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<?php

/**

*

* This file is part of the phpBB Forum Software package.

*

* @copyright (c) phpBB Limited <https://www.phpbb.com>

* @license GNU General Public License, version 2 (GPL-2.0)

*

* For full copyright and license information, please see

* the docs/CREDITS.txt file.

*

*/

namespace phpbb;

/**

* User loader class

*

* This handles loading users from the database and

* storing in them in a temporary cache so we do not

* have to query the same user multiple times in

* different services.

*/

class user_loader

{

/** @var \phpbb\db\driver\driver_interface */

protected $db = null;

/** @var string */

protected $phpbb_root_path = null;

/** @var string */

protected $php_ext = null;

/** @var string */

protected $users_table = null;

/**

* Users loaded from the DB

*

* @var array Array of user data that we've loaded from the DB

*/

protected $users = array();

/**

* User loader constructor

*

* @param \phpbb\db\driver\driver_interface $db A database connection

* @param string $phpbb_root_path Path to the phpbb includes directory.

* @param string $php_ext php file extension

* @param string $users_table The name of the database table (phpbb_users)

*/

public function __construct(\phpbb\db\driver\driver_interface $db, $phpbb_root_path, $php_ext, $users_table)

{

$this->db = $db;

$this->phpbb_root_path = $phpbb_root_path;

$this->php_ext = $php_ext;

$this->users_table = $users_table;

}

/**

* Load user helper

*

* @param array $user_ids

*/

public function load_users(array $user_ids)

{

$user_ids[] = ANONYMOUS;

// Make user_ids unique and convert to integer.

$user_ids = array_map('intval', array_unique($user_ids));

// Do not load users we already have in $this->users

$user_ids = array_diff($user_ids, array_keys($this->users));

if (sizeof($user_ids))

{

$sql = 'SELECT *

FROM ' . $this->users_table . '

WHERE ' . $this->db->sql_in_set('user_id', $user_ids);

$result = $this->db->sql_query($sql);

while ($row = $this->db->sql_fetchrow($result))

{

$this->users[$row['user_id']] = $row;

}

$this->db->sql_freeresult($result);

}

}

/**

* Load a user by username

*

* Stores the full data in the user cache so they do not need to be loaded again

* Returns the user id so you may use get_user() from the returned value

*

* @param string $username Raw username to load (will be cleaned)

* @return int User ID for the username

*/

public function load_user_by_username($username)

{

$sql = 'SELECT *

FROM ' . $this->users_table . "

WHERE username_clean = '" . $this->db->sql_escape(utf8_clean_string($username)) . "'";

$result = $this->db->sql_query($sql);

$row = $this->db->sql_fetchrow($result);

$this->db->sql_freeresult($result);

if ($row)

{

$this->users[$row['user_id']] = $row;

return $row['user_id'];

}

return ANONYMOUS;

}

/**

* Get a user row from our users cache

*

* @param int $user_id User ID of the user you want to retreive

* @param bool $query Should we query the database if this user has not yet been loaded?

* Typically this should be left as false and you should make sure

* you load users ahead of time with load_users()

* @return array|bool Row from the database of the user or Anonymous if the user wasn't loaded/does not exist

* or bool False if the anonymous user was not loaded

*/

public function get_user($user_id, $query = false)

{

if (isset($this->users[$user_id]))

{

return $this->users[$user_id];

}

// Query them if we must (if ANONYMOUS is sent as the user_id and we have not loaded Anonymous yet, we must load Anonymous as a last resort)

else if ($query || $user_id == ANONYMOUS)

{

$this->load_users(array($user_id));

return $this->get_user($user_id);

}

return $this->get_user(ANONYMOUS);

}

/**

* Get username

*

* @param int $user_id User ID of the user you want to retreive the username for

* @param string $mode The mode to load (same as get_username_string). One of the following:

* profile (for getting an url to the profile)

* username (for obtaining the username)

* colour (for obtaining the user colour)

* full (for obtaining a html string representing a coloured link to the users profile)

* no_profile (the same as full but forcing no profile link)

* @param string $guest_username Optional parameter to specify the guest username. It will be used in favor of the GUEST language variable then.

* @param string $custom_profile_url Optional parameter to specify a profile url. The user id get appended to this url as &amp;u={user_id}

* @param bool $query Should we query the database if this user has not yet been loaded?

* Typically this should be left as false and you should make sure

* you load users ahead of time with load_users()

* @return string

*/

public function get_username($user_id, $mode, $guest_username = false, $custom_profile_url = false, $query = false)

{

if (!($user = $this->get_user($user_id, $query)))

{

return '';

}

return get_username_string($mode, $user['user_id'], $user['username'], $user['user_colour'], $guest_username, $custom_profile_url);

}

/**

* Get avatar

*

* @param int $user_id User ID of the user you want to retreive the avatar for

* @param bool $query Should we query the database if this user has not yet been loaded?

* Typically this should be left as false and you should make sure

* you load users ahead of time with load_users()

* @return string

*/

public function get_avatar($user_id, $query = false)

{

if (!($user = $this->get_user($user_id, $query)))

{

return '';

}

if (!function_exists('get_user_avatar'))

{

include($this->phpbb_root_path . 'includes/functions_display.' . $this->php_ext);

}

return get_user_avatar($user['user_avatar'], $user['user_avatar_type'], $user['user_avatar_width'], $user['user_avatar_height']);

}

/**

* Get rank

*

* @param int $user_id User ID of the user you want to retreive the rank for

* @param bool $query Should we query the database if this user has not yet been loaded?

* Typically this should be left as false and you should make sure

* you load users ahead of time with load_users()

* @return array Array with keys 'rank_title', 'rank_img', and 'rank_img_src'

*/

public function get_rank($user_id, $query = false)

{

if (!($user = $this->get_user($user_id, $query)))

{

return '';

}

if (!function_exists('phpbb_get_user_rank'))

{

include($this->phpbb_root_path . 'includes/functions_display.' . $this->php_ext);

}

$rank = array(

'rank_title',

'rank_img',

'rank_img_src',

);

$user_rank_data = phpbb_get_user_rank($user, (($user['user_id'] == ANONYMOUS) ? false : $user['user_posts']));

$rank['rank_title'] = $user_rank_data['title'];

$rank['rank_img'] = $user_rank_data['img'];

$rank['rank_img_src'] = $user_rank_data['img_src'];

return $rank;

}

}