source: trunk/upload.php @ 1004

Last change on this file since 1004 was 1004, checked in by nikrou, 18 years ago

Improve security of sessions:

  • use only cookies to store session id on client side
  • use default php session system with database handler to store sessions on server side
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 13.1 KB
Line 
1<?php
2// +-----------------------------------------------------------------------+
3// | PhpWebGallery - a PHP based picture gallery                           |
4// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
5// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
6// +-----------------------------------------------------------------------+
7// | branch        : BSF (Best So Far)
8// | file          : $RCSfile$
9// | last update   : $Date: 2006-01-15 13:45:42 +0000 (Sun, 15 Jan 2006) $
10// | last modifier : $Author: nikrou $
11// | revision      : $Revision: 1004 $
12// +-----------------------------------------------------------------------+
13// | This program is free software; you can redistribute it and/or modify  |
14// | it under the terms of the GNU General Public License as published by  |
15// | the Free Software Foundation                                          |
16// |                                                                       |
17// | This program is distributed in the hope that it will be useful, but   |
18// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
19// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
20// | General Public License for more details.                              |
21// |                                                                       |
22// | You should have received a copy of the GNU General Public License     |
23// | along with this program; if not, write to the Free Software           |
24// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
25// | USA.                                                                  |
26// +-----------------------------------------------------------------------+
27define('PHPWG_ROOT_PATH','./');
28include_once( PHPWG_ROOT_PATH.'include/common.inc.php' );
29
30//------------------------------------------------------------------- functions
31// The validate_upload function checks if the image of the given path is valid.
32// A picture is valid when :
33//     - width, height and filesize are not higher than the maximum
34//       filesize authorized by the administrator
35//     - the type of the picture is among jpg, gif and png
36// The function returns an array containing :
37//     - $result['type'] contains the type of the image ('jpg', 'gif' or 'png')
38//     - $result['error'] contains an array with the different errors
39//       found with the picture
40function validate_upload( $temp_name, $my_max_file_size,
41                          $image_max_width, $image_max_height )
42{
43  global $conf, $lang;
44               
45  $result = array();
46  $result['error'] = array();
47  //echo $_FILES['picture']['name']."<br />".$temp_name;
48  $extension = get_extension( $_FILES['picture']['name'] );
49  if (!in_array($extension, $conf['picture_ext']))
50  {
51    array_push( $result['error'], $lang['upload_advise_filetype'] );
52    return $result;
53  }
54  if ( !isset( $_FILES['picture'] ) )
55  {
56    // do we even have a file?
57    array_push( $result['error'], "You did not upload anything!" );
58  }
59  else if ( $_FILES['picture']['size'] > $my_max_file_size * 1024 )
60  {
61    array_push( $result['error'],
62                $lang['upload_advise_filesize'].$my_max_file_size.' KB' );
63  }
64  else
65  {
66    // check if we are allowed to upload this file_type
