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  • Committer: Teddy Hogeborn
  • Date: 2024-11-22 20:28:54 UTC
  • Revision ID: teddy@recompile.se-20241122202854-dycuf117byxhxl32
mandos-monitor: Avoid debug messages from urwid

Avoid debug messages from urwid.  Any logging output before the screen
has been set up will mangle the screen.

* mandos-monitor: When setting up logging, set urwid to only show log
  messages of level INFO or above.

(Thanks to an anonymous contributor for reporting this.)

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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 © 2009,2010 Teddy Hogeborn
7
 
# Copyright © 2009,2010 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
 
# Contact the authors at <mandos@fukt.bsnet.se>.
23
 
 
22
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
23
#
 
24
# Contact the authors at <mandos@recompile.se>.
 
25
#
 
26
from __future__ import (division, absolute_import, print_function,
 
27
                        unicode_literals)
24
28
 
25
 
from __future__ import division, absolute_import, print_function, unicode_literals
 
29
try:
 
30
    from future_builtins import *
 
31
except ImportError:
 
32
    pass
26
33
 
27
34
import sys
 
35
import logging
28
36
import os
29
 
import signal
30
 
 
 
37
import warnings
31
38
import datetime
 
39
import locale
32
40
 
33
41
import urwid.curses_display
34
42
import urwid
35
43
 
36
44
from dbus.mainloop.glib import DBusGMainLoop
37
 
import gobject
 
45
from gi.repository import GLib
38
46
 
39
47
import dbus
40
48
 
41
 
import UserList
42
 
 
43
 
import locale
44
 
 
45
 
locale.setlocale(locale.LC_ALL, '')
46
 
 
47
 
import logging
48
 
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)
49
68
 
50
69
# Some useful constants
51
 
domain = 'se.bsnet.fukt'
52
 
server_interface = domain + '.Mandos'
53
 
client_interface = domain + '.Mandos.Client'
54
 
version = "1.2.3"
55
 
 
56
 
# Always run in monochrome mode
57
 
urwid.curses_display.curses.has_colors = lambda : False
58
 
 
59
 
# Urwid doesn't support blinking, but we want it.  Since we have no
60
 
# use for underline on its own, we make underline also always blink.
61
 
urwid.curses_display.curses.A_UNDERLINE |= (
62
 
    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
 
63
80
 
64
81
def isoformat_to_datetime(iso):
65
82
    "Parse an ISO 8601 date string to a datetime.datetime()"
74
91
                             int(day),
75
92
                             int(hour),
76
93
                             int(minute),
77
 
                             int(second),           # Whole seconds
78
 
                             int(fraction*1000000)) # Microseconds
79
 
 
80
 
class MandosClientPropertyCache(object):
 
94
                             int(second),            # Whole seconds
 
95
                             int(fraction*1000000))  # Microseconds
 
96
 
 
97
 
 
98
class MandosClientPropertyCache:
81
99
    """This wraps a Mandos Client D-Bus proxy object, caches the
82
100
    properties and calls a hook function when any of them are
83
101
    changed.
84
102
    """
85
 
    def __init__(self, proxy_object=None, *args, **kwargs):
86
 
        self.proxy = proxy_object # Mandos Client proxy object
87
 
        
88
 
        self.properties = dict()
89
 
        self.proxy.connect_to_signal("PropertyChanged",
90
 
                                     self.property_changed,
91
 
                                     client_interface,
92
 
                                     byte_arrays=True)
93
 
        
94
 
        self.properties.update(
95
 
            self.proxy.GetAll(client_interface,
96
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
97
 
 
98
 
        #XXX This break good super behaviour!
99
 
#        super(MandosClientPropertyCache, self).__init__(
100
 
#            *args, **kwargs)
101
 
    
102
 
    def property_changed(self, property=None, value=None):
103
 
        """This is called whenever we get a PropertyChanged signal
104
 
        It updates the changed property in the "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
 
106
        self.property_changed_match = (
 
107
            self.proxy.connect_to_signal("PropertiesChanged",
 
108
                                         self.properties_changed,
 
109
                                         dbus.PROPERTIES_IFACE,
 
110
                                         byte_arrays=True))
 
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.
105
122
        """
106
123
        # Update properties dict with new value
107
 
        self.properties[property] = value
 
124
        if interface == client_interface:
 
125
            self.properties.update(properties)
 
126
 
 
127
    def delete(self):
 
128
        self.property_changed_match.remove()
108
129
 
109
130
 
110
131
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
111
132
    """A Mandos Client which is visible on the screen.
112
133
    """
113
 
    
 
134
 
114
135
    def __init__(self, server_proxy_object=None, update_hook=None,
115
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
136
                 delete_hook=None, **kwargs):
116
137
        # Called on update
117
138
        self.update_hook = update_hook
118
139
        # Called on delete
119
140
        self.delete_hook = delete_hook
120
141
        # Mandos Server proxy object
121
142
        self.server_proxy_object = server_proxy_object
122
 
        # Logger
123
 
        self.logger = logger
124
 
        
 
143
 
125
144
        self._update_timer_callback_tag = None
126
 
        self._update_timer_callback_lock = 0
127
 
        self.last_checker_failed = False
128
 
        
 
145
 
129
146
        # The widget shown normally
130
147
        self._text_widget = urwid.Text("")
131
148
        # The widget shown when we have focus
132
149
        self._focus_text_widget = urwid.Text("")
133
 
        super(MandosClientWidget, self).__init__(
134
 
            update_hook=update_hook, delete_hook=delete_hook,
135
 
            *args, **kwargs)
 
150
        super(MandosClientWidget, self).__init__(**kwargs)
136
151
        self.update()
137
152
        self.opened = False
138
 
