<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2022 The Cacti Group                                 |
 |                                                                         |
 | 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 2          |
 | 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.                            |
 +-------------------------------------------------------------------------+
 | Cacti: The Complete RRDtool-based Graphing Solution                     |
 +-------------------------------------------------------------------------+
 | This code is designed, written, and maintained by the Cacti Group. See  |
 | about.php and/or the AUTHORS file for specific developer information.   |
 +-------------------------------------------------------------------------+
 | http://www.cacti.net/                                                   |
 +-------------------------------------------------------------------------+
*/

function input_validate_input_equals($value, $c_value) {
	if ($value != $c_value) {
		die_html_input_error();
	}
}

function input_validate_input_number($value) {
	if ((!is_numeric($value)) && ($value != '')) {
		die_html_input_error();
	}
}

function input_validate_input_regex($value, $regex) {
	if ($value != null && $value != '' && (!preg_match('/' . $regex . '/', $value))) {
		die_html_input_error();
	}
}

function html_log_input_error($variable) {
	cacti_debug_backtrace("Input Validation Not Performed for '$variable'");
}

function die_html_input_error($variable = '', $value = '', $message = '') {
	global $config;

	if ($message == '') {
		$message = __('Validation error for variable %s with a value of %s.  See backtrace below for more details.', html_escape($variable), html_escape($value));
	}

	if (isset_request_var('json')) {
		cacti_debug_backtrace('Validation Error' . ($variable != '' ? ', Variable:' . html_escape($variable):'') . ($value != '' ? ', Value:' . html_escape($value):''), false);
		print json_encode(
			array(
				'status' => '500',
				'statusText' => __('Validation Error'),
				'responseText' => $message
			)
		);
	} else {
		cacti_debug_backtrace('Validation Error' . ($variable != '' ? ', Variable:' . html_escape($variable):'') . ($value != '' ? ', Value:' . html_escape($value):''), true);

		print "<table style='width:100%;text-align:center;'><tr><td>$message</td></tr></table>";
		bottom_footer();
	}

	exit;
}

