| /* |
| * |
| * Copyright 2015 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 "test/core/bad_client/bad_client.h" |
| |
| #include <stdio.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/string_util.h> |
| #include <grpc/support/sync.h> |
| #include <grpc/support/thd.h> |
| |
| #include "src/core/ext/filters/http/server/http_server_filter.h" |
| #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h" |
| #include "src/core/lib/channel/channel_stack.h" |
| #include "src/core/lib/gpr/murmur_hash.h" |
| #include "src/core/lib/gpr/string.h" |
| #include "src/core/lib/iomgr/endpoint_pair.h" |
| #include "src/core/lib/slice/slice_internal.h" |
| #include "src/core/lib/surface/completion_queue.h" |
| #include "src/core/lib/surface/server.h" |
| #include "test/core/end2end/cq_verifier.h" |
| |
| #define MIN_HTTP2_FRAME_SIZE 9 |
| |
| /* Args to provide to thread running server side validator */ |
| typedef struct { |
| grpc_server* server; |
| grpc_completion_queue* cq; |
| grpc_bad_client_server_side_validator validator; |
| void* registered_method; |
| gpr_event done_thd; |
| } thd_args; |
| |
| /* Run the server side validator and set done_thd once done */ |
| static void thd_func(void* arg) { |
| thd_args* a = static_cast<thd_args*>(arg); |
| if (a->validator != nullptr) { |
| a->validator(a->server, a->cq, a->registered_method); |
| } |
| gpr_event_set(&a->done_thd, (void*)1); |
| } |
| |
| /* Sets the done_write event */ |
| static void set_done_write(void* arg, grpc_error* error) { |
| gpr_event* done_write = static_cast<gpr_event*>(arg); |
| gpr_event_set(done_write, (void*)1); |
| } |
| |
| static void server_setup_transport(void* ts, grpc_transport* transport) { |
| thd_args* a = static_cast<thd_args*>(ts); |
| grpc_core::ExecCtx exec_ctx; |
| grpc_server_setup_transport(a->server, transport, nullptr, |
| grpc_server_get_channel_args(a->server)); |
| } |
| |
| /* Sets the read_done event */ |
| static void set_read_done(void* arg, grpc_error* error) { |
| gpr_event* read_done = static_cast<gpr_event*>(arg); |
| gpr_event_set(read_done, (void*)1); |
| } |
| |
| /* shutdown client */ |
| static void shutdown_client(grpc_endpoint** client_fd) { |
| if (*client_fd != nullptr) { |
| grpc_endpoint_shutdown( |
| *client_fd, GRPC_ERROR_CREATE_FROM_STATIC_STRING("Forced Disconnect")); |
| grpc_endpoint_destroy(*client_fd); |
| grpc_core::ExecCtx::Get()->Flush(); |
| *client_fd = nullptr; |
| } |
| } |
| |
| /* Runs client side validator */ |
| void grpc_run_client_side_validator(grpc_bad_client_arg* arg, uint32_t flags, |
| grpc_endpoint_pair* sfd, |
| grpc_completion_queue* client_cq) { |
| char* hex; |
| gpr_event done_write; |
| if (arg->client_payload_length < 4 * 1024) { |
| hex = gpr_dump(arg->client_payload, arg->client_payload_length, |
| GPR_DUMP_HEX | GPR_DUMP_ASCII); |
| /* Add a debug log */ |
| gpr_log(GPR_INFO, "TEST: %s", hex); |
| gpr_free(hex); |
| } else { |
| gpr_log(GPR_INFO, "TEST: (%" PRIdPTR " byte long string)", |
| arg->client_payload_length); |
| } |
| |
| grpc_slice slice = grpc_slice_from_copied_buffer(arg->client_payload, |
| arg->client_payload_length); |
| grpc_slice_buffer outgoing; |
| grpc_closure done_write_closure; |
| gpr_event_init(&done_write); |
| |
| grpc_slice_buffer_init(&outgoing); |
| grpc_slice_buffer_add(&outgoing, slice); |
| GRPC_CLOSURE_INIT(&done_write_closure, set_done_write, &done_write, |
| grpc_schedule_on_exec_ctx); |
| |
| /* Write data */ |
| grpc_endpoint_write(sfd->client, &outgoing, &done_write_closure); |
| grpc_core::ExecCtx::Get()->Flush(); |
| |
| /* Await completion, unless the request is large and write may not finish |
| * before the peer shuts down. */ |
| if (!(flags & GRPC_BAD_CLIENT_LARGE_REQUEST)) { |
| GPR_ASSERT( |
| gpr_event_wait(&done_write, grpc_timeout_seconds_to_deadline(5))); |
| } |
| |
| if (flags & GRPC_BAD_CLIENT_DISCONNECT) { |
| shutdown_client(&sfd->client); |
| } |
| |
| if (sfd->client != nullptr) { |
| /* Validate client stream, if requested. */ |
| if (arg->client_validator != nullptr) { |
| gpr_timespec deadline = grpc_timeout_seconds_to_deadline(5); |
| grpc_slice_buffer incoming; |
| grpc_slice_buffer_init(&incoming); |
| /* We may need to do multiple reads to read the complete server |
| * response. */ |
| while (true) { |
| gpr_event read_done_event; |
| gpr_event_init(&read_done_event); |
| grpc_closure read_done_closure; |
| GRPC_CLOSURE_INIT(&read_done_closure, set_read_done, &read_done_event, |
| grpc_schedule_on_exec_ctx); |
| grpc_endpoint_read(sfd->client, &incoming, &read_done_closure); |
| grpc_core::ExecCtx::Get()->Flush(); |
| do { |
| GPR_ASSERT(gpr_time_cmp(deadline, gpr_now(deadline.clock_type)) > 0); |
| /* Perform a cq next just to provide a thread that can read incoming |
| bytes on the client fd */ |
| GPR_ASSERT(grpc_completion_queue_next( |
| client_cq, grpc_timeout_milliseconds_to_deadline(100), |
| nullptr) |
| .type == GRPC_QUEUE_TIMEOUT); |
| } while (!gpr_event_get(&read_done_event)); |
| if (arg->client_validator(&incoming, arg->client_validator_arg)) break; |
| gpr_log(GPR_INFO, |
| "client validator failed; trying additional read " |
| "in case we didn't get all the data"); |
| } |
| grpc_slice_buffer_destroy_internal(&incoming); |
| } |
| grpc_core::ExecCtx::Get()->Flush(); |
| } |
| |
| /* If the request was too large, then we need to forcefully shut down the |
| * client, so that the write can be considered completed */ |
| if (flags & GRPC_BAD_CLIENT_LARGE_REQUEST) { |
| shutdown_client(&sfd->client); |
| } |
| |
| /* Make sure that the client is done writing */ |
| while (!gpr_event_get(&done_write)) { |
| GPR_ASSERT( |
| grpc_completion_queue_next( |
| client_cq, grpc_timeout_milliseconds_to_deadline(100), nullptr) |
| .type == GRPC_QUEUE_TIMEOUT); |
| } |
| |
| grpc_slice_buffer_destroy_internal(&outgoing); |
| grpc_core::ExecCtx::Get()->Flush(); |
| } |
| |
| void grpc_run_bad_client_test( |
| grpc_bad_client_server_side_validator server_validator, |
| grpc_bad_client_arg args[], int num_args, uint32_t flags) { |
| grpc_endpoint_pair sfd; |
| thd_args a; |
| grpc_transport* transport; |
| grpc_core::ExecCtx exec_ctx; |
| grpc_completion_queue* shutdown_cq; |
| grpc_completion_queue* client_cq; |
| |
| /* Init grpc */ |
| grpc_init(); |
| |
| /* Create endpoints */ |
| sfd = grpc_iomgr_create_endpoint_pair("fixture", nullptr); |
| |
| /* Create server, completion events */ |
| a.server = grpc_server_create(nullptr, nullptr); |
| a.cq = grpc_completion_queue_create_for_next(nullptr); |
| client_cq = grpc_completion_queue_create_for_next(nullptr); |
| |
| grpc_server_register_completion_queue(a.server, a.cq, nullptr); |
| a.registered_method = |
| grpc_server_register_method(a.server, GRPC_BAD_CLIENT_REGISTERED_METHOD, |
| GRPC_BAD_CLIENT_REGISTERED_HOST, |
| GRPC_SRM_PAYLOAD_READ_INITIAL_BYTE_BUFFER, 0); |
| grpc_server_start(a.server); |
| transport = grpc_create_chttp2_transport(nullptr, sfd.server, false); |
| server_setup_transport(&a, transport); |
| grpc_chttp2_transport_start_reading(transport, nullptr, nullptr); |
| |
| /* Bind fds to pollsets */ |
| grpc_endpoint_add_to_pollset(sfd.client, grpc_cq_pollset(client_cq)); |
| grpc_endpoint_add_to_pollset(sfd.server, grpc_cq_pollset(a.cq)); |
| |
| /* Check a ground truth */ |
| GPR_ASSERT(grpc_server_has_open_connections(a.server)); |
| |
| gpr_thd_id id; |
| gpr_event_init(&a.done_thd); |
| a.validator = server_validator; |
| /* Start validator */ |
| gpr_thd_new(&id, "grpc_bad_client", thd_func, &a, nullptr); |
| for (int i = 0; i < num_args; i++) { |
| grpc_run_client_side_validator(&args[i], i == (num_args - 1) ? flags : 0, |
| &sfd, client_cq); |
| } |
| /* Wait for server thread to finish */ |
| GPR_ASSERT(gpr_event_wait(&a.done_thd, grpc_timeout_seconds_to_deadline(1))); |
| |
| /* Shutdown. */ |
| shutdown_client(&sfd.client); |
| |
| shutdown_cq = grpc_completion_queue_create_for_pluck(nullptr); |
| grpc_server_shutdown_and_notify(a.server, shutdown_cq, nullptr); |
| GPR_ASSERT(grpc_completion_queue_pluck(shutdown_cq, nullptr, |
| grpc_timeout_seconds_to_deadline(1), |
| nullptr) |
| .type == GRPC_OP_COMPLETE); |
| grpc_completion_queue_destroy(shutdown_cq); |
| grpc_server_destroy(a.server); |
| grpc_completion_queue_destroy(a.cq); |
| grpc_completion_queue_destroy(client_cq); |
| grpc_shutdown(); |
| } |
| |
| bool client_connection_preface_validator(grpc_slice_buffer* incoming, |
| void* arg) { |
| if (incoming->count < 1) { |
| return false; |
| } |
| grpc_slice slice = incoming->slices[0]; |
| /* There should be atleast a settings frame present */ |
| if (GRPC_SLICE_LENGTH(slice) < MIN_HTTP2_FRAME_SIZE) { |
| return false; |
| } |
| const uint8_t* p = GRPC_SLICE_START_PTR(slice); |
| /* Check the frame type (SETTINGS) */ |
| if (*(p + 3) != 4) { |
| return false; |
| } |
| return true; |
| } |
| |
| /* connection preface and settings frame to be sent by the client */ |
| #define CONNECTION_PREFACE_FROM_CLIENT \ |
| "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" \ |
| "\x00\x00\x00\x04\x00\x00\x00\x00\x00" |
| |
| grpc_bad_client_arg connection_preface_arg = { |
| client_connection_preface_validator, nullptr, |
| CONNECTION_PREFACE_FROM_CLIENT, sizeof(CONNECTION_PREFACE_FROM_CLIENT) - 1}; |
| |
| bool rst_stream_client_validator(grpc_slice_buffer* incoming, void* arg) { |
| // Get last frame from incoming slice buffer. |
| grpc_slice_buffer last_frame_buffer; |
| grpc_slice_buffer_init(&last_frame_buffer); |
| grpc_slice_buffer_trim_end(incoming, 13, &last_frame_buffer); |
| GPR_ASSERT(last_frame_buffer.count == 1); |
| grpc_slice last_frame = last_frame_buffer.slices[0]; |
| |
| const uint8_t* p = GRPC_SLICE_START_PTR(last_frame); |
| bool success = |
| // Length == 4 |
| *p++ != 0 || *p++ != 0 || *p++ != 4 || |
| // Frame type (RST_STREAM) |
| *p++ != 3 || |
| // Flags |
| *p++ != 0 || |
| // Stream ID. |
| *p++ != 0 || *p++ != 0 || *p++ != 0 || *p++ != 1 || |
| // Payload (error code) |
| *p++ == 0 || *p++ == 0 || *p++ == 0 || *p == 0 || *p == 11; |
| |
| if (!success) { |
| gpr_log(GPR_INFO, "client expected RST_STREAM frame, not found"); |
| } |
| |
| grpc_slice_buffer_destroy(&last_frame_buffer); |
| return success; |
| } |
| |
| static void* tag(intptr_t t) { return (void*)t; } |
| |
| void server_verifier_request_call(grpc_server* server, |
| grpc_completion_queue* cq, |
| void* registered_method) { |
| grpc_call_error error; |
| grpc_call* s; |
| grpc_call_details call_details; |
| cq_verifier* cqv = cq_verifier_create(cq); |
| grpc_metadata_array request_metadata_recv; |
| |
| grpc_call_details_init(&call_details); |
| grpc_metadata_array_init(&request_metadata_recv); |
| |
| error = grpc_server_request_call(server, &s, &call_details, |
| &request_metadata_recv, cq, cq, tag(101)); |
| GPR_ASSERT(GRPC_CALL_OK == error); |
| CQ_EXPECT_COMPLETION(cqv, tag(101), 1); |
| cq_verify(cqv); |
| |
| GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.host, "localhost")); |
| GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo/bar")); |
| |
| grpc_metadata_array_destroy(&request_metadata_recv); |
| grpc_call_details_destroy(&call_details); |
| grpc_call_unref(s); |
| cq_verifier_destroy(cqv); |
| } |