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Viewing changes to mandos-monitor

  • Committer: Teddy Hogeborn
  • Date: 2019-11-03 19:09:41 UTC
  • Revision ID: teddy@recompile.se-20191103190941-9gfivh2mjuvi4z3f
Add -I option to python 3 on the interpreter script ("shebang") line

* mandos: Add -I option to /usr/bin/python3.
* mandos-ctl: - '' -
* mandos-monitor: - '' -

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mandos-monitor
 
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
 
 
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
import locale
 
39
import logging
 
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
    str = unicode
 
51
 
 
52
log = logging.getLogger(os.path.basename(sys.argv[0]))
 
53
logging.basicConfig(level="NOTSET", # Show all messages
 
54
                    format="%(message)s") # Show basic log messages
 
55
 
 
56
logging.captureWarnings(True)   # Show warnings via the logging system
 
57
 
 
58
locale.setlocale(locale.LC_ALL, "")
 
59
 
 
60
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
 
61
 
 
62
# Some useful constants
 
63
domain = "se.recompile"
 
64
server_interface = domain + ".Mandos"
 
65
client_interface = domain + ".Mandos.Client"
 
66
version = "1.8.9"
 
67
 
 
68
try:
 
69
    dbus.OBJECT_MANAGER_IFACE
 
70
except AttributeError:
 
71
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
72
 
 
73
 
 
74
def isoformat_to_datetime(iso):
 
75
    "Parse an ISO 8601 date string to a datetime.datetime()"
 
76
    if not iso:
 
77
        return None
 
78
    d, t = iso.split("T", 1)
 
79
    year, month, day = d.split("-", 2)
 
80
    hour, minute, second = t.split(":", 2)
 
81
    second, fraction = divmod(float(second), 1)
 
82
    return datetime.datetime(int(year),
 
83
                             int(month),
 
84
                             int(day),
 
85
                             int(hour),
 
86
                             int(minute),
 
87
                             int(second),            # Whole seconds
 
88
                             int(fraction*1000000))  # Microseconds
 
89
 
 
90
 
 
91
class MandosClientPropertyCache(object):
 
92
    """This wraps a Mandos Client D-Bus proxy object, caches the
 
93
    properties and calls a hook function when any of them are
 
94
    changed.
 
95
    """
 
96
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
97
        self.proxy = proxy_object  # Mandos Client proxy object
 
98
        self.properties = dict() if properties is None else properties
 
99
        self.property_changed_match = (
 
100
            self.proxy.connect_to_signal("PropertiesChanged",
 
101
                                         self.properties_changed,
 
102
                                         dbus.PROPERTIES_IFACE,
 
103
                                         byte_arrays=True))
 
104
 
 
105
        if properties is None:
 
106
            self.properties.update(self.proxy.GetAll(
 
107
                client_interface,
 
108
                dbus_interface=dbus.PROPERTIES_IFACE))
 
109
 
 
110
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
111
 
 
112
    def properties_changed(self, interface, properties, invalidated):
 
113
        """This is called whenever we get a PropertiesChanged signal
 
114
        It updates the changed properties in the "properties" dict.
 
115
        """
 
116
        # Update properties dict with new value
 
117
        if interface == client_interface:
 
118
            self.properties.update(properties)
 
119
 
 
120
    def delete(self):
 
121
        self.property_changed_match.remove()
 
122
 
 
123
 
 
124
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
 
125
    """A Mandos Client which is visible on the screen.
 
126
    """
 
127
 
 
128
    def __init__(self, server_proxy_object=None, update_hook=None,
 
129
                 delete_hook=None, **kwargs):
 
130
        # Called on update
 
131
        self.update_hook = update_hook
 
132
        # Called on delete
 
133
        self.delete_hook = delete_hook
 
134
        # Mandos Server proxy object
 
135
        self.server_proxy_object = server_proxy_object
 
136
 
 
137
        self._update_timer_callback_tag = None
 
138
 
 
139
        # The widget shown normally
 
140
        self._text_widget = urwid.Text("")
 
141
        # The widget shown when we have focus
 
142
        self._focus_text_widget = urwid.Text("")
 
143
        super(MandosClientWidget, self).__init__(**kwargs)
 
144
        self.update()
 
145
        self.opened = False
 
146
 
 
147
        self.match_objects = (
 
148
            self.proxy.connect_to_signal("CheckerCompleted",
 
149
                                         self.checker_completed,
 
150
                                         client_interface,
 
151
                                         byte_arrays=True),
 
152
            self.proxy.connect_to_signal("CheckerStarted",
 
153
                                         self.checker_started,
 
154
                                         client_interface,
 
155
                                         byte_arrays=True),
 
156
            self.proxy.connect_to_signal("GotSecret",
 
157
                                         self.got_secret,
 
158
                                         client_interface,
 
159
                                         byte_arrays=True),
 
160
            self.proxy.connect_to_signal("NeedApproval",
 
161
                                         self.need_approval,
 
162
                                         client_interface,
 
163
                                         byte_arrays=True),
 
164
            self.proxy.connect_to_signal("Rejected",
 
165
                                         self.rejected,
 
166
                                         client_interface,
 
167
                                         byte_arrays=True))
 
168
        log.debug("Created client %s", self.properties["Name"])
 
169
 
 
170
    def using_timer(self, flag):
 
171
        """Call this method with True or False when timer should be
 
172
        activated or deactivated.
 
173
        """
 
174
        if flag and self._update_timer_callback_tag is None:
 
175
            # Will update the shown timer value every second
 
176
            self._update_timer_callback_tag = (
 
177
                GLib.timeout_add(1000,
 
178
                                 glib_safely(self.update_timer)))
 
179
        elif not (flag or self._update_timer_callback_tag is None):
 
180
            GLib.source_remove(self._update_timer_callback_tag)
 
181
            self._update_timer_callback_tag = None
 
182
 
 
183
    def checker_completed(self, exitstatus, condition, command):
 
184
        if exitstatus == 0:
 
185
            log.debug('Checker for client %s (command "%s")'
 
186
                      " succeeded", self.properties["Name"], command)
 
187
            self.update()
 
188
            return
 
189
        # Checker failed
 
190
        if os.WIFEXITED(condition):
 
191
            log.info('Checker for client %s (command "%s") failed'
 
192
                     " with exit code %d", self.properties["Name"],
 
193
                     command, os.WEXITSTATUS(condition))
 
194
        elif os.WIFSIGNALED(condition):
 
195
            log.info('Checker for client %s (command "%s") was'
 
196
                     " killed by signal %d", self.properties["Name"],
 
197
                     command, os.WTERMSIG(condition))
 
198
        self.update()
 
199
 
 
200
    def checker_started(self, command):
 
201
        """Server signals that a checker started."""
 
202
        log.debug('Client %s started checker "%s"',
 
203
                  self.properties["Name"], command)
 
204
 
 
205
    def got_secret(self):
 
206
        log.info("Client %s received its secret",
 
207
                 self.properties["Name"])
 
208
 
 
209
    def need_approval(self, timeout, default):
 
210
        if not default:
 
211
            message = "Client %s needs approval within %f seconds"
 
212
        else:
 
213
            message = "Client %s will get its secret in %f seconds"
 
214
        log.info(message, self.properties["Name"], timeout/1000)
 
215
 
 
216
    def rejected(self, reason):
 
217
        log.info("Client %s was rejected; reason: %s",
 
218
                 self.properties["Name"], reason)
 
219
 
 
220
    def selectable(self):
 
221
        """Make this a "selectable" widget.
 
222
        This overrides the method from urwid.FlowWidget."""
 
223
        return True
 
224
 
 
225
    def rows(self, maxcolrow, focus=False):
 
226
        """How many rows this widget will occupy might depend on
 
227
        whether we have focus or not.
 
228
        This overrides the method from urwid.FlowWidget"""
 
229
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
230
 
 
231
    def current_widget(self, focus=False):
 
232
        if focus or self.opened:
 
233
            return self._focus_widget
 
234
        return self._widget
 
235
 
 
236
    def update(self):
 
237
        "Called when what is visible on the screen should be updated."
 
238
        # How to add standout mode to a style
 
239
        with_standout = {"normal": "standout",
 
240
                         "bold": "bold-standout",
 
241
                         "underline-blink":
 
242
                         "underline-blink-standout",
 
243
                         "bold-underline-blink":
 
244
                         "bold-underline-blink-standout",
 
245
                         }
 
246
 
 
247
        # Rebuild focus and non-focus widgets using current properties
 
248
 
 
249
        # Base part of a client. Name!
 
250
        base = "{name}: ".format(name=self.properties["Name"])
 
251
        if not self.properties["Enabled"]:
 
252
            message = "DISABLED"
 
253
            self.using_timer(False)
 
254
        elif self.properties["ApprovalPending"]:
 
255
            timeout = datetime.timedelta(
 
256
                milliseconds=self.properties["ApprovalDelay"])
 
257
            last_approval_request = isoformat_to_datetime(
 
258
                self.properties["LastApprovalRequest"])
 
259
            if last_approval_request is not None:
 
260
                timer = max(timeout - (datetime.datetime.utcnow()
 
261
                                       - last_approval_request),
 
262
                            datetime.timedelta())
 
263
            else:
 
264
                timer = datetime.timedelta()
 
265
            if self.properties["ApprovedByDefault"]:
 
266
                message = "Approval in {}. (d)eny?"
 
267
            else:
 
268
                message = "Denial in {}. (a)pprove?"
 
269
            message = message.format(str(timer).rsplit(".", 1)[0])
 
270
            self.using_timer(True)
 
271
        elif self.properties["LastCheckerStatus"] != 0:
 
272
            # When checker has failed, show timer until client expires
 
273
            expires = self.properties["Expires"]
 
274
            if expires == "":
 
275
                timer = datetime.timedelta(0)
 
276
            else:
 
277
                expires = (datetime.datetime.strptime
 
278
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
 
279
                timer = max(expires - datetime.datetime.utcnow(),
 
280
                            datetime.timedelta())
 
281
            message = ("A checker has failed! Time until client"
 
282
                       " gets disabled: {}"
 
283
                       .format(str(timer).rsplit(".", 1)[0]))
 
284
            self.using_timer(True)
 
285
        else:
 
286
            message = "enabled"
 
287
            self.using_timer(False)
 
288
        self._text = "{}{}".format(base, message)
 
289
 
 
290
        if not urwid.supports_unicode():
 
291
            self._text = self._text.encode("ascii", "replace")
 
292
        textlist = [("normal", self._text)]
 
293
        self._text_widget.set_text(textlist)
 
294
        self._focus_text_widget.set_text([(with_standout[text[0]],
 
295
                                           text[1])
 
296
                                          if isinstance(text, tuple)
 
297
                                          else text
 
298
                                          for text in textlist])
 
299
        self._widget = self._text_widget
 
300
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
 
301
                                            "standout")
 
302
        # Run update hook, if any
 
303
        if self.update_hook is not None:
 
304
            self.update_hook()
 
305
 
 
306
    def update_timer(self):
 
307
        """called by GLib. Will indefinitely loop until
 
308
        GLib.source_remove() on tag is called
 
309
        """
 
310
        self.update()
 
311
        return True             # Keep calling this
 
312
 
 
313
    def delete(self, **kwargs):
 
314
        if self._update_timer_callback_tag is not None:
 
315
            GLib.source_remove(self._update_timer_callback_tag)
 
316
            self._update_timer_callback_tag = None
 
317
        for match in self.match_objects:
 
318
            match.remove()
 
319
        self.match_objects = ()
 
320
        if self.delete_hook is not None:
 
321
            self.delete_hook(self)
 
322
        return super(MandosClientWidget, self).delete(**kwargs)
 
323
 
 
324
    def render(self, maxcolrow, focus=False):
 
325
        """Render differently if we have focus.
 
326
        This overrides the method from urwid.FlowWidget"""
 
327
        return self.current_widget(focus).render(maxcolrow,
 
328
                                                 focus=focus)
 
329
 
 
330
    def keypress(self, maxcolrow, key):
 
331
        """Handle keys.
 
332
        This overrides the method from urwid.FlowWidget"""
 
333
        if key == "+":
 
334
            self.proxy.Set(client_interface, "Enabled",
 
335
                           dbus.Boolean(True), ignore_reply=True,
 
336
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
337
        elif key == "-":
 
338
            self.proxy.Set(client_interface, "Enabled", False,
 
339
                           ignore_reply=True,
 
340
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
341
        elif key == "a":
 
342
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
 
343
                               dbus_interface=client_interface,
 
344
                               ignore_reply=True)
 
345
        elif key == "d":
 
346
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
 
347
                               dbus_interface=client_interface,
 
348
                               ignore_reply=True)
 
349
        elif key == "R" or key == "_" or key == "ctrl k":
 
350
            self.server_proxy_object.RemoveClient(self.proxy
 
351
                                                  .object_path,
 
352
                                                  ignore_reply=True)
 
353
        elif key == "s":
 
354
            self.proxy.Set(client_interface, "CheckerRunning",
 
355
                           dbus.Boolean(True), ignore_reply=True,
 
356
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
357
        elif key == "S":
 
358
            self.proxy.Set(client_interface, "CheckerRunning",
 
359
                           dbus.Boolean(False), ignore_reply=True,
 
360
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
361
        elif key == "C":
 
362
            self.proxy.CheckedOK(dbus_interface=client_interface,
 
363
                                 ignore_reply=True)
 
364
        # xxx
 
365
#         elif key == "p" or key == "=":
 
366
#             self.proxy.pause()
 
367
#         elif key == "u" or key == ":":
 
368
#             self.proxy.unpause()
 
369
#         elif key == "RET":
 
370
#             self.open()
 
371
        else:
 
372
            return key
 
373
 
 
374
    def properties_changed(self, interface, properties, invalidated):
 
375
        """Call self.update() if any properties changed.
 
376
        This overrides the method from MandosClientPropertyCache"""
 
377
        old_values = {key: self.properties.get(key)
 
378
                      for key in properties.keys()}
 
379
        super(MandosClientWidget, self).properties_changed(
 
380
            interface, properties, invalidated)
 
381
        if any(old_values[key] != self.properties.get(key)
 
382
               for key in old_values):
 
383
            self.update()
 
384
 
 
385
 
 
386
def glib_safely(func, retval=True):
 
387
    def safe_func(*args, **kwargs):
 
388
        try:
 
389
            return func(*args, **kwargs)
 
390
        except Exception:
 
391
            log.exception("")
 
392
            return retval
 
393
    return safe_func
 
394
 
 
395
 
 
396
class ConstrainedListBox(urwid.ListBox):
 
397
    """Like a normal urwid.ListBox, but will consume all "up" or
 
398
    "down" key presses, thus not allowing any containing widgets to
 
399
    use them as an excuse to shift focus away from this widget.
 
400
    """
 
401
    def keypress(self, *args, **kwargs):
 
402
        ret = (super(ConstrainedListBox, self)
 
403
               .keypress(*args, **kwargs))
 
404
        if ret in ("up", "down"):
 
405
            return
 
406
        return ret
 
407
 
 
408
 
 
409
class UserInterface(object):
 
410
    """This is the entire user interface - the whole screen
 
411
    with boxes, lists of client widgets, etc.
 
412
    """
 
413
    def __init__(self, max_log_length=1000):
 
414
        DBusGMainLoop(set_as_default=True)
 
415
 
 
416
        self.screen = urwid.curses_display.Screen()
 
417
 
 
418
        self.screen.register_palette((
 
419
                ("normal",
 
420
                 "default", "default", None),
 
421
                ("bold",
 
422
                 "bold", "default", "bold"),
 
423
                ("underline-blink",
 
424
                 "underline,blink", "default", "underline,blink"),
 
425
                ("standout",
 
426
                 "standout", "default", "standout"),
 
427
                ("bold-underline-blink",
 
428
                 "bold,underline,blink", "default",
 
429
                 "bold,underline,blink"),
 
430
                ("bold-standout",
 
431
                 "bold,standout", "default", "bold,standout"),
 
432
                ("underline-blink-standout",
 
433
                 "underline,blink,standout", "default",
 
434
                 "underline,blink,standout"),
 
435
                ("bold-underline-blink-standout",
 
436
                 "bold,underline,blink,standout", "default",
 
437
                 "bold,underline,blink,standout"),
 
438
                ))
 
439
 
 
440
        if urwid.supports_unicode():
 
441
            self.divider = "─"  # \u2500
 
442
        else:
 
443
            self.divider = "_"  # \u005f
 
444
 
 
445
        self.screen.start()
 
446
 
 
447
        self.size = self.screen.get_cols_rows()
 
448
 
 
449
        self.clients = urwid.SimpleListWalker([])
 
450
        self.clients_dict = {}
 
451
 
 
452
        # We will add Text widgets to this list
 
453
        self.log = urwid.SimpleListWalker([])
 
454
        self.max_log_length = max_log_length
 
455
 
 
456
        # We keep a reference to the log widget so we can remove it
 
457
        # from the ListWalker without it getting destroyed
 
458
        self.logbox = ConstrainedListBox(self.log)
 
459
 
 
460
        # This keeps track of whether self.uilist currently has
 
461
        # self.logbox in it or not
 
462
        self.log_visible = True
 
463
        self.log_wrap = "any"
 
464
 
 
465
        self.loghandler = UILogHandler(self)
 
466
 
 
467
        self.rebuild()
 
468
        self.add_log_line(("bold",
 
469
                           "Mandos Monitor version " + version))
 
470
        self.add_log_line(("bold", "q: Quit  ?: Help"))
 
471
 
 
472
        self.busname = domain + ".Mandos"
 
473
        self.main_loop = GLib.MainLoop()
 
474
 
 
475
    def client_not_found(self, key_id, address):
 
476
        log.info("Client with address %s and key ID %s could"
 
477
                 " not be found", address, key_id)
 
478
 
 
479
    def rebuild(self):
 
480
        """This rebuilds the User Interface.
 
481
        Call this when the widget layout needs to change"""
 
482
        self.uilist = []
 
483
        # self.uilist.append(urwid.ListBox(self.clients))
 
484
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
485
                                                          clients),
 
486
                                       # header=urwid.Divider(),
 
487
                                       header=None,
 
488
                                       footer=urwid.Divider(
 
489
                                           div_char=self.divider)))
 
490
        if self.log_visible:
 
491
            self.uilist.append(self.logbox)
 
492
        self.topwidget = urwid.Pile(self.uilist)
 
493
 
 
494
    def add_log_line(self, markup):
 
495
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
 
496
        if self.max_log_length:
 
497
            if len(self.log) > self.max_log_length:
 
498
                del self.log[0:(len(self.log) - self.max_log_length)]
 
499
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
 
500
                              coming_from="above")
 
501
        self.refresh()
 
502
 
 
503
    def toggle_log_display(self):
 
504
        """Toggle visibility of the log buffer."""
 
505
        self.log_visible = not self.log_visible
 
506
        self.rebuild()
 
507
        log.debug("Log visibility changed to: %s", self.log_visible)
 
508
 
 
509
    def change_log_display(self):
 
510
        """Change type of log display.
 
511
        Currently, this toggles wrapping of text lines."""
 
512
        if self.log_wrap == "clip":
 
513
            self.log_wrap = "any"
 
514
        else:
 
515
            self.log_wrap = "clip"
 
516
        for textwidget in self.log:
 
517
            textwidget.set_wrap_mode(self.log_wrap)
 
518
        log.debug("Wrap mode: %s", self.log_wrap)
 
519
 
 
520
    def find_and_remove_client(self, path, interfaces):
 
521
        """Find a client by its object path and remove it.
 
522
 
 
523
        This is connected to the InterfacesRemoved signal from the
 
524
        Mandos server object."""
 
525
        if client_interface not in interfaces:
 
526
            # Not a Mandos client object; ignore
 
527
            return
 
528
        try:
 
529
            client = self.clients_dict[path]
 
530
        except KeyError:
 
531
            # not found?
 
532
            log.warning("Unknown client %s removed", path)
 
533
            return
 
534
        client.delete()
 
535
 
 
536
    def add_new_client(self, path, ifs_and_props):
 
537
        """Find a client by its object path and remove it.
 
538
 
 
539
        This is connected to the InterfacesAdded signal from the
 
540
        Mandos server object.
 
541
        """
 
542
        if client_interface not in ifs_and_props:
 
543
            # Not a Mandos client object; ignore
 
544
            return
 
545
        client_proxy_object = self.bus.get_object(self.busname, path)
 
546
        self.add_client(MandosClientWidget(
 
547
            server_proxy_object=self.mandos_serv,
 
548
            proxy_object=client_proxy_object,
 
549
            update_hook=self.refresh,
 
550
            delete_hook=self.remove_client,
 
551
            properties=dict(ifs_and_props[client_interface])),
 
552
                        path=path)
 
553
 
 
554
    def add_client(self, client, path=None):
 
555
        self.clients.append(client)
 
556
        if path is None:
 
557
            path = client.proxy.object_path
 
558
        self.clients_dict[path] = client
 
559
        self.clients.sort(key=lambda c: c.properties["Name"])
 
560
        self.refresh()
 
561
 
 
562
    def remove_client(self, client, path=None):
 
563
        self.clients.remove(client)
 
564
        if path is None:
 
565
            path = client.proxy.object_path
 
566
        del self.clients_dict[path]
 
567
        self.refresh()
 
568
 
 
569
    def refresh(self):
 
570
        """Redraw the screen"""
 
571
        canvas = self.topwidget.render(self.size, focus=True)
 
572
        self.screen.draw_screen(self.size, canvas)
 
573
 
 
574
    def run(self):
 
575
        """Start the main loop and exit when it's done."""
 
576
        log.addHandler(self.loghandler)
 
577
        self.orig_log_propagate = log.propagate
 
578
        log.propagate = False
 
579
        self.orig_log_level = log.level
 
580
        log.setLevel("INFO")
 
581
        self.bus = dbus.SystemBus()
 
582
        mandos_dbus_objc = self.bus.get_object(
 
583
            self.busname, "/", follow_name_owner_changes=True)
 
584
        self.mandos_serv = dbus.Interface(
 
585
            mandos_dbus_objc, dbus_interface=server_interface)
 
586
        try:
 
587
            mandos_clients = (self.mandos_serv
 
588
                              .GetAllClientsWithProperties())
 
589
            if not mandos_clients:
 
590
                log.warning("Note: Server has no clients.")
 
591
        except dbus.exceptions.DBusException:
 
592
            log.warning("Note: No Mandos server running.")
 
593
            mandos_clients = dbus.Dictionary()
 
594
 
 
595
        (self.mandos_serv
 
596
         .connect_to_signal("InterfacesRemoved",
 
597
                            self.find_and_remove_client,
 
598
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
599
                            byte_arrays=True))
 
600
        (self.mandos_serv
 
601
         .connect_to_signal("InterfacesAdded",
 
602
                            self.add_new_client,
 
603
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
604
                            byte_arrays=True))
 
605
        (self.mandos_serv
 
606
         .connect_to_signal("ClientNotFound",
 
607
                            self.client_not_found,
 
608
                            dbus_interface=server_interface,
 
609
                            byte_arrays=True))
 
610
        for path, client in mandos_clients.items():
 
611
            client_proxy_object = self.bus.get_object(self.busname,
 
612
                                                      path)
 
613
            self.add_client(MandosClientWidget(
 
614
                server_proxy_object=self.mandos_serv,
 
615
                proxy_object=client_proxy_object,
 
616
                properties=client,
 
617
                update_hook=self.refresh,
 
618
                delete_hook=self.remove_client),
 
619
                            path=path)
 
620
 
 
621
        self.refresh()
 
622
        self._input_callback_tag = (
 
623
            GLib.io_add_watch(
 
624
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
 
625
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
626
                glib_safely(self.process_input)))
 
627
        self.main_loop.run()
 
628
        # Main loop has finished, we should close everything now
 
629
        GLib.source_remove(self._input_callback_tag)
 
630
        with warnings.catch_warnings():
 
631
            warnings.simplefilter("ignore", BytesWarning)
 
632
            self.screen.stop()
 
633
 
 
634
    def stop(self):
 
635
        self.main_loop.quit()
 
636
        log.removeHandler(self.loghandler)
 
637
        log.propagate = self.orig_log_propagate
 
638
 
 
639
    def process_input(self, source, condition):
 
640
        keys = self.screen.get_input()
 
641
        translations = {"ctrl n": "down",       # Emacs
 
642
                        "ctrl p": "up",         # Emacs
 
643
                        "ctrl v": "page down",  # Emacs
 
644
                        "meta v": "page up",    # Emacs
 
645
                        " ": "page down",       # less
 
646
                        "f": "page down",       # less
 
647
                        "b": "page up",         # less
 
648
                        "j": "down",            # vi
 
649
                        "k": "up",              # vi
 
650
                        }
 
651
        for key in keys:
 
652
            try:
 
653
                key = translations[key]
 
654
            except KeyError:    # :-)
 
655
                pass
 
656
 
 
657
            if key == "q" or key == "Q":
 
658
                self.stop()
 
659
                break
 
660
            elif key == "window resize":
 
661
                self.size = self.screen.get_cols_rows()
 
662
                self.refresh()
 
663
            elif key == "ctrl l":
 
664
                self.screen.clear()
 
665
                self.refresh()
 
666
            elif key == "l" or key == "D":
 
667
                self.toggle_log_display()
 
668
                self.refresh()
 
669
            elif key == "w" or key == "i":
 
670
                self.change_log_display()
 
671
                self.refresh()
 
672
            elif key == "?" or key == "f1" or key == "esc":
 
673
                if not self.log_visible:
 
674
                    self.log_visible = True
 
675
                    self.rebuild()
 
676
                self.add_log_line(("bold",
 
677
                                   "  ".join(("q: Quit",
 
678
                                              "?: Help",
 
679
                                              "l: Log window toggle",
 
680
                                              "TAB: Switch window",
 
681
                                              "w: Wrap (log lines)",
 
682
                                              "v: Toggle verbose log",
 
683
                                   ))))
 
684
                self.add_log_line(("bold",
 
685
                                   "  ".join(("Clients:",
 
686
                                              "+: Enable",
 
687
                                              "-: Disable",
 
688
                                              "R: Remove",
 
689
                                              "s: Start new checker",
 
690
                                              "S: Stop checker",
 
691
                                              "C: Checker OK",
 
692
                                              "a: Approve",
 
693
                                              "d: Deny",
 
694
                                   ))))
 
695
                self.refresh()
 
696
            elif key == "tab":
 
697
                if self.topwidget.get_focus() is self.logbox:
 
698
                    self.topwidget.set_focus(0)
 
699
                else:
 
700
                    self.topwidget.set_focus(self.logbox)
 
701
                self.refresh()
 
702
            elif key == "v":
 
703
                if log.level < logging.INFO:
 
704
                    log.setLevel(logging.INFO)
 
705
                    log.info("Verbose mode: Off")
 
706
                else:
 
707
                    log.setLevel(logging.NOTSET)
 
708
                    log.info("Verbose mode: On")
 
709
            # elif (key == "end" or key == "meta >" or key == "G"
 
710
            #       or key == ">"):
 
711
            #     pass            # xxx end-of-buffer
 
712
            # elif (key == "home" or key == "meta <" or key == "g"
 
713
            #       or key == "<"):
 
714
            #     pass            # xxx beginning-of-buffer
 
715
            # elif key == "ctrl e" or key == "$":
 
716
            #     pass            # xxx move-end-of-line
 
717
            # elif key == "ctrl a" or key == "^":
 
718
            #     pass            # xxx move-beginning-of-line
 
719
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
720
            #     pass            # xxx left
 
721
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
722
            #     pass            # xxx right
 
723
            # elif key == "a":
 
724
            #     pass            # scroll up log
 
725
            # elif key == "z":
 
726
            #     pass            # scroll down log
 
727
            elif self.topwidget.selectable():
 
728
                self.topwidget.keypress(self.size, key)
 
729
                self.refresh()
 
730
        return True
 
731
 
 
732
 
 
733
class UILogHandler(logging.Handler):
 
734
    def __init__(self, ui, *args, **kwargs):
 
735
        self.ui = ui
 
736
        super(UILogHandler, self).__init__(*args, **kwargs)
 
737
        self.setFormatter(
 
738
            logging.Formatter("%(asctime)s: %(message)s"))
 
739
    def emit(self, record):
 
740
        msg = self.format(record)
 
741
        if record.levelno > logging.INFO:
 
742
            msg = ("bold", msg)
 
743
        self.ui.add_log_line(msg)
 
744
 
 
745
 
 
746
ui = UserInterface()
 
747
try:
 
748
    ui.run()
 
749
except KeyboardInterrupt:
 
750
    with warnings.catch_warnings():
 
751
        warnings.filterwarnings("ignore", "", BytesWarning)
 
752
        ui.screen.stop()
 
753
except Exception:
 
754
    with warnings.catch_warnings():
 
755
        warnings.filterwarnings("ignore", "", BytesWarning)
 
756
        ui.screen.stop()
 
757
    raise