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<?php
/**
* Laconica, the distributed open-source microblogging tool
*
* Abstraction for an image file
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Image
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Zach Copley <zach@controlyourself.ca>
* @copyright 2008-2009 Control Yourself, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
if (!defined('LACONICA')) {
exit(1);
}
/**
* A wrapper on uploaded files
*
* Makes it slightly easier to accept an image file from upload.
*
* @category Image
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Zach Copley <zach@controlyourself.ca>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
class ImageFile
{
var $filename = null;
var $type = null;
function __construct($filename=null, $type=null)
{
$this->filename = $filename;
$this->type = $type;
}
static function fromUpload($param='upload')
{
switch ($_FILES[$param]['error']) {
case UPLOAD_ERR_OK: // success, jump out
break;
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
throw new Exception(_('That file is too big.'));
return;
case UPLOAD_ERR_PARTIAL:
@unlink($_FILES[$param]['tmp_name']);
throw new Exception(_('Partial upload.'));
return;
default:
throw new Exception(_('System error uploading file.'));
return;
}
$imagefile = new ImageFile($_FILES[$param]['tmp_name']);
$info = @getimagesize($imagefile->filename);
if (!$info) {
@unlink($imagefile->filename);
throw new Exception(_('Not an image or corrupt file.'));
return;
}
switch ($info[2]) {
case IMAGETYPE_GIF:
case IMAGETYPE_JPEG:
case IMAGETYPE_PNG:
$imagefile->type = $info[2];
break;
default:
@unlink($imagefile->filename);
throw new Exception(_('Unsupported image file format.'));
return;
}
return $imagefile;
}
function unlink()
{
@unlink($this->filename);
}
}
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