413 lines
17 KiB
Python
413 lines
17 KiB
Python
# -*- coding: utf-8 -*-
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# 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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from __future__ import print_function
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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 os
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from enum import Enum
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import pkg_resources
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from ._base import Config, ConfigError
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class EmailConfig(Config):
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section = "email"
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def read_config(self, config, **kwargs):
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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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self.email_smtp_host = email_config.get("smtp_host", None)
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self.email_smtp_port = email_config.get("smtp_port", None)
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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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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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template_dir = email_config.get("template_dir")
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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 auxilliary templates like mail.css we will need).
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# (Note that loading as package_resources with jinja.PackageLoader doesn't
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# work for the same reason.)
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if not template_dir:
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template_dir = pkg_resources.resource_filename("synapse", "res/templates")
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self.email_template_dir = os.path.abspath(template_dir)
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self.email_enable_notifs = email_config.get("enable_notifs", False)
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account_validity_renewal_enabled = config.get("account_validity", {}).get(
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"renew_at"
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)
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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.account_threepid_delegate_email
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else ThreepidBehaviour.LOCAL
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)
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# Prior to Synapse v1.4.0, there was another option that defined whether Synapse would
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# use an identity server to password reset tokens on its behalf. We now warn the user
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# if they have this set and tell them to use the updated option, while using a default
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# identity server in the process.
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self.using_identity_server_from_trusted_list = False
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if (
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not self.account_threepid_delegate_email
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and config.get("trust_identity_server_for_password_resets", False) is True
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):
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# Use the first entry in self.trusted_third_party_id_servers instead
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if self.trusted_third_party_id_servers:
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# XXX: It's a little confusing that account_threepid_delegate_email is modified
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# both in RegistrationConfig and here. We should factor this bit out
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self.account_threepid_delegate_email = self.trusted_third_party_id_servers[
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0
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]
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self.using_identity_server_from_trusted_list = True
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else:
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raise ConfigError(
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"Attempted to use an identity server from"
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'"trusted_third_party_id_servers" but it is empty.'
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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 (
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self.email_enable_notifs
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or account_validity_renewal_enabled
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or self.threepid_behaviour_email == ThreepidBehaviour.LOCAL
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):
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# make sure we can import the required deps
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import jinja2
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import bleach
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# prevent unused warnings
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jinja2
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bleach
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if self.threepid_behaviour_email == ThreepidBehaviour.LOCAL:
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required = ["smtp_host", "smtp_port", "notif_from"]
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missing = []
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for k in required:
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if k not in email_config:
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missing.append("email." + k)
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# public_baseurl is required to build password reset and validation links that
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# will be emailed to users
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if config.get("public_baseurl") is None:
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missing.append("public_baseurl")
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if len(missing) > 0:
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raise RuntimeError(
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"Password resets emails are configured to be sent from "
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"this homeserver due to a partial 'email' block. "
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"However, the following required keys are missing: %s"
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% (", ".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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self.email_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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self.email_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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self.email_registration_template_html = email_config.get(
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"registration_template_html", "registration.html"
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)
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self.email_registration_template_text = email_config.get(
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"registration_template_text", "registration.txt"
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)
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self.email_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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self.email_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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self.email_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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self.email_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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self.email_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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email_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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email_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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email_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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# Check templates exist
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for f in [
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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_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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email_password_reset_template_success_html,
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email_registration_template_success_html,
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email_add_threepid_template_success_html,
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]:
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p = os.path.join(self.email_template_dir, f)
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if not os.path.isfile(p):
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raise ConfigError("Unable to find template file %s" % (p,))
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# Retrieve content of web templates
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filepath = os.path.join(
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self.email_template_dir, email_password_reset_template_success_html
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)
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self.email_password_reset_template_success_html = self.read_file(
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filepath, "email.password_reset_template_success_html"
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)
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filepath = os.path.join(
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self.email_template_dir, email_registration_template_success_html
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)
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self.email_registration_template_success_html_content = self.read_file(
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filepath, "email.registration_template_success_html"
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)
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filepath = os.path.join(
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self.email_template_dir, email_add_threepid_template_success_html
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)
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self.email_add_threepid_template_success_html_content = self.read_file(
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filepath, "email.add_threepid_template_success_html"
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)
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if self.email_enable_notifs:
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required = [
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"smtp_host",
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"smtp_port",
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"notif_from",
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"notif_template_html",
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"notif_template_text",
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]
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missing = []
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for k in required:
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if k not in email_config:
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missing.append(k)
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if len(missing) > 0:
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raise RuntimeError(
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"email.enable_notifs is True but required keys are missing: %s"
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% (", ".join(["email." + k for k in missing]),)
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)
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if config.get("public_baseurl") is None:
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raise RuntimeError(
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"email.enable_notifs is True but no public_baseurl is set"
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)
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self.email_notif_template_html = email_config["notif_template_html"]
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self.email_notif_template_text = email_config["notif_template_text"]
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for f in self.email_notif_template_text, self.email_notif_template_html:
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p = os.path.join(self.email_template_dir, f)
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if not os.path.isfile(p):
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raise ConfigError("Unable to find email template file %s" % (p,))
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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("riot_base_url", None)
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if account_validity_renewal_enabled:
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self.email_expiry_template_html = email_config.get(
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"expiry_template_html", "notice_expiry.html"
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)
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self.email_expiry_template_text = email_config.get(
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"expiry_template_text", "notice_expiry.txt"
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)
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for f in self.email_expiry_template_text, self.email_expiry_template_html:
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p = os.path.join(self.email_template_dir, f)
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if not os.path.isfile(p):
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raise ConfigError("Unable to find email template file %s" % (p,))
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def generate_config_section(self, config_dir_path, server_name, **kwargs):
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return """
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# Enable sending emails for password resets, notification events or
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# account expiry notices
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#
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# If your SMTP server requires authentication, the optional smtp_user &
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# smtp_pass variables should be used
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#
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#email:
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# enable_notifs: false
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# smtp_host: "localhost"
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# smtp_port: 25 # SSL: 465, STARTTLS: 587
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# smtp_user: "exampleusername"
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# smtp_pass: "examplepassword"
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# require_transport_security: false
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#
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# # notif_from defines the "From" address to use when sending emails.
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# # It must be set if email sending is enabled.
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# #
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# # The placeholder '%(app)s' will be replaced by the application name,
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# # which is normally 'app_name' (below), but may be overridden by the
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# # Matrix client application.
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# #
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# # Note that the placeholder must be written '%(app)s', including the
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# # trailing 's'.
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# #
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# notif_from: "Your Friendly %(app)s homeserver <noreply@example.com>"
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#
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# # app_name defines the default value for '%(app)s' in notif_from. It
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# # defaults to 'Matrix'.
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# #
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# #app_name: my_branded_matrix_server
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#
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# # Enable email notifications by default
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# #
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# notif_for_new_users: true
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#
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# # Defining a custom URL for Riot is only needed if email notifications
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# # should contain links to a self-hosted installation of Riot; when set
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# # the "app_name" setting is ignored
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# #
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# riot_base_url: "http://localhost/riot"
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#
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# # Configure the time that a validation email or text message code
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# # will expire after sending
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# #
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# # This is currently used for password resets
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# #
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# #validation_token_lifetime: 1h
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#
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# # Template directory. All template files should be stored within this
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# # directory. If not set, default templates from within the Synapse
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# # package will be used
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# #
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# # For the list of default templates, please see
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# # https://github.com/matrix-org/synapse/tree/master/synapse/res/templates
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# #
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# #template_dir: res/templates
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#
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# # Templates for email notifications
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# #
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# notif_template_html: notif_mail.html
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# notif_template_text: notif_mail.txt
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#
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# # Templates for account expiry notices
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# #
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# expiry_template_html: notice_expiry.html
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# expiry_template_text: notice_expiry.txt
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#
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# # Templates for password reset emails sent by the homeserver
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# #
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# #password_reset_template_html: password_reset.html
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# #password_reset_template_text: password_reset.txt
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#
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# # Templates for registration emails sent by the homeserver
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# #
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# #registration_template_html: registration.html
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# #registration_template_text: registration.txt
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#
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# # Templates for validation emails sent by the homeserver when adding an email to
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# # your user account
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# #
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# #add_threepid_template_html: add_threepid.html
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# #add_threepid_template_text: add_threepid.txt
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#
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# # Templates for password reset success and failure pages that a user
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# # will see after attempting to reset their password
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# #
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# #password_reset_template_success_html: password_reset_success.html
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# #password_reset_template_failure_html: password_reset_failure.html
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#
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# # Templates for registration success and failure pages that a user
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# # will see after attempting to register using an email or phone
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# #
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# #registration_template_success_html: registration_success.html
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# #registration_template_failure_html: registration_failure.html
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#
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# # Templates for success and failure pages that a user will see after attempting
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# # to add an email or phone to their account
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# #
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# #add_threepid_success_html: add_threepid_success.html
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# #add_threepid_failure_html: add_threepid_failure.html
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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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