#! /bin/bash

SYSCONFIG_FILE="/etc/sysconfig/named"

rc=0

function warnMessage()
{
    logger "Warning: $1"
}

for configfile in ${SYSCONFIG_FILE} ${NAMED_CONF}; do
    if [ ! -f ${configfile} ]; then
	echo -n "Name server configuration file ${configfile} does not exist. "
	# Tell the user this has skipped
	[ $rc != 0 ] || rc=6
    fi
done

. $SYSCONFIG_FILE
: ${NAMED_CHECKCONF_BIN:=/usr/bin/named-checkconf}
: ${NAMED_CHECKCONF_ARGS:=""}
: ${ETC_RNDC_KEY:=/etc/rndc.key}
: ${NEW_RNDC_KEY:=/var/lib/named/rndc.key}
: ${RNDC_KEYSIZE:=512}
: ${RNDC_BIN:="/usr/sbin/rndc"}
: ${NAMED_CONF:="/etc/named.conf"}

# Run all scripts defined in NAMED_INITIALIZE_SCRIPTS (/etc/sysconfig/named)
for script in ${NAMED_INITIALIZE_SCRIPTS}; do
    test "${script:0:1}" = "/" || script="/usr/share/bind/${script}"
    if [ -x "$script" ]; then
	${script}
	tmp=$?; [ $tmp = 0 ] || rc=$tmp
    else
        warnMessage "\"$script\" does not exist or is not executable. Check /etc/sysconfig/named"
    fi
done

# If /etc/rndc.key is not a symbolic link,
# relocate any existing /etc/rndc.key to /var/lib/named
# and put a symbolic link /etc/rndc.key -> /var/lib/named/rndc.key
# Note that this will also satisfy any check for /etc/rndc.key being a plain file.
if [ ! -L "$ETC_RNDC_KEY" ]; then
    [ -d /var/lib/named ] || mkdir /var/lib/named
    chown named: /var/lib/named
    [ -f "$ETC_RNDC_KEY" ] && mv "$ETC_RNDC_KEY" "$NEW_RNDC_KEY"
    ln -s "$NEW_RNDC_KEY" "$ETC_RNDC_KEY"	# This may create a dangling symlink
fi
# If rndc.key does not exist in the new directory, create it
if [ ! -f $NEW_RNDC_KEY ]; then
    warnMessage "File $NEW_RNDC_KEY not found. Creating it."
    /usr/sbin/rndc-confgen -a -b $RNDC_KEYSIZE -c $NEW_RNDC_KEY
    chmod 640 $NEW_RNDC_KEY
    chown root:named $NEW_RNDC_KEY
fi

# Make sure /etc/named.d/forwarders.conf exists
[ -e /etc/named.d/forwarders.conf ] || touch /etc/named.d/forwarders.conf

# Check the syntax of our 'named' configuration.
if ! ${NAMED_CHECKCONF_BIN} ${NAMED_CHECKCONF_ARGS} >/dev/null; then
    [ $rc != 0 ] || rc=6
fi

exit $rc