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Merge branch 'social_login' into develop

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This commit is contained in:
Richard van der Hoff 2021-01-28 22:08:11 +00:00
commit 0d81a6fa3e
11 changed files with 108 additions and 62 deletions
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2
changelog.d/9183.feature
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@ -1 +1 @@
Add experimental support for allowing clients to pick an SSO Identity Provider ([MSC2858](https://github.com/matrix-org/matrix-doc/pull/2858).
Add experimental support for allowing clients to pick an SSO Identity Provider ([MSC2858](https://github.com/matrix-org/matrix-doc/pull/2858)).

1
changelog.d/9242.feature Normal file
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@ -0,0 +1 @@
Add experimental support for allowing clients to pick an SSO Identity Provider ([MSC2858](https://github.com/matrix-org/matrix-doc/pull/2858)).

1
changelog.d/9245.feature Normal file
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@ -0,0 +1 @@
Add support to the OpenID Connect integration for adding the user's email address.

3
docs/openid.md
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@ -225,6 +225,7 @@ Synapse config:
oidc_providers:
- idp_id: github
idp_name: Github
idp_brand: "org.matrix.github" # optional: styling hint for clients
discover: false
issuer: "https://github.com/"
client_id: "your-client-id" # TO BE FILLED
@ -250,6 +251,7 @@ oidc_providers:
oidc_providers:
- idp_id: google
idp_name: Google
idp_brand: "org.matrix.google" # optional: styling hint for clients
issuer: "https://accounts.google.com/"
client_id: "your-client-id" # TO BE FILLED
client_secret: "your-client-secret" # TO BE FILLED
@ -296,6 +298,7 @@ Synapse config:
oidc_providers:
- idp_id: gitlab
idp_name: Gitlab
idp_brand: "org.matrix.gitlab" # optional: styling hint for clients
issuer: "https://gitlab.com/"
client_id: "your-client-id" # TO BE FILLED
client_secret: "your-client-secret" # TO BE FILLED

28
docs/sample_config.yaml
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@ -1731,10 +1731,14 @@ saml2_config:
# offer the user a choice of login mechanisms.
#
# idp_icon: An optional icon for this identity provider, which is presented
# by identity picker pages. If given, must be an MXC URI of the format
# mxc://<server-name>/<media-id>. (An easy way to obtain such an MXC URI
# is to upload an image to an (unencrypted) room and then copy the "url"
# from the source of the event.)
# by clients and Synapse's own IdP picker page. If given, must be an
# MXC URI of the format mxc://<server-name>/<media-id>. (An easy way to
# obtain such an MXC URI is to upload an image to an (unencrypted) room
# and then copy the "url" from the source of the event.)
#
# idp_brand: An optional brand for this identity provider, allowing clients
# to style the login flow according to the identity provider in question.
# See the spec for possible options here.
#
# discover: set to 'false' to disable the use of the OIDC discovery mechanism
# to discover endpoints. Defaults to true.
@ -1795,9 +1799,9 @@ saml2_config:
#
# For the default provider, the following settings are available:
#
# sub: name of the claim containing a unique identifier for the
# user. Defaults to 'sub', which OpenID Connect compliant
# providers should provide.
# subject_claim: name of the claim containing a unique identifier
# for the user. Defaults to 'sub', which OpenID Connect
# compliant providers should provide.
#
# localpart_template: Jinja2 template for the localpart of the MXID.
# If this is not set, the user will be prompted to choose their
@ -1806,6 +1810,9 @@ saml2_config:
# display_name_template: Jinja2 template for the display name to set
# on first login. If unset, no displayname will be set.
#
# email_template: Jinja2 template for the email address of the user.
# If unset, no email address will be added to the account.
#
# extra_attributes: a map of Jinja2 templates for extra attributes
# to send back to the client during login.
# Note that these are non-standard and clients will ignore them
@ -1841,6 +1848,12 @@ oidc_providers:
# userinfo_endpoint: "https://accounts.example.com/userinfo"
# jwks_uri: "https://accounts.example.com/.well-known/jwks.json"
# skip_verification: true
# user_mapping_provider:
# config:
# subject_claim: "id"
# localpart_template: "{ user.login }"
# display_name_template: "{ user.name }"
# email_template: "{ user.email }"
# For use with Keycloak
#
@ -1855,6 +1868,7 @@ oidc_providers:
#
#- idp_id: github
# idp_name: Github
# idp_brand: org.matrix.github
# discover: false
# issuer: "https://github.com/"
# client_id: "your-client-id" # TO BE FILLED

67
synapse/config/oidc_config.py
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@ -14,7 +14,6 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import string
from collections import Counter
from typing import Iterable, Optional, Tuple, Type
@ -78,10 +77,14 @@ class OIDCConfig(Config):
# offer the user a choice of login mechanisms.
#
# idp_icon: An optional icon for this identity provider, which is presented
# by identity picker pages. If given, must be an MXC URI of the format
# mxc://<server-name>/<media-id>. (An easy way to obtain such an MXC URI
# is to upload an image to an (unencrypted) room and then copy the "url"
# from the source of the event.)
# by clients and Synapse's own IdP picker page. If given, must be an
# MXC URI of the format mxc://<server-name>/<media-id>. (An easy way to
# obtain such an MXC URI is to upload an image to an (unencrypted) room
# and then copy the "url" from the source of the event.)
#
# idp_brand: An optional brand for this identity provider, allowing clients
# to style the login flow according to the identity provider in question.
# See the spec for possible options here.
#
# discover: set to 'false' to disable the use of the OIDC discovery mechanism
# to discover endpoints. Defaults to true.
@ -142,9 +145,9 @@ class OIDCConfig(Config):
#
# For the default provider, the following settings are available:
#
# sub: name of the claim containing a unique identifier for the
# user. Defaults to 'sub', which OpenID Connect compliant
# providers should provide.
# subject_claim: name of the claim containing a unique identifier
# for the user. Defaults to 'sub', which OpenID Connect
# compliant providers should provide.
#
# localpart_template: Jinja2 template for the localpart of the MXID.
# If this is not set, the user will be prompted to choose their
@ -153,6 +156,9 @@ class OIDCConfig(Config):
# display_name_template: Jinja2 template for the display name to set
# on first login. If unset, no displayname will be set.
#
# email_template: Jinja2 template for the email address of the user.
# If unset, no email address will be added to the account.
#
# extra_attributes: a map of Jinja2 templates for extra attributes
# to send back to the client during login.
# Note that these are non-standard and clients will ignore them
@ -188,6 +194,12 @@ class OIDCConfig(Config):
# userinfo_endpoint: "https://accounts.example.com/userinfo"
# jwks_uri: "https://accounts.example.com/.well-known/jwks.json"
# skip_verification: true
# user_mapping_provider:
# config:
# subject_claim: "id"
# localpart_template: "{{ user.login }}"
# display_name_template: "{{ user.name }}"
# email_template: "{{ user.email }}"
# For use with Keycloak
#
@ -202,6 +214,7 @@ class OIDCConfig(Config):
#
#- idp_id: github
# idp_name: Github
# idp_brand: org.matrix.github
# discover: false
# issuer: "https://github.com/"
# client_id: "your-client-id" # TO BE FILLED
@ -225,11 +238,22 @@ OIDC_PROVIDER_CONFIG_SCHEMA = {
"type": "object",
"required": ["issuer", "client_id", "client_secret"],
"properties": {
# TODO: fix the maxLength here depending on what MSC2528 decides
# remember that we prefix the ID given here with `oidc-`
"idp_id": {"type": "string", "minLength": 1, "maxLength": 128},
"idp_id": {
"type": "string",
"minLength": 1,
# MSC2858 allows a maxlen of 255, but we prefix with "oidc-"
"maxLength": 250,
"pattern": "^[A-Za-z0-9._~-]+$",
},
"idp_name": {"type": "string"},
"idp_icon": {"type": "string"},
"idp_brand": {
"type": "string",
# MSC2758-style namespaced identifier
"minLength": 1,
"maxLength": 255,
"pattern": "^[a-z][a-z0-9_.-]*$",
},
"discover": {"type": "boolean"},
"issuer": {"type": "string"},
"client_id": {"type": "string"},
@ -348,25 +372,8 @@ def _parse_oidc_config_dict(
config_path + ("user_mapping_provider", "module"),
)
# MSC2858 will apply certain limits in what can be used as an IdP id, so let's
# enforce those limits now.
# TODO: factor out this stuff to a generic function
idp_id = oidc_config.get("idp_id", "oidc")
# TODO: update this validity check based on what MSC2858 decides.
valid_idp_chars = set(string.ascii_lowercase + string.digits + "-._")
if any(c not in valid_idp_chars for c in idp_id):
raise ConfigError(
'idp_id may only contain a-z, 0-9, "-", ".", "_"',
config_path + ("idp_id",),
)
if idp_id[0] not in string.ascii_lowercase:
raise ConfigError(
"idp_id must start with a-z", config_path + ("idp_id",),
)
# prefix the given IDP with a prefix specific to the SSO mechanism, to avoid
# clashes with other mechs (such as SAML, CAS).
#
@ -392,6 +399,7 @@ def _parse_oidc_config_dict(
idp_id=idp_id,
idp_name=oidc_config.get("idp_name", "OIDC"),
idp_icon=idp_icon,
idp_brand=oidc_config.get("idp_brand"),
discover=oidc_config.get("discover", True),
issuer=oidc_config["issuer"],
client_id=oidc_config["client_id"],
@ -422,6 +430,9 @@ class OidcProviderConfig:
# Optional MXC URI for icon for this IdP.
idp_icon = attr.ib(type=Optional[str])
# Optional brand identifier for this IdP.
idp_brand = attr.ib(type=Optional[str])
# whether the OIDC discovery mechanism is used to discover endpoints
discover = attr.ib(type=bool)

3
synapse/handlers/cas_handler.py
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@ -80,9 +80,10 @@ class CasHandler:
# user-facing name of this auth provider
self.idp_name = "CAS"
# we do not currently support icons for CAS auth, but this is required by
# we do not currently support brands/icons for CAS auth, but this is required by
# the SsoIdentityProvider protocol type.
self.idp_icon = None
self.idp_brand = None
self._sso_handler = hs.get_sso_handler()

