84 lines
3.9 KiB
C++
84 lines
3.9 KiB
C++
/*
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* Copyright (C) 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 <memory>
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#include "fuzzer/FuzzedDataProvider.h"
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#include "keymaster/serializable.h"
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static constexpr uint16_t kMinBufferSize = 1;
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static constexpr uint16_t kMaxBufferSize = 2048;
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static constexpr uint16_t kMaxOperations = 1000;
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std::vector<std::function<void(keymaster::Buffer*, FuzzedDataProvider*)>> operations = {
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[](keymaster::Buffer* buf, FuzzedDataProvider*) -> void {
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// Just reading values, but there's some interesting
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// integer manipulation here.
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buf->begin();
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buf->end();
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},
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[](keymaster::Buffer* buf, FuzzedDataProvider*) -> void { buf->Clear(); },
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[](keymaster::Buffer* buf, FuzzedDataProvider* fdp) -> void {
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buf->reserve(fdp->ConsumeIntegralInRange<int>(kMinBufferSize, kMaxBufferSize));
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},
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[](keymaster::Buffer* buf, FuzzedDataProvider* fdp) -> void {
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buf->advance_write(fdp->ConsumeIntegral<int>());
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},
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[](keymaster::Buffer* buf, FuzzedDataProvider* fdp) -> void {
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buf->Reinitialize(fdp->ConsumeIntegralInRange<size_t>(kMinBufferSize, kMaxBufferSize));
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},
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[](keymaster::Buffer* buf, FuzzedDataProvider* fdp) -> void {
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size_t buf_size = fdp->ConsumeIntegralInRange<size_t>(kMinBufferSize, kMaxBufferSize);
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std::unique_ptr<uint8_t[]> in_buf = std::unique_ptr<uint8_t[]>(new uint8_t[buf_size]);
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buf->Reinitialize(in_buf.get(), buf_size);
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},
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[](keymaster::Buffer* buf, FuzzedDataProvider* fdp) -> void {
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uint16_t buf_size = fdp->ConsumeIntegralInRange<uint16_t>(kMinBufferSize, kMaxBufferSize);
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std::unique_ptr<uint8_t[]> in_buf = std::unique_ptr<uint8_t[]>(new uint8_t[buf_size]);
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const uint8_t* data_ptr = in_buf.get();
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int32_t end = fdp->ConsumeIntegralInRange<int32_t>(0, buf_size);
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buf->Deserialize(&data_ptr, data_ptr + end);
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},
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[](keymaster::Buffer* buf, FuzzedDataProvider* fdp) -> void {
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uint16_t buf_size = buf->SerializedSize();
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std::unique_ptr<uint8_t[]> out_buf = std::unique_ptr<uint8_t[]>(new uint8_t[buf_size]);
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int32_t end = fdp->ConsumeIntegralInRange<int32_t>(0, buf_size);
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buf->Serialize(out_buf.get(), out_buf.get() + end);
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},
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[](keymaster::Buffer* buf, FuzzedDataProvider* fdp) -> void {
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uint16_t buf_size = fdp->ConsumeIntegralInRange<uint16_t>(kMinBufferSize, kMaxBufferSize);
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std::vector<uint8_t> in_buf = fdp->ConsumeBytes<uint8_t>(buf_size);
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buf->write(in_buf.data(), fdp->ConsumeIntegralInRange<int16_t>(0, buf_size));
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},
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[](keymaster::Buffer* buf, FuzzedDataProvider* fdp) -> void {
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uint16_t buf_size = fdp->ConsumeIntegralInRange<uint16_t>(kMinBufferSize, kMaxBufferSize);
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std::unique_ptr<uint8_t[]> out = std::unique_ptr<uint8_t[]>(new uint8_t[buf_size]);
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buf->read(out.get(), fdp->ConsumeIntegralInRange<int16_t>(0, buf_size));
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}};
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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FuzzedDataProvider fdp(data, size);
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uint16_t buf_size = fdp.ConsumeIntegralInRange<uint16_t>(kMinBufferSize, kMaxBufferSize);
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keymaster::Buffer fuzzBuffer(buf_size);
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for (size_t i = 0; i < kMaxOperations && fdp.remaining_bytes() > 0; i++) {
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uint8_t op = fdp.ConsumeIntegralInRange<uint8_t>(0, operations.size() - 1);
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operations[op](&fuzzBuffer, &fdp);
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}
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return 0;
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}
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