session support get/set current packet

src/session/session.cpp

@@ -294,11 +294,19 @@ void session_set_s2c_1st_md(struct session *sess, struct metadata *md)
 
 struct metadata *session_get0_c2s_1st_md(struct session *sess)
 {
+    if (sess->c2s_1st_md.len == 0)
+    {
+        return NULL;
+    }
     return &sess->c2s_1st_md;
 }
 
 struct metadata *session_get0_s2c_1st_md(struct session *sess)
 {
+    if (sess->s2c_1st_md.len == 0)
+    {
+        return NULL;
+    }
     return &sess->s2c_1st_md;
 }
 
@@ -323,6 +331,36 @@ uint64_t session_get_last_time(struct session *sess)
     return sess->last_time;
 }
 
+/******************************************************************************
+ * session current packet
+ ******************************************************************************/
+
+// session current packet
+void session_set0_cur_pkt(struct session *sess, const struct packet *pkt)
+{
+    sess->cur_pkt = pkt;
+}
+
+struct packet *session_get0_cur_pkt(struct session *sess)
+{
+    return sess->cur_pkt;
+}
+
+// session current dir
+void session_set_cur_dir(struct session *sess, enum session_dir dir)
+{
+    sess->cur_dir = dir;
+}
+
+enum session_dir session_get_cur_dir(struct session *sess)
+{
+    return sess->cur_dir;
+}
+
+/******************************************************************************
+ * session event
+ ******************************************************************************/
+
 // session event
 bool session_push_event(struct session *sess, uint32_t event)
 {

src/session/session.h

@@ -64,9 +64,16 @@ struct session_key
     uint64_t security_zone;
 };
 
+enum session_dir
+{
+    SESSION_DIR_C2S = 0,
+    SESSION_DIR_S2C = 1,
+};
+
 struct metadata
 {
     char data[64]; // TODO
+    int len;
 };
 
 struct session;
@@ -121,7 +128,18 @@ void session_set_create_time(struct session *sess, uint64_t timestamp);
 void session_set_last_time(struct session *sess, uint64_t timestamp);
 uint64_t session_get_create_time(struct session *sess);
 uint64_t session_get_last_time(struct session *sess);
-uint64_t session_get_expire_time(struct session *sess);
+
+/******************************************************************************
+ * session current packet
+ ******************************************************************************/
+
+// session current packet
+void session_set0_cur_pkt(struct session *sess, const struct packet *pkt);
+struct packet *session_get0_cur_pkt(struct session *sess);
+
+// session current dir
+void session_set_cur_dir(struct session *sess, enum session_dir dir);
+enum session_dir session_get_cur_dir(struct session *sess);
 
 /******************************************************************************
  * session event

src/session/session_manager.cpp

@@ -168,7 +168,7 @@ void session_manager_set_session_eventcb(struct session_manager *mgr, session_ev
      mgr->arg = arg;
 }
 
-struct session *session_manager_find_sessions(struct session_manager *mgr, const struct packet *pkt)
+struct session *session_manager_find_session(struct session_manager *mgr, const struct packet *pkt)
 {
      struct session_key key;
      // TODO packet to key

src/session/session_private.h

@@ -49,6 +49,14 @@ struct session
     uint64_t create_time;
     uint64_t last_time;
 
+    /******************************
+     * Session Current Packet
+     ******************************/
+
+    // session current packet
+    struct packet *cur_pkt;
+    enum session_dir cur_dir;
+
     /******************************
      * Session Ev Queue Zone
      ******************************/