#!/bin/sh
#
# root specific configuration task for RAC homes
# This script updates the dba group of Oracle RAC homes with Oracle EVM
#

SILENT=%SILENT%
RAC_ORA_CRS_HOME=%ORA_CRS_HOME%
RAC_DBA_GROUP=%ORA_DBA_GROUP%

if [ -z "$ECHO" ]; then ECHO=/bin/echo; fi
if [ -z "$AWK" ]; then AWK=/bin/awk; fi
if [ -z "$CP" ]; then CP=/bin/cp; fi
if [ -z "$RMF" ]; then RMF="/bin/rm -f"; fi
if [ -z "$GREP" ]; then GREP=/bin/grep; fi
if [ -z "$ID" ]; then ID=/usr/bin/id; fi

usage()
{
   printf "Usage:"
   printf "$0 [-silent]"
   printf "   [-crshome <Oracle CRS home path>]"
   printf "   [-dbagroup <the dba group of Oracle RAC homes>]"
}

validateInput()
{
   ##validates if any value is assigned to the script variables
   valid=`$ECHO $1 | $AWK '/^%/ { print "false"; }'`
   if [ "$valid" = "false" ];
   then
      $ECHO "No value set for the CRS parameter $2. Use parameter file to set values";
      usage;
      return 1;
   fi

   return 0;
}

# This script is intended to be run by root.

RUID=`$ID|$AWK -F\( '{print $2}'|$AWK -F\) '{print $1}'`
if [ ${RUID} != "root" ];then
  $ECHO "You must be logged in as root to run $0."
  $ECHO "Log in as root and restart $0 execution."
  exit 1
fi

USER_ARGS=$*

while [ $# -gt 0 ];
do
  if [ $1 = "-silent" ]; then
    SILENT=1;
  elif [ $1 = "-crshome" ]; then
    if [ $# -ge 2 ]; then
      RAC_ORA_CRS_HOME=$2;
      shift;
    else
      usage;
      exit 2
    fi
  elif [ $1 = "-dbagroup" ]; then
       if [ $# -ge 2 ]; then
	 RAC_DBA_GROUP=$2;
         shift;
       else
	 usage;
	 exit 2
       fi
  else
       usage;
       exit 2
  fi
  shift;
done

validateInput $RAC_ORA_CRS_HOME "RAC_ORA_CRS_HOME" || { $ECHO $?; exit 1; }
validateInput $RAC_DBA_GROUP "RAC_DBA_GROUP" || { $ECHO $?; exit 1; }

CRS_HOME=$RAC_ORA_CRS_HOME
export CRS_HOME
CH=$ORA_CRS_HOME

EVM_CONF_DIR=$CRS_HOME/evm/admin/conf

if $CAT $EVM_CONF_DIR/evm.auth | $AWK '/group=/ {print}' | $GREP $RAC_DBA_GROUP > /dev/null 2>&1;
then
   $ECHO ""
else 
   $CAT $EVM_CONF_DIR/evm.auth | $AWK '/group=/ {
        len=length();
        str=$0;
        grpind=index(str, "group");
        substr1=substr(str, 1, grpind-1);
        substr2=substr(str, grpind, len-grpind+1);
        printf("%%s%%s, %%s\n", substr1, "group=%ORA_DBA_GROUP%", substr2);
        next;
        }
        { print; }' > $EVM_CONF_DIR/evm.auth.$$

   status=$?

   if [ $status ];
   then
      $CP $EVM_CONF_DIR/evm.auth.$$ $EVM_CONF_DIR/evm.auth
   fi
   $RMF $EVM_CONF_DIR/evm.auth.$$
fi