<?php
/**
* Wave Framework <http://www.waveframework.com>
* Data Handler
*
* Data Handler is loaded in situations when other handlers were not used, which is most commonly for
* regular web page requests. Data Handler takes all the input from GET, POST, FILES; SESSION and
* COOKIE variables, loads Wave Framework API and sends all the input to the API. It first uses URL
* Controller to find out what page the user agent is looking for and then a View Controller to
* generate that requested page.
*
* @package Index Gateway
* @author Kristo Vaher <kristo@waher.net>
* @copyright Copyright (c) 2012, Kristo Vaher
* @license GNU Lesser General Public License Version 3
* @tutorial /doc/pages/handler_data.htm
* @since 1.5.0
* @version 3.6.0
*/
// INITIALIZATION
// Stopping all requests that did not come from Index Gateway
if(!isset($resourceAddress)){
header('HTTP/1.1 403 Forbidden');
die();
}
// If access control header is set in configuration
if(isset($config['access-control'])){
header('Access-Control-Allow-Origin: '.$config['access-control']);
}
// This stores request header based cache timeout
$cacheLoad=-1;
// Setting cache timeout for HTTP request, used by Data Handler
if(isset($_SERVER['HTTP_CACHE_CONTROL'])){
if(trim($_SERVER['HTTP_CACHE_CONTROL'])=='no-cache'){
$cacheLoad=0;
} else {
// Finding the amount of allowed seconds
$raw=trim(str_replace('max-age=','',$_SERVER['HTTP_CACHE_CONTROL']));
if(is_numeric($raw)){
$cacheLoad=$raw;
}
}
}
// If index URL cache is not configured, it is turned off by default
if(!isset($config['index-url-cache-timeout'])){
$config['index-url-cache-timeout']=0;
}
// State class is used by API and Factory created objects to keep track of request state
require(__ROOT__.'engine'.DIRECTORY_SEPARATOR.'class.www-state.php');
$state=new WWW_State($config);
// DATABASE AND SESSIONS
// This holds link to database
$databaseConnection=false;
// Connecting to database, if configuration is set
if(isset($config['database-name'],$config['database-type'],$config['database-host'],$config['database-username'],$config['database-password'])){
// Including the required class and creating the object
require(__ROOT__.'engine'.DIRECTORY_SEPARATOR.'class.www-database.php');
$databaseConnection=new WWW_Database($config['database-type'],$config['database-host'],$config['database-name'],$config['database-username'],$config['database-password'],((isset($config['database-errors']))?$config['database-errors']:false),((isset($config['database-persistent']))?$config['database-persistent']:false));
// Passing the database to State object
$state->databaseConnection=$databaseConnection;
}
// Loading sessions class
require(__ROOT__.'engine'.DIRECTORY_SEPARATOR.'class.www-sessions.php');
// Loading sessions class with the session namespace
$state->sessionHandler=new WWW_Sessions($state->data['session-name'],$state->data['session-lifetime'],$databaseConnection);
// Assigning session data to State
if(!empty($state->sessionHandler->sessionData)){
$state->data['session-original-data']=$state->sessionHandler->sessionData;
$state->data['session-data']=$state->sessionHandler->sessionData;
}
// AUTOLOAD AND SESSIONS FUNCTIONALITY
// This functions file is not required, but can be used for system wide functions
// If you want to include additional libraries, do so here
if(file_exists(__ROOT__.'overrides'.DIRECTORY_SEPARATOR.'resources'.DIRECTORY_SEPARATOR.'scripts'.DIRECTORY_SEPARATOR.'script.php')){
require(__ROOT__.'overrides'.DIRECTORY_SEPARATOR.'resources'.DIRECTORY_SEPARATOR.'scripts'.DIRECTORY_SEPARATOR.'script.php');
} elseif(file_exists(__ROOT__.'resources'.DIRECTORY_SEPARATOR.'scripts'.DIRECTORY_SEPARATOR.'script.php')) {
require(__ROOT__.'resources'.DIRECTORY_SEPARATOR.'scripts'.DIRECTORY_SEPARATOR.'script.php');
}
// LOADING API AND CALLING URL SOLVING/ROUTING CONTROLLER
// API is used to process all requests and it handles caching and API validations
require(__ROOT__.'engine'.DIRECTORY_SEPARATOR.'class.www-api.php');
$api=new WWW_API($state);
// This uses current request URI to find out which view should be loaded, by default it uses the request set by State
// API check is turned off, since index.php is considered a public gateway
$view=$api->command(array('url'=>$state->data['true-request'],'www-command'=>'url-solve','www-output'=>0,'www-return-type'=>'php','www-cache-timeout'=>$config['index-url-cache-timeout'],'www-cache-load-timeout'=>$cacheLoad),false,false,true);
// CALLING DEFAULT VIEW CONTROLLER IF URL DID NOT ORDER A REDIRECTION
// If view data includes flags for redirection then the view itself will be ignored
if(isset($view['view']) && !isset($view['www-temporary-redirect']) && !isset($view['www-permanent-redirect'])){
// Notifying State of View data
$state->setState(array(array('view'=>$view,'language'=>$view['language'])));
// All the data sent by the user agent is stored in this variable
$inputData=array();
// All the data sent by user agent is added here and merged into one array
if(!empty($_POST)){
$inputData=$_POST;
}
if(!empty($_GET)){
$inputData+=$_GET;
}
if(!empty($_FILES)){
$inputData+=$_FILES;
}
if(!empty($_COOKIE)){
$inputData+=$_COOKIE;
}
// Removing input stream related data
unset($inputData['www-xml'],$inputData['www-json']);
// If index view cache is not configured, it is turned of by default
if(isset($view['cache-timeout'])){
$config['index-view-cache-timeout']=$view['cache-timeout'];
} elseif(!isset($config['index-view-cache-timeout'])){
$config['index-view-cache-timeout']=0;
}
// API check is turned off, since index.php is considered a public gateway
$api->command(array('www-command'=>$view['controller'].'-'.$view['controller-method'],'www-request'=>$state->data['true-request'],'www-return-type'=>'html','www-cache-tags'=>((isset($view['cache-tag']))?$view['cache-tag']:''),'www-cache-timeout'=>$config['index-view-cache-timeout'],'www-cache-load-timeout'=>$cacheLoad)+$inputData,false,false,true);
}
// LOGGER
// API gathers its own log data internally and it is given to Logger to be logged
if(isset($logger)){
$logger->setCustomLogData(array('category'=>'data','database-query-counter'=>(($databaseConnection)?$databaseConnection->queryCounter:0))+$api->apiLoggerData);
$logger->writeLog();
}
?>
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