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gh-114099 - Add iOS framework loading machinery. (GH-116454)

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Co-authored-by: Malcolm Smith <smith@chaquo.com>
Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
This commit is contained in:
Russell Keith-Magee 2024-03-19 20:36:19 +08:00 committed by GitHub
parent a557478987
commit 408e127159
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22 changed files with 302 additions and 62 deletions
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2
.gitignore vendored
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@ -69,7 +69,7 @@ Lib/test/data/*
/_bootstrap_python
/Makefile
/Makefile.pre
iOSTestbed.*
/iOSTestbed.*
iOS/Frameworks/
iOS/Resources/Info.plist
iOS/testbed/build

63
Doc/library/importlib.rst
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@ -1241,6 +1241,69 @@ find and load modules.
and how the module's :attr:`__file__` is populated.
.. class:: AppleFrameworkLoader(name, path)
A specialization of :class:`importlib.machinery.ExtensionFileLoader` that
is able to load extension modules in Framework format.
For compatibility with the iOS App Store, *all* binary modules in an iOS app
must be dynamic libraries, contained in a framework with appropriate
metadata, stored in the ``Frameworks`` folder of the packaged app. There can
be only a single binary per framework, and there can be no executable binary
material outside the Frameworks folder.
To accomodate this requirement, when running on iOS, extension module
binaries are *not* packaged as ``.so`` files on ``sys.path``, but as
individual standalone frameworks. To discover those frameworks, this loader
is be registered against the ``.fwork`` file extension, with a ``.fwork``
file acting as a placeholder in the original location of the binary on
``sys.path``. The ``.fwork`` file contains the path of the actual binary in
the ``Frameworks`` folder, relative to the app bundle. To allow for
resolving a framework-packaged binary back to the original location, the
framework is expected to contain a ``.origin`` file that contains the
location of the ``.fwork`` file, relative to the app bundle.
For example, consider the case of an import ``from foo.bar import _whiz``,
where ``_whiz`` is implemented with the binary module
``sources/foo/bar/_whiz.abi3.so``, with ``sources`` being the location
registered on ``sys.path``, relative to the application bundle. This module
*must* be distributed as
``Frameworks/foo.bar._whiz.framework/foo.bar._whiz`` (creating the framework
name from the full import path of the module), with an ``Info.plist`` file
in the ``.framework`` directory identifying the binary as a framework. The
``foo.bar._whiz`` module would be represented in the original location with
a ``sources/foo/bar/_whiz.abi3.fwork`` marker file, containing the path
``Frameworks/foo.bar._whiz/foo.bar._whiz``. The framework would also contain
``Frameworks/foo.bar._whiz.framework/foo.bar._whiz.origin``, containing the
path to the ``.fwork`` file.
When a module is loaded with this loader, the ``__file__`` for the module
will report as the location of the ``.fwork`` file. This allows code to use
the ``__file__`` of a module as an anchor for file system traveral.
However, the spec origin will reference the location of the *actual* binary
in the ``.framework`` folder.
The Xcode project building the app is responsible for converting any ``.so``
files from wherever they exist in the ``PYTHONPATH`` into frameworks in the
``Frameworks`` folder (including stripping extensions from the module file,
the addition of framework metadata, and signing the resulting framework),
and creating the ``.fwork`` and ``.origin`` files. This will usually be done
with a build step in the Xcode project; see the iOS documentation for
details on how to construct this build step.
.. versionadded:: 3.13
.. availability:: iOS.
.. attribute:: name
Name of the module the loader supports.
.. attribute:: path
Path to the ``.fwork`` file for the extension module.
:mod:`importlib.util` -- Utility code for importers
---------------------------------------------------

2
Doc/tools/extensions/pyspecific.py
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@ -133,7 +133,7 @@ class Availability(SphinxDirective):
known_platforms = frozenset({
"AIX", "Android", "BSD", "DragonFlyBSD", "Emscripten", "FreeBSD",
"GNU/kFreeBSD", "Linux", "NetBSD", "OpenBSD", "POSIX", "Solaris",
"Unix", "VxWorks", "WASI", "Windows", "macOS",
"Unix", "VxWorks", "WASI", "Windows", "macOS", "iOS",
# libc
"BSD libc", "glibc", "musl",
# POSIX platforms with pthreads

11
Lib/ctypes/__init__.py
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@ -348,6 +348,17 @@ class CDLL(object):
winmode=None):
if name:
name = _os.fspath(name)
# If the filename that has been provided is an iOS/tvOS/watchOS
# .fwork file, dereference the location to the true origin of the
# binary.
if name.endswith(".fwork"):
with open(name) as f:
name = _os.path.join(
_os.path.dirname(_sys.executable),
f.read().strip()
)
self._name = name
flags = self._func_flags_
if use_errno:

