/mandos/trunk

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Viewing changes to mandos-monitor

  • Committer: Teddy Hogeborn
  • Date: 2009-02-09 02:01:13 UTC
  • Revision ID: teddy@fukt.bsnet.se-20090209020113-726hq380zvp8zt97
Four new interrelated features:

1. Support using a different network interface via both initramfs.conf
   (the DEVICE setting) and the kernel command line (sixth field of
   the "ip=" option as in Linux' Documentation/nfsroot.txt).

2. Support connecting to a specified Mandos server directly using a
   kernel command line option ("mandos=connect:<ADDRESS>:<PORT>").

3. Support connecting directly to an IPv4 address (and port) using the
   "--connect" option of mandos-client.

4. Support an empty string to the --interface option to mandos-client.

* Makefile (WARN): Increase strictness by changing to
                   "-Wstrict-aliasing=1".

* debian/mandos-client.README.Debian (Use the Correct Network
  Interface): Changed to refer to initramfs.conf and nfsroot.txt.
  (Test the Server): Improve wording.
  (Non-local Connection): New section.
* initramfs-tools-script: Obey DEVICE environment variable and setting
                          from "/conf/initramfs.conf".  Also let any
                          "ip=" kernel command line option override
                          it.  Support new "mandos=connect" option.
                          Call "configure_networking" to set up IP
                          address on interface if necessary.
* plugin-runner.conf: Change example.
* plugins.d/mandos-client.c: Some whitespace and comment changes.
  (start_mandos_communication): Take an additional argument for
                                address family, all callers changed.
                                Connect to an IPv4 address if address
                                family is AF_INET.  Only set IPv6
                                scope_id for link-local addresses.
  (main): Accept empty interface name; this will not bring up any
         interface and leave the interface as unspecified.  Also do
         not restore kernel log level if lowering it failed.
* plugins.d/mandos-client.xml (OPTIONS): Document that the
                                         "--interface" option accepts
                                         an empty string.
  (EXAMPLE): Change example IPv6 address to a link-local address.

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Lines of Context:
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
 
    __metaclass__ = type
51
 
    str = unicode
52
 
 
53
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
54
 
logging.basicConfig(level="NOTSET", # Show all messages
55
 
                    format="%(message)s") # Show basic log messages
56
 
 
57
 
logging.captureWarnings(True)   # Show warnings via the logging system
58
 
 
59
 
locale.setlocale(locale.LC_ALL, "")
60
 
 
61
 
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
62
 
 
63
 
# Some useful constants
64
 
domain = "se.recompile"
65
 
server_interface = domain + ".Mandos"
66
 
client_interface = domain + ".Mandos.Client"
67
 
version = "1.8.14"
68
 
 
69
 
try:
70
 
    dbus.OBJECT_MANAGER_IFACE
71
 
except AttributeError:
72
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
73
 
 
74
 
 
75
 
def isoformat_to_datetime(iso):
76
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
77
 
    if not iso:
78
 
        return None
79
 
    d, t = iso.split("T", 1)
80
 
    year, month, day = d.split("-", 2)
81
 
    hour, minute, second = t.split(":", 2)
82
 
    second, fraction = divmod(float(second), 1)
83
 
    return datetime.datetime(int(year),
84
 
                             int(month),
85
 
                             int(day),
86
 
                             int(hour),
87
 
                             int(minute),
88
 
                             int(second),            # Whole seconds
89
 
                             int(fraction*1000000))  # Microseconds
90
 
 
91
 
 
92
 
class MandosClientPropertyCache:
93
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
94
 
    properties and calls a hook function when any of them are
95
 
    changed.
96
 
    """
97
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
98
 
        self.proxy = proxy_object  # Mandos Client proxy object
99
 
        self.properties = dict() if properties is None else properties
100
 
        self.property_changed_match = (
101
 
            self.proxy.connect_to_signal("PropertiesChanged",
102
 
                                         self.properties_changed,
103
 
                                         dbus.PROPERTIES_IFACE,
104
 
                                         byte_arrays=True))
105
 
 
106
 
        if properties is None:
107
 
            self.properties.update(self.proxy.GetAll(
108
 
                client_interface,
109
 
                dbus_interface=dbus.PROPERTIES_IFACE))
110
 
 
111
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
112
 
 
113
 
    def properties_changed(self, interface, properties, invalidated):
114
 
        """This is called whenever we get a PropertiesChanged signal
115
 
        It updates the changed properties in the "properties" dict.
116
 
        """
117
 
        # Update properties dict with new value
118
 
        if interface == client_interface:
119
 
            self.properties.update(properties)
120
 
 
121
 
    def delete(self):
122
 
        self.property_changed_match.remove()
123
 
 
124
 
 
125
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
126
 
    """A Mandos Client which is visible on the screen.
127
 
    """
128
 
 
129
 
    def __init__(self, server_proxy_object=None, update_hook=None,
130
 
                 delete_hook=None, **kwargs):
131
 
        # Called on update
132
 
        self.update_hook = update_hook
133
 
        # Called on delete
134
 
        self.delete_hook = delete_hook
135
 
        # Mandos Server proxy object
136
 
        self.server_proxy_object = server_proxy_object
137
 
 
138
 
        self._update_timer_callback_tag = None
139
 
 
140
 
        # The widget shown normally
141
 
        self._text_widget = urwid.Text("")
142
 
        # The widget shown when we have focus
143
 
        self._focus_text_widget = urwid.Text("")
144
 
        super(MandosClientWidget, self).__init__(**kwargs)
145
 
        self.update()
146
 
        self.opened = False
147
 
 
148
 
        self.match_objects = (
149
 
            self.proxy.connect_to_signal("CheckerCompleted",
150
 
                                         self.checker_completed,
151
 
                                         client_interface,
152
 
                                         byte_arrays=True),
153
 
            self.proxy.connect_to_signal("CheckerStarted",
154
 
                                         self.checker_started,
155
 
                                         client_interface,
156
 
                                         byte_arrays=True),
157
 
            self.proxy.connect_to_signal("GotSecret",
158
 
                                         self.got_secret,
159
 
                                         client_interface,
160
 
                                         byte_arrays=True),
161
 
            self.proxy.connect_to_signal("NeedApproval",
162
 
                                         self.need_approval,
163
 
                                         client_interface,
164
 
                                         byte_arrays=True),
165
 
            self.proxy.connect_to_signal("Rejected",
166
 
                                         self.rejected,
167
 
                                         client_interface,
168
 
                                         byte_arrays=True))
169
 
        log.debug("Created client %s", self.properties["Name"])
170
 
 
171
 
    def using_timer(self, flag):
172
 
        """Call this method with True or False when timer should be
173
 
        activated or deactivated.
174
 
        """
175
 
        if flag and self._update_timer_callback_tag is None:
176
 
            # Will update the shown timer value every second
177
 
            self._update_timer_callback_tag = (
178
 
                GLib.timeout_add(1000,
179
 
                                 glib_safely(self.update_timer)))
180
 
        elif not (flag or self._update_timer_callback_tag is None):
181
 
            GLib.source_remove(self._update_timer_callback_tag)
182
 
            self._update_timer_callback_tag = None
183
 
 
184
 
    def checker_completed(self, exitstatus, condition, command):
185
 
        if exitstatus == 0:
186
 
            log.debug('Checker for client %s (command "%s")'
187
 
                      " succeeded", self.properties["Name"], command)
188
 
            self.update()
189
 
            return
190
 
        # Checker failed
191
 
        if os.WIFEXITED(condition):
192
 
            log.info('Checker for client %s (command "%s") failed'
193
 
                     " with exit code %d", self.properties["Name"],
194
 
                     command, os.WEXITSTATUS(condition))
195
 
        elif os.WIFSIGNALED(condition):
196
 
            log.info('Checker for client %s (command "%s") was'
197
 
                     " killed by signal %d", self.properties["Name"],
198
 
                     command, os.WTERMSIG(condition))
199
 
        self.update()
200
 
 
201
 
    def checker_started(self, command):
202
 
        """Server signals that a checker started."""
203
 
        log.debug('Client %s started checker "%s"',
204
 
                  self.properties["Name"], command)
205
 
 
206
 
    def got_secret(self):
207
 
        log.info("Client %s received its secret",
208
 
                 self.properties["Name"])
209
 
 
210
 
    def need_approval(self, timeout, default):
211
 
        if not default:
212
 
            message = "Client %s needs approval within %f seconds"
213
 
        else:
214
 
            message = "Client %s will get its secret in %f seconds"
215
 
        log.info(message, self.properties["Name"], timeout/1000)
216
 
 
217
 
    def rejected(self, reason):
218
 
        log.info("Client %s was rejected; reason: %s",
219
 
                 self.properties["Name"], reason)
220
 
 
221
 
    def selectable(self):
222
 
        """Make this a "selectable" widget.
223
 
        This overrides the method from urwid.FlowWidget."""
224
 
        return True
225
 
 
226
 
    def rows(self, maxcolrow, focus=False):
227
 
        """How many rows this widget will occupy might depend on
228
 
        whether we have focus or not.
229
 
        This overrides the method from urwid.FlowWidget"""
230
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
231
 
 
232
 
    def current_widget(self, focus=False):
233
 
        if focus or self.opened:
234
 
            return self._focus_widget
235
 
        return self._widget
236
 
 
237
 
    def update(self):
238
 
        "Called when what is visible on the screen should be updated."
239
 
        # How to add standout mode to a style
240
 
        with_standout = {"normal": "standout",
241
 
                         "bold": "bold-standout",
242
 
                         "underline-blink":
243
 
                         "underline-blink-standout",
244
 
                         "bold-underline-blink":
245
 
                         "bold-underline-blink-standout",
246
 
                         }
247
 
 
248
 
        # Rebuild focus and non-focus widgets using current properties
249
 
 
250
 
        # Base part of a client. Name!
251
 
        base = "{name}: ".format(name=self.properties["Name"])
252
 
        if not self.properties["Enabled"]:
253
 
            message = "DISABLED"
254
 
            self.using_timer(False)
255
 
        elif self.properties["ApprovalPending"]:
256
 
            timeout = datetime.timedelta(
257
 
                milliseconds=self.properties["ApprovalDelay"])
258
 
            last_approval_request = isoformat_to_datetime(
259
 
                self.properties["LastApprovalRequest"])
260
 
            if last_approval_request is not None:
261
 
                timer = max(timeout - (datetime.datetime.utcnow()
262
 
                                       - last_approval_request),
263
 
                            datetime.timedelta())
264
 
            else:
265
 
                timer = datetime.timedelta()
266
 
            if self.properties["ApprovedByDefault"]:
267
 
                message = "Approval in {}. (d)eny?"
268
 
            else:
269
 
                message = "Denial in {}. (a)pprove?"
270
 
            message = message.format(str(timer).rsplit(".", 1)[0])
271
 
            self.using_timer(True)
272
 
        elif self.properties["LastCheckerStatus"] != 0:
273
 
            # When checker has failed, show timer until client expires
274
 
            expires = self.properties["Expires"]
275
 
            if expires == "":
276
 
                timer = datetime.timedelta(0)
277
 
            else:
278
 
                expires = (datetime.datetime.strptime
279
 
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
280
 
                timer = max(expires - datetime.datetime.utcnow(),
281
 
                            datetime.timedelta())
282
 
            message = ("A checker has failed! Time until client"
283
 
                       " gets disabled: {}"
284
 
                       .format(str(timer).rsplit(".", 1)[0]))
285
 
            self.using_timer(True)
286
 
        else:
287
 
            message = "enabled"
288
 
            self.using_timer(False)
289
 
        self._text = "{}{}".format(base, message)
290
 
 
291
 
        if not urwid.supports_unicode():
292
 
            self._text = self._text.encode("ascii", "replace")
293
 
        textlist = [("normal", self._text)]
294
 
        self._text_widget.set_text(textlist)
295
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
296
 
                                           text[1])
297
 
                                          if isinstance(text, tuple)
298
 
                                          else text
299
 
                                          for text in textlist])
300
 
        self._widget = self._text_widget
301
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
302
 
                                            "standout")
303
 
        # Run update hook, if any
304
 
        if self.update_hook is not None:
305
 
            self.update_hook()
306
 
 
307
 
    def update_timer(self):
308
 
        """called by GLib. Will indefinitely loop until
309
 
        GLib.source_remove() on tag is called
310
 
        """
311
 
        self.update()
312
 
        return True             # Keep calling this
313
 
 
314
 
    def delete(self, **kwargs):
315
 
        if self._update_timer_callback_tag is not None:
316
 
            GLib.source_remove(self._update_timer_callback_tag)
317
 
            self._update_timer_callback_tag = None
318
 
        for match in self.match_objects:
319
 
            match.remove()
320
 
        self.match_objects = ()
321
 
        if self.delete_hook is not None:
322
 
            self.delete_hook(self)
323
 
        return super(MandosClientWidget, self).delete(**kwargs)
324
 
 
325
 
    def render(self, maxcolrow, focus=False):
326
 
        """Render differently if we have focus.
327
 
        This overrides the method from urwid.FlowWidget"""
328
 
        return self.current_widget(focus).render(maxcolrow,
329
 
                                                 focus=focus)
330
 
 
331
 
    def keypress(self, maxcolrow, key):
332
 
        """Handle keys.
333
 
        This overrides the method from urwid.FlowWidget"""
334
 
        if key == "+":
335
 
            self.proxy.Set(client_interface, "Enabled",
336
 
                           dbus.Boolean(True), ignore_reply=True,
337
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
338
 
        elif key == "-":
339
 
            self.proxy.Set(client_interface, "Enabled", False,
340
 
                           ignore_reply=True,
341
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
342
 
        elif key == "a":
343
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
344
 
                               dbus_interface=client_interface,
345
 
                               ignore_reply=True)
346
 
        elif key == "d":
347
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
348
 
                               dbus_interface=client_interface,
349
 
                               ignore_reply=True)
350
 
        elif key == "R" or key == "_" or key == "ctrl k":
351
 
            self.server_proxy_object.RemoveClient(self.proxy
352
 
                                                  .object_path,
353
 
                                                  ignore_reply=True)
354
 
        elif key == "s":
355
 
            self.proxy.Set(client_interface, "CheckerRunning",
356
 
                           dbus.Boolean(True), ignore_reply=True,
357
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
358
 
        elif key == "S":
359
 
            self.proxy.Set(client_interface, "CheckerRunning",
360
 
                           dbus.Boolean(False), ignore_reply=True,
361
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
362
 
