338 lines
11 KiB
PHP
338 lines
11 KiB
PHP
<?php
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/**
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* Mailer Class.
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*
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* @package ActivityPub
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*/
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namespace Activitypub;
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use Activitypub\Collection\Actors;
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/**
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* Mailer Class.
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*/
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class Mailer {
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/**
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* Initialize the Mailer.
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*/
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public static function init() {
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\add_filter( 'comment_notification_subject', array( self::class, 'comment_notification_subject' ), 10, 2 );
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\add_filter( 'comment_notification_text', array( self::class, 'comment_notification_text' ), 10, 2 );
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\add_action( 'activitypub_inbox_follow', array( self::class, 'new_follower' ), 10, 2 );
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\add_action( 'activitypub_inbox_create', array( self::class, 'direct_message' ), 10, 2 );
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\add_action( 'activitypub_inbox_create', array( self::class, 'mention' ), 10, 2 );
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}
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/**
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* Filter the subject line for Like and Announce notifications.
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*
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* @param string $subject The default subject line.
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* @param int|string $comment_id The comment ID.
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*
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* @return string The filtered subject line.
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*/
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public static function comment_notification_subject( $subject, $comment_id ) {
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$comment = \get_comment( $comment_id );
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if ( ! $comment ) {
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return $subject;
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}
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$type = \get_comment_meta( $comment->comment_ID, 'protocol', true );
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if ( 'activitypub' !== $type ) {
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return $subject;
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}
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$singular = Comment::get_comment_type_attr( $comment->comment_type, 'singular' );
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if ( ! $singular ) {
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return $subject;
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}
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$post = \get_post( $comment->comment_post_ID );
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/* translators: 1: Blog name, 2: Like or Repost, 3: Post title */
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return \sprintf( \esc_html__( '[%1$s] %2$s: %3$s', 'activitypub' ), \esc_html( get_option( 'blogname' ) ), \esc_html( $singular ), \esc_html( $post->post_title ) );
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}
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/**
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* Filter the notification text for Like and Announce notifications.
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*
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* @param string $message The default notification text.
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* @param int|string $comment_id The comment ID.
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*
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* @return string The filtered notification text.
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*/
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public static function comment_notification_text( $message, $comment_id ) {
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$comment = \get_comment( $comment_id );
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if ( ! $comment ) {
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return $message;
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}
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$type = \get_comment_meta( $comment->comment_ID, 'protocol', true );
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if ( 'activitypub' !== $type ) {
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return $message;
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}
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$comment_type = Comment::get_comment_type( $comment->comment_type );
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if ( ! $comment_type ) {
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return $message;
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}
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$post = \get_post( $comment->comment_post_ID );
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$comment_author_domain = \gethostbyaddr( $comment->comment_author_IP );
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/* translators: 1: Comment type, 2: Post title */
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$notify_message = \sprintf( html_entity_decode( esc_html__( 'New %1$s on your post “%2$s”.', 'activitypub' ) ), \esc_html( $comment_type['singular'] ), \esc_html( $post->post_title ) ) . "\r\n\r\n";
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/* translators: 1: Website name, 2: Website IP address, 3: Website hostname. */
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$notify_message .= \sprintf( \esc_html__( 'From: %1$s (IP address: %2$s, %3$s)', 'activitypub' ), \esc_html( $comment->comment_author ), \esc_html( $comment->comment_author_IP ), \esc_html( $comment_author_domain ) ) . "\r\n";
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/* translators: Reaction author URL. */
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$notify_message .= \sprintf( \esc_html__( 'URL: %s', 'activitypub' ), \esc_url( $comment->comment_author_url ) ) . "\r\n\r\n";
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/* translators: Comment type label */
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$notify_message .= \sprintf( \esc_html__( 'You can see all %s on this post here:', 'activitypub' ), \esc_html( $comment_type['label'] ) ) . "\r\n";
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$notify_message .= \get_permalink( $comment->comment_post_ID ) . '#' . \esc_attr( $comment_type['type'] ) . "\r\n\r\n";
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return $notify_message;
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}
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/**
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* Send a notification email for every new follower.
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*
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* @param array $activity The activity object.
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* @param int $user_id The id of the local blog-user.
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*/
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public static function new_follower( $activity, $user_id ) {
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if ( $user_id > Actors::BLOG_USER_ID ) {
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if ( ! \get_user_option( 'activitypub_mailer_new_follower', $user_id ) ) {
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return;
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}
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$email = \get_userdata( $user_id )->user_email;
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$admin_url = '/users.php?page=activitypub-followers-list';
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} else {
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if ( '1' !== \get_option( 'activitypub_blog_user_mailer_new_follower', '1' ) ) {
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return;
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}
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$email = \get_option( 'admin_email' );
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$admin_url = '/options-general.php?page=activitypub&tab=followers';
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}
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$actor = get_remote_metadata_by_actor( $activity['actor'] );
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if ( ! $actor || \is_wp_error( $actor ) ) {
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return;
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}
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if ( empty( $actor['webfinger'] ) ) {
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$actor['webfinger'] = '@' . ( $actor['preferredUsername'] ?? $actor['name'] ) . '@' . \wp_parse_url( $actor['url'], PHP_URL_HOST );
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}
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$template_args = array_merge(
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$actor,
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array(
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'admin_url' => $admin_url,
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'user_id' => $user_id,
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'stats' => array(
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'outbox' => null,
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'followers' => null,
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'following' => null,
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),
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)
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);
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foreach ( $template_args['stats'] as $field => $value ) {
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if ( empty( $actor[ $field ] ) ) {
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continue;
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}
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$result = Http::get( $actor[ $field ], true );
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if ( 200 === \wp_remote_retrieve_response_code( $result ) ) {
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$body = \json_decode( \wp_remote_retrieve_body( $result ), true );
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if ( isset( $body['totalItems'] ) ) {
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$template_args['stats'][ $field ] = $body['totalItems'];
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}
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}
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}
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/* translators: 1: Blog name, 2: Follower name */
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$subject = \sprintf( \__( '[%1$s] New Follower: %2$s', 'activitypub' ), \get_option( 'blogname' ), $actor['name'] );
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\ob_start();
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\load_template( ACTIVITYPUB_PLUGIN_DIR . 'templates/emails/new-follower.php', false, $template_args );
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$html_message = \ob_get_clean();
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$alt_function = function ( $mailer ) use ( $actor, $admin_url ) {
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/* translators: 1: Follower name */
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$message = \sprintf( \__( 'New Follower: %1$s.', 'activitypub' ), $actor['name'] ) . "\r\n\r\n";
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/* translators: Follower URL */
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$message .= \sprintf( \__( 'URL: %s', 'activitypub' ), \esc_url( $actor['url'] ) ) . "\r\n\r\n";
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$message .= \__( 'You can see all followers here:', 'activitypub' ) . "\r\n";
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$message .= \esc_url( \admin_url( $admin_url ) ) . "\r\n\r\n";
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$mailer->{'AltBody'} = $message;
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};
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\add_action( 'phpmailer_init', $alt_function );
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\wp_mail( $email, $subject, $html_message, array( 'Content-type: text/html' ) );
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\remove_action( 'phpmailer_init', $alt_function );
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}
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/**
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* Send a direct message.
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*
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* @param array $activity The activity object.
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* @param int $user_id The id of the local blog-user.
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*/
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public static function direct_message( $activity, $user_id ) {
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if (
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is_activity_public( $activity ) ||
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// Only accept messages that have the user in the "to" field.