67    // upload de la photo sous un nom temporaire
68    if ( !move_uploaded_file( $_FILES['picture']['tmp_name'], $temp_name ) )
69    {
70      array_push( $result['error'], $lang['upload_cannot_upload'] );
71    }
72    else
73    {
74      $size = getimagesize( $temp_name );
75      if ( isset( $image_max_width )
76           and $image_max_width != ""
77           and $size[0] > $image_max_width )
78      {
79        array_push( $result['error'],
80                    $lang['upload_advise_width'].$image_max_width.' px' );
81      }
82      if ( isset( $image_max_height )
83           and $image_max_height != ""
84           and $size[1] > $image_max_height )
85      {
86        array_push( $result['error'],
87                    $lang['upload_advise_height'].$image_max_height.' px' );
88      }
89      // $size[2] == 1 means GIF
90      // $size[2] == 2 means JPG
91      // $size[2] == 3 means PNG
92      switch ( $size[2] )
93      {
94      case 1 : $result['type'] = 'gif'; break;
95      case 2 : $result['type'] = 'jpg'; break;
96      case 3 : $result['type'] = 'png'; break;
97      default :
98        array_push( $result['error'], $lang['upload_advise_filetype'] ); 
99      }
100    }
101  }
102  if ( sizeof( $result['error'] ) > 0 )
103  {
104    // destruction de l'image avec le nom temporaire
105    @unlink( $temp_name );
106  }
107  else
108  {
109    @chmod( $temp_name, 0644);
110  }
111  return $result;
112}       
113
114//-------------------------------------------------- access authorization check
115check_login_authorization();
116check_cat_id( $_GET['cat'] );
117if ( isset( $page['cat'] ) and is_numeric( $page['cat'] ) )
118{
119  check_restrictions( $page['cat'] );
120  $result = get_cat_info( $page['cat'] );
121  $page['cat_dir']        = get_complete_dir( $page['cat'] );
122  $page['cat_site_id']    = $result['site_id'];
123  $page['cat_name']       = $result['name'];
124  $page['cat_uploadable'] = $result['uploadable'];
125  if ($page['cat_site_id'] != 1 or !$page['cat_uploadable'])
126  {
127    echo '<div style="text-align:center;">'.$lang['upload_forbidden'].'<br />';
128    echo '<a href="./category.php">';
129    echo $lang['thumbnails'].'</a></div>';
130    exit();
131  }
132}
133
134$error = array();
135$page['upload_successful'] = false;
136if ( isset( $_GET['waiting_id'] ) )
137{
138  $page['waiting_id'] = $_GET['waiting_id'];
139}
140//-------------------------------------------------------------- picture upload
141// verfying fields
142if ( isset( $_POST['submit'] ) and !isset( $_GET['waiting_id'] ) )
143{
144  $path = $page['cat_dir'].$_FILES['picture']['name'];
145  if ( @is_file( $path ) )
146  {
147    array_push( $error, $lang['upload_file_exists'] );
148  }
149  // test de la présence des champs obligatoires
150  if ( empty($_FILES['picture']['name']))
151  {
152    array_push( $error, $lang['upload_filenotfound'] );
153  }
154  if ( !ereg( "([_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)+)",
155             $_POST['mail_address'] ) )
156  {
157    array_push( $error, $lang['reg_err_mail_address'] );
158  }
159  if ( empty($_POST['username']) )
160  {
161    array_push( $error, $lang['upload_err_username'] );
162  }
163 
164  $date_creation = '';
165  if ( !empty($_POST['date_creation']) )
166  {
167    list( $day,$month,$year ) = explode( '/', $_POST['date_creation'] );
168    // int checkdate ( int month, int day, int year)
169    if (checkdate($month, $day, $year))
170    {
171      $date_creation = $year.'-'.$month.'-'.$day;
172    }
173    else
174    {
175      array_push( $error, $lang['err_date'] );
176    }
177  }
178  // creation of the "infos" field :
179  // <infos author="Pierrick LE GALL" comment="my comment"
