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<title>[39038] trunk: Customize: Prevent auto-draft post/page stubs from being saved with empty slugs or published with non-unique slugs.</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/39038">39038</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/39038","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>westonruter</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-10-30 20:20:54 +0000 (Sun, 30 Oct 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'>Customize: Prevent auto-draft post/page stubs from being saved with empty slugs or published with non-unique slugs.

* Allow `WP_Customize_Nav_Menus::insert_auto_draft_post()` to take full post array to pass to `wp_insert_post()`, except for `post_status`. Require `post_title`. 
* Ensure empty `post_name` gets explicitly set to slugified `post_title`.
* Explicitly allow only `post_type` and `post_title` params in `WP_Customize_Nav_Menus::ajax_insert_auto_draft_post()`.
* Use `wp_update_post()` instead of `wp_publish_post()` to ensure unique slugs are assigned to published auto-draft posts.
* Re-use `WP_Customize_Nav_Menus::insert_auto_draft_post()` when inserting stubs from starter content.
 
See <a href="https://core.trac.wordpress.org/ticket/38114">#38114</a>, <a href="https://core.trac.wordpress.org/ticket/38013">#38013</a>, <a href="https://core.trac.wordpress.org/ticket/34923">#34923</a>.
Fixes <a href="https://core.trac.wordpress.org/ticket/38539">#38539</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesclasswpcustomizemanagerphp">trunk/src/wp-includes/class-wp-customize-manager.php</a></li>
<li><a href="#trunksrcwpincludesclasswpcustomizenavmenusphp">trunk/src/wp-includes/class-wp-customize-nav-menus.php</a></li>
<li><a href="#trunktestsphpunittestsajaxCustomizeMenusphp">trunk/tests/phpunit/tests/ajax/CustomizeMenus.php</a></li>
<li><a href="#trunktestsphpunittestscustomizenavmenusphp">trunk/tests/phpunit/tests/customize/nav-menus.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesclasswpcustomizemanagerphp"></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/class-wp-customize-manager.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-customize-manager.php      2016-10-30 18:52:58 UTC (rev 39037)
+++ trunk/src/wp-includes/class-wp-customize-manager.php        2016-10-30 20:20:54 UTC (rev 39038)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -959,10 +959,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">                // Posts & pages.
</span><span class="cx" style="display: block; padding: 0 10px">                if ( ! empty( $posts ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        foreach ( array_keys( $posts ) as $post_symbol ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $posts[ $post_symbol ]['ID'] = wp_insert_post( wp_slash( array_merge(
-                                       $posts[ $post_symbol ],
-                                       array( 'post_status' => 'auto-draft' )
-                               ) ) );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         $r = $this->nav_menus->insert_auto_draft_post( $posts[ $post_symbol ] );
+                               if ( $r instanceof WP_Post ) {
+                                       $posts[ $post_symbol ]['ID'] = $r->ID;
+                               }
</ins><span class="cx" style="display: block; padding: 0 10px">                         }
</span><span class="cx" style="display: block; padding: 0 10px">                        $this->set_post_value( 'nav_menus_created_posts', wp_list_pluck( $posts, 'ID' ) ); // This is why nav_menus component is dependency for adding posts.
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span></span></pre></div>
<a id="trunksrcwpincludesclasswpcustomizenavmenusphp"></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/class-wp-customize-nav-menus.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-customize-nav-menus.php    2016-10-30 18:52:58 UTC (rev 39037)
+++ trunk/src/wp-includes/class-wp-customize-nav-menus.php      2016-10-30 20:20:54 UTC (rev 39038)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -734,10 +734,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 4.7.0
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @param array $postarr {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-         *     Abbreviated post array.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+  *     Post array. Note that post_status is overridden to be `auto-draft`.
</ins><span class="cx" style="display: block; padding: 0 10px">          *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-         *     @var string $post_title Post title.
-        *     @var string $post_type  Post type.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+  *     @var string $post_title   Post title. Required.
+        *     @var string $post_type    Post type. Required.
+        *     @var string $post_name    Post name.
+        *     @var string $post_content Post content.
</ins><span class="cx" style="display: block; padding: 0 10px">          * }
</span><span class="cx" style="display: block; padding: 0 10px">         * @return WP_Post|WP_Error Inserted auto-draft post object or error.
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -745,18 +747,22 @@
</span><span class="cx" style="display: block; padding: 0 10px">                if ( ! isset( $postarr['post_type'] ) || ! post_type_exists( $postarr['post_type'] )  ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        return new WP_Error( 'unknown_post_type', __( 'Unknown 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 ( ! isset( $postarr['post_title'] ) ) {
-                       $postarr['post_title'] = '';
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if ( empty( $postarr['post_title'] ) ) {
+                       return new WP_Error( 'empty_title', __( 'Empty title' ) );
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                if ( ! empty( $postarr['post_status'] ) ) {
+                       return new WP_Error( 'status_forbidden', __( 'Status is forbidden' ) );
+               }
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $postarr['post_status'] = 'auto-draft';
+
+               // Auto-drafts are allowed to have empty post_names, so it has to be explicitly set.
+               if ( empty( $postarr['post_name'] ) ) {
+                       $postarr['post_name'] = sanitize_title( $postarr['post_title'] );
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 add_filter( 'wp_insert_post_empty_content', '__return_false', 1000 );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $args = array(
-                       'post_status' => 'auto-draft',
-                       'post_type'   => $postarr['post_type'],
-                       'post_title'  => $postarr['post_title'],
-                       'post_name'   => sanitize_title( $postarr['post_title'] ), // Auto-drafts are allowed to have empty post_names, so we need to explicitly set it.
-               );
-               $r = wp_insert_post( wp_slash( $args ), true );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $r = wp_insert_post( wp_slash( $postarr ), true );
</ins><span class="cx" style="display: block; padding: 0 10px">                 remove_filter( 'wp_insert_post_empty_content', '__return_false', 1000 );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( is_wp_error( $r ) ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -785,15 +791,18 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        wp_send_json_error( 'missing_params', 400 );
</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">-                $params = wp_array_slice_assoc(
-                       array_merge(
-                               array(
-                                       'post_type' => '',
-                                       'post_title' => '',
-                               ),
-                               wp_unslash( $_POST['params'] )
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $params = wp_unslash( $_POST['params'] );
+               $illegal_params = array_diff( array_keys( $params ), array( 'post_type', 'post_title' ) );
+               if ( ! empty( $illegal_params ) ) {
+                       wp_send_json_error( 'illegal_params', 400 );
+               }
+
+               $params = array_merge(
+                       array(
+                               'post_type' => '',
+                               'post_title' => '',
</ins><span class="cx" style="display: block; padding: 0 10px">                         ),
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        array( 'post_type', 'post_title' )
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $params
</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">                if ( empty( $params['post_type'] ) || ! post_type_exists( $params['post_type'] ) ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1139,7 +1148,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $post_ids = $setting->post_value();
</span><span class="cx" style="display: block; padding: 0 10px">                if ( ! empty( $post_ids ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        foreach ( $post_ids as $post_id ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                wp_publish_post( $post_id );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         // Note that wp_publish_post() cannot be used because unique slugs need to be assigned.
