/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2012-06-09 23:41:07 UTC
  • mto: This revision was merged to the branch mainline in revision 596.
  • Revision ID: teddy@recompile.se-20120609234107-vm6zilzz0y6aihsm
* plugins.d/mandos-client.c (raise_privileges,
  raise_privileges_permanently, lower_privileges): Return error_t and
                                                   save old errno
                                                   before calling any
                                                   other function.

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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
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 = "1.5.5"
 
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
        timestamp = datetime.datetime.now().isoformat()
 
493
        self.log_message_raw(timestamp + ": " + message)
 
494
    
 
495
    def log_message_raw(self, markup):
 
496
        """Add a log message to the log buffer."""
 
497
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
 
498
        if (self.max_log_length
 
499
            and len(self.log) > self.max_log_length):
 
500
            del self.log[0:len(self.log)-self.max_log_length-1]
 
501
        self.logbox.set_focus(len(self.logbox.body.contents),
 
502
                              coming_from="above")
 
503
        self.refresh()
 
504
    
 
505
    def toggle_log_display(self):
 
506
        """Toggle visibility of the log buffer."""
 
507
        self.log_visible = not self.log_visible
 
508
        self.rebuild()
 
509
        #self.log_message("Log visibility changed to: "
 
510
        #                 + unicode(self.log_visible))
 
511
    
 
512
    def change_log_display(self):
 
513
        """Change type of log display.
 
514
        Currently, this toggles wrapping of text lines."""
 
515
        if self.log_wrap == "clip":
 
516
            self.log_wrap = "any"
 
517
        else:
 
518
            self.log_wrap = "clip"
 
519
        for textwidget in self.log:
 
520
            textwidget.set_wrap_mode(self.log_wrap)
 
521
        #self.log_message("Wrap mode: " + self.log_wrap)
 
522
    
 
523
    def find_and_remove_client(self, path, name):
 
524
        """Find a client by its object path and remove it.
 
525
        
 
526
        This is connected to the ClientRemoved signal from the
 
527
        Mandos server object."""
 
528
        try:
 
529
            client = self.clients_dict[path]
 
530
        except KeyError:
 
531
            # not found?
 
532
            self.log_message("Unknown client {0!r} ({1!r}) removed"
 
533
                             .format(name, path))
 
534
            return
 
535
        client.delete()
 
536
    
 
537
    def add_new_client(self, path):
 
538
        client_proxy_object = self.bus.get_object(self.busname, path)
 
539
        self.add_client(MandosClientWidget(server_proxy_object
 
540
                                           =self.mandos_serv,
 
541
                                           proxy_object
 
542
                                           =client_proxy_object,
 
543
                                           update_hook
 
544
                                           =self.refresh,
 
545
                                           delete_hook
 
546
                                           =self.remove_client,
 
547
                                           logger
 
548
                                           =self.log_message),
 
549
                        path=path)
 
550
    
 
551
    def add_client(self, client, path=None):
 
552
        self.clients.append(client)
 
553
        if path is None:
 
554
            path = client.proxy.object_path
 
555
        self.clients_dict[path] = client
 
556
        self.clients.sort(None, lambda c: c.properties["Name"])
 
557
        self.refresh()
 
558
    
 
559
    def remove_client(self, client, path=None):
 
560
        self.clients.remove(client)
 
561
        if path is None:
 
562
            path = client.proxy.object_path
 
563
        del self.clients_dict[path]
 
564
        if not self.clients_dict:
 
565
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
566
            # is completely emptied, we need to recreate it.
 
567
            self.clients = urwid.SimpleListWalker([])
 
568
            self.rebuild()
 
569
        self.refresh()
 
570
    
 
571
    def refresh(self):
 
572
        """Redraw the screen"""
 
573
        canvas = self.topwidget.render(self.size, focus=True)
 
574
        self.screen.draw_screen(self.size, canvas)
 
575
    
 
576
    def run(self):
 
577
        """Start the main loop and exit when it's done."""
 
578
        self.bus = dbus.SystemBus()
 
579
        mandos_dbus_objc = self.bus.get_object(
 
580
            self.busname, "/", follow_name_owner_changes=True)
 
581
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
582
                                          dbus_interface
 
583
                                          = server_interface)
 
584
        try:
 
585
            mandos_clients = (self.mandos_serv
 
586
                              .GetAllClientsWithProperties())
 
587
        except dbus.exceptions.DBusException:
 
588
            mandos_clients = dbus.Dictionary()
 
589
        
 
590
        (self.mandos_serv
 
591
         .connect_to_signal("ClientRemoved",
 
592
                            self.find_and_remove_client,
 
593
                            dbus_interface=server_interface,
 
594
                            byte_arrays=True))
 
595
        (self.mandos_serv
 
596
         .connect_to_signal("ClientAdded",
 
597
                            self.add_new_client,
 
598
                            dbus_interface=server_interface,
 
599
                            byte_arrays=True))
 
600
        (self.mandos_serv
 
601
         .connect_to_signal("ClientNotFound",
 
602
                            self.client_not_found,
 
603
                            dbus_interface=server_interface,
 
604
                            byte_arrays=True))
 
605
        for path, client in mandos_clients.iteritems():
 
606
            client_proxy_object = self.bus.get_object(self.busname,
 
607
                                                      path)
 
608
            self.add_client(MandosClientWidget(server_proxy_object
 
609
                                               =self.mandos_serv,
 
610
                                               proxy_object
 
611
                                               =client_proxy_object,
 
612
                                               properties=client,
 
613
                                               update_hook
 
614
                                               =self.refresh,
 
615
                                               delete_hook
 
616
                                               =self.remove_client,
 
617
                                               logger
 
618
                                               =self.log_message),
 
619
                            path=path)
 
620
        
 
621
        self.refresh()
 
622
        self._input_callback_tag = (gobject.io_add_watch
 
623
                                    (sys.stdin.fileno(),
 
624
                                     gobject.IO_IN,
 
625
                                     self.process_input))
 
626
        self.main_loop.run()
 
627
        # Main loop has finished, we should close everything now
 
628
        gobject.source_remove(self._input_callback_tag)
 
629
        self.screen.stop()
 
630
    
 
631
    def stop(self):
 
632
        self.main_loop.quit()
 
633
    
 
634
    def process_input(self, source, condition):
 
635
        keys = self.screen.get_input()
 
636
        translations = { "ctrl n": "down",      # Emacs
 
637
                         "ctrl p": "up",        # Emacs
 
638
                         "ctrl v": "page down", # Emacs
 
639
                         "meta v": "page up",   # Emacs
 
640
                         " ": "page down",      # less
 
641
                         "f": "page down",      # less
 
642
                         "b": "page up",        # less
 
643
                         "j": "down",           # vi
 
644
                         "k": "up",             # vi
 
645
                         }
 
646
        for key in keys:
 
647
            try:
 
648
                key = translations[key]
 
649
            except KeyError:    # :-)
 
650
                pass
 
651
            
 
652
            if key == "q" or key == "Q":
 
653
                self.stop()
 
654
                break
 
655
            elif key == "window resize":
 
656
                self.size = self.screen.get_cols_rows()
 
657
                self.refresh()
 
658
            elif key == "\f":  # Ctrl-L
 
659
                self.refresh()
 
660
            elif key == "l" or key == "D":
 
661
                self.toggle_log_display()
 
662
                self.refresh()
 
663
            elif key == "w" or key == "i":
 
664
                self.change_log_display()
 
665
                self.refresh()
 
666
            elif key == "?" or key == "f1" or key == "esc":
 
667
                if not self.log_visible:
 
668
                    self.log_visible = True
 
669
                    self.rebuild()
 
670
                self.log_message_raw(("bold",
 
671
                                      "  ".
 
672
                                      join(("q: Quit",
 
673
                                            "?: Help",
 
674
                                            "l: Log window toggle",
 
675
                                            "TAB: Switch window",
 
676
                                            "w: Wrap (log)"))))
 
677
                self.log_message_raw(("bold",
 
678
                                      "  "
 
679
                                      .join(("Clients:",
 
680
                                             "+: Enable",
 
681
                                             "-: Disable",
 
682
                                             "R: Remove",
 
683
                                             "s: Start new checker",
 
684
                                             "S: Stop checker",
 
685
                                             "C: Checker OK",
 
686
                                             "a: Approve",
 
687
                                             "d: Deny"))))
 
688
                self.refresh()
 
689
            elif key == "tab":
 
690
                if self.topwidget.get_focus() is self.logbox:
 
691
                    self.topwidget.set_focus(0)
 
692
                else:
 
693
                    self.topwidget.set_focus(self.logbox)
 
694
                self.refresh()
 
695
            #elif (key == "end" or key == "meta >" or key == "G"
 
696
            #      or key == ">"):
 
697
            #    pass            # xxx end-of-buffer
 
698
            #elif (key == "home" or key == "meta <" or key == "g"
 
699
            #      or key == "<"):
 
700
            #    pass            # xxx beginning-of-buffer
 
701
            #elif key == "ctrl e" or key == "$":
 
702
            #    pass            # xxx move-end-of-line
 
703
            #elif key == "ctrl a" or key == "^":
 
704
            #    pass            # xxx move-beginning-of-line
 
705
            #elif key == "ctrl b" or key == "meta (" or key == "h":
 
706
            #    pass            # xxx left
 
707
            #elif key == "ctrl f" or key == "meta )" or key == "l":
 
708
            #    pass            # xxx right
 
709
            #elif key == "a":
 
710
            #    pass            # scroll up log
 
711
            #elif key == "z":
 
712
            #    pass            # scroll down log
 
713
            elif self.topwidget.selectable():
 
714
                self.topwidget.keypress(self.size, key)
 
715
                self.refresh()
 
716
        return True
 
717
 
 
718
ui = UserInterface()
 
719
try:
 
720
    ui.run()
 
721
except KeyboardInterrupt:
 
722
    ui.screen.stop()
 
723
except Exception, e:
 
724
    ui.log_message(unicode(e))
 
725
    ui.screen.stop()
 
726
    raise