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"""Tests for certbot.util.""" 

import argparse 

import errno 

import os 

import unittest 

 

import mock 

import six 

from six.moves import reload_module # pylint: disable=import-error 

 

from certbot import compat 

from certbot import errors 

import certbot.tests.util as test_util 

 

 

class RunScriptTest(unittest.TestCase): 

"""Tests for certbot.util.run_script.""" 

@classmethod 

def _call(cls, params): 

from certbot.util import run_script 

return run_script(params) 

 

@mock.patch("certbot.util.subprocess.Popen") 

def test_default(self, mock_popen): 

"""These will be changed soon enough with reload.""" 

mock_popen().returncode = 0 

mock_popen().communicate.return_value = ("stdout", "stderr") 

 

out, err = self._call(["test"]) 

self.assertEqual(out, "stdout") 

self.assertEqual(err, "stderr") 

 

@mock.patch("certbot.util.subprocess.Popen") 

def test_bad_process(self, mock_popen): 

mock_popen.side_effect = OSError 

 

self.assertRaises(errors.SubprocessError, self._call, ["test"]) 

 

@mock.patch("certbot.util.subprocess.Popen") 

def test_failure(self, mock_popen): 

mock_popen().communicate.return_value = ("", "") 

mock_popen().returncode = 1 

 

self.assertRaises(errors.SubprocessError, self._call, ["test"]) 

 

 

class ExeExistsTest(unittest.TestCase): 

"""Tests for certbot.util.exe_exists.""" 

 

@classmethod 

def _call(cls, exe): 

from certbot.util import exe_exists 

return exe_exists(exe) 

 

@mock.patch("certbot.util.os.path.isfile") 

@mock.patch("certbot.util.os.access") 

def test_full_path(self, mock_access, mock_isfile): 

mock_access.return_value = True 

mock_isfile.return_value = True 

self.assertTrue(self._call("/path/to/exe")) 

 

@mock.patch("certbot.util.os.path.isfile") 

@mock.patch("certbot.util.os.access") 

def test_on_path(self, mock_access, mock_isfile): 

mock_access.return_value = True 

mock_isfile.return_value = True 

self.assertTrue(self._call("exe")) 

 

@mock.patch("certbot.util.os.path.isfile") 

@mock.patch("certbot.util.os.access") 

def test_not_found(self, mock_access, mock_isfile): 

mock_access.return_value = False 

mock_isfile.return_value = True 

self.assertFalse(self._call("exe")) 

 

 

class LockDirUntilExit(test_util.TempDirTestCase): 

"""Tests for certbot.util.lock_dir_until_exit.""" 

@classmethod 

def _call(cls, *args, **kwargs): 

from certbot.util import lock_dir_until_exit 

return lock_dir_until_exit(*args, **kwargs) 

 

def setUp(self): 

super(LockDirUntilExit, self).setUp() 

# reset global state from other tests 

import certbot.util 

reload_module(certbot.util) 

 

@mock.patch('certbot.util.logger') 

@mock.patch('certbot.util.atexit_register') 

def test_it(self, mock_register, mock_logger): 

subdir = os.path.join(self.tempdir, 'subdir') 

os.mkdir(subdir) 

self._call(self.tempdir) 

self._call(subdir) 

self._call(subdir) 

 

self.assertEqual(mock_register.call_count, 1) 

registered_func = mock_register.call_args[0][0] 

 

from certbot import util 

# Despite lock_dir_until_exit has been called twice to subdir, its lock should have been 

# added only once. So we expect to have two lock references: for self.tempdir and subdir 

self.assertTrue(len(util._LOCKS) == 2) # pylint: disable=protected-access 

registered_func() # Exception should not be raised 

# Logically, logger.debug, that would be invoked in case of unlock failure, 

# should never been called. 

self.assertEqual(mock_logger.debug.call_count, 0) 

 

 

class SetUpCoreDirTest(test_util.TempDirTestCase): 

"""Tests for certbot.util.make_or_verify_core_dir.""" 

 

def _call(self, *args, **kwargs): 

from certbot.util import set_up_core_dir 

return set_up_core_dir(*args, **kwargs) 

 

@mock.patch('certbot.util.lock_dir_until_exit') 

def test_success(self, mock_lock): 

new_dir = os.path.join(self.tempdir, 'new') 

self._call(new_dir, 0o700, compat.os_geteuid(), False) 

self.assertTrue(os.path.exists(new_dir)) 

self.assertEqual(mock_lock.call_count, 1) 

 

@mock.patch('certbot.util.make_or_verify_dir') 

def test_failure(self, mock_make_or_verify): 

mock_make_or_verify.side_effect = OSError 

self.assertRaises(errors.Error, self._call, 

self.tempdir, 0o700, compat.os_geteuid(), False) 

 

 

class MakeOrVerifyDirTest(test_util.TempDirTestCase): 

"""Tests for certbot.util.make_or_verify_dir. 

 

Note that it is not possible to test for a wrong directory owner, 

as this testing script would have to be run as root. 

 

""" 

 

def setUp(self): 

super(MakeOrVerifyDirTest, self).setUp() 

 

self.path = os.path.join(self.tempdir, "foo") 

os.mkdir(self.path, 0o600) 

 

self.uid = compat.os_geteuid() 

 

def _call(self, directory, mode): 

from certbot.util import make_or_verify_dir 

return make_or_verify_dir(directory, mode, self.uid, strict=True) 

 

def test_creates_dir_when_missing(self): 

path = os.path.join(self.tempdir, "bar") 

self._call(path, 0o650) 

self.assertTrue(os.path.isdir(path)) 

self.assertTrue(compat.compare_file_modes(os.stat(path).st_mode, 0o650)) 

 

def test_existing_correct_mode_does_not_fail(self): 

self._call(self.path, 0o600) 

self.assertTrue(compat.compare_file_modes(os.stat(self.path).st_mode, 0o600)) 

 

@test_util.skip_on_windows('Umask modes are mostly ignored on Windows.') 

def test_existing_wrong_mode_fails(self): 

self.assertRaises(errors.Error, self._call, self.path, 0o400) 

 

def test_reraises_os_error(self): 

with mock.patch.object(os, "makedirs") as makedirs: 

makedirs.side_effect = OSError() 

self.assertRaises(OSError, self._call, "bar", 12312312) 

 

 

class CheckPermissionsTest(test_util.TempDirTestCase): 

"""Tests for certbot.util.check_permissions. 

 

Note that it is not possible to test for a wrong file owner, 

as this testing script would have to be run as root. 

 

""" 

 

def setUp(self): 

super(CheckPermissionsTest, self).setUp() 

 

self.uid = compat.os_geteuid() 

 

def _call(self, mode): 

from certbot.util import check_permissions 

return check_permissions(self.tempdir, mode, self.uid) 

 

def test_ok_mode(self): 

os.chmod(self.tempdir, 0o600) 

self.assertTrue(self._call(0o600)) 

 

def test_wrong_mode(self): 

os.chmod(self.tempdir, 0o400) 

self.assertFalse(self._call(0o600)) 

 

 

class UniqueFileTest(test_util.TempDirTestCase): 

"""Tests for certbot.util.unique_file.""" 

 

def setUp(self): 

super(UniqueFileTest, self).setUp() 

 

self.default_name = os.path.join(self.tempdir, "foo.txt") 

 

def _call(self, mode=0o600): 

from certbot.util import unique_file 

return unique_file(self.default_name, mode) 

 

def test_returns_fd_for_writing(self): 

fd, name = self._call() 

fd.write("bar") 

fd.close() 

with open(name) as f: 

self.assertEqual(f.read(), "bar") 

 

def test_right_mode(self): 

fd1, name1 = self._call(0o700) 

fd2, name2 = self._call(0o600) 

self.assertTrue(compat.compare_file_modes(0o700, os.stat(name1).st_mode)) 

self.assertTrue(compat.compare_file_modes(0o600, os.stat(name2).st_mode)) 

fd1.close() 

fd2.close() 

 

def test_default_exists(self): 

fd1, name1 = self._call() # create 0000_foo.txt 

fd2, name2 = self._call() 

fd3, name3 = self._call() 

 

self.assertNotEqual(name1, name2) 

self.assertNotEqual(name1, name3) 

self.assertNotEqual(name2, name3) 

 

self.assertEqual(os.path.dirname(name1), self.tempdir) 

self.assertEqual(os.path.dirname(name2), self.tempdir) 

self.assertEqual(os.path.dirname(name3), self.tempdir) 

 

basename1 = os.path.basename(name2) 

self.assertTrue(basename1.endswith("foo.txt")) 

basename2 = os.path.basename(name2) 

self.assertTrue(basename2.endswith("foo.txt")) 

basename3 = os.path.basename(name3) 

self.assertTrue(basename3.endswith("foo.txt")) 

 

fd1.close() 

fd2.close() 

fd3.close() 

 

 

try: 

file_type = file 

except NameError: 

import io 

file_type = io.TextIOWrapper # type: ignore 

 

 

class UniqueLineageNameTest(test_util.TempDirTestCase): 

"""Tests for certbot.util.unique_lineage_name.""" 

 

def _call(self, filename, mode=0o777): 

from certbot.util import unique_lineage_name 

return unique_lineage_name(self.tempdir, filename, mode) 

 

def test_basic(self): 

f, path = self._call("wow") 

self.assertTrue(isinstance(f, file_type)) 

self.assertEqual(os.path.join(self.tempdir, "wow.conf"), path) 

f.close() 

 

def test_multiple(self): 

items = [] 

for _ in six.moves.range(10): 

items.append(self._call("wow")) 

f, name = items[-1] 

self.assertTrue(isinstance(f, file_type)) 

self.assertTrue(isinstance(name, six.string_types)) 

self.assertTrue("wow-0009.conf" in name) 

for f, _ in items: 

f.close() 

 

@mock.patch("certbot.util.os.fdopen") 

def test_failure(self, mock_fdopen): 

err = OSError("whoops") 

err.errno = errno.EIO 

mock_fdopen.side_effect = err 

self.assertRaises(OSError, self._call, "wow") 

 

@mock.patch("certbot.util.os.fdopen") 

def test_subsequent_failure(self, mock_fdopen): 

self._call("wow") 

err = OSError("whoops") 

err.errno = errno.EIO 

mock_fdopen.side_effect = err 

self.assertRaises(OSError, self._call, "wow") 

 

 

class SafelyRemoveTest(test_util.TempDirTestCase): 

"""Tests for certbot.util.safely_remove.""" 

 

def setUp(self): 

super(SafelyRemoveTest, self).setUp() 

 

self.path = os.path.join(self.tempdir, "foo") 

 

def _call(self): 

from certbot.util import safely_remove 

return safely_remove(self.path) 

 

def test_exists(self): 

with open(self.path, "w"): 

pass # just create the file 

self._call() 

self.assertFalse(os.path.exists(self.path)) 

 

def test_missing(self): 

self._call() 

# no error, yay! 

self.assertFalse(os.path.exists(self.path)) 

 

@mock.patch("certbot.util.os.remove") 

def test_other_error_passthrough(self, mock_remove): 

mock_remove.side_effect = OSError 

self.assertRaises(OSError, self._call) 

 

 

class SafeEmailTest(unittest.TestCase): 

"""Test safe_email.""" 

@classmethod 

def _call(cls, addr): 

from certbot.util import safe_email 

return safe_email(addr) 

 

def test_valid_emails(self): 

addrs = [ 

"certbot@certbot.org", 

"tbd.ade@gmail.com", 

"abc_def.jdk@hotmail.museum", 

] 

for addr in addrs: 

self.assertTrue(self._call(addr), "%s failed." % addr) 

 

def test_invalid_emails(self): 

addrs = [ 

"certbot@certbot..org", 

".tbd.ade@gmail.com", 

"~/abc_def.jdk@hotmail.museum", 

] 

for addr in addrs: 

self.assertFalse(self._call(addr), "%s failed." % addr) 

 

 

class AddDeprecatedArgumentTest(unittest.TestCase): 

"""Test add_deprecated_argument.""" 

def setUp(self): 

self.parser = argparse.ArgumentParser() 

 

def _call(self, argument_name, nargs): 

from certbot.util import add_deprecated_argument 

 

add_deprecated_argument(self.parser.add_argument, argument_name, nargs) 

 

def test_warning_no_arg(self): 

self._call("--old-option", 0) 

stderr = self._get_argparse_warnings(["--old-option"]) 

self.assertTrue("--old-option is deprecated" in stderr) 

 

def test_warning_with_arg(self): 

self._call("--old-option", 1) 

stderr = self._get_argparse_warnings(["--old-option", "42"]) 

self.assertTrue("--old-option is deprecated" in stderr) 

 

def _get_argparse_warnings(self, args): 

stderr = six.StringIO() 

with mock.patch("certbot.util.sys.stderr", new=stderr): 

self.parser.parse_args(args) 

return stderr.getvalue() 

 

def test_help(self): 

self._call("--old-option", 2) 

stdout = six.StringIO() 

with mock.patch("certbot.util.sys.stdout", new=stdout): 

try: 

self.parser.parse_args(["-h"]) 

except SystemExit: 

pass 

self.assertTrue("--old-option" not in stdout.getvalue()) 

 

def test_set_constant(self): 

"""Test when ACTION_TYPES_THAT_DONT_NEED_A_VALUE is a set. 

 

This variable is a set in configargparse versions < 0.12.0. 

 

""" 

self._test_constant_common(set) 

 

def test_tuple_constant(self): 

"""Test when ACTION_TYPES_THAT_DONT_NEED_A_VALUE is a tuple. 

 

This variable is a tuple in configargparse versions >= 0.12.0. 

 

""" 

self._test_constant_common(tuple) 

 

def _test_constant_common(self, typ): 

with mock.patch("certbot.util.configargparse") as mock_configargparse: 

mock_configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE = typ() 

self._call("--old-option", 1) 

self._call("--old-option2", 2) 

self.assertEqual( 

len(mock_configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE), 1) 

 

 

class EnforceLeValidity(unittest.TestCase): 

"""Test enforce_le_validity.""" 

def _call(self, domain): 

from certbot.util import enforce_le_validity 

return enforce_le_validity(domain) 

 

def test_sanity(self): 

self.assertRaises(errors.ConfigurationError, self._call, u"..") 

 

def test_invalid_chars(self): 

self.assertRaises( 

errors.ConfigurationError, self._call, u"hello_world.example.com") 

 

def test_leading_hyphen(self): 

self.assertRaises( 

errors.ConfigurationError, self._call, u"-a.example.com") 

 

def test_trailing_hyphen(self): 

self.assertRaises( 

errors.ConfigurationError, self._call, u"a-.example.com") 

 

def test_one_label(self): 

self.assertRaises(errors.ConfigurationError, self._call, u"com") 

 

def test_valid_domain(self): 

self.assertEqual(self._call(u"example.com"), u"example.com") 

 

def test_input_with_scheme(self): 

self.assertRaises(errors.ConfigurationError, self._call, u"http://example.com") 

self.assertRaises(errors.ConfigurationError, self._call, u"https://example.com") 

 

def test_valid_input_with_scheme_name(self): 

self.assertEqual(self._call(u"http.example.com"), u"http.example.com") 

 

 

class EnforceDomainSanityTest(unittest.TestCase): 

"""Test enforce_domain_sanity.""" 

 

def _call(self, domain): 

from certbot.util import enforce_domain_sanity 

return enforce_domain_sanity(domain) 

 

def test_nonascii_str(self): 

self.assertRaises(errors.ConfigurationError, self._call, 

u"eichh\u00f6rnchen.example.com".encode("utf-8")) 

 

def test_nonascii_unicode(self): 

self.assertRaises(errors.ConfigurationError, self._call, 

u"eichh\u00f6rnchen.example.com") 

 

def test_too_long(self): 

long_domain = u"a"*256 

self.assertRaises(errors.ConfigurationError, self._call, 

long_domain) 

 

def test_not_too_long(self): 

not_too_long_domain = u"{0}.{1}.{2}.{3}".format("a"*63, "b"*63, "c"*63, "d"*63) 

self._call(not_too_long_domain) 

 

def test_empty_label(self): 

empty_label_domain = u"fizz..example.com" 

self.assertRaises(errors.ConfigurationError, self._call, 

empty_label_domain) 

 

def test_empty_trailing_label(self): 

empty_trailing_label_domain = u"example.com.." 

self.assertRaises(errors.ConfigurationError, self._call, 

empty_trailing_label_domain) 

 

def test_long_label_1(self): 

long_label_domain = u"a"*64 

self.assertRaises(errors.ConfigurationError, self._call, 

long_label_domain) 

 

def test_long_label_2(self): 

long_label_domain = u"{0}.{1}.com".format(u"a"*64, u"b"*63) 

self.assertRaises(errors.ConfigurationError, self._call, 

long_label_domain) 

 

def test_not_long_label(self): 

not_too_long_label_domain = u"{0}.{1}.com".format(u"a"*63, u"b"*63) 

self._call(not_too_long_label_domain) 

 

def test_empty_domain(self): 

empty_domain = u"" 

self.assertRaises(errors.ConfigurationError, self._call, 

empty_domain) 

 

def test_punycode_ok(self): 

# Punycode is now legal, so no longer an error; instead check 

# that it's _not_ an error (at the initial sanity check stage) 

self._call('this.is.xn--ls8h.tld') 

 

 

class IsWildcardDomainTest(unittest.TestCase): 

"""Tests for is_wildcard_domain.""" 

 

def setUp(self): 

self.wildcard = u"*.example.org" 

self.no_wildcard = u"example.org" 

 

def _call(self, domain): 

from certbot.util import is_wildcard_domain 

return is_wildcard_domain(domain) 

 

def test_no_wildcard(self): 

self.assertFalse(self._call(self.no_wildcard)) 

self.assertFalse(self._call(self.no_wildcard.encode())) 

 

def test_wildcard(self): 

self.assertTrue(self._call(self.wildcard)) 

self.assertTrue(self._call(self.wildcard.encode())) 

 

 

class OsInfoTest(unittest.TestCase): 

"""Test OS / distribution detection""" 

 

def test_systemd_os_release(self): 

from certbot.util import (get_os_info, get_systemd_os_info, 

get_os_info_ua) 

 

with mock.patch('os.path.isfile', return_value=True): 

self.assertEqual(get_os_info( 

test_util.vector_path("os-release"))[0], 'systemdos') 

self.assertEqual(get_os_info( 

test_util.vector_path("os-release"))[1], '42') 

self.assertEqual(get_systemd_os_info(os.devnull), ("", "")) 

self.assertEqual(get_os_info_ua( 

test_util.vector_path("os-release")), "SystemdOS") 

with mock.patch('os.path.isfile', return_value=False): 

self.assertEqual(get_systemd_os_info(), ("", "")) 

 

def test_systemd_os_release_like(self): 

from certbot.util import get_systemd_os_like 

 

with mock.patch('os.path.isfile', return_value=True): 

id_likes = get_systemd_os_like(test_util.vector_path( 

"os-release")) 

self.assertEqual(len(id_likes), 3) 

self.assertTrue("debian" in id_likes) 

 

@mock.patch("certbot.util.subprocess.Popen") 

def test_non_systemd_os_info(self, popen_mock): 

from certbot.util import (get_os_info, get_python_os_info, 

get_os_info_ua) 

with mock.patch('os.path.isfile', return_value=False): 

with mock.patch('platform.system_alias', 

return_value=('NonSystemD', '42', '42')): 

self.assertEqual(get_os_info()[0], 'nonsystemd') 

self.assertEqual(get_os_info_ua(), 

" ".join(get_python_os_info())) 

 

with mock.patch('platform.system_alias', 

return_value=('darwin', '', '')): 

comm_mock = mock.Mock() 

comm_attrs = {'communicate.return_value': 

('42.42.42', 'error')} 

comm_mock.configure_mock(**comm_attrs) # pylint: disable=star-args 

popen_mock.return_value = comm_mock 

self.assertEqual(get_os_info()[0], 'darwin') 

self.assertEqual(get_os_info()[1], '42.42.42') 

 

with mock.patch('platform.system_alias', 

return_value=('linux', '', '')): 

with mock.patch('platform.linux_distribution', 

return_value=('', '', '')): 

self.assertEqual(get_python_os_info(), ("linux", "")) 

 

with mock.patch('platform.linux_distribution', 

return_value=('testdist', '42', '')): 

self.assertEqual(get_python_os_info(), ("testdist", "42")) 

 

with mock.patch('platform.system_alias', 

return_value=('freebsd', '9.3-RC3-p1', '')): 

self.assertEqual(get_python_os_info(), ("freebsd", "9")) 

 

with mock.patch('platform.system_alias', 

return_value=('windows', '', '')): 

with mock.patch('platform.win32_ver', 

return_value=('4242', '95', '2', '')): 

self.assertEqual(get_python_os_info(), 

("windows", "95")) 

 

 

class AtexitRegisterTest(unittest.TestCase): 

"""Tests for certbot.util.atexit_register.""" 

def setUp(self): 

self.func = mock.MagicMock() 

self.args = ('hi',) 

self.kwargs = {'answer': 42} 

 

@classmethod 

def _call(cls, *args, **kwargs): 

from certbot.util import atexit_register 

return atexit_register(*args, **kwargs) 

 

def test_called(self): 

self._test_common(os.getpid()) 

self.func.assert_called_with(*self.args, **self.kwargs) 

 

def test_not_called(self): 

self._test_common(initial_pid=-1) 

self.assertFalse(self.func.called) 

 

def _test_common(self, initial_pid): 

with mock.patch('certbot.util._INITIAL_PID', initial_pid): 

with mock.patch('certbot.util.atexit') as mock_atexit: 

self._call(self.func, *self.args, **self.kwargs) 

 

# _INITAL_PID must be mocked when calling atexit_func 

self.assertTrue(mock_atexit.register.called) 

args, kwargs = mock_atexit.register.call_args 

atexit_func = args[0] 

atexit_func(*args[1:], **kwargs) # pylint: disable=star-args 

 

 

if __name__ == "__main__": 

unittest.main() # pragma: no cover