/mandos/trunk

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Viewing changes to mandos-monitor

  • Committer: Teddy Hogeborn
  • Date: 2009-02-09 02:01:13 UTC
  • Revision ID: teddy@fukt.bsnet.se-20090209020113-726hq380zvp8zt97
Four new interrelated features:

1. Support using a different network interface via both initramfs.conf
   (the DEVICE setting) and the kernel command line (sixth field of
   the "ip=" option as in Linux' Documentation/nfsroot.txt).

2. Support connecting to a specified Mandos server directly using a
   kernel command line option ("mandos=connect:<ADDRESS>:<PORT>").

3. Support connecting directly to an IPv4 address (and port) using the
   "--connect" option of mandos-client.

4. Support an empty string to the --interface option to mandos-client.

* Makefile (WARN): Increase strictness by changing to
                   "-Wstrict-aliasing=1".

* debian/mandos-client.README.Debian (Use the Correct Network
  Interface): Changed to refer to initramfs.conf and nfsroot.txt.
  (Test the Server): Improve wording.
  (Non-local Connection): New section.
* initramfs-tools-script: Obey DEVICE environment variable and setting
                          from "/conf/initramfs.conf".  Also let any
                          "ip=" kernel command line option override
                          it.  Support new "mandos=connect" option.
                          Call "configure_networking" to set up IP
                          address on interface if necessary.
* plugin-runner.conf: Change example.
* plugins.d/mandos-client.c: Some whitespace and comment changes.
  (start_mandos_communication): Take an additional argument for
                                address family, all callers changed.
                                Connect to an IPv4 address if address
                                family is AF_INET.  Only set IPv6
                                scope_id for link-local addresses.
  (main): Accept empty interface name; this will not bring up any
         interface and leave the interface as unspecified.  Also do
         not restore kernel log level if lowering it failed.
* plugins.d/mandos-client.xml (OPTIONS): Document that the
                                         "--interface" option accepts
                                         an empty string.
  (EXAMPLE): Change example IPv6 address to a link-local address.

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Lines of Context:
mandos-monitor
1
 
#!/usr/bin/python
2
 
# -*- mode: python; coding: utf-8 -*-
3
 
# 
4
 
# Mandos Monitor - Control and monitor the Mandos server
5
 
# 
6
 
# Copyright © 2009-2015 Teddy Hogeborn
7
 
# Copyright © 2009-2015 Björn Påhlsson
8
 
# 
9
 
# This program is free software: you can redistribute it and/or modify
10
 
# it under the terms of the GNU General Public License as published by
11
 
# the Free Software Foundation, either version 3 of the License, or
12
 
# (at your option) any later version.
13
 
#
14
 
#     This program is distributed in the hope that it will be useful,
15
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
16
 
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
 
#     GNU General Public License for more details.
18
 
# 
19
 
# You should have received a copy of the GNU General Public License
20
 
# along with this program.  If not, see
21
 
# <http://www.gnu.org/licenses/>.
22
 
# 
23
 
# Contact the authors at <mandos@recompile.se>.
24
 
# 
25
 
 
26
 
from __future__ import (division, absolute_import, print_function,
27
 
                        unicode_literals)
28
 
try:
29
 
    from future_builtins import *
30
 
except ImportError:
31
 
    pass
32
 
 
33
 
import sys
34
 
import os
35
 
 
36
 
import datetime
37
 
 
38
 
import urwid.curses_display
39
 
import urwid
40
 
 
41
 
from dbus.mainloop.glib import DBusGMainLoop
42
 
try:
43
 
    import gobject
44
 
except ImportError:
45
 
    from gi.repository import GObject as gobject
46
 
 
47
 
import dbus
48
 
 
49
 
import locale
50
 
 
51
 
if sys.version_info.major == 2:
52
 
    str = unicode
53
 
 
54
 
locale.setlocale(locale.LC_ALL, '')
55
 
 
56
 
import logging
57
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
58
 
 
59
 
# Some useful constants
60
 
domain = 'se.recompile'
61
 
server_interface = domain + '.Mandos'
62
 
client_interface = domain + '.Mandos.Client'
63
 
version = "1.6.9"
64
 
 
65
 
def isoformat_to_datetime(iso):
66
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
67
 
    if not iso:
68
 
        return None
69
 
    d, t = iso.split("T", 1)
70
 
    year, month, day = d.split("-", 2)
71
 
    hour, minute, second = t.split(":", 2)
72
 
    second, fraction = divmod(float(second), 1)
73
 
    return datetime.datetime(int(year),
74
 
                             int(month),
75
 
                             int(day),
76
 
                             int(hour),
77
 
                             int(minute),
78
 
                             int(second),           # Whole seconds
79
 
                             int(fraction*1000000)) # Microseconds
80
 
 
81
 
class MandosClientPropertyCache(object):
82
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
83
 
    properties and calls a hook function when any of them are
84
 
    changed.
85
 
    """
86
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
87
 
        self.proxy = proxy_object # Mandos Client proxy object
88
 
        self.properties = dict() if properties is None else properties
89
 
        self.property_changed_match = (
90
 
            self.proxy.connect_to_signal("PropertiesChanged",
91
 
                                         self.properties_changed,
92
 
                                         dbus.PROPERTIES_IFACE,
93
 
                                         byte_arrays=True))
94
 
        
95
 
        if properties is None:
96
 
            self.properties.update(
97
 
                self.proxy.GetAll(client_interface,
98
 
                                  dbus_interface
99
 
                                  = dbus.PROPERTIES_IFACE))
100
 
        
101
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
102
 
    
103
 
    def properties_changed(self, interface, properties, invalidated):
104
 
        """This is called whenever we get a PropertiesChanged signal
105
 
        It updates the changed properties in the "properties" dict.
106
 
        """
107
 
        # Update properties dict with new value
108
 
        self.properties.update(properties)
109
 
    
110
 
    def delete(self):
111
 
        self.property_changed_match.remove()
112
 
 
113
 
 
114
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
115
 
    """A Mandos Client which is visible on the screen.
116
 
    """
117
 
    
118
 
    def __init__(self, server_proxy_object=None, update_hook=None,
119
 
                 delete_hook=None, logger=None, **kwargs):
120
 
        # Called on update
121
 
        self.update_hook = update_hook
122
 
        # Called on delete
123
 
        self.delete_hook = delete_hook
124
 
        # Mandos Server proxy object
125
 
        self.server_proxy_object = server_proxy_object
126
 
        # Logger
127
 
        self.logger = logger
128
 
        
129
 
        self._update_timer_callback_tag = None
130
 
        
131
 
        # The widget shown normally
132
 
        self._text_widget = urwid.Text("")
133
 
        # The widget shown when we have focus
134
 
        self._focus_text_widget = urwid.Text("")
135
 
        super(MandosClientWidget, self).__init__(**kwargs)
136
 
        self.update()
137
 
        self.opened = False
138
 
        
139
 
        self.match_objects = (
140
 
            self.proxy.connect_to_signal("CheckerCompleted",
141
 
                                         self.checker_completed,
142
 
                                         client_interface,
143
 
                                         byte_arrays=True),
144
 
            self.proxy.connect_to_signal("CheckerStarted",
145
 
                                         self.checker_started,
146
 
                                         client_interface,
147
 
                                         byte_arrays=True),
148
 
            self.proxy.connect_to_signal("GotSecret",
149
 
                                         self.got_secret,
150
 
                                         client_interface,
151
 
                                         byte_arrays=True),
152
 
            self.proxy.connect_to_signal("NeedApproval",
153
 
                                         self.need_approval,
154
 
                                         client_interface,
155
 
                                         byte_arrays=True),
156
 
            self.proxy.connect_to_signal("Rejected",
157
 
                                         self.rejected,
158
 
                                         client_interface,
159
 
                                         byte_arrays=True))
160
 
        self.logger('Created client {}'
161
 
                    .format(self.properties["Name"]), level=0)
162
 
    
163
 
    def using_timer(self, flag):
164
 
        """Call this method with True or False when timer should be
165
 
        activated or deactivated.
166
 
        """
167
 
        if flag and self._update_timer_callback_tag is None:
168
 
            # Will update the shown timer value every second
169
 
            self._update_timer_callback_tag = (gobject.timeout_add
170
 
                                               (1000,
171
 
                                                self.update_timer))
172
 
        elif not (flag or self._update_timer_callback_tag is None):
173
 
            gobject.source_remove(self._update_timer_callback_tag)
174
 
            self._update_timer_callback_tag = None
175
 
    
176
 
    def checker_completed(self, exitstatus, signal, command):
177
 
        if exitstatus == 0:
178
 
            self.logger('Checker for client {} (command "{}")'
179
 
                        ' succeeded'.format(self.properties["Name"],
180
 
                                            command), level=0)
181
 
            self.update()
182
 
            return
183
 
        # Checker failed
184
 
        if exitstatus >= 0:
185
 
            self.logger('Checker for client {} (command "{}") failed'
186
 
                        ' with exit code {}'
187
 
                        .format(self.properties["Name"], command,
188
 
                                exitstatus))
189
 
        elif signal != 0:
190
 
            self.logger('Checker for client {} (command "{}") was'
191
 
                        ' killed by signal {}'
192
 
                        .format(self.properties["Name"], command,
193
 
                                signal))
194
 
        else:
195
 
            self.logger('Checker for client {} completed'
196
 
                        ' mysteriously'
197
 
                        .format(self.properties["Name"]))
198
 
        self.update()
199
 
    
200
 
    def checker_started(self, command):
201
 
        """Server signals that a checker started."""
202
 
        self.logger('Client {} started checker "{}"'
203
 
                    .format(self.properties["Name"],
204
 
                            command), level=0)
205
 
    
206
 
    def got_secret(self):
207
 
        self.logger('Client {} received its secret'
208
 
                    .format(self.properties["Name"]))
209
 
    
210
 
    def need_approval(self, timeout, default):
211
 
        if not default:
212
 
            message = 'Client {} needs approval within {} seconds'
213
 
        else:
214
 
            message = 'Client {} will get its secret in {} seconds'
215
 
        self.logger(message.format(self.properties["Name"],
216
 
                                   timeout/1000))
217
 
    
218
 
    def rejected(self, reason):
219
 
        self.logger('Client {} was rejected; reason: {}'
220
 
                    .format(self.properties["Name"], reason))
221
 
    
222
 
    def selectable(self):
223
 
        """Make this a "selectable" widget.
224
 
        This overrides the method from urwid.FlowWidget."""
225
 
        return True
226
 
    
227
 
    def rows(self, maxcolrow, focus=False):
228
 
        """How many rows this widget will occupy might depend on
229
 
        whether we have focus or not.
230
 
        This overrides the method from urwid.FlowWidget"""
231
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
232
 
    
233
 
    def current_widget(self, focus=False):
234
 
        if focus or self.opened:
235
 
            return self._focus_widget
236
 
        return self._widget
237
 
    
238
 
    def update(self):
239
 
        "Called when what is visible on the screen should be updated."
240
 
        # How to add standout mode to a style
241
 
        with_standout = { "normal": "standout",
242
 
                          "bold": "bold-standout",
243
 
                          "underline-blink":
244
 
                              "underline-blink-standout",
245
 
                          "bold-underline-blink":
246
 
                              "bold-underline-blink-standout",
247
 
                          }
248
 
        
249
 
        # Rebuild focus and non-focus widgets using current properties
250
 
        
251
 
        # Base part of a client. Name!
252
 
        base = '{name}: '.format(name=self.properties["Name"])
253
 
        if not self.properties["Enabled"]:
254
 
            message = "DISABLED"
255
 
            self.using_timer(False)
256
 
        elif self.properties["ApprovalPending"]:
257
 
            timeout = datetime.timedelta(milliseconds
258
 
                                         = self.properties
259
 
                                         ["ApprovalDelay"])
260
 
            last_approval_request = isoformat_to_datetime(
261
 
                self.properties["LastApprovalRequest"])
262
 
            if last_approval_request is not None:
263
 
                timer = max(timeout - (datetime.datetime.utcnow()
264
 
                                       - last_approval_request),
265
 
                            datetime.timedelta())
266
 
            else:
267
 
                timer = datetime.timedelta()
268
 
            if self.properties["ApprovedByDefault"]:
269
 
                message = "Approval in {}. (d)eny?"
270
 
            else:
271
 
                message = "Denial in {}. (a)pprove?"
272
 
            message = message.format(str(timer).rsplit(".", 1)[0])
273
 
            self.using_timer(True)
274
 
        elif self.properties["LastCheckerStatus"] != 0:
275
 
            # When checker has failed, show timer until client expires
276
 
            expires = self.properties["Expires"]
277
 
            if expires == "":
278
 
                timer = datetime.timedelta(0)
279
 
            else:
280
 
                expires = (datetime.datetime.strptime
281
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
282
 
                timer = max(expires - datetime.datetime.utcnow(),
283
 
                            datetime.timedelta())
284
 
            message = ('A checker has failed! Time until client'
285
 
                       ' gets disabled: {}'
286
 
                       .format(str(timer).rsplit(".", 1)[0]))
287
 
            self.using_timer(True)
288
 
        else:
289
 
            message = "enabled"
290
 
            self.using_timer(False)
291
 
        self._text = "{}{}".format(base, message)
292
 
        
293
 
        if not urwid.supports_unicode():
294
 
            self._text = self._text.encode("ascii", "replace")
295
 
        textlist = [("normal", self._text)]
296
 
        self._text_widget.set_text(textlist)
297
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
298
 
                                           text[1])
299
 
                                          if isinstance(text, tuple)
300
 
                                          else text
301
 
                                          for text in textlist])
302
 
        self._widget = self._text_widget
303
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
304
 
                                            "standout")
305
 
        # Run update hook, if any
306
 
        if self.update_hook is not None:
307
 
            self.update_hook()
308
 
    
309
 
    def update_timer(self):
310
 
        """called by gobject. Will indefinitely loop until
311
 
        gobject.source_remove() on tag is called"""
312
 
        self.update()
313
 
        return True             # Keep calling this
314
 
    
315
 
    def delete(self, **kwargs):
316
 
        if self._update_timer_callback_tag is not None:
317
 
            gobject.source_remove(self._update_timer_callback_tag)
318
 
            self._update_timer_callback_tag = None
319
 
        for match in self.match_objects:
320
 
            match.remove()
321
 
        self.match_objects = ()
322
 
        if self.delete_hook is not None:
323
 
            self.delete_hook(self)
324
 
        return super(MandosClientWidget, self).delete(**kwargs)
325
 
    
326
 
    def render(self, maxcolrow, focus=False):
327
 
        """Render differently if we have focus.
328
 
        This overrides the method from urwid.FlowWidget"""
329
 
        return self.current_widget(focus).render(maxcolrow,
330
 
                                                 focus=focus)
331
 
    
332
 
    def keypress(self, maxcolrow, key):
333
 
        """Handle keys.
334
 
        This overrides the method from urwid.FlowWidget"""
335
 
        if key == "+":
336
 
            self.proxy.Enable(dbus_interface = client_interface,
337
 
                              ignore_reply=True)
338
 
        elif key == "-":
339
 
            self.proxy.Disable(dbus_interface = client_interface,
340
 
                               ignore_reply=True)
341
 
        elif key == "a":
342
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
343
 
                               dbus_interface = client_interface,
344
 
                               ignore_reply=True)
345
 
        elif key == "d":
346
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
347
 
                                  dbus_interface = client_interface,
348
 
                               ignore_reply=True)
349
 
        elif key == "R" or key == "_" or key == "ctrl k":
350
 
            self.server_proxy_object.RemoveClient(self.proxy
351
 
                                                  .object_path,
352
 
                                                  ignore_reply=True)
353
 
        elif key == "s":
354
 
            self.proxy.StartChecker(dbus_interface = client_interface,
355
 
                                    ignore_reply=True)
356
 
        elif key == "S":
357
 
            self.proxy.StopChecker(dbus_interface = client_interface,
358
 
                                   ignore_reply=True)
359
 
        elif key == "C":
360
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
361
 
                                 ignore_reply=True)
362
 
        # xxx
363
 
#         elif key == "p" or key == "=":
364
 
#             self.proxy.pause()
365
 
#         elif key == "u" or key == ":":
366
 
#             self.proxy.unpause()
367
 
#         elif key == "RET":
368
 
#             self.open()
369
 
        else:
370
 
            return key
371
 
    
372
 
    def properties_changed(self, interface, properties, invalidated):
373
 
        """Call self.update() if any properties changed.
374
 
        This overrides the method from MandosClientPropertyCache"""
375
 
        old_values = { key: self.properties.get(key)
376
 
                       for key in properties.keys() }
377
 
        super(MandosClientWidget, self).properties_changed(
378
 
            interface, properties, invalidated)
379
 
        if any(old_values[key] != self.properties.get(key)
380
 
               for key in old_values):
381
 
            self.update()
382
 
 
383
 
 
384
 
class ConstrainedListBox(urwid.ListBox):
385
 
    """Like a normal urwid.ListBox, but will consume all "up" or
386
 
    "down" key presses, thus not allowing any containing widgets to
387
 
    use them as an excuse to shift focus away from this widget.
388
 
    """
389
 
    def keypress(self, *args, **kwargs):
390
 
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
391
 
        if ret in ("up", "down"):
392
 
            return
393
 
        return ret
394
 
 
395
 
 
396
 
class UserInterface(object):
397
 
    """This is the entire user interface - the whole screen
398
 
    with boxes, lists of client widgets, etc.
399
 
    """
400
 
    def __init__(self, max_log_length=1000, log_level=1):
401
 
        DBusGMainLoop(set_as_default=True)
402
 
        
403
 
        self.screen = urwid.curses_display.Screen()
404
 
        
405
 
        self.screen.register_palette((
406
 
                ("normal",
407
 
                 "default", "default", None),
408
 
                ("bold",
409
 
                 "bold", "default", "bold"),
410
 
                ("underline-blink",
411
 
                 "underline,blink", "default", "underline,blink"),
412
 
                ("standout",
413
 
                 "standout", "default", "standout"),
414
 
                ("bold-underline-blink",
415
 
                 "bold,underline,blink", "default", "bold,underline,blink"),
416
 
                ("bold-standout",
417
 
                 "bold,standout", "default", "bold,standout"),
418
 
                ("underline-blink-standout",
419
 
                 "underline,blink,standout", "default",
420
 
                 "underline,blink,standout"),
421
 
                ("bold-underline-blink-standout",
422
 
                 "bold,underline,blink,standout", "default",
423
 
                 "bold,underline,blink,standout"),
424
 
                ))
425
 
        
426
 
        if urwid.supports_unicode():
427
 
            self.divider = "─" # \u2500
428
 
            #self.divider = "━" # \u2501
429
 
        else:
430
 
            #self.divider = "-" # \u002d
431
 
            self.divider = "_" # \u005f
432
 
        
433
 
        self.screen.start()
434
 
        
435
 
        self.size = self.screen.get_cols_rows()
436
 
        
437
 
        self.clients = urwid.SimpleListWalker([])
438
 
        self.clients_dict = {}
439
 
        
440
 
        # We will add Text widgets to this list
441
 
        self.log = []
442
 
        self.max_log_length = max_log_length
443
 
        
444
 
        self.log_level = log_level
445
 
        
446
 
        # We keep a reference to the log widget so we can remove it
447
 
        # from the ListWalker without it getting destroyed
448
 
        self.logbox = ConstrainedListBox(self.log)
449
 
        
450
 
        # This keeps track of whether self.uilist currently has
451
 
        # self.logbox in it or not
452
 
        self.log_visible = True
453
 
        self.log_wrap = "any"
454
 
        
455
 
        self.rebuild()
456
 
        self.log_message_raw(("bold",
457
 
                              "Mandos Monitor version " + version))
458
 
        self.log_message_raw(("bold",
459
 
                              "q: Quit  ?: Help"))
460
 
        
461
 
        self.busname = domain + '.Mandos'
462
 
        self.main_loop = gobject.MainLoop()
463
 
    
464
 
    def client_not_found(self, fingerprint, address):
465
 
        self.log_message("Client with address {} and fingerprint {}"
466
 
                         " could not be found"
467
 
                         .format(address, fingerprint))
468
 
    
469
 
    def rebuild(self):
470
 
        """This rebuilds the User Interface.
471
 
        Call this when the widget layout needs to change"""
472
 
        self.uilist = []
473
 
        #self.uilist.append(urwid.ListBox(self.clients))
474
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
475
 
                                                          clients),
476
 
                                       #header=urwid.Divider(),
477
 
                                       header=None,
478
 
                                       footer=
479
 
                                       urwid.Divider(div_char=
480
 
                                                     self.divider)))
481
 
        if self.log_visible:
482
 
            self.uilist.append(self.logbox)
483
 
        self.topwidget = urwid.Pile(self.uilist)
484
 
    
485
 
    def log_message(self, message, level=1):
486
 
        """Log message formatted with timestamp"""
487
 
        if level < self.log_level:
488
 
            return
489
 
        timestamp = datetime.datetime.now().isoformat()
490
 
        self.log_message_raw("{}: {}".format(timestamp, message),
491
 
                             level=level)
492
 
    
493
 
    def log_message_raw(self, markup, level=1):
494
 
        """Add a log message to the log buffer."""
495
 
        if level < self.log_level:
496
 
            return
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
 
                         .format(self.log_visible), level=0)
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: {}".format(self.log_wrap),
522
 
