6d5297569e
Checking there are still bytes left must be done before dereferencing the pointer, not the other way round. This is harmless on traditional architectures since the result will immediately be thrown away, and all callers are in separate translation units so there is no potential for optimising based on this out-of-bounds read. However, on CHERI, pointers are bounded, and so this will trap if fed a string that does not have a NUL within the first len bytes. Found by: CHERI Reviewed by: brooks
171 lines
3.5 KiB
C
171 lines
3.5 KiB
C
/* $FreeBSD$ */
|
|
/* $NetBSD: citrus_bcs.c,v 1.5 2005/05/14 17:55:42 tshiozak Exp $ */
|
|
|
|
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c)2003 Citrus Project,
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "citrus_namespace.h"
|
|
#include "citrus_bcs.h"
|
|
|
|
/*
|
|
* case insensitive comparison between two C strings.
|
|
*/
|
|
int
|
|
_citrus_bcs_strcasecmp(const char * __restrict str1,
|
|
const char * __restrict str2)
|
|
{
|
|
int c1, c2;
|
|
|
|
c1 = c2 = 1;
|
|
|
|
while (c1 && c2 && c1 == c2) {
|
|
c1 = _bcs_toupper(*str1++);
|
|
c2 = _bcs_toupper(*str2++);
|
|
}
|
|
|
|
return ((c1 == c2) ? 0 : ((c1 > c2) ? 1 : -1));
|
|
}
|
|
|
|
/*
|
|
* case insensitive comparison between two C strings with limitation of length.
|
|
*/
|
|
int
|
|
_citrus_bcs_strncasecmp(const char * __restrict str1,
|
|
const char * __restrict str2, size_t sz)
|
|
{
|
|
int c1, c2;
|
|
|
|
c1 = c2 = 1;
|
|
|
|
while (c1 && c2 && c1 == c2 && sz != 0) {
|
|
c1 = _bcs_toupper(*str1++);
|
|
c2 = _bcs_toupper(*str2++);
|
|
sz--;
|
|
}
|
|
|
|
return ((c1 == c2) ? 0 : ((c1 > c2) ? 1 : -1));
|
|
}
|
|
|
|
/*
|
|
* skip white space characters.
|
|
*/
|
|
const char *
|
|
_citrus_bcs_skip_ws(const char *p)
|
|
{
|
|
|
|
while (*p && _bcs_isspace(*p))
|
|
p++;
|
|
|
|
return (p);
|
|
}
|
|
|
|
/*
|
|
* skip non white space characters.
|
|
*/
|
|
const char *
|
|
_citrus_bcs_skip_nonws(const char *p)
|
|
{
|
|
|
|
while (*p && !_bcs_isspace(*p))
|
|
p++;
|
|
|
|
return (p);
|
|
}
|
|
|
|
/*
|
|
* skip white space characters with limitation of length.
|
|
*/
|
|
const char *
|
|
_citrus_bcs_skip_ws_len(const char * __restrict p, size_t * __restrict len)
|
|
{
|
|
|
|
while (*len > 0 && *p && _bcs_isspace(*p)) {
|
|
p++;
|
|
(*len)--;
|
|
}
|
|
|
|
return (p);
|
|
}
|
|
|
|
/*
|
|
* skip non white space characters with limitation of length.
|
|
*/
|
|
const char *
|
|
_citrus_bcs_skip_nonws_len(const char * __restrict p, size_t * __restrict len)
|
|
{
|
|
|
|
while (*len > 0 && *p && !_bcs_isspace(*p)) {
|
|
p++;
|
|
(*len)--;
|
|
}
|
|
|
|
return (p);
|
|
}
|
|
|
|
/*
|
|
* truncate trailing white space characters.
|
|
*/
|
|
void
|
|
_citrus_bcs_trunc_rws_len(const char * __restrict p, size_t * __restrict len)
|
|
{
|
|
|
|
while (*len > 0 && _bcs_isspace(p[*len - 1]))
|
|
(*len)--;
|
|
}
|
|
|
|
/*
|
|
* destructive transliterate to lowercase.
|
|
*/
|
|
void
|
|
_citrus_bcs_convert_to_lower(char *s)
|
|
{
|
|
|
|
while (*s) {
|
|
*s = _bcs_tolower(*s);
|
|
s++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* destructive transliterate to uppercase.
|
|
*/
|
|
void
|
|
_citrus_bcs_convert_to_upper(char *s)
|
|
{
|
|
|
|
while (*s) {
|
|
*s = _bcs_toupper(*s);
|
|
s++;
|
|
}
|
|
}
|