<?php
class RemoteAccess
{
const PROP_ALLOWED_VNC_NET = 'remoteaccess.allowedvncaccess';
const PROP_TRY_VIRT_HANDOVER = 'remoteaccess.virthandover';
public static function getEnabledLocations($group = 0)
{
if ($group === 0) {
return Database::queryColumnArray("SELECT DISTINCT rxl.locationid FROM remoteaccess_x_location rxl
INNER JOIN remoteaccess_group g ON (g.groupid = rxl.groupid AND g.active = 1)");
}
return Database::queryColumnArray("SELECT DISTINCT locationid FROM remoteaccess_x_location
WHERE groupid = :gid", ['gid' => $group]);
}
public static function ensureMachinesRunning()
{
if (!Module::isAvailable('rebootcontrol')) {
error_log("Not waking remote access machines: rebootcontrol missing");
return;
}
$res = Database::simpleQuery("SELECT rg.groupid, rg.groupname, rg.wolcount, GROUP_CONCAT(rxl.locationid) AS locs FROM remoteaccess_group rg
INNER JOIN remoteaccess_x_location rxl USING (groupid)
WHERE rg.active = 1
GROUP BY groupid");
// Consider machines we tried to wake in the past 90 seconds as online
$wolDeadline = time() - 90;
while ($row = $res->fetch(PDO::FETCH_ASSOC)) {
if ($row['wolcount'] <= 0)
continue;
// This can't really be anything but a CSV list, but better be safe
$locs = preg_replace('/[^0-9,]/', '', $row['locs']);
if (empty($locs))
continue;
$active = Database::queryFirst("SELECT Count(*) AS cnt FROM machine m
INNER JOIN remoteaccess_machine rm USING (machineuuid)
WHERE m.locationid IN ($locs) AND (m.state = 'IDLE' OR rm.woltime > $wolDeadline)");
$active = (isset($active['cnt']) ? $active['cnt'] : 0);
$wantNum = $row['wolcount'] - $active;
if ($wantNum <= 0)
continue;
self::tryWakeMachines($locs, $wantNum);
}
}
private static function tryWakeMachines($locs, $num)
{
$res = Database::simpleQuery("SELECT m.machineuuid, m.macaddr, m.clientip FROM machine m
LEFT JOIN remoteaccess_machine rm USING (machineuuid)
WHERE m.locationid IN ($locs) AND m.state IN ('OFFLINE', 'STANDBY')
ORDER BY rm.woltime ASC");
$NOW = time();
while ($num > 0) {
$list = [];
for ($i = 0; $i < $num && $row = $res->fetch(PDO::FETCH_ASSOC); ++$i) {
$list[] = $row;
Database::exec("INSERT INTO remoteaccess_machine (machineuuid, password, woltime)
VALUES (:uuid, NULL, :now)
ON DUPLICATE KEY UPDATE woltime = VALUES(woltime)",
['uuid' => $row['machineuuid'], 'now' => $NOW]);
}
if (empty($list))
break; // No more clients in this location
RebootControl::wakeMachines($list, $fails);
$num -= count($list) - count($fails);
if (!empty($fails)) {
$failIds = ArrayUtil::flattenByKey($fails, 'machineuuid');
// Reduce time so they won't be marked as wol_in_progress
Database::exec('UPDATE remoteaccess_machine SET woltime = :faketime WHERE machineuuid IN (:fails)',
['faketime' => $NOW - 95, 'fails' => $failIds]);
}
}
if ($num > 0) {
error_log("Could not wake $num clients in ($locs)...");
}
}
}