2
Lib/ctypes/util.py
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@ -67,7 +67,7 @@ if os.name == "nt":
return fname
return None
elif os.name == "posix" and sys.platform == "darwin":
elif os.name == "posix" and sys.platform in {"darwin", "ios", "tvos", "watchos"}:
from ctypes.macholib.dyld import dyld_find as _dyld_find
def find_library(name):
possible = ['lib%s.dylib' % name,

53
Lib/importlib/_bootstrap_external.py
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@ -52,7 +52,7 @@ _pathseps_with_colon = {f':{s}' for s in path_separators}
# Bootstrap-related code ######################################################
_CASE_INSENSITIVE_PLATFORMS_STR_KEY = 'win',
_CASE_INSENSITIVE_PLATFORMS_BYTES_KEY = 'cygwin', 'darwin'
_CASE_INSENSITIVE_PLATFORMS_BYTES_KEY = 'cygwin', 'darwin', 'ios', 'tvos', 'watchos'
_CASE_INSENSITIVE_PLATFORMS = (_CASE_INSENSITIVE_PLATFORMS_BYTES_KEY
+ _CASE_INSENSITIVE_PLATFORMS_STR_KEY)
@ -1714,6 +1714,46 @@ class FileFinder:
return f'FileFinder({self.path!r})'
class AppleFrameworkLoader(ExtensionFileLoader):
"""A loader for modules that have been packaged as frameworks for
compatibility with Apple's iOS App Store policies.
"""
def create_module(self, spec):
# If the ModuleSpec has been created by the FileFinder, it will have
# been created with an origin pointing to the .fwork file. We need to
# redirect this to the location in the Frameworks folder, using the
# content of the .fwork file.
if spec.origin.endswith(".fwork"):
with _io.FileIO(spec.origin, 'r') as file:
framework_binary = file.read().decode().strip()
bundle_path = _path_split(sys.executable)[0]
spec.origin = _path_join(bundle_path, framework_binary)
# If the loader is created based on the spec for a loaded module, the
# path will be pointing at the Framework location. If this occurs,
# get the original .fwork location to use as the module's __file__.
if self.path.endswith(".fwork"):
path = self.path
else:
with _io.FileIO(self.path + ".origin", 'r') as file:
origin = file.read().decode().strip()
bundle_path = _path_split(sys.executable)[0]
path = _path_join(bundle_path, origin)
module = _bootstrap._call_with_frames_removed(_imp.create_dynamic, spec)
_bootstrap._verbose_message(
"Apple framework extension module {!r} loaded from {!r} (path {!r})",
spec.name,
spec.origin,
path,
)
# Ensure that the __file__ points at the .fwork location
module.__file__ = path
return module
# Import setup ###############################################################
def _fix_up_module(ns, name, pathname, cpathname=None):
@ -1746,10 +1786,17 @@ def _get_supported_file_loaders():
Each item is a tuple (loader, suffixes).
"""
extensions = ExtensionFileLoader, _imp.extension_suffixes()
if sys.platform in {"ios", "tvos", "watchos"}:
extension_loaders = [(AppleFrameworkLoader, [
suffix.replace(".so", ".fwork")
for suffix in _imp.extension_suffixes()
])]
else:
extension_loaders = []
extension_loaders.append((ExtensionFileLoader, _imp.extension_suffixes()))
source = SourceFileLoader, SOURCE_SUFFIXES
bytecode = SourcelessFileLoader, BYTECODE_SUFFIXES
return [extensions, source, bytecode]
return extension_loaders + [source, bytecode]
def _set_bootstrap_module(_bootstrap_module):

6
Lib/importlib/abc.py
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@ -180,7 +180,11 @@ class ExecutionLoader(InspectLoader):
else:
return self.source_to_code(source, path)
_register(ExecutionLoader, machinery.ExtensionFileLoader)
_register(
ExecutionLoader,
machinery.ExtensionFileLoader,
machinery.AppleFrameworkLoader,
)
class FileLoader(_bootstrap_external.FileLoader, ResourceLoader, ExecutionLoader):

1
Lib/importlib/machinery.py
View File

@ -12,6 +12,7 @@ from ._bootstrap_external import FileFinder
from ._bootstrap_external import SourceFileLoader
from ._bootstrap_external import SourcelessFileLoader
from ._bootstrap_external import ExtensionFileLoader
from ._bootstrap_external import AppleFrameworkLoader
from ._bootstrap_external import NamespaceLoader

7
Lib/inspect.py
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@ -954,6 +954,10 @@ def getsourcefile(object):
elif any(filename.endswith(s) for s in
importlib.machinery.EXTENSION_SUFFIXES):
return None
elif filename.endswith(".fwork"):
# Apple mobile framework markers are another type of non-source file
return None
# return a filename found in the linecache even if it doesn't exist on disk
if filename in linecache.cache:
return filename
@ -984,6 +988,7 @@ def getmodule(object, _filename=None):
return object
if hasattr(object, '__module__'):
return sys.modules.get(object.__module__)
# Try the filename to modulename cache
if _filename is not None and _filename in modulesbyfile:
return sys.modules.get(modulesbyfile[_filename])
@ -1119,7 +1124,7 @@ def findsource(object):
# Allow filenames in form of "<something>" to pass through.
# `doctest` monkeypatches `linecache` module to enable
# inspection, so let `linecache.getlines` to be called.
if not (file.startswith('<') and file.endswith('>')):
if (not (file.startswith('<') and file.endswith('>'))) or file.endswith('.fwork'):
raise OSError('source code not available')
module = getmodule(object, file)

7
Lib/modulefinder.py
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@ -72,7 +72,12 @@ def _find_module(name, path=None):
if isinstance(spec.loader, importlib.machinery.SourceFileLoader):
kind = _PY_SOURCE
elif isinstance(spec.loader, importlib.machinery.ExtensionFileLoader):
elif isinstance(
spec.loader, (
importlib.machinery.ExtensionFileLoader,
importlib.machinery.AppleFrameworkLoader,
)
):
kind = _C_EXTENSION
elif isinstance(spec.loader, importlib.machinery.SourcelessFileLoader):

14
Lib/test/test_capi/test_misc.py
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@ -2056,6 +2056,13 @@ class SubinterpreterTest(unittest.TestCase):
self.addCleanup(os.close, r)
self.addCleanup(os.close, w)
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader.
if support.is_apple_mobile:
loader = "AppleFrameworkLoader"
else:
loader = "ExtensionFileLoader"
script = textwrap.dedent(f"""
import importlib.machinery
import importlib.util
@ -2063,7 +2070,7 @@ class SubinterpreterTest(unittest.TestCase):
fullname = '_test_module_state_shared'
origin = importlib.util.find_spec('_testmultiphase').origin
loader = importlib.machinery.ExtensionFileLoader(fullname, origin)
loader = importlib.machinery.{loader}(fullname, origin)
spec = importlib.util.spec_from_loader(fullname, loader)
module = importlib.util.module_from_spec(spec)
attr_id = str(id(module.Error)).encode()
@ -2371,6 +2378,11 @@ class Test_ModuleStateAccess(unittest.TestCase):
def setUp(self):
fullname = '_testmultiphase_meth_state_access' # XXX
origin = importlib.util.find_spec('_testmultiphase').origin
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader.
if support.is_apple_mobile:
loader = importlib.machinery.AppleFrameworkLoader(fullname, origin)
else:
loader = importlib.machinery.ExtensionFileLoader(fullname, origin)
spec = importlib.util.spec_from_loader(fullname, loader)
module = importlib.util.module_from_spec(spec)

