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bpo-29778: Ensure python3.dll is loaded from correct locations when Python is embedded (GH-21297)

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Also enables using debug build of `python3_d.dll`
Reference: CVE-2020-15523
This commit is contained in:
Steve Dower 2020-07-06 17:32:00 +01:00 • committed by GitHub
parent deb016224c
commit dcbaa1b49c
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GPG key ID: 4AEE18F83AFDEB23
8 changed files with 150 additions and 137 deletions
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31
Lib/test/test_embed.py
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@ -32,7 +32,7 @@ API_ISOLATED = 3
def debug_build(program):
program = os.path.basename(program)
name = os.path.splitext(program)[0]
return name.endswith("_d")
return name.casefold().endswith("_d".casefold())
def remove_python_envvars():
@ -568,7 +568,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
if expected['stdio_errors'] is self.GET_DEFAULT_CONFIG:
expected['stdio_errors'] = 'surrogateescape'
if sys.platform == 'win32':
if MS_WINDOWS:
default_executable = self.test_exe
elif expected['program_name'] is not self.GET_DEFAULT_CONFIG:
default_executable = os.path.abspath(expected['program_name'])
@ -603,7 +603,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
pre_config = dict(configs['pre_config'])
for key, value in list(expected.items()):
if value is self.IGNORE_CONFIG:
del pre_config[key]
pre_config.pop(key, None)
del expected[key]
self.assertEqual(pre_config, expected)
@ -611,7 +611,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
config = dict(configs['config'])
for key, value in list(expected.items()):
if value is self.IGNORE_CONFIG:
del config[key]
config.pop(key, None)
del expected[key]
self.assertEqual(config, expected)
@ -686,6 +686,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
self.check_pre_config(configs, expected_preconfig)
self.check_config(configs, expected_config)
self.check_global_config(configs)
return configs
def test_init_default_config(self):
self.check_all_configs("test_init_initialize_config", api=API_COMPAT)
@ -1064,6 +1065,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
}
self.default_program_name(config)
env = {'TESTPATH': os.path.pathsep.join(paths)}
self.check_all_configs("test_init_setpath", config,
api=API_COMPAT, env=env,
ignore_stderr=True)
@ -1121,12 +1123,18 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
# Copy pythonXY.dll (or pythonXY_d.dll)
ver = sys.version_info
dll = f'python{ver.major}{ver.minor}'
dll3 = f'python{ver.major}'
if debug_build(sys.executable):
dll += '_d'
dll3 += '_d'
dll += '.dll'
dll3 += '.dll'
dll = os.path.join(os.path.dirname(self.test_exe), dll)
dll3 = os.path.join(os.path.dirname(self.test_exe), dll3)
dll_copy = os.path.join(tmpdir, os.path.basename(dll))
dll3_copy = os.path.join(tmpdir, os.path.basename(dll3))
shutil.copyfile(dll, dll_copy)
shutil.copyfile(dll3, dll3_copy)
# Copy Python program
exec_copy = os.path.join(tmpdir, os.path.basename(self.test_exe))
@ -1254,9 +1262,18 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
config['base_prefix'] = pyvenv_home
config['prefix'] = pyvenv_home
env = self.copy_paths_by_env(config)
self.check_all_configs("test_init_compat_config", config,
api=API_COMPAT, env=env,
ignore_stderr=True, cwd=tmpdir)
actual = self.check_all_configs("test_init_compat_config", config,
api=API_COMPAT, env=env,
ignore_stderr=True, cwd=tmpdir)
if MS_WINDOWS:
self.assertEqual(
actual['windows']['python3_dll'],
os.path.join(
tmpdir,
os.path.basename(self.EXPECTED_CONFIG['windows']['python3_dll'])
)
)
def test_global_pathconfig(self):
# Test C API functions getting the path configuration: