likewise-open 6.1.0.406-0ubuntu5 / preinst

#!/bin/sh

UPGRADEDIR4="/etc/likewise-open/4_1_upgrade"

# Not all daemons in the list were 'officially' released on Ubuntu. But it
# should not hurt to have them listed.
DAEMONS_TO_HALT="likewise-winbindd lwsmd lwregd netlogond lwiod dcerpcd eventlogd lsassd"

LOG=/var/log/likewise-open-install.log
TLOG=/tmp/likewise-open-install.txt

# Display to screen and log file with a blank line.
log()
{
    echo $@
    echo
    echo $@ >> $LOG
    echo >> $LOG
}

_log()
{
    echo $@
    echo $@ >> $LOG
}

# Display to file.
logfile()
{
    echo $@ >> $LOG
    echo >> $LOG
}

# Execute command.
# If successful, note in log file.
# If not successful, note on screen and log file.
exec_log()
{
    $@ > $TLOG 2>&1
    err=$?
    if [ $err -eq 0 ]; then
        echo "Success: $@" >> $LOG
        cat $TLOG >> $LOG
        echo >> $LOG
    else
        _log "Warning: $@ returned $err"
        _log `cat $TLOG`
        _log
    fi
    rm -f $TLOG > /dev/null 2>&1
    return $err
}

# Execute command.
# Log only to file.
exec_logfile()
{
    $@ > $TLOG 2>&1
    err=$?
    if [ $err -eq 0 ]; then
        echo "Success: $@" >> $LOG
    else
        echo "Warning: $@ returned $err" >> $LOG
    fi
    cat $TLOG >> $LOG
    echo >> $LOG
    rm -f $TLOG > /dev/null 2>&1
    return $err
}

# Execute command.
# If successful, note in log file.
# If not successful, note on screen and log file and then exit.
exec_log_exit()
{
    $@ > $TLOG 2>&1
    err=$?
    if [ $err -eq 0 ]; then
        echo "Success: $@" >> $LOG
        cat $TLOG >> $LOG
        echo >> $LOG
    else
        _log "Error: $@ returned $err"
        _log `cat $TLOG`
        _log
        rm -f $TLOG > /dev/null 2>&1
        exit 1
    fi
    rm -f $TLOG > /dev/null 2>&1
    return $err
}

rm_conffile() {
    CONFFILE="$1"

    if [ -e "$CONFFILE" ]; then
        md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
        old_md5sum="`sed -n -e \"/^Conffiles:/,/^[^ ]/{\\\\' $CONFFILE'{s/.* //;p}}\" /var/lib/dpkg/status`"
        if [ "$md5sum" != "$old_md5sum" ]; then
            log "Obsolete conffile $CONFFILE has been modified by you."
            log "Saving as $CONFFILE.dpkg-bak ..."
            exec_log "mv -f $CONFFILE $CONFFILE.dpkg-bak"
        else
            log "Removing obsolete conffile $CONFFILE ..."
            exec_log "rm -f $CONFFILE"
        fi
    fi
}

save_4_1_files()
{
    if [ -f /etc/samba/lwiauthd.conf -a -f /etc/samba/secrets.tdb ]
    then
        exec_log_exit "mkdir -p ${UPGRADEDIR4}"
        exec_log_exit "cp /etc/samba/lwiauthd.conf ${UPGRADEDIR4}"
        exec_log_exit "cp /etc/samba/secrets.tdb ${UPGRADEDIR4}"
    fi
}

case "$1" in

    install)
    logfile "### likewise-open.preinst install"
    if [ -f /opt/likewise/data/VERSION ]; then
        log "Error: found /opt/likewise/data/VERSION"
        log "Please remove versions of Likewise Open and Likewise Enterprise not supported by Ubuntu before installing this package."
        exit 101
    fi

    #### AGGRESIVELY STOP LIKEWISE DAEMONS -- may be running from previous
    #### version that didn't kill them all
    # There are many user reports that indicate there is a
    # misbehaving daemon that interferes with installs/upgrades.
    logfile "Snapshot of processes before stopping daemons"
    exec_logfile "ps ax"

    # Shutdown old daemons nicely
    if [ -f /etc/init.d/lsassd ]
    then
        exec_log "/etc/init.d/lsassd stop"
    fi

    for daemon in $DAEMONS_TO_HALT
    do
        if [ -x /etc/init.d/$daemon ]; then
            exec_logfile "/etc/init.d/$daemon stop"
        fi
        exec_logfile "pkill -TERM -x $daemon"
        exec_logfile "pkill -KILL -x $daemon"
        exec_logfile "rm -f /var/run/$daemon.pid"
    done

    logfile "Snapshot of processes after stopping daemons"
    exec_logfile "ps ax"
    exit 0
    ;;

    abort-upgrade)
    logfile "### likewise-open.preinst abort-upgrade (doing nothing)"
    exit 0
    ;;

    upgrade)
    logfile "### likewise-open.preinst upgrade"

    if dpkg --compare-versions "$2" le "4.1.2982-0ubuntu3"; then

        exec_log "pam-auth-update --package --remove likewise-open"

        # Shutdown old daemons (if running)
        if [ -f /etc/init.d/likewise-open ]
        then
            exec_log "/etc/init.d/likewise-open stop"
        fi

        save_4_1_files

        if [ -x /usr/bin/domainjoin-cli ]; then
            exec_log "/usr/bin/domainjoin-cli leave"
        fi
    fi

    # remove obsolete conffiles from previous versions
    if dpkg --compare-versions "$2" lt-nl "5.4.0"; then
        # from 4.1
        rm_conffile /etc/samba/lwiauthd.conf
        rm_conffile /etc/security/pam_lwidentity.conf
        rm_conffile /etc/default/likewise-open
        rm_conffile /etc/init.d/likewise-open
        # from 5.0
        rm_conffile /etc/init.d/npcmuxd
    fi

    if dpkg --compare-versions "$2" lt-nl "6.0.0"; then
        # Shutdown old daemons nicely
        if [ -f /etc/init.d/lsassd ]
        then
            exec_log "/etc/init.d/lsassd stop"
        fi

        for daemon in $DAEMONS_TO_HALT
        do
            if [ -x /etc/init.d/$daemon ]; then
                exec_logfile "/etc/init.d/$daemon stop"
            fi
            exec_logfile "pkill -TERM -x $daemon"
            exec_logfile "pkill -KILL -x $daemon"
            exec_logfile "rm -f /var/run/$daemon.pid"
        done

        logfile "Snapshot of processes after stopping daemons"
        exec_logfile "ps ax"

    fi
    exit 0
    ;;

esac