权限管理是一个项目中必不可少的模块之一，常用的有RBAC、Auth等。本文就分享在TP5中通过Auth验证权限的实例，希望对大家有所帮助。
<?php
namespace think;
use think\Config;
use think\Session;
use think\Db;
/**
* 权限认证类
*/
//数据库
/*
-- ----------------------------
-- mt4_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 `mt4_auth_rule`;
CREATE TABLE `mt4_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;
-- ----------------------------
-- mt4_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 `mt4_auth_group`;
CREATE TABLE `mt4_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;
-- ----------------------------
-- mt4_auth_group_access 用户组明细表
-- uid:用户id，group_id：用户组id
-- ----------------------------
DROP TABLE IF EXISTS `mt4_auth_group_access`;
CREATE TABLE `mt4_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' => 2, // 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' => 'auth_admin' // 用户信息表
);
public function __construct() {
if (Config::get('auth_config')) {
$this->config = array_merge($this->config, Config::get('auth_config')); //可设置配置项 auth_config, 此配置项为数组。
}
}
/**
* 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 {
// $name = [$name];
// }
$name = strpos($name, ',') !== false ? explode(',', $name) : [$name];
}
$list = []; //保存验证通过的规则名
if ($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 false;
}
$diff = array_diff($name, $list);
if ($relation == 'and' and empty($diff)) {
return false;
}
return true;
}
/**
* 根据用户id获取用户组,返回值为数组
* @param uid int 用户id
* return array 用户所属的用户组 [
* ['uid'=>'用户id','group_id'=>'用户组id','title'=>'用户组名称','rules'=>'用户组拥有的规则id,多个,号隔开'),
* ...)
*/
public function getGroups($uid) {
static $groups = [];
if (isset($groups[$uid])) {
return $groups[$uid];
}
$user_groups = Db::view($this->config['auth_group_access'], 'uid,group_id')->view($this->config['auth_group'], 'title,rules', "{$this->config['auth_group_access']}.group_id={$this->config['auth_group']}.id")
->where(['uid' => $uid, 'status' => 1])->select();
$groups[$uid] = $user_groups ? $user_groups : [];
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 = []; //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 && Session::has('_auth_list_' . $uid . $t)) {
return Session::get('_auth_list_' . $uid . $t);
}
//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);
if (empty($ids)) {
$_authList[$uid . $t] = [];
return [];
}
$map = [
'id' => ['notin', $ids],
'type' => $type,
'status' => 1,
];
//读取用户组所有权限规则
$rules = Db::name($this->config['auth_rule'])->where($map)->field('condition,name')->select();
//循环规则，判断结果。
$authList = []; //
foreach ($rules as $rule) {
if (!empty($rule['condition'])) { //根据condition进行验证
$this->getUserInfo($uid); //获取用户信息,一维数组
$command = preg_replace('/\{(\w*?)\}/', '$user[\'\\1\']', $rule['condition']);
@(eval('$condition=(' . $command . ');'));
$condition && $authList[] = strtolower($rule['name']);
} else {
$authList[] = strtolower($rule['name']); //只要存在就记录
}
}
$_authList[$uid . $t] = $authList;
if ($this->config['auth_type'] == 2) {
$_SESSION['_auth_list_' . $uid . $t] = $authList; //规则列表结果保存到session
}
return array_unique($authList);
}
/**
* 获得用户资料,根据自己的情况读取数据库
*/
protected function getUserInfo($uid) {
static $userinfo = [];
if (!isset($userinfo[$uid])) {
$userinfo[$uid] = Db::name($this->config['auth_user'])->where(['uid' => $uid])->find();
}
return $userinfo[$uid];
}
}相关推荐：
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