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  • Committer: Teddy Hogeborn
  • Date: 2009-12-25 23:13:47 UTC
  • Revision ID: teddy@fukt.bsnet.se-20091225231347-gg9u9ru0wj0f24hh
More consistent terminology: Clients are no longer "invalid" - they
are "disabled".  All code and documentation changed to reflect this.

D=Bus API change: The "properties" argument was removed from the
"ClientAdded" signal on interface "se.bsnet.fukt.Mandos".  All code in
both "mandos" and "mandos-monitor" changed to reflect this.

* mandos: Replaced "with closing(F)" with simply "with F" in all
          places where F is a file object.
  (Client.still_valid): Removed.  All callers changed to look at
                        "Client.enabled" instead.
  (dbus_service_property): Check for unsupported signatures with the
                           "byte_arrays" option.
  (DBusObjectWithProperties.Set): - '' -
  (ClientHandler.handle): Use the reverse pipe to receive the
                          "Client.enabled" attribute instead of the
                          now-removed "Client.still_valid()" method.
  (ForkingMixInWithPipe): Renamed to "ForkingMixInWithPipes" (all
                          users changed).  Now also create a reverse
                          pipe for sending data to the child process.
  (ForkingMixInWithPipes.add_pipe): Now takes two pipe fd's as
                                    arguments.  All callers changed.
  (IPv6_TCPServer.handle_ipc): Take an additional "reply_fd" argument
                               (all callers changed).  Close the reply
                               pipe when the child data pipe is
                               closed.  New "GETATTR" IPC method; will
                               pickle client attribute and send it
                               over the reply pipe FD.
  (MandosDBusService.ClientAdded): Removed "properties" argument.  All
                                   emitters changed.
* mandos-clients.conf.xml (DESCRIPTION, OPTIONS): Use
                                                  "enabled/disabled"
                                                  terminology.
* mandos-ctl: Option "--is-valid" renamed to "--is-enabled".
* mandos-monitor: Enable user locale.  Try to log exceptions.
  (MandosClientPropertyCache.__init__): Removed "properties" argument.
                                        All callers changed.
  (UserInterface.add_new_client): Remove "properties" argument.  All
                                  callers changed.  Supply "logger"
                                  argument to MandosClientWidget().
  (UserInterface.add_client): New "logger" argument.  All callers
                              changed.
* mandos.xml (BUGS, SECURITY/CLIENTS): Use "enabled/disabled"
                                       terminology.

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mandos-monitor
1
 
#!/usr/bin/python3 -bbI
 
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
#
4
 
# Mandos Monitor - Control and monitor the Mandos server
5
 
#
6
 
# Copyright © 2009-2019 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
13
 
# the Free Software Foundation, either version 3 of the License, or
14
 
# (at your option) any later version.
15
 
#
16
 
#     Mandos is distributed in the hope that it will be useful, but
17
 
#     WITHOUT ANY WARRANTY; without even the implied warranty of
18
 
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19
 
#     GNU General Public License for more details.
20
 
#
21
 
# 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
 
#
26
3
 
27
 
from __future__ import (division, absolute_import, print_function,
28
 
                        unicode_literals)
29
 
try:
30
 
    from future_builtins import *
31
 
except ImportError:
32
 
    pass
 
4
from __future__ import division, absolute_import, with_statement
33
5
 
34
6
import sys
35
7
import os
36
 
import warnings
 
8
import signal
 
9
 
37
10
import datetime
38
 
import locale
39
 
import logging
40
11
 
41
12
import urwid.curses_display
42
13
import urwid
43
14
 
44
15
from dbus.mainloop.glib import DBusGMainLoop
45
 
from gi.repository import GLib
 
16
import gobject
46
17
 
47
18
import dbus
48
19
 
49
 
if sys.version_info.major == 2:
50
 
    __metaclass__ = type
51
 
    str = unicode
52
 
 
53
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
54
 
logging.basicConfig(level="NOTSET", # Show all messages
55
 
                    format="%(message)s") # Show basic log messages
56
 
 
57
 
logging.captureWarnings(True)   # Show warnings via the logging system
58
 
 
59
 
locale.setlocale(locale.LC_ALL, "")
60
 
 
61
 
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
 
20
import UserList
 
21
 
 
22
import locale
 
23
 
 
24
locale.setlocale(locale.LC_ALL, u'')
62
25
 
63
26
# Some useful constants
64
 
domain = "se.recompile"
65
 
server_interface = domain + ".Mandos"
66
 
client_interface = domain + ".Mandos.Client"
67
 
version = "1.8.11"
68
 
 
69
 
try:
70
 
    dbus.OBJECT_MANAGER_IFACE
71
 
except AttributeError:
72
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
73
 
 
74
 
 
75
 
def isoformat_to_datetime(iso):
76
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
77
 
    if not iso:
78
 
        return None
79
 
    d, t = iso.split("T", 1)
80
 
    year, month, day = d.split("-", 2)
81
 
    hour, minute, second = t.split(":", 2)
82
 
    second, fraction = divmod(float(second), 1)
83
 
    return datetime.datetime(int(year),
84
 
                             int(month),
85
 
                             int(day),
86
 
                             int(hour),
87
 
                             int(minute),
88
 
                             int(second),            # Whole seconds
89
 
                             int(fraction*1000000))  # Microseconds
90
 
 
91
 
 
92
 
class MandosClientPropertyCache:
 
27
domain = 'se.bsnet.fukt'
 
28
server_interface = domain + '.Mandos'
 
29
client_interface = domain + '.Mandos.Client'
 
30
version = "1.0.14"
 
31
 
 
32
# Always run in monochrome mode
 
33
urwid.curses_display.curses.has_colors = lambda : False
 
34
 
 
35
# Urwid doesn't support blinking, but we want it.  Since we have no
 
36
# use for underline on its own, we make underline also always blink.
 
