include/validations/photos.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2007 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 // {{{ class PhotoReq
  23
  24 class PhotoReq extends Validate
  25 {
  26     // {{{ properties
  27
  28     var $mimetype;
  29     var $data;
  30     var $x;
  31     var $y;
  32
  33     var $unique = true;
  34     var $valid  = false;
  35
  36     var $rules = "Refuser les photos copyrightées, de mineurs, ou ayant
  37     un caractère pornographique, violent, etc... Si une photo est mal
  38     cadrée (20% de photo et 80% de blanc par exemple), si c'est un
  39     camarade antique, on lui arrange sinon on lui
  40     refuse en lui expliquant gentiment le problème. Idem si les dimensions de
  41     la photo sont archi trop grandes ou archi trop petites.";
  42
  43     // }}}
  44     // {{{ constructor
  45
  46     function PhotoReq($_uid, $_data, $_stamp=0)
  47     {
  48         $this->Validate($_uid, true, 'photo', $_stamp);
  49         $this->valid = $this->_get_image($_data);
  50     }
  51
  52     // }}}
  53     // {{{ function _get_image()
  54
  55     function _get_image($_data)
  56     {
  57         global $page;
  58
  59         VarStream::init();
  60
  61         // calcul de la taille de l'image
  62         $GLOBALS['photoreq'] = $_data;
  63         $image_infos = getimagesize('var://photoreq');
  64         unset ($GLOBALS['photoreq']);
  65
  66         if (empty($image_infos)) {
  67             $page->trig("Image invalide");
  68             return false;
  69         }
  70         list($this->x, $this->y, $this->mimetype) = $image_infos;
  71
  72         switch ($this->mimetype) {
  73             case 1: $this->mimetype = "gif";    break;
  74             case 2: $this->mimetype = "jpeg";   break;
  75             case 3: $this->mimetype = "png";    break;
  76             default:
  77                 $page->trig("Type d'image invalide");
  78                 return false;
  79         }
  80
  81         if (strlen($_data) > SIZE_MAX)  {
  82             $img = imagecreatefromstring($_data);
  83             if (!$img) {
  84                 $page->trig("image trop grande et impossible à retailler automatiquement");
  85                 return false;
  86             }
  87
  88             $nx = $x = imagesx($img);
  89             $ny = $y = imagesy($img);
  90
  91             if ($nx > 240) { $ny = intval($ny*240/$nx); $nx = 240; }
  92             if ($ny > 300) { $ny = intval($nx*300/$nx); $ny = 300; }
  93             if ($nx < 160) { $ny = intval($ny*160/$nx); $nx = 160; }
  94
  95             $comp = '90';
  96             $file = tempnam('/tmp', 'photo');
  97
  98             while (strlen($_data) > SIZE_MAX) {
  99                 $img2  = imagecreatetruecolor($nx, $ny);
 100                 imagecopyresampled($img2, $img, 0, 0, 0, 0, $nx, $ny, $x, $y);
 101                 imagejpeg($img2, $file, $comp);
 102                 $_data = file_get_contents($file);
 103                 $this->mimetype = 'jpeg';
 104
 105                 $comp --;
 106             }
 107
 108             unlink($file);
 109         }
 110         $this->data = $_data;
 111         return true;
 112     }
 113
 114     // }}}
 115     // {{{ function isValid()
 116
 117     function isValid()
 118     {
 119         return $this->valid;
 120     }
 121
 122     // }}}
 123     // {{{ function get_request()
 124
 125     function get_request($uid)
 126     {
 127         return parent::get_typed_request($uid,'photo');
 128     }
 129
 130     // }}}
 131     // {{{ function formu()
 132
 133     function formu()
 134     { return 'include/form.valid.photos.tpl'; }
 135
 136     // }}}
 137     // {{{ function editor()
 138
 139     function editor()
 140     {
 141         return 'include/form.valid.edit-photo.tpl';
 142     }
 143
 144     // }}}
 145     // {{{ function handle_editor()
 146
 147     function handle_editor()
 148     {
 149         if (isset($_FILES['userfile']['tmp_name'])) {
 150             $file = $_FILES['userfile']['tmp_name'];
 151             if ($data = file_get_contents($file)) {
 152                 if ($this->valid = $this->_get_image($data)) {
 153                     return true;
 154                 }
 155             } else {
 156                 $page->trig('Fichier inexistant ou vide');
 157             }
 158         }
 159         return false;
 160     }
 161
 162     // }}}
 163     // {{{ function _mail_subj
 164
 165     function _mail_subj()
 166     {
 167         return "[Polytechnique.org/PHOTO] Changement de photo";
 168     }
 169
 170     // }}}
 171     // {{{ function _mail_body
 172
 173     function _mail_body($isok)
 174     {
 175         if ($isok) {
 176             return "Le changement de photo que tu as demandé vient d'être effectué.";
 177         } else {
 178             return "La demande de changement de photo que tu avais faite a été refusée.";
 179         }
 180     }
 181
 182     // }}}
 183     // {{{ function commit()
 184
 185     function commit()
 186     {
 187         XDB::execute('REPLACE INTO  photo (uid, attachmime, attach, x, y)
 188                                       VALUES  ({?},{?},{?},{?},{?})',
 189                                       $this->uid, $this->mimetype, $this->data, $this->x, $this->y);
 190         require_once('notifs.inc.php');
 191         register_watch_op($this->uid,WATCH_FICHE);
 192         return true;
 193     }
 194
 195     // }}}
 196 }
 197
 198 // }}}
 199
 200 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
 201 ?>