Accept-Patch Accept-Post Accept-Put headers

lib/create-app.js

@@ -32,7 +32,7 @@ const corsSettings = cors({
   methods: [
     'OPTIONS', 'HEAD', 'GET', 'PATCH', 'POST', 'PUT', 'DELETE'
   ],
-  exposedHeaders: 'Authorization, User, Location, Link, Vary, Last-Modified, ETag, Accept-Patch, Accept-Post, Updates-Via, Allow, WAC-Allow, Content-Length, WWW-Authenticate, MS-Author-Via, X-Powered-By',
+  exposedHeaders: 'Authorization, User, Location, Link, Vary, Last-Modified, ETag, Accept-Patch, Accept-Post, Accept-Put, Updates-Via, Allow, WAC-Allow, Content-Length, WWW-Authenticate, MS-Author-Via, X-Powered-By',
   credentials: true,
   maxAge: 1728000,
   origin: true,

lib/handlers/get.js

@@ -27,8 +27,13 @@ async function handler (req, res, next) {
   const requestedType = negotiator.mediaType()
   const possibleRDFType = negotiator.mediaType(RDFs)
 
+  // deprecated kept for compatibility
   res.header('MS-Author-Via', 'SPARQL')
 
+  res.header('Accept-Patch', 'text/n3, application/sparql-update, application/sparql-update-single-match')
+  res.header('Accept-Post', '*/*')
+  if (!path.endsWith('/') && !glob.hasMagic(path)) res.header('Accept-Put', '*/*')
+
   // Set live updates
   if (ldp.live) {
     res.header('Updates-Via', ldp.resourceMapper.resolveUrl(req.hostname).replace(/^http/, 'ws'))
@@ -49,6 +54,8 @@ async function handler (req, res, next) {
   try {
     ret = await ldp.get(options, req.accepts(['html', 'turtle', 'rdf+xml', 'n3', 'ld+json']) === 'html')
   } catch (err) {
+    // set Accept-Put if container do not exist
+    if (err.status === 404 && path.endsWith('/')) res.header('Accept-Put', 'text/turtle')
     // use globHandler if magic is detected
     if (err.status === 404 && glob.hasMagic(path)) {
       debug('forwarding to glob request')

lib/handlers/options.js

@@ -8,7 +8,7 @@ module.exports = handler
 function handler (req, res, next) {
   linkServiceEndpoint(req, res)
   linkAuthProvider(req, res)
-  linkSparqlEndpoint(res)
+  linkAcceptEndpoint(res)
 
   res.status(204)
 
@@ -28,6 +28,8 @@ function linkServiceEndpoint (req, res) {
   addLink(res, serviceEndpoint, 'service')
 }
 
-function linkSparqlEndpoint (res) {
-  res.header('Accept-Patch', 'application/sparql-update')
+function linkAcceptEndpoint (res) {
+  res.header('Accept-Patch', 'text/n3, application/sparql-update, application/sparql-update-single-match')
+  res.header('Accept-Post', '*/*')
+  res.header('Accept-Put', '*/*')
 }

lib/handlers/patch.js

@@ -39,7 +39,6 @@ function contentForNew (contentType) {
 // Handles a PATCH request
 async function patchHandler (req, res, next) {
   debug(`PATCH -- ${req.originalUrl}`)
-  res.header('MS-Author-Via', 'SPARQL')
   try {
     // Obtain details of the target resource
     const ldp = req.app.locals.ldp
@@ -77,7 +76,7 @@ async function patchHandler (req, res, next) {
     if (!parsePatch) {
       throw error(415, `Unsupported patch content type: ${patch.contentType}`)
     }
-
+    res.header('Accept-Patch', patch.contentType) // is this needed ?
     // Parse the patch document and verify permissions
     const patchObject = await parsePatch(url, patch.uri, patch.text)
     await checkPermission(req, patchObject, resourceExists)

lib/handlers/put.js

@@ -8,7 +8,8 @@ const { stringToStream } = require('../utils')
 
 async function handler (req, res, next) {
   debug(req.originalUrl)
-  res.header('MS-Author-Via', 'SPARQL')
+  // deprecated kept for compatibility
+  res.header('MS-Author-Via', 'SPARQL') // is this needed ?
   const contentType = req.get('content-type')
 
   // check whether a folder or resource with same name exists

test/integration/header-test.js

@@ -20,7 +20,7 @@ describe('Header handler', () => {
     request = supertest(server)
   })
 
-  describe('MS-Author-Via', () => {
+  describe('MS-Author-Via', () => { // deprecated
     describeHeaderTest('read/append for the public', {
       resource: '/public-ra',
       headers: {
@@ -30,6 +30,18 @@ describe('Header handler', () => {
     })
   })
 
+  describe('Accept-* for a resource document', () => {
+    describeHeaderTest('read/append for the public', {
+      resource: '/public-ra',
+      headers: {
+        'Accept-Patch': 'text/n3, application/sparql-update, application/sparql-update-single-match',
+        'Accept-Post': '*/*',
+        'Accept-Put': '*/*',
+        'Access-Control-Expose-Headers': /(^|,\s*)Accept-Patch, Accept-Post, Accept-Put(,|$)/
+      }
+    })
+  })
+
   describe('WAC-Allow', () => {
     describeHeaderTest('read/append for the public', {
       resource: '/public-ra',

test/integration/http-test.js

@@ -110,26 +110,32 @@ describe('HTTP APIs', function () {
           .expect('Access-Control-Allow-Origin', 'http://example.com')
           .expect('Access-Control-Allow-Credentials', 'true')
           .expect('Access-Control-Allow-Methods', 'OPTIONS,HEAD,GET,PATCH,POST,PUT,DELETE')
-          .expect('Access-Control-Expose-Headers', 'Authorization, User, Location, Link, Vary, Last-Modified, ETag, Accept-Patch, Accept-Post, Updates-Via, Allow, WAC-Allow, Content-Length, WWW-Authenticate, MS-Author-Via, X-Powered-By')
+          .expect('Access-Control-Expose-Headers', 'Authorization, User, Location, Link, Vary, Last-Modified, ETag, Accept-Patch, Accept-Post, Accept-Put, Updates-Via, Allow, WAC-Allow, Content-Length, WWW-Authenticate, MS-Author-Via, X-Powered-By')
           .expect(204, done)
       })
 
-    describe('Accept-Patch header', function () {
+    describe('Accept-* headers', function () {
       it('should be present for resources', function (done) {
         server.options('/sampleContainer/example1.ttl')
-          .expect('Accept-Patch', 'application/sparql-update')
+          .expect('Accept-Patch', 'text/n3, application/sparql-update, application/sparql-update-single-match')
+          .expect('Accept-Post', '*/*')
+          .expect('Accept-Put', '*/*')
           .expect(204, done)
       })
 
       it('should be present for containers', function (done) {
         server.options('/sampleContainer/')
-          .expect('Accept-Patch', 'application/sparql-update')
+          .expect('Accept-Patch', 'text/n3, application/sparql-update, application/sparql-update-single-match')
+          .expect('Accept-Post', '*/*')
+          .expect('Accept-Put', '*/*')
           .expect(204, done)
       })
 
       it('should be present for non-rdf resources', function (done) {
         server.options('/sampleContainer/solid.png')
-          .expect('Accept-Patch', 'application/sparql-update')
+          .expect('Accept-Patch', 'text/n3, application/sparql-update, application/sparql-update-single-match')
+          .expect('Accept-Post', '*/*')
+          .expect('Accept-Put', '*/*')
           .expect(204, done)
       })
     })
@@ -329,6 +335,11 @@ describe('HTTP APIs', function () {
       server.get('/invalidfile.foo')
         .expect(404, done)
     })
+    it('should return 404 for non-existent container', function (done) { // alain
+      server.get('/inexistant/')
+        .expect('Accept-Put', 'text/turtle')
+        .expect(404, done)
+    })
     it('should return basic container link for directories', function (done) {
       server.get('/')
         .expect('Link', /http:\/\/www.w3.org\/ns\/ldp#BasicContainer/)
@@ -411,13 +422,39 @@ describe('HTTP APIs', function () {
         .expect('content-type', /text\/turtle/)
         .end(done)
     })
-    it('should still redirect to the right container URI if missing / and HTML is requested',
-      function (done) {
-        server.get('/sampleContainer')
-          .set('accept', 'text/html')
-          .expect('location', /\/sampleContainer\//)
-          .expect(301, done)
+    it('should still redirect to the right container URI if missing / and HTML is requested', function (done) {
+      server.get('/sampleContainer')
+        .set('accept', 'text/html')
+        .expect('location', /\/sampleContainer\//)
+        .expect(301, done)
+    })
+
+    describe('Accept-* headers', function () {
+      it('should return 404 for non-existent resource', function (done) {
+        server.get('/invalidfile.foo')
+          .expect('Accept-Patch', 'text/n3, application/sparql-update, application/sparql-update-single-match')
+          .expect('Accept-Post', '*/*')
+          .expect('Accept-put', '*/*')
+          .expect(404, done)
+      })
+      it('Accept-Put=text/turtle for non-existent container', function (done) {
+        server.get('/inexistant/')
+          .expect('Accept-Patch', 'text/n3, application/sparql-update, application/sparql-update-single-match')
+          .expect('Accept-Post', '*/*')
+          .expect('Accept-Put', 'text/turtle')
+          .expect(404, done)
       })
+      it('Accept-Put header do not exist for existing container', (done) => {
+        server.get('/sampleContainer/')
+          .expect(200)
+          .expect('Accept-Patch', 'text/n3, application/sparql-update, application/sparql-update-single-match')
+          .expect('Accept-Post', '*/*')
+          .expect((res) => {
+            if (res.headers['Accept-Put']) return done(new Error('Accept-Put header should not exist'))
+          })
+          .end(done)
+      })
+    })
   })
 
   describe('HEAD API', function () {

test/integration/patch-test.js

@@ -22,7 +22,7 @@ const serverOptions = {
   forceUser: `${serverUri}/profile/card#me`
 }
 
-describe('PATCH', () => {
+describe('PATCH through text/n3', () => {
   let request
   let server