Add a ACTIVITYPUB_DISABLE_REWRITES constant (#490)

Author: mattwiebe

activitypub.php

@@ -31,6 +31,7 @@ function define_constants() {
 	\defined( 'ACTIVITYPUB_USERNAME_REGEXP' ) || \define( 'ACTIVITYPUB_USERNAME_REGEXP', '(?:([A-Za-z0-9_-]+)@((?:[A-Za-z0-9_-]+\.)+[A-Za-z]+))' );
 	\defined( 'ACTIVITYPUB_CUSTOM_POST_CONTENT' ) || \define( 'ACTIVITYPUB_CUSTOM_POST_CONTENT', "<strong>[ap_title]</strong>\n\n[ap_content]\n\n[ap_hashtags]\n\n[ap_shortlink]" );
 	\defined( 'ACTIVITYPUB_AUTHORIZED_FETCH' ) || \define( 'ACTIVITYPUB_AUTHORIZED_FETCH', false );
+	\defined( 'ACTIVITYPUB_DISABLE_REWRITES' ) || \define( 'ACTIVITYPUB_DISABLE_REWRITES', false );
 
 	\define( 'ACTIVITYPUB_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
 	\define( 'ACTIVITYPUB_PLUGIN_BASENAME', plugin_basename( __FILE__ ) );

includes/class-activitypub.php

@@ -227,6 +227,12 @@ public static function untrash_post( $post_id ) {
 	 * Add rewrite rules
 	 */
 	public static function add_rewrite_rules() {
+		// If another system needs to take precedence over the ActivityPub rewrite rules,
+		// they can define their own and will manually call the appropriate functions as required.
+		if ( ACTIVITYPUB_DISABLE_REWRITES ) {
+			return;
+		}
+
 		if ( ! \class_exists( 'Webfinger' ) ) {
 			\add_rewrite_rule(
 				'^.well-known/webfinger',