forked-synapse/synapse/config/emailconfig.py

295 lines
12 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
import pkg_resources
from ._base import Config, ConfigError
class EmailConfig(Config):
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"
)
email_trust_identity_server_for_password_resets = email_config.get(
"trust_identity_server_for_password_resets", False
)
self.email_password_reset_behaviour = (
"remote" if email_trust_identity_server_for_password_resets else "local"
)
self.password_resets_were_disabled_due_to_email_config = False
if self.email_password_reset_behaviour == "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.password_resets_were_disabled_due_to_email_config = True
self.email_password_reset_behaviour = "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.email_password_reset_behaviour == "local"
):
# make sure we can import the required deps
import jinja2
import bleach
# prevent unused warnings
jinja2
bleach
if self.email_password_reset_behaviour == "local":
required = ["smtp_host", "smtp_port", "notif_from"]
missing = []
for k in required:
if k not in email_config:
missing.append(k)
if len(missing) > 0:
raise RuntimeError(
"email.password_reset_behaviour is set to 'local' "
"but required keys are missing: %s"
% (", ".join(["email." + k for k in missing]),)
)
# Templates for password reset emails
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_password_reset_failure_template = email_config.get(
"password_reset_failure_template", "password_reset_failure.html"
)
# This template does not support any replaceable variables, so we will
# read it from the disk once during setup
email_password_reset_success_template = email_config.get(
"password_reset_success_template", "password_reset_success.html"
)
# Check templates exist
for f in [
self.email_password_reset_template_html,
self.email_password_reset_template_text,
self.email_password_reset_failure_template,
email_password_reset_success_template,
]:
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_success_template
)
self.email_password_reset_success_html_content = self.read_file(
filepath, "email.password_reset_template_success_html"
)
if config.get("public_baseurl") is None:
raise RuntimeError(
"email.password_reset_behaviour is set to 'local' but no "
"public_baseurl is set. This is necessary to generate password "
"reset links"
)
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: "Your Friendly %(app)s Home Server <noreply@example.com>"
# app_name: Matrix
#
# # 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"
#
# # Enable sending password reset emails via the configured, trusted
# # identity servers
# #
# # IMPORTANT! This will give a malicious or overtaken identity server
# # the ability to reset passwords for your users! Make absolutely sure
# # that you want to do this! It is strongly recommended that password
# # reset emails be sent by the homeserver instead
# #
# # If this option is set to false and SMTP options have not been
# # configured, resetting user passwords via email will be disabled
# #
# #trust_identity_server_for_password_resets: false
#
# # 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 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
"""