| // |
| // Copyright 2017 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/ext/filters/workarounds/workaround_utils.h" |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| |
| user_agent_parser ua_parser[GRPC_MAX_WORKAROUND_ID]; |
| |
| static void destroy_user_agent_md(void* user_agent_md) { |
| gpr_free(user_agent_md); |
| } |
| |
| grpc_workaround_user_agent_md* grpc_parse_user_agent(grpc_mdelem md) { |
| grpc_workaround_user_agent_md* user_agent_md = |
| static_cast<grpc_workaround_user_agent_md*>( |
| grpc_mdelem_get_user_data(md, destroy_user_agent_md)); |
| |
| if (nullptr != user_agent_md) { |
| return user_agent_md; |
| } |
| user_agent_md = static_cast<grpc_workaround_user_agent_md*>( |
| gpr_malloc(sizeof(grpc_workaround_user_agent_md))); |
| for (int i = 0; i < GRPC_MAX_WORKAROUND_ID; i++) { |
| if (ua_parser[i]) { |
| user_agent_md->workaround_active[i] = ua_parser[i](md); |
| } |
| } |
| grpc_mdelem_set_user_data(md, destroy_user_agent_md, (void*)user_agent_md); |
| |
| return user_agent_md; |
| } |
| |
| void grpc_register_workaround(uint32_t id, user_agent_parser parser) { |
| GPR_ASSERT(id < GRPC_MAX_WORKAROUND_ID); |
| ua_parser[id] = parser; |
| } |