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  • Committer: teddy at recompile
  • Date: 2019-12-04 23:46:59 UTC
  • mto: This revision was merged to the branch mainline in revision 396.
  • Revision ID: teddy@recompile.se-20191204234659-m4u7bxnjrns6d3fc
Simplification of Python 3 compatibility code

Apply previously-made change in mandos and mandos-ctl also to
mandos-monitor.

* mandos-monitor: Set "__metaclass__ = type" globally for Python 2,
  and remove inheriting from "object" in all places possible.

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Lines of Context:
mandos-monitor
1
 
#!/usr/bin/python
 
1
#!/usr/bin/python3 -bbI
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
# 
 
3
#
4
4
# Mandos Monitor - Control and monitor the Mandos server
5
 
# 
6
 
# Copyright © 2009-2012 Teddy Hogeborn
7
 
# Copyright © 2009-2012 Björn Påhlsson
8
 
# 
9
 
# This program is free software: you can redistribute it and/or modify
10
 
# it under the terms of the GNU General Public License as published by
 
5
#
 
6
# Copyright © 2009-2019 Teddy Hogeborn
 
7
# Copyright © 2009-2019 Björn Påhlsson
 
8
#
 
9
# This file is part of Mandos.
 
10
#
 
11
# Mandos is free software: you can redistribute it and/or modify it
 
12
# under the terms of the GNU General Public License as published by
11
13
# the Free Software Foundation, either version 3 of the License, or
12
14
# (at your option) any later version.
13
15
#
14
 
#     This program is distributed in the hope that it will be useful,
15
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
16
#     Mandos is distributed in the hope that it will be useful, but
 
17
#     WITHOUT ANY WARRANTY; without even the implied warranty of
16
18
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
19
#     GNU General Public License for more details.
18
 
# 
 
20
#
19
21
# You should have received a copy of the GNU General Public License
20
 
# along with this program.  If not, see
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)
28
 
 
29
 
from future_builtins import *
 
29
try:
 
30
    from future_builtins import *
 
31
except ImportError:
 
32
    pass
30
33
 
31
34
import sys
32
35
import os
33
 
import signal
34
 
 
 
36
import warnings
35
37
import datetime
 
38
import locale
 
39
import logging
36
40
 
37
41
import urwid.curses_display
38
42
import urwid
39
43
 
40
44
from dbus.mainloop.glib import DBusGMainLoop
41
 
import gobject
 
45
from gi.repository import GLib
42
46
 
43
47
import dbus
44
48
 
45
 
import UserList
46
 
 
47
 
import locale
48
 
 
49
 
locale.setlocale(locale.LC_ALL, '')
50
 
 
51
 
import logging
52
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
 
49
if sys.version_info.major == 2:
 
50
    __metaclass__ = type
 
51
    str = unicode
 
52
 
 
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)
53
62
 
54
63
# Some useful constants
55
 
domain = 'se.recompile'
56
 
server_interface = domain + '.Mandos'
57
 
client_interface = domain + '.Mandos.Client'
58
 
version = "1.5.5"
59
 
 
60
 
# Always run in monochrome mode
61
 
urwid.curses_display.curses.has_colors = lambda : False
62
 
 
63
 
# Urwid doesn't support blinking, but we want it.  Since we have no
64
 
# use for underline on its own, we make underline also always blink.
65
 
urwid.curses_display.curses.A_UNDERLINE |= (
66
 
    urwid.curses_display.curses.A_BLINK)
 
64
domain = "se.recompile"
 
65
server_interface = domain + ".Mandos"
 
66
client_interface = domain + ".Mandos.Client"
 
67
version = "1.8.9"
 
68
 
 
69
try:
 
70
    dbus.OBJECT_MANAGER_IFACE
 
71
except AttributeError:
 
72
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
73
 
67
74
 
68
75
def isoformat_to_datetime(iso):
69
76
    "Parse an ISO 8601 date string to a datetime.datetime()"
78
85
                             int(day),
79
86
                             int(hour),
80
87
                             int(minute),
81
 
                             int(second),           # Whole seconds
82
 
                             int(fraction*1000000)) # Microseconds
83
 
 
84
 
class MandosClientPropertyCache(object):
 
