#!/bin/sh
#-- gdm for Slackware --
# Build script by Phantom X <megaphantomx@bol.com.br>
# Suggested usage: $ gdm.SlackBuild 2>&1 | tee build.log
#--
# Copyright 2008, 2009, 2010 Phantom X, Goiania, Brazil.
# Copyright 2006 Martijn Dekker, Groningen, Netherlands.
#
# 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.

# http://download.gnome.org/sources/gdm

PACKAGER_ID=${PACKAGER_ID:-$USER}
PACKAGER=${PACKAGER:-$USER@$HOSTNAME}

# Set YES for native build with gcc >= 4.2
SB_NATIVE=${SB_NATIVE:-NO}

CWD=$(pwd)
TMP=${TMP:-/tmp}
if [ ! -d ${TMP} ]; then
  mkdir -p ${TMP}
fi

NAME=gdm
PKG=${PKG:-${TMP}/package-${NAME}}

VERSION=${VERSION:-2.20.10}
SVER=$(echo ${VERSION} | cut -d . -f1-2)
FFVER=${FFVER:-20070319}
if [ "${SB_NATIVE}" = "YES" ] ;then
  ARCH=${ARCH:-$(uname -m)}
else
  ARCH=${ARCH:-i686}
fi
if [ "${ARCH}" = "x86_64" ] ;then
  SLKTARGET=${SLKTARGET:-x86_64}
else
  SLKTARGET=${SLKTARGET:-i486}
fi
SLKDTARGET=${SLKDTARGET:-slackware}
BUILD=${BUILD:-4}
NJOBS=${NJOBS:-$(( $(getconf _NPROCESSORS_ONLN) + 1 ))}
DOCDIR=${PKG}/usr/doc/${NAME}-${VERSION}
SBDIR=${PKG}/usr/src/slackbuilds/gnome/${NAME}
PKGDEST=${PKGDEST:-${CWD}}
PKGFORMAT=${PKGFORMAT:-txz}
PKGNAME=${NAME}-$(echo ${VERSION} | tr - . )-${ARCH}-${BUILD}${PACKAGER_ID}

DATE=$(LC_ALL=C date +%d-%b-%Y)

grep --quiet '^gdm:' /etc/group && SB_HGROUP=1
grep --quiet '^gdm:' /etc/passwd && SB_HUSER=1

SRCDIR=${NAME}-${VERSION}
SRCARCHIVE=${SRCDIR}.tar.bz2
SRCARCHIVE2=fedora-faces-${FFVER}.tar.bz2

DL_PROG=${DL_PROG:-wget}
DL_TO=${DL_TO:-5}
DL_OPTS=${DL_OPTS:-"--timeout=${DL_TO}"}
GNOME_MIRROR=${GNOME_MIRROR:-http://ftp.gnome.org/pub/GNOME/sources}
DL_URL="${GNOME_MIRROR}/${NAME}/${SVER}/${SRCARCHIVE}"

# if source is not present, download in source rootdir if possible
test -r ${CWD}/${SRCARCHIVE} || ${DL_PROG} ${DL_OPTS} ${DL_URL} || exit 1

if [ "${SB_NATIVE}" = "YES" ] ;then
  SLKCFLAGS="-O2 -march=native -mtune=native ${SB_ECFLAGS} -pipe"
else
  case "${ARCH}" in
    i[3-6]86)    SLKCFLAGS="-O2 -march=${ARCH} -mtune=i686"
                 ;;
    s390)        SLKCFLAGS="-O2"
                 ;;
    x86_64)      SLKCFLAGS="-O2 -fPIC"
                 ;;
  esac
fi
if [ "${ARCH}" = "x86_64" ] ;then
  LIBDIRSUFFIX="64"
  SLKCFLAGS="${SLKCFLAGS} -fPIC"
else
  LIBDIRSUFFIX=""
fi

if [ -d ${PKG} ]; then
  # Clean up a previous build
  rm -rf ${PKG}
fi
mkdir -p ${PKG}

cd ${TMP}
rm -rf ${SRCDIR}
tar -xvf ${CWD}/${SRCARCHIVE} || exit 1
cd ${SRCDIR} || exit 1
if [ -f ${CWD}/${SRCARCHIVE2} ] ;then
  tar -xvf ${CWD}/${SRCARCHIVE2} || exit 1
fi

chmod -R u+w,go+r-w,a-s .

# zcat ${CWD}/${NAME}.patch.gz | patch -p0 -E --backup --verbose || exit 1
if [ -r ${CWD}/apply-patches.sh ]; then
  . ${CWD}/apply-patches.sh || exit 1
fi

sed -i -e 's|X11R6/||g' configure.ac || exit 1
sed -i -e 's|LIBWRAP_PATH=""|LIBWRAP_PATH="-lwrap"|g' \
          configure configure.ac || exit 1

intltoolize --force --copy || exit 1
autoreconf -ivf || exit 1

CFLAGS="${SLKCFLAGS}" \
CXXFLAGS="${SLKCFLAGS}" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sbindir=/usr/bin \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --infodir=/usr/info \
  --mandir=/usr/man \
  --docdir=/usr/doc/${NAME}-${VERSION} \
  --disable-scrollkeeper \
  --with-dmconfdir=/usr/share/gdm/dm \
  --enable-authentication-scheme=shadow \
  --with-console-kit \
  --build=${SLKTARGET}-${SLKDTARGET}-linux || exit 1

make -j${NJOBS} || make || exit 1

mkdir -p ${PKG}/etc/gdm/Init
mkdir -p ${PKG}/etc/gdm/PreSession
mkdir -p ${PKG}/etc/gdm/PostSession

make install DESTDIR=${PKG} || exit 1

# Fix wrong path for Xsession file.
sed -i -e '/^BaseXsession=/s|=.*$|=/etc/gdm/Xsession|g' \
           ${PKG}/usr/share/gdm/defaults.conf

# create log dir
mkdir -p ${PKG}/var/log/gdm

rm -f ${PKG}/usr/lib*/gtk-2.0/modules/*.a
rm -f ${PKG}/usr/lib*/gtk-2.0/modules/*.la

# remove the other gnome session file, since we put it in gnome-session
rm -rf ${PKG}/usr/share/xsessions

# This got given an unfortunate name, so revert the name for now.
# See https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=234218
# and http://bugzilla.gnome.org/show_bug.cgi?id=403690
zcat ${CWD}/default.desktop.gz \
  > ${PKG}/usr/share/gdm/BuiltInSessions/default.desktop || exit 1

# fix the "login photo" file
echo "NoDisplay=true" \
  >> ${PKG}/usr/share/gdm/applications/gdmphotosetup.desktop

desktop-file-install --vendor gnome --delete-original  \
  --dir ${PKG}/usr/share/gdm/applications                  \
  --remove-category Application			       \
  --remove-key="Encoding" \
  ${PKG}/usr/share/gdm/applications/gdmsetup.desktop || exit 1

desktop-file-install --vendor gnome --delete-original  \
  --dir ${PKG}/usr/share/gdm/applications \
  --remove-category Application \
  --remove-key="Encoding" \
  ${PKG}/usr/share/gdm/applications/gdmphotosetup.desktop || exit 1

desktop-file-install --vendor "" --delete-original \
  --dir ${PKG}/usr/share/gdm/applications \
  --remove-category Application \
  --remove-key="Encoding" \
  ${PKG}/usr/share/gdm/applications/gdmflexiserver.desktop || exit 1

desktop-file-install --vendor "" --delete-original \
  --dir ${PKG}/usr/share/gdm/applications \
  --remove-category Application \
  --remove-key="Encoding" \
  ${PKG}/usr/share/gdm/applications/gdmflexiserver-xnest.desktop || exit 1

# broken install-data-local in gui/Makefile.am makes this necessary
( cd ${PKG}/usr/bin && ln -sf gdmXnestchooser gdmXnest )

rm -rf ${PKG}/var/scrollkeeper

# grant access to alsa and oss devices for the gdm user
mkdir -p ${PKG}/usr/share/hal/fdi/policy/20thirdparty
zcat ${CWD}/90-grant-audio-devices-to-gdm.fdi.gz >\
     ${PKG}/usr/share/hal/fdi/policy/20thirdparty/90-grant-audio-devices-to-gdm.fdi || exit 1

if [ -f ${CWD}/${SRCARCHIVE2} ] ;then
  # replace faces with the ones from fedora-faces
  rm -rf ${PKG}/usr/share/pixmaps/faces
  cp -Rpr faces ${PKG}/usr/share/pixmaps/ || exit 1
fi

mv ${PKG}/etc/gdm/custom.conf \
   ${PKG}/etc/gdm/custom.conf.new || exit 1

mkdir -p ${PKG}/usr/share/gdm/dm/Sessions

mkdir -p ${PKG}/var/lib/gdm/.pulse
chmod 0770 ${PKG}/var/lib/gdm
chmod 0700 ${PKG}/var/lib/gdm/.pulse
zcat ${CWD}/default.pa-for-gdm.gz > ${PKG}/var/lib/gdm/.pulse/default.pa || exit 1
chmod 0600 ${PKG}/var/lib/gdm/.pulse/default.pa

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

mv ${PKG}/etc/gdm/Xsession ${PKG}/etc/gdm/Xsession.new
chmod 0755 ${PKG}/etc/gdm/Xsession*

mkdir -p ${PKG}/etc/X11/xinit/xinitrc.d

# Add a documentation directory:
mkdir -p ${DOCDIR}
cp -a \
  AUTHORS COPYING ChangeLog NEWS README TODO ${CWD}/ChangeLog.SB \
  ${DOCDIR}/
find ${DOCDIR}/ -type d -print0 | xargs -0 chmod 0755
find ${DOCDIR}/ -type f -print0 | xargs -0 chmod 0644

# Compress and link manpages, if any:
if [ -d ${PKG}/usr/share/man ]; then
  mv ${PKG}/usr/share/man ${PKG}/usr/man
  rmdir ${PKG}/usr/share
fi
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 *.?
        # Prevent errors
        rm -f *.gz.gz
      )
    done
  )
fi

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

cat > ${PKG}/install/doinst.sh <<'EOF'
# Figure out our root directory
ROOTDIR=$(pwd)
unset CHROOT
if test "${ROOTDIR}" != "/"; then
 CHROOT="chroot ${ROOTDIR} "
  ROOTDIR="${ROOTDIR}/"
fi

GROUP_ID=42

# Set up groups.
if ! grep --quiet '^gdm:' etc/group ;then
  ${CHROOT} /usr/sbin/groupadd \
            -g ${GROUP_ID} \
            gdm 2> /dev/null
fi

# Set up user: add it if it doesn't exist, update it if it already does.
if OLD_ENTRY=$(grep --max-count=1 '^gdm:' etc/passwd) \
  || OLD_ENTRY=$(grep --max-count=1 \
  ':/var/lib/gdm:[a-z/]*$' etc/passwd)
then
  # Modify existing user
  OLD_USER=$(echo ${OLD_ENTRY} | cut --fields=1 --delimiter=':')
  USER_ID=$(echo ${OLD_ENTRY} | cut --fields=3 --delimiter=':')
  if test "${OLD_USER}" = "gdm"; then
    echo -n "Updating unprivileged user" 1>&2
  else
    echo -ne "Changing unprivileged user \e[1m${OLD_USER}\e[0m to" 1>&2
  fi
  ${CHROOT} /usr/sbin/usermod \
            -d '/var/lib/gdm' \
            -u ${USER_ID} \
            -s /bin/false \
            -g gdm \
            ${OLD_USER}
else
  # Add new user
  echo -n "Creating unprivileged user" 1>&2
  ${CHROOT} /usr/sbin/useradd \
            -c 'GDM' \
            -u ${GROUP_ID} \
            -g gdm \
            -s /bin/false \
            -d '/var/lib/gdm' \
            gdm 2> /dev/null
fi

EOF

cat >> ${PKG}/install/doinst.sh <<EOF
if [ -x usr/bin/scrollkeeper-update ]; then
  \${CHROOT} /usr/bin/scrollkeeper-update -q > /dev/null 2>&1
fi
if [ -x /usr/bin/gtk-update-icon-cache ]; then
  \${CHROOT} /usr/bin/gtk-update-icon-cache -q usr/share/icons/hicolor > /dev/null 2>&1
fi

config() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  # If there's no config file by that name, mv it over:
  if [ ! -r \$OLD ]; then
    mv \$NEW \$OLD
  elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then
    # toss the redundant copy
    rm \$NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}
## List of conf files to check.  The conf files in your package should end in .new
EOF

