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annotate sat/tools/common/email.py @ 3465:1c7f4ce6a4a2

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tools (common/email): try to guess sender domain when necessary: when `DNSNAME` is `localhost.localdomain` and is `mail_sender_domain` is not set, a guess is done to find a proper domain, using `email_from`.
author Goffi <goffi@goffi.org>
date Fri, 19 Feb 2021 15:53:24 +0100
parents 559a625a236b
children be6d91572633
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python3
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2
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3
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4 # SàT: a jabber client
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5 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 """email sending facilities"""
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21
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22
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23 from email.mime.text import MIMEText
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24 from twisted.mail import smtp
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25 from sat.core.constants import Const as C
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26 from sat.tools import config as tools_config
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27 from sat.core.log import getLogger
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29 log = getLogger(__name__)
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31
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32 def sendEmail(config, to_emails, subject="", body="", from_email=None):
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33 """Send an email using SàT configuration
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34
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35 @param config (SafeConfigParser): the configuration instance
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36 @param to_emails(list[unicode], unicode): list of recipients
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37 if unicode, it will be split to get emails
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38 @param subject(unicode): subject of the message
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39 @param body(unicode): body of the message
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40 @param from_email(unicode): address of the sender
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41 @return (D): same as smtp.sendmail
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42 """
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43 if isinstance(to_emails, str):
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44 to_emails = to_emails.split()
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45 email_host = tools_config.getConfig(config, None, "email_server") or "localhost"
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46 email_from = tools_config.getConfig(config, None, "email_from")
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47 if email_from is None:
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48 # we suppose that email domain and XMPP domain are identical
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49 domain = tools_config.getConfig(config, None, "xmpp_domain", "example.net")
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50 email_from = "no_reply@" + domain
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51 email_sender_domain = tools_config.getConfig(config, None, "email_sender_domain")
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52 if email_sender_domain is None and smtp.DNSNAME == b"localhost.localdomain":
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53 try:
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54 email_sender_domain = email_from.split('@')[1]
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55 except IndexError:
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56 log.warning(
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57 "Can't set email_sender_domain domain du to invalid email_from: "
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58 f"{email_from!r}")
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59 email_port = int(tools_config.getConfig(config, None, "email_port", 25))
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60 email_username = tools_config.getConfig(config, None, "email_username")
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61 email_password = tools_config.getConfig(config, None, "email_password")
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62 email_auth = C.bool(tools_config.getConfig(config, None, "email_auth", C.BOOL_FALSE))
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63 email_starttls = C.bool(tools_config.getConfig(config, None, "email_starttls",
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64 C.BOOL_FALSE))
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66 msg = MIMEText(body, "plain", "UTF-8")
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67 msg["Subject"] = subject
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68 msg["From"] = email_from
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69 msg["To"] = ", ".join(to_emails)
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70
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71 return smtp.sendmail(
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72 email_host.encode("utf-8"),
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73 email_from.encode("utf-8"),
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74 [email.encode("utf-8") for email in to_emails],
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75 msg.as_bytes(),
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76 senderDomainName=email_sender_domain if email_sender_domain else None,
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77 port=email_port,
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78 username=email_username.encode("utf-8") if email_username else None,
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79 password=email_password.encode("utf-8") if email_password else None,
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80 requireAuthentication=email_auth,
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81 requireTransportSecurity=email_starttls,
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82 )