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  • Committer: Teddy Hogeborn
  • Date: 2016-08-26 18:44:21 UTC
  • Revision ID: teddy@recompile.se-20160826184421-gjqjgzxy3lupx9n3
Fix bug where mandos server could not find GnuTLS library

* mandos (GnuTLS): Try to find both "gnutls" and variant name
                   "gnutls-deb0", for a Debian Jessie system which
                   does not have the package "gnutls28-dev" installed.

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1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
 
3
#
 
4
# Mandos Monitor - Control and monitor the Mandos server
 
5
#
 
6
# Copyright © 2009-2016 Teddy Hogeborn
 
7
# Copyright © 2009-2016 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
#
3
25
 
4
 
from __future__ import division, absolute_import, with_statement
 
26
from __future__ import (division, absolute_import, print_function,
 
27
                        unicode_literals)
 
28
try:
 
29
    from future_builtins import *
 
30
except ImportError:
 
31
    pass
5
32
 
6
33
import sys
7
 
import signal
 
34
import os
 
35
 
 
36
import datetime
8
37
 
9
38
import urwid.curses_display
10
39
import urwid
11
40
 
12
41
from dbus.mainloop.glib import DBusGMainLoop
13
 
import gobject
 
42
from gi.repository import GLib
14
43
 
15
44
import dbus
16
45
 
17
 
import UserList
 
46
import locale
 
47
 
 
48
import logging
 
49
 
 
50
if sys.version_info.major == 2:
 
51
    str = unicode
 
52
 
 
53
locale.setlocale(locale.LC_ALL, '')
 
54
 
 
55
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
18
56
 
19
57
# Some useful constants
20
 
domain = 'se.bsnet.fukt'
 
58
domain = 'se.recompile'
21
59
server_interface = domain + '.Mandos'
22
60
client_interface = domain + '.Mandos.Client'
23
 
version = "1.0.14"
24
 
 
25
 
# Always run in monochrome mode
26
 
urwid.curses_display.curses.has_colors = lambda : False
27
 
 
28
 
# Urwid doesn't support blinking, but we want it.  Since we have no
29
 
# use for underline on its own, we make underline also always blink.
30
 
urwid.curses_display.curses.A_UNDERLINE |= (
31
 
    urwid.curses_display.curses.A_BLINK)
 
61
version = "1.7.10"
 
62
 
 
63
try:
 
64
    dbus.OBJECT_MANAGER_IFACE
 
65
except AttributeError:
 
66
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
67
 
 
68
 
 
69
def isoformat_to_datetime(iso):
 
70
    "Parse an ISO 8601 date string to a datetime.datetime()"
 
71
    if not iso:
 
72
        return None
 
73
    d, t = iso.split("T", 1)
 
74
    year, month, day = d.split("-", 2)
 
75
    hour, minute, second = t.split(":", 2)
 
76
    second, fraction = divmod(float(second), 1)
 
77
    return datetime.datetime(int(year),
 
78
                             int(month),
 
79
                             int(day),
 
80
                             int(hour),
 
81
                             int(minute),
 
82
                             int(second),            # Whole seconds
 
83
                             int(fraction*1000000))  # Microseconds
 
84
 
32
85
 
33
86
class MandosClientPropertyCache(object):
34
87
    """This wraps a Mandos Client D-Bus proxy object, caches the
35
88
    properties and calls a hook function when any of them are
36
89
    changed.
37
90
    """
38
 
    def __init__(self, proxy_object=None, properties=None, *args,
39
 
                 **kwargs):
40
 
        # Type conversion mapping
41
 
        self.type_map = {
42
 
            dbus.ObjectPath: unicode,
43
 
            dbus.ByteArray: str,
44
 
            dbus.Signature: unicode,
45
 
            dbus.Byte: chr,
46
 
            dbus.Int16: int,
47
 
            dbus.UInt16: int,
48
 
            dbus.Int32: int,
49
 
            dbus.UInt32: int,
50
 
            dbus.Int64: int,
51
 
            dbus.UInt64: int,
52
 
            dbus.Dictionary: dict,
53
 
            dbus.Array: list,
54
 
            dbus.String: unicode,
55
 
            dbus.Boolean: bool,
56
 
            dbus.Double: float,
57
 
            dbus.Struct: tuple,
58
 
            }
59
 
        self.proxy = proxy_object # Mandos Client proxy object
60
 
        
61
 
        if properties is None:
62
 
            self.properties = dict()
63
 
        else:
64
 
            self.properties = dict(self.convert_property(prop, val)
65
 
                                   for prop, val in
66
 
                                   properties.iteritems())
67
 
        self.proxy.connect_to_signal("PropertyChanged",
68
 
                                     self.property_changed,
69
 
                                     client_interface,
70
 
                                     byte_arrays=True)
71
 
        
72
 
        if properties is None:
73
 
            self.properties.update(
74
 
                self.convert_property(prop, val)
75
 
                for prop, val in
76
 
                self.proxy.GetAll(client_interface,
77
 
                                  dbus_interface =
78
 
                                  dbus.PROPERTIES_IFACE).iteritems())
79
 
        super(MandosClientPropertyCache, self).__init__(
80
 
            proxy_object=proxy_object,
81
 
            properties=properties, *args, **kwargs)
82
 
    
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".
87
 
        """
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"))
92
 
        try:
93
 
            convfunc = self.type_map[type(value)]
94
 
        except KeyError:
95
 
            # Unknown type, return unmodified
96
 
            return property_name, value
97
 
        return property_name, convfunc(value)
98
 
    def property_changed(self, property=None, value=None):
99
 
        """This is called whenever we get a PropertyChanged signal
100
 
        It updates the changed property in the "properties" dict.
101
 
        """
102
 
        # Convert name and value
103
 
        property_name, cvalue = self.convert_property(property, value)
 
91
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
92
        self.proxy = proxy_object  # Mandos Client proxy object
 
93
        self.properties = dict() if properties is None else properties
 
94
        self.property_changed_match = (
 
95
            self.proxy.connect_to_signal("PropertiesChanged",
 
96
                                         self.properties_changed,
 
97
                                         dbus.PROPERTIES_IFACE,
 
98
                                         byte_arrays=True))
 
99
 
 
100
        if properties is None:
 
101
            self.properties.update(self.proxy.GetAll(
 
102
                client_interface,
 
103
                dbus_interface=dbus.PROPERTIES_IFACE))
 
104
 
 
105
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
106
 
 
107
    def properties_changed(self, interface, properties, invalidated):
 
108
        """This is called whenever we get a PropertiesChanged signal
 
109
        It updates the changed properties in the "properties" dict.
 
110
        """
104
111
        # Update properties dict with new value
105
 
        self.properties[property_name] = cvalue
 
112
        if interface == client_interface:
 
113
            self.properties.update(properties)
 
114
 
 
115
    def delete(self):
 
116
        self.property_changed_match.remove()
106
117
 
107
118
 
108
119
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
109
120
    """A Mandos Client which is visible on the screen.
110
121
    """
111
 
    
 
122
 
112
123
    def __init__(self, server_proxy_object=None, update_hook=None,
113
 
                 delete_hook=None, *args, **kwargs):
 
124
                 delete_hook=None, logger=None, **kwargs):
114
125
        # Called on update
115
126
        self.update_hook = update_hook
116
127
        # Called on delete
117
128
        self.delete_hook = delete_hook
118
129
        # Mandos Server proxy object
119
130
        self.server_proxy_object = server_proxy_object
120
 
        
 
131
        # Logger
 
132
        self.logger = logger
 
133
 
 
134
        self._update_timer_callback_tag = None
 
135
 
121
136
        # The widget shown normally
122
137
        self._text_widget = urwid.Text("")
123
138
        # The widget shown when we have focus
124
139
        self._focus_text_widget = urwid.Text("")
125
 
        super(MandosClientWidget, self).__init__(
126
 
            update_hook=update_hook, delete_hook=delete_hook,
127
 
            *args, **kwargs)
 
140
        super(MandosClientWidget, self).__init__(**kwargs)
128
141
        self.update()
129
142
        self.opened = False
130
 
    
 
143
 
 
144
        self.match_objects = (
 
145
            self.proxy.connect_to_signal("CheckerCompleted",
 
146
                                         self.checker_completed,
 
147
                                         client_interface,
 
148
                                         byte_arrays=True),
 
149
            self.proxy.connect_to_signal("CheckerStarted",
 
150
                                         self.checker_started,
 
151
                                         client_interface,
 
152
                                         byte_arrays=True),
 
153
            self.proxy.connect_to_signal("GotSecret",
 
154
                                         self.got_secret,
 
155
                                         client_interface,
 
156
                                         byte_arrays=True),
 
157
            self.proxy.connect_to_signal("NeedApproval",
 
158
                                         self.need_approval,
 
159
                                         client_interface,
 
160
                                         byte_arrays=True),
 
161
            self.proxy.connect_to_signal("Rejected",
 
162
                                         self.rejected,
 
163
                                         client_interface,
 
164
                                         byte_arrays=True))
 
165
        self.logger('Created client {}'
 
166
                    .format(self.properties["Name"]), level=0)
 
167
 
 
168
    def using_timer(self, flag):
 
169
        """Call this method with True or False when timer should be
 
170
        activated or deactivated.
 
171
        """
 
172
        if flag and self._update_timer_callback_tag is None:
 
173
            # Will update the shown timer value every second
 
174
            self._update_timer_callback_tag = (GLib.timeout_add
 
175
                                               (1000,
 
176
                                                self.update_timer))
 
177
        elif not (flag or self._update_timer_callback_tag is None):
 
178
            GLib.source_remove(self._update_timer_callback_tag)
 
179
            self._update_timer_callback_tag = None
 
180
 
 
181
    def checker_completed(self, exitstatus, condition, command):
 
182
        if exitstatus == 0:
 
183
            self.logger('Checker for client {} (command "{}")'
 
184
                        ' succeeded'.format(self.properties["Name"],
 
185
                                            command), level=0)
 
186
            self.update()
 
187
            return
 
188
        # Checker failed
 
189
        if os.WIFEXITED(condition):
 
190
            self.logger('Checker for client {} (command "{}") failed'
 
191
                        ' with exit code {}'
 
192
                        .format(self.properties["Name"], command,
 
193
                                os.WEXITSTATUS(condition)))
 
194
        elif os.WIFSIGNALED(condition):
 
195
            self.logger('Checker for client {} (command "{}") was'
 
196
                        ' killed by signal {}'
 
197
                        .format(self.properties["Name"], command,
 
198
                                os.WTERMSIG(condition)))
 
199
        self.update()
 
200
 
 
201
    def checker_started(self, command):
 
202
        """Server signals that a checker started."""
 
203
        self.logger('Client {} started checker "{}"'
 
204
                    .format(self.properties["Name"],
 
205
                            command), level=0)
 
206
 
 
207
    def got_secret(self):
 
208
        self.logger('Client {} received its secret'
 
209
                    .format(self.properties["Name"]))
 
210
 
 
211
    def need_approval(self, timeout, default):
 
212
        if not default:
 
213
            message = 'Client {} needs approval within {} seconds'
 
214
        else:
 
215
            message = 'Client {} will get its secret in {} seconds'
 
216
        self.logger(message.format(self.properties["Name"],
 
217
                                   timeout/1000))
 
218
 
 
219
    def rejected(self, reason):
 
220
        self.logger('Client {} was rejected; reason: {}'
 
221
                    .format(self.properties["Name"], reason))
 
222
 
131
223
    def selectable(self):
132
224
        """Make this a "selectable" widget.
133
225
        This overrides the method from urwid.FlowWidget."""
134
226
        return True
135
 
    
136
 
    def rows(self, (maxcol,), focus=False):
 
227
 
 
228
    def rows(self, maxcolrow, focus=False):
137
229
        """How many rows this widget will occupy might depend on
138
230
        whether we have focus or not.
139
231
        This overrides the method from urwid.FlowWidget"""
140
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
141
 
    
 
232
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
233
 
142
234
    def current_widget(self, focus=False):
143
235
        if focus or self.opened:
144
236
            return self._focus_widget
145
237
        return self._widget
146
 
    
 
238
 
147
239
    def update(self):
148
240
        "Called when what is visible on the screen should be updated."
149
241
        # How to add standout mode to a style
150
 
        with_standout = { u"normal": u"standout",
151
 
                          u"bold": u"bold-standout",
152
 
                          u"underline-blink":
153
 
                              u"underline-blink-standout",
154
 
                          u"bold-underline-blink":
155
 
                              u"bold-underline-blink-standout",
156
 
                          }
157
 
        
 
242
        with_standout = {"normal": "standout",
 
243
                         "bold": "bold-standout",
 
244
                         "underline-blink":
 
245
                         "underline-blink-standout",
 
246
                         "bold-underline-blink":
 
247
                         "bold-underline-blink-standout",
 
248
                         }
 
249
 
158
250
        # Rebuild focus and non-focus widgets using current properties
159
 
        self._text = (u'name="%(name)s", enabled=%(enabled)s'
160
 
                      % self.properties)
 
251
 
 
252
        # Base part of a client. Name!
 
253
        base = '{name}: '.format(name=self.properties["Name"])
 
254
        if not self.properties["Enabled"]:
 
255
            message = "DISABLED"
 
256
            self.using_timer(False)
 
257
        elif self.properties["ApprovalPending"]:
 
258
            timeout = datetime.timedelta(
 
259
                milliseconds=self.properties["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
 
161
293
        if not urwid.supports_unicode():
162
294
            self._text = self._text.encode("ascii", "replace")
163
 
        textlist = [(u"normal", u"BLÄRGH: "), (u"bold", self._text)]
 
295
        textlist = [("normal", self._text)]
164
296
        self._text_widget.set_text(textlist)
165
297
        self._focus_text_widget.set_text([(with_standout[text[0]],
166
298
                                           text[1])
173
305
        # Run update hook, if any
174
306
        if self.update_hook is not None:
175
307
            self.update_hook()
176
 
    
177
 
    def delete(self):
 
308
 
 
309
    def update_timer(self):
 
310
        """called by GLib. Will indefinitely loop until
 
311
        GLib.source_remove() on tag is called
 
312
        """
 
313
        self.update()
 
314
        return True             # Keep calling this
 
315
 
 
316
    def delete(self, **kwargs):
 
317
        if self._update_timer_callback_tag is not None:
 
318
            GLib.source_remove(self._update_timer_callback_tag)
 
319
            self._update_timer_callback_tag = None
 
320
        for match in self.match_objects:
 
321
            match.remove()
 
322
        self.match_objects = ()
178
323
        if self.delete_hook is not None:
179
324
            self.delete_hook(self)
180
 
    
181
 
    def render(self, (maxcol,), focus=False):
 
325
        return super(MandosClientWidget, self).delete(**kwargs)
 
326
 
 
327
    def render(self, maxcolrow, focus=False):
182
328
        """Render differently if we have focus.
183
329
        This overrides the method from urwid.FlowWidget"""
184
 
        return self.current_widget(focus).render((maxcol,),
 
330
        return self.current_widget(focus).render(maxcolrow,
185
331
                                                 focus=focus)
186
 
    
187
 
    def keypress(self, (maxcol,), key):
 
332
 
 
333
    def keypress(self, maxcolrow, key):
188
334
        """Handle keys.
189
335
        This overrides the method from urwid.FlowWidget"""
190
 
        if key == u"e" or key == u"+":
191
 
            self.proxy.Enable()
192
 
        elif key == u"d" or key == u"-":
193
 
            self.proxy.Disable()
194
 
        elif key == u"r" or key == u"_":
 
336
        if key == "+":
 
337
            self.proxy.Set(client_interface, "Enabled",
 
338
                           dbus.Boolean(True), ignore_reply=True,
 
339
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
340
        elif key == "-":
 
341
            self.proxy.Set(client_interface, "Enabled", False,
 
342
                           ignore_reply=True,
 
343
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
344
        elif key == "a":
 
345
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
 
346
                               dbus_interface=client_interface,
 
347
                               ignore_reply=True)
 
348
        elif key == "d":
 
349
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
 
350
                               dbus_interface=client_interface,
 
351
                               ignore_reply=True)
 
352
        elif key == "R" or key == "_" or key == "ctrl k":
195
353
            self.server_proxy_object.RemoveClient(self.proxy
196
 
                                                  .object_path)
197
 
        elif key == u"s":
198
 
            self.proxy.StartChecker()
199
 
        elif key == u"c":
200
 
            self.proxy.StopChecker()
201
 
        elif key == u"S":
202
 
            self.proxy.CheckedOK()
 
354
                                                  .object_path,
 
355
                                                  ignore_reply=True)
 
356
        elif key == "s":
 
357
            self.proxy.Set(client_interface, "CheckerRunning",
 
358
                           dbus.Boolean(True), ignore_reply=True,
 
359
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
360
        elif key == "S":
 
361
            self.proxy.Set(client_interface, "CheckerRunning",
 
362
                           dbus.Boolean(False), ignore_reply=True,
 
363
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
364
        elif key == "C":
 
365
            self.proxy.CheckedOK(dbus_interface=client_interface,
 
366
                                 ignore_reply=True)
203
367
        # xxx
204
 
#         elif key == u"p" or key == "=":
 
368
#         elif key == "p" or key == "=":
205
369
#             self.proxy.pause()
206
 
#         elif key == u"u" or key == ":":
 
370
#         elif key == "u" or key == ":":
207
371
#             self.proxy.unpause()
208
 
#         elif key == u"RET":
 
372
#         elif key == "RET":
209
373
#             self.open()
210
374
        else:
211
375
            return key
212
 
    
213
 
    def property_changed(self, property=None, value=None,
214
 
                         *args, **kwargs):
215
 
        """Call self.update() if old value is not new value.
 
