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- <?php
- /* Copyright (C) 2005-2007 Laurent Destailleur <eldy@users.sourceforge.net>
- *
- * 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; 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- * or see https://www.gnu.org/
- */
- /**
- * \file htdocs/core/antispamimage.php
- * \brief Return antispam image
- */
- define('NOLOGIN', 1);
- if (!defined('NOREQUIREUSER')) {
- define('NOREQUIREUSER', 1);
- }
- if (!defined('NOREQUIREDB')) {
- define('NOREQUIREDB', 1);
- }
- if (!defined('NOREQUIRETRAN')) {
- define('NOREQUIRETRAN', 1);
- }
- if (!defined('NOREQUIREMENU')) {
- define('NOREQUIREMENU', 1);
- }
- if (!defined('NOREQUIRESOC')) {
- define('NOREQUIRESOC', 1);
- }
- if (!defined('NOTOKENRENEWAL')) {
- define('NOTOKENRENEWAL', 1);
- }
- require_once '../main.inc.php';
- /*
- * View
- */
- $length = 5;
- $letters = 'aAbBCDeEFgGhHJKLmMnNpPqQRsStTuVwWXYZz2345679';
- $number = strlen($letters);
- $string = '';
- for ($i = 0; $i < $length; $i++) {
- $string .= $letters[mt_rand(0, $number - 1)];
- }
- //print $string;
- $sessionkey = 'dol_antispam_value';
- $_SESSION[$sessionkey] = $string;
- $img = imagecreate(80, 32);
- if (empty($img)) {
- dol_print_error('', "Problem with GD creation");
- exit;
- }
- // Define mime type
- top_httphead('image/png', 1);
- $background_color = imagecolorallocate($img, 250, 250, 250);
- $ecriture_color = imagecolorallocate($img, 0, 0, 0);
- imagestring($img, 4, 24, 8, $string, $ecriture_color);
- imagepng($img);
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