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  • Committer: Teddy Hogeborn
  • Date: 2008-11-11 16:07:18 UTC
  • mto: (24.1.113 mandos)
  • mto: This revision was merged to the branch mainline in revision 238.
  • Revision ID: teddy@fukt.bsnet.se-20081111160718-gvqhs581md4inh5u
Further steps towards a D-Bus server interface, plus minor syntax
changes.

* mandos: Split copyright line.  Throughout, use parentheses instead
          of backslashes to continue long lines.
  (AvahiService.__init__): Use new "foo if bar else baz" syntax.
  (Client): All D-Bus methods renamed to be capitalized.
  (Client.__init__): Use D-Bus path "/Mandos/clients/%s".
  (Client.created): Changed to always be in UTC.  All users changed.
  (Client.started): Changed to be a "datetime.datetime()" in UTC.  All
                    users changed.
  (Client.stop): Bug fix: set "self.started" to "None".
  (Client.interface): Renamed to "_interface".
  (Client._datetime_to_dbus_struct): New temporary function.
  (Client.CheckerIsRunning): New D-Bus method.
  (Client.GetChecker): - '' -
  (Client.GetCreated): - '' -
  (Client.GetHost): - '' -
  (Client.GetStarted): - '' -
  (Client.SetHost): - '' -
  (Client.SetChecker): - '' -
  (Client.SetInterval): - '' -
  (Client.SetTimeout): - '' -
  (Client.StartChecker): - '' -
  (Client.TimeoutChanged): New D-Bus signal.
  (TCP_handler.handle): Use new "for...else" syntax.
  (main): Bug fix: get a D-Bus bus name.

* mandos-keygen: Split copyright line.
* plugin-runner.c: - '' -
* plugins.d/mandos-client: - '' -
* plugins.d/password-prompt.c: - '' -

* plugins.d/askpass-fifo.c: Added copyright statement and license.
* plugins.s/splashy.c: - '' -
* plugins.d/usplash.c: - '' -

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Lines of Context:
mandos-monitor
1
 
#!/usr/bin/python3 -bb
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
 
import warnings
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
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
55
 
logging.basicConfig(level="NOTSET", # Show all messages
56
 
                    format="%(message)s") # Show basic log messages
57
 
 
58
 
logging.captureWarnings(True)   # Show warnings via the logging system
59
 
 
60
 
locale.setlocale(locale.LC_ALL, '')
61
 
 
62
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
63
 
 
64
 
# Some useful constants
65
 
domain = 'se.recompile'
66
 
server_interface = domain + '.Mandos'
67
 
client_interface = domain + '.Mandos.Client'
68
 
version = "1.8.9"
69
 
 
70
 
try:
71
 
    dbus.OBJECT_MANAGER_IFACE
72
 
except AttributeError:
73
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
74
 
 
75
 
 
76
 
def isoformat_to_datetime(iso):
77
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
78
 
    if not iso:
79
 
        return None
80
 
    d, t = iso.split("T", 1)
81
 
    year, month, day = d.split("-", 2)
82
 
    hour, minute, second = t.split(":", 2)
83
 
    second, fraction = divmod(float(second), 1)
84
 
    return datetime.datetime(int(year),
85
 
                             int(month),
86
 
                             int(day),
87
 
                             int(hour),
88
 
                             int(minute),
89
 
                             int(second),            # Whole seconds
90
 
                             int(fraction*1000000))  # Microseconds
91
 
 
92
 
 
93
 
class MandosClientPropertyCache(object):
94
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
95
 
    properties and calls a hook function when any of them are
96
 
    changed.
97
 
    """
98
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
99
 
        self.proxy = proxy_object  # Mandos Client proxy object
100
 
        self.properties = dict() if properties is None else properties
101
 
        self.property_changed_match = (
102
 
            self.proxy.connect_to_signal("PropertiesChanged",
103
 
                                         self.properties_changed,
104
 
                                         dbus.PROPERTIES_IFACE,
105
 
                                         byte_arrays=True))
106
 
 
107
 
        if properties is None:
108
 
            self.properties.update(self.proxy.GetAll(
109
 
                client_interface,
110
 
                dbus_interface=dbus.PROPERTIES_IFACE))
111
 
 
112
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
113
 
 
114
 
    def properties_changed(self, interface, properties, invalidated):
115
 
        """This is called whenever we get a PropertiesChanged signal
116
 
        It updates the changed properties in the "properties" dict.
117
 
        """
118
 
        # Update properties dict with new value
119
 
        if interface == client_interface:
120
 
            self.properties.update(properties)
121
 
 
122
 
    def delete(self):
123
 
        self.property_changed_match.remove()
124
 
 
125
 
 
126
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
127
 
    """A Mandos Client which is visible on the screen.
128
 
    """
129
 
 
130
 
    def __init__(self, server_proxy_object=None, update_hook=None,
131
 
                 delete_hook=None, **kwargs):
132
 
        # Called on update
133
 
        self.update_hook = update_hook
134
 
        # Called on delete
135
 
        self.delete_hook = delete_hook
136
 
        # Mandos Server proxy object
137
 
        self.server_proxy_object = server_proxy_object
138
 
 
139
 
        self._update_timer_callback_tag = None
140
 
 
141
 
        # The widget shown normally
142
 
        self._text_widget = urwid.Text("")
143
 
        # The widget shown when we have focus
144
 
        self._focus_text_widget = urwid.Text("")
145
 
        super(MandosClientWidget, self).__init__(**kwargs)
146
 
        self.update()
147
 
        self.opened = False
148
 
 
149
 
        self.match_objects = (
150
 
            self.proxy.connect_to_signal("CheckerCompleted",
151
 
                                         self.checker_completed,
152
 
                                         client_interface,
153
 
                                         byte_arrays=True),
154
 
            self.proxy.connect_to_signal("CheckerStarted",
155
 
                                         self.checker_started,
156
 
                                         client_interface,
157
 
                                         byte_arrays=True),
158
 
            self.proxy.connect_to_signal("GotSecret",
159
 
                                         self.got_secret,
160
 
                                         client_interface,
161
 
                                         byte_arrays=True),
162
 
            self.proxy.connect_to_signal("NeedApproval",
163
 
                                         self.need_approval,
164
 
                                         client_interface,
165
 
                                         byte_arrays=True),
166
 
            self.proxy.connect_to_signal("Rejected",
167
 
                                         self.rejected,
168
 
                                         client_interface,
169
 
                                         byte_arrays=True))
170
 
        log.debug('Created client %s', self.properties["Name"])
171
 
 
172
 
    def using_timer(self, flag):
173
 
        """Call this method with True or False when timer should be
174
 
        activated or deactivated.
175
 
        """
176
 
        if flag and self._update_timer_callback_tag is None:
177
 
            # Will update the shown timer value every second
178
 
            self._update_timer_callback_tag = (
179
 
                GLib.timeout_add(1000,
180
 
                                 glib_safely(self.update_timer)))
181
 
        elif not (flag or self._update_timer_callback_tag is None):
182
 
            GLib.source_remove(self._update_timer_callback_tag)
183
 
            self._update_timer_callback_tag = None
184
 
 
185
 
    def checker_completed(self, exitstatus, condition, command):
186
 
        if exitstatus == 0:
187
 
            log.debug('Checker for client %s (command "%s")'
188
 
                      ' succeeded', self.properties["Name"], command)
189
 
            self.update()
190
 
            return
191
 
        # Checker failed
192
 
        if os.WIFEXITED(condition):
193
 
            log.info('Checker for client %s (command "%s") failed'
194
 
                     ' with exit code %d', self.properties["Name"],
