517 lines
15 KiB
PHP
517 lines
15 KiB
PHP
<?php
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/**
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* Director is responsible for processing the URL
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* Director is the first step in the "execution pipeline". It parses the URL, matching it to
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* one of a number of patterns, and determines the controller, action and any argument to be
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* used. It then runs the controller, which will finally run the viewer and/or perform processing
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* steps.
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*/
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class Director {
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static private $urlSegment;
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static private $urlParams;
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static private $rules = array();
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static $siteMode;
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static $alternateBaseFolder;
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static $alternateBaseURL;
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static $dev_servers = array(
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'localhost',
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'127.0.0.1'
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);
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static $test_servers = array();
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static protected $environment_type;
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/**
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* Sets the site mode (if it is the public site or the cms),
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* and runs registered modules.
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*/
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static protected $callbacks;
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function __construct() {
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if(isset($_GET['debug_profile'])) Profiler::mark("Director", "construct");
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Session::addToArray('history', substr($_SERVER['REQUEST_URI'], strlen(Director::baseURL())));
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if(isset($_GET['debug_profile'])) Profiler::unmark("Director", "construct");
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}
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/**
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* Return a URL from this user's navigation history.
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* @param pagesBack The number of pages back to go. The default, 1, returns the previous
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* page.
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*/
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static function history($pagesBack = 1) {
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return Session::get('history.' . sizeof(Session::get('history')) - $pagesBack - 1);
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}
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/**
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* Add new rules
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*/
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static function addRules($priority, $rules) {
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Director::$rules[$priority] = isset(Director::$rules[$priority]) ? array_merge($rules, (array)Director::$rules[$priority]) : $rules;
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}
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/**
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* Process the given URL, creating the appropriate controller and executing it
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*/
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function direct($url) {
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if(isset($_GET['debug_profile'])) Profiler::mark("Director","direct");
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$controllerObj = Director::getControllerForURL($url);
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// Load the session into the controller
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$controllerObj->setSession(new Session($_SESSION));
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if(is_string($controllerObj) && substr($controllerObj,0,9) == 'redirect:') {
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Director::redirect(substr($controllerObj, 9));
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} else if($controllerObj) {
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$response = $controllerObj->run(array_merge((array)$_GET, (array)$_POST, (array)$_FILES));
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$controllerObj->getSession()->inst_save();
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if(isset($_GET['debug_profile'])) Profiler::mark("Outputting to browser");
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$response->output();
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if(isset($_GET['debug_profile'])) Profiler::unmark("Outputting to browser");
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}
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if(isset($_GET['debug_profile'])) Profiler::unmark("Director","direct");
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}
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/**
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* Test a URL request, returning a response object.
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* @param $url The URL to visit
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* @param $post The $_POST & $_FILES variables
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* @param $session The {@link Session} object representing the current session.
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*/
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function test($url, $post = null, $session = null) {
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$getVars = array();
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if(strpos($url,'?') !== false) {
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list($url, $getVarsEncoded) = explode('?', $url, 2);
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parse_str($getVarsEncoded, $getVars);
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}
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$controllerObj = Director::getControllerForURL($url);
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// Load the session into the controller
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$controllerObj->setSession($session ? $session : new Session(null));
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if(is_string($controllerObj) && substr($controllerObj,0,9) == 'redirect:') {
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user_error("Redirection not implemented in Director::test", E_USER_ERROR);
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} else if($controllerObj) {
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$response = $controllerObj->run( array_merge($getVars, (array)$post) );
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return $response;
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}
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}
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static function getControllerForURL($url) {
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if(isset($_GET['debug_profile'])) Profiler::mark("Director","getControllerForURL");
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$url = preg_replace( array( '/\/+/','/^\//', '/\/$/'),array('/','',''),$url);
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$urlParts = split('/+', $url);
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krsort(Director::$rules);
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if(isset($_REQUEST['debug'])) Debug::show(Director::$rules);
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foreach(Director::$rules as $priority => $rules) {
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foreach($rules as $pattern => $controller) {
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$patternParts = explode('/', $pattern);
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$matched = true;
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$arguments = array();
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foreach($patternParts as $i => $part) {
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$part = trim($part);
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if(isset($part[0]) && $part[0] == '$') {
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$arguments[substr($part,1)] = isset($urlParts[$i]) ? $urlParts[$i] : null;
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if($part == '$Controller' && !class_exists($arguments['Controller'])) {
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$matched = false;
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break;
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}
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} else if(!isset($urlParts[$i]) || $urlParts[$i] != $part) {
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$matched = false;
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break;
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}
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}
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if($matched) {
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if(substr($controller,0,2) == '->') {
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if($_REQUEST['debug'] == 1) Debug::message("Redirecting to $controller");
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if(isset($_GET['debug_profile'])) Profiler::unmark("Director","getControllerForURL");
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return "redirect:" . Director::absoluteURL(substr($controller,2), true);
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} else {
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if(isset($arguments['Controller']) && $controller == "*") {
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$controller = $arguments['Controller'];
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}
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if(isset($_REQUEST['debug'])) Debug::message("Using controller $controller");
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if(isset($arguments['Action'])) {
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$arguments['Action'] = str_replace('-','',$arguments['Action']);
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}
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if(isset($arguments['Action']) && ClassInfo::exists($controller.'_'.$arguments['Action']))
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$controller = $controller.'_'.$arguments['Action'];
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Director::$urlParams = $arguments;
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$controllerObj = new $controller();
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$controllerObj->setURLParams($arguments);
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if(isset($arguments['URLSegment'])) self::$urlSegment = $arguments['URLSegment'] . "/";
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if(isset($_GET['debug_profile'])) Profiler::unmark("Director","getControllerForURL");
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return $controllerObj;
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}
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}
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}
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}
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}
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static function urlParam($name) {
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return Director::$urlParams[$name];
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}
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static function urlParams() {
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return Director::$urlParams;
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}
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static function currentPage() {
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if(isset(Director::$urlParams['URLSegment'])) {
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$SQL_urlSegment = Convert::raw2sql(Director::$urlParams['URLSegment']);
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if (Translatable::is_enabled()) {
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return Translatable::get_one("SiteTree", "URLSegment = '$SQL_urlSegment'");
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} else {
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return DataObject::get_one("SiteTree", "URLSegment = '$SQL_urlSegment'");
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}
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} else {
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return Controller::curr();
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}
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}
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static function absoluteURL($url, $relativeToSiteBase = false) {
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if(strpos($url,'/') === false && !$relativeToSiteBase) $url = dirname($_SERVER['REQUEST_URI'] . 'x') . '/' . $url;
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if(substr($url,0,4) != "http") {
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if($url[0] != "/") $url = Director::baseURL() . $url;
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$url = self::protocolAndHost() . $url;
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}
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return $url;
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}
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static function protocolAndHost() {
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if(self::$alternateBaseURL) {
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if(preg_match('/^(http[^:]*:\/\/[^/]+)\//1', self::$alternateBaseURL, $matches)) {
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return $matches[1];
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}
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}
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$s = (isset($_SERVER['SSL']) || isset($_SERVER['HTTPS'])) ? 's' : '';
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return "http$s://" . $_SERVER['HTTP_HOST'];
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}
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/**
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* Redirect to another page.
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* - $url can be an absolute URL
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* - or it can be a URL relative to the "site base"
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* - if it is just a word without an slashes, then it redirects to another action on the current controller.
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*/
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static function redirect($url) {
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Controller::curr()->redirect($url);
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}
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/**
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* Tests whether a redirection has been requested.
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* @return string If redirect() has been called, it will return the URL redirected to. Otherwise, it will return null;
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*/
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static function redirected_to() {
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Controller::curr()->redirectedTo();
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}
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/**
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* Sets the HTTP status code
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*/
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static function set_status_code($code) {
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return Controller::curr()->getResponse()->setStatusCode($code);
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}
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/**
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* Returns the current HTTP status code
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*/
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static function get_status_code() {
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return Controller::curr()->getResponse()->getStatusCode();
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}
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/*
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* Redirect back
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*
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* Uses either the HTTP_REFERER or a manually set request-variable called
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* _REDIRECT_BACK_URL.
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* This variable is needed in scenarios where not HTTP-Referer is sent (
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* e.g when calling a page by location.href in IE).
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* If none of the two variables is available, it will redirect to the base
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* URL (see {@link baseURL()}).
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*/
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static function redirectBack() {
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$url = self::baseURL();
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if(isset($_REQUEST['_REDIRECT_BACK_URL'])) {
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$url = $_REQUEST['_REDIRECT_BACK_URL'];
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} else if(isset($_SERVER['HTTP_REFERER'])) {
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$url = $_SERVER['HTTP_REFERER'];
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}
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Director::redirect($url);
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}
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static function currentURLSegment() {
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return Director::$urlSegment;
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}
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/**
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* Returns a URL to composed of the given segments - usually controller, action, parameter
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*/
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static function link() {
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$parts = func_get_args();
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return Director::baseURL() . implode("/",$parts) . (sizeof($parts) > 2 ? "" : "/");
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}
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/**
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* Returns a URL for the given controller
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*/
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static function baseURL() {
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if(self::$alternateBaseURL) return self::$alternateBaseURL;
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else {
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$base = dirname(dirname($_SERVER['SCRIPT_NAME']));
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if($base == '/' || $base == '\\') return '/';
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else return $base . '/';
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}
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}
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static function setBaseURL($baseURL) {
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self::$alternateBaseURL = $baseURL;
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}
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static function baseFolder() {
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if(self::$alternateBaseFolder) return self::$alternateBaseFolder;
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else return dirname(dirname($_SERVER['SCRIPT_FILENAME']));
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}
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static function setBaseFolder($baseFolder) {
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self::$alternateBaseFolder = $baseFolder;
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}
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static function makeRelative($url) {
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$base1 = self::absoluteBaseURL();
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$base2 = self::baseFolder();
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// Allow for the accidental inclusion of a // in the URL
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$url = ereg_replace('([^:])//','\\1/',$url);
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if(substr($url,0,strlen($base1)) == $base1) return substr($url,strlen($base1));
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if(substr($url,0,strlen($base2)) == $base2) return substr($url,strlen($base2));
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return $url;
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}
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static function getAbsURL($url) {
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return Director::baseURL() . '/' . $url;
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}
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static function getAbsFile($file) {
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if($file[0] == '/') return $file;
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return Director::baseFolder() . '/' . $file;
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}
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static function fileExists($file) {
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return file_exists(Director::getAbsFile($file));
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}
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/**
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* Returns the Absolute URL for the given controller
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*/
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static function absoluteBaseURL() {
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return Director::absoluteURL(Director::baseURL());
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}
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static function absoluteBaseURLWithAuth() {
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if($_SERVER['PHP_AUTH_USER'])
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$login = "$_SERVER[PHP_AUTH_USER]:$_SERVER[PHP_AUTH_PW]@";
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if($_SERVER['SSL']) $s = "s";
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return "http$s://" . $login . $_SERVER['HTTP_HOST'] . Director::baseURL();
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}
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/**
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* Force the site to run on SSL. To use, call from _config.php
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*/
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static function forceSSL() {
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if(!isset($_SERVER['HTTPS']) && !Director::isDev()){
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$destURL = str_replace('http:','https:',Director::absoluteURL($_SERVER['REQUEST_URI']));
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header("Location: $destURL");
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die("<h1>Your browser is not accepting header redirects</h1><p>Please <a href=\"$destURL\">click here</a>");
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}
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}
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/**
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* Force a redirect to www.domain
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*/
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static function forceWWW() {
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if(!Director::isDev() && !Director::isTest() && strpos( $_SERVER['SERVER_NAME'], 'www') !== 0 ){
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if( $_SERVER['HTTPS'] )
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$destURL = str_replace('https://','https://www.',Director::absoluteURL($_SERVER['REQUEST_URI']));
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else
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$destURL = str_replace('http://','http://www.',Director::absoluteURL($_SERVER['REQUEST_URI']));
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header("Location: $destURL");
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die("<h1>Your browser is not accepting header redirects</h1><p>Please <a href=\"$destURL\">click here</a>");
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}
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}
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/**
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* Checks if the current HTTP-Request is an "Ajax-Request"
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* by checking for a custom header set by prototype.js or
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* wether a manually set request-parameter 'ajax' is present.
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*
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* @return boolean
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*/
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static function is_ajax() {
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if(Controller::has_curr()) {
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return Controller::curr()->isAjax();
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} else {
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return (
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isset($_REQUEST['ajax']) ||
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(isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == "XMLHttpRequest")
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);
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}
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}
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/**
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* @return boolean
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*/
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public static function is_cli() {
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return preg_match('/cli-script\.php/', $_SERVER['SCRIPT_NAME']);
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}
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/**
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* Sets the site mode (if it is the public site or the cms),
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* and runs registered modules.
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*/
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static function set_site_mode($mode) {
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Director::$siteMode = $mode;
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if(isset(self::$callbacks[$mode])) {
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foreach(self::$callbacks[$mode] as $extension) {
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call_user_func($extension);
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}
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}
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}
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static function get_site_mode() {
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return Director::$siteMode;
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}
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/**
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* Allows a module to register with the director to be run once
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* the controller is instantiated. The optional 'mode' parameter
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* can be either 'site' or 'cms', as those are the two values currently
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* set by controllers. The callback function will be run at the
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* initialization of the relevant controller.
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*
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* @param $function string PHP-function array based on http://php.net/call_user_func
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* @param $mode string
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*/
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static function add_callback($function, $mode = 'site') {
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self::$callbacks[$mode][] = $function;
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}
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static function set_dev_servers($servers) {
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Director::$dev_servers = $servers;
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}
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static function set_test_servers($servers) {
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Director::$test_servers = $servers;
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}
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/**
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* Force the environment type to be dev, test or live.
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* This will affect the results of isLive, isDev, and isTest
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*/
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static function set_environment_type($et) {
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if($et != 'dev' && $et != 'test' && $et != 'live') {
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user_error("Director::set_environment_type passed '$et'. It should be passed dev, test, or live");
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} else {
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self::$environment_type = $et;
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}
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}
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static function isLive() {
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return !(Director::isDev() || Director::isTest());
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}
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static function isDev() {
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if(self::$environment_type) return self::$environment_type == 'dev';
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// Use ?isDev=1 to get development access on the live server
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if(isset($_GET['isDev'])) {
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if(ClassInfo::ready()) {
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BasicAuth::requireLogin("SilverStripe developer access. Use your CMS login", "ADMIN");
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$_SESSION['isDev'] = $_GET['isDev'];
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} else {
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return true;
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}
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}
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if(isset($_SESSION['isDev']) && $_SESSION['isDev']) return true;
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// Check if we are running on one of the development servers
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if(in_array($_SERVER['HTTP_HOST'], Director::$dev_servers)) {
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return true;
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}
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// Check if we are running on one of the test servers
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if(in_array($_SERVER['HTTP_HOST'], Director::$test_servers)) {
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return true;
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}
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return false;
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}
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static function isTest() {
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if(self::$environment_type) {
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return self::$environment_type == 'test';
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}
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// Check if we are running on one of the test servers
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if(in_array($_SERVER['HTTP_HOST'], Director::$test_servers)) {
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return true;
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}
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return false;
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}
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/**
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* @todo These functions are deprecated, let's use isLive isDev and isTest instead.
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*/
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function isDevMode() { return self::isDev(); }
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function isTestMode() { return self::isTest(); }
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function isLiveMode() { return self::isLive(); }
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}
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?>
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