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  • Committer: Teddy Hogeborn
  • Date: 2019-02-28 18:54:11 UTC
  • Revision ID: teddy@recompile.se-20190228185411-71f49cg8plsvdkub
Add tests to mandos-ctl's milliseconds_to_string function

* mandos-ctl (Test_milliseconds_to_string): New.

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mandos-ctl
 
1
#!/usr/bin/python
 
2
# -*- mode: python; coding: utf-8; after-save-hook: (lambda () (let ((command (if (and (boundp 'tramp-file-name-structure) (string-match (car tramp-file-name-structure) (buffer-file-name))) (tramp-file-name-localname (tramp-dissect-file-name (buffer-file-name))) (buffer-file-name)))) (if (= (shell-command (format "%s --check" (shell-quote-argument command)) "*Test*") 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w)) (kill-buffer "*Test*")) (display-buffer "*Test*")))); -*-
 
3
#
 
4
# Mandos Monitor - Control and monitor the Mandos server
 
5
#
 
6
# Copyright © 2008-2019 Teddy Hogeborn
 
7
# Copyright © 2008-2019 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
 
13
# the Free Software Foundation, either version 3 of the License, or
 
14
# (at your option) any later version.
 
15
#
 
16
#     Mandos is distributed in the hope that it will be useful, but
 
17
#     WITHOUT ANY WARRANTY; without even the implied warranty of
 
18
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
19
#     GNU General Public License for more details.
 
20
#
 
21
# You should have received a copy of the GNU General Public License
 
22
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
23
#
 
24
# Contact the authors at <mandos@recompile.se>.
 
25
#
 
26
 
 
27
from __future__ import (division, absolute_import, print_function,
 
28
                        unicode_literals)
 
29
 
 
30
try:
 
31
    from future_builtins import *
 
32
except ImportError:
 
33
    pass
 
34
 
 
35
import sys
 
36
import argparse
 
37
import locale
 
38
import datetime
 
39
import re
 
40
import os
 
41
import collections
 
42
import json
 
43
import unittest
 
44
 
 
45
import dbus
 
46
 
 
47
if sys.version_info.major == 2:
 
48
    str = unicode
 
49
 
 
50
locale.setlocale(locale.LC_ALL, "")
 
51
 
 
52
tablewords = {
 
53
    "Name": "Name",
 
54
    "Enabled": "Enabled",
 
55
    "Timeout": "Timeout",
 
56
    "LastCheckedOK": "Last Successful Check",
 
57
    "LastApprovalRequest": "Last Approval Request",
 
58
    "Created": "Created",
 
59
    "Interval": "Interval",
 
60
    "Host": "Host",
 
61
    "Fingerprint": "Fingerprint",
 
62
    "KeyID": "Key ID",
 
63
    "CheckerRunning": "Check Is Running",
 
64
    "LastEnabled": "Last Enabled",
 
65
    "ApprovalPending": "Approval Is Pending",
 
66
    "ApprovedByDefault": "Approved By Default",
 
67
    "ApprovalDelay": "Approval Delay",
 
68
    "ApprovalDuration": "Approval Duration",
 
69
    "Checker": "Checker",
 
70
    "ExtendedTimeout": "Extended Timeout",
 
71
    "Expires": "Expires",
 
72
    "LastCheckerStatus": "Last Checker Status",
 
73
}
 
74
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
 
75
domain = "se.recompile"
 
76
busname = domain + ".Mandos"
 
77
server_path = "/"
 
78
server_interface = domain + ".Mandos"
 
79
client_interface = domain + ".Mandos.Client"
 
80
version = "1.8.3"
 
81
 
 
82
 
 
83
try:
 
84
    dbus.OBJECT_MANAGER_IFACE
 
85
except AttributeError:
 
86
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
87
 
 
88
 
 
89
def milliseconds_to_string(ms):
 
90
    td = datetime.timedelta(0, 0, 0, ms)
 
91
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}"
 