195
 
                     command, os.WEXITSTATUS(condition))
196
 
        elif os.WIFSIGNALED(condition):
197
 
            log.info('Checker for client %s (command "%s") was'
198
 
                     ' killed by signal %d', self.properties["Name"],
199
 
                     command, os.WTERMSIG(condition))
200
 
        self.update()
201
 
 
202
 
    def checker_started(self, command):
203
 
        """Server signals that a checker started."""
204
 
        log.debug('Client %s started checker "%s"',
205
 
                  self.properties["Name"], command)
206
 
 
207
 
    def got_secret(self):
208
 
        log.info("Client %s received its secret",
209
 
                 self.properties["Name"])
210
 
 
211
 
    def need_approval(self, timeout, default):
212
 
        if not default:
213
 
            message = "Client %s needs approval within %f seconds"
214
 
        else:
215
 
            message = "Client %s will get its secret in %f seconds"
216
 
        log.info(message, self.properties["Name"], timeout/1000)
217
 
 
218
 
    def rejected(self, reason):
219
 
        log.info("Client %s was rejected; reason: %s",
220
 
                 self.properties["Name"], reason)
221
 
 
222
 
    def selectable(self):
223
 
        """Make this a "selectable" widget.
224
 
        This overrides the method from urwid.FlowWidget."""
225
 
        return True
226
 
 
227
 
    def rows(self, maxcolrow, focus=False):
228
 
        """How many rows this widget will occupy might depend on
229
 
        whether we have focus or not.
230
 
        This overrides the method from urwid.FlowWidget"""
231
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
232
 
 
233
 
    def current_widget(self, focus=False):
234
 
        if focus or self.opened:
235
 
            return self._focus_widget
236
 
        return self._widget
237
 
 
238
 
    def update(self):
239
 
        "Called when what is visible on the screen should be updated."
240
 
        # How to add standout mode to a style
241
 
        with_standout = {"normal": "standout",
242
 
                         "bold": "bold-standout",
243
 
                         "underline-blink":
244
 
                         "underline-blink-standout",
245
 
                         "bold-underline-blink":
246
 
                         "bold-underline-blink-standout",
247
 
                         }
248
 
 
249
 
        # Rebuild focus and non-focus widgets using current properties
250
 
 
251
 
        # Base part of a client. Name!
252
 
        base = '{name}: '.format(name=self.properties["Name"])
253
 
        if not self.properties["Enabled"]:
254
 
            message = "DISABLED"
255
 
            self.using_timer(False)
256
 
        elif self.properties["ApprovalPending"]:
257
 
            timeout = datetime.timedelta(
258
 
                milliseconds=self.properties["ApprovalDelay"])
259
 
            last_approval_request = isoformat_to_datetime(
260
 
                self.properties["LastApprovalRequest"])
261
 
            if last_approval_request is not None:
262
 
                timer = max(timeout - (datetime.datetime.utcnow()
263
 
                                       - last_approval_request),
264
 
                            datetime.timedelta())
265
 
            else:
266
 
                timer = datetime.timedelta()
267
 
            if self.properties["ApprovedByDefault"]:
268
 
                message = "Approval in {}. (d)eny?"
269
 
            else:
270
 
                message = "Denial in {}. (a)pprove?"
271
 
            message = message.format(str(timer).rsplit(".", 1)[0])
272
 
            self.using_timer(True)
273
 
        elif self.properties["LastCheckerStatus"] != 0:
274
 
            # When checker has failed, show timer until client expires
275
 
            expires = self.properties["Expires"]
276
 
            if expires == "":
277
 
                timer = datetime.timedelta(0)
278
 
            else:
279
 
                expires = (datetime.datetime.strptime
280
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
281
 
                timer = max(expires - datetime.datetime.utcnow(),
282
 
                            datetime.timedelta())
283
 
            message = ('A checker has failed! Time until client'
284
 
                       ' gets disabled: {}'
285
 
                       .format(str(timer).rsplit(".", 1)[0]))
286
 
            self.using_timer(True)
287
 
        else:
288
 
            message = "enabled"
289
 
            self.using_timer(False)
290
 
        self._text = "{}{}".format(base, message)
291
 
 
292
 
        if not urwid.supports_unicode():
293
 
            self._text = self._text.encode("ascii", "replace")
294
 
        textlist = [("normal", self._text)]
295
 
        self._text_widget.set_text(textlist)
296
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
297
 
                                           text[1])
298
 
                                          if isinstance(text, tuple)
299
 
                                          else text
300
 
                                          for text in textlist])
301
 
        self._widget = self._text_widget
302
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
303
 
                                            "standout")
304
 
        # Run update hook, if any
305
 
        if self.update_hook is not None:
306
 
            self.update_hook()
307
 
 
308
 
    def update_timer(self):
309
 
        """called by GLib. Will indefinitely loop until
310
 
        GLib.source_remove() on tag is called
311
 
        """
312
 
        self.update()
313
 
        return True             # Keep calling this
314
 
 
315
 
    def delete(self, **kwargs):
316
 
        if self._update_timer_callback_tag is not None:
317
 
            GLib.source_remove(self._update_timer_callback_tag)
318
 
            self._update_timer_callback_tag = None
319
 
        for match in self.match_objects:
320
 
            match.remove()
321
 
        self.match_objects = ()
322
 
        if self.delete_hook is not None:
323
 
            self.delete_hook(self)
324
 
        return super(MandosClientWidget, self).delete(**kwargs)
325
 
 
326
 
    def render(self, maxcolrow, focus=False):
327
 
        """Render differently if we have focus.
328
 
        This overrides the method from urwid.FlowWidget"""
329
 
        return self.current_widget(focus).render(maxcolrow,
330
 
                                                 focus=focus)
331
 
 
332
 
    def keypress(self, maxcolrow, key):
333
 
        """Handle keys.
334
 
        This overrides the method from urwid.FlowWidget"""
335
 
        if key == "+":
336
 
            self.proxy.Set(client_interface, "Enabled",
337
 
                           dbus.Boolean(True), ignore_reply=True,
338
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
339
 
        elif key == "-":
340
 
            self.proxy.Set(client_interface, "Enabled", False,
341
 
                           ignore_reply=True,
342
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
343
 
        elif key == "a":
344
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
345
 
                               dbus_interface=client_interface,
346
 
                               ignore_reply=True)
347
 
        elif key == "d":
348
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
349
 
                               dbus_interface=client_interface,
350
 
                               ignore_reply=True)
351
 
        elif key == "R" or key == "_" or key == "ctrl k":
352
 
            self.server_proxy_object.RemoveClient(self.proxy
353
 
                                                  .object_path,
354
 
                                                  ignore_reply=True)
355
 
        elif key == "s":
356
 
            self.proxy.Set(client_interface, "CheckerRunning",
357
 
                           dbus.Boolean(True), ignore_reply=True,
358
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
359
 
        elif key == "S":
360
 
            self.proxy.Set(client_interface, "CheckerRunning",
361
 
                           dbus.Boolean(False), ignore_reply=True,
362
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
363
 
        elif key == "C":
364
 
            self.proxy.CheckedOK(dbus_interface=client_interface,
365
 
                                 ignore_reply=True)
366
 
        # xxx
367
 
#         elif key == "p" or key == "=":
368
 
#             self.proxy.pause()
369
 
#         elif key == "u" or key == ":":
370
 
#             self.proxy.unpause()
371
 
#         elif key == "RET":
372
 
#             self.open()
373
 
        else:
374
 
            return key
375
 
 
376
 
    def properties_changed(self, interface, properties, invalidated):
377
 
        """Call self.update() if any properties changed.
378
 
        This overrides the method from MandosClientPropertyCache"""
379
 
        old_values = {key: self.properties.get(key)
380
 
                      for key in properties.keys()}
381
 
        super(MandosClientWidget, self).properties_changed(
382
 
            interface, properties, invalidated)
383
 
        if any(old_values[key] != self.properties.get(key)
384
 
               for key in old_values):
385
 
            self.update()
386
 
 
387
 
 
388
 
def glib_safely(func, retval=True):
389
 
    def safe_func(*args, **kwargs):
390
 
        try:
391
 
            return func(*args, **kwargs)
392
 
        except Exception:
393
 
            log.exception("")
394
 
            return retval
395
 
    return safe_func
396
 
 
397
 
 
398
 
class ConstrainedListBox(urwid.ListBox):
399
 
    """Like a normal urwid.ListBox, but will consume all "up" or
400
 
    "down" key presses, thus not allowing any containing widgets to
401
 
    use them as an excuse to shift focus away from this widget.
402
 
    """
403
 
    def keypress(self, *args, **kwargs):
404
 
        ret = (super(ConstrainedListBox, self)
405
 
               .keypress(*args, **kwargs))
406
 
        if ret in ("up", "down"):
407
 
            return
408
 
        return ret
409
 
 
410
 
 
411
 
class UserInterface(object):
412
 
    """This is the entire user interface - the whole screen
413
 
    with boxes, lists of client widgets, etc.
414
 
    """
415
 
    def __init__(self, max_log_length=1000):
416
 
        DBusGMainLoop(set_as_default=True)
417
 
 
418
 
        self.screen = urwid.curses_display.Screen()
419
 
 
420
 
        self.screen.register_palette((
421
 
                ("normal",
422
 
                 "default", "default", None),
423
 
                ("bold",
424
 
                 "bold", "default", "bold"),
425
 
                ("underline-blink",
426
 
                 "underline,blink", "default", "underline,blink"),
427
 
                ("standout",
428
 
                 "standout", "default", "standout"),
429
 
                ("bold-underline-blink",
430
 
                 "bold,underline,blink", "default",
431
 
                 "bold,underline,blink"),
432
 
                ("bold-standout",
433
 
                 "bold,standout", "default", "bold,standout"),
434
 
                ("underline-blink-standout",
435
 
                 "underline,blink,standout", "default",
436
 
                 "underline,blink,standout"),
437
 
                ("bold-underline-blink-standout",
438
 
                 "bold,underline,blink,standout", "default",
439
 
                 "bold,underline,blink,standout"),
440
 
                ))
441
 
 
442
 
        if urwid.supports_unicode():
443
 
            self.divider = "─"  # \u2500
444
 
        else:
445
 
            self.divider = "_"  # \u005f
446
 
 
447
 
        self.screen.start()
448
 
 
449
 
        self.size = self.screen.get_cols_rows()
450
 
 
451
 
        self.clients = urwid.SimpleListWalker([])
452
 
        self.clients_dict = {}
453
 
 
454
 
        # We will add Text widgets to this list
455
 
        self.log = urwid.SimpleListWalker([])
456
 
        self.max_log_length = max_log_length
457
 
 
458
 
