/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release

« back to all changes in this revision

Viewing changes to mandos-monitor

  • Committer: Teddy Hogeborn
  • Date: 2012-11-14 21:03:24 UTC
  • mto: (237.7.272 trunk)
  • mto: This revision was merged to the branch mainline in revision 303.
  • Revision ID: teddy@recompile.se-20121114210324-n7m7k0ki2ncmje3a
* mandos-ctl (string_to_delta): Try to parse RFC 3339 duration before
                                anything else.  This also minimizes
                                the changes from the last release.
  (PGPEngine): Use straight subprocess.Popen() to call "gpg".
* mandos-monitor (UserInterface.run): Fix grammar.

Show diffs side-by-side

added added

removed removed

Lines of Context:
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
from future_builtins import *
 
30
 
 
31
import sys
 
32
import os
 
33
import signal
 
34
 
 
35
import datetime
 
36
 
 
37
import urwid.curses_display
 
38
import urwid
 
39
 
 
40
from dbus.mainloop.glib import DBusGMainLoop
 
41
import gobject
 
42
 
 
43
import dbus
 
44
 
 
45
import UserList
 
46
 
 
47
import locale
 
48
 
 
49
locale.setlocale(locale.LC_ALL, '')
 
50
 
 
51
import logging
 
52
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
 
53
 
 
54
# Some useful constants
 
55
domain = 'se.recompile'
 
56
server_interface = domain + '.Mandos'
 
57
client_interface = domain + '.Mandos.Client'
 
58
version = "1.6.0"
 
59
 
 
60
# Always run in monochrome mode
 
61
urwid.curses_display.curses.has_colors = lambda : False
 
62
 
 
63
# Urwid doesn't support blinking, but we want it.  Since we have no
 
64
# use for underline on its own, we make underline also always blink.
 
65
urwid.curses_display.curses.A_UNDERLINE |= (
 
66
    urwid.curses_display.curses.A_BLINK)
 
67
 
 
68
def isoformat_to_datetime(iso):
 
69
    "Parse an ISO 8601 date string to a datetime.datetime()"
 
70
    if not iso:
 
71
        return None
 
72
    d, t = iso.split("T", 1)
 
73
    year, month, day = d.split("-", 2)
 
74
    hour, minute, second = t.split(":", 2)
 
75
    second, fraction = divmod(float(second), 1)
 
76
    return datetime.datetime(int(year),
 
77
                             int(month),
 
78
                             int(day),
 
79
                             int(hour),
 
80
                             int(minute),
 
81
                             int(second),           # Whole seconds
 
82
                             int(fraction*1000000)) # Microseconds
 
83
 
 
84
class MandosClientPropertyCache(object):
 
85
    """This wraps a Mandos Client D-Bus proxy object, caches the
 
86
    properties and calls a hook function when any of them are
 
87
    changed.
 
88
    """
 
89
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
90
        self.proxy = proxy_object # Mandos Client proxy object
 
91
        self.properties = dict() if properties is None else properties
 
92
        self.property_changed_match = (
 
93
            self.proxy.connect_to_signal("PropertyChanged",
 
94
                                         self._property_changed,
 
95
                                         client_interface,
 
96
                                         byte_arrays=True))
 
97
        
 
98
        if properties is None:
 
99
            self.properties.update(
 
100
                self.proxy.GetAll(client_interface,
 
101
                                  dbus_interface
 
102
                                  = dbus.PROPERTIES_IFACE))
 
103
        
 
104
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
105
    
 
106
    def _property_changed(self, property, value):
 
107
        """Helper which takes positional arguments"""
 
108
        return self.property_changed(property=property, value=value)
 
109
    
 
110
    def property_changed(self, property=None, value=None):
 
111
        """This is called whenever we get a PropertyChanged signal
 
112
        It updates the changed property in the "properties" dict.
 
113
        """
 
114
        # Update properties dict with new value
 
115
        self.properties[property] = value
 
116
    
 
117
    def delete(self):
 
118
        self.property_changed_match.remove()
 
119
 
 
120
 
 
121
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
 
122
    """A Mandos Client which is visible on the screen.
 
123
    """
 
124
    
 
125
    def __init__(self, server_proxy_object=None, update_hook=None,
 
126
                 delete_hook=None, logger=None, **kwargs):
 
127
        # Called on update
 
128
        self.update_hook = update_hook
 
129
        # Called on delete
 
130
        self.delete_hook = delete_hook
 
131
        # Mandos Server proxy object
 
132
        self.server_proxy_object = server_proxy_object
 
133
        # Logger
 
134
        self.logger = logger
 
135
        
 
136
        self._update_timer_callback_tag = None
 
137
        
 
138
        # The widget shown normally
 
139
        self._text_widget = urwid.Text("")
 
140
        # The widget shown when we have focus
 
141
        self._focus_text_widget = urwid.Text("")
 
142
        super(MandosClientWidget, self).__init__(**kwargs)
 
143
        self.update()
 
144
        self.opened = False
 
145
        
 
146
        self.match_objects = (
 
147
            self.proxy.connect_to_signal("CheckerCompleted",
 
148
                                         self.checker_completed,
 
149
                                         client_interface,
 
150
                                         byte_arrays=True),
 
151
            self.proxy.connect_to_signal("CheckerStarted",
 
152
                                         self.checker_started,
 
153
                                         client_interface,
 
154
                                         byte_arrays=True),
 
155
            self.proxy.connect_to_signal("GotSecret",
 
156
                                         self.got_secret,
 
157
                                         client_interface,
 
158
                                         byte_arrays=True),
 
159
            self.proxy.connect_to_signal("NeedApproval",
 
160
                                         self.need_approval,
 
161
                                         client_interface,
 
162
                                         byte_arrays=True),
 
163
            self.proxy.connect_to_signal("Rejected",
 
164
                                         self.rejected,
 
165
                                         client_interface,
 
166
                                         byte_arrays=True))
 
167
        #self.logger('Created client {0}'
 
168
        #            .format(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 = (gobject.timeout_add
 
177
                                               (1000,
 
178
                                                self.update_timer))
 
179
        elif not (flag or self._update_timer_callback_tag is None):
 
180
            gobject.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
            self.update()
 
186
            return
 
187
        # Checker failed
 
188
        if os.WIFEXITED(condition):
 
189
            self.logger('Checker for client {0} (command "{1}")'
 
190
                        ' failed with exit code {2}'
 
191
                        .format(self.properties["Name"], command,
 
192
                                os.WEXITSTATUS(condition)))
 
193
        elif os.WIFSIGNALED(condition):
 
194
            self.logger('Checker for client {0} (command "{1}") was'
 
195
                        ' killed by signal {2}'
 
196
                        .format(self.properties["Name"], command,
 
197
                                os.WTERMSIG(condition)))
 
198
        elif os.WCOREDUMP(condition):
 
199
            self.logger('Checker for client {0} (command "{1}")'
 
200
                        ' dumped core'
 
201
                        .format(self.properties["Name"], command))
 
202
        else:
 
203
            self.logger('Checker for client {0} completed'
 
204
                        ' mysteriously'
 
205
                        .format(self.properties["Name"]))
 
206
        self.update()
 
207
    
 
208
    def checker_started(self, command):
 
209
        """Server signals that a checker started. This could be useful
 
210
           to log in the future. """
 
211
        #self.logger('Client {0} started checker "{1}"'
 
212
        #            .format(self.properties["Name"],
 
213
        #                    unicode(command)))
 
214
        pass
 
215
    
 
216
    def got_secret(self):
 
217
        self.logger('Client {0} received its secret'
 
218
                    .format(self.properties["Name"]))
 
219
    
 
220
    def need_approval(self, timeout, default):
 
221
        if not default:
 
222
            message = 'Client {0} needs approval within {1} seconds'
 
223
        else:
 
224
            message = 'Client {0} will get its secret in {1} seconds'
 
225
        self.logger(message.format(self.properties["Name"],
 
226
                                   timeout/1000))
 
227
    
 
228
    def rejected(self, reason):
 
229
        self.logger('Client {0} was rejected; reason: {1}'
 
230
                    .format(self.properties["Name"], reason))
 
231
    
 
232
    def selectable(self):
 
233
        """Make this a "selectable" widget.
 