92
            .format(days="{}T".format(td.days) if td.days else "",
 
93
                    hours=td.seconds // 3600,
 
94
                    minutes=(td.seconds % 3600) // 60,
 
95
                    seconds=td.seconds % 60))
 
96
 
 
97
 
 
98
def rfc3339_duration_to_delta(duration):
 
99
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
 
100
 
 
101
    >>> rfc3339_duration_to_delta("P7D")
 
102
    datetime.timedelta(7)
 
103
    >>> rfc3339_duration_to_delta("PT60S")
 
104
    datetime.timedelta(0, 60)
 
105
    >>> rfc3339_duration_to_delta("PT60M")
 
106
    datetime.timedelta(0, 3600)
 
107
    >>> rfc3339_duration_to_delta("PT24H")
 
108
    datetime.timedelta(1)
 
109
    >>> rfc3339_duration_to_delta("P1W")
 
110
    datetime.timedelta(7)
 
111
    >>> rfc3339_duration_to_delta("PT5M30S")
 
112
    datetime.timedelta(0, 330)
 
113
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
114
    datetime.timedelta(1, 200)
 
115
    """
 
116
 
 
117
    # Parsing an RFC 3339 duration with regular expressions is not
 
118
    # possible - there would have to be multiple places for the same
 
119
    # values, like seconds.  The current code, while more esoteric, is
 
120
    # cleaner without depending on a parsing library.  If Python had a
 
121
    # built-in library for parsing we would use it, but we'd like to
 
122
    # avoid excessive use of external libraries.
 
123
 
 
124
    # New type for defining tokens, syntax, and semantics all-in-one
 
125
    Token = collections.namedtuple("Token", (
 
126
        "regexp",  # To match token; if "value" is not None, must have
 
127
                   # a "group" containing digits
 
128
        "value",   # datetime.timedelta or None
 
129
        "followers"))           # Tokens valid after this token
 
130
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
 
131
    # the "duration" ABNF definition in RFC 3339, Appendix A.
 
132
    token_end = Token(re.compile(r"$"), None, frozenset())
 
133
    token_second = Token(re.compile(r"(\d+)S"),
 
134
                         datetime.timedelta(seconds=1),
 
135
                         frozenset((token_end, )))
 
136
    token_minute = Token(re.compile(r"(\d+)M"),
 
137
                         datetime.timedelta(minutes=1),
 
138
                         frozenset((token_second, token_end)))
 
139
    token_hour = Token(re.compile(r"(\d+)H"),
 
140
                       datetime.timedelta(hours=1),
 
141
                       frozenset((token_minute, token_end)))
 
142
    token_time = Token(re.compile(r"T"),
 
143
                       None,
 
144
                       frozenset((token_hour, token_minute,
 
145
                                  token_second)))
 
146
    token_day = Token(re.compile(r"(\d+)D"),
 
147
                      datetime.timedelta(days=1),
 
148
                      frozenset((token_time, token_end)))
 
149
    token_month = Token(re.compile(r"(\d+)M"),
 
150
                        datetime.timedelta(weeks=4),
 
151
                        frozenset((token_day, token_end)))
 
152
    token_year = Token(re.compile(r"(\d+)Y"),
 
153
                       datetime.timedelta(weeks=52),
 
154
                       frozenset((token_month, token_end)))
 
155
    token_week = Token(re.compile(r"(\d+)W"),
 
156
                       datetime.timedelta(weeks=1),
 
157
                       frozenset((token_end, )))
 
158
    token_duration = Token(re.compile(r"P"), None,
 
159
                           frozenset((token_year, token_month,
 
160
                                      token_day, token_time,
 
161
                                      token_week)))
 
162
    # Define starting values:
 
163
    # Value so far
 
164
    value = datetime.timedelta()
 
165
    found_token = None
 
166
    # Following valid tokens
 
167
    followers = frozenset((token_duration, ))
 
168
    # String left to parse
 
169
    s = duration
 
170
    # Loop until end token is found
 
171
    while found_token is not token_end:
 
172
        # Search for any currently valid tokens
 
173
        for token in followers:
 
174
            match = token.regexp.match(s)
 
175
            if match is not None:
 
176
                # Token found
 
177
                if token.value is not None:
 
178
                    # Value found, parse digits
 
179
                    factor = int(match.group(1), 10)
 
180
                    # Add to value so far
 
181
                    value += factor * token.value
 
182
                # Strip token from string
 
183
                s = token.regexp.sub("", s, 1)
 
184
                # Go to found token
 
185
                found_token = token
 
186
                # Set valid next tokens
 
187
                followers = found_token.followers
 
188
                break
 
189
        else:
 
190
            # No currently valid tokens were found
 
191
            raise ValueError("Invalid RFC 3339 duration: {!r}"
 
192
                             .format(duration))
 
193
    # End token found
 
194
    return value
 
195
 
 
196
 
 
197
def string_to_delta(interval):
 
198
    """Parse a string and return a datetime.timedelta
 
199
 
 
200
    >>> string_to_delta('7d')
 
201
    datetime.timedelta(7)
 
202
    >>> string_to_delta('60s')
 
203
    datetime.timedelta(0, 60)
 
204
    >>> string_to_delta('60m')
 
205
    datetime.timedelta(0, 3600)
 
206
    >>> string_to_delta('24h')
 
207
    datetime.timedelta(1)
 
208
    >>> string_to_delta('1w')
 
209
    datetime.timedelta(7)
 
210
    >>> string_to_delta('5m 30s')
 
211
    datetime.timedelta(0, 330)
 
212
    """
 
213
 
 
214
    try:
 
215
        return rfc3339_duration_to_delta(interval)
 
216
    except ValueError:
 
217
        pass
 
218
 
 
219
    value = datetime.timedelta(0)
 
220
    regexp = re.compile(r"(\d+)([dsmhw]?)")
 
221
 
 
222
    for num, suffix in regexp.findall(interval):
 
223
        if suffix == "d":
 
224
            value += datetime.timedelta(int(num))
 
225
        elif suffix == "s":
 
226
            value += datetime.timedelta(0, int(num))
 
227
        elif suffix == "m":
 
228
            value += datetime.timedelta(0, 0, 0, 0, int(num))
 
229
        elif suffix == "h":
 
230
            value += datetime.timedelta(0, 0, 0, 0, 0, int(num))
 
231
        elif suffix == "w":
 
232
            value += datetime.timedelta(0, 0, 0, 0, 0, 0, int(num))
 
233
        elif suffix == "":
 
234
            value += datetime.timedelta(0, 0, 0, int(num))
 
235
    return value
 
236
 
 
237
 
 
238
def print_clients(clients, keywords):
 
239
    def valuetostring(value, keyword):
 
240
        if type(value) is dbus.Boolean:
 
241
            return "Yes" if value else "No"
 
242
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
 
243
                       "ApprovalDuration", "ExtendedTimeout"):
 
244
            return milliseconds_to_string(value)
 
245
        return str(value)
 
246
 
 
247
    # Create format string to print table rows
 
248
    format_string = " ".join("{{{key}:{width}}}".format(
 
249
        width=max(len(tablewords[key]),
 
250
                  max(len(valuetostring(client[key], key))
 
251
                      for client in clients)),
 
252
        key=key)
 
253
                             for key in keywords)
 
254
    # Print header line
 
255
    print(format_string.format(**tablewords))
 
256
    for client in clients:
 
257
        print(format_string
 
258
              .format(**{key: valuetostring(client[key], key)
 
259
                         for key in keywords}))
 
260
 
 
261
 
 
262
def has_actions(options):
 
263
    return any((options.enable,
 
264
                options.disable,
 
265
                options.bump_timeout,
 
266
                options.start_checker,
 
267
                options.stop_checker,
 
268
                options.is_enabled,
 
269
                options.remove,
 
270
                options.checker is not None,
 
271
                options.timeout is not None,
 
272
                options.extended_timeout is not None,
 
273
                options.interval is not None,
 
274
                options.approved_by_default is not None,
 
275
                options.approval_delay is not None,
 
276
                options.approval_duration is not None,
 
277
                options.host is not None,
 
278
                options.secret is not None,
 
279
                options.approve,
 
280
                options.deny))
 
281
 
 
282
 
 
283
def main():
 
284
    parser = argparse.ArgumentParser()
 
285
    parser.add_argument("--version", action="version",
 
286
                        version="%(prog)s {}".format(version),
 
287
                        help="show version number and exit")
 
288
    parser.add_argument("-a", "--all", action="store_true",
 
289
                        help="Select all clients")
 
290
    parser.add_argument("-v", "--verbose", action="store_true",
 
291
                        help="Print all fields")
 
292
    parser.add_argument("-j", "--dump-json", action="store_true",
 
293
                        help="Dump client data in JSON format")
 
294
    parser.add_argument("-e", "--enable", action="store_true",
 
295
                        help="Enable client")
 
296
    parser.add_argument("-d", "--disable", action="store_true",
 
297
                        help="disable client")
 
298
    parser.add_argument("-b", "--bump-timeout", action="store_true",
 
299
                        help="Bump timeout for client")
 
300
    parser.add_argument("--start-checker", action="store_true",
 
301
                        help="Start checker for client")
 
302
    parser.add_argument("--stop-checker", action="store_true",
 
303
                        help="Stop checker for client")
 
304
    parser.add_argument("-V", "--is-enabled", action="store_true",
 
305
                        help="Check if client is enabled")
 
306
    parser.add_argument("-r", "--remove", action="store_true",
 
307
                        help="Remove client")
 
308
    parser.add_argument("-c", "--checker",
 
309
                        help="Set checker command for client")
 
310
    parser.add_argument("-t", "--timeout",
 
311
                        help="Set timeout for client")
 
312
    parser.add_argument("--extended-timeout",
 
313
                        help="Set extended timeout for client")
 
314
    parser.add_argument("-i", "--interval",
 
315
                        help="Set checker interval for client")
 
316
    parser.add_argument("--approve-by-default", action="store_true",
 
317
                        default=None, dest="approved_by_default",
 
318
                        help="Set client to be approved by default")
 
319
    parser.add_argument("--deny-by-default", action="store_false",
 
320
                        dest="approved_by_default",
 
321
                        help="Set client to be denied by default")
 
322
    parser.add_argument("--approval-delay",
 
323
                        help="Set delay before client approve/deny")
 
324
    parser.add_argument("--approval-duration",
 
325
                        help="Set duration of one client approval")
 
326
    parser.add_argument("-H", "--host", help="Set host for client")
 
327
    parser.add_argument("-s", "--secret",
 
328
                        type=argparse.FileType(mode="rb"),
 
329
                        help="Set password blob (file) for client")
 
330
    parser.add_argument("-A", "--approve", action="store_true",
 
331
                        help="Approve any current client request")
 
332
    parser.add_argument("-D", "--deny", action="store_true",
 
333
                        help="Deny any current client request")
 
334
    parser.add_argument("--check", action="store_true",
 
335
                        help="Run self-test")
 
336
    parser.add_argument("client", nargs="*", help="Client name")
 
337
    options = parser.parse_args()
 
338
 
 
339
    if has_actions(options) and not (options.client or options.all):
 
340
        parser.error("Options require clients names or --all.")
 
341
    if options.verbose and has_actions(options):
 
342
        parser.error("--verbose can only be used alone.")
 
343
    if options.dump_json and (options.verbose
 
344
                              or has_actions(options)):
 
345
        parser.error("--dump-json can only be used alone.")
 
346
    if options.all and not has_actions(options):
 
347
        parser.error("--all requires an action.")
 
348
 
 
349
    try:
 
350
        bus = dbus.SystemBus()
 
351
        mandos_dbus_objc = bus.get_object(busname, server_path)
 
352
    except dbus.exceptions.DBusException:
 
353
        print("Could not connect to Mandos server", file=sys.stderr)
 
354
        sys.exit(1)
 
355
 
 
356
    mandos_serv = dbus.Interface(mandos_dbus_objc,
 
357
                                 dbus_interface=server_interface)
 
358
    mandos_serv_object_manager = dbus.Interface(
 
359
        mandos_dbus_objc, dbus_interface=dbus.OBJECT_MANAGER_IFACE)
 
360
 
 
361
    # block stderr since dbus library prints to stderr
 
362
    null = os.open(os.path.devnull, os.O_RDWR)
 
363
    stderrcopy = os.dup(sys.stderr.fileno())
 
364
    os.dup2(null, sys.stderr.fileno())
 
365
    os.close(null)
 
366
    try:
 
367
        try:
 
368
            mandos_clients = {path: ifs_and_props[client_interface]
 
369
                              for path, ifs_and_props in
 
370
                              mandos_serv_object_manager
 
371
                              .GetManagedObjects().items()
 
372
                              if client_interface in ifs_and_props}
 
373
        finally:
 
374
            # restore stderr
 
375
            os.dup2(stderrcopy, sys.stderr.fileno())
 
376
            os.close(stderrcopy)
 
377
    except dbus.exceptions.DBusException as e:
 
378
        print("Access denied: "
 
379
              "Accessing mandos server through D-Bus: {}".format(e),
 
380
              file=sys.stderr)
 
381
        sys.exit(1)
 
382
 
 
383
    # Compile dict of (clients: properties) to process
 
384
    clients = {}
 
385
 
 
386
    if options.all or not options.client:
 
387
        clients = {bus.get_object(busname, path): properties
 
388
                   for path, properties in mandos_clients.items()}
 
389
    else:
 
390
        for name in options.client:
 
391
            for path, client in mandos_clients.items():
 
392
                if client["Name"] == name:
 
393
                    client_objc = bus.get_object(busname, path)
 
394
                    clients[client_objc] = client
 
395
                    break
 
396
            else:
 
397
                print("Client not found on server: {!r}"
 
398
                      .format(name), file=sys.stderr)
 
399
                sys.exit(1)
 
400
 
 
401
    if not has_actions(options) and clients:
 
402
        if options.verbose or options.dump_json:
 
403
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
 
404
                        "Created", "Interval", "Host", "KeyID",
 
405
                        "Fingerprint", "CheckerRunning",
 
406
                        "LastEnabled", "ApprovalPending",
 
407
                        "ApprovedByDefault", "LastApprovalRequest",
 
408
                        "ApprovalDelay", "ApprovalDuration",
 
409
                        "Checker", "ExtendedTimeout", "Expires",
 
410
                        "LastCheckerStatus")
 
411
        else:
 
412
            keywords = defaultkeywords
 
413
 
 
414
        if options.dump_json:
 
415
            json.dump({client["Name"]: {key:
 
416
                                        bool(client[key])
 
417
                                        if isinstance(client[key],
 
418
                                                      dbus.Boolean)
 
419
                                        else client[key]
 
420
                                        for key in keywords}
 
421
                       for client in clients.values()},
 
422
                      fp=sys.stdout, indent=4,
 
423
                      separators=(',', ': '))
 
424
            print()
 
425
        else:
 
426
            print_clients(clients.values(), keywords)
 
427
    else:
 
428
        # Process each client in the list by all selected options
 
429
        for client in clients:
 
430
 
 
431
            def set_client_prop(prop, value):
 
432
                """Set a Client D-Bus property"""
 
433
                client.Set(client_interface, prop, value,
 
434
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
435
 
 
436
            def set_client_prop_ms(prop, value):
 
437
                """Set a Client D-Bus property, converted
 
438
                from a string to milliseconds."""
 
439
                set_client_prop(prop,
 
440
                                string_to_delta(value).total_seconds()
 
441
                                * 1000)
 
442
 
 
443
            if options.remove:
 
444
                mandos_serv.RemoveClient(client.__dbus_object_path__)
 
445
            if options.enable:
 
446
                set_client_prop("Enabled", dbus.Boolean(True))
 
447
            if options.disable:
 
448
                set_client_prop("Enabled", dbus.Boolean(False))
 
449
            if options.bump_timeout:
 
450
                set_client_prop("LastCheckedOK", "")
 
451
            if options.start_checker:
 
452
                set_client_prop("CheckerRunning", dbus.Boolean(True))
 
453
            if options.stop_checker:
 
454
                set_client_prop("CheckerRunning", dbus.Boolean(False))
 
455
            if options.is_enabled:
 
456
                if client.Get(client_interface, "Enabled",
 
457
                              dbus_interface=dbus.PROPERTIES_IFACE):
 
458
                    sys.exit(0)
 
459
                else:
 
460
                    sys.exit(1)
 
461
            if options.checker is not None:
 
462
                set_client_prop("Checker", options.checker)
 
463
            if options.host is not None:
 
464
                set_client_prop("Host", options.host)
 
465
            if options.interval is not None:
 
466
                set_client_prop_ms("Interval", options.interval)
 
467
            if options.approval_delay is not None:
 
468
                set_client_prop_ms("ApprovalDelay",
 
469
                                   options.approval_delay)
 
470
            if options.approval_duration is not None:
 
471
                set_client_prop_ms("ApprovalDuration",
 
472
                                   options.approval_duration)
 
473
            if options.timeout is not None:
 
474
                set_client_prop_ms("Timeout", options.timeout)
 
475
            if options.extended_timeout is not None:
 
476
                set_client_prop_ms("ExtendedTimeout",
 
477
                                   options.extended_timeout)
 
478
            if options.secret is not None:
 
479
                set_client_prop("Secret",
 
480
                                dbus.ByteArray(options.secret.read()))
 
481
            if options.approved_by_default is not None:
 
482
                set_client_prop("ApprovedByDefault",
 
483
                                dbus.Boolean(options
 
484
                                             .approved_by_default))
 
485
            if options.approve:
 
486
                client.Approve(dbus.Boolean(True),
 
487
                               dbus_interface=client_interface)
 
488
            elif options.deny:
 
489
                client.Approve(dbus.Boolean(False),
 
490
                               dbus_interface=client_interface)
 
491
 
 
492
 
 
493
class Test_milliseconds_to_string(unittest.TestCase):
 
494
    def test_all(self):
 
495
        self.assertEqual(milliseconds_to_string(93785000),
 
496
                         "1T02:03:05")
 
497
    def test_no_days(self):
 
498
        self.assertEqual(milliseconds_to_string(7385000), "02:03:05")
 
499
    def test_all_zero(self):
 
500
        self.assertEqual(milliseconds_to_string(0), "00:00:00")
 
501
    def test_no_fractional_seconds(self):
 
502
        self.assertEqual(milliseconds_to_string(400), "00:00:00")
 
503
        self.assertEqual(milliseconds_to_string(900), "00:00:00")
 
504
        self.assertEqual(milliseconds_to_string(1900), "00:00:01")
 
505
 
 
506
 
 
507
def should_only_run_tests():
 
508
    parser = argparse.ArgumentParser(add_help=False)
 
509
    parser.add_argument("--check", action='store_true')
 
510
    args, unknown_args = parser.parse_known_args()
 
511
    run_tests = args.check
 
512
    if run_tests:
 
513
        # Remove --check argument from sys.argv
 
514
        sys.argv[1:] = unknown_args
 
515
    return run_tests
 
516
 
 
517
# Add all tests from doctest strings
 
518
def load_tests(loader, tests, none):
 
519
    import doctest
 
520
    tests.addTests(doctest.DocTestSuite())
 
521
    return tests
 
522
 
 
523
if __name__ == "__main__":
 
524
    if should_only_run_tests():
 
525
        # Call using ./tdd-python-script --check [--verbose]
 
526
        unittest.main()
 
527
    else:
 
528
        main()