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  • Committer: Björn Påhlsson
  • Date: 2008-08-15 20:17:32 UTC
  • mto: (237.7.1 mandos) (24.1.154 mandos)
  • mto: This revision was merged to the branch mainline in revision 77.
  • Revision ID: belorn@braxen-20080815201732-b7uux3yqs05b3fy9
Added configuration files support for mandos-client
Removed plus argument support for mandos-client

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Lines of Context:
1
 
#!/usr/bin/python
2
 
# -*- mode: python; coding: utf-8 -*-
3
 
4
 
# Mandos Monitor - Control and monitor the Mandos server
5
 
6
 
# Copyright © 2009-2012 Teddy Hogeborn
7
 
# Copyright © 2009-2012 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
 
 
29
 
from future_builtins import *
30
 
 
31
 
import sys
32
 
import os
33
 
import signal
34
 
 
35
 
import datetime
36
 
 
37
 
import urwid.curses_display
38
 
import urwid
39
 
 
40
 
from dbus.mainloop.glib import DBusGMainLoop
41
 
import gobject
42
 
 
43
 
import dbus
44
 
 
45
 
import UserList
46
 
 
47
 
import locale
48
 
 
49
 
locale.setlocale(locale.LC_ALL, '')
50
 
 
51
 
import logging
52
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
53
 
 
54
 
# Some useful constants
55
 
domain = 'se.recompile'
56
 
server_interface = domain + '.Mandos'
57
 
client_interface = domain + '.Mandos.Client'
58
 
version = "1.5.3"
59
 
 
60
 
# Always run in monochrome mode
61
 
urwid.curses_display.curses.has_colors = lambda : False
62
 
 
63
 
# Urwid doesn't support blinking, but we want it.  Since we have no
64
 
# use for underline on its own, we make underline also always blink.
65
 
urwid.curses_display.curses.A_UNDERLINE |= (
66
 
    urwid.curses_display.curses.A_BLINK)
67
 
 
68
 
def isoformat_to_datetime(iso):
69
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
70
 
    if not iso:
71
 
        return None
72
 
    d, t = iso.split("T", 1)
73
 
    year, month, day = d.split("-", 2)
74
 
    hour, minute, second = t.split(":", 2)
75
 
    second, fraction = divmod(float(second), 1)
76
 
    return datetime.datetime(int(year),
77
 
                             int(month),
78
 
                             int(day),
79
 
                             int(hour),
80
 
                             int(minute),
81
 
                             int(second),           # Whole seconds
82
 
                             int(fraction*1000000)) # Microseconds
83
 
 
84
 
class MandosClientPropertyCache(object):
85
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
86
 
    properties and calls a hook function when any of them are
87
 
    changed.
88
 
    """
89
 
    def __init__(self, proxy_object=None, *args, **kwargs):
90
 
        self.proxy = proxy_object # Mandos Client proxy object
91
 
        
92
 
        self.properties = dict()
93
 
        self.property_changed_match = (
94
 
            self.proxy.connect_to_signal("PropertyChanged",
95
 
                                         self.property_changed,
96
 
                                         client_interface,
97
 
                                         byte_arrays=True))
98
 
        
99
 
        self.properties.update(
100
 
            self.proxy.GetAll(client_interface,
101
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
102
 
 
103
 
        #XXX This breaks good super behaviour
104
 
#        super(MandosClientPropertyCache, self).__init__(
105
 
#            *args, **kwargs)
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, *args, **kwargs):
115
 
        self.property_changed_match.remove()
116
 
        super(MandosClientPropertyCache, self).__init__(
117
 
            *args, **kwargs)
118
 
 
119
 
 
120
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
121
 
    """A Mandos Client which is visible on the screen.
122
 
    """
123
 
    
124
 
    def __init__(self, server_proxy_object=None, update_hook=None,
125
 
                 delete_hook=None, logger=None, *args, **kwargs):
126
 
        # Called on update
127
 
        self.update_hook = update_hook
128
 
        # Called on delete
129
 
        self.delete_hook = delete_hook
130
 
        # Mandos Server proxy object
131
 
        self.server_proxy_object = server_proxy_object
132
 
        # Logger
133
 
        self.logger = logger
134
 
        
135
 
        self._update_timer_callback_tag = None
136
 
        self._update_timer_callback_lock = 0
137
 
        
138
 
        # The widget shown normally
139
 
        self._text_widget = urwid.Text("")
140
 
        # The widget shown when we have focus
141
 
        self._focus_text_widget = urwid.Text("")
142
 
        super(MandosClientWidget, self).__init__(
143
 
            update_hook=update_hook, delete_hook=delete_hook,
144
 
            *args, **kwargs)
145
 
        self.update()
146
 
        self.opened = False
147
 
        
148
 
        last_checked_ok = isoformat_to_datetime(self.properties
149
 
                                                ["LastCheckedOK"])
150
 
        
151
 
        if self.properties ["LastCheckerStatus"] != 0:
152
 
            self.using_timer(True)
153
 
        
154
 
        if self.need_approval:
155
 
            self.using_timer(True)
156
 
        
157
 
        self.match_objects = (
158
 
            self.proxy.connect_to_signal("CheckerCompleted",
159
 
                                         self.checker_completed,
160
 
                                         client_interface,
161
 
                                         byte_arrays=True),
162
 
            self.proxy.connect_to_signal("CheckerStarted",
163
 
                                         self.checker_started,
164
 
                                         client_interface,
165
 
                                         byte_arrays=True),
166
 
            self.proxy.connect_to_signal("GotSecret",
167
 
                                         self.got_secret,
168
 
                                         client_interface,
169
 
                                         byte_arrays=True),
170
 
            self.proxy.connect_to_signal("NeedApproval",
171
 
                                         self.need_approval,
172
 
                                         client_interface,
173
 
                                         byte_arrays=True),
174
 
            self.proxy.connect_to_signal("Rejected",
175
 
                                         self.rejected,
176
 
                                         client_interface,
177
 
                                         byte_arrays=True))
178
 
        #self.logger('Created client {0}'
179
 
        #            .format(self.properties["Name"]))
180
 
    
181
 
    def property_changed(self, property=None, value=None):
182
 
        super(self, MandosClientWidget).property_changed(property,
183
 
                                                         value)
184
 
        if property == "ApprovalPending":
185
 
            using_timer(bool(value))
186
 
        if property == "LastCheckerStatus":
187
 
            using_timer(value != 0)
188
 
            #self.logger('Checker for client {0} (command "{1}") was '
189
 
            #            ' successful'.format(self.properties["Name"],
190
 
            #                                 command))
191
 
    
192
 
    def using_timer(self, flag):
193
 
        """Call this method with True or False when timer should be
194
 
        activated or deactivated.
195
 
        """
196
 
        old = self._update_timer_callback_lock
197
 
        if flag:
198
 
            self._update_timer_callback_lock += 1
199
 
        else:
200
 
            self._update_timer_callback_lock -= 1
201
 
        if old == 0 and self._update_timer_callback_lock:
202
 
            # Will update the shown timer value every second
203
 
            self._update_timer_callback_tag = (gobject.timeout_add
204
 
                                               (1000,
205
 
                                                self.update_timer))
206
 
        elif old and self._update_timer_callback_lock == 0:
207
 
            gobject.source_remove(self._update_timer_callback_tag)
208
 
            self._update_timer_callback_tag = None
209
 
    
210
 
    def checker_completed(self, exitstatus, condition, command):
211
 
        if exitstatus == 0:
212
 
            self.update()
213
 
            return
214
 
        # Checker failed
215
 
        if os.WIFEXITED(condition):
216
 
            self.logger('Checker for client {0} (command "{1}")'
217
 
                        ' failed with exit code {2}'
218
 
                        .format(self.properties["Name"], command,
219
 
                                os.WEXITSTATUS(condition)))
220
 
        elif os.WIFSIGNALED(condition):
221
 
            self.logger('Checker for client {0} (command "{1}") was'
222
 
                        ' killed by signal {2}'
223
 
                        .format(self.properties["Name"], command,
224
 
                                os.WTERMSIG(condition)))
225
 
        elif os.WCOREDUMP(condition):
226
 
            self.logger('Checker for client {0} (command "{1}")'
227
 
                        ' dumped core'
228
 
                        .format(self.properties["Name"], command))
229
 
        else:
230
 
            self.logger('Checker for client {0} completed'
231
 
                        ' mysteriously'
232
 
                        .format(self.properties["Name"]))
233
 
        self.update()
234
 
    
235
 
    def checker_started(self, command):
236
 
        """Server signals that a checker started. This could be useful
237
 
           to log in the future. """
238
 
        #self.logger('Client {0} started checker "{1}"'
239
 
        #            .format(self.properties["Name"],
240
 
        #                    unicode(command)))
241
 
        pass
242
 
    
243
 
    def got_secret(self):
244
 
        self.logger('Client {0} received its secret'
245
 
                    .format(self.properties["Name"]))
246
 
    
247
 
    def need_approval(self, timeout, default):
248
 
        if not default:
249
 
            message = 'Client {0} needs approval within {1} seconds'
250
 
        else:
251
 
            message = 'Client {0} will get its secret in {1} seconds'
252
 
        self.logger(message.format(self.properties["Name"],
253
 
                                   timeout/1000))
254
 
        self.using_timer(True)
255
 
    
256
 
    def rejected(self, reason):
257
 
        self.logger('Client {0} was rejected; reason: {1}'
258
 
                    .format(self.properties["Name"], reason))
259
 
    
260
 
    def selectable(self):
261
 
        """Make this a "selectable" widget.
262
 
        This overrides the method from urwid.FlowWidget."""
263
 
        return True
264
 
    
265
 
    def rows(self, maxcolrow, focus=False):
266
 
        """How many rows this widget will occupy might depend on
267
 
        whether we have focus or not.
268
 
        This overrides the method from urwid.FlowWidget"""
269
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
270
 
    
271
 
    def current_widget(self, focus=False):
272
 
        if focus or self.opened:
273
 
            return self._focus_widget
274
 
        return self._widget
275
 
    
276
 
    def update(self):
277
 
        "Called when what is visible on the screen should be updated."
278
 
        # How to add standout mode to a style
279
 
        with_standout = { "normal": "standout",
280
 
                          "bold": "bold-standout",
281
 
                          "underline-blink":
282
 
                              "underline-blink-standout",
283
 
                          "bold-underline-blink":
284
 
                              "bold-underline-blink-standout",
285
 
                          }
286
 
 
287
 
        # Rebuild focus and non-focus widgets using current properties
288
 
 
289
 
        # Base part of a client. Name!
290
 
        base = '{name}: '.format(name=self.properties["Name"])
291
 
        if not self.properties["Enabled"]:
292
 
            message = "DISABLED"
293
 
        elif self.properties["ApprovalPending"]:
294
 
            timeout = datetime.timedelta(milliseconds
295
 
                                         = self.properties
296
 
                                         ["ApprovalDelay"])
297
 
            last_approval_request = isoformat_to_datetime(
298
 
                self.properties["LastApprovalRequest"])
299
 
            if last_approval_request is not None:
300
 
                timer = timeout - (datetime.datetime.utcnow()
301
 
                                   - last_approval_request)
302
 
            else:
303
 
                timer = datetime.timedelta()
304
 
            if self.properties["ApprovedByDefault"]:
305
 
                message = "Approval in {0}. (d)eny?"
306
 
            else:
307
 
                message = "Denial in {0}. (a)pprove?"
308
 
            message = message.format(unicode(timer).rsplit(".", 1)[0])
309
 
        elif self.properties["LastCheckerStatus"] != 0:
310
 
            # When checker has failed, show timer until client expires
311
 
            expires = self.properties["Expires"]
312
 
            if expires == "":
313
 
                timer = datetime.timedelta(0)
314
 
            else:
315
 
                expires = (datetime.datetime.strptime
316
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
317
 
                timer = expires - datetime.datetime.utcnow()
318
 
            message = ('A checker has failed! Time until client'
319
 
                       ' gets disabled: {0}'
320
 
                       .format(unicode(timer).rsplit(".", 1)[0]))
321
 
        else:
322
 
            message = "enabled"
323
 
        self._text = "{0}{1}".format(base, message)
324
 
            
325
 
        if not urwid.supports_unicode():
326
 
            self._text = self._text.encode("ascii", "replace")
327
 
        textlist = [("normal", self._text)]
328
 
        self._text_widget.set_text(textlist)
329
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
330
 
                                           text[1])
331
 
                                          if isinstance(text, tuple)
332
 
                                          else text
333
 
                                          for text in textlist])
334
 
        self._widget = self._text_widget
335
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
336
 
                                            "standout")
337
 
        # Run update hook, if any
338
 
        if self.update_hook is not None:
339
 
            self.update_hook()
340
 
    
341
 
    def update_timer(self):
342
 
        """called by gobject. Will indefinitely loop until
343
 
        gobject.source_remove() on tag is called"""
344
 
        self.update()
345
 
        return True             # Keep calling this
346
 
    
347
 
    def delete(self, *args, **kwargs):
348
 
        if self._update_timer_callback_tag is not None:
349
 
            gobject.source_remove(self._update_timer_callback_tag)
350
 
            self._update_timer_callback_tag = None
351
 
        for match in self.match_objects:
352
 
            match.remove()
353
 
        self.match_objects = ()
354
 
        if self.delete_hook is not None:
355
 
            self.delete_hook(self)
356
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
357
 
    
358
 
    def render(self, maxcolrow, focus=False):
359
 
        """Render differently if we have focus.
360
 
        This overrides the method from urwid.FlowWidget"""
361
 
        return self.current_widget(focus).render(maxcolrow,
362
 
                                                 focus=focus)
363
 
    
364
 
    def keypress(self, maxcolrow, key):
365
 
        """Handle keys.
366
 
        This overrides the method from urwid.FlowWidget"""
367
 
        if key == "+":
368
 
            self.proxy.Enable(dbus_interface = client_interface,
369
 
                              ignore_reply=True)
370
 
        elif key == "-":
371
 
            self.proxy.Disable(dbus_interface = client_interface,
372
 
                               ignore_reply=True)
373
 
        elif key == "a":
374
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
375
 
                               dbus_interface = client_interface,
376
 
                               ignore_reply=True)
377
 
        elif key == "d":
378
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
379
 
                                  dbus_interface = client_interface,
380
 
                               ignore_reply=True)
381
 
        elif key == "R" or key == "_" or key == "ctrl k":
382
 
            self.server_proxy_object.RemoveClient(self.proxy
383
 
                                                  .object_path,
384
 
                                                  ignore_reply=True)
385
 
        elif key == "s":
386
 
            self.proxy.StartChecker(dbus_interface = client_interface,
387
 
                                    ignore_reply=True)
388
 
        elif key == "S":
389
 
            self.proxy.StopChecker(dbus_interface = client_interface,
390
 
                                   ignore_reply=True)
391
 
        elif key == "C":
392
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
393
 
                                 ignore_reply=True)
394
 
        # xxx
395
 
#         elif key == "p" or key == "=":
396
 
#             self.proxy.pause()
397
 
#         elif key == "u" or key == ":":
398
 
#             self.proxy.unpause()
399
 
#         elif key == "RET":
400
 
#             self.open()
401
 
        else:
402
 
            return key
403
 
    
404
 
    def property_changed(self, property=None, value=None,
405
 
                         *args, **kwargs):
406
 
        """Call self.update() if old value is not new value.
407
 
        This overrides the method from MandosClientPropertyCache"""
408
 
        property_name = unicode(property)
409
 
        old_value = self.properties.get(property_name)
410
 
        super(MandosClientWidget, self).property_changed(
411
 
            property=property, value=value, *args, **kwargs)
412
 
        if self.properties.get(property_name) != old_value:
413
 
            self.update()
414
 
 
415
 
 
416
 
class ConstrainedListBox(urwid.ListBox):
417
 
    """Like a normal urwid.ListBox, but will consume all "up" or
418
 
    "down" key presses, thus not allowing any containing widgets to
419
 
    use them as an excuse to shift focus away from this widget.
420
 
    """
421
 
    def keypress(self, maxcolrow, key):
422
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
423
 
