thinkphp如何实现单点登录

一、前提：CAS服务器搭建完成

这个不是本次的重点，不多讲。传送门：https://blog.csdn.net/u013825231/article/details/79132399

二、下载phpCAS客户端

php客户端下载：https://github.com/apereo/phpCAS

php客户端配置的注意事项等内容：https://apereo.atlassian.net/wiki/spaces/CASC/pages/103252517/phpCAS

php客户端的要求：https://apereo.atlassian.net/wiki/spaces/CASC/pages/103252625/phpCAS+requirements

注意:php配置文件php.ini需要开启php_curl，找到 ;extension=php_curl.dll ,将该句前面的分号去掉即可,改为 extension=php_curl.dll

三、thinkphp5引入phpCAS类库

1.下载好的phpCAS客户端文件结构。

相关推荐：《ThinkPHP教程》

2. 把source文件夹复制到thinphp5下的extend文件夹下，并重命名为：phpCAS

3. config.php文件的配置

<?php
 
// The purpose of this central config file is configuring all examples
// in one place with minimal work for your working environment
// Just configure all the items in this config according to your environment
// and rename the file to config.php
 
$phpcas_path = 'phpCAS/';
 
///////////////////////////////////////
// Basic Config of the phpCAS client //
///////////////////////////////////////
$client_domain = 'localhost'; // 客户端 domain 
$client_path = 'afschool';
$client_secure = false;
$client_httpOnly = true;
$client_lifetime = 0;
 
// Full Hostname of your CAS Server 服务器主机
$cas_host = 'cas.example.com';
 
// Context of the CAS Server  
$cas_context = '/cas';
 
// Port of your CAS server. Normally for a https server it's 443
$cas_port = 443;
 
// Path to the ca chain that issued the cas server certificate
$cas_server_ca_cert_path = '/path/to/cachain.pem';
 
//////////////////////////////////////////
// Advanced Config for special purposes //
//////////////////////////////////////////
 
// The "real" hosts of clustered cas server that send SAML logout messages
// Assumes the cas server is load balanced across multiple hosts
$cas_real_hosts = array (
'cas-real-1.example.com',
'cas-real-2.example.com'
);
 
// Database config for PGT Storage
$db = 'pgsql:host=localhost;dbname=phpcas';
//$db = 'mysql:host=localhost;dbname=phpcas';
$db_user = 'phpcasuser';
$db_password = 'mysupersecretpass';
$db_table = 'phpcastabel';
 
///////////////////////////////////////////
// End Configuration -- Don't edit below //
///////////////////////////////////////////
 
// Generating the URLS for the local cas example services for proxy testing
if ( isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on'){
$curbase = 'https://'.$_SERVER['SERVER_NAME'];
}else{
$curbase = 'http://'.$_SERVER['SERVER_NAME'];
}
if ($_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443)
$curbase .= ':'.$_SERVER['SERVER_PORT'];
 
$curdir = dirname($_SERVER['REQUEST_URI'])."/";
 
 
// CAS client nodes for rebroadcasting pgtIou/pgtId and logoutRequest
$rebroadcast_node_1 = 'http://cas-client-1.example.com';
$rebroadcast_node_2 = 'http://cas-client-2.example.com';
 
// access to a single service
$serviceUrl = $curbase.$curdir.'example_service.php';
// access to a second service
$serviceUrl2 = $curbase.$curdir.'example_service_that_proxies.php';
 
$pgtBase = preg_quote(preg_replace('/^http:/', 'https:', $curbase.$curdir),'/');
$pgtUrlRegexp = '/^'.$pgtBase.'.*$/';
 
$cas_url = 'https://'.$cas_host;
if ($cas_port != '443')
{
$cas_url = $cas_url.':'.$cas_port;
}
$cas_url = $cas_url.$cas_context;
 
 
// Set the session-name to be unique to the current script so that the client script
// doesn't share its session with a proxied script.
// This is just useful when running the example code, but not normally.
session_name('session_for:'.preg_replace('/[^a-z0-9-]/i', '_', basename($_SERVER['SCRIPT_NAME'])));
?>

4. 因为本人请求单点登录的服务器是http认证的，不是https，需要修改CAS/client.php,将其中的https改为http（刚开始没有修改client.php这个文件，总是使用https认证，所以请求失败）

5. 把CAS类库文件夹的同级文件CAS.php，重命名为phpCAS.php

修改成

6. 登录的控制器方法为：

<?php
namespace app\index\controller;
use think\Db;
use think\Loader;
 
class Index extends \think\Controller
{
    public function login()
    {
// Example for a simple client
        // Load the settings from the central config file
        require './extend/config.php';
        // Loader::import('config.php',EXTEND_PATH);
        // Load the CAS lib
        //直接引入phpCAS扩展库下的类文件phpCAS.php
        Loader::import('phpCAS\phpCAS',EXTEND_PATH);        
        //直接引入库文件需要实例化类
        $phpCAS = new \phpCAS();
        // Uncomment to enable debugging
        $phpCAS->setDebug();
        
        // Initialize phpCAS
        $phpCAS->client(CAS_VERSION_2_0, $cas_host, $cas_port, $cas_context);
 
        // For quick testing you can disable SSL validation of the CAS server. 
        // THIS SETTING IS NOT RECOMMENDED FOR PRODUCTION. 
        // VALIDATING THE CAS SERVER IS CRUCIAL TO THE SECURITY OF THE CAS PROTOCOL! 
        $phpCAS->setNoCasServerValidation();
 
        //这里会检测服务器端的退出的通知，就能实现php和其他语言平台间同步登出了
        $phpCAS->handleLogoutRequests();
 
        //访问CAS的验证通过后，跳转到网页
        if($phpCAS->forceAuthentication()){ 
 
        echo "<script language=\"javascript\">parent.location.href='http://www.baidu.com';</script>";
 
        };
        
     }
}

最后访问这个登录的方法，完成单点登录的页面跳转！

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