104 lines
3.7 KiB
PHP
104 lines
3.7 KiB
PHP
<?php declare(strict_types=1);
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function parseZoneFile(string $zone_content, array $types, bool|string $filter_domain = false, bool $filter_include_subdomains = true): array {
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$parsed_zone_content = [];
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foreach (explode(LF, $zone_content) as $zone_line) {
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if ($zone_line === '' OR str_starts_with($zone_line, ';'))
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continue; // Ignore empty lines and comments
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$elements = preg_split('/[\t ]+/', $zone_line, 4);
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if ($filter_domain !== false AND match ($filter_include_subdomains) {
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true => !str_ends_with($elements[0], $filter_domain),
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false => $elements[0] !== $filter_domain,
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})
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continue; // Ignore records for other domains
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if (!in_array($elements[2], $types, true))
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continue; // Ignore records generated by Knot
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array_push($parsed_zone_content, $elements);
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}
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return $parsed_zone_content;
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}
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function knotc(array $cmds, array &$output = NULL, int &$return_code = NULL): void {
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exescape([
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CONF['dns']['knotc_path'],
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'--blocking',
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'--timeout',
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'20',
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'--',
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...$cmds,
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], $output, $return_code);
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}
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function knotcConfExec(array $cmds): void {
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knotc(['conf-begin'], $output['begin'], $code['begin']);
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if ($code['begin'] !== 0)
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output(500, 'knotcConfExec: <code>knotc</code> failed with exit code <samp>' . $code['begin'] . '</samp>: <samp>' . $output['begin'][0] . '</samp>.');
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foreach ($cmds as $cmd) {
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knotc($cmd, $output['op'], $code['op']);
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if ($code['op'] !== 0) