#!/bin/bash

# Copyright 2009, 2011, 2015  Robby Workman, Northport, Alabama, USA
# Copyright 2010  Eric Hameleers, Eindhoven, NL
# Copyright 2009, 2010, 2011, 2012, 2013, 2018, 2020  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=polkit
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-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=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM

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

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

# Make sure ownerships and permissions are sane:
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 {} \+

zcat $CWD/dont-set-wheel-group-as-admin.diff.gz | patch -p1 --verbose || exit 1
zcat $CWD/disable_systemd_checking.diff.gz | patch -p1 --verbose || exit 1

# If we get here and don't have a polkitd user/group, add one.
# Otherwise a few directories in the package will have wrong permissions.
if ! grep -q "^polkitd:" /etc/passwd ; then
  groupadd -fg 87 polkitd
  useradd -c "PolicyKit daemon owner" -d /var/lib/polkit -u 87 -g polkitd -s /bin/false polkitd
fi

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

mkdir build
cd    build
LIBELOGIND_CFLAGS="$(pkg-config --cflags libelogind)" \
LIBELOGIND_LIBS="$(pkg-config --libs libelogind)" \
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
meson --prefix=/usr \
      --mandir=/usr/man \
      --buildtype=release \
      -Dman=true \
      -Dsession_tracking=libelogind \
      -Dintrospection=true \
      -Dgtk_doc=true \
      -Dlibdir=lib${LIBDIRSUFFIX} \
      $PAM_OPTIONS \
      $SHADOW_OPTIONS \
      -Djs_engine=duktape \
      .. || exit 1
ninja $NUMJOBS || exit 1
DESTDIR=$PKG ninja install || exit 1

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

# Create homedir for polkit.  This is mentioned in /etc/passwd, but isn't
# actually used for anything later.  Perms don't matter.
mkdir -p $PKG/var/lib/polkit

# Move dbus configs to system location:
mkdir -p $PKG/usr/share/dbus-1/system.d/
mv $PKG/etc/dbus-1/system.d/* $PKG/usr/share/dbus-1/system.d/
rmdir --parents $PKG/etc/dbus-1/system.d/

# Leave the /etc/polkit-1/rules.d/ dir in place, but move the config(s)
mv $PKG/etc/polkit-1/rules.d/* $PKG/usr/share/polkit-1/rules.d/

if [ ! -z "$PAM_OPTIONS" ]; then
  # Make the PAM file .new:
  mv $PKG/etc/pam.d/polkit-1 $PKG/etc/pam.d/polkit-1.new
fi

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

# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
  ( cd $PKG/usr/man
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.*
      )
    done
  )
fi

# Add a documentation directory:
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
cp -a \
  AUTHORS COPYING HACKING INSTALL NEWS README \
  $PKG/usr/doc/$PKGNAM-$VERSION
( cd $PKG/usr/doc/$PKGNAM-$VERSION; ln -s ../../share/gtk-doc/html/polkit-1 html )

# 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 $PKG/usr/doc/*-$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