        # We keep a reference to the log widget so we can remove it
459
 
        # from the ListWalker without it getting destroyed
460
 
        self.logbox = ConstrainedListBox(self.log)
461
 
 
462
 
        # This keeps track of whether self.uilist currently has
463
 
        # self.logbox in it or not
464
 
        self.log_visible = True
465
 
        self.log_wrap = "any"
466
 
 
467
 
        self.loghandler = UILogHandler(self)
468
 
 
469
 
        self.rebuild()
470
 
        self.add_log_line(("bold",
471
 
                           "Mandos Monitor version " + version))
472
 
        self.add_log_line(("bold", "q: Quit  ?: Help"))
473
 
 
474
 
        self.busname = domain + '.Mandos'
475
 
        self.main_loop = GLib.MainLoop()
476
 
 
477
 
    def client_not_found(self, key_id, address):
478
 
        log.info("Client with address %s and key ID %s could"
479
 
                 " not be found", address, key_id)
480
 
 
481
 
    def rebuild(self):
482
 
        """This rebuilds the User Interface.
483
 
        Call this when the widget layout needs to change"""
484
 
        self.uilist = []
485
 
        # self.uilist.append(urwid.ListBox(self.clients))
486
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
487
 
                                                          clients),
488
 
                                       # header=urwid.Divider(),
489
 
                                       header=None,
490
 
                                       footer=urwid.Divider(
491
 
                                           div_char=self.divider)))
492
 
        if self.log_visible:
493
 
            self.uilist.append(self.logbox)
494
 
        self.topwidget = urwid.Pile(self.uilist)
495
 
 
496
 
    def add_log_line(self, markup):
497
 
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
498
 
        if self.max_log_length:
499
 
            if len(self.log) > self.max_log_length:
500
 
                del self.log[0:(len(self.log) - self.max_log_length)]
501
 
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
502
 
                              coming_from="above")
503
 
        self.refresh()
504
 
 
505
 
    def toggle_log_display(self):
506
 
        """Toggle visibility of the log buffer."""
507
 
        self.log_visible = not self.log_visible
508
 
        self.rebuild()
509
 
        log.debug("Log visibility changed to: %s", self.log_visible)
510
 
 
511
 
    def change_log_display(self):
512
 
        """Change type of log display.
513
 
        Currently, this toggles wrapping of text lines."""
514
 
        if self.log_wrap == "clip":
515
 
            self.log_wrap = "any"
516
 
        else:
517
 
            self.log_wrap = "clip"
518
 
        for textwidget in self.log:
519
 
            textwidget.set_wrap_mode(self.log_wrap)
520
 
        log.debug("Wrap mode: %s", self.log_wrap)
521
 
 
522
 
    def find_and_remove_client(self, path, interfaces):
523
 
        """Find a client by its object path and remove it.
524
 
 
525
 
        This is connected to the InterfacesRemoved signal from the
526
 
        Mandos server object."""
527
 
        if client_interface not in interfaces:
528
 
            # Not a Mandos client object; ignore
529
 
            return
530
 
        try:
531
 
            client = self.clients_dict[path]
532
 
        except KeyError:
533
 
            # not found?
534
 
            log.warning("Unknown client %s removed", path)
535
 
            return
536
 
        client.delete()
537
 
 
538
 
    def add_new_client(self, path, ifs_and_props):
539
 
        """Find a client by its object path and remove it.
540
 
 
541
 
        This is connected to the InterfacesAdded signal from the
542
 
        Mandos server object.
543
 
        """
544
 
        if client_interface not in ifs_and_props:
545
 
            # Not a Mandos client object; ignore
546
 
            return
547
 
        client_proxy_object = self.bus.get_object(self.busname, path)
548
 
        self.add_client(MandosClientWidget(
549
 
            server_proxy_object=self.mandos_serv,
550
 
            proxy_object=client_proxy_object,
551
 
            update_hook=self.refresh,
552
 
            delete_hook=self.remove_client,
553
 
            properties=dict(ifs_and_props[client_interface])),
554
 
                        path=path)
555
 
 
556
 
    def add_client(self, client, path=None):
557
 
        self.clients.append(client)
558
 
        if path is None:
559
 
            path = client.proxy.object_path
560
 
        self.clients_dict[path] = client
561
 
        self.clients.sort(key=lambda c: c.properties["Name"])
562
 
        self.refresh()
563
 
 
564
 
    def remove_client(self, client, path=None):
565
 
        self.clients.remove(client)
566
 
        if path is None:
567
 
            path = client.proxy.object_path
568
 
        del self.clients_dict[path]
569
 
        self.refresh()
570
 
 
571
 
    def refresh(self):
572
 
        """Redraw the screen"""
573
 
        canvas = self.topwidget.render(self.size, focus=True)
574
 
        self.screen.draw_screen(self.size, canvas)
575
 
 
576
 
    def run(self):
577
 
        """Start the main loop and exit when it's done."""
578
 
        log.addHandler(self.loghandler)
579
 
        self.orig_log_propagate = log.propagate
580
 
        log.propagate = False
581
 
        self.orig_log_level = log.level
582
 
        log.setLevel("INFO")
583
 
        self.bus = dbus.SystemBus()
584
 
        mandos_dbus_objc = self.bus.get_object(
585
 
            self.busname, "/", follow_name_owner_changes=True)
586
 
        self.mandos_serv = dbus.Interface(
587
 
            mandos_dbus_objc, dbus_interface=server_interface)
588
 
        try:
589
 
            mandos_clients = (self.mandos_serv
590
 
                              .GetAllClientsWithProperties())
591
 
            if not mandos_clients:
592
 
                log.warning("Note: Server has no clients.")
593
 
        except dbus.exceptions.DBusException:
594
 
            log.warning("Note: No Mandos server running.")
595
 
            mandos_clients = dbus.Dictionary()
596
 
 
597
 
        (self.mandos_serv
598
 
         .connect_to_signal("InterfacesRemoved",
599
 
                            self.find_and_remove_client,
600
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
601
 
                            byte_arrays=True))
602
 
        (self.mandos_serv
603
 
         .connect_to_signal("InterfacesAdded",
604
 
                            self.add_new_client,
605
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
606
 
                            byte_arrays=True))
607
 
        (self.mandos_serv
608
 
         .connect_to_signal("ClientNotFound",
609
 
                            self.client_not_found,
610
 
                            dbus_interface=server_interface,
611
 
                            byte_arrays=True))
612
 
        for path, client in mandos_clients.items():
613
 
            client_proxy_object = self.bus.get_object(self.busname,
614
 
                                                      path)
615
 
            self.add_client(MandosClientWidget(
616
 
                server_proxy_object=self.mandos_serv,
617
 
                proxy_object=client_proxy_object,
618
 
                properties=client,
619
 
                update_hook=self.refresh,
620
 
                delete_hook=self.remove_client),
621
 
                            path=path)
622
 
 
623
 
        self.refresh()
624
 
        self._input_callback_tag = (
625
 
            GLib.io_add_watch(
626
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
627
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
628
 