234
        This overrides the method from urwid.FlowWidget."""
 
235
        return True
 
236
    
 
237
    def rows(self, maxcolrow, focus=False):
 
238
        """How many rows this widget will occupy might depend on
 
239
        whether we have focus or not.
 
240
        This overrides the method from urwid.FlowWidget"""
 
241
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
242
    
 
243
    def current_widget(self, focus=False):
 
244
        if focus or self.opened:
 
245
            return self._focus_widget
 
246
        return self._widget
 
247
    
 
248
    def update(self):
 
249
        "Called when what is visible on the screen should be updated."
 
250
        # How to add standout mode to a style
 
251
        with_standout = { "normal": "standout",
 
252
                          "bold": "bold-standout",
 
253
                          "underline-blink":
 
254
                              "underline-blink-standout",
 
255
                          "bold-underline-blink":
 
256
                              "bold-underline-blink-standout",
 
257
                          }
 
258
        
 
259
        # Rebuild focus and non-focus widgets using current properties
 
260
        
 
261
        # Base part of a client. Name!
 
262
        base = '{name}: '.format(name=self.properties["Name"])
 
263
        if not self.properties["Enabled"]:
 
264
            message = "DISABLED"
 
265
            self.using_timer(False)
 
266
        elif self.properties["ApprovalPending"]:
 
267
            timeout = datetime.timedelta(milliseconds
 
268
                                         = self.properties
 
269
                                         ["ApprovalDelay"])
 
270
            last_approval_request = isoformat_to_datetime(
 
271
                self.properties["LastApprovalRequest"])
 
272
            if last_approval_request is not None:
 
273
                timer = max(timeout - (datetime.datetime.utcnow()
 
274
                                       - last_approval_request),
 
275
                            datetime.timedelta())
 
276
            else:
 
277
                timer = datetime.timedelta()
 
278
            if self.properties["ApprovedByDefault"]:
 
279
                message = "Approval in {0}. (d)eny?"
 
280
            else:
 
281
                message = "Denial in {0}. (a)pprove?"
 
282
            message = message.format(unicode(timer).rsplit(".", 1)[0])
 
283
            self.using_timer(True)
 
284
        elif self.properties["LastCheckerStatus"] != 0:
 
285
            # When checker has failed, show timer until client expires
 
286
            expires = self.properties["Expires"]
 
287
            if expires == "":
 
288
                timer = datetime.timedelta(0)
 
289
            else:
 
290
                expires = (datetime.datetime.strptime
 
291
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
292
                timer = max(expires - datetime.datetime.utcnow(),
 
293
                            datetime.timedelta())
 
294
            message = ('A checker has failed! Time until client'
 
295
                       ' gets disabled: {0}'
 
296
                       .format(unicode(timer).rsplit(".", 1)[0]))
 
297
            self.using_timer(True)
 
298
        else:
 
299
            message = "enabled"
 
300
            self.using_timer(False)
 
301
        self._text = "{0}{1}".format(base, message)
 
302
        
 
303
        if not urwid.supports_unicode():
 
304
            self._text = self._text.encode("ascii", "replace")
 
305
        textlist = [("normal", self._text)]
 
306
        self._text_widget.set_text(textlist)
 
307
        self._focus_text_widget.set_text([(with_standout[text[0]],
 
308
                                           text[1])
 
309
                                          if isinstance(text, tuple)
 
310
                                          else text
 
311
                                          for text in textlist])
 
312
        self._widget = self._text_widget
 
313
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
 
314
                                            "standout")
 
315
        # Run update hook, if any
 
316
        if self.update_hook is not None:
 
317
            self.update_hook()
 
318
    
 
319
    def update_timer(self):
 
320
        """called by gobject. Will indefinitely loop until
 
321
        gobject.source_remove() on tag is called"""
 
322
        self.update()
 
323
        return True             # Keep calling this
 
324
    
 
325
    def delete(self, **kwargs):
 
326
        if self._update_timer_callback_tag is not None:
 
327
            gobject.source_remove(self._update_timer_callback_tag)
 
328
            self._update_timer_callback_tag = None
 
329
        for match in self.match_objects:
 
330
            match.remove()
 
331
        self.match_objects = ()
 
332
        if self.delete_hook is not None:
 
333
            self.delete_hook(self)
 
334
        return super(MandosClientWidget, self).delete(**kwargs)
 
335
    
 
336
    def render(self, maxcolrow, focus=False):
 
337
        """Render differently if we have focus.
 
338
        This overrides the method from urwid.FlowWidget"""
 
339
        return self.current_widget(focus).render(maxcolrow,
 
340
                                                 focus=focus)
 
341
    
 
342
    def keypress(self, maxcolrow, key):
 
343
        """Handle keys.
 
344
        This overrides the method from urwid.FlowWidget"""
 
345
        if key == "+":
 
346
            self.proxy.Enable(dbus_interface = client_interface,
 
347
                              ignore_reply=True)
 
348
        elif key == "-":
 
349
            self.proxy.Disable(dbus_interface = client_interface,
 
350
                               ignore_reply=True)
 
351
        elif key == "a":
 
352
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
 
353
                               dbus_interface = client_interface,
 
354
                               ignore_reply=True)
 
355
        elif key == "d":
 
356
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
 
357
                                  dbus_interface = client_interface,
 
358
                               ignore_reply=True)
 
359
        elif key == "R" or key == "_" or key == "ctrl k":
 
360
            self.server_proxy_object.RemoveClient(self.proxy
 
361
                                                  .object_path,
 
362
                                                  ignore_reply=True)
 
363
        elif key == "s":
 
364
            self.proxy.StartChecker(dbus_interface = client_interface,
 
365
                                    ignore_reply=True)
 
366
        elif key == "S":
 
367
            self.proxy.StopChecker(dbus_interface = client_interface,
 
368
                                   ignore_reply=True)
 
369
        elif key == "C":
 
370
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
371
                                 ignore_reply=True)
 
372
        # xxx
 
373
#         elif key == "p" or key == "=":
 
374
#             self.proxy.pause()
 
375
#         elif key == "u" or key == ":":
 
376
#             self.proxy.unpause()
 
377
#         elif key == "RET":
 
378
#             self.open()
 
379
        else:
 
380
            return key
 
381
    
 
382
    def property_changed(self, property=None, **kwargs):
 
383
        """Call self.update() if old value is not new value.
 
384
        This overrides the method from MandosClientPropertyCache"""
 
385
        property_name = unicode(property)
 
386
        old_value = self.properties.get(property_name)
 
387
        super(MandosClientWidget, self).property_changed(
 
388
            property=property, **kwargs)
 
389
        if self.properties.get(property_name) != old_value:
 
390
            self.update()
 
391
 
 
392
 
 
393
class ConstrainedListBox(urwid.ListBox):
 
394
    """Like a normal urwid.ListBox, but will consume all "up" or
 
395
    "down" key presses, thus not allowing any containing widgets to
 
396
    use them as an excuse to shift focus away from this widget.
 
397
    """
 
398
    def keypress(self, *args, **kwargs):
 
399
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
400
        if ret in ("up", "down"):
 
401
            return
 
402
        return ret
 
403
 
 
404
 
 
405
class UserInterface(object):
 
406
    """This is the entire user interface - the whole screen
 
407
    with boxes, lists of client widgets, etc.
 
408
    """
 
409
    def __init__(self, max_log_length=1000):
 
410
        DBusGMainLoop(set_as_default=True)
 
411
        
 
412
        self.screen = urwid.curses_display.Screen()
 
413
        
 
414
        self.screen.register_palette((
 
415
                ("normal",
 
416
                 "default", "default", None),
 
417
                ("bold",
 
418
                 "default", "default", "bold"),
 
419
                ("underline-blink",
 
420
                 "default", "default", "underline"),
 
421
                ("standout",
 
422
                 "default", "default", "standout"),
 
423
                ("bold-underline-blink",
 
424
                 "default", "default", ("bold", "underline")),
 
425
                ("bold-standout",
 
426
                 "default", "default", ("bold", "standout")),
 
427
                ("underline-blink-standout",
 
428
                 "default", "default", ("underline", "standout")),
 
429
                ("bold-underline-blink-standout",
 
430
                 "default", "default", ("bold", "underline",
 
431
                                          "standout")),
 
432
                ))
 
433
        
 
434
        if urwid.supports_unicode():
 
435
            self.divider = "─" # \u2500
 
436
            #self.divider = "━" # \u2501
 
437
        else:
 
438
            #self.divider = "-" # \u002d
 
439
            self.divider = "_" # \u005f
 
440
        
 
441
        self.screen.start()
 
442
        
 
443
        self.size = self.screen.get_cols_rows()
 
444
        
 
445
        self.clients = urwid.SimpleListWalker([])
 
446
        self.clients_dict = {}
 
447
        
 
448
        # We will add Text widgets to this list
 
449
        self.log = []
 
450
        self.max_log_length = max_log_length
 
451
        
 
452
        # We keep a reference to the log widget so we can remove it
 
453
        # from the ListWalker without it getting destroyed
 
454
        self.logbox = ConstrainedListBox(self.log)
 
455
        
 
456
        # This keeps track of whether self.uilist currently has
 
457
        # self.logbox in it or not
 
458
        self.log_visible = True
 
459
        self.log_wrap = "any"
 
460
        
 
461
        self.rebuild()
 
462
        self.log_message_raw(("bold",
 
463
                              "Mandos Monitor version " + version))
 
464
        self.log_message_raw(("bold",
 
465
                              "q: Quit  ?: Help"))
 
466
        
 
467
        self.busname = domain + '.Mandos'
 
468
        self.main_loop = gobject.MainLoop()
 
469
    
 
470
    def client_not_found(self, fingerprint, address):
 
471
        self.log_message("Client with address {0} and fingerprint"
 
472
                         " {1} could not be found"
 
473
                         .format(address, fingerprint))
 
474
    
 
475
    def rebuild(self):
 
476
        """This rebuilds the User Interface.
 
477
        Call this when the widget layout needs to change"""
 
478
        self.uilist = []
 
479
        #self.uilist.append(urwid.ListBox(self.clients))
 
480
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
481
                                                          clients),
 
482
                                       #header=urwid.Divider(),
 
483
                                       header=None,
 
484
                                       footer=
 
485
                                       urwid.Divider(div_char=
 
486
                                                     self.divider)))
 
487
        if self.log_visible:
 
488
            self.uilist.append(self.logbox)
 
489
        self.topwidget = urwid.Pile(self.uilist)
 
490
    
 
491
    def log_message(self, message):
 
492
        """Log message formatted with timestamp"""
 
493
        timestamp = datetime.datetime.now().isoformat()
 
494
        self.log_message_raw(timestamp + ": " + message)
 
495
    
 
496
    def log_message_raw(self, markup):
 
497
        """Add a log message to the log buffer."""
 
498
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
 
499
        if (self.max_log_length
 
500
            and len(self.log) > self.max_log_length):
 
501
            del self.log[0:len(self.log)-self.max_log_length-1]
 
502
        self.logbox.set_focus(len(self.logbox.body.contents),
 
503
                              coming_from="above")
 
504
        self.refresh()
 
505
    
 
506
    def toggle_log_display(self):
 
507
        """Toggle visibility of the log buffer."""
 
508
        self.log_visible = not self.log_visible
 
509
        self.rebuild()
 
510
        #self.log_message("Log visibility changed to: "
 
511
        #                 + unicode(self.log_visible))
 
512
    
 
513
    def change_log_display(self):
 
514
        """Change type of log display.
 
515
        Currently, this toggles wrapping of text lines."""
 
516
        if self.log_wrap == "clip":
 
517
            self.log_wrap = "any"
 
518
        else:
 
519
            self.log_wrap = "clip"
 
520
        for textwidget in self.log:
 
521
            textwidget.set_wrap_mode(self.log_wrap)
 
522
        #self.log_message("Wrap mode: " + self.log_wrap)
 
523
    
 
524
    def find_and_remove_client(self, path, name):
 
525
        """Find a client by its object path and remove it.
 
526
        
 
527
        This is connected to the ClientRemoved signal from the
 
528
        Mandos server object."""
 
529
        try:
 
530
            client = self.clients_dict[path]
 
531
        except KeyError:
 
532
            # not found?
 
533
            self.log_message("Unknown client {0!r} ({1!r}) removed"
 
534
                             .format(name, path))
 
535
            return
 
536
        client.delete()
 
537
    
 
538
    def add_new_client(self, path):
 
539
        client_proxy_object = self.bus.get_object(self.busname, path)
 
540
        self.add_client(MandosClientWidget(server_proxy_object
 
541
                                           =self.mandos_serv,
 
542
                                           proxy_object
 
543
                                           =client_proxy_object,
 
544
                                           update_hook
 
545
                                           =self.refresh,
 
546
                                           delete_hook
 
547
                                           =self.remove_client,
 
548
                                           logger
 
549
                                           =self.log_message),
 
550
                        path=path)
 
551
    
 
552
    def add_client(self, client, path=None):
 
553
        self.clients.append(client)
 
554
        if path is None:
 
555
            path = client.proxy.object_path
 
556
        self.clients_dict[path] = client
 
557
        self.clients.sort(None, lambda c: c.properties["Name"])
 
558
        self.refresh()
 
559
    
 
560
    def remove_client(self, client, path=None):
 
561
        self.clients.remove(client)
 
562
        if path is None:
 
563
            path = client.proxy.object_path
 
564
        del self.clients_dict[path]
 
565
        if not self.clients_dict:
 
566
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
567
            # is completely emptied, we need to recreate it.
 
568
            self.clients = urwid.SimpleListWalker([])
 
569
            self.rebuild()
 
570
        self.refresh()
 
571
    
 
572
    def refresh(self):
 
573
        """Redraw the screen"""
 
574
        canvas = self.topwidget.render(self.size, focus=True)
 
575
        self.screen.draw_screen(self.size, canvas)
 
576
    
 
577
    def run(self):
 
578
        """Start the main loop and exit when it's done."""
 
579
        self.bus = dbus.SystemBus()
 
580
        mandos_dbus_objc = self.bus.get_object(
 
581
            self.busname, "/", follow_name_owner_changes=True)
 
582
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
583
                                          dbus_interface
 
584
                                          = server_interface)
 
585
        try:
 
586
            mandos_clients = (self.mandos_serv
 
587
                              .GetAllClientsWithProperties())
 
588
            if not mandos_clients:
 
589
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
590
        except dbus.exceptions.DBusException:
 
591
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
592
            mandos_clients = dbus.Dictionary()
 
593
        
 
594
        (self.mandos_serv
 
595
         .connect_to_signal("ClientRemoved",
 
596
                            self.find_and_remove_client,
 
597
                            dbus_interface=server_interface,
 
598
                            byte_arrays=True))
 
599
        (self.mandos_serv
 
600
         .connect_to_signal("ClientAdded",
 
601
                            self.add_new_client,
 
602
                            dbus_interface=server_interface,
 
603
                            byte_arrays=True))
 
604
        (self.mandos_serv
 
605
         .connect_to_signal("ClientNotFound",
 
606
                            self.client_not_found,
 
607
                            dbus_interface=server_interface,
 
608
                            byte_arrays=True))
 
609
        for path, client in mandos_clients.iteritems():
 
610
            client_proxy_object = self.bus.get_object(self.busname,
 
611
                                                      path)
 
612
            self.add_client(MandosClientWidget(server_proxy_object
 
613
                                               =self.mandos_serv,
 
614
                                               proxy_object
 
615
                                               =client_proxy_object,
 
616
                                               properties=client,
 
617
                                               update_hook
 
618
                                               =self.refresh,
 
619
                                               delete_hook
 
620
                                               =self.remove_client,
 
621
                                               logger
 
622
                                               =self.log_message),
 
623
                            path=path)
 
624
        
 
625
        self.refresh()
 
626
        self._input_callback_tag = (gobject.io_add_watch
 
627
                                    (sys.stdin.fileno(),
 
628
                                     gobject.IO_IN,
 
629
                                     self.process_input))
 
630
        self.main_loop.run()
 
631
        # Main loop has finished, we should close everything now
 
632
        gobject.source_remove(self._input_callback_tag)
 
633
        self.screen.stop()
 
634
    
 
635
    def stop(self):
 
636
        self.main_loop.quit()
 
637
    
 
638
    def process_input(self, source, condition):
 
639
        keys = self.screen.get_input()
 
640
        translations = { "ctrl n": "down",      # Emacs
 
641
                         "ctrl p": "up",        # Emacs
 
642
                         "ctrl v": "page down", # Emacs
 
643
                         "meta v": "page up",   # Emacs
 
644
                         " ": "page down",      # less
 
645
                         "f": "page down",      # less
 
646
                         "b": "page up",        # less
 
647
                         "j": "down",           # vi
 
648
                         "k": "up",             # vi
 
649
                         }
 
650
        for key in keys:
 
651
            try:
 
652
                key = translations[key]
 
653
            except KeyError:    # :-)
 
654
                pass
 
655
            
 
656
            if key == "q" or key == "Q":
 
657
                self.stop()
 
658
                break
 
659
            elif key == "window resize":
 
660
                self.size = self.screen.get_cols_rows()
 
661
                self.refresh()
 
662
            elif key == "\f":  # Ctrl-L
 
663
                self.refresh()
 
664
            elif key == "l" or key == "D":
 
665
                self.toggle_log_display()
 
666
                self.refresh()
 
667
            elif key == "w" or key == "i":
 
668
                self.change_log_display()
 
669
                self.refresh()
 
670
            elif key == "?" or key == "f1" or key == "esc":
 
671
                if not self.log_visible:
 
672
                    self.log_visible = True
 
673
                    self.rebuild()
 
674
                self.log_message_raw(("bold",
 
675
                                      "  ".
 
676
                                      join(("q: Quit",
 
677
                                            "?: Help",
 
678
                                            "l: Log window toggle",
 
679
                                            "TAB: Switch window",
 
680
                                            "w: Wrap (log)"))))
 
681
                self.log_message_raw(("bold",
 
682
                                      "  "
 
683
                                      .join(("Clients:",
 
684
                                             "+: Enable",
 
685
                                             "-: Disable",
 
686
                                             "R: Remove",
 
687
                                             "s: Start new checker",
 
688
                                             "S: Stop checker",
 
689
                                             "C: Checker OK",
 
690
                                             "a: Approve",
 
691
                                             "d: Deny"))))
 
692
                self.refresh()
 
693
            elif key == "tab":
 
694
                if self.topwidget.get_focus() is self.logbox:
 
695
                    self.topwidget.set_focus(0)
 
696
                else:
 
697
                    self.topwidget.set_focus(self.logbox)
 
698
                self.refresh()
 
699
            #elif (key == "end" or key == "meta >" or key == "G"
 
700
            #      or key == ">"):
 
701
            #    pass            # xxx end-of-buffer
 
702
            #elif (key == "home" or key == "meta <" or key == "g"
 
703
            #      or key == "<"):
 
704
            #    pass            # xxx beginning-of-buffer
 
705
            #elif key == "ctrl e" or key == "$":
 
706
            #    pass            # xxx move-end-of-line
 
707
            #elif key == "ctrl a" or key == "^":
 
708
            #    pass            # xxx move-beginning-of-line
 
709
            #elif key == "ctrl b" or key == "meta (" or key == "h":
 
710
            #    pass            # xxx left
 
711
            #elif key == "ctrl f" or key == "meta )" or key == "l":
 
712
            #    pass            # xxx right
 
713
            #elif key == "a":
 
714
            #    pass            # scroll up log
 
715
            #elif key == "z":
 
716
            #    pass            # scroll down log
 
717
            elif self.topwidget.selectable():
 
718
                self.topwidget.keypress(self.size, key)
 
719
                self.refresh()
 
720
        return True
 
721
 
 
722
ui = UserInterface()
 
723
try:
 
724
    ui.run()
 
725
except KeyboardInterrupt:
 
726
    ui.screen.stop()
 
727
except Exception, e:
 
728
    ui.log_message(unicode(e))
 
729
    ui.screen.stop()
 
730
    raise