1 files changed, 33 insertions, 0 deletions
diff --git a/emailcanary/canary.py b/emailcanary/canary.py
new file mode 100644
index 0000000..d07e2e9
--- /dev/null
+++ b/emailcanary/canary.py
@@ -0,0 +1,33 @@
+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())
+\ No newline at end of file