sudo 1.6, now with a BSD license

1 files changed, 85 insertions, 0 deletions

diff --git a/usr.bin/sudo/goodpath.c b/usr.bin/sudo/goodpath.c
new file mode 100644
index 00000000000..862ac9697ab
--- /dev/null
+++ b/usr.bin/sudo/goodpath.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 1996, 1998, 1999 Todd C. Miller <Todd.Miller@courtesan.com>
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 4. Products derived from this software may not be called "Sudo" nor
+ *    may "Sudo" appear in their names without specific prior written
+ *    permission from the author.
+ *
+ * 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.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+
+#include "sudo.h"
+
+#ifndef STDC_HEADERS
+extern int stat		__P((const char *, struct stat *));
+#endif /* !STDC_HEADERS */
+
+#ifndef lint
+static const char rcsid[] = "$Sudo: goodpath.c,v 1.37 1999/08/20 20:37:14 millert Exp $";
+#endif /* lint */
+
+/*
+ * Verify that path is a normal file and executable by root.
+ */
+char *
+sudo_goodpath(path)
+    const char *path;
+{
+    struct stat sb;
+
+    /* Check for brain damage */
+    if (path == NULL || path[0] == '\0')
+	return(NULL);
+
+    if (stat(path, &sb))
+	return(NULL);
+
+    /* Make sure path describes an executable regular file. */
+    if (!S_ISREG(sb.st_mode) || !(sb.st_mode & 0000111)) {
+	errno = EACCES;
+	return(NULL);
+    }
+
+    return((char *)path);
+}