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  • Committer: Teddy Hogeborn
  • Date: 2017-08-20 13:54:01 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 360.
  • Revision ID: teddy@recompile.se-20170820135401-nbm84h6hhyy40dr2
Bug fix: Detect failure of ssh-keyscan in mandos-keygen --password.

* mandos-keygen: Detect failure of ssh-keyscan in --password mode.

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removed removed

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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 © 2008-2014 Teddy Hogeborn
7
 
# Copyright © 2008-2014 Björn Påhlsson
8
 
 
5
#
 
6
# Copyright © 2008-2017 Teddy Hogeborn
 
7
# Copyright © 2008-2017 Björn Påhlsson
 
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
11
11
# the Free Software Foundation, either version 3 of the License, or
15
15
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
16
16
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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
20
# along with this program.  If not, see
21
21
# <http://www.gnu.org/licenses/>.
22
 
 
22
#
23
23
# Contact the authors at <mandos@recompile.se>.
24
 
 
24
#
25
25
 
26
26
from __future__ import (division, absolute_import, print_function,
27
27
                        unicode_literals)
28
28
 
29
 
from future_builtins import *
 
29
try:
 
30
    from future_builtins import *
 
31
except ImportError:
 
32
    pass
30
33
 
31
34
import sys
32
35
import argparse
35
38
import re
36
39
import os
37
40
import collections
38
 
import doctest
 
41
import json
39
42
 
40
43
import dbus
41
44
 
 
45
if sys.version_info.major == 2:
 
46
    str = unicode
 
47
 
42
48
locale.setlocale(locale.LC_ALL, "")
43
49
 
44
50
tablewords = {
58
64
    "ApprovalDelay": "Approval Delay",
59
65
    "ApprovalDuration": "Approval Duration",
60
66
    "Checker": "Checker",
61
 
    "ExtendedTimeout" : "Extended Timeout"
62
 
    }
 
67
    "ExtendedTimeout": "Extended Timeout",
 
68
    "Expires": "Expires",
 
69
    "LastCheckerStatus": "Last Checker Status",
 
70
}
63
71
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
64
72
domain = "se.recompile"
65
73
busname = domain + ".Mandos"
66
74
server_path = "/"
67
75
server_interface = domain + ".Mandos"
68
76
client_interface = domain + ".Mandos.Client"
69
 
version = "1.6.6"
70
 
 
71
 
def timedelta_to_milliseconds(td):
72
 
    """Convert a datetime.timedelta object to milliseconds"""
73
 
    return ((td.days * 24 * 60 * 60 * 1000)
74
 
            + (td.seconds * 1000)
75
 
            + (td.microseconds // 1000))
 
77
version = "1.7.15"
 
78
 
 
79
 
 
80
try:
 
81
    dbus.OBJECT_MANAGER_IFACE
 
82
except AttributeError:
 
83
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
84
 
76
85
 
77
86
def milliseconds_to_string(ms):
78
87
    td = datetime.timedelta(0, 0, 0, ms)
79
88
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}"
80
 
            .format(days = "{0}T".format(td.days) if td.days else "",
81
 
                    hours = td.seconds // 3600,
82
 
                    minutes = (td.seconds % 3600) // 60,
83
 
                    seconds = td.seconds % 60,
84
 
                    ))
 
89
            .format(days="{}T".format(td.days) if td.days else "",
 
90
                    hours=td.seconds // 3600,
 
91
                    minutes=(td.seconds % 3600) // 60,
 
92
                    seconds=td.seconds % 60))
85
93
 
86
94
 
87
95
def rfc3339_duration_to_delta(duration):
88
96
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
89
 
    
 
97
 
90
98
    >>> rfc3339_duration_to_delta("P7D")
91
99
    datetime.timedelta(7)
92
100
    >>> rfc3339_duration_to_delta("PT60S")
102
110
    >>> rfc3339_duration_to_delta("P1DT3M20S")
103
111
    datetime.timedelta(1, 200)
104
112
    """
105
 
    
 
113
 
106
114
    # Parsing an RFC 3339 duration with regular expressions is not
107
115
    # possible - there would have to be multiple places for the same
108
116
    # values, like seconds.  The current code, while more esoteric, is
109
117
    # cleaner without depending on a parsing library.  If Python had a
110
118
    # built-in library for parsing we would use it, but we'd like to
111
119
    # avoid excessive use of external libraries.
112
 
    
 
120
 
113
121
    # New type for defining tokens, syntax, and semantics all-in-one
114
 
    Token = collections.namedtuple("Token",
115
 
                                   ("regexp", # To match token; if
116
 
                                              # "value" is not None,
117
 
                                              # must have a "group"
118
 
                                              # containing digits
119
 
                                    "value",  # datetime.timedelta or
120
 
                                              # None
121
 
                                    "followers")) # Tokens valid after
122
 
                                                  # this token
 
122
    Token = collections.namedtuple("Token", (
 
123
        "regexp",  # To match token; if "value" is not None, must have
 
124
                   # a "group" containing digits
 
125
        "value",   # datetime.timedelta or None
 
126
        "followers"))           # Tokens valid after this token
123
127
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
124
128
    # the "duration" ABNF definition in RFC 3339, Appendix A.
125
129
    token_end = Token(re.compile(r"$"), None, frozenset())
126
130
    token_second = Token(re.compile(r"(\d+)S"),
127
131
                         datetime.timedelta(seconds=1),
128
 
                         frozenset((token_end,)))
 
132
                         frozenset((token_end, )))
129
133
    token_minute = Token(re.compile(r"(\d+)M"),
130
134
                         datetime.timedelta(minutes=1),
131
135
                         frozenset((token_second, token_end)))
147
151
                       frozenset((token_month, token_end)))
148
152
    token_week = Token(re.compile(r"(\d+)W"),
149
153
                       datetime.timedelta(weeks=1),
150
 
                       frozenset((token_end,)))
 
154
                       frozenset((token_end, )))
151
155
    token_duration = Token(re.compile(r"P"), None,
152
156
                           frozenset((token_year, token_month,
153
157
                                      token_day, token_time,
154
 
                                      token_week))),
155
 
    # Define starting values
156
 
    value = datetime.timedelta() # Value so far
 
158
                                      token_week)))
 
159
    # Define starting values:
 
160
    # Value so far
 
161
    value = datetime.timedelta()
157
162
    found_token = None
158
 
    followers = frozenset(token_duration,) # Following valid tokens
159
 
    s = duration                # String left to parse
 
163
    # Following valid tokens
 
164
    followers = frozenset((token_duration, ))
 
165
    # String left to parse
 
166
    s = duration
160
167
    # Loop until end token is found
161
168
    while found_token is not token_end:
162
169
        # Search for any currently valid tokens
178
185
                break
179
186
        else:
180
187
            # No currently valid tokens were found
181
 
            raise ValueError("Invalid RFC 3339 duration")
 
188
            raise ValueError("Invalid RFC 3339 duration: {!r}"
 
189
                             .format(duration))
182
190
    # End token found
183
191
    return value
184
192
 
185
193
 
186
194
def string_to_delta(interval):
187
195
    """Parse a string and return a datetime.timedelta
188
 
    
189
 
    >>> string_to_delta("7d")
 
196
 
 
197
    >>> string_to_delta('7d')
190
198
    datetime.timedelta(7)
191
 
    >>> string_to_delta("60s")
 
199
    >>> string_to_delta('60s')
192
200
    datetime.timedelta(0, 60)
193
 
    >>> string_to_delta("60m")
 
201
    >>> string_to_delta('60m')
194
202
    datetime.timedelta(0, 3600)
195
 
    >>> string_to_delta("24h")
 
203
    >>> string_to_delta('24h')
196
204
    datetime.timedelta(1)
197
 
    >>> string_to_delta("1w")
 
205
    >>> string_to_delta('1w')
198
206
    datetime.timedelta(7)
199
 
    >>> string_to_delta("5m 30s")
 
207
    >>> string_to_delta('5m 30s')
200
208
    datetime.timedelta(0, 330)
201
209
    """
202
 
    
 
210
 
203
211
    try:
204
212
        return rfc3339_duration_to_delta(interval)
205
213
    except ValueError:
206
214
        pass
207
 
    
 
215
 
208
216
    value = datetime.timedelta(0)
209
217
    regexp = re.compile(r"(\d+)([dsmhw]?)")
210
 
    
 
218
 
211
219
    for num, suffix in regexp.findall(interval):
212
220
        if suffix == "d":
213
221
            value += datetime.timedelta(int(num))
223
231
            value += datetime.timedelta(0, 0, 0, int(num))
224
232
    return value
225
233
 
 
234
 
226
235
def print_clients(clients, keywords):
227
236
    def valuetostring(value, keyword):
228
237
        if type(value) is dbus.Boolean:
230
239
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
231
240
                       "ApprovalDuration", "ExtendedTimeout"):
232
241
            return milliseconds_to_string(value)
233
 
        return unicode(value)
234
 
    
 
242
        return str(value)
 
243
 
235
244
    # Create format string to print table rows
236
245
    format_string = " ".join("{{{key}:{width}}}".format(
237
 
            width = max(len(tablewords[key]),
238
 
                        max(len(valuetostring(client[key],
239
 
                                              key))
240
 
                            for client in
241
 
                            clients)),
242
 
            key = key) for key in keywords)
 
246
        width=max(len(tablewords[key]),
 
247
                  max(len(valuetostring(client[key], key))
 
248
                      for client in clients)),
 
249
        key=key)
 
250
                             for key in keywords)
243
251
    # Print header line
244
252
    print(format_string.format(**tablewords))
245
253
    for client in clients:
246
 
        print(format_string.format(**dict((key,
247
 
                                           valuetostring(client[key],
248
 
                                                         key))
249
 
                                          for key in keywords)))
 
254
        print(format_string
 
255
              .format(**{key: valuetostring(client[key], key)
 
256
                         for key in keywords}))
 
257
 
250
258
 
251
259
def has_actions(options):
252
260
    return any((options.enable,
268
276
                options.approve,
269
277
                options.deny))
270
278
 
 
279
 
271
280
def main():
272
281
    parser = argparse.ArgumentParser()
273
282
    parser.add_argument("--version", action="version",
274
 
                        version = "%(prog)s {0}".format(version),
 
283
                        version="%(prog)s {}".format(version),
275
284
                        help="show version number and exit")
276
285
    parser.add_argument("-a", "--all", action="store_true",
277
286
                        help="Select all clients")
278
287
    parser.add_argument("-v", "--verbose", action="store_true",
279
288
                        help="Print all fields")
 
289
    parser.add_argument("-j", "--dump-json", action="store_true",
 
290
                        help="Dump client data in JSON format")
280
291
    parser.add_argument("-e", "--enable", action="store_true",
281
292
                        help="Enable client")
282
293
    parser.add_argument("-d", "--disable", action="store_true",
310
321
    parser.add_argument("--approval-duration",
311
322
                        help="Set duration of one client approval")
312
323
    parser.add_argument("-H", "--host", help="Set host for client")
313
 
    parser.add_argument("-s", "--secret", type=file,
 
324
    parser.add_argument("-s", "--secret",
 
325
                        type=argparse.FileType(mode="rb"),
314
326
                        help="Set password blob (file) for client")
315
327
    parser.add_argument("-A", "--approve", action="store_true",
316
328
                        help="Approve any current client request")
320
332
                        help="Run self-test")
321
333
    parser.add_argument("client", nargs="*", help="Client name")
322
334
    options = parser.parse_args()
323
 
    
 
335
 
324
336
    if has_actions(options) and not (options.client or options.all):
325
337
        parser.error("Options require clients names or --all.")
326
338
    if options.verbose and has_actions(options):
327
 
        parser.error("--verbose can only be used alone or with"
328
 
                     " --all.")
 
339
        parser.error("--verbose can only be used alone.")
 
340
    if options.dump_json and (options.verbose
 
341
                              or has_actions(options)):
 
342
        parser.error("--dump-json can only be used alone.")
329
343
    if options.all and not has_actions(options):
330
344
        parser.error("--all requires an action.")
331
345
 
332
346
    if options.check:
 
347
        import doctest
333
348
        fail_count, test_count = doctest.testmod()
334
349
        sys.exit(os.EX_OK if fail_count == 0 else 1)
335
 
    
 
350
 
336
351
    try:
337
352
        bus = dbus.SystemBus()
338
353
        mandos_dbus_objc = bus.get_object(busname, server_path)
339
354
    except dbus.exceptions.DBusException:
340
 
        print("Could not connect to Mandos server",
341
 
              file=sys.stderr)
 
355
        print("Could not connect to Mandos server", file=sys.stderr)
342
356
        sys.exit(1)
343
 
    
 
357
 
344
358
    mandos_serv = dbus.Interface(mandos_dbus_objc,
345
 
                                 dbus_interface = server_interface)
346
 
    
347
 
    #block stderr since dbus library prints to stderr
 
359
                                 dbus_interface=server_interface)
 
360
    mandos_serv_object_manager = dbus.Interface(
 
361
        mandos_dbus_objc, dbus_interface=dbus.OBJECT_MANAGER_IFACE)
 
362
 
 
363
    # block stderr since dbus library prints to stderr
348
364
    null = os.open(os.path.devnull, os.O_RDWR)
349
365
    stderrcopy = os.dup(sys.stderr.fileno())
350
366
    os.dup2(null, sys.stderr.fileno())
351
367
    os.close(null)
352
368
    try:
353
369
        try:
354
 
            mandos_clients = mandos_serv.GetAllClientsWithProperties()
 
370
            mandos_clients = {path: ifs_and_props[client_interface]
 
371
                              for path, ifs_and_props in
 
372
                              mandos_serv_object_manager
 
373
                              .GetManagedObjects().items()
 
374
                              if client_interface in ifs_and_props}
355
375
        finally:
356
 
