updated plugin ActivityPub version 0.12.0

wp-content/plugins/activitypub/includes/peer/class-followers.php

@@ -21,7 +21,7 @@ class Followers {
 				isset( $follower['type'] ) &&
 				'Person' === $follower['type'] &&
 				isset( $follower['id'] ) &&
-				false !== \filter_var( $follower['id'], FILTER_VALIDATE_URL )
+				false !== \filter_var( $follower['id'], \FILTER_VALIDATE_URL )
 			) {
 				$followers[ $key ] = $follower['id'];
 			}
@@ -45,7 +45,7 @@ class Followers {
 				isset( $actor['type'] ) &&
 				'Person' === $actor['type'] &&
 				isset( $actor['id'] ) &&
-				false !== \filter_var( $actor['id'], FILTER_VALIDATE_URL )
+				false !== \filter_var( $actor['id'], \FILTER_VALIDATE_URL )
 			) {
 				$actor = $actor['id'];
 			}

wp-content/plugins/activitypub/includes/peer/class-users.php

@@ -0,0 +1,67 @@
+<?php
+namespace Activitypub\Peer;
+
+/**
+ * ActivityPub Users DB-Class
+ *
+ * @author Matthias Pfefferle
+ */
+class Users {
+
+	/**
+	 * Undocumented function
+	 *
+	 * @return void
+	 */
+	public static function get_user_by_various( $data ) {
+
+	}
+
+	/**
+	 * Examine a url and try to determine the author ID it represents.
+	 *
+	 * Checks are supposedly from the hosted site blog.
+	 *
+	 * @param string $url Permalink to check.
+	 *
+	 * @return int User ID, or 0 on failure.
+	 */
+	public static function url_to_authorid( $url ) {
+		global $wp_rewrite;
+
+		// check if url hase the same host
+		if ( \wp_parse_url( \site_url(), \PHP_URL_HOST ) !== \wp_parse_url( $url, \PHP_URL_HOST ) ) {
+			return 0;
+		}
+
+		// first, check to see if there is a 'author=N' to match against
+		if ( \preg_match( '/[?&]author=(\d+)/i', $url, $values ) ) {
+			$id = \absint( $values[1] );
+			if ( $id ) {
+				return $id;
+			}
+		}
+
+		// check to see if we are using rewrite rules
+		$rewrite = $wp_rewrite->wp_rewrite_rules();
+
+		// not using rewrite rules, and 'author=N' method failed, so we're out of options
+		if ( empty( $rewrite ) ) {
+			return 0;
+		}
+
+		// generate rewrite rule for the author url
+		$author_rewrite = $wp_rewrite->get_author_permastruct();
+		$author_regexp = \str_replace( '%author%', '', $author_rewrite );
+
+		// match the rewrite rule with the passed url
+		if ( \preg_match( '/https?:\/\/(.+)' . \preg_quote( $author_regexp, '/' ) . '([^\/]+)/i', $url, $match ) ) {
+			$user = \get_user_by( 'slug', $match[2] );
+			if ( $user ) {
+				return $user->ID;
+			}
+		}
+
+		return 0;
+	}
+}