#! /bin/bash
# $Id: vserver-build 2644 2007-12-19 14:28:40Z dhozac $

# Copyright (C) 2003,2004,2005 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
#  
# 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; version 2 of the License.
#  
# 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.

: ${UTIL_VSERVER_VARS:=/usr/lib/util-vserver/util-vserver-vars}
test -e "$UTIL_VSERVER_VARS" || {
    echo $"Can not find util-vserver installation (the file '$UTIL_VSERVER_VARS' would be expected); aborting..." >&2
    exit 1
}
. "$UTIL_VSERVER_VARS"
. "$_LIB_FUNCTIONS"
. "$_LIB_VSERVER_SETUP_FUNCTIONS"
. "$_LIB_VSERVER_BUILD_FUNCTIONS"

### Some local functions

function showHelp()
{
    echo \
$"Usage: $(basename $0) -m <method> -n <name> --force <cfg-options>*
    --rootdir <dir> --pkgbase <dir> [--] <method-args>*

Options:
    --force     ...  remove/rename already existing vservers with the same
                     name
    --keep      ...  do not delete generated files and directories when
                     build of vserver failed.
    -m <method> ...  use method <method>; see below for possible values
    --rootdir <dir>
                ...  [default: $__DEFAULT_VSERVERDIR]
    --pkgbase <dir>
                ...  [default: $__DEFAULT_VSERVERPKGDIR]
      
cfg-options are: $SETUP_HELPMSG

Possible methods are:
    legacy      ...  the \"old\" copy-all-from-host method, which requires the
                     old legacy  vserver-legacy script;  with  this method the
		     cfg-options will be ignored
    apt-rpm     ... -- -d <distribution>
                ...  installs the base-packages of the given distribution with
		     help of 'vapt-get'
    yum         ... -- -d <distribution>
                ...  installs the base-packages of the given distribution with
		     help of 'vyum'
    rpm         ... -- [-d <distribution>] --empty|([--force] [--nodeps] <manifest>)+
                ...  installs lists of rpm-packages
    skeleton    ... -- [<cmd> <args>*]
                ...  installs a minimal skeleton filesystem, creates the
		     configuration file and calls an optional command then
    debootstrap ... -- -d <distribution> [-m <mirror>] [-s <script> ] [-- <debootstrap-options>*]
                ...  bootstraps the vserver with Debian's 'debootstrap' package
    template    ... -- (-t <tarball>)+ [-d <distribution>]
                ...  installs a guest using tarball(s)
    fai         ... -- [ -f <fai_vserver> ] [-n <nfsroot>] [-d <fai_dir> ] [ -a ]
                     bootstraps the vserver with Debian Fully Automatic Installation
                     -f means use the nfsroot and profile in the vserver <fai_vserver>
                     -n <nfsroot> specifies the 'NFS' root explicitly
                     -d <fai_dir> specifies the location of the FAI profile
                     the -f option implies -n and -d are relative to the <fai_vserver>
    rsync       ... -- [-d <distribution>] --source <source> [-o <rsync option>]*
                ...  installs a guest by rsyncing from <source> to the guest root
    clone       ... -- [-d <distribution>] --source <source> [--exclude-from <exclude-list>]
                ...  clones a guest by linking unified files and copying the rest

Please report bugs to $PACKAGE_BUGREPORT"
    exit 0
}

function showVersion()
{
    echo \
$"vserver-build $PACKAGE_VERSION -- initializes a vserver
This program is part of $PACKAGE_STRING

Copyright (C) 2003,2004,2005 Enrico Scholz
This program is free software; you may redistribute it under the terms of
the GNU General Public License.  This program has absolutely no warranty."
    exit 0
}

### main starts here

set -e

declare -a default_opts=()
test -n "$NO_DEFAULT_OPTS" || getFileArray default_opts "$__CONFDIR/.defaults/apps/build/options" || :

tmp=$(getopt -o +m:n: --long keep,force,debug,help,version,rootdir:,pkgbase:,$SETUP_OPTIONS -n "$(basename $0)" -- \
	"${default_opts[@]}" "$@") || exit 1
eval set -- "$tmp"

VSERVER_NAME=
OPTION_FORCE=
OPTION_DEBUG=0
OPTION_KEEP=

while true; do
    case "$1" in
	(--help)    showHelp $0 ;;
	(--version) showVersion ;;
	(--force)   OPTION_FORCE=1;;
	(--keep)    OPTION_KEEP=1;;
	(--debug)   let ++OPTION_DEBUG;  set -x;;
	(--rootdir) ROOTDIR=$2;      shift;;
	(--pkgbase) PKGCFGBASE=$2;   shift;;
	(-m)	    method=$2;       shift;;
	(-n)	    VSERVER_NAME=$2; shift;;
	(--)	    shift; break;;
	(*)
	    { setup_setOption2 "$1" "$2" && shift; } || \
	      panic $"vserver-build: internal error."
	    ;;
    esac
    shift
done

test -n "$VSERVER_NAME" ||
    panic $"Name of vserver not specified"

setup_setDefaults "$VSERVER_NAME"

case x"$method" in
    (xlegacy)	exec $_VSERVER_LEGACY "$VSERVER_NAME" build "$@" ;;
    (xapt-rpm|xcopy|xskeleton|xdebootstrap|xyum|xrpm|xtemplate|xfai|xrsync|xclone)
		. $__PKGLIBDIR/vserver-build.$method
		;;
    (x)		panic $"No build-method specified";;
    (*)		panic $"Unknown build-method '$method'";;
esac