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/*
* Copyright 2022 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 <InputDevice.h>
#include <InputReaderBase.h>
#include <MapperHelpers.h>
#include <MultiTouchInputMapper.h>
namespace android {
const int32_t kMaxKeycodes = 100;
static void addProperty(FuzzEventHub& eventHub, std::shared_ptr<ThreadSafeFuzzedDataProvider> fdp) {
// Pick a random property to set for the mapper to have set.
fdp->PickValueInArray<std::function<void()>>(
{[&]() -> void { eventHub.addProperty("touch.deviceType", "touchScreen"); },
[&]() -> void {
eventHub.addProperty("touch.deviceType", fdp->ConsumeRandomLengthString(8).data());
},
[&]() -> void {
eventHub.addProperty("touch.size.scale", fdp->ConsumeRandomLengthString(8).data());
},
[&]() -> void {
eventHub.addProperty("touch.size.bias", fdp->ConsumeRandomLengthString(8).data());
},
[&]() -> void {
eventHub.addProperty("touch.size.isSummed",
fdp->ConsumeRandomLengthString(8).data());
},
[&]() -> void {
eventHub.addProperty("touch.size.calibration",
fdp->ConsumeRandomLengthString(8).data());
},
[&]() -> void {
eventHub.addProperty("touch.pressure.scale",
fdp->ConsumeRandomLengthString(8).data());
},
[&]() -> void {
eventHub.addProperty("touch.size.calibration",
fdp->ConsumeBool() ? "diameter" : "area");
},
[&]() -> void {
eventHub.addProperty("touch.pressure.calibration",
fdp->ConsumeRandomLengthString(8).data());
}})();
}
extern "C" int LLVMFuzzerTestOneInput(uint8_t* data, size_t size) {
std::shared_ptr<ThreadSafeFuzzedDataProvider> fdp =
std::make_shared<ThreadSafeFuzzedDataProvider>(data, size);
// Create mocked objects to support the fuzzed input mapper.
std::shared_ptr<FuzzEventHub> eventHub = std::make_shared<FuzzEventHub>(fdp);
FuzzInputReaderContext context(eventHub, fdp);
InputDevice device = getFuzzedInputDevice(*fdp, &context);
InputReaderConfiguration policyConfig;
MultiTouchInputMapper& mapper =
getMapperForDevice<ThreadSafeFuzzedDataProvider, MultiTouchInputMapper>(*fdp.get(),
device,
policyConfig);
// Loop through mapper operations until randomness is exhausted.
while (fdp->remaining_bytes() > 0) {
fdp->PickValueInArray<std::function<void()>>({
[&]() -> void {
addProperty(*eventHub.get(), fdp);
configureAndResetDevice(*fdp, device);
},
[&]() -> void {
std::string dump;
mapper.dump(dump);
},
[&]() -> void {
InputDeviceInfo info;
mapper.populateDeviceInfo(info);
},
[&]() -> void { mapper.getSources(); },
[&]() -> void {
std::list<NotifyArgs> unused =
mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig,
InputReaderConfiguration::Change(
fdp->ConsumeIntegral<uint32_t>()));
},
[&]() -> void {
std::list<NotifyArgs> unused = mapper.reset(fdp->ConsumeIntegral<nsecs_t>());
},
[&]() -> void {
RawEvent rawEvent = getFuzzedRawEvent(*fdp);
std::list<NotifyArgs> unused = mapper.process(&rawEvent);
},
[&]() -> void {
mapper.getKeyCodeState(fdp->ConsumeIntegral<uint32_t>(),
fdp->ConsumeIntegral<int32_t>());
},
[&]() -> void {
mapper.getScanCodeState(fdp->ConsumeIntegral<uint32_t>(),
fdp->ConsumeIntegral<int32_t>());
},
[&]() -> void {
std::vector<int32_t> keyCodes;
int32_t numBytes = fdp->ConsumeIntegralInRange<int32_t>(0, kMaxKeycodes);
for (int32_t i = 0; i < numBytes; ++i) {
keyCodes.push_back(fdp->ConsumeIntegral<int32_t>());
}
mapper.markSupportedKeyCodes(fdp->ConsumeIntegral<uint32_t>(), keyCodes,
nullptr);
},
[&]() -> void {
std::list<NotifyArgs> unused =
mapper.cancelTouch(fdp->ConsumeIntegral<nsecs_t>(),
fdp->ConsumeIntegral<nsecs_t>());
},
[&]() -> void {
std::list<NotifyArgs> unused =
mapper.timeoutExpired(fdp->ConsumeIntegral<nsecs_t>());
},
[&]() -> void {
StylusState state{fdp->ConsumeIntegral<nsecs_t>(),
fdp->ConsumeFloatingPoint<float>(),
fdp->ConsumeIntegral<uint32_t>(), getFuzzedToolType(*fdp)};
std::list<NotifyArgs> unused = mapper.updateExternalStylusState(state);
},
[&]() -> void { mapper.getAssociatedDisplayId(); },
})();
}
return 0;
}
} // namespace android
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