From 34e84c0cd0b0752603aa0678410f59ef85abb62b Mon Sep 17 00:00:00 2001
From: chenkeyu <chenkeyu13@huawei.com>
Date: Sat, 2 Nov 2024 19:56:05 +0800
Subject: [PATCH] add ValidateReadData for ReadCString

Issue: https://gitee.com/openharmony/commonlibrary_c_utils/issues/IB1MW6?from=project-issue
Signed-off-by: chenkeyu <chenkeyu13@huawei.com>
---
 base/src/parcel.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/base/src/parcel.cpp b/base/src/parcel.cpp
index 64fcfc8..7fd2604 100644
--- a/base/src/parcel.cpp
+++ b/base/src/parcel.cpp
@@ -1098,6 +1098,9 @@ const char *Parcel::ReadCString()
     const char* eos = reinterpret_cast<const char*>(memchr(cstr, 0, avail));
     if (eos != nullptr) {
         const size_t dataLength = eos - cstr;
+        if (!ValidateReadData(dataLength + 1)) {
+            return nullptr;
+        }
         readCursor_ += (dataLength + 1);
         SkipBytes(GetPadSize(dataLength + 1));
         return cstr;
-- 
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