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  • Committer: Björn Påhlsson
  • Date: 2011-11-09 11:16:17 UTC
  • mto: (237.14.5 persistent-state-gpgme)
  • mto: This revision was merged to the branch mainline in revision 290.
  • Revision ID: belorn@fukt.bsnet.se-20111109111617-jpey2sy4dupqzabc
Persistent state: New feature. Client state is now stored when mandos
                  server exits, and restored when starting up. Secrets
                  are encrypted with key based on clients config file.
--no-restore: New argument to mandos server. Disables restore
              functionallity
minor changes: clients are now dicts!

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mandos-monitor
1
 
#!/usr/bin/python3 -bbI
 
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
#
 
3
# 
4
4
# Mandos Monitor - Control and monitor the Mandos server
5
 
#
6
 
# Copyright © 2009-2019 Teddy Hogeborn
7
 
# Copyright © 2009-2019 Björn Påhlsson
8
 
#
9
 
# This file is part of Mandos.
10
 
#
11
 
# Mandos is free software: you can redistribute it and/or modify it
12
 
# under the terms of the GNU General Public License as published by
 
5
# 
 
6
# Copyright © 2009-2011 Teddy Hogeborn
 
7
# Copyright © 2009-2011 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
13
11
# the Free Software Foundation, either version 3 of the License, or
14
12
# (at your option) any later version.
15
13
#
16
 
#     Mandos is distributed in the hope that it will be useful, but
17
 
#     WITHOUT ANY WARRANTY; without even the implied warranty of
 
14
#     This program is distributed in the hope that it will be useful,
 
15
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
18
16
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19
17
#     GNU General Public License for more details.
20
 
#
 
18
# 
21
19
# You should have received a copy of the GNU General Public License
22
 
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
23
 
#
 
20
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
21
# 
24
22
# Contact the authors at <mandos@recompile.se>.
25
 
#
 
23
# 
 
24
 
26
25
from __future__ import (division, absolute_import, print_function,
27
26
                        unicode_literals)
28
27
 
29
 
try:
30
 
    from future_builtins import *
31
 
except ImportError:
32
 
    pass
33
 
 
34
28
import sys
35
 
import logging
36
29
import os
37
 
import warnings
 
30
import signal
 
31
 
38
32
import datetime
39
 
import locale
40
33
 
41
34
import urwid.curses_display
42
35
import urwid
43
36
 
44
37
from dbus.mainloop.glib import DBusGMainLoop
45
 
from gi.repository import GLib
 
38
import gobject
46
39
 
47
40
import dbus
48
41
 
49
 
if sys.version_info.major == 2:
50
 
    __metaclass__ = type
51
 
    str = unicode
52
 
    input = raw_input
53
 
 
54
 
# Show warnings by default
55
 
if not sys.warnoptions:
56
 
    warnings.simplefilter("default")
57
 
 
58
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
59
 
logging.basicConfig(level="NOTSET", # Show all messages
60
 
                    format="%(message)s") # Show basic log messages
61
 
 
62
 
logging.captureWarnings(True)   # Show warnings via the logging system
63
 
 
64
 
locale.setlocale(locale.LC_ALL, "")
65
 
 
66
 
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
 
42
import UserList
 
43
 
 
44
import locale
 
45
 
 
46
locale.setlocale(locale.LC_ALL, '')
 
47
 
 
48
import logging
 
49
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
67
50
 
68
51
# Some useful constants
69
 
domain = "se.recompile"
70
 
server_interface = domain + ".Mandos"
71
 
client_interface = domain + ".Mandos.Client"
72
 
version = "1.8.16"
73
 
 
74
 
try:
75
 
    dbus.OBJECT_MANAGER_IFACE
76
 
except AttributeError:
77
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
78
 
 
 
52
domain = 'se.recompile'
 
53
server_interface = domain + '.Mandos'
 
54
client_interface = domain + '.Mandos.Client'
 
55
version = "1.4.1"
 
56
 
 
57
# Always run in monochrome mode
 
58
urwid.curses_display.curses.has_colors = lambda : False
 
59
 
 
60
# Urwid doesn't support blinking, but we want it.  Since we have no
 
61
# use for underline on its own, we make underline also always blink.
 
62
urwid.curses_display.curses.A_UNDERLINE |= (
 
63
    urwid.curses_display.curses.A_BLINK)
79
64
 
80
65
def isoformat_to_datetime(iso):
81
66
    "Parse an ISO 8601 date string to a datetime.datetime()"
90
75
                             int(day),
91
76
                             int(hour),
92
77
                             int(minute),
93
 
                             int(second),            # Whole seconds
94
 
                             int(fraction*1000000))  # Microseconds
95
 
 
96
 
 
97
 
class MandosClientPropertyCache:
 
78
                             int(second),           # Whole seconds
 
79
                             int(fraction*1000000)) # Microseconds
 
80
 
 
81
class MandosClientPropertyCache(object):
98
82
    """This wraps a Mandos Client D-Bus proxy object, caches the
99
83
    properties and calls a hook function when any of them are
100
84
    changed.
101
85
    """
102
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
103
 
        self.proxy = proxy_object  # Mandos Client proxy object
104
 
        self.properties = dict() if properties is None else properties
 
86
    def __init__(self, proxy_object=None, *args, **kwargs):
 
87
        self.proxy = proxy_object # Mandos Client proxy object
 
88
        
 
89
        self.properties = dict()
105
90
        self.property_changed_match = (
106
 
            self.proxy.connect_to_signal("PropertiesChanged",
107
 
                                         self.properties_changed,
108
 
                                         dbus.PROPERTIES_IFACE,
 
91
            self.proxy.connect_to_signal("PropertyChanged",
 
92
                                         self.property_changed,
 
93
                                         client_interface,
109
94
                                         byte_arrays=True))
110
 
 
111
 
        if properties is None:
112
 
            self.properties.update(self.proxy.GetAll(
113
 
                client_interface,
114
 
                dbus_interface=dbus.PROPERTIES_IFACE))
115
 
 
116
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
117
 
 
118
 
    def properties_changed(self, interface, properties, invalidated):
119
 
        """This is called whenever we get a PropertiesChanged signal
120
 
        It updates the changed properties in the "properties" dict.
 
95
        
 
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)
 
103
    
 
104
    def property_changed(self, property=None, value=None):
 
105
        """This is called whenever we get a PropertyChanged signal
 
106
        It updates the changed property in the "properties" dict.
121
107
        """
122
108
        # Update properties dict with new value
123
 
        if interface == client_interface:
124
 
            self.properties.update(properties)
125
 
 
126
 
    def delete(self):
 
109
        self.properties[property] = value
 
110
    
 
111
    def delete(self, *args, **kwargs):
127
112
        self.property_changed_match.remove()
 
113
        super(MandosClientPropertyCache, self).__init__(
 
114
            *args, **kwargs)
128
115
 
129
116
 
130
117
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
131
118
    """A Mandos Client which is visible on the screen.
132
119
    """
133
 
 
 
120
    
134
121
    def __init__(self, server_proxy_object=None, update_hook=None,
135
 
                 delete_hook=None, **kwargs):
 
122
                 delete_hook=None, logger=None, *args, **kwargs):
136
123
        # Called on update
137
124
        self.update_hook = update_hook
138
125
        # Called on delete
139
126
        self.delete_hook = delete_hook
140
127
        # Mandos Server proxy object
141
128
        self.server_proxy_object = server_proxy_object
142
 
 
 
129
        # Logger
 
130
        self.logger = logger
 
131
        
143
132
        self._update_timer_callback_tag = None
144
 
 
 
133
        self._update_timer_callback_lock = 0
 
134
        self.last_checker_failed = False
 
135
        
145
136
        # The widget shown normally
146
137
        self._text_widget = urwid.Text("")
147
138
        # The widget shown when we have focus
148
139
        self._focus_text_widget = urwid.Text("")
149
 
        super(MandosClientWidget, self).__init__(**kwargs)
 
140
        super(MandosClientWidget, self).__init__(
 
141
            update_hook=update_hook, delete_hook=delete_hook,
 
142
            *args, **kwargs)
150
143
        self.update()
151
144
        self.opened = False
152
 
 
 
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
        
153
164
        self.match_objects = (
154
165
            self.proxy.connect_to_signal("CheckerCompleted",
155
166
                                         self.checker_completed,
171
182
                                         self.rejected,
172
183
                                         client_interface,
173
184
                                         byte_arrays=True))
174
 
        log.debug("Created client %s", self.properties["Name"])
175
 
 
 
185
        #self.logger('Created client %s' % (self.properties["Name"]))
 
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
        
176
193
    def using_timer(self, flag):
177
194
        """Call this method with True or False when timer should be
178
195
        activated or deactivated.
179
196
        """
180
 
        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:
181
203
            # Will update the shown timer value every second
182
 
            self._update_timer_callback_tag = (
183
 
                GLib.timeout_add(1000,
184
 
                                 glib_safely(self.update_timer)))
185
 
        elif not (flag or self._update_timer_callback_tag is None):
186
 
            GLib.source_remove(self._update_timer_callback_tag)
 
204
            self._update_timer_callback_tag = (gobject.timeout_add
 
205
                                               (1000,
 
206
                                                self.update_timer))
 
207
        elif old and self._update_timer_callback_lock == 0:
 
208
            gobject.source_remove(self._update_timer_callback_tag)
187
209
            self._update_timer_callback_tag = None
188
 
 
 
210
    
189
211
    def checker_completed(self, exitstatus, condition, command):
190
212
        if exitstatus == 0:
191
 
            log.debug('Checker for client %s (command "%s")'
192
 
                      " succeeded", self.properties["Name"], command)
 
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))
193
219
            self.update()
194
220
            return
195
221
        # Checker failed
 
222
        if not self.last_checker_failed:
 
223
            self.last_checker_failed = True
 
224
            self.using_timer(True)
196
225
        if os.WIFEXITED(condition):
197
 
            log.info('Checker for client %s (command "%s") failed'
198
 
                     " with exit code %d", self.properties["Name"],
199
 
                     command, 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)))
200
230
        elif os.WIFSIGNALED(condition):
201
 
            log.info('Checker for client %s (command "%s") was'
202
 
                     " killed by signal %d", self.properties["Name"],
203
 
                     command, 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)))
 
235
        elif os.WCOREDUMP(condition):
 
236
            self.logger('Checker for client %s (command "%s")'
 
237
                        ' dumped core'
 
238
                        % (self.properties["Name"], command))
 
239
        else:
 
240
            self.logger('Checker for client %s completed'
 
241
                        ' mysteriously')
204
242
        self.update()
205
 
 
 
243
    
206
244
    def checker_started(self, command):
207
 
        """Server signals that a checker started."""
208
 
        log.debug('Client %s started checker "%s"',
209
 
                  self.properties["Name"], command)
210
 
 
 
245
        #self.logger('Client %s started checker "%s"'
 
246
        #            % (self.properties["Name"], unicode(command)))
 
247
        pass
 
248
    
211
249
    def got_secret(self):
212
 
        log.info("Client %s received its secret",
213
 
                 self.properties["Name"])
214
 
 
 
250
        self.last_checker_failed = False
 
251
        self.logger('Client %s received its secret'
 
252
                    % self.properties["Name"])
 
253
    
215
254
    def need_approval(self, timeout, default):
216
255
        if not default:
217
 
            message = "Client %s needs approval within %f seconds"
 
256
            message = 'Client %s needs approval within %s seconds'
218
257
        else:
219
 
            message = "Client %s will get its secret in %f seconds"
220
 
        log.info(message, self.properties["Name"], timeout/1000)
221
 
 
 
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)
 
262
    
222
263
    def rejected(self, reason):
223
 
        log.info("Client %s was rejected; reason: %s",
224
 
                 self.properties["Name"], reason)
225
 
 
 
264
        self.logger('Client %s was rejected; reason: %s'
 
265
                    % (self.properties["Name"], reason))
 
266
    
226
267
    def selectable(self):
227
268
        """Make this a "selectable" widget.
228
269
        This overrides the method from urwid.FlowWidget."""
229
270
        return True
230
 
 
 
271
    
231
272
    def rows(self, maxcolrow, focus=False):
232
273
        """How many rows this widget will occupy might depend on
233
274
        whether we have focus or not.
234
275
        This overrides the method from urwid.FlowWidget"""
235
276
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
236
 
 
 
277
    
237
278
    def current_widget(self, focus=False):
238
279
        if focus or self.opened:
239
280
            return self._focus_widget
240
281
        return self._widget
241
 
 
 
282
    
242
283
    def update(self):
243
284
        "Called when what is visible on the screen should be updated."
244
285
        # How to add standout mode to a style
245
 
        with_standout = {"normal": "standout",
246
 
                         "bold": "bold-standout",
247
 
                         "underline-blink":
248
 
                         "underline-blink-standout",
249
 
                         "bold-underline-blink":
250
 
                         "bold-underline-blink-standout",
251
 
                         }
 
286
        with_standout = { "normal": "standout",
 
287
                          "bold": "bold-standout",
 
288
                          "underline-blink":
 
289
                              "underline-blink-standout",
 
290
                          "bold-underline-blink":
 
291
                              "bold-underline-blink-standout",
 
292
                          }
252
293
 
253
294
        # Rebuild focus and non-focus widgets using current properties
254
295
 
255
296
        # Base part of a client. Name!
256
 
        base = "{name}: ".format(name=self.properties["Name"])
 
297
        base = ('%(name)s: '
 
298
                      % {"name": self.properties["Name"]})
257
299
        if not self.properties["Enabled"]:
258
300
            message = "DISABLED"
259
 
            self.using_timer(False)
260
301
        elif self.properties["ApprovalPending"]:
261
 
            timeout = datetime.timedelta(
262
 
                milliseconds=self.properties["ApprovalDelay"])
 
302
            timeout = datetime.timedelta(milliseconds
 
303
                                         = self.properties
 
304
                                         ["ApprovalDelay"])
263
305
            last_approval_request = isoformat_to_datetime(
264
306
                self.properties["LastApprovalRequest"])
265
307
            if last_approval_request is not None:
266
 
                timer = max(timeout - (datetime.datetime.utcnow()
267
 
                                       - last_approval_request),
268
 
                            datetime.timedelta())
 
308
                timer = timeout - (datetime.datetime.utcnow()
 
309
                                   - last_approval_request)
269
310
            else:
270
311
                timer = datetime.timedelta()
271
312
            if self.properties["ApprovedByDefault"]:
272
 
                message = "Approval in {}. (d)eny?"
 
313
                message = "Approval in %s. (d)eny?"
273
314
            else:
274
 
                message = "Denial in {}. (a)pprove?"
275
 
            message = message.format(str(timer).rsplit(".", 1)[0])
276
 
            self.using_timer(True)
277
 
        elif self.properties["LastCheckerStatus"] != 0:
278
 
            # 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
279
319
            expires = self.properties["Expires"]
280
320
            if expires == "":
281
321
                timer = datetime.timedelta(0)
282
322
            else:
283
 
                expires = (datetime.datetime.strptime
284
 
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
285
 
                timer = max(expires - datetime.datetime.utcnow(),
286
 
                            datetime.timedelta())
287
 
            message = ("A checker has failed! Time until client"
288
 
                       " gets disabled: {}"
289
 
                       .format(str(timer).rsplit(".", 1)[0]))
290
 
            self.using_timer(True)
 
323
                expires = datetime.datetime.strptime(expires,
 
324
                                                     '%Y-%m-%dT%H:%M:%S.%f')
 
325
                timer = expires - datetime.datetime.utcnow()
 
