91 lines
2.2 KiB
PHP
91 lines
2.2 KiB
PHP
<?php
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namespace App\Helpers;
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use DateTimeImmutable;
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class TokenHelper
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{
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private static $secret = 'ufutx_love_util';
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/**
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* 生成 token
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* @param int $userId 用户ID
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* @param int $expiresIn 过期时间（分钟）
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* @return string
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*/
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public static function generate($userId, $expiresIn = 60)
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{
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$now = time();
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$expires = $now + ($expiresIn * 60);
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$payload = [
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'user_id' => $userId,
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'iat' => $now,
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'exp' => $expires
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];
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// 使用更简单的方式：base64 编码（避免版本兼容问题）
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$encoded = base64_encode(json_encode($payload));
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// 添加签名
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$signature = hash_hmac('sha256', $encoded, self::$secret);
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return $encoded . '.' . $signature;
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}
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/**
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* 验证 token
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* @return array|false
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*/
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public static function verify($tokenString)
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{
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try {
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$parts = explode('.', $tokenString);
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if (count($parts) != 2) {
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return false;
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}
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list($payloadEncoded, $signature) = $parts;
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// 验证签名
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$expectedSignature = hash_hmac('sha256', $payloadEncoded, self::$secret);
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if (!hash_equals($expectedSignature, $signature)) {
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return false;
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}
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// 解码 payload
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$payload = json_decode(base64_decode($payloadEncoded), true);
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if (!$payload) {
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return false;
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}
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// 检查是否过期
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$now = time();
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if (isset($payload['exp']) && $payload['exp'] < $now) {
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return false;
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}
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return [
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'user_id' => $payload['user_id'],
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'expires_at' => $payload['exp']
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];
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} catch (\Exception $e) {
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return false;
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}
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}
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/**
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* 刷新 token
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*/
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public static function refresh($oldToken, $expiresIn = 60)
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{
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$payload = self::verify($oldToken);
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if (!$payload) {
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return false;
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}
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return self::generate($payload['user_id'], $expiresIn);
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}
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} |