/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2009-09-16 23:28:39 UTC
  • Revision ID: teddy@fukt.bsnet.se-20090916232839-3o7i8qmcdcz5j1ya
* init.d-mandos (Required-Start, Required-Stop): Bug fix: Added
                 "$syslog", thanks to Petter Reinholdtsen
                 <pere@hungry.com> (Debian bug #546928).

* initramfs-tools-script: Removed erroneous comment.

* plugins.d/askpass-fifo.c: Removed TEMP_FAILURE_RETRY since it is
                            not needed.

* plugins.d/mandos-client.c (main): Bug fix: Initialize
                                    "old_sigterm_action".

* plugins.d/splashy.c (main): Bug fix: really check return value from
                              "sigaddset".  Fix some warnings on
                              64-bit systems.

* plugins.d/usplash.c (termination_handler, main): Save received
                                                   signal and
                                                   re-raise it on
                                                   exit.
  (usplash_write): Do not close FIFO, instead, take an additional file
                   descriptor pointer to it and open only when needed
                   (all callers changed).  Abort immediately on EINTR.
                   Bug fix:  Add NUL byte on single-word commands.
                   Ignore "interrupted_by_signal".
  (makeprompt, find_usplash): New; broken out from "main()".
  (find_usplash): Bug fix: close /proc/<pid>/cmdline FD on error.
  (main): Reorganized to jump to a new "failure" label on any error.
          Bug fix: check return values from sigaddset.
          New variable "usplash_accessed" to flag if usplash(8) needs
          to be killed and restarted.  Removed the "an_error_occured"
          variable.

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mandos-monitor
1
 
#!/usr/bin/python
2
 
# -*- mode: python; coding: utf-8 -*-
3
 
# 
4
 
# Mandos Monitor - Control and monitor the Mandos server
5
 
# 
6
 
# Copyright © 2009-2012 Teddy Hogeborn
7
 
# Copyright © 2009-2012 Björn Påhlsson
8
 
# 
9
 
# This program is free software: you can redistribute it and/or modify
10
 
# it under the terms of the GNU General Public License as published by
11
 
# the Free Software Foundation, either version 3 of the License, or
12
 
# (at your option) any later version.
13
 
#
14
 
#     This program is distributed in the hope that it will be useful,
15
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
16
 
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
 
#     GNU General Public License for more details.
18
 
# 
19
 
# You should have received a copy of the GNU General Public License
20
 
# along with this program.  If not, see
21
 
# <http://www.gnu.org/licenses/>.
22
 
# 
23
 
# Contact the authors at <mandos@recompile.se>.
24
 
# 
25
 
 
26
 
from __future__ import (division, absolute_import, print_function,
27
 
                        unicode_literals)
28
 
 
29
 
import sys
30
 
import os
31
 
import signal
32
 
 
33
 
import datetime
34
 
 
35
 
import urwid.curses_display
36
 
import urwid
37
 
 
38
 
from dbus.mainloop.glib import DBusGMainLoop
39
 
import gobject
40
 
 
41
 
import dbus
42
 
 
43
 
import UserList
44
 
 
45
 
import locale
46
 
 
47
 
locale.setlocale(locale.LC_ALL, '')
48
 
 
49
 
import logging
50
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
51
 
 
52
 
# Some useful constants
53
 
domain = 'se.recompile'
54
 
server_interface = domain + '.Mandos'
55
 
client_interface = domain + '.Mandos.Client'
56
 
version = "1.5.3"
57
 
 
58
 
# Always run in monochrome mode
59
 
urwid.curses_display.curses.has_colors = lambda : False
60
 
 
61
 
# Urwid doesn't support blinking, but we want it.  Since we have no
62
 
# use for underline on its own, we make underline also always blink.
63
 
urwid.curses_display.curses.A_UNDERLINE |= (
64
 
    urwid.curses_display.curses.A_BLINK)
65
 
 
66
 
def isoformat_to_datetime(iso):
67
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
68
 
    if not iso:
69
 
        return None
70
 
    d, t = iso.split("T", 1)
71
 
    year, month, day = d.split("-", 2)
72
 
    hour, minute, second = t.split(":", 2)
73
 
    second, fraction = divmod(float(second), 1)
74
 
    return datetime.datetime(int(year),
75
 
                             int(month),
76
 
                             int(day),
77
 
                             int(hour),
78
 
                             int(minute),
79
 
                             int(second),           # Whole seconds
80
 
                             int(fraction*1000000)) # Microseconds
81
 
 
82
 
class MandosClientPropertyCache(object):
83
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
84
 
    properties and calls a hook function when any of them are
85
 
    changed.
86
 
    """
87
 
    def __init__(self, proxy_object=None, *args, **kwargs):
88
 
        self.proxy = proxy_object # Mandos Client proxy object
89
 
        
90
 
        self.properties = dict()
91
 
        self.property_changed_match = (
92
 
            self.proxy.connect_to_signal("PropertyChanged",
93
 
                                         self.property_changed,
94
 
                                         client_interface,
95
 
                                         byte_arrays=True))
96
 
        
97
 
        self.properties.update(
98
 
            self.proxy.GetAll(client_interface,
99
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
100
 
 
101
 
        #XXX This breaks good super behaviour
102
 
#        super(MandosClientPropertyCache, self).__init__(
103
 
#            *args, **kwargs)
104
 
    
105
 
    def property_changed(self, property=None, value=None):
106
 
        """This is called whenever we get a PropertyChanged signal
107
 
        It updates the changed property in the "properties" dict.
108
 
        """
109
 
        # Update properties dict with new value
110
 
        self.properties[property] = value
111
 
    
112
 
    def delete(self, *args, **kwargs):
113
 
        self.property_changed_match.remove()
114
 
        super(MandosClientPropertyCache, self).__init__(
115
 
            *args, **kwargs)
116
 
 
117
 
 
118
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
119
 
    """A Mandos Client which is visible on the screen.
120
 
    """
121
 
    
122
 
    def __init__(self, server_proxy_object=None, update_hook=None,
123
 
                 delete_hook=None, logger=None, *args, **kwargs):
124
 
        # Called on update
125
 
        self.update_hook = update_hook
126
 
        # Called on delete
127
 
        self.delete_hook = delete_hook
128
 
        # Mandos Server proxy object
129
 
        self.server_proxy_object = server_proxy_object
130
 
        # Logger
131
 
        self.logger = logger
132
 
        
133
 
        self._update_timer_callback_tag = None
134
 
        self._update_timer_callback_lock = 0
135
 
        
136
 
        # The widget shown normally
137
 
        self._text_widget = urwid.Text("")
138
 
        # The widget shown when we have focus
139
 
        self._focus_text_widget = urwid.Text("")
140
 
        super(MandosClientWidget, self).__init__(
141
 
            update_hook=update_hook, delete_hook=delete_hook,
142
 
            *args, **kwargs)
143
 
        self.update()
144
 
        self.opened = False
145
 
        
146
 
        last_checked_ok = isoformat_to_datetime(self.properties
147
 
                                                ["LastCheckedOK"])
148
 
        
149
 
        if self.properties ["LastCheckerStatus"] != 0:
150
 
            self.using_timer(True)
151
 
        
152
 
        if self.need_approval:
153
 
            self.using_timer(True)
154
 
        
155
 
        self.match_objects = (
156
 
            self.proxy.connect_to_signal("CheckerCompleted",
157
 
                                         self.checker_completed,
158
 
                                         client_interface,
159
 
                                         byte_arrays=True),
160
 
            self.proxy.connect_to_signal("CheckerStarted",
161
 
                                         self.checker_started,
162
 
                                         client_interface,
163
 
                                         byte_arrays=True),
164
 
            self.proxy.connect_to_signal("GotSecret",
165
 
                                         self.got_secret,
166
 
                                         client_interface,
167
 
                                         byte_arrays=True),
168
 
            self.proxy.connect_to_signal("NeedApproval",
169
 
                                         self.need_approval,
170
 
                                         client_interface,
171
 
                                         byte_arrays=True),
172
 
            self.proxy.connect_to_signal("Rejected",
173
 
                                         self.rejected,
174
 
                                         client_interface,
175
 
                                         byte_arrays=True))
176
 
        #self.logger('Created client {0}'
177
 
        #            .format(self.properties["Name"]))
178
 
    
179
 
    def property_changed(self, property=None, value=None):
180
 
        super(self, MandosClientWidget).property_changed(property,
181
 
                                                         value)
182
 
        if property == "ApprovalPending":
183
 
            using_timer(bool(value))
184
 
        if property == "LastCheckerStatus":
185
 
            using_timer(value != 0)
186
 
            #self.logger('Checker for client {0} (command "{1}") was '
187
 
            #            ' successful'.format(self.properties["Name"],
188
 
            #                                 command))
189
 
    
190
 
    def using_timer(self, flag):
191
 
        """Call this method with True or False when timer should be
192
 
        activated or deactivated.
193
 
        """
194
 
        old = self._update_timer_callback_lock
195
 
        if flag:
196
 
            self._update_timer_callback_lock += 1
197
 
        else:
198
 
            self._update_timer_callback_lock -= 1
199
 
        if old == 0 and self._update_timer_callback_lock:
200
 
            # Will update the shown timer value every second
201
 
            self._update_timer_callback_tag = (gobject.timeout_add
202
 
                                               (1000,
203
 
                                                self.update_timer))
204
 
        elif old and self._update_timer_callback_lock == 0:
205
 
            gobject.source_remove(self._update_timer_callback_tag)
206
 
            self._update_timer_callback_tag = None
207
 
    
208
 
    def checker_completed(self, exitstatus, condition, command):
209
 
        if exitstatus == 0:
210
 
            self.update()
211
 
            return
212
 
        # Checker failed
213
 
        if os.WIFEXITED(condition):
214
 
            self.logger('Checker for client {0} (command "{1}")'
215
 
                        ' failed with exit code {2}'
216
 
                        .format(self.properties["Name"], command,
217
 
                                os.WEXITSTATUS(condition)))
218
 
        elif os.WIFSIGNALED(condition):
219
 
            self.logger('Checker for client {0} (command "{1}") was'
220
 
                        ' killed by signal {2}'
221
 
                        .format(self.properties["Name"], command,
222
 
                                os.WTERMSIG(condition)))
223
 
        elif os.WCOREDUMP(condition):
224
 
            self.logger('Checker for client {0} (command "{1}")'
225
 
                        ' dumped core'
226
 
                        .format(self.properties["Name"], command))
227
 
        else:
228
 
            self.logger('Checker for client {0} completed'
229
 
                        ' mysteriously'
230
 
                        .format(self.properties["Name"]))
231
 
        self.update()
232
 
    
233
 
    def checker_started(self, command):
234
 
        """Server signals that a checker started. This could be useful
235
 
           to log in the future. """
236
 
        #self.logger('Client {0} started checker "{1}"'
237
 
        #            .format(self.properties["Name"],
238
 
        #                    unicode(command)))
239
 
        pass
240
 
    
241
 
    def got_secret(self):
242
 
        self.logger('Client {0} received its secret'
243
 
                    .format(self.properties["Name"]))
244
 
    
245
 
    def need_approval(self, timeout, default):
246
 
        if not default:
247
 
            message = 'Client {0} needs approval within {1} seconds'
248
 
        else:
249
 
            message = 'Client {0} will get its secret in {1} seconds'
250
 
        self.logger(message.format(self.properties["Name"],
251
 
                                   timeout/1000))
252
 
        self.using_timer(True)
253
 
    
254
 
    def rejected(self, reason):
255
 
        self.logger('Client {0} was rejected; reason: {1}'
256
 
                    .format(self.properties["Name"], reason))
257
 
    
258
 
    def selectable(self):
259
 
        """Make this a "selectable" widget.
260
 
        This overrides the method from urwid.FlowWidget."""
261
 
        return True
262
 
    
263
 
    def rows(self, maxcolrow, focus=False):
264
 
        """How many rows this widget will occupy might depend on
265
 
        whether we have focus or not.
266
 
        This overrides the method from urwid.FlowWidget"""
267
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
268
 
    
269
 
    def current_widget(self, focus=False):
270
 
        if focus or self.opened:
271
 
            return self._focus_widget
272
 
        return self._widget
273
 
    
274
 
    def update(self):
275
 
        "Called when what is visible on the screen should be updated."
276
 
        # How to add standout mode to a style
277
 
        with_standout = { "normal": "standout",
278
 
                          "bold": "bold-standout",
279
 
                          "underline-blink":
280
 
                              "underline-blink-standout",
281
 
                          "bold-underline-blink":
282
 
                              "bold-underline-blink-standout",
283
 
                          }
284
 
 
285
 
        # Rebuild focus and non-focus widgets using current properties
286
 
 
287
 
        # Base part of a client. Name!
288
 
        base = '{name}: '.format(name=self.properties["Name"])
289
 
        if not self.properties["Enabled"]:
290
 
            message = "DISABLED"
291
 
        elif self.properties["ApprovalPending"]:
292
 
            timeout = datetime.timedelta(milliseconds
293
 
                                         = self.properties
294
 
                                         ["ApprovalDelay"])
295
 
            last_approval_request = isoformat_to_datetime(
296
 
                self.properties["LastApprovalRequest"])
297
 
            if last_approval_request is not None:
298
 
                timer = timeout - (datetime.datetime.utcnow()
299
 
                                   - last_approval_request)
300
 
            else:
301
 
                timer = datetime.timedelta()
302
 
            if self.properties["ApprovedByDefault"]:
303
 
                message = "Approval in {0}. (d)eny?"
304
 
            else:
305
 
                message = "Denial in {0}. (a)pprove?"
306
 
            message = message.format(unicode(timer).rsplit(".", 1)[0])
307
 
        elif self.properties["LastCheckerStatus"] != 0:
308
 
            # When checker has failed, show timer until client expires
309
 
            expires = self.properties["Expires"]
310
 
            if expires == "":
311
 
                timer = datetime.timedelta(0)
312
 
            else:
313
 
                expires = (datetime.datetime.strptime
314
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
315
 
                timer = expires - datetime.datetime.utcnow()
316
 
            message = ('A checker has failed! Time until client'
317
 
                       ' gets disabled: {0}'
318
 
                       .format(unicode(timer).rsplit(".", 1)[0]))
319
 
        else:
320
 
            message = "enabled"
321
 
        self._text = "{0}{1}".format(base, message)
322
 
            
323
 
        if not urwid.supports_unicode():
324
 
            self._text = self._text.encode("ascii", "replace")
325
 
        textlist = [("normal", self._text)]
326
 
        self._text_widget.set_text(textlist)
327
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
328
 
                                           text[1])
329
 
                                          if isinstance(text, tuple)
330
 
                                          else text
331
 
                                          for text in textlist])
332
 
        self._widget = self._text_widget
333
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
334
 
                                            "standout")
335
 
        # Run update hook, if any
336
 
        if self.update_hook is not None:
337
 
            self.update_hook()
338
 
    
339
 
    def update_timer(self):
340
 
        """called by gobject. Will indefinitely loop until
341
 
        gobject.source_remove() on tag is called"""
342
 
        self.update()
343
 
        return True             # Keep calling this
344
 
    
345
 
    def delete(self, *args, **kwargs):
346
 
        if self._update_timer_callback_tag is not None:
347
 
            gobject.source_remove(self._update_timer_callback_tag)
348
 
            self._update_timer_callback_tag = None
349
 
        for match in self.match_objects:
350
 
            match.remove()
351
 
        self.match_objects = ()
352
 
        if self.delete_hook is not None:
353
 
            self.delete_hook(self)
354
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
355
 
    
356
 
    def render(self, maxcolrow, focus=False):
357
 
        """Render differently if we have focus.
358
 
        This overrides the method from urwid.FlowWidget"""
359
 
        return self.current_widget(focus).render(maxcolrow,
360
 
                                                 focus=focus)
361
 
    
362
 
    def keypress(self, maxcolrow, key):
363
 
        """Handle keys.
364
 
        This overrides the method from urwid.FlowWidget"""
365
 
        if key == "+":
366
 
            self.proxy.Enable(dbus_interface = client_interface,
367
 
                              ignore_reply=True)
368
 
        elif key == "-":
369
 
            self.proxy.Disable(dbus_interface = client_interface,
370
 
                               ignore_reply=True)
371
 
        elif key == "a":
372
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
373
 
                               dbus_interface = client_interface,
374
 
                               ignore_reply=True)
375
 
        elif key == "d":
376
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
377
 
                                  dbus_interface = client_interface,
378
 
                               ignore_reply=True)
379
 
        elif key == "R" or key == "_" or key == "ctrl k":
380
 
            self.server_proxy_object.RemoveClient(self.proxy
381
 
                                                  .object_path,
382
 
                                                  ignore_reply=True)
383
 
        elif key == "s":
384
 
            self.proxy.StartChecker(dbus_interface = client_interface,
385
 
                                    ignore_reply=True)
386
 
        elif key == "S":
387
 
            self.proxy.StopChecker(dbus_interface = client_interface,
388
 
                                   ignore_reply=True)
389
 
        elif key == "C":
390
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
391
 
                                 ignore_reply=True)
392
 
        # xxx
393
 
#         elif key == "p" or key == "=":
394
 
#             self.proxy.pause()
395
 
#         elif key == "u" or key == ":":
396
 
#             self.proxy.unpause()
397
 
#         elif key == "RET":
398
 
#             self.open()
399
 
        else:
400
 
            return key
401
 
    
402
 
    def property_changed(self, property=None, value=None,
403
 
                         *args, **kwargs):
404
 
        """Call self.update() if old value is not new value.
405
 
        This overrides the method from MandosClientPropertyCache"""
406
 
        property_name = unicode(property)
407
 
        old_value = self.properties.get(property_name)
408
 
        super(MandosClientWidget, self).property_changed(
409
 
            property=property, value=value, *args, **kwargs)
410
 
        if self.properties.get(property_name) != old_value:
411
 
            self.update()
412
 
 
413
 
 
414
 
class ConstrainedListBox(urwid.ListBox):
415
 
    """Like a normal urwid.ListBox, but will consume all "up" or
416
 
    "down" key presses, thus not allowing any containing widgets to
417
 
    use them as an excuse to shift focus away from this widget.
418
 
    """
419
 
    def keypress(self, maxcolrow, key):
420
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
421
 
        if ret in ("up", "down"):
422
 
            return
423
 
        return ret
424
 
 
425
 
 
426
 
class UserInterface(object):
427
 
    """This is the entire user interface - the whole screen
428
 
    with boxes, lists of client widgets, etc.
429
 
    """
430
 
    def __init__(self, max_log_length=1000):
431
 
        DBusGMainLoop(set_as_default=True)
432
 
        
433
 
        self.screen = urwid.curses_display.Screen()
434
 
        
435
 
        self.screen.register_palette((
436
 
                ("normal",
437
 
                 "default", "default", None),
438
 
                ("bold",
439
 
                 "default", "default", "bold"),
440
 
                ("underline-blink",
441
 
                 "default", "default", "underline"),
442
 
                ("standout",
443
 
                 "default", "default", "standout"),
444
 
                ("bold-underline-blink",
445
 
                 "default", "default", ("bold", "underline")),
446
 
                ("bold-standout",
447
 
                 "default", "default", ("bold", "standout")),
448
 
                ("underline-blink-standout",
449
 
                 "default", "default", ("underline", "standout")),
450
 
                ("bold-underline-blink-standout",
451
 
                 "default", "default", ("bold", "underline",
452
 
                                          "standout")),
453
 
                ))
454
 
        
455
 
        if urwid.supports_unicode():
456
 
            self.divider = "─" # \u2500
457
 
            #self.divider = "━" # \u2501
458
 
        else:
459
 
            #self.divider = "-" # \u002d
460
 
            self.divider = "_" # \u005f
461
 
        
462
 
        self.screen.start()
463
 
        
464
 
        self.size = self.screen.get_cols_rows()
465
 
        
466
 
        self.clients = urwid.SimpleListWalker([])
467
 
        self.clients_dict = {}
468
 
        
469
 
        # We will add Text widgets to this list
470
 
        self.log = []
471
 
        self.max_log_length = max_log_length
472
 
        
473
 
        # We keep a reference to the log widget so we can remove it
474
 
        # from the ListWalker without it getting destroyed
475
 
        self.logbox = ConstrainedListBox(self.log)
476
 
        
477
 
        # This keeps track of whether self.uilist currently has
478
 
        # self.logbox in it or not
479
 
        self.log_visible = True
480
 
        self.log_wrap = "any"
481
 
        
482
 
        self.rebuild()
483
 
        self.log_message_raw(("bold",
484
 
                              "Mandos Monitor version " + version))
485
 
        self.log_message_raw(("bold",
486
 
                              "q: Quit  ?: Help"))
487
 
        
488
 
        self.busname = domain + '.Mandos'
489
 
        self.main_loop = gobject.MainLoop()
490
 
    
491
 
    def client_not_found(self, fingerprint, address):
492
 
        self.log_message("Client with address {0} and fingerprint"
493
 
                         " {1} could not be found"
494
 
                         .format(address, fingerprint))
495
 
    
496
 
    def rebuild(self):
497
 
        """This rebuilds the User Interface.
498
 
        Call this when the widget layout needs to change"""
499
 
        self.uilist = []
500
 
        #self.uilist.append(urwid.ListBox(self.clients))
501
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
502
 
                                                          clients),
503
 
                                       #header=urwid.Divider(),
504
 
                                       header=None,
505
 
                                       footer=
506
 
                                       urwid.Divider(div_char=
507
 
                                                     self.divider)))
508
 
        if self.log_visible:
509
 
            self.uilist.append(self.logbox)
510
 
        self.topwidget = urwid.Pile(self.uilist)
511
 
    
512
 
    def log_message(self, message):
513
 
        timestamp = datetime.datetime.now().isoformat()
514
 
        self.log_message_raw(timestamp + ": " + message)
515
 
    
516
 
    def log_message_raw(self, markup):
517
 
        """Add a log message to the log buffer."""
518
 
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
519
 
        if (self.max_log_length
520
 
            and len(self.log) > self.max_log_length):
521
 
            del self.log[0:len(self.log)-self.max_log_length-1]
522
 
        self.logbox.set_focus(len(self.logbox.body.contents),
523
 
                              coming_from="above")
524
 
        self.refresh()
525
 
    
526
 
    def toggle_log_display(self):
527
 
        """Toggle visibility of the log buffer."""
528
 
        self.log_visible = not self.log_visible
529
 
        self.rebuild()
530
 
        #self.log_message("Log visibility changed to: "
531
 
        #                 + unicode(self.log_visible))
532
 
    
533
 
    def change_log_display(self):
534
 
        """Change type of log display.
535
 
        Currently, this toggles wrapping of text lines."""
536
 
        if self.log_wrap == "clip":
537
 
            self.log_wrap = "any"
538
 
        else:
539
 
            self.log_wrap = "clip"
540
 
        for textwidget in self.log:
541
 
            textwidget.set_wrap_mode(self.log_wrap)
542
 
        #self.log_message("Wrap mode: " + self.log_wrap)
543
 
    
544
 
    def find_and_remove_client(self, path, name):
545
 
        """Find a client by its object path and remove it.
546
 
        
547
 
        This is connected to the ClientRemoved signal from the
548
 
        Mandos server object."""
549
 
        try:
550
 
            client = self.clients_dict[path]
551
 
        except KeyError:
552
 
            # not found?
553
 
            self.log_message("Unknown client {0!r} ({1!r}) removed"
554
 
                             .format(name, path))
555
 
            return
556
 
        client.delete()
557
 
    
558
 
    def add_new_client(self, path):
559
 
        client_proxy_object = self.bus.get_object(self.busname, path)
560
 
        self.add_client(MandosClientWidget(server_proxy_object
561
 
                                           =self.mandos_serv,
562
 
                                           proxy_object
563
 
                                           =client_proxy_object,
564
 
                                           update_hook
565
 
                                           =self.refresh,
566
 
                                           delete_hook
567
 
                                           =self.remove_client,
568
 
                                           logger
569
 
                                           =self.log_message),
570
 
                        path=path)
571
 
    
572
 
    def add_client(self, client, path=None):
573
 
        self.clients.append(client)
574
 
        if path is None:
575
 
            path = client.proxy.object_path
576
 
        self.clients_dict[path] = client
577
 
        self.clients.sort(None, lambda c: c.properties["Name"])
578
 
        self.refresh()
579
 
    
580
 
    def remove_client(self, client, path=None):
581
 
        self.clients.remove(client)
582
 
        if path is None:
583
 
            path = client.proxy.object_path
584
 
        del self.clients_dict[path]
585
 
        if not self.clients_dict:
586
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
587
 
            # is completely emptied, we need to recreate it.
588
 
            self.clients = urwid.SimpleListWalker([])
589
 
            self.rebuild()
590
 
        self.refresh()
591
 
    
592
 
    def refresh(self):
593
 
        """Redraw the screen"""
594
 
        canvas = self.topwidget.render(self.size, focus=True)
595
 
        self.screen.draw_screen(self.size, canvas)
596
 
    
597
 
    def run(self):
598
 
        """Start the main loop and exit when it's done."""
599
 
        self.bus = dbus.SystemBus()
600
 
        mandos_dbus_objc = self.bus.get_object(
601
 
            self.busname, "/", follow_name_owner_changes=True)
602
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
603
 
                                          dbus_interface
604
 
                                          = server_interface)
605
 
        try:
606
 
            mandos_clients = (self.mandos_serv
607
 
                              .GetAllClientsWithProperties())
608
 
        except dbus.exceptions.DBusException:
609
 
            mandos_clients = dbus.Dictionary()
610
 
        
611
 
        (self.mandos_serv
612
 
         .connect_to_signal("ClientRemoved",
613
 
                            self.find_and_remove_client,
614
 
                            dbus_interface=server_interface,
615
 
                            byte_arrays=True))
616
 
        (self.mandos_serv
617
 
         .connect_to_signal("ClientAdded",
618
 
                            self.add_new_client,
619
 
                            dbus_interface=server_interface,
620
 
                            byte_arrays=True))
621
 
        (self.mandos_serv
622
 
         .connect_to_signal("ClientNotFound",
623
 
                            self.client_not_found,
624
 
                            dbus_interface=server_interface,
625
 
                            byte_arrays=True))
626
 
        for path, client in mandos_clients.iteritems():
627
 
            client_proxy_object = self.bus.get_object(self.busname,
628
 
                                                      path)
629
 
            self.add_client(MandosClientWidget(server_proxy_object
630
 
                                               =self.mandos_serv,
631
 
                                               proxy_object
632
 
                                               =client_proxy_object,
633
 
                                               properties=client,
634
 
                                               update_hook
635
 
                                               =self.refresh,
636
 
                                               delete_hook
637
 
                                               =self.remove_client,
638
 
                                               logger
639
 
                                               =self.log_message),
640
 
                            path=path)
641
 
 
642
 
        self.refresh()
643
 
        self._input_callback_tag = (gobject.io_add_watch
644
 
                                    (sys.stdin.fileno(),
645
 
                                     gobject.IO_IN,
646
 
                                     self.process_input))
647
 
        self.main_loop.run()
648
 
        # Main loop has finished, we should close everything now
649
 
        gobject.source_remove(self._input_callback_tag)
650
 
        self.screen.stop()
651
 
    
652
 
    def stop(self):
653
 
        self.main_loop.quit()
654
 
    
655
 
    def process_input(self, source, condition):
656
 
        keys = self.screen.get_input()
657
 
        translations = { "ctrl n": "down",      # Emacs
658
 
                         "ctrl p": "up",        # Emacs
659
 
                         "ctrl v": "page down", # Emacs
660
 
                         "meta v": "page up",   # Emacs
661
 
                         " ": "page down",      # less
662
 
                         "f": "page down",      # less
663
 
                         "b": "page up",        # less
664
 
                         "j": "down",           # vi
665
 
                         "k": "up",             # vi
666
 
                         }
667
 
        for key in keys:
668
 
            try:
669
 
                key = translations[key]
670
 
            except KeyError:    # :-)
671
 
                pass
672
 
            
673
 
            if key == "q" or key == "Q":
674
 
                self.stop()
675
 
                break
676
 
            elif key == "window resize":
677
 
                self.size = self.screen.get_cols_rows()
678
 
                self.refresh()
679
 
            elif key == "\f":  # Ctrl-L
680
 
                self.refresh()
681
 
            elif key == "l" or key == "D":
682
 
                self.toggle_log_display()
683
 
                self.refresh()
684
 
            elif key == "w" or key == "i":
685
 
                self.change_log_display()
686
 
                self.refresh()
687
 
            elif key == "?" or key == "f1" or key == "esc":
688
 
                if not self.log_visible:
689
 
                    self.log_visible = True
690
 
                    self.rebuild()
691
 
                self.log_message_raw(("bold",
692
 
                                      "  ".
693
 
                                      join(("q: Quit",
694
 
                                            "?: Help",
695
 
                                            "l: Log window toggle",
696
 
                                            "TAB: Switch window",
697
 
                                            "w: Wrap (log)"))))
698
 
                self.log_message_raw(("bold",
699
 
                                      "  "
700
 
                                      .join(("Clients:",
701
 
                                             "+: Enable",
702
 
                                             "-: Disable",
703
 
                                             "R: Remove",
704
 
                                             "s: Start new checker",
705
 
                                             "S: Stop checker",
706
 
                                             "C: Checker OK",
707
 
                                             "a: Approve",
708
 
                                             "d: Deny"))))
709
 
                self.refresh()
710
 
            elif key == "tab":
711
 
                if self.topwidget.get_focus() is self.logbox:
712
 
                    self.topwidget.set_focus(0)
713
 
                else:
714
 
                    self.topwidget.set_focus(self.logbox)
715
 
                self.refresh()
716
 
            #elif (key == "end" or key == "meta >" or key == "G"
717
 
            #      or key == ">"):
718
 
            #    pass            # xxx end-of-buffer
719
 
            #elif (key == "home" or key == "meta <" or key == "g"
720
 
            #      or key == "<"):
721
 
            #    pass            # xxx beginning-of-buffer
722
 
            #elif key == "ctrl e" or key == "$":
723
 
            #    pass            # xxx move-end-of-line
724
 
            #elif key == "ctrl a" or key == "^":
725
 
            #    pass            # xxx move-beginning-of-line
726
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
727
 
            #    pass            # xxx left
728
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
729
 
            #    pass            # xxx right
730
 
            #elif key == "a":
731
 
            #    pass            # scroll up log
732
 
            #elif key == "z":
733
 
            #    pass            # scroll down log
734
 
            elif self.topwidget.selectable():
735
 
                self.topwidget.keypress(self.size, key)
736
 
                self.refresh()
737
 
        return True
738
 
 
739
 
ui = UserInterface()
740
 
try:
741
 
    ui.run()
742
 
except KeyboardInterrupt:
743
 
    ui.screen.stop()
744
 
except Exception, e:
745
 
    ui.log_message(unicode(e))
746
 
    ui.screen.stop()
747
 
    raise