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<title>[37741] trunk/src: Editor: after inserting a link detect if the URL is broken, first run.</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/37741">37741</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/37741","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>azaozz</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-06-17 20:40:04 +0000 (Fri, 17 Jun 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'>Editor: after inserting a link detect if the URL is broken, first run.

Props iseulde, azaozz.
See <a href="https://core.trac.wordpress.org/ticket/36638">#36638</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadminadminajaxphp">trunk/src/wp-admin/admin-ajax.php</a></li>
<li><a href="#trunksrcwpadminincludesajaxactionsphp">trunk/src/wp-admin/includes/ajax-actions.php</a></li>
<li><a href="#trunksrcwpincludesclasswpeditorphp">trunk/src/wp-includes/class-wp-editor.php</a></li>
<li><a href="#trunksrcwpincludescsseditorcss">trunk/src/wp-includes/css/editor.css</a></li>
<li><a href="#trunksrcwpincludesjstinymcepluginswplinkpluginjs">trunk/src/wp-includes/js/tinymce/plugins/wplink/plugin.js</a></li>
<li><a href="#trunksrcwpincludesjstinymceskinswordpresswpcontentcss">trunk/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css</a></li>
<li><a href="#trunksrcwpincludesjswplinkjs">trunk/src/wp-includes/js/wplink.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpadminadminajaxphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/admin-ajax.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/admin-ajax.php 2016-06-17 18:36:03 UTC (rev 37740)
+++ trunk/src/wp-admin/admin-ajax.php   2016-06-17 20:40:04 UTC (rev 37741)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -64,7 +64,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        'parse-media-shortcode', 'destroy-sessions', 'install-plugin', 'update-plugin', 'press-this-save-post',
</span><span class="cx" style="display: block; padding: 0 10px">        'press-this-add-category', 'crop-image', 'generate-password', 'save-wporg-username', 'delete-plugin',
</span><span class="cx" style="display: block; padding: 0 10px">        'search-plugins', 'search-install-plugins', 'activate-plugin', 'update-theme', 'delete-theme',
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        'install-theme',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'install-theme', 'test_url',
</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"> // Deprecated
</span></span></pre></div>
<a id="trunksrcwpadminincludesajaxactionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/includes/ajax-actions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/includes/ajax-actions.php      2016-06-17 18:36:03 UTC (rev 37740)
+++ trunk/src/wp-admin/includes/ajax-actions.php        2016-06-17 20:40:04 UTC (rev 37741)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3832,3 +3832,45 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        wp_send_json_success( $status );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+/**
+ * Ajax handler for testing if an URL exists. Used in the editor.
+ *
+ * @since 4.6.0
+ */
+function wp_ajax_test_url() {
+       if ( ! current_user_can( 'edit_posts' ) || ! wp_verify_nonce( $_POST['nonce'], 'wp-test-url' ) ) {
+               wp_send_json_error();
+       }
+
+       $href = esc_url_raw( $_POST['href'] );
+
+       // Relative URL
+       if ( strpos( $href, '//' ) !== 0 && in_array( $href[0], array( '/', '#', '?' ), true ) ) {
+               $href = get_bloginfo( 'url' ) . $href;
+       }
+
+       $response = wp_safe_remote_get( $href, array(
+               'timeout' => 15,
+               // Use an explicit user-agent
+               'user-agent' => 'WordPress URL Test',
+       ) );
+
+       $message = null;
+
+       if ( is_wp_error( $response ) ) {
+               $error = $response->get_error_message();
+
+               if ( strpos( $message, 'resolve host' ) !== false ) {
+                       $message = array( 'error' => __( 'Invalid host name.' ) );
+               }
+
+               wp_send_json_error( $message );
+       }
+
+       if ( wp_remote_retrieve_response_code( $response ) === 404 ) {
+               wp_send_json_error( array( 'error' => __( 'Not found, HTTP error 404.' ) ) );
+       }
+
+       wp_send_json_success();
+}
</ins></span></pre></div>
<a id="trunksrcwpincludesclasswpeditorphp"></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-editor.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-editor.php 2016-06-17 18:36:03 UTC (rev 37740)
+++ trunk/src/wp-includes/class-wp-editor.php   2016-06-17 20:40:04 UTC (rev 37741)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1063,6 +1063,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        'Ctrl + letter:' => __( 'Ctrl + letter:' ),
</span><span class="cx" style="display: block; padding: 0 10px">                        'Letter' => __( 'Letter' ),
</span><span class="cx" style="display: block; padding: 0 10px">                        'Action' => __( 'Action' ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'Invalid host name.' => __( 'Invalid host name.' ),
</ins><span class="cx" style="display: block; padding: 0 10px">                         'To move focus to other buttons use Tab or the arrow keys. To return focus to the editor press Escape or use one of the buttons.' =>
</span><span class="cx" style="display: block; padding: 0 10px">                                __( 'To move focus to other buttons use Tab or the arrow keys. To return focus to the editor press Escape or use one of the buttons.' ),
</span><span class="cx" style="display: block; padding: 0 10px">                        'When starting a new paragraph with one of these formatting shortcuts followed by a space, the formatting will be applied automatically. Press Backspace or Escape to undo.' =>
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1283,8 +1284,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">                </script>
</span><span class="cx" style="display: block; padding: 0 10px">                <?php
</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 ( in_array( 'wplink', self::$plugins, true ) || in_array( 'link', self::$qt_buttons, true ) )
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $has_wplink = in_array( 'wplink', self::$plugins, true );
+
+               if ( $has_wplink ) {
+                       echo '<input type="hidden" id="_wplink_urltest_nonce" value="' . wp_create_nonce( 'wp-test-url' ) . '" />';
+               }
+
+               if ( $has_wplink || in_array( 'link', self::$qt_buttons, true ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                         self::wp_link_dialog();
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                }
</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">                 * Fires after any core TinyMCE editor instances are created.
</span></span></pre></div>
<a id="trunksrcwpincludescsseditorcss"></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/css/editor.css</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/css/editor.css      2016-06-17 18:36:03 UTC (rev 37740)
+++ trunk/src/wp-includes/css/editor.css        2016-06-17 20:40:04 UTC (rev 37741)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1757,6 +1757,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">        cursor: pointer;
</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">+div.wp-link-preview a.wplink-url-error {
+       color: #a00;
+}
+
+div.wp-link-preview a.wplink-url-error:hover {
+       color: #f00;
+}
+
</ins><span class="cx" style="display: block; padding: 0 10px"> div.wp-link-input {
</span><span class="cx" style="display: block; padding: 0 10px">        float: left;
</span><span class="cx" style="display: block; padding: 0 10px">        margin: 2px;
</span></span></pre></div>
<a id="trunksrcwpincludesjstinymcepluginswplinkpluginjs"></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/js/tinymce/plugins/wplink/plugin.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/js/tinymce/plugins/wplink/plugin.js 2016-06-17 18:36:03 UTC (rev 37740)
+++ trunk/src/wp-includes/js/tinymce/plugins/wplink/plugin.js   2016-06-17 20:40:04 UTC (rev 37741)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -93,6 +93,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                var doingUndoRedo;
</span><span class="cx" style="display: block; padding: 0 10px">                var doingUndoRedoTimer;
</span><span class="cx" style="display: block; padding: 0 10px">                var $ = window.jQuery;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                var urlErrors = {};
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                function getSelectedLink() {
</span><span class="cx" style="display: block; padding: 0 10px">                        var href, html,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -131,11 +132,62 @@
</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">                function removePlaceholderStrings( content, dataAttr ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        if ( dataAttr ) {
-                               content = content.replace( / data-wplink-edit="true"/g, '' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 return content.replace( /(<a [^>]+>)([\s\S]*?)<\/a>/g, function( all, tag, text ) {
+                               if ( tag.indexOf( ' href="_wp_link_placeholder"' ) > -1 ) {
+                                       return text;
+                               }
+
+                               if ( dataAttr ) {
+                                       tag = tag.replace( / data-wplink-edit="true"/g, '' );
+                               }
+
+                               tag = tag.replace( / data-wplink-url-error="true"/g, '' );
+
+                               return tag + text + '</a>';
+                       });
+               }
+
+               function checkLink( node ) {
+                       var $link = editor.$( node );
+                       var href = $link.attr( 'href' );
+
+                       if ( ! href || typeof $ === 'undefined' ) {
+                               return;
</ins><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">-                        return content.replace( /<a [^>]*?href="_wp_link_placeholder"[^>]*>([\s\S]+)<\/a>/g, '$1' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 // Early check
+                       if ( /^http/i.test( href ) && ! /\.[a-z]{2,63}(\/|$)/i.test( href ) ) {
+                               urlErrors[href] = tinymce.translate( 'Invalid host name.' );
+                       }
+
+                       if ( urlErrors.hasOwnProperty( href ) ) {
+                               $link.attr( 'data-wplink-url-error', 'true' );
+                               return;
+                       } else {
+                               $link.removeAttr( 'data-wplink-url-error' );
+                       }
+
+                       $.post(
+                               window.ajaxurl, {
+                                       action: 'test_url',
+                                       nonce: $( '#_wplink_urltest_nonce' ).val(),
+                                       href: href
+                               },
+                               'json'
+                       ).done( function( response ) {
+                               if ( response.success ) {
+                                       return;
+                               }
+
+                               if ( response.data && response.data.error ) {
+                                       urlErrors[href] = response.data.error;
+                                       $link.attr( 'data-wplink-url-error', 'true' );
+
+                                       if ( toolbar && toolbar.visible() ) {
+                                               toolbar.$el.find( '.wp-link-preview a' ).addClass( 'wplink-url-error' ).attr( 'title', editor.dom.encode( response.data.error ) );
+                                       }
+                               }
+                       });
</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">                editor.on( 'preinit', function() {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -231,6 +283,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                if ( ! tinymce.trim( linkNode.innerHTML ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                        editor.$( linkNode ).text( text || href );
</span><span class="cx" style="display: block; padding: 0 10px">                                }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                               checkLink( linkNode );
</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">                        inputInstance.reset();
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -473,7 +527,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                editor.on( 'wptoolbar', function( event ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        var linkNode = editor.dom.getParent( event.element, 'a' ),
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $linkNode, href, edit;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         $linkNode, href, edit, title;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( typeof window.wpLink !== 'undefined' && window.wpLink.modalOpen ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                editToolbar.tempHide = true;
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -498,6 +552,13 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                        previewInstance.setURL( href );
</span><span class="cx" style="display: block; padding: 0 10px">                                        event.element = linkNode;
</span><span class="cx" style="display: block; padding: 0 10px">                                        event.toolbar = toolbar;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                        title = urlErrors.hasOwnProperty( href ) ? editor.dom.encode( urlErrors[ href ] ) : null;
+
+                                       if ( $linkNode.attr( 'data-wplink-url-error' ) === 'true' ) {
+                                               toolbar.$el.find( '.wp-link-preview a' ).addClass( 'wplink-url-error' ).attr( 'title', title );
+                                       } else {
+                                               toolbar.$el.find( '.wp-link-preview a' ).removeClass( 'wplink-url-error' ).attr( 'title', null );
+                                       }
</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">@@ -555,7 +616,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        close: function() {
</span><span class="cx" style="display: block; padding: 0 10px">                                editToolbar.tempHide = false;
</span><span class="cx" style="display: block; padding: 0 10px">                                editor.execCommand( 'wp_link_cancel' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 },
+                       checkLink: checkLink
</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"> } )( window.tinymce );
</span></span></pre></div>
<a id="trunksrcwpincludesjstinymceskinswordpresswpcontentcss"></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/js/tinymce/skins/wordpress/wp-content.css</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css   2016-06-17 18:36:03 UTC (rev 37740)
+++ trunk/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css     2016-06-17 20:40:04 UTC (rev 37741)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -205,6 +205,13 @@
</span><span class="cx" style="display: block; padding: 0 10px">        visibility: hidden;
</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">+a[data-wplink-url-error],
+a[data-wplink-url-error]:hover,
+a[data-wplink-url-error]:focus {
+       outline: 2px dotted #dc3232;
+       position: relative;
+}
+
</ins><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px">  * WP Views
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span></span></pre></div>
<a id="trunksrcwpincludesjswplinkjs"></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/js/wplink.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/js/wplink.js        2016-06-17 18:36:03 UTC (rev 37740)
+++ trunk/src/wp-includes/js/wplink.js  2016-06-17 20:40:04 UTC (rev 37741)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -434,6 +434,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        editor.focus();
</span><span class="cx" style="display: block; padding: 0 10px">                        editor.nodeChanged();
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        if ( link && editor.plugins.wplink ) {
+                               editor.plugins.wplink.checkLink( link );
+                       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                         // Audible confirmation message when a link has been inserted in the Editor.
</span><span class="cx" style="display: block; padding: 0 10px">                        wp.a11y.speak( wpLinkL10n.linkInserted );
</span><span class="cx" style="display: block; padding: 0 10px">                },
</span></span></pre>
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