65
30
urwid.curses_display.curses.A_UNDERLINE |= (
66
31
urwid.curses_display.curses.A_BLINK)
68
def isoformat_to_datetime(iso):
69
"Parse an ISO 8601 date string to a datetime.datetime()"
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),
81
int(second), # Whole seconds
82
int(fraction*1000000)) # Microseconds
84
33
class MandosClientPropertyCache(object):
85
34
"""This wraps a Mandos Client D-Bus proxy object, caches the
86
35
properties and calls a hook function when any of them are
89
def __init__(self, proxy_object=None, properties=None, **kwargs):
38
def __init__(self, proxy_object=None, properties=None, *args,
40
# Type conversion mapping
42
dbus.ObjectPath: unicode,
44
dbus.Signature: unicode,
52
dbus.Dictionary: dict,
90
59
self.proxy = proxy_object # Mandos Client proxy object
91
self.properties = dict() if properties is None else properties
92
self.property_changed_match = (
93
self.proxy.connect_to_signal("PropertyChanged",
94
self._property_changed,
61
if properties is None:
62
self.properties = dict()
64
self.properties = dict(self.convert_property(prop, val)
66
properties.iteritems())
67
self.proxy.connect_to_signal("PropertyChanged",
68
self.property_changed,
98
72
if properties is None:
99
73
self.properties.update(
74
self.convert_property(prop, val)
100
76
self.proxy.GetAll(client_interface,
102
= dbus.PROPERTIES_IFACE))
104
super(MandosClientPropertyCache, self).__init__(**kwargs)
106
def _property_changed(self, property, value):
107
"""Helper which takes positional arguments"""
108
return self.property_changed(property=property, value=value)
78
dbus.PROPERTIES_IFACE).iteritems())
79
super(MandosClientPropertyCache, self).__init__(
80
proxy_object=proxy_object,
81
properties=properties, *args, **kwargs)
83
def convert_property(self, property, value):
84
"""This converts the arguments from a D-Bus signal, which are
85
D-Bus types, into normal Python types, using a conversion
86
function from "self.type_map".
88
property_name = unicode(property) # Always a dbus.String
89
if isinstance(value, dbus.UTF8String):
90
# Should not happen, but prepare for it anyway
91
value = dbus.String(str(value).decode("utf-8"))
93
convfunc = self.type_map[type(value)]
95
# Unknown type, return unmodified
96
return property_name, value
97
return property_name, convfunc(value)
110
98
def property_changed(self, property=None, value=None):
111
99
"""This is called whenever we get a PropertyChanged signal
112
100
It updates the changed property in the "properties" dict.
102
# Convert name and value
103
property_name, cvalue = self.convert_property(property, value)
114
104
# Update properties dict with new value
115
self.properties[property] = value
118
self.property_changed_match.remove()
105
self.properties[property_name] = cvalue
121
108
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
125
112
def __init__(self, server_proxy_object=None, update_hook=None,
126
delete_hook=None, logger=None, **kwargs):
113
delete_hook=None, *args, **kwargs):
127
114
# Called on update
128
115
self.update_hook = update_hook
129
116
# Called on delete
130
117
self.delete_hook = delete_hook
131
118
# Mandos Server proxy object
132
119
self.server_proxy_object = server_proxy_object
136
self._update_timer_callback_tag = None
138
121
# The widget shown normally
139
122
self._text_widget = urwid.Text("")
140
123
# The widget shown when we have focus
141
124
self._focus_text_widget = urwid.Text("")
142
super(MandosClientWidget, self).__init__(**kwargs)
125
super(MandosClientWidget, self).__init__(
126
update_hook=update_hook, delete_hook=delete_hook,
144
129
self.opened = False
146
self.match_objects = (
147
self.proxy.connect_to_signal("CheckerCompleted",
148
self.checker_completed,
151
self.proxy.connect_to_signal("CheckerStarted",
152
self.checker_started,
155
self.proxy.connect_to_signal("GotSecret",
159
self.proxy.connect_to_signal("NeedApproval",
163
self.proxy.connect_to_signal("Rejected",
167
#self.logger('Created client {0}'
168
# .format(self.properties["Name"]))
170
def using_timer(self, flag):
171
"""Call this method with True or False when timer should be
172
activated or deactivated.
174
if flag and self._update_timer_callback_tag is None:
175
# Will update the shown timer value every second
176
self._update_timer_callback_tag = (gobject.timeout_add
179
elif not (flag or self._update_timer_callback_tag is None):
180
gobject.source_remove(self._update_timer_callback_tag)
181
self._update_timer_callback_tag = None
183
def checker_completed(self, exitstatus, condition, command):
188
if os.WIFEXITED(condition):
189
self.logger('Checker for client {0} (command "{1}")'
190
' failed with exit code {2}'
191
.format(self.properties["Name"], command,
192
os.WEXITSTATUS(condition)))
193
elif os.WIFSIGNALED(condition):
194
self.logger('Checker for client {0} (command "{1}") was'
195
' killed by signal {2}'
196
.format(self.properties["Name"], command,
197
os.WTERMSIG(condition)))
198
elif os.WCOREDUMP(condition):
199
self.logger('Checker for client {0} (command "{1}")'
201
.format(self.properties["Name"], command))
203
self.logger('Checker for client {0} completed'
205
.format(self.properties["Name"]))
208
def checker_started(self, command):
209
"""Server signals that a checker started. This could be useful
210
to log in the future. """
211
#self.logger('Client {0} started checker "{1}"'
212
# .format(self.properties["Name"],
216
def got_secret(self):
217
self.logger('Client {0} received its secret'
218
.format(self.properties["Name"]))
220
def need_approval(self, timeout, default):
222
message = 'Client {0} needs approval within {1} seconds'
224
message = 'Client {0} will get its secret in {1} seconds'
225
self.logger(message.format(self.properties["Name"],
228
def rejected(self, reason):
229
self.logger('Client {0} was rejected; reason: {1}'
230
.format(self.properties["Name"], reason))
232
131
def selectable(self):
233
132
"""Make this a "selectable" widget.
234
133
This overrides the method from urwid.FlowWidget."""
237
def rows(self, maxcolrow, focus=False):
136
def rows(self, (maxcol,), focus=False):
238
137
"""How many rows this widget will occupy might depend on
239
138
whether we have focus or not.
240
139
This overrides the method from urwid.FlowWidget"""
241
return self.current_widget(focus).rows(maxcolrow, focus=focus)
140
return self.current_widget(focus).rows((maxcol,), focus=focus)
243
142
def current_widget(self, focus=False):
244
143
if focus or self.opened:
248
147
def update(self):
249
148
"Called when what is visible on the screen should be updated."
250
149
# How to add standout mode to a style
251
with_standout = { "normal": "standout",
252
"bold": "bold-standout",
254
"underline-blink-standout",
255
"bold-underline-blink":
256
"bold-underline-blink-standout",
150
with_standout = { u"normal": u"standout",
151
u"bold": u"bold-standout",
153
u"underline-blink-standout",
154
u"bold-underline-blink":
155
u"bold-underline-blink-standout",
259
158
# Rebuild focus and non-focus widgets using current properties
261
# Base part of a client. Name!
262
base = '{name}: '.format(name=self.properties["Name"])
263
if not self.properties["Enabled"]:
265
self.using_timer(False)
266
elif self.properties["ApprovalPending"]:
267
timeout = datetime.timedelta(milliseconds
270
last_approval_request = isoformat_to_datetime(
271
self.properties["LastApprovalRequest"])
272
if last_approval_request is not None:
273
timer = max(timeout - (datetime.datetime.utcnow()
274
- last_approval_request),
275
datetime.timedelta())
277
timer = datetime.timedelta()
278
if self.properties["ApprovedByDefault"]:
279
message = "Approval in {0}. (d)eny?"
281
message = "Denial in {0}. (a)pprove?"
282
message = message.format(unicode(timer).rsplit(".", 1)[0])
283
self.using_timer(True)
284
elif self.properties["LastCheckerStatus"] != 0:
285
# When checker has failed, show timer until client expires
286
expires = self.properties["Expires"]
288
timer = datetime.timedelta(0)
290
expires = (datetime.datetime.strptime
291
(expires, '%Y-%m-%dT%H:%M:%S.%f'))
292
timer = max(expires - datetime.datetime.utcnow(),
293
datetime.timedelta())
294
message = ('A checker has failed! Time until client'
295
' gets disabled: {0}'
296
.format(unicode(timer).rsplit(".", 1)[0]))
297
self.using_timer(True)
300
self.using_timer(False)
301
self._text = "{0}{1}".format(base, message)
159
self._text = (u'name="%(name)s", enabled=%(enabled)s'
303
161
if not urwid.supports_unicode():
304
162
self._text = self._text.encode("ascii", "replace")
305
textlist = [("normal", self._text)]
163
textlist = [(u"normal", u"BLÄRGH: "), (u"bold", self._text)]
306
164
self._text_widget.set_text(textlist)
307
165
self._focus_text_widget.set_text([(with_standout[text[0]],
316
174
if self.update_hook is not None:
317
175
self.update_hook()
319
def update_timer(self):
320
"""called by gobject. Will indefinitely loop until
321
gobject.source_remove() on tag is called"""
323
return True # Keep calling this
325
def delete(self, **kwargs):
326
if self._update_timer_callback_tag is not None:
327
gobject.source_remove(self._update_timer_callback_tag)
328
self._update_timer_callback_tag = None
329
for match in self.match_objects:
331
self.match_objects = ()
332
178
if self.delete_hook is not None:
333
179
self.delete_hook(self)
334
return super(MandosClientWidget, self).delete(**kwargs)
336
def render(self, maxcolrow, focus=False):
181
def render(self, (maxcol,), focus=False):
337
182
"""Render differently if we have focus.
338
183
This overrides the method from urwid.FlowWidget"""
339
return self.current_widget(focus).render(maxcolrow,
184
return self.current_widget(focus).render((maxcol,),
342
def keypress(self, maxcolrow, key):
187
def keypress(self, (maxcol,), key):
344
189
This overrides the method from urwid.FlowWidget"""
346
self.proxy.Enable(dbus_interface = client_interface,
349
self.proxy.Disable(dbus_interface = client_interface,
352
self.proxy.Approve(dbus.Boolean(True, variant_level=1),
353
dbus_interface = client_interface,
356
self.proxy.Approve(dbus.Boolean(False, variant_level=1),
357
dbus_interface = client_interface,
359
elif key == "R" or key == "_" or key == "ctrl k":
190
if key == u"e" or key == u"+":
192
elif key == u"d" or key == u"-":
194
elif key == u"r" or key == u"_":
360
195
self.server_proxy_object.RemoveClient(self.proxy
364
self.proxy.StartChecker(dbus_interface = client_interface,
367
self.proxy.StopChecker(dbus_interface = client_interface,
370
self.proxy.CheckedOK(dbus_interface = client_interface,
198
self.proxy.StartChecker()
200
self.proxy.StopChecker()
202
self.proxy.CheckedOK()
373
# elif key == "p" or key == "=":
204
# elif key == u"p" or key == "=":
374
205
# self.proxy.pause()
375
# elif key == "u" or key == ":":
206
# elif key == u"u" or key == ":":
376
207
# self.proxy.unpause()
208
# elif key == u"RET":
382
def property_changed(self, property=None, **kwargs):
213
def property_changed(self, property=None, value=None,
383
215
"""Call self.update() if old value is not new value.
384
216
This overrides the method from MandosClientPropertyCache"""
385
217
property_name = unicode(property)
386
218
old_value = self.properties.get(property_name)
387
219
super(MandosClientWidget, self).property_changed(
388
property=property, **kwargs)
220
property=property, value=value, *args, **kwargs)
389
221
if self.properties.get(property_name) != old_value:
393
class ConstrainedListBox(urwid.ListBox):
394
"""Like a normal urwid.ListBox, but will consume all "up" or
395
"down" key presses, thus not allowing any containing widgets to
396
use them as an excuse to shift focus away from this widget.
398
def keypress(self, *args, **kwargs):
399
ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
400
if ret in ("up", "down"):
405
225
class UserInterface(object):
406
226
"""This is the entire user interface - the whole screen
407
227
with boxes, lists of client widgets, etc.
