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[3.6] bpo-13617: Reject embedded null characters in wchar* strings. (GH-2302) (#2462)

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Based on patch by Victor Stinner.

Add private C API function _PyUnicode_AsUnicode() which is similar to
PyUnicode_AsUnicode(), but checks for null characters..
(cherry picked from commit f7eae0adfc)
This commit is contained in:
Serhiy Storchaka 2017-06-28 09:27:35 +03:00 • committed by GitHub
parent 413c0a92bc
commit 0834905d9b
22 changed files with 115 additions and 24 deletions
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10
Include/unicodeobject.h
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@ -752,23 +752,27 @@ PyAPI_FUNC(Py_UCS4*) PyUnicode_AsUCS4(
PyAPI_FUNC(Py_UCS4*) PyUnicode_AsUCS4Copy(PyObject *unicode);
#endif
#ifndef Py_LIMITED_API
/* Return a read-only pointer to the Unicode object's internal
Py_UNICODE buffer.
If the wchar_t/Py_UNICODE representation is not yet available, this
function will calculate it. */
#ifndef Py_LIMITED_API
PyAPI_FUNC(Py_UNICODE *) PyUnicode_AsUnicode(
PyObject *unicode /* Unicode object */
);
#endif
/* Similar to PyUnicode_AsUnicode(), but raises a ValueError if the string
contains null characters. */
PyAPI_FUNC(const Py_UNICODE *) _PyUnicode_AsUnicode(
PyObject *unicode /* Unicode object */
);
/* Return a read-only pointer to the Unicode object's internal
Py_UNICODE buffer and save the length at size.
If the wchar_t/Py_UNICODE representation is not yet available, this
function will calculate it. */
#ifndef Py_LIMITED_API
PyAPI_FUNC(Py_UNICODE *) PyUnicode_AsUnicodeAndSize(
PyObject *unicode, /* Unicode object */
Py_ssize_t *size /* location where to save the length */