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-rwxr-xr-xcontrib/bacman.sh.in307
1 files changed, 307 insertions, 0 deletions
diff --git a/contrib/bacman.sh.in b/contrib/bacman.sh.in
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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/>.
+#
+
+shopt -s extglob
+shopt -s nullglob
+
+declare -r myname='bacman'
+declare -r myver='@PACKAGE_VERSION@'
+
+#
+# User Friendliness
+#
+usage() {
+ echo "This program recreates a package using pacman's db and system files"
+ echo "Usage: $myname <installed package name>"
+ echo "Example: $myname kernel26"
+}
+
+version() {
+ printf "%s %s\n" "$myname" "$myver"
+ echo 'Copyright (C) 2008 locci <carlocci_at_gmail_dot_com>'
+}
+
+if (( $# != 1 )); then
+ usage
+ exit 1
+fi
+
+if [[ $1 = -@(h|-help) ]]; then
+ usage
+ exit 0
+elif [[ $1 = -@(V|-version) ]]; then
+ version
+ exit 0
+fi
+
+#
+# Fakeroot support
+#
+if (( EUID )); then
+ if [[ -f /usr/bin/fakeroot ]]; then
+ echo "Entering fakeroot environment"
+ export INFAKEROOT="1"
+ /usr/bin/fakeroot -u -- "$0" "$@"
+ exit $?
+ else
+ echo "WARNING: installing fakeroot or running $myname 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="$1"
+pkg_dir=("$pac_db/$pkg_name"-+([^-])-+([^-]))
+pkg_namver=("${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 (( ${#pkg_dir[@]} != 1 )); then
+ printf "ERROR: %d entries for package %s found in pacman database\n" \
+ ${#pkg_dir[@]} "${pkg_name}"
+ printf "%s\n" "${pkg_dir[@]}"
+ exit 1
+fi
+
+if [[ ! -d $pkg_dir ]]; then
+ printf "ERROR: package %s is found in pacman database,\n" "${pkg_name}"
+ printf " but \`%s' is not a directory\n" "${pkg_dir}"
+ exit 1
+fi
+
+#
+# Begin
+#
+echo "Package: ${pkg_namver}"
+work_dir=$(mktemp -d --tmpdir bacman.XXXXXXXXXX)
+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 || -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 $myname as root"
+ rm -rf "$work_dir"
+ exit 1
+ fi
+ else
+ echo ""
+ echo "WARNING: package file /$i is missing"
+ echo ""
+ fi
+ ;;
+ esac
+done
+
+ret=$?
+if (( ret )); then
+ rm -rf "$work_dir"
+ exit 1
+fi
+
+pkg_size=$(du -sk | awk '{print $1 * 1024}')
+
+#
+# .PKGINFO stuff
+# TODO adopt makepkg's write_pkginfo() into this or scripts/library
+#
+echo Generating .PKGINFO metadata...
+echo "# Generated by $myname $myver" > .PKGINFO
+if [[ $INFAKEROOT == "1" ]]; then
+ echo "# Using $(fakeroot -v)" >> .PKGINFO
+fi
+echo "# $(LC_ALL=C date)" >> .PKGINFO
+echo "#" >> .PKGINFO
+
+cat "$pkg_dir"/{desc,files} |
+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
+ ;;
+ %DEPENDS%)
+ echo "depend = $i" >> .PKGINFO
+ ;;
+ %OPTDEPENDS%)
+ echo "optdepend = $i" >> .PKGINFO
+ ;;
+ %CONFLICTS%)
+ echo "conflict = $i" >> .PKGINFO
+ ;;
+ %PROVIDES%)
+ echo "provides = $i" >> .PKGINFO
+ ;;
+
+ # files
+ %BACKUP%)
+ # strip the md5sum after the tab
+ echo "backup = ${i%%$'\t'*}" >> .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 "$work_dir"/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null
+
+#
+# Generate the package
+#
+echo "Generating the package..."
+
+pkg_file="$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 ;;
+ *) echo "WARNING: '%s' is not a valid archive extension." \
+ "$PKGEXT" >&2; cat ;;
+esac > "${pkg_file}"; ret=$?
+
+if (( ret )); 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: