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  • Committer: Teddy Hogeborn
  • Date: 2019-08-02 22:16:53 UTC
  • Revision ID: teddy@recompile.se-20190802221653-ic1iko9hbefzwsk7
Fix bug in server Debian package: Fails to start on first install

There has been a very long-standing bug where installation of the
server (the "mandos" Debian package) would fail to start the server
properly right after installation.  It would work on manual (re)start
after installation, or after reboot, and even after package purge and
reinstall, it would then work the first time.  The problem, it turns
out, is when the new "_mandos" user (and corresponding group) is
created, the D-Bus server is not reloaded, and is therefore not aware
of that user, and does not recognize the user and group name in the
/etc/dbus-1/system.d/mandos.conf file.  The Mandos server, when it
tries to start and access the D-Bus, is then not permitted to connect
to its D-Bus bus name, and disables D-Bus use as a fallback measure;
i.e. the server works, but it is not controllable via D-Bus commands
(via mandos-ctl or mandos-monitor).  The next time the D-Bus daemon is
reloaded for any reason, the new user & group would become visible to
the D-Bus daemon and after that, any restart of the Mandos server
would succeed and it would bind to its D-Bus name properly, and
thereby be visible and controllable by mandos-ctl & mandos-monitor.
This was mostly invisible when using sysvinit, but systemd makes the
problem visible since the systemd service file for the Mandos server
is configured to not consider the Mandos server "started" until the
D-Bus name has been bound; this makes the starting of the service wait
for 90 seconds and then fail with a timeout error.

Fixing this should also make the Debian CI autopkgtest tests work.

* debian/mandos.postinst (configure): After creating (or renaming)
                                      user & group, reload D-Bus
                                      daemon (if present).

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mandos-ctl
1
 
#!/usr/bin/python3 -bbI
 
1
#!/usr/bin/python
2
2
# -*- after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
3
#
4
4
# Mandos Monitor - Control and monitor the Mandos server
46
46
import tempfile
47
47
import contextlib
48
48
 
49
 
if sys.version_info.major == 2:
50
 
    __metaclass__ = type
51
 
    str = unicode
52
 
 
53
 
class gi:
54
 
    """Dummy gi module, for the tests"""
55
 
    class repository:
56
 
        class GLib:
57
 
            class Error(Exception):
58
 
                pass
59
 
dbussy = None
60
 
ravel = None
61
 
dbus_python = None
62
 
pydbus = None
63
 
 
64
49
try:
65
 
    import dbussy
66
 
    import ravel
 
50
    import pydbus
 
51
    import gi
 
52
    dbus_python = None
67
53
except ImportError:
68
 
    try:
69
 
        import pydbus
70
 
        import gi
71
 
    except ImportError:
72
 
        import dbus as dbus_python
73
 
 
 
54
    import dbus as dbus_python
 
55
    pydbus = None
 
56
    class gi(object):
 
57
        """Dummy gi module, for the tests"""
 
58
        class repository(object):
 
59
            class GLib(object):
 
60
                class Error(Exception):
 
61
                    pass
74
62
 
75
63
# Show warnings by default
76
64
if not sys.warnoptions:
84
72
logging.captureWarnings(True)   # Show warnings via the logging system
85
73
 
86
74
if sys.version_info.major == 2:
 
75
    str = unicode
87
76
    import StringIO
88
77
    io.StringIO = StringIO.StringIO
89
78
 
90
79
locale.setlocale(locale.LC_ALL, "")
91
80
 
92
 
version = "1.8.9"
 
81
version = "1.8.5"
93
82
 
94
83
 
95
84
def main():
104
93
    if options.debug:
105
94
        log.setLevel(logging.DEBUG)
106
95
 
107
 
    if dbussy is not None and ravel is not None:
108
 
        bus = dbussy_adapter.CachingBus(dbussy, ravel)
109
 
    elif pydbus is not None:
 
96
    if pydbus is not None:
110
97
        bus = pydbus_adapter.CachingBus(pydbus)
111
98
    else:
112
99
        bus = dbus_python_adapter.CachingBus(dbus_python)
480
467
        parser.error("--remove can only be combined with --deny")
481
468
 
482
469
 
483
 
class dbus:
 
470
class dbus(object):
484
471
 
485
 
    class SystemBus:
 
472
    class SystemBus(object):
486
473
 
487
474
        object_manager_iface = "org.freedesktop.DBus.ObjectManager"
488
475
        def get_managed_objects(self, busname, objectpath):
497
484
                             self.properties_iface, interface, key,
498
485
                             value)
499
486
 
500
 
        def call_method(self, methodname, busname, objectpath,
501
 
                        interface, *args):
502
 
            raise NotImplementedError()
503
 
 
504
487
 
505
488
    class MandosBus(SystemBus):
506
489
        busname_domain = "se.recompile"
538
521
        pass
539
522
 
540
523
 
541
 
class dbus_python_adapter:
 
524
class dbus_python_adapter(object):
542
525
 
543
526
    class SystemBus(dbus.MandosBus):
544
527
        """Use dbus-python"""
598
581
                                     self.client_interface, key,
599
582
                                     value)
600
583
 
601
 
    class SilenceLogger:
 
584
    class SilenceLogger(object):
602
585
        "Simple context manager to silence a particular logger"
603
586
        def __init__(self, loggername):
604
587
            self.logger = logging.getLogger(loggername)
633
616
                return new_object
634
617
 
635
618
 
636
 
class pydbus_adapter:
 
619
class pydbus_adapter(object):
637
620
    class SystemBus(dbus.MandosBus):
638
621
        def __init__(self, module=pydbus):
639
622
            self.pydbus = module
696
679
                return new_object
697
680
 
698
681
 
699
 
class dbussy_adapter:
700
 
    class SystemBus(dbus.SystemBus):
701
 
        """Use DBussy"""
702
 
 
703
 
        def __init__(self, dbussy, ravel):
704
 
            self.dbussy = dbussy
705
 
            self.ravel = ravel
706
 
            self.bus = ravel.system_bus()
707
 
 
708
 
        @contextlib.contextmanager
709
 
        def convert_exception(self, exception_class=dbus.Error):
710
 
            try:
711
 
                yield
712
 
            except self.dbussy.DBusError as e:
713
 
                # This does what "raise from" would do
714
 
                exc = exception_class(*e.args)
715
 
                exc.__cause__ = e
716
 
                raise exc
717
 
 
718
 
        def call_method(self, methodname, busname, objectpath,
719
 
                        interface, *args):
720
 
            proxy_object = self.get_object(busname, objectpath)
721
 
            log.debug("D-Bus: %s:%s:%s.%s(%s)", busname, objectpath,
722
 
                      interface, methodname,
723
 
                      ", ".join(repr(a) for a in args))
724
 
            iface = proxy_object.get_interface(interface)
725
 
            method = getattr(iface, methodname)
726
 
            with self.convert_exception(dbus.Error):
727
 
                value =  method(*args)
728
 
            # DBussy returns values either as an empty list or as a
729
 
            # tuple: (signature, value)
730
 
            if value:
731
 
                return self.type_filter(value[0])
732
 
 
733
 
        def get_object(self, busname, objectpath):
734
 
            log.debug("D-Bus: Connect to: (busname=%r, path=%r)",
735
 
                      busname, objectpath)
736
 
            with self.convert_exception(dbus.ConnectFailed):
737
 
                return self.bus[busname][objectpath]
738
 
 
739
 
        def type_filter(self, value):
740
 
            """Convert the most bothersome types to Python types"""
741
 
            if isinstance(value, tuple):
742
 
                if (len(value) == 2
743
 
                    and isinstance(value[0],
744
 
                                   self.dbussy.DBUS.Signature)):
745
 
                    return self.type_filter(value[1])
746
 
            elif isinstance(value, self.dbussy.DBUS.ObjectPath):
747
 
                return str(value)
748
 
            # Also recurse into dictionaries
749
 
            elif isinstance(value, dict):
750
 
                return {self.type_filter(key):
751
 
                        self.type_filter(subval)
752
 
                        for key, subval in value.items()}
753
 
            return value
754
 
 
755
 
        def set_property(self, busname, objectpath, interface, key,
756
 
                         value):
757
 
            proxy_object = self.get_object(busname, objectpath)
758
 
            log.debug("D-Bus: %s:%s:%s.Set(%r, %r, %r)", busname,
759
 
                      objectpath, self.properties_iface, interface,
760
 
                      key, value)
761
 
            if key == "Secret":
762
 
                # DBussy wants a Byte Array to be a sequence of
763
 
                # values, not a byte string
764
 
                value = tuple(value)
765
 
            setattr(proxy_object.get_interface(interface), key, value)
766
 
 
767
 
    class MandosBus(SystemBus, dbus.MandosBus):
768
 
        pass
769
 
 
770
 
    class CachingBus(MandosBus):
771
 
        """A caching layer for dbussy_adapter.MandosBus"""
772
 
        def __init__(self, *args, **kwargs):
773
 
            self.object_cache = {}
774
 
            super(dbussy_adapter.CachingBus, self).__init__(*args,
775
 
                                                            **kwargs)
776
 
        def get_object(self, busname, objectpath):
777
 
            try:
778
 
                return self.object_cache[(busname, objectpath)]
779
 
            except KeyError:
780
 
                new_object = super(
781
 
                    dbussy_adapter.CachingBus,
782
 
                    self).get_object(busname, objectpath)
783
 
                self.object_cache[(busname, objectpath)]  = new_object
784
 
                return new_object
785
 
 
786
 
 
787
682
def commands_from_options(options):
788
683
 
789
684
    commands = list(options.commands)
817
712
    return commands
818
713
 
819
714
 
820
 
class command:
 
715
class command(object):
821
716
    """A namespace for command classes"""
822
717
 
823
 
    class Base:
 
718
    class Base(object):
824
719
        """Abstract base class for commands"""
825
720
        def run(self, clients, bus=None):
826
721
            """Normal commands should implement run_on_one_client(),
889
784
                keywords = self.all_keywords
890
785
            print(self.TableOfClients(clients.values(), keywords))
891
786
 
892
 
        class TableOfClients:
 
787
        class TableOfClients(object):
893
788
            tableheaders = {
894
789
                "Name": "Name",
895
790
                "Enabled": "Enabled",
1126
1021
                                                     "output"))
1127
1022
 
1128
1023
 
1129
 
class Unique:
 
1024
class Unique(object):
1130
1025
    """Class for objects which exist only to be unique objects, since
1131
1026
unittest.mock.sentinel only exists in Python 3.3"""
1132
1027
 
1416
1311
class Test_dbus_python_adapter_SystemBus(TestCaseWithAssertLogs):
1417
1312
 
1418
1313
    def MockDBusPython_func(self, func):
1419
 
        class mock_dbus_python:
 
1314
        class mock_dbus_python(object):
1420
1315
            """mock dbus-python module"""
1421
 
            class exceptions:
 
1316
            class exceptions(object):
1422
1317
                """Pseudo-namespace"""
1423
1318
                class DBusException(Exception):
1424
1319
                    pass
1425
 
            class SystemBus:
 
1320
            class SystemBus(object):
1426
1321
                @staticmethod
1427
1322
                def get_object(busname, objectpath):
1428
1323
                    DBusObject = collections.namedtuple(
1442
1337
                                    dbus_interface=dbus_interface)
1443
1338
                    return DBusObject(methodname=method,
1444
1339
                                      Set=set_property)
1445
 
            class Boolean:
 
1340
            class Boolean(object):
1446
1341
                def __init__(self, value):
1447
1342
                    self.value = bool(value)
1448
1343
                def __bool__(self):
1632
1527
        finally:
1633
1528
            dbus_logger.removeFilter(counting_handler)
1634
1529
 
1635
 
        self.assertNotIsInstance(e.exception, dbus.ConnectFailed)
 
1530
        self.assertNotIsInstance(e, dbus.ConnectFailed)
1636
1531
 
1637
1532
        # Make sure the dbus logger was suppressed
1638
1533
        self.assertEqual(0, counting_handler.count)
1660
1555
            self.call_method(bus, "methodname", "busname",
1661
1556
                             "objectpath", "interface")
1662
1557
 
1663
 
    class fake_dbus_python_raises_exception_on_connect:
 
1558
    class fake_dbus_python_raises_exception_on_connect(object):
1664
1559
        """fake dbus-python module"""
1665
 
        class exceptions:
 
1560
        class exceptions(object):
1666
1561
            """Pseudo-namespace"""
1667
1562
            class DBusException(Exception):
1668
1563
                pass
1676
1571
 
1677
1572
 
1678
1573
class Test_dbus_python_adapter_CachingBus(unittest.TestCase):
1679
 
    class mock_dbus_python:
 
1574
    class mock_dbus_python(object):
1680
1575
        """mock dbus-python modules"""
1681
 
        class SystemBus:
 
1576
        class SystemBus(object):
1682
1577
            @staticmethod
1683
1578
            def get_object(busname, objectpath):
1684
1579
                return Unique()
1730
1625
class Test_pydbus_adapter_SystemBus(TestCaseWithAssertLogs):
1731
1626
 
1732
1627
    def Stub_pydbus_func(self, func):
1733
 
        class stub_pydbus:
 
1628
        class stub_pydbus(object):
1734
1629
            """stub pydbus module"""
1735
 
            class SystemBus:
 
1630
            class SystemBus(object):
1736
1631
                @staticmethod
1737
1632
                def get(busname, objectpath):
1738
1633
                    DBusObject = collections.namedtuple(
1775
1670
            self.call_method(bus, "methodname", "busname",
1776
1671
                             "objectpath", "interface")
1777
1672
 
1778
 
        self.assertNotIsInstance(e.exception, dbus.ConnectFailed)
 
1673
        self.assertNotIsInstance(e, dbus.ConnectFailed)
1779
1674
 
1780
1675
    def test_get_converts_to_correct_exception(self):
1781
1676
        bus = pydbus_adapter.SystemBus(
1784
1679
            self.call_method(bus, "methodname", "busname",
1785
1680
                             "objectpath", "interface")
1786
1681
 
1787
 
    class fake_pydbus_raises_exception_on_connect:
 
1682
    class fake_pydbus_raises_exception_on_connect(object):
1788
1683
        """fake dbus-python module"""
1789
1684
        @classmethod
1790
1685
        def SystemBus(cls):
1794
1689
            return Bus(get=get)
1795
1690
 
1796
1691
    def test_set_property_uses_setattr(self):
1797
 
        class Object:
 
1692
        class Object(object):
1798
1693
            pass
1799
1694
        obj = Object()
1800
 
        class pydbus_spy:
1801
 
            class SystemBus:
 
1695
        class pydbus_spy(object):
 
1696
            class SystemBus(object):
1802
1697
                @staticmethod
1803
1698
                def get(busname, objectpath):
1804
1699
                    return {"interface": obj}
1811
1706
    def test_get_suppresses_xml_deprecation_warning(self):
1812
1707
        if sys.version_info.major >= 3:
1813
1708
            return
1814
 
        class stub_pydbus_get:
1815
 
            class SystemBus:
 
1709
        class stub_pydbus_get(object):
 
1710
            class SystemBus(object):
1816
1711
                @staticmethod
1817
1712
                def get(busname, objectpath):
1818
1713
                    warnings.warn_explicit(
1826
1721
 
1827
1722
 
1828
1723
class Test_pydbus_adapter_CachingBus(unittest.TestCase):
1829
 
    class stub_pydbus:
 
1724
    class stub_pydbus(object):
1830
1725
        """stub pydbus module"""
1831
 
        class SystemBus:
 
1726
        class SystemBus(object):
1832
1727
            @staticmethod
1833
1728
            def get(busname, objectpath):
1834
1729
                return Unique()
1876
1771
        self.assertIs(obj1, obj1b)
1877
1772
 
