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<title>[13926] trunk/wp-admin/network.php:
  block subdomain install when install is in a folder, see #12736</title>
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<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/13926">13926</a></dd>
<dt>Author</dt> <dd>wpmuguru</dd>
<dt>Date</dt> <dd>2010-04-02 02:04:25 +0000 (Fri, 02 Apr 2010)</dd>
</dl>

<h3>Log Message</h3>
<pre>block subdomain install when install is in a folder, see <a href="http://trac.wordpress.org/ticket/12736">#12736</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpadminnetworkphp">trunk/wp-admin/network.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkwpadminnetworkphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/network.php (13925 => 13926)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/network.php        2010-04-02 01:26:44 UTC (rev 13925)
+++ trunk/wp-admin/network.php        2010-04-02 02:04:25 UTC (rev 13926)
</span><span class="lines">@@ -37,6 +37,19 @@
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> /**
</span><ins>+ * Allow subdomain install
+ *
+ * @since 3.0.0
+ * @return bool - whether subdomain install is allowed
+ */
+function allow_subdomain_install() {
+        $path = preg_replace( '|https?://[^/]|', '', get_option( 'siteurl' ) );
+        if( strlen( $path ) &gt; 1 || 'localhost' == $_SERVER[ 'HTTP_HOST' ] )
+                return false;
+
+        return true;
+}
+/**
</ins><span class="cx">  * Get base domain of network.
</span><span class="cx">  *
</span><span class="cx">  * @since 3.0.0
</span><span class="lines">@@ -134,7 +147,7 @@
</span><span class="cx">                 echo '&lt;p&gt;' . __( 'If &lt;code&gt;mod_rewrite&lt;/code&gt; is disabled, ask your administrator to enable that module, or look at the &lt;a href=&quot;http://httpd.apache.org/docs/mod/mod_rewrite.html&quot;&gt;Apache documentation&lt;/a&gt; or &lt;a href=&quot;http://www.google.com/search?q=apache+mod_rewrite&quot;&gt;elsewhere&lt;/a&gt; for help setting it up.' ) . '&lt;/p&gt;&lt;/div&gt;';
</span><span class="cx">         }
</span><span class="cx"> 
</span><del>-        if ( 'localhost' != $hostname ) : ?&gt;
</del><ins>+        if ( allow_subdomain_install() ) : ?&gt;
</ins><span class="cx">                 &lt;h3&gt;&lt;?php esc_html_e( 'Addresses of Sites in your Network' ); ?&gt;&lt;/h3&gt;
</span><span class="cx">                 &lt;p&gt;&lt;?php _e( 'Please choose whether you would like sites in your WordPress network to use sub-domains or sub-directories. &lt;strong&gt;You cannot change this later.&lt;/strong&gt;' ); ?&gt;&lt;/p&gt;
</span><span class="cx">                 &lt;p&gt;&lt;?php _e( &quot;You will need a wildcard DNS record if you're going to use the virtual host (sub-domain) functionality.&quot; ); ?&gt;&lt;/p&gt;
</span><span class="lines">@@ -175,6 +188,11 @@
</span><span class="cx">                                 &lt;th scope=&quot;row&quot;&gt;&lt;?php esc_html_e( 'Sub-directory Install' ); ?&gt;&lt;/th&gt;
</span><span class="cx">                                 &lt;td&gt;&lt;?php _e('Because you are using &lt;code&gt;localhost&lt;/code&gt;, the sites in your WordPress network must use sub-directories. Consider using &lt;code&gt;localhost.localdomain&lt;/code&gt; if you wish to use sub-domains.'); ?&gt;&lt;/td&gt;
</span><span class="cx">                         &lt;/tr&gt;
</span><ins>+                &lt;?php elseif ( !allow_subdomain_install() ) : ?&gt;
+                        &lt;tr&gt;
+                                &lt;th scope=&quot;row&quot;&gt;&lt;?php esc_html_e( 'Sub-directory Install' ); ?&gt;&lt;/th&gt;
+                                &lt;td&gt;&lt;?php _e('Because your install is in a directory, the sites in your WordPress network must use sub-directories.'); ?&gt;&lt;/td&gt;
+                        &lt;/tr&gt;
</ins><span class="cx">                 &lt;?php endif; ?&gt;
</span><span class="cx">                 &lt;?php if ( ! $is_www ) : ?&gt;
</span><span class="cx">                         &lt;tr&gt;
</span><span class="lines">@@ -217,7 +235,7 @@
</span><span class="cx">                 echo '&lt;div class=&quot;error&quot;&gt;' . $errors-&gt;get_error_message() . '&lt;/div&gt;';
</span><span class="cx"> 
</span><span class="cx">         if ( $_POST ) {
</span><del>-                $vhost = 'localhost' == $hostname ? false : (bool) $_POST['subdomain_install'];
</del><ins>+                $vhost = !allow_subdomain_install() ? false : (bool) $_POST['subdomain_install'];
</ins><span class="cx">         } else {
</span><span class="cx">                 if ( is_multisite() ) {
</span><span class="cx">                         $vhost = is_subdomain_install();
</span><span class="lines">@@ -326,7 +344,7 @@
</span><span class="cx">         // create network tables
</span><span class="cx">         install_network();
</span><span class="cx">         $hostname = get_clean_basedomain();
</span><del>-        $subdomain_install = 'localhost' == $hostname ? false : (bool) $_POST['subdomain_install'];
</del><ins>+        $subdomain_install = !allow_subdomain_install() ? false : (bool) $_POST['subdomain_install'];
</ins><span class="cx">         if ( ! network_domain_check() ) {
</span><span class="cx">                 $result = populate_network( 1, get_clean_basedomain(), sanitize_email( $_POST['email'] ), $_POST['sitename'], $base, $subdomain_install );
</span><span class="cx">                 if ( is_wp_error( $result ) ) {
</span></span></pre>
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