/mandos/trunk

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Viewing changes to mandos-monitor

  • Committer: Teddy Hogeborn
  • Date: 2016-06-03 17:18:46 UTC
  • Revision ID: teddy@recompile.se-20160603171846-zr11h4gshlkgoona
mandos-keygen: Try to use ECDSA keys with ssh-keyscan(1) by default.

* mandos-keygen (password): Add "ecdsa-sha2-nistp256" first in list of
                            SSH key types to try to scan for.

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mandos-monitor
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
 
3
# 
 
4
# Mandos Monitor - Control and monitor the Mandos server
 
5
# 
 
6
# Copyright © 2009-2016 Teddy Hogeborn
 
7
# Copyright © 2009-2016 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
 
import signal
 
34
import os
 
35
 
 
36
import datetime
8
37
 
9
38
import urwid.curses_display
10
39
import urwid
11
40
 
12
41
from dbus.mainloop.glib import DBusGMainLoop
13
 
import gobject
 
42
from gi.repository import GLib
14
43
 
15
44
import dbus
16
45
 
17
 
import UserList
 
46
import locale
 
47
 
 
48
if sys.version_info.major == 2:
 
49
    str = unicode
 
50
 
 
51
locale.setlocale(locale.LC_ALL, '')
 
52
 
 
53
import logging
 
54
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
18
55
 
19
56
# Some useful constants
20
 
domain = 'se.bsnet.fukt'
 
57
domain = 'se.recompile'
21
58
server_interface = domain + '.Mandos'
22
59
client_interface = domain + '.Mandos.Client'
23
 
version = "1.0.14"
24
 
 
25
 
# Always run in monochrome mode
26
 
urwid.curses_display.curses.has_colors = lambda : False
27
 
 
28
 
# Urwid doesn't support blinking, but we want it.  Since we have no
29
 
# use for underline on its own, we make underline also always blink.
30
 
urwid.curses_display.curses.A_UNDERLINE |= (
31
 
    urwid.curses_display.curses.A_BLINK)
 
60
version = "1.7.7"
 
61
 
 
62
try:
 
63
    dbus.OBJECT_MANAGER_IFACE
 
64
except AttributeError:
 
65
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
66
 
 
67
def isoformat_to_datetime(iso):
 
68
    "Parse an ISO 8601 date string to a datetime.datetime()"
 
69
    if not iso:
 
70
        return None
 
71
    d, t = iso.split("T", 1)
 
72
    year, month, day = d.split("-", 2)
 
73
    hour, minute, second = t.split(":", 2)
 
74
    second, fraction = divmod(float(second), 1)
 
75
    return datetime.datetime(int(year),
 
76
                             int(month),
 
77
                             int(day),
 
78
                             int(hour),
 
79
                             int(minute),
 
80
                             int(second),           # Whole seconds
 
81
                             int(fraction*1000000)) # Microseconds
32
82
 
33
83
class MandosClientPropertyCache(object):
34
84
    """This wraps a Mandos Client D-Bus proxy object, caches the
35
85
    properties and calls a hook function when any of them are
36
86
    changed.
37
87
    """
38
 
    def __init__(self, proxy_object=None, properties=None, *args,
39
 
                 **kwargs):
 
88
    def __init__(self, proxy_object=None, properties=None, **kwargs):
40
89
        self.proxy = proxy_object # Mandos Client proxy object
41
 
        
42
 
        if properties is None:
43
 
            self.properties = dict()
44
 
        else:
45
 
            self.properties = properties
46
 
        self.proxy.connect_to_signal("PropertyChanged",
47
 
                                     self.property_changed,
48
 
                                     client_interface,
49
 
                                     byte_arrays=True)
50
 
        
51
 
        if properties is None:
52
 
            self.properties.update(self.proxy.GetAll(client_interface,
53
 
                                                     dbus_interface =
54
 
                                                     dbus.PROPERTIES_IFACE))
55
 
        super(MandosClientPropertyCache, self).__init__(
56
 
            proxy_object=proxy_object,
57
 
            properties=properties, *args, **kwargs)
 
90
        self.properties = dict() if properties is None else properties
 
91
        self.property_changed_match = (
 
92
            self.proxy.connect_to_signal("PropertiesChanged",
 
93
                                         self.properties_changed,
 
94
                                         dbus.PROPERTIES_IFACE,
 
95
                                         byte_arrays=True))
 
96
        
 
97
        if properties is None:
 
98
            self.properties.update(
 
99
                self.proxy.GetAll(client_interface,
 
100
                                  dbus_interface
 
101
                                  = dbus.PROPERTIES_IFACE))
 
102
        
 
103
        super(MandosClientPropertyCache, self).__init__(**kwargs)
58
104
    
59
 
    def property_changed(self, property=None, value=None):
60
 
        """This is called whenever we get a PropertyChanged signal
61
 
        It updates the changed property in the "properties" dict.
 
105
    def properties_changed(self, interface, properties, invalidated):
 
106
        """This is called whenever we get a PropertiesChanged signal
 
107
        It updates the changed properties in the "properties" dict.
62
108
        """
63
109
        # Update properties dict with new value
64
 
        self.properties[property] = value
 
110
        if interface == client_interface:
 
111
            self.properties.update(properties)
 
112
    
 
113
    def delete(self):
 
114
        self.property_changed_match.remove()
65
115
 
66
116
 
67
117
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
69
119
    """
70
120
    
71
121
    def __init__(self, server_proxy_object=None, update_hook=None,
72
 
                 delete_hook=None, *args, **kwargs):
 
122
                 delete_hook=None, logger=None, **kwargs):
73
123
        # Called on update
74
124
        self.update_hook = update_hook
75
125
        # Called on delete
76
126
        self.delete_hook = delete_hook
77
127
        # Mandos Server proxy object
78
128
        self.server_proxy_object = server_proxy_object
 
129
        # Logger
 
130
        self.logger = logger
 
131
        
 
132
        self._update_timer_callback_tag = None
79
133
        
80
134
        # The widget shown normally
81
135
        self._text_widget = urwid.Text("")
82
136
        # The widget shown when we have focus
83
137
        self._focus_text_widget = urwid.Text("")
84
 
        super(MandosClientWidget, self).__init__(
85
 
            update_hook=update_hook, delete_hook=delete_hook,
86
 
            *args, **kwargs)
 
138
        super(MandosClientWidget, self).__init__(**kwargs)
87
139
        self.update()
88
140
        self.opened = False
 
141
        
 
142
        self.match_objects = (
 
143
            self.proxy.connect_to_signal("CheckerCompleted",
 
144
                                         self.checker_completed,
 
145
                                         client_interface,
 
146
                                         byte_arrays=True),
 
147
            self.proxy.connect_to_signal("CheckerStarted",
 
148
                                         self.checker_started,
 
149
                                         client_interface,
 
150
                                         byte_arrays=True),
 
151
            self.proxy.connect_to_signal("GotSecret",
 
152
                                         self.got_secret,
 
153
                                         client_interface,
 
154
                                         byte_arrays=True),
 
155
            self.proxy.connect_to_signal("NeedApproval",
 
156
                                         self.need_approval,
 
157
                                         client_interface,
 
158
                                         byte_arrays=True),
 
159
            self.proxy.connect_to_signal("Rejected",
 
160
                                         self.rejected,
 
161
                                         client_interface,
 
162
                                         byte_arrays=True))
 
163
        self.logger('Created client {}'
 
164
                    .format(self.properties["Name"]), level=0)
 
165
    
 
166
    def using_timer(self, flag):
 
167
        """Call this method with True or False when timer should be
 
168
        activated or deactivated.
 
169
        """
 
170
        if flag and self._update_timer_callback_tag is None:
 
171
            # Will update the shown timer value every second
 
172
            self._update_timer_callback_tag = (GLib.timeout_add
 
173
                                               (1000,
 
174
                                                self.update_timer))
 
175
        elif not (flag or self._update_timer_callback_tag is None):
 
176
            GLib.source_remove(self._update_timer_callback_tag)
 
177
            self._update_timer_callback_tag = None
 
178
    
 
179
    def checker_completed(self, exitstatus, condition, command):
 
180
        if exitstatus == 0:
 
181
            self.logger('Checker for client {} (command "{}")'
 
182
                        ' succeeded'.format(self.properties["Name"],
 
183
                                            command), level=0)
 
184
            self.update()
 
185
            return
 
186
        # Checker failed
 
187
        if os.WIFEXITED(condition):
 
188
            self.logger('Checker for client {} (command "{}") failed'
 
189
                        ' with exit code {}'
 
190
                        .format(self.properties["Name"], command,
 
191
                                os.WEXITSTATUS(condition)))
 
192
        elif os.WIFSIGNALED(condition):
 
193
            self.logger('Checker for client {} (command "{}") was'
 
194
                        ' killed by signal {}'
 
195
                        .format(self.properties["Name"], command,
 
196
                                os.WTERMSIG(condition)))
 
197
        self.update()
 
198
    
 
199
    def checker_started(self, command):
 
200
        """Server signals that a checker started."""
 
201
        self.logger('Client {} started checker "{}"'
 
202
                    .format(self.properties["Name"],
 
203
                            command), level=0)
 
204
    
 
205
    def got_secret(self):
 
206
        self.logger('Client {} received its secret'
 
207
                    .format(self.properties["Name"]))
 
208
    
 
209
    def need_approval(self, timeout, default):
 
210
        if not default:
 
211
            message = 'Client {} needs approval within {} seconds'
 
212
        else:
 
213
            message = 'Client {} will get its secret in {} seconds'
 
214
        self.logger(message.format(self.properties["Name"],
 
215
                                   timeout/1000))
 
216
    
 
217
    def rejected(self, reason):
 
218
        self.logger('Client {} was rejected; reason: {}'
 
219
                    .format(self.properties["Name"], reason))
89
220
    
90
221
    def selectable(self):
91
222
        """Make this a "selectable" widget.
92
223
        This overrides the method from urwid.FlowWidget."""
93
224
        return True
94
225
    
95
 
    def rows(self, (maxcol,), focus=False):
 
226
    def rows(self, maxcolrow, focus=False):
96
227
        """How many rows this widget will occupy might depend on
97
228
        whether we have focus or not.
98
229
        This overrides the method from urwid.FlowWidget"""
99
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
 
230
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
100
231
    
101
232
    def current_widget(self, focus=False):
102
233
        if focus or self.opened:
106
237
    def update(self):
107
238
        "Called when what is visible on the screen should be updated."
108
239
        # How to add standout mode to a style
109
 
        with_standout = { u"normal": u"standout",
110
 
                          u"bold": u"bold-standout",
111
 
                          u"underline-blink":
112
 
                              u"underline-blink-standout",
113
 
                          u"bold-underline-blink":
114
 
                              u"bold-underline-blink-standout",
 
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",
115
246
                          }
116
247
        
117
248
        # Rebuild focus and non-focus widgets using current properties
118
 
        self._text = (u'name="%(name)s", enabled=%(enabled)s'
119
 
                      % self.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(milliseconds
 
257
                                         = self.properties
 
258
                                         ["ApprovalDelay"])
 
259
            last_approval_request = isoformat_to_datetime(
 
260
                self.properties["LastApprovalRequest"])
 
261
            if last_approval_request is not None:
 
262
                timer = max(timeout - (datetime.datetime.utcnow()
 
263
                                       - last_approval_request),
 
264
                            datetime.timedelta())
 
265
            else:
 
266
                timer = datetime.timedelta()
 
267
            if self.properties["ApprovedByDefault"]:
 
268
                message = "Approval in {}. (d)eny?"
 
269
            else:
 
270
                message = "Denial in {}. (a)pprove?"
 
271
            message = message.format(str(timer).rsplit(".", 1)[0])
 
272
            self.using_timer(True)
 
273
        elif self.properties["LastCheckerStatus"] != 0:
 
274
            # When checker has failed, show timer until client expires
 
275
            expires = self.properties["Expires"]
 
276
            if expires == "":
 
277
                timer = datetime.timedelta(0)
 
278
            else:
 
279
                expires = (datetime.datetime.strptime
 
280
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
281
                timer = max(expires - datetime.datetime.utcnow(),
 
282
                            datetime.timedelta())
 
283
            message = ('A checker has failed! Time until client'
 
284
                       ' gets disabled: {}'
 
285
                       .format(str(timer).rsplit(".", 1)[0]))
 
286
            self.using_timer(True)
 
287
        else:
 
288
            message = "enabled"
 
289
            self.using_timer(False)
 
290
        self._text = "{}{}".format(base, message)
 
291
        
120
292
        if not urwid.supports_unicode():
121
293
            self._text = self._text.encode("ascii", "replace")
122
 
        textlist = [(u"normal", u"BLARGH: "), (u"bold", self._text)]
 
294
        textlist = [("normal", self._text)]
123
295
        self._text_widget.set_text(textlist)
124
296
        self._focus_text_widget.set_text([(with_standout[text[0]],
125
297
                                           text[1])
133
305
        if self.update_hook is not None:
134
306
            self.update_hook()
135
307
    
136
 
    def delete(self):
 
308
    def update_timer(self):
 
309
        """called by GLib. Will indefinitely loop until
 
310
        GLib.source_remove() on tag is called
 
311
        """
 
312
        self.update()
 
313
        return True             # Keep calling this
 
314
    
 
315
    def delete(self, **kwargs):
 
316
        if self._update_timer_callback_tag is not None:
 
317
            GLib.source_remove(self._update_timer_callback_tag)
 
318
            self._update_timer_callback_tag = None
 
319
        for match in self.match_objects:
 
320
            match.remove()
 
321
        self.match_objects = ()
137
322
        if self.delete_hook is not None:
138
323
            self.delete_hook(self)
 
324
        return super(MandosClientWidget, self).delete(**kwargs)
139
325
    
140
 
    def render(self, (maxcol,), focus=False):
 
326
    def render(self, maxcolrow, focus=False):
141
327
        """Render differently if we have focus.
142
328
        This overrides the method from urwid.FlowWidget"""
143
 
        return self.current_widget(focus).render((maxcol,),
 
329
        return self.current_widget(focus).render(maxcolrow,
144
330
                                                 focus=focus)
145
331
    
146
 
    def keypress(self, (maxcol,), key):
 
332
    def keypress(self, maxcolrow, key):
147
333
        """Handle keys.
148
334
        This overrides the method from urwid.FlowWidget"""
149
 
        if key == u"e" or key == u"+":
150
 
            self.proxy.Enable()
151
 
        elif key == u"d" or key == u"-":
152
 
            self.proxy.Disable()
153
 
        elif key == u"r" or key == u"_":
 
335
        if key == "+":
 
336
            self.proxy.Set(client_interface, "Enabled",
 
337
                           dbus.Boolean(True), ignore_reply = True,
 
338
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
339
        elif key == "-":
 
340
            self.proxy.Set(client_interface, "Enabled", False,
 
341
                           ignore_reply = True,
 
342
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
343
        elif key == "a":
 
344
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
 
345
                               dbus_interface = client_interface,
 
346
                               ignore_reply=True)
 
347
        elif key == "d":
 
348
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
 
349
                                  dbus_interface = client_interface,
 
350
                               ignore_reply=True)
 
351
        elif key == "R" or key == "_" or key == "ctrl k":
154
352
            self.server_proxy_object.RemoveClient(self.proxy
155
 
                                                  .object_path)
156
 
        elif key == u"s":
157
 
            self.proxy.StartChecker()
158
 
        elif key == u"S":
159
 
            self.proxy.StopChecker()
160
 
        elif key == u"C":
161
 
            self.proxy.CheckedOK()
 
353
                                                  .object_path,
 
354
                                                  ignore_reply=True)
 
355
        elif key == "s":
 
356
            self.proxy.Set(client_interface, "CheckerRunning",
 
357
                           dbus.Boolean(True), ignore_reply = True,
 
358
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
359
        elif key == "S":
 
360
            self.proxy.Set(client_interface, "CheckerRunning",
 
361
                           dbus.Boolean(False), ignore_reply = True,
 
362
                           dbus_interface = dbus.PROPERTIES_IFACE)
 
363
        elif key == "C":
 
364
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
365
                                 ignore_reply=True)
162
366
        # xxx
163
 
#         elif key == u"p" or key == "=":
 
367
#         elif key == "p" or key == "=":
164
368
#             self.proxy.pause()
165
 
#         elif key == u"u" or key == ":":
 
369
#         elif key == "u" or key == ":":
166
370
#             self.proxy.unpause()
167
 
#         elif key == u"RET":
 
371
#         elif key == "RET":
168
372
#             self.open()
169
373
        else:
170
374
            return key
171
375
    
172
 
    def property_changed(self, property=None, value=None,
173
 
                         *args, **kwargs):
174
 
        """Call self.update() if old value is not new value.
 
376
    def properties_changed(self, interface, properties, invalidated):
 
377
        """Call self.update() if any properties changed.
175
378
        This overrides the method from MandosClientPropertyCache"""
176
 
        property_name = unicode(property)
177
 
        old_value = self.properties.get(property_name)
178
 
        super(MandosClientWidget, self).property_changed(
179
 
            property=property, value=value, *args, **kwargs)
180
 
        if self.properties.get(property_name) != old_value:
 
379
        old_values = { key: self.properties.get(key)
 
380
                       for key in properties.keys() }
 
381
        super(MandosClientWidget, self).properties_changed(
 
382
            interface, properties, invalidated)
 
383
        if any(old_values[key] != self.properties.get(key)
 
384
               for key in old_values):
181
385
            self.update()
182
386
 
183
387
 
186
390
    "down" key presses, thus not allowing any containing widgets to
187
391
    use them as an excuse to shift focus away from this widget.
188
392
    """
189
 
    def keypress(self, (maxcol, maxrow), key):
190
 
        ret = super(ConstrainedListBox, self).keypress((maxcol, maxrow), key)
191
 
        if ret in (u"up", u"down"):
 
393
    def keypress(self, *args, **kwargs):
 
394
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
395
        if ret in ("up", "down"):
192
396
            return
193
397
        return ret
194
398
 
197
401
    """This is the entire user interface - the whole screen
198
402
    with boxes, lists of client widgets, etc.
199
403
    """
200
 
    def __init__(self, max_log_length=1000):
 
404
    def __init__(self, max_log_length=1000, log_level=1):
201
405
        DBusGMainLoop(set_as_default=True)
202
406
        
203
407
        self.screen = urwid.curses_display.Screen()
204
408
        
205
409
        self.screen.register_palette((
206
 
                (u"normal",
207
 
                 u"default", u"default", None),
208
 
                (u"bold",
209
 
                 u"default", u"default", u"bold"),
210
 
                (u"underline-blink",
211
 
                 u"default", u"default", u"underline"),
212
 
                (u"standout",
213
 
                 u"default", u"default", u"standout"),
214
 
                (u"bold-underline-blink",
215
 
                 u"default", u"default", (u"bold", u"underline")),
216
 
                (u"bold-standout",
217
 
                 u"default", u"default", (u"bold", u"standout")),
218
 
                (u"underline-blink-standout",
219
 
                 u"default", u"default", (u"underline", u"standout")),
220
 
                (u"bold-underline-blink-standout",
221
 
                 u"default", u"default", (u"bold", u"underline",
222
 
                                          u"standout")),
 
410
                ("normal",
 
411
                 "default", "default", None),
 
412
                ("bold",
 
413
                 "bold", "default", "bold"),
 
414
                ("underline-blink",
 
415
                 "underline,blink", "default", "underline,blink"),
 
416
                ("standout",
 
417
                 "standout", "default", "standout"),
 
418
                ("bold-underline-blink",
 
419
                 "bold,underline,blink", "default", "bold,underline,blink"),
 
420
                ("bold-standout",
 
421
                 "bold,standout", "default", "bold,standout"),
 
422
                ("underline-blink-standout",
 
423
                 "underline,blink,standout", "default",
 
424
                 "underline,blink,standout"),
 
425
                ("bold-underline-blink-standout",
 
426
                 "bold,underline,blink,standout", "default",
 
427
                 "bold,underline,blink,standout"),
223
428
                ))
224
429
        
225
430
        if urwid.supports_unicode():
226
 
            #self.divider = u"─" # \u2500
227
 
            self.divider = u"━" # \u2501
 
431
            self.divider = "─" # \u2500
 
432
            #self.divider = "━" # \u2501
228
433
        else:
229
 
            #self.divider = u"-" # \u002d
230
 
            self.divider = u"_" # \u005f
 
434
            #self.divider = "-" # \u002d
 
435
            self.divider = "_" # \u005f
231
436
        
232
437
        self.screen.start()
233
438
        
240
445
        self.log = []
241
446
        self.max_log_length = max_log_length
242
447
        
 
448
        self.log_level = log_level
 
449
        
243
450
        # We keep a reference to the log widget so we can remove it
244
451
        # from the ListWalker without it getting destroyed
245
452
        self.logbox = ConstrainedListBox(self.log)
247
454
        # This keeps track of whether self.uilist currently has
248
455
        # self.logbox in it or not
249
456
        self.log_visible = True
250
 
        self.log_wrap = u"any"
 
457
        self.log_wrap = "any"
251
458
        
252
459
        self.rebuild()
253
 
        self.log_message((u"bold",
254
 
                          u"Mandos Monitor version " + version))
255
 
        self.log_message((u"bold",
256
 
                          u"q: Quit  ?: Help"))
 
460
        self.log_message_raw(("bold",
 
461
                              "Mandos Monitor version " + version))
 
462
        self.log_message_raw(("bold",
 
463
                              "q: Quit  ?: Help"))
257
464
        
258
465
        self.busname = domain + '.Mandos'
259
 
        self.main_loop = gobject.MainLoop()
260
 
        self.bus = dbus.SystemBus()
261
 
        mandos_dbus_objc = self.bus.get_object(
262
 
            self.busname, u"/", follow_name_owner_changes=True)
263
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
264
 
                                          dbus_interface
265
 
                                          = server_interface)
266
 
        try:
267
 
            mandos_clients = (self.mandos_serv
268
 
                              .GetAllClientsWithProperties())
269
 
        except dbus.exceptions.DBusException:
270
 
            mandos_clients = dbus.Dictionary()
271
 
        
272
 
        (self.mandos_serv
273
 
         .connect_to_signal("ClientRemoved",
274
 
                            self.find_and_remove_client,
275
 
                            dbus_interface=server_interface,
276
 
                            byte_arrays=True))
277
 
        (self.mandos_serv
278
 
         .connect_to_signal("ClientAdded",
279
 
                            self.add_new_client,
280
 
                            dbus_interface=server_interface,
281
 
                            byte_arrays=True))
282
 
        for path, client in mandos_clients.iteritems():
283
 
            client_proxy_object = self.bus.get_object(self.busname,
284
 
                                                      path)
285
 
            self.add_client(MandosClientWidget(server_proxy_object
286
 
                                               =self.mandos_serv,
287
 
                                               proxy_object
288
 
                                               =client_proxy_object,
289
 
                                               properties=client,
290
 
                                               update_hook
291
 
                                               =self.refresh,
292
 
                                               delete_hook
293
 
                                               =self.remove_client),
294
 
                            path=path)
 
466
        self.main_loop = GLib.MainLoop()
 
467
    
 
468
    def client_not_found(self, fingerprint, address):
 
469
        self.log_message("Client with address {} and fingerprint {}"
 
470
                         " could not be found"
 
471
                         .format(address, fingerprint))
295
472
    
296
473
    def rebuild(self):
297
474
        """This rebuilds the User Interface.
298
475
        Call this when the widget layout needs to change"""
299
476
        self.uilist = []
300
477
        #self.uilist.append(urwid.ListBox(self.clients))
301
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
 
478
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
479
                                                          clients),
302
480
                                       #header=urwid.Divider(),
303
481
                                       header=None,
304
 
                                       footer=urwid.Divider(div_char=self.divider)))
 
482
                                       footer=
 
483
                                       urwid.Divider(div_char=
 
484
                                                     self.divider)))
305
485
        if self.log_visible:
306
486
            self.uilist.append(self.logbox)
307
 
            pass
308
487
        self.topwidget = urwid.Pile(self.uilist)
309
488
    
310
 
    def log_message(self, markup):
 
489
    def log_message(self, message, level=1):
 
490
        """Log message formatted with timestamp"""
 
491
        if level < self.log_level:
 
492
            return
 
493
        timestamp = datetime.datetime.now().isoformat()
 
494
        self.log_message_raw("{}: {}".format(timestamp, message),
 
495
                             level=level)
 
496
    
 
497
    def log_message_raw(self, markup, level=1):
311
498
        """Add a log message to the log buffer."""
 
499
        if level < self.log_level:
 
500
            return
312
501
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
313
502
        if (self.max_log_length
314
503
            and len(self.log) > self.max_log_length):
315
504
            del self.log[0:len(self.log)-self.max_log_length-1]
 
505
        self.logbox.set_focus(len(self.logbox.body.contents),
 
506
                              coming_from="above")
 
507
        self.refresh()
316
508
    
317
509
    def toggle_log_display(self):
318
510
        """Toggle visibility of the log buffer."""
319
511
        self.log_visible = not self.log_visible
320
512
        self.rebuild()
321
 
        self.log_message(u"Log visibility changed to: "
322
 
                         + unicode(self.log_visible))
 
513
        self.log_message("Log visibility changed to: {}"
 
514
                         .format(self.log_visible), level=0)
323
515
    
324
516
    def change_log_display(self):
325
517
        """Change type of log display.
326
518
        Currently, this toggles wrapping of text lines."""
327
 
        if self.log_wrap == u"clip":
328
 
            self.log_wrap = u"any"
 
519
        if self.log_wrap == "clip":
 
520
            self.log_wrap = "any"
329
521
        else:
330
 
            self.log_wrap = u"clip"
 
522
            self.log_wrap = "clip"
331
523
        for textwidget in self.log:
332
524
            textwidget.set_wrap_mode(self.log_wrap)
333
 
        self.log_message(u"Wrap mode: " + self.log_wrap)
 
525
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
526
                         level=0)
334
527
    
335
 
    def find_and_remove_client(self, path, name):
336
 
        """Find an client from its object path and remove it.
 
528
    def find_and_remove_client(self, path, interfaces):
 
529
        """Find a client by its object path and remove it.
337
530
        
338
 
        This is connected to the ClientRemoved signal from the
 
531
        This is connected to the InterfacesRemoved signal from the
339
532
        Mandos server object."""
 
533
        if client_interface not in interfaces:
 
534
            # Not a Mandos client object; ignore
 
535
            return
340
536
        try:
341
537
            client = self.clients_dict[path]
342
538
        except KeyError:
343
539
            # not found?
 
540
            self.log_message("Unknown client {!r} removed"
 
541
                             .format(path))
344
542
            return
345
 
        self.remove_client(client, path)
 
543
        client.delete()
346
544
    
347
 
    def add_new_client(self, path, properties):
 
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
348
554
        client_proxy_object = self.bus.get_object(self.busname, path)
349
555
        self.add_client(MandosClientWidget(server_proxy_object
350
556
                                           =self.mandos_serv,
351
557
                                           proxy_object
352
558
                                           =client_proxy_object,
353
 
                                           properties=properties,
354
559
                                           update_hook
355
560
                                           =self.refresh,
356
561
                                           delete_hook
357
 
                                           =self.remove_client),
 
562
                                           =self.remove_client,
 
563
                                           logger
 
564
                                           =self.log_message,
 
565
                                           properties
 
566
                                           = dict(ifs_and_props[
 
567
                                               client_interface])),
358
568
                        path=path)
359
569
    
360
570
    def add_client(self, client, path=None):
362
572
        if path is None:
363
573
            path = client.proxy.object_path
364
574
        self.clients_dict[path] = client
365
 
        self.clients.sort(None, lambda c: c.properties[u"name"])
 
575
        self.clients.sort(key=lambda c: c.properties["Name"])
366
576
        self.refresh()
367
577
    
368
578
    def remove_client(self, client, path=None):
370
580
        if path is None:
371
581
            path = client.proxy.object_path
372
582
        del self.clients_dict[path]
373
 
        if not self.clients_dict:
374
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
375
 
            # is completely emptied, we need to recreate it.
376
 
            self.clients = urwid.SimpleListWalker([])
377
 
            self.rebuild()
378
583
        self.refresh()
379
584
    
380
585
    def refresh(self):
384
589
    
385
590
    def run(self):
386
591
        """Start the main loop and exit when it's done."""
 
592
        self.bus = dbus.SystemBus()
 
593
        mandos_dbus_objc = self.bus.get_object(
 
594
            self.busname, "/", follow_name_owner_changes=True)
 
595
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
596
                                          dbus_interface
 
597
                                          = server_interface)
 
598
        try:
 
599
            mandos_clients = (self.mandos_serv
 
600
                              .GetAllClientsWithProperties())
 
601
            if not mandos_clients:
 
602
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
603
        except dbus.exceptions.DBusException:
 
604
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
605
            mandos_clients = dbus.Dictionary()
 
606
        
 
607
        (self.mandos_serv
 
608
         .connect_to_signal("InterfacesRemoved",
 
609
                            self.find_and_remove_client,
 
610
                            dbus_interface
 
611
                            = dbus.OBJECT_MANAGER_IFACE,
 
612
                            byte_arrays=True))
 
613
        (self.mandos_serv
 
614
         .connect_to_signal("InterfacesAdded",
 
615
                            self.add_new_client,
 
616
                            dbus_interface
 
617
                            = dbus.OBJECT_MANAGER_IFACE,
 
618
                            byte_arrays=True))
 
619
        (self.mandos_serv
 
620
         .connect_to_signal("ClientNotFound",
 
621
                            self.client_not_found,
 
622
                            dbus_interface=server_interface,
 
623
                            byte_arrays=True))
 
624
        for path, client in mandos_clients.items():
 
625
            client_proxy_object = self.bus.get_object(self.busname,
 
626
                                                      path)
 
627
            self.add_client(MandosClientWidget(server_proxy_object
 
628
                                               =self.mandos_serv,
 
629
                                               proxy_object
 
630
                                               =client_proxy_object,
 
631
                                               properties=client,
 
632
                                               update_hook
 
633
                                               =self.refresh,
 
634
                                               delete_hook
 
635
                                               =self.remove_client,
 
636
                                               logger
 
637
                                               =self.log_message),
 
638
                            path=path)
 
639
        
387
640
        self.refresh()
388
 
        self._input_callback_tag = (gobject.io_add_watch
 
641
        self._input_callback_tag = (GLib.io_add_watch
389
642
                                    (sys.stdin.fileno(),
390
 
                                     gobject.IO_IN,
 
643
                                     GLib.IO_IN,
391
644
                                     self.process_input))
392
645
        self.main_loop.run()
393
646
        # Main loop has finished, we should close everything now
394
 
        gobject.source_remove(self._input_callback_tag)
 
647
        GLib.source_remove(self._input_callback_tag)
395
648
        self.screen.stop()
396
649
    
397
650
    def stop(self):
399
652
    
400
653
    def process_input(self, source, condition):
401
654
        keys = self.screen.get_input()
402
 
        translations = { u"ctrl n": u"down",      # Emacs
403
 
                         u"ctrl p": u"up",        # Emacs
404
 
                         u"ctrl v": u"page down", # Emacs
405
 
                         u"meta v": u"page up",   # Emacs
406
 
                         u" ": u"page down",      # less
407
 
                         u"f": u"page down",      # less
408
 
                         u"b": u"page up",        # less
409
 
                         u"j": u"down",           # vi
410
 
                         u"k": u"up",             # vi
 
655
        translations = { "ctrl n": "down",      # Emacs
 
656
                         "ctrl p": "up",        # Emacs
 
657
                         "ctrl v": "page down", # Emacs
 
658
                         "meta v": "page up",   # Emacs
 
659
                         " ": "page down",      # less
 
660
                         "f": "page down",      # less
 
661
                         "b": "page up",        # less
 
662
                         "j": "down",           # vi
 
663
                         "k": "up",             # vi
411
664
                         }
412
665
        for key in keys:
413
666
            try:
415
668
            except KeyError:    # :-)
416
669
                pass
417
670
            
418
 
            if key == u"q" or key == u"Q":
 
671
            if key == "q" or key == "Q":
419
672
                self.stop()
420
673
                break
421
 
            elif key == u"window resize":
 
674
            elif key == "window resize":
422
675
                self.size = self.screen.get_cols_rows()
423
676
                self.refresh()
424
 
            elif key == u"\f":  # Ctrl-L
 
677
            elif key == "ctrl l":
 
678
                self.screen.clear()
425
679
                self.refresh()
426
 
            elif key == u"l" or key == u"D":
 
680
            elif key == "l" or key == "D":
427
681
                self.toggle_log_display()
428
682
                self.refresh()
429
 
            elif key == u"w" or key == u"i":
 
683
            elif key == "w" or key == "i":
430
684
                self.change_log_display()
431
685
                self.refresh()
432
 
            elif key == u"?" or key == u"f1":
 
686
            elif key == "?" or key == "f1" or key == "esc":
433
687
                if not self.log_visible:
434
688
                    self.log_visible = True
435
689
                    self.rebuild()
436
 
                self.log_message((u"bold",
437
 
                                  u"  ".join((u"q: Quit",
438
 
                                              u"?: Help",
439
 
                                              u"l: Log window toggle",
440
 
                                              u"TAB: Switch window",
441
 
                                              u"w: Wrap (log)"))))
442
 
                self.log_message((u"bold",
443
 
                                  u"  ".join((u"Clients:",
444
 
                                              u"e: Enable",
445
 
                                              u"d: Disable",
446
 
                                              u"r: Remove",
447
 
                                              u"s: Start new checker",
448
 
                                              u"S: Stop checker",
449
 
                                              u"C: Checker OK"))))
 
690
                self.log_message_raw(("bold",
 
691
                                      "  ".
 
692
                                      join(("q: Quit",
 
693
                                            "?: Help",
 
694
                                            "l: Log window toggle",
 
695
                                            "TAB: Switch window",
 
696
                                            "w: Wrap (log lines)",
 
697
                                            "v: Toggle verbose log",
 
698
                                            ))))
 
699
                self.log_message_raw(("bold",
 
700
                                      "  "
 
701
                                      .join(("Clients:",
 
702
                                             "+: Enable",
 
703
                                             "-: Disable",
 
704
                                             "R: Remove",
 
705
                                             "s: Start new checker",
 
706
                                             "S: Stop checker",
 
707
                                             "C: Checker OK",
 
708
                                             "a: Approve",
 
709
                                             "d: Deny"))))
450
710
                self.refresh()
451
 
            elif key == u"tab":
 
711
            elif key == "tab":
452
712
                if self.topwidget.get_focus() is self.logbox:
453
713
                    self.topwidget.set_focus(0)
454
714
                else:
455
715
                    self.topwidget.set_focus(self.logbox)
456
716
                self.refresh()
457
 
            #elif (key == u"end" or key == u"meta >" or key == u"G"
458
 
            #      or key == u">"):
 
717
            elif key == "v":
 
718
                if self.log_level == 0:
 
719
                    self.log_level = 1
 
720
                    self.log_message("Verbose mode: Off")
 
721
                else:
 
722
                    self.log_level = 0
 
723
                    self.log_message("Verbose mode: On")
 
724
            #elif (key == "end" or key == "meta >" or key == "G"
 
725
            #      or key == ">"):
459
726
            #    pass            # xxx end-of-buffer
460
 
            #elif (key == u"home" or key == u"meta <" or key == u"g"
461
 
            #      or key == u"<"):
 
727
            #elif (key == "home" or key == "meta <" or key == "g"
 
728
            #      or key == "<"):
462
729
            #    pass            # xxx beginning-of-buffer
463
 
            #elif key == u"ctrl e" or key == u"$":
 
730
            #elif key == "ctrl e" or key == "$":
464
731
            #    pass            # xxx move-end-of-line
465
 
            #elif key == u"ctrl a" or key == u"^":
 
732
            #elif key == "ctrl a" or key == "^":
466
733
            #    pass            # xxx move-beginning-of-line
467
 
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
 
734
            #elif key == "ctrl b" or key == "meta (" or key == "h":
468
735
            #    pass            # xxx left
469
 
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
 
736
            #elif key == "ctrl f" or key == "meta )" or key == "l":
470
737
            #    pass            # xxx right
471
 
            #elif key == u"a":
 
738
            #elif key == "a":
472
739
            #    pass            # scroll up log
473
 
            #elif key == u"z":
 
740
            #elif key == "z":
474
741
            #    pass            # scroll down log
475
742
            elif self.topwidget.selectable():
476
743
                self.topwidget.keypress(self.size, key)
480
747
ui = UserInterface()
481
748
try:
482
749
    ui.run()
483
 
except:
 
750
except KeyboardInterrupt:
 
751
    ui.screen.stop()
 
752
except Exception as e:
 
753
    ui.log_message(str(e))
484
754
    ui.screen.stop()
485
755
    raise