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/* $OpenBSD: strlcpy.c,v 1.10 2005/08/08 08:05:37 espie Exp $ */
/* $OpenBSD: strlcat.c,v 1.12 2005/03/30 20:13:52 otto Exp $ */
/*
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* 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.
*/
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <errno.h>
#ifndef _WIN32
#include <unistd.h>
#endif
#include <libpkgconf/bsdstubs.h>
#include <libpkgconf/config.h>
#if !HAVE_DECL_STRLCPY
/*
* Copy src to string dst of size siz. At most siz-1 characters
* will be copied. Always NUL terminates (unless siz == 0).
* Returns strlen(src); if retval >= siz, truncation occurred.
*/
static inline size_t
strlcpy(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
/* Copy as many bytes as will fit */
if (n != 0) {
while (--n != 0) {
if ((*d++ = *s++) == '\0')
break;
}
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0) {
if (siz != 0)
*d = '\0'; /* NUL-terminate dst */
while (*s++)
;
}
return(s - src - 1); /* count does not include NUL */
}
#endif
#if !HAVE_DECL_STRLCAT
/*
* Appends src to string dst of size siz (unlike strncat, siz is the
* full size of dst, not space left). At most siz-1 characters
* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
* Returns strlen(src) + MIN(siz, strlen(initial dst)).
* If retval >= siz, truncation occurred.
*/
static inline size_t
strlcat(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0 && *d != '\0')
d++;
dlen = d - dst;
n = siz - dlen;
if (n == 0)
return(dlen + strlen(s));
while (*s != '\0') {
if (n != 1) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return(dlen + (s - src)); /* count does not include NUL */
}
#endif
/*
* Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* This software is provided 'as is' and without any warranty, express or
* implied. In no event shall the authors be liable for any damages arising
* from the use of this software.
*/
#if !HAVE_DECL_STRNDUP
/*
* Creates a memory buffer and copies at most 'len' characters to it.
* If 'len' is less than the length of the source string, truncation occured.
*/
static inline char *
strndup(const char *src, size_t len)
{
char *out = malloc(len + 1);
pkgconf_strlcpy(out, src, len + 1);
return out;
}
#endif
#if !HAVE_DECL_PLEDGE
static inline int
pledge(const char *promises, const char *execpromises)
{
(void) promises;
(void) execpromises;
return 0;
}
#endif
#if !HAVE_DECL_UNVEIL
static inline int
unveil(const char *path, const char *permissions)
{
(void) path;
(void) permissions;
return 0;
}
#endif
size_t
pkgconf_strlcpy(char *dst, const char *src, size_t siz)
{
return strlcpy(dst, src, siz);
}
size_t
pkgconf_strlcat(char *dst, const char *src, size_t siz)
{
return strlcat(dst, src, siz);
}
char *
pkgconf_strndup(const char *src, size_t len)
{
return strndup(src, len);
}
#if !HAVE_DECL_REALLOCARRAY
void *
reallocarray(void *ptr, size_t m, size_t n)
{
if (n && m > -1 / n)
{
errno = ENOMEM;
return 0;
}
return realloc(ptr, m * n);
}
#endif
void *
pkgconf_reallocarray(void *ptr, size_t m, size_t n)
{
return reallocarray(ptr, m, n);
}
int
pkgconf_pledge(const char *promises, const char *execpromises)
{
return pledge(promises, execpromises);
}
int
pkgconf_unveil(const char *path, const char *permissions)
{
return unveil(path, permissions);
}
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