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  • Committer: Björn Påhlsson
  • Date: 2008-08-14 01:32:34 UTC
  • mto: (237.7.1 mandos) (24.1.154 mandos)
  • mto: This revision was merged to the branch mainline in revision 75.
  • Revision ID: belorn@braxen-20080814013234-qs0s608s3gxwb5t7
changed from using strtok to strsep

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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 © 2008-2015 Teddy Hogeborn
7
 
# Copyright © 2008-2015 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 = "1.6.9"
76
 
 
77
 
 
78
 
def milliseconds_to_string(ms):
79
 
    td = datetime.timedelta(0, 0, 0, ms)
80
 
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}".format(
81
 
        days = "{}T".format(td.days) if td.days else "",
82
 
        hours = td.seconds // 3600,
83
 
        minutes = (td.seconds % 3600) // 60,
84
 
        seconds = td.seconds % 60))
85
 
 
86
 
 
87
 
def rfc3339_duration_to_delta(duration):
88
 
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
89
 
    
90
 
    >>> rfc3339_duration_to_delta("P7D")
91
 
    datetime.timedelta(7)
92
 
    >>> rfc3339_duration_to_delta("PT60S")
93
 
    datetime.timedelta(0, 60)
94
 
    >>> rfc3339_duration_to_delta("PT60M")
95
 
    datetime.timedelta(0, 3600)
96
 
    >>> rfc3339_duration_to_delta("PT24H")
97
 
    datetime.timedelta(1)
98
 
    >>> rfc3339_duration_to_delta("P1W")
99
 
    datetime.timedelta(7)
100
 
    >>> rfc3339_duration_to_delta("PT5M30S")
101
 
    datetime.timedelta(0, 330)
102
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
103
 
    datetime.timedelta(1, 200)
104
 
    """
105
 
    
106
 
    # Parsing an RFC 3339 duration with regular expressions is not
107
 
    # possible - there would have to be multiple places for the same
108
 
    # values, like seconds.  The current code, while more esoteric, is
109
 
    # cleaner without depending on a parsing library.  If Python had a
110
 
    # built-in library for parsing we would use it, but we'd like to
111
 
    # avoid excessive use of external libraries.
112
 
    
113
 
    # New type for defining tokens, syntax, and semantics all-in-one
114
 
    Token = collections.namedtuple("Token", (
115
 
        "regexp",  # To match token; if "value" is not None, must have
116
 
                   # a "group" containing digits
117
 
        "value",   # datetime.timedelta or None
118
 
        "followers"))           # Tokens valid after this token
119
 
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
120
 
    # the "duration" ABNF definition in RFC 3339, Appendix A.
121
 
    token_end = Token(re.compile(r"$"), None, frozenset())
122
 
    token_second = Token(re.compile(r"(\d+)S"),
123
 
                         datetime.timedelta(seconds=1),
124
 
                         frozenset((token_end, )))
125
 
    token_minute = Token(re.compile(r"(\d+)M"),
126
 
                         datetime.timedelta(minutes=1),
127
 
                         frozenset((token_second, token_end)))
128
 
    token_hour = Token(re.compile(r"(\d+)H"),
129
 
                       datetime.timedelta(hours=1),
130
 
                       frozenset((token_minute, token_end)))
131
 
    token_time = Token(re.compile(r"T"),
132
 
                       None,
133
 
                       frozenset((token_hour, token_minute,
134
 
                                  token_second)))
135
 
    token_day = Token(re.compile(r"(\d+)D"),
136
 
                      datetime.timedelta(days=1),
137
 
                      frozenset((token_time, token_end)))
138
 
    token_month = Token(re.compile(r"(\d+)M"),
139
 
                        datetime.timedelta(weeks=4),
140
 
                        frozenset((token_day, token_end)))
141
 
    token_year = Token(re.compile(r"(\d+)Y"),
142
 
                       datetime.timedelta(weeks=52),
143
 
                       frozenset((token_month, token_end)))
144
 
    token_week = Token(re.compile(r"(\d+)W"),
145
 
                       datetime.timedelta(weeks=1),
146
 
                       frozenset((token_end, )))
147
 
    token_duration = Token(re.compile(r"P"), None,
148
 
                           frozenset((token_year, token_month,
149
 
                                      token_day, token_time,
150
 
                                      token_week)))
151
 
    # Define starting values
152
 
    value = datetime.timedelta() # Value so far
153
 
    found_token = None
154
 
    followers = frozenset((token_duration, )) # Following valid tokens
155
 
    s = duration                # String left to parse
156
 
    # Loop until end token is found
157
 
    while found_token is not token_end:
158
 
        # Search for any currently valid tokens
159
 
        for token in followers:
160
 
            match = token.regexp.match(s)
161
 
            if match is not None:
162
 
                # Token found
163
 
                if token.value is not None:
164
 
                    # Value found, parse digits
165
 
                    factor = int(match.group(1), 10)
166
 
                    # Add to value so far
167
 
                    value += factor * token.value
168
 
                # Strip token from string
169
 
                s = token.regexp.sub("", s, 1)
170
 
                # Go to found token
171
 
                found_token = token
172
 
                # Set valid next tokens
173
 
                followers = found_token.followers
174
 
                break
175
 
        else:
176
 
            # No currently valid tokens were found
177
 
            raise ValueError("Invalid RFC 3339 duration: {!r}"
178
 
                             .format(duration))
179
 
    # End token found
180
 
    return value
181
 
 
182
 
 
183
 
def string_to_delta(interval):
184
 
    """Parse a string and return a datetime.timedelta
185
 
    
186
 
    >>> string_to_delta('7d')
187
 
    datetime.timedelta(7)
188
 
    >>> string_to_delta('60s')
189
 
    datetime.timedelta(0, 60)
190
 
    >>> string_to_delta('60m')
191
 
    datetime.timedelta(0, 3600)
192
 
    >>> string_to_delta('24h')
193
 
    datetime.timedelta(1)
194
 
    >>> string_to_delta('1w')
195
 
    datetime.timedelta(7)
196
 
    >>> string_to_delta('5m 30s')
197
 
    datetime.timedelta(0, 330)
198
 
    """
199
 
    
200
 
    try:
201
 
        return rfc3339_duration_to_delta(interval)
202
 
    except ValueError:
203
 
        pass
204
 
    
205
 
    value = datetime.timedelta(0)
206
 
    regexp = re.compile(r"(\d+)([dsmhw]?)")
207
 
    
208
 
    for num, suffix in regexp.findall(interval):
209
 
        if suffix == "d":
210
 
            value += datetime.timedelta(int(num))
211
 
        elif suffix == "s":
212
 
            value += datetime.timedelta(0, int(num))
213
 
        elif suffix == "m":
214
 
            value += datetime.timedelta(0, 0, 0, 0, int(num))
215
 
        elif suffix == "h":
216
 
            value += datetime.timedelta(0, 0, 0, 0, 0, int(num))
217
 
        elif suffix == "w":
218
 
            value += datetime.timedelta(0, 0, 0, 0, 0, 0, int(num))
219
 
        elif suffix == "":
220
 
            value += datetime.timedelta(0, 0, 0, int(num))
221
 
    return value
222
 
 
223
 
 
224
 
def print_clients(clients, keywords):
225
 
    def valuetostring(value, keyword):
226
 
        if type(value) is dbus.Boolean:
227
 
            return "Yes" if value else "No"
228
 
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
229
 
                       "ApprovalDuration", "ExtendedTimeout"):
230
 
            return milliseconds_to_string(value)
231
 
        return str(value)
232
 
    
233
 
    # Create format string to print table rows
234
 
    format_string = " ".join("{{{key}:{width}}}".format(
235
 
        width = max(len(tablewords[key]),
236
 
                    max(len(valuetostring(client[key], key))
237
 
                        for client in clients)),
238
 
        key = key)
239
 
                             for key in keywords)
240
 
    # Print header line
241
 
    print(format_string.format(**tablewords))
242
 
    for client in clients:
243
 
        print(format_string.format(**{
244
 
            key: valuetostring(client[key], key)
245
 
            for key in keywords }))
246
 
 
247
 
 
248
 
def has_actions(options):
249
 
    return any((options.enable,
250
 
                options.disable,
251
 
                options.bump_timeout,
252
 
                options.start_checker,
253
 
                options.stop_checker,
254
 
                options.is_enabled,
255
 
                options.remove,
256
 
                options.checker is not None,
257
 
                options.timeout is not None,
258
 
                options.extended_timeout is not None,
259
 
                options.interval is not None,
260
 
                options.approved_by_default is not None,
261
 
                options.approval_delay is not None,
262
 
                options.approval_duration is not None,
263
 
                options.host is not None,
264
 
                options.secret is not None,
265
 
                options.approve,
266
 
                options.deny))
267
 
 
268
 
 
269
 
def main():
270
 
    parser = argparse.ArgumentParser()
271
 
    parser.add_argument("--version", action="version",
272
 
                        version = "%(prog)s {}".format(version),
273
 
                        help="show version number and exit")
274
 
    parser.add_argument("-a", "--all", action="store_true",
275
 
                        help="Select all clients")
276
 
    parser.add_argument("-v", "--verbose", action="store_true",
277
 
                        help="Print all fields")
278
 
    parser.add_argument("-e", "--enable", action="store_true",
279
 
                        help="Enable client")
280
 
    parser.add_argument("-d", "--disable", action="store_true",
281
 
                        help="disable client")
282
 
    parser.add_argument("-b", "--bump-timeout", action="store_true",
283
 
                        help="Bump timeout for client")
284
 
    parser.add_argument("--start-checker", action="store_true",
285
 
                        help="Start checker for client")
286
 
    parser.add_argument("--stop-checker", action="store_true",
287
 
                        help="Stop checker for client")
288
 
    parser.add_argument("-V", "--is-enabled", action="store_true",
289
 
                        help="Check if client is enabled")
290
 
    parser.add_argument("-r", "--remove", action="store_true",
291
 
                        help="Remove client")
292
 
    parser.add_argument("-c", "--checker",
293
 
                        help="Set checker command for client")
294
 
    parser.add_argument("-t", "--timeout",
295
 
                        help="Set timeout for client")
296
 
    parser.add_argument("--extended-timeout",
297
 
                        help="Set extended timeout for client")
298
 
    parser.add_argument("-i", "--interval",
299
 
                        help="Set checker interval for client")
300
 
    parser.add_argument("--approve-by-default", action="store_true",
301
 
                        default=None, dest="approved_by_default",
302
 
                        help="Set client to be approved by default")
303
 
    parser.add_argument("--deny-by-default", action="store_false",
304
 
                        dest="approved_by_default",
305
 
                        help="Set client to be denied by default")
306
 
    parser.add_argument("--approval-delay",
307
 
                        help="Set delay before client approve/deny")
308
 
    parser.add_argument("--approval-duration",
309
 
                        help="Set duration of one client approval")
310
 
    parser.add_argument("-H", "--host", help="Set host for client")
311
 
    parser.add_argument("-s", "--secret",
312
 
                        type=argparse.FileType(mode="rb"),
313
 
                        help="Set password blob (file) for client")
314
 
    parser.add_argument("-A", "--approve", action="store_true",
315
 
                        help="Approve any current client request")
316
 
    parser.add_argument("-D", "--deny", action="store_true",
317
 
                        help="Deny any current client request")
318
 
    parser.add_argument("--check", action="store_true",
319
 
                        help="Run self-test")
320
 
    parser.add_argument("client", nargs="*", help="Client name")
321
 
    options = parser.parse_args()
322
 
    
323
 
    if has_actions(options) and not (options.client or options.all):
324
 
        parser.error("Options require clients names or --all.")
325
 
    if options.verbose and has_actions(options):
326
 
        parser.error("--verbose can only be used alone or with"
327
 
                     " --all.")
328
 
    if options.all and not has_actions(options):
329
 
        parser.error("--all requires an action.")
330
 
 
331
 
    if options.check:
332
 
        fail_count, test_count = doctest.testmod()
333
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
334
 
    
335
 
    try:
336
 
        bus = dbus.SystemBus()
337
 
        mandos_dbus_objc = bus.get_object(busname, server_path)
338
 
    except dbus.exceptions.DBusException:
339
 
        print("Could not connect to Mandos server", file=sys.stderr)
340
 
        sys.exit(1)
341
 
    
342
 
    mandos_serv = dbus.Interface(mandos_dbus_objc,
343
 
                                 dbus_interface = server_interface)
344
 
    
345
 
    #block stderr since dbus library prints to stderr
346
 
    null = os.open(os.path.devnull, os.O_RDWR)
347
 
    stderrcopy = os.dup(sys.stderr.fileno())
348
 
    os.dup2(null, sys.stderr.fileno())
349
 
    os.close(null)
350
 
    try:
351
 
        try:
352
 
            mandos_clients = mandos_serv.GetAllClientsWithProperties()
353
 
        finally:
354
 
            #restore stderr
355
 
            os.dup2(stderrcopy, sys.stderr.fileno())
356
 
            os.close(stderrcopy)
357
 
    except dbus.exceptions.DBusException:
358
 
        print("Access denied: Accessing mandos server through dbus.",
359
 
              file=sys.stderr)
360
 
        sys.exit(1)
361
 
    
362
 
    # Compile dict of (clients: properties) to process
363
 
    clients={}
364
 
    
365
 
    if options.all or not options.client:
366
 
        clients = { bus.get_object(busname, path): properties
367
 
                    for path, properties in mandos_clients.items() }
368
 
    else:
369
 
        for name in options.client:
370
 
            for path, client in mandos_clients.items():
371
 
                if client["Name"] == name:
372
 
                    client_objc = bus.get_object(busname, path)
373
 
                    clients[client_objc] = client
374
 
                    break
375
 
            else:
376
 
                print("Client not found on server: {!r}"
377
 
                      .format(name), file=sys.stderr)
378
 
                sys.exit(1)
379
 
    
380
 
    if not has_actions(options) and clients:
381
 
        if options.verbose:
382
 
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
383
 
                        "Created", "Interval", "Host", "Fingerprint",
384
 
                        "CheckerRunning", "LastEnabled",
385
 
                        "ApprovalPending", "ApprovedByDefault",
386
 
                        "LastApprovalRequest", "ApprovalDelay",
387
 
                        "ApprovalDuration", "Checker",
388
 
                        "ExtendedTimeout")
389
 
        else:
390
 
            keywords = defaultkeywords
391
 
        
392
 
        print_clients(clients.values(), keywords)
393
 
    else:
394
 
        # Process each client in the list by all selected options
395
 
        for client in clients:
396
 
            
397
 
            def set_client_prop(prop, value):
398
 
                """Set a Client D-Bus property"""
399
 
                client.Set(client_interface, prop, value,
400
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
401
 
            
402
 
            def set_client_prop_ms(prop, value):
403
 
                """Set a Client D-Bus property, converted
404
 
                from a string to milliseconds."""
405
 
                set_client_prop(prop,
406
 
                                string_to_delta(value).total_seconds()
407
 
                                * 1000)
408
 
            
409
 
            if options.remove:
410
 
                mandos_serv.RemoveClient(client.__dbus_object_path__)
411
 
            if options.enable:
412
 
                set_client_prop("Enabled", dbus.Boolean(True))
413
 
            if options.disable:
414
 
                set_client_prop("Enabled", dbus.Boolean(False))
415
 
            if options.bump_timeout:
416
 
                set_client_prop("LastCheckedOK", "")
417
 
            if options.start_checker:
418
 
                set_client_prop("CheckerRunning", dbus.Boolean(True))
419
 
            if options.stop_checker:
420
 
                set_client_prop("CheckerRunning", dbus.Boolean(False))
421
 
            if options.is_enabled:
422
 
                sys.exit(0 if client.Get(client_interface,
423
 
                                         "Enabled",
424
 
                                         dbus_interface=
425
 
                                         dbus.PROPERTIES_IFACE)
426
 
                         else 1)
427
 
            if options.checker is not None:
428
 
                set_client_prop("Checker", options.checker)
429
 
            if options.host is not None:
430
 
                set_client_prop("Host", options.host)
431
 
            if options.interval is not None:
432
 
                set_client_prop_ms("Interval", options.interval)
433
 
            if options.approval_delay is not None:
434
 
                set_client_prop_ms("ApprovalDelay",
435
 
                                   options.approval_delay)
436
 
            if options.approval_duration is not None:
437
 
                set_client_prop_ms("ApprovalDuration",
438
 
                                   options.approval_duration)
439
 
            if options.timeout is not None:
440
 
                set_client_prop_ms("Timeout", options.timeout)
441
 
            if options.extended_timeout is not None:
442
 
                set_client_prop_ms("ExtendedTimeout",
443
 
                                   options.extended_timeout)
444
 
            if options.secret is not None:
445
 
                set_client_prop("Secret",
446
 
                                dbus.ByteArray(options.secret.read()))
447
 
            if options.approved_by_default is not None:
448
 
                set_client_prop("ApprovedByDefault",
449
 
                                dbus.Boolean(options
450
 
                                             .approved_by_default))
451
 
            if options.approve:
452
 
                client.Approve(dbus.Boolean(True),
453
 
                               dbus_interface=client_interface)
454
 
            elif options.deny:
455
 
                client.Approve(dbus.Boolean(False),
456
 
                               dbus_interface=client_interface)
457
 
 
458
 
 
459
 
if __name__ == "__main__":
460
 
    main()