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71 lines
2.3 KiB
71 lines
2.3 KiB
// Copyright 2020 Google LLC
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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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#include <cstddef>
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#include <fuzzer/FuzzedDataProvider.h>
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#include "spdlog/spdlog.h"
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#include "spdlog/sinks/basic_file_sink.h"
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#include "spdlog/pattern_formatter.h"
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std::string my_formatter_txt = "custom-flag";
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class my_formatter_flag : public spdlog::custom_flag_formatter
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{
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public:
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void format(const spdlog::details::log_msg &, const std::tm &, spdlog::memory_buf_t &dest) override
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{
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dest.append(my_formatter_txt.data(), my_formatter_txt.data() + my_formatter_txt.size());
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}
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std::unique_ptr<custom_flag_formatter> clone() const override
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{
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return spdlog::details::make_unique<my_formatter_flag>();
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}
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};
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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if (size == 0) {
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return 0;
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}
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static std::shared_ptr<spdlog::logger> my_logger;
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if (!my_logger.get()) {
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my_logger = spdlog::basic_logger_mt("basic_logger", "/dev/null");
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spdlog::set_default_logger(my_logger);
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}
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FuzzedDataProvider stream(data, size);
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const unsigned long size_arg = stream.ConsumeIntegral<unsigned long>();
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const unsigned long int_arg = stream.ConsumeIntegral<unsigned long>();
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const char flag = (char)(stream.ConsumeIntegral<char>());
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const std::string pattern = stream.ConsumeRandomLengthString();
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my_formatter_txt = stream.ConsumeRandomLengthString();
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const std::string string_arg = stream.ConsumeRandomLengthString();
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const std::string format_string = stream.ConsumeRemainingBytesAsString();
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using spdlog::details::make_unique;
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auto formatter = make_unique<spdlog::pattern_formatter>();
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formatter->add_flag<my_formatter_flag>(flag).set_pattern(pattern);
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spdlog::set_formatter(std::move(formatter));
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spdlog::info(format_string.c_str(), size_arg, int_arg, string_arg);
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return 0;
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}
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