wordpress-activitypub/includes/class-user-factory.php

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<?php
namespace Activitypub;
use WP_Error;
use WP_User_Query;
use Activitypub\Model\User;
use Activitypub\Model\Blog_User;
use Activitypub\Model\Application_User;
class User_Factory {
/**
* The ID of the Blog User
*
* @var int
*/
const BLOG_USER_ID = 0;
/**
* The ID of the Application User
*
* @var int
*/
const APPLICATION_USER_ID = -1;
/**
* Get the User by ID
*
* @param int $user_id The User-ID.
*
* @return \Acitvitypub\Model\User The User.
*/
public static function get_by_id( $user_id ) {
$user_id = (int) $user_id;
if ( self::BLOG_USER_ID === $user_id ) {
return new Blog_User( $user_id );
} elseif ( self::APPLICATION_USER_ID === $user_id ) {
return new Application_User( $user_id );
} else {
$user = get_user_by( 'ID', $user_id );
if ( ! $user || ! \user_can( $user, 'publish_posts' ) ) {
return new WP_Error(
'activitypub_user_not_found',
\__( 'User not found', 'activitypub' ),
array( 'status' => 404 )
);
}
return new User( $user->ID );
}
}
/**
* Get the User by username.
*
* @param string $username The User-Name.
*
* @return \Acitvitypub\Model\User The User.
*/
public static function get_by_username( $username ) {
// check for blog user.
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if ( Blog_User::get_default_username() === $username ) {
return self::get_by_id( self::BLOG_USER_ID );
}
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// check for application user.
if ( 'application' === $username ) {
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return self::get_by_id( self::APPLICATION_USER_ID );
}
// check for 'activitypub_username' meta
$user = new WP_User_Query(
array(
'number' => 1,
'hide_empty' => true,
'fields' => 'ID',
'meta_query' => array(
'relation' => 'OR',
array(
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'key' => 'activitypub_user_identifier',
'value' => $username,
'compare' => 'LIKE',
),
),
)
);
if ( $user->results ) {
return self::get_by_id( $user->results[0] );
}
// check for login or nicename.
$user = new WP_User_Query(
array(
'search' => $username,
'search_columns' => array( 'user_login', 'user_nicename' ),
'number' => 1,
'hide_empty' => true,
'fields' => 'ID',
)
);
if ( $user->results ) {
return self::get_by_id( $user->results[0] );
}
return new WP_Error(
'activitypub_user_not_found',
\__( 'User not found', 'activitypub' ),
array( 'status' => 404 )
);
}
/**
* Get the User by resource.
*
* @param string $resource The User-Resource.
*
* @return \Acitvitypub\Model\User The User.
*/
public static function get_by_resource( $resource ) {
if ( \strpos( $resource, '@' ) === false ) {
return new WP_Error(
'activitypub_unsupported_resource',
\__( 'Resource is invalid', 'activitypub' ),
array( 'status' => 400 )
);
}
$resource = \str_replace( 'acct:', '', $resource );
$resource_identifier = \substr( $resource, 0, \strrpos( $resource, '@' ) );
$resource_host = \str_replace( 'www.', '', \substr( \strrchr( $resource, '@' ), 1 ) );
$blog_host = \str_replace( 'www.', '', \wp_parse_url( \home_url( '/' ), \PHP_URL_HOST ) );
if ( $blog_host !== $resource_host ) {
return new WP_Error(
'activitypub_wrong_host',
\__( 'Resource host does not match blog host', 'activitypub' ),
array( 'status' => 404 )
);
}
return self::get_by_username( $resource_identifier );
}
/**
* Get the User by resource.
*
* @param string $resource The User-Resource.
*
* @return \Acitvitypub\Model\User The User.
*/
public static function get_by_various( $id ) {
if ( is_numeric( $id ) ) {
return self::get_by_id( $id );
} elseif ( filter_var( $id, FILTER_VALIDATE_URL ) ) {
return self::get_by_resource( $id );
} else {
return self::get_by_username( $id );
}
}
}