1 // Copyright 2020 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include <cstddef> 16 17 #include <fuzzer/FuzzedDataProvider.h> 18 19 #include "spdlog/spdlog.h" 20 #include "spdlog/sinks/basic_file_sink.h" 21 #include "spdlog/cfg/argv.h" 22 #include "spdlog/cfg/env.h" 23 LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)24extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { 25 if (size == 0) { 26 return 0; 27 } 28 29 static std::shared_ptr<spdlog::logger> my_logger; 30 if (!my_logger.get()) { 31 my_logger = spdlog::basic_logger_mt("basic_logger", "/dev/null"); 32 spdlog::set_default_logger(my_logger); 33 } 34 35 FuzzedDataProvider stream(data, size); 36 37 std::vector<std::string> strings; 38 const unsigned char strsize = stream.ConsumeIntegral<unsigned char>(); 39 for(unsigned char i=0; i<strsize; i++){ 40 strings.push_back(stream.ConsumeRandomLengthString()); 41 } 42 std::vector<char*> argvv; argvv.reserve(strsize); 43 for(unsigned char i=0; i< strsize; ++i){ 44 argvv.push_back(const_cast<char*>(strings[i].c_str())); 45 } 46 47 if(strsize==0) return 0; 48 49 const char** argv = (const char**) &argvv[0]; 50 spdlog::cfg::load_env_levels(); 51 spdlog::cfg::load_argv_levels(strsize, argv); 52 spdlog::info(stream.ConsumeRemainingBytesAsString()); 53 54 return 0; 55 } 56