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/*
* Copyright (c) 2002-2009 BalaBit IT Ltd, Budapest, Hungary
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* Note that this permission is granted for only version 2 of the GPL.
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "compat.h"
#include <fcntl.h>
#include <ctype.h>
#include <string.h>
#if !HAVE_PREAD || HAVE_BROKEN_PREAD
ssize_t
bb__pread(int fd, void *buf, size_t count, off_t offset)
{
ssize_t ret;
off_t old_offset;
old_offset = lseek(fd, 0, SEEK_CUR);
if (old_offset == -1)
return -1;
if (lseek(fd, offset, SEEK_SET) < 0)
return -1;
ret = read(fd, buf, count);
if (ret < 0)
return -1;
if (lseek(fd, old_offset, SEEK_SET) < 0)
return -1;
return ret;
}
ssize_t
bb__pwrite(int fd, const void *buf, size_t count, off_t offset)
{
ssize_t ret;
off_t old_offset;
old_offset = lseek(fd, 0, SEEK_CUR);
if (old_offset == -1)
return -1;
if (lseek(fd, offset, SEEK_SET) < 0)
return -1;
ret = write(fd, buf, count);
if (ret < 0)
return -1;
if (lseek(fd, old_offset, SEEK_SET) < 0)
return -1;
return ret;
}
#endif
#if !HAVE_STRCASESTR
char *
strcasestr(const char *haystack, const char *needle)
{
char c;
size_t len;
if ((c = *needle++) != 0)
{
c = tolower((unsigned char) c);
len = strlen(needle);
do
{
for (; *haystack && tolower((unsigned char) *haystack) != c; haystack++)
;
if (!(*haystack))
return NULL;
haystack++;
}
while (strncasecmp(haystack, needle, len) != 0);
haystack--;
}
return (char *) haystack;
}
#endif
#if !HAVE_MEMRCHR
const void *
memrchr(const void *s, int c, size_t n)
{
const unsigned char *p = (unsigned char *) s + n - 1;
while (p >= (unsigned char *) s)
{
if (*p == c)
return p;
p--;
}
return NULL;
}
#endif
#ifdef _AIX
intmax_t __strtollmax(const char *__nptr, char **__endptr, int __base)
{
return strtoll(__nptr, __endptr, __base);
}
#endif
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