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  • Committer: Teddy Hogeborn
  • Date: 2014-08-09 13:18:46 UTC
  • mto: (237.7.304 trunk)
  • mto: This revision was merged to the branch mainline in revision 323.
  • Revision ID: teddy@recompile.se-20140809131846-2emd272mf9c9wihe
mandos: Replace unicode() with str().

This is in preparation for the coming Python 3 conversion.

* mandos: Replace "str" with "unicode".  All callers changed.

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Lines of Context:
mandos-monitor
 
1
#!/usr/bin/python
 
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
# 
 
25
 
 
26
from __future__ import (division, absolute_import, print_function,
 
27
                        unicode_literals)
 
28
try:
 
29
    from future_builtins import *
 
30
except ImportError:
 
31
    pass
 
32
 
 
33
import sys
 
34
import os
 
35
 
 
36
import datetime
 
37
 
 
38
import urwid.curses_display
 
39
import urwid
 
40
 
 
41
from dbus.mainloop.glib import DBusGMainLoop
 
42
try:
 
43
    import gobject
 
44
except ImportError:
 
45
    from gi.repository import GObject as gobject
 
46
 
 
47
import dbus
 
48
 
 
49
import locale
 
50
 
 
51
if sys.version_info.major == 2:
 
52
    str = unicode
 
53
 
 
54
locale.setlocale(locale.LC_ALL, '')
 
55
 
 
56
import logging
 
57
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
 
58
 
 
59
# Some useful constants
 
60
domain = 'se.recompile'
 
61
server_interface = domain + '.Mandos'
 
62
client_interface = domain + '.Mandos.Client'
 
63
version = "1.6.8"
 
64
 
 
65
def isoformat_to_datetime(iso):
 
66
    "Parse an ISO 8601 date string to a datetime.datetime()"
 
67
    if not iso:
 
68
        return None
 
69
    d, t = iso.split("T", 1)
 
70
    year, month, day = d.split("-", 2)
 
71
    hour, minute, second = t.split(":", 2)
 
72
    second, fraction = divmod(float(second), 1)
 
73
    return datetime.datetime(int(year),
 
74
                             int(month),
 
75
                             int(day),
 
76
                             int(hour),
 
77
                             int(minute),
 
78
                             int(second),           # Whole seconds
 
79
                             int(fraction*1000000)) # Microseconds
 
80
 
 
81
class MandosClientPropertyCache(object):
 
82
    """This wraps a Mandos Client D-Bus proxy object, caches the
 
83
    properties and calls a hook function when any of them are
 
84
    changed.
 
85
    """
 
86
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
87
        self.proxy = proxy_object # Mandos Client proxy object
 
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)
 
106
    
 
107
    def property_changed(self, property=None, value=None):
 
108
        """This is called whenever we get a PropertyChanged signal
 
109
        It updates the changed property in the "properties" dict.
 
110
        """
 
111
        # Update properties dict with new value
 
112
        self.properties[property] = value
 
113
    
 
114
    def delete(self):
 
115
        self.property_changed_match.remove()
 
116
 
 
117
 
 
118
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
 
119
    """A Mandos Client which is visible on the screen.
 
120
    """
 
121
    
 
122
    def __init__(self, server_proxy_object=None, update_hook=None,
 
123
                 delete_hook=None, logger=None, **kwargs):
 
124
        # Called on update
 
125
        self.update_hook = update_hook
 
126
        # Called on delete
 
127
        self.delete_hook = delete_hook
 
128
        # Mandos Server proxy object
 
129
        self.server_proxy_object = server_proxy_object
 
130
        # Logger
 
131
        self.logger = logger
 
132
        
 
133
        self._update_timer_callback_tag = None
 
134
        
 
135
        # The widget shown normally
 
136
        self._text_widget = urwid.Text("")
 
137
        # The widget shown when we have focus
 
138
        self._focus_text_widget = urwid.Text("")
 
139
        super(MandosClientWidget, self).__init__(**kwargs)
 
140
        self.update()
 
141
        self.opened = False
 
142
        
 
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 {}'
 
165
                    .format(self.properties["Name"]), level=0)
 
166
    
 
167
    def using_timer(self, flag):
 
168
        """Call this method with True or False when timer should be
 
169
        activated or deactivated.
 
170
        """
 
171
        if flag and self._update_timer_callback_tag is None:
 
172
            # Will update the shown timer value every second
 
173
            self._update_timer_callback_tag = (gobject.timeout_add
 
174
                                               (1000,
 
175
                                                self.update_timer))
 
176
        elif not (flag or self._update_timer_callback_tag is None):
 
177
            gobject.source_remove(self._update_timer_callback_tag)
 
178
            self._update_timer_callback_tag = None
 
179
    
 
180
    def checker_completed(self, exitstatus, condition, command):
 
181
        if exitstatus == 0:
 
182
            self.logger('Checker for client {} (command "{}")'
 
183
                        ' succeeded'.format(self.properties["Name"],
 
184
                                            command), level=0)
 
185
            self.update()
 
186
            return
 
187
        # Checker failed
 
188
        if os.WIFEXITED(condition):
 
189
            self.logger('Checker for client {} (command "{}") failed'
 
190
                        ' with exit code {}'
 
191
                        .format(self.properties["Name"], command,
 
192
                                os.WEXITSTATUS(condition)))
 
193
        elif os.WIFSIGNALED(condition):
 
194
            self.logger('Checker for client {} (command "{}") was'
 
195
                        ' killed by signal {}'
 
196
                        .format(self.properties["Name"], command,
 
197
                                os.WTERMSIG(condition)))
 
198
        elif os.WCOREDUMP(condition):
 
199
            self.logger('Checker for client {} (command "{}") dumped'
 
200
                        ' core'.format(self.properties["Name"],
 
201
                                       command))
 
202
        else:
 
203
            self.logger('Checker for client {} completed'
 
204
                        ' mysteriously'
 
205
                        .format(self.properties["Name"]))
 
206
        self.update()
 
207
    
 
208
    def checker_started(self, command):
 
209
        """Server signals that a checker started."""
 
210
        self.logger('Client {} started checker "{}"'
 
211
                    .format(self.properties["Name"],
 
212
                            command), level=0)
 
213
    
 
214
    def got_secret(self):
 
215
        self.logger('Client {} received its secret'
 
216
                    .format(self.properties["Name"]))
 
217
    
 
218
    def need_approval(self, timeout, default):
 
219
        if not default:
 
220
            message = 'Client {} needs approval within {} seconds'
 
221
        else:
 
222
            message = 'Client {} will get its secret in {} seconds'
 
223
        self.logger(message.format(self.properties["Name"],
 
224
                                   timeout/1000))
 
225
    
 
226
    def rejected(self, reason):
 
227
        self.logger('Client {} was rejected; reason: {}'
 
228
                    .format(self.properties["Name"], reason))
 
229
    
 
230
    def selectable(self):
 
231
        """Make this a "selectable" widget.
 
232
        This overrides the method from urwid.FlowWidget."""
 
233
        return True
 
234
    
 
235
    def rows(self, maxcolrow, focus=False):
 
236
        """How many rows this widget will occupy might depend on
 
237
        whether we have focus or not.
 
238
        This overrides the method from urwid.FlowWidget"""
 
239
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
240
    
 
241
    def current_widget(self, focus=False):
 
242
        if focus or self.opened:
 
243
            return self._focus_widget
 
244
        return self._widget
 
245
    
 
246
    def update(self):
 
247
        "Called when what is visible on the screen should be updated."
 
248
        # How to add standout mode to a style
 
249
        with_standout = { "normal": "standout",
 
250
                          "bold": "bold-standout",
 
251
                          "underline-blink":
 
252
                              "underline-blink-standout",
 
253
                          "bold-underline-blink":
 
254
                              "bold-underline-blink-standout",
 
255
                          }
 
256
        
 
257
        # Rebuild focus and non-focus widgets using current properties
 
258
        
 
259
        # Base part of a client. Name!
 
260
        base = '{name}: '.format(name=self.properties["Name"])
 
261
        if not self.properties["Enabled"]:
 
262
            message = "DISABLED"
 
263
            self.using_timer(False)
 
264
        elif self.properties["ApprovalPending"]:
 
265
            timeout = datetime.timedelta(milliseconds
 
266
                                         = self.properties
 
267
                                         ["ApprovalDelay"])
 
268
            last_approval_request = isoformat_to_datetime(
 
269
                self.properties["LastApprovalRequest"])
 
270
            if last_approval_request is not None:
 
271
                timer = max(timeout - (datetime.datetime.utcnow()
 
272
                                       - last_approval_request),
 
273
                            datetime.timedelta())
 
274
            else:
 
275
                timer = datetime.timedelta()
 
276
            if self.properties["ApprovedByDefault"]:
 
277
                message = "Approval in {}. (d)eny?"
 
278
            else:
 
279
                message = "Denial in {}. (a)pprove?"
 
280
            message = message.format(str(timer).rsplit(".", 1)[0])
 
281
            self.using_timer(True)
 
282
        elif self.properties["LastCheckerStatus"] != 0:
 
283
            # When checker has failed, show timer until client expires
 
284
            expires = self.properties["Expires"]
 
285
            if expires == "":
 
286
                timer = datetime.timedelta(0)
 
287
            else:
 
288
                expires = (datetime.datetime.strptime
 
289
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
290
                timer = max(expires - datetime.datetime.utcnow(),
 
291
                            datetime.timedelta())
 
292
            message = ('A checker has failed! Time until client'
 
293
                       ' gets disabled: {}'
 
294
                       .format(str(timer).rsplit(".", 1)[0]))
 
295
            self.using_timer(True)
 
296
        else:
 
297
            message = "enabled"
 
298
            self.using_timer(False)
 
299
        self._text = "{}{}".format(base, message)
 
300
        
 
301
        if not urwid.supports_unicode():
 
302
            self._text = self._text.encode("ascii", "replace")
 
303
        textlist = [("normal", self._text)]
 
304
        self._text_widget.set_text(textlist)
 
305
        self._focus_text_widget.set_text([(with_standout[text[0]],
 
306
                                           text[1])
 
307
                                          if isinstance(text, tuple)
 
308
                                          else text
 
309
                                          for text in textlist])
 
310
        self._widget = self._text_widget
 
311
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
 
312
                                            "standout")
 
313
        # Run update hook, if any
 
314
        if self.update_hook is not None:
 
315
            self.update_hook()
 
316
    
 
317
    def update_timer(self):
 
318
        """called by gobject. Will indefinitely loop until
 
319
        gobject.source_remove() on tag is called"""
 
320
        self.update()
 
321
        return True             # Keep calling this
 
322
    
 
323
    def delete(self, **kwargs):
 
324
        if self._update_timer_callback_tag is not None:
 
325
            gobject.source_remove(self._update_timer_callback_tag)
 
326
            self._update_timer_callback_tag = None
 
327
        for match in self.match_objects:
 
328
            match.remove()
 
329
        self.match_objects = ()
 
330
        if self.delete_hook is not None:
 
331
            self.delete_hook(self)
 
332
        return super(MandosClientWidget, self).delete(**kwargs)
 
333
    
 
334
    def render(self, maxcolrow, focus=False):
 
335
        """Render differently if we have focus.
 
336
        This overrides the method from urwid.FlowWidget"""
 
337
        return self.current_widget(focus).render(maxcolrow,
 
338
                                                 focus=focus)
 
339
    
 
340
    def keypress(self, maxcolrow, key):
 
341
        """Handle keys.
 
