#!/bin/bash

# Slackware build script for openvpn 

# Copyright 2025 Frank Honolka <info.snukware@gmail.com>
# 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)

PRGNAM=openvpn			
VERSION=${VERSION:-$(echo $PRGNAM-*.tar.?z | rev | cut -d"." -f 3- | cut -d"-" -f1 | rev)}
BUILD=${BUILD:-1}
TAG=${TAG:-_snuk}		
PKGTYPE=${PKGTYPE:-txz}
# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) ARCH=$( uname -m ) ;;
  esac
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/var/cache/snukware/tmp}	
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/var/cache/snukware/n}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "aarch64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e 

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.?z
cd $PRGNAM-$VERSION

# https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg19302.html
sed -i '/^CONFIGURE_DEFINES=/s/set/env/g' configure.ac || exit 1

autoreconf --force --install

chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

# Choose correct options depending on whether PAM is installed:
if [ -L /lib${LIBDIRSUFFIX}/libpam.so.? ]; then
  PAM_OPTIONS="--enable-plugin-auth-pam"
  unset SHADOW_OPTIONS
else
  unset PAM_OPTIONS
  SHADOW_OPTIONS="--disable-plugin-auth-pam"
fi

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --sbindir=/usr/bin \
  --enable-dco \
  --enable-pkcs11 \
  --enable-plugins \
  --enable-systemd \
  --enable-x509-alt-username \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  $PAM_OPTIONS \
  $SHADOW_OPTIONS \
  --build=$ARCH-slackware-linux
  #--enable-pkcs11 \

make
make install DESTDIR=$PKG

#mv $PKG/usr/lib$LIBDIRSUFFIX/systemd $PKG/usr/lib/systemd || exit 1
#rm -rf  $PKG/usr/lib$LIBDIRSUFFIX/tmpfiles.d || exit 1

install -D -m0644 $CWD/files/openvpn.sysusers "${PKG}"/usr/lib/sysusers.d/openvpn.conf || exit 1
install -D -m0644 $CWD/files/openvpn.tmpfiles "${PKG}"/usr/lib/tmpfiles.d/openvpn.conf || exit 1
mv $PKG//usr/lib$LIBDIRSUFFIX/systemd $PKG/usr/lib/ || exit 1
rm -rf $PKG//usr/lib$LIBDIRSUFFIX/tmpfiles.d || exit 1

# Install examples
install -d -m0755 "${PKG}"/usr/share/openvpn || exit 1
cp -r sample/sample-config-files "${PKG}"/usr/share/openvpn/examples

# Install contrib
for FILE in $(find contrib -type f); do
 case "$(file --brief --mime-type --no-sandbox "${FILE}")" in
   "text/x-shellscript")
       install -D -m0755 "${FILE}" "${PKG}/usr/share/openvpn/${FILE}" ;;
    *)
       install -D -m0644 "${FILE}" "${PKG}/usr/share/openvpn/${FILE}" ;;
esac
done

# Don't ship .la files:
rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

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

find $PKG -name perllocal.pod \
  -o -name ".packlist" \
  -o -name "*.bs" \
  | xargs rm -f

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
DOCS="AUTHORS CONTRIBUTING.rst COPYING COPYRIGHT.GPL ChangeLog NEWS README README.cmake.md README.dco.md README.ec README.mbedtls README.wolfssl"
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

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

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE