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  • Committer: Teddy Hogeborn
  • Date: 2015-05-23 20:18:34 UTC
  • mto: This revision was merged to the branch mainline in revision 756.
  • Revision ID: teddy@recompile.se-20150523201834-e89ex4ito93yni8x
mandos: Use multiprocessing module to run checkers.

For a long time, the Mandos server has occasionally logged the message
"ERROR: Child process vanished".  This was never a fatal error, but it
has been annoying and slightly worrying, since a definite cause was
not found.  One potential cause could be the "multiprocessing" and
"subprocess" modules conflicting w.r.t. SIGCHLD.  To avoid this,
change the running of checkers from using subprocess.Popen
asynchronously to instead first create a multiprocessing.Process()
(which is asynchronous) calling a function, and have that function
then call subprocess.call() (which is synchronous).  In this way, the
only thing using any asynchronous subprocesses is the multiprocessing
module.

This makes it necessary to change one small thing in the D-Bus API,
since the subprocesses.call() function does not expose the raw wait(2)
status value.

DBUS-API (CheckerCompleted): Change the second value provided by this
                             D-Bus signal from the raw wait(2) status
                             to the actual terminating signal number.
mandos (subprocess_call_pipe): New function to be called by
                               multiprocessing.Process (starting a
                               separate process).
(Client.last_checker signal): New attribute for signal which
                              terminated last checker.  Like
                              last_checker_status, only not accessible
                              via D-Bus.
(Client.checker_callback): Take new "connection" argument and use it
                           to get returncode; set last_checker_signal.
                           Return False so gobject does not call this
                           callback again.
(Client.start_checker): Start checker using a multiprocessing.Process
                        instead of a subprocess.Popen.
(ClientDBus.checker_callback): Take new "connection" argument.        Call
                               Client.checker_callback early to have
                               it set last_checker_status and
                               last_checker_signal; use those.  Change
                               second value provided to D-Bus signal
                               CheckerCompleted to use
                               last_checker_signal if checker was
                               terminated by signal.
mandos-monitor: Update to reflect DBus API change.
(MandosClientWidget.checker_completed): Take "signal" instead of
                                        "condition" argument.  Use it
                                        accordingly.  Remove dead code
                                        (os.WCOREDUMP case).

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mandos-ctl
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
 
4
 
from __future__ import division
 
3
# 
 
4
# Mandos Monitor - Control and monitor the Mandos server
 
5
# 
 
6
# Copyright © 2008-2015 Teddy Hogeborn
 
7
# Copyright © 2008-2015 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
 
5
34
import sys
6
 
import dbus
7
 
from optparse import OptionParser
 
35
import argparse
8
36
import locale
9
37
import datetime
10
38
import re
11
 
 
12
 
locale.setlocale(locale.LC_ALL, u'')
 
39
import os
 
40
import collections
 
41
import doctest
 
42
 
 
43
import dbus
 
44
 
 
45
if sys.version_info.major == 2:
 
46
    str = unicode
 
47
 
 
48
locale.setlocale(locale.LC_ALL, "")
13
49
 
14
50
tablewords = {
15
 
    'name': u'Name',
16
 
    'enabled': u'Enabled',
17
 
    'timeout': u'Timeout',
18
 
    'last_checked_ok': u'Last Successful Check',
19
 
    'created': u'Created',
20
 
    'interval': u'Interval',
21
 
    'host': u'Host',
22
 
    'fingerprint': u'Fingerprint',
23
 
    'checker_running': u'Check Is Running',
24
 
    'last_enabled': u'Last Enabled',
25
 
    'checker': u'Checker',
26
 
    }
27
 
defaultkeywords = ('name', 'enabled', 'timeout', 'last_checked_ok')
28
 
domain = 'se.bsnet.fukt'
29
 
busname = domain + '.Mandos'
30
 
server_path = '/'
31
 
server_interface = domain + '.Mandos'
32
 
client_interface = domain + '.Mandos.Client'
33
 
version = "1.0.14"
34
 
bus = dbus.SystemBus()
35
 
mandos_dbus_objc = bus.get_object(busname, server_path)
36
 
mandos_serv = dbus.Interface(mandos_dbus_objc,
37
 
                             dbus_interface = server_interface)
38
 
mandos_clients = mandos_serv.GetAllClientsWithProperties()
 
51
    "Name": "Name",
 
52
    "Enabled": "Enabled",
 
53
    "Timeout": "Timeout",
 
54
    "LastCheckedOK": "Last Successful Check",
 
55
    "LastApprovalRequest": "Last Approval Request",
 
56
    "Created": "Created",
 
57
    "Interval": "Interval",
 
58
    "Host": "Host",
 
59
    "Fingerprint": "Fingerprint",
 
60
    "CheckerRunning": "Check Is Running",
 
61
    "LastEnabled": "Last Enabled",
 
62
    "ApprovalPending": "Approval Is Pending",
 
63
    "ApprovedByDefault": "Approved By Default",
 
64
    "ApprovalDelay": "Approval Delay",
 
65
    "ApprovalDuration": "Approval Duration",
 
66
    "Checker": "Checker",
 
67
    "ExtendedTimeout": "Extended Timeout"
 
68
}
 
69
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
 
70
domain = "se.recompile"
 
71
busname = domain + ".Mandos"
 
72
server_path = "/"
 
73
server_interface = domain + ".Mandos"
 
74
client_interface = domain + ".Mandos.Client"
 
75
version = "1.6.9"
39
76
 
40
 
def timedelta_to_milliseconds(td):
41
 
    "Convert a datetime.timedelta object to milliseconds"
42
 
    return ((td.days * 24 * 60 * 60 * 1000)
43
 
            + (td.seconds * 1000)
44
 
            + (td.microseconds // 1000))
45
77
 
46
78
def milliseconds_to_string(ms):
47
79
    td = datetime.timedelta(0, 0, 0, ms)
48
 
    return (u"%(days)s%(hours)02d:%(minutes)02d:%(seconds)02d"
49
 
            % { "days": "%dT" % td.days if td.days else "",
50
 
                "hours": td.seconds // 3600,
51
 
                "minutes": (td.seconds % 3600) // 60,
52
 
                "seconds": td.seconds % 60,
53
 
                })
 
80
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}".format(
 
81
        days = "{}T".format(td.days) if td.days else "",
 
82
        hours = td.seconds // 3600,
 
83
        minutes = (td.seconds % 3600) // 60,
 
84
        seconds = td.seconds % 60))
 
85
 
 
86
 
 
87
def rfc3339_duration_to_delta(duration):
 
88
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
 
89
    
 
90
    >>> rfc3339_duration_to_delta("P7D")
 
91
    datetime.timedelta(7)
 
92
    >>> rfc3339_duration_to_delta("PT60S")
 
93
    datetime.timedelta(0, 60)
 
94
    >>> rfc3339_duration_to_delta("PT60M")
 
95
    datetime.timedelta(0, 3600)
 
96
    >>> rfc3339_duration_to_delta("PT24H")
 
97
    datetime.timedelta(1)
 
98
    >>> rfc3339_duration_to_delta("P1W")
 
99
    datetime.timedelta(7)
 
100
    >>> rfc3339_duration_to_delta("PT5M30S")
 
101
    datetime.timedelta(0, 330)
 
102
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
103
    datetime.timedelta(1, 200)
 
104
    """
 
105
    
 
106
    # Parsing an RFC 3339 duration with regular expressions is not
 
107
    # possible - there would have to be multiple places for the same
 
108
    # values, like seconds.  The current code, while more esoteric, is
 
109
    # cleaner without depending on a parsing library.  If Python had a
 
110
    # built-in library for parsing we would use it, but we'd like to
 
111
    # avoid excessive use of external libraries.
 
112
    
 
113
    # 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
 
123
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
 
124
    # the "duration" ABNF definition in RFC 3339, Appendix A.
 
125
    token_end = Token(re.compile(r"$"), None, frozenset())
 
126
    token_second = Token(re.compile(r"(\d+)S"),
 
127
                         datetime.timedelta(seconds=1),
 
128
                         frozenset((token_end, )))
 
129
    token_minute = Token(re.compile(r"(\d+)M"),
 
130
                         datetime.timedelta(minutes=1),
 
131
                         frozenset((token_second, token_end)))
 
132
    token_hour = Token(re.compile(r"(\d+)H"),
 
133
                       datetime.timedelta(hours=1),
 
134
                       frozenset((token_minute, token_end)))
 
135
    token_time = Token(re.compile(r"T"),
 
136
                       None,
 
137
                       frozenset((token_hour, token_minute,
 
138
                                  token_second)))
 
139
    token_day = Token(re.compile(r"(\d+)D"),
 
140
                      datetime.timedelta(days=1),
 
141
                      frozenset((token_time, token_end)))
 
142
    token_month = Token(re.compile(r"(\d+)M"),
 
143
                        datetime.timedelta(weeks=4),
 
144
                        frozenset((token_day, token_end)))
 
145
    token_year = Token(re.compile(r"(\d+)Y"),
 
146
                       datetime.timedelta(weeks=52),
 
147
                       frozenset((token_month, token_end)))
 
148
    token_week = Token(re.compile(r"(\d+)W"),
 
149
                       datetime.timedelta(weeks=1),
 
150
                       frozenset((token_end, )))
 
151
    token_duration = Token(re.compile(r"P"), None,
 
152
                           frozenset((token_year, token_month,
 
153
                                      token_day, token_time,
 
154
                                      token_week)))
 
155
    # Define starting values
 
156
    value = datetime.timedelta() # Value so far
 
157
    found_token = None
 
158
    followers = frozenset((token_duration, )) # Following valid tokens
 
159
    s = duration                # String left to parse
 
160
    # Loop until end token is found
 
161
    while found_token is not token_end:
 
162
        # Search for any currently valid tokens
 
163
        for token in followers:
 
164
            match = token.regexp.match(s)
 
165
            if match is not None:
 
166
                # Token found
 
167
                if token.value is not None:
 
168
                    # Value found, parse digits
 
169
                    factor = int(match.group(1), 10)
 
170
                    # Add to value so far
 
171
                    value += factor * token.value
 
172
                # Strip token from string
 
173
                s = token.regexp.sub("", s, 1)
 
174
                # Go to found token
 
175
                found_token = token
 
176
                # Set valid next tokens
 
177
                followers = found_token.followers
 
178
                break
 
179
        else:
 
180
            # No currently valid tokens were found
 
181
            raise ValueError("Invalid RFC 3339 duration")
 
182
    # End token found
 
183
    return value
54
184
 
55
185
 
56
186
def string_to_delta(interval):
57
187
    """Parse a string and return a datetime.timedelta
58
 
 
59
 
    >>> string_to_delta('7d')
 
188
    
 
189
    >>> string_to_delta("7d")
60
190
    datetime.timedelta(7)
61
 
    >>> string_to_delta('60s')
 
191
    >>> string_to_delta("60s")
62
192
    datetime.timedelta(0, 60)
63
 
    >>> string_to_delta('60m')
 
193
    >>> string_to_delta("60m")
64
194
    datetime.timedelta(0, 3600)
65
 
    >>> string_to_delta('24h')
 
195
    >>> string_to_delta("24h")
66
196
    datetime.timedelta(1)
67
 
    >>> string_to_delta(u'1w')
 
197
    >>> string_to_delta("1w")
68
198
    datetime.timedelta(7)
69
 
    >>> string_to_delta('5m 30s')
 
199
    >>> string_to_delta("5m 30s")
70
200
    datetime.timedelta(0, 330)
71
201
    """
72
 
    timevalue = datetime.timedelta(0)
73
 
    regexp = re.compile("\d+[dsmhw]")
74
 
    
75
 
    for s in regexp.findall(interval):
76
 
        try:
77
 
            suffix = unicode(s[-1])
78
 
            value = int(s[:-1])
79
 
            if suffix == u"d":
80
 
                delta = datetime.timedelta(value)
81
 
            elif suffix == u"s":
82
 
                delta = datetime.timedelta(0, value)
83
 
            elif suffix == u"m":
84
 
                delta = datetime.timedelta(0, 0, 0, 0, value)
85
 
            elif suffix == u"h":
86
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
87
 
            elif suffix == u"w":
88
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
89
 
            else:
90
 
                raise ValueError
91
 
        except (ValueError, IndexError):
92
 
            raise ValueError
93
 
        timevalue += delta
94
 
    return timevalue
95
 
 
96
 
def print_clients(clients):
 
202
    
 
203
    try:
 
204
        return rfc3339_duration_to_delta(interval)
 
205
    except ValueError:
 
206
        pass
 
207
    
 
208
    value = datetime.timedelta(0)
 
209
    regexp = re.compile(r"(\d+)([dsmhw]?)")
 
210
    
 
211
    for num, suffix in regexp.findall(interval):
 
212
        if suffix == "d":
 
213
            value += datetime.timedelta(int(num))
 
214
        elif suffix == "s":
 
215
            value += datetime.timedelta(0, int(num))
 
216
        elif suffix == "m":
 
217
            value += datetime.timedelta(0, 0, 0, 0, int(num))
 
218
        elif suffix == "h":
 
219
            value += datetime.timedelta(0, 0, 0, 0, 0, int(num))
 
220
        elif suffix == "w":
 
221
            value += datetime.timedelta(0, 0, 0, 0, 0, 0, int(num))
 
222
        elif suffix == "":
 
223
            value += datetime.timedelta(0, 0, 0, int(num))
 
224
    return value
 
225
 
 
226
 
 
227
def print_clients(clients, keywords):
97
228
    def valuetostring(value, keyword):
98
229
        if type(value) is dbus.Boolean:
99
 
            return u"Yes" if value else u"No"
100
 
        if keyword in (u"timeout", u"interval"):
 
230
            return "Yes" if value else "No"
 
231
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
 
232
                       "ApprovalDuration", "ExtendedTimeout"):
101
233
            return milliseconds_to_string(value)
102
 
        return unicode(value)
 
234
        return str(value)
103
235
    
104
236
    # Create format string to print table rows
105
 
    format_string = u' '.join(u'%%-%ds' %
106
 
                              max(len(tablewords[key]),
107
 
                                  max(len(valuetostring(client[key], key))
108
 
                                      for client in
109
 
                                      clients))
110
 
                              for key in keywords)
 
237
    format_string = " ".join("{{{key}:{width}}}".format(
 
238
        width = max(len(tablewords[key]),
 
239
                    max(len(valuetostring(client[key], key))
 
240
                        for client in clients)),
 
241
        key = key)
 
242
                             for key in keywords)
111
243
    # Print header line
112
 
    print format_string % tuple(tablewords[key] for key in keywords)
 
244
    print(format_string.format(**tablewords))
113
245
    for client in clients:
114
 
        print format_string % tuple(valuetostring(client[key], key)
115
 
                                    for key in keywords)
116
 
 
117
 
parser = OptionParser(version = "%%prog %s" % version)
118
 
parser.add_option("-a", "--all", action="store_true",
119
 
                  help="Print all fields")
120
 
parser.add_option("-e", "--enable", action="store_true",
121
 
                  help="Enable client")
122
 
parser.add_option("-d", "--disable", action="store_true",
123
 
                  help="disable client")
124
 
parser.add_option("-b", "--bump-timeout", action="store_true",
125
 
                  help="Bump timeout for client")
126
 
parser.add_option("--start-checker", action="store_true",
127
 
                  help="Start checker for client")
128
 
parser.add_option("--stop-checker", action="store_true",
129
 
                  help="Stop checker for client")
130
 
parser.add_option("-V", "--is-enabled", action="store_true",
131
 
                  help="Check if client is enabled")
132
 
parser.add_option("-r", "--remove", action="store_true",
133
 
                  help="Remove client")
134
 
parser.add_option("-c", "--checker", type="string",
135
 
                  help="Set checker command for client")
136
 
parser.add_option("-t", "--timeout", type="string",
137
 
                  help="Set timeout for client")
138
 
parser.add_option("-i", "--interval", type="string",
139
 
                  help="Set checker interval for client")
140
 
parser.add_option("-H", "--host", type="string",
141
 
                  help="Set host for client")
142
 
parser.add_option("-s", "--secret", type="string",
143
 
                  help="Set password blob (file) for client")
144
 
options, client_names = parser.parse_args()
145
 
 
146
 
# Compile list of clients to process
147
 
clients=[]
148
 
for name in client_names:
149
 
    for path, client in mandos_clients.iteritems():
150
 
        if client['name'] == name:
151
 
            client_objc = bus.get_object(busname, path)
152
 
            clients.append(client_objc)
153
 
            break
154
 
    else:
155
 
        print >> sys.stderr, "Client not found on server: %r" % name
156
 
        sys.exit(1)
157
 
 
158
 
if not clients and mandos_clients.values():
159
 
    keywords = defaultkeywords
160
 
    if options.all:
161
 
        keywords = ('name', 'enabled', 'timeout', 'last_checked_ok',
162
 
                    'created', 'interval', 'host', 'fingerprint',
163
 
                    'checker_running', 'last_enabled', 'checker')
164
 
    print_clients(mandos_clients.values())
165
 
 
166
 
# Process each client in the list by all selected options
167
 
for client in clients:
168
 
    if options.remove:
169
 
        mandos_serv.RemoveClient(client.__dbus_object_path__)
170
 
    if options.enable:
171
 
        client.Enable(dbus_interface=client_interface)
172
 
    if options.disable:
173
 
        client.Disable(dbus_interface=client_interface)
174
 
    if options.bump_timeout:
175
 
        client.CheckedOK(dbus_interface=client_interface)
176
 
    if options.start_checker:
177
 
        client.StartChecker(dbus_interface=client_interface)
178
 
    if options.stop_checker:
179
 
        client.StopChecker(dbus_interface=client_interface)
180
 
    if options.is_enabled:
181
 
        sys.exit(0 if client.Get(client_interface,
182
 
                                 u"enabled",
183
 
                                 dbus_interface=dbus.PROPERTIES_IFACE)
184
 
                 else 1)
185
 
    if options.checker:
186
 
        client.Set(client_interface, u"checker", options.checker,
187
 
                   dbus_interface=dbus.PROPERTIES_IFACE)
188
 
    if options.host:
189
 
        client.Set(client_interface, u"host", options.host,
190
 
                   dbus_interface=dbus.PROPERTIES_IFACE)
191
 
    if options.interval:
192
 
        client.Set(client_interface, u"interval",
193
 
                   timedelta_to_milliseconds
194
 
                   (string_to_delta(options.interval)),
195
 
                   dbus_interface=dbus.PROPERTIES_IFACE)
196
 
    if options.timeout:
197
 
        client.Set(client_interface, u"timeout",
198
 
                   timedelta_to_milliseconds(string_to_delta
199
 
                                             (options.timeout)),
200
 
                   dbus_interface=dbus.PROPERTIES_IFACE)
201
 
    if options.secret:
202
 
        client.Set(client_interface, u"secret",
203
 
                   dbus.ByteArray(open(options.secret, u'rb').read()),
204
 
                   dbus_interface=dbus.PROPERTIES_IFACE)
 
246
        print(format_string.format(**{
 
247
            key: valuetostring(client[key], key)
 
248
            for key in keywords }))
 
249
 
 
250
 
 
251
def has_actions(options):
 
252
    return any((options.enable,
 
253
                options.disable,
 
254
                options.bump_timeout,
 
255
                options.start_checker,
 
256
                options.stop_checker,
 
257
                options.is_enabled,
 
258
                options.remove,
 
259
                options.checker is not None,
 
260
                options.timeout is not None,
 
261
                options.extended_timeout is not None,
 
262
                options.interval is not None,
 
263
                options.approved_by_default is not None,
 
264
                options.approval_delay is not None,
 
265
                options.approval_duration is not None,
 
266
                options.host is not None,
 
267
                options.secret is not None,
 
268
                options.approve,
 
269
                options.deny))
 
270
 
 
271
 
 
272
def main():
 
273
    parser = argparse.ArgumentParser()
 
274
    parser.add_argument("--version", action="version",
 
275
                        version = "%(prog)s {}".format(version),
 
276
                        help="show version number and exit")
 
277
    parser.add_argument("-a", "--all", action="store_true",
 
278
                        help="Select all clients")
 
279
    parser.add_argument("-v", "--verbose", action="store_true",
 
280
                        help="Print all fields")
 
281
    parser.add_argument("-e", "--enable", action="store_true",
 
282
                        help="Enable client")
 
