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  • Committer: Teddy Hogeborn
  • Date: 2016-03-17 20:40:55 UTC
  • Revision ID: teddy@recompile.se-20160317204055-bhsh5xsidq7w5cxu
Client: Fix plymouth agent; broken since 1.7.2.

Fix an very old memory bug in the plymouth agent (which has been
present since its apperance in version 1.2), but which was only
recently detected at run time due to the new -fsanitize=address
compile- time flag, which has been used since version 1.7.2.  This
detection of a memory access violation causes the program to abort,
making the Plymouth graphical boot system unable to accept interactive
input of passwords when using the Mandos client.

* plugins.d/plymouth.c (exec_and_wait): Fix memory allocation bug when
  allocating new_argv.  Also tolerate a zero-length argv.

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mandos-ctl
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3
# 
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# Mandos Monitor - Control and monitor the Mandos server
5
5
# 
6
 
# Copyright © 2008-2014 Teddy Hogeborn
7
 
# Copyright © 2008-2014 Björn Påhlsson
 
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# Copyright © 2008-2016 Teddy Hogeborn
 
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# Copyright © 2008-2016 Björn Påhlsson
8
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# 
9
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# This program is free software: you can redistribute it and/or modify
10
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# it under the terms of the GNU General Public License as published by
42
42
 
43
43
import dbus
44
44
 
45
 
if sys.version_info[0] == 2:
 
45
if sys.version_info.major == 2:
46
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    str = unicode
47
47
 
48
48
locale.setlocale(locale.LC_ALL, "")
64
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    "ApprovalDelay": "Approval Delay",
65
65
    "ApprovalDuration": "Approval Duration",
66
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    "Checker": "Checker",
67
 
    "ExtendedTimeout" : "Extended Timeout"
68
 
    }
 
67
    "ExtendedTimeout": "Extended Timeout"
 
68
}
69
69
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
70
70
domain = "se.recompile"
71
71
busname = domain + ".Mandos"
72
72
server_path = "/"
73
73
server_interface = domain + ".Mandos"
74
74
client_interface = domain + ".Mandos.Client"
75
 
version = "1.6.6"
76
 
 
77
 
def timedelta_to_milliseconds(td):
78
 
    """Convert a datetime.timedelta object to milliseconds"""
79
 
    return ((td.days * 24 * 60 * 60 * 1000)
80
 
            + (td.seconds * 1000)
81
 
            + (td.microseconds // 1000))
 
75
version = "1.7.6"
 
76
 
 
77
 
 
78
try:
 
79
    dbus.OBJECT_MANAGER_IFACE
 
80
except AttributeError:
 
81
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
82
82
 
83
83
def milliseconds_to_string(ms):
84
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    td = datetime.timedelta(0, 0, 0, ms)
85
 
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}"
86
 
            .format(days = "{0}T".format(td.days) if td.days else "",
87
 
                    hours = td.seconds // 3600,
88
 
                    minutes = (td.seconds % 3600) // 60,
89
 
                    seconds = td.seconds % 60,
90
 
                    ))
 
85
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}".format(
 
86
        days = "{}T".format(td.days) if td.days else "",
 
87
        hours = td.seconds // 3600,
 
88
        minutes = (td.seconds % 3600) // 60,
 
89
        seconds = td.seconds % 60))
91
90
 
92
91
 
93
92
def rfc3339_duration_to_delta(duration):
117
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    # avoid excessive use of external libraries.
118
117
    
119
118
    # New type for defining tokens, syntax, and semantics all-in-one
120
 
    Token = collections.namedtuple("Token",
121
 
                                   ("regexp", # To match token; if
122
 
                                              # "value" is not None,
123
 
                                              # must have a "group"
124
 
                                              # containing digits
125
 
                                    "value",  # datetime.timedelta or
126
 
                                              # None
127
 
                                    "followers")) # Tokens valid after
128
 
                                                  # this token
 
119
    Token = collections.namedtuple("Token", (
 
120
        "regexp",  # To match token; if "value" is not None, must have
 
121
                   # a "group" containing digits
 
122
        "value",   # datetime.timedelta or None
 
123
        "followers"))           # Tokens valid after this token
129
124
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
130
125
    # the "duration" ABNF definition in RFC 3339, Appendix A.
131
126
    token_end = Token(re.compile(r"$"), None, frozenset())
132
127
    token_second = Token(re.compile(r"(\d+)S"),
133
128
                         datetime.timedelta(seconds=1),
134
 
                         frozenset((token_end,)))
 
129
                         frozenset((token_end, )))
135
130
    token_minute = Token(re.compile(r"(\d+)M"),
136
131
                         datetime.timedelta(minutes=1),
137
132
                         frozenset((token_second, token_end)))
153
148
                       frozenset((token_month, token_end)))
154
149
    token_week = Token(re.compile(r"(\d+)W"),
155
150
                       datetime.timedelta(weeks=1),
156
 
                       frozenset((token_end,)))
 
151
                       frozenset((token_end, )))
157
152
    token_duration = Token(re.compile(r"P"), None,
158
153
                           frozenset((token_year, token_month,
159
154
                                      token_day, token_time,
160
 
                                      token_week))),
 
155
                                      token_week)))
161
156
    # Define starting values
162
157
    value = datetime.timedelta() # Value so far
163
158
    found_token = None
164
 
    followers = frozenset(token_duration,) # Following valid tokens
 
159
    followers = frozenset((token_duration, )) # Following valid tokens
165
160
    s = duration                # String left to parse
166
161
    # Loop until end token is found
167
162
    while found_token is not token_end:
184
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                break
185
180
        else:
186
181
            # No currently valid tokens were found
187
 
            raise ValueError("Invalid RFC 3339 duration")
 
182
            raise ValueError("Invalid RFC 3339 duration: {!r}"
 
183
                             .format(duration))
188
184
    # End token found
189
185
    return value
190
186
 
192
188
def string_to_delta(interval):
193
189
    """Parse a string and return a datetime.timedelta
194
190
    
195
 
    >>> string_to_delta("7d")
 
191
    >>> string_to_delta('7d')
196
192
    datetime.timedelta(7)
197
 
    >>> string_to_delta("60s")
 
193
    >>> string_to_delta('60s')
198
194
    datetime.timedelta(0, 60)
199
 
    >>> string_to_delta("60m")
 
195
    >>> string_to_delta('60m')
200
196
    datetime.timedelta(0, 3600)
201
 
    >>> string_to_delta("24h")
 
197
    >>> string_to_delta('24h')
202
198
    datetime.timedelta(1)
203
 
    >>> string_to_delta("1w")
 
199
    >>> string_to_delta('1w')
204
200
    datetime.timedelta(7)
205
 
    >>> string_to_delta("5m 30s")
 
201
    >>> string_to_delta('5m 30s')
206
202
    datetime.timedelta(0, 330)
207
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    """
208
204
    
229
225
            value += datetime.timedelta(0, 0, 0, int(num))
230
226
    return value
231
227
 
 
228
 
232
229
def print_clients(clients, keywords):
233
230
    def valuetostring(value, keyword):
234
231
        if type(value) is dbus.Boolean:
240
237
    
241
238
    # Create format string to print table rows
242
239
    format_string = " ".join("{{{key}:{width}}}".format(
243
 
            width = max(len(tablewords[key]),
244
 
                        max(len(valuetostring(client[key],
245
 
                                              key))
246
 
                            for client in
247
 
                            clients)),
248
 
            key = key) for key in keywords)
 
240
        width = max(len(tablewords[key]),
 
241
                    max(len(valuetostring(client[key], key))
 
242
                        for client in clients)),
 
243
        key = key)
 
244
                             for key in keywords)
249
245
    # Print header line
250
246
    print(format_string.format(**tablewords))
251
247
    for client in clients:
252
 
        print(format_string.format(**dict((key,
253
 
                                           valuetostring(client[key],
254
 
                                                         key))
255
 
                                          for key in keywords)))
 
248
        print(format_string.format(**{
 
249
            key: valuetostring(client[key], key)
 
250
            for key in keywords }))
 
251
 
256
252
 
257
253
def has_actions(options):
258
254
    return any((options.enable,
274
270
                options.approve,
275
271
                options.deny))
276
272
 
 
273
 
277
274
def main():
278
275
    parser = argparse.ArgumentParser()
279
276
    parser.add_argument("--version", action="version",
280
 
                        version = "%(prog)s {0}".format(version),
 
277
                        version = "%(prog)s {}".format(version),
281
278
                        help="show version number and exit")
282
279
    parser.add_argument("-a", "--all", action="store_true",
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                        help="Select all clients")
344
341
        bus = dbus.SystemBus()
345
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        mandos_dbus_objc = bus.get_object(busname, server_path)
346
343
    except dbus.exceptions.DBusException:
347
 
        print("Could not connect to Mandos server",
348
 
              file=sys.stderr)
 