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empty( $activity['to'] ) ||
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! in_array( Actors::get_by_id( $user_id )->get_id(), (array) $activity['to'], true )
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) {
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return;
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}
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if ( $user_id > Actors::BLOG_USER_ID ) {
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if ( ! \get_user_option( 'activitypub_mailer_new_dm', $user_id ) ) {
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return;
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}
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$email = \get_userdata( $user_id )->user_email;
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} else {
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if ( '1' !== \get_option( 'activitypub_blog_user_mailer_new_dm', '1' ) ) {
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return;
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}
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$email = \get_option( 'admin_email' );
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}
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$actor = get_remote_metadata_by_actor( $activity['actor'] );
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if ( ! $actor || \is_wp_error( $actor ) || empty( $activity['object']['content'] ) ) {
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return;
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}
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if ( empty( $actor['webfinger'] ) ) {
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$actor['webfinger'] = '@' . ( $actor['preferredUsername'] ?? $actor['name'] ) . '@' . \wp_parse_url( $actor['url'], PHP_URL_HOST );
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}
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$template_args = array(
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'activity' => $activity,
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'actor' => $actor,
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'user_id' => $user_id,
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);
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/* translators: 1: Blog name, 2 Actor name */
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$subject = \sprintf( \esc_html__( '[%1$s] Direct Message from: %2$s', 'activitypub' ), \esc_html( \get_option( 'blogname' ) ), \esc_html( $actor['name'] ) );
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\ob_start();
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\load_template( ACTIVITYPUB_PLUGIN_DIR . 'templates/emails/new-dm.php', false, $template_args );
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$html_message = \ob_get_clean();
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$alt_function = function ( $mailer ) use ( $actor, $activity ) {
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$content = \html_entity_decode(
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\wp_strip_all_tags(
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str_replace( '</p>', PHP_EOL . PHP_EOL, $activity['object']['content'] )
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),
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ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401
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);
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/* translators: Actor name */
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$message = \sprintf( \esc_html__( 'New Direct Message: %s', 'activitypub' ), $content ) . "\r\n\r\n";
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/* translators: Actor name */
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$message .= \sprintf( \esc_html__( 'From: %s', 'activitypub' ), \esc_html( $actor['name'] ) ) . "\r\n";
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/* translators: Message URL */
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$message .= \sprintf( \esc_html__( 'URL: %s', 'activitypub' ), \esc_url( $activity['object']['id'] ) ) . "\r\n\r\n";
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$mailer->{'AltBody'} = $message;
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};
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\add_action( 'phpmailer_init', $alt_function );
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\wp_mail( $email, $subject, $html_message, array( 'Content-type: text/html' ) );
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\remove_action( 'phpmailer_init', $alt_function );
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}
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/**
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* Send a mention notification.
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*
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* @param array $activity The activity object.
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* @param int $user_id The id of the local blog-user.
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*/
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public static function mention( $activity, $user_id ) {
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if (
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// Only accept messages that have the user in the "cc" field.
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empty( $activity['cc'] ) ||
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! in_array( Actors::get_by_id( $user_id )->get_id(), (array) $activity['cc'], true )
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) {
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return;
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}
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if ( $user_id > Actors::BLOG_USER_ID ) {
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if ( ! \get_user_option( 'activitypub_mailer_new_mention', $user_id ) ) {
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return;
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}
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$email = \get_userdata( $user_id )->user_email;
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} else {
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if ( '1' !== \get_option( 'activitypub_blog_user_mailer_new_mention', '1' ) ) {
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return;
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}
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$email = \get_option( 'admin_email' );
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}
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$actor = get_remote_metadata_by_actor( $activity['actor'] );
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if ( \is_wp_error( $actor ) ) {
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return;
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}
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if ( empty( $actor['webfinger'] ) ) {
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$actor['webfinger'] = '@' . ( $actor['preferredUsername'] ?? $actor['name'] ) . '@' . \wp_parse_url( $actor['url'], PHP_URL_HOST );
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}
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$template_args = array(
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'activity' => $activity,
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'actor' => $actor,
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'user_id' => $user_id,
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);
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/* translators: 1: Blog name, 2 Actor name */
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$subject = \sprintf( \esc_html__( '[%1$s] Mention from: %2$s', 'activitypub' ), \esc_html( \get_option( 'blogname' ) ), \esc_html( $actor['name'] ) );
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\ob_start();
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\load_template( ACTIVITYPUB_PLUGIN_DIR . 'templates/emails/new-mention.php', false, $template_args );
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$html_message = \ob_get_clean();
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$alt_function = function ( $mailer ) use ( $actor, $activity ) {
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$content = \html_entity_decode(
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\wp_strip_all_tags(
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str_replace( '</p>', PHP_EOL . PHP_EOL, $activity['object']['content'] )
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),
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ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401
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);
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/* translators: Message content */
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$message = \sprintf( \esc_html__( 'New Mention: %s', 'activitypub' ), $content ) . "\r\n\r\n";
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/* translators: Actor name */
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$message .= \sprintf( \esc_html__( 'From: %s', 'activitypub' ), \esc_html( $actor['name'] ) ) . "\r\n";
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/* translators: Message URL */
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$message .= \sprintf( \esc_html__( 'URL: %s', 'activitypub' ), \esc_url( $activity['object']['id'] ) ) . "\r\n\r\n";
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$mailer->{'AltBody'} = $message;
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};
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\add_action( 'phpmailer_init', $alt_function );
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\wp_mail( $email, $subject, $html_message, array( 'Content-type: text/html' ) );
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\remove_action( 'phpmailer_init', $alt_function );
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}
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}
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