# -*- 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 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" ) 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 ] 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) 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_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" ) # 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" ) # 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_password_reset_template_failure_html, email_password_reset_template_success_html, email_registration_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" ) 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 " # 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" # # # 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 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 """ 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"