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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);
+ }
+} \ No newline at end of file