discuz x2 的鉴权密码算法

user.php

<?php

# 来自 https://github.com/langyo/docker_discuz_x2/blob/main/upload/uc_client/model/user.php
# 行 119 - 139

	function check_login($username, $password, &$user) {
		$user = $this->get_user_by_username($username);
		if(empty($user['username'])) {
			return -1;
		} elseif($user['password'] != md5(md5($password).$user['salt'])) {
			return -2;
		}
		return $user['uid'];
	}

	function add_user($username, $password, $email, $uid = 0, $questionid = '', $answer = '', $regip = '') {
		$regip = empty($regip) ? $this->base->onlineip : $regip;
		$salt = substr(uniqid(rand()), -6);
		$password = md5(md5($password).$salt);
		$sqladd = $uid ? "uid='".intval($uid)."'," : '';
		$sqladd .= $questionid > 0 ? " secques='".$this->quescrypt($questionid, $answer)."'," : " secques='',";
		$this->db->query("INSERT INTO ".UC_DBTABLEPRE."members SET $sqladd username='$username', password='$password', email='$email', regip='$regip', regdate='".$this->base->time."', salt='$salt'");
		$uid = $this->db->insert_id();
		$this->db->query("INSERT INTO ".UC_DBTABLEPRE."memberfields SET uid='$uid'");
		return $uid;
	}