librenms-librenms/html/includes/forms/discovery-module-update.inc.php

<?php
header('Content-type: text/plain');

// FUA

if (is_admin() === false) {
    die('ERROR: You need to be admin');
}

$device['device_id'] = $_POST['device_id'];
$module              = 'discover_'.$_POST['discovery_module'];

if (!isset($module) && validate_device_id($device['device_id']) === false) {
    echo 'error with data';
    exit;
} else {
    if ($_POST['state'] == 'true') {
        $state = 1;
    } elseif ($_POST['state'] == 'false') {
        $state = 0;
    } else {
        $state = 0;
    }

    if (isset($attribs['discover_'.$module]) && $attribs['discover_'.$module] != $config['discover_modules'][$module]) {
        del_dev_attrib($device, $module);
    } else {
        set_dev_attrib($device, $module, $state);
    }
}