WebID Service#

Starting in version 2.0, ESS introduces a separate service to host and manage WebIDs and the corresponding Profile Documents.

WebID and Profile Document#

According to the WebID draft specification, a WebID is a URL that identifies an agent.

Starting in version 2.0,

  • ESS’ WebID service creates WebIDs of the form:

    https://id.{ESS DOMAIN}/{username}
    
  • The WebID profile document is no longer hosted in the user’s Pod. 1

Prior to version 2.0, ESS issued WebIDs of the form https://{ESS Domain}/{username}/profile/card#me, which were hosted in the user’s Pod.

WebID Profile Document#

The WebID URL dereferences to the agent’s WebID profile, where the profile is a document that describes the agent.

The ESS WebID service ensures that the WebID Profile document is a valid RDF document. An RDF document is a document whose contents consists of statements that have the following form (also known as a triple):

<subject> <predicate> <object> .

The WebID profile document is a publicly accessible document. 1

1(1,2)

ESS 2.0 also creates an extended profile resource, separate from the public WebID profile. The extended profile resource, unlike the WebID profile, is hosted in the agent’s Pod, and by default, is private. The agents can grant or deny access to their extended profile like any other resource in their Pod. For more information, see extended profile in the Pod Provisioning service.

WebID Profile Document Constraints#

ESS enforces the following constraints on the RDF data model in the WebID Profile:

  • The document must contain the following solid:oidcIssuer triple :

    <WebID URL> solid:oidcIssuer <defaultIssuer URL> .
    

    where

    • <WebID URL> is the agent’s WebID

    • <defaultIssuer URL> is the configured INRUPT_WEBID_ISSUER value.

  • For all solid:oidcIssuer triples,

    • The subject must be the agent’s WebID URL.

    • The object must be a valid HTTP(S) URL.

  • If an rdf:type triple is present in the WebID Profile Document, its value must be one of:

    • foaf:Agent

    • foaf:Group

    • foaf:Person

    • foaf:Organization

    where foaf: is the namespace prefix for http://xmlns.com/foaf/0.1/.

    For example,

    <WebID URL> a foaf:Agent.
    
  • For any foaf:isPrimaryTopicOf triples, the object must be an HTTP(S) URL.

  • For any pim:storage triples, the object must be an HTTP(S) URL.

ESS allows any other RDF triples, without constraints, in the WebID profile.

WebID Profile Document Endpoints#

The WebID service provides various endpoints for managing (get, create, replace, add storage info, delete) the WebID profile document.

Authentication and Authorization Requirements#

The operations to modify the WebID profile (create, replace, update with storage info, delete) have authentication and authorization requirements:

  • The access token must include a webid claim that matches the specified WebID https://id.{ESS DOMAIN}/{username} of the endpoint.

  • The issuer (iss) claim in the token must be included in the configured INRUPT_JWT_ISSUER_ALLOW_LIST.

    Tokens issued by other issuers will be rejected with a 401 Unauthorized error.

  • The authorized party (azp) claim in the token must be included in the configured INRUPT_WEBID_ALLOWED_CLIENT_IDS.

    This prevents arbitrary clients from modifying WebID Profile Documents. Multiple Client Identifiers can be listed by separating these URLs with commas.

Fetch a Profile Document#

A client can retrieve the profile associated with a WebID by issuing a GET request to the WebID:

Method:

GET

Endpoint:

https://id.{ESS DOMAIN}/{username}

Accept:

text/turtle

Body:

N/A

Content-Type:

N/A

Tip

Per the WebID draft specification, an HTTP request on the WebID can return a redirect status (303) along with the profile document URL in the Location header.

As such, a client may need to handle the HTTP redirection according to its needs (e.g., follow the redirect automatically or error).

Alternatively, if the profile document URL is the WebID with a file extension (e.g., .ttl, .jsonld), you can issue a GET request directly to the profile document URL.

Upon successful fetch, the response includes a status of 200 OK (including when the client automatically follows the redirect) and the profile document in its body.

Create a Profile Document#

Important

The operation has authentication and authorization requirements. See Authentication and Authorization Requirements.

To create a WebID profile document if one does not already exist for the WebID, issue a POST request to the WebID:

Method:

POST

Endpoint:

https://id.{ESS DOMAIN}/{username}

Body:

N/A

Content-Type:

N/A

Note

If the WebID profile document already exists, the POST request returns a 400 Bad Request error.

Upon successful creation of a WebID profile document, the response includes a status of 201 Created. The newly created WebID profile document has the following content:

@prefix foaf: <http://xmlns.com/foaf/0.1/>.
@prefix solid: <http://www.w3.org/ns/solid/terms#>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.

<https://id.{ESS DOMAIN}/{username}> a foaf:Agent;
    solid:oidcIssuer <{WEBID_ISSUER}/>.

Where the {WEBID_ISSUER} is the configured INRUPT_WEBID_ISSUER value.

Replace a Profile Document#

Important

The operation has authentication and authorization requirements. See Authentication and Authorization Requirements.

To replace an existing WebID profile document, issue a PUT request with a valid replacement profile document to the WebID:

Method:

PUT

Endpoint:

https://id.{ESS DOMAIN}/{username}

Body:

A profile document that conform to the WebID service’s constraints.

If the document does not conform to the service constraints, a 400 Bad Request error is returned.

Content-Type:

text/turtle

Upon successful update, the response includes a status of 204 No Content.

Add Pod Location to Profile Document#

Important

The operation has authentication and authorization requirements. See Authentication and Authorization Requirements.

To add a Pod Location to a WebID profile document, issue a POST request to the {WebID}/provision endpoint:

Method:

POST

Endpoint:

https://id.{ESS DOMAIN}/{username}/provision

Body:

A JSON document:

{
   "@context": {
      "id":"@id",
      "storage":{
         "@type":"@id",
         "@id":"http://www.w3.org/ns/pim/space#storage"
      },
      "profile":{
         "@type":"@id",
         "@id":"http://xmlns.com/foaf/0.1/isPrimaryTopicOf"
      }
   },
   "id":"{WebID}",
   "profile":"{extended Profile Resource stored on the Pod}",
   "storage":"{HTTP(S) Pod URL}"
}

See also Pod Provisioning service.

Content-Type:

application/json

Delete a Profile Document#

Important

The operation has authentication and authorization requirements. See Authentication and Authorization Requirements.

To delete a WebID profile document, issue a DELETE request to the WebID:

Method:

DELETE

Endpoint:

https://id.{ESS DOMAIN}/{username}

Body:

N/A

Content-Type:

N/A

Upon successful delete, the response includes a status of 204 No Content.

WebID Service Configuration#

As part of the installation process, Inrupt provides base Kustomize overlays and associated files that require deployment-specific configuration inputs.

The following configuration options are available for the service and may be set as part of updating the inputs for your deployment. The Inrupt-provided base Kustomize overlays may be using updated configuration values that differ from the default values.

Required#

These WebID service configuration options are set as part of updating the inputs for your deployment.

INRUPT_PROVISION_HTTP_BASE_URL#

The base URL of the Pod Provisioning Service. This is used by the WebID Service to link to the Pod Provisioning Service.

Important

The value requires a trailing slash /; e.g., https://provision.{ESS_DOMAIN}/.

INRUPT_START_CLIENT_ID#

Default: https://start.{ESS_DOMAIN}/app/id

The URL of the application hosted on the Start Service. The start app can handle:

  • Sign up/log in with the Identity Provider, and

  • Provisioning of the WebID and a Pod as part of the flow.

INRUPT_WEBID_CLIENT_ID#

Default: https://id.{ESS_DOMAIN}/app/id

The URL of the WebID editor application.

INRUPT_WEBID_ALLOWED_CLIENT_IDS#

Default: INRUPT_START_CLIENT_ID, INRUPT_WEBID_CLIENT_ID

Comma-delimited list of Solid-OIDC Client Identifiers. The list determines which clients are authorized to modify the WebID profile documents.

INRUPT_WEBID_ISSUER#

Default: https://openid.{ESS DOMAIN}

The required issuer that must appear in the WebID profile documents. See WebID Profile Document Constraints.

Tip

Ensure this issuer is in the INRUPT_JWT_ISSUER_ALLOW_LIST

INRUPT_JWT_ISSUER_ALLOW_LIST#

A comma-separated list of trusted Solid-OIDC issuers (i.e., identity providers).

Ensure that INRUPT_JWT_ISSUER_ALLOW_LIST includes the configured INRUPT_WEBID_ISSUER. See also INRUPT_JWT_ISSUER_DENY_LIST.

QUARKUS_DATASOURCE_JDBC_URL#

The JDBC connection string for the persistence datasource. For example, jdbc:postgresql://HOSTNAME/DATABASE-NAME.

QUARKUS_DATASOURCE_USERNAME#

The username for connecting to the persistence datasource.

QUARKUS_DATASOURCE_PASSWORD#

The password for connecting to the persistence datasource.

Kafka Configuration#

KAFKA_BOOTSTRAP_SERVERS#

Default: localhost:9092

Comma-delimited list of Kafka broker servers for use by ESS services, iincluding this service.

Setting KAFKA_BOOTSTRAP_SERVERS configures ESS to use the same Kafka instance(s) for all its Kafka message channels (e.g., solidresource and auditv1out message channels). This service uses the auditv1out message channel.

Note

Inrupt-provided overlays default to using KAFKA_BOOTSTRAP_SERVERS.

To use a different Kafka instance for the auditv1out channel, use specific message channel configuration.

See also ESS’ Kafka Configuration.

INRUPT_KAFKA_AUDITV1EVENTSENCRYPTED_CIPHER_PASSWORD#

The strong cipher key to use when running auditing with encrypted messages.

Optional#

QUARKUS_LOG_LEVEL#

Default: INFO

Logging level.

INRUPT_WEBID_CLIENT_NAME#

Default: Inrupt WebID Manager

The name of the client associated with the default Solid-OIDC Client ID. See INRUPT_WEBID_ALLOWED_CLIENT_IDS.

INRUPT_WEBID_CLIENT_LOGO_URI#

Default: https://{ESS DOMAIN}/logo.png

The application logo for the client associated with the default Solid-OIDC Client ID. See INRUPT_WEBID_ALLOWED_CLIENT_IDS.

INRUPT_WEBID_CLIENT_TOS_URI#

The URL for a terms of service document for the client associated with the default Solid-OIDC Client ID. See INRUPT_WEBID_ALLOWED_CLIENT_IDS.

INRUPT_WEBID_CLIENT_CONTACTS#

A comma-delimited list of contacts (either email addresses or WebID URLs) for the client associated with the default Solid-OIDC Client ID. See INRUPT_WEBID_ALLOWED_CLIENT_IDS.

INRUPT_JWT_ISSUER_DENY_LIST#

A comma-separated list of disallowed Solid-OIDC issuers.