1878
1773
 
1879
 
class Test_dbussy_adapter_SystemBus(TestCaseWithAssertLogs):
1880
 
 
1881
 
    class dummy_dbussy:
1882
 
        class DBUS:
1883
 
            class ObjectPath(str):
1884
 
                pass
1885
 
        class DBusError(Exception):
1886
 
            pass
1887
 
 
1888
 
    def fake_ravel_func(self, func):
1889
 
        class fake_ravel:
1890
 
            @staticmethod
1891
 
            def system_bus():
1892
 
                class DBusInterfaceProxy:
1893
 
                    @staticmethod
1894
 
                    def methodname(*args):
1895
 
                        return [func(*args)]
1896
 
                class DBusObject:
1897
 
                    @staticmethod
1898
 
                    def get_interface(interface):
1899
 
                        if interface == "interface":
1900
 
                            return DBusInterfaceProxy()
1901
 
                return {"busname": {"objectpath": DBusObject()}}
1902
 
        return fake_ravel
1903
 
 
1904
 
    def call_method(self, bus, methodname, busname, objectpath,
1905
 
                    interface, *args):
1906
 
        with self.assertLogs(log, logging.DEBUG):
1907
 
            return bus.call_method(methodname, busname, objectpath,
1908
 
                                   interface, *args)
1909
 
 
1910
 
    def test_call_method_returns(self):
1911
 
        expected_method_return = Unique()
1912
 
        method_args = (Unique(), Unique())
1913
 
        def func(*args):
1914
 
            self.assertEqual(len(method_args), len(args))
1915
 
            for marg, arg in zip(method_args, args):
1916
 
                self.assertIs(marg, arg)
1917
 
            return expected_method_return
1918
 
        fake_ravel = self.fake_ravel_func(func)
1919
 
        bus = dbussy_adapter.SystemBus(self.dummy_dbussy, fake_ravel)
1920
 
        ret = self.call_method(bus, "methodname", "busname",
1921
 
                               "objectpath", "interface",
1922
 
                               *method_args)
1923
 
        self.assertIs(ret, expected_method_return)
1924
 
 
1925
 
    def test_call_method_filters_objectpath(self):
1926
 
        def func():
1927
 
            return method_return
1928
 
        fake_ravel = self.fake_ravel_func(func)
1929
 
        bus = dbussy_adapter.SystemBus(self.dummy_dbussy, fake_ravel)
1930
 
        method_return = (self.dummy_dbussy.DBUS
1931
 
                         .ObjectPath("objectpath"))
1932
 
        ret = self.call_method(bus, "methodname", "busname",
1933
 
                               "objectpath", "interface")
1934
 
        self.assertEqual("objectpath", ret)
1935
 
        self.assertNotIsInstance(ret,
1936
 
                                 self.dummy_dbussy.DBUS.ObjectPath)
1937
 
 
1938
 
    def test_call_method_filters_objectpaths_in_dict(self):
1939
 
        ObjectPath = self.dummy_dbussy.DBUS.ObjectPath
1940
 
        def func():
1941
 
            return method_return
1942
 
        fake_ravel = self.fake_ravel_func(func)
1943
 
        bus = dbussy_adapter.SystemBus(self.dummy_dbussy, fake_ravel)
1944
 
        method_return = {
1945
 
            ObjectPath("objectpath_key_1"):
1946
 
            ObjectPath("objectpath_value_1"),
1947
 
            ObjectPath("objectpath_key_2"):
1948
 
            ObjectPath("objectpath_value_2"),
1949
 
        }
1950
 
        ret = self.call_method(bus, "methodname", "busname",
1951
 
                               "objectpath", "interface")
1952
 
        expected_method_return = {str(key): str(value)
1953
 
                                  for key, value in
1954
 
                                  method_return.items()}
1955
 
        for key, value in ret.items():
1956
 
            self.assertNotIsInstance(key, ObjectPath)
1957
 
            self.assertNotIsInstance(value, ObjectPath)
1958
 
        self.assertEqual(expected_method_return, ret)
1959
 
        self.assertIsInstance(ret, dict)
1960
 
 
1961
 
    def test_call_method_filters_objectpaths_in_dict_in_dict(self):
1962
 
        ObjectPath = self.dummy_dbussy.DBUS.ObjectPath
1963
 
        def func():
1964
 
            return method_return
1965
 
        fake_ravel = self.fake_ravel_func(func)
1966
 
        bus = dbussy_adapter.SystemBus(self.dummy_dbussy, fake_ravel)
1967
 
        method_return = {
1968
 
            ObjectPath("key1"): {
1969
 
                ObjectPath("key11"): ObjectPath("value11"),
1970
 
                ObjectPath("key12"): ObjectPath("value12"),
