renamed examples/ to utils/

1 files changed, 0 insertions, 720 deletions

diff --git a/examples/afl_network_proxy/afl-network-server.c b/examples/afl_network_proxy/afl-network-server.c
deleted file mode 100644
index 513dc8f2..00000000
--- a/examples/afl_network_proxy/afl-network-server.c
+++ /dev/null
@@ -1,720 +0,0 @@
-/*
-   american fuzzy lop++ - network proxy server
-   -------------------------------------------
-
-   Originally written by Michal Zalewski
-
-   Forkserver design by Jann Horn <jannhorn@googlemail.com>
-
-   Now maintained by Marc Heuse <mh@mh-sec.de>,
-                        Heiko Eißfeldt <heiko.eissfeldt@hexco.de> and
-                        Andrea Fioraldi <andreafioraldi@gmail.com> and
-                        Dominik Maier <mail@dmnk.co>
-
-   Copyright 2016, 2017 Google Inc. All rights reserved.
-   Copyright 2019-2020 AFLplusplus Project. All rights reserved.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at:
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
- */
-
-#define AFL_MAIN
-
-#ifdef __ANDROID__
-  #include "android-ashmem.h"
-#endif
-
-#include "config.h"
-#include "types.h"
-#include "debug.h"
-#include "alloc-inl.h"
-#include "hash.h"
-#include "forkserver.h"
-#include "sharedmem.h"
-#include "common.h"
-
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <errno.h>
-#include <signal.h>
-#include <dirent.h>
-#include <fcntl.h>
-
-#include <sys/wait.h>
-#include <sys/time.h>
-#include <sys/shm.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/resource.h>
-#include <netinet/in.h>
-#include <netinet/ip6.h>
-#include <arpa/inet.h>
-#include <sys/mman.h>
-#include <sys/shm.h>
-#include <sys/socket.h>
-#include <netdb.h>
-
-#ifdef USE_DEFLATE
-  #include <libdeflate.h>
-struct libdeflate_compressor *  compressor;
-struct libdeflate_decompressor *decompressor;
-#endif
-
-static u8 *in_file,                    /* Minimizer input test case         */
-    *out_file;
-
-static u8 *in_data;                    /* Input data for trimming           */
-static u8 *buf2;
-
-static s32 in_len;
-static s32 buf2_len;
-static u32 map_size = MAP_SIZE;
-
-static volatile u8 stop_soon;          /* Ctrl-C pressed?                   */
-
-/* See if any bytes are set in the bitmap. */
-
-static inline u8 anything_set(afl_forkserver_t *fsrv) {
-
-  u32 *ptr = (u32 *)fsrv->trace_bits;
-  u32  i = (map_size >> 2);
-
-  while (i--) {
-
-    if (*(ptr++)) { return 1; }
-
-  }
-
-  return 0;
-
-}
-
-static void at_exit_handler(void) {
-
-  afl_fsrv_killall();
-
-}
-
-/* Write output file. */
-
-static s32 write_to_file(u8 *path, u8 *mem, u32 len) {
-
-  s32 ret;
-
-  unlink(path);                                            /* Ignore errors */
-
-  ret = open(path, O_RDWR | O_CREAT | O_EXCL, 0600);
-
-  if (ret < 0) { PFATAL("Unable to create '%s'", path); }
-
-  ck_write(ret, mem, len, path);
-
-  lseek(ret, 0, SEEK_SET);
-
-  return ret;
-
-}
-
-/* Execute target application. Returns 0 if the changes are a dud, or
-   1 if they should be kept. */
-
-static u8 run_target(afl_forkserver_t *fsrv, char **argv, u8 *mem, u32 len,
-                     u8 first_run) {
-
-  afl_fsrv_write_to_testcase(fsrv, mem, len);
-
-  fsrv_run_result_t ret =
-      afl_fsrv_run_target(fsrv, fsrv->exec_tmout, &stop_soon);
-
-  if (ret == FSRV_RUN_ERROR) { FATAL("Couldn't run child"); }
-
-  if (stop_soon) {
-
-    SAYF(cRST cLRD "\n+++ aborted by user +++\n" cRST);
-    exit(1);
-
-  }
-
-  return ret;
-
-}
-
-/* Handle Ctrl-C and the like. */
-
-static void handle_stop_sig(int sig) {
-
-  stop_soon = 1;
-  afl_fsrv_killall();
-
-}
-
-/* Do basic preparations - persistent fds, filenames, etc. */
-
-static void set_up_environment(afl_forkserver_t *fsrv) {
-
-  u8 *x;
-
-  fsrv->dev_null_fd = open("/dev/null", O_RDWR);
-  if (fsrv->dev_null_fd < 0) { PFATAL("Unable to open /dev/null"); }
-
-  if (!out_file) {
-
-    u8 *use_dir = ".";
-
-    if (access(use_dir, R_OK | W_OK | X_OK)) {
-
-      use_dir = get_afl_env("TMPDIR");
-      if (!use_dir) { use_dir = "/tmp"; }
-
-    }
-
-    out_file = alloc_printf("%s/.afl-input-temp-%u", use_dir, getpid());
-
-  }
-
-  unlink(out_file);
-
-  fsrv->out_fd = open(out_file, O_RDWR | O_CREAT | O_EXCL, 0600);
-
-  if (fsrv->out_fd < 0) { PFATAL("Unable to create '%s'", out_file); }
-
-  /* Set sane defaults... */
-
-  x = get_afl_env("ASAN_OPTIONS");
-
-  if (x) {
-
-    if (!strstr(x, "abort_on_error=1")) {
-
-      FATAL("Custom ASAN_OPTIONS set without abort_on_error=1 - please fix!");
-
-    }
-
-    if (!strstr(x, "symbolize=0")) {
-
-      FATAL("Custom ASAN_OPTIONS set without symbolize=0 - please fix!");
-
-    }
-
-  }
-
-  x = get_afl_env("MSAN_OPTIONS");
-
-  if (x) {
-
-    if (!strstr(x, "exit_code=" STRINGIFY(MSAN_ERROR))) {
-
-      FATAL("Custom MSAN_OPTIONS set without exit_code=" STRINGIFY(
-          MSAN_ERROR) " - please fix!");
-
-    }
-
-    if (!strstr(x, "symbolize=0")) {
-
-      FATAL("Custom MSAN_OPTIONS set without symbolize=0 - please fix!");
-
-    }
-
-  }
-
-  setenv("ASAN_OPTIONS",
-         "abort_on_error=1:"
-         "detect_leaks=0:"
-         "symbolize=0:"
-         "allocator_may_return_null=1",
-         0);
-
-  setenv("MSAN_OPTIONS", "exit_code=" STRINGIFY(MSAN_ERROR) ":"
-                         "symbolize=0:"
-                         "abort_on_error=1:"
-                         "allocator_may_return_null=1:"
-                         "msan_track_origins=0", 0);
-
-  if (get_afl_env("AFL_PRELOAD")) {
-
-    if (fsrv->qemu_mode) {
-
-      u8 *qemu_preload = getenv("QEMU_SET_ENV");
-      u8 *afl_preload = getenv("AFL_PRELOAD");
-      u8 *buf;
-
-      s32 i, afl_preload_size = strlen(afl_preload);
-      for (i = 0; i < afl_preload_size; ++i) {
-
-        if (afl_preload[i] == ',') {
-
-          PFATAL(
-              "Comma (',') is not allowed in AFL_PRELOAD when -Q is "
-              "specified!");
-
-        }
-
-      }
-
-      if (qemu_preload) {
-
-        buf = alloc_printf("%s,LD_PRELOAD=%s,DYLD_INSERT_LIBRARIES=%s",
-                           qemu_preload, afl_preload, afl_preload);
-
-      } else {
-
-        buf = alloc_printf("LD_PRELOAD=%s,DYLD_INSERT_LIBRARIES=%s",
