#!/bin/sh

mailq()
{
     /usr/sbin/sendmail.real -bp "$@"
}

newaliases()
{
    /usr/sbin/sendmail.real -bi "$@"
}

client()
{
    for INARG in "$@"; do
        case "$INARG" in
            -odi) OUTARG="-odb" ;;
            *)    OUTARG="$INARG" ;;
        esac
        OUTARGS="$OUTARGS $OUTARG"
    done

    cat > /tmp/$PROGNAME.$$.sendmail
    ( 
        /usr/sbin/sendmail.real $OUTARGS < /tmp/$PROGNAME.$$.sendmail
        rm -f /tmp/$PROGNAME.$$.sendmail
    ) &
}

passthrough()
{
    /usr/sbin/sendmail.real "$@"
}

unknown()
{
    logger -i -t sendmail.wrapper -p mail.crit "invalid mode"
}

main()
{
    MODE=unknown
    case `basename $0` in
        mailq)      MODE=mailq ;;
        newaliases) MODE=newaliases ;;
        sendmail)   MODE=sendmail ;;
    esac
    if [ $MODE = sendmail ]; then
        for ARG in "$@"; do
            [ "X$ARG" = X-bs ] && MODE=passthrough
            [ "X$ARG" = X-q ] &&  MODE=passthrough
        done
        [ $MODE = sendmail ] && MODE=client
    fi
    
    logger -i -t sendmail.wrapper "called as '$0 $*', selected mode is $MODE"
    $MODE "$@"
}

main "$@"