如何在PHP微服务中实现分布式安全和防护功能

composer require firebase/php-jwt

use FirebaseJWTJWT;

function generateJWT($userId) {
    $payload = array(
        "userId" => $userId,
        "iat" => time(),
        "exp" => time() + (60*60) // 设置令牌过期时间为1小时
    );
    $jwt = JWT::encode($payload, "your-secret-key");
    return $jwt;
}

use FirebaseJWTJWT;

function verifyJWT($jwt) {
    try {
        $decoded = JWT::decode($jwt, "your-secret-key", array('HS256'));
        return $decoded->userId;
    } catch (Exception $e) {
        // 验证失败，处理异常
        return false;
    }
}

// 省略认证逻辑，假设用户已通过身份验证
$authorizationCode = generateAuthorizationCode();
storeAuthorizationCode($authorizationCode, $userId, $redirectUri);

// 返回授权码给客户端
return $authorizationCode;

function getAccessToken($authorizationCode) {
    $params = array(
        "grant_type" => "authorization_code",
        "code" => $authorizationCode,
        "client_id" => "your-client-id",
        "client_secret" => "your-client-secret",
        "redirect_uri" => "https://your-redirect-uri"
    );

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, "https://auth-server/token");
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($params));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    $response = curl_exec($ch);
    curl_close($ch);

    $accessToken = json_decode($response)->access_token;
    return $accessToken;
}