88
                             int(second),            # Whole seconds
 
89
                             int(fraction*1000000))  # Microseconds
 
90
 
 
91
 
 
92
class MandosClientPropertyCache:
85
93
    """This wraps a Mandos Client D-Bus proxy object, caches the
86
94
    properties and calls a hook function when any of them are
87
95
    changed.
88
96
    """
89
97
    def __init__(self, proxy_object=None, properties=None, **kwargs):
90
 
        self.proxy = proxy_object # Mandos Client proxy object
 
98
        self.proxy = proxy_object  # Mandos Client proxy object
91
99
        self.properties = dict() if properties is None else properties
92
100
        self.property_changed_match = (
93
 
            self.proxy.connect_to_signal("PropertyChanged",
94
 
                                         self._property_changed,
95
 
                                         client_interface,
 
101
            self.proxy.connect_to_signal("PropertiesChanged",
 
102
                                         self.properties_changed,
 
103
                                         dbus.PROPERTIES_IFACE,
96
104
                                         byte_arrays=True))
97
 
        
 
105
 
98
106
        if properties is None:
99
 
            self.properties.update(
100
 
                self.proxy.GetAll(client_interface,
101
 
                                  dbus_interface
102
 
                                  = dbus.PROPERTIES_IFACE))
103
 
        
 
107
            self.properties.update(self.proxy.GetAll(
 
108
                client_interface,
 
109
                dbus_interface=dbus.PROPERTIES_IFACE))
 
110
 
104
111
        super(MandosClientPropertyCache, self).__init__(**kwargs)
105
 
    
106
 
    def _property_changed(self, property, value):
107
 
        """Helper which takes positional arguments"""
108
 
        return self.property_changed(property=property, value=value)
109
 
    
110
 
    def property_changed(self, property=None, value=None):
111
 
        """This is called whenever we get a PropertyChanged signal
112
 
        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.
113
116
        """
114
117
        # Update properties dict with new value
115
 
        self.properties[property] = value
116
 
    
 
118
        if interface == client_interface:
 
119
            self.properties.update(properties)
 
120
 
117
121
    def delete(self):
118
122
        self.property_changed_match.remove()
119
123
 
121
125
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
122
126
    """A Mandos Client which is visible on the screen.
123
127
    """
124
 
    
 
128
 
125
129
    def __init__(self, server_proxy_object=None, update_hook=None,
126
 
                 delete_hook=None, logger=None, **kwargs):
 
130
                 delete_hook=None, **kwargs):
127
131
        # Called on update
128
132
        self.update_hook = update_hook
129
133
        # Called on delete
130
134
        self.delete_hook = delete_hook
131
135
        # Mandos Server proxy object
132
136
        self.server_proxy_object = server_proxy_object
133
 
        # Logger
134
 
        self.logger = logger
135
 
        
 
137
 
136
138
        self._update_timer_callback_tag = None
137
 
        
 
139
 
138
140
        # The widget shown normally
139
141
        self._text_widget = urwid.Text("")
140
142
        # The widget shown when we have focus
142
144
        super(MandosClientWidget, self).__init__(**kwargs)
143
145
        self.update()
144
146
        self.opened = False
145
 
        
 
147
 
146
148
        self.match_objects = (
147
149
            self.proxy.connect_to_signal("CheckerCompleted",
148
150
                                         self.checker_completed,
164
166
                                         self.rejected,
165
167
                                         client_interface,
166
168
                                         byte_arrays=True))
167
 
        #self.logger('Created client {0}'
168
 
        #            .format(self.properties["Name"]))
169
 
    
 
169
        log.debug("Created client %s", self.properties["Name"])
 
170
 
170
171
    def using_timer(self, flag):
171
172
        """Call this method with True or False when timer should be
172
173
        activated or deactivated.
173
174
        """
174
175
        if flag and self._update_timer_callback_tag is None:
175
176
            # Will update the shown timer value every second
176
 
            self._update_timer_callback_tag = (gobject.timeout_add
177
 
                                               (1000,
178
 
                                                self.update_timer))
 
177
            self._update_timer_callback_tag = (
 
178
                GLib.timeout_add(1000,
 
179
                                 glib_safely(self.update_timer)))
179
180
        elif not (flag or self._update_timer_callback_tag is None):
180
 
            gobject.source_remove(self._update_timer_callback_tag)
 
181
            GLib.source_remove(self._update_timer_callback_tag)
181
182
            self._update_timer_callback_tag = None
182
 
    
 
183
 
183
184
    def checker_completed(self, exitstatus, condition, command):
184
185
        if exitstatus == 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
 
        """Server signals that a checker started. This could be useful
210
 
           to log in the future. """
211
 
        #self.logger('Client {0} started checker "{1}"'
212
 
        #            .format(self.properties["Name"],
213
 
        #                    unicode(command)))
214
 
        pass
215
 
    
 
202
        """Server signals that a checker started."""
 
203
        log.debug('Client %s started checker "%s"',
 
204
                  self.properties["Name"], command)
 
205
 
216
206
    def got_secret(self):
217
 
        self.logger('Client {0} received its secret'
218
 
                    .format(self.properties["Name"]))
219
 
    
 
207
        log.info("Client %s received its secret",
 
208
                 self.properties["Name"])
 
209
 
220
210
    def need_approval(self, timeout, default):
221
211
        if not default:
222
 
            message = 'Client {0} needs approval within {1} seconds'
 
212
            message = "Client %s needs approval within %f seconds"
223
213
        else:
224
 
            message = 'Client {0} will get its secret in {1} seconds'
225
 
        self.logger(message.format(self.properties["Name"],
226
 
                                   timeout/1000))
227
 
    
 
214
            message = "Client %s will get its secret in %f seconds"
 
215
        log.info(message, self.properties["Name"], timeout/1000)
 
216
 
228
217
    def rejected(self, reason):
229
 
        self.logger('Client {0} was rejected; reason: {1}'
230
 
                    .format(self.properties["Name"], reason))
231
 
    
 
218
        log.info("Client %s was rejected; reason: %s",
 
219
                 self.properties["Name"], reason)
 
220
 
232
221
    def selectable(self):
233
222
        """Make this a "selectable" widget.
234
223
        This overrides the method from urwid.FlowWidget."""
235
224
        return True
236
 
    
 
225
 
237
226
    def rows(self, maxcolrow, focus=False):
238
227
        """How many rows this widget will occupy might depend on
239
228
        whether we have focus or not.
240
229
        This overrides the method from urwid.FlowWidget"""
241
230
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
242
 
    
 
231
 
243
232
    def current_widget(self, focus=False):
244
233
        if focus or self.opened:
245
234
            return self._focus_widget
246
235
        return self._widget
247
 
    
 
236
 
248
237
    def update(self):
249
238
        "Called when what is visible on the screen should be updated."
250
239
        # How to add standout mode to a style
251
 
        with_standout = { "normal": "standout",
252
 
                          "bold": "bold-standout",
253
 
                          "underline-blink":
254
 
                              "underline-blink-standout",
255
 
                          "bold-underline-blink":
256
 
                              "bold-underline-blink-standout",
257
 
                          }
258
 
        
 
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
 
259
248
        # Rebuild focus and non-focus widgets using current properties
260
 
        
 
249
 
261
250
        # Base part of a client. Name!
262
 
        base = '{name}: '.format(name=self.properties["Name"])
 
251
        base = "{name}: ".format(name=self.properties["Name"])
263
252
        if not self.properties["Enabled"]:
264
253
            message = "DISABLED"
265
254
            self.using_timer(False)
266
255
        elif self.properties["ApprovalPending"]:
267
 
            timeout = datetime.timedelta(milliseconds
268
 
                                         = self.properties
269
 
                                         ["ApprovalDelay"])
 
256
            timeout = datetime.timedelta(
 
257
                milliseconds=self.properties["ApprovalDelay"])
270
258
            last_approval_request = isoformat_to_datetime(
271
259
                self.properties["LastApprovalRequest"])
272
260
            if last_approval_request is not None:
276
264
            else:
277
265
                timer = datetime.timedelta()
278
266
            if self.properties["ApprovedByDefault"]:
279
 
                message = "Approval in {0}. (d)eny?"
 
267
                message = "Approval in {}. (d)eny?"
280
268
            else:
281
 
                message = "Denial in {0}. (a)pprove?"
282
 
            message = message.format(unicode(timer).rsplit(".", 1)[0])
 
269
                message = "Denial in {}. (a)pprove?"
 
