Wordpress 3.7

[autoinstalls/wordpress.git] / wp-admin / includes / ajax-actions.php

diff --git a/wp-admin/includes/ajax-actions.php b/wp-admin/includes/ajax-actions.php
index c39effe75ef42f4fb58b0bb94f5cc00d59630be9..e6c28344b164d9ba689ff348f151ef2cd2be128f 100644 (file)
--- a/wp-admin/includes/ajax-actions.php
+++ b/wp-admin/includes/ajax-actions.php
@@ -10,19 +10,61 @@
  * No-privilege Ajax handlers.
  */
 
  * No-privilege Ajax handlers.
  */
 

-function wp_ajax_nopriv_autosave() {
-       $id = isset( $_POST['post_ID'] ) ? (int) $_POST['post_ID'] : 0;
+/**
+ * Heartbeat API (experimental)
+ *
+ * Runs when the user is not logged in.
+ */
+function wp_ajax_nopriv_heartbeat() {
+       $response = array();

 
 

-       if ( ! $id )
-               wp_die( -1 );
+       // screen_id is the same as $current_screen->id and the JS global 'pagenow'
+       if ( ! empty($_POST['screen_id']) )
+               $screen_id = sanitize_key($_POST['screen_id']);
+       else
+               $screen_id = 'front';
+
+       if ( ! empty($_POST['data']) ) {
+               $data = wp_unslash( (array) $_POST['data'] );
+
+               /**
+                * Filter Heartbeat AJAX response in no-privilege environments.
+                *
+                * @since 3.6.0
+                *
+                * @param array|object $response  The no-priv Heartbeat response object or array.
+                * @param array        $data      An array of data passed via $_POST.
+                * @param string       $screen_id The screen id.
+                */
+               $response = apply_filters( 'heartbeat_nopriv_received', $response, $data, $screen_id );
+       }

 
 

-       $message = sprintf( __('<strong>ALERT: You are logged out!</strong> Could not save draft. <a href="%s" target="_blank">Please log in again.</a>'), wp_login_url() );
-       $x = new WP_Ajax_Response( array(
-               'what' => 'autosave',
-               'id' => $id,
-               'data' => $message
-       ) );
-       $x->send();
+       /**
+        * Filter Heartbeat AJAX response when no data is passed.
+        *
+        * @since 3.6.0
+        *
+        * @param array|object $response  The Heartbeat response object or array.
+        * @param string       $screen_id The screen id.
+        */
+       $response = apply_filters( 'heartbeat_nopriv_send', $response, $screen_id );
+
+       /**
+        * Fires when Heartbeat ticks in no-privilege environments.
+        *
+        * Allows the transport to be easily replaced with long-polling.
+        *
+        * @since 3.6.0
+        *
+        * @param array|object $response  The no-priv Heartbeat response.
+        * @param string       $screen_id The screen id.
+        */
+       do_action( 'heartbeat_nopriv_tick', $response, $screen_id );
+
+       // send the current time according to the server
+       $response['server_time'] = time();
+
+       wp_send_json($response);

 }
 
 /*
 }
 
 /*


@@ -59,7 +101,7 @@ function wp_ajax_ajax_tag_search() {
                wp_die( 0 );
        }
 
                wp_die( 0 );
        }
 

-       $s = stripslashes( $_GET['q'] );
+       $s = wp_unslash( $_GET['q'] );

 
        $comma = _x( ',', 'tag delimiter' );
        if ( ',' !== $comma )
 
        $comma = _x( ',', 'tag delimiter' );
        if ( ',' !== $comma )


@@ -72,7 +114,7 @@ function wp_ajax_ajax_tag_search() {
        if ( strlen( $s ) < 2 )
                wp_die(); // require 2 chars for matching
 
        if ( strlen( $s ) < 2 )
                wp_die(); // require 2 chars for matching
 

-       $results = $wpdb->get_col( $wpdb->prepare( "SELECT t.name FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.name LIKE (%s)", $taxonomy, '%' . like_escape( $s ) . '%' ) );
+       $results = get_terms( $taxonomy, array( 'name__like' => $s, 'fields' => 'names', 'hide_empty' => false ) );

 
        echo join( $results, "\n" );
        wp_die();
 
        echo join( $results, "\n" );
        wp_die();


@@ -148,6 +190,7 @@ function wp_ajax_autocomplete_user() {
        if ( ! is_multisite() || ! current_user_can( 'promote_users' ) || wp_is_large_network( 'users' ) )
                wp_die( -1 );
 
        if ( ! is_multisite() || ! current_user_can( 'promote_users' ) || wp_is_large_network( 'users' ) )
                wp_die( -1 );
 

+       /** This filter is documented in wp-admin/user-new.php */

        if ( ! is_super_admin() && ! apply_filters( 'autocomplete_users_for_site_admins', false ) )
                wp_die( -1 );
 
        if ( ! is_super_admin() && ! apply_filters( 'autocomplete_users_for_site_admins', false ) )
                wp_die( -1 );
 


@@ -226,10 +269,11 @@ function wp_ajax_logged_in() {
  * @return die
  */
 function _wp_ajax_delete_comment_response( $comment_id, $delta = -1 ) {
  * @return die
  */
 function _wp_ajax_delete_comment_response( $comment_id, $delta = -1 ) {

-       $total = (int) @$_POST['_total'];
-       $per_page = (int) @$_POST['_per_page'];
-       $page = (int) @$_POST['_page'];
-       $url = esc_url_raw( @$_POST['_url'] );
+       $total    = isset( $_POST['_total'] )    ? (int) $_POST['_total']    : 0;
+       $per_page = isset( $_POST['_per_page'] ) ? (int) $_POST['_per_page'] : 0;
+       $page     = isset( $_POST['_page'] )     ? (int) $_POST['_page']     : 0;
+       $url      = isset( $_POST['_url'] )      ? esc_url_raw( $_POST['_url'] ) : '';
+

        // JS didn't send us everything we need to know. Just die with success message
        if ( !$total || !$per_page || !$page || !$url )
                wp_die( time() );
        // JS didn't send us everything we need to know. Just die with success message
        if ( !$total || !$per_page || !$page || !$url )
                wp_die( time() );


@@ -531,7 +575,7 @@ function wp_ajax_dim_comment() {
                wp_die( -1 );
 
        $current = wp_get_comment_status( $comment->comment_ID );
                wp_die( -1 );
 
        $current = wp_get_comment_status( $comment->comment_ID );

-       if ( $_POST['new'] == $current )
+       if ( isset( $_POST['new'] ) && $_POST['new'] == $current )

                wp_die( time() );
 
        check_ajax_referer( "approve-comment_$id" );
                wp_die( time() );
 
        check_ajax_referer( "approve-comment_$id" );


@@ -559,7 +603,7 @@ function wp_ajax_add_link_category( $action ) {
        check_ajax_referer( $action );
        if ( !current_user_can( 'manage_categories' ) )
                wp_die( -1 );
        check_ajax_referer( $action );
        if ( !current_user_can( 'manage_categories' ) )
                wp_die( -1 );

-       $names = explode(',', $_POST['newcat']);
+       $names = explode(',', wp_unslash( $_POST['newcat'] ) );

        $x = new WP_Ajax_Response();
        foreach ( $names as $cat_name ) {
                $cat_name = trim($cat_name);
        $x = new WP_Ajax_Response();
        foreach ( $names as $cat_name ) {
                $cat_name = trim($cat_name);


@@ -572,7 +616,7 @@ function wp_ajax_add_link_category( $action ) {
                        continue;
                else if ( is_array( $cat_id ) )
                        $cat_id = $cat_id['term_id'];
                        continue;
                else if ( is_array( $cat_id ) )
                        $cat_id = $cat_id['term_id'];

-               $cat_name = esc_html(stripslashes($cat_name));
+               $cat_name = esc_html( $cat_name );

                $x->add( array(
                        'what' => 'link-category',
                        'id' => $cat_id,
                $x->add( array(
                        'what' => 'link-category',
                        'id' => $cat_id,


@@ -651,7 +695,7 @@ function wp_ajax_get_tagcloud() {
        $tags = get_terms( $taxonomy, array( 'number' => 45, 'orderby' => 'count', 'order' => 'DESC' ) );
 
        if ( empty( $tags ) )
        $tags = get_terms( $taxonomy, array( 'number' => 45, 'orderby' => 'count', 'order' => 'DESC' ) );
 
        if ( empty( $tags ) )

-               wp_die( isset( $tax->no_tagcloud ) ? $tax->no_tagcloud : __('No tags found!') );
+               wp_die( $tax->labels->not_found );

 
        if ( is_wp_error( $tags ) )
                wp_die( $tags->get_error_message() );
 
        if ( is_wp_error( $tags ) )
                wp_die( $tags->get_error_message() );


@@ -679,9 +723,18 @@ function wp_ajax_get_comments( $action ) {
 
        check_ajax_referer( $action );
 
 
        check_ajax_referer( $action );
 

+       if ( empty( $post_id ) && ! empty( $_REQUEST['p'] ) ) {
+               $id = absint( $_REQUEST['p'] );
+               if ( ! empty( $id ) )
+                       $post_id = $id;
+       }
+
+       if ( empty( $post_id ) )
+               wp_die( -1 );
+

        $wp_list_table = _get_list_table( 'WP_Post_Comments_List_Table', array( 'screen' => 'edit-comments' ) );
 
        $wp_list_table = _get_list_table( 'WP_Post_Comments_List_Table', array( 'screen' => 'edit-comments' ) );
 

-       if ( !current_user_can( 'edit_post', $post_id ) )
+       if ( ! current_user_can( 'edit_post', $post_id ) )

                wp_die( -1 );
 
        $wp_list_table->prepare_items();
                wp_die( -1 );
 
        $wp_list_table->prepare_items();


@@ -715,24 +768,29 @@ function wp_ajax_replyto_comment( $action ) {
        check_ajax_referer( $action, '_ajax_nonce-replyto-comment' );
 
        $comment_post_ID = (int) $_POST['comment_post_ID'];
        check_ajax_referer( $action, '_ajax_nonce-replyto-comment' );
 
        $comment_post_ID = (int) $_POST['comment_post_ID'];

-       if ( !current_user_can( 'edit_post', $comment_post_ID ) )
+       $post = get_post( $comment_post_ID );
+       if ( ! $post )

                wp_die( -1 );
 
                wp_die( -1 );
 

-       $status = $wpdb->get_var( $wpdb->prepare("SELECT post_status FROM $wpdb->posts WHERE ID = %d", $comment_post_ID) );
+       if ( !current_user_can( 'edit_post', $comment_post_ID ) )
+               wp_die( -1 );

 
 

-       if ( empty($status) )
+       if ( empty( $post->post_status ) )

                wp_die( 1 );
                wp_die( 1 );

-       elseif ( in_array($status, array('draft', 'pending', 'trash') ) )
+       elseif ( in_array($post->post_status, array('draft', 'pending', 'trash') ) )

                wp_die( __('ERROR: you are replying to a comment on a draft post.') );
 
        $user = wp_get_current_user();
        if ( $user->exists() ) {
                $user_ID = $user->ID;
                wp_die( __('ERROR: you are replying to a comment on a draft post.') );
 
        $user = wp_get_current_user();
        if ( $user->exists() ) {
                $user_ID = $user->ID;

-               $comment_author       = $wpdb->escape($user->display_name);
-               $comment_author_email = $wpdb->escape($user->user_email);
-               $comment_author_url   = $wpdb->escape($user->user_url);
+               $comment_author       = wp_slash( $user->display_name );
+               $comment_author_email = wp_slash( $user->user_email );
+               $comment_author_url   = wp_slash( $user->user_url );

                $comment_content      = trim($_POST['content']);
                if ( current_user_can( 'unfiltered_html' ) ) {
                $comment_content      = trim($_POST['content']);
                if ( current_user_can( 'unfiltered_html' ) ) {

+                       if ( ! isset( $_POST['_wp_unfiltered_html_comment'] ) )
+                               $_POST['_wp_unfiltered_html_comment'] = '';
+

                        if ( wp_create_nonce( 'unfiltered-html-comment' ) != $_POST['_wp_unfiltered_html_comment'] ) {
                                kses_remove_filters(); // start with a clean slate
                                kses_init_filters(); // set up the filters
                        if ( wp_create_nonce( 'unfiltered-html-comment' ) != $_POST['_wp_unfiltered_html_comment'] ) {
                                kses_remove_filters(); // start with a clean slate
                                kses_init_filters(); // set up the filters


@@ -745,7 +803,9 @@ function wp_ajax_replyto_comment( $action ) {
        if ( '' == $comment_content )
                wp_die( __( 'ERROR: please type a comment.' ) );
 
        if ( '' == $comment_content )
                wp_die( __( 'ERROR: please type a comment.' ) );
 

-       $comment_parent = absint($_POST['comment_ID']);
+       $comment_parent = 0;
+       if ( isset( $_POST['comment_ID'] ) )
+               $comment_parent = absint( $_POST['comment_ID'] );

        $comment_auto_approved = false;
        $commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type', 'comment_parent', 'user_ID');
 
        $comment_auto_approved = false;
        $commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type', 'comment_parent', 'user_ID');
 


@@ -766,19 +826,18 @@ function wp_ajax_replyto_comment( $action ) {
        $position = ( isset($_POST['position']) && (int) $_POST['position'] ) ? (int) $_POST['position'] : '-1';
 
        ob_start();
        $position = ( isset($_POST['position']) && (int) $_POST['position'] ) ? (int) $_POST['position'] : '-1';
 
        ob_start();

-               if ( 'dashboard' == $_REQUEST['mode'] ) {
-                       require_once( ABSPATH . 'wp-admin/includes/dashboard.php' );
-                       _wp_dashboard_recent_comments_row( $comment );
+       if ( isset( $_REQUEST['mode'] ) && 'dashboard' == $_REQUEST['mode'] ) {
+               require_once( ABSPATH . 'wp-admin/includes/dashboard.php' );
+               _wp_dashboard_recent_comments_row( $comment );
+       } else {
+               if ( isset( $_REQUEST['mode'] ) && 'single' == $_REQUEST['mode'] ) {
+                       $wp_list_table = _get_list_table('WP_Post_Comments_List_Table', array( 'screen' => 'edit-comments' ) );

                } else {
                } else {

-                       if ( 'single' == $_REQUEST['mode'] ) {
-                               $wp_list_table = _get_list_table('WP_Post_Comments_List_Table', array( 'screen' => 'edit-comments' ) );
-                       } else {
-                               $wp_list_table = _get_list_table('WP_Comments_List_Table', array( 'screen' => 'edit-comments' ) );
-                       }
-                       $wp_list_table->single_row( $comment );
+                       $wp_list_table = _get_list_table('WP_Comments_List_Table', array( 'screen' => 'edit-comments' ) );

                }
                }

-               $comment_list_item = ob_get_contents();
-       ob_end_clean();
+               $wp_list_table->single_row( $comment );
+       }
+       $comment_list_item = ob_get_clean();

 
        $response =  array(
                'what' => 'comment',
 
        $response =  array(
                'what' => 'comment',


@@ -807,7 +866,8 @@ function wp_ajax_edit_comment() {
        if ( '' == $_POST['content'] )
                wp_die( __( 'ERROR: please type a comment.' ) );
 
        if ( '' == $_POST['content'] )
                wp_die( __( 'ERROR: please type a comment.' ) );
 

-       $_POST['comment_status'] = $_POST['status'];
+       if ( isset( $_POST['status'] ) )
+               $_POST['comment_status'] = $_POST['status'];

        edit_comment();
 
        $position = ( isset($_POST['position']) && (int) $_POST['position']) ? (int) $_POST['position'] : '-1';
        edit_comment();
 
        $position = ( isset($_POST['position']) && (int) $_POST['position']) ? (int) $_POST['position'] : '-1';


@@ -817,11 +877,12 @@ function wp_ajax_edit_comment() {
        $wp_list_table = _get_list_table( $checkbox ? 'WP_Comments_List_Table' : 'WP_Post_Comments_List_Table', array( 'screen' => 'edit-comments' ) );
 
        $comment = get_comment( $comment_id );
        $wp_list_table = _get_list_table( $checkbox ? 'WP_Comments_List_Table' : 'WP_Post_Comments_List_Table', array( 'screen' => 'edit-comments' ) );
 
        $comment = get_comment( $comment_id );

+       if ( empty( $comment->comment_ID ) )
+               wp_die( -1 );

 
        ob_start();
 
        ob_start();

-               $wp_list_table->single_row( $comment );
-               $comment_list_item = ob_get_contents();
-       ob_end_clean();
+       $wp_list_table->single_row( $comment );
+       $comment_list_item = ob_get_clean();

 
        $x = new WP_Ajax_Response();
 
 
        $x = new WP_Ajax_Response();
 


@@ -888,6 +949,14 @@ function wp_ajax_add_menu_item() {
                }
        }
 
                }
        }
 

+       /**
+        * Filter the Walker class used when adding nav menu items.
+        *
+        * @since 3.4.0
+        *
+        * @param string $class   The walker class to use. Default 'Walker_Nav_Menu_Edit'.
+        * @param int    $menu_id The menu id, derived from $_POST['menu'].
+        */

        $walker_class_name = apply_filters( 'wp_edit_nav_menu_walker', 'Walker_Nav_Menu_Edit', $_POST['menu'] );
 
        if ( ! class_exists( $walker_class_name ) )
        $walker_class_name = apply_filters( 'wp_edit_nav_menu_walker', 'Walker_Nav_Menu_Edit', $_POST['menu'] );
 
        if ( ! class_exists( $walker_class_name ) )


@@ -903,6 +972,7 @@ function wp_ajax_add_menu_item() {
                );
                echo walk_nav_menu_tree( $menu_items, 0, (object) $args );
        }
                );
                echo walk_nav_menu_tree( $menu_items, 0, (object) $args );
        }

+       wp_die();

 }
 
 function wp_ajax_add_meta() {
 }
 
 function wp_ajax_add_meta() {


@@ -924,7 +994,7 @@ function wp_ajax_add_meta() {
                        $_POST['post_type'] = $post->post_type;
                        $_POST['post_status'] = 'draft';
                        $now = current_time('timestamp', 1);
                        $_POST['post_type'] = $post->post_type;
                        $_POST['post_status'] = 'draft';
                        $now = current_time('timestamp', 1);

-                       $_POST['post_title'] = sprintf('Draft created on %s at %s', date(get_option('date_format'), $now), date(get_option('time_format'), $now));
+                       $_POST['post_title'] = sprintf( __( 'Draft created on %1$s at %2$s' ), date( get_option( 'date_format' ), $now ), date( get_option( 'time_format' ), $now ) );

 
                        if ( $pid = edit_post() ) {
                                if ( is_wp_error( $pid ) ) {
 
                        if ( $pid = edit_post() ) {
                                if ( is_wp_error( $pid ) ) {


@@ -956,8 +1026,8 @@ function wp_ajax_add_meta() {
                ) );
        } else { // Update?
                $mid = (int) key( $_POST['meta'] );
                ) );
        } else { // Update?
                $mid = (int) key( $_POST['meta'] );

-               $key = stripslashes( $_POST['meta'][$mid]['key'] );
-               $value = stripslashes( $_POST['meta'][$mid]['value'] );
+               $key = wp_unslash( $_POST['meta'][$mid]['key'] );
+               $value = wp_unslash( $_POST['meta'][$mid]['value'] );

                if ( '' == trim($key) )
                        wp_die( __( 'Please provide a custom field name.' ) );
                if ( '' == trim($value) )
                if ( '' == trim($key) )
                        wp_die( __( 'Please provide a custom field name.' ) );
                if ( '' == trim($value) )


@@ -1024,68 +1094,50 @@ function wp_ajax_add_user( $action ) {
 }
 
 function wp_ajax_autosave() {
 }
 
 function wp_ajax_autosave() {

-       global $login_grace_period;
-

        define( 'DOING_AUTOSAVE', true );
 
        define( 'DOING_AUTOSAVE', true );
 

-       $nonce_age = check_ajax_referer( 'autosave', 'autosavenonce' );
-
-       $_POST['post_category'] = explode(",", $_POST['catslist']);
-       if ( $_POST['post_type'] == 'page' || empty($_POST['post_category']) )
-               unset($_POST['post_category']);
+       check_ajax_referer( 'autosave', 'autosavenonce' );

 
 

-       $do_autosave = (bool) $_POST['autosave'];
-       $do_lock = true;
-
-       $data = $alert = '';
-       /* translators: draft saved date format, see http://php.net/date */
-       $draft_saved_date_format = __('g:i:s a');
-       /* translators: %s: date and time */
-       $message = sprintf( __('Draft saved at %s.'), date_i18n( $draft_saved_date_format ) );
+       if ( ! empty( $_POST['catslist'] ) )
+               $_POST['post_category'] = explode( ',', $_POST['catslist'] );
+       if ( $_POST['post_type'] == 'page' || empty( $_POST['post_category'] ) )
+               unset( $_POST['post_category'] );

 
 

+       $data = '';

        $supplemental = array();
        $supplemental = array();

-       if ( isset($login_grace_period) )
-               $alert .= sprintf( __('Your login has expired. Please open a new browser window and <a href="%s" target="_blank">log in again</a>. '), add_query_arg( 'interim-login', 1, wp_login_url() ) );
-

        $id = $revision_id = 0;
 
        $id = $revision_id = 0;
 

-       $post_ID = (int) $_POST['post_ID'];
-       $_POST['ID'] = $post_ID;
-       $post = get_post($post_ID);
-       if ( 'auto-draft' == $post->post_status )
-               $_POST['post_status'] = 'draft';
+       $post_id = (int) $_POST['post_id'];
+       $_POST['ID'] = $_POST['post_ID'] = $post_id;
+       $post = get_post( $post_id );
+       if ( empty( $post->ID ) || ! current_user_can( 'edit_post', $post->ID ) )
+               wp_die( __( 'You are not allowed to edit this post.' ) );

 
 

-       if ( $last = wp_check_post_lock( $post->ID ) ) {
-               $do_autosave = $do_lock = false;
+       if ( 'page' == $post->post_type && ! current_user_can( 'edit_page', $post->ID ) )
+               wp_die( __( 'You are not allowed to edit this page.' ) );

 
 

-               $last_user = get_userdata( $last );
-               $last_user_name = $last_user ? $last_user->display_name : __( 'Someone' );
-               $data = __( 'Autosave disabled.' );
-
-               $supplemental['disable_autosave'] = 'disable';
-               $alert .= sprintf( __( '%s is currently editing this article. If you update it, you will overwrite the changes.' ), esc_html( $last_user_name ) );
-       }
-
-       if ( 'page' == $post->post_type ) {
-               if ( !current_user_can('edit_page', $post_ID) )
-                       wp_die( __( 'You are not allowed to edit this page.' ) );
-       } else {
-               if ( !current_user_can('edit_post', $post_ID) )
-                       wp_die( __( 'You are not allowed to edit this post.' ) );
-       }
+       if ( 'auto-draft' == $post->post_status )
+               $_POST['post_status'] = 'draft';

 
 

-       if ( $do_autosave ) {
-               // Drafts and auto-drafts are just overwritten by autosave
-               if ( 'auto-draft' == $post->post_status || 'draft' == $post->post_status ) {
+       if ( ! empty( $_POST['autosave'] ) ) {
+               if ( ! wp_check_post_lock( $post->ID ) && get_current_user_id() == $post->post_author && ( 'auto-draft' == $post->post_status || 'draft' == $post->post_status ) ) {
+                       // Drafts and auto-drafts are just overwritten by autosave for the same user if the post is not locked

                        $id = edit_post();
                        $id = edit_post();

-               } else { // Non drafts are not overwritten. The autosave is stored in a special post revision.
+               } else {
+                       // Non drafts or other users drafts are not overwritten. The autosave is stored in a special post revision for each user.

                        $revision_id = wp_create_post_autosave( $post->ID );
                        if ( is_wp_error($revision_id) )
                                $id = $revision_id;
                        else
                                $id = $post->ID;
                }
                        $revision_id = wp_create_post_autosave( $post->ID );
                        if ( is_wp_error($revision_id) )
                                $id = $revision_id;
                        else
                                $id = $post->ID;
                }

-               $data = $message;
+
+               if ( ! is_wp_error($id) ) {
+                       /* translators: draft saved date format, see http://php.net/date */
+                       $draft_saved_date_format = __('g:i:s a');
+                       /* translators: %s: date and time */
+                       $data = sprintf( __('Draft saved at %s.'), date_i18n( $draft_saved_date_format ) );
+               }

        } else {
                if ( ! empty( $_POST['auto_draft'] ) )
                        $id = 0; // This tells us it didn't actually save
        } else {
                if ( ! empty( $_POST['auto_draft'] ) )
                        $id = 0; // This tells us it didn't actually save


@@ -1093,32 +1145,11 @@ function wp_ajax_autosave() {
                        $id = $post->ID;
        }
 
                        $id = $post->ID;
        }
 

-       if ( $do_lock && empty( $_POST['auto_draft'] ) && $id && is_numeric( $id ) ) {
-               $lock_result = wp_set_post_lock( $id );
-               $supplemental['active-post-lock'] = implode( ':', $lock_result );
-       }
-
-       if ( $nonce_age == 2 ) {
-               $supplemental['replace-autosavenonce'] = wp_create_nonce('autosave');
-               $supplemental['replace-getpermalinknonce'] = wp_create_nonce('getpermalink');
-               $supplemental['replace-samplepermalinknonce'] = wp_create_nonce('samplepermalink');
-               $supplemental['replace-closedpostboxesnonce'] = wp_create_nonce('closedpostboxes');
-               $supplemental['replace-_ajax_linking_nonce'] = wp_create_nonce( 'internal-linking' );
-               if ( $id ) {
-                       if ( $_POST['post_type'] == 'post' )
-                               $supplemental['replace-_wpnonce'] = wp_create_nonce('update-post_' . $id);
-                       elseif ( $_POST['post_type'] == 'page' )
-                               $supplemental['replace-_wpnonce'] = wp_create_nonce('update-page_' . $id);
-               }
-       }
-
-       if ( ! empty($alert) )
-               $supplemental['alert'] = $alert;
-
+       // @todo Consider exposing any errors, rather than having 'Saving draft...'

        $x = new WP_Ajax_Response( array(
                'what' => 'autosave',
                'id' => $id,
        $x = new WP_Ajax_Response( array(
                'what' => 'autosave',
                'id' => $id,

-               'data' => $id ? $data : '',
+               'data' => $data,

                'supplemental' => $supplemental
        ) );
        $x->send();
                'supplemental' => $supplemental
        ) );
        $x->send();


@@ -1197,7 +1228,15 @@ function wp_ajax_menu_get_metabox() {
        }
 
        if ( ! empty( $_POST['item-object'] ) && isset( $items[$_POST['item-object']] ) ) {
        }
 
        if ( ! empty( $_POST['item-object'] ) && isset( $items[$_POST['item-object']] ) ) {

-               $item = apply_filters( 'nav_menu_meta_box_object', $items[ $_POST['item-object'] ] );
+               $menus_meta_box_object = $items[ $_POST['item-object'] ];
+               /**
+                * Filter a nav menu meta box object.
+                *
+                * @since 3.0.0
+                *
+                * @param object $menus_meta_box_object A nav menu meta box object, such as Page, Post, Category, Tag, etc.
+                */
+               $item = apply_filters( 'nav_menu_meta_box_object', $menus_meta_box_object );

                ob_start();
                call_user_func_array($callback, array(
                        null,
                ob_start();
                call_user_func_array($callback, array(
                        null,


@@ -1226,7 +1265,7 @@ function wp_ajax_wp_link_ajax() {
        $args = array();
 
        if ( isset( $_POST['search'] ) )
        $args = array();
 
        if ( isset( $_POST['search'] ) )

-               $args['s'] = stripslashes( $_POST['search'] );
+               $args['s'] = wp_unslash( $_POST['search'] );

        $args['pagenum'] = ! empty( $_POST['page'] ) ? absint( $_POST['page'] ) : 1;
 
        require(ABSPATH . WPINC . '/class-wp-editor.php');
        $args['pagenum'] = ! empty( $_POST['page'] ) ? absint( $_POST['page'] ) : 1;
 
        require(ABSPATH . WPINC . '/class-wp-editor.php');


@@ -1327,13 +1366,13 @@ function wp_ajax_inline_save() {
        $data = &$_POST;
 
        $post = get_post( $post_ID, ARRAY_A );
        $data = &$_POST;
 
        $post = get_post( $post_ID, ARRAY_A );

-       $post = add_magic_quotes($post); //since it is from db
+       $post = wp_slash($post); //since it is from db

 
        $data['content'] = $post['post_content'];
        $data['excerpt'] = $post['post_excerpt'];
 
        // rename
 
        $data['content'] = $post['post_content'];
        $data['excerpt'] = $post['post_excerpt'];
 
        // rename

-       $data['user_ID'] = $GLOBALS['user_ID'];
+       $data['user_ID'] = get_current_user_id();

 
        if ( isset($data['post_parent']) )
                $data['parent_id'] = $data['post_parent'];
 
        if ( isset($data['post_parent']) )
                $data['parent_id'] = $data['post_parent'];


@@ -1349,6 +1388,12 @@ function wp_ajax_inline_save() {
        if ( empty($data['ping_status']) )
                $data['ping_status'] = 'closed';
 
        if ( empty($data['ping_status']) )
                $data['ping_status'] = 'closed';
 

+       // Hack: wp_unique_post_slug() doesn't work for drafts, so we will fake that our post is published.
+       if ( ! empty( $data['post_name'] ) && in_array( $post['post_status'], array( 'draft', 'pending' ) ) ) {
+               $post['post_status'] = 'publish';
+               $data['post_name'] = wp_unique_post_slug( $data['post_name'], $post['ID'], $post['post_status'], $post['post_type'], $post['post_parent'] );
+       }
+

        // update the post
        edit_post();
 
        // update the post
        edit_post();
 


@@ -1412,7 +1457,7 @@ function wp_ajax_inline_save_tax() {
                $parent = $parent_tag->parent;
                $level++;
        }
                $parent = $parent_tag->parent;
                $level++;
        }

-       echo $wp_list_table->single_row( $tag, $level );
+       $wp_list_table->single_row( $tag, $level );

        wp_die();
 }
 
        wp_die();
 }
 


@@ -1424,7 +1469,7 @@ function wp_ajax_find_posts() {
        $post_types = get_post_types( array( 'public' => true ), 'objects' );
        unset( $post_types['attachment'] );
 
        $post_types = get_post_types( array( 'public' => true ), 'objects' );
        unset( $post_types['attachment'] );
 

-       $s = stripslashes( $_POST['ps'] );
+       $s = wp_unslash( $_POST['ps'] );

        $searchand = $search = '';
        $args = array(
                'post_type' => array_keys( $post_types ),
        $searchand = $search = '';
        $args = array(
                'post_type' => array_keys( $post_types ),


@@ -1520,9 +1565,26 @@ function wp_ajax_save_widget() {
 
        unset( $_POST['savewidgets'], $_POST['action'] );
 
 
        unset( $_POST['savewidgets'], $_POST['action'] );
 

-       do_action('load-widgets.php');
-       do_action('widgets.php');
-       do_action('sidebar_admin_setup');
+       /**
+        * Fires early when editing the widgets displayed in sidebars.
+        *
+        * @since 2.8.0
+        */
+       do_action( 'load-widgets.php' );
+
+       /**
+        * Fires early when editing the widgets displayed in sidebars.
+        *
+        * @since 2.8.0
+        */
+       do_action( 'widgets.php' );
+
+       /**
+        * Fires early when editing the widgets displayed in sidebars.
+        *
+        * @since 2.2.0
+        */
+       do_action( 'sidebar_admin_setup' );

 
        $id_base = $_POST['id_base'];
        $widget_id = $_POST['widget-id'];
 
        $id_base = $_POST['id_base'];
        $widget_id = $_POST['widget-id'];


@@ -1776,7 +1838,14 @@ function wp_ajax_wp_remove_post_lock() {
        if ( $active_lock[1] != get_current_user_id() )
                wp_die( 0 );
 
        if ( $active_lock[1] != get_current_user_id() )
                wp_die( 0 );
 

-       $new_lock = ( time() - apply_filters( 'wp_check_post_lock_window', AUTOSAVE_INTERVAL * 2 ) + 5 ) . ':' . $active_lock[1];
+       /**
+        * Filter the post lock window duration.
+        *
+        * @since 3.3.0
+        *
+        * @param int $interval The interval in seconds the post lock duration should last, plus 5 seconds. Default 120.
+        */
+       $new_lock = ( time() - apply_filters( 'wp_check_post_lock_window', 120 ) + 5 ) . ':' . $active_lock[1];

        update_post_meta( $post_id, '_edit_lock', $new_lock, implode( ':', $active_lock ) );
        wp_die( 1 );
 }
        update_post_meta( $post_id, '_edit_lock', $new_lock, implode( ':', $active_lock ) );
        wp_die( 1 );
 }


@@ -1847,6 +1916,14 @@ function wp_ajax_query_attachments() {
        if ( current_user_can( get_post_type_object( 'attachment' )->cap->read_private_posts ) )
                $query['post_status'] .= ',private';
 
        if ( current_user_can( get_post_type_object( 'attachment' )->cap->read_private_posts ) )
                $query['post_status'] .= ',private';
 

+       /**
+        * Filter the arguments passed to WP_Query during an AJAX call for querying attachments.
+        *
+        * @since 3.7.0
+        *
+        * @param array $query An array of query variables. @see WP_Query::parse_query()
+        */
+       $query = apply_filters( 'ajax_query_attachments_args', $query );

        $query = new WP_Query( $query );
 
        $posts = array_map( 'wp_prepare_attachment_for_js', $query->posts );
        $query = new WP_Query( $query );
 
        $posts = array_map( 'wp_prepare_attachment_for_js', $query->posts );


@@ -1888,11 +1965,10 @@ function wp_ajax_save_attachment() {
                $post['post_content'] = $changes['description'];
 
        if ( isset( $changes['alt'] ) ) {
                $post['post_content'] = $changes['description'];
 
        if ( isset( $changes['alt'] ) ) {

-               $alt = get_post_meta( $id, '_wp_attachment_image_alt', true );
-               $new_alt = stripslashes( $changes['alt'] );
-               if ( $alt != $new_alt ) {
-                       $new_alt = wp_strip_all_tags( $new_alt, true );
-                       update_post_meta( $id, '_wp_attachment_image_alt', addslashes( $new_alt ) );
+               $alt = wp_unslash( $changes['alt'] );
+               if ( $alt != get_post_meta( $id, '_wp_attachment_image_alt', true ) ) {
+                       $alt = wp_strip_all_tags( $alt, true );
+                       update_post_meta( $id, '_wp_attachment_image_alt', wp_slash( $alt ) );

                }
        }
 
                }
        }
 


@@ -1926,6 +2002,7 @@ function wp_ajax_save_attachment_compat() {
        if ( 'attachment' != $post['post_type'] )
                wp_send_json_error();
 
        if ( 'attachment' != $post['post_type'] )
                wp_send_json_error();
 

+       /** This filter is documented in wp-admin/includes/media.php */

        $post = apply_filters( 'attachment_fields_to_save', $post, $attachment_data );
 
        if ( isset( $post['errors'] ) ) {
        $post = apply_filters( 'attachment_fields_to_save', $post, $attachment_data );
 
        if ( isset( $post['errors'] ) ) {


@@ -1989,7 +2066,7 @@ function wp_ajax_save_attachment_order() {
 function wp_ajax_send_attachment_to_editor() {
        check_ajax_referer( 'media-send-to-editor', 'nonce' );
 
 function wp_ajax_send_attachment_to_editor() {
        check_ajax_referer( 'media-send-to-editor', 'nonce' );
 

-       $attachment = stripslashes_deep( $_POST['attachment'] );
+       $attachment = wp_unslash( $_POST['attachment'] );

 
        $id = intval( $attachment['id'] );
 
 
        $id = intval( $attachment['id'] );
 


@@ -2015,7 +2092,7 @@ function wp_ajax_send_attachment_to_editor() {
                $html = '<a href="' . esc_url( $url ) . '"' . $rel . '>' . $html . '</a>';
        }
 
                $html = '<a href="' . esc_url( $url ) . '"' . $rel . '>' . $html . '</a>';
        }
 

-       remove_filter( 'media_send_to_editor', 'image_media_send_to_editor', 10, 3 );
+       remove_filter( 'media_send_to_editor', 'image_media_send_to_editor' );

 
        if ( 'image' === substr( $post->post_mime_type, 0, 5 ) ) {
                $align = isset( $attachment['align'] ) ? $attachment['align'] : 'none';
 
        if ( 'image' === substr( $post->post_mime_type, 0, 5 ) ) {
                $align = isset( $attachment['align'] ) ? $attachment['align'] : 'none';


@@ -2024,8 +2101,11 @@ function wp_ajax_send_attachment_to_editor() {
                $caption = isset( $attachment['post_excerpt'] ) ? $attachment['post_excerpt'] : '';
                $title = ''; // We no longer insert title tags into <img> tags, as they are redundant.
                $html = get_image_send_to_editor( $id, $caption, $title, $align, $url, (bool) $rel, $size, $alt );
                $caption = isset( $attachment['post_excerpt'] ) ? $attachment['post_excerpt'] : '';
                $title = ''; // We no longer insert title tags into <img> tags, as they are redundant.
                $html = get_image_send_to_editor( $id, $caption, $title, $align, $url, (bool) $rel, $size, $alt );

+       } elseif ( 'video' === substr( $post->post_mime_type, 0, 5 ) || 'audio' === substr( $post->post_mime_type, 0, 5 )  ) {
+               $html = stripslashes_deep( $_POST['html'] );

        }
 
        }
 

+       /** This filter is documented in wp-admin/includes/media.php */

        $html = apply_filters( 'media_send_to_editor', $html, $id, $attachment );
 
        wp_send_json_success( $html );
        $html = apply_filters( 'media_send_to_editor', $html, $id, $attachment );
 
        wp_send_json_success( $html );


@@ -2044,7 +2124,7 @@ function wp_ajax_send_attachment_to_editor() {
 function wp_ajax_send_link_to_editor() {
        check_ajax_referer( 'media-send-to-editor', 'nonce' );
 
 function wp_ajax_send_link_to_editor() {
        check_ajax_referer( 'media-send-to-editor', 'nonce' );
 

-       if ( ! $src = stripslashes( $_POST['src'] ) )
+       if ( ! $src = wp_unslash( $_POST['src'] ) )

                wp_send_json_error();
 
        if ( ! strpos( $src, '://' ) )
                wp_send_json_error();
 
        if ( ! strpos( $src, '://' ) )


@@ -2053,7 +2133,7 @@ function wp_ajax_send_link_to_editor() {
        if ( ! $src = esc_url_raw( $src ) )
                wp_send_json_error();
 
        if ( ! $src = esc_url_raw( $src ) )
                wp_send_json_error();
 

-       if ( ! $title = trim( stripslashes( $_POST['title'] ) ) )
+       if ( ! $title = trim( wp_unslash( $_POST['title'] ) ) )

                $title = wp_basename( $src );
 
        $html = '';
                $title = wp_basename( $src );
 
        $html = '';


@@ -2066,7 +2146,101 @@ function wp_ajax_send_link_to_editor() {
                && ( 'audio' == $ext_type || 'video' == $ext_type ) )
                        $type = $ext_type;
 
                && ( 'audio' == $ext_type || 'video' == $ext_type ) )
                        $type = $ext_type;
 

+       /** This filter is documented in wp-admin/includes/media.php */

        $html = apply_filters( $type . '_send_to_editor_url', $html, $src, $title );
 
        wp_send_json_success( $html );
 }
        $html = apply_filters( $type . '_send_to_editor_url', $html, $src, $title );
 
        wp_send_json_success( $html );
 }

+
+/**
+ * Heartbeat API (experimental)
+ *
+ * Runs when the user is logged in.
+ */
+function wp_ajax_heartbeat() {
+       if ( empty( $_POST['_nonce'] ) )
+               wp_send_json_error();
+
+       $response = array();
+
+       if ( false === wp_verify_nonce( $_POST['_nonce'], 'heartbeat-nonce' ) ) {
+               // User is logged in but nonces have expired.
+               $response['nonces_expired'] = true;
+               wp_send_json($response);
+       }
+
+       // screen_id is the same as $current_screen->id and the JS global 'pagenow'
+       if ( ! empty($_POST['screen_id']) )
+               $screen_id = sanitize_key($_POST['screen_id']);
+       else
+               $screen_id = 'front';
+
+       if ( ! empty($_POST['data']) ) {
+               $data = (array) $_POST['data'];
+
+               /**
+                * Filter the Heartbeat response received.
+                *
+                * @since 3.6.0
+                *
+                * @param array|object $response  The Heartbeat response object or array.
+                * @param array        $data      The $_POST data sent.
+                * @param string       $screen_id The screen id.
+                */
+               $response = apply_filters( 'heartbeat_received', $response, $data, $screen_id );
+       }
+
+       /**
+        * Filter the Heartbeat response sent.
+        *
+        * @since 3.6.0
+        *
+        * @param array|object $response  The Heartbeat response object or array.
+        * @param string       $screen_id The screen id.
+        */
+       $response = apply_filters( 'heartbeat_send', $response, $screen_id );
+
+       /**
+        * Fires when Heartbeat ticks in logged-in environments.
+        *
+        * Allows the transport to be easily replaced with long-polling.
+        *
+        * @since 3.6.0
+        *
+        * @param array|object $response  The Heartbeat response object or array.
+        * @param string       $screen_id The screen id.
+        */
+       do_action( 'heartbeat_tick', $response, $screen_id );
+
+       // Send the current time according to the server
+       $response['server_time'] = time();
+
+       wp_send_json($response);
+}
+
+function wp_ajax_get_revision_diffs() {
+       require ABSPATH . 'wp-admin/includes/revision.php';
+
+       if ( ! $post = get_post( (int) $_REQUEST['post_id'] ) )
+               wp_send_json_error();
+
+       if ( ! current_user_can( 'read_post', $post->ID ) )
+               wp_send_json_error();
+
+       // Really just pre-loading the cache here.
+       if ( ! $revisions = wp_get_post_revisions( $post->ID, array( 'check_enabled' => false ) ) )
+               wp_send_json_error();
+
+       $return = array();
+       @set_time_limit( 0 );
+
+       foreach ( $_REQUEST['compare'] as $compare_key ) {
+               list( $compare_from, $compare_to ) = explode( ':', $compare_key ); // from:to
+
+               $return[] = array(
+                       'id' => $compare_key,
+                       'fields' => wp_get_revision_ui_diff( $post, $compare_from, $compare_to ),
+               );
+       }
+       wp_send_json_success( $return );
+}