#!/bin/bash

# Copyright 2006, Alan Hicks, Lizella, GA
# Copyright 2008, 2009, 2010, 2011, 2013, 2016, 2018  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.

cd $(dirname $0) ; CWD=$(pwd)

PKGNAM=openvpn
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.xz | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1_slack14.2}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

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

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

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 \
  --disable-plugin-auth-pam \
  --build=$ARCH-slackware-linux || exit 1

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

# 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 startup script:
mkdir -p $PKG/etc/rc.d
cp -a $CWD/rc.openvpn $PKG/etc/rc.d/rc.openvpn.new
chmod 644 $PKG/etc/rc.d/rc.openvpn.new
chown root:root $PKG/etc/rc.d/rc.openvpn.new

# 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
One or more OpenVPN config files should be installed in this directory
as files ending in ".conf" (i.e. client.conf, server.conf, etc.).

Have a look in sample-config-files for some more examples of how to
configure OpenVPN.

To start OpenVPN, use this command as root:
sh /etc/rc.d/rc.openvpn start

To make OpenVPN start automatically at boot, change the script permissions:
chmod 755 /etc/rc.d/rc.openvpn

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

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

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* INSTALL* \
  NEWS PORTS README* sample/sample-config-files sample/sample-keys sample/sample-scripts \
  $PKG/usr/doc/$PKGNAM-$VERSION

# Install a reasonably generic sample config file:
# (put this in with the other samples)
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION/sample-config-files
cp -a $CWD/slackware.conf $PKG/usr/doc/$PKGNAM-$VERSION/sample-config-files
chown root:root $PKG/usr/doc/$PKGNAM-$VERSION/sample-config-files/slackware.conf
chmod 644 $PKG/usr/doc/$PKGNAM-$VERSION/sample-config-files/slackware.conf

# 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
zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh
cat $CWD/slack-desc > $PKG/install/slack-desc

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