326
            message = ('A checker has failed! Time until client'
 
327
                       ' gets disabled: %s'
 
328
                           % unicode(timer).rsplit(".", 1)[0])
291
329
        else:
292
330
            message = "enabled"
293
 
            self.using_timer(False)
294
 
        self._text = "{}{}".format(base, message)
295
 
 
 
331
        self._text = "%s%s" % (base, message)
 
332
            
296
333
        if not urwid.supports_unicode():
297
334
            self._text = self._text.encode("ascii", "replace")
298
335
        textlist = [("normal", self._text)]
308
345
        # Run update hook, if any
309
346
        if self.update_hook is not None:
310
347
            self.update_hook()
311
 
 
 
348
    
312
349
    def update_timer(self):
313
 
        """called by GLib. Will indefinitely loop until
314
 
        GLib.source_remove() on tag is called
315
 
        """
 
350
        """called by gobject. Will indefinitely loop until
 
351
        gobject.source_remove() on tag is called"""
316
352
        self.update()
317
353
        return True             # Keep calling this
318
 
 
319
 
    def delete(self, **kwargs):
 
354
    
 
355
    def delete(self, *args, **kwargs):
320
356
        if self._update_timer_callback_tag is not None:
321
 
            GLib.source_remove(self._update_timer_callback_tag)
 
357
            gobject.source_remove(self._update_timer_callback_tag)
322
358
            self._update_timer_callback_tag = None
323
359
        for match in self.match_objects:
324
360
            match.remove()
325
361
        self.match_objects = ()
326
362
        if self.delete_hook is not None:
327
363
            self.delete_hook(self)
328
 
        return super(MandosClientWidget, self).delete(**kwargs)
329
 
 
 
364
        return super(MandosClientWidget, self).delete(*args, **kwargs)
 
365
    
330
366
    def render(self, maxcolrow, focus=False):
331
367
        """Render differently if we have focus.
332
368
        This overrides the method from urwid.FlowWidget"""
333
369
        return self.current_widget(focus).render(maxcolrow,
334
370
                                                 focus=focus)
335
 
 
 
371
    
336
372
    def keypress(self, maxcolrow, key):
337
373
        """Handle keys.
338
374
        This overrides the method from urwid.FlowWidget"""
339
375
        if key == "+":
340
 
            self.proxy.Set(client_interface, "Enabled",
341
 
                           dbus.Boolean(True), ignore_reply=True,
342
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
376
            self.proxy.Enable(dbus_interface = client_interface,
 
377
                              ignore_reply=True)
343
378
        elif key == "-":
344
 
            self.proxy.Set(client_interface, "Enabled", False,
345
 
                           ignore_reply=True,
346
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
379
            self.proxy.Disable(dbus_interface = client_interface,
 
380
                               ignore_reply=True)
347
381
        elif key == "a":
348
382
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
349
 
                               dbus_interface=client_interface,
 
383
                               dbus_interface = client_interface,
350
384
                               ignore_reply=True)
351
385
        elif key == "d":
352
386
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
353
 
                               dbus_interface=client_interface,
 
387
                                  dbus_interface = client_interface,
354
388
                               ignore_reply=True)
355
389
        elif key == "R" or key == "_" or key == "ctrl k":
356
390
            self.server_proxy_object.RemoveClient(self.proxy
357
391
                                                  .object_path,
358
392
                                                  ignore_reply=True)
359
393
        elif key == "s":
360
 
            self.proxy.Set(client_interface, "CheckerRunning",
361
 
                           dbus.Boolean(True), ignore_reply=True,
362
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
394
            self.proxy.StartChecker(dbus_interface = client_interface,
 
395
                                    ignore_reply=True)
363
396
        elif key == "S":
364
 
            self.proxy.Set(client_interface, "CheckerRunning",
365
 
                           dbus.Boolean(False), ignore_reply=True,
366
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
397
            self.proxy.StopChecker(dbus_interface = client_interface,
 
398
                                   ignore_reply=True)
367
399
        elif key == "C":
368
 
            self.proxy.CheckedOK(dbus_interface=client_interface,
 
400
            self.proxy.CheckedOK(dbus_interface = client_interface,
369
401
                                 ignore_reply=True)
370
402
        # xxx
371
403
#         elif key == "p" or key == "=":
376
408
#             self.open()
377
409
        else:
378
410
            return key
379
 
 
380
 
    def properties_changed(self, interface, properties, invalidated):
381
 
        """Call self.update() if any properties changed.
 
411
    
 
412
    def property_changed(self, property=None, value=None,
 
413
                         *args, **kwargs):
 
414
        """Call self.update() if old value is not new value.
382
415
        This overrides the method from MandosClientPropertyCache"""
383
 
        old_values = {key: self.properties.get(key)
384
 
                      for key in properties.keys()}
385
 
        super(MandosClientWidget, self).properties_changed(
386
 
            interface, properties, invalidated)
387
 
        if any(old_values[key] != self.properties.get(key)
388
 
               for key in old_values):
 
416
        property_name = unicode(property)
 
417
        old_value = self.properties.get(property_name)
 
418
        super(MandosClientWidget, self).property_changed(
 
419
            property=property, value=value, *args, **kwargs)
 
420
        if self.properties.get(property_name) != old_value:
389
421
            self.update()
390
422
 
391
423
 
392
 
def glib_safely(func, retval=True):
393
 
    def safe_func(*args, **kwargs):
394
 
        try:
395
 
            return func(*args, **kwargs)
396
 
        except Exception:
397
 
            log.exception("")
398
 
            return retval
399
 
    return safe_func
400
 
 
401
 
 
402
424
class ConstrainedListBox(urwid.ListBox):
403
425
    """Like a normal urwid.ListBox, but will consume all "up" or
404
426
    "down" key presses, thus not allowing any containing widgets to
405
427
    use them as an excuse to shift focus away from this widget.
406
428
    """
407
 
    def keypress(self, *args, **kwargs):
408
 
        ret = (super(ConstrainedListBox, self)
409
 
               .keypress(*args, **kwargs))
 
429
    def keypress(self, maxcolrow, key):
 
430
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
410
431
        if ret in ("up", "down"):
411
432
            return
412
433
        return ret
413
434
 
414
435
 
415
 
class UserInterface:
 
436
class UserInterface(object):
416
437
    """This is the entire user interface - the whole screen
417
438
    with boxes, lists of client widgets, etc.
418
439
    """
419
440
    def __init__(self, max_log_length=1000):
420
441
        DBusGMainLoop(set_as_default=True)
421
 
 
 
442
        
422
443
        self.screen = urwid.curses_display.Screen()
423
 
 
 
444
        
424
445
        self.screen.register_palette((
425
446
                ("normal",
426
447
                 "default", "default", None),
427
448
                ("bold",
428
 
                 "bold", "default", "bold"),
 
449
                 "default", "default", "bold"),
429
450
                ("underline-blink",
430
 
                 "underline,blink", "default", "underline,blink"),
 
451
                 "default", "default", "underline"),
431
452
                ("standout",
432
 
                 "standout", "default", "standout"),
 
453
                 "default", "default", "standout"),
433
454
                ("bold-underline-blink",
434
 
                 "bold,underline,blink", "default",
435
 
                 "bold,underline,blink"),
 
455
                 "default", "default", ("bold", "underline")),
436
456
                ("bold-standout",
437
 
                 "bold,standout", "default", "bold,standout"),
 
457
                 "default", "default", ("bold", "standout")),
438
458
                ("underline-blink-standout",
439
 
                 "underline,blink,standout", "default",
440
 
                 "underline,blink,standout"),
 
459
                 "default", "default", ("underline", "standout")),
441
460
                ("bold-underline-blink-standout",
442
 
                 "bold,underline,blink,standout", "default",
443
 
                 "bold,underline,blink,standout"),
 
461
                 "default", "default", ("bold", "underline",
 
462
                                          "standout")),
444
463
                ))
445
 
 
 
464
        
446
465
        if urwid.supports_unicode():
447
 
            self.divider = "─"  # \u2500
 
466
            self.divider = "─" # \u2500
 
467
            #self.divider = "━" # \u2501
448
468
        else:
449
 
            self.divider = "_"  # \u005f
450
 
 
 
469
            #self.divider = "-" # \u002d
 
470
            self.divider = "_" # \u005f
 
471
        
451
472
        self.screen.start()
452
 
 
 
473
        
453
474
        self.size = self.screen.get_cols_rows()
454
 
 
 
475
        
455
476
        self.clients = urwid.SimpleListWalker([])
456
477
        self.clients_dict = {}
457
 
 
 
478
        
458
479
        # We will add Text widgets to this list
459
 
        self.log = urwid.SimpleListWalker([])
 
480
        self.log = []
460
481
        self.max_log_length = max_log_length
461
 
 
 
482
        
462
483
        # We keep a reference to the log widget so we can remove it
463
484
        # from the ListWalker without it getting destroyed
464
485
        self.logbox = ConstrainedListBox(self.log)
465
 
 
 
486
        
466
487
        # This keeps track of whether self.uilist currently has
467
488
        # self.logbox in it or not
468
489
        self.log_visible = True
469
490
        self.log_wrap = "any"
470
 
 
471
 
        self.loghandler = UILogHandler(self)
472
 
 
 
491
        
473
492
        self.rebuild()
474
 
        self.add_log_line(("bold",
475
 
                           "Mandos Monitor version " + version))
476
 
        self.add_log_line(("bold", "q: Quit  ?: Help"))
477
 
 
478
 
        self.busname = domain + ".Mandos"
479
 
        self.main_loop = GLib.MainLoop()
480
 
 
481
 
    def client_not_found(self, key_id, address):
482
 
        log.info("Client with address %s and key ID %s could"
483
 
                 " not be found", address, key_id)
484
 
 
 
493
        self.log_message_raw(("bold",
 
494
                              "Mandos Monitor version " + version))
 
495
        self.log_message_raw(("bold",
 
496
                              "q: Quit  ?: Help"))
 
497
        
 
498
        self.busname = domain + '.Mandos'
 
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)
 
542
    
 
543
    def client_not_found(self, fingerprint, address):
 
544
        self.log_message(("Client with address %s and fingerprint %s"
 
545
                          " could not be found" % (address,
 
546
                                                    fingerprint)))
 
547
    
485
548
    def rebuild(self):
486
549
        """This rebuilds the User Interface.
487
550
        Call this when the widget layout needs to change"""
488
551
        self.uilist = []
489
 
        # self.uilist.append(urwid.ListBox(self.clients))
 
552
        #self.uilist.append(urwid.ListBox(self.clients))
490
553
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
491
554
                                                          clients),
492
 
                                       # header=urwid.Divider(),
 
555
                                       #header=urwid.Divider(),
493
556
                                       header=None,
494
 
                                       footer=urwid.Divider(
495
 
                                           div_char=self.divider)))
 
557
                                       footer=
 
558
                                       urwid.Divider(div_char=
 
559
                                                     self.divider)))
496
560
        if self.log_visible:
497
561
            self.uilist.append(self.logbox)
 
562
            pass
498
563
        self.topwidget = urwid.Pile(self.uilist)
499
 
 
500
 
    def add_log_line(self, markup):
 
564
    
 
565
    def log_message(self, message):
 
566
        timestamp = datetime.datetime.now().isoformat()
 
567
        self.log_message_raw(timestamp + ": " + message)
 
568
    
 
569
    def log_message_raw(self, markup):
 
570
        """Add a log message to the log buffer."""
501
571
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
502
 
        if self.max_log_length:
503
 
            if len(self.log) > self.max_log_length:
504
 
                del self.log[0:(len(self.log) - self.max_log_length)]
505
 
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
 
572
        if (self.max_log_length
 
573
            and len(self.log) > self.max_log_length):
 
574
            del self.log[0:len(self.log)-self.max_log_length-1]
 
575
        self.logbox.set_focus(len(self.logbox.body.contents),
506
576
                              coming_from="above")
507
577
        self.refresh()
508
 
 
 
578
    
509
579
    def toggle_log_display(self):
510
580
        """Toggle visibility of the log buffer."""
511
581
        self.log_visible = not self.log_visible
512
582
        self.rebuild()
513
 
        log.debug("Log visibility changed to: %s", self.log_visible)
514
 
 
 
583
        #self.log_message("Log visibility changed to: "
 
584
        #                 + unicode(self.log_visible))
 
585
    
515
586
    def change_log_display(self):
516
587
        """Change type of log display.
517
588
        Currently, this toggles wrapping of text lines."""
521
592
            self.log_wrap = "clip"
522
593
        for textwidget in self.log:
523
594
            textwidget.set_wrap_mode(self.log_wrap)
524
 
        log.debug("Wrap mode: %s", self.log_wrap)
525
 
 
526
 
    def find_and_remove_client(self, path, interfaces):
 
595
        #self.log_message("Wrap mode: " + self.log_wrap)
 
596
    
 
597
    def find_and_remove_client(self, path, name):
527
598
        """Find a client by its object path and remove it.
528
 
 
529
 
        This is connected to the InterfacesRemoved signal from the
 
599
        
 
600
        This is connected to the ClientRemoved signal from the
530
601
        Mandos server object."""
531
 
        if client_interface not in interfaces:
532
 
            # Not a Mandos client object; ignore
533
 
            return
534
602
        try:
535
603
            client = self.clients_dict[path]
536
604
        except KeyError:
537
605
            # not found?
538
 
            log.warning("Unknown client %s removed", path)
 
606
            self.log_message("Unknown client %r (%r) removed", name,
 
607
                             path)
539
608
            return
540
609
        client.delete()
541
 
 
542
 
    def add_new_client(self, path, ifs_and_props):
543
 
        """Find a client by its object path and remove it.
544
 
 
545
 
        This is connected to the InterfacesAdded signal from the
546
 
        Mandos server object.
547
 
        """
548
 
        if client_interface not in ifs_and_props:
549
 
            # Not a Mandos client object; ignore
550
 
            return
 
610
    
 
611
    def add_new_client(self, path):
551
612
        client_proxy_object = self.bus.get_object(self.busname, path)
552
 
        self.add_client(MandosClientWidget(
553
 
            server_proxy_object=self.mandos_serv,
554
 
            proxy_object=client_proxy_object,
555
 
            update_hook=self.refresh,
556
 
            delete_hook=self.remove_client,
557
 
            properties=dict(ifs_and_props[client_interface])),
 
613
        self.add_client(MandosClientWidget(server_proxy_object
 
614
                                           =self.mandos_serv,
 
615
                                           proxy_object
 
616
                                           =client_proxy_object,
 
617
                                           update_hook
 
618
                                           =self.refresh,
 
619
                                           delete_hook
 
620
                                           =self.remove_client,
 
621
                                           logger
 
622
                                           =self.log_message),
558
623
                        path=path)
559
 
 
 
624
    
560
625
    def add_client(self, client, path=None):
561
626
        self.clients.append(client)
562
627
        if path is None:
563
628
            path = client.proxy.object_path
564
629
        self.clients_dict[path] = client
565
 
        self.clients.sort(key=lambda c: c.properties["Name"])
 
630
        self.clients.sort(None, lambda c: c.properties["Name"])
566
631
        self.refresh()
567
 
 
 
632
    
568
633
    def remove_client(self, client, path=None):
569
634
        self.clients.remove(client)
570
635
        if path is None:
571
636
            path = client.proxy.object_path
572
637
        del self.clients_dict[path]
 
638
        if not self.clients_dict:
 
639
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
640
            # is completely emptied, we need to recreate it.
 
641
            self.clients = urwid.SimpleListWalker([])
 
642
            self.rebuild()
573
643
        self.refresh()
574
 
 
 
644
    
575
645
    def refresh(self):
576
646
        """Redraw the screen"""
577
647
        canvas = self.topwidget.render(self.size, focus=True)
578
648
        self.screen.draw_screen(self.size, canvas)
579
 
 
 
649
    
580
650
    def run(self):
581
651
        """Start the main loop and exit when it's done."""
582
 
        log.addHandler(self.loghandler)
583
 
        self.orig_log_propagate = log.propagate
584
 
        log.propagate = False
585
 
        self.orig_log_level = log.level
586
 
        log.setLevel("INFO")
587
 
        self.bus = dbus.SystemBus()
588
 
        mandos_dbus_objc = self.bus.get_object(
589
 
            self.busname, "/", follow_name_owner_changes=True)
590
 
        self.mandos_serv = dbus.Interface(
591
 
            mandos_dbus_objc, dbus_interface=server_interface)
592
 
        try:
593
 
            mandos_clients = (self.mandos_serv
594
 
                              .GetAllClientsWithProperties())
595
 
            if not mandos_clients:
596
 
                log.warning("Note: Server has no clients.")
597
 
        except dbus.exceptions.DBusException:
598
 
            log.warning("Note: No Mandos server running.")
599
 
            mandos_clients = dbus.Dictionary()
600
 
 
601
 
        (self.mandos_serv
602
 
         .connect_to_signal("InterfacesRemoved",
603
 
                            self.find_and_remove_client,
604
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
605
 
                            byte_arrays=True))
606
 
        (self.mandos_serv
607
 
         .connect_to_signal("InterfacesAdded",
608
 
                            self.add_new_client,
609
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
610
 
                            byte_arrays=True))
611
 
        (self.mandos_serv
612
 
         .connect_to_signal("ClientNotFound",
613
 
                            self.client_not_found,
614
 
                            dbus_interface=server_interface,
615
 
                            byte_arrays=True))
616
 
        for path, client in mandos_clients.items():
617
 
            client_proxy_object = self.bus.get_object(self.busname,
618
 
                                                      path)
619
 
            self.add_client(MandosClientWidget(
620
 
                server_proxy_object=self.mandos_serv,
621
 
                proxy_object=client_proxy_object,
622
 
                properties=client,
623
 
                update_hook=self.refresh,
624
 
                delete_hook=self.remove_client),
625
 
                            path=path)
626
 
 
627
652
        self.refresh()
628
 
        self._input_callback_tag = (
629
 
            GLib.io_add_watch(
630
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
631
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
632
 
                glib_safely(self.process_input)))
 
653
        self._input_callback_tag = (gobject.io_add_watch
 
654
                                    (sys.stdin.fileno(),
 
655
                                     gobject.IO_IN,
 
656
                                     self.process_input))
633
657
        self.main_loop.run()
634
658
        # Main loop has finished, we should close everything now
635
 
        GLib.source_remove(self._input_callback_tag)
636
 
        with warnings.catch_warnings():
637
 
            warnings.simplefilter("ignore", BytesWarning)
638
 
            self.screen.stop()
639
 
 
 
659
        gobject.source_remove(self._input_callback_tag)
 
660
        self.screen.stop()
 
661
    
640
662
    def stop(self):
641
663
        self.main_loop.quit()
642
 
        log.removeHandler(self.loghandler)
643
 
        log.propagate = self.orig_log_propagate
644
 
 
 
664
    
645
665
    def process_input(self, source, condition):
646
666
        keys = self.screen.get_input()
647
 
        translations = {"ctrl n": "down",       # Emacs
648
 
                        "ctrl p": "up",         # Emacs
649
 
                        "ctrl v": "page down",  # Emacs
650
 
                        "meta v": "page up",    # Emacs
651
 
                        " ": "page down",       # less
652
 
                        "f": "page down",       # less
653
 
                        "b": "page up",         # less
654
 
                        "j": "down",            # vi
655
 
                        "k": "up",              # vi
656
 
                        }
 
667
        translations = { "ctrl n": "down",      # Emacs
 
668
                         "ctrl p": "up",        # Emacs
 
669
                         "ctrl v": "page down", # Emacs
 
670
                         "meta v": "page up",   # Emacs
 
671
                         " ": "page down",      # less
 
672
                         "f": "page down",      # less
 
673
                         "b": "page up",        # less
 
674
                         "j": "down",           # vi
 
675
                         "k": "up",             # vi
 
676
                         }
657
677
        for key in keys:
658
678
            try:
659
679
                key = translations[key]
660
680
            except KeyError:    # :-)
661
681
                pass
662
 
 
 
682
            
663
683
            if key == "q" or key == "Q":
664
684
                self.stop()
665
685
                break
666
686
            elif key == "window resize":
667
687
                self.size = self.screen.get_cols_rows()
668
688
                self.refresh()
669
 
            elif key == "ctrl l":
670
 
                self.screen.clear()
 
689
            elif key == "\f":  # Ctrl-L
671
690
                self.refresh()
672
691
            elif key == "l" or key == "D":
673
692
                self.toggle_log_display()
679
698
                if not self.log_visible:
680
699
                    self.log_visible = True
681
700
                    self.rebuild()
682
 
                self.add_log_line(("bold",
683
 
                                   "  ".join(("q: Quit",
684
 
                                              "?: Help",
685
 
                                              "l: Log window toggle",
686
 
                                              "TAB: Switch window",
687
 
                                              "w: Wrap (log lines)",
688
 
                                              "v: Toggle verbose log",
689
 
                                   ))))
690
 
                self.add_log_line(("bold",
691
 
                                   "  ".join(("Clients:",
692
 
                                              "+: Enable",
693
 
                                              "-: Disable",
694
 
                                              "R: Remove",
695
 
                                              "s: Start new checker",
696
 
                                              "S: Stop checker",
697
 
                                              "C: Checker OK",
698
 
                                              "a: Approve",
699
 
                                              "d: Deny",
700
 
                                   ))))
 
701
                self.log_message_raw(("bold",
 
702
                                      "  ".
 
703
                                      join(("q: Quit",
 
704
                                            "?: Help",
 
705
                                            "l: Log window toggle",
 
706
                                            "TAB: Switch window",
 
707
                                            "w: Wrap (log)"))))
 
708
                self.log_message_raw(("bold",
 
709
                                      "  "
 
710
                                      .join(("Clients:",
 
711
                                             "+: Enable",
 
712
                                             "-: Disable",
 
713
                                             "R: Remove",
 
714
                                             "s: Start new checker",
 
715
                                             "S: Stop checker",
 
716
                                             "C: Checker OK",
 
717
                                             "a: Approve",
 
718
                                             "d: Deny"))))
701
719
                self.refresh()
702
720
            elif key == "tab":
703
721
                if self.topwidget.get_focus() is self.logbox:
705
723
                else:
706
724
                    self.topwidget.set_focus(self.logbox)
707
725
                self.refresh()
708
 
            elif key == "v":
709
 
                if log.level < logging.INFO:
710
 
                    log.setLevel(logging.INFO)
711
 
                    log.info("Verbose mode: Off")
712
 
                else:
713
 
                    log.setLevel(logging.NOTSET)
714
 
                    log.info("Verbose mode: On")
715
 
            # elif (key == "end" or key == "meta >" or key == "G"
716
 
            #       or key == ">"):
717
 
            #     pass            # xxx end-of-buffer
718
 
            # elif (key == "home" or key == "meta <" or key == "g"
719
 
            #       or key == "<"):
720
 
            #     pass            # xxx beginning-of-buffer
721
 
            # elif key == "ctrl e" or key == "$":
722
 
            #     pass            # xxx move-end-of-line
723
 
            # elif key == "ctrl a" or key == "^":
724
 
            #     pass            # xxx move-beginning-of-line
725
 
            # elif key == "ctrl b" or key == "meta (" or key == "h":
726
 
            #     pass            # xxx left
727
 
            # elif key == "ctrl f" or key == "meta )" or key == "l":
728
 
            #     pass            # xxx right
729
 
            # elif key == "a":
730
 
            #     pass            # scroll up log
731
 
            # elif key == "z":
732
 
            #     pass            # scroll down log
 
726
            #elif (key == "end" or key == "meta >" or key == "G"
 
727
            #      or key == ">"):
 
728
            #    pass            # xxx end-of-buffer
 
729
            #elif (key == "home" or key == "meta <" or key == "g"
 
730
            #      or key == "<"):
 
731
            #    pass            # xxx beginning-of-buffer
 
732
            #elif key == "ctrl e" or key == "$":
 
733
            #    pass            # xxx move-end-of-line
 
734
            #elif key == "ctrl a" or key == "^":
 
735
            #    pass            # xxx move-beginning-of-line
 
736
            #elif key == "ctrl b" or key == "meta (" or key == "h":
 
737
            #    pass            # xxx left
 
738
            #elif key == "ctrl f" or key == "meta )" or key == "l":
 
739
            #    pass            # xxx right
 
740
            #elif key == "a":
 
741
            #    pass            # scroll up log
 
742
            #elif key == "z":
 
743
            #    pass            # scroll down log
733
744
            elif self.topwidget.selectable():
734
745
                self.topwidget.keypress(self.size, key)
735
746
                self.refresh()
736
747
        return True
737
748
 
738
 
 
739
 
class UILogHandler(logging.Handler):
740
 
    def __init__(self, ui, *args, **kwargs):
741
 
        self.ui = ui
742
 
        super(UILogHandler, self).__init__(*args, **kwargs)
743
 
        self.setFormatter(
744
 
            logging.Formatter("%(asctime)s: %(message)s"))
745
 
    def emit(self, record):
746
 
        msg = self.format(record)
747
 
        if record.levelno > logging.INFO:
748
 
            msg = ("bold", msg)
749
 
        self.ui.add_log_line(msg)
750
 
 
751
 
 
752
749
ui = UserInterface()
753
750
try:
754
751
    ui.run()
755
752
except KeyboardInterrupt:
756
 
    with warnings.catch_warnings():
757
 
        warnings.filterwarnings("ignore", "", BytesWarning)
758
 
        ui.screen.stop()
759
 
except Exception:
760
 
    with warnings.catch_warnings():
761
 
        warnings.filterwarnings("ignore", "", BytesWarning)
762
 
        ui.screen.stop()
 
753
    ui.screen.stop()
 
754
except Exception, e:
 
755
    ui.log_message(unicode(e))
 
756
    ui.screen.stop()
763
757
    raise