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  • Committer: Teddy Hogeborn
  • Date: 2021-03-21 19:51:15 UTC
  • Revision ID: teddy@recompile.se-20210321195115-qe6g0fyj1kabwlav
Fix theoretical GnuTLS bug

Fix "NameError: global name '_error_code' is not defined" error if
GNUTLS_E_INTERRUPTED or GNUTLS_E_AGAIN was ever returned from
gnutls_record_send().

* mandos (gnutls._retry_on_error): Import "_error_code" from outer
  class scope to local function scope via a keyword argument.

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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 © 2009-2014 Teddy Hogeborn
7
 
# Copyright © 2009-2014 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
21
 
# <http://www.gnu.org/licenses/>.
22
 
# 
 
22
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
23
#
23
24
# Contact the authors at <mandos@recompile.se>.
24
 
# 
 
25
#
25
26
 
26
27
from __future__ import (division, absolute_import, print_function,
27
28
                        unicode_literals)
32
33
 
33
34
import sys
34
35
import os
35
 
 
 
36
import warnings
36
37
import datetime
 
38
import locale
 
39
import logging
37
40
 
38
41
import urwid.curses_display
39
42
import urwid
40
43
 
41
44
from dbus.mainloop.glib import DBusGMainLoop
42
 
try:
43
 
    import gobject
44
 
except ImportError:
45
 
    from gi.repository import GObject as gobject
 
45
from gi.repository import GLib
46
46
 
47
47
import dbus
48
48
 
49
 
import locale
50
 
 
51
 
if sys.version_info[0] == 2:
 
49
if sys.version_info.major == 2:
 
50
    __metaclass__ = type
52
51
    str = unicode
53
52
 
54
 
locale.setlocale(locale.LC_ALL, '')
55
 
 
56
 
import logging
57
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
 
53
log = logging.getLogger(os.path.basename(sys.argv[0]))
 
54
logging.basicConfig(level="NOTSET", # Show all messages
 
55
                    format="%(message)s") # Show basic log messages
 
56
 
 
57
logging.captureWarnings(True)   # Show warnings via the logging system
 
58
 
 
59
locale.setlocale(locale.LC_ALL, "")
 
60
 
 
61
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
58
62
 
59
63
# Some useful constants
60
 
domain = 'se.recompile'
61
 
server_interface = domain + '.Mandos'
62
 
client_interface = domain + '.Mandos.Client'
63
 
version = "1.6.6"
 
64
domain = "se.recompile"
 
65
server_interface = domain + ".Mandos"
 
66
client_interface = domain + ".Mandos.Client"
 
67
version = "1.8.14"
 
68
 
 
69
try:
 
70
    dbus.OBJECT_MANAGER_IFACE
 
71
except AttributeError:
 
72
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
73
 
64
74
 
65
75
def isoformat_to_datetime(iso):
66
76
    "Parse an ISO 8601 date string to a datetime.datetime()"
75
85
                             int(day),
76
86
                             int(hour),
77
87
                             int(minute),
78
 
                             int(second),           # Whole seconds
79
 
                             int(fraction*1000000)) # Microseconds
80
 
 
81
 
class MandosClientPropertyCache(object):
 
88
                             int(second),            # Whole seconds
 
89
                             int(fraction*1000000))  # Microseconds
 
90
 
 
91
 
 
92
class MandosClientPropertyCache:
82
93
    """This wraps a Mandos Client D-Bus proxy object, caches the
83
94
    properties and calls a hook function when any of them are
84
95
    changed.
85
96
    """
86
97
    def __init__(self, proxy_object=None, properties=None, **kwargs):
87
 
        self.proxy = proxy_object # Mandos Client proxy object
 
98
        self.proxy = proxy_object  # Mandos Client proxy object
88
99
        self.properties = dict() if properties is None else properties
89
100
        self.property_changed_match = (
90
 
            self.proxy.connect_to_signal("PropertyChanged",
91
 
                                         self._property_changed,
92
 
                                         client_interface,
 
101
            self.proxy.connect_to_signal("PropertiesChanged",
 
102
                                         self.properties_changed,
 
103
                                         dbus.PROPERTIES_IFACE,
93
104
                                         byte_arrays=True))
94
 
        
 
105
 
95
106
        if properties is None:
96
 
            self.properties.update(
97
 
                self.proxy.GetAll(client_interface,
98
 
                                  dbus_interface
99
 
                                  = dbus.PROPERTIES_IFACE))
100
 
        
 
107
            self.properties.update(self.proxy.GetAll(
 
108
                client_interface,
 
109
                dbus_interface=dbus.PROPERTIES_IFACE))
 
110
 
101
111
        super(MandosClientPropertyCache, self).__init__(**kwargs)
102
 
    
103
 
    def _property_changed(self, property, value):
104
 
        """Helper which takes positional arguments"""
105
 
        return self.property_changed(property=property, value=value)
106
 
    
107
 
    def property_changed(self, property=None, value=None):
108
 
        """This is called whenever we get a PropertyChanged signal
109
 
        It updates the changed property in the "properties" dict.
 
112
 
 
113
    def properties_changed(self, interface, properties, invalidated):
 
114
        """This is called whenever we get a PropertiesChanged signal
 
115
        It updates the changed properties in the "properties" dict.
110
116
        """
111
117
        # Update properties dict with new value
112
 
        self.properties[property] = value
113
 
    
 
118
        if interface == client_interface:
 
119
            self.properties.update(properties)
 
120
 
114
121
    def delete(self):
115
122
        self.property_changed_match.remove()
116
123
 
118
125
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
119
126
    """A Mandos Client which is visible on the screen.
120
127
    """
121
 
    
 
128
 
122
129
    def __init__(self, server_proxy_object=None, update_hook=None,
123
 
                 delete_hook=None, logger=None, **kwargs):
 
130
                 delete_hook=None, **kwargs):
124
131
        # Called on update
125
132
        self.update_hook = update_hook
126
133
        # Called on delete
127
134
        self.delete_hook = delete_hook
128
135
        # Mandos Server proxy object
129
136
        self.server_proxy_object = server_proxy_object
130
 
        # Logger
131
 
        self.logger = logger
132
 
        
 
137
 
133
138
        self._update_timer_callback_tag = None
134
 
        
 
139
 
135
140
        # The widget shown normally
136
141
        self._text_widget = urwid.Text("")
137
142
        # The widget shown when we have focus
139
144
        super(MandosClientWidget, self).__init__(**kwargs)
140
145
        self.update()
141
146
        self.opened = False
142
 
        
 
147
 
143
148
        self.match_objects = (
144
149
            self.proxy.connect_to_signal("CheckerCompleted",
145
150
                                         self.checker_completed,
161
166
                                         self.rejected,
162
167
                                         client_interface,
163
168
                                         byte_arrays=True))
164
 
        self.logger('Created client {0}'
165
 
                    .format(self.properties["Name"]), level=0)
166
 
    
 
169
        log.debug("Created client %s", self.properties["Name"])
 
170
 
167
171
    def using_timer(self, flag):
168
172
        """Call this method with True or False when timer should be
169
173
        activated or deactivated.
170
174
        """
171
175
        if flag and self._update_timer_callback_tag is None:
172
176
            # Will update the shown timer value every second
173
 
            self._update_timer_callback_tag = (gobject.timeout_add
174
 
                                               (1000,
175
 
                                                self.update_timer))
 
177
            self._update_timer_callback_tag = (
 
178
                GLib.timeout_add(1000,
 
179
                                 glib_safely(self.update_timer)))
176
180
        elif not (flag or self._update_timer_callback_tag is None):
177
 
            gobject.source_remove(self._update_timer_callback_tag)
 
181
            GLib.source_remove(self._update_timer_callback_tag)
178
182
            self._update_timer_callback_tag = None
179
 
    
 
183
 
180
184
    def checker_completed(self, exitstatus, condition, command):
181
185
        if exitstatus == 0:
182
 
            self.logger('Checker for client {0} (command "{1}")'
183
 
                        ' succeeded'.format(self.properties["Name"],
184
 
                                            command), level=0)
 
186
            log.debug('Checker for client %s (command "%s")'
 
187
                      " succeeded", self.properties["Name"], command)
185
188
            self.update()
186
189
            return
187
190
        # Checker failed
188
191
        if os.WIFEXITED(condition):
189
 
            self.logger('Checker for client {0} (command "{1}")'
190
 
                        ' failed with exit code {2}'
191
 
                        .format(self.properties["Name"], command,
192
 
                                os.WEXITSTATUS(condition)))
 
192
            log.info('Checker for client %s (command "%s") failed'
 
193
                     " with exit code %d", self.properties["Name"],
 
194
                     command, os.WEXITSTATUS(condition))
193
195
        elif os.WIFSIGNALED(condition):
194
 
            self.logger('Checker for client {0} (command "{1}") was'
195
 
                        ' killed by signal {2}'
196
 
                        .format(self.properties["Name"], command,
197
 
                                os.WTERMSIG(condition)))
198
 
        elif os.WCOREDUMP(condition):
199
 
            self.logger('Checker for client {0} (command "{1}")'
200
 
                        ' dumped core'
201
 
                        .format(self.properties["Name"], command))
202
 
        else:
203
 
            self.logger('Checker for client {0} completed'
204
 
                        ' mysteriously'
205
 
                        .format(self.properties["Name"]))
 
196
            log.info('Checker for client %s (command "%s") was'
 
197
                     " killed by signal %d", self.properties["Name"],
 
198
                     command, os.WTERMSIG(condition))
206
199
        self.update()
207
 
    
 
200
 
208
201
    def checker_started(self, command):
209
202
        """Server signals that a checker started."""
210
 
        self.logger('Client {0} started checker "{1}"'
211
 
                    .format(self.properties["Name"],
212
 
                            command), level=0)
213
 
    
 
