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- Committer: Björn Påhlsson
- Date: 2009-02-09 18:15:18 UTC
- mto: (237.7.1 mandos) (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 250.
- Revision ID: belorn@braxen-20090209181518-powtql91qv3wu51d
Earlier signal handling
- files removed:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
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 © 2009-2014 Teddy Hogeborn
7
# Copyright © 2009-2014 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, condition, 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 os.WIFEXITED(condition):
185
self.logger('Checker for client {} (command "{}") failed'
186
' with exit code {}'
187
.format(self.properties["Name"], command,
188
os.WEXITSTATUS(condition)))
189
elif os.WIFSIGNALED(condition):
190
self.logger('Checker for client {} (command "{}") was'
191
' killed by signal {}'
192
.format(self.properties["Name"], command,
193
os.WTERMSIG(condition)))
194
elif os.WCOREDUMP(condition):
195
self.logger('Checker for client {} (command "{}") dumped'
196
' core'.format(self.properties["Name"],
197
command))
198
else:
199
self.logger('Checker for client {} completed'
200
' mysteriously'
201
.format(self.properties["Name"]))
202
self.update()
203
204
def checker_started(self, command):
205
"""Server signals that a checker started."""
206
self.logger('Client {} started checker "{}"'
207
.format(self.properties["Name"],
208
command), level=0)
209
210
def got_secret(self):
211
self.logger('Client {} received its secret'
212
.format(self.properties["Name"]))
213
214
def need_approval(self, timeout, default):
215
if not default:
216
message = 'Client {} needs approval within {} seconds'
217
else:
218
message = 'Client {} will get its secret in {} seconds'
219
self.logger(message.format(self.properties["Name"],
220
timeout/1000))
221
222
def rejected(self, reason):
223
self.logger('Client {} was rejected; reason: {}'
224
.format(self.properties["Name"], reason))
225
226
def selectable(self):
227
"""Make this a "selectable" widget.
228
This overrides the method from urwid.FlowWidget."""
229
return True
230
231
def rows(self, maxcolrow, focus=False):
232
"""How many rows this widget will occupy might depend on
233
whether we have focus or not.
234
This overrides the method from urwid.FlowWidget"""
235
return self.current_widget(focus).rows(maxcolrow, focus=focus)
236
237
def current_widget(self, focus=False):
238
if focus or self.opened:
239
return self._focus_widget
240
return self._widget
241
242
def update(self):
243
"Called when what is visible on the screen should be updated."
244
# How to add standout mode to a style
245
with_standout = { "normal": "standout",
246
"bold": "bold-standout",
247
"underline-blink":
248
"underline-blink-standout",
249
"bold-underline-blink":
250
"bold-underline-blink-standout",
251
}
252
253
# Rebuild focus and non-focus widgets using current properties
254
255
# Base part of a client. Name!
256
base = '{name}: '.format(name=self.properties["Name"])
257
if not self.properties["Enabled"]:
258
message = "DISABLED"
259
self.using_timer(False)
260
elif self.properties["ApprovalPending"]:
261
timeout = datetime.timedelta(milliseconds
262
= self.properties
263
["ApprovalDelay"])
264
last_approval_request = isoformat_to_datetime(
265
self.properties["LastApprovalRequest"])
266
if last_approval_request is not None:
267
timer = max(timeout - (datetime.datetime.utcnow()
268
- last_approval_request),
269
datetime.timedelta())
270
else:
271
timer = datetime.timedelta()
272
if self.properties["ApprovedByDefault"]:
273
message = "Approval in {}. (d)eny?"
274
else:
275
message = "Denial in {}. (a)pprove?"
276
message = message.format(str(timer).rsplit(".", 1)[0])
277
self.using_timer(True)
278
elif self.properties["LastCheckerStatus"] != 0:
279
# When checker has failed, show timer until client expires
280
expires = self.properties["Expires"]
281
if expires == "":
282
timer = datetime.timedelta(0)
283
else:
284
expires = (datetime.datetime.strptime
285
(expires, '%Y-%m-%dT%H:%M:%S.%f'))
286
timer = max(expires - datetime.datetime.utcnow(),
287
datetime.timedelta())
288
message = ('A checker has failed! Time until client'
289
' gets disabled: {}'
290
.format(str(timer).rsplit(".", 1)[0]))
291
self.using_timer(True)
292
else:
293
message = "enabled"
294
self.using_timer(False)
295
self._text = "{}{}".format(base, message)
296
297
if not urwid.supports_unicode():
298
self._text = self._text.encode("ascii", "replace")
299
textlist = [("normal", self._text)]
300
self._text_widget.set_text(textlist)
301
self._focus_text_widget.set_text([(with_standout[text[0]],
302
text[1])
303
if isinstance(text, tuple)
304
else text
305
for text in textlist])
306
self._widget = self._text_widget
307
self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
308
"standout")
309
# Run update hook, if any
310
if self.update_hook is not None:
311
self.update_hook()
312
313
def update_timer(self):
314
"""called by gobject. Will indefinitely loop until
315
gobject.source_remove() on tag is called"""
316
self.update()
317
return True # Keep calling this
318
319
def delete(self, **kwargs):
320
if self._update_timer_callback_tag is not None:
321
gobject.source_remove(self._update_timer_callback_tag)
322
self._update_timer_callback_tag = None
323
for match in self.match_objects:
324
match.remove()
325
self.match_objects = ()
326
if self.delete_hook is not None:
327
self.delete_hook(self)
328
return super(MandosClientWidget, self).delete(**kwargs)
329
330
def render(self, maxcolrow, focus=False):
331
"""Render differently if we have focus.
332
This overrides the method from urwid.FlowWidget"""
333
return self.current_widget(focus).render(maxcolrow,
334
focus=focus)
335
336
def keypress(self, maxcolrow, key):
337
"""Handle keys.
338
This overrides the method from urwid.FlowWidget"""
339
if key == "+":
340
self.proxy.Enable(dbus_interface = client_interface,
341
ignore_reply=True)
342
elif key == "-":
343
self.proxy.Disable(dbus_interface = client_interface,
344
ignore_reply=True)
345
elif key == "a":
346
self.proxy.Approve(dbus.Boolean(True, variant_level=1),
347
dbus_interface = client_interface,
348
ignore_reply=True)
349
elif key == "d":
350
self.proxy.Approve(dbus.Boolean(False, variant_level=1),
351
dbus_interface = client_interface,
352
ignore_reply=True)
353
elif key == "R" or key == "_" or key == "ctrl k":
354
self.server_proxy_object.RemoveClient(self.proxy
355
.object_path,
356
ignore_reply=True)
357
elif key == "s":
358
self.proxy.StartChecker(dbus_interface = client_interface,
359
ignore_reply=True)
360
elif key == "S":
361
self.proxy.StopChecker(dbus_interface = client_interface,
362
ignore_reply=True)
363
elif key == "C":
364
self.proxy.CheckedOK(dbus_interface = client_interface,
365
ignore_reply=True)
366
# xxx
367
# elif key == "p" or key == "=":
368
# self.proxy.pause()
369
# elif key == "u" or key == ":":
370
# self.proxy.unpause()
371
# elif key == "RET":
372
# self.open()
373
else:
374
return key
375
376
def properties_changed(self, interface, properties, invalidated):
377
"""Call self.update() if any properties changed.
378
This overrides the method from MandosClientPropertyCache"""
379
old_values = { key: self.properties.get(key)
380
for key in properties.keys() }
381
super(MandosClientWidget, self).properties_changed(
382
interface, properties, invalidated)
383
if any(old_values[key] != self.properties.get(key)
384
for key in old_values):
385
self.update()
386
387
388
class ConstrainedListBox(urwid.ListBox):
389
"""Like a normal urwid.ListBox, but will consume all "up" or
390
"down" key presses, thus not allowing any containing widgets to
391
use them as an excuse to shift focus away from this widget.
392
"""
393
def keypress(self, *args, **kwargs):
394
ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
395
if ret in ("up", "down"):
396
return
397
return ret
398
399
400
class UserInterface(object):
401
"""This is the entire user interface - the whole screen
402
with boxes, lists of client widgets, etc.
403
"""
404
def __init__(self, max_log_length=1000, log_level=1):
405
DBusGMainLoop(set_as_default=True)
406
407
self.screen = urwid.curses_display.Screen()
408
409
self.screen.register_palette((
410
("normal",
411
"default", "default", None),
412
("bold",
413
"bold", "default", "bold"),
414
("underline-blink",
415
"underline,blink", "default", "underline,blink"),
416
("standout",
417
"standout", "default", "standout"),
418
("bold-underline-blink",
419
"bold,underline,blink", "default", "bold,underline,blink"),
420
("bold-standout",
421
"bold,standout", "default", "bold,standout"),
422
("underline-blink-standout",
423
"underline,blink,standout", "default",
424
"underline,blink,standout"),
425
("bold-underline-blink-standout",
426
"bold,underline,blink,standout", "default",
427
"bold,underline,blink,standout"),
428
))
429
430
if urwid.supports_unicode():
431
self.divider = "─" # \u2500
432
#self.divider = "━" # \u2501
433
else:
434
#self.divider = "-" # \u002d
435
self.divider = "_" # \u005f
436
437
self.screen.start()
438
439
self.size = self.screen.get_cols_rows()
440
441
self.clients = urwid.SimpleListWalker([])
442
self.clients_dict = {}
443
444
# We will add Text widgets to this list
445
self.log = []
446
self.max_log_length = max_log_length
447
448
self.log_level = log_level
449
450
# We keep a reference to the log widget so we can remove it
451
# from the ListWalker without it getting destroyed
452
self.logbox = ConstrainedListBox(self.log)
453
454
# This keeps track of whether self.uilist currently has
455
# self.logbox in it or not
456
self.log_visible = True
457
self.log_wrap = "any"
458
459
self.rebuild()
460
self.log_message_raw(("bold",
461
"Mandos Monitor version " + version))
462
self.log_message_raw(("bold",
463
"q: Quit ?: Help"))
464
465
self.busname = domain + '.Mandos'
466
self.main_loop = gobject.MainLoop()
467
468
def client_not_found(self, fingerprint, address):
469
self.log_message("Client with address {} and fingerprint {}"
470
" could not be found"
471
.format(address, fingerprint))
472
473
def rebuild(self):
474
"""This rebuilds the User Interface.
