add bounds checking at storage buffer

diff --git a/src/xcnphandler.c b/src/xcnphandler.c
index 2b854ff..3f0fcf5 100755 (executable)
--- a/src/xcnphandler.c
+++ b/src/xcnphandler.c
@@ -115,6 +115,8 @@ int add_to_storage_buffer(void *data, char *src, int len)
 
        if (len <= 0)
                return -1;
+       if (len > HISTORY_QUEUE_ITEM_SIZE)
+               len = HISTORY_QUEUE_ITEM_SIZE;
 
        if (g_lastest_content != NULL)
                free(g_lastest_content);