core.inc

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<?php
/**************************************************************
 
 Copyright (c) 2010 Sonjara, Inc
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
 files (the "Software"), to deal in the Software without
 restriction, including without limitation the rights to use,
 copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the
 Software is furnished to do so, subject to the following
 conditions:
 
 The above copyright notice and this permission notice shall be
 included in all copies or substantial portions of the Software.
 
 Except as contained in this notice, the name(s) of the above 
 copyright holders shall not be used in advertising or otherwise 
 to promote the sale, use or other dealings in this Software 
 without prior written authorization.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 OTHER DEALINGS IN THE SOFTWARE.
 
*****************************************************************/
 
 
// Ensure that short open tags are enabled.
ini_set("short_open_tag", 1);
 
register_shutdown_function(array('Fakoli', 'shutdownHandler'));
 
require_once realpath(dirname(__FILE__)."/../framework/data_item.inc");
require_once realpath(dirname(__FILE__)."/../framework/cache.inc");
require_once realpath(dirname(__FILE__)."/components/component/datamodel/component.inc");
 
// Default Font Awesome URL - free CDN version
$fontawesome = "https://use.fontawesome.com/releases/v5.1.1/css/all.css";
 
class FakoliException extends Exception {}
 
class FakoliEarlyExit extends Exception {}
 
 
class FakoliEventNotConsumed extends Exception {}
 
class Fakoli
{
     static $componentsUsed = array();  
     static $scanning = false;               
     static $outputBufferLevel = 0;          
     static $rollbackBuffers = true;         
     static $storage = array();              
     static $timestamp;                      
     static $requestStartTime;               
     static $requestURI;                     
     static $bodyClass = "";                 
 
     static function put($key, $obj) { Fakoli::$storage[$key] = $obj; }
     
     static function get($key) { return Fakoli::$storage[$key]; }
     static function using()
     {
          global $config;
          
          $num = func_num_args();
          for($i = 0; $i < $num; ++$i)
          {
               $component = func_get_arg($i);
               
               if (array_key_exists($component, Fakoli::$componentsUsed)) continue;
          
          Fakoli::$componentsUsed[$component] = true;
               
               $includes = Cache::get("fakoli_includes_$component");
               if ($includes)
               {
                    if ($config['strict_includes'])
                    {
                         foreach ($includes as $include)
                         {
                              require_once $include;
                         }
                    }
                    else
                    {
                         foreach ($includes as $include)
                         {
                              include_once $include;
                         }
                    }                   
                    continue;
               }
     
               $components = Fakoli::getComponents();
               
               if (!$components[$component])
               {
                    trace("Attempt to reference unknown or disabled component '$component'", 2);
                    continue;
               }
               
               $includes = array();
               
               $c = $components[$component];
               
               $dm = $c->component_path . DIRECTORY_SEPARATOR . "datamodel";
               if (is_dir($dm))
               {
                    $handle = opendir($dm);
                    while(false !== ($file = readdir($handle))) 
               {
                    if (endsWith($file, ".inc"))
                    {
                         $f = $dm . DIRECTORY_SEPARATOR . $file;
 
                         $includes[] = $f;
                         require_once $f;
                    }
               }
               
               closedir($handle);
               }
               
               trace($c->component_path, 4);
               
               $handle = opendir($c->component_path);
     
               if (!$handle) continue;
               
               while(false !== ($file = readdir($handle))) 
          {
               if (endsWith($file, ".inc"))
               {
                    $f = $c->component_path . DIRECTORY_SEPARATOR . $file;
 
                    $includes[] = $f;
                    require_once $f;
               }
          }
          
          closedir($handle);
          
          Cache::put("fakoli_includes_$component", $includes);        
          }
     }
     
     static function getComponents()
     {
          $components = Cache::get("fakoli_components");
          
          if (!$components)
          {
               $component = new Component();
               if (!$component->tableExists()) Fakoli::bootstrap();
          
               $components = indexedQuery(Component, "WHERE enabled=1", "name");
               if (count($components) == 0)
               {
                    Fakoli::initialComponentScan();
                    $components = Cache::get("fakoli_components");
               }
               else
               {
                    Cache::put("fakoli_components", $components);
               }
          }
          
          return $components;
     }
     
     static function getComponent($name)
     {
          $components = Fakoli::getComponents();
          return $components[$name];
     }
     
     static function componentExists($name)
     {
          return array_key_exists($name, Fakoli::getComponents());
     }
     
     static function initialComponentScan()
     {
          global $config;
          
          require_once realpath(dirname(__FILE__)."/components/component/datamodel/component.inc");
          require_once realpath(dirname(__FILE__)."/components/component/datamodel/component_page.inc");
          require_once realpath(dirname(__FILE__)."/components/component/datamodel/admin_page.inc");
          require_once realpath(dirname(__FILE__)."/components/component/datamodel/component_update_log.inc");
          require_once realpath(dirname(__FILE__)."/components/component/serialization_manager.inc");
          require_once realpath(dirname(__FILE__)."/components/component/component_manager.inc");
          require_once realpath(dirname(__FILE__)."/components/component/upgrade_manager.inc");
          require_once realpath(dirname(__FILE__)."/components/component/component_upgrade_manager.inc");
          
          $mgr = new ComponentManager();
          $mgr->scan($config["scan_verbosity"]);
     }
     
     static function bootstrap()
     {
          require_once realpath(dirname(__FILE__)."/components/component/datamodel/component.inc");
          require_once realpath(dirname(__FILE__)."/components/component/datamodel/component_page.inc");
          require_once realpath(dirname(__FILE__)."/components/component/datamodel/admin_page.inc");
          require_once realpath(dirname(__FILE__)."/components/component/datamodel/component_update_log.inc");
          require_once realpath(dirname(__FILE__)."/components/component/serialization_manager.inc");
          require_once realpath(dirname(__FILE__)."/components/component/component_manager.inc");
          require_once realpath(dirname(__FILE__)."/components/component/upgrade_manager.inc");
          require_once realpath(dirname(__FILE__)."/components/component/component_upgrade_manager.inc");
          
          $mgr = new ComponentUpgradeManager();
          $mgr->bootstrap();
     }    
          
     static function assertRole($role, $redirect = "", $message = "")
     {
          global $user;
          global $isAction;
          
          if (!$redirect && !$message) $redirect = "/index";
          
          if (!checkRole($role))
          {
               if ($redirect)
               {
                    if (!$user)
                    {
                         $mgr = new LoginManager();
                         $mgr->storeRedirectPage();
                    }
     
                    redirect($redirect);
               }
               else
               {
                    if ($isAction)
                    {
                         Fakoli::end($message);
                    }
                    else
                    {
                         throw new FakoliException($message);
                    }
               }
          }
     }
     
     static function checkRole($role, $msg = null)
     {
          $access = checkRole($role);
          if (!$access && $msg) throw new FakoliException($msg);
          return $access;
     }
     
     static function isUserActive($user)
     {
          $mgr = new UserManager();
          if (method_exists($mgr, "isActive")) return $mgr->isActive($user);
          if ($user->hasField("active")) return $user->active;
          return false;
     }
     
     static function getLocalIP()
     {
          $ip = Settings::getValue("settings", "local_IP_address");
          return ($ip) ? $ip : $_SERVER["SERVER_ADDR"];
     }
     
     static function usingFile()
     {
          $num = func_num_args();
          
          for($i = 0; $i < $num; ++$i)
          {
               $file = func_get_arg($i);
               
               $f = realpath(dirname(__FILE__)."/../$file");
               require_once $f;
          }
     }
     
     static function usingFeature()
     {
          $num = func_num_args();
          
          for($i = 0; $i < $num; ++$i)
          {
               $file = func_get_arg($i);
               
               $f = realpath(dirname(__FILE__)."/../framework/{$file}.inc");
               require_once $f;
          }
     }    
 
     static function getAdminMenu()
     {
          $menu = Cache::get("fakoli_admin_menu");
          if ($menu) return $menu;
          
          $menu = array("Site Content"            => array(),
                           "Site Configuration"        => array(),
                           "Collaboration"             => array(),    
                           "Classification"            => array(),
                           "Email Management"          => array(),
                           "User Management"           => array());        
          
          $components = Fakoli::getComponents();
          foreach($components as $name => $component)
          {
               $manifest = $component->loadManifest();
               if (method_exists($manifest, getAdminMenu))
               {
                    $componentMenuItems = $manifest->getAdminMenu();
                    if ($componentMenuItems)
                    {
                         foreach($componentMenuItems as $category => $items)
                         {
                              if (!$menu[$category])
                              {
                                   $menu[$category] = $items;
                              }
                              else
                              {    
                                   $menu[$category] = array_merge($menu[$category], $items);
                              }
                         }              
                    }
               }
          }
          
          foreach($menu as $category => $items)
          {
               uasort($menu[$category], array(Fakoli, compareByWeight));
          }
          
          Cache::put("fakoli_admin_menu", $menu);
          
          return $menu;
     }
     
     static function getAdminIcons()
     {
          $icons = Cache::get("fakoli_admin_icons");
          if ($icons) return $icons;
          
          $icons = array("Site Content"      => "file-alt",
                            "Site Configuration"  => "cogs",
                            "Collaboration"       => "comments", 
                            "Classification"      => "tags",
                            "Email Management"    => "envelope",
                            "User Management"     => "users",
                            "Users"                    => "user",
                            "Public Site"         => "home"
          );
          
          $icons = ComponentManager::fireEvent("RegisterAdminIcons", $icons);
          
          Cache::put("fakoli_admin_icons", $icons);
          return $icons;
     }
     
     private static function getAdminPageRoles()
     {
          $pageRoles = Cache::get("fakoli_admin_page_roles");
          if ($pageRoles) return $pageRoles;
          
          $pageRoles = array();
          $components = Fakoli::getComponents();
          foreach($components as $name => $component)
          {
               $manifest = $component->loadManifest();
          
               if (method_exists($manifest, "getAdminPageRoles"))
               {
                    $pageRoles = array_merge($pageRoles, $manifest->getAdminPageRoles());
               }
          }
 
          Cache::put("fakoli_admin_page_roles", $pageRoles);
          
          return $pageRoles;
     }
     
     function getAdminPageRole($identifier)
     {
          $uri = "/admin/$identifier";
          
          $role = "admin";
          $menu = Fakoli::getAdminMenu();
          foreach($menu as $heading => $items)
          {
               foreach($items as $item)
               {
                    if ($item["page"] == $uri)
                    {
                         if ($item["role"]) 
                         {
                              $role = $item["role"];
                              break;
                         }
                    }
               }
          }
          
          trace("###Role: $role", 3);
          
          $pageRoles = Fakoli::getAdminPageRoles();
          trace(print_r($pageRoles, true), 3);
          
          if ($pageRoles[$uri])
          {
               $role = $pageRoles[$uri];
          }
          
          trace("###ADMIN PAGE ROLE: $identifier $role", 3);
          return $role;       
     }    
     
     private static $includedScripts = array();
     
     static function getScripts()
     {
          $scripts = Cache::get("fakoli_scripts");
          if ($scripts) return $scripts;
          
          $scriptArray = Fakoli::loadScripts();
          foreach($scriptArray as $s)
          {
               Fakoli::$includedScripts[$s] = true;
          }
          
          $scriptArray = ComponentManager::fireEvent("PreProcessScripts", $scriptArray);
          
          $scripts = "";
          foreach($scriptArray as $s)
          {
               $scripts .= "  <script type='text/javascript' src='$s'></script>\n";
          }
          
          Cache::put("fakoli_scripts", $scripts);
          return $scripts;
     }
     
     static function loadScripts()
     {
          $scriptArray = array();
          
          $components = Query::create(Component, "WHERE enabled=1 ORDER BY priority")->execute();
          foreach($components as $component)
          {
               $manifest = $component->loadManifest();
               if (method_exists($manifest, getScripts))
               {
                    // Calculate union of scripts
                    $scriptArray = array_merge($scriptArray, array_diff($manifest->getScripts(), $scriptArray));
               }
          }
          
          return $scriptArray;
     }
     
     static function getStyles()
     {
          $styles = Cache::get("fakoli_styles");
          if ($styles) return $styles;
 
          $styleArray = Fakoli::loadStyles();          
          $styleArray = ComponentManager::fireEvent("PreProcessStyles", $styleArray);
          
          $styles = "";
          foreach($styleArray as $s)
          {
               $styles .= "  <link href='$s' rel='stylesheet' type='text/css' media='all'/>\n";
          }
          
          Cache::put("fakoli_styles", $styles);
          return $styles;          
     }
     
     static function loadStyles()
     {
          $styleArray = array();
          
          $components = Query::create(Component, "WHERE enabled=1 ORDER BY priority")->execute();
          foreach($components as $component)
          {
               $manifest = $component->loadManifest();
               if (method_exists($manifest, getStyles))
               {
                    // Calculate union of styles
                    $styleArray = array_merge($styleArray, array_diff($manifest->getStyles(), $styleArray));
               }
          }
          
          return $styleArray;
     }
     
     static function evaluateFile($filePath)
     {
          global $config;
          global $method;
          global $user;
          global $script;
          global $styles;
          global $breadcrumbs;
          global $dialogs;
          global $page;
          global $site;
          global $menu_identifier;
          global $identifier;
          global $section;
          
          ob_start();
               
          $codePath = explode(",", $filePath);
          if (count($codePath) == 2)
          {
               $name = $codePath[0];
               $php_code_file = $codePath[1];
               $components = Fakoli::getComponents();
               if (array_key_exists($name, $components))
               {
                    
                    $path = $components[$name]->component_path."/{$php_code_file}";
                    trace("Evaluating $path", 3);
                    include $path;
               }
               else
               {
                    throw new FakoliException("Unknown component");
               }
          }
          else
          {
               $matches = array();
               if (preg_match('/^\/components\/(.*?)\//', $filePath, $matches))
               {
                    $c = $matches[1];
                    $path = str_replace("/components/{$c}", "", $filePath);
                    $component = Fakoli::getComponent($c);
                    if ($component)
                    {
                         $path = $component->component_path . $path;
                         include $path;
                    }
               }
               else
               {
                    include $config['homedir']."/{$filePath}";
               }
          }
          $output = ob_get_contents();
          ob_end_clean();          
          
          return $output;
     }
     
     static function includeScript($src)
     {
          global $isResource;
          global $script;
          if (!array_key_exists($src, Fakoli::$includedScripts))
          {
               $script .= "<script type='text/javascript' src='$src'></script>\n";
               Fakoli::$includedScripts[$src] = true;
          }
     }
     
     static function includeStylesheet($src, $media="all")
     {
          global $styles;
          $styles .= "<link href='$src' rel='stylesheet' type='text/css' media='$media'/>\n";
     }
     
     static function compareByWeight($item1, $item2)
     {
          return $item1["weight"] - $item2["weight"];
     }
     
     static function getComponentClassRoot($name)
     {
          return str_replace(" ", "", prettify($name));
     }
     
     static function sendResource($uri, $component = "")
     {
          $resource = Fakoli::resolveResource($uri, $component);
          if (!$resource)
          {
               throw new FakoliException("Cannot find resource '$uri'");
          }
          
          Fakoli::sendFile($resource);
     }
     
     static function sendFile($resource)
     {
         $last_modified = filemtime($resource);
          
          $mimeType = DocumentHandler::getMIMEType($resource);
          
         if(array_key_exists("HTTP_IF_MODIFIED_SINCE",$_SERVER))
         {
          
             $if_modified_since=strtotime($_SERVER["HTTP_IF_MODIFIED_SINCE"]);
          //$if_modified_since=strtotime(preg_replace('/;.*$/','',$_SERVER["HTTP_IF_MODIFIED_SINCE"]));
             
             if($if_modified_since >= $last_modified)
             {
                 header("HTTP/1.0 304 Not Modified");
                 $noChange = true;
             }
         }
 
          header("Content-Type: $mimeType"); 
          header("Last-Modified: ".date('r', $last_modified));
          header("Cache-Control: max-age=300, must-revalidate");
          header("Pragma: private");
          header("Expires: " . date(DATE_RFC822,strtotime(" 2 day")));
          
          if (!$noChange)
          {
               if (Fakoli::detectXSendFileSupport())
               {
                    header("X-SendFile: $resource");
                    return;   
               }
               else
               {
                    $f = fopen($resource, "r");
          
                   $size = filesize($resource);
                    header("Content-Length: $size");
                              
                    fpassthru($f);
                    fclose($f);
               }
          }
          
          ComponentManager::fireEvent("RequestComplete");
     }
     
     static function detectXSendFileSupport()
     {
          if (function_exists("apache_get_modules"))
          {
               $support = in_array('mod_xsendfile', apache_get_modules());
          }
          
          return $support;
     }
     
     static function resolveResource($resource, $component = "")
     {
          global $config;
          
          if (strpos("../", $resource) !== FALSE)
          {
               throw new FakoliException("Attempt to resolve illegal resource path");
          }
          
          if (endsWith($resource, ".inc") || endsWith($resource, ".php"))
          {
               header("HTTP/1.0 403 Forbidden");
               throw new FakoliException("Access Forbidden");              
          }
          
          $resource = sanitizePath($resource);
          
          $dir = dirname($resource);
          
          // Exclude the following component sub-directories
          if ($dir == "datamodel" || $dir == "updates" || $dir == "admin") return null;
          
          $components = Fakoli::getComponents();
          
          if ($component)
          {
               if (!$components[$component])
               {
                    throw new FakoliException("Attempt to reference unknown or disabled component '$component'");
               }
               
               $c = $components[$component];
               
               $file = $c->component_path . DIRECTORY_SEPARATOR . $resource;
               
               return (file_exists($file)) ? $file : null;
          }
          
          $file = Cache::get("resource:$resource");
          if ($file) return $file;
          
          $path = $config['homedir'] . PATH_SEPARATOR . ini_get("include_path");
          if (isset($config["extra_includes"])) $path .= PATH_SEPARATOR . $config["extra_includes"];
          
          $roots = explode(PATH_SEPARATOR, $path);
               
          foreach($roots as $root)
          {
               $file = sanitizePath($root . DIRECTORY_SEPARATOR . $resource);
               if (file_exists($file))
               {
                    Cache::put("resource:$resource", $file);
                    return $file;
               }
               
               $file = sanitizePath($root . DIRECTORY_SEPARATOR . "cms" . DIRECTORY_SEPARATOR . $resource);
               if (file_exists($file))
               {
                    Cache::put("resource:$resource", $file);
                    return $file;
               }              
          }
 
          foreach($components as $name => $c)
          {
               $file = sanitizePath($c->component_path . DIRECTORY_SEPARATOR . $resource);
               if (file_exists($file))
               {                   
                    Cache::put("resource:$resource", $file);
                    return $file;
               }
          }
                    
          trace("Cannot resolve $file", 2);
          
          return null;
     }
     
     static function loadResource($resource, $component = "")
     {
          $path = Fakoli::resolveResource($resource, $component);
          if ($path) return file_get_contents($path);
          return null;
     }
     
     static function applyTemplate($target, $templateFile, $component = "")
     {
          $template = Fakoli::loadResource($templateFile, $component);
          return $target->format($template);
     }
     
     static function checkSSL()
     {
          $https = false;
          $https = $_SERVER['HTTPS'];
          if ($https == "off") $https = false;
          if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') 
          {
               $https = true;
          }
          
          return $https;
     }
     
     static function sendPage($sectionIdentifier, $identifier, $page_id = null)
     {
          trace("Send Page: '$sectionIdentifier', '$identifier', '$page_id'", 2);
          
          $site = Site::getSite();
          
          if (!$sectionIdentifier) $sectionIdentifier = "/";
          
          if ($sectionIdentifier == "/" && $identifier == "admin")
          {
               redirect("/admin/index");
          }
          
          if (!$identifier && $page_id)
          {
               throw new FakoliException("Page ID access has been deprecated.");
          }
          
          global $config;
          global $section;
          
          try
          {
               $section = Section::createFromIdentifier($sectionIdentifier);
 
               ComponentManager::fireEvent("OverrideResource", $identifier);
               
               if (!$section)
               {
                    throw new FakoliException("The section you were attempting to access could not be found.");
               }
               
               $contentManager = $section->getContentManager();
               
               if (!$identifier)
               {
                    $url = $section->getSectionURL();
                    redirect($url.$contentManager->getDefaultPage($section));
               }
               else
               {
                    $alias = ComponentManager::fireEvent("PreprocessURI", $identifier);
                    if ($alias) $identifier = $alias;
               }
               
               $content = $section->getContent($identifier);
               if (!$content)
               {
                    ComponentManager::fireEvent("ResourceNotFound", $identifier);
                         
                    throw new FakoliException("The page you were attempting to access could not be found.");
               }
               
               $permissions = $section->getPermissions($content);
               if ($permissions)
               {
                    trace("Checking Permissions: [{$permissions}]", 4);
                    if (!Settings::checkPermissions($permissions))
                    {
                         LoginManager::redirectToLogin();
                    }
               }
               else if (!checkRole($section->getRole($content)))
               {
                    LoginManager::redirectToLogin();
               }
               
               trace("\$_SERVER['HTTPS'] = {$_SERVER['HTTPS']}", 3);
               trace("\$_SERVER['REQUEST_URI'] = {$_SERVER['REQUEST_URI']}", 3);
               
               $https = Fakoli::checkSSL();
               
               $useSSL = $section->use_SSL || $content->use_SSL;
               
               if ($useSSL && !$https )
               {
                    redirect("https://".$config['http_host'].$_SERVER['REQUEST_URI']);
               }
               else if (!$useSSL && $https && $identifier != "login" && !isset($_REQUEST["login"]))
               {
                    redirect("http://".$config['http_host'].$_SERVER['REQUEST_URI']);
               }
               
               ComponentManager::fireEvent("StartPage");
               $contentManager->sendContent($section, $identifier);
               ComponentManager::fireEvent("RequestComplete");        
          }
          catch(FakoliEarlyExit $exit)
          {
               echo $exit->getMessage();
          }         
     }
     
     static function getAdminAccessRoles()
     {
          global $config;
          $adminAccess = $config["admin_access_roles"];
          if (!$adminAccess) $adminAccess = "admin";
          return $adminAccess;
     }
     
     static function countActiveSessions()
     {
          $sessions = scandir(ini_get("session.save_path"));
          trace("SESSIONS: ".print_r($session, true), 1);
          $number_of_users = count($sessions) - 2;
          return $number_of_users;
     }
     
     static function sendAdminPage($identifier)
     {
          $adminAccess = Fakoli::getAdminAccessRoles();
          
          $pageRole = Fakoli::getAdminPageRole($identifier);
          
          if ($identifier != "login" && $identifier != "password_help") 
          {
               Fakoli::assertRole($adminAccess, "/admin/login");
               Fakoli::assertRole($pageRole, "/admin/login");
          }
          
          $https = Fakoli::checkSSL();
          
          if ($config['admin_SSL'] && !$https )
          {
               redirect("https://".$config['http_host'].$_SERVER['REQUEST_URI']);
          }
          
          $view = new AdminPageView($identifier);
          $view->drawView();       
     }
     
     static function getComponentForClass($class)
     {
          $reflector = new ReflectionClass($class);
          $file = $reflector->getFileName();
          trace("File for $class: $file", 3);
          
          if ($file)
          {
               $file = str_replace(DIRECTORY_SEPARATOR, "/", $file);
               
               $matches = array();
               if (preg_match("/components\\/(.*?)\\//", $file, $matches))
               {
                    trace("Component for $class is {$matches[1]}", 3);                    
                    return $matches[1];
               }
          }
          
          throw new FakoliException("Failed to determine component for $class");
     }
     
     static function end($message = "")
     {
          throw new FakoliEarlyExit($message);
     }
     
     static function JSONreturn($object, $sendType = true, $wrap = true)
     {
          if ($sendType) header("Content-Type: application/json");
          if (method_exists($object, "toJSON"))
          {
               $out = ($wrap) ? '{"result": '.$object->toJSON().'}' : $object->toJSON();
          }
          else 
          {         
               $out = ($wrap) ? '{"result": '.json_encode($object).'}' : json_encode($object);
          }
          
          throw new FakoliEarlyExit($out);        
     }
     
     static function JSONerror($error, $sendType = true)
     {
          if ($sendType) header("Content-Type: application/json");
          
          $errorObject = (object)array('error' => $error);
          
          throw new FakoliEarlyExit(json_encode($errorObject));
     }
      
     static function notify($message, $blocking = false, $button = "OK", $onClick = "null")
     {
          $message = jsSafe($message);
          
          if ($blocking)
          {
               $options = ", {blocking: true, buttonText: '$button', onClick: $onClick}";
          }
          global $script;
          $script .= 
<<<ENDSCRIPT
          <script type='text/javascript'>
          window.addEvent('load', function()
          {
               notification("$message"$options);
          });
          </script>
ENDSCRIPT;
     }
     
     static function notifyOnNextPage($message, $blocking = false, $button = "OK", $onClick = "null")
     {
          $_SESSION["notification_pending"] = $message;
          $_SESSION["notification_pending_blocking"] = $blocking;
          $_SESSION["notification_pending_button"] = $button;
          $_SESSION["notification_pending_onclick"] = $onClick;
     }
     
     static function showPendingNotification()
     {
          global $isAction;
          global $isResource;
          
          if (!$isAction &&  !$isResource && isset($_SESSION["notification_pending"]))
          {
               Fakoli::notify($_SESSION["notification_pending"], 
                                 $_SESSION["notification_pending_blocking"], 
                                 $_SESSION["notification_pending_button"],
                                 $_SESSION["notification_pending_onclick"]);
               unset($_SESSION["notification_pending"]);
               unset($_SESSION["notification_pending_blocking"]);
               unset($_SESSION["notification_pending_button"]);
               unset($_SESSION["notification_pending_onclick"]);
          }
     }
     
     function scrollTo($element, $offset = 0)
     {
          global $script;
          $script .=
<<<ENDSCRIPT
     <script type='text/javascript'>
     window.addEvent('domready', function()
     {
          window.scrollToElement('{$element}', $offset);
     });
     </script>
ENDSCRIPT;
     }
     
     function scrollToOnNextPage($element, $offset = 0)
     {
          $_SESSION["scrollto_pending"] = $element;
          $_SESSION["scrollto_offset"] = $offset;
     }
     
     static function showPendingScrollTo()
     {
          global $isAction;
          global $isResource;
          
          if (!$isAction &&  !$isResource && isset($_SESSION["scrollto_pending"]))
          {
               Fakoli::scrollTo($_SESSION["scrollto_pending"], $_SESSION["scrollto_offset"]);
               unset($_SESSION["scrollto_pending"]);
               unset($_SESSION["scrollto_offset"]);
          }
     }
     
     function scriptOnNextPage($s)
     {
          $_SESSION["script_pending"] .= $s;
     }
     
     static function writePendingScripts()
     {
          global $isAction;
          global $isResource;
          global $script;
          
          if (!$isAction && !$isResource && isset($_SESSION["script_pending"]))
          {
               $script .= $_SESSION["script_pending"];
               unset($_SESSION["script_pending"]);
          }
     }
     
     static function setTraceLevel($level)
     {
          global $config;
          $config["trace_level"] = $level;        
     }
     
     static function applicationTraceLevel()
     {
          Fakoli::setTraceLevel(Settings::getValue("debug", "application_trace_level"));
     }
     
     static function coreTraceLevel()
     {
          Fakoli::setTraceLevel(Settings::getValue("debug", "trace_level"));
     }
     
     static function scheduledTaskTraceLevel()
     {
          Fakoli::setTraceLevel(Settings::getValue("debug", "scheduled_task_trace_level"));
     }
     
     static function errorHandler($errLevel, $errMsg, $errFile, $errLine)
     {
          // Transform XML DOM warning messages into exceptions for easier handling
         if ($errLevel==E_WARNING && (substr_count($errMsg,"DOMDocument::loadXML()")>0))
         {
             throw new DOMException($errMsg);
         }
         
          if ($errLevel & (E_NOTICE | E_WARNING | E_USER_WARNING | E_STRICT | E_DEPRECATED)) return;
          
          throw new ErrorException($errMsg, $errLevel, $errLevel, $errFile, $errLine);
     }
 
     static function exceptionHandler($exception)
     {
          global $isAction;
          global $config;
          
          try 
          {
          //Getting exception information
               $errMsg = $exception->getMessage();
               $errLevel = $exception->getCode();
               $errFile = $exception->getFile();
               $errLine = $exception->getLine();
             
               if ($errLevel & (E_NOTICE | E_WARNING | E_USER_WARNING | E_STRICT | E_DEPRECATED)) return;
          
               trace("ZIP: Winding back output buffers from ".ob_get_level(), 3);
               
               if (Fakoli::$rollbackBuffers)
               {
                    while(ob_get_level() > Fakoli::$outputBufferLevel) // Clear all output buffers.
                    {
                         ob_end_clean();
                    }
               }
                         
               $msg = $exception->getMessage();
               if ($config["bootstrap_error_stack_trace"])
               {
                    $msg .= "<br/><b>Stack trace:</b><br/>".$exception->getTraceAsString();
               }
               
               if ($isAction)
               {
                    echo $msg;
               }
               else
               {
                    $err = Fakoli::resolveResource("/fakoli/error.tpl");
                    $template = file_get_contents($err);
                    $out = str_replace("{message}", $msg, $template);
                    echo $out;
               }
                    
               ComponentManager::fireEvent("RequestComplete");
          }
          catch (Exception $ex)
          {
               echo $ex->getMessage();
               //Do nothing. 
               //Avoiding error from error handling...
          }
         
          /* Don't execute PHP internal error handler */
         return true;
     }
     
     static function scriptName()
     {
          list ($s, $qs) = explode("?", $_SERVER['REQUEST_URI']);
          return $s;          
     }
    
    static function detectWindowsOS()
    {
          return (strtolower(substr(PHP_OS, 0, 3)) == "win");
    }
    
     static function getServerLoad()
     {
          $out = "";
          
          if (Fakoli::detectWindowsOS()) 
          {              
               if (class_exists("COM"))
               {
                 $wmi = new COM("Winmgmts:{impersonationlevel=impersonate}!\\Root\\Cimv2");
                    $cpus = $wmi->InstancesOf("Win32_Processor");
       
                    foreach ($cpus as $cpu) 
                    {
                         $out .=  $cpu->LoadPercentage."% ";
                    }
               }
               else
               {
                    $out .= "Not Available";
               }              
        } 
        else 
        {       
            $sys_load = sys_getloadavg();
            $load0 = number_format($sys_load[0], 2);
            $load1 = number_format($sys_load[1], 2);
            $load2 = number_format($sys_load[2], 2);
            $out = "$load0&nbsp;&nbsp;&nbsp;$load1&nbsp;&nbsp;&nbsp;$load2";       
        }
       
        return $out;  
    }
    
    static function getFileSystemInfo()
    {
     global $config;
     
     if (isset($config['filesystems']))
     {
          $fs = explode(",", $config['filesystems']);
     }
     else if (Fakoli::detectWindowsOS())
     {
          $fs = array("C:");
     }
     else
     {
          $fs = array("/");
     }
     
     $out = "<table class='list'><thead><tr><th>File System</th><th>Size</th><th>Available</th><th>% Free</th></tr></thead><tbody>";
     foreach($fs as $f)
     {
          $free = disk_free_space($f);
          $total = disk_total_space($f);
          $percent = number_format($free * 100 / $total, 1);
          $style = ($percent < 10) ? " style='background-color: #f00;color: #fff'" : (($percent < 25) ? " style='background-color: #ff0'" : "");
          $out .= "<tr$style><td>$f</td><td style='text-align: right'>" . getScaledSize($total) . 
                    "</td><td style='text-align: right'>" . getScaledSize($free) . 
                    "</td><td style='text-align: right'>" . $percent . "%</td></tr>";
     }
     
     $out .= "</tbody></table>";
     return $out;
    }
    
    static function shutdownHandler()
    {
     global $config;
     $error = error_get_last();
     
     trace("## Shutdown", 4);
     
         if ($error)
         {
          switch($error['type'])
          {
             case E_ERROR:
             case E_CORE_ERROR:
             case E_COMPILE_ERROR:
             case E_USER_ERROR:
               
               trace($error['message']." at ".$error['file'].":".$error['line'], 1);
 
               if ($config["dump_includes"]) 
                 {
                    printIncludes();
                 }
                 break;
             }
         }   
    }
}
 
$method = $_SERVER["REQUEST_METHOD"];
 
Fakoli::$timestamp = microtime(true);
Fakoli::$requestStartTime = now();
Fakoli::$requestURI = $_SERVER["REQUEST_URI"];
 
if ($config["default_content_type"])
{
     header("Content-Type: {$config['default_content_type']}");
}
 
$isAction = (basename($_SERVER["SCRIPT_FILENAME"]) == "action.php" || php_sapi_name() == "cli");
$isResource = basename($_SERVER["SCRIPT_FILENAME"]) == "resource.php";
 
if ($isAction)
{
     registerURLRewriteParameters("component", "identifier");
}
else if ($isResource)
{
     registerURLRewriteParameters("component", "path");
}
else if ($isAdmin)
{
     registerURLRewriteParameters("identifier");
}
else
{
     registerURLRewriteParameters("section", "identifier");
}
 
Fakoli::$outputBufferLevel = ob_get_level(); // Initial level of output buffer nesting
 
set_error_handler(array("Fakoli", "errorHandler"));
set_exception_handler(array("Fakoli", "exceptionHandler"));
 
Fakoli::using("component", "user", "login");
 
ComponentManager::fireEvent("ConfigurationBootstrap");
 
 
// Automatically import commonly used features
Fakoli::usingFeature("auto_form", "auto_form_layout", "data_view", "grouped_data_view", "join", "search_form", "tab_bar", "paged_list", "expanding_list", "date_utils");
 
$user = null;
 
// Import Standard Features
Fakoli::usingFeature("data_item", "auto_form", "field_renderers", "cache", "data_view", "grouped_data_view", "filter_form", "search_form", 
                          "paged_list", "grouped_list", "facet_manager", "join", "tab_bar", "tree");
 
$config["trace_level"] = Settings::getValue("debug", "trace_level");
                         
ComponentManager::fireEvent("RegisterErrorHandler");
ComponentManager::fireEvent("RegisterActivityTracker");
ComponentManager::fireEvent("RegisterSessionPersistance");
ComponentManager::fireEvent("RegisterLoginExtension");
 
session_start();
 
if (isset($_SESSION["user"]))
{
     if ($_POST["Logout"])
     {
          session_destroy();
          unset($user);
     }
     else
     {
          $user = $_SESSION["user"];
     }
}
else
{
 
     if ($method == "POST" && $_POST["Login"])
     {    
          $mgr = new LoginManager();
          $mgr->validateLogin();
          
     }
}
 
Fakoli::showPendingScrollTo();
Fakoli::showPendingNotification();
Fakoli::writePendingScripts();
ComponentManager::fireEvent("Initialize");
 
?>