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1
 
#!/usr/bin/python3 -bb
 
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
#
 
3
4
4
# Mandos Monitor - Control and monitor the Mandos server
5
 
#
6
 
# Copyright © 2009-2019 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
 
5
 
6
# Copyright © 2009-2011 Teddy Hogeborn
 
7
# Copyright © 2009-2011 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
13
11
# the Free Software Foundation, either version 3 of the License, or
14
12
# (at your option) any later version.
15
13
#
16
 
#     Mandos is distributed in the hope that it will be useful, but
17
 
#     WITHOUT ANY WARRANTY; without even the implied warranty of
 
14
#     This program is distributed in the hope that it will be useful,
 
15
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
18
16
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19
17
#     GNU General Public License for more details.
20
 
#
 
18
21
19
# You should have received a copy of the GNU General Public License
22
 
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
23
 
#
24
 
# Contact the authors at <mandos@recompile.se>.
25
 
#
 
20
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
21
 
22
# Contact the authors at <mandos@fukt.bsnet.se>.
 
23
26
24
 
27
 
from __future__ import (division, absolute_import, print_function,
28
 
                        unicode_literals)
29
 
try:
30
 
    from future_builtins import *
31
 
except ImportError:
32
 
    pass
 
25
from __future__ import division, absolute_import, print_function, unicode_literals
33
26
 
34
27
import sys
35
28
import os
36
 
import warnings
 
29
import signal
 
30
 
37
31
import datetime
38
32
 
39
33
import urwid.curses_display
40
34
import urwid
41
35
 
42
36
from dbus.mainloop.glib import DBusGMainLoop
43
 
from gi.repository import GLib
 
37
import gobject
44
38
 
45
39
import dbus
46
40
 
 
41
import UserList
 
42
 
47
43
import locale
48
44
 
 
45
locale.setlocale(locale.LC_ALL, '')
 
46
 
49
47
import logging
50
 
 
51
 
if sys.version_info.major == 2:
52
 
    str = unicode
53
 
 
54
 
locale.setlocale(locale.LC_ALL, '')
55
 
 
56
48
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
57
49
 
58
50
# Some useful constants
59
 
domain = 'se.recompile'
 
51
domain = 'se.bsnet.fukt'
60
52
server_interface = domain + '.Mandos'
61
53
client_interface = domain + '.Mandos.Client'
62
 
version = "1.8.9"
63
 
 
64
 
try:
65
 
    dbus.OBJECT_MANAGER_IFACE
66
 
except AttributeError:
67
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
68
 
 
 
54
version = "1.2.3"
 
55
 
 
56
# Always run in monochrome mode
 
57
urwid.curses_display.curses.has_colors = lambda : False
 
58
 
 
59
# Urwid doesn't support blinking, but we want it.  Since we have no
 
60
# use for underline on its own, we make underline also always blink.
 
61
urwid.curses_display.curses.A_UNDERLINE |= (
 
62
    urwid.curses_display.curses.A_BLINK)
69
63
 
70
64
def isoformat_to_datetime(iso):
71
65
    "Parse an ISO 8601 date string to a datetime.datetime()"
80
74
                             int(day),
81
75
                             int(hour),
82
76
                             int(minute),
83
 
                             int(second),            # Whole seconds
84
 
                             int(fraction*1000000))  # Microseconds
85
 
 
 
77
                             int(second),           # Whole seconds
 
78
                             int(fraction*1000000)) # Microseconds
86
79
 
87
80
class MandosClientPropertyCache(object):
88
81
    """This wraps a Mandos Client D-Bus proxy object, caches the
89
82
    properties and calls a hook function when any of them are
90
83
    changed.
91
84
    """
92
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
93
 
        self.proxy = proxy_object  # Mandos Client proxy object
94
 
        self.properties = dict() if properties is None else properties
95
 
        self.property_changed_match = (
96
 
            self.proxy.connect_to_signal("PropertiesChanged",
97
 
                                         self.properties_changed,
98
 
                                         dbus.PROPERTIES_IFACE,
99
 
                                         byte_arrays=True))
100
 
 
101
 
        if properties is None:
102
 
            self.properties.update(self.proxy.GetAll(
103
 
                client_interface,
104
 
                dbus_interface=dbus.PROPERTIES_IFACE))
105
 
 
106
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
107
 
 
108
 
    def properties_changed(self, interface, properties, invalidated):
109
 
        """This is called whenever we get a PropertiesChanged signal
110
 
        It updates the changed properties in the "properties" dict.
 
85
    def __init__(self, proxy_object=None, *args, **kwargs):
 
86
        self.proxy = proxy_object # Mandos Client proxy object
 
87
        
 
88
        self.properties = dict()
 
89
        self.proxy.connect_to_signal("PropertyChanged",
 
90
                                     self.property_changed,
 
91
                                     client_interface,
 
92
                                     byte_arrays=True)
 
93
        
 
94
        self.properties.update(
 
95
            self.proxy.GetAll(client_interface,
 
96
                              dbus_interface = dbus.PROPERTIES_IFACE))
 
97
 
 
98
        #XXX This break good super behaviour!
 
99
#        super(MandosClientPropertyCache, self).__init__(
 
100
#            *args, **kwargs)
 
101
    
 
102
    def property_changed(self, property=None, value=None):
 
103
        """This is called whenever we get a PropertyChanged signal
 
104
        It updates the changed property in the "properties" dict.
111
105
        """
112
106
        # Update properties dict with new value
113
 
        if interface == client_interface:
114
 
            self.properties.update(properties)
115
 
 
116
 
    def delete(self):
117
 
        self.property_changed_match.remove()
 
107
        self.properties[property] = value
118
108
 
119
109
 
120
110
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
121
111
    """A Mandos Client which is visible on the screen.
122
112
    """
123
 
 
 
113
    
124
114
    def __init__(self, server_proxy_object=None, update_hook=None,
125
 
                 delete_hook=None, logger=None, **kwargs):
 
115
                 delete_hook=None, logger=None, *args, **kwargs):
126
116
        # Called on update
127
117
        self.update_hook = update_hook
128
118
        # Called on delete
131
121
        self.server_proxy_object = server_proxy_object
132
122
        # Logger
133
123
        self.logger = logger
134
 
 
 
124
        
135
125
        self._update_timer_callback_tag = None
136
 
 
 
126
        self._update_timer_callback_lock = 0
 
127
        self.last_checker_failed = False
 
128
        
137
129
        # The widget shown normally
138
130
        self._text_widget = urwid.Text("")
139
131
        # The widget shown when we have focus
140
132
        self._focus_text_widget = urwid.Text("")
141
 
        super(MandosClientWidget, self).__init__(**kwargs)
 
133
        super(MandosClientWidget, self).__init__(
 
134
            update_hook=update_hook, delete_hook=delete_hook,
 
135
            *args, **kwargs)
142
136
        self.update()
143
137
        self.opened = False
144
 
 
145
 
        self.match_objects = (
146
 
            self.proxy.connect_to_signal("CheckerCompleted",
147
 
                                         self.checker_completed,
148
 
                                         client_interface,
149
 
                                         byte_arrays=True),
150
 
            self.proxy.connect_to_signal("CheckerStarted",
151
 
                                         self.checker_started,
152
 
                                         client_interface,
153
 
                                         byte_arrays=True),
154
 
            self.proxy.connect_to_signal("GotSecret",
155
 
                                         self.got_secret,
156
 
                                         client_interface,
157
 
                                         byte_arrays=True),
158
 
            self.proxy.connect_to_signal("NeedApproval",
159
 
                                         self.need_approval,
160
 
                                         client_interface,
161
 
                                         byte_arrays=True),
162
 
            self.proxy.connect_to_signal("Rejected",
163
 
                                         self.rejected,
164
 
                                         client_interface,
165
 
                                         byte_arrays=True))
166
 
        self.logger('Created client {}'
167
 
                    .format(self.properties["Name"]), level=0)
168
 
 
 
138
        
 
139
        last_checked_ok = isoformat_to_datetime(self.properties
 
140
                                                ["LastCheckedOK"])
 
141
        if last_checked_ok is None:
 
142
            self.last_checker_failed = True
 
143
        else:
 
144
            self.last_checker_failed = ((datetime.datetime.utcnow()
 
145
                                         - last_checked_ok)
 
146
                                        > datetime.timedelta
 
147
                                        (milliseconds=
 
148
                                         self.properties
 
149
                                         ["Interval"]))
 
150
        
 
151
        if self.last_checker_failed:
 
152
            self.using_timer(True)
 
153
        
 
154
        if self.need_approval:
 
155
            self.using_timer(True)
 
156
        
 
157
        self.proxy.connect_to_signal("CheckerCompleted",
 
158
                                     self.checker_completed,
 
159
                                     client_interface,
 
160
                                     byte_arrays=True)
 
161
        self.proxy.connect_to_signal("CheckerStarted",
 
162
                                     self.checker_started,
 
163
                                     client_interface,
 
164
                                     byte_arrays=True)
 
165
        self.proxy.connect_to_signal("GotSecret",
 
166
                                     self.got_secret,
 
167
                                     client_interface,
 
168
                                     byte_arrays=True)
 
169
        self.proxy.connect_to_signal("NeedApproval",
 
170
                                     self.need_approval,
 
171
                                     client_interface,
 
172
                                     byte_arrays=True)
 
173
        self.proxy.connect_to_signal("Rejected",
 
174
                                     self.rejected,
 
175
                                     client_interface,
 
176
                                     byte_arrays=True)
 
177
    
 
178
    def property_changed(self, property=None, value=None):
 
179
        super(self, MandosClientWidget).property_changed(property,
 
180
                                                         value)
 
181
        if property == "ApprovalPending":
 
182
            using_timer(bool(value))
 
183
        
169
184
    def using_timer(self, flag):
170
185
        """Call this method with True or False when timer should be
171
186
        activated or deactivated.
172
187
        """
173
 
        if flag and self._update_timer_callback_tag is None:
174
 
            # Will update the shown timer value every second
175
 
            self._update_timer_callback_tag = (GLib.timeout_add
 
188
        old = self._update_timer_callback_lock
 
189
        if flag:
 
190
            self._update_timer_callback_lock += 1
 
191
        else:
 
192
            self._update_timer_callback_lock -= 1
 
193
        if old == 0 and self._update_timer_callback_lock:
 
194
            self._update_timer_callback_tag = (gobject.timeout_add
176
195
                                               (1000,
177
196
                                                self.update_timer))
178
 
        elif not (flag or self._update_timer_callback_tag is None):
179
 
            GLib.source_remove(self._update_timer_callback_tag)
 
197
        elif old and self._update_timer_callback_lock == 0:
 
198
            gobject.source_remove(self._update_timer_callback_tag)
180
199
            self._update_timer_callback_tag = None
181
 