270
            message = message.format(str(timer).rsplit(".", 1)[0])
283
271
            self.using_timer(True)
284
272
        elif self.properties["LastCheckerStatus"] != 0:
285
273
            # When checker has failed, show timer until client expires
288
276
                timer = datetime.timedelta(0)
289
277
            else:
290
278
                expires = (datetime.datetime.strptime
291
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
279
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
292
280
                timer = max(expires - datetime.datetime.utcnow(),
293
281
                            datetime.timedelta())
294
 
            message = ('A checker has failed! Time until client'
295
 
                       ' gets disabled: {0}'
296
 
                       .format(unicode(timer).rsplit(".", 1)[0]))
 
282
            message = ("A checker has failed! Time until client"
 
283
                       " gets disabled: {}"
 
284
                       .format(str(timer).rsplit(".", 1)[0]))
297
285
            self.using_timer(True)
298
286
        else:
299
287
            message = "enabled"
300
288
            self.using_timer(False)
301
 
        self._text = "{0}{1}".format(base, message)
302
 
        
 
289
        self._text = "{}{}".format(base, message)
 
290
 
303
291
        if not urwid.supports_unicode():
304
292
            self._text = self._text.encode("ascii", "replace")
305
293
        textlist = [("normal", self._text)]
315
303
        # Run update hook, if any
316
304
        if self.update_hook is not None:
317
305
            self.update_hook()
318
 
    
 
306
 
319
307
    def update_timer(self):
320
 
        """called by gobject. Will indefinitely loop until
321
 
        gobject.source_remove() on tag is called"""
 
308
        """called by GLib. Will indefinitely loop until
 
309
        GLib.source_remove() on tag is called
 
310
        """
322
311
        self.update()
323
312
        return True             # Keep calling this
324
 
    
 
313
 
325
314
    def delete(self, **kwargs):
326
315
        if self._update_timer_callback_tag is not None:
327
 
            gobject.source_remove(self._update_timer_callback_tag)
 
316
            GLib.source_remove(self._update_timer_callback_tag)
328
317
            self._update_timer_callback_tag = None
329
318
        for match in self.match_objects:
330
319
            match.remove()
332
321
        if self.delete_hook is not None:
333
322
            self.delete_hook(self)
334
323
        return super(MandosClientWidget, self).delete(**kwargs)
335
 
    
 
324
 
336
325
    def render(self, maxcolrow, focus=False):
337
326
        """Render differently if we have focus.
338
327
        This overrides the method from urwid.FlowWidget"""
339
328
        return self.current_widget(focus).render(maxcolrow,
340
329
                                                 focus=focus)
341
 
    
 
330
 
342
331
    def keypress(self, maxcolrow, key):
343
332
        """Handle keys.
344
333
        This overrides the method from urwid.FlowWidget"""
345
334
        if key == "+":
346
 
            self.proxy.Enable(dbus_interface = client_interface,
347
 
                              ignore_reply=True)
 
335
            self.proxy.Set(client_interface, "Enabled",
 
336
                           dbus.Boolean(True), ignore_reply=True,
 
337
                           dbus_interface=dbus.PROPERTIES_IFACE)
348
338
        elif key == "-":
349
 
            self.proxy.Disable(dbus_interface = client_interface,
350
 
                               ignore_reply=True)
 
339
            self.proxy.Set(client_interface, "Enabled", False,
 
340
                           ignore_reply=True,
 
341
                           dbus_interface=dbus.PROPERTIES_IFACE)
351
342
        elif key == "a":
352
343
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
353
 
                               dbus_interface = client_interface,
 
344
                               dbus_interface=client_interface,
354
345
                               ignore_reply=True)
355
346
        elif key == "d":
356
347
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
357
 
                                  dbus_interface = client_interface,
 
348
                               dbus_interface=client_interface,
358
349
                               ignore_reply=True)
359
350
        elif key == "R" or key == "_" or key == "ctrl k":
360
351
            self.server_proxy_object.RemoveClient(self.proxy
361
352
                                                  .object_path,
362
353
                                                  ignore_reply=True)
363
354
        elif key == "s":
364
 
            self.proxy.StartChecker(dbus_interface = client_interface,
365
 
                                    ignore_reply=True)
 
