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<?php
namespace App\Common;
use Illuminate\Support\Facades\DB;
class Token
{
const TYPE_APP = 0;
const TYPE_ADMIN = 1;
const TYPE_WEIXIN = 2;
const TYPE_WAP = 3;
const TYPE_PC = 4;
// 已验证的type
public static $type;
// 验证为token时的uid
public static $uid;
// 验证为sign时的app.id
public static $app;
// 已验证的data
public static $data = array();
/**
* 验证token
*
* @param $token
*
* @return bool
*/
public static function checkToken($token)
{
$token = DB::table('token')->where('token', $token)->first();
if ($token)
{
self::$type = $token->type;
self::$uid = $token->uid;
self::$data = $token->data ? json_decode($token->data, true) : array();
}
return $token ? true : false;
}
/**
* 验证sign,
* sign生成方式:md5(app_key + app_secret + time)
* 必传参数:app_key, sign, sign_time
*
* @param $appKey
* @param $signTime
* @param $sign
*
* @return bool
*/
public static function checkSign($appKey, $signTime, $sign)
{
if (!$appRes = DB::table('appsign')->where('app_key', $appKey)->first())
{
return false;
}
//验证sign
$newSign = md5($appKey . $appRes->app_secret . $signTime);
if ($sign == $newSign)
{
self::$type = self::TYPE_ADMIN;
self::$app = $appRes;
return true;
}
return false;
}
/**
* 生成token
*
* @param $type
* @param $uid
* @param $data
*
* @return string
*/
public static function getToken($type, $uid, $data = array())
{
//支持多账号登录
if ($token = DB::table('token')->where(array('type' => $type, 'uid' => $uid))->orderBy('id', 'desc')->first())
{
if($data == $token->data && strtotime($token->expired_at)>time())
{
return array('access_token'=>$token->token,'expired_at'=>$token->expired_at);
}
}
//生成新token
$token = md5($type . '-' . $uid . '-' . microtime() . rand(0, 9999));
$expired_at = date("Y-m-d H:i:s",(time()+3600*24*30)); //token 30天过期
DB::table('token')->insert(array(
'token' => $token,
'type' => $type,
'uid' => $uid,
'data' => $data ? json_encode($data) : '',
'expired_at' => $expired_at
));
return array('access_token'=>$token,'expired_at'=>$expired_at,'uid'=>$uid,'type'=>$type);
}
}