376
 
 
377
    def properties_changed(self, interface, properties, invalidated):
 
378
        """Call self.update() if any properties changed.
216
379
        This overrides the method from MandosClientPropertyCache"""
217
 
        property_name = unicode(property)
218
 
        old_value = self.properties.get(property_name)
219
 
        super(MandosClientWidget, self).property_changed(
220
 
            property=property, value=value, *args, **kwargs)
221
 
        if self.properties.get(property_name) != old_value:
 
380
        old_values = {key: self.properties.get(key)
 
381
                      for key in properties.keys()}
 
382
        super(MandosClientWidget, self).properties_changed(
 
383
            interface, properties, invalidated)
 
384
        if any(old_values[key] != self.properties.get(key)
 
385
               for key in old_values):
222
386
            self.update()
223
387
 
224
388
 
 
389
class ConstrainedListBox(urwid.ListBox):
 
390
    """Like a normal urwid.ListBox, but will consume all "up" or
 
391
    "down" key presses, thus not allowing any containing widgets to
 
392
    use them as an excuse to shift focus away from this widget.
 
393
    """
 
394
    def keypress(self, *args, **kwargs):
 
395
        ret = (super(ConstrainedListBox, self)
 
396
               .keypress(*args, **kwargs))
 
397
        if ret in ("up", "down"):
 
398
            return
 
399
        return ret
 
400
 
 
401
 
225
402
class UserInterface(object):
226
403
    """This is the entire user interface - the whole screen
227
404
    with boxes, lists of client widgets, etc.
228
405
    """
229
 
    def __init__(self):
230
 
        DBusGMainLoop(set_as_default=True )
231
 
        
 
406
    def __init__(self, max_log_length=1000, log_level=1):
 
407
        DBusGMainLoop(set_as_default=True)
 
408
 
232
409
        self.screen = urwid.curses_display.Screen()
233
 
        
 
410
 
234
411
        self.screen.register_palette((
235
 
                (u"normal",
236
 
                 u"default", u"default", None),
237
 
                (u"bold",
238
 
                 u"default", u"default", u"bold"),
239
 
                (u"underline-blink",
240
 
                 u"default", u"default", u"underline"),
241
 
                (u"standout",
242
 
                 u"default", u"default", u"standout"),
243
 
                (u"bold-underline-blink",
244
 
                 u"default", u"default", (u"bold", u"underline")),
245
 
                (u"bold-standout",
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",
251
 
                                          u"standout")),
 
412
                ("normal",
 
413
                 "default", "default", None),
 
414
                ("bold",
 
415
                 "bold", "default", "bold"),
 
416
                ("underline-blink",
 
417
                 "underline,blink", "default", "underline,blink"),
 
418
                ("standout",
 
419
                 "standout", "default", "standout"),
 
420
                ("bold-underline-blink",
 
421
                 "bold,underline,blink", "default",
 
422
                 "bold,underline,blink"),
 
423
                ("bold-standout",
 
424
                 "bold,standout", "default", "bold,standout"),
 
425
                ("underline-blink-standout",
 
426
                 "underline,blink,standout", "default",
 
427
                 "underline,blink,standout"),
 
428
                ("bold-underline-blink-standout",
 
429
                 "bold,underline,blink,standout", "default",
 
430
                 "bold,underline,blink,standout"),
252
431
                ))
253
 
        
 
432
 
 
433
        if urwid.supports_unicode():
 
434
            self.divider = "─"  # \u2500
 
435
        else:
 
436
            self.divider = "_"  # \u005f
 
437
 
254
438
        self.screen.start()
255
 
        
 
439
 
256
440
        self.size = self.screen.get_cols_rows()
257
 
        
 
441
 
258
442
        self.clients = urwid.SimpleListWalker([])
259
443
        self.clients_dict = {}
260
 
        self.topwidget = urwid.LineBox(urwid.ListBox(self.clients))
261
 
        #self.topwidget = urwid.ListBox(clients)
262
 
        
 
444
 
 
445
        # We will add Text widgets to this list
 
446
        self.log = []
 
447
        self.max_log_length = max_log_length
 
448
 
 
449
        self.log_level = log_level
 
450
 
 
451
        # We keep a reference to the log widget so we can remove it
 
452
        # from the ListWalker without it getting destroyed
 
453
        self.logbox = ConstrainedListBox(self.log)
 
454
 
 
455
        # This keeps track of whether self.uilist currently has
 
456
        # self.logbox in it or not
 
457
        self.log_visible = True
 
458
        self.log_wrap = "any"
 
459
 
 
460
        self.rebuild()
 
461
        self.log_message_raw(("bold",
 
462
                              "Mandos Monitor version " + version))
 
463
        self.log_message_raw(("bold",
 
464
                              "q: Quit  ?: Help"))
 
465
 
263
466
        self.busname = domain + '.Mandos'
264
 
        self.main_loop = gobject.MainLoop()
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,
269
 
                                          dbus_interface
270
 
                                          = server_interface)
271
 
        try:
272
 
            mandos_clients = (self.mandos_serv
273
 
                              .GetAllClientsWithProperties())
274
 
        except dbus.exceptions.DBusException:
275
 
            mandos_clients = dbus.Dictionary()
276
 
        
277
 
        (self.mandos_serv
278
 
         .connect_to_signal("ClientRemoved",
279
 
                            self.find_and_remove_client,
280
 
                            dbus_interface=server_interface,
281
 
                            byte_arrays=True))
282
 
        (self.mandos_serv
283
 
         .connect_to_signal("ClientAdded",
284
 
                            self.add_new_client,
285
 
                            dbus_interface=server_interface,
286
 
                            byte_arrays=True))
287
 
        for path, client in (mandos_clients.iteritems()):
288
 
            client_proxy_object = self.bus.get_object(self.busname,
289
 
                                                      path)
290
 
            self.add_client(MandosClientWidget(server_proxy_object
291
 
                                               =self.mandos_serv,
292
 
                                               proxy_object
293
 
                                               =client_proxy_object,
294
 
                                               properties=client,
295
 
                                               update_hook
296
 
                                               =self.refresh,
297
 
                                               delete_hook
298
 
                                               =self.remove_client),
299
 
                            path=path)
300
 
    
301
 
    def find_and_remove_client(self, path, name):
302
 
        """Find an client from its object path and remove it.
303
 
        
304
 
        This is connected to the ClientRemoved signal from the
 
467
        self.main_loop = GLib.MainLoop()
 
468
 
 
469
    def client_not_found(self, fingerprint, address):
 
470
        self.log_message("Client with address {} and fingerprint {}"
 
471
                         " could not be found"
 
472
                         .format(address, fingerprint))
 
473
 
 
474
    def rebuild(self):
 
475
        """This rebuilds the User Interface.
 
476
        Call this when the widget layout needs to change"""
 
477
        self.uilist = []
 
478
        # self.uilist.append(urwid.ListBox(self.clients))
 
479
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
480
                                                          clients),
 
481
                                       # header=urwid.Divider(),
 
482
                                       header=None,
 
483
                                       footer=urwid.Divider(
 
484
                                           div_char=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
            if 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, interfaces):
 
529
        """Find a client by its object path and remove it.
 
530
 
 
531
        This is connected to the InterfacesRemoved signal from the
305
532
        Mandos server object."""
 
533
        if client_interface not in interfaces:
 
534
            # Not a Mandos client object; ignore
 
535
            return
306
536
        try:
307
537
            client = self.clients_dict[path]
308
538
        except KeyError:
309
539
            # not found?
310
 
            return
311
 
        self.remove_client(client, path)
312
 
    
313
 
    def add_new_client(self, path, properties):
 
540
            self.log_message("Unknown client {!r} removed"
 
541
                             .format(path))
 
542
            return
 
543
        client.delete()
 
544
 
 
545
    def add_new_client(self, path, ifs_and_props):
 
546
        """Find a client by its object path and remove it.
 
547
 
 
548
        This is connected to the InterfacesAdded signal from the
 
549
        Mandos server object.
 
550
        """
 
551
        if client_interface not in ifs_and_props:
 
552
            # Not a Mandos client object; ignore
 
553
            return
314
554
        client_proxy_object = self.bus.get_object(self.busname, path)
315
 
        self.add_client(MandosClientWidget(server_proxy_object
316
 
                                           =self.mandos_serv,
317
 
                                           proxy_object
318
 
                                           =client_proxy_object,
319
 
                                           properties=properties,
320
 
                                           update_hook
321
 
                                           =self.refresh,
322
 
                                           delete_hook
323
 
                                           =self.remove_client),
 
555
        self.add_client(MandosClientWidget(
 
556
            server_proxy_object=self.mandos_serv,
 
557
            proxy_object=client_proxy_object,
 
558
            update_hook=self.refresh,
 
559
            delete_hook=self.remove_client,
 
560
            logger=self.log_message,
 
561
            properties=dict(ifs_and_props[client_interface])),
324
562
                        path=path)
325
 
    
 
563
 
326
564
    def add_client(self, client, path=None):
327
565
        self.clients.append(client)
328
566
        if path is None:
329
567
            path = client.proxy.object_path
330
568
        self.clients_dict[path] = client
331
 
        self.clients.sort(None, lambda c: c.properties[u"name"])
 
569
        self.clients.sort(key=lambda c: c.properties["Name"])
332
570
        self.refresh()
333
 
    
 
571
 
334
572
    def remove_client(self, client, path=None):
335
573
        self.clients.remove(client)
336
574
        if path is None:
337
575
            path = client.proxy.object_path
338
576
        del self.clients_dict[path]
339
577
        self.refresh()
340
 
    
 
578
 
341
579
    def refresh(self):
342
580
        """Redraw the screen"""
343
581
        canvas = self.topwidget.render(self.size, focus=True)
344
582
        self.screen.draw_screen(self.size, canvas)
345
 
    
 
583
 
346
584
    def run(self):
347
585
        """Start the main loop and exit when it's done."""
 
586
        self.bus = dbus.SystemBus()
 
587
        mandos_dbus_objc = self.bus.get_object(
 
588
            self.busname, "/", follow_name_owner_changes=True)
 
589
        self.mandos_serv = dbus.Interface(
 
590
            mandos_dbus_objc, dbus_interface=server_interface)
 
591
        try:
 
592
            mandos_clients = (self.mandos_serv
 
593
                              .GetAllClientsWithProperties())
 
594
            if not mandos_clients:
 
595
                self.log_message_raw(("bold",
 
596
                                      "Note: Server has no clients."))
 
597
        except dbus.exceptions.DBusException:
 
598
            self.log_message_raw(("bold",
 
599
                                  "Note: No Mandos server running."))
 
600
            mandos_clients = dbus.Dictionary()
 
601
 
 
602
        (self.mandos_serv
 
603
         .connect_to_signal("InterfacesRemoved",
 
604
                            self.find_and_remove_client,
 
605
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
606
                            byte_arrays=True))
 
607
        (self.mandos_serv
 
608
         .connect_to_signal("InterfacesAdded",
 
609
                            self.add_new_client,
 
610
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
611
                            byte_arrays=True))
 
612
        (self.mandos_serv
 
613
         .connect_to_signal("ClientNotFound",
 
614
                            self.client_not_found,
 
615
                            dbus_interface=server_interface,
 
616
                            byte_arrays=True))
 
617
        for path, client in mandos_clients.items():
 
618
            client_proxy_object = self.bus.get_object(self.busname,
 
619
                                                      path)
 
620
            self.add_client(MandosClientWidget(
 
621
                server_proxy_object=self.mandos_serv,
 
622
                proxy_object=client_proxy_object,
 
623
                properties=client,
 
624
                update_hook=self.refresh,
 
625
                delete_hook=self.remove_client,
 
626
                logger=self.log_message),
 
627
                            path=path)
 
628
 
348
629
        self.refresh()
349
 
        self._input_callback_tag = (gobject.io_add_watch
 
630
        self._input_callback_tag = (GLib.io_add_watch
350
631
                                    (sys.stdin.fileno(),
351
 
                                     gobject.IO_IN,
 
632
                                     GLib.IO_IN,
352
633
                                     self.process_input))
353
634
        self.main_loop.run()
354
635
        # Main loop has finished, we should close everything now
355
 
        gobject.source_remove(self._input_callback_tag)
 
636
        GLib.source_remove(self._input_callback_tag)
356
637
        self.screen.stop()
357
 
    
 
638
 
358
639
    def stop(self):
359
640
        self.main_loop.quit()
360
 
    
 
