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<title>[41392] branches/4.8: Widgets: Prevent visual Text widget from decoding encoded HTML.</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/41392">41392</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/41392","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>ocean90</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2017-09-19 07:43:34 +0000 (Tue, 19 Sep 2017)</dd>
</dl>
<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Widgets: Prevent visual Text widget from decoding encoded HTML.
Also apply `the_editor_content` filters on widget `text` with `format_for_editor()` as is done for the post editor.
Merge of <a href="https://core.trac.wordpress.org/changeset/41260">[41260]</a> to the 4.8 branch.
Amends <a href="https://core.trac.wordpress.org/changeset/40631">[40631]</a>.
Props westonruter, azaozz.
See <a href="https://core.trac.wordpress.org/ticket/35243">#35243</a>.
Fixes <a href="https://core.trac.wordpress.org/ticket/41596">#41596</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches48srcwpadminjswidgetstextwidgetsjs">branches/4.8/src/wp-admin/js/widgets/text-widgets.js</a></li>
<li><a href="#branches48srcwpincludeswidgetsclasswpwidgettextphp">branches/4.8/src/wp-includes/widgets/class-wp-widget-text.php</a></li>
<li><a href="#branches48testsphpunittestswidgetstextwidgetphp">branches/4.8/tests/phpunit/tests/widgets/text-widget.php</a></li>
</ul>
<h3>Property Changed</h3>
<ul>
<li><a href="#branches48">branches/4.8/</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/4.8
</span><span class="cx" style="display: block; padding: 0 10px">===================================================================
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">--- branches/4.8 2017-09-19 07:38:21 UTC (rev 41391)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.8 2017-09-19 07:43:34 UTC (rev 41392)
</ins><a id="branches48"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/4.8</h4>
<pre class="diff"><span>
</span></pre></div>
<a id="svnmergeinfo"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: svn:mergeinfo</h4></div>
<span class="cx" style="display: block; padding: 0 10px"> /branches/3.1:18031
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/3.3:20543
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/3.4:21757
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:18512,40872-40873,40879,40881,40883,40885,40892-40893,40896-40897,40901,40926-40927,40939,40941,40961,40990-40991,40995,41000,41009,41020,41022,41028,41035,41037,41047,41050,41070,41072,41086,41088,41094,41112,41115-41116,41132,41134,41136,41139,41141,41251,41294,41335
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:18512,40872-40873,40879,40881,40883,40885,40892-40893,40896-40897,40901,40926-40927,40939,40941,40961,40990-40991,40995,41000,41009,41020,41022,41028,41035,41037,41047,41050,41070,41072,41086,41088,41094,41112,41115-41116,41132,41134,41136,41139,41141,41251,41260,41294,41335
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches48srcwpadminjswidgetstextwidgetsjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.8/src/wp-admin/js/widgets/text-widgets.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.8/src/wp-admin/js/widgets/text-widgets.js 2017-09-19 07:38:21 UTC (rev 41391)
+++ branches/4.8/src/wp-admin/js/widgets/text-widgets.js 2017-09-19 07:43:34 UTC (rev 41392)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -80,7 +80,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> // Sync input fields to hidden sync fields which actually get sent to the server.
</span><span class="cx" style="display: block; padding: 0 10px"> _.each( control.fields, function( fieldInput, fieldName ) {
</span><span class="cx" style="display: block; padding: 0 10px"> fieldInput.on( 'input change', function updateSyncField() {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- var syncInput = control.syncContainer.find( 'input[type=hidden].' + fieldName );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ var syncInput = control.syncContainer.find( '.sync-input.' + fieldName );
</ins><span class="cx" style="display: block; padding: 0 10px"> if ( syncInput.val() !== fieldInput.val() ) {
</span><span class="cx" style="display: block; padding: 0 10px"> syncInput.val( fieldInput.val() );
</span><span class="cx" style="display: block; padding: 0 10px"> syncInput.trigger( 'change' );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -88,7 +88,7 @@
</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"> // Note that syncInput cannot be re-used because it will be destroyed with each widget-updated event.
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- fieldInput.val( control.syncContainer.find( 'input[type=hidden].' + fieldName ).val() );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ fieldInput.val( control.syncContainer.find( '.sync-input.' + fieldName ).val() );
</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">@@ -144,11 +144,11 @@
</span><span class="cx" style="display: block; padding: 0 10px"> var control = this, syncInput;
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> if ( ! control.fields.title.is( document.activeElement ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- syncInput = control.syncContainer.find( 'input[type=hidden].title' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ syncInput = control.syncContainer.find( '.sync-input.title' );
</ins><span class="cx" style="display: block; padding: 0 10px"> control.fields.title.val( syncInput.val() );
</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">- syncInput = control.syncContainer.find( 'input[type=hidden].text' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ syncInput = control.syncContainer.find( '.sync-input.text' );
</ins><span class="cx" style="display: block; padding: 0 10px"> if ( control.fields.text.is( ':visible' ) ) {
</span><span class="cx" style="display: block; padding: 0 10px"> if ( ! control.fields.text.is( document.activeElement ) ) {
</span><span class="cx" style="display: block; padding: 0 10px"> control.fields.text.val( syncInput.val() );
</span></span></pre></div>
<a id="branches48srcwpincludeswidgetsclasswpwidgettextphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.8/src/wp-includes/widgets/class-wp-widget-text.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.8/src/wp-includes/widgets/class-wp-widget-text.php 2017-09-19 07:38:21 UTC (rev 41391)
+++ branches/4.8/src/wp-includes/widgets/class-wp-widget-text.php 2017-09-19 07:43:34 UTC (rev 41392)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -335,6 +335,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 4.8.1 Restored original form to be displayed when in legacy mode.
</span><span class="cx" style="display: block; padding: 0 10px"> * @access public
</span><span class="cx" style="display: block; padding: 0 10px"> * @see WP_Widget_Visual_Text::render_control_template_scripts()
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @see _WP_Editors::editor()
</ins><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @param array $instance Current settings.
</span><span class="cx" style="display: block; padding: 0 10px"> * @return void
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -349,10 +350,31 @@
</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"> <?php if ( ! $this->is_legacy_instance( $instance ) ) : ?>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- <input id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" class="title" type="hidden" value="<?php echo esc_attr( $instance['title'] ); ?>">
- <input id="<?php echo $this->get_field_id( 'text' ); ?>" name="<?php echo $this->get_field_name( 'text' ); ?>" class="text" type="hidden" value="<?php echo esc_attr( $instance['text'] ); ?>">
- <input id="<?php echo $this->get_field_id( 'filter' ); ?>" name="<?php echo $this->get_field_name( 'filter' ); ?>" class="filter" type="hidden" value="on">
- <input id="<?php echo $this->get_field_id( 'visual' ); ?>" name="<?php echo $this->get_field_name( 'visual' ); ?>" class="visual" type="hidden" value="on">
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ <?php
+
+ if ( user_can_richedit() ) {
+ add_filter( 'the_editor_content', 'format_for_editor', 10, 2 );
+ $default_editor = 'tinymce';
+ } else {
+ $default_editor = 'html';
+ }
+
+ /** This filter is documented in wp-includes/class-wp-editor.php */
+ $text = apply_filters( 'the_editor_content', $instance['text'], $default_editor );
+
+ // Reset filter addition.
+ if ( user_can_richedit() ) {
+ remove_filter( 'the_editor_content', 'format_for_editor' );
+ }
+
+ // Prevent premature closing of textarea in case format_for_editor() didn't apply or the_editor_content filter did a wrong thing.
+ $escaped_text = preg_replace( '#</textarea#i', '</textarea', $text );
+
+ ?>
+ <input id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" class="title sync-input" type="hidden" value="<?php echo esc_attr( $instance['title'] ); ?>">
+ <textarea id="<?php echo $this->get_field_id( 'text' ); ?>" name="<?php echo $this->get_field_name( 'text' ); ?>" class="text sync-input" hidden><?php echo $escaped_text; ?></textarea>
+ <input id="<?php echo $this->get_field_id( 'filter' ); ?>" name="<?php echo $this->get_field_name( 'filter' ); ?>" class="filter sync-input" type="hidden" value="on">
+ <input id="<?php echo $this->get_field_id( 'visual' ); ?>" name="<?php echo $this->get_field_name( 'visual' ); ?>" class="visual sync-input" type="hidden" value="on">
</ins><span class="cx" style="display: block; padding: 0 10px"> <?php else : ?>
</span><span class="cx" style="display: block; padding: 0 10px"> <input id="<?php echo $this->get_field_id( 'visual' ); ?>" name="<?php echo $this->get_field_name( 'visual' ); ?>" class="visual" type="hidden" value="">
</span><span class="cx" style="display: block; padding: 0 10px"> <p>
</span></span></pre></div>
<a id="branches48testsphpunittestswidgetstextwidgetphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.8/tests/phpunit/tests/widgets/text-widget.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.8/tests/phpunit/tests/widgets/text-widget.php 2017-09-19 07:38:21 UTC (rev 41391)
+++ branches/4.8/tests/phpunit/tests/widgets/text-widget.php 2017-09-19 07:43:34 UTC (rev 41392)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -446,7 +446,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * @covers WP_Widget_Text::form
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> function test_form() {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ add_filter( 'user_can_richedit', '__return_true' );
</ins><span class="cx" style="display: block; padding: 0 10px"> $widget = new WP_Widget_Text();
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $widget->_set( 2 );
</ins><span class="cx" style="display: block; padding: 0 10px"> $instance = array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'title' => 'Title',
</span><span class="cx" style="display: block; padding: 0 10px"> 'text' => 'Text',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -458,7 +460,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $widget->form( $instance );
</span><span class="cx" style="display: block; padding: 0 10px"> $form = ob_get_clean();
</span><span class="cx" style="display: block; padding: 0 10px"> $this->assertContains( 'class="visual" type="hidden" value=""', $form );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $this->assertNotContains( 'class="visual" type="hidden" value="on"', $form );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $this->assertNotContains( 'class="visual sync-input" type="hidden" value="on"', $form );
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $instance = array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'title' => 'Title',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -469,8 +471,8 @@
</span><span class="cx" style="display: block; padding: 0 10px"> ob_start();
</span><span class="cx" style="display: block; padding: 0 10px"> $widget->form( $instance );
</span><span class="cx" style="display: block; padding: 0 10px"> $form = ob_get_clean();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $this->assertContains( 'class="visual" type="hidden" value="on"', $form );
- $this->assertNotContains( 'class="visual" type="hidden" value=""', $form );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $this->assertContains( 'class="visual sync-input" type="hidden" value="on"', $form );
+ $this->assertNotContains( 'class="visual sync-input" type="hidden" value=""', $form );
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $instance = array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'title' => 'Title',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -481,12 +483,12 @@
</span><span class="cx" style="display: block; padding: 0 10px"> ob_start();
</span><span class="cx" style="display: block; padding: 0 10px"> $widget->form( $instance );
</span><span class="cx" style="display: block; padding: 0 10px"> $form = ob_get_clean();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $this->assertContains( 'class="visual" type="hidden" value="on"', $form );
- $this->assertNotContains( 'class="visual" type="hidden" value=""', $form );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $this->assertContains( 'class="visual sync-input" type="hidden" value="on"', $form );
+ $this->assertNotContains( 'class="visual sync-input" type="hidden" value=""', $form );
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $instance = array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'title' => 'Title',
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'text' => 'Text',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'text' => 'This is some HTML Code: <code><strong>BOLD!</strong></code>',
</ins><span class="cx" style="display: block; padding: 0 10px"> 'filter' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'visual' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -494,8 +496,24 @@
</span><span class="cx" style="display: block; padding: 0 10px"> ob_start();
</span><span class="cx" style="display: block; padding: 0 10px"> $widget->form( $instance );
</span><span class="cx" style="display: block; padding: 0 10px"> $form = ob_get_clean();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $this->assertContains( 'class="visual" type="hidden" value="on"', $form );
- $this->assertNotContains( 'class="visual" type="hidden" value=""', $form );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $this->assertContains( 'class="visual sync-input" type="hidden" value="on"', $form );
+ $this->assertContains( '<code>&lt;strong&gt;BOLD!', $form );
+ $this->assertNotContains( 'class="visual sync-input" type="hidden" value=""', $form );
+
+ remove_filter( 'user_can_richedit', '__return_true' );
+ add_filter( 'user_can_richedit', '__return_false' );
+ $instance = array(
+ 'title' => 'Title',
+ 'text' => 'Evil:</textarea><script>alert("XSS")</script>',
+ 'filter' => true,
+ 'visual' => true,
+ );
+ $this->assertFalse( $widget->is_legacy_instance( $instance ) );
+ ob_start();
+ $widget->form( $instance );
+ $form = ob_get_clean();
+ $this->assertNotContains( 'Evil:</textarea>', $form );
+ $this->assertContains( 'Evil:</textarea>', $form );
</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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