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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* Common code for the unified fuzzing interface
*/
#include <stdarg.h>
#include <stdlib.h>
#include "FuzzingInterface.h"
#include "mozilla/Attributes.h"
namespace mozilla {
#ifdef JS_STANDALONE
MOZ_RUNINIT static bool fuzzing_verbose = !!getenv("MOZ_FUZZ_LOG");
void fuzzing_log(const char* aFmt, ...) {
if (fuzzing_verbose) {
va_list ap;
va_start(ap, aFmt);
vfprintf(stderr, aFmt, ap);
va_end(ap);
}
}
#else
LazyLogModule gFuzzingLog("nsFuzzing");
#endif
} // namespace mozilla
#ifdef AFLFUZZ
__attribute__((weak)) extern uint8_t* __afl_area_ptr;
__attribute__((weak)) extern uint32_t __afl_map_size;
__AFL_FUZZ_INIT();
int afl_interface_raw(FuzzingTestFuncRaw testFunc) {
char* testFilePtr = getenv("MOZ_FUZZ_TESTFILE");
uint8_t* buf = NULL;
if (testFilePtr) {
std::string testFile(testFilePtr);
while (__AFL_LOOP(1000)) {
std::ifstream is;
is.open(testFile, std::ios::binary);
is.seekg(0, std::ios::end);
size_t len = is.tellg();
is.seekg(0, std::ios::beg);
MOZ_RELEASE_ASSERT(len >= 0);
if (!len) {
is.close();
continue;
}
buf = reinterpret_cast<uint8_t*>(realloc(buf, len));
MOZ_RELEASE_ASSERT(buf);
is.read(reinterpret_cast<char*>(buf), len);
is.close();
if (testFunc(buf, len)) {
// this pattern is from the driver for
// LLVMFuzzerTestOneInput in aflpp_driver.c
memset(__afl_area_ptr, 0, __afl_map_size);
__afl_area_ptr[0] = 1;
}
}
} else {
buf = __AFL_FUZZ_TESTCASE_BUF;
while (__AFL_LOOP(1000)) {
size_t len = __AFL_FUZZ_TESTCASE_LEN;
if (testFunc(buf, len)) {
// this pattern is from the driver for
// LLVMFuzzerTestOneInput in aflpp_driver.c
memset(__afl_area_ptr, 0, __afl_map_size);
__afl_area_ptr[0] = 1;
}
}
}
return 0;
}
#endif // AFLFUZZ
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