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- <?php
-
- // +----------------------------------------------------------------------
- // | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
- // +----------------------------------------------------------------------
- // | Copyright (c) 2011 http://thinkphp.cn All rights reserved.
- // +----------------------------------------------------------------------
- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
- // +----------------------------------------------------------------------
- // | Author: luofei614 <weibo.com/luofei614>
- // +----------------------------------------------------------------------
- // | 修改者: anuo (本权限类在原3.2.3的基础上修改过来的)
- // +----------------------------------------------------------------------
-
- namespace fast;
-
- use think\Db;
- use think\Config;
- use think\Session;
- use think\Request;
-
- /**
- * 权限认证类
- * 功能特性:
- * 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。
- * $auth=new Auth(); $auth->check('规则名称','用户id')
- * 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)
- * $auth=new Auth(); $auth->check('规则1,规则2','用户id','and')
- * 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
- * 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)
- * 4,支持规则表达式。
- * 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
- * 表示用户的分数在5-100之间时这条规则才会通过。
- */
- class Auth
- {
-
- /**
- * @var object 对象实例
- */
- protected static $instance;
- protected $rules = [];
-
- /**
- * 当前请求实例
- * @var Request
- */
- protected $request;
- //默认配置
- protected $config = [
- 'auth_on' => 1, // 权限开关
- 'auth_type' => 1, // 认证方式,1为实时认证;2为登录认证。
- 'auth_group' => 'auth_group', // 用户组数据表名
- 'auth_group_access' => 'auth_group_access', // 用户-用户组关系表
- 'auth_rule' => 'auth_rule', // 权限规则表
- 'auth_user' => 'user', // 用户信息表
- ];
-
- public function __construct()
- {
- if ($auth = Config::get('auth')) {
- $this->config = array_merge($this->config, $auth);
- }
- // 初始化request
- $this->request = Request::instance();
- }
-
- /**
- * 初始化
- * @access public
- * @param array $options 参数
- * @return Auth
- */
- public static function instance($options = [])
- {
- if (is_null(self::$instance)) {
- self::$instance = new static($options);
- }
-
- return self::$instance;
- }
-
- /**
- * 检查权限
- * @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
- * @param int $uid 认证用户的id
- * @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
- * @param string $mode 执行验证的模式,可分为url,normal
- * @return bool 通过验证返回true;失败返回false
- */
- public function check($name, $uid, $relation = 'or', $mode = 'url')
- {
- if (!$this->config['auth_on']) {
- return true;
- }
- // 获取用户需要验证的所有有效规则列表
- $rulelist = $this->getRuleList($uid);
- if (in_array('*', $rulelist)) {
- return true;
- }
-
- if (is_string($name)) {
- $name = strtolower($name);
- if (strpos($name, ',') !== false) {
- $name = explode(',', $name);
- } else {
- $name = [$name];
- }
- }
- $list = []; //保存验证通过的规则名
- if ('url' == $mode) {
- $REQUEST = unserialize(strtolower(serialize($this->request->param())));
- }
- foreach ($rulelist as $rule) {
- $query = preg_replace('/^.+\?/U', '', $rule);
- if ('url' == $mode && $query != $rule) {
- parse_str($query, $param); //解析规则中的param
- $intersect = array_intersect_assoc($REQUEST, $param);
- $rule = preg_replace('/\?.*$/U', '', $rule);
- if (in_array($rule, $name) && $intersect == $param) {
- //如果节点相符且url参数满足
- $list[] = $rule;
- }
- } else {
- if (in_array($rule, $name)) {
- $list[] = $rule;
- }
- }
- }
- if ('or' == $relation && !empty($list)) {
- return true;
- }
- $diff = array_diff($name, $list);
- if ('and' == $relation && empty($diff)) {
- return true;
- }
-
- return false;
- }
-
- /**
- * 根据用户id获取用户组,返回值为数组
- * @param int $uid 用户id
- * @return array 用户所属的用户组 array(
- * array('uid'=>'用户id','group_id'=>'用户组id','name'=>'用户组名称','rules'=>'用户组拥有的规则id,多个,号隔开'),
- * ...)
- */
- public function getGroups($uid)
- {
- static $groups = [];
- if (isset($groups[$uid])) {
- return $groups[$uid];
- }
-
- // 执行查询
- $user_groups = Db::name($this->config['auth_group_access'])
- ->alias('aga')
- ->join('__' . strtoupper($this->config['auth_group']) . '__ ag', 'aga.group_id = ag.id', 'LEFT')
- ->field('aga.uid,aga.group_id,ag.id,ag.pid,ag.name,ag.rules')
- ->where("aga.uid='{$uid}' and ag.status='normal'")
- ->select();
- $groups[$uid] = $user_groups ?: [];
- return $groups[$uid];
- }
-
- /**
- * 获得权限规则列表
- * @param int $uid 用户id
- * @return array
- */
- public function getRuleList($uid)
- {
- static $_rulelist = []; //保存用户验证通过的权限列表
- if (isset($_rulelist[$uid])) {
- return $_rulelist[$uid];
- }
- if (2 == $this->config['auth_type'] && Session::has('_rule_list_' . $uid)) {
- return Session::get('_rule_list_' . $uid);
- }
-
- // 读取用户规则节点
- $ids = $this->getRuleIds($uid);
- if (empty($ids)) {
- $_rulelist[$uid] = [];
- return [];
- }
-
- // 筛选条件
- $where = [
- 'status' => 'normal'
- ];
- if (!in_array('*', $ids)) {
- $where['id'] = ['in', $ids];
- }
- //读取用户组所有权限规则
- $this->rules = Db::name($this->config['auth_rule'])->where($where)->field('id,pid,condition,icon,name,title,ismenu')->select();
-
- //循环规则,判断结果。
- $rulelist = []; //
- if (in_array('*', $ids)) {
- $rulelist[] = "*";
- }
- foreach ($this->rules as $rule) {
- //超级管理员无需验证condition
- if (!empty($rule['condition']) && !in_array('*', $ids)) {
- //根据condition进行验证
- $user = $this->getUserInfo($uid); //获取用户信息,一维数组
- $command = preg_replace('/\{(\w*?)\}/', '$user[\'\\1\']', $rule['condition']);
- @(eval('$condition=(' . $command . ');'));
- if ($condition) {
- $rulelist[$rule['id']] = strtolower($rule['name']);
- }
- } else {
- //只要存在就记录
- $rulelist[$rule['id']] = strtolower($rule['name']);
- }
- }
- $_rulelist[$uid] = $rulelist;
- //登录验证则需要保存规则列表
- if (2 == $this->config['auth_type']) {
- //规则列表结果保存到session
- Session::set('_rule_list_' . $uid, $rulelist);
- }
- return array_unique($rulelist);
- }
-
- public function getRuleIds($uid)
- {
- //读取用户所属用户组
- $groups = $this->getGroups($uid);
- $ids = []; //保存用户所属用户组设置的所有权限规则id
- foreach ($groups as $g) {
- $ids = array_merge($ids, explode(',', trim($g['rules'], ',')));
- }
- $ids = array_unique($ids);
- return $ids;
- }
-
- /**
- * 获得用户资料
- * @param int $uid 用户id
- * @return mixed
- */
- protected function getUserInfo($uid)
- {
- static $user_info = [];
-
- $user = Db::name($this->config['auth_user']);
- // 获取用户表主键
- $_pk = is_string($user->getPk()) ? $user->getPk() : 'uid';
- if (!isset($user_info[$uid])) {
- $user_info[$uid] = $user->where($_pk, $uid)->find();
- }
-
- return $user_info[$uid];
- }
- }
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