                glib_safely(self.process_input)))
629
 
        self.main_loop.run()
630
 
        # Main loop has finished, we should close everything now
631
 
        GLib.source_remove(self._input_callback_tag)
632
 
        with warnings.catch_warnings():
633
 
            warnings.simplefilter("ignore", BytesWarning)
634
 
            self.screen.stop()
635
 
 
636
 
    def stop(self):
637
 
        self.main_loop.quit()
638
 
        log.removeHandler(self.loghandler)
639
 
        log.propagate = self.orig_log_propagate
640
 
 
641
 
    def process_input(self, source, condition):
642
 
        keys = self.screen.get_input()
643
 
        translations = {"ctrl n": "down",       # Emacs
644
 
                        "ctrl p": "up",         # Emacs
645
 
                        "ctrl v": "page down",  # Emacs
646
 
                        "meta v": "page up",    # Emacs
647
 
                        " ": "page down",       # less
648
 
                        "f": "page down",       # less
649
 
                        "b": "page up",         # less
650
 
                        "j": "down",            # vi
651
 
                        "k": "up",              # vi
652
 
                        }
653
 
        for key in keys:
654
 
            try:
655
 
                key = translations[key]
656
 
            except KeyError:    # :-)
657
 
                pass
658
 
 
659
 
            if key == "q" or key == "Q":
660
 
                self.stop()
661
 
                break
662
 
            elif key == "window resize":
663
 
                self.size = self.screen.get_cols_rows()
664
 
                self.refresh()
665
 
            elif key == "ctrl l":
666
 
                self.screen.clear()
667
 
                self.refresh()
668
 
            elif key == "l" or key == "D":
669
 
                self.toggle_log_display()
670
 
                self.refresh()
671
 
            elif key == "w" or key == "i":
672
 
                self.change_log_display()
673
 
                self.refresh()
674
 
            elif key == "?" or key == "f1" or key == "esc":
675
 
                if not self.log_visible:
676
 
                    self.log_visible = True
677
 
                    self.rebuild()
678
 
                self.add_log_line(("bold",
679
 
                                   "  ".join(("q: Quit",
680
 
                                              "?: Help",
681
 
                                              "l: Log window toggle",
682
 
                                              "TAB: Switch window",
683
 
                                              "w: Wrap (log lines)",
684
 
                                              "v: Toggle verbose log",
685
 
                                   ))))
686
 
                self.add_log_line(("bold",
687
 
                                   "  ".join(("Clients:",
688
 
                                              "+: Enable",
689
 
                                              "-: Disable",
690
 
                                              "R: Remove",
691
 
                                              "s: Start new checker",
692
 
                                              "S: Stop checker",
693
 
                                              "C: Checker OK",
694
 
                                              "a: Approve",
695
 
                                              "d: Deny",
696
 
                                   ))))
697
 
                self.refresh()
698
 
            elif key == "tab":
699
 
                if self.topwidget.get_focus() is self.logbox:
700
 
                    self.topwidget.set_focus(0)
701
 
                else:
702
 
                    self.topwidget.set_focus(self.logbox)
703
 
                self.refresh()
704
 
            elif key == "v":
705
 
                if log.level < logging.INFO:
706
 
                    log.setLevel(logging.INFO)
707
 
                    log.info("Verbose mode: Off")
708
 
                else:
709
 
                    log.setLevel(logging.NOTSET)
710
 
                    log.info("Verbose mode: On")
711
 
            # elif (key == "end" or key == "meta >" or key == "G"
712
 
            #       or key == ">"):
713
 
            #     pass            # xxx end-of-buffer
714
 
            # elif (key == "home" or key == "meta <" or key == "g"
715
 
            #       or key == "<"):
716
 
            #     pass            # xxx beginning-of-buffer
717
 
            # elif key == "ctrl e" or key == "$":
718
 
            #     pass            # xxx move-end-of-line
719
 
            # elif key == "ctrl a" or key == "^":
720
 
            #     pass            # xxx move-beginning-of-line
721
 
            # elif key == "ctrl b" or key == "meta (" or key == "h":
722
 
            #     pass            # xxx left
723
 
            # elif key == "ctrl f" or key == "meta )" or key == "l":
724
 
            #     pass            # xxx right
725
 
            # elif key == "a":
726
 
            #     pass            # scroll up log
727
 
            # elif key == "z":
728
 
            #     pass            # scroll down log
729
 
            elif self.topwidget.selectable():
730
 
                self.topwidget.keypress(self.size, key)
731
 
                self.refresh()
732
 
        return True
733
 
 
734
 
 
735
 
class UILogHandler(logging.Handler):
736
 
    def __init__(self, ui, *args, **kwargs):
737
 
        self.ui = ui
738
 
        super(UILogHandler, self).__init__(*args, **kwargs)
739
 
        self.setFormatter(
740
 
            logging.Formatter("%(asctime)s: %(message)s"))
741
 
    def emit(self, record):
742
 
        msg = self.format(record)
743
 
        if record.levelno > logging.INFO:
744
 
            msg = ("bold", msg)
745
 
        self.ui.add_log_line(msg)
746
 
 
747
 
 
748
 
ui = UserInterface()
749
 
try:
750
 
    ui.run()
751
 
except KeyboardInterrupt:
752
 
    with warnings.catch_warnings():
753
 
        warnings.filterwarnings("ignore", "", BytesWarning)
754
 
        ui.screen.stop()
755
 
except Exception:
756
 
    with warnings.catch_warnings():
757
 
        warnings.filterwarnings("ignore", "", BytesWarning)
758
 
        ui.screen.stop()
759
 
    raise