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   1  <?php
   2  /* 

   3   * phpMyVisites : website statistics and audience measurements

   4   * Copyright (C) 2002 - 2006

   5   * http://www.phpmyvisites.net/ 

   6   * phpMyVisites is free software (license GNU/GPL)

   7   * Authors : phpMyVisites team

   8  */
   9  
  10  // $Id: ApplicationController.php 232 2007-07-06 09:31:19Z matthieu_ $

  11  
  12  require_once  INCLUDE_PATH . '/core/include/Request.class.php';
  13  require_once  INCLUDE_PATH . '/core/include/Module.class.php';
  14  require_once  INCLUDE_PATH . '/core/include/Lang.class.php';
  15  require_once  INCLUDE_PATH . '/config.inc.php';
  16  require_once  INCLUDE_PATH . '/core/include/User.class.php';
  17  
  18  class ApplicationController
  19  {
  20      
  21      var $module;
  22      
  23      var $defaultModuleName = 'index';
  24      
  25      var $request;
  26      
  27      var $lang;
  28      
  29      
  30      /**

  31       * Constructeur

  32       */
  33      function ApplicationController(){}
  34      
  35      
  36      /**

  37       * Singleton

  38       */
  39      function &getInstance()
  40      {
  41          static $instance;
  42          
  43          if (!isset($instance)){
  44              $c = __CLASS__;
  45              $instance = new $c;
  46          }
  47          return $instance;
  48      }
  49      
  50      /**

  51       * Point d'entr�e de l'application

  52       *

  53       */
  54      function init()
  55      {
  56                  
  57          $c =& PmvConfig::getInstance();
  58          $Lang =& Lang::getInstance();
  59          
  60          // id used for caching

  61          define('SMARTY_CACHE_ID', md5(
  62                      @$_SERVER['SERVER_NAME']. // if server changes, must regenerate cache
  63                      
  64                      $_SERVER['PHP_SELF'].
  65                      
  66                      serialize($_GET). // one cache per distinct URL 
  67                      
  68                      serialize($_POST). // idem for POST
  69                      
  70                      // one cache per user

  71                      (isset($_COOKIE[COOKIE_NAME_SESSION]) 
  72                          ? serialize($_COOKIE[COOKIE_NAME_SESSION])
  73                          : '' ). 
  74                      
  75                      // file name of the language file

  76                      $Lang->getFileName() . 
  77                          
  78                      // one cache per day

  79                      date("Y-m-d"). 
  80                      
  81                      TIME_BEFORE_NEW_DAY_ARCHIVE. 
  82                      PHPMV_VERSION.
  83                      INTERNAL_STATS
  84                  )
  85              );
  86  
  87          setIncludePath();
  88          
  89          $db =& Db::getInstance();
  90  
  91          if(defined( 'DB_HOST' ))
  92          {
  93              $db->connect();
  94          }
  95          
  96          // try to set memory limit to MEMORY_LIMIT 

  97          setMemoryLimit();
  98          
  99          $controller =& ApplicationController::getInstance();
 100          
 101          $controller->loadLang();
 102          
 103          $controller->parseRequest();
 104  
 105          $controller->loadModule();
 106          
 107          $controller->executeAction();
 108      }
 109       
 110      /**

 111       * Analyse et definit la requete utilisateur

 112       *

 113       */
 114      function parseRequest()
 115      {
 116           $this->request  =& Request::getInstance();
 117          if (!is_a( $this->request , 'Request'))
 118              trigger_error('Unable to parse current request... error', E_USER_ERROR);
 119  
 120      }
 121      
 122      /**

 123       * retourne la request 

 124       *

 125       */
 126      function &getRequest()
 127      {
 128          return $this->request;
 129      }
 130      
 131      
 132      function loadLang()
 133      {
 134          $this->lang =& Lang::getInstance();
 135      }
 136      
 137      function &getLang()
 138      {
 139          return $this->lang;
 140      }
 141      
 142      /**

 143       * Charge le module demand�

 144       *

 145       */
 146      function loadModule()
 147      {
 148          $moduleName = $this->request->getModuleName();
 149          $db =& Db::getInstance();
 150          
 151          if(ereg('admin', $moduleName) )
 152          {
 153              $this->lang->reloadLangFile();
 154          }
 155          if (!$moduleName)
 156          {
 157              $moduleName = $this->defaultModuleName;
 158          }
 159          
 160          
 161          if($moduleName == 'list_logos')
 162          {
 163              $authorized = true;
 164          }
 165          else
 166          {
 167              $b_writeDir = checkDirWritable( );
 168              
 169              /**

 170               * very first : logo selection is allowed

 171               */
 172              /**

 173               * first look if installation is needed 

 174               */
 175              if(!is_file( INCLUDE_PATH . "/config/config.php")
 176                  || !defined('DB_HOST')
 177                  || !defined('SU_LOGIN')
 178                  || !defined('INSTALL_OK'))
 179              {
 180                  if( !Request::isCurrentModuleAnInstallModule() )
 181                  {
 182                      Request::redirectToModule('install_welcome');
 183                  }
 184                  $authorized = true;
 185              }
 186              
 187              /**

 188               * second, look if database configuration only is needed

 189               */
 190              else if(!$db->isReady() 
 191                      && substr_count( Request::getCurrentCompleteUrl(), 'mod=login' ) === 0
 192                      && substr_count( Request::getCurrentCompleteUrl(), 'mod=logout' ) === 0
 193                      )
 194              {
 195                  Request::redirectToModule('admin_db_config');            
 196              }
 197              
 198              /**

 199               * third, look if there is a problem relative to writable directories

 200               */
 201              else if( $b_writeDir === false)
 202              {    
 203                  // case there is a write problem, we load server_info page to indicate the user the problem

 204                  $moduleName = 'admin_server_info';
 205                  $authorized = true;
 206              }
 207              else if($db->isReady())
 208              {
 209                  if( version_compare($db->getVersion(), PHPMV_VERSION) == -1)
 210                  {
 211                      $moduleName = 'admin_update';
 212                      $authorized = true;
 213                  }
 214                  else if( version_compare($db->getVersion(), PHPMV_VERSION) == 1)
 215                  {
 216                      trigger_error("There is a problem : your database is more recent than your phpMyVisites files! Try to upload the last release of phpMyVisites on your server.", E_USER_ERROR);
 217                  }
 218              }
 219          }
 220          /**

 221           * else it's ok! Load module

 222           */
 223          
 224          // update module in the object request, used for hidden field in the login form

 225          $this->request->setModuleName($moduleName);
 226          
 227          // manage the user, is he authorized to see this module ?

 228          $me =& User::getInstance();
 229          
 230          
 231          if( isset($authorized)
 232              || $me->isAuthorized( $moduleName )  
 233              || $this->request->isCrontabAllowed()
 234              )
 235          {
 236              $module = Module::factory($moduleName);
 237          }
 238          else
 239          {
 240              $module = Module::factory('login');
 241          }
 242          
 243            if (!is_subclass_of($module, 'Module'))
 244              trigger_error('Unable to load: ' . $moduleName . ' module', E_USER_ERROR);
 245          
 246           $module->init($this->request, null);
 247          
 248           $this->module =& $module;
 249      }
 250      
 251      
 252      function executeAction()
 253      {
 254          
 255          $this->module->doAction();
 256      }
 257  }
 258  ?>