[gssapi-openssh.git] / openssh / openbsd-compat / basename.c

/* OPENBSD ORIGINAL: lib/libc/gen/basename.c */

/*	$OpenBSD: basename.c,v 1.11 2003/06/17 21:56:23 millert Exp $	*/

/*
 * Copyright (c) 1997 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 "includes.h"
#ifndef HAVE_BASENAME

#ifndef lint
static char rcsid[] = "$OpenBSD: basename.c,v 1.11 2003/06/17 21:56:23 millert Exp $";
#endif /* not lint */

char *
basename(const char *path)
{
	static char bname[MAXPATHLEN];
	register const char *endp, *startp;

	/* Empty or NULL string gets treated as "." */
	if (path == NULL || *path == '\0') {
		(void)strlcpy(bname, ".", sizeof bname);
		return(bname);
	}

	/* Strip trailing slashes */
	endp = path + strlen(path) - 1;
	while (endp > path && *endp == '/')
		endp--;

	/* All slashes become "/" */
	if (endp == path && *endp == '/') {
		(void)strlcpy(bname, "/", sizeof bname);
		return(bname);
	}

	/* Find the start of the base */
	startp = endp;
	while (startp > path && *(startp - 1) != '/')
		startp--;

	if (endp - startp + 2 > sizeof(bname)) {
		errno = ENAMETOOLONG;
		return(NULL);
	}
	strlcpy(bname, startp, endp - startp + 2);
	return(bname);
}

#endif /* !defined(HAVE_BASENAME) */
Commit	Line	Data
12408a1b	1	/* OPENBSD ORIGINAL: lib/libc/gen/basename.c */
12408a1b	2
0fff78ff	3	/* $OpenBSD: basename.c,v 1.11 2003/06/17 21:56:23 millert Exp $ */
6a9b3198	4
	5	/*
	6	* Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
6a9b3198	7	*
0fff78ff	8	* Permission to use, copy, modify, and distribute this software for any
	9	* purpose with or without fee is hereby granted, provided that the above
	10	* copyright notice and this permission notice appear in all copies.
6a9b3198	11	*
0fff78ff	12	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	13	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	14	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	15	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	16	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	17	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	18	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
6a9b3198	19	*/
6a9b3198	20
0fff78ff	21	#include "includes.h"
0fff78ff	22	#ifndef HAVE_BASENAME
6a9b3198	23
6a9b3198	24	#ifndef lint
0fff78ff	25	static char rcsid[] = "$OpenBSD: basename.c,v 1.11 2003/06/17 21:56:23 millert Exp $";
6a9b3198	26	#endif /* not lint */
	27
	28	char *
	29	basename(const char *path)
	30	{
	31	static char bname[MAXPATHLEN];
	32	register const char endp, startp;
	33
	34	/* Empty or NULL string gets treated as "." */
	35	if (path == NULL \|\| *path == '\0') {
	36	(void)strlcpy(bname, ".", sizeof bname);
	37	return(bname);
	38	}
	39
	40	/* Strip trailing slashes */
	41	endp = path + strlen(path) - 1;
	42	while (endp > path && *endp == '/')
	43	endp--;
	44
	45	/* All slashes become "/" */
	46	if (endp == path && *endp == '/') {
	47	(void)strlcpy(bname, "/", sizeof bname);
	48	return(bname);
	49	}
	50
	51	/* Find the start of the base */
	52	startp = endp;
	53	while (startp > path && *(startp - 1) != '/')
	54	startp--;
	55
	56	if (endp - startp + 2 > sizeof(bname)) {
	57	errno = ENAMETOOLONG;
	58	return(NULL);
	59	}
	60	strlcpy(bname, startp, endp - startp + 2);
	61	return(bname);
	62	}
	63
	64	#endif /* !defined(HAVE_BASENAME) */