283
    parser.add_argument("-d", "--disable", action="store_true",
 
284
                        help="disable client")
 
285
    parser.add_argument("-b", "--bump-timeout", action="store_true",
 
286
                        help="Bump timeout for client")
 
287
    parser.add_argument("--start-checker", action="store_true",
 
288
                        help="Start checker for client")
 
289
    parser.add_argument("--stop-checker", action="store_true",
 
290
                        help="Stop checker for client")
 
291
    parser.add_argument("-V", "--is-enabled", action="store_true",
 
292
                        help="Check if client is enabled")
 
293
    parser.add_argument("-r", "--remove", action="store_true",
 
294
                        help="Remove client")
 
295
    parser.add_argument("-c", "--checker",
 
296
                        help="Set checker command for client")
 
297
    parser.add_argument("-t", "--timeout",
 
298
                        help="Set timeout for client")
 
299
    parser.add_argument("--extended-timeout",
 
300
                        help="Set extended timeout for client")
 
301
    parser.add_argument("-i", "--interval",
 
302
                        help="Set checker interval for client")
 
303
    parser.add_argument("--approve-by-default", action="store_true",
 
304
                        default=None, dest="approved_by_default",
 
305
                        help="Set client to be approved by default")
 
306
    parser.add_argument("--deny-by-default", action="store_false",
 
307
                        dest="approved_by_default",
 
308
                        help="Set client to be denied by default")
 
309
    parser.add_argument("--approval-delay",
 
310
                        help="Set delay before client approve/deny")
 
311
    parser.add_argument("--approval-duration",
 
312
                        help="Set duration of one client approval")
 
313
    parser.add_argument("-H", "--host", help="Set host for client")
 
314
    parser.add_argument("-s", "--secret",
 
315
                        type=argparse.FileType(mode="rb"),
 
316
                        help="Set password blob (file) for client")
 
317
    parser.add_argument("-A", "--approve", action="store_true",
 
318
                        help="Approve any current client request")
 
319
    parser.add_argument("-D", "--deny", action="store_true",
 
320
                        help="Deny any current client request")
 
321
    parser.add_argument("--check", action="store_true",
 
322
                        help="Run self-test")
 
323
    parser.add_argument("client", nargs="*", help="Client name")
 
324
    options = parser.parse_args()
 
325
    
 
326
    if has_actions(options) and not (options.client or options.all):
 
327
        parser.error("Options require clients names or --all.")
 
328
    if options.verbose and has_actions(options):
 
329
        parser.error("--verbose can only be used alone or with"
 
330
                     " --all.")
 
331
    if options.all and not has_actions(options):
 
332
        parser.error("--all requires an action.")
 
333
 
 
334
    if options.check:
 
335
        fail_count, test_count = doctest.testmod()
 
336
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
337
    
 
338
    try:
 
339
        bus = dbus.SystemBus()
 
340
        mandos_dbus_objc = bus.get_object(busname, server_path)
 
341
    except dbus.exceptions.DBusException:
 
342
        print("Could not connect to Mandos server", file=sys.stderr)
 
343
        sys.exit(1)
 
344
    
 
345
    mandos_serv = dbus.Interface(mandos_dbus_objc,
 
346
                                 dbus_interface = server_interface)
 
347
    
 
348
    #block stderr since dbus library prints to stderr
 
349
    null = os.open(os.path.devnull, os.O_RDWR)
 
350
    stderrcopy = os.dup(sys.stderr.fileno())
 
351
    os.dup2(null, sys.stderr.fileno())
 
352
    os.close(null)
 
353
    try:
 
354
        try:
 
355
            mandos_clients = mandos_serv.GetAllClientsWithProperties()
 
356
        finally:
 
357
            #restore stderr
 
358
            os.dup2(stderrcopy, sys.stderr.fileno())
 
359
            os.close(stderrcopy)
 
360
    except dbus.exceptions.DBusException:
 
361
        print("Access denied: Accessing mandos server through dbus.",
 
362
              file=sys.stderr)
 
363
        sys.exit(1)
 
364
    
 
365
    # Compile dict of (clients: properties) to process
 
366
    clients={}
 
367
    
 
368
    if options.all or not options.client:
 
369
        clients = { bus.get_object(busname, path): properties
 
370
                    for path, properties in mandos_clients.items() }
 
371
    else:
 
372
        for name in options.client:
 
373
            for path, client in mandos_clients.items():
 
374
                if client["Name"] == name:
 
375
                    client_objc = bus.get_object(busname, path)
 
376
                    clients[client_objc] = client
 
377
                    break
 
378
            else:
 
379
                print("Client not found on server: {!r}"
 
380
                      .format(name), file=sys.stderr)
 
381
                sys.exit(1)
 
382
    
 
383
    if not has_actions(options) and clients:
 
384
        if options.verbose:
 
385
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
 
386
                        "Created", "Interval", "Host", "Fingerprint",
 
387
                        "CheckerRunning", "LastEnabled",
 
388
                        "ApprovalPending", "ApprovedByDefault",
 
389
                        "LastApprovalRequest", "ApprovalDelay",
 
390
                        "ApprovalDuration", "Checker",
 
391
                        "ExtendedTimeout")
 
392
        else:
 
393
            keywords = defaultkeywords
 
394
        
 
395
        print_clients(clients.values(), keywords)
 
396
    else:
 
397
        # Process each client in the list by all selected options
 
398
        for client in clients:
 
399
            
 
400
            def set_client_prop(prop, value):
 
401
                """Set a Client D-Bus property"""
 
402
                client.Set(client_interface, prop, value,
 
403
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
404
            
 
405
            def set_client_prop_ms(prop, value):
 
406
                """Set a Client D-Bus property, converted
 
407
                from a string to milliseconds."""
 
408
                set_client_prop(prop,
 
409
                                string_to_delta(value).total_seconds()
 
410
                                * 1000)
 
411
            
 
412
            if options.remove:
 
413
                mandos_serv.RemoveClient(client.__dbus_object_path__)
 
414
            if options.enable:
 
415
                set_client_prop("Enabled", dbus.Boolean(True))
 
416
            if options.disable:
 
417
                set_client_prop("Enabled", dbus.Boolean(False))
 
418
            if options.bump_timeout:
 
419
                set_client_prop("LastCheckedOK", "")
 
420
            if options.start_checker:
 
421
                set_client_prop("CheckerRunning", dbus.Boolean(True))
 
422
            if options.stop_checker:
 
423
                set_client_prop("CheckerRunning", dbus.Boolean(False))
 
424
            if options.is_enabled:
 
425
                sys.exit(0 if client.Get(client_interface,
 
426
                                         "Enabled",
 
427
                                         dbus_interface=
 
428
                                         dbus.PROPERTIES_IFACE)
 
429
                         else 1)
 
430
            if options.checker is not None:
 
431
                set_client_prop("Checker", options.checker)
 
432
            if options.host is not None:
 
433
                set_client_prop("Host", options.host)
 
434
            if options.interval is not None:
 
435
                set_client_prop_ms("Interval", options.interval)
 
436
            if options.approval_delay is not None:
 
437
                set_client_prop_ms("ApprovalDelay",
 
438
                                   options.approval_delay)
 
439
            if options.approval_duration is not None:
 
440
                set_client_prop_ms("ApprovalDuration",
 
441
                                   options.approval_duration)
 
442
            if options.timeout is not None:
 
443
                set_client_prop_ms("Timeout", options.timeout)
 
444
            if options.extended_timeout is not None:
 
445
                set_client_prop_ms("ExtendedTimeout",
 
446
                                   options.extended_timeout)
 
447
            if options.secret is not None:
 
448
                set_client_prop("Secret",
 
449
                                dbus.ByteArray(options.secret.read()))
 
450
            if options.approved_by_default is not None:
 
451
                set_client_prop("ApprovedByDefault",
 
452
                                dbus.Boolean(options
 
453
                                             .approved_by_default))
 
454
            if options.approve:
 
455
                client.Approve(dbus.Boolean(True),
 
456
                               dbus_interface=client_interface)
 
457
            elif options.deny:
 
458
                client.Approve(dbus.Boolean(False),
 
459
                               dbus_interface=client_interface)
 
460
 
 
461
 
 
462
if __name__ == "__main__":
 
463
    main()