409
def __init__(self, max_log_length=1000):
410
DBusGMainLoop(set_as_default=True)
230
DBusGMainLoop(set_as_default=True )
412
232
self.screen = urwid.curses_display.Screen()
414
234
self.screen.register_palette((
416
"default", "default", None),
418
"default", "default", "bold"),
420
"default", "default", "underline"),
422
"default", "default", "standout"),
423
("bold-underline-blink",
424
"default", "default", ("bold", "underline")),
426
"default", "default", ("bold", "standout")),
427
("underline-blink-standout",
428
"default", "default", ("underline", "standout")),
429
("bold-underline-blink-standout",
430
"default", "default", ("bold", "underline",
236
u"default", u"default", None),
238
u"default", u"default", u"bold"),
240
u"default", u"default", u"underline"),
242
u"default", u"default", u"standout"),
243
(u"bold-underline-blink",
244
u"default", u"default", (u"bold", u"underline")),
246
u"default", u"default", (u"bold", u"standout")),
247
(u"underline-blink-standout",
248
u"default", u"default", (u"underline", u"standout")),
249
(u"bold-underline-blink-standout",
250
u"default", u"default", (u"bold", u"underline",
434
if urwid.supports_unicode():
435
self.divider = "─" # \u2500
436
#self.divider = "━" # \u2501
438
#self.divider = "-" # \u002d
439
self.divider = "_" # \u005f
441
254
self.screen.start()
443
256
self.size = self.screen.get_cols_rows()
445
258
self.clients = urwid.SimpleListWalker([])
446
259
self.clients_dict = {}
448
# We will add Text widgets to this list
450
self.max_log_length = max_log_length
452
# We keep a reference to the log widget so we can remove it
453
# from the ListWalker without it getting destroyed
454
self.logbox = ConstrainedListBox(self.log)
456
# This keeps track of whether self.uilist currently has
457
# self.logbox in it or not
458
self.log_visible = True
459
self.log_wrap = "any"
462
self.log_message_raw(("bold",
463
"Mandos Monitor version " + version))
464
self.log_message_raw(("bold",
260
self.topwidget = urwid.LineBox(urwid.ListBox(self.clients))
261
#self.topwidget = urwid.ListBox(clients)
467
263
self.busname = domain + '.Mandos'
468
264
self.main_loop = gobject.MainLoop()
470
def client_not_found(self, fingerprint, address):
471
self.log_message("Client with address {0} and fingerprint"
472
" {1} could not be found"
473
.format(address, fingerprint))
476
"""This rebuilds the User Interface.
477
Call this when the widget layout needs to change"""
479
#self.uilist.append(urwid.ListBox(self.clients))
480
self.uilist.append(urwid.Frame(ConstrainedListBox(self.
482
#header=urwid.Divider(),
485
urwid.Divider(div_char=
488
self.uilist.append(self.logbox)
489
self.topwidget = urwid.Pile(self.uilist)
491
def log_message(self, message):
492
timestamp = datetime.datetime.now().isoformat()
493
self.log_message_raw(timestamp + ": " + message)
495
def log_message_raw(self, markup):
496
"""Add a log message to the log buffer."""
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),
505
def toggle_log_display(self):
506
"""Toggle visibility of the log buffer."""
507
self.log_visible = not self.log_visible
509
#self.log_message("Log visibility changed to: "
510
# + unicode(self.log_visible))
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"
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: " + self.log_wrap)
265
self.bus = dbus.SystemBus()
266
mandos_dbus_objc = self.bus.get_object(
267
self.busname, u"/", follow_name_owner_changes=True)
268
self.mandos_serv = dbus.Interface(mandos_dbus_objc,
272
mandos_clients = (self.mandos_serv
273
.GetAllClientsWithProperties())
274
except dbus.exceptions.DBusException:
275
mandos_clients = dbus.Dictionary()
278
.connect_to_signal("ClientRemoved",
279
self.find_and_remove_client,
280
dbus_interface=server_interface,
283
.connect_to_signal("ClientAdded",
285
dbus_interface=server_interface,
287
for path, client in (mandos_clients.iteritems()):
288
client_proxy_object = self.bus.get_object(self.busname,
290
self.add_client(MandosClientWidget(server_proxy_object
293
=client_proxy_object,
298
=self.remove_client),
523
301
def find_and_remove_client(self, path, name):
524
"""Find a client by its object path and remove it.
302
"""Find an client from its object path and remove it.
526
304
This is connected to the ClientRemoved signal from the
527
305
Mandos server object."""