* @copyright Copyright (C) 2026 Moko Consulting. All rights reserved.
* @license GNU General Public License version 3 or later; see LICENSE
*
* Custom field for SSH private key input.
* Supports both file upload (via FileReader JS) and paste-in textarea.
* The key content is stored in the database, not as a file on disk.
*/
namespace Joomla\Component\MokoSuiteBackup\Administrator\Field;
defined('_JEXEC') or die;
use Joomla\CMS\Form\FormField;
use Joomla\CMS\Language\Text;
class SshKeyField extends FormField
{
protected $type = 'SshKey';
protected function getInput(): string
{
$value = $this->value ?? '';
$id = $this->id;
$name = $this->name;
$decoded = !empty($value) ? (base64_decode($value, true) ?: '') : '';
$hasKey = !empty($value) && ($value === '__KEEP_EXISTING__'
|| str_contains($value, 'PRIVATE KEY')
|| str_contains($decoded, 'PRIVATE KEY'));
$html = '
';
/* Status badge */
if ($hasKey) {
$html .= ''
. ' '
. Text::_('COM_MOKOJOOMBACKUP_FIELD_SFTP_KEY_LOADED')
. '';
}
/* File upload button */
$html .= '';
$html .= '';
$html .= '';
if ($hasKey) {
$html .= ' ';
}
/* Hidden field — key data is NEVER rendered as visible text.
On existing keys, we submit a sentinel value to preserve the DB value
unless a new file is uploaded or clear is clicked. */
if ($hasKey) {
$html .= '';
} else {
$html .= '';
}
$html .= '