| /* |
| * |
| * 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/grpc.h> |
| |
| #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h" |
| #include "src/core/lib/iomgr/executor.h" |
| #include "src/core/lib/security/credentials/credentials.h" |
| #include "src/core/lib/slice/slice_internal.h" |
| #include "src/core/lib/surface/server.h" |
| #include "test/core/util/memory_counters.h" |
| #include "test/core/util/mock_endpoint.h" |
| |
| bool squelch = true; |
| bool leak_check = true; |
| |
| static void discard_write(grpc_slice slice) {} |
| |
| static void* tag(int n) { return (void*)static_cast<uintptr_t>(n); } |
| static int detag(void* p) { return static_cast<int>((uintptr_t)p); } |
| |
| static void dont_log(gpr_log_func_args* args) {} |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { |
| grpc_test_only_set_slice_hash_seed(0); |
| if (squelch) gpr_set_log_function(dont_log); |
| grpc_core::testing::LeakDetector leak_detector(leak_check); |
| grpc_init(); |
| grpc_test_only_control_plane_credentials_force_init(); |
| { |
| grpc_core::ExecCtx exec_ctx; |
| grpc_core::Executor::SetThreadingAll(false); |
| |
| grpc_resource_quota* resource_quota = |
| grpc_resource_quota_create("server_fuzzer"); |
| grpc_endpoint* mock_endpoint = |
| grpc_mock_endpoint_create(discard_write, resource_quota); |
| grpc_resource_quota_unref_internal(resource_quota); |
| grpc_mock_endpoint_put_read( |
| mock_endpoint, grpc_slice_from_copied_buffer((const char*)data, size)); |
| |
| grpc_server* server = grpc_server_create(nullptr, nullptr); |
| grpc_completion_queue* cq = grpc_completion_queue_create_for_next(nullptr); |
| grpc_server_register_completion_queue(server, cq, nullptr); |
| // TODO(ctiller): add registered methods (one for POST, one for PUT) |
| // void *registered_method = |
| // grpc_server_register_method(server, "/reg", NULL, 0); |
| grpc_server_start(server); |
| grpc_transport* transport = |
| grpc_create_chttp2_transport(nullptr, mock_endpoint, false); |
| grpc_server_setup_transport(server, transport, nullptr, nullptr, nullptr); |
| grpc_chttp2_transport_start_reading(transport, nullptr, nullptr); |
| |
| grpc_call* call1 = nullptr; |
| grpc_call_details call_details1; |
| grpc_metadata_array request_metadata1; |
| grpc_call_details_init(&call_details1); |
| grpc_metadata_array_init(&request_metadata1); |
| int requested_calls = 0; |
| |
| GPR_ASSERT(GRPC_CALL_OK == |
| grpc_server_request_call(server, &call1, &call_details1, |
| &request_metadata1, cq, cq, tag(1))); |
| requested_calls++; |
| |
| grpc_event ev; |
| while (1) { |
| grpc_core::ExecCtx::Get()->Flush(); |
| ev = grpc_completion_queue_next(cq, gpr_inf_past(GPR_CLOCK_REALTIME), |
| nullptr); |
| switch (ev.type) { |
| case GRPC_QUEUE_TIMEOUT: |
| goto done; |
| case GRPC_QUEUE_SHUTDOWN: |
| break; |
| case GRPC_OP_COMPLETE: |
| switch (detag(ev.tag)) { |
| case 1: |
| requested_calls--; |
| // TODO(ctiller): keep reading that call! |
| break; |
| } |
| } |
| } |
| |
| done: |
| if (call1 != nullptr) grpc_call_unref(call1); |
| grpc_call_details_destroy(&call_details1); |
| grpc_metadata_array_destroy(&request_metadata1); |
| grpc_server_shutdown_and_notify(server, cq, tag(0xdead)); |
| grpc_server_cancel_all_calls(server); |
| grpc_millis deadline = grpc_core::ExecCtx::Get()->Now() + 5000; |
| for (int i = 0; i <= requested_calls; i++) { |
| // A single grpc_completion_queue_next might not be sufficient for getting |
| // the tag from shutdown, because we might potentially get blocked by |
| // an operation happening on the timer thread. |
| // For example, the deadline timer might expire, leading to the timer |
| // thread trying to cancel the RPC and thereby acquiring a few references |
| // to the call. This will prevent the shutdown to complete till the timer |
| // thread releases those references. |
| // As a solution, we are going to keep performing a cq_next for a |
| // liberal period of 5 seconds for the timer thread to complete its work. |
| do { |
| ev = grpc_completion_queue_next(cq, gpr_inf_past(GPR_CLOCK_REALTIME), |
| nullptr); |
| grpc_core::ExecCtx::Get()->InvalidateNow(); |
| } while (ev.type != GRPC_OP_COMPLETE && |
| grpc_core::ExecCtx::Get()->Now() < deadline); |
| GPR_ASSERT(ev.type == GRPC_OP_COMPLETE); |
| } |
| grpc_completion_queue_shutdown(cq); |
| for (int i = 0; i <= requested_calls; i++) { |
| do { |
| ev = grpc_completion_queue_next(cq, gpr_inf_past(GPR_CLOCK_REALTIME), |
| nullptr); |
| grpc_core::ExecCtx::Get()->InvalidateNow(); |
| } while (ev.type != GRPC_QUEUE_SHUTDOWN && |
| grpc_core::ExecCtx::Get()->Now() < deadline); |
| GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN); |
| } |
| grpc_server_destroy(server); |
| grpc_completion_queue_destroy(cq); |
| } |
| grpc_test_only_control_plane_credentials_destroy(); |
| grpc_shutdown(); |
| return 0; |
| } |