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- Committer: Teddy Hogeborn
- Date: 2009-02-09 19:33:46 UTC
- mfrom: (24.1.135 mandos)
- mto: (24.1.136 mandos) (237.4.2 mandos-pipe-ipc) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 250.
- Revision ID: teddy@fukt.bsnet.se-20090209193346-5insyr1rsisor8dj
Merge from Björn:
* plugins.d/mandos-client.c (mc): Initialize globally.
(main): Better handling of signals.
* plugins.d/mandos-client.c (mc): Initialize globally.
(main): Better handling of signals.
added
removed
mandos-monitor
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
4
from __future__ import division, absolute_import, with_statement
5
6
import sys
7
import os
8
import signal
9
10
import datetime
11
12
import urwid.curses_display
13
import urwid
14
15
from dbus.mainloop.glib import DBusGMainLoop
16
import gobject
17
18
import dbus
19
20
import UserList
21
22
import locale
23
24
locale.setlocale(locale.LC_ALL, u'')
25
26
import logging
27
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
28
29
# Some useful constants
30
domain = 'se.bsnet.fukt'
31
server_interface = domain + '.Mandos'
32
client_interface = domain + '.Mandos.Client'
33
version = "1.0.15"
34
35
# Always run in monochrome mode
36
urwid.curses_display.curses.has_colors = lambda : False
37
38
# Urwid doesn't support blinking, but we want it. Since we have no
39
# use for underline on its own, we make underline also always blink.
40
urwid.curses_display.curses.A_UNDERLINE |= (
41
urwid.curses_display.curses.A_BLINK)
42
43
def isoformat_to_datetime(iso):
44
"Parse an ISO 8601 date string to a datetime.datetime()"
45
if not iso:
46
return None
47
d, t = iso.split(u"T", 1)
48
year, month, day = d.split(u"-", 2)
49
hour, minute, second = t.split(u":", 2)
50
second, fraction = divmod(float(second), 1)
51
return datetime.datetime(int(year),
52
int(month),
53
int(day),
54
int(hour),
55
int(minute),
56
int(second), # Whole seconds
57
int(fraction*1000000)) # Microseconds
58
59
class MandosClientPropertyCache(object):
60
"""This wraps a Mandos Client D-Bus proxy object, caches the
61
properties and calls a hook function when any of them are
62
changed.
63
"""
64
def __init__(self, proxy_object=None, *args, **kwargs):
65
self.proxy = proxy_object # Mandos Client proxy object
66
67
self.properties = dict()
68
self.proxy.connect_to_signal(u"PropertyChanged",
69
self.property_changed,
70
client_interface,
71
byte_arrays=True)
72
73
self.properties.update(
74
self.proxy.GetAll(client_interface,
75
dbus_interface = dbus.PROPERTIES_IFACE))
76
77
#XXX This break good super behaviour!
78
# super(MandosClientPropertyCache, self).__init__(
79
# *args, **kwargs)
80
81
def property_changed(self, property=None, value=None):
82
"""This is called whenever we get a PropertyChanged signal
83
It updates the changed property in the "properties" dict.
84
"""
85
# Update properties dict with new value
86
self.properties[property] = value
87
88
89
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
90
"""A Mandos Client which is visible on the screen.
