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Viewing changes to mandos-monitor

* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
                                       and changed "CheckedOK" key to
                                       "C".
  (UserInterface.__init__): Show version number and brief help on start.
  (UserInterface.process_input): Help key now shows help in log
                                 buffer, and shows log buffer if
                                 hidden.  Commented out
                                 non-implemented keys.

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added added

removed removed

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1
 
#!/usr/bin/python3 -bbI
 
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
#
4
 
# Mandos Monitor - Control and monitor the Mandos server
5
 
#
6
 
# Copyright © 2009-2019 Teddy Hogeborn
7
 
# Copyright © 2009-2019 Björn Påhlsson
8
 
#
9
 
# This file is part of Mandos.
10
 
#
11
 
# Mandos is free software: you can redistribute it and/or modify it
12
 
# under the terms of the GNU General Public License as published by
13
 
# the Free Software Foundation, either version 3 of the License, or
14
 
# (at your option) any later version.
15
 
#
16
 
#     Mandos is distributed in the hope that it will be useful, but
17
 
#     WITHOUT ANY WARRANTY; without even the implied warranty of
18
 
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19
 
#     GNU General Public License for more details.
20
 
#
21
 
# You should have received a copy of the GNU General Public License
22
 
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
23
 
#
24
 
# Contact the authors at <mandos@recompile.se>.
25
 
#
26
 
from __future__ import (division, absolute_import, print_function,
27
 
                        unicode_literals)
28
3
 
29
 
try:
30
 
    from future_builtins import *
31
 
except ImportError:
32
 
    pass
 
4
from __future__ import division, absolute_import, with_statement
33
5
 
34
6
import sys
35
 
import logging
36
 
import os
37
 
import warnings
38
 
import datetime
39
 
import locale
 
7
import signal
40
8
 
41
9
import urwid.curses_display
42
10
import urwid
43
11
 
44
12
from dbus.mainloop.glib import DBusGMainLoop
45
 
from gi.repository import GLib
 
13
import gobject
46
14
 
47
15
import dbus
48
16
 
49
 
if sys.version_info.major == 2:
50
 
    __metaclass__ = type
51
 
    str = unicode
52
 
    input = raw_input
53
 
 
54
 
# Show warnings by default
55
 
if not sys.warnoptions:
56
 
    warnings.simplefilter("default")
57
 
 
58
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
59
 
logging.basicConfig(level="NOTSET", # Show all messages
60
 
                    format="%(message)s") # Show basic log messages
61
 
 
62
 
logging.captureWarnings(True)   # Show warnings via the logging system
63
 
 
64
 
locale.setlocale(locale.LC_ALL, "")
65
 
 
66
 
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
67
 
logging.getLogger("urwid").setLevel(logging.INFO)
 
17
import UserList
68
18
 
69
19
# Some useful constants
70
 
domain = "se.recompile"
71
 
server_interface = domain + ".Mandos"
72
 
client_interface = domain + ".Mandos.Client"
73
 
version = "1.8.17"
74
 
 
75
 
try:
76
 
    dbus.OBJECT_MANAGER_IFACE
77
 
except AttributeError:
78
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
79
 
 
80
 
 
81
 
def isoformat_to_datetime(iso):
82
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
83
 
    if not iso:
84
 
        return None
85
 
    d, t = iso.split("T", 1)
86
 
    year, month, day = d.split("-", 2)
87
 
    hour, minute, second = t.split(":", 2)
88
 
    second, fraction = divmod(float(second), 1)
89
 
    return datetime.datetime(int(year),
90
 
                             int(month),
91
 
                             int(day),
92
 
                             int(hour),
93
 
                             int(minute),
94
 
                             int(second),            # Whole seconds
95
 
                             int(fraction*1000000))  # Microseconds
96
 
 
97
 
 
98
 
class MandosClientPropertyCache:
 
20
domain = 'se.bsnet.fukt'
 
21
server_interface = domain + '.Mandos'
 
22
client_interface = domain + '.Mandos.Client'
 
23
version = "1.0.14"
 
24
 
 
25
# Always run in monochrome mode
 
26
urwid.curses_display.curses.has_colors = lambda : False
 
27
 
 
28
# Urwid doesn't support blinking, but we want it.  Since we have no
 
29
# use for underline on its own, we make underline also always blink.
 
30
urwid.curses_display.curses.A_UNDERLINE |= (
 
31
    urwid.curses_display.curses.A_BLINK)
 
32
 
 
33
class MandosClientPropertyCache(object):
99
34
    """This wraps a Mandos Client D-Bus proxy object, caches the
100
35
    properties and calls a hook function when any of them are
101
36
    changed.
102
37
    """
103
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
104
 
        self.proxy = proxy_object  # Mandos Client proxy object
105
 
        self.properties = dict() if properties is None else properties
106
 
        self.property_changed_match = (
107
 
            self.proxy.connect_to_signal("PropertiesChanged",
108
 
                                         self.properties_changed,
109
 
                                         dbus.PROPERTIES_IFACE,
110
 
                                         byte_arrays=True))
111
 
 
112
 
        if properties is None:
113
 
            self.properties.update(self.proxy.GetAll(
114
 
                client_interface,
115
 
                dbus_interface=dbus.PROPERTIES_IFACE))
116
 
 
117
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
118
 
 
119
 
    def properties_changed(self, interface, properties, invalidated):
120
 
        """This is called whenever we get a PropertiesChanged signal
121
 
        It updates the changed properties in the "properties" dict.
 
38
    def __init__(self, proxy_object=None, properties=None, *args,
 
39
                 **kwargs):
 
40
        self.proxy = proxy_object # Mandos Client proxy object
 
41
        
 
42
        if properties is None:
 
43
            self.properties = dict()
 
44
        else:
 
45
            self.properties = properties
 
46
        self.proxy.connect_to_signal("PropertyChanged",
 
47
                                     self.property_changed,
 
48
                                     client_interface,
 
49
                                     byte_arrays=True)
 
50
        
 
51
        if properties is None:
 
52
            self.properties.update(self.proxy.GetAll(client_interface,
 
53
                                                     dbus_interface =
 
54
                                                     dbus.PROPERTIES_IFACE))
 
55
        super(MandosClientPropertyCache, self).__init__(
 
56
            proxy_object=proxy_object,
 
57
            properties=properties, *args, **kwargs)
 
58
    
 
59
    def property_changed(self, property=None, value=None):
 
60
        """This is called whenever we get a PropertyChanged signal
 
61
        It updates the changed property in the "properties" dict.
122
62
        """
123
63
        # Update properties dict with new value
124
 
        if interface == client_interface:
125
 
            self.properties.update(properties)
126
 
 
127
 
    def delete(self):
128
 
        self.property_changed_match.remove()
129
 
 
130
 
 
131
 
class MandosClientWidget(MandosClientPropertyCache, urwid.Widget):
 
64
        self.properties[property] = value
 
65
 
 
66
 
 
67
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
132
68
    """A Mandos Client which is visible on the screen.
133
69
    """
134
 
 
135
 
    _sizing = frozenset(["flow"])
136
 
 
 
70
    
137
71
    def __init__(self, server_proxy_object=None, update_hook=None,
138
 
                 delete_hook=None, **kwargs):
 
72
                 delete_hook=None, *args, **kwargs):
139
73
        # Called on update
140
74
        self.update_hook = update_hook
141
75
        # Called on delete
142
76
        self.delete_hook = delete_hook
143
77
        # Mandos Server proxy object
144
78
        self.server_proxy_object = server_proxy_object
145
 
 
146
 
        self._update_timer_callback_tag = None
147
 
 
 
79
        
148
80
        # The widget shown normally
149
81
        self._text_widget = urwid.Text("")
150
82
        # The widget shown when we have focus
151
83
        self._focus_text_widget = urwid.Text("")
152
 
        super(MandosClientWidget, self).__init__(**kwargs)
 
84
        super(MandosClientWidget, self).__init__(
 
85
            update_hook=update_hook, delete_hook=delete_hook,
 
86
            *args, **kwargs)
153
87
        self.update()
154
88
        self.opened = False
155
 
 
156
 
        self.match_objects = (
157
 
            self.proxy.connect_to_signal("CheckerCompleted",
158
 
                                         self.checker_completed,
159
 
                                         client_interface,
160
 
                                         byte_arrays=True),
161
 
            self.proxy.connect_to_signal("CheckerStarted",
162
 
                                         self.checker_started,
163
 
                                         client_interface,
164
 
                                         byte_arrays=True),
165
 
            self.proxy.connect_to_signal("GotSecret",
166
 
                                         self.got_secret,
167
 
                                         client_interface,
168
 
                                         byte_arrays=True),
169
 
            self.proxy.connect_to_signal("NeedApproval",
170
 
                                         self.need_approval,
171
 
                                         client_interface,
172
 
                                         byte_arrays=True),
173
 
            self.proxy.connect_to_signal("Rejected",
174
 
                                         self.rejected,
175
 
                                         client_interface,
176
 
                                         byte_arrays=True))
177
 
        log.debug("Created client %s", self.properties["Name"])
178
 
 
179
 
    def using_timer(self, flag):
180
 
        """Call this method with True or False when timer should be
181
 
        activated or deactivated.
182
 
        """
183
 
        if flag and self._update_timer_callback_tag is None:
184
 
            # Will update the shown timer value every second
185
 
            self._update_timer_callback_tag = (
186
 
                GLib.timeout_add(1000,
187
 
                                 glib_safely(self.update_timer)))
188
 
        elif not (flag or self._update_timer_callback_tag is None):
189
 
            GLib.source_remove(self._update_timer_callback_tag)
190
 
            self._update_timer_callback_tag = None
191
 
 
192
 
    def checker_completed(self, exitstatus, condition, command):
193
 
        if exitstatus == 0:
194
 
            log.debug('Checker for client %s (command "%s")'
195
 
                      " succeeded", self.properties["Name"], command)
196
 
            self.update()
197
 
            return
198
 
        # Checker failed
199
 
        if os.WIFEXITED(condition):
200
 
            log.info('Checker for client %s (command "%s") failed'
201
 
                     " with exit code %d", self.properties["Name"],
202
 
                     command, os.WEXITSTATUS(condition))
203
 
        elif os.WIFSIGNALED(condition):
204
 
            log.info('Checker for client %s (command "%s") was'
205
 
                     " killed by signal %d", self.properties["Name"],
206
 
                     command, os.WTERMSIG(condition))
207
 
        self.update()
208
 
 
209
 
    def checker_started(self, command):
210
 
        """Server signals that a checker started."""
211
 
        log.debug('Client %s started checker "%s"',
212
 
                  self.properties["Name"], command)
213
 
 
214
 
    def got_secret(self):
215
 
        log.info("Client %s received its secret",
216
 
                 self.properties["Name"])
217
 
 
218
 
    def need_approval(self, timeout, default):
219
 
        if not default:
220
 
            message = "Client %s needs approval within %f seconds"
221
 
        else:
222
 
            message = "Client %s will get its secret in %f seconds"
223
 
        log.info(message, self.properties["Name"], timeout/1000)
224
 
 
225
 
    def rejected(self, reason):
226
 
        log.info("Client %s was rejected; reason: %s",
227
 
                 self.properties["Name"], reason)
228
 
 
 
89
    
229
90
    def selectable(self):
230
91
        """Make this a "selectable" widget.
231
 
        This overrides the method from urwid.Widget."""
 
92
        This overrides the method from urwid.FlowWidget."""
232
93
        return True
233
 
 
234
 
    def rows(self, maxcolrow, focus=False):
 
94
    
 
95
    def rows(self, (maxcol,), focus=False):
235
96
        """How many rows this widget will occupy might depend on
236
97
        whether we have focus or not.
237
 
        This overrides the method from urwid.Widget"""
238
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
239
 
 
 
98
        This overrides the method from urwid.FlowWidget"""
 
99
        return self.current_widget(focus).rows((maxcol,), focus=focus)
 
100
    
240
101
    def current_widget(self, focus=False):
241
102
        if focus or self.opened:
242
103
            return self._focus_widget
243
104
        return self._widget
244
 
 
 
105
    
245
106
    def update(self):
246
107
        "Called when what is visible on the screen should be updated."
247
108
        # How to add standout mode to a style
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",
254
 
                         }
255
 
 
 
109
        with_standout = { u"normal": u"standout",
 
110
                          u"bold": u"bold-standout",
 
111
                          u"underline-blink":
 
112
                              u"underline-blink-standout",
 
113
                          u"bold-underline-blink":
 
114
                              u"bold-underline-blink-standout",
 
115
                          }
 
116
        
256
117
        # Rebuild focus and non-focus widgets using current properties
257
 
 
258
 
        # Base part of a client. Name!
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"]:
264
 
            timeout = datetime.timedelta(
265
 
                milliseconds=self.properties["ApprovalDelay"])
266
 
            last_approval_request = isoformat_to_datetime(
267
 
                self.properties["LastApprovalRequest"])
268
 
            if last_approval_request is not None:
269
 
                timer = max(timeout - (datetime.datetime.utcnow()
270
 
                                       - last_approval_request),
271
 
                            datetime.timedelta())
272
 
            else:
273
 
                timer = datetime.timedelta()
274
 
            if self.properties["ApprovedByDefault"]:
275
 
                message = "Approval in {}. (d)eny?"
276
 
            else:
277
 
                message = "Denial in {}. (a)pprove?"
278
 
            message = message.format(str(timer).rsplit(".", 1)[0])
279
 
            self.using_timer(True)
280
 
        elif self.properties["LastCheckerStatus"] != 0:
281
 
            # When checker has failed, show timer until client expires
282
 
            expires = self.properties["Expires"]
283
 
            if expires == "":
284
 
                timer = datetime.timedelta(0)
285
 
            else:
286
 
                expires = (datetime.datetime.strptime
287
 
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
288
 
                timer = max(expires - datetime.datetime.utcnow(),
289
 
                            datetime.timedelta())
290
 
            message = ("A checker has failed! Time until client"
291
 
                       " gets disabled: {}"
292
 
                       .format(str(timer).rsplit(".", 1)[0]))
293
 
            self.using_timer(True)
294
 
        else:
295
 
            message = "enabled"
296
 
            self.using_timer(False)
297
 
        self._text = "{}{}".format(base, message)
298
 
 
 
118
        self._text = (u'name="%(name)s", enabled=%(enabled)s'
 
119
                      % self.properties)
299
120
        if not urwid.supports_unicode():
300
121
            self._text = self._text.encode("ascii", "replace")
301
 
        textlist = [("normal", self._text)]
 
122
        textlist = [(u"normal", u"BLARGH: "), (u"bold", self._text)]
302
123
        self._text_widget.set_text(textlist)
303
124
        self._focus_text_widget.set_text([(with_standout[text[0]],
304
125
                                           text[1])
311
132
        # Run update hook, if any
312
133
        if self.update_hook is not None:
313
134
            self.update_hook()
314
 
 
315
 
    def update_timer(self):
316
 
        """called by GLib. Will indefinitely loop until
317
 
        GLib.source_remove() on tag is called
318
 
        """
319
 
        self.update()
320
 
        return True             # Keep calling this
321
 
 
322
 
    def delete(self, **kwargs):
323
 
        if self._update_timer_callback_tag is not None:
324
 
            GLib.source_remove(self._update_timer_callback_tag)
325
 
            self._update_timer_callback_tag = None
326
 
        for match in self.match_objects:
327
 
            match.remove()
328
 
        self.match_objects = ()
 
135
    
 
136
    def delete(self):
329
137
        if self.delete_hook is not None:
330
138
            self.delete_hook(self)
331
 
        return super(MandosClientWidget, self).delete(**kwargs)
332
 
 
333
 
    def render(self, maxcolrow, focus=False):
 
139
    
 
140
    def render(self, (maxcol,), focus=False):
334
141
        """Render differently if we have focus.
335
 
        This overrides the method from urwid.Widget"""
336
 
        return self.current_widget(focus).render(maxcolrow,
 
142
        This overrides the method from urwid.FlowWidget"""
 
143
        return self.current_widget(focus).render((maxcol,),
337
144
                                                 focus=focus)
338
 
 
339
 
    def keypress(self, maxcolrow, key):
 
145
    
 
146
    def keypress(self, (maxcol,), key):
340
147
        """Handle keys.
341
 
        This overrides the method from urwid.Widget"""
342
 
        if key == "+":
343
 
            self.proxy.Set(client_interface, "Enabled",
344
 
                           dbus.Boolean(True), ignore_reply=True,
345
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
346
 
        elif key == "-":
347
 
            self.proxy.Set(client_interface, "Enabled", False,
348
 
                           ignore_reply=True,
349
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
350
 
        elif key == "a":
351
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
352
 
                               dbus_interface=client_interface,
353
 
                               ignore_reply=True)
354
 
        elif key == "d":
355
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
356
 
                               dbus_interface=client_interface,
357
 
                               ignore_reply=True)
358
 
        elif key == "R" or key == "_" or key == "ctrl k":
 
148
        This overrides the method from urwid.FlowWidget"""
 
149
        if key == u"e" or key == u"+":
 
150
            self.proxy.Enable()
 
151
        elif key == u"d" or key == u"-":
 
152
            self.proxy.Disable()
 
153
        elif key == u"r" or key == u"_":
359
154
            self.server_proxy_object.RemoveClient(self.proxy
360
 
                                                  .object_path,
361
 
                                                  ignore_reply=True)
362
 
        elif key == "s":
363
 
            self.proxy.Set(client_interface, "CheckerRunning",
364
 
                           dbus.Boolean(True), ignore_reply=True,
365
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
366
 
        elif key == "S":
367
 
            self.proxy.Set(client_interface, "CheckerRunning",
368
 
                           dbus.Boolean(False), ignore_reply=True,
369
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
370
 
        elif key == "C":
371
 
            self.proxy.CheckedOK(dbus_interface=client_interface,
372
 
                                 ignore_reply=True)
 
155
                                                  .object_path)
 
156
        elif key == u"s":
 
157
            self.proxy.StartChecker()
 
158
        elif key == u"S":
 
159
            self.proxy.StopChecker()
 
160
        elif key == u"C":
 
161
            self.proxy.CheckedOK()
373
162
        # xxx
374
 
#         elif key == "p" or key == "=":
 
163
#         elif key == u"p" or key == "=":
375
164
#             self.proxy.pause()
376
 
#         elif key == "u" or key == ":":
 
165
#         elif key == u"u" or key == ":":
377
166
#             self.proxy.unpause()
378
 
#         elif key == "RET":
 
167
#         elif key == u"RET":
379
168
#             self.open()
380
169
        else:
381
170
            return key
382
 
 
383
 
    def properties_changed(self, interface, properties, invalidated):
384
 
        """Call self.update() if any properties changed.
 
171
    
 
172
    def property_changed(self, property=None, value=None,
 
173
                         *args, **kwargs):
 
174
        """Call self.update() if old value is not new value.
385
175
        This overrides the method from MandosClientPropertyCache"""
386
 
        old_values = {key: self.properties.get(key)
387
 
                      for key in properties.keys()}
388
 
        super(MandosClientWidget, self).properties_changed(
389
 
            interface, properties, invalidated)
390
 
        if any(old_values[key] != self.properties.get(key)
391
 
               for key in old_values):
 
176
        property_name = unicode(property)
 
177
        old_value = self.properties.get(property_name)
 
178
        super(MandosClientWidget, self).property_changed(
 
179
            property=property, value=value, *args, **kwargs)
 
180
        if self.properties.get(property_name) != old_value:
392
181
            self.update()
393
182
 
394
183
 
395
 
def glib_safely(func, retval=True):
396
 
    def safe_func(*args, **kwargs):
397
 
        try:
398
 
            return func(*args, **kwargs)
399
 
        except Exception:
400
 
            log.exception("")
401
 
            return retval
402
 
    return safe_func
403
 
 
404
 
 
405
184
class ConstrainedListBox(urwid.ListBox):
406
185
    """Like a normal urwid.ListBox, but will consume all "up" or
407
186
    "down" key presses, thus not allowing any containing widgets to
408
187
    use them as an excuse to shift focus away from this widget.
409
188
    """
410
 
    def keypress(self, *args, **kwargs):
411
 
        ret = (super(ConstrainedListBox, self)
412
 
               .keypress(*args, **kwargs))
413
 
        if ret in ("up", "down"):
 
189
    def keypress(self, (maxcol, maxrow), key):
 
190
        ret = super(ConstrainedListBox, self).keypress((maxcol, maxrow), key)
 
191
        if ret in (u"up", u"down"):
414
192
            return
415
193
        return ret
416
194
 
417
195
 
418
 
class UserInterface:
 
196
class UserInterface(object):
419
197
    """This is the entire user interface - the whole screen
420
198
    with boxes, lists of client widgets, etc.
421
199
    """
422
200
    def __init__(self, max_log_length=1000):
423
201
        DBusGMainLoop(set_as_default=True)
424
 
 
 
202
        
425
203
        self.screen = urwid.curses_display.Screen()
426
 
 
 
204
        
427
205
        self.screen.register_palette((
428
 
                ("normal",
429
 
                 "default", "default", None),
430
 
                ("bold",
431
 
                 "bold", "default", "bold"),
432
 
                ("underline-blink",
433
 
                 "underline,blink", "default", "underline,blink"),
434
 
                ("standout",
435
 
                 "standout", "default", "standout"),
436
 
                ("bold-underline-blink",
437
 
                 "bold,underline,blink", "default",
438
 
                 "bold,underline,blink"),
439
 
                ("bold-standout",
440
 
                 "bold,standout", "default", "bold,standout"),
441
 
                ("underline-blink-standout",
442
 
                 "underline,blink,standout", "default",
443
 
                 "underline,blink,standout"),
444
 
                ("bold-underline-blink-standout",
445
 
                 "bold,underline,blink,standout", "default",
446
 
                 "bold,underline,blink,standout"),
 
206
                (u"normal",
 
207
                 u"default", u"default", None),
 
208
                (u"bold",
 
209
                 u"default", u"default", u"bold"),
 
210
                (u"underline-blink",
 
211
                 u"default", u"default", u"underline"),
 
212
                (u"standout",
 
213
                 u"default", u"default", u"standout"),
 
214
                (u"bold-underline-blink",
 
215
                 u"default", u"default", (u"bold", u"underline")),
 
216
                (u"bold-standout",
 
217
                 u"default", u"default", (u"bold", u"standout")),
 
218
                (u"underline-blink-standout",
 
219
                 u"default", u"default", (u"underline", u"standout")),
 
220
                (u"bold-underline-blink-standout",
 
221
                 u"default", u"default", (u"bold", u"underline",
 
222
                                          u"standout")),
447
223
                ))
448
 
 
 
224
        
449
225
        if urwid.supports_unicode():
450
 
            self.divider = "─"  # \u2500
 
226
            #self.divider = u"─" # \u2500
 
227
            self.divider = u"━" # \u2501
451
228
        else:
452
 
            self.divider = "_"  # \u005f
453
 
 
 
229
            #self.divider = u"-" # \u002d
 
230
            self.divider = u"_" # \u005f
 
231
        
454
232
        self.screen.start()
455
 
 
 
233
        
456
234
        self.size = self.screen.get_cols_rows()
457
 
 
 
235
        
458
236
        self.clients = urwid.SimpleListWalker([])
459
237
        self.clients_dict = {}
460
 
 
 
238
        
461
239
        # We will add Text widgets to this list
462
 
        self.log = urwid.SimpleListWalker([])
 
240
        self.log = []
463
241
        self.max_log_length = max_log_length
464
 
 
 
242
        
465
243
        # We keep a reference to the log widget so we can remove it
466
244
        # from the ListWalker without it getting destroyed
467
245
        self.logbox = ConstrainedListBox(self.log)
468
 
 
 
246
        
469
247
        # This keeps track of whether self.uilist currently has
470
248
        # self.logbox in it or not
471
249
        self.log_visible = True
472
 
        self.log_wrap = "any"
473
 
 
474
 
        self.loghandler = UILogHandler(self)
475
 
 
 
250
        self.log_wrap = u"any"
 
251
        
476
252
        self.rebuild()
477
 
        self.add_log_line(("bold",
478
 
                           "Mandos Monitor version " + version))
479
 
        self.add_log_line(("bold", "q: Quit  ?: Help"))
480
 
 
481
 
        self.busname = domain + ".Mandos"
482
 
        self.main_loop = GLib.MainLoop()
483
 
 
484
 
    def client_not_found(self, key_id, address):
485
 
        log.info("Client with address %s and key ID %s could"
486
 
                 " not be found", address, key_id)
487
 
 
 
253
        self.log_message((u"bold",
 
254
                          u"Mandos Monitor version " + version))
 
255
        self.log_message((u"bold",
 
256
                          u"q: Quit  ?: Help"))
 
257
        
 
258
        self.busname = domain + '.Mandos'
 
259
        self.main_loop = gobject.MainLoop()
 
260
        self.bus = dbus.SystemBus()
 
261
        mandos_dbus_objc = self.bus.get_object(
 
262
            self.busname, u"/", follow_name_owner_changes=True)
 
263
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
264
                                          dbus_interface
 
265
                                          = server_interface)
 
266
        try:
 
267
            mandos_clients = (self.mandos_serv
 
268
                              .GetAllClientsWithProperties())
 
269
        except dbus.exceptions.DBusException:
 
270
            mandos_clients = dbus.Dictionary()
 
271
        
 
272
        (self.mandos_serv
 
273
         .connect_to_signal("ClientRemoved",
 
274
                            self.find_and_remove_client,
 
275
                            dbus_interface=server_interface,
 
276
                            byte_arrays=True))
 
277
        (self.mandos_serv
 
278
         .connect_to_signal("ClientAdded",
 
279
                            self.add_new_client,
 
280
                            dbus_interface=server_interface,
 
281
                            byte_arrays=True))
 
282
        for path, client in mandos_clients.iteritems():
 
283
            client_proxy_object = self.bus.get_object(self.busname,
 
284
                                                      path)
 
285
            self.add_client(MandosClientWidget(server_proxy_object
 
286
                                               =self.mandos_serv,
 
287
                                               proxy_object
 
288
                                               =client_proxy_object,
 
289
                                               properties=client,
 
290
                                               update_hook
 
291
                                               =self.refresh,
 
292
                                               delete_hook
 
293
                                               =self.remove_client),
 
294
                            path=path)
 
295
    
488
296
    def rebuild(self):
489
297
        """This rebuilds the User Interface.
490
298
        Call this when the widget layout needs to change"""
491
299
        self.uilist = []
492
 
        # self.uilist.append(urwid.ListBox(self.clients))
493
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
494
 
                                                          clients),
495
 
                                       # header=urwid.Divider(),
 
300
        #self.uilist.append(urwid.ListBox(self.clients))
 
301
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
 
302
                                       #header=urwid.Divider(),
496
303
                                       header=None,
497
 
                                       footer=urwid.Divider(
498
 
                                           div_char=self.divider)))
 
304
                                       footer=urwid.Divider(div_char=self.divider)))
499
305
        if self.log_visible:
500
306
            self.uilist.append(self.logbox)
 
307
            pass
501
308
        self.topwidget = urwid.Pile(self.uilist)
502
 
 
503
 
    def add_log_line(self, markup):
 
309
    
 
310
    def log_message(self, markup):
 
311
        """Add a log message to the log buffer."""
504
312
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
505
 
        if self.max_log_length:
506
 
            if len(self.log) > self.max_log_length:
507
 
                del self.log[0:(len(self.log) - self.max_log_length)]
508
 
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
509
 
                              coming_from="above")
510
 
        self.refresh()
511
 
 
 
313
        if (self.max_log_length
 
314
            and len(self.log) > self.max_log_length):
 
315
            del self.log[0:len(self.log)-self.max_log_length-1]
 
316
    
512
317
    def toggle_log_display(self):
513
318
        """Toggle visibility of the log buffer."""
514
319
        self.log_visible = not self.log_visible
515
320
        self.rebuild()
516
 
        log.debug("Log visibility changed to: %s", self.log_visible)
517
 
 
 
321
        self.log_message(u"Log visibility changed to: "
 
322
                         + unicode(self.log_visible))
 
323
    
518
324
    def change_log_display(self):
519
325
        """Change type of log display.
520
326
        Currently, this toggles wrapping of text lines."""
521
 
        if self.log_wrap == "clip":
522
 
            self.log_wrap = "any"
 
327
        if self.log_wrap == u"clip":
 
328
            self.log_wrap = u"any"
523
329
        else:
524
 
            self.log_wrap = "clip"
 
330
            self.log_wrap = u"clip"
525
331
        for textwidget in self.log:
526
332
            textwidget.set_wrap_mode(self.log_wrap)
527
 
        log.debug("Wrap mode: %s", self.log_wrap)
528
 
 
529
 
    def find_and_remove_client(self, path, interfaces):
530
 
        """Find a client by its object path and remove it.
531
 
 
532
 
        This is connected to the InterfacesRemoved signal from the
 
333
        self.log_message(u"Wrap mode: " + self.log_wrap)
 
334
    
 
335
    def find_and_remove_client(self, path, name):
 
336
        """Find an client from its object path and remove it.
 
337
        
 
338
        This is connected to the ClientRemoved signal from the
533
339
        Mandos server object."""
534
 
        if client_interface not in interfaces:
535
 
            # Not a Mandos client object; ignore
536
 
            return
537
340
        try:
538
341
            client = self.clients_dict[path]
539
342
        except KeyError:
540
343
            # not found?
541
 
            log.warning("Unknown client %s removed", path)
542
 
            return
543
 
        client.delete()
544
 
 
545
 
    def add_new_client(self, path, ifs_and_props):
546
 
        """Find a client by its object path and remove it.
547
 
 
548
 
        This is connected to the InterfacesAdded signal from the
549
 
        Mandos server object.
550
 
        """
551
 
        if client_interface not in ifs_and_props:
552
 
            # Not a Mandos client object; ignore
553
 
            return
 
344
            return
 
345
        self.remove_client(client, path)
 
346
    
 
347
    def add_new_client(self, path, properties):
554
348
        client_proxy_object = self.bus.get_object(self.busname, path)
555
 
        self.add_client(MandosClientWidget(
556
 
            server_proxy_object=self.mandos_serv,
557
 
            proxy_object=client_proxy_object,
558
 
            update_hook=self.refresh,
559
 
            delete_hook=self.remove_client,
560
 
            properties=dict(ifs_and_props[client_interface])),
 
349
        self.add_client(MandosClientWidget(server_proxy_object
 
350
                                           =self.mandos_serv,
 
351
                                           proxy_object
 
352
                                           =client_proxy_object,
 
353
                                           properties=properties,
 
354
                                           update_hook
 
355
                                           =self.refresh,
 
356
                                           delete_hook
 
357
                                           =self.remove_client),
561
358
                        path=path)
562
 
 
 
359
    
563
360
    def add_client(self, client, path=None):
564
361
        self.clients.append(client)
565
362
        if path is None:
566
363
            path = client.proxy.object_path
567
364
        self.clients_dict[path] = client
568
 
        self.clients.sort(key=lambda c: c.properties["Name"])
 
365
        self.clients.sort(None, lambda c: c.properties[u"name"])
569
366
        self.refresh()
570
 
 
 
367
    
571
368
    def remove_client(self, client, path=None):
572
369
        self.clients.remove(client)
573
370
        if path is None:
574
371
            path = client.proxy.object_path
575
372
        del self.clients_dict[path]
 
373
        if not self.clients_dict:
 
374
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
375
            # is completely emptied, we need to recreate it.
 
376
            self.clients = urwid.SimpleListWalker([])
 
377
            self.rebuild()
576
378
        self.refresh()
577
 
 
 
379
    
578
380
    def refresh(self):
579
381
        """Redraw the screen"""
580
382
        canvas = self.topwidget.render(self.size, focus=True)
581
383
        self.screen.draw_screen(self.size, canvas)
582
 
 
 
384
    
583
385
    def run(self):
584
386
        """Start the main loop and exit when it's done."""
585
 
        log.addHandler(self.loghandler)
586
 
        self.orig_log_propagate = log.propagate
587
 
        log.propagate = False
588
 
        self.orig_log_level = log.level
589
 
        log.setLevel("INFO")
590
 
        self.bus = dbus.SystemBus()
591
 
        mandos_dbus_objc = self.bus.get_object(
592
 
            self.busname, "/", follow_name_owner_changes=True)
593
 
        self.mandos_serv = dbus.Interface(
594
 
            mandos_dbus_objc, dbus_interface=server_interface)
595
 
        try:
596
 
            mandos_clients = (self.mandos_serv
597
 
                              .GetAllClientsWithProperties())
598
 
            if not mandos_clients:
599
 
                log.warning("Note: Server has no clients.")
600
 
        except dbus.exceptions.DBusException:
601
 
            log.warning("Note: No Mandos server running.")
602
 
            mandos_clients = dbus.Dictionary()
603
 
 
604
 
        (self.mandos_serv
605
 
         .connect_to_signal("InterfacesRemoved",
606
 
                            self.find_and_remove_client,
607
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
608
 
                            byte_arrays=True))
609
 
        (self.mandos_serv
610
 
         .connect_to_signal("InterfacesAdded",
611
 
                            self.add_new_client,
612
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
613
 
                            byte_arrays=True))
614
 
        (self.mandos_serv
615
 
         .connect_to_signal("ClientNotFound",
616
 
                            self.client_not_found,
617
 
                            dbus_interface=server_interface,
618
 
                            byte_arrays=True))
619
 
        for path, client in mandos_clients.items():
620
 
            client_proxy_object = self.bus.get_object(self.busname,
621
 
                                                      path)
622
 
            self.add_client(MandosClientWidget(
623
 
                server_proxy_object=self.mandos_serv,
624
 
                proxy_object=client_proxy_object,
625
 
                properties=client,
626
 
                update_hook=self.refresh,
627
 
                delete_hook=self.remove_client),
628
 
                            path=path)
629
 
 
630
387
        self.refresh()
631
 
        self._input_callback_tag = (
632
 
            GLib.io_add_watch(
633
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
634
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
635
 
                glib_safely(self.process_input)))
 
388
        self._input_callback_tag = (gobject.io_add_watch
 
389
                                    (sys.stdin.fileno(),
 
390
                                     gobject.IO_IN,
 
391
                                     self.process_input))
636
392
        self.main_loop.run()
637
393
        # Main loop has finished, we should close everything now
638
 
        GLib.source_remove(self._input_callback_tag)
639
 
        with warnings.catch_warnings():
640
 
            warnings.simplefilter("ignore", BytesWarning)
641
 
            self.screen.stop()
642
 
 
 
394
        gobject.source_remove(self._input_callback_tag)
 
395
        self.screen.stop()
 
396
    
643
397
    def stop(self):
644
398
        self.main_loop.quit()
645
 
        log.removeHandler(self.loghandler)
646
 
        log.propagate = self.orig_log_propagate
647
 
 
 
399
    
648
400
    def process_input(self, source, condition):
649
401
        keys = self.screen.get_input()
650
 
        translations = {"ctrl n": "down",       # Emacs
651
 
                        "ctrl p": "up",         # Emacs
652
 
                        "ctrl v": "page down",  # Emacs
653
 
                        "meta v": "page up",    # Emacs
654
 
                        " ": "page down",       # less
655
 
                        "f": "page down",       # less
656
 
                        "b": "page up",         # less
657
 
                        "j": "down",            # vi
658
 
                        "k": "up",              # vi
659
 
                        }
 
402
        translations = { u"ctrl n": u"down",      # Emacs
 
403
                         u"ctrl p": u"up",        # Emacs
 
404
                         u"ctrl v": u"page down", # Emacs
 
405
                         u"meta v": u"page up",   # Emacs
 
406
                         u" ": u"page down",      # less
 
407
                         u"f": u"page down",      # less
 
408
                         u"b": u"page up",        # less
 
409
                         u"j": u"down",           # vi
 
410
                         u"k": u"up",             # vi
 
411
                         }
660
412
        for key in keys:
661
413
            try:
662
414
                key = translations[key]
663
415
            except KeyError:    # :-)
664
416
                pass
665
 
 
666
 
            if key == "q" or key == "Q":
 
417
            
 
418
            if key == u"q" or key == u"Q":
667
419
                self.stop()
668
420
                break
669
 
            elif key == "window resize":
 
421
            elif key == u"window resize":
670
422
                self.size = self.screen.get_cols_rows()
671
423
                self.refresh()
672
 
            elif key == "ctrl l":
673
 
                self.screen.clear()
 
424
            elif key == u"\f":  # Ctrl-L
674
425
                self.refresh()
675
 
            elif key == "l" or key == "D":
 
426
            elif key == u"l" or key == u"D":
676
427
                self.toggle_log_display()
677
428
                self.refresh()
678
 
            elif key == "w" or key == "i":
 
429
            elif key == u"w" or key == u"i":
679
430
                self.change_log_display()
680
431
                self.refresh()
681
 
            elif key == "?" or key == "f1" or key == "esc":
 
432
            elif key == u"?" or key == u"f1":
682
433
                if not self.log_visible:
683
434
                    self.log_visible = True
684
435
                    self.rebuild()
685
 
                self.add_log_line(("bold",
686
 
                                   "  ".join(("q: Quit",
687
 
                                              "?: Help",
688
 
                                              "l: Log window toggle",
689
 
                                              "TAB: Switch window",
690
 
                                              "w: Wrap (log lines)",
691
 
                                              "v: Toggle verbose log",
692
 
                                   ))))
693
 
                self.add_log_line(("bold",
694
 
                                   "  ".join(("Clients:",
695
 
                                              "+: Enable",
696
 
                                              "-: Disable",
697
 
                                              "R: Remove",
698
 
                                              "s: Start new checker",
699
 
                                              "S: Stop checker",
700
 
                                              "C: Checker OK",
701
 
                                              "a: Approve",
702
 
                                              "d: Deny",
703
 
                                   ))))
 
436
                self.log_message((u"bold",
 
437
                                  u"  ".join((u"q: Quit",
 
438
                                              u"?: Help",
 
439
                                              u"l: Log window toggle",
 
440
                                              u"TAB: Switch window",
 
441
                                              u"w: Wrap (log)"))))
 
442
                self.log_message((u"bold",
 
443
                                  u"  ".join((u"Clients:",
 
444
                                              u"e: Enable",
 
445
                                              u"d: Disable",
 
446
                                              u"r: Remove",
 
447
                                              u"s: Start new checker",
 
448
                                              u"S: Stop checker",
 
449
                                              u"C: Checker OK"))))
704
450
                self.refresh()
705
 
            elif key == "tab":
 
451
            elif key == u"tab":
706
452
                if self.topwidget.get_focus() is self.logbox:
707
453
                    self.topwidget.set_focus(0)
708
454
                else:
709
455
                    self.topwidget.set_focus(self.logbox)
710
456
                self.refresh()
711
 
            elif key == "v":
712
 
                if log.level < logging.INFO:
713
 
                    log.setLevel(logging.INFO)
714
 
                    log.info("Verbose mode: Off")
715
 
                else:
716
 
                    log.setLevel(logging.NOTSET)
717
 
                    log.info("Verbose mode: On")
718
 
            # elif (key == "end" or key == "meta >" or key == "G"
719
 
            #       or key == ">"):
720
 
            #     pass            # xxx end-of-buffer
721
 
            # elif (key == "home" or key == "meta <" or key == "g"
722
 
            #       or key == "<"):
723
 
            #     pass            # xxx beginning-of-buffer
724
 
            # elif key == "ctrl e" or key == "$":
725
 
            #     pass            # xxx move-end-of-line
726
 
            # elif key == "ctrl a" or key == "^":
727
 
            #     pass            # xxx move-beginning-of-line
728
 
            # elif key == "ctrl b" or key == "meta (" or key == "h":
729
 
            #     pass            # xxx left
730
 
            # elif key == "ctrl f" or key == "meta )" or key == "l":
731
 
            #     pass            # xxx right
732
 
            # elif key == "a":
733
 
            #     pass            # scroll up log
734
 
            # elif key == "z":
735
 
            #     pass            # scroll down log
 
457
            #elif (key == u"end" or key == u"meta >" or key == u"G"
 
458
            #      or key == u">"):
 
459
            #    pass            # xxx end-of-buffer
 
460
            #elif (key == u"home" or key == u"meta <" or key == u"g"
 
461
            #      or key == u"<"):
 
462
            #    pass            # xxx beginning-of-buffer
 
463
            #elif key == u"ctrl e" or key == u"$":
 
464
            #    pass            # xxx move-end-of-line
 
465
            #elif key == u"ctrl a" or key == u"^":
 
466
            #    pass            # xxx move-beginning-of-line
 
467
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
 
468
            #    pass            # xxx left
 
469
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
 
470
            #    pass            # xxx right
 
471
            #elif key == u"a":
 
472
            #    pass            # scroll up log
 
473
            #elif key == u"z":
 
474
            #    pass            # scroll down log
736
475
            elif self.topwidget.selectable():
737
476
                self.topwidget.keypress(self.size, key)
738
477
                self.refresh()
739
478
        return True
740
479
 
741
 
 
742
 
class UILogHandler(logging.Handler):
743
 
    def __init__(self, ui, *args, **kwargs):
744
 
        self.ui = ui
745
 
        super(UILogHandler, self).__init__(*args, **kwargs)
746
 
        self.setFormatter(
747
 
            logging.Formatter("%(asctime)s: %(message)s"))
748
 
    def emit(self, record):
749
 
        msg = self.format(record)
750
 
        if record.levelno > logging.INFO:
751
 
            msg = ("bold", msg)
752
 
        self.ui.add_log_line(msg)
753
 
 
754
 
 
755
480
ui = UserInterface()
756
481
try:
757
482
    ui.run()
758
 
except KeyboardInterrupt:
759
 
    with warnings.catch_warnings():
760
 
        warnings.filterwarnings("ignore", "", BytesWarning)
761
 
        ui.screen.stop()
762
 
except Exception:
763
 
    with warnings.catch_warnings():
764
 
        warnings.filterwarnings("ignore", "", BytesWarning)
765
 
        ui.screen.stop()
 
483
except:
 
484
    ui.screen.stop()
766
485
    raise