| /* |
| * |
| * Copyright 2018 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 <string.h> |
| |
| #include <grpc/grpc.h> |
| #include <grpc/grpc_security.h> |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/string_util.h> |
| #include "test/core/util/fuzzer_util.h" |
| #include "test/core/util/memory_counters.h" |
| |
| #include "src/core/lib/gpr/env.h" |
| #include "src/core/lib/security/credentials/alts/alts_credentials.h" |
| #include "src/core/lib/security/credentials/alts/check_gcp_environment.h" |
| #include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h" |
| |
| using grpc_core::testing::grpc_fuzzer_get_next_byte; |
| using grpc_core::testing::grpc_fuzzer_get_next_string; |
| using grpc_core::testing::input_stream; |
| |
| // Logging |
| bool squelch = true; |
| bool leak_check = true; |
| |
| static void dont_log(gpr_log_func_args* args) {} |
| |
| // Add a random number of target service accounts to client options. |
| static void read_target_service_accounts( |
| input_stream* inp, grpc_alts_credentials_options* options) { |
| size_t n = grpc_fuzzer_get_next_byte(inp); |
| for (size_t i = 0; i < n; i++) { |
| char* service_account = grpc_fuzzer_get_next_string(inp, nullptr); |
| if (service_account != nullptr) { |
| grpc_alts_credentials_client_options_add_target_service_account( |
| options, service_account); |
| gpr_free(service_account); |
| } |
| } |
| // Added to improve code coverage. |
| grpc_alts_credentials_client_options_add_target_service_account(options, |
| nullptr); |
| grpc_alts_credentials_client_options_add_target_service_account( |
| nullptr, "this is service account"); |
| } |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { |
| char* grpc_trace_fuzzer = gpr_getenv("GRPC_TRACE_FUZZER"); |
| if (squelch && grpc_trace_fuzzer == nullptr) { |
| gpr_set_log_function(dont_log); |
| } |
| gpr_free(grpc_trace_fuzzer); |
| grpc_core::testing::LeakDetector leak_detector(leak_check); |
| input_stream inp = {data, data + size}; |
| grpc_init(); |
| bool is_on_gcp = grpc_alts_is_running_on_gcp(); |
| while (inp.cur != inp.end) { |
| bool enable_untrusted_alts = grpc_fuzzer_get_next_byte(&inp) & 0x01; |
| char* handshaker_service_url = |
| grpc_fuzzer_get_next_byte(&inp) & 0x01 |
| ? grpc_fuzzer_get_next_string(&inp, nullptr) |
| : nullptr; |
| if (grpc_fuzzer_get_next_byte(&inp) & 0x01) { |
| // Test ALTS channel credentials. |
| grpc_alts_credentials_options* options = |
| grpc_alts_credentials_client_options_create(); |
| read_target_service_accounts(&inp, options); |
| grpc_channel_credentials* cred = grpc_alts_credentials_create_customized( |
| options, handshaker_service_url, enable_untrusted_alts); |
| if (!enable_untrusted_alts && !is_on_gcp) { |
| GPR_ASSERT(cred == nullptr); |
| } else { |
| GPR_ASSERT(cred != nullptr); |
| } |
| grpc_channel_credentials_release(cred); |
| grpc_alts_credentials_options_destroy(options); |
| } else { |
| // Test ALTS server credentials. |
| grpc_alts_credentials_options* options = |
| grpc_alts_credentials_server_options_create(); |
| grpc_server_credentials* cred = |
| grpc_alts_server_credentials_create_customized( |
| options, handshaker_service_url, enable_untrusted_alts); |
| if (!enable_untrusted_alts && !is_on_gcp) { |
| GPR_ASSERT(cred == nullptr); |
| } else { |
| GPR_ASSERT(cred != nullptr); |
| } |
| grpc_server_credentials_release(cred); |
| grpc_alts_credentials_options_destroy(options); |
| } |
| gpr_free(handshaker_service_url); |
| } |
| grpc_shutdown(); |
| return 0; |
| } |