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  • Committer: Teddy Hogeborn
  • Date: 2014-03-23 20:48:58 UTC
  • Revision ID: teddy@recompile.se-20140323204858-l1x3aiick21oog4y
Improve error message when working around Debian bug #633582.

* plugins-runner.c (main): Improve error message when failing to work
                           around Debian bug #633582.  Also simplify
                           code to always use execve().

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mandos-monitor
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1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
 
3
# 
 
4
# Mandos Monitor - Control and monitor the Mandos server
 
5
# 
 
6
# Copyright © 2009-2014 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[0] == 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 = "1.6.4"
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("PropertyChanged",
 
91
                                         self._property_changed,
 
92
                                         client_interface,
 
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)
 
102
    
 
103
    def _property_changed(self, property, value):
 
104
        """Helper which takes positional arguments"""
 
105
        return self.property_changed(property=property, value=value)
80
106
    
81
107
    def property_changed(self, property=None, value=None):
82
108
        """This is called whenever we get a PropertyChanged signal
84
110
        """
85
111
        # Update properties dict with new value
86
112
        self.properties[property] = value
 
113
    
 
114
    def delete(self):
 
115
        self.property_changed_match.remove()
87
116
 
88
117
 
89
118
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
91
120
    """
92
121
    
93
122
    def __init__(self, server_proxy_object=None, update_hook=None,
94
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
123
                 delete_hook=None, logger=None, **kwargs):
95
124
        # Called on update
96
125
        self.update_hook = update_hook
97
126
        # Called on delete
102
131
        self.logger = logger
103
132
        
104
133
        self._update_timer_callback_tag = None
105
 
        self._update_timer_callback_lock = 0
106
 
        self.last_checker_failed = False
107
134
        
108
135
        # The widget shown normally
109
 
        self._text_widget = urwid.Text(u"")
 
136
        self._text_widget = urwid.Text("")
110
137
        # 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)
 
138
        self._focus_text_widget = urwid.Text("")
 
139
        super(MandosClientWidget, self).__init__(**kwargs)
115
140
        self.update()
116
141
        self.opened = False
117
142
        
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)
 
143
        self.match_objects = (
 
144
            self.proxy.connect_to_signal("CheckerCompleted",
 
145
                                         self.checker_completed,
 
146
                                         client_interface,
 
147
                                         byte_arrays=True),
 
148
            self.proxy.connect_to_signal("CheckerStarted",
 
149
                                         self.checker_started,
 
150
                                         client_interface,
 
151
                                         byte_arrays=True),
 
152
            self.proxy.connect_to_signal("GotSecret",
 
153
                                         self.got_secret,
 
154
                                         client_interface,
 
155
                                         byte_arrays=True),
 
156
            self.proxy.connect_to_signal("NeedApproval",
 
157
                                         self.need_approval,
 
158
                                         client_interface,
 
159
                                         byte_arrays=True),
 
160
            self.proxy.connect_to_signal("Rejected",
 
161
                                         self.rejected,
 
162
                                         client_interface,
 
163
                                         byte_arrays=True))
 
164
        #self.logger('Created client {0}'
 
165
        #            .format(self.properties["Name"]))
156
166
    
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
167
    def using_timer(self, flag):
164
168
        """Call this method with True or False when timer should be
165
169
        activated or deactivated.
166
170
        """
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:
 
171
        if flag and self._update_timer_callback_tag is None:
 
172
            # Will update the shown timer value every second
173
173
            self._update_timer_callback_tag = (gobject.timeout_add
174
174
                                               (1000,
175
175
                                                self.update_timer))
176
 
        elif old and self._update_timer_callback_lock == 0:
 
176
        elif not (flag or self._update_timer_callback_tag is None):
177
177
            gobject.source_remove(self._update_timer_callback_tag)
178
178
            self._update_timer_callback_tag = None
179
179
    
180
180
    def checker_completed(self, exitstatus, condition, command):
181
181
        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))
188
182
            self.update()
189
183
            return
190
184
        # Checker failed
191
 
        if not self.last_checker_failed:
192
 
            self.last_checker_failed = True
193
 
            self.using_timer(True)
194
185
        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)))
 
186
            self.logger('Checker for client {0} (command "{1}")'
 
187
                        ' failed with exit code {2}'
 
