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  • Committer: Teddy Hogeborn
  • Date: 2018-08-19 14:06:55 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 368.
  • Revision ID: teddy@recompile.se-20180819140655-ghsl0d4jsx8xwg44
Move UMASK setting to more proper place

* Makefile (install-client-nokey): Also install new conf files
  "initramfs-tools-conf".
* debian/mandos-client.dirs: Add "usr/share/initramfs-tools/conf.d".
* initramfs-tools-conf: New file which sets UMASK.
* initramfs-tools-hook: Change comment to correctly state new location
  of UMASK setting.
* initramfs-tools-hook-conf: Remove UMASK setting.

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1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
 
3
#
4
4
# Mandos Monitor - Control and monitor the Mandos server
5
 
6
 
# Copyright © 2008-2012 Teddy Hogeborn
7
 
# Copyright © 2008-2012 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
 
5
#
 
6
# Copyright © 2008-2018 Teddy Hogeborn
 
7
# Copyright © 2008-2018 Björn Påhlsson
 
8
#
 
9
# This file is part of Mandos.
 
10
#
 
11
# Mandos is free software: you can redistribute it and/or modify it
 
12
# under the terms of the GNU General Public License as published by
11
13
# the Free Software Foundation, either version 3 of the License, or
12
14
# (at your option) any later version.
13
15
#
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
#     Mandos is distributed in the hope that it will be useful, but
 
17
#     WITHOUT ANY WARRANTY; without even the implied warranty of
16
18
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
19
#     GNU General Public License for more details.
18
 
 
20
#
19
21
# 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
 
 
22
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
23
#
23
24
# Contact the authors at <mandos@recompile.se>.
24
 
 
25
#
25
26
 
26
27
from __future__ import (division, absolute_import, print_function,
27
28
                        unicode_literals)
28
29
 
29
 
from future_builtins import *
 
30
try:
 
31
    from future_builtins import *
 
32
except ImportError:
 
33
    pass
30
34
 
31
35
import sys
32
 
import dbus
33
36
import argparse
34
37
import locale
35
38
import datetime
36
39
import re
37
40
import os
 
41
import collections
 
42
import json
 
43
 
 
44
import dbus
 
45
 
 
46
if sys.version_info.major == 2:
 
47
    str = unicode
38
48
 
39
49
locale.setlocale(locale.LC_ALL, "")
40
50
 
55
65
    "ApprovalDelay": "Approval Delay",
56
66
    "ApprovalDuration": "Approval Duration",
57
67
    "Checker": "Checker",
58
 
    "ExtendedTimeout" : "Extended Timeout"
59
 
    }
 
68
    "ExtendedTimeout": "Extended Timeout",
 
69
    "Expires": "Expires",
 
70
    "LastCheckerStatus": "Last Checker Status",
 
71
}
60
72
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
61
73
domain = "se.recompile"
62
74
busname = domain + ".Mandos"
63
75
server_path = "/"
64
76
server_interface = domain + ".Mandos"
65
77
client_interface = domain + ".Mandos.Client"
66
 
version = "1.5.3"
67
 
 
68
 
def timedelta_to_milliseconds(td):
69
 
    """Convert a datetime.timedelta object to milliseconds"""
70
 
    return ((td.days * 24 * 60 * 60 * 1000)
71
 
            + (td.seconds * 1000)
72
 
            + (td.microseconds // 1000))
 
78
version = "1.7.19"
 
79
 
 
80
 
 
81
try:
 
82
    dbus.OBJECT_MANAGER_IFACE
 
83
except AttributeError:
 
84
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
85
 
73
86
 
74
87
def milliseconds_to_string(ms):
75
88
    td = datetime.timedelta(0, 0, 0, ms)
76
89
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}"
77
 
            .format(days = "{0}T".format(td.days) if td.days else "",
78
 
                    hours = td.seconds // 3600,
79
 
                    minutes = (td.seconds % 3600) // 60,
80
 
                    seconds = td.seconds % 60,
81
 
                    ))
 
90
            .format(days="{}T".format(td.days) if td.days else "",
 
91
                    hours=td.seconds // 3600,
 
92
                    minutes=(td.seconds % 3600) // 60,
 
93
                    seconds=td.seconds % 60))
 
94
 
 
95
 
 
96
def rfc3339_duration_to_delta(duration):
 
97
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
 
98
 
 
99
    >>> rfc3339_duration_to_delta("P7D")
 
100
    datetime.timedelta(7)
 
101
    >>> rfc3339_duration_to_delta("PT60S")
 
102
    datetime.timedelta(0, 60)
 
103
    >>> rfc3339_duration_to_delta("PT60M")
 
104
    datetime.timedelta(0, 3600)
 
105
    >>> rfc3339_duration_to_delta("PT24H")
 
106
    datetime.timedelta(1)
 
107
    >>> rfc3339_duration_to_delta("P1W")
 
108
    datetime.timedelta(7)
 
109
    >>> rfc3339_duration_to_delta("PT5M30S")
 
110
    datetime.timedelta(0, 330)
 
111
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
112
    datetime.timedelta(1, 200)
 
113
    """
 
114
 
 
115
    # Parsing an RFC 3339 duration with regular expressions is not
 
116
    # possible - there would have to be multiple places for the same
 
117
    # values, like seconds.  The current code, while more esoteric, is
 
118
    # cleaner without depending on a parsing library.  If Python had a
 
119
    # built-in library for parsing we would use it, but we'd like to
 
120
    # avoid excessive use of external libraries.
 
121
 
 
122
    # New type for defining tokens, syntax, and semantics all-in-one
 
123
    Token = collections.namedtuple("Token", (
 
124
        "regexp",  # To match token; if "value" is not None, must have
 
125
                   # a "group" containing digits
 
126
        "value",   # datetime.timedelta or None
 
127
        "followers"))           # Tokens valid after this token
 
128
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
 
129
    # the "duration" ABNF definition in RFC 3339, Appendix A.
 
130
    token_end = Token(re.compile(r"$"), None, frozenset())
 
131
    token_second = Token(re.compile(r"(\d+)S"),
 
132
                         datetime.timedelta(seconds=1),
 
133
                         frozenset((token_end, )))
 
134
    token_minute = Token(re.compile(r"(\d+)M"),
 
135
                         datetime.timedelta(minutes=1),
 
136
                         frozenset((token_second, token_end)))
 
137
    token_hour = Token(re.compile(r"(\d+)H"),
 
138
                       datetime.timedelta(hours=1),
 
139
                       frozenset((token_minute, token_end)))
 
140
    token_time = Token(re.compile(r"T"),
 
141
                       None,
 
142
                       frozenset((token_hour, token_minute,
 
143
                                  token_second)))
 
144
    token_day = Token(re.compile(r"(\d+)D"),
 
145
                      datetime.timedelta(days=1),
 
146
                      frozenset((token_time, token_end)))
 
147
    token_month = Token(re.compile(r"(\d+)M"),
 
148
                        datetime.timedelta(weeks=4),
 
149
                        frozenset((token_day, token_end)))
 
150
    token_year = Token(re.compile(r"(\d+)Y"),
 
151
                       datetime.timedelta(weeks=52),
 
152
                       frozenset((token_month, token_end)))
 
153
    token_week = Token(re.compile(r"(\d+)W"),
 
154
                       datetime.timedelta(weeks=1),
 
155
                       frozenset((token_end, )))
 
156
    token_duration = Token(re.compile(r"P"), None,
 
157
                           frozenset((token_year, token_month,
 
158
                                      token_day, token_time,
 
159
                                      token_week)))
 
160
    # Define starting values:
 
161
    # Value so far
 
162
    value = datetime.timedelta()
 
163
    found_token = None
 
164
    # Following valid tokens
 
165
    followers = frozenset((token_duration, ))
 
166
    # String left to parse
 
167
    s = duration
 
168
    # Loop until end token is found
 
169
    while found_token is not token_end:
 
170
        # Search for any currently valid tokens
 
171
        for token in followers:
 
172
            match = token.regexp.match(s)
 
173
            if match is not None:
 
174
                # Token found
 
175
                if token.value is not None:
 
176
                    # Value found, parse digits
 
177
                    factor = int(match.group(1), 10)
 
178
                    # Add to value so far
 
179
                    value += factor * token.value
 
180
                # Strip token from string
 
181
                s = token.regexp.sub("", s, 1)
 
182
                # Go to found token
 
183
                found_token = token
 
184
                # Set valid next tokens
 
185
                followers = found_token.followers
 
186
                break
 
187
        else:
 
188
            # No currently valid tokens were found
 
189
            raise ValueError("Invalid RFC 3339 duration: {!r}"
 
190
                             .format(duration))
 
191
    # End token found
 
192
    return value
 
193
 
82
194
 
83
195
def string_to_delta(interval):
84
196
    """Parse a string and return a datetime.timedelta
85
 
    
86
 
    >>> string_to_delta("7d")
 
197
 
 
198
    >>> string_to_delta('7d')
87
199
    datetime.timedelta(7)
88
 
    >>> string_to_delta("60s")
 
200
    >>> string_to_delta('60s')
89
201
    datetime.timedelta(0, 60)
90
 
    >>> string_to_delta("60m")
 
202
    >>> string_to_delta('60m')
91
203
    datetime.timedelta(0, 3600)
92
 
    >>> string_to_delta("24h")
 
204
    >>> string_to_delta('24h')
93
205
    datetime.timedelta(1)
94
 
    >>> string_to_delta("1w")
 
206
    >>> string_to_delta('1w')
95
207
    datetime.timedelta(7)
96
 
    >>> string_to_delta("5m 30s")
 
208
    >>> string_to_delta('5m 30s')
97
209
    datetime.timedelta(0, 330)
98
210
    """
 
211
 
 
212
    try:
 
213
        return rfc3339_duration_to_delta(interval)
 
214
    except ValueError:
 
215
        pass
 
216
 
99
217
    value = datetime.timedelta(0)
100
 
    regexp = re.compile("(\d+)([dsmhw]?)")
101
 
    
 
218
    regexp = re.compile(r"(\d+)([dsmhw]?)")
 
219
 
102
220
    for num, suffix in regexp.findall(interval):
103
221
        if suffix == "d":
104
222
            value += datetime.timedelta(int(num))
114
232
            value += datetime.timedelta(0, 0, 0, int(num))
115
233
    return value
116
234
 
 
235
 
117
236
def print_clients(clients, keywords):
118
237
    def valuetostring(value, keyword):
119
238
        if type(value) is dbus.Boolean:
121
240
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
122
241
                       "ApprovalDuration", "ExtendedTimeout"):
123
242
            return milliseconds_to_string(value)
124
 
        return unicode(value)
125
 
    
 
243
        return str(value)
 
244
 
126
245
    # Create format string to print table rows
127
246
    format_string = " ".join("{{{key}:{width}}}".format(
128
 
            width = max(len(tablewords[key]),
129
 
                        max(len(valuetostring(client[key],
130
 
                                              key))
131
 
                            for client in
132
 
                            clients)),
133
 
            key = key) for key in keywords)
 
247
        width=max(len(tablewords[key]),
 
248
                  max(len(valuetostring(client[key], key))
 
249
                      for client in clients)),
 
250
        key=key)
 
251
                             for key in keywords)
134
252
    # Print header line
135
253
    print(format_string.format(**tablewords))
136
254
    for client in clients:
137
 
        print(format_string.format(**dict((key,
138
 
                                           valuetostring(client[key],
139
 
                                                         key))
140
 
                                          for key in keywords)))
 
255
        print(format_string
 
256
              .format(**{key: valuetostring(client[key], key)
 
257
                         for key in keywords}))
 
258
 
141
259
 
142
260
def has_actions(options):
143
261
    return any((options.enable,
159
277
                options.approve,
160
278
                options.deny))
161
279
 
 
280
 
162
281
def main():
163
282
    parser = argparse.ArgumentParser()
164
283
    parser.add_argument("--version", action="version",
165
 
                        version = "%(prog)s {0}".format(version),
 
284
                        version="%(prog)s {}".format(version),
166
285
                        help="show version number and exit")
167
286
    parser.add_argument("-a", "--all", action="store_true",
168
287
                        help="Select all clients")
169
288
    parser.add_argument("-v", "--verbose", action="store_true",
170
289
                        help="Print all fields")
 
