This is a python script that will check the WAN IP of a network and check if the ISP has updated it or not. I case of update/change the script will send an email to the designated email with the new IP.
The IP will be saved in JSON file in order to compare with the older IP and in case of change will send the notificatoin.
The credentials for this script are loaded using the python-detenv.
You need to create a .env file in the root folder of the project in the file you need to add the following lines with our sender email, receiver email and your google 16 digits password.
google-pass = <google 16 digits password>
sender-email = <sender email>
receiver-email = <receiver email>To loade the environment credentials from the .env file
load_dotenv() # load .env information
sender = os.environ.get("sender-email")
receiver = os.environ.get("receiver-email")
google = os.environ.get("google-pass")To get the Google 16 digits password you need to go follow the next steps:
- Login to your Google Account https://myaccount.google.com
- Click on security on the left menu https://myaccount.google.com/security
- Click on 2 Steps verification
- Scroll down to App Password
- Click on the > icon to add a new App
- Create an app name and click Create
- A popup window will show with your 16 digits password Save this password so you can update on the IP Check Script Direct link: https://myaccount.google.com/apppasswords?pli=1&rapt=AEjHL4O9FsLO4KIpWFl7veDJgjyfNA-2rPxmvgVm9E5NnlcK3kogsLF99FlMeGHUXDVorvZVuC1gYpsZR3mSk8Oy5CXqG7g9UA
The python script will update automatically the JSON file with the latest date the IP got updated, and will record the old IP information just for reference
{
"processTime": 1.3879907090013148,
"time-delta": "28.11 seconds",
"processDate": "2024-03-11 22:26:43.763455",
"os": "MacOS",
"location": {
"city": "Redmond",
"state": "Washington",
"country": "US"
},
"old-status": {
"old-date": "2024-03-11 22:26:14.586708",
"old-ts": 1710221174.586719,
"old-ip": "XX.XX.XX.XX"
},
"new-status": {
"new-date": "2024-03-11 22:26:43.763442",
"new-ts": 1710221203.763448,
"new-ip": "XX.XX.XX.XX"
}
}Python dependencies are:
- geocoder==1.38.1
- python-dotenv==1.0.0
- Requests==2.31.0
import smtplib, ssl, json, sys
from requests import get
from email.message import EmailMessage
from datetime import datetimeTo install dependencies simply run the below command in the same folder of the project
pip install -r requirements.txt
In case you want to install dependencies manually follow the pip command below.
pip3 instal <depedency name>The dependencies were easely exported using PipReqs https://pypi.org/project/pipreqs/
The check IP function is pretty straightforward and will use https://api.ipify.org to check the device current WAM IP and return the string variable with it.
def check_ip ():
ip = get('https://api.ipify.org').text
# print('My public IP address is: {}'.format(ip))
return ipThis function is responsible to send the email with the new IP information once the IP gets changed by the ISP.
def send_email (currentIP,now,os):
port = 465 # For SSL
smtp_server = "smtp.gmail.com"
sender_email = sender # Load sender email from .env
receiver_email = receiver # Load receiver email from .env
password = google # Load password from .env
msg = EmailMessage()
msg.set_content(f"Hyotoko's IP was updated by the ISP, make sure to use the most updated version on your VPN.\n\nInformation checked from {os}\nLast updated check was: {now}\nNew IP is: {currentIP}\n\nUpdate checks happens every 2 hours, the IP might have updated sooner.")
msg['Subject'] = f"📡 Hyotoko IP just got updated"
msg['From'] = sender_email
msg['To'] = receiver_email
context = ssl.create_default_context()
with smtplib.SMTP_SSL(smtp_server, port, context=context) as server:
server.login(sender_email, password)
server.send_message(msg, from_addr=sender_email, to_addrs=receiver_email)This function will open the JSON file that is on the same folder of the Python script and will build a dictionary with the data so we can use during the check.
def current_data ():
# Opening JSON file
f = open('data.json')
# returns JSON object as a dictionary
data = json.load(f)
f.close()
return dataThis function is build to check which Operational System is executing the IP check. The list is limited to Linux, MacOS or Windows, but you can check the documentation here https://ironpython-test.readthedocs.io/en/latest/library/sys.html#sys.platform
def osCheck ():
# Will check which OS has made the last check
if sys.platform.startswith('linux'):
os = "Linux"
elif sys.platform.startswith('darwin'):
os = "MacOS"
elif sys.platform.startswith('win32'):
os = "Windows"
return osThe script is essentially executed in the main part of the code where essentially calls all the needed functions described above and check if the IP has changed or not.
If the IP did not change it will only update the check-status portion of the JSON file and nothing else.
If the IP has changed both update-status and check-status will change with the new data and the update check dates including OS.
if __name__ == '__main__':
data = current_data() # Load JSON function
currentIP = check_ip () # Get current data
os = osCheck () # Check OS
now = str(datetime.now()) # Get current time
data['check-status']['last-check'] = now
data['check-status']['os'] = os
if currentIP != data['update-status']['old-ip']:
send_email (currentIP,now,os)
data['update-status']['last-update'] = now
data['update-status']['old-ip'] = currentIP
with open('data.json', 'w', encoding='utf-8') as f:
json.dump(data, f, ensure_ascii=False, indent=4)
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