mirror of
https://mau.dev/maunium/synapse.git
synced 2024-10-01 01:36:05 -04:00
abd04b6af0
Co-authored-by: Benjamin Koch <bbbsnowball@gmail.com> This adds configuration flags that will match a user to pre-existing users when logging in via OpenID Connect. This is useful when switching to an existing SSO system.
210 lines
8.2 KiB
Python
210 lines
8.2 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2020 Quentin Gliech
|
|
#
|
|
# 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 synapse.python_dependencies import DependencyException, check_requirements
|
|
from synapse.util.module_loader import load_module
|
|
|
|
from ._base import Config, ConfigError
|
|
|
|
DEFAULT_USER_MAPPING_PROVIDER = "synapse.handlers.oidc_handler.JinjaOidcMappingProvider"
|
|
|
|
|
|
class OIDCConfig(Config):
|
|
section = "oidc"
|
|
|
|
def read_config(self, config, **kwargs):
|
|
self.oidc_enabled = False
|
|
|
|
oidc_config = config.get("oidc_config")
|
|
|
|
if not oidc_config or not oidc_config.get("enabled", False):
|
|
return
|
|
|
|
try:
|
|
check_requirements("oidc")
|
|
except DependencyException as e:
|
|
raise ConfigError(e.message)
|
|
|
|
public_baseurl = self.public_baseurl
|
|
if public_baseurl is None:
|
|
raise ConfigError("oidc_config requires a public_baseurl to be set")
|
|
self.oidc_callback_url = public_baseurl + "_synapse/oidc/callback"
|
|
|
|
self.oidc_enabled = True
|
|
self.oidc_discover = oidc_config.get("discover", True)
|
|
self.oidc_issuer = oidc_config["issuer"]
|
|
self.oidc_client_id = oidc_config["client_id"]
|
|
self.oidc_client_secret = oidc_config["client_secret"]
|
|
self.oidc_client_auth_method = oidc_config.get(
|
|
"client_auth_method", "client_secret_basic"
|
|
)
|
|
self.oidc_scopes = oidc_config.get("scopes", ["openid"])
|
|
self.oidc_authorization_endpoint = oidc_config.get("authorization_endpoint")
|
|
self.oidc_token_endpoint = oidc_config.get("token_endpoint")
|
|
self.oidc_userinfo_endpoint = oidc_config.get("userinfo_endpoint")
|
|
self.oidc_jwks_uri = oidc_config.get("jwks_uri")
|
|
self.oidc_skip_verification = oidc_config.get("skip_verification", False)
|
|
self.oidc_allow_existing_users = oidc_config.get("allow_existing_users", False)
|
|
|
|
ump_config = oidc_config.get("user_mapping_provider", {})
|
|
ump_config.setdefault("module", DEFAULT_USER_MAPPING_PROVIDER)
|
|
ump_config.setdefault("config", {})
|
|
|
|
(
|
|
self.oidc_user_mapping_provider_class,
|
|
self.oidc_user_mapping_provider_config,
|
|
) = load_module(ump_config)
|
|
|
|
# Ensure loaded user mapping module has defined all necessary methods
|
|
required_methods = [
|
|
"get_remote_user_id",
|
|
"map_user_attributes",
|
|
]
|
|
missing_methods = [
|
|
method
|
|
for method in required_methods
|
|
if not hasattr(self.oidc_user_mapping_provider_class, method)
|
|
]
|
|
if missing_methods:
|
|
raise ConfigError(
|
|
"Class specified by oidc_config."
|
|
"user_mapping_provider.module is missing required "
|
|
"methods: %s" % (", ".join(missing_methods),)
|
|
)
|
|
|
|
def generate_config_section(self, config_dir_path, server_name, **kwargs):
|
|
return """\
|
|
# OpenID Connect integration. The following settings can be used to make Synapse
|
|
# use an OpenID Connect Provider for authentication, instead of its internal
|
|
# password database.
|
|
#
|
|
# See https://github.com/matrix-org/synapse/blob/master/docs/openid.md.
|
|
#
|
|
oidc_config:
|
|
# Uncomment the following to enable authorization against an OpenID Connect
|
|
# server. Defaults to false.
|
|
#
|
|
#enabled: true
|
|
|
|
# Uncomment the following to disable use of the OIDC discovery mechanism to
|
|
# discover endpoints. Defaults to true.
|
|
#
|
|
#discover: false
|
|
|
|
# the OIDC issuer. Used to validate tokens and (if discovery is enabled) to
|
|
# discover the provider's endpoints.
|
|
#
|
|
# Required if 'enabled' is true.
|
|
#
|
|
#issuer: "https://accounts.example.com/"
|
|
|
|
# oauth2 client id to use.
|
|
#
|
|
# Required if 'enabled' is true.
|
|
#
|
|
#client_id: "provided-by-your-issuer"
|
|
|
|
# oauth2 client secret to use.
|
|
#
|
|
# Required if 'enabled' is true.
|
|
#
|
|
#client_secret: "provided-by-your-issuer"
|
|
|
|
# auth method to use when exchanging the token.
|
|
# Valid values are 'client_secret_basic' (default), 'client_secret_post' and
|
|
# 'none'.
|
|
#
|
|
#client_auth_method: client_secret_post
|
|
|
|
# list of scopes to request. This should normally include the "openid" scope.
|
|
# Defaults to ["openid"].
|
|
#
|
|
#scopes: ["openid", "profile"]
|
|
|
|
# the oauth2 authorization endpoint. Required if provider discovery is disabled.
|
|
#
|
|
#authorization_endpoint: "https://accounts.example.com/oauth2/auth"
|
|
|
|
# the oauth2 token endpoint. Required if provider discovery is disabled.
|
|
#
|
|
#token_endpoint: "https://accounts.example.com/oauth2/token"
|
|
|
|
# the OIDC userinfo endpoint. Required if discovery is disabled and the
|
|
# "openid" scope is not requested.
|
|
#
|
|
#userinfo_endpoint: "https://accounts.example.com/userinfo"
|
|
|
|
# URI where to fetch the JWKS. Required if discovery is disabled and the
|
|
# "openid" scope is used.
|
|
#
|
|
#jwks_uri: "https://accounts.example.com/.well-known/jwks.json"
|
|
|
|
# Uncomment to skip metadata verification. Defaults to false.
|
|
#
|
|
# Use this if you are connecting to a provider that is not OpenID Connect
|
|
# compliant.
|
|
# Avoid this in production.
|
|
#
|
|
#skip_verification: true
|
|
|
|
# Uncomment to allow a user logging in via OIDC to match a pre-existing account instead
|
|
# of failing. This could be used if switching from password logins to OIDC. Defaults to false.
|
|
#
|
|
#allow_existing_users: true
|
|
|
|
# An external module can be provided here as a custom solution to mapping
|
|
# attributes returned from a OIDC provider onto a matrix user.
|
|
#
|
|
user_mapping_provider:
|
|
# The custom module's class. Uncomment to use a custom module.
|
|
# Default is {mapping_provider!r}.
|
|
#
|
|
# See https://github.com/matrix-org/synapse/blob/master/docs/sso_mapping_providers.md#openid-mapping-providers
|
|
# for information on implementing a custom mapping provider.
|
|
#
|
|
#module: mapping_provider.OidcMappingProvider
|
|
|
|
# Custom configuration values for the module. This section will be passed as
|
|
# a Python dictionary to the user mapping provider module's `parse_config`
|
|
# method.
|
|
#
|
|
# The examples below are intended for the default provider: they should be
|
|
# changed if using a custom provider.
|
|
#
|
|
config:
|
|
# name of the claim containing a unique identifier for the user.
|
|
# Defaults to `sub`, which OpenID Connect compliant providers should provide.
|
|
#
|
|
#subject_claim: "sub"
|
|
|
|
# Jinja2 template for the localpart of the MXID.
|
|
#
|
|
# When rendering, this template is given the following variables:
|
|
# * user: The claims returned by the UserInfo Endpoint and/or in the ID
|
|
# Token
|
|
#
|
|
# This must be configured if using the default mapping provider.
|
|
#
|
|
localpart_template: "{{{{ user.preferred_username }}}}"
|
|
|
|
# Jinja2 template for the display name to set on first login.
|
|
#
|
|
# If unset, no displayname will be set.
|
|
#
|
|
#display_name_template: "{{{{ user.given_name }}}} {{{{ user.last_name }}}}"
|
|
""".format(
|
|
mapping_provider=DEFAULT_USER_MAPPING_PROVIDER
|
|
)
|