        
139
 
        last_checked_ok = isoformat_to_datetime(self.properties
140
 
                                                ["LastCheckedOK"])
141
 
        if last_checked_ok is None:
142
 
            self.last_checker_failed = True
143
 
        else:
144
 
            self.last_checker_failed = ((datetime.datetime.utcnow()
145
 
                                         - last_checked_ok)
146
 
                                        > datetime.timedelta
147
 
                                        (milliseconds=
148
 
                                         self.properties
149
 
                                         ["Interval"]))
150
 
        
151
 
        if self.last_checker_failed:
152
 
            self.using_timer(True)
153
 
        
154
 
        if self.need_approval:
155
 
            self.using_timer(True)
156
 
        
157
 
        self.proxy.connect_to_signal("CheckerCompleted",
158
 
                                     self.checker_completed,
159
 
                                     client_interface,
160
 
                                     byte_arrays=True)
161
 
        self.proxy.connect_to_signal("CheckerStarted",
162
 
                                     self.checker_started,
163
 
                                     client_interface,
164
 
                                     byte_arrays=True)
165
 
        self.proxy.connect_to_signal("GotSecret",
166
 
                                     self.got_secret,
167
 
                                     client_interface,
168
 
                                     byte_arrays=True)
169
 
        self.proxy.connect_to_signal("NeedApproval",
170
 
                                     self.need_approval,
171
 
                                     client_interface,
172
 
                                     byte_arrays=True)
173
 
        self.proxy.connect_to_signal("Rejected",
174
 
                                     self.rejected,
175
 
                                     client_interface,
176
 
                                     byte_arrays=True)
177
 
    
178
 
    def property_changed(self, property=None, value=None):
179
 
        super(self, MandosClientWidget).property_changed(property,
180
 
                                                         value)
181
 
        if property == "ApprovalPending":
182
 
            using_timer(bool(value))
183
 
        
 
153
 
 
154
        self.match_objects = (
 
155
            self.proxy.connect_to_signal("CheckerCompleted",
 
156
                                         self.checker_completed,
 
157
                                         client_interface,
 
158
                                         byte_arrays=True),
 
159
            self.proxy.connect_to_signal("CheckerStarted",
 
160
                                         self.checker_started,
 
161
                                         client_interface,
 
162
                                         byte_arrays=True),
 
163
            self.proxy.connect_to_signal("GotSecret",
 
164
                                         self.got_secret,
 
165
                                         client_interface,
 
166
                                         byte_arrays=True),
 
167
            self.proxy.connect_to_signal("NeedApproval",
 
168
                                         self.need_approval,
 
169
                                         client_interface,
 
170
                                         byte_arrays=True),
 
171
            self.proxy.connect_to_signal("Rejected",
 
172
                                         self.rejected,
 
173
                                         client_interface,
 
174
                                         byte_arrays=True))
 
175
        log.debug("Created client %s", self.properties["Name"])
 
176
 
184
177
    def using_timer(self, flag):
185
178
        """Call this method with True or False when timer should be
186
179
        activated or deactivated.
187
180
        """
188
 
        old = self._update_timer_callback_lock
189
 
        if flag:
190
 
            self._update_timer_callback_lock += 1
191
 
        else:
192
 
            self._update_timer_callback_lock -= 1
193
 
        if old == 0 and self._update_timer_callback_lock:
194
 
            self._update_timer_callback_tag = (gobject.timeout_add
195
 
                                               (1000,
196
 
                                                self.update_timer))
197
 
        elif old and self._update_timer_callback_lock == 0:
198
 
            gobject.source_remove(self._update_timer_callback_tag)
 
181
        if flag and self._update_timer_callback_tag is None:
 
182
            # Will update the shown timer value every second
 
183
            self._update_timer_callback_tag = (
 
184
                GLib.timeout_add(1000,
 
185
                                 glib_safely(self.update_timer)))
 
186
        elif not (flag or self._update_timer_callback_tag is None):
 
187
            GLib.source_remove(self._update_timer_callback_tag)
199
188
            self._update_timer_callback_tag = None
200
 
    
 
189
 
201
190
    def checker_completed(self, exitstatus, condition, command):
202
191
        if exitstatus == 0:
203
 
            if self.last_checker_failed:
204
 
                self.last_checker_failed = False
205
 
                self.using_timer(False)
206
 
            #self.logger('Checker for client %s (command "%s")'
207
 
            #            ' was successful'
208
 
            #            % (self.properties["Name"], command))
 
192
            log.debug('Checker for client %s (command "%s")'
 
193
                      " succeeded", self.properties["Name"], command)
209
194
            self.update()
210
195
            return
211
196
        # Checker failed
212
 
        if not self.last_checker_failed:
213
 
            self.last_checker_failed = True
214
 
            self.using_timer(True)
215
197
        if os.WIFEXITED(condition):
216
 
            self.logger('Checker for client %s (command "%s")'
217
 
                        ' failed with exit code %s'
218
 
                        % (self.properties["Name"], command,
219
 
                           os.WEXITSTATUS(condition)))
 
198
            log.info('Checker for client %s (command "%s") failed'
 
199
                     " with exit code %d", self.properties["Name"],
 
200
                     command, os.WEXITSTATUS(condition))
220
201
        elif os.WIFSIGNALED(condition):
221
 
            self.logger('Checker for client %s (command "%s")'
222
 
                        ' was killed by signal %s'
223
 
                        % (self.properties["Name"], command,
224
 
                           os.WTERMSIG(condition)))
225
 
        elif os.WCOREDUMP(condition):
226
 
            self.logger('Checker for client %s (command "%s")'
227
 
                        ' dumped core'
228
 
                        % (self.properties["Name"], command))
229
 
        else:
230
 
            self.logger('Checker for client %s completed'
231
 
                        ' mysteriously')
 
202
            log.info('Checker for client %s (command "%s") was'
 
203
                     " killed by signal %d", self.properties["Name"],
 
204
                     command, os.WTERMSIG(condition))
232
205
        self.update()
233
 
    
 
206
 
234
207
    def checker_started(self, command):
235
 
        #self.logger('Client %s started checker "%s"'
236
 
        #            % (self.properties["Name"], unicode(command)))
237
 
        pass
238
 
    
 
208
        """Server signals that a checker started."""
 
