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  • Committer: Teddy Hogeborn
  • Date: 2008-08-11 08:04:35 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080811080435-7qfkwv5g43ww5h9x
* plugins.d/password-request.c (main): Bug fix: Bring up network
                                       interface *before* dropping
                                       privileges.

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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 © 2008-2016 Teddy Hogeborn
7
 
# Copyright © 2008-2016 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
 
# 
25
 
 
26
 
from __future__ import (division, absolute_import, print_function,
27
 
                        unicode_literals)
28
 
 
29
 
try:
30
 
    from future_builtins import *
31
 
except ImportError:
32
 
    pass
33
 
 
34
 
import sys
35
 
import argparse
36
 
import locale
37
 
import datetime
38
 
import re
39
 
import os
40
 
import collections
41
 
import doctest
42
 
 
43
 
import dbus
44
 
 
45
 
if sys.version_info.major == 2:
46
 
    str = unicode
47
 
 
48
 
locale.setlocale(locale.LC_ALL, "")
49
 
 
50
 
tablewords = {
51
 
    "Name": "Name",
52
 
    "Enabled": "Enabled",
53
 
    "Timeout": "Timeout",
54
 
    "LastCheckedOK": "Last Successful Check",
55
 
    "LastApprovalRequest": "Last Approval Request",
56
 
    "Created": "Created",
57
 
    "Interval": "Interval",
58
 
    "Host": "Host",
59
 
    "Fingerprint": "Fingerprint",
60
 
    "CheckerRunning": "Check Is Running",
61
 
    "LastEnabled": "Last Enabled",
62
 
    "ApprovalPending": "Approval Is Pending",
63
 
    "ApprovedByDefault": "Approved By Default",
64
 
    "ApprovalDelay": "Approval Delay",
65
 
    "ApprovalDuration": "Approval Duration",
66
 
    "Checker": "Checker",
67
 
    "ExtendedTimeout": "Extended Timeout"
68
 
}
69
 
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
70
 
domain = "se.recompile"
71
 
busname = domain + ".Mandos"
72
 
server_path = "/"
73
 
server_interface = domain + ".Mandos"
74
 
client_interface = domain + ".Mandos.Client"
75
 
version = "1.7.3"
76
 
 
77
 
 
78
 
try:
79
 
    dbus.OBJECT_MANAGER_IFACE
80
 
except AttributeError:
81
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
82
 
 
83
 
def milliseconds_to_string(ms):
84
 
    td = datetime.timedelta(0, 0, 0, ms)
85
 
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}".format(
86
 
        days = "{}T".format(td.days) if td.days else "",
87
 
        hours = td.seconds // 3600,
88
 
        minutes = (td.seconds % 3600) // 60,
89
 
        seconds = td.seconds % 60))
90
 
 
91
 
 
92
 
def rfc3339_duration_to_delta(duration):
93
 
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
94
 
    
95
 
    >>> rfc3339_duration_to_delta("P7D")
96
 
    datetime.timedelta(7)
97
 
    >>> rfc3339_duration_to_delta("PT60S")
98
 
    datetime.timedelta(0, 60)
99
 
    >>> rfc3339_duration_to_delta("PT60M")
100
 
    datetime.timedelta(0, 3600)
101
 
    >>> rfc3339_duration_to_delta("PT24H")
102
 
    datetime.timedelta(1)
103
 
    >>> rfc3339_duration_to_delta("P1W")
104
 
    datetime.timedelta(7)
105
 
    >>> rfc3339_duration_to_delta("PT5M30S")
106
 
    datetime.timedelta(0, 330)
107
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
108
 
    datetime.timedelta(1, 200)
109
 
    """
110
 
    
111
 
    # Parsing an RFC 3339 duration with regular expressions is not
112
 
    # possible - there would have to be multiple places for the same
113
 
    # values, like seconds.  The current code, while more esoteric, is
114
 
    # cleaner without depending on a parsing library.  If Python had a
115
 
    # built-in library for parsing we would use it, but we'd like to
116
 
    # avoid excessive use of external libraries.
117
 
    
118
 
    # New type for defining tokens, syntax, and semantics all-in-one
119
 
    Token = collections.namedtuple("Token", (
120
 
        "regexp",  # To match token; if "value" is not None, must have
121
 
                   # a "group" containing digits
122
 
        "value",   # datetime.timedelta or None
123
 
        "followers"))           # Tokens valid after this token
124
 
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
125
 
    # the "duration" ABNF definition in RFC 3339, Appendix A.
126
 
    token_end = Token(re.compile(r"$"), None, frozenset())
127
 
    token_second = Token(re.compile(r"(\d+)S"),
128
 
                         datetime.timedelta(seconds=1),
129
 
                         frozenset((token_end, )))
130
 
    token_minute = Token(re.compile(r"(\d+)M"),
131
 
                         datetime.timedelta(minutes=1),
132
 
                         frozenset((token_second, token_end)))
133
 
    token_hour = Token(re.compile(r"(\d+)H"),
134
 
                       datetime.timedelta(hours=1),
135
 
                       frozenset((token_minute, token_end)))
136
 
    token_time = Token(re.compile(r"T"),
137
 
                       None,
138
 
                       frozenset((token_hour, token_minute,
139
 
                                  token_second)))
140
 
    token_day = Token(re.compile(r"(\d+)D"),
141
 
                      datetime.timedelta(days=1),
142
 
                      frozenset((token_time, token_end)))
143
 
    token_month = Token(re.compile(r"(\d+)M"),
144
 
                        datetime.timedelta(weeks=4),
145
 
                        frozenset((token_day, token_end)))
146
 
    token_year = Token(re.compile(r"(\d+)Y"),
147
 
                       datetime.timedelta(weeks=52),
148
 
                       frozenset((token_month, token_end)))
149
 
    token_week = Token(re.compile(r"(\d+)W"),
150
 
                       datetime.timedelta(weeks=1),
151
 
                       frozenset((token_end, )))
152
 
    token_duration = Token(re.compile(r"P"), None,
153
 
                           frozenset((token_year, token_month,
154
 
                                      token_day, token_time,
155
 
                                      token_week)))
156
 
    # Define starting values
157
 
    value = datetime.timedelta() # Value so far
158
 
    found_token = None
159
 
    followers = frozenset((token_duration, )) # Following valid tokens
160
 
    s = duration                # String left to parse
161
 
    # Loop until end token is found
162
 
    while found_token is not token_end:
163
 
        # Search for any currently valid tokens
164
 
        for token in followers:
165
 
            match = token.regexp.match(s)
166
 
            if match is not None:
167
 
                # Token found
168
 
                if token.value is not None:
169
 
                    # Value found, parse digits
170
 
                    factor = int(match.group(1), 10)
171
 
                    # Add to value so far
172
 
                    value += factor * token.value
173
 
                # Strip token from string
174
 
                s = token.regexp.sub("", s, 1)
175
 
                # Go to found token
176
 
                found_token = token
177
 
                # Set valid next tokens
178
 
                followers = found_token.followers
179
 
                break
180
 
        else:
181
 
            # No currently valid tokens were found
182
 
            raise ValueError("Invalid RFC 3339 duration: {!r}"
183
 
                             .format(duration))
184
 
    # End token found
185
 
    return value
186
 
 
187
 
 
188
 
def string_to_delta(interval):
189
 
    """Parse a string and return a datetime.timedelta
190
 
    
191
 
    >>> string_to_delta('7d')
192
 
    datetime.timedelta(7)
193
 
    >>> string_to_delta('60s')
194
 
    datetime.timedelta(0, 60)
195
 
    >>> string_to_delta('60m')
196
 
    datetime.timedelta(0, 3600)
197
 
    >>> string_to_delta('24h')
198
 
    datetime.timedelta(1)
199
 
    >>> string_to_delta('1w')
200
 
    datetime.timedelta(7)
201
 
    >>> string_to_delta('5m 30s')
202
 
    datetime.timedelta(0, 330)
203
 
    """
204
 
    
205
 
    try:
206
 
        return rfc3339_duration_to_delta(interval)
207
 
    except ValueError:
208
 
        pass
209
 
    
210
 
    value = datetime.timedelta(0)
211
 
    regexp = re.compile(r"(\d+)([dsmhw]?)")
212
 
    
213
 
    for num, suffix in regexp.findall(interval):
214
 
        if suffix == "d":
215
 
            value += datetime.timedelta(int(num))
216
 
        elif suffix == "s":
217
 
            value += datetime.timedelta(0, int(num))
218
 
        elif suffix == "m":
219
 
            value += datetime.timedelta(0, 0, 0, 0, int(num))
220
 
        elif suffix == "h":
221
 
            value += datetime.timedelta(0, 0, 0, 0, 0, int(num))
222
 
        elif suffix == "w":
223
 
            value += datetime.timedelta(0, 0, 0, 0, 0, 0, int(num))
224
 
        elif suffix == "":
225
 
            value += datetime.timedelta(0, 0, 0, int(num))
226
 
    return value
227
 
 
228
 
 
229
 
def print_clients(clients, keywords):
230
 
    def valuetostring(value, keyword):
231
 
        if type(value) is dbus.Boolean:
232
 
            return "Yes" if value else "No"
233
 
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
234
 
                       "ApprovalDuration", "ExtendedTimeout"):
235
 
            return milliseconds_to_string(value)
236
 
        return str(value)
237
 
    
238
 
    # Create format string to print table rows
239
 
    format_string = " ".join("{{{key}:{width}}}".format(
240
 
        width = max(len(tablewords[key]),
241
 
                    max(len(valuetostring(client[key], key))
242
 
                        for client in clients)),
243
 
        key = key)
244
 
                             for key in keywords)
245
 
    # Print header line
246
 
    print(format_string.format(**tablewords))
247
 
    for client in clients:
248
 
        print(format_string.format(**{
249
 
            key: valuetostring(client[key], key)
250
 
            for key in keywords }))
251
 
 
252
 
 
253
 
def has_actions(options):
254
 
    return any((options.enable,
255
 
                options.disable,
256
 
                options.bump_timeout,
257
 
                options.start_checker,
258
 
                options.stop_checker,
259
 
                options.is_enabled,
260
 
                options.remove,
261
 
                options.checker is not None,
262
 
                options.timeout is not None,
263
 
                options.extended_timeout is not None,
264
 
                options.interval is not None,
265
 
                options.approved_by_default is not None,
266
 
                options.approval_delay is not None,
267
 
                options.approval_duration is not None,
268
 
                options.host is not None,
269
 
                options.secret is not None,
270
 
                options.approve,
271
 
                options.deny))
272
 
 
273
 
 
274
 
def main():
275
 
    parser = argparse.ArgumentParser()
276
 
    parser.add_argument("--version", action="version",
277
 
                        version = "%(prog)s {}".format(version),
278
 
                        help="show version number and exit")
279
 
    parser.add_argument("-a", "--all", action="store_true",
280
 
                        help="Select all clients")
281
 
    parser.add_argument("-v", "--verbose", action="store_true",
282
 
                        help="Print all fields")
283
 
    parser.add_argument("-e", "--enable", action="store_true",
284
 
                        help="Enable client")
285
 
    parser.add_argument("-d", "--disable", action="store_true",
286
 
                        help="disable client")
287
 
    parser.add_argument("-b", "--bump-timeout", action="store_true",
288
 
                        help="Bump timeout for client")
289
 
    parser.add_argument("--start-checker", action="store_true",
290
 
                        help="Start checker for client")
291
 
    parser.add_argument("--stop-checker", action="store_true",
292
 
                        help="Stop checker for client")
293
 
    parser.add_argument("-V", "--is-enabled", action="store_true",
294
 
                        help="Check if client is enabled")
295
 
    parser.add_argument("-r", "--remove", action="store_true",
296
 
                        help="Remove client")
297
 
    parser.add_argument("-c", "--checker",
298
 
                        help="Set checker command for client")
299
 
    parser.add_argument("-t", "--timeout",
300
 
                        help="Set timeout for client")
301
 
    parser.add_argument("--extended-timeout",
302
 
                        help="Set extended timeout for client")
303
 
    parser.add_argument("-i", "--interval",
304
 
                        help="Set checker interval for client")
305
 
    parser.add_argument("--approve-by-default", action="store_true",
306
 
                        default=None, dest="approved_by_default",
307
 
                        help="Set client to be approved by default")
308
 
    parser.add_argument("--deny-by-default", action="store_false",
309
 
                        dest="approved_by_default",
310
 
                        help="Set client to be denied by default")
311
 
    parser.add_argument("--approval-delay",
312
 
                        help="Set delay before client approve/deny")
313
 
    parser.add_argument("--approval-duration",
314
 
                        help="Set duration of one client approval")
315
 
    parser.add_argument("-H", "--host", help="Set host for client")
316
 
    parser.add_argument("-s", "--secret",
317
 
                        type=argparse.FileType(mode="rb"),
318
 
                        help="Set password blob (file) for client")
319
 
    parser.add_argument("-A", "--approve", action="store_true",
320
 
                        help="Approve any current client request")
321
 
    parser.add_argument("-D", "--deny", action="store_true",
322
 
                        help="Deny any current client request")
323
 
    parser.add_argument("--check", action="store_true",
324
 
                        help="Run self-test")
325
 
    parser.add_argument("client", nargs="*", help="Client name")
326
 
    options = parser.parse_args()
327
 
    
328
 
    if has_actions(options) and not (options.client or options.all):
329
 
        parser.error("Options require clients names or --all.")
330
 
    if options.verbose and has_actions(options):
331
 
        parser.error("--verbose can only be used alone or with"
332
 
                     " --all.")
333
 
    if options.all and not has_actions(options):
334
 
        parser.error("--all requires an action.")
335
 
 
336
 
    if options.check:
337
 
        fail_count, test_count = doctest.testmod()
338
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
339
 
    
340
 
    try:
341
 
        bus = dbus.SystemBus()
342
 
        mandos_dbus_objc = bus.get_object(busname, server_path)
343
 
    except dbus.exceptions.DBusException:
344
 
        print("Could not connect to Mandos server", file=sys.stderr)
345
 
        sys.exit(1)
346
 
    
347
 
    mandos_serv = dbus.Interface(mandos_dbus_objc,
348
 
                                 dbus_interface = server_interface)
349
 
    mandos_serv_object_manager = dbus.Interface(
350
 
        mandos_dbus_objc, dbus_interface = dbus.OBJECT_MANAGER_IFACE)
351
 
    
352
 
    #block stderr since dbus library prints to stderr
353
 
    null = os.open(os.path.devnull, os.O_RDWR)
354
 
    stderrcopy = os.dup(sys.stderr.fileno())
355
 
    os.dup2(null, sys.stderr.fileno())
356
 
    os.close(null)
357
 
    try:
358
 
        try:
359
 
            mandos_clients = { path: ifs_and_props[client_interface]
360
 
                               for path, ifs_and_props in
361
 
                               mandos_serv_object_manager
362
 
                               .GetManagedObjects().items()
363
 
                               if client_interface in ifs_and_props }
364
 
        finally:
365
 
            #restore stderr
366
 
            os.dup2(stderrcopy, sys.stderr.fileno())
367
 
            os.close(stderrcopy)
368
 
    except dbus.exceptions.DBusException as e:
369
 
        print("Access denied: Accessing mandos server through D-Bus: {}"
370
 
              .format(e), file=sys.stderr)
371
 
        sys.exit(1)
372
 
    
373
 
    # Compile dict of (clients: properties) to process
374
 
    clients={}
375
 
    
376
 
    if options.all or not options.client:
377
 
        clients = { bus.get_object(busname, path): properties
378
 
                    for path, properties in mandos_clients.items() }
379
 
    else:
380
 
        for name in options.client:
381
 
            for path, client in mandos_clients.items():
382
 
                if client["Name"] == name:
383
 
                    client_objc = bus.get_object(busname, path)
384
 
                    clients[client_objc] = client
385
 
                    break
386
 
            else:
387
 
                print("Client not found on server: {!r}"
388
 
                      .format(name), file=sys.stderr)
389
 
                sys.exit(1)
390
 
    
391
 
    if not has_actions(options) and clients:
392
 
        if options.verbose:
393
 
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
394
 
                        "Created", "Interval", "Host", "Fingerprint",
395
 
                        "CheckerRunning", "LastEnabled",
396
 
                        "ApprovalPending", "ApprovedByDefault",
397
 
                        "LastApprovalRequest", "ApprovalDelay",
398
 
                        "ApprovalDuration", "Checker",
399
 
                        "ExtendedTimeout")
400
 
        else:
401
 
            keywords = defaultkeywords
402
 
        
403
 
        print_clients(clients.values(), keywords)
404
 
    else:
405
 
        # Process each client in the list by all selected options
406
 
        for client in clients:
407
 
            
408
 
            def set_client_prop(prop, value):
409
 
                """Set a Client D-Bus property"""
410
 
                client.Set(client_interface, prop, value,
411
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
412
 
            
413
 
            def set_client_prop_ms(prop, value):
414
 
                """Set a Client D-Bus property, converted
415
 
                from a string to milliseconds."""
416
 
                set_client_prop(prop,
417
 
                                string_to_delta(value).total_seconds()
418
 
                                * 1000)
419
 
            
420
 
            if options.remove:
421
 
                mandos_serv.RemoveClient(client.__dbus_object_path__)
422
 
            if options.enable:
423
 
                set_client_prop("Enabled", dbus.Boolean(True))
424
 
            if options.disable:
425
 
                set_client_prop("Enabled", dbus.Boolean(False))
426
 
            if options.bump_timeout:
427
 
                set_client_prop("LastCheckedOK", "")
428
 
            if options.start_checker:
429
 
                set_client_prop("CheckerRunning", dbus.Boolean(True))
430
 
            if options.stop_checker:
431
 
                set_client_prop("CheckerRunning", dbus.Boolean(False))
432
 
            if options.is_enabled:
433
 
                sys.exit(0 if client.Get(client_interface,
434
 
                                         "Enabled",
435
 
                                         dbus_interface=
436
 
                                         dbus.PROPERTIES_IFACE)
437
 
                         else 1)
438
 
            if options.checker is not None:
439
 
                set_client_prop("Checker", options.checker)
440
 
            if options.host is not None:
441
 
                set_client_prop("Host", options.host)
442
 
            if options.interval is not None:
443
 
                set_client_prop_ms("Interval", options.interval)
444
 
            if options.approval_delay is not None:
445
 
                set_client_prop_ms("ApprovalDelay",
446
 
                                   options.approval_delay)
447
 
            if options.approval_duration is not None:
448
 
                set_client_prop_ms("ApprovalDuration",
449
 
                                   options.approval_duration)
450
 
            if options.timeout is not None:
451
 
                set_client_prop_ms("Timeout", options.timeout)
452
 
            if options.extended_timeout is not None:
453
 
                set_client_prop_ms("ExtendedTimeout",
454
 
                                   options.extended_timeout)
455
 
            if options.secret is not None:
456
 
                set_client_prop("Secret",
457
 
                                dbus.ByteArray(options.secret.read()))
458
 
            if options.approved_by_default is not None:
459
 
                set_client_prop("ApprovedByDefault",
460
 
                                dbus.Boolean(options
461
 
                                             .approved_by_default))
462
 
            if options.approve:
463
 
                client.Approve(dbus.Boolean(True),
464
 
                               dbus_interface=client_interface)
465
 
            elif options.deny:
466
 
                client.Approve(dbus.Boolean(False),
467
 
                               dbus_interface=client_interface)
468
 
 
469
 
 
470
 
if __name__ == "__main__":
471
 
    main()