server_name: Return the actual required buffer size if the buffer is too small

Since we require space for the null termination, include this in
the info returned if the caller provided a too small buffer.
Otherwise, if the caller allocated a buffer of exactly the suggested
size, it would still be too small.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>

diff --git a/lib/ext/server_name.c b/lib/ext/server_name.c
index 005d80b948754d48ae6cf65dcd8857e1eeba8a5e..520b69f5205b33e5a55b57544808a13078dcdc76 100644 (file)
--- a/lib/ext/server_name.c
+++ b/lib/ext/server_name.c
@@ -322,7 +322,7 @@ gnutls_server_name_get (gnutls_session_t session, void *data,
     }
   else
     {
-      *data_length = priv->server_names[indx].name_length;
+      *data_length = priv->server_names[indx].name_length + 1;
       return GNUTLS_E_SHORT_MEMORY_BUFFER;
     }