mirror of
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232 lines
9.9 KiB
PHP
232 lines
9.9 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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namespace Think;
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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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*
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* 4，支持规则表达式。
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* 在think_auth_rule 表中定义一条规则时，如果type为1， 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。
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*/
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//数据库
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/*
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-- ----------------------------
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-- think_auth_rule，规则表，
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-- id:主键，name：规则唯一标识, title：规则中文名称 status 状态：为1正常，为0禁用，condition：规则表达式，为空表示存在就验证，不为空表示按照条件验证
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-- ----------------------------
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DROP TABLE IF EXISTS `think_auth_rule`;
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CREATE TABLE `think_auth_rule` (
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`id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT,
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`name` char(80) NOT NULL DEFAULT '',
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`title` char(20) NOT NULL DEFAULT '',
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`type` tinyint(1) NOT NULL DEFAULT '1',
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`status` tinyint(1) NOT NULL DEFAULT '1',
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`condition` char(100) NOT NULL DEFAULT '', # 规则附件条件,满足附加条件的规则,才认为是有效的规则
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PRIMARY KEY (`id`),
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UNIQUE KEY `name` (`name`)
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) ENGINE=MyISAM DEFAULT CHARSET=utf8;
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-- ----------------------------
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-- think_auth_group 用户组表，
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-- id：主键， title:用户组中文名称， rules：用户组拥有的规则id， 多个规则","隔开，status 状态：为1正常，为0禁用
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-- ----------------------------
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DROP TABLE IF EXISTS `think_auth_group`;
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CREATE TABLE `think_auth_group` (
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`id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT,
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`title` char(100) NOT NULL DEFAULT '',
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`status` tinyint(1) NOT NULL DEFAULT '1',
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`rules` char(80) NOT NULL DEFAULT '',
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PRIMARY KEY (`id`)
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) ENGINE=MyISAM DEFAULT CHARSET=utf8;
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-- ----------------------------
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-- think_auth_group_access 用户组明细表
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-- uid:用户id，group_id：用户组id
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-- ----------------------------
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DROP TABLE IF EXISTS `think_auth_group_access`;
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CREATE TABLE `think_auth_group_access` (
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`uid` mediumint(8) unsigned NOT NULL,
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`group_id` mediumint(8) unsigned NOT NULL,
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UNIQUE KEY `uid_group_id` (`uid`,`group_id`),
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KEY `uid` (`uid`),
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KEY `group_id` (`group_id`)
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) ENGINE=MyISAM DEFAULT CHARSET=utf8;
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*/
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class Auth{
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//默认配置
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protected $_config = array(
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'AUTH_ON' => true, // 认证开关
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'AUTH_TYPE' => 1, // 认证方式，1为实时认证；2为登录认证。
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'AUTH_GROUP' => 'auth_group', // 用户组数据表名
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'AUTH_GROUP_ACCESS' => 'auth_group_access', // 用户-用户组关系表
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'AUTH_RULE' => 'auth_rule', // 权限规则表
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'AUTH_USER' => 'member' // 用户信息表
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);
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public function __construct() {
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$prefix = C('DB_PREFIX');
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$this->_config['AUTH_GROUP'] = $prefix.$this->_config['AUTH_GROUP'];
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$this->_config['AUTH_RULE'] = $prefix.$this->_config['AUTH_RULE'];
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$this->_config['AUTH_USER'] = $prefix.$this->_config['AUTH_USER'];
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$this->_config['AUTH_GROUP_ACCESS'] = $prefix.$this->_config['AUTH_GROUP_ACCESS'];
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if (C('AUTH_CONFIG')) {
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//可设置配置项 AUTH_CONFIG, 此配置项为数组。
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$this->_config = array_merge($this->_config, C('AUTH_CONFIG'));
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}
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}
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/**
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* 检查权限
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* @param name string|array 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 uid int 认证用户的id
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* @param string mode 执行check的模式
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* @param relation string 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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* @return boolean 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, $type=1, $mode='url', $relation='or') {
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if (!$this->_config['AUTH_ON'])
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return true;
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$authList = $this->getAuthList($uid,$type); //获取用户需要验证的所有有效规则列表
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if (is_string($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 = array($name);
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}
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}
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$list = array(); //保存验证通过的规则名
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if ($mode=='url') {
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$REQUEST = unserialize( strtolower(serialize($_REQUEST)) );
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}
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foreach ( $authList as $auth ) {
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$query = preg_replace('/^.+\?/U','',$auth);
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if ($mode=='url' && $query!=$auth ) {
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parse_str($query,$param); //解析规则中的param
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$intersect = array_intersect_assoc($REQUEST,$param);
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$auth = preg_replace('/\?.*$/U','',$auth);
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if ( in_array($auth,$name) && $intersect==$param ) { //如果节点相符且url参数满足
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$list[] = $auth ;
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}
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}else if (in_array($auth , $name)){
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$list[] = $auth ;
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}
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}
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if ($relation == 'or' and !empty($list)) {
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return true;
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}
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$diff = array_diff($name, $list);
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if ($relation == 'and' and empty($diff)) {
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return true;
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}
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return false;
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}
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/**
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* 根据用户id获取用户组,返回值为数组
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* @param uid int 用户id
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* @return array 用户所属的用户组 array(
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* array('uid'=>'用户id','group_id'=>'用户组id','title'=>'用户组名称','rules'=>'用户组拥有的规则id,多个,号隔开'),
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* ...)
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*/
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public function getGroups($uid) {
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static $groups = array();
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if (isset($groups[$uid]))
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return $groups[$uid];
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$user_groups = M()
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->table($this->_config['AUTH_GROUP_ACCESS'] . ' a')
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->where("a.uid='$uid' and g.status='1'")
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->join($this->_config['AUTH_GROUP']." g on a.group_id=g.id")
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->field('uid,group_id,title,rules')->select();
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$groups[$uid]=$user_groups?:array();
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return $groups[$uid];
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}
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/**
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* 获得权限列表
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* @param integer $uid 用户id
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* @param integer $type
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*/
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protected function getAuthList($uid,$type) {
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static $_authList = array(); //保存用户验证通过的权限列表
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$t = implode(',',(array)$type);
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if (isset($_authList[$uid.$t])) {
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return $_authList[$uid.$t];
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}
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if( $this->_config['AUTH_TYPE']==2 && isset($_SESSION['_AUTH_LIST_'.$uid.$t])){
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return $_SESSION['_AUTH_LIST_'.$uid.$t];
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}
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//读取用户所属用户组
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$groups = $this->getGroups($uid);
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$ids = array();//保存用户所属用户组设置的所有权限规则id
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foreach ($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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if (empty($ids)) {
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$_authList[$uid.$t] = array();
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return array();
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}
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$map=array(
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'id'=>array('in',$ids),
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'type'=>$type,
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'status'=>1,
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);
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//读取用户组所有权限规则
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$rules = M()->table($this->_config['AUTH_RULE'])->where($map)->field('condition,name')->select();
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//循环规则，判断结果。
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$authList = array(); //
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foreach ($rules as $rule) {
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if (!empty($rule['condition'])) { //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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$command = preg_replace('/\{(\w*?)\}/', '$user[\'\\1\']', $rule['condition']);
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//dump($command);//debug
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@(eval('$condition=(' . $command . ');'));
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if ($condition) {
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$authList[] = strtolower($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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$authList[] = strtolower($rule['name']);
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}
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}
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$_authList[$uid.$t] = $authList;
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if($this->_config['AUTH_TYPE']==2){
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//规则列表结果保存到session
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$_SESSION['_AUTH_LIST_'.$uid.$t]=$authList;
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}
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return array_unique($authList);
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}
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/**
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* 获得用户资料,根据自己的情况读取数据库
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*/
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protected function getUserInfo($uid) {
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static $userinfo=array();
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if(!isset($userinfo[$uid])){
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$userinfo[$uid]=M()->where(array('uid'=>$uid))->table($this->_config['AUTH_USER'])->find();
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}
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return $userinfo[$uid];
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}
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}
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