#!/bin/bash
# $Id$
#*********************************************************************
#
# fai -- main installation script executed after booting
#
# This script is part of FAI (Fully Automatic Installation)
# (c) 1999-2007 by Thomas Lange, lange@informatik.uni-koeln.de
# Universitaet zu Koeln
#
#*********************************************************************
# 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.
# 
# A copy of the GNU General Public License is available as
# `/usr/share/common-licences/GPL' in the Debian GNU/Linux distribution
# or on the World Wide Web at http://www.gnu.org/copyleft/gpl.html. You
# can also obtain it by writing to the Free Software Foundation, Inc.,
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#*********************************************************************

#set -xv # for full debugging

export PATH=/usr/local/sbin:/usr/local/bin:/usr/lib/fai:/bin:/sbin:/usr/bin:/usr/sbin:
# some variables
export FAI_VERSION=FAIVERSIONSTRING
stamp=/var/run/fai/FAI_INSTALLATION_IN_PROGRESS
romountopt="-o async,noatime,nolock,ro,actimeo=1800"

export faimond=0
export renewclass=0
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
fai_init() {

    set -a # now export all variables

    umask 022
    if [ ! -d "$FAI_ETC_DIR" ]; then
	echo "$FAI_ETC_DIR is not a directory"
	exit 6
    fi
    [ -f $FAI_ETC_DIR/fai.conf ] && . $FAI_ETC_DIR/fai.conf

    if [ -f /etc/RUNNING_FROM_FAICD ]; then   # we are booting from fai cd
	umount /initrd
	romountopt=
	FAI_DEBMIRROR="--bind /media/mirror"
	MNTPOINT=/media/mirror
	FAI_CONFIG_SRC="file://$FAI"   # on a fai-cd the config space is already available
    fi

    # some variables from are not needed any more
    #unset FAI_CONFIGDIR

    # read subroutine definitions
    local sub=/usr/lib/fai/subroutines
    [ -f $sub ] && . $sub
    [ -f $sub-linux ] && . $sub-linux

    [ -f "$stamp" ] && {
       echo "$0 already running, aborting"
       exit 1
    }

    DEBIAN_FRONTEND=noninteractive
    # local disks are mounted to $FAI_ROOT
    if [ -z "$FAI_ROOT" ] ; then
      [ $do_init_tasks -eq 1 ] && FAI_ROOT=/tmp/target || FAI_ROOT=/
    fi
    # executed command in the environment of the new system
    ROOTCMD="chroot $FAI_ROOT"
    # no chroot needed
    [ "$FAI_ROOT" = '/' ] && ROOTCMD=
    target=$FAI_ROOT

    if [ X$action = Xdirinstall -a -n "$newhostname" ]; then
	HOSTNAME=$newhostname
	HOST=$newhostname
	unset newhostname
	echo "Hostname set to $HOST" | tee -a $LOGDIR/fai.log
    fi

    if [ $do_init_tasks -eq 1 ]; then
        trap 'echo "Now rebooting";faireboot' INT QUIT
    else
        trap "echo 'Aborted';rm -f $stamp" INT QUIT
    fi

    if [ $do_init_tasks -eq 1 ]; then
	eval_cmdline
	# if HOST was specified on the commandline, set hostname to it
	if [ -n "$HOST" ]; then
	    HOSTNAME=$HOST
	    hostname $HOST
	    echo "Hostname set to $HOST" | tee -a $LOGDIR/fai.log
	fi

	mount -t sysfs sysfs /sys
	# we really need to start udev
	[ -x /etc/init.d/udev ] && /etc/init.d/udev start
	[ -d /var/run/network ] || mkdir /var/run/network
	[ -d /dev/shm/network ] || mkdir /dev/shm/network # when using initrd kernels
	ifup lo
	[ -x /sbin/portmap ] && /sbin/portmap
	mount -t devpts devpts /dev/pts
	cat /proc/kmsg >/dev/tty4 &
    fi

    # since HOSTNAME may change define classes now, so we can call hooks before fai-class is called
    [ -z "$classes" ] && classes="DEFAULT $(uname -s | tr a-z A-Z) $HOSTNAME LAST"

    prcopyleft

    save_dmesg
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
usage() {
    cat <<-EOF
	fai $FAI_VERSION. Copyright (C) 1999-2006 Thomas Lange
	Usage: $0 [options] [action]
       
	Options:
	   -v|--verbose      display more information during the update
	   -h|--help         display this help message
	   -N|--new          renew list of classes
	   -c|--class        comma separated list of classes
	   -C|--cfdir CFDIR  Use CFDIR for  reading the config files

EOF
    exit 0
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
fstart() {

    # these tasks can define variables, that are needed later
    [ -n "$etc_message" ] && echo ""
    echo "$etc_message"
    [ $do_init_tasks -eq 1 ] || echo "Using configuration files from $FAI_ETC_DIR"
    unset etc_message
    task confdir
    task setup
    task defclass
    unset cmdlineclasses renewclass
    [ $do_init_tasks -eq 1 ] && set_disk_info
    task defvar
    [ $do_init_tasks -eq 1 ] && load_keymap_consolechars
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Main routine

# Parse commandline options
TEMP=$(getopt -o u:Nhvc:C: --long hostname:,new,help,verbose,class:,cfdir: -n "$0" -- "$@")
if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
# Note the quotes around `$TEMP': they are essential!
eval set -- "$TEMP"
unset TEMP

while true ; do
    case "$1" in
        -h|--help)
	    shift
	    usage
            ;;
	-v|--verbose)
	    shift
	    export verbose=1
	    ;;
	-N|--new)
	    shift
	    renewclass=1
	    ;;
	-C|--cfdir)
	    shift
	    cfdir=$1
	    shift
	    ;;
	-c|--class)

	    if [ $renewclass -eq 1 ]; then
		echo "You can't use -c|--classes and -N|--new at the same time."
		exit 9
	    fi
	    shift
	    export cmdlineclasses=$1
	    shift
	    cmdlineclasses=${cmdlineclasses//,/ }
	    ;;
	-u|--hostname)
	    shift
	    export newhostname=$1
	    shift
	    ;;
        --) 
            shift
            break
            ;;
         *)
            echo "$0: command line parsing error ! $@"
            exit 1
            ;;
    esac
done

# use FAI_ETC_DIR from environment variable
if [ -n "$FAI_ETC_DIR" -a -z "$cfdir" ]; then
    # print this message later so it gets into the log files
    etc_message="Using environment variable \$FAI_ETC_DIR."
fi
[ -n "$cfdir" ] && FAI_ETC_DIR=$cfdir
unset cfdir
: ${FAI_ETC_DIR:=/etc/fai}
FAI_ETC_DIR=$(readlink -f $FAI_ETC_DIR) # canonicalize path
export FAI_ETC_DIR

# override FAI_ACTION later if a command line argument is given
[ "$1" ] && action=$1
[ "$2" ] && export FAI_ROOT=$2 # only used for dirinstall

if [ X$action = Xdirinstall ]; then
    if [ -z "$FAI_ROOT" ]; then
	echo "Please specify a target directory. Aborted"
	exit 3
    fi
    export NFSROOT=$(source $FAI_ETC_DIR/make-fai-nfsroot.conf; echo $NFSROOT)
fi

if [ $(id -u) != "0" ]; then
    echo "Run this program as root."
    exit 1
fi

# exit if we do not run from nfsroot and no parameter is given
if [ ! -f /.THIS_IS_THE_FAI_NFSROOT -a "X$1" = "X" ]; then
    echo "Please give more parameters if not run from the nfsroot."
    exit 2
fi

# are we called as an init substitute ?
export do_init_tasks=0
[ "$0" = "/etc/init.d/rcS" ] && do_init_tasks=1
if [ $do_init_tasks -eq 1 ]; then
    renewclass=1 # always renew class list when installing
fi
export start_seconds=$(cut -d . -f 1 /proc/uptime)

[ -d /var/run/fai ] || mkdir /var/run/fai
export LOGDIR=/var/log/fai/current
[ -d $LOGDIR ] && rm -rf $LOGDIR
mkdir -p $LOGDIR

# for compability, can be removed later
if [ $do_init_tasks -eq 1 ]; then
    mkdir /tmp/fai
    mount --bind $LOGDIR /tmp/fai 
fi

fai_init
if [ X$action = Xdirinstall ]; then
    skiptask confdir
    export FAI=$FAI_CONFIGDIR
    set -a
    clean_exit() {
	rm -f $stamp
	[ -z "$FAI_ROOT" ] && return
	[ -d $FAI_ROOT/proc/self ] && umount $FAI_ROOT/proc $FAI_ROOT/sys
	[ -f /etc/init.d/udev ] && umount $FAI_ROOT/dev
    }
    trap 'clean_exit' EXIT
fi

mkfifo $LOGDIR/logfifo
tee -a $LOGDIR/fai.log < $LOGDIR/logfifo &
# in bash &> redirect stdout and stderr to file
fstart &> $LOGDIR/logfifo
rm $LOGDIR/logfifo
sleep 1 # wait for tee to complete. One second should be ok
# old code
# {
# # a bash group command with { does not work on sparc
# task confdir
# task setup
# task defclass
# task defvar
# load_keymap_consolechars
# set_disk_info
# } > >( tee -a $LOGDIR/fai.log )  2>&1

[ "$action" ] && export FAI_ACTION=$action
unset action
task action 2>&1 | tee -a $LOGDIR/fai.log

[ -L "/var/run/fai/current_config" ] && rm -f "/var/run/fai/current_config"

echo "End of $0"