<?php

/* Remove magic quotes. */
if(get_magic_quotes_gpc()) {
	foreach(array('_GET', '_POST', '_COOKIE', '_REQUEST') as $a) {
		if (isset($$a) && is_array($$a)) {
			foreach($$a as &$v) {
				/* We don't use array-parameters anywhere.
				 * Ignore any that may appear.
				 */
				if(is_array($v)) {
					continue;
				}
				/* Unescape the string. */
				$v = stripslashes($v);
			}
		}
	}
}
if (get_magic_quotes_runtime()) {
	set_magic_quotes_runtime(FALSE);
}


/* Initialize the autoloader. */
require_once(dirname(dirname(__FILE__)) . '/lib/_autoload.php');

/* Enable assertion handler for all pages. */
SimpleSAML_Error_Assertion::installHandler();

/* Show error page on unhandled exceptions. */
function SimpleSAML_exception_handler(Exception $exception) {

	if ($exception instanceof SimpleSAML_Error_Error) {
		$exception->show();
	} else {
		$e = new SimpleSAML_Error_Error('UNHANDLEDEXCEPTION', $exception);
		$e->show();
	}
}
set_exception_handler('SimpleSAML_exception_handler');

/* Log full backtrace on errors and warnings. */
function SimpleSAML_error_handler($errno, $errstr, $errfile = NULL, $errline = 0, $errcontext = NULL) {

	if (!class_exists('SimpleSAML_Logger')) {
		/* We are probably logging a deprecation-warning during parsing.
		 * Unfortunately, the autoloader is disabled at this point,
		 * so we should stop here.
		 *
		 * See PHP bug: https://bugs.php.net/bug.php?id=47987
		 */
		return FALSE;
	}


	if ($errno & SimpleSAML_Utilities::$logMask || ! ($errno & error_reporting() )) {
		/* Masked error. */
		return FALSE;
	}

	static $limit = 5;
	$limit -= 1;
	if ($limit < 0) {
		/* We have reached the limit in the number of backtraces we will log. */
		return FALSE;
	}

	/* Show an error with a full backtrace. */
	$e = new SimpleSAML_Error_Exception('Error ' . $errno . ' - ' . $errstr);
	$e->logError();

	/* Resume normal error processing. */
	return FALSE;
}
set_error_handler('SimpleSAML_error_handler');

/**
 * Class which should print a warning every time a reference to $SIMPLESAML_INCPREFIX is made.
 */
class SimpleSAML_IncPrefixWarn {

	/**
	 * Print a warning, as a call to this function means that $SIMPLESAML_INCPREFIX is referenced.
	 *
	 * @return A blank string.
	 */
	function __toString() {
		$backtrace = debug_backtrace();
		$where = $backtrace[0]['file'] . ':' . $backtrace[0]['line'];
		error_log('Deprecated $SIMPLESAML_INCPREFIX still in use at ' . $where .
			'. The simpleSAMLphp library now uses an autoloader.');
		return '';
	}
}
/* Set the $SIMPLESAML_INCPREFIX to a reference to the class. */
$SIMPLESAML_INCPREFIX = new SimpleSAML_IncPrefixWarn();


$configdir = dirname(dirname(__FILE__)) . '/config';
if (!file_exists($configdir . '/config.php')) {
	header('Content-Type: text/plain');
	echo("You have not yet created the simpleSAMLphp configuration files.\n");
	echo("See: https://simplesamlphp.org/docs/devel/simplesamlphp-install-repo\n");
	exit(1);
}

/* Set the timezone. */
SimpleSAML_Utilities::initTimezone();
/* Disable XML external entity loading explicitly. */
libxml_disable_entity_loader();