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* [3.11] gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96500)Gregory P. Smith2022-09-021-0/+2
| | | | | | | | | | | | | | | | | | Integer to and from text conversions via CPython's bignum `int` type is not safe against denial of service attacks due to malicious input. Very large input strings with hundred thousands of digits can consume several CPU seconds. This PR comes fresh from a pile of work done in our private PSRT security response team repo. This backports https://github.com/python/cpython/pull/96499 aka 511ca9452033ef95bc7d7fc404b8161068226002 Signed-off-by: Christian Heimes [Red Hat] <christian@python.org> Tons-of-polishing-up-by: Gregory P. Smith [Google] <greg@krypto.org> Reviews via the private PSRT repo via many others (see the NEWS entry in the PR). <!-- gh-issue-number: gh-95778 --> * Issue: gh-95778 <!-- /gh-issue-number --> I wrote up [a one pager for the release managers](https://docs.google.com/document/d/1KjuF_aXlzPUxTK4BMgezGJ2Pn7uevfX7g0_mvgHlL7Y/edit#).
* bpo-45582 Fix prototype of _Py_Get_Getpath_CodeObject. (GH-29907)Benjamin Peterson2021-12-031-1/+1
| | | Automerge-Triggered-By: GH:tiran
* bpo-45582: Port getpath[p].c to Python (GH-29041)Steve Dower2021-12-031-0/+4
| | | | | The getpath.py file is frozen at build time and executed as code over a namespace. It is never imported, nor is it meant to be importable or reusable. However, it should be easier to read, modify, and patch than the previous code. This commit attempts to preserve every previously tested quirk, but these may be changed in the future to better align platforms.
* bpo-45020: Add -X frozen_modules=[on|off] to explicitly control use of ↵Eric Snow2021-09-141-0/+1
| | | | | | | frozen modules. (gh-28320) Currently we freeze several modules into the runtime. For each of these modules it is essential to bootstrapping the runtime that they be frozen. Any other stdlib module that we later freeze into the runtime is not essential. We can just as well import from the .py file. This PR lets users explicitly choose which should be used, with the new "-X frozen_modules=[on|off]" CLI flag. The default is "off" for now. https://bugs.python.org/issue45020
* bpo-43510: Implement PEP 597 opt-in EncodingWarning. (GH-19481)Inada Naoki2021-03-291-0/+1
| | | | | | | | | | | See [PEP 597](https://www.python.org/dev/peps/pep-0597/). * Add `-X warn_default_encoding` and `PYTHONWARNDEFAULTENCODING`. * Add EncodingWarning * Add io.text_encoding() * open(), TextIOWrapper() emits EncodingWarning when encoding is omitted and warn_default_encoding is enabled. * _pyio.TextIOWrapper() uses UTF-8 as fallback default encoding used when failed to import locale module. (used during building Python) * bz2, configparser, gzip, lzma, pathlib, tempfile modules use io.text_encoding(). * What's new entry
* bpo-42260: Fix _PyConfig_Read() if compute_path_config=0 (GH-23220)Victor Stinner2020-11-101-1/+3
| | | | | | | | | | | | | | | | | | | Fix _PyConfig_Read() if compute_path_config=0: use values set by Py_SetPath(), Py_SetPythonHome() and Py_SetProgramName(). Add compute_path_config parameter to _PyConfig_InitPathConfig(). The following functions now return NULL if called before Py_Initialize(): * Py_GetExecPrefix() * Py_GetPath() * Py_GetPrefix() * Py_GetProgramFullPath() * Py_GetProgramName() * Py_GetPythonHome() These functions no longer automatically computes the Python Path Configuration. Moreover, Py_SetPath() no longer computes program_full_path.
* bpo-42260: Compute the path config in the main init (GH-23211)Victor Stinner2020-11-101-0/+1
| | | | | | | | | | | | | | | | | | | | | The path configuration is now computed in the "main" initialization. The core initialization no longer computes it. * Add _PyConfig_Read() function to read the configuration without computing the path configuration. * pyinit_core() no longer computes the path configuration: it is now computed by init_interp_main(). * The path configuration output members of PyConfig are now optional: * executable * base_executable * prefix * base_prefix * exec_prefix * base_exec_prefix * _PySys_UpdateConfig() now skips NULL strings in PyConfig. * _testembed: Rename test_set_config() to test_init_set_config() for consistency with other tests.
* bpo-42260: Add _PyConfig_FromDict() (GH-23167)Victor Stinner2020-11-051-0/+3
| | | | | | | * Rename config_as_dict() to _PyConfig_AsDict(). * Add 'module_search_paths_set' to _PyConfig_AsDict(). * Add _PyConfig_FromDict(). * Add get_config() and set_config() to _testinternalcapi. * Add config_check_consistency().
* bpo-42260: Add _PyInterpreterState_SetConfig() (GH-23158)Victor Stinner2020-11-041-0/+2
| | | | | | | | * Inline _PyInterpreterState_SetConfig(): replace it with _PyConfig_Copy(). * Add _PyErr_SetFromPyStatus() * Add _PyInterpreterState_GetConfigCopy() * Add a new _PyInterpreterState_SetConfig() function. * Add an unit which gets, modifies, and sets the config.
