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pacman/contrib/bacman
Allan McRae fd38319106 bacman: unify package creation with makepkg
Currently bacman always compresses with gzip now matter what PKGEXT is
set to.  Rework the entire package creation process to be similar to
that in makepkg.  This also make the explicit assumption that PKGEXT is
defined in makepkg.conf.

Thanks to Nelson Chan <khcha.n.el@gmail.com> for the original patch to
fix the incorrect package compression.

Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
2010-09-15 08:54:34 -05:00

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#!/bin/bash
#
# bacman: recreate a package from a running system
# This script rebuilds an already installed package using metadata
# stored into the pacman database and system files
#
# (c) 2008 - locci <carlocci_at_gmail_dot_com>
#
# 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, see <http://www.gnu.org/licenses/>.
#
readonly progname="bacman"
readonly progver="0.2.1"
#
# User Friendliness
#
function usage(){
echo "This program recreates a package using pacman's db and system files"
echo "Usage: $progname <installed package name>"
echo "Example: $progname kernel26"
}
if [ $# -ne 1 ] ; then
usage
exit 1
fi
if [ "$1" = "--help" -o "$1" = "-h" ] ; then
usage
exit 0
fi
if [ "$1" = "--version" -o "$1" = "-v" ]; then
echo "$progname version $progver"
echo "Copyright (C) 2008 locci"
exit 0
fi
#
# Fakeroot support
#
if [ $EUID -gt 0 ]; then
if [ -f /usr/bin/fakeroot ]; then
echo "Entering fakeroot environment"
export INFAKEROOT="1"
/usr/bin/fakeroot -u -- $0 $1
exit $?
else
echo "WARNING: installing fakeroot or running ${progname} as root is required to"
echo " preserve the ownership permissions of files in some packages"
echo ""
fi
fi
#
# Setting environmental variables
#
if [ ! -r /etc/pacman.conf ]; then
echo "ERROR: unable to read /etc/pacman.conf"
exit 1
fi
eval $(awk '/DBPath/ {print $1$2$3}' /etc/pacman.conf)
pac_db="${DBPath:-/var/lib/pacman/}/local"
if [ ! -r /etc/makepkg.conf ]; then
echo "ERROR: unable to read /etc/makepkg.conf"
exit 1
fi
source "/etc/makepkg.conf"
if [ -r ~/.makepkg.conf ]; then
source ~/.makepkg.conf
fi
pkg_arch=${CARCH:-'unknown'}
pkg_dest="${PKGDEST:-$PWD}"
pkg_pkger=${PACKAGER:-'Unknown Packager'}
pkg_name="$1"
pkg_dir="$(echo $pac_db/$pkg_name-[0-9]*)"
pkg_namver="${pkg_dir##*/}"
#
# Checks everything is in place
#
if [ ! -d "$pac_db" ] ; then
echo "ERROR: pacman database directory ${pac_db} not found"
exit 1
fi
if [ ! -d "$pkg_dir" ] ; then
echo "ERROR: package ${pkg_name} not found in pacman database"
exit 1
fi
#
# Begin
#
echo Package: ${pkg_namver}
work_dir=$(mktemp -d -p /tmp)
cd "$work_dir" || exit 1
#
# File copying
#
echo "Copying package files..."
cat "$pkg_dir"/files |
while read i; do
if [ -z "$i" ] ; then
continue
fi
if [[ "$i" =~ %[A-Z]*% ]] ; then
current=$i
continue
fi
case $current in
%FILES%)
ret=0
if [ -e "/$i" ]; then
bsdtar -cnf - "/$i" 2> /dev/null | bsdtar -xpf -
# Workaround to bsdtar not reporting a missing file as an error
if [ ! -e "$work_dir/$i" -a ! -L "$work_dir/$i" ]; then
echo ""
echo "ERROR: unable to add /$i to the package"
echo " If your user does not have permssion to read this file then"
echo " you will need to run $progname as root"
rm -rf "$work_dir"
exit 1
fi
else
echo ""
echo "WARNING: package file /$i is missing"
echo ""
fi
;;
esac
done
ret=$?
if [ $ret -ne 0 ]; then
rm -rf "$work_dir"
exit 1
fi
pkg_size=$(du -sk | awk '{print $1 * 1024}')
#
# .PKGINFO stuff
#
echo Generating .PKGINFO metadata...
echo "# Generated by $progname $progver" > .PKGINFO
if [ "$INFAKEROOT" = "1" ]; then
echo "# Using $(fakeroot -v)" >> .PKGINFO
fi
echo "# $(LC_ALL=C date)" >> .PKGINFO
echo "#" >> .PKGINFO
cat "$pkg_dir"/{desc,files,depends} |
while read i; do
if [[ -z "$i" ]]; then
continue;
fi
if [[ "$i" =~ %[A-Z]*% ]] ; then
current=$i
continue
fi
case "$current" in
# desc
%NAME%)
echo "pkgname = $i" >> .PKGINFO
;;
%VERSION%)
echo "pkgver = $i" >> .PKGINFO
;;
%DESC%)
echo "pkgdesc = $i" >> .PKGINFO
;;
%URL%)
echo "url = $i" >> .PKGINFO
;;
%LICENSE%)
echo "license = $i" >> .PKGINFO
;;
%ARCH%)
echo "arch = $i" >> .PKGINFO
;;
%BUILDDATE%)
echo "builddate = $(date -u "+%s")" >> .PKGINFO
;;
%PACKAGER%)
echo "packager = $pkg_pkger" >> .PKGINFO
;;
%SIZE%)
echo "size = $pkg_size" >> .PKGINFO
;;
%GROUPS%)
echo "group = $i" >> .PKGINFO
;;
%REPLACES%)
echo "replaces = $i" >> .PKGINFO
;;
%FORCE%)
echo "force = true" >> .PKGINFO
;;
# files
%BACKUP%)
# strip the md5sum after the tab
echo "backup = ${i%%$'\t'*}" >> .PKGINFO
;;
# depends
%DEPENDS%)
echo "depend = $i" >> .PKGINFO
;;
%OPTDEPENDS%)
echo "optdepend = $i" >> .PKGINFO
;;
%CONFLICTS%)
echo "conflict = $i" >> .PKGINFO
;;
%PROVIDES%)
echo "provides = $i" >> .PKGINFO
;;
esac
done
comp_files=".PKGINFO"
if [ -f "$pkg_dir/install" ] ; then
cp "$pkg_dir/install" "$work_dir/.INSTALL"
comp_files+=" .INSTALL"
fi
if [ -f $pkg_dir/changelog ] ; then
cp "$pkg_dir/changelog" "$work_dir/.CHANGELOG"
comp_files+=" .CHANGELOG"
fi
#
# Fixes owner:group and permissions for .PKGINFO, .CHANGELOG, .INSTALL
#
chown root:root "$work_dir"/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null
chmod 644 "$work_dir"/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null
#
# Generate the package
#
echo "Generating the package..."
case "$PKGEXT" in
*tar.gz) EXT=${PKGEXT%.gz} ;;
*tar.bz2) EXT=${PKGEXT%.bz2} ;;
*tar.xz) EXT=${PKGEXT%.xz} ;;
*tar) EXT=${PKGEXT} ;;
*) echo "WARNING: '%s' is not a valid archive extension." \
"$PKGEXT" ; EXT=$PKGEXT ;;
esac
pkg_file="$pkg_dest/$pkg_namver-$pkg_arch${PKGEXT}"
ret=0
# when fileglobbing, we want * in an empty directory to expand to
# the null string rather than itself
shopt -s nullglob
# TODO: Maybe this can be set globally for robustness
shopt -s -o pipefail
bsdtar -cf - $comp_files * |
case "$PKGEXT" in
*tar.gz) gzip -c -f -n ;;
*tar.bz2) bzip2 -c -f ;;
*tar.xz) xz -c -z - ;;
*tar) cat ;;
esac > ${pkg_file} || ret=$?
if [ $ret -ne 0 ]; then
echo "ERROR: unable to write package to $pkg_dest"
echo " Maybe the disk is full or you do not have write access"
rm -rf "$work_dir"
exit 1
fi
rm -rf "$work_dir"
echo Done
exit 0
# vim: set ts=2 sw=2 noet: