<?php
/**
 * This file is the Framework constants bootstrap. It will prepare some basic common constants.
 *
 * It takes care of:
 *  - Including _ss_environment.php
 *  - Normalisation of $_SERVER values
 *  - Initialisation of necessary constants (mostly paths)
 *
 * Initialized constants:
 * - BASE_URL: Full URL to the webroot, e.g. "http://my-host.com/my-webroot" (no trailing slash).
 * - BASE_PATH: Absolute path to the webroot, e.g. "/var/www/my-webroot" (no trailing slash).
 *   See Director::baseFolder(). Can be overwritten by Director::setBaseFolder().
 * - TEMP_FOLDER: Absolute path to temporary folder, used for manifest and template caches. Example: "/var/tmp"
 *   See getTempFolder(). No trailing slash.
 * - MODULES_DIR: Not used at the moment
 * - MODULES_PATH: Not used at the moment
 * - THEMES_DIR: Path relative to webroot, e.g. "themes"
 * - THEMES_PATH: Absolute filepath, e.g. "/var/www/my-webroot/themes"
 * - FRAMEWORK_DIR: Path relative to webroot, e.g. "framework"
 * - FRAMEWORK_PATH:Absolute filepath, e.g. "/var/www/my-webroot/framework"
 * - FRAMEWORK_ADMIN_DIR: Path relative to webroot, e.g. "framework/admin"
 * - FRAMEWORK_ADMIN_PATH: Absolute filepath, e.g. "/var/www/my-webroot/framework/admin"
 * - THIRDPARTY_DIR: Path relative to webroot, e.g. "framework/thirdparty"
 * - THIRDPARTY_PATH: Absolute filepath, e.g. "/var/www/my-webroot/framework/thirdparty"
 *
 * @package framework
 * @subpackage core
 */

///////////////////////////////////////////////////////////////////////////////
// ENVIRONMENT CONFIG

/**
 * Include _ss_environment.php files
 */
//define the name of the environment file
$envFile = '_ss_environment.php';
//define the dir to start scanning from (have to add the trailing slash)
$dir = '.';
//check this dir and every parent dir (until we hit the base of the drive)
do {
	$dir = realpath($dir) . '/';
	//if the file exists, then we include it, set relevant vars and break out
	if (file_exists($dir . $envFile)) {
		define('SS_ENVIRONMENT_FILE', $dir . $envFile);
		include_once(SS_ENVIRONMENT_FILE);
		break;
	}
//here we need to check that the real path of the last dir and the next one are
// not the same, if they are, we have hit the root of the drive
} while (realpath($dir) != realpath($dir .= '../'));

///////////////////////////////////////////////////////////////////////////////
// GLOBALS AND DEFINE SETTING

/**
 * A blank HTTP_HOST value is used to detect command-line execution.
 * We update the $_SERVER variable to contain data consistent with the rest of the application.
 */
if(!isset($_SERVER['HTTP_HOST'])) {
	// HTTP_HOST, REQUEST_PORT, SCRIPT_NAME, and PHP_SELF
	if(isset($_FILE_TO_URL_MAPPING)) {
		$fullPath = $testPath = realpath($_SERVER['SCRIPT_FILENAME']);
		while($testPath && $testPath != '/' && !preg_match('/^[A-Z]:\\\\$/', $testPath)) {
			if(isset($_FILE_TO_URL_MAPPING[$testPath])) {
				$url = $_FILE_TO_URL_MAPPING[$testPath]
					. str_replace(DIRECTORY_SEPARATOR, '/', substr($fullPath,strlen($testPath)));

				$components = parse_url($url);
				$_SERVER['HTTP_HOST'] = $components['host'];
				if(!empty($components['port'])) $_SERVER['HTTP_HOST'] .= ':' . $components['port'];
				$_SERVER['SCRIPT_NAME'] = $_SERVER['PHP_SELF'] = $components['path'];
				if(!empty($components['port'])) $_SERVER['REQUEST_PORT'] = $components['port'];
				break;
			}
			$testPath = dirname($testPath);
		}
	}

	// Everything else
	$serverDefaults = array(
		'SERVER_PROTOCOL' => 'HTTP/1.1',
		'HTTP_ACCEPT' => 'text/plain;q=0.5',
		'HTTP_ACCEPT_LANGUAGE' => '*;q=0.5',
		'HTTP_ACCEPT_ENCODING' => '',
		'HTTP_ACCEPT_CHARSET' => 'ISO-8859-1;q=0.5',
		'SERVER_SIGNATURE' => 'Command-line PHP/' . phpversion(),
		'SERVER_SOFTWARE' => 'PHP/' . phpversion(),
		'SERVER_ADDR' => '127.0.0.1',
		'REMOTE_ADDR' => '127.0.0.1',
		'REQUEST_METHOD' => 'GET',
		'HTTP_USER_AGENT' => 'CLI',
	);

	$_SERVER = array_merge($serverDefaults, $_SERVER);

