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  • Committer: Teddy Hogeborn
  • Date: 2024-11-22 20:30:34 UTC
  • Revision ID: teddy@recompile.se-20241122203034-92q7483wxv29tqev
mandos-monitor: avoid deprecation warnings from urwid

The urwid.FlowWidget class is deprecated.  Replace it with inheriting
from urwid.Widget, and setting the appropriate class attribute.

* mandos-monitor: Replace any mentions of urwid.FlowWidget with
  urwid.Widget.
  (MandosClientWidget): Inherit from "urwid.Widget" instead of
  "urwid.FlowWidget".  Also, move MandosClientPropertyCache to first
  in inheritance list so that its __init__ method can absorb the
  "proxy_object" and "properties" keyword arguments.
  (MandosClientWidget._sizing): New class attribute; set to
  "frozenset(["flow"])".

(Thanks to an anonymous contributor for reporting this.)

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mandos-monitor
1
 
#!/usr/bin/python
 
1
#!/usr/bin/python3 -bbI
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
 
# 
24
 
 
 
25
#
25
26
from __future__ import (division, absolute_import, print_function,
26
27
                        unicode_literals)
27
28
 
 
29
try:
 
30
    from future_builtins import *
 
31
except ImportError:
 
32
    pass
 
33
 
28
34
import sys
 
35
import logging
29
36
import os
30
 
import signal
31
 
 
 
37
import warnings
32
38
import datetime
 
39
import locale
33
40
 
34
41
import urwid.curses_display
35
42
import urwid
36
43
 
37
44
from dbus.mainloop.glib import DBusGMainLoop
38
 
import gobject
 
45
from gi.repository import GLib
39
46
 
40
47
import dbus
41
48
 
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)
 
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)
 
67
logging.getLogger("urwid").setLevel(logging.INFO)
50
68
 
51
69
# Some useful constants
52
 
domain = 'se.recompile'
53
 
server_interface = domain + '.Mandos'
54
 
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)
 
70
domain = "se.recompile"
 
71
server_interface = domain + ".Mandos"
 
72
client_interface = domain + ".Mandos.Client"
 
73
version = "1.8.17"
 
74
 
 
75
try:
 
76
    dbus.OBJECT_MANAGER_IFACE
 
77
except AttributeError:
 
78
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
79
 
64
80
 
65
81
def isoformat_to_datetime(iso):
66
82
    "Parse an ISO 8601 date string to a datetime.datetime()"
75
91
                             int(day),
76
92
                             int(hour),
77
93
                             int(minute),
78
 
                             int(second),           # Whole seconds
79
 
                             int(fraction*1000000)) # Microseconds
80
 
 
81
 
class MandosClientPropertyCache(object):
 
94
                             int(second),            # Whole seconds
 
95
                             int(fraction*1000000))  # Microseconds
 
96
 
 
97
 
 
98
class MandosClientPropertyCache:
82
99
    """This wraps a Mandos Client D-Bus proxy object, caches the
83
100
    properties and calls a hook function when any of them are
84
101
    changed.
85
102
    """
86
 
    def __init__(self, proxy_object=None, *args, **kwargs):
87
 
        self.proxy = proxy_object # Mandos Client proxy object
88
 
        
89
 
        self.properties = dict()
 
103
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
104
        self.proxy = proxy_object  # Mandos Client proxy object
 
105
        self.properties = dict() if properties is None else properties
90
106
        self.property_changed_match = (
91
 
            self.proxy.connect_to_signal("PropertyChanged",
92
 
                                         self.property_changed,
93
 
                                         client_interface,
 
107
            self.proxy.connect_to_signal("PropertiesChanged",
 
108
                                         self.properties_changed,
 
109
                                         dbus.PROPERTIES_IFACE,
94
110
                                         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.
 
111
 
 
112
        if properties is None:
 
113
            self.properties.update(self.proxy.GetAll(
 
114
                client_interface,
 
115
                dbus_interface=dbus.PROPERTIES_IFACE))
 
116
 
 
117
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
118
 
 
119
    def properties_changed(self, interface, properties, invalidated):
 
120
        """This is called whenever we get a PropertiesChanged signal
 
121
        It updates the changed properties in the "properties" dict.
107
122
        """
108
123
        # Update properties dict with new value
109
 
        self.properties[property] = value
110
 
    
111
 
    def delete(self, *args, **kwargs):
 
124
        if interface == client_interface:
 
125
            self.properties.update(properties)
 
126
 
 
127
    def delete(self):
112
128
        self.property_changed_match.remove()
113
 
        super(MandosClientPropertyCache, self).__init__(
114
 
            *args, **kwargs)
115
 
 
116
 
 
117
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
 
129
 
 
130
 
 
131
class MandosClientWidget(MandosClientPropertyCache, urwid.Widget):
118
132
    """A Mandos Client which is visible on the screen.
119
133
    """
120
 
    
 
134
 
 
135
    _sizing = frozenset(["flow"])
 
136
 
121
137
    def __init__(self, server_proxy_object=None, update_hook=None,
122
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
138
                 delete_hook=None, **kwargs):
123
139
        # Called on update
124
140
        self.update_hook = update_hook
125
141
        # Called on delete
126
142
        self.delete_hook = delete_hook
127
143
        # Mandos Server proxy object
128
144
        self.server_proxy_object = server_proxy_object
129
 
        # Logger
130
 
        self.logger = logger
131
 
        
 
145
 
132
146
        self._update_timer_callback_tag = None
133
 
        self._update_timer_callback_lock = 0
134
 
        self.last_checker_failed = False
135
 
        
 
147
 
136
148
        # The widget shown normally
137
149
        self._text_widget = urwid.Text("")
138
150
        # The widget shown when we have focus
139
151
        self._focus_text_widget = urwid.Text("")
140
 
        super(MandosClientWidget, self).__init__(
141
 
            update_hook=update_hook, delete_hook=delete_hook,
142
 
            *args, **kwargs)
 
152
        super(MandosClientWidget, self).__init__(**kwargs)
143
153
        self.update()
144
154
        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
 
        
 
155
 
164
156
        self.match_objects = (
165
157
            self.proxy.connect_to_signal("CheckerCompleted",
166
158
                                         self.checker_completed,
182
174
                                         self.rejected,
183
175
                                         client_interface,
184
176
                                         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
 
        
 
177
        log.debug("Created client %s", self.properties["Name"])
 
178
 
193
179
    def using_timer(self, flag):
194
180
        """Call this method with True or False when timer should be
195
181
        activated or deactivated.
196
182
        """
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:
 
183
        if flag and self._update_timer_callback_tag is None:
203
184
            # Will update the shown timer value every second
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)
 
185
            self._update_timer_callback_tag = (
 
186
                GLib.timeout_add(1000,
 
187
                                 glib_safely(self.update_timer)))
 
188
        elif not (flag or self._update_timer_callback_tag is None):
 
189
            GLib.source_remove(self._update_timer_callback_tag)
209
190
            self._update_timer_callback_tag = None
210
 
    
 
191
 
211
192
    def checker_completed(self, exitstatus, condition, command):
212
193
        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))
 
194
            log.debug('Checker for client %s (command "%s")'
 
195
                      " succeeded", self.properties["Name"], command)
219
196
            self.update()
220
197
            return
221
198
        # Checker failed
222
 
        if not self.last_checker_failed:
223
 
            self.last_checker_failed = True
224
 
            self.using_timer(True)
225
199
        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)))
 
200
            log.info('Checker for client %s (command "%s") failed'
 
201
                     " with exit code %d", self.properties["Name"],
 
202
                     command, os.WEXITSTATUS(condition))
230
203
        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')
 
204
            log.info('Checker for client %s (command "%s") was'
 
205
                     " killed by signal %d", self.properties["Name"],
 
206
                     command, os.WTERMSIG(condition))
242
207
        self.update()
243
 
    
 
208
 
244
209
    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
 
    
 
210
        """Server signals that a checker started."""
 
211
        log.debug('Client %s started checker "%s"',
 
212
                  self.properties["Name"], command)
 
213
 
251
214
    def got_secret(self):
252
 
        self.last_checker_failed = False
253
 
        self.logger('Client %s received its secret'
254
 
                    % self.properties["Name"])
255
 
    
 
215
        log.info("Client %s received its secret",
 
216
                 self.properties["Name"])
 
217
 
256
218
    def need_approval(self, timeout, default):
257
219
        if not default:
258
 
            message = 'Client %s needs approval within %s seconds'
 
220
            message = "Client %s needs approval within %f seconds"
259
221
        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
 
    
 
222
            message = "Client %s will get its secret in %f seconds"
 
223
        log.info(message, self.properties["Name"], timeout/1000)
 
224
 
265
225
    def rejected(self, reason):
266
 
        self.logger('Client %s was rejected; reason: %s'
267
 
                    % (self.properties["Name"], reason))
268
 
    
 
226
        log.info("Client %s was rejected; reason: %s",
 
227
                 self.properties["Name"], reason)
 
228
 
269
229
    def selectable(self):
270
230
        """Make this a "selectable" widget.
271
 
        This overrides the method from urwid.FlowWidget."""
 
231
        This overrides the method from urwid.Widget."""
272
232
        return True
273
 
    
 
233
 
274
234
    def rows(self, maxcolrow, focus=False):
275
235
        """How many rows this widget will occupy might depend on
276
236
        whether we have focus or not.
277
 
        This overrides the method from urwid.FlowWidget"""
 
237
        This overrides the method from urwid.Widget"""
278
238
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
279
 
    
 
239
 
280
240
    def current_widget(self, focus=False):
281
241
        if focus or self.opened:
282
242
            return self._focus_widget
283
243
        return self._widget
284
 
    
 
244
 
285
245
    def update(self):
286
246
        "Called when what is visible on the screen should be updated."
287
247
        # 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
 
                          }
 
248
        with_standout = {"normal": "standout",
 
249
                         "bold": "bold-standout",
 
250
                         "underline-blink":
 
251
                         "underline-blink-standout",
 
252
                         "bold-underline-blink":
 
253
                         "bold-underline-blink-standout",
 
254
                         }
295
255
 
296
256
        # Rebuild focus and non-focus widgets using current properties
297
257
 
298
258
        # Base part of a client. Name!
299
 
        base = ('%(name)s: '
300
 
                      % {"name": self.properties["Name"]})
 
259
        base = "{name}: ".format(name=self.properties["Name"])
301
260
        if not self.properties["Enabled"]:
302
261
            message = "DISABLED"
 
262
            self.using_timer(False)
303
263
        elif self.properties["ApprovalPending"]:
304
 
            timeout = datetime.timedelta(milliseconds
305
 
                                         = self.properties
306
 
                                         ["ApprovalDelay"])
 
264
            timeout = datetime.timedelta(
 
265
                milliseconds=self.properties["ApprovalDelay"])
307
266
            last_approval_request = isoformat_to_datetime(
308
267
                self.properties["LastApprovalRequest"])
309
268
            if last_approval_request is not None:
310
 
                timer = timeout - (datetime.datetime.utcnow()
311
 
                                   - last_approval_request)
 
269
                timer = max(timeout - (datetime.datetime.utcnow()
 
270
                                       - last_approval_request),
 
271
                            datetime.timedelta())
312
272
            else:
313
273
                timer = datetime.timedelta()
314
274
            if self.properties["ApprovedByDefault"]:
315
 
                message = "Approval in %s. (d)eny?"
 
275
                message = "Approval in {}. (d)eny?"
316
276
            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
 
277
                message = "Denial in {}. (a)pprove?"
 
278
            message = message.format(str(timer).rsplit(".", 1)[0])
 
279
            self.using_timer(True)
 
280
        elif self.properties["LastCheckerStatus"] != 0:
 
281
            # When checker has failed, show timer until client expires
321
282
            expires = self.properties["Expires"]
322
283
            if expires == "":
323
284
                timer = datetime.timedelta(0)
324
285
            else:
325
 
                expires = datetime.datetime.strptime(expires,
326
 
                                                     '%Y-%m-%dT%H:%M:%S.%f')
327
 
                timer = expires - datetime.datetime.utcnow()
328
 
            message = ('A checker has failed! Time until client'
329
 
                       ' gets disabled: %s'
330
 
                           % unicode(timer).rsplit(".", 1)[0])
 
286
                expires = (datetime.datetime.strptime
 
287
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
 
288
                timer = max(expires - datetime.datetime.utcnow(),
 
289
                            datetime.timedelta())
 
290
            message = ("A checker has failed! Time until client"
 
291
                       " gets disabled: {}"
 
292
                       .format(str(timer).rsplit(".", 1)[0]))
 
293
            self.using_timer(True)
331
294
        else:
332
295
            message = "enabled"
333
 
        self._text = "%s%s" % (base, message)
334
 
            
 
296
            self.using_timer(False)
 
297
        self._text = "{}{}".format(base, message)
 
298
 
335
299
        if not urwid.supports_unicode():
336
300
            self._text = self._text.encode("ascii", "replace")
337
301
        textlist = [("normal", self._text)]
347
311
        # Run update hook, if any
348
312
        if self.update_hook is not None:
349
313
            self.update_hook()
350
 
    
 
