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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 © 2008-2012 Teddy Hogeborn
 
7
# Copyright © 2008-2012 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@recompile.se>.
 
23
# 
 
24
 
 
25
from __future__ import (division, absolute_import, print_function,
 
26
                        unicode_literals)
 
27
 
 
28
import sys
 
29
import dbus
 
30
import argparse
 
31
import locale
 
32
import datetime
 
33
import re
 
34
import os
 
35
 
 
36
locale.setlocale(locale.LC_ALL, "")
 
37
 
 
38
tablewords = {
 
39
    "Name": "Name",
 
40
    "Enabled": "Enabled",
 
41
    "Timeout": "Timeout",
 
42
    "LastCheckedOK": "Last Successful Check",
 
43
    "LastApprovalRequest": "Last Approval Request",
 
44
    "Created": "Created",
 
45
    "Interval": "Interval",
 
46
    "Host": "Host",
 
47
    "Fingerprint": "Fingerprint",
 
48
    "CheckerRunning": "Check Is Running",
 
49
    "LastEnabled": "Last Enabled",
 
50
    "ApprovalPending": "Approval Is Pending",
 
51
    "ApprovedByDefault": "Approved By Default",
 
52
    "ApprovalDelay": "Approval Delay",
 
53
    "ApprovalDuration": "Approval Duration",
 
54
    "Checker": "Checker",
 
55
    "ExtendedTimeout" : "Extended Timeout"
 
56
    }
 
57
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
 
58
domain = "se.recompile"
 
59
busname = domain + ".Mandos"
 
60
server_path = "/"
 
61
server_interface = domain + ".Mandos"
 
62
client_interface = domain + ".Mandos.Client"
 
63
version = "1.4.1"
 
64
 
 
65
def timedelta_to_milliseconds(td):
 
66
    """Convert a datetime.timedelta object to milliseconds"""
 
67
    return ((td.days * 24 * 60 * 60 * 1000)
 
68
            + (td.seconds * 1000)
 
69
            + (td.microseconds // 1000))
 
70
 
 
71
def milliseconds_to_string(ms):
 
72
    td = datetime.timedelta(0, 0, 0, ms)
 
73
    return ("%(days)s%(hours)02d:%(minutes)02d:%(seconds)02d"
 
74
            % { "days": "%dT" % td.days if td.days else "",
 
75
                "hours": td.seconds // 3600,
 
76
                "minutes": (td.seconds % 3600) // 60,
 
77
                "seconds": td.seconds % 60,
 
78
                })
 
79
 
 
80
def string_to_delta(interval):
 
81
    """Parse a string and return a datetime.timedelta
 
82
    
 
83
    >>> string_to_delta("7d")
 
84
    datetime.timedelta(7)
 
85
    >>> string_to_delta("60s")
 
86
    datetime.timedelta(0, 60)
 
87
    >>> string_to_delta("60m")
 
88
    datetime.timedelta(0, 3600)
 
89
    >>> string_to_delta("24h")
 
90
    datetime.timedelta(1)
 
91
    >>> string_to_delta("1w")
 
92
    datetime.timedelta(7)
 
93
    >>> string_to_delta("5m 30s")
 
94
    datetime.timedelta(0, 330)
 
95
    """
 
96
    value = datetime.timedelta(0)
 
97
    regexp = re.compile("(\d+)([dsmhw]?)")
 
98
    
 
99
    for num, suffix in regexp.findall(interval):
 
100
        if suffix == "d":
 
101
            value += datetime.timedelta(int(num))
 
102
        elif suffix == "s":
 
103
            value += datetime.timedelta(0, int(num))
 
104
        elif suffix == "m":
 
105
            value += datetime.timedelta(0, 0, 0, 0, int(num))
 
106
        elif suffix == "h":
 
107
            value += datetime.timedelta(0, 0, 0, 0, 0, int(num))
 
108
        elif suffix == "w":
 
109
            value += datetime.timedelta(0, 0, 0, 0, 0, 0, int(num))
 
110
        elif suffix == "":
 
111
            value += datetime.timedelta(0, 0, 0, int(num))
 
112
    return value
 
113
 
 
114
def print_clients(clients, keywords):
 
115
    def valuetostring(value, keyword):
 
116
        if type(value) is dbus.Boolean:
 
117
            return "Yes" if value else "No"
 
118
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
 
119
                       "ApprovalDuration"):
 
120
            return milliseconds_to_string(value)
 
121
        return unicode(value)
 
122
    
 
123
    # Create format string to print table rows
 
124
    format_string = " ".join("%%-%ds" %
 
125
                             max(len(tablewords[key]),
 
126
                                 max(len(valuetostring(client[key],
 
127
                                                       key))
 
128
                                     for client in
 
129
                                     clients))
 
130
                             for key in keywords)
 
131
    # Print header line
 
132
    print(format_string % tuple(tablewords[key] for key in keywords))
 
