#!/bin/bash
#
# upseye 0.2.0 installation script
#
#
# by default the boot scripts are installed in '/etc/init.d'
# if not found, the script tries to install in '/etc/rc.d'
# if even '/etc/rc.d' does not exists, the script will terminate
# asking for a modification of the install script.
# check 'ChkInstDir' to see the algorithm 
InitDir="/etc/init.d"
AltInitDir="/etc/rc.d"
SolarisDir="/etc/init.d"
ScoDir="/etc/init.d" 

# the installation directory will be: DestDir/DestSubDir
# if 'DestDir' does not exists, user will be warned! 
DestDir="/usr/sbin"
SubDir='microdowellCL'
ScriptFile='rcupseyeCL'
PidFile="thepid"

# name of the OS
OSname=`uname`

if [ "$OSname" == "SunOS" ] ; then 
   # 'bash' executable location
   DIRbash=`type bash`
   # 'sh'   executable location
   DIRsh=`type sh`
   # 'csh'  executable location
   DIRcsh=`type csh`
   # 'perl' executable location
   DIRperl=`type perl`
   # 'cat'  executable location
   DIRcat=`type cat`
else
   # 'bash' executable location
   DIRbash=`type -p bash`
   # 'sh'   executable location
   DIRsh=`type -p sh`
   # 'csh'  executable location
   DIRcsh=`type -p csh`
   # 'perl' executable location
   DIRperl=`type -p perl`
   # 'cat'  executable location
   DIRcat=`type -p cat`
fi

if [ "$OSname" == "SCO_SV" ] ; then 
   # 'bash' executable location
   DIRbash=`type -p bash`
   # 'sh'   executable location
   DIRsh=`type -p sh`
   # 'csh'  executable location
   DIRcsh=`type -p csh`
   # 'perl' executable location
   DIRperl=`type -p perl`
   # 'cat'  executable location
   DIRcat=`type -p cat`
fi




# check of the boot script directory
function ChkBootScriptDir()
{
  # does 'InitDir' exists?
  if ! [ -d $InitDir/rc5.d ] ; then     # no, i will try for "/etc/rc.d"
    if [ -d $AltInitDir/rc5.d ] ; then    # yes: i set 'InitDir' to /etc/rc.d
      InitDir=$AltInitDir
    else    # I check if i'm on SOLARIS
      if [ "$OSname" == "SunOS" ] ; then 
         # I don't need to check the subdirs: they don't exist!!!
         InitDir=$SolarisDir
      else
         if [ "$OSname" == "SCO_SV" ] ; then 
            # I don't need to check the subdirs: they don't exist!!!
            InitDir=$ScoDir
         else 
            #clear
            echo Unable to find one of the boot scripts directories
            echo
            echo "     $InitDir/rc5.d  or  $AltInitDir/rc5.d"
            echo 
            echo please edit this installation script
            echo and modify the variable according to your needs
            echo
            echo "     'InitDir'"
            echo
            echo
            exit 2
         fi
      fi
    fi
  fi
}


function ResetVariables()
{
  BATT_CMD=""
  BATT_TIME=120
  TMP=`type -p shutdown`
  if [ "$OSname" == "SunOS" ] ; then 
     SHDWN_CMD="$TMP now"
  else
     if [ "$OSname" == "SCO_SV" ] ; then 
        SHDWN_CMD="$TMP -y now"
     else
        SHDWN_CMD="$TMP -h now"
     fi
  fi
  SHDWN_TIME=180
  UPS_MODEL="NOT DEFINED"
  UPS_LINE="Enterprise"
  UPS_CHARGE=0
  MASTER_MODE=""
  IPaddress="NOT DEFINED"
  opt=""
  RET=""
  ScriptDir=$PWD
  return
}



function Get()
{
  echo
  echo -n "$1 [$2]: "
  Ret=$2
  read RET
  if [ "$RET" = "" ] ; then
    return 0 ;  # pressed return: not modify
  else
    return 1 ;  # new value
  fi
}

function ChkLimit()
{
  if [ "$RET" == "" ]; then
    return 0
  fi
  if [ $RET -lt "$1" ]; then
    echo ""
    echo "Value UNDER limits [ < $1 ]: not accepted"
    echo "      press <enter> to continue"
    read
    return 0 ; 
  fi
  if [ $RET -gt "$2" ]; then
    echo ""
    echo "Value OVER limits [ > $2 ]: not accepted"
    echo "      press <enter> to continue"
    read
    return 0 ; 
  fi
  
  return 1 ;
}


function ChkDir()
{
  if [ -d "$RET" ]; then
    return 1 ;
  else
    echo ""
    echo "directory [ $RET ] not found: not accepted"
    echo "      press <enter> to continue"
    read
    return 0 ; 
  fi
}

function ChkProgram()
{
  `$1 $2 >/dev/null 2>/dev/null`
  if [ $? == 127 ] ; then
    clear 
    echo ===================================================================
    echo 
    echo command 
    echo "         $1"
    echo not found. 
    echo [$1] is needed by this installation script: please install it.
    echo
    echo ===================================================================
    echo
    return 0
  else
    return 1
  fi
}


function ChkPerlVersion()
{
  perl -e 'if ($] < 5.6.0) { exit(127) ; } else { exit(1) } ;'
  if [ $? == 127 ] ; then
    clear 
    echo ===================================================================
    echo 
    echo Your perl version:
    echo 
    echo ---------
    echo `perl -v`
    echo ---------
    echo
    echo is too old: please upgrade it to 5.6 or newer
    echo
    echo ===================================================================
    echo
    return 0
  else
    return 1
  fi
}


function RemoveBootFiles()
{
  FlagRemove=0

  echo
  echo -n "removing files... "

  # on SOLARIS it is a bit different...
  if [ "$OSname" == "SunOS" ] ; then 
     if [ -f $InitDir/../rc3.d/S92$ScriptFile ] ; then
       rm $InitDir/../rc3.d/S92$ScriptFile
       FlagRemove=1
     fi
     if [ -f $InitDir/$ScriptFile ] ; then
       rm $InitDir/$ScriptFile
       FlagRemove=1
     fi
  else
     if [ "$OSname" == "SCO_SV" ] ; then 
        if [ -f $InitDir/../rc2.d/S92$ScriptFile ] ; then
           rm $InitDir/../rc2.d/S92$ScriptFile
           FlagRemove=1
        fi
        if [ -f $InitDir/$ScriptFile ] ; then
           rm $InitDir/$ScriptFile
           FlagRemove=1
        fi
     else
        # delete the old files which was started TOO early
        # they were installed by the previous release 0.1.0
        # of this script
        if [ -f $InitDir/rc5.d/S02$ScriptFile ] ; then
           rm $InitDir/rc5.d/S02$ScriptFile
           FlagRemove=1
        fi
        if [ -f $InitDir/rc3.d/S02$ScriptFile ] ; then
           rm $InitDir/rc3.d/S02$ScriptFile
           FlagRemove=1
        fi
   
        if [ -f $InitDir/rc5.d/S92$ScriptFile ] ; then
           rm $InitDir/rc5.d/S92$ScriptFile
           FlagRemove=1
        fi
        if [ -f $InitDir/rc3.d/S92$ScriptFile ] ; then
           rm $InitDir/rc3.d/S92$ScriptFile
           FlagRemove=1
        fi
   
        if [ -f $InitDir/$ScriptFile ] ; then
           rm $InitDir/$ScriptFile
           FlagRemove=1
        fi
     fi
  fi


  if [ "$FlagRemove" == "1" ] ; then
    echo files removed
  else
    echo no files found: none removed!
  fi
  echo
  echo "         press <enter> to continue..."
  read
}



function EditTemplates()
{
# in this function i modify the template script files
# according to the user preferencies

# generation of the sed script to modify '$ScriptFile'
if [ -f SedScript ] ; then
   rm SedScript
fi
if [ "$OSname" == "SunOS" ] ; then 
echo s\|/bin/bash\|$DIRbash\|g 	            > SedScript
echo s\|==\|=\|g                          >> SedScript
fi
echo /__START__/,/__STOP__/ {			              >> SedScript
echo s\|__SCRIPTPATH__\|$DestDir/$SubDir\|g       >> SedScript
echo s\|__OPTIONS__\|\|g 			                 >> SedScript
echo s\|__PERLOPTIONS__\|-I $DestDir/$SubDir \|g  >> SedScript
echo s\|__PERLPATH__\|$DIRperl\|g                 >> SedScript
echo s\|__CATPATH__\|$DIRcat\|g                   >> SedScript
echo s\|__PIDFILE__\|$DestDir/$SubDir/$PidFile\|g >> SedScript
echo } 						                          >> SedScript

# modification of the "template" $ScriptFile file
if [ "$OSname" == "SCO_SV" ] ; then 
   cat $ScriptFile.template.sco | sed -f SedScript > $ScriptFile
else
   cat $ScriptFile.template | sed -f SedScript > $ScriptFile
fi
# deletion of script file
rm SedScript
# change the generated script file to "executable"
chmod +x $ScriptFile


# generation of the sed script to modify 'enterprise.ini'
echo s\|__SDDELAY__\|$SHDWN_TIME\|g	            >> SedScript
echo s\|__SHUTDOWNCMD__\|$SHDWN_CMD\|g          >> SedScript
echo s\|__E_BAT_CMDFILE__\|$BATT_CMD\|g         >> SedScript
echo s\|__E_BAT_SHUTDOWNDELAY__\|$BATT_TIME\|g  >> SedScript
echo s\|__IP_ADDRESS__\|$IPaddress\|g           >> SedScript
if [ "$MASTER_MODE" == "MASTER" ] ; then 
   echo s\|__MASTER_PORT__\|18881\|g          >> SedScript
   if [ "$UPS_MODEL" == "UpsEye Server (PC/Unix/Linux)" ] ; then
      echo s\|__MASTER_VALUE__\|0\|g             >> SedScript
   else
      echo s\|__MASTER_VALUE__\|1\|g             >> SedScript
   fi
else
   echo s\|__MASTER_PORT__\|18882\|g          >> SedScript
   echo s\|__MASTER_VALUE__\|0\|g             >> SedScript
fi  

if [ "$OSname" == "SunOS" ] ; then 
   # MsgCmd=wall -a
   echo s\|wall\|wall -a\|g              >> SedScript
fi

# modification of the "template" $ScriptFile file
cat enterpriseCL.template | sed -f SedScript > enterprise.ini
# deletion of script file
rm SedScript
# change the generated script file to "executable"
chmod +x enterprise.ini
}


function InstallFiles()
{

  if [ "$IPaddress" = "NOT DEFINED" ] ; then
    clear
    echo
    echo "Server IP address not defined:"
    echo "     Please set it!!!!"
    echo
    echo
    echo "         press <enter> to continue..."
    read
    return 0 
  fi

  if [ "$UPS_MODEL" = "NOT DEFINED" ] ; then
    clear
    echo
    echo "'Type of connection' not defined:"
    echo "     Please set it!!!!"
    echo
    echo
    echo "         press <enter> to continue..."
    read
    return 0 
  fi

  # modify the script template for
  #     'enterprise.ini'
  # and
  #     '$ScriptFile'
  #
  EditTemplates 
  

  # create installation dir
  echo
  if ! [ -d $DestDir/$SubDir ] ; then
    echo creating script directory: $DestDir/$SubDir
    mkdir $DestDir/$SubDir
  fi
  
  # copy file to destination dir ONLY if i'm not in the same directory
  if [ "$ScriptDir" != "$DestDir/$SubDir" ] ; then 
    echo -n "copying files to installation dir [$DestDir/$SubDir]: "
    cp $ScriptDir/install $DestDir/$SubDir
    cp $ScriptDir/$ScriptFile $DestDir/$SubDir
    cp $ScriptDir/*.pl  $DestDir/$SubDir
    cp $ScriptDir/*.pm  $DestDir/$SubDir
    cp $ScriptDir/*.ini $DestDir/$SubDir
    #cp $ScriptDir/*.pdf $DestDir/$SubDir
    cp $ScriptDir/*.template* $DestDir/$SubDir
    #cp $ScriptDir/msg_all $DestDir/$SubDir
    #cp $ScriptDir/installDaemon $DestDir/$SubDir
    echo OK
  fi

  # delete the old files which was started TOO early
  # they were installed by the previous release 0.1.0
  # of this script
  if [ "$OSname" == "SunOS" ] ; then 
     if [ -f $InitDir/../rc3.d/S92$ScriptFile ] ; then
       rm $InitDir/../rc3.d/S92$ScriptFile
     fi
  else
     if [ "$OSname" == "SCO_SV" ] ; then 
        if [ -f $InitDir/../rc2.d/S92$ScriptFile ] ; then
           rm $InitDir/../rc2.d/S92$ScriptFile
        fi
     else     
        if [ -f $InitDir/rc5.d/S02$ScriptFile ] ; then
           rm $InitDir/rc5.d/S02$ScriptFile
        fi
        if [ -f $InitDir/rc3.d/S02$ScriptFile ] ; then
           rm $InitDir/rc3.d/S02$ScriptFile
        fi
   
        # it exists: i copy the $ScriptFile file
        if [ -f $InitDir/rc5.d/S92$ScriptFile ] ; then
           rm $InitDir/rc5.d/S92$ScriptFile
        fi
        if [ -f $InitDir/rc3.d/S92$ScriptFile ] ; then
           rm $InitDir/rc3.d/S92$ScriptFile
        fi
     fi
  fi

  echo -n copying $ScriptFile script in [$InitDir]: 
  cp $ScriptDir/$ScriptFile $InitDir
  echo OK

  if [ "$OSname" == "SunOS" ] ; then 
     echo -n making links in directories [rc3.d and/or rc5.d]:
     cd $InitDir/../rc3.d
     ln -s $InitDir/$ScriptFile S92$ScriptFile
  else
     echo -n making link in directory [rc2.d]:
     if [ "$OSname" == "SCO_SV" ] ; then 
        cd $InitDir/../rc2.d
        ln -s $InitDir/$ScriptFile S92$ScriptFile
     else
        echo -n making links in directories [rc3.d and/or rc5.d]:
        cd $InitDir/rc5.d
        ln -s ../$ScriptFile S92$ScriptFile
        cd $InitDir/rc3.d
        ln -s ../$ScriptFile S92$ScriptFile
     fi
  fi  
  echo OK

  cd $ScriptDir
  echo .
  echo .
  echo .
  echo upseye files has been installed in [$DestDir/$SubDir] :
  echo if you need, you can modify 
  echo "      $DestDir/$SubDir/enterprise.ini"
  echo to better suite your needs: see documentation files for more info
  echo 
  echo the daemon will start at the first reboot of the system.
  echo if you want to start/stop/restart it by hand, please use the command
  echo "      $InitDir/$ScriptFile                or"
  echo "      $DestDir/$SubDir/$ScriptFile"
  echo 
  echo 
  cd $DestDir/$SubDir ;
  exit 0
}



function GetMasterSlave()
{
  clear
  echo "If you are connecting to a TCP/IP module, ONLY one 'MASTER' can"
  echo "manage all of the UPS functions"
  echo "The other connections MUST be made in 'SLAVE' mode: you will be"
  echo "able to receive the UPS status, but some of the UPS functions"
  echo "(shutdown, scheduling, ...) are disabled."
  echo "If you set more than one 'MASTER', only the first client will contact"
  echo "the UPS, the others will not be able to communicate with it!"
  echo   
  echo "Are you connecting to:"
  echo 
  echo "[1] UpsEye Server (PC/Unix/Linux)"
  echo "[2] TCP/IP module [MASTER mode]"
  echo "[3] TCP/IP module [SLAVE mode] " 
  echo
  echo "[q] quit without modifying CONNECTION method"
  echo 
  echo -n "Select option: "
  read opt1
  
  if [ "$opt1" == "" ] ; then 
    return
  fi
  case $opt1 in
    1) UPS_MODEL="UpsEye Server (PC/Unix/Linux)" ; MASTER_MODE="MASTER"   ; return  ;;
    2) UPS_MODEL="TCP/IP module" ; MASTER_MODE="MASTER"   ; return  ;; 
    3) UPS_MODEL="TCP/IP module" ; MASTER_MODE="SLAVE"    ; return  ;; 
    q) return ;;
  esac  
  
}


# =========================================================================
# =========================================================================
# =========================================================================
# =========================================================================
# =========================================================================

ResetVariables      # set variables to default values

# now i check for the required program: 'make' and 'perl'
ChkProgram perl -v && exit 1
ChkPerlVersion && exit 1

# main loop

while :
do
  clear
  echo "[0] destination directory (script location) [$DestDir]"
  echo "[1] Server IP address [$IPaddress]"
  echo "[2] maximum battery runtime (seconds) BEFORE shutdown [$BATT_TIME]"
  echo "[3] UPS shutdown delay (seconds) [$SHDWN_TIME]"
  echo "[4] command to shutdown system [$SHDWN_CMD]"
  echo "[5] command to be run when the UPS goes in battery mode [$BATT_CMD]"
  echo "[6] Type of connection: [$UPS_MODEL, $MASTER_MODE]"
  echo ""
  echo "[d] restore to defaults"
  echo "[q] quit without installing "
  echo "[u] remove files from boot script dir (remove upseye daemon)"
  echo
  echo "[s] install 'upseye' and save modification"
  echo 
  echo -n "Select option: "
  
  read opt
  
  case $opt in
    0) Get "destination directory (script location)" "$DestDir" ; ChkDir || DestDir=$RET ;;
    1) Get "Server-TCP/IP module IP address" "$IPaddress" ; IPaddress=$RET ;;
    2) Get "maximum battery runtime (seconds) BEFORE shutdown" $BATT_TIME ; ChkLimit 1 900 || BATT_TIME=$RET ;; 
    3) Get "UPS shutdown delay (seconds)" $SHDWN_TIME ; ChkLimit 60 900 || SHDWN_TIME=$RET ;;
    4) Get "command to shutdown system (<enter> = none)" "$SHDWN_CMD" ; SHDWN_CMD=$RET ;;  
    5) Get "command to be run when the UPS goes in battery mode (<enter> = none)" "$BATT_CMD" ; BATT_CMD=$RET ;;    
    6) GetMasterSlave ;; 
    d) ResetVariables ;;
    u) RemoveBootFiles ;;
    s) InstallFiles ;; 
    q) echo "" ; exit 10 ;;
  esac
done


exit