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/*
 *
 * Copyright 2016 gRPC authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_FAKE_FAKE_CREDENTIALS_H
#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_FAKE_FAKE_CREDENTIALS_H

#include <grpc/support/port_platform.h>

#include "src/core/lib/security/credentials/credentials.h"

#define GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS \
  "grpc.fake_security.expected_targets"

/* -- Fake transport security credentials. -- */

/* Creates a fake transport security credentials object for testing. */
grpc_channel_credentials* grpc_fake_transport_security_credentials_create(void);

/* Creates a fake server transport security credentials object for testing. */
grpc_server_credentials* grpc_fake_transport_security_server_credentials_create(
    void);

/* Used to verify the target names given to the fake transport security
 * connector.
 *
 * The syntax of \a expected_targets by example:
 * For LB channels:
 *     "backend_target_1,backend_target_2,...;lb_target_1,lb_target_2,..."
 * For regular channels:
 *     "backend_taget_1,backend_target_2,..."
 *
 * That is to say, LB channels have a heading list of LB targets separated from
 * the list of backend targets by a semicolon. For non-LB channels, only the
 * latter is present. */
grpc_arg grpc_fake_transport_expected_targets_arg(char* expected_targets);

/* Return the value associated with the expected targets channel arg or NULL */
const char* grpc_fake_transport_get_expected_targets(
    const grpc_channel_args* args);

/* --  Metadata-only Test credentials. -- */

class grpc_md_only_test_credentials : public grpc_call_credentials {
 public:
  grpc_md_only_test_credentials(const char* md_key, const char* md_value,
                                bool is_async)
      : grpc_call_credentials(GRPC_CALL_CREDENTIALS_TYPE_OAUTH2),
        md_(grpc_mdelem_from_slices(grpc_slice_from_copied_string(md_key),
                                    grpc_slice_from_copied_string(md_value))),
        is_async_(is_async) {}
  ~grpc_md_only_test_credentials() override { GRPC_MDELEM_UNREF(md_); }

  bool get_request_metadata(grpc_polling_entity* pollent,
                            grpc_auth_metadata_context context,
                            grpc_credentials_mdelem_array* md_array,
                            grpc_closure* on_request_metadata,
                            grpc_error** error) override;

  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
                                   grpc_error* error) override;

 private:
  grpc_mdelem md_;
  bool is_async_;
};

#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_FAKE_FAKE_CREDENTIALS_H */