Merge remote-tracking branch 'dave/buildsys'

1 files changed, 307 insertions, 0 deletions

diff --git a/contrib/bacman.sh.in b/contrib/bacman.sh.in
new file mode 100755
index 00000000..ffb9d6d3
--- /dev/null
+++ b/contrib/bacman.sh.in
@@ -0,0 +1,307 @@
+#!/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: