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  • Committer: Teddy Hogeborn
  • Date: 2008-07-22 06:25:35 UTC
  • mfrom: (24.1.2 mandos)
  • Revision ID: teddy@fukt.bsnet.se-20080722062535-whz5do0b3dzw6m08
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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
 
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
 
    "Expires": "Expires",
70
 
    "LastCheckerStatus": "Last Checker Status",
71
 
}
72
 
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
73
 
domain = "se.recompile"
74
 
busname = domain + ".Mandos"
75
 
server_path = "/"
76
 
server_interface = domain + ".Mandos"
77
 
client_interface = domain + ".Mandos.Client"
78
 
version = "1.7.10"
79
 
 
80
 
 
81
 
try:
82
 
    dbus.OBJECT_MANAGER_IFACE
83
 
except AttributeError:
84
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
85
 
 
86
 
def milliseconds_to_string(ms):
87
 
    td = datetime.timedelta(0, 0, 0, ms)
88
 
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}".format(
89
 
        days = "{}T".format(td.days) if td.days else "",
90
 
        hours = td.seconds // 3600,
91
 
        minutes = (td.seconds % 3600) // 60,
92
 
        seconds = td.seconds % 60))
93
 
 
94
 
 
95
 
def rfc3339_duration_to_delta(duration):
96
 
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
97
 
    
98
 
    >>> rfc3339_duration_to_delta("P7D")
99
 
    datetime.timedelta(7)
100
 
    >>> rfc3339_duration_to_delta("PT60S")
101
 
    datetime.timedelta(0, 60)
102
 
    >>> rfc3339_duration_to_delta("PT60M")
103
 
    datetime.timedelta(0, 3600)
104
 
    >>> rfc3339_duration_to_delta("PT24H")
105
 
    datetime.timedelta(1)
106
 
    >>> rfc3339_duration_to_delta("P1W")
107
 
    datetime.timedelta(7)
108
 
    >>> rfc3339_duration_to_delta("PT5M30S")
109
 
    datetime.timedelta(0, 330)
110
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
111
 
    datetime.timedelta(1, 200)
112
 
    """
113
 
    
114
 
    # Parsing an RFC 3339 duration with regular expressions is not
115
 
    # possible - there would have to be multiple places for the same
116
 
    # values, like seconds.  The current code, while more esoteric, is
117
 
    # cleaner without depending on a parsing library.  If Python had a
118
 
    # built-in library for parsing we would use it, but we'd like to
119
 
    # avoid excessive use of external libraries.
120
 
    
121
 
    # New type for defining tokens, syntax, and semantics all-in-one
122
 
    Token = collections.namedtuple("Token", (
123
 
        "regexp",  # To match token; if "value" is not None, must have
124
 
                   # a "group" containing digits
125
 
        "value",   # datetime.timedelta or None
126
 
        "followers"))           # Tokens valid after this token
127
 
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
128
 
    # the "duration" ABNF definition in RFC 3339, Appendix A.
129
 
    token_end = Token(re.compile(r"$"), None, frozenset())
130
 
    token_second = Token(re.compile(r"(\d+)S"),
131
 
                         datetime.timedelta(seconds=1),
132
 
                         frozenset((token_end, )))
133
 
    token_minute = Token(re.compile(r"(\d+)M"),
134
 
                         datetime.timedelta(minutes=1),
135
 
                         frozenset((token_second, token_end)))
136
 
    token_hour = Token(re.compile(r"(\d+)H"),
137
 
                       datetime.timedelta(hours=1),
138
 
                       frozenset((token_minute, token_end)))
139
 
    token_time = Token(re.compile(r"T"),
140
 
                       None,
141
 
                       frozenset((token_hour, token_minute,
142
 
                                  token_second)))
143
 
    token_day = Token(re.compile(r"(\d+)D"),
144
 
                      datetime.timedelta(days=1),
145
 
                      frozenset((token_time, token_end)))
146
 
    token_month = Token(re.compile(r"(\d+)M"),
147
 
                        datetime.timedelta(weeks=4),
148
 
                        frozenset((token_day, token_end)))
149
 
    token_year = Token(re.compile(r"(\d+)Y"),
150
 
                       datetime.timedelta(weeks=52),
151
 
                       frozenset((token_month, token_end)))
152
 
    token_week = Token(re.compile(r"(\d+)W"),
153
 
                       datetime.timedelta(weeks=1),
154
 
                       frozenset((token_end, )))
155
 
    token_duration = Token(re.compile(r"P"), None,
156
 
                           frozenset((token_year, token_month,
157
 
                                      token_day, token_time,
158
 
                                      token_week)))
159
 
    # Define starting values
160
 
    value = datetime.timedelta() # Value so far
161
 
    found_token = None
162
 
    followers = frozenset((token_duration, )) # Following valid tokens
163
 
    s = duration                # String left to parse
164
 
    # Loop until end token is found
165
 
    while found_token is not token_end:
166
 
        # Search for any currently valid tokens
167
 
        for token in followers:
168
 
            match = token.regexp.match(s)
169
 
            if match is not None:
170
 
                # Token found
171
 
                if token.value is not None:
172
 
                    # Value found, parse digits
173
 
                    factor = int(match.group(1), 10)
174
 
                    # Add to value so far
175
 
                    value += factor * token.value
176
 
                # Strip token from string
177
 
                s = token.regexp.sub("", s, 1)
178
 
                # Go to found token
179
 
                found_token = token
180
 
                # Set valid next tokens
181
 
                followers = found_token.followers
182
 
                break
183
 
        else:
184
 
            # No currently valid tokens were found
185
 
            raise ValueError("Invalid RFC 3339 duration: {!r}"
186
 
                             .format(duration))
187
 
    # End token found
188
 
    return value
189
 
 
190
 
 
191
 
def string_to_delta(interval):
192
 
    """Parse a string and return a datetime.timedelta
193
 
    
194
 
    >>> string_to_delta('7d')
195
 
    datetime.timedelta(7)
196
 
    >>> string_to_delta('60s')
197
 
    datetime.timedelta(0, 60)
198
 
    >>> string_to_delta('60m')
199
 
    datetime.timedelta(0, 3600)
200
 
    >>> string_to_delta('24h')
201
 
    datetime.timedelta(1)
202
 
    >>> string_to_delta('1w')
203
 
    datetime.timedelta(7)
204
 
    >>> string_to_delta('5m 30s')
205
 
    datetime.timedelta(0, 330)
206
 
    """
207
 
    
208
 
    try:
209
 
        return rfc3339_duration_to_delta(interval)
210
 
    except ValueError:
211
 
        pass
212
 
    
213
 
    value = datetime.timedelta(0)
214
 
    regexp = re.compile(r"(\d+)([dsmhw]?)")
215
 
    
216
 
    for num, suffix in regexp.findall(interval):
217
 
        if suffix == "d":
218
 
            value += datetime.timedelta(int(num))
219
 
        elif suffix == "s":
220
 
            value += datetime.timedelta(0, int(num))
221
 
        elif suffix == "m":
222
 
            value += datetime.timedelta(0, 0, 0, 0, int(num))
223
 
        elif suffix == "h":
224
 
            value += datetime.timedelta(0, 0, 0, 0, 0, int(num))
225
 
        elif suffix == "w":
226
 
            value += datetime.timedelta(0, 0, 0, 0, 0, 0, int(num))
227
 
        elif suffix == "":
228
 
            value += datetime.timedelta(0, 0, 0, int(num))
229
 
    return value
230
 
 
231
 
 
232
 
def print_clients(clients, keywords):
233
 
    def valuetostring(value, keyword):
234
 
        if type(value) is dbus.Boolean:
235
 
            return "Yes" if value else "No"
236
 
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
237
 
                       "ApprovalDuration", "ExtendedTimeout"):
238
 
            return milliseconds_to_string(value)
239
 
        return str(value)
240
 
    
241
 
    # Create format string to print table rows
242
 
    format_string = " ".join("{{{key}:{width}}}".format(
243
 
        width = max(len(tablewords[key]),
244
 
                    max(len(valuetostring(client[key], key))
245
 
                        for client in clients)),
246
 
        key = key)
247
 
                             for key in keywords)
248
 
    # Print header line
249
 
    print(format_string.format(**tablewords))
250
 
    for client in clients:
251
 
        print(format_string.format(**{
252
 
            key: valuetostring(client[key], key)
253
 
            for key in keywords }))
254
 
 
255
 
 
256
 
def has_actions(options):
257
 
    return any((options.enable,
258
 
                options.disable,
259
 
                options.bump_timeout,
260
 
                options.start_checker,
261
 
                options.stop_checker,
262
 
                options.is_enabled,
263
 
                options.remove,
264
 
                options.checker is not None,
265
 
                options.timeout is not None,
266
 
                options.extended_timeout is not None,
267
 
                options.interval is not None,
268
 
                options.approved_by_default is not None,
269
 
                options.approval_delay is not None,
270
 
                options.approval_duration is not None,
271
 
                options.host is not None,
272
 
                options.secret is not None,
273
 
                options.approve,
274
 
                options.deny))
275
 
 
276
 
 
277
 
def main():
278
 
    parser = argparse.ArgumentParser()
279
 
    parser.add_argument("--version", action="version",
280
 
                        version = "%(prog)s {}".format(version),
281
 
                        help="show version number and exit")
282
 
    parser.add_argument("-a", "--all", action="store_true",
283
 
                        help="Select all clients")
284
 
    parser.add_argument("-v", "--verbose", action="store_true",
285
 
                        help="Print all fields")
286
 
    parser.add_argument("-j", "--dump-json", action="store_true",
287
 
                        help="Dump client data in JSON format")
288
 
    parser.add_argument("-e", "--enable", action="store_true",
289
 
                        help="Enable client")
290
 
    parser.add_argument("-d", "--disable", action="store_true",
291
 
                        help="disable client")
292
 
    parser.add_argument("-b", "--bump-timeout", action="store_true",
293
 
                        help="Bump timeout for client")
294
 
    parser.add_argument("--start-checker", action="store_true",
295
 
                        help="Start checker for client")
296
 
    parser.add_argument("--stop-checker", action="store_true",
297
 
                        help="Stop checker for client")
298
 
    parser.add_argument("-V", "--is-enabled", action="store_true",
299
 
                        help="Check if client is enabled")
300
 
    parser.add_argument("-r", "--remove", action="store_true",
301
 
                        help="Remove client")
302
 
    parser.add_argument("-c", "--checker",
303
 
                        help="Set checker command for client")
304
 
    parser.add_argument("-t", "--timeout",
305
 
                        help="Set timeout for client")
306
 
    parser.add_argument("--extended-timeout",
307
 
                        help="Set extended timeout for client")
308
 
    parser.add_argument("-i", "--interval",
309
 
                        help="Set checker interval for client")
310
 
    parser.add_argument("--approve-by-default", action="store_true",
311
 
                        default=None, dest="approved_by_default",
312
 
                        help="Set client to be approved by default")
313
 
    parser.add_argument("--deny-by-default", action="store_false",
314
 
                        dest="approved_by_default",
315
 
                        help="Set client to be denied by default")
316
 
    parser.add_argument("--approval-delay",
317
 
                        help="Set delay before client approve/deny")
318
 
    parser.add_argument("--approval-duration",
319
 
                        help="Set duration of one client approval")
320
 
    parser.add_argument("-H", "--host", help="Set host for client")
321
 
    parser.add_argument("-s", "--secret",
322
 
                        type=argparse.FileType(mode="rb"),
323
 
                        help="Set password blob (file) for client")
324
 
    parser.add_argument("-A", "--approve", action="store_true",
325
 
                        help="Approve any current client request")
326
 
    parser.add_argument("-D", "--deny", action="store_true",
327
 
                        help="Deny any current client request")
328
 
    parser.add_argument("--check", action="store_true",
329
 
                        help="Run self-test")
330
 
    parser.add_argument("client", nargs="*", help="Client name")
331
 
    options = parser.parse_args()
332
 
    
333
 
    if has_actions(options) and not (options.client or options.all):
334
 
        parser.error("Options require clients names or --all.")
335
 
    if options.verbose and has_actions(options):
336
 
        parser.error("--verbose can only be used alone.")
337
 
    if options.dump_json and (options.verbose or has_actions(options)):
338
 
        parser.error("--dump-json can only be used alone.")
339
 
    if options.all and not has_actions(options):
340
 
        parser.error("--all requires an action.")
341
 
    
342
 
    if options.check:
343
 
        fail_count, test_count = doctest.testmod()
344
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
345
 
    
346
 
    try:
347
 
        bus = dbus.SystemBus()
348
 
        mandos_dbus_objc = bus.get_object(busname, server_path)
349
 
    except dbus.exceptions.DBusException:
350
 
        print("Could not connect to Mandos server", file=sys.stderr)
351
 
        sys.exit(1)
352
 
    
353
 
    mandos_serv = dbus.Interface(mandos_dbus_objc,
354
 
                                 dbus_interface = server_interface)
355
 
    mandos_serv_object_manager = dbus.Interface(
356
 
        mandos_dbus_objc, dbus_interface = dbus.OBJECT_MANAGER_IFACE)
357
 
    
358
 
    #block stderr since dbus library prints to stderr
359
 
    null = os.open(os.path.devnull, os.O_RDWR)
360
 
    stderrcopy = os.dup(sys.stderr.fileno())
361
 
    os.dup2(null, sys.stderr.fileno())
362
 
    os.close(null)
363
 
    try:
364
 
        try:
365
 
            mandos_clients = { path: ifs_and_props[client_interface]
366
 
                               for path, ifs_and_props in
367
 
                               mandos_serv_object_manager
368
 
                               .GetManagedObjects().items()
369
 
                               if client_interface in ifs_and_props }
370
 
        finally:
371
 
            #restore stderr
372
 
            os.dup2(stderrcopy, sys.stderr.fileno())
373
 
            os.close(stderrcopy)
374
 
    except dbus.exceptions.DBusException as e:
375
 
        print("Access denied: Accessing mandos server through D-Bus: {}"
376
 
              .format(e), file=sys.stderr)
377
 
        sys.exit(1)
378
 
    
379
 
    # Compile dict of (clients: properties) to process
380
 
    clients={}
381
 
    
382
 
    if options.all or not options.client:
383
 
        clients = { bus.get_object(busname, path): properties
384
 
                    for path, properties in mandos_clients.items() }
385
 
    else:
386
 
        for name in options.client:
387
 
            for path, client in mandos_clients.items():
388
 
                if client["Name"] == name:
389
 
                    client_objc = bus.get_object(busname, path)
390
 
                    clients[client_objc] = client
391
 
                    break
392
 
            else:
393
 
                print("Client not found on server: {!r}"
394
 
                      .format(name), file=sys.stderr)
395
 
                sys.exit(1)
396
 
    
397
 
    if not has_actions(options) and clients:
398
 
        if options.verbose or options.dump_json:
399
 
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
400
 
                        "Created", "Interval", "Host", "Fingerprint",
401
 
                        "CheckerRunning", "LastEnabled",
402
 
                        "ApprovalPending", "ApprovedByDefault",
403
 
                        "LastApprovalRequest", "ApprovalDelay",
404
 
                        "ApprovalDuration", "Checker",
405
 
                        "ExtendedTimeout", "Expires",
406
 
                        "LastCheckerStatus")
407
 
        else:
408
 
            keywords = defaultkeywords
409
 
        
410
 
        if options.dump_json:
411
 
            json.dump({client["Name"]: {key:
412
 
                                        bool(client[key])
413
 
                                        if isinstance(client[key],
414
 
                                                      dbus.Boolean)
415
 
                                        else client[key]
416
 
                                        for key in keywords }
417
 
                       for client in clients.values() },
418
 
                      fp = sys.stdout, indent = 4,
419
 
                      separators = (',', ': '))
420
 
            print()
421
 
        else:
422
 
            print_clients(clients.values(), keywords)
423
 
    else:
424
 
        # Process each client in the list by all selected options
425
 
        for client in clients:
426
 
            
427
 
            def set_client_prop(prop, value):
428
 
                """Set a Client D-Bus property"""
429
 
                client.Set(client_interface, prop, value,
430
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
431
 
            
432
 
            def set_client_prop_ms(prop, value):
433
 
                """Set a Client D-Bus property, converted
434
 
                from a string to milliseconds."""
435
 
                set_client_prop(prop,
436
 
                                string_to_delta(value).total_seconds()
437
 
                                * 1000)
438
 
            
439
 
            if options.remove:
440
 
                mandos_serv.RemoveClient(client.__dbus_object_path__)
441
 
            if options.enable:
442
 
                set_client_prop("Enabled", dbus.Boolean(True))
443
 
            if options.disable:
444
 
                set_client_prop("Enabled", dbus.Boolean(False))
445
 
            if options.bump_timeout:
446
 
                set_client_prop("LastCheckedOK", "")
447
 
            if options.start_checker:
448
 
                set_client_prop("CheckerRunning", dbus.Boolean(True))
449
 
            if options.stop_checker:
450
 
                set_client_prop("CheckerRunning", dbus.Boolean(False))
451
 
            if options.is_enabled:
452
 
                sys.exit(0 if client.Get(client_interface,
453
 
                                         "Enabled",
454
 
                                         dbus_interface=
455
 
                                         dbus.PROPERTIES_IFACE)
456
 
                         else 1)
457
 
            if options.checker is not None:
458
 
                set_client_prop("Checker", options.checker)
459
 
            if options.host is not None:
460
 
                set_client_prop("Host", options.host)
461
 
            if options.interval is not None:
462
 
                set_client_prop_ms("Interval", options.interval)
463
 
            if options.approval_delay is not None:
464
 
                set_client_prop_ms("ApprovalDelay",
465
 
                                   options.approval_delay)
466
 
            if options.approval_duration is not None:
467
 
                set_client_prop_ms("ApprovalDuration",
468
 
                                   options.approval_duration)
469
 
            if options.timeout is not None:
470
 
                set_client_prop_ms("Timeout", options.timeout)
471
 
            if options.extended_timeout is not None:
472
 
                set_client_prop_ms("ExtendedTimeout",
473
 
                                   options.extended_timeout)
474
 
            if options.secret is not None:
475
 
                set_client_prop("Secret",
476
 
                                dbus.ByteArray(options.secret.read()))
477
 
            if options.approved_by_default is not None:
478
 
                set_client_prop("ApprovedByDefault",
479
 
                                dbus.Boolean(options
480
 
                                             .approved_by_default))
481
 
            if options.approve:
482
 
                client.Approve(dbus.Boolean(True),
483
 
                               dbus_interface=client_interface)
484
 
            elif options.deny:
485
 
                client.Approve(dbus.Boolean(False),
486
 
                               dbus_interface=client_interface)
487
 
 
488
 
 
489
 
if __name__ == "__main__":
490
 
    main()