activitypub / includes / class-mailer.php

class-mailer.php in ActivityPub 5.7.0, at includes/class-mailer.php

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1	<?php
2	/**
3	* Mailer Class.
4	*
5	* @package ActivityPub
6	*/
7
8	namespace Activitypub;
9
10	use Activitypub\Collection\Actors;
11
12	/**
13	* Mailer Class.
14	*/
15	class Mailer {
16	/**
17	* Initialize the Mailer.
18	*/
19	public static function init() {
20	\add_filter( 'comment_notification_subject', array( self::class, 'comment_notification_subject' ), 10, 2 );
21	\add_filter( 'comment_notification_text', array( self::class, 'comment_notification_text' ), 10, 2 );
22
23	// New follower notification.
24	if ( '1' === \get_option( 'activitypub_mailer_new_follower', '0' ) ) {
25	\add_action( 'activitypub_notification_follow', array( self::class, 'new_follower' ) );
26	}
27
28	// Direct message notification.
29	if ( '1' === \get_option( 'activitypub_mailer_new_dm', '0' ) ) {
30	\add_action( 'activitypub_inbox_create', array( self::class, 'direct_message' ), 10, 2 );
31	}
32	}
33
34	/**
35	* Filter the subject line for Like and Announce notifications.
36	*
37	* @param string $subject The default subject line.
38	* @param int\|string $comment_id The comment ID.
39	*
40	* @return string The filtered subject line.
41	*/
42	public static function comment_notification_subject( $subject, $comment_id ) {
43	$comment = \get_comment( $comment_id );
44
45	if ( ! $comment ) {
46	return $subject;
47	}
48
49	$type = \get_comment_meta( $comment->comment_ID, 'protocol', true );
50
51	if ( 'activitypub' !== $type ) {
52	return $subject;
53	}
54
55	$singular = Comment::get_comment_type_attr( $comment->comment_type, 'singular' );
56
57	if ( ! $singular ) {
58	return $subject;
59	}
60
61	$post = \get_post( $comment->comment_post_ID );
62
63	/* translators: 1: Blog name, 2: Like or Repost, 3: Post title */
64	return \sprintf( \esc_html__( '[%1$s] %2$s: %3$s', 'activitypub' ), \esc_html( get_option( 'blogname' ) ), \esc_html( $singular ), \esc_html( $post->post_title ) );
65	}
66
67	/**
68	* Filter the notification text for Like and Announce notifications.
69	*
70	* @param string $message The default notification text.
71	* @param int\|string $comment_id The comment ID.
72	*
73	* @return string The filtered notification text.
74	*/
75	public static function comment_notification_text( $message, $comment_id ) {
76	$comment = \get_comment( $comment_id );
77
78	if ( ! $comment ) {
79	return $message;
80	}
81
82	$type = \get_comment_meta( $comment->comment_ID, 'protocol', true );
83
84	if ( 'activitypub' !== $type ) {
85	return $message;
86	}
87
88	$comment_type = Comment::get_comment_type( $comment->comment_type );
89
90	if ( ! $comment_type ) {
91	return $message;
92	}
93
94	$post = \get_post( $comment->comment_post_ID );
95	$comment_author_domain = \gethostbyaddr( $comment->comment_author_IP );
96
97	/* translators: 1: Comment type, 2: Post title */
98	$notify_message = \sprintf( html_entity_decode( esc_html__( 'New %1$s on your post “%2$s”.', 'activitypub' ) ), \esc_html( $comment_type['singular'] ), \esc_html( $post->post_title ) ) . "\r\n\r\n";
99	/* translators: 1: Website name, 2: Website IP address, 3: Website hostname. */
100	$notify_message .= \sprintf( \esc_html__( 'From: %1$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";
101	/* translators: Reaction author URL. */
102	$notify_message .= \sprintf( \esc_html__( 'URL: %s', 'activitypub' ), \esc_url( $comment->comment_author_url ) ) . "\r\n\r\n";
103	/* translators: Comment type label */
104	$notify_message .= \sprintf( \esc_html__( 'You can see all %s on this post here:', 'activitypub' ), \esc_html( $comment_type['label'] ) ) . "\r\n";
105	$notify_message .= \get_permalink( $comment->comment_post_ID ) . '#' . \esc_attr( $comment_type['type'] ) . "\r\n\r\n";
106
107	return $notify_message;
108	}
109
110	/**
111	* Send a notification email for every new follower.
112	*
113	* @param Notification $notification The notification object.
114	*/
115	public static function new_follower( $notification ) {
116	$actor = get_remote_metadata_by_actor( $notification->actor );
117
118	if ( ! $actor \|\| \is_wp_error( $actor ) ) {
119	return;
120	}
121
122	$email = \get_option( 'admin_email' );
123	$admin_url = '/options-general.php?page=activitypub&tab=followers';
124
125	if ( $notification->target > Actors::BLOG_USER_ID ) {
126	$user = \get_user_by( 'id', $notification->target );
127
128	if ( ! $user ) {
129	return;
130	}
131
132	$email = $user->user_email;
133	$admin_url = '/users.php?page=activitypub-followers-list';
134	}
135
136	$template_args = array_merge(
137	$actor,
138	array(
139	'admin_url' => $admin_url,
140	'target' => $notification->target,
141	)
142	);
143
144	/* translators: 1: Blog name, 2: Follower name */
145	$subject = \sprintf( \__( '[%1$s] New Follower: %2$s', 'activitypub' ), get_option( 'blogname' ), $actor['name'] );
146
147	\ob_start();
148	\load_template( ACTIVITYPUB_PLUGIN_DIR . 'templates/new-follower-email.php', false, $template_args );
149	$html_message = \ob_get_clean();
150
151	$alt_function = function ( $mailer ) use ( $actor, $admin_url ) {
152	/* translators: 1: Follower name */
153	$message = \sprintf( \__( 'New Follower: %1$s.', 'activitypub' ), $actor['name'] ) . "\r\n\r\n";
154	/* translators: Follower URL */
155	$message .= \sprintf( \__( 'URL: %s', 'activitypub' ), \esc_url( $actor['url'] ) ) . "\r\n\r\n";
156	$message .= \__( 'You can see all followers here:', 'activitypub' ) . "\r\n";
157	$message .= \esc_url( \admin_url( $admin_url ) ) . "\r\n\r\n";
158	$mailer->{'AltBody'} = $message;
159	};
160	\add_action( 'phpmailer_init', $alt_function );
161
162	\wp_mail( $email, $subject, $html_message, array( 'Content-type: text/html' ) );
163
164	\remove_action( 'phpmailer_init', $alt_function );
165	}
166
167	/**
168	* Send a direct message.
169	*
170	* @param array $activity The activity object.
171	* @param int $user_id The id of the local blog-user.
172	*/
173	public static function direct_message( $activity, $user_id ) {
174	if (
175	is_activity_public( $activity ) \|\|
176	// Only accept messages that have the user in the "to" field.
177	empty( $activity['to'] ) \|\|
178	! in_array( Actors::get_by_id( $user_id )->get_id(), (array) $activity['to'], true )
179	) {
180	return;
181	}
182
183	$actor = get_remote_metadata_by_actor( $activity['actor'] );
184
185	if ( ! $actor \|\| \is_wp_error( $actor ) \|\| empty( $activity['object']['content'] ) ) {
186	return;
187	}
188
189	$email = \get_option( 'admin_email' );
190
191	if ( (int) $user_id > Actors::BLOG_USER_ID ) {
192	$user = \get_user_by( 'id', $user_id );
193
194	if ( ! $user ) {
195	return;
196	}
197
198	$email = $user->user_email;
199	}
200
201	$content = \html_entity_decode(
202	\wp_strip_all_tags(
203	str_replace( '</p>', PHP_EOL . PHP_EOL, $activity['object']['content'] )
204	),
205	ENT_QUOTES \| ENT_SUBSTITUTE \| ENT_HTML401
206	);
207
208	/* translators: 1: Blog name, 2 Actor name */
209	$subject = \sprintf( \esc_html__( '[%1$s] Direct Message from: %2$s', 'activitypub' ), \esc_html( get_option( 'blogname' ) ), \esc_html( $actor['name'] ) );
210	/* translators: 1: Blog name, 2: Actor name */
211	$message = \sprintf( \esc_html__( 'New Direct Message: %2$s', 'activitypub' ), \esc_html( get_option( 'blogname' ) ), $content ) . "\r\n\r\n";
212	/* translators: Actor name */
213	$message .= \sprintf( \esc_html__( 'From: %s', 'activitypub' ), \esc_html( $actor['name'] ) ) . "\r\n";
214	/* translators: Actor URL */
215	$message .= \sprintf( \esc_html__( 'URL: %s', 'activitypub' ), \esc_url( $actor['url'] ) ) . "\r\n\r\n";
216
217	\wp_mail( $email, $subject, $message );
218	}
219	}
220