classes/platal.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2006 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21
  22 define('PL_FORBIDDEN', 403);
  23 define('PL_NOT_FOUND', 404);
  24
  25 class Platal
  26 {
  27     var $__mods;
  28     var $__hooks;
  29
  30     var $ns;
  31     var $path;
  32     var $argv;
  33
  34     function Platal()
  35     {
  36         $modules    = func_get_args();
  37         $this->path = trim(Get::_get('n', null), '/');
  38
  39         $this->__mods  = array();
  40         $this->__hooks = array();
  41
  42         array_unshift($modules, 'core');
  43         foreach ($modules as $module) {
  44             $this->__mods[$module] = $m = PLModule::factory($module);
  45             $this->__hooks += $m->handlers();
  46         }
  47     }
  48
  49     function pl_self($n = null)
  50     {
  51         if (is_null($n))
  52             return $this->path;
  53
  54         if ($n >= 0)
  55             return join('/', array_slice($this->argv, 0, $n + 1));
  56
  57         if ($n <= -count($this->argv))
  58             return $this->argv[0];
  59
  60         return join('/', array_slice($this->argv, 0, $n));
  61     }
  62
  63     function find_hook()
  64     {
  65         $p = $this->path;
  66
  67         while ($p) {
  68             if (array_key_exists($p, $this->__hooks))
  69                 break;
  70
  71             $p = substr($p, 0, strrpos($p, '/'));
  72         }
  73
  74         if (empty($this->__hooks[$p])) {
  75             return null;
  76         }
  77
  78         $hook = $this->__hooks[$p];
  79
  80         if (!is_callable($hook['hook'])) {
  81             return null;
  82         }
  83
  84         $this->argv    = explode('/', substr($this->path, strlen($p)));
  85         $this->argv[0] = $p;
  86
  87         return $hook;
  88     }
  89
  90     function call_hook(&$page)
  91     {
  92         $hook = $this->find_hook();
  93
  94         if (is_null($hook)) {
  95             return PL_NOT_FOUND;
  96         }
  97
  98         $args    = $this->argv;
  99         $args[0] = &$page;
 100
 101         if (strlen($hook['perms']) && $hook['perms'] != Session::v('perms')) {
 102             return PL_FORBIDDEN;
 103         }
 104
 105         if ($hook['auth'] > S::v('auth', AUTH_PUBLIC)) {
 106             if ($hook['type'] == DO_AUTH) {
 107                 global $globals;
 108
 109                 if (!call_user_func(array($globals->session, 'doAuth'))) {
 110                     $this->force_login($page);
 111                 }
 112             } else {
 113                 return PL_FORBIDDEN;
 114             }
 115         }
 116
 117         return call_user_func_array($hook['hook'], $args);
 118     }
 119
 120     function force_login(&$page)
 121     {
 122         if (S::logged()) {
 123             $page->changeTpl('password_prompt_logged.tpl');
 124             $page->addJsLink('do_challenge_response_logged.js');
 125         } else {
 126             $page->changeTpl('password_prompt.tpl');
 127             $page->addJsLink('do_challenge_response.js');
 128         }
 129         $page->run();
 130     }
 131
 132     function run()
 133     {
 134         global $page;
 135
 136         new_skinned_page('index.tpl');
 137
 138         if (empty($this->path)) {
 139             $this->path = 'index';
 140         }
 141
 142         $page->assign('platal', $this);
 143         switch ($this->call_hook($page)) {
 144           case PL_FORBIDDEN:
 145             $this->__mods['core']->handler_403($page);
 146             break;
 147
 148           case PL_NOT_FOUND:
 149             $this->__mods['core']->handler_404($page);
 150             break;
 151         }
 152
 153         $page->assign('platal', $this);
 154         $page->run();
 155     }
 156
 157     function on_subscribe($forlife, $uid, $promo, $pass)
 158     {
 159         $args = func_get_args();
 160         foreach ($this->__mods as $mod) {
 161             if (!is_callable($mod, 'on_subscribe'))
 162                 continue;
 163             call_user_func_array(array($mod, 'on_subscribe'), $args);
 164         }
 165     }
 166 }
 167
 168 ?>