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<?php
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/**
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* Autoloader Class
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*
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* PHP Version 7
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*
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* @file CAS/Autoload.php
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* @category Authentication
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* @package SimpleCAS
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* @author Brett Bieber <brett.bieber@gmail.com>
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* @copyright 2008 Regents of the University of Nebraska
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* @license http://www1.unl.edu/wdn/wiki/Software_License BSD License
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* @link http://code.google.com/p/simplecas/
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**/
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/**
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* Autoload a class
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*
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* @param string $class Classname to load
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*
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* @return bool
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*/
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function CAS_autoload($class)
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{
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// Static to hold the Include Path to CAS
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static $include_path;
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// Check only for CAS classes
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if (substr($class, 0, 4) !== 'CAS_' && substr($class, 0, 7) !== 'PhpCas\\') {
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return false;
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}
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// Setup the include path if it's not already set from a previous call
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if (empty($include_path)) {
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$include_path = array(dirname(__DIR__));
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}
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// Declare local variable to store the expected full path to the file
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foreach ($include_path as $path) {
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$class_path = str_replace('_', DIRECTORY_SEPARATOR, $class);
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// PhpCas namespace mapping
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if (substr($class_path, 0, 7) === 'PhpCas\\') {
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$class_path = 'CAS' . DIRECTORY_SEPARATOR . substr($class_path, 7);
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}
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$file_path = $path . DIRECTORY_SEPARATOR . $class_path . '.php';
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$fp = @fopen($file_path, 'r', true);
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if ($fp) {
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fclose($fp);
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include $file_path;
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if (!class_exists($class, false) && !interface_exists($class, false)) {
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die(
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new Exception(
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'Class ' . $class . ' was not present in ' .
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$file_path .
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' [CAS_autoload]'
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)
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);
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}
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return true;
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}
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}
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$e = new Exception(
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'Class ' . $class . ' could not be loaded from ' .
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$file_path . ', file does not exist (Path="'
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. implode(':', $include_path) .'") [CAS_autoload]'
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);
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$trace = $e->getTrace();
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if (isset($trace[2]) && isset($trace[2]['function'])
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&& in_array($trace[2]['function'], array('class_exists', 'interface_exists', 'trait_exists'))
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) {
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return false;
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}
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if (isset($trace[1]) && isset($trace[1]['function'])
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&& in_array($trace[1]['function'], array('class_exists', 'interface_exists', 'trait_exists'))
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) {
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return false;
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}
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die ((string) $e);
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}
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// Set up autoload if not already configured by composer.
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if (!class_exists('CAS_Client'))
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{
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trigger_error('phpCAS autoloader is deprecated. Install phpCAS using composer instead.', E_USER_DEPRECATED);
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spl_autoload_register('CAS_autoload');
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if (function_exists('__autoload')
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&& !in_array('__autoload', spl_autoload_functions())
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) {
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// __autoload() was being used, but now would be ignored, add
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// it to the autoload stack
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spl_autoload_register('__autoload');
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}
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}
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