Continue refactor; fetch resources from the providers' settings

src/oidc_test/auth_provider.py

@@ -1,26 +1,41 @@
+from json import JSONDecodeError
 from typing import Any
 from jwt import decode
 import logging
+from collections import OrderedDict
 
+from pydantic import ConfigDict
 from authlib.integrations.starlette_client.apps import StarletteOAuth2App
+from httpx import AsyncClient
 
 from .settings import AuthProviderSettings, settings
+from .models import User
 
 logger = logging.getLogger("oidc-test")
 
 
+class NoPublicKey(Exception):
+    pass
+
+
 class Provider(AuthProviderSettings):
-    class Config:
-        arbitrary_types_allowed = True
+    # To allow authlib_client as StarletteOAuth2App
+    model_config = ConfigDict(arbitrary_types_allowed=True)  # type:ignore
 
     authlib_client: StarletteOAuth2App = StarletteOAuth2App(None)
+    info: dict[str, Any] = {}
+    unknown_auth_user: User
 
-    def decode(self, token: str, verify_signature: bool = True) -> dict[str, Any]:
+    def decode(self, token: str, verify_signature: bool | None = None) -> dict[str, Any]:
         """Decode the token with signature check"""
+        if self.public_key is None:
+            raise NoPublicKey
+        if verify_signature is None:
+            verify_signature = self.skip_verify_signature
         if settings.debug_token:
             decoded = decode(
                 token,
-                self.get_public_key(),
+                self.public_key,
                 algorithms=[self.signature_alg],
                 audience=["account", "oidc-test", "oidc-test-web"],
                 options={
@@ -31,7 +46,7 @@ class Provider(AuthProviderSettings):
             logger.debug(str(decoded))
         return decode(
             token,
-            self.get_public_key(),
+            self.public_key,
             algorithms=[self.signature_alg],
             audience=["account", "oidc-test", "oidc-test-web"],
             options={
@@ -39,5 +54,42 @@ class Provider(AuthProviderSettings):
             },  # not settings.insecure.skip_verify_signature},
         )
 
+    async def get_info(self):
+        # Get the public key:
+        async with AsyncClient() as client:
+            public_key: str | None = None
+            if self.info_url is not None:
+                try:
+                    provider_info = await client.get(self.info_url)
+                except Exception:
+                    raise NoPublicKey
+                try:
+                    self.info = provider_info.json()
+                except JSONDecodeError:
+                    raise NoPublicKey
+                if "public_key" in self.info:
+                    # For Keycloak
+                    try:
+                        public_key = str(self.info["public_key"])
+                    except KeyError:
+                        raise NoPublicKey
+                elif "keys" in self.info:
+                    # For Forgejo/Gitea
+                    try:
+                        public_key = str(self.info["keys"][0]["n"])
+                    except KeyError:
+                        raise NoPublicKey
+            if self.public_key_url is not None:
+                resp = await client.get(self.public_key_url)
+                public_key = resp.text
+            if public_key is None:
+                raise NoPublicKey
+            self.public_key = "\n".join(
+                ["-----BEGIN PUBLIC KEY-----", public_key, "-----END PUBLIC KEY-----"]
+            )
 
-providers: dict[str, Provider] = {}
+    def get_session_key(self, userinfo):
+        return userinfo[self.session_key]
+
+
+providers: OrderedDict[str, Provider] = OrderedDict()

src/oidc_test/auth_utils.py

@@ -5,8 +5,7 @@ import logging
 from fastapi import HTTPException, Request, Depends, status
 from fastapi.security import OAuth2PasswordBearer
 from authlib.integrations.starlette_client import OAuth, OAuthError, StarletteOAuth2App
-from jwt import ExpiredSignatureError, InvalidKeyError, DecodeError
-from httpx import AsyncClient
+from jwt import ExpiredSignatureError, InvalidKeyError, DecodeError, PyJWTError
 
 # from authlib.oauth1.auth import OAuthToken
 from authlib.oauth2.auth import OAuth2Token
@@ -40,7 +39,7 @@ async def update_token(
 ):
     """Update the token in the database"""
     provider = providers[provider_id]
-    sid: str = provider.decode(token["id_token"])["sid"]
+    sid: str = provider.get_session_key(provider.decode(token["id_token"]))
     item = await db.get_token(provider, sid)
     # update old token
     item["access_token"] = token["access_token"]
@@ -59,7 +58,12 @@ def init_providers():
     """Add oidc providers to authlib from the settings
     and build the providers dict"""
     for provider_settings in settings.auth.providers:
-        provider = Provider(**provider_settings.model_dump())
+        provider_settings_dict = provider_settings.model_dump()
+        # Add an anonymous user, that cannot be identified but has provided a valid access token
+        provider_settings_dict["unknown_auth_user"] = User(
+            sub="", auth_provider_id=provider_settings.id
+        )
+        provider = Provider(**provider_settings_dict)
         authlib_oauth.register(
             name=provider.id,
             server_metadata_url=provider.openid_configuration,
@@ -85,15 +89,6 @@ def init_providers():
 init_providers()
 
 
-async def get_providers_info():
-    # Get the public key:
-    async with AsyncClient() as client:
-        for provider in providers.values():
-            if provider.info_url:
-                provider_info = await client.get(provider.url)
-                provider.info = provider_info.json()
-
-
 def get_auth_provider_client_or_none(request: Request) -> StarletteOAuth2App | None:
     """Return the oidc_provider from a request object, from the session.
     It can be used in Depends()"""
@@ -166,6 +161,8 @@ async def get_token(request: Request) -> OAuth2Token:
     try:
         provider = providers[request.session.get("auth_provider_id", "")]
     except KeyError:
+        request.session.pop("auth_provider_id", None)
+        request.session.pop("user_sub", None)
         raise HTTPException(status.HTTP_401_UNAUTHORIZED, "Invalid provider")
     try:
         return await db.get_token(
@@ -239,29 +236,27 @@ async def get_user_from_token(
             raise HTTPException(
                 status.HTTP_401_UNAUTHORIZED, f"Unknown auth provider '{auth_provider_id}'"
             )
-    if token == "":
+    if token == "None":
+        request.session.pop("auth_provider_id", None)
+        request.session.pop("user_sub", None)
         raise HTTPException(status.HTTP_401_UNAUTHORIZED, "No token")
     try:
         payload = provider.decode(token)
-    except ExpiredSignatureError as err:
-        logger.info(f"Expired signature: {err}")
+    except ExpiredSignatureError:
         raise HTTPException(
             status.HTTP_401_UNAUTHORIZED,
             "Expired signature (refresh not implemented yet)",
         )
-    except InvalidKeyError as err:
-        logger.info(f"Invalid key: {err}")
+    except InvalidKeyError:
         raise HTTPException(status.HTTP_401_UNAUTHORIZED, "Invalid auth provider key")
-    except Exception as err:
-        logger.info("Cannot decode token, see below")
-        logger.exception(err)
-        raise HTTPException(status.HTTP_401_UNAUTHORIZED, "Cannot decode token")
+    except PyJWTError as err:
+        raise HTTPException(
+            status.HTTP_401_UNAUTHORIZED, f"Cannot decode token: {err.__class__.__name__}"
+        )
     try:
         user_id = payload["sub"]
     except KeyError:
-        raise HTTPException(
-            status.HTTP_401_UNAUTHORIZED, "Wrong token: 'sub' (user id) not found"
-        )
+        return provider.unknown_auth_user
     try:
         user = await db.get_user(user_id)
         if user.access_token != token:

src/oidc_test/database.py

@@ -3,6 +3,7 @@
 import logging
 
 from authlib.oauth2.rfc6749 import OAuth2Token
+from jwt import PyJWTError
 
 from .models import User, Role
 from .auth_provider import Provider, providers
@@ -35,7 +36,10 @@ class Database:
         if access_token_decoded is None:
             assert auth_provider.name is not None
             provider = providers[auth_provider.id]
-            access_token_decoded = provider.decode(access_token)
+            try:
+                access_token_decoded = provider.decode(access_token)
+            except PyJWTError:
+                access_token_decoded = {}
         user_info["auth_provider_id"] = auth_provider.id
         user = User(**user_info)
         user.userinfo = user_info
@@ -68,8 +72,7 @@ class Database:
     async def add_token(self, provider: Provider, token: OAuth2Token) -> None:
         """Store a token using as key the sid (auth provider's session id)
         in the id_token"""
-        assert isinstance(provider, Provider)
-        sid = token["userinfo"]["sid"]
+        sid = provider.get_session_key(token["userinfo"])
         self.tokens[sid] = token
 
     async def get_token(

src/oidc_test/main.py

@@ -27,14 +27,13 @@ from authlib.oauth2.rfc6749 import OAuth2Token
 # from pkce import generate_code_verifier, generate_pkce_pair
 
 from .settings import settings
-from .auth_provider import Provider, providers
+from .auth_provider import NoPublicKey, Provider, providers
 from .models import User
 from .auth_utils import (
     get_auth_provider,
     get_auth_provider_or_none,
     get_current_user_or_none,
     authlib_oauth,
-    get_providers_info,
     get_token_or_none,
     get_token,
     update_token,
@@ -50,7 +49,12 @@ templates = Jinja2Templates(Path(__file__).parent / "templates")
 @asynccontextmanager
 async def lifespan(app: FastAPI):
     assert app is not None
-    await get_providers_info()
+    for provider in list(providers.values()):
+        try:
+            await provider.get_info()
+        except NoPublicKey:
+            logger.warn(f"Disable {provider.id}: public key not found")
+            del providers[provider.id]
     yield
 
 
@@ -82,12 +86,13 @@ async def home(
     token: Annotated[OAuth2Token | None, Depends(get_token_or_none)],
 ) -> HTMLResponse:
     context = {
-        "settings": settings.model_dump(),
+        "show_token": settings.show_token,
         "user": user,
         "now": datetime.now(),
         "auth_provider": provider,
     }
     if provider is None or token is None:
+        context["providers"] = providers
         context["access_token"] = None
         context["id_token_parsed"] = None
         context["access_token_parsed"] = None
@@ -96,14 +101,23 @@ async def home(
     else:
         context["access_token"] = token["access_token"]
         context["resources"] = provider.resources
-        access_token_parsed = provider.decode(token["access_token"], verify_signature=False)
-        context["access_token_scope"] = access_token_parsed["scope"]
+        try:
+            access_token_parsed = provider.decode(token["access_token"], verify_signature=False)
+        except PyJWTError as err:
+            access_token_parsed = {"Cannot parse": err.__class__.__name__}
+        try:
+            context["access_token_scope"] = access_token_parsed["scope"]
+        except KeyError:
+            context["access_token_scope"] = None
         # context["id_token_parsed"] = pretty_details(user, now)
         context["id_token_parsed"] = provider.decode(token["id_token"], verify_signature=False)
         context["access_token_parsed"] = access_token_parsed
-        context["refresh_token_parsed"] = provider.decode(
-            token["refresh_token"], verify_signature=False
-        )
+        try:
+            context["refresh_token_parsed"] = provider.decode(
+                token["refresh_token"], verify_signature=False
+            )
+        except PyJWTError as err:
+            context["refresh_token_parsed"] = {"Cannot parse": err.__class__.__name__}
     return templates.TemplateResponse(name="home.html", request=request, context=context)
 
 
@@ -144,16 +158,19 @@ async def login(request: Request, auth_provider_id: str) -> RedirectResponse:
 
 
 @app.get("/auth/{auth_provider_id}")
-async def auth(request: Request, auth_provider_id: str) -> RedirectResponse:
+async def auth(
+    request: Request,
+    auth_provider_id: str,
+) -> RedirectResponse:
     """Decrypt the auth token, store it to the session (cookie based)
     and response to the browser with a redirect to a "welcome user" page.
     """
     try:
-        authlib_client: StarletteOAuth2App = getattr(authlib_oauth, auth_provider_id)
-    except AttributeError:
+        provider = providers[auth_provider_id]
+    except KeyError:
         raise HTTPException(status.HTTP_401_UNAUTHORIZED, "No such provider")
     try:
-        token: OAuth2Token = await authlib_client.authorize_access_token(request)
+        token: OAuth2Token = await provider.authlib_client.authorize_access_token(request)
     except OAuthError as error:
         raise HTTPException(status.HTTP_401_UNAUTHORIZED, detail=error.error)
     # Remember the authlib_client in the session
@@ -168,6 +185,14 @@ async def auth(request: Request, auth_provider_id: str) -> RedirectResponse:
         request.session["auth_provider_id"] = auth_provider_id
         # User id (sub) given by auth provider
         sub = userinfo["sub"]
+        ## Get additional data from userinfo endpoint
+        # try:
+        #    user_info_from_endpoint = await authlib_client.userinfo(
+        #        token=token, follow_redirects=True
+        #    )
+        # except Exception as err:
+        #    logger.warn(f"Cannot get userinfo from endpoint: {err}")
+        #    user_info_from_endpoint = {}
         # Build and remember the user in the session
         request.session["user_sub"] = sub
         # Store the user in the database, which also verifies the token validity and signature
@@ -185,9 +210,8 @@ async def auth(request: Request, auth_provider_id: str) -> RedirectResponse:
             )
         assert isinstance(user, User)
         # Add the provider session id to the session
-        request.session["sid"] = userinfo["sid"]
+        request.session["sid"] = provider.get_session_key(userinfo)
         # Add the token to the db because it is used for logout
-        provider = providers[auth_provider_id]
         await db.add_token(provider, token)
         # Send the user to the home: (s)he is authenticated
         return RedirectResponse(url=request.url_for("home"))
@@ -211,15 +235,16 @@ async def logout(
     request: Request,
     provider: Annotated[Provider, Depends(get_auth_provider)],
 ) -> RedirectResponse:
-    # Clear session
-    request.session.pop("user_sub", None)
     # Get provider's endpoint
     if (
         provider_logout_uri := provider.authlib_client.server_metadata.get("end_session_endpoint")
     ) is None:
-        logger.warn(f"Cannot find end_session_endpoint for provider {provider.name}")
+        logger.warn(f"Cannot find end_session_endpoint for provider {provider.id}")
         return RedirectResponse(request.url_for("non_compliant_logout"))
     post_logout_uri = request.url_for("home")
+    # Clear session
+    request.session.pop("user_sub", None)
+    request.session.pop("auth_provider_id", None)
     try:
         token = await db.get_token(provider, request.session.pop("sid", None))
     except TokenNotInDb:
@@ -242,15 +267,16 @@ async def logout(
 @app.get("/non-compliant-logout")
 async def non_compliant_logout(
     request: Request,
-    provider: Annotated[StarletteOAuth2App, Depends(get_auth_provider)],
+    provider: Annotated[Provider, Depends(get_auth_provider)],
 ):
     """A page for non-compliant OAuth2 servers that we cannot log out."""
-    # Clear the remain of the session
+    # Clear session
+    request.session.pop("user_sub", None)
     request.session.pop("auth_provider_id", None)
     return templates.TemplateResponse(
         name="non_compliant_logout.html",
         request=request,
-        context={"oidc_provider": provider, "home_url": request.url_for("home")},
+        context={"auth_provider": provider, "home_url": request.url_for("home")},
     )
 
 

src/oidc_test/models.py

@@ -49,13 +49,13 @@ class User(UserBase):
         try:
             access_token_scopes = self.decode_access_token().get("scope", "").split(" ")
         except Exception as err:
-            logger.info(f"Access token cannot be decoded: {err}")
+            logger.debug(f"Cannot find scope because the access token cannot be decoded: {err}")
             access_token_scopes = []
         return scope in set(info_scopes + access_token_scopes)
 
     def decode_access_token(self, verify_signature: bool = True):
-        assert self.access_token is not None
-        assert self.auth_provider_id is not None
+        assert self.access_token is not None, "no access_token"
+        assert self.auth_provider_id is not None, "no auth_provider_id"
         from .auth_provider import providers
 
         return providers[self.auth_provider_id].decode(

src/oidc_test/resource_server.py

@@ -2,7 +2,7 @@ from datetime import datetime
 from typing import Annotated
 import logging
 
-from authlib.jose import Key
+from authlib.oauth2.auth import OAuth2Token
 from httpx import AsyncClient
 from jwt.exceptions import ExpiredSignatureError, InvalidTokenError
 from fastapi import FastAPI, HTTPException, Depends, status
@@ -14,11 +14,12 @@ from fastapi.middleware.cors import CORSMiddleware
 
 from .models import User
 from .auth_utils import (
+    get_token_or_none,
     get_user_from_token,
     UserWithRole,
 )
 from .settings import settings
-from .auth_provider import providers
+from .auth_provider import providers, Provider
 
 logger = logging.getLogger("oidc-test")
 
