adfreetime-auto-update

#!/bin/sh
#
# Ad-free time! update script
#
# This script automatically sends your current IP address to the Ad-free time! api.
# It can be used to update your IP adress via cron.
#
# Initial author of unblock-us script:
# Timo Schlueter (me@timo.in, www.timo.in, twitter.com/tmuuh)
#
# Autor of Ad-free time! script:
# Hans Becker
#
# Version:      1.3
# Date:         2015-06-21
#

# change into directory of script (because that's where adfreetime-username.txt is expected to be)
cd "$(dirname "$0")"

readonly userEMail=$(head -n 1 adfreetime-username.txt)
readonly logFile="/tmp/af.log"
readonly ipFile="/tmp/af-last-ip.txt"
readonly apiUrl="https://login.adfreetime.com/cron.php?email=$userEMail"
readonly curlOptions="--silent --show-error --fail --location --max-time 30"
# of you're on ddwrt add --insecure option to curlOptions

log() {
  echo "$(date) $1" >> "$logFile"
  echo $1
}

# get public id
readonly publicIp=$(curl $curlOptions http://checkip.dyndns.org/ | grep -Eo '\<[[:digit:]]{1,3}(\.[[:digit:]]{1,3}){3}\>')
exitCode=$?
if [ $exitCode -ne 0 ]; then
    log "Getting public ip failed"
    exit $exitCode
fi

# check if ip has changed
if [ -f "$ipFile" ]; then
  readonly oldIp=$(head -n 1 "$ipFile")
  if [ "$publicIp" == "$oldIp" ]; then
    log "IP ($publicIp) hasn't change since the last execution."
    exit 0
  fi
fi

# Check if email is set.
if [ -z "$userEMail" ]; then
    log "No email set."
    exit 2
else
  # Call the api
  response=$(curl $curlOptions $apiUrl)
  exitCode=$?
  if [ $exitCode -ne 0 ]; then
      log "API call failed"
      exit $exitCode
  fi

  # Check response from api
  case "$response" in
    *is\ activated*)
      log "IP ($publicIp) was already activated."
      ;;
    *Success*)
      log "New IP ($publicIp) was successfully activated."
      ;;
    *)
      log "Unknown response:"
      log "$response"
      exit 1
      ;;
  esac
fi

printf "%s" "$publicIp" > "$ipFile"
exit 0