/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2011-07-15 01:07:51 UTC
  • Revision ID: teddy@fukt.bsnet.se-20110715010751-bh9rhcm6hv8f174e
* initramfs-tools-script: Bug fix: Add missing "--options" argument to
                          getopt.

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mandos-ctl
3
3
# 
4
4
# Mandos Monitor - Control and monitor the Mandos server
5
5
# 
6
 
# Copyright © 2008-2016 Teddy Hogeborn
7
 
# Copyright © 2008-2016 Björn Påhlsson
 
6
# Copyright © 2008-2010 Teddy Hogeborn
 
7
# Copyright © 2008-2010 Björn Påhlsson
8
8
# 
9
9
# This program is free software: you can redistribute it and/or modify
10
10
# it under the terms of the GNU General Public License as published by
17
17
#     GNU General Public License for more details.
18
18
# 
19
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/>.
 
20
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
22
21
# 
23
 
# Contact the authors at <mandos@recompile.se>.
 
22
# Contact the authors at <mandos@fukt.bsnet.se>.
24
23
# 
25
24
 
26
25
from __future__ import (division, absolute_import, print_function,
27
26
                        unicode_literals)
28
27
 
29
 
try:
30
 
    from future_builtins import *
31
 
except ImportError:
32
 
    pass
33
 
 
34
28
import sys
 
29
import dbus
35
30
import argparse
36
31
import locale
37
32
import datetime
38
33
import re
39
34
import os
40
 
import collections
41
 
import doctest
42
 
 
43
 
import dbus
44
 
 
45
 
if sys.version_info.major == 2:
46
 
    str = unicode
47
35
 
48
36
locale.setlocale(locale.LC_ALL, "")
49
37
 
64
52
    "ApprovalDelay": "Approval Delay",
65
53
    "ApprovalDuration": "Approval Duration",
66
54
    "Checker": "Checker",
67
 
    "ExtendedTimeout": "Extended Timeout"
68
 
}
 
55
    }
69
56
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
70
 
domain = "se.recompile"
 
57
domain = "se.bsnet.fukt"
71
58
busname = domain + ".Mandos"
72
59
server_path = "/"
73
60
server_interface = domain + ".Mandos"
74
61
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"
 
62
version = "1.3.0"
 
63
 
 
64
def timedelta_to_milliseconds(td):
 
65
    """Convert a datetime.timedelta object to milliseconds"""
 
66
    return ((td.days * 24 * 60 * 60 * 1000)
 
67
            + (td.seconds * 1000)
 
68
            + (td.microseconds // 1000))
82
69
 
83
70
def milliseconds_to_string(ms):
84
71
    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
 
 
 
72
    return ("%(days)s%(hours)02d:%(minutes)02d:%(seconds)02d"
 
73
            % { "days": "%dT" % td.days if td.days else "",
 
74
                "hours": td.seconds // 3600,
 
75
                "minutes": (td.seconds % 3600) // 60,
 
76
                "seconds": td.seconds % 60,
 
77
                })
187
78
 
188
79
def string_to_delta(interval):
189
80
    """Parse a string and return a datetime.timedelta
190
81
    
191
 
    >>> string_to_delta('7d')
 
82
    >>> string_to_delta("7d")
192
83
    datetime.timedelta(7)
193
 
    >>> string_to_delta('60s')
 
84
    >>> string_to_delta("60s")
194
85
    datetime.timedelta(0, 60)
195
 
    >>> string_to_delta('60m')
 
86
    >>> string_to_delta("60m")
196
87
    datetime.timedelta(0, 3600)
197
 
    >>> string_to_delta('24h')
 
88
    >>> string_to_delta("24h")
198
89
    datetime.timedelta(1)
199
 
    >>> string_to_delta('1w')
 
90
    >>> string_to_delta("1w")
200
91
    datetime.timedelta(7)
201
 
    >>> string_to_delta('5m 30s')
 
92
    >>> string_to_delta("5m 30s")
202
93
    datetime.timedelta(0, 330)
203
94
    """
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
 
 
 
95
    timevalue = datetime.timedelta(0)
 
96
    regexp = re.compile("\d+[dsmhw]")
 
97
    
 
98
    for s in regexp.findall(interval):
 
99
        try:
 
100
            suffix = unicode(s[-1])
 
101
            value = int(s[:-1])
 
102
            if suffix == "d":
 
103
                delta = datetime.timedelta(value)
 
104
            elif suffix == "s":
 
105
                delta = datetime.timedelta(0, value)
 
106
            elif suffix == "m":
 
107
                delta = datetime.timedelta(0, 0, 0, 0, value)
 
108
            elif suffix == "h":
 
109
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
 
110
            elif suffix == "w":
 
111
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
 
112
            else:
 
113
                raise ValueError
 
114
        except (ValueError, IndexError):
 
115
            raise ValueError
 
116
        timevalue += delta
 
117
    return timevalue
228
118
 
229
119
def print_clients(clients, keywords):
230
120
    def valuetostring(value, keyword):
231
121
        if type(value) is dbus.Boolean:
232
122
            return "Yes" if value else "No"
233
123
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
234
 
