Filename: //lib//python3/dist-packages/certbot/tests/util.py

"""Test utilities.""" import logging from multiprocessing import Event from multiprocessing import Process import shutil import sys import tempfile import unittest from cryptography.hazmat.backends import default_backend from cryptography.hazmat.primitives import serialization import josepy as jose try: import mock except ImportError: # pragma: no cover from unittest import mock # type: ignore import OpenSSL import pkg_resources import six from six.moves import reload_module from certbot import interfaces from certbot import util from certbot._internal import configuration from certbot._internal import constants from certbot._internal import lock from certbot._internal import storage from certbot.compat import filesystem from certbot.compat import os from certbot.display import util as display_util def vector_path(*names): """Path to a test vector.""" return pkg_resources.resource_filename( __name__, os.path.join('testdata', *names)) def load_vector(*names): """Load contents of a test vector.""" # luckily, resource_string opens file in binary mode data = pkg_resources.resource_string( __name__, os.path.join('testdata', *names)) # Try at most to convert CRLF to LF when data is text try: return data.decode().replace('\r\n', '\n').encode() except ValueError: # Failed to process the file with standard encoding. # Most likely not a text file, return its bytes untouched. return data def _guess_loader(filename, loader_pem, loader_der): _, ext = os.path.splitext(filename) if ext.lower() == '.pem': return loader_pem elif ext.lower() == '.der': return loader_der raise ValueError("Loader could not be recognized based on extension") # pragma: no cover def load_cert(*names): """Load certificate.""" loader = _guess_loader( names[-1], OpenSSL.crypto.FILETYPE_PEM, OpenSSL.crypto.FILETYPE_ASN1) return OpenSSL.crypto.load_certificate(loader, load_vector(*names)) def load_csr(*names): """Load certificate request.""" loader = _guess_loader( names[-1], OpenSSL.crypto.FILETYPE_PEM, OpenSSL.crypto.FILETYPE_ASN1) return OpenSSL.crypto.load_certificate_request(loader, load_vector(*names)) def load_comparable_csr(*names): """Load ComparableX509 certificate request.""" return jose.ComparableX509(load_csr(*names)) def load_rsa_private_key(*names): """Load RSA private key.""" loader = _guess_loader(names[-1], serialization.load_pem_private_key, serialization.load_der_private_key) return jose.ComparableRSAKey(loader( load_vector(*names), password=None, backend=default_backend())) def load_pyopenssl_private_key(*names): """Load pyOpenSSL private key.""" loader = _guess_loader( names[-1], OpenSSL.crypto.FILETYPE_PEM, OpenSSL.crypto.FILETYPE_ASN1) return OpenSSL.crypto.load_privatekey(loader, load_vector(*names)) def make_lineage(config_dir, testfile, ec=False): """Creates a lineage defined by testfile. This creates the archive, live, and renewal directories if necessary and creates a simple lineage. :param str config_dir: path to the configuration directory :param str testfile: configuration file to base the lineage on :returns: path to the renewal conf file for the created lineage :rtype: str """ lineage_name = testfile[:-len('.conf')] conf_dir = os.path.join( config_dir, constants.RENEWAL_CONFIGS_DIR) archive_dir = os.path.join( config_dir, constants.ARCHIVE_DIR, lineage_name) live_dir = os.path.join( config_dir, constants.LIVE_DIR, lineage_name) for directory in (archive_dir, conf_dir, live_dir,): if not os.path.exists(directory): filesystem.makedirs(directory) sample_archive = vector_path('sample-archive{}'.format('-ec' if ec else '')) for kind in os.listdir(sample_archive): shutil.copyfile(os.path.join(sample_archive, kind), os.path.join(archive_dir, kind)) for kind in storage.ALL_FOUR: os.symlink(os.path.join(archive_dir, '{0}1.pem'.format(kind)), os.path.join(live_dir, '{0}.pem'.format(kind))) conf_path = os.path.join(config_dir, conf_dir, testfile) with open(vector_path(testfile)) as src: with open(conf_path, 'w') as dst: dst.writelines( line.replace('MAGICDIR', config_dir) for line in src) return