if flag and self._update_timer_callback_tag is None:
182
 
            # 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)))
186
 
        elif not (flag or self._update_timer_callback_tag is None):
187
 
            GLib.source_remove(self._update_timer_callback_tag)
188
 
            self._update_timer_callback_tag = None
189
 
 
190
 
    def checker_completed(self, exitstatus, condition, command):
191
 
        if exitstatus == 0:
192
 
            log.debug('Checker for client %s (command "%s")'
193
 
                      " succeeded", self.properties["Name"], command)
194
 
            self.update()
195
 
            return
196
 
        # Checker failed
197
 
        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))
201
 
        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))
205
 
        self.update()
206
 
 
207
 
    def checker_started(self, command):
208
 
        """Server signals that a checker started."""
209
 
        log.debug('Client %s started checker "%s"',
210
 
                  self.properties["Name"], command)
211
 
 
212
 
    def got_secret(self):
213
 
        log.info("Client %s received its secret",
214
 
                 self.properties["Name"])
215
 
 
216
 
    def need_approval(self, timeout, default):
217
 
        if not default:
218
 
            message = "Client %s needs approval within %f seconds"
219
 
        else:
220
 
            message = "Client %s will get its secret in %f seconds"
221
 
        log.info(message, self.properties["Name"], timeout/1000)
222
 
 
223
 
    def rejected(self, reason):
224
 
        log.info("Client %s was rejected; reason: %s",
225
 
                 self.properties["Name"], reason)
226
 
 
227
 
    def selectable(self):
228
 
        """Make this a "selectable" widget.
229
 
        This overrides the method from urwid.FlowWidget."""
230
 
        return True
231
 
 
232
 
    def rows(self, maxcolrow, focus=False):
233
 
        """How many rows this widget will occupy might depend on
234
 
        whether we have focus or not.
235
 
        This overrides the method from urwid.FlowWidget"""
236
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
237
 
 
238
 
    def current_widget(self, focus=False):
239
 
        if focus or self.opened:
240
 
            return self._focus_widget
241
 
        return self._widget
242
 
 
243
 
    def update(self):
244
 
        "Called when what is visible on the screen should be updated."
245
 
        # How to add standout mode to a style
246
 
        with_standout = {"normal": "standout",
247
 
                         "bold": "bold-standout",
248
 
                         "underline-blink":
249
 
                         "underline-blink-standout",
250
 
                         "bold-underline-blink":
251
 
                         "bold-underline-blink-standout",
252
 
                         }
253
 
 
254
 
        # Rebuild focus and non-focus widgets using current properties
255
 
 
256
 
        # Base part of a client. Name!
257
 
        base = "{name}: ".format(name=self.properties["Name"])
258
 
        if not self.properties["Enabled"]:
259
 
            message = "DISABLED"
260
 
            self.using_timer(False)
261
 
        elif self.properties["ApprovalPending"]:
262
 
            timeout = datetime.timedelta(
263
 
                milliseconds=self.properties["ApprovalDelay"])
264
 
            last_approval_request = isoformat_to_datetime(
265
 
                self.properties["LastApprovalRequest"])
266
 
            if last_approval_request is not None:
267
 
                timer = max(timeout - (datetime.datetime.utcnow()
268
 
                                       - last_approval_request),
269
 
                            datetime.timedelta())
270
 
            else:
271
 
                timer = datetime.timedelta()
272
 
            if self.properties["ApprovedByDefault"]:
273
 
                message = "Approval in {}. (d)eny?"
274
 
            else:
275
 
                message = "Denial in {}. (a)pprove?"
276
 
            message = message.format(str(timer).rsplit(".", 1)[0])
277
 
            self.using_timer(True)
278
 
        elif self.properties["LastCheckerStatus"] != 0:
279
 
            # When checker has failed, show timer until client expires
280
 
            expires = self.properties["Expires"]
281
 
            if expires == "":
282
 
                timer = datetime.timedelta(0)
283
 
            else:
284
 
                expires = (datetime.datetime.strptime
285
 
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
286
 
                timer = max(expires - datetime.datetime.utcnow(),
287
 
                            datetime.timedelta())
288
 
            message = ("A checker has failed! Time until client"
289
 
                       " gets disabled: {}"
290
 
                       .format(str(timer).rsplit(".", 1)[0]))
291
 
            self.using_timer(True)
292
 
        else:
293
 
            message = "enabled"
294
 
            self.using_timer(False)
295
 
        self._text = "{}{}".format(base, message)
296
 
 
297
 
        if not urwid.supports_unicode():
298
 
            self._text = self._text.encode("ascii", "replace")
299
 
        textlist = [("normal", self._text)]
300
 
        self._text_widget.set_text(textlist)
301
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
302
 
                                           text[1])
303
 
                                          if isinstance(text, tuple)
304
 
                                          else text
305
 
                                          for text in textlist])
306
 
        self._widget = self._text_widget
307
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
308
 
                                            "standout")
309
 
        # Run update hook, if any
310
 
        if self.update_hook is not None:
311
 
            self.update_hook()
312
 
 
313
 
    def update_timer(self):
314
 
        """called by GLib. Will indefinitely loop until
315
 
        GLib.source_remove() on tag is called
316
 
        """
317
 
        self.update()
318
 
        return True             # Keep calling this
319
 
 
320
 
    def delete(self, **kwargs):
321
 
        if self._update_timer_callback_tag is not None:
322
 
            GLib.source_remove(self._update_timer_callback_tag)
323
 
            self._update_timer_callback_tag = None
324
 
        for match in self.match_objects:
325
 
            match.remove()
326
 
        self.match_objects = ()
327
 
        if self.delete_hook is not None:
328
 
            self.delete_hook(self)
329
 
        return super(MandosClientWidget, self).delete(**kwargs)
330
 
 
331
 
    def render(self, maxcolrow, focus=False):
332
 
        """Render differently if we have focus.
333
 
        This overrides the method from urwid.FlowWidget"""
334
 
        return self.current_widget(focus).render(maxcolrow,
335
 
                                                 focus=focus)
336
 
 
337
 
    def keypress(self, maxcolrow, key):
338
 
        """Handle keys.
339
 
        This overrides the method from urwid.FlowWidget"""
340
 
        if key == "+":
341
 
            self.proxy.Set(client_interface, "Enabled",
342
 
                           dbus.Boolean(True), ignore_reply=True,
343
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
344
 
        elif key == "-":
345
 
            self.proxy.Set(client_interface, "Enabled", False,
346
 
                           ignore_reply=True,
347
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
348
 
        elif key == "a":
349
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
350
 
                               dbus_interface=client_interface,
351
 
                               ignore_reply=True)
352
 
        elif key == "d":
353
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
354
 
                               dbus_interface=client_interface,
355
 
                               ignore_reply=True)
356
 
        elif key == "R" or key == "_" or key == "ctrl k":
357
 
            self.server_proxy_object.RemoveClient(self.proxy
358
 
                                                  .object_path,
359
 
                                                  ignore_reply=True)
360
 
        elif key == "s":
361
 
            self.proxy.Set(client_interface, "CheckerRunning",
362
 
                           dbus.Boolean(True), ignore_reply=True,
363
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
364
 
        elif key == "S":
365
 
            self.proxy.Set(client_interface, "CheckerRunning",
366
 
                           dbus.Boolean(False), ignore_reply=True,
367
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
368
 
        elif key == "C":
369
 
            self.proxy.CheckedOK(dbus_interface=client_interface,
370
 
                                 ignore_reply=True)
371
 
        # xxx
372
 
#         elif key == "p" or key == "=":
373
 
#             self.proxy.pause()
374
 
#         elif key == "u" or key == ":":
375
 
#             self.proxy.unpause()
376
 
#         elif key == "RET":
377
 
#             self.open()
378
 
        else:
379
 
            return key
380
 
 
381
 
    def properties_changed(self, interface, properties, invalidated):
382
 
        """Call self.update() if any properties changed.
383
 
        This overrides the method from MandosClientPropertyCache"""
384
 
        old_values = {key: self.properties.get(key)
385
 
                      for key in properties.keys()}
386
 
        super(MandosClientWidget, self).properties_changed(
387
 
            interface, properties, invalidated)
388
 
        if any(old_values[key] != self.properties.get(key)
389
 
               for key in old_values):
390
 
            self.update()
391
 
 
392
 
 
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
 
class ConstrainedListBox(urwid.ListBox):
404
 
    """Like a normal urwid.ListBox, but will consume all "up" or
405
 
    "down" key presses, thus not allowing any containing widgets to
406
 
    use them as an excuse to shift focus away from this widget.
407
 
    """
408
 
    def keypress(self, *args, **kwargs):
409
 
        ret = (super(ConstrainedListBox, self)
410
 
               .keypress(*args, **kwargs))
411
 
        if ret in ("up", "down"):
412
 
            return
413
 
        return ret
414
 
 
415
 
 
416
 
class UserInterface:
417
 
    """This is the entire user interface - the whole screen
418
 
    with boxes, lists of client widgets, etc.
419
 
    """
420
 
    def __init__(self, max_log_length=1000):
421
 
        DBusGMainLoop(set_as_default=True)
422
 
 
423
 
        self.screen = urwid.curses_display.Screen()
424
 
 
425
 
        self.screen.register_palette((
426
 
                ("normal",
427
 
                 "default", "default", None),
428
 
                ("bold",
429
 
                 "bold", "default", "bold"),
430
 
                ("underline-blink",
431
 
                 "underline,blink", "default", "underline,blink"),
432
 
                ("standout",
433
 
                 "standout", "default", "standout"),
434
 
                ("bold-underline-blink",
435
 
                 "bold,underline,blink", "default",
436
 
                 "bold,underline,blink"),
437
 
                ("bold-standout",
438
 
                 "bold,standout", "default", "bold,standout"),
439
 
                ("underline-blink-standout",
440
 
                 "underline,blink,standout", "default",
441
 
                 "underline,blink,standout"),
442
 
                ("bold-underline-blink-standout",
443
 
                 "bold,underline,blink,standout", "default",
444
 
                 "bold,underline,blink,standout"),
445
 
                ))
446
 
 
447
 
        if urwid.supports_unicode():
448
 
            self.divider = "─"  # \u2500
449
 
        else:
450
 
            self.divider = "_"  # \u005f
451
 
 
452
 
        self.screen.start()
453
 
 
454
 
        self.size = self.screen.get_cols_rows()
455
 
 
456
 
        self.clients = urwid.SimpleListWalker([])
457
 
        self.clients_dict = {}
458
 
 
459
 
        # We will add Text widgets to this list
460
 
        self.log = urwid.SimpleListWalker([])
461
 
        self.max_log_length = max_log_length
462
 
 
463
 
        # We keep a reference to the log widget so we can remove it
464
 
        # from the ListWalker without it getting destroyed
465
 
        self.logbox = ConstrainedListBox(self.log)
466
 
 
467
 
        # This keeps track of whether self.uilist currently has
468
 
        # self.logbox in it or not
469
 
        self.log_visible = True
470
 
        self.log_wrap = "any"
471
 
 
472
 
        self.loghandler = UILogHandler(self)
473
 
 
474
 
        self.rebuild()
475
 
        self.add_log_line(("bold",
476
 
                           "Mandos Monitor version " + version))
477
 
        self.add_log_line(("bold", "q: Quit  ?: Help"))
478
 
 
479
 
        self.busname = domain + ".Mandos"
480
 
        self.main_loop = GLib.MainLoop()
481
 
 
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)
485
 
 
486
 
    def rebuild(self):
487
 
        """This rebuilds the User Interface.
488
 
        Call this when the widget layout needs to change"""
489
 
        self.uilist = []
490
 
        # self.uilist.append(urwid.ListBox(self.clients))
491
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
492
 
                                                          clients),
493
 
                                       # header=urwid.Divider(),
494
 
                                       header=None,
495
 
                                       footer=urwid.Divider(
496
 
                                           div_char=self.divider)))
497
 
        if self.log_visible:
498
 
            self.uilist.append(self.logbox)
499
 
        self.topwidget = urwid.Pile(self.uilist)
500
 
 
501
 
    def add_log_line(self, markup):
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)]
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
 
        log.debug("Log visibility changed to: %s", self.log_visible)
515
 
 
516
 
    def change_log_display(self):
517
 
        """Change type of log display.
518
 
        Currently, this toggles wrapping of text lines."""
519
 
        if self.log_wrap == "clip":
520
 
            self.log_wrap = "any"
521
 
        else:
522
 
            self.log_wrap = "clip"
523
 
        for textwidget in self.log:
524
 
            textwidget.set_wrap_mode(self.log_wrap)
525
 
        log.debug("Wrap mode: %s", self.log_wrap)
526
 
 
527
 
    def find_and_remove_client(self, path, interfaces):
528
 
        """Find a client by its object path and remove it.
529
 
 
530
 
        This is connected to the InterfacesRemoved signal from the
531
 
        Mandos server object."""
532
 
        if client_interface not in interfaces:
533
 
            # Not a Mandos client object; ignore
534
 
            return
535
 
        try:
536
 
            client = self.clients_dict[path]
537
 
        except KeyError:
538
 
            # not found?
539
 
            log.warning("Unknown client %s removed", path)
540
 
            return
541
 
        client.delete()
542
 
 
543
 
    def add_new_client(self, path, ifs_and_props):
544
 
        """Find a client by its object path and remove it.
545
 
 
546
 
        This is connected to the InterfacesAdded signal from the
547
 
        Mandos server object.
548
 
        """
549
 
        if client_interface not in ifs_and_props:
550
 
            # Not a Mandos client object; ignore
551
 
            return
552
 
        client_proxy_object = self.bus.get_object(self.busname, path)
553
 
        self.add_client(MandosClientWidget(
554
 
            server_proxy_object=self.mandos_serv,
555
 
            proxy_object=client_proxy_object,
556
 
            update_hook=self.refresh,
557
 
            delete_hook=self.remove_client,
558
 
            properties=dict(ifs_and_props[client_interface])),
559
 
                        path=path)
560
 
 
561
 
    def add_client(self, client, path=None):
562
 
        self.clients.append(client)
563
 
        if path is None:
564
 
            path = client.proxy.object_path
565
 
        self.clients_dict[path] = client
566
 
        self.clients.sort(key=lambda c: c.properties["Name"])
567
 
        self.refresh()
568
 
 
569
 
    def remove_client(self, client, path=None):
570
 
        self.clients.remove(client)
571
 
        if path is None:
572
 
            path = client.proxy.object_path
573
 
        del self.clients_dict[path]
574
 
        self.refresh()
575
 
 
576
 
    def refresh(self):
577
 
        """Redraw the screen"""
578
 
        canvas = self.topwidget.render(self.size, focus=True)
579
 
        self.screen.draw_screen(self.size, canvas)
580
 
 
581
 
    def run(self):
582
 
        """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
 
        self.bus = dbus.SystemBus()
589
 
        mandos_dbus_objc = self.bus.get_object(
590
 
            self.busname, "/", follow_name_owner_changes=True)
591
 
        self.mandos_serv = dbus.Interface(
592
 
            mandos_dbus_objc, dbus_interface=server_interface)
593
 
        try:
594
 
            mandos_clients = (self.mandos_serv
595
 
                              .GetAllClientsWithProperties())
596
 
            if not mandos_clients:
597
 
                log.warning("Note: Server has no clients.")
598
 
        except dbus.exceptions.DBusException:
599
 
            log.warning("Note: No Mandos server running.")
600
 
            mandos_clients = dbus.Dictionary()
601
 
 
602
 
        (self.mandos_serv
603
 
         .connect_to_signal("InterfacesRemoved",
604
 
                            self.find_and_remove_client,
605
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
606
 
                            byte_arrays=True))
607
 
        (self.mandos_serv
608
 
         .connect_to_signal("InterfacesAdded",
609
 
                            self.add_new_client,
610
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
611
 
