updated plugin ActivityPub version 2.6.1

wp-content/plugins/activitypub/integration/class-opengraph.php

@@ -0,0 +1,107 @@
+<?php
+namespace Activitypub\Integration;
+
+use Activitypub\Model\Blog;
+use Activitypub\Collection\Users;
+
+use function Activitypub\is_single_user;
+use function Activitypub\is_user_type_disabled;
+
+/**
+ * Compatibility with the OpenGraph plugin
+ *
+ * @see https://wordpress.org/plugins/opengraph/
+ * @see https://codeberg.org/fediverse/fep/src/branch/main/fep/XXXX/fep-XXXX.md
+ * @see https://github.com/mastodon/mastodon/pull/30398
+ */
+class Opengraph {
+	/**
+	 * Initialize the class, registering WordPress hooks
+	 */
+	public static function init() {
+		if ( ! function_exists( 'opengraph_metadata' ) ) {
+			\add_action( 'wp_head', array( self::class, 'add_meta_tags' ) );
+		}
+
+		\add_filter( 'opengraph_metadata', array( self::class, 'add_metadata' ) );
+	}
+
+	/**
+	 * Add the ActivityPub prefix to the OpenGraph prefixes.
+	 *
+	 * @param array $prefixes the current prefixes.
+	 *
+	 * @return array the updated prefixes.
+	 */
+	public static function add_prefixes( $prefixes ) {
+		// @todo discuss namespace
+		$prefixes['fediverse'] = 'https://codeberg.org/fediverse/fep/src/branch/main/fep/XXXX/fep-XXXX.md';
+
+		return $prefixes;
+	}
+
+	/**
+	 * Add the ActivityPub metadata to the OpenGraph metadata.
+	 *
+	 * @param array $metadata the current metadata.
+	 *
+	 * @return array the updated metadata.
+	 */
+	public static function add_metadata( $metadata ) {
+		// Always show Blog-User if the Blog is in single user mode
+		if ( is_single_user() ) {
+			$user = new Blog();
+
+			// add WebFinger resource
+			$metadata['fediverse:creator'] = $user->get_webfinger();
+
+			return $metadata;
+		}
+
+		if ( \is_author() ) {
+			// Use the Author of the Archive-Page
+			$user_id = \get_queried_object_id();
+		} elseif ( \is_singular() ) {
+			// Use the Author of the Post
+			$user_id = \get_post_field( 'post_author', \get_queried_object_id() );
+		} elseif ( ! is_user_type_disabled( 'blog' ) ) {
+			// Use the Blog-User for any other page, if the Blog-User is not disabled
+			$user_id = Users::BLOG_USER_ID;
+		} else {
+			// Do not add any metadata otherwise
+			return $metadata;
+		}
+
+		$user = Users::get_by_id( $user_id );
+
+		if ( ! $user || \is_wp_error( $user ) ) {
+			return $metadata;
+		}
+
+		// add WebFinger resource
+		$metadata['fediverse:creator'] = $user->get_webfinger();
+
+		return $metadata;
+	}
+
+	/**
+	 * Output Open Graph <meta> tags in the page header.
+	 */
+	public static function add_meta_tags() {
+		$metadata = apply_filters( 'opengraph_metadata', array() );
+		foreach ( $metadata as $key => $value ) {
+			if ( empty( $key ) || empty( $value ) ) {
+				continue;
+			}
+			$value = (array) $value;
+
+			foreach ( $value as $v ) {
+				printf(
+					'<meta property="%1$s" name="%1$s" content="%2$s" />' . PHP_EOL,
+					esc_attr( $key ),
+					esc_attr( $v )
+				);
+			}
+		}
+	}
+}