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updated plugin ActivityPub version 2.0.1

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This commit is contained in:
KawaiiPunk
2024-02-08 12:31:25 +00:00
committed by Gitium
parent 6e1c54f7ba
commit 50bf15833c
58 changed files with 1772 additions and 543 deletions
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214
wp-content/plugins/activitypub/includes/class-webfinger.php
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@ -15,89 +15,81 @@ class Webfinger {
/**
* Returns a users WebFinger "resource"
*
* @param int $user_id
* @param int $user_id The WordPress user id
*
* @return string The user-resource
*/
public static function get_user_resource( $user_id ) {
// use WebFinger plugin if installed
if ( \function_exists( '\get_webfinger_resource' ) ) {
return \get_webfinger_resource( $user_id, false );
}
$user = Users::get_by_id( $user_id );
if ( ! $user || is_wp_error( $user ) ) {
return '';
}
return $user->get_resource();
return $user->get_webfinger();
}
/**
* Resolve a WebFinger resource
*
* @param string $resource The WebFinger resource
* @param string $uri The WebFinger Resource
*
* @return string|WP_Error The URL or WP_Error
*/
public static function resolve( $resource ) {
if ( ! $resource ) {
return null;
public static function resolve( $uri ) {
$data = self::get_data( $uri );
if ( \is_wp_error( $data ) ) {
return $data;
}
if ( ! preg_match( '/^@?' . ACTIVITYPUB_USERNAME_REGEXP . '$/i', $resource, $m ) ) {
return null;
}
$transient_key = 'activitypub_resolve_' . ltrim( $resource, '@' );
$link = \get_transient( $transient_key );
if ( $link ) {
return $link;
}
$url = \add_query_arg( 'resource', 'acct:' . ltrim( $resource, '@' ), 'https://' . $m[2] . '/.well-known/webfinger' );
if ( ! \wp_http_validate_url( $url ) ) {
$response = new WP_Error( 'invalid_webfinger_url', null, $url );
\set_transient( $transient_key, $response, HOUR_IN_SECONDS ); // Cache the error for a shorter period.
return $response;
}
// try to access author URL
$response = \wp_remote_get(
$url,
array(
'headers' => array( 'Accept' => 'application/jrd+json' ),
'redirection' => 2,
'timeout' => 2,
)
);
if ( \is_wp_error( $response ) ) {
$link = new WP_Error( 'webfinger_url_not_accessible', null, $url );
\set_transient( $transient_key, $link, HOUR_IN_SECONDS ); // Cache the error for a shorter period.
return $link;
}
$body = \wp_remote_retrieve_body( $response );
$body = \json_decode( $body, true );
if ( empty( $body['links'] ) ) {
$link = new WP_Error( 'webfinger_url_invalid_response', null, $url );
\set_transient( $transient_key, $link, HOUR_IN_SECONDS ); // Cache the error for a shorter period.
return $link;
}
foreach ( $body['links'] as $link ) {
if ( 'self' === $link['rel'] && 'application/activity+json' === $link['type'] ) {
\set_transient( $transient_key, $link['href'], WEEK_IN_SECONDS );
foreach ( $data['links'] as $link ) {
if (
'self' === $link['rel'] &&
'application/activity+json' === $link['type']
) {
return $link['href'];
}
}
$link = new WP_Error( 'webfinger_url_no_activitypub', null, $body );
\set_transient( $transient_key, $link, HOUR_IN_SECONDS ); // Cache the error for a shorter period.
