#! /bin/sh

# $Id $
#*********************************************************************
# postinst -- setup fai
#
# This script is part of FAI (Fully Automatic Installation)
# Copyright (c) 2000 by Thomas Lange, Universitaet zu Koeln
#*********************************************************************
#
# see: dh_installdeb(1)

set -eu

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see /usr/doc/packaging-manual/
#
# quoting from the policy:
#     Any necessary prompting should almost always be confined to the
#     post-installation script, and should be protected with a conditional
#     so that unnecessary prompting doesn't happen if a package's
#     installation fails and the `postinst' is called with `abort-upgrade',
#     `abort-remove' or `abort-deconfigure'.

. /etc/fai.conf

test -f /etc/init.d/nfs-server && nfsserver=nfs-server
test -f /etc/init.d/nfs-kernel-server && nfsserver=nfs-kernel-server

add_export_line() {

    # add a line to /etc/exports

    pattern=$1
    shift
    options=$*

    [ -f /etc/exports ] && grep -q "^$pattern[[:space:]]" /etc/exports && return
    echo "$pattern $options" >> /etc/exports
    /etc/init.d/$nfsserver start >/dev/null
    /etc/init.d/$nfsserver reload >/dev/null
}

add_fai_account() {

    if id $LOGUSER 2>/dev/null 1>&2 ; then
	echo Account \$LOGUSER=$LOGUSER  already exists.
	echo Make sure, that all install clients can
	echo log into this account without a password
    else
	adduser --system --disabled-password --gecos "FAI account for log files" $LOGUSER
	gid=`id -ng $LOGUSER`
	perl -pi.bak -e "s#^$LOGUSER:(.+):/bin/false#$LOGUSER:\1:/bin/bash#" /etc/passwd
	echo "+@faiclients root" > /home/$LOGUSER/.rhosts
	chown $LOGUSER:$gid /home/$LOGUSER/.rhosts
	chmod go-rwx /home/$LOGUSER/.rhosts
	touch /home/$LOGUSER/.account_created_by_fai_package
    fi
}

case "$1" in
    configure)

    add_fai_account >/dev/null

    MYTMPFILE=`mktemp /tmp/make-fai-nfsroot.XXXXXX`

    echo Creating FAI nfsroot can take a long time
    make-fai-nfsroot > $MYTMPFILE 2>&1

    mkdir -p /usr/local/share/fai || true

    add_export_line /usr/local/share/fai  "@faiclients(ro)"
    add_export_line $NFSROOT  "@faiclients(ro,no_root_squash)"
    add_export_line /usr  "@faiclients(ro,no_root_squash)"

    if [ ! -d /usr/local/share/fai/fai_config ];then
	echo "You have no FAI configuration. Copy FAI template files with:"
	echo "cp -pR /usr/share/doc/fai/templates/* /usr/local/share/fai"
	echo "Then change the configuration files to meet your local needs."
    fi

    ;;

    abort-upgrade|abort-remove|abort-deconfigure)

    ;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 0
    ;;
esac

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

exit 0