        elif key == "C":
363
 
            self.proxy.CheckedOK(dbus_interface=client_interface,
364
 
                                 ignore_reply=True)
365
 
        # xxx
366
 
#         elif key == "p" or key == "=":
367
 
#             self.proxy.pause()
368
 
#         elif key == "u" or key == ":":
369
 
#             self.proxy.unpause()
370
 
#         elif key == "RET":
371
 
#             self.open()
372
 
        else:
373
 
            return key
374
 
 
375
 
    def properties_changed(self, interface, properties, invalidated):
376
 
        """Call self.update() if any properties changed.
377
 
        This overrides the method from MandosClientPropertyCache"""
378
 
        old_values = {key: self.properties.get(key)
379
 
                      for key in properties.keys()}
380
 
        super(MandosClientWidget, self).properties_changed(
381
 
            interface, properties, invalidated)
382
 
        if any(old_values[key] != self.properties.get(key)
383
 
               for key in old_values):
384
 
            self.update()
385
 
 
386
 
 
387
 
def glib_safely(func, retval=True):
388
 
    def safe_func(*args, **kwargs):
389
 
        try:
390
 
            return func(*args, **kwargs)
391
 
        except Exception:
392
 
            log.exception("")
393
 
            return retval
394
 
    return safe_func
395
 
 
396
 
 
397
 
class ConstrainedListBox(urwid.ListBox):
398
 
    """Like a normal urwid.ListBox, but will consume all "up" or
399
 
    "down" key presses, thus not allowing any containing widgets to
400
 
    use them as an excuse to shift focus away from this widget.
401
 
    """
402
 
    def keypress(self, *args, **kwargs):
403
 
        ret = (super(ConstrainedListBox, self)
404
 
               .keypress(*args, **kwargs))
405
 
        if ret in ("up", "down"):
406
 
            return
407
 
        return ret
408
 
 
409
 
 
410
 
class UserInterface:
411
 
    """This is the entire user interface - the whole screen
412
 
    with boxes, lists of client widgets, etc.
413
 
    """
414
 
    def __init__(self, max_log_length=1000):
415
 
        DBusGMainLoop(set_as_default=True)
416
 
 
417
 
        self.screen = urwid.curses_display.Screen()
418
 
 
419
 
        self.screen.register_palette((
420
 
                ("normal",
421
 
                 "default", "default", None),
422
 
                ("bold",
423
 
                 "bold", "default", "bold"),
424
 
                ("underline-blink",
425
 
                 "underline,blink", "default", "underline,blink"),
426
 
                ("standout",
427
 
                 "standout", "default", "standout"),
428
 
                ("bold-underline-blink",
429
 
                 "bold,underline,blink", "default",
430
 
                 "bold,underline,blink"),
431
 
                ("bold-standout",
432
 
                 "bold,standout", "default", "bold,standout"),
433
 
                ("underline-blink-standout",
434
 
                 "underline,blink,standout", "default",
435
 
                 "underline,blink,standout"),
436
 
                ("bold-underline-blink-standout",
437
 
                 "bold,underline,blink,standout", "default",
438
 
                 "bold,underline,blink,standout"),
439
 
                ))
440
 
 
441
 
        if urwid.supports_unicode():
442
 
            self.divider = "─"  # \u2500
443
 
        else:
444
 
            self.divider = "_"  # \u005f
445
 
 
446
 
        self.screen.start()
447
 
 
448
 
        self.size = self.screen.get_cols_rows()
449
 
 
450
 
        self.clients = urwid.SimpleListWalker([])
451
 
        self.clients_dict = {}
452
 
 
453
 
        # We will add Text widgets to this list
454
 
        self.log = urwid.SimpleListWalker([])
455
 
        self.max_log_length = max_log_length
456
 
 
457
 
        # We keep a reference to the log widget so we can remove it
458
 
        # from the ListWalker without it getting destroyed
459
 
        self.logbox = ConstrainedListBox(self.log)
460
 
 
461
 
        # This keeps track of whether self.uilist currently has
462
 
        # self.logbox in it or not
463
 
        self.log_visible = True
464
 
        self.log_wrap = "any"
465
 
 
466
 
        self.loghandler = UILogHandler(self)
467
 
 
468
 
        self.rebuild()
469
 
        self.add_log_line(("bold",
470
 
                           "Mandos Monitor version " + version))
471
 
        self.add_log_line(("bold", "q: Quit  ?: Help"))
472
 
 
473
 
        self.busname = domain + ".Mandos"
474
 
        self.main_loop = GLib.MainLoop()
475
 
 
476
 
    def client_not_found(self, key_id, address):
477
 
        log.info("Client with address %s and key ID %s could"
478
 
                 " not be found", address, key_id)
479
 
 
480
 
    def rebuild(self):
481
 
        """This rebuilds the User Interface.
482
 
        Call this when the widget layout needs to change"""
483
 
        self.uilist = []
484
 
        # self.uilist.append(urwid.ListBox(self.clients))
485
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
486
 
                                                          clients),
487
 
                                       # header=urwid.Divider(),
488
 
                                       header=None,
489
 
                                       footer=urwid.Divider(
490
 
                                           div_char=self.divider)))
491
 
        if self.log_visible:
492
 
            self.uilist.append(self.logbox)
493
 
        self.topwidget = urwid.Pile(self.uilist)
494
 
 
495
 
    def add_log_line(self, markup):
496
 
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
497
 
        if self.max_log_length:
498
 
            if len(self.log) > self.max_log_length:
499
 
                del self.log[0:(len(self.log) - self.max_log_length)]
500
 
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
501
 
                              coming_from="above")
502
 
        self.refresh()
503
 
 
504
 
    def toggle_log_display(self):
505
 
        """Toggle visibility of the log buffer."""
506
 
        self.log_visible = not self.log_visible
507
 
        self.rebuild()
508
 
        log.debug("Log visibility changed to: %s", self.log_visible)
509
 
 
510
 
    def change_log_display(self):
511
 
        """Change type of log display.
512
 
        Currently, this toggles wrapping of text lines."""
513
 
        if self.log_wrap == "clip":
514
 
            self.log_wrap = "any"
515
 
        else:
516
 
            self.log_wrap = "clip"
517
 
        for textwidget in self.log:
518
 
            textwidget.set_wrap_mode(self.log_wrap)
519
 
        log.debug("Wrap mode: %s", self.log_wrap)
520
 
 
521
 
    def find_and_remove_client(self, path, interfaces):
522
 
        """Find a client by its object path and remove it.
523
 
 
524
 
        This is connected to the InterfacesRemoved signal from the
525
 
        Mandos server object."""
526
 
        if client_interface not in interfaces:
527
 
            # Not a Mandos client object; ignore
528
 
            return
529
 
        try:
530
 
            client = self.clients_dict[path]
531
 
        except KeyError:
532
 
            # not found?
533
 
            log.warning("Unknown client %s removed", path)
534
 
            return
535
 
        client.delete()
536
 
 
537
 
    def add_new_client(self, path, ifs_and_props):
538
 
        """Find a client by its object path and remove it.
539
 
 
540
 
        This is connected to the InterfacesAdded signal from the
541
 
        Mandos server object.
542
 
        """
543
 
        if client_interface not in ifs_and_props:
544
 
            # Not a Mandos client object; ignore
545
 
            return
546
 
        client_proxy_object = self.bus.get_object(self.busname, path)
547
 
        self.add_client(MandosClientWidget(
548
 
            server_proxy_object=self.mandos_serv,
549
 
            proxy_object=client_proxy_object,
550
 
            update_hook=self.refresh,
551
 
            delete_hook=self.remove_client,
552
 
            properties=dict(ifs_and_props[client_interface])),
553
 
                        path=path)
554
 
 
555
 
    def add_client(self, client, path=None):
556
 
        self.clients.append(client)
557
 
        if path is None:
558
 
            path = client.proxy.object_path
559
 
        self.clients_dict[path] = client
560
 
        self.clients.sort(key=lambda c: c.properties["Name"])
561
 
        self.refresh()
562
 
 
563
 
    def remove_client(self, client, path=None):
564
 
        self.clients.remove(client)
565
 
        if path is None:
566
 
            path = client.proxy.object_path
567
 
        del self.clients_dict[path]
568
 
        self.refresh()
569
 
 
570
 
    def refresh(self):
571
 
        """Redraw the screen"""
572
 
        canvas = self.topwidget.render(self.size, focus=True)
573
 
        self.screen.draw_screen(self.size, canvas)
574
 
 
575
 
    def run(self):
576
 
        """Start the main loop and exit when it's done."""
577
 
        log.addHandler(self.loghandler)
578
 
        self.orig_log_propagate = log.propagate
579
 
        log.propagate = False
580
 
        self.orig_log_level = log.level
581
 
        log.setLevel("INFO")
582
 
        self.bus = dbus.SystemBus()
583
 
        mandos_dbus_objc = self.bus.get_object(
584
 
            self.busname, "/", follow_name_owner_changes=True)
585
 
        self.mandos_serv = dbus.Interface(
586
 
            mandos_dbus_objc, dbus_interface=server_interface)
587
 
        try:
588
 
            mandos_clients = (self.mandos_serv
589
 
                              .GetAllClientsWithProperties())
590
 
            if not mandos_clients:
591
 
                log.warning("Note: Server has no clients.")
592
 
        except dbus.exceptions.DBusException:
593
 
            log.warning("Note: No Mandos server running.")
594
 
            mandos_clients = dbus.Dictionary()
595
 
 
596
 
        (self.mandos_serv
597
 
         .connect_to_signal("InterfacesRemoved",
598
 
                            self.find_and_remove_client,
599
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
600
 
                            byte_arrays=True))
601
 
        (self.mandos_serv
602
 
         .connect_to_signal("InterfacesAdded",
603
 
                            self.add_new_client,
604
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
605
 
                            byte_arrays=True))
606
 
        (self.mandos_serv
607
 
         .connect_to_signal("ClientNotFound",
608
 
                            self.client_not_found,
609
 
                            dbus_interface=server_interface,
610
 
                            byte_arrays=True))
611
 
        for path, client in mandos_clients.items():
612
 
            client_proxy_object = self.bus.get_object(self.busname,
613
 
                                                      path)
614
 
            self.add_client(MandosClientWidget(
615
 
                server_proxy_object=self.mandos_serv,
616
 
                proxy_object=client_proxy_object,
617
 
                properties=client,
618
 
                update_hook=self.refresh,
619
 
                delete_hook=self.remove_client),
620
 
                            path=path)
621
 
 
622
 
        self.refresh()
623
 
        self._input_callback_tag = (
624
 
            GLib.io_add_watch(
625
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
626
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
627
 