314
 
351
315
    def update_timer(self):
352
 
        """called by gobject. Will indefinitely loop until
353
 
        gobject.source_remove() on tag is called"""
 
316
        """called by GLib. Will indefinitely loop until
 
317
        GLib.source_remove() on tag is called
 
318
        """
354
319
        self.update()
355
320
        return True             # Keep calling this
356
 
    
357
 
    def delete(self, *args, **kwargs):
 
321
 
 
322
    def delete(self, **kwargs):
358
323
        if self._update_timer_callback_tag is not None:
359
 
            gobject.source_remove(self._update_timer_callback_tag)
 
324
            GLib.source_remove(self._update_timer_callback_tag)
360
325
            self._update_timer_callback_tag = None
361
326
        for match in self.match_objects:
362
327
            match.remove()
363
328
        self.match_objects = ()
364
329
        if self.delete_hook is not None:
365
330
            self.delete_hook(self)
366
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
367
 
    
 
331
        return super(MandosClientWidget, self).delete(**kwargs)
 
332
 
368
333
    def render(self, maxcolrow, focus=False):
369
334
        """Render differently if we have focus.
370
 
        This overrides the method from urwid.FlowWidget"""
 
335
        This overrides the method from urwid.Widget"""
371
336
        return self.current_widget(focus).render(maxcolrow,
372
337
                                                 focus=focus)
373
 
    
 
338
 
374
339
    def keypress(self, maxcolrow, key):
375
340
        """Handle keys.
376
 
        This overrides the method from urwid.FlowWidget"""
 
341
        This overrides the method from urwid.Widget"""
377
342
        if key == "+":
378
 
            self.proxy.Enable(dbus_interface = client_interface,
379
 
                              ignore_reply=True)
 
343
            self.proxy.Set(client_interface, "Enabled",
 
344
                           dbus.Boolean(True), ignore_reply=True,
 
345
                           dbus_interface=dbus.PROPERTIES_IFACE)
380
346
        elif key == "-":
381
 
            self.proxy.Disable(dbus_interface = client_interface,
382
 
                               ignore_reply=True)
 
347
            self.proxy.Set(client_interface, "Enabled", False,
 
348
                           ignore_reply=True,
 
349
                           dbus_interface=dbus.PROPERTIES_IFACE)
383
350
        elif key == "a":
384
351
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
385
 
                               dbus_interface = client_interface,
 
352
                               dbus_interface=client_interface,
386
353
                               ignore_reply=True)
387
354
        elif key == "d":
388
355
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
389
 
                                  dbus_interface = client_interface,
 
356
                               dbus_interface=client_interface,
390
357
                               ignore_reply=True)
391
358
        elif key == "R" or key == "_" or key == "ctrl k":
392
359
            self.server_proxy_object.RemoveClient(self.proxy
393
360
                                                  .object_path,
394
361
                                                  ignore_reply=True)
395
362
        elif key == "s":
396
 
            self.proxy.StartChecker(dbus_interface = client_interface,
397
 
                                    ignore_reply=True)
 
363
            self.proxy.Set(client_interface, "CheckerRunning",
 
364
                           dbus.Boolean(True), ignore_reply=True,
 
365
                           dbus_interface=dbus.PROPERTIES_IFACE)
398
366
        elif key == "S":
399
 
            self.proxy.StopChecker(dbus_interface = client_interface,
400
 
                                   ignore_reply=True)
 
367
            self.proxy.Set(client_interface, "CheckerRunning",
 
368
                           dbus.Boolean(False), ignore_reply=True,
 
369
                           dbus_interface=dbus.PROPERTIES_IFACE)
401
370
        elif key == "C":
402
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
371
            self.proxy.CheckedOK(dbus_interface=client_interface,
403
372
                                 ignore_reply=True)
404
373
        # xxx
405
374
#         elif key == "p" or key == "=":
410
379
#             self.open()
411
380
        else:
412
381
            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.
 
382
 
 
383
    def properties_changed(self, interface, properties, invalidated):
 
384
        """Call self.update() if any properties changed.
417
385
        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:
 
386
        old_values = {key: self.properties.get(key)
 
387
                      for key in properties.keys()}
 
388
        super(MandosClientWidget, self).properties_changed(
 
389
            interface, properties, invalidated)
 
390
        if any(old_values[key] != self.properties.get(key)
 
391
               for key in old_values):
423
392
            self.update()
424
393
 
425
394
 
 
395
def glib_safely(func, retval=True):
 
396
    def safe_func(*args, **kwargs):
 
397
        try:
 
398
            return func(*args, **kwargs)
 
399
        except Exception:
 
400
            log.exception("")
 
401
            return retval
 
402
    return safe_func
 
403
 
 
404
 
426
405
class ConstrainedListBox(urwid.ListBox):
427
406
    """Like a normal urwid.ListBox, but will consume all "up" or
428
407
    "down" key presses, thus not allowing any containing widgets to
429
408
    use them as an excuse to shift focus away from this widget.
430
409
    """
431
 
    def keypress(self, maxcolrow, key):
432
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
 
410
    def keypress(self, *args, **kwargs):
 
411
        ret = (super(ConstrainedListBox, self)
 
412
               .keypress(*args, **kwargs))
433
413
        if ret in ("up", "down"):
434
414
            return
435
415
        return ret
436
416
 
437
417
 
438
 
class UserInterface(object):
 
418
class UserInterface:
439
419
    """This is the entire user interface - the whole screen
440
420
    with boxes, lists of client widgets, etc.
441
421
    """
442
422
    def __init__(self, max_log_length=1000):
443
423
        DBusGMainLoop(set_as_default=True)
444
 
        
 
424
 
445
425
        self.screen = urwid.curses_display.Screen()
446
 
        
 
426
 
447
427
        self.screen.register_palette((
448
428
                ("normal",
449
429
                 "default", "default", None),
450
430
                ("bold",
451
 
                 "default", "default", "bold"),
 
431
                 "bold", "default", "bold"),
452
432
                ("underline-blink",
453
 
                 "default", "default", "underline"),
 
433
                 "underline,blink", "default", "underline,blink"),
454
434
                ("standout",
455
 
                 "default", "default", "standout"),
 
435
                 "standout", "default", "standout"),
456
436
                ("bold-underline-blink",
457
 
                 "default", "default", ("bold", "underline")),
 
437
                 "bold,underline,blink", "default",
 
438
                 "bold,underline,blink"),
458
439
                ("bold-standout",
459
 
                 "default", "default", ("bold", "standout")),
 
440
                 "bold,standout", "default", "bold,standout"),
460
441
                ("underline-blink-standout",
461
 
                 "default", "default", ("underline", "standout")),
 
442
                 "underline,blink,standout", "default",
 
443
                 "underline,blink,standout"),
462
444
                ("bold-underline-blink-standout",
463
 
                 "default", "default", ("bold", "underline",
464
 
                                          "standout")),
 
445
                 "bold,underline,blink,standout", "default",
 
446
                 "bold,underline,blink,standout"),
465
447
                ))
466
 
        
 
448
 
467
449
        if urwid.supports_unicode():
468
 
            self.divider = "─" # \u2500
469
 
            #self.divider = "━" # \u2501
 
450
            self.divider = "─"  # \u2500
470
451
        else:
471
 
            #self.divider = "-" # \u002d
472
 
            self.divider = "_" # \u005f
473
 
        
 
452
            self.divider = "_"  # \u005f
 
453
 
474
454
        self.screen.start()
475
 
        
 
455
 
476
456
        self.size = self.screen.get_cols_rows()
477
 
        
 
457
 
478
458
        self.clients = urwid.SimpleListWalker([])
479
459
        self.clients_dict = {}
480
 
        
 
460
 
481
461
        # We will add Text widgets to this list
482
 
        self.log = []
 
462
        self.log = urwid.SimpleListWalker([])
483
463
        self.max_log_length = max_log_length
484
 
        
 
464
 
485
465
        # We keep a reference to the log widget so we can remove it
486
466
        # from the ListWalker without it getting destroyed
487
467
        self.logbox = ConstrainedListBox(self.log)
488
 
        
 
468
 
489
469
        # This keeps track of whether self.uilist currently has
490
470
        # self.logbox in it or not
491
471
        self.log_visible = True
492
472
        self.log_wrap = "any"
493
 
        
 
473
 
 
474
        self.loghandler = UILogHandler(self)
 
475
 
494
476
        self.rebuild()
495
 
        self.log_message_raw(("bold",
496
 
                              "Mandos Monitor version " + version))
497
 
        self.log_message_raw(("bold",
498
 
                              "q: Quit  ?: Help"))
499
 
        
500
 
        self.busname = domain + '.Mandos'
501
 
        self.main_loop = gobject.MainLoop()
502
 
    
503
 
    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
 
    
 
477
        self.add_log_line(("bold",
 
478
                           "Mandos Monitor version " + version))
 
479
        self.add_log_line(("bold", "q: Quit  ?: Help"))
 
480
 
 
481
        self.busname = domain + ".Mandos"
 
482
        self.main_loop = GLib.MainLoop()
 
483
 
 
484
    def client_not_found(self, key_id, address):
 
485
        log.info("Client with address %s and key ID %s could"
 
486
                 " not be found", address, key_id)
 
487
 
508
488
    def rebuild(self):
509
489
        """This rebuilds the User Interface.
510
490
        Call this when the widget layout needs to change"""
511
491
        self.uilist = []
512
 
        #self.uilist.append(urwid.ListBox(self.clients))
 
492
        # self.uilist.append(urwid.ListBox(self.clients))
513
493
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
514
494
                                                          clients),
515
 
                                       #header=urwid.Divider(),
 
495
                                       # header=urwid.Divider(),
516
496
                                       header=None,
517
 
                                       footer=
518
 
                                       urwid.Divider(div_char=
519
 
                                                     self.divider)))
 
497
                                       footer=urwid.Divider(
 
498
                                           div_char=self.divider)))
520
499
        if self.log_visible:
521
500
            self.uilist.append(self.logbox)
522
501
        self.topwidget = urwid.Pile(self.uilist)
523
 
    
524
 
    def log_message(self, message):
525
 
        timestamp = datetime.datetime.now().isoformat()
526
 
        self.log_message_raw(timestamp + ": " + message)
527
 
    
528
 
    def log_message_raw(self, markup):
529
 
        """Add a log message to the log buffer."""
 
502
 
 
503
    def add_log_line(self, markup):
530
504
        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),
 
505
        if self.max_log_length:
 
506
            if len(self.log) > self.max_log_length:
 
507
                del self.log[0:(len(self.log) - self.max_log_length)]
 
508
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
535
509
                              coming_from="above")
536
510
        self.refresh()
537
 
    
 
511
 
538
512
    def toggle_log_display(self):
539
513
        """Toggle visibility of the log buffer."""
540
514
        self.log_visible = not self.log_visible
541
515
        self.rebuild()
542
 
        #self.log_message("Log visibility changed to: "
543
 
        #                 + unicode(self.log_visible))
544
 
    
 
516
        log.debug("Log visibility changed to: %s", self.log_visible)
 
517
 
545
518
    def change_log_display(self):
546
519
        """Change type of log display.
547
520
        Currently, this toggles wrapping of text lines."""
551
524
            self.log_wrap = "clip"
552
525
        for textwidget in self.log:
553
526
            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):
 
527
        log.debug("Wrap mode: %s", self.log_wrap)
 
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
            log.warning("Unknown client %s removed", path)
567
542
            return
568
543
        client.delete()
569
 
    
570
 
    def add_new_client(self, path):
 
544
 
 
545
    def add_new_client(self, path, ifs_and_props):
 
546
        """Find a client by its object path and remove it.
 
547
 
 
548
        This is connected to the InterfacesAdded signal from the
 
549
        Mandos server object.
 
550
        """
 
551
        if client_interface not in ifs_and_props:
 
552
            # Not a Mandos client object; ignore
 
553
            return
571
554
        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),
 
555
        self.add_client(MandosClientWidget(
 
556
            server_proxy_object=self.mandos_serv,
 
557
            proxy_object=client_proxy_object,
 
558
            update_hook=self.refresh,
 
559
            delete_hook=self.remove_client,
 
560
            properties=dict(ifs_and_props[client_interface])),
582
561
                        path=path)
583
 
    
 
562
 
584
563
    def add_client(self, client, path=None):
585
564
        self.clients.append(client)
586
565
        if path is None:
587
566
            path = client.proxy.object_path
588
567
        self.clients_dict[path] = client
589
 
        self.clients.sort(None, lambda c: c.properties["Name"])
 
568
        self.clients.sort(key=lambda c: c.properties["Name"])
590
569
        self.refresh()
591
 
    
 
570
 
592
571
    def remove_client(self, client, path=None):
593
572
        self.clients.remove(client)
594
573
        if path is None:
595
574
            path = client.proxy.object_path
596
575
        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
576
        self.refresh()
603
 
    
 
577
 
604
578
    def refresh(self):
605
579
        """Redraw the screen"""
606
580
        canvas = self.topwidget.render(self.size, focus=True)
607
581
        self.screen.draw_screen(self.size, canvas)
608
 
    
 
582
 
609
583
    def run(self):
610
584
        """Start the main loop and exit when it's done."""
 
585
        log.addHandler(self.loghandler)
 
586
        self.orig_log_propagate = log.propagate
 
587
        log.propagate = False
 
588
        self.orig_log_level = log.level
 
589
        log.setLevel("INFO")
611
590
        self.bus = dbus.SystemBus()
612
591
        mandos_dbus_objc = self.bus.get_object(
613
592
            self.busname, "/", follow_name_owner_changes=True)
614
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
615
 
                                          dbus_interface
616
 
                                          = server_interface)
 
593
        self.mandos_serv = dbus.Interface(
 
594
            mandos_dbus_objc, dbus_interface=server_interface)
617
595
        try:
618
596
            mandos_clients = (self.mandos_serv
619
597
                              .GetAllClientsWithProperties())
 
598
            if not mandos_clients:
 
599
                log.warning("Note: Server has no clients.")
620
600
        except dbus.exceptions.DBusException:
 
601
            log.warning("Note: No Mandos server running.")
621
602
            mandos_clients = dbus.Dictionary()
622
 
        
 
603
 
623
604
        (self.mandos_serv
624
 
         .connect_to_signal("ClientRemoved",
 
605
         .connect_to_signal("InterfacesRemoved",
625
606
                            self.find_and_remove_client,
626
 
                            dbus_interface=server_interface,
 
607
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
627
608
                            byte_arrays=True))
628
609
        (self.mandos_serv
629
 
         .connect_to_signal("ClientAdded",
 
610
         .connect_to_signal("InterfacesAdded",
630
611
                            self.add_new_client,
631
 
                            dbus_interface=server_interface,
 
612
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
632
613
                            byte_arrays=True))
633
614
        (self.mandos_serv
634
615
         .connect_to_signal("ClientNotFound",
635
616
                            self.client_not_found,
636
617
                            dbus_interface=server_interface,
637
618
                            byte_arrays=True))
638
 
        for path, client in mandos_clients.iteritems():
 
619
        for path, client in mandos_clients.items():
639
620
            client_proxy_object = self.bus.get_object(self.busname,
640
621
                                                      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),
 
622
            self.add_client(MandosClientWidget(
 
623
                server_proxy_object=self.mandos_serv,
 
624
                proxy_object=client_proxy_object,
 
625
                properties=client,
 
626
                update_hook=self.refresh,
 
627
                delete_hook=self.remove_client),
652
628
                            path=path)
653
629
 
654
630
        self.refresh()
655
 
        self._input_callback_tag = (gobject.io_add_watch
656
 
                                    (sys.stdin.fileno(),
657
 
                                     gobject.IO_IN,
658
 
                                     self.process_input))
 
631
        self._input_callback_tag = (
 
632
            GLib.io_add_watch(
 
633
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
 
634
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
635
                glib_safely(self.process_input)))
659
636
        self.main_loop.run()
660
637
        # Main loop has finished, we should close everything now
661
 
        gobject.source_remove(self._input_callback_tag)
662
 
        self.screen.stop()
663
 
    
 
638
        GLib.source_remove(self._input_callback_tag)
 
639
        with warnings.catch_warnings():
 
640
            warnings.simplefilter("ignore", BytesWarning)
 
641
            self.screen.stop()
 
642
 
664
643
    def stop(self):
665
644
        self.main_loop.quit()
666
 
    
 
645
        log.removeHandler(self.loghandler)
 
646
        log.propagate = self.orig_log_propagate
 
647
 
667
648
    def process_input(self, source, condition):
668
649
        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
 
                         }
 
650
        translations = {"ctrl n": "down",       # Emacs
 
651
                        "ctrl p": "up",         # Emacs
 
652
                        "ctrl v": "page down",  # Emacs
 
653
                        "meta v": "page up",    # Emacs
 
654
                        " ": "page down",       # less
 
655
                        "f": "page down",       # less
 
656
                        "b": "page up",         # less
 
657
                        "j": "down",            # vi
 
658
                        "k": "up",              # vi
 
659
                        }
679
660
        for key in keys:
680
661
            try:
681
662
                key = translations[key]
682
663
            except KeyError:    # :-)
683
664
                pass
684
 
            
 
665
 
685
666
            if key == "q" or key == "Q":
686
667
                self.stop()
687
668
                break
688
669
            elif key == "window resize":
689
670
                self.size = self.screen.get_cols_rows()
690
671
                self.refresh()
691
 
            elif key == "\f":  # Ctrl-L
 
672
            elif key == "ctrl l":
 
