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105 lines
3.6 KiB
Python
105 lines
3.6 KiB
Python
# Copyright 2015, 2016 OpenMarket Ltd
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# Copyright 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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from typing import Any, List
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from synapse.config.sso import SsoAttributeRequirement
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from synapse.types import JsonDict
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from ._base import Config
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from ._util import validate_config
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class CasConfig(Config):
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"""Cas Configuration
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cas_server_url: URL of CAS server
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"""
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section = "cas"
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def read_config(self, config: JsonDict, **kwargs: Any) -> None:
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cas_config = config.get("cas_config", None)
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self.cas_enabled = cas_config and cas_config.get("enabled", True)
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if self.cas_enabled:
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self.cas_server_url = cas_config["server_url"]
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# TODO Update this to a _synapse URL.
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public_baseurl = self.root.server.public_baseurl
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self.cas_service_url = public_baseurl + "_matrix/client/r0/login/cas/ticket"
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self.cas_displayname_attribute = cas_config.get("displayname_attribute")
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required_attributes = cas_config.get("required_attributes") or {}
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self.cas_required_attributes = _parsed_required_attributes_def(
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required_attributes
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)
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else:
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self.cas_server_url = None
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self.cas_service_url = None
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self.cas_displayname_attribute = None
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self.cas_required_attributes = []
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def generate_config_section(self, **kwargs: Any) -> str:
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return """\
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# Enable Central Authentication Service (CAS) for registration and login.
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#
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cas_config:
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# Uncomment the following to enable authorization against a CAS server.
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# Defaults to false.
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#
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#enabled: true
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# The URL of the CAS authorization endpoint.
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#
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#server_url: "https://cas-server.com"
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# The attribute of the CAS response to use as the display name.
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#
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# If unset, no displayname will be set.
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#
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#displayname_attribute: name
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# It is possible to configure Synapse to only allow logins if CAS attributes
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# match particular values. All of the keys in the mapping below must exist
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# and the values must match the given value. Alternately if the given value
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# is None then any value is allowed (the attribute just must exist).
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# All of the listed attributes must match for the login to be permitted.
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#
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#required_attributes:
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# userGroup: "staff"
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# department: None
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"""
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# CAS uses a legacy required attributes mapping, not the one provided by
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# SsoAttributeRequirement.
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REQUIRED_ATTRIBUTES_SCHEMA = {
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"type": "object",
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"additionalProperties": {"anyOf": [{"type": "string"}, {"type": "null"}]},
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}
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def _parsed_required_attributes_def(
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required_attributes: Any,
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) -> List[SsoAttributeRequirement]:
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validate_config(
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REQUIRED_ATTRIBUTES_SCHEMA,
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required_attributes,
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config_path=("cas_config", "required_attributes"),
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)
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return [SsoAttributeRequirement(k, v) for k, v in required_attributes.items()]
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