You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

233 lines
10 KiB
PHP

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

<?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> 
// +----------------------------------------------------------------------
namespace Think;
/**
* 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。
*/
//数据库
/*
-- ----------------------------
-- think_auth_rule规则表
-- 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
-- ----------------------------
DROP TABLE IF EXISTS `think_auth_rule`;
CREATE TABLE `think_auth_rule` (
`id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT,
`name` char(80) NOT NULL DEFAULT '',
`title` char(20) NOT NULL DEFAULT '',
`type` tinyint(1) NOT NULL DEFAULT '1',
`status` tinyint(1) NOT NULL DEFAULT '1',
`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
PRIMARY KEY (`id`),
UNIQUE KEY `name` (`name`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
-- ----------------------------
-- think_auth_group 用户组表,
-- 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
-- ----------------------------
DROP TABLE IF EXISTS `think_auth_group`;
CREATE TABLE `think_auth_group` (
`id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT,
`title` char(100) NOT NULL DEFAULT '',
`status` tinyint(1) NOT NULL DEFAULT '1',
`rules` char(80) NOT NULL DEFAULT '',
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
-- ----------------------------
-- think_auth_group_access 用户组明细表
-- uid:用户idgroup_id用户组id
-- ----------------------------
DROP TABLE IF EXISTS `think_auth_group_access`;
CREATE TABLE `think_auth_group_access` (
`uid` mediumint(8) unsigned NOT NULL,
`group_id` mediumint(8) unsigned NOT NULL,
UNIQUE KEY `uid_group_id` (`uid`,`group_id`),
KEY `uid` (`uid`),
KEY `group_id` (`group_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
*/
class Auth{
//默认配置
protected $_config = array(
'AUTH_ON' => true, // 认证开关
'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' => 'member' // 用户信息表
);
public function __construct() {
$prefix = C('DB_PREFIX');
$this->_config['AUTH_GROUP'] = $prefix.$this->_config['AUTH_GROUP'];
$this->_config['AUTH_RULE'] = $prefix.$this->_config['AUTH_RULE'];
$this->_config['AUTH_USER'] = $prefix.$this->_config['AUTH_USER'];
$this->_config['AUTH_GROUP_ACCESS'] = $prefix.$this->_config['AUTH_GROUP_ACCESS'];
if (C('AUTH_CONFIG')) {
//可设置配置项 AUTH_CONFIG, 此配置项为数组。
$this->_config = array_merge($this->_config, C('AUTH_CONFIG'));
}
}
/**
* 检查权限
* @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
* @param uid int 认证用户的id
* @param string mode 执行check的模式
* @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
* @return boolean 通过验证返回true;失败返回false
*/
public function check($name, $uid, $type=1, $mode='url', $relation='or') {
if (!$this->_config['AUTH_ON'])
return true;
$authList = $this->getAuthList($uid,$type); //获取用户需要验证的所有有效规则列表
if (is_string($name)) {
$name = strtolower($name);
if (strpos($name, ',') !== false) {
$name = explode(',', $name);
} else {
$name = array($name);
}
}
$list = array(); //保存验证通过的规则名
if ($mode=='url') {
$REQUEST = unserialize( strtolower(serialize($_REQUEST)) );
}
foreach ( $authList as $auth ) {
$query = preg_replace('/^.+\?/U','',$auth);
if ($mode=='url' && $query!=$auth ) {
parse_str($query,$param); //解析规则中的param
$intersect = array_intersect_assoc($REQUEST,$param);
$auth = preg_replace('/\?.*$/U','',$auth);
if ( in_array($auth,$name) && $intersect==$param ) { //如果节点相符且url参数满足
$list[] = $auth ;
}
}else if (in_array($auth , $name)){
$list[] = $auth ;
}
}
if ($relation == 'or' and !empty($list)) {
return true;
}
$diff = array_diff($name, $list);
if ($relation == 'and' and empty($diff)) {
return true;
}
return false;
}
/**
* 根据用户id获取用户组,返回值为数组
* @param uid int 用户id
* @return array 用户所属的用户组 array(
* array('uid'=>'用户id','group_id'=>'用户组id','title'=>'用户组名称','rules'=>'用户组拥有的规则id,多个,号隔开'),
* ...)
*/
public function getGroups($uid) {
static $groups = array();
if (isset($groups[$uid]))
return $groups[$uid];
$user_base = M()->table($this->_config['AUTH_GROUP_ACCESS'])->where("uid = {$uid}")->field('uid,group_id')->find();
$user_rule= SM("auth_group","sys_")->where("id = {$user_base['group_id']} and status = 1")->field('title,rules')->find();
if(empty($user_base) || empty($user_rule)){
return [];
}
$user_groups = [array_merge($user_base,$user_rule)];
$groups[$uid]=$user_groups?:array();
return $groups[$uid];
}
/**
* 获得权限列表
* @param integer $uid 用户id
* @param integer $type
*/
protected function getAuthList($uid,$type) {
static $_authList = array(); //保存用户验证通过的权限列表
$t = implode(',',(array)$type);
if (isset($_authList[$uid.$t])) {
return $_authList[$uid.$t];
}
if( $this->_config['AUTH_TYPE']==2 && isset($_SESSION['_AUTH_LIST_'.$uid.$t])){
return $_SESSION['_AUTH_LIST_'.$uid.$t];
}
//读取用户所属用户组
$groups = $this->getGroups($uid);
$ids = array();//保存用户所属用户组设置的所有权限规则id
foreach ($groups as $g) {
$ids = array_merge($ids, explode(',', trim($g['rules'], ',')));
}
$ids = array_unique($ids);
if (empty($ids)) {
$_authList[$uid.$t] = array();
return array();
}
$map=array(
'id'=>array('in',$ids),
'type'=>$type,
'status'=>1,
);
//读取用户组所有权限规则
$rules = M()->table($this->_config['AUTH_RULE'])->where($map)->field('condition,name')->select();
//循环规则,判断结果。
$authList = array(); //
foreach ($rules as $rule) {
if (!empty($rule['condition'])) { //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\']', $rule['condition']);
//dump($command);//debug
@(eval('$condition=(' . $command . ');'));
if ($condition) {
$authList[] = strtolower($rule['name']);
}
} else {
//只要存在就记录
$authList[] = strtolower($rule['name']);
}
}
$_authList[$uid.$t] = $authList;
if($this->_config['AUTH_TYPE']==2){
//规则列表结果保存到session
$_SESSION['_AUTH_LIST_'.$uid.$t]=$authList;
}
return array_unique($authList);
}
/**
* 获得用户资料,根据自己的情况读取数据库
*/
protected function getUserInfo($uid) {
static $userinfo=array();
if(!isset($userinfo[$uid])){
$userinfo[$uid]=M()->where(array('uid'=>$uid))->table($this->_config['AUTH_USER'])->find();
}
return $userinfo[$uid];
}
}