475
Call this when the widget layout needs to change"""
476
self.uilist = []
477
#self.uilist.append(urwid.ListBox(self.clients))
478
self.uilist.append(urwid.Frame(ConstrainedListBox(self.
479
clients),
480
#header=urwid.Divider(),
481
header=None,
482
footer=
483
urwid.Divider(div_char=
484
self.divider)))
485
if self.log_visible:
486
self.uilist.append(self.logbox)
487
self.topwidget = urwid.Pile(self.uilist)
488
489
def log_message(self, message, level=1):
490
"""Log message formatted with timestamp"""
491
if level < self.log_level:
492
return
493
timestamp = datetime.datetime.now().isoformat()
494
self.log_message_raw("{}: {}".format(timestamp, message),
495
level=level)
496
497
def log_message_raw(self, markup, level=1):
498
"""Add a log message to the log buffer."""
499
if level < self.log_level:
500
return
501
self.log.append(urwid.Text(markup, wrap=self.log_wrap))
502
if (self.max_log_length
503
and len(self.log) > self.max_log_length):
504
del self.log[0:len(self.log)-self.max_log_length-1]
505
self.logbox.set_focus(len(self.logbox.body.contents),
506
coming_from="above")
507
self.refresh()
508
509
def toggle_log_display(self):
510
"""Toggle visibility of the log buffer."""
511
self.log_visible = not self.log_visible
512
self.rebuild()
513
self.log_message("Log visibility changed to: {}"
514
.format(self.log_visible), level=0)
515
516
def change_log_display(self):
517
"""Change type of log display.
518
Currently, this toggles wrapping of text lines."""
519
if self.log_wrap == "clip":
520
self.log_wrap = "any"
521
else:
522
self.log_wrap = "clip"
523
for textwidget in self.log:
524
textwidget.set_wrap_mode(self.log_wrap)
525
self.log_message("Wrap mode: {}".format(self.log_wrap),
526
level=0)
527
528
def find_and_remove_client(self, path, name):
529
"""Find a client by its object path and remove it.
530
531
This is connected to the ClientRemoved signal from the
532
Mandos server object."""
533
try:
534
client = self.clients_dict[path]
535
except KeyError:
536
# not found?
537
self.log_message("Unknown client {!r} ({!r}) removed"
538
.format(name, path))
539
return
540
client.delete()
541
542
def add_new_client(self, path):
543
client_proxy_object = self.bus.get_object(self.busname, path)
544
self.add_client(MandosClientWidget(server_proxy_object
545
=self.mandos_serv,
546
proxy_object
547
=client_proxy_object,
548
update_hook
549
=self.refresh,
550
delete_hook
551
=self.remove_client,
552
logger
553
=self.log_message),
554
path=path)
555
556
def add_client(self, client, path=None):
557
self.clients.append(client)
558
if path is None:
559
path = client.proxy.object_path
560
self.clients_dict[path] = client
561
self.clients.sort(key=lambda c: c.properties["Name"])
562
self.refresh()
563
564
def remove_client(self, client, path=None):
565
self.clients.remove(client)
566
if path is None:
567
path = client.proxy.object_path
568
del self.clients_dict[path]
569
self.refresh()
570
571
def refresh(self):
572
"""Redraw the screen"""
573
canvas = self.topwidget.render(self.size, focus=True)
574
self.screen.draw_screen(self.size, canvas)
575
576
def run(self):
577
"""Start the main loop and exit when it's done."""
578
self.bus = dbus.SystemBus()
579
mandos_dbus_objc = self.bus.get_object(
580
self.busname, "/", follow_name_owner_changes=True)
581
self.mandos_serv = dbus.Interface(mandos_dbus_objc,
582
dbus_interface
583
= server_interface)
584
try:
585
mandos_clients = (self.mandos_serv
586
.GetAllClientsWithProperties())
587
if not mandos_clients:
588
self.log_message_raw(("bold", "Note: Server has no clients."))
589
except dbus.exceptions.DBusException:
590
self.log_message_raw(("bold", "Note: No Mandos server running."))
591
mandos_clients = dbus.Dictionary()
592
593
(self.mandos_serv
594
.connect_to_signal("ClientRemoved",
595
self.find_and_remove_client,
596
dbus_interface=server_interface,
597
byte_arrays=True))
598
(self.mandos_serv
599
.connect_to_signal("ClientAdded",
600
self.add_new_client,
601
dbus_interface=server_interface,
602
byte_arrays=True))
603
(self.mandos_serv
604
.connect_to_signal("ClientNotFound",
605
self.client_not_found,
606
dbus_interface=server_interface,
607
byte_arrays=True))
608
for path, client in mandos_clients.items():
609
client_proxy_object = self.bus.get_object(self.busname,
610
path)
611
self.add_client(MandosClientWidget(server_proxy_object
612
=self.mandos_serv,
613
proxy_object
614
=client_proxy_object,
615
properties=client,
616
update_hook
617
=self.refresh,
618
delete_hook
619
=self.remove_client,
620
logger
621
=self.log_message),
622
path=path)
623
624
self.refresh()
625
self._input_callback_tag = (gobject.io_add_watch
626
(sys.stdin.fileno(),
627
gobject.IO_IN,
628
self.process_input))
629
self.main_loop.run()
630
# Main loop has finished, we should close everything now
631
gobject.source_remove(self._input_callback_tag)
632
self.screen.stop()
633
634
def stop(self):
635
self.main_loop.quit()
636
637
def process_input(self, source, condition):
638
keys = self.screen.get_input()
639
translations = { "ctrl n": "down", # Emacs
640
"ctrl p": "up", # Emacs
641
"ctrl v": "page down", # Emacs
642
"meta v": "page up", # Emacs
643
" ": "page down", # less
644
"f": "page down", # less
645
"b": "page up", # less
646
"j": "down", # vi
647
"k": "up", # vi
648
}
649
for key in keys:
650
try:
651
key = translations[key]
652
except KeyError: # :-)
653
pass
654
655
if key == "q" or key == "Q":
656
self.stop()
657
break
658
elif key == "window resize":
659
self.size = self.screen.get_cols_rows()
660
self.refresh()
661
elif key == "ctrl l":
662
self.screen.clear()
663
self.refresh()
664
elif key == "l" or key == "D":
665
self.toggle_log_display()
666
self.refresh()
667
elif key == "w" or key == "i":
668
self.change_log_display()
669
self.refresh()
670
elif key == "?" or key == "f1" or key == "esc":
671
if not self.log_visible:
672
self.log_visible = True
673
self.rebuild()
674
self.log_message_raw(("bold",
675
" ".
676
join(("q: Quit",
677
"?: Help",
678
"l: Log window toggle",
679
"TAB: Switch window",
680
"w: Wrap (log lines)",
681
"v: Toggle verbose log",
682
))))
683
self.log_message_raw(("bold",
684
" "
685
.join(("Clients:",
686
"+: Enable",
687
"-: Disable",
688
"R: Remove",
689
"s: Start new checker",
690
"S: Stop checker",
691
"C: Checker OK",
692
"a: Approve",
693
"d: Deny"))))
694
self.refresh()
695
elif key == "tab":
696
if self.topwidget.get_focus() is self.logbox:
697
self.topwidget.set_focus(0)
698
else:
699
self.topwidget.set_focus(self.logbox)
700
self.refresh()
701
elif key == "v":
702
if self.log_level == 0:
703
self.log_level = 1
704
self.log_message("Verbose mode: Off")
705
else:
706
self.log_level = 0
707
self.log_message("Verbose mode: On")
708
#elif (key == "end" or key == "meta >" or key == "G"
709
# or key == ">"):
710
# pass # xxx end-of-buffer
711
#elif (key == "home" or key == "meta <" or key == "g"
712
# or key == "<"):
713
# pass # xxx beginning-of-buffer
714
#elif key == "ctrl e" or key == "$":
715
# pass # xxx move-end-of-line
716
#elif key == "ctrl a" or key == "^":
717
# pass # xxx move-beginning-of-line
718
#elif key == "ctrl b" or key == "meta (" or key == "h":
719
# pass # xxx left
720
#elif key == "ctrl f" or key == "meta )" or key == "l":
721
# pass # xxx right
722
#elif key == "a":
723
# pass # scroll up log
724
#elif key == "z":
725
# pass # scroll down log
726
elif self.topwidget.selectable():
727
self.topwidget.keypress(self.size, key)
728
self.refresh()
729
return True
730
731
ui = UserInterface()
732
try:
733
ui.run()
734
except KeyboardInterrupt:
735
ui.screen.stop()
736
except Exception as e:
737
ui.log_message(str(e))
738
ui.screen.stop()
739
raise
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0