78 lines
1.9 KiB
PHP
78 lines
1.9 KiB
PHP
<?php
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/* Copyright (C) 2005-2007 Laurent Destailleur <eldy@users.sourceforge.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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* or see https://www.gnu.org/
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*/
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/**
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* \file htdocs/core/antispamimage.php
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* \brief Return antispam image
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*/
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define('NOLOGIN', 1);
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if (!defined('NOREQUIREUSER')) {
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define('NOREQUIREUSER', 1);
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}
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if (!defined('NOREQUIREDB')) {
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define('NOREQUIREDB', 1);
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}
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if (!defined('NOREQUIRETRAN')) {
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define('NOREQUIRETRAN', 1);
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}
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if (!defined('NOREQUIREMENU')) {
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define('NOREQUIREMENU', 1);
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}
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if (!defined('NOREQUIRESOC')) {
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define('NOREQUIRESOC', 1);
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}
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if (!defined('NOTOKENRENEWAL')) {
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define('NOTOKENRENEWAL', 1);
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}
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require_once '../main.inc.php';
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/*
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* View
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*/
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$length = 5;
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$letters = 'aAbBCDeEFgGhHJKLmMnNpPqQRsStTuVwWXYZz2345679';
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$number = strlen($letters);
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$string = '';
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for ($i = 0; $i < $length; $i++) {
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$string .= $letters[mt_rand(0, $number - 1)];
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}
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//print $string;
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$sessionkey = 'dol_antispam_value';
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$_SESSION[$sessionkey] = $string;
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$img = imagecreate(80, 32);
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if (empty($img)) {
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dol_print_error(null, "Problem with GD creation");
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exit;
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}
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// Define mime type
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top_httphead('image/png', 1);
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$background_color = imagecolorallocate($img, 250, 250, 250);
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$ecriture_color = imagecolorallocate($img, 0, 0, 0);
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imagestring($img, 4, 24, 8, $string, $ecriture_color);
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imagepng($img);
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