return $link;
return new WP_Error( 'webfinger_url_no_activitypub', null, $data );
}
/**
* Transform a URI to an acct <identifier>@<host>
*
* @param string $uri The URI (acct:, mailto:, http:, https:)
*
* @return string|WP_Error Error or acct URI
*/
public static function uri_to_acct( $uri ) {
$data = self::get_data( $uri );
if ( is_wp_error( $data ) ) {
return $data;
}
// check if subject is an acct URI
if (
isset( $data['subject'] ) &&
\str_starts_with( $data['subject'], 'acct:' )
) {
return $data['subject'];
}
// search for an acct URI in the aliases
if ( isset( $data['aliases'] ) ) {
foreach ( $data['aliases'] as $alias ) {
if ( \str_starts_with( $alias, 'acct:' ) ) {
return $alias;
}
}
}
return new WP_Error(
'webfinger_url_no_acct',
__( 'No acct URI found.', 'activitypub' ),
$data
);
}
/**
@ -137,7 +129,7 @@ class Webfinger {
}
if ( empty( $host ) ) {
return new WP_Error( 'invalid_identifier', __( 'Invalid Identifier', 'activitypub' ) );
return new WP_Error( 'webfinger_invalid_identifier', __( 'Invalid Identifier', 'activitypub' ) );
}
return array( $identifier, $host );
@ -146,55 +138,70 @@ class Webfinger {
/**
* Get the WebFinger data for a given URI
*
* @param string $identifier The Identifier: <identifier>@<host>
* @param string $host The Host: <identifier>@<host>
* @param string $uri The Identifier: <identifier>@<host> or URI
*
* @return WP_Error|array Error reaction or array with
* identifier and host as values
*/
public static function get_data( $identifier, $host ) {
$webfinger_url = 'https://' . $host . '/.well-known/webfinger?resource=' . rawurlencode( $identifier );
$response = wp_safe_remote_get(
$webfinger_url,
array(
'headers' => array( 'Accept' => 'application/jrd+json' ),
'redirection' => 0,
'timeout' => 2,
)
);
if ( is_wp_error( $response ) ) {
return new WP_Error( 'webfinger_url_not_accessible', null, $webfinger_url );
}
$body = wp_remote_retrieve_body( $response );
return json_decode( $body, true );
}
/**
* Undocumented function
*
* @return void
*/
public static function get_remote_follow_endpoint( $uri ) {
public static function get_data( $uri ) {
$identifier_and_host = self::get_identifier_and_host( $uri );
if ( is_wp_error( $identifier_and_host ) ) {
return $identifier_and_host;
}
$transient_key = self::generate_cache_key( $uri );
list( $identifier, $host ) = $identifier_and_host;
$data = self::get_data( $identifier, $host );
$data = \get_transient( $transient_key );
if ( $data ) {
return $data;
}
$webfinger_url = 'https://' . $host . '/.well-known/webfinger?resource=' . rawurlencode( $identifier );
$response = wp_safe_remote_get(
$webfinger_url,
array(
'headers' => array( 'Accept' => 'application/jrd+json' ),
)
);
if ( is_wp_error( $response ) ) {
return new WP_Error(
'webfinger_url_not_accessible',
__( 'The WebFinger Resource is not accessible.', 'activitypub' ),
$webfinger_url
);
}
$body = wp_remote_retrieve_body( $response );
$data = json_decode( $body, true );
\set_transient( $transient_key, $data, WEEK_IN_SECONDS );
return $data;
}
/**
* Get the Remote-Follow endpoint for a given URI
*
* @return string|WP_Error Error or the Remote-Follow endpoint URI.
*/
public static function get_remote_follow_endpoint( $uri ) {
$data = self::get_data( $uri );
if ( is_wp_error( $data ) ) {
return $data;
}
if ( empty( $data['links'] ) ) {
return new WP_Error( 'webfinger_url_invalid_response', null, $data );
return new WP_Error(
'webfinger_missing_links',
__( 'No valid Link elements found.', 'activitypub' ),
$data
);
}
foreach ( $data['links'] as $link ) {
@ -203,6 +210,27 @@ class Webfinger {
}
}
return new WP_Error( 'webfinger_remote_follow_endpoint_invalid', $data, array( 'status' => 417 ) );
return new WP_Error(
'webfinger_missing_remote_follow_endpoint',
__( 'No valid Remote-Follow endpoint found.', 'activitypub' ),
$data
);
}
/**
* Generate a cache key for a given URI
*
* @param string $uri A WebFinger Resource URI
*
* @return string The cache key
*/
public static function generate_cache_key( $uri ) {
$uri = ltrim( $uri, '@' );
if ( filter_var( $uri, FILTER_VALIDATE_EMAIL ) ) {
$uri = 'acct:' . $uri;
}
return 'webfinger_' . md5( $uri );
}
}