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* plugins.d/mandos-client.c (run_network_hooks): Do _exit() on failure
                                                 in child process.

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mandos-monitor
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# 
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# Mandos Monitor - Control and monitor the Mandos server
5
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# 
6
 
# Copyright © 2009-2012 Teddy Hogeborn
7
 
# Copyright © 2009-2012 Björn Påhlsson
 
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# Copyright © 2009-2011 Teddy Hogeborn
 
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# Copyright © 2009-2011 Björn Påhlsson
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# 
9
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# This program is free software: you can redistribute it and/or modify
10
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# it under the terms of the GNU General Public License as published by
17
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#     GNU General Public License for more details.
18
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# 
19
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/>.
 
20
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
22
21
# 
23
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# Contact the authors at <mandos@recompile.se>.
24
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# 
26
25
from __future__ import (division, absolute_import, print_function,
27
26
                        unicode_literals)
28
27
 
29
 
from future_builtins import *
30
 
 
31
28
import sys
32
29
import os
33
30
import signal
55
52
domain = 'se.recompile'
56
53
server_interface = domain + '.Mandos'
57
54
client_interface = domain + '.Mandos.Client'
58
 
version = "1.5.5"
 
55
version = "1.4.1"
59
56
 
60
57
# Always run in monochrome mode
61
58
urwid.curses_display.curses.has_colors = lambda : False
86
83
    properties and calls a hook function when any of them are
87
84
    changed.
88
85
    """
89
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
86
    def __init__(self, proxy_object=None, *args, **kwargs):
90
87
        self.proxy = proxy_object # Mandos Client proxy object
91
 
        self.properties = dict() if properties is None else properties
 
88
        
 
89
        self.properties = dict()
92
90
        self.property_changed_match = (
93
91
            self.proxy.connect_to_signal("PropertyChanged",
94
 
                                         self._property_changed,
 
92
                                         self.property_changed,
95
93
                                         client_interface,
96
94
                                         byte_arrays=True))
97
95
        
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)
 
96
        self.properties.update(
 
97
            self.proxy.GetAll(client_interface,
 
98
                              dbus_interface = dbus.PROPERTIES_IFACE))
 
99
 
 
100
        #XXX This breaks good super behaviour
 
101
#        super(MandosClientPropertyCache, self).__init__(
 
102
#            *args, **kwargs)
109
103
    
110
104
    def property_changed(self, property=None, value=None):
111
105
        """This is called whenever we get a PropertyChanged signal
114
108
        # Update properties dict with new value
115
109
        self.properties[property] = value
116
110
    
117
 
    def delete(self):
 
111
    def delete(self, *args, **kwargs):
118
112
        self.property_changed_match.remove()
 
113
        super(MandosClientPropertyCache, self).__init__(
 
114
            *args, **kwargs)
119
115
 
120
116
 
121
117
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
123
119
    """
124
120
    
125
121
    def __init__(self, server_proxy_object=None, update_hook=None,
126
 
                 delete_hook=None, logger=None, **kwargs):
 
122
                 delete_hook=None, logger=None, *args, **kwargs):
127
123
        # Called on update
128
124
        self.update_hook = update_hook
129
125
        # Called on delete
134
130
        self.logger = logger
135
131
        
136
132
        self._update_timer_callback_tag = None
 
133
        self._update_timer_callback_lock = 0
 
134
        self.last_checker_failed = False
137
135
        
138
136
        # The widget shown normally
139
137
        self._text_widget = urwid.Text("")
140
138
        # The widget shown when we have focus
141
139
        self._focus_text_widget = urwid.Text("")
142
 
        super(MandosClientWidget, self).__init__(**kwargs)
 
140
        super(MandosClientWidget, self).__init__(
 
141
            update_hook=update_hook, delete_hook=delete_hook,
 
142
            *args, **kwargs)
143
143
        self.update()
144
144
        self.opened = False
145
145
        
 
146
        last_checked_ok = isoformat_to_datetime(self.properties
 
147
                                                ["LastCheckedOK"])
 
148
        if last_checked_ok is None:
 
149
            self.last_checker_failed = True
 
150
        else:
 
151
            self.last_checker_failed = ((datetime.datetime.utcnow()
 
152
                                         - last_checked_ok)
 
153
                                        > datetime.timedelta
 
154
                                        (milliseconds=
 
155
                                         self.properties
 
156
                                         ["Interval"]))
 
157
        
 
158
        if self.last_checker_failed:
 
159
            self.using_timer(True)
 
160
        
 
161
        if self.need_approval:
 
162
            self.using_timer(True)
 
163
        
146
164
        self.match_objects = (
147
165
            self.proxy.connect_to_signal("CheckerCompleted",
148
166
                                         self.checker_completed,
164
182
                                         self.rejected,
165
183
                                         client_interface,
166
184
                                         byte_arrays=True))
167
 
        #self.logger('Created client {0}'
168
 
        #            .format(self.properties["Name"]))
 
185
        #self.logger('Created client %s' % (self.properties["Name"]))
169
186
    
 
187
    def property_changed(self, property=None, value=None):
 
188
        super(self, MandosClientWidget).property_changed(property,
 
189
                                                         value)
 
190
        if property == "ApprovalPending":
 
191
            using_timer(bool(value))
 
192
        
170
193
    def using_timer(self, flag):
171
194
        """Call this method with True or False when timer should be
172
195
        activated or deactivated.
173
196
        """
174
 
        if flag and self._update_timer_callback_tag is None:
 
197
        old = self._update_timer_callback_lock
 
198
        if flag:
 
199
            self._update_timer_callback_lock += 1
 
200
        else:
 
201
            self._update_timer_callback_lock -= 1
 
202
        if old == 0 and self._update_timer_callback_lock:
175
203
            # Will update the shown timer value every second
176
204
            self._update_timer_callback_tag = (gobject.timeout_add
177
205
                                               (1000,
178
206
                                                self.update_timer))
179
 
        elif not (flag or self._update_timer_callback_tag is None):
 
207
        elif old and self._update_timer_callback_lock == 0:
180
208
            gobject.source_remove(self._update_timer_callback_tag)
181
209
            self._update_timer_callback_tag = None
182
210
    
183
211
    def checker_completed(self, exitstatus, condition, command):
184
212
        if exitstatus == 0:
 
213
            if self.last_checker_failed:
 
214
                self.last_checker_failed = False
 
215
                self.using_timer(False)
 
216
            #self.logger('Checker for client %s (command "%s")'
 
217
            #            ' was successful'
 
218
            #            % (self.properties["Name"], command))
185
219
            self.update()
186
220
            return
187
221
        # Checker failed
 
222
        if not self.last_checker_failed:
 
223
            self.last_checker_failed = True
 
224
            self.using_timer(True)
188
225
        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)))
 
226
            self.logger('Checker for client %s (command "%s")'
 
227
                        ' failed with exit code %s'
 
228
                        % (self.properties["Name"], command,
 
229
                           os.WEXITSTATUS(condition)))
193
230
        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)))
 
231
            self.logger('Checker for client %s (command "%s")'
 
232
                        ' was killed by signal %s'
 
233
                        % (self.properties["Name"], command,
 
234
                           os.WTERMSIG(condition)))
198
235
        elif os.WCOREDUMP(condition):
199
 
            self.logger('Checker for client {0} (command "{1}")'
 
236
            self.logger('Checker for client %s (command "%s")'
200
237
                        ' dumped core'
201
 
                        .format(self.properties["Name"], command))
 
238
                        % (self.properties["Name"], command))
202
239
        else:
203
 
            self.logger('Checker for client {0} completed'
204
 
                        ' mysteriously'
205
 
                        .format(self.properties["Name"]))
 
240
            self.logger('Checker for client %s completed'
 
241
                        ' mysteriously')
206
242
        self.update()
207
243
    
208
244
    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)))
 
245
        #self.logger('Client %s started checker "%s"'
 
246
        #            % (self.properties["Name"], unicode(command)))
214
247
        pass
215
248
    
216
249
    def got_secret(self):
217
 
        self.logger('Client {0} received its secret'
218
 
                    .format(self.properties["Name"]))
 
250
        self.last_checker_failed = False
 
251
        self.logger('Client %s received its secret'
 
252
                    % self.properties["Name"])
219
253
    
220
254
    def need_approval(self, timeout, default):
221
255
        if not default:
222
 
            message = 'Client {0} needs approval within {1} seconds'
 
256
            message = 'Client %s needs approval within %s seconds'
223
257
        else:
224
 
            message = 'Client {0} will get its secret in {1} seconds'
225
 
        self.logger(message.format(self.properties["Name"],
226
 
                                   timeout/1000))
 
258
            message = 'Client %s will get its secret in %s seconds'
 
259
        self.logger(message
 
260
                    % (self.properties["Name"], timeout/1000))
 
261
        self.using_timer(True)
227
262
    
228
263
    def rejected(self, reason):
229
 
        self.logger('Client {0} was rejected; reason: {1}'
230
 
                    .format(self.properties["Name"], reason))
 
264
        self.logger('Client %s was rejected; reason: %s'
 
265
                    % (self.properties["Name"], reason))
231
266
    
232
267
    def selectable(self):
233
268
        """Make this a "selectable" widget.
255
290
                          "bold-underline-blink":
256
291
                              "bold-underline-blink-standout",
257
292
                          }
258
 
        
 
293
 
259
294
        # Rebuild focus and non-focus widgets using current properties
260
 
        
 
295
 
261
296
        # Base part of a client. Name!
262
 
        base = '{name}: '.format(name=self.properties["Name"])
 
297
        base = ('%(name)s: '
 
298
                      % {"name": self.properties["Name"]})
263
299
        if not self.properties["Enabled"]:
264
300
            message = "DISABLED"
265
 
            self.using_timer(False)
266
301
        elif self.properties["ApprovalPending"]:
267
302
            timeout = datetime.timedelta(milliseconds
268
303
                                         = self.properties
270
305
            last_approval_request = isoformat_to_datetime(
271
306
                self.properties["LastApprovalRequest"])
272
307
            if last_approval_request is not None:
273
 
                timer = max(timeout - (datetime.datetime.utcnow()
274
 
                                       - last_approval_request),
275
 
                            datetime.timedelta())
 
308
                timer = timeout - (datetime.datetime.utcnow()
 
309
                                   - last_approval_request)
276
310
            else:
277
311
                timer = datetime.timedelta()
278
312
            if self.properties["ApprovedByDefault"]:
279
 
                message = "Approval in {0}. (d)eny?"
 
313
                message = "Approval in %s. (d)eny?"
280
314
            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
 
315
                message = "Denial in %s. (a)pprove?"
 
316
            message = message % unicode(timer).rsplit(".", 1)[0]
 
317
        elif self.last_checker_failed:
 
318
            # When checker has failed, print a timer until client expires
286
319
            expires = self.properties["Expires"]
287
320
            if expires == "":
288
321
                timer = datetime.timedelta(0)
289
322
            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())
 
323
                expires = datetime.datetime.strptime(expires,
 
324
                                                     '%Y-%m-%dT%H:%M:%S.%f')
 
325
                timer = expires - datetime.datetime.utcnow()
294
326
            message = ('A checker has failed! Time until client'
295
 
                       ' gets disabled: {0}'
296
 
                       .format(unicode(timer).rsplit(".", 1)[0]))
297
 
            self.using_timer(True)
 
327
                       ' gets disabled: %s'
 
328
                           % unicode(timer).rsplit(".", 1)[0])
298
329
        else:
299
330
            message = "enabled"
300
 
            self.using_timer(False)
301
 
        self._text = "{0}{1}".format(base, message)
302
 
        
 
331
        self._text = "%s%s" % (base, message)
 
332
            
303
333
        if not urwid.supports_unicode():
304
334
            self._text = self._text.encode("ascii", "replace")
305
335
        textlist = [("normal", self._text)]
322
352
        self.update()
323
353
        return True             # Keep calling this
324
354
    
325
 
    def delete(self, **kwargs):
 
355
    def delete(self, *args, **kwargs):
326
356
        if self._update_timer_callback_tag is not None:
327
357
            gobject.source_remove(self._update_timer_callback_tag)
328
358
            self._update_timer_callback_tag = None
331
361
        self.match_objects = ()
332
362
        if self.delete_hook is not None:
333
363
            self.delete_hook(self)
334
 
        return super(MandosClientWidget, self).delete(**kwargs)
 
364
        return super(MandosClientWidget, self).delete(*args, **kwargs)
335
365
    
