| // |
| // Copyright 2017, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| // |
| |
| #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 = |
| (grpc_workaround_user_agent_md *)grpc_mdelem_get_user_data( |
| md, destroy_user_agent_md); |
| |
| if (NULL != user_agent_md) { |
| return user_agent_md; |
| } |
| 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; |
| } |