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<title>[43694] branches/5.0: REST API: Enable users with `read_private_posts` to query for them.</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/43694">43694</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/43694","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>danielbachhuber</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2018-10-10 20:48:21 +0000 (Wed, 10 Oct 2018)</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'>REST API: Enable users with `read_private_posts` to query for them.

An authorized request with the `read_private_posts` capability for a post type should be able to `GET /wp/v2/posts` for posts of `status=private`. This query is further sanity-checked by `WP_REST_Posts_Controller->check_read_permission()`, which is unchanged.

Props rachelbaker, soulseekah, twoelevenjay.
Fixes <a href="https://core.trac.wordpress.org/ticket/43701">#43701</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches50srcwpincludesrestapiendpointsclasswprestpostscontrollerphp">branches/5.0/src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php</a></li>
<li><a href="#branches50testsphpunittestsrestapirestpostscontrollerphp">branches/5.0/tests/phpunit/tests/rest-api/rest-posts-controller.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branches50srcwpincludesrestapiendpointsclasswprestpostscontrollerphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.0/src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php        2018-10-10 16:28:32 UTC (rev 43693)
+++ branches/5.0/src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php  2018-10-10 20:48:21 UTC (rev 43694)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2498,7 +2498,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        $post_type_obj = get_post_type_object( $this->post_type );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        if ( current_user_can( $post_type_obj->cap->edit_posts ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 if ( current_user_can( $post_type_obj->cap->edit_posts ) || 'private' === $status && current_user_can( $post_type_obj->cap->read_private_posts ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                                 $result = rest_validate_request_arg( $status, $request, $parameter );
</span><span class="cx" style="display: block; padding: 0 10px">                                if ( is_wp_error( $result ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                        return $result;
</span></span></pre></div>
<a id="branches50testsphpunittestsrestapirestpostscontrollerphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.0/tests/phpunit/tests/rest-api/rest-posts-controller.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/tests/phpunit/tests/rest-api/rest-posts-controller.php       2018-10-10 16:28:32 UTC (rev 43693)
+++ branches/5.0/tests/phpunit/tests/rest-api/rest-posts-controller.php 2018-10-10 20:48:21 UTC (rev 43694)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -16,6 +16,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $editor_id;
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $author_id;
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $contributor_id;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        protected static $private_reader_id;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $supported_formats;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -39,6 +40,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        'role' => 'contributor',
</span><span class="cx" style="display: block; padding: 0 10px">                ) );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                self::$private_reader_id = $factory->user->create(
+                       array(
+                               'role' => 'private_reader',
+                       )
+               );
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( is_multisite() ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        update_site_option( 'site_admins', array( 'superadmin' ) );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -62,11 +69,17 @@
</span><span class="cx" style="display: block; padding: 0 10px">                self::delete_user( self::$editor_id );
</span><span class="cx" style="display: block; padding: 0 10px">                self::delete_user( self::$author_id );
</span><span class="cx" style="display: block; padding: 0 10px">                self::delete_user( self::$contributor_id );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                self::delete_user( self::$private_reader_id );
</ins><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">        public function setUp() {
</span><span class="cx" style="display: block; padding: 0 10px">                parent::setUp();
</span><span class="cx" style="display: block; padding: 0 10px">                register_post_type( 'youseeme', array( 'supports' => array(), 'show_in_rest' => true ) );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               add_role( 'private_reader', 'Private Reader' );
+               $role = get_role( 'private_reader' );
+               $role->add_cap( 'read_private_posts' );
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 add_filter( 'rest_pre_dispatch', array( $this, 'wpSetUpBeforeRequest' ), 10, 3 );
