vendor_user/uc_client/model/user.php

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<?php

/*
    [UCenter] (C)2001-2099 Comsenz Inc.
    This is NOT a freeware, use is subject to license terms

    $Id: user.php 1078 2011-03-30 02:00:29Z monkey $
*/

!defined('IN_UC') && exit('Access Denied');

class usermodel
{
    public $db;
    public $base;

    public function __construct(&$base)
    {
        $this->usermodel($base);
    }

    public function usermodel(&$base)
    {
        $this->base = $base;
        $this->db = $base->db;
    }

    public function get_user_by_uid($uid)
    {
        $arr = $this->db->fetch_first('SELECT * FROM '.UC_DBTABLEPRE."members WHERE uid='$uid'");

        return $arr;
    }

    public function get_user_by_username($username)
    {
        $arr = $this->db->fetch_first('SELECT * FROM '.UC_DBTABLEPRE."members WHERE username='$username'");

        return $arr;
    }

    public function get_user_by_email($email)
    {
        $arr = $this->db->fetch_first('SELECT * FROM '.UC_DBTABLEPRE."members WHERE email='$email'");

        return $arr;
    }

    public function check_username($username)
    {
        $guestexp = '\xA1\xA1|\xAC\xA3|^Guest|^\xD3\xCE\xBF\xCD|\xB9\x43\xAB\xC8';
        $len = $this->dstrlen($username);
        if ($len > 15 || $len < 3 || preg_match("/\s+|^c:\\con\\con|[%,\*\"\s\<\>\&]|$guestexp/is", $username)) {
            return false;
        } else {
            return true;
        }
    }

    public function dstrlen($str)