                glib_safely(self.process_input)))
628
 
        self.main_loop.run()
629
 
        # Main loop has finished, we should close everything now
630
 
        GLib.source_remove(self._input_callback_tag)
631
 
        with warnings.catch_warnings():
632
 
            warnings.simplefilter("ignore", BytesWarning)
633
 
            self.screen.stop()
634
 
 
635
 
    def stop(self):
636
 
        self.main_loop.quit()
637
 
        log.removeHandler(self.loghandler)
638
 
        log.propagate = self.orig_log_propagate
639
 
 
640
 
    def process_input(self, source, condition):
641
 
        keys = self.screen.get_input()
642
 
        translations = {"ctrl n": "down",       # Emacs
643
 
                        "ctrl p": "up",         # Emacs
644
 
                        "ctrl v": "page down",  # Emacs
645
 
                        "meta v": "page up",    # Emacs
646
 
                        " ": "page down",       # less
647
 
                        "f": "page down",       # less
648
 
                        "b": "page up",         # less
649
 
                        "j": "down",            # vi
650
 
                        "k": "up",              # vi
651
 
                        }
652
 
        for key in keys:
653
 
            try:
654
 
                key = translations[key]
655
 
            except KeyError:    # :-)
656
 
                pass
657
 
 
658
 
            if key == "q" or key == "Q":
659
 
                self.stop()
660
 
                break
661
 
            elif key == "window resize":
662
 
                self.size = self.screen.get_cols_rows()
663
 
                self.refresh()
664
 
            elif key == "ctrl l":
665
 
                self.screen.clear()
666
 
                self.refresh()
667
 
            elif key == "l" or key == "D":
668
 
                self.toggle_log_display()
669
 
                self.refresh()
670
 
            elif key == "w" or key == "i":
671
 
                self.change_log_display()
672
 
                self.refresh()
673
 
            elif key == "?" or key == "f1" or key == "esc":
674
 
                if not self.log_visible:
675
 
                    self.log_visible = True
676
 
                    self.rebuild()
677
 
                self.add_log_line(("bold",
678
 
                                   "  ".join(("q: Quit",
679
 
                                              "?: Help",
680
 
                                              "l: Log window toggle",
681
 
                                              "TAB: Switch window",
682
 
                                              "w: Wrap (log lines)",
683
 
                                              "v: Toggle verbose log",
684
 
                                   ))))
685
 
                self.add_log_line(("bold",
686
 
                                   "  ".join(("Clients:",
687
 
                                              "+: Enable",
688
 
                                              "-: Disable",
689
 
                                              "R: Remove",
690
 
                                              "s: Start new checker",
691
 
                                              "S: Stop checker",
692
 
                                              "C: Checker OK",
693
 
                                              "a: Approve",
694
 
                                              "d: Deny",
695
 
                                   ))))
696
 
                self.refresh()
697
 
            elif key == "tab":
698
 
                if self.topwidget.get_focus() is self.logbox:
699
 
                    self.topwidget.set_focus(0)
700
 
                else:
701
 
                    self.topwidget.set_focus(self.logbox)
702
 
                self.refresh()
703
 
            elif key == "v":
704
 
                if log.level < logging.INFO:
705
 
                    log.setLevel(logging.INFO)
706
 
                    log.info("Verbose mode: Off")
707
 
                else:
708
 
                    log.setLevel(logging.NOTSET)
709
 
                    log.info("Verbose mode: On")
710
 
            # elif (key == "end" or key == "meta >" or key == "G"
711
 
            #       or key == ">"):
712
 
            #     pass            # xxx end-of-buffer
713
 
            # elif (key == "home" or key == "meta <" or key == "g"
714
 
            #       or key == "<"):
715
 
            #     pass            # xxx beginning-of-buffer
716
 
            # elif key == "ctrl e" or key == "$":
717
 
            #     pass            # xxx move-end-of-line
718
 
            # elif key == "ctrl a" or key == "^":
719
 
            #     pass            # xxx move-beginning-of-line
720
 
            # elif key == "ctrl b" or key == "meta (" or key == "h":
721
 
            #     pass            # xxx left
722
 
            # elif key == "ctrl f" or key == "meta )" or key == "l":
723
 
            #     pass            # xxx right
724
 
            # elif key == "a":
725
 
            #     pass            # scroll up log
726
 
            # elif key == "z":
727
 
            #     pass            # scroll down log
728
 
            elif self.topwidget.selectable():
729
 
                self.topwidget.keypress(self.size, key)
730
 
                self.refresh()
731
 
        return True
732
 
 
733
 
 
734
 
class UILogHandler(logging.Handler):
735
 
    def __init__(self, ui, *args, **kwargs):
736
 
        self.ui = ui
737
 
        super(UILogHandler, self).__init__(*args, **kwargs)
738
 
        self.setFormatter(
739
 
            logging.Formatter("%(asctime)s: %(message)s"))
740
 
    def emit(self, record):
741
 
        msg = self.format(record)
742
 
        if record.levelno > logging.INFO:
743
 
            msg = ("bold", msg)
744
 
        self.ui.add_log_line(msg)
745
 
 
746
 
 
747
 
ui = UserInterface()
748
 
try:
749
 
    ui.run()
750
 
except KeyboardInterrupt:
751
 
    with warnings.catch_warnings():
752
 
        warnings.filterwarnings("ignore", "", BytesWarning)
753
 
        ui.screen.stop()
754
 
except Exception:
755
 
    with warnings.catch_warnings():
756
 
        warnings.filterwarnings("ignore", "", BytesWarning)
757
 
        ui.screen.stop()
758
 
    raise