From a591c06b2f07f4523915cf0faf2943fad6ea0e25 Mon Sep 17 00:00:00 2001
From: zhengchao <zhengchao@iie.ac.cn>
Date: Fri, 3 Jun 2016 15:11:25 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BD=BF=E7=94=A8SFH=E8=BF=9B=E8=A1=8C?=
 =?UTF-8?q?=E6=91=98=E8=A6=81=E6=89=AB=E6=8F=8F=E6=97=B6=EF=BC=8C=E5=A2=9E?=
 =?UTF-8?q?=E5=8A=A0scanner=E4=B8=BA=E7=A9=BA=E7=9A=84=E5=88=A4=E6=96=AD?=
 =?UTF-8?q?=E3=80=82?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/entry/Maat_api.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/entry/Maat_api.cpp b/src/entry/Maat_api.cpp
index c963634..82e3bb5 100644
--- a/src/entry/Maat_api.cpp
+++ b/src/entry/Maat_api.cpp
@@ -1352,7 +1352,14 @@ int Maat_stream_scan_digest(stream_para_t * stream_para, const char * data, int
 	GIE_result_t query_result[MAX_SCANNER_HIT_NUM];
 	int hit_region_cnt=0,compile_ret=0;
 	_compile_result_t compile_result[rule_num];//dynamic array
-	//TODO: scanner ==NULL
+	if(data==NULL||data_len<=0)
+	{
+		return 0;
+	}
+	if(sp->feather->scanner==NULL)
+	{
+		return 0;
+	}
 	GIE_handle_t* GIE_handle=sp->feather->scanner->digest_handle[sp->table_id];
 	unsigned long long digest_len=0;
 	char* digest_buff=NULL;