203
        log.debug('Client %s started checker "%s"',
 
204
                  self.properties["Name"], command)
 
205
 
214
206
    def got_secret(self):
215
 
        self.logger('Client {0} received its secret'
216
 
                    .format(self.properties["Name"]))
217
 
    
 
207
        log.info("Client %s received its secret",
 
208
                 self.properties["Name"])
 
209
 
218
210
    def need_approval(self, timeout, default):
219
211
        if not default:
220
 
            message = 'Client {0} needs approval within {1} seconds'
 
212
            message = "Client %s needs approval within %f seconds"
221
213
        else:
222
 
            message = 'Client {0} will get its secret in {1} seconds'
223
 
        self.logger(message.format(self.properties["Name"],
224
 
                                   timeout/1000))
225
 
    
 
214
            message = "Client %s will get its secret in %f seconds"
 
215
        log.info(message, self.properties["Name"], timeout/1000)
 
216
 
226
217
    def rejected(self, reason):
227
 
        self.logger('Client {0} was rejected; reason: {1}'
228
 
                    .format(self.properties["Name"], reason))
229
 
    
 
218
        log.info("Client %s was rejected; reason: %s",
 
219
                 self.properties["Name"], reason)
 
220
 
230
221
    def selectable(self):
231
222
        """Make this a "selectable" widget.
232
223
        This overrides the method from urwid.FlowWidget."""
233
224
        return True
234
 
    
 
225
 
235
226
    def rows(self, maxcolrow, focus=False):
236
227
        """How many rows this widget will occupy might depend on
237
228
        whether we have focus or not.
238
229
        This overrides the method from urwid.FlowWidget"""
239
230
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
240
 
    
 
231
 
241
232
    def current_widget(self, focus=False):
242
233
        if focus or self.opened:
243
234
            return self._focus_widget
244
235
        return self._widget
245
 
    
 
236
 
246
237
    def update(self):
247
238
        "Called when what is visible on the screen should be updated."
248
239
        # How to add standout mode to a style
249
 
        with_standout = { "normal": "standout",
250
 
                          "bold": "bold-standout",
251
 
                          "underline-blink":
252
 
                              "underline-blink-standout",
253
 
                          "bold-underline-blink":
254
 
                              "bold-underline-blink-standout",
255
 
                          }
256
 
        
 
240
        with_standout = {"normal": "standout",
 
241
                         "bold": "bold-standout",
 
242
                         "underline-blink":
 
243
                         "underline-blink-standout",
 
244
                         "bold-underline-blink":
 
245
                         "bold-underline-blink-standout",
 
246
                         }
 
247
 
257
248
        # Rebuild focus and non-focus widgets using current properties
258
 
        
 
249
 
259
250
        # Base part of a client. Name!
260
 
        base = '{name}: '.format(name=self.properties["Name"])
 
251
        base = "{name}: ".format(name=self.properties["Name"])
261
252
        if not self.properties["Enabled"]:
262
253
            message = "DISABLED"
263
254
            self.using_timer(False)
264
255
        elif self.properties["ApprovalPending"]:
265
 
            timeout = datetime.timedelta(milliseconds
266
 
                                         = self.properties
267
 
                                         ["ApprovalDelay"])
 
256
            timeout = datetime.timedelta(
 
257
                milliseconds=self.properties["ApprovalDelay"])
268
258
            last_approval_request = isoformat_to_datetime(
269
259
                self.properties["LastApprovalRequest"])
270
260
            if last_approval_request is not None:
274
264
            else:
275
265
                timer = datetime.timedelta()
276
266
            if self.properties["ApprovedByDefault"]:
277
 
                message = "Approval in {0}. (d)eny?"
 
267
                message = "Approval in {}. (d)eny?"
278
268
            else:
279
 
                message = "Denial in {0}. (a)pprove?"
 
269
                message = "Denial in {}. (a)pprove?"
280
270
            message = message.format(str(timer).rsplit(".", 1)[0])
281
271
            self.using_timer(True)
282
272
        elif self.properties["LastCheckerStatus"] != 0:
286
276
                timer = datetime.timedelta(0)
287
277
            else:
288
278
                expires = (datetime.datetime.strptime
289
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
279
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
290
280
                timer = max(expires - datetime.datetime.utcnow(),
291
281
                            datetime.timedelta())
292
 
            message = ('A checker has failed! Time until client'
293
 
                       ' gets disabled: {0}'
 
282
            message = ("A checker has failed! Time until client"
 
283
                       " gets disabled: {}"
294
284
                       .format(str(timer).rsplit(".", 1)[0]))
295
285
            self.using_timer(True)
296
286
        else:
297
287
            message = "enabled"
298
288
            self.using_timer(False)
299
 
        self._text = "{0}{1}".format(base, message)
300
 
        
 
289
        self._text = "{}{}".format(base, message)
 
290
 
301
291
        if not urwid.supports_unicode():
302
292
            self._text = self._text.encode("ascii", "replace")
303
293
        textlist = [("normal", self._text)]
313
303
        # Run update hook, if any
314
304
        if self.update_hook is not None:
315
305
            self.update_hook()
316
 
    
 
306
 
317
307
    def update_timer(self):
318
 
        """called by gobject. Will indefinitely loop until
319
 
        gobject.source_remove() on tag is called"""
 
308
        """called by GLib. Will indefinitely loop until
 
309
        GLib.source_remove() on tag is called
 
310
        """
320
311
        self.update()
321
312
        return True             # Keep calling this
322
 
    
 
313
 
323
314
    def delete(self, **kwargs):
324
315
        if self._update_timer_callback_tag is not None:
325
 
            gobject.source_remove(self._update_timer_callback_tag)
 
316
            GLib.source_remove(self._update_timer_callback_tag)
326
317
            self._update_timer_callback_tag = None
327
318
        for match in self.match_objects:
328
319
            match.remove()
330
321
        if self.delete_hook is not None:
331
322
            self.delete_hook(self)
332
323
        return super(MandosClientWidget, self).delete(**kwargs)
333
 
    
 
324
 
334
325
    def render(self, maxcolrow, focus=False):
335
326
        """Render differently if we have focus.
336
327
        This overrides the method from urwid.FlowWidget"""
337
328
        return self.current_widget(focus).render(maxcolrow,
338
329
                                                 focus=focus)
339
 
    
 
330
 
340
331
    def keypress(self, maxcolrow, key):
341
332
        """Handle keys.
342
333
        This overrides the method from urwid.FlowWidget"""
343
334
        if key == "+":
344
 
            self.proxy.Enable(dbus_interface = client_interface,
345
 
                              ignore_reply=True)
 
335
            self.proxy.Set(client_interface, "Enabled",
 
336
                           dbus.Boolean(True), ignore_reply=True,
 
337
                           dbus_interface=dbus.PROPERTIES_IFACE)
346
338
        elif key == "-":
347
 
            self.proxy.Disable(dbus_interface = client_interface,
348
 
                               ignore_reply=True)
 
339
            self.proxy.Set(client_interface, "Enabled", False,
 
340
                           ignore_reply=True,
 
341
                           dbus_interface=dbus.PROPERTIES_IFACE)
349
342
        elif key == "a":
350
343
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
351
 
                               dbus_interface = client_interface,
 
344
                               dbus_interface=client_interface,
352
345
                               ignore_reply=True)
353
346
        elif key == "d":
354
347
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
355
 
                                  dbus_interface = client_interface,
 
348
                               dbus_interface=client_interface,
356
349
                               ignore_reply=True)
357
350
        elif key == "R" or key == "_" or key == "ctrl k":
358
351
            self.server_proxy_object.RemoveClient(self.proxy
359
352
                                                  .object_path,
360
353
                                                  ignore_reply=True)
361
354
        elif key == "s":
362
 
            self.proxy.StartChecker(dbus_interface = client_interface,
363
 
                                    ignore_reply=True)
 
355
            self.proxy.Set(client_interface, "CheckerRunning",
 
356
                           dbus.Boolean(True), ignore_reply=True,
 
357
                           dbus_interface=dbus.PROPERTIES_IFACE)
364
358
        elif key == "S":
365
 
            self.proxy.StopChecker(dbus_interface = client_interface,
366
 
                                   ignore_reply=True)
 
359
            self.proxy.Set(client_interface, "CheckerRunning",
 
360
                           dbus.Boolean(False), ignore_reply=True,
 
361
                           dbus_interface=dbus.PROPERTIES_IFACE)
367
362
        elif key == "C":
368
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
363
            self.proxy.CheckedOK(dbus_interface=client_interface,
369
364
                                 ignore_reply=True)
370
365
        # xxx
371
366
#         elif key == "p" or key == "=":
376
371
#             self.open()
377
372
        else:
378
373
            return key
379
 
    
380
 
    def property_changed(self, property=None, **kwargs):
381
 
        """Call self.update() if old value is not new value.
 
374
 
 
375
    def properties_changed(self, interface, properties, invalidated):
 
376
        """Call self.update() if any properties changed.
382
377
        This overrides the method from MandosClientPropertyCache"""
383
 
        property_name = str(property)
384
 
        old_value = self.properties.get(property_name)
385
 
        super(MandosClientWidget, self).property_changed(
386
 
            property=property, **kwargs)
387
 
        if self.properties.get(property_name) != old_value:
 
378
        old_values = {key: self.properties.get(key)
 
379
                      for key in properties.keys()}
 
380
        super(MandosClientWidget, self).properties_changed(
 
381
            interface, properties, invalidated)
 
382
        if any(old_values[key] != self.properties.get(key)
 
383
               for key in old_values):
388
384
            self.update()
389
385
 
390
386
 
 
387
def glib_safely(func, retval=True):
 
388
    def safe_func(*args, **kwargs):
 
389
        try:
 
390
            return func(*args, **kwargs)
 
391
        except Exception:
 
392
            log.exception("")
 
393
            return retval
 
394
    return safe_func
 
395
 
 
396
 
391
397
class ConstrainedListBox(urwid.ListBox):
392
398
    """Like a normal urwid.ListBox, but will consume all "up" or
393
399
    "down" key presses, thus not allowing any containing widgets to
394
400
    use them as an excuse to shift focus away from this widget.
395
401
    """
396
402
    def keypress(self, *args, **kwargs):
397
 
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
403
        ret = (super(ConstrainedListBox, self)
 
404
               .keypress(*args, **kwargs))
398
405
        if ret in ("up", "down"):
399
406
            return
400
407
        return ret
401
408
 
402
409
 
403
 
class UserInterface(object):
 
410
class UserInterface:
404
411
    """This is the entire user interface - the whole screen
405
412
    with boxes, lists of client widgets, etc.
406
413
    """
407
 
    def __init__(self, max_log_length=1000, log_level=1):
 
414
    def __init__(self, max_log_length=1000):
408
415
        DBusGMainLoop(set_as_default=True)
409
 
        
 
416
 
410
417
        self.screen = urwid.curses_display.Screen()
411
 
        
 
418
 
412
419
        self.screen.register_palette((
413
420
                ("normal",
414
421
                 "default", "default", None),
419
426
                ("standout",
420
427
                 "standout", "default", "standout"),
421
428
                ("bold-underline-blink",
422
 
                 "bold,underline,blink", "default", "bold,underline,blink"),
 
429
                 "bold,underline,blink", "default",
 
430
                 "bold,underline,blink"),
423
431
                ("bold-standout",
424
432
                 "bold,standout", "default", "bold,standout"),
425
433
                ("underline-blink-standout",
429
437
                 "bold,underline,blink,standout", "default",
430
438
                 "bold,underline,blink,standout"),
431
439
                ))
432
 
        
 
440
 
433
441
        if urwid.supports_unicode():
434
 
            self.divider = "─" # \u2500
435
 
            #self.divider = "━" # \u2501
 
442
            self.divider = "─"  # \u2500
436
443
        else:
437
 
            #self.divider = "-" # \u002d
438
 
            self.divider = "_" # \u005f
439
 
        
 
444
            self.divider = "_"  # \u005f
 
445
 
440
446
        self.screen.start()
441
 
        
 
447
 
442
448
        self.size = self.screen.get_cols_rows()
443
 
        
 
449
 
444
450
        self.clients = urwid.SimpleListWalker([])
445
451
        self.clients_dict = {}
446
 
        
 
452
 
447
453
        # We will add Text widgets to this list
448
 
        self.log = []
 
454
        self.log = urwid.SimpleListWalker([])
449
455
        self.max_log_length = max_log_length
450
 
        
451
 
        self.log_level = log_level
452
 
        
 
456
 
453
457
        # We keep a reference to the log widget so we can remove it
454
458
        # from the ListWalker without it getting destroyed
455
459
        self.logbox = ConstrainedListBox(self.log)
456
 
        
 
460
 
457
461
        # This keeps track of whether self.uilist currently has
458
462
        # self.logbox in it or not
459
463
        self.log_visible = True
460
464
        self.log_wrap = "any"
461
 
        
 
465
 
 
466
        self.loghandler = UILogHandler(self)
 
467
 
462
468
        self.rebuild()
463
 
        self.log_message_raw(("bold",
464
 
                              "Mandos Monitor version " + version))
465
 
        self.log_message_raw(("bold",
466
 
                              "q: Quit  ?: Help"))
467
 
        
468
 
        self.busname = domain + '.Mandos'
469
 
        self.main_loop = gobject.MainLoop()
470
 
    
471
 
    def client_not_found(self, fingerprint, address):
472
 
        self.log_message("Client with address {0} and fingerprint"
473
 
                         " {1} could not be found"
474
 
                         .format(address, fingerprint))
475
 
    
 
469
        self.add_log_line(("bold",
 
470
                           "Mandos Monitor version " + version))
 
471
        self.add_log_line(("bold", "q: Quit  ?: Help"))
 
472
 
 
473
        self.busname = domain + ".Mandos"
 
474
        self.main_loop = GLib.MainLoop()
 
475
 
 
476
    def client_not_found(self, key_id, address):
 
477
        log.info("Client with address %s and key ID %s could"
 
478
                 " not be found", address, key_id)
 
479
 
476
480
    def rebuild(self):
477
481
        """This rebuilds the User Interface.
478
482
        Call this when the widget layout needs to change"""
479
483
        self.uilist = []
480
 
        #self.uilist.append(urwid.ListBox(self.clients))
 
484
        # self.uilist.append(urwid.ListBox(self.clients))
481
485
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
482
486
                                                          clients),
483
 
                                       #header=urwid.Divider(),
 
487
                                       # header=urwid.Divider(),
484
488
                                       header=None,
485
 
                                       footer=
486
 
                                       urwid.Divider(div_char=
487
 
                                                     self.divider)))
 
