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  • Committer: Teddy Hogeborn
  • Date: 2015-05-31 16:13:39 UTC
  • Revision ID: teddy@recompile.se-20150531161339-igb3l0ip3c10ejpz
mandos-ctl: Generate better messages in exceptions.

mandos (rfc3339_duration_to_delta): Remove dead code.  Adjust white
                                    space.
mandos-ctl (rfc3339_duration_to_delta): Do minor formatting and
                                        whitespace adjustments, and
                                        Generate better message in
                                        exception.
(string_to_delta): Adjust quote character in doc string.

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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 © 2009-2014 Teddy Hogeborn
 
7
# Copyright © 2009-2014 Björn Påhlsson
 
8
# 
 
9
# This program is free software: you can redistribute it and/or modify
 
10
# it under the terms of the GNU General Public License as published by
 
11
# the Free Software Foundation, either version 3 of the License, or
 
12
# (at your option) any later version.
 
13
#
 
14
#     This program is distributed in the hope that it will be useful,
 
15
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
16
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
17
#     GNU General Public License for more details.
 
18
# 
 
19
# You should have received a copy of the GNU General Public License
 
20
# along with this program.  If not, see
 
21
# <http://www.gnu.org/licenses/>.
 
22
# 
 
23
# Contact the authors at <mandos@recompile.se>.
 
24
# 
3
25
 
4
 
from __future__ import division, absolute_import, with_statement
 
26
from __future__ import (division, absolute_import, print_function,
 
27
                        unicode_literals)
 
28
try:
 
29
    from future_builtins import *
 
30
except ImportError:
 
31
    pass
5
32
 
6
33
import sys
7
34
import os
8
 
import signal
9
35
 
10
36
import datetime
11
37
 
13
39
import urwid
14
40
 
15
41
from dbus.mainloop.glib import DBusGMainLoop
16
 
import gobject
 
42
try:
 
43
    import gobject
 
44
except ImportError:
 
45
    from gi.repository import GObject as gobject
17
46
 
18
47
import dbus
19
48
 
20
 
import UserList
21
 
 
22
49
import locale
23
50
 
24
 
locale.setlocale(locale.LC_ALL, u'')
 
51
if sys.version_info.major == 2:
 
52
    str = unicode
 
53
 
 
54
locale.setlocale(locale.LC_ALL, '')
25
55
 
26
56
import logging
27
57
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
28
58
 
29
59
# Some useful constants
30
 
domain = 'se.bsnet.fukt'
 
60
domain = 'se.recompile'
31
61
server_interface = domain + '.Mandos'
32
62
client_interface = domain + '.Mandos.Client'
33
 
version = "1.0.15"
34
 
 
35
 
# Always run in monochrome mode
36
 
urwid.curses_display.curses.has_colors = lambda : False
37
 
 
38
 
# Urwid doesn't support blinking, but we want it.  Since we have no
39
 
# use for underline on its own, we make underline also always blink.
40
 
urwid.curses_display.curses.A_UNDERLINE |= (
41
 
    urwid.curses_display.curses.A_BLINK)
 
63
version = "1.6.9"
42
64
 
43
65
def isoformat_to_datetime(iso):
44
66
    "Parse an ISO 8601 date string to a datetime.datetime()"
45
67
    if not iso:
46
68
        return None
47
 
    d, t = iso.split(u"T", 1)
48
 
    year, month, day = d.split(u"-", 2)
49
 
    hour, minute, second = t.split(u":", 2)
 
69
    d, t = iso.split("T", 1)
 
70
    year, month, day = d.split("-", 2)
 
71
    hour, minute, second = t.split(":", 2)
50
72
    second, fraction = divmod(float(second), 1)
51
73
    return datetime.datetime(int(year),
52
74
                             int(month),
61
83
    properties and calls a hook function when any of them are
62
84
    changed.
63
85
    """
64
 
    def __init__(self, proxy_object=None, *args, **kwargs):
 
86
    def __init__(self, proxy_object=None, properties=None, **kwargs):
65
87
        self.proxy = proxy_object # Mandos Client proxy object
66
 
        
67
 
        self.properties = dict()
68
 
        self.proxy.connect_to_signal(u"PropertyChanged",
69
 
                                     self.property_changed,
70
 
                                     client_interface,
71
 
                                     byte_arrays=True)
72
 
        
73
 
        self.properties.update(
74
 
            self.proxy.GetAll(client_interface,
75
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
76
 
 
77
 
        #XXX This break good super behaviour!
78
 
#        super(MandosClientPropertyCache, self).__init__(
79
 
#            *args, **kwargs)
 
88
        self.properties = dict() if properties is None else properties
 
89
        self.property_changed_match = (
 
90
            self.proxy.connect_to_signal("PropertiesChanged",
 
91
                                         self.properties_changed,
 
92
                                         dbus.PROPERTIES_IFACE,
 
93
                                         byte_arrays=True))
 
94
        
 
95
        if properties is None:
 
96
            self.properties.update(
 
97
                self.proxy.GetAll(client_interface,
 
98
                                  dbus_interface
 
99
                                  = dbus.PROPERTIES_IFACE))
 
100
        
 
101
        super(MandosClientPropertyCache, self).__init__(**kwargs)
80
102
    
81
 
    def property_changed(self, property=None, value=None):
82
 
        """This is called whenever we get a PropertyChanged signal
83
 
        It updates the changed property in the "properties" dict.
 
103
    def properties_changed(self, interface, properties, invalidated):
 
104
        """This is called whenever we get a PropertiesChanged signal
 
105
        It updates the changed properties in the "properties" dict.
84
106
        """
85
107
        # Update properties dict with new value
86
 
        self.properties[property] = value
 
108
        self.properties.update(properties)
 
109
    
 
110
    def delete(self):
 
111
        self.property_changed_match.remove()
87
112
 
88
113
 
89
114
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
91
116
    """
92
117
    
93
118
    def __init__(self, server_proxy_object=None, update_hook=None,
94
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
119
                 delete_hook=None, logger=None, **kwargs):
95
120
        # Called on update
96
121
        self.update_hook = update_hook
97
122
        # Called on delete
102
127
        self.logger = logger
103
128
        
104
129
        self._update_timer_callback_tag = None
105
 
        self._update_timer_callback_lock = 0
106
 
        self.last_checker_failed = False
107
130
        
108
131
        # The widget shown normally
109
 
        self._text_widget = urwid.Text(u"")
 
132
        self._text_widget = urwid.Text("")
110
133
        # The widget shown when we have focus
111
 
        self._focus_text_widget = urwid.Text(u"")
112
 
        super(MandosClientWidget, self).__init__(
113
 
            update_hook=update_hook, delete_hook=delete_hook,
114
 
            *args, **kwargs)
 
134
        self._focus_text_widget = urwid.Text("")
 
135
        super(MandosClientWidget, self).__init__(**kwargs)
115
136
        self.update()
116
137
        self.opened = False
117
138
        
118
 
        last_checked_ok = isoformat_to_datetime(self.properties
119
 
                                                [u"LastCheckedOK"])
120
 
        if last_checked_ok is None:
121
 
            self.last_checker_failed = True
122
 
        else:
123
 
            self.last_checker_failed = ((datetime.datetime.utcnow()
124
 
                                         - last_checked_ok)
125
 
                                        > datetime.timedelta
126
 
                                        (milliseconds=
127
 
                                         self.properties
128
 
                                         [u"Interval"]))
129
 
        
130
 
        if self.last_checker_failed:
131
 
            self.using_timer(True)
132
 
        
133
 
        if self.need_approval:
134
 
            self.using_timer(True)
135
 
        
136
 
        self.proxy.connect_to_signal(u"CheckerCompleted",
137
 
                                     self.checker_completed,
138
 
                                     client_interface,
139
 
                                     byte_arrays=True)
140
 
        self.proxy.connect_to_signal(u"CheckerStarted",
141
 
                                     self.checker_started,
142
 
                                     client_interface,
143
 
                                     byte_arrays=True)
144
 
        self.proxy.connect_to_signal(u"GotSecret",
145
 
                                     self.got_secret,
146
 
                                     client_interface,
147
 
                                     byte_arrays=True)
148
 
        self.proxy.connect_to_signal(u"NeedApproval",
149
 
                                     self.need_approval,
150
 
                                     client_interface,
151
 
                                     byte_arrays=True)
152
 
        self.proxy.connect_to_signal(u"Rejected",
153
 
                                     self.rejected,
154
 
                                     client_interface,
155
 
                                     byte_arrays=True)
 
139
        self.match_objects = (
 
140
            self.proxy.connect_to_signal("CheckerCompleted",
 
141
                                         self.checker_completed,
 
142
                                         client_interface,
 
143
                                         byte_arrays=True),
 
144
            self.proxy.connect_to_signal("CheckerStarted",
 
145
                                         self.checker_started,
 
146
                                         client_interface,
 
147
                                         byte_arrays=True),
 
148
            self.proxy.connect_to_signal("GotSecret",
 
149
                                         self.got_secret,
 
150
                                         client_interface,
 
151
                                         byte_arrays=True),
 
152
            self.proxy.connect_to_signal("NeedApproval",
 
153
                                         self.need_approval,
 
154
                                         client_interface,
 
155
                                         byte_arrays=True),
 
156
            self.proxy.connect_to_signal("Rejected",
 
157
                                         self.rejected,
 
158
                                         client_interface,
 
159
                                         byte_arrays=True))
 
160
        self.logger('Created client {}'
 
161
                    .format(self.properties["Name"]), level=0)
156
162
    
157
 
    def property_changed(self, property=None, value=None):
158
 
        super(self, MandosClientWidget).property_changed(property,
159
 
                                                         value)
160
 
        if property == u"ApprovalPending":
161
 
            using_timer(bool(value))
162
 
        
163
163
    def using_timer(self, flag):
164
164
        """Call this method with True or False when timer should be
165
165
        activated or deactivated.
166
166
        """
167
 
        old = self._update_timer_callback_lock
168
 
        if flag:
169
 
            self._update_timer_callback_lock += 1
170
 
        else:
171
 
            self._update_timer_callback_lock -= 1
172
 
        if old == 0 and self._update_timer_callback_lock:
 
167
        if flag and self._update_timer_callback_tag is None:
 
