'as:manuallyApprovesFollowers', 'PropertyValue' => 'schema:PropertyValue', 'schema' => 'http://schema.org#', 'value' => 'schema:value', ), ); return \apply_filters( 'activitypub_json_context', $context ); } function safe_remote_post( $url, $body, $user_id ) { $date = \gmdate( 'D, d M Y H:i:s T' ); $signature = \Activitypub\Signature::generate_signature( $user_id, $url, $date ); $wp_version = \get_bloginfo( 'version' ); $user_agent = \apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . \get_bloginfo( 'url' ) ); $args = array( 'timeout' => 100, 'limit_response_size' => 1048576, 'redirection' => 3, 'user-agent' => "$user_agent; ActivityPub", 'headers' => array( 'Accept' => 'application/activity+json', 'Content-Type' => 'application/activity+json', 'Signature' => $signature, 'Date' => $date, ), 'body' => $body, ); $response = \wp_safe_remote_post( $url, $args ); \do_action( 'activitypub_safe_remote_post_response', $response, $url, $body, $user_id ); return $response; } function safe_remote_get( $url, $user_id ) { $date = \gmdate( 'D, d M Y H:i:s T' ); $signature = \Activitypub\Signature::generate_signature( $user_id, $url, $date ); $wp_version = \get_bloginfo( 'version' ); $user_agent = \apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . \get_bloginfo( 'url' ) ); $args = array( 'timeout' => 100, 'limit_response_size' => 1048576, 'redirection' => 3, 'user-agent' => "$user_agent; ActivityPub", 'headers' => array( 'Accept' => 'application/activity+json', 'Content-Type' => 'application/activity+json', 'Signature' => $signature, 'Date' => $date, ), ); $response = \wp_safe_remote_get( $url, $args ); \do_action( 'activitypub_safe_remote_get_response', $response, $url, $user_id ); return $response; } /** * Returns a users WebFinger "resource" * * @param int $user_id * * @return string The user-resource */ function get_webfinger_resource( $user_id ) { // use WebFinger plugin if installed if ( \function_exists( '\get_webfinger_resource' ) ) { return \get_webfinger_resource( $user_id, false ); } $user = \get_user_by( 'id', $user_id ); return $user->user_login . '@' . \wp_parse_url( \home_url(), \PHP_URL_HOST ); } /** * [get_metadata_by_actor description] * * @param sting $actor * * @return array */ function get_remote_metadata_by_actor( $actor ) { $metadata = \get_transient( 'activitypub_' . $actor ); if ( $metadata ) { return $metadata; } if ( ! \wp_http_validate_url( $actor ) ) { return new \WP_Error( 'activitypub_no_valid_actor_url', \__( 'The "actor" is no valid URL', 'activitypub' ), $actor ); } $user = \get_users( array ( 'number' => 1, 'who' => 'authors', 'fields' => 'ID', ) ); // we just need any user to generate a request signature $user_id = \reset( $user ); $response = \Activitypub\safe_remote_get( $actor, $user_id ); if ( \is_wp_error( $response ) ) { return $response; } $metadata = \wp_remote_retrieve_body( $response ); $metadata = \json_decode( $metadata, true ); if ( ! $metadata ) { return new \WP_Error( 'activitypub_invalid_json', \__( 'No valid JSON data', 'activitypub' ), $actor ); } \set_transient( 'activitypub_' . $actor, $metadata, WEEK_IN_SECONDS ); return $metadata; } /** * [get_inbox_by_actor description] * @param [type] $actor [description] * @return [type] [description] */ function get_inbox_by_actor( $actor ) { $metadata = \Activitypub\get_remote_metadata_by_actor( $actor ); if ( \is_wp_error( $metadata ) ) { return $metadata; } if ( isset( $metadata['endpoints'] ) && isset( $metadata['endpoints']['sharedInbox'] ) ) { return $metadata['endpoints']['sharedInbox']; } if ( \array_key_exists( 'inbox', $metadata ) ) { return $metadata['inbox']; } return new \WP_Error( 'activitypub_no_inbox', __( 'No "Inbox" found', 'activitypub' ), $metadata ); } /** * [get_inbox_by_actor description] * @param [type] $actor [description] * @return [type] [description] */ function get_publickey_by_actor( $actor, $key_id ) { $metadata = \Activitypub\get_remote_metadata_by_actor( $actor ); if ( \is_wp_error( $metadata ) ) { return $metadata; } if ( isset( $metadata['publicKey'] ) && isset( $metadata['publicKey']['id'] ) && isset( $metadata['publicKey']['owner'] ) && isset( $metadata['publicKey']['publicKeyPem'] ) && $key_id === $metadata['publicKey']['id'] && $actor === $metadata['publicKey']['owner'] ) { return $metadata['publicKey']['publicKeyPem']; } return new \WP_Error( 'activitypub_no_public_key', \__( 'No "Public-Key" found', 'activitypub' ), $metadata ); } function get_follower_inboxes( $user_id ) { $followers = \Activitypub\Peer\Followers::get_followers( $user_id ); $inboxes = array(); foreach ( $followers as $follower ) { $inbox = \Activitypub\get_inbox_by_actor( $follower ); if ( ! $inbox || \is_wp_error( $inbox ) ) { continue; } // init array if empty if ( ! isset( $inboxes[ $inbox ] ) ) { $inboxes[ $inbox ] = array(); } $inboxes[ $inbox ][] = $follower; } return $inboxes; } function get_identifier_settings( $user_id ) { ?>

or

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; } /** * Get the blacklist from the WordPress options table * * @return array the list of blacklisted hosts * * @uses apply_filters() Calls 'activitypub_blacklist' filter */ function get_blacklist() { $blacklist = \get_option( 'activitypub_blacklist' ); $blacklist_hosts = \explode( \PHP_EOL, $blacklist ); // if no values have been set, revert to the defaults if ( ! $blacklist || ! $blacklist_hosts || ! \is_array( $blacklist_hosts ) ) { $blacklist_hosts = array(); } // clean out any blank values foreach ( $blacklist_hosts as $key => $value ) { if ( empty( $value ) ) { unset( $blacklist_hosts[ $key ] ); } else { $blacklist_hosts[ $key ] = \trim( $blacklist_hosts[ $key ] ); } } return \apply_filters( 'activitypub_blacklist', $blacklist_hosts ); } /** * Check if an URL is blacklisted * * @param string $url an URL to check * * @return boolean */ function is_blacklisted( $url ) { foreach ( \ActivityPub\get_blacklist() as $blacklisted_host ) { if ( \strpos( $url, $blacklisted_host ) !== false ) { return true; } } return false; }