290
    parser.add_argument("-j", "--dump-json", action="store_true",
 
291
                        help="Dump client data in JSON format")
171
292
    parser.add_argument("-e", "--enable", action="store_true",
172
293
                        help="Enable client")
173
294
    parser.add_argument("-d", "--disable", action="store_true",
201
322
    parser.add_argument("--approval-duration",
202
323
                        help="Set duration of one client approval")
203
324
    parser.add_argument("-H", "--host", help="Set host for client")
204
 
    parser.add_argument("-s", "--secret", type=file,
 
325
    parser.add_argument("-s", "--secret",
 
326
                        type=argparse.FileType(mode="rb"),
205
327
                        help="Set password blob (file) for client")
206
328
    parser.add_argument("-A", "--approve", action="store_true",
207
329
                        help="Approve any current client request")
208
330
    parser.add_argument("-D", "--deny", action="store_true",
209
331
                        help="Deny any current client request")
 
332
    parser.add_argument("--check", action="store_true",
 
333
                        help="Run self-test")
210
334
    parser.add_argument("client", nargs="*", help="Client name")
211
335
    options = parser.parse_args()
212
 
    
 
336
 
213
337
    if has_actions(options) and not (options.client or options.all):
214
338
        parser.error("Options require clients names or --all.")
215
339
    if options.verbose and has_actions(options):
216
 
        parser.error("--verbose can only be used alone or with"
217
 
                     " --all.")
 
340
        parser.error("--verbose can only be used alone.")
 
341
    if options.dump_json and (options.verbose
 
342
                              or has_actions(options)):
 
343
        parser.error("--dump-json can only be used alone.")
218
344
    if options.all and not has_actions(options):
219
345
        parser.error("--all requires an action.")
220
 
    
 
346
 
 
347
    if options.check:
 
348
        import doctest
 
349
        fail_count, test_count = doctest.testmod()
 
350
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
351
 
221
352
    try:
222
353
        bus = dbus.SystemBus()
223
354
        mandos_dbus_objc = bus.get_object(busname, server_path)
224
355
    except dbus.exceptions.DBusException:
225
 
        print("Could not connect to Mandos server",
226
 
              file=sys.stderr)
 
356
        print("Could not connect to Mandos server", file=sys.stderr)
227
357
        sys.exit(1)
228
 
    
 
358
 
229
359
    mandos_serv = dbus.Interface(mandos_dbus_objc,
230
 
                                 dbus_interface = server_interface)
231
 
    
232
 
    #block stderr since dbus library prints to stderr
 
360
                                 dbus_interface=server_interface)
 
361
    mandos_serv_object_manager = dbus.Interface(
 
362
        mandos_dbus_objc, dbus_interface=dbus.OBJECT_MANAGER_IFACE)
 
363
 
 
364
    # block stderr since dbus library prints to stderr
233
365
    null = os.open(os.path.devnull, os.O_RDWR)
234
366
    stderrcopy = os.dup(sys.stderr.fileno())
235
367
    os.dup2(null, sys.stderr.fileno())
236
368
    os.close(null)
237
369
    try:
238
370
        try:
239
 
            mandos_clients = mandos_serv.GetAllClientsWithProperties()
 
371
            mandos_clients = {path: ifs_and_props[client_interface]
 
372
                              for path, ifs_and_props in
 
373
                              mandos_serv_object_manager
 
374
                              .GetManagedObjects().items()
 
375
                              if client_interface in ifs_and_props}
240
376
        finally:
241
 
            #restore stderr
 
377
            # restore stderr
242
378
            os.dup2(stderrcopy, sys.stderr.fileno())
243
379
            os.close(stderrcopy)
244
 
    except dbus.exceptions.DBusException:
245
 
        print("Access denied: Accessing mandos server through dbus.",
 
380
    except dbus.exceptions.DBusException as e:
 
381
        print("Access denied: "
 
382
              "Accessing mandos server through D-Bus: {}".format(e),
246
383
              file=sys.stderr)
247
384
        sys.exit(1)
248
 
    
 
385
 
249
386
    # Compile dict of (clients: properties) to process
250
 
    clients={}
251
 
    
 
387
    clients = {}
 
388
 
252
389
    if options.all or not options.client:
253
 
        clients = dict((bus.get_object(busname, path), properties)
254
 
                       for path, properties in
255
 
                       mandos_clients.iteritems())
 
390
        clients = {bus.get_object(busname, path): properties
 
391
                   for path, properties in mandos_clients.items()}
256
392
    else:
257
393
        for name in options.client:
258
 
            for path, client in mandos_clients.iteritems():
 
394
            for path, client in mandos_clients.items():
259
395
                if client["Name"] == name:
260
396
                    client_objc = bus.get_object(busname, path)
261
397
                    clients[client_objc] = client
262
398
                    break
263
399
            else:
264
 
                print("Client not found on server: {0!r}"
 
400
                print("Client not found on server: {!r}"
265
401
                      .format(name), file=sys.stderr)
266
402
                sys.exit(1)
267
 
    
 
403
 
268
404
    if not has_actions(options) and clients:
269
 
        if options.verbose:
270
 
            keywords = ("Name", "Enabled", "Timeout",
271
 
                        "LastCheckedOK", "Created", "Interval",
272
 
                        "Host", "Fingerprint", "CheckerRunning",
273
 
                        "LastEnabled", "ApprovalPending",
274
 
                        "ApprovedByDefault",
 
405
        if options.verbose or options.dump_json:
 
406
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
 
407
                        "Created", "Interval", "Host", "Fingerprint",
 
408
                        "CheckerRunning", "LastEnabled",
 
409
                        "ApprovalPending", "ApprovedByDefault",
275
410
                        "LastApprovalRequest", "ApprovalDelay",
276
411
                        "ApprovalDuration", "Checker",
277
 
                        "ExtendedTimeout")
 
412
                        "ExtendedTimeout", "Expires",
 
413
                        "LastCheckerStatus")
278
414
        else:
279
415
            keywords = defaultkeywords
280
 
        
281
 
        print_clients(clients.values(), keywords)
 
416
 
 
417
        if options.dump_json:
 
418
            json.dump({client["Name"]: {key:
 
419
                                        bool(client[key])
 
420
                                        if isinstance(client[key],
 
421
                                                      dbus.Boolean)
 
422
                                        else client[key]
 
423
                                        for key in keywords}
 
424
                       for client in clients.values()},
 
425
                      fp=sys.stdout, indent=4,
 
426
                      separators=(',', ': '))
 
427
            print()
 
428
        else:
 
429
            print_clients(clients.values(), keywords)
282
430
    else:
283
431
        # Process each client in the list by all selected options
284
432
        for client in clients:
 
433
 
285
434
            def set_client_prop(prop, value):
286
435
                """Set a Client D-Bus property"""
287
436
                client.Set(client_interface, prop, value,
288
437
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
438
 
289
439
            def set_client_prop_ms(prop, value):
290
440
                """Set a Client D-Bus property, converted
291
441
                from a string to milliseconds."""
292
442
                set_client_prop(prop,
293
 
                                timedelta_to_milliseconds
294
 
                                (string_to_delta(value)))
 
443
                                string_to_delta(value).total_seconds()
 
444
                                * 1000)
 
445
 
295
446
            if options.remove:
296
447
                mandos_serv.RemoveClient(client.__dbus_object_path__)
297
448
            if options.enable:
305
456
            if options.stop_checker:
306
457
                set_client_prop("CheckerRunning", dbus.Boolean(False))
307
458
            if options.is_enabled:
308
 
                sys.exit(0 if client.Get(client_interface,
309
 
                                         "Enabled",
310
 
                                         dbus_interface=
311
 
                                         dbus.PROPERTIES_IFACE)
312
 
                         else 1)
 
459
                if client.Get(client_interface, "Enabled",
 
460
                              dbus_interface=dbus.PROPERTIES_IFACE):
 
461
                    sys.exit(0)
 
462
                else:
 
463
                    sys.exit(1)
313
464
            if options.checker is not None:
314
465
                set_client_prop("Checker", options.checker)
315
466
            if options.host is not None:
341
492
                client.Approve(dbus.Boolean(False),
342
493
                               dbus_interface=client_interface)
343
494
 
 
495
 
344
496
if __name__ == "__main__":
345
497
    main()