fix renewals, add email for vm expiration

proxstar/mail.py

@@ -0,0 +1,30 @@
+import smtplib
+from email.mime.text import MIMEText
+from email.mime.multipart import MIMEMultipart
+
+
+def send_email(toaddr, subject, body):
+    fromaddr = 'proxstar@csh.rit.edu'
+    msg = MIMEMultipart()
+    msg['From'] = fromaddr
+    msg['To'] = toaddr
+    msg['Subject'] = subject
+    body = body
+    msg.attach(MIMEText(body, 'plain'))
+    server = smtplib.SMTP('mail.csh.rit.edu', 25)
+    server.starttls()
+    text = msg.as_string()
+    server.sendmail(fromaddr, toaddr, text)
+    server.quit()
+
+
+def send_vm_expire_email(user, name, days):
+    toaddr = "{}@csh.rit.edu".format(user)
+    subject = 'Proxstar VM Expiration Notice'
+    if days != 1:
+        body = "{} is expiring in {} days. If you would like to keep this VM, please log into Proxstar and renew it.".format(
+            name, days)
+    else:
+        body = "{} is expiring in {} day. If you would like to keep this VM, please log into Proxstar and renew it.".format(
+            name, days)
+    send_email(toaddr, subject, body)