                            byte_arrays=True))
612
 
        (self.mandos_serv
613
 
         .connect_to_signal("ClientNotFound",
614
 
                            self.client_not_found,
615
 
                            dbus_interface=server_interface,
616
 
                            byte_arrays=True))
617
 
        for path, client in mandos_clients.items():
618
 
            client_proxy_object = self.bus.get_object(self.busname,
619
 
                                                      path)
620
 
            self.add_client(MandosClientWidget(
621
 
                server_proxy_object=self.mandos_serv,
622
 
                proxy_object=client_proxy_object,
623
 
                properties=client,
624
 
                update_hook=self.refresh,
625
 
                delete_hook=self.remove_client),
626
 
                            path=path)
627
 
 
628
 
        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)))
634
 
        self.main_loop.run()
635
 
        # Main loop has finished, we should close everything now
636
 
        GLib.source_remove(self._input_callback_tag)
637
 
        with warnings.catch_warnings():
638
 
            warnings.simplefilter("ignore", BytesWarning)
639
 
            self.screen.stop()
640
 
 
641
 
    def stop(self):
642
 
        self.main_loop.quit()
643
 
        log.removeHandler(self.loghandler)
644
 
        log.propagate = self.orig_log_propagate
645
 
 
646
 
    def process_input(self, source, condition):
647
 
        keys = self.screen.get_input()
648
 
        translations = {"ctrl n": "down",       # Emacs
649
 
                        "ctrl p": "up",         # Emacs
650
 
                        "ctrl v": "page down",  # Emacs
651
 
                        "meta v": "page up",    # Emacs
652
 
                        " ": "page down",       # less
653
 
                        "f": "page down",       # less
654
 
                        "b": "page up",         # less
655
 
                        "j": "down",            # vi
656
 
                        "k": "up",              # vi
657
 
                        }
658
 
        for key in keys:
659
 
            try:
660
 
                key = translations[key]
661
 
            except KeyError:    # :-)
662
 
                pass
663
 
 
664
 
            if key == "q" or key == "Q":
665
 
                self.stop()
666
 
                break
667
 
            elif key == "window resize":
668
 
                self.size = self.screen.get_cols_rows()
669
 
                self.refresh()
670
 
            elif key == "ctrl l":
671
 
                self.screen.clear()
672
 
                self.refresh()
673
 
            elif key == "l" or key == "D":
674
 
                self.toggle_log_display()
675
 
                self.refresh()
676
 
            elif key == "w" or key == "i":
677
 
                self.change_log_display()
678
 
                self.refresh()
679
 
            elif key == "?" or key == "f1" or key == "esc":
680
 
                if not self.log_visible:
681
 
                    self.log_visible = True
682
 
                    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
 
                                   ))))
702
 
                self.refresh()
703
 
            elif key == "tab":
704
 
                if self.topwidget.get_focus() is self.logbox:
705
 
                    self.topwidget.set_focus(0)
706
 
                else:
707
 
                    self.topwidget.set_focus(self.logbox)
708
 
                self.refresh()
709
 
            elif key == "v":
710
 
                if log.level < logging.INFO:
711
 
                    log.setLevel(logging.INFO)
712
 
                    log.info("Verbose mode: Off")
713
 
                else:
714
 
                    log.setLevel(logging.NOTSET)
715
 
                    log.info("Verbose mode: On")
716
 
            # elif (key == "end" or key == "meta >" or key == "G"
717
 
            #       or key == ">"):
718
 
            #     pass            # xxx end-of-buffer
719
 
            # elif (key == "home" or key == "meta <" or key == "g"
720
 
            #       or key == "<"):
721
 
            #     pass            # xxx beginning-of-buffer
722
 
            # elif key == "ctrl e" or key == "$":
723
 
            #     pass            # xxx move-end-of-line
724
 
            # elif key == "ctrl a" or key == "^":
725
 
            #     pass            # xxx move-beginning-of-line
726
 
            # elif key == "ctrl b" or key == "meta (" or key == "h":
727
 
            #     pass            # xxx left
728
 
            # elif key == "ctrl f" or key == "meta )" or key == "l":
729
 
            #     pass            # xxx right
730
 
            # elif key == "a":
731
 
            #     pass            # scroll up log
732
 
            # elif key == "z":
733
 
            #     pass            # scroll down log
734
 
            elif self.topwidget.selectable():
735
 
                self.topwidget.keypress(self.size, key)
736
 
                self.refresh()
737
 
        return True
738
 
 
739
 
 
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
 
ui = UserInterface()
754
 
try:
755
 
    ui.run()
756
 
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()
764
 
    raise