Cédric Krier
070de7394c
The default policy uses the EmailMessage class instead of the Message class from the compat32 policy. The EmailMessage decodes automatically the header values. Closes #13607 (grafted from efda7f04d7cb78ead641821a8417feeeb512f2f6) --HG-- branch : 7.0
324 lines
11 KiB
Python
324 lines
11 KiB
Python
# This file is part of Tryton. The COPYRIGHT file at the top level of
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# this repository contains the full copyright notices and license terms.
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import base64
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import email
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import json
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import re
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import urllib
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import uuid
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from email.policy import default as email_policy_default
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from email.utils import getaddresses
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from functools import partial
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from trytond.config import config
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from trytond.model import ModelSQL, ModelView, fields, sequence_ordered
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from trytond.pool import Pool
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from trytond.pyson import Eval
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from trytond.transaction import Transaction
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from trytond.url import http_host
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if config.getboolean('inbound_email', 'filestore', default=True):
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file_id = 'data_id'
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store_prefix = config.get('inbound_email', 'store_prefix', default=None)
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else:
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file_id = store_prefix = None
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class Inbox(ModelSQL, ModelView):
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"Inbound Email Inbox"
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__name__ = 'inbound.email.inbox'
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name = fields.Char("Name", required=True)
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identifier = fields.Char("Identifier", readonly=True)
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endpoint = fields.Function(
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fields.Char(
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"Endpoint",
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help="The URL where the emails must be posted."),
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'on_change_with_endpoint')
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rules = fields.One2Many(
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'inbound.email.rule', 'inbox', "Rules",
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help="The action of the first matching line is run.")
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@classmethod
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def __setup__(cls):
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super().__setup__()
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cls._buttons.update(
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new_identifier={
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'icon': 'tryton-refresh',
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},
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)
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@fields.depends('identifier')
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def on_change_with_endpoint(self, name=None):
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if self.identifier:
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url_part = {
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'identifier': self.identifier,
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'database_name': Transaction().database.name,
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}
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return http_host() + (
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urllib.parse.quote(
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'/%(database_name)s/inbound_email/inbox/%(identifier)s'
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% url_part))
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@classmethod
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@ModelView.button
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def new_identifier(cls, inboxes):
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for inbox in inboxes:
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if inbox.identifier:
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inbox.identifier = None
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else:
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inbox.identifier = uuid.uuid4().hex
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cls.save(inboxes)
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def process(self, email_):
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assert email_.inbox == self
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for rule in self.rules:
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if rule.match(email_.as_dict()):
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email_.rule = rule
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rule.run(email_)
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return
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def _email_text(message, type_='plain'):
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if message.get_content_maintype() != 'multipart':
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return message.get_payload()
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for part in message.walk():
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if part.get_content_type() == f'text/{type_}':
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return part.get_payload()
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def _email_attachments(message):
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if message.get_content_maintype() != 'multipart':
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return
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for i, part in enumerate(message.walk()):
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if part.get_content_maintype() == 'multipart':
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continue
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if 'attachment' not in part.get('Content-Disposition', '').lower():
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continue
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filename = part.get_filename()
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yield {
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'filename': filename,
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'type': part.get_content_type(),
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'data': part.get_payload(decode=True),
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}
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class Email(ModelSQL, ModelView):
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"Inbound Email"
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__name__ = 'inbound.email'
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inbox = fields.Many2One(
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'inbound.email.inbox', "Inbox",
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required=True, readonly=True, ondelete='CASCADE')
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data = fields.Binary(
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"Data", file_id=file_id, store_prefix=store_prefix,
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required=True, readonly=True)
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data_id = fields.Char("Data ID", readonly=True)
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data_type = fields.Selection([
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('mailchimp', "Mailchimp"),
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('mailpace', "MailPace"),
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('postmark', "Postmark"),
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('raw', "Raw"),
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('sendgrid', "SendGrid"),
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], "Data Type", required=True, readonly=True)
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rule = fields.Many2One('inbound.email.rule', "Rule", readonly=True)
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result = fields.Reference("Result", selection='get_models', readonly=True)
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@classmethod
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def __setup__(cls):
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super().__setup__()
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cls._order = [('id', 'DESC')]
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cls._buttons.update(
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process={
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'readonly': Eval('rule'),
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'depends': ['rule'],
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},
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)
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@classmethod
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def get_models(cls):
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return [(None, "")] + Pool().get('ir.model').get_name_items()
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@classmethod
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def from_webhook(cls, inbox, data, data_type):
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emails = []
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if data_type in {'raw', 'mailpace', 'sendgrid', 'postmark'}:
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emails.append(cls(inbox=inbox, data=data, data_type=data_type))
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elif data_type == 'mailchimp':
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payload = json.loads(data)
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for event in payload['mandrill_events']:
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if event['event'] == 'inbound':
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emails.append(cls(
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inbox=inbox,
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data=json.dumps(event).encode('utf-8'),
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data_type=data_type))
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return emails
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@classmethod
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@ModelView.button
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def process(cls, emails):
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for email_ in emails:
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if not email_.rule:
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email_.inbox.process(email_)
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cls.save(emails)
