fix: reject duplicate data arg in update()

Author: ifduyue

src/_xxhash.c

@@ -572,6 +572,11 @@ static PyObject *PYXXH32_update(PYXXH32Object *self, PyObject *const *args,
 
     if (nargs >= 1) {
         arg = args[0];
+        if (kwnames && PyTuple_GET_SIZE(kwnames) > 0) {
+            PyErr_SetString(PyExc_TypeError,
+                "xxh32.update() got multiple values for argument 'data'");
+            return NULL;
+        }
     } else if (kwnames && PyTuple_GET_SIZE(kwnames) == 1 &&
                PyUnicode_CompareWithASCIIString(PyTuple_GET_ITEM(kwnames, 0), "data") == 0) {
         arg = args[0];
@@ -947,6 +952,11 @@ static PyObject *PYXXH64_update(PYXXH64Object *self, PyObject *const *args,
 
     if (nargs >= 1) {
         arg = args[0];
+        if (kwnames && PyTuple_GET_SIZE(kwnames) > 0) {
+            PyErr_SetString(PyExc_TypeError,
+                "xxh64.update() got multiple values for argument 'data'");
+            return NULL;
+        }
     } else if (kwnames && PyTuple_GET_SIZE(kwnames) == 1 &&
                PyUnicode_CompareWithASCIIString(PyTuple_GET_ITEM(kwnames, 0), "data") == 0) {
         arg = args[0];
@@ -1321,11 +1331,16 @@ static PyObject *PYXXH3_64_update(PYXXH3_64Object *self, PyObject *const *args,
 
     if (nargs >= 1) {
         arg = args[0];
+        if (kwnames && PyTuple_GET_SIZE(kwnames) > 0) {
+            PyErr_SetString(PyExc_TypeError,
+                "xxh3_64.update() got multiple values for argument 'data'");
+            return NULL;
+        }
     } else if (kwnames && PyTuple_GET_SIZE(kwnames) == 1 &&
                PyUnicode_CompareWithASCIIString(PyTuple_GET_ITEM(kwnames, 0), "data") == 0) {
         arg = args[0];
     } else {
-        PyErr_SetString(PyExc_TypeError, "xxhxxh364.update() missing required argument 'data'");
+        PyErr_SetString(PyExc_TypeError, "xxh3_64.update() missing required argument 'data'");
         return NULL;
     }
 
@@ -1704,11 +1719,16 @@ static PyObject *PYXXH3_128_update(PYXXH3_128Object *self, PyObject *const *args
 
     if (nargs >= 1) {
         arg = args[0];
+        if (kwnames && PyTuple_GET_SIZE(kwnames) > 0) {
+            PyErr_SetString(PyExc_TypeError,
+                "xxh3_128.update() got multiple values for argument 'data'");
+            return NULL;
+        }
     } else if (kwnames && PyTuple_GET_SIZE(kwnames) == 1 &&
                PyUnicode_CompareWithASCIIString(PyTuple_GET_ITEM(kwnames, 0), "data") == 0) {
         arg = args[0];
     } else {
-        PyErr_SetString(PyExc_TypeError, "xxhxxh3128.update() missing required argument 'data'");
+        PyErr_SetString(PyExc_TypeError, "xxh3_128.update() missing required argument 'data'");
         return NULL;
     }