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<title>[43813] branches/5.0: KSES: Allow the `download` attribute on `<a>` tags.</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/43813">43813</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/43813","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>pento</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2018-10-24 01:18:38 +0000 (Wed, 24 Oct 2018)</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'>KSES: Allow the `download` attribute on `<a>` tags.
To avoid this being a vector for bypassing the filetypes that are allowed to be uploaded, this attribute is only allowed to be added without a value.
Props kalpshit, arshidkv12, welcher, peterwilsoncc, marina_wp, pento.
See <a href="https://core.trac.wordpress.org/ticket/44724">#44724</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches50srcwpincludesksesphp">branches/5.0/src/wp-includes/kses.php</a></li>
<li><a href="#branches50testsphpunittestsksesphp">branches/5.0/tests/phpunit/tests/kses.php</a></li>
</ul>
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<h3>Diff</h3>
<a id="branches50srcwpincludesksesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.0/src/wp-includes/kses.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/src/wp-includes/kses.php 2018-10-24 00:35:51 UTC (rev 43812)
+++ branches/5.0/src/wp-includes/kses.php 2018-10-24 01:18:38 UTC (rev 43813)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -66,6 +66,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'rev' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'name' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'target' => true,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'download' => array(
+ 'valueless' => 'y',
+ ),
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'abbr' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'acronym' => array(),
</span></span></pre></div>
<a id="branches50testsphpunittestsksesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.0/tests/phpunit/tests/kses.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/tests/phpunit/tests/kses.php 2018-10-24 00:35:51 UTC (rev 43812)
+++ branches/5.0/tests/phpunit/tests/kses.php 2018-10-24 01:18:38 UTC (rev 43813)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -46,11 +46,18 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'rev' => 'revision',
</span><span class="cx" style="display: block; padding: 0 10px"> 'name' => 'name',
</span><span class="cx" style="display: block; padding: 0 10px"> 'target' => '_blank',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'download' => '',
</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"> foreach ( $attributes as $name => $value ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $string = "<a $name='$value'>I link this</a>";
- $expect_string = "<a $name='" . trim( $value, ';' ) . "'>I link this</a>";
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( $value ) {
+ $attr = "$name='$value'";
+ $expected_attr = "$name='" . trim( $value, ';' ) . "'";
+ } else {
+ $attr = $expected_attr = $name;
+ }
+ $string = "<a $attr>I link this</a>";
+ $expect_string = "<a $expected_attr>I link this</a>";
</ins><span class="cx" style="display: block; padding: 0 10px"> $this->assertEquals( $expect_string, wp_kses( $string, $allowedposttags ) );
</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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