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  • Committer: Teddy Hogeborn
  • Date: 2011-07-13 02:24:39 UTC
  • mfrom: (24.1.174 mandos)
  • Revision ID: teddy@fukt.bsnet.se-20110713022439-wbv6kghshdsc2x24
Merge from Björn.

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mandos-ctl
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# 
24
24
 
25
 
from __future__ import division
 
25
from __future__ import (division, absolute_import, print_function,
 
26
                        unicode_literals)
 
27
 
26
28
import sys
27
29
import dbus
28
 
from optparse import OptionParser
 
30
import argparse
29
31
import locale
30
32
import datetime
31
33
import re
32
34
import os
33
35
 
34
 
locale.setlocale(locale.LC_ALL, u'')
 
36
locale.setlocale(locale.LC_ALL, "")
35
37
 
36
38
tablewords = {
37
 
    'Name': u'Name',
38
 
    'Enabled': u'Enabled',
39
 
    'Timeout': u'Timeout',
40
 
    'LastCheckedOK': u'Last Successful Check',
41
 
    'LastApprovalRequest': u'Last Approval Request',
42
 
    'Created': u'Created',
43
 
    'Interval': u'Interval',
44
 
    'Host': u'Host',
45
 
    'Fingerprint': u'Fingerprint',
46
 
    'CheckerRunning': u'Check Is Running',
47
 
    'LastEnabled': u'Last Enabled',
48
 
    'ApprovalPending': u'Approval Is Pending',
49
 
    'ApprovedByDefault': u'Approved By Default',
50
 
    'ApprovalDelay': u"Approval Delay",
51
 
    'ApprovalDuration': u"Approval Duration",
52
 
    'Checker': u'Checker',
 
39
    "Name": "Name",
 
40
    "Enabled": "Enabled",
 
41
    "Timeout": "Timeout",
 
42
    "LastCheckedOK": "Last Successful Check",
 
43
    "LastApprovalRequest": "Last Approval Request",
 
44
    "Created": "Created",
 
45
    "Interval": "Interval",
 
46
    "Host": "Host",
 
47
    "Fingerprint": "Fingerprint",
 
48
    "CheckerRunning": "Check Is Running",
 
49
    "LastEnabled": "Last Enabled",
 
50
    "ApprovalPending": "Approval Is Pending",
 
51
    "ApprovedByDefault": "Approved By Default",
 
52
    "ApprovalDelay": "Approval Delay",
 
53
    "ApprovalDuration": "Approval Duration",
 
54
    "Checker": "Checker",
53
55
    }
54
 
defaultkeywords = ('Name', 'Enabled', 'Timeout', 'LastCheckedOK')
55
 
domain = 'se.bsnet.fukt'
56
 
busname = domain + '.Mandos'
57
 
server_path = '/'
58
 
server_interface = domain + '.Mandos'
59
 
client_interface = domain + '.Mandos.Client'
60
 
version = "1.2"
 
56
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
 
57
domain = "se.bsnet.fukt"
 
58
busname = domain + ".Mandos"
 
59
server_path = "/"
 
60
server_interface = domain + ".Mandos"
 
61
client_interface = domain + ".Mandos.Client"
 
62
version = "1.3.0"
61
63
 
62
64
def timedelta_to_milliseconds(td):
63
 
    "Convert a datetime.timedelta object to milliseconds"
 
65
    """Convert a datetime.timedelta object to milliseconds"""
64
66
    return ((td.days * 24 * 60 * 60 * 1000)
65
67
            + (td.seconds * 1000)
66
68
            + (td.microseconds // 1000))
67
69
 
68
70
def milliseconds_to_string(ms):
69
71
    td = datetime.timedelta(0, 0, 0, ms)
70
 
    return (u"%(days)s%(hours)02d:%(minutes)02d:%(seconds)02d"
 
72
    return ("%(days)s%(hours)02d:%(minutes)02d:%(seconds)02d"
71
73
            % { "days": "%dT" % td.days if td.days else "",
72
74
                "hours": td.seconds // 3600,
73
75
                "minutes": (td.seconds % 3600) // 60,
74
76
                "seconds": td.seconds % 60,
75
77
                })
76
78
 
77
 
 
78
79
def string_to_delta(interval):
79
80
    """Parse a string and return a datetime.timedelta
80
 
 
81
 
    >>> string_to_delta('7d')
 
81
    
 
82
    >>> string_to_delta("7d")
82
83
    datetime.timedelta(7)
83
 
    >>> string_to_delta('60s')
 
84
    >>> string_to_delta("60s")
84
85
    datetime.timedelta(0, 60)
85
 
    >>> string_to_delta('60m')
 
86
    >>> string_to_delta("60m")
86
87
    datetime.timedelta(0, 3600)
87
 
    >>> string_to_delta('24h')
 
88
    >>> string_to_delta("24h")
88
89
    datetime.timedelta(1)
89
 
    >>> string_to_delta(u'1w')
 
90
    >>> string_to_delta("1w")
90
91
    datetime.timedelta(7)
91
 
    >>> string_to_delta('5m 30s')
 
92
    >>> string_to_delta("5m 30s")
92
93
    datetime.timedelta(0, 330)
93
94
    """
94
95
    timevalue = datetime.timedelta(0)
98
99
        try:
99
100
            suffix = unicode(s[-1])
100
101
            value = int(s[:-1])
101
 
            if suffix == u"d":
 
102
            if suffix == "d":
102
103
                delta = datetime.timedelta(value)
103
 
            elif suffix == u"s":
 
104
            elif suffix == "s":
104
105
                delta = datetime.timedelta(0, value)
105
 
            elif suffix == u"m":
 
106
            elif suffix == "m":
106
107
                delta = datetime.timedelta(0, 0, 0, 0, value)
107
 
            elif suffix == u"h":
 
108
            elif suffix == "h":
108
109
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
109
 
            elif suffix == u"w":
 
110
            elif suffix == "w":
110
111
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
111
112
            else:
112
113
                raise ValueError
118
119
def print_clients(clients, keywords):
119
120
    def valuetostring(value, keyword):
120
121
        if type(value) is dbus.Boolean:
121
 
            return u"Yes" if value else u"No"
122
 
        if keyword in (u"Timeout", u"Interval", u"ApprovalDelay",
123
 
                       u"ApprovalDuration"):
 
122
            return "Yes" if value else "No"
 
123
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
 
124
                       "ApprovalDuration"):
124
125
            return milliseconds_to_string(value)
125
126
        return unicode(value)
126
127
    
127
128
    # Create format string to print table rows
128
 
    format_string = u' '.join(u'%%-%ds' %
129
 
                              max(len(tablewords[key]),
130
 
                                  max(len(valuetostring(client[key],
131
 
                                                        key))
132
 
                                      for client in
133
 
                                      clients))
134
 
                              for key in keywords)
 
129
    format_string = " ".join("%%-%ds" %
 
130
                             max(len(tablewords[key]),
 
131
                                 max(len(valuetostring(client[key],
 
132
                                                       key))
 
133
                                     for client in
 
134
                                     clients))
 
135
                             for key in keywords)
135
136
    # Print header line
136
 
    print format_string % tuple(tablewords[key] for key in keywords)
 
137
    print(format_string % tuple(tablewords[key] for key in keywords))
137
138
    for client in clients:
138
 
        print format_string % tuple(valuetostring(client[key], key)
139
 
                                    for key in keywords)
 
139
        print(format_string % tuple(valuetostring(client[key], key)
 
140
                                    for key in keywords))
140
141
 
141
142
def has_actions(options):
142
143
    return any((options.enable,
156
157
                options.secret is not None,
157
158
                options.approve,
158
159
                options.deny))
159
 
        
 
160
 
160
161
def main():
161
 
        parser = OptionParser(version = "%%prog %s" % version)
162
 
        parser.add_option("-a", "--all", action="store_true",
163
 
                          help="Select all clients")
164
 
        parser.add_option("-v", "--verbose", action="store_true",
165
 
                          help="Print all fields")
166
 
        parser.add_option("-e", "--enable", action="store_true",
167
 
                          help="Enable client")
168
 
        parser.add_option("-d", "--disable", action="store_true",
169
 
                          help="disable client")
170
 
        parser.add_option("-b", "--bump-timeout", action="store_true",
171
 
                          help="Bump timeout for client")
172
 
        parser.add_option("--start-checker", action="store_true",
173
 
                          help="Start checker for client")
174
 
        parser.add_option("--stop-checker", action="store_true",
175
 
                          help="Stop checker for client")
176
 
        parser.add_option("-V", "--is-enabled", action="store_true",
177
 
                          help="Check if client is enabled")
178
 
        parser.add_option("-r", "--remove", action="store_true",
179
 
                          help="Remove client")
180
 
        parser.add_option("-c", "--checker", type="string",
181
 
                          help="Set checker command for client")
182
 
        parser.add_option("-t", "--timeout", type="string",
183
 
                          help="Set timeout for client")
184
 
        parser.add_option("-i", "--interval", type="string",
185
 
                          help="Set checker interval for client")
186
 
        parser.add_option("--approve-by-default", action="store_true",
187
 
                          dest=u"approved_by_default",
188
 
                          help="Set client to be approved by default")
189
 
        parser.add_option("--deny-by-default", action="store_false",
190
 
                          dest=u"approved_by_default",
191
 
                          help="Set client to be denied by default")
192
 
        parser.add_option("--approval-delay", type="string",
193
 
                          help="Set delay before client approve/deny")
194
 
        parser.add_option("--approval-duration", type="string",
195
 
                          help="Set duration of one client approval")
196
 
        parser.add_option("-H", "--host", type="string",
197
 
                          help="Set host for client")
198
 
        parser.add_option("-s", "--secret", type="string",
199
 
                          help="Set password blob (file) for client")
200
 
        parser.add_option("-A", "--approve", action="store_true",
201
 
                          help="Approve any current client request")
202
 
        parser.add_option("-D", "--deny", action="store_true",
203
 
                          help="Deny any current client request")
204
 
        options, client_names = parser.parse_args()
205
 
        
206
 
        if has_actions(options) and not client_names and not options.all:
207
 
            parser.error('Options require clients names or --all.')
208
 
        if options.verbose and has_actions(options):
209
 
            parser.error('--verbose can only be used alone or with'
210
 
                         ' --all.')
211
 
        if options.all and not has_actions(options):
212
 
            parser.error('--all requires an action.')
213
 
        
214
 
        try:
215
 
            bus = dbus.SystemBus()
216
 
            mandos_dbus_objc = bus.get_object(busname, server_path)
217
 
        except dbus.exceptions.DBusException:
218
 
            print >> sys.stderr, "Could not connect to Mandos server"
219
 
            sys.exit(1)
220
 
    
221
 
        mandos_serv = dbus.Interface(mandos_dbus_objc,
222
 
                                     dbus_interface = server_interface)
223
 
 
224
 
        #block stderr since dbus library prints to stderr
225
 
        null = os.open(os.path.devnull, os.O_RDWR)
226
 
        stderrcopy = os.dup(sys.stderr.fileno())
227
 
        os.dup2(null, sys.stderr.fileno())
228
 
        os.close(null)
229
 
        try:
230
 
            try:
231
 
                mandos_clients = mandos_serv.GetAllClientsWithProperties()
232
 
            finally:
233
 
                #restore stderr
234
 
                os.dup2(stderrcopy, sys.stderr.fileno())
235
 
                os.close(stderrcopy)
236
 
        except dbus.exceptions.DBusException, e:
237
 
            print >> sys.stderr, "Access denied: Accessing mandos server through dbus."
238
 
            sys.exit(1)
239
 
            
240
 
        # Compile dict of (clients: properties) to process
241
 
        clients={}
242
 
        