336
366
    def render(self, maxcolrow, focus=False):
337
367
        """Render differently if we have focus.
379
409
        else:
380
410
            return key
381
411
    
382
 
    def property_changed(self, property=None, **kwargs):
 
412
    def property_changed(self, property=None, value=None,
 
413
                         *args, **kwargs):
383
414
        """Call self.update() if old value is not new value.
384
415
        This overrides the method from MandosClientPropertyCache"""
385
416
        property_name = unicode(property)
386
417
        old_value = self.properties.get(property_name)
387
418
        super(MandosClientWidget, self).property_changed(
388
 
            property=property, **kwargs)
 
419
            property=property, value=value, *args, **kwargs)
389
420
        if self.properties.get(property_name) != old_value:
390
421
            self.update()
391
422
 
395
426
    "down" key presses, thus not allowing any containing widgets to
396
427
    use them as an excuse to shift focus away from this widget.
397
428
    """
398
 
    def keypress(self, *args, **kwargs):
399
 
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
429
    def keypress(self, maxcolrow, key):
 
430
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
400
431
        if ret in ("up", "down"):
401
432
            return
402
433
        return ret
466
497
        
467
498
        self.busname = domain + '.Mandos'
468
499
        self.main_loop = gobject.MainLoop()
 
500
        self.bus = dbus.SystemBus()
 
501
        mandos_dbus_objc = self.bus.get_object(
 
502
            self.busname, "/", follow_name_owner_changes=True)
 
503
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
504
                                          dbus_interface
 
505
                                          = server_interface)
 
506
        try:
 
507
            mandos_clients = (self.mandos_serv
 
508
                              .GetAllClientsWithProperties())
 
509
        except dbus.exceptions.DBusException:
 
510
            mandos_clients = dbus.Dictionary()
 
511
        
 
512
        (self.mandos_serv
 
513
         .connect_to_signal("ClientRemoved",
 
514
                            self.find_and_remove_client,
 
515
                            dbus_interface=server_interface,
 
516
                            byte_arrays=True))
 
517
        (self.mandos_serv
 
518
         .connect_to_signal("ClientAdded",
 
519
                            self.add_new_client,
 
520
                            dbus_interface=server_interface,
 
521
                            byte_arrays=True))
 
522
        (self.mandos_serv
 
523
         .connect_to_signal("ClientNotFound",
 
524
                            self.client_not_found,
 
525
                            dbus_interface=server_interface,
 
526
                            byte_arrays=True))
 
527
        for path, client in mandos_clients.iteritems():
 
528
            client_proxy_object = self.bus.get_object(self.busname,
 
529
                                                      path)
 
530
            self.add_client(MandosClientWidget(server_proxy_object
 
531
                                               =self.mandos_serv,
 
532
                                               proxy_object
 
533
                                               =client_proxy_object,
 
534
                                               properties=client,
 
535
                                               update_hook
 
536
                                               =self.refresh,
 
537
                                               delete_hook
 
538
                                               =self.remove_client,
 
539
                                               logger
 
540
                                               =self.log_message),
 
541
                            path=path)
469
542
    
470
543
    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))
 
544
        self.log_message(("Client with address %s and fingerprint %s"
 
545
                          " could not be found" % (address,
 
546
                                                    fingerprint)))
474
547
    
475
548
    def rebuild(self):
476
549
        """This rebuilds the User Interface.
486
559
                                                     self.divider)))
487
560
        if self.log_visible:
488
561
            self.uilist.append(self.logbox)
 
562
            pass
489
563
        self.topwidget = urwid.Pile(self.uilist)
490
564
    
491
565
    def log_message(self, message):
529
603
            client = self.clients_dict[path]
530
604
        except KeyError:
531
605
            # not found?
532
 
            self.log_message("Unknown client {0!r} ({1!r}) removed"
533
 
                             .format(name, path))
 
606
            self.log_message("Unknown client %r (%r) removed", name,
 
607
                             path)
534
608
            return
535
609
        client.delete()
536
610
    
575
649
    
576
650
    def run(self):
577
651
        """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
652
        self.refresh()
622
653
        self._input_callback_tag = (gobject.io_add_watch
623
654
                                    (sys.stdin.fileno(),