150 lines
5.9 KiB
Python
150 lines
5.9 KiB
Python
# Copyright 2020-2021 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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import logging
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from typing import Any, Dict, Optional
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import attr
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from synapse.types import JsonDict
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from ._base import Config
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logger = logging.getLogger(__name__)
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LEGACY_TEMPLATE_DIR_WARNING = """
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This server's configuration file is using the deprecated 'template_dir' setting in the
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'sso' section. Support for this setting has been deprecated and will be removed in a
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future version of Synapse. Server admins should instead use the new
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'custom_templates_directory' setting documented here:
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https://matrix-org.github.io/synapse/latest/templates.html
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---------------------------------------------------------------------------------------"""
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@attr.s(frozen=True, auto_attribs=True)
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class SsoAttributeRequirement:
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"""Object describing a single requirement for SSO attributes."""
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attribute: str
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# If a value is not given, than the attribute must simply exist.
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value: Optional[str]
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JSON_SCHEMA = {
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"type": "object",
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"properties": {"attribute": {"type": "string"}, "value": {"type": "string"}},
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"required": ["attribute", "value"],
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}
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class SSOConfig(Config):
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"""SSO Configuration"""
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section = "sso"
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def read_config(self, config: JsonDict, **kwargs: Any) -> None:
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sso_config: Dict[str, Any] = config.get("sso") or {}
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# The sso-specific template_dir
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self.sso_template_dir = sso_config.get("template_dir")
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if self.sso_template_dir is not None:
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logger.warning(LEGACY_TEMPLATE_DIR_WARNING)
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# Read templates from disk
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custom_template_directories = (
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self.root.server.custom_template_directory,
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self.sso_template_dir,
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)
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(
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self.sso_login_idp_picker_template,
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self.sso_redirect_confirm_template,
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self.sso_auth_confirm_template,
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self.sso_error_template,
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sso_account_deactivated_template,
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sso_auth_success_template,
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self.sso_auth_bad_user_template,
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) = self.read_templates(
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[
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"sso_login_idp_picker.html",
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"sso_redirect_confirm.html",
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"sso_auth_confirm.html",
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"sso_error.html",
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"sso_account_deactivated.html",
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"sso_auth_success.html",
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"sso_auth_bad_user.html",
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],
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(td for td in custom_template_directories if td),
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)
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# These templates have no placeholders, so render them here
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self.sso_account_deactivated_template = (
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sso_account_deactivated_template.render()
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)
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self.sso_auth_success_template = sso_auth_success_template.render()
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self.sso_client_whitelist = sso_config.get("client_whitelist") or []
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self.sso_update_profile_information = (
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sso_config.get("update_profile_information") or False
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)
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# Attempt to also whitelist the server's login fallback, since that fallback sets
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# the redirect URL to itself (so it can process the login token then return
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# gracefully to the client). This would make it pointless to ask the user for
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# confirmation, since the URL the confirmation page would be showing wouldn't be
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# the client's.
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login_fallback_url = (
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self.root.server.public_baseurl + "_matrix/static/client/login"
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)
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self.sso_client_whitelist.append(login_fallback_url)
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def generate_config_section(self, **kwargs: Any) -> str:
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return """\
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# Additional settings to use with single-sign on systems such as OpenID Connect,
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# SAML2 and CAS.
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#
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# Server admins can configure custom templates for pages related to SSO. See
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# https://matrix-org.github.io/synapse/latest/templates.html for more information.
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#
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sso:
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# A list of client URLs which are whitelisted so that the user does not
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# have to confirm giving access to their account to the URL. Any client
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# whose URL starts with an entry in the following list will not be subject
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# to an additional confirmation step after the SSO login is completed.
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#
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# WARNING: An entry such as "https://my.client" is insecure, because it
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# will also match "https://my.client.evil.site", exposing your users to
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# phishing attacks from evil.site. To avoid this, include a slash after the
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# hostname: "https://my.client/".
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#
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# The login fallback page (used by clients that don't natively support the
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# required login flows) is whitelisted in addition to any URLs in this list.
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#
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# By default, this list contains only the login fallback page.
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#
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#client_whitelist:
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# - https://riot.im/develop
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# - https://my.custom.client/
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# Uncomment to keep a user's profile fields in sync with information from
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# the identity provider. Currently only syncing the displayname is
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# supported. Fields are checked on every SSO login, and are updated
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# if necessary.
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#
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# Note that enabling this option will override user profile information,
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# regardless of whether users have opted-out of syncing that
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# information when first signing in. Defaults to false.
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#
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#update_profile_information: true
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"""
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