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  • Committer: Teddy Hogeborn
  • Date: 2016-06-28 18:46:40 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 350.
  • Revision ID: teddy@recompile.se-20160628184640-22uh54op9nw0908b
mandos-ctl: Dump booleans as booleans in --dump-json output.

* mandos-ctl (main): Detect dbus.Boolean objects and recast them to
                     regular Python bool() objects to make them show
                     as boolean values in dump output.

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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
}
 
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:
 
409
                                        bool(client[key])
 
410
                                        if isinstance(client[key],
 
411
                                                      dbus.Boolean)
 
412
                                        else client[key]
 
413
                                        for key in keywords }
 
414
                       for client in clients.values() },
 
415
                      fp = sys.stdout, indent = 4,
 
416
                      separators = (',', ': '))
 
417
            print()
 
418
        else:
 
419
            print_clients(clients.values(), keywords)
 
420
    else:
 
421
        # Process each client in the list by all selected options
 
422
        for client in clients:
 
423
            
 
424
            def set_client_prop(prop, value):
 
425
                """Set a Client D-Bus property"""
 
426
                client.Set(client_interface, prop, value,
 
427
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
428
            
 
429
            def set_client_prop_ms(prop, value):
 
430
                """Set a Client D-Bus property, converted
 
431
                from a string to milliseconds."""
 
432
                set_client_prop(prop,
 
433
                                string_to_delta(value).total_seconds()
 
434
                                * 1000)
 
435
            
 
436
            if options.remove:
 
437
                mandos_serv.RemoveClient(client.__dbus_object_path__)
 
438
            if options.enable:
 
439
                set_client_prop("Enabled", dbus.Boolean(True))
 
440
            if options.disable:
 
441
                set_client_prop("Enabled", dbus.Boolean(False))
 
442
            if options.bump_timeout:
 
443
                set_client_prop("LastCheckedOK", "")
 
444
            if options.start_checker:
 
445
                set_client_prop("CheckerRunning", dbus.Boolean(True))
 
446
            if options.stop_checker:
 
447
                set_client_prop("CheckerRunning", dbus.Boolean(False))
 
448
            if options.is_enabled:
 
449
                sys.exit(0 if client.Get(client_interface,
 
450
                                         "Enabled",
 
451
                                         dbus_interface=
 
452
                                         dbus.PROPERTIES_IFACE)
 
453
                         else 1)
 
454
            if options.checker is not None:
 
455
                set_client_prop("Checker", options.checker)
 
456
            if options.host is not None:
 
457
                set_client_prop("Host", options.host)
 
458
            if options.interval is not None:
 
459
                set_client_prop_ms("Interval", options.interval)
 
460
            if options.approval_delay is not None:
 
461
                set_client_prop_ms("ApprovalDelay",
 
462
                                   options.approval_delay)
 
463
            if options.approval_duration is not None:
 
464
                set_client_prop_ms("ApprovalDuration",
 
465
                                   options.approval_duration)
 
466
            if options.timeout is not None:
 
467
                set_client_prop_ms("Timeout", options.timeout)
 
468
            if options.extended_timeout is not None:
 
469
                set_client_prop_ms("ExtendedTimeout",
 
470
                                   options.extended_timeout)
 
471
            if options.secret is not None:
 
472
                set_client_prop("Secret",
 
473
                                dbus.ByteArray(options.secret.read()))
 
474
            if options.approved_by_default is not None:
 
475
                set_client_prop("ApprovedByDefault",
 
476
                                dbus.Boolean(options
 
477
                                             .approved_by_default))
 
478
            if options.approve:
 
479
                client.Approve(dbus.Boolean(True),
 
480
                               dbus_interface=client_interface)
 
481
            elif options.deny:
 
482
                client.Approve(dbus.Boolean(False),
 
483
                               dbus_interface=client_interface)
 
484
 
 
485
 
 
486
if __name__ == "__main__":
 
487
    main()