37
urwid.curses_display.curses.A_UNDERLINE |= (
 
38
    urwid.curses_display.curses.A_BLINK)
 
39
 
 
40
class MandosClientPropertyCache(object):
93
41
    """This wraps a Mandos Client D-Bus proxy object, caches the
94
42
    properties and calls a hook function when any of them are
95
43
    changed.
96
44
    """
97
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
98
 
        self.proxy = proxy_object  # Mandos Client proxy object
99
 
        self.properties = dict() if properties is None else properties
100
 
        self.property_changed_match = (
101
 
            self.proxy.connect_to_signal("PropertiesChanged",
102
 
                                         self.properties_changed,
103
 
                                         dbus.PROPERTIES_IFACE,
104
 
                                         byte_arrays=True))
105
 
 
106
 
        if properties is None:
107
 
            self.properties.update(self.proxy.GetAll(
108
 
                client_interface,
109
 
                dbus_interface=dbus.PROPERTIES_IFACE))
110
 
 
111
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
112
 
 
113
 
    def properties_changed(self, interface, properties, invalidated):
114
 
        """This is called whenever we get a PropertiesChanged signal
115
 
        It updates the changed properties in the "properties" dict.
 
45
    def __init__(self, proxy_object=None, *args, **kwargs):
 
46
        self.proxy = proxy_object # Mandos Client proxy object
 
47
        
 
48
        self.properties = dict()
 
49
        self.proxy.connect_to_signal(u"PropertyChanged",
 
50
                                     self.property_changed,
 
51
                                     client_interface,
 
52
                                     byte_arrays=True)
 
53
 
 
54
        self.properties.update(
 
55
            self.proxy.GetAll(client_interface,
 
56
                              dbus_interface = dbus.PROPERTIES_IFACE))
 
57
        super(MandosClientPropertyCache, self).__init__(
 
58
            proxy_object=proxy_object, *args, **kwargs)
 
59
    
 
60
    def property_changed(self, property=None, value=None):
 
61
        """This is called whenever we get a PropertyChanged signal
 
62
        It updates the changed property in the "properties" dict.
116
63
        """
117
64
        # Update properties dict with new value
118
 
        if interface == client_interface:
119
 
            self.properties.update(properties)
120
 
 
121
 
    def delete(self):
122
 
        self.property_changed_match.remove()
 
65
        self.properties[property] = value
123
66
 
124
67
 
125
68
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
126
69
    """A Mandos Client which is visible on the screen.
127
70
    """
128
 
 
 
71
    
129
72
    def __init__(self, server_proxy_object=None, update_hook=None,
130
 
                 delete_hook=None, **kwargs):
 
73
                 delete_hook=None, logger=None, *args, **kwargs):
131
74
        # Called on update
132
75
        self.update_hook = update_hook
133
76
        # Called on delete
134
77
        self.delete_hook = delete_hook
135
78
        # Mandos Server proxy object
136
79
        self.server_proxy_object = server_proxy_object
137
 
 
138
 
        self._update_timer_callback_tag = None
139
 
 
 
80
        # Logger
 
81
        self.logger = logger
 
82
        
140
83
        # The widget shown normally
141
 
        self._text_widget = urwid.Text("")
 
84
        self._text_widget = urwid.Text(u"")
142
85
        # The widget shown when we have focus
143
 
        self._focus_text_widget = urwid.Text("")
144
 
        super(MandosClientWidget, self).__init__(**kwargs)
 
86
        self._focus_text_widget = urwid.Text(u"")
 
87
        super(MandosClientWidget, self).__init__(
 
88
            update_hook=update_hook, delete_hook=delete_hook,
 
89
            *args, **kwargs)
145
90
        self.update()
146
91
        self.opened = False
147
 
 
148
 
        self.match_objects = (
149
 
            self.proxy.connect_to_signal("CheckerCompleted",
150
 
                                         self.checker_completed,
151
 
                                         client_interface,
152
 
                                         byte_arrays=True),
153
 
            self.proxy.connect_to_signal("CheckerStarted",
154
 
                                         self.checker_started,
155
 
                                         client_interface,
156
 
                                         byte_arrays=True),
157
 
            self.proxy.connect_to_signal("GotSecret",
158
 
                                         self.got_secret,
159
 
                                         client_interface,
160
 
                                         byte_arrays=True),
161
 
            self.proxy.connect_to_signal("NeedApproval",
162
 
                                         self.need_approval,
163
 
                                         client_interface,
164
 
                                         byte_arrays=True),
165
 
            self.proxy.connect_to_signal("Rejected",
166
 
                                         self.rejected,
167
 
                                         client_interface,
168
 
                                         byte_arrays=True))
169
 
        log.debug("Created client %s", self.properties["Name"])
170
 
 
171
 
    def using_timer(self, flag):
172
 
        """Call this method with True or False when timer should be
173
 
        activated or deactivated.
174
 
        """
175
 
        if flag and self._update_timer_callback_tag is None:
176
 
            # Will update the shown timer value every second
177
 
            self._update_timer_callback_tag = (
178
 
                GLib.timeout_add(1000,
179
 
                                 glib_safely(self.update_timer)))
180
 
        elif not (flag or self._update_timer_callback_tag is None):
181
 
            GLib.source_remove(self._update_timer_callback_tag)
182
 
            self._update_timer_callback_tag = None
183
 
 
 
92
        self.proxy.connect_to_signal(u"CheckerCompleted",
 
93
                                     self.checker_completed,
 
94
                                     client_interface,
 
95
                                     byte_arrays=True)
 
96
        self.proxy.connect_to_signal(u"CheckerStarted",
 
97
                                     self.checker_started,
 
98
                                     client_interface,
 
99
                                     byte_arrays=True)
 
100
        self.proxy.connect_to_signal(u"GotSecret",
 
101
                                     self.got_secret,
 
102
                                     client_interface,
 
103
                                     byte_arrays=True)
 
104
        self.proxy.connect_to_signal(u"Rejected",
 
105
                                     self.rejected,
 
106
                                     client_interface,
 
107
                                     byte_arrays=True)
 
108
    
184
109
    def checker_completed(self, exitstatus, condition, command):
185
110
        if exitstatus == 0:
186
 
            log.debug('Checker for client %s (command "%s")'
187
 
                      " succeeded", self.properties["Name"], command)
188
 
            self.update()
 
111
            self.logger(u'Checker for client %s (command "%s")'
 
112
                        u' was successful'
 
113
                        % (self.properties[u"name"], command))
189
114
            return
190
 
        # Checker failed
191
115
        if os.WIFEXITED(condition):
192
 
            log.info('Checker for client %s (command "%s") failed'
193
 
                     " with exit code %d", self.properties["Name"],
194
 
                     command, os.WEXITSTATUS(condition))
195
 
        elif os.WIFSIGNALED(condition):
196
 
            log.info('Checker for client %s (command "%s") was'
197
 
                     " killed by signal %d", self.properties["Name"],
198
 
                     command, os.WTERMSIG(condition))
199
 
        self.update()
200
 
 
 
116
            self.logger(u'Checker for client %s (command "%s")'
 
117
                        u' failed with exit code %s'
 
118
                        % (self.properties[u"name"], command,
 
119
                           os.WEXITSTATUS(condition)))
 
120
            return
 
121
        if os.WIFSIGNALED(condition):
 
122
            self.logger(u'Checker for client %s (command "%s")'
 
123
                        u' was killed by signal %s'
 
124
                        % (self.properties[u"name"], command,
 
125
                           os.WTERMSIG(condition)))
 
126
            return
 
127
        if os.WCOREDUMP(condition):
 
128
            self.logger(u'Checker for client %s (command "%s")'
 
129
                        u' dumped core'
 
130
                        % (self.properties[u"name"], command))
 
131
        self.logger(u'Checker for client %s completed mysteriously')
 
132
    
201
133
    def checker_started(self, command):
202
 
        """Server signals that a checker started."""
203
 
        log.debug('Client %s started checker "%s"',
204
 
                  self.properties["Name"], command)
205
 
 
 
134
        self.logger(u'Client %s started checker "%s"'
 
135
                    % (self.properties[u"name"], unicode(command)))
 
136
    
206
137
    def got_secret(self):
207
 
        log.info("Client %s received its secret",
208
 
                 self.properties["Name"])
209
 
 
210
 
    def need_approval(self, timeout, default):
211
 
        if not default:
212
 
            message = "Client %s needs approval within %f seconds"
213
 
        else:
214
 
            message = "Client %s will get its secret in %f seconds"
215
 
        log.info(message, self.properties["Name"], timeout/1000)
216
 
 
217
 
    def rejected(self, reason):
218
 
        log.info("Client %s was rejected; reason: %s",
219
 
                 self.properties["Name"], reason)
220
 
 
 
138
        self.logger(u'Client %s received its secret'
 
139
                    % self.properties[u"name"])
 
140
    
 
141
    def rejected(self):
 
142
        self.logger(u'Client %s was rejected'
 
143
                    % self.properties[u"name"])
 
144
    
221
145
    def selectable(self):
222
146
        """Make this a "selectable" widget.
223
147
        This overrides the method from urwid.FlowWidget."""
224
148
        return True
225
 
 
226
 
    def rows(self, maxcolrow, focus=False):
 
149
    
 
150
    def rows(self, (maxcol,), focus=False):
227
151
        """How many rows this widget will occupy might depend on
228
152
        whether we have focus or not.
229
153
        This overrides the method from urwid.FlowWidget"""
230
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
231
 
 
 
154
        return self.current_widget(focus).rows((maxcol,), focus=focus)
 
155
    
232
156
    def current_widget(self, focus=False):
233
157
        if focus or self.opened:
234
158
            return self._focus_widget
235
159
        return self._widget
236
 
 
 
160
    
237
161
    def update(self):
238
162
        "Called when what is visible on the screen should be updated."
239
163
        # How to add standout mode to a style
240
 
        with_standout = {"normal": "standout",
241
 
                         "bold": "bold-standout",
242
 
                         "underline-blink":
243
 
                         "underline-blink-standout",
244
 
                         "bold-underline-blink":
245
 
                         "bold-underline-blink-standout",
246
 
                         }
247
 
 
 
164
        with_standout = { u"normal": u"standout",
 
165
                          u"bold": u"bold-standout",
 
166
                          u"underline-blink":
 
167
                              u"underline-blink-standout",
 
168
                          u"bold-underline-blink":
 
169
                              u"bold-underline-blink-standout",
 
170
                          }
 
171
        
248
172
        # Rebuild focus and non-focus widgets using current properties
249
 
 
250
 
        # Base part of a client. Name!
251
 
        base = "{name}: ".format(name=self.properties["Name"])
252
 
        if not self.properties["Enabled"]:
253
 
            message = "DISABLED"
254
 
            self.using_timer(False)
255
 
        elif self.properties["ApprovalPending"]:
256
 
            timeout = datetime.timedelta(
257
 
                milliseconds=self.properties["ApprovalDelay"])
258
 
            last_approval_request = isoformat_to_datetime(
259
 
                self.properties["LastApprovalRequest"])
260
 
            if last_approval_request is not None:
261
 
                timer = max(timeout - (datetime.datetime.utcnow()
262
 
                                       - last_approval_request),
263
 
                            datetime.timedelta())
264
 
            else:
265
 
                timer = datetime.timedelta()
266
 
            if self.properties["ApprovedByDefault"]:
267
 
                message = "Approval in {}. (d)eny?"
268
 
            else:
269
 
                message = "Denial in {}. (a)pprove?"
270
 
            message = message.format(str(timer).rsplit(".", 1)[0])
271
 
            self.using_timer(True)
272
 
        elif self.properties["LastCheckerStatus"] != 0:
273
 
            # When checker has failed, show timer until client expires
274
 
            expires = self.properties["Expires"]
275
 
            if expires == "":
276
 
                timer = datetime.timedelta(0)
277
 
            else:
278
 
                expires = (datetime.datetime.strptime
279
 
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
280
 
                timer = max(expires - datetime.datetime.utcnow(),
281
 
                            datetime.timedelta())
282
 
            message = ("A checker has failed! Time until client"
283
 
                       " gets disabled: {}"
284
 
                       .format(str(timer).rsplit(".", 1)[0]))
285
 
            self.using_timer(True)
286
 
        else:
287
 
            message = "enabled"
288
 
            self.using_timer(False)
289
 
        self._text = "{}{}".format(base, message)
290
 
 
 
173
        self._text = (u'%(name)s: %(enabled)s'
 
174
                      % { u"name": self.properties[u"name"],
 
175
                          u"enabled":
 
176
                              (u"enabled"
 
177
                               if self.properties[u"enabled"]
 
178
                               else u"DISABLED")})
291
179
        if not urwid.supports_unicode():
292
180
            self._text = self._text.encode("ascii", "replace")
293
 
        textlist = [("normal", self._text)]
 
181
        textlist = [(u"normal", self._text)]
294
182
        self._text_widget.set_text(textlist)
295
183
        self._focus_text_widget.set_text([(with_standout[text[0]],
296
184
                                           text[1])
303
191
        # Run update hook, if any
304
192
        if self.update_hook is not None:
305
193
            self.update_hook()
306
 
 
307
 
    def update_timer(self):
308
 
        """called by GLib. Will indefinitely loop until
309
 
        GLib.source_remove() on tag is called
310
 
        """
311
 
        self.update()
312
 
        return True             # Keep calling this
313
 
 
314
 
    def delete(self, **kwargs):
315
 
        if self._update_timer_callback_tag is not None:
316
 
            GLib.source_remove(self._update_timer_callback_tag)
317
 
            self._update_timer_callback_tag = None
318
 
        for match in self.match_objects:
319
 
            match.remove()
320
 
        self.match_objects = ()
 
194
    
 
195
    def delete(self):
321
196
        if self.delete_hook is not None:
322
197
            self.delete_hook(self)
323
 
        return super(MandosClientWidget, self).delete(**kwargs)
324
 
 
325
 
    def render(self, maxcolrow, focus=False):
 
198
    
 
199
    def render(self, (maxcol,), focus=False):
326
200
        """Render differently if we have focus.
327
201
        This overrides the method from urwid.FlowWidget"""
328
 
        return self.current_widget(focus).render(maxcolrow,
 
202
        return self.current_widget(focus).render((maxcol,),
329
203
                                                 focus=focus)
330
 
 
331
 
    def keypress(self, maxcolrow, key):
 
204
    
 
205
    def keypress(self, (maxcol,), key):
332
206
        """Handle keys.
333
207
        This overrides the method from urwid.FlowWidget"""
334
 
        if key == "+":
335
 
            self.proxy.Set(client_interface, "Enabled",
336
 
                           dbus.Boolean(True), ignore_reply=True,
337
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
338
 
        elif key == "-":
339
 
            self.proxy.Set(client_interface, "Enabled", False,
340
 
                           ignore_reply=True,
341
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
342
 
        elif key == "a":
343
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
344
 
                               dbus_interface=client_interface,
345
 
                               ignore_reply=True)
346
 
        elif key == "d":
347
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
348
 
                               dbus_interface=client_interface,
349
 
                               ignore_reply=True)
350
 
        elif key == "R" or key == "_" or key == "ctrl k":
 
208
        if key == u"e" or key == u"+":
 
209
            self.proxy.Enable()
 
210
        elif key == u"d" or key == u"-":
 
211
            self.proxy.Disable()
 
212
        elif key == u"r" or key == u"_" or key == u"ctrl k":
351
213
            self.server_proxy_object.RemoveClient(self.proxy
352
 
                                                  .object_path,
353
 
                                                  ignore_reply=True)
354
 
        elif key == "s":
355
 
            self.proxy.Set(client_interface, "CheckerRunning",
356
 
                           dbus.Boolean(True), ignore_reply=True,
357
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
358
 
        elif key == "S":
359
 
            self.proxy.Set(client_interface, "CheckerRunning",
360
 
                           dbus.Boolean(False), ignore_reply=True,
361
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
362
 
        elif key == "C":
363
 
            self.proxy.CheckedOK(dbus_interface=client_interface,
364
 
                                 ignore_reply=True)
 
214
                                                  .object_path)
 
215
        elif key == u"s":
 
216
            self.proxy.StartChecker()
 
217
        elif key == u"S":
 
218
            self.proxy.StopChecker()
 
219
        elif key == u"C":
 
220
            self.proxy.CheckedOK()
365
221
        # xxx
366
 
#         elif key == "p" or key == "=":
 
222
#         elif key == u"p" or key == "=":
367
223
#             self.proxy.pause()
368
 
#         elif key == "u" or key == ":":
 
224
#         elif key == u"u" or key == ":":
369
225
#             self.proxy.unpause()
370
 
#         elif key == "RET":
 
226
#         elif key == u"RET":
371
227
#             self.open()
372
228
        else:
373
229
            return key
374
 
 
375
 
    def properties_changed(self, interface, properties, invalidated):
376
 
        """Call self.update() if any properties changed.
 
230
    
 
231
    def property_changed(self, property=None, value=None,
 
232
                         *args, **kwargs):
 
233
        """Call self.update() if old value is not new value.
377
234
        This overrides the method from MandosClientPropertyCache"""
378
 
        old_values = {key: self.properties.get(key)
379
 
                      for key in properties.keys()}
380
 
        super(MandosClientWidget, self).properties_changed(
381
 
            interface, properties, invalidated)
382
 
        if any(old_values[key] != self.properties.get(key)
383
 
               for key in old_values):
 
235
        property_name = unicode(property)
 
236
        old_value = self.properties.get(property_name)
 
237
        super(MandosClientWidget, self).property_changed(
 
238
            property=property, value=value, *args, **kwargs)
 
239
        if self.properties.get(property_name) != old_value:
384
240
            self.update()
385
241
 
386
242
 
387
 
def glib_safely(func, retval=True):
388
 
    def safe_func(*args, **kwargs):
389
 
        try:
390
 
            return func(*args, **kwargs)
391
 
        except Exception:
392
 
            log.exception("")
393
 
            return retval
394
 
    return safe_func
395
 
 
396
 
 
397
243
class ConstrainedListBox(urwid.ListBox):
398
244
    """Like a normal urwid.ListBox, but will consume all "up" or
399
245
    "down" key presses, thus not allowing any containing widgets to
400
246
    use them as an excuse to shift focus away from this widget.
401
247
    """
402
 
    def keypress(self, *args, **kwargs):
403
 
        ret = (super(ConstrainedListBox, self)
404
 
               .keypress(*args, **kwargs))
405
 
        if ret in ("up", "down"):
 
248
    def keypress(self, (maxcol, maxrow), key):
 
249
        ret = super(ConstrainedListBox, self).keypress((maxcol, maxrow), key)
 
250
        if ret in (u"up", u"down"):
406
251
            return
407
252
        return ret
408
253
 
409
254
 
410
 
class UserInterface:
 
255
class UserInterface(object):
411
256
    """This is the entire user interface - the whole screen
412
257
    with boxes, lists of client widgets, etc.
413
258
    """
414
259
    def __init__(self, max_log_length=1000):
415
260
        DBusGMainLoop(set_as_default=True)
416
 
 
 
261
        
417
262
        self.screen = urwid.curses_display.Screen()
418
 
 
 
263
        
419
264
        self.screen.register_palette((
420
 
                ("normal",
421
 
                 "default", "default", None),
422
 
                ("bold",
423
 
                 "bold", "default", "bold"),
424
 
                ("underline-blink",
425
 
                 "underline,blink", "default", "underline,blink"),
426
 
                ("standout",
427
 
                 "standout", "default", "standout"),
428
 
                ("bold-underline-blink",
429
 
                 "bold,underline,blink", "default",
430
 
                 "bold,underline,blink"),
431
 
                ("bold-standout",
432
 
                 "bold,standout", "default", "bold,standout"),
433
 
                ("underline-blink-standout",
434
 
                 "underline,blink,standout", "default",
435
 
                 "underline,blink,standout"),
436
 
                ("bold-underline-blink-standout",
437
 
                 "bold,underline,blink,standout", "default",
438
 
                 "bold,underline,blink,standout"),
 
265
                (u"normal",
 
266
                 u"default", u"default", None),
 
267
                (u"bold",
 
268
                 u"default", u"default", u"bold"),
 
269
                (u"underline-blink",
 
270
                 u"default", u"default", u"underline"),
 
271
                (u"standout",
 
272
                 u"default", u"default", u"standout"),
 
273
                (u"bold-underline-blink",
 
274
                 u"default", u"default", (u"bold", u"underline")),
 
275
                (u"bold-standout",
 
276
                 u"default", u"default", (u"bold", u"standout")),
 
277
                (u"underline-blink-standout",
 
278
                 u"default", u"default", (u"underline", u"standout")),
 
279
                (u"bold-underline-blink-standout",
 
280
                 u"default", u"default", (u"bold", u"underline",
 
281
                                          u"standout")),
439
282
                ))
440
 
 
 
283
        
441
284
        if urwid.supports_unicode():
442
 
            self.divider = "─"  # \u2500
 
285
            self.divider = u"─" # \u2500
 
286
            #self.divider = u"━" # \u2501
443
287
        else:
444
 
            self.divider = "_"  # \u005f
445
 
 
 
288
            #self.divider = u"-" # \u002d
 
289
            self.divider = u"_" # \u005f
 
290
        
446
291
        self.screen.start()
447
 
 
 
292
        
448
293
        self.size = self.screen.get_cols_rows()
449
 
 
 
294
        
450
295
        self.clients = urwid.SimpleListWalker([])
451
296
        self.clients_dict = {}
452
 
 
 
297
        
453
298
        # We will add Text widgets to this list
454
 
        self.log = urwid.SimpleListWalker([])
 
299
        self.log = []
455
300
        self.max_log_length = max_log_length
456
 
 
 
301
        
457
302
        # We keep a reference to the log widget so we can remove it
458
303
        # from the ListWalker without it getting destroyed
459
304
        self.logbox = ConstrainedListBox(self.log)
460
 
 
 
305
        
461
306
        # This keeps track of whether self.uilist currently has
462
307
        # self.logbox in it or not
463
308
        self.log_visible = True
464
 
        self.log_wrap = "any"
465
 
 
466
 
        self.loghandler = UILogHandler(self)
467
 
 
 
309
        self.log_wrap = u"any"
 
310
        
468
311
        self.rebuild()
469
 
        self.add_log_line(("bold",
470
 
                           "Mandos Monitor version " + version))
471
 
        self.add_log_line(("bold", "q: Quit  ?: Help"))
472
 
 
473
 
        self.busname = domain + ".Mandos"
474
 
        self.main_loop = GLib.MainLoop()
475
 
 
476
 
    def client_not_found(self, key_id, address):
477
 
        log.info("Client with address %s and key ID %s could"
478
 
                 " not be found", address, key_id)
479
 
 
 
312
        self.log_message_raw((u"bold",
 
313
                              u"Mandos Monitor version " + version))
 
314
        self.log_message_raw((u"bold",
 
315
                              u"q: Quit  ?: Help"))
 
316
        
 
317
        self.busname = domain + '.Mandos'
 
318
        self.main_loop = gobject.MainLoop()
 
319
        self.bus = dbus.SystemBus()
 
320
        mandos_dbus_objc = self.bus.get_object(
 
321
            self.busname, u"/", follow_name_owner_changes=True)
 
322
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
323
                                          dbus_interface
 
324
                                          = server_interface)
 
325
        try:
 
326
            mandos_clients = (self.mandos_serv
 
327
                              .GetAllClientsWithProperties())
 
328
        except dbus.exceptions.DBusException:
 
329
            mandos_clients = dbus.Dictionary()
 
330
        
 
331
        (self.mandos_serv
 
332
         .connect_to_signal(u"ClientRemoved",
 
333
                            self.find_and_remove_client,
 
334
                            dbus_interface=server_interface,
 
335
                            byte_arrays=True))
 
336
        (self.mandos_serv
 
337
         .connect_to_signal(u"ClientAdded",
 
338
                            self.add_new_client,
 
339
                            dbus_interface=server_interface,
 
340
                            byte_arrays=True))
 
341
        (self.mandos_serv
 
342
         .connect_to_signal(u"ClientNotFound",
 
343
                            self.client_not_found,
 
344
                            dbus_interface=server_interface,
 
345
                            byte_arrays=True))
 
346
        for path, client in mandos_clients.iteritems():
 
347
            client_proxy_object = self.bus.get_object(self.busname,
 
348
                                                      path)
 
349
            self.add_client(MandosClientWidget(server_proxy_object
 
350
                                               =self.mandos_serv,
 
351
                                               proxy_object
 
352
                                               =client_proxy_object,
 
353
                                               properties=client,
 
354
                                               update_hook
 
355
                                               =self.refresh,
 
356
                                               delete_hook
 
357
                                               =self.remove_client,
 
358
                                               logger
 
359
                                               =self.log_message),
 
360
                            path=path)
 
361
    
 
362
    def client_not_found(self, fingerprint, address):
 
363
        self.log_message((u"Client with address %s and fingerprint %s"
 
364
                          u" could not be found" % (address,
 
365
                                                    fingerprint)))
 
366
    
480
367
    def rebuild(self):
481
368
        """This rebuilds the User Interface.
482
369
        Call this when the widget layout needs to change"""
483
370
        self.uilist = []
484
 
        # self.uilist.append(urwid.ListBox(self.clients))
485
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
486
 
                                                          clients),
487
 
                                       # header=urwid.Divider(),
 
371
        #self.uilist.append(urwid.ListBox(self.clients))
 
372
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
 
373
                                       #header=urwid.Divider(),
488
374
                                       header=None,
489
 
                                       footer=urwid.Divider(
490
 
                                           div_char=self.divider)))
 
375
                                       footer=urwid.Divider(div_char=self.divider)))
491
376
        if self.log_visible:
492
377
            self.uilist.append(self.logbox)
 
378
            pass
493
379
        self.topwidget = urwid.Pile(self.uilist)
494
 
 
495
 
    def add_log_line(self, markup):
 
380
    
 
381
    def log_message(self, message):
 
382
        timestamp = datetime.datetime.now().isoformat()
 
383
        self.log_message_raw(timestamp + u": " + message)
 
384
    
 
385
    def log_message_raw(self, markup):
 
386
        """Add a log message to the log buffer."""
496
387
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
497
 
        if self.max_log_length:
498
 
            if len(self.log) > self.max_log_length:
499
 
                del self.log[0:(len(self.log) - self.max_log_length)]
500
 
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
501
 
                              coming_from="above")
 
388
        if (self.max_log_length
 
389
            and len(self.log) > self.max_log_length):
 
390
            del self.log[0:len(self.log)-self.max_log_length-1]
 
391
        self.logbox.set_focus(len(self.logbox.body.contents),
 
392
                              coming_from=u"above")
502
393
        self.refresh()
503
 
 
 
394
    
504
395
    def toggle_log_display(self):
505
396
        """Toggle visibility of the log buffer."""
506
397
        self.log_visible = not self.log_visible
507
398
        self.rebuild()
508
 
        log.debug("Log visibility changed to: %s", self.log_visible)
509
 
 
 
399
        self.log_message(u"Log visibility changed to: "
 
400
                         + unicode(self.log_visible))
 
401
    
510
402
    def change_log_display(self):
511
403
        """Change type of log display.
512
404
        Currently, this toggles wrapping of text lines."""
513
 
        if self.log_wrap == "clip":
514
 
            self.log_wrap = "any"
 
405
        if self.log_wrap == u"clip":
 
406
            self.log_wrap = u"any"
515
407
        else:
516
 
            self.log_wrap = "clip"
 
408
            self.log_wrap = u"clip"
517
409
        for textwidget in self.log:
518
410
            textwidget.set_wrap_mode(self.log_wrap)
519
 
        log.debug("Wrap mode: %s", self.log_wrap)
520
 
 
521
 
    def find_and_remove_client(self, path, interfaces):
522
 
        """Find a client by its object path and remove it.
523
 
 
524
 
        This is connected to the InterfacesRemoved signal from the
 
411
        self.log_message(u"Wrap mode: " + self.log_wrap)
 
412
    
 
413
    def find_and_remove_client(self, path, name):
 
414
        """Find an client from its object path and remove it.
 
415
        
 
416
        This is connected to the ClientRemoved signal from the
525
417
        Mandos server object."""
526
 
        if client_interface not in interfaces:
527
 
            # Not a Mandos client object; ignore
528
 
            return
529
418
        try:
530
419
            client = self.clients_dict[path]
531
420
        except KeyError:
532
421
            # not found?
533
 
            log.warning("Unknown client %s removed", path)
534
 
            return
535
 
        client.delete()
536
 
 
537
 
    def add_new_client(self, path, ifs_and_props):
538
 
        """Find a client by its object path and remove it.
539
 
 
540
 
        This is connected to the InterfacesAdded signal from the
541
 
        Mandos server object.
542
 
        """
543
 
        if client_interface not in ifs_and_props:
544
 
            # Not a Mandos client object; ignore
545
 
            return
 
422
            return
 
423
        self.remove_client(client, path)
 
424
    
 
425
    def add_new_client(self, path):
546
426
        client_proxy_object = self.bus.get_object(self.busname, path)
547
 
        self.add_client(MandosClientWidget(
548
 
            server_proxy_object=self.mandos_serv,
549
 
            proxy_object=client_proxy_object,
550
 
            update_hook=self.refresh,
551
 
            delete_hook=self.remove_client,
552
 
            properties=dict(ifs_and_props[client_interface])),
 
427
        self.add_client(MandosClientWidget(server_proxy_object
 
428
                                           =self.mandos_serv,
 
429
                                           proxy_object
 
430
                                           =client_proxy_object,
 
431
                                           update_hook
 
432
                                           =self.refresh,
 
433
                                           delete_hook
 
434
                                           =self.remove_client,
 
435
                                           logger
 
436
                                           =self.log_message),
553
437
                        path=path)
554
 
 
 
438
    
555
439
    def add_client(self, client, path=None):
556
440
        self.clients.append(client)
557
441
        if path is None:
558
442
            path = client.proxy.object_path
559
443
        self.clients_dict[path] = client
560
 
        self.clients.sort(key=lambda c: c.properties["Name"])
 
444
        self.clients.sort(None, lambda c: c.properties[u"name"])
561
445
        self.refresh()
562
 
 
 
446
    
563
447
    def remove_client(self, client, path=None):
564
448
        self.clients.remove(client)
565
449
        if path is None:
566
450
            path = client.proxy.object_path
567
451
        del self.clients_dict[path]
 
452
        if not self.clients_dict:
 
453
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
454
            # is completely emptied, we need to recreate it.
 
455
            self.clients = urwid.SimpleListWalker([])
 
456
            self.rebuild()
568
457
        self.refresh()
569
 
 
 
458
    
570
459
    def refresh(self):
571
460
        """Redraw the screen"""
572
461
        canvas = self.topwidget.render(self.size, focus=True)
573
462
        self.screen.draw_screen(self.size, canvas)
574
 
 
 
463
    
575
464
    def run(self):
576
465
        """Start the main loop and exit when it's done."""
577
 
        log.addHandler(self.loghandler)
578
 
        self.orig_log_propagate = log.propagate
579
 
        log.propagate = False
580
 
        self.orig_log_level = log.level
581
 
        log.setLevel("INFO")
582
 
        self.bus = dbus.SystemBus()
583
 
        mandos_dbus_objc = self.bus.get_object(
584
 
            self.busname, "/", follow_name_owner_changes=True)
585
 
        self.mandos_serv = dbus.Interface(
586
 
            mandos_dbus_objc, dbus_interface=server_interface)
587
 
        try:
588
 
            mandos_clients = (self.mandos_serv
589
 
                              .GetAllClientsWithProperties())
590
 
            if not mandos_clients:
591
 
                log.warning("Note: Server has no clients.")
592
 
        except dbus.exceptions.DBusException:
593
 
            log.warning("Note: No Mandos server running.")
594
 
            mandos_clients = dbus.Dictionary()
595
 
 
596
 
        (self.mandos_serv
597
 
         .connect_to_signal("InterfacesRemoved",
598
 
                            self.find_and_remove_client,
599
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
600
 
                            byte_arrays=True))
601
 
        (self.mandos_serv
602
 
         .connect_to_signal("InterfacesAdded",
603
 
                            self.add_new_client,
604
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
605
 
                            byte_arrays=True))
606
 
        (self.mandos_serv
607
 
         .connect_to_signal("ClientNotFound",
608
 
                            self.client_not_found,
609
 
                            dbus_interface=server_interface,
610
 
                            byte_arrays=True))
611
 
        for path, client in mandos_clients.items():
612
 
            client_proxy_object = self.bus.get_object(self.busname,
613
 
                                                      path)
614
 
            self.add_client(MandosClientWidget(
615
 
                server_proxy_object=self.mandos_serv,
616
 
                proxy_object=client_proxy_object,
617
 
                properties=client,
618
 
                update_hook=self.refresh,
619
 
                delete_hook=self.remove_client),
620
 
                            path=path)
621
 
 
622
466
        self.refresh()
623
 
        self._input_callback_tag = (
624
 
            GLib.io_add_watch(
625
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
626
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
627
 
                glib_safely(self.process_input)))
 
467
        self._input_callback_tag = (gobject.io_add_watch
 
468
                                    (sys.stdin.fileno(),
 
469
                                     gobject.IO_IN,
 
470
                                     self.process_input))
628
471
        self.main_loop.run()
629
472
        # Main loop has finished, we should close everything now
630
 
        GLib.source_remove(self._input_callback_tag)
631
 
        with warnings.catch_warnings():
632
 
            warnings.simplefilter("ignore", BytesWarning)
633
 
            self.screen.stop()
634
 
 
 
473
        gobject.source_remove(self._input_callback_tag)
 
474
        self.screen.stop()
 
475
    
635
476
    def stop(self):
636
477
        self.main_loop.quit()
637
 
        log.removeHandler(self.loghandler)
638
 
        log.propagate = self.orig_log_propagate
639
 
 
 
478
    
640
479
    def process_input(self, source, condition):
641
480
        keys = self.screen.get_input()
642
 
        translations = {"ctrl n": "down",       # Emacs
643
 
                        "ctrl p": "up",         # Emacs
644
 
                        "ctrl v": "page down",  # Emacs
645
 
                        "meta v": "page up",    # Emacs
646
 
                        " ": "page down",       # less
647
 
                        "f": "page down",       # less
648
 
                        "b": "page up",         # less
649
 
                        "j": "down",            # vi
650
 
                        "k": "up",              # vi
651
 
                        }
 
481
        translations = { u"ctrl n": u"down",      # Emacs
 
482
                         u"ctrl p": u"up",        # Emacs
 
483
                         u"ctrl v": u"page down", # Emacs
 
484
                         u"meta v": u"page up",   # Emacs
 
485
                         u" ": u"page down",      # less
 
486
                         u"f": u"page down",      # less
 
487
                         u"b": u"page up",        # less
 
488
                         u"j": u"down",           # vi
 
489
                         u"k": u"up",             # vi
 
490
                         }
652
491
        for key in keys:
653
492
            try:
654
493
                key = translations[key]
655
494
            except KeyError:    # :-)
656
495
                pass
657
 
 
658
 
            if key == "q" or key == "Q":
 
496
            
 
497
            if key == u"q" or key == u"Q":
659
498
                self.stop()
660
499
                break
661
 
            elif key == "window resize":
 
500
            elif key == u"window resize":
662
501
                self.size = self.screen.get_cols_rows()
663
502
                self.refresh()
664
 
            elif key == "ctrl l":
665
 
                self.screen.clear()
 
503
            elif key == u"\f":  # Ctrl-L
666
504
                self.refresh()
667
 
            elif key == "l" or key == "D":
 
505
            elif key == u"l" or key == u"D":
668
506
                self.toggle_log_display()
669
507
                self.refresh()
670
 
            elif key == "w" or key == "i":
 
508
            elif key == u"w" or key == u"i":
671
509
                self.change_log_display()
672
510
                self.refresh()
673
 
            elif key == "?" or key == "f1" or key == "esc":
 
511
            elif key == u"?" or key == u"f1" or key == u"esc":
674
512
                if not self.log_visible:
675
513
                    self.log_visible = True
676
514
                    self.rebuild()
677
 
                self.add_log_line(("bold",
678
 
                                   "  ".join(("q: Quit",
679
 
                                              "?: Help",
680
 
                                              "l: Log window toggle",
681
 
                                              "TAB: Switch window",
682
 
                                              "w: Wrap (log lines)",
683
 
                                              "v: Toggle verbose log",
684
 
                                   ))))
685
 
                self.add_log_line(("bold",
686
 
                                   "  ".join(("Clients:",
687
 
                                              "+: Enable",
688
 
                                              "-: Disable",
689
 
                                              "R: Remove",
690
 
                                              "s: Start new checker",
691
 
                                              "S: Stop checker",
692
 
                                              "C: Checker OK",
693
 
                                              "a: Approve",
694
 
                                              "d: Deny",
695
 
                                   ))))
 
515
                self.log_message_raw((u"bold",
 
516
                                      u"  ".
 
517
                                      join((u"q: Quit",
 
518
                                            u"?: Help",
 
519
                                            u"l: Log window toggle",
 
520
                                            u"TAB: Switch window",
 
521
                                            u"w: Wrap (log)"))))
 
522
                self.log_message_raw((u"bold",
 
523
                                      u"  "
 
524
                                      .join((u"Clients:",
 
525
                                             u"e: Enable",
 
526
                                             u"d: Disable",
 
527
                                             u"r: Remove",
 
528
                                             u"s: Start new checker",
 
529
                                             u"S: Stop checker",
 
530
                                             u"C: Checker OK"))))
696
531
                self.refresh()
697
 
            elif key == "tab":
 
532
            elif key == u"tab":
698
533
                if self.topwidget.get_focus() is self.logbox:
699
534
                    self.topwidget.set_focus(0)
700
535
                else:
701
536
                    self.topwidget.set_focus(self.logbox)
702
537
                self.refresh()
703
 
            elif key == "v":
704
 
                if log.level < logging.INFO:
705
 
                    log.setLevel(logging.INFO)
706
 
                    log.info("Verbose mode: Off")
707
 
                else:
708
 
                    log.setLevel(logging.NOTSET)
709
 
                    log.info("Verbose mode: On")
710
 
            # elif (key == "end" or key == "meta >" or key == "G"
711
 
            #       or key == ">"):
712
 
            #     pass            # xxx end-of-buffer
713
 
            # elif (key == "home" or key == "meta <" or key == "g"
714
 
            #       or key == "<"):
715
 
            #     pass            # xxx beginning-of-buffer
716
 
            # elif key == "ctrl e" or key == "$":
717
 
            #     pass            # xxx move-end-of-line
718
 
            # elif key == "ctrl a" or key == "^":
719
 
            #     pass            # xxx move-beginning-of-line
720
 
            # elif key == "ctrl b" or key == "meta (" or key == "h":
721
 
            #     pass            # xxx left
722
 
            # elif key == "ctrl f" or key == "meta )" or key == "l":
723
 
            #     pass            # xxx right
724
 
            # elif key == "a":
725
 
            #     pass            # scroll up log
726
 
            # elif key == "z":
727
 
            #     pass            # scroll down log
 
538
            #elif (key == u"end" or key == u"meta >" or key == u"G"
 
539
            #      or key == u">"):
 
540
            #    pass            # xxx end-of-buffer
 
541
            #elif (key == u"home" or key == u"meta <" or key == u"g"
 
542
            #      or key == u"<"):
 
543
            #    pass            # xxx beginning-of-buffer
 
544
            #elif key == u"ctrl e" or key == u"$":
 
545
            #    pass            # xxx move-end-of-line
 
546
            #elif key == u"ctrl a" or key == u"^":
 
547
            #    pass            # xxx move-beginning-of-line
 
548
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
 
549
            #    pass            # xxx left
 
550
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
 
551
            #    pass            # xxx right
 
552
            #elif key == u"a":
 
553
            #    pass            # scroll up log
 
554
            #elif key == u"z":
 
555
            #    pass            # scroll down log
728
556
            elif self.topwidget.selectable():
729
557
                self.topwidget.keypress(self.size, key)
730
558
                self.refresh()
731
559
        return True
732
560
 
733
 
 
734
 
class UILogHandler(logging.Handler):
735
 
    def __init__(self, ui, *args, **kwargs):
736
 
        self.ui = ui
737
 
        super(UILogHandler, self).__init__(*args, **kwargs)
738
 
        self.setFormatter(
739
 
            logging.Formatter("%(asctime)s: %(message)s"))
740
 
    def emit(self, record):
741
 
        msg = self.format(record)
742
 
        if record.levelno > logging.INFO:
743
 
            msg = ("bold", msg)
744
 
        self.ui.add_log_line(msg)
745
 
 
746
 
 
747
561
ui = UserInterface()
748
562
try:
749
563
    ui.run()
750
 
except KeyboardInterrupt:
751
 
    with warnings.catch_warnings():
752
 
        warnings.filterwarnings("ignore", "", BytesWarning)
753
 
        ui.screen.stop()
754
 
except Exception:
755
 
    with warnings.catch_warnings():
756
 
        warnings.filterwarnings("ignore", "", BytesWarning)
757
 
        ui.screen.stop()
 
564
except Exception, e:
 
565
    ui.log_message(unicode(e))
 
566
    ui.screen.stop()
758
567
    raise