| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * 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 <BpBinderFuzzFunctions.h> |
| #include <IBinderFuzzFunctions.h> |
| #include <commonFuzzHelpers.h> |
| #include <fuzzer/FuzzedDataProvider.h> |
| |
| #include <binder/BpBinder.h> |
| #include <binder/IServiceManager.h> |
| |
| namespace android { |
| |
| // Fuzzer entry point. |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { |
| FuzzedDataProvider fdp(data, size); |
| |
| // TODO: In the future it would be more effective to fork a new process and then pass a BBinder |
| // to your process. Right now this is not implemented because it would involved fuzzing IPC on a |
| // forked process, and libfuzzer will not be able to handle code coverage. This would lead to |
| // crashes that are not easy to diagnose. |
| int32_t handle = fdp.ConsumeIntegralInRange<int32_t>(0, 1024); |
| sp<BpBinder> bpbinder = BpBinder::create(handle); |
| if (bpbinder == nullptr) return 0; |
| |
| // To prevent memory from running out from calling too many add item operations. |
| const uint32_t MAX_RUNS = 2048; |
| uint32_t count = 0; |
| sp<IBinder::DeathRecipient> s_recipient = new FuzzDeathRecipient(); |
| |
| while (fdp.remaining_bytes() > 0 && count++ < MAX_RUNS) { |
| if (fdp.ConsumeBool()) { |
| callArbitraryFunction(&fdp, gBPBinderOperations, bpbinder, s_recipient); |
| } else { |
| callArbitraryFunction(&fdp, gIBinderOperations, bpbinder.get()); |
| } |
| } |
| |
| return 0; |
| } |
| } // namespace android |