From ae048fb16bc6b2b2d7e5084db18c62cb379ffe1d Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Mon, 27 Apr 2020 13:38:32 +0200
Subject: [rebootcontrol/statistics] Move subnet size handling to hook

---
 .../rebootcontrol/hooks/client-update.inc.php      | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 modules-available/rebootcontrol/hooks/client-update.inc.php

diff --git a/modules-available/rebootcontrol/hooks/client-update.inc.php b/modules-available/rebootcontrol/hooks/client-update.inc.php
new file mode 100644
index 00000000..48c16b66
--- /dev/null
+++ b/modules-available/rebootcontrol/hooks/client-update.inc.php
@@ -0,0 +1,24 @@
+<?php
+
+if ($type === '~poweron') {
+	$subnet = Request::post('subnet', false, 'string');
+	if ($subnet !== false && ($subnet = explode('/', $subnet)) !== false && count($subnet) === 2
+		&& $subnet[0] === $ip && $subnet[1] >= 8 && $subnet[1] < 32) {
+		$start = ip2long($ip);
+		if ($start !== false) {
+			$maskHost = (int)(pow(2, 32 - $subnet[1]) - 1);
+			$maskNet = ~$maskHost & 0xffffffff;
+			$end = $start | $maskHost;
+			$start &= $maskNet;
+			$netparams = ['start' => sprintf('%u', $start), 'end' => sprintf('%u', $end), 'now' => $NOW];
+			$affected = Database::exec('UPDATE reboot_subnet
+							SET lastseen = :now, seencount = seencount + 1
+							WHERE start = :start AND end = :end', $netparams);
+			if ($affected === 0) {
+				// New entry
+				Database::exec('INSERT INTO reboot_subnet (start, end, fixed, isdirect, lastseen, seencount)
+								VALUES (:start, :end, 0, 0, :now, 1)', $netparams);
+			}
+		}
+	}
+}
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