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silverstripe-framework
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silverstripe-framework/core/Core.php

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PHP
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<?php
/**
* This file is the Framework bootstrap. It will get your environment ready to call Director::direct().
*
* It takes care of:
* - Including _ss_environment.php
* - Normalisation of $_SERVER values
* - Initialisation of necessary constants (mostly paths)
* - Checking of PHP memory limit
* - Including all the files needed to get the manifest built
* - Building and including the manifest
*
* 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"
*
* @todo This file currently contains a lot of bits and pieces, and its various responsibilities should probably be
* moved into different subsystems.
* @todo A lot of this stuff is very order-independent; for example, the require_once calls have to happen after the defines.'
* This could be decoupled.
* @package framework
* @subpackage core
*/
///////////////////////////////////////////////////////////////////////////////
// ENVIRONMENT CONFIG
// ALL errors are reported, including E_STRICT by default *unless* the site is in
// live mode, where reporting is limited to fatal errors and warnings (see later in this file)
error_reporting(E_ALL | E_STRICT);
/**
* Include _ss_environment.php files
*/
$envFiles = array('_ss_environment.php', '../_ss_environment.php', '../../_ss_environment.php', '../../../_ss_environment.php');
foreach($envFiles as $envFile) {
if(@file_exists($envFile)) {
define('SS_ENVIRONMENT_FILE', $envFile);
include_once($envFile);
break;
}
}
///////////////////////////////////////////////////////////////////////////////
// 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($_POST);
}
/**
* Fix HTTP_HOST from reverse proxies
*/
if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) {
$_SERVER['HTTP_HOST'] = $_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);
/**
* Define the temporary folder if it wasn't defined yet
*/
if(!defined('TEMP_FOLDER')) {
define('TEMP_FOLDER', getTempFolder());
}
/**
* Priorities definition. These constants are used in calls to _t() as an optional argument
*/
define('PR_HIGH',100);
define('PR_MEDIUM',50);
define('PR_LOW',10);
/**
* Ensure we have enough memory
*/
increase_memory_limit_to('64M');
/**
* Ensure we don't run into xdebug's fairly conservative infinite recursion protection limit
*/
increase_xdebug_nesting_level_to(200);
/**
* Set default encoding
*/
if(function_exists('mb_http_output')) {
mb_http_output('UTF-8');
mb_internal_encoding('UTF-8');
mb_regex_encoding('UTF-8');
}
///////////////////////////////////////////////////////////////////////////////
// INCLUDES
if(defined('CUSTOM_INCLUDE_PATH')) {
$includePath = CUSTOM_INCLUDE_PATH . PATH_SEPARATOR
. FRAMEWORK_PATH . PATH_SEPARATOR
. FRAMEWORK_PATH . '/parsers' . PATH_SEPARATOR
. THIRDPARTY_PATH . PATH_SEPARATOR
. get_include_path();
} else {
$includePath = FRAMEWORK_PATH . PATH_SEPARATOR
. FRAMEWORK_PATH . '/parsers' . PATH_SEPARATOR
. THIRDPARTY_PATH . PATH_SEPARATOR
. get_include_path();
}
set_include_path($includePath);
// Include the files needed the initial manifest building, as well as any files
// that are needed for the boostrap process on every request.
require_once 'cache/Cache.php';
require_once 'core/Object.php';
require_once 'core/ClassInfo.php';
require_once 'view/TemplateGlobalProvider.php';
require_once 'control/Director.php';
require_once 'dev/Debug.php';
require_once 'dev/DebugView.php';
require_once 'dev/Backtrace.php';
require_once 'dev/ZendLog.php';
require_once 'dev/Log.php';
require_once 'filesystem/FileFinder.php';
require_once 'core/manifest/ClassLoader.php';
require_once 'core/manifest/ClassManifest.php';
require_once 'core/manifest/ManifestFileFinder.php';
require_once 'core/manifest/TemplateLoader.php';
require_once 'core/manifest/TemplateManifest.php';
require_once 'core/manifest/TokenisedRegularExpression.php';
///////////////////////////////////////////////////////////////////////////////
// MANIFEST
// Regenerate the manifest if ?flush is set, or if the database is being built.
// The coupling is a hack, but it removes an annoying bug where new classes
// referenced in _config.php files can be referenced during the build process.
$flush = (isset($_GET['flush']) || isset($_REQUEST['url']) && (
$_REQUEST['url'] == 'dev/build' || $_REQUEST['url'] == BASE_URL . '/dev/build'
));
$manifest = new SS_ClassManifest(BASE_PATH, false, $flush);
$loader = SS_ClassLoader::instance();
$loader->registerAutoloader();
$loader->pushManifest($manifest);
// Now that the class manifest is up, load the configuration
$configManifest = new SS_ConfigManifest(BASE_PATH, false, $flush);
Config::inst()->pushConfigManifest($configManifest);
SS_TemplateLoader::instance()->pushManifest(new SS_TemplateManifest(
BASE_PATH, false, isset($_GET['flush'])
));
// If in live mode, ensure deprecation, strict and notices are not reported
if(Director::isLive()) {
error_reporting(E_ALL & ~(E_DEPRECATED | E_STRICT | E_NOTICE));
}
///////////////////////////////////////////////////////////////////////////////
// POST-MANIFEST COMMANDS
/**
* Load error handlers
*/
Debug::loadErrorHandlers();
///////////////////////////////////////////////////////////////////////////////
// HELPER FUNCTIONS
function getSysTempDir() {
if(function_exists('sys_get_temp_dir')) {
$sysTmp = sys_get_temp_dir();
} elseif(isset($_ENV['TMP'])) {
$sysTmp = $_ENV['TMP'];
} else {
$tmpFile = tempnam('adfadsfdas','');
unlink($tmpFile);
$sysTmp = dirname($tmpFile);
}
return $sysTmp;
}
/**
* Returns the temporary folder that silverstripe should use for its cache files
* This is loaded into the TEMP_FOLDER define on start up
*
* @param $base The base path to use as the basis for the temp folder name. Defaults to BASE_PATH,
* which is usually fine; however, the $base argument can be used to help test.
*/
function getTempFolder($base = null) {
if(!$base) $base = BASE_PATH;
if($base) {
$cachefolder = "silverstripe-cache" . str_replace(array(' ', "/", ":", "\\"), "-", $base);
} else {
$cachefolder = "silverstripe-cache";
}
$ssTmp = BASE_PATH . "/silverstripe-cache";
if(@file_exists($ssTmp)) {
return $ssTmp;
}
$sysTmp = getSysTempDir();
$worked = true;
$ssTmp = "$sysTmp/$cachefolder";
if(!@file_exists($ssTmp)) {
@$worked = mkdir($ssTmp);
}
if(!$worked) {
$ssTmp = BASE_PATH . "/silverstripe-cache";
$worked = true;
if(!@file_exists($ssTmp)) {
@$worked = mkdir($ssTmp);
}
}
if(!$worked) {
user_error("Permission problem gaining access to a temp folder. " .
"Please create a folder named silverstripe-cache in the base folder " .
"of the installation and ensure it has the correct permissions", E_USER_ERROR);
}
return $ssTmp;
}
/**
* @deprecated 3.0 Please use {@link SS_ClassManifest::getItemPath()}.
*/
function getClassFile($className) {
Deprecation::notice('3.0', 'Use SS_ClassManifest::getItemPath() instead.');
return SS_ClassLoader::instance()->getManifest()->getItemPath($className);
}
/**
* Creates a class instance by the "singleton" design pattern.
* It will always return the same instance for this class,
* which can be used for performance reasons and as a simple
* way to access instance methods which don't rely on instance
* data (e.g. the custom SilverStripe static handling).
*
* @uses Object::strong_create()
*
* @param string $className
* @return Object
*/
function singleton($className) {
global $_SINGLETONS;
if(!isset($className)) user_error("singleton() Called without a class", E_USER_ERROR);
if(!is_string($className)) user_error("singleton() passed bad class_name: " . var_export($className,true), E_USER_ERROR);
if(!isset($_SINGLETONS[$className])) {
if(!class_exists($className)) user_error("Bad class to singleton() - $className", E_USER_ERROR);
$_SINGLETONS[$className] = Object::strong_create($className,null, true);
if(!$_SINGLETONS[$className]) user_error("singleton() Unknown class '$className'", E_USER_ERROR);
}
return $_SINGLETONS[$className];
}
function project() {
global $project;
return $project;
}
function stripslashes_recursively(&$array) {
foreach($array as $k => $v) {
if(is_array($v)) stripslashes_recursively($array[$k]);
else $array[$k] = stripslashes($v);
}
}
/**
* @see i18n::_t()
*/
function _t($entity, $string = "", $priority = 40, $context = "") {
return i18n::_t($entity, $string, $priority, $context);
}
/**
* Increase the memory limit to the given level if it's currently too low.
* Only increases up to the maximum defined in {@link set_increase_memory_limit_max()},
* and defaults to the 'memory_limit' setting in the PHP configuration.
*
* @param A memory limit string, such as "64M". If omitted, unlimited memory will be set.
* @return Boolean TRUE indicates a successful change, FALSE a denied change.
*/
function increase_memory_limit_to($memoryLimit = -1) {
$curLimit = ini_get('memory_limit');
// Can't go higher than infinite
if($curLimit == -1 ) return true;
// Check hard maximums
$max = get_increase_memory_limit_max();
if($max != -1 && translate_memstring($memoryLimit) > translate_memstring($max)) return false;
// Increase the memory limit if it's too low
if($memoryLimit == -1 || translate_memstring($memoryLimit) > translate_memstring($curLimit)) {
ini_set('memory_limit', $memoryLimit);
}
return true;
}
$_increase_memory_limit_max = ini_get('memory_limit');
/**
* Set the maximum allowed value for {@link increase_memory_limit_to()}.
* The same result can also be achieved through 'suhosin.memory_limit'
* if PHP is running with the Suhosin system.
*
* @param Memory limit string
*/
function set_increase_memory_limit_max($memoryLimit) {
global $_increase_memory_limit_max;
$_increase_memory_limit_max = $memoryLimit;
}
/**
* @return Memory limit string
*/
function get_increase_memory_limit_max() {
global $_increase_memory_limit_max;
return $_increase_memory_limit_max;
}
/**
* Increases the XDebug parameter max_nesting_level, which limits how deep recursion can go.
* Only does anything if (a) xdebug is installed and (b) the new limit is higher than the existing limit
*
* @param int $limit - The new limit to increase to
*/
function increase_xdebug_nesting_level_to($limit) {
if (function_exists('xdebug_enable')) {
$current = ini_get('xdebug.max_nesting_level');
if ((int)$current < $limit) ini_set('xdebug.max_nesting_level', $limit);
}
}
/**
* Turn a memory string, such as 512M into an actual number of bytes.
*
* @param A memory limit string, such as "64M"
*/
function translate_memstring($memString) {
switch(strtolower(substr($memString, -1))) {
case "k": return round(substr($memString, 0, -1)*1024);
case "m": return round(substr($memString, 0, -1)*1024*1024);
case "g": return round(substr($memString, 0, -1)*1024*1024*1024);
default: return round($memString);
}
}
/**
* Increase the time limit of this script. By default, the time will be unlimited.
* Only works if 'safe_mode' is off in the PHP configuration.
* Only values up to {@link get_increase_time_limit_max()} are allowed.
*
* @param $timeLimit The time limit in seconds. If omitted, no time limit will be set.
* @return Boolean TRUE indicates a successful change, FALSE a denied change.
*/
function increase_time_limit_to($timeLimit = null) {
$max = get_increase_time_limit_max();
if($max != -1 && $timeLimit > $max) return false;
if(!ini_get('safe_mode')) {
if(!$timeLimit) {
set_time_limit(0);
return true;
} else {
$currTimeLimit = ini_get('max_execution_time');
// Only increase if its smaller
if($currTimeLimit && $currTimeLimit < $timeLimit) {
set_time_limit($timeLimit);
}
return true;
}
} else {
return false;
}
}
$_increase_time_limit_max = -1;
/**
* Set the maximum allowed value for {@link increase_timeLimit_to()};
*
* @param Int Limit in seconds
*/
function set_increase_time_limit_max($timeLimit) {
global $_increase_time_limit_max;
$_increase_time_limit_max = $timeLimit;
}
/**
* @return Int Limit in seconds
*/
function get_increase_time_limit_max() {
global $_increase_time_limit_max;
return $_increase_time_limit_max;
}
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