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  • Committer: Teddy Hogeborn
  • Date: 2017-08-20 14:14:14 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 360.
  • Revision ID: teddy@recompile.se-20170820141414-m034xuebg7ccaeui
Add some more restrictions to the systemd service file.

* mandos.service ([Service]/ProtectKernelTunables): New; set to "yes".
  ([Service]/ProtectControlGroups): - '' -

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1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
 
3
#
 
4
# Mandos Monitor - Control and monitor the Mandos server
 
5
#
 
6
# Copyright © 2009-2017 Teddy Hogeborn
 
7
# Copyright © 2009-2017 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
 
11
# the Free Software Foundation, either version 3 of the License, or
 
12
# (at your option) any later version.
 
13
#
 
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
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
17
#     GNU General Public License for more details.
 
18
#
 
19
# 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
#
 
23
# Contact the authors at <mandos@recompile.se>.
 
24
#
3
25
 
4
 
from __future__ import division, absolute_import, with_statement
 
26
from __future__ import (division, absolute_import, print_function,
 
27
                        unicode_literals)
 
28
try:
 
29
    from future_builtins import *
 
30
except ImportError:
 
31
    pass
5
32
 
6
33
import sys
7
34
import os
8
 
import signal
9
35
 
10
36
import datetime
11
37
 
13
39
import urwid
14
40
 
15
41
from dbus.mainloop.glib import DBusGMainLoop
16
 
import gobject
 
42
from gi.repository import GLib
17
43
 
18
44
import dbus
19
45
 
20
 
import UserList
21
 
 
22
46
import locale
23
47
 
24
 
locale.setlocale(locale.LC_ALL, u'')
25
 
 
26
48
import logging
 
49
 
 
50
if sys.version_info.major == 2:
 
51
    str = unicode
 
52
 
 
53
locale.setlocale(locale.LC_ALL, '')
 
54
 
27
55
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
28
56
 
29
57
# Some useful constants
30
 
domain = 'se.bsnet.fukt'
 
58
domain = 'se.recompile'
31
59
server_interface = domain + '.Mandos'
32
60
client_interface = domain + '.Mandos.Client'
33
 
version = "1.0.15"
34
 
 
35
 
# Always run in monochrome mode
36
 
urwid.curses_display.curses.has_colors = lambda : False
37
 
 
38
 
# Urwid doesn't support blinking, but we want it.  Since we have no
39
 
# use for underline on its own, we make underline also always blink.
40
 
urwid.curses_display.curses.A_UNDERLINE |= (
41
 
    urwid.curses_display.curses.A_BLINK)
 
61
version = "1.7.15"
 
62
 
 
63
try:
 
64
    dbus.OBJECT_MANAGER_IFACE
 
65
except AttributeError:
 
66
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
67
 
42
68
 
43
69
def isoformat_to_datetime(iso):
44
70
    "Parse an ISO 8601 date string to a datetime.datetime()"
45
71
    if not iso:
46
72
        return None
47
 
    d, t = iso.split(u"T", 1)
48
 
    year, month, day = d.split(u"-", 2)
49
 
    hour, minute, second = t.split(u":", 2)
 
73
    d, t = iso.split("T", 1)
 
74
    year, month, day = d.split("-", 2)
 
75
    hour, minute, second = t.split(":", 2)
50
76
    second, fraction = divmod(float(second), 1)
51
77
    return datetime.datetime(int(year),
52
78
                             int(month),
53
79
                             int(day),
54
80
                             int(hour),
55
81
                             int(minute),
56
 
                             int(second),           # Whole seconds
57
 
                             int(fraction*1000000)) # Microseconds
 
82
                             int(second),            # Whole seconds
 
83
                             int(fraction*1000000))  # Microseconds
 
84
 
58
85
 
59
86
class MandosClientPropertyCache(object):
60
87
    """This wraps a Mandos Client D-Bus proxy object, caches the
61
88
    properties and calls a hook function when any of them are
62
89
    changed.
63
90
    """
64
 
    def __init__(self, proxy_object=None, *args, **kwargs):
65
 
        self.proxy = proxy_object # Mandos Client proxy object
66
 
        
67
 
        self.properties = dict()
68
 
        self.proxy.connect_to_signal(u"PropertyChanged",
69
 
                                     self.property_changed,
70
 
                                     client_interface,
71
 
                                     byte_arrays=True)
72
 
        
73
 
        self.properties.update(
74
 
            self.proxy.GetAll(client_interface,
75
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
76
 
 
77
 
        #XXX This break good super behaviour!
78
 
#        super(MandosClientPropertyCache, self).__init__(
79
 
#            *args, **kwargs)
80
 
    
81
 
    def property_changed(self, property=None, value=None):
82
 
        """This is called whenever we get a PropertyChanged signal
83
 
        It updates the changed property in the "properties" dict.
 
