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+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_ADAPTER_H
+#define GRPC_CORE_TSI_TRANSPORT_SECURITY_ADAPTER_H
+
+#include "src/core/tsi/transport_security_interface.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Create a tsi handshaker that takes an implementation of old interface and
+ converts into an implementation of new interface. In the old interface,
+ there are get_bytes_to_send_to_peer, process_bytes_from_peer, get_result,
+ extract_peer, and create_frame_protector. In the new interface, only next
+ method is needed. See transport_security_interface.h for details. Note that
+ this tsi adapter handshaker is temporary. It will be removed once TSI has
+ been fully migrated to the new interface.
+ Ownership of input tsi_handshaker is transferred to this new adapter. */
+tsi_handshaker *tsi_create_adapter_handshaker(tsi_handshaker *wrapped);
+
+/* Given a tsi adapter handshaker, return the original wrapped handshaker. The
+ adapter still owns the wrapped handshaker which should not be destroyed by
+ the caller. */
+tsi_handshaker *tsi_adapter_handshaker_get_wrapped(tsi_handshaker *adapter);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_ADAPTER_H */