489
                                       footer=urwid.Divider(
 
490
                                           div_char=self.divider)))
488
491
        if self.log_visible:
489
492
            self.uilist.append(self.logbox)
490
493
        self.topwidget = urwid.Pile(self.uilist)
491
 
    
492
 
    def log_message(self, message, level=1):
493
 
        """Log message formatted with timestamp"""
494
 
        if level < self.log_level:
495
 
            return
496
 
        timestamp = datetime.datetime.now().isoformat()
497
 
        self.log_message_raw("{0}: {1}".format(timestamp, message),
498
 
                             level=level)
499
 
    
500
 
    def log_message_raw(self, markup, level=1):
501
 
        """Add a log message to the log buffer."""
502
 
        if level < self.log_level:
503
 
            return
 
494
 
 
495
    def add_log_line(self, markup):
504
496
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
505
 
        if (self.max_log_length
506
 
            and len(self.log) > self.max_log_length):
507
 
            del self.log[0:len(self.log)-self.max_log_length-1]
508
 
        self.logbox.set_focus(len(self.logbox.body.contents),
 
497
        if self.max_log_length:
 
498
            if len(self.log) > self.max_log_length:
 
499
                del self.log[0:(len(self.log) - self.max_log_length)]
 
500
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
509
501
                              coming_from="above")
510
502
        self.refresh()
511
 
    
 
503
 
512
504
    def toggle_log_display(self):
513
505
        """Toggle visibility of the log buffer."""
514
506
        self.log_visible = not self.log_visible
515
507
        self.rebuild()
516
 
        self.log_message("Log visibility changed to: {0}"
517
 
                         .format(self.log_visible), level=0)
518
 
    
 
508
        log.debug("Log visibility changed to: %s", self.log_visible)
 
509
 
519
510
    def change_log_display(self):
520
511
        """Change type of log display.
521
512
        Currently, this toggles wrapping of text lines."""
525
516
            self.log_wrap = "clip"
526
517
        for textwidget in self.log:
527
518
            textwidget.set_wrap_mode(self.log_wrap)
528
 
        self.log_message("Wrap mode: {0}".format(self.log_wrap),
529
 
                         level=0)
530
 
    
531
 
    def find_and_remove_client(self, path, name):
 
519
        log.debug("Wrap mode: %s", self.log_wrap)
 
520
 
 
521
    def find_and_remove_client(self, path, interfaces):
532
522
        """Find a client by its object path and remove it.
533
 
        
534
 
        This is connected to the ClientRemoved signal from the
 
523
 
 
524
        This is connected to the InterfacesRemoved signal from the
535
525
        Mandos server object."""
 
526
        if client_interface not in interfaces:
 
527
            # Not a Mandos client object; ignore
 
528
            return
536
529
        try:
537
530
            client = self.clients_dict[path]
538
531
        except KeyError:
539
532
            # not found?
540
 
            self.log_message("Unknown client {0!r} ({1!r}) removed"
541
 
                             .format(name, path))
 
533
            log.warning("Unknown client %s removed", path)
542
534
            return
543
535
        client.delete()
544
 
    
545
 
    def add_new_client(self, path):
 
536
 
 
537
    def add_new_client(self, path, ifs_and_props):
 
538
        """Find a client by its object path and remove it.
 
539
 
 
540
        This is connected to the InterfacesAdded signal from the
 
541
        Mandos server object.
 
542
        """
 
543
        if client_interface not in ifs_and_props:
 
544
            # Not a Mandos client object; ignore
 
545
            return
546
546
        client_proxy_object = self.bus.get_object(self.busname, path)
547
 
        self.add_client(MandosClientWidget(server_proxy_object
548
 
                                           =self.mandos_serv,
549
 
                                           proxy_object
550
 
                                           =client_proxy_object,
551
 
                                           update_hook
552
 
                                           =self.refresh,
553
 
                                           delete_hook
554
 
                                           =self.remove_client,
555
 
                                           logger
556
 
                                           =self.log_message),
 
547
        self.add_client(MandosClientWidget(
 
548
            server_proxy_object=self.mandos_serv,
 
549
            proxy_object=client_proxy_object,
 
550
            update_hook=self.refresh,
 
551
            delete_hook=self.remove_client,
 
552
            properties=dict(ifs_and_props[client_interface])),
557
553
                        path=path)
558
 
    
 
554
 
559
555
    def add_client(self, client, path=None):
560
556
        self.clients.append(client)
561
557
        if path is None:
563
559
        self.clients_dict[path] = client
564
560
        self.clients.sort(key=lambda c: c.properties["Name"])
565
561
        self.refresh()
566
 
    
 
562
 
567
563
    def remove_client(self, client, path=None):
568
564
        self.clients.remove(client)
569
565
        if path is None:
570
566
            path = client.proxy.object_path
571
567
        del self.clients_dict[path]
572
568
        self.refresh()
573
 
    
 
569
 
574
570
    def refresh(self):
575
571
        """Redraw the screen"""
576
572
        canvas = self.topwidget.render(self.size, focus=True)
577
573
        self.screen.draw_screen(self.size, canvas)
578
 
    
 
574
 
579
575
    def run(self):
580
576
        """Start the main loop and exit when it's done."""
 
577
        log.addHandler(self.loghandler)
 
578
        self.orig_log_propagate = log.propagate
 
579
        log.propagate = False
 
580
        self.orig_log_level = log.level
 
581
        log.setLevel("INFO")
581
582
        self.bus = dbus.SystemBus()
582
583
        mandos_dbus_objc = self.bus.get_object(
583
584
            self.busname, "/", follow_name_owner_changes=True)
584
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
585
 
                                          dbus_interface
586
 
                                          = server_interface)
 
585
        self.mandos_serv = dbus.Interface(
 
586
            mandos_dbus_objc, dbus_interface=server_interface)
587
587
        try:
588
588
            mandos_clients = (self.mandos_serv
589
589
                              .GetAllClientsWithProperties())
590
590
            if not mandos_clients:
591
 
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
591
                log.warning("Note: Server has no clients.")
592
592
        except dbus.exceptions.DBusException:
593
 
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
593
            log.warning("Note: No Mandos server running.")
594
594
            mandos_clients = dbus.Dictionary()
595
 
        
 
595
 
596
596
        (self.mandos_serv
597
 
         .connect_to_signal("ClientRemoved",
 
597
         .connect_to_signal("InterfacesRemoved",
598
598
                            self.find_and_remove_client,
599
 
                            dbus_interface=server_interface,
 
599
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
600
600
                            byte_arrays=True))
601
601
        (self.mandos_serv
602
 
         .connect_to_signal("ClientAdded",
 
602
         .connect_to_signal("InterfacesAdded",
603
603
                            self.add_new_client,
604
 
                            dbus_interface=server_interface,
 
604
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
605
605
                            byte_arrays=True))
606
606
        (self.mandos_serv
607
607
         .connect_to_signal("ClientNotFound",
611
611
        for path, client in mandos_clients.items():
612
612
            client_proxy_object = self.bus.get_object(self.busname,
613
613
                                                      path)
614
 
            self.add_client(MandosClientWidget(server_proxy_object
615
 
                                               =self.mandos_serv,
616
 
                                               proxy_object
617
 
                                               =client_proxy_object,
618
 
                                               properties=client,
619
 
                                               update_hook
620
 
                                               =self.refresh,
621
 
                                               delete_hook
622
 
                                               =self.remove_client,
623
 
                                               logger
624
 
                                               =self.log_message),
 
614
            self.add_client(MandosClientWidget(
 
615
                server_proxy_object=self.mandos_serv,
 
616
                proxy_object=client_proxy_object,
 
617
                properties=client,
 
618
                update_hook=self.refresh,
 
619
                delete_hook=self.remove_client),
625
620
                            path=path)
626
 
        
 
621
 
627
622
        self.refresh()
628
 
        self._input_callback_tag = (gobject.io_add_watch
629
 
                                    (sys.stdin.fileno(),
630
 
                                     gobject.IO_IN,
631
 
                                     self.process_input))
 
623
        self._input_callback_tag = (
 
624
            GLib.io_add_watch(
 
625
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
 
626
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
627
                glib_safely(self.process_input)))
632
628
        self.main_loop.run()
633
629
        # Main loop has finished, we should close everything now
634
 
        gobject.source_remove(self._input_callback_tag)
635
 
        self.screen.stop()
636
 
    
 
630
        GLib.source_remove(self._input_callback_tag)
 
631
        with warnings.catch_warnings():
 
632
            warnings.simplefilter("ignore", BytesWarning)
 
633
            self.screen.stop()
 
634
 
637
635
    def stop(self):
638
636
        self.main_loop.quit()
639
 
    
 
637
        log.removeHandler(self.loghandler)
 
638
        log.propagate = self.orig_log_propagate
 
639
 
640
640
    def process_input(self, source, condition):
641
641
        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
 
                         }
 
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
                        }
652
652
        for key in keys:
653
653
            try:
654
654
                key = translations[key]
655
655
            except KeyError:    # :-)
656
656
                pass
657
 
            
 
657
 
658
658
            if key == "q" or key == "Q":
659
659
                self.stop()
660
660
                break
661
661
            elif key == "window resize":
662
662
                self.size = self.screen.get_cols_rows()
663
663
                self.refresh()
664
 
            elif key == "\f":  # Ctrl-L
 
664
            elif key == "ctrl l":
 
665
                self.screen.clear()
665
666
                self.refresh()
666
667
            elif key == "l" or key == "D":
667
668
                self.toggle_log_display()
673
674
                if not self.log_visible:
674
675
                    self.log_visible = True
675
676
                    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 lines)",
683
 
                                            "v: Toggle verbose log",
684
 
                                            ))))
685
 
                self.log_message_raw(("bold",
686
 
                                      "  "
687
 
                                      .join(("Clients:",
688
 
                                             "+: Enable",
689
 
                                             "-: Disable",
690
 
                                             "R: Remove",
691
 
                                             "s: Start new checker",
692
 
                                             "S: Stop checker",
693
 
                                             "C: Checker OK",
694
 
                                             "a: Approve",
695
 
                                             "d: Deny"))))
 
677
                self.add_log_line(("bold",
 
678
                                   "  ".join(("q: Quit",
 
679
                                              "?: Help",
 
680
                                              "l: Log window toggle",
 
681
                                              "TAB: Switch window",
 
682
                                              "w: Wrap (log lines)",
 
683
                                              "v: Toggle verbose log",
 
684
                                   ))))
 
685
                self.add_log_line(("bold",
 
686
                                   "  ".join(("Clients:",
 
687
                                              "+: Enable",
 
688
                                              "-: Disable",
 
689
                                              "R: Remove",
 
690
                                              "s: Start new checker",
 
691
                                              "S: Stop checker",
 
692
                                              "C: Checker OK",
 
693
                                              "a: Approve",
 
694
                                              "d: Deny",
 
695
                                   ))))
696
696
                self.refresh()
697
697
            elif key == "tab":
698
698
                if self.topwidget.get_focus() is self.logbox:
701
701
                    self.topwidget.set_focus(self.logbox)
702
702
                self.refresh()
703
703
            elif key == "v":
704
 
                if self.log_level == 0:
705
 
                    self.log_level = 1
706
 
                    self.log_message("Verbose mode: Off")
 
704
                if log.level < logging.INFO:
 
705
                    log.setLevel(logging.INFO)
 
706
                    log.info("Verbose mode: Off")
707
707
                else:
708
 
                    self.log_level = 0
709
 
                    self.log_message("Verbose mode: On")
710
 
            #elif (key == "end" or key == "meta >" or key == "G"
711
 
            #      or key == ">"):
712
 
            #    pass            # xxx end-of-buffer
713
 
            #elif (key == "home" or key == "meta <" or key == "g"
714
 
            #      or key == "<"):
715
 
            #    pass            # xxx beginning-of-buffer
716
 
            #elif key == "ctrl e" or key == "$":
717
 
            #    pass            # xxx move-end-of-line
718
 
            #elif key == "ctrl a" or key == "^":
719
 
            #    pass            # xxx move-beginning-of-line
720
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
721
 
            #    pass            # xxx left
722
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
723
 
            #    pass            # xxx right
724
 
            #elif key == "a":
725
 
            #    pass            # scroll up log
726
 
            #elif key == "z":
727
 
            #    pass            # scroll down log
 
708
                    log.setLevel(logging.NOTSET)
 
709
                    log.info("Verbose mode: On")
 
710
            # elif (key == "end" or key == "meta >" or key == "G"
 
711
            #       or key == ">"):
 
712
            #     pass            # xxx end-of-buffer
 
713
            # elif (key == "home" or key == "meta <" or key == "g"
 
714
            #       or key == "<"):
 
715
            #     pass            # xxx beginning-of-buffer
 
716
            # elif key == "ctrl e" or key == "$":
 
717
            #     pass            # xxx move-end-of-line
 
718
            # elif key == "ctrl a" or key == "^":
 
719
            #     pass            # xxx move-beginning-of-line
 
720
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
721
            #     pass            # xxx left
 
722
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
723
            #     pass            # xxx right
 
724
            # elif key == "a":
 
725
            #     pass            # scroll up log
 
726
            # elif key == "z":
 
727
            #     pass            # scroll down log
728
728
            elif self.topwidget.selectable():
729
729
                self.topwidget.keypress(self.size, key)
730
730
                self.refresh()
731
731
        return True
732
732
 
 
733
 
 
734
class UILogHandler(logging.Handler):
 
735
    def __init__(self, ui, *args, **kwargs):
 
736
        self.ui = ui
 
737
        super(UILogHandler, self).__init__(*args, **kwargs)
 
738
        self.setFormatter(
 
739
            logging.Formatter("%(asctime)s: %(message)s"))
 
740
    def emit(self, record):
 
741
        msg = self.format(record)
 
742
        if record.levelno > logging.INFO:
 
743
            msg = ("bold", msg)
 
744
        self.ui.add_log_line(msg)
 
745
 
 
746
 
733
747
ui = UserInterface()
734
748
try:
735
749
    ui.run()
736
750
except KeyboardInterrupt:
737
 
    ui.screen.stop()
738
 
except Exception as e:
739
 
    ui.log_message(str(e))
740
 
    ui.screen.stop()
 
751
    with warnings.catch_warnings():
 
752
        warnings.filterwarnings("ignore", "", BytesWarning)
 
753
        ui.screen.stop()
 
754
except Exception:
 
755
    with warnings.catch_warnings():
 
756
        warnings.filterwarnings("ignore", "", BytesWarning)
 
757
        ui.screen.stop()
741
758
    raise