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<title>[13409] trunk/wp-admin: Introduce send_nosniff_header()
and use it to turn off content sniffing in supported browsers.</title>
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<body>
<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/13409">13409</a></dd>
<dt>Author</dt> <dd>westi</dd>
<dt>Date</dt> <dd>2010-02-25 21:41:33 +0000 (Thu, 25 Feb 2010)</dd>
</dl>
<h3>Log Message</h3>
<pre>Introduce send_nosniff_header() and use it to turn off content sniffing in supported browsers. Fixes <a href="http://trac.wordpress.org/ticket/10671">#10671</a> props chrisscott and niallkennedy.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpadminadminajaxphp">trunk/wp-admin/admin-ajax.php</a></li>
<li><a href="#trunkwpadminincludesmiscphp">trunk/wp-admin/includes/misc.php</a></li>
<li><a href="#trunkwpadminindexextraphp">trunk/wp-admin/index-extra.php</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunkwpadminadminajaxphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/admin-ajax.php (13408 => 13409)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/admin-ajax.php 2010-02-25 21:16:07 UTC (rev 13408)
+++ trunk/wp-admin/admin-ajax.php 2010-02-25 21:41:33 UTC (rev 13409)
</span><span class="lines">@@ -21,6 +21,7 @@
</span><span class="cx">
</span><span class="cx"> require_once('includes/admin.php');
</span><span class="cx"> @header('Content-Type: text/html; charset=' . get_option('blog_charset'));
</span><ins>+send_nosniff_header();
</ins><span class="cx">
</span><span class="cx"> do_action('admin_init');
</span><span class="cx">
</span></span></pre></div>
<a id="trunkwpadminincludesmiscphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/includes/misc.php (13408 => 13409)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/includes/misc.php 2010-02-25 21:16:07 UTC (rev 13408)
+++ trunk/wp-admin/includes/misc.php 2010-02-25 21:41:33 UTC (rev 13409)
</span><span class="lines">@@ -649,4 +649,17 @@
</span><span class="cx"> unlink($path);
</span><span class="cx"> return true;
</span><span class="cx"> }
</span><ins>+
+/**
+ * Send a HTTP header to disable content type sniffing in browsers which support it.
+ *
+ * @link http://blogs.msdn.com/ie/archive/2008/07/02/ie8-security-part-v-comprehensive-protection.aspx
+ * @link http://src.chromium.org/viewvc/chrome?view=rev&revision=6985
+ *
+ * @since 3.0.0.
+ * @return none
+ */
+function send_nosniff_header() {
+ @header( 'X-Content-Type-Options: nosniff' );
+}
</ins><span class="cx"> ?>
</span></span></pre></div>
<a id="trunkwpadminindexextraphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/index-extra.php (13408 => 13409)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/index-extra.php 2010-02-25 21:16:07 UTC (rev 13408)
+++ trunk/wp-admin/index-extra.php 2010-02-25 21:41:33 UTC (rev 13409)
</span><span class="lines">@@ -13,6 +13,7 @@
</span><span class="cx"> require( 'includes/dashboard.php' );
</span><span class="cx">
</span><span class="cx"> @header( 'Content-Type: ' . get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' ) );
</span><ins>+send_nosniff_header();
</ins><span class="cx">
</span><span class="cx"> switch ( $_GET['jax'] ) {
</span><span class="cx">
</span></span></pre>
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