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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 <functional>
#include "fuzzer/FuzzedDataProvider.h"
#include "utils/LruCache.h"
#include "utils/StrongPointer.h"
typedef android::LruCache<size_t, size_t> FuzzCache;
static constexpr uint32_t MAX_CACHE_ENTRIES = 800;
class NoopRemovedCallback : public android::OnEntryRemoved<size_t, size_t> {
public:
void operator()(size_t&, size_t&) {
// noop
}
};
static NoopRemovedCallback callback;
static const std::vector<std::function<void(FuzzedDataProvider*, FuzzCache*)>> operations = {
[](FuzzedDataProvider*, FuzzCache* cache) -> void { cache->removeOldest(); },
[](FuzzedDataProvider*, FuzzCache* cache) -> void { cache->peekOldestValue(); },
[](FuzzedDataProvider*, FuzzCache* cache) -> void { cache->clear(); },
[](FuzzedDataProvider*, FuzzCache* cache) -> void { cache->size(); },
[](FuzzedDataProvider*, FuzzCache* cache) -> void {
android::LruCache<size_t, size_t>::Iterator iter(*cache);
while (iter.next()) {
iter.key();
iter.value();
}
},
[](FuzzedDataProvider* dataProvider, FuzzCache* cache) -> void {
size_t key = dataProvider->ConsumeIntegral<size_t>();
size_t val = dataProvider->ConsumeIntegral<size_t>();
cache->put(key, val);
},
[](FuzzedDataProvider* dataProvider, FuzzCache* cache) -> void {
size_t key = dataProvider->ConsumeIntegral<size_t>();
cache->get(key);
},
[](FuzzedDataProvider* dataProvider, FuzzCache* cache) -> void {
size_t key = dataProvider->ConsumeIntegral<size_t>();
cache->remove(key);
},
[](FuzzedDataProvider*, FuzzCache* cache) -> void {
cache->setOnEntryRemovedListener(&callback);
}};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider dataProvider(data, size);
FuzzCache cache(MAX_CACHE_ENTRIES);
while (dataProvider.remaining_bytes() > 0) {
uint8_t op = dataProvider.ConsumeIntegral<uint8_t>() % operations.size();
operations[op](&dataProvider, &cache);
}
return 0;
}
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