1 files changed, 307 insertions, 0 deletions
diff --git a/contrib/bacman.in b/contrib/bacman.in
new file mode 100755
index 00000000..bd545180
--- /dev/null
+++ b/contrib/bacman.in
@@ -0,0 +1,307 @@
+#!@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:
+