fixes #32 and fixes #51

mercator.php

@@ -290,6 +290,8 @@ function register_mapped_filters() {
 	$GLOBALS['mercator_current_mapping'] = $mapping;
 	add_filter( 'site_url', __NAMESPACE__ . '\\mangle_url', -10, 4 );
 	add_filter( 'home_url', __NAMESPACE__ . '\\mangle_url', -10, 4 );
+	add_filter( 'content_url', __NAMESPACE__ . '\\mangle_content_url', -10, 2 );
+	add_filter( 'lostpassword_url', __NAMESPACE__ . '\\mangle_content_url', -10, 2 );
 
 	// If on network site, also filter network urls
 	if ( is_main_site() ) {
@@ -324,3 +326,29 @@ function mangle_url( $url, $path, $orig_scheme, $site_id = 0 ) {
 
 	return $mangled;
 }
+
+/**
+ * Mangle the content URL to give our mapped domain
+ *
+ * @param string $url The complete home URL including scheme and path.
+ * @param string $path Path relative to the home URL. Blank string if no path is specified.
+ * @return string Mangled Content URL
+ */
+function mangle_content_url( $url, $path) {
+	//get site ID for use with getting mapped domain name
+	$site_id = get_current_blog_id();
+	//pull in site aliases
+	$current_mapping = $GLOBALS['mercator_current_mapping'];
+	//make sure the current domain is a mapped domain, else return the original url
+	if ( empty( $current_mapping ) || $site_id !== (int) $current_mapping->get_site_id() ) {
+		return $url;
+	}
+
+	// Replace the domain with mapped domain within the url
+	$domain = parse_url( $url, PHP_URL_HOST );
+	$regex = '#^(\w+://)' . preg_quote( $domain, '#' ) . '#i';
+	$mangled = preg_replace( $regex, '${1}' . $current_mapping->get_domain(), $url );
+
+	//return filtered content url
+	return $mangled;
+}

sunrise-sample.php

@@ -0,0 +1,7 @@
+<?php
+// Default mu-plugins directory if you haven't set it
+defined( 'WPMU_PLUGIN_DIR' ) or define( 'WPMU_PLUGIN_DIR', WP_CONTENT_DIR . '/mu-plugins' );
+//uncomment the two lines below to disable SSO (single sign on)
+//add_filter( 'mercator.sso.enabled', '__return_false' );
+//add_action( 'muplugins_loaded', 'Mercator\\SSO\\initialize_cookie_domain' );
+require WPMU_PLUGIN_DIR . '/mercator/mercator.php';