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import uuid, datetime, time
import email
import re
class Canary:
def __init__(self, db, smtp, fromaddress):
self.db = db
self.smtp = smtp
self.fromaddress = fromaddress
def chirp(self, list, expectedreceipients):
uuid = uuid.uuid4()
now = datetime.datetime.now()
self.send(list, now, uuid)
for dest in expectedreceipients:
self.db.ping(dest, now, uuid)
def echo(self, receipient, msg):
uuid = re.match('Canary Email (.+)', msg['Subject']).group(1)
now = datetime.datetime.now()
self.db.pong(receipient, now, uuid)
def send(self, dest, date, uuid):
msg = email.message.Message()
msg['From'] = self.fromaddress
msg['To'] = dest
msg['Subject'] = "Canary Email " + str(uuid)
msg['Date'] = email.utils.formatdate(time.mktime(date.timetuple()))
self.smtp.sendmail(self.fromaddress, dest, msg.as_string())
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