641
 
361
642
    def process_input(self, source, condition):
362
643
        keys = self.screen.get_input()
363
 
        translations = { u"j": u"down",
364
 
                         u"k": u"up",
365
 
                         }
 
644
        translations = {"ctrl n": "down",       # Emacs
 
645
                        "ctrl p": "up",         # Emacs
 
646
                        "ctrl v": "page down",  # Emacs
 
647
                        "meta v": "page up",    # Emacs
 
648
                        " ": "page down",       # less
 
649
                        "f": "page down",       # less
 
650
                        "b": "page up",         # less
 
651
                        "j": "down",            # vi
 
652
                        "k": "up",              # vi
 
653
                        }
366
654
        for key in keys:
367
655
            try:
368
656
                key = translations[key]
369
657
            except KeyError:    # :-)
370
658
                pass
371
 
            
372
 
            if key == u"q" or key == u"Q":
 
659
 
 
660
            if key == "q" or key == "Q":
373
661
                self.stop()
374
662
                break
375
 
            elif key == u"window resize":
 
663
            elif key == "window resize":
376
664
                self.size = self.screen.get_cols_rows()
377
665
                self.refresh()
378
 
            elif key == " ":
379
 
                self.refresh()
 
666
            elif key == "ctrl l":
 
667
                self.screen.clear()
 
668
                self.refresh()
 
669
            elif key == "l" or key == "D":
 
670
                self.toggle_log_display()
 
671
                self.refresh()
 
672
            elif key == "w" or key == "i":
 
673
                self.change_log_display()
 
674
                self.refresh()
 
675
            elif key == "?" or key == "f1" or key == "esc":
 
676
                if not self.log_visible:
 
677
                    self.log_visible = True
 
678
                    self.rebuild()
 
679
                self.log_message_raw(("bold",
 
680
                                      "  ".
 
681
                                      join(("q: Quit",
 
682
                                            "?: Help",
 
683
                                            "l: Log window toggle",
 
684
                                            "TAB: Switch window",
 
685
                                            "w: Wrap (log lines)",
 
686
                                            "v: Toggle verbose log",
 
687
                                            ))))
 
688
                self.log_message_raw(("bold",
 
689
                                      "  "
 
690
                                      .join(("Clients:",
 
691
                                             "+: Enable",
 
692
                                             "-: Disable",
 
693
                                             "R: Remove",
 
694
                                             "s: Start new checker",
 
695
                                             "S: Stop checker",
 
696
                                             "C: Checker OK",
 
697
                                             "a: Approve",
 
698
                                             "d: Deny"))))
 
699
                self.refresh()
 
700
            elif key == "tab":
 
701
                if self.topwidget.get_focus() is self.logbox:
 
702
                    self.topwidget.set_focus(0)
 
703
                else:
 
704
                    self.topwidget.set_focus(self.logbox)
 
705
                self.refresh()
 
706
            elif key == "v":
 
707
                if self.log_level == 0:
 
708
                    self.log_level = 1
 
709
                    self.log_message("Verbose mode: Off")
 
710
                else:
 
711
                    self.log_level = 0
 
712
                    self.log_message("Verbose mode: On")
 
713
            # elif (key == "end" or key == "meta >" or key == "G"
 
714
            #       or key == ">"):
 
715
            #     pass            # xxx end-of-buffer
 
716
            # elif (key == "home" or key == "meta <" or key == "g"
 
717
            #       or key == "<"):
 
718
            #     pass            # xxx beginning-of-buffer
 
719
            # elif key == "ctrl e" or key == "$":
 
720
            #     pass            # xxx move-end-of-line
 
721
            # elif key == "ctrl a" or key == "^":
 
722
            #     pass            # xxx move-beginning-of-line
 
723
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
724
            #     pass            # xxx left
 
725
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
726
            #     pass            # xxx right
 
727
            # elif key == "a":
 
728
            #     pass            # scroll up log
 
729
            # elif key == "z":
 
730
            #     pass            # scroll down log
380
731
            elif self.topwidget.selectable():
381
732
                self.topwidget.keypress(self.size, key)
382
733
                self.refresh()
385
736
ui = UserInterface()
386
737
try:
387
738
    ui.run()
388
 
except:
 
739
except KeyboardInterrupt:
 
740
    ui.screen.stop()
 
741
except Exception as e:
 
742
    ui.log_message(str(e))
389
743
    ui.screen.stop()
390
744
    raise