#!/bin/sh
#CryptoNAS Live include file
#$BUILD_DIR/config/cnas-active-settings
#This file includes the config files in the correct order.
#It can be included by scripts both in the bootstrap and
#chroot environments. Variable assignments in later
#includes override earlier ones.
#This file also contains a hack to write the scoreboard 
#file.

# Variable and function names starting with underscore
# are NOT intended to be used for user customization of builds.
# In addition, the names of variables to be included in the
# scoreboard file must begin with "CNAS_".

#This file is included by:
# config/common
# config/bootstrap
# config/chroot
# config/binary
# config/source

CNAS_CONFIG_DIR="config"

. ${CNAS_CONFIG_DIR}/cnas-default-settings

#Include files in "cnas-custom-settings.d" directory
if [ -d ${CNAS_CONFIG_DIR}/cnas-custom-settings.d ]
then
    for include_file in `find ${CNAS_CONFIG_DIR}/cnas-custom-settings.d -maxdepth 1 -type f -print`
    do
        . "$include_file"
    done
fi

#Include "cnas-custom-settings" IFF this file exists. Variables here can
#override those in "cnas-custom-settings.d" directory.
[ -f ${CNAS_CONFIG_DIR}/cnas-custom-settings ] && . ${CNAS_CONFIG_DIR}/cnas-custom-settings


#The stage file tracks when the scoreboard update code
#needs to run. The path is relative to the build dir.
_CNAS_STAGE_DIR=".stage/"
_CNAS_STAGE=".stage/chroot_cnas-scoreboard"


#Search in the top level of config for settings files CryptoNAS
#depends on. If any of them changed more recently than
#the settings scoreboard file, update it.
_CNAS_FIND="find config -regextype posix-extended -maxdepth 1 -type f -newer ${_CNAS_STAGE} -true " 


_CNAS_SCOREBOARD="config/chroot_local-includes/usr/share/cryptonas-live/etc-scoreboard"

#supporting unnecessary synonyms complicates change control
if [ "$CNAS_HARDNESS" == "hard" ] || [ "$CNAS_HARDNESS" == "normal" ]
    then
    echo "warning: \$CNAS_HARDNESS settings `hard' and `normal' deprecated; use `secure' or `devel' instead"
fi


#Only run the scoreboard hack if the ".stage" directory exists
if [ -d ${_CNAS_STAGE_DIR} ] 
then
#If the scoreboard file needs updating, update it:

#If the stage file does not exist or the "find" found something
if [ ! -f "${_CNAS_STAGE}" ] || [ -n "`${_CNAS_FIND}`" ]
    then
    #Add explanatory banner to scoreboard file
    cat > ${_CNAS_SCOREBOARD} <<EOF
#/usr/share/cryptonas-live/etc-scoreboard
# This file is used by the CryptoNAS Live system to pass
# configuration settings within the build system and to
# the Debian Live runtime. It should NOT be checked in to
# the CryptoNAS project's SVN repository.

EOF

    #Update the scoreboard file from the current shell vars
    echo "CryptoNAS: updating scoreboard file..."
    set | grep -e "^CNAS_" >> ${_CNAS_SCOREBOARD}
    
    #If we updated the scoreboard, touch the .stage/... 
    #file we use for time stamping.
    touch "${_CNAS_STAGE}"
fi

fi # .stage directory exists

#Unconditionally return success
/bin/true