| paul@83 | 1 | #!/usr/bin/env python |
| paul@83 | 2 | |
| paul@146 | 3 | """ |
| paul@146 | 4 | Mail preparation support. |
| paul@146 | 5 | |
| paul@146 | 6 | Copyright (C) 2014, 2015 Paul Boddie <paul@boddie.org.uk> |
| paul@146 | 7 | |
| paul@146 | 8 | This program is free software; you can redistribute it and/or modify it under |
| paul@146 | 9 | the terms of the GNU General Public License as published by the Free Software |
| paul@146 | 10 | Foundation; either version 3 of the License, or (at your option) any later |
| paul@146 | 11 | version. |
| paul@146 | 12 | |
| paul@146 | 13 | This program is distributed in the hope that it will be useful, but WITHOUT |
| paul@146 | 14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| paul@146 | 15 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
| paul@146 | 16 | details. |
| paul@146 | 17 | |
| paul@146 | 18 | You should have received a copy of the GNU General Public License along with |
| paul@146 | 19 | this program. If not, see <http://www.gnu.org/licenses/>. |
| paul@146 | 20 | """ |
| paul@146 | 21 | |
| paul@128 | 22 | from imiptools.config import MESSAGE_SENDER, OUTGOING_PREFIX |
| paul@83 | 23 | from email.mime.message import MIMEMessage |
| paul@83 | 24 | from email.mime.multipart import MIMEMultipart |
| paul@83 | 25 | from email.mime.text import MIMEText |
| paul@83 | 26 | from smtplib import LMTP, SMTP |
| paul@83 | 27 | |
| paul@83 | 28 | MESSAGE_SUBJECT = "Calendar system message" |
| paul@83 | 29 | |
| paul@83 | 30 | MESSAGE_TEXT = """\ |
| paul@139 | 31 | This is a message from the calendar system. |
| paul@83 | 32 | """ |
| paul@83 | 33 | |
| paul@87 | 34 | PREAMBLE_TEXT = """\ |
| paul@87 | 35 | This message contains several different parts, one of which will contain |
| paul@87 | 36 | calendar information that will only be understood by a suitable program. |
| paul@87 | 37 | """ |
| paul@87 | 38 | |
| paul@83 | 39 | class Messenger: |
| paul@83 | 40 | |
| paul@83 | 41 | "Sending of outgoing messages." |
| paul@83 | 42 | |
| paul@87 | 43 | def __init__(self, sender=None, subject=None, body_text=None, preamble_text=None): |
| paul@83 | 44 | self.sender = sender or MESSAGE_SENDER |
| paul@83 | 45 | self.subject = subject or MESSAGE_SUBJECT |
| paul@83 | 46 | self.body_text = body_text or MESSAGE_TEXT |
| paul@87 | 47 | self.preamble_text = preamble_text or PREAMBLE_TEXT |
| paul@83 | 48 | |
| paul@128 | 49 | def sendmail(self, recipients, data, sender=None, outgoing_bcc=None, lmtp_socket=None): |
| paul@83 | 50 | |
| paul@83 | 51 | """ |
| paul@83 | 52 | Send a mail to the given 'recipients' consisting of the given 'data', |
| paul@128 | 53 | using the given 'sender' identity if indicated, indicating an |
| paul@128 | 54 | 'outgoing_bcc' identity if indicated, delivering to a local mail system |
| paul@128 | 55 | using LMTP if 'lmtp_socket' is provided. |
| paul@445 | 56 | |
| paul@445 | 57 | The 'outgoing_bcc' argument is required when sending on behalf of a user |
| paul@445 | 58 | from the calendar@domain address, since this will not be detected as a |
| paul@445 | 59 | valid participant and handled using the outgoing transport. |
| paul@83 | 60 | """ |
| paul@83 | 61 | |
