From 8681c66eec53c5c25f6eab3c1cd8d14180e5aec4 Mon Sep 17 00:00:00 2001
From: "Dr. Stephen Henson" <steve@openssl.org>
Date: Mon, 6 Apr 2009 14:31:36 +0000
Subject: [PATCH] PR: 1890 Submitted by: "Green, Paul" <Paul.Green@stratus.com>
 Approved by: steve@openssl.org

Fixes to --with-zlib-include and --with-zlib-lib and init PRNG for VOS.
---
 Configure               |  9 ++++++++-
 Makefile.org            |  1 +
 crypto/Makefile         |  4 ++--
 crypto/rand/rand_unix.c | 45 ++++++++++++++++++++++++++++++++++++++++-
 4 files changed, 55 insertions(+), 4 deletions(-)

diff --git a/Configure b/Configure
index ae8ce89e30..8f9f2ded4a 100755
--- a/Configure
+++ b/Configure
@@ -1218,7 +1218,14 @@ if ($zlib)
 	$cflags = "-DZLIB $cflags";
 	if (defined($disabled{"zlib-dynamic"}))
 		{
-		$lflags = "$lflags -lz";
+		if (defined($withargs{"zlib-lib"}))
+			{
+			$lflags = "$lflags -L" . $withargs{"zlib-lib"} . " -lz";
+			}
+		else
+			{
+			$lflags = "$lflags -lz";
+			}
 		}
 	else
 		{
diff --git a/Makefile.org b/Makefile.org
index 69be0f6cca..f60b7a15ce 100644
--- a/Makefile.org
+++ b/Makefile.org
@@ -188,6 +188,7 @@ BUILDENV=	PLATFORM='$(PLATFORM)' PROCESSOR='$(PROCESSOR)' \
 		MAKEDEPPROG='$(MAKEDEPPROG)'			\
 		SHARED_LDFLAGS='$(SHARED_LDFLAGS)'		\
 		KRB5_INCLUDES='$(KRB5_INCLUDES)' LIBKRB5='$(LIBKRB5)'	\
+		ZLIB_INCLUDE='$(ZLIB_INCLUDE)' LIBZLIB='$(LIBZLIB)'	\
 		EXE_EXT='$(EXE_EXT)' SHARED_LIBS='$(SHARED_LIBS)'	\
 		SHLIB_EXT='$(SHLIB_EXT)' SHLIB_TARGET='$(SHLIB_TARGET)'	\
 		PEX_LIBS='$(PEX_LIBS)' EX_LIBS='$(EX_LIBS)'	\
diff --git a/crypto/Makefile b/crypto/Makefile
index b730fa45d7..c1033f6d77 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -5,9 +5,9 @@
 DIR=		crypto
 TOP=		..
 CC=		cc
-INCLUDE=	-I. -I$(TOP) -I../include
+INCLUDE=	-I. -I$(TOP) -I../include $(ZLIB_INCLUDE)
 # INCLUDES targets sudbirs!
-INCLUDES=	-I.. -I../.. -I../asn1 -I../evp -I../../include
+INCLUDES=	-I.. -I../.. -I../asn1 -I../evp -I../../include $(ZLIB_INCLUDE)
 CFLAG=		-g
 MAKEDEPPROG=	makedepend
 MAKEDEPEND=	$(TOP)/util/domd $(TOP) -MD $(MAKEDEPPROG)
diff --git a/crypto/rand/rand_unix.c b/crypto/rand/rand_unix.c
index 550ad955f0..e9ead3a529 100644
--- a/crypto/rand/rand_unix.c
+++ b/crypto/rand/rand_unix.c
@@ -133,7 +133,50 @@
 # define FD_SETSIZE (8*sizeof(fd_set))
 #endif
 
-#ifdef __OpenBSD__
+#ifdef __VOS__
+int RAND_poll(void)
+{
+	unsigned char buf[ENTROPY_NEEDED];
+	pid_t curr_pid;
+	uid_t curr_uid;
+	static int first=1;
+	int i;
+	long rnd = 0;
+	struct timespec ts;
+	unsigned seed;
+
+/* The VOS random() function starts from a static seed so its
+   initial value is predictable.  If random() returns the
+   initial value, reseed it with dynamic data.  The VOS
+   real-time clock has a granularity of 1 nsec so it should be
+   reasonably difficult to predict its exact value.  Do not
+   gratuitously reseed the PRNG because other code in this
+   process or thread may be using it.  */
+
+	if (first) {
+		first = 0;
+		rnd = random ();
+		if (rnd == 1804289383) {
+			clock_gettime (CLOCK_REALTIME, &ts);
+			curr_pid = getpid();
+			curr_uid = getuid();
+			seed = ts.tv_sec ^ ts.tv_nsec ^ curr_pid ^ curr_uid;
+			srandom (seed);
+		}
+	}
+
+	for (i = 0; i < sizeof(buf); i++) {
+		if (i % 4 == 0)
+			rnd = random();
+		buf[i] = rnd;
+		rnd >>= 8;
+	}
+	RAND_add(buf, sizeof(buf), ENTROPY_NEEDED);
+	memset(buf, 0, sizeof(buf));
+
+	return 1;
+}
+#elif defined __OpenBSD__
 int RAND_poll(void)
 {
 	u_int32_t rnd = 0, i;
-- 
2.25.1