| /* |
| * Copyright (C) 2023 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 <hidl/HidlBinderSupport.h> |
| #include <libHidlBase_fuzzer_helper.h> |
| |
| constexpr size_t kMinByte = 0; |
| constexpr size_t kMaxByte = 256; |
| constexpr uint32_t kNumFds = 0; |
| constexpr uint32_t kNumInts = 1; |
| constexpr uint32_t kMinSize = 1; |
| constexpr uint32_t kMaxSize = 1000; |
| constexpr uint32_t kMax = 1024; |
| |
| class HidlBaseParcelFuzzer { |
| public: |
| HidlBaseParcelFuzzer(const uint8_t* data, size_t size) : mFdp(data, size){}; |
| void process(); |
| |
| private: |
| void createRandomParcel(Parcel& parcel); |
| |
| FuzzedDataProvider mFdp; |
| }; |
| |
| void HidlBaseParcelFuzzer::createRandomParcel(Parcel& parcel) { |
| uint32_t iterCount = mFdp.ConsumeIntegralInRange<uint32_t>(kMin, kMax); |
| for (uint32_t idx = 0; idx < iterCount; ++idx) { |
| auto invokeHidlBaseParcelWriteAPI = mFdp.PickValueInArray<const std::function<void()>>({ |
| [&]() { |
| hidl_memory memory; |
| native_handle_t* testNativeHandle = nullptr; |
| if (mFdp.ConsumeBool()) { |
| memory = createHidlMemory(mFdp); |
| } else { |
| hidl_string hidlString = createHidlString(mFdp); |
| testNativeHandle = native_handle_create( |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMin, NATIVE_HANDLE_MAX_FDS), |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMin, |
| NATIVE_HANDLE_MAX_INTS)); |
| memory = hidl_memory(hidlString, testNativeHandle, |
| mFdp.ConsumeIntegral<uint64_t>()); |
| } |
| writeEmbeddedToParcel( |
| memory, &parcel, |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize), |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize)); |
| native_handle_close(testNativeHandle); |
| native_handle_delete(testNativeHandle); |
| }, |
| [&]() { |
| MQDescriptorSync<uint8_t> descriptorSync; |
| auto testHandle = native_handle_create(kNumFds, kNumInts); |
| uint32_t size = sizeof(uint8_t); |
| testHandle->data[0] = size; |
| uint32_t bufferSize = mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize); |
| if (mFdp.ConsumeBool()) { |
| std::vector<GrantorDescriptor> grantDescriptor(bufferSize); |
| for (size_t idx = 0; idx < bufferSize; ++idx) { |
| grantDescriptor[idx] = {mFdp.ConsumeIntegral<uint32_t>() /* flags */, |
| mFdp.ConsumeIntegral<uint32_t>() /* fdIndex */, |
| mFdp.ConsumeIntegral<uint32_t>() /* offset */, |
| mFdp.ConsumeIntegral<uint64_t>() /* extent */}; |
| } |
| descriptorSync = |
| MQDescriptorSync<uint8_t>{grantDescriptor, testHandle, size}; |
| } else { |
| descriptorSync = MQDescriptorSync<uint8_t>{bufferSize, testHandle, size, |
| mFdp.ConsumeBool()}; |
| } |
| writeEmbeddedToParcel( |
| descriptorSync, &parcel, |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize), |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize)); |
| }, |
| [&]() { |
| native_handle_t* testNativeHandle = native_handle_create( |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMin, NATIVE_HANDLE_MAX_FDS), |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMin, NATIVE_HANDLE_MAX_INTS)); |
| writeEmbeddedToParcel( |
| testNativeHandle, &parcel, |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize), |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize)); |
| native_handle_close(testNativeHandle); |
| native_handle_delete(testNativeHandle); |
| }, |
| [&]() { |
| Status status = createStatus(mFdp); |
| writeToParcel(status, &parcel); |
| }, |
| [&]() { |
| auto parcelSize = mFdp.ConsumeIntegralInRange<size_t>(kMinByte, kMaxByte); |
| std::vector<uint8_t> data = mFdp.ConsumeBytes<uint8_t>(parcelSize); |
| parcel.write(data.data(), data.size()); |
| }, |
| }); |
| invokeHidlBaseParcelWriteAPI(); |
| } |
| } |
| |
| void HidlBaseParcelFuzzer::process() { |
| Parcel parcel; |
| size_t originalPosition = parcel.dataPosition(); |
| createRandomParcel(parcel); |
| parcel.setDataPosition(originalPosition); |
| while (mFdp.remaining_bytes()) { |
| auto invokeHidlBaseParcelAPI = mFdp.PickValueInArray<const std::function<void()>>({ |
| [&]() { |
| hidl_memory memory = createHidlMemory(mFdp); |
| readEmbeddedFromParcel( |
| memory, parcel, |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize), |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize)); |
| }, |
| [&]() { |
| MQDescriptorSync<uint8_t> descriptorSync; |
| readEmbeddedFromParcel( |
| descriptorSync, parcel, |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize), |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize)); |
| }, |
| [&]() { |
| hidl_handle handle; |
| readEmbeddedFromParcel( |
| handle, parcel, |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize), |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize)); |
| }, |
| [&]() { |
| hidl_string hidlString = createHidlString(mFdp); |
| readEmbeddedFromParcel( |
| hidlString, parcel, |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize), |
| mFdp.ConsumeIntegralInRange<uint32_t>(kMinSize, kMaxSize)); |
| }, |
| [&]() { |
| Status status = createStatus(mFdp); |
| readFromParcel(&status, parcel); |
| }, |
| }); |
| invokeHidlBaseParcelAPI(); |
| } |
| } |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { |
| HidlBaseParcelFuzzer hidlBaseParcelFuzzer(data, size); |
| hidlBaseParcelFuzzer.process(); |
| return 0; |
| } |