- Created by Collin Brittle, last modified by Jared Whiklo on Feb 11, 2018
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Fedora's alignment with each category of the Fedora API Specification needs to be verified for completeness and correctness. Below is a listing of the specification categories, the person/people taking the lead on ensuring alignment, and the current status of alignment.
Legend
- Untested
- Tested, working
- Tested, not working
- Tested, not applicable
- Needs review
Environment
- Version of Fedora: 6034a73
- Version of Fedora Specification: e6fc281
- Test Compatibility Suite
- Legacy - Version of script: 9d20fad (repo and usage here: https://github.com/rotated8/fedora-spec-testing)
3 Resource Management
Lead
3.1 General
- Empty section
3.1.1 LDP Containers (Jared Whiklo)
- MUST be able to create LDP Containers: Tested in 3.3
- MUST distinguish between triple types OR MUST return 409 with constrainedBy Link in headers for ldp:contains membership predicate if server cannot distinguish between triple types
- We return a 409 because we can't distinguish and therefore the next 2 tests are not applicable.
- MAY permit ldp:contains membership predicate if server can distinguish between triple types
- SHOULD allow Prefer header in request to distinguish triple types if server can distinguish triple types
3.1.2 LDP-NR creation
- SHOULD create an LDP-NR if creation request includes NonRDFSource type Link in headers, regardless of Content-Type headers
- Returns a 400 when attempting to POST with Link: http://www.w3.org/ns/ldp#NonRDFSource; rel="type"
3.2 HTTP PATCH
- MUST be supported on LDP-RSs
- MUST support sparqlupdate
- MAY support other update types
- MUST return 4xx (409), with more info in body and constrainedBy Link in headers when modifying protected resource statements
- MUST return 2xx if successful
3.2.1 Interaction models
- MUST return 409 when modifying the interaction model to a type that is not a subtype of the current type (LDP-NR to LDP-RS or opposite?)
- I can add an rdf:type of ldp:NonRDFSource to an existing ldp:RDFSource, but I cannot remove the ldp:RDFSource type
3.3 HTTP POST
- MUST be supported on LDP Collections
- MUST include default interaction model in constrainedBy Link header
- LDP-RS only, LDP-NR does not return correct Link header
- MUST support creation of LDP-NRs
- MUST create and associate an LDP-RS when an LDP-NR is created
3.3.1 LDP-NRs
- MUST return 409 if request Digest header does not match calculated value for content of new LDP-NR
- SHOULD return 400 if request Digest header's type is not supported (Should 'type' be 'algorithm', like the RFC?)
3.4 HTTP PUT
- MAY include type Link header in request
- MUST return 409 if request's type Link is not resource's current type or subtype thereof, or not in LDP namespace
- MUST change resource's type if request's type Link is a subtype of resource's current type
- MUST change resource's interaction model if request's type Link has an LDP interaction model
3.4.1 LDP-RSs
- MUST be supported on LDP-RSs for non-server-managed triples
- MUST return 4xx (409), with more info in body and constrainedBy Link in headers if request modifies server-managed triples (Are triples different than resource statements?) on a LDP-RS
3.4.2 LDP-NRs
- MUST be supported on LDP-NRs to replace binary content
- MUST return 409 if request Digest header does not match calculated value for new content of target LDP-NR
- SHOULD return 400 if request Digest header's type is not supported (Should 'type' be 'algorithm', like the RFC?)
3.4.3 Creating resources with HTTP PUT
- Non-normative section
3.5 HTTP GET
- MUST return describes Link to LDP-NR if request is to associated LDP-RS
3.5.1 Additional values for the Prefer header
- MAY support PreferContainedDescriptions URI in Prefer header
- SHOULD support PreferInboundReferences URI in Prefer header
3.5.2 LDP-RSs
- MUST return Preference-Applied header if request's Prefer header is honored (Always applied)
3.5.3 LDP-NRs
- MUST return Digest header as directed by request's Want-Digest header
3.6 HTTP HEAD
- MUST NOT return a body
- SHOULD return same headers as if the request was a GET
- MUST return a Digest header if the same request as a GET would have
- MAY omit payload headers from response
3.7 HTTP DELETE
- MAY be supported
3.7.1 Depth header
- MUST support a Depth header in the request, if DELETE is implemented
- MAY support only certain Depth header values: (How to query?)
- MUST return 400 if request includes Depth header and unsupported Depth header value: (How to query?)
- MUST use LDP containment relations for recursive deletion, if recursive deletion is supported: (How to query?)
3.8 External Binary Content
- MUST return message/external-body in Accept-Post header (for each supported access-type param of supported Content-Types) if external binary content is supported (In response to what?)
- MUST return 415 for LDP-NR create or update if request has message/external-body and an unsupported access-type, or if external binary content is not supported
- MUST NOT accept request (return 4xx???) for LDP-NR create or update if request has message/external-body and the server cannot return all the required response headers
- SHOULD return a Content-Location header for LDP-NR GET or HEAD (read? to match create or update above) with a URI to the content if the server is proxying: (How to query for proxying?)
- MAY support an expiration parameter (for LDP-NR create or update?) if the request has a message/external-body Content-Type header
- SHOULD copy content (for LDP-NR create or update?) if the request has a message/external-body Content-Type header and the expiration parameter is set
- MUST return 4xx or 5xx (for LDP-NR create or update?) if the request has a message/external-body Content-Type header and the expiration parameter cannot be accommodated
- MUST return a contrainedBy Link header (for LDP-NR create or update?) if the response status is 4xx: Tested in 3.2 and 3.3
3.8.1 Referenced RDF content in mandataory LDP serializations
- Non-normative section
3.8.2 Proxied content vs. redirected content
- Non-normative section
4 Versioning
Leads
empty
5 Resource Authorization
Leads
5. Resource Authorization §
- To configure access control restrictions, implementations MUST follow the recommendations of Web Access Control [SOLIDWEBAC] with the following additional requirements:
5.1 ACLs are LDP RDF Sources §
5.2 ACL Representation and Interpretation §
- Implementations MUST inspect the ACL RDF for authorizations.
- Implementations MUST use only statements associated with an authorization in the ACL RDF to determine access, except in the case of
acl:agentGroup
statements where the group listing document is dereferenced. - The authorizations MUST be examined to see whether they grant the requested access to the controlled resource.
- If none of the authorizations grant the requested access then the request MUST be denied.
5.3 ACLs are discoverable via Link Headers §
- A conforming server MUST advertise the individual resource ACL for every controlled resource in HTTP responses with a
rel="acl"
link in theLink
header, whether or not the ACL exists. - The ACL resource SHOULD be located in the same server as the controlled resource.
5.4 ACL linking on resource creation §
- A client HTTP
POST
orPUT
request to create a new LDPR MAY include arel="acl"
link in theLink
header referencing an existing LDP-RS to use as the ACL for the new LDPR. - The server MUST reject the request and respond with a 4xx or 5xx range status code, such as 409 (Conflict) if it isn't able to create the LDPR with the specified LDP-RS as the ACL.
- In that response, the restrictions causing the request to fail MUST be described in a resource indicated by a
rel="http://www.w3.org/ns/ldp#constrainedBy"
link in theLink
response header, following the pattern of [LDP] 4.2.1.6.
5.5 Cross-Domain ACLs §
- Implementations MAY restrict support for ACLs to local resources.
- If an implementation chooses to reject requests concerning remote ACLs,
- it MUST respond with a 4xx range status code
- and MUST advertise the restriction with a
rel="http://www.w3.org/ns/ldp#constrainedBy"
link in theLink
response header.
5.6 Cross-Domain Group Listings §
- Implementations MAY restrict support for [SOLIDWEBAC] groups of agents to local Group Listing documents.
- If an implementation chooses to reject requests concerning remote Group Listings,
- it MUST respond with a 4xx range status code
- and MUST advertise the restriction with a
rel="http://www.w3.org/ns/ldp#constrainedBy"
link in theLink
response header.
5.7 Append Mode §
- In the context of a Fedora implementation,
acl:Append
should be understood as operations that only append, such asPOST
ing to a container, or performing aPATCH
that only adds triples.
5.7.1 LDP-RS §
- When a client is allowed to perform
acl:Append
operations on an LDP-RS:- A
DELETE
request MUST be denied - A
PATCH
request that deletes triples MUST be denied - A
PATCH
request that only adds triples SHOULD be allowed - A
PUT
request on an existing resource MUST be denied - A
PUT
request to create a new resource MUST be allowed if the implementation supports creating resources usingPUT
(see: 3.6.3 Creating resources with HTTP PUT)
- A
5.7.2 LDPC §
- In addition to requirements in 5.7.1 LDP-RS, when a client is allowed to perform
acl:Append
operations on an LDPC, aPOST
request MUST be allowed.
5.7.3 LDP-NR §
- When a client is allowed to perform
acl:Append
operations on an LDP-NR:- All
DELETE
,POST
, andPUT
requests MUST be denied - A
PATCH
request that deletes or modifies existing content MUST be denied - A
PATCH
request that only adds content SHOULD be allowed
- All
5.8 Access To Class §
- Notwithstanding [SOLIDWEBAC]'s lack of support for it, the
acl:accessToClass
predicate MUST be supported. - When an ACL includes an
acl:accessToClass
statement, it gives access to all resources with the specified type, whether that type is client-managed or server-managed. - An implementation MAY use inference to infer types not present in a resource's triples or
rel="type"
links in theLink
header.
5.9 Inheritance and Default ACLs §
- Inheritance of ACLs in Fedora implementations is defined by the [SOLIDWEBAC] ACL Inheritance Algorithm and MUST be reckoned along the [LDP] containment relationships linking controlled resources, with the following modification:
6 Notifications
Lead
empty
7 Binary Resource Fixity
Lead
- No labels