Файл: framework/main.php
Строк: 225
<?php
/************************************************************************************
************************************************************************************
** **
** If you can read this text in your browser then you don't have PHP installed. **
** Please install PHP 5.3.3 or higher, preferably PHP 5.3.4+. **
** **
************************************************************************************
************************************************************************************/
/**
* @package framework
* @subpackage core
*/
if (version_compare(phpversion(), '5.3.3', '<')) {
header("HTTP/1.1 500 Server Error");
echo str_replace('$PHPVersion', phpversion(), file_get_contents("dev/install/php5-required.html"));
die();
}
/**
* Main file that handles every page request.
*
* The main.php does a number of set-up activities for the request.
*
* - Includes the first one of the following files that it finds: (root)/_ss_environment.php,
* (root)/../_ss_environment.php, or (root)/../../_ss_environment.php
* - Gets an up-to-date manifest from {@link ManifestBuilder}
* - Sets up error handlers with {@link Debug::loadErrorHandlers()}
* - Calls {@link DB::connect()}, passing it the global variable $databaseConfig that should
* be defined in an _config.php
* - Sets up the default director rules using {@link Director::$rules}
*
* After that, it calls {@link Director::direct()}, which is responsible for doing most of the
* real work.
*
* CONFIGURING THE WEBSERVER
*
* To use SilverStripe, every request that doesn't point directly to a file should be rewritten to
* framework/main.php?url=(url). For example, http://www.example.com/about-us/rss would be rewritten
* to http://www.example.com/framework/main.php?url=about-us/rss
*
* It's important that requests that point directly to a file aren't rewritten; otherwise, visitors
* won't be able to download any CSS, JS, image files, or other downloads.
*
* On Apache, RewriteEngine can be used to do this.
*
* @package framework
* @subpackage core
* @see Director::direct()
*/
/**
* Include the defines that set BASE_PATH, etc
*/
require_once('core/Constants.php');
// IIS will sometimes generate this.
if(!empty($_SERVER['HTTP_X_ORIGINAL_URL'])) {
$_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_ORIGINAL_URL'];
}
/**
* Figure out the request URL
*/
global $url;
// Helper to safely parse and load a querystring fragment
$parseQuery = function($query) {
parse_str($query, $_GET);
if ($_GET) $_REQUEST = array_merge((array)$_REQUEST, (array)$_GET);
};
// Apache rewrite rules and IIS use this
if (isset($_GET['url']) && php_sapi_name() !== 'cli-server') {
// Prevent injection of url= querystring argument by prioritising any leading url argument
if(isset($_SERVER['QUERY_STRING']) &&
preg_match('/^(?<url>url=[^&?]*)(?<query>.*[&?]url=.*)$/', $_SERVER['QUERY_STRING'], $results)
) {
$queryString = $results['query'].'&'.$results['url'];
$parseQuery($queryString);
}
$url = $_GET['url'];
// IIS includes get variables in url
$i = strpos($url, '?');
if($i !== false) {
$url = substr($url, 0, $i);
}
// Lighttpd and PHP 5.4's built-in webserver use this
} else {
$url = $_SERVER['REQUEST_URI'];
// Querystring args need to be explicitly parsed
if(strpos($url,'?') !== false) {
list($url, $query) = explode('?',$url,2);
$parseQuery($query);
}
// Pass back to the webserver for files that exist
if(php_sapi_name() === 'cli-server' && file_exists(BASE_PATH . $url) && is_file(BASE_PATH . $url)) {
return false;
}
}
// Remove base folders from the URL if webroot is hosted in a subfolder
if (substr(strtolower($url), 0, strlen(BASE_URL)) == strtolower(BASE_URL)) $url = substr($url, strlen(BASE_URL));
/**
* Include SilverStripe's core code
*/
require_once('core/startup/ErrorControlChain.php');
require_once('core/startup/ParameterConfirmationToken.php');
// Prepare tokens and execute chain
$reloadToken = ParameterConfirmationToken::prepare_tokens(array('isTest', 'isDev', 'flush'));
$chain = new ErrorControlChain();
$chain
->then(function($chain) use ($reloadToken) {
// If no redirection is necessary then we can disable error supression
if (!$reloadToken) $chain->setSuppression(false);
// Load in core
require_once('core/Core.php');
// Connect to database
require_once('model/DB.php');
global $databaseConfig;
if ($databaseConfig) DB::connect($databaseConfig);
// Check if a token is requesting a redirect
if (!$reloadToken) return;
// Otherwise, we start up the session if needed
if(!isset($_SESSION) && Session::request_contains_session_id()) {
Session::start();
}
// Next, check if we're in dev mode, or the database doesn't have any security data, or we are admin
if (Director::isDev() || !Security::database_is_ready() || Permission::check('ADMIN')) {
return $reloadToken->reloadWithToken();
}
// Fail and redirect the user to the login page
$loginPage = Director::absoluteURL(Config::inst()->get('Security', 'login_url'));
$loginPage .= "?BackURL=" . urlencode($_SERVER['REQUEST_URI']);
header('location: '.$loginPage, true, 302);
die;
})
// Finally if a token was requested but there was an error while figuring out if it's allowed, do it anyway
->thenIfErrored(function() use ($reloadToken){
if ($reloadToken) {
$reloadToken->reloadWithToken();
}
})
->execute();
global $databaseConfig;
// Redirect to the installer if no database is selected
if(!isset($databaseConfig) || !isset($databaseConfig['database']) || !$databaseConfig['database']) {
if(!file_exists(BASE_PATH . '/install.php')) {
header($_SERVER['SERVER_PROTOCOL'] . " 500 Server Error");
die('SilverStripe Framework requires a $databaseConfig defined.');
}
$s = (isset($_SERVER['SSL']) || (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off')) ? 's' : '';
$installURL = "http$s://" . $_SERVER['HTTP_HOST'] . BASE_URL . '/install.php';
// The above dirname() will equate to "" on Windows when installing directly from http://localhost (not using
// a sub-directory), this really messes things up in some browsers. Let's get rid of the backslashes
$installURL = str_replace('\', '', $installURL);
header("Location: $installURL");
die();
}
// Direct away - this is the "main" function, that hands control to the appropriate controller
DataModel::set_inst(new DataModel());
Director::direct($url, DataModel::inst());