!str_ends_with($elements[0], $filter_domain),
false => $elements[0] !== $filter_domain,
})
continue; // Ignore records for other domains
if (!in_array($elements[2], $types, true))
continue; // Ignore records generated by Knot
array_push($parsed_zone_content, $elements);
}
return $parsed_zone_content;
}
function knotc(array $cmds, array &$output = NULL, int &$return_code = NULL): void {
exescape([
CONF['dns']['knotc_path'],
'--blocking',
'--timeout',
'20',
'--',
...$cmds,
], $output, $return_code);
}
function knotcConfExec(array $cmds): void {
knotc(['conf-begin'], $output['begin'], $code['begin']);
if ($code['begin'] !== 0)
output(500, 'knotcConfExec: knotc failed with exit code ' . $code['begin'] . ': ' . $output['begin'][0] . '.');
foreach ($cmds as $cmd) {
knotc($cmd, $output['op'], $code['op']);
if ($code['op'] !== 0) {
knotc(['conf-abort']);
output(500, 'knotcConfExec: knotc failed with exit code ' . $code['op'] . ': ' . $output['op'][0] . '.');
}
}
knotc(['conf-commit'], $output['commit'], $code['commit']);
if ($code['commit'] !== 0) {
knotc(['conf-abort']);
output(500, 'knotcConfExec: knotc failed with exit code ' . $code['commit'] . ': ' . $output['commit'][0] . '.');
}
}
function knotcZoneExec(string $zone, array $cmd, string $action = NULL): void {
$action = checkAction($action ?? $_POST['action']);
knotc(['zone-begin', $zone], $output['begin'], $code['begin']);
if ($code['begin'] !== 0)
output(500, 'knotcZoneExec: knotc failed with exit code ' . $code['begin'] . ': ' . $output['begin'][0] . '.');
knotc(['zone-' . $action . 'set', $zone, ...$cmd], $output['op'], $code['op']);
if ($code['op'] !== 0) {
knotc(['zone-abort', $zone]);
output(500, 'knotcZoneExec: knotc failed with exit code ' . $code['op'] . ': ' . $output['op'][0] . '.');
}
knotc(['zone-commit', $zone], $output['commit'], $code['commit']);
if ($code['commit'] !== 0) {
knotc(['zone-abort', $zone]);
output(500, 'knotcZoneExec: knotc failed with exit code ' . $code['commit'] . ': ' . $output['commit'][0] . '.');
}
}
function checkIpFormat(string $ip): string {
return match ($ip) {
filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) => 'AAAA',
filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) => 'A',
default => output(403, _('IP address malformed.')),
};
}
function checkAbsoluteDomainFormat(string $domain): void { // If the domain must end with a dot
if (!filter_var($domain, FILTER_VALIDATE_DOMAIN) OR preg_match('/^(?=^.{1,254}$)([a-z0-9_-]{1,63}\.){2,127}$/D', $domain) !== 1)
output(403, _('Domain malformed.'));
}
function formatEndWithDot(string $str): string {
if (!str_ends_with($str, '.'))
$str .= '.';
return $str;
}
function formatAbsoluteDomain(string $domain): string {
$domain = formatEndWithDot(strtolower($domain));
checkAbsoluteDomainFormat($domain);
return $domain;
}
function checkAction(string $action): string {
return match ($action) {
'add' => '',
'delete' => 'un',
default => output(403, 'Wrong value for action.'),
};
}