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  • Committer: Teddy Hogeborn
  • Date: 2008-07-19 18:43:24 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080719184324-iwhoa5in75xa0u2u
* mandos-clients.conf ([foo]/dn, [foo]/password, [braxen_client]/dn,
                       [braxen_client]/password): Removed.
  ([foo]/fingerprint, [braxen_client]/fingerprint): New.
  ([foo]/checker): New.
  ([foo]/secfile): New.
  ([braxen_client]/secret): New.

* server.py: New "--debug" option to set debug flag.  Removed "cert",
             "key", "ca", "crl", and "cred" variables.  Added default
             value for "checker" config file setting.  Do not pass
             credentials to IPv6_TCPServer constructor.
  (debug): New global debug flag.  Used by most debugging output code.
  (Client.__init__): Keyword argument "dn" replaced by "fingerprint",
                     "password" renamed to "secret", and "passfile"
                     renamed to "secfile".  New keyword argument
                     "checker". All callers changed.
  (Client.dn): Removed.
  (Client.fingerprint): New.
  (Client.password): Renamed to "secret"; all users changed.
  (Client.passfile): Renamed to "secfile"; all users changed.
  (Client.timeout, Client.interval): Changed to be properties; now
                                     automatically updates the
                                     "_timeout_milliseconds" and
                                     "_interval_milliseconds" values.
  (Client.timeout_milliseconds): Renamed to "_timeout_milliseconds".
  (Client.interval_milliseconds): Renamed to "_interval_milliseconds".
  (Client.check_command): New.
  (Client.start_checker): Use the new "check_command" attribute.
  (peer_certificate, fingerprint): New functions.

  (tcp_handler.handle): Use ClientSession with empty credentials
                        object instead of ServerSession.  Set gnutls
                        priority string.  Do not verify peer.  Use
                        fingerprint instead of DN when searching for
                        clients.  Bug fix: Loop sending data so even large
                        secret data strings are sent.
  (IPv6_TCPServer.credentials): Removed.
  (if_nametoindex): Do not import ctypes since that is now imported
                    globally.

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mandos-monitor
1
 
#!/usr/bin/python
2
 
# -*- mode: python; coding: utf-8 -*-
3
 
 
4
 
from __future__ import division, absolute_import, with_statement
5
 
 
6
 
import sys
7
 
import os
8
 
import signal
9
 
 
10
 
import datetime
11
 
 
12
 
import urwid.curses_display
13
 
import urwid
14
 
 
15
 
from dbus.mainloop.glib import DBusGMainLoop
16
 
import gobject
17
 
 
18
 
import dbus
19
 
 
20
 
import UserList
21
 
 
22
 
import locale
23
 
 
24
 
locale.setlocale(locale.LC_ALL, u'')
25
 
 
26
 
import logging
27
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
28
 
 
29
 
# Some useful constants
30
 
domain = 'se.bsnet.fukt'
31
 
server_interface = domain + '.Mandos'
32
 
client_interface = domain + '.Mandos.Client'
33
 
version = "1.0.15"
34
 
 
35
 
# Always run in monochrome mode
36
 
urwid.curses_display.curses.has_colors = lambda : False
37
 
 
38
 
# Urwid doesn't support blinking, but we want it.  Since we have no
39
 
# use for underline on its own, we make underline also always blink.
40
 
urwid.curses_display.curses.A_UNDERLINE |= (
41
 
    urwid.curses_display.curses.A_BLINK)
42
 
 
43
 
def isoformat_to_datetime(iso):
44
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
45
 
    if not iso:
46
 
        return None
47
 
    d, t = iso.split(u"T", 1)
48
 
    year, month, day = d.split(u"-", 2)
49
 
    hour, minute, second = t.split(u":", 2)
50
 
    second, fraction = divmod(float(second), 1)
51
 
    return datetime.datetime(int(year),
52
 
                             int(month),
53
 
                             int(day),
54
 
                             int(hour),
55
 
                             int(minute),
56
 
                             int(second),           # Whole seconds
57
 
                             int(fraction*1000000)) # Microseconds
58
 
 
59
 
class MandosClientPropertyCache(object):
60
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
61
 
    properties and calls a hook function when any of them are
62
 
    changed.
63
 
    """
64
 
    def __init__(self, proxy_object=None, *args, **kwargs):
65
 
        self.proxy = proxy_object # Mandos Client proxy object
66
 
        
67
 
        self.properties = dict()
68
 
        self.proxy.connect_to_signal(u"PropertyChanged",
69
 
                                     self.property_changed,
70
 
                                     client_interface,
71
 
                                     byte_arrays=True)
72
 
        
73
 
        self.properties.update(
74
 
            self.proxy.GetAll(client_interface,
75
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
76
 
 
77
 
        #XXX This break good super behaviour!
78
 
#        super(MandosClientPropertyCache, self).__init__(
79
 
#            *args, **kwargs)
80
 
    
81
 
    def property_changed(self, property=None, value=None):
82
 
        """This is called whenever we get a PropertyChanged signal
83
 
        It updates the changed property in the "properties" dict.
84
 
        """
85
 
        # Update properties dict with new value
86
 
        self.properties[property] = value
87
 
 
88
 
 
89
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
90
 
    """A Mandos Client which is visible on the screen.
91
 
    """
92
 
    
93
 
    def __init__(self, server_proxy_object=None, update_hook=None,
94
 
                 delete_hook=None, logger=None, *args, **kwargs):
95
 
        # Called on update
96
 
        self.update_hook = update_hook
97
 
        # Called on delete
98
 
        self.delete_hook = delete_hook
99
 
        # Mandos Server proxy object
100
 
        self.server_proxy_object = server_proxy_object
101
 
        # Logger
102
 
        self.logger = logger
103
 
        
104
 
        self._update_timer_callback_tag = None
105
 
        self._update_timer_callback_lock = 0
106
 
        self.last_checker_failed = False
107
 
        
108
 
        # The widget shown normally
109
 
        self._text_widget = urwid.Text(u"")
110
 
        # The widget shown when we have focus
111
 
        self._focus_text_widget = urwid.Text(u"")
112
 
        super(MandosClientWidget, self).__init__(
113
 
            update_hook=update_hook, delete_hook=delete_hook,
114
 
            *args, **kwargs)
115
 
        self.update()
116
 
        self.opened = False
117
 
        
118
 
        last_checked_ok = isoformat_to_datetime(self.properties
119
 
                                                [u"LastCheckedOK"])
120
 
        if last_checked_ok is None:
121
 
            self.last_checker_failed = True
122
 
        else:
123
 
            self.last_checker_failed = ((datetime.datetime.utcnow()
124
 
                                         - last_checked_ok)
125
 
                                        > datetime.timedelta
126
 
                                        (milliseconds=
127
 
                                         self.properties
128
 
                                         [u"Interval"]))
129
 
        
130
 
        if self.last_checker_failed:
131
 
            self.using_timer(True)
132
 
        
133
 
        if self.need_approval:
134
 
            self.using_timer(True)
135
 
        
136
 
        self.proxy.connect_to_signal(u"CheckerCompleted",
137
 
                                     self.checker_completed,
138
 
                                     client_interface,
139
 
                                     byte_arrays=True)
140
 
        self.proxy.connect_to_signal(u"CheckerStarted",
141
 
                                     self.checker_started,
142
 
                                     client_interface,
143
 
                                     byte_arrays=True)
144
 
        self.proxy.connect_to_signal(u"GotSecret",
145
 
                                     self.got_secret,
146
 
                                     client_interface,
147
 
                                     byte_arrays=True)
148
 
        self.proxy.connect_to_signal(u"NeedApproval",
149
 
                                     self.need_approval,
150
 
                                     client_interface,
151
 
                                     byte_arrays=True)
152
 
        self.proxy.connect_to_signal(u"Rejected",
153
 
                                     self.rejected,
154
 
                                     client_interface,
155
 
                                     byte_arrays=True)
156
 
    
157
 
    def property_changed(self, property=None, value=None):
158
 
        super(self, MandosClientWidget).property_changed(property,
159
 
                                                         value)
160
 
        if property == u"ApprovalPending":
161
 
            using_timer(bool(value))
162
 
        
163
 
    def using_timer(self, flag):
164
 
        """Call this method with True or False when timer should be
165
 
        activated or deactivated.
166
 
        """
167
 
        old = self._update_timer_callback_lock
168
 
        if flag:
169
 
            self._update_timer_callback_lock += 1
170
 
        else:
171
 
            self._update_timer_callback_lock -= 1
172
 
        if old == 0 and self._update_timer_callback_lock:
173
 
            self._update_timer_callback_tag = (gobject.timeout_add
174
 
                                               (1000,
175
 
                                                self.update_timer))
176
 
        elif old and self._update_timer_callback_lock == 0:
177
 
            gobject.source_remove(self._update_timer_callback_tag)
178
 
            self._update_timer_callback_tag = None
179
 
    
180
 
    def checker_completed(self, exitstatus, condition, command):
181
 
        if exitstatus == 0:
182
 
            if self.last_checker_failed:
183
 
                self.last_checker_failed = False
184
 
                self.using_timer(False)
185
 
            #self.logger(u'Checker for client %s (command "%s")'
186
 
            #            u' was successful'
187
 
            #            % (self.properties[u"Name"], command))
188
 
            self.update()
189
 
            return
190
 
        # Checker failed
191
 
        if not self.last_checker_failed:
192
 
            self.last_checker_failed = True
193
 
            self.using_timer(True)
194
 
        if os.WIFEXITED(condition):
195
 
            self.logger(u'Checker for client %s (command "%s")'
196
 
                        u' failed with exit code %s'
197
 
                        % (self.properties[u"Name"], command,
198
 
                           os.WEXITSTATUS(condition)))
199
 
        elif os.WIFSIGNALED(condition):
200
 
            self.logger(u'Checker for client %s (command "%s")'
201
 
                        u' was killed by signal %s'
202
 
                        % (self.properties[u"Name"], command,
203
 
                           os.WTERMSIG(condition)))
204
 
        elif os.WCOREDUMP(condition):
205
 
            self.logger(u'Checker for client %s (command "%s")'
206
 
                        u' dumped core'
207
 
                        % (self.properties[u"Name"], command))
208
 
        else:
209
 
            self.logger(u'Checker for client %s completed'
210
 
                        u' mysteriously')
211
 
        self.update()
212
 
    
213
 
    def checker_started(self, command):
214
 
        #self.logger(u'Client %s started checker "%s"'
215
 
        #            % (self.properties[u"Name"], unicode(command)))
216
 
        pass
217
 
    
218
 
    def got_secret(self):
219
 
        self.last_checker_failed = False
220
 
        self.logger(u'Client %s received its secret'
221
 
                    % self.properties[u"Name"])
222
 
    
223
 
    def need_approval(self, timeout, default):
224
 
        if not default:
225
 
            message = u'Client %s needs approval within %s seconds'
226
 
        else:
227
 
            message = u'Client %s will get its secret in %s seconds'
228
 
        self.logger(message
229
 
                    % (self.properties[u"Name"], timeout/1000))
230
 
        self.using_timer(True)
231
 
    
232
 
    def rejected(self, reason):
233
 
        self.logger(u'Client %s was rejected; reason: %s'
234
 
                    % (self.properties[u"Name"], reason))
235
 
    
236
 
    def selectable(self):
237
 
        """Make this a "selectable" widget.
238
 
        This overrides the method from urwid.FlowWidget."""
239
 
        return True
240
 
    
241
 
    def rows(self, (maxcol,), focus=False):
242
 
        """How many rows this widget will occupy might depend on
243
 
        whether we have focus or not.
244
 
        This overrides the method from urwid.FlowWidget"""
245
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
246
 
    
247
 
    def current_widget(self, focus=False):
248
 
        if focus or self.opened:
249
 
            return self._focus_widget
250
 
        return self._widget
251
 
    
252
 
    def update(self):
253
 
        "Called when what is visible on the screen should be updated."
254
 
        # How to add standout mode to a style
255
 
        with_standout = { u"normal": u"standout",
256
 
                          u"bold": u"bold-standout",
257
 
                          u"underline-blink":
258
 
                              u"underline-blink-standout",
259
 
                          u"bold-underline-blink":
260
 
                              u"bold-underline-blink-standout",
261
 
                          }
262
 
 
263
 
        # Rebuild focus and non-focus widgets using current properties
264
 
 
265
 
        # Base part of a client. Name!
266
 
        base = (u'%(name)s: '
267
 
                      % {u"name": self.properties[u"Name"]})
268
 
        if not self.properties[u"Enabled"]:
269
 
            message = u"DISABLED"
270
 
        elif self.properties[u"ApprovalPending"]:
271
 
            timeout = datetime.timedelta(milliseconds
272
 
                                         = self.properties
273
 
                                         [u"ApprovalDelay"])
274
 
            last_approval_request = isoformat_to_datetime(
275
 
                self.properties[u"LastApprovalRequest"])
276
 
            if last_approval_request is not None:
277
 
                timer = timeout - (datetime.datetime.utcnow()
278
 
                                   - last_approval_request)
279
 
            else:
280
 
                timer = datetime.timedelta()
281
 
            if self.properties[u"ApprovedByDefault"]:
282
 
                message = u"Approval in %s. (d)eny?"
283
 
            else:
284
 
                message = u"Denial in %s. (a)pprove?"
285
 
            message = message % unicode(timer).rsplit(".", 1)[0]
286
 
        elif self.last_checker_failed:
287
 
            timeout = datetime.timedelta(milliseconds
288
 
                                         = self.properties
289
 
                                         [u"Timeout"])
290
 
            last_ok = isoformat_to_datetime(
291
 
                max((self.properties[u"LastCheckedOK"]
292
 
                     or self.properties[u"Created"]),
293
 
                    self.properties[u"LastEnabled"]))
294
 
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
295
 
            message = (u'A checker has failed! Time until client'
296
 
                       u' gets disabled: %s'
297
 
                           % unicode(timer).rsplit(".", 1)[0])
298
 
        else:
299
 
            message = u"enabled"
300
 
        self._text = "%s%s" % (base, message)
301
 
            
302
 
        if not urwid.supports_unicode():
303
 
            self._text = self._text.encode("ascii", "replace")
304
 
        textlist = [(u"normal", self._text)]
305
 
        self._text_widget.set_text(textlist)
306
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
307
 
                                           text[1])
308
 
                                          if isinstance(text, tuple)
309
 
                                          else text
310
 
                                          for text in textlist])
311
 
        self._widget = self._text_widget
312
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
313
 
                                            "standout")
314
 
        # Run update hook, if any
315
 
        if self.update_hook is not None:
316
 
            self.update_hook()
317
 
    
318
 
    def update_timer(self):
319
 
        "called by gobject"
320
 
        self.update()
321
 
        return True             # Keep calling this
322
 
    
323
 
    def delete(self):
324
 
        if self._update_timer_callback_tag is not None:
325
 
            gobject.source_remove(self._update_timer_callback_tag)
326
 
            self._update_timer_callback_tag = None
327
 
        if self.delete_hook is not None:
328
 
            self.delete_hook(self)
329
 
    
330
 
    def render(self, (maxcol,), focus=False):
331
 
        """Render differently if we have focus.
332
 
        This overrides the method from urwid.FlowWidget"""
333
 
        return self.current_widget(focus).render((maxcol,),
334
 
                                                 focus=focus)
335
 
    
336
 
    def keypress(self, (maxcol,), key):
337
 
        """Handle keys.
338
 
        This overrides the method from urwid.FlowWidget"""
339
 
        if key == u"+":
340
 
            self.proxy.Enable(dbus_interface = client_interface)
341
 
        elif key == u"-":
342
 
            self.proxy.Disable(dbus_interface = client_interface)
343
 
        elif key == u"a":
344
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
345
 
                               dbus_interface = client_interface)
346
 
        elif key == u"d":
347
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
348
 
                                  dbus_interface = client_interface)
349
 
        elif key == u"r" or key == u"_" or key == u"ctrl k":
350
 
            self.server_proxy_object.RemoveClient(self.proxy
351
 
                                                  .object_path)
352
 
        elif key == u"s":
353
 
            self.proxy.StartChecker(dbus_interface = client_interface)
354
 
        elif key == u"S":
355
 
            self.proxy.StopChecker(dbus_interface = client_interface)
356
 
        elif key == u"C":
357
 
            self.proxy.CheckedOK(dbus_interface = client_interface)
358
 
        # xxx
359
 
#         elif key == u"p" or key == "=":
360
 
#             self.proxy.pause()
361
 
#         elif key == u"u" or key == ":":
362
 
#             self.proxy.unpause()
363
 
#         elif key == u"RET":
364
 
#             self.open()
365
 
        else:
366
 
            return key
367
 
    
368
 
    def property_changed(self, property=None, value=None,
369
 
                         *args, **kwargs):
370
 
        """Call self.update() if old value is not new value.
371
 
        This overrides the method from MandosClientPropertyCache"""
372
 
        property_name = unicode(property)
373
 
        old_value = self.properties.get(property_name)
374
 
        super(MandosClientWidget, self).property_changed(
375
 
            property=property, value=value, *args, **kwargs)
376
 
        if self.properties.get(property_name) != old_value:
377
 
            self.update()
378
 
 
379
 
 
380
 
class ConstrainedListBox(urwid.ListBox):
381
 
    """Like a normal urwid.ListBox, but will consume all "up" or
382
 
    "down" key presses, thus not allowing any containing widgets to
383
 
    use them as an excuse to shift focus away from this widget.
384
 
    """
385
 
    def keypress(self, (maxcol, maxrow), key):
386
 
        ret = super(ConstrainedListBox, self).keypress((maxcol,
387
 
                                                        maxrow), key)
388
 
        if ret in (u"up", u"down"):
389
 
            return
390
 
        return ret
391
 
 
392
 
 
393
 
class UserInterface(object):
394
 
    """This is the entire user interface - the whole screen
395
 
    with boxes, lists of client widgets, etc.
396
 
    """
397
 
    def __init__(self, max_log_length=1000):
398
 
        DBusGMainLoop(set_as_default=True)
399
 
        
400
 
        self.screen = urwid.curses_display.Screen()
401
 
        
402
 
        self.screen.register_palette((
403
 
                (u"normal",
404
 
                 u"default", u"default", None),
405
 
                (u"bold",
406
 
                 u"default", u"default", u"bold"),
407
 
                (u"underline-blink",
408
 
                 u"default", u"default", u"underline"),
409
 
                (u"standout",
410
 
                 u"default", u"default", u"standout"),
411
 
                (u"bold-underline-blink",
412
 
                 u"default", u"default", (u"bold", u"underline")),
413
 
                (u"bold-standout",
414
 
                 u"default", u"default", (u"bold", u"standout")),
415
 
                (u"underline-blink-standout",
416
 
                 u"default", u"default", (u"underline", u"standout")),
417
 
                (u"bold-underline-blink-standout",
418
 
                 u"default", u"default", (u"bold", u"underline",
419
 
                                          u"standout")),
420
 
                ))
421
 
        
422
 
        if urwid.supports_unicode():
423
 
            self.divider = u"─" # \u2500
424
 
            #self.divider = u"━" # \u2501
425
 
        else:
426
 
            #self.divider = u"-" # \u002d
427
 
            self.divider = u"_" # \u005f
428
 
        
429
 
        self.screen.start()
430
 
        
431
 
        self.size = self.screen.get_cols_rows()
432
 
        
433
 
        self.clients = urwid.SimpleListWalker([])
434
 
        self.clients_dict = {}
435
 
        
436
 
        # We will add Text widgets to this list
437
 
        self.log = []
438
 
        self.max_log_length = max_log_length
439
 
        
440
 
        # We keep a reference to the log widget so we can remove it
441
 
        # from the ListWalker without it getting destroyed
442
 
        self.logbox = ConstrainedListBox(self.log)
443
 
        
444
 
        # This keeps track of whether self.uilist currently has
445
 
        # self.logbox in it or not
446
 
        self.log_visible = True
447
 
        self.log_wrap = u"any"
448
 
        
449
 
        self.rebuild()
450
 
        self.log_message_raw((u"bold",
451
 
                              u"Mandos Monitor version " + version))
452
 
        self.log_message_raw((u"bold",
453
 
                              u"q: Quit  ?: Help"))
454
 
        
455
 
        self.busname = domain + '.Mandos'
456
 
        self.main_loop = gobject.MainLoop()
457
 
        self.bus = dbus.SystemBus()
458
 
        mandos_dbus_objc = self.bus.get_object(
459
 
            self.busname, u"/", follow_name_owner_changes=True)
460
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
461
 
                                          dbus_interface
462
 
                                          = server_interface)
463
 
        try:
464
 
            mandos_clients = (self.mandos_serv
465
 
                              .GetAllClientsWithProperties())
466
 
        except dbus.exceptions.DBusException:
467
 
            mandos_clients = dbus.Dictionary()
468
 
        
469
 
        (self.mandos_serv
470
 
         .connect_to_signal(u"ClientRemoved",
471
 
                            self.find_and_remove_client,
472
 
                            dbus_interface=server_interface,
473
 
                            byte_arrays=True))
474
 
        (self.mandos_serv
475
 
         .connect_to_signal(u"ClientAdded",
476
 
                            self.add_new_client,
477
 
                            dbus_interface=server_interface,
478
 
                            byte_arrays=True))
479
 
        (self.mandos_serv
480
 
         .connect_to_signal(u"ClientNotFound",
481
 
                            self.client_not_found,
482
 
                            dbus_interface=server_interface,
483
 
                            byte_arrays=True))
484
 
        for path, client in mandos_clients.iteritems():
485
 
            client_proxy_object = self.bus.get_object(self.busname,
486
 
                                                      path)
487
 
            self.add_client(MandosClientWidget(server_proxy_object
488
 
                                               =self.mandos_serv,
489
 
                                               proxy_object
490
 
                                               =client_proxy_object,
491
 
                                               properties=client,
492
 
                                               update_hook
493
 
                                               =self.refresh,
494
 
                                               delete_hook
495
 
                                               =self.remove_client,
496
 
                                               logger
497
 
                                               =self.log_message),
498
 
                            path=path)
499
 
    
500
 
    def client_not_found(self, fingerprint, address):
501
 
        self.log_message((u"Client with address %s and fingerprint %s"
502
 
                          u" could not be found" % (address,
503
 
                                                    fingerprint)))
504
 
    
505
 
    def rebuild(self):
506
 
        """This rebuilds the User Interface.
507
 
        Call this when the widget layout needs to change"""
508
 
        self.uilist = []
509
 
        #self.uilist.append(urwid.ListBox(self.clients))
510
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
511
 
                                                          clients),
512
 
                                       #header=urwid.Divider(),
513
 
                                       header=None,
514
 
                                       footer=
515
 
                                       urwid.Divider(div_char=
516
 
                                                     self.divider)))
517
 
        if self.log_visible:
518
 
            self.uilist.append(self.logbox)
519
 
            pass
520
 
        self.topwidget = urwid.Pile(self.uilist)
521
 
    
522
 
    def log_message(self, message):
523
 
        timestamp = datetime.datetime.now().isoformat()
524
 
        self.log_message_raw(timestamp + u": " + message)
525
 
    
526
 
    def log_message_raw(self, markup):
527
 
        """Add a log message to the log buffer."""
528
 
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
529
 
        if (self.max_log_length
530
 
            and len(self.log) > self.max_log_length):
531
 
            del self.log[0:len(self.log)-self.max_log_length-1]
532
 
        self.logbox.set_focus(len(self.logbox.body.contents),
533
 
                              coming_from=u"above")
534
 
        self.refresh()
535
 
    
536
 
    def toggle_log_display(self):
537
 
        """Toggle visibility of the log buffer."""
538
 
        self.log_visible = not self.log_visible
539
 
        self.rebuild()
540
 
        #self.log_message(u"Log visibility changed to: "
541
 
        #                 + unicode(self.log_visible))
542
 
    
543
 
    def change_log_display(self):
544
 
        """Change type of log display.
545
 
        Currently, this toggles wrapping of text lines."""
546
 
        if self.log_wrap == u"clip":
547
 
            self.log_wrap = u"any"
548
 
        else:
549
 
            self.log_wrap = u"clip"
550
 
        for textwidget in self.log:
551
 
            textwidget.set_wrap_mode(self.log_wrap)
552
 
        #self.log_message(u"Wrap mode: " + self.log_wrap)
553
 
    
554
 
    def find_and_remove_client(self, path, name):
555
 
        """Find an client from its object path and remove it.
556
 
        
557
 
        This is connected to the ClientRemoved signal from the
558
 
        Mandos server object."""
559
 
        try:
560
 
            client = self.clients_dict[path]
561
 
        except KeyError:
562
 
            # not found?
563
 
            return
564
 
        self.remove_client(client, path)
565
 
    
566
 
    def add_new_client(self, path):
567
 
        client_proxy_object = self.bus.get_object(self.busname, path)
568
 
        self.add_client(MandosClientWidget(server_proxy_object
569
 
                                           =self.mandos_serv,
570
 
                                           proxy_object
571
 
                                           =client_proxy_object,
572
 
                                           update_hook
573
 
                                           =self.refresh,
574
 
                                           delete_hook
575
 
                                           =self.remove_client,
576
 
                                           logger
577
 
                                           =self.log_message),
578
 
                        path=path)
579
 
    
580
 
    def add_client(self, client, path=None):
581
 
        self.clients.append(client)
582
 
        if path is None:
583
 
            path = client.proxy.object_path
584
 
        self.clients_dict[path] = client
585
 
        self.clients.sort(None, lambda c: c.properties[u"Name"])
586
 
        self.refresh()
587
 
    
588
 
    def remove_client(self, client, path=None):
589
 
        self.clients.remove(client)
590
 
        if path is None:
591
 
            path = client.proxy.object_path
592
 
        del self.clients_dict[path]
593
 
        if not self.clients_dict:
594
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
595
 
            # is completely emptied, we need to recreate it.
596
 
            self.clients = urwid.SimpleListWalker([])
597
 
            self.rebuild()
598
 
        self.refresh()
599
 
    
600
 
    def refresh(self):
601
 
        """Redraw the screen"""
602
 
        canvas = self.topwidget.render(self.size, focus=True)
603
 
        self.screen.draw_screen(self.size, canvas)
604
 
    
605
 
    def run(self):
606
 
        """Start the main loop and exit when it's done."""
607
 
        self.refresh()
608
 
        self._input_callback_tag = (gobject.io_add_watch
609
 
                                    (sys.stdin.fileno(),
610
 
                                     gobject.IO_IN,
611
 
                                     self.process_input))
612
 
        self.main_loop.run()
613
 
        # Main loop has finished, we should close everything now
614
 
        gobject.source_remove(self._input_callback_tag)
615
 
        self.screen.stop()
616
 
    
617
 
    def stop(self):
618
 
        self.main_loop.quit()
619
 
    
620
 
    def process_input(self, source, condition):
621
 
        keys = self.screen.get_input()
622
 
        translations = { u"ctrl n": u"down",      # Emacs
623
 
                         u"ctrl p": u"up",        # Emacs
624
 
                         u"ctrl v": u"page down", # Emacs
625
 
                         u"meta v": u"page up",   # Emacs
626
 
                         u" ": u"page down",      # less
627
 
                         u"f": u"page down",      # less
628
 
                         u"b": u"page up",        # less
629
 
                         u"j": u"down",           # vi
630
 
                         u"k": u"up",             # vi
631
 
                         }
632
 
        for key in keys:
633
 
            try:
634
 
                key = translations[key]
635
 
            except KeyError:    # :-)
636
 
                pass
637
 
            
638
 
            if key == u"q" or key == u"Q":
639
 
                self.stop()
640
 
                break
641
 
            elif key == u"window resize":
642
 
                self.size = self.screen.get_cols_rows()
643
 
                self.refresh()
644
 
            elif key == u"\f":  # Ctrl-L
645
 
                self.refresh()
646
 
            elif key == u"l" or key == u"D":
647
 
                self.toggle_log_display()
648
 
                self.refresh()
649
 
            elif key == u"w" or key == u"i":
650
 
                self.change_log_display()
651
 
                self.refresh()
652
 
            elif key == u"?" or key == u"f1" or key == u"esc":
653
 
                if not self.log_visible:
654
 
                    self.log_visible = True
655
 
                    self.rebuild()
656
 
                self.log_message_raw((u"bold",
657
 
                                      u"  ".
658
 
                                      join((u"q: Quit",
659
 
                                            u"?: Help",
660
 
                                            u"l: Log window toggle",
661
 
                                            u"TAB: Switch window",
662
 
                                            u"w: Wrap (log)"))))
663
 
                self.log_message_raw((u"bold",
664
 
                                      u"  "
665
 
                                      .join((u"Clients:",
666
 
                                             u"+: Enable",
667
 
                                             u"-: Disable",
668
 
                                             u"r: Remove",
669
 
                                             u"s: Start new checker",
670
 
                                             u"S: Stop checker",
671
 
                                             u"C: Checker OK",
672
 
                                             u"a: Approve",
673
 
                                             u"d: Deny"))))
674
 
                self.refresh()
675
 
            elif key == u"tab":
676
 
                if self.topwidget.get_focus() is self.logbox:
677
 
                    self.topwidget.set_focus(0)
678
 
                else:
679
 
                    self.topwidget.set_focus(self.logbox)
680
 
                self.refresh()
681
 
            #elif (key == u"end" or key == u"meta >" or key == u"G"
682
 
            #      or key == u">"):
683
 
            #    pass            # xxx end-of-buffer
684
 
            #elif (key == u"home" or key == u"meta <" or key == u"g"
685
 
            #      or key == u"<"):
686
 
            #    pass            # xxx beginning-of-buffer
687
 
            #elif key == u"ctrl e" or key == u"$":
688
 
            #    pass            # xxx move-end-of-line
689
 
            #elif key == u"ctrl a" or key == u"^":
690
 
            #    pass            # xxx move-beginning-of-line
691
 
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
692
 
            #    pass            # xxx left
693
 
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
694
 
            #    pass            # xxx right
695
 
            #elif key == u"a":
696
 
            #    pass            # scroll up log
697
 
            #elif key == u"z":
698
 
            #    pass            # scroll down log
699
 
            elif self.topwidget.selectable():
700
 
                self.topwidget.keypress(self.size, key)
701
 
                self.refresh()
702
 
        return True
703
 
 
704
 
ui = UserInterface()
705
 
try:
706
 
    ui.run()
707
 
except KeyboardInterrupt:
708
 
    ui.screen.stop()
709
 
except Exception, e:
710
 
    ui.log_message(unicode(e))
711
 
    ui.screen.stop()
712
 
    raise