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<title>[36829] trunk: OPTIONS requests to REST API should return Allow header.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/36829">36829</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/36829","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>joehoyle</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-03-03 09:54:32 +0000 (Thu, 03 Mar 2016)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>OPTIONS requests to REST API should return Allow header.
An OPTIONS request was incorrectly returning an "Accept" header which
was a typo of "Allow". This meant Accept was showing "GET, POST" for example,
however it was also not running the permission checks on the endpoints.
Instead, the correct route needs to be set on the request object, which means
the normal handling for the Allow header will kick in. This technically
breaks backwards compatibility, however given the value of Accept was also wrong
then this should not be an issue.
Fixes <a href="https://core.trac.wordpress.org/ticket/35975">#35975</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesrestapiphp">trunk/src/wp-includes/rest-api.php</a></li>
<li><a href="#trunktestsphpunittestsrestapirestserverphp">trunk/tests/phpunit/tests/rest-api/rest-server.php</a></li>
</ul>
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<h3>Diff</h3>
<a id="trunksrcwpincludesrestapiphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/rest-api.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/rest-api.php 2016-03-03 09:50:57 UTC (rev 36828)
+++ trunk/src/wp-includes/rest-api.php 2016-03-03 09:54:32 UTC (rev 36829)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -431,10 +431,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $data = $handler->get_data_for_route( $route, $endpoints, 'help' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $accept = array_merge( $accept, $data['methods'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $response->set_matched_route( $route );
</ins><span class="cx" style="display: block; padding: 0 10px"> break;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $response->header( 'Accept', implode( ', ', $accept ) );
</del><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $response->set_data( $data );
</span><span class="cx" style="display: block; padding: 0 10px"> return $response;
</span></span></pre></div>
<a id="trunktestsphpunittestsrestapirestserverphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/rest-api/rest-server.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/rest-api/rest-server.php 2016-03-03 09:50:57 UTC (rev 36828)
+++ trunk/tests/phpunit/tests/rest-api/rest-server.php 2016-03-03 09:54:32 UTC (rev 36829)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -285,6 +285,29 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $this->assertEquals( $sent_headers['Allow'], 'POST' );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ public function test_allow_header_sent_on_options_request() {
+ register_rest_route( 'test-ns', '/test', array(
+ array(
+ 'methods' => array( 'GET' ),
+ 'callback' => '__return_null',
+ ),
+ array(
+ 'methods' => array( 'POST' ),
+ 'callback' => '__return_null',
+ 'permission_callback' => '__return_null',
+ ),
+ ) );
+
+ $request = new WP_REST_Request( 'OPTIONS', '/test-ns/test' );
+ $response = $this->server->dispatch( $request );
+
+ $result = apply_filters( 'rest_post_dispatch', rest_ensure_response( $response ), $this->server, $request );
+
+ $headers = $result->get_headers();
+
+ $this->assertEquals( 'GET', $headers['Allow'] );
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> public function permission_denied() {
</span><span class="cx" style="display: block; padding: 0 10px"> return new WP_Error( 'forbidden', 'You are not allowed to do this', array( 'status' => 403 ) );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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