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75 lines
2.8 KiB
75 lines
2.8 KiB
4 months ago
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/*
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* Copyright 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <functional>
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#include "fuzzer/FuzzedDataProvider.h"
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#include "utils/LruCache.h"
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#include "utils/StrongPointer.h"
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typedef android::LruCache<size_t, size_t> FuzzCache;
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static constexpr uint32_t MAX_CACHE_ENTRIES = 800;
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class NoopRemovedCallback : public android::OnEntryRemoved<size_t, size_t> {
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public:
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void operator()(size_t&, size_t&) {
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// noop
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}
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};
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static NoopRemovedCallback callback;
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static const std::vector<std::function<void(FuzzedDataProvider*, FuzzCache*)>> operations = {
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[](FuzzedDataProvider*, FuzzCache* cache) -> void { cache->removeOldest(); },
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[](FuzzedDataProvider*, FuzzCache* cache) -> void { cache->peekOldestValue(); },
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[](FuzzedDataProvider*, FuzzCache* cache) -> void { cache->clear(); },
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[](FuzzedDataProvider*, FuzzCache* cache) -> void { cache->size(); },
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[](FuzzedDataProvider*, FuzzCache* cache) -> void {
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android::LruCache<size_t, size_t>::Iterator iter(*cache);
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while (iter.next()) {
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iter.key();
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iter.value();
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}
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},
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[](FuzzedDataProvider* dataProvider, FuzzCache* cache) -> void {
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size_t key = dataProvider->ConsumeIntegral<size_t>();
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size_t val = dataProvider->ConsumeIntegral<size_t>();
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cache->put(key, val);
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},
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[](FuzzedDataProvider* dataProvider, FuzzCache* cache) -> void {
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size_t key = dataProvider->ConsumeIntegral<size_t>();
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cache->get(key);
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},
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[](FuzzedDataProvider* dataProvider, FuzzCache* cache) -> void {
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size_t key = dataProvider->ConsumeIntegral<size_t>();
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cache->remove(key);
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},
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[](FuzzedDataProvider*, FuzzCache* cache) -> void {
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cache->setOnEntryRemovedListener(&callback);
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}};
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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FuzzedDataProvider dataProvider(data, size);
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FuzzCache cache(MAX_CACHE_ENTRIES);
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while (dataProvider.remaining_bytes() > 0) {
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uint8_t op = dataProvider.ConsumeIntegral<uint8_t>() % operations.size();
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operations[op](&dataProvider, &cache);
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}
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return 0;
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}
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