168
            # Will update the shown timer value every second
173
169
            self._update_timer_callback_tag = (gobject.timeout_add
174
170
                                               (1000,
175
171
                                                self.update_timer))
176
 
        elif old and self._update_timer_callback_lock == 0:
 
172
        elif not (flag or self._update_timer_callback_tag is None):
177
173
            gobject.source_remove(self._update_timer_callback_tag)
178
174
            self._update_timer_callback_tag = None
179
175
    
180
176
    def checker_completed(self, exitstatus, condition, command):
181
177
        if exitstatus == 0:
182
 
            if self.last_checker_failed:
183
 
                self.last_checker_failed = False
184
 
                self.using_timer(False)
185
 
            #self.logger(u'Checker for client %s (command "%s")'
186
 
            #            u' was successful'
187
 
            #            % (self.properties[u"Name"], command))
 
178
            self.logger('Checker for client {} (command "{}")'
 
179
                        ' succeeded'.format(self.properties["Name"],
 
180
                                            command), level=0)
188
181
            self.update()
189
182
            return
190
183
        # Checker failed
191
 
        if not self.last_checker_failed:
192
 
            self.last_checker_failed = True
193
 
            self.using_timer(True)
194
184
        if os.WIFEXITED(condition):
195
 
            self.logger(u'Checker for client %s (command "%s")'
196
 
                        u' failed with exit code %s'
197
 
                        % (self.properties[u"Name"], command,
198
 
                           os.WEXITSTATUS(condition)))
 
185
            self.logger('Checker for client {} (command "{}") failed'
 
186
                        ' with exit code {}'
 
187
                        .format(self.properties["Name"], command,
 
188
                                os.WEXITSTATUS(condition)))
199
189
        elif os.WIFSIGNALED(condition):
200
 
            self.logger(u'Checker for client %s (command "%s")'
201
 
                        u' was killed by signal %s'
202
 
                        % (self.properties[u"Name"], command,
203
 
                           os.WTERMSIG(condition)))
 
190
            self.logger('Checker for client {} (command "{}") was'
 
191
                        ' killed by signal {}'
 
192
                        .format(self.properties["Name"], command,
 
193
                                os.WTERMSIG(condition)))
204
194
        elif os.WCOREDUMP(condition):
205
 
            self.logger(u'Checker for client %s (command "%s")'
206
 
                        u' dumped core'
207
 
                        % (self.properties[u"Name"], command))
 
195
            self.logger('Checker for client {} (command "{}") dumped'
 
196
                        ' core'.format(self.properties["Name"],
 
197
                                       command))
208
198
        else:
209
 
            self.logger(u'Checker for client %s completed'
210
 
                        u' mysteriously')
 
199
            self.logger('Checker for client {} completed'
 
200
                        ' mysteriously'
 
201
                        .format(self.properties["Name"]))
211
202
        self.update()
212
203
    
213
204
    def checker_started(self, command):
214
 
        #self.logger(u'Client %s started checker "%s"'
215
 
        #            % (self.properties[u"Name"], unicode(command)))
216
 
        pass
 
205
        """Server signals that a checker started."""
 
206
        self.logger('Client {} started checker "{}"'
 
207
                    .format(self.properties["Name"],
 
208
                            command), level=0)
217
209
    
218
210
    def got_secret(self):
219
 
        self.last_checker_failed = False
220
 
        self.logger(u'Client %s received its secret'
221
 
                    % self.properties[u"Name"])
 
211
        self.logger('Client {} received its secret'
 
212
                    .format(self.properties["Name"]))
222
213
    
223
214
    def need_approval(self, timeout, default):
224
215
        if not default:
225
 
            message = u'Client %s needs approval within %s seconds'
 
216
            message = 'Client {} needs approval within {} seconds'
226
217
        else:
227
 
            message = u'Client %s will get its secret in %s seconds'
228
 
        self.logger(message
229
 
                    % (self.properties[u"Name"], timeout/1000))
230
 
        self.using_timer(True)
 
218
            message = 'Client {} will get its secret in {} seconds'
 
219
        self.logger(message.format(self.properties["Name"],
 
220
                                   timeout/1000))
231
221
    
232
222
    def rejected(self, reason):
233
 
        self.logger(u'Client %s was rejected; reason: %s'
234
 
                    % (self.properties[u"Name"], reason))
 
223
        self.logger('Client {} was rejected; reason: {}'
 
224
                    .format(self.properties["Name"], reason))
235
225
    
236
226
    def selectable(self):
237
227
        """Make this a "selectable" widget.
238
228
        This overrides the method from urwid.FlowWidget."""
239
229
        return True
240
230
    
241
 
    def rows(self, (maxcol,), focus=False):
 
231
    def rows(self, maxcolrow, focus=False):
242
232
        """How many rows this widget will occupy might depend on
243
233
        whether we have focus or not.
244
234
        This overrides the method from urwid.FlowWidget"""
245
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
 
235
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
246
236
    
247
237
    def current_widget(self, focus=False):
248
238
        if focus or self.opened:
252
242
    def update(self):
253
243
        "Called when what is visible on the screen should be updated."
254
244
        # How to add standout mode to a style
255
 
        with_standout = { u"normal": u"standout",
256
 
                          u"bold": u"bold-standout",
257
 
                          u"underline-blink":
258
 
                              u"underline-blink-standout",
259
 
                          u"bold-underline-blink":
260
 
                              u"bold-underline-blink-standout",
 
245
        with_standout = { "normal": "standout",
 
246
                          "bold": "bold-standout",
 
247
                          "underline-blink":
 
