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  • Committer: Teddy Hogeborn
  • Date: 2014-02-16 12:54:34 UTC
  • mfrom: (237.7.203 trunk)
  • Revision ID: teddy@recompile.se-20140216125434-zll46tlbgvvl5wda
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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 © 2009-2013 Teddy Hogeborn
 
7
# Copyright © 2009-2013 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
import signal
 
36
 
 
37
import datetime
 
38
 
 
39
import urwid.curses_display
 
40
import urwid
 
41
 
 
42
from dbus.mainloop.glib import DBusGMainLoop
 
43
try:
 
44
    import gobject
 
45
except ImportError:
 
46
    from gi.repository import GObject as gobject
 
47
 
 
48
import dbus
 
49
 
 
50
import locale
 
51
 
 
52
if sys.version_info[0] == 2:
 
53
    str = unicode
 
54
 
 
55
locale.setlocale(locale.LC_ALL, '')
 
56
 
 
57
import logging
 
58
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
 
59
 
 
60
# Some useful constants
 
61
domain = 'se.recompile'
 
62
server_interface = domain + '.Mandos'
 
63
client_interface = domain + '.Mandos.Client'
 
64
version = "1.6.3"
 
65
 
 
66
def isoformat_to_datetime(iso):
 
67
    "Parse an ISO 8601 date string to a datetime.datetime()"
 
68
    if not iso:
 
69
        return None
 
70
    d, t = iso.split("T", 1)
 
71
    year, month, day = d.split("-", 2)
 
72
    hour, minute, second = t.split(":", 2)
 
73
    second, fraction = divmod(float(second), 1)
 
74
    return datetime.datetime(int(year),
 
75
                             int(month),
 
76
                             int(day),
 
77
                             int(hour),
 
78
                             int(minute),
 
79
                             int(second),           # Whole seconds
 
80
                             int(fraction*1000000)) # Microseconds
 
81
 
 
82
class MandosClientPropertyCache(object):
 
83
    """This wraps a Mandos Client D-Bus proxy object, caches the
 
84
    properties and calls a hook function when any of them are
 
85
    changed.
 
86
    """
 
87
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
88
        self.proxy = proxy_object # Mandos Client proxy object
 
89
        self.properties = dict() if properties is None else properties
 
90
        self.property_changed_match = (
 
91
            self.proxy.connect_to_signal("PropertyChanged",
 
92
                                         self._property_changed,
 
93
                                         client_interface,
 
94
                                         byte_arrays=True))
 
95
        
 
96
        if properties is None:
 
97
            self.properties.update(
 
98
                self.proxy.GetAll(client_interface,
 
99
                                  dbus_interface
 
100
                                  = dbus.PROPERTIES_IFACE))
 
101
        
 
102
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
103
    
 
104
    def _property_changed(self, property, value):
 
105
        """Helper which takes positional arguments"""
 
106
        return self.property_changed(property=property, value=value)
 
107
    
 
108
    def property_changed(self, property=None, value=None):
 
109
        """This is called whenever we get a PropertyChanged signal
 
110
        It updates the changed property in the "properties" dict.
 
111
        """
 
112
        # Update properties dict with new value
 
113
        self.properties[property] = value
 
114
    
 
115
    def delete(self):
 
116
        self.property_changed_match.remove()
 
117
 
 
118
 
 
119
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
 
120
    """A Mandos Client which is visible on the screen.
 