-                           afl_preload, afl_preload);
-
-      }
-
-      setenv("QEMU_SET_ENV", buf, 1);
-
-      afl_free(buf);
-
-    } else {
-
-      setenv("LD_PRELOAD", getenv("AFL_PRELOAD"), 1);
-      setenv("DYLD_INSERT_LIBRARIES", getenv("AFL_PRELOAD"), 1);
-
-    }
-
-  }
-
-}
-
-/* Setup signal handlers, duh. */
-
-static void setup_signal_handlers(void) {
-
-  struct sigaction sa;
-
-  sa.sa_handler = NULL;
-  sa.sa_flags = SA_RESTART;
-  sa.sa_sigaction = NULL;
-
-  sigemptyset(&sa.sa_mask);
-
-  /* Various ways of saying "stop". */
-
-  sa.sa_handler = handle_stop_sig;
-  sigaction(SIGHUP, &sa, NULL);
-  sigaction(SIGINT, &sa, NULL);
-  sigaction(SIGTERM, &sa, NULL);
-
-}
-
-/* Display usage hints. */
-
-static void usage(u8 *argv0) {
-
-  SAYF(
-      "\n%s [ options ] -- /path/to/target_app [ ... ]\n\n"
-
-      "Required parameters:\n"
-
-      "  -i port       - the port to listen for the client to connect to\n\n"
-
-      "Execution control settings:\n"
-
-      "  -f file       - input file read by the tested program (stdin)\n"
-      "  -t msec       - timeout for each run (%d ms)\n"
-      "  -m megs       - memory limit for child process (%d MB)\n"
-      "  -Q            - use binary-only instrumentation (QEMU mode)\n"
-      "  -U            - use unicorn-based instrumentation (Unicorn mode)\n"
-      "  -W            - use qemu-based instrumentation with Wine (Wine "
-      "mode)\n\n"
-
-      "Environment variables used:\n"
-      "TMPDIR: directory to use for temporary input files\n"
-      "ASAN_OPTIONS: custom settings for ASAN\n"
-      "              (must contain abort_on_error=1 and symbolize=0)\n"
-      "MSAN_OPTIONS: custom settings for MSAN\n"
-      "              (must contain exitcode="STRINGIFY(MSAN_ERROR)" and symbolize=0)\n"
-      "AFL_MAP_SIZE: the shared memory size for that target. must be >= the size\n"
-      "              the target was compiled for\n"
-      "AFL_PRELOAD:  LD_PRELOAD / DYLD_INSERT_LIBRARIES settings for target\n"
-
-      , argv0, EXEC_TIMEOUT, MEM_LIMIT);
-
-  exit(1);
-
-}
-
-int recv_testcase(int s, void **buf) {
-
-  u32    size;
-  s32    ret;
-  size_t received;
-
-  received = 0;
-  while (received < 4 && (ret = recv(s, &size + received, 4 - received, 0)) > 0)
-    received += ret;
-  if (received != 4) FATAL("did not receive size information");
-  if (size == 0) FATAL("did not receive valid size information");
-  // fprintf(stderr, "received size information of %d\n", size);
-
-  if ((size & 0xff000000) != 0xff000000) {
-
-    *buf = afl_realloc(buf, size);
-    if (unlikely(!*buf)) { PFATAL("Alloc"); }
-    received = 0;
-    // fprintf(stderr, "unCOMPRESS (%u)\n", size);
-    while (received < size &&
-           (ret = recv(s, ((char *)*buf) + received, size - received, 0)) > 0)
-      received += ret;
-
-  } else {
-
-#ifdef USE_DEFLATE
-    u32 clen;
-    size -= 0xff000000;
-    *buf = afl_realloc(buf, size);
-    if (unlikely(!*buf)) { PFATAL("Alloc"); }
-    received = 0;
-    while (received < 4 &&
-           (ret = recv(s, &clen + received, 4 - received, 0)) > 0)
-      received += ret;
-    if (received != 4) FATAL("did not receive clen1 information");
-    // fprintf(stderr, "received clen information of %d\n", clen);
-    if (clen < 1)
-      FATAL("did not receive valid compressed len information: %u", clen);
-    buf2 = afl_realloc((void **)&buf2, clen);
-    buf2_len = clen;
-    if (unlikely(!buf2)) { PFATAL("Alloc"); }
-    received = 0;
-    while (received < clen &&
-           (ret = recv(s, buf2 + received, clen - received, 0)) > 0)
-      received += ret;
-    if (received != clen) FATAL("did not receive compressed information");
-    if (libdeflate_deflate_decompress(decompressor, buf2, clen, (char *)*buf,
-                                      size, &received) != LIBDEFLATE_SUCCESS)
-      FATAL("decompression failed");
-      // fprintf(stderr, "DECOMPRESS (%u->%u):\n", clen, received);
-      // for (u32 i = 0; i < clen; i++) fprintf(stderr, "%02x", buf2[i]);
-      // fprintf(stderr, "\n");
-      // for (u32 i = 0; i < received; i++) fprintf(stderr, "%02x",
-      // ((u8*)(*buf))[i]); fprintf(stderr, "\n");
-#else
-    FATAL("Received compressed data but not compiled with compression support");
-#endif
-
-  }
-
-  // fprintf(stderr, "receiving testcase %p %p max %u\n", buf, *buf, *max_len);
-  if (received != size)
-    FATAL("did not receive testcase data %lu != %u, %d", received, size, ret);
-  // fprintf(stderr, "received testcase\n");
-  return size;
-
-}
-
-/* Main entry point */
-
-int main(int argc, char **argv_orig, char **envp) {
-
-  s32    opt, s, sock, on = 1, port = -1;
-  u8     mem_limit_given = 0, timeout_given = 0, unicorn_mode = 0, use_wine = 0;
-  char **use_argv;
-  struct sockaddr_in6 serveraddr, clientaddr;
-  int                 addrlen = sizeof(clientaddr);
-  char                str[INET6_ADDRSTRLEN];
-  char **             argv = argv_cpy_dup(argc, argv_orig);
-  u8 *                send_buf;
-#ifdef USE_DEFLATE
-  u32 *lenptr;
-#endif
-
-  afl_forkserver_t  fsrv_var = {0};
-  afl_forkserver_t *fsrv = &fsrv_var;
-  afl_fsrv_init(fsrv);
-  map_size = get_map_size();
-  fsrv->map_size = map_size;
-
-  if ((send_buf = malloc(map_size + 4)) == NULL) PFATAL("malloc");
-
-  while ((opt = getopt(argc, argv, "+i:f:m:t:QUWh")) > 0) {
-
-    switch (opt) {
-
-      case 'i':
-
-        if (port > 0) { FATAL("Multiple -i options not supported"); }
-        port = atoi(optarg);
-        if (port < 1 || port > 65535)
-          FATAL("invalid port definition, must be between 1-65535: %s", optarg);
-        break;
-
-      case 'f':
-
-        if (out_file) { FATAL("Multiple -f options not supported"); }
-        fsrv->use_stdin = 0;
-        out_file = optarg;
-        break;
-
-      case 'm': {
-
-        u8 suffix = 'M';
-
-        if (mem_limit_given) { FATAL("Multiple -m options not supported"); }
-        mem_limit_given = 1;
-
-        if (!optarg) { FATAL("Wrong usage of -m"); }
-
-        if (!strcmp(optarg, "none")) {
-
-          fsrv->mem_limit = 0;
-          break;
-
-        }
-
-        if (sscanf(optarg, "%llu%c", &fsrv->mem_limit, &suffix) < 1 ||
-            optarg[0] == '-') {
-
-          FATAL("Bad syntax used for -m");
-
-        }
-
-        switch (suffix) {
-
-          case 'T':
-            fsrv->mem_limit *= 1024 * 1024;
-            break;
-          case 'G':
-            fsrv->mem_limit *= 1024;
-            break;
-          case 'k':
-            fsrv->mem_limit /= 1024;
-            break;
-          case 'M':
-            break;
-
-          default:
-            FATAL("Unsupported suffix or bad syntax for -m");
-
-        }
-
-        if (fsrv->mem_limit < 5) { FATAL("Dangerously low value of -m"); }
-
-        if (sizeof(rlim_t) == 4 && fsrv->mem_limit > 2000) {
-
-          FATAL("Value of -m out of range on 32-bit systems");
-
-        }
-
-      }
-
-      break;
-
-      case 't':
-
-        if (timeout_given) { FATAL("Multiple -t options not supported"); }
-        timeout_given = 1;
-
-        if (!optarg) { FATAL("Wrong usage of -t"); }
-
-        fsrv->exec_tmout = atoi(optarg);
-
-        if (fsrv->exec_tmout < 10 || optarg[0] == '-') {
-
-          FATAL("Dangerously low value of -t");
-
-        }
-
-        break;
-
-      case 'Q':
-
-        if (fsrv->qemu_mode) { FATAL("Multiple -Q options not supported"); }
-        if (!mem_limit_given) { fsrv->mem_limit = MEM_LIMIT_QEMU; }
-
-        fsrv->qemu_mode = 1;
-        break;
-
-      case 'U':
-
-        if (unicorn_mode) { FATAL("Multiple -Q options not supported"); }
-        if (!mem_limit_given) { fsrv->mem_limit = MEM_LIMIT_UNICORN; }
-
-        unicorn_mode = 1;
-        break;
-
-      case 'W':                                           /* Wine+QEMU mode */
-
-        if (use_wine) { FATAL("Multiple -W options not supported"); }
-        fsrv->qemu_mode = 1;
-        use_wine = 1;
-
-        if (!mem_limit_given) { fsrv->mem_limit = 0; }
-
-        break;
-
-      case 'h':
-        usage(argv[0]);
-        return -1;
-        break;
-
-      default:
-        usage(argv[0]);
-
-    }
-
-  }
-
-  if (optind == argc || port < 1) { usage(argv[0]); }
-
-  check_environment_vars(envp);
-
-  sharedmem_t shm = {0};
-  fsrv->trace_bits = afl_shm_init(&shm, map_size, 0);
-
-  in_data = afl_realloc((void **)&in_data, 65536);
-  if (unlikely(!in_data)) { PFATAL("Alloc"); }
-
-  atexit(at_exit_handler);
-  setup_signal_handlers();
-
-  set_up_environment(fsrv);
-
-  fsrv->target_path = find_binary(argv[optind]);
-  detect_file_args(argv + optind, out_file, &fsrv->use_stdin);
-
-  if (fsrv->qemu_mode) {
-
-    if (use_wine) {
-
-      use_argv = get_wine_argv(argv[0], &fsrv->target_path, argc - optind,
-                               argv + optind);
-
-    } else {
-
-      use_argv = get_qemu_argv(argv[0], &fsrv->target_path, argc - optind,
-                               argv + optind);
-
-    }
-
-  } else {
-
-    use_argv = argv + optind;
-
-  }
-
-  if ((sock = socket(AF_INET6, SOCK_STREAM, 0)) < 0) PFATAL("socket() failed");
-
-#ifdef SO_REUSEADDR
-  if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) {
-
-    WARNF("setsockopt(SO_REUSEADDR) failed");
-
-  }
-
-#endif
-
-#ifdef SO_PRIORITY
-  int priority = 7;
-  if (setsockopt(sock, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority)) <
-      0) {
-
-    priority = 6;
-    if (setsockopt(sock, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority)) <
-        0)
-      WARNF("could not set priority on socket");
-
-  }
-
-#endif
-
-  memset(&serveraddr, 0, sizeof(serveraddr));
-  serveraddr.sin6_family = AF_INET6;
-  serveraddr.sin6_port = htons(port);
-  serveraddr.sin6_addr = in6addr_any;
-
-  if (bind(sock, (struct sockaddr *)&serveraddr, sizeof(serveraddr)) < 0)
-    PFATAL("bind() failed");
-
-  if (listen(sock, 1) < 0) { PFATAL("listen() failed"); }
-
-  afl_fsrv_start(
-      fsrv, use_argv, &stop_soon,
-      (get_afl_env("AFL_DEBUG_CHILD") || get_afl_env("AFL_DEBUG_CHILD_OUTPUT"))
-          ? 1
-          : 0);
-
-#ifdef USE_DEFLATE
-  compressor = libdeflate_alloc_compressor(1);
-  decompressor = libdeflate_alloc_decompressor();
-  buf2 = afl_realloc((void **)&buf2, map_size + 16);
-  buf2_len = map_size + 16;
-  if (unlikely(!buf2)) { PFATAL("alloc"); }
-  lenptr = (u32 *)(buf2 + 4);
-  fprintf(stderr, "Compiled with compression support\n");
-#endif
-
-  fprintf(stderr,
-          "Waiting for incoming connection from afl-network-client on port %d "
-          "...\n",
-          port);
-
-  if ((s = accept(sock, NULL, NULL)) < 0) { PFATAL("accept() failed"); }
-  fprintf(stderr, "Received connection, starting ...\n");
-
-#ifdef SO_PRIORITY
-  priority = 7;
-  if (setsockopt(s, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority)) < 0) {
-
-    priority = 6;
-    if (setsockopt(s, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority)) < 0)
-      WARNF("could not set priority on socket");
-
-  }
-
-#endif
-
-  while ((in_len = recv_testcase(s, (void **)&in_data)) > 0) {
-
-    // fprintf(stderr, "received %u\n", in_len);
-    (void)run_target(fsrv, use_argv, in_data, in_len, 1);
-
-    memcpy(send_buf + 4, fsrv->trace_bits, fsrv->map_size);
-
-#ifdef USE_DEFLATE
-    memcpy(buf2, &fsrv->child_status, 4);
-    *lenptr = (u32)libdeflate_deflate_compress(
-        compressor, send_buf + 4, fsrv->map_size, buf2 + 8, buf2_len - 8);
-    // fprintf(stderr, "COMPRESS (%u->%u): ", fsrv->map_size, *lenptr);
-    // for (u32 i = 0; i < fsrv->map_size; i++) fprintf(stderr, "%02x",
-    // fsrv->trace_bits[i]); fprintf(stderr, "\n");
-    if (send(s, buf2, *lenptr + 8, 0) != 8 + *lenptr)
-      FATAL("could not send data");
-#else
-    memcpy(send_buf, &fsrv->child_status, 4);
-    if (send(s, send_buf, fsrv->map_size + 4, 0) != 4 + fsrv->map_size)
-      FATAL("could not send data");
-#endif
-
-    // fprintf(stderr, "sent result\n");
-
-  }
-
-  unlink(out_file);
-  if (out_file) { ck_free(out_file); }
-  out_file = NULL;
-
-  afl_shm_deinit(&shm);
-  afl_fsrv_deinit(fsrv);
-  if (fsrv->target_path) { ck_free(fsrv->target_path); }
-  afl_free(in_data);
-#if USE_DEFLATE
-  afl_free(buf2);
-  libdeflate_free_compressor(compressor);
-  libdeflate_free_decompressor(decompressor);
-#endif
-
-  argv_cpy_free(argv);
-
-  exit(0);
-
-}
-