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