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def as_dict(self):
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value = {}
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if self.data_type == 'raw':
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value.update(self._as_dict(self.data))
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elif self.data_type == 'mailchimp':
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event = json.loads(self.data)
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value.update(self._as_dict(event['raw_msg']))
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elif self.data_type == 'mailpace':
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payload = json.loads(self.data)
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value.update(self._as_dict(payload['raw']))
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elif self.data_type == 'postmark':
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payload = json.loads(self.data)
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value.update(self._as_dict_postmark(payload))
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elif self.data_type == 'sendgrid':
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payload = json.loads(self.data)
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value.update(self._as_dict(payload['email']))
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return value
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def _as_dict(self, raw):
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value = {}
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if isinstance(raw, str):
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message = email.message_from_string(
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raw, policy=email_policy_default)
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else:
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message = email.message_from_bytes(
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raw, policy=email_policy_default)
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if 'From' in message:
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value['from'] = getaddresses([message.get('From')])[0][1]
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for key in ['To', 'Cc', 'Bcc']:
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if key in message:
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value[key.lower()] = [
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a for _, a in getaddresses(message.get_all(key))]
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if 'Subject' in message:
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value['subject'] = message['Subject']
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text = _email_text(message)
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if text is not None:
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value['text'] = text
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html = _email_text(message, 'html')
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if html is not None:
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value['html'] = html
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value['attachments'] = list(_email_attachments(message))
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value['headers'] = dict(message.items())
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return value
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def _as_dict_postmark(self, payload):
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value = {}
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if 'FromFull' in payload:
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value['from'] = payload['FromFull']['Email']
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for key in ['To', 'Cc', 'Bcc']:
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if f'{key}Full' in payload:
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value[key.lower()] = [
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a['Email'] for a in payload[f'{key}Full']]
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if 'Subject' in payload:
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value['subject'] = payload['Subject']
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if 'TextBody' in payload:
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value['text'] = payload['TextBody']
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if 'HtmlBody' in payload:
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value['html'] = payload['HtmlBody']
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if 'Attachments' in payload:
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value['attachments'] = [{
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'filename': a['Name'],
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'type': a['ContentType'],
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'data': base64.b64decode(a['Content']),
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} for a in payload['Attachments']]
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if 'Headers' in payload:
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value['headers'] = {
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h['Name']: h['Value'] for h in payload['Headers']}
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return value
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class Rule(sequence_ordered(), ModelSQL, ModelView):
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"Inbound Email Rule"
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__name__ = 'inbound.email.rule'
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inbox = fields.Many2One(
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'inbound.email.inbox', "Inbox", required=True, ondelete='CASCADE')
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origin = fields.Char(
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"Origin",
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help="A regular expression to match the sender email address.")
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destination = fields.Char(
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"Destination",
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help="A regular expression to match any receiver email addresses.")
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subject = fields.Char(
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"Subject",
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help="A regular expression to match the subject.")
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attachment_name = fields.Char(
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"Attachment Name",
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help="A regular expression to match any attachment name.")
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headers = fields.One2Many('inbound.email.rule.header', 'rule', "Headers")
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action = fields.Selection([
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(None, ""),
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], "Action")
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@classmethod
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def __setup__(cls):
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super().__setup__()
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cls.__access__.add('inbox')
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cls._order.insert(0, ('inbox.id', 'DESC'))
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def match(self, email_):
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flags = re.IGNORECASE
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search = partial(re.search, flags=flags)
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compile_ = partial(re.compile, flags=flags)
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if self.origin:
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if not search(self.origin, email_.get('from', '')):
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return False
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if self.destination:
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destinations = [
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*email_.get('to', []),
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*email_.get('cc', []),
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*email_.get('bcc', []),
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]
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pattern = compile_(self.destination)
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if not any(pattern.search(d) for d in destinations):
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return False
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if self.subject:
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if not search(self.subject, email_.get('subject', '')):
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return False
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if self.attachment_name:
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pattern = compile_(self.attachment_name)
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if not any(
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pattern.search(a.get('filename', ''))
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for a in email_.get('attachments', [])):
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return False
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if self.headers:
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for header in self.headers:
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if not search(
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header.value,
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email_.get('headers', {}).get(header.name, '')):
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return False
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return True
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def run(self, email_):
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pool = Pool()
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if self.action:
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model, method = self.action.split('|')
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Model = pool.get(model)
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email_.result = getattr(Model, method)(email_, self)
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class RuleHeader(ModelSQL, ModelView):
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"Inbound Email Rule Header"
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__name__ = 'inbound.email.rule.header'
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rule = fields.Many2One(
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'inbound.email.rule', "Rule", required=True, ondelete='CASCADE')
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name = fields.Char(
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"Name", required=True,
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help="The name of the header.")
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value = fields.Char(
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"Value",
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help="A regular expression to match the header value.")
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@classmethod
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def __setup__(cls):
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super().__setup__()
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cls.__access__.add('rule')
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