adventure requires deterministic random for its internal data

"obfuscation" scheme to work (words fail me), but we can use arc4random
for the in game fun. from theo buehler

3 files changed, 11 insertions, 7 deletions

diff --git a/games/adventure/init.c b/games/adventure/init.c
index 6de5b774b9d..6060368fbdd 100644
--- a/games/adventure/init.c
+++ b/games/adventure/init.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: init.c,v 1.12 2014/12/08 21:56:27 deraadt Exp $	*/
+/*	$OpenBSD: init.c,v 1.13 2014/12/31 15:45:57 tedu Exp $	*/
 /*	$NetBSD: init.c,v 1.4 1996/05/21 21:53:05 mrg Exp $	*/
 
 /*-
@@ -56,6 +56,11 @@ int     setbit[16] = {1, 2, 4, 010, 020, 040, 0100, 0200, 0400, 01000, 02000,
 void
 init(void)			/* everything for 1st time run */
 {
+	/*
+	 * We need deterministic randomness for the obfuscation schemes
+	 * in io.c and setup.c.
+	 */
+	srandom_deterministic(1);
 	rdata();		/* read data from orig. file */
 	linkdata();
 	poof();
diff --git a/games/adventure/setup.c b/games/adventure/setup.c
index 0446a365bee..f062ac368fc 100644
--- a/games/adventure/setup.c
+++ b/games/adventure/setup.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: setup.c,v 1.11 2014/12/08 21:56:27 deraadt Exp $	*/
+/*	$OpenBSD: setup.c,v 1.12 2014/12/31 15:45:57 tedu Exp $	*/
 /*	$NetBSD: setup.c,v 1.2 1995/03/21 12:05:10 cgd Exp $	*/
 
 /*-
@@ -78,6 +78,8 @@ main(int argc, char *argv[])
 	count = 0;
 	linestart = YES;
 
+	srandom_deterministic(1);
+
 	while ((c = getc(infile)) != EOF) {
 		if (count++ % LINE == 0)
 			printf("\n\t");
diff --git a/games/adventure/wizard.c b/games/adventure/wizard.c
index 5255115834e..ff70f510619 100644
--- a/games/adventure/wizard.c
+++ b/games/adventure/wizard.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: wizard.c,v 1.16 2014/11/16 04:49:48 guenther Exp $	*/
+/*	$OpenBSD: wizard.c,v 1.17 2014/12/31 15:45:57 tedu Exp $	*/
 /*	$NetBSD: wizard.c,v 1.3 1995/04/24 12:21:41 cgd Exp $	*/
 
 /*-
@@ -141,8 +141,5 @@ ciao(void)
 int
 ran(int range)
 {
-	long    i;
-
-	i = random() % range;
-	return (i);
+	return (arc4random_uniform(range));
 }