248
                              "underline-blink-standout",
 
249
                          "bold-underline-blink":
 
250
                              "bold-underline-blink-standout",
261
251
                          }
262
 
 
 
252
        
263
253
        # Rebuild focus and non-focus widgets using current properties
264
 
 
 
254
        
265
255
        # Base part of a client. Name!
266
 
        base = (u'%(name)s: '
267
 
                      % {u"name": self.properties[u"Name"]})
268
 
        if not self.properties[u"Enabled"]:
269
 
            message = u"DISABLED"
270
 
        elif self.properties[u"ApprovalPending"]:
 
256
        base = '{name}: '.format(name=self.properties["Name"])
 
257
        if not self.properties["Enabled"]:
 
258
            message = "DISABLED"
 
259
            self.using_timer(False)
 
260
        elif self.properties["ApprovalPending"]:
271
261
            timeout = datetime.timedelta(milliseconds
272
262
                                         = self.properties
273
 
                                         [u"ApprovalDelay"])
 
263
                                         ["ApprovalDelay"])
274
264
            last_approval_request = isoformat_to_datetime(
275
 
                self.properties[u"LastApprovalRequest"])
 
265
                self.properties["LastApprovalRequest"])
276
266
            if last_approval_request is not None:
277
 
                timer = timeout - (datetime.datetime.utcnow()
278
 
                                   - last_approval_request)
 
267
                timer = max(timeout - (datetime.datetime.utcnow()
 
268
                                       - last_approval_request),
 
269
                            datetime.timedelta())
279
270
            else:
280
271
                timer = datetime.timedelta()
281
 
            if self.properties[u"ApprovedByDefault"]:
282
 
                message = u"Approval in %s. (d)eny?"
283
 
            else:
284
 
                message = u"Denial in %s. (a)pprove?"
285
 
            message = message % unicode(timer).rsplit(".", 1)[0]
286
 
        elif self.last_checker_failed:
287
 
            timeout = datetime.timedelta(milliseconds
288
 
                                         = self.properties
289
 
                                         [u"Timeout"])
290
 
            last_ok = isoformat_to_datetime(
291
 
                max((self.properties[u"LastCheckedOK"]
292
 
                     or self.properties[u"Created"]),
293
 
                    self.properties[u"LastEnabled"]))
294
 
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
295
 
            message = (u'A checker has failed! Time until client'
296
 
                       u' gets disabled: %s'
297
 
                           % unicode(timer).rsplit(".", 1)[0])
 
272
            if self.properties["ApprovedByDefault"]:
 
273
                message = "Approval in {}. (d)eny?"
 
274
            else:
 
275
                message = "Denial in {}. (a)pprove?"
 
276
            message = message.format(str(timer).rsplit(".", 1)[0])
 
277
            self.using_timer(True)
 
278
        elif self.properties["LastCheckerStatus"] != 0:
 
279
            # When checker has failed, show timer until client expires
 
280
            expires = self.properties["Expires"]
 
281
            if expires == "":
 
282
                timer = datetime.timedelta(0)
 
283
            else:
 
284
                expires = (datetime.datetime.strptime
 
285
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
286
                timer = max(expires - datetime.datetime.utcnow(),
 
287
                            datetime.timedelta())
 
288
            message = ('A checker has failed! Time until client'
 
289
                       ' gets disabled: {}'
 
290
                       .format(str(timer).rsplit(".", 1)[0]))
 
291
            self.using_timer(True)
298
292
        else:
299
 
            message = u"enabled"
300
 
        self._text = "%s%s" % (base, message)
301
 
            
 
293
            message = "enabled"
 
294
            self.using_timer(False)
 
295
        self._text = "{}{}".format(base, message)
 
296
        
302
297
        if not urwid.supports_unicode():
303
298
            self._text = self._text.encode("ascii", "replace")
304
 
        textlist = [(u"normal", self._text)]
 
299
        textlist = [("normal", self._text)]
305
300
        self._text_widget.set_text(textlist)
306
301
        self._focus_text_widget.set_text([(with_standout[text[0]],
307
302
                                           text[1])
316
311
            self.update_hook()
317
312
    
318
313
    def update_timer(self):
319
 
        "called by gobject"
 
314
        """called by gobject. Will indefinitely loop until
 
315
        gobject.source_remove() on tag is called"""
320
316
        self.update()
321
317
        return True             # Keep calling this
322
318
    
323
 
    def delete(self):
 
319
    def delete(self, **kwargs):
324
320
        if self._update_timer_callback_tag is not None:
325
321
            gobject.source_remove(self._update_timer_callback_tag)
326
322
            self._update_timer_callback_tag = None
 
323
        for match in self.match_objects:
 
324
            match.remove()
 
325
        self.match_objects = ()
327
326
        if self.delete_hook is not None:
328
327
            self.delete_hook(self)
 
328
        return super(MandosClientWidget, self).delete(**kwargs)
329
329
    
330
 
    def render(self, (maxcol,), focus=False):
 
