Zabbix

<?php

/*

** Zabbix

** Copyright (C) 2001-2022 Zabbix SIA

**

** 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.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

​

class CHtmlUrlValidator {

​

    /**

     * URL is validated if schema validation is enabled by CSettingsHelper::VALIDATE_URI_SCHEMES parameter.

     *

     * Relative URL should start with .php file name.

     * Absolute URL schema must match schemes mentioned in ZBX_URL_VALID_SCHEMES comma separated list.

     *

     * @static

     *

     * @param string $url                              URL string to validate.

     * @param array  $options

     * @param bool   $options[allow_user_macro]        If set to be true, URLs containing user macros will be considered

     *                                                 as valid.

     * @param int    $options[allow_inventory_macro]   Enables the usage of trigger/host inventory macros:

     *                                                  - {INVENTORY.URL.A<1-9>}, {INVENTORY.URL.B<1-9>} and

     *                                                    {INVENTORY.URL.C<1-9>} if set to INVENTORY_URL_MACRO_TRIGGER;

     *                                                  - {INVENTORY.URL.A}, {INVENTORY.URL.B} and {INVENTORY.URL.C} if

     *                                                    set to INVENTORY_URL_MACRO_HOST;

     * @param bool   $options[allow_event_tags_macro]  If set to be true, URLs containing {EVENT.TAGS.<ref>} macros will

     *                                                 be considered as valid.

     * @param bool   $options[validate_uri_schemes]    Parameter allows to overwrite global switch

     *                                                 CSettingsHelper::VALIDATE_URI_SCHEMES for specific uses.

     *

     * @return bool

     */

    public static function validate($url, array $options = []) {

        $options += [

            'allow_user_macro' => true,

            'allow_event_tags_macro' => false,

            'allow_inventory_macro' => INVENTORY_URL_MACRO_NONE,

            'validate_uri_schemes' => (bool) CSettingsHelper::get(CSettingsHelper::VALIDATE_URI_SCHEMES)

        ];

​

        if ($options['validate_uri_schemes'] === false) {

            return true;

        }

​

        if ($options['allow_inventory_macro'] != INVENTORY_URL_MACRO_NONE) {

            $macro_parser = new CMacroParser([

                'macros' => ['{INVENTORY.URL.A}', '{INVENTORY.URL.B}', '{INVENTORY.URL.C}'],

                'ref_type' => ($options['allow_inventory_macro'] == INVENTORY_URL_MACRO_TRIGGER)