solid · csarven · Dec 15, 2021 · Nov 17, 2021 · Nov 17, 2021 · Nov 17, 2021
diff --git a/protocol.html b/protocol.html
@@ -348,7 +348,7 @@ <h3 property="schema:name skos:prefLabel">Terminology</h3>
 
                   <p property="skos:definition">The Solid Protocol specification defines the following terms. These terms are referenced throughout this specification.</p>
 
-                  <span rel="skos:hasTopConcept"><span resource="#data-pod"></span><span resource="#solid-app"></span><span resource="#uri"></span><span resource="#resource"></span><span resource="#container-resource"></span><span resource="#root-container"></span><span resource="#agent"></span><span resource="#owner"></span><span resource="#origin"></span><span resource="#read-operation"></span><span resource="#write-operation"></span><span resource="#append-operation"></span></span>
+                  <span rel="skos:hasTopConcept"><span resource="#data-pod"></span><span resource="#solid-app"></span><span resource="#uri"></span><span resource="#resource"></span><span resource="#container-resource"></span><span resource="#root-container"></span><span resource="#authoritative-information"></span><span resource="#agent"></span><span resource="#owner"></span><span resource="#origin"></span><span resource="#read-operation"></span><span resource="#write-operation"></span><span resource="#append-operation"></span></span>
 
                   <dl>
                     <dt about="#data-pod" property="skos:prefLabel" typeof="skos:Concept"><dfn id="data-pod">data pod</dfn></dt>
@@ -369,6 +369,9 @@ <h3 property="schema:name skos:prefLabel">Terminology</h3>
                     <dt about="#root-container" property="skos:prefLabel" typeof="skos:Concept"><dfn id="root-container">root container</dfn></dt>
                     <dd about="#root-container" property="skos:definition">A root container is a container resource that is at the highest level of the collection hierarchy.</dd>
 
+                    <dt about="#authoritative-information" property="skos:prefLabel" typeof="skos:Concept"><dfn id="authoritative-information">authoritative information</dfn></dt>
+                    <dd about="#authoritative-information" property="skos:definition">Authoritative information encompasses data about resources described by means of RDF statements [<cite><a class="bibref" href="#bib-rdf11-concepts">RDF11-CONCEPTS</a></cite>] supplied by clients, servers, and intermediaries</dd>
+
                     <dt about="#agent" property="skos:prefLabel" typeof="skos:Concept"><dfn id="agent">agent</dfn></dt>
                     <dd about="#agent" property="skos:definition">An agent is a person, social entity, or software identified by a URI; e.g., a WebID denotes an agent [<cite><a class="bibref" href="#bib-webid">WEBID</a></cite>].</dd>
 
@@ -428,6 +431,16 @@ <h3 property="schema:name">Namespaces</h3>
                         <td>http://www.w3.org/ns/auth/acl#</td>
                         <td>ACL Ontology</td>
                       </tr>
+                      <tr>
+                        <td>dcterms</td>
+                        <td>http://purl.org/dc/terms/</td>
+                        <td>[<cite><a class="bibref" href="#bib-dc-terms">DC-TERMS</a></cite>]</td>
+                      </tr>
+                      <tr>
+                        <td>stat</td>
+                        <td>http://www.w3.org/ns/posix/stat</td>
+                        <td>POSIX File Status</td>
+                      </tr>
                     </tbody>
                   </table>
                 </div>
@@ -559,6 +572,40 @@ <h3 property="schema:name">Resource Containment</h3>
                   <p id="server-hierarchical-containment">There is a 1-1 correspondence between containment triples and relative reference within the path name hierarchy. [<a href="https://github.com/solid/specification/issues/98#issuecomment-547506617" rel="cito:citesAsSourceDocument">Source</a>]. It follows that all resources are discoverable from a container and that it is not possible to create orphan resources. [<a href="https://github.com/solid/specification/issues/97#issuecomment-547459396" rel="cito:citesAsSourceDocument">Source</a>]</p>
 
                   <p><span about="" id="server-basic-container" rel="spec:requirement" resource="#server-basic-container"><span property="spec:statement">The representation and behaviour of containers in Solid corresponds to LDP Basic Container and <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> be supported by <span rel="spec:requirementSubject" resource="spec:Server">server</span>.</span></span> [<a href="https://github.com/solid/specification/issues/47#issuecomment-561675764" rel="cito:citesAsSourceDocument">Source</a>]</p>
+
+                  <section id="authoritative-resource-data" inlist="" rel="schema:hasPart" resource="#authoritative-resource-data">
+                    <h4 property="schema:name">Authoritative Resource Data</h4>
+                    <div datatype="rdf:HTML" property="schema:description">
+                      <p>Container descriptions are not limited to containment triples. To further support client navigation and application interaction, servers can include <a href="#authoritative-information">authoritative information</a> about contained resources as part of the container description.</p>
+
+                      <p><span about="" id="authoritative-contained-resource-data" rel="spec:requirement" resource="authoritative-contained-resource-data"><span property="spec:statement"><span rel="spec:requirementSubject" resource="spec:Server">Servers</span> <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> include the following information about contained resources as part of the container description, unless that information does not exist or is expensive to determine:</span></span></p>
+
+                      <dl>
+                        <dt><code>rdf:type</code></dt>
+                        <dd>A class whose URI formed by concatenating <code>http://www.w3.org/ns/iana/media-types/</code>, the IANA Media Type [<cite><a class="bibref" href="#bib-iana-media-types">IANA-MEDIA-TYPES</a></cite>] of the resource, and <code>#Resource</code>.</dd>
+                        <dt><code>stat:size</code></dt>
+                        <dd>A non-negative integer giving the size of the resource in bytes.</dd>
+                        <dt><code>dcterms:modified</code></dt>
+                        <dd>The time when the resource was last modified.</dd>
+                        <dt><code>stat:mtime</code></dt>
+                        <dd>The Unix time when the resource was last modified.</dd>
+                      </dl>
+
+                      <div class="note" id="authoritative-resource-data-logically-part-of-container-description" inlist="" rel="schema:hasPart" resource="#authoritative-resource-data-logically-part-of-container-description">
+                        <h5 property="schema:name"><span>Note</span>: Authoritative Resource Data Logically Part of Container Description</h5>
+                        <div datatype="rdf:HTML" property="schema:description">
+                          <p>Authoritative data about contained resources is logically part of the container. Servers are encouraged to consider omitting authoritative data about a contained resource when agent is unauthorized to read the contained resource.</p>
+                        </div>
+                      </div>
+
+                      <p><span about="" id="contained-resource-state-cascading" rel="spec:requirement" resource="#contained-resource-state-cascading"><span property="spec:statement">When the state of a contained resource changes, the <span rel="spec:requirementSubject" resource="spec:Server">servers</span> <span rel="spec:requirementLevel" resource="spec:MUST-NOT">MUST NOT</span> expose any authoritative information that has a cascading potential to its immediate container.</span></span></p>
+
+                      <p>Authoritative data about contained resources is <a href="#server-protect-authoritative-resource-data">protected by the server</a>.</p>
+
+                      <p>[<a href="https://github.com/solid/specification/issues/227" rel="cito:citesAsSourceDocument">Source</a>]
+                      [<a href="https://github.com/solid/specification/issues/343" rel="cito:citesAsSourceDocument">Source</a>]</p>
+                    </div>
+                  </section>
                 </div>
               </section>
 
@@ -708,6 +755,8 @@ <h3 property="schema:name">Writing Resources</h3>
 
                   <p><span about="" id="server-protect-containment" rel="spec:requirement" resource="#server-protect-containment"><span property="spec:statement"><span rel="spec:requirementSubject" resource="spec:Server">Servers</span> <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> NOT allow HTTP <code>POST</code>, <code>PUT</code> and <code>PATCH</code> to update a container’s containment triples; if the server receives such a request, it <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> respond with a <code>409</code> status code.</span></span> [<a href="https://github.com/solid/specification/issues/40#issuecomment-573358652" rel="cito:citesAsSourceDocument">Source</a>]</p>
 
+                  <p><span about="" id="server-protect-authoritative-resource-data" rel="spec:requirement" resource="#server-protect-authoritative-resource-data"><span property="spec:statement"><span rel="spec:requirementSubject" resource="spec:Server">Servers</span> <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> NOT allow HTTP <code>POST</code>, <code>PUT</code> and <code>PATCH</code> to update the <a href="#authoritative-resource-data">authoritative resource data</a>; if the server receives such a request, it MUST respond with a <code>409</code> status code.</span></span> [<a href="https://github.com/solid/specification/issues/227#issuecomment-919312592" rel="cito:citesAsSourceDocument">Source</a>]</p>
+
                   <div class="note" id="conditional-update" inlist="" rel="schema:hasPart" resource="#conditional-update">
                     <h4 property="schema:name"><span>Note</span>: Conditional Update</h4>
                     <div datatype="rdf:HTML" property="schema:description">
@@ -1052,8 +1101,12 @@ <h2 property="schema:name">References</h2>
                 <h3 property="schema:name">Normative References</h3>
                 <div datatype="rdf:HTML" property="schema:description">
                   <dl class="bibliography" resource="">
+                    <dt id="bib-dc-terms">[DC-TERMS]</dt>
+                    <dd><a href="http://dublincore.org/documents/2010/10/11/dcmi-terms/" rel="cito:citesAsAuthority"><cite>Dublin Core Metadata Terms, version 1.1</cite></a>. DCMI Usage Board.  DCMI. 11 October 2010. DCMI Recommendation. URL: <a href="http://dublincore.org/documents/2010/10/11/dcmi-terms/">http://dublincore.org/documents/2010/10/11/dcmi-terms/</a></dd>
                     <dt id="bib-fetch">[FETCH]</dt>
                     <dd><a href="https://fetch.spec.whatwg.org/" rel="cito:citesAsAuthority"><cite>Fetch Standard</cite></a>. Anne van Kesteren.  WHATWG. Living Standard. URL: <a href="https://fetch.spec.whatwg.org/">https://fetch.spec.whatwg.org/</a></dd>
+                    <dt id="bib-iana-media-types">[IANA-MEDIA-TYPES]</dt>
+                    <dd><a href="https://www.iana.org/assignments/media-types/" rel="cito:citesAsAuthority"><cite>Media Types</cite></a>.  IANA. URL: <a href="https://www.iana.org/assignments/media-types/">https://www.iana.org/assignments/media-types/</a></dd>
                     <dt id="bib-json-ld11">[JSON-LD11]</dt>
                     <dd><a href="https://www.w3.org/TR/json-ld11/" rel="cito:citesAsAuthority"><cite>JSON-LD 1.1</cite></a>. Gregg Kellogg; Pierre-Antoine Champin; Dave Longley.  W3C. 16 July 2020. W3C Recommendation. URL: <a href="https://www.w3.org/TR/json-ld11/">https://www.w3.org/TR/json-ld11/</a></dd>
                     <dt id="bib-ldn">[LDN]</dt>