266 lines
9.6 KiB
PHP
266 lines
9.6 KiB
PHP
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<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2011 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: luofei614 <weibo.com/luofei614>
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// +----------------------------------------------------------------------
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// | 修改者: anuo (本权限类在原3.2.3的基础上修改过来的)
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// +----------------------------------------------------------------------
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namespace fast;
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use think\Db;
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use think\Config;
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use think\Session;
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use think\Request;
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/**
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* 权限认证类
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* 功能特性：
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* 1，是对规则进行认证，不是对节点进行认证。用户可以把节点当作规则名称实现对节点进行认证。
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* $auth=new Auth(); $auth->check('规则名称','用户id')
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* 2，可以同时对多条规则进行认证，并设置多条规则的关系（or或者and）
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* $auth=new Auth(); $auth->check('规则1,规则2','用户id','and')
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* 第三个参数为and时表示，用户需要同时具有规则1和规则2的权限。 当第三个参数为or时，表示用户值需要具备其中一个条件即可。默认为or
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* 3，一个用户可以属于多个用户组(think_auth_group_access表 定义了用户所属用户组)。我们需要设置每个用户组拥有哪些规则(think_auth_group 定义了用户组权限)
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* 4，支持规则表达式。
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* 在think_auth_rule 表中定义一条规则，condition字段就可以定义规则表达式。 如定义{score}>5 and {score}<100
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* 表示用户的分数在5-100之间时这条规则才会通过。
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*/
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class Auth
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{
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/**
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* @var object 对象实例
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*/
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protected static $instance;
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protected $rules = [];
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/**
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* 当前请求实例
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* @var Request
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*/
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protected $request;
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//默认配置
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protected $config = [
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'auth_on' => 1, // 权限开关
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'auth_type' => 1, // 认证方式，1为实时认证；2为登录认证。
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'auth_group' => 'auth_group', // 用户组数据表名
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'auth_group_access' => 'auth_group_access', // 用户-用户组关系表
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'auth_rule' => 'auth_rule', // 权限规则表
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'auth_user' => 'user', // 用户信息表
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];
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public function __construct()
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{
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if ($auth = Config::get('auth')) {
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$this->config = array_merge($this->config, $auth);
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}
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// 初始化request
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$this->request = Request::instance();
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}
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/**
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* 初始化
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* @access public
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* @param array $options 参数
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* @return Auth
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*/
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public static function instance($options = [])
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{
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if (is_null(self::$instance)) {
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self::$instance = new static($options);
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}
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return self::$instance;
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}
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/**
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* 检查权限
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* @param string|array $name 需要验证的规则列表,支持逗号分隔的权限规则或索引数组
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* @param int $uid 认证用户的id
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* @param string $relation 如果为 'or' 表示满足任一条规则即通过验证;如果为 'and'则表示需满足所有规则才能通过验证
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* @param string $mode 执行验证的模式,可分为url,normal
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* @return bool 通过验证返回true;失败返回false
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*/
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public function check($name, $uid, $relation = 'or', $mode = 'url')
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{
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if (!$this->config['auth_on']) {
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return true;
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}
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// 获取用户需要验证的所有有效规则列表
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$rulelist = $this->getRuleList($uid);
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if (in_array('*', $rulelist)) {
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return true;
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}
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if (is_string($name)) {
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$name = strtolower($name);
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if (strpos($name, ',') !== false) {
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$name = explode(',', $name);
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} else {
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$name = [$name];
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}
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}
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$list = []; //保存验证通过的规则名
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if ('url' == $mode) {
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$REQUEST = unserialize(strtolower(serialize($this->request->param())));
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}
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foreach ($rulelist as $rule) {
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$query = preg_replace('/^.+\?/U', '', $rule);
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if ('url' == $mode && $query != $rule) {
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parse_str($query, $param); //解析规则中的param
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$intersect = array_intersect_assoc($REQUEST, $param);
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$rule = preg_replace('/\?.*$/U', '', $rule);
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if (in_array($rule, $name) && $intersect == $param) {
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//如果节点相符且url参数满足
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$list[] = $rule;
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}
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} else {
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if (in_array($rule, $name)) {
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$list[] = $rule;
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}
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}
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}
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if ('or' == $relation && !empty($list)) {
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return true;
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}
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$diff = array_diff($name, $list);
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if ('and' == $relation && empty($diff)) {
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return true;
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}
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return false;
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}
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/**
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* 根据用户id获取用户组,返回值为数组
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* @param int $uid 用户id
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* @return array 用户所属的用户组 array(
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* array('uid'=>'用户id','group_id'=>'用户组id','name'=>'用户组名称','rules'=>'用户组拥有的规则id,多个,号隔开'),
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* ...)
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*/
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public function getGroups($uid)
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{
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static $groups = [];
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if (isset($groups[$uid])) {
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return $groups[$uid];
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}
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// 执行查询
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$user_groups = Db::name($this->config['auth_group_access'])
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->alias('aga')
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->join('__' . strtoupper($this->config['auth_group']) . '__ ag', 'aga.group_id = ag.id', 'LEFT')
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->field('aga.uid,aga.group_id,ag.id,ag.pid,ag.name,ag.rules')
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->where("aga.uid='{$uid}' and ag.status='normal'")
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->select();
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$groups[$uid] = $user_groups ?: [];
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return $groups[$uid];
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}
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/**
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* 获得权限规则列表
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* @param int $uid 用户id
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* @return array
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*/
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public function getRuleList($uid)
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{
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static $_rulelist = []; //保存用户验证通过的权限列表
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if (isset($_rulelist[$uid])) {
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return $_rulelist[$uid];
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}
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if (2 == $this->config['auth_type'] && Session::has('_rule_list_' . $uid)) {
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return Session::get('_rule_list_' . $uid);
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}
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// 读取用户规则节点
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$ids = $this->getRuleIds($uid);
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if (empty($ids)) {
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$_rulelist[$uid] = [];
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return [];
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}
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// 筛选条件
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$where = [
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'status' => 'normal'
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];
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if (!in_array('*', $ids)) {
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$where['id'] = ['in', $ids];
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}
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//读取用户组所有权限规则
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$this->rules = Db::name($this->config['auth_rule'])->where($where)->field('id,pid,condition,icon,name,title,ismenu')->select();
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//循环规则，判断结果。
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$rulelist = []; //
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if (in_array('*', $ids)) {
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$rulelist[] = "*";
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}
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foreach ($this->rules as $rule) {
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//超级管理员无需验证condition
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if (!empty($rule['condition']) && !in_array('*', $ids)) {
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//根据condition进行验证
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$user = $this->getUserInfo($uid); //获取用户信息,一维数组
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$nums = 0;
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$condition = str_replace(['&&', '||'], "\r\n", $rule['condition']);
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$condition = preg_replace('/\{(\w*?)\}/', '\\1', $condition);
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$conditionArr = explode("\r\n", $condition);
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foreach ($conditionArr as $index => $item) {
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preg_match("/^(\w+)\s?([\>\<\=]+)\s?(.*)$/", trim($item), $matches);
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if ($matches && isset($user[$matches[1]]) && version_compare($user[$matches[1]], $matches[3], $matches[2])) {
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$nums++;
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}
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}
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if ($conditionArr && ((stripos($rule['condition'], "||") !== false && $nums > 0) || count($conditionArr) == $nums)) {
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$rulelist[$rule['id']] = strtolower($rule['name']);
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}
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} else {
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//只要存在就记录
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$rulelist[$rule['id']] = strtolower($rule['name']);
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}
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}
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$_rulelist[$uid] = $rulelist;
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//登录验证则需要保存规则列表
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if (2 == $this->config['auth_type']) {
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//规则列表结果保存到session
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Session::set('_rule_list_' . $uid, $rulelist);
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}
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return array_unique($rulelist);
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}
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public function getRuleIds($uid)
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{
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//读取用户所属用户组
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$groups = $this->getGroups($uid);
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$ids = []; //保存用户所属用户组设置的所有权限规则id
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foreach ($groups as $g) {
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$ids = array_merge($ids, explode(',', trim($g['rules'], ',')));
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}
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$ids = array_unique($ids);
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return $ids;
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}
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/**
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* 获得用户资料
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* @param int $uid 用户id
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* @return mixed
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*/
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protected function getUserInfo($uid)
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{
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static $user_info = [];
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$user = Db::name($this->config['auth_user']);
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// 获取用户表主键
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$_pk = is_string($user->getPk()) ? $user->getPk() : 'uid';
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if (!isset($user_info[$uid])) {
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$user_info[$uid] = $user->where($_pk, $uid)->find();
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}
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return $user_info[$uid];
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}
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}
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