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ansible/test/units/plugins/lookup/test_password.py
Abhijeet Kasurde 1bd7dcf339
encrypt: add new paramter 'ident' (#74595) 
Add a new parameter `ident` for specifying version of BCrypt
algorithm. This parameter is only valid for `blowfish` hash type.
2021-05-24 11:46:37 -04:00

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# -*- coding: utf-8 -*-
# (c) 2015, Toshio Kuratomi <tkuratomi@ansible.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
try:
import passlib
from passlib.handlers import pbkdf2
except ImportError:
passlib = None
pbkdf2 = None
import pytest
from units.mock.loader import DictDataLoader
from units.compat import unittest
from units.compat.mock import mock_open, patch
from ansible.errors import AnsibleError
from ansible.module_utils.six import text_type
from ansible.module_utils.six.moves import builtins
from ansible.module_utils._text import to_bytes
from ansible.plugins.loader import PluginLoader
from ansible.plugins.lookup import password
DEFAULT_CHARS = sorted([u'ascii_letters', u'digits', u".,:-_"])
DEFAULT_CANDIDATE_CHARS = u'.,:-_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
# Currently there isn't a new-style
old_style_params_data = (
# Simple case
dict(
term=u'/path/to/file',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=DEFAULT_CHARS),
candidate_chars=DEFAULT_CANDIDATE_CHARS,
),
# Special characters in path
dict(
term=u'/path/with/embedded spaces and/file',
filename=u'/path/with/embedded spaces and/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=DEFAULT_CHARS),
candidate_chars=DEFAULT_CANDIDATE_CHARS,
),
dict(
term=u'/path/with/equals/cn=com.ansible',
filename=u'/path/with/equals/cn=com.ansible',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=DEFAULT_CHARS),
candidate_chars=DEFAULT_CANDIDATE_CHARS,
),
dict(
term=u'/path/with/unicode/くらとみ/file',
filename=u'/path/with/unicode/くらとみ/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=DEFAULT_CHARS),
candidate_chars=DEFAULT_CANDIDATE_CHARS,
),
# Mix several special chars
dict(
term=u'/path/with/utf 8 and spaces/くらとみ/file',
filename=u'/path/with/utf 8 and spaces/くらとみ/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=DEFAULT_CHARS),
candidate_chars=DEFAULT_CANDIDATE_CHARS,
),
dict(
term=u'/path/with/encoding=unicode/くらとみ/file',
filename=u'/path/with/encoding=unicode/くらとみ/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=DEFAULT_CHARS),
candidate_chars=DEFAULT_CANDIDATE_CHARS,
),
dict(
term=u'/path/with/encoding=unicode/くらとみ/and spaces file',
filename=u'/path/with/encoding=unicode/くらとみ/and spaces file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=DEFAULT_CHARS),
candidate_chars=DEFAULT_CANDIDATE_CHARS,
),
# Simple parameters
dict(
term=u'/path/to/file length=42',
filename=u'/path/to/file',
params=dict(length=42, encrypt=None, ident=None, chars=DEFAULT_CHARS),
candidate_chars=DEFAULT_CANDIDATE_CHARS,
),
dict(
term=u'/path/to/file encrypt=pbkdf2_sha256',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt='pbkdf2_sha256', ident=None, chars=DEFAULT_CHARS),
candidate_chars=DEFAULT_CANDIDATE_CHARS,
),
dict(
term=u'/path/to/file chars=abcdefghijklmnop',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=[u'abcdefghijklmnop']),
candidate_chars=u'abcdefghijklmnop',
),
dict(
term=u'/path/to/file chars=digits,abc,def',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=sorted([u'digits', u'abc', u'def'])),
candidate_chars=u'abcdef0123456789',
),
# Including comma in chars
dict(
term=u'/path/to/file chars=abcdefghijklmnop,,digits',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=sorted([u'abcdefghijklmnop', u',', u'digits'])),
candidate_chars=u',abcdefghijklmnop0123456789',
),
dict(
term=u'/path/to/file chars=,,',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=[u',']),
candidate_chars=u',',
),
# Including = in chars
dict(
term=u'/path/to/file chars=digits,=,,',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=sorted([u'digits', u'=', u','])),
candidate_chars=u',=0123456789',
),
dict(
term=u'/path/to/file chars=digits,abc=def',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=sorted([u'digits', u'abc=def'])),
candidate_chars=u'abc=def0123456789',
),
# Including unicode in chars
dict(
term=u'/path/to/file chars=digits,くらとみ,,',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=sorted([u'digits', u'くらとみ', u','])),
candidate_chars=u',0123456789くらとみ',
),
# Including only unicode in chars
dict(
term=u'/path/to/file chars=くらとみ',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=sorted([u'くらとみ'])),
candidate_chars=u'くらとみ',
),
# Include ':' in path
dict(
term=u'/path/to/file_with:colon chars=ascii_letters,digits',
filename=u'/path/to/file_with:colon',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=sorted([u'ascii_letters', u'digits'])),
candidate_chars=u'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789',
),
# Including special chars in both path and chars
# Special characters in path
dict(
term=u'/path/with/embedded spaces and/file chars=abc=def',
filename=u'/path/with/embedded spaces and/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=[u'abc=def']),
candidate_chars=u'abc=def',
),
dict(
term=u'/path/with/equals/cn=com.ansible chars=abc=def',
filename=u'/path/with/equals/cn=com.ansible',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=[u'abc=def']),
candidate_chars=u'abc=def',
),
dict(
term=u'/path/with/unicode/くらとみ/file chars=くらとみ',
filename=u'/path/with/unicode/くらとみ/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, ident=None, chars=[u'くらとみ']),
candidate_chars=u'くらとみ',
),
)
class TestParseParameters(unittest.TestCase):
def test(self):
for testcase in old_style_params_data:
filename, params = password._parse_parameters(testcase['term'])
params['chars'].sort()
self.assertEqual(filename, testcase['filename'])
self.assertEqual(params, testcase['params'])
def test_unrecognized_value(self):
testcase = dict(term=u'/path/to/file chars=くらとみi sdfsdf',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, chars=[u'くらとみ']),
candidate_chars=u'くらとみ')
self.assertRaises(AnsibleError, password._parse_parameters, testcase['term'])
def test_invalid_params(self):
testcase = dict(term=u'/path/to/file chars=くらとみi somethign_invalid=123',
filename=u'/path/to/file',
params=dict(length=password.DEFAULT_LENGTH, encrypt=None, chars=[u'くらとみ']),
candidate_chars=u'くらとみ')
self.assertRaises(AnsibleError, password._parse_parameters, testcase['term'])
class TestReadPasswordFile(unittest.TestCase):
def setUp(self):
self.os_path_exists = password.os.path.exists
def tearDown(self):
password.os.path.exists = self.os_path_exists
def test_no_password_file(self):
password.os.path.exists = lambda x: False
self.assertEqual(password._read_password_file(b'/nonexistent'), None)
def test_with_password_file(self):
password.os.path.exists = lambda x: True
with patch.object(builtins, 'open', mock_open(read_data=b'Testing\n')) as m:
self.assertEqual(password._read_password_file(b'/etc/motd'), u'Testing')
class TestGenCandidateChars(unittest.TestCase):
def _assert_gen_candidate_chars(self, testcase):
expected_candidate_chars = testcase['candidate_chars']
params = testcase['params']
chars_spec = params['chars']
res = password._gen_candidate_chars(chars_spec)
self.assertEqual(res, expected_candidate_chars)
def test_gen_candidate_chars(self):
for testcase in old_style_params_data:
self._assert_gen_candidate_chars(testcase)
class TestRandomPassword(unittest.TestCase):
def _assert_valid_chars(self, res, chars):
for res_char in res:
self.assertIn(res_char, chars)
def test_default(self):
res = password.random_password()
self.assertEqual(len(res), password.DEFAULT_LENGTH)
self.assertTrue(isinstance(res, text_type))
self._assert_valid_chars(res, DEFAULT_CANDIDATE_CHARS)
def test_zero_length(self):
res = password.random_password(length=0)
self.assertEqual(len(res), 0)
self.assertTrue(isinstance(res, text_type))
self._assert_valid_chars(res, u',')
def test_just_a_common(self):
res = password.random_password(length=1, chars=u',')
self.assertEqual(len(res), 1)
self.assertEqual(res, u',')
def test_free_will(self):
# A Rush and Spinal Tap reference twofer
res = password.random_password(length=11, chars=u'a')
self.assertEqual(len(res), 11)
self.assertEqual(res, 'aaaaaaaaaaa')
self._assert_valid_chars(res, u'a')
def test_unicode(self):
res = password.random_password(length=11, chars=u'くらとみ')
self._assert_valid_chars(res, u'くらとみ')
self.assertEqual(len(res), 11)
def test_gen_password(self):
for testcase in old_style_params_data:
params = testcase['params']
candidate_chars = testcase['candidate_chars']
params_chars_spec = password._gen_candidate_chars(params['chars'])
password_string = password.random_password(length=params['length'],
chars=params_chars_spec)
self.assertEqual(len(password_string),
params['length'],
msg='generated password=%s has length (%s) instead of expected length (%s)' %
(password_string, len(password_string), params['length']))
for char in password_string:
self.assertIn(char, candidate_chars,
msg='%s not found in %s from chars spect %s' %
(char, candidate_chars, params['chars']))
class TestParseContent(unittest.TestCase):
def test_empty_password_file(self):
plaintext_password, salt = password._parse_content(u'')
self.assertEqual(plaintext_password, u'')
self.assertEqual(salt, None)
def test(self):
expected_content = u'12345678'
file_content = expected_content
plaintext_password, salt = password._parse_content(file_content)
self.assertEqual(plaintext_password, expected_content)
self.assertEqual(salt, None)
def test_with_salt(self):
expected_content = u'12345678 salt=87654321'
file_content = expected_content
plaintext_password, salt = password._parse_content(file_content)
self.assertEqual(plaintext_password, u'12345678')
self.assertEqual(salt, u'87654321')
class TestFormatContent(unittest.TestCase):
def test_no_encrypt(self):
self.assertEqual(
password._format_content(password=u'hunter42',
salt=u'87654321',
encrypt=False),
u'hunter42 salt=87654321')
def test_no_encrypt_no_salt(self):
self.assertEqual(
password._format_content(password=u'hunter42',
salt=None,
encrypt=None),
u'hunter42')
def test_encrypt(self):
self.assertEqual(
password._format_content(password=u'hunter42',
salt=u'87654321',
encrypt='pbkdf2_sha256'),
u'hunter42 salt=87654321')
def test_encrypt_no_salt(self):
self.assertRaises(AssertionError, password._format_content, u'hunter42', None, 'pbkdf2_sha256')
class TestWritePasswordFile(unittest.TestCase):
def setUp(self):
self.makedirs_safe = password.makedirs_safe
self.os_chmod = password.os.chmod
password.makedirs_safe = lambda path, mode: None
password.os.chmod = lambda path, mode: None
def tearDown(self):
password.makedirs_safe = self.makedirs_safe
password.os.chmod = self.os_chmod
def test_content_written(self):
with patch.object(builtins, 'open', mock_open()) as m:
password._write_password_file(b'/this/is/a/test/caf\xc3\xa9', u'Testing Café')
m.assert_called_once_with(b'/this/is/a/test/caf\xc3\xa9', 'wb')
m().write.assert_called_once_with(u'Testing Café\n'.encode('utf-8'))
class BaseTestLookupModule(unittest.TestCase):
def setUp(self):
self.fake_loader = DictDataLoader({'/path/to/somewhere': 'sdfsdf'})
self.password_lookup = password.LookupModule(loader=self.fake_loader)
self.os_path_exists = password.os.path.exists
self.os_open = password.os.open
password.os.open = lambda path, flag: None
self.os_close = password.os.close
password.os.close = lambda fd: None
self.os_remove = password.os.remove
password.os.remove = lambda path: None
self.makedirs_safe = password.makedirs_safe
password.makedirs_safe = lambda path, mode: None
def tearDown(self):
password.os.path.exists = self.os_path_exists
password.os.open = self.os_open
password.os.close = self.os_close
password.os.remove = self.os_remove
password.makedirs_safe = self.makedirs_safe
class TestLookupModuleWithoutPasslib(BaseTestLookupModule):
@patch.object(PluginLoader, '_get_paths')
@patch('ansible.plugins.lookup.password._write_password_file')
def test_no_encrypt(self, mock_get_paths, mock_write_file):
mock_get_paths.return_value = ['/path/one', '/path/two', '/path/three']
results = self.password_lookup.run([u'/path/to/somewhere'], None)
# FIXME: assert something useful
for result in results:
assert len(result) == password.DEFAULT_LENGTH
assert isinstance(result, text_type)
@patch.object(PluginLoader, '_get_paths')
@patch('ansible.plugins.lookup.password._write_password_file')
def test_password_already_created_no_encrypt(self, mock_get_paths, mock_write_file):
mock_get_paths.return_value = ['/path/one', '/path/two', '/path/three']
password.os.path.exists = lambda x: x == to_bytes('/path/to/somewhere')
with patch.object(builtins, 'open', mock_open(read_data=b'hunter42 salt=87654321\n')) as m:
results = self.password_lookup.run([u'/path/to/somewhere chars=anything'], None)
for result in results:
self.assertEqual(result, u'hunter42')
@patch.object(PluginLoader, '_get_paths')
@patch('ansible.plugins.lookup.password._write_password_file')
def test_only_a(self, mock_get_paths, mock_write_file):
mock_get_paths.return_value = ['/path/one', '/path/two', '/path/three']
results = self.password_lookup.run([u'/path/to/somewhere chars=a'], None)
for result in results:
self.assertEqual(result, u'a' * password.DEFAULT_LENGTH)
@patch('time.sleep')
def test_lock_been_held(self, mock_sleep):
# pretend the lock file is here
password.os.path.exists = lambda x: True
try:
with patch.object(builtins, 'open', mock_open(read_data=b'hunter42 salt=87654321\n')) as m:
# should timeout here
results = self.password_lookup.run([u'/path/to/somewhere chars=anything'], None)
self.fail("Lookup didn't timeout when lock already been held")
except AnsibleError:
pass
def test_lock_not_been_held(self):
# pretend now there is password file but no lock
password.os.path.exists = lambda x: x == to_bytes('/path/to/somewhere')
try:
with patch.object(builtins, 'open', mock_open(read_data=b'hunter42 salt=87654321\n')) as m:
# should not timeout here
results = self.password_lookup.run([u'/path/to/somewhere chars=anything'], None)
except AnsibleError:
self.fail('Lookup timeouts when lock is free')
for result in results:
self.assertEqual(result, u'hunter42')
@pytest.mark.skipif(passlib is None, reason='passlib must be installed to run these tests')
class TestLookupModuleWithPasslib(BaseTestLookupModule):
def setUp(self):
super(TestLookupModuleWithPasslib, self).setUp()
# Different releases of passlib default to a different number of rounds
self.sha256 = passlib.registry.get_crypt_handler('pbkdf2_sha256')
sha256_for_tests = pbkdf2.create_pbkdf2_hash("sha256", 32, 20000)
passlib.registry.register_crypt_handler(sha256_for_tests, force=True)
def tearDown(self):
super(TestLookupModuleWithPasslib, self).tearDown()
passlib.registry.register_crypt_handler(self.sha256, force=True)
@patch.object(PluginLoader, '_get_paths')
@patch('ansible.plugins.lookup.password._write_password_file')
def test_encrypt(self, mock_get_paths, mock_write_file):
mock_get_paths.return_value = ['/path/one', '/path/two', '/path/three']
results = self.password_lookup.run([u'/path/to/somewhere encrypt=pbkdf2_sha256'], None)
# pbkdf2 format plus hash
expected_password_length = 76
for result in results:
self.assertEqual(len(result), expected_password_length)
# result should have 5 parts split by '$'
str_parts = result.split('$', 5)
# verify the result is parseable by the passlib
crypt_parts = passlib.hash.pbkdf2_sha256.parsehash(result)
# verify it used the right algo type
self.assertEqual(str_parts[1], 'pbkdf2-sha256')
self.assertEqual(len(str_parts), 5)
# verify the string and parsehash agree on the number of rounds
self.assertEqual(int(str_parts[2]), crypt_parts['rounds'])
self.assertIsInstance(result, text_type)
@patch.object(PluginLoader, '_get_paths')
@patch('ansible.plugins.lookup.password._write_password_file')
def test_password_already_created_encrypt(self, mock_get_paths, mock_write_file):
mock_get_paths.return_value = ['/path/one', '/path/two', '/path/three']
password.os.path.exists = lambda x: x == to_bytes('/path/to/somewhere')
with patch.object(builtins, 'open', mock_open(read_data=b'hunter42 salt=87654321\n')) as m:
results = self.password_lookup.run([u'/path/to/somewhere chars=anything encrypt=pbkdf2_sha256'], None)
for result in results:
self.assertEqual(result, u'$pbkdf2-sha256$20000$ODc2NTQzMjE$Uikde0cv0BKaRaAXMrUQB.zvG4GmnjClwjghwIRf2gU')
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