#! /bin/sh
#
# rc.6		This file is executed by init when it goes into runlevel
#		0 (halt) or runlevel 6 (reboot). It kills all processes,
#		unmounts file systems and then either halts or reboots.
#
# Version:	0.1
#



echo -e '\E[36m'"\033[1mRunning shutdown script $0:\033[0m"

# Load global settings:
. /etc/rc.d/secu-slack.config &

# Set the path:
PATH=/sbin:/etc:/bin:/usr/bin &

# Set linefeed mode to avoid staircase effect:
stty onlcr

# Run SystemV init scripts for this runlevel:
if [ "$SYSINIT" = "1" ]; then
 . /etc/rc.d/rc.sysvinit
fi

# Find out what the user wants:
case "$0" in
	*0)
		command="halt"
		;;
	*6)
		command="reboot"
		;;
	*)
		echo -e '\E[31m'"\033[1m$0: call me as \"rc.0\" or \"rc.6\" please!\033[0m"
		exit 1
		;;
esac


## Saving / updating data part:

# Save the system time to the hardware clock and check for a broken motherboard
# RTC clock (where ioports for rtc are unknown) to prevent hwclock causing a hang:
 if ! grep -q -w rtc /proc/ioports ; then
  CLOCK_OPT="--directisa"
 fi
  if grep -q "^UTC" /etc/hardwareclock 2> /dev/null ; then
   echo -e '\E[32m'"\033[1mSaving system time to the hardware clock (UTC).\033[0m"
   hwclock $CLOCK_OPT --utc --systohc &
  else
   echo -e '\E[32m'"\033[1mSaving system time to the hardware clock (localtime).\033[0m"
   hwclock $CLOCK_OPT --localtime --systohc &
  fi

# Save the sound settings:
if [ -x /usr/sbin/alsactl ]; then
 echo -e '\E[32m'"\033[1mSaving sound settings.\033[0m"
 /usr/sbin/alsactl store &
fi

# Update the shared library links:
if [ -x /sbin/ldconfig ]; then
 echo -e '\E[32m'"\033[1mUpdating shared library links.\033[0m"
 /sbin/ldconfig &
fi

# Update the X font indexes:
if [ -x /usr/bin/fc-cache ]; then
 echo -e '\E[32m'"\033[1mUpdating X font indexes:  /usr/bin/fc-cache.\033[0m"
 /usr/bin/fc-cache  2>&1 1>/dev/null &
fi


## Stopping services part:

# Run local shutdown scripts:
if [ "$RCLOCALSHUT" = "1" ]; then
 . /etc/rc.d/rc.local_shutdown
fi

# Stop the Apache2 (httpd) web server:
if [ "$APACHE" = "1" ]; then
 echo -e '\E[32m'"\033[1mStopping the Apache web server.\033[0m"
 . /etc/rc.d/rc.httpd stop &
fi

# Stop the MySQL database:
if [ "$MYSQL" = "1" ]; then
 echo -e '\E[32m'"\033[1mStopping the MySQL database.\033[0m"
 . /etc/rc.d/rc.mysqld stop &
fi

# Stop the Samba server:
if [ "$SAMBA" = "1" ]; then
 echo -e '\E[32m'"\033[1mStopping the Samba server.\033[0m"
 . /etc/rc.d/rc.samba stop &
fi

# Stop the NFS server:
if [ "$NFS" = "1" ]; then
 echo -e '\E[32m'"\033[1mStopping the NFS server.\033[0m"
 . /etc/rc.d/rc.nfsd stop &
fi

# Stop the SSH server:
if [ "$SSH" = "1" ]; then
 echo -e '\E[32m'"\033[1mStopping the SSH server.\033[0m"
 . /etc/rc.d/rc.sshd stop &
fi

# Stop the SASL authentication daemon:
if [ "$SASL" = "1" ]; then
 echo -e '\E[32m'"\033[1mStopping the SASL auth. deamon.\033[0m"
 . /etc/rc.d/rc.saslauthd stop &
fi

# Stop the OpenLDAP services:
if [ "$OPENLDAP" = "1" ]; then
 echo -e '\E[32m'"\033[1mStopping the OpenLDAP services.\033[0m"
 . /etc/rc.d/rc.openldap stop &
fi

# Stop the message D-Bus:
if [ "$DBUS" = "1" ]; then
 echo -e '\E[32m'"\033[1mStopping the message D-bus.\033[0m"
 . /etc/rc.d/rc.messagebus stop &
fi


## Unmount, stop processes and sync part:

# Unmount any NFS, SMB, or CIFS filesystems:
echo -e '\E[32m'"\033[1mUnmounting any remote NFS, SMB and CIFS filesystems:\033[0m"
umount -vart nfs,smbfs,cifs
 
# Try to stop pppd:
PS="$(ps ax)"
if echo "$PS" | /bin/grep -q -w pppd ; then
 if [ -x /usr/sbin/ppp-off ]; then
  ppp-off &
 fi
fi

# Bring down the networking system, but first make sure that this
# isn't a diskless client with the / partition mounted via NFS:
if ! /bin/mount | /bin/grep -q 'on / type nfs' ; then
 if [ "$RCINET1" = "1" ]; then
  echo -e '\E[32m'"\033[1mStopping the networking system.\033[0m"
  . /etc/rc.d/rc.inet1 stop &
 fi
fi

# In case dhcpcd might have been manually started on the command line,
# look for the .pid file, and stop dhcpcd if it's found:
if /bin/ls /etc/dhcpc/*.pid 1> /dev/null 2> /dev/null ; then
 echo -e '\E[32m'"\033[1mStopping the DHCP client deamon.\033[0m"
 dhcpcd -k 1> /dev/null 2> /dev/null &
fi

# Stop the PCMCIA devices:
if [ "$PCMCIA" = "1" ]; then
 echo -e '\E[32m'"\033[1mStopping the PCMCIA devices.\033[0m"
 . /etc/rc.d/rc.pcmcia stop &
fi

# Turn off process accounting:
if [ "$PACCT" = "1" ]; then
 if [ -x /sbin/accton -ar /var/log/pacct ]; then
  echo -e '\E[32m'"\033[1mTurning off process accounting.\033[0m"
  accton &
 fi
fi

# Kill all processes.
# INIT is supposed to handle this entirely now, but this didn't always
# work correctly without this second pass at killing off the processes.
# Since INIT already notified the user that processes were being killed,
# we'll avoid echoing this info this time around:
if [ ! "$1" = "fast" ]; then # shutdown did not already kill all processes.
 killall5 -15
 sleep 2
 killall5 -9
fi

# Try to turn off quota:
if [ "$QUOTA" = "1" ]; then
 if /bin/grep -q quota /etc/fstab ; then
  if [ -x /sbin/quotaoff ]; then
   echo -e '\E[32m'"\033[1mTurning off filesystem quotas.\033[0m"
   quotaoff -a &
  fi
 fi
fi

# Carry a random seed between reboots:
echo -e '\E[32m'"\033[1mSaving random seed from /dev/urandom in /etc/random-seed.\033[0m"
# Use the pool size from /proc, or 512 bytes:
if [ -r /proc/sys/kernel/random/poolsize ]; then
 dd if=/dev/urandom of=/etc/random-seed count=1 bs=$(cat /proc/sys/kernel/random/poolsize) 2> /dev/null &
  else
   dd if=/dev/urandom of=/etc/random-seed count=1 bs=512 2> /dev/null &
  fi
   chmod 600 /etc/random-seed &

# Before unmounting file systems write a reboot or halt record to wtmp:
$command -w &

# Clear /var/lock/subsys:
if [ -d /var/lock/subsys ]; then
 rm -f /var/lock/subsys/* &
fi

# Clean /tmp of old and stale files:
echo -e '\E[32m'"\033[1mCleaning temporary files in /tmp.\033[0m"
find /tmp -type f -mtime +5 -exec rm -f {} \; &
find /var/tmp -type f -mtime +30 -exec rm -f {} \; &

# Turn off swap:
echo -e '\E[32m'"\033[1mTurning off swap.\033[0m"
swapoff -a &

# Umount any LVM volumes:
if [ "$LVM" = "1" ]; then
 if /bin/mount | /bin/grep -q '^/dev/mapper/' ; then
  echo -e '\E[32m'"\033[1mUnmounting LVM volumes:\033[0m"
  umount -v $(/bin/mount | /bin/grep '^/dev/mapper/' | /bin/cut -d ' ' -f 3 | /bin/tac)
 fi
fi

echo -e '\E[32m'"\033[1mUnmounting local filesystems:\033[0m"
umount -vart nonfs,noproc,nosysfs

