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71 lines
2.1 KiB
71 lines
2.1 KiB
/*
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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 <fuzzer/FuzzedDataProvider.h>
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#include "osi/include/buffer.h"
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#define MAX_BUFFER_SIZE 4096
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#define MAX_NUM_SLICES 100
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, size_t Size) {
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// Init our wrapper
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FuzzedDataProvider dataProvider(Data, Size);
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// Create our buffer
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size_t buf_size =
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dataProvider.ConsumeIntegralInRange<size_t>(1, MAX_BUFFER_SIZE);
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buffer_t* buf = buffer_new(buf_size);
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// These functions require a non-null buffer, according to the header
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// The size also needs to be over 1 to make slices
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if (buf != nullptr && buf_size > 1) {
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std::vector<buffer_t*> slices;
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// Make a bunch of refs to various slices of the buffer
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size_t num_slices =
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dataProvider.ConsumeIntegralInRange<size_t>(0, MAX_NUM_SLICES);
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for (size_t i = 0; i < num_slices; i++) {
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// If slice_size is zero or GT buf_size, lib throws an exception
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size_t slice_size =
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dataProvider.ConsumeIntegralInRange<size_t>(1, buf_size - 1);
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if (slice_size > 0) {
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buffer_t* new_slice = nullptr;
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if (slice_size == buf_size) {
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new_slice = buffer_new_ref(buf);
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} else {
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new_slice = buffer_new_slice(buf, slice_size);
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}
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// Add the slice to our vector so we can free it later
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slices.push_back(new_slice);
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}
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}
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// Retrieve the buffer ptr
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buffer_ptr(buf);
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// Free the slices
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for (const auto& slice : slices) {
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buffer_free(slice);
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}
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}
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// Free the root buffer
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buffer_free(buf);
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return 0;
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}
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