378 lines
16 KiB
Python
378 lines
16 KiB
Python
# Copyright 2015-2016 OpenMarket Ltd
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# Copyright 2017-2018 New Vector Ltd
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# Copyright 2019 The Matrix.org Foundation C.I.C.
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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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# This file can't be called email.py because if it is, we cannot:
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import email.utils
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import logging
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import os
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from enum import Enum
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from typing import Any
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import attr
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from synapse.types import JsonDict
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from ._base import Config, ConfigError
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logger = logging.getLogger(__name__)
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MISSING_PASSWORD_RESET_CONFIG_ERROR = """\
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Password reset emails are enabled on this homeserver due to a partial
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'email' block. However, the following required keys are missing:
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%s
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"""
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DEFAULT_SUBJECTS = {
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"message_from_person_in_room": "[%(app)s] You have a message on %(app)s from %(person)s in the %(room)s room...",
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"message_from_person": "[%(app)s] You have a message on %(app)s from %(person)s...",
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"messages_from_person": "[%(app)s] You have messages on %(app)s from %(person)s...",
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"messages_in_room": "[%(app)s] You have messages on %(app)s in the %(room)s room...",
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"messages_in_room_and_others": "[%(app)s] You have messages on %(app)s in the %(room)s room and others...",
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"messages_from_person_and_others": "[%(app)s] You have messages on %(app)s from %(person)s and others...",
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"invite_from_person": "[%(app)s] %(person)s has invited you to chat on %(app)s...",
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"invite_from_person_to_room": "[%(app)s] %(person)s has invited you to join the %(room)s room on %(app)s...",
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"invite_from_person_to_space": "[%(app)s] %(person)s has invited you to join the %(space)s space on %(app)s...",
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"password_reset": "[%(server_name)s] Password reset",
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"email_validation": "[%(server_name)s] Validate your email",
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}
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LEGACY_TEMPLATE_DIR_WARNING = """
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This server's configuration file is using the deprecated 'template_dir' setting in the
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'email' section. Support for this setting has been deprecated and will be removed in a
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future version of Synapse. Server admins should instead use the new
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'custom_templates_directory' setting documented here:
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https://matrix-org.github.io/synapse/latest/templates.html
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---------------------------------------------------------------------------------------"""
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@attr.s(slots=True, frozen=True, auto_attribs=True)
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class EmailSubjectConfig:
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message_from_person_in_room: str
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message_from_person: str
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messages_from_person: str
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messages_in_room: str
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messages_in_room_and_others: str
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messages_from_person_and_others: str
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invite_from_person: str
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invite_from_person_to_room: str
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invite_from_person_to_space: str
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password_reset: str
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email_validation: str
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class EmailConfig(Config):
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section = "email"
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def read_config(self, config: JsonDict, **kwargs: Any) -> None:
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# TODO: We should separate better the email configuration from the notification
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# and account validity config.
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self.email_enable_notifs = False
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email_config = config.get("email")
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if email_config is None:
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email_config = {}
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self.force_tls = email_config.get("force_tls", False)
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self.email_smtp_host = email_config.get("smtp_host", "localhost")
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self.email_smtp_port = email_config.get(
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"smtp_port", 465 if self.force_tls else 25
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)
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self.email_smtp_user = email_config.get("smtp_user", None)
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self.email_smtp_pass = email_config.get("smtp_pass", None)
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self.require_transport_security = email_config.get(
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"require_transport_security", False
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)
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self.enable_smtp_tls = email_config.get("enable_tls", True)
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if self.force_tls and not self.enable_smtp_tls:
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raise ConfigError("email.force_tls requires email.enable_tls to be true")
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if self.require_transport_security and not self.enable_smtp_tls:
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raise ConfigError(
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"email.require_transport_security requires email.enable_tls to be true"
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)
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if "app_name" in email_config:
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self.email_app_name = email_config["app_name"]
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else:
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self.email_app_name = "Matrix"
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# TODO: Rename notif_from to something more generic, or have a separate
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# from for password resets, message notifications, etc?
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# Currently the email section is a bit bogged down with settings for
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# multiple functions. Would be good to split it out into separate
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# sections and only put the common ones under email:
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self.email_notif_from = email_config.get("notif_from", None)
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if self.email_notif_from is not None:
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# make sure it's valid
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parsed = email.utils.parseaddr(self.email_notif_from)
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if parsed[1] == "":
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raise RuntimeError("Invalid notif_from address")
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# A user-configurable template directory
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template_dir = email_config.get("template_dir")
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if template_dir is not None:
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logger.warning(LEGACY_TEMPLATE_DIR_WARNING)
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if isinstance(template_dir, str):
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# We need an absolute path, because we change directory after starting (and
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# we don't yet know what auxiliary templates like mail.css we will need).
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template_dir = os.path.abspath(template_dir)
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elif template_dir is not None:
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# If template_dir is something other than a str or None, warn the user
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raise ConfigError("Config option email.template_dir must be type str")
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self.email_enable_notifs = email_config.get("enable_notifs", False)
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self.threepid_behaviour_email = (
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# Have Synapse handle the email sending if account_threepid_delegates.email
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# is not defined
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# msisdn is currently always remote while Synapse does not support any method of
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# sending SMS messages
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ThreepidBehaviour.REMOTE
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if self.root.registration.account_threepid_delegate_email
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else ThreepidBehaviour.LOCAL
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)
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if config.get("trust_identity_server_for_password_resets"):
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raise ConfigError(
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'The config option "trust_identity_server_for_password_resets" has been removed.'
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"Please consult the configuration manual at docs/usage/configuration/config_documentation.md for "
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"details and update your config file."
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)
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self.local_threepid_handling_disabled_due_to_email_config = False
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if (
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self.threepid_behaviour_email == ThreepidBehaviour.LOCAL
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and email_config == {}
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):
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# We cannot warn the user this has happened here
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# Instead do so when a user attempts to reset their password
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self.local_threepid_handling_disabled_due_to_email_config = True
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self.threepid_behaviour_email = ThreepidBehaviour.OFF
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# Get lifetime of a validation token in milliseconds
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self.email_validation_token_lifetime = self.parse_duration(
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email_config.get("validation_token_lifetime", "1h")
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)
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if self.threepid_behaviour_email == ThreepidBehaviour.LOCAL:
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missing = []
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if not self.email_notif_from:
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missing.append("email.notif_from")
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if missing:
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raise ConfigError(
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MISSING_PASSWORD_RESET_CONFIG_ERROR % (", ".join(missing),)
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)
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# These email templates have placeholders in them, and thus must be
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# parsed using a templating engine during a request
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password_reset_template_html = email_config.get(
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"password_reset_template_html", "password_reset.html"
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)
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password_reset_template_text = email_config.get(
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"password_reset_template_text", "password_reset.txt"
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)
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registration_template_html = email_config.get(
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"registration_template_html", "registration.html"
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)
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registration_template_text = email_config.get(
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"registration_template_text", "registration.txt"
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)
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add_threepid_template_html = email_config.get(
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"add_threepid_template_html", "add_threepid.html"
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)
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add_threepid_template_text = email_config.get(
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"add_threepid_template_text", "add_threepid.txt"
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)
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password_reset_template_failure_html = email_config.get(
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"password_reset_template_failure_html", "password_reset_failure.html"
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)
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registration_template_failure_html = email_config.get(
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"registration_template_failure_html", "registration_failure.html"
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)
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add_threepid_template_failure_html = email_config.get(
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"add_threepid_template_failure_html", "add_threepid_failure.html"
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)
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# These templates do not support any placeholder variables, so we
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# will read them from disk once during setup
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password_reset_template_success_html = email_config.get(
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"password_reset_template_success_html", "password_reset_success.html"
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)
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registration_template_success_html = email_config.get(
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"registration_template_success_html", "registration_success.html"
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)
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add_threepid_template_success_html = email_config.get(
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"add_threepid_template_success_html", "add_threepid_success.html"
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)
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# Read all templates from disk
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(
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self.email_password_reset_template_html,
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self.email_password_reset_template_text,
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self.email_registration_template_html,
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self.email_registration_template_text,
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self.email_add_threepid_template_html,
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self.email_add_threepid_template_text,
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self.email_password_reset_template_confirmation_html,
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self.email_password_reset_template_failure_html,
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self.email_registration_template_failure_html,
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self.email_add_threepid_template_failure_html,
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password_reset_template_success_html_template,
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registration_template_success_html_template,
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add_threepid_template_success_html_template,
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) = self.read_templates(
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[
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password_reset_template_html,
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password_reset_template_text,
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registration_template_html,
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registration_template_text,
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add_threepid_template_html,
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add_threepid_template_text,
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"password_reset_confirmation.html",
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password_reset_template_failure_html,
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registration_template_failure_html,
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add_threepid_template_failure_html,
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password_reset_template_success_html,
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registration_template_success_html,
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add_threepid_template_success_html,
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],
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(
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td
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for td in (
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self.root.server.custom_template_directory,
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template_dir,
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)
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if td
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), # Filter out template_dir if not provided
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)
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# Render templates that do not contain any placeholders
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self.email_password_reset_template_success_html_content = (
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password_reset_template_success_html_template.render()
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)
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self.email_registration_template_success_html_content = (
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registration_template_success_html_template.render()
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)
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self.email_add_threepid_template_success_html_content = (
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add_threepid_template_success_html_template.render()
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)
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if self.email_enable_notifs:
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missing = []
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if not self.email_notif_from:
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missing.append("email.notif_from")
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if missing:
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raise ConfigError(
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"email.enable_notifs is True but required keys are missing: %s"
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% (", ".join(missing),)
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)
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notif_template_html = email_config.get(
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"notif_template_html", "notif_mail.html"
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)
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notif_template_text = email_config.get(
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"notif_template_text", "notif_mail.txt"
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)
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(
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self.email_notif_template_html,
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self.email_notif_template_text,
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) = self.read_templates(
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[notif_template_html, notif_template_text],
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(
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td
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for td in (
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self.root.server.custom_template_directory,
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template_dir,
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)
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if td
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), # Filter out template_dir if not provided
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)
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self.email_notif_for_new_users = email_config.get(
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"notif_for_new_users", True
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)
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self.email_riot_base_url = email_config.get(
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"client_base_url", email_config.get("riot_base_url", None)
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)
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if self.root.account_validity.account_validity_renew_by_email_enabled:
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expiry_template_html = email_config.get(
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"expiry_template_html", "notice_expiry.html"
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)
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expiry_template_text = email_config.get(
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"expiry_template_text", "notice_expiry.txt"
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)
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(
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self.account_validity_template_html,
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self.account_validity_template_text,
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) = self.read_templates(
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[expiry_template_html, expiry_template_text],
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(
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td
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for td in (
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self.root.server.custom_template_directory,
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template_dir,
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)
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if td
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), # Filter out template_dir if not provided
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)
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subjects_config = email_config.get("subjects", {})
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subjects = {}
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for key, default in DEFAULT_SUBJECTS.items():
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subjects[key] = subjects_config.get(key, default)
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self.email_subjects = EmailSubjectConfig(**subjects)
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# The invite client location should be a HTTP(S) URL or None.
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self.invite_client_location = email_config.get("invite_client_location") or None
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if self.invite_client_location:
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if not isinstance(self.invite_client_location, str):
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raise ConfigError(
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"Config option email.invite_client_location must be type str"
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)
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if not (
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self.invite_client_location.startswith("http://")
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or self.invite_client_location.startswith("https://")
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):
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raise ConfigError(
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"Config option email.invite_client_location must be a http or https URL",
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path=("email", "invite_client_location"),
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)
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class ThreepidBehaviour(Enum):
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"""
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Enum to define the behaviour of Synapse with regards to when it contacts an identity
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server for 3pid registration and password resets
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REMOTE = use an external server to send tokens
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LOCAL = send tokens ourselves
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OFF = disable registration via 3pid and password resets
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"""
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REMOTE = "remote"
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LOCAL = "local"
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OFF = "off"
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