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<?php
/**
* Joomla! Content Management System
*
* @copyright (C) 2011 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
namespace Joomla\CMS\Application;
defined('JPATH_PLATFORM') or die;
use Joomla\CMS\Input\Input;
use Joomla\Registry\Registry;
use Joomla\String\StringHelper;
/**
* Base class for a Joomla! Web application.
*
* @since 2.5.0
* @note As of 4.0 this class will be abstract
*/
class WebApplication extends BaseApplication
{
/**
* @var string Character encoding string.
* @since 1.7.3
*/
public $charSet = 'utf-8';
/**
* @var string Response mime type.
* @since 1.7.3
*/
public $mimeType = 'text/html';
/**
* @var \JDate The body modified date for response headers.
* @since 1.7.3
*/
public $modifiedDate;
/**
* @var \JApplicationWebClient The application client object.
* @since 1.7.3
*/
public $client;
/**
* @var \JDocument The application document object.
* @since 1.7.3
*/
protected $document;
/**
* @var \JLanguage The application language object.
* @since 1.7.3
*/
protected $language;
/**
* @var \JSession The application session object.
* @since 1.7.3
*/
protected $session;
/**
* @var object The application response object.
* @since 1.7.3
*/
protected $response;
/**
* @var WebApplication The application instance.
* @since 1.7.3
*/
protected static $instance;
/**
* A map of integer HTTP 1.1 response codes to the full HTTP Status for the headers.
*
* @var object
* @since 3.4
* @link http://tools.ietf.org/pdf/rfc7231.pdf
*/
private $responseMap = array(
100 => 'HTTP/1.1 100 Continue',
101 => 'HTTP/1.1 101 Switching Protocols',
102 => 'HTTP/1.1 102 Processing',
200 => 'HTTP/1.1 200 OK',
201 => 'HTTP/1.1 201 Created',
202 => 'HTTP/1.1 202 Accepted',
203 => 'HTTP/1.1 203 Non-Authoritative Information',
204 => 'HTTP/1.1 204 No Content',
205 => 'HTTP/1.1 205 Reset Content',
206 => 'HTTP/1.1 206 Partial Content',
207 => 'HTTP/1.1 207 Multi-Status',
208 => 'HTTP/1.1 208 Already Reported',
226 => 'HTTP/1.1 226 IM Used',
300 => 'HTTP/1.1 300 Multiple Choices',
301 => 'HTTP/1.1 301 Moved Permanently',
302 => 'HTTP/1.1 302 Found',
303 => 'HTTP/1.1 303 See other',
304 => 'HTTP/1.1 304 Not Modified',
305 => 'HTTP/1.1 305 Use Proxy',
306 => 'HTTP/1.1 306 (Unused)',
307 => 'HTTP/1.1 307 Temporary Redirect',
308 => 'HTTP/1.1 308 Permanent Redirect',
400 => 'HTTP/1.1 400 Bad Request',
401 => 'HTTP/1.1 401 Unauthorized',
402 => 'HTTP/1.1 402 Payment Required',
403 => 'HTTP/1.1 403 Forbidden',
404 => 'HTTP/1.1 404 Not Found',
405 => 'HTTP/1.1 405 Method Not Allowed',
406 => 'HTTP/1.1 406 Not Acceptable',
407 => 'HTTP/1.1 407 Proxy Authentication Required',
408 => 'HTTP/1.1 408 Request Timeout',
409 => 'HTTP/1.1 409 Conflict',
410 => 'HTTP/1.1 410 Gone',
411 => 'HTTP/1.1 411 Length Required',
412 => 'HTTP/1.1 412 Precondition Failed',
413 => 'HTTP/1.1 413 Payload Too Large',
414 => 'HTTP/1.1 414 URI Too Long',
415 => 'HTTP/1.1 415 Unsupported Media Type',
416 => 'HTTP/1.1 416 Range Not Satisfiable',
417 => 'HTTP/1.1 417 Expectation Failed',
418 => 'HTTP/1.1 418 I\'m a teapot',
421 => 'HTTP/1.1 421 Misdirected Request',
422 => 'HTTP/1.1 422 Unprocessable Entity',
423 => 'HTTP/1.1 423 Locked',
424 => 'HTTP/1.1 424 Failed Dependency',
426 => 'HTTP/1.1 426 Upgrade Required',
428 => 'HTTP/1.1 428 Precondition Required',
429 => 'HTTP/1.1 429 Too Many Requests',
431 => 'HTTP/1.1 431 Request Header Fields Too Large',
451 => 'HTTP/1.1 451 Unavailable For Legal Reasons',
500 => 'HTTP/1.1 500 Internal Server Error',
501 => 'HTTP/1.1 501 Not Implemented',
502 => 'HTTP/1.1 502 Bad Gateway',
503 => 'HTTP/1.1 503 Service Unavailable',
504 => 'HTTP/1.1 504 Gateway Timeout',
505 => 'HTTP/1.1 505 HTTP Version Not Supported',
506 => 'HTTP/1.1 506 Variant Also Negotiates',
