unlockusername.sh

#!/bin/bash
# Unlock that account, you sly computer

# Path to CocoaDialog
CD="/Applications/Utilities/cocoaDialog.app/Contents/MacOS/cocoaDialog"

#  Quick sanity check to make sure cocoaDialog is installed in the path specified
if [ ! -e "$CD" ]; then
    echo "cocoaDialog was not found in the path specified. It may not be installed, or the path is wrong. Exiting..."
    exit 1
else
    # If cocoaDialog was found, check to make sure its the 3.0 beta 7 version
    exePath=$(echo ${CD#$(dirname "$(dirname "$CD")")/})
    cDInfoPath="$(echo "$CD" | sed "s|$exePath||")Info.plist"
    if [[ $(defaults read "$cDInfoPath" CFBundleShortVersionString) != "3.0-beta7" ]]; then
        echo "The version of cocoaDialog installed is not 3.0-beta 7. The 3.0-beta7 version is required for proper functioning of this script."
        exit 1
    fi
fi

INPUT=$("${CD}" inputbox --title "Enter username to unlock" --informative-text "Enter username to unlock:" --text "username" --float --button1 "Unlock" )

LOCKEDUSERNAME=$(echo "${INPUT}" | awk -F":" '!/1/{ print $1 }')

# Read the failed attempts and timestamp, for posterity
FAILCOUNT=$(dscl . readpl /Users/${LOCKEDUSERNAME} accountPolicyData failedLoginCount | awk '{ print $2 }')
FAILTIME=$(dscl . readpl /Users/${LOCKEDUSERNAME} accountPolicyData failedLoginTimestamp | awk '{ print $2 }')

# Reset the count
if [[ ${FAILCOUNT} -ge 1 ]]; then
    echo "User \"${LOCKEDUSERNAME}\" has failed at some point."
    echo "Reset their failures..."
    dscl . createpl /Users/${LOCKEDUSERNAME} accountPolicyData failedLoginCount 0
    echo "Reset the failed timestamp..."
    dscl . createpl /Users/${LOCKEDUSERNAME} accountPolicyData failedLoginTimestamp 0
    INEEDTOBEREMINDED=$("${CD}" msgbox --title "Restart the computer" --text "Please restart the computer, now." --float --button1 "OK")
else
    echo "I'm sorry, but user \"${LOCKEDUSERNAME}\" doesn't appear to have any issues."
fi