                       "ApprovalDuration", "ExtendedTimeout"):
 
124
                       "ApprovalDuration"):
235
125
            return milliseconds_to_string(value)
236
 
        return str(value)
 
126
        return unicode(value)
237
127
    
238
128
    # 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)
 
129
    format_string = " ".join("%%-%ds" %
 
130
                             max(len(tablewords[key]),
 
131
                                 max(len(valuetostring(client[key],
 
132
                                                       key))
 
133
                                     for client in
 
134
                                     clients))
244
135
                             for key in keywords)
245
136
    # Print header line
246
 
    print(format_string.format(**tablewords))
 
137
    print(format_string % tuple(tablewords[key] for key in keywords))
247
138
    for client in clients:
248
 
        print(format_string.format(**{
249
 
            key: valuetostring(client[key], key)
250
 
            for key in keywords }))
251
 
 
 
139
        print(format_string % tuple(valuetostring(client[key], key)
 
140
                                    for key in keywords))
252
141
 
253
142
def has_actions(options):
254
143
    return any((options.enable,
260
149
                options.remove,
261
150
                options.checker is not None,
262
151
                options.timeout is not None,
263
 
                options.extended_timeout is not None,
264
152
                options.interval is not None,
265
153
                options.approved_by_default is not None,
266
154
                options.approval_delay is not None,
270
158
                options.approve,
271
159
                options.deny))
272
160
 
273
 
 
274
161
def main():
275
162
    parser = argparse.ArgumentParser()
276
163
    parser.add_argument("--version", action="version",
277
 
                        version = "%(prog)s {}".format(version),
 
164
                        version = "%%prog %s" % version,
278
165
                        help="show version number and exit")
279
166
    parser.add_argument("-a", "--all", action="store_true",
280
167
                        help="Select all clients")
298
185
                        help="Set checker command for client")
299
186
    parser.add_argument("-t", "--timeout",
300
187
                        help="Set timeout for client")
301
 
    parser.add_argument("--extended-timeout",
302
 
                        help="Set extended timeout for client")
303
188
    parser.add_argument("-i", "--interval",
304
189
                        help="Set checker interval for client")
305
190
    parser.add_argument("--approve-by-default", action="store_true",
313
198
    parser.add_argument("--approval-duration",
314
199
                        help="Set duration of one client approval")
315
200
    parser.add_argument("-H", "--host", help="Set host for client")
316
 
    parser.add_argument("-s", "--secret",
317
 
                        type=argparse.FileType(mode="rb"),
 
201
    parser.add_argument("-s", "--secret", type=file,
318
202
                        help="Set password blob (file) for client")
319
203
    parser.add_argument("-A", "--approve", action="store_true",
320
204
                        help="Approve any current client request")
321
205
    parser.add_argument("-D", "--deny", action="store_true",
322
206
                        help="Deny any current client request")
323
 
    parser.add_argument("--check", action="store_true",
324
 
                        help="Run self-test")
325
207
    parser.add_argument("client", nargs="*", help="Client name")
326
208
    options = parser.parse_args()
327
209
    
328
 
    if has_actions(options) and not (options.client or options.all):
 
210
    if has_actions(options) and not options.client and not options.all:
329
211
        parser.error("Options require clients names or --all.")
330
212
    if options.verbose and has_actions(options):
331
213
        parser.error("--verbose can only be used alone or with"
332
214
                     " --all.")
333
215
    if options.all and not has_actions(options):
334
216
        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
217
    
340
218
    try:
341
219
        bus = dbus.SystemBus()
342
220
        mandos_dbus_objc = bus.get_object(busname, server_path)
343
221
    except dbus.exceptions.DBusException:
344
 
        print("Could not connect to Mandos server", file=sys.stderr)
 
222
        print("Could not connect to Mandos server",
 
223
              file=sys.stderr)
345
224
        sys.exit(1)
346
225
    
347
226
    mandos_serv = dbus.Interface(mandos_dbus_objc,
348
227
                                 dbus_interface = server_interface)
349
 
    mandos_serv_object_manager = dbus.Interface(
350
 
        mandos_dbus_objc, dbus_interface = dbus.OBJECT_MANAGER_IFACE)
351
228
    
352
229
    #block stderr since dbus library prints to stderr
353
230
    null = os.open(os.path.devnull, os.O_RDWR)
356
233
    os.close(null)
357
234
    try:
358
235
        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 }
 
236
            mandos_clients = mandos_serv.GetAllClientsWithProperties()
364
237
        finally:
365
238
            #restore stderr
366
239
            os.dup2(stderrcopy, sys.stderr.fileno())
367
240
            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)
 
241
    except dbus.exceptions.DBusException, e:
 
242
        print("Access denied: Accessing mandos server through dbus.",
 
243
              file=sys.stderr)
371
244
        sys.exit(1)
372
245
    
373
246
    # Compile dict of (clients: properties) to process
374
247
    clients={}
375
248
    
376
249
    if options.all or not options.client:
377
 
        clients = { bus.get_object(busname, path): properties
378
 
                    for path, properties in mandos_clients.items() }
 
250
        clients = dict((bus.get_object(busname, path), properties)
 
251
                       for path, properties in
 
252
                       mandos_clients.iteritems())
379
253
    else:
380
254
        for name in options.client:
381
 
            for path, client in mandos_clients.items():
 
255
            for path, client in mandos_clients.iteritems():
382
256
                if client["Name"] == name:
383
257
                    client_objc = bus.get_object(busname, path)
384
258
                    clients[client_objc] = client
385
259
                    break
386
260
            else:
387
 
                print("Client not found on server: {!r}"
388
 
                      .format(name), file=sys.stderr)
 
261
                print("Client not found on server: %r" % name,
 
262
                      file=sys.stderr)
389
263
                sys.exit(1)
390
264
    
391
265
    if not has_actions(options) and clients:
392
266
        if options.verbose:
393
 
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
394
 
                        "Created", "Interval", "Host", "Fingerprint",
395
 
                        "CheckerRunning", "LastEnabled",
396
 
                        "ApprovalPending", "ApprovedByDefault",
 
267
            keywords = ("Name", "Enabled", "Timeout",
 
268
                        "LastCheckedOK", "Created", "Interval",
 
269
                        "Host", "Fingerprint", "CheckerRunning",
 
270
                        "LastEnabled", "ApprovalPending",
 
271
                        "ApprovedByDefault",
397
272
                        "LastApprovalRequest", "ApprovalDelay",
398
 
                        "ApprovalDuration", "Checker",
399
 
                        "ExtendedTimeout")
 
273
                        "ApprovalDuration", "Checker")
400
274
        else:
401
275
            keywords = defaultkeywords
402
276
        
404
278
    else:
405
279
        # Process each client in the list by all selected options
406
280
        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
281
            if options.remove:
421
282
                mandos_serv.RemoveClient(client.__dbus_object_path__)
422
283
            if options.enable:
423
 
                set_client_prop("Enabled", dbus.Boolean(True))
 
284
                client.Enable(dbus_interface=client_interface)
424
285
            if options.disable:
425
 
                set_client_prop("Enabled", dbus.Boolean(False))
 
286
                client.Disable(dbus_interface=client_interface)
426
287
            if options.bump_timeout:
427
 
                set_client_prop("LastCheckedOK", "")
 
288
                client.CheckedOK(dbus_interface=client_interface)
428
289
            if options.start_checker:
429
 
                set_client_prop("CheckerRunning", dbus.Boolean(True))
 
290
                client.StartChecker(dbus_interface=client_interface)
430
291
            if options.stop_checker:
431
 
                set_client_prop("CheckerRunning", dbus.Boolean(False))
 
292
                client.StopChecker(dbus_interface=client_interface)
432
293
            if options.is_enabled:
433
294
                sys.exit(0 if client.Get(client_interface,
434
295
                                         "Enabled",
435
296
                                         dbus_interface=
436
297
                                         dbus.PROPERTIES_IFACE)
437
298
                         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()))
 
299
            if options.checker:
 
300
                client.Set(client_interface, "Checker",
 
301
                           options.checker,
 
302
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
303
            if options.host:
 
304
                client.Set(client_interface, "Host", options.host,
 
305
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
306
            if options.interval:
 
307
                client.Set(client_interface, "Interval",
 
308
                           timedelta_to_milliseconds
 
309
                           (string_to_delta(options.interval)),
 
310
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
311
            if options.approval_delay:
 
312
                client.Set(client_interface, "ApprovalDelay",
 
313
                           timedelta_to_milliseconds
 
314
                           (string_to_delta(options.
 
315
                                            approval_delay)),
 
316
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
317
            if options.approval_duration:
 
318
                client.Set(client_interface, "ApprovalDuration",
 
319
                           timedelta_to_milliseconds
 
320
                           (string_to_delta(options.
 
321
                                            approval_duration)),
 
322
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
323
            if options.timeout:
 
324
                client.Set(client_interface, "Timeout",
 
325
                           timedelta_to_milliseconds
 
326
                           (string_to_delta(options.timeout)),
 
327
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
328
            if options.secret:
 
329
                client.Set(client_interface, "Secret",
 
330
                           dbus.ByteArray(open(options.secret,
 
331
                                               "rb").read()),
 
332
                           dbus_interface=dbus.PROPERTIES_IFACE)
458
333
            if options.approved_by_default is not None:
459
 
                set_client_prop("ApprovedByDefault",
460
 
                                dbus.Boolean(options
461
 
                                             .approved_by_default))
 
334
                client.Set(client_interface, "ApprovedByDefault",
 
335
                           dbus.Boolean(options
 
336
                                        .approved_by_default),
 
337
                           dbus_interface=dbus.PROPERTIES_IFACE)
462
338
            if options.approve:
463
339
                client.Approve(dbus.Boolean(True),
464
340
                               dbus_interface=client_interface)
466
342
                client.Approve(dbus.Boolean(False),
467
343
                               dbus_interface=client_interface)
468
344
 
469
 
 
470
345
if __name__ == "__main__":
471
346
    main()