#!/bin/bash
ulimit -s unlimited
shopt -s extglob

# openvpn.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter <mozes@slackware.com>
#
# Copyright 2006, Alan Hicks, Lizella, GA
# 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.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
slackset_var_cwds

# 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

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# Extract source:
tar xvvf $CWD/$PKGNAM-$VERSION.tar.!(*sign|*asc|*sig)
cd $PKGNAM-$VERSION || exit 1
slackhousekeeping

# Configure:
[ ! -x configure ] && autoreconf -vif
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
   --prefix=/usr \
   --mandir=/usr/man \
   --libdir=/usr/lib${LIBDIRSUFFIX} \
   --docdir=/usr/doc/openvpn-${VERSION} \
   --sysconfdir=/etc/openvpn \
   --localstatedir=/var \
   --enable-lzo \
   --enable-iproute2 \
   $PAM_OPTIONS \
   $SHADOW_OPTIONS \
   --build=${SLK_ARCH_BUILD} || failconfig

# Build:
make $NUMJOBS || make || failmake

# Install into package:
make install-strip DESTDIR=$PKG || failinstall

if [ ! -z "$PAM_OPTIONS" ]; then
   # Make openvpn-auth-pam.so:
   make -C plugin/auth-pam
   strip --strip-unneeded plugin/auth-pam/openvpn-auth-pam.so
   mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}
   install -vpm755 plugin/auth-pam/openvpn-auth-pam.so $PKG/usr/lib${LIBDIRSUFFIX}/
   mv -fv plugin/auth-pam/README plugin/auth-pam/README.pam
fi

# Create a decent config directory. openvpn doesn't have one by
# default, nor does it have a single config file.
mkdir -pm750 $PKG/etc/openvpn/{certs,keys}

# Install a startup script:
mkdir -vpm755 $PKG/etc/rc.d
install -vpm644 $CWD/rc.openvpn $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:
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION/sample-config-files
( cd $PKG/etc/openvpn
  ln -vfs ../../usr/doc/$PKGNAM-$VERSION/sample-config-files . )

# Copy docs:
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
changelogliposuction ChangeLog $PKGNAM $VERSION # Trim down a "ChangeLog" file

# Install a reasonably generic sample config file:
# (put this in with the other samples)
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION/sample-config-files
install -vpm644 $CWD/slackware.conf $PKG/usr/doc/$PKGNAM-$VERSION/sample-config-files/

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall   # strip all .a archives and all ELFs
#slackstriprpaths     # strip rpaths
slack_delete_lafiles # delete usr/lib{,64}/*.la
slackgzpages -i # compress man & info pages and delete usr/info/dir
slackslack      # chown -R root:root, chmod -R og-w, slackchown, slack644docs

# Special permissions/ownerships:
chown root:nobody $PKG/etc/openvpn/{certs,keys}

slackdesc       # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links