#!/bin/bash

# Copyright 2026  Patrick J. Volkerding, Sebeka, Minnesota, 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=xlibre-server
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    i?86) ARCH=i686 ;;
    arm*) readelf /usr/bin/file -A | egrep -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *) ARCH=$(uname -m) ;;
  esac
  export ARCH
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) "}

if [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=pentium4 -mtune=generic"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -march=x86-64 -mtune=generic -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

# Fail on undeclared variables and broken pipes:
set -u -o pipefail

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.?z || exit 1
cd $PKGNAM-$VERSION || exit 1

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 {} \+

# Configure, build, and install:
export CFLAGS="$SLKCFLAGS"
export CXXFLAGS="$SLKCFLAGS"
mkdir meson-build
cd meson-build
meson setup \
  --prefix=/usr \
  --libdir=lib${LIBDIRSUFFIX} \
  --libexecdir=/usr/libexec \
  --bindir=/usr/bin \
  --sbindir=/usr/sbin \
  --includedir=/usr/include \
  --datadir=/usr/share \
  --mandir=/usr/man \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --buildtype=release \
  -Ddpms=true \
  -Dipv6=true \
  -Dxvfb=true \
  -Dxnest=true \
  -Dxcsecurity=true \
  -Dxorg=true \
  -Dxephyr=true \
  -Dglamor=true \
  -Dudev=true \
  -Ddtrace=false \
  -Dseatd_libseat=true \
  -Dsuid_wrapper=true \
  -Dxkb_dir='/usr/share/X11/xkb' \
  -Dxkb_output_dir='/var/lib/xkb' \
  -Dlibunwind=true \
  .. || exit 1
  "${NINJA:=ninja}" $NUMJOBS || exit 1
  DESTDIR=$PKG $NINJA install || exit 1
cd ..

# Tighten the perms on /usr/libexec/Xorg.wrap:
chmod 4511 $PKG//usr/libexec/Xorg.wrap

# Add a config file for Xorg.wrap:
cp -a $CWD/Xwrapper.config $PKG/etc/X11/Xwrapper.config.new
chown root:root $PKG/etc/X11/Xwrapper.config.new
chmod 644 $PKG/etc/X11/Xwrapper.config.new

# Create a sample keyboard layout
# Enable zapping by default
cat << EOF > $PKG/usr/share/X11/xorg.conf.d/90-keyboard-layout-evdev.conf
Section "InputClass"
        Identifier "keyboard-all"
        MatchIsKeyboard "on"
        MatchDevicePath "/dev/input/event*"
        Driver "evdev"
        Option "XkbLayout" "us"
        #Option "XkbVariant" ""
        Option "XkbOptions" "terminate:ctrl_alt_bksp"
EndSection

# READ THIS FOR CUSTOM KEYBOARD INFORMATION
#
#  If you want to add a custom model/layout/variant to X, you will need to COPY
#  this file to /etc/X11/xorg.conf.d/ and edit that copy.  After editing it to
#  suit, you will need to restart X.
#
#  Here's an example of the lines from above:
#
# Section "InputClass"
#       Identifier "keyboard-all"
#       MatchIsKeyboard "on"
#       MatchDevicePath "/dev/input/event*"
#       Driver "evdev"
#       Option "XkbLayout" "us"
#       Option "XkbVariant" "intl"
#       Option "XkbOptions" "compose:rwin,terminate:ctrl_alt_bksp"
# EndSection
#
#  Many desktop environments, including KDE and Xfce, have their own methods to
#  configure keyboard layouts and such if you'd like to use them.
#
#  If you prefer to use the "old" way of configuring keyboards (without input
#  device hotplugging), then you'll need to add the following lines to the
#  ServerFlags section of /etc/X11/xorg.conf:
#    Option   "AllowEmptyInput"     "false"
#    Option   "AutoAddDevices"      "false"
#    Option   "AutoEnableDevices"   "false"
#  Alternatively, you can break this up into separate "stubs" in the xorg.conf.d/
#  directory, but that's your call.  Assuming you elect to keep a monolithic
#  /etc/X11/xorg.conf file, you can now edit the Keyboard section as usual.

EOF

# While I hate to have X11 take over another generic-sounding
# piece of prime filesystem real estate, this symlink will
# direct (for now) proprietary X drivers into the correct
# location:
( cd $PKG/usr/lib${LIBDIRSUFFIX}
  rm -rf modules
  ln -sf xorg/modules .
)

# 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 manual pages:
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

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  CODE_OF_CONDUCT* CODE_OVERVIEW* CONTRIBUTING* COPYING* CoC* HISTORY* NEWS* README* \
  $PKG/usr/doc/${PKGNAM}-$VERSION
mv $PKG/usr/share/doc/xorg-server/* $PKG/usr/doc/${PKGNAM}-$VERSION
rmdir $PKG/usr/share/doc/xorg-server $PKG/usr/share/doc

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

# Build the xlibre-server-xnest package:
rm -rf $TMP/package-xlibre-server-xnest
mkdir -p $TMP/package-xlibre-server-xnest/usr/bin
mv $PKG/usr/bin/Xnest $TMP/package-xlibre-server-xnest/usr/bin
mkdir -p $TMP/package-xlibre-server-xnest/usr/man/man1
mv $PKG/usr/man/man1/Xnest.1.gz $TMP/package-xlibre-server-xnest/usr/man/man1
mkdir -p $TMP/package-xlibre-server-xnest/install
cat $CWD/slack-desc.xlibre-server-xnest > $TMP/package-xlibre-server-xnest/install/slack-desc
( cd $TMP/package-xlibre-server-xnest
  /sbin/makepkg -l y -c n $TMP/xlibre-server-xnest-${VERSION}-$ARCH-$BUILD.txz
)

# Build the xlibre-server-xvfb package:
rm -rf $TMP/package-xlibre-server-xvfb
mkdir -p $TMP/package-xlibre-server-xvfb/usr/bin
mv $PKG/usr/bin/Xvfb $TMP/package-xlibre-server-xvfb/usr/bin
mkdir -p $TMP/package-xlibre-server-xvfb/usr/man/man1
mv $PKG/usr/man/man1/Xvfb.1.gz $TMP/package-xlibre-server-xvfb/usr/man/man1
mkdir -p $TMP/package-xlibre-server-xvfb/install
cat $CWD/slack-desc.xlibre-server-xvfb > $TMP/package-xlibre-server-xvfb/install/slack-desc
( cd $TMP/package-xlibre-server-xvfb
  /sbin/makepkg -l y -c n $TMP/xlibre-server-xvfb-${VERSION}-$ARCH-$BUILD.txz
)

# Build the xlibre-server-xephyr package:
rm -rf $TMP/package-xlibre-server-xephyr
mkdir -p $TMP/package-xlibre-server-xephyr/usr/bin
mv $PKG/usr/bin/Xephyr $TMP/package-xlibre-server-xephyr/usr/bin
mkdir -p $TMP/package-xlibre-server-xephyr/usr/man/man1
mv $PKG/usr/man/man1/Xephyr.1.gz $TMP/package-xlibre-server-xephyr/usr/man/man1
mkdir -p $TMP/package-xlibre-server-xephyr/install
cat $CWD/slack-desc.xlibre-server-xephyr > $TMP/package-xlibre-server-xephyr/install/slack-desc
( cd $TMP/package-xlibre-server-xephyr
  /sbin/makepkg -l y -c n $TMP/xlibre-server-xephyr-${VERSION}-$ARCH-$BUILD.txz
)

# Build the main xlibre-server package:
cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz