#!/bin/sh 

# uninstall - OpenEdge Uninstall script
#             Captures output in $HOME/OE<version>uninst.log

#*************************************************************#
#* Copyright (c) 1984-2014 by Progress Software Corporation  *#
#*                                                           *#
#* All rights reserved.  No part of this program or document *#
#* may be  reproduced in  any form  or by  any means without *#
#* permission in writing from Progress Software Corporation. *#
#*************************************************************#

#-------------------------------------------------------------------#
#  INITIALIZE VARIABLES / VERIFY ID & INSTALL DIRECTORY / SET TRAP  #
#-------------------------------------------------------------------#

PROG=`basename $0`
NULL=/dev/null

if id | grep -v uid=0 > $NULL ; then
	cat <<-EOFCAT

		$PROG: Error: You must be logged in as "root" to uninstall OpenEdge.
		Exiting...

	EOFCAT
	exit 1
fi

# Get current installDir (DLC) - uninstall lives in <installdir>/install
installDir=`(cd \`dirname $0\`/..;pwd)`
oemInstallDir=`awk -F= '/oemtargetDir/ {print $2}' $installDir/installd.ini`

# Make sure installDir is actual OpenEdge install
if [ ! -f $installDir/progress.cfg ] ; then
	cat <<-EOFCAT

		$PROG: Error: No OpenEdge installation found in "$installDir".
		Exiting...

	EOFCAT
	exit 1
fi

VERS=`awk '{for(i=1;i<=NF;i++)if($i~/^[1-9][0-9]*\.[0-9][A-z]/){print $i;break}}' $installDir/version`


# Set logfile name - make sure user can write to it
LOG=$HOME/OE${VERS}uninst.log
touch $LOG 2> $NULL
if [ $? -ne 0 ] ; then
	LOG=/tmp/OE${VERS}uninst.log
fi

OE="OpenEdge $VERS"
hasErrors=false
hasWarnings=false

export PROG NULL installDir oemInstallDir VERS LOG OE hasWarnings


#------------------------#
#  FUNCTION DEFINITIONS  #
#------------------------#

#-------------------------------------------------------------------
# Logging functions: LOG_TTY   STDOUT & STDERR to screen and logfile
#                    LOG_ONLY  STDOUT & STDERR to logfile only
#                    START_LOG Adds header to logfile - takes timestamp param
#                    END_LOG   Adds footer to logfile -   "       "       "
#                    MV_LOG    Renames/increments existing log file

# Define Field Descriptor 3 as STDOUT - for LOG functions
exec 3>&1

# This needs work to properly capture return code from command
# it always returns from tee command
LOG_TTY () {
	"$@" 2>&1 | tee -a $LOG >&3 >&2 ;
	return $? ;
}

LOG_ONLY () {
	"$@" >> $LOG ;
	return $? ;
}

START_LOG () {
	cat <<-EOFCAT > $LOG
		+++ START $OE Uninstaller $installDir/$PROG
		+++ [`date`]

	EOFCAT
	return 0 ;
}

END_LOG () {
	cat <<-EOFCAT >> $LOG

		+++ [`date`]
		+++ END $OE Uninstaller $installDir/$PROG
	EOFCAT
	return 0 ;
}

MV_LOG () {
	if [ -s $LOG ] ; then
		N=1
		while [ -f $LOG$N ] ; do
			# Increment N
			N=`expr $N + 1`
		done
		mv $LOG $LOG$N
	fi
	return 0 ;
}

#-------------------------------------------------------------------
# ECHO_BL function: echo strings with blank line(s)
#                   Parameters: BEFORE, AFTER, or BOTH

ECHO_BL () {
	where=$1
	shift
	case $where in
		BEFORE)	echo ; echo "$@"        ;;
		AFTER )	       echo "$@" ; echo ;;
		BOTH  )	echo ; echo "$@" ; echo ;;
	esac
	return 0 ;
}	

#-------------------------------------------------------------------
# ECHO_NOCR function: echo strings without newline

if type printf > $NULL 2>&1 ; then
	ECHO_NOCR () {
		printf "$@" ;
	}
elif echo "\c" | fgrep c > $NULL 2>&1 ; then
	ECHO_NOCR () {
		echo -n "$@" ;
	}
else
	ECHO_NOCR () {
		echo "$@\c" ;
	}
fi

#-------------------------------------------------------------------
# WELCOME function: Echo welcome message - exit if No to proceed

WELCOME () {
	ret=0
	LOG_TTY cat <<-EOFCAT

		 WELCOME TO THE OPENEDGE UNINSTALL UTILITY

		 Copyright (c) 1984-2014 Progress Software Corp.
		 All Rights Reserved.

		 This utility will uninstall OpenEdge $VERS from the
		 "$installDir" directory.

		 Please shut down all of your OpenEdge and Sonic
		 processes before proceeding with this uninstall.

		 Do you want to proceed with the uninstall?

	EOFCAT
	LOG_TTY ECHO_NOCR " Enter Y[es] or N[o] (CR=Yes): "
	read resp
	LOG_ONLY echo $resp
	LOG_TTY	echo
	case $resp in
		[Nn]*)
			LOG_TTY ECHO_BL AFTER "Exiting..."
			ret=1
			;;
	esac
	return $ret ;
}

#-------------------------------------------------------------------
# UNDO_ECLIPSE_PROVISIONING function: 
#   Reverses the Eclipse integration based on locations.info file
#       Returns values
#           0 : success
#           1 : failure
#           2 : no eclipse integration

UNDO_ECLIPSE_PROVISIONING () {
	# Clean up all provisioned Eclipse's
	# Running integrateArchitect.sh if it exists with the -uninstall parameter

    retval=2
    oeideDir=${installDir}/oeide
    integrationScript=${oeideDir}/integrateArchitect.sh
    integrationLocationsFile=${oeideDir}/eclipse/locations.info
	if [ -d $oeideDir -a \
         -f $integrationLocationsFile -a \
         -f $integrationScript -a \
         -x $integrationScript ] ; then
            LOG_TTY ECHO_BL BEFORE ">> Undoing Eclipse integration..."
            LOG_ONLY $integrationScript -uninstall
            
        # The locations.info file will be zero length when successful
        if [ -s $integrationLocationsFile ] ; then
            LOG_TTY ECHO_BL BEFORE ">>> Undoing Eclipse integration has failed."
            retval=1
            hasErrors=true
        else
            retval=0
        fi
    fi

	return $retval ;
}

#-------------------------------------------------------------------
# DO_OTHER_FILES function: Returns true (0) if directory argument

DO_OTHER_FILES () {
	# Clean up /etc files: 1. Remove current installDir entry
	#                      2. Remove any non-OE-install entries
	noMsgYet=true
	ProDbgCK=false
	for file in /etc/progress /etc/ProDbgCK ; do
		if [ -f $file ] ; then
			if $noMsgYet ; then
				noMsgYet=false
			fi
			if [ $file = /etc/ProDbgCK ] ; then
				ProDbgCK=true
				chmod +w $file
			fi
			LOG_TTY ECHO_BL BEFORE ">> Removing $installDir line from $file..."
			while read line ; do
				if $ProDbgCK ; then
					dir=`echo $line | sed "s/\.state=.*$//"`
				else
					dir=$line
				fi
				if [ $dir != $installDir -a -f $dir/progress.cfg ] ; then
					echo $dir
				fi
			done < $file > $file.tmp
			# Remove temp file & original?
			if [ `cat $file.tmp | wc -l` -eq 0 ] ; then
				LOG_TTY echo ">> Deleting empty $file..."
				rm -f $file $file.tmp
			else
				mv $file.tmp $file
				if $ProDbgCK ; then chmod 444 $file ; fi
			fi
		fi
	done
	return 0 ;
}

#-------------------------------------------------------------------
# IS_SYS_DIR function: Returns true (0) if directory argument
#                        is a typical system directory name
#                      Returns false (1) otherwise

IS_SYS_DIR () {
	dir=$1
	if [ $dir = . ] ; then dir=`pwd` ; fi
	case `basename $dir` in
		/ | *bin | dev | etc | home | lib | opt | tools | usr | var )
			true  ;;
		* ) false ;;
	esac
	return $? ;
}

#-------------------------------------------------------------------
# REMOVE_INSTALLDIR function: Removes installDir ONLY after verifying that
#                             installDir: 1) IS an OpenEdge directory and
#                                         2) IS NOT a "system" directory
REMOVE_INSTALLDIR () {
	ret=0
	# Don't remove DLC if in a system dir or a non-OpenEdge dir
	if IS_SYS_DIR $installDir || [ ! -f $installDir/progress.cfg ] ; then
		LOG_TTY cat <<-EOFCAT
			***Warning: $OE directory $installDir NOT removed.
			***         Possible system directory or non-OpenEdge directory.
			***         You must manually remove it.
		EOFCAT
		hasWarnings=true
		ret=2
	else
		LOG_TTY ECHO_BL BOTH ">> Removing $OE directory $installDir..."
		rm -rf $installDir
	fi
	return $ret ;
}

#-------------------------------------------------------------------
# REMOVE_OEMINSTALLDIR function: Removes oemInstallDir ONLY after verifying that
#                             oemInstallDir: 1) IS an OpenEdge directory and
#                                         2) IS NOT a "system" directory
REMOVE_OEMINSTALLDIR () {
	ret=0
	# Don't remove OEM if in a system dir or a non-OpenEdge dir
	if IS_SYS_DIR $oemInstallDir || [ ! -f $oemInstallDir/jars/fathom.jar ] ; then
		LOG_TTY cat <<-EOFCAT
			***Warning: $OE directory $oemInstallDir NOT removed.
			***         Possible system directory or non-OpenEdge directory.
			***         You must manually remove it.
		EOFCAT
		hasWarnings=true
		ret=2
	else
		LOG_TTY ECHO_BL BOTH ">> Removing $OE directory $oemInstallDir..."
		rm -rf $oemInstallDir
	fi
	return $ret ;
}

#-------------------------------------------------------------------
# Set trap to capture ^C, kill's...

trap '
	LOG_TTY ECHO_BL BEFORE "***WARNING! Program interrupt detected!"
	ECHO_BL BOTH "Exiting..."
	exit 99
' 1 2 3 4 5 6 7 8 9 10 12 13 14 15


#-------------------#
#  BEGIN UNINSTALL  #
#-------------------#

exitCode=0

cd $HOME	# Start out in home dir

MV_LOG

ECHO_BL BOTH Writing to log file: $LOG...

START_LOG

WELCOME
exitCode=$?
if [ $exitCode -ne 0 ] ; then
	END_LOG
	exit $exitCode
fi

LOG_TTY echo "> Uninstalling $OE in $installDir..."

cd $HOME	# Make sure back in home dir

UNDO_ECLIPSE_PROVISIONING

DO_OTHER_FILES

REMOVE_INSTALLDIR

LOG_TTY ECHO_BL AFTER "> Done uninstalling $OE in $installDir..."

LOG_TTY echo "> Uninstalling $OE in $oemInstallDir..."

REMOVE_OEMINSTALLDIR

LOG_TTY ECHO_BL AFTER "> Done uninstalling $OE in $oemInstallDir..."

END_LOG

if $hasErrors || $hasWarnings ; then
	if $hasErrors ; then
		exitCode=1
		EorW=Errors
	else
		exitCode=2
		EorW=Warnings
	fi
	ECHO_BL BOTH "\
$PROG: Note! $EorW were generated during the $OE uninstall.
$PROG: For more information check the \"$LOG\" file."
else
	ECHO_BL BOTH Created log file: $LOG.
fi

exit $exitCode