( cd ${PKG}
  find etc/ -name *.new -exec echo config {} ';' | sort >> ${PKG}/install/doinst.sh
  echo >> ${PKG}/install/doinst.sh
  echo '# Fix permissions' >> ${PKG}/install/doinst.sh
  echo '${CHROOT} /bin/chown root.gdm /var/lib/gdm' >> ${PKG}/install/doinst.sh
  echo '${CHROOT} /bin/chmod 1770 /var/lib/gdm' >> ${PKG}/install/doinst.sh
  echo '${CHROOT} /bin/chown gdm.gdm /var/lib/gdm/.pulse ' >> ${PKG}/install/doinst.sh
  echo '${CHROOT} /bin/chmod 0700 /var/lib/gdm/.pulse' >> ${PKG}/install/doinst.sh
  echo '${CHROOT} /bin/chown gdm.gdm /var/lib/gdm/.pulse/default.pa' >> ${PKG}/install/doinst.sh
  echo '${CHROOT} /bin/chmod 0600 /var/lib/gdm/.pulse/default.pa' >> ${PKG}/install/doinst.sh
)

sed -i "s|_PACKAGER|${PACKAGER}|g; s|_BUILD_DATE|${DATE}|g" \
       ${PKG}/install/slack-desc

# Replicate slackbuild and patches
if [ "${SB_REP}" = "YES" ] ;then
  # Replicate slackbuild and patches
  mkdir -p ${SBDIR}/patches
  install -m0644 ${CWD}/slack-desc ${CWD}/slack-required ${CWD}/ChangeLog.SB \
                 ${CWD}/apply-patches.sh ${CWD}/*.desktop.gz ${CWD}/default.*.gz \
                 ${SBDIR}/
  install -m0755 ${CWD}/${NAME}.SlackBuild \
                 ${SBDIR}/${NAME}.SlackBuild
  install -m0644 ${CWD}/patches/*.gz \
                 ${SBDIR}/patches/
fi

# Build package:
set +o xtrace        # no longer print commands upon execution

ROOTCOMMANDS="set -o errexit -o xtrace ; cd ${PKG} ;
  /bin/chown --recursive root:root .  ;
  [ \"${SB_HGROUP}\" = 1 ] && /bin/chown root.gdm ./var/lib/gdm ;
  /bin/chmod 1770 ./var/lib/gdm ;
  [ \"${SB_HGROUP}\" = 1 ] && [ \"${SB_HUSER}\" = 1 ] && /bin/chown gdm.gdm ./var/lib/gdm/.pulse ./var/lib/gdm/.pulse/default.pa ;
  /bin/chmod 0700 ./var/lib/gdm/.pulse ;
  /bin/chmod 0600 ./var/lib/gdm/.pulse/default.pa ; "

ROOTCOMMANDS="${ROOTCOMMANDS}
  /sbin/makepkg --prepend --linkadd y --chown n ${PKGDEST}/${PKGNAME}.${PKGFORMAT} "

if test ${UID} = 0; then
  eval ${ROOTCOMMANDS}
  set +o xtrace
elif test "$(type -t fakeroot)" = 'file'; then
  echo -e "\e[1mEntering fakeroot environment.\e[0m"
  echo ${ROOTCOMMANDS} | fakeroot
else
  echo -e "\e[1mPlease enter your root password.\e[0m (Consider installing fakeroot.)"
  /bin/su -c "${ROOTCOMMANDS}"
fi

# Clean up the extra stuff:
if [ "$1" = "--cleanup" ]; then
  echo "Cleaning..."
  if [ -d ${TMP}/${SRCDIR} ]; then
    rm -rf ${TMP}/${SRCDIR} && echo "${TMP}/${SRCDIR} cleanup completed"
  fi
  if [ -d ${PKG} ]; then
    rm -rf ${PKG} && echo "${PKG} cleanup completed"
  fi
  rmdir ${TMP} && echo "${TMP} cleanup completed"
fi
exit 0