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BSD versions of strcasecmp() and strncasecmp() after a bug

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in strcasecmp() reported by Rogier Meurs <rogier@meurs.org>.
This commit is contained in:
Ben Gras 2006-12-19 13:15:16 +00:00
parent 7d012272a1
commit 4daf936bd2
1 changed files with 59 additions and 31 deletions
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90
lib/ip/strcasecmp.c
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@ -1,43 +1,71 @@
/*
strcasecmp.c
Created Oct 14, 1991 by Philip Homburg
*/
* Copyright (c) 1987, 1993
* The Regents of the University of California. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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/types.h>
#include <ansi.h>
#include <strings.h>
#include <ctype.h>
#include <string.h>
#ifdef __STDC__
#define _CONST const
#else
#define _CONST
#endif
int
strcasecmp(s1, s2)
_CONST char *s1, *s2;
const char *s1, *s2;
{
int c1, c2;
while (c1= toupper(*s1++), c2= toupper(*s2++), c1 == c2 && (c1 & c2))
;
if (c1 & c2)
return c1 < c2 ? -1 : 1;
return c1 ? 1 : (c2 ? -1 : 0);
const u_char
*us1 = (const u_char *)s1,
*us2 = (const u_char *)s2;
while (tolower(*us1) == tolower(*us2++))
if (*us1++ == '\0')
return (0);
return (tolower(*us1) - tolower(*--us2));
}
int
strncasecmp(s1, s2, len)
_CONST char *s1, *s2;
size_t len;
strncasecmp(s1, s2, n)
const char *s1, *s2;
size_t n;
{
int c1, c2;
do {
if (len == 0)
return 0;
len--;
} while (c1= toupper(*s1++), c2= toupper(*s2++), c1 == c2 && (c1 & c2))
;
if (c1 & c2)
return c1 < c2 ? -1 : 1;
return c1 ? 1 : (c2 ? -1 : 0);
if (n != 0) {
const u_char
*us1 = (const u_char *)s1,
*us2 = (const u_char *)s2;
do {
if (tolower(*us1) != tolower(*us2++))
return (tolower(*us1) - tolower(*--us2));
if (*us1++ == '\0')
break;
} while (--n != 0);
}
return (0);
}