381 lines
8.9 KiB
Bash
381 lines
8.9 KiB
Bash
#!/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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# Copyright (c) 2008 locci <carlocci_at_gmail_dot_com>
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# Copyright (c) 2008-2016 Pacman Development Team <pacman-dev@archlinux.org>
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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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shopt -s extglob
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shopt -s nullglob
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declare -r myname='bacman'
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declare -r myver='@PACKAGE_VERSION@'
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USE_COLOR='y'
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INCLUDE_PACNEW='n'
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# Required for fakeroot because options are shifted off the array.
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ARGS=("$@")
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m4_include(../scripts/library/output_format.sh)
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m4_include(../scripts/library/parseopts.sh)
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# Lazy recursive clean up of temporary dirs
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work_dir_root="${TMPDIR:-/tmp}/bacman"
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clean_up() {
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rm -rf "$work_dir_root".*
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echo
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exit
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}
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# Trap termination signals
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trap clean_up SIGHUP SIGINT SIGTERM
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#
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# User Friendliness
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#
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usage() {
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echo "${myname} (pacman) v${myver}"
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echo
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echo "Recreate a package using pacman's database and system files"
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echo
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echo "Usage: ${myname} [--nocolor] [--pacnew] <installed package name>"
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echo
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echo "Example: ${myname} linux-headers"
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}
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version() {
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printf "%s %s\n" "$myname" "$myver"
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echo 'Copyright (C) 2008 locci <carlocci_at_gmail_dot_com>'
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echo 'Copyright (C) 2008-2016 Pacman Development Team <pacman-dev@archlinux.org>'
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}
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# Printing the usage information takes precedence over every other parameter
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for option in "$@"; do
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[[ $option == "-h" || $option == "--help" ]] && usage && exit 0
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done
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# Parse arguments
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OPT_SHORT='mv'
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OPT_LONG=('nocolor' 'pacnew' 'version')
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if ! parseopts "$OPT_SHORT" "${OPT_LONG[@]}" -- "$@"; then
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usage
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exit 1
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fi
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set -- "${OPTRET[@]}"
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unset OPT_SHORT OPT_LONG OPTRET
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while :; do
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case "$1" in
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-m|--nocolor)
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USE_COLOR='n' ;;
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--pacnew)
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INCLUDE_PACNEW='y' ;;
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-v|--version)
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version
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exit 0 ;;
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--)
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shift
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break 2 ;;
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esac
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shift
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done
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# Configure colored output
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m4_include(../scripts/library/term_colors.sh)
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# Retrieve the list of packages to be assembled and break if none was specified
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pkg_list=($*)
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if [[ ${#pkg_list[@]} == 0 ]]; then
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usage
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exit 1
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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 )); then
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if [[ -f /usr/bin/fakeroot ]]; then
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msg "Entering fakeroot environment"
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export INFAKEROOT="1"
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/usr/bin/fakeroot -u -- "$0" "${ARGS[@]}"
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exit $?
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else
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warning "installing fakeroot or running $myname as root is required to"
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plain " preserve the ownership permissions of files in some packages\n"
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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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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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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_dest="${PKGDEST:-$PWD}"
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pkg_pkger=${PACKAGER:-'Unknown Packager'}
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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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error "pacman database directory ${pac_db} not found"
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exit 1
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fi
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# Assemble a single package: $1 = pkgname
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fakebuild() {
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pkg_name="$1"
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pkg_dir=("$pac_db/$pkg_name"-+([^-])-+([^-]))
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pkg_namver=("${pkg_dir[@]##*/}")
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# Checks database for specified package
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if (( ${#pkg_dir[@]} != 1 )); then
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error "%d entries for package %s found in pacman database" \
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${#pkg_dir[@]} "${pkg_name}"
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msg2 "%s" "${pkg_dir[@]}"
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exit 1
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fi
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if [[ ! -d $pkg_dir ]]; then
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error "package %s is found in pacman database," "${pkg_name}"
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plain " but '%s' is not a directory" "${pkg_dir}"
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exit 1
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fi
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# Create working directory
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msg "Package: ${pkg_namver}"
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work_dir=$(mktemp -d "${work_dir_root}.XXXXXXXXXX")
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cd "$work_dir" || exit 1
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# Assemble list of files which belong to the package and tar them
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msg2 "Copying package 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 "$current" in
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%FILES%)
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local_file="/$i"
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package_file="$work_dir/$i"
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if [[ ! -e $local_file ]]; then
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warning "package file $local_file is missing"
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continue
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fi
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;;
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%BACKUP%)
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# Get the MD5 checksum.
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original_md5="${i##*$'\t'}"
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# Strip the md5sum after the tab.
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i="${i%$'\t'*}"
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local_file="/$i.pacnew"
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package_file="$work_dir/$i"
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# Include unmodified .pacnew files.
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local_md5="$(md5sum "$local_file" | cut -d' ' -f1)"
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if [[ $INCLUDE_PACNEW == 'n' ]] \
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|| [[ ! -e $local_file ]] \
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|| [[ $local_md5 != $original_md5 ]]; then
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# Warn about modified files.
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local_md5="$(md5sum "/$i" | cut -d' ' -f1)"
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if [[ $local_md5 != $original_md5 ]]; then
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warning "package file /$i has been modified"
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fi
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# Let the normal file be included in the %FILES% list.
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continue
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fi
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;;
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*)
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continue
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;;
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esac
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# Tar files
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ret=0
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bsdtar -cnf - -s'/.pacnew$//' "$local_file" 2> /dev/null | bsdtar -xpf - 2> /dev/null
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# Workaround to bsdtar not reporting a missing file as an error
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if ! [[ -e $package_file || -L $package_file ]]; then
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error "unable to add $local_file to the package"
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plain " If your user does not have permission to read this file, then"
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plain " you will need to run $myname as root."
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rm -rf "$work_dir"
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exit 1
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fi
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done < "$pkg_dir"/files
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ret=$?
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if (( ret )); then
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rm -rf "$work_dir"
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exit 1
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fi
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# Calculate package size
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pkg_size=$(du -sk | awk '{print $1 * 1024}')
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# Reconstruct .PKGINFO from database
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# TODO adopt makepkg's write_pkginfo() into this or scripts/library
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msg2 "Generating .PKGINFO metadata..."
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echo "# Generated by $myname $myver" > .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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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 = $i" >> .PKGINFO
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pkg_arch="$i"
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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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%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 < <(cat "$pkg_dir"/{desc,files})
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comp_files=".PKGINFO"
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# Add instal file if present
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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" "$work_dir/.CHANGELOG"
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comp_files+=" .CHANGELOG"
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fi
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# Fixes owner:group and permissions for .PKGINFO, .CHANGELOG, .INSTALL
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chown root:root "$work_dir"/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null
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chmod 644 "$work_dir"/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null
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# Generate the package
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msg2 "Generating the package..."
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pkg_file="$pkg_dest/$pkg_namver-$pkg_arch${PKGEXT}"
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ret=0
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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.Z) compress -c -f ;;
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*tar) cat ;;
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*) warning "'%s' is not a valid archive extension." \
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"$PKGEXT"; cat ;;
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esac > "${pkg_file}"; ret=$?
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# Move compressed package to destination
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if (( ret )); then
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error "Unable to write package to $pkg_dest"
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plain " Maybe the disk is full or you do not have write access"
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rm -rf "$work_dir"
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exit 1
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fi
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# Clean up working directory
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rm -rf "$work_dir"
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}
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for PKG in ${pkg_list[@]}; do
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fakebuild $PKG
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done
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msg "Done."
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exit 0
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# vim: set noet:
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