330
    def render(self, maxcolrow, focus=False):
331
331
        """Render differently if we have focus.
332
332
        This overrides the method from urwid.FlowWidget"""
333
 
        return self.current_widget(focus).render((maxcol,),
 
333
        return self.current_widget(focus).render(maxcolrow,
334
334
                                                 focus=focus)
335
335
    
336
 
    def keypress(self, (maxcol,), key):
 
336
    def keypress(self, maxcolrow, key):
337
337
        """Handle keys.
338
338
        This overrides the method from urwid.FlowWidget"""
339
 
        if key == u"+":
340
 
            self.proxy.Enable(dbus_interface = client_interface)
341
 
        elif key == u"-":
342
 
            self.proxy.Disable(dbus_interface = client_interface)
343
 
        elif key == u"a":
 
339
        if key == "+":
 
340
            self.proxy.Enable(dbus_interface = client_interface,
 
341
                              ignore_reply=True)
 
342
        elif key == "-":
 
343
            self.proxy.Disable(dbus_interface = client_interface,
 
344
                               ignore_reply=True)
 
345
        elif key == "a":
344
346
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
345
 
                               dbus_interface = client_interface)
346
 
        elif key == u"d":
 
347
                               dbus_interface = client_interface,
 
348
                               ignore_reply=True)
 
349
        elif key == "d":
347
350
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
348
 
                                  dbus_interface = client_interface)
349
 
        elif key == u"r" or key == u"_" or key == u"ctrl k":
 
351
                                  dbus_interface = client_interface,
 
352
                               ignore_reply=True)
 
353
        elif key == "R" or key == "_" or key == "ctrl k":
350
354
            self.server_proxy_object.RemoveClient(self.proxy
351
 
                                                  .object_path)
352
 
        elif key == u"s":
353
 
            self.proxy.StartChecker(dbus_interface = client_interface)
354
 
        elif key == u"S":
355
 
            self.proxy.StopChecker(dbus_interface = client_interface)
356
 
        elif key == u"C":
357
 
            self.proxy.CheckedOK(dbus_interface = client_interface)
 
355
                                                  .object_path,
 
356
                                                  ignore_reply=True)
 
357
        elif key == "s":
 
358
            self.proxy.StartChecker(dbus_interface = client_interface,
 
359
                                    ignore_reply=True)
 
360
        elif key == "S":
 
361
            self.proxy.StopChecker(dbus_interface = client_interface,
 
362
                                   ignore_reply=True)
 
363
        elif key == "C":
 
364
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
365
                                 ignore_reply=True)
358
366
        # xxx
359
 
#         elif key == u"p" or key == "=":
 
367
#         elif key == "p" or key == "=":
360
368
#             self.proxy.pause()
361
 
#         elif key == u"u" or key == ":":
 
369
#         elif key == "u" or key == ":":
362
370
#             self.proxy.unpause()
363
 
#         elif key == u"RET":
 
371
#         elif key == "RET":
364
372
#             self.open()
365
373
        else:
366
374
            return key
367
375
    
368
 
    def property_changed(self, property=None, value=None,
369
 
                         *args, **kwargs):
370
 
        """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.
371
378
        This overrides the method from MandosClientPropertyCache"""
372
 
        property_name = unicode(property)
373
 
        old_value = self.properties.get(property_name)
374
 
        super(MandosClientWidget, self).property_changed(
375
 
            property=property, value=value, *args, **kwargs)
376
 
        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):
377
385
            self.update()
378
386
 
379
387
 
382
390
    "down" key presses, thus not allowing any containing widgets to
383
391
    use them as an excuse to shift focus away from this widget.
384
392
    """
385
 
    def keypress(self, (maxcol, maxrow), key):
386
 
        ret = super(ConstrainedListBox, self).keypress((maxcol,
387
 
                                                        maxrow), key)
388
 
        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"):
389
396
            return
390
397
        return ret
391
398
 
394
401
    """This is the entire user interface - the whole screen
395
402
    with boxes, lists of client widgets, etc.
396
403
    """
397
 
    def __init__(self, max_log_length=1000):
 
404
    def __init__(self, max_log_length=1000, log_level=1):
398
405
        DBusGMainLoop(set_as_default=True)
399
406
        
400
407
        self.screen = urwid.curses_display.Screen()
401
408
        
402
409
        self.screen.register_palette((
403
 
                (u"normal",
404
 
                 u"default", u"default", None),
405
 
                (u"bold",
406
 
                 u"default", u"default", u"bold"),
407
 
                (u"underline-blink",
408
 
                 u"default", u"default", u"underline"),
409
 
                (u"standout",
410
 
                 u"default", u"default", u"standout"),
411
 
                (u"bold-underline-blink",
412
 
                 u"default", u"default", (u"bold", u"underline")),
413
 
                (u"bold-standout",
414
 
                 u"default", u"default", (u"bold", u"standout")),
415
 
                (u"underline-blink-standout",
416
 
                 u"default", u"default", (u"underline", u"standout")),
417
 
                (u"bold-underline-blink-standout",
418
 
                 u"default", u"default", (u"bold", u"underline",
419
 
                                          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"),
420
428
                ))
421
429
        
422
430
        if urwid.supports_unicode():
423
 
            self.divider = u"─" # \u2500
424
 
            #self.divider = u"━" # \u2501
 
431
            self.divider = "─" # \u2500
 
432
            #self.divider = "━" # \u2501
425
433
        else:
426
 
            #self.divider = u"-" # \u002d
427
 
            self.divider = u"_" # \u005f
 
434
            #self.divider = "-" # \u002d
 
435
            self.divider = "_" # \u005f
428
436
        
429
437
        self.screen.start()
430
438
        
437
445
        self.log = []
438
446
        self.max_log_length = max_log_length
439
447
        
 
448
        self.log_level = log_level
 
449
        
440
450
        # We keep a reference to the log widget so we can remove it
441
451
        # from the ListWalker without it getting destroyed
442
452
        self.logbox = ConstrainedListBox(self.log)
444
454
        # This keeps track of whether self.uilist currently has
445
455
        # self.logbox in it or not
446
456
        self.log_visible = True
447
 
        self.log_wrap = u"any"
 
457
        self.log_wrap = "any"
448
458
        
449
459
        self.rebuild()
450
 
        self.log_message_raw((u"bold",
451
 
                              u"Mandos Monitor version " + version))
452
 
        self.log_message_raw((u"bold",
453
 
                              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"))
454
464
        
455
465
        self.busname = domain + '.Mandos'
456
466
        self.main_loop = gobject.MainLoop()
457
 
        self.bus = dbus.SystemBus()
458
 
        mandos_dbus_objc = self.bus.get_object(
459
 
            self.busname, u"/", follow_name_owner_changes=True)
460
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
461
 
                                          dbus_interface
462
 
                                          = server_interface)
463
 
        try:
464
 
            mandos_clients = (self.mandos_serv
465
 
                              .GetAllClientsWithProperties())
466
 
        except dbus.exceptions.DBusException:
467
 
            mandos_clients = dbus.Dictionary()
468
 
        
469
 
        (self.mandos_serv
470
 
         .connect_to_signal(u"ClientRemoved",
471
 
                            self.find_and_remove_client,
472
 
                            dbus_interface=server_interface,
473
 
                            byte_arrays=True))
474
 
        (self.mandos_serv
475
 
         .connect_to_signal(u"ClientAdded",
476
 
                            self.add_new_client,
477
 
                            dbus_interface=server_interface,
478
 
                            byte_arrays=True))
479
 
        (self.mandos_serv
480
 
         .connect_to_signal(u"ClientNotFound",
481
 
                            self.client_not_found,
482
 
                            dbus_interface=server_interface,
483
 
                            byte_arrays=True))
484
 
        for path, client in mandos_clients.iteritems():
485
 
            client_proxy_object = self.bus.get_object(self.busname,
486
 
                                                      path)
487
 
            self.add_client(MandosClientWidget(server_proxy_object
488
 
                                               =self.mandos_serv,
489
 
                                               proxy_object
490
 
                                               =client_proxy_object,
491
 
                                               properties=client,
492
 
                                               update_hook
493
 
                                               =self.refresh,
494
 
                                               delete_hook
495
 
                                               =self.remove_client,
496
 
                                               logger
497
 
                                               =self.log_message),
498
 
                            path=path)
499
467
    
500
468
    def client_not_found(self, fingerprint, address):
501
 
        self.log_message((u"Client with address %s and fingerprint %s"
502
 
                          u" could not be found" % (address,
503
 
                                                    fingerprint)))
 
469
        self.log_message("Client with address {} and fingerprint {}"
 
470
                         " could not be found"
 
471
                         .format(address, fingerprint))
504
472
    
505
473
    def rebuild(self):
506
474
        """This rebuilds the User Interface.
516
484
                                                     self.divider)))
517
485
        if self.log_visible:
518
486
            self.uilist.append(self.logbox)
519
 
            pass
520
487
        self.topwidget = urwid.Pile(self.uilist)
521
488
    
522
 
    def log_message(self, message):
 
489
    def log_message(self, message, level=1):
 
490
        """Log message formatted with timestamp"""
 
491
        if level < self.log_level:
 
492
            return
523
493
        timestamp = datetime.datetime.now().isoformat()
524
 
        self.log_message_raw(timestamp + u": " + message)
 
494
        self.log_message_raw("{}: {}".format(timestamp, message),
 
495
                             level=level)
525
496
    
526
 
    def log_message_raw(self, markup):
 
497
    def log_message_raw(self, markup, level=1):
527
498
        """Add a log message to the log buffer."""
 
499
        if level < self.log_level:
 
500
            return
528
501
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
529
502
        if (self.max_log_length
530
503
            and len(self.log) > self.max_log_length):
531
504
            del self.log[0:len(self.log)-self.max_log_length-1]
532
505
        self.logbox.set_focus(len(self.logbox.body.contents),
533
 
                              coming_from=u"above")
 
506
                              coming_from="above")
534
507
        self.refresh()
535
508
    
536
509
    def toggle_log_display(self):
537
510
        """Toggle visibility of the log buffer."""
538
511
        self.log_visible = not self.log_visible
539
512
        self.rebuild()
540
 
        #self.log_message(u"Log visibility changed to: "
541
 
        #                 + unicode(self.log_visible))
 
513
        self.log_message("Log visibility changed to: {}"
 
514
                         .format(self.log_visible), level=0)
542
515
    
543
516
    def change_log_display(self):
544
517
        """Change type of log display.
545
518
        Currently, this toggles wrapping of text lines."""
546
 
        if self.log_wrap == u"clip":
547
 
            self.log_wrap = u"any"
 
519
        if self.log_wrap == "clip":
 
520
            self.log_wrap = "any"
548
521
        else:
549
 
            self.log_wrap = u"clip"
 
522
            self.log_wrap = "clip"
550
523
        for textwidget in self.log:
551
524
            textwidget.set_wrap_mode(self.log_wrap)
552
 
        #self.log_message(u"Wrap mode: " + self.log_wrap)
 
525
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
526
                         level=0)
553
527
    
554
528
    def find_and_remove_client(self, path, name):
555
 
        """Find an client from its object path and remove it.
 
529
        """Find a client by its object path and remove it.
556
530
        
557
531
        This is connected to the ClientRemoved signal from the
558
532
        Mandos server object."""
560
534
            client = self.clients_dict[path]
561
535
        except KeyError:
562
536
            # not found?
 
537
            self.log_message("Unknown client {!r} ({!r}) removed"
 
538
                             .format(name, path))
563
539
            return
564
 
        self.remove_client(client, path)
 
540
        client.delete()
565
541
    
566
542
    def add_new_client(self, path):
567
543
        client_proxy_object = self.bus.get_object(self.busname, path)
582
558
        if path is None:
583
559
            path = client.proxy.object_path
584
560
        self.clients_dict[path] = client
585
 
        self.clients.sort(None, lambda c: c.properties[u"Name"])
 
561
        self.clients.sort(key=lambda c: c.properties["Name"])
586
562
        self.refresh()
587
563
    
588
564
    def remove_client(self, client, path=None):
590
566
        if path is None:
591
567
            path = client.proxy.object_path
592
568
        del self.clients_dict[path]
593
 
        if not self.clients_dict:
594
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
595
 
            # is completely emptied, we need to recreate it.
596
 
            self.clients = urwid.SimpleListWalker([])
597
 
            self.rebuild()
598
569
        self.refresh()
599
570
    
600
571
    def refresh(self):
604
575
    
605
576
    def run(self):
606
577
        """Start the main loop and exit when it's done."""
 
578
        self.bus = dbus.SystemBus()
 
579
        mandos_dbus_objc = self.bus.get_object(
 
580
            self.busname, "/", follow_name_owner_changes=True)
 
581
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
582
                                          dbus_interface
 
583
                                          = server_interface)
 
584
        try:
 
585
            mandos_clients = (self.mandos_serv
 
586
                              .GetAllClientsWithProperties())
 
587
            if not mandos_clients:
 
588
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
589
        except dbus.exceptions.DBusException:
 
590
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
591
            mandos_clients = dbus.Dictionary()
 
592
        
 
593
        (self.mandos_serv
 
594
         .connect_to_signal("ClientRemoved",
 
595
                            self.find_and_remove_client,
 
596
                            dbus_interface=server_interface,
 
597
                            byte_arrays=True))
 
598
        (self.mandos_serv
 
599
         .connect_to_signal("ClientAdded",
 
600
                            self.add_new_client,
 
601
                            dbus_interface=server_interface,
 
602
                            byte_arrays=True))
 
603
        (self.mandos_serv
 
604
         .connect_to_signal("ClientNotFound",
 
605
                            self.client_not_found,
 
606
                            dbus_interface=server_interface,
 
607
                            byte_arrays=True))
 
608
        for path, client in mandos_clients.items():
 
609
            client_proxy_object = self.bus.get_object(self.busname,
 
610
                                                      path)
 
611
            self.add_client(MandosClientWidget(server_proxy_object
 
612
                                               =self.mandos_serv,
 
613
                                               proxy_object
 
614
                                               =client_proxy_object,
 
615
                                               properties=client,
 
616
                                               update_hook
 
617
                                               =self.refresh,
 
618
                                               delete_hook
 
619
                                               =self.remove_client,
 
620
                                               logger
 
621
                                               =self.log_message),
 
622
                            path=path)
 
623
        
607
624
        self.refresh()
608
625
        self._input_callback_tag = (gobject.io_add_watch
609
626
                                    (sys.stdin.fileno(),
619
636
    
620
637
    def process_input(self, source, condition):
621
638
        keys = self.screen.get_input()
622
 
        translations = { u"ctrl n": u"down",      # Emacs
623
 
                         u"ctrl p": u"up",        # Emacs
624
 
                         u"ctrl v": u"page down", # Emacs
625
 
                         u"meta v": u"page up",   # Emacs
626
 
                         u" ": u"page down",      # less
627
 
                         u"f": u"page down",      # less
628
 
                         u"b": u"page up",        # less
629
 
                         u"j": u"down",           # vi
630
 
                         u"k": u"up",             # vi
 
639
        translations = { "ctrl n": "down",      # Emacs
 
640
                         "ctrl p": "up",        # Emacs
 
641
                         "ctrl v": "page down", # Emacs
 
642
                         "meta v": "page up",   # Emacs
 
643
                         " ": "page down",      # less
 
644
                         "f": "page down",      # less
 
645
                         "b": "page up",        # less
 
646
                         "j": "down",           # vi
 
647
                         "k": "up",             # vi
631
648
                         }
632
649
        for key in keys:
633
650
            try:
635
652
            except KeyError:    # :-)
636
653
                pass
637
654
            
638
 
            if key == u"q" or key == u"Q":
 
655
            if key == "q" or key == "Q":
639
656
                self.stop()
640
657
                break
641
 
            elif key == u"window resize":
 
658
            elif key == "window resize":
642
659
                self.size = self.screen.get_cols_rows()
643
660
                self.refresh()
644
 
            elif key == u"\f":  # Ctrl-L
 
661
            elif key == "ctrl l":
 
662
                self.screen.clear()
645
663
                self.refresh()
646
 
            elif key == u"l" or key == u"D":
 
664
            elif key == "l" or key == "D":
647
665
                self.toggle_log_display()
648
666
                self.refresh()
649
 
            elif key == u"w" or key == u"i":
 
667
            elif key == "w" or key == "i":
650
668
                self.change_log_display()
651
669
                self.refresh()
652
 
            elif key == u"?" or key == u"f1" or key == u"esc":
 
670
            elif key == "?" or key == "f1" or key == "esc":
653
671
                if not self.log_visible:
654
672
                    self.log_visible = True
655
673
                    self.rebuild()
656
 
                self.log_message_raw((u"bold",
657
 
                                      u"  ".
658
 
                                      join((u"q: Quit",
659
 
                                            u"?: Help",
660
 
                                            u"l: Log window toggle",
661
 
                                            u"TAB: Switch window",
662
 
                                            u"w: Wrap (log)"))))
663
 
                self.log_message_raw((u"bold",
664
 
                                      u"  "
665
 
                                      .join((u"Clients:",
666
 
                                             u"+: Enable",
667
 
                                             u"-: Disable",
668
 
                                             u"r: Remove",
669
 
                                             u"s: Start new checker",
670
 
                                             u"S: Stop checker",
671
 
                                             u"C: Checker OK",
672
 
                                             u"a: Approve",
673
 
                                             u"d: Deny"))))
 
674
                self.log_message_raw(("bold",
 
675
                                      "  ".
 
676
                                      join(("q: Quit",
 
677
                                            "?: Help",
 
678
                                            "l: Log window toggle",
 
679
                                            "TAB: Switch window",
 
680
                                            "w: Wrap (log lines)",
 
681
                                            "v: Toggle verbose log",
 
682
                                            ))))
 
683
                self.log_message_raw(("bold",
 
684
                                      "  "
 
685
                                      .join(("Clients:",
 
686
                                             "+: Enable",
 
687
                                             "-: Disable",
 
688
                                             "R: Remove",
 
689
                                             "s: Start new checker",
 
690
                                             "S: Stop checker",
 
691
                                             "C: Checker OK",
 
692
                                             "a: Approve",
 
693
                                             "d: Deny"))))
674
694
                self.refresh()
675
 
            elif key == u"tab":
 
695
            elif key == "tab":
676
696
                if self.topwidget.get_focus() is self.logbox:
677
697
                    self.topwidget.set_focus(0)
678
698
                else:
679
699
                    self.topwidget.set_focus(self.logbox)
680
700
                self.refresh()
681
 
            #elif (key == u"end" or key == u"meta >" or key == u"G"
682
 
            #      or key == u">"):
 
701
            elif key == "v":
 
702
                if self.log_level == 0:
 
703
                    self.log_level = 1
 
704
                    self.log_message("Verbose mode: Off")
 
705
                else:
 
706
                    self.log_level = 0
 
707
                    self.log_message("Verbose mode: On")
 
708
            #elif (key == "end" or key == "meta >" or key == "G"
 
709
            #      or key == ">"):
683
710
            #    pass            # xxx end-of-buffer
684
 
            #elif (key == u"home" or key == u"meta <" or key == u"g"
685
 
            #      or key == u"<"):
 
711
            #elif (key == "home" or key == "meta <" or key == "g"
 
712
            #      or key == "<"):
686
713
            #    pass            # xxx beginning-of-buffer
687
 
            #elif key == u"ctrl e" or key == u"$":
 
714
            #elif key == "ctrl e" or key == "$":
688
715
            #    pass            # xxx move-end-of-line
689
 
            #elif key == u"ctrl a" or key == u"^":
 
716
            #elif key == "ctrl a" or key == "^":
690
717
            #    pass            # xxx move-beginning-of-line
691
 
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
 
718
            #elif key == "ctrl b" or key == "meta (" or key == "h":
692
719
            #    pass            # xxx left
693
 
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
 
720
            #elif key == "ctrl f" or key == "meta )" or key == "l":
694
721
            #    pass            # xxx right
695
 
            #elif key == u"a":
 
722
            #elif key == "a":
696
723
            #    pass            # scroll up log
697
 
            #elif key == u"z":
 
724
            #elif key == "z":
698
725
            #    pass            # scroll down log
699
726
            elif self.topwidget.selectable():
700
727
                self.topwidget.keypress(self.size, key)
706
733
    ui.run()
707
734
except KeyboardInterrupt:
708
735
    ui.screen.stop()
709
 
except Exception, e:
710
 
    ui.log_message(unicode(e))
 
736
except Exception as e:
 
737
    ui.log_message(str(e))
711
738
    ui.screen.stop()
712
739
    raise