/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2008-09-17 00:34:09 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080917003409-bxbjsc4o69nx40t6
* .bzr-builddeb/default.conf: New.

* Makefile (install-server): Do not create directories that
                             should already be present in a
                             normal system.
  (install-client-nokey): - '' -  Also specify non-executable
                          mode for "initramfs-tools-hook-conf".

* README: Improved wording.  Use real copyright mark.

* debian/changelog: New.
* debian/compat: - '' -
* debian/control: - '' -
* debian/copyright: - '' -
* debian/mandos-client.README.Debian: - '' -
* debian/mandos-client.dirs: - '' -
* debian/mandos-client.lintian-overrides: - '' -
* debian/mandos-client.postinst: - '' -
* debian/mandos-client.postrm: - '' -
* debian/mandos.dirs: - '' -
* debian/mandos.lintian-overrides: - '' -
* debian/rules: - '' -
* default-mandos: - '' -

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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 = "1.7.20"
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