text: /*
   *
   * Copyright 2015 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_UTIL_JSON_UTIL_H
  #define GRPC_CORE_LIB_SECURITY_UTIL_JSON_UTIL_H
  
  #include <grpc/support/port_platform.h>
  
  #include <stdbool.h>
  
  #include "src/core/lib/iomgr/error.h"
  #include "src/core/lib/json/json.h"
  
  // Constants.
  #define GRPC_AUTH_JSON_TYPE_INVALID "invalid"
  #define GRPC_AUTH_JSON_TYPE_SERVICE_ACCOUNT "service_account"
  #define GRPC_AUTH_JSON_TYPE_AUTHORIZED_USER "authorized_user"
  
  // Gets a child property from a json node.
  const char* grpc_json_get_string_property(const grpc_json* json,
                                            const char* prop_name,
                                            grpc_error** error);
  
  // Copies the value of the json child property specified by prop_name.
  // Returns false if the property was not found.
  bool grpc_copy_json_string_property(const grpc_json* json,
                                      const char* prop_name, char** copied_value);
  
  #endif /* GRPC_CORE_LIB_SECURITY_UTIL_JSON_UTIL_H */
  