/mandos/release

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First version of a somewhat complete D-Bus server interface.  Also
change user/group name to "_mandos".

* debian/mandos.postinst: Rename old "mandos" user and group to
                          "_mandos"; create "_mandos" user and group
                          if none exist.
* debian/mandos-client.postinst: - '' -

* initramfs-tools-hook: Try "_mandos" before "mandos" as user and
                        group name.

* mandos (_datetime_to_dbus_struct): New; was previously local.
  (Client.started): Renamed to "last_started".  All users changed.
  (Client.started): New; boolean.
  (Client.dbus_object_path): New.
  (Client.check_command): Renamed to "checker_command".  All users
                          changed.
  (Client.__init__): Set and use "self.dbus_object_path".  Set
                     "self.started".
  (Client.start): Update "self.started".  Emit "self.PropertyChanged"
                  signals for both "started" and "last_started".
  (Client.stop): Update "self.started".  Emit "self.PropertyChanged"
                 signal for "started".
  (Client.checker_callback): Take additional "command" argument.  All
                             callers changed. Emit
                             "self.PropertyChanged" signal.
  (Client.bump_timeout): Emit "self.PropertyChanged" signal for
                         "last_checked_ok".
  (Client.start_checker): Emit "self.PropertyChanged" signal for
                          "checker_running".
  (Client.stop_checker): Emit "self.PropertyChanged" signal for
                         "checker_running".
  (Client.still_valid): Bug fix: use "getattr(self, started, False)"
                        instead of "self.started" in case this client
                        object is so new that the "started" attribute
                        has not been created yet.
  (Client.IntervalChanged, Client.CheckerIsRunning, Client.GetChecker,
  Client.GetCreated, Client.GetFingerprint, Client.GetHost,
  Client.GetInterval, Client.GetName, Client.GetStarted,
  Client.GetTimeout, Client.StateChanged, Client.TimeoutChanged):
  Removed; all callers changed.
  (Client.CheckerCompleted): Add "condition" and "command" arguments.
                             All callers changed.
  (Client.GetAllProperties, Client.PropertyChanged): New.
  (Client.StillValid): Renamed to "IsStillValid".
  (Client.StartChecker): Changed to its own function to avoid the
                         return value from "Client.start_checker()".
  (Client.Stop): Changed to its own function to avoid the return value
                 from "Client.stop()".
  (main): Try "_mandos" before "mandos" as user and group name.
          Removed inner function "remove_from_clients".  New inner
          class "MandosServer".

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Lines of Context:
mandos-ctl
1
 
#!/usr/bin/python
2
 
# -*- mode: python; coding: utf-8 -*-
3
 
# 
4
 
# Mandos Monitor - Control and monitor the Mandos server
5
 
# 
6
 
# Copyright © 2008-2010 Teddy Hogeborn
7
 
# Copyright © 2008-2010 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 <http://www.gnu.org/licenses/>.
21
 
# 
22
 
# Contact the authors at <mandos@fukt.bsnet.se>.
23
 
# 
24
 
 
25
 
from __future__ import division
26
 
import sys
27
 
import dbus
28
 
from optparse import OptionParser
29
 
import locale
30
 
import datetime
31
 
import re
32
 
import os
33
 
 
34
 
locale.setlocale(locale.LC_ALL, u'')
35
 
 
36
 
tablewords = {
37
 
    'Name': u'Name',
38
 
    'Enabled': u'Enabled',
39
 
    'Timeout': u'Timeout',
40
 
    'LastCheckedOK': u'Last Successful Check',
41
 
    'LastApprovalRequest': u'Last Approval Request',
42
 
    'Created': u'Created',
43
 
    'Interval': u'Interval',
44
 
    'Host': u'Host',
45
 
    'Fingerprint': u'Fingerprint',
46
 
    'CheckerRunning': u'Check Is Running',
47
 
    'LastEnabled': u'Last Enabled',
48
 
    'ApprovalPending': u'Approval Is Pending',
49
 
    'ApprovedByDefault': u'Approved By Default',
50
 
    'ApprovalDelay': u"Approval Delay",
51
 
    'ApprovalDuration': u"Approval Duration",
52
 
    'Checker': u'Checker',
53
 
    }
54
 
defaultkeywords = ('Name', 'Enabled', 'Timeout', 'LastCheckedOK')
55
 
domain = 'se.bsnet.fukt'
56
 
busname = domain + '.Mandos'
57
 
server_path = '/'
58
 
server_interface = domain + '.Mandos'
59
 
client_interface = domain + '.Mandos.Client'
60
 
version = "1.2.3"
61
 
 
62
 
def timedelta_to_milliseconds(td):
63
 
    "Convert a datetime.timedelta object to milliseconds"
64
 
    return ((td.days * 24 * 60 * 60 * 1000)
65
 
            + (td.seconds * 1000)
66
 
            + (td.microseconds // 1000))
67
 
 
68
 
def milliseconds_to_string(ms):
69
 
    td = datetime.timedelta(0, 0, 0, ms)
70
 
    return (u"%(days)s%(hours)02d:%(minutes)02d:%(seconds)02d"
71
 
            % { "days": "%dT" % td.days if td.days else "",
72
 
                "hours": td.seconds // 3600,
73
 
                "minutes": (td.seconds % 3600) // 60,
74
 
                "seconds": td.seconds % 60,
75
 
                })
76
 
 
77
 
 
78
 
def string_to_delta(interval):
79
 
    """Parse a string and return a datetime.timedelta
80
 
 
81
 
    >>> string_to_delta('7d')
82
 
    datetime.timedelta(7)
83
 
    >>> string_to_delta('60s')
84
 
    datetime.timedelta(0, 60)
85
 
    >>> string_to_delta('60m')
86
 
    datetime.timedelta(0, 3600)
87
 
    >>> string_to_delta('24h')
88
 
    datetime.timedelta(1)
89
 
    >>> string_to_delta(u'1w')
90
 
    datetime.timedelta(7)
91
 
    >>> string_to_delta('5m 30s')
92
 
    datetime.timedelta(0, 330)
93
 
    """
94
 
    timevalue = datetime.timedelta(0)
95
 
    regexp = re.compile("\d+[dsmhw]")
96
 
    
97
 
    for s in regexp.findall(interval):
98
 
        try:
99
 
            suffix = unicode(s[-1])
100
 
            value = int(s[:-1])
101
 
            if suffix == u"d":
102
 
                delta = datetime.timedelta(value)
103
 
            elif suffix == u"s":
104
 
                delta = datetime.timedelta(0, value)
105
 
            elif suffix == u"m":
106
 
                delta = datetime.timedelta(0, 0, 0, 0, value)
107
 
            elif suffix == u"h":
108
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
109
 
            elif suffix == u"w":
110
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
111
 
            else:
112
 
                raise ValueError
113
 
        except (ValueError, IndexError):
114
 
            raise ValueError
115
 
        timevalue += delta
116
 
    return timevalue
117
 
 
118
 
def print_clients(clients, keywords):
119
 
    def valuetostring(value, keyword):
120
 
        if type(value) is dbus.Boolean:
121
 
            return u"Yes" if value else u"No"
122
 
        if keyword in (u"Timeout", u"Interval", u"ApprovalDelay",
123
 
                       u"ApprovalDuration"):
124
 
            return milliseconds_to_string(value)
125
 
        return unicode(value)
126
 
    
127
 
    # Create format string to print table rows
128
 
    format_string = u' '.join(u'%%-%ds' %
129
 
                              max(len(tablewords[key]),
130
 
                                  max(len(valuetostring(client[key],
131
 
                                                        key))
132
 
                                      for client in
133
 
                                      clients))
134
 
                              for key in keywords)
135
 
    # Print header line
136
 
    print format_string % tuple(tablewords[key] for key in keywords)
137
 
    for client in clients:
138
 
        print format_string % tuple(valuetostring(client[key], key)
139
 
                                    for key in keywords)
140
 
 
141
 
def has_actions(options):
142
 
    return any((options.enable,
143
 
                options.disable,
144
 
                options.bump_timeout,
145
 
                options.start_checker,
146
 
                options.stop_checker,
147
 
                options.is_enabled,
148
 
                options.remove,
149
 
                options.checker is not None,
150
 
                options.timeout is not None,
151
 
                options.interval is not None,
152
 
                options.approved_by_default is not None,
153
 
                options.approval_delay is not None,
154
 
                options.approval_duration is not None,
155
 
                options.host is not None,
156
 
                options.secret is not None,
157
 
                options.approve,
158
 
                options.deny))
159
 
        
160
 
def main():
161
 
        parser = OptionParser(version = "%%prog %s" % version)
162
 
        parser.add_option("-a", "--all", action="store_true",
163
 
                          help="Select all clients")
164
 
        parser.add_option("-v", "--verbose", action="store_true",
165
 
                          help="Print all fields")
166
 
        parser.add_option("-e", "--enable", action="store_true",
167
 
                          help="Enable client")
168
 
        parser.add_option("-d", "--disable", action="store_true",
169
 
                          help="disable client")
170
 
        parser.add_option("-b", "--bump-timeout", action="store_true",
171
 
                          help="Bump timeout for client")
172
 
        parser.add_option("--start-checker", action="store_true",
173
 
                          help="Start checker for client")
174
 
        parser.add_option("--stop-checker", action="store_true",
175
 
                          help="Stop checker for client")
176
 
        parser.add_option("-V", "--is-enabled", action="store_true",
177
 
                          help="Check if client is enabled")
178
 
        parser.add_option("-r", "--remove", action="store_true",
179
 
                          help="Remove client")
180
 
        parser.add_option("-c", "--checker", type="string",
181
 
                          help="Set checker command for client")
182
 
        parser.add_option("-t", "--timeout", type="string",
183
 
                          help="Set timeout for client")
184
 
        parser.add_option("-i", "--interval", type="string",
185
 
                          help="Set checker interval for client")
186
 
        parser.add_option("--approve-by-default", action="store_true",
187
 
                          dest=u"approved_by_default",
188
 
                          help="Set client to be approved by default")
189
 
        parser.add_option("--deny-by-default", action="store_false",
190
 
                          dest=u"approved_by_default",
191
 
                          help="Set client to be denied by default")
192
 
        parser.add_option("--approval-delay", type="string",
193
 
                          help="Set delay before client approve/deny")
194
 
        parser.add_option("--approval-duration", type="string",
195
 
                          help="Set duration of one client approval")
196
 
        parser.add_option("-H", "--host", type="string",
197
 
                          help="Set host for client")
198
 
        parser.add_option("-s", "--secret", type="string",
199
 
                          help="Set password blob (file) for client")
200
 
        parser.add_option("-A", "--approve", action="store_true",
201
 
                          help="Approve any current client request")
202
 
        parser.add_option("-D", "--deny", action="store_true",
203
 
                          help="Deny any current client request")
204
 
        options, client_names = parser.parse_args()
205
 
        
206
 
        if has_actions(options) and not client_names and not options.all:
207
 
            parser.error('Options require clients names or --all.')
208
 
        if options.verbose and has_actions(options):
209
 
            parser.error('--verbose can only be used alone or with'
210
 
                         ' --all.')
211
 
        if options.all and not has_actions(options):
212
 
            parser.error('--all requires an action.')
213
 
        
214
 
        try:
215
 
            bus = dbus.SystemBus()
216
 
            mandos_dbus_objc = bus.get_object(busname, server_path)
217
 
        except dbus.exceptions.DBusException:
218
 
            print >> sys.stderr, "Could not connect to Mandos server"
219
 
            sys.exit(1)
220
 
    
221
 
        mandos_serv = dbus.Interface(mandos_dbus_objc,
222
 
                                     dbus_interface = server_interface)
223
 
 
224
 
        #block stderr since dbus library prints to stderr
225
 
        null = os.open(os.path.devnull, os.O_RDWR)
226
 
        stderrcopy = os.dup(sys.stderr.fileno())
227
 
        os.dup2(null, sys.stderr.fileno())
228
 
        os.close(null)
229
 
        try:
230
 
            try:
231
 
                mandos_clients = mandos_serv.GetAllClientsWithProperties()
232
 
            finally:
233
 
                #restore stderr
234
 
                os.dup2(stderrcopy, sys.stderr.fileno())
235
 
                os.close(stderrcopy)
236
 
        except dbus.exceptions.DBusException, e:
237
 
            print >> sys.stderr, "Access denied: Accessing mandos server through dbus."
238
 
            sys.exit(1)
239
 
            
240
 
        # Compile dict of (clients: properties) to process
241
 
        clients={}
242
 
        
243
 
        if options.all or not client_names:
244
 
            clients = dict((bus.get_object(busname, path), properties)
245
 
                           for path, properties in
246
 
                           mandos_clients.iteritems())
247
 
        else:
248
 
            for name in client_names:
249
 
                for path, client in mandos_clients.iteritems():
250
 
                    if client['Name'] == name:
251
 
                        client_objc = bus.get_object(busname, path)
252
 
                        clients[client_objc] = client
253
 
                        break
254
 
                else:
255
 
                    print >> sys.stderr, "Client not found on server: %r" % name
256
 
                    sys.exit(1)
257
 
            
258
 
        if not has_actions(options) and clients:
259
 
            if options.verbose:
260
 
                keywords = ('Name', 'Enabled', 'Timeout',
261
 
                            'LastCheckedOK', 'Created', 'Interval',
262
 
                            'Host', 'Fingerprint', 'CheckerRunning',
263
 
                            'LastEnabled', 'ApprovalPending',
264
 
                            'ApprovedByDefault',
265
 
                            'LastApprovalRequest', 'ApprovalDelay',
266
 
                            'ApprovalDuration', 'Checker')
267
 
            else:
268
 
                keywords = defaultkeywords
269
 
            
270
 
            print_clients(clients.values(), keywords)
271
 
        else:
272
 
            # Process each client in the list by all selected options
273
 
            for client in clients:
274
 
                if options.remove:
275
 
                    mandos_serv.RemoveClient(client.__dbus_object_path__)
276
 
                if options.enable:
277
 
                    client.Enable(dbus_interface=client_interface)
278
 
                if options.disable:
279
 
                    client.Disable(dbus_interface=client_interface)
280
 
                if options.bump_timeout:
281
 
                    client.CheckedOK(dbus_interface=client_interface)
282
 
                if options.start_checker:
283
 
                    client.StartChecker(dbus_interface=client_interface)
284
 
                if options.stop_checker:
285
 
                    client.StopChecker(dbus_interface=client_interface)
286
 
                if options.is_enabled:
287
 
                    sys.exit(0 if client.Get(client_interface,
288
 
                                             u"Enabled",
289
 
                                             dbus_interface=dbus.PROPERTIES_IFACE)
290
 
                             else 1)
291
 
                if options.checker:
292
 
                    client.Set(client_interface, u"Checker", options.checker,
293
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
294
 
                if options.host:
295
 
                    client.Set(client_interface, u"Host", options.host,
296
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
297
 
                if options.interval:
298
 
                    client.Set(client_interface, u"Interval",
299
 
                               timedelta_to_milliseconds
300
 
                               (string_to_delta(options.interval)),
301
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
302
 
                if options.approval_delay:
303
 
                    client.Set(client_interface, u"ApprovalDelay",
304
 
                               timedelta_to_milliseconds
305
 
                               (string_to_delta(options.
306
 
                                                approval_delay)),
307
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
308
 
                if options.approval_duration:
309
 
                    client.Set(client_interface, u"ApprovalDuration",
310
 
                               timedelta_to_milliseconds
311
 
                               (string_to_delta(options.
312
 
                                                approval_duration)),
313
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
314
 
                if options.timeout:
315
 
                    client.Set(client_interface, u"Timeout",
316
 
                               timedelta_to_milliseconds
317
 
                               (string_to_delta(options.timeout)),
318
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
319
 
                if options.secret:
320
 
                    client.Set(client_interface, u"Secret",
321
 
                               dbus.ByteArray(open(options.secret,
322
 
                                                   u'rb').read()),
323
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
324
 
                if options.approved_by_default is not None:
325
 
                    client.Set(client_interface, u"ApprovedByDefault",
326
 
                               dbus.Boolean(options
327
 
                                            .approved_by_default),
328
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
329
 
                if options.approve:
330
 
                    client.Approve(dbus.Boolean(True),
331
 
                                   dbus_interface=client_interface)
332
 
                elif options.deny:
333
 
                    client.Approve(dbus.Boolean(False),
334
 
                                   dbus_interface=client_interface)
335
 
 
336
 
if __name__ == '__main__':
337
 
    main()