91
"""
92
93
def __init__(self, server_proxy_object=None, update_hook=None,
94
delete_hook=None, logger=None, *args, **kwargs):
95
# Called on update
96
self.update_hook = update_hook
97
# Called on delete
98
self.delete_hook = delete_hook
99
# Mandos Server proxy object
100
self.server_proxy_object = server_proxy_object
101
# Logger
102
self.logger = logger
103
104
self._update_timer_callback_tag = None
105
self.last_checker_failed = False
106
107
# The widget shown normally
108
self._text_widget = urwid.Text(u"")
109
# The widget shown when we have focus
110
self._focus_text_widget = urwid.Text(u"")
111
super(MandosClientWidget, self).__init__(
112
update_hook=update_hook, delete_hook=delete_hook,
113
*args, **kwargs)
114
self.update()
115
self.opened = False
116
self.proxy.connect_to_signal(u"CheckerCompleted",
117
self.checker_completed,
118
client_interface,
119
byte_arrays=True)
120
self.proxy.connect_to_signal(u"CheckerStarted",
121
self.checker_started,
122
client_interface,
123
byte_arrays=True)
124
self.proxy.connect_to_signal(u"GotSecret",
125
self.got_secret,
126
client_interface,
127
byte_arrays=True)
128
self.proxy.connect_to_signal(u"NeedApproval",
129
self.need_approval,
130
client_interface,
131
byte_arrays=True)
132
self.proxy.connect_to_signal(u"Rejected",
133
self.rejected,
134
client_interface,
135
byte_arrays=True)
136
last_checked_ok = isoformat_to_datetime(self.properties
137
[u"LastCheckedOK"])
138
if last_checked_ok is None:
139
self.last_checker_failed = True
140
else:
141
self.last_checker_failed = ((datetime.datetime.utcnow()
142
- last_checked_ok)
143
> datetime.timedelta
144
(milliseconds=
145
self.properties
146
[u"Interval"]))
147
if self.last_checker_failed:
148
self._update_timer_callback_tag = (gobject.timeout_add
149
(1000,
150
self.update_timer))
151
152
def checker_completed(self, exitstatus, condition, command):
153
if exitstatus == 0:
154
if self.last_checker_failed:
155
self.last_checker_failed = False
156
gobject.source_remove(self._update_timer_callback_tag)
157
self._update_timer_callback_tag = None
158
#self.logger(u'Checker for client %s (command "%s")'
159
# u' was successful'
160
# % (self.properties[u"Name"], command))
161
self.update()
162
return
163
# Checker failed
164
if not self.last_checker_failed:
165
self.last_checker_failed = True
166
self._update_timer_callback_tag = (gobject.timeout_add
167
(1000,
168
self.update_timer))
169
if os.WIFEXITED(condition):
170
self.logger(u'Checker for client %s (command "%s")'
171
u' failed with exit code %s'
172
% (self.properties[u"Name"], command,
173
os.WEXITSTATUS(condition)))
174
elif os.WIFSIGNALED(condition):
175
self.logger(u'Checker for client %s (command "%s")'
176
u' was killed by signal %s'
177
% (self.properties[u"Name"], command,
178
os.WTERMSIG(condition)))
179
elif os.WCOREDUMP(condition):
180
self.logger(u'Checker for client %s (command "%s")'
181
u' dumped core'
182
% (self.properties[u"Name"], command))
183
else:
184
self.logger(u'Checker for client %s completed'
185
u' mysteriously')
186
self.update()
187
188
def checker_started(self, command):
189
#self.logger(u'Client %s started checker "%s"'
190
# % (self.properties[u"Name"], unicode(command)))
191
pass
192
193
def got_secret(self):
194
self.last_checker_failed = False
195
self.logger(u'Client %s received its secret'
196
% self.properties[u"Name"])
197
198
def need_approval(self, timeout, default):
199
if not default:
200
message = u'Client %s needs approval within %s seconds'
201
else:
202
message = u'Client %s will get its secret in %s seconds'
203
self.logger(message
204
% (self.properties[u"Name"], timeout/1000))
205
206
def rejected(self, reason):
207
self.logger(u'Client %s was rejected; reason: %s'
208
% (self.properties[u"Name"], reason))
209
210
def selectable(self):
211
"""Make this a "selectable" widget.
212
This overrides the method from urwid.FlowWidget."""
213
return True
214
215
def rows(self, (maxcol,), focus=False):
216
"""How many rows this widget will occupy might depend on
217
whether we have focus or not.
218
This overrides the method from urwid.FlowWidget"""
219
return self.current_widget(focus).rows((maxcol,), focus=focus)
220
221
def current_widget(self, focus=False):
222
if focus or self.opened:
223
return self._focus_widget
224
return self._widget
225
226
def update(self):
227
"Called when what is visible on the screen should be updated."
228
# How to add standout mode to a style
229
with_standout = { u"normal": u"standout",
230
u"bold": u"bold-standout",
231
u"underline-blink":
232
u"underline-blink-standout",
233
u"bold-underline-blink":
234
u"bold-underline-blink-standout",
235
}
236
237
# Rebuild focus and non-focus widgets using current properties
238
239
# Base part of a client. Name!
240
base = (u'%(name)s: '
241
% {u"name": self.properties[u"Name"]})
242
if not self.properties[u"Enabled"]:
243
message = u"DISABLED"
244
elif self.properties[u"ApprovalPending"]:
245
if self.properties[u"ApprovedByDefault"]:
246
message = u"Connection established to client. (d)eny?"
247
else:
248
message = u"Seeks approval to send secret. (a)pprove?"
249
elif self.last_checker_failed:
250
timeout = datetime.timedelta(milliseconds
251
= self.properties
252
[u"Timeout"])
253
last_ok = isoformat_to_datetime(
254
max((self.properties[u"LastCheckedOK"]
255
or self.properties[u"Created"]),
256
self.properties[u"LastEnabled"]))
257
timer = timeout - (datetime.datetime.utcnow() - last_ok)
258
message = (u'A checker has failed! Time until client'
259
u' gets diabled: %s'
260
% unicode(timer).rsplit(".", 1)[0])
261
else:
262
message = u"enabled"
263
self._text = "%s%s" % (base, message)
264
265
if not urwid.supports_unicode():
266
self._text = self._text.encode("ascii", "replace")
267
textlist = [(u"normal", self._text)]
268
self._text_widget.set_text(textlist)
269
self._focus_text_widget.set_text([(with_standout[text[0]],
270
text[1])
271
if isinstance(text, tuple)
272
else text
273
for text in textlist])
274
self._widget = self._text_widget
275
self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
276
"standout")
277
# Run update hook, if any
278
if self.update_hook is not None:
279
self.update_hook()
280
281
def update_timer(self):
282
"called by gobject"
283
self.update()
284
return True # Keep calling this
285
286
def delete(self):
287
if self._update_timer_callback_tag is not None:
288
gobject.source_remove(self._update_timer_callback_tag)
289
self._update_timer_callback_tag = None
290
if self.delete_hook is not None:
291
self.delete_hook(self)
292
293
def render(self, (maxcol,), focus=False):
294
"""Render differently if we have focus.
295
This overrides the method from urwid.FlowWidget"""
296
return self.current_widget(focus).render((maxcol,),
297
focus=focus)
298
299
def keypress(self, (maxcol,), key):
300
"""Handle keys.
301
This overrides the method from urwid.FlowWidget"""
302
if key == u"+":
303
self.proxy.Enable(dbus_interface = client_interface)
304
elif key == u"-":
305
self.proxy.Disable(dbus_interface = client_interface)
306
elif key == u"a":
307
self.proxy.Approve(dbus.Boolean(True, variant_level=1),
308
dbus_interface = client_interface)
309
elif key == u"d":
310
self.proxy.Approve(dbus.Boolean(False, variant_level=1),
311
dbus_interface = client_interface)
312
elif key == u"r" or key == u"_" or key == u"ctrl k":
313
self.server_proxy_object.RemoveClient(self.proxy
314
.object_path)
315
elif key == u"s":
316
self.proxy.StartChecker(dbus_interface = client_interface)
317
elif key == u"S":
318
self.proxy.StopChecker(dbus_interface = client_interface)
319
elif key == u"C":
320
self.proxy.CheckedOK(dbus_interface = client_interface)
321
# xxx
322
# elif key == u"p" or key == "=":
323
# self.proxy.pause()
324
# elif key == u"u" or key == ":":
325
# self.proxy.unpause()
326
# elif key == u"RET":
327
# self.open()
328
# elif key == u"+":
329
# self.proxy.Approve(True)
330
# elif key == u"-":
331
# self.proxy.Approve(False)
332
else:
333
return key
334
335
def property_changed(self, property=None, value=None,
336
*args, **kwargs):
337
"""Call self.update() if old value is not new value.