82
Lib/test/test_import/__init__.py
View File

@ -5,7 +5,11 @@ import json
import importlib.util
from importlib._bootstrap_external import _get_sourcefile
from importlib.machinery import (
BuiltinImporter, ExtensionFileLoader, FrozenImporter, SourceFileLoader,
AppleFrameworkLoader,
BuiltinImporter,
ExtensionFileLoader,
FrozenImporter,
SourceFileLoader,
)
import marshal
import os
@ -25,7 +29,7 @@ import _imp
from test.support import os_helper
from test.support import (
STDLIB_DIR, swap_attr, swap_item, cpython_only, is_emscripten,
STDLIB_DIR, swap_attr, swap_item, cpython_only, is_apple_mobile, is_emscripten,
is_wasi, run_in_subinterp, run_in_subinterp_with_config, Py_TRACE_REFS)
from test.support.import_helper import (
forget, make_legacy_pyc, unlink, unload, ready_to_import,
@ -66,6 +70,7 @@ def _require_loader(module, loader, skip):
MODULE_KINDS = {
BuiltinImporter: 'built-in',
ExtensionFileLoader: 'extension',
AppleFrameworkLoader: 'framework extension',
FrozenImporter: 'frozen',
SourceFileLoader: 'pure Python',
}
@ -91,6 +96,11 @@ def require_builtin(module, *, skip=False):
assert module.__spec__.origin == 'built-in', module.__spec__
def require_extension(module, *, skip=False):
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader.
if is_apple_mobile:
_require_loader(module, AppleFrameworkLoader, skip)
else:
_require_loader(module, ExtensionFileLoader, skip)
def require_frozen(module, *, skip=True):
@ -134,7 +144,8 @@ if _testsinglephase is not None:
# it to its nominal state.
sys.modules.pop('_testsinglephase', None)
_orig._clear_globals()
_testinternalcapi.clear_extension('_testsinglephase', _orig.__file__)
origin = _orig.__spec__.origin
_testinternalcapi.clear_extension('_testsinglephase', origin)
import _testsinglephase
@ -360,7 +371,7 @@ class ImportTests(unittest.TestCase):
self.assertEqual(cm.exception.path, _testcapi.__file__)
self.assertRegex(
str(cm.exception),
r"cannot import name 'i_dont_exist' from '_testcapi' \(.*\.(so|pyd)\)"
r"cannot import name 'i_dont_exist' from '_testcapi' \(.*\.(so|fwork|pyd)\)"
)
else:
self.assertEqual(
@ -1689,6 +1700,14 @@ class SubinterpImportTests(unittest.TestCase):
os.set_blocking(r, False)
return (r, w)
def create_extension_loader(self, modname, filename):
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader.
if is_apple_mobile:
return AppleFrameworkLoader(modname, filename)
else:
return ExtensionFileLoader(modname, filename)
def import_script(self, name, fd, filename=None, check_override=None):
override_text = ''
if check_override is not None:
@ -1697,12 +1716,19 @@ class SubinterpImportTests(unittest.TestCase):
_imp._override_multi_interp_extensions_check({check_override})
'''
if filename:
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader.
if is_apple_mobile:
loader = "AppleFrameworkLoader"
else:
loader = "ExtensionFileLoader"
return textwrap.dedent(f'''
from importlib.util import spec_from_loader, module_from_spec
from importlib.machinery import ExtensionFileLoader
from importlib.machinery import {loader}
import os, sys
{override_text}
loader = ExtensionFileLoader({name!r}, {filename!r})
loader = {loader}({name!r}, {filename!r})
spec = spec_from_loader({name!r}, loader)
try:
module = module_from_spec(spec)
@ -1883,7 +1909,7 @@ class SubinterpImportTests(unittest.TestCase):
def test_multi_init_extension_non_isolated_compat(self):
modname = '_test_non_isolated'
filename = _testmultiphase.__file__
loader = ExtensionFileLoader(modname, filename)
loader = self.create_extension_loader(modname, filename)
spec = importlib.util.spec_from_loader(modname, loader)
module = importlib.util.module_from_spec(spec)
loader.exec_module(module)
@ -1901,7 +1927,7 @@ class SubinterpImportTests(unittest.TestCase):
def test_multi_init_extension_per_interpreter_gil_compat(self):
modname = '_test_shared_gil_only'
filename = _testmultiphase.__file__
loader = ExtensionFileLoader(modname, filename)
loader = self.create_extension_loader(modname, filename)
spec = importlib.util.spec_from_loader(modname, loader)
module = importlib.util.module_from_spec(spec)
loader.exec_module(module)
@ -2034,11 +2060,26 @@ class SinglephaseInitTests(unittest.TestCase):
@classmethod
def setUpClass(cls):
spec = importlib.util.find_spec(cls.NAME)
from importlib.machinery import ExtensionFileLoader
cls.FILE = spec.origin
cls.LOADER = type(spec.loader)
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader, and we need to differentiate between the
# spec.origin and the original file location.
if is_apple_mobile:
assert cls.LOADER is AppleFrameworkLoader
cls.ORIGIN = spec.origin
with open(spec.origin + ".origin", "r") as f:
cls.FILE = os.path.join(
os.path.dirname(sys.executable),
f.read().strip()
)
else:
assert cls.LOADER is ExtensionFileLoader
cls.ORIGIN = spec.origin
cls.FILE = spec.origin
# Start fresh.
cls.clean_up()
@ -2053,14 +2094,15 @@ class SinglephaseInitTests(unittest.TestCase):
@classmethod
def clean_up(cls):
name = cls.NAME
filename = cls.FILE
if name in sys.modules:
if hasattr(sys.modules[name], '_clear_globals'):
assert sys.modules[name].__file__ == filename
assert sys.modules[name].__file__ == cls.FILE, \
f"{sys.modules[name].__file__} != {cls.FILE}"
sys.modules[name]._clear_globals()
del sys.modules[name]
# Clear all internally cached data for the extension.
_testinternalcapi.clear_extension(name, filename)
_testinternalcapi.clear_extension(name, cls.ORIGIN)
#########################
# helpers
@ -2068,7 +2110,7 @@ class SinglephaseInitTests(unittest.TestCase):
def add_module_cleanup(self, name):
def clean_up():
# Clear all internally cached data for the extension.
_testinternalcapi.clear_extension(name, self.FILE)
_testinternalcapi.clear_extension(name, self.ORIGIN)
self.addCleanup(clean_up)
def _load_dynamic(self, name, path):
@ -2091,7 +2133,7 @@ class SinglephaseInitTests(unittest.TestCase):
except AttributeError:
already_loaded = self.already_loaded = {}
assert name not in already_loaded
mod = self._load_dynamic(name, self.FILE)
mod = self._load_dynamic(name, self.ORIGIN)
self.assertNotIn(mod, already_loaded.values())
already_loaded[name] = mod
return types.SimpleNamespace(
@ -2103,7 +2145,7 @@ class SinglephaseInitTests(unittest.TestCase):
def re_load(self, name, mod):
assert sys.modules[name] is mod
assert mod.__dict__ == mod.__dict__
reloaded = self._load_dynamic(name, self.FILE)
reloaded = self._load_dynamic(name, self.ORIGIN)
return types.SimpleNamespace(
name=name,
module=reloaded,
@ -2129,7 +2171,7 @@ class SinglephaseInitTests(unittest.TestCase):
name = {self.NAME!r}
if name in sys.modules:
sys.modules.pop(name)._clear_globals()
_testinternalcapi.clear_extension(name, {self.FILE!r})
_testinternalcapi.clear_extension(name, {self.ORIGIN!r})
'''))
_interpreters.destroy(interpid)
self.addCleanup(clean_up)
@ -2146,7 +2188,7 @@ class SinglephaseInitTests(unittest.TestCase):
postcleanup = f'''
{import_}
mod._clear_globals()
_testinternalcapi.clear_extension(name, {self.FILE!r})
_testinternalcapi.clear_extension(name, {self.ORIGIN!r})
'''
try:
@ -2184,7 +2226,7 @@ class SinglephaseInitTests(unittest.TestCase):
# mod.__name__ might not match, but the spec will.
self.assertEqual(mod.__spec__.name, loaded.name)
self.assertEqual(mod.__file__, self.FILE)
self.assertEqual(mod.__spec__.origin, self.FILE)
self.assertEqual(mod.__spec__.origin, self.ORIGIN)
if not isolated:
self.assertTrue(issubclass(mod.error, Exception))
self.assertEqual(mod.int_const, 1969)
@ -2578,7 +2620,7 @@ class SinglephaseInitTests(unittest.TestCase):
# First, load in the main interpreter but then completely clear it.
loaded_main = self.load(self.NAME)
loaded_main.module._clear_globals()
_testinternalcapi.clear_extension(self.NAME, self.FILE)
_testinternalcapi.clear_extension(self.NAME, self.ORIGIN)
# At this point:
# * alive in 0 interpreters

