Security fix: unauthorized access (#10091)

* Security fix: unauthorized access
Affects nginx users:
Moved php files outside of public html directory (Apache was protected by .htaccess)

Affects all users:
Some files did not check for authentication and could disclose some info.
Better checks before including files from user input

* git mv html/includes/ includes/html
git mv html/pages/ includes/html/

includes/html/forms/update-notes.inc.php

@@ -0,0 +1,39 @@
+<?php
+/*
+ * LibreNMS
+ *
+ * Copyright (c) 2015 Søren Friis Rosiak <sorenrosiak@gmail.com>
+ * 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 3 of the License, or (at your
+ * option) any later version.  Please see LICENSE.txt at the top level of
+ * the source code distribution for details.
+ */
+
+use LibreNMS\Authentication\LegacyAuth;
+
+header('Content-type: application/json');
+
+$status    = 'error';
+$message   = 'unknown error';
+
+$device_id = mres($_POST['device_id']);
+$notes = $_POST['notes'];
+
+if (!LegacyAuth::user()->hasGlobalAdmin()) {
+    $message = 'Only admin accounts can update notes';
+} elseif (isset($notes) && (dbUpdate(array('notes' => $notes), 'devices', 'device_id = ?', array($device_id)))) {
+    $status  = 'ok';
+    $message = 'Updated';
+} else {
+    $status  = 'error';
+    $message = 'ERROR: Could not update';
+}
+echo _json_encode(
+    array(
+        'status'       => $status,
+        'message'      => $message,
+        'notes'        => $notes,
+        'device_id'    => $device_id,
+    )
+);