        if ret in ("up", "down"):
424
 
            return
425
 
        return ret
426
 
 
427
 
 
428
 
class UserInterface(object):
429
 
    """This is the entire user interface - the whole screen
430
 
    with boxes, lists of client widgets, etc.
431
 
    """
432
 
    def __init__(self, max_log_length=1000):
433
 
        DBusGMainLoop(set_as_default=True)
434
 
        
435
 
        self.screen = urwid.curses_display.Screen()
436
 
        
437
 
        self.screen.register_palette((
438
 
                ("normal",
439
 
                 "default", "default", None),
440
 
                ("bold",
441
 
                 "default", "default", "bold"),
442
 
                ("underline-blink",
443
 
                 "default", "default", "underline"),
444
 
                ("standout",
445
 
                 "default", "default", "standout"),
446
 
                ("bold-underline-blink",
447
 
                 "default", "default", ("bold", "underline")),
448
 
                ("bold-standout",
449
 
                 "default", "default", ("bold", "standout")),
450
 
                ("underline-blink-standout",
451
 
                 "default", "default", ("underline", "standout")),
452
 
                ("bold-underline-blink-standout",
453
 
                 "default", "default", ("bold", "underline",
454
 
                                          "standout")),
455
 
                ))
456
 
        
457
 
        if urwid.supports_unicode():
458
 
            self.divider = "─" # \u2500
459
 
            #self.divider = "━" # \u2501
460
 
        else:
461
 
            #self.divider = "-" # \u002d
462
 
            self.divider = "_" # \u005f
463
 
        
464
 
        self.screen.start()
465
 
        
466
 
        self.size = self.screen.get_cols_rows()
467
 
        
468
 
        self.clients = urwid.SimpleListWalker([])
469
 
        self.clients_dict = {}
470
 
        
471
 
        # We will add Text widgets to this list
472
 
        self.log = []
473
 
        self.max_log_length = max_log_length
474
 
        
475
 
        # We keep a reference to the log widget so we can remove it
476
 
        # from the ListWalker without it getting destroyed
477
 
        self.logbox = ConstrainedListBox(self.log)
478
 
        
479
 
        # This keeps track of whether self.uilist currently has
480
 
        # self.logbox in it or not
481
 
        self.log_visible = True
482
 
        self.log_wrap = "any"
483
 
        
484
 
        self.rebuild()
485
 
        self.log_message_raw(("bold",
486
 
                              "Mandos Monitor version " + version))
487
 
        self.log_message_raw(("bold",
488
 
                              "q: Quit  ?: Help"))
489
 
        
490
 
        self.busname = domain + '.Mandos'
491
 
        self.main_loop = gobject.MainLoop()
492
 
    
493
 
    def client_not_found(self, fingerprint, address):
494
 
        self.log_message("Client with address {0} and fingerprint"
495
 
                         " {1} could not be found"
496
 
                         .format(address, fingerprint))
497
 
    
498
 
    def rebuild(self):
499
 
        """This rebuilds the User Interface.
500
 
        Call this when the widget layout needs to change"""
501
 
        self.uilist = []
502
 
        #self.uilist.append(urwid.ListBox(self.clients))
503
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
504
 