conf_path def patch_get_utility(target='zope.component.getUtility'): """Patch zope.component.getUtility to use a special mock IDisplay. The mock IDisplay works like a regular mock object, except it also also asserts that methods are called with valid arguments. :param str target: path to patch :returns: mock zope.component.getUtility :rtype: mock.MagicMock """ return mock.patch(target, new_callable=_create_get_utility_mock) def patch_get_utility_with_stdout(target='zope.component.getUtility', stdout=None): """Patch zope.component.getUtility to use a special mock IDisplay. The mock IDisplay works like a regular mock object, except it also also asserts that methods are called with valid arguments. The `message` argument passed to the IDisplay methods is passed to stdout's write method. :param str target: path to patch :param object stdout: object to write standard output to; it is expected to have a `write` method :returns: mock zope.component.getUtility :rtype: mock.MagicMock """ stdout = stdout if stdout else six.StringIO() freezable_mock = _create_get_utility_mock_with_stdout(stdout) return mock.patch(target, new=freezable_mock) class FreezableMock(object): """Mock object with the ability to freeze attributes. This class works like a regular mock.MagicMock object, except attributes and behavior set before the object is frozen cannot be changed during tests. If a func argument is provided to the constructor, this function is called first when an instance of FreezableMock is called, followed by the usual behavior defined by MagicMock. The return value of func is ignored. """ def __init__(self, frozen=False, func=None, return_value=mock.sentinel.DEFAULT): self._frozen_set = set() if frozen else {'freeze', } self._func = func self._mock = mock.MagicMock() if return_value != mock.sentinel.DEFAULT: self.return_value = return_value self._frozen = frozen def freeze(self): """Freeze object preventing further changes.""" self._frozen = True def __call__(self, *args, **kwargs): if self._func is not None: self._func(*args, **kwargs) return self._mock(*args, **kwargs) def __getattribute__(self, name): if name == '_frozen': try: return object.__getattribute__(self, name) except AttributeError: return False elif name in ('return_value', 'side_effect',): return getattr(object.__getattribute__(self, '_mock'), name) elif name == '_frozen_set' or name in self._frozen_set: return object.__getattribute__(self, name) else: return getattr(object.__getattribute__(self, '_mock'), name) def __setattr__(self, name, value): """ Before it is frozen, attributes are set on the FreezableMock instance and added to the _frozen_set. Attributes in the _frozen_set cannot be changed after the FreezableMock is frozen. In this case, they are set on the underlying _mock. In cases of return_value and side_effect, these attributes are always passed through to the instance's _mock and added to the _frozen_set before the object is frozen. """ if self._frozen: if name in self._frozen_set: raise AttributeError('Cannot change frozen attribute ' + name) return setattr(self._mock, name, value) if name != '_frozen_set': self._frozen_set.add(name) if name in ('return_value', 'side_effect'): return setattr(self._mock, name, value) return object.__setattr__(self, name, value) def _create_get_utility_mock(): display = FreezableMock() # Use pylint code for disable to keep on single line under line length limit for name in interfaces.IDisplay.names(): # pylint: E1120 if name != 'notification': frozen_mock = FreezableMock(frozen=True, func=_assert_valid_call) setattr(display, name, frozen_mock) display.freeze() return FreezableMock(frozen=True, return_value=display) def _create_get_utility_mock_with_stdout(stdout): def _write_msg(message, *unused_args, **unused_kwargs): """Write to message to stdout. """ if message: stdout.write(message) def mock_method(*args, **kwargs): """ Mock function for IDisplay methods. """ _assert_valid_call(args, kwargs) _write_msg(*args, **kwargs) display = FreezableMock() # Use pylint code for disable to keep on single line under line length limit for name in