+                               wp_update_post( array( 'ID' => $post_id, 'post_status' => 'publish' ) );
</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">        }
</span></span></pre></div>
<a id="trunktestsphpunittestsajaxCustomizeMenusphp"></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/ajax/CustomizeMenus.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/ajax/CustomizeMenus.php 2016-10-30 18:52:58 UTC (rev 39037)
+++ trunk/tests/phpunit/tests/ajax/CustomizeMenus.php   2016-10-30 20:20:54 UTC (rev 39038)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -547,6 +547,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertTrue( $response['success'] );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertArrayHasKey( 'post_id', $response['data'] );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertArrayHasKey( 'url', $response['data'] );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $post = get_post( $response['data']['post_id'] );
+               $this->assertEquals( 'Hello World', $post->post_title );
+               $this->assertEquals( 'post', $post->post_type );
+               $this->assertEquals( 'hello-world', $post->post_name );
</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">        /**
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -635,5 +639,21 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $response = json_decode( $this->_last_response, true );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertFalse( $response['success'] );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals( 'missing_post_title', $response['data'] );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               // illegal_params.
+               $_POST = wp_slash( array(
+                       'customize-menus-nonce' => wp_create_nonce( 'customize-menus' ),
+                       'params' => array(
+                               'post_type' => 'post',
+                               'post_title' => 'OK',
+                               'post_name' => 'bad',
+                               'post_content' => 'bad',
+                       ),
+               ) );
+               $this->_last_response = '';
+               $this->make_ajax_call( 'customize-nav-menus-insert-auto-draft' );
+               $response = json_decode( $this->_last_response, true );
+               $this->assertFalse( $response['success'] );
+               $this->assertEquals( 'illegal_params', $response['data'] );
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="trunktestsphpunittestscustomizenavmenusphp"></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/customize/nav-menus.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/customize/nav-menus.php 2016-10-30 18:52:58 UTC (rev 39037)
+++ trunk/tests/phpunit/tests/customize/nav-menus.php   2016-10-30 20:20:54 UTC (rev 39038)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -542,11 +542,22 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertInstanceOf( 'WP_Error', $r );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals( 'unknown_post_type', $r->get_error_code() );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $r = $menus->insert_auto_draft_post( array( 'post_status' => 'publish', 'post_title' => 'Bad', 'post_type' => 'post' ) );
+               $this->assertInstanceOf( 'WP_Error', $r );
+               $this->assertEquals( 'status_forbidden', $r->get_error_code() );
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 $r = $menus->insert_auto_draft_post( array( 'post_title' => 'Hello World', 'post_type' => 'post' ) );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertInstanceOf( 'WP_Post', $r );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals( 'Hello World', $r->post_title );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $this->assertEquals( 'hello-world', $r->post_name );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $this->assertEquals( 'post', $r->post_type );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $this->assertEquals( sanitize_title( $r->post_title ), $r->post_name );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               $r = $menus->insert_auto_draft_post( array( 'post_title' => 'Hello World', 'post_type' => 'post', 'post_name' => 'greetings-world', 'post_content' => 'Hi World' ) );
+               $this->assertInstanceOf( 'WP_Post', $r );
+               $this->assertEquals( 'Hello World', $r->post_title );
+               $this->assertEquals( 'post', $r->post_type );
+               $this->assertEquals( 'greetings-world', $r->post_name );
+               $this->assertEquals( 'Hi World', $r->post_content );
</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">        /**
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -731,6 +742,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $post_ids = $this->factory()->post->create_many( 3, array(
</span><span class="cx" style="display: block; padding: 0 10px">                        'post_status' => 'auto-draft',
</span><span class="cx" style="display: block; padding: 0 10px">                        'post_type' => 'post',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'post_name' => 'auto-draft',
</ins><span class="cx" style="display: block; padding: 0 10px">                 ) );
</span><span class="cx" style="display: block; padding: 0 10px">                $pre_published_post_id = $this->factory()->post->create( array( 'post_status' => 'publish' ) );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -750,6 +762,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">                foreach ( $post_ids as $post_id ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $this->assertEquals( 'publish', get_post_status( $post_id ) );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               // Ensure that unique slugs were assigned.
+               $posts = array_map( 'get_post', $post_ids );
+               $post_names = wp_list_pluck( $posts, 'post_name' );
+               $this->assertEqualSets( $post_names, array_unique( $post_names ) );
</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">        /**
</span></span></pre>
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