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# Copyright 2020-2021 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.
import logging
from typing import Any, Dict, Optional
import attr
from synapse.types import JsonDict
from ._base import Config
logger = logging.getLogger(__name__)
LEGACY_TEMPLATE_DIR_WARNING = """
This server's configuration file is using the deprecated 'template_dir' setting in the
'sso' section. Support for this setting has been deprecated and will be removed in a
future version of Synapse. Server admins should instead use the new
'custom_template_directory' setting documented here:
https://matrix-org.github.io/synapse/latest/templates.html
---------------------------------------------------------------------------------------"""
@attr.s(frozen=True, auto_attribs=True)
class SsoAttributeRequirement:
"""Object describing a single requirement for SSO attributes."""
attribute: str
# If a value is not given, than the attribute must simply exist.
value: Optional[str]
JSON_SCHEMA = {
"type": "object",
"properties": {"attribute": {"type": "string"}, "value": {"type": "string"}},
"required": ["attribute", "value"],
}
class SSOConfig(Config):
"""SSO Configuration"""
section = "sso"
def read_config(self, config: JsonDict, **kwargs: Any) -> None:
sso_config: Dict[str, Any] = config.get("sso") or {}
# The sso-specific template_dir
self.sso_template_dir = sso_config.get("template_dir")
if self.sso_template_dir is not None:
logger.warning(LEGACY_TEMPLATE_DIR_WARNING)
# Read templates from disk
custom_template_directories = (
self.root.server.custom_template_directory,
self.sso_template_dir,
)
(
self.sso_login_idp_picker_template,
self.sso_redirect_confirm_template,
self.sso_auth_confirm_template,
self.sso_error_template,
sso_account_deactivated_template,
sso_auth_success_template,
self.sso_auth_bad_user_template,
) = self.read_templates(
[
"sso_login_idp_picker.html",
"sso_redirect_confirm.html",
"sso_auth_confirm.html",
"sso_error.html",
"sso_account_deactivated.html",
"sso_auth_success.html",
"sso_auth_bad_user.html",
],
(td for td in custom_template_directories if td),
)
# These templates have no placeholders, so render them here
self.sso_account_deactivated_template = (
sso_account_deactivated_template.render()
)
self.sso_auth_success_template = sso_auth_success_template.render()
self.sso_client_whitelist = sso_config.get("client_whitelist") or []
self.sso_update_profile_information = (
sso_config.get("update_profile_information") or False
)
# Attempt to also whitelist the server's login fallback, since that fallback sets
# the redirect URL to itself (so it can process the login token then return
# gracefully to the client). This would make it pointless to ask the user for
# confirmation, since the URL the confirmation page would be showing wouldn't be
# the client's.
login_fallback_url = (
self.root.server.public_baseurl + "_matrix/static/client/login"
)
self.sso_client_whitelist.append(login_fallback_url)
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