MatrixSynapse/synapse/config/emailconfig.py

414 lines
18 KiB
Python

# -*- coding: utf-8 -*-
# Copyright 2015-2016 OpenMarket Ltd
# Copyright 2017-2018 New Vector Ltd
# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import print_function
# This file can't be called email.py because if it is, we cannot:
import email.utils
import os
from enum import Enum
from typing import Optional
import pkg_resources
from ._base import Config, ConfigError
class EmailConfig(Config):
section = "email"
def read_config(self, config, **kwargs):
# TODO: We should separate better the email configuration from the notification
# and account validity config.
self.email_enable_notifs = False
email_config = config.get("email", {})
self.email_smtp_host = email_config.get("smtp_host", None)
self.email_smtp_port = email_config.get("smtp_port", None)
self.email_smtp_user = email_config.get("smtp_user", None)
self.email_smtp_pass = email_config.get("smtp_pass", None)
self.require_transport_security = email_config.get(
"require_transport_security", False
)
if "app_name" in email_config:
self.email_app_name = email_config["app_name"]
else:
self.email_app_name = "Matrix"
# TODO: Rename notif_from to something more generic, or have a separate
# from for password resets, message notifications, etc?
# Currently the email section is a bit bogged down with settings for
# multiple functions. Would be good to split it out into separate
# sections and only put the common ones under email:
self.email_notif_from = email_config.get("notif_from", None)
if self.email_notif_from is not None:
# make sure it's valid
parsed = email.utils.parseaddr(self.email_notif_from)
if parsed[1] == "":
raise RuntimeError("Invalid notif_from address")
template_dir = email_config.get("template_dir")
# we need an absolute path, because we change directory after starting (and
# we don't yet know what auxilliary templates like mail.css we will need).
# (Note that loading as package_resources with jinja.PackageLoader doesn't
# work for the same reason.)
if not template_dir:
template_dir = pkg_resources.resource_filename("synapse", "res/templates")
self.email_template_dir = os.path.abspath(template_dir)
self.email_enable_notifs = email_config.get("enable_notifs", False)
account_validity_renewal_enabled = config.get("account_validity", {}).get(
"renew_at"
)
self.threepid_behaviour_email = (
# Have Synapse handle the email sending if account_threepid_delegates.email
# is not defined
# msisdn is currently always remote while Synapse does not support any method of
# sending SMS messages
ThreepidBehaviour.REMOTE
if self.account_threepid_delegate_email
else ThreepidBehaviour.LOCAL
)
# Prior to Synapse v1.4.0, there was another option that defined whether Synapse would
# use an identity server to password reset tokens on its behalf. We now warn the user
# if they have this set and tell them to use the updated option, while using a default
# identity server in the process.
self.using_identity_server_from_trusted_list = False
if (
not self.account_threepid_delegate_email
and config.get("trust_identity_server_for_password_resets", False) is True
):
# Use the first entry in self.trusted_third_party_id_servers instead
if self.trusted_third_party_id_servers:
# XXX: It's a little confusing that account_threepid_delegate_email is modified
# both in RegistrationConfig and here. We should factor this bit out
self.account_threepid_delegate_email = self.trusted_third_party_id_servers[
0
] # type: Optional[str]
self.using_identity_server_from_trusted_list = True
else:
raise ConfigError(
"Attempted to use an identity server from"
'"trusted_third_party_id_servers" but it is empty.'
)
self.local_threepid_handling_disabled_due_to_email_config = False
if (
self.threepid_behaviour_email == ThreepidBehaviour.LOCAL
and email_config == {}
):
# We cannot warn the user this has happened here
# Instead do so when a user attempts to reset their password
self.local_threepid_handling_disabled_due_to_email_config = True
self.threepid_behaviour_email = ThreepidBehaviour.OFF
# Get lifetime of a validation token in milliseconds
self.email_validation_token_lifetime = self.parse_duration(
email_config.get("validation_token_lifetime", "1h")
)
if (
self.email_enable_notifs
or account_validity_renewal_enabled
or self.threepid_behaviour_email == ThreepidBehaviour.LOCAL
):
# make sure we can import the required deps
import jinja2
import bleach
# prevent unused warnings
jinja2
bleach
if self.threepid_behaviour_email == ThreepidBehaviour.LOCAL:
required = ["smtp_host", "smtp_port", "notif_from"]
missing = []
for k in required:
if k not in email_config:
missing.append("email." + k)
# public_baseurl is required to build password reset and validation links that
# will be emailed to users
if config.get("public_baseurl") is None:
missing.append("public_baseurl")
if len(missing) > 0:
raise RuntimeError(
"Password resets emails are configured to be sent from "
"this homeserver due to a partial 'email' block. "
"However, the following required keys are missing: %s"
% (", ".join(missing),)
)
# These email templates have placeholders in them, and thus must be
# parsed using a templating engine during a request
self.email_password_reset_template_html = email_config.get(
"password_reset_template_html", "password_reset.html"
)
self.email_password_reset_template_text = email_config.get(
"password_reset_template_text", "password_reset.txt"
)
self.email_registration_template_html = email_config.get(
"registration_template_html", "registration.html"
)
self.email_registration_template_text = email_config.get(
"registration_template_text", "registration.txt"
)
self.email_add_threepid_template_html = email_config.get(
"add_threepid_template_html", "add_threepid.html"
)
self.email_add_threepid_template_text = email_config.get(
"add_threepid_template_text", "add_threepid.txt"
)
self.email_password_reset_template_failure_html = email_config.get(
"password_reset_template_failure_html", "password_reset_failure.html"
)
self.email_registration_template_failure_html = email_config.get(
"registration_template_failure_html", "registration_failure.html"
)
self.email_add_threepid_template_failure_html = email_config.get(
"add_threepid_template_failure_html", "add_threepid_failure.html"
)
# These templates do not support any placeholder variables, so we
# will read them from disk once during setup
email_password_reset_template_success_html = email_config.get(
"password_reset_template_success_html", "password_reset_success.html"
)
email_registration_template_success_html = email_config.get(
"registration_template_success_html", "registration_success.html"
)
email_add_threepid_template_success_html = email_config.get(
"add_threepid_template_success_html", "add_threepid_success.html"
)
# Check templates exist
for f in [
self.email_password_reset_template_html,
self.email_password_reset_template_text,
self.email_registration_template_html,
self.email_registration_template_text,
self.email_add_threepid_template_html,
self.email_add_threepid_template_text,
self.email_password_reset_template_failure_html,
self.email_registration_template_failure_html,
self.email_add_threepid_template_failure_html,
email_password_reset_template_success_html,
email_registration_template_success_html,
email_add_threepid_template_success_html,
]:
p = os.path.join(self.email_template_dir, f)
if not os.path.isfile(p):
raise ConfigError("Unable to find template file %s" % (p,))
# Retrieve content of web templates
filepath = os.path.join(
self.email_template_dir, email_password_reset_template_success_html
)
self.email_password_reset_template_success_html = self.read_file(
filepath, "email.password_reset_template_success_html"
)
filepath = os.path.join(
self.email_template_dir, email_registration_template_success_html
)
self.email_registration_template_success_html_content = self.read_file(
filepath, "email.registration_template_success_html"
)
filepath = os.path.join(
self.email_template_dir, email_add_threepid_template_success_html
)
self.email_add_threepid_template_success_html_content = self.read_file(
filepath, "email.add_threepid_template_success_html"
)
if self.email_enable_notifs:
required = [
"smtp_host",
"smtp_port",
"notif_from",
"notif_template_html",
"notif_template_text",
]
missing = []
for k in required:
if k not in email_config:
missing.append(k)
if len(missing) > 0:
raise RuntimeError(
"email.enable_notifs is True but required keys are missing: %s"
% (", ".join(["email." + k for k in missing]),)
)
if config.get("public_baseurl") is None:
raise RuntimeError(
"email.enable_notifs is True but no public_baseurl is set"
)
self.email_notif_template_html = email_config["notif_template_html"]
self.email_notif_template_text = email_config["notif_template_text"]
for f in self.email_notif_template_text, self.email_notif_template_html:
p = os.path.join(self.email_template_dir, f)
if not os.path.isfile(p):
raise ConfigError("Unable to find email template file %s" % (p,))
self.email_notif_for_new_users = email_config.get(
"notif_for_new_users", True
)
self.email_riot_base_url = email_config.get("riot_base_url", None)
if account_validity_renewal_enabled:
self.email_expiry_template_html = email_config.get(
"expiry_template_html", "notice_expiry.html"
)
self.email_expiry_template_text = email_config.get(
"expiry_template_text", "notice_expiry.txt"
)
for f in self.email_expiry_template_text, self.email_expiry_template_html:
p = os.path.join(self.email_template_dir, f)
if not os.path.isfile(p):
raise ConfigError("Unable to find email template file %s" % (p,))
def generate_config_section(self, config_dir_path, server_name, **kwargs):
return """
# Enable sending emails for password resets, notification events or
# account expiry notices
#
# If your SMTP server requires authentication, the optional smtp_user &
# smtp_pass variables should be used
#
#email:
# enable_notifs: false
# smtp_host: "localhost"
# smtp_port: 25 # SSL: 465, STARTTLS: 587
# smtp_user: "exampleusername"
# smtp_pass: "examplepassword"
# require_transport_security: false
#
# # notif_from defines the "From" address to use when sending emails.
# # It must be set if email sending is enabled.
# #
# # The placeholder '%(app)s' will be replaced by the application name,
# # which is normally 'app_name' (below), but may be overridden by the
# # Matrix client application.
# #
# # Note that the placeholder must be written '%(app)s', including the
# # trailing 's'.
# #
# notif_from: "Your Friendly %(app)s homeserver <noreply@example.com>"
#
# # app_name defines the default value for '%(app)s' in notif_from. It
# # defaults to 'Matrix'.
# #
# #app_name: my_branded_matrix_server
#
# # Enable email notifications by default
# #
# notif_for_new_users: true
#
# # Defining a custom URL for Riot is only needed if email notifications
# # should contain links to a self-hosted installation of Riot; when set
# # the "app_name" setting is ignored
# #
# riot_base_url: "http://localhost/riot"
#
# # Configure the time that a validation email or text message code
# # will expire after sending
# #
# # This is currently used for password resets
# #
# #validation_token_lifetime: 1h
#
# # Template directory. All template files should be stored within this
# # directory. If not set, default templates from within the Synapse
# # package will be used
# #
# # For the list of default templates, please see
# # https://github.com/matrix-org/synapse/tree/master/synapse/res/templates
# #
# #template_dir: res/templates
#
# # Templates for email notifications
# #
# notif_template_html: notif_mail.html
# notif_template_text: notif_mail.txt
#
# # Templates for account expiry notices
# #
# expiry_template_html: notice_expiry.html
# expiry_template_text: notice_expiry.txt
#
# # Templates for password reset emails sent by the homeserver
# #
# #password_reset_template_html: password_reset.html
# #password_reset_template_text: password_reset.txt
#
# # Templates for registration emails sent by the homeserver
# #
# #registration_template_html: registration.html
# #registration_template_text: registration.txt
#
# # Templates for validation emails sent by the homeserver when adding an email to
# # your user account
# #
# #add_threepid_template_html: add_threepid.html
# #add_threepid_template_text: add_threepid.txt
#
# # Templates for password reset success and failure pages that a user
# # will see after attempting to reset their password
# #
# #password_reset_template_success_html: password_reset_success.html
# #password_reset_template_failure_html: password_reset_failure.html
#
# # Templates for registration success and failure pages that a user
# # will see after attempting to register using an email or phone
# #
# #registration_template_success_html: registration_success.html
# #registration_template_failure_html: registration_failure.html
#
# # Templates for success and failure pages that a user will see after attempting
# # to add an email or phone to their account
# #
# #add_threepid_success_html: add_threepid_success.html
# #add_threepid_failure_html: add_threepid_failure.html
"""
class ThreepidBehaviour(Enum):
"""
Enum to define the behaviour of Synapse with regards to when it contacts an identity
server for 3pid registration and password resets
REMOTE = use an external server to send tokens
LOCAL = send tokens ourselves
OFF = disable registration via 3pid and password resets
"""
REMOTE = "remote"
LOCAL = "local"
OFF = "off"