                                                          clients),
505
 
                                       #header=urwid.Divider(),
506
 
                                       header=None,
507
 
                                       footer=
508
 
                                       urwid.Divider(div_char=
509
 
                                                     self.divider)))
510
 
        if self.log_visible:
511
 
            self.uilist.append(self.logbox)
512
 
        self.topwidget = urwid.Pile(self.uilist)
513
 
    
514
 
    def log_message(self, message):
515
 
        timestamp = datetime.datetime.now().isoformat()
516
 
        self.log_message_raw(timestamp + ": " + message)
517
 
    
518
 
    def log_message_raw(self, markup):
519
 
        """Add a log message to the log buffer."""
520
 
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
521
 
        if (self.max_log_length
522
 
            and len(self.log) > self.max_log_length):
523
 
            del self.log[0:len(self.log)-self.max_log_length-1]
524
 
        self.logbox.set_focus(len(self.logbox.body.contents),
525
 
                              coming_from="above")
526
 
        self.refresh()
527
 
    
528
 
    def toggle_log_display(self):
529
 
        """Toggle visibility of the log buffer."""
530
 
        self.log_visible = not self.log_visible
531
 
        self.rebuild()
532
 
        #self.log_message("Log visibility changed to: "
533
 
        #                 + unicode(self.log_visible))
534
 
    
535
 
    def change_log_display(self):
536
 
        """Change type of log display.
537
 
        Currently, this toggles wrapping of text lines."""
538
 
        if self.log_wrap == "clip":
539
 
            self.log_wrap = "any"
540
 
        else:
541
 
            self.log_wrap = "clip"
542
 
        for textwidget in self.log:
543
 
            textwidget.set_wrap_mode(self.log_wrap)
544
 
        #self.log_message("Wrap mode: " + self.log_wrap)
545
 
    
546
 
    def find_and_remove_client(self, path, name):
547
 
        """Find a client by its object path and remove it.
548
 
        
549
 
        This is connected to the ClientRemoved signal from the
550
 
        Mandos server object."""
551
 
        try:
552
 
            client = self.clients_dict[path]
553
 
        except KeyError:
554
 
            # not found?
555
 
            self.log_message("Unknown client {0!r} ({1!r}) removed"
556
 
                             .format(name, path))
557
 
            return
558
 
        client.delete()
559
 
    
560
 
    def add_new_client(self, path):
561
 
        client_proxy_object = self.bus.get_object(self.busname, path)
562
 
        self.add_client(MandosClientWidget(server_proxy_object
563
 
                                           =self.mandos_serv,
564
 
                                           proxy_object
565
 
                                           =client_proxy_object,
566
 
                                           update_hook
567
 
                                           =self.refresh,
568
 
                                           delete_hook
569
 
                                           =self.remove_client,
570
 
                                           logger
571
 
                                           =self.log_message),
572
 
                        path=path)
573
 
    
574
 
    def add_client(self, client, path=None):
575
 
        self.clients.append(client)
576
 
        if path is None:
577
 
            path = client.proxy.object_path
578
 
        self.clients_dict[path] = client
579
 
        self.clients.sort(None, lambda c: c.properties["Name"])
580
 
        self.refresh()
581
 
    
582
 
    def remove_client(self, client, path=None):
583
 
        self.clients.remove(client)
584
 
        if path is None:
585
 
            path = client.proxy.object_path
586
 
        del self.clients_dict[path]
587
 
        if not self.clients_dict:
588
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
589
 
            # is completely emptied, we need to recreate it.
590
 
            self.clients = urwid.SimpleListWalker([])
591
 
            self.rebuild()
592
 
        self.refresh()
593
 
    
594
 
    def refresh(self):
595
 
        """Redraw the screen"""
596
 
        canvas = self.topwidget.render(self.size, focus=True)
597
 
        self.screen.draw_screen(self.size, canvas)
598
 
    
599
 
    def run(self):
600
 
        """Start the main loop and exit when it's done."""
601
 
        self.bus = dbus.SystemBus()
602
 
        mandos_dbus_objc = self.bus.get_object(
603
 
            self.busname, "/", follow_name_owner_changes=True)
604
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
605
 
                                          dbus_interface
606
 
                                          = server_interface)
607
 
        try:
608
 
            mandos_clients = (self.mandos_serv
609
 
                              .GetAllClientsWithProperties())
610
 
        except dbus.exceptions.DBusException:
611
 
            mandos_clients = dbus.Dictionary()
612
 
        
613
 
        (self.mandos_serv
614
 
         .connect_to_signal("ClientRemoved",
615
 
                            self.find_and_remove_client,
616
 
                            dbus_interface=server_interface,
617
 
                            byte_arrays=True))
618
 
        (self.mandos_serv
619
 
         .connect_to_signal("ClientAdded",
620
 
                            self.add_new_client,
621
 
                            dbus_interface=server_interface,
622
 
                            byte_arrays=True))
623
 
        (self.mandos_serv
624
 
         .connect_to_signal("ClientNotFound",
625
 
                            self.client_not_found,
626
 
                            dbus_interface=server_interface,
627
 
                            byte_arrays=True))
628
 
        for path, client in mandos_clients.iteritems():
629
 
            client_proxy_object = self.bus.get_object(self.busname,
630
 
                                                      path)
631
 
            self.add_client(MandosClientWidget(server_proxy_object
632
 
                                               =self.mandos_serv,
633
 
                                               proxy_object
634
 
                                               =client_proxy_object,
635
 
                                               properties=client,
636
 
                                               update_hook
637
 
                                               =self.refresh,
638
 
                                               delete_hook
639
 
                                               =self.remove_client,
640
 
                                               logger
641
 
                                               =self.log_message),
642
 
                            path=path)
643
 
 
644
 
        self.refresh()
645
 
        self._input_callback_tag = (gobject.io_add_watch
646
 
                                    (sys.stdin.fileno(),
647
 
                                     gobject.IO_IN,
648
 
                                     self.process_input))
649
 
        self.main_loop.run()
650
 
        # Main loop has finished, we should close everything now
651
 
        gobject.source_remove(self._input_callback_tag)
652
 
        self.screen.stop()
653
 
    
654
 
    def stop(self):
655
 
        self.main_loop.quit()
656
 
    
657
 
    def process_input(self, source, condition):
658
 
        keys = self.screen.get_input()
659
 
        translations = { "ctrl n": "down",      # Emacs
660
 
                         "ctrl p": "up",        # Emacs
661
 
                         "ctrl v": "page down", # Emacs
662
 
                         "meta v": "page up",   # Emacs
663
 
                         " ": "page down",      # less
664
 
                         "f": "page down",      # less
665
 
                         "b": "page up",        # less
666
 
                         "j": "down",           # vi
667
 
                         "k": "up",             # vi
668
 
                         }
669
 
        for key in keys:
670
 
            try:
671
 
                key = translations[key]
672
 
            except KeyError:    # :-)
673
 
                pass
674
 
            
675
 
            if key == "q" or key == "Q":
676
 
                self.stop()
677
 
                break
678
 
            elif key == "window resize":
679
 
                self.size = self.screen.get_cols_rows()
680
 
                self.refresh()
681
 
            elif key == "\f":  # Ctrl-L
682
 
                self.refresh()
683
 
            elif key == "l" or key == "D":
684
 
                self.toggle_log_display()
685
 
                self.refresh()
686
 
            elif key == "w" or key == "i":
687
 
                self.change_log_display()
688
 
                self.refresh()
689
 
            elif key == "?" or key == "f1" or key == "esc":
690
 
                if not self.log_visible:
691
 
                    self.log_visible = True
692
 
                    self.rebuild()
693
 
                self.log_message_raw(("bold",
694
 
                                      "  ".
695
 
                                      join(("q: Quit",
696
 
                                            "?: Help",
697
 
                                            "l: Log window toggle",
698
 
                                            "TAB: Switch window",
699
 
                                            "w: Wrap (log)"))))
700
 
                self.log_message_raw(("bold",
701
 
                                      "  "
702
 
                                      .join(("Clients:",
703
 
                                             "+: Enable",
704
 
                                             "-: Disable",
705
 
                                             "R: Remove",
706
 
                                             "s: Start new checker",
707
 
                                             "S: Stop checker",
708
 
                                             "C: Checker OK",
709
 
                                             "a: Approve",
710
 
                                             "d: Deny"))))
711
 
                self.refresh()
712
 
            elif key == "tab":
713
 
                if self.topwidget.get_focus() is self.logbox:
714
 
                    self.topwidget.set_focus(0)
715
 
                else:
716
 
                    self.topwidget.set_focus(self.logbox)
717
 
                self.refresh()
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
736
 
            elif self.topwidget.selectable():
737
 
                self.topwidget.keypress(self.size, key)
738
 
                self.refresh()
739
 
        return True
740
 
 
741
 
ui = UserInterface()
742
 
try:
743
 
    ui.run()
744
 
except KeyboardInterrupt:
745
 
    ui.screen.stop()
746
 
except Exception, e:
747
 
    ui.log_message(unicode(e))
748
 
    ui.screen.stop()
749
 
    raise