diff options
| -rw-r--r-- | changelog.d/7658.feature | 1 | ||||
| -rw-r--r-- | docs/openid.md | 41 | ||||
| -rw-r--r-- | docs/sample_config.yaml | 8 | ||||
| -rw-r--r-- | synapse/config/oidc_config.py | 9 | ||||
| -rw-r--r-- | synapse/handlers/oidc_handler.py | 11 | ||||
| -rw-r--r-- | tests/handlers/test_oidc.py | 10 |
6 files changed, 65 insertions, 15 deletions
diff --git a/changelog.d/7658.feature b/changelog.d/7658.feature new file mode 100644 index 0000000000..fbf345988d --- /dev/null +++ b/changelog.d/7658.feature @@ -0,0 +1 @@ +Add a configuration option for always using the "userinfo endpoint" for OpenID Connect. This fixes support for some identity providers, e.g. GitLab. Contributed by Benjamin Koch. diff --git a/docs/openid.md b/docs/openid.md index 70b37f858b..4873681999 100644 --- a/docs/openid.md +++ b/docs/openid.md @@ -238,13 +238,36 @@ Synapse config: ```yaml oidc_config: - enabled: true - issuer: "https://id.twitch.tv/oauth2/" - client_id: "your-client-id" # TO BE FILLED - client_secret: "your-client-secret" # TO BE FILLED - client_auth_method: "client_secret_post" - user_mapping_provider: - config: - localpart_template: '{{ user.preferred_username }}' - display_name_template: '{{ user.name }}' + enabled: true + issuer: "https://id.twitch.tv/oauth2/" + client_id: "your-client-id" # TO BE FILLED + client_secret: "your-client-secret" # TO BE FILLED + client_auth_method: "client_secret_post" + user_mapping_provider: + config: + localpart_template: "{{ user.preferred_username }}" + display_name_template: "{{ user.name }}" +``` + +### GitLab + +1. Create a [new application](https://gitlab.com/profile/applications). +2. Add the `read_user` and `openid` scopes. +3. Add this Callback URL: `[synapse public baseurl]/_synapse/oidc/callback` + +Synapse config: + +```yaml +oidc_config: + enabled: true + issuer: "https://gitlab.com/" + client_id: "your-client-id" # TO BE FILLED + client_secret: "your-client-secret" # TO BE FILLED + client_auth_method: "client_secret_post" + scopes: ["openid", "read_user"] + user_profile_method: "userinfo_endpoint" + user_mapping_provider: + config: + localpart_template: '{{ user.nickname }}' + display_name_template: '{{ user.name }}' ``` diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml index 8a3206e845..b2c1d7a737 100644 --- a/docs/sample_config.yaml +++ b/docs/sample_config.yaml @@ -1714,6 +1714,14 @@ oidc_config: # #skip_verification: true + # Whether to fetch the user profile from the userinfo endpoint. Valid + # values are: "auto" or "userinfo_endpoint". + # + # Defaults to "auto", which fetches the userinfo endpoint if "openid" is included + # in `scopes`. Uncomment the following to always fetch the userinfo endpoint. + # + #user_profile_method: "userinfo_endpoint" + # 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. # diff --git a/synapse/config/oidc_config.py b/synapse/config/oidc_config.py index f924116819..7597fbc864 100644 --- a/synapse/config/oidc_config.py +++ b/synapse/config/oidc_config.py @@ -56,6 +56,7 @@ class OIDCConfig(Config): 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_user_profile_method = oidc_config.get("user_profile_method", "auto") self.oidc_allow_existing_users = oidc_config.get("allow_existing_users", False) ump_config = oidc_config.get("user_mapping_provider", {}) @@ -159,6 +160,14 @@ class OIDCConfig(Config): # #skip_verification: true + # Whether to fetch the user profile from the userinfo endpoint. Valid + # values are: "auto" or "userinfo_endpoint". + # + # Defaults to "auto", which fetches the userinfo endpoint if "openid" is included + # in `scopes`. Uncomment the following to always fetch the userinfo endpoint. + # + #user_profile_method: "userinfo_endpoint" + # 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. # diff --git a/synapse/handlers/oidc_handler.py b/synapse/handlers/oidc_handler.py index 19cd652675..05ac86e697 100644 --- a/synapse/handlers/oidc_handler.py +++ b/synapse/handlers/oidc_handler.py @@ -96,6 +96,7 @@ class OidcHandler: self.hs = hs self._callback_url = hs.config.oidc_callback_url # type: str self._scopes = hs.config.oidc_scopes # type: List[str] + self._user_profile_method = hs.config.oidc_user_profile_method # type: str self._client_auth = ClientAuth( hs.config.oidc_client_id, hs.config.oidc_client_secret, @@ -196,11 +197,11 @@ class OidcHandler: % (m["response_types_supported"],) ) - # If the openid scope was not requested, we need a userinfo endpoint to fetch user infos + # Ensure there's a userinfo endpoint to fetch from if it is required. if self._uses_userinfo: if m.get("userinfo_endpoint") is None: raise ValueError( - 'provider has no "userinfo_endpoint", even though it is required because the "openid" scope is not requested' + 'provider has no "userinfo_endpoint", even though it is required' ) else: # If we're not using userinfo, we need a valid jwks to validate the ID token @@ -220,8 +221,10 @@ class OidcHandler: ``access_token`` with the ``userinfo_endpoint``. """ - # Maybe that should be user-configurable and not inferred? - return "openid" not in self._scopes + return ( + "openid" not in self._scopes + or self._user_profile_method == "userinfo_endpoint" + ) async def load_metadata(self) -> OpenIDProviderMetadata: """Load and validate the provider metadata. diff --git a/tests/handlers/test_oidc.py b/tests/handlers/test_oidc.py index d5087e58be..b6f436c016 100644 --- a/tests/handlers/test_oidc.py +++ b/tests/handlers/test_oidc.py @@ -286,9 +286,15 @@ class OidcHandlerTestCase(HomeserverTestCase): h._validate_metadata, ) - # Tests for configs that the userinfo endpoint + # Tests for configs that require the userinfo endpoint self.assertFalse(h._uses_userinfo) - h._scopes = [] # do not request the openid scope + self.assertEqual(h._user_profile_method, "auto") + h._user_profile_method = "userinfo_endpoint" + self.assertTrue(h._uses_userinfo) + + # Revert the profile method and do not request the "openid" scope. + h._user_profile_method = "auto" + h._scopes = [] self.assertTrue(h._uses_userinfo) self.assertRaisesRegex(ValueError, "userinfo_endpoint", h._validate_metadata) |