interfaces.IDisplay.names(): # pylint: E1120 if name == 'notification': frozen_mock = FreezableMock(frozen=True, func=_write_msg) setattr(display, name, frozen_mock) else: frozen_mock = FreezableMock(frozen=True, func=mock_method) setattr(display, name, frozen_mock) display.freeze() return FreezableMock(frozen=True, return_value=display) def _assert_valid_call(*args, **kwargs): assert_args = [args[0] if args else kwargs['message']] assert_kwargs = {} assert_kwargs['default'] = kwargs.get('default', None) assert_kwargs['cli_flag'] = kwargs.get('cli_flag', None) assert_kwargs['force_interactive'] = kwargs.get('force_interactive', False) display_util.assert_valid_call(*assert_args, **assert_kwargs) class TempDirTestCase(unittest.TestCase): """Base test class which sets up and tears down a temporary directory""" def setUp(self): """Execute before test""" self.tempdir = tempfile.mkdtemp() def tearDown(self): """Execute after test""" # Cleanup opened resources after a test. This is usually done through atexit handlers in # Certbot, but during tests, atexit will not run registered functions before tearDown is # called and instead will run them right before the entire test process exits. # It is a problem on Windows, that does not accept to clean resources before closing them. logging.shutdown() # Remove logging handlers that have been closed so they won't be # accidentally used in future tests. logging.getLogger().handlers = [] util._release_locks() # pylint: disable=protected-access shutil.rmtree(self.tempdir) class ConfigTestCase(TempDirTestCase): """Test class which sets up a NamespaceConfig object.""" def setUp(self): super(ConfigTestCase, self).setUp() self.config = configuration.NamespaceConfig( mock.MagicMock(**constants.CLI_DEFAULTS) ) self.config.verb = "certonly" self.config.config_dir = os.path.join(self.tempdir, 'config') self.config.work_dir = os.path.join(self.tempdir, 'work') self.config.logs_dir = os.path.join(self.tempdir, 'logs') self.config.cert_path = constants.CLI_DEFAULTS['auth_cert_path'] self.config.fullchain_path = constants.CLI_DEFAULTS['auth_chain_path'] self.config.chain_path = constants.CLI_DEFAULTS['auth_chain_path'] self.config.server = "https://example.com" def _handle_lock(event_in, event_out, path): """ Acquire a file lock on given path, then wait to release it. This worker is coordinated using events to signal when the lock should be acquired and released. :param multiprocessing.Event event_in: event object to signal when to release the lock :param multiprocessing.Event event_out: event object to signal when the lock is acquired :param path: the path to lock """ if os.path.isdir(path): my_lock = lock.lock_dir(path) else: my_lock = lock.LockFile(path) try: event_out.set() assert event_in.wait(timeout=20), 'Timeout while waiting to release the lock.' finally: my_lock.release() def lock_and_call(callback, path_to_lock): """ Grab a lock on path_to_lock from a foreign process then execute the callback. :param callable callback: object to call after acquiring the lock :param str path_to_lock: path to file or directory to lock """ # Reload certbot.util module to reset internal _LOCKS dictionary. reload_module(util) emit_event = Event() receive_event = Event() process = Process(target=_handle_lock, args=(emit_event, receive_event, path_to_lock)) process.start() # Wait confirmation that lock is acquired assert receive_event.wait(timeout=10), 'Timeout while waiting to acquire the lock.' # Execute the callback callback() # Trigger unlock from foreign process emit_event.set() # Wait for process termination process.join(timeout=10) assert process.exitcode == 0 def skip_on_windows(reason): """Decorator to skip permanently a test on Windows. A reason is required.""" def wrapper(function): """Wrapped version""" return unittest.skipIf(sys.platform == 'win32', reason)(function) return wrapper def temp_join(path): """ Return the given path joined to the tempdir path for the current platform Eg.: 'cert' => /tmp/cert (Linux) or 'C:\\Users\\currentuser\\AppData\\Temp\\cert' (Windows) """ return os.path.join(tempfile.gettempdir(), path)

./Ninja\.