#! /bin/bash
#   pbuilder -- personal Debian package builder
#   Copyright (C) 2001,2002,2005-2007 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

# functions local to pbuilder-buildpackage

function copydsc () {
    local DSCFILE="$1"
    local TARGET="$2"
    for FILE in \
      "$DSCFILE" \
	$(cat "$DSCFILE" | \
	awk 'BEGIN{p=0} /^$/ {p=0} /^.*:/ {p=0} {if (p){print "'$(dirname "$DSCFILE")'/" $3}} /^Files:/{p=1}' ) ; do
	log "I: copying [$FILE]"
        cp -p "$FILE" "$TARGET" 
    done
}

function checkbuilddep () {
    # call satisfydepends
    local BUILDOPT="--binary-all"
    case "${BINARY_ARCH}" in
	yes) BUILDOPT="--binary-arch";;
	*) ;;
    esac
    if "$PBUILDERSATISFYDEPENDSCMD" --control "$1" --chroot "${BUILDPLACE}" --internal-chrootexec "${CHROOTEXEC}" "${BUILDOPT}" "${PBUILDERSATISFYDEPENDSOPT[@]}"; then
	:
    else
    # If asked to preserve the build place, and pbuilder-satisfydepends
    # didn't taint it, then don't clean it when exiting.
	if [ $? -eq 2 -a "${PRESERVE_BUILDPLACE}" = "yes" ]; then
	    trap umountproc_trap exit sighup
	fi
	log "E: pbuilder-satisfydepends failed."
	exit 2
    fi
    # install extra packages to the chroot
    if [ -n "$EXTRAPACKAGES" ]; then 
	$CHROOTEXEC usr/bin/apt-get -q -y "${APTGETOPT[@]}" install ${EXTRAPACKAGES}
    fi
}

function showbuildbanner () {
    # show some banners for building
    log "I: pbuilder-buildpackage/"$(dpkg --print-architecture) 
    log "I: $1"
}

function cowprotect () {
    # a hack for cowdancer, used when a file is edited in-place;
    # Copy the file to create a new i-node so that hardlinked original is intact
    for A in "$@"; do
	if readlink -f "$A" > /dev/null; then
	    A=$(readlink -f "$A")
	    mv "$A" "$A"~
	    cp -a "$A"~ "$A"
	    rm -f "$A"~
	fi
    done
}

function createbuilduser () {
    # create the build user, if it is necessary and specified.
    if [ -n "$BUILDUSERNAME" -a -n "$BUILDUSERID" ]; then
	if [ -e $BUILDPLACE/etc/shadow ]; then p='x'; else p='*'; fi
	if [ -e $BUILDPLACE/etc/gshadow ]; then g='x'; else g='*'; fi
	if ! grep -q ^$BUILDUSERNAME: $BUILDPLACE/etc/passwd; then
	    cowprotect $BUILDPLACE/etc/passwd
	    echo "$BUILDUSERNAME:$p:$BUILDUSERID:$BUILDUSERID:,,,:/tmp/buildd:/bin/sh" >> $BUILDPLACE/etc/passwd
	fi
	if ! grep -q ^$BUILDUSERNAME: $BUILDPLACE/etc/group; then
	    cowprotect $BUILDPLACE/etc/group
	    echo "$BUILDUSERNAME:$g:$BUILDUSERID:" >> $BUILDPLACE/etc/group
	fi
	if [ -e $BUILDPLACE/etc/shadow ] && ! grep -q ^$BUILDUSERNAME: $BUILDPLACE/etc/shadow; then
	    cowprotect $BUILDPLACE/etc/shadow
	    echo "$BUILDUSERNAME:!:::::::" >> $BUILDPLACE/etc/shadow
	fi
	if [ -e $BUILDPLACE/etc/gshadow ] && ! grep -q ^$BUILDUSERNAME: $BUILDPLACE/etc/gshadow; then
	    cowprotect $BUILDPLACE/etc/gshadow
	    echo "$BUILDUSERNAME:!::" >> $BUILDPLACE/etc/gshadow
	fi
	unset LOGNAME || true
    else
	unset LOGNAME || true
    fi
}

function setup_ccache() {
    if [ -n "$CCACHEDIR" ]; then
        log "I: Setting up ccache"
        if ! [ -d "$BUILDPLACE/$CCACHEDIR" ]; then
            mkdir -p "$BUILDPLACE/$CCACHEDIR"
        fi
        chown -R $BUILDUSERID:$BUILDUSERID "$BUILDPLACE/$CCACHEDIR"
        # Unfortunate difference between pbuilder-style and ccache-style config
        # env vars   :-/
        export CCACHE_DIR="$CCACHEDIR"
    fi
}