507 => 'HTTP/1.1 507 Insufficient Storage',
508 => 'HTTP/1.1 508 Loop Detected',
510 => 'HTTP/1.1 510 Not Extended',
511 => 'HTTP/1.1 511 Network Authentication Required',
);
/**
* A map of HTTP Response headers which may only send a single value, all others
* are considered to allow multiple
*
* @var object
* @since 3.5.2
* @link https://tools.ietf.org/html/rfc7230
*/
private $singleValueResponseHeaders = array(
'status', // This is not a valid header name, but the representation used by Joomla to identify the HTTP Response Code
'content-length',
'host',
'content-type',
'content-location',
'date',
'location',
'retry-after',
'server',
'mime-version',
'last-modified',
'etag',
'accept-ranges',
'content-range',
'age',
'expires',
'clear-site-data',
'pragma',
'strict-transport-security',
'content-security-policy',
'content-security-policy-report-only',
'x-frame-options',
'x-xss-protection',
'x-content-type-options',
'referrer-policy',
'expect-ct',
'feature-policy', // @deprecated - see: https://scotthelme.co.uk/goodbye-feature-policy-and-hello-permissions-policy/
'permissions-policy',
);
/**
* Class constructor.
*
* @param Input $input An optional argument to provide dependency injection for the application's
* input object. If the argument is a \JInput object that object will become
* the application's input object, otherwise a default input object is created.
* @param Registry $config An optional argument to provide dependency injection for the application's
* config object. If the argument is a Registry object that object will become
* the application's config object, otherwise a default config object is created.
* @param \JApplicationWebClient $client An optional argument to provide dependency injection for the application's
* client object. If the argument is a \JApplicationWebClient object that object will become
* the application's client object, otherwise a default client object is created.
*
* @since 1.7.3
*/
public function __construct(Input $input = null, Registry $config = null, \JApplicationWebClient $client = null)
{
// If an input object is given use it.
if ($input instanceof Input)
{
$this->input = $input;
}
// Create the input based on the application logic.
else
{
$this->input = new Input;
}
// If a config object is given use it.
if ($config instanceof Registry)
{
$this->config = $config;
}
// Instantiate a new configuration object.
else
{
$this->config = new Registry;
}
// If a client object is given use it.
if ($client instanceof \JApplicationWebClient)
{
$this->client = $client;
}
// Instantiate a new web client object.
else
{
$this->client = new \JApplicationWebClient;
}
// Load the configuration object.
$this->loadConfiguration($this->fetchConfigurationData());
// Set the execution datetime and timestamp;
$this->set('execution.datetime', gmdate('Y-m-d H:i:s'));
$this->set('execution.timestamp', time());
// Setup the response object.
$this->response = new \stdClass;
$this->response->cachable = false;
$this->response->headers = array();
$this->response->body = array();
// Set the system URIs.
$this->loadSystemUris();
}
/**
* Returns a reference to the global WebApplication object, only creating it if it doesn't already exist.
*
* This method must be invoked as: $web = WebApplication::getInstance();
*
* @param string $name The name (optional) of the JApplicationWeb class to instantiate.
*
* @return WebApplication
*
* @since 1.7.3
*/
public static function getInstance($name = null)
{
// Only create the object if it doesn't exist.
if (empty(self::$instance))
{
if (class_exists($name) && (is_subclass_of($name, '\\Joomla\\CMS\\Application\\WebApplication')))
{
self::$instance = new $name;
}
else
{
self::$instance = new WebApplication;
}
}
return self::$instance;
}
/**
* Initialise the application.
