ticketfrei/active_bots/mailbot.py

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#!/usr/bin/env python3
import logging
from sendmail import sendmail
import datetime
import mailbox
import email
import report
from bot import Bot
from config import config
from db import db
logger = logging.getLogger(__name__)
class Mailbot(Bot):
# returns a list of Report objects
def crawl(self, user):
reports = []
# todo: adjust to actual mailbox
try:
mails = mailbox.mbox("/var/mail/" + config['mail']['mbox_user'])
except FileNotFoundError:
logger.error("No mbox file found.", exc_info=True)
return reports
for msg in mails:
if get_date_from_header(msg['Date']) > user.get_seen_mail():
if user.get_city().lower() in msg['To'].lower():
reports.append(make_report(msg, user))
return reports
# post/boost Report object
def post(self, user, report):
recipients = user.get_mailinglist()
for rec in recipients:
rec = rec[0]
unsubscribe_text = "\n_______\nYou don't want to receive those messages? Unsubscribe with this link: "
body = report.text + unsubscribe_text + config['web']['host'] + "/city/mail/unsubscribe/" \
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+ db.mail_subscription_token(rec, user.get_city())
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if rec not in report.author:
try:
city = user.get_city()
sendmail(rec, "Ticketfrei " + city + " Report",
city=city, body=body)
except Exception:
logger.error("Sending Mail failed.", exc_info=True)
def make_report(msg, user):
"""
generates a report out of a mail
:param msg: email.parser.Message object
:return: post: report.Report object
"""
# get a comparable date out of the email
date = get_date_from_header(msg['Date'])
author = msg['From'] # get mail author from email header
if msg.is_multipart():
text = []
for part in msg.get_payload():
if part.get_content_type() == "text":
text.append(part.get_payload())
elif part.get_content_type() == "application/pgp-signature":
pass # ignore PGP signatures
elif part.get_content_type() == "multipart/mixed":
for p in part:
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if isinstance(p, str):
text.append(p)
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elif p.get_content_type() == "text":
text.append(part.get_payload())
else:
logger.error("unknown MIMEtype: " +
p.get_content_type())
else:
logger.error("unknown MIMEtype: " +
part.get_content_type())
text = '\n'.join(text)
else:
text = msg.get_payload()
post = report.Report(author, "mail", text, None, date)
user.save_seen_mail(date)
return post
def get_date_from_header(header):
"""
:param header: msg['Date']
:return: float: total seconds
"""
date_tuple = email.utils.parsedate_tz(header)
date_tuple = datetime.datetime.fromtimestamp(
email.utils.mktime_tz(date_tuple)
)
return (date_tuple - datetime.datetime(1970, 1, 1)).total_seconds()