91
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
92
        self.proxy = proxy_object  # Mandos Client proxy object
 
93
        self.properties = dict() if properties is None else properties
 
94
        self.property_changed_match = (
 
95
            self.proxy.connect_to_signal("PropertiesChanged",
 
96
                                         self.properties_changed,
 
97
                                         dbus.PROPERTIES_IFACE,
 
98
                                         byte_arrays=True))
 
99
 
 
100
        if properties is None:
 
101
            self.properties.update(self.proxy.GetAll(
 
102
                client_interface,
 
103
                dbus_interface=dbus.PROPERTIES_IFACE))
 
104
 
 
105
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
106
 
 
107
    def properties_changed(self, interface, properties, invalidated):
 
108
        """This is called whenever we get a PropertiesChanged signal
 
109
        It updates the changed properties in the "properties" dict.
84
110
        """
85
111
        # Update properties dict with new value
86
 
        self.properties[property] = value
 
112
        if interface == client_interface:
 
113
            self.properties.update(properties)
 
114
 
 
115
    def delete(self):
 
116
        self.property_changed_match.remove()
87
117
 
88
118
 
89
119
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
90
120
    """A Mandos Client which is visible on the screen.
91
121
    """
92
 
    
 
122
 
93
123
    def __init__(self, server_proxy_object=None, update_hook=None,
94
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
124
                 delete_hook=None, logger=None, **kwargs):
95
125
        # Called on update
96
126
        self.update_hook = update_hook
97
127
        # Called on delete
100
130
        self.server_proxy_object = server_proxy_object
101
131
        # Logger
102
132
        self.logger = logger
103
 
        
 
133
 
104
134
        self._update_timer_callback_tag = None
105
 
        self.last_checker_failed = False
106
 
        
 
135
 
107
136
        # The widget shown normally
108
 
        self._text_widget = urwid.Text(u"")
 
137
        self._text_widget = urwid.Text("")
109
138
        # The widget shown when we have focus
110
 
        self._focus_text_widget = urwid.Text(u"")
111
 
        super(MandosClientWidget, self).__init__(
112
 
            update_hook=update_hook, delete_hook=delete_hook,
113
 
            *args, **kwargs)
 
139
        self._focus_text_widget = urwid.Text("")
 
140
        super(MandosClientWidget, self).__init__(**kwargs)
114
141
        self.update()
115
142
        self.opened = False
116
 
        self.proxy.connect_to_signal(u"CheckerCompleted",
117
 
                                     self.checker_completed,
118
 
                                     client_interface,
119
 
                                     byte_arrays=True)
120
 
        self.proxy.connect_to_signal(u"CheckerStarted",
121
 
                                     self.checker_started,
122
 
                                     client_interface,
123
 
                                     byte_arrays=True)
124
 
        self.proxy.connect_to_signal(u"GotSecret",
125
 
                                     self.got_secret,
126
 
                                     client_interface,
127
 
                                     byte_arrays=True)
128
 
        self.proxy.connect_to_signal(u"NeedApproval",
129
 
                                     self.need_approval,
130
 
                                     client_interface,
131
 
                                     byte_arrays=True)
132
 
        self.proxy.connect_to_signal(u"Rejected",
133
 
                                     self.rejected,
134
 
                                     client_interface,
135
 
                                     byte_arrays=True)
136
 
        last_checked_ok = isoformat_to_datetime(self.properties
137
 
                                                ["last_checked_ok"])
138
 
        if last_checked_ok is None:
139
 
            self.last_checker_failed = True
140
 
        else:
141
 
            self.last_checker_failed = ((datetime.datetime.utcnow()
142
 
                                         - last_checked_ok)
143
 
                                        > datetime.timedelta
144
 
                                        (milliseconds=
145
 
                                         self.properties["interval"]))
146
 
        if self.last_checker_failed:
147
 
            self._update_timer_callback_tag = (gobject.timeout_add
 
143
 
 
144
        self.match_objects = (
 
145
            self.proxy.connect_to_signal("CheckerCompleted",
 
146
                                         self.checker_completed,
 
147
                                         client_interface,
 
148
                                         byte_arrays=True),
 
149
            self.proxy.connect_to_signal("CheckerStarted",
 
150
                                         self.checker_started,
 
151
                                         client_interface,
 
152
                                         byte_arrays=True),
 
153
            self.proxy.connect_to_signal("GotSecret",
 
154
                                         self.got_secret,
 
155
                                         client_interface,
 
156
                                         byte_arrays=True),
 
157
            self.proxy.connect_to_signal("NeedApproval",
 
158
                                         self.need_approval,
 
159
                                         client_interface,
 
160
                                         byte_arrays=True),
 
161
            self.proxy.connect_to_signal("Rejected",
 
162
                                         self.rejected,
 
163
                                         client_interface,
 
164
                                         byte_arrays=True))
 
165
        self.logger('Created client {}'
 
166
                    .format(self.properties["Name"]), level=0)
 
167
 
 
168
    def using_timer(self, flag):
 
169
        """Call this method with True or False when timer should be
 
170
        activated or deactivated.
 
171
        """
 
172
        if flag and self._update_timer_callback_tag is None:
 
173
            # Will update the shown timer value every second
 
174
            self._update_timer_callback_tag = (GLib.timeout_add
148
175
                                               (1000,
149
176
                                                self.update_timer))
150
 
    
 
177
        elif not (flag or self._update_timer_callback_tag is None):
 
178
            GLib.source_remove(self._update_timer_callback_tag)
 
179
            self._update_timer_callback_tag = None
 
180
 
151
181
    def checker_completed(self, exitstatus, condition, command):
152
182
        if exitstatus == 0:
153
 
            if self.last_checker_failed:
154
 
                self.last_checker_failed = False
155
 
                gobject.source_remove(self._update_timer_callback_tag)
156
 
                self._update_timer_callback_tag = None
157
 
            self.logger(u'Checker for client %s (command "%s")'
158
 
                        u' was successful'
159
 
                        % (self.properties[u"name"], command))
 
183
            self.logger('Checker for client {} (command "{}")'
 
184
                        ' succeeded'.format(self.properties["Name"],
 
185
                                            command), level=0)
160
186
            self.update()
161
187
            return
162
188
        # Checker failed
163
 
        if not self.last_checker_failed:
164
 
            self.last_checker_failed = True
165
 
            self._update_timer_callback_tag = (gobject.timeout_add
166
 
                                               (1000,
167
 
                                                self.update_timer))
168
189
        if os.WIFEXITED(condition):
169
 
            self.logger(u'Checker for client %s (command "%s")'
170
 
                        u' failed with exit code %s'
171
 
                        % (self.properties[u"name"], command,
172
 
                           os.WEXITSTATUS(condition)))
 
190
            self.logger('Checker for client {} (command "{}") failed'
 
191
                        ' with exit code {}'
 
192
                        .format(self.properties["Name"], command,
 
193
                                os.WEXITSTATUS(condition)))
173
194
        elif os.WIFSIGNALED(condition):
174
 
            self.logger(u'Checker for client %s (command "%s")'
175
 
                        u' was killed by signal %s'
176
 
                        % (self.properties[u"name"], command,
177
 
                           os.WTERMSIG(condition)))
178
 
        elif os.WCOREDUMP(condition):
179
 
            self.logger(u'Checker for client %s (command "%s")'
180
 
                        u' dumped core'
181
 
                        % (self.properties[u"name"], command))
182
 
        else:
183
 
            self.logger(u'Checker for client %s completed mysteriously')
 
195
            self.logger('Checker for client {} (command "{}") was'
 
196
                        ' killed by signal {}'
 
197
                        .format(self.properties["Name"], command,
 
198
                                os.WTERMSIG(condition)))
184
199
        self.update()
185
 
    
 
200
 
186
201
    def checker_started(self, command):
187
 
        #self.logger(u'Client %s started checker "%s"'
188
 
        #            % (self.properties[u"name"], unicode(command)))
189
 
        pass
190
 
    
 
202
        """Server signals that a checker started."""
 
203
        self.logger('Client {} started checker "{}"'
 
204
                    .format(self.properties["Name"],
 
205
                            command), level=0)
 
206
 
191
207
    def got_secret(self):
192
 
        self.logger(u'Client %s received its secret'
193
 
                    % self.properties[u"name"])
194
 
    
 
208
        self.logger('Client {} received its secret'
 
209
                    .format(self.properties["Name"]))
 
210
 
195
211
    def need_approval(self, timeout, default):
196
212
        if not default:
197
 
            message = u'Client %s needs approval within %s seconds'
 
213
            message = 'Client {} needs approval within {} seconds'
198
214
        else:
199
 
            message = u'Client %s will get its secret in %s seconds'
200
 
        self.logger(message
201
 
                    % (self.properties[u"name"], timeout/1000))
202
 
    
 
215
            message = 'Client {} will get its secret in {} seconds'
 
216
        self.logger(message.format(self.properties["Name"],
 
217
                                   timeout/1000))
 
218
 
203
219
    def rejected(self, reason):
204
 
        self.logger(u'Client %s was rejected; reason: %s'
205
 
                    % (self.properties[u"name"], reason))
206
 
    
 
220
        self.logger('Client {} was rejected; reason: {}'
 
221
                    .format(self.properties["Name"], reason))
 
222
 
207
223
    def selectable(self):
208
224
        """Make this a "selectable" widget.
209
225
        This overrides the method from urwid.FlowWidget."""
210
226
        return True
211
 
    
212
 
    def rows(self, (maxcol,), focus=False):
 
227
 
 
228
    def rows(self, maxcolrow, focus=False):
213
229
        """How many rows this widget will occupy might depend on
214
230
        whether we have focus or not.
215
231
        This overrides the method from urwid.FlowWidget"""
216
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
217
 
    
 
232
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
233
 
218
234
    def current_widget(self, focus=False):
219
235
        if focus or self.opened:
220
236
            return self._focus_widget
221
237
        return self._widget
222
 
    
 
238
 
223
239
    def update(self):
224
240
        "Called when what is visible on the screen should be updated."
225
241
        # How to add standout mode to a style
226
 
        with_standout = { u"normal": u"standout",
227
 
                          u"bold": u"bold-standout",
228
 
                          u"underline-blink":
229
 
                              u"underline-blink-standout",
230
 
                          u"bold-underline-blink":
231
 
                              u"bold-underline-blink-standout",
232
 
                          }
 
242
        with_standout = {"normal": "standout",
 
243
                         "bold": "bold-standout",
 
244
                         "underline-blink":
 
245
                         "underline-blink-standout",
 
246
                         "bold-underline-blink":
 
247
                         "bold-underline-blink-standout",
 
248
                         }
233
249
 
234
250
        # Rebuild focus and non-focus widgets using current properties
235
251
 
236
252
        # Base part of a client. Name!
237
 
        base = (u'%(name)s: '
238
 
                      % {u"name": self.properties[u"name"]})
239
 
        if not self.properties[u"enabled"]:
240
 
            message = u"DISABLED"
241
 
        elif self.last_checker_failed:
242
 
            timeout = datetime.timedelta(milliseconds
243
 
                                         = self.properties[u"timeout"])
244
 
            last_ok = isoformat_to_datetime(
245
 
                max((self.properties["last_checked_ok"]
246
 
                     or self.properties["created"]),
247
 
                    self.properties[u"last_enabled"]))
248
 
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
249
 
            message = (u'A checker has failed! Time until client gets diabled: %s'
250
 
                           % unicode(timer).rsplit(".", 1)[0])
251
 
        elif self.properties[u"approved_pending"]:
252
 
            if self.properties[u"approved_by_default"]:
253
 
                message = u"Connection established to client. (d)eny?"
254
 
            else:
255
 
                message = u"Seeks approval to send secret. (a)pprove?"
 
253
        base = '{name}: '.format(name=self.properties["Name"])
 
254
        if not self.properties["Enabled"]:
 
255
            message = "DISABLED"
 
256
            self.using_timer(False)
 
257
        elif self.properties["ApprovalPending"]:
 
258
            timeout = datetime.timedelta(
 
259
                milliseconds=self.properties["ApprovalDelay"])
 
260
            last_approval_request = isoformat_to_datetime(
 
261
                self.properties["LastApprovalRequest"])
 
262
            if last_approval_request is not None:
 
263
                timer = max(timeout - (datetime.datetime.utcnow()
 
264
                                       - last_approval_request),
 
265
                            datetime.timedelta())
 
266
            else:
 
267
                timer = datetime.timedelta()
 
268
            if self.properties["ApprovedByDefault"]:
 
269
                message = "Approval in {}. (d)eny?"
 
270
            else:
 
271
                message = "Denial in {}. (a)pprove?"
 
272
            message = message.format(str(timer).rsplit(".", 1)[0])
 
273
            self.using_timer(True)
 
274
        elif self.properties["LastCheckerStatus"] != 0:
 
275
            # When checker has failed, show timer until client expires
 
276
            expires = self.properties["Expires"]
 
277
            if expires == "":
 
278
                timer = datetime.timedelta(0)
 
279
            else:
 
280
                expires = (datetime.datetime.strptime
 
281
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
282
                timer = max(expires - datetime.datetime.utcnow(),
 
283
                            datetime.timedelta())
 
284
            message = ('A checker has failed! Time until client'
 
285
                       ' gets disabled: {}'
 
286
                       .format(str(timer).rsplit(".", 1)[0]))
 
287
            self.using_timer(True)
256
288
        else:
257
 
            message = u"enabled"
258
 
        self._text = "%s%s" % (base, message)
259
 
            
 
289
            message = "enabled"
 
290
            self.using_timer(False)
 
291
        self._text = "{}{}".format(base, message)
 
292
 
260
293
        if not urwid.supports_unicode():
261
294
            self._text = self._text.encode("ascii", "replace")
262
 
        textlist = [(u"normal", self._text)]
 
295
        textlist = [("normal", self._text)]
263
296
        self._text_widget.set_text(textlist)
264
297
        self._focus_text_widget.set_text([(with_standout[text[0]],
265
298
                                           text[1])
272
305
        # Run update hook, if any
273
306
        if self.update_hook is not None:
274
307
            self.update_hook()
275
 
    
 
308
 
276
309
    def update_timer(self):
277
 
        "called by gobject"
 
310
        """called by GLib. Will indefinitely loop until
 
311
        GLib.source_remove() on tag is called
 
312
        """
278
313
        self.update()
279
314
        return True             # Keep calling this
280
 
    
281
 
    def delete(self):
 
315
 
 
316
    def delete(self, **kwargs):
282
317
        if self._update_timer_callback_tag is not None:
283
 
            gobject.source_remove(self._update_timer_callback_tag)
 
318
            GLib.source_remove(self._update_timer_callback_tag)
284
319
            self._update_timer_callback_tag = None
 
320
        for match in self.match_objects:
 
321
            match.remove()
 
322
        self.match_objects = ()
285
323
        if self.delete_hook is not None:
286
324
            self.delete_hook(self)
287
 
    
288
 
    def render(self, (maxcol,), focus=False):
 
325
        return super(MandosClientWidget, self).delete(**kwargs)
 
326
 
 
327
    def render(self, maxcolrow, focus=False):
289
328
        """Render differently if we have focus.
290
329
        This overrides the method from urwid.FlowWidget"""
291
 
        return self.current_widget(focus).render((maxcol,),
 
330
        return self.current_widget(focus).render(maxcolrow,
292
331
                                                 focus=focus)
293
 
    
294
 
    def keypress(self, (maxcol,), key):
 
332
 
 
333
    def keypress(self, maxcolrow, key):
295
334
        """Handle keys.
296
335
        This overrides the method from urwid.FlowWidget"""
297
 
        if key == u"+":
298
 
            self.proxy.Enable(dbus_interface = client_interface)
299
 
        elif key == u"-":
300
 
            self.proxy.Disable(dbus_interface = client_interface)
301
 
        elif key == u"a":
 
336
        if key == "+":
 
337
            self.proxy.Set(client_interface, "Enabled",
 
338
                           dbus.Boolean(True), ignore_reply=True,
 
339
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
340
        elif key == "-":
 
341
            self.proxy.Set(client_interface, "Enabled", False,
 
342
                           ignore_reply=True,
 
343
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
344
        elif key == "a":
302
345
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
303
 
                               dbus_interface = client_interface)
304
 
        elif key == u"d":
 
346
                               dbus_interface=client_interface,
 
347
                               ignore_reply=True)
 
348
        elif key == "d":
305
349
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
306
 
                                  dbus_interface = client_interface)
307
 
        elif key == u"r" or key == u"_" or key == u"ctrl k":
 
350
                               dbus_interface=client_interface,
 
351
                               ignore_reply=True)
 
352
        elif key == "R" or key == "_" or key == "ctrl k":
308
353
            self.server_proxy_object.RemoveClient(self.proxy
309
 
                                                  .object_path)
310
 
        elif key == u"s":
311
 
            self.proxy.StartChecker(dbus_interface = client_interface)
312
 
        elif key == u"S":
313
 
            self.proxy.StopChecker(dbus_interface = client_interface)
314
 
        elif key == u"C":
315
 
            self.proxy.CheckedOK(dbus_interface = client_interface)
 
354
                                                  .object_path,
 
355
                                                  ignore_reply=True)
 
356
        elif key == "s":
 
357
            self.proxy.Set(client_interface, "CheckerRunning",
 
358
                           dbus.Boolean(True), ignore_reply=True,
 
359
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
360
        elif key == "S":
 
361
            self.proxy.Set(client_interface, "CheckerRunning",
 
362
                           dbus.Boolean(False), ignore_reply=True,
 
363
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
364
        elif key == "C":
 
365
            self.proxy.CheckedOK(dbus_interface=client_interface,
 
366
                                 ignore_reply=True)
316
367
        # xxx
317
 
#         elif key == u"p" or key == "=":
 
368
#         elif key == "p" or key == "=":
318
369
#             self.proxy.pause()
319
 
#         elif key == u"u" or key == ":":
 
370
#         elif key == "u" or key == ":":
320
371
#             self.proxy.unpause()
321
 
#         elif key == u"RET":
 
372
#         elif key == "RET":
322
373
#             self.open()
323
 
#        elif key == u"+":
324
 
#            self.proxy.Approve(True)
325
 
#        elif key == u"-":
326
 
#            self.proxy.Approve(False)
327
374
        else:
328
375
            return key
329
 
    
330
 
    def property_changed(self, property=None, value=None,
331
 
                         *args, **kwargs):
332
 
        """Call self.update() if old value is not new value.
 
376
 
 
377
    def properties_changed(self, interface, properties, invalidated):
 
378
        """Call self.update() if any properties changed.
333
379
        This overrides the method from MandosClientPropertyCache"""
334
 
        property_name = unicode(property)
335
 
        old_value = self.properties.get(property_name)
336
 
        super(MandosClientWidget, self).property_changed(
337
 
            property=property, value=value, *args, **kwargs)
338
 
        if self.properties.get(property_name) != old_value:
 
380
        old_values = {key: self.properties.get(key)
 
381
                      for key in properties.keys()}
 
382
        super(MandosClientWidget, self).properties_changed(
 
383
            interface, properties, invalidated)
 
384
        if any(old_values[key] != self.properties.get(key)
 
385
               for key in old_values):
339
386
            self.update()
340
387
 
341
388
 
344
391
    "down" key presses, thus not allowing any containing widgets to
345
392
    use them as an excuse to shift focus away from this widget.
346
393
    """
347
 
    def keypress(self, (maxcol, maxrow), key):
348
 
        ret = super(ConstrainedListBox, self).keypress((maxcol, maxrow), key)
349
 
        if ret in (u"up", u"down"):
 
394
    def keypress(self, *args, **kwargs):
 
395
        ret = (super(ConstrainedListBox, self)
 
396
               .keypress(*args, **kwargs))
 
397
        if ret in ("up", "down"):
350
398
            return
351
399
        return ret
352
400
 
355
403
    """This is the entire user interface - the whole screen
356
404
    with boxes, lists of client widgets, etc.
357
405
    """
358
 
    def __init__(self, max_log_length=1000):
 
406
    def __init__(self, max_log_length=1000, log_level=1):
359
407
        DBusGMainLoop(set_as_default=True)
360
 
        
 
408
 
361
409
        self.screen = urwid.curses_display.Screen()
362
 
        
 
410
 
363
411
        self.screen.register_palette((
364
 
                (u"normal",
365
 
                 u"default", u"default", None),
366
 
                (u"bold",
367
 
                 u"default", u"default", u"bold"),
368
 
                (u"underline-blink",
369
 
                 u"default", u"default", u"underline"),
370
 
                (u"standout",
371
 
                 u"default", u"default", u"standout"),
372
 
                (u"bold-underline-blink",
373
 
                 u"default", u"default", (u"bold", u"underline")),
374
 
                (u"bold-standout",
375
 
                 u"default", u"default", (u"bold", u"standout")),
376
 
                (u"underline-blink-standout",
377
 
                 u"default", u"default", (u"underline", u"standout")),
378
 
                (u"bold-underline-blink-standout",
379
 
                 u"default", u"default", (u"bold", u"underline",
380
 
                                          u"standout")),
 
412
                ("normal",
 
413
                 "default", "default", None),
 
414
                ("bold",
 
415
                 "bold", "default", "bold"),
 
416
                ("underline-blink",
 
417
                 "underline,blink", "default", "underline,blink"),
 
418
                ("standout",
 
419
                 "standout", "default", "standout"),
 
420
                ("bold-underline-blink",
 
421
                 "bold,underline,blink", "default",
 
422
                 "bold,underline,blink"),
 
423
                ("bold-standout",
 
424
                 "bold,standout", "default", "bold,standout"),
 
425
                ("underline-blink-standout",
 
426
                 "underline,blink,standout", "default",
 
427
                 "underline,blink,standout"),
 
428
                ("bold-underline-blink-standout",
 
429
                 "bold,underline,blink,standout", "default",
 
430
                 "bold,underline,blink,standout"),
381
431
                ))
382
 
        
 
432
 
383
433
        if urwid.supports_unicode():
384
 
            self.divider = u"─" # \u2500
385
 
            #self.divider = u"━" # \u2501
 
434
            self.divider = "─"  # \u2500
386
435
        else:
387
 
            #self.divider = u"-" # \u002d
388
 
            self.divider = u"_" # \u005f
389
 
        
 
436
            self.divider = "_"  # \u005f
 
437
 
390
438
        self.screen.start()
391
 
        
 
439
 
392
440
        self.size = self.screen.get_cols_rows()
393
 
        
 
441
 
394
442
        self.clients = urwid.SimpleListWalker([])
395
443
        self.clients_dict = {}
396
 
        
 
444
 
397
445
        # We will add Text widgets to this list
398
446
        self.log = []
399
447
        self.max_log_length = max_log_length
400
 
        
 
448
 
 
449
        self.log_level = log_level
 
450
 
401
451
        # We keep a reference to the log widget so we can remove it
402
452
        # from the ListWalker without it getting destroyed
403
453
        self.logbox = ConstrainedListBox(self.log)
404
 
        
 
454
 
405
455
        # This keeps track of whether self.uilist currently has
406
456
        # self.logbox in it or not
407
457
        self.log_visible = True
408
 
        self.log_wrap = u"any"
409
 
        
 
458
        self.log_wrap = "any"
 
459
 
410
460
        self.rebuild()
411
 
        self.log_message_raw((u"bold",
412
 
                              u"Mandos Monitor version " + version))
413
 
        self.log_message_raw((u"bold",
414
 
                              u"q: Quit  ?: Help"))
415
 
        
 
461
        self.log_message_raw(("bold",
 
462
                              "Mandos Monitor version " + version))
 
463
        self.log_message_raw(("bold",
 
464
                              "q: Quit  ?: Help"))
 
465
 
416
466
        self.busname = domain + '.Mandos'
417
 
        self.main_loop = gobject.MainLoop()
418
 
        self.bus = dbus.SystemBus()
419
 
        mandos_dbus_objc = self.bus.get_object(
420
 
            self.busname, u"/", follow_name_owner_changes=True)
421
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
422
 
                                          dbus_interface
423
 
                                          = server_interface)
424
 
        try:
425
 
            mandos_clients = (self.mandos_serv
426
 
                              .GetAllClientsWithProperties())
427
 
        except dbus.exceptions.DBusException:
428
 
            mandos_clients = dbus.Dictionary()
429
 
        
430
 
        (self.mandos_serv
431
 
         .connect_to_signal(u"ClientRemoved",
432
 
                            self.find_and_remove_client,
433
 
                            dbus_interface=server_interface,
434
 
                            byte_arrays=True))
435
 
        (self.mandos_serv
436
 
         .connect_to_signal(u"ClientAdded",
437
 
                            self.add_new_client,
438
 
                            dbus_interface=server_interface,
439
 
                            byte_arrays=True))
440
 
        (self.mandos_serv
441
 
         .connect_to_signal(u"ClientNotFound",
442
 
                            self.client_not_found,
443
 
                            dbus_interface=server_interface,
444
 
                            byte_arrays=True))
445
 
        for path, client in mandos_clients.iteritems():
446
 
            client_proxy_object = self.bus.get_object(self.busname,
447
 
                                                      path)
448
 
            self.add_client(MandosClientWidget(server_proxy_object
449
 
                                               =self.mandos_serv,
450
 
                                               proxy_object
451
 
                                               =client_proxy_object,
452
 
                                               properties=client,
453
 
                                               update_hook
454
 
                                               =self.refresh,
455
 
                                               delete_hook
456
 
                                               =self.remove_client,
457
 
                                               logger
458
 
                                               =self.log_message),
459
 
                            path=path)
460
 
    
 
467
        self.main_loop = GLib.MainLoop()
 
468
 
461
469
    def client_not_found(self, fingerprint, address):
462
 
        self.log_message((u"Client with address %s and fingerprint %s"
463
 
                          u" could not be found" % (address,
464
 
                                                    fingerprint)))
465
 
    
 
470
        self.log_message("Client with address {} and fingerprint {}"
 
471
                         " could not be found"
 
472
                         .format(address, fingerprint))
 
473
 
466
474
    def rebuild(self):
467
475
        """This rebuilds the User Interface.
468
476
        Call this when the widget layout needs to change"""
469
477
        self.uilist = []
470
 
        #self.uilist.append(urwid.ListBox(self.clients))
471
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
472
 
                                       #header=urwid.Divider(),
 
478
        # self.uilist.append(urwid.ListBox(self.clients))
 
479
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
480
                                                          clients),
 
481
                                       # header=urwid.Divider(),
473
482
                                       header=None,
474
 
                                       footer=urwid.Divider(div_char=self.divider)))
 
483
                                       footer=urwid.Divider(
 
484
                                           div_char=self.divider)))
475
485
        if self.log_visible:
476
486
            self.uilist.append(self.logbox)
477
 
            pass
478
487
        self.topwidget = urwid.Pile(self.uilist)
479
 
    
480
 
    def log_message(self, message):
 
488
 
 
489
    def log_message(self, message, level=1):
 
490
        """Log message formatted with timestamp"""
 
491
        if level < self.log_level:
 
492
            return
481
493
        timestamp = datetime.datetime.now().isoformat()
482
 
        self.log_message_raw(timestamp + u": " + message)
483
 
    
484
 
    def log_message_raw(self, markup):
 
494
        self.log_message_raw("{}: {}".format(timestamp, message),
 
495
                             level=level)
 
496
 
 
497
    def log_message_raw(self, markup, level=1):
485
498
        """Add a log message to the log buffer."""
 
499
        if level < self.log_level:
 
500
            return
486
501
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
487
 
        if (self.max_log_length
488
 
            and len(self.log) > self.max_log_length):
489
 
            del self.log[0:len(self.log)-self.max_log_length-1]
 
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]
490
505
        self.logbox.set_focus(len(self.logbox.body.contents),
491
 
                              coming_from=u"above")
 
506
                              coming_from="above")
492
507
        self.refresh()
493
 
    
 
508
 
494
509
    def toggle_log_display(self):
495
510
        """Toggle visibility of the log buffer."""
496
511
        self.log_visible = not self.log_visible
497
512
        self.rebuild()
498
 
        self.log_message(u"Log visibility changed to: "
499
 
                         + unicode(self.log_visible))
500
 
    
 
513
        self.log_message("Log visibility changed to: {}"
 
514
                         .format(self.log_visible), level=0)
 
515
 
501
516
    def change_log_display(self):
502
517
        """Change type of log display.
503
518
        Currently, this toggles wrapping of text lines."""
504
 
        if self.log_wrap == u"clip":
505
 
            self.log_wrap = u"any"
 
519
        if self.log_wrap == "clip":
 
520
            self.log_wrap = "any"
506
521
        else:
507
 
            self.log_wrap = u"clip"
 
522
            self.log_wrap = "clip"
508
523
        for textwidget in self.log:
509
524
            textwidget.set_wrap_mode(self.log_wrap)
510
 
        self.log_message(u"Wrap mode: " + self.log_wrap)
511
 
    
512
 
    def find_and_remove_client(self, path, name):
513
 
        """Find an client from its object path and remove it.
514
 
        
515
 
        This is connected to the ClientRemoved signal from the
 
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
516
532
        Mandos server object."""
 
533
        if client_interface not in interfaces:
 
534
            # Not a Mandos client object; ignore
 
535
            return
517
536
        try:
518
537
            client = self.clients_dict[path]
519
538
        except KeyError:
520
539
            # not found?
521
 
            return
522
 
        self.remove_client(client, path)
523
 
    
524
 
    def add_new_client(self, path):
 
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
525
554
        client_proxy_object = self.bus.get_object(self.busname, path)
526
 
        self.add_client(MandosClientWidget(server_proxy_object
527
 
                                           =self.mandos_serv,
528
 
                                           proxy_object
529
 
                                           =client_proxy_object,
530
 
                                           update_hook
531
 
                                           =self.refresh,
532
 
                                           delete_hook
533
 
                                           =self.remove_client,
534
 
                                           logger
535
 
                                           =self.log_message),
 
555
        self.add_client(MandosClientWidget(
 
556
            server_proxy_object=self.mandos_serv,
 
557
            proxy_object=client_proxy_object,
 
558
            update_hook=self.refresh,
 
559
            delete_hook=self.remove_client,
 
560
            logger=self.log_message,
 
561
            properties=dict(ifs_and_props[client_interface])),
536
562
                        path=path)
537
 
    
 
563
 
538
564
    def add_client(self, client, path=None):
539
565
        self.clients.append(client)
540
566
        if path is None:
541
567
            path = client.proxy.object_path
542
568
        self.clients_dict[path] = client
543
 
        self.clients.sort(None, lambda c: c.properties[u"name"])
 
569
        self.clients.sort(key=lambda c: c.properties["Name"])
544
570
        self.refresh()
545
 
    
 
571
 
546
572
    def remove_client(self, client, path=None):
547
573
        self.clients.remove(client)
548
574
        if path is None:
549
575
            path = client.proxy.object_path
550
576
        del self.clients_dict[path]
551
 
        if not self.clients_dict:
552
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
553
 
            # is completely emptied, we need to recreate it.
554
 
            self.clients = urwid.SimpleListWalker([])
555
 
            self.rebuild()
556
577
        self.refresh()
557
 
    
 
578
 
558
579
    def refresh(self):
559
580
        """Redraw the screen"""
560
581
        canvas = self.topwidget.render(self.size, focus=True)
561
582
        self.screen.draw_screen(self.size, canvas)
562
 
    
 
583
 
563
584
    def run(self):
564
585
        """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
 
565
629
        self.refresh()
566
 
        self._input_callback_tag = (gobject.io_add_watch
 
630
        self._input_callback_tag = (GLib.io_add_watch
567
631
                                    (sys.stdin.fileno(),
568
 
                                     gobject.IO_IN,
 
632
                                     GLib.IO_IN,
569
633
                                     self.process_input))
570
634
        self.main_loop.run()
571
635
        # Main loop has finished, we should close everything now
572
 
        gobject.source_remove(self._input_callback_tag)
 
636
        GLib.source_remove(self._input_callback_tag)
573
637
        self.screen.stop()
574
 
    
 
638
 
575
639
    def stop(self):
576
640
        self.main_loop.quit()
577
 
    
 
641
 
578
642
    def process_input(self, source, condition):
579
643
        keys = self.screen.get_input()
580
 
        translations = { u"ctrl n": u"down",      # Emacs
581
 
                         u"ctrl p": u"up",        # Emacs
582
 
                         u"ctrl v": u"page down", # Emacs
583
 
                         u"meta v": u"page up",   # Emacs
584
 
                         u" ": u"page down",      # less
585
 
                         u"f": u"page down",      # less
586
 
                         u"b": u"page up",        # less
587
 
                         u"j": u"down",           # vi
588
 
                         u"k": u"up",             # vi
589
 
                         }
 
644
        translations = {"ctrl n": "down",       # Emacs
 
645
                        "ctrl p": "up",         # Emacs
 
646
                        "ctrl v": "page down",  # Emacs
 
647
                        "meta v": "page up",    # Emacs
 
648
                        " ": "page down",       # less
 
649
                        "f": "page down",       # less
 
650
                        "b": "page up",         # less
 
651
                        "j": "down",            # vi
 
652
                        "k": "up",              # vi
 
653
                        }
590
654
        for key in keys:
591
655
            try:
592
656
                key = translations[key]
593
657
            except KeyError:    # :-)
594
658
                pass
595
 
            
596
 
            if key == u"q" or key == u"Q":
 
659
 
 
660
            if key == "q" or key == "Q":
597
661
                self.stop()
598
662
                break
599
 
            elif key == u"window resize":
 
663
            elif key == "window resize":
600
664
                self.size = self.screen.get_cols_rows()
601
665
                self.refresh()
602
 
            elif key == u"\f":  # Ctrl-L
 
666
            elif key == "ctrl l":
 
667
                self.screen.clear()
603
668
                self.refresh()
604
 
            elif key == u"l" or key == u"D":
 
669
            elif key == "l" or key == "D":
605
670
                self.toggle_log_display()
606
671
                self.refresh()
607
 
            elif key == u"w" or key == u"i":
 
672
            elif key == "w" or key == "i":
608
673
                self.change_log_display()
609
674
                self.refresh()
610
 
            elif key == u"?" or key == u"f1" or key == u"esc":
 
675
            elif key == "?" or key == "f1" or key == "esc":
611
676
                if not self.log_visible:
612
677
                    self.log_visible = True
613
678
                    self.rebuild()
614
 
                self.log_message_raw((u"bold",
615
 
                                      u"  ".
616
 
                                      join((u"q: Quit",
617
 
                                            u"?: Help",
618
 
                                            u"l: Log window toggle",
619
 
                                            u"TAB: Switch window",
620
 
                                            u"w: Wrap (log)"))))
621
 
                self.log_message_raw((u"bold",
622
 
                                      u"  "
623
 
                                      .join((u"Clients:",
624
 
                                             u"+: Enable",
625
 
                                             u"-: Disable",
626
 
                                             u"r: Remove",
627
 
                                             u"s: Start new checker",
628
 
                                             u"S: Stop checker",
629
 
                                             u"C: Checker OK",
630
 
                                             u"a: Approve",
631
 
                                             u"d: Deny"))))
 
679
                self.log_message_raw(("bold",
 
680
                                      "  ".
 
681
                                      join(("q: Quit",
 
682
                                            "?: Help",
 
683
                                            "l: Log window toggle",
 
684
                                            "TAB: Switch window",
 
685
                                            "w: Wrap (log lines)",
 
686
                                            "v: Toggle verbose log",
 
687
                                            ))))
 
688
                self.log_message_raw(("bold",
 
689
                                      "  "
 
690
                                      .join(("Clients:",
 
691
                                             "+: Enable",
 
692
                                             "-: Disable",
 
693
                                             "R: Remove",
 
694
                                             "s: Start new checker",
 
695
                                             "S: Stop checker",
 
696
                                             "C: Checker OK",
 
697
                                             "a: Approve",
 
698
                                             "d: Deny"))))
632
699
                self.refresh()
633
 
            elif key == u"tab":
 
700
            elif key == "tab":
634
701
                if self.topwidget.get_focus() is self.logbox:
635
702
                    self.topwidget.set_focus(0)
636
703
                else:
637
704
                    self.topwidget.set_focus(self.logbox)
638
705
                self.refresh()
639
 
            #elif (key == u"end" or key == u"meta >" or key == u"G"
640
 
            #      or key == u">"):
641
 
            #    pass            # xxx end-of-buffer
642
 
            #elif (key == u"home" or key == u"meta <" or key == u"g"
643
 
            #      or key == u"<"):
644
 
            #    pass            # xxx beginning-of-buffer
645
 
            #elif key == u"ctrl e" or key == u"$":
646
 
            #    pass            # xxx move-end-of-line
647
 
            #elif key == u"ctrl a" or key == u"^":
648
 
            #    pass            # xxx move-beginning-of-line
649
 
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
650
 
            #    pass            # xxx left
651
 
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
652
 
            #    pass            # xxx right
653
 
            #elif key == u"a":
654
 
            #    pass            # scroll up log
655
 
            #elif key == u"z":
656
 
            #    pass            # scroll down log
 
706
            elif key == "v":
 
707
                if self.log_level == 0:
 
708
                    self.log_level = 1
 
709
                    self.log_message("Verbose mode: Off")
 
710
                else:
 
711
                    self.log_level = 0
 
712
                    self.log_message("Verbose mode: On")
 
713
            # elif (key == "end" or key == "meta >" or key == "G"
 
714
            #       or key == ">"):
 
715
            #     pass            # xxx end-of-buffer
 
716
            # elif (key == "home" or key == "meta <" or key == "g"
 
717
            #       or key == "<"):
 
718
            #     pass            # xxx beginning-of-buffer
 
719
            # elif key == "ctrl e" or key == "$":
 
720
            #     pass            # xxx move-end-of-line
 
721
            # elif key == "ctrl a" or key == "^":
 
722
            #     pass            # xxx move-beginning-of-line
 
723
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
724
            #     pass            # xxx left
 
725
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
726
            #     pass            # xxx right
 
727
            # elif key == "a":
 
728
            #     pass            # scroll up log
 
729
            # elif key == "z":
 
730
            #     pass            # scroll down log
657
731
            elif self.topwidget.selectable():
658
732
                self.topwidget.keypress(self.size, key)
659
733
                self.refresh()
660
734
        return True
661
735
 
 
736
 
662
737
ui = UserInterface()
663
738
try:
664
739
    ui.run()
665
 
except Exception, e:
666
 
    ui.log_message(unicode(e))
 
740
except KeyboardInterrupt:
 
741
    ui.screen.stop()
 
742
except Exception as e:
 
743
    ui.log_message(str(e))
667
744
    ui.screen.stop()
668
745
    raise