Skip to content

proxystore.p2p.relay.authenticate

Authenticate users from request headers.

UserT module-attribute 

UserT = TypeVar('UserT', covariant=True)

Auth user generic type.

Authenticator

Bases: Protocol[UserT]

Authenticate users from request headers.

authenticate_user 

authenticate_user(headers: Mapping[str, str]) -> UserT

Authenticate user from request headers.

Parameters:

Returns:

  • UserT –

    User representation on authentication success.

Raises:

Source code in proxystore/p2p/relay/authenticate.py 
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
def authenticate_user(self, headers: Mapping[str, str]) -> UserT:
    """Authenticate user from request headers.

    Args:
        headers: Request headers.

    Returns:
        User representation on authentication success.

    Raises:
        ForbiddenError: user is authenticated but is missing permissions
            or accessing forbidden resources.
        UnauthorizedError: user authentication fails.
    """
    ...

NullUser

Null user that is always equal to another null user instance.

NullAuthenticator

Authenticator that implements no authentication.

authenticate_user 

authenticate_user(headers: Mapping[str, str]) -> NullUser

Authenticate user from request headers.

Parameters:

Returns:

  • NullUser –

    Null user regardless of provided headers.

Source code in proxystore/p2p/relay/authenticate.py 
59
60
61
62
63
64
65
66
67
68
def authenticate_user(self, headers: Mapping[str, str]) -> NullUser:
    """Authenticate user from request headers.

    Args:
        headers: Request headers.

    Returns:
        Null user regardless of provided headers.
    """
    return NullUser()

GlobusUser dataclass 

GlobusUser(
    username: str,
    client_id: UUID,
    email: str | None = None,
    display_name: str | None = None,
)

Globus Auth user information.

Fields are retrieved via the token introspection API.

Attributes:

  • username (str) –

    Identity username.

  • client_id (UUID) –

    The Globus Auth issues client id of the client to which the introspected token was issued.

  • email (str | None) –

    Email address associated with the effective identity of the introspected token. May be None if the user restricts their identity visibility.

  • display_name (str | None) –

    Display name associated with the effective identity of the introspected token. May be None if the user restricts their identity visibility.

__eq__ 

__eq__(other: object) -> bool

Check equality using only Globus Auth client ID.

Source code in proxystore/p2p/relay/authenticate.py 
 95
 96
 97
 98
 99
100
def __eq__(self, other: object) -> bool:
    """Check equality using only Globus Auth client ID."""
    if isinstance(other, GlobusUser):
        return self.client_id == other.client_id
    else:
        return False

GlobusAuthenticator 

GlobusAuthenticator(
    client_id: str | None = None,
    client_secret: str | None = None,
    *,
    audience: str = ProxyStoreRelayScopes.resource_server,
    auth_client: ConfidentialAppAuthClient | None = None
)

Globus Auth authorizer.

Parameters:

  • client_id (str | None, default: None ) –

    Globus application client ID. If either client_id or client_secret is None, the values will be read from the environment variables as described in get_confidential_app_auth_client. Ignored if auth_client is provided.

  • client_secret (str | None, default: None ) –

    Globus application client secret. See client_id for details. Ignored if auth_client is provided.

  • audience (str, default: resource_server ) –

    Intended audience of the token. This should typically be the resource server of the the token was issued for. E.g., the UUID of the ProxyStore Relay Server application.

  • auth_client (ConfidentialAppAuthClient | None, default: None ) –

    Optional confidential application authentication client which is used for introspecting client tokens.

Source code in proxystore/p2p/relay/authenticate.py 
121
122
123
124
125
126
127
128
129
130
131
132
133
134
def __init__(
    self,
    client_id: str | None = None,
    client_secret: str | None = None,
    *,
    audience: str = ProxyStoreRelayScopes.resource_server,
    auth_client: globus_sdk.ConfidentialAppAuthClient | None = None,
) -> None:
    self.auth_client = (
        get_confidential_app_auth_client(client_id, client_secret)
        if auth_client is None
        else auth_client
    )
    self.audience = audience

authenticate_user 

authenticate_user(headers: Mapping[str, str]) -> GlobusUser

Authenticate a Globus Auth user from request header.

This follows from the Globus Sample Data Portal example.

Parameters:

  • headers (Mapping[str, str]) –

    Request headers to extract tokens from.

Returns:

Raises:

  • UnauthorizedError –

    if the authorization header is missing or the header is malformed.

  • ForbiddenError –

    if the tokens have expired or been revoked.

  • ForbiddenError –

    if audience is not included in the token's audience.

Source code in proxystore/p2p/relay/authenticate.py 
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
def authenticate_user(self, headers: Mapping[str, str]) -> GlobusUser:
    """Authenticate a Globus Auth user from request header.

    This follows from the [Globus Sample Data Portal](https://github.com/globus/globus-sample-data-portal/blob/30e30cd418ee9b103e04916e19deb9902d3aafd8/service/decorators.py)
    example.

    Args:
        headers: Request headers to extract tokens from.

    Returns:
        Globus Auth identity returned via \
        [token introspection](https://docs.globus.org/api/auth/reference/#token-introspect).

    Raises:
        UnauthorizedError: if the authorization header is missing or
            the header is malformed.
        ForbiddenError: if the tokens have expired or been revoked.
        ForbiddenError: if `audience` is not included in the token's
            audience.
    """
    token = get_token_from_headers(headers)
    token_meta = self.auth_client.oauth2_token_introspect(token)

    if not token_meta.get('active'):
        raise ForbiddenError('Token is expired or has been revoked.')

    if self.audience is not None and self.audience not in token_meta.get(
        'aud',
        [],
    ):
        raise ForbiddenError(
            f'Token audience does not include "{self.audience}". This '
            'could result in a confused deputy attack. Ensure the correct '
            'scopes are requested when the token is created.',
        )

    return GlobusUser(
        username=token_meta.get('username'),
        client_id=uuid.UUID(token_meta.get('client_id')),
        email=token_meta.get('email', None),
        display_name=token_meta.get('name', None),
    )

get_authenticator 

get_authenticator(
    config: RelayAuthConfig,
) -> Authenticator[Any]

Create an authenticator from a configuration.

Parameters:

Returns:

Raises:

  • ValueError –

    if the authentication method in the config is unknown.

Source code in proxystore/p2p/relay/authenticate.py 
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
def get_authenticator(config: RelayAuthConfig) -> Authenticator[Any]:
    """Create an authenticator from a configuration.

    Args:
        config: Configuration.

    Returns:
        Authenticator.

    Raises:
        ValueError: if the authentication method in the config is unknown.
    """
    if config.method is None:
        return NullAuthenticator()
    elif config.method == 'globus':
        return GlobusAuthenticator(**config.kwargs)
    else:
        raise ValueError(f'Unknown authentication method "{config.method}."')

get_token_from_headers 

get_token_from_headers(headers: Mapping[str, str]) -> str

Extract token from websockets headers.

The header is expected to have the format Authorization: Bearer <TOKEN>.

Parameters:

  • headers (Mapping[str, str]) –

    Request headers to extract tokens from.

Returns:

  • str –

    String token.

Raises:

Source code in proxystore/p2p/relay/authenticate.py 
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
def get_token_from_headers(headers: Mapping[str, str]) -> str:
    """Extract token from websockets headers.

    The header is expected to have the format `Authorization: Bearer <TOKEN>`.

    Args:
         headers: Request headers to extract tokens from.

    Returns:
        String token.

    Raises:
        UnauthorizedError: if the authorization header is missing.
        UnauthorizedError: if the authorization header is malformed.
    """
    if 'Authorization' not in headers:
        raise UnauthorizedError(
            'Request headers are missing authorization header.',
        )

    auth_header_parts = headers['Authorization'].split(' ')

    if len(auth_header_parts) != 2 or auth_header_parts[0] != 'Bearer':
        raise UnauthorizedError(
            'Bearer token in authorization header is malformed.',
        )

    return auth_header_parts[1]