#!/bin/sh

# Copyright 2006, Alan Hicks, Lizella, GA
# Copyright 2008, 2009, 2010, 2011, 2013  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.


PKGNAM=openvpn
VERSION=2.3.2
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i486 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

NUMJOBS=${NUMJOBS:-" -j7 "}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $PKGNAM-$VERSION
tar xvf $CWD/$PKGNAM-$VERSION.tar.xz || exit 1
cd $PKGNAM-$VERSION || exit 1

# Fix ownership and permissions inside the source tarball.
# It's appalling how many projects have 777 permissions or
# even suid, sgid, and sticky bits set on things.
chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \; -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \;

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc/openvpn \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc/openvpn-${VERSION} \
  --enable-lzo \
  --enable-iproute2 \
  --enable-password-save \
  --enable-plugin-auth-pam \
  --build=$ARCH-slackware-linux

make $NUMJOBS || make || exit 1
make install-strip DESTDIR=$PKG || exit 1

# Make openvpn-auth-pam.so
make -C plugin/auth-pam
strip plugin/auth-pam/openvpn-auth-pam.so
mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}
cp -a plugin/auth-pam/openvpn-auth-pam.so $PKG/usr/lib${LIBDIRSUFFIX}/
mv plugin/auth-pam/README plugin/auth-pam/README.pam

# Create a decent config directory. openvpn doesn't have one by
# default, nor does it have a single config file.
mkdir -p $PKG/etc/openvpn/{certs,keys}
chown root:nobody $PKG/etc/openvpn/{certs,keys}
chmod 750 $PKG/etc/openvpn/{certs,keys}

# Install a reasonably generic sample config file:
cp -a $CWD/openvpn.conf.sample $PKG/etc/openvpn/openvpn.conf.sample
chmod 644 $PKG/etc/openvpn/openvpn.conf.sample

# Let folks know about the other configs, if they haven't found them.
# They might even find the documentation there useful.  ;-)
cat << EOF > $PKG/etc/openvpn/README.TXT
Have a look in /usr/doc/$PKGNAM-$VERSION/sample-config-files
for some more examples of how to configure OpenVPN.  You'll
need to add something to your /etc/rc.d/rc.local to start
OpenVPN, as well as to tell it where to find its config file.


See "man openvpn" and the other docs for more information.
EOF

# Add a link, too:
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION/sample-config-files
( cd $PKG/usr/doc/$PKGNAM-$VERSION/sample-config-files
  ln -sf /etc/openvpn/openvpn.conf.sample .
)

if [ -d $PKG/usr/man ]; then
( cd $PKG/usr/man
  find . -type f -exec gzip -9 {} \;
  for i in $(find . -type l) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
)
fi

mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
cp -a AUTHORS COPYING* COPYRIGHT.GPL INSTALL INSTALL-win32.txt \
  NEWS PORTS README* sample-config-files sample-keys sample-scripts easy-rsa \
  $PKG/usr/doc/$PKGNAM-$VERSION

# If there's a ChangeLog, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r ChangeLog ]; then
  DOCSDIR=$(echo $PKG/usr/doc/${PKGNAM}-$VERSION)
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz