updates

Backend/venv/lib/python3.12/site-packages/authlib/integrations/base_client/__init__.py

@@ -0,0 +1,29 @@
+from .errors import InvalidTokenError
+from .errors import MismatchingStateError
+from .errors import MissingRequestTokenError
+from .errors import MissingTokenError
+from .errors import OAuthError
+from .errors import TokenExpiredError
+from .errors import UnsupportedTokenTypeError
+from .framework_integration import FrameworkIntegration
+from .registry import BaseOAuth
+from .sync_app import BaseApp
+from .sync_app import OAuth1Mixin
+from .sync_app import OAuth2Mixin
+from .sync_openid import OpenIDMixin
+
+__all__ = [
+    "BaseOAuth",
+    "BaseApp",
+    "OAuth1Mixin",
+    "OAuth2Mixin",
+    "OpenIDMixin",
+    "FrameworkIntegration",
+    "OAuthError",
+    "MissingRequestTokenError",
+    "MissingTokenError",
+    "TokenExpiredError",
+    "InvalidTokenError",
+    "UnsupportedTokenTypeError",
+    "MismatchingStateError",
+]

Backend/venv/lib/python3.12/site-packages/authlib/integrations/base_client/async_app.py

@@ -0,0 +1,152 @@
+import logging
+import time
+
+from authlib.common.urls import urlparse
+
+from .errors import MissingRequestTokenError
+from .errors import MissingTokenError
+from .sync_app import OAuth1Base
+from .sync_app import OAuth2Base
+
+log = logging.getLogger(__name__)
+
+__all__ = ["AsyncOAuth1Mixin", "AsyncOAuth2Mixin"]
+
+
+class AsyncOAuth1Mixin(OAuth1Base):
+    async def request(self, method, url, token=None, **kwargs):
+        async with self._get_oauth_client() as session:
+            return await _http_request(self, session, method, url, token, kwargs)
+
+    async def create_authorization_url(self, redirect_uri=None, **kwargs):
+        """Generate the authorization url and state for HTTP redirect.
+
+        :param redirect_uri: Callback or redirect URI for authorization.
+        :param kwargs: Extra parameters to include.
+        :return: dict
+        """
+        if not self.authorize_url:
+            raise RuntimeError('Missing "authorize_url" value')
+
+        if self.authorize_params:
+            kwargs.update(self.authorize_params)
+
+        async with self._get_oauth_client() as client:
+            client.redirect_uri = redirect_uri
+            params = {}
+            if self.request_token_params:
+                params.update(self.request_token_params)
+            request_token = await client.fetch_request_token(
+                self.request_token_url, **params
+            )
+            log.debug(f"Fetch request token: {request_token!r}")
+            url = client.create_authorization_url(self.authorize_url, **kwargs)
+            state = request_token["oauth_token"]
+        return {"url": url, "request_token": request_token, "state": state}
+
+    async def fetch_access_token(self, request_token=None, **kwargs):
+        """Fetch access token in one step.
+
+        :param request_token: A previous request token for OAuth 1.
+        :param kwargs: Extra parameters to fetch access token.
+        :return: A token dict.
+        """
+        async with self._get_oauth_client() as client:
+            if request_token is None:
+                raise MissingRequestTokenError()
+            # merge request token with verifier
+            token = {}
+            token.update(request_token)
+            token.update(kwargs)
+            client.token = token
+            params = self.access_token_params or {}
+            token = await client.fetch_access_token(self.access_token_url, **params)
+        return token
+
+
+class AsyncOAuth2Mixin(OAuth2Base):
+    async def _on_update_token(self, token, refresh_token=None, access_token=None):
+        if self._update_token:
+            await self._update_token(
+                token,
+                refresh_token=refresh_token,
+                access_token=access_token,
+            )
+
+    async def load_server_metadata(self):
+        if self._server_metadata_url and "_loaded_at" not in self.server_metadata:
+            async with self.client_cls(**self.client_kwargs) as client:
+                resp = await client.request(
+                    "GET", self._server_metadata_url, withhold_token=True
+                )
+                resp.raise_for_status()
+                metadata = resp.json()
+                metadata["_loaded_at"] = time.time()
+            self.server_metadata.update(metadata)
+        return self.server_metadata
+
+    async def request(self, method, url, token=None, **kwargs):
+        metadata = await self.load_server_metadata()
+        async with self._get_oauth_client(**metadata) as session:
+            return await _http_request(self, session, method, url, token, kwargs)
+
+    async def create_authorization_url(self, redirect_uri=None, **kwargs):
+        """Generate the authorization url and state for HTTP redirect.
+
+        :param redirect_uri: Callback or redirect URI for authorization.
+        :param kwargs: Extra parameters to include.
+        :return: dict
+        """
+        metadata = await self.load_server_metadata()
+        authorization_endpoint = self.authorize_url or metadata.get(
+            "authorization_endpoint"
+        )
+        if not authorization_endpoint:
+            raise RuntimeError('Missing "authorize_url" value')
+
+        if self.authorize_params:
+            kwargs.update(self.authorize_params)
+
+        async with self._get_oauth_client(**metadata) as client:
+            client.redirect_uri = redirect_uri
+            return self._create_oauth2_authorization_url(
+                client, authorization_endpoint, **kwargs
+            )
+
+    async def fetch_access_token(self, redirect_uri=None, **kwargs):
+        """Fetch access token in the final step.
+
+        :param redirect_uri: Callback or Redirect URI that is used in
+                             previous :meth:`authorize_redirect`.
+        :param kwargs: Extra parameters to fetch access token.
+        :return: A token dict.
+        """
+        metadata = await self.load_server_metadata()
+        token_endpoint = self.access_token_url or metadata.get("token_endpoint")
+        async with self._get_oauth_client(**metadata) as client:
+            if redirect_uri is not None:
+                client.redirect_uri = redirect_uri
+            params = {}
+            if self.access_token_params:
+                params.update(self.access_token_params)
+            params.update(kwargs)
+            token = await client.fetch_token(token_endpoint, **params)
+        return token
+
+
+async def _http_request(ctx, session, method, url, token, kwargs):
+    request = kwargs.pop("request", None)
+    withhold_token = kwargs.get("withhold_token")
+    if ctx.api_base_url and not url.startswith(("https://", "http://")):
+        url = urlparse.urljoin(ctx.api_base_url, url)
+
+    if withhold_token:
+        return await session.request(method, url, **kwargs)
+
+    if token is None and ctx._fetch_token and request:
+        token = await ctx._fetch_token(request)
+    if token is None:
+        raise MissingTokenError()
+
+    session.token = token
+    return await session.request(method, url, **kwargs)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/base_client/async_openid.py

@@ -0,0 +1,85 @@
+from authlib.jose import JsonWebKey
+from authlib.jose import JsonWebToken
+from authlib.oidc.core import CodeIDToken
+from authlib.oidc.core import ImplicitIDToken
+from authlib.oidc.core import UserInfo
+
+__all__ = ["AsyncOpenIDMixin"]
+
+
+class AsyncOpenIDMixin:
+    async def fetch_jwk_set(self, force=False):
+        metadata = await self.load_server_metadata()
+        jwk_set = metadata.get("jwks")
+        if jwk_set and not force:
+            return jwk_set
+
+        uri = metadata.get("jwks_uri")
+        if not uri:
+            raise RuntimeError('Missing "jwks_uri" in metadata')
+
+        async with self.client_cls(**self.client_kwargs) as client:
+            resp = await client.request("GET", uri, withhold_token=True)
+            resp.raise_for_status()
+            jwk_set = resp.json()
+
+        self.server_metadata["jwks"] = jwk_set
+        return jwk_set
+
+    async def userinfo(self, **kwargs):
+        """Fetch user info from ``userinfo_endpoint``."""
+        metadata = await self.load_server_metadata()
+        resp = await self.get(metadata["userinfo_endpoint"], **kwargs)
+        resp.raise_for_status()
+        data = resp.json()
+        return UserInfo(data)
+
+    async def parse_id_token(
+        self, token, nonce, claims_options=None, claims_cls=None, leeway=120
+    ):
+        """Return an instance of UserInfo from token's ``id_token``."""
+        claims_params = dict(
+            nonce=nonce,
+            client_id=self.client_id,
+        )
+        if claims_cls is None:
+            if "access_token" in token:
+                claims_params["access_token"] = token["access_token"]
+                claims_cls = CodeIDToken
+            else:
+                claims_cls = ImplicitIDToken
+
+        metadata = await self.load_server_metadata()
+        if claims_options is None and "issuer" in metadata:
+            claims_options = {"iss": {"values": [metadata["issuer"]]}}
+
+        alg_values = metadata.get("id_token_signing_alg_values_supported")
+        if not alg_values:
+            alg_values = ["RS256"]
+
+        jwt = JsonWebToken(alg_values)
+
+        jwk_set = await self.fetch_jwk_set()
+        try:
+            claims = jwt.decode(
+                token["id_token"],
+                key=JsonWebKey.import_key_set(jwk_set),
+                claims_cls=claims_cls,
+                claims_options=claims_options,
+                claims_params=claims_params,
+            )
+        except ValueError:
+            jwk_set = await self.fetch_jwk_set(force=True)
+            claims = jwt.decode(
+                token["id_token"],
+                key=JsonWebKey.import_key_set(jwk_set),
+                claims_cls=claims_cls,
+                claims_options=claims_options,
+                claims_params=claims_params,
+            )
+
+        # https://github.com/authlib/authlib/issues/259
+        if claims.get("nonce_supported") is False:
+            claims.params["nonce"] = None
+        claims.validate(leeway=leeway)
+        return UserInfo(claims)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/base_client/errors.py

@@ -0,0 +1,30 @@
+from authlib.common.errors import AuthlibBaseError
+
+
+class OAuthError(AuthlibBaseError):
+    error = "oauth_error"
+
+
+class MissingRequestTokenError(OAuthError):
+    error = "missing_request_token"
+
+
+class MissingTokenError(OAuthError):
+    error = "missing_token"
+
+
+class TokenExpiredError(OAuthError):
+    error = "token_expired"
+
+
+class InvalidTokenError(OAuthError):
+    error = "token_invalid"
+
+
+class UnsupportedTokenTypeError(OAuthError):
+    error = "unsupported_token_type"
+
+
+class MismatchingStateError(OAuthError):
+    error = "mismatching_state"
+    description = "CSRF Warning! State not equal in request and response."

Backend/venv/lib/python3.12/site-packages/authlib/integrations/base_client/framework_integration.py

@@ -0,0 +1,64 @@
+import json
+import time
+
+
+class FrameworkIntegration:
+    expires_in = 3600
+
+    def __init__(self, name, cache=None):
+        self.name = name
+        self.cache = cache
+
+    def _get_cache_data(self, key):
+        value = self.cache.get(key)
+        if not value:
+            return None
+        try:
+            return json.loads(value)
+        except (TypeError, ValueError):
+            return None
+
+    def _clear_session_state(self, session):
+        now = time.time()
+        for key in dict(session):
+            if "_authlib_" in key:
+                # TODO: remove in future
+                session.pop(key)
+            elif key.startswith("_state_"):
+                value = session[key]
+                exp = value.get("exp")
+                if not exp or exp < now:
+                    session.pop(key)
+
+    def get_state_data(self, session, state):
+        key = f"_state_{self.name}_{state}"
+        if self.cache:
+            value = self._get_cache_data(key)
+        else:
+            value = session.get(key)
+        if value:
+            return value.get("data")
+        return None
+
+    def set_state_data(self, session, state, data):
+        key = f"_state_{self.name}_{state}"
+        if self.cache:
+            self.cache.set(key, json.dumps({"data": data}), self.expires_in)
+        else:
+            now = time.time()
+            session[key] = {"data": data, "exp": now + self.expires_in}
+
+    def clear_state_data(self, session, state):
+        key = f"_state_{self.name}_{state}"
+        if self.cache:
+            self.cache.delete(key)
+        else:
+            session.pop(key, None)
+            self._clear_session_state(session)
+
+    def update_token(self, token, refresh_token=None, access_token=None):
+        raise NotImplementedError()
+
+    @staticmethod
+    def load_config(oauth, name, params):
+        raise NotImplementedError()

Backend/venv/lib/python3.12/site-packages/authlib/integrations/base_client/registry.py

@@ -0,0 +1,139 @@
+import functools
+
+from .framework_integration import FrameworkIntegration
+
+__all__ = ["BaseOAuth"]
+
+
+OAUTH_CLIENT_PARAMS = (
+    "client_id",
+    "client_secret",
+    "request_token_url",
+    "request_token_params",
+    "access_token_url",
+    "access_token_params",
+    "refresh_token_url",
+    "refresh_token_params",
+    "authorize_url",
+    "authorize_params",
+    "api_base_url",
+    "client_kwargs",
+    "server_metadata_url",
+)
+
+
+class BaseOAuth:
+    """Registry for oauth clients.
+
+    Create an instance for registry::
+
+        oauth = OAuth()
+    """
+
+    oauth1_client_cls = None
+    oauth2_client_cls = None
+    framework_integration_cls = FrameworkIntegration
+
+    def __init__(self, cache=None, fetch_token=None, update_token=None):
+        self._registry = {}
+        self._clients = {}
+        self.cache = cache
+        self.fetch_token = fetch_token
+        self.update_token = update_token
+
+    def create_client(self, name):
+        """Create or get the given named OAuth client. For instance, the
+        OAuth registry has ``.register`` a twitter client, developers may
+        access the client with::
+
+            client = oauth.create_client("twitter")
+
+        :param: name: Name of the remote application
+        :return: OAuth remote app
+        """
+        if name in self._clients:
+            return self._clients[name]
+
+        if name not in self._registry:
+            return None
+
+        overwrite, config = self._registry[name]
+        client_cls = config.pop("client_cls", None)
+
+        if client_cls and client_cls.OAUTH_APP_CONFIG:
+            kwargs = client_cls.OAUTH_APP_CONFIG
+            kwargs.update(config)
+        else:
+            kwargs = config
+
+        kwargs = self.generate_client_kwargs(name, overwrite, **kwargs)
+        framework = self.framework_integration_cls(name, self.cache)
+        if client_cls:
+            client = client_cls(framework, name, **kwargs)
+        elif kwargs.get("request_token_url"):
+            client = self.oauth1_client_cls(framework, name, **kwargs)
+        else:
+            client = self.oauth2_client_cls(framework, name, **kwargs)
+
+        self._clients[name] = client
+        return client
+
+    def register(self, name, overwrite=False, **kwargs):
+        """Registers a new remote application.
+
+        :param name: Name of the remote application.
+        :param overwrite: Overwrite existing config with framework settings.
+        :param kwargs: Parameters for :class:`RemoteApp`.
+
+        Find parameters for the given remote app class. When a remote app is
+        registered, it can be accessed with *named* attribute::
+
+            oauth.register('twitter', client_id='', ...)
+            oauth.twitter.get('timeline')
+        """
+        self._registry[name] = (overwrite, kwargs)
+        return self.create_client(name)
+
+    def generate_client_kwargs(self, name, overwrite, **kwargs):
+        fetch_token = kwargs.pop("fetch_token", None)
+        update_token = kwargs.pop("update_token", None)
+
+        config = self.load_config(name, OAUTH_CLIENT_PARAMS)
+        if config:
+            kwargs = _config_client(config, kwargs, overwrite)
+
+        if not fetch_token and self.fetch_token:
+            fetch_token = functools.partial(self.fetch_token, name)
+
+        kwargs["fetch_token"] = fetch_token
+
+        if not kwargs.get("request_token_url"):
+            if not update_token and self.update_token:
+                update_token = functools.partial(self.update_token, name)
+
+            kwargs["update_token"] = update_token
+        return kwargs
+
+    def load_config(self, name, params):
+        return self.framework_integration_cls.load_config(self, name, params)
+
+    def __getattr__(self, key):
+        try:
+            return object.__getattribute__(self, key)
+        except AttributeError as exc:
+            if key in self._registry:
+                return self.create_client(key)
+            raise AttributeError(f"No such client: {key}") from exc
+
+
+def _config_client(config, kwargs, overwrite):
+    for k in OAUTH_CLIENT_PARAMS:
+        v = config.get(k, None)
+        if k not in kwargs:
+            kwargs[k] = v
+        elif overwrite and v:
+            if isinstance(kwargs[k], dict):
+                kwargs[k].update(v)
+            else:
+                kwargs[k] = v
+    return kwargs

Backend/venv/lib/python3.12/site-packages/authlib/integrations/base_client/sync_app.py

@@ -0,0 +1,377 @@
+import logging
+import time
+
+from authlib.common.security import generate_token
+from authlib.common.urls import urlparse
+from authlib.consts import default_user_agent
+
+from .errors import MismatchingStateError
+from .errors import MissingRequestTokenError
+from .errors import MissingTokenError
+
+log = logging.getLogger(__name__)
+
+
+class BaseApp:
+    client_cls = None
+    OAUTH_APP_CONFIG = None
+
+    def request(self, method, url, token=None, **kwargs):
+        raise NotImplementedError()
+
+    def get(self, url, **kwargs):
+        """Invoke GET http request.
+
+        If ``api_base_url`` configured, shortcut is available::
+
+            client.get("users/lepture")
+        """
+        return self.request("GET", url, **kwargs)
+
+    def post(self, url, **kwargs):
+        """Invoke POST http request.
+
+        If ``api_base_url`` configured, shortcut is available::
+
+            client.post("timeline", json={"text": "Hi"})
+        """
+        return self.request("POST", url, **kwargs)
+
+    def patch(self, url, **kwargs):
+        """Invoke PATCH http request.
+
+        If ``api_base_url`` configured, shortcut is available::
+
+            client.patch("profile", json={"name": "Hsiaoming Yang"})
+        """
+        return self.request("PATCH", url, **kwargs)
+
+    def put(self, url, **kwargs):
+        """Invoke PUT http request.
+
+        If ``api_base_url`` configured, shortcut is available::
+
+            client.put("profile", json={"name": "Hsiaoming Yang"})
+        """
+        return self.request("PUT", url, **kwargs)
+
+    def delete(self, url, **kwargs):
+        """Invoke DELETE http request.
+
+        If ``api_base_url`` configured, shortcut is available::
+
+            client.delete("posts/123")
+        """
+        return self.request("DELETE", url, **kwargs)
+
+
+class _RequestMixin:
+    def _get_requested_token(self, request):
+        if self._fetch_token and request:
+            return self._fetch_token(request)
+
+    def _send_token_request(self, session, method, url, token, kwargs):
+        request = kwargs.pop("request", None)
+        withhold_token = kwargs.get("withhold_token")
+        if self.api_base_url and not url.startswith(("https://", "http://")):
+            url = urlparse.urljoin(self.api_base_url, url)
+
+        if withhold_token:
+            return session.request(method, url, **kwargs)
+
+        if token is None:
+            token = self._get_requested_token(request)
+
+        if token is None:
+            raise MissingTokenError()
+
+        session.token = token
+        return session.request(method, url, **kwargs)
+
+
+class OAuth1Base:
+    client_cls = None
+
+    def __init__(
+        self,
+        framework,
+        name=None,
+        fetch_token=None,
+        client_id=None,
+        client_secret=None,
+        request_token_url=None,
+        request_token_params=None,
+        access_token_url=None,
+        access_token_params=None,
+        authorize_url=None,
+        authorize_params=None,
+        api_base_url=None,
+        client_kwargs=None,
+        user_agent=None,
+        **kwargs,
+    ):
+        self.framework = framework
+        self.name = name
+        self.client_id = client_id
+        self.client_secret = client_secret
+        self.request_token_url = request_token_url
+        self.request_token_params = request_token_params
+        self.access_token_url = access_token_url
+        self.access_token_params = access_token_params
+        self.authorize_url = authorize_url
+        self.authorize_params = authorize_params
+        self.api_base_url = api_base_url
+        self.client_kwargs = client_kwargs or {}
+
+        self._fetch_token = fetch_token
+        self._user_agent = user_agent or default_user_agent
+        self._kwargs = kwargs
+
+    def _get_oauth_client(self):
+        session = self.client_cls(
+            self.client_id, self.client_secret, **self.client_kwargs
+        )
+        session.headers["User-Agent"] = self._user_agent
+        return session
+
+
+class OAuth1Mixin(_RequestMixin, OAuth1Base):
+    def request(self, method, url, token=None, **kwargs):
+        with self._get_oauth_client() as session:
+            return self._send_token_request(session, method, url, token, kwargs)
+
+    def create_authorization_url(self, redirect_uri=None, **kwargs):
+        """Generate the authorization url and state for HTTP redirect.
+
+        :param redirect_uri: Callback or redirect URI for authorization.
+        :param kwargs: Extra parameters to include.
+        :return: dict
+        """
+        if not self.authorize_url:
+            raise RuntimeError('Missing "authorize_url" value')
+
+        if self.authorize_params:
+            kwargs.update(self.authorize_params)
+
+        with self._get_oauth_client() as client:
+            client.redirect_uri = redirect_uri
+            params = self.request_token_params or {}
+            request_token = client.fetch_request_token(self.request_token_url, **params)
+            log.debug(f"Fetch request token: {request_token!r}")
+            url = client.create_authorization_url(self.authorize_url, **kwargs)
+            state = request_token["oauth_token"]
+        return {"url": url, "request_token": request_token, "state": state}
+
+    def fetch_access_token(self, request_token=None, **kwargs):
+        """Fetch access token in one step.
+
+        :param request_token: A previous request token for OAuth 1.
+        :param kwargs: Extra parameters to fetch access token.
+        :return: A token dict.
+        """
+        with self._get_oauth_client() as client:
+            if request_token is None:
+                raise MissingRequestTokenError()
+            # merge request token with verifier
+            token = {}
+            token.update(request_token)
+            token.update(kwargs)
+            client.token = token
+            params = self.access_token_params or {}
+            token = client.fetch_access_token(self.access_token_url, **params)
+        return token
+
+
+class OAuth2Base:
+    client_cls = None
+
+    def __init__(
+        self,
+        framework,
+        name=None,
+        fetch_token=None,
+        update_token=None,
+        client_id=None,
+        client_secret=None,
+        access_token_url=None,
+        access_token_params=None,
+        authorize_url=None,
+        authorize_params=None,
+        api_base_url=None,
+        client_kwargs=None,
+        server_metadata_url=None,
+        compliance_fix=None,
+        client_auth_methods=None,
+        user_agent=None,
+        **kwargs,
+    ):
+        self.framework = framework
+        self.name = name
+        self.client_id = client_id
+        self.client_secret = client_secret
+        self.access_token_url = access_token_url
+        self.access_token_params = access_token_params
+        self.authorize_url = authorize_url
+        self.authorize_params = authorize_params
+        self.api_base_url = api_base_url
+        self.client_kwargs = client_kwargs or {}
+
+        self.compliance_fix = compliance_fix
+        self.client_auth_methods = client_auth_methods
+        self._fetch_token = fetch_token
+        self._update_token = update_token
+        self._user_agent = user_agent or default_user_agent
+
+        self._server_metadata_url = server_metadata_url
+        self.server_metadata = kwargs
+
+    def _on_update_token(self, token, refresh_token=None, access_token=None):
+        raise NotImplementedError()
+
+    def _get_oauth_client(self, **metadata):
+        client_kwargs = {}
+        client_kwargs.update(self.client_kwargs)
+        client_kwargs.update(metadata)
+
+        if self.authorize_url:
+            client_kwargs["authorization_endpoint"] = self.authorize_url
+        if self.access_token_url:
+            client_kwargs["token_endpoint"] = self.access_token_url
+
+        session = self.client_cls(
+            client_id=self.client_id,
+            client_secret=self.client_secret,
+            update_token=self._on_update_token,
+            **client_kwargs,
+        )
+        if self.client_auth_methods:
+            for f in self.client_auth_methods:
+                session.register_client_auth_method(f)
+
+        if self.compliance_fix:
+            self.compliance_fix(session)
+
+        session.headers["User-Agent"] = self._user_agent
+        return session
+
+    @staticmethod
+    def _format_state_params(state_data, params):
+        if state_data is None:
+            raise MismatchingStateError()
+
+        code_verifier = state_data.get("code_verifier")
+        if code_verifier:
+            params["code_verifier"] = code_verifier
+
+        redirect_uri = state_data.get("redirect_uri")
+        if redirect_uri:
+            params["redirect_uri"] = redirect_uri
+        return params
+
+    @staticmethod
+    def _create_oauth2_authorization_url(client, authorization_endpoint, **kwargs):
+        rv = {}
+        if client.code_challenge_method:
+            code_verifier = kwargs.get("code_verifier")
+            if not code_verifier:
+                code_verifier = generate_token(48)
+                kwargs["code_verifier"] = code_verifier
+            rv["code_verifier"] = code_verifier
+            log.debug(f"Using code_verifier: {code_verifier!r}")
+
+        scope = kwargs.get("scope", client.scope)
+        scope = (
+            (scope if isinstance(scope, (list, tuple)) else scope.split())
+            if scope
+            else None
+        )
+        if scope and "openid" in scope:
+            # this is an OpenID Connect service
+            nonce = kwargs.get("nonce")
+            if not nonce:
+                nonce = generate_token(20)
+                kwargs["nonce"] = nonce
+            rv["nonce"] = nonce
+
+        url, state = client.create_authorization_url(authorization_endpoint, **kwargs)
+        rv["url"] = url
+        rv["state"] = state
+        return rv
+
+
+class OAuth2Mixin(_RequestMixin, OAuth2Base):
+    def _on_update_token(self, token, refresh_token=None, access_token=None):
+        if callable(self._update_token):
+            self._update_token(
+                token,
+                refresh_token=refresh_token,
+                access_token=access_token,
+            )
+        self.framework.update_token(
+            token,
+            refresh_token=refresh_token,
+            access_token=access_token,
+        )
+
+    def request(self, method, url, token=None, **kwargs):
+        metadata = self.load_server_metadata()
+        with self._get_oauth_client(**metadata) as session:
+            return self._send_token_request(session, method, url, token, kwargs)
+
+    def load_server_metadata(self):
+        if self._server_metadata_url and "_loaded_at" not in self.server_metadata:
+            with self.client_cls(**self.client_kwargs) as session:
+                resp = session.request(
+                    "GET", self._server_metadata_url, withhold_token=True
+                )
+                resp.raise_for_status()
+                metadata = resp.json()
+
+            metadata["_loaded_at"] = time.time()
+            self.server_metadata.update(metadata)
+        return self.server_metadata
+
+    def create_authorization_url(self, redirect_uri=None, **kwargs):
+        """Generate the authorization url and state for HTTP redirect.
+
+        :param redirect_uri: Callback or redirect URI for authorization.
+        :param kwargs: Extra parameters to include.
+        :return: dict
+        """
+        metadata = self.load_server_metadata()
+        authorization_endpoint = self.authorize_url or metadata.get(
+            "authorization_endpoint"
+        )
+
+        if not authorization_endpoint:
+            raise RuntimeError('Missing "authorize_url" value')
+
+        if self.authorize_params:
+            kwargs.update(self.authorize_params)
+
+        with self._get_oauth_client(**metadata) as client:
+            if redirect_uri is not None:
+                client.redirect_uri = redirect_uri
+            return self._create_oauth2_authorization_url(
+                client, authorization_endpoint, **kwargs
+            )
+
+    def fetch_access_token(self, redirect_uri=None, **kwargs):
+        """Fetch access token in the final step.
+
+        :param redirect_uri: Callback or Redirect URI that is used in
+                             previous :meth:`authorize_redirect`.
+        :param kwargs: Extra parameters to fetch access token.
+        :return: A token dict.
+        """
+        metadata = self.load_server_metadata()
+        token_endpoint = self.access_token_url or metadata.get("token_endpoint")
+        with self._get_oauth_client(**metadata) as client:
+            if redirect_uri is not None:
+                client.redirect_uri = redirect_uri
+            params = {}
+            if self.access_token_params:
+                params.update(self.access_token_params)
+            params.update(kwargs)
+            token = client.fetch_token(token_endpoint, **params)
+            return token

Backend/venv/lib/python3.12/site-packages/authlib/integrations/base_client/sync_openid.py

@@ -0,0 +1,95 @@
+from authlib.jose import JsonWebKey
+from authlib.jose import JsonWebToken
+from authlib.jose import jwt
+from authlib.oidc.core import CodeIDToken
+from authlib.oidc.core import ImplicitIDToken
+from authlib.oidc.core import UserInfo
+
+
+class OpenIDMixin:
+    def fetch_jwk_set(self, force=False):
+        metadata = self.load_server_metadata()
+        jwk_set = metadata.get("jwks")
+        if jwk_set and not force:
+            return jwk_set
+
+        uri = metadata.get("jwks_uri")
+        if not uri:
+            raise RuntimeError('Missing "jwks_uri" in metadata')
+
+        with self.client_cls(**self.client_kwargs) as session:
+            resp = session.request("GET", uri, withhold_token=True)
+            resp.raise_for_status()
+            jwk_set = resp.json()
+
+        self.server_metadata["jwks"] = jwk_set
+        return jwk_set
+
+    def userinfo(self, **kwargs):
+        """Fetch user info from ``userinfo_endpoint``."""
+        metadata = self.load_server_metadata()
+        resp = self.get(metadata["userinfo_endpoint"], **kwargs)
+        resp.raise_for_status()
+        data = resp.json()
+        return UserInfo(data)
+
+    def parse_id_token(
+        self, token, nonce, claims_options=None, claims_cls=None, leeway=120
+    ):
+        """Return an instance of UserInfo from token's ``id_token``."""
+        if "id_token" not in token:
+            return None
+
+        load_key = self.create_load_key()
+
+        claims_params = dict(
+            nonce=nonce,
+            client_id=self.client_id,
+        )
+
+        if claims_cls is None:
+            if "access_token" in token:
+                claims_params["access_token"] = token["access_token"]
+                claims_cls = CodeIDToken
+            else:
+                claims_cls = ImplicitIDToken
+
+        metadata = self.load_server_metadata()
+        if claims_options is None and "issuer" in metadata:
+            claims_options = {"iss": {"values": [metadata["issuer"]]}}
+
+        alg_values = metadata.get("id_token_signing_alg_values_supported")
+        if alg_values:
+            _jwt = JsonWebToken(alg_values)
+        else:
+            _jwt = jwt
+
+        claims = _jwt.decode(
+            token["id_token"],
+            key=load_key,
+            claims_cls=claims_cls,
+            claims_options=claims_options,
+            claims_params=claims_params,
+        )
+        # https://github.com/authlib/authlib/issues/259
+        if claims.get("nonce_supported") is False:
+            claims.params["nonce"] = None
+
+        claims.validate(leeway=leeway)
+        return UserInfo(claims)
+
+    def create_load_key(self):
+        def load_key(header, _):
+            jwk_set = JsonWebKey.import_key_set(self.fetch_jwk_set())
+            try:
+                return jwk_set.find_by_kid(
+                    header.get("kid"), use="sig", alg=header.get("alg")
+                )
+            except ValueError:
+                # re-try with new jwk set
+                jwk_set = JsonWebKey.import_key_set(self.fetch_jwk_set(force=True))
+                return jwk_set.find_by_kid(
+                    header.get("kid"), use="sig", alg=header.get("alg")
+                )
+
+        return load_key

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_client/__init__.py

@@ -0,0 +1,22 @@
+from ..base_client import BaseOAuth
+from ..base_client import OAuthError
+from .apps import DjangoOAuth1App
+from .apps import DjangoOAuth2App
+from .integration import DjangoIntegration
+from .integration import token_update
+
+
+class OAuth(BaseOAuth):
+    oauth1_client_cls = DjangoOAuth1App
+    oauth2_client_cls = DjangoOAuth2App
+    framework_integration_cls = DjangoIntegration
+
+
+__all__ = [
+    "OAuth",
+    "DjangoOAuth1App",
+    "DjangoOAuth2App",
+    "DjangoIntegration",
+    "token_update",
+    "OAuthError",
+]