                         level=0)
523
 
    
524
 
    def find_and_remove_client(self, path, name):
525
 
        """Find a client by its object path and remove it.
526
 
        
527
 
        This is connected to the ClientRemoved signal from the
528
 
        Mandos server object."""
529
 
        try:
530
 
            client = self.clients_dict[path]
531
 
        except KeyError:
532
 
            # not found?
533
 
            self.log_message("Unknown client {!r} ({!r}) removed"
534
 
                             .format(name, path))
535
 
            return
536
 
        client.delete()
537
 
    
538
 
    def add_new_client(self, path):
539
 
        client_proxy_object = self.bus.get_object(self.busname, path)
540
 
        self.add_client(MandosClientWidget(server_proxy_object
541
 
                                           =self.mandos_serv,
542
 
                                           proxy_object
543
 
                                           =client_proxy_object,
544
 
                                           update_hook
545
 
                                           =self.refresh,
546
 
                                           delete_hook
547
 
                                           =self.remove_client,
548
 
                                           logger
549
 
                                           =self.log_message),
550
 
                        path=path)
551
 
    
552
 
    def add_client(self, client, path=None):
553
 
        self.clients.append(client)
554
 
        if path is None:
555
 
            path = client.proxy.object_path
556
 
        self.clients_dict[path] = client
557
 
        self.clients.sort(key=lambda c: c.properties["Name"])
558
 
        self.refresh()
559
 
    
560
 
    def remove_client(self, client, path=None):
561
 
        self.clients.remove(client)
562
 
        if path is None:
563
 
            path = client.proxy.object_path
564
 
        del self.clients_dict[path]
565
 
        self.refresh()
566
 
    
567
 
    def refresh(self):
568
 
        """Redraw the screen"""
569
 
        canvas = self.topwidget.render(self.size, focus=True)
570
 
        self.screen.draw_screen(self.size, canvas)
571
 
    
572
 
    def run(self):
573
 
        """Start the main loop and exit when it's done."""
574
 
        self.bus = dbus.SystemBus()
575
 
        mandos_dbus_objc = self.bus.get_object(
576
 
            self.busname, "/", follow_name_owner_changes=True)
577
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
578
 
                                          dbus_interface
579
 
                                          = server_interface)
580
 
        try:
581
 
            mandos_clients = (self.mandos_serv
582
 
                              .GetAllClientsWithProperties())
583
 
            if not mandos_clients:
584
 
                self.log_message_raw(("bold", "Note: Server has no clients."))
585
 
        except dbus.exceptions.DBusException:
586
 
            self.log_message_raw(("bold", "Note: No Mandos server running."))
587
 
            mandos_clients = dbus.Dictionary()
588
 
        
589
 
        (self.mandos_serv
590
 
         .connect_to_signal("ClientRemoved",
591
 
                            self.find_and_remove_client,
592
 
                            dbus_interface=server_interface,
593
 
                            byte_arrays=True))
594
 
        (self.mandos_serv
595
 
         .connect_to_signal("ClientAdded",
596
 
                            self.add_new_client,
597
 
                            dbus_interface=server_interface,
598
 
                            byte_arrays=True))
599
 
        (self.mandos_serv
600
 
         .connect_to_signal("ClientNotFound",
601
 
                            self.client_not_found,
602
 
                            dbus_interface=server_interface,
603
 
                            byte_arrays=True))
604
 
        for path, client in mandos_clients.items():
605
 
            client_proxy_object = self.bus.get_object(self.busname,
606
 
                                                      path)
607
 
            self.add_client(MandosClientWidget(server_proxy_object
608
 
                                               =self.mandos_serv,
609
 
                                               proxy_object
610
 
                                               =client_proxy_object,
611
 
                                               properties=client,
612
 
                                               update_hook
613
 
                                               =self.refresh,
614
 
                                               delete_hook
615
 
                                               =self.remove_client,
616
 
                                               logger
617
 
                                               =self.log_message),
618
 
                            path=path)
619
 
        
620
 
        self.refresh()
621
 
        self._input_callback_tag = (gobject.io_add_watch
622
 
                                    (sys.stdin.fileno(),
623
 
                                     gobject.IO_IN,
624
 
                                     self.process_input))
625
 
        self.main_loop.run()
626
 
        # Main loop has finished, we should close everything now
627
 
        gobject.source_remove(self._input_callback_tag)
628
 
        self.screen.stop()
629
 
    
630
 
    def stop(self):
631
 
        self.main_loop.quit()
632
 
    
633
 
    def process_input(self, source, condition):
634
 
        keys = self.screen.get_input()
635
 
        translations = { "ctrl n": "down",      # Emacs
636
 
                         "ctrl p": "up",        # Emacs
637
 
                         "ctrl v": "page down", # Emacs
638
 
                         "meta v": "page up",   # Emacs
639
 
                         " ": "page down",      # less
640
 
                         "f": "page down",      # less
641
 
                         "b": "page up",        # less
642
 
                         "j": "down",           # vi
643
 
                         "k": "up",             # vi
644
 
                         }
645
 
        for key in keys:
646
 
            try:
647
 
                key = translations[key]
648
 
            except KeyError:    # :-)
649
 
                pass
650
 
            
651
 
            if key == "q" or key == "Q":
652
 
                self.stop()
653
 
                break
654
 
            elif key == "window resize":
655
 
                self.size = self.screen.get_cols_rows()
656
 
                self.refresh()
657
 
            elif key == "ctrl l":
658
 
                self.screen.clear()
659
 
                self.refresh()
660
 
            elif key == "l" or key == "D":
661
 
                self.toggle_log_display()
662
 
                self.refresh()
663
 
            elif key == "w" or key == "i":
664
 
                self.change_log_display()
665
 
                self.refresh()
666
 
            elif key == "?" or key == "f1" or key == "esc":
667
 
                if not self.log_visible:
668
 
                    self.log_visible = True
669
 
                    self.rebuild()
670
 
                self.log_message_raw(("bold",
671
 
                                      "  ".
672
 
                                      join(("q: Quit",
673
 
                                            "?: Help",
674
 
                                            "l: Log window toggle",
675
 
                                            "TAB: Switch window",
676
 
                                            "w: Wrap (log lines)",
677
 
                                            "v: Toggle verbose log",
678
 
                                            ))))
679
 
                self.log_message_raw(("bold",
680
 
                                      "  "
681
 
                                      .join(("Clients:",
682
 
                                             "+: Enable",
683
 
                                             "-: Disable",
684
 
                                             "R: Remove",
685
 
                                             "s: Start new checker",
686
 
                                             "S: Stop checker",
687
 
                                             "C: Checker OK",
688
 
                                             "a: Approve",
689
 
                                             "d: Deny"))))
690
 
                self.refresh()
691
 
            elif key == "tab":
692
 
                if self.topwidget.get_focus() is self.logbox:
693
 
                    self.topwidget.set_focus(0)
694
 
                else:
695
 
                    self.topwidget.set_focus(self.logbox)
696
 
                self.refresh()
697
 
            elif key == "v":
698
 
                if self.log_level == 0:
699
 
                    self.log_level = 1
700
 
                    self.log_message("Verbose mode: Off")
701
 
                else:
702
 
                    self.log_level = 0
703
 
                    self.log_message("Verbose mode: On")
704
 
            #elif (key == "end" or key == "meta >" or key == "G"
705
 
            #      or key == ">"):
706
 
            #    pass            # xxx end-of-buffer
707
 
            #elif (key == "home" or key == "meta <" or key == "g"
708
 
            #      or key == "<"):
709
 
            #    pass            # xxx beginning-of-buffer
710
 
            #elif key == "ctrl e" or key == "$":
711
 
            #    pass            # xxx move-end-of-line
712
 
            #elif key == "ctrl a" or key == "^":
713
 
            #    pass            # xxx move-beginning-of-line
714
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
715
 
            #    pass            # xxx left
716
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
717
 
            #    pass            # xxx right
718
 
            #elif key == "a":
719
 
            #    pass            # scroll up log
720
 
            #elif key == "z":
721
 
            #    pass            # scroll down log
722
 
            elif self.topwidget.selectable():
723
 
                self.topwidget.keypress(self.size, key)
724
 
                self.refresh()
725
 
        return True
726
 
 
727
 
ui = UserInterface()
728
 
try:
729
 
    ui.run()
730
 
except KeyboardInterrupt:
731
 
    ui.screen.stop()
732
 
except Exception as e:
733
 
    ui.log_message(str(e))
734
 
    ui.screen.stop()
735
 
    raise