# Close any volumes opened by cryptsetup:
if [ "$CRYPT" = "1" ]; then
 if [ -f /etc/crypttab -a -x /sbin/cryptsetup.static ]; then
  cat /etc/crypttab | grep -v "^#" | grep -v "^$" | while read line; do
   # NOTE: we only support LUKS formatted volumes (except for swap)!
   LUKS=$(echo $line | tr '\t' ' ' | tr -s ' ' | cut -f1 -d' ')
   DEV=$(echo $line | tr '\t' ' ' | tr -s ' ' | cut -f2 -d' ')
   OPTS=$(echo $line | tr '\t' ' ' | tr -s ' ' | cut -f4 -d' ')
  if /sbin/cryptsetup.static isLuks $DEV 2>/dev/null ; then
   echo -e '\E[32m'"\033[1mLocking LUKS crypt volume '${LUKS}':\033[0m"
   cryptsetup.static luksClose ${LUKS} &
   elif echo $OPTS | grep -wq swap ; then
    # If any of the volumes was used as encrypted swap,
    # then run mkswap on the underlying device -
    # in case other Linux installations on this computer should use it:
     echo -e '\E[32m'"\033[1mErasing encrypted swap '${LUKS}' and restoring normal swap on ${DEV}:\033[0m"
     cryptsetup.static remove ${LUKS} &
     mkswap $DEV &
  fi
  done
 fi
fi

# Deactivate LVM volume groups:
if [ "$LVM" = "1" ]; then
 if [ -r /etc/lvmtab -od /etc/lvm/backup ]; then
  echo -e '\E[32m'"\033[1mDeactivating LVM volume groups.\033[0m"
  vgchange -an --ignorelockingfailure &
 fi
fi

# Remount read only anything that's left mounted:
echo -e '\E[32m'"\033[1mRemounting remaining filesystems as read-only:\033[0m"
mount | awk '/dev/ { print $3 }' | while read line; do
mount -vno ro,remount $line
done

# Turn off raid devices:
if [ -x /sbin/raidstop -a -f /etc/raidtab -a /proc/mdstat ]; then
 # We can not use raidstop -a here because this will only stop
 # devices listed in the default config file which is not always
 # the case. So we look only for the active raid devices:
 if [ -f /proc/mdstat ] ; then
  mddevs=$(grep ^md /proc/mdstat | awk '{ print $1 }')
  root=$(mount | grep "md.* \/ " | awk '{ print $1 }' | sed -e 's/\/dev\///')
   for mddev in $mddevs; do
   if [ $mddev != $root ]; then
    echo -e '\E[32m'"\033[1mTurning off RAID for $mddev.\033[0m"
    raidstop /dev/$mddev 
   fi
    done
    unset mddev mddevs
 fi
fi

# This is to ensure all processes have completed:
sync
wait
sleep 1

if [ "$UPS" = "1" ]; then
 echo -e '\E[32m'"\033[1mChecking UPS.\033[0m"
 # See if this is a powerfail situation:
 if /bin/egrep -q "FAIL|SCRAM" /etc/upsstatus 2> /dev/null ; then
  # Signal UPS to shut off the inverter:
  genpowerd -k
  if [ ! $? = 0 ]; then
    echo
 echo -e '\E[31m'"\033[1mThere was an error signaling the UPS.\033[0m"
 echo -e '\E[31m'"\033[1mPerhaps you need to edit /etc/genpowerd.conf to configure\033[0m"
 echo -e '\E[31m'"\033[1mthe serial line and UPS type.\033[0m"
    # Wasting 30 seconds of precious power:
    sleep 30
  fi
 fi
fi

# Now halt (poweroff with APM or ACPI enabled kernels) or reboot:
if [ "$command" = "reboot" ]; then
 echo -e '\E[31m'"\033[1mRebooting.\033[0m"
 reboot
 else
 echo -e '\E[31m'"\033[1mPoweroff.\033[0m"
 poweroff
fi