222 lines
6.2 KiB
PHP
222 lines
6.2 KiB
PHP
<?php
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/**
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* This file is part of Avatar Privacy.
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*
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* Copyright 2018-2023 Peter Putzer.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* ***
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*
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* @package mundschenk-at/avatar-privacy
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* @license http://www.gnu.org/licenses/gpl-2.0.html
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*/
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namespace Avatar_Privacy\Avatar_Handlers;
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use Avatar_Privacy\Avatar_Handlers\Avatar_Handler;
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use Avatar_Privacy\Core\User_Fields;
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use Avatar_Privacy\Data_Storage\Filesystem_Cache;
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use Avatar_Privacy\Tools\Images;
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use Avatar_Privacy\Tools\Images\Image_File;
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/**
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* Handles image caching for uploaded user avatars.
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*
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* @since 2.0.0
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*
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* @author Peter Putzer <github@mundschenk.at>
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*
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* @phpstan-type AvatarArguments array{
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* avatar?: string,
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* mimetype?: string,
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* timestamp?: bool,
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* force?: bool
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* }
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*/
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class User_Avatar_Handler implements Avatar_Handler {
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/**
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* The core API.
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*
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* @var User_Fields
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*/
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private User_Fields $user_fields;
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/**
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* The filesystem cache handler.
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*
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* @var Filesystem_Cache
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*/
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private Filesystem_Cache $file_cache;
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/**
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* The uploads base directory.
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*
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* @var string
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*/
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private string $base_dir;
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/**
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* The image editor support class.
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*
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* @var Images\Editor
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*/
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private Images\Editor $images;
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/**
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* Creates a new instance.
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*
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* @since 2.4.0 Parameter $core replaced by $user_fields.
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*
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* @param User_Fields $user_fields The user data API.
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* @param Filesystem_Cache $file_cache The file cache handler.
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* @param Images\Editor $images The image editing handler.
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*/
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public function __construct( User_Fields $user_fields, Filesystem_Cache $file_cache, Images\Editor $images ) {
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$this->user_fields = $user_fields;
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$this->file_cache = $file_cache;
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$this->images = $images;
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}
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/**
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* Retrieves the URL for the given default icon type.
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*
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* Note: Not all of the arguments provided by the `avatar_privacy_user_avatar_icon_url`
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* filter hook are actually required.
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*
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* @since 2.7.0 Unused arguments key 'type' removed.
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*
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* @param string $url The fallback image URL.
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* @param string $hash The hashed mail address.
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* @param int $size The size of the avatar image in pixels.
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* @param array $args {
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* An array of arguments.
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*
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* @type string $avatar The full-size avatar image path.
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* @type string $mimetype Optional. The expected MIME type of the avatar image. Default 'image/png'.
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* @type bool $timestamp Optional. Whether to add a timestamp for cache busting. Default false.
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* @type bool $force Optional. Whether to force the regeneration of the image file. Default false.
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* }
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*
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* @return string
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*
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* @phpstan-param AvatarArguments $args
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*/
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public function get_url( $url, $hash, $size, array $args ) {
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// Cache base directory.
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if ( empty( $this->base_dir ) ) {
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$this->base_dir = $this->file_cache->get_base_dir();
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}
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// Default arguments.
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$defaults = [
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'avatar' => '',
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'mimetype' => Image_File::PNG_IMAGE,
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'timestamp' => false,
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'force' => false,
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];
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$args = \wp_parse_args( $args, $defaults );
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$extension = Image_File::FILE_EXTENSION[ $args['mimetype'] ];
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$filename = "user/{$this->get_sub_dir( $hash )}/{$hash}-{$size}.{$extension}";
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$abspath = "{$this->base_dir}{$filename}";
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if ( $args['force'] || ! \file_exists( $abspath ) ) {
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$data = $this->images->get_resized_image_data(
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$this->images->get_image_editor( $args['avatar'] ), $size, $size, $args['mimetype']
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);
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// Save the generated PNG file (empty files will fail this check).
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if ( ! $this->file_cache->set( $filename, $data, $args['force'] ) ) {
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// Something went wrong..
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return $url;
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}
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}
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// Optionally add file modification time as `ts` query argument to bust caches.
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$query_args = [
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'ts' => $args['timestamp'] ? @\filemtime( $abspath ) : false,
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];
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return \add_query_arg(
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\rawurlencode_deep( \array_filter( $query_args ) ),
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$this->file_cache->get_url( $filename )
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);
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}
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/**
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* Calculates the subdirectory from the given identity hash.
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*
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* @since 2.1.0 Visibility changed to protected.
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*
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* @param string $identity The identity (mail address) hash.
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*
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* @return string
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*/
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protected function get_sub_dir( $identity ) {
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return \implode( '/', \str_split( \substr( $identity, 0, 2 ) ) );
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}
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/**
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* Caches the image specified by the parameters.
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*
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* @since 2.0.0
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*
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* @param string $type The image (sub-)type.
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* @param string $hash The hashed mail address.
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* @param int $size The requested size in pixels.
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* @param string $subdir The requested sub-directory.
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* @param string $extension The requested file extension.
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*
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* @return bool Returns `true` if successful, `false` otherwise.
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*/
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public function cache_image( $type, $hash, $size, $subdir, $extension ) {
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$user = $this->user_fields->get_user_by_hash( $hash );
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if ( ! empty( $user ) ) {
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$local_avatar = $this->user_fields->get_local_avatar( $user->ID );
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}
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// Could not find user or uploaded avatar.
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if ( empty( $local_avatar ) ) {
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return false;
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}
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// Prepare arguments.
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$args = [
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'avatar' => $local_avatar['file'],
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'mimetype' => $local_avatar['type'],
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];
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// Try to cache the icon.
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return ! empty( $this->get_url( '', $hash, $size, $args ) );
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}
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/**
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* Retrieves the name of the cache subdirectory for avatars provided by this
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* handler (e.g. 'gravatar'). Implementations may return an empty string if
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* the actual type can vary.
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*
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* @since 2.4.0
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*
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* @return string
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*/
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public function get_type() {
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return 'user';
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}
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}
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