1 files changed, 67 insertions, 0 deletions
diff --git a/lib/hello_ext_lib.h b/lib/hello_ext_lib.h
new file mode 100644
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--- /dev/null
+++ b/lib/hello_ext_lib.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2017 Red Hat, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * The GnuTLS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef GNUTLS_LIB_HELLO_EXT_LIB_H
+#define GNUTLS_LIB_HELLO_EXT_LIB_H
+
+#include <gnutls/gnutls.h>
+#include "hello_ext.h"
+
+/* Functions to use at the send() or recv() extension function to temporarily
+ * store and retrieve data related to the extension.
+ */
+int
+_gnutls_hello_ext_set_datum(gnutls_session_t session,
+			    extensions_t id, const gnutls_datum_t *data);
+int
+_gnutls_hello_ext_get_datum(gnutls_session_t session,
+			    extensions_t id, gnutls_datum_t *data /* constant contents */);
+
+int
+_gnutls_hello_ext_get_resumed_datum(gnutls_session_t session,
+				    extensions_t id, gnutls_datum_t *data /* constant contents */);
+
+/* clear up any set data for the extension */
+#if 0 /* defined in hello_ext.h */
+void
+_gnutls_hello_ext_unset_priv(gnutls_session_t session,
+                              extensions_t id);
+#endif
+
+/* Function that will deinitialize the temporal data. Must be set
+ * as the deinit_func in the hello_ext_entry_st if the functions above
+ * are used.
+ */
+void _gnutls_hello_ext_default_deinit(gnutls_ext_priv_data_t priv);
+
+/* Functions to pack and unpack data if they need to be stored at
+ * session resumption data. Must be set as the pack_func and unpack_func
+ * of hello_ext_entry_st if the set and get functions above are used,
+ * and data must be accessible on resumed sessions.
+ */
+int
+_gnutls_hello_ext_default_pack(gnutls_ext_priv_data_t epriv, gnutls_buffer_st *ps);
+
+int
+_gnutls_hello_ext_default_unpack(gnutls_buffer_st *ps, gnutls_ext_priv_data_t *epriv);
+
+#endif /* GNUTLS_LIB_HELLO_EXT_LIB_H */