text: /*
   *
   * 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.
   *
   */
  
  #include <grpc/support/port_platform.h>
  
  #include "src/core/lib/security/credentials/fake/fake_credentials.h"
  
  #include <stdlib.h>
  
  #include <utility>
  
  #include "absl/strings/string_view.h"
  
  #include "src/core/lib/channel/channel_args.h"
  #include "src/core/lib/gprpp/ref_counted_ptr.h"
  #include "src/core/lib/promise/poll.h"
  #include "src/core/lib/promise/promise.h"
  #include "src/core/lib/security/security_connector/fake/fake_security_connector.h"
  #include "src/core/lib/security/security_connector/security_connector.h"
  #include "src/core/lib/transport/metadata_batch.h"
  
  /* -- Fake transport security credentials. -- */
  
  namespace {
  
  class grpc_fake_channel_credentials final : public grpc_channel_credentials {
   public:
    grpc_core::RefCountedPtr<grpc_channel_security_connector>
    create_security_connector(
        grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
        const char* target, const grpc_channel_args* args,
        grpc_channel_args** /*new_args*/) override {
      return grpc_fake_channel_security_connector_create(
          this->Ref(), std::move(call_creds), target, args);
    }
  
    grpc_core::UniqueTypeName type() const override {
      static grpc_core::UniqueTypeName::Factory kFactory("Fake");
      return kFactory.Create();
    }
  
   private:
    int cmp_impl(const grpc_channel_credentials* other) const override {
      // TODO(yashykt): Check if we can do something better here
      return grpc_core::QsortCompare(
          static_cast<const grpc_channel_credentials*>(this), other);
    }
  };
  
  class grpc_fake_server_credentials final : public grpc_server_credentials {
   public:
    grpc_core::RefCountedPtr<grpc_server_security_connector>
    create_security_connector(const grpc_channel_args* /*args*/) override {
      return grpc_fake_server_security_connector_create(this->Ref());
    }
  
    grpc_core::UniqueTypeName type() const override {
      static grpc_core::UniqueTypeName::Factory kFactory("Fake");
      return kFactory.Create();
    }
  };
  }  // namespace
  
  grpc_channel_credentials* grpc_fake_transport_security_credentials_create() {
    return new grpc_fake_channel_credentials();
  }
  
  grpc_server_credentials*
  grpc_fake_transport_security_server_credentials_create() {
    return new grpc_fake_server_credentials();
  }
  
  grpc_arg grpc_fake_transport_expected_targets_arg(char* expected_targets) {
    return grpc_channel_arg_string_create(
        const_cast<char*>(GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS),
        expected_targets);
  }
  
  const char* grpc_fake_transport_get_expected_targets(
      const grpc_channel_args* args) {
    const grpc_arg* expected_target_arg =
        grpc_channel_args_find(args, GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS);
    return grpc_channel_arg_get_string(expected_target_arg);
  }
  
  /* -- Metadata-only test credentials. -- */
  
  grpc_core::ArenaPromise<absl::StatusOr<grpc_core::ClientMetadataHandle>>
  grpc_md_only_test_credentials::GetRequestMetadata(
      grpc_core::ClientMetadataHandle initial_metadata,
      const grpc_call_credentials::GetRequestMetadataArgs*) {
    initial_metadata->Append(
        key_.as_string_view(), value_.Ref(),
        [](absl::string_view, const grpc_core::Slice&) { abort(); });
    return grpc_core::Immediate(std::move(initial_metadata));
  }
  
  grpc_core::UniqueTypeName grpc_md_only_test_credentials::Type() {
    static grpc_core::UniqueTypeName::Factory kFactory("MdOnlyTest");
    return kFactory.Create();
  }
  
  grpc_call_credentials* grpc_md_only_test_credentials_create(
      const char* md_key, const char* md_value) {
    return new grpc_md_only_test_credentials(md_key, md_value);
  }
  