355
            self.proxy.Set(client_interface, "CheckerRunning",
 
356
                           dbus.Boolean(True), ignore_reply=True,
 
357
                           dbus_interface=dbus.PROPERTIES_IFACE)
366
358
        elif key == "S":
367
 
            self.proxy.StopChecker(dbus_interface = client_interface,
368
 
                                   ignore_reply=True)
 
359
            self.proxy.Set(client_interface, "CheckerRunning",
 
360
                           dbus.Boolean(False), ignore_reply=True,
 
361
                           dbus_interface=dbus.PROPERTIES_IFACE)
369
362
        elif key == "C":
370
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
363
            self.proxy.CheckedOK(dbus_interface=client_interface,
371
364
                                 ignore_reply=True)
372
365
        # xxx
373
366
#         elif key == "p" or key == "=":
378
371
#             self.open()
379
372
        else:
380
373
            return key
381
 
    
382
 
    def property_changed(self, property=None, **kwargs):
383
 
        """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.
384
377
        This overrides the method from MandosClientPropertyCache"""
385
 
        property_name = unicode(property)
386
 
        old_value = self.properties.get(property_name)
387
 
        super(MandosClientWidget, self).property_changed(
388
 
            property=property, **kwargs)
389
 
        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):
390
384
            self.update()
391
385
 
392
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
 
393
397
class ConstrainedListBox(urwid.ListBox):
394
398
    """Like a normal urwid.ListBox, but will consume all "up" or
395
399
    "down" key presses, thus not allowing any containing widgets to
396
400
    use them as an excuse to shift focus away from this widget.
397
401
    """
398
402
    def keypress(self, *args, **kwargs):
399
 
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
403
        ret = (super(ConstrainedListBox, self)
 
404
               .keypress(*args, **kwargs))
400
405
        if ret in ("up", "down"):
401
406
            return
402
407
        return ret
403
408
 
404
409
 
405
 
class UserInterface(object):
 
410
class UserInterface:
406
411
    """This is the entire user interface - the whole screen
407
412
    with boxes, lists of client widgets, etc.
408
413
    """
409
414
    def __init__(self, max_log_length=1000):
410
415
        DBusGMainLoop(set_as_default=True)
411
 
        
 
416
 
412
417
        self.screen = urwid.curses_display.Screen()
413
 
        
 
418
 
414
419
        self.screen.register_palette((
415
420
                ("normal",
416
421
                 "default", "default", None),
417
422
                ("bold",
418
 
                 "default", "default", "bold"),
 
423
                 "bold", "default", "bold"),
419
424
                ("underline-blink",
420
 
                 "default", "default", "underline"),
 
425
                 "underline,blink", "default", "underline,blink"),
421
426
                ("standout",
422
 
                 "default", "default", "standout"),
 
427
                 "standout", "default", "standout"),
423
428
                ("bold-underline-blink",
424
 
                 "default", "default", ("bold", "underline")),
 
429
                 "bold,underline,blink", "default",
 
430
                 "bold,underline,blink"),
425
431
                ("bold-standout",
426
 
                 "default", "default", ("bold", "standout")),
 
432
                 "bold,standout", "default", "bold,standout"),
427
433
                ("underline-blink-standout",
428
 
                 "default", "default", ("underline", "standout")),
 
434
                 "underline,blink,standout", "default",
 
435
                 "underline,blink,standout"),
429
436
                ("bold-underline-blink-standout",
430
 
                 "default", "default", ("bold", "underline",
431
 
                                          "standout")),
 
437
                 "bold,underline,blink,standout", "default",
 
438
                 "bold,underline,blink,standout"),
432
439
                ))
433
 
        
 
440
 
434
441
        if urwid.supports_unicode():
435
 
            self.divider = "─" # \u2500
436
 
            #self.divider = "━" # \u2501
 
442
            self.divider = "─"  # \u2500
437
443
        else:
438
 
            #self.divider = "-" # \u002d
439
 
            self.divider = "_" # \u005f
440
 
        
 
444
            self.divider = "_"  # \u005f
 
445
 
441
446
        self.screen.start()
442
 
        
 
447
 
443
448
        self.size = self.screen.get_cols_rows()
444
 
        
 
449
 
445
450
        self.clients = urwid.SimpleListWalker([])
446
451
        self.clients_dict = {}
447
 
        
 
452
 
448
453
        # We will add Text widgets to this list
449
 
        self.log = []
 
454
        self.log = urwid.SimpleListWalker([])
450
455
        self.max_log_length = max_log_length
451
 
        
 
456
 
452
457
        # We keep a reference to the log widget so we can remove it
453
458
        # from the ListWalker without it getting destroyed
454
459
        self.logbox = ConstrainedListBox(self.log)
455
 
        
 
460
 
456
461
        # This keeps track of whether self.uilist currently has
457
462
        # self.logbox in it or not
458
463
        self.log_visible = True
459
464
        self.log_wrap = "any"
460
 
        
 
465
 
 
466
        self.loghandler = UILogHandler(self)
 
467
 
461
468
        self.rebuild()
462
 
        self.log_message_raw(("bold",
463
 
                              "Mandos Monitor version " + version))
464
 
        self.log_message_raw(("bold",
465
 
                              "q: Quit  ?: Help"))
466
 
        
467
 
        self.busname = domain + '.Mandos'
468
 
        self.main_loop = gobject.MainLoop()
469
 
    
470
 
    def client_not_found(self, fingerprint, address):
471
 
        self.log_message("Client with address {0} and fingerprint"
472
 
                         " {1} could not be found"
473
 
                         .format(address, fingerprint))
474
 
    
 
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
 
475
480
    def rebuild(self):
476
481
        """This rebuilds the User Interface.
477
482
        Call this when the widget layout needs to change"""
478
483
        self.uilist = []
479
 
        #self.uilist.append(urwid.ListBox(self.clients))
 
484
        # self.uilist.append(urwid.ListBox(self.clients))
480
485
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
481
486
                                                          clients),
482
 
                                       #header=urwid.Divider(),
 
487
                                       # header=urwid.Divider(),
483
488
                                       header=None,
484
 
                                       footer=
485
 
                                       urwid.Divider(div_char=
486
 
                                                     self.divider)))
 
489
                                       footer=urwid.Divider(
 
490
                                           div_char=self.divider)))
487
491
        if self.log_visible:
488
492
            self.uilist.append(self.logbox)
489
493
        self.topwidget = urwid.Pile(self.uilist)
490
 
    
491
 
    def log_message(self, message):
492
 
        timestamp = datetime.datetime.now().isoformat()
493
 
        self.log_message_raw(timestamp + ": " + message)
494
 
    
495
 
    def log_message_raw(self, markup):
496
 
        """Add a log message to the log buffer."""
 
494
 
 
495
    def add_log_line(self, markup):
497
496
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
498
 
        if (self.max_log_length
499
 
            and len(self.log) > self.max_log_length):
500
 
            del self.log[0:len(self.log)-self.max_log_length-1]
501
 
        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,
502
501
                              coming_from="above")
503
502
        self.refresh()
504
 
    
 
503
 
505
504
    def toggle_log_display(self):
506
505
        """Toggle visibility of the log buffer."""
507
506
        self.log_visible = not self.log_visible
508
507
        self.rebuild()
509
 
        #self.log_message("Log visibility changed to: "
510
 
        #                 + unicode(self.log_visible))
511
 
    
 
508
        log.debug("Log visibility changed to: %s", self.log_visible)
 
509
 
512
510
    def change_log_display(self):
513
511
        """Change type of log display.
514
512
        Currently, this toggles wrapping of text lines."""
518
516
            self.log_wrap = "clip"
519
517
        for textwidget in self.log:
520
518
            textwidget.set_wrap_mode(self.log_wrap)
521
 
        #self.log_message("Wrap mode: " + self.log_wrap)
522
 
    
523
 
    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):
524
522
        """Find a client by its object path and remove it.
525
 
        
526
 
        This is connected to the ClientRemoved signal from the
 
523
 
 
524
        This is connected to the InterfacesRemoved signal from the
527
525
        Mandos server object."""
 
526
        if client_interface not in interfaces:
 
527
            # Not a Mandos client object; ignore
 
528
            return
528
529
        try:
529
530
            client = self.clients_dict[path]
530
531
        except KeyError:
531
532
            # not found?
532
 
            self.log_message("Unknown client {0!r} ({1!r}) removed"
533
 
                             .format(name, path))
 
533
            log.warning("Unknown client %s removed", path)
534
534
            return
535
535
        client.delete()
536
 
    
537
 
    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
538
546
        client_proxy_object = self.bus.get_object(self.busname, path)
539
 
        self.add_client(MandosClientWidget(server_proxy_object
540
 
                                           =self.mandos_serv,
541
 
                                           proxy_object
542
 
                                           =client_proxy_object,
543
 
                                           update_hook
544
 
                                           =self.refresh,
545
 
                                           delete_hook
546
 
                                           =self.remove_client,
547
 
                                           logger
548
 
                                           =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])),
549
553
                        path=path)
550
 
    
 
554
 
551
555
    def add_client(self, client, path=None):
552
556
        self.clients.append(client)
553
557
        if path is None:
554
558
            path = client.proxy.object_path
555
559
        self.clients_dict[path] = client
556
 
        self.clients.sort(None, lambda c: c.properties["Name"])
 
560
        self.clients.sort(key=lambda c: c.properties["Name"])
557
561
        self.refresh()
558
 
    
 
562
 
559
563
    def remove_client(self, client, path=None):
560
564
        self.clients.remove(client)
561
565
        if path is None:
562
566
            path = client.proxy.object_path
563
567
        del self.clients_dict[path]
564
 
        if not self.clients_dict:
565
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
566
 
            # is completely emptied, we need to recreate it.
567
 
            self.clients = urwid.SimpleListWalker([])
568
 
            self.rebuild()
569
568
        self.refresh()
570
 
    
 
569
 
571
570
    def refresh(self):
572
571
        """Redraw the screen"""
573
572
        canvas = self.topwidget.render(self.size, focus=True)
574
573
        self.screen.draw_screen(self.size, canvas)
575
 
    
 
574
 
576
575
    def run(self):
577
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")
578
582
        self.bus = dbus.SystemBus()
579
583
        mandos_dbus_objc = self.bus.get_object(
580
584
            self.busname, "/", follow_name_owner_changes=True)
581
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
582
 
                                          dbus_interface
583
 
                                          = server_interface)
 
585
        self.mandos_serv = dbus.Interface(
 
586
            mandos_dbus_objc, dbus_interface=server_interface)
584
587
        try:
585
588
            mandos_clients = (self.mandos_serv
586
589
                              .GetAllClientsWithProperties())
 
590
            if not mandos_clients:
 
591
                log.warning("Note: Server has no clients.")
587
592
        except dbus.exceptions.DBusException:
 
593
            log.warning("Note: No Mandos server running.")
588
594
            mandos_clients = dbus.Dictionary()
589
 
        
 
595
 
590
596
        (self.mandos_serv
591
 
         .connect_to_signal("ClientRemoved",
 
597
         .connect_to_signal("InterfacesRemoved",
592
598
                            self.find_and_remove_client,
593
 
                            dbus_interface=server_interface,
 
599
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
594
600
                            byte_arrays=True))
595
601
        (self.mandos_serv
596
 
         .connect_to_signal("ClientAdded",
 
602
         .connect_to_signal("InterfacesAdded",
597
603
                            self.add_new_client,
598
 
                            dbus_interface=server_interface,
 
604
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
599
605
                            byte_arrays=True))
600
606
        (self.mandos_serv
601
607
         .connect_to_signal("ClientNotFound",
602
608
                            self.client_not_found,
603
609
                            dbus_interface=server_interface,
604
610
                            byte_arrays=True))
605
 
        for path, client in mandos_clients.iteritems():
 
611
        for path, client in mandos_clients.items():
606
612
            client_proxy_object = self.bus.get_object(self.busname,
607
613
                                                      path)
608
 
            self.add_client(MandosClientWidget(server_proxy_object
609
 
                                               =self.mandos_serv,
610
 
                                               proxy_object
611
 
                                               =client_proxy_object,
612
 
                                               properties=client,
613
 
                                               update_hook
614
 
                                               =self.refresh,
615
 
                                               delete_hook
616
 
                                               =self.remove_client,
617
 
                                               logger
618
 
                                               =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),
619
620
                            path=path)
620
 
        
 
621
 
621
622
        self.refresh()
622
 
        self._input_callback_tag = (gobject.io_add_watch
623
 
                                    (sys.stdin.fileno(),
624
 
                                     gobject.IO_IN,
625
 
                                     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)))
626
628
        self.main_loop.run()
627
629
        # Main loop has finished, we should close everything now
628
 
        gobject.source_remove(self._input_callback_tag)
629
 
        self.screen.stop()
630
 
    
 
630
        GLib.source_remove(self._input_callback_tag)
 
631
        with warnings.catch_warnings():
 
632
            warnings.simplefilter("ignore", BytesWarning)
 
633
            self.screen.stop()
 
634
 
631
635
    def stop(self):
632
636
        self.main_loop.quit()
633
 
    
 
637
        log.removeHandler(self.loghandler)
 
638
        log.propagate = self.orig_log_propagate
 
639
 
634
640
    def process_input(self, source, condition):
635
641
        keys = self.screen.get_input()
636
 
        translations = { "ctrl n": "down",      # Emacs
637
 
                         "ctrl p": "up",        # Emacs
638
 
                         "ctrl v": "page down", # Emacs
639
 
                         "meta v": "page up",   # Emacs
640
 
                         " ": "page down",      # less
641
 
                         "f": "page down",      # less
642
 
                         "b": "page up",        # less
643
 
                         "j": "down",           # vi
644
 
                         "k": "up",             # vi
645
 
                         }
 
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
                        }
646
652
        for key in keys:
647
653
            try:
648
654
                key = translations[key]
649
655
            except KeyError:    # :-)
650
656
                pass
651
 
            
 
657
 
652
658
            if key == "q" or key == "Q":
653
659
                self.stop()
654
660
                break
655
661
            elif key == "window resize":
656
662
                self.size = self.screen.get_cols_rows()
657
663
                self.refresh()
658
 
            elif key == "\f":  # Ctrl-L
 
664
            elif key == "ctrl l":
 
665
                self.screen.clear()
659
666
                self.refresh()
660
667
            elif key == "l" or key == "D":
661
668
                self.toggle_log_display()
667
674
                if not self.log_visible:
668
675
                    self.log_visible = True
669
676
                    self.rebuild()
670
 
                self.log_message_raw(("bold",
671
 
                                      "  ".
672
 
                                      join(("q: Quit",
673
 
                                            "?: Help",
674
 
                                            "l: Log window toggle",
675
 
                                            "TAB: Switch window",
676
 
                                            "w: Wrap (log)"))))
677
 
                self.log_message_raw(("bold",
678
 
                                      "  "
679
 
                                      .join(("Clients:",
680
 
                                             "+: Enable",
681
 
                                             "-: Disable",
682
 
                                             "R: Remove",
683
 
                                             "s: Start new checker",
684
 
                                             "S: Stop checker",
685
 
                                             "C: Checker OK",
686
 
                                             "a: Approve",
687
 
                                             "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
                                   ))))
688
696
                self.refresh()
689
697
            elif key == "tab":
690
698
                if self.topwidget.get_focus() is self.logbox:
692
700
                else:
693
701
                    self.topwidget.set_focus(self.logbox)
694
702
                self.refresh()
695
 
            #elif (key == "end" or key == "meta >" or key == "G"
696
 
            #      or key == ">"):
697
 
            #    pass            # xxx end-of-buffer
698
 
            #elif (key == "home" or key == "meta <" or key == "g"
699
 
            #      or key == "<"):
700
 
            #    pass            # xxx beginning-of-buffer
701
 
            #elif key == "ctrl e" or key == "$":
702
 
            #    pass            # xxx move-end-of-line
703
 
            #elif key == "ctrl a" or key == "^":
704
 
            #    pass            # xxx move-beginning-of-line
705
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
706
 
            #    pass            # xxx left
707
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
708
 
            #    pass            # xxx right
709
 
            #elif key == "a":
710
 
            #    pass            # scroll up log
711
 
            #elif key == "z":
712
 
            #    pass            # scroll down log
 
703
            elif key == "v":
 
704
                if log.level < logging.INFO:
 
705
                    log.setLevel(logging.INFO)
 
706
                    log.info("Verbose mode: Off")
 
707
                else:
 
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
713
728
            elif self.topwidget.selectable():
714
729
                self.topwidget.keypress(self.size, key)
715
730
                self.refresh()
716
731
        return True
717
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
 
718
747
ui = UserInterface()
719
748
try:
720
749
    ui.run()
721
750
except KeyboardInterrupt:
722
 
    ui.screen.stop()
723
 
except Exception, e:
724
 
    ui.log_message(unicode(e))
725
 
    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()
726
758
    raise