#! /bin/bash
#   pbuilder -- personal Debian package builder
#   Copyright (C) 2001-2003,2005-2007 Junichi Uekawa
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA

set -e

. "${BASH_SOURCE%/*}/pbuilder-checkparams"

if [ -n "$DISTRIBUTION" ] && [ "$OVERRIDE_APTLINES" = "yes" ]; then
    log.i "Upgrading for distribution $DISTRIBUTION" 
fi
if [ "${PBUILDER_DEBUGMODE}" = "yes" ]; then
    TRAP="echo ignoring trap "
else
    TRAP=trap
fi

# show the current time before doing anything.
echobacktime

extractbuildplace
$TRAP umountproc_cleanbuildplace_trap exit sighup

log.i "Refreshing the base.tgz "
log.i "upgrading packages"
$CHROOTEXEC /usr/bin/apt-get -q "${APTGETOPT[@]}" update


# automatically add packages needed for optional features to the chroot
case "$(readlink -e "$PBUILDERSATISFYDEPENDSCMD")" in
  *-aptitude)
    EXTRAPACKAGES="$EXTRAPACKAGES aptitude"
  ;;
  *)
    EXTRAPACKAGES="$EXTRAPACKAGES aptitude-"
  ;;
esac

if [ -n "$CCACHEDIR" ]; then
    EXTRAPACKAGES="$EXTRAPACKAGES ccache"
else
    EXTRAPACKAGES="$EXTRAPACKAGES ccache-"
fi

if [ "$DEBDELTA" = "yes" ]; then
    EXTRAPACKAGES="$EXTRAPACKAGES debdelta python-apt xdelta3"
else
    EXTRAPACKAGES="$EXTRAPACKAGES debdelta-"
fi

if [ -n "$REMOVEPACKAGES" ]; then
    # FIXME this wont work if the packages have some reverse dependencies;
    # apt-get can also remove package, either with apt-get remove or purge, or
    # with apt-get install name-of-pkg- (i.e. a minus sign after the package
    # name)
    $CHROOTEXEC /usr/bin/dpkg --purge $REMOVEPACKAGES
fi
recover_aptcache

$TRAP saveaptcache_umountproc_cleanbuildplace_trap exit sighup
if [ "$DEBDELTA" = "yes" ]; then
    if $CHROOTEXEC which debdelta-upgrade > /dev/null 2>&1 ; then
        log.i "Using debdelta-upgrade for available deltas"
        if $CHROOTEXEC debdelta-upgrade ; then
            :
        else
            log.w "debdelta failed, continue and use plain apt to update the system"
        fi
    else
        log.w "debdelta is enabled but not (yet) installed, not using it"
    fi
fi

$CHROOTEXEC /usr/bin/apt-get -q -y "${APTGETOPT[@]}" "${FORCE_CONFNEW[@]}" dist-upgrade
# autoremove: Ignore error in case of etch because apt in etch doesn't
# support autoremove. TODO: Do not ignore error when etch is no longer
# supported.
$CHROOTEXEC /usr/bin/apt-get -q -y "${APTGETOPT[@]}" autoremove || true
$CHROOTEXEC /usr/bin/apt-get -q -y "${APTGETOPT[@]}" install \
    build-essential \
    dpkg-dev \
    $EXTRAPACKAGES
# debdelta dependencies are broken (#545831)
if [ "$DEBDELTA" = "yes" ]; then
    $CHROOTEXEC apt-mark auto python-apt xdelta3
fi

save_aptcache
add_additional_aptkeyrings

# optionally auto-clean apt-cache
if [ "${AUTOCLEANAPTCACHE}" = "yes" -a -n "$APTCACHE" ]; then
    log.i "Cleaning the cached apt archive"
    $CHROOTEXEC /usr/bin/apt-get autoclean || true
    find "$APTCACHE/" -maxdepth 1 -name \*.deb | \
	while read A; do
	    if [ ! -f "$BUILDPLACE/var/cache/apt/archives/$(basename "$A")" -a \
		-f "$A" ]; then
		log.i "obsolete cache content "$(basename "$A")" removed"
		rm -f "$A" || true
	    fi
    done
fi

$TRAP umountproc_cleanbuildplace_trap exit sighup
executehooks "E"

umountproc
$CHROOTEXEC /usr/bin/apt-get clean || true

$TRAP cleanbuildplace_trap exit sighup
if [ ! "${INTERNAL_BUILD_UML}" = "yes" ]; then
    create_basetgz
fi
if [ "${PRESERVE_BUILDPLACE}" = "yes" ]; then
    :
else
    :
    cleanbuildplace
fi
trap - exit sighup
exit 0