73 lines
2.3 KiB
C++
73 lines
2.3 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 <commonFuzzHelpers.h>
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#include <fuzzer/FuzzedDataProvider.h>
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#include <string>
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#include <vector>
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#include "BufferedTextOutput.h"
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namespace android {
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class FuzzBufferedTextOutput : public BufferedTextOutput {
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public:
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FuzzBufferedTextOutput(uint32_t flags) : BufferedTextOutput(flags) {}
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virtual status_t writeLines(const struct iovec& buf, size_t) {
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size_t len = buf.iov_len;
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void* tmp_buf = malloc(len);
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if (tmp_buf == NULL) {
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return status_t();
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}
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// This will attempt to read data from iov_base to ensure valid params were passed.
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memcpy(tmp_buf, buf.iov_base, len);
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free(tmp_buf);
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return status_t();
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}
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};
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// Fuzzer entry point.
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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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uint32_t flags = fdp.ConsumeIntegral<uint32_t>();
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size_t push_count = 0;
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std::shared_ptr<BufferedTextOutput> bTextOutput(new FuzzBufferedTextOutput(flags));
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while (fdp.remaining_bytes() > 0) {
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fdp.PickValueInArray<std::function<void()>>({
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[&]() -> void {
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bTextOutput->pushBundle();
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push_count++;
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},
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[&]() -> void {
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std::string txt = fdp.ConsumeRandomLengthString(fdp.remaining_bytes());
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size_t len = fdp.ConsumeIntegralInRange<size_t>(0, txt.length());
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bTextOutput->print(txt.c_str(), len);
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},
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[&]() -> void {
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if (push_count == 0) return;
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bTextOutput->popBundle();
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push_count--;
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},
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})();
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}
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return 0;
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}
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} // namespace android
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