#!/bin/sh

# $Progeny$

# Copyright 2004 Progeny Linux Systems, Inc.
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# Author: Branden Robinson

PROGNAME=${0##*/}
DEBUG=
SHOW_LIST=

trace () {
    if [ -n "$DEBUG" ]; then
        echo "$PROGNAME: debug: $*" >&2
    fi
}

warn () {
    echo "$PROGNAME: warning: $*" >&2
}

die () {
    echo "$PROGNAME: error: $*" >&2
    exit 1
}

usage () {
    cat <<EOF
Usage: $PROGNAME { -h | --help }
       $PROGNAME { -l | --list }
       $PROGNAME [ -v | --verbose ] DIRECTORY
Create a chroot environment in DIRECTORY using a minimal set of RPM packages.

Options:
  -h, --help                     display this message and exit
  -l, --list                     list RPMs required for chroot creation and exit
  -v, --verbose                  print verbose status messages
EOF
}

# Parse command line.
TEMP=$(getopt --options hlv \
              --longoptions help,list,verbose \
              -n "$PROGNAME" -- "$@")

if [ $? -ne 0 ]; then
    echo "$PROGNAME: error while getting options" >&2
fi

eval set -- "$TEMP"

while :; do
    case "$1" in
        -h|--help)
            usage
            exit 0
            ;;
        -l|--list)
            SHOW_LIST=yes
            ;;
        -v|--verbose)
            DEBUG=yes
            ;;
        --)
            # End of option arguments.
            shift
            break
            ;;
        *)
            die "unrecognized option; use \"$PROGNAME --help\" for help"
            exit 2
            ;;
    esac
    shift
done

case "$(uname -m)" in
    x86_64)
        RPMS=$(cat <<EOF
0:setup-2.5.33-1.noarch.rpm
1:filesystem-2.2.4-1.x86_64.rpm
2:basesystem-8.0-3.noarch.rpm
3:tzdata-2003d-2.noarch.rpm
4:glibc-common-2.3.3-27.x86_64.rpm
5:libgcc-3.3.3-7.i386.rpm
5:libgcc-3.3.3-7.x86_64.rpm
6:glibc-2.3.3-27.x86_64.rpm
6:glibc-2.3.3-27.i386.rpm
7:mktemp-1.5-7.x86_64.rpm
8:termcap-11.0.1-18.1.noarch.rpm
9:libtermcap-2.0.8-38.x86_64.rpm
10:bash-2.05b-38.x86_64.rpm
11:ncurses-5.4-5.x86_64.rpm
11:ncurses-5.4-5.i386.rpm
12:zlib-1.2.1.1-2.1.i386.rpm
12:zlib-1.2.1.1-2.1.x86_64.rpm
13:info-4.6-3.x86_64.rpm
14:libselinux-1.11.4-1.i386.rpm
14:libselinux-1.11.4-1.x86_64.rpm
15:findutils-4.1.7-25.x86_64.rpm
15:pcre-4.5-2.x86_64.rpm
16:grep-2.5.1-26.x86_64.rpm
16:words-2-22.noarch.rpm
17:libattr-2.4.1-4.i386.rpm
17:libattr-2.4.1-4.x86_64.rpm
18:libacl-2.2.7-5.i386.rpm
18:libacl-2.2.7-5.x86_64.rpm
19:cracklib-2.7-27.1.i386.rpm
19:cracklib-2.7-27.1.x86_64.rpm
20:cracklib-dicts-2.7-27.1.x86_64.rpm
21:libstdc++-3.3.3-7.i386.rpm
21:libstdc++-3.3.3-7.x86_64.rpm
22:db4-4.2.52-3.1.i386.rpm
22:db4-4.2.52-3.1.x86_64.rpm
23:glib-1.2.10-12.1.1.x86_64.rpm
24:glib2-2.4.0-1.x86_64.rpm
24:glib2-2.4.0-1.i386.rpm
25:sed-4.0.8-4.x86_64.rpm
26:gawk-3.1.3-7.x86_64.rpm
27:fedora-release-2-5.x86_64.rpm
28:psmisc-21.4-2.x86_64.rpm
29:iproute-2.4.7-14.x86_64.rpm
30:iputils-20020927-13.x86_64.rpm
31:shadow-utils-4.0.3-21.x86_64.rpm
32:chkconfig-1.3.9-1.1.x86_64.rpm
33:e2fsprogs-1.35-7.1.x86_64.rpm
34:e2fsprogs-1.35-7.1.i386.rpm
35:ethtool-1.8-3.1.x86_64.rpm
36:mingetty-1.07-2.x86_64.rpm
37:net-tools-1.60-25.x86_64.rpm
38:popt-1.9.1-0.3.i386.rpm
38:popt-1.9.1-0.3.x86_64.rpm
39:coreutils-5.2.1-7.x86_64.rpm
39:pam-0.77-40.x86_64.rpm
39:pam-0.77-40.i386.rpm
39:initscripts-7.53-1.x86_64.rpm
39:SysVinit-2.85-25.x86_64.rpm
39:util-linux-2.12-18.x86_64.rpm
39:sysklogd-1.4.1-16.x86_64.rpm
39:dev-3.3.13-1.x86_64.rpm
39:which-2.16-2.x86_64.rpm
39:modutils-2.4.26-16.x86_64.rpm
39:procps-3.2.0-1.1.x86_64.rpm
40:beecrypt-3.1.0-3.x86_64.rpm
41:bzip2-libs-1.0.2-12.1.i386.rpm
41:bzip2-libs-1.0.2-12.1.x86_64.rpm
42:bzip2-1.0.2-12.1.x86_64.rpm
43:elfutils-libelf-0.95-2.x86_64.rpm
44:elfutils-0.95-2.x86_64.rpm
45:gdbm-1.8.0-22.1.x86_64.rpm
45:gdbm-1.8.0-22.1.i386.rpm
46:gmp-4.1.2-14.x86_64.rpm
47:krb5-libs-1.3.3-1.x86_64.rpm
47:krb5-libs-1.3.3-1.i386.rpm
48:openssl-0.9.7a-35.x86_64.rpm
48:openssl-0.9.7a-35.i386.rpm
49:libxml2-2.6.8-1.x86_64.rpm
49:libxml2-2.6.8-1.i386.rpm
50:readline-4.3-10.1.x86_64.rpm
51:python-2.3.3-6.x86_64.rpm
52:libxml2-python-2.6.8-1.x86_64.rpm
53:rpm-4.3.1-0.3.x86_64.rpm
54:rpm-python-4.3.1-0.3.x86_64.rpm
55:wget-1.9.1-5.x86_64.rpm
56:yum-2.0.7-1.1.noarch.rpm
EOF
        )
        ;;
    i[3456]86)
        RPMS=$(cat <<EOF
0:setup-2.5.33-1.noarch.rpm
1:filesystem-2.2.4-1.i386.rpm
2:basesystem-8.0-3.noarch.rpm
3:tzdata-2003d-2.noarch.rpm
4:glibc-common-2.3.3-27.i386.rpm
5:libgcc-3.3.3-7.i386.rpm
6:glibc-2.3.3-27.i386.rpm
7:mktemp-1.5-7.i386.rpm
8:termcap-11.0.1-18.1.noarch.rpm
9:libtermcap-2.0.8-38.i386.rpm
10:bash-2.05b-38.i386.rpm
11:ncurses-5.4-5.i386.rpm
12:zlib-1.2.1.1-2.1.i386.rpm
13:info-4.6-3.i386.rpm
14:libselinux-1.11.4-1.i386.rpm
15:findutils-4.1.7-25.i386.rpm
15:pcre-4.5-2.i386.rpm
16:grep-2.5.1-26.i386.rpm
16:words-2-22.noarch.rpm
17:libattr-2.4.1-4.i386.rpm
18:libacl-2.2.7-5.i386.rpm
19:cracklib-2.7-27.1.i386.rpm
20:cracklib-dicts-2.7-27.1.i386.rpm
21:libstdc++-3.3.3-7.i386.rpm
22:db4-4.2.52-3.1.i386.rpm
23:glib-1.2.10-12.1.1.i386.rpm
24:glib2-2.4.0-1.i386.rpm
25:sed-4.0.8-4.i386.rpm
26:gawk-3.1.3-7.i386.rpm
27:fedora-release-2-4.i386.rpm
28:psmisc-21.4-2.i386.rpm
29:iproute-2.4.7-14.i386.rpm
30:iputils-20020927-13.i386.rpm
31:shadow-utils-4.0.3-21.i386.rpm
32:chkconfig-1.3.9-1.1.i386.rpm
33:e2fsprogs-1.35-7.1.i386.rpm
34:ethtool-1.8-3.1.i386.rpm
35:mingetty-1.07-2.i386.rpm
36:net-tools-1.60-25.i386.rpm
37:popt-1.9.1-0.3.i386.rpm
38:coreutils-5.2.1-7.i386.rpm
38:pam-0.77-40.i386.rpm
38:initscripts-7.53-1.i386.rpm
38:SysVinit-2.85-25.i386.rpm
38:util-linux-2.12-18.i386.rpm
38:sysklogd-1.4.1-16.i386.rpm
38:dev-3.3.13-1.i386.rpm
38:which-2.16-2.i386.rpm
38:modutils-2.4.26-16.i386.rpm
38:procps-3.2.0-1.1.i386.rpm
39:beecrypt-3.1.0-3.i386.rpm
40:bzip2-libs-1.0.2-12.1.i386.rpm
41:bzip2-1.0.2-12.1.i386.rpm
42:elfutils-libelf-0.95-2.i386.rpm
43:elfutils-0.95-2.i386.rpm
44:gdbm-1.8.0-22.1.i386.rpm
45:gmp-4.1.2-14.i386.rpm
46:krb5-libs-1.3.3-1.i386.rpm
47:openssl-0.9.7a-35.i386.rpm
48:libxml2-2.6.8-1.i386.rpm
49:readline-4.3-10.1.i386.rpm
50:python-2.3.3-6.i386.rpm
51:libxml2-python-2.6.8-1.i386.rpm
52:rpm-4.3.1-0.3.i386.rpm
53:rpm-python-4.3.1-0.3.i386.rpm
54:wget-1.9.1-5.i386.rpm
55:yum-2.0.7-1.1.noarch.rpm
EOF
        )
        ;;
    *)
        die "architecture $(uname -m) unrecognized"
        ;;
esac

if [ -n "$SHOW_LIST" ]; then
    echo "$RPMS" | sed 's/[[:digit:]]\+://'
    exit 0
fi

if [ $# -ne 1 ]; then
    die "specify a directory to install to; use \"$PROGNAME --help\" for help"
fi

CHROOTDIR="$1"

if [ $(id -u) -ne 0 ]; then
    die "must have root privileges to create chroot"
fi

trace "creating chroot directory"
if [ -e "$CHROOTDIR" ]; then
    die "chroot directory $CHROOTDIR already exists; aborting"
fi

mkdir -p "$CHROOTDIR/var/lib/rpm"

PASSNUM=0

while :; do
    trace "Installing pass number $PASSNUM..."
    PASS=$(echo "$RPMS" | grep "^$PASSNUM:" | sed 's/^[0-9]\+://')
    if [ -z "$PASS" ]; then
        trace "...nothing left to do."
        break
    else
        set -- $PASS

        # make sure each RPM exists
        for RPM; do
            if [ ! -e "$RPM" ]; then
                die "cannot find required package $RPM"
            fi
        done

        # rpm insists on having an absolute path to its --root option's argument
        if ! expr "$CHROOTDIR" : "/" >/dev/null 2>&1; then
            CHROOTDIR="$(pwd)/$CHROOTDIR"
        fi
        trace "Installing $* to $CHROOTDIR..."
        if ! rpm --install --root "$CHROOTDIR" $@; then
            die "command \"rpm --install --root $CHROOTDIR $*\"" \
              "failed"
        fi
    fi
    PASSNUM=$(( $PASSNUM + 1 ))
done

# vim:set ai et nohlsearch sts=4 sw=4 tw=80: