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/*
* Copyright 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 <fuzzer/FuzzedDataProvider.h>
#include <utils/Log.h>
#include <utils/Vector.h>
#include <functional>
using android::Vector;
static constexpr uint16_t MAX_VEC_SIZE = 100;
static constexpr bool kLog = false;
struct NonTrivialDestructor {
NonTrivialDestructor() : mInit(1) {}
~NonTrivialDestructor() {
LOG_ALWAYS_FATAL_IF(mInit != 1, "mInit should be 1, but it's: %d", mInit);
mInit--;
LOG_ALWAYS_FATAL_IF(mInit != 0, "mInit should be 0, but it's: %d", mInit);
}
private:
uint8_t mInit;
};
template <typename T>
struct VectorFuzzerData {
Vector<T> vector;
const std::vector<std::function<void(FuzzedDataProvider&, Vector<T>&)>> funcs = {
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
// operator= Vector<TYPE>, still needs for SortedVector
if (kLog) ALOGI("operator=");
vector = testVector(provider);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("clear");
vector.clear();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("size");
vector.size();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("isEmpty");
vector.isEmpty();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("capacity");
vector.capacity();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
size_t vectorSize = provider.ConsumeIntegralInRange<size_t>(0, MAX_VEC_SIZE);
if (kLog) ALOGI("setCapacity");
vector.setCapacity(vectorSize);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
size_t vectorSize = provider.ConsumeIntegralInRange<size_t>(0, MAX_VEC_SIZE);
if (kLog) ALOGI("resize");
vector.resize(vectorSize);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("array");
vector.array();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("editArray");
vector.editArray();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
if (vector.size() == 0) return;
size_t idx = provider.ConsumeIntegralInRange<size_t>(0, vector.size() - 1);
if (kLog) ALOGI("operator[]");
vector[idx]; // returns a const value for Vector
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
if (vector.size() == 0) return;
size_t idx = provider.ConsumeIntegralInRange<size_t>(0, vector.size() - 1);
if (kLog) ALOGI("itemAt");
vector.itemAt(idx);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (vector.size() == 0) return;
if (kLog) ALOGI("top");
vector.top();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
if (vector.size() == 0) return;
size_t idx = provider.ConsumeIntegralInRange<size_t>(0, vector.size() - 1);
if (kLog) ALOGI("editItemAt");
vector.editItemAt(idx);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (vector.size() == 0) return;
if (kLog) ALOGI("editTop");
vector.editTop() = T{};
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
uint8_t idx = provider.ConsumeIntegralInRange<uint8_t>(0, vector.size());
Vector vec2 = testVector(provider);
if (vec2.size() == 0) return; // TODO: maybe we should support this?
if (kLog) ALOGI("insertVectorAt %d of size %zu", idx, vec2.size());
vector.insertVectorAt(vec2, idx);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
if (kLog) ALOGI("appendVector");
vector.appendVector(testVector(provider));
},
// TODO: insertArrayAt
// TODO: appendArray
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
uint8_t idx = provider.ConsumeIntegralInRange<uint8_t>(0, vector.size());
uint8_t numItems = provider.ConsumeIntegralInRange<uint8_t>(1, 100);
if (kLog) ALOGI("insertAt");
vector.insertAt(idx, numItems);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
uint8_t idx = provider.ConsumeIntegralInRange<uint8_t>(0, vector.size());
uint8_t numItems = provider.ConsumeIntegralInRange<uint8_t>(1, 100);
if (kLog) ALOGI("insertAt");
vector.insertAt(T{}, idx, numItems);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (vector.size() == 0) return;
if (kLog) ALOGI("pop");
vector.pop();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("push");
vector.push();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("add");
vector.add();
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("add");
vector.add(T{});
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
uint8_t idx = provider.ConsumeIntegralInRange<uint8_t>(0, vector.size() - 1);
if (kLog) ALOGI("replaceAt");
vector.replaceAt(idx);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
uint8_t idx = provider.ConsumeIntegralInRange<uint8_t>(0, vector.size() - 1);
if (kLog) ALOGI("replaceAt");
vector.replaceAt(T{}, idx);
},
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
if (vector.size() == 0) return;
uint8_t idx = provider.ConsumeIntegralInRange<uint8_t>(0, vector.size() - 1);
if (kLog) ALOGI("remoteItemsAt");
vector.removeItemsAt(idx); // TODO: different count
},
// removeAt is alias for removeItemsAt
// TODO: sort
[&](FuzzedDataProvider& provider, Vector<T>& vector) {
(void)provider;
if (kLog) ALOGI("getItemSize");
vector.getItemSize();
},
// TODO: iterators
};
Vector<T> testVector(FuzzedDataProvider& provider) {
Vector<T> vec;
size_t vectorSize = provider.ConsumeIntegralInRange<size_t>(0, MAX_VEC_SIZE);
return vec;
}
void fuzz(FuzzedDataProvider&& provider) {
while (provider.remaining_bytes()) {
size_t funcIdx = provider.ConsumeIntegralInRange<size_t>(0, funcs.size() - 1);
funcs[funcIdx](provider, vector);
}
}
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider provider(data, size);
provider.PickValueInArray<std::function<void()>>({
[&]() { VectorFuzzerData<uint8_t>().fuzz(std::move(provider)); },
[&]() { VectorFuzzerData<int32_t>().fuzz(std::move(provider)); },
[&]() { VectorFuzzerData<NonTrivialDestructor>().fuzz(std::move(provider)); },
})();
return 0;
}
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