133
    for client in clients:
 
134
        print(format_string % tuple(valuetostring(client[key], key)
 
135
                                    for key in keywords))
 
136
 
 
137
def has_actions(options):
 
138
    return any((options.enable,
 
139
                options.disable,
 
140
                options.bump_timeout,
 
141
                options.start_checker,
 
142
                options.stop_checker,
 
143
                options.is_enabled,
 
144
                options.remove,
 
145
                options.checker is not None,
 
146
                options.timeout is not None,
 
147
                options.extended_timeout is not None,
 
148
                options.interval is not None,
 
149
                options.approved_by_default is not None,
 
150
                options.approval_delay is not None,
 
151
                options.approval_duration is not None,
 
152
                options.host is not None,
 
153
                options.secret is not None,
 
154
                options.approve,
 
155
                options.deny))
 
156
 
 
157
def main():
 
158
    parser = argparse.ArgumentParser()
 
159
    parser.add_argument("--version", action="version",
 
160
                        version = "%%prog %s" % version,
 
161
                        help="show version number and exit")
 
162
    parser.add_argument("-a", "--all", action="store_true",
 
163
                        help="Select all clients")
 
164
    parser.add_argument("-v", "--verbose", action="store_true",
 
165
                        help="Print all fields")
 
166
    parser.add_argument("-e", "--enable", action="store_true",
 
167
                        help="Enable client")
 
168
    parser.add_argument("-d", "--disable", action="store_true",
 
169
                        help="disable client")
 
170
    parser.add_argument("-b", "--bump-timeout", action="store_true",
 
171
                        help="Bump timeout for client")
 
172
    parser.add_argument("--start-checker", action="store_true",
 
173
                        help="Start checker for client")
 
174
    parser.add_argument("--stop-checker", action="store_true",
 
175
                        help="Stop checker for client")
 
176
    parser.add_argument("-V", "--is-enabled", action="store_true",
 
177
                        help="Check if client is enabled")
 
178
    parser.add_argument("-r", "--remove", action="store_true",
 
179
                        help="Remove client")
 
180
    parser.add_argument("-c", "--checker",
 
181
                        help="Set checker command for client")
 
182
    parser.add_argument("-t", "--timeout",
 
183
                        help="Set timeout for client")
 
184
    parser.add_argument("--extended-timeout",
 
185
                        help="Set extended timeout for client")
 
186
    parser.add_argument("-i", "--interval",
 
187
                        help="Set checker interval for client")
 
188
    parser.add_argument("--approve-by-default", action="store_true",
 
189
                        default=None, dest="approved_by_default",
 
190
                        help="Set client to be approved by default")
 
191
    parser.add_argument("--deny-by-default", action="store_false",
 
192
                        dest="approved_by_default",
 
193
                        help="Set client to be denied by default")
 
194
    parser.add_argument("--approval-delay",
 
195
                        help="Set delay before client approve/deny")
 
196
    parser.add_argument("--approval-duration",
 
197
                        help="Set duration of one client approval")
 
198
    parser.add_argument("-H", "--host", help="Set host for client")
 
199
    parser.add_argument("-s", "--secret", type=file,
 
200
                        help="Set password blob (file) for client")
 
201
    parser.add_argument("-A", "--approve", action="store_true",
 
202
                        help="Approve any current client request")
 
203
    parser.add_argument("-D", "--deny", action="store_true",
 
204
                        help="Deny any current client request")
 
205
    parser.add_argument("client", nargs="*", help="Client name")
 
206
    options = parser.parse_args()
 
207
    
 
208
    if has_actions(options) and not options.client and not options.all:
 
209
        parser.error("Options require clients names or --all.")
 
210
    if options.verbose and has_actions(options):
 
211
        parser.error("--verbose can only be used alone or with"
 
212
                     " --all.")
 
213
    if options.all and not has_actions(options):
 
214
        parser.error("--all requires an action.")
 
215
    
 
216
    try:
 
217
        bus = dbus.SystemBus()
 
218
        mandos_dbus_objc = bus.get_object(busname, server_path)
 
219
    except dbus.exceptions.DBusException:
 
220
        print("Could not connect to Mandos server",
 
221
              file=sys.stderr)
 
222
        sys.exit(1)
 
223
    
 
224
    mandos_serv = dbus.Interface(mandos_dbus_objc,
 
225
                                 dbus_interface = server_interface)
 
226
    
 
227
    #block stderr since dbus library prints to stderr
 
228
    null = os.open(os.path.devnull, os.O_RDWR)
 
229
    stderrcopy = os.dup(sys.stderr.fileno())
 
230
    os.dup2(null, sys.stderr.fileno())
 
231
    os.close(null)
 
232
    try:
 
233
        try:
 
234
            mandos_clients = mandos_serv.GetAllClientsWithProperties()
 
235
        finally:
 
236
            #restore stderr
 
237
            os.dup2(stderrcopy, sys.stderr.fileno())
 
238
            os.close(stderrcopy)
 
239
    except dbus.exceptions.DBusException:
 
240
        print("Access denied: Accessing mandos server through dbus.",
 
241
              file=sys.stderr)
 
242
        sys.exit(1)
 
243
    
 
244
    # Compile dict of (clients: properties) to process
 
245
    clients={}
 
246
    
 
247
    if options.all or not options.client:
 
248
        clients = dict((bus.get_object(busname, path), properties)
 
249
                       for path, properties in
 
250
                       mandos_clients.iteritems())
 
251
    else:
 
252
        for name in options.client:
 
253
            for path, client in mandos_clients.iteritems():
 
254
                if client["Name"] == name:
 
255
                    client_objc = bus.get_object(busname, path)
 
256
                    clients[client_objc] = client
 
257
                    break
 
258
            else:
 
259
                print("Client not found on server: %r" % name,
 
260
                      file=sys.stderr)
 
261
                sys.exit(1)
 
262
    
 
263
    if not has_actions(options) and clients:
 
264
        if options.verbose:
 
265
            keywords = ("Name", "Enabled", "Timeout",
 
266
                        "LastCheckedOK", "Created", "Interval",
 
267
                        "Host", "Fingerprint", "CheckerRunning",
 
268
                        "LastEnabled", "ApprovalPending",
 
269
                        "ApprovedByDefault",
 
270
                        "LastApprovalRequest", "ApprovalDelay",
 
271
                        "ApprovalDuration", "Checker",
 
272
                        "ExtendedTimeout")
 
273
        else:
 
274
            keywords = defaultkeywords
 
275
        
 
276
        print_clients(clients.values(), keywords)
 
277
    else:
 
278
        # Process each client in the list by all selected options
 
279
        for client in clients:
 
280
            if options.remove:
 
281
                mandos_serv.RemoveClient(client.__dbus_object_path__)
 
282
            if options.enable:
 
283
                client.Enable(dbus_interface=client_interface)
 
284
            if options.disable:
 
285
                client.Disable(dbus_interface=client_interface)
 
286
            if options.bump_timeout:
 
287
                client.CheckedOK(dbus_interface=client_interface)
 
288
            if options.start_checker:
 
289
                client.StartChecker(dbus_interface=client_interface)
 
290
            if options.stop_checker:
 
291
                client.StopChecker(dbus_interface=client_interface)
 
292
            if options.is_enabled:
 
293
                sys.exit(0 if client.Get(client_interface,
 
294
                                         "Enabled",
 
295
                                         dbus_interface=
 
296
                                         dbus.PROPERTIES_IFACE)
 
297
                         else 1)
 
298
            if options.checker is not None:
 
299
                client.Set(client_interface, "Checker",
 
300
                           options.checker,
 
301
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
302
            if options.host is not None:
 
303
                client.Set(client_interface, "Host", options.host,
 
304
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
305
            if options.interval is not None:
 
306
                client.Set(client_interface, "Interval",
 
307
                           timedelta_to_milliseconds
 
308
                           (string_to_delta(options.interval)),
 
309
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
310
            if options.approval_delay is not None:
 
311
                client.Set(client_interface, "ApprovalDelay",
 
312
                           timedelta_to_milliseconds
 
313
                           (string_to_delta(options.
 
314
                                            approval_delay)),
 
315
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
316
            if options.approval_duration is not None:
 
317
                client.Set(client_interface, "ApprovalDuration",
 
318
                           timedelta_to_milliseconds
 
319
                           (string_to_delta(options.
 
320
                                            approval_duration)),
 
321
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
322
            if options.timeout is not None:
 
323
                client.Set(client_interface, "Timeout",
 
324
                           timedelta_to_milliseconds
 
325
                           (string_to_delta(options.timeout)),
 
326
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
327
            if options.extended_timeout is not None:
 
328
                client.Set(client_interface, "ExtendedTimeout",
 
329
                           timedelta_to_milliseconds
 
330
                           (string_to_delta(options.extended_timeout)),
 
331
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
332
            if options.secret is not None:
 
333
                client.Set(client_interface, "Secret",
 
334
                           dbus.ByteArray(open(options.secret,
 
335
                                               "rb").read()),
 
336
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
337
            if options.approved_by_default is not None:
 
338
                client.Set(client_interface, "ApprovedByDefault",
 
339
                           dbus.Boolean(options
 
340
                                        .approved_by_default),
 
341
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
342
            if options.approve:
 
343
                client.Approve(dbus.Boolean(True),
 
344
                               dbus_interface=client_interface)
 
345
            elif options.deny:
 
346
                client.Approve(dbus.Boolean(False),
 
347
                               dbus_interface=client_interface)
 
348
 
 
349
if __name__ == "__main__":
 
350
    main()