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  • Committer: Teddy Hogeborn
  • Date: 2012-05-07 19:13:15 UTC
  • Revision ID: teddy@recompile.se-20120507191315-tbe55n4u1uq3l7ft
* mandos: Use all new builtins.
* mandos-ctl: - '' -
* mandos-monitor: - '' -

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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 © 2009-2012 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