81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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/*
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* Common code for the unified fuzzing interface
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*/
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#include <stdarg.h>
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#include <stdlib.h>
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#include "FuzzingInterface.h"
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namespace mozilla {
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#ifdef JS_STANDALONE
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MOZ_RUNINIT static bool fuzzing_verbose = !!getenv("MOZ_FUZZ_LOG");
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void fuzzing_log(const char* aFmt, ...) {
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if (fuzzing_verbose) {
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va_list ap;
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va_start(ap, aFmt);
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vfprintf(stderr, aFmt, ap);
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va_end(ap);
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}
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}
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#else
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LazyLogModule gFuzzingLog("nsFuzzing");
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#endif
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} // namespace mozilla
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#ifdef AFLFUZZ
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__attribute__((weak)) extern uint8_t* __afl_area_ptr;
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__attribute__((weak)) extern uint32_t __afl_map_size;
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__AFL_FUZZ_INIT();
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int afl_interface_raw(FuzzingTestFuncRaw testFunc) {
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char* testFilePtr = getenv("MOZ_FUZZ_TESTFILE");
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uint8_t* buf = NULL;
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if (testFilePtr) {
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std::string testFile(testFilePtr);
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while (__AFL_LOOP(1000)) {
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std::ifstream is;
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is.open(testFile, std::ios::binary);
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is.seekg(0, std::ios::end);
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size_t len = is.tellg();
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is.seekg(0, std::ios::beg);
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MOZ_RELEASE_ASSERT(len >= 0);
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if (!len) {
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is.close();
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continue;
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}
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buf = reinterpret_cast<uint8_t*>(realloc(buf, len));
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MOZ_RELEASE_ASSERT(buf);
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is.read(reinterpret_cast<char*>(buf), len);
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is.close();
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if (testFunc(buf, len)) {
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// this pattern is from the driver for
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// LLVMFuzzerTestOneInput in aflpp_driver.c
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memset(__afl_area_ptr, 0, __afl_map_size);
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__afl_area_ptr[0] = 1;
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}
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}
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} else {
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buf = __AFL_FUZZ_TESTCASE_BUF;
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while (__AFL_LOOP(1000)) {
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size_t len = __AFL_FUZZ_TESTCASE_LEN;
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if (testFunc(buf, len)) {
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// this pattern is from the driver for
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// LLVMFuzzerTestOneInput in aflpp_driver.c
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memset(__afl_area_ptr, 0, __afl_map_size);
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__afl_area_ptr[0] = 1;
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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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#endif // AFLFUZZ
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