Changeset 31089

Timestamp:

01/08/2015 06:46:55 AM (10 years ago)

Author:

dd32

Message:

Enable Pretty Permalinks for new sites during install if the server supports it.
See #6481, Props valendesigns, DrewAPicture & ericlewis

File:

• trunk/src/wp-admin/includes/upgrade.php (modified) (2 diffs)

trunk/src/wp-admin/includes/upgrade.php

@@ -87 +87 @@
 
     wp_install_defaults($user_id);
+
+    wp_install_maybe_enable_pretty_permalinks();
 
     flush_rewrite_rules();
@@ -258 +260 @@
             $wpdb->delete( $wpdb->usermeta, array( 'user_id' => $user_id , 'meta_key' => $wpdb->base_prefix.'1_capabilities' ) );
     }
+}
+endif;
+
+if ( ! function_exists( 'wp_install_maybe_enable_pretty_permalinks' ) ) :
+/**
+ * Enable pretty permalinks if available.
+ *
+ * This function will enable pretty permalinks if it can verify they work.
+ * If all pretty permalinks formats fail to work, WordPress will fall back
+ * to ugly permalinks by setting an empty permalink structure.
+ *
+ * @since 4.2.0
+ *
+ * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
+ */
+function wp_install_maybe_enable_pretty_permalinks() {
+    global $wp_rewrite;
+
+    // Bail if we alredy have permalinks enabled (Multisite)
+    if ( get_option( 'permalink_structure' ) ) {
+        return;
+    }
+
+    /*
+     * The Permalink structures which WordPress should attempt to use.
+     * The first is designed for mod_rewrite or nginx rewriting.
+     * The second is PATHINFO based permalinks offered under configurations 
+     * without rewrites enabled.
+     */
+    $permalink_structures = array(
+        '/%year%/%monthnum%/%day%/%postname%/',
+        '/index.php/%year%/%monthnum%/%day%/%postname%/'
+    );
+
+    foreach ( (array) $permalink_structures as $permalink_structure ) {
+        // Set the desired Permalink structure to try
+        $wp_rewrite->set_permalink_structure( $permalink_structure );
+
+        /*
+         * Flush rules with the hard option to force refresh of the web-server's
+         * rewrite config file (e.g. .htaccess or web.config).
+         */
+        $wp_rewrite->flush_rules( true );
+
+        // Test against a real WordPress Post, or if none were created, a Page URI
+        $test_url = get_permalink( 1 );
+        if ( ! $test_url ) {
+            $test_url = home_url( '/wordpress-check-for-rewrites/' );
+        }
+
+        /*
+         * Send a HEAD request to a random page on the site, and check whether
+         * the 'x-pingback' header is returned as expected.
+         */
+        $response          = wp_remote_get( $test_url, array( 'timeout' => 5 ) );
+        $x_pingback_header = wp_remote_retrieve_header( $response, 'x-pingback' );
+        $pretty_permalinks = $x_pingback_header && $x_pingback_header === get_bloginfo( 'pingback_url' );
+
+        if ( $pretty_permalinks ) {
+            return true;
+        }
+    }
+
+    /*
+     * If it makes it this far, Pretty Permalinks failed to activate.
+     * Reset and allow the user to select it themselves.
+     */
+    $wp_rewrite->set_permalink_structure( '' );
+    $wp_rewrite->flush_rules( true );
 }
 endif;