| paul@83 | 62 | if lmtp_socket: |
| paul@83 | 63 | smtp = LMTP(lmtp_socket) |
| paul@83 | 64 | else: |
| paul@83 | 65 | smtp = SMTP("localhost") |
| paul@83 | 66 | |
| paul@128 | 67 | if outgoing_bcc: |
| paul@128 | 68 | recipients = list(recipients) + ["%s+%s" % (OUTGOING_PREFIX, outgoing_bcc)] |
| paul@128 | 69 | |
| paul@86 | 70 | smtp.sendmail(sender or self.sender, recipients, data) |
| paul@83 | 71 | smtp.quit() |
| paul@83 | 72 | |
| paul@178 | 73 | def make_outgoing_message(self, parts, recipients, sender=None, outgoing_bcc=None): |
| paul@83 | 74 | |
| paul@86 | 75 | """ |
| paul@86 | 76 | Make a message from the given 'parts' for the given 'recipients', using |
| paul@128 | 77 | the given 'sender' identity if indicated, indicating an 'outgoing_bcc' |
| paul@128 | 78 | identity if indicated. |
| paul@86 | 79 | """ |
| paul@83 | 80 | |
| paul@178 | 81 | message = self._make_summary_for_parts(parts) |
| paul@83 | 82 | |
| paul@86 | 83 | message["From"] = sender or self.sender |
| paul@83 | 84 | for recipient in recipients: |
| paul@83 | 85 | message["To"] = recipient |
| paul@128 | 86 | if outgoing_bcc: |
| paul@128 | 87 | message["Bcc"] = "%s+%s" % (OUTGOING_PREFIX, outgoing_bcc) |
| paul@83 | 88 | message["Subject"] = self.subject |
| paul@83 | 89 | |
| paul@83 | 90 | return message |
| paul@83 | 91 | |
| paul@178 | 92 | def make_summary_message(self, msg, parts): |
| paul@178 | 93 | |
| paul@178 | 94 | """ |
| paul@178 | 95 | Return a simple summary using details from 'msg' and the given 'parts'. |
| paul@178 | 96 | """ |
| paul@178 | 97 | |
| paul@178 | 98 | message = self._make_summary_for_parts(parts) |
| paul@178 | 99 | self._copy_headers(message, msg) |
| paul@178 | 100 | return message |
| paul@178 | 101 | |
| paul@83 | 102 | def wrap_message(self, msg, parts): |
| paul@83 | 103 | |
| paul@83 | 104 | "Wrap 'msg' and provide the given 'parts' as the primary content." |
| paul@83 | 105 | |
| paul@178 | 106 | message = self._make_container_for_parts(parts) |
| paul@178 | 107 | payload = message.get_payload() |
| paul@178 | 108 | payload.append(MIMEMessage(msg)) |
| paul@178 | 109 | self._copy_headers(message, msg) |
| paul@178 | 110 | return message |
| paul@178 | 111 | |
| paul@178 | 112 | def _make_summary_for_parts(self, parts): |
| paul@178 | 113 | |
| paul@178 | 114 | "Return a simple summary for the given 'parts'." |
| paul@178 | 115 | |
| paul@178 | 116 | if len(parts) == 1: |
| paul@178 | 117 | return parts[0] |
| paul@178 | 118 | else: |
| paul@178 | 119 | return self._make_container_for_parts(parts) |
| paul@178 | 120 | |
| paul@178 | 121 | def _make_container_for_parts(self, parts): |
| paul@178 | 122 | |
| paul@178 | 123 | "Return a container for the given 'parts'." |
| paul@178 | 124 | |
| paul@83 | 125 | message = MIMEMultipart("mixed", _subparts=parts) |
| paul@87 | 126 | message.preamble = self.preamble_text |
| paul@178 | 127 | return message |
| paul@83 | 128 | |
| paul@178 | 129 | def _copy_headers(self, message, msg): |
| paul@83 | 130 | message["From"] = msg["From"] |
| paul@83 | 131 | message["To"] = msg["To"] |
| paul@83 | 132 | message["Subject"] = msg["Subject"] |
| paul@83 | 133 | |
| paul@83 | 134 | # vim: tabstop=4 expandtab shiftwidth=4 |
