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  • Committer: Teddy Hogeborn
  • Date: 2008-09-06 17:24:58 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080906172458-2x5wlfkn7oqckt1y
* legalnotice.xml: Copy DocBook 4.4-formatted text from
                   <http://www.gnu.org/licenses/gpl-3.0.dbk>.

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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
 
import json
43
 
 
44
 
import dbus
45
 
 
46
 
if sys.version_info.major == 2:
47
 
    str = unicode
48
 
 
49
 
locale.setlocale(locale.LC_ALL, "")
50
 
 
51
 
tablewords = {
52
 
    "Name": "Name",
53
 
    "Enabled": "Enabled",
54
 
    "Timeout": "Timeout",
55
 
    "LastCheckedOK": "Last Successful Check",
56
 
    "LastApprovalRequest": "Last Approval Request",
57
 
    "Created": "Created",
58
 
    "Interval": "Interval",
59
 
    "Host": "Host",
60
 
    "Fingerprint": "Fingerprint",
61
 
    "CheckerRunning": "Check Is Running",
62
 
    "LastEnabled": "Last Enabled",
63
 
    "ApprovalPending": "Approval Is Pending",
64
 
    "ApprovedByDefault": "Approved By Default",
65
 
    "ApprovalDelay": "Approval Delay",
66
 
    "ApprovalDuration": "Approval Duration",
67
 
    "Checker": "Checker",
68
 
    "ExtendedTimeout": "Extended Timeout"
69
 
}
70
 
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
71
 
domain = "se.recompile"
72
 
busname = domain + ".Mandos"
73
 
server_path = "/"
74
 
server_interface = domain + ".Mandos"
75
 
client_interface = domain + ".Mandos.Client"
76
 
version = "1.7.10"
77
 
 
78
 
 
79
 
try:
80
 
    dbus.OBJECT_MANAGER_IFACE
81
 
except AttributeError:
82
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
83
 
 
84
 
def milliseconds_to_string(ms):
85
 
    td = datetime.timedelta(0, 0, 0, ms)
86
 
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}".format(
87
 
        days = "{}T".format(td.days) if td.days else "",
88
 
        hours = td.seconds // 3600,
89
 
        minutes = (td.seconds % 3600) // 60,
90
 
        seconds = td.seconds % 60))
91
 
 
92
 
 
93
 
def rfc3339_duration_to_delta(duration):
94
 
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
95
 
    
96
 
    >>> rfc3339_duration_to_delta("P7D")
97
 
    datetime.timedelta(7)
98
 
    >>> rfc3339_duration_to_delta("PT60S")
99
 
    datetime.timedelta(0, 60)
100
 
    >>> rfc3339_duration_to_delta("PT60M")
101
 
    datetime.timedelta(0, 3600)
102
 
    >>> rfc3339_duration_to_delta("PT24H")
103
 
    datetime.timedelta(1)
104
 
    >>> rfc3339_duration_to_delta("P1W")
105
 
    datetime.timedelta(7)
106
 
    >>> rfc3339_duration_to_delta("PT5M30S")
107
 
    datetime.timedelta(0, 330)
108
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
109
 
    datetime.timedelta(1, 200)
110
 
    """
111
 
    
112
 
    # Parsing an RFC 3339 duration with regular expressions is not
113
 
    # possible - there would have to be multiple places for the same
114
 
    # values, like seconds.  The current code, while more esoteric, is
115
 
    # cleaner without depending on a parsing library.  If Python had a
116
 
    # built-in library for parsing we would use it, but we'd like to
117
 
    # avoid excessive use of external libraries.
118
 
    
119
 
    # New type for defining tokens, syntax, and semantics all-in-one
120
 
    Token = collections.namedtuple("Token", (
121
 
        "regexp",  # To match token; if "value" is not None, must have
122
 
                   # a "group" containing digits
123
 
        "value",   # datetime.timedelta or None
124
 
        "followers"))           # Tokens valid after this token
125
 
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
126
 
    # the "duration" ABNF definition in RFC 3339, Appendix A.
127
 
    token_end = Token(re.compile(r"$"), None, frozenset())
128
 
    token_second = Token(re.compile(r"(\d+)S"),
129
 
                         datetime.timedelta(seconds=1),
130
 
                         frozenset((token_end, )))
131
 
    token_minute = Token(re.compile(r"(\d+)M"),
132
 
                         datetime.timedelta(minutes=1),
133
 
                         frozenset((token_second, token_end)))
134
 
    token_hour = Token(re.compile(r"(\d+)H"),
135
 
                       datetime.timedelta(hours=1),
136
 
                       frozenset((token_minute, token_end)))
137
 
    token_time = Token(re.compile(r"T"),
138
 
                       None,
139
 
                       frozenset((token_hour, token_minute,
140
 
                                  token_second)))
141
 
    token_day = Token(re.compile(r"(\d+)D"),
142
 
                      datetime.timedelta(days=1),
143
 
                      frozenset((token_time, token_end)))
144
 
    token_month = Token(re.compile(r"(\d+)M"),
145
 
                        datetime.timedelta(weeks=4),
146
 
                        frozenset((token_day, token_end)))
147
 
    token_year = Token(re.compile(r"(\d+)Y"),
148
 
                       datetime.timedelta(weeks=52),
149
 
                       frozenset((token_month, token_end)))
150
 
    token_week = Token(re.compile(r"(\d+)W"),
151
 
                       datetime.timedelta(weeks=1),
152
 
                       frozenset((token_end, )))
153
 
    token_duration = Token(re.compile(r"P"), None,
154
 
                           frozenset((token_year, token_month,
155
 
                                      token_day, token_time,
156
 
                                      token_week)))
157
 
    # Define starting values
158
 
    value = datetime.timedelta() # Value so far
159
 
    found_token = None
160
 
    followers = frozenset((token_duration, )) # Following valid tokens
161
 
    s = duration                # String left to parse
162
 
    # Loop until end token is found
163
 
    while found_token is not token_end:
164
 
        # Search for any currently valid tokens
165
 
        for token in followers:
166
 
            match = token.regexp.match(s)
167
 
            if match is not None:
168
 
                # Token found
169
 
                if token.value is not None:
170
 
                    # Value found, parse digits
171
 
                    factor = int(match.group(1), 10)
172
 
                    # Add to value so far
173
 
                    value += factor * token.value
174
 
                # Strip token from string
175
 
                s = token.regexp.sub("", s, 1)
176
 
                # Go to found token
177
 
                found_token = token
178
 
                # Set valid next tokens
179
 
                followers = found_token.followers
180
 
                break
181
 
        else:
182
 
            # No currently valid tokens were found
183
 
            raise ValueError("Invalid RFC 3339 duration: {!r}"
184
 
                             .format(duration))
185
 
    # End token found
186
 
    return value
187
 
 
188
 
 
189
 
def string_to_delta(interval):
190
 
    """Parse a string and return a datetime.timedelta
191
 
    
192
 
    >>> string_to_delta('7d')
193
 
    datetime.timedelta(7)
194
 
    >>> string_to_delta('60s')
195
 
    datetime.timedelta(0, 60)
196
 
    >>> string_to_delta('60m')
197
 
    datetime.timedelta(0, 3600)
198
 
    >>> string_to_delta('24h')
199
 
    datetime.timedelta(1)
200
 
    >>> string_to_delta('1w')
201
 
    datetime.timedelta(7)
202
 
    >>> string_to_delta('5m 30s')
203
 
    datetime.timedelta(0, 330)
204
 
    """
205
 
    
206
 
    try:
207
 
        return rfc3339_duration_to_delta(interval)
208
 
    except ValueError:
209
 
        pass
210
 
    
211
 
    value = datetime.timedelta(0)
212
 
    regexp = re.compile(r"(\d+)([dsmhw]?)")
213
 
    
214
 
    for num, suffix in regexp.findall(interval):
215
 
        if suffix == "d":
216
 
            value += datetime.timedelta(int(num))
217
 
        elif suffix == "s":
218
 
            value += datetime.timedelta(0, int(num))
219
 
        elif suffix == "m":
220
 
            value += datetime.timedelta(0, 0, 0, 0, int(num))
221
 
        elif suffix == "h":
222
 
            value += datetime.timedelta(0, 0, 0, 0, 0, int(num))
223
 
        elif suffix == "w":
224
 
            value += datetime.timedelta(0, 0, 0, 0, 0, 0, int(num))
225
 
        elif suffix == "":
226
 
            value += datetime.timedelta(0, 0, 0, int(num))
227
 
    return value
228
 
 
229
 
 
230
 
def print_clients(clients, keywords):
231
 
    def valuetostring(value, keyword):
232
 
        if type(value) is dbus.Boolean:
233
 
            return "Yes" if value else "No"
234
 
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
235
 
                       "ApprovalDuration", "ExtendedTimeout"):
236
 
            return milliseconds_to_string(value)
237
 
        return str(value)
238
 
    
239
 
    # Create format string to print table rows
240
 
    format_string = " ".join("{{{key}:{width}}}".format(
241
 
        width = max(len(tablewords[key]),
242
 
                    max(len(valuetostring(client[key], key))
243
 
                        for client in clients)),
244
 
        key = key)
245
 
                             for key in keywords)
246
 
    # Print header line
247
 
    print(format_string.format(**tablewords))
248
 
    for client in clients:
249
 
        print(format_string.format(**{
250
 
            key: valuetostring(client[key], key)
251
 
            for key in keywords }))
252
 
 
253
 
 
254
 
def has_actions(options):
255
 
    return any((options.enable,
256
 
                options.disable,
257
 
                options.bump_timeout,
258
 
                options.start_checker,
259
 
                options.stop_checker,
260
 
                options.is_enabled,
261
 
                options.remove,
262
 
                options.checker is not None,
263
 
                options.timeout is not None,
264
 
                options.extended_timeout is not None,
265
 
                options.interval is not None,
266
 
                options.approved_by_default is not None,
267
 
                options.approval_delay is not None,
268
 
                options.approval_duration is not None,
269
 
                options.host is not None,
270
 
                options.secret is not None,
271
 
                options.approve,
272
 
                options.deny))
273
 
 
274
 
 
275
 
def main():
276
 
    parser = argparse.ArgumentParser()
277
 
    parser.add_argument("--version", action="version",
278
 
                        version = "%(prog)s {}".format(version),
279
 
                        help="show version number and exit")
280
 
    parser.add_argument("-a", "--all", action="store_true",
281
 
                        help="Select all clients")
282
 
    parser.add_argument("-v", "--verbose", action="store_true",
283
 
                        help="Print all fields")
284
 
    parser.add_argument("-j", "--dump-json", action="store_true",
285
 
                        help="Dump client data in JSON format")
286
 
    parser.add_argument("-e", "--enable", action="store_true",
287
 
                        help="Enable client")
288
 
    parser.add_argument("-d", "--disable", action="store_true",
289
 
                        help="disable client")
290
 
    parser.add_argument("-b", "--bump-timeout", action="store_true",
291
 
                        help="Bump timeout for client")
292
 
    parser.add_argument("--start-checker", action="store_true",
293
 
                        help="Start checker for client")
294
 
    parser.add_argument("--stop-checker", action="store_true",
295
 
                        help="Stop checker for client")
296
 
    parser.add_argument("-V", "--is-enabled", action="store_true",
297
 
                        help="Check if client is enabled")
298
 
    parser.add_argument("-r", "--remove", action="store_true",
299
 
                        help="Remove client")
300
 
    parser.add_argument("-c", "--checker",
301
 
                        help="Set checker command for client")
302
 
    parser.add_argument("-t", "--timeout",
303
 
                        help="Set timeout for client")
304
 
    parser.add_argument("--extended-timeout",
305
 
                        help="Set extended timeout for client")
306
 
    parser.add_argument("-i", "--interval",
307
 
                        help="Set checker interval for client")
308
 
    parser.add_argument("--approve-by-default", action="store_true",
309
 
                        default=None, dest="approved_by_default",
310
 
                        help="Set client to be approved by default")
311
 
    parser.add_argument("--deny-by-default", action="store_false",
312
 
                        dest="approved_by_default",
313
 
                        help="Set client to be denied by default")
314
 
    parser.add_argument("--approval-delay",
315
 
                        help="Set delay before client approve/deny")
316
 
    parser.add_argument("--approval-duration",
317
 
                        help="Set duration of one client approval")
318
 
    parser.add_argument("-H", "--host", help="Set host for client")
319
 
    parser.add_argument("-s", "--secret",
320
 
                        type=argparse.FileType(mode="rb"),
321
 
                        help="Set password blob (file) for client")
322
 
    parser.add_argument("-A", "--approve", action="store_true",
323
 
                        help="Approve any current client request")
324
 
    parser.add_argument("-D", "--deny", action="store_true",
325
 
                        help="Deny any current client request")
326
 
    parser.add_argument("--check", action="store_true",
327
 
                        help="Run self-test")
328
 
    parser.add_argument("client", nargs="*", help="Client name")
329
 
    options = parser.parse_args()
330
 
    
331
 
    if has_actions(options) and not (options.client or options.all):
332
 
        parser.error("Options require clients names or --all.")
333
 
    if options.verbose and has_actions(options):
334
 
        parser.error("--verbose can only be used alone.")
335
 
    if options.dump_json and (options.verbose or has_actions(options)):
336
 
        parser.error("--dump-json can only be used alone.")
337
 
    if options.all and not has_actions(options):
338
 
        parser.error("--all requires an action.")
339
 
    
340
 
    if options.check:
341
 
        fail_count, test_count = doctest.testmod()
342
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
343
 
    
344
 
    try:
345
 
        bus = dbus.SystemBus()
346
 
        mandos_dbus_objc = bus.get_object(busname, server_path)
347
 
    except dbus.exceptions.DBusException:
348
 
        print("Could not connect to Mandos server", file=sys.stderr)
349
 
        sys.exit(1)
350
 
    
351
 
    mandos_serv = dbus.Interface(mandos_dbus_objc,
352
 
                                 dbus_interface = server_interface)
353
 
    mandos_serv_object_manager = dbus.Interface(
354
 
        mandos_dbus_objc, dbus_interface = dbus.OBJECT_MANAGER_IFACE)
355
 
    
356
 
    #block stderr since dbus library prints to stderr
357
 
    null = os.open(os.path.devnull, os.O_RDWR)
358
 
    stderrcopy = os.dup(sys.stderr.fileno())
359
 
    os.dup2(null, sys.stderr.fileno())
360
 
    os.close(null)
361
 
    try:
362
 
        try:
363
 
            mandos_clients = { path: ifs_and_props[client_interface]
364
 
                               for path, ifs_and_props in
365
 
                               mandos_serv_object_manager
366
 
                               .GetManagedObjects().items()
367
 
                               if client_interface in ifs_and_props }
368
 
        finally:
369
 
            #restore stderr
370
 
            os.dup2(stderrcopy, sys.stderr.fileno())
371
 
            os.close(stderrcopy)
372
 
    except dbus.exceptions.DBusException as e:
373
 
        print("Access denied: Accessing mandos server through D-Bus: {}"
374
 
              .format(e), file=sys.stderr)
375
 
        sys.exit(1)
376
 
    
377
 
    # Compile dict of (clients: properties) to process
378
 
    clients={}
379
 
    
380
 
    if options.all or not options.client:
381
 
        clients = { bus.get_object(busname, path): properties
382
 
                    for path, properties in mandos_clients.items() }
383
 
    else:
384
 
        for name in options.client:
385
 
            for path, client in mandos_clients.items():
386
 
                if client["Name"] == name:
387
 
                    client_objc = bus.get_object(busname, path)
388
 
                    clients[client_objc] = client
389
 
                    break
390
 
            else:
391
 
                print("Client not found on server: {!r}"
392
 
                      .format(name), file=sys.stderr)
393
 
                sys.exit(1)
394
 
    
395
 
    if not has_actions(options) and clients:
396
 
        if options.verbose or options.dump_json:
397
 
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
398
 
                        "Created", "Interval", "Host", "Fingerprint",
399
 
                        "CheckerRunning", "LastEnabled",
400
 
                        "ApprovalPending", "ApprovedByDefault",
401
 
                        "LastApprovalRequest", "ApprovalDelay",
402
 
                        "ApprovalDuration", "Checker",
403
 
                        "ExtendedTimeout")
404
 
        else:
405
 
            keywords = defaultkeywords
406
 
        
407
 
        if options.dump_json:
408
 
            json.dump({client["Name"]: {key: client[key]
409
 
                                        for key in keywords }
410
 
                       for client in clients.values() },
411
 
                      fp = sys.stdout, indent = 4,
412
 
                      separators = (',', ': '))
413
 
            print()
414
 
        else:
415
 
            print_clients(clients.values(), keywords)
416
 
    else:
417
 
        # Process each client in the list by all selected options
418
 
        for client in clients:
419
 
            
420
 
            def set_client_prop(prop, value):
421
 
                """Set a Client D-Bus property"""
422
 
                client.Set(client_interface, prop, value,
423
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
424
 
            
425
 
            def set_client_prop_ms(prop, value):
426
 
                """Set a Client D-Bus property, converted
427
 
                from a string to milliseconds."""
428
 
                set_client_prop(prop,
429
 
                                string_to_delta(value).total_seconds()
430
 
                                * 1000)
431
 
            
432
 
            if options.remove:
433
 
                mandos_serv.RemoveClient(client.__dbus_object_path__)
434
 
            if options.enable:
435
 
                set_client_prop("Enabled", dbus.Boolean(True))
436
 
            if options.disable:
437
 
                set_client_prop("Enabled", dbus.Boolean(False))
438
 
            if options.bump_timeout:
439
 
                set_client_prop("LastCheckedOK", "")
440
 
            if options.start_checker:
441
 
                set_client_prop("CheckerRunning", dbus.Boolean(True))
442
 
            if options.stop_checker:
443
 
                set_client_prop("CheckerRunning", dbus.Boolean(False))
444
 
            if options.is_enabled:
445
 
                sys.exit(0 if client.Get(client_interface,
446
 
                                         "Enabled",
447
 
                                         dbus_interface=
448
 
                                         dbus.PROPERTIES_IFACE)
449
 
                         else 1)
450
 
            if options.checker is not None:
451
 
                set_client_prop("Checker", options.checker)
452
 
            if options.host is not None:
453
 
                set_client_prop("Host", options.host)
454
 
            if options.interval is not None:
455
 
                set_client_prop_ms("Interval", options.interval)
456
 
            if options.approval_delay is not None:
457
 
                set_client_prop_ms("ApprovalDelay",
458
 
                                   options.approval_delay)
459
 
            if options.approval_duration is not None:
460
 
                set_client_prop_ms("ApprovalDuration",
461
 
                                   options.approval_duration)
462
 
            if options.timeout is not None:
463
 
                set_client_prop_ms("Timeout", options.timeout)
464
 
            if options.extended_timeout is not None:
465
 
                set_client_prop_ms("ExtendedTimeout",
466
 
                                   options.extended_timeout)
467
 
            if options.secret is not None:
468
 
                set_client_prop("Secret",
469
 
                                dbus.ByteArray(options.secret.read()))
470
 
            if options.approved_by_default is not None:
471
 
                set_client_prop("ApprovedByDefault",
472
 
                                dbus.Boolean(options
473
 
                                             .approved_by_default))
474
 
            if options.approve:
475
 
                client.Approve(dbus.Boolean(True),
476
 
                               dbus_interface=client_interface)
477
 
            elif options.deny:
478
 
                client.Approve(dbus.Boolean(False),
479
 
                               dbus_interface=client_interface)
480
 
 
481
 
 
482
 
if __name__ == "__main__":
483
 
    main()