342
        This overrides the method from urwid.FlowWidget"""
 
343
        if key == "+":
 
344
            self.proxy.Enable(dbus_interface = client_interface,
 
345
                              ignore_reply=True)
 
346
        elif key == "-":
 
347
            self.proxy.Disable(dbus_interface = client_interface,
 
348
                               ignore_reply=True)
 
349
        elif key == "a":
 
350
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
 
351
                               dbus_interface = client_interface,
 
352
                               ignore_reply=True)
 
353
        elif key == "d":
 
354
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
 
355
                                  dbus_interface = client_interface,
 
356
                               ignore_reply=True)
 
357
        elif key == "R" or key == "_" or key == "ctrl k":
 
358
            self.server_proxy_object.RemoveClient(self.proxy
 
359
                                                  .object_path,
 
360
                                                  ignore_reply=True)
 
361
        elif key == "s":
 
362
            self.proxy.StartChecker(dbus_interface = client_interface,
 
363
                                    ignore_reply=True)
 
364
        elif key == "S":
 
365
            self.proxy.StopChecker(dbus_interface = client_interface,
 
366
                                   ignore_reply=True)
 
367
        elif key == "C":
 
368
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
369
                                 ignore_reply=True)
 
370
        # xxx
 
371
#         elif key == "p" or key == "=":
 
372
#             self.proxy.pause()
 
373
#         elif key == "u" or key == ":":
 
374
#             self.proxy.unpause()
 
375
#         elif key == "RET":
 
376
#             self.open()
 
377
        else:
 
378
            return key
 
379
    
 
380
    def property_changed(self, property=None, **kwargs):
 
381
        """Call self.update() if old value is not new value.
 
382
        This overrides the method from MandosClientPropertyCache"""
 
383
        property_name = str(property)
 
384
        old_value = self.properties.get(property_name)
 
385
        super(MandosClientWidget, self).property_changed(
 
386
            property=property, **kwargs)
 
387
        if self.properties.get(property_name) != old_value:
 
388
            self.update()
 
389
 
 
390
 
 
391
class ConstrainedListBox(urwid.ListBox):
 
392
    """Like a normal urwid.ListBox, but will consume all "up" or
 
393
    "down" key presses, thus not allowing any containing widgets to
 
394
    use them as an excuse to shift focus away from this widget.
 
395
    """
 
396
    def keypress(self, *args, **kwargs):
 
397
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
398
        if ret in ("up", "down"):
 
399
            return
 
400
        return ret
 
401
 
 
402
 
 
403
class UserInterface(object):
 
404
    """This is the entire user interface - the whole screen
 
405
    with boxes, lists of client widgets, etc.
 
406
    """
 
407
    def __init__(self, max_log_length=1000, log_level=1):
 
408
        DBusGMainLoop(set_as_default=True)
 
409
        
 
410
        self.screen = urwid.curses_display.Screen()
 
411
        
 
412
        self.screen.register_palette((
 
413
                ("normal",
 
414
                 "default", "default", None),
 
415
                ("bold",
 
416
                 "bold", "default", "bold"),
 
417
                ("underline-blink",
 
418
                 "underline,blink", "default", "underline,blink"),
 
419
                ("standout",
 
420
                 "standout", "default", "standout"),
 
421
                ("bold-underline-blink",
 
422
                 "bold,underline,blink", "default", "bold,underline,blink"),
 
423
                ("bold-standout",
 
424
                 "bold,standout", "default", "bold,standout"),
 
425
                ("underline-blink-standout",
 
426
                 "underline,blink,standout", "default",
 
427
                 "underline,blink,standout"),
 
428
                ("bold-underline-blink-standout",
 
429
                 "bold,underline,blink,standout", "default",
 
430
                 "bold,underline,blink,standout"),
 
431
                ))
 
432
        
 
433
        if urwid.supports_unicode():
 
434
            self.divider = "─" # \u2500
 
435
            #self.divider = "━" # \u2501
 
436
        else:
 
437
            #self.divider = "-" # \u002d
 
438
            self.divider = "_" # \u005f
 
439
        
 
440
        self.screen.start()
 
441
        
 
442
        self.size = self.screen.get_cols_rows()
 
443
        
 
444
        self.clients = urwid.SimpleListWalker([])
 
445
        self.clients_dict = {}
 
446
        
 
447
        # We will add Text widgets to this list
 
448
        self.log = []
 
449
        self.max_log_length = max_log_length
 
450
        
 
451
        self.log_level = log_level
 
452
        
 
453
        # We keep a reference to the log widget so we can remove it
 
454
        # from the ListWalker without it getting destroyed
 
455
        self.logbox = ConstrainedListBox(self.log)
 
456
        
 
457
        # This keeps track of whether self.uilist currently has
 
458
        # self.logbox in it or not
 
459
        self.log_visible = True
 
460
        self.log_wrap = "any"
 
461
        
 
462
        self.rebuild()
 
463
        self.log_message_raw(("bold",
 
464
                              "Mandos Monitor version " + version))
 
465
        self.log_message_raw(("bold",
 
466
                              "q: Quit  ?: Help"))
 
467
        
 
468
        self.busname = domain + '.Mandos'
 
469
        self.main_loop = gobject.MainLoop()
 
470
    
 
471
    def client_not_found(self, fingerprint, address):
 
472
        self.log_message("Client with address {} and fingerprint {}"
 
473
                         " could not be found"
 
474
                         .format(address, fingerprint))
 
475
    
 
476
    def rebuild(self):
 
477
        """This rebuilds the User Interface.
 
478
        Call this when the widget layout needs to change"""
 
479
        self.uilist = []
 
480
        #self.uilist.append(urwid.ListBox(self.clients))
 
481
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
482
                                                          clients),
 
483
                                       #header=urwid.Divider(),
 
484
                                       header=None,
 
485
                                       footer=
 
486
                                       urwid.Divider(div_char=
 
487
                                                     self.divider)))
 
488
        if self.log_visible:
 
489
            self.uilist.append(self.logbox)
 
490
        self.topwidget = urwid.Pile(self.uilist)
 
491
    
 
492
    def log_message(self, message, level=1):
 
493
        """Log message formatted with timestamp"""
 
494
        if level < self.log_level:
 
495
            return
 
496
        timestamp = datetime.datetime.now().isoformat()
 
497
        self.log_message_raw("{}: {}".format(timestamp, message),
 
498
                             level=level)
 
499
    
 
500
    def log_message_raw(self, markup, level=1):
 
501
        """Add a log message to the log buffer."""
 
502
        if level < self.log_level:
 
503
            return
 
504
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
 
505
        if (self.max_log_length
 
506
            and len(self.log) > self.max_log_length):
 
507
            del self.log[0:len(self.log)-self.max_log_length-1]
 
508
        self.logbox.set_focus(len(self.logbox.body.contents),
 
509
                              coming_from="above")
 
510
        self.refresh()
 
511
    
 
512
    def toggle_log_display(self):
 
513
        """Toggle visibility of the log buffer."""
 
514
        self.log_visible = not self.log_visible
 
515
        self.rebuild()
 
516
        self.log_message("Log visibility changed to: {}"
 
517
                         .format(self.log_visible), level=0)
 
518
    
 
519
    def change_log_display(self):
 
520
        """Change type of log display.
 
521
        Currently, this toggles wrapping of text lines."""
 
522
        if self.log_wrap == "clip":
 
523
            self.log_wrap = "any"
 
524
        else:
 
525
            self.log_wrap = "clip"
 
526
        for textwidget in self.log:
 
527
            textwidget.set_wrap_mode(self.log_wrap)
 
528
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
529
                         level=0)
 
530
    
 
531
    def find_and_remove_client(self, path, name):
 
532
        """Find a client by its object path and remove it.
 
533
        
 
534
        This is connected to the ClientRemoved signal from the
 
535
        Mandos server object."""
 
536
        try:
 
537
            client = self.clients_dict[path]
 
538
        except KeyError:
 
539
            # not found?
 
