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annotate libervia/backend/tools/common/email.py @ 4304:92a886f31581 default tip @

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doc (components): new Email gateway documentation: fix 449
author Goffi <goffi@goffi.org>
date Fri, 06 Sep 2024 18:07:44 +0200
parents 060d695ae98e
children
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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) 2009-2021 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 configparser import ConfigParser
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24 from email.mime.text import MIMEText
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25 from twisted.internet import defer
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26 from twisted.mail import smtp
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27 from libervia.backend.core.constants import Const as C
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28 from libervia.backend.tools import config as tools_config
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29 from libervia.backend.core.log import getLogger
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30
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31 log = getLogger(__name__)
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32
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33
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34 def send_email(
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35 config: ConfigParser,
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36 to_emails: list[str] | str,
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37 subject: str = "",
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38 body: str = "",
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39 from_email: str | None = None,
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40 ) -> defer.Deferred:
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41 """Send an email using Libervia configuration
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42
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43 @param config: the configuration instance
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44 @param to_emails: list of recipients
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45 if unicode, it will be split to get emails
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46 @param subject: subject of the message
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47 @param body: body of the message
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48 @param from_email: address of the sender
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49 @return:Same as smtp.sendmail.
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50 """
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51 if isinstance(to_emails, str):
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52 to_emails = to_emails.split()
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53 email_host = tools_config.config_get(config, None, "email_server") or "localhost"
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54 email_from = from_email or tools_config.config_get(config, None, "email_from")
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55
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56 # we suppose that email domain and XMPP domain are identical
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57 domain = tools_config.config_get(config, None, "xmpp_domain")
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58 if domain is None:
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59 if email_from is not None:
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60 domain = email_from.split("@", 1)[-1]
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61 else:
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62 domain = "example.net"
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64 if email_from is None:
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65 email_from = "no_reply@" + domain
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66 email_sender_domain = tools_config.config_get(
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67 config, None, "email_sender_domain", domain
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68 )
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69 email_port = int(tools_config.config_get(config, None, "email_port", 25))
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70 email_username = tools_config.config_get(config, None, "email_username")
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71 email_password = tools_config.config_get(config, None, "email_password")
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72 email_auth = C.bool(tools_config.config_get(config, None, "email_auth", C.BOOL_FALSE))
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73 email_starttls = C.bool(
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74 tools_config.config_get(config, None, "email_starttls", C.BOOL_FALSE)
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75 )
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76
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77 msg = MIMEText(body, "plain", "UTF-8")
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78 msg["Subject"] = subject
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79 msg["From"] = email_from
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80 msg["To"] = ", ".join(to_emails)
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81
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82 return smtp.sendmail(
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83 email_host.encode("utf-8"),
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84 email_from.encode("utf-8"),
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85 [email.encode("utf-8") for email in to_emails],
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86 msg.as_bytes(),
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87 senderDomainName=email_sender_domain if email_sender_domain else None,
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88 port=email_port,
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89 username=email_username.encode("utf-8") if email_username else None,
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90 password=email_password.encode("utf-8") if email_password else None,
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91 requireAuthentication=email_auth,
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92 requireTransportSecurity=email_starttls,
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93 )