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webdiff.py
executable file
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webdiff.py
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#!/usr/bin/env python2
# -*- coding: UTF-8 -*-
import os
import sys
import time
import atexit
import optparse
from webpage import *
from logger import Logger
from email_recipient import *
from server_credentials import *
from updater import WebPageUpdater
from mailsender import MailSender
from console_interface import MenuHandler
logger = Logger('webdiff')
logger.addLogFile('webdiff.log')
def _restore_server_credentials():
data_path = os.path.join(os.path.dirname(sys.argv[0]), 'data/smtp.srv')
return ServerCredentialsFromFile(data_path)
def _restore_email_recipients(email_recipients):
# Load email recipients from file
data_path = os.path.join(os.path.dirname(sys.argv[0]), 'data')
for f in os.listdir(data_path):
if f.endswith('.eml'):
r = EmailRecipientFromFile(os.path.join(data_path, f))
email_recipients.append(r)
logger.info('[+] Loaded ' + r.name + ' from ' + data_path)
def _backup_email_recipients(email_recipients):
# Save email recipients to file
data_path = os.path.join(os.path.dirname(sys.argv[0]), 'data')
for r in email_recipients:
r.toFile(data_path)
logger.info('[s] Saved ' + r.name + ' to ' + data_path)
def _restore_webpages(webpages):
# Load webpages from file
data_path = os.path.join(os.path.dirname(sys.argv[0]), 'data')
for f in os.listdir(data_path):
if f.endswith('.web'):
p = WebPageFromFile(os.path.join(data_path, f))
webpages.append(p)
logger.info('[+] Loaded ' + p.name + ' from ' + data_path)
def _backup_webpages(webpages):
# Save webpages to file
data_path = os.path.join(os.path.dirname(sys.argv[0]), 'data')
for p in webpages:
p.toFile(data_path)
logger.info('[s] Saved ' + p.name + ' to ' + data_path)
def update_callback(updated_webpages, credentials, email_recipients, email_enabled):
msg = ''
data_path = os.path.join(os.path.dirname(sys.argv[0]), 'data')
for p in updated_webpages:
p.toFile(data_path)
msg += p.getData(strip_header=False)
updated_webpages.remove(p)
logger.debug('Notification:\n' + msg)
if email_enabled:
mailer = MailSender(credentials)
mailer.send(msg, email_recipients)
else:
logger.info('[>] EMAIL THAT WOULD BE SENT:\n%s\n' % msg)
#urls = ["http://192.168.5.3/~piero/test.html", # Test page
# "http://www.lootedart.com/MFV5EO17069", # Lootedart.com | About Us [0]
# "http://www.christies.com/about/careers/internships/london/", # Christie's Internships London [35514]
# "http://www.peoplebank.com/pbank/owa/christies.vacancies", # Christie's Jobs London [0]
# "http://www.christies.com/about/careers/internships/london/saleroom-assistant.aspx", # Christie's UK Saleroom Assistants [35500]
# ]
updaters = {}
webpages = []
updated_webpages = []
email_recipients = []
def start_updaters(updaters, server_credentials, send_email, as_daemon=False):
for wp in webpages:
if wp.name not in updaters.keys():
try:
logger.debug("[o] Spawning new updater for " + wp.name)
threads_count = len(updaters)
cb_arg = {'updated_webpages': updated_webpages,
'credentials': server_credentials,
'email_recipients': email_recipients,
'email_enabled' : send_email,
}
current_updater = WebPageUpdater(threadId = threads_count,
webpage = wp,
updaters = updaters,
callback = update_callback,
callback_arg = cb_arg,
run_once = (as_daemon == False))
updaters[wp.name] = current_updater
current_updater.start()
del current_updater
except Exception, e:
logger.error("[!] Failed to spawn new updater for " + wp.name)
logger.error(str(e))
time.sleep(1)
else:
logger.warning('[w] Updater already running for ' + wp.name)
def stop_updaters(updaters):
logger.info("Terminating all updaters...")
for key, value in updaters.items():
logger.debug("[x] Killing updater for " + key)
value.nuke()
def createDaemon():
'''
Detach a process from the controlling terminal and run it in the
background as a daemon.
'''
# First fork
try:
pid = os.fork()
if pid > 0:
os._exit(0) # Exit first parent
except OSError, e:
raise Exception, str(e)
os.chdir('/')
os.setsid() # Become session leader
os.umask(0)
# Second fork
try:
pid = os.fork()
if pid > 0:
os._exit(0) # Exit first parent
except OSError, e:
raise Exception, str(e)
def _exit_handler(webpages, email_recipients, updaters):
logger.info('--- EXIT ---')
stop_updaters(updaters)
_backup_webpages(webpages)
_backup_email_recipients(email_recipients)
def main():
parser = optparse.OptionParser()
parser.add_option('-i', '--interactive',
help='Interactive mode',
dest='interactive',
default=False,
action='store_true')
parser.add_option('-e', '--email',
help="Enable email notifications",
dest='email_enabled',
default=False,
action='store_true')
parser.add_option('-d', '--daemon',
help='Run as daemon',
dest='run_as_daemon',
default=False,
action='store_true')
(opts, args) = parser.parse_args()
atexit.register(_exit_handler,
webpages,
email_recipients,
updaters)
server_credentials = _restore_server_credentials()
_restore_email_recipients(email_recipients)
_restore_webpages(webpages)
if opts.interactive:
# Use the console interface
consoleInterface = MenuHandler(data={'webpages': webpages,
'email_recipients' : email_recipients,
'start_cb': start_updaters,
'start_cb_arg': [updaters, server_credentials, opts.email_enabled],
'stop_cb': stop_updaters,
'stop_cb_arg': updaters})
consoleInterface.start()
try:
consoleInterface.join()
except KeyboardInterrupt:
logger.debug('Forcing shutdown...')
stop_updaters(updaters)
if consoleInterface.isAlive():
logger.debug('Stopping consoleInterface...')
consoleInterface.stop()
else:
if opts.run_as_daemon:
logger.info('Running as daemon')
createDaemon()
start_updaters(updaters, server_credentials, opts.email_enabled, opts.run_as_daemon)
threads = updaters.values()
threads[0].join()
sys.exit()
if __name__ == "__main__":
main()