activitypub / includes / handler / class-create.php

class-create.php in ActivityPub 4.3.0, at includes/handler/class-create.php

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1	<?php
2	/**
3	* Create handler file.
4	*
5	* @package Activitypub
6	*/
7
8	namespace Activitypub\Handler;
9
10	use Activitypub\Collection\Interactions;
11
12	use function Activitypub\is_self_ping;
13	use function Activitypub\is_activity_public;
14	use function Activitypub\object_id_to_comment;
15
16	/**
17	* Handle Create requests.
18	*/
19	class Create {
20	/**
21	* Initialize the class, registering WordPress hooks.
22	*/
23	public static function init() {
24	\add_action(
25	'activitypub_inbox_create',
26	array( self::class, 'handle_create' ),
27	10,
28	3
29	);
30
31	\add_filter(
32	'activitypub_validate_object',
33	array( self::class, 'validate_object' ),
34	10,
35	3
36	);
37	}
38
39	/**
40	* Handles "Create" requests.
41	*
42	* @param array $activity The activity-object.
43	* @param int $user_id The id of the local blog-user.
44	* @param \Activitypub\Activity\Activity $activity_object Optional. The activity object. Default null.
45	*/
46	public static function handle_create( $activity, $user_id, $activity_object = null ) {
47	// Check if Activity is public or not.
48	if ( ! is_activity_public( $activity ) ) {
49	// @todo maybe send email.
50	return;
51	}
52
53	$check_dupe = object_id_to_comment( $activity['object']['id'] );
54
55	// If comment exists, call update action.
56	if ( $check_dupe ) {
57	/**
58	* Fires when a Create activity is received for an existing comment.
59	*
60	* @param array $activity The activity-object.
61	* @param int $user_id The id of the local blog-user.
62	* @param \WP_Comment\|\WP_Error $check_dupe The comment object or WP_Error.
63	* @param \Activitypub\Activity\Activity $activity_object The activity object.
64	*/
65	\do_action( 'activitypub_inbox_update', $activity, $user_id, $activity_object );
66	return;
67	}
68
69	if ( is_self_ping( $activity['object']['id'] ) ) {
70	// @todo maybe send email.
71	return;
72	}
73
74	$state = Interactions::add_comment( $activity );
75	$reaction = null;
76
77	if ( $state && ! \is_wp_error( $state ) ) {
78	$reaction = \get_comment( $state );
79	}
80
81	/**
82	* Fires after a Create activity has been handled.
83	*
84	* @param array $activity The activity-object.
85	* @param int $user_id The id of the local blog-user.
86	* @param \WP_Comment\|\WP_Error $state The comment object or WP_Error.
87	* @param \WP_Comment\|\WP_Error\|null $reaction The reaction object or WP_Error.
88	*/
89	\do_action( 'activitypub_handled_create', $activity, $user_id, $state, $reaction );
90	}
91
92	/**
93	* Validate the object.
94	*
95	* @param bool $valid The validation state.
96	* @param string $param The object parameter.
97	* @param \WP_REST_Request $request The request object.
98	*
99	* @return bool The validation state: true if valid, false if not.
100	*/
101	public static function validate_object( $valid, $param, $request ) {
102	$json_params = $request->get_json_params();
103
104	if ( empty( $json_params['type'] ) ) {
105	return false;
106	}
107
108	if (
109	'Create' !== $json_params['type'] \|\|
110	is_wp_error( $request )
111	) {
112	return $valid;
113	}
114
115	$object = $json_params['object'];
116
117	if ( ! is_array( $object ) ) {
118	return false;
119	}
120
121	$required = array(
122	'id',
123	'inReplyTo',
124	'content',
125	);
126
127	if ( array_intersect( $required, array_keys( $object ) ) !== $required ) {
128	return false;
129	}
130
131	return $valid;
132	}
133	}
134