gh-126579: Adapt sys.audit() to Argument Clinic (GH-126580)

Python/clinic/sysmodule.c.h

@@ -7,6 +7,7 @@ preserve
 #  include "pycore_runtime.h"     // _Py_ID()
 #endif
 #include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
+#include "pycore_tuple.h"         // _PyTuple_FromArray()
 
 PyDoc_STRVAR(sys_addaudithook__doc__,
 "addaudithook($module, /, hook)\n"
@@ -64,6 +65,54 @@ exit:
     return return_value;
 }
 
+PyDoc_STRVAR(sys_audit__doc__,
+"audit($module, event, /, *args)\n"
+"--\n"
+"\n"
+"Passes the event to any audit hooks that are attached.");
+
+#define SYS_AUDIT_METHODDEF    \
+    {"audit", _PyCFunction_CAST(sys_audit), METH_FASTCALL, sys_audit__doc__},
+
+static PyObject *
+sys_audit_impl(PyObject *module, const char *event, PyObject *args);
+
+static PyObject *
+sys_audit(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    const char *event;
+    PyObject *__clinic_args = NULL;
+
+    if (!_PyArg_CheckPositional("audit", nargs, 1, PY_SSIZE_T_MAX)) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[0])) {
+        _PyArg_BadArgument("audit", "argument 1", "str", args[0]);
+        goto exit;
+    }
+    Py_ssize_t event_length;
+    event = PyUnicode_AsUTF8AndSize(args[0], &event_length);
+    if (event == NULL) {
+        goto exit;
+    }
+    if (strlen(event) != (size_t)event_length) {
+        PyErr_SetString(PyExc_ValueError, "embedded null character");
+        goto exit;
+    }
+    __clinic_args = _PyTuple_FromArray(args + 1, nargs - 1);
+    if (__clinic_args == NULL) {
+        goto exit;
+    }
+    return_value = sys_audit_impl(module, event, __clinic_args);
+
+exit:
+    /* Cleanup for args */
+    Py_XDECREF(__clinic_args);
+
+    return return_value;
+}
+
 PyDoc_STRVAR(sys_displayhook__doc__,
 "displayhook($module, object, /)\n"
 "--\n"
@@ -1619,4 +1668,4 @@ exit:
 #ifndef SYS_GETANDROIDAPILEVEL_METHODDEF
     #define SYS_GETANDROIDAPILEVEL_METHODDEF
 #endif /* !defined(SYS_GETANDROIDAPILEVEL_METHODDEF) */
-/*[clinic end generated code: output=cf24c260a269a5d2 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=6d4f6cd20419b675 input=a9049054013a1b77]*/

Python/sysmodule.c

@@ -499,56 +499,28 @@ sys_addaudithook_impl(PyObject *module, PyObject *hook)
     Py_RETURN_NONE;
 }
 
-PyDoc_STRVAR(audit_doc,
+/*[clinic input]
-"audit($module, event, /, *args)\n\
+sys.audit
---\n\
+
-\n\
+    event: str
-Passes the event to any audit hooks that are attached.");
+    /
+    *args: tuple
+
+Passes the event to any audit hooks that are attached.
+[clinic start generated code]*/
 
 static PyObject *
-sys_audit(PyObject *self, PyObject *const *args, Py_ssize_t argc)
+sys_audit_impl(PyObject *module, const char *event, PyObject *args)
+/*[clinic end generated code: output=1d0fc82da768f49d input=ec3b688527945109]*/
 {
     PyThreadState *tstate = _PyThreadState_GET();
     _Py_EnsureTstateNotNULL(tstate);
 
-    if (argc == 0) {
-        _PyErr_SetString(tstate, PyExc_TypeError,
-                         "audit() missing 1 required positional argument: "
-                         "'event'");
-        return NULL;
-    }
-
-    assert(args[0] != NULL);
-
     if (!should_audit(tstate->interp)) {
         Py_RETURN_NONE;
     }
 
-    PyObject *auditEvent = args[0];
+    int res = _PySys_Audit(tstate, event, "O", args);
-    if (!auditEvent) {
-        _PyErr_SetString(tstate, PyExc_TypeError,
-                         "expected str for argument 'event'");
-        return NULL;
-    }
-    if (!PyUnicode_Check(auditEvent)) {
-        _PyErr_Format(tstate, PyExc_TypeError,
-                      "expected str for argument 'event', not %.200s",
-                      Py_TYPE(auditEvent)->tp_name);
-        return NULL;
-    }
-    const char *event = PyUnicode_AsUTF8(auditEvent);
-    if (!event) {
-        return NULL;
-    }
-
-    PyObject *auditArgs = _PyTuple_FromArray(args + 1, argc - 1);
-    if (!auditArgs) {
-        return NULL;
-    }
-
-    int res = _PySys_Audit(tstate, event, "O", auditArgs);
-    Py_DECREF(auditArgs);
-
     if (res < 0) {
         return NULL;
     }
@@ -2564,7 +2536,7 @@ close_and_release:
 static PyMethodDef sys_methods[] = {
     /* Might as well keep this in alphabetic order */
     SYS_ADDAUDITHOOK_METHODDEF
-    {"audit", _PyCFunction_CAST(sys_audit), METH_FASTCALL, audit_doc },
+    SYS_AUDIT_METHODDEF
     {"breakpointhook", _PyCFunction_CAST(sys_breakpointhook),
      METH_FASTCALL | METH_KEYWORDS, breakpointhook_doc},
     SYS__CLEAR_INTERNAL_CACHES_METHODDEF