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<?php declare(strict_types = 0);
/*
** Zabbix
** Copyright (C) 2001-2023 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 CLink extends CTag {
private $csrf_token = '';
private $confirm_message = '';
private $url;
public function __construct($item = null, $url = null) {
parent::__construct('a', true);
if ($item !== null) {
$this->addItem($item);
}
$this->url = $url;
}
/**
* Adds CSRF token into the URL.
* POST method will be used for '_csrf_token' argument.
*
* @param string $csrf_token already generated CSRF token string.
*
* @return $this
*/
public function addCsrfToken(string $csrf_token) {
$this->csrf_token = $csrf_token;
return $this;
}
/*
* Add a confirmation message
*/
public function addConfirmation($value) {
$this->confirm_message = $value;
return $this;
}
/**
* Set URL target. If target is "_blank", add "rel" tag and tag values "noopener" and "noreferrer". The "noreferrer"
* depends if it is set to true in defines.inc.php.
*
* @param string $value URL target value.
*
* @return CLink
*/
public function setTarget(?string $value = null): self {
$this->setAttribute('target', $value);
if ($value === '_blank') {
$this->setAttribute('rel', 'noopener'.(ZBX_NOREFERER ? ' noreferrer' : ''));
}
return $this;
}
public function toString($destroy = true) {
$url = $this->url;
if ($url === null) {
$this->setAttribute('role', 'button');
}
if ($this->csrf_token != '') {
if (array_key_exists(ZBX_SESSION_NAME, $_COOKIE)) {
$url .= (strpos($url, '&') !== false || strpos($url, '?') !== false) ? '&' : '?';
$url .= CCsrfTokenHelper::CSRF_TOKEN_NAME.'='.$this->csrf_token;
}
$confirm_script = ($this->confirm_message !== '')
? 'Confirm('.json_encode($this->confirm_message).') && '
: '';
$this->onClick("javascript: return ".$confirm_script."redirect('".$url."', 'post', '".
CCsrfTokenHelper::CSRF_TOKEN_NAME."', true)"
);
$this->setAttribute('href', 'javascript:void(0)');
}
else {
$this->setAttribute('href', ($url == null) ? 'javascript:void(0)' : $url);
if ($this->confirm_message !== '') {
$this->onClick('javascript: return Confirm('.json_encode($this->confirm_message).');');
}
}
return parent::toString($destroy);
}
}