25
Lib/test/test_importlib/extension/test_finder.py
View File

@ -1,3 +1,4 @@
from test.support import is_apple_mobile
from test.test_importlib import abc, util
machinery = util.import_importlib('importlib.machinery')
@ -19,9 +20,27 @@ class FinderTests(abc.FinderTests):
)
def find_spec(self, fullname):
importer = self.machinery.FileFinder(util.EXTENSIONS.path,
(self.machinery.ExtensionFileLoader,
self.machinery.EXTENSION_SUFFIXES))
if is_apple_mobile:
# Apple mobile platforms require a specialist loader that uses
# .fwork files as placeholders for the true `.so` files.
loaders = [
(
self.machinery.AppleFrameworkLoader,
[
ext.replace(".so", ".fwork")
for ext in self.machinery.EXTENSION_SUFFIXES
]
)
]
else:
loaders = [
(
self.machinery.ExtensionFileLoader,
self.machinery.EXTENSION_SUFFIXES
)
]
importer = self.machinery.FileFinder(util.EXTENSIONS.path, *loaders)
return importer.find_spec(fullname)

56
Lib/test/test_importlib/extension/test_loader.py
View File

@ -1,3 +1,4 @@
from test.support import is_apple_mobile
from test.test_importlib import abc, util
machinery = util.import_importlib('importlib.machinery')
@ -23,8 +24,15 @@ class LoaderTests:
raise unittest.SkipTest(
f"{util.EXTENSIONS.name} is a builtin module"
)
self.loader = self.machinery.ExtensionFileLoader(util.EXTENSIONS.name,
util.EXTENSIONS.file_path)
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader.
if is_apple_mobile:
self.LoaderClass = self.machinery.AppleFrameworkLoader
else:
self.LoaderClass = self.machinery.ExtensionFileLoader
self.loader = self.LoaderClass(util.EXTENSIONS.name, util.EXTENSIONS.file_path)
def load_module(self, fullname):
with warnings.catch_warnings():
@ -32,13 +40,11 @@ class LoaderTests:
return self.loader.load_module(fullname)
def test_equality(self):
other = self.machinery.ExtensionFileLoader(util.EXTENSIONS.name,
util.EXTENSIONS.file_path)
other = self.LoaderClass(util.EXTENSIONS.name, util.EXTENSIONS.file_path)
self.assertEqual(self.loader, other)
def test_inequality(self):
other = self.machinery.ExtensionFileLoader('_' + util.EXTENSIONS.name,
util.EXTENSIONS.file_path)
other = self.LoaderClass('_' + util.EXTENSIONS.name, util.EXTENSIONS.file_path)
self.assertNotEqual(self.loader, other)
def test_load_module_API(self):
@ -58,8 +64,7 @@ class LoaderTests:
('__package__', '')]:
self.assertEqual(getattr(module, attr), value)
self.assertIn(util.EXTENSIONS.name, sys.modules)
self.assertIsInstance(module.__loader__,
self.machinery.ExtensionFileLoader)
self.assertIsInstance(module.__loader__, self.LoaderClass)
# No extension module as __init__ available for testing.
test_package = None
@ -86,7 +91,7 @@ class LoaderTests:
self.assertFalse(self.loader.is_package(util.EXTENSIONS.name))
for suffix in self.machinery.EXTENSION_SUFFIXES:
path = os.path.join('some', 'path', 'pkg', '__init__' + suffix)
loader = self.machinery.ExtensionFileLoader('pkg', path)
loader = self.LoaderClass('pkg', path)
self.assertTrue(loader.is_package('pkg'))
@ -101,6 +106,14 @@ class SinglePhaseExtensionModuleTests(abc.LoaderTests):
def setUp(self):
if not self.machinery.EXTENSION_SUFFIXES or not util.EXTENSIONS:
raise unittest.SkipTest("Requires dynamic loading support.")
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader.
if is_apple_mobile:
self.LoaderClass = self.machinery.AppleFrameworkLoader
else:
self.LoaderClass = self.machinery.ExtensionFileLoader
self.name = '_testsinglephase'
if self.name in sys.builtin_module_names:
raise unittest.SkipTest(
@ -109,8 +122,8 @@ class SinglePhaseExtensionModuleTests(abc.LoaderTests):
finder = self.machinery.FileFinder(None)
self.spec = importlib.util.find_spec(self.name)
assert self.spec
self.loader = self.machinery.ExtensionFileLoader(
self.name, self.spec.origin)
self.loader = self.LoaderClass(self.name, self.spec.origin)
def load_module(self):
with warnings.catch_warnings():
@ -120,7 +133,7 @@ class SinglePhaseExtensionModuleTests(abc.LoaderTests):
def load_module_by_name(self, fullname):
# Load a module from the test extension by name.
origin = self.spec.origin
loader = self.machinery.ExtensionFileLoader(fullname, origin)
loader = self.LoaderClass(fullname, origin)
spec = importlib.util.spec_from_loader(fullname, loader)
module = importlib.util.module_from_spec(spec)
loader.exec_module(module)
@ -137,8 +150,7 @@ class SinglePhaseExtensionModuleTests(abc.LoaderTests):
with self.assertRaises(AttributeError):
module.__path__
self.assertIs(module, sys.modules[self.name])
self.assertIsInstance(module.__loader__,
self.machinery.ExtensionFileLoader)
self.assertIsInstance(module.__loader__, self.LoaderClass)
# No extension module as __init__ available for testing.
test_package = None
@ -182,6 +194,14 @@ class MultiPhaseExtensionModuleTests(abc.LoaderTests):
def setUp(self):
if not self.machinery.EXTENSION_SUFFIXES or not util.EXTENSIONS:
raise unittest.SkipTest("Requires dynamic loading support.")
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader.
if is_apple_mobile:
self.LoaderClass = self.machinery.AppleFrameworkLoader
else:
self.LoaderClass = self.machinery.ExtensionFileLoader
self.name = '_testmultiphase'
if self.name in sys.builtin_module_names:
raise unittest.SkipTest(
@ -190,8 +210,7 @@ class MultiPhaseExtensionModuleTests(abc.LoaderTests):
finder = self.machinery.FileFinder(None)
self.spec = importlib.util.find_spec(self.name)
assert self.spec
self.loader = self.machinery.ExtensionFileLoader(
self.name, self.spec.origin)
self.loader = self.LoaderClass(self.name, self.spec.origin)
def load_module(self):
# Load the module from the test extension.
@ -202,7 +221,7 @@ class MultiPhaseExtensionModuleTests(abc.LoaderTests):
def load_module_by_name(self, fullname):
# Load a module from the test extension by name.
origin = self.spec.origin
loader = self.machinery.ExtensionFileLoader(fullname, origin)
loader = self.LoaderClass(fullname, origin)
spec = importlib.util.spec_from_loader(fullname, loader)
module = importlib.util.module_from_spec(spec)
loader.exec_module(module)
@ -228,8 +247,7 @@ class MultiPhaseExtensionModuleTests(abc.LoaderTests):
with self.assertRaises(AttributeError):
module.__path__
self.assertIs(module, sys.modules[self.name])
self.assertIsInstance(module.__loader__,
self.machinery.ExtensionFileLoader)
self.assertIsInstance(module.__loader__, self.LoaderClass)
def test_functionality(self):
# Test basic functionality of stuff defined in an extension module.

