<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>[32202] branches/3.7: In Multisite, prevent plugins from unintentionally switching sites.</title>
</head>
<body>

<style type="text/css"><!--
#msg dl.meta { border: 1px #006 solid; background: #369; padding: 6px; color: #fff; }
#msg dl.meta dt { float: left; width: 6em; font-weight: bold; }
#msg dt:after { content:':';}
#msg dl, #msg dt, #msg ul, #msg li, #header, #footer, #logmsg { font-family: verdana,arial,helvetica,sans-serif; font-size: 10pt;  }
#msg dl a { font-weight: bold}
#msg dl a:link    { color:#fc3; }
#msg dl a:active  { color:#ff0; }
#msg dl a:visited { color:#cc6; }
h3 { font-family: verdana,arial,helvetica,sans-serif; font-size: 10pt; font-weight: bold; }
#msg pre { overflow: auto; background: #ffc; border: 1px #fa0 solid; padding: 6px; }
#logmsg { background: #ffc; border: 1px #fa0 solid; padding: 1em 1em 0 1em; }
#logmsg p, #logmsg pre, #logmsg blockquote { margin: 0 0 1em 0; }
#logmsg p, #logmsg li, #logmsg dt, #logmsg dd { line-height: 14pt; }
#logmsg h1, #logmsg h2, #logmsg h3, #logmsg h4, #logmsg h5, #logmsg h6 { margin: .5em 0; }
#logmsg h1:first-child, #logmsg h2:first-child, #logmsg h3:first-child, #logmsg h4:first-child, #logmsg h5:first-child, #logmsg h6:first-child { margin-top: 0; }
#logmsg ul, #logmsg ol { padding: 0; list-style-position: inside; margin: 0 0 0 1em; }
#logmsg ul { text-indent: -1em; padding-left: 1em; }#logmsg ol { text-indent: -1.5em; padding-left: 1.5em; }
#logmsg > ul, #logmsg > ol { margin: 0 0 1em 0; }
#logmsg pre { background: #eee; padding: 1em; }
#logmsg blockquote { border: 1px solid #fa0; border-left-width: 10px; padding: 1em 1em 0 1em; background: white;}
#logmsg dl { margin: 0; }
#logmsg dt { font-weight: bold; }
#logmsg dd { margin: 0; padding: 0 0 0.5em 0; }
#logmsg dd:before { content:'\00bb';}
#logmsg table { border-spacing: 0px; border-collapse: collapse; border-top: 4px solid #fa0; border-bottom: 1px solid #fa0; background: #fff; }
#logmsg table th { text-align: left; font-weight: normal; padding: 0.2em 0.5em; border-top: 1px dotted #fa0; }
#logmsg table td { text-align: right; border-top: 1px dotted #fa0; padding: 0.2em 0.5em; }
#logmsg table thead th { text-align: center; border-bottom: 1px solid #fa0; }
#logmsg table th.Corner { text-align: left; }
#logmsg hr { border: none 0; border-top: 2px dashed #fa0; height: 1px; }
#header, #footer { color: #fff; background: #636; border: 1px #300 solid; padding: 6px; }
#patch { width: 100%; }
#patch h4 {font-family: verdana,arial,helvetica,sans-serif;font-size:10pt;padding:8px;background:#369;color:#fff;margin:0;}
#patch .propset h4, #patch .binary h4 {margin:0;}
#patch pre {padding:0;line-height:1.2em;margin:0;}
#patch .diff {width:100%;background:#eee;padding: 0 0 10px 0;overflow:auto;}
#patch .propset .diff, #patch .binary .diff  {padding:10px 0;}
#patch span {display:block;padding:0 10px;}
#patch .modfile, #patch .addfile, #patch .delfile, #patch .propset, #patch .binary, #patch .copfile {border:1px solid #ccc;margin:10px 0;}
#patch ins {background:#dfd;text-decoration:none;display:block;padding:0 10px;}
#patch del {background:#fdd;text-decoration:none;display:block;padding:0 10px;}
#patch .lines, .info {color:#888;background:#fff;}
--></style>
<div id="msg">
<dl class="meta" style="font-size: 105%">
<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/32202">32202</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/32202","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>2015-04-20 13:28:00 +0000 (Mon, 20 Apr 2015)</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'>In Multisite, prevent plugins from unintentionally switching sites. Merge of <a href="https://core.trac.wordpress.org/changeset/32173">[32173]</a> to the 3.7 branch.

Props mdawaffe, pento.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches37srcwpincludescapabilitiesphp">branches/3.7/src/wp-includes/capabilities.php</a></li>
<li><a href="#branches37testsphpunittestsusercapabilitiesphp">branches/3.7/tests/phpunit/tests/user/capabilities.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branches37srcwpincludescapabilitiesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/3.7/src/wp-includes/capabilities.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/3.7/src/wp-includes/capabilities.php     2015-04-20 13:25:25 UTC (rev 32201)
+++ branches/3.7/src/wp-includes/capabilities.php       2015-04-20 13:28:00 UTC (rev 32202)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1304,21 +1304,25 @@
</span><span class="cx" style="display: block; padding: 0 10px">  * @return bool
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><span class="cx" style="display: block; padding: 0 10px"> function current_user_can_for_blog( $blog_id, $capability ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        if ( is_multisite() )
-               switch_to_blog( $blog_id );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $switched = is_multisite() ? switch_to_blog( $blog_id ) : false;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        $current_user = wp_get_current_user();
</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 ( empty( $current_user ) )
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( empty( $current_user ) ) {
+               if ( $switched ) {
+                       restore_current_blog();
+               }
</ins><span class="cx" style="display: block; padding: 0 10px">                 return false;
</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">        $args = array_slice( func_get_args(), 2 );
</span><span class="cx" style="display: block; padding: 0 10px">        $args = array_merge( array( $capability ), $args );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        $can = call_user_func_array( array( $current_user, 'has_cap' ), $args );
</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 ( is_multisite() )
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( $switched ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                 restore_current_blog();
</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">        return $can;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="branches37testsphpunittestsusercapabilitiesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/3.7/tests/phpunit/tests/user/capabilities.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/3.7/tests/phpunit/tests/user/capabilities.php    2015-04-20 13:25:25 UTC (rev 32201)
+++ branches/3.7/tests/phpunit/tests/user/capabilities.php      2015-04-20 13:28:00 UTC (rev 32202)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -635,6 +635,37 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertFalse ( isset( $author->caps['foo'] ) );
</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">+        function test_borked_current_user_can_for_blog() {
+               if ( ! is_multisite() ) {
+                       $this->markTestSkipped( 'Test only runs in multisite' );
+                       return;
+               }
+
+               $orig_blog_id = get_current_blog_id();
+               $blog_id = $this->factory->blog->create();
+
+               $this->_nullify_current_user();
+
+               add_action( 'switch_blog', array( $this, '_nullify_current_user_and_keep_nullifying_user' ) );
+
+               current_user_can_for_blog( $blog_id, 'edit_posts' );
+
+               $this->assertEquals( $orig_blog_id, get_current_blog_id() );
+       }
+
+       function _nullify_current_user() {
+               // Prevents fatal errors in ::tearDown()'s and other uses of restore_current_blog()
+               $function_stack = wp_debug_backtrace_summary( null, 0, false );
+               if ( in_array( 'restore_current_blog', $function_stack ) ) {
+                       return;
+               }
+               $GLOBALS['current_user'] = null;
+       }
+
+       function _nullify_current_user_and_keep_nullifying_user() {
+               add_action( 'set_current_user', array( $this, '_nullify_current_user' ) );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         /**
</span><span class="cx" style="display: block; padding: 0 10px">         * @ticket 18932
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span></span></pre>
</div>
</div>

</body>
</html>