lokses
a2fe4a49e3
Сотрудник сам подключает ящик (autoconfig, вложения, пагинация списка, надёжный IMAP-поиск); в хедере работает /api/search по разделам и сущностям с ACL. Также устойчивость Mattermost-токена для чата. Co-authored-by: Cursor <cursoragent@cursor.com>
108 lines
3.5 KiB
Python
108 lines
3.5 KiB
Python
"""Отправка писем через SMTP."""
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from __future__ import annotations
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import mimetypes
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import smtplib
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import ssl
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from email import encoders
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from email.header import Header
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from email.mime.base import MIMEBase
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from email.mime.multipart import MIMEMultipart
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from email.mime.text import MIMEText
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from apps.mail_connector.mail_settings import MailSettings
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class SmtpSendError(Exception):
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pass
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# filename, content bytes, content_type
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Attachment = tuple[str, bytes, str]
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def send_message(
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settings: MailSettings,
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*,
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username: str,
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password: str,
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sender: str,
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to_addrs: list[str],
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subject: str,
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body: str,
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cc_addrs: list[str] | None = None,
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bcc_addrs: list[str] | None = None,
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attachments: list[Attachment] | None = None,
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) -> None:
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cc_addrs = cc_addrs or []
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bcc_addrs = bcc_addrs or []
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attachments = attachments or []
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recipients = [a for a in to_addrs + cc_addrs + bcc_addrs if a]
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if attachments:
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msg = MIMEMultipart('mixed')
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body_part = MIMEMultipart('alternative')
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body_part.attach(MIMEText(body, 'plain', 'utf-8'))
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msg.attach(body_part)
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for filename, content, content_type in attachments:
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msg.attach(_make_attachment_part(filename, content, content_type))
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else:
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msg = MIMEMultipart('alternative')
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msg.attach(MIMEText(body, 'plain', 'utf-8'))
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msg['Subject'] = subject
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msg['From'] = sender
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msg['To'] = ', '.join(to_addrs)
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if cc_addrs:
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msg['Cc'] = ', '.join(cc_addrs)
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try:
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if settings.use_ssl and settings.smtp_port == 465:
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ctx = ssl.create_default_context()
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if not settings.verify_ssl:
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ctx.check_hostname = False
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ctx.verify_mode = ssl.CERT_NONE
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with smtplib.SMTP_SSL(settings.smtp_host, settings.smtp_port, context=ctx) as smtp:
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smtp.login(username, password)
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smtp.sendmail(sender, recipients, msg.as_string())
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else:
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with smtplib.SMTP(settings.smtp_host, settings.smtp_port) as smtp:
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if settings.use_ssl:
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ctx = ssl.create_default_context()
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if not settings.verify_ssl:
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ctx.check_hostname = False
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ctx.verify_mode = ssl.CERT_NONE
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smtp.starttls(context=ctx)
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smtp.login(username, password)
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smtp.sendmail(sender, recipients, msg.as_string())
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except smtplib.SMTPException as e:
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raise SmtpSendError(str(e)) from e
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except OSError as e:
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raise SmtpSendError(str(e)) from e
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def _make_attachment_part(filename: str, content: bytes, content_type: str) -> MIMEBase:
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ctype = (content_type or '').split(';')[0].strip()
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if not ctype or ctype == 'application/octet-stream':
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guessed, _ = mimetypes.guess_type(filename)
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ctype = guessed or 'application/octet-stream'
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maintype, _, subtype = ctype.partition('/')
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if not subtype:
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maintype, subtype = 'application', 'octet-stream'
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part = MIMEBase(maintype, subtype)
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part.set_payload(content)
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encoders.encode_base64(part)
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# ASCII filename preferred; otherwise RFC2047-encoded fallback
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try:
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filename.encode('ascii')
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part.add_header('Content-Disposition', 'attachment', filename=filename)
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except UnicodeEncodeError:
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part.add_header(
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'Content-Disposition',
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'attachment',
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filename=str(Header(filename, 'utf-8')),
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)
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return part
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