1 files changed, 93 insertions, 0 deletions
diff --git a/ipsec-tools/src/racoon/safefile.c b/ipsec-tools/src/racoon/safefile.c
new file mode 100644
index 00000000..52410920
--- /dev/null
+++ b/ipsec-tools/src/racoon/safefile.c
@@ -0,0 +1,93 @@
+/*	$NetBSD: safefile.c,v 1.4 2006/09/09 16:22:10 manu Exp $	*/
+
+/*	$KAME: safefile.c,v 1.5 2001/03/05 19:54:06 thorpej Exp $	*/
+
+/*
+ * Copyright (C) 2000 WIDE Project.
+ * 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. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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 <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <unistd.h>
+
+#include "plog.h"
+#include "debug.h"
+#include "misc.h"
+#include "safefile.h"
+
+int
+safefile(path, secret)
+	const char *path;
+	int secret;
+{
+	struct stat s;
+	uid_t me;
+
+	/* no setuid */
+	if (getuid() != geteuid()) {
+		plog(LLV_ERROR, LOCATION, NULL,
+		    "setuid'ed execution not allowed\n");
+		return -1;
+	}
+
+	if (stat(path, &s) != 0)
+		return -1;
+
+	/* the file must be owned by the running uid */
+	me = getuid();
+	if (s.st_uid != me) {
+		plog(LLV_ERROR, LOCATION, NULL,
+		    "%s has invalid owner uid\n", path);
+		return -1;
+	}
+
+	switch (s.st_mode & S_IFMT) {
+	case S_IFREG:
+		break;
+	default:
+		plog(LLV_ERROR, LOCATION, NULL,
+		    "%s is an invalid file type 0x%x\n", path,
+		    (s.st_mode & S_IFMT));
+		return -1;
+	}
+
+	/* secret file should not be read by others */
+	if (secret) {
+		if ((s.st_mode & S_IRWXG) != 0 || (s.st_mode & S_IRWXO) != 0) {
+			plog(LLV_ERROR, LOCATION, NULL,
+			    "%s has weak file permission\n", path);
+			return -1;
+		}
+	}
+
+	return 0;
+}