188
                        .format(self.properties["Name"], command,
 
189
                                os.WEXITSTATUS(condition)))
199
190
        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)))
 
191
            self.logger('Checker for client {0} (command "{1}") was'
 
192
                        ' killed by signal {2}'
 
193
                        .format(self.properties["Name"], command,
 
194
                                os.WTERMSIG(condition)))
204
195
        elif os.WCOREDUMP(condition):
205
 
            self.logger(u'Checker for client %s (command "%s")'
206
 
                        u' dumped core'
207
 
                        % (self.properties[u"Name"], command))
 
196
            self.logger('Checker for client {0} (command "{1}")'
 
197
                        ' dumped core'
 
198
                        .format(self.properties["Name"], command))
208
199
        else:
209
 
            self.logger(u'Checker for client %s completed'
210
 
                        u' mysteriously')
 
200
            self.logger('Checker for client {0} completed'
 
201
                        ' mysteriously'
 
202
                        .format(self.properties["Name"]))
211
203
        self.update()
212
204
    
213
205
    def checker_started(self, command):
214
 
        #self.logger(u'Client %s started checker "%s"'
215
 
        #            % (self.properties[u"Name"], unicode(command)))
 
206
        """Server signals that a checker started. This could be useful
 
207
           to log in the future. """
 
208
        #self.logger('Client {0} started checker "{1}"'
 
209
        #            .format(self.properties["Name"],
 
210
        #                    str(command)))
216
211
        pass
217
212
    
218
213
    def got_secret(self):
219
 
        self.last_checker_failed = False
220
 
        self.logger(u'Client %s received its secret'
221
 
                    % self.properties[u"Name"])
 
214
        self.logger('Client {0} received its secret'
 
215
                    .format(self.properties["Name"]))
222
216
    
223
217
    def need_approval(self, timeout, default):
224
218
        if not default:
225
 
            message = u'Client %s needs approval within %s seconds'
 
219
            message = 'Client {0} needs approval within {1} seconds'
226
220
        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)
 
221
            message = 'Client {0} will get its secret in {1} seconds'
 
222
        self.logger(message.format(self.properties["Name"],
 
223
                                   timeout/1000))
231
224
    
232
225
    def rejected(self, reason):
233
 
        self.logger(u'Client %s was rejected; reason: %s'
234
 
                    % (self.properties[u"Name"], reason))
 
226
        self.logger('Client {0} was rejected; reason: {1}'
 
227
                    .format(self.properties["Name"], reason))
235
228
    
236
229
    def selectable(self):
237
230
        """Make this a "selectable" widget.
238
231
        This overrides the method from urwid.FlowWidget."""
239
232
        return True
240
233
    
241
 
    def rows(self, (maxcol,), focus=False):
 
234
    def rows(self, maxcolrow, focus=False):
242
235
        """How many rows this widget will occupy might depend on
243
236
        whether we have focus or not.
244
237
        This overrides the method from urwid.FlowWidget"""
245
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
 
238
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
246
239
    
247
240
    def current_widget(self, focus=False):
248
241
        if focus or self.opened:
252
245
    def update(self):
253
246
        "Called when what is visible on the screen should be updated."
254
247
        # 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",
 
248
        with_standout = { "normal": "standout",
 
249
                          "bold": "bold-standout",
 
250
                          "underline-blink":
 
251
                              "underline-blink-standout",
 
252
                          "bold-underline-blink":
 
253
                              "bold-underline-blink-standout",
261
254
                          }
262
 
 
 
255
        
263
256
        # Rebuild focus and non-focus widgets using current properties
264
 
 
 
257
        
265
258
        # 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"]:
 
259
        base = '{name}: '.format(name=self.properties["Name"])
 
260
        if not self.properties["Enabled"]:
 
261
            message = "DISABLED"
 
262
            self.using_timer(False)
 
263
        elif self.properties["ApprovalPending"]:
271
264
            timeout = datetime.timedelta(milliseconds
272
265
                                         = self.properties
273
 
                                         [u"ApprovalDelay"])
 
266
                                         ["ApprovalDelay"])
274
267
            last_approval_request = isoformat_to_datetime(
275
 
                self.properties[u"LastApprovalRequest"])
 
268
                self.properties["LastApprovalRequest"])
276
269
            if last_approval_request is not None:
277
 
                timer = timeout - (datetime.datetime.utcnow()
278
 
                                   - last_approval_request)
 
270
                timer = max(timeout - (datetime.datetime.utcnow()
 
271
                                       - last_approval_request),
 
272
                            datetime.timedelta())
279
273
            else:
280
274
                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])
 
275
            if self.properties["ApprovedByDefault"]:
 
276
                message = "Approval in {0}. (d)eny?"
 
277
            else:
 
278
                message = "Denial in {0}. (a)pprove?"
 
279
            message = message.format(str(timer).rsplit(".", 1)[0])
 
280
            self.using_timer(True)
 
281
        elif self.properties["LastCheckerStatus"] != 0:
 
282
            # When checker has failed, show timer until client expires
 
283
            expires = self.properties["Expires"]
 
284
            if expires == "":
 
285
                timer = datetime.timedelta(0)
 
286
            else:
 
287
                expires = (datetime.datetime.strptime
 
288
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
289
                timer = max(expires - datetime.datetime.utcnow(),
 
290
                            datetime.timedelta())
 
291
            message = ('A checker has failed! Time until client'
 
292
                       ' gets disabled: {0}'
 
293
                       .format(str(timer).rsplit(".", 1)[0]))
 
294
            self.using_timer(True)
298
295
        else:
299
 
            message = u"enabled"
300
 
        self._text = "%s%s" % (base, message)
301
 
            
 
296
            message = "enabled"
 
297
            self.using_timer(False)
 
298
        self._text = "{0}{1}".format(base, message)
 
299
        
302
300
        if not urwid.supports_unicode():
303
301
            self._text = self._text.encode("ascii", "replace")
304
 
        textlist = [(u"normal", self._text)]
 
302
        textlist = [("normal", self._text)]
305
303
        self._text_widget.set_text(textlist)
306
304
        self._focus_text_widget.set_text([(with_standout[text[0]],
307
305
                                           text[1])
316
314
            self.update_hook()
317
315
    
318
316
    def update_timer(self):
319
 
        "called by gobject"
 
317
        """called by gobject. Will indefinitely loop until
 
318
        gobject.source_remove() on tag is called"""
320
319
        self.update()
321
320
        return True             # Keep calling this
322
321
    
323
 
    def delete(self):
 
322
    def delete(self, **kwargs):
324
323
        if self._update_timer_callback_tag is not None:
325
324
            gobject.source_remove(self._update_timer_callback_tag)
326
325
            self._update_timer_callback_tag = None
 
326
        for match in self.match_objects:
 
327
            match.remove()
 
328
        self.match_objects = ()
327
329
        if self.delete_hook is not None:
328
330
            self.delete_hook(self)
 
331
        return super(MandosClientWidget, self).delete(**kwargs)
329
332
    
330
 
    def render(self, (maxcol,), focus=False):
 
333
    def render(self, maxcolrow, focus=False):
331
334
        """Render differently if we have focus.
332
335
        This overrides the method from urwid.FlowWidget"""
333
 
        return self.current_widget(focus).render((maxcol,),
 
336
        return self.current_widget(focus).render(maxcolrow,
334
337
                                                 focus=focus)
335
338
    
336
 
    def keypress(self, (maxcol,), key):
 
339
    def keypress(self, maxcolrow, key):
337
340
        """Handle keys.
338
341
        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":
 
342
        if key == "+":
 
343
            self.proxy.Enable(dbus_interface = client_interface,
 
344
                              ignore_reply=True)
 
345
        elif key == "-":
 
346
            self.proxy.Disable(dbus_interface = client_interface,
 
347
                               ignore_reply=True)
 
348
        elif key == "a":
344
349
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
345
 
                               dbus_interface = client_interface)
346
 
        elif key == u"d":
 
350
                               dbus_interface = client_interface,
 
351
                               ignore_reply=True)
 
352
        elif key == "d":
347
353
            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":
 
354
                                  dbus_interface = client_interface,
 
355
                               ignore_reply=True)
 
356
        elif key == "R" or key == "_" or key == "ctrl k":
350
357
            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)
 
358
                                                  .object_path,
 
359
                                                  ignore_reply=True)
 
360
        elif key == "s":
 
361
            self.proxy.StartChecker(dbus_interface = client_interface,
 
362
                                    ignore_reply=True)
 
363
        elif key == "S":
 
364
            self.proxy.StopChecker(dbus_interface = client_interface,
 
365
                                   ignore_reply=True)
 
366
        elif key == "C":
 
367
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
368
                                 ignore_reply=True)
358
369
        # xxx
359
 
#         elif key == u"p" or key == "=":
 
370
#         elif key == "p" or key == "=":
360
371
#             self.proxy.pause()
361
 
#         elif key == u"u" or key == ":":
 
372
#         elif key == "u" or key == ":":
362
373
#             self.proxy.unpause()
363
 
#         elif key == u"RET":
 
374
#         elif key == "RET":
364
375
#             self.open()
365
376
        else:
366
377
            return key
367
378
    
368
 
    def property_changed(self, property=None, value=None,
369
 
                         *args, **kwargs):
 
379
    def property_changed(self, property=None, **kwargs):
370
380
        """Call self.update() if old value is not new value.
371
381
        This overrides the method from MandosClientPropertyCache"""
372
 
        property_name = unicode(property)
 
382
        property_name = str(property)
373
383
        old_value = self.properties.get(property_name)
374
384
        super(MandosClientWidget, self).property_changed(
375
 
            property=property, value=value, *args, **kwargs)
 
385
            property=property, **kwargs)
376
386
        if self.properties.get(property_name) != old_value:
377
387
            self.update()
378
388
 
382
392
    "down" key presses, thus not allowing any containing widgets to
383
393
    use them as an excuse to shift focus away from this widget.
384
394
    """
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"):
 
395
    def keypress(self, *args, **kwargs):
 
396
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
397
        if ret in ("up", "down"):
389
398
            return
390
399
        return ret
391
400
 
400
409
        self.screen = urwid.curses_display.Screen()
401
410
        
402
411
        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")),
 
412
                ("normal",
 
413
                 "default", "default", None),
 
414
                ("bold",
 
415
                 "bold", "default", "bold"),
 
416
                ("underline-blink",
 
417
                 "underline,blink", "default", "underline,blink"),
 
418
                ("standout",
 
419
                 "standout", "default", "standout"),
 
420
                ("bold-underline-blink",
 
421
                 "bold,underline,blink", "default", "bold,underline,blink"),
 
422
                ("bold-standout",
 
423
                 "bold,standout", "default", "bold,standout"),
 
424
                ("underline-blink-standout",
 
425
                 "underline,blink,standout", "default",
 
426
                 "underline,blink,standout"),
 
427
                ("bold-underline-blink-standout",
 
428
                 "bold,underline,blink,standout", "default",
 
429
                 "bold,underline,blink,standout"),
420
430
                ))
421
431
        
422
432
        if urwid.supports_unicode():
423
 
            self.divider = u"─" # \u2500
424
 
            #self.divider = u"━" # \u2501
 
433
            self.divider = "─" # \u2500
 
434
            #self.divider = "━" # \u2501
425
435
        else:
426
 
            #self.divider = u"-" # \u002d
427
 
            self.divider = u"_" # \u005f
 
436
            #self.divider = "-" # \u002d
 
437
            self.divider = "_" # \u005f
428
438
        
429
439
        self.screen.start()
430
440
        
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 {0} and fingerprint"
 
470
                         " {1} 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
489
    def log_message(self, message):
 
490
        """Log message formatted with timestamp"""
523
491
        timestamp = datetime.datetime.now().isoformat()
524
 
        self.log_message_raw(timestamp + u": " + message)
 
492
        self.log_message_raw(timestamp + ": " + message)
525
493
    
526
494
    def log_message_raw(self, markup):
527
495
        """Add a log message to the log buffer."""
530
498
            and len(self.log) > self.max_log_length):
531
499
            del self.log[0:len(self.log)-self.max_log_length-1]
532
500
        self.logbox.set_focus(len(self.logbox.body.contents),
533
 
                              coming_from=u"above")
 
501
                              coming_from="above")
534
502
        self.refresh()
535
503
    
536
504
    def toggle_log_display(self):
537
505
        """Toggle visibility of the log buffer."""
538
506
        self.log_visible = not self.log_visible
539
507
        self.rebuild()
540
 
        #self.log_message(u"Log visibility changed to: "
541
 
        #                 + unicode(self.log_visible))
 
508
        #self.log_message("Log visibility changed to: "
 
509
        #                 + str(self.log_visible))
542
510
    
543
511
    def change_log_display(self):
544
512
        """Change type of log display.
545
513
        Currently, this toggles wrapping of text lines."""
546
 
        if self.log_wrap == u"clip":
547
 
            self.log_wrap = u"any"
 
514
        if self.log_wrap == "clip":
 
515
            self.log_wrap = "any"
548
516
        else:
549
 
            self.log_wrap = u"clip"
 
517
            self.log_wrap = "clip"
550
518
        for textwidget in self.log:
551
519
            textwidget.set_wrap_mode(self.log_wrap)
552
 
        #self.log_message(u"Wrap mode: " + self.log_wrap)
 
520
        #self.log_message("Wrap mode: " + self.log_wrap)
553
521
    
554
522
    def find_and_remove_client(self, path, name):
555
 
        """Find an client from its object path and remove it.
 
523
        """Find a client by its object path and remove it.
556
524
        
557
525
        This is connected to the ClientRemoved signal from the
558
526
        Mandos server object."""
560
528
            client = self.clients_dict[path]
561
529
        except KeyError:
562
530
            # not found?
 
531
            self.log_message("Unknown client {0!r} ({1!r}) removed"
 
532
                             .format(name, path))
563
533
            return
564
 
        self.remove_client(client, path)
 
534
        client.delete()
565
535
    
566
536
    def add_new_client(self, path):
567
537
        client_proxy_object = self.bus.get_object(self.busname, path)
582
552
        if path is None:
583
553
            path = client.proxy.object_path
584
554
        self.clients_dict[path] = client
585
 
        self.clients.sort(None, lambda c: c.properties[u"Name"])
 
555
        self.clients.sort(key=lambda c: c.properties["Name"])
586
556
        self.refresh()
587
557
    
588
558
    def remove_client(self, client, path=None):
590
560
        if path is None:
591
561
            path = client.proxy.object_path
592
562
        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
563
        self.refresh()
599
564
    
600
565
    def refresh(self):
604
569
    
605
570
    def run(self):
606
571
        """Start the main loop and exit when it's done."""
 
572
        self.bus = dbus.SystemBus()
 
573
        mandos_dbus_objc = self.bus.get_object(
 
574
            self.busname, "/", follow_name_owner_changes=True)
 
575
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
576
                                          dbus_interface
 
577
                                          = server_interface)
 
578
        try:
 
579
            mandos_clients = (self.mandos_serv
 
580
                              .GetAllClientsWithProperties())
 
581
            if not mandos_clients:
 
582
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
583
        except dbus.exceptions.DBusException:
 
584
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
585
            mandos_clients = dbus.Dictionary()
 
586
        
 
587
        (self.mandos_serv
 
588
         .connect_to_signal("ClientRemoved",
 
589
                            self.find_and_remove_client,
 
590
                            dbus_interface=server_interface,
 
591
                            byte_arrays=True))
 
592
        (self.mandos_serv
 
593
         .connect_to_signal("ClientAdded",
 
594
                            self.add_new_client,
 
595
                            dbus_interface=server_interface,
 
596
                            byte_arrays=True))
 
597
        (self.mandos_serv
 
598
         .connect_to_signal("ClientNotFound",
 
599
                            self.client_not_found,
 
600
                            dbus_interface=server_interface,
 
601
                            byte_arrays=True))
 
602
        for path, client in mandos_clients.items():
 
603
            client_proxy_object = self.bus.get_object(self.busname,
 
604
                                                      path)
 
605
            self.add_client(MandosClientWidget(server_proxy_object
 
606
                                               =self.mandos_serv,
 
607
                                               proxy_object
 
608
                                               =client_proxy_object,
 
609
                                               properties=client,
 
610
                                               update_hook
 
611
                                               =self.refresh,
 
612
                                               delete_hook
 
613
                                               =self.remove_client,
 
614
                                               logger
 
615
                                               =self.log_message),
 
616
                            path=path)
 
617
        
607
618
        self.refresh()
608
619
        self._input_callback_tag = (gobject.io_add_watch
609
620
                                    (sys.stdin.fileno(),
619
630
    
620
631
    def process_input(self, source, condition):
621
632
        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
 
633
        translations = { "ctrl n": "down",      # Emacs
 
634
                         "ctrl p": "up",        # Emacs
 
635
                         "ctrl v": "page down", # Emacs
 
636
                         "meta v": "page up",   # Emacs
 
637
                         " ": "page down",      # less
 
638
                         "f": "page down",      # less
 
639
                         "b": "page up",        # less
 
640
                         "j": "down",           # vi
 
641
                         "k": "up",             # vi
631
642
                         }
632
643
        for key in keys:
633
644
            try:
635
646
            except KeyError:    # :-)
636
647
                pass
637
648
            
638
 
            if key == u"q" or key == u"Q":
 
649
            if key == "q" or key == "Q":
639
650
                self.stop()
640
651
                break
641
 
            elif key == u"window resize":
 
652
            elif key == "window resize":
642
653
                self.size = self.screen.get_cols_rows()
643
654
                self.refresh()
644
 
            elif key == u"\f":  # Ctrl-L
 
655
            elif key == "\f":  # Ctrl-L
645
656
                self.refresh()
646
 
            elif key == u"l" or key == u"D":
 
657
            elif key == "l" or key == "D":
647
658
                self.toggle_log_display()
648
659
                self.refresh()
649
 
            elif key == u"w" or key == u"i":
 
660
            elif key == "w" or key == "i":
650
661
                self.change_log_display()
651
662
                self.refresh()
652
 
            elif key == u"?" or key == u"f1" or key == u"esc":
 
663
            elif key == "?" or key == "f1" or key == "esc":
653
664
                if not self.log_visible:
654
665
                    self.log_visible = True
655
666
                    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"))))
 
667
                self.log_message_raw(("bold",
 
668
                                      "  ".
 
669
                                      join(("q: Quit",
 
670
                                            "?: Help",
 
671
                                            "l: Log window toggle",
 
672
                                            "TAB: Switch window",
 
673
                                            "w: Wrap (log)"))))
 
674
                self.log_message_raw(("bold",
 
675
                                      "  "
 
676
                                      .join(("Clients:",
 
677
                                             "+: Enable",
 
678
                                             "-: Disable",
 
679
                                             "R: Remove",
 
680
                                             "s: Start new checker",
 
681
                                             "S: Stop checker",
 
682
                                             "C: Checker OK",
 
683
                                             "a: Approve",
 
684
                                             "d: Deny"))))
674
685
                self.refresh()
675
 
            elif key == u"tab":
 
686
            elif key == "tab":
676
687
                if self.topwidget.get_focus() is self.logbox:
677
688
                    self.topwidget.set_focus(0)
678
689
                else:
679
690
                    self.topwidget.set_focus(self.logbox)
680
691
                self.refresh()
681
 
            #elif (key == u"end" or key == u"meta >" or key == u"G"
682
 
            #      or key == u">"):
 
692
            #elif (key == "end" or key == "meta >" or key == "G"
 
693
            #      or key == ">"):
683
694
            #    pass            # xxx end-of-buffer
684
 
            #elif (key == u"home" or key == u"meta <" or key == u"g"
685
 
            #      or key == u"<"):
 
695
            #elif (key == "home" or key == "meta <" or key == "g"
 
696
            #      or key == "<"):
686
697
            #    pass            # xxx beginning-of-buffer
687
 
            #elif key == u"ctrl e" or key == u"$":
 
698
            #elif key == "ctrl e" or key == "$":
688
699
            #    pass            # xxx move-end-of-line
689
 
            #elif key == u"ctrl a" or key == u"^":
 
700
            #elif key == "ctrl a" or key == "^":
690
701
            #    pass            # xxx move-beginning-of-line
691
 
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
 
702
            #elif key == "ctrl b" or key == "meta (" or key == "h":
692
703
            #    pass            # xxx left
693
 
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
 
704
            #elif key == "ctrl f" or key == "meta )" or key == "l":
694
705
            #    pass            # xxx right
695
 
            #elif key == u"a":
 
706
            #elif key == "a":
696
707
            #    pass            # scroll up log
697
 
            #elif key == u"z":
 
708
            #elif key == "z":
698
709
            #    pass            # scroll down log
699
710
            elif self.topwidget.selectable():
700
711
                self.topwidget.keypress(self.size, key)
706
717
    ui.run()
707
718
except KeyboardInterrupt:
708
719
    ui.screen.stop()
709
 
except Exception, e:
710
 
    ui.log_message(unicode(e))
 
720
except Exception as e:
 
721
    ui.log_message(str(e))
711
722
    ui.screen.stop()
712
723
    raise