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Fuzzers: Use a single fuzzer to test all LibTextCodec encodings

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This commit replaces the 5 fuzzers that previously tested LibTextCodec
with a single fuzzer. We now rely on the fuzzer to generate the
encoding and separate it from the encoded data with a magic separator.
This increases the overall coverage of LibTextCodec and eliminates the
possibility of the same error being generated by multiple fuzzers.
This commit is contained in:
Tim Ledbetter 2023-11-05 19:24:59 +00:00 • committed by Andreas Kling
parent 7d717986de
commit e1099a1757
9 changed files with 47 additions and 105 deletions
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29
Meta/Lagom/Fuzzers/FuzzTextDecoder.cpp Normal file
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/*
* Copyright (c) 2021-2023, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTextCodec/Decoder.h>
#include <stddef.h>
#include <stdint.h>
extern "C" int LLVMFuzzerTestOneInput(uint8_t const* data, size_t size)
{
AK::set_debug_enabled(false);
static constexpr StringView MAGIC_SEPARATOR = "|DATA|"sv;
StringView data_string_view { data, size };
auto separator_index = data_string_view.find(MAGIC_SEPARATOR);
if (!separator_index.has_value())
return 0;
auto encoding = data_string_view.substring_view(0, separator_index.value());
auto encoded_data = data_string_view.substring_view(separator_index.value() + MAGIC_SEPARATOR.length());
auto decoder = TextCodec::decoder_for(encoding);
if (!decoder.has_value())
return 0;
(void)decoder->to_utf8(encoded_data);
return 0;
}