Ensure that private posts cannot be made sticky via Quick Edit.

DRY the logic for stickies in `wp_xmlrpc_server` by introducing `->_toggle_sticky()`.

Props wonderboymusic, obenland, chriscct7.
Fixes #20662.


git-svn-id: https://develop.svn.wordpress.org/trunk@33325 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/ajax-actions.php

@@ -1567,10 +1567,12 @@ function wp_ajax_inline_save() {
 		$data['parent_id'] = $data['post_parent'];
 
 	// Status.
-	if ( isset($data['keep_private']) && 'private' == $data['keep_private'] )
+	if ( isset( $data['keep_private'] ) && 'private' == $data['keep_private'] ) {
+		$data['visibility']  = 'private';
 		$data['post_status'] = 'private';
-	else
+	} else {
 		$data['post_status'] = $data['_status'];
+	}
 
 	if ( empty($data['comment_status']) )
 		$data['comment_status'] = 'closed';

src/wp-includes/class-wp-xmlrpc-server.php

@@ -1192,6 +1192,40 @@ class wp_xmlrpc_server extends IXR_Server {
 		return $count > 1;
 	}
 
+	/**
+	 * @since 4.3.0
+	 *
+	 * @param array $post_data
+	 * @param bool  $update
+	 * @return void|IXR_Error
+	 */
+	private function _toggle_sticky( $post_data, $update = false ) {
+		$post_type = get_post_type_object( $post_data['post_type'] );
+
+		// Private and password-protected posts cannot be stickied.
+		if ( 'private' === $post_data['post_status'] || ! empty( $post_data['post_password'] ) ) {
+			// Error if the client tried to stick the post, otherwise, silently unstick.
+			if ( ! empty( $post_data['sticky'] ) ) {
+				return new IXR_Error( 401, __( 'Sorry, you cannot stick a private post.' ) );
+			}
+
+			if ( $update ) {
+				unstick_post( $post_data['ID'] );
+			}
+		} elseif ( isset( $post_data['sticky'] ) )  {
+			if ( ! current_user_can( $post_type->cap->edit_others_posts ) ) {
+				return new IXR_Error( 401, __( 'Sorry, you are not allowed to stick this post.' ) );
+			}
+
+			$sticky = wp_validate_boolean( $post_data['sticky'] );
+			if ( $sticky ) {
+				stick_post( $post_data['ID'] );
+			} else {
+				unstick_post( $post_data['ID'] );
+			}
+		}
+	}
+
 	/**
 	 * Helper method for wp_newPost() and wp_editPost(), containing shared logic.
 	 *
@@ -1287,20 +1321,9 @@ class wp_xmlrpc_server extends IXR_Server {
 		$post_ID = $post_data['ID'];
 
 		if ( $post_data['post_type'] == 'post' ) {
-			// Private and password-protected posts cannot be stickied.
+			$error = $this->_toggle_sticky( $post_data, $update );
-			if ( $post_data['post_status'] == 'private' || ! empty( $post_data['post_password'] ) ) {
+			if ( $error ) {
-				// Error if the client tried to stick the post, otherwise, silently unstick.
+				return $error;
-				if ( ! empty( $post_data['sticky'] ) )
-					return new IXR_Error( 401, __( 'Sorry, you cannot stick a private post.' ) );
-				if ( $update )
-					unstick_post( $post_ID );
-			} elseif ( isset( $post_data['sticky'] ) )  {
-				if ( ! current_user_can( $post_type->cap->edit_others_posts ) )
-					return new IXR_Error( 401, __( 'Sorry, you are not allowed to stick this post.' ) );
-				if ( $post_data['sticky'] )
-					stick_post( $post_ID );
-				else
-					unstick_post( $post_ID );
 			}
 		}
 
@@ -4902,10 +4925,12 @@ class wp_xmlrpc_server extends IXR_Server {
 
 		// Only posts can be sticky
 		if ( $post_type == 'post' && isset( $content_struct['sticky'] ) ) {
-			if ( $content_struct['sticky'] == true )
+			$data = $postdata;
-				stick_post( $post_ID );
+			$data['sticky'] = $content_struct['sticky'];
-			elseif ( $content_struct['sticky'] == false )
+			$error = $this->_toggle_sticky( $data );
-				unstick_post( $post_ID );
+			if ( $error ) {
+				return $error;
+			}
 		}
 
 		if ( isset($content_struct['custom_fields']) )
@@ -5250,10 +5275,12 @@ class wp_xmlrpc_server extends IXR_Server {
 
 		// Only posts can be sticky
 		if ( $post_type == 'post' && isset( $content_struct['sticky'] ) ) {
-			if ( $content_struct['sticky'] == true )
+			$data = $newpost;
-				stick_post( $post_ID );
+			$data['sticky'] = $content_struct['sticky'];
-			elseif ( $content_struct['sticky'] == false )
+			$error = $this->_toggle_sticky( $data, true );
-				unstick_post( $post_ID );
+			if ( $error ) {
+				return $error;
+			}
 		}
 
 		if ( isset($content_struct['custom_fields']) )