summaryrefslogtreecommitdiffstats
path: root/test/units/module_utils/basic/test_selinux.py
blob: 8562eb881a16f160214498a44206a56fc8ec303d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
# -*- coding: utf-8 -*-
# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
# (c) 2016 Toshio Kuratomi <tkuratomi@ansible.com>
# (c) 2017 Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

from __future__ import absolute_import, division, print_function
__metaclass__ = type

import errno
import json

from units.mock.procenv import ModuleTestCase, swap_stdin_and_argv

from units.compat.mock import patch, MagicMock, mock_open, Mock
from ansible.module_utils.six.moves import builtins

realimport = builtins.__import__


class TestSELinux(ModuleTestCase):
    def test_module_utils_basic_ansible_module_selinux_mls_enabled(self):
        from ansible.module_utils import basic
        basic._ANSIBLE_ARGS = None

        am = basic.AnsibleModule(
            argument_spec=dict(),
        )

        basic.HAVE_SELINUX = False
        self.assertEqual(am.selinux_mls_enabled(), False)

        basic.HAVE_SELINUX = True
        basic.selinux = Mock()
        with patch.dict('sys.modules', {'selinux': basic.selinux}):
            with patch('selinux.is_selinux_mls_enabled', return_value=0):
                self.assertEqual(am.selinux_mls_enabled(), False)
            with patch('selinux.is_selinux_mls_enabled', return_value=1):
                self.assertEqual(am.selinux_mls_enabled(), True)
        delattr(basic, 'selinux')

    def test_module_utils_basic_ansible_module_selinux_initial_context(self):
        from ansible.module_utils import basic
        basic._ANSIBLE_ARGS = None

        am = basic.AnsibleModule(
            argument_spec=dict(),
        )

        am.selinux_mls_enabled = MagicMock()
        am.selinux_mls_enabled.return_value = False
        self.assertEqual(am.selinux_initial_context(), [None, None, None])
        am.selinux_mls_enabled.return_value = True
        self.assertEqual(am.selinux_initial_context(), [None, None, None, None])

    def test_module_utils_basic_ansible_module_selinux_enabled(self):
        from ansible.module_utils import basic
        basic._ANSIBLE_ARGS = None

        am = basic.AnsibleModule(
            argument_spec=dict(),
        )

        # we first test the cases where the python selinux lib is
        # not installed, which has two paths: one in which the system
        # does have selinux installed (and the selinuxenabled command
        # is present and returns 0 when run), or selinux is not installed
        basic.HAVE_SELINUX = False
        am.get_bin_path = MagicMock()
        am.get_bin_path.return_value = '/path/to/selinuxenabled'
        am.run_command = MagicMock()
        am.run_command.return_value = (0, '', '')
        self.assertRaises(SystemExit, am.selinux_enabled)
        am.get_bin_path.return_value = None
        self.assertEqual(am.selinux_enabled(), False)

        # finally we test the case where the python selinux lib is installed,
        # and both possibilities there (enabled vs. disabled)
        basic.HAVE_SELINUX = True
        basic.selinux = Mock()
        with patch.dict('sys.modules', {'selinux': basic.selinux}):
            with patch('selinux.is_selinux_enabled', return_value=0):
                self.assertEqual(am.selinux_enabled(), False)
            with patch('selinux.is_selinux_enabled', return_value=1):
                self.assertEqual(am.selinux_enabled(), True)
        delattr(basic, 'selinux')

    def test_module_utils_basic_ansible_module_selinux_default_context(self):
        from ansible.module_utils import basic
        basic._ANSIBLE_ARGS = None

        am = basic.AnsibleModule(
            argument_spec=dict(),
        )

        am.selinux_initial_context = MagicMock(return_value=[None, None, None, None])
        am.selinux_enabled = MagicMock(return_value=True)

        # we first test the cases where the python selinux lib is not installed
        basic.HAVE_SELINUX = False
        self.assertEqual(am.selinux_default_context(path='/foo/bar'), [None, None, None, None])

        # all following tests assume the python selinux bindings are installed
        basic.HAVE_SELINUX = True

        basic.selinux = Mock()

        with patch.dict('sys.modules', {'selinux': basic.selinux}):
            # next, we test with a mocked implementation of selinux.matchpathcon to simulate
            # an actual context being found
            with patch('selinux.matchpathcon', return_value=[0, 'unconfined_u:object_r:default_t:s0']):
                self.assertEqual(am.selinux_default_context(path='/foo/bar'), ['unconfined_u', 'object_r', 'default_t', 's0'])

            # we also test the case where matchpathcon returned a failure
            with patch('selinux.matchpathcon', return_value=[-1, '']):
                self.assertEqual(am.selinux_default_context(path='/foo/bar'), [None, None, None, None])

            # finally, we test where an OSError occurred during matchpathcon's call
            with patch('selinux.matchpathcon', side_effect=OSError):
                self.assertEqual(am.selinux_default_context(path='/foo/bar'), [None, None, None, None])

        delattr(basic, 'selinux')

    def test_module_utils_basic_ansible_module_selinux_context(self):
        from ansible.module_utils import basic
        basic._ANSIBLE_ARGS = None

        am = basic.AnsibleModule(
            argument_spec=dict(),
        )

        am.selinux_initial_context = MagicMock(return_value=[None, None, None, None])
        am.selinux_enabled = MagicMock(return_value=True)

        # we first test the cases where the python selinux lib is not installed
        basic.HAVE_SELINUX = False
        self.assertEqual(am.selinux_context(path='/foo/bar'), [None, None, None, None])

        # all following tests assume the python selinux bindings are installed
        basic.HAVE_SELINUX = True

        basic.selinux = Mock()

        with patch.dict('sys.modules', {'selinux': basic.selinux}):
            # next, we test with a mocked implementation of selinux.lgetfilecon_raw to simulate
            # an actual context being found
            with patch('selinux.lgetfilecon_raw', return_value=[0, 'unconfined_u:object_r:default_t:s0']):
                self.assertEqual(am.selinux_context(path='/foo/bar'), ['unconfined_u', 'object_r', 'default_t', 's0'])

            # we also test the case where matchpathcon returned a failure
            with patch('selinux.lgetfilecon_raw', return_value=[-1, '']):
                self.assertEqual(am.selinux_context(path='/foo/bar'), [None, None, None, None])

            # finally, we test where an OSError occurred during matchpathcon's call
            e = OSError()
            e.errno = errno.ENOENT
            with patch('selinux.lgetfilecon_raw', side_effect=e):
                self.assertRaises(SystemExit, am.selinux_context, path='/foo/bar')

            e = OSError()
            with patch('selinux.lgetfilecon_raw', side_effect=e):
                self.assertRaises(SystemExit, am.selinux_context, path='/foo/bar')

        delattr(basic, 'selinux')

    def test_module_utils_basic_ansible_module_is_special_selinux_path(self):
        from ansible.module_utils import basic

        args = json.dumps(dict(ANSIBLE_MODULE_ARGS={'_ansible_selinux_special_fs': "nfs,nfsd,foos",
                                                    '_ansible_remote_tmp': "/tmp",
                                                    '_ansible_keep_remote_files': False}))

        with swap_stdin_and_argv(stdin_data=args):
            basic._ANSIBLE_ARGS = None
            am = basic.AnsibleModule(
                argument_spec=dict(),
            )

            def _mock_find_mount_point(path):
                if path.startswith('/some/path'):
                    return '/some/path'
                elif path.startswith('/weird/random/fstype'):
                    return '/weird/random/fstype'
                return '/'

            am.find_mount_point = MagicMock(side_effect=_mock_find_mount_point)
            am.selinux_context = MagicMock(return_value=['foo_u', 'foo_r', 'foo_t', 's0'])

            m = mock_open()
            m.side_effect = OSError

            with patch.object(builtins, 'open', m, create=True):
                self.assertEqual(am.is_special_selinux_path('/some/path/that/should/be/nfs'), (False, None))

            mount_data = [
                '/dev/disk1 / ext4 rw,seclabel,relatime,data=ordered 0 0\n',
                '1.1.1.1:/path/to/nfs /some/path nfs ro 0 0\n',
                'whatever /weird/random/fstype foos rw 0 0\n',
            ]

            # mock_open has a broken readlines() implementation apparently...
            # this should work by default but doesn't, so we fix it
            m = mock_open(read_data=''.join(mount_data))
            m.return_value.readlines.return_value = mount_data

            with patch.object(builtins, 'open', m, create=True):
                self.assertEqual(am.is_special_selinux_path('/some/random/path'), (False, None))
                self.assertEqual(am.is_special_selinux_path('/some/path/that/should/be/nfs'), (True, ['foo_u', 'foo_r', 'foo_t', 's0']))
                self.assertEqual(am.is_special_selinux_path('/weird/random/fstype/path'), (True, ['foo_u', 'foo_r', 'foo_t', 's0']))

    def test_module_utils_basic_ansible_module_set_context_if_different(self):
        from ansible.module_utils import basic
        basic._ANSIBLE_ARGS = None

        am = basic.AnsibleModule(
            argument_spec=dict(),
        )

        basic.HAVE_SELINUX = False

        am.selinux_enabled = MagicMock(return_value=False)
        self.assertEqual(am.set_context_if_different('/path/to/file', ['foo_u', 'foo_r', 'foo_t', 's0'], True), True)
        self.assertEqual(am.set_context_if_different('/path/to/file', ['foo_u', 'foo_r', 'foo_t', 's0'], False), False)

        basic.HAVE_SELINUX = True

        am.selinux_enabled = MagicMock(return_value=True)
        am.selinux_context = MagicMock(return_value=['bar_u', 'bar_r', None, None])
        am.is_special_selinux_path = MagicMock(return_value=(False, None))

        basic.selinux = Mock()
        with patch.dict('sys.modules', {'selinux': basic.selinux}):
            with patch('selinux.lsetfilecon', return_value=0) as m:
                self.assertEqual(am.set_context_if_different('/path/to/file', ['foo_u', 'foo_r', 'foo_t', 's0'], False), True)
                m.assert_called_with('/path/to/file', 'foo_u:foo_r:foo_t:s0')
                m.reset_mock()
                am.check_mode = True
                self.assertEqual(am.set_context_if_different('/path/to/file', ['foo_u', 'foo_r', 'foo_t', 's0'], False), True)
                self.assertEqual(m.called, False)
                am.check_mode = False

            with patch('selinux.lsetfilecon', return_value=1) as m:
                self.assertRaises(SystemExit, am.set_context_if_different, '/path/to/file', ['foo_u', 'foo_r', 'foo_t', 's0'], True)

            with patch('selinux.lsetfilecon', side_effect=OSError) as m:
                self.assertRaises(SystemExit, am.set_context_if_different, '/path/to/file', ['foo_u', 'foo_r', 'foo_t', 's0'], True)

            am.is_special_selinux_path = MagicMock(return_value=(True, ['sp_u', 'sp_r', 'sp_t', 's0']))

            with patch('selinux.lsetfilecon', return_value=0) as m:
                self.assertEqual(am.set_context_if_different('/path/to/file', ['foo_u', 'foo_r', 'foo_t', 's0'], False), True)
                m.assert_called_with('/path/to/file', 'sp_u:sp_r:sp_t:s0')

        delattr(basic, 'selinux')