@@ -113,23 +114,51 @@ async def get_protected_by_foorole_or_barrole(
 
 
 @resource_server.get("/{id}")
-async def get_resource_(
+async def get_resource(
     id: str,
-    # user: Annotated[User, Depends(get_current_user)],
-    # oidc_provider: Annotated[StarletteOAuth2App, Depends(get_oidc_provider)],
-    # token: Annotated[OAuth2Token, Depends(get_token)],
     user: Annotated[User, Depends(get_user_from_token)],
-):
+    token: Annotated[OAuth2Token | None, Depends(get_token_or_none)],
+) -> dict | list:
     """Generic path for testing a resource provided by a provider"""
-    return await get_resource(id, user)
+    provider = providers[user.auth_provider_id]
+    if id in [r.id for r in provider.resources]:
+        return await get_external_resource(
+            provider=provider,
+            id=id,
+            access_token=token["access_token"] if token else None,
+            user=user,
+        )
+    return await get_resource_(id, user)
 
 
-async def get_resource(resource_id: str, user: User) -> dict:
+async def get_external_resource(
+    provider: Provider, id: str, access_token: str | None, user: User
+) -> dict | list:
+    resource = [r for r in provider.resources if r.id == id][0]
+    async with AsyncClient() as client:
+        resp = await client.get(
+            url=provider.url + resource.url,
+            headers={
+                "Content-type": "application/json",
+                "Authorization": f"Bearer {access_token}",
+            },
+        )
+    if resp.is_error:
+        raise HTTPException(resp.status_code, f"Cannot fetch resource: {resp.reason_phrase}")
+    resp_length = len(resp.text)
+    if resp_length > 1024:
+        return {"msg": f"The resource is too long ({resp_length} bytes) to show here"}
+    else:
+        return resp.json()
+
+
+async def get_resource_(resource_id: str, user: User) -> dict:
     """
     Resource processing: build an informative rely as a simple showcase
     """
+    provider = providers[user.auth_provider_id]
     try:
-        pname = providers[user.auth_provider_id].name
+        pname = provider.name
     except KeyError:
         pname = "?"
     resp = {
@@ -164,7 +193,6 @@ async def process(user, resource_id, resp):
     Too simple to be serious.
     It's a good fit for a plugin architecture for production
     """
-    assert user is not None
     if resource_id == "time":
         resp["time"] = datetime.now().strftime("%c")
     elif resource_id == "bs":

src/oidc_test/settings.py

@@ -21,6 +21,7 @@ class Resource(BaseModel):
 
     id: str
     name: str
+    url: str
 
 
 class AuthProviderSettings(BaseModel):
@@ -39,10 +40,12 @@ class AuthProviderSettings(BaseModel):
     info_url: str | None = (
         None  # Used eg. for Keycloak's public key (see https://stackoverflow.com/questions/54318633/getting-keycloaks-public-key)
     )
-    info: dict[str, str | int] | None = None  # Info fetched from info_url, eg. public key
     public_key: str | None = None
+    public_key_url: str | None = None
     signature_alg: str = "RS256"
     resource_provider_scopes: list[str] = []
+    session_key: str = "sid"
+    skip_verify_signature: bool = True
 
     @computed_field
     @property
@@ -64,17 +67,6 @@ class AuthProviderSettings(BaseModel):
         else:
             return None
 
-    def get_public_key(self) -> str:
-        """Return the public key formatted for decoding token"""
-        public_key = self.public_key or (self.info is not None and self.info["public_key"])
-        if public_key is None:
-            raise AttributeError(f"Cannot get public key for {self.name}")
-        return f"""
-        -----BEGIN PUBLIC KEY-----
-        {public_key}
-        -----END PUBLIC KEY-----
-        """
-
 
 class ResourceProvider(BaseModel):
     id: str

src/oidc_test/static/utils.js

@@ -55,15 +55,24 @@ async function get_resource(id, token, authProvider) {
   msg.innerHTML = ""
   resourceElem.innerHTML = ""
   Object.entries(resource).forEach(
-    ([k, v]) => {
+    ([key, value]) => {
       let r = document.createElement('div')
       let kElem = document.createElement('div')
-      kElem.innerText = k
+      kElem.innerText = key
       kElem.className = "key"
       let vElem = document.createElement('div')
-      vElem.innerText = v
+      if (typeof value == "object") {
+        Object.entries(value).forEach(v => {
+          const ne = document.createElement('div')
+          ne.innerHTML = `<span class="key">${v[0]}</span>: <span class="value">${v[1]}</span>`
+          vElem.appendChild(ne)
+        })
+      }
+      else {
+        vElem.innerText = value
+      }
       vElem.className = "value"
-      if (k == "sorry") {
+      if (key == "sorry") {
         vElem.classList.add("error")
       }
       r.appendChild(kElem)

