| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265 | <?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                $nums = 0;                $condition = str_replace(['&&', '||'], "\r\n", $rule['condition']);                $condition = preg_replace('/\{(\w*?)\}/', '\\1', $condition);                $conditionArr = explode("\r\n", $condition);                foreach ($conditionArr as $index => $item) {                    preg_match("/^(\w+)\s?([\>\<\=]+)\s?(.*)$/", trim($item), $matches);                    if ($matches && isset($user[$matches[1]]) && version_compare($user[$matches[1]], $matches[3], $matches[2])) {                        $nums++;                    }                }                if ($conditionArr && ((stripos($rule['condition'], "||") !== false && $nums > 0) || count($conditionArr) == $nums)) {                    $rulelist[$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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