344
        print("Could not connect to Mandos server", file=sys.stderr)
349
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        sys.exit(1)
350
346
    
351
347
    mandos_serv = dbus.Interface(mandos_dbus_objc,
352
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                                 dbus_interface = server_interface)
 
349
    mandos_serv_object_manager = dbus.Interface(
 
350
        mandos_dbus_objc, dbus_interface = dbus.OBJECT_MANAGER_IFACE)
353
351
    
354
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    #block stderr since dbus library prints to stderr
355
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    null = os.open(os.path.devnull, os.O_RDWR)
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    os.close(null)
359
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    try:
360
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        try:
361
 
            mandos_clients = mandos_serv.GetAllClientsWithProperties()
 
359
            mandos_clients = { path: ifs_and_props[client_interface]
 
360
                               for path, ifs_and_props in
 
361
                               mandos_serv_object_manager
 
362
                               .GetManagedObjects().items()
 
363
                               if client_interface in ifs_and_props }
362
364
        finally:
363
365
            #restore stderr
364
366
            os.dup2(stderrcopy, sys.stderr.fileno())
365
367
            os.close(stderrcopy)
366
 
    except dbus.exceptions.DBusException:
367
 
        print("Access denied: Accessing mandos server through dbus.",
368
 
              file=sys.stderr)
 
368
    except dbus.exceptions.DBusException as e:
 
369
        print("Access denied: Accessing mandos server through D-Bus: {}"
 
370
              .format(e), file=sys.stderr)
369
371
        sys.exit(1)
370
372
    
371
373
    # Compile dict of (clients: properties) to process
372
374
    clients={}
373
375
    
374
376
    if options.all or not options.client:
375
 
        clients = dict((bus.get_object(busname, path), properties)
376
 
                       for path, properties in
377
 
                       mandos_clients.items())
 
377
        clients = { bus.get_object(busname, path): properties
 
378
                    for path, properties in mandos_clients.items() }
378
379
    else:
379
380
        for name in options.client:
380
 
            for path, client in mandos_clients.iteritems():
 
381
            for path, client in mandos_clients.items():
381
382
                if client["Name"] == name:
382
383
                    client_objc = bus.get_object(busname, path)
383
384
                    clients[client_objc] = client
384
385
                    break
385
386
            else:
386
 
                print("Client not found on server: {0!r}"
 
387
                print("Client not found on server: {!r}"
387
388
                      .format(name), file=sys.stderr)
388
389
                sys.exit(1)
389
390
    
390
391
    if not has_actions(options) and clients:
391
392
        if options.verbose:
392
 
            keywords = ("Name", "Enabled", "Timeout",
393
 
                        "LastCheckedOK", "Created", "Interval",
394
 
                        "Host", "Fingerprint", "CheckerRunning",
395
 
                        "LastEnabled", "ApprovalPending",
396
 
                        "ApprovedByDefault",
 
393
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
 
394
                        "Created", "Interval", "Host", "Fingerprint",
 
395
                        "CheckerRunning", "LastEnabled",
 
396
                        "ApprovalPending", "ApprovedByDefault",
397
397
                        "LastApprovalRequest", "ApprovalDelay",
398
398
                        "ApprovalDuration", "Checker",
399
399
                        "ExtendedTimeout")
404
404
    else:
405
405
        # Process each client in the list by all selected options
406
406
        for client in clients:
 
407
            
407
408
            def set_client_prop(prop, value):
408
409
                """Set a Client D-Bus property"""
409
410
                client.Set(client_interface, prop, value,
410
411
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
412
            
411
413
            def set_client_prop_ms(prop, value):
412
414
                """Set a Client D-Bus property, converted
413
415
                from a string to milliseconds."""
414
416
                set_client_prop(prop,
415
 
                                timedelta_to_milliseconds
416
 
                                (string_to_delta(value)))
 
417
                                string_to_delta(value).total_seconds()
 
418
                                * 1000)
 
419
            
417
420
            if options.remove:
418
421
                mandos_serv.RemoveClient(client.__dbus_object_path__)
419
422
            if options.enable:
463
466
                client.Approve(dbus.Boolean(False),
464
467
                               dbus_interface=client_interface)
465
468
 
 
469
 
466
470
if __name__ == "__main__":
467
471
    main()