121
    """
 
122
    
 
123
    def __init__(self, server_proxy_object=None, update_hook=None,
 
124
                 delete_hook=None, logger=None, **kwargs):
 
125
        # Called on update
 
126
        self.update_hook = update_hook
 
127
        # Called on delete
 
128
        self.delete_hook = delete_hook
 
129
        # Mandos Server proxy object
 
130
        self.server_proxy_object = server_proxy_object
 
131
        # Logger
 
132
        self.logger = logger
 
133
        
 
134
        self._update_timer_callback_tag = None
 
135
        
 
136
        # The widget shown normally
 
137
        self._text_widget = urwid.Text("")
 
138
        # The widget shown when we have focus
 
139
        self._focus_text_widget = urwid.Text("")
 
140
        super(MandosClientWidget, self).__init__(**kwargs)
 
141
        self.update()
 
142
        self.opened = False
 
143
        
 
144
        self.match_objects = (
 
145
            self.proxy.connect_to_signal("CheckerCompleted",
 
146
                                         self.checker_completed,
 
147
                                         client_interface,
 
148
                                         byte_arrays=True),
 
149
            self.proxy.connect_to_signal("CheckerStarted",
 
150
                                         self.checker_started,
 
151
                                         client_interface,
 
152
                                         byte_arrays=True),
 
153
            self.proxy.connect_to_signal("GotSecret",
 
154
                                         self.got_secret,
 
155
                                         client_interface,
 
156
                                         byte_arrays=True),
 
157
            self.proxy.connect_to_signal("NeedApproval",
 
158
                                         self.need_approval,
 
159
                                         client_interface,
 
160
                                         byte_arrays=True),
 
161
            self.proxy.connect_to_signal("Rejected",
 
162
                                         self.rejected,
 
163
                                         client_interface,
 
164
                                         byte_arrays=True))
 
165
        #self.logger('Created client {0}'
 
166
        #            .format(self.properties["Name"]))
 
167
    
 
168
    def using_timer(self, flag):
 
169
        """Call this method with True or False when timer should be
 
170
        activated or deactivated.
 
171
        """
 
172
        if flag and self._update_timer_callback_tag is None:
 
173
            # Will update the shown timer value every second
 
174
            self._update_timer_callback_tag = (gobject.timeout_add
 
175
                                               (1000,
 
176
                                                self.update_timer))
 
177
        elif not (flag or self._update_timer_callback_tag is None):
 
178
            gobject.source_remove(self._update_timer_callback_tag)
 
179
            self._update_timer_callback_tag = None
 
180
    
 
181
    def checker_completed(self, exitstatus, condition, command):
 
182
        if exitstatus == 0:
 
183
            self.update()
 
184
            return
 
185
        # Checker failed
 
186
        if os.WIFEXITED(condition):
 
187
            self.logger('Checker for client {0} (command "{1}")'
 
188
                        ' failed with exit code {2}'
 
189
                        .format(self.properties["Name"], command,
 
190
                                os.WEXITSTATUS(condition)))
 
191
        elif os.WIFSIGNALED(condition):
 
192
            self.logger('Checker for client {0} (command "{1}") was'
 
193
                        ' killed by signal {2}'
 
194
                        .format(self.properties["Name"], command,
 
195
                                os.WTERMSIG(condition)))
 
196
        elif os.WCOREDUMP(condition):
 
197
            self.logger('Checker for client {0} (command "{1}")'
 
198
                        ' dumped core'
 
199
                        .format(self.properties["Name"], command))
 
200
        else:
 
201
            self.logger('Checker for client {0} completed'
 
202
                        ' mysteriously'
 
203
                        .format(self.properties["Name"]))
 
204
        self.update()
 
205
    
 
206
    def checker_started(self, command):
 
207
        """Server signals that a checker started. This could be useful
 
208
           to log in the future. """
 
209
        #self.logger('Client {0} started checker "{1}"'
 
210
        #            .format(self.properties["Name"],
 
211
        #                    str(command)))
 
212
        pass
 
213
    
 
214
    def got_secret(self):
 
215
        self.logger('Client {0} received its secret'
 
216
                    .format(self.properties["Name"]))
 
217
    
 
218
    def need_approval(self, timeout, default):
 
219
        if not default:
 
220
            message = 'Client {0} needs approval within {1} seconds'
 
221
        else:
 
222
            message = 'Client {0} will get its secret in {1} seconds'
 
223
        self.logger(message.format(self.properties["Name"],
 
224
                                   timeout/1000))
 
225
    
 
226
    def rejected(self, reason):
 
227
        self.logger('Client {0} was rejected; reason: {1}'
 
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 {0}. (d)eny?"
 
278
            else:
 
279
                message = "Denial in {0}. (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: {0}'
 
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 = "{0}{1}".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):
 
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
        # We keep a reference to the log widget so we can remove it
 
452
        # from the ListWalker without it getting destroyed
 
453
        self.logbox = ConstrainedListBox(self.log)
 
454
        
 
455
        # This keeps track of whether self.uilist currently has
 
456
        # self.logbox in it or not
 
457
        self.log_visible = True
 
458
        self.log_wrap = "any"
 
459
        
 
460
        self.rebuild()
 
461
        self.log_message_raw(("bold",
 
462
                              "Mandos Monitor version " + version))
 
463
        self.log_message_raw(("bold",
 
464
                              "q: Quit  ?: Help"))
 
465
        
 
466
        self.busname = domain + '.Mandos'
 
467
        self.main_loop = gobject.MainLoop()
 
468
    
 
469
    def client_not_found(self, fingerprint, address):
 
470
        self.log_message("Client with address {0} and fingerprint"
 
471
                         " {1} could not be found"
 
472
                         .format(address, fingerprint))
 
473
    
 
474
    def rebuild(self):
 
475
        """This rebuilds the User Interface.
 
476
        Call this when the widget layout needs to change"""
 
477
        self.uilist = []
 
478
        #self.uilist.append(urwid.ListBox(self.clients))
 
479
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
480
                                                          clients),
 
481
                                       #header=urwid.Divider(),
 
482
                                       header=None,
 
483
                                       footer=
 
484
                                       urwid.Divider(div_char=
 
485
                                                     self.divider)))
 
486
        if self.log_visible:
 
487
            self.uilist.append(self.logbox)
 
488
        self.topwidget = urwid.Pile(self.uilist)
 
489
    
 
490
    def log_message(self, message):
 
491
        """Log message formatted with timestamp"""
 
492
        timestamp = datetime.datetime.now().isoformat()
 
493
        self.log_message_raw(timestamp + ": " + message)
 
494
    
 
495
    def log_message_raw(self, markup):
 
496
        """Add a log message to the log buffer."""
 
497
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
 
498
        if (self.max_log_length
 
499
            and len(self.log) > self.max_log_length):
 
500
            del self.log[0:len(self.log)-self.max_log_length-1]
 
501
        self.logbox.set_focus(len(self.logbox.body.contents),
 
502
                              coming_from="above")
 
503
        self.refresh()
 
504
    
 
505
    def toggle_log_display(self):
 
506
        """Toggle visibility of the log buffer."""
 
507
        self.log_visible = not self.log_visible
 
508
        self.rebuild()
 
509
        #self.log_message("Log visibility changed to: "
 
510
        #                 + str(self.log_visible))
 
511
    
 
512
    def change_log_display(self):
 
513
        """Change type of log display.
 
514
        Currently, this toggles wrapping of text lines."""
 
515
        if self.log_wrap == "clip":
 
516
            self.log_wrap = "any"
 
517
        else:
 
518
            self.log_wrap = "clip"
 
519
        for textwidget in self.log:
 
520
            textwidget.set_wrap_mode(self.log_wrap)
 
521
        #self.log_message("Wrap mode: " + self.log_wrap)
 
522
    
 
523
    def find_and_remove_client(self, path, name):
 
524
        """Find a client by its object path and remove it.
 
525
        
 
526
        This is connected to the ClientRemoved signal from the
 
527
        Mandos server object."""
 
528
        try:
 
529
            client = self.clients_dict[path]
 
530
        except KeyError:
 
531
            # not found?
 
532
            self.log_message("Unknown client {0!r} ({1!r}) removed"
 
533
                             .format(name, path))
 
534
            return
 
535
        client.delete()
 
536
    
 
537
    def add_new_client(self, path):
 
538
        client_proxy_object = self.bus.get_object(self.busname, path)
 
539
        self.add_client(MandosClientWidget(server_proxy_object
 
540
                                           =self.mandos_serv,
 
541
                                           proxy_object
 
542
                                           =client_proxy_object,
 
543
                                           update_hook
 
544
                                           =self.refresh,
 
545
                                           delete_hook
 
546
                                           =self.remove_client,
 
547
                                           logger
 
548
                                           =self.log_message),
 
549
                        path=path)
 
550
    
 
551
    def add_client(self, client, path=None):
 
552
        self.clients.append(client)
 
553
        if path is None:
 
554
            path = client.proxy.object_path
 
555
        self.clients_dict[path] = client
 
556
        self.clients.sort(key=lambda c: c.properties["Name"])
 
557
        self.refresh()
 
558
    
 
559
    def remove_client(self, client, path=None):
 
560
        self.clients.remove(client)
 
561
        if path is None:
 
562
            path = client.proxy.object_path
 
563
        del self.clients_dict[path]
 
564
        self.refresh()
 
565
    
 
566
    def refresh(self):
 
567
        """Redraw the screen"""
 
568
        canvas = self.topwidget.render(self.size, focus=True)
 
569
        self.screen.draw_screen(self.size, canvas)
 
570
    
 
571
    def run(self):
 
572
        """Start the main loop and exit when it's done."""
 
573
        self.bus = dbus.SystemBus()
 
574
        mandos_dbus_objc = self.bus.get_object(
 
575
            self.busname, "/", follow_name_owner_changes=True)
 
576
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
577
                                          dbus_interface
 
578
                                          = server_interface)
 
579
        try:
 
580
            mandos_clients = (self.mandos_serv
 
581
                              .GetAllClientsWithProperties())
 
582
            if not mandos_clients:
 
583
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
584
        except dbus.exceptions.DBusException:
 
585
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
586
            mandos_clients = dbus.Dictionary()
 
587
        
 
588
        (self.mandos_serv
 
589
         .connect_to_signal("ClientRemoved",
 
590
                            self.find_and_remove_client,
 
591
                            dbus_interface=server_interface,
 
592
                            byte_arrays=True))
 
593
        (self.mandos_serv
 
594
         .connect_to_signal("ClientAdded",
 
595
                            self.add_new_client,
 
596
                            dbus_interface=server_interface,
 
597
                            byte_arrays=True))
 
598
        (self.mandos_serv
 
599
         .connect_to_signal("ClientNotFound",
 
600
                            self.client_not_found,
 
601
                            dbus_interface=server_interface,
 
602
                            byte_arrays=True))
 
603
        for path, client in mandos_clients.items():
 
604
            client_proxy_object = self.bus.get_object(self.busname,
 
605
                                                      path)
 
606
            self.add_client(MandosClientWidget(server_proxy_object
 
607
                                               =self.mandos_serv,
 
608
                                               proxy_object
 
609
                                               =client_proxy_object,
 
610
                                               properties=client,
 
611
                                               update_hook
 
612
                                               =self.refresh,
 
613
                                               delete_hook
 
614
                                               =self.remove_client,
 
615
                                               logger
 
616
                                               =self.log_message),
 
617
                            path=path)
 
618
        
 
619
        self.refresh()
 
620
        self._input_callback_tag = (gobject.io_add_watch
 
621
                                    (sys.stdin.fileno(),
 
622
                                     gobject.IO_IN,
 
623
                                     self.process_input))
 
624
        self.main_loop.run()
 
625
        # Main loop has finished, we should close everything now
 
626
        gobject.source_remove(self._input_callback_tag)
 
627
        self.screen.stop()
 
628
    
 
629
    def stop(self):
 
630
        self.main_loop.quit()
 
631
    
 
632
    def process_input(self, source, condition):
 
633
        keys = self.screen.get_input()
 
634
        translations = { "ctrl n": "down",      # Emacs
 
635
                         "ctrl p": "up",        # Emacs
 
636
                         "ctrl v": "page down", # Emacs
 
637
                         "meta v": "page up",   # Emacs
 
638
                         " ": "page down",      # less
 
639
                         "f": "page down",      # less
 
640
                         "b": "page up",        # less
 
641
                         "j": "down",           # vi
 
642
                         "k": "up",             # vi
 
643
                         }
 
644
        for key in keys:
 
645
            try:
 
646
                key = translations[key]
 
647
            except KeyError:    # :-)
 
648
                pass
 
649
            
 
650
            if key == "q" or key == "Q":
 
651
                self.stop()
 
652
                break
 
653
            elif key == "window resize":
 
654
                self.size = self.screen.get_cols_rows()
 
655
                self.refresh()
 
656
            elif key == "\f":  # Ctrl-L
 
657
                self.refresh()
 
658
            elif key == "l" or key == "D":
 
659
                self.toggle_log_display()
 
660
                self.refresh()
 
661
            elif key == "w" or key == "i":
 
662
                self.change_log_display()
 
663
                self.refresh()
 
664
            elif key == "?" or key == "f1" or key == "esc":
 
665
                if not self.log_visible:
 
666
                    self.log_visible = True
 
667
                    self.rebuild()
 
668
                self.log_message_raw(("bold",
 
669
                                      "  ".
 
670
                                      join(("q: Quit",
 
671
                                            "?: Help",
 
672
                                            "l: Log window toggle",
 
673
                                            "TAB: Switch window",
 
674
                                            "w: Wrap (log)"))))
 
675
                self.log_message_raw(("bold",
 
676
                                      "  "
 
677
                                      .join(("Clients:",
 
678
                                             "+: Enable",
 
679
                                             "-: Disable",
 
680
                                             "R: Remove",
 
681
                                             "s: Start new checker",
 
682
                                             "S: Stop checker",
 
683
                                             "C: Checker OK",
 
684
                                             "a: Approve",
 
685
                                             "d: Deny"))))
 
686
                self.refresh()
 
687
            elif key == "tab":
 
688
                if self.topwidget.get_focus() is self.logbox:
 
689
                    self.topwidget.set_focus(0)
 
690
                else:
 
691
                    self.topwidget.set_focus(self.logbox)
 
692
                self.refresh()
 
693
            #elif (key == "end" or key == "meta >" or key == "G"
 
694
            #      or key == ">"):
 
695
            #    pass            # xxx end-of-buffer
 
696
            #elif (key == "home" or key == "meta <" or key == "g"
 
697
            #      or key == "<"):
 
698
            #    pass            # xxx beginning-of-buffer
 
699
            #elif key == "ctrl e" or key == "$":
 
700
            #    pass            # xxx move-end-of-line
 
701
            #elif key == "ctrl a" or key == "^":
 
702
            #    pass            # xxx move-beginning-of-line
 
703
            #elif key == "ctrl b" or key == "meta (" or key == "h":
 
704
            #    pass            # xxx left
 
705
            #elif key == "ctrl f" or key == "meta )" or key == "l":
 
706
            #    pass            # xxx right
 
707
            #elif key == "a":
 
708
            #    pass            # scroll up log
 
709
            #elif key == "z":
 
710
            #    pass            # scroll down log
 
711
            elif self.topwidget.selectable():
 
712
                self.topwidget.keypress(self.size, key)
 
713
                self.refresh()
 
714
        return True
 
715
 
 
716
ui = UserInterface()
 
717
try:
 
718
    ui.run()
 
719
except KeyboardInterrupt:
 
720
    ui.screen.stop()
 
721
except Exception as e:
 
722
    ui.log_message(str(e))
 
723
    ui.screen.stop()
 
724
    raise