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weechat/tests/fuzz/core/utf8-fuzzer.cc

111 lines
2.3 KiB
C++

/*
* SPDX-FileCopyrightText: 2025 Sébastien Helleu <flashcode@flashtux.org>
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* WeeChat 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WeeChat. If not, see <https://www.gnu.org/licenses/>.
*/
/* Fuzz testing on WeeChat core UTF-8 functions */
extern "C"
{
#include <stdlib.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "src/core/core-config.h"
#include "src/core/core-utf8.h"
extern void weechat_init_gettext (void);
}
extern "C" int
LLVMFuzzerInitialize (int *argc, char ***argv)
{
/* make C++ compiler happy */
(void) argc;
(void) argv;
weechat_init_gettext ();
config_weechat_init ();
return 0;
}
extern "C" int
LLVMFuzzerTestOneInput (const uint8_t *data, size_t size)
{
char *str, *str2, utf8_char[5], *error;
size_t i;
str = (char *)malloc (size + 1);
memcpy (str, data, size);
str[size] = '\0';
utf8_has_8bits (str);
utf8_is_valid (str, size, &error);
str2 = strdup (str);
utf8_normalize (str2, '?');
free (str2);
for (i = 0; i < 5; i++)
{
if (size >= i)
{
utf8_prev_char (str, str + i);
utf8_beginning_of_line (str, str + i);
}
}
utf8_next_char (str);
utf8_end_of_line (str);
utf8_char_int (str);
utf8_int_string (utf8_char_int (str), utf8_char);
utf8_char_size (str);
utf8_strlen (str);
utf8_strnlen (str, size / 2);
utf8_char_size_screen (str);
utf8_strlen_screen (str);
if (size > 4)
{
utf8_add_offset (str, 1);
utf8_real_pos (str, 1);
utf8_pos (str, 1);
}
free (utf8_strndup (str, size / 2));
if (size > 4)
utf8_strncpy (utf8_char, str, 1);
free (str);
return 0;
}