runner.py

from bs4 import BeautifulSoup
import urllib2
import re
import os
import smtplib
import yaml

from email.mime.text import MIMEText

SERVERNAME = "MyMachine"
EMAIL = "<email>"
PASSWORD = "<password>"
SMTP_SERVER = "smtp.163.com"
SMTP_SERVER_PORT = '25'

BASE_DIR = os.path.dirname(os.path.abspath(__file__))

logFile = os.path.join(BASE_DIR, "autoipchangenotifier.log")


def main():
    request = urllib2.urlopen(
        'http://www.baidu.com/s?wd=ip&rsv_spt=1&rsv_iqid=0xbefbb8610000747d&issp=1&f=8&rsv_bp=0&rsv_idx=2&ie=utf-8&tn=baiduhome_pg&rsv_enter=1&rsv_sug3=4&rsv_sug1=3&rsv_sug7=100&rsv_sug2=0&inputT=1648&rsv_sug4=1648'
    )

    soup = BeautifulSoup(request)
    ipResponse = soup.find('div', {'class': 'result-op c-container'}).get("fk")
    print "Current IP: %s" % ipResponse
    ip = re.search('[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+', str(ipResponse)).group(0)

    prevIp = ip

    try:
        with open(logFile, 'r') as log:
            prevIp = log.readline()
            log.close()
            print "Previous IP: %s" % prevIp
    except IOError:
        print "Fail to get previous ip"

    if ip != prevIp:
        target_emails = yaml.load(open(
            os.path.join(os.path.dirname(__file__), 'emails.yaml')))['emails']
        for recipient in target_emails:
            msg = MIMEText("New IP address for {servername} is {ip}".format(
                servername=SERVERNAME, ip=ip
            ))
            msg['Subject'] = 'IP address of {servername} Changed'.format(
                servername=SERVERNAME
            )
            msg['From'] = EMAIL
            print "Connecting to smtp server"
            server = smtplib.SMTP(SMTP_SERVER, SMTP_SERVER_PORT)
            server.ehlo()
            server.starttls()
            server.ehlo()
            server.login(EMAIL, PASSWORD)

            msg['To'] = recipient
            print 'sending email'
            server.sendmail(EMAIL, recipient, msg.as_string())
            server.quit()
            print "Success!"

    with open(logFile, 'w') as log:
        log.write(ip)
        log.close()


if __name__ == "__main__":
    main()