ngrok service for Raspberry Pi

INSTRUCTIONS

1) set-up ngrok
   curl -s https://ngrok-agent.s3.amazonaws.com/ngrok.asc | sudo tee /etc/apt/trusted.gpg.d/ngrok.asc >/dev/null && echo "deb https://ngrok-agent.s3.amazonaws.com buster main" | sudo tee /etc/apt/sources.list.d/ngrok.list && sudo apt update && sudo apt install ngrok
   ngrok config add-authtoken <your token here>
2) install ssmtp
   sudo apt install ssmtp
3) crate /etc/init.d/ngrok
4) crate /home/pi/.config/ngrok/ngrok.yml
5) create a gmail app password to be used in the sendNgrokAddress.py file
6) crate /home/pi/sendNgrokAddress.py
7) set-up ngrok service
   sudo chmod +x /etc/init.d/ngrok
   sudo sudo update-rc.d ngrok defaults

ngrok

#FILE PATH: /etc/init.d/ngrok
#!/bin/sh

### BEGIN INIT INFO
# Provides:       ngrok
# Required-Start:    $local_fs $remote_fs $network $syslog $named
# Required-Stop:     $local_fs $remote_fs $network $syslog $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the ngrok tunnel
# Description:       starts ngrok using start-stop-daemon
### END INIT INFO


case "$1" in
  start)
    echo "Ngrok service is starting"
    ngrok start --all --config=/home/pi/.config/ngrok/ngrok.yml --log=stdout > /home/pi/ngrok.log &
    python /home/pi/sendNgrokAddress.py
    echo "Ngrok service was started"
    ;;
  stop)
    echo "Ngrok is stopping"
    killall ngrok
    echo "Service ngrok was stopped"
    ;;
  *)
    echo "Usage: /etc/init.d/ngrok.sh {start|stop}"
    exit 1
    ;;
esac

exit 0

ngrok.yml

#FILE PATH: /home/pi/.config/ngrok/ngrok.yml <- delete this line

version: "2"
authtoken: <your token here>
    web:
        proto: http
        addr: 80

sendNgrokAddress.py

#FILE PATH: /home/pi/sendNgrokAddress.py <- delete this line

import smtplib
import re 
import time

#Email Variables
SMTP_SERVER = 'smtp.gmail.com' #Email Server (don't change!)
SMTP_PORT = 587 #Server Port (don't change!)
GMAIL_USERNAME = '<your user here>' #change this to match your gmail account
GMAIL_PASSWORD = '<your password here>'  #change this to match your gmail app-password

class Emailer:
    def sendmail(self, recipient, subject, content):

        #Create Headers
        headers = ["From: " + GMAIL_USERNAME, "Subject: " + subject, "To: " + recipient,
                   "MIME-Version: 1.0", "Content-Type: text/html"]
        headers = "\r\n".join(headers)

        #Connect to Gmail Server
        session = smtplib.SMTP(SMTP_SERVER, SMTP_PORT)
        session.ehlo()
        session.starttls()
        session.ehlo()

        #Login to Gmail
        session.login(GMAIL_USERNAME, GMAIL_PASSWORD)

        #Send Email & Exit
        session.sendmail(GMAIL_USERNAME, recipient, headers + "\r\n\r\n" + content)
        session.quit

sender = Emailer()

sendTo = '<your email here>'
emailSubject = "Printer Tunnel"
emailContent = "Tunnel address "

time.sleep(30) #wait till Ngrok starts

with open("/home/pi/ngrok.log", "r") as fileInput:
   listLines = fileInput.readlines()
   for line in listLines:
       x = re.search(".*url=(https.*)", line)
       try:
          emailContent += x.group(1)
          print emailContent
       except:
          continue

#Sends an email to the "sendTo" address with the specified "emailSubject" as the subject and "emailContent" as the email content.
sender.sendmail(sendTo, emailSubject, emailContent)