</span><span class="cx" style="display: block; padding: 0 10px">                add_filter( 'posts_clauses', array( $this, 'save_posts_clauses' ), 10, 2 );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -497,6 +510,20 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertErrorResponse( 'rest_invalid_param', $response, 400 );
</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">+        /**
+        * @ticket 43701
+        */
+       public function test_get_items_multiple_statuses_custom_role_one_invalid_query() {
+               $private_post_id = $this->factory->post->create( array( 'post_status' => 'private' ) );
+
+               wp_set_current_user( self::$private_reader_id );
+               $request = new WP_REST_Request( 'GET', '/wp/v2/posts' );
+               $request->set_param( 'status', array( 'private', 'future' ) );
+
+               $response = rest_get_server()->dispatch( $request );
+               $this->assertErrorResponse( 'rest_invalid_param', $response, 400 );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         public function test_get_items_invalid_status_query() {
</span><span class="cx" style="display: block; padding: 0 10px">                wp_set_current_user( 0 );
</span><span class="cx" style="display: block; padding: 0 10px">                $request = new WP_REST_Request( 'GET', '/wp/v2/posts' );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -993,23 +1020,54 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertContains( '<' . $next_link . '>; rel="next"', $headers['Link'] );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        public function test_get_items_private_status_query_var() {
-               // Private query vars inaccessible to unauthorized users
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ public function test_get_items_status_draft_permissions() {
+               $draft_id = $this->factory->post->create( array( 'post_status' => 'draft' ) );
+
+               // Drafts status query var inaccessible to unauthorized users.
</ins><span class="cx" style="display: block; padding: 0 10px">                 wp_set_current_user( 0 );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $draft_id = $this->factory->post->create( array( 'post_status' => 'draft' ) );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $request  = new WP_REST_Request( 'GET', '/wp/v2/posts' );
+               $request->set_param( 'status', 'draft' );
+               $response = rest_get_server()->dispatch( $request );
+               $this->assertErrorResponse( 'rest_invalid_param', $response, 400 );
+
+               // Users with 'read_private_posts' cap shouldn't also be able to view drafts.
+               wp_set_current_user( self::$private_reader_id );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $request = new WP_REST_Request( 'GET', '/wp/v2/posts' );
</span><span class="cx" style="display: block; padding: 0 10px">                $request->set_param( 'status', 'draft' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $response = $this->server->dispatch( $request );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $response = rest_get_server()->dispatch( $request );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $this->assertErrorResponse( 'rest_invalid_param', $response, 400 );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // But they are accessible to authorized users
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // But drafts are accessible to authorized users.
</ins><span class="cx" style="display: block; padding: 0 10px">                 wp_set_current_user( self::$editor_id );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $response = $this->server->dispatch( $request );
-               $data = $response->get_data();
-               $this->assertCount( 1, $data );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $response = rest_get_server()->dispatch( $request );
+               $data     = $response->get_data();
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 $this->assertEquals( $draft_id, $data[0]['id'] );
</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">+        /**
+        * @ticket 43701
+        */
+       public function test_get_items_status_private_permissions() {
+               $private_post_id = $this->factory->post->create( array( 'post_status' => 'private' ) );
+
+               wp_set_current_user( 0 );
+               $request = new WP_REST_Request( 'GET', '/wp/v2/posts' );
+               $request->set_param( 'status', 'private' );
+               $response = rest_get_server()->dispatch( $request );
+               $this->assertErrorResponse( 'rest_invalid_param', $response, 400 );
+
+               wp_set_current_user( self::$private_reader_id );
+               $request = new WP_REST_Request( 'GET', '/wp/v2/posts' );
+               $request->set_param( 'status', 'private' );
+
+               $response = rest_get_server()->dispatch( $request );
+               $data     = $response->get_data();
+               $this->assertEquals( 200, $response->get_status() );
+               $this->assertCount( 1, $data );
+               $this->assertEquals( $private_post_id, $data[0]['id'] );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         public function test_get_items_invalid_per_page() {
</span><span class="cx" style="display: block; padding: 0 10px">                $request = new WP_REST_Request( 'GET', '/wp/v2/posts' );
</span><span class="cx" style="display: block; padding: 0 10px">                $request->set_query_params( array( 'per_page' => -1 ) );
</span></span></pre>
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