 
 
200
    
182
201
    def checker_completed(self, exitstatus, condition, command):
183
202
        if exitstatus == 0:
184
 
            self.logger('Checker for client {} (command "{}")'
185
 
                        ' succeeded'.format(self.properties["Name"],
186
 
                                            command), level=0)
 
203
            if self.last_checker_failed:
 
204
                self.last_checker_failed = False
 
205
                self.using_timer(False)
 
206
            #self.logger('Checker for client %s (command "%s")'
 
207
            #            ' was successful'
 
208
            #            % (self.properties["Name"], command))
187
209
            self.update()
188
210
            return
189
211
        # Checker failed
 
212
        if not self.last_checker_failed:
 
213
            self.last_checker_failed = True
 
214
            self.using_timer(True)
190
215
        if os.WIFEXITED(condition):
191
 
            self.logger('Checker for client {} (command "{}") failed'
192
 
                        ' with exit code {}'
193
 
                        .format(self.properties["Name"], command,
194
 
                                os.WEXITSTATUS(condition)))
 
216
            self.logger('Checker for client %s (command "%s")'
 
217
                        ' failed with exit code %s'
 
218
                        % (self.properties["Name"], command,
 
219
                           os.WEXITSTATUS(condition)))
195
220
        elif os.WIFSIGNALED(condition):
196
 
            self.logger('Checker for client {} (command "{}") was'
197
 
                        ' killed by signal {}'
198
 
                        .format(self.properties["Name"], command,
199
 
                                os.WTERMSIG(condition)))
 
221
            self.logger('Checker for client %s (command "%s")'
 
222
                        ' was killed by signal %s'
 
223
                        % (self.properties["Name"], command,
 
224
                           os.WTERMSIG(condition)))
 
225
        elif os.WCOREDUMP(condition):
 
226
            self.logger('Checker for client %s (command "%s")'
 
227
                        ' dumped core'
 
228
                        % (self.properties["Name"], command))
 
229
        else:
 
230
            self.logger('Checker for client %s completed'
 
231
                        ' mysteriously')
200
232
        self.update()
201
 
 
 
233
    
202
234
    def checker_started(self, command):
203
 
        """Server signals that a checker started."""
204
 
        self.logger('Client {} started checker "{}"'
205
 
                    .format(self.properties["Name"],
206
 
                            command), level=0)
207
 
 
 
235
        #self.logger('Client %s started checker "%s"'
 
236
        #            % (self.properties["Name"], unicode(command)))
 
237
        pass
 
238
    
208
239
    def got_secret(self):
209
 
        self.logger('Client {} received its secret'
210
 
                    .format(self.properties["Name"]))
211
 
 
 
240
        self.last_checker_failed = False
 
241
        self.logger('Client %s received its secret'
 
242
                    % self.properties["Name"])
 
243
    
212
244
    def need_approval(self, timeout, default):
213
245
        if not default:
214
 
            message = 'Client {} needs approval within {} seconds'
 
246
            message = 'Client %s needs approval within %s seconds'
215
247
        else:
216
 
            message = 'Client {} will get its secret in {} seconds'
217
 
        self.logger(message.format(self.properties["Name"],
218
 
                                   timeout/1000))
219
 
 
 
248
            message = 'Client %s will get its secret in %s seconds'
 
249
        self.logger(message
 
250
                    % (self.properties["Name"], timeout/1000))
 
251
        self.using_timer(True)
 
252
    
220
253
    def rejected(self, reason):
221
 
        self.logger('Client {} was rejected; reason: {}'
222
 
                    .format(self.properties["Name"], reason))
223
 
 
 
254
        self.logger('Client %s was rejected; reason: %s'
 
255
                    % (self.properties["Name"], reason))
 
256
    
224
257
    def selectable(self):
225
258
        """Make this a "selectable" widget.
226
259
        This overrides the method from urwid.FlowWidget."""
227
260
        return True
228
 
 
 
261
    
229
262
    def rows(self, maxcolrow, focus=False):
230
263
        """How many rows this widget will occupy might depend on
231
264
        whether we have focus or not.
232
265
        This overrides the method from urwid.FlowWidget"""
233
266
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
234
 
 
 
267
    
235
268
    def current_widget(self, focus=False):
236
269
        if focus or self.opened:
237
270
            return self._focus_widget
238
271
        return self._widget
239
 
 
 
272
    
240
273
    def update(self):
241
274
        "Called when what is visible on the screen should be updated."
242
275
        # How to add standout mode to a style
243
 
        with_standout = {"normal": "standout",
244
 
                         "bold": "bold-standout",
245
 
                         "underline-blink":
246
 
                         "underline-blink-standout",
247
 
                         "bold-underline-blink":
248
 
                         "bold-underline-blink-standout",
249
 
                         }
 
276
        with_standout = { "normal": "standout",
 
277
                          "bold": "bold-standout",
 
278
                          "underline-blink":
 
279
                              "underline-blink-standout",
 
280
                          "bold-underline-blink":
 
281
                              "bold-underline-blink-standout",
 
282
                          }
250
283
 
251
284
        # Rebuild focus and non-focus widgets using current properties
252
285
 
253
286
        # Base part of a client. Name!
254
 
        base = '{name}: '.format(name=self.properties["Name"])
 
287
        base = ('%(name)s: '
 
288
                      % {"name": self.properties["Name"]})
255
289
        if not self.properties["Enabled"]:
256
290
            message = "DISABLED"
257
 
            self.using_timer(False)
258
291
        elif self.properties["ApprovalPending"]:
259
 
            timeout = datetime.timedelta(
260
 
                milliseconds=self.properties["ApprovalDelay"])
 
292
            timeout = datetime.timedelta(milliseconds
 
293
                                         = self.properties
 
294
                                         ["ApprovalDelay"])
261
295
            last_approval_request = isoformat_to_datetime(
262
296
                self.properties["LastApprovalRequest"])
263
297
            if last_approval_request is not None:
264
 
                timer = max(timeout - (datetime.datetime.utcnow()
265
 
                                       - last_approval_request),
266
 
                            datetime.timedelta())
 
298
                timer = timeout - (datetime.datetime.utcnow()
 
299
                                   - last_approval_request)
267
300
            else:
268
301
                timer = datetime.timedelta()
269
302
            if self.properties["ApprovedByDefault"]:
270
 
                message = "Approval in {}. (d)eny?"
271
 
            else:
272
 
                message = "Denial in {}. (a)pprove?"
273
 
            message = message.format(str(timer).rsplit(".", 1)[0])
274
 
            self.using_timer(True)
275
 
        elif self.properties["LastCheckerStatus"] != 0:
276
 
            # When checker has failed, show timer until client expires
277
 
            expires = self.properties["Expires"]
278
 
            if expires == "":
279
 
                timer = datetime.timedelta(0)
280
 
            else:
281
 
                expires = (datetime.datetime.strptime
282
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
283
 
                timer = max(expires - datetime.datetime.utcnow(),
284
 
                            datetime.timedelta())
 
303
                message = "Approval in %s. (d)eny?"
 
304
            else:
 
305
                message = "Denial in %s. (a)pprove?"
 
306
            message = message % unicode(timer).rsplit(".", 1)[0]
 
307
        elif self.last_checker_failed:
 
308
            timeout = datetime.timedelta(milliseconds
 
309
                                         = self.properties
 
310
                                         ["Timeout"])
 
311
            last_ok = isoformat_to_datetime(
 
312
                max((self.properties["LastCheckedOK"]
 
313
                     or self.properties["Created"]),
 
314
                    self.properties["LastEnabled"]))
 
315
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
285
316
            message = ('A checker has failed! Time until client'
286
 
                       ' gets disabled: {}'
287
 
                       .format(str(timer).rsplit(".", 1)[0]))
288
 
            self.using_timer(True)
 
317
                       ' gets disabled: %s'
 
318
                           % unicode(timer).rsplit(".", 1)[0])
289
319
        else:
290
320
            message = "enabled"
291
 
            self.using_timer(False)
292
 
        self._text = "{}{}".format(base, message)
293
 
 
 
321
        self._text = "%s%s" % (base, message)
 
322
            
294
323
        if not urwid.supports_unicode():
295
324
            self._text = self._text.encode("ascii", "replace")
296
325
        textlist = [("normal", self._text)]
306
335
        # Run update hook, if any
307
336
        if self.update_hook is not None:
308
337
            self.update_hook()
309
 
 
 
338
    
310
339
    def update_timer(self):
311
 
        """called by GLib. Will indefinitely loop until
312
 
        GLib.source_remove() on tag is called
313
 
        """
 
340
        "called by gobject"
314
341
        self.update()
315
342
        return True             # Keep calling this
316
 
 
317
 
    def delete(self, **kwargs):
 
343
    
 
344
    def delete(self):
318
345
        if self._update_timer_callback_tag is not None:
319
 
            GLib.source_remove(self._update_timer_callback_tag)
 
346
            gobject.source_remove(self._update_timer_callback_tag)
320
347
            self._update_timer_callback_tag = None
321
 
        for match in self.match_objects:
322
 
            match.remove()
323
 
        self.match_objects = ()
324
348
        if self.delete_hook is not None:
325
349
            self.delete_hook(self)
326
 
        return super(MandosClientWidget, self).delete(**kwargs)
327
 
 
 
350
    
328
351
    def render(self, maxcolrow, focus=False):
329
352
        """Render differently if we have focus.
330
353
        This overrides the method from urwid.FlowWidget"""
331
354
        return self.current_widget(focus).render(maxcolrow,
332
355
                                                 focus=focus)
333
 
 
 
356
    
334
357
    def keypress(self, maxcolrow, key):
335
358
        """Handle keys.
336
359
        This overrides the method from urwid.FlowWidget"""
337
360
        if key == "+":
338
 
            self.proxy.Set(client_interface, "Enabled",
339
 
                           dbus.Boolean(True), ignore_reply=True,
340
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
361
            self.proxy.Enable(dbus_interface = client_interface)
341
362
        elif key == "-":
342
 
            self.proxy.Set(client_interface, "Enabled", False,
343
 
                           ignore_reply=True,
344
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
363
            self.proxy.Disable(dbus_interface = client_interface)
345
364
        elif key == "a":
346
365
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
347
 
                               dbus_interface=client_interface,
348
 
                               ignore_reply=True)
 
366
                               dbus_interface = client_interface)
349
367
        elif key == "d":
350
368
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
351
 
                               dbus_interface=client_interface,
352
 
                               ignore_reply=True)
 
369
                                  dbus_interface = client_interface)
353
370
        elif key == "R" or key == "_" or key == "ctrl k":
354
371
            self.server_proxy_object.RemoveClient(self.proxy
355
 
                                                  .object_path,
356
 
                                                  ignore_reply=True)
 
372
                                                  .object_path)
357
373
        elif key == "s":
358
 
            self.proxy.Set(client_interface, "CheckerRunning",
359
 
                           dbus.Boolean(True), ignore_reply=True,
360
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
374
            self.proxy.StartChecker(dbus_interface = client_interface)
361
375
        elif key == "S":
362
 
            self.proxy.Set(client_interface, "CheckerRunning",
363
 
                           dbus.Boolean(False), ignore_reply=True,
364
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
376
            self.proxy.StopChecker(dbus_interface = client_interface)
365
377
        elif key == "C":
366
 
            self.proxy.CheckedOK(dbus_interface=client_interface,
367
 
                                 ignore_reply=True)
 
378
            self.proxy.CheckedOK(dbus_interface = client_interface)
368
379
        # xxx
369
380
#         elif key == "p" or key == "=":
370
381
#             self.proxy.pause()
374
385
#             self.open()
375
386
        else:
376
387
            return key
377
 
 
378
 
    def properties_changed(self, interface, properties, invalidated):
379
 
        """Call self.update() if any properties changed.
 
388
    
 
389
    def property_changed(self, property=None, value=None,
 
390
                         *args, **kwargs):
 
391
        """Call self.update() if old value is not new value.
380
392
        This overrides the method from MandosClientPropertyCache"""
381
 
        old_values = {key: self.properties.get(key)
382
 
                      for key in properties.keys()}
383
 
        super(MandosClientWidget, self).properties_changed(
384
 
            interface, properties, invalidated)
385
 
        if any(old_values[key] != self.properties.get(key)
386
 
               for key in old_values):
 
393
        property_name = unicode(property)
 
394
        old_value = self.properties.get(property_name)
 
395
        super(MandosClientWidget, self).property_changed(
 
396
            property=property, value=value, *args, **kwargs)
 
397
        if self.properties.get(property_name) != old_value:
387
398
            self.update()
388
399
 
389
400
 
392
403
    "down" key presses, thus not allowing any containing widgets to
393
404
    use them as an excuse to shift focus away from this widget.
394
405
    """
395
 
    def keypress(self, *args, **kwargs):
396
 
        ret = (super(ConstrainedListBox, self)
397
 
               .keypress(*args, **kwargs))
 
406
    def keypress(self, maxcolrow, key):
 
407
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
398
408
        if ret in ("up", "down"):
399
409
            return
400
410
        return ret
404
414
    """This is the entire user interface - the whole screen
405
415
    with boxes, lists of client widgets, etc.
406
416
    """
407
 
    def __init__(self, max_log_length=1000, log_level=1):
 
417
    def __init__(self, max_log_length=1000):
408
418
        DBusGMainLoop(set_as_default=True)
409
 
 
 
419
        
410
420
        self.screen = urwid.curses_display.Screen()
411
 
 
 
421
        
412
422
        self.screen.register_palette((
413
423
                ("normal",
414
424
                 "default", "default", None),
415
425
                ("bold",
416
 
                 "bold", "default", "bold"),
 
426
                 "default", "default", "bold"),
417
427
                ("underline-blink",
418
 
                 "underline,blink", "default", "underline,blink"),
 
428
                 "default", "default", "underline"),
419
429
                ("standout",
420
 
                 "standout", "default", "standout"),
 
430
                 "default", "default", "standout"),
421
431
                ("bold-underline-blink",
422
 
                 "bold,underline,blink", "default",
423
 
                 "bold,underline,blink"),
 
432
                 "default", "default", ("bold", "underline")),
424
433
                ("bold-standout",
425
 
                 "bold,standout", "default", "bold,standout"),
 
434
                 "default", "default", ("bold", "standout")),
426
435
                ("underline-blink-standout",
427
 
                 "underline,blink,standout", "default",
428
 
                 "underline,blink,standout"),
 
436
                 "default", "default", ("underline", "standout")),
429
437
                ("bold-underline-blink-standout",
430
 
                 "bold,underline,blink,standout", "default",
431
 
                 "bold,underline,blink,standout"),
 
438
                 "default", "default", ("bold", "underline",
 
439
                                          "standout")),
432
440
                ))
433
 
 
 
441
        
434
442
        if urwid.supports_unicode():
435
 
            self.divider = "─"  # \u2500
 
443
            self.divider = "─" # \u2500
 
444
            #self.divider = "━" # \u2501
436
445
        else:
437
 
            self.divider = "_"  # \u005f
438
 
 
 
446
            #self.divider = "-" # \u002d
 
447
            self.divider = "_" # \u005f
 
448
        
439
449
        self.screen.start()
440
 
 
 
450
        
441
451
        self.size = self.screen.get_cols_rows()
442
 
 
 
452
        
443
453
        self.clients = urwid.SimpleListWalker([])
444
454
        self.clients_dict = {}
445
 
 
 
455
        
446
456
        # We will add Text widgets to this list
447
 
        self.log = urwid.SimpleListWalker([])
 
457
        self.log = []
448
458
        self.max_log_length = max_log_length
449
 
 
450
 
        self.log_level = log_level
451
 
 
 
459
        
452
460
        # We keep a reference to the log widget so we can remove it
453
461
        # from the ListWalker without it getting destroyed
454
462
        self.logbox = ConstrainedListBox(self.log)
455
 
 
 
463
        
456
464
        # This keeps track of whether self.uilist currently has
457
465
        # self.logbox in it or not
458
466
        self.log_visible = True
459
467
        self.log_wrap = "any"
460
 
 
 
468
        
461
469
        self.rebuild()
462
470
        self.log_message_raw(("bold",
463
471
                              "Mandos Monitor version " + version))
464
472
        self.log_message_raw(("bold",
465
473
                              "q: Quit  ?: Help"))
466
 
 
 
474
        
467
475
        self.busname = domain + '.Mandos'
468
 
        self.main_loop = GLib.MainLoop()
469
 
 
470
 
    def client_not_found(self, key_id, address):
471
 
        self.log_message("Client with address {} and key ID {} could"
472
 
                         " not be found".format(address, key_id))
473
 
 
 
476
        self.main_loop = gobject.MainLoop()
 
477
        self.bus = dbus.SystemBus()
 
478
        mandos_dbus_objc = self.bus.get_object(
 
479
            self.busname, "/", follow_name_owner_changes=True)
 
480
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
481
                                          dbus_interface
 
482
                                          = server_interface)
 
483
        try:
 
484
            mandos_clients = (self.mandos_serv
 
485
                              .GetAllClientsWithProperties())
 
486
        except dbus.exceptions.DBusException:
 
487
            mandos_clients = dbus.Dictionary()
 
488
        
 
489
        (self.mandos_serv
 
490
         .connect_to_signal("ClientRemoved",
 
491
                            self.find_and_remove_client,
 
492
                            dbus_interface=server_interface,
 
493
                            byte_arrays=True))
 
494
        (self.mandos_serv
 
495
         .connect_to_signal("ClientAdded",
 
496
                            self.add_new_client,
 
497
                            dbus_interface=server_interface,
 
498
                            byte_arrays=True))
 
499
        (self.mandos_serv
 
500
         .connect_to_signal("ClientNotFound",
 
501
                            self.client_not_found,
 
502
                            dbus_interface=server_interface,
 
503
                            byte_arrays=True))
 
504
        for path, client in mandos_clients.iteritems():
 
505
            client_proxy_object = self.bus.get_object(self.busname,
 
506
                                                      path)
 
507
            self.add_client(MandosClientWidget(server_proxy_object
 
508
                                               =self.mandos_serv,
 
509
                                               proxy_object
 
510
                                               =client_proxy_object,
 
511
                                               properties=client,
 
512
                                               update_hook
 
513
                                               =self.refresh,
 
514
                                               delete_hook
 
515
                                               =self.remove_client,
 
516
                                               logger
 
517
                                               =self.log_message),
 
518
                            path=path)
 
519
    
 
520
    def client_not_found(self, fingerprint, address):
 
521
        self.log_message(("Client with address %s and fingerprint %s"
 
522
                          " could not be found" % (address,
 
523
                                                    fingerprint)))
 
524
    
474
525
    def rebuild(self):
475
526
        """This rebuilds the User Interface.
476
527
        Call this when the widget layout needs to change"""
477
528
        self.uilist = []
478
 
        # self.uilist.append(urwid.ListBox(self.clients))
 
529
        #self.uilist.append(urwid.ListBox(self.clients))
479
530
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
480
531
                                                          clients),
481
 
                                       # header=urwid.Divider(),
 
532
                                       #header=urwid.Divider(),
482
533
                                       header=None,
483
 
                                       footer=urwid.Divider(
484
 
                                           div_char=self.divider)))
 
534
                                       footer=
 
535
                                       urwid.Divider(div_char=
 
536
                                                     self.divider)))
485
537
        if self.log_visible:
486
538
            self.uilist.append(self.logbox)
 
539
            pass
487
540
        self.topwidget = urwid.Pile(self.uilist)
488
 
 
489
 
    def log_message(self, message, level=1):
490
 
        """Log message formatted with timestamp"""
491
 
        if level < self.log_level:
492
 
            return
 
541
    
 
542
    def log_message(self, message):
493
543
        timestamp = datetime.datetime.now().isoformat()
494
 
        self.log_message_raw("{}: {}".format(timestamp, message),
495
 
                             level=level)
496
 
 
497
 
    def log_message_raw(self, markup, level=1):
 
544
        self.log_message_raw(timestamp + ": " + message)
 
545
    
 
546
    def log_message_raw(self, markup):
498
547
        """Add a log message to the log buffer."""
499
 
        if level < self.log_level:
500
 
            return
501
548
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
502
 
        if self.max_log_length:
503
 
            if len(self.log) > self.max_log_length:
504
 
                del self.log[0:len(self.log)-self.max_log_length-1]
505
 
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
 
549
        if (self.max_log_length
 
550
            and len(self.log) > self.max_log_length):
 
551
            del self.log[0:len(self.log)-self.max_log_length-1]
 
552
        self.logbox.set_focus(len(self.logbox.body.contents),
506
553
                              coming_from="above")
507
554
        self.refresh()
508
 
 
 
555
    
509
556
    def toggle_log_display(self):
510
557
        """Toggle visibility of the log buffer."""
511
558
        self.log_visible = not self.log_visible
512
559
        self.rebuild()
513
 
        self.log_message("Log visibility changed to: {}"
514
 
                         .format(self.log_visible), level=0)
515
 
 
 
560
        #self.log_message("Log visibility changed to: "
 
561
        #                 + unicode(self.log_visible))
 
562
    
516
563
    def change_log_display(self):
517
564
        """Change type of log display.
518
565
        Currently, this toggles wrapping of text lines."""
522
569
            self.log_wrap = "clip"
523
570
        for textwidget in self.log:
524
571
            textwidget.set_wrap_mode(self.log_wrap)
525
 
        self.log_message("Wrap mode: {}".format(self.log_wrap),
526
 
                         level=0)
527
 
 
528
 
    def find_and_remove_client(self, path, interfaces):
529
 
        """Find a client by its object path and remove it.
530
 
 
531
 
        This is connected to the InterfacesRemoved signal from the
 
572
        #self.log_message("Wrap mode: " + self.log_wrap)
 
573
    
 
574
    def find_and_remove_client(self, path, name):
 
575
        """Find an client from its object path and remove it.
 
576
        
 
577
        This is connected to the ClientRemoved signal from the
532
578
        Mandos server object."""
533
 
        if client_interface not in interfaces:
534
 
            # Not a Mandos client object; ignore
535
 
            return
536
579
        try:
537
580
            client = self.clients_dict[path]
538
581
        except KeyError:
539
582
            # not found?
540
 
            self.log_message("Unknown client {!r} removed"
541
 
                             .format(path))
542
 
            return
543
 
        client.delete()
544
 
 
545
 
    def add_new_client(self, path, ifs_and_props):
546
 
        """Find a client by its object path and remove it.
547
 
 
548
 
        This is connected to the InterfacesAdded signal from the
549
 
        Mandos server object.
550
 
        """
551
 
        if client_interface not in ifs_and_props:
552
 
            # Not a Mandos client object; ignore
553
 
            return
 
583
            return
 
584
        self.remove_client(client, path)
 
585
    
 
586
    def add_new_client(self, path):
554
587
        client_proxy_object = self.bus.get_object(self.busname, path)
555
 
        self.add_client(MandosClientWidget(
556
 
            server_proxy_object=self.mandos_serv,
557
 
            proxy_object=client_proxy_object,
558
 
            update_hook=self.refresh,
559
 
            delete_hook=self.remove_client,
560
 
            logger=self.log_message,
561
 
            properties=dict(ifs_and_props[client_interface])),
 
588
        self.add_client(MandosClientWidget(server_proxy_object
 
589
                                           =self.mandos_serv,
 
590
                                           proxy_object
 
591
                                           =client_proxy_object,
 
592
                                           update_hook
 
593
                                           =self.refresh,
 
594
                                           delete_hook
 
595
                                           =self.remove_client,
 
596
                                           logger
 
597
                                           =self.log_message),
562
598
                        path=path)
563
 
 
 
599
    
564
600
    def add_client(self, client, path=None):
565
601
        self.clients.append(client)
566
602
        if path is None:
567
603
            path = client.proxy.object_path
568
604
        self.clients_dict[path] = client
569
 
        self.clients.sort(key=lambda c: c.properties["Name"])
 
605
        self.clients.sort(None, lambda c: c.properties["Name"])
570
606
        self.refresh()
571
 
 
 
607
    
572
608
    def remove_client(self, client, path=None):
573
609
        self.clients.remove(client)
574
610
        if path is None:
575
611
            path = client.proxy.object_path
576
612
        del self.clients_dict[path]
 
613
        if not self.clients_dict:
 
614
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
615
            # is completely emptied, we need to recreate it.
 
616
            self.clients = urwid.SimpleListWalker([])
 
617
            self.rebuild()
577
618
        self.refresh()
578
 
 
 
619
    
579
620
    def refresh(self):
580
621
        """Redraw the screen"""
581
622
        canvas = self.topwidget.render(self.size, focus=True)
582
623
        self.screen.draw_screen(self.size, canvas)
583
 
 
 
624
    
584
625
    def run(self):
585
626
        """Start the main loop and exit when it's done."""
586
 
        self.bus = dbus.SystemBus()
587
 
        mandos_dbus_objc = self.bus.get_object(
588
 
            self.busname, "/", follow_name_owner_changes=True)
589
 
        self.mandos_serv = dbus.Interface(
590
 
            mandos_dbus_objc, dbus_interface=server_interface)
591
 
        try:
592
 
            mandos_clients = (self.mandos_serv
593
 
                              .GetAllClientsWithProperties())
594
 
            if not mandos_clients:
595
 
                self.log_message_raw(("bold",
596
 
                                      "Note: Server has no clients."))
597
 
        except dbus.exceptions.DBusException:
598
 
            self.log_message_raw(("bold",
599
 
                                  "Note: No Mandos server running."))
600
 
            mandos_clients = dbus.Dictionary()
601
 
 
602
 
        (self.mandos_serv
603
 
         .connect_to_signal("InterfacesRemoved",
604
 
                            self.find_and_remove_client,
605
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
606
 
                            byte_arrays=True))
607
 
        (self.mandos_serv
608
 
         .connect_to_signal("InterfacesAdded",
609
 
                            self.add_new_client,
610
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
611
 
                            byte_arrays=True))
612
 
        (self.mandos_serv
613
 
         .connect_to_signal("ClientNotFound",
614
 
                            self.client_not_found,
615
 
                            dbus_interface=server_interface,
616
 
                            byte_arrays=True))
617
 
        for path, client in mandos_clients.items():
618
 
            client_proxy_object = self.bus.get_object(self.busname,
619
 
                                                      path)
620
 
            self.add_client(MandosClientWidget(
621
 
                server_proxy_object=self.mandos_serv,
622
 
                proxy_object=client_proxy_object,
623
 
                properties=client,
624
 
                update_hook=self.refresh,
625
 
                delete_hook=self.remove_client,
626
 
                logger=self.log_message),
627
 
                            path=path)
628
 
 
629
627
        self.refresh()
630
 
        self._input_callback_tag = (
631
 
            GLib.io_add_watch(
632
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
633
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
634
 
                self.process_input))
 
628
        self._input_callback_tag = (gobject.io_add_watch
 
629
                                    (sys.stdin.fileno(),
 
630
                                     gobject.IO_IN,
 
631
                                     self.process_input))
635
632
        self.main_loop.run()
636
633
        # Main loop has finished, we should close everything now
637
 
        GLib.source_remove(self._input_callback_tag)
638
 
        with warnings.catch_warnings():
639
 
            warnings.simplefilter("ignore", BytesWarning)
640
 
            self.screen.stop()
641
 
 
 
634
        gobject.source_remove(self._input_callback_tag)
 
635
        self.screen.stop()
 
636
    
642
637
    def stop(self):
643
638
        self.main_loop.quit()
644
 
 
 
639
    
645
640
    def process_input(self, source, condition):
646
641
        keys = self.screen.get_input()
647
 
        translations = {"ctrl n": "down",       # Emacs
648
 
                        "ctrl p": "up",         # Emacs
649
 
                        "ctrl v": "page down",  # Emacs
650
 
                        "meta v": "page up",    # Emacs
651
 
                        " ": "page down",       # less
652
 
                        "f": "page down",       # less
653
 
                        "b": "page up",         # less
654
 
                        "j": "down",            # vi
655
 
                        "k": "up",              # vi
656
 
                        }
 
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
                         }
657
652
        for key in keys:
658
653
            try:
659
654
                key = translations[key]
660
655
            except KeyError:    # :-)
661
656
                pass
662
 
 
 
657
            
663
658
            if key == "q" or key == "Q":
664
659
                self.stop()
665
660
                break
666
661
            elif key == "window resize":
667
662
                self.size = self.screen.get_cols_rows()
668
663
                self.refresh()
669
 
            elif key == "ctrl l":
670
 
                self.screen.clear()
 
664
            elif key == "\f":  # Ctrl-L
671
665
                self.refresh()
672
666
            elif key == "l" or key == "D":
673
667
                self.toggle_log_display()
685
679
                                            "?: Help",
686
680
                                            "l: Log window toggle",
687
681
                                            "TAB: Switch window",
688
 
                                            "w: Wrap (log lines)",
689
 
                                            "v: Toggle verbose log",
690
 
                                            ))))
 
682
                                            "w: Wrap (log)"))))
691
683
                self.log_message_raw(("bold",
692
684
                                      "  "
693
685
                                      .join(("Clients:",
706
698
                else:
707
699
                    self.topwidget.set_focus(self.logbox)
708
700
                self.refresh()
709
 
            elif key == "v":
710
 
                if self.log_level == 0:
711
 
                    self.log_level = 1
712
 
                    self.log_message("Verbose mode: Off")
713
 
                else:
714
 
                    self.log_level = 0
715
 
                    self.log_message("Verbose mode: On")
716
 
            # elif (key == "end" or key == "meta >" or key == "G"
717
 
            #       or key == ">"):
718
 
            #     pass            # xxx end-of-buffer
719
 
            # elif (key == "home" or key == "meta <" or key == "g"
720
 
            #       or key == "<"):
721
 
            #     pass            # xxx beginning-of-buffer
722
 
            # elif key == "ctrl e" or key == "$":
723
 
            #     pass            # xxx move-end-of-line
724
 
            # elif key == "ctrl a" or key == "^":
725
 
            #     pass            # xxx move-beginning-of-line
726
 
            # elif key == "ctrl b" or key == "meta (" or key == "h":
727
 
            #     pass            # xxx left
728
 
            # elif key == "ctrl f" or key == "meta )" or key == "l":
729
 
            #     pass            # xxx right
730
 
            # elif key == "a":
731
 
            #     pass            # scroll up log
732
 
            # elif key == "z":
733
 
            #     pass            # scroll down log
 
701
            #elif (key == "end" or key == "meta >" or key == "G"
 
702
            #      or key == ">"):
 
703
            #    pass            # xxx end-of-buffer
 
704
            #elif (key == "home" or key == "meta <" or key == "g"
 
705
            #      or key == "<"):
 
706
            #    pass            # xxx beginning-of-buffer
 
707
            #elif key == "ctrl e" or key == "$":
 
708
            #    pass            # xxx move-end-of-line
 
709
            #elif key == "ctrl a" or key == "^":
 
710
            #    pass            # xxx move-beginning-of-line
 
711
            #elif key == "ctrl b" or key == "meta (" or key == "h":
 
712
            #    pass            # xxx left
 
713
            #elif key == "ctrl f" or key == "meta )" or key == "l":
 
714
            #    pass            # xxx right
 
715
            #elif key == "a":
 
716
            #    pass            # scroll up log
 
717
            #elif key == "z":
 
718
            #    pass            # scroll down log
734
719
            elif self.topwidget.selectable():
735
720
                self.topwidget.keypress(self.size, key)
736
721
                self.refresh()
737
722
        return True
738
723
 
739
 
 
740
724
ui = UserInterface()
741
725
try:
742
726
    ui.run()
743
727
except KeyboardInterrupt:
744
728
    ui.screen.stop()
745
 
except Exception as e:
746
 
    ui.log_message(str(e))
 
729
except Exception, e:
 
730
    ui.log_message(unicode(e))
747
731
    ui.screen.stop()
748
732
    raise