#!/bin/bash
##########################################################################
# Script		:	Change FW-PW
# Autor			:	Andreas Vogel
# Copyright		:	NEXT Enterprise gmbh, 2021
##########################################################################
unset setpassword_fv
unset rotatepassword_fv
unset adduser_fv

############################################# Jamf Hepler Messanger #############################################################

jamfHelper="/Library/Application Support/JAMF/bin/jamfHelper.app/Contents/MacOS/jamfHelper"
jamf="/usr/local/bin/jamf"

ErrorIcon=""
Error="An unexpected error has occurred. The encryption does not work properly. Please contact Mac support."
MessageIcon="/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/ToolbarCustomizeIcon.icns"
Message="The Filevault setting must be updated. Please enter your current Windows password in the next window."


############################################# Variablen #########################################################################
Status=$(fdesetup status | cut -d ' ' -f 3)
echo $Status
user=$(stat -f '%u %Su' /dev/console | cut -d ' ' -f 2)

adminName="ladmin"
adminPass=""

############################################# Funktion #########################################################################

enable_fv () {
expect <<EOF
spawn fdesetup enable
expect "Enter the user name:"
send "$adminName\r"
expect "Enter the password for user $user:"
send "$adminPass\r"
expect EOF
EOF
}


rotatepassword_fv () {
expect <<EOF
spawn fdesetup changerecovery -personal
expect "Enter the user name:"
send "$adminName\r"
expect "Enter the password for user $user:"
send "$adminPass\r"
expect EOF
EOF
}

adduser_fv () {
expect <<EOF
spawn fdesetup add -usertoadd $user
expect "Enter the primary user name:"
send $adminName\r
expect "Enter the password for the user $adminName:"
send $adminPass\r
expect "Enter the password for the added user $user:"
send $APASS\r
expect
EOF
}

############################################# Ausführung #############################################################################

if [[ $Status == "Off." ]]
	then
		HELPER=$("$jamfHelper" -windowType utility -icon "$MessageIcon" -title "Error" -description "$Message" -button1 "OK" -defaultButton 1)
		echo "Exit Code: FileVault is disabled and will now be enabled."
		
		APASS=$(osascript -e 'text returned of (display dialog "Please enter your current Windows password" with hidden answer default answer "" buttons {"OK"} default button 1)')
		if enable_fv
			then 	
				sleep 30
                
				if adduser_fv
					then
						jamf recon
					else
						printf HELPER=$("$jamfHelper" -windowType utility -icon "$ErrorIcon" -title "Error" -description "$Error" -button1 "OK" -defaultButton 1)
						echo "Exit Code: FileVault 2 wurde aktiviert. User konnte nicht hinzugefügt werden."
				fi
							
			else
						printf HELPER=$("$jamfHelper" -windowType utility -icon "$ErrorIcon" -title "Error" -description "$Error" -button1 "OK" -defaultButton 1)
						echo "Exit Code: FileVault 2 konnte nicht aktiviert werden."
				fi
	else
		
		rotatepassword_fv
		jamf recon
		echo "FileVault is active. The key is changed"
fi