673
                self.screen.clear()
692
674
                self.refresh()
693
675
            elif key == "l" or key == "D":
694
676
                self.toggle_log_display()
700
682
                if not self.log_visible:
701
683
                    self.log_visible = True
702
684
                    self.rebuild()
703
 
                self.log_message_raw(("bold",
704
 
                                      "  ".
705
 
                                      join(("q: Quit",
706
 
                                            "?: Help",
707
 
                                            "l: Log window toggle",
708
 
                                            "TAB: Switch window",
709
 
                                            "w: Wrap (log)"))))
710
 
                self.log_message_raw(("bold",
711
 
                                      "  "
712
 
                                      .join(("Clients:",
713
 
                                             "+: Enable",
714
 
                                             "-: Disable",
715
 
                                             "R: Remove",
716
 
                                             "s: Start new checker",
717
 
                                             "S: Stop checker",
718
 
                                             "C: Checker OK",
719
 
                                             "a: Approve",
720
 
                                             "d: Deny"))))
 
685
                self.add_log_line(("bold",
 
686
                                   "  ".join(("q: Quit",
 
687
                                              "?: Help",
 
688
                                              "l: Log window toggle",
 
689
                                              "TAB: Switch window",
 
690
                                              "w: Wrap (log lines)",
 
691
                                              "v: Toggle verbose log",
 
692
                                   ))))
 
693
                self.add_log_line(("bold",
 
694
                                   "  ".join(("Clients:",
 
695
                                              "+: Enable",
 
696
                                              "-: Disable",
 
697
                                              "R: Remove",
 
698
                                              "s: Start new checker",
 
699
                                              "S: Stop checker",
 
700
                                              "C: Checker OK",
 
701
                                              "a: Approve",
 
702
                                              "d: Deny",
 
703
                                   ))))
721
704
                self.refresh()
722
705
            elif key == "tab":
723
706
                if self.topwidget.get_focus() is self.logbox:
725
708
                else:
726
709
                    self.topwidget.set_focus(self.logbox)
727
710
                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
 
711
            elif key == "v":
 
712
                if log.level < logging.INFO:
 
713
                    log.setLevel(logging.INFO)
 
714
                    log.info("Verbose mode: Off")
 
715
                else:
 
716
                    log.setLevel(logging.NOTSET)
 
717
                    log.info("Verbose mode: On")
 
718
            # elif (key == "end" or key == "meta >" or key == "G"
 
719
            #       or key == ">"):
 
720
            #     pass            # xxx end-of-buffer
 
721
            # elif (key == "home" or key == "meta <" or key == "g"
 
722
            #       or key == "<"):
 
723
            #     pass            # xxx beginning-of-buffer
 
724
            # elif key == "ctrl e" or key == "$":
 
725
            #     pass            # xxx move-end-of-line
 
726
            # elif key == "ctrl a" or key == "^":
 
727
            #     pass            # xxx move-beginning-of-line
 
728
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
729
            #     pass            # xxx left
 
730
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
731
            #     pass            # xxx right
 
732
            # elif key == "a":
 
733
            #     pass            # scroll up log
 
734
            # elif key == "z":
 
735
            #     pass            # scroll down log
746
736
            elif self.topwidget.selectable():
747
737
                self.topwidget.keypress(self.size, key)
748
738
                self.refresh()
749
739
        return True
750
740
 
 
741
 
 
742
class UILogHandler(logging.Handler):
 
743
    def __init__(self, ui, *args, **kwargs):
 
744
        self.ui = ui
 
745
        super(UILogHandler, self).__init__(*args, **kwargs)
 
746
        self.setFormatter(
 
747
            logging.Formatter("%(asctime)s: %(message)s"))
 
748
    def emit(self, record):
 
749
        msg = self.format(record)
 
750
        if record.levelno > logging.INFO:
 
751
            msg = ("bold", msg)
 
752
        self.ui.add_log_line(msg)
 
753
 
 
754
 
751
755
ui = UserInterface()
752
756
try:
753
757
    ui.run()
754
758
except KeyboardInterrupt:
755
 
    ui.screen.stop()
756
 
except Exception, e:
757
 
    ui.log_message(unicode(e))
758
 
    ui.screen.stop()
 
759
    with warnings.catch_warnings():
 
760
        warnings.filterwarnings("ignore", "", BytesWarning)
 
761
        ui.screen.stop()
 
762
except Exception:
 
763
    with warnings.catch_warnings():
 
764
        warnings.filterwarnings("ignore", "", BytesWarning)
 
765
        ui.screen.stop()
759
766
    raise