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authormjl <mjl@NetBSD.org>2000-01-12 05:02:10 +0000
committermjl <mjl@NetBSD.org>2000-01-12 05:02:10 +0000
commit142f369443ea01931a0e5ec4fcd3a9e7f13bd951 (patch)
treedde9d36f3bed128d35df56afe0d9463bf8bc58e7 /lib/libutil/securepath.c
parentd16fa2828e8de48e0ba114254dc68f2eadb833df (diff)
Add necessary support routines for login.conf.
Diffstat (limited to 'lib/libutil/securepath.c')
-rw-r--r--lib/libutil/securepath.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/lib/libutil/securepath.c b/lib/libutil/securepath.c
new file mode 100644
index 00000000000..a5f33ce7ce0
--- /dev/null
+++ b/lib/libutil/securepath.c
@@ -0,0 +1,67 @@
+/* $NetBSD: securepath.c,v 1.1 2000/01/12 05:02:10 mjl Exp $ */
+
+/*-
+ * Copyright (c) 1995,1997 Berkeley Software Design, Inc. 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 Berkeley Software Design,
+ * Inc.
+ * 4. The name of Berkeley Software Design, Inc. may not be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``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 BERKELEY SOFTWARE DESIGN, INC. 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.
+ *
+ * BSDI login_cap.c,v 2.13 1998/02/07 03:17:05 prb Exp
+ */
+
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <util.h>
+#include <syslog.h>
+
+int
+secure_path(char *path)
+{
+ struct stat sb;
+
+ /*
+ * If not a regular file, or is owned/writeable by someone
+ * other than root, quit.
+ */
+ if (lstat(path, &sb) < 0) {
+ syslog(LOG_ERR, "cannot stat %s: %m", path);
+ return (-1);
+ } else if (!S_ISREG(sb.st_mode)) {
+ syslog(LOG_ERR, "%s: not a regular file", path);
+ return (-1);
+ } else if (sb.st_uid != 0) {
+ syslog(LOG_ERR, "%s: not owned by root", path);
+ return (-1);
+ } else if (sb.st_mode & (S_IWGRP | S_IWOTH)) {
+ syslog(LOG_ERR, "%s: writeable by non-root", path);
+ return (-1);
+ }
+ return (0);
+}