Event-Federation/wordpress-activitypub
Event-Federation/wordpress-activitypub
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Merge pull request #328 from Automattic/add/activitypub-conditional

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Compat: introduce a conditional to detect ActivityPub requests
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Matthias Pfefferle 2023-05-12 20:35:42 +02:00 committed by GitHub
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44
includes/functions.php
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@ -228,3 +228,47 @@ function is_tombstone( $wp_error ) {
return false;
}
/**
* Check if a request is for an ActivityPub request.
*
* @return bool False by default.
*/
function is_activitypub_request() {
global $wp_query;
/*
* ActivityPub requests are currently only made for
* author archives, singular posts, and the homepage.
*/
if ( ! \is_author() && ! \is_singular() && ! \is_home() ) {
return false;
}
// One can trigger an ActivityPub request by adding ?activitypub to the URL.
global $wp_query;
if ( isset( $wp_query->query_vars['activitypub'] ) ) {
return true;
}
/*
* The other (more common) option to make an ActivityPub request
* is to send an Accept header.
*/
if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) {
$accept = $_SERVER['HTTP_ACCEPT'];
/*
* $accept can be a single value, or a comma separated list of values.
* We want to support both scenarios,
* and return true when the header includes at least one of the following:
* - application/activity+json
* - application/ld+json
*/
if ( preg_match( '/(application\/(ld\+json|activity\+json))/', $accept ) ) {
return true;
}
}
return false;
}

1
readme.txt
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@ -115,6 +115,7 @@ Project maintained on GitHub at [automattic/wordpress-activitypub](https://githu
= Next =
* Compatibility: add a new conditional, `\Activitypub\is_activitypub_request()`, to allow third-party plugins to detect ActivityPub requests.
* Compatibility: add hooks to allow modifying images returned in ActivityPub requests.
* Compatibility: indicate that the plugin is compatible and has been tested with the latest version of WordPress, 6.2.