540
            self.log_message("Unknown client {!r} ({!r}) removed"
 
541
                             .format(name, path))
 
542
            return
 
543
        client.delete()
 
544
    
 
545
    def add_new_client(self, path):
 
546
        client_proxy_object = self.bus.get_object(self.busname, path)
 
547
        self.add_client(MandosClientWidget(server_proxy_object
 
548
                                           =self.mandos_serv,
 
549
                                           proxy_object
 
550
                                           =client_proxy_object,
 
551
                                           update_hook
 
552
                                           =self.refresh,
 
553
                                           delete_hook
 
554
                                           =self.remove_client,
 
555
                                           logger
 
556
                                           =self.log_message),
 
557
                        path=path)
 
558
    
 
559
    def add_client(self, client, path=None):
 
560
        self.clients.append(client)
 
561
        if path is None:
 
562
            path = client.proxy.object_path
 
563
        self.clients_dict[path] = client
 
564
        self.clients.sort(key=lambda c: c.properties["Name"])
 
565
        self.refresh()
 
566
    
 
567
    def remove_client(self, client, path=None):
 
568
        self.clients.remove(client)
 
569
        if path is None:
 
570
            path = client.proxy.object_path
 
571
        del self.clients_dict[path]
 
572
        self.refresh()
 
573
    
 
574
    def refresh(self):
 
575
        """Redraw the screen"""
 
576
        canvas = self.topwidget.render(self.size, focus=True)
 
577
        self.screen.draw_screen(self.size, canvas)
 
578
    
 
579
    def run(self):
 
580
        """Start the main loop and exit when it's done."""
 
581
        self.bus = dbus.SystemBus()
 
582
        mandos_dbus_objc = self.bus.get_object(
 
583
            self.busname, "/", follow_name_owner_changes=True)
 
584
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
585
                                          dbus_interface
 
586
                                          = server_interface)
 
587
        try:
 
588
            mandos_clients = (self.mandos_serv
 
589
                              .GetAllClientsWithProperties())
 
590
            if not mandos_clients:
 
591
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
592
        except dbus.exceptions.DBusException:
 
593
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
594
            mandos_clients = dbus.Dictionary()
 
595
        
 
596
        (self.mandos_serv
 
597
         .connect_to_signal("ClientRemoved",
 
598
                            self.find_and_remove_client,
 
599
                            dbus_interface=server_interface,
 
600
                            byte_arrays=True))
 
601
        (self.mandos_serv
 
602
         .connect_to_signal("ClientAdded",
 
603
                            self.add_new_client,
 
604
                            dbus_interface=server_interface,
 
605
                            byte_arrays=True))
 
606
        (self.mandos_serv
 
607
         .connect_to_signal("ClientNotFound",
 
608
                            self.client_not_found,
 
609
                            dbus_interface=server_interface,
 
610
                            byte_arrays=True))
 
611
        for path, client in mandos_clients.items():
 
612
            client_proxy_object = self.bus.get_object(self.busname,
 
613
                                                      path)
 
614
            self.add_client(MandosClientWidget(server_proxy_object
 
615
                                               =self.mandos_serv,
 
616
                                               proxy_object
 
617
                                               =client_proxy_object,
 
618
                                               properties=client,
 
619
                                               update_hook
 
620
                                               =self.refresh,
 
621
                                               delete_hook
 
622
                                               =self.remove_client,
 
623
                                               logger
 
624
                                               =self.log_message),
 
625
                            path=path)
 
626
        
 
627
        self.refresh()
 
628
        self._input_callback_tag = (gobject.io_add_watch
 
629
                                    (sys.stdin.fileno(),
 
630
                                     gobject.IO_IN,
 
631
                                     self.process_input))
 
632
        self.main_loop.run()
 
633
        # Main loop has finished, we should close everything now
 
634
        gobject.source_remove(self._input_callback_tag)
 
635
        self.screen.stop()
 
636
    
 
637
    def stop(self):
 
638
        self.main_loop.quit()
 
639
    
 
640
    def process_input(self, source, condition):
 
641
        keys = self.screen.get_input()
 
