1 #!/usr/bin/env python 2 3 """ 4 Mail preparation support. 5 6 Copyright (C) 2014, 2015 Paul Boddie <paul@boddie.org.uk> 7 8 This program is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free Software 10 Foundation; either version 3 of the License, or (at your option) any later 11 version. 12 13 This program is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 15 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 16 details. 17 18 You should have received a copy of the GNU General Public License along with 19 this program. If not, see <http://www.gnu.org/licenses/>. 20 """ 21 22 from imiptools.config import MESSAGE_SENDER, OUTGOING_PREFIX 23 from email.mime.message import MIMEMessage 24 from email.mime.multipart import MIMEMultipart 25 from email.mime.text import MIMEText 26 from smtplib import LMTP, SMTP 27 28 MESSAGE_SUBJECT = "Calendar system message" 29 30 MESSAGE_TEXT = """\ 31 This is a message from the calendar system. 32 """ 33 34 PREAMBLE_TEXT = """\ 35 This message contains several different parts, one of which will contain 36 calendar information that will only be understood by a suitable program. 37 """ 38 39 class Messenger: 40 41 "Sending of outgoing messages." 42 43 def __init__(self, sender=None, subject=None, body_text=None, preamble_text=None): 44 self.sender = sender or MESSAGE_SENDER 45 self.subject = subject or MESSAGE_SUBJECT 46 self.body_text = body_text or MESSAGE_TEXT 47 self.preamble_text = preamble_text or PREAMBLE_TEXT 48 49 def sendmail(self, recipients, data, sender=None, outgoing_bcc=None, lmtp_socket=None): 50 51 """ 52 Send a mail to the given 'recipients' consisting of the given 'data', 53 using the given 'sender' identity if indicated, indicating an 54 'outgoing_bcc' identity if indicated, delivering to a local mail system 55 using LMTP if 'lmtp_socket' is provided. 56 """ 57 58 if lmtp_socket: 59 smtp = LMTP(lmtp_socket) 60 else: 61 smtp = SMTP("localhost") 62 63 if outgoing_bcc: 64 recipients = list(recipients) + ["%s+%s" % (OUTGOING_PREFIX, outgoing_bcc)] 65 66 smtp.sendmail(sender or self.sender, recipients, data) 67 smtp.quit() 68 69 def make_message(self, parts, recipients, sender=None, outgoing_bcc=None): 70 71 """ 72 Make a message from the given 'parts' for the given 'recipients', using 73 the given 'sender' identity if indicated, indicating an 'outgoing_bcc' 74 identity if indicated. 75 """ 76 77 message = MIMEMultipart("mixed", _subparts=parts) 78 message.preamble = self.preamble_text 79 payload = message.get_payload() 80 payload.insert(0, MIMEText(self.body_text)) 81 82 message["From"] = sender or self.sender 83 for recipient in recipients: 84 message["To"] = recipient 85 if outgoing_bcc: 86 message["Bcc"] = "%s+%s" % (OUTGOING_PREFIX, outgoing_bcc) 87 message["Subject"] = self.subject 88 89 return message 90 91 def wrap_message(self, msg, parts): 92 93 "Wrap 'msg' and provide the given 'parts' as the primary content." 94 95 message = MIMEMultipart("mixed", _subparts=parts) 96 message.preamble = self.preamble_text 97 payload = message.get_payload() 98 payload.insert(0, MIMEText(self.body_text)) 99 payload.append(MIMEMessage(msg)) 100 101 message["From"] = msg["From"] 102 message["To"] = msg["To"] 103 message["Subject"] = msg["Subject"] 104 105 return message 106 107 # vim: tabstop=4 expandtab shiftwidth=4