209
        log.debug('Client %s started checker "%s"',
 
210
                  self.properties["Name"], command)
 
211
 
239
212
    def got_secret(self):
240
 
        self.last_checker_failed = False
241
 
        self.logger('Client %s received its secret'
242
 
                    % self.properties["Name"])
243
 
    
 
213
        log.info("Client %s received its secret",
 
214
                 self.properties["Name"])
 
215
 
244
216
    def need_approval(self, timeout, default):
245
217
        if not default:
246
 
            message = 'Client %s needs approval within %s seconds'
 
218
            message = "Client %s needs approval within %f seconds"
247
219
        else:
248
 
            message = 'Client %s will get its secret in %s seconds'
249
 
        self.logger(message
250
 
                    % (self.properties["Name"], timeout/1000))
251
 
        self.using_timer(True)
252
 
    
 
220
            message = "Client %s will get its secret in %f seconds"
 
221
        log.info(message, self.properties["Name"], timeout/1000)
 
222
 
253
223
    def rejected(self, reason):
254
 
        self.logger('Client %s was rejected; reason: %s'
255
 
                    % (self.properties["Name"], reason))
256
 
    
 
224
        log.info("Client %s was rejected; reason: %s",
 
225
                 self.properties["Name"], reason)
 
226
 
257
227
    def selectable(self):
258
228
        """Make this a "selectable" widget.
259
229
        This overrides the method from urwid.FlowWidget."""
260
230
        return True
261
 
    
 
231
 
262
232
    def rows(self, maxcolrow, focus=False):
263
233
        """How many rows this widget will occupy might depend on
264
234
        whether we have focus or not.
265
235
        This overrides the method from urwid.FlowWidget"""
266
236
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
267
 
    
 
237
 
268
238
    def current_widget(self, focus=False):
269
239
        if focus or self.opened:
270
240
            return self._focus_widget
271
241
        return self._widget
272
 
    
 
242
 
273
243
    def update(self):
274
244
        "Called when what is visible on the screen should be updated."
275
245
        # How to add standout mode to a style
276
 
        with_standout = { "normal": "standout",
277
 
                          "bold": "bold-standout",
278
 
                          "underline-blink":
279
 
                              "underline-blink-standout",
280
 
                          "bold-underline-blink":
281
 
                              "bold-underline-blink-standout",
282
 
                          }
 
246
        with_standout = {"normal": "standout",
 
247
                         "bold": "bold-standout",
 
248
                         "underline-blink":
 
249
                         "underline-blink-standout",
 
250
                         "bold-underline-blink":
 
251
                         "bold-underline-blink-standout",
 
252
                         }
283
253
 
284
254
        # Rebuild focus and non-focus widgets using current properties
285
255
 
286
256
        # Base part of a client. Name!
287
 
        base = ('%(name)s: '
288
 
                      % {"name": self.properties["Name"]})
 
257
        base = "{name}: ".format(name=self.properties["Name"])
289
258
        if not self.properties["Enabled"]:
290
259
            message = "DISABLED"
 
260
            self.using_timer(False)
291
261
        elif self.properties["ApprovalPending"]:
292
 
            timeout = datetime.timedelta(milliseconds
293
 
                                         = self.properties
294
 
                                         ["ApprovalDelay"])
 
262
            timeout = datetime.timedelta(
 
263
                milliseconds=self.properties["ApprovalDelay"])
295
264
            last_approval_request = isoformat_to_datetime(
296
265
                self.properties["LastApprovalRequest"])
297
266
            if last_approval_request is not None:
298
 
                timer = timeout - (datetime.datetime.utcnow()
299
 
                                   - last_approval_request)
 
267
                timer = max(timeout - (datetime.datetime.utcnow()
 
268
                                       - last_approval_request),
 
269
                            datetime.timedelta())
300
270
            else:
301
271
                timer = datetime.timedelta()
302
272
            if self.properties["ApprovedByDefault"]:
303
 
                message = "Approval in %s. (d)eny?"
304
 
            else:
305
 
                message = "Denial in %s. (a)pprove?"
306
 
            message = message % unicode(timer).rsplit(".", 1)[0]
307
 
        elif self.last_checker_failed:
308
 
            timeout = datetime.timedelta(milliseconds
309
 
                                         = self.properties
310
 
                                         ["Timeout"])
311
 
            last_ok = isoformat_to_datetime(
312
 
                max((self.properties["LastCheckedOK"]
313
 
                     or self.properties["Created"]),
314
 
                    self.properties["LastEnabled"]))
315
 
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
316
 
            message = ('A checker has failed! Time until client'
317
 
                       ' gets disabled: %s'
318
 
                           % unicode(timer).rsplit(".", 1)[0])
 
273
                message = "Approval in {}. (d)eny?"
 
274
            else:
 
275
                message = "Denial in {}. (a)pprove?"
 
276
            message = message.format(str(timer).rsplit(".", 1)[0])
 
277
            self.using_timer(True)
 
278
        elif self.properties["LastCheckerStatus"] != 0:
 
279
            # When checker has failed, show timer until client expires
 
280
            expires = self.properties["Expires"]
 
281
            if expires == "":
 
282
                timer = datetime.timedelta(0)
 
283
            else:
 
284
                expires = (datetime.datetime.strptime
 
285
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
 
286
                timer = max(expires - datetime.datetime.utcnow(),
 
287
                            datetime.timedelta())
 
288
            message = ("A checker has failed! Time until client"
 
289
                       " gets disabled: {}"
 
290
                       .format(str(timer).rsplit(".", 1)[0]))
 
291
            self.using_timer(True)
319
292
        else:
320
293
            message = "enabled"
321
 
        self._text = "%s%s" % (base, message)
322
 
            
 
294
            self.using_timer(False)
 
295
        self._text = "{}{}".format(base, message)
 
296
 
323
297
        if not urwid.supports_unicode():
324
298
            self._text = self._text.encode("ascii", "replace")
325
299
        textlist = [("normal", self._text)]
335
309
        # Run update hook, if any
336
310
        if self.update_hook is not None:
337
311
            self.update_hook()
338
 
    
 
312
 
339
313
    def update_timer(self):
340
 
        "called by gobject"
 
314
        """called by GLib. Will indefinitely loop until
 
315
        GLib.source_remove() on tag is called
 
316
        """
341
317
        self.update()
342
318
        return True             # Keep calling this
343
 
    
344
 
    def delete(self):
 
319
 
 
320
    def delete(self, **kwargs):
345
321
        if self._update_timer_callback_tag is not None:
346
 
            gobject.source_remove(self._update_timer_callback_tag)
 
322
            GLib.source_remove(self._update_timer_callback_tag)
347
323
            self._update_timer_callback_tag = None
 
324
        for match in self.match_objects:
 
325
            match.remove()
 
326
        self.match_objects = ()
348
327
        if self.delete_hook is not None:
349
328
            self.delete_hook(self)
350
 
    
 
329
        return super(MandosClientWidget, self).delete(**kwargs)
 
330
 
351
331
    def render(self, maxcolrow, focus=False):
352
332
        """Render differently if we have focus.
353
333
        This overrides the method from urwid.FlowWidget"""
354
334
        return self.current_widget(focus).render(maxcolrow,
355
335
                                                 focus=focus)
356
 
    
 
336
 
357
337
    def keypress(self, maxcolrow, key):
358
338
        """Handle keys.
359
339
        This overrides the method from urwid.FlowWidget"""
360
340
        if key == "+":
361
 
            self.proxy.Enable(dbus_interface = client_interface)
 
341
            self.proxy.Set(client_interface, "Enabled",
 
342
                           dbus.Boolean(True), ignore_reply=True,
 
343
                           dbus_interface=dbus.PROPERTIES_IFACE)
362
344
        elif key == "-":
363
 
            self.proxy.Disable(dbus_interface = client_interface)
 
345
            self.proxy.Set(client_interface, "Enabled", False,
 
346
                           ignore_reply=True,
 
347
                           dbus_interface=dbus.PROPERTIES_IFACE)
364
348
        elif key == "a":
365
349
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
366
 
                               dbus_interface = client_interface)
 
350
                               dbus_interface=client_interface,
 
351
                               ignore_reply=True)
367
352
        elif key == "d":
368
353
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
369
 
                                  dbus_interface = client_interface)
 
354
                               dbus_interface=client_interface,
 
355
                               ignore_reply=True)
370
356
        elif key == "R" or key == "_" or key == "ctrl k":
371
357
            self.server_proxy_object.RemoveClient(self.proxy
372
 
                                                  .object_path)
 
358
                                                  .object_path,
 
359
                                                  ignore_reply=True)
373
360
        elif key == "s":
374
 
            self.proxy.StartChecker(dbus_interface = client_interface)
 
361
            self.proxy.Set(client_interface, "CheckerRunning",
 
362
                           dbus.Boolean(True), ignore_reply=True,
 
363
                           dbus_interface=dbus.PROPERTIES_IFACE)
375
364
        elif key == "S":
376
 
            self.proxy.StopChecker(dbus_interface = client_interface)
 
365
            self.proxy.Set(client_interface, "CheckerRunning",
 
366
                           dbus.Boolean(False), ignore_reply=True,
 
367
                           dbus_interface=dbus.PROPERTIES_IFACE)
377
368
        elif key == "C":
378
 
            self.proxy.CheckedOK(dbus_interface = client_interface)
 
369
            self.proxy.CheckedOK(dbus_interface=client_interface,
 
370
                                 ignore_reply=True)
379
371
        # xxx
380
372
#         elif key == "p" or key == "=":
381
373
#             self.proxy.pause()
385
377
#             self.open()
386
378
        else:
387
379
            return key
388
 
    
389
 
    def property_changed(self, property=None, value=None,
390
 
                         *args, **kwargs):
391
 
        """Call self.update() if old value is not new value.
 
380
 
 
381
    def properties_changed(self, interface, properties, invalidated):
 
382
        """Call self.update() if any properties changed.
392
383
        This overrides the method from MandosClientPropertyCache"""
393
 
        property_name = unicode(property)
394
 
        old_value = self.properties.get(property_name)
395
 
        super(MandosClientWidget, self).property_changed(
396
 
            property=property, value=value, *args, **kwargs)
397
 
        if self.properties.get(property_name) != old_value:
 
384
        old_values = {key: self.properties.get(key)
 
385
                      for key in properties.keys()}
 
386
        super(MandosClientWidget, self).properties_changed(
 
387
            interface, properties, invalidated)
 
388
        if any(old_values[key] != self.properties.get(key)
 
389
               for key in old_values):
398
390
            self.update()
399
391
 
400
392
 
 
393
def glib_safely(func, retval=True):
 
394
    def safe_func(*args, **kwargs):
 
395
        try:
 
396
            return func(*args, **kwargs)
 
397
        except Exception:
 
398
            log.exception("")
 
399
            return retval
 
400
    return safe_func
 
401
 
 
402
 
401
403
class ConstrainedListBox(urwid.ListBox):
402
404
    """Like a normal urwid.ListBox, but will consume all "up" or
403
405
    "down" key presses, thus not allowing any containing widgets to
404
406
    use them as an excuse to shift focus away from this widget.
405
407
    """
406
 
    def keypress(self, maxcolrow, key):
407
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
 
408
    def keypress(self, *args, **kwargs):
 
409
        ret = (super(ConstrainedListBox, self)
 
410
               .keypress(*args, **kwargs))
408
411
        if ret in ("up", "down"):
409
412
            return
410
413
        return ret
411
414
 
412
415
 
413
 
class UserInterface(object):
 
416
class UserInterface:
414
417
    """This is the entire user interface - the whole screen
415
418
    with boxes, lists of client widgets, etc.
416
419
    """
417
420
    def __init__(self, max_log_length=1000):
418
421
        DBusGMainLoop(set_as_default=True)
419
 
        
 
422
 
420
423
        self.screen = urwid.curses_display.Screen()
421
 
        
 
424
 
422
425
        self.screen.register_palette((
423
426
                ("normal",
424
427
                 "default", "default", None),
425
428
                ("bold",
426
 
                 "default", "default", "bold"),
 
429
                 "bold", "default", "bold"),
427
430
                ("underline-blink",
428
 
                 "default", "default", "underline"),
 
431
                 "underline,blink", "default", "underline,blink"),
429
432
                ("standout",
430
 
                 "default", "default", "standout"),
 
433
                 "standout", "default", "standout"),
431
434
                ("bold-underline-blink",
432
 
                 "default", "default", ("bold", "underline")),
 
435
                 "bold,underline,blink", "default",
 
436
                 "bold,underline,blink"),
433
437
                ("bold-standout",
434
 
                 "default", "default", ("bold", "standout")),
 
438
                 "bold,standout", "default", "bold,standout"),
435
439
                ("underline-blink-standout",
436
 
                 "default", "default", ("underline", "standout")),
 
440
                 "underline,blink,standout", "default",
 
441
                 "underline,blink,standout"),
437
442
                ("bold-underline-blink-standout",
438
 
                 "default", "default", ("bold", "underline",
439
 
                                          "standout")),
 
443
                 "bold,underline,blink,standout", "default",
 
444
                 "bold,underline,blink,standout"),
440
445
                ))
441
 
        
 
446
 
442
447
        if urwid.supports_unicode():
443
 
            self.divider = "─" # \u2500
444
 
            #self.divider = "━" # \u2501
 
448
            self.divider = "─"  # \u2500
445
449
        else:
446
 
            #self.divider = "-" # \u002d
447
 
            self.divider = "_" # \u005f
448
 
        
 
450
            self.divider = "_"  # \u005f
 
451
 
449
452
        self.screen.start()
450
 
        
 
453
 
451
454
        self.size = self.screen.get_cols_rows()
452
 
        
 
455
 
453
456
        self.clients = urwid.SimpleListWalker([])
454
457
        self.clients_dict = {}
455
 
        
 
458
 
456
459
        # We will add Text widgets to this list
457
 
        self.log = []
 
460
        self.log = urwid.SimpleListWalker([])
458
461
        self.max_log_length = max_log_length
459
 
        
 
462
 
460
463
        # We keep a reference to the log widget so we can remove it
461
464
        # from the ListWalker without it getting destroyed
462
465
        self.logbox = ConstrainedListBox(self.log)
463
 
        
 
466
 
464
467
        # This keeps track of whether self.uilist currently has
465
468
        # self.logbox in it or not
466
469
        self.log_visible = True
467
470
        self.log_wrap = "any"
468
 
        
 
471
 
 
472
        self.loghandler = UILogHandler(self)
 
473
 
469
474
        self.rebuild()
470
 
        self.log_message_raw(("bold",
471
 
                              "Mandos Monitor version " + version))
472
 
        self.log_message_raw(("bold",
473
 
                              "q: Quit  ?: Help"))
474
 
        
475
 
        self.busname = domain + '.Mandos'
476
 
        self.main_loop = gobject.MainLoop()
477
 
        self.bus = dbus.SystemBus()
478
 
        mandos_dbus_objc = self.bus.get_object(
479
 
            self.busname, "/", follow_name_owner_changes=True)
480
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
481
 
                                          dbus_interface
482
 
                                          = server_interface)
483
 
        try:
484
 
            mandos_clients = (self.mandos_serv
485
 
                              .GetAllClientsWithProperties())
486
 
        except dbus.exceptions.DBusException:
487
 
            mandos_clients = dbus.Dictionary()
488
 
        
489
 
        (self.mandos_serv
490
 
         .connect_to_signal("ClientRemoved",
491
 
                            self.find_and_remove_client,
492
 
                            dbus_interface=server_interface,
493
 
                            byte_arrays=True))
494
 
        (self.mandos_serv
495
 
         .connect_to_signal("ClientAdded",
496
 
                            self.add_new_client,
497
 
                            dbus_interface=server_interface,
498
 
                            byte_arrays=True))
499
 
        (self.mandos_serv
500
 
         .connect_to_signal("ClientNotFound",
501
 
                            self.client_not_found,
502
 
                            dbus_interface=server_interface,
503
 
                            byte_arrays=True))
504
 
        for path, client in mandos_clients.iteritems():
505
 
            client_proxy_object = self.bus.get_object(self.busname,
506
 
                                                      path)
507
 
            self.add_client(MandosClientWidget(server_proxy_object
508
 
                                               =self.mandos_serv,
509
 
                                               proxy_object
510
 
                                               =client_proxy_object,
511
 
                                               properties=client,
512
 
                                               update_hook
513
 
                                               =self.refresh,
514
 
                                               delete_hook
515
 
                                               =self.remove_client,
516
 
                                               logger
517
 
                                               =self.log_message),
518
 
                            path=path)
519
 
    
520
 
    def client_not_found(self, fingerprint, address):
521
 
        self.log_message(("Client with address %s and fingerprint %s"
522
 
                          " could not be found" % (address,
523
 
                                                    fingerprint)))
524
 
    
 
475
        self.add_log_line(("bold",
 
476
                           "Mandos Monitor version " + version))
 
477
        self.add_log_line(("bold", "q: Quit  ?: Help"))
 
478
 
 
479
        self.busname = domain + ".Mandos"
 
480
        self.main_loop = GLib.MainLoop()
 
481
 
 
482
    def client_not_found(self, key_id, address):
 
483
        log.info("Client with address %s and key ID %s could"
 
484
                 " not be found", address, key_id)
 
485
 
525
486
    def rebuild(self):
526
487
        """This rebuilds the User Interface.
527
488
        Call this when the widget layout needs to change"""
528
489
        self.uilist = []
529
 
        #self.uilist.append(urwid.ListBox(self.clients))
 
490
        # self.uilist.append(urwid.ListBox(self.clients))
530
491
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
531
492
                                                          clients),
532
 
                                       #header=urwid.Divider(),
 
493
                                       # header=urwid.Divider(),
533
494
                                       header=None,
534
 
                                       footer=
535
 
                                       urwid.Divider(div_char=
536
 
                                                     self.divider)))
 
495
                                       footer=urwid.Divider(
 
496
                                           div_char=self.divider)))
537
497
        if self.log_visible:
538
498
            self.uilist.append(self.logbox)
539
 
            pass
540
499
        self.topwidget = urwid.Pile(self.uilist)
541
 
    
542
 
    def log_message(self, message):
543
 
        timestamp = datetime.datetime.now().isoformat()
544
 
        self.log_message_raw(timestamp + ": " + message)
545
 
    
546
 
    def log_message_raw(self, markup):
547
 
        """Add a log message to the log buffer."""
 
500
 
 
501
    def add_log_line(self, markup):
548
502
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
549
 
        if (self.max_log_length
550
 
            and len(self.log) > self.max_log_length):
551
 
            del self.log[0:len(self.log)-self.max_log_length-1]
552
 
        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)]
 
506
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
553
507
                              coming_from="above")
554
508
        self.refresh()
555
 
    
 
509
 
556
510
    def toggle_log_display(self):
557
511
        """Toggle visibility of the log buffer."""
558
512
        self.log_visible = not self.log_visible
559
513
        self.rebuild()
560
 
        #self.log_message("Log visibility changed to: "
561
 
        #                 + unicode(self.log_visible))
562
 
    
 
514
        log.debug("Log visibility changed to: %s", self.log_visible)
 
515
 
563
516
    def change_log_display(self):
564
517
        """Change type of log display.
565
518
        Currently, this toggles wrapping of text lines."""
569
522
            self.log_wrap = "clip"
570
523
        for textwidget in self.log:
571
524
            textwidget.set_wrap_mode(self.log_wrap)
572
 
        #self.log_message("Wrap mode: " + self.log_wrap)
573
 
    
574
 
    def find_and_remove_client(self, path, name):
575
 
        """Find an client from its object path and remove it.
576
 
        
577
 
        This is connected to the ClientRemoved signal from the
 
525
        log.debug("Wrap mode: %s", self.log_wrap)
 
526
 
 
527
    def find_and_remove_client(self, path, interfaces):
 
528
        """Find a client by its object path and remove it.
 
529
 
 
530
        This is connected to the InterfacesRemoved signal from the
578
531
        Mandos server object."""
 
532
        if client_interface not in interfaces:
 
533
            # Not a Mandos client object; ignore
 
534
            return
579
535
        try:
580
536
            client = self.clients_dict[path]
581
537
        except KeyError:
582
538
            # not found?
583
 
            return
584
 
        self.remove_client(client, path)
585
 
    
586
 
    def add_new_client(self, path):
 
539
            log.warning("Unknown client %s removed", path)
 
540
            return
 
541
        client.delete()
 
542
 
 
543
    def add_new_client(self, path, ifs_and_props):
 
544
        """Find a client by its object path and remove it.
 
545
 
 
546
        This is connected to the InterfacesAdded signal from the
 
547
        Mandos server object.
 
548
        """
 
549
        if client_interface not in ifs_and_props:
 
550
            # Not a Mandos client object; ignore
 
551
            return
587
552
        client_proxy_object = self.bus.get_object(self.busname, path)
588
 
        self.add_client(MandosClientWidget(server_proxy_object
589
 
                                           =self.mandos_serv,
590
 
                                           proxy_object
591
 
                                           =client_proxy_object,
592
 
                                           update_hook
593
 
                                           =self.refresh,
594
 
                                           delete_hook
595
 
                                           =self.remove_client,
596
 
                                           logger
597
 
                                           =self.log_message),
 
553
        self.add_client(MandosClientWidget(
 
554
            server_proxy_object=self.mandos_serv,
 
555
            proxy_object=client_proxy_object,
 
556
            update_hook=self.refresh,
 
557
            delete_hook=self.remove_client,
 
558
            properties=dict(ifs_and_props[client_interface])),
598
559
                        path=path)
599
 
    
 
560
 
600
561
    def add_client(self, client, path=None):
601
562
        self.clients.append(client)
602
563
        if path is None:
603
564
            path = client.proxy.object_path
604
565
        self.clients_dict[path] = client
605
 
        self.clients.sort(None, lambda c: c.properties["Name"])
 
566
        self.clients.sort(key=lambda c: c.properties["Name"])
606
567
        self.refresh()
607
 
    
 
568
 
608
569
    def remove_client(self, client, path=None):
609
570
        self.clients.remove(client)
610
571
        if path is None:
611
572
            path = client.proxy.object_path
612
573
        del self.clients_dict[path]
613
 
        if not self.clients_dict:
614
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
615
 
            # is completely emptied, we need to recreate it.
616
 
            self.clients = urwid.SimpleListWalker([])
617
 
            self.rebuild()
618
574
        self.refresh()
619
 
    
 
575
 
620
576
    def refresh(self):
621
577
        """Redraw the screen"""
622
578
        canvas = self.topwidget.render(self.size, focus=True)
623
579
        self.screen.draw_screen(self.size, canvas)
624
 
    
 
580
 
625
581
    def run(self):
626
582
        """Start the main loop and exit when it's done."""
 
583
        log.addHandler(self.loghandler)
 
584
        self.orig_log_propagate = log.propagate
 
585
        log.propagate = False
 
586
        self.orig_log_level = log.level
 
587
        log.setLevel("INFO")
 
588
        self.bus = dbus.SystemBus()
 
589
        mandos_dbus_objc = self.bus.get_object(
 
590
            self.busname, "/", follow_name_owner_changes=True)
 
591
        self.mandos_serv = dbus.Interface(
 
592
            mandos_dbus_objc, dbus_interface=server_interface)
 
593
        try:
 
594
            mandos_clients = (self.mandos_serv
 
595
                              .GetAllClientsWithProperties())
 
596
            if not mandos_clients:
 
597
                log.warning("Note: Server has no clients.")
 
598
        except dbus.exceptions.DBusException:
 
599
            log.warning("Note: No Mandos server running.")
 
600
            mandos_clients = dbus.Dictionary()
 
601
 
 
602
        (self.mandos_serv
 
603
         .connect_to_signal("InterfacesRemoved",
 
604
                            self.find_and_remove_client,
 
605
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
606
                            byte_arrays=True))
 
607
        (self.mandos_serv
 
608
         .connect_to_signal("InterfacesAdded",
 
609
                            self.add_new_client,
 
610
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
611
                            byte_arrays=True))
 
612
        (self.mandos_serv
 
613
         .connect_to_signal("ClientNotFound",
 
614
                            self.client_not_found,
 
615
                            dbus_interface=server_interface,
 
616
                            byte_arrays=True))
 
617
        for path, client in mandos_clients.items():
 
618
            client_proxy_object = self.bus.get_object(self.busname,
 
619
                                                      path)
 
620
            self.add_client(MandosClientWidget(
 
621
                server_proxy_object=self.mandos_serv,
 
622
                proxy_object=client_proxy_object,
 
623
                properties=client,
 
624
                update_hook=self.refresh,
 
625
                delete_hook=self.remove_client),
 
626
                            path=path)
 
627
 
627
628
        self.refresh()
628
 
        self._input_callback_tag = (gobject.io_add_watch
629
 
                                    (sys.stdin.fileno(),
630
 
                                     gobject.IO_IN,
631
 
                                     self.process_input))
 
629
        self._input_callback_tag = (
 
630
            GLib.io_add_watch(
 
631
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
 
632
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
633
                glib_safely(self.process_input)))
632
634
        self.main_loop.run()
633
635
        # Main loop has finished, we should close everything now
634
 
        gobject.source_remove(self._input_callback_tag)
635
 
        self.screen.stop()
636
 
    
 
636
        GLib.source_remove(self._input_callback_tag)
 
637
        with warnings.catch_warnings():
 
638
            warnings.simplefilter("ignore", BytesWarning)
 
639
            self.screen.stop()
 
640
 
637
641
    def stop(self):
638
642
        self.main_loop.quit()
639
 
    
 
643
        log.removeHandler(self.loghandler)
 
644
        log.propagate = self.orig_log_propagate
 
645
 
640
646
    def process_input(self, source, condition):
641
647
        keys = self.screen.get_input()
642
 
        translations = { "ctrl n": "down",      # Emacs
643
 
                         "ctrl p": "up",        # Emacs
644
 
                         "ctrl v": "page down", # Emacs
645
 
                         "meta v": "page up",   # Emacs
646
 
                         " ": "page down",      # less
647
 
                         "f": "page down",      # less
648
 
                         "b": "page up",        # less
649
 
                         "j": "down",           # vi
650
 
                         "k": "up",             # vi
651
 
                         }
 
648
        translations = {"ctrl n": "down",       # Emacs
 
649
                        "ctrl p": "up",         # Emacs
 
650
                        "ctrl v": "page down",  # Emacs
 
651
                        "meta v": "page up",    # Emacs
 
652
                        " ": "page down",       # less
 
653
                        "f": "page down",       # less
 
654
                        "b": "page up",         # less
 
655
                        "j": "down",            # vi
 
656
                        "k": "up",              # vi
 
657
                        }
652
658
        for key in keys:
653
659
            try:
654
660
                key = translations[key]
655
661
            except KeyError:    # :-)
656
662
                pass
657
 
            
 
663
 
658
664
            if key == "q" or key == "Q":
659
665
                self.stop()
660
666
                break
661
667
            elif key == "window resize":
662
668
                self.size = self.screen.get_cols_rows()
663
669
                self.refresh()
664
 
            elif key == "\f":  # Ctrl-L
 
670
            elif key == "ctrl l":
 
671
                self.screen.clear()
665
672
                self.refresh()
666
673
            elif key == "l" or key == "D":
667
674
                self.toggle_log_display()
673
680
                if not self.log_visible:
674
681
                    self.log_visible = True
675
682
                    self.rebuild()
676
 
                self.log_message_raw(("bold",
677
 
                                      "  ".
678
 
                                      join(("q: Quit",
679
 
                                            "?: Help",
680
 
                                            "l: Log window toggle",
681
 
                                            "TAB: Switch window",
682
 
                                            "w: Wrap (log)"))))
683
 
                self.log_message_raw(("bold",
684
 
                                      "  "
685
 
                                      .join(("Clients:",
686
 
                                             "+: Enable",
687
 
                                             "-: Disable",
688
 
                                             "R: Remove",
689
 
                                             "s: Start new checker",
690
 
                                             "S: Stop checker",
691
 
                                             "C: Checker OK",
692
 
                                             "a: Approve",
693
 
                                             "d: Deny"))))
 
683
                self.add_log_line(("bold",
 
684
                                   "  ".join(("q: Quit",
 
685
                                              "?: Help",
 
686
                                              "l: Log window toggle",
 
687
                                              "TAB: Switch window",
 
688
                                              "w: Wrap (log lines)",
 
689
                                              "v: Toggle verbose log",
 
690
                                   ))))
 
691
                self.add_log_line(("bold",
 
692
                                   "  ".join(("Clients:",
 
693
                                              "+: Enable",
 
694
                                              "-: Disable",
 
695
                                              "R: Remove",
 
696
                                              "s: Start new checker",
 
697
                                              "S: Stop checker",
 
698
                                              "C: Checker OK",
 
699
                                              "a: Approve",
 
700
                                              "d: Deny",
 
701
                                   ))))
694
702
                self.refresh()
695
703
            elif key == "tab":
696
704
                if self.topwidget.get_focus() is self.logbox:
698
706
                else:
699
707
                    self.topwidget.set_focus(self.logbox)
700
708
                self.refresh()
701
 
            #elif (key == "end" or key == "meta >" or key == "G"
702
 
            #      or key == ">"):
703
 
            #    pass            # xxx end-of-buffer
704
 
            #elif (key == "home" or key == "meta <" or key == "g"
705
 
            #      or key == "<"):
706
 
            #    pass            # xxx beginning-of-buffer
707
 
            #elif key == "ctrl e" or key == "$":
708
 
            #    pass            # xxx move-end-of-line
709
 
            #elif key == "ctrl a" or key == "^":
710
 
            #    pass            # xxx move-beginning-of-line
711
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
712
 
            #    pass            # xxx left
713
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
714
 
            #    pass            # xxx right
715
 
            #elif key == "a":
716
 
            #    pass            # scroll up log
717
 
            #elif key == "z":
718
 
            #    pass            # scroll down log
 
709
            elif key == "v":
 
710
                if log.level < logging.INFO:
 
711
                    log.setLevel(logging.INFO)
 
712
                    log.info("Verbose mode: Off")
 
713
                else:
 
714
                    log.setLevel(logging.NOTSET)
 
715
                    log.info("Verbose mode: On")
 
716
            # elif (key == "end" or key == "meta >" or key == "G"
 
717
            #       or key == ">"):
 
718
            #     pass            # xxx end-of-buffer
 
719
            # elif (key == "home" or key == "meta <" or key == "g"
 
720
            #       or key == "<"):
 
721
            #     pass            # xxx beginning-of-buffer
 
722
            # elif key == "ctrl e" or key == "$":
 
723
            #     pass            # xxx move-end-of-line
 
724
            # elif key == "ctrl a" or key == "^":
 
725
            #     pass            # xxx move-beginning-of-line
 
726
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
727
            #     pass            # xxx left
 
728
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
729
            #     pass            # xxx right
 
730
            # elif key == "a":
 
731
            #     pass            # scroll up log
 
732
            # elif key == "z":
 
733
            #     pass            # scroll down log
719
734
            elif self.topwidget.selectable():
720
735
                self.topwidget.keypress(self.size, key)
721
736
                self.refresh()
722
737
        return True
723
738
 
 
739
 
 
740
class UILogHandler(logging.Handler):
 
741
    def __init__(self, ui, *args, **kwargs):
 
742
        self.ui = ui
 
743
        super(UILogHandler, self).__init__(*args, **kwargs)
 
744
        self.setFormatter(
 
745
            logging.Formatter("%(asctime)s: %(message)s"))
 
746
    def emit(self, record):
 
747
        msg = self.format(record)
 
748
        if record.levelno > logging.INFO:
 
749
            msg = ("bold", msg)
 
750
        self.ui.add_log_line(msg)
 
751
 
 
752
 
724
753
ui = UserInterface()
725
754
try:
726
755
    ui.run()
727
756
except KeyboardInterrupt:
728
 
    ui.screen.stop()
729
 
except Exception, e:
730
 
    ui.log_message(unicode(e))
731
 
    ui.screen.stop()
 
757
    with warnings.catch_warnings():
 
758
        warnings.filterwarnings("ignore", "", BytesWarning)
 
759
        ui.screen.stop()
 
760
except Exception:
 
761
    with warnings.catch_warnings():
 
762
        warnings.filterwarnings("ignore", "", BytesWarning)
 
763
        ui.screen.stop()
732
764
    raise