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/*
*
* Copyright 2015-2016, 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 GRPCXX_SECURITY_AUTH_METADATA_PROCESSOR_H
#define GRPCXX_SECURITY_AUTH_METADATA_PROCESSOR_H
#include <map>
#include <grpc++/security/auth_context.h>
#include <grpc++/support/status.h>
#include <grpc++/support/string_ref.h>
namespace grpc {
class AuthMetadataProcessor {
public:
typedef std::multimap<grpc::string_ref, grpc::string_ref> InputMetadata;
typedef std::multimap<grpc::string, grpc::string> OutputMetadata;
virtual ~AuthMetadataProcessor() {}
// If this method returns true, the Process function will be scheduled in
// a different thread from the one processing the call.
virtual bool IsBlocking() const { return true; }
// context is read/write: it contains the properties of the channel peer and
// it is the job of the Process method to augment it with properties derived
// from the passed-in auth_metadata.
// consumed_auth_metadata needs to be filled with metadata that has been
// consumed by the processor and will be removed from the call.
// response_metadata is the metadata that will be sent as part of the
// response.
// If the return value is not Status::OK, the rpc call will be aborted with
// the error code and error message sent back to the client.
virtual Status Process(const InputMetadata& auth_metadata,
AuthContext* context,
OutputMetadata* consumed_auth_metadata,
OutputMetadata* response_metadata) = 0;
};
} // namespace grpc
#endif // GRPCXX_SECURITY_AUTH_METADATA_PROCESSOR_H
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