#!/bin/sh

# Description: Ignite-UX via NFSV4 and SSH tunnel
#
# If you obtain this script via Web, convert it to Unix format.
# For example:
# dos2ux HP-UX-ignite-via-NFSv4-and-SSH-tunnel.sh.txt > HP-UX-ignite-via-NFSv4-and-SSH-tunnel.sh
#
# Last Update: 24 May 2012
# Designed by: Dusan U. Baljevic (dusan.baljevic@ieee.org)
# Coded by:    Dusan U. Baljevic (dusan.baljevic@ieee.org)
#
# Due to bugs with Secure Shell on HP-UX (GR8 Calls QXCR4000252191
# and QXCR1001216058), I used OpenSSH 6.0p1 from Porting and
# Archiving Centre for HP-UX

# Set default PATH
#
PATH=/usr/bin:/usr/sbin:/sbin:/opt/ignite/bin; export PATH

# The name of the Ignite-UX server
#
IGNHOST="ignserv"

MYHOST=$(uname -n)

# The port used on localhost for tunneling NFSv4 via SSH
#
PORT="2323"

# Default NFS port
#
NFSPORT="2049"

# mount and umount programs and Ignite save_config
#
MOUNTCMD="/sbin/mount"
UMOUNTCMD="/sbin/umount"
SAVECFG="/opt/ignite/bin/save_config"

# File name extension to save original programs
#
EXT="IGN"

# Set up singal handling
#
trap "INTERRUPT_HANDLER" 1 2 3 9 15

# Prerequisites for NFS premounts
#
mountcmd() {
   # QXCR1001169724 provides this suggestion
   #  
   echo "INFO: Executing mount and umount program changes in /sbin"

   cd /sbin
   if [ $? -ne 0 ]
   then
      echo "ERROR: Cannot cd to /sbin"
      exit 1
   fi

   mv $MOUNTCMD ${MOUNTCMD}.${EXT}

   if [ $? -eq 0 ]
   then
      ln -s /usr/bin/true $MOUNTCMD
   else
      echo "ERROR: Cannot copy $MOUNTCFG"
      exit 1
   fi

   mv $UMOUNTCMD ${UMOUNTCMD}.${EXT}
   if [ $? -eq 0 ]
   then
      ln -s /usr/bin/true $UMOUNTCMD
   else
      echo "ERROR: Cannot copy $UMOUNTCFG"
      exit 1
   fi

   echo "INFO: Modifying $SAVECFG"
   cp -p $SAVECFG ${SAVECFG}.${EXT}
   if [ $? -eq 0 ]
   then
      sed -e "s/^mount -lp/mount.${EXT} -lp/g" $SAVECFG > ${SAVECFG}.$$
      if [ -s "${SAVECFG}.$$" ]
      then
         mv ${SAVECFG}.$$ $SAVECFG
         chown bin:bin $SAVECFG
         chmod 755 $SAVECFG
      fi
   else
      echo "ERROR: Cannot copy $SAVECFG"
      exit 1
   fi
}

# Cleanup after the work is done
#
cleancmd() {
   if [ \( -x "${MOUNTCMD}.${EXT}" \) -a \( -x "${UMOUNTCMD}.${EXT}" \) ]
   then
      rm $MOUNTCMD
      rm $UMOUNTCMD
      mv ${MOUNTCMD}.${EXT} $MOUNTCMD
      mv ${UMOUNTCMD}.${EXT} $UMOUNTCMD
      mv ${SAVECFG}.${EXT} $SAVECFG
      umount -f /var/opt/ignite/recovery/client_mnt
      umount -f /var/opt/ignite/recovery/arch_mnt
      pkill -f "ssh -fN -L"
   fi
}

# Catch interrupts and handle them
#
INTERRUPT_HANDLER() {
   trap "" 1 2 3 9 15
   echo "WARN: Interrupt received... Terminating program and cleaning up"
   cleancmd
   exit 0
}

SSHtunnel() {
   echo "INFO: Creating tunnel..."
   echo "CMD: ssh -fN -L ${PORT}:${IGNHOST}:${NFSPORT} ${IGNHOST}"
   /usr/local/bin/ssh -fN -L ${PORT}:${IGNHOST}:${NFSPORT} ${IGNHOST}
   if [ $? -ne 0 ]
   then
      echo "ERROR: SSH tunnel failed"
      exit 1
   else
      echo "SUCCESS: SSH tunnel created"
   fi
}

NFSv4mnt() {
   echo "INFO: Running NFSv4 mount via SSH tunnel..."

   echo "CMD: mount -o port=${PORT},vers=4 localhost:/var/opt/ignite/clients /var/opt/ignite/recovery/client_mnt"
   ${MOUNTCMD}.${EXT} -o port=${PORT},vers=4 localhost:/var/opt/ignite/clients /var/opt/ignite/recovery/client_mnt
   if [ $? -ne 0 ]
   then
      echo "ERROR: NFS mount of ${IGNHOST}:/var/opt/ignite/clients failed"
      exit 1
   else
      echo "SUCCESS: NFS mount of ${IGNHOST}:/var/opt/ignite/clients created"
   fi

   echo "CMD: mount -F nfs -o port=${PORT},vers=4 localhost:/var/opt/ignite/recovery/archives/${MYHOST} /var/opt/ignite/recovery/arch_mnt"
   ${MOUNTCMD}.${EXT} -F nfs -o port=${PORT},vers=4 localhost:/var/opt/ignite/recovery/archives/${MYHOST} /var/opt/ignite/recovery/arch_mnt
   if [ $? -ne 0 ]
   then
      echo "ERROR: NFS mount of ${IGNHOST}:/var/opt/ignite/recovery/archives/${MYHOST} failed"
      exit 1
   else
      echo "SUCCESS: NFS mount of ${IGNHOST}:/var/opt/ignite/recovery/archives/${MYHOST} created"
   fi
}

Ignitebck() {
   echo "INFO: Running Ignite backups on server $IGNHOST"
   make_net_recovery -s localhost -P s -x inc_entire=vg00 -x exclude=/tmp -x exclude=/var/tmp -d "Archive_of_${MYHOST}_via_NFSv4"
   if [ $? -ne 0 ]
   then
      echo "ERROR: Ignite backups have errors"
      cleancmd
      exit 1
   else
      echo "SUCCESS: Ignite backups completed"
   fi
}

echo "INFO: Memory usage before Ignite-UX backups"
swapinfo -tm

mountcmd

SSHtunnel

NFSv4mnt

Ignitebck

cleancmd

echo "INFO: Memory usage after Ignite-UX backups"
swapinfo -tm

exit 0