src/oidc_test/templates/home.html

@@ -5,25 +5,24 @@
     with OpenID Connect and OAuth2 with different providers.
   </p>
   {% if not user %} 
-  <div class="login-box">
-    <p class="description">Log in with:</p>
-    <table class="providers">
-      {% for provider in settings.auth.providers %}
-      <tr class="provider">
-        <td>
-          <a class="link" href="login/{{ provider.id }}"><div>{{ provider.name }}</div></a>
-        </td>
-        <td class="hint">{{ provider.hint }}</div>
-        </td>
-      </tr>
-      {% else %}
-        <div class="error">There is no authentication provider defined.
-        Hint: check the settings.yaml file.</div>
-      {% endfor %}
-    </table>
-  </div>
-  {% endif %}
-  {% if user %}
+    <div class="login-box">
+      <p class="description">Log in with:</p>
+      <table class="providers">
+        {% for provider in providers.values() %}
+        <tr class="provider">
+          <td>
+            <a class="link" href="login/{{ provider.id }}"><div>{{ provider.name }}</div></a>
+          </td>
+          <td class="hint">{{ provider.hint }}</div>
+          </td>
+        </tr>
+        {% else %}
+          <div class="error">There is no authentication provider defined.
+          Hint: check the settings.yaml file.</div>
+        {% endfor %}
+      </table>
+    </div>
+  {% else %}
     <div class="user-info">
       <p>Hey, {{ user.name }}</p>
       {% if user.picture %}
@@ -83,22 +82,22 @@
       <button resource-id="fast_api_depends" class="hidden" onclick="get_resource('fast_api_depends', '{{ access_token }}', '{{ auth_provider.id }}')">Using FastAPI Depends</button>
       <!--<button resource-id="introspect" onclick="get_resource('introspect', '{{ access_token }}', '{{ auth_provider.id }}')">Introspect token (401 expected)</button>-->
     </div>
-    <div class="resourceResult">
-      <div id="resource" class="resource"></div>
-      <div id="msg" class="msg error"></div>
-    </div>
     {% if resources %}
       <p>
         Resources for this provider:
       </p>
       <div class="links-to-check">
         {% for resource in resources %}
-          <a href="{{ request.url_for('get_resource', id=resource.id) }}">{{ resource.name }}</a>
+        <button resource-id="{{ resource.id }}" onclick="get_resource('{{ resource.id }}', '{{ access_token }}', '{{ auth_provider.id }}')">{{ resource.name }}</buttona>
         {% endfor %}
       </div>
     {% endif %}
+    <div class="resourceResult">
+      <div id="resource" class="resource"></div>
+      <div id="msg" class="msg error"></div>
+    </div>
   </div>
-  {% if settings.show_token and id_token_parsed %}
+  {% if show_token and id_token_parsed %}
     <div class="token-info">
       <hr>
       <div>

src/oidc_test/templates/non_compliant_logout.html

@@ -6,12 +6,12 @@
     authorisation to log in again without asking for credentials.
   </p>
   <p>
-    This is because {{ oidc_provider.name }} does not provide "end_session_endpoint" in its metadata
-    (see: <a href="{{ oidc_provider._server_metadata_url }}">{{ oidc_provider._server_metadata_url }}</a>).
+    This is because {{ auth_provider.name }} does not provide "end_session_endpoint" in its metadata
+    (see: <a href="{{ auth_provider.authlib_client._server_metadata_url }}">{{ auth_provider.authlib_client._server_metadata_url }}</a>).
   </p>
   <p>
     You can just also go back to the <a href="{{ home_url }}">application home page</a>, but
-    it recommended to go to the <a href="{{ oidc_provider.server_metadata['issuer'] }}">OIDC provider's site</a>
+    it recommended to go to the <a href="{{ auth_provider.authlib_client.server_metadata['issuer'] }}">OIDC provider's site</a>
     and log out explicitely from there.
   </p>
 {% endblock %}