51
synapse/handlers/oidc_handler.py
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@ -274,6 +274,9 @@ class OidcProvider:
# MXC URI for icon for this auth provider
self.idp_icon = provider.idp_icon
# optional brand identifier for this auth provider
self.idp_brand = provider.idp_brand
self._sso_handler = hs.get_sso_handler()
self._sso_handler.register_identity_provider(self)
@ -1056,7 +1059,8 @@ class OidcSessionData:
UserAttributeDict = TypedDict(
"UserAttributeDict", {"localpart": Optional[str], "display_name": Optional[str]}
"UserAttributeDict",
{"localpart": Optional[str], "display_name": Optional[str], "emails": List[str]},
)
C = TypeVar("C")
@ -1135,11 +1139,12 @@ def jinja_finalize(thing):
env = Environment(finalize=jinja_finalize)
@attr.s
@attr.s(slots=True, frozen=True)
class JinjaOidcMappingConfig:
subject_claim = attr.ib(type=str)
localpart_template = attr.ib(type=Optional[Template])
display_name_template = attr.ib(type=Optional[Template])
email_template = attr.ib(type=Optional[Template])
extra_attributes = attr.ib(type=Dict[str, Template])
@ -1156,23 +1161,17 @@ class JinjaOidcMappingProvider(OidcMappingProvider[JinjaOidcMappingConfig]):
def parse_config(config: dict) -> JinjaOidcMappingConfig:
subject_claim = config.get("subject_claim", "sub")
localpart_template = None # type: Optional[Template]
if "localpart_template" in config:
def parse_template_config(option_name: str) -> Optional[Template]:
if option_name not in config:
return None
try:
localpart_template = env.from_string(config["localpart_template"])
return env.from_string(config[option_name])
except Exception as e:
raise ConfigError(
"invalid jinja template", path=["localpart_template"]
) from e
raise ConfigError("invalid jinja template", path=[option_name]) from e
display_name_template = None # type: Optional[Template]
if "display_name_template" in config:
try:
display_name_template = env.from_string(config["display_name_template"])
except Exception as e:
raise ConfigError(
"invalid jinja template", path=["display_name_template"]
) from e
localpart_template = parse_template_config("localpart_template")
display_name_template = parse_template_config("display_name_template")
email_template = parse_template_config("email_template")
extra_attributes = {} # type Dict[str, Template]
if "extra_attributes" in config:
@ -1192,6 +1191,7 @@ class JinjaOidcMappingProvider(OidcMappingProvider[JinjaOidcMappingConfig]):
subject_claim=subject_claim,
localpart_template=localpart_template,
display_name_template=display_name_template,
email_template=email_template,
extra_attributes=extra_attributes,
)
@ -1213,16 +1213,23 @@ class JinjaOidcMappingProvider(OidcMappingProvider[JinjaOidcMappingConfig]):
# a usable mxid.
localpart += str(failures) if failures else ""
display_name = None # type: Optional[str]
if self._config.display_name_template is not None:
display_name = self._config.display_name_template.render(
user=userinfo
).strip()
def render_template_field(template: Optional[Template]) -> Optional[str]:
if template is None:
return None
return template.render(user=userinfo).strip()
display_name = render_template_field(self._config.display_name_template)
if display_name == "":
display_name = None
return UserAttributeDict(localpart=localpart, display_name=display_name)
emails = [] # type: List[str]
email = render_template_field(self._config.email_template)
if email:
emails.append(email)
return UserAttributeDict(
localpart=localpart, display_name=display_name, emails=emails
)
async def get_extra_attributes(self, userinfo: UserInfo, token: Token) -> JsonDict:
extras = {} # type: Dict[str, str]

3
synapse/handlers/saml_handler.py
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@ -78,9 +78,10 @@ class SamlHandler(BaseHandler):
# user-facing name of this auth provider
self.idp_name = "SAML"
# we do not currently support icons for SAML auth, but this is required by
# we do not currently support icons/brands for SAML auth, but this is required by
# the SsoIdentityProvider protocol type.
self.idp_icon = None
self.idp_brand = None
# a map from saml session id to Saml2SessionData object
self._outstanding_requests_dict = {} # type: Dict[str, Saml2SessionData]

5
synapse/handlers/sso.py
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@ -80,6 +80,11 @@ class SsoIdentityProvider(Protocol):
"""Optional MXC URI for user-facing icon"""
return None
@property
def idp_brand(self) -> Optional[str]:
"""Optional branding identifier"""
return None
@abc.abstractmethod
async def handle_redirect_request(
self,

2
synapse/rest/client/v1/login.py
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@ -333,6 +333,8 @@ def _get_auth_flow_dict_for_idp(idp: SsoIdentityProvider) -> JsonDict:
e = {"id": idp.idp_id, "name": idp.idp_name} # type: JsonDict
if idp.idp_icon:
e["icon"] = idp.idp_icon
if idp.idp_brand:
e["brand"] = idp.idp_brand
return e