CodeIgniter 的 CAS 身份验证库

我正在尝试在 CodeIgniter 应用程序中实现 CAS 身份验证，但我找不到当前是否有为其设置的库。我通过只包含类并添加一些肮脏的修复来进行管理，但如果有人知道合适的库，我认为这将是一个更干净的解决方案。

我一直在浏览这里以及谷歌上的一系列帖子，但似乎缺少我需要的东西。唯一相关的地方是一个帖子弗吉尼亚联邦大学图书馆但这不包括库下载链接。

感谢大家！

UPDATE:您可以在 Github 上找到该库的最新版本：https://github.com/eliasdorneles/code-igniter-cas-library

您还可以通过 Spark 安装：http://getsparks.org/packages/cas-auth-library/versions/HEAD/show

我已经启动了一个 CAS 库来简化 CodeIgniter 的 CAS 身份验证设置，该库依赖于现有的phpCAS。 要开始使用它，您只需将 phpCAS 安装在某个可访问的目录中，将库文件放入application/libraries/Cas.php并创建一个配置文件config/cas.php像这样：

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
$config['cas_server_url'] = 'https://yourserver.com/cas';
$config['phpcas_path'] = '/path/to/phpCAS-1.3.1';
$config['cas_disable_server_validation'] = TRUE;
// $config['cas_debug'] = TRUE; // <--  use this to enable phpCAS debug mode

然后，在您的控制器中您将能够执行以下操作：

function index() {
    $this->load->library('cas');
    $this->cas->force_auth();
    $user = $this->cas->user();
    echo "Hello, $user->userlogin!";
}

这是库文件（必须命名为Cas.php):

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

function cas_show_config_error(){
    show_error("CAS authentication is not properly configured.<br /><br />
    Please, check your configuration for the following file:
    <code>config/cas.php</code>
    The minimum configuration requires:
    <ul>
       <li><em>cas_server_url</em>: the <strong>URL</strong> of your CAS server</li>
       <li><em>phpcas_path</em>: path to a installation of
           <a href=\"https://wiki.jasig.org/display/CASC/phpCAS\">phpCAS library</a></li>
        <li>and one of <em>cas_disable_server_validation</em> and <em>cas_ca_cert_file</em>.</li>
    </ul>
    ");
}

class Cas {

    public function __construct(){
        if (!function_exists('curl_init')){
            show_error('<strong>ERROR:</strong> You need to install the PHP module <strong>curl</strong>
                to be able to use CAS authentication.');
        }
        $CI =& get_instance();
        $this->CI = $CI;
        $CI->config->load('cas');

        $this->phpcas_path = $CI->config->item('phpcas_path');
        $this->cas_server_url = $CI->config->item('cas_server_url');

        if (empty($this->phpcas_path) 
            or filter_var($this->cas_server_url, FILTER_VALIDATE_URL) === FALSE) {
            cas_show_config_error();
        }
        $cas_lib_file = $this->phpcas_path . '/CAS.php';
        if (!file_exists($cas_lib_file)){
            show_error("Could not find file: <code>" . $cas_lib_file. "</code>");
        }
        require_once $cas_lib_file;

        if ($CI->config->item('cas_debug')) {
            phpCAS::setDebug();
        }

        // init CAS client
        $defaults = array('path' => '', 'port' => 443);
        $cas_url = array_merge($defaults, parse_url($this->cas_server_url));

        phpCAS::client(CAS_VERSION_2_0, $cas_url['host'],
            $cas_url['port'], $cas_url['path']);

        // configures SSL behavior
        if ($CI->config->item('cas_disable_server_validation')){
            phpCAS::setNoCasServerValidation();
        } else {
            $ca_cert_file = $CI->config->item('cas_server_ca_cert');
            if (empty($ca_cert_file)) {
                cas_show_config_error();
            }
            phpCAS::setCasServerCACert($ca_cert_file);
        }
    }

    /**
      * Trigger CAS authentication if user is not yet authenticated.
      */
    public function force_auth()
    {
        phpCAS::forceAuthentication();
    }

    /**
     *  Return an object with userlogin and attributes.
     *  Shows aerror if called before authentication.
     */
    public function user()
    {
        if (phpCAS::isAuthenticated()) {
            $userlogin = phpCAS::getUser();
            $attributes = phpCAS::getAttributes();
            echo "has attributes? ";
            var_dump(phpCAS::hasAttributes());
            return (object) array('userlogin' => $userlogin,
                'attributes' => $attributes);
        } else {
            show_error("User was not authenticated yet.");
        }
    }

    /**
     *  Logout and redirect to the main site URL,
     *  or to the URL passed as argument
     */
    public function logout($url = '')
    {
        if (empty($url)) {
            $this->CI->load->helper('url');
            $url = base_url();
        }
        phpCAS::logoutWithRedirectService($url);
    }
}