1971
 
            },
1972
 
            ObjectPath("key2"): {
1973
 
                ObjectPath("key21"): ObjectPath("value21"),
1974
 
                ObjectPath("key22"): ObjectPath("value22"),
1975
 
            },
1976
 
        }
1977
 
        ret = self.call_method(bus, "methodname", "busname",
1978
 
                               "objectpath", "interface")
1979
 
        expected_method_return = {
1980
 
            "key1": {"key11": "value11",
1981
 
                     "key12": "value12"},
1982
 
            "key2": {"key21": "value21",
1983
 
                     "key22": "value22"},
1984
 
        }
1985
 
        self.assertEqual(expected_method_return, ret)
1986
 
        for key, value in ret.items():
1987
 
            self.assertIsInstance(value, dict)
1988
 
            self.assertEqual(expected_method_return[key], value)
1989
 
            self.assertNotIsInstance(key, ObjectPath)
1990
 
            for inner_key, inner_value in value.items():
1991
 
                self.assertIsInstance(value, dict)
1992
 
                self.assertEqual(
1993
 
                    expected_method_return[key][inner_key],
1994
 
                    inner_value)
1995
 
                self.assertNotIsInstance(key, ObjectPath)
1996
 
 
1997
 
    def test_call_method_filters_objectpaths_in_dict_three_deep(self):
1998
 
        ObjectPath = self.dummy_dbussy.DBUS.ObjectPath
1999
 
        def func():
2000
 
            return method_return
2001
 
        fake_ravel = self.fake_ravel_func(func)
2002
 
        bus = dbussy_adapter.SystemBus(self.dummy_dbussy, fake_ravel)
2003
 
        method_return = {
2004
 
            ObjectPath("key1"): {
2005
 
                ObjectPath("key2"): {
2006
 
                    ObjectPath("key3"): ObjectPath("value"),
2007
 
                },
2008
 
            },
2009
 
        }
2010
 
        ret = self.call_method(bus, "methodname", "busname",
2011
 
                               "objectpath", "interface")
2012
 
        expected_method_return = {"key1": {"key2": {"key3": "value"}}}
2013
 
        self.assertEqual(expected_method_return, ret)
2014
 
        self.assertIsInstance(ret, dict)
2015
 
        self.assertNotIsInstance(next(iter(ret.keys())), ObjectPath)
2016
 
        self.assertIsInstance(ret["key1"], dict)
2017
 
        self.assertNotIsInstance(next(iter(ret["key1"].keys())),
2018
 
                                 ObjectPath)
2019
 
        self.assertIsInstance(ret["key1"]["key2"], dict)
2020
 
        self.assertNotIsInstance(
2021
 
            next(iter(ret["key1"]["key2"].keys())),
2022
 
            ObjectPath)
2023
 
        self.assertEqual("value", ret["key1"]["key2"]["key3"])
2024
 
        self.assertNotIsInstance(ret["key1"]["key2"]["key3"],
2025
 
                                 self.dummy_dbussy.DBUS.ObjectPath)
2026
 
 
2027
 
    def test_call_method_handles_exception(self):
2028
 
        def func():
2029
 
            raise self.dummy_dbussy.DBusError()
2030
 
 
2031
 
        fake_ravel = self.fake_ravel_func(func)
2032
 
        bus = dbussy_adapter.SystemBus(self.dummy_dbussy, fake_ravel)
2033
 
 
2034
 
        with self.assertRaises(dbus.Error) as e:
2035
 
            self.call_method(bus, "methodname", "busname",
2036
 
                             "objectpath", "interface")
2037
 
 
2038
 
        self.assertNotIsInstance(e.exception, dbus.ConnectFailed)
2039
 
 
2040
 
    def test_get_object_converts_to_correct_exception(self):
2041
 
        class fake_ravel_raises_exception_on_connect:
2042
 
            @staticmethod
2043
 
            def system_bus():
2044
 
                class Bus:
2045
 
                    @staticmethod
2046
 
                    def __getitem__(key):
2047
 
                        if key == "objectpath":
2048
 
                            raise self.dummy_dbussy.DBusError()
2049
 
                        raise Exception(key)
2050
 
                return {"busname": Bus()}
2051
 
        def func():
2052
 
            raise self.dummy_dbussy.DBusError()
2053
 
        bus = dbussy_adapter.SystemBus(
2054
 
            self.dummy_dbussy,
2055
 
            fake_ravel_raises_exception_on_connect)
2056
 
        with self.assertRaises(dbus.ConnectFailed):
2057
 
            self.call_method(bus, "methodname", "busname",
2058
 
                             "objectpath", "interface")
2059
 
 
2060
 
 
2061
1774
class Test_commands_from_options(unittest.TestCase):
2062
1775
 
2063
1776
    def setUp(self):