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_client/apps.py

@@ -0,0 +1,99 @@
+from django.http import HttpResponseRedirect
+
+from ..base_client import BaseApp
+from ..base_client import OAuth1Mixin
+from ..base_client import OAuth2Mixin
+from ..base_client import OAuthError
+from ..base_client import OpenIDMixin
+from ..requests_client import OAuth1Session
+from ..requests_client import OAuth2Session
+
+
+class DjangoAppMixin:
+    def save_authorize_data(self, request, **kwargs):
+        state = kwargs.pop("state", None)
+        if state:
+            self.framework.set_state_data(request.session, state, kwargs)
+        else:
+            raise RuntimeError("Missing state value")
+
+    def authorize_redirect(self, request, redirect_uri=None, **kwargs):
+        """Create a HTTP Redirect for Authorization Endpoint.
+
+        :param request: HTTP request instance from Django view.
+        :param redirect_uri: Callback or redirect URI for authorization.
+        :param kwargs: Extra parameters to include.
+        :return: A HTTP redirect response.
+        """
+        rv = self.create_authorization_url(redirect_uri, **kwargs)
+        self.save_authorize_data(request, redirect_uri=redirect_uri, **rv)
+        return HttpResponseRedirect(rv["url"])
+
+
+class DjangoOAuth1App(DjangoAppMixin, OAuth1Mixin, BaseApp):
+    client_cls = OAuth1Session
+
+    def authorize_access_token(self, request, **kwargs):
+        """Fetch access token in one step.
+
+        :param request: HTTP request instance from Django view.
+        :return: A token dict.
+        """
+        params = request.GET.dict()
+        state = params.get("oauth_token")
+        if not state:
+            raise OAuthError(description='Missing "oauth_token" parameter')
+
+        data = self.framework.get_state_data(request.session, state)
+        if not data:
+            raise OAuthError(description='Missing "request_token" in temporary data')
+
+        params["request_token"] = data["request_token"]
+        params.update(kwargs)
+        self.framework.clear_state_data(request.session, state)
+        return self.fetch_access_token(**params)
+
+
+class DjangoOAuth2App(DjangoAppMixin, OAuth2Mixin, OpenIDMixin, BaseApp):
+    client_cls = OAuth2Session
+
+    def authorize_access_token(self, request, **kwargs):
+        """Fetch access token in one step.
+
+        :param request: HTTP request instance from Django view.
+        :return: A token dict.
+        """
+        if request.method == "GET":
+            error = request.GET.get("error")
+            if error:
+                description = request.GET.get("error_description")
+                raise OAuthError(error=error, description=description)
+            params = {
+                "code": request.GET.get("code"),
+                "state": request.GET.get("state"),
+            }
+        else:
+            params = {
+                "code": request.POST.get("code"),
+                "state": request.POST.get("state"),
+            }
+
+        state_data = self.framework.get_state_data(request.session, params.get("state"))
+        self.framework.clear_state_data(request.session, params.get("state"))
+        params = self._format_state_params(state_data, params)
+
+        claims_options = kwargs.pop("claims_options", None)
+        claims_cls = kwargs.pop("claims_cls", None)
+        leeway = kwargs.pop("leeway", 120)
+        token = self.fetch_access_token(**params, **kwargs)
+
+        if "id_token" in token and "nonce" in state_data:
+            userinfo = self.parse_id_token(
+                token,
+                nonce=state_data["nonce"],
+                claims_options=claims_options,
+                claims_cls=claims_cls,
+                leeway=leeway,
+            )
+            token["userinfo"] = userinfo
+        return token

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_client/integration.py

@@ -0,0 +1,23 @@
+from django.conf import settings
+from django.dispatch import Signal
+
+from ..base_client import FrameworkIntegration
+
+token_update = Signal()
+
+
+class DjangoIntegration(FrameworkIntegration):
+    def update_token(self, token, refresh_token=None, access_token=None):
+        token_update.send(
+            sender=self.__class__,
+            name=self.name,
+            token=token,
+            refresh_token=refresh_token,
+            access_token=access_token,
+        )
+
+    @staticmethod
+    def load_config(oauth, name, params):
+        config = getattr(settings, "AUTHLIB_OAUTH_CLIENTS", None)
+        if config:
+            return config.get(name)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth1/__init__.py

@@ -0,0 +1,5 @@
+from .authorization_server import BaseServer
+from .authorization_server import CacheAuthorizationServer
+from .resource_protector import ResourceProtector
+
+__all__ = ["BaseServer", "CacheAuthorizationServer", "ResourceProtector"]

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth1/authorization_server.py

@@ -0,0 +1,128 @@
+import logging
+
+from django.conf import settings
+from django.core.cache import cache
+from django.http import HttpResponse
+
+from authlib.common.security import generate_token
+from authlib.common.urls import url_encode
+from authlib.oauth1 import AuthorizationServer as _AuthorizationServer
+from authlib.oauth1 import OAuth1Request
+from authlib.oauth1 import TemporaryCredential
+
+from .nonce import exists_nonce_in_cache
+
+log = logging.getLogger(__name__)
+
+
+class BaseServer(_AuthorizationServer):
+    def __init__(self, client_model, token_model, token_generator=None):
+        self.client_model = client_model
+        self.token_model = token_model
+
+        if token_generator is None:
+
+            def token_generator():
+                return {
+                    "oauth_token": generate_token(42),
+                    "oauth_token_secret": generate_token(48),
+                }
+
+        self.token_generator = token_generator
+        self._config = getattr(settings, "AUTHLIB_OAUTH1_PROVIDER", {})
+        self._nonce_expires_in = self._config.get("nonce_expires_in", 86400)
+        methods = self._config.get("signature_methods")
+        if methods:
+            self.SUPPORTED_SIGNATURE_METHODS = methods
+
+    def get_client_by_id(self, client_id):
+        try:
+            return self.client_model.objects.get(client_id=client_id)
+        except self.client_model.DoesNotExist:
+            return None
+
+    def exists_nonce(self, nonce, request):
+        return exists_nonce_in_cache(nonce, request, self._nonce_expires_in)
+
+    def create_token_credential(self, request):
+        temporary_credential = request.credential
+        token = self.token_generator()
+        item = self.token_model(
+            oauth_token=token["oauth_token"],
+            oauth_token_secret=token["oauth_token_secret"],
+            user_id=temporary_credential.get_user_id(),
+            client_id=temporary_credential.get_client_id(),
+        )
+        item.save()
+        return item
+
+    def check_authorization_request(self, request):
+        req = self.create_oauth1_request(request)
+        self.validate_authorization_request(req)
+        return req
+
+    def create_oauth1_request(self, request):
+        if request.method == "POST":
+            body = request.POST.dict()
+        else:
+            body = None
+        url = request.build_absolute_uri()
+        return OAuth1Request(request.method, url, body, request.headers)
+
+    def handle_response(self, status_code, payload, headers):
+        resp = HttpResponse(url_encode(payload), status=status_code)
+        for k, v in headers:
+            resp[k] = v
+        return resp
+
+
+class CacheAuthorizationServer(BaseServer):
+    def __init__(self, client_model, token_model, token_generator=None):
+        super().__init__(client_model, token_model, token_generator)
+        self._temporary_expires_in = self._config.get(
+            "temporary_credential_expires_in", 86400
+        )
+        self._temporary_credential_key_prefix = self._config.get(
+            "temporary_credential_key_prefix", "temporary_credential:"
+        )
+
+    def create_temporary_credential(self, request):
+        key_prefix = self._temporary_credential_key_prefix
+        token = self.token_generator()
+
+        client_id = request.client_id
+        redirect_uri = request.redirect_uri
+        key = key_prefix + token["oauth_token"]
+        token["client_id"] = client_id
+        if redirect_uri:
+            token["oauth_callback"] = redirect_uri
+
+        cache.set(key, token, timeout=self._temporary_expires_in)
+        return TemporaryCredential(token)
+
+    def get_temporary_credential(self, request):
+        if not request.token:
+            return None
+
+        key_prefix = self._temporary_credential_key_prefix
+        key = key_prefix + request.token
+        value = cache.get(key)
+        if value:
+            return TemporaryCredential(value)
+
+    def delete_temporary_credential(self, request):
+        if request.token:
+            key_prefix = self._temporary_credential_key_prefix
+            key = key_prefix + request.token
+            cache.delete(key)
+
+    def create_authorization_verifier(self, request):
+        key_prefix = self._temporary_credential_key_prefix
+        verifier = generate_token(36)
+        credential = request.credential
+        user = request.user
+        key = key_prefix + credential.get_oauth_token()
+        credential["oauth_verifier"] = verifier
+        credential["user_id"] = user.pk
+        cache.set(key, credential, timeout=self._temporary_expires_in)
+        return verifier

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth1/nonce.py

@@ -0,0 +1,15 @@
+from django.core.cache import cache
+
+
+def exists_nonce_in_cache(nonce, request, timeout):
+    key_prefix = "nonce:"
+    timestamp = request.timestamp
+    client_id = request.client_id
+    token = request.token
+    key = f"{key_prefix}{nonce}-{timestamp}-{client_id}"
+    if token:
+        key = f"{key}-{token}"
+
+    rv = bool(cache.get(key))
+    cache.set(key, 1, timeout=timeout)
+    return rv

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth1/resource_protector.py

@@ -0,0 +1,68 @@
+import functools
+
+from django.conf import settings
+from django.http import JsonResponse
+
+from authlib.oauth1 import ResourceProtector as _ResourceProtector
+from authlib.oauth1.errors import OAuth1Error
+
+from .nonce import exists_nonce_in_cache
+
+
+class ResourceProtector(_ResourceProtector):
+    def __init__(self, client_model, token_model):
+        self.client_model = client_model
+        self.token_model = token_model
+
+        config = getattr(settings, "AUTHLIB_OAUTH1_PROVIDER", {})
+        methods = config.get("signature_methods", [])
+        if methods and isinstance(methods, (list, tuple)):
+            self.SUPPORTED_SIGNATURE_METHODS = methods
+
+        self._nonce_expires_in = config.get("nonce_expires_in", 86400)
+
+    def get_client_by_id(self, client_id):
+        try:
+            return self.client_model.objects.get(client_id=client_id)
+        except self.client_model.DoesNotExist:
+            return None
+
+    def get_token_credential(self, request):
+        try:
+            return self.token_model.objects.get(
+                client_id=request.client_id, oauth_token=request.token
+            )
+        except self.token_model.DoesNotExist:
+            return None
+
+    def exists_nonce(self, nonce, request):
+        return exists_nonce_in_cache(nonce, request, self._nonce_expires_in)
+
+    def acquire_credential(self, request):
+        if request.method in ["POST", "PUT"]:
+            body = request.POST.dict()
+        else:
+            body = None
+
+        url = request.build_absolute_uri()
+        req = self.validate_request(request.method, url, body, request.headers)
+        return req.credential
+
+    def __call__(self, realm=None):
+        def wrapper(f):
+            @functools.wraps(f)
+            def decorated(request, *args, **kwargs):
+                try:
+                    credential = self.acquire_credential(request)
+                    request.oauth1_credential = credential
+                except OAuth1Error as error:
+                    body = dict(error.get_body())
+                    resp = JsonResponse(body, status=error.status_code)
+                    resp["Cache-Control"] = "no-store"
+                    resp["Pragma"] = "no-cache"
+                    return resp
+                return f(request, *args, **kwargs)
+
+            return decorated
+
+        return wrapper

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth2/__init__.py

@@ -0,0 +1,9 @@
+# flake8: noqa
+
+from .authorization_server import AuthorizationServer
+from .endpoints import RevocationEndpoint
+from .resource_protector import BearerTokenValidator
+from .resource_protector import ResourceProtector
+from .signals import client_authenticated
+from .signals import token_authenticated
+from .signals import token_revoked

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth2/authorization_server.py

@@ -0,0 +1,122 @@
+from django.conf import settings
+from django.http import HttpResponse
+from django.utils.module_loading import import_string
+
+from authlib.common.encoding import json_dumps
+from authlib.common.security import generate_token as _generate_token
+from authlib.oauth2 import AuthorizationServer as _AuthorizationServer
+from authlib.oauth2.rfc6750 import BearerTokenGenerator
+
+from .requests import DjangoJsonRequest
+from .requests import DjangoOAuth2Request
+from .signals import client_authenticated
+from .signals import token_revoked
+
+
+class AuthorizationServer(_AuthorizationServer):
+    """Django implementation of :class:`authlib.oauth2.rfc6749.AuthorizationServer`.
+    Initialize it with client model and token model::
+
+        from authlib.integrations.django_oauth2 import AuthorizationServer
+        from your_project.models import OAuth2Client, OAuth2Token
+
+        server = AuthorizationServer(OAuth2Client, OAuth2Token)
+    """
+
+    def __init__(self, client_model, token_model):
+        super().__init__()
+        self.client_model = client_model
+        self.token_model = token_model
+        self.load_config(getattr(settings, "AUTHLIB_OAUTH2_PROVIDER", {}))
+
+    def load_config(self, config):
+        self.config = config
+        scopes_supported = self.config.get("scopes_supported")
+        self.scopes_supported = scopes_supported
+        # add default token generator
+        self.register_token_generator("default", self.create_bearer_token_generator())
+
+    def query_client(self, client_id):
+        """Default method for ``AuthorizationServer.query_client``. Developers MAY
+        rewrite this function to meet their own needs.
+        """
+        try:
+            return self.client_model.objects.get(client_id=client_id)
+        except self.client_model.DoesNotExist:
+            return None
+
+    def save_token(self, token, request):
+        """Default method for ``AuthorizationServer.save_token``. Developers MAY
+        rewrite this function to meet their own needs.
+        """
+        client = request.client
+        if request.user:
+            user_id = request.user.pk
+        else:
+            user_id = client.user_id
+        item = self.token_model(client_id=client.client_id, user_id=user_id, **token)
+        item.save()
+        return item
+
+    def create_oauth2_request(self, request):
+        return DjangoOAuth2Request(request)
+
+    def create_json_request(self, request):
+        return DjangoJsonRequest(request)
+
+    def handle_response(self, status_code, payload, headers):
+        if isinstance(payload, dict):
+            payload = json_dumps(payload)
+        resp = HttpResponse(payload, status=status_code)
+        for k, v in headers:
+            resp[k] = v
+        return resp
+
+    def send_signal(self, name, *args, **kwargs):
+        if name == "after_authenticate_client":
+            client_authenticated.send(*args, sender=self.__class__, **kwargs)
+        elif name == "after_revoke_token":
+            token_revoked.send(*args, sender=self.__class__, **kwargs)
+
+    def create_bearer_token_generator(self):
+        """Default method to create BearerToken generator."""
+        conf = self.config.get("access_token_generator", True)
+        access_token_generator = create_token_generator(conf, 42)
+
+        conf = self.config.get("refresh_token_generator", False)
+        refresh_token_generator = create_token_generator(conf, 48)
+
+        conf = self.config.get("token_expires_in")
+        expires_generator = create_token_expires_in_generator(conf)
+
+        return BearerTokenGenerator(
+            access_token_generator=access_token_generator,
+            refresh_token_generator=refresh_token_generator,
+            expires_generator=expires_generator,
+        )
+
+
+def create_token_generator(token_generator_conf, length=42):
+    if callable(token_generator_conf):
+        return token_generator_conf
+
+    if isinstance(token_generator_conf, str):
+        return import_string(token_generator_conf)
+    elif token_generator_conf is True:
+
+        def token_generator(*args, **kwargs):
+            return _generate_token(length)
+
+        return token_generator
+
+
+def create_token_expires_in_generator(expires_in_conf=None):
+    data = {}
+    data.update(BearerTokenGenerator.GRANT_TYPES_EXPIRES_IN)
+    if expires_in_conf:
+        data.update(expires_in_conf)
+
+    def expires_in(client, grant_type):
+        return data.get(grant_type, BearerTokenGenerator.DEFAULT_EXPIRES_IN)
+
+    return expires_in

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth2/endpoints.py

@@ -0,0 +1,56 @@
+from authlib.oauth2.rfc7009 import RevocationEndpoint as _RevocationEndpoint
+
+
+class RevocationEndpoint(_RevocationEndpoint):
+    """The revocation endpoint for OAuth authorization servers allows clients
+    to notify the authorization server that a previously obtained refresh or
+    access token is no longer needed.
+
+    Register it into authorization server, and create token endpoint response
+    for token revocation::
+
+        from django.views.decorators.http import require_http_methods
+
+        # see register into authorization server instance
+        server.register_endpoint(RevocationEndpoint)
+
+
+        @require_http_methods(["POST"])
+        def revoke_token(request):
+            return server.create_endpoint_response(
+                RevocationEndpoint.ENDPOINT_NAME, request
+            )
+    """
+
+    def query_token(self, token, token_type_hint):
+        """Query requested token from database."""
+        token_model = self.server.token_model
+        if token_type_hint == "access_token":
+            rv = _query_access_token(token_model, token)
+        elif token_type_hint == "refresh_token":
+            rv = _query_refresh_token(token_model, token)
+        else:
+            rv = _query_access_token(token_model, token)
+            if not rv:
+                rv = _query_refresh_token(token_model, token)
+
+        return rv
+
+    def revoke_token(self, token, request):
+        """Mark the give token as revoked."""
+        token.revoked = True
+        token.save()
+
+
+def _query_access_token(token_model, token):
+    try:
+        return token_model.objects.get(access_token=token)
+    except token_model.DoesNotExist:
+        return None
+
+
+def _query_refresh_token(token_model, token):
+    try:
+        return token_model.objects.get(refresh_token=token)
+    except token_model.DoesNotExist:
+        return None

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth2/requests.py

@@ -0,0 +1,65 @@
+from collections import defaultdict
+
+from django.http import HttpRequest
+from django.utils.functional import cached_property
+
+from authlib.common.encoding import json_loads
+from authlib.oauth2.rfc6749 import JsonPayload
+from authlib.oauth2.rfc6749 import JsonRequest
+from authlib.oauth2.rfc6749 import OAuth2Payload
+from authlib.oauth2.rfc6749 import OAuth2Request
+
+
+class DjangoOAuth2Payload(OAuth2Payload):
+    def __init__(self, request: HttpRequest):
+        self._request = request
+
+    @cached_property
+    def data(self):
+        data = {}
+        data.update(self._request.GET.dict())
+        data.update(self._request.POST.dict())
+        return data
+
+    @cached_property
+    def datalist(self):
+        values = defaultdict(list)
+        for k in self._request.GET:
+            values[k].extend(self._request.GET.getlist(k))
+        for k in self._request.POST:
+            values[k].extend(self._request.POST.getlist(k))
+        return values
+
+
+class DjangoOAuth2Request(OAuth2Request):
+    def __init__(self, request: HttpRequest):
+        super().__init__(
+            method=request.method,
+            uri=request.build_absolute_uri(),
+            headers=request.headers,
+        )
+        self.payload = DjangoOAuth2Payload(request)
+        self._request = request
+
+    @property
+    def args(self):
+        return self._request.GET
+
+    @property
+    def form(self):
+        return self._request.POST
+
+
+class DjangoJsonPayload(JsonPayload):
+    def __init__(self, request: HttpRequest):
+        self._request = request
+
+    @cached_property
+    def data(self):
+        return json_loads(self._request.body)
+
+
+class DjangoJsonRequest(JsonRequest):
+    def __init__(self, request: HttpRequest):
+        super().__init__(request.method, request.build_absolute_uri(), request.headers)
+        self.payload = DjangoJsonPayload(request)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth2/resource_protector.py

@@ -0,0 +1,75 @@
+import functools
+
+from django.http import JsonResponse
+
+from authlib.oauth2 import OAuth2Error
+from authlib.oauth2 import ResourceProtector as _ResourceProtector
+from authlib.oauth2.rfc6749 import MissingAuthorizationError
+from authlib.oauth2.rfc6750 import BearerTokenValidator as _BearerTokenValidator
+
+from .requests import DjangoJsonRequest
+from .signals import token_authenticated
+
+
+class ResourceProtector(_ResourceProtector):
+    def acquire_token(self, request, scopes=None, **kwargs):
+        """A method to acquire current valid token with the given scope.
+
+        :param request: Django HTTP request instance
+        :param scopes: a list of scope values
+        :return: token object
+        """
+        req = DjangoJsonRequest(request)
+        # backward compatibility
+        kwargs["scopes"] = scopes
+        for claim in kwargs:
+            if isinstance(kwargs[claim], str):
+                kwargs[claim] = [kwargs[claim]]
+        token = self.validate_request(request=req, **kwargs)
+        token_authenticated.send(sender=self.__class__, token=token)
+        return token
+
+    def __call__(self, scopes=None, optional=False, **kwargs):
+        claims = kwargs
+        # backward compatibility
+        claims["scopes"] = scopes
+
+        def wrapper(f):
+            @functools.wraps(f)
+            def decorated(request, *args, **kwargs):
+                try:
+                    token = self.acquire_token(request, **claims)
+                    request.oauth_token = token
+                except MissingAuthorizationError as error:
+                    if optional:
+                        request.oauth_token = None
+                        return f(request, *args, **kwargs)
+                    return return_error_response(error)
+                except OAuth2Error as error:
+                    return return_error_response(error)
+                return f(request, *args, **kwargs)
+
+            return decorated
+
+        return wrapper
+
+
+class BearerTokenValidator(_BearerTokenValidator):
+    def __init__(self, token_model, realm=None, **extra_attributes):
+        self.token_model = token_model
+        super().__init__(realm, **extra_attributes)
+
+    def authenticate_token(self, token_string):
+        try:
+            return self.token_model.objects.get(access_token=token_string)
+        except self.token_model.DoesNotExist:
+            return None
+
+
+def return_error_response(error):
+    body = dict(error.get_body())
+    resp = JsonResponse(body, status=error.status_code)
+    headers = error.get_headers()
+    for k, v in headers:
+        resp[k] = v
+    return resp

Backend/venv/lib/python3.12/site-packages/authlib/integrations/django_oauth2/signals.py

@@ -0,0 +1,10 @@
+from django.dispatch import Signal
+
+#: signal when client is authenticated
+client_authenticated = Signal()
+
+#: signal when token is revoked
+token_revoked = Signal()
+
+#: signal when token is authenticated
+token_authenticated = Signal()

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_client/__init__.py

@@ -0,0 +1,59 @@
+from werkzeug.local import LocalProxy
+
+from ..base_client import BaseOAuth
+from ..base_client import OAuthError
+from .apps import FlaskOAuth1App
+from .apps import FlaskOAuth2App
+from .integration import FlaskIntegration
+from .integration import token_update
+
+
+class OAuth(BaseOAuth):
+    oauth1_client_cls = FlaskOAuth1App
+    oauth2_client_cls = FlaskOAuth2App
+    framework_integration_cls = FlaskIntegration
+
+    def __init__(self, app=None, cache=None, fetch_token=None, update_token=None):
+        super().__init__(
+            cache=cache, fetch_token=fetch_token, update_token=update_token
+        )
+        self.app = app
+        if app:
+            self.init_app(app)
+
+    def init_app(self, app, cache=None, fetch_token=None, update_token=None):
+        """Initialize lazy for Flask app. This is usually used for Flask application
+        factory pattern.
+        """
+        self.app = app
+        if cache is not None:
+            self.cache = cache
+
+        if fetch_token:
+            self.fetch_token = fetch_token
+        if update_token:
+            self.update_token = update_token
+
+        app.extensions = getattr(app, "extensions", {})
+        app.extensions["authlib.integrations.flask_client"] = self
+
+    def create_client(self, name):
+        if not self.app:
+            raise RuntimeError("OAuth is not init with Flask app.")
+        return super().create_client(name)
+
+    def register(self, name, overwrite=False, **kwargs):
+        self._registry[name] = (overwrite, kwargs)
+        if self.app:
+            return self.create_client(name)
+        return LocalProxy(lambda: self.create_client(name))
+
+
+__all__ = [
+    "OAuth",
+    "FlaskIntegration",
+    "FlaskOAuth1App",
+    "FlaskOAuth2App",
+    "token_update",
+    "OAuthError",
+]

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_client/apps.py

@@ -0,0 +1,122 @@
+from flask import g
+from flask import redirect
+from flask import request
+from flask import session
+
+from ..base_client import BaseApp
+from ..base_client import OAuth1Mixin
+from ..base_client import OAuth2Mixin
+from ..base_client import OAuthError
+from ..base_client import OpenIDMixin
+from ..requests_client import OAuth1Session
+from ..requests_client import OAuth2Session
+
+
+class FlaskAppMixin:
+    @property
+    def token(self):
+        attr = f"_oauth_token_{self.name}"
+        token = g.get(attr)
+        if token:
+            return token
+        if self._fetch_token:
+            token = self._fetch_token()
+            self.token = token
+            return token
+
+    @token.setter
+    def token(self, token):
+        attr = f"_oauth_token_{self.name}"
+        setattr(g, attr, token)
+
+    def _get_requested_token(self, *args, **kwargs):
+        return self.token
+
+    def save_authorize_data(self, **kwargs):
+        state = kwargs.pop("state", None)
+        if state:
+            self.framework.set_state_data(session, state, kwargs)
+        else:
+            raise RuntimeError("Missing state value")
+
+    def authorize_redirect(self, redirect_uri=None, **kwargs):
+        """Create a HTTP Redirect for Authorization Endpoint.
+
+        :param redirect_uri: Callback or redirect URI for authorization.
+        :param kwargs: Extra parameters to include.
+        :return: A HTTP redirect response.
+        """
+        rv = self.create_authorization_url(redirect_uri, **kwargs)
+        self.save_authorize_data(redirect_uri=redirect_uri, **rv)
+        return redirect(rv["url"])
+
+
+class FlaskOAuth1App(FlaskAppMixin, OAuth1Mixin, BaseApp):
+    client_cls = OAuth1Session
+
+    def authorize_access_token(self, **kwargs):
+        """Fetch access token in one step.
+
+        :return: A token dict.
+        """
+        params = request.args.to_dict(flat=True)
+        state = params.get("oauth_token")
+        if not state:
+            raise OAuthError(description='Missing "oauth_token" parameter')
+
+        data = self.framework.get_state_data(session, state)
+        if not data:
+            raise OAuthError(description='Missing "request_token" in temporary data')
+
+        params["request_token"] = data["request_token"]
+        params.update(kwargs)
+        self.framework.clear_state_data(session, state)
+        token = self.fetch_access_token(**params)
+        self.token = token
+        return token
+
+
+class FlaskOAuth2App(FlaskAppMixin, OAuth2Mixin, OpenIDMixin, BaseApp):
+    client_cls = OAuth2Session
+
+    def authorize_access_token(self, **kwargs):
+        """Fetch access token in one step.
+
+        :return: A token dict.
+        """
+        if request.method == "GET":
+            error = request.args.get("error")
+            if error:
+                description = request.args.get("error_description")
+                raise OAuthError(error=error, description=description)
+
+            params = {
+                "code": request.args.get("code"),
+                "state": request.args.get("state"),
+            }
+        else:
+            params = {
+                "code": request.form.get("code"),
+                "state": request.form.get("state"),
+            }
+
+        state_data = self.framework.get_state_data(session, params.get("state"))
+        self.framework.clear_state_data(session, params.get("state"))
+        params = self._format_state_params(state_data, params)
+
+        claims_options = kwargs.pop("claims_options", None)
+        claims_cls = kwargs.pop("claims_cls", None)
+        leeway = kwargs.pop("leeway", 120)
+        token = self.fetch_access_token(**params, **kwargs)
+        self.token = token
+
+        if "id_token" in token and "nonce" in state_data:
+            userinfo = self.parse_id_token(
+                token,
+                nonce=state_data["nonce"],
+                claims_options=claims_options,
+                claims_cls=claims_cls,
+                leeway=leeway,
+            )
+            token["userinfo"] = userinfo
+        return token

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_client/integration.py

@@ -0,0 +1,29 @@
+from flask import current_app
+from flask.signals import Namespace
+
+from ..base_client import FrameworkIntegration
+
+_signal = Namespace()
+#: signal when token is updated
+token_update = _signal.signal("token_update")
+
+
+class FlaskIntegration(FrameworkIntegration):
+    def update_token(self, token, refresh_token=None, access_token=None):
+        token_update.send(
+            current_app,
+            name=self.name,
+            token=token,
+            refresh_token=refresh_token,
+            access_token=access_token,
+        )
+
+    @staticmethod
+    def load_config(oauth, name, params):
+        rv = {}
+        for k in params:
+            conf_key = f"{name}_{k}".upper()
+            v = oauth.app.config.get(conf_key, None)
+            if v is not None:
+                rv[k] = v
+        return rv

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth1/__init__.py

@@ -0,0 +1,8 @@
+# flake8: noqa
+
+from .authorization_server import AuthorizationServer
+from .cache import create_exists_nonce_func
+from .cache import register_nonce_hooks
+from .cache import register_temporary_credential_hooks
+from .resource_protector import ResourceProtector
+from .resource_protector import current_credential

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth1/authorization_server.py

@@ -0,0 +1,168 @@
+import logging
+
+from flask import Response
+from flask import request as flask_req
+from werkzeug.utils import import_string
+
+from authlib.common.security import generate_token
+from authlib.common.urls import url_encode
+from authlib.oauth1 import AuthorizationServer as _AuthorizationServer
+from authlib.oauth1 import OAuth1Request
+
+log = logging.getLogger(__name__)
+
+
+class AuthorizationServer(_AuthorizationServer):
+    """Flask implementation of :class:`authlib.rfc5849.AuthorizationServer`.
+    Initialize it with Flask app instance, client model class and cache::
+
+        server = AuthorizationServer(app=app, query_client=query_client)
+        # or initialize lazily
+        server = AuthorizationServer()
+        server.init_app(app, query_client=query_client)
+
+    :param app: A Flask app instance
+    :param query_client: A function to get client by client_id. The client
+        model class MUST implement the methods described by
+        :class:`~authlib.oauth1.rfc5849.ClientMixin`.
+    :param token_generator: A function to generate token
+    """
+
+    def __init__(self, app=None, query_client=None, token_generator=None):
+        self.app = app
+        self.query_client = query_client
+        self.token_generator = token_generator
+
+        self._hooks = {
+            "exists_nonce": None,
+            "create_temporary_credential": None,
+            "get_temporary_credential": None,
+            "delete_temporary_credential": None,
+            "create_authorization_verifier": None,
+            "create_token_credential": None,
+        }
+        if app is not None:
+            self.init_app(app)
+
+    def init_app(self, app, query_client=None, token_generator=None):
+        if query_client is not None:
+            self.query_client = query_client
+        if token_generator is not None:
+            self.token_generator = token_generator
+
+        if self.token_generator is None:
+            self.token_generator = self.create_token_generator(app)
+
+        methods = app.config.get("OAUTH1_SUPPORTED_SIGNATURE_METHODS")
+        if methods and isinstance(methods, (list, tuple)):
+            self.SUPPORTED_SIGNATURE_METHODS = methods
+
+        self.app = app
+
+    def register_hook(self, name, func):
+        if name not in self._hooks:
+            raise ValueError('Invalid "name" of hook')
+        self._hooks[name] = func
+
+    def create_token_generator(self, app):
+        token_generator = app.config.get("OAUTH1_TOKEN_GENERATOR")
+
+        if isinstance(token_generator, str):
+            token_generator = import_string(token_generator)
+        else:
+            length = app.config.get("OAUTH1_TOKEN_LENGTH", 42)
+
+            def token_generator():
+                return generate_token(length)
+
+        secret_generator = app.config.get("OAUTH1_TOKEN_SECRET_GENERATOR")
+        if isinstance(secret_generator, str):
+            secret_generator = import_string(secret_generator)
+        else:
+            length = app.config.get("OAUTH1_TOKEN_SECRET_LENGTH", 48)
+
+            def secret_generator():
+                return generate_token(length)
+
+        def create_token():
+            return {
+                "oauth_token": token_generator(),
+                "oauth_token_secret": secret_generator(),
+            }
+
+        return create_token
+
+    def get_client_by_id(self, client_id):
+        return self.query_client(client_id)
+
+    def exists_nonce(self, nonce, request):
+        func = self._hooks["exists_nonce"]
+        if callable(func):
+            timestamp = request.timestamp
+            client_id = request.client_id
+            token = request.token
+            return func(nonce, timestamp, client_id, token)
+
+        raise RuntimeError('"exists_nonce" hook is required.')
+
+    def create_temporary_credential(self, request):
+        func = self._hooks["create_temporary_credential"]
+        if callable(func):
+            token = self.token_generator()
+            return func(token, request.client_id, request.redirect_uri)
+        raise RuntimeError('"create_temporary_credential" hook is required.')
+
+    def get_temporary_credential(self, request):
+        func = self._hooks["get_temporary_credential"]
+        if callable(func):
+            return func(request.token)
+
+        raise RuntimeError('"get_temporary_credential" hook is required.')
+
+    def delete_temporary_credential(self, request):
+        func = self._hooks["delete_temporary_credential"]
+        if callable(func):
+            return func(request.token)
+
+        raise RuntimeError('"delete_temporary_credential" hook is required.')
+
+    def create_authorization_verifier(self, request):
+        func = self._hooks["create_authorization_verifier"]
+        if callable(func):
+            verifier = generate_token(36)
+            func(request.credential, request.user, verifier)
+            return verifier
+
+        raise RuntimeError('"create_authorization_verifier" hook is required.')
+
+    def create_token_credential(self, request):
+        func = self._hooks["create_token_credential"]
+        if callable(func):
+            temporary_credential = request.credential
+            token = self.token_generator()
+            return func(token, temporary_credential)
+
+        raise RuntimeError('"create_token_credential" hook is required.')
+
+    def check_authorization_request(self):
+        req = self.create_oauth1_request(None)
+        self.validate_authorization_request(req)
+        return req
+
+    def create_authorization_response(self, request=None, grant_user=None):
+        return super().create_authorization_response(request, grant_user)
+
+    def create_token_response(self, request=None):
+        return super().create_token_response(request)
+
+    def create_oauth1_request(self, request):
+        if request is None:
+            request = flask_req
+        if request.method in ("POST", "PUT"):
+            body = request.form.to_dict(flat=True)
+        else:
+            body = None
+        return OAuth1Request(request.method, request.url, body, request.headers)
+
+    def handle_response(self, status_code, payload, headers):
+        return Response(url_encode(payload), status=status_code, headers=headers)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth1/cache.py

@@ -0,0 +1,88 @@
+from authlib.oauth1 import TemporaryCredential
+
+
+def register_temporary_credential_hooks(
+    authorization_server, cache, key_prefix="temporary_credential:"
+):
+    """Register temporary credential related hooks to authorization server.
+
+    :param authorization_server: AuthorizationServer instance
+    :param cache: Cache instance
+    :param key_prefix: key prefix for temporary credential
+    """
+
+    def create_temporary_credential(token, client_id, redirect_uri):
+        key = key_prefix + token["oauth_token"]
+        token["client_id"] = client_id
+        if redirect_uri:
+            token["oauth_callback"] = redirect_uri
+
+        cache.set(key, token, timeout=86400)  # cache for one day
+        return TemporaryCredential(token)
+
+    def get_temporary_credential(oauth_token):
+        if not oauth_token:
+            return None
+        key = key_prefix + oauth_token
+        value = cache.get(key)
+        if value:
+            return TemporaryCredential(value)
+
+    def delete_temporary_credential(oauth_token):
+        if oauth_token:
+            key = key_prefix + oauth_token
+            cache.delete(key)
+
+    def create_authorization_verifier(credential, grant_user, verifier):
+        key = key_prefix + credential.get_oauth_token()
+        credential["oauth_verifier"] = verifier
+        credential["user_id"] = grant_user.get_user_id()
+        cache.set(key, credential, timeout=86400)
+        return credential
+
+    authorization_server.register_hook(
+        "create_temporary_credential", create_temporary_credential
+    )
+    authorization_server.register_hook(
+        "get_temporary_credential", get_temporary_credential
+    )
+    authorization_server.register_hook(
+        "delete_temporary_credential", delete_temporary_credential
+    )
+    authorization_server.register_hook(
+        "create_authorization_verifier", create_authorization_verifier
+    )
+
+
+def create_exists_nonce_func(cache, key_prefix="nonce:", expires=86400):
+    """Create an ``exists_nonce`` function that can be used in hooks and
+    resource protector.
+
+    :param cache: Cache instance
+    :param key_prefix: key prefix for temporary credential
+    :param expires: Expire time for nonce
+    """
+
+    def exists_nonce(nonce, timestamp, client_id, oauth_token):
+        key = f"{key_prefix}{nonce}-{timestamp}-{client_id}"
+        if oauth_token:
+            key = f"{key}-{oauth_token}"
+        rv = cache.has(key)
+        cache.set(key, 1, timeout=expires)
+        return rv
+
+    return exists_nonce
+
+
+def register_nonce_hooks(
+    authorization_server, cache, key_prefix="nonce:", expires=86400
+):
+    """Register nonce related hooks to authorization server.
+
+    :param authorization_server: AuthorizationServer instance
+    :param cache: Cache instance
+    :param key_prefix: key prefix for temporary credential
+    :param expires: Expire time for nonce
+    """
+    exists_nonce = create_exists_nonce_func(cache, key_prefix, expires)
+    authorization_server.register_hook("exists_nonce", exists_nonce)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth1/resource_protector.py

@@ -0,0 +1,121 @@
+import functools
+
+from flask import Response
+from flask import g
+from flask import json
+from flask import request as _req
+from werkzeug.local import LocalProxy
+
+from authlib.consts import default_json_headers
+from authlib.oauth1 import ResourceProtector as _ResourceProtector
+from authlib.oauth1.errors import OAuth1Error
+
+
+class ResourceProtector(_ResourceProtector):
+    """A protecting method for resource servers. Initialize a resource
+    protector with the these method:
+
+    1. query_client
+    2. query_token,
+    3. exists_nonce
+
+    Usually, a ``query_client`` method would look like (if using SQLAlchemy)::
+
+        def query_client(client_id):
+            return Client.query.filter_by(client_id=client_id).first()
+
+    A ``query_token`` method accept two parameters, ``client_id`` and ``oauth_token``::
+
+        def query_token(client_id, oauth_token):
+            return Token.query.filter_by(
+                client_id=client_id, oauth_token=oauth_token
+            ).first()
+
+    And for ``exists_nonce``, if using cache, we have a built-in hook to create this method::
+
+        from authlib.integrations.flask_oauth1 import create_exists_nonce_func
+
+        exists_nonce = create_exists_nonce_func(cache)
+
+    Then initialize the resource protector with those methods::
+
+        require_oauth = ResourceProtector(
+            app,
+            query_client=query_client,
+            query_token=query_token,
+            exists_nonce=exists_nonce,
+        )
+    """
+
+    def __init__(
+        self, app=None, query_client=None, query_token=None, exists_nonce=None
+    ):
+        self.query_client = query_client
+        self.query_token = query_token
+        self._exists_nonce = exists_nonce
+
+        self.app = app
+        if app:
+            self.init_app(app)
+
+    def init_app(self, app, query_client=None, query_token=None, exists_nonce=None):
+        if query_client is not None:
+            self.query_client = query_client
+        if query_token is not None:
+            self.query_token = query_token
+        if exists_nonce is not None:
+            self._exists_nonce = exists_nonce
+
+        methods = app.config.get("OAUTH1_SUPPORTED_SIGNATURE_METHODS")
+        if methods and isinstance(methods, (list, tuple)):
+            self.SUPPORTED_SIGNATURE_METHODS = methods
+
+        self.app = app
+
+    def get_client_by_id(self, client_id):
+        return self.query_client(client_id)
+
+    def get_token_credential(self, request):
+        return self.query_token(request.client_id, request.token)
+
+    def exists_nonce(self, nonce, request):
+        if not self._exists_nonce:
+            raise RuntimeError('"exists_nonce" function is required.')
+
+        timestamp = request.timestamp
+        client_id = request.client_id
+        token = request.token
+        return self._exists_nonce(nonce, timestamp, client_id, token)
+
+    def acquire_credential(self):
+        req = self.validate_request(
+            _req.method, _req.url, _req.form.to_dict(flat=True), _req.headers
+        )
+        g.authlib_server_oauth1_credential = req.credential
+        return req.credential
+
+    def __call__(self, scope=None):
+        def wrapper(f):
+            @functools.wraps(f)
+            def decorated(*args, **kwargs):
+                try:
+                    self.acquire_credential()
+                except OAuth1Error as error:
+                    body = dict(error.get_body())
+                    return Response(
+                        json.dumps(body),
+                        status=error.status_code,
+                        headers=default_json_headers,
+                    )
+                return f(*args, **kwargs)
+
+            return decorated
+
+        return wrapper
+
+
+def _get_current_credential():
+    return g.get("authlib_server_oauth1_credential")
+
+
+current_credential = LocalProxy(_get_current_credential)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth2/__init__.py

@@ -0,0 +1,8 @@
+# flake8: noqa
+
+from .authorization_server import AuthorizationServer
+from .resource_protector import ResourceProtector
+from .resource_protector import current_token
+from .signals import client_authenticated
+from .signals import token_authenticated
+from .signals import token_revoked

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth2/authorization_server.py

@@ -0,0 +1,165 @@
+from flask import Response
+from flask import json
+from flask import request as flask_req
+from werkzeug.utils import import_string
+
+from authlib.common.security import generate_token
+from authlib.oauth2 import AuthorizationServer as _AuthorizationServer
+from authlib.oauth2.rfc6750 import BearerTokenGenerator
+
+from .requests import FlaskJsonRequest
+from .requests import FlaskOAuth2Request
+from .signals import client_authenticated
+from .signals import token_revoked
+
+
+class AuthorizationServer(_AuthorizationServer):
+    """Flask implementation of :class:`authlib.oauth2.rfc6749.AuthorizationServer`.
+    Initialize it with ``query_client``, ``save_token`` methods and Flask
+    app instance::
+
+        def query_client(client_id):
+            return Client.query.filter_by(client_id=client_id).first()
+
+
+        def save_token(token, request):
+            if request.user:
+                user_id = request.user.id
+            else:
+                user_id = None
+            client = request.client
+            tok = Token(client_id=client.client_id, user_id=user.id, **token)
+            db.session.add(tok)
+            db.session.commit()
+
+
+        server = AuthorizationServer(app, query_client, save_token)
+        # or initialize lazily
+        server = AuthorizationServer()
+        server.init_app(app, query_client, save_token)
+    """
+
+    def __init__(self, app=None, query_client=None, save_token=None):
+        super().__init__()
+        self._query_client = query_client
+        self._save_token = save_token
+        self._error_uris = None
+        if app is not None:
+            self.init_app(app)
+
+    def init_app(self, app, query_client=None, save_token=None):
+        """Initialize later with Flask app instance."""
+        if query_client is not None:
+            self._query_client = query_client
+        if save_token is not None:
+            self._save_token = save_token
+        self.load_config(app.config)
+
+    def load_config(self, config):
+        self.register_token_generator(
+            "default", self.create_bearer_token_generator(config)
+        )
+        self.scopes_supported = config.get("OAUTH2_SCOPES_SUPPORTED")
+        self._error_uris = config.get("OAUTH2_ERROR_URIS")
+
+    def query_client(self, client_id):
+        return self._query_client(client_id)
+
+    def save_token(self, token, request):
+        return self._save_token(token, request)
+
+    def get_error_uri(self, request, error):
+        if self._error_uris:
+            uris = dict(self._error_uris)
+            return uris.get(error.error)
+
+    def create_oauth2_request(self, request):
+        return FlaskOAuth2Request(flask_req)
+
+    def create_json_request(self, request):
+        return FlaskJsonRequest(flask_req)
+
+    def handle_response(self, status_code, payload, headers):
+        if isinstance(payload, dict):
+            payload = json.dumps(payload)
+        return Response(payload, status=status_code, headers=headers)
+
+    def send_signal(self, name, *args, **kwargs):
+        if name == "after_authenticate_client":
+            client_authenticated.send(self, *args, **kwargs)
+        elif name == "after_revoke_token":
+            token_revoked.send(self, *args, **kwargs)
+
+    def create_bearer_token_generator(self, config):
+        """Create a generator function for generating ``token`` value. This
+        method will create a Bearer Token generator with
+        :class:`authlib.oauth2.rfc6750.BearerToken`.
+
+        Configurable settings:
+
+        1. OAUTH2_ACCESS_TOKEN_GENERATOR: Boolean or import string, default is True.
+        2. OAUTH2_REFRESH_TOKEN_GENERATOR: Boolean or import string, default is False.
+        3. OAUTH2_TOKEN_EXPIRES_IN: Dict or import string, default is None.
+
+        By default, it will not generate ``refresh_token``, which can be turn on by
+        configure ``OAUTH2_REFRESH_TOKEN_GENERATOR``.
+
+        Here are some examples of the token generator::
+
+            OAUTH2_ACCESS_TOKEN_GENERATOR = "your_project.generators.gen_token"
+
+            # and in module `your_project.generators`, you can define:
+
+
+            def gen_token(client, grant_type, user, scope):
+                # generate token according to these parameters
+                token = create_random_token()
+                return f"{client.id}-{user.id}-{token}"
+
+        Here is an example of ``OAUTH2_TOKEN_EXPIRES_IN``::
+
+            OAUTH2_TOKEN_EXPIRES_IN = {
+                "authorization_code": 864000,
+                "urn:ietf:params:oauth:grant-type:jwt-bearer": 3600,
+            }
+        """
+        conf = config.get("OAUTH2_ACCESS_TOKEN_GENERATOR", True)
+        access_token_generator = create_token_generator(conf, 42)
+
+        conf = config.get("OAUTH2_REFRESH_TOKEN_GENERATOR", False)
+        refresh_token_generator = create_token_generator(conf, 48)
+
+        expires_conf = config.get("OAUTH2_TOKEN_EXPIRES_IN")
+        expires_generator = create_token_expires_in_generator(expires_conf)
+        return BearerTokenGenerator(
+            access_token_generator, refresh_token_generator, expires_generator
+        )
+
+
+def create_token_expires_in_generator(expires_in_conf=None):
+    if isinstance(expires_in_conf, str):
+        return import_string(expires_in_conf)
+
+    data = {}
+    data.update(BearerTokenGenerator.GRANT_TYPES_EXPIRES_IN)
+    if isinstance(expires_in_conf, dict):
+        data.update(expires_in_conf)
+
+    def expires_in(client, grant_type):
+        return data.get(grant_type, BearerTokenGenerator.DEFAULT_EXPIRES_IN)
+
+    return expires_in
+
+
+def create_token_generator(token_generator_conf, length=42):
+    if callable(token_generator_conf):
+        return token_generator_conf
+
+    if isinstance(token_generator_conf, str):
+        return import_string(token_generator_conf)
+    elif token_generator_conf is True:
+
+        def token_generator(*args, **kwargs):
+            return generate_token(length)
+
+        return token_generator

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth2/errors.py

@@ -0,0 +1,40 @@
+import importlib.metadata
+
+from werkzeug.exceptions import HTTPException
+
+_version = importlib.metadata.version("werkzeug").split(".")[0]
+
+if _version in ("0", "1"):
+
+    class _HTTPException(HTTPException):
+        def __init__(self, code, body, headers, response=None):
+            super().__init__(None, response)
+            self.code = code
+
+            self.body = body
+            self.headers = headers
+
+        def get_body(self, environ=None):
+            return self.body
+
+        def get_headers(self, environ=None):
+            return self.headers
+else:
+
+    class _HTTPException(HTTPException):
+        def __init__(self, code, body, headers, response=None):
+            super().__init__(None, response)
+            self.code = code
+
+            self.body = body
+            self.headers = headers
+
+        def get_body(self, environ=None, scope=None):
+            return self.body
+
+        def get_headers(self, environ=None, scope=None):
+            return self.headers
+
+
+def raise_http_exception(status, body, headers):
+    raise _HTTPException(status, body, headers)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth2/requests.py

@@ -0,0 +1,57 @@
+from collections import defaultdict
+from functools import cached_property
+
+from flask.wrappers import Request
+
+from authlib.oauth2.rfc6749 import JsonPayload
+from authlib.oauth2.rfc6749 import JsonRequest
+from authlib.oauth2.rfc6749 import OAuth2Payload
+from authlib.oauth2.rfc6749 import OAuth2Request
+
+
+class FlaskOAuth2Payload(OAuth2Payload):
+    def __init__(self, request: Request):
+        self._request = request
+
+    @property
+    def data(self):
+        return self._request.values
+
+    @cached_property
+    def datalist(self):
+        values = defaultdict(list)
+        for k in self.data:
+            values[k].extend(self.data.getlist(k))
+        return values
+
+
+class FlaskOAuth2Request(OAuth2Request):
+    def __init__(self, request: Request):
+        super().__init__(
+            method=request.method, uri=request.url, headers=request.headers
+        )
+        self._request = request
+        self.payload = FlaskOAuth2Payload(request)
+
+    @property
+    def args(self):
+        return self._request.args
+
+    @property
+    def form(self):
+        return self._request.form
+
+
+class FlaskJsonPayload(JsonPayload):
+    def __init__(self, request: Request):
+        self._request = request
+
+    @property
+    def data(self):
+        return self._request.get_json()
+
+
+class FlaskJsonRequest(JsonRequest):
+    def __init__(self, request: Request):
+        super().__init__(request.method, request.url, request.headers)
+        self.payload = FlaskJsonPayload(request)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth2/resource_protector.py

@@ -0,0 +1,121 @@
+import functools
+from contextlib import contextmanager
+
+from flask import g
+from flask import json
+from flask import request as _req
+from werkzeug.local import LocalProxy
+
+from authlib.oauth2 import OAuth2Error
+from authlib.oauth2 import ResourceProtector as _ResourceProtector
+from authlib.oauth2.rfc6749 import MissingAuthorizationError
+
+from .errors import raise_http_exception
+from .requests import FlaskJsonRequest
+from .signals import token_authenticated
+
+
+class ResourceProtector(_ResourceProtector):
+    """A protecting method for resource servers. Creating a ``require_oauth``
+    decorator easily with ResourceProtector::
+
+        from authlib.integrations.flask_oauth2 import ResourceProtector
+
+        require_oauth = ResourceProtector()
+
+        # add bearer token validator
+        from authlib.oauth2.rfc6750 import BearerTokenValidator
+        from project.models import Token
+
+
+        class MyBearerTokenValidator(BearerTokenValidator):
+            def authenticate_token(self, token_string):
+                return Token.query.filter_by(access_token=token_string).first()
+
+
+        require_oauth.register_token_validator(MyBearerTokenValidator())
+
+        # protect resource with require_oauth
+
+
+        @app.route("/user")
+        @require_oauth(["profile"])
+        def user_profile():
+            user = User.get(current_token.user_id)
+            return jsonify(user.to_dict())
+
+    """
+
+    def raise_error_response(self, error):
+        """Raise HTTPException for OAuth2Error. Developers can re-implement
+        this method to customize the error response.
+
+        :param error: OAuth2Error
+        :raise: HTTPException
+        """
+        status = error.status_code
+        body = json.dumps(dict(error.get_body()))
+        headers = error.get_headers()
+        raise_http_exception(status, body, headers)
+
+    def acquire_token(self, scopes=None, **kwargs):
+        """A method to acquire current valid token with the given scope.
+
+        :param scopes: a list of scope values
+        :return: token object
+        """
+        request = FlaskJsonRequest(_req)
+        # backward compatibility
+        kwargs["scopes"] = scopes
+        for claim in kwargs:
+            if isinstance(kwargs[claim], str):
+                kwargs[claim] = [kwargs[claim]]
+        token = self.validate_request(request=request, **kwargs)
+        token_authenticated.send(self, token=token)
+        g.authlib_server_oauth2_token = token
+        return token
+
+    @contextmanager
+    def acquire(self, scopes=None):
+        """The with statement of ``require_oauth``. Instead of using a
+        decorator, you can use a with statement instead::
+
+            @app.route("/api/user")
+            def user_api():
+                with require_oauth.acquire("profile") as token:
+                    user = User.get(token.user_id)
+                    return jsonify(user.to_dict())
+        """
+        try:
+            yield self.acquire_token(scopes)
+        except OAuth2Error as error:
+            self.raise_error_response(error)
+
+    def __call__(self, scopes=None, optional=False, **kwargs):
+        claims = kwargs
+        # backward compatibility
+        claims["scopes"] = scopes
+
+        def wrapper(f):
+            @functools.wraps(f)
+            def decorated(*args, **kwargs):
+                try:
+                    self.acquire_token(**claims)
+                except MissingAuthorizationError as error:
+                    if optional:
+                        return f(*args, **kwargs)
+                    self.raise_error_response(error)
+                except OAuth2Error as error:
+                    self.raise_error_response(error)
+                return f(*args, **kwargs)
+
+            return decorated
+
+        return wrapper
+
+
+def _get_current_token():
+    return g.get("authlib_server_oauth2_token")
+
+
+current_token = LocalProxy(_get_current_token)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/flask_oauth2/signals.py

@@ -0,0 +1,12 @@
+from flask.signals import Namespace
+
+_signal = Namespace()
+
+#: signal when client is authenticated
+client_authenticated = _signal.signal("client_authenticated")
+
+#: signal when token is revoked
+token_revoked = _signal.signal("token_revoked")
+
+#: signal when token is authenticated
+token_authenticated = _signal.signal("token_authenticated")

Backend/venv/lib/python3.12/site-packages/authlib/integrations/httpx_client/__init__.py

@@ -0,0 +1,36 @@
+from authlib.oauth1 import SIGNATURE_HMAC_SHA1
+from authlib.oauth1 import SIGNATURE_PLAINTEXT
+from authlib.oauth1 import SIGNATURE_RSA_SHA1
+from authlib.oauth1 import SIGNATURE_TYPE_BODY
+from authlib.oauth1 import SIGNATURE_TYPE_HEADER
+from authlib.oauth1 import SIGNATURE_TYPE_QUERY
+
+from ..base_client import OAuthError
+from .assertion_client import AssertionClient
+from .assertion_client import AsyncAssertionClient
+from .oauth1_client import AsyncOAuth1Client
+from .oauth1_client import OAuth1Auth
+from .oauth1_client import OAuth1Client
+from .oauth2_client import AsyncOAuth2Client
+from .oauth2_client import OAuth2Auth
+from .oauth2_client import OAuth2Client
+from .oauth2_client import OAuth2ClientAuth
+
+__all__ = [
+    "OAuthError",
+    "OAuth1Auth",
+    "AsyncOAuth1Client",
+    "OAuth1Client",
+    "SIGNATURE_HMAC_SHA1",
+    "SIGNATURE_RSA_SHA1",
+    "SIGNATURE_PLAINTEXT",
+    "SIGNATURE_TYPE_HEADER",
+    "SIGNATURE_TYPE_QUERY",
+    "SIGNATURE_TYPE_BODY",
+    "OAuth2Auth",
+    "OAuth2ClientAuth",
+    "OAuth2Client",
+    "AsyncOAuth2Client",
+    "AssertionClient",
+    "AsyncAssertionClient",
+]

Backend/venv/lib/python3.12/site-packages/authlib/integrations/httpx_client/assertion_client.py

@@ -0,0 +1,124 @@
+import httpx
+from httpx import USE_CLIENT_DEFAULT
+from httpx import Response
+
+from authlib.oauth2.rfc7521 import AssertionClient as _AssertionClient
+from authlib.oauth2.rfc7523 import JWTBearerGrant
+
+from ..base_client import OAuthError
+from .oauth2_client import OAuth2Auth
+from .utils import extract_client_kwargs
+
+__all__ = ["AsyncAssertionClient"]
+
+
+class AsyncAssertionClient(_AssertionClient, httpx.AsyncClient):
+    token_auth_class = OAuth2Auth
+    oauth_error_class = OAuthError
+    JWT_BEARER_GRANT_TYPE = JWTBearerGrant.GRANT_TYPE
+    ASSERTION_METHODS = {
+        JWT_BEARER_GRANT_TYPE: JWTBearerGrant.sign,
+    }
+    DEFAULT_GRANT_TYPE = JWT_BEARER_GRANT_TYPE
+
+    def __init__(
+        self,
+        token_endpoint,
+        issuer,
+        subject,
+        audience=None,
+        grant_type=None,
+        claims=None,
+        token_placement="header",
+        scope=None,
+        **kwargs,
+    ):
+        client_kwargs = extract_client_kwargs(kwargs)
+        httpx.AsyncClient.__init__(self, **client_kwargs)
+
+        _AssertionClient.__init__(
+            self,
+            session=None,
+            token_endpoint=token_endpoint,
+            issuer=issuer,
+            subject=subject,
+            audience=audience,
+            grant_type=grant_type,
+            claims=claims,
+            token_placement=token_placement,
+            scope=scope,
+            **kwargs,
+        )
+
+    async def request(
+        self, method, url, withhold_token=False, auth=USE_CLIENT_DEFAULT, **kwargs
+    ) -> Response:
+        """Send request with auto refresh token feature."""
+        if not withhold_token and auth is USE_CLIENT_DEFAULT:
+            if not self.token or self.token.is_expired():
+                await self.refresh_token()
+
+            auth = self.token_auth
+        return await super().request(method, url, auth=auth, **kwargs)
+
+    async def _refresh_token(self, data):
+        resp = await self.request(
+            "POST", self.token_endpoint, data=data, withhold_token=True
+        )
+
+        return self.parse_response_token(resp)
+
+
+class AssertionClient(_AssertionClient, httpx.Client):
+    token_auth_class = OAuth2Auth
+    oauth_error_class = OAuthError
+    JWT_BEARER_GRANT_TYPE = JWTBearerGrant.GRANT_TYPE
+    ASSERTION_METHODS = {
+        JWT_BEARER_GRANT_TYPE: JWTBearerGrant.sign,
+    }
+    DEFAULT_GRANT_TYPE = JWT_BEARER_GRANT_TYPE
+
+    def __init__(
+        self,
+        token_endpoint,
+        issuer,
+        subject,
+        audience=None,
+        grant_type=None,
+        claims=None,
+        token_placement="header",
+        scope=None,
+        **kwargs,
+    ):
+        client_kwargs = extract_client_kwargs(kwargs)
+        # app keyword was dropped!
+        app_value = client_kwargs.pop("app", None)
+        if app_value is not None:
+            client_kwargs["transport"] = httpx.WSGITransport(app=app_value)
+
+        httpx.Client.__init__(self, **client_kwargs)
+
+        _AssertionClient.__init__(
+            self,
+            session=self,
+            token_endpoint=token_endpoint,
+            issuer=issuer,
+            subject=subject,
+            audience=audience,
+            grant_type=grant_type,
+            claims=claims,
+            token_placement=token_placement,
+            scope=scope,
+            **kwargs,
+        )
+
+    def request(
+        self, method, url, withhold_token=False, auth=USE_CLIENT_DEFAULT, **kwargs
+    ):
+        """Send request with auto refresh token feature."""
+        if not withhold_token and auth is USE_CLIENT_DEFAULT:
+            if not self.token or self.token.is_expired():
+                self.refresh_token()
+
+            auth = self.token_auth
+        return super().request(method, url, auth=auth, **kwargs)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/httpx_client/oauth1_client.py

@@ -0,0 +1,145 @@
+import typing
+
+import httpx
+from httpx import Auth
+from httpx import Request
+from httpx import Response
+
+from authlib.common.encoding import to_unicode
+from authlib.oauth1 import SIGNATURE_HMAC_SHA1
+from authlib.oauth1 import SIGNATURE_TYPE_HEADER
+from authlib.oauth1 import ClientAuth
+from authlib.oauth1.client import OAuth1Client as _OAuth1Client
+
+from ..base_client import OAuthError
+from .utils import build_request
+from .utils import extract_client_kwargs
+
+
+class OAuth1Auth(Auth, ClientAuth):
+    """Signs the httpx request using OAuth 1 (RFC5849)."""
+
+    requires_request_body = True
+
+    def auth_flow(self, request: Request) -> typing.Generator[Request, Response, None]:
+        url, headers, body = self.prepare(
+            request.method, str(request.url), request.headers, request.content
+        )
+        headers["Content-Length"] = str(len(body))
+        yield build_request(
+            url=url, headers=headers, body=body, initial_request=request
+        )
+
+
+class AsyncOAuth1Client(_OAuth1Client, httpx.AsyncClient):
+    auth_class = OAuth1Auth
+
+    def __init__(
+        self,
+        client_id,
+        client_secret=None,
+        token=None,
+        token_secret=None,
+        redirect_uri=None,
+        rsa_key=None,
+        verifier=None,
+        signature_method=SIGNATURE_HMAC_SHA1,
+        signature_type=SIGNATURE_TYPE_HEADER,
+        force_include_body=False,
+        **kwargs,
+    ):
+        _client_kwargs = extract_client_kwargs(kwargs)
+        httpx.AsyncClient.__init__(self, **_client_kwargs)
+
+        _OAuth1Client.__init__(
+            self,
+            None,
+            client_id=client_id,
+            client_secret=client_secret,
+            token=token,
+            token_secret=token_secret,
+            redirect_uri=redirect_uri,
+            rsa_key=rsa_key,
+            verifier=verifier,
+            signature_method=signature_method,
+            signature_type=signature_type,
+            force_include_body=force_include_body,
+            **kwargs,
+        )
+
+    async def fetch_access_token(self, url, verifier=None, **kwargs):
+        """Method for fetching an access token from the token endpoint.
+
+        This is the final step in the OAuth 1 workflow. An access token is
+        obtained using all previously obtained credentials, including the
+        verifier from the authorization step.
+
+        :param url: Access Token endpoint.
+        :param verifier: A verifier string to prove authorization was granted.
+        :param kwargs: Extra parameters to include for fetching access token.
+        :return: A token dict.
+        """
+        if verifier:
+            self.auth.verifier = verifier
+        if not self.auth.verifier:
+            self.handle_error("missing_verifier", 'Missing "verifier" value')
+        token = await self._fetch_token(url, **kwargs)
+        self.auth.verifier = None
+        return token
+
+    async def _fetch_token(self, url, **kwargs):
+        resp = await self.post(url, **kwargs)
+        text = await resp.aread()
+        token = self.parse_response_token(resp.status_code, to_unicode(text))
+        self.token = token
+        return token
+
+    @staticmethod
+    def handle_error(error_type, error_description):
+        raise OAuthError(error_type, error_description)
+
+
+class OAuth1Client(_OAuth1Client, httpx.Client):
+    auth_class = OAuth1Auth
+
+    def __init__(
+        self,
+        client_id,
+        client_secret=None,
+        token=None,
+        token_secret=None,
+        redirect_uri=None,
+        rsa_key=None,
+        verifier=None,
+        signature_method=SIGNATURE_HMAC_SHA1,
+        signature_type=SIGNATURE_TYPE_HEADER,
+        force_include_body=False,
+        **kwargs,
+    ):
+        _client_kwargs = extract_client_kwargs(kwargs)
+        # app keyword was dropped!
+        app_value = _client_kwargs.pop("app", None)
+        if app_value is not None:
+            _client_kwargs["transport"] = httpx.WSGITransport(app=app_value)
+
+        httpx.Client.__init__(self, **_client_kwargs)
+
+        _OAuth1Client.__init__(
+            self,
+            self,
+            client_id=client_id,
+            client_secret=client_secret,
+            token=token,
+            token_secret=token_secret,
+            redirect_uri=redirect_uri,
+            rsa_key=rsa_key,
+            verifier=verifier,
+            signature_method=signature_method,
+            signature_type=signature_type,
+            force_include_body=force_include_body,
+            **kwargs,
+        )
+
+    @staticmethod
+    def handle_error(error_type, error_description):
+        raise OAuthError(error_type, error_description)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/httpx_client/oauth2_client.py

@@ -0,0 +1,285 @@
+import typing
+from contextlib import asynccontextmanager
+
+import httpx
+from anyio import Lock  # Import after httpx so import errors refer to httpx
+from httpx import USE_CLIENT_DEFAULT
+from httpx import Auth
+from httpx import Request
+from httpx import Response
+
+from authlib.common.urls import url_decode
+from authlib.oauth2.auth import ClientAuth
+from authlib.oauth2.auth import TokenAuth
+from authlib.oauth2.client import OAuth2Client as _OAuth2Client
+
+from ..base_client import InvalidTokenError
+from ..base_client import MissingTokenError
+from ..base_client import OAuthError
+from ..base_client import UnsupportedTokenTypeError
+from .utils import HTTPX_CLIENT_KWARGS
+from .utils import build_request
+
+__all__ = [
+    "OAuth2Auth",
+    "OAuth2ClientAuth",
+    "AsyncOAuth2Client",
+    "OAuth2Client",
+]
+
+
+class OAuth2Auth(Auth, TokenAuth):
+    """Sign requests for OAuth 2.0, currently only bearer token is supported."""
+
+    requires_request_body = True
+
+    def auth_flow(self, request: Request) -> typing.Generator[Request, Response, None]:
+        try:
+            url, headers, body = self.prepare(
+                str(request.url), request.headers, request.content
+            )
+            headers["Content-Length"] = str(len(body))
+            yield build_request(
+                url=url, headers=headers, body=body, initial_request=request
+            )
+        except KeyError as error:
+            description = f"Unsupported token_type: {str(error)}"
+            raise UnsupportedTokenTypeError(description=description) from error
+
+
+class OAuth2ClientAuth(Auth, ClientAuth):
+    requires_request_body = True
+
+    def auth_flow(self, request: Request) -> typing.Generator[Request, Response, None]:
+        url, headers, body = self.prepare(
+            request.method, str(request.url), request.headers, request.content
+        )
+        headers["Content-Length"] = str(len(body))
+        yield build_request(
+            url=url, headers=headers, body=body, initial_request=request
+        )
+
+
+class AsyncOAuth2Client(_OAuth2Client, httpx.AsyncClient):
+    SESSION_REQUEST_PARAMS = HTTPX_CLIENT_KWARGS
+
+    client_auth_class = OAuth2ClientAuth
+    token_auth_class = OAuth2Auth
+    oauth_error_class = OAuthError
+
+    def __init__(
+        self,
+        client_id=None,
+        client_secret=None,
+        token_endpoint_auth_method=None,
+        revocation_endpoint_auth_method=None,
+        scope=None,
+        redirect_uri=None,
+        token=None,
+        token_placement="header",
+        update_token=None,
+        leeway=60,
+        **kwargs,
+    ):
+        # extract httpx.Client kwargs
+        client_kwargs = self._extract_session_request_params(kwargs)
+        httpx.AsyncClient.__init__(self, **client_kwargs)
+
+        # We use a Lock to synchronize coroutines to prevent
+        # multiple concurrent attempts to refresh the same token
+        self._token_refresh_lock = Lock()
+
+        _OAuth2Client.__init__(
+            self,
+            session=None,
+            client_id=client_id,
+            client_secret=client_secret,
+            token_endpoint_auth_method=token_endpoint_auth_method,
+            revocation_endpoint_auth_method=revocation_endpoint_auth_method,
+            scope=scope,
+            redirect_uri=redirect_uri,
+            token=token,
+            token_placement=token_placement,
+            update_token=update_token,
+            leeway=leeway,
+            **kwargs,
+        )
+
+    async def request(
+        self, method, url, withhold_token=False, auth=USE_CLIENT_DEFAULT, **kwargs
+    ):
+        if not withhold_token and auth is USE_CLIENT_DEFAULT:
+            if not self.token:
+                raise MissingTokenError()
+
+            await self.ensure_active_token(self.token)
+
+            auth = self.token_auth
+
+        return await super().request(method, url, auth=auth, **kwargs)
+
+    @asynccontextmanager
+    async def stream(
+        self, method, url, withhold_token=False, auth=USE_CLIENT_DEFAULT, **kwargs
+    ):
+        if not withhold_token and auth is USE_CLIENT_DEFAULT:
+            if not self.token:
+                raise MissingTokenError()
+
+            await self.ensure_active_token(self.token)
+
+            auth = self.token_auth
+
+        async with super().stream(method, url, auth=auth, **kwargs) as resp:
+            yield resp
+
+    async def ensure_active_token(self, token):
+        async with self._token_refresh_lock:
+            if self.token.is_expired(leeway=self.leeway):
+                refresh_token = token.get("refresh_token")
+                url = self.metadata.get("token_endpoint")
+                if refresh_token and url:
+                    await self.refresh_token(url, refresh_token=refresh_token)
+                elif self.metadata.get("grant_type") == "client_credentials":
+                    access_token = token["access_token"]
+                    new_token = await self.fetch_token(
+                        url, grant_type="client_credentials"
+                    )
+                    if self.update_token:
+                        await self.update_token(new_token, access_token=access_token)
+                else:
+                    raise InvalidTokenError()
+
+    async def _fetch_token(
+        self,
+        url,
+        body="",
+        headers=None,
+        auth=USE_CLIENT_DEFAULT,
+        method="POST",
+        **kwargs,
+    ):
+        if method.upper() == "POST":
+            resp = await self.post(
+                url, data=dict(url_decode(body)), headers=headers, auth=auth, **kwargs
+            )
+        else:
+            if "?" in url:
+                url = "&".join([url, body])
+            else:
+                url = "?".join([url, body])
+            resp = await self.get(url, headers=headers, auth=auth, **kwargs)
+
+        for hook in self.compliance_hook["access_token_response"]:
+            resp = hook(resp)
+
+        return self.parse_response_token(resp)
+
+    async def _refresh_token(
+        self,
+        url,
+        refresh_token=None,
+        body="",
+        headers=None,
+        auth=USE_CLIENT_DEFAULT,
+        **kwargs,
+    ):
+        resp = await self.post(
+            url, data=dict(url_decode(body)), headers=headers, auth=auth, **kwargs
+        )
+
+        for hook in self.compliance_hook["refresh_token_response"]:
+            resp = hook(resp)
+
+        token = self.parse_response_token(resp)
+        if "refresh_token" not in token:
+            self.token["refresh_token"] = refresh_token
+
+        if self.update_token:
+            await self.update_token(self.token, refresh_token=refresh_token)
+
+        return self.token
+
+    def _http_post(
+        self, url, body=None, auth=USE_CLIENT_DEFAULT, headers=None, **kwargs
+    ):
+        return self.post(
+            url, data=dict(url_decode(body)), headers=headers, auth=auth, **kwargs
+        )
+
+
+class OAuth2Client(_OAuth2Client, httpx.Client):
+    SESSION_REQUEST_PARAMS = HTTPX_CLIENT_KWARGS
+
+    client_auth_class = OAuth2ClientAuth
+    token_auth_class = OAuth2Auth
+    oauth_error_class = OAuthError
+
+    def __init__(
+        self,
+        client_id=None,
+        client_secret=None,
+        token_endpoint_auth_method=None,
+        revocation_endpoint_auth_method=None,
+        scope=None,
+        redirect_uri=None,
+        token=None,
+        token_placement="header",
+        update_token=None,
+        **kwargs,
+    ):
+        # extract httpx.Client kwargs
+        client_kwargs = self._extract_session_request_params(kwargs)
+        # app keyword was dropped!
+        app_value = client_kwargs.pop("app", None)
+        if app_value is not None:
+            client_kwargs["transport"] = httpx.WSGITransport(app=app_value)
+
+        httpx.Client.__init__(self, **client_kwargs)
+
+        _OAuth2Client.__init__(
+            self,
+            session=self,
+            client_id=client_id,
+            client_secret=client_secret,
+            token_endpoint_auth_method=token_endpoint_auth_method,
+            revocation_endpoint_auth_method=revocation_endpoint_auth_method,
+            scope=scope,
+            redirect_uri=redirect_uri,
+            token=token,
+            token_placement=token_placement,
+            update_token=update_token,
+            **kwargs,
+        )
+
+    @staticmethod
+    def handle_error(error_type, error_description):
+        raise OAuthError(error_type, error_description)
+
+    def request(
+        self, method, url, withhold_token=False, auth=USE_CLIENT_DEFAULT, **kwargs
+    ):
+        if not withhold_token and auth is USE_CLIENT_DEFAULT:
+            if not self.token:
+                raise MissingTokenError()
+
+            if not self.ensure_active_token(self.token):
+                raise InvalidTokenError()
+
+            auth = self.token_auth
+
+        return super().request(method, url, auth=auth, **kwargs)
+
+    def stream(
+        self, method, url, withhold_token=False, auth=USE_CLIENT_DEFAULT, **kwargs
+    ):
+        if not withhold_token and auth is USE_CLIENT_DEFAULT:
+            if not self.token:
+                raise MissingTokenError()
+
+            if not self.ensure_active_token(self.token):
+                raise InvalidTokenError()
+
+            auth = self.token_auth
+
+        return super().stream(method, url, auth=auth, **kwargs)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/httpx_client/utils.py

@@ -0,0 +1,41 @@
+from httpx import Request
+
+HTTPX_CLIENT_KWARGS = [
+    "headers",
+    "cookies",
+    "verify",
+    "cert",
+    "http1",
+    "http2",
+    "proxy",
+    "mounts",
+    "timeout",
+    "follow_redirects",
+    "limits",
+    "max_redirects",
+    "event_hooks",
+    "base_url",
+    "transport",
+    "trust_env",
+    "default_encoding",
+]
+
+
+def extract_client_kwargs(kwargs):
+    client_kwargs = {}
+    for k in HTTPX_CLIENT_KWARGS:
+        if k in kwargs:
+            client_kwargs[k] = kwargs.pop(k)
+    return client_kwargs
+
+
+def build_request(url, headers, body, initial_request: Request) -> Request:
+    """Make sure that all the data from initial request is passed to the updated object."""
+    updated_request = Request(
+        method=initial_request.method, url=url, headers=headers, content=body
+    )
+
+    if hasattr(initial_request, "extensions"):
+        updated_request.extensions = initial_request.extensions
+
+    return updated_request

Backend/venv/lib/python3.12/site-packages/authlib/integrations/requests_client/__init__.py

@@ -0,0 +1,28 @@
+from authlib.oauth1 import SIGNATURE_HMAC_SHA1
+from authlib.oauth1 import SIGNATURE_PLAINTEXT
+from authlib.oauth1 import SIGNATURE_RSA_SHA1
+from authlib.oauth1 import SIGNATURE_TYPE_BODY
+from authlib.oauth1 import SIGNATURE_TYPE_HEADER
+from authlib.oauth1 import SIGNATURE_TYPE_QUERY
+
+from ..base_client import OAuthError
+from .assertion_session import AssertionSession
+from .oauth1_session import OAuth1Auth
+from .oauth1_session import OAuth1Session
+from .oauth2_session import OAuth2Auth
+from .oauth2_session import OAuth2Session
+
+__all__ = [
+    "OAuthError",
+    "OAuth1Session",
+    "OAuth1Auth",
+    "SIGNATURE_HMAC_SHA1",
+    "SIGNATURE_RSA_SHA1",
+    "SIGNATURE_PLAINTEXT",
+    "SIGNATURE_TYPE_HEADER",
+    "SIGNATURE_TYPE_QUERY",
+    "SIGNATURE_TYPE_BODY",
+    "OAuth2Session",
+    "OAuth2Auth",
+    "AssertionSession",
+]

Backend/venv/lib/python3.12/site-packages/authlib/integrations/requests_client/assertion_session.py

@@ -0,0 +1,70 @@
+from requests import Session
+
+from authlib.oauth2.rfc7521 import AssertionClient
+from authlib.oauth2.rfc7523 import JWTBearerGrant
+
+from .oauth2_session import OAuth2Auth
+from .utils import update_session_configure
+
+
+class AssertionAuth(OAuth2Auth):
+    def ensure_active_token(self):
+        if self.client and (
+            not self.token or self.token.is_expired(self.client.leeway)
+        ):
+            return self.client.refresh_token()
+
+
+class AssertionSession(AssertionClient, Session):
+    """Constructs a new Assertion Framework for OAuth 2.0 Authorization Grants
+    per RFC7521_.
+
+    .. _RFC7521: https://tools.ietf.org/html/rfc7521
+    """
+
+    token_auth_class = AssertionAuth
+    JWT_BEARER_GRANT_TYPE = JWTBearerGrant.GRANT_TYPE
+    ASSERTION_METHODS = {
+        JWT_BEARER_GRANT_TYPE: JWTBearerGrant.sign,
+    }
+    DEFAULT_GRANT_TYPE = JWT_BEARER_GRANT_TYPE
+
+    def __init__(
+        self,
+        token_endpoint,
+        issuer,
+        subject,
+        audience=None,
+        grant_type=None,
+        claims=None,
+        token_placement="header",
+        scope=None,
+        default_timeout=None,
+        leeway=60,
+        **kwargs,
+    ):
+        Session.__init__(self)
+        self.default_timeout = default_timeout
+        update_session_configure(self, kwargs)
+        AssertionClient.__init__(
+            self,
+            session=self,
+            token_endpoint=token_endpoint,
+            issuer=issuer,
+            subject=subject,
+            audience=audience,
+            grant_type=grant_type,
+            claims=claims,
+            token_placement=token_placement,
+            scope=scope,
+            leeway=leeway,
+            **kwargs,
+        )
+
+    def request(self, method, url, withhold_token=False, auth=None, **kwargs):
+        """Send request with auto refresh token feature."""
+        if self.default_timeout:
+            kwargs.setdefault("timeout", self.default_timeout)
+        if not withhold_token and auth is None:
+            auth = self.token_auth
+        return super().request(method, url, auth=auth, **kwargs)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/requests_client/oauth1_session.py

@@ -0,0 +1,74 @@
+from requests import Session
+from requests.auth import AuthBase
+
+from authlib.common.encoding import to_native
+from authlib.oauth1 import SIGNATURE_HMAC_SHA1
+from authlib.oauth1 import SIGNATURE_TYPE_HEADER
+from authlib.oauth1 import ClientAuth
+from authlib.oauth1.client import OAuth1Client
+
+from ..base_client import OAuthError
+from .utils import update_session_configure
+
+
+class OAuth1Auth(AuthBase, ClientAuth):
+    """Signs the request using OAuth 1 (RFC5849)."""
+
+    def __call__(self, req):
+        url, headers, body = self.prepare(req.method, req.url, req.headers, req.body)
+
+        req.url = to_native(url)
+        req.prepare_headers(headers)
+        if body:
+            req.body = body
+        return req
+
+
+class OAuth1Session(OAuth1Client, Session):
+    auth_class = OAuth1Auth
+
+    def __init__(
+        self,
+        client_id,
+        client_secret=None,
+        token=None,
+        token_secret=None,
+        redirect_uri=None,
+        rsa_key=None,
+        verifier=None,
+        signature_method=SIGNATURE_HMAC_SHA1,
+        signature_type=SIGNATURE_TYPE_HEADER,
+        force_include_body=False,
+        **kwargs,
+    ):
+        Session.__init__(self)
+        update_session_configure(self, kwargs)
+        OAuth1Client.__init__(
+            self,
+            session=self,
+            client_id=client_id,
+            client_secret=client_secret,
+            token=token,
+            token_secret=token_secret,
+            redirect_uri=redirect_uri,
+            rsa_key=rsa_key,
+            verifier=verifier,
+            signature_method=signature_method,
+            signature_type=signature_type,
+            force_include_body=force_include_body,
+            **kwargs,
+        )
+
+    def rebuild_auth(self, prepared_request, response):
+        """When being redirected we should always strip Authorization
+        header, since nonce may not be reused as per OAuth spec.
+        """
+        if "Authorization" in prepared_request.headers:
+            # If we get redirected to a new host, we should strip out
+            # any authentication headers.
+            prepared_request.headers.pop("Authorization", True)
+            prepared_request.prepare_auth(self.auth)
+
+    @staticmethod
+    def handle_error(error_type, error_description):
+        raise OAuthError(error_type, error_description)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/requests_client/oauth2_session.py

@@ -0,0 +1,140 @@
+from requests import Session
+from requests.auth import AuthBase
+
+from authlib.oauth2.auth import ClientAuth
+from authlib.oauth2.auth import TokenAuth
+from authlib.oauth2.client import OAuth2Client
+
+from ..base_client import InvalidTokenError
+from ..base_client import MissingTokenError
+from ..base_client import OAuthError
+from ..base_client import UnsupportedTokenTypeError
+from .utils import update_session_configure
+
+__all__ = ["OAuth2Session", "OAuth2Auth"]
+
+
+class OAuth2Auth(AuthBase, TokenAuth):
+    """Sign requests for OAuth 2.0, currently only bearer token is supported."""
+
+    def ensure_active_token(self):
+        if self.client and not self.client.ensure_active_token(self.token):
+            raise InvalidTokenError()
+
+    def __call__(self, req):
+        self.ensure_active_token()
+        try:
+            req.url, req.headers, req.body = self.prepare(
+                req.url, req.headers, req.body
+            )
+        except KeyError as error:
+            description = f"Unsupported token_type: {str(error)}"
+            raise UnsupportedTokenTypeError(description=description) from error
+        return req
+
+
+class OAuth2ClientAuth(AuthBase, ClientAuth):
+    """Attaches OAuth Client Authentication to the given Request object."""
+
+    def __call__(self, req):
+        req.url, req.headers, req.body = self.prepare(
+            req.method, req.url, req.headers, req.body
+        )
+        return req
+
+
+class OAuth2Session(OAuth2Client, Session):
+    """Construct a new OAuth 2 client requests session.
+
+    :param client_id: Client ID, which you get from client registration.
+    :param client_secret: Client Secret, which you get from registration.
+    :param authorization_endpoint: URL of the authorization server's
+        authorization endpoint.
+    :param token_endpoint: URL of the authorization server's token endpoint.
+    :param token_endpoint_auth_method: client authentication method for
+        token endpoint.
+    :param revocation_endpoint: URL of the authorization server's OAuth 2.0
+        revocation endpoint.
+    :param revocation_endpoint_auth_method: client authentication method for
+        revocation endpoint.
+    :param scope: Scope that you needed to access user resources.
+    :param state: Shared secret to prevent CSRF attack.
+    :param redirect_uri: Redirect URI you registered as callback.
+    :param token: A dict of token attributes such as ``access_token``,
+        ``token_type`` and ``expires_at``.
+    :param token_placement: The place to put token in HTTP request. Available
+        values: "header", "body", "uri".
+    :param update_token: A function for you to update token. It accept a
+        :class:`OAuth2Token` as parameter.
+    :param leeway: Time window in seconds before the actual expiration of the
+        authentication token, that the token is considered expired and will
+        be refreshed.
+    :param default_timeout: If settled, every requests will have a default timeout.
+    """
+
+    client_auth_class = OAuth2ClientAuth
+    token_auth_class = OAuth2Auth
+    oauth_error_class = OAuthError
+    SESSION_REQUEST_PARAMS = (
+        "allow_redirects",
+        "timeout",
+        "cookies",
+        "files",
+        "proxies",
+        "hooks",
+        "stream",
+        "verify",
+        "cert",
+        "json",
+    )
+
+    def __init__(
+        self,
+        client_id=None,
+        client_secret=None,
+        token_endpoint_auth_method=None,
+        revocation_endpoint_auth_method=None,
+        scope=None,
+        state=None,
+        redirect_uri=None,
+        token=None,
+        token_placement="header",
+        update_token=None,
+        leeway=60,
+        default_timeout=None,
+        **kwargs,
+    ):
+        Session.__init__(self)
+        self.default_timeout = default_timeout
+        update_session_configure(self, kwargs)
+
+        OAuth2Client.__init__(
+            self,
+            session=self,
+            client_id=client_id,
+            client_secret=client_secret,
+            token_endpoint_auth_method=token_endpoint_auth_method,
+            revocation_endpoint_auth_method=revocation_endpoint_auth_method,
+            scope=scope,
+            state=state,
+            redirect_uri=redirect_uri,
+            token=token,
+            token_placement=token_placement,
+            update_token=update_token,
+            leeway=leeway,
+            **kwargs,
+        )
+
+    def fetch_access_token(self, url=None, **kwargs):
+        """Alias for fetch_token."""
+        return self.fetch_token(url, **kwargs)
+
+    def request(self, method, url, withhold_token=False, auth=None, **kwargs):
+        """Send request with auto refresh token feature (if available)."""
+        if self.default_timeout:
+            kwargs.setdefault("timeout", self.default_timeout)
+        if not withhold_token and auth is None:
+            if not self.token:
+                raise MissingTokenError()
+            auth = self.token_auth
+        return super().request(method, url, auth=auth, **kwargs)

Backend/venv/lib/python3.12/site-packages/authlib/integrations/requests_client/utils.py

@@ -0,0 +1,15 @@
+REQUESTS_SESSION_KWARGS = [
+    "proxies",
+    "hooks",
+    "stream",
+    "verify",
+    "cert",
+    "max_redirects",
+    "trust_env",
+]
+
+
+def update_session_configure(session, kwargs):
+    for k in REQUESTS_SESSION_KWARGS:
+        if k in kwargs:
+            setattr(session, k, kwargs.pop(k))

Backend/venv/lib/python3.12/site-packages/authlib/integrations/sqla_oauth2/__init__.py

@@ -0,0 +1,19 @@
+from .client_mixin import OAuth2ClientMixin
+from .functions import create_bearer_token_validator
+from .functions import create_query_client_func
+from .functions import create_query_token_func
+from .functions import create_revocation_endpoint
+from .functions import create_save_token_func
+from .tokens_mixins import OAuth2AuthorizationCodeMixin
+from .tokens_mixins import OAuth2TokenMixin
+
+__all__ = [
+    "OAuth2ClientMixin",
+    "OAuth2AuthorizationCodeMixin",
+    "OAuth2TokenMixin",
+    "create_query_client_func",
+    "create_save_token_func",
+    "create_query_token_func",
+    "create_revocation_endpoint",
+    "create_bearer_token_validator",
+]

Backend/venv/lib/python3.12/site-packages/authlib/integrations/sqla_oauth2/client_mixin.py

@@ -0,0 +1,147 @@
+import secrets
+
+from sqlalchemy import Column
+from sqlalchemy import Integer
+from sqlalchemy import String
+from sqlalchemy import Text
+
+from authlib.common.encoding import json_dumps
+from authlib.common.encoding import json_loads
+from authlib.oauth2.rfc6749 import ClientMixin
+from authlib.oauth2.rfc6749 import list_to_scope
+from authlib.oauth2.rfc6749 import scope_to_list
+
+
+class OAuth2ClientMixin(ClientMixin):
+    client_id = Column(String(48), index=True)
+    client_secret = Column(String(120))
+    client_id_issued_at = Column(Integer, nullable=False, default=0)
+    client_secret_expires_at = Column(Integer, nullable=False, default=0)
+    _client_metadata = Column("client_metadata", Text)
+
+    @property
+    def client_info(self):
+        """Implementation for Client Info in OAuth 2.0 Dynamic Client
+        Registration Protocol via `Section 3.2.1`_.
+
+        .. _`Section 3.2.1`: https://tools.ietf.org/html/rfc7591#section-3.2.1
+        """
+        return dict(
+            client_id=self.client_id,
+            client_secret=self.client_secret,
+            client_id_issued_at=self.client_id_issued_at,
+            client_secret_expires_at=self.client_secret_expires_at,
+        )
+
+    @property
+    def client_metadata(self):
+        if "client_metadata" in self.__dict__:
+            return self.__dict__["client_metadata"]
+        if self._client_metadata:
+            data = json_loads(self._client_metadata)
+            self.__dict__["client_metadata"] = data
+            return data
+        return {}
+
+    def set_client_metadata(self, value):
+        self._client_metadata = json_dumps(value)
+        if "client_metadata" in self.__dict__:
+            del self.__dict__["client_metadata"]
+
+    @property
+    def redirect_uris(self):
+        return self.client_metadata.get("redirect_uris", [])
+
+    @property
+    def token_endpoint_auth_method(self):
+        return self.client_metadata.get(
+            "token_endpoint_auth_method", "client_secret_basic"
+        )
+
+    @property
+    def grant_types(self):
+        return self.client_metadata.get("grant_types", [])
+
+    @property
+    def response_types(self):
+        return self.client_metadata.get("response_types", [])
+
+    @property
+    def client_name(self):
+        return self.client_metadata.get("client_name")
+
+    @property
+    def client_uri(self):
+        return self.client_metadata.get("client_uri")
+
+    @property
+    def logo_uri(self):
+        return self.client_metadata.get("logo_uri")
+
+    @property
+    def scope(self):
+        return self.client_metadata.get("scope", "")
+
+    @property
+    def contacts(self):
+        return self.client_metadata.get("contacts", [])
+
+    @property
+    def tos_uri(self):
+        return self.client_metadata.get("tos_uri")
+
+    @property
+    def policy_uri(self):
+        return self.client_metadata.get("policy_uri")
+
+    @property
+    def jwks_uri(self):
+        return self.client_metadata.get("jwks_uri")
+
+    @property
+    def jwks(self):
+        return self.client_metadata.get("jwks", [])
+
+    @property
+    def software_id(self):
+        return self.client_metadata.get("software_id")
+
+    @property
+    def software_version(self):
+        return self.client_metadata.get("software_version")
+
+    @property
+    def id_token_signed_response_alg(self):
+        return self.client_metadata.get("id_token_signed_response_alg")
+
+    def get_client_id(self):
+        return self.client_id
+
+    def get_default_redirect_uri(self):
+        if self.redirect_uris:
+            return self.redirect_uris[0]
+
+    def get_allowed_scope(self, scope):
+        if not scope:
+            return ""
+        allowed = set(self.scope.split())
+        scopes = scope_to_list(scope)
+        return list_to_scope([s for s in scopes if s in allowed])
+
+    def check_redirect_uri(self, redirect_uri):
+        return redirect_uri in self.redirect_uris
+
+    def check_client_secret(self, client_secret):
+        return secrets.compare_digest(self.client_secret, client_secret)
+
+    def check_endpoint_auth_method(self, method, endpoint):
+        if endpoint == "token":
+            return self.token_endpoint_auth_method == method
+        # TODO
+        return True
+
+    def check_response_type(self, response_type):
+        return response_type in self.response_types
+
+    def check_grant_type(self, grant_type):
+        return grant_type in self.grant_types

Backend/venv/lib/python3.12/site-packages/authlib/integrations/sqla_oauth2/functions.py

@@ -0,0 +1,104 @@
+import time
+
+
+def create_query_client_func(session, client_model):
+    """Create an ``query_client`` function that can be used in authorization
+    server.
+
+    :param session: SQLAlchemy session
+    :param client_model: Client model class
+    """
+
+    def query_client(client_id):
+        q = session.query(client_model)
+        return q.filter_by(client_id=client_id).first()
+
+    return query_client
+
+
+def create_save_token_func(session, token_model):
+    """Create an ``save_token`` function that can be used in authorization
+    server.
+
+    :param session: SQLAlchemy session
+    :param token_model: Token model class
+    """
+
+    def save_token(token, request):
+        if request.user:
+            user_id = request.user.get_user_id()
+        else:
+            user_id = None
+        client = request.client
+        item = token_model(client_id=client.client_id, user_id=user_id, **token)
+        session.add(item)
+        session.commit()
+
+    return save_token
+
+
+def create_query_token_func(session, token_model):
+    """Create an ``query_token`` function for revocation, introspection
+    token endpoints.
+
+    :param session: SQLAlchemy session
+    :param token_model: Token model class
+    """
+
+    def query_token(token, token_type_hint):
+        q = session.query(token_model)
+        if token_type_hint == "access_token":
+            return q.filter_by(access_token=token).first()
+        elif token_type_hint == "refresh_token":
+            return q.filter_by(refresh_token=token).first()
+        # without token_type_hint
+        item = q.filter_by(access_token=token).first()
+        if item:
+            return item
+        return q.filter_by(refresh_token=token).first()
+
+    return query_token
+
+
+def create_revocation_endpoint(session, token_model):
+    """Create a revocation endpoint class with SQLAlchemy session
+    and token model.
+
+    :param session: SQLAlchemy session
+    :param token_model: Token model class
+    """
+    from authlib.oauth2.rfc7009 import RevocationEndpoint
+
+    query_token = create_query_token_func(session, token_model)
+
+    class _RevocationEndpoint(RevocationEndpoint):
+        def query_token(self, token, token_type_hint):
+            return query_token(token, token_type_hint)
+
+        def revoke_token(self, token, request):
+            now = int(time.time())
+            hint = request.form.get("token_type_hint")
+            token.access_token_revoked_at = now
+            if hint != "access_token":
+                token.refresh_token_revoked_at = now
+            session.add(token)
+            session.commit()
+
+    return _RevocationEndpoint
+
+
+def create_bearer_token_validator(session, token_model):
+    """Create an bearer token validator class with SQLAlchemy session
+    and token model.
+
+    :param session: SQLAlchemy session
+    :param token_model: Token model class
+    """
+    from authlib.oauth2.rfc6750 import BearerTokenValidator
+
+    class _BearerTokenValidator(BearerTokenValidator):
+        def authenticate_token(self, token_string):
+            q = session.query(token_model)
+            return q.filter_by(access_token=token_string).first()
+
+    return _BearerTokenValidator

Backend/venv/lib/python3.12/site-packages/authlib/integrations/sqla_oauth2/tokens_mixins.py

@@ -0,0 +1,76 @@
+import time
+
+from sqlalchemy import Column
+from sqlalchemy import Integer
+from sqlalchemy import String
+from sqlalchemy import Text
+
+from authlib.oauth2.rfc6749 import AuthorizationCodeMixin
+from authlib.oauth2.rfc6749 import TokenMixin
+
+
+class OAuth2AuthorizationCodeMixin(AuthorizationCodeMixin):
+    code = Column(String(120), unique=True, nullable=False)
+    client_id = Column(String(48))
+    redirect_uri = Column(Text, default="")
+    response_type = Column(Text, default="")
+    scope = Column(Text, default="")
+    nonce = Column(Text)
+    auth_time = Column(Integer, nullable=False, default=lambda: int(time.time()))
+    acr = Column(Text, nullable=True)
+    amr = Column(Text, nullable=True)
+
+    code_challenge = Column(Text)
+    code_challenge_method = Column(String(48))
+
+    def is_expired(self):
+        return self.auth_time + 300 < time.time()
+
+    def get_redirect_uri(self):
+        return self.redirect_uri
+
+    def get_scope(self):
+        return self.scope
+
+    def get_auth_time(self):
+        return self.auth_time
+
+    def get_acr(self):
+        return self.acr
+
+    def get_amr(self):
+        return self.amr.split() if self.amr else []
+
+    def get_nonce(self):
+        return self.nonce
+
+
+class OAuth2TokenMixin(TokenMixin):
+    client_id = Column(String(48))
+    token_type = Column(String(40))
+    access_token = Column(String(255), unique=True, nullable=False)
+    refresh_token = Column(String(255), index=True)
+    scope = Column(Text, default="")
+    issued_at = Column(Integer, nullable=False, default=lambda: int(time.time()))
+    access_token_revoked_at = Column(Integer, nullable=False, default=0)
+    refresh_token_revoked_at = Column(Integer, nullable=False, default=0)
+    expires_in = Column(Integer, nullable=False, default=0)
+
+    def check_client(self, client):
+        return self.client_id == client.get_client_id()
+
+    def get_scope(self):
+        return self.scope
+
+    def get_expires_in(self):
+        return self.expires_in
+
+    def is_revoked(self):
+        return self.access_token_revoked_at or self.refresh_token_revoked_at
+
+    def is_expired(self):
+        if not self.expires_in:
+            return False
+
+        expires_at = self.issued_at + self.expires_in
+        return expires_at < time.time()

Backend/venv/lib/python3.12/site-packages/authlib/integrations/starlette_client/__init__.py

@@ -0,0 +1,26 @@
+from ..base_client import BaseOAuth
+from ..base_client import OAuthError
+from .apps import StarletteOAuth1App
+from .apps import StarletteOAuth2App
+from .integration import StarletteIntegration
+
+
+class OAuth(BaseOAuth):
+    oauth1_client_cls = StarletteOAuth1App
+    oauth2_client_cls = StarletteOAuth2App
+    framework_integration_cls = StarletteIntegration
+
+    def __init__(self, config=None, cache=None, fetch_token=None, update_token=None):
+        super().__init__(
+            cache=cache, fetch_token=fetch_token, update_token=update_token
+        )
+        self.config = config
+
+
+__all__ = [
+    "OAuth",
+    "OAuthError",
+    "StarletteIntegration",
+    "StarletteOAuth1App",
+    "StarletteOAuth2App",
+]