180  //        date_creation="2004-08-14" name="" />
181  $xml_infos = '<infos';
182  $xml_infos.= ' author="'.htmlspecialchars($_POST['author'],ENT_QUOTES).'"';
183  $xml_infos.= ' comment="'.htmlspecialchars($_POST['comment'],ENT_QUOTES).'"';
184  $xml_infos.= ' date_creation="'.$date_creation.'"';
185  $xml_infos.= ' name="'.htmlspecialchars( $_POST['name'], ENT_QUOTES).'"';
186  $xml_infos.= ' />';
187
188  if ( !preg_match( '/^[a-zA-Z0-9-_.]+$/', $_FILES['picture']['name'] ) )
189  {
190    array_push( $error, $lang['update_wrong_dirname'] );
191  }
192 
193  if ( sizeof( $error ) == 0 )
194  {
195    $result = validate_upload( $path, $conf['upload_maxfilesize'],
196                               $conf['upload_maxwidth'],
197                               $conf['upload_maxheight']  );
198    for ( $j = 0; $j < sizeof( $result['error'] ); $j++ )
199    {
200      array_push( $error, $result['error'][$j] );
201    }
202  }
203
204  if ( sizeof( $error ) == 0 )
205  {
206    $query = 'insert into '.WAITING_TABLE;
207    $query.= ' (storage_category_id,file,username,mail_address,date,infos)';
208    $query.= ' values ';
209    $query.= '('.$page['cat'].",'".$_FILES['picture']['name']."'";
210    $query.= ",'".htmlspecialchars( $_POST['username'], ENT_QUOTES)."'";
211    $query.= ",'".$_POST['mail_address']."',".time().",'".$xml_infos."')";
212    $query.= ';';
213    pwg_query( $query );
214    $page['waiting_id'] = mysql_insert_id();
215  }
216}
217
218//------------------------------------------------------------ thumbnail upload
219if ( isset( $_POST['submit'] ) and isset( $_GET['waiting_id'] ) )
220{
221  // upload of the thumbnail
222  $query = 'select file';
223  $query.= ' from '.WAITING_TABLE;
224  $query.= ' where id = '.$_GET['waiting_id'];
225  $query.= ';';
226  $result= pwg_query( $query );
227  $row = mysql_fetch_array( $result );
228  $file = substr ( $row['file'], 0, strrpos ( $row['file'], ".") );
229  $extension = get_extension( $_FILES['picture']['name'] );
230  $path = $page['cat_dir'].'thumbnail/';
231  $path.= $conf['prefix_thumbnail'].$file.'.'.$extension;
232  $result = validate_upload( $path, $conf['upload_maxfilesize'],
233                             $conf['upload_maxwidth_thumbnail'],
234                             $conf['upload_maxheight_thumbnail']  );
235  for ( $j = 0; $j < sizeof( $result['error'] ); $j++ )
236  {
237    array_push( $error, $result['error'][$j] );
238  }
239  if ( sizeof( $error ) == 0 )
240  {
241    $query = 'update '.WAITING_TABLE;
242    $query.= " set tn_ext = '".$extension."'";
243    $query.= ' where id = '.$_GET['waiting_id'];
244    $query.= ';';
245    pwg_query( $query );
246    $page['upload_successful'] = true;
247  }
248}
249
250//
251// Start output of page
252//
253$title= $lang['upload_title'];
254include(PHPWG_ROOT_PATH.'include/page_header.php');
255$template->set_filenames(array('upload'=>'upload.tpl'));
256
257$u_form = PHPWG_ROOT_PATH.'upload.php?cat='.$page['cat'];
258if ( isset( $page['waiting_id'] ) )
259{
260$u_form.= '&amp;waiting_id='.$page['waiting_id'];
261}
262
263if ( isset( $page['waiting_id'] ) )
264{
265  $advise_title=$lang['upload_advise_thumbnail'].$_FILES['picture']['name'];
266}
267else
268{
269  $advise_title = $lang['upload_advise'];
270  $advise_title.= get_cat_display_name($page['cat_name']);
271}
272
273$username = !empty($_POST['username'])?$_POST['username']:$user['username'];
274$mail_address = !empty($_POST['mail_address'])?$_POST['mail_address']:@$user['mail_address'];
275$name = !empty($_POST['name'])?$_POST['name']:'';
276$author = !empty($_POST['author'])?$_POST['author']:'';
277$date_creation = !empty($_POST['date_creation'])?$_POST['date_creation']:'';
278$comment = !empty($_POST['comment'])?$_POST['comment']:'';
279
280$template->assign_vars(array(
281  'ADVISE_TITLE' => $advise_title,
282  'NAME' => $username,
283  'EMAIL' => $mail_address,
284  'NAME_IMG' => $name,
285  'AUTHOR_IMG' => $author,
286  'DATE_IMG' => $date_creation,
287  'COMMENT_IMG' => $comment,
288
289  'L_TITLE' => $lang['upload_title'],
290  'L_USERNAME' => $lang['upload_username'],
291  'L_EMAIL' =>  $lang['mail_address'], 
292  'L_NAME_IMG' =>  $lang['upload_name'], 
293  'L_SUBMIT' =>  $lang['submit'],
294  'L_AUTHOR' =>  $lang['upload_author'], 
295  'L_CREATION_DATE' =>  $lang['upload_creation_date'], 
296  'L_COMMENT' =>  $lang['comment'],
297  'L_RETURN' =>  $lang['home'],
298  'L_RETURN_HINT' =>  $lang['home_hint'],
299  'L_UPLOAD_DONE' =>  $lang['upload_successful'],
300  'L_MANDATORY' =>  $lang['mandatory'],
301       
302  'F_ACTION' => $u_form,
303
304  'U_RETURN' => PHPWG_ROOT_PATH.'category.php?'.$_SERVER['QUERY_STRING']
305  ));
306 
307if ( !$page['upload_successful'] )
308{
309  $template->assign_block_vars('upload_not_successful',array());
310//-------------------------------------------------------------- errors display
311if ( sizeof( $error ) != 0 )
312{
313  $template->assign_block_vars('upload_not_successful.errors',array());
314  for ( $i = 0; $i < sizeof( $error ); $i++ )
315  {
316    $template->assign_block_vars('upload_not_successful.errors.error',array('ERROR'=>$error[$i]));
317  }
318}
319
320//--------------------------------------------------------------------- advises
321  if ( !empty($conf['upload_maxfilesize']) )
322  {
323    $content = $lang['upload_advise_filesize'];
324    $content.= $conf['upload_maxfilesize'].' KB';
325    $template->assign_block_vars('upload_not_successful.advise',array('ADVISE'=>$content));
326  }
327
328  if ( isset( $page['waiting_id'] ) )
329  {
330    if ( $conf['upload_maxwidth_thumbnail'] != '' )
331    {
332          $content = $lang['upload_advise_width'];
333      $content.= $conf['upload_maxwidth_thumbnail'].' px';
334          $template->assign_block_vars('upload_not_successful.advise',array('ADVISE'=>$content));
335    }
336    if ( $conf['upload_maxheight_thumbnail'] != '' )
337    {
338      $content = $lang['upload_advise_height'];
339      $content.= $conf['upload_maxheight_thumbnail'].' px';
340          $template->assign_block_vars('upload_not_successful.advise',array('ADVISE'=>$content));
341    }
342  }
343  else
344  {
345    if ( $conf['upload_maxwidth'] != '' )
346    {
347      $content = $lang['upload_advise_width'];
348      $content.= $conf['upload_maxwidth'].' px';
349          $template->assign_block_vars('upload_not_successful.advise',array('ADVISE'=>$content));
350    }
351    if ( $conf['upload_maxheight'] != '' )
352    {
353      $content = $lang['upload_advise_height'];
354      $content.= $conf['upload_maxheight'].' px';
355          $template->assign_block_vars('upload_not_successful.advise',array('ADVISE'=>$content));
356    }
357  }
358  $template->assign_block_vars('upload_not_successful.advise',array('ADVISE'=>$lang['upload_advise_filetype']));
359 
360//----------------------------------------- optionnal username and mail address
361  if ( !isset( $page['waiting_id'] ) )
362  {
363    $template->assign_block_vars('upload_not_successful.fields',array());
364        $template->assign_block_vars('note',array());
365  }
366}
367else
368{
369  $template->assign_block_vars('upload_successful',array());
370}
371//----------------------------------------------------------- html code display
372$template->parse('upload');
373include(PHPWG_ROOT_PATH.'include/page_tail.php');
374?>
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