11
Lib/test/test_importlib/test_util.py
View File

@ -707,13 +707,20 @@ class IncompatibleExtensionModuleRestrictionsTests(unittest.TestCase):
@unittest.skipIf(_testmultiphase is None, "test requires _testmultiphase module")
def test_incomplete_multi_phase_init_module(self):
# Apple extensions must be distributed as frameworks. This requires
# a specialist loader.
if support.is_apple_mobile:
loader = "AppleFrameworkLoader"
else:
loader = "ExtensionFileLoader"
prescript = textwrap.dedent(f'''
from importlib.util import spec_from_loader, module_from_spec
from importlib.machinery import ExtensionFileLoader
from importlib.machinery import {loader}
name = '_test_shared_gil_only'
filename = {_testmultiphase.__file__!r}
loader = ExtensionFileLoader(name, filename)
loader = {loader}(name, filename)
spec = spec_from_loader(name, loader)
''')

6
Lib/test/test_importlib/util.py
View File

@ -8,6 +8,7 @@ import os
import os.path
from test import support
from test.support import import_helper
from test.support import is_apple_mobile
from test.support import os_helper
import unittest
import sys
@ -43,6 +44,11 @@ else:
global EXTENSIONS
for path in sys.path:
for ext in machinery.EXTENSION_SUFFIXES:
# Apple mobile platforms mechanically load .so files,
# but the findable files are labelled .fwork
if is_apple_mobile:
ext = ext.replace(".so", ".fwork")
filename = EXTENSIONS.name + ext
file_path = os.path.join(path, filename)
if os.path.exists(file_path):

2
Misc/NEWS.d/next/Core and Builtins/2024-03-07-16-12-39.gh-issue-114099.ujdjn2.rst Normal file
View File

@ -0,0 +1,2 @@
Added a Loader that can discover extension modules in an iOS-style Frameworks
folder.

1
configure generated vendored
View File

@ -12740,7 +12740,6 @@ if test -z "$SHLIB_SUFFIX"; then
esac
;;
CYGWIN*) SHLIB_SUFFIX=.dll;;
iOS) SHLIB_SUFFIX=.dylib;;
*) SHLIB_SUFFIX=.so;;
esac
fi

1
configure.ac
View File

@ -3285,7 +3285,6 @@ if test -z "$SHLIB_SUFFIX"; then
esac
;;
CYGWIN*) SHLIB_SUFFIX=.dll;;
iOS) SHLIB_SUFFIX=.dylib;;
*) SHLIB_SUFFIX=.so;;
esac
fi

2
iOS/Resources/Info.plist.in
View File

@ -17,7 +17,7 @@
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleShortVersionString</key>
<string>%VERSION%</string>
<string>@VERSION@</string>
<key>CFBundleLongVersionString</key>
<string>%VERSION%, (c) 2001-2024 Python Software Foundation.</string>
<key>CFBundleSignature</key>

2
iOS/testbed/iOSTestbed.xcodeproj/project.pbxproj
View File

@ -273,7 +273,7 @@
);
runOnlyForDeploymentPostprocessing = 0;
shellPath = /bin/sh;
shellScript = "set -e\n\ninstall_dylib () {\n INSTALL_BASE=$1\n FULL_DYLIB=$2\n\n # The name of the .dylib file\n DYLIB=$(basename \"$FULL_DYLIB\")\n # The name of the .dylib file, relative to the install base\n RELATIVE_DYLIB=${FULL_DYLIB#$CODESIGNING_FOLDER_PATH/$INSTALL_BASE/}\n # The full dotted name of the binary module, constructed from the file path.\n FULL_MODULE_NAME=$(echo $RELATIVE_DYLIB | cut -d \".\" -f 1 | tr \"/\" \".\"); \n # A bundle identifier; not actually used, but required by Xcode framework packaging\n FRAMEWORK_BUNDLE_ID=$(echo $PRODUCT_BUNDLE_IDENTIFIER.$FULL_MODULE_NAME | tr \"_\" \"-\")\n # The name of the framework folder.\n FRAMEWORK_FOLDER=\"Frameworks/$FULL_MODULE_NAME.framework\"\n\n # If the framework folder doesn't exist, create it.\n if [ ! -d \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER\" ]; then\n echo \"Creating framework for $RELATIVE_DYLIB\" \n mkdir -p \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER\"\n cp \"$CODESIGNING_FOLDER_PATH/dylib-Info-template.plist\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n plutil -replace CFBundleExecutable -string \"$DYLIB\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n plutil -replace CFBundleIdentifier -string \"$FRAMEWORK_BUNDLE_ID\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\" \n fi\n \n echo \"Installing binary for $RELATIVE_DYLIB\" \n mv \"$FULL_DYLIB\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER\"\n}\n\nPYTHON_VER=$(ls -1 \"$CODESIGNING_FOLDER_PATH/python/lib\")\necho \"Install Python $PYTHON_VER standard library dylibs...\"\nfind \"$CODESIGNING_FOLDER_PATH/python/lib/$PYTHON_VER/lib-dynload\" -name \"*.dylib\" | while read FULL_DYLIB; do\n install_dylib python/lib/$PYTHON_VER/lib-dynload \"$FULL_DYLIB\"\ndone\n\n# Clean up dylib template \nrm -f \"$CODESIGNING_FOLDER_PATH/dylib-Info-template.plist\"\necho \"Signing frameworks as $EXPANDED_CODE_SIGN_IDENTITY_NAME ($EXPANDED_CODE_SIGN_IDENTITY)...\"\nfind \"$CODESIGNING_FOLDER_PATH/Frameworks\" -name \"*.framework\" -exec /usr/bin/codesign --force --sign \"$EXPANDED_CODE_SIGN_IDENTITY\" ${OTHER_CODE_SIGN_FLAGS:-} -o runtime --timestamp=none --preserve-metadata=identifier,entitlements,flags --generate-entitlement-der \"{}\" \\; \n";
shellScript = "set -e\n\ninstall_dylib () {\n INSTALL_BASE=$1\n FULL_EXT=$2\n\n # The name of the extension file\n EXT=$(basename \"$FULL_EXT\")\n # The location of the extension file, relative to the bundle\n RELATIVE_EXT=${FULL_EXT#$CODESIGNING_FOLDER_PATH/} \n # The path to the extension file, relative to the install base\n PYTHON_EXT=${RELATIVE_EXT/$INSTALL_BASE/}\n # The full dotted name of the extension module, constructed from the file path.\n FULL_MODULE_NAME=$(echo $PYTHON_EXT | cut -d \".\" -f 1 | tr \"/\" \".\"); \n # A bundle identifier; not actually used, but required by Xcode framework packaging\n FRAMEWORK_BUNDLE_ID=$(echo $PRODUCT_BUNDLE_IDENTIFIER.$FULL_MODULE_NAME | tr \"_\" \"-\")\n # The name of the framework folder.\n FRAMEWORK_FOLDER=\"Frameworks/$FULL_MODULE_NAME.framework\"\n\n # If the framework folder doesn't exist, create it.\n if [ ! -d \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER\" ]; then\n echo \"Creating framework for $RELATIVE_EXT\" \n mkdir -p \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER\"\n cp \"$CODESIGNING_FOLDER_PATH/dylib-Info-template.plist\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n plutil -replace CFBundleExecutable -string \"$FULL_MODULE_NAME\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n plutil -replace CFBundleIdentifier -string \"$FRAMEWORK_BUNDLE_ID\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n fi\n \n echo \"Installing binary for $FRAMEWORK_FOLDER/$FULL_MODULE_NAME\" \n mv \"$FULL_EXT\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/$FULL_MODULE_NAME\"\n # Create a placeholder .fwork file where the .so was\n echo \"$FRAMEWORK_FOLDER/$FULL_MODULE_NAME\" > ${FULL_EXT%.so}.fwork\n # Create a back reference to the .so file location in the framework\n echo \"${RELATIVE_EXT%.so}.fwork\" > \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/$FULL_MODULE_NAME.origin\" \n}\n\nPYTHON_VER=$(ls -1 \"$CODESIGNING_FOLDER_PATH/python/lib\")\necho \"Install Python $PYTHON_VER standard library extension modules...\"\nfind \"$CODESIGNING_FOLDER_PATH/python/lib/$PYTHON_VER/lib-dynload\" -name \"*.so\" | while read FULL_EXT; do\n install_dylib python/lib/$PYTHON_VER/lib-dynload/ \"$FULL_EXT\"\ndone\n\n# Clean up dylib template \nrm -f \"$CODESIGNING_FOLDER_PATH/dylib-Info-template.plist\"\necho \"Signing frameworks as $EXPANDED_CODE_SIGN_IDENTITY_NAME ($EXPANDED_CODE_SIGN_IDENTITY)...\"\nfind \"$CODESIGNING_FOLDER_PATH/Frameworks\" -name \"*.framework\" -exec /usr/bin/codesign --force --sign \"$EXPANDED_CODE_SIGN_IDENTITY\" ${OTHER_CODE_SIGN_FLAGS:-} -o runtime --timestamp=none --preserve-metadata=identifier,entitlements,flags --generate-entitlement-der \"{}\" \\; \n";
};
/* End PBXShellScriptBuildPhase section */

2
iOS/testbed/iOSTestbedTests/iOSTestbedTests.m
View File

@ -15,7 +15,7 @@
const char *argv[] = {
"iOSTestbed", // argv[0] is the process that is running.
"-uall", // Enable all resources
"-v", // run in verbose mode so we get test failure information
"-W", // Display test output on failure
// To run a subset of tests, add the test names below; e.g.,
// "test_os",
// "test_sys",