Fix self-tests and their non-fatal auto-skip on RedPorts.

Add patch-tests__t_cltsrv.sh to properly skip self-tests when no
inet/inet6 addresses are available, and to properly use udp6 when only
inet6 is available (for instance, on RedPorts).

Drop patch-src__openvpn__syshead.h, had already been integrated upstream.

PR:		ports/185439 (related)

security/openvpn/files/patch-src__openvpn__syshead.h

@@ -1,16 +0,0 @@
-Work around "missing" TCP_NODELAY,
-obtained from: http://community.openvpn.net/openvpn/ticket/158
-
---- ./src/openvpn/syshead.h.orig	2012-11-22 13:07:51.000000000 +0100
-+++ ./src/openvpn/syshead.h	2013-01-11 21:30:07.000000000 +0100
-@@ -307,6 +307,10 @@
- #include <netinet/ip.h>
- #endif
- 
-+#ifdef HAVE_NETINET_TCP_H
-+#include <netinet/tcp.h>
-+#endif
-+
- #ifdef HAVE_NET_IF_TUN_H
- #include <net/if_tun.h>
- #endif

security/openvpn/files/patch-tests__t_cltsrv.sh

@@ -0,0 +1,65 @@
+--- ./tests/t_cltsrv.sh.orig	2013-05-31 14:00:07.000000000 +0200
++++ ./tests/t_cltsrv.sh	2014-01-27 18:51:13.000000000 +0100
+@@ -1,7 +1,7 @@
+ #! /bin/sh
+ #
+ # t_cltsrv.sh - script to test OpenVPN's crypto loopback
+-# Copyright (C) 2005, 2006, 2008  Matthias Andree
++# Copyright (C) 2005 - 2014  Matthias Andree
+ #
+ # This program is free software; you can redistribute it and/or
+ # modify it under the terms of the GNU General Public License
+@@ -22,8 +22,9 @@
+ srcdir="${srcdir:-.}"
+ top_srcdir="${top_srcdir:-..}"
+ top_builddir="${top_builddir:-..}"
+-trap "rm -f log.$$ log.$$.signal ; trap 0 ; exit 77" 1 2 15
+-trap "rm -f log.$$ log.$$.signal ; exit 1" 0 3
++root="${top_srcdir}/sample"
++trap "rm -f ${root}/sample-config-files/loopback-*.test log.$$ log.$$.signal ; trap 0 ; exit 77" 1 2 15
++trap "a=\$? ; rm -f ${root}/sample-config-files/loopback-*.test log.$$ log.$$.signal ; test \$a = 0 && exit 1 || exit \$a" 0 3
+ addopts=
+ case `uname -s` in
+     FreeBSD)
+@@ -45,18 +46,38 @@
+ # make sure that the --down script is executable -- fail (rather than
+ # skip) test if it isn't.
+ downscript="../tests/t_cltsrv-down.sh"
+-root="${top_srcdir}/sample"
+ test -x "${root}/${downscript}" || chmod +x "${root}/${downscript}" || { echo >&2 "${root}/${downscript} is not executable, failing." ; exit 1 ; }
+ echo "The following test will take about two minutes." >&2
+ echo "If the addresses are in use, this test will retry up to two times." >&2
+ 
++set -- $(ifconfig lo0 | grep -E '\<inet' | head -n1)
++add=
++if [ "x$1$2" = "x" ] ; then
++    echo >&2 "### NO ADDRESSES ON LOOPBACK INTERFACE lo0, SKIPPING TEST ###"
++    exit 77
++fi
++if [ "inet6" = "$1" ] ; then
++    add='proto udp6'
++fi
++for i in server client ; do
++    sed -e "s/localhost/$2/" -e "/^remote/a\\
++$add" ${root}/sample-config-files/loopback-$i \
++    >${root}/sample-config-files/loopback-$i.test
++done
++
+ # go
+ success=0
+ for i in 1 2 3 ; do
+   set +e
+   (
+-  "${top_builddir}/src/openvpn/openvpn" --script-security 2 --cd "${root}" ${addopts} --setenv role srv --down "${downscript}" --tls-exit --ping-exit 180 --config "sample-config-files/loopback-server" &
+-  "${top_builddir}/src/openvpn/openvpn" --script-security 2 --cd "${top_srcdir}/sample" ${addopts} --setenv role clt --down "${downscript}" --tls-exit --ping-exit 180 --config "sample-config-files/loopback-client"
++  "${top_builddir}/src/openvpn/openvpn" --script-security 2 \
++      --cd "${root}" ${addopts} --setenv role srv \
++      --down "${downscript}" --tls-exit --ping-exit 180 \
++      --config "sample-config-files/loopback-server.test" &
++  "${top_builddir}/src/openvpn/openvpn" --script-security 2 \
++      --cd "${top_srcdir}/sample" ${addopts} --setenv role clt \
++      --down "${downscript}" --tls-exit --ping-exit 180 \
++      --config "sample-config-files/loopback-client.test"
+   ) 3>log.$$.signal >log.$$ 2>&1
+   e1=$?
+   wait $!