activitypub / includes / class-http.php

class-http.php in ActivityPub 2.1.0, at includes/class-http.php

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1	<?php
2	namespace Activitypub;
3
4	use WP_Error;
5	use Activitypub\Collection\Users;
6
7	/**
8	* ActivityPub HTTP Class
9	*
10	* @author Matthias Pfefferle
11	*/
12	class Http {
13	/**
14	* Send a POST Request with the needed HTTP Headers
15	*
16	* @param string $url The URL endpoint
17	* @param string $body The Post Body
18	* @param int $user_id The WordPress User-ID
19	*
20	* @return array\|WP_Error The POST Response or an WP_ERROR
21	*/
22	public static function post( $url, $body, $user_id ) {
23	\do_action( 'activitypub_pre_http_post', $url, $body, $user_id );
24
25	$date = \gmdate( 'D, d M Y H:i:s T' );
26	$digest = Signature::generate_digest( $body );
27	$signature = Signature::generate_signature( $user_id, 'post', $url, $date, $digest );
28
29	$wp_version = \get_bloginfo( 'version' );
30
31	/**
32	* Filter the HTTP headers user agent.
33	*
34	* @param string $user_agent The user agent string.
35	*/
36	$user_agent = \apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . \get_bloginfo( 'url' ) );
37	$args = array(
38	'timeout' => 100,
39	'limit_response_size' => 1048576,
40	'redirection' => 3,
41	'user-agent' => "$user_agent; ActivityPub",
42	'headers' => array(
43	'Accept' => 'application/activity+json',
44	'Content-Type' => 'application/activity+json',
45	'Digest' => $digest,
46	'Signature' => $signature,
47	'Date' => $date,
48	),
49	'body' => $body,
50	);
51
52	$response = \wp_safe_remote_post( $url, $args );
53	$code = \wp_remote_retrieve_response_code( $response );
54
55	if ( $code >= 400 ) {
56	$response = new WP_Error( $code, __( 'Failed HTTP Request', 'activitypub' ), array( 'status' => $code ) );
57	}
58
59	\do_action( 'activitypub_safe_remote_post_response', $response, $url, $body, $user_id );
60
61	return $response;
62	}
63
64	/**
65	* Send a GET Request with the needed HTTP Headers
66	*
67	* @param string $url The URL endpoint
68	* @param int $user_id The WordPress User-ID
69	*
70	* @return array\|WP_Error The GET Response or an WP_ERROR
71	*/
72	public static function get( $url ) {
73	\do_action( 'activitypub_pre_http_get', $url );
74
75	$date = \gmdate( 'D, d M Y H:i:s T' );
76	$signature = Signature::generate_signature( Users::APPLICATION_USER_ID, 'get', $url, $date );
77
78	$wp_version = \get_bloginfo( 'version' );
79
80	/**
81	* Filter the HTTP headers user agent.
82	*
83	* @param string $user_agent The user agent string.
84	*/
85	$user_agent = \apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . \get_bloginfo( 'url' ) );
86
87	$args = array(
88	'timeout' => apply_filters( 'activitypub_remote_get_timeout', 100 ),
89	'limit_response_size' => 1048576,
90	'redirection' => 3,
91	'user-agent' => "$user_agent; ActivityPub",
92	'headers' => array(
93	'Accept' => 'application/activity+json',
94	'Content-Type' => 'application/activity+json',
95	'Signature' => $signature,
96	'Date' => $date,
97	),
98	);
99
100	$response = \wp_safe_remote_get( $url, $args );
101	$code = \wp_remote_retrieve_response_code( $response );
102
103	if ( $code >= 400 ) {
104	$response = new WP_Error( $code, __( 'Failed HTTP Request', 'activitypub' ), array( 'status' => $code ) );
105	}
106
107	\do_action( 'activitypub_safe_remote_get_response', $response, $url );
108
109	return $response;
110	}
111
112	/**
113	* Check for URL for Tombstone.
114	*
115	* @param string $url The URL to check.
116	*
117	* @return bool True if the URL is a tombstone.
118	*/
119	public static function is_tombstone( $url ) {
120	\do_action( 'activitypub_pre_http_is_tombstone', $url );
121
122	$response = \wp_safe_remote_get( $url );
123	$code = \wp_remote_retrieve_response_code( $response );
124
125	if ( in_array( (int) $code, array( 404, 410 ), true ) ) {
126	return true;
127	}
128
129	return false;
130	}
131	}
132