gh-111089: Revert PyUnicode_AsUTF8() changes (#111833)

* Revert "gh-111089: Use PyUnicode_AsUTF8() in Argument Clinic (#111585)"

This reverts commit d9b606b3d04fc56fb0bcc479d7d6c14562edb5e2.

* Revert "gh-111089: Use PyUnicode_AsUTF8() in getargs.c (#111620)"

This reverts commit cde1071b2a72e8261ca66053ef61431b7f3a81fd.

* Revert "gh-111089: PyUnicode_AsUTF8() now raises on embedded NUL (#111091)"

This reverts commit d731579bfb9a497cfb0076cb6b221058a20088fe.

* Revert "gh-111089: Add PyUnicode_AsUTF8() to the limited C API (#111121)"

This reverts commit d8f32be5b6a736dc2fc9dca3f1bf176c82fc9b44.

* Revert "gh-111089: Use PyUnicode_AsUTF8() in sqlite3 (#111122)"

This reverts commit 37e4e20eaa8f27ada926d49e5971fecf0477ad26.

1 files changed, 25 insertions, 5 deletions

diff --git a/Modules/clinic/_cursesmodule.c.h b/Modules/clinic/_cursesmodule.c.h
index 409c615..f7e0aaf 100644
--- a/Modules/clinic/_cursesmodule.c.h
+++ b/Modules/clinic/_cursesmodule.c.h
@@ -2726,10 +2726,15 @@ _curses_setupterm(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
             term = NULL;
         }
         else if (PyUnicode_Check(args[0])) {
-            term = PyUnicode_AsUTF8(args[0]);
+            Py_ssize_t term_length;
+            term = PyUnicode_AsUTF8AndSize(args[0], &term_length);
             if (term == NULL) {
                 goto exit;
             }
+            if (strlen(term) != (size_t)term_length) {
+                PyErr_SetString(PyExc_ValueError, "embedded null character");
+                goto exit;
+            }
         }
         else {
             _PyArg_BadArgument("setupterm", "argument 'term'", "str or None", args[0]);
@@ -3921,10 +3926,15 @@ _curses_tigetflag(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("tigetflag", "argument", "str", arg);
         goto exit;
     }
-    capname = PyUnicode_AsUTF8(arg);
+    Py_ssize_t capname_length;
+    capname = PyUnicode_AsUTF8AndSize(arg, &capname_length);
     if (capname == NULL) {
         goto exit;
     }
+    if (strlen(capname) != (size_t)capname_length) {
+        PyErr_SetString(PyExc_ValueError, "embedded null character");
+        goto exit;
+    }
     return_value = _curses_tigetflag_impl(module, capname);
 
 exit:
@@ -3959,10 +3969,15 @@ _curses_tigetnum(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("tigetnum", "argument", "str", arg);
         goto exit;
     }
-    capname = PyUnicode_AsUTF8(arg);
+    Py_ssize_t capname_length;
+    capname = PyUnicode_AsUTF8AndSize(arg, &capname_length);
     if (capname == NULL) {
         goto exit;
     }
+    if (strlen(capname) != (size_t)capname_length) {
+        PyErr_SetString(PyExc_ValueError, "embedded null character");
+        goto exit;
+    }
     return_value = _curses_tigetnum_impl(module, capname);
 
 exit:
@@ -3997,10 +4012,15 @@ _curses_tigetstr(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("tigetstr", "argument", "str", arg);
         goto exit;
     }
-    capname = PyUnicode_AsUTF8(arg);
+    Py_ssize_t capname_length;
+    capname = PyUnicode_AsUTF8AndSize(arg, &capname_length);
     if (capname == NULL) {
         goto exit;
     }
+    if (strlen(capname) != (size_t)capname_length) {
+        PyErr_SetString(PyExc_ValueError, "embedded null character");
+        goto exit;
+    }
     return_value = _curses_tigetstr_impl(module, capname);
 
 exit:
@@ -4298,4 +4318,4 @@ _curses_has_extended_color_support(PyObject *module, PyObject *Py_UNUSED(ignored
 #ifndef _CURSES_USE_DEFAULT_COLORS_METHODDEF
     #define _CURSES_USE_DEFAULT_COLORS_METHODDEF
 #endif /* !defined(_CURSES_USE_DEFAULT_COLORS_METHODDEF) */
-/*[clinic end generated code: output=555e266fc4838612 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=96887782374f070a input=a9049054013a1b77]*/