aflpp driver cpp -> c

1 files changed, 0 insertions, 292 deletions

diff --git a/examples/aflpp_driver/aflpp_driver.cpp b/examples/aflpp_driver/aflpp_driver.cpp
deleted file mode 100644
index d6163bdf..00000000
--- a/examples/aflpp_driver/aflpp_driver.cpp
+++ /dev/null
@@ -1,292 +0,0 @@
-//===- afl_driver.cpp - a glue between AFL and libFuzzer --------*- C++ -* ===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//===----------------------------------------------------------------------===//
-
-/* This file allows to fuzz libFuzzer-style target functions
- (LLVMFuzzerTestOneInput) with AFL using AFL's persistent (in-process) mode.
-
-Usage:
-################################################################################
-cat << EOF > test_fuzzer.cc
-#include <stddef.h>
-#include <stdint.h>
-extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
-  if (size > 0 && data[0] == 'H')
-    if (size > 1 && data[1] == 'I')
-       if (size > 2 && data[2] == '!')
-       __builtin_trap();
-  return 0;
-}
-EOF
-# Build your target with -fsanitize-coverage=trace-pc-guard using fresh clang.
-clang -g -fsanitize-coverage=trace-pc-guard test_fuzzer.cc -c
-# Build afl-llvm-rt.o.c from the AFL distribution.
-clang -c -w $AFL_HOME/llvm_mode/afl-llvm-rt.o.c
-# Build this file, link it with afl-llvm-rt.o.o and the target code.
-clang++ afl_driver.cpp test_fuzzer.o afl-llvm-rt.o.o
-# Run AFL:
-rm -rf IN OUT; mkdir IN OUT; echo z > IN/z;
-$AFL_HOME/afl-fuzz -i IN -o OUT ./a.out
-################################################################################
-AFL_DRIVER_STDERR_DUPLICATE_FILENAME: Setting this *appends* stderr to the file
-specified. If the file does not exist, it is created. This is useful for getting
-stack traces (when using ASAN for example) or original error messages on hard
-to reproduce bugs. Note that any content written to stderr will be written to
-this file instead of stderr's usual location.
-
-AFL_DRIVER_CLOSE_FD_MASK: Similar to libFuzzer's -close_fd_mask behavior option.
-If 1, close stdout at startup. If 2 close stderr; if 3 close both.
-
-*/
-#include <assert.h>
-#include <errno.h>
-#include <stdarg.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <fstream>
-#include <iostream>
-#include <vector>
-
-#ifdef _DEBUG
-#include "hash.h"
-#endif
-
-// Platform detection. Copied from FuzzerInternal.h
-#ifdef __linux__
-#define LIBFUZZER_LINUX 1
-#define LIBFUZZER_APPLE 0
-#define LIBFUZZER_NETBSD 0
-#define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
-#elif __APPLE__
-#define LIBFUZZER_LINUX 0
-#define LIBFUZZER_APPLE 1
-#define LIBFUZZER_NETBSD 0
-#define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
-#elif __NetBSD__
-#define LIBFUZZER_LINUX 0
-#define LIBFUZZER_APPLE 0
-#define LIBFUZZER_NETBSD 1
-#define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
-#elif __FreeBSD__
-#define LIBFUZZER_LINUX 0
-#define LIBFUZZER_APPLE 0
-#define LIBFUZZER_NETBSD 0
-#define LIBFUZZER_FREEBSD 1
-#define LIBFUZZER_OPENBSD 0
-#elif __OpenBSD__
-#define LIBFUZZER_LINUX 0
-#define LIBFUZZER_APPLE 0
-#define LIBFUZZER_NETBSD 0
-#define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 1
-#else
-#error "Support for your platform has not been implemented"
-#endif
-
-int __afl_sharedmem_fuzzing = 1;
-extern unsigned int *__afl_fuzz_len;
-extern unsigned char *__afl_fuzz_ptr;
-
-// libFuzzer interface is thin, so we don't include any libFuzzer headers.
-extern "C" {
-int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
-__attribute__((weak)) int LLVMFuzzerInitialize(int *argc, char ***argv);
-}
-
-// Notify AFL about persistent mode.
-static volatile char AFL_PERSISTENT[] = "##SIG_AFL_PERSISTENT##";
-extern "C" int __afl_persistent_loop(unsigned int);
-static volatile char suppress_warning2 = AFL_PERSISTENT[0];
-
-// Notify AFL about deferred forkserver.
-static volatile char AFL_DEFER_FORKSVR[] = "##SIG_AFL_DEFER_FORKSRV##";
-extern "C" void __afl_manual_init();
-static volatile char suppress_warning1 = AFL_DEFER_FORKSVR[0];
-
-// Input buffer.
-static const size_t kMaxAflInputSize = 1 << 20;
-static uint8_t AflInputBuf[kMaxAflInputSize];
-
-// Use this optionally defined function to output sanitizer messages even if
-// user asks to close stderr.
-__attribute__((weak)) extern "C" void __sanitizer_set_report_fd(void *);
-
-// Keep track of where stderr content is being written to, so that
-// dup_and_close_stderr can use the correct one.
-static FILE *output_file = stderr;
-
-// Experimental feature to use afl_driver without AFL's deferred mode.
-// Needs to run before __afl_auto_init.
-__attribute__((constructor(0))) static void __decide_deferred_forkserver(void) {
-  if (getenv("AFL_DRIVER_DONT_DEFER")) {
-    if (unsetenv("__AFL_DEFER_FORKSRV")) {
-      perror("Failed to unset __AFL_DEFER_FORKSRV");
-      abort();
-    }
-  }
-}
-
-// If the user asks us to duplicate stderr, then do it.
-static void maybe_duplicate_stderr() {
-  char *stderr_duplicate_filename =
-      getenv("AFL_DRIVER_STDERR_DUPLICATE_FILENAME");
-
-  if (!stderr_duplicate_filename)
-    return;
-
-  FILE *stderr_duplicate_stream =
-      freopen(stderr_duplicate_filename, "a+", stderr);
-
-  if (!stderr_duplicate_stream) {
-    fprintf(
-        stderr,
-        "Failed to duplicate stderr to AFL_DRIVER_STDERR_DUPLICATE_FILENAME");
-    abort();
-  }
-  output_file = stderr_duplicate_stream;
-}
-
-// Most of these I/O functions were inspired by/copied from libFuzzer's code.
-static void discard_output(int fd) {
-  FILE *temp = fopen("/dev/null", "w");
-  if (!temp)
-    abort();
-  dup2(fileno(temp), fd);
-  fclose(temp);
-}
-
-static void close_stdout() { discard_output(STDOUT_FILENO); }
-
-// Prevent the targeted code from writing to "stderr" but allow sanitizers and
-// this driver to do so.
-static void dup_and_close_stderr() {
-  int output_fileno = fileno(output_file);
-  int output_fd = dup(output_fileno);
-  if (output_fd <= 0)
-    abort();
-  FILE *new_output_file = fdopen(output_fd, "w");
-  if (!new_output_file)
-    abort();
-  if (!__sanitizer_set_report_fd)
-    return;
-  __sanitizer_set_report_fd(reinterpret_cast<void *>(output_fd));
-  discard_output(output_fileno);
-}
-
-static void Printf(const char *Fmt, ...) {
-  va_list ap;
-  va_start(ap, Fmt);
-  vfprintf(output_file, Fmt, ap);
-  va_end(ap);
-  fflush(output_file);
-}
-
-// Close stdout and/or stderr if user asks for it.
-static void maybe_close_fd_mask() {
-  char *fd_mask_str = getenv("AFL_DRIVER_CLOSE_FD_MASK");
-  if (!fd_mask_str)
-    return;
-  int fd_mask = atoi(fd_mask_str);
-  if (fd_mask & 2)
-    dup_and_close_stderr();
-  if (fd_mask & 1)
-    close_stdout();
-}
-
-// Define LLVMFuzzerMutate to avoid link failures for targets that use it
-// with libFuzzer's LLVMFuzzerCustomMutator.
-extern "C" size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize) {
-  assert(false && "LLVMFuzzerMutate should not be called from afl_driver");
-  return 0;
-}
-
-// Execute any files provided as parameters.
-static int ExecuteFilesOnyByOne(int argc, char **argv) {
-  for (int i = 1; i < argc; i++) {
-    std::ifstream in(argv[i], std::ios::binary);
-    in.seekg(0, in.end);
-    size_t length = in.tellg();
-    in.seekg (0, in.beg);
-    std::cout << "Reading " << length << " bytes from " << argv[i] << std::endl;
-    // Allocate exactly length bytes so that we reliably catch buffer overflows.
-    std::vector<char> bytes(length);
-    in.read(bytes.data(), bytes.size());
-    assert(in);
-    LLVMFuzzerTestOneInput(reinterpret_cast<const uint8_t *>(bytes.data()),
-                           bytes.size());
-    std::cout << "Execution successful" << std::endl;
-  }
-  return 0;
-}
-
-int main(int argc, char **argv) {
-  Printf(
-      "======================= INFO =========================\n"
-      "This binary is built for AFL-fuzz.\n"
-      "To run the target function on individual input(s) execute this:\n"
-      "  %s < INPUT_FILE\n"
-      "or\n"
-      "  %s INPUT_FILE1 [INPUT_FILE2 ... ]\n"
-      "To fuzz with afl-fuzz execute this:\n"
-      "  afl-fuzz [afl-flags] %s [-N]\n"
-      "afl-fuzz will run N iterations before "
-      "re-spawning the process (default: 1000)\n"
-      "======================================================\n",
-          argv[0], argv[0], argv[0]);
-
-  maybe_duplicate_stderr();
-  maybe_close_fd_mask();
-  if (LLVMFuzzerInitialize)
-    LLVMFuzzerInitialize(&argc, &argv);
-  // Do any other expensive one-time initialization here.
-
-  uint8_t dummy_input[1] = {0};
-  int N = 100000;
-  if (argc == 2 && argv[1][0] == '-')
-      N = atoi(argv[1] + 1);
-  else if(argc == 2 && (N = atoi(argv[1])) > 0)
-      Printf("WARNING: using the deprecated call style `%s %d`\n", argv[0], N);
-  else if (argc > 1) {
-//    if (!getenv("AFL_DRIVER_DONT_DEFER")) {
-      __afl_sharedmem_fuzzing = 0;
-      __afl_manual_init();
-//    }
-    return ExecuteFilesOnyByOne(argc, argv);
-    exit(0);
-  }
-
-  assert(N > 0);
-
-//  if (!getenv("AFL_DRIVER_DONT_DEFER"))
-  __afl_manual_init();
-
-  // Call LLVMFuzzerTestOneInput here so that coverage caused by initialization
-  // on the first execution of LLVMFuzzerTestOneInput is ignored.
-  LLVMFuzzerTestOneInput(dummy_input, 1);
-
-  int num_runs = 0;
-  while (__afl_persistent_loop(N)) {
-#ifdef _DEBUG
-    fprintf(stderr, "CLIENT crc: %016llx len: %u\n", hash64(__afl_fuzz_ptr, *__afl_fuzz_len, 0xa5b35705), *__afl_fuzz_len);
-    fprintf(stderr, "RECV:");
-    for (int i = 0; i < *__afl_fuzz_len; i++)
-      fprintf(stderr, "%02x", __afl_fuzz_ptr[i]);
-    fprintf(stderr,"\n");
-#endif
-    if (*__afl_fuzz_len) {
-      num_runs++;
-      LLVMFuzzerTestOneInput(__afl_fuzz_ptr, *__afl_fuzz_len);
-    }
-  }
-  Printf("%s: successfully executed %d input(s)\n", argv[0], num_runs);
-}