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  • Committer: Teddy Hogeborn
  • Date: 2019-03-16 00:23:20 UTC
  • Revision ID: teddy@recompile.se-20190316002320-ajpmbdl4jup156en
mandos-ctl: Refactor

* mandos-ctl (get_mandos_dbus_object, get_managed_objects): Factor out
                                             D-Bus exception catching.
                       
  (if_dbus_exception_log_with_exception_and_exit): New.

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mandos-monitor
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#!/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 © 2009-2012 Teddy Hogeborn
7
 
# Copyright © 2009-2012 Björn Påhlsson
8
 
# 
9
 
# This program is free software: you can redistribute it and/or modify
10
 
# it under the terms of the GNU General Public License as published by
 
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
11
13
# the Free Software Foundation, either version 3 of the License, or
12
14
# (at your option) any later version.
13
15
#
14
 
#     This program is distributed in the hope that it will be useful,
15
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
16
#     Mandos is distributed in the hope that it will be useful, but
 
17
#     WITHOUT ANY WARRANTY; without even the implied warranty of
16
18
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
19
#     GNU General Public License for more details.
18
 
# 
 
20
#
19
21
# You should have received a copy of the GNU General Public License
20
 
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
21
 
# 
 
22
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
23
#
22
24
# Contact the authors at <mandos@recompile.se>.
23
 
# 
 
25
#
24
26
 
25
27
from __future__ import (division, absolute_import, print_function,
26
28
                        unicode_literals)
 
29
try:
 
30
    from future_builtins import *
 
31
except ImportError:
 
32
    pass
27
33
 
28
34
import sys
29
35
import os
30
 
import signal
31
36
 
32
37
import datetime
33
38
 
35
40
import urwid
36
41
 
37
42
from dbus.mainloop.glib import DBusGMainLoop
38
 
import gobject
 
43
from gi.repository import GLib
39
44
 
40
45
import dbus
41
46
 
42
 
import UserList
43
 
 
44
47
import locale
45
48
 
 
49
import logging
 
50
 
 
51
if sys.version_info.major == 2:
 
52
    str = unicode
 
53
 
46
54
locale.setlocale(locale.LC_ALL, '')
47
55
 
48
 
import logging
49
56
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
50
57
 
51
58
# Some useful constants
52
59
domain = 'se.recompile'
53
60
server_interface = domain + '.Mandos'
54
61
client_interface = domain + '.Mandos.Client'
55
 
version = "1.5.0"
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)
 
62
version = "1.8.3"
 
63
 
 
64
try:
 
65
    dbus.OBJECT_MANAGER_IFACE
 
66
except AttributeError:
 
67
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
68
 
64
69
 
65
70
def isoformat_to_datetime(iso):
66
71
    "Parse an ISO 8601 date string to a datetime.datetime()"
75
80
                             int(day),
76
81
                             int(hour),
77
82
                             int(minute),
78
 
                             int(second),           # Whole seconds
79
 
                             int(fraction*1000000)) # Microseconds
 
83
                             int(second),            # Whole seconds
 
84
                             int(fraction*1000000))  # Microseconds
 
85
 
80
86
 
81
87
class MandosClientPropertyCache(object):
82
88
    """This wraps a Mandos Client D-Bus proxy object, caches the
83
89
    properties and calls a hook function when any of them are
84
90
    changed.
85
91
    """
86
 
    def __init__(self, proxy_object=None, *args, **kwargs):
87
 
        self.proxy = proxy_object # Mandos Client proxy object
88
 
        
89
 
        self.properties = dict()
 
92
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
93
        self.proxy = proxy_object  # Mandos Client proxy object
 
94
        self.properties = dict() if properties is None else properties
90
95
        self.property_changed_match = (
91
 
            self.proxy.connect_to_signal("PropertyChanged",
92
 
                                         self.property_changed,
93
 
                                         client_interface,
 
96
            self.proxy.connect_to_signal("PropertiesChanged",
 
97
                                         self.properties_changed,
 
98
                                         dbus.PROPERTIES_IFACE,
94
99
                                         byte_arrays=True))
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.
 
100
 
 
101
        if properties is None:
 
102
            self.properties.update(self.proxy.GetAll(
 
103
                client_interface,
 
104
                dbus_interface=dbus.PROPERTIES_IFACE))
 
105
 
 
106
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
107
 
 
108
    def properties_changed(self, interface, properties, invalidated):
 
109
        """This is called whenever we get a PropertiesChanged signal
 
110
        It updates the changed properties in the "properties" dict.
107
111
        """
108
112
        # Update properties dict with new value
109
 
        self.properties[property] = value
110
 
    
111
 
    def delete(self, *args, **kwargs):
 
113
        if interface == client_interface:
 
114
            self.properties.update(properties)
 
115
 
 
116
    def delete(self):
112
117
        self.property_changed_match.remove()
113
 
        super(MandosClientPropertyCache, self).__init__(
114
 
            *args, **kwargs)
115
118
 
116
119
 
117
120
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
118
121
    """A Mandos Client which is visible on the screen.
119
122
    """
120
 
    
 
123
 
121
124
    def __init__(self, server_proxy_object=None, update_hook=None,
122
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
125
                 delete_hook=None, logger=None, **kwargs):
123
126
        # Called on update
124
127
        self.update_hook = update_hook
125
128
        # Called on delete
128
131
        self.server_proxy_object = server_proxy_object
129
132
        # Logger
130
133
        self.logger = logger
131
 
        
 
134
 
132
135
        self._update_timer_callback_tag = None
133
 
        self._update_timer_callback_lock = 0
134
 
        self.last_checker_failed = False
135
 
        
 
136
 
136
137
        # The widget shown normally
137
138
        self._text_widget = urwid.Text("")
138
139
        # The widget shown when we have focus
139
140
        self._focus_text_widget = urwid.Text("")
140
 
        super(MandosClientWidget, self).__init__(
141
 
            update_hook=update_hook, delete_hook=delete_hook,
142
 
            *args, **kwargs)
 
141
        super(MandosClientWidget, self).__init__(**kwargs)
143
142
        self.update()
144
143
        self.opened = False
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
 
        
 
144
 
164
145
        self.match_objects = (
165
146
            self.proxy.connect_to_signal("CheckerCompleted",
166
147
                                         self.checker_completed,
182
163
                                         self.rejected,
183
164
                                         client_interface,
184
165
                                         byte_arrays=True))
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
 
        
 
166
        self.logger('Created client {}'
 
167
                    .format(self.properties["Name"]), level=0)
 
168
 
193
169
    def using_timer(self, flag):
194
170
        """Call this method with True or False when timer should be
195
171
        activated or deactivated.
196
172
        """
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:
 
173
        if flag and self._update_timer_callback_tag is None:
203
174
            # Will update the shown timer value every second
204
 
            self._update_timer_callback_tag = (gobject.timeout_add
 
175
            self._update_timer_callback_tag = (GLib.timeout_add
205
176
                                               (1000,
206
177
                                                self.update_timer))
207
 
        elif old and self._update_timer_callback_lock == 0:
208
 
            gobject.source_remove(self._update_timer_callback_tag)
 
178
        elif not (flag or self._update_timer_callback_tag is None):
 
179
            GLib.source_remove(self._update_timer_callback_tag)
209
180
            self._update_timer_callback_tag = None
210
 
    
 
181
 
211
182
    def checker_completed(self, exitstatus, condition, command):
212
183
        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))
 
184
            self.logger('Checker for client {} (command "{}")'
 
185
                        ' succeeded'.format(self.properties["Name"],
 
186
                                            command), level=0)
219
187
            self.update()
220
188
            return
221
189
        # Checker failed
222
 
        if not self.last_checker_failed:
223
 
            self.last_checker_failed = True
224
 
            self.using_timer(True)
225
190
        if os.WIFEXITED(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)))
 
191
            self.logger('Checker for client {} (command "{}") failed'
 
192
                        ' with exit code {}'
 
193
                        .format(self.properties["Name"], command,
 
194
                                os.WEXITSTATUS(condition)))
230
195
        elif os.WIFSIGNALED(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')
 
196
            self.logger('Checker for client {} (command "{}") was'
 
197
                        ' killed by signal {}'
 
198
                        .format(self.properties["Name"], command,
 
199
                                os.WTERMSIG(condition)))
242
200
        self.update()
243
 
    
 
201
 
244
202
    def checker_started(self, command):
245
 
        """Server signals that a checker started. This could be useful
246
 
           to log in the future. """
247
 
        #self.logger('Client %s started checker "%s"'
248
 
        #            % (self.properties["Name"], unicode(command)))
249
 
        pass
250
 
    
 
203
        """Server signals that a checker started."""
 
204
        self.logger('Client {} started checker "{}"'
 
205
                    .format(self.properties["Name"],
 
206
                            command), level=0)
 
207
 
251
208
    def got_secret(self):
252
 
        self.last_checker_failed = False
253
 
        self.logger('Client %s received its secret'
254
 
                    % self.properties["Name"])
255
 
    
 
209
        self.logger('Client {} received its secret'
 
210
                    .format(self.properties["Name"]))
 
211
 
256
212
    def need_approval(self, timeout, default):
257
213
        if not default:
258
 
            message = 'Client %s needs approval within %s seconds'
 
214
            message = 'Client {} needs approval within {} seconds'
259
215
        else:
260
 
            message = 'Client %s will get its secret in %s seconds'
261
 
        self.logger(message
262
 
                    % (self.properties["Name"], timeout/1000))
263
 
        self.using_timer(True)
264
 
    
 
216
            message = 'Client {} will get its secret in {} seconds'
 
217
        self.logger(message.format(self.properties["Name"],
 
218
                                   timeout/1000))
 
219
 
265
220
    def rejected(self, reason):
266
 
        self.logger('Client %s was rejected; reason: %s'
267
 
                    % (self.properties["Name"], reason))
268
 
    
 
221
        self.logger('Client {} was rejected; reason: {}'
 
222
                    .format(self.properties["Name"], reason))
 
223
 
269
224
    def selectable(self):
270
225
        """Make this a "selectable" widget.
271
226
        This overrides the method from urwid.FlowWidget."""
272
227
        return True
273
 
    
 
228
 
274
229
    def rows(self, maxcolrow, focus=False):
275
230
        """How many rows this widget will occupy might depend on
276
231
        whether we have focus or not.
277
232
        This overrides the method from urwid.FlowWidget"""
278
233
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
279
 
    
 
234
 
280
235
    def current_widget(self, focus=False):
281
236
        if focus or self.opened:
282
237
            return self._focus_widget
283
238
        return self._widget
284
 
    
 
239
 
285
240
    def update(self):
286
241
        "Called when what is visible on the screen should be updated."
287
242
        # How to add standout mode to a style
288
 
        with_standout = { "normal": "standout",
289
 
                          "bold": "bold-standout",
290
 
                          "underline-blink":
291
 
                              "underline-blink-standout",
292
 
                          "bold-underline-blink":
293
 
                              "bold-underline-blink-standout",
294
 
                          }
 
243
        with_standout = {"normal": "standout",
 
244
                         "bold": "bold-standout",
 
245
                         "underline-blink":
 
246
                         "underline-blink-standout",
 
247
                         "bold-underline-blink":
 
248
                         "bold-underline-blink-standout",
 
249
                         }
295
250
 
296
251
        # Rebuild focus and non-focus widgets using current properties
297
252
 
298
253
        # Base part of a client. Name!
299
 
        base = ('%(name)s: '
300
 
                      % {"name": self.properties["Name"]})
 
254
        base = '{name}: '.format(name=self.properties["Name"])
301
255
        if not self.properties["Enabled"]:
302
256
            message = "DISABLED"
 
257
            self.using_timer(False)
303
258
        elif self.properties["ApprovalPending"]:
304
 
            timeout = datetime.timedelta(milliseconds
305
 
                                         = self.properties
306
 
                                         ["ApprovalDelay"])
 
259
            timeout = datetime.timedelta(
 
260
                milliseconds=self.properties["ApprovalDelay"])
307
261
            last_approval_request = isoformat_to_datetime(
308
262
                self.properties["LastApprovalRequest"])
309
263
            if last_approval_request is not None:
310
 
                timer = timeout - (datetime.datetime.utcnow()
311
 
                                   - last_approval_request)
 
264
                timer = max(timeout - (datetime.datetime.utcnow()
 
265
                                       - last_approval_request),
 
266
                            datetime.timedelta())
312
267
            else:
313
268
                timer = datetime.timedelta()
314
269
            if self.properties["ApprovedByDefault"]:
315
 
                message = "Approval in %s. (d)eny?"
 
270
                message = "Approval in {}. (d)eny?"
316
271
            else:
317
 
                message = "Denial in %s. (a)pprove?"
318
 
            message = message % unicode(timer).rsplit(".", 1)[0]
319
 
        elif self.last_checker_failed:
320
 
            # When checker has failed, print a timer until client expires
 
272
                message = "Denial in {}. (a)pprove?"
 
273
            message = message.format(str(timer).rsplit(".", 1)[0])
 
274
            self.using_timer(True)
 
275
        elif self.properties["LastCheckerStatus"] != 0:
 
276
            # When checker has failed, show timer until client expires
321
277
            expires = self.properties["Expires"]
322
278
            if expires == "":
323
279
                timer = datetime.timedelta(0)
324
280
            else:
325
 
                expires = datetime.datetime.strptime(expires,
326
 
                                                     '%Y-%m-%dT%H:%M:%S.%f')
327
 
                timer = expires - datetime.datetime.utcnow()
 
281
                expires = (datetime.datetime.strptime
 
282
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
283
                timer = max(expires - datetime.datetime.utcnow(),
 
284
                            datetime.timedelta())
328
285
            message = ('A checker has failed! Time until client'
329
 
                       ' gets disabled: %s'
330
 
                           % unicode(timer).rsplit(".", 1)[0])
 
286
                       ' gets disabled: {}'
 
287
                       .format(str(timer).rsplit(".", 1)[0]))
 
288
            self.using_timer(True)
331
289
        else:
332
290
            message = "enabled"
333
 
        self._text = "%s%s" % (base, message)
334
 
            
 
291
            self.using_timer(False)
 
292
        self._text = "{}{}".format(base, message)
 
293
 
335
294
        if not urwid.supports_unicode():
336
295
            self._text = self._text.encode("ascii", "replace")
337
296
        textlist = [("normal", self._text)]
347
306
        # Run update hook, if any
348
307
        if self.update_hook is not None:
349
308
            self.update_hook()
350
 
    
 
309
 
351
310
    def update_timer(self):
352
 
        """called by gobject. Will indefinitely loop until
353
 
        gobject.source_remove() on tag is called"""
 
311
        """called by GLib. Will indefinitely loop until
 
312
        GLib.source_remove() on tag is called
 
313
        """
354
314
        self.update()
355
315
        return True             # Keep calling this
356
 
    
357
 
    def delete(self, *args, **kwargs):
 
316
 
 
317
    def delete(self, **kwargs):
358
318
        if self._update_timer_callback_tag is not None:
359
 
            gobject.source_remove(self._update_timer_callback_tag)
 
319
            GLib.source_remove(self._update_timer_callback_tag)
360
320
            self._update_timer_callback_tag = None
361
321
        for match in self.match_objects:
362
322
            match.remove()
363
323
        self.match_objects = ()
364
324
        if self.delete_hook is not None:
365
325
            self.delete_hook(self)
366
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
367
 
    
 
326
        return super(MandosClientWidget, self).delete(**kwargs)
 
327
 
368
328
    def render(self, maxcolrow, focus=False):
369
329
        """Render differently if we have focus.
370
330
        This overrides the method from urwid.FlowWidget"""
371
331
        return self.current_widget(focus).render(maxcolrow,
372
332
                                                 focus=focus)
373
 
    
 
333
 
374
334
    def keypress(self, maxcolrow, key):
375
335
        """Handle keys.
376
336
        This overrides the method from urwid.FlowWidget"""
377
337
        if key == "+":
378
 
            self.proxy.Enable(dbus_interface = client_interface,
379
 
                              ignore_reply=True)
 
338
            self.proxy.Set(client_interface, "Enabled",
 
339
                           dbus.Boolean(True), ignore_reply=True,
 
340
                           dbus_interface=dbus.PROPERTIES_IFACE)
380
341
        elif key == "-":
381
 
            self.proxy.Disable(dbus_interface = client_interface,
382
 
                               ignore_reply=True)
 
342
            self.proxy.Set(client_interface, "Enabled", False,
 
343
                           ignore_reply=True,
 
344
                           dbus_interface=dbus.PROPERTIES_IFACE)
383
345
        elif key == "a":
384
346
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
385
 
                               dbus_interface = client_interface,
 
347
                               dbus_interface=client_interface,
386
348
                               ignore_reply=True)
387
349
        elif key == "d":
388
350
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
389
 
                                  dbus_interface = client_interface,
 
351
                               dbus_interface=client_interface,
390
352
                               ignore_reply=True)
391
353
        elif key == "R" or key == "_" or key == "ctrl k":
392
354
            self.server_proxy_object.RemoveClient(self.proxy
393
355
                                                  .object_path,
394
356
                                                  ignore_reply=True)
395
357
        elif key == "s":
396
 
            self.proxy.StartChecker(dbus_interface = client_interface,
397
 
                                    ignore_reply=True)
 
358
            self.proxy.Set(client_interface, "CheckerRunning",
 
359
                           dbus.Boolean(True), ignore_reply=True,
 
360
                           dbus_interface=dbus.PROPERTIES_IFACE)
398
361
        elif key == "S":
399
 
            self.proxy.StopChecker(dbus_interface = client_interface,
400
 
                                   ignore_reply=True)
 
362
            self.proxy.Set(client_interface, "CheckerRunning",
 
363
                           dbus.Boolean(False), ignore_reply=True,
 
364
                           dbus_interface=dbus.PROPERTIES_IFACE)
401
365
        elif key == "C":
402
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
366
            self.proxy.CheckedOK(dbus_interface=client_interface,
403
367
                                 ignore_reply=True)
404
368
        # xxx
405
369
#         elif key == "p" or key == "=":
410
374
#             self.open()
411
375
        else:
412
376
            return key
413
 
    
414
 
    def property_changed(self, property=None, value=None,
415
 
                         *args, **kwargs):
416
 
        """Call self.update() if old value is not new value.
 
