mirror of
https://github.com/coddingtonbear/django-mailbox.git
synced 2026-07-09 22:38:19 +02:00
136 lines
4.3 KiB
Python
136 lines
4.3 KiB
Python
import datetime
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import email.header
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import logging
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import os
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from django.conf import settings
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logger = logging.getLogger(__name__)
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def get_settings():
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return {
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"strip_unallowed_mimetypes": getattr(
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settings, "DJANGO_MAILBOX_STRIP_UNALLOWED_MIMETYPES", False
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),
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"allowed_mimetypes": getattr(
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settings, "DJANGO_MAILBOX_ALLOWED_MIMETYPES", ["text/plain", "text/html"]
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),
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"text_stored_mimetypes": getattr(
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settings,
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"DJANGO_MAILBOX_TEXT_STORED_MIMETYPES",
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["text/plain", "text/html"],
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),
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"altered_message_header": getattr(
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settings,
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"DJANGO_MAILBOX_ALTERED_MESSAGE_HEADER",
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"X-Django-Mailbox-Altered-Message",
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),
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"attachment_interpolation_header": getattr(
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settings,
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"DJANGO_MAILBOX_ATTACHMENT_INTERPOLATION_HEADER",
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"X-Django-Mailbox-Interpolate-Attachment",
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),
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"attachment_upload_to": getattr(
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settings,
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"DJANGO_MAILBOX_ATTACHMENT_UPLOAD_TO",
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"mailbox_attachments/%Y/%m/%d/",
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),
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"store_original_message": getattr(
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settings, "DJANGO_MAILBOX_STORE_ORIGINAL_MESSAGE", False
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),
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"compress_original_message": getattr(
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settings, "DJANGO_MAILBOX_COMPRESS_ORIGINAL_MESSAGE", False
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),
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"original_message_compression": getattr(
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settings, "DJANGO_MAILBOX_ORIGINAL_MESSAGE_COMPRESSION", 6
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),
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"default_charset": getattr(
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settings,
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"DJANGO_MAILBOX_default_charset",
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"iso8859-1",
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),
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}
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def convert_header_to_unicode(header):
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default_charset = get_settings()["default_charset"]
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def _decode(value, encoding):
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if isinstance(value, str):
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return value
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if not encoding or encoding == "unknown-8bit":
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encoding = default_charset
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return value.decode(encoding, "replace")
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try:
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return "".join(
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[
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(_decode(bytestr, encoding))
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for bytestr, encoding in email.header.decode_header(header)
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]
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)
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except UnicodeDecodeError:
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logger.exception(
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"Errors encountered decoding header %s into encoding %s.",
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header,
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default_charset,
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)
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return header.decode(default_charset, "replace")
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def get_body_from_message(message, maintype, subtype):
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"""
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Fetchs the body message matching main/sub content type.
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"""
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body = ""
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for part in message.walk():
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if part.get("content-disposition", "").startswith("attachment;"):
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continue
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if (
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part.get_content_maintype() == maintype
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and part.get_content_subtype() == subtype
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):
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charset = part.get_content_charset()
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this_part = part.get_payload(decode=True)
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if charset:
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try:
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this_part = this_part.decode(charset, "replace")
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except LookupError:
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this_part = this_part.decode("ascii", "replace")
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logger.warning(
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"Unknown encoding %s encountered while decoding "
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"text payload. Interpreting as ASCII with "
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"replacement, but some data may not be "
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"represented as the sender intended.",
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charset,
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)
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except ValueError:
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this_part = this_part.decode("ascii", "replace")
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logger.warning(
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"Error encountered while decoding text "
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"payload from an incorrectly-constructed "
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"e-mail; payload was converted to ASCII with "
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"replacement, but some data may not be "
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"represented as the sender intended."
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)
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else:
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this_part = this_part.decode("ascii", "replace")
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body += this_part
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return body
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def get_attachment_save_path(instance, filename):
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settings = get_settings()
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path = settings["attachment_upload_to"]
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if "%" in path:
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path = datetime.datetime.utcnow().strftime(path)
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return os.path.join(
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path,
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filename,
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)
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