	/**
	 * If we have an HTTP_HOST value, then we're being called from the webserver and there are some things that
	 * need checking
	 */
} else {
	/**
	 * Fix magic quotes setting
	 */
	if (function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc()) {
		if($_REQUEST) stripslashes_recursively($_REQUEST);
		if($_GET) stripslashes_recursively($_GET);
		if($_POST) stripslashes_recursively($_POST);
		if($_COOKIE) stripslashes_recursively($_COOKIE);
	}

	/**
	 * Fix HTTP_HOST from reverse proxies
	 */
	if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) {
		// Get the first host, in case there's multiple separated through commas
		$_SERVER['HTTP_HOST'] = strtok($_SERVER['HTTP_X_FORWARDED_HOST'], ',');
	}
}

/**
 * Define system paths
 */
if(!defined('BASE_PATH')) {
	// Assuming that this file is framework/core/Core.php we can then determine the base path
	$candidateBasePath = rtrim(dirname(dirname(dirname(__FILE__))), DIRECTORY_SEPARATOR);
	// We can't have an empty BASE_PATH.  Making it / means that double-slashes occur in places but that's benign.
	// This likely only happens on chrooted environemnts
	if($candidateBasePath == '') $candidateBasePath = DIRECTORY_SEPARATOR;
	define('BASE_PATH', $candidateBasePath);
}
if(!defined('BASE_URL')) {
	// Determine the base URL by comparing SCRIPT_NAME to SCRIPT_FILENAME and getting common elements
	$path = realpath($_SERVER['SCRIPT_FILENAME']);
	if(substr($path, 0, strlen(BASE_PATH)) == BASE_PATH) {
		$urlSegmentToRemove = substr($path, strlen(BASE_PATH));
		if(substr($_SERVER['SCRIPT_NAME'], -strlen($urlSegmentToRemove)) == $urlSegmentToRemove) {
			$baseURL = substr($_SERVER['SCRIPT_NAME'], 0, -strlen($urlSegmentToRemove));
			define('BASE_URL', rtrim($baseURL, DIRECTORY_SEPARATOR));
		}
	}

	// If that didn't work, failover to the old syntax.  Hopefully this isn't necessary, and maybe
	// if can be phased out?
	if(!defined('BASE_URL')) {
		$dir = (strpos($_SERVER['SCRIPT_NAME'], 'index.php') !== false)
			? dirname($_SERVER['SCRIPT_NAME'])
			: dirname(dirname($_SERVER['SCRIPT_NAME']));
		define('BASE_URL', rtrim($dir, DIRECTORY_SEPARATOR));
	}
}
define('MODULES_DIR', 'modules');
define('MODULES_PATH', BASE_PATH . '/' . MODULES_DIR);
define('THEMES_DIR', 'themes');
define('THEMES_PATH', BASE_PATH . '/' . THEMES_DIR);
// Relies on this being in a subdir of the framework.
// If it isn't, or is symlinked to a folder with a different name, you must define FRAMEWORK_DIR
if(!defined('FRAMEWORK_DIR')) {
	define('FRAMEWORK_DIR', basename(dirname(dirname(__FILE__))));
}
define('FRAMEWORK_PATH', BASE_PATH . '/' . FRAMEWORK_DIR);
define('FRAMEWORK_ADMIN_DIR', FRAMEWORK_DIR . '/admin');
define('FRAMEWORK_ADMIN_PATH', BASE_PATH . '/' . FRAMEWORK_ADMIN_DIR);

// These are all deprecated. Use the FRAMEWORK_ versions instead.
define('SAPPHIRE_DIR', FRAMEWORK_DIR);
define('SAPPHIRE_PATH', FRAMEWORK_PATH);
define('SAPPHIRE_ADMIN_DIR', FRAMEWORK_ADMIN_DIR);
define('SAPPHIRE_ADMIN_PATH', FRAMEWORK_ADMIN_PATH);

define('THIRDPARTY_DIR', FRAMEWORK_DIR . '/thirdparty');
define('THIRDPARTY_PATH', BASE_PATH . '/' . THIRDPARTY_DIR);
define('ASSETS_DIR', 'assets');
define('ASSETS_PATH', BASE_PATH . '/' . ASSETS_DIR);

///////////////////////////////////////////////////////////////////////////////
// INCLUDES

if(defined('CUSTOM_INCLUDE_PATH')) {
	$includePath = '.' . PATH_SEPARATOR . CUSTOM_INCLUDE_PATH . PATH_SEPARATOR
		. FRAMEWORK_PATH . PATH_SEPARATOR
		. FRAMEWORK_PATH . '/parsers' . PATH_SEPARATOR
		. THIRDPARTY_PATH . PATH_SEPARATOR
		. get_include_path();
} else {
	$includePath = '.' . PATH_SEPARATOR . FRAMEWORK_PATH . PATH_SEPARATOR
		. FRAMEWORK_PATH . '/parsers' . PATH_SEPARATOR
		. THIRDPARTY_PATH . PATH_SEPARATOR
		. get_include_path();
}

set_include_path($includePath);

/**
 * Define the temporary folder if it wasn't defined yet
 */
require_once 'core/TempPath.php';

if(!defined('TEMP_FOLDER')) {
	define('TEMP_FOLDER', getTempFolder(BASE_PATH));
}