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-rwxr-xr-xcontrib/bacman.in307
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diff --git a/contrib/bacman.in b/contrib/bacman.in
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+#!@BASH_SHELL@
+#
+# 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 @sysconfdir@/pacman.conf ]; then
+ echo "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
+ echo "ERROR: unable to read @sysconfdir@/makepkg.conf"
+ exit 1
+fi
+
+source "@sysconfdir@/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
+ ;;
+
+ # 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:
+