From 91d19e458d6e00e2b4c26b228acf1852c2ffd42c Mon Sep 17 00:00:00 2001
From: Shungang Li <sgli@taosdata.com>
Date: Thu, 5 Sep 2024 19:43:57 +0800
Subject: [PATCH] enh: error msg for csv file path that is too long

---
 source/libs/parser/src/parInsertSql.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/source/libs/parser/src/parInsertSql.c b/source/libs/parser/src/parInsertSql.c
index a8db514ee3..9412735ded 100644
--- a/source/libs/parser/src/parInsertSql.c
+++ b/source/libs/parser/src/parInsertSql.c
@@ -2254,10 +2254,16 @@ static int32_t parseDataFromFileImpl(SInsertParseContext* pCxt, SVnodeModifyOpSt
 
 static int32_t parseDataFromFile(SInsertParseContext* pCxt, SVnodeModifyOpStmt* pStmt, SToken* pFilePath,
                                  SRowsDataContext rowsDataCxt) {
-  char filePathStr[PATH_MAX] = {0};
+  char filePathStr[PATH_MAX + 16] = {0};
   if (TK_NK_STRING == pFilePath->type) {
     (void)trimString(pFilePath->z, pFilePath->n, filePathStr, sizeof(filePathStr));
+    if (strlen(filePathStr) >= PATH_MAX) {
+      return buildSyntaxErrMsg(&pCxt->msg, "file path is too long, max length is 4096", pFilePath->z);
+    }
   } else {
+    if (pFilePath->n >= PATH_MAX) {
+      return buildSyntaxErrMsg(&pCxt->msg, "file path is too long, max length is 4096", pFilePath->z);
+    }
     strncpy(filePathStr, pFilePath->z, pFilePath->n);
   }
   pStmt->fp = taosOpenFile(filePathStr, TD_FILE_READ | TD_FILE_STREAM);