X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/1656cbed2cc5aae3febe8fa303e29e19e0a74c7e..aa10bde9cde380cb95f798d19277fdb72018a9f8:/openbsd-compat/dirname.c

diff --git a/openbsd-compat/dirname.c b/openbsd-compat/dirname.c
index 391b2dd8..30fcb496 100644
--- a/openbsd-compat/dirname.c
+++ b/openbsd-compat/dirname.c
@@ -1,57 +1,45 @@
-/*	$OpenBSD: dirname.c,v 1.6 2001/06/28 04:27:19 pjanzen Exp $	*/
+/*	$OpenBSD: dirname.c,v 1.13 2005/08/08 08:05:33 espie Exp $	*/
 
 /*
- * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
- * All rights reserved.
+ * Copyright (c) 1997, 2004 Todd C. Miller <Todd.Miller@courtesan.com>
  *
- * 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. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
+ * 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.
  *
- * THIS SOFTWARE IS PROVIDED ``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 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.
+ * 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.
  */
 
+/* OPENBSD ORIGINAL: lib/libc/gen/dirname.c */
+
 #include "includes.h"
 #ifndef HAVE_DIRNAME
 
-#if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$OpenBSD: dirname.c,v 1.6 2001/06/28 04:27:19 pjanzen Exp $";
-#endif /* LIBC_SCCS and not lint */
-
 #include <errno.h>
 #include <string.h>
 #include <sys/param.h>
 
 char *
-dirname(path)
-	const char *path;
+dirname(const char *path)
 {
-	static char bname[MAXPATHLEN];
-	register const char *endp;
+	static char dname[MAXPATHLEN];
+	size_t len;
+	const char *endp;
 
 	/* Empty or NULL string gets treated as "." */
 	if (path == NULL || *path == '\0') {
-		(void)strcpy(bname, ".");
-		return(bname);
+		dname[0] = '.';
+		dname[1] = '\0';
+		return (dname);
 	}
 
-	/* Strip trailing slashes */
+	/* Strip any trailing slashes */
 	endp = path + strlen(path) - 1;
 	while (endp > path && *endp == '/')
 		endp--;
@@ -62,19 +50,23 @@ dirname(path)
 
 	/* Either the dir is "/" or there are no slashes */
 	if (endp == path) {
-		(void)strcpy(bname, *endp == '/' ? "/" : ".");
-		return(bname);
+		dname[0] = *endp == '/' ? '/' : '.';
+		dname[1] = '\0';
+		return (dname);
 	} else {
+		/* Move forward past the separating slashes */
 		do {
 			endp--;
 		} while (endp > path && *endp == '/');
 	}
 
-	if (endp - path + 2 > sizeof(bname)) {
+	len = endp - path + 1;
+	if (len >= sizeof(dname)) {
 		errno = ENAMETOOLONG;
-		return(NULL);
+		return (NULL);
 	}
-	strlcpy(bname, path, endp - path + 2);
-	return(bname);
+	memcpy(dname, path, len);
+	dname[len] = '\0';
+	return (dname);
 }
 #endif