* bpo-40910: Export Py_GetArgcArgv() function (GH-20721)Victor Stinner2020-06-081-1/+1
| | | | | | | | | | | | Export explicitly the Py_GetArgcArgv() function to the C API and document the function. Previously, it was exported implicitly which no longer works since Python is built with -fvisibility=hidden. * Add PyConfig._orig_argv member. * Py_InitializeFromConfig() no longer calls _PyConfig_Write() twice. * PyConfig_Read() no longer initializes Py_GetArgcArgv(): it is now _PyConfig_Write() responsibility. * _PyConfig_Write() result type becomes PyStatus instead of void. * Write an unit test on Py_GetArgcArgv().
* bpo-38353: Fix compiler warning in pycore_initconfig.h (GH-16570)Victor Stinner2019-10-031-2/+2
| | | | Replace "_PyRuntimeState" with "struct pyruntimestate" to avoid a warning on typedef re-definition.
* bpo-38353: Cleanup includes in the internal C API (GH-16548)Victor Stinner2019-10-021-2/+3
| | | | Use forward declaration of types to avoid includes in the internal C API. Add also comment to justify other includes.
* bpo-38304: PyConfig_InitPythonConfig() cannot fail anymore (GH-16509)Victor Stinner2019-10-011-1/+1
| | | | PyConfig_InitPythonConfig() and PyConfig_InitIsolatedConfig() no longer return PyStatus: they cannot fail anymore.
* bpo-38304: Remove PyConfig.struct_size (GH-16500) (GH-16508)Victor Stinner2019-10-011-2/+2
| | | | | | | For now, we'll rely on the fact that the config structures aren't covered by the stable ABI. We may revisit this in the future if we further explore the idea of offering a stable embedding API. (cherry picked from commit bdace21b769998396d0ccc8da99a8ca9b507bfdf)
* bpo-38317: Fix PyConfig.warnoptions priority (GH-16478)Victor Stinner2019-09-291-1/+1
| | | | | | | | | Fix warnings options priority: PyConfig.warnoptions has the highest priority, as stated in the PEP 587. * Document options order in PyConfig.warnoptions documentation. * Make PyWideStringList_INIT macro private: replace "Py" prefix with "_Py". * test_embed: add test_init_warnoptions().
* bpo-38304: Add PyConfig.struct_size (GH-16451)Victor Stinner2019-09-281-6/+6
| | | | | | | | | | | | | | | | | Add a new struct_size field to PyPreConfig and PyConfig structures to allow to modify these structures in the future without breaking the backward compatibility. * Replace private _config_version field with public struct_size field in PyPreConfig and PyConfig. * Public PyPreConfig_InitIsolatedConfig() and PyPreConfig_InitPythonConfig() return type becomes PyStatus, instead of void. * Internal _PyConfig_InitCompatConfig(), _PyPreConfig_InitCompatConfig(), _PyPreConfig_InitFromConfig(), _PyPreConfig_InitFromPreConfig() return type becomes PyStatus, instead of void. * Remove _Py_CONFIG_VERSION * Update the Initialization Configuration documentation.
* bpo-38234: Remove _PyPathConfig.dll_path (GH-16307)Victor Stinner2019-09-201-2/+0
| | | | | | | | | The DLL path is not computed from any user configuration and cannot be configured by PyConfig. Instead, add a new _Py_dll_path global variable. Remove _PyConfig_SetPathConfig(): replaced with _PyPathConfig_Init(). Py_Initialize() now longer sets the "global path configuration", but only initialize _Py_dll_path.
* bpo-36763: Implement the PEP 587 (GH-13592)Victor Stinner2019-05-271-0/+168
* Add a whole new documentation page: "Python Initialization Configuration" * PyWideStringList_Append() return type is now PyStatus, instead of int * PyInterpreterState_New() now calls PyConfig_Clear() if PyConfig_InitPythonConfig() fails. * Rename files: * Python/coreconfig.c => Python/initconfig.c * Include/cpython/coreconfig.h => Include/cpython/initconfig.h * Include/internal/: pycore_coreconfig.h => pycore_initconfig.h * Rename structures * _PyCoreConfig => PyConfig * _PyPreConfig => PyPreConfig * _PyInitError => PyStatus * _PyWstrList => PyWideStringList * Rename PyConfig fields: * use_module_search_paths => module_search_paths_set * module_search_path_env => pythonpath_env * Rename PyStatus field: _func => func * PyInterpreterState: rename core_config field to config * Rename macros and functions: * _PyCoreConfig_SetArgv() => PyConfig_SetBytesArgv() * _PyCoreConfig_SetWideArgv() => PyConfig_SetArgv() * _PyCoreConfig_DecodeLocale() => PyConfig_SetBytesString() * _PyInitError_Failed() => PyStatus_Exception() * _Py_INIT_ERROR_TYPE_xxx enums => _PyStatus_TYPE_xxx * _Py_UnixMain() => Py_BytesMain() * _Py_ExitInitError() => Py_ExitStatusException() * _Py_PreInitializeFromArgs() => Py_PreInitializeFromBytesArgs() * _Py_PreInitializeFromWideArgs() => Py_PreInitializeFromArgs() * _Py_PreInitialize() => Py_PreInitialize() * _Py_RunMain() => Py_RunMain() * _Py_InitializeFromConfig() => Py_InitializeFromConfig() * _Py_INIT_XXX() => _PyStatus_XXX() * _Py_INIT_FAILED() => _PyStatus_EXCEPTION() * Rename 'err' PyStatus variables to 'status' * Convert RUN_CODE() macro to config_run_code() static inline function * Remove functions: * _Py_InitializeFromArgs() * _Py_InitializeFromWideArgs() * _PyInterpreterState_GetCoreConfig()
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