Design practice of SSO single sign-on system based on Swoole

With the rapid development of the Internet, more and more websites and applications need to implement user single sign-on (SSO) functions to provide a more convenient and secure user experience. In this context, the SSO single sign-on system based on Swoole has gradually become a hot topic in the industry. This article will introduce how to design and implement a SSO single sign-on system based on Swoole.

1. SSO single sign-on system design ideas

The purpose of the SSO single sign-on system is to enable users to access other systems after logging in to one system without having to log in manually again. . Therefore, we need to design a central authentication service (CAS). When users access the system, they are first authenticated by CAS. After passing the authentication, CAS generates a Token and returns it to the user. When the user brings the Token to access other systems, the other systems verify the validity of the Token through CAS and then allow the user to access.

Based on this idea, we designed the system into the following modules:

1. Login Module: handles the user's login request and requests CAS to verify the legality of the user's identity If it is legal, a Token will be generated and returned to the user.
2. Validation Module: Responsible for verifying the validity of Tokens passed by other systems.
3. Authentication Center Module (CAS Module): Processes the user's login verification request, saves the user information, generates a Token and returns the Token to the user.
4. Authorization Module: Determine whether the user has permission to access other systems based on the Token passed by the user.
5. Gateway Module: plays the role of the entrance and exit of the entire system, and is responsible for forwarding user requests and responses.

2. Use Swoole to implement SSO single sign-on system

Swoole is a high-performance, asynchronous, multi-threaded network communication framework, which is very suitable for developing high-concurrency network applications. . We can use Swoole to implement SSO single sign-on system.

1. Login module

We use Swoole's Http Server in the login module to monitor the user's login request. The code example is as follows:

$http = new SwooleHttpServer("0.0.0.0", 9501);
$http->on('request', function ($request, $response) {
    $username = $request->post['username'];
    $password = $request->post['password'];
    //验证用户名和密码的合法性
    //如果合法，则向CAS发送验证请求
    //验证通过，则生成一个Token并返回给用户
});
$http->start();

2. Verification module

In the verification module, we also use Swoole's Http Server to monitor Token verification requests passed by other systems. The code example is as follows:

$http = new SwooleHttpServer("0.0.0.0", 9502);
$http->on('request', function ($request, $response) {
    $token = $request->get['token'];
    //验证Token是否合法
    //验证通过，则返回用户信息给其他系统
});
$http->start();

3. Certification Center Module

In the authentication center module, we also use Swoole's Http Server to monitor the user's login request. The code example is as follows:

$http = new SwooleHttpServer("0.0.0.0", 9503);
$http->on('request', function ($request, $response) {
    $username = $request->post['username'];
    $password = $request->post['password'];
    //验证用户名和密码的合法性
    //如果合法，则生成一个Token
    //将用户信息和Token保存到CAS数据库中
    //将Token返回给用户
});
$http->start();

4. Authorization module

In the authorization module, we also use Swoole's Http Server to monitor authorization requests passed by other systems. The code example is as follows:

$http = new SwooleHttpServer("0.0.0.0", 9504);
$http->on('request', function ($request, $response) {
    $token = $request->get['token'];
    //验证Token是否合法
    //验证通过，则判断用户是否有访问此系统的权限
    //如果有，则返回该系统的数据给用户
});
$http->start();

5. Gateway module

In In the gateway module, we use Swoole's Http Client to forward user requests and responses. The code example is as follows:

$client = new SwooleHttpClient('127.0.0.1', 9501);
$client->post('/login', array('username' => 'user1', 'password' => 'password1'), function ($client) {
    $token = $client->body;
    //将Token保存在Cookie中
    //将Token和用户信息发送给其他系统
    //接收其他系统的响应并返回给用户
});

3. Summary

This article introduces how to design and implement a SSO single sign-on based on Swoole system. The SSO single sign-on system can effectively improve user experience and system security, allowing users to access various systems more conveniently and quickly. The SSO single sign-on system implemented based on Swoole has the characteristics of high performance, high concurrency, and asynchronousness, and is suitable for high-concurrency network application development.

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