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218 lines
8.5 KiB
Python
218 lines
8.5 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2020 Quentin Gliech
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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 synapse.python_dependencies import DependencyException, check_requirements
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from synapse.util.module_loader import load_module
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from ._base import Config, ConfigError
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DEFAULT_USER_MAPPING_PROVIDER = "synapse.handlers.oidc_handler.JinjaOidcMappingProvider"
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class OIDCConfig(Config):
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section = "oidc"
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def read_config(self, config, **kwargs):
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self.oidc_enabled = False
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oidc_config = config.get("oidc_config")
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if not oidc_config or not oidc_config.get("enabled", False):
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return
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try:
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check_requirements("oidc")
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except DependencyException as e:
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raise ConfigError(e.message)
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public_baseurl = self.public_baseurl
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if public_baseurl is None:
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raise ConfigError("oidc_config requires a public_baseurl to be set")
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self.oidc_callback_url = public_baseurl + "_synapse/oidc/callback"
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self.oidc_enabled = True
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self.oidc_discover = oidc_config.get("discover", True)
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self.oidc_issuer = oidc_config["issuer"]
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self.oidc_client_id = oidc_config["client_id"]
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self.oidc_client_secret = oidc_config["client_secret"]
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self.oidc_client_auth_method = oidc_config.get(
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"client_auth_method", "client_secret_basic"
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)
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self.oidc_scopes = oidc_config.get("scopes", ["openid"])
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self.oidc_authorization_endpoint = oidc_config.get("authorization_endpoint")
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self.oidc_token_endpoint = oidc_config.get("token_endpoint")
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self.oidc_userinfo_endpoint = oidc_config.get("userinfo_endpoint")
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self.oidc_jwks_uri = oidc_config.get("jwks_uri")
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self.oidc_skip_verification = oidc_config.get("skip_verification", False)
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self.oidc_allow_existing_users = oidc_config.get("allow_existing_users", False)
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ump_config = oidc_config.get("user_mapping_provider", {})
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ump_config.setdefault("module", DEFAULT_USER_MAPPING_PROVIDER)
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ump_config.setdefault("config", {})
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(
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self.oidc_user_mapping_provider_class,
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self.oidc_user_mapping_provider_config,
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) = load_module(ump_config)
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# Ensure loaded user mapping module has defined all necessary methods
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required_methods = [
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"get_remote_user_id",
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"map_user_attributes",
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]
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missing_methods = [
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method
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for method in required_methods
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if not hasattr(self.oidc_user_mapping_provider_class, method)
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]
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if missing_methods:
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raise ConfigError(
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"Class specified by oidc_config."
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"user_mapping_provider.module is missing required "
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"methods: %s" % (", ".join(missing_methods),)
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)
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def generate_config_section(self, config_dir_path, server_name, **kwargs):
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return """\
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# OpenID Connect integration. The following settings can be used to make Synapse
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# use an OpenID Connect Provider for authentication, instead of its internal
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# password database.
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#
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# See https://github.com/matrix-org/synapse/blob/master/docs/openid.md.
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#
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oidc_config:
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# Uncomment the following to enable authorization against an OpenID Connect
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# server. Defaults to false.
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#
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#enabled: true
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# Uncomment the following to disable use of the OIDC discovery mechanism to
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# discover endpoints. Defaults to true.
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#
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#discover: false
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# the OIDC issuer. Used to validate tokens and (if discovery is enabled) to
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# discover the provider's endpoints.
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#
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# Required if 'enabled' is true.
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#
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#issuer: "https://accounts.example.com/"
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# oauth2 client id to use.
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#
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# Required if 'enabled' is true.
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#
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#client_id: "provided-by-your-issuer"
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# oauth2 client secret to use.
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#
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# Required if 'enabled' is true.
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#
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#client_secret: "provided-by-your-issuer"
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# auth method to use when exchanging the token.
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# Valid values are 'client_secret_basic' (default), 'client_secret_post' and
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# 'none'.
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#
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#client_auth_method: client_secret_post
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# list of scopes to request. This should normally include the "openid" scope.
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# Defaults to ["openid"].
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#
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#scopes: ["openid", "profile"]
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# the oauth2 authorization endpoint. Required if provider discovery is disabled.
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#
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#authorization_endpoint: "https://accounts.example.com/oauth2/auth"
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# the oauth2 token endpoint. Required if provider discovery is disabled.
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#
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#token_endpoint: "https://accounts.example.com/oauth2/token"
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# the OIDC userinfo endpoint. Required if discovery is disabled and the
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# "openid" scope is not requested.
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#
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#userinfo_endpoint: "https://accounts.example.com/userinfo"
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# URI where to fetch the JWKS. Required if discovery is disabled and the
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# "openid" scope is used.
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#
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#jwks_uri: "https://accounts.example.com/.well-known/jwks.json"
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# Uncomment to skip metadata verification. Defaults to false.
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#
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# Use this if you are connecting to a provider that is not OpenID Connect
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# compliant.
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# Avoid this in production.
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#
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#skip_verification: true
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# Uncomment to allow a user logging in via OIDC to match a pre-existing account instead
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# of failing. This could be used if switching from password logins to OIDC. Defaults to false.
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#
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#allow_existing_users: true
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# An external module can be provided here as a custom solution to mapping
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# attributes returned from a OIDC provider onto a matrix user.
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#
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user_mapping_provider:
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# The custom module's class. Uncomment to use a custom module.
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# Default is {mapping_provider!r}.
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#
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# See https://github.com/matrix-org/synapse/blob/master/docs/sso_mapping_providers.md#openid-mapping-providers
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# for information on implementing a custom mapping provider.
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#
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#module: mapping_provider.OidcMappingProvider
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# Custom configuration values for the module. This section will be passed as
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# a Python dictionary to the user mapping provider module's `parse_config`
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# method.
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#
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# The examples below are intended for the default provider: they should be
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# changed if using a custom provider.
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#
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config:
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# name of the claim containing a unique identifier for the user.
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# Defaults to `sub`, which OpenID Connect compliant providers should provide.
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#
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#subject_claim: "sub"
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# Jinja2 template for the localpart of the MXID.
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#
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# When rendering, this template is given the following variables:
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# * user: The claims returned by the UserInfo Endpoint and/or in the ID
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# Token
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#
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# This must be configured if using the default mapping provider.
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#
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localpart_template: "{{{{ user.preferred_username }}}}"
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# Jinja2 template for the display name to set on first login.
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#
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# If unset, no displayname will be set.
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#
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#display_name_template: "{{{{ user.given_name }}}} {{{{ user.last_name }}}}"
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# Jinja2 templates for extra attributes to send back to the client during
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# login.
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#
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# Note that these are non-standard and clients will ignore them without modifications.
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#
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#extra_attributes:
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#birthdate: "{{{{ user.birthdate }}}}"
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""".format(
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mapping_provider=DEFAULT_USER_MAPPING_PROVIDER
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)
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