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》

<?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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