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#!/bin/bash
# Needs bash for string manipulation
# Copyright (c) 2013, 2014 - bwLehrpool Projekt
# Copyright (c) 2012 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your feedback to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org
#
# First script for initial ramfs for OpenSLX linux stateless clients
#############################################################################
# Set greeting and add information about the booted system
declare -rg INFILE=/opt/openslx/etc/issue.template
declare -rg TMPFILE=$(mktemp)
declare -rg OUTFILE=/etc/issue
. /opt/openslx/config
# Replace known variables and determine maximum line length
MAX=0
while IFS='' read -r line || [ -n "$line" ]; do
line="${line/"%ip%"/"$SLX_PXE_CLIENT_IP"}"
line="${line/"%hostname%"/"$SLX_HOSTNAME"}"
len=${#line}
[ "$len" -gt "$MAX" ] && MAX=$len
echo "$line"
done < "$INFILE" > "$TMPFILE"
# Fix up spacing for right-aligned text
while IFS='' read -r line || [ -n "$line" ]; do
tst=${line/"%space%"/}
if [ "$(( ${#line} - ${#tst} ))" -eq 7 ]; then
space=
while true; do
tst=${line/"%space%"/"$space"}
if [ "${#tst}" -ge "$MAX" ]; then
line="$tst"
break
fi
space=" $space"
done
fi
echo "$line"
done < "$TMPFILE" > "$OUTFILE"
rm -f -- "$TMPFILE"
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