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  • Committer: teddy at bsnet
  • Date: 2010-09-27 16:27:13 UTC
  • Revision ID: teddy@fukt.bsnet.se-20100927162713-jucnyd63612ximvw
* mandos-monitor: Change key for removing a client from "r" to "R".

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mandos-ctl
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# Contact the authors at <mandos@fukt.bsnet.se>.
23
23
# 
24
24
 
25
 
from __future__ import (division, absolute_import, print_function,
26
 
                        unicode_literals)
27
 
 
 
25
from __future__ import division
28
26
import sys
29
27
import dbus
30
 
import argparse
 
28
from optparse import OptionParser
31
29
import locale
32
30
import datetime
33
31
import re
34
32
import os
35
33
 
36
 
locale.setlocale(locale.LC_ALL, "")
 
34
locale.setlocale(locale.LC_ALL, u'')
37
35
 
38
36
tablewords = {
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",
 
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',
55
53
    }
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"
 
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 = "1.0.14"
63
61
 
64
62
def timedelta_to_milliseconds(td):
65
 
    """Convert a datetime.timedelta object to milliseconds"""
 
63
    "Convert a datetime.timedelta object to milliseconds"
66
64
    return ((td.days * 24 * 60 * 60 * 1000)
67
65
            + (td.seconds * 1000)
68
66
            + (td.microseconds // 1000))
69
67
 
70
68
def milliseconds_to_string(ms):
71
69
    td = datetime.timedelta(0, 0, 0, ms)
72
 
    return ("%(days)s%(hours)02d:%(minutes)02d:%(seconds)02d"
 
70
    return (u"%(days)s%(hours)02d:%(minutes)02d:%(seconds)02d"
73
71
            % { "days": "%dT" % td.days if td.days else "",
74
72
                "hours": td.seconds // 3600,
75
73
                "minutes": (td.seconds % 3600) // 60,
76
74
                "seconds": td.seconds % 60,
77
75
                })
78
76
 
 
77
 
79
78
def string_to_delta(interval):
80
79
    """Parse a string and return a datetime.timedelta
81
 
    
82
 
    >>> string_to_delta("7d")
 
80
 
 
81
    >>> string_to_delta('7d')
83
82
    datetime.timedelta(7)
84
 
    >>> string_to_delta("60s")
 
83
    >>> string_to_delta('60s')
85
84
    datetime.timedelta(0, 60)
86
 
    >>> string_to_delta("60m")
 
85
    >>> string_to_delta('60m')
87
86
    datetime.timedelta(0, 3600)
88
 
    >>> string_to_delta("24h")
 
87
    >>> string_to_delta('24h')
89
88
    datetime.timedelta(1)
90
 
    >>> string_to_delta("1w")
 
89
    >>> string_to_delta(u'1w')
91
90
    datetime.timedelta(7)
92
 
    >>> string_to_delta("5m 30s")
 
91
    >>> string_to_delta('5m 30s')
93
92
    datetime.timedelta(0, 330)
94
93
    """
95
94
    timevalue = datetime.timedelta(0)
99
98
        try:
100
99
            suffix = unicode(s[-1])
101
100
            value = int(s[:-1])
102
 
            if suffix == "d":
 
101
            if suffix == u"d":
103
102
                delta = datetime.timedelta(value)
104
 
            elif suffix == "s":
 
103
            elif suffix == u"s":
105
104
                delta = datetime.timedelta(0, value)
106
 
            elif suffix == "m":
 
105
            elif suffix == u"m":
107
106
                delta = datetime.timedelta(0, 0, 0, 0, value)
108
 
            elif suffix == "h":
 
107
            elif suffix == u"h":
109
108
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
110
 
            elif suffix == "w":
 
109
            elif suffix == u"w":
111
110
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
112
111
            else:
113
112
                raise ValueError
119
118
def print_clients(clients, keywords):
120
119
    def valuetostring(value, keyword):
121
120
        if type(value) is dbus.Boolean:
122
 
            return "Yes" if value else "No"
123
 
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
124
 
                       "ApprovalDuration"):
 
121
            return u"Yes" if value else u"No"
 
122
        if keyword in (u"Timeout", u"Interval", u"ApprovalDelay",
 
123
                       u"ApprovalDuration"):
125
124
            return milliseconds_to_string(value)
126
125
        return unicode(value)
127
126
    
128
127
    # Create format string to print table rows
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)
 
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)
136
135
    # Print header line
137
 
    print(format_string % tuple(tablewords[key] for key in keywords))
 
136
    print format_string % tuple(tablewords[key] for key in keywords)
138
137
    for client in clients:
139
 
        print(format_string % tuple(valuetostring(client[key], key)
140
 
                                    for key in keywords))
 
138
        print format_string % tuple(valuetostring(client[key], key)
 
139
                                    for key in keywords)
141
140
 
142
141
def has_actions(options):
143
142
    return any((options.enable,
157
156
                options.secret is not None,
158
157
                options.approve,
159
158
                options.deny))
160
 
 
 
159
        
161
160
def main():
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
 
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')
260
267
            else:
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")
 
268
                keywords = defaultkeywords
 
269
            
 
270
            print_clients(clients.values(), keywords)
274
271
        else:
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)
 
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)
344
335
 
345
 
if __name__ == "__main__":
 
336
if __name__ == '__main__':
346
337
    main()