Файл: framework/control/Director.php
Строк: 1364
<?php
/**
* Director is responsible for processing URLs, and providing environment information.
*
* The most important part of director is {@link Director::direct()}, which is passed a URL and will execute the
* appropriate controller.
*
* Director also has a number of static methods that provide information about the environment, such as
* {@link Director::$environment_type}.
*
* @package framework
* @subpackage control
* @see Director::direct()
* @see Director::$rules
* @see Director::$environment_type
*/
class Director implements TemplateGlobalProvider {
static private $urlParams;
static private $rules = array();
/**
* @var SiteTree
*/
private static $current_page;
/**
* @config
* @var string
*/
private static $alternate_base_folder;
/**
* @config
* @var array
*/
private static $dev_servers = array();
/**
* @config
* @var array
*/
private static $test_servers = array();
/**
* Setting this explicitly specifies the protocol (http or https) used, overriding
* the normal behaviour of Director::is_https introspecting it from the request
*
* @config
* @var string - "http" or "https" to force the protocol, or false-ish to use default introspection from request
*/
private static $alternate_protocol;
/**
* @config
* @var string
*/
private static $alternate_base_url;
/**
* @config
* @var string
*/
private static $environment_type;
/**
* Add URL matching rules to the Director.
*
* The director is responsible for turning URLs into Controller objects.
*
* @deprecated 4.0 Use the "Director.rules" config setting instead
* @param $priority The priority of the rules; higher values will get your rule checked first. We recommend
* priority 100 for your site's rules. The built-in rules are priority 10, standard modules are
* priority 50.
*/
public static function addRules($priority, $rules) {
Deprecation::notice('4.0', 'Use the "Director.rules" config setting instead');
Config::inst()->update('Director', 'rules', $rules);
}
/**
* Process the given URL, creating the appropriate controller and executing it.
*
* Request processing is handled as follows:
* - Director::direct() creates a new SS_HTTPResponse object and passes this to Director::handleRequest().
* - Director::handleRequest($request) checks each of the Director rules and identifies a controller to handle
* this request.
* - Controller::handleRequest($request) is then called. This will find a rule to handle the URL, and call the
* rule handling method.
* - RequestHandler::handleRequest($request) is recursively called whenever a rule handling method returns a
* RequestHandler object.
*
* In addition to request processing, Director will manage the session, and perform the output of the actual
* response to the browser.
*
* @param $url String, the URL the user is visiting, without the querystring.
* @uses handleRequest() rule-lookup logic is handled by this.
* @uses Controller::run() Controller::run() handles the page logic for a Director::direct() call.
*/
public static function direct($url, DataModel $model) {
// Validate $_FILES array before merging it with $_POST
foreach($_FILES as $k => $v) {
if(is_array($v['tmp_name'])) {
$v = ArrayLib::array_values_recursive($v['tmp_name']);
foreach($v as $tmpFile) {
if($tmpFile && !is_uploaded_file($tmpFile)) {
user_error("File upload '$k' doesn't appear to be a valid upload", E_USER_ERROR);
}
}
} else {
if($v['tmp_name'] && !is_uploaded_file($v['tmp_name'])) {
user_error("File upload '$k' doesn't appear to be a valid upload", E_USER_ERROR);
}
}
}
$req = new SS_HTTPRequest(
(isset($_SERVER['X-HTTP-Method-Override']))
? $_SERVER['X-HTTP-Method-Override']
: $_SERVER['REQUEST_METHOD'],
$url,
$_GET,
ArrayLib::array_merge_recursive((array) $_POST, (array) $_FILES),
@file_get_contents('php://input')
);
$headers = self::extract_request_headers($_SERVER);
foreach ($headers as $header => $value) {
$req->addHeader($header, $value);
}
// Initiate an empty session - doesn't initialize an actual PHP session until saved (see below)
$session = Injector::inst()->create('Session', isset($_SESSION) ? $_SESSION : array());
// Only resume a session if its not started already, and a session identifier exists
if(!isset($_SESSION) && Session::request_contains_session_id()) {
$session->inst_start();
}
$output = Injector::inst()->get('RequestProcessor')->preRequest($req, $session, $model);
if ($output === false) {
// @TODO Need to NOT proceed with the request in an elegant manner
throw new SS_HTTPResponse_Exception(_t('Director.INVALID_REQUEST', 'Invalid request'), 400);
}
$result = Director::handleRequest($req, $session, $model);
// Save session data. Note that inst_save() will start/resume the session if required.
