mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-12-22 03:34:57 -05:00
5d38a3c97f
* Fixes a case where no summary text was returned. * The use of messages_from_person vs. messages_from_person_and_others was tweaked to depend on whether there was 1 sender or multiple senders, not based on if there was 1 room or multiple rooms.
775 lines
26 KiB
Python
775 lines
26 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import email.mime.multipart
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import email.utils
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import logging
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import urllib.parse
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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 typing import TYPE_CHECKING, Any, Dict, Iterable, List, Optional, TypeVar
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import bleach
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import jinja2
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from synapse.api.constants import EventTypes, Membership
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from synapse.api.errors import StoreError
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from synapse.config.emailconfig import EmailSubjectConfig
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from synapse.events import EventBase
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from synapse.logging.context import make_deferred_yieldable
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from synapse.push.presentable_names import (
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calculate_room_name,
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descriptor_from_member_events,
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name_from_member_event,
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)
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from synapse.types import StateMap, UserID
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from synapse.util.async_helpers import concurrently_execute
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from synapse.visibility import filter_events_for_client
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if TYPE_CHECKING:
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from synapse.app.homeserver import HomeServer
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logger = logging.getLogger(__name__)
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T = TypeVar("T")
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CONTEXT_BEFORE = 1
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CONTEXT_AFTER = 1
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# From https://github.com/matrix-org/matrix-react-sdk/blob/master/src/HtmlUtils.js
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ALLOWED_TAGS = [
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"font", # custom to matrix for IRC-style font coloring
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"del", # for markdown
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# deliberately no h1/h2 to stop people shouting.
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"h3",
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"h4",
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"h5",
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"h6",
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"blockquote",
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"p",
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"a",
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"ul",
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"ol",
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"nl",
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"li",
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"b",
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"i",
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"u",
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"strong",
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"em",
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"strike",
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"code",
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"hr",
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"br",
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"div",
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"table",
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"thead",
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"caption",
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"tbody",
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"tr",
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"th",
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"td",
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"pre",
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]
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ALLOWED_ATTRS = {
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# custom ones first:
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"font": ["color"], # custom to matrix
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"a": ["href", "name", "target"], # remote target: custom to matrix
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# We don't currently allow img itself by default, but this
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# would make sense if we did
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"img": ["src"],
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}
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# When bleach release a version with this option, we can specify schemes
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# ALLOWED_SCHEMES = ["http", "https", "ftp", "mailto"]
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class Mailer:
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def __init__(
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self,
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hs: "HomeServer",
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app_name: str,
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template_html: jinja2.Template,
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template_text: jinja2.Template,
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):
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self.hs = hs
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self.template_html = template_html
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self.template_text = template_text
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self.sendmail = self.hs.get_sendmail()
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self.store = self.hs.get_datastore()
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self.macaroon_gen = self.hs.get_macaroon_generator()
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self.state_handler = self.hs.get_state_handler()
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self.storage = hs.get_storage()
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self.app_name = app_name
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self.email_subjects = hs.config.email_subjects # type: EmailSubjectConfig
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logger.info("Created Mailer for app_name %s" % app_name)
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async def send_password_reset_mail(
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self, email_address: str, token: str, client_secret: str, sid: str
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) -> None:
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"""Send an email with a password reset link to a user
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Args:
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email_address: Email address we're sending the password
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reset to
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token: Unique token generated by the server to verify
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the email was received
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client_secret: Unique token generated by the client to
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group together multiple email sending attempts
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sid: The generated session ID
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"""
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params = {"token": token, "client_secret": client_secret, "sid": sid}
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link = (
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self.hs.config.public_baseurl
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+ "_synapse/client/password_reset/email/submit_token?%s"
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% urllib.parse.urlencode(params)
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)
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template_vars = {"link": link}
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await self.send_email(
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email_address,
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self.email_subjects.password_reset
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% {"server_name": self.hs.config.server_name},
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template_vars,
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)
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async def send_registration_mail(
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self, email_address: str, token: str, client_secret: str, sid: str
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) -> None:
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"""Send an email with a registration confirmation link to a user
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Args:
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email_address: Email address we're sending the registration
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link to
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token: Unique token generated by the server to verify
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the email was received
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client_secret: Unique token generated by the client to
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group together multiple email sending attempts
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sid: The generated session ID
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"""
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params = {"token": token, "client_secret": client_secret, "sid": sid}
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link = (
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self.hs.config.public_baseurl
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+ "_matrix/client/unstable/registration/email/submit_token?%s"
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% urllib.parse.urlencode(params)
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)
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template_vars = {"link": link}
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await self.send_email(
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email_address,
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self.email_subjects.email_validation
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% {"server_name": self.hs.config.server_name},
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template_vars,
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)
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async def send_add_threepid_mail(
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self, email_address: str, token: str, client_secret: str, sid: str
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) -> None:
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"""Send an email with a validation link to a user for adding a 3pid to their account
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Args:
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email_address: Email address we're sending the validation link to
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token: Unique token generated by the server to verify the email was received
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client_secret: Unique token generated by the client to group together
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multiple email sending attempts
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sid: The generated session ID
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"""
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params = {"token": token, "client_secret": client_secret, "sid": sid}
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link = (
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self.hs.config.public_baseurl
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+ "_matrix/client/unstable/add_threepid/email/submit_token?%s"
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% urllib.parse.urlencode(params)
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)
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template_vars = {"link": link}
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await self.send_email(
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email_address,
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self.email_subjects.email_validation
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% {"server_name": self.hs.config.server_name},
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template_vars,
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)
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async def send_notification_mail(
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self,
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app_id: str,
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user_id: str,
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email_address: str,
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push_actions: Iterable[Dict[str, Any]],
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reason: Dict[str, Any],
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) -> None:
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"""Send email regarding a user's room notifications"""
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rooms_in_order = deduped_ordered_list([pa["room_id"] for pa in push_actions])
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notif_events = await self.store.get_events(
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[pa["event_id"] for pa in push_actions]
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)
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notifs_by_room = {} # type: Dict[str, List[Dict[str, Any]]]
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for pa in push_actions:
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notifs_by_room.setdefault(pa["room_id"], []).append(pa)
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# collect the current state for all the rooms in which we have
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# notifications
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state_by_room = {}
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try:
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user_display_name = await self.store.get_profile_displayname(
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UserID.from_string(user_id).localpart
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)
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if user_display_name is None:
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user_display_name = user_id
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except StoreError:
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user_display_name = user_id
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async def _fetch_room_state(room_id):
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room_state = await self.store.get_current_state_ids(room_id)
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state_by_room[room_id] = room_state
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# Run at most 3 of these at once: sync does 10 at a time but email
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# notifs are much less realtime than sync so we can afford to wait a bit.
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await concurrently_execute(_fetch_room_state, rooms_in_order, 3)
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# actually sort our so-called rooms_in_order list, most recent room first
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rooms_in_order.sort(key=lambda r: -(notifs_by_room[r][-1]["received_ts"] or 0))
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rooms = []
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for r in rooms_in_order:
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roomvars = await self.get_room_vars(
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r, user_id, notifs_by_room[r], notif_events, state_by_room[r]
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)
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rooms.append(roomvars)
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reason["room_name"] = await calculate_room_name(
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self.store,
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state_by_room[reason["room_id"]],
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user_id,
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fallback_to_members=True,
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)
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if len(notifs_by_room) == 1:
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# Only one room has new stuff
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room_id = list(notifs_by_room.keys())[0]
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summary_text = await self.make_summary_text_single_room(
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room_id,
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notifs_by_room[room_id],
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state_by_room[room_id],
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notif_events,
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user_id,
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)
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else:
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summary_text = await self.make_summary_text(
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notifs_by_room, state_by_room, notif_events, reason
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)
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template_vars = {
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"user_display_name": user_display_name,
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"unsubscribe_link": self.make_unsubscribe_link(
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user_id, app_id, email_address
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),
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"summary_text": summary_text,
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"rooms": rooms,
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"reason": reason,
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}
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await self.send_email(email_address, summary_text, template_vars)
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async def send_email(
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self, email_address: str, subject: str, extra_template_vars: Dict[str, Any]
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) -> None:
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"""Send an email with the given information and template text"""
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try:
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from_string = self.hs.config.email_notif_from % {"app": self.app_name}
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except TypeError:
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from_string = self.hs.config.email_notif_from
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raw_from = email.utils.parseaddr(from_string)[1]
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raw_to = email.utils.parseaddr(email_address)[1]
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if raw_to == "":
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raise RuntimeError("Invalid 'to' address")
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template_vars = {
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"app_name": self.app_name,
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"server_name": self.hs.config.server.server_name,
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}
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template_vars.update(extra_template_vars)
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html_text = self.template_html.render(**template_vars)
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html_part = MIMEText(html_text, "html", "utf8")
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plain_text = self.template_text.render(**template_vars)
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text_part = MIMEText(plain_text, "plain", "utf8")
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multipart_msg = MIMEMultipart("alternative")
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multipart_msg["Subject"] = subject
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multipart_msg["From"] = from_string
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multipart_msg["To"] = email_address
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multipart_msg["Date"] = email.utils.formatdate()
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multipart_msg["Message-ID"] = email.utils.make_msgid()
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multipart_msg.attach(text_part)
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multipart_msg.attach(html_part)
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logger.info("Sending email to %s" % email_address)
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await make_deferred_yieldable(
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self.sendmail(
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self.hs.config.email_smtp_host,
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raw_from,
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raw_to,
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multipart_msg.as_string().encode("utf8"),
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reactor=self.hs.get_reactor(),
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port=self.hs.config.email_smtp_port,
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requireAuthentication=self.hs.config.email_smtp_user is not None,
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username=self.hs.config.email_smtp_user,
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password=self.hs.config.email_smtp_pass,
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requireTransportSecurity=self.hs.config.require_transport_security,
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)
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)
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async def get_room_vars(
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self,
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room_id: str,
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user_id: str,
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notifs: Iterable[Dict[str, Any]],
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notif_events: Dict[str, EventBase],
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room_state_ids: StateMap[str],
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) -> Dict[str, Any]:
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# Check if one of the notifs is an invite event for the user.
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is_invite = False
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for n in notifs:
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ev = notif_events[n["event_id"]]
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if ev.type == EventTypes.Member and ev.state_key == user_id:
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if ev.content.get("membership") == Membership.INVITE:
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is_invite = True
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break
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room_name = await calculate_room_name(self.store, room_state_ids, user_id)
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room_vars = {
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"title": room_name,
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"hash": string_ordinal_total(room_id), # See sender avatar hash
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"notifs": [],
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"invite": is_invite,
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"link": self.make_room_link(room_id),
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} # type: Dict[str, Any]
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if not is_invite:
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for n in notifs:
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notifvars = await self.get_notif_vars(
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n, user_id, notif_events[n["event_id"]], room_state_ids
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)
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# merge overlapping notifs together.
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# relies on the notifs being in chronological order.
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merge = False
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if room_vars["notifs"] and "messages" in room_vars["notifs"][-1]:
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prev_messages = room_vars["notifs"][-1]["messages"]
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for message in notifvars["messages"]:
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pm = list(
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filter(lambda pm: pm["id"] == message["id"], prev_messages)
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)
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if pm:
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if not message["is_historical"]:
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pm[0]["is_historical"] = False
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merge = True
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elif merge:
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# we're merging, so append any remaining messages
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# in this notif to the previous one
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prev_messages.append(message)
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if not merge:
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room_vars["notifs"].append(notifvars)
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return room_vars
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async def get_notif_vars(
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self,
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notif: Dict[str, Any],
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user_id: str,
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notif_event: EventBase,
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room_state_ids: StateMap[str],
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) -> Dict[str, Any]:
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results = await self.store.get_events_around(
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notif["room_id"],
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notif["event_id"],
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before_limit=CONTEXT_BEFORE,
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after_limit=CONTEXT_AFTER,
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)
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ret = {
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"link": self.make_notif_link(notif),
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"ts": notif["received_ts"],
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"messages": [],
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}
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the_events = await filter_events_for_client(
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self.storage, user_id, results["events_before"]
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)
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the_events.append(notif_event)
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for event in the_events:
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messagevars = await self.get_message_vars(notif, event, room_state_ids)
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if messagevars is not None:
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ret["messages"].append(messagevars)
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return ret
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async def get_message_vars(
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self, notif: Dict[str, Any], event: EventBase, room_state_ids: StateMap[str]
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) -> Optional[Dict[str, Any]]:
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if event.type != EventTypes.Message and event.type != EventTypes.Encrypted:
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return None
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sender_state_event_id = room_state_ids[("m.room.member", event.sender)]
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sender_state_event = await self.store.get_event(sender_state_event_id)
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sender_name = name_from_member_event(sender_state_event)
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sender_avatar_url = sender_state_event.content.get("avatar_url")
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# 'hash' for deterministically picking default images: use
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# sender_hash % the number of default images to choose from
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sender_hash = string_ordinal_total(event.sender)
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ret = {
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"event_type": event.type,
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"is_historical": event.event_id != notif["event_id"],
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"id": event.event_id,
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"ts": event.origin_server_ts,
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"sender_name": sender_name,
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"sender_avatar_url": sender_avatar_url,
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"sender_hash": sender_hash,
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}
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# Encrypted messages don't have any additional useful information.
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if event.type == EventTypes.Encrypted:
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return ret
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msgtype = event.content.get("msgtype")
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ret["msgtype"] = msgtype
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if msgtype == "m.text":
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self.add_text_message_vars(ret, event)
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elif msgtype == "m.image":
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self.add_image_message_vars(ret, event)
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if "body" in event.content:
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ret["body_text_plain"] = event.content["body"]
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return ret
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def add_text_message_vars(
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self, messagevars: Dict[str, Any], event: EventBase
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) -> None:
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msgformat = event.content.get("format")
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messagevars["format"] = msgformat
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formatted_body = event.content.get("formatted_body")
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body = event.content.get("body")
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if msgformat == "org.matrix.custom.html" and formatted_body:
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messagevars["body_text_html"] = safe_markup(formatted_body)
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elif body:
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messagevars["body_text_html"] = safe_text(body)
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def add_image_message_vars(
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self, messagevars: Dict[str, Any], event: EventBase
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) -> None:
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"""
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Potentially add an image URL to the message variables.
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"""
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if "url" in event.content:
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messagevars["image_url"] = event.content["url"]
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async def make_summary_text_single_room(
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self,
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room_id: str,
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notifs: List[Dict[str, Any]],
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room_state_ids: StateMap[str],
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notif_events: Dict[str, EventBase],
|
|
user_id: str,
|
|
) -> str:
|
|
"""
|
|
Make a summary text for the email when only a single room has notifications.
|
|
|
|
Args:
|
|
room_id: The ID of the room.
|
|
notifs: The notifications for this room.
|
|
room_state_ids: The state map for the room.
|
|
notif_events: A map of event ID -> notification event.
|
|
user_id: The user receiving the notification.
|
|
|
|
Returns:
|
|
The summary text.
|
|
"""
|
|
# If the room has some kind of name, use it, but we don't
|
|
# want the generated-from-names one here otherwise we'll
|
|
# end up with, "new message from Bob in the Bob room"
|
|
room_name = await calculate_room_name(
|
|
self.store, room_state_ids, user_id, fallback_to_members=False
|
|
)
|
|
|
|
# See if one of the notifs is an invite event for the user
|
|
invite_event = None
|
|
for n in notifs:
|
|
ev = notif_events[n["event_id"]]
|
|
if ev.type == EventTypes.Member and ev.state_key == user_id:
|
|
if ev.content.get("membership") == Membership.INVITE:
|
|
invite_event = ev
|
|
break
|
|
|
|
if invite_event:
|
|
inviter_member_event_id = room_state_ids.get(
|
|
("m.room.member", invite_event.sender)
|
|
)
|
|
inviter_name = invite_event.sender
|
|
if inviter_member_event_id:
|
|
inviter_member_event = await self.store.get_event(
|
|
inviter_member_event_id, allow_none=True
|
|
)
|
|
if inviter_member_event:
|
|
inviter_name = name_from_member_event(inviter_member_event)
|
|
|
|
if room_name is None:
|
|
return self.email_subjects.invite_from_person % {
|
|
"person": inviter_name,
|
|
"app": self.app_name,
|
|
}
|
|
|
|
return self.email_subjects.invite_from_person_to_room % {
|
|
"person": inviter_name,
|
|
"room": room_name,
|
|
"app": self.app_name,
|
|
}
|
|
|
|
if len(notifs) == 1:
|
|
# There is just the one notification, so give some detail
|
|
sender_name = None
|
|
event = notif_events[notifs[0]["event_id"]]
|
|
if ("m.room.member", event.sender) in room_state_ids:
|
|
state_event_id = room_state_ids[("m.room.member", event.sender)]
|
|
state_event = await self.store.get_event(state_event_id)
|
|
sender_name = name_from_member_event(state_event)
|
|
|
|
if sender_name is not None and room_name is not None:
|
|
return self.email_subjects.message_from_person_in_room % {
|
|
"person": sender_name,
|
|
"room": room_name,
|
|
"app": self.app_name,
|
|
}
|
|
elif sender_name is not None:
|
|
return self.email_subjects.message_from_person % {
|
|
"person": sender_name,
|
|
"app": self.app_name,
|
|
}
|
|
|
|
# The sender is unknown, just use the room name (or ID).
|
|
return self.email_subjects.messages_in_room % {
|
|
"room": room_name or room_id,
|
|
"app": self.app_name,
|
|
}
|
|
else:
|
|
# There's more than one notification for this room, so just
|
|
# say there are several
|
|
if room_name is not None:
|
|
return self.email_subjects.messages_in_room % {
|
|
"room": room_name,
|
|
"app": self.app_name,
|
|
}
|
|
|
|
return await self.make_summary_text_from_member_events(
|
|
room_id, notifs, room_state_ids, notif_events
|
|
)
|
|
|
|
async def make_summary_text(
|
|
self,
|
|
notifs_by_room: Dict[str, List[Dict[str, Any]]],
|
|
room_state_ids: Dict[str, StateMap[str]],
|
|
notif_events: Dict[str, EventBase],
|
|
reason: Dict[str, Any],
|
|
) -> str:
|
|
"""
|
|
Make a summary text for the email when multiple rooms have notifications.
|
|
|
|
Args:
|
|
notifs_by_room: A map of room ID to the notifications for that room.
|
|
room_state_ids: A map of room ID to the state map for that room.
|
|
notif_events: A map of event ID -> notification event.
|
|
reason: The reason this notification is being sent.
|
|
|
|
Returns:
|
|
The summary text.
|
|
"""
|
|
# Stuff's happened in multiple different rooms
|
|
# ...but we still refer to the 'reason' room which triggered the mail
|
|
if reason["room_name"] is not None:
|
|
return self.email_subjects.messages_in_room_and_others % {
|
|
"room": reason["room_name"],
|
|
"app": self.app_name,
|
|
}
|
|
|
|
room_id = reason["room_id"]
|
|
return await self.make_summary_text_from_member_events(
|
|
room_id, notifs_by_room[room_id], room_state_ids[room_id], notif_events
|
|
)
|
|
|
|
async def make_summary_text_from_member_events(
|
|
self,
|
|
room_id: str,
|
|
notifs: List[Dict[str, Any]],
|
|
room_state_ids: StateMap[str],
|
|
notif_events: Dict[str, EventBase],
|
|
) -> str:
|
|
"""
|
|
Make a summary text for the email when only a single room has notifications.
|
|
|
|
Args:
|
|
room_id: The ID of the room.
|
|
notifs: The notifications for this room.
|
|
room_state_ids: The state map for the room.
|
|
notif_events: A map of event ID -> notification event.
|
|
|
|
Returns:
|
|
The summary text.
|
|
"""
|
|
# If the room doesn't have a name, say who the messages
|
|
# are from explicitly to avoid, "messages in the Bob room"
|
|
sender_ids = {notif_events[n["event_id"]].sender for n in notifs}
|
|
|
|
member_events = await self.store.get_events(
|
|
[room_state_ids[("m.room.member", s)] for s in sender_ids]
|
|
)
|
|
|
|
# There was a single sender.
|
|
if len(sender_ids) == 1:
|
|
return self.email_subjects.messages_from_person % {
|
|
"person": descriptor_from_member_events(member_events.values()),
|
|
"app": self.app_name,
|
|
}
|
|
|
|
# There was more than one sender, use the first one and a tweaked template.
|
|
return self.email_subjects.messages_from_person_and_others % {
|
|
"person": descriptor_from_member_events(list(member_events.values())[:1]),
|
|
"app": self.app_name,
|
|
}
|
|
|
|
def make_room_link(self, room_id: str) -> str:
|
|
if self.hs.config.email_riot_base_url:
|
|
base_url = "%s/#/room" % (self.hs.config.email_riot_base_url)
|
|
elif self.app_name == "Vector":
|
|
# need /beta for Universal Links to work on iOS
|
|
base_url = "https://vector.im/beta/#/room"
|
|
else:
|
|
base_url = "https://matrix.to/#"
|
|
return "%s/%s" % (base_url, room_id)
|
|
|
|
def make_notif_link(self, notif: Dict[str, str]) -> str:
|
|
if self.hs.config.email_riot_base_url:
|
|
return "%s/#/room/%s/%s" % (
|
|
self.hs.config.email_riot_base_url,
|
|
notif["room_id"],
|
|
notif["event_id"],
|
|
)
|
|
elif self.app_name == "Vector":
|
|
# need /beta for Universal Links to work on iOS
|
|
return "https://vector.im/beta/#/room/%s/%s" % (
|
|
notif["room_id"],
|
|
notif["event_id"],
|
|
)
|
|
else:
|
|
return "https://matrix.to/#/%s/%s" % (notif["room_id"], notif["event_id"])
|
|
|
|
def make_unsubscribe_link(
|
|
self, user_id: str, app_id: str, email_address: str
|
|
) -> str:
|
|
params = {
|
|
"access_token": self.macaroon_gen.generate_delete_pusher_token(user_id),
|
|
"app_id": app_id,
|
|
"pushkey": email_address,
|
|
}
|
|
|
|
# XXX: make r0 once API is stable
|
|
return "%s_matrix/client/unstable/pushers/remove?%s" % (
|
|
self.hs.config.public_baseurl,
|
|
urllib.parse.urlencode(params),
|
|
)
|
|
|
|
|
|
def safe_markup(raw_html: str) -> jinja2.Markup:
|
|
"""
|
|
Sanitise a raw HTML string to a set of allowed tags and attributes, and linkify any bare URLs.
|
|
|
|
Args
|
|
raw_html: Unsafe HTML.
|
|
|
|
Returns:
|
|
A Markup object ready to safely use in a Jinja template.
|
|
"""
|
|
return jinja2.Markup(
|
|
bleach.linkify(
|
|
bleach.clean(
|
|
raw_html,
|
|
tags=ALLOWED_TAGS,
|
|
attributes=ALLOWED_ATTRS,
|
|
# bleach master has this, but it isn't released yet
|
|
# protocols=ALLOWED_SCHEMES,
|
|
strip=True,
|
|
)
|
|
)
|
|
)
|
|
|
|
|
|
def safe_text(raw_text: str) -> jinja2.Markup:
|
|
"""
|
|
Sanitise text (escape any HTML tags), and then linkify any bare URLs.
|
|
|
|
Args
|
|
raw_text: Unsafe text which might include HTML markup.
|
|
|
|
Returns:
|
|
A Markup object ready to safely use in a Jinja template.
|
|
"""
|
|
return jinja2.Markup(
|
|
bleach.linkify(bleach.clean(raw_text, tags=[], attributes={}, strip=False))
|
|
)
|
|
|
|
|
|
def deduped_ordered_list(it: Iterable[T]) -> List[T]:
|
|
seen = set()
|
|
ret = []
|
|
for item in it:
|
|
if item not in seen:
|
|
seen.add(item)
|
|
ret.append(item)
|
|
return ret
|
|
|
|
|
|
def string_ordinal_total(s: str) -> int:
|
|
tot = 0
|
|
for c in s:
|
|
tot += ord(c)
|
|
return tot
|