/*

 * Copyright (c) 2017-2024 Free Software Foundation, Inc.

 *

 * This file is part of libwget.

 *

 * Libwget is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * Libwget is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with libwget.  If not, see <https://www.gnu.org/licenses/>.

 */

#include <config.h>

#include <assert.h> // assert

#include <stdlib.h> // malloc, free

#include <string.h> // memcpy

// #include <unistd.h> // chroot

#include "wget.h"

#include "fuzzer.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)

{

  char dst1[1];

  char dst2[2];

  char dst3[3];

  char dst4[4];

  char dst5[8];

  char *dst = (char *) malloc(size * 2 + 1);

  char *data0 = (char *) malloc(size + 1);

  int x = 0; // avoid pure functions to be optimized away

  assert(dst != NULL);

  assert(data0 != NULL);

  // 0-terminate data

  memcpy(data0, data, size);

  data0[size] = 0;

  // some test for code coverage

  x += wget_strcmp(NULL, "");

  x += wget_strcmp("", NULL);

  x += wget_strcmp(NULL, NULL);

  x += wget_strcmp(data0, data0);

  x +=  wget_strncmp(NULL, "", 0);

  x += wget_strncmp("", NULL, 0);

  x += wget_strncmp(NULL, NULL, 0);

  x += wget_strncmp((char *) data, (char *) data, size);

  x += wget_strcasecmp(NULL, "");

  x += wget_strcasecmp("", NULL);

  x += wget_strcasecmp(NULL, NULL);

  x += wget_strcasecmp(data0, data0);

  x += wget_strncasecmp(NULL, "", 0);

  x += wget_strncasecmp("", NULL, 0);

  x += wget_strncasecmp(NULL, NULL, 0);

  x += wget_strncasecmp((char *) data, (char *) data, size);

  x += wget_strcasecmp_ascii(NULL, "");

  x += wget_strcasecmp_ascii("", NULL);

  x += wget_strcasecmp_ascii(NULL, NULL);

  x += wget_strcasecmp_ascii(data0, data0);

  x += wget_strncasecmp_ascii(NULL, "", 0);

  x += wget_strncasecmp_ascii("", NULL, 0);

  x += wget_strncasecmp_ascii(NULL, NULL, 0);

  x += wget_strncasecmp_ascii((char *) data, (char *) data, size);

  wget_strtolower(NULL);

  wget_strtolower(data0);

  memcpy(data0, (char *) data, size); // restore

  wget_millisleep(-1);

  wget_get_timemillis();

  wget_percent_unescape(data0);

  memcpy(data0, data, size); // restore

  x += wget_match_tail(data0, data0);

  x += wget_match_tail("", data0);

  x += wget_match_tail(data0, "");

  x += wget_match_tail_nocase(data0, data0);

  x += wget_match_tail_nocase("", data0);

  x += wget_match_tail_nocase(data0, "");

//  if (chroot(".") == 0) {

    char *p;

    if ((p = wget_strnglob("*", 1,  0)))

      wget_free(p);

//  } else

//    printf("Failed to chroot\n");

  if (size < 31) {

    char buf[16];

    x += !!wget_human_readable(dst1, sizeof(dst1), (1 << size) - 1);

    x += !!wget_human_readable(buf, sizeof(buf), (1 << size) - 1);

  }

  (void) x; // needed to get rid of bug reported by scan-build

  int w, h;

  wget_get_screen_size(&w, &h);

  wget_memtohex(NULL, 0, NULL, 0);

  wget_memtohex(data, size, dst1, sizeof(dst1));

  wget_memtohex(data, size, dst2, sizeof(dst2));

  wget_memtohex(data, size, dst3, sizeof(dst3));

  wget_memtohex(data, size, dst4, sizeof(dst4));

  wget_memtohex(data, size, dst5, sizeof(dst5));

  wget_memtohex(data, size, dst, size * 2 + 1);

  free(data0);

  free(dst);

  return 0;

}