$session->inst_save();
// Return code for a redirection request
if(is_string($result) && substr($result,0,9) == 'redirect:') {
$url = substr($result, 9);
if(Director::is_cli()) {
// on cli, follow SilverStripe redirects automatically
return Director::direct(
str_replace(Director::absoluteBaseURL(), '', $url),
DataModel::inst()
);
} else {
$response = new SS_HTTPResponse();
$response->redirect($url);
$res = Injector::inst()->get('RequestProcessor')->postRequest($req, $response, $model);
if ($res !== false) {
$response->output();
}
}
// Handle a controller
} else if($result) {
if($result instanceof SS_HTTPResponse) {
$response = $result;
} else {
$response = new SS_HTTPResponse();
$response->setBody($result);
}
$res = Injector::inst()->get('RequestProcessor')->postRequest($req, $response, $model);
if ($res !== false) {
$response->output();
} else {
// @TODO Proper response here.
throw new SS_HTTPResponse_Exception("Invalid response");
}
//$controllerObj->getSession()->inst_save();
}
}
/**
* Test a URL request, returning a response object.
*
* This method is the counterpart of Director::direct() that is used in functional testing. It will execute the
* URL given, and return the result as an SS_HTTPResponse object.
*
* @param string $url The URL to visit
* @param array $postVars The $_POST & $_FILES variables
* @param Session $session The {@link Session} object representing the current session. By passing the same
* object to multiple calls of Director::test(), you can simulate a persisted session.
* @param string $httpMethod The HTTP method, such as GET or POST. It will default to POST if postVars is set,
* GET otherwise. Overwritten by $postVars['_method'] if present.
* @param string $body The HTTP body
* @param array $headers HTTP headers with key-value pairs
* @param array|Cookie_Backend $cookies to populate $_COOKIE
* @param HTTP_Request $request The {@see HTTP_Request} object generated as a part of this request
* @return SS_HTTPResponse
*
* @uses getControllerForURL() The rule-lookup logic is handled by this.
* @uses Controller::run() Controller::run() handles the page logic for a Director::direct() call.
*/
public static function test($url, $postVars = null, $session = array(), $httpMethod = null, $body = null,
$headers = array(), $cookies = array(), &$request = null) {
Config::nest();
Injector::nest();
// These are needed so that calling Director::test() doesnt muck with whoever is calling it.
// Really, it's some inappropriate coupling and should be resolved by making less use of statics
$oldStage = Versioned::current_stage();
$getVars = array();
if(!$httpMethod) $httpMethod = ($postVars || is_array($postVars)) ? "POST" : "GET";
if(!$session) $session = Injector::inst()->create('Session', array());
$cookieJar = $cookies instanceof Cookie_Backend
? $cookies
: Injector::inst()->createWithArgs('Cookie_Backend', array($cookies ?: array()));
// Back up the current values of the superglobals
$existingRequestVars = isset($_REQUEST) ? $_REQUEST : array();
$existingGetVars = isset($_GET) ? $_GET : array();
$existingPostVars = isset($_POST) ? $_POST : array();
$existingSessionVars = isset($_SESSION) ? $_SESSION : array();
$existingCookies = isset($_COOKIE) ? $_COOKIE : array();
$existingServer = isset($_SERVER) ? $_SERVER : array();
$existingRequirementsBackend = Requirements::backend();
Config::inst()->update('Cookie', 'report_errors', false);
Requirements::set_backend(new Requirements_Backend());
// Set callback to invoke prior to return
$onCleanup = function() use(
$existingRequestVars, $existingGetVars, $existingPostVars, $existingSessionVars,
$existingCookies, $existingServer, $existingRequirementsBackend, $oldStage
) {
// Restore the superglobals
$_REQUEST = $existingRequestVars;
$_GET = $existingGetVars;
$_POST = $existingPostVars;
$_SESSION = $existingSessionVars;
$_COOKIE = $existingCookies;
$_SERVER = $existingServer;
Requirements::set_backend($existingRequirementsBackend);
// These are needed so that calling Director::test() doesnt muck with whoever is calling it.
// Really, it's some inappropriate coupling and should be resolved by making less use of statics
Versioned::reading_stage($oldStage);
Injector::unnest(); // Restore old CookieJar, etc
Config::unnest();
};
if (strpos($url, '#') !== false) {
$url = substr($url, 0, strpos($url, '#'));
}
// Handle absolute URLs
if (parse_url($url, PHP_URL_HOST)) {
$bits = parse_url($url);
// If a port is mentioned in the absolute URL, be sure to add that into the
// HTTP host
if(isset($bits['port'])) {
$_SERVER['HTTP_HOST'] = $bits['host'].':'.$bits['port'];
} else {
$_SERVER['HTTP_HOST'] = $bits['host'];
}
}
// Ensure URL is properly made relative.
// Example: url passed is "/ss31/my-page" (prefixed with BASE_URL), this should be changed to "my-page"
$url = self::makeRelative($url);
$urlWithQuerystring = $url;
if(strpos($url, '?') !== false) {
list($url, $getVarsEncoded) = explode('?', $url, 2);
parse_str($getVarsEncoded, $getVars);
}
// Replace the superglobals with appropriate test values
$_REQUEST = ArrayLib::array_merge_recursive((array) $getVars, (array) $postVars);
$_GET = (array) $getVars;
$_POST = (array) $postVars;
$_SESSION = $session ? $session->inst_getAll() : array();
$_COOKIE = $cookieJar->getAll(false);
Injector::inst()->registerService($cookieJar, 'Cookie_Backend');
$_SERVER['REQUEST_URI'] = Director::baseURL() . $urlWithQuerystring;
$request = new SS_HTTPRequest($httpMethod, $url, $getVars, $postVars, $body);
if($headers) foreach($headers as $k => $v) $request->addHeader($k, $v);
// Pre-request filtering
// @see issue #2517
$model = DataModel::inst();
$output = Injector::inst()->get('RequestProcessor')->preRequest($request, $session, $model);
if ($output === false) {
$onCleanup();
throw new SS_HTTPResponse_Exception(_t('Director.INVALID_REQUEST', 'Invalid request'), 400);
}
// TODO: Pass in the DataModel
$result = Director::handleRequest($request, $session, $model);
// Ensure that the result is an SS_HTTPResponse object
if(is_string($result)) {
if(substr($result,0,9) == 'redirect:') {
$response = new SS_HTTPResponse();
$response->redirect(substr($result, 9));
$result = $response;
} else {
$result = new SS_HTTPResponse($result);
}
}
$output = Injector::inst()->get('RequestProcessor')->postRequest($request, $result, $model);
if ($output === false) {
$onCleanup();
throw new SS_HTTPResponse_Exception("Invalid response");
}
// Return valid response
$onCleanup();
return $result;
}
/**
* Handle an HTTP request, defined with a SS_HTTPRequest object.
*
* @return SS_HTTPResponse|string
*/
protected static function handleRequest(SS_HTTPRequest $request, Session $session, DataModel $model) {
$rules = Config::inst()->get('Director', 'rules');
if(isset($_REQUEST['debug'])) Debug::show($rules);
foreach($rules as $pattern => $controllerOptions) {
if(is_string($controllerOptions)) {
if(substr($controllerOptions,0,2) == '->') {
$controllerOptions = array('Redirect' => substr($controllerOptions,2));
} else {
$controllerOptions = array('Controller' => $controllerOptions);
}
}
if(($arguments = $request->match($pattern, true)) !== false) {
$request->setRouteParams($controllerOptions);
// controllerOptions provide some default arguments
$arguments = array_merge($controllerOptions, $arguments);
// Find the controller name
if(isset($arguments['Controller'])) $controller = $arguments['Controller'];
// Pop additional tokens from the tokeniser if necessary
if(isset($controllerOptions['_PopTokeniser'])) {
$request->shift($controllerOptions['_PopTokeniser']);
}
// Handle redirections
if(isset($arguments['Redirect'])) {
return "redirect:" . Director::absoluteURL($arguments['Redirect'], true);
} else {
Director::$urlParams = $arguments;
$controllerObj = Injector::inst()->create($controller);
$controllerObj->setSession($session);
try {
$result = $controllerObj->handleRequest($request, $model);
} catch(SS_HTTPResponse_Exception $responseException) {
$result = $responseException->getResponse();
}
if(!is_object($result) || $result instanceof SS_HTTPResponse) return $result;
user_error("Bad result from url " . $request->getURL() . " handled by " .
get_class($controllerObj)." controller: ".get_class($result), E_USER_WARNING);
}
}
}
// No URL rules matched, so return a 404 error.
return new SS_HTTPResponse('No URL rule was matched', 404);
}
/**
* Set url parameters (should only be called internally by RequestHandler->handleRequest()).
