mirror of
https://gitlab.isc.org/isc-projects/kea
synced 2025-08-22 01:49:48 +00:00
a96168e762
The solution is based on clusterfuzzlite, libfuzzer, and oss-fuzz technologies. - Add the .clusterfuzzlite directory. - Add the fuzz CI stage and fuzzing CI jobs. - Add the fuzzing targets in the fuzz directory. - Document fuzzing in doxygen.
77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
// Copyright (C) 2024 Internet Systems Consortium, Inc. ("ISC")
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#include <config.h>
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#include <fuzz.h>
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#include <log/logger_support.h>
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#include <process/daemon.h>
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#include <util/filesystem.h>
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#include <util/encode/encode.h>
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#include <cassert>
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#include <string>
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using namespace isc::process;
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using namespace isc::util::encode;
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using namespace isc::util::file;
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using namespace std;
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extern "C" {
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string KEA_LFC = isFile(KEA_LFC_INSTALLATION) ? KEA_LFC_INSTALLATION : KEA_LFC_SOURCES;
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// string KEA_FUZZ_DIR = isFile(KEA_FUZZ_DIR_INSTALLATION) ? KEA_FUZZ_DIR_INSTALLATION : KEA_FUZZ_DIR_SOURCES;
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TemporaryDirectory TEMP_DIR = TemporaryDirectory();
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string KEA_FUZZ_DIR = TEMP_DIR.dirName();
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bool
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DoInitialization() {
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LLVMFuzzerTearDown();
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// Spoof the logger just enough to not get LoggingNotInitialized thrown.
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// We explicitly don't want any logging during fuzzing for performance reasons.
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setenv("KEA_LOCKFILE_DIR", KEA_FUZZ_DIR.c_str(), 0);
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setenv("KEA_LFC_EXECUTABLE", "/bin/true", 0);
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if (!getenv("DEBUG")) {
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setenv("KEA_LOGGER_DESTINATION", "/dev/null", 0);
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}
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setenv("KEA_PIDFILE_DIR", KEA_FUZZ_DIR.c_str(), 0);
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if (!isc::log::isLoggingInitialized()) {
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isc::log::initLogger("fuzzer");
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Daemon::loggerInit("fuzzer", /* verbose = */ false);
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Daemon::setDefaultLoggerName("fuzzer");
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}
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return true;
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}
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void writeToFile(string const& file, string const& content) {
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// Create the config file.
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ofstream out(file, ios::out | ios::trunc);
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assert(out.is_open());
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out << content;
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out.close();
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assert(!out.is_open());
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}
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bool byteStreamToPacketData(uint8_t const* data, size_t size, vector<uint8_t>& byte_stream) {
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string str(data, data + size);
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if (!str.empty() && str.at(str.size() - 1) == '\n') {
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str = str.substr(0, str.size() - 1);
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}
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if (str.find_first_not_of("0123456789abcdefABCDEF") != string::npos) {
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return false;
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}
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if (str.size() % 2) {
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return false;
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}
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decodeHex(str, byte_stream);
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return true;
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}
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} // extern "C"
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