            #restore stderr
 
376
            # restore stderr
357
377
            os.dup2(stderrcopy, sys.stderr.fileno())
358
378
            os.close(stderrcopy)
359
 
    except dbus.exceptions.DBusException:
360
 
        print("Access denied: Accessing mandos server through dbus.",
 
379
    except dbus.exceptions.DBusException as e:
 
380
        print("Access denied: "
 
381
              "Accessing mandos server through D-Bus: {}".format(e),
361
382
              file=sys.stderr)
362
383
        sys.exit(1)
363
 
    
 
384
 
364
385
    # Compile dict of (clients: properties) to process
365
 
    clients={}
366
 
    
 
386
    clients = {}
 
387
 
367
388
    if options.all or not options.client:
368
 
        clients = dict((bus.get_object(busname, path), properties)
369
 
                       for path, properties in
370
 
                       mandos_clients.iteritems())
 
389
        clients = {bus.get_object(busname, path): properties
 
390
                   for path, properties in mandos_clients.items()}
371
391
    else:
372
392
        for name in options.client:
373
 
            for path, client in mandos_clients.iteritems():
 
393
            for path, client in mandos_clients.items():
374
394
                if client["Name"] == name:
375
395
                    client_objc = bus.get_object(busname, path)
376
396
                    clients[client_objc] = client
377
397
                    break
378
398
            else:
379
 
                print("Client not found on server: {0!r}"
 
399
                print("Client not found on server: {!r}"
380
400
                      .format(name), file=sys.stderr)
381
401
                sys.exit(1)
382
 
    
 
402
 
383
403
    if not has_actions(options) and clients:
384
 
        if options.verbose:
385
 
            keywords = ("Name", "Enabled", "Timeout",
386
 
                        "LastCheckedOK", "Created", "Interval",
387
 
                        "Host", "Fingerprint", "CheckerRunning",
388
 
                        "LastEnabled", "ApprovalPending",
389
 
                        "ApprovedByDefault",
 
404
        if options.verbose or options.dump_json:
 
405
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
 
406
                        "Created", "Interval", "Host", "Fingerprint",
 
407
                        "CheckerRunning", "LastEnabled",
 
408
                        "ApprovalPending", "ApprovedByDefault",
390
409
                        "LastApprovalRequest", "ApprovalDelay",
391
410
                        "ApprovalDuration", "Checker",
392
 
                        "ExtendedTimeout")
 
411
                        "ExtendedTimeout", "Expires",
 
412
                        "LastCheckerStatus")
393
413
        else:
394
414
            keywords = defaultkeywords
395
 
        
396
 
        print_clients(clients.values(), keywords)
 
415
 
 
416
        if options.dump_json:
 
417
            json.dump({client["Name"]: {key:
 
418
                                        bool(client[key])
 
419
                                        if isinstance(client[key],
 
420
                                                      dbus.Boolean)
 
421
                                        else client[key]
 
422
                                        for key in keywords}
 
423
                       for client in clients.values()},
 
424
                      fp=sys.stdout, indent=4,
 
425
                      separators=(',', ': '))
 
426
            print()
 
427
        else:
 
428
            print_clients(clients.values(), keywords)
397
429
    else:
398
430
        # Process each client in the list by all selected options
399
431
        for client in clients:
 
432
 
400
433
            def set_client_prop(prop, value):
401
434
                """Set a Client D-Bus property"""
402
435
                client.Set(client_interface, prop, value,
403
436
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
437
 
404
438
            def set_client_prop_ms(prop, value):
405
439
                """Set a Client D-Bus property, converted
406
440
                from a string to milliseconds."""
407
441
                set_client_prop(prop,
408
 
                                timedelta_to_milliseconds
409
 
                                (string_to_delta(value)))
 
442
                                string_to_delta(value).total_seconds()
 
443
                                * 1000)
 
444
 
410
445
            if options.remove:
411
446
                mandos_serv.RemoveClient(client.__dbus_object_path__)
412
447
            if options.enable:
420
455
            if options.stop_checker:
421
456
                set_client_prop("CheckerRunning", dbus.Boolean(False))
422
457
            if options.is_enabled:
423
 
                sys.exit(0 if client.Get(client_interface,
424
 
                                         "Enabled",
425
 
                                         dbus_interface=
426
 
                                         dbus.PROPERTIES_IFACE)
427
 
                         else 1)
 
458
                if client.Get(client_interface, "Enabled",
 
459
                              dbus_interface=dbus.PROPERTIES_IFACE):
 
460
                    sys.exit(0)
 
461
                else:
 
462
                    sys.exit(1)
428
463
            if options.checker is not None:
429
464
                set_client_prop("Checker", options.checker)
430
465
            if options.host is not None:
456
491
                client.Approve(dbus.Boolean(False),
457
492
                               dbus_interface=client_interface)
458
493
 
 
494
 
459
495
if __name__ == "__main__":
460
496
    main()