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/*
* Copyright (C) 2015 Dimitris Papastamos <sin@2f30.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _FORTIFY_WCHAR_H
#define _FORTIFY_WCHAR_H
#include_next <stdlib.h>
#include_next <wchar.h>
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
#include "fortify-headers.h"
#ifdef __cplusplus
extern "C" {
#endif
#undef fgetws
#undef mbsrtowcs
#undef mbstowcs
#undef wcrtomb
#undef wcscat
#undef wcscpy
#undef wcsncat
#undef wcsncpy
#undef wcsrtombs
#undef wcstombs
#undef wctomb
#undef wmemcpy
#undef wmemmove
#undef wmemset
fortify_fn(fgetws) wchar_t *fgetws(wchar_t *s, int n, FILE *fp)
{
size_t bos = __builtin_object_size(s, 0);
if ((size_t)n > bos / sizeof(wchar_t))
__builtin_trap();
return __orig_fgetws(s, n, fp);
}
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#undef mbsnrtowcs
fortify_fn(mbsnrtowcs) size_t mbsnrtowcs(wchar_t *d, const char **s, size_t n,
size_t wn, mbstate_t *st)
{
size_t bos = __builtin_object_size(d, 0);
size_t r;
if (wn > n / sizeof(wchar_t)) {
bos /= sizeof(wchar_t);
r = __orig_mbsnrtowcs(d, s, n, wn > bos ? bos : wn, st);
if (bos < wn && d && *s && r != (size_t)-1)
__builtin_trap();
} else {
r = __orig_mbsnrtowcs(d, s, n > bos ? bos : n, wn, st);
if (bos < n && d && *s && r != (size_t)-1)
__builtin_trap();
}
return r;
}
#endif
fortify_fn(mbsrtowcs) size_t mbsrtowcs(wchar_t *d, const char **s, size_t wn,
mbstate_t *st)
{
size_t bos = __builtin_object_size(d, 0);
size_t r;
bos /= sizeof(wchar_t);
r = __orig_mbsrtowcs(d, s, wn > bos ? bos : wn, st);
if (bos < wn && d && *s && r != (size_t)-1)
__builtin_trap();
return r;
}
fortify_fn(mbstowcs) size_t mbstowcs(wchar_t *ws, const char *s, size_t wn)
{
size_t bos = __builtin_object_size(ws, 0);
if (ws && wn > bos / sizeof(wchar_t))
__builtin_trap();
return __orig_mbstowcs(ws, s, wn);
}
fortify_fn(wcrtomb) size_t wcrtomb(char *s, wchar_t wc, mbstate_t *st)
{
size_t bos = __builtin_object_size(s, 0);
if (s && MB_CUR_MAX > bos)
__builtin_trap();
return __orig_wcrtomb(s, wc, st);
}
fortify_fn(wcscat) wchar_t *wcscat(wchar_t *d, const wchar_t *s)
{
size_t bos = __builtin_object_size(d, 0);
if (wcslen(s) + wcslen(d) + 1 > bos / sizeof(wchar_t))
__builtin_trap();
return __orig_wcscat(d, s);
}
fortify_fn(wcscpy) wchar_t *wcscpy(wchar_t *d, const wchar_t *s)
{
size_t bos = __builtin_object_size(d, 0);
if (wcslen(s) + 1 > bos / sizeof(wchar_t))
__builtin_trap();
return __orig_wcscpy(d, s);
}
fortify_fn(wcsncat) wchar_t *wcsncat(wchar_t *d, const wchar_t *s, size_t n)
{
size_t bos = __builtin_object_size(d, 0);
size_t slen, dlen;
if (n > bos / sizeof(wchar_t)) {
slen = wcslen(s);
dlen = wcslen(d);
if (slen > n)
slen = n;
if (slen + dlen + 1 > bos / sizeof(wchar_t))
__builtin_trap();
}
return __orig_wcsncat(d, s, n);
}
fortify_fn(wcsncpy) wchar_t *wcsncpy(wchar_t *d, const wchar_t *s, size_t n)
{
size_t bos = __builtin_object_size(d, 0);
if (n > bos / sizeof(wchar_t))
__builtin_trap();
return __orig_wcsncpy(d, s, n);
}
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#undef wcsnrtombs
fortify_fn(wcsnrtombs) size_t wcsnrtombs(char *d, const wchar_t **s, size_t wn,
size_t n, mbstate_t *st)
{
size_t bos = __builtin_object_size(d, 0);
size_t r;
if (wn > n / sizeof(wchar_t)) {
bos /= sizeof(wchar_t);
r = __orig_wcsnrtombs(d, s, wn > bos ? bos : wn, n, st);
if (bos < wn && d && *s && r != (size_t)-1)
__builtin_trap();
} else {
r = __orig_wcsnrtombs(d, s, wn, n > bos ? bos : n, st);
if (bos < n && d && *s && r != (size_t)-1)
__builtin_trap();
}
return r;
}
#endif
fortify_fn(wcsrtombs) size_t wcsrtombs(char *d, const wchar_t **s, size_t n,
mbstate_t *st)
{
size_t bos = __builtin_object_size(d, 0);
size_t r;
r = __orig_wcsrtombs(d, s, n > bos ? bos : n, st);
if (bos < n && d && *s && r != (size_t)-1)
__builtin_trap();
return r;
}
fortify_fn(wcstombs) size_t wcstombs(char *s, const wchar_t *ws, size_t n)
{
size_t bos = __builtin_object_size(s, 0);
if (s && n > bos)
__builtin_trap();
return __orig_wcstombs(s, ws, n);
}
fortify_fn(wctomb) int wctomb(char *s, wchar_t wc)
{
size_t bos = __builtin_object_size(s, 0);
if (s && MB_CUR_MAX > bos)
__builtin_trap();
return __orig_wctomb(s, wc);
}
fortify_fn(wmemcpy) wchar_t *wmemcpy(wchar_t *d, const wchar_t *s, size_t n)
{
size_t bos = __builtin_object_size(d, 0);
if (n > bos / sizeof(wchar_t))
__builtin_trap();
return __orig_wmemcpy(d, s, n);
}
fortify_fn(wmemmove) wchar_t *wmemmove(wchar_t *d, const wchar_t *s, size_t n)
{
size_t bos = __builtin_object_size(d, 0);
if (n > bos / sizeof(wchar_t))
__builtin_trap();
return __orig_wmemmove(d, s, n);
}
fortify_fn(wmemset) wchar_t *wmemset(wchar_t *s, wchar_t c, size_t n)
{
size_t bos = __builtin_object_size(s, 0);
if (n > bos / sizeof(wchar_t))
__builtin_trap();
return __orig_wmemset(s, c, n);
}
#ifdef __cplusplus
}
#endif
#endif
#endif
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