642
        translations = { "ctrl n": "down",      # Emacs
 
643
                         "ctrl p": "up",        # Emacs
 
644
                         "ctrl v": "page down", # Emacs
 
645
                         "meta v": "page up",   # Emacs
 
646
                         " ": "page down",      # less
 
647
                         "f": "page down",      # less
 
648
                         "b": "page up",        # less
 
649
                         "j": "down",           # vi
 
650
                         "k": "up",             # vi
 
651
                         }
 
652
        for key in keys:
 
653
            try:
 
654
                key = translations[key]
 
655
            except KeyError:    # :-)
 
656
                pass
 
657
            
 
658
            if key == "q" or key == "Q":
 
659
                self.stop()
 
660
                break
 
661
            elif key == "window resize":
 
662
                self.size = self.screen.get_cols_rows()
 
663
                self.refresh()
 
664
            elif key == "ctrl l":
 
665
                self.screen.clear()
 
666
                self.refresh()
 
667
            elif key == "l" or key == "D":
 
668
                self.toggle_log_display()
 
669
                self.refresh()
 
670
            elif key == "w" or key == "i":
 
671
                self.change_log_display()
 
672
                self.refresh()
 
673
            elif key == "?" or key == "f1" or key == "esc":
 
674
                if not self.log_visible:
 
675
                    self.log_visible = True
 
676
                    self.rebuild()
 
677
                self.log_message_raw(("bold",
 
678
                                      "  ".
 
679
                                      join(("q: Quit",
 
680
                                            "?: Help",
 
681
                                            "l: Log window toggle",
 
682
                                            "TAB: Switch window",
 
683
                                            "w: Wrap (log lines)",
 
684
                                            "v: Toggle verbose log",
 
685
                                            ))))
 
686
                self.log_message_raw(("bold",
 
687
                                      "  "
 
688
                                      .join(("Clients:",
 
689
                                             "+: Enable",
 
690
                                             "-: Disable",
 
691
                                             "R: Remove",
 
692
                                             "s: Start new checker",
 
693
                                             "S: Stop checker",
 
694
                                             "C: Checker OK",
 
695
                                             "a: Approve",
 
696
                                             "d: Deny"))))
 
697
                self.refresh()
 
698
            elif key == "tab":
 
699
                if self.topwidget.get_focus() is self.logbox:
 
700
                    self.topwidget.set_focus(0)
 
701
                else:
 
702
                    self.topwidget.set_focus(self.logbox)
 
703
                self.refresh()
 
704
            elif key == "v":
 
705
                if self.log_level == 0:
 
706
                    self.log_level = 1
 
707
                    self.log_message("Verbose mode: Off")
 
708
                else:
 
709
                    self.log_level = 0
 
710
                    self.log_message("Verbose mode: On")
 
711
            #elif (key == "end" or key == "meta >" or key == "G"
 
712
            #      or key == ">"):
 
713
            #    pass            # xxx end-of-buffer
 
714
            #elif (key == "home" or key == "meta <" or key == "g"
 
715
            #      or key == "<"):
 
716
            #    pass            # xxx beginning-of-buffer
 
717
            #elif key == "ctrl e" or key == "$":
 
718
            #    pass            # xxx move-end-of-line
 
719
            #elif key == "ctrl a" or key == "^":
 
720
            #    pass            # xxx move-beginning-of-line
 
721
            #elif key == "ctrl b" or key == "meta (" or key == "h":
 
722
            #    pass            # xxx left
 
723
            #elif key == "ctrl f" or key == "meta )" or key == "l":
 
724
            #    pass            # xxx right
 
725
            #elif key == "a":
 
726
            #    pass            # scroll up log
 
727
            #elif key == "z":
 
728
            #    pass            # scroll down log
 
729
            elif self.topwidget.selectable():
 
730
                self.topwidget.keypress(self.size, key)
 
731
                self.refresh()
 
732
        return True
 
733
 
 
734
ui = UserInterface()
 
735
try:
 
736
    ui.run()
 
737
except KeyboardInterrupt:
 
738
    ui.screen.stop()
 
739
except Exception as e:
 
740
    ui.log_message(str(e))
 
741
    ui.screen.stop()
 
742
    raise