CORE-POS/IS4C

#!/bin/bash
# posd.sh

# Usage: posd.sh stop|start|restart|status|clean|swap|remove

if [ $# -lt 1 -o "$1" = "-h" -o "$1" = "--help" ] ; then
    echo "Usage: posd.sh stop|start|restart|status|clean|install|swap|remove"
    exit 0
fi

# --FUNCTIONALITY- - - - - - - - - - - - - - - - - -

#  + Run the functions of the scanner-scale driver/daemon wrapper.
#  + Swap in new versions of the scanner-scale driver/daemon wrapper.
#  + Remove the scanner-scale driver/daemon wrapper.

# --COMMENTS - - - - - - - - - - - - - - - - - - - -

#  2Nov12 EL Add -h and --help handling.
#            Add install option.
#            Add update-rc.d to remove.
# 27Oct12 EL Add remove option.
# 26Oct12 EL Adapted for sph / pos.exe from ../rs232/posd.sh

# Re Original:
#  9Sep12 EL Check that the named wrapper exists.
#            Change to posdriver-ssd-debian
# 14Apr12 EL Add swap for swapping in new versions of posdriver-ssd
# 13Apr12 EL As wrapper for service posdriver-ssd

# --FUNCTIONS- - - - - - - - - - - - - - - - - - - -

# See if the script is set to start at runlevel 3.
#  Is assumed to imply whether the script is set for any runlevel activity.
function checkrc() {
        INRC=`ls /etc/rc3.d/S* | grep $POSD`
}

# --CONSTANTS- - - - - - - - - - - - - - - - - - - -

POSD=posdriver-sph-debian
SPH=/var/www/IS4C/pos/is4c-nf/scale-drivers/drivers/NewMagellan
DHOME=/var/run/$POSD

# --VARIABLES- - - - - - - - - - - - - - - - - - - -

NOW=`date "+%H:%M:%S"`

# --MAIN - - - - - - - - - - - - - - - - - - - - - -

if [ "$1" = "swap" ] ; then
    if [ ! -f $SPH/$POSD ] ; then
        echo "$POSD does not exist at $SPH."
        exit 1
    fi
    if [ -f ${DHOME}/sphp.pid ] ; then
        ANS=
        printf "$POSD seems to be running.  OK to stop it? [y/N] > "; read ANS
        if [ "$ANS" = "y" ] ; then
            sudo service $POSD stop
            echo "Stopped."
        else
            echo "OK. Bye."
            exit 0
        fi
    fi
    cat $POSD | sudo tee /etc/init.d/$POSD > /dev/null
    RETVAL=$?
    if [ $RETVAL -eq 0 ] ; then
        echo "swap OK. now: $NOW"
        sudo chmod 755 /etc/init.d/$POSD
        ls -l /etc/init.d/$POSD
        ANS=
        printf "Do you want to start it now? [y/N] > "; read ANS
        if [ "$ANS" = "y" ] ; then
            sudo service $POSD start
            echo "Started. Bye."
        else
            echo "OK. Bye."
            exit 0
        fi
    else
        printf "swap failed because: >${RETVAL}<\n";
    fi
    exit
elif [ "$1" = "install" ] ; then
    if [ ! -f $SPH/$POSD ] ; then
        echo "$POSD does not exist to install from $SPH."
        exit 1
    fi
    if [ -f /etc/init.d/$POSD ] ; then
        echo "The wrapper: /etc/init.d/$POSD is already in place."
        checkrc;
        if [ "$INRC" != "" ] ; then
            echo " It is also set to start at boot."
        else
            ANS=
            printf " It is not set to start at boot. Do you want to do that now? [y/N] > "
            read ANS
            if [ "$ANS" = "y" ] ; then
                sudo update-rc.d $POSD defaults
                R1=$?
                if [ $R1 -eq 0 ] ; then
                    echo "Done. Bye."
                    exit 0
                else
                    echo "Start-at-boot failed: $R1"
                    exit 1
                fi
            else
                echo "OK. You may want to use this utility with the remove option. Bye."
                exit 0
            fi
        fi
        exit 1
    fi
    cat $POSD | sudo tee /etc/init.d/$POSD > /dev/null
    RETVAL=$?
    if [ $RETVAL -eq 0 ] ; then
        echo "Copied to /etc/init.d OK."
        sudo chmod 755 /etc/init.d/$POSD
        sudo update-rc.d $POSD defaults
        R2=$?
        if [ $R2 -eq 0 ] ; then
            echo "Set to start at boot OK."
        else
            echo "Start-at-boot failed: $R2."
        fi
        ANS=
        printf "Do you want to start it now? [y/N] > "; read ANS
        if [ "$ANS" = "y" ] ; then
            sudo service $POSD start
            echo "Started. Bye."
        else
            echo "OK. Bye."
            exit 0
        fi
    else
        printf "install failed because: >${RETVAL}<\n";
    fi
    exit
elif [ "$1" = "remove" ] ; then
    if [ ! -f /etc/init.d/$POSD ] ; then
        echo "The wrapper: /etc/init.d/$POSD doesn't exist."
        checkrc;
        if [ "$INRC" != "" ] ; then
            echo " But it's start-at-boot is set up. Remove that now? [y/N] > "
            if [ "$ANS" = "y" ] ; then
                sudo update-rc.d $POSD remove
                echo "Removed. Bye."
                exit 0
            fi
        fi
        exit 1
    fi
    if [ -f ${DHOME}/sphp.pid ] ; then
        ANS=
        printf "$POSD seems to be running.  OK to stop it? [y/N] > "; read ANS
        if [ "$ANS" = "y" ] ; then
            sudo service $POSD stop
            echo "Stopped."
        else
            echo "OK. Bye."
            exit 0
        fi
    fi
    if [ ! -f $SPH/$POSD ] ; then
        echo "There is no local copy of $POSD at $SPH"
        echo " Will not rm from /etc/init.d/";
        exit 1;
    else
        sudo rm /etc/init.d/$POSD
        sudo update-rc.d $POSD remove
        echo "Removed. Bye."
        exit 0
    fi
else
    if [ ! -f /etc/init.d/$POSD ] ; then
        echo "The wrapper: /etc/init.d/$POSD doesn't exist."
        if [ -f $SPH/$POSD ] ; then
            echo "It does exist at $SPH."
            echo "You could try using this utility with the install option to install it."
        fi
        exit 1
    fi
    sudo service $POSD $1
    exit
fi