wordpress-activitypub/includes/class-http.php

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<?php
namespace Activitypub;
use WP_Error;
/**
* ActivityPub HTTP Class
*
* @author Matthias Pfefferle
*/
class Http {
/**
* Send a POST Request with the needed HTTP Headers
*
* @param string $url The URL endpoint
* @param string $body The Post Body
* @param int $user_id The WordPress User-ID
*
* @return array|WP_Error The POST Response or an WP_ERROR
*/
public static function post( $url, $body, $user_id ) {
$date = \gmdate( 'D, d M Y H:i:s T' );
$digest = Signature::generate_digest( $body );
$signature = Signature::generate_signature( $user_id, 'post', $url, $date, $digest );
$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',
'Digest' => "SHA-256=$digest",
'Signature' => $signature,
'Date' => $date,
),
'body' => $body,
);
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$response = \wp_safe_remote_post( $url, $args );
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$code = \wp_remote_retrieve_response_code( $response );
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if ( 400 >= $code && 500 <= $code ) {
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$response = new WP_Error( $code, __( 'Failed HTTP Request', 'activitypub' ) );
}
\do_action( 'activitypub_safe_remote_post_response', $response, $url, $body, $user_id );
return $response;
}
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/**
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* Send a GET Request with the needed HTTP Headers
*
* @param string $url The URL endpoint
* @param int $user_id The WordPress User-ID
*
* @return array|WP_Error The GET Response or an WP_ERROR
*/
public static function get( $url, $user_id ) {
$date = \gmdate( 'D, d M Y H:i:s T' );
$signature = Signature::generate_signature( $user_id, 'get', $url, $date );
$wp_version = \get_bloginfo( 'version' );
$user_agent = \apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . \get_bloginfo( 'url' ) );
$args = array(
'timeout' => apply_filters( 'activitypub_remote_get_timeout', 100 ),
'limit_response_size' => 1048576,
'redirection' => 3,
'user-agent' => "$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 );
$code = \wp_remote_retrieve_response_code( $response );
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if ( 400 >= $code && 500 <= $code ) {
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$response = new WP_Error( $code, __( 'Failed HTTP Request', 'activitypub' ) );
}
\do_action( 'activitypub_safe_remote_get_response', $response, $url, $user_id );
return $response;
}
}