338
This overrides the method from MandosClientPropertyCache"""
339
property_name = unicode(property)
340
old_value = self.properties.get(property_name)
341
super(MandosClientWidget, self).property_changed(
342
property=property, value=value, *args, **kwargs)
343
if self.properties.get(property_name) != old_value:
344
self.update()
345
346
347
class ConstrainedListBox(urwid.ListBox):
348
"""Like a normal urwid.ListBox, but will consume all "up" or
349
"down" key presses, thus not allowing any containing widgets to
350
use them as an excuse to shift focus away from this widget.
351
"""
352
def keypress(self, (maxcol, maxrow), key):
353
ret = super(ConstrainedListBox, self).keypress((maxcol,
354
maxrow), key)
355
if ret in (u"up", u"down"):
356
return
357
return ret
358
359
360
class UserInterface(object):
361
"""This is the entire user interface - the whole screen
362
with boxes, lists of client widgets, etc.
363
"""
364
def __init__(self, max_log_length=1000):
365
DBusGMainLoop(set_as_default=True)
366
367
self.screen = urwid.curses_display.Screen()
368
369
self.screen.register_palette((
370
(u"normal",
371
u"default", u"default", None),
372
(u"bold",
373
u"default", u"default", u"bold"),
374
(u"underline-blink",
375
u"default", u"default", u"underline"),
376
(u"standout",
377
u"default", u"default", u"standout"),
378
(u"bold-underline-blink",
379
u"default", u"default", (u"bold", u"underline")),
380
(u"bold-standout",
381
u"default", u"default", (u"bold", u"standout")),
382
(u"underline-blink-standout",
383
u"default", u"default", (u"underline", u"standout")),
384
(u"bold-underline-blink-standout",
385
u"default", u"default", (u"bold", u"underline",
386
u"standout")),
387
))
388
389
if urwid.supports_unicode():
390
self.divider = u"─" # \u2500
391
#self.divider = u"━" # \u2501
392
else:
393
#self.divider = u"-" # \u002d
394
self.divider = u"_" # \u005f
395
396
self.screen.start()
397
398
self.size = self.screen.get_cols_rows()
399
400
self.clients = urwid.SimpleListWalker([])
401
self.clients_dict = {}
402
403
# We will add Text widgets to this list
404
self.log = []
405
self.max_log_length = max_log_length
406
407
# We keep a reference to the log widget so we can remove it
408
# from the ListWalker without it getting destroyed
409
self.logbox = ConstrainedListBox(self.log)
410
411
# This keeps track of whether self.uilist currently has
412
# self.logbox in it or not
413
self.log_visible = True
414
self.log_wrap = u"any"
415
416
self.rebuild()
417
self.log_message_raw((u"bold",
418
u"Mandos Monitor version " + version))
419
self.log_message_raw((u"bold",
420
u"q: Quit ?: Help"))
421
422
self.busname = domain + '.Mandos'
423
self.main_loop = gobject.MainLoop()
424
self.bus = dbus.SystemBus()
425
mandos_dbus_objc = self.bus.get_object(
426
self.busname, u"/", follow_name_owner_changes=True)
427
self.mandos_serv = dbus.Interface(mandos_dbus_objc,
428
dbus_interface
429
= server_interface)
430
try:
431
mandos_clients = (self.mandos_serv
432
.GetAllClientsWithProperties())
433
except dbus.exceptions.DBusException:
434
mandos_clients = dbus.Dictionary()
435
436
(self.mandos_serv
437
.connect_to_signal(u"ClientRemoved",
438
self.find_and_remove_client,
439
dbus_interface=server_interface,
440
byte_arrays=True))
441
(self.mandos_serv
442
.connect_to_signal(u"ClientAdded",
443
self.add_new_client,
444
dbus_interface=server_interface,
445
byte_arrays=True))
446
(self.mandos_serv
447
.connect_to_signal(u"ClientNotFound",
448
self.client_not_found,
449
dbus_interface=server_interface,
450
byte_arrays=True))
451
for path, client in mandos_clients.iteritems():
452
client_proxy_object = self.bus.get_object(self.busname,
453
path)
454
self.add_client(MandosClientWidget(server_proxy_object
455
=self.mandos_serv,
456
proxy_object
457
=client_proxy_object,
458
properties=client,
459
update_hook
460
=self.refresh,
461
delete_hook
462
=self.remove_client,
463
logger
464
=self.log_message),
465
path=path)
466
467
def client_not_found(self, fingerprint, address):
468
self.log_message((u"Client with address %s and fingerprint %s"
469
u" could not be found" % (address,
470
fingerprint)))
471
472
def rebuild(self):
473
"""This rebuilds the User Interface.
