<?php
// +-----------------------------------------------------------------------+
// | Piwigo - a PHP based picture gallery                                  |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2008-2010 Piwigo Team                  http://piwigo.org |
// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify  |
// | it under the terms of the GNU General Public License as published by  |
// | the Free Software Foundation                                          |
// |                                                                       |
// | This program is distributed in the hope that it will be useful, but   |
// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
// | General Public License for more details.                              |
// |                                                                       |
// | You should have received a copy of the GNU General Public License     |
// | along with this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+

define('PHPWG_ROOT_PATH','./');

// +-----------------------------------------------------------------------+
// | Includes                                                              |
// +-----------------------------------------------------------------------+
include_once(PHPWG_ROOT_PATH.'include/common.inc.php');

// +-----------------------------------------------------------------------+
// | Check Access and exit when user status is not ok                      |
// +-----------------------------------------------------------------------+
check_status($conf['upload_user_access']);

$username = !empty($_POST['username']) ? $_POST['username']:(is_classic_user() ? $user['username'] : '');
$mail_address = !empty($_POST['mail_address']) ? $_POST['mail_address'] : (is_classic_user() ? $user['email'] : '');
$name = !empty($_POST['name']) ? $_POST['name'] : '';
$author = !empty($_POST['author']) ? $_POST['author'] : (is_classic_user() ? $user['username'] : '');
$date_creation = !empty($_POST['date_creation']) ? $_POST['date_creation'] : '';
$comment = !empty($_POST['comment']) ? $_POST['comment'] : '';

//------------------------------------------------------------------- functions
// The validate_upload function checks if the image of the given path is valid.
// A picture is valid when :
//     - width, height and filesize are not higher than the maximum
//       filesize authorized by the administrator
//     - the type of the picture is among jpg, gif and png
// The function returns an array containing :
//     - $result['type'] contains the type of the image ('jpg', 'gif' or 'png')
//     - $result['error'] contains an array with the different errors
//       found with the picture
function validate_upload( $temp_name, $my_max_file_size,
                          $image_max_width, $image_max_height )
{
  global $conf, $lang, $page, $mail_address;

  $result = array();
  $result['error'] = array();
  //echo $_FILES['picture']['name']."<br />".$temp_name;
  $extension = get_extension( $_FILES['picture']['name'] );
  if (!in_array($extension, $conf['picture_ext']))
  {
    array_push( $result['error'], l10n('the picture must be to the fileformat jpg, gif or png') );
    return $result;
  }
  if ( !isset( $_FILES['picture'] ) )
  {
    // do we even have a file?
    array_push( $result['error'], "You did not upload anything!" );
  }
  else if ( $_FILES['picture']['size'] > $my_max_file_size * 1024 )
  {
    array_push( $result['error'],
                l10n('the filesize of the picture must not exceed :').$my_max_file_size.' KB' );
  }
  else
  {
    // check if we are allowed to upload this file_type
    // upload de la photo sous un nom temporaire
    if ( !move_uploaded_file( $_FILES['picture']['tmp_name'], $temp_name ) )
    {
      array_push( $result['error'], l10n('can\'t upload the picture on the server') );
    }
    else
    {
      $size = getimagesize( $temp_name );
      if ( isset( $image_max_width )
           and $image_max_width != ""
           and $size[0] > $image_max_width )
      {
        array_push( $result['error'],
                    l10n('the width of the picture must not exceed :').$image_max_width.' px' );
      }
      if ( isset( $image_max_height )
           and $image_max_height != ""
           and $size[1] > $image_max_height )
      {
        array_push( $result['error'],
                    l10n('the height of the picture must not exceed :').$image_max_height.' px' );
      }
      // $size[2] == 1 means GIF
      // $size[2] == 2 means JPG
      // $size[2] == 3 means PNG
      switch ( $size[2] )
      {
      case 1 : $result['type'] = 'gif'; break;
      case 2 : $result['type'] = 'jpg'; break;
      case 3 : $result['type'] = 'png'; break;
      default :
        array_push( $result['error'], l10n('the picture must be to the fileformat jpg, gif or png') );
      }
    }
  }
  if ( sizeof( $result['error'] ) > 0 )
  {
    // destruction de l'image avec le nom temporaire
    @unlink( $temp_name );
  }
  else
  {
    @chmod( $temp_name, 0644);
  }

  //------------------------------------------------------------ log informations
  pwg_log();

  return $result;
}

//-------------------------------------------------- access authorization check
if (isset($_POST['category']) and is_numeric($_POST['category']))
{
  $page['category'] = $_POST['category'];
}
else
if (isset($_GET['cat']) and is_numeric($_GET['cat']))
{
  $page['category'] = $_GET['cat'];
}
else
{
  $page['category'] = null;
}

if (! empty($page['category']))
{
  check_restrictions($page['category']);
  $category = get_cat_info($page['category']);
  $category['cat_dir'] = get_complete_dir($page['category']);

  if (url_is_remote($category['cat_dir']) or !$category['uploadable'])
  {
    page_forbidden('upload not allowed');
  }
}
else
{
  if (isset($_POST['submit']))
  {
    // $page['category'] may be set by a futur plugin but without it
    bad_request('invalid parameters');
  }
  else
  {
    $category = null;
  }
}

$error = array();
$page['upload_successful'] = false;
if ( isset( $_GET['waiting_id'] ) )
{
  $page['waiting_id'] = $_GET['waiting_id'];
}

//-------------------------------------------------------------- picture upload
// verfying fields
if ( isset( $_POST['submit'] ) and !isset( $_GET['waiting_id'] ) )
{
  $path = $category['cat_dir'].$_FILES['picture']['name'];
  if ( @is_file( $path ) )
  {
    array_push( $error, l10n('A picture\'s name already used') );
  }
  // test de la présence des champs obligatoires
  if ( empty($_FILES['picture']['name']))
  {
    array_push( $error, l10n('You must choose a picture fileformat for the image') );
  }
  if ( !preg_match( '/([_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)+)/',
             $_POST['mail_address'] ) )
  {
    array_push( $error, l10n('mail address must be like xxx@yyy.eee (example : jack@altern.org)') );
  }
  if ( empty($_POST['username']) )
  {
    array_push( $error, l10n('the username must be given') );
  }

  $date_creation = '';
  if ( !empty($_POST['date_creation']) )
  {
    list( $day,$month,$year ) = explode( '/', $_POST['date_creation'] );
    // int checkdate ( int month, int day, int year)
    if (checkdate($month, $day, $year))
    {
      $date_creation = $year.'-'.$month.'-'.$day;
    }
    else
    {
      array_push( $error, l10n('wrong date') );
    }
  }
  // creation of the "infos" field :
  // <infos author="Pierrick LE GALL" comment="my comment"
  //        date_creation="2004-08-14" name="" />
  $xml_infos = '<infos ';
  $xml_infos.= encodeAttribute('author', $_POST['author']);
  $xml_infos.= encodeAttribute('comment', $_POST['comment']);
  $xml_infos.= encodeAttribute('date_creation', $date_creation);
  $xml_infos.= encodeAttribute('name', $_POST['name']);
  $xml_infos.= ' />';

  if ( !preg_match( '/^[a-zA-Z0-9-_.]+$/', $_FILES['picture']['name'] ) )
  {
    array_push( $error, l10n('wrong filename') );
  }

  if ( sizeof( $error ) == 0 )
  {
    $result = validate_upload( $path, $conf['upload_maxfilesize'],
                               $conf['upload_maxwidth'],
                               $conf['upload_maxheight']  );
    for ( $j = 0; $j < sizeof( $result['error'] ); $j++ )
    {
      array_push( $error, $result['error'][$j] );
    }
  }

  if ( sizeof( $error ) == 0 )
  {
    $query = 'insert into '.WAITING_TABLE;
    $query.= ' (storage_category_id,file,username,mail_address,date,infos)';
    $query.= ' values ';
    $query.= '('.$page['category'].",'".$_FILES['picture']['name']."'";
    $query.= ",'".htmlspecialchars( $_POST['username'], ENT_QUOTES)."'";
    $query.= ",'".$_POST['mail_address']."',".time().",'".$xml_infos."')";
    $query.= ';';
    pwg_query( $query );
    $page['waiting_id'] = pwg_db_insert_id(WAITING_TABLE);

    if ($conf['email_admin_on_picture_uploaded'])
    {
      include_once(PHPWG_ROOT_PATH.'include/functions_mail.inc.php');

      $waiting_url = get_absolute_root_url().'admin.php?page=upload';

      $keyargs_content = array
      (
        get_l10n_args('Category: %s', get_cat_display_name($category['upper_names'], null, false)),
        get_l10n_args('Picture name: %s', $_FILES['picture']['name']),
        get_l10n_args('User: %s', $_POST['username']),
        get_l10n_args('Email: %s', $_POST['mail_address']),
        get_l10n_args('Picture name: %s', $_POST['name']),
        get_l10n_args('Author: %s', $_POST['author']),
        get_l10n_args('Creation date: %s', $_POST['date_creation']),
        get_l10n_args('Comment: %s', $_POST['comment']),
        get_l10n_args('', ''),
        get_l10n_args('Waiting page: %s', $waiting_url)
      );

      pwg_mail_notification_admins
      (
        get_l10n_args('Picture uploaded by %s', $_POST['username']),
        $keyargs_content
      );
    }
  }
}

//------------------------------------------------------------ thumbnail upload
if ( isset( $_POST['submit'] ) and isset( $_GET['waiting_id'] ) )
{
  // upload of the thumbnail
  $query = 'select file';
  $query.= ' from '.WAITING_TABLE;
  $query.= ' where id = '.$_GET['waiting_id'];
  $query.= ';';
  $result= pwg_query( $query );
  $row = pwg_db_fetch_assoc( $result );
  $file = substr ( $row['file'], 0, strrpos ( $row['file'], ".") );
  $extension = get_extension( $_FILES['picture']['name'] );

  if (($path = mkget_thumbnail_dir($category['cat_dir'], $error)) != false)
  {
    $path.= '/'.$conf['prefix_thumbnail'].$file.'.'.$extension;
    $result = validate_upload( $path, $conf['upload_maxfilesize'],
                               $conf['upload_maxwidth_thumbnail'],
                               $conf['upload_maxheight_thumbnail']  );
    for ( $j = 0; $j < sizeof( $result['error'] ); $j++ )
    {
      array_push( $error, $result['error'][$j] );
    }
  }

  if ( sizeof( $error ) == 0 )
  {
    $query = 'update '.WAITING_TABLE;
    $query.= " set tn_ext = '".$extension."'";
    $query.= ' where id = '.$_GET['waiting_id'];
    $query.= ';';
    pwg_query( $query );
    $page['upload_successful'] = true;
  }
}

//
// Start output of page
//
$title= l10n('Upload a picture');
$page['body_id'] = 'theUploadPage';
include(PHPWG_ROOT_PATH.'include/page_header.php');
$template->set_filenames(array('upload'=>'upload.tpl'));

// Load category list
$query = '
SELECT
  id, name, uppercats, global_rank
FROM '.CATEGORIES_TABLE.' INNER JOIN '.USER_CACHE_CATEGORIES_TABLE.'
  ON id = cat_id and user_id = '.$user['id'].'
WHERE
  uploadable = \'true\'
  '.get_sql_condition_FandF
    (
      array
        (
          'visible_categories' => 'id',
        ),
      'AND'
    ).'
;';
display_select_cat_wrapper($query, array($page['category']), 'categories');

$u_form = PHPWG_ROOT_PATH.'upload.php?cat='.$page['category'];
if ( isset( $page['waiting_id'] ) )
{
$u_form.= '&amp;waiting_id='.$page['waiting_id'];
}

if ( isset( $page['waiting_id'] ) )
{
  $advise_title = l10n('Optional, but recommended : choose a thumbnail to associate to').' '.$_FILES['picture']['name'];
}
else
{
  $advise_title = l10n('Choose an image');
}

$template->assign(
  array(
    'ADVISE_TITLE' => $advise_title,
    'NAME' => stripslashes($username),
    'EMAIL' => $mail_address,
    'NAME_IMG' => $name,
    'AUTHOR_IMG' => stripslashes($author),
    'DATE_IMG' => $date_creation,
    'COMMENT_IMG' => $comment,

    'F_ACTION' => $u_form,

    'U_RETURN' => make_index_url(array('category' => $category)),
    )
  );

$template->assign('errors', $error);
$template->assign('UPLOAD_SUCCESSFUL', $page['upload_successful'] );

if ( !$page['upload_successful'] )
{
//--------------------------------------------------------------------- advises
  if ( !empty($conf['upload_maxfilesize']) )
  {
    $content = l10n('the filesize of the picture must not exceed :');
    $content.= $conf['upload_maxfilesize'].' KB';
    $template->append('advises', $content);
  }

  if ( isset( $page['waiting_id'] ) )
  {
    if ( $conf['upload_maxwidth_thumbnail'] != '' )
    {
      $content = l10n('the width of the picture must not exceed :');
      $content.= $conf['upload_maxwidth_thumbnail'].' px';
      $template->append('advises', $content);
    }
    if ( $conf['upload_maxheight_thumbnail'] != '' )
    {
      $content = l10n('the height of the picture must not exceed :');
      $content.= $conf['upload_maxheight_thumbnail'].' px';
      $template->append('advises', $content);
    }
  }
  else
  {
    if ( $conf['upload_maxwidth'] != '' )
    {
      $content = l10n('the width of the picture must not exceed :');
      $content.= $conf['upload_maxwidth'].' px';
      $template->append('advises', $content);
    }
    if ( $conf['upload_maxheight'] != '' )
    {
      $content = l10n('the height of the picture must not exceed :');
      $content.= $conf['upload_maxheight'].' px';
      $template->append('advises', $content);
    }
  }
  $template->append('advises', l10n('the picture must be to the fileformat jpg, gif or png'));

//----------------------------------------- optionnal username and mail address
  if ( !isset( $page['waiting_id'] ) )
  {
    $template->assign('SHOW_FORM_FIELDS', true);
  }
}

//----------------------------------------------------------- html code display
$template->parse('upload');
include(PHPWG_ROOT_PATH.'include/page_tail.php');
?>