*
* @param mixed $session An optional argument to provide dependency injection for the application's
* session object. If the argument is a \JSession object that object will become
* the application's session object, if it is false then there will be no session
* object, and if it is null then the default session object will be created based
* on the application's loadSession() method.
* @param mixed $document An optional argument to provide dependency injection for the application's
* document object. If the argument is a \JDocument object that object will become
* the application's document object, if it is false then there will be no document
* object, and if it is null then the default document object will be created based
* on the application's loadDocument() method.
* @param mixed $language An optional argument to provide dependency injection for the application's
* language object. If the argument is a \JLanguage object that object will become
* the application's language object, if it is false then there will be no language
* object, and if it is null then the default language object will be created based
* on the application's loadLanguage() method.
* @param mixed $dispatcher An optional argument to provide dependency injection for the application's
* event dispatcher. If the argument is a \JEventDispatcher object that object will become
* the application's event dispatcher, if it is null then the default event dispatcher
* will be created based on the application's loadDispatcher() method.
*
* @return WebApplication Instance of $this to allow chaining.
*
* @deprecated 4.0
* @see WebApplication::loadSession()
* @see WebApplication::loadDocument()
* @see WebApplication::loadLanguage()
* @see WebApplication::loadDispatcher()
* @since 1.7.3
*/
public function initialise($session = null, $document = null, $language = null, $dispatcher = null)
{
// Create the session based on the application logic.
if ($session !== false)
{
$this->loadSession($session);
}
// Create the document based on the application logic.
if ($document !== false)
{
$this->loadDocument($document);
}
// Create the language based on the application logic.
if ($language !== false)
{
$this->loadLanguage($language);
}
$this->loadDispatcher($dispatcher);
return $this;
}
/**
* Execute the application.
*
* @return void
*
* @since 1.7.3
*/
public function execute()
{
// Trigger the onBeforeExecute event.
$this->triggerEvent('onBeforeExecute');
// Perform application routines.
$this->doExecute();
// Trigger the onAfterExecute event.
$this->triggerEvent('onAfterExecute');
// If we have an application document object, render it.
if ($this->document instanceof \JDocument)
{
// Trigger the onBeforeRender event.
$this->triggerEvent('onBeforeRender');
// Render the application output.
$this->render();
// Trigger the onAfterRender event.
$this->triggerEvent('onAfterRender');
}
// If gzip compression is enabled in configuration and the server is compliant, compress the output.
if ($this->get('gzip') && !ini_get('zlib.output_compression') && (ini_get('output_handler') != 'ob_gzhandler'))
{
$this->compress();
}
// Trigger the onBeforeRespond event.
$this->triggerEvent('onBeforeRespond');
// Send the application response.
$this->respond();
// Trigger the onAfterRespond event.
$this->triggerEvent('onAfterRespond');
}
/**
* Rendering is the process of pushing the document buffers into the template
* placeholders, retrieving data from the document and pushing it into
* the application response buffer.
*
* @return void
*
* @since 1.7.3
*/
protected function render()
{
// Setup the document options.
$options = array(
'template' => $this->get('theme'),
'file' => $this->get('themeFile', 'index.php'),
'params' => $this->get('themeParams'),
);
if ($this->get('themes.base'))
{
$options['directory'] = $this->get('themes.base');
}
// Fall back to constants.
else
{
$options['directory'] = defined('JPATH_THEMES') ? JPATH_THEMES : (defined('JPATH_BASE') ? JPATH_BASE : __DIR__) . '/themes';
}
// Parse the document.
$this->document->parse($options);
// Render the document.
$data = $this->document->render($this->get('cache_enabled'), $options);
// Set the application output data.
$this->setBody($data);
}
/**
* Checks the accept encoding of the browser and compresses the data before
* sending it to the client if possible.
*
* @return void
*
* @since 1.7.3
*/
protected function compress()
{
// Supported compression encodings.
$supported = array(
'x-gzip' => 'gz',
'gzip' => 'gz',
'deflate' => 'deflate',
);
// Get the supported encoding.
$encodings = array_intersect($this->client->encodings, array_keys($supported));
// If no supported encoding is detected do nothing and return.
if (empty($encodings))
{
return;
}
// Verify that headers have not yet been sent, and that our connection is still alive.
if ($this->checkHeadersSent() || !$this->checkConnectionAlive())
{
return;
}
// Iterate through the encodings and attempt to compress the data using any found supported encodings.
foreach ($encodings as $encoding)
{
if (($supported[$encoding] == 'gz') || ($supported[$encoding] == 'deflate'))
{
// Verify that the server supports gzip compression before we attempt to gzip encode the data.
if (!extension_loaded('zlib') || ini_get('zlib.output_compression'))
{
continue;
}
// Attempt to gzip encode the data with an optimal level 4.
$data = $this->getBody();
$gzdata = gzencode($data, 4, ($supported[$encoding] == 'gz') ? FORCE_GZIP : FORCE_DEFLATE);
// If there was a problem encoding the data just try the next encoding scheme.
if ($gzdata === false)
{
continue;
}
// Set the encoding headers.
$this->setHeader('Content-Encoding', $encoding);
$this->setHeader('Vary', 'Accept-Encoding');
// Header will be removed at 4.0
if ($this->get('MetaVersion'))
{
$this->setHeader('X-Content-Encoded-By', 'Joomla');
}
// Replace the output with the encoded data.
$this->setBody($gzdata);
// Compression complete, let's break out of the loop.
break;
}
}
}
/**
* Method to send the application response to the client. All headers will be sent prior to the main
* application output data.
*
* @return void
*
* @since 1.7.3
*/
protected function respond()
{
// Send the content-type header.
$this->setHeader('Content-Type', $this->mimeType . '; charset=' . $this->charSet);
// If the response is set to uncachable, we need to set some appropriate headers so browsers don't cache the response.
if (!$this->response->cachable)
{
// Expires in the past.
$this->setHeader('Expires', 'Wed, 17 Aug 2005 00:00:00 GMT', true);
// Always modified.
$this->setHeader('Last-Modified', gmdate('D, d M Y H:i:s') . ' GMT', true);
$this->setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0', false);
// HTTP 1.0
$this->setHeader('Pragma', 'no-cache');
}
else
{
// Expires.
$this->setHeader('Expires', gmdate('D, d M Y H:i:s', time() + 900) . ' GMT');
// Last modified.
if ($this->modifiedDate instanceof \JDate)
{
$this->setHeader('Last-Modified', $this->modifiedDate->format('D, d M Y H:i:s', false, false) . ' GMT');
}
}
$this->sendHeaders();
echo $this->getBody();
}
/**
* Redirect to another URL.
*
* If the headers have not been sent the redirect will be accomplished using a "301 Moved Permanently"
* or "303 See Other" code in the header pointing to the new location. If the headers have already been
* sent this will be accomplished using a JavaScript statement.
*
* @param string $url The URL to redirect to. Can only be http/https URL.
* @param integer $status The HTTP 1.1 status code to be provided. 303 is assumed by default.
*
* @return void
*
* @since 1.7.3
*/
public function redirect($url, $status = 303)
{
// Check for relative internal links.
if (preg_match('#^index\.php#', $url))
{
// We changed this from "$this->get('uri.base.full') . $url" due to the inability to run the system tests with the original code
$url = \JUri::base() . $url;
}
// Perform a basic sanity check to make sure we don't have any CRLF garbage.
$url = preg_split("/[\r\n]/", $url);
$url = $url[0];
/*
* Here we need to check and see if the URL is relative or absolute. Essentially, do we need to
* prepend the URL with our base URL for a proper redirect. The rudimentary way we are looking
* at this is to simply check whether or not the URL string has a valid scheme or not.
*/
if (!preg_match('#^[a-z]+\://#i', $url))
{
// Get a \JUri instance for the requested URI.
$uri = \JUri::getInstance($this->get('uri.request'));
// Get a base URL to prepend from the requested URI.
$prefix = $uri->toString(array('scheme', 'user', 'pass', 'host', 'port'));
// We just need the prefix since we have a path relative to the root.
if ($url[0] == '/')
{
$url = $prefix . $url;
}
// It's relative to where we are now, so lets add that.
else
{
$parts = explode('/', $uri->toString(array('path')));
array_pop($parts);
$path = implode('/', $parts) . '/';
$url = $prefix . $path . $url;
}
}
// If the headers have already been sent we need to send the redirect statement via JavaScript.
if ($this->checkHeadersSent())
{
echo "<script>document.location.href=" . json_encode(str_replace("'", ''', $url)) . ";</script>\n";
}
else
{
// We have to use a JavaScript redirect here because MSIE doesn't play nice with utf-8 URLs.
if (($this->client->engine == \JApplicationWebClient::TRIDENT) && !StringHelper::is_ascii($url))
{
$html = '<html><head>';
$html .= '<meta http-equiv="content-type" content="text/html; charset=' . $this->charSet . '" />';
$html .= '<script>document.location.href=' . json_encode(str_replace("'", ''', $url)) . ';</script>';
$html .= '</head><body></body></html>';
echo $html;
}
else
{
// Check if we have a boolean for the status variable for compatibility with old $move parameter
// @deprecated 4.0
if (is_bool($status))
{
$status = $status ? 301 : 303;
}
// Now check if we have an integer status code that maps to a valid redirect. If we don't then set a 303
// @deprecated 4.0 From 4.0 if no valid status code is given an InvalidArgumentException will be thrown
if (!is_int($status) || !$this->isRedirectState($status))
{
$status = 303;
}
// All other cases use the more efficient HTTP header for redirection.
$this->setHeader('Status', $status, true);
$this->setHeader('Location', $url, true);
}
}
// Trigger the onBeforeRespond event.
$this->triggerEvent('onBeforeRespond');
// Set appropriate headers
$this->respond();
// Trigger the onAfterRespond event.
$this->triggerEvent('onAfterRespond');
// Close the application after the redirect.
$this->close();
}
/**
* Checks if a state is a redirect state
*
* @param integer $state The HTTP 1.1 status code.
*
* @return boolean
*
* @since 3.8.0
*/
protected function isRedirectState($state)
{
$state = (int) $state;
return ($state > 299 && $state < 400);
}
/**
* Load an object or array into the application configuration object.
*
* @param mixed $data Either an array or object to be loaded into the configuration object.
*
* @return WebApplication Instance of $this to allow chaining.
*
* @since 1.7.3
*/
public function loadConfiguration($data)
{
// Load the data into the configuration object.
if (is_array($data))
{
$this->config->loadArray($data);
}
elseif (is_object($data))
{
$this->config->loadObject($data);
}
return $this;
}
/**
* Set/get cachable state for the response. If $allow is set, sets the cachable state of the
* response. Always returns the current state.
*
* @param boolean $allow True to allow browser caching.
*
* @return boolean
*
* @since 1.7.3
*/
public function allowCache($allow = null)
{
if ($allow !== null)
{
$this->response->cachable = (bool) $allow;
}
return $this->response->cachable;
}
/**
* Method to set a response header. If the replace flag is set then all headers
* with the given name will be replaced by the new one. The headers are stored
* in an internal array to be sent when the site is sent to the browser.
*
* @param string $name The name of the header to set.
* @param string $value The value of the header to set.
* @param boolean $replace True to replace any headers with the same name.
*
* @return WebApplication Instance of $this to allow chaining.
*
* @since 1.7.3
*/
public function setHeader($name, $value, $replace = false)
{
// Sanitize the input values.
$name = (string) $name;
$value = (string) $value;
// Create an array of duplicate header names
$keys = false;
if ($this->response->headers)
{
$names = array();
foreach ($this->response->headers as $key => $header)
{
$names[$key] = $header['name'];
}
// Find existing headers by name
$keys = array_keys($names, $name);
}
// Remove if $replace is true and there are duplicate names
if ($replace && $keys)
{
$this->response->headers = array_diff_key($this->response->headers, array_flip($keys));
}
/*
* If no keys found, safe to insert (!$keys)
* If ($keys && $replace) it's a replacement and previous have been deleted
* If ($keys && !in_array...) it's a multiple value header
*/
$single = in_array(strtolower($name), $this->singleValueResponseHeaders);
if ($value && (!$keys || ($keys && ($replace || !$single))))
{
// Add the header to the internal array.
$this->response->headers[] = array('name' => $name, 'value' => $value);
}
return $this;
}
/**
* Method to get the array of response headers to be sent when the response is sent
* to the client.
*
* @return array *
*
* @since 1.7.3
*/
public function getHeaders()
{
return $this->response->headers;
}
/**
* Method to clear any set response headers.
*
* @return WebApplication Instance of $this to allow chaining.
