1 files changed, 67 insertions, 0 deletions
diff --git a/missing/arc4random.c b/missing/arc4random.c
new file mode 100644
index 0000000..8d1e050
--- /dev/null
+++ b/missing/arc4random.c
@@ -0,0 +1,67 @@
+/*	$KAME: arc4random.c,v 1.1 2003/01/22 01:30:36 jinmei 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.
+ */
+/*
+ * a stub function to make random() to return good random numbers.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/uio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <err.h>
+
+#include "arc4random.h"
+
+static int fd = -1;
+
+static void
+arc4random_init()
+{
+
+	fd = open("/dev/urandom", O_RDONLY, 0600);
+	if (fd < 0) {
+		err(1, "/dev/urandom");
+		/*NOTREACHED*/
+	}
+}
+
+u_int32_t
+arc4random()
+{
+	u_int32_t v;
+
+	if (fd < 0)
+		arc4random_init();
+	read(fd, &v, sizeof(v));
+	return v;
+}