*
* @param $params array
*/
public static function setUrlParams($params) {
Director::$urlParams = $params;
}
/**
* Return the {@link SiteTree} object that is currently being viewed. If there is no SiteTree object to return,
* then this will return the current controller.
*
* @return SiteTree
*/
public static function get_current_page() {
return self::$current_page ? self::$current_page : Controller::curr();
}
/**
* Set the currently active {@link SiteTree} object that is being used to respond to the request.
*
* @param SiteTree $page
*/
public static function set_current_page($page) {
self::$current_page = $page;
}
/**
* Turns the given URL into an absolute URL.
* By default non-site root relative urls will be evaluated relative to the current request.
*
* @param string $url URL To transform to absolute
* @param bool $relativeToSiteBase Flag indicating if non-site root relative urls should be
* evaluated relative to the site BaseURL instead of the current url.
* @return string The fully qualified URL
*/
public static function absoluteURL($url, $relativeToSiteBase = false) {
if(!isset($_SERVER['REQUEST_URI'])) return false;
//a url of . or ./ is the same as an empty url
if ($url == '.' || $url == './') {
$url = '';
}
if(strpos($url,'/') === false && !$relativeToSiteBase) {
//if there's no URL we want to force a trailing slash on the link
if (!$url) {
$url = '/';
}
$url = Controller::join_links(dirname($_SERVER['REQUEST_URI'] . 'x'), $url);
}
if(substr($url,0,4) != "http") {
if(strpos($url, '/') !== 0) $url = Director::baseURL() . $url;
// Sometimes baseURL() can return a full URL instead of just a path
if(substr($url,0,4) != "http") $url = self::protocolAndHost() . $url;
}
return $url;
}
/**
* Returns the part of the URL, 'http://www.mysite.com'.
*
* @return boolean|string The domain from the PHP environment. Returns FALSE is this environment variable isn't
* set.
*/
public static function protocolAndHost() {
$alternate = Config::inst()->get('Director', 'alternate_base_url');
if($alternate) {
if(preg_match('/^(http[^:]*://[^/]+)(/|$)/', $alternate, $matches)) {
return $matches[1];
}
}
if(isset($_SERVER['HTTP_HOST'])) {
return Director::protocol() . $_SERVER['HTTP_HOST'];
} else {
global $_FILE_TO_URL_MAPPING;
if(Director::is_cli() && isset($_FILE_TO_URL_MAPPING)) $errorSuggestion = ' You probably want to define '.
'an entry in $_FILE_TO_URL_MAPPING that covers "' . Director::baseFolder() . '"';
else if(Director::is_cli()) $errorSuggestion = ' You probably want to define $_FILE_TO_URL_MAPPING in '.
'your _ss_environment.php as instructed on the "sake" page of the doc.silverstripe.com wiki';
else $errorSuggestion = "";
user_error("Director::protocolAndHost() lacks sufficient information - HTTP_HOST not set."
. $errorSuggestion, E_USER_WARNING);
return false;
}
}
/**
* Return the current protocol that the site is running under.
*
* @return string
*/
public static function protocol() {
return (self::is_https()) ? 'https://' : 'http://';
}
/**
* Return whether the site is running as under HTTPS.
*
* @return boolean
*/
public static function is_https() {
$return = false;
// See https://en.wikipedia.org/wiki/List_of_HTTP_header_fields
// See https://support.microsoft.com/?kbID=307347
$headerOverride = false;
if(TRUSTED_PROXY) {
$headers = (defined('SS_TRUSTED_PROXY_PROTOCOL_HEADER')) ? array(SS_TRUSTED_PROXY_PROTOCOL_HEADER) : null;
if(!$headers) {
// Backwards compatible defaults
$headers = array('HTTP_X_FORWARDED_PROTO', 'HTTP_X_FORWARDED_PROTOCOL', 'HTTP_FRONT_END_HTTPS');
}
foreach($headers as $header) {
$headerCompareVal = ($header === 'HTTP_FRONT_END_HTTPS' ? 'on' : 'https');
if(!empty($_SERVER[$header]) && strtolower($_SERVER[$header]) == $headerCompareVal) {
$headerOverride = true;
break;
}
}
}
if ($protocol = Config::inst()->get('Director', 'alternate_protocol')) {
$return = ($protocol == 'https');
} else if($headerOverride) {
$return = true;
} else if((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off')) {
$return = true;
} else if(isset($_SERVER['SSL'])) {
$return = true;
} else {
$return = false;
}
return $return;
}
/**
* Returns the root URL for the site.
*
* It will be automatically calculated unless it is overridden with
* {@link setBaseURL()}.
*
* @return string
*/
public static function baseURL() {
$alternate = Config::inst()->get('Director', 'alternate_base_url');
if($alternate) {
return $alternate;
} else {
$base = BASE_URL;
if($base == '/' || $base == '/.' || $base == '\') {
$baseURL = '/';
} else {
$baseURL = $base . '/';
}
if(defined('BASE_SCRIPT_URL')) {
return $baseURL . BASE_SCRIPT_URL;
}
return $baseURL;
}
}
/**
* Sets the root URL for the website.
* If the site isn't accessible from the URL you provide, weird things will happen.
*
* @deprecated 4.0 Use the "Director.alternate_base_url" config setting instead
*/
public static function setBaseURL($baseURL) {
Deprecation::notice('4.0', 'Use the "Director.alternate_base_url" config setting instead');
Config::inst()->update('Director', 'alternate_base_url', $baseURL);
}
/**
* Returns the root filesystem folder for the site.
* It will be automatically calculated unless it is overridden with {@link setBaseFolder()}.
*/
public static function baseFolder() {
$alternate = Config::inst()->get('Director', 'alternate_base_folder');
return ($alternate) ? $alternate : BASE_PATH;
}
/**
* Sets the root folder for the website.
* If the site isn't accessible from the folder you provide, weird things will happen.
*
* @deprecated 4.0 Use the "Director.alternate_base_folder" config setting instead
*/
public static function setBaseFolder($baseFolder) {
Deprecation::notice('4.0', 'Use the "Director.alternate_base_folder" config setting instead');
Config::inst()->update('Director', 'alternate_base_folder', $baseFolder);
}
/**
* Turns an absolute URL or folder into one that's relative to the root of
* the site. This is useful when turning a URL into a filesystem reference,
* or vice versa.
*
* @param string $url Accepts both a URL or a filesystem path
* @return string Either a relative URL if the checks succeeded, or the
* original (possibly absolute) URL.
*/
public static function makeRelative($url) {
// Allow for the accidental inclusion whitespace and // in the URL
$url = trim(preg_replace('#([^:])//#', '\1/', $url));
$base1 = self::absoluteBaseURL();
$baseDomain = substr($base1, strlen(self::protocol()));
// Only bother comparing the URL to the absolute version if $url looks like a URL.
if(preg_match('/^https?[^:]*:///',$url,$matches)) {
$urlProtocol = $matches[0];
$urlWithoutProtocol = substr($url, strlen($urlProtocol));
// If we are already looking at baseURL, return '' (substr will return false)
if($url == $base1) {
return '';
}
else if(substr($url,0,strlen($base1)) == $base1) {
return substr($url,strlen($base1));
}
else if(substr($base1,-1)=="/" && $url == substr($base1,0,-1)) {
// Convert http://www.mydomain.com/mysitedir to ''
return "";
}
if(substr($urlWithoutProtocol,0,strlen($baseDomain)) == $baseDomain) {
return substr($urlWithoutProtocol,strlen($baseDomain));
}
}
// test for base folder, e.g. /var/www
$base2 = self::baseFolder();
if(substr($url,0,strlen($base2)) == $base2) return substr($url,strlen($base2));
// Test for relative base url, e.g. mywebsite/ if the full URL is http://localhost/mywebsite/
$base3 = self::baseURL();
if(substr($url,0,strlen($base3)) == $base3) {
return substr($url,strlen($base3));
}
// Test for relative base url, e.g mywebsite/ if the full url is localhost/myswebsite
if(substr($url,0,strlen($baseDomain)) == $baseDomain) {
return substr($url, strlen($baseDomain));
}
// Nothing matched, fall back to returning the original URL
return $url;
}
/**
* Returns true if a given path is absolute. Works under both *nix and windows
* systems
*
* @param string $path
* @return bool
*/
public static function is_absolute($path) {
if($path[0] == '/' || $path[0] == '\') return true;
return preg_match('/^[a-zA-Z]:[\\/]/', $path) == 1;
}
/**
* Checks if a given URL is absolute (e.g. starts with 'http://' etc.).
* URLs beginning with "//" are treated as absolute, as browsers take this to mean
* the same protocol as currently being used.
*
* Useful to check before redirecting based on a URL from user submissions
* through $_GET or $_POST, and avoid phishing attacks by redirecting
* to an attackers server.
*
* Note: Can't solely rely on PHP's parse_url() , since it is not intended to work with relative URLs
* or for security purposes. filter_var($url, FILTER_VALIDATE_URL) has similar problems.
*
* @param string $url
* @return boolean
*/
public static function is_absolute_url($url) {
// Strip off the query and fragment parts of the URL before checking
if(($queryPosition = strpos($url, '?')) !== false) {
$url = substr($url, 0, $queryPosition-1);
}
if(($hashPosition = strpos($url, '#')) !== false) {
$url = substr($url, 0, $hashPosition-1);
}
$colonPosition = strpos($url, ':');
$slashPosition = strpos($url, '/');
return (
// Base check for existence of a host on a compliant URL
parse_url($url, PHP_URL_HOST)
// Check for more than one leading slash without a protocol.
// While not a RFC compliant absolute URL, it is completed to a valid URL by some browsers,
// and hence a potential security risk. Single leading slashes are not an issue though.
|| preg_match('%^s*/{2,}%', $url)
|| (
// If a colon is found, check if it's part of a valid scheme definition
// (meaning its not preceded by a slash).
$colonPosition !== FALSE
&& ($slashPosition === FALSE || $colonPosition < $slashPosition)
)
);
}
/**
* Checks if a given URL is relative by checking {@link is_absolute_url()}.
*
* @param string $url
* @return boolean
*/
public static function is_relative_url($url) {
return (!Director::is_absolute_url($url));
}
/**
* Checks if the given URL is belonging to this "site" (not an external link).
* That's the case if the URL is relative, as defined by {@link is_relative_url()},
* or if the host matches {@link protocolAndHost()}.
*
* Useful to check before redirecting based on a URL from user submissions
* through $_GET or $_POST, and avoid phishing attacks by redirecting
* to an attackers server.
*
* @param string $url
* @return boolean
*/
public static function is_site_url($url) {
$urlHost = parse_url($url, PHP_URL_HOST);
$actualHost = parse_url(self::protocolAndHost(), PHP_URL_HOST);
if($urlHost && $actualHost && $urlHost == $actualHost) {
return true;
} else {
return self::is_relative_url($url);
}
}
/**
* Takes a $_SERVER data array and extracts HTTP request headers.
*
* @param array $data
* @return array
*/
public static function extract_request_headers(array $server) {
$headers = array();
foreach($server as $key => $value) {
if(substr($key, 0, 5) == 'HTTP_') {
$key = substr($key, 5);
$key = strtolower(str_replace('_', ' ', $key));
$key = str_replace(' ', '-', ucwords($key));
$headers[$key] = $value;
}
}
if(isset($server['CONTENT_TYPE'])) $headers['Content-Type'] = $server['CONTENT_TYPE'];
if(isset($server['CONTENT_LENGTH'])) $headers['Content-Length'] = $server['CONTENT_LENGTH'];
return $headers;
}
/**
* Given a filesystem reference relative to the site root, return the full file-system path.
*
* @param string $file
* @return string
*/
public static function getAbsFile($file) {
return self::is_absolute($file) ? $file : Director::baseFolder() . '/' . $file;
}
/**
* Returns true if the given file exists.
* @param $file Filename specified relative to the site root
*/
public static function fileExists($file) {
// replace any appended query-strings, e.g. /path/to/foo.php?bar=1 to /path/to/foo.php
$file = preg_replace('/([^?]*)?.*/','$1',$file);
return file_exists(Director::getAbsFile($file));
}
/**
* Returns the Absolute URL of the site root.
*/
public static function absoluteBaseURL() {
return Director::absoluteURL(Director::baseURL());
}
/**
* Returns the Absolute URL of the site root, embedding the current basic-auth credentials into the URL.
*/
public static function absoluteBaseURLWithAuth() {
$s = "";
$login = "";
if(isset($_SERVER['PHP_AUTH_USER'])) $login = "$_SERVER[PHP_AUTH_USER]:$_SERVER[PHP_AUTH_PW]@";
return Director::protocol() . $login . $_SERVER['HTTP_HOST'] . Director::baseURL();
}
/**
* Skip any further processing and immediately respond with a redirect to the passed URL.
*
* @param string $destURL - The URL to redirect to
*/
protected static function force_redirect($destURL) {
$response = new SS_HTTPResponse();
$response->redirect($destURL, 301);
HTTP::add_cache_headers($response);
// TODO: Use an exception - ATM we can be called from _config.php, before Director#handleRequest's try block
$response->output();
die;
}
/**
* Force the site to run on SSL.
*
* To use, call from _config.php. For example:
* <code>
* if(Director::isLive()) Director::forceSSL();
* </code>
*
* If you don't want your entire site to be on SSL, you can pass an array of PCRE regular expression
* patterns for matching relative URLs. For example:
* <code>
* if(Director::isLive()) Director::forceSSL(array('/^admin/', '/^Security/'));
* </code>
*
* If you want certain parts of your site protected under a different domain, you can specify
* the domain as an argument:
* <code>
* if(Director::isLive()) Director::forceSSL(array('/^admin/', '/^Security/'), 'secure.mysite.com');
* </code>
*
* Note that the session data will be lost when moving from HTTP to HTTPS.
* It is your responsibility to ensure that this won't cause usability problems.
*
* CAUTION: This does not respect the site environment mode. You should check this
* as per the above examples using Director::isLive() or Director::isTest() for example.
*
* @param array $patterns Array of regex patterns to match URLs that should be HTTPS
* @param string $secureDomain Secure domain to redirect to. Defaults to the current domain
* @return boolean|string String of URL when unit tests running, boolean FALSE if patterns don't match request URI
*/
public static function forceSSL($patterns = null, $secureDomain = null) {
if(!isset($_SERVER['REQUEST_URI'])) return false;
$matched = false;
if($patterns) {
// Calling from the command-line?
if(!isset($_SERVER['REQUEST_URI'])) return;
$relativeURL = self::makeRelative(Director::absoluteURL($_SERVER['REQUEST_URI']));
// protect portions of the site based on the pattern
foreach($patterns as $pattern) {
if(preg_match($pattern, $relativeURL)) {
$matched = true;
break;
}
}
} else {
// protect the entire site
$matched = true;
}
if($matched && !self::is_https()) {
// if an domain is specified, redirect to that instead of the current domain
if($secureDomain) {
$url = 'https://' . $secureDomain . $_SERVER['REQUEST_URI'];
} else {
$url = $_SERVER['REQUEST_URI'];
}
$destURL = str_replace('http:', 'https:', Director::absoluteURL($url));
// This coupling to SapphireTest is necessary to test the destination URL and to not interfere with tests
if(class_exists('SapphireTest', false) && SapphireTest::is_running_test()) {
return $destURL;
} else {
self::force_redirect($destURL);
}
} else {
return false;
}
}
/**
* Force a redirect to a domain starting with "www."
*/
public static function forceWWW() {
if(!Director::isDev() && !Director::isTest() && strpos($_SERVER['HTTP_HOST'], 'www') !== 0) {
$destURL = str_replace(Director::protocol(), Director::protocol() . 'www.',
Director::absoluteURL($_SERVER['REQUEST_URI']));
self::force_redirect($destURL);
}
}
/**
* Checks if the current HTTP-Request is an "Ajax-Request"
* by checking for a custom header set by jQuery or
* wether a manually set request-parameter 'ajax' is present.
*
* @return boolean
*/
public static function is_ajax() {
if(Controller::has_curr()) {
return Controller::curr()->getRequest()->isAjax();
} else {
return (
isset($_REQUEST['ajax']) ||
(isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == "XMLHttpRequest")
);
}
}
/**
* Returns true if this script is being run from the command line rather than the webserver.
*
* @return boolean
*/
public static function is_cli() {
return (php_sapi_name() == "cli");
}
////////////////////////////////////////////////////////////////////////////////////////////
// Environment type methods
////////////////////////////////////////////////////////////////////////////////////////////
/**
* Set the environment type of the current site.
*
* Typically, a SilverStripe site have a number of environments:
* - development environments, such a copy on your local machine.
* - test sites, such as the one you show the client before going live.
* - the live site itself.
*
* The behaviour of these environments often varies slightly. For example, development sites may have errors
* dumped to the screen, and order confirmation emails might be sent to the developer instead of the client.
*
* To help with this, SilverStripe supports the notion of an environment type. The environment type can be dev,
* test, or live.
*
* You can set it explicitly with Director::set_environment_tpye(). Or you can use
* {@link Director::$dev_servers} and {@link Director::$test_servers} to set it implicitly, based on the
* value of $_SERVER['HTTP_HOST']. If the HTTP_HOST value is one of the servers listed, then the environment type
* will be test or dev. Otherwise, the environment type will be live.
*
* Dev mode can also be forced by putting ?isDev=1 in your URL, which will ask you to log in and then push the
* site into dev mode for the remainder of the session. Putting ?isDev=0 onto the URL can turn it back.
*
* Test mode can also be forced by putting ?isTest=1 in your URL, which will ask you to log in and then push the
* site into test mode for the remainder of the session. Putting ?isTest=0 onto the URL can turn it back.
*
* Generally speaking, these methods will be called from your _config.php file.
*
* Once the environment type is set, it can be checked with {@link Director::isDev()}, {@link Director::isTest()},
* and {@link Director::isLive()}.
*
* @deprecated 4.0 Use the "Director.environment_type" config setting instead
* @param $et string The environment type: dev, test, or live.
*/
public static function set_environment_type($et) {
if($et != 'dev' && $et != 'test' && $et != 'live') {
user_error("Director::set_environment_type passed '$et'. It should be passed dev, test, or live",
E_USER_WARNING);
} else {
Deprecation::notice('4.0', 'Use the "Director.environment_type" config setting instead');
Config::inst()->update('Director', 'environment_type', $et);
}
}
/**
* Can also be checked with {@link Director::isDev()}, {@link Director::isTest()}, and {@link Director::isLive()}.
*
* @return string 'dev', 'test' or 'live'
*/
public static function get_environment_type() {
if(Director::isLive()) {
return 'live';
} elseif(Director::isTest()) {
return 'test';
} elseif(Director::isDev()) {
return 'dev';
} else {
return false;
}
}
/*
* This function will return true if the site is in a live environment.
* For information about environment types, see {@link Director::set_environment_type()}.
*/
public static function isLive() {
return !(Director::isDev() || Director::isTest());
}
/**
* This function will return true if the site is in a development environment.
* For information about environment types, see {@link Director::set_environment_type()}.
*/
public static function isDev() {
// Check session
if($env = self::session_environment()) return $env === 'dev';
// Check config
if(Config::inst()->get('Director', 'environment_type') === 'dev') return true;
// Check if we are running on one of the test servers
$devServers = (array)Config::inst()->get('Director', 'dev_servers');
if(isset($_SERVER['HTTP_HOST']) && in_array($_SERVER['HTTP_HOST'], $devServers)) {
return true;
}
return false;
}
/**
* This function will return true if the site is in a test environment.
* For information about environment types, see {@link Director::set_environment_type()}.
*/
public static function isTest() {
// In case of isDev and isTest both being set, dev has higher priority
if(self::isDev()) return false;
// Check saved session
if($env = self::session_environment()) return $env === 'test';
// Check config
if(Config::inst()->get('Director', 'environment_type') === 'test') return true;
// Check if we are running on one of the test servers
$testServers = (array)Config::inst()->get('Director', 'test_servers');
if(isset($_SERVER['HTTP_HOST']) && in_array($_SERVER['HTTP_HOST'], $testServers)) {
return true;
}
return false;
}
/**
* Check or update any temporary environment specified in the session
*
* @return string 'test', 'dev', or null
*/
protected static function session_environment() {
// Set session from querystring
if(isset($_GET['isDev'])) {
if(isset($_SESSION)) {
unset($_SESSION['isTest']); // In case we are changing from test mode
$_SESSION['isDev'] = $_GET['isDev'];
}
return 'dev';
} elseif(isset($_GET['isTest'])) {
if(isset($_SESSION)) {
unset($_SESSION['isDev']); // In case we are changing from dev mode
$_SESSION['isTest'] = $_GET['isTest'];
}
return 'test';
}
// Check session
if(isset($_SESSION['isDev']) && $_SESSION['isDev']) {
return 'dev';
} elseif(isset($_SESSION['isTest']) && $_SESSION['isTest']) {
return 'test';
} else {
return null;
}
}
/**
* @return array Returns an array of strings of the method names of methods on the call that should be exposed
* as global variables in the templates.
*/
public static function get_template_global_variables() {
return array(
'absoluteBaseURL',
'baseURL',
'is_ajax',
'isAjax' => 'is_ajax',
'BaseHref' => 'absoluteBaseURL', //@deprecated 3.0
);
}
}