[TD-6361]<fix> restrict UDF func name

src/client/src/tscSQLParser.c

@@ -432,7 +432,7 @@ int32_t readFromFile(char *name, uint32_t *len, void **buf) {
 
 
 int32_t handleUserDefinedFunc(SSqlObj* pSql, struct SSqlInfo* pInfo) {
-  const char *msg1 = "function name is too long";
+  const char *msg1 = "invalidate  function name";
   const char *msg2 = "path is too long";
   const char *msg3 = "invalid outputtype";
   const char *msg4 = "invalid script";
@@ -449,7 +449,10 @@ int32_t handleUserDefinedFunc(SSqlObj* pSql, struct SSqlInfo* pInfo) {
       }
 
       createInfo->name.z[createInfo->name.n] = 0;
-
+      // funcname's naming rule is same to column 
+      if (!validateColumnName(createInfo->name.z)) {
+        return  invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
+      }
       strdequote(createInfo->name.z);
 
       if (strlen(createInfo->name.z) >= TSDB_FUNC_NAME_LEN) {