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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
#
# Copyright (c) 2008 locci <carlocci_at_gmail_dot_com>
# Copyright (c) 2008-2016 Pacman Development Team <pacman-dev@archlinux.org>
#
# 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/>.
#
shopt -s extglob
shopt -s nullglob
declare -r myname='bacman'
declare -r myver='@PACKAGE_VERSION@'
USE_COLOR='y'
INCLUDE_PACNEW='n'
# Required for fakeroot because options are shifted off the array.
ARGS=("$@")
m4_include(../scripts/library/output_format.sh)
m4_include(../scripts/library/parseopts.sh)
# Lazy recursive clean up of temporary dirs
work_dir_root="${TMPDIR:-/tmp}/bacman"
clean_up() {
rm -rf "$work_dir_root".*
echo
exit
}
# Trap termination signals
trap clean_up SIGHUP SIGINT SIGTERM
#
# User Friendliness
#
usage() {
echo "${myname} (pacman) v${myver}"
echo
echo "Recreate a package using pacman's database and system files"
echo
echo "Usage: ${myname} [--nocolor] [--pacnew] <installed package name>"
echo
echo "Example: ${myname} linux-headers"
}
version() {
printf "%s %s\n" "$myname" "$myver"
echo 'Copyright (C) 2008 locci <carlocci_at_gmail_dot_com>'
echo 'Copyright (C) 2008-2016 Pacman Development Team <pacman-dev@archlinux.org>'
}
# Printing the usage information takes precedence over every other parameter
for option in "$@"; do
[[ $option == "-h" || $option == "--help" ]] && usage && exit 0
done
# Parse arguments
OPT_SHORT='mv'
OPT_LONG=('nocolor' 'pacnew' 'version')
if ! parseopts "$OPT_SHORT" "${OPT_LONG[@]}" -- "$@"; then
usage
exit 1
fi
set -- "${OPTRET[@]}"
unset OPT_SHORT OPT_LONG OPTRET
while :; do
case "$1" in
-m|--nocolor)
USE_COLOR='n' ;;
--pacnew)
INCLUDE_PACNEW='y' ;;
-v|--version)
version
exit 0 ;;
--)
shift
break 2 ;;
esac
shift
done
# Configure colored output
m4_include(../scripts/library/term_colors.sh)
# Retrieve the list of packages to be assembled and break if none was specified
pkg_list=($*)
if [[ ${#pkg_list[@]} == 0 ]]; then
usage
exit 1
fi
#
# Fakeroot support
#
if (( EUID )); then
if [[ -f /usr/bin/fakeroot ]]; then
msg "Entering fakeroot environment"
export INFAKEROOT="1"
/usr/bin/fakeroot -u -- "$0" "${ARGS[@]}"
exit $?
else
warning "installing fakeroot or running $myname as root is required to"
plain " preserve the ownership permissions of files in some packages\n"
fi
fi
#
# Setting environmental variables
#
if [[ ! -r @sysconfdir@/pacman.conf ]]; then
error "unable to read @sysconfdir@/pacman.conf"
exit 1
fi
eval $(awk '/DBPath/ {print $1$2$3}' @sysconfdir@/pacman.conf)
pac_db="${DBPath:-@localstatedir@/lib/pacman/}/local"
if [[ ! -r @sysconfdir@/makepkg.conf ]]; then
error "unable to read @sysconfdir@/makepkg.conf"
exit 1
fi
source "@sysconfdir@/makepkg.conf"
if [[ -r ~/.makepkg.conf ]]; then
source ~/.makepkg.conf
fi
pkg_dest="${PKGDEST:-$PWD}"
pkg_pkger=${PACKAGER:-'Unknown Packager'}
#
# Checks everything is in place
#
if [[ ! -d $pac_db ]]; then
error "pacman database directory ${pac_db} not found"
exit 1
fi
# Assemble a single package: $1 = pkgname
fakebuild() {
pkg_name="$1"
pkg_dir=("$pac_db/$pkg_name"-+([^-])-+([^-]))
pkg_namver=("${pkg_dir[@]##*/}")
# Checks database for specified package
if (( ${#pkg_dir[@]} != 1 )); then
error "%d entries for package %s found in pacman database" \
${#pkg_dir[@]} "${pkg_name}"
msg2 "%s" "${pkg_dir[@]}"
exit 1
fi
if [[ ! -d $pkg_dir ]]; then
error "package %s is found in pacman database," "${pkg_name}"
plain " but '%s' is not a directory" "${pkg_dir}"
exit 1
fi
# Create working directory
msg "Package: ${pkg_namver}"
work_dir=$(mktemp -d "${work_dir_root}.XXXXXXXXXX")
cd "$work_dir" || exit 1
# Assemble list of files which belong to the package and tar them
msg2 "Copying package files..."
while read i; do
if [[ -z $i ]]; then
continue
fi
if [[ $i == %+([A-Z])% ]]; then
current=$i
continue
fi
case "$current" in
%FILES%)
local_file="/$i"
package_file="$work_dir/$i"
if [[ ! -e $local_file ]]; then
warning "package file $local_file is missing"
continue
fi
;;
%BACKUP%)
# Get the MD5 checksum.
original_md5="${i##*$'\t'}"
# Strip the md5sum after the tab.
i="${i%$'\t'*}"
local_file="/$i.pacnew"
package_file="$work_dir/$i"
# Include unmodified .pacnew files.
local_md5="$(md5sum "$local_file" | cut -d' ' -f1)"
if [[ $INCLUDE_PACNEW == 'n' ]] \
|| [[ ! -e $local_file ]] \
|| [[ $local_md5 != $original_md5 ]]; then
# Warn about modified files.
local_md5="$(md5sum "/$i" | cut -d' ' -f1)"
if [[ $local_md5 != $original_md5 ]]; then
warning "package file /$i has been modified"
fi
# Let the normal file be included in the %FILES% list.
continue
fi
;;
*)
continue
;;
esac
# Tar files
ret=0
bsdtar -cnf - -s'/.pacnew$//' "$local_file" 2> /dev/null | bsdtar -xpf - 2> /dev/null
# Workaround to bsdtar not reporting a missing file as an error
if ! [[ -e $package_file || -L $package_file ]]; then
error "unable to add $local_file to the package"
plain " If your user does not have permission to read this file, then"
plain " you will need to run $myname as root."
rm -rf "$work_dir"
exit 1
fi
done < "$pkg_dir"/files
ret=$?
if (( ret )); then
rm -rf "$work_dir"
exit 1
fi
# Calculate package size
pkg_size=$(du -sk | awk '{print $1 * 1024}')
# Reconstruct .PKGINFO from database
# TODO adopt makepkg's write_pkginfo() into this or scripts/library
msg2 "Generating .PKGINFO metadata..."
echo "# Generated by $myname $myver" > .PKGINFO
if [[ $INFAKEROOT == "1" ]]; then
echo "# Using $(fakeroot -v)" >> .PKGINFO
fi
echo "# $(LC_ALL=C date)" >> .PKGINFO
echo "#" >> .PKGINFO
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 = $i" >> .PKGINFO
pkg_arch="$i"
;;
%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
;;
%DEPENDS%)
echo "depend = $i" >> .PKGINFO
;;
%OPTDEPENDS%)
echo "optdepend = $i" >> .PKGINFO
;;
%CONFLICTS%)
echo "conflict = $i" >> .PKGINFO
;;
%PROVIDES%)
echo "provides = $i" >> .PKGINFO
;;
%BACKUP%)
# Strip the md5sum after the tab
echo "backup = ${i%%$'\t'*}" >> .PKGINFO
;;
esac
done < <(cat "$pkg_dir"/{desc,files})
comp_files=".PKGINFO"
# Add instal file if present
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 "$work_dir"/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null
# Generate the package
msg2 "Generating the package..."
pkg_file="$pkg_dest/$pkg_namver-$pkg_arch${PKGEXT}"
ret=0
# 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.Z) compress -c -f ;;
*tar) cat ;;
*) warning "'%s' is not a valid archive extension." \
"$PKGEXT"; cat ;;
esac > "${pkg_file}"; ret=$?
# Move compressed package to destination
if (( ret )); then
error "Unable to write package to $pkg_dest"
plain " Maybe the disk is full or you do not have write access"
rm -rf "$work_dir"
exit 1
fi
# Clean up working directory
rm -rf "$work_dir"
}
for PKG in ${pkg_list[@]}; do
fakebuild $PKG
done
msg "Done."
exit 0
# vim: set noet:
|