474
Call this when the widget layout needs to change"""
475
self.uilist = []
476
#self.uilist.append(urwid.ListBox(self.clients))
477
self.uilist.append(urwid.Frame(ConstrainedListBox(self.
478
clients),
479
#header=urwid.Divider(),
480
header=None,
481
footer=
482
urwid.Divider(div_char=
483
self.divider)))
484
if self.log_visible:
485
self.uilist.append(self.logbox)
486
pass
487
self.topwidget = urwid.Pile(self.uilist)
488
489
def log_message(self, message):
490
timestamp = datetime.datetime.now().isoformat()
491
self.log_message_raw(timestamp + u": " + message)
492
493
def log_message_raw(self, markup):
494
"""Add a log message to the log buffer."""
495
self.log.append(urwid.Text(markup, wrap=self.log_wrap))
496
if (self.max_log_length
497
and len(self.log) > self.max_log_length):
498
del self.log[0:len(self.log)-self.max_log_length-1]
499
self.logbox.set_focus(len(self.logbox.body.contents),
500
coming_from=u"above")
501
self.refresh()
502
503
def toggle_log_display(self):
504
"""Toggle visibility of the log buffer."""
505
self.log_visible = not self.log_visible
506
self.rebuild()
507
self.log_message(u"Log visibility changed to: "
508
+ unicode(self.log_visible))
509
510
def change_log_display(self):
511
"""Change type of log display.
512
Currently, this toggles wrapping of text lines."""
513
if self.log_wrap == u"clip":
514
self.log_wrap = u"any"
515
else:
516
self.log_wrap = u"clip"
517
for textwidget in self.log:
518
textwidget.set_wrap_mode(self.log_wrap)
519
self.log_message(u"Wrap mode: " + self.log_wrap)
520
521
def find_and_remove_client(self, path, name):
522
"""Find an client from its object path and remove it.
523
524
This is connected to the ClientRemoved signal from the
525
Mandos server object."""
526
try:
527
client = self.clients_dict[path]
528
except KeyError:
529
# not found?
530
return
531
self.remove_client(client, path)
532
533
def add_new_client(self, path):
534
client_proxy_object = self.bus.get_object(self.busname, path)
535
self.add_client(MandosClientWidget(server_proxy_object
536
=self.mandos_serv,
537
proxy_object
538
=client_proxy_object,
539
update_hook
540
=self.refresh,
541
delete_hook
542
=self.remove_client,
543
logger
544
=self.log_message),
545
path=path)
546
547
def add_client(self, client, path=None):
548
self.clients.append(client)
549
if path is None:
550
path = client.proxy.object_path
551
self.clients_dict[path] = client
552
self.clients.sort(None, lambda c: c.properties[u"Name"])
553
self.refresh()
554
555
def remove_client(self, client, path=None):
556
self.clients.remove(client)
557
if path is None:
558
path = client.proxy.object_path
559
del self.clients_dict[path]
560
if not self.clients_dict:
561
# Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
562
# is completely emptied, we need to recreate it.
563
self.clients = urwid.SimpleListWalker([])
564
self.rebuild()
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.refresh()
575
self._input_callback_tag = (gobject.io_add_watch
576
(sys.stdin.fileno(),
577
gobject.IO_IN,
578
self.process_input))
579
self.main_loop.run()
580
# Main loop has finished, we should close everything now
581
gobject.source_remove(self._input_callback_tag)
582
self.screen.stop()
583
584
def stop(self):
585
self.main_loop.quit()
586
587
def process_input(self, source, condition):
588
keys = self.screen.get_input()
589
translations = { u"ctrl n": u"down", # Emacs
590
u"ctrl p": u"up", # Emacs
591
u"ctrl v": u"page down", # Emacs
592
u"meta v": u"page up", # Emacs
593
u" ": u"page down", # less
594
u"f": u"page down", # less
595
u"b": u"page up", # less
596
u"j": u"down", # vi
597
u"k": u"up", # vi
598
}
599
for key in keys:
600
try:
601
key = translations[key]
602
except KeyError: # :-)
603
pass
604
605
if key == u"q" or key == u"Q":
606
self.stop()
607
break
608
elif key == u"window resize":
609
self.size = self.screen.get_cols_rows()
610
self.refresh()
611
elif key == u"\f": # Ctrl-L
612
self.refresh()
613
elif key == u"l" or key == u"D":
614
self.toggle_log_display()
615
self.refresh()
616
elif key == u"w" or key == u"i":
617
self.change_log_display()
618
self.refresh()
619
elif key == u"?" or key == u"f1" or key == u"esc":
620
if not self.log_visible:
621
self.log_visible = True
622
self.rebuild()
623
self.log_message_raw((u"bold",
624
u" ".
625
join((u"q: Quit",
626
u"?: Help",
627
u"l: Log window toggle",
628
u"TAB: Switch window",
629
u"w: Wrap (log)"))))
630
self.log_message_raw((u"bold",
631
u" "
632
.join((u"Clients:",
633
u"+: Enable",
634
u"-: Disable",
635
u"r: Remove",
636
u"s: Start new checker",
637
u"S: Stop checker",
638
u"C: Checker OK",
639
u"a: Approve",
640
u"d: Deny"))))
641
self.refresh()
642
elif key == u"tab":
643
if self.topwidget.get_focus() is self.logbox:
644
self.topwidget.set_focus(0)
645
else:
646
self.topwidget.set_focus(self.logbox)
647
self.refresh()
648
#elif (key == u"end" or key == u"meta >" or key == u"G"
649
# or key == u">"):
650
# pass # xxx end-of-buffer
651
#elif (key == u"home" or key == u"meta <" or key == u"g"
652
# or key == u"<"):
653
# pass # xxx beginning-of-buffer
654
#elif key == u"ctrl e" or key == u"$":
655
# pass # xxx move-end-of-line
656
#elif key == u"ctrl a" or key == u"^":
657
# pass # xxx move-beginning-of-line
658
#elif key == u"ctrl b" or key == u"meta (" or key == u"h":
659
# pass # xxx left
660
#elif key == u"ctrl f" or key == u"meta )" or key == u"l":
661
# pass # xxx right
662
#elif key == u"a":
663
# pass # scroll up log
664
#elif key == u"z":
665
# pass # scroll down log
666
elif self.topwidget.selectable():
667
self.topwidget.keypress(self.size, key)
668
self.refresh()
669
return True
670
671
ui = UserInterface()
672
try:
673
ui.run()
674
except KeyboardInterrupt:
675
ui.screen.stop()
676
except Exception, e:
677
ui.log_message(unicode(e))
678
ui.screen.stop()
679
raise
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0