namespace app\api\controller;

use think\Request;

class Api extends \think\Controller

{

public function __construct(Request $request)

{

if ($request->Controller() !== 'Api') {

$token = isset($request->post(false)['token'])?$request->post(false)['token']:'';

// 实例化Redis

$redis = new \Redis();

$redis -> connect('localhost',6379);

$redis -> auth('8G66336951a.');

if (!$redis -> get($token)) {

$data = [ 'info' => '信息为空', "status"=> 1 ];

echo json_encode($data);

exit;

}

}

}

/**

* 通过传入账号密码交换token

* @param string $user 账号

* @param string $password 密码

* @return string token

*/

public function token(Request $request)

{

# 接收post数据

$post = $request->post(false);

# 判断

if (!isset($post['user']) || !isset($post['password'])) {

$data = [ 'info' => '未指定账户密码', "status"=> 1 ];

return json($data);

}

$user = $post['user'];

$password = $post['password'];

if ($user=='root' && $password=='123456') {

// 实例化Redis

$redis = new \Redis();

$redis -> connect('localhost',6379);

$redis -> auth('8G66336951a.');

// 使用uuid生成唯一秘钥写入redis中，并设置30分钟后过期

$hash = password_hash($this->uniqidReal(),PASSWORD_DEFAULT);

if ($redis -> set($hash,$user) && $redis -> setTimeout($hash, 60 )) {

$data = [ 'info' => $hash, "status"=> 0 ];

}else{

$data = [ 'info' => '系统错误', "status"=> 1 ];

}

return json($data);

// echo json_encode($data);

} else {

$data = [ 'info' => '验证失败', "status"=> 1 ];

return json($data);

}

}

/**

* 生成唯一的uuid值

* @param integer $lenght 生成的uuid长度

* @return

*/

public function uniqidReal($lenght = 13)

{

if (function_exists("random_bytes")) {

$bytes = random_bytes(ceil($lenght / 2));

} elseif (function_exists("openssl_random_pseudo_bytes")) {

$bytes = openssl_random_pseudo_bytes(ceil($lenght / 2));

} else {

throw new Exception("no cryptographically secure random function available");

}

return substr(bin2hex($bytes), 0, $lenght);

}

}