*
* @since 1.7.3
*/
public function clearHeaders()
{
$this->response->headers = array();
return $this;
}
/**
* Send the response headers.
*
* @return WebApplication Instance of $this to allow chaining.
*
* @since 1.7.3
*/
public function sendHeaders()
{
if (!$this->checkHeadersSent())
{
// Creating an array of headers, making arrays of headers with multiple values
$val = array();
foreach ($this->response->headers as $header)
{
if ('status' == strtolower($header['name']))
{
// 'status' headers indicate an HTTP status, and need to be handled slightly differently
$status = $this->getHttpStatusValue($header['value']);
$this->header($status, true, (int) $header['value']);
}
else
{
$val[$header['name']] = !isset($val[$header['name']]) ? $header['value'] : implode(', ', array($val[$header['name']], $header['value']));
$this->header($header['name'] . ': ' . $val[$header['name']], true);
}
}
}
return $this;
}
/**
* Check if a given value can be successfully mapped to a valid http status value
*
* @param string $value The given status as int or string
*
* @return string
*
* @since 3.8.0
*/
protected function getHttpStatusValue($value)
{
$code = (int) $value;
if (array_key_exists($code, $this->responseMap))
{
return $this->responseMap[$code];
}
return 'HTTP/1.1 ' . $code;
}
/**
* Set body content. If body content already defined, this will replace it.
*
* @param string $content The content to set as the response body.
*
* @return WebApplication Instance of $this to allow chaining.
*
* @since 1.7.3
*/
public function setBody($content)
{
$this->response->body = array((string) $content);
return $this;
}
/**
* Prepend content to the body content
*
* @param string $content The content to prepend to the response body.
*
* @return WebApplication Instance of $this to allow chaining.
*
* @since 1.7.3
*/
public function prependBody($content)
{
array_unshift($this->response->body, (string) $content);
return $this;
}
/**
* Append content to the body content
*
* @param string $content The content to append to the response body.
*
* @return WebApplication Instance of $this to allow chaining.
*
* @since 1.7.3
*/
public function appendBody($content)
{
$this->response->body[] = (string) $content;
return $this;
}
/**
* Return the body content
*
* @param boolean $asArray True to return the body as an array of strings.
*
* @return mixed The response body either as an array or concatenated string.
*
* @since 1.7.3
*/
public function getBody($asArray = false)
{
return $asArray ? $this->response->body : implode((array) $this->response->body);
}
/**
* Method to get the application document object.
*
* @return \JDocument The document object
*
* @since 1.7.3
*/
public function getDocument()
{
return $this->document;
}
/**
* Method to get the application language object.
*
* @return \JLanguage The language object
*
* @since 1.7.3
*/
public function getLanguage()
{
return $this->language;
}
/**
* Method to get the application session object.
*
* @return \JSession The session object
*
* @since 1.7.3
*/
public function getSession()
{
return $this->session;
}
/**
* Method to check the current client connection status to ensure that it is alive. We are
* wrapping this to isolate the connection_status() function from our code base for testing reasons.
*
* @return boolean True if the connection is valid and normal.
*
* @see connection_status()
* @since 1.7.3
*/
protected function checkConnectionAlive()
{
return connection_status() === CONNECTION_NORMAL;
}
/**
* Method to check to see if headers have already been sent. We are wrapping this to isolate the
* headers_sent() function from our code base for testing reasons.
*
* @return boolean True if the headers have already been sent.
*
* @see headers_sent()
* @since 1.7.3
*/
protected function checkHeadersSent()
{
return headers_sent();
}
/**
* Method to detect the requested URI from server environment variables.
*
* @return string The requested URI
*
* @since 1.7.3
*/
protected function detectRequestUri()
{
// First we need to detect the URI scheme.
if (isset($_SERVER['HTTPS']) && !empty($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS']) != 'off'))
{
$scheme = 'https://';
}
else
{
$scheme = 'http://';
}
/*
* There are some differences in the way that Apache and IIS populate server environment variables. To
* properly detect the requested URI we need to adjust our algorithm based on whether or not we are getting
* information from Apache or IIS.
*/
// Define variable to return
$uri = '';
// If PHP_SELF and REQUEST_URI are both populated then we will assume "Apache Mode".
if (!empty($_SERVER['PHP_SELF']) && !empty($_SERVER['REQUEST_URI']))
{
// The URI is built from the HTTP_HOST and REQUEST_URI environment variables in an Apache environment.
$uri = $scheme . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
}
// If not in "Apache Mode" we will assume that we are in an IIS environment and proceed.
elseif (isset($_SERVER['HTTP_HOST']))
{
// IIS uses the SCRIPT_NAME variable instead of a REQUEST_URI variable... thanks, MS
$uri = $scheme . $_SERVER['HTTP_HOST'] . $_SERVER['SCRIPT_NAME'];
// If the QUERY_STRING variable exists append it to the URI string.
if (isset($_SERVER['QUERY_STRING']) && !empty($_SERVER['QUERY_STRING']))
{
$uri .= '?' . $_SERVER['QUERY_STRING'];
}
}
return trim($uri);
}
/**
* Method to load a PHP configuration class file based on convention and return the instantiated data object. You
* will extend this method in child classes to provide configuration data from whatever data source is relevant
* for your specific application.
*
* @param string $file The path and filename of the configuration file. If not provided, configuration.php
* in JPATH_CONFIGURATION will be used.
* @param string $class The class name to instantiate.
*
* @return mixed Either an array or object to be loaded into the configuration object.
*
* @since 1.7.3
* @throws \RuntimeException
*/
protected function fetchConfigurationData($file = '', $class = '\JConfig')
{
// Instantiate variables.
$config = array();
if (empty($file))
{
$file = JPATH_CONFIGURATION . '/configuration.php';
// Applications can choose not to have any configuration data
// by not implementing this method and not having a config file.
if (!file_exists($file))
{
$file = '';
}
}
if (!empty($file))
{
\JLoader::register($class, $file);
if (class_exists($class))
{
$config = new $class;
}
else
{
throw new \RuntimeException('Configuration class does not exist.');
}
}
return $config;
}
/**
* Flush the media version to refresh versionable assets
*
* @return void
*
* @since 3.2
*/
public function flushAssets()
{
$version = new \JVersion;
$version->refreshMediaVersion();
}
/**
* Method to send a header to the client. We are wrapping this to isolate the header() function
* from our code base for testing reasons.
*
* @param string $string The header string.
* @param boolean $replace The optional replace parameter indicates whether the header should
* replace a previous similar header, or add a second header of the same type.
* @param integer $code Forces the HTTP response code to the specified value. Note that
* this parameter only has an effect if the string is not empty.
*
* @return void
*
* @see header()
* @since 1.7.3
*/
protected function header($string, $replace = true, $code = null)
{
$string = str_replace(chr(0), '', $string);
if ($code === null)
{
$code = 0;
}
header($string, $replace, $code);
}
/**
* Determine if we are using a secure (SSL) connection.
*
* @return boolean True if using SSL, false if not.
*
* @since 3.0.1
*/
public function isSSLConnection()
{
return (isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on')) || getenv('SSL_PROTOCOL_VERSION');
}
/**
* Allows the application to load a custom or default document.
*
* The logic and options for creating this object are adequately generic for default cases
* but for many applications it will make sense to override this method and create a document,
* if required, based on more specific needs.
*
* @param \JDocument $document An optional document object. If omitted, the factory document is created.
*
* @return WebApplication This method is chainable.
*
* @since 1.7.3
*/
public function loadDocument(\JDocument $document = null)
{
$this->document = ($document === null) ? \JFactory::getDocument() : $document;
return $this;
}
/**
* Allows the application to load a custom or default language.
*
* The logic and options for creating this object are adequately generic for default cases
* but for many applications it will make sense to override this method and create a language,
* if required, based on more specific needs.
*
* @param \JLanguage $language An optional language object. If omitted, the factory language is created.
*
* @return WebApplication This method is chainable.
*
* @since 1.7.3
*/
public function loadLanguage(\JLanguage $language = null)
{
$this->language = ($language === null) ? \JFactory::getLanguage() : $language;
return $this;
}
/**
* Allows the application to load a custom or default session.
*
* The logic and options for creating this object are adequately generic for default cases
* but for many applications it will make sense to override this method and create a session,
* if required, based on more specific needs.
*
* @param \JSession $session An optional session object. If omitted, the session is created.
*
* @return WebApplication This method is chainable.
*
* @since 1.7.3
*/
public function loadSession(\JSession $session = null)
{
if ($session !== null)
{
$this->session = $session;
return $this;
}
// Generate a session name.
$name = md5($this->get('secret') . $this->get('session_name', get_class($this)));
// Calculate the session lifetime.
$lifetime = (($this->get('sess_lifetime')) ? $this->get('sess_lifetime') * 60 : 900);
// Get the session handler from the configuration.
$handler = $this->get('sess_handler', 'none');
// Initialize the options for \JSession.
$options = array(
'name' => $name,
'expire' => $lifetime,
'force_ssl' => $this->get('force_ssl'),
);
$this->registerEvent('onAfterSessionStart', array($this, 'afterSessionStart'));
// Instantiate the session object.
$session = \JSession::getInstance($handler, $options);
$session->initialise($this->input, $this->dispatcher);
if ($session->getState() == 'expired')
{
$session->restart();
}
else
{
$session->start();
}
// Set the session object.
$this->session = $session;
return $this;
}
/**
* After the session has been started we need to populate it with some default values.
*
* @return void
*
* @since 3.0.1
*/
public function afterSessionStart()
{
$session = \JFactory::getSession();
if ($session->isNew())
{
$session->set('registry', new Registry);
$session->set('user', new \JUser);
}
}
/**
* Method to load the system URI strings for the application.
*
* @param string $requestUri An optional request URI to use instead of detecting one from the
* server environment variables.
*
* @return void
*
* @since 1.7.3
*/
protected function loadSystemUris($requestUri = null)
{
// Set the request URI.
if (!empty($requestUri))
{
$this->set('uri.request', $requestUri);
}
else
{
$this->set('uri.request', $this->detectRequestUri());
}
// Check to see if an explicit base URI has been set.
$siteUri = trim($this->get('site_uri', ''));
if ($siteUri != '')
{
$uri = \JUri::getInstance($siteUri);
$path = $uri->toString(array('path'));
}
// No explicit base URI was set so we need to detect it.
else
{
// Start with the requested URI.
$uri = \JUri::getInstance($this->get('uri.request'));
// If we are working from a CGI SAPI with the 'cgi.fix_pathinfo' directive disabled we use PHP_SELF.
if (strpos(php_sapi_name(), 'cgi') !== false && !ini_get('cgi.fix_pathinfo') && !empty($_SERVER['REQUEST_URI']))
{
// We aren't expecting PATH_INFO within PHP_SELF so this should work.
$path = dirname($_SERVER['PHP_SELF']);
}
// Pretty much everything else should be handled with SCRIPT_NAME.
else
{
$path = dirname($_SERVER['SCRIPT_NAME']);
}
}
$host = $uri->toString(array('scheme', 'user', 'pass', 'host', 'port'));
// Check if the path includes "index.php".
if (strpos($path, 'index.php') !== false)
{
// Remove the index.php portion of the path.
$path = substr_replace($path, '', strpos($path, 'index.php'), 9);
}
$path = rtrim($path, '/\\');
// Set the base URI both as just a path and as the full URI.
$this->set('uri.base.full', $host . $path . '/');
$this->set('uri.base.host', $host);
$this->set('uri.base.path', $path . '/');
// Set the extended (non-base) part of the request URI as the route.
if (stripos($this->get('uri.request'), $this->get('uri.base.full')) === 0)
{
$this->set('uri.route', substr_replace($this->get('uri.request'), '', 0, strlen($this->get('uri.base.full'))));
}
// Get an explicitly set media URI is present.
$mediaURI = trim($this->get('media_uri', ''));
if ($mediaURI)
{
if (strpos($mediaURI, '://') !== false)
{
$this->set('uri.media.full', $mediaURI);
$this->set('uri.media.path', $mediaURI);
}
else
{
// Normalise slashes.
$mediaURI = trim($mediaURI, '/\\');
$mediaURI = !empty($mediaURI) ? '/' . $mediaURI . '/' : '/';
$this->set('uri.media.full', $this->get('uri.base.host') . $mediaURI);
$this->set('uri.media.path', $mediaURI);
}
}
// No explicit media URI was set, build it dynamically from the base uri.
else
{
$this->set('uri.media.full', $this->get('uri.base.full') . 'media/');
$this->set('uri.media.path', $this->get('uri.base.path') . 'media/');
}
}
}