| /* |
| * |
| * 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_PLUGIN_PLUGIN_CREDENTIALS_H |
| #define GRPC_CORE_LIB_SECURITY_CREDENTIALS_PLUGIN_PLUGIN_CREDENTIALS_H |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include "src/core/lib/security/credentials/credentials.h" |
| |
| extern grpc_core::TraceFlag grpc_plugin_credentials_trace; |
| |
| // This type is forward declared as a C struct and we cannot define it as a |
| // class. Otherwise, compiler will complain about type mismatch due to |
| // -Wmismatched-tags. |
| struct grpc_plugin_credentials final : public grpc_call_credentials { |
| public: |
| struct pending_request { |
| bool cancelled; |
| struct grpc_plugin_credentials* creds; |
| grpc_credentials_mdelem_array* md_array; |
| grpc_closure* on_request_metadata; |
| struct pending_request* prev; |
| struct pending_request* next; |
| }; |
| |
| explicit grpc_plugin_credentials(grpc_metadata_credentials_plugin plugin); |
| ~grpc_plugin_credentials() override; |
| |
| 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; |
| |
| // Checks if the request has been cancelled. |
| // If not, removes it from the pending list, so that it cannot be |
| // cancelled out from under us. |
| // When this returns, r->cancelled indicates whether the request was |
| // cancelled before completion. |
| void pending_request_complete(pending_request* r); |
| |
| private: |
| void pending_request_remove_locked(pending_request* pending_request); |
| |
| grpc_metadata_credentials_plugin plugin_; |
| gpr_mu mu_; |
| pending_request* pending_requests_ = nullptr; |
| }; |
| |
| #endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_PLUGIN_PLUGIN_CREDENTIALS_H */ |