#!/bin/sh
if [ $# -eq 0 ]
then
    echo "Use: $0 jailName"
    exit 0
else
    #Calculate next ip
    grep jid /etc/jail.conf | grep -v \# | tr -d \; | awk '{print $3}' > $PWD/jid.tmp
    JAILID=$(sort -hr jid.tmp|head -1)
    JAILID=$((JAILID+1))
    JAIL="$1"
    RELEASE="14.1-RELEASE"
    JAILMOUNTPOINT="/usr/local/jails"
    JAILFSTAB="/usr/local/jails/jail.fstab.d/"
    JAILCONFIG="/etc/jail.conf"
    ZFS_SNAPSHOT=$(zfs list -t snapshot|grep skeleton-$RELEASE@base|awk '{print $1}')
    ZFS_SERVICE="/srv/jails/services"
    ZFS_SKELETON="/srv/jails/services/$JAIL"
    if [ -z "$ZFS_SNAPSHOT" ]
    then
        echo "Creating SKELETON snapshot"
        zfs snapshot zroot/jails/templates/skeleton-$RELEASE@base
    fi
    if ! [ -d "$ZFS_SERVICE" ]
    then
        echo "Creating services jail"
        zfs create zroot/jails/services
    fi
    if ! [ -d "$ZFS_SKELETON" ]
        then
            echo "Creating $JAIL jail"
            zfs clone zroot/jails/templates/skeleton-$RELEASE@base zroot/jails/services/$JAIL
        else
                echo "Jail $JAIL already exist, try to start or restart it"
                break
    fi

    echo "hostname=\"$JAIL\"" > /srv/jails/services/$JAIL/etc/rc.conf

    #Create mountpoint
    if [ ! -d $JAILMOUNTPOINT/$JAIL ]
    then
        mkdir -p $JAILMOUNTPOINT/$JAIL
    fi
    if [ ! -f $JAILFSTAB/$JAIL.fstab ]
    then
        touch $JAILFSTAB/$JAIL.fstab
    fi
    #checking ip
    echo "/srv/jails/templates/base-$RELEASE    $JAILMOUNTPOINT/$JAIL/    nullfs    ro    0    0" >> $JAILFSTAB/$JAIL.fstab
    echo "/srv/jails/services/$JAIL    $JAILMOUNTPOINT/$JAIL/skeleton    nullfs    rw    0    0" >> $JAILFSTAB/$JAIL.fstab
    echo "$JAIL {" >> $JAILCONFIG
    echo "#    jid = ${JAILID};" >> $JAILCONFIG
    echo '#   exec.start = "/usr/local/etc/rc.d/service onestart";' >> $JAILCONFIG
    echo '#   exec.stop = "/usr/local/etc/rc.d/service onestop";' >> $JAILCONFIG
    echo '    allow.raw_sockets = "true";' >> $JAILCONFIG
    echo "    \$ip = ${JAILID};" >> $JAILCONFIG
    echo "}" >> $JAILCONFIG
fi