377
 
 
378
    def properties_changed(self, interface, properties, invalidated):
 
379
        """Call self.update() if any properties changed.
417
380
        This overrides the method from MandosClientPropertyCache"""
418
 
        property_name = unicode(property)
419
 
        old_value = self.properties.get(property_name)
420
 
        super(MandosClientWidget, self).property_changed(
421
 
            property=property, value=value, *args, **kwargs)
422
 
        if self.properties.get(property_name) != old_value:
 
381
        old_values = {key: self.properties.get(key)
 
382
                      for key in properties.keys()}
 
383
        super(MandosClientWidget, self).properties_changed(
 
384
            interface, properties, invalidated)
 
385
        if any(old_values[key] != self.properties.get(key)
 
386
               for key in old_values):
423
387
            self.update()
424
388
 
425
389
 
428
392
    "down" key presses, thus not allowing any containing widgets to
429
393
    use them as an excuse to shift focus away from this widget.
430
394
    """
431
 
    def keypress(self, maxcolrow, key):
432
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
 
395
    def keypress(self, *args, **kwargs):
 
396
        ret = (super(ConstrainedListBox, self)
 
397
               .keypress(*args, **kwargs))
433
398
        if ret in ("up", "down"):
434
399
            return
435
400
        return ret
439
404
    """This is the entire user interface - the whole screen
440
405
    with boxes, lists of client widgets, etc.
441
406
    """
442
 
    def __init__(self, max_log_length=1000):
 
407
    def __init__(self, max_log_length=1000, log_level=1):
443
408
        DBusGMainLoop(set_as_default=True)
444
 
        
 
409
 
445
410
        self.screen = urwid.curses_display.Screen()
446
 
        
 
411
 
447
412
        self.screen.register_palette((
448
413
                ("normal",
449
414
                 "default", "default", None),
450
415
                ("bold",
451
 
                 "default", "default", "bold"),
 
416
                 "bold", "default", "bold"),
452
417
                ("underline-blink",
453
 
                 "default", "default", "underline"),
 
418
                 "underline,blink", "default", "underline,blink"),
454
419
                ("standout",
455
 
                 "default", "default", "standout"),
 
420
                 "standout", "default", "standout"),
456
421
                ("bold-underline-blink",
457
 
                 "default", "default", ("bold", "underline")),
 
422
                 "bold,underline,blink", "default",
 
423
                 "bold,underline,blink"),
458
424
                ("bold-standout",
459
 
                 "default", "default", ("bold", "standout")),
 
425
                 "bold,standout", "default", "bold,standout"),
460
426
                ("underline-blink-standout",
461
 
                 "default", "default", ("underline", "standout")),
 
427
                 "underline,blink,standout", "default",
 
428
                 "underline,blink,standout"),
462
429
                ("bold-underline-blink-standout",
463
 
                 "default", "default", ("bold", "underline",
464
 
                                          "standout")),
 
430
                 "bold,underline,blink,standout", "default",
 
431
                 "bold,underline,blink,standout"),
465
432
                ))
466
 
        
 
433
 
467
434
        if urwid.supports_unicode():
468
 
            self.divider = "─" # \u2500
469
 
            #self.divider = "━" # \u2501
 
435
            self.divider = "─"  # \u2500
470
436
        else:
471
 
            #self.divider = "-" # \u002d
472
 
            self.divider = "_" # \u005f
473
 
        
 
437
            self.divider = "_"  # \u005f
 
438
 
474
439
        self.screen.start()
475
 
        
 
440
 
476
441
        self.size = self.screen.get_cols_rows()
477
 
        
 
442
 
478
443
        self.clients = urwid.SimpleListWalker([])
479
444
        self.clients_dict = {}
480
 
        
 
445
 
481
446
        # We will add Text widgets to this list
482
 
        self.log = []
 
447
        self.log = urwid.SimpleListWalker([])
483
448
        self.max_log_length = max_log_length
484
 
        
 
449
 
 
450
        self.log_level = log_level
 
451
 
485
452
        # We keep a reference to the log widget so we can remove it
486
453
        # from the ListWalker without it getting destroyed
487
454
        self.logbox = ConstrainedListBox(self.log)
488
 
        
 
455
 
489
456
        # This keeps track of whether self.uilist currently has
490
457
        # self.logbox in it or not
491
458
        self.log_visible = True
492
459
        self.log_wrap = "any"
493
 
        
 
460
 
494
461
        self.rebuild()
495
462
        self.log_message_raw(("bold",
496
463
                              "Mandos Monitor version " + version))
497
464
        self.log_message_raw(("bold",
498
465
                              "q: Quit  ?: Help"))
499
 
        
 
466
 
500
467
        self.busname = domain + '.Mandos'
501
 
        self.main_loop = gobject.MainLoop()
502
 
    
 
468
        self.main_loop = GLib.MainLoop()
 
469
 
503
470
    def client_not_found(self, fingerprint, address):
504
 
        self.log_message(("Client with address %s and fingerprint %s"
505
 
                          " could not be found" % (address,
506
 
                                                    fingerprint)))
507
 
    
 
471
        self.log_message("Client with address {} and fingerprint {}"
 
472
                         " could not be found"
 
473
                         .format(address, fingerprint))
 
474
 
508
475
    def rebuild(self):
509
476
        """This rebuilds the User Interface.
510
477
        Call this when the widget layout needs to change"""
511
478
        self.uilist = []
512
 
        #self.uilist.append(urwid.ListBox(self.clients))
 
479
        # self.uilist.append(urwid.ListBox(self.clients))
513
480
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
514
481
                                                          clients),
515
 
                                       #header=urwid.Divider(),
 
482
                                       # header=urwid.Divider(),
516
483
                                       header=None,
517
 
                                       footer=
518
 
                                       urwid.Divider(div_char=
519
 
                                                     self.divider)))
 
484
                                       footer=urwid.Divider(
 
485
                                           div_char=self.divider)))
520
486
        if self.log_visible:
521
487
            self.uilist.append(self.logbox)
522
488
        self.topwidget = urwid.Pile(self.uilist)
523
 
    
524
 
    def log_message(self, message):
 
489
 
 
490
    def log_message(self, message, level=1):
 
491
        """Log message formatted with timestamp"""
 
492
        if level < self.log_level:
 
493
            return
525
494
        timestamp = datetime.datetime.now().isoformat()
526
 
        self.log_message_raw(timestamp + ": " + message)
527
 
    
528
 
    def log_message_raw(self, markup):
 
495
        self.log_message_raw("{}: {}".format(timestamp, message),
 
496
                             level=level)
 
497
 
 
498
    def log_message_raw(self, markup, level=1):
529
499
        """Add a log message to the log buffer."""
 
500
        if level < self.log_level:
 
501
            return
530
502
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
531
 
        if (self.max_log_length
532
 
            and len(self.log) > self.max_log_length):
533
 
            del self.log[0:len(self.log)-self.max_log_length-1]
534
 
        self.logbox.set_focus(len(self.logbox.body.contents),
 
503
        if self.max_log_length:
 
504
            if len(self.log) > self.max_log_length:
 
505
                del self.log[0:len(self.log)-self.max_log_length-1]
 
506
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
535
507
                              coming_from="above")
536
508
        self.refresh()
537
 
    
 
509
 
538
510
    def toggle_log_display(self):
539
511
        """Toggle visibility of the log buffer."""
540
512
        self.log_visible = not self.log_visible
541
513
        self.rebuild()
542
 
        #self.log_message("Log visibility changed to: "
543
 
        #                 + unicode(self.log_visible))
544
 
    
 
514
        self.log_message("Log visibility changed to: {}"
 
515
                         .format(self.log_visible), level=0)
 
516
 
545
517
    def change_log_display(self):
546
518
        """Change type of log display.
547
519
        Currently, this toggles wrapping of text lines."""
551
523
            self.log_wrap = "clip"
552
524
        for textwidget in self.log:
553
525
            textwidget.set_wrap_mode(self.log_wrap)
554
 
        #self.log_message("Wrap mode: " + self.log_wrap)
555
 
    
556
 
    def find_and_remove_client(self, path, name):
 
526
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
527
                         level=0)
 
528
 
 
529
    def find_and_remove_client(self, path, interfaces):
557
530
        """Find a client by its object path and remove it.
558
 
        
559
 
        This is connected to the ClientRemoved signal from the
 
531
 
 
532
        This is connected to the InterfacesRemoved signal from the
560
533
        Mandos server object."""
 
534
        if client_interface not in interfaces:
 
535
            # Not a Mandos client object; ignore
 
536
            return
561
537
        try:
562
538
            client = self.clients_dict[path]
563
539
        except KeyError:
564
540
            # not found?
565
 
            self.log_message("Unknown client %r (%r) removed", name,
566
 
                             path)
 
541
            self.log_message("Unknown client {!r} removed"
 
542
                             .format(path))
567
543
            return
568
544
        client.delete()
569
 
    
570
 
    def add_new_client(self, path):
 
545
 
 
546
    def add_new_client(self, path, ifs_and_props):
 
547
        """Find a client by its object path and remove it.
 
548
 
 
549
        This is connected to the InterfacesAdded signal from the
 
550
        Mandos server object.
 
551
        """
 
552
        if client_interface not in ifs_and_props:
 
553
            # Not a Mandos client object; ignore
 
554
            return
571
555
        client_proxy_object = self.bus.get_object(self.busname, path)
572
 
        self.add_client(MandosClientWidget(server_proxy_object
573
 
                                           =self.mandos_serv,
574
 
                                           proxy_object
575
 
                                           =client_proxy_object,
576
 
                                           update_hook
577
 
                                           =self.refresh,
578
 
                                           delete_hook
579
 
                                           =self.remove_client,
580
 
                                           logger
581
 
                                           =self.log_message),
 
556
        self.add_client(MandosClientWidget(
 
557
            server_proxy_object=self.mandos_serv,
 
558
            proxy_object=client_proxy_object,
 
559
            update_hook=self.refresh,
 
560
            delete_hook=self.remove_client,
 
561
            logger=self.log_message,
 
562
            properties=dict(ifs_and_props[client_interface])),
582
563
                        path=path)
583
 
    
 
564
 
584
565
    def add_client(self, client, path=None):
585
566
        self.clients.append(client)
586
567
        if path is None:
587
568
            path = client.proxy.object_path
588
569
        self.clients_dict[path] = client
589
 
        self.clients.sort(None, lambda c: c.properties["Name"])
 
570
        self.clients.sort(key=lambda c: c.properties["Name"])
590
571
        self.refresh()
591
 
    
 
572
 
592
573
    def remove_client(self, client, path=None):
593
574
        self.clients.remove(client)
594
575
        if path is None:
595
576
            path = client.proxy.object_path
596
577
        del self.clients_dict[path]
597
 
        if not self.clients_dict:
598
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
599
 
            # is completely emptied, we need to recreate it.
600
 
            self.clients = urwid.SimpleListWalker([])
601
 
            self.rebuild()
602
578
        self.refresh()
603
 
    
 
579
 
604
580
    def refresh(self):
605
581
        """Redraw the screen"""
606
582
        canvas = self.topwidget.render(self.size, focus=True)
607
583
        self.screen.draw_screen(self.size, canvas)
608
 
    
 
584
 
609
585
    def run(self):
610
586
        """Start the main loop and exit when it's done."""
611
587
        self.bus = dbus.SystemBus()
612
588
        mandos_dbus_objc = self.bus.get_object(
613
589
            self.busname, "/", follow_name_owner_changes=True)
614
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
615
 
                                          dbus_interface
616
 
                                          = server_interface)
 
590
        self.mandos_serv = dbus.Interface(
 
591
            mandos_dbus_objc, dbus_interface=server_interface)
617
592
        try:
618
593
            mandos_clients = (self.mandos_serv
619
594
                              .GetAllClientsWithProperties())
 
595
            if not mandos_clients:
 
596
                self.log_message_raw(("bold",
 
597
                                      "Note: Server has no clients."))
620
598
        except dbus.exceptions.DBusException:
 
599
            self.log_message_raw(("bold",
 
600
                                  "Note: No Mandos server running."))
621
601
            mandos_clients = dbus.Dictionary()
622
 
        
 
602
 
623
603
        (self.mandos_serv
624
 
         .connect_to_signal("ClientRemoved",
 
604
         .connect_to_signal("InterfacesRemoved",
625
605
                            self.find_and_remove_client,
626
 
                            dbus_interface=server_interface,
 
606
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
627
607
                            byte_arrays=True))
628
608
        (self.mandos_serv
629
 
         .connect_to_signal("ClientAdded",
 
609
         .connect_to_signal("InterfacesAdded",
630
610
                            self.add_new_client,
631
 
                            dbus_interface=server_interface,
 
611
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
632
612
                            byte_arrays=True))
633
613
        (self.mandos_serv
634
614
         .connect_to_signal("ClientNotFound",
635
615
                            self.client_not_found,
636
616
                            dbus_interface=server_interface,
637
617
                            byte_arrays=True))
638
 
        for path, client in mandos_clients.iteritems():
 
618
        for path, client in mandos_clients.items():
639
619
            client_proxy_object = self.bus.get_object(self.busname,
640
620
                                                      path)
641
 
            self.add_client(MandosClientWidget(server_proxy_object
642
 
                                               =self.mandos_serv,
643
 
                                               proxy_object
644
 
                                               =client_proxy_object,
645
 
                                               properties=client,
646
 
                                               update_hook
647
 
                                               =self.refresh,
648
 
                                               delete_hook
649
 
                                               =self.remove_client,
650
 
                                               logger
651
 
                                               =self.log_message),
 
621
            self.add_client(MandosClientWidget(
 
622
                server_proxy_object=self.mandos_serv,
 
623
                proxy_object=client_proxy_object,
 
624
                properties=client,
 
625
                update_hook=self.refresh,
 
626
                delete_hook=self.remove_client,
 
627
                logger=self.log_message),
652
628
                            path=path)
653
629
 
654
630
        self.refresh()
655
 
        self._input_callback_tag = (gobject.io_add_watch
 
631
        self._input_callback_tag = (GLib.io_add_watch
656
632
                                    (sys.stdin.fileno(),
657
 
                                     gobject.IO_IN,
 
633
                                     GLib.IO_IN,
658
634
                                     self.process_input))
659
635
        self.main_loop.run()
660
636
        # Main loop has finished, we should close everything now
661
 
        gobject.source_remove(self._input_callback_tag)
 
637
        GLib.source_remove(self._input_callback_tag)
662
638
        self.screen.stop()
663
 
    
 
639
 
664
640
    def stop(self):
665
641
        self.main_loop.quit()
666
 
    
 
642
 
667
643
    def process_input(self, source, condition):
668
644
        keys = self.screen.get_input()
669
 
        translations = { "ctrl n": "down",      # Emacs
670
 
                         "ctrl p": "up",        # Emacs
671
 
                         "ctrl v": "page down", # Emacs
672
 
                         "meta v": "page up",   # Emacs
673
 
                         " ": "page down",      # less
674
 
                         "f": "page down",      # less
675
 
                         "b": "page up",        # less
676
 
                         "j": "down",           # vi
677
 
                         "k": "up",             # vi
678
 
                         }
 
645
        translations = {"ctrl n": "down",       # Emacs
 
646
                        "ctrl p": "up",         # Emacs
 
647
                        "ctrl v": "page down",  # Emacs
 
648
                        "meta v": "page up",    # Emacs
 
649
                        " ": "page down",       # less
 
650
                        "f": "page down",       # less
 
651
                        "b": "page up",         # less
 
652
                        "j": "down",            # vi
 
653
                        "k": "up",              # vi
 
654
                        }
679
655
        for key in keys:
680
656
            try:
681
657
                key = translations[key]
682
658
            except KeyError:    # :-)
683
659
                pass
684
 
            
 
660
 
685
661
            if key == "q" or key == "Q":
686
662
                self.stop()
687
663
                break
688
664
            elif key == "window resize":
689
665
                self.size = self.screen.get_cols_rows()
690
666
                self.refresh()
691
 
            elif key == "\f":  # Ctrl-L
 
667
            elif key == "ctrl l":
 
668
                self.screen.clear()
692
669
                self.refresh()
693
670
            elif key == "l" or key == "D":
694
671
                self.toggle_log_display()
706
683
                                            "?: Help",
707
684
                                            "l: Log window toggle",
708
685
                                            "TAB: Switch window",
709
 
                                            "w: Wrap (log)"))))
 
686
                                            "w: Wrap (log lines)",
 
687
                                            "v: Toggle verbose log",
 
688
                                            ))))
710
689
                self.log_message_raw(("bold",
711
690
                                      "  "
712
691
                                      .join(("Clients:",
725
704
                else:
726
705
                    self.topwidget.set_focus(self.logbox)
727
706
                self.refresh()
728
 
            #elif (key == "end" or key == "meta >" or key == "G"
729
 
            #      or key == ">"):
730
 
            #    pass            # xxx end-of-buffer
731
 
            #elif (key == "home" or key == "meta <" or key == "g"
732
 
            #      or key == "<"):
733
 
            #    pass            # xxx beginning-of-buffer
734
 
            #elif key == "ctrl e" or key == "$":
735
 
            #    pass            # xxx move-end-of-line
736
 
            #elif key == "ctrl a" or key == "^":
737
 
            #    pass            # xxx move-beginning-of-line
738
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
739
 
            #    pass            # xxx left
740
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
741
 
            #    pass            # xxx right
742
 
            #elif key == "a":
743
 
            #    pass            # scroll up log
744
 
            #elif key == "z":
745
 
            #    pass            # scroll down log
 
707
            elif key == "v":
 
708
                if self.log_level == 0:
 
709
                    self.log_level = 1
 
710
                    self.log_message("Verbose mode: Off")
 
711
                else:
 
712
                    self.log_level = 0
 
713
                    self.log_message("Verbose mode: On")
 
714
            # elif (key == "end" or key == "meta >" or key == "G"
 
715
            #       or key == ">"):
 
716
            #     pass            # xxx end-of-buffer
 
717
            # elif (key == "home" or key == "meta <" or key == "g"
 
718
            #       or key == "<"):
 
719
            #     pass            # xxx beginning-of-buffer
 
720
            # elif key == "ctrl e" or key == "$":
 
721
            #     pass            # xxx move-end-of-line
 
722
            # elif key == "ctrl a" or key == "^":
 
723
            #     pass            # xxx move-beginning-of-line
 
724
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
725
            #     pass            # xxx left
 
726
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
727
            #     pass            # xxx right
 
728
            # elif key == "a":
 
729
            #     pass            # scroll up log
 
730
            # elif key == "z":
 
731
            #     pass            # scroll down log
746
732
            elif self.topwidget.selectable():
747
733
                self.topwidget.keypress(self.size, key)
748
734
                self.refresh()
749
735
        return True
750
736
 
 
737
 
751
738
ui = UserInterface()
752
739
try:
753
740
    ui.run()
754
741
except KeyboardInterrupt:
755
742
    ui.screen.stop()
756
 
except Exception, e:
757
 
    ui.log_message(unicode(e))
 
743
except Exception as e:
 
744
    ui.log_message(str(e))
758
745
    ui.screen.stop()
759
746
    raise