243
 
        if options.all or not client_names:
244
 
            clients = dict((bus.get_object(busname, path), properties)
245
 
                           for path, properties in
246
 
                           mandos_clients.iteritems())
247
 
        else:
248
 
            for name in client_names:
249
 
                for path, client in mandos_clients.iteritems():
250
 
                    if client['Name'] == name:
251
 
                        client_objc = bus.get_object(busname, path)
252
 
                        clients[client_objc] = client
253
 
                        break
254
 
                else:
255
 
                    print >> sys.stderr, "Client not found on server: %r" % name
256
 
                    sys.exit(1)
257
 
            
258
 
        if not has_actions(options) and clients:
259
 
            if options.verbose:
260
 
                keywords = ('Name', 'Enabled', 'Timeout',
261
 
                            'LastCheckedOK', 'Created', 'Interval',
262
 
                            'Host', 'Fingerprint', 'CheckerRunning',
263
 
                            'LastEnabled', 'ApprovalPending',
264
 
                            'ApprovedByDefault',
265
 
                            'LastApprovalRequest', 'ApprovalDelay',
266
 
                            'ApprovalDuration', 'Checker')
 
162
    parser = argparse.ArgumentParser()
 
163
    parser.add_argument("--version", action="version",
 
164
                        version = "%%prog %s" % version,
 
165
                        help="show version number and exit")
 
166
    parser.add_argument("-a", "--all", action="store_true",
 
167
                        help="Select all clients")
 
168
    parser.add_argument("-v", "--verbose", action="store_true",
 
169
                        help="Print all fields")
 
170
    parser.add_argument("-e", "--enable", action="store_true",
 
171
                        help="Enable client")
 
172
    parser.add_argument("-d", "--disable", action="store_true",
 
173
                        help="disable client")
 
174
    parser.add_argument("-b", "--bump-timeout", action="store_true",
 
175
                        help="Bump timeout for client")
 
176
    parser.add_argument("--start-checker", action="store_true",
 
177
                        help="Start checker for client")
 
178
    parser.add_argument("--stop-checker", action="store_true",
 
179
                        help="Stop checker for client")
 
180
    parser.add_argument("-V", "--is-enabled", action="store_true",
 
181
                        help="Check if client is enabled")
 
182
    parser.add_argument("-r", "--remove", action="store_true",
 
183
                        help="Remove client")
 
184
    parser.add_argument("-c", "--checker",
 
185
                        help="Set checker command for client")
 
186
    parser.add_argument("-t", "--timeout",
 
187
                        help="Set timeout for client")
 
188
    parser.add_argument("-i", "--interval",
 
189
                        help="Set checker interval for client")
 
190
    parser.add_argument("--approve-by-default", action="store_true",
 
191
                        default=None, dest="approved_by_default",
 
192
                        help="Set client to be approved by default")
 
193
    parser.add_argument("--deny-by-default", action="store_false",
 
194
                        dest="approved_by_default",
 
195
                        help="Set client to be denied by default")
 
196
    parser.add_argument("--approval-delay",
 
197
                        help="Set delay before client approve/deny")
 
198
    parser.add_argument("--approval-duration",
 
199
                        help="Set duration of one client approval")
 
200
    parser.add_argument("-H", "--host", help="Set host for client")
 
201
    parser.add_argument("-s", "--secret", type=file,
 
202
                        help="Set password blob (file) for client")
 
203
    parser.add_argument("-A", "--approve", action="store_true",
 
204
                        help="Approve any current client request")
 
205
    parser.add_argument("-D", "--deny", action="store_true",
 
206
                        help="Deny any current client request")
 
207
    parser.add_argument("client", nargs="*", help="Client name")
 
208
    options = parser.parse_args()
 
209
    
 
210
    if has_actions(options) and not options.client and not options.all:
 
211
        parser.error("Options require clients names or --all.")
 
212
    if options.verbose and has_actions(options):
 
213
        parser.error("--verbose can only be used alone or with"
 
214
                     " --all.")
 
215
    if options.all and not has_actions(options):
 
216
        parser.error("--all requires an action.")
 
217
    
 
218
    try:
 
219
        bus = dbus.SystemBus()
 
220
        mandos_dbus_objc = bus.get_object(busname, server_path)
 
221
    except dbus.exceptions.DBusException:
 
222
        print("Could not connect to Mandos server",
 
223
              file=sys.stderr)
 
224
        sys.exit(1)
 
225
    
 
226
    mandos_serv = dbus.Interface(mandos_dbus_objc,
 
227
                                 dbus_interface = server_interface)
 
228
    
 
229
    #block stderr since dbus library prints to stderr
 
230
    null = os.open(os.path.devnull, os.O_RDWR)
 
231
    stderrcopy = os.dup(sys.stderr.fileno())
 
232
    os.dup2(null, sys.stderr.fileno())
 
233
    os.close(null)
 
234
    try:
 
235
        try:
 
236
            mandos_clients = mandos_serv.GetAllClientsWithProperties()
 
237
        finally:
 
238
            #restore stderr
 
239
            os.dup2(stderrcopy, sys.stderr.fileno())
 
240
            os.close(stderrcopy)
 
241
    except dbus.exceptions.DBusException, e:
 
242
        print("Access denied: Accessing mandos server through dbus.",
 
243
              file=sys.stderr)
 
244
        sys.exit(1)
 
245
    
 
246
    # Compile dict of (clients: properties) to process
 
247
    clients={}
 
248
    
 
249
    if options.all or not options.client:
 
250
        clients = dict((bus.get_object(busname, path), properties)
 
251
                       for path, properties in
 
252
                       mandos_clients.iteritems())
 
253
    else:
 
254
        for name in options.client:
 
255
            for path, client in mandos_clients.iteritems():
 
256
                if client["Name"] == name:
 
257
                    client_objc = bus.get_object(busname, path)
 
258
                    clients[client_objc] = client
 
259
                    break
267
260
            else:
268
 
                keywords = defaultkeywords
269
 
            
270
 
            print_clients(clients.values(), keywords)
 
261
                print("Client not found on server: %r" % name,
 
262
                      file=sys.stderr)
 
263
                sys.exit(1)
 
264
    
 
265
    if not has_actions(options) and clients:
 
266
        if options.verbose:
 
267
            keywords = ("Name", "Enabled", "Timeout",
 
268
                        "LastCheckedOK", "Created", "Interval",
 
269
                        "Host", "Fingerprint", "CheckerRunning",
 
270
                        "LastEnabled", "ApprovalPending",
 
271
                        "ApprovedByDefault",
 
272
                        "LastApprovalRequest", "ApprovalDelay",
 
273
                        "ApprovalDuration", "Checker")
271
274
        else:
272
 
            # Process each client in the list by all selected options
273
 
            for client in clients:
274
 
                if options.remove:
275
 
                    mandos_serv.RemoveClient(client.__dbus_object_path__)
276
 
                if options.enable:
277
 
                    client.Enable(dbus_interface=client_interface)
278
 
                if options.disable:
279
 
                    client.Disable(dbus_interface=client_interface)
280
 
                if options.bump_timeout:
281
 
                    client.CheckedOK(dbus_interface=client_interface)
282
 
                if options.start_checker:
283
 
                    client.StartChecker(dbus_interface=client_interface)
284
 
                if options.stop_checker:
285
 
                    client.StopChecker(dbus_interface=client_interface)
286
 
                if options.is_enabled:
287
 
                    sys.exit(0 if client.Get(client_interface,
288
 
                                             u"Enabled",
289
 
                                             dbus_interface=dbus.PROPERTIES_IFACE)
290
 
                             else 1)
291
 
                if options.checker:
292
 
                    client.Set(client_interface, u"Checker", options.checker,
293
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
294
 
                if options.host:
295
 
                    client.Set(client_interface, u"Host", options.host,
296
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
297
 
                if options.interval:
298
 
                    client.Set(client_interface, u"Interval",
299
 
                               timedelta_to_milliseconds
300
 
                               (string_to_delta(options.interval)),
301
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
302
 
                if options.approval_delay:
303
 
                    client.Set(client_interface, u"ApprovalDelay",
304
 
                               timedelta_to_milliseconds
305
 
                               (string_to_delta(options.
306
 
                                                approval_delay)),
307
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
308
 
                if options.approval_duration:
309
 
                    client.Set(client_interface, u"ApprovalDuration",
310
 
                               timedelta_to_milliseconds
311
 
                               (string_to_delta(options.
312
 
                                                approval_duration)),
313
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
314
 
                if options.timeout:
315
 
                    client.Set(client_interface, u"Timeout",
316
 
                               timedelta_to_milliseconds
317
 
                               (string_to_delta(options.timeout)),
318
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
319
 
                if options.secret:
320
 
                    client.Set(client_interface, u"Secret",
321
 
                               dbus.ByteArray(open(options.secret,
322
 
                                                   u'rb').read()),
323
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
324
 
                if options.approved_by_default is not None:
325
 
                    client.Set(client_interface, u"ApprovedByDefault",
326
 
                               dbus.Boolean(options
327
 
                                            .approved_by_default),
328
 
                               dbus_interface=dbus.PROPERTIES_IFACE)
329
 
                if options.approve:
330
 
                    client.Approve(dbus.Boolean(True),
331
 
                                   dbus_interface=client_interface)
332
 
                elif options.deny:
333
 
                    client.Approve(dbus.Boolean(False),
334
 
                                   dbus_interface=client_interface)
 
275
            keywords = defaultkeywords
 
276
        
 
277
        print_clients(clients.values(), keywords)
 
278
    else:
 
279
        # Process each client in the list by all selected options
 
280
        for client in clients:
 
281
            if options.remove:
 
282
                mandos_serv.RemoveClient(client.__dbus_object_path__)
 
283
            if options.enable:
 
284
                client.Enable(dbus_interface=client_interface)
 
285
            if options.disable:
 
286
                client.Disable(dbus_interface=client_interface)
 
287
            if options.bump_timeout:
 
288
                client.CheckedOK(dbus_interface=client_interface)
 
289
            if options.start_checker:
 
290
                client.StartChecker(dbus_interface=client_interface)
 
291
            if options.stop_checker:
 
292
                client.StopChecker(dbus_interface=client_interface)
 
293
            if options.is_enabled:
 
294
                sys.exit(0 if client.Get(client_interface,
 
295
                                         "Enabled",
 
296
                                         dbus_interface=
 
297
                                         dbus.PROPERTIES_IFACE)
 
298
                         else 1)
 
299
            if options.checker:
 
300
                client.Set(client_interface, "Checker",
 
301
                           options.checker,
 
302
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
303
            if options.host:
 
304
                client.Set(client_interface, "Host", options.host,
 
305
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
306
            if options.interval:
 
307
                client.Set(client_interface, "Interval",
 
308
                           timedelta_to_milliseconds
 
309
                           (string_to_delta(options.interval)),
 
310
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
311
            if options.approval_delay:
 
312
                client.Set(client_interface, "ApprovalDelay",
 
313
                           timedelta_to_milliseconds
 
314
                           (string_to_delta(options.
 
315
                                            approval_delay)),
 
316
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
317
            if options.approval_duration:
 
318
                client.Set(client_interface, "ApprovalDuration",
 
319
                           timedelta_to_milliseconds
 
320
                           (string_to_delta(options.
 
321
                                            approval_duration)),
 
322
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
323
            if options.timeout:
 
324
                client.Set(client_interface, "Timeout",
 
325
                           timedelta_to_milliseconds
 
326
                           (string_to_delta(options.timeout)),
 
327
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
328
            if options.secret:
 
329
                client.Set(client_interface, "Secret",
 
330
                           dbus.ByteArray(open(options.secret,
 
331
                                               "rb").read()),
 
332
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
333
            if options.approved_by_default is not None:
 
334
                client.Set(client_interface, "ApprovedByDefault",
 
335
                           dbus.Boolean(options
 
336
                                        .approved_by_default),
 
337
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
338
            if options.approve:
 
339
                client.Approve(dbus.Boolean(True),
 
340
                               dbus_interface=client_interface)
 
341
            elif options.deny:
 
342
                client.Approve(dbus.Boolean(False),
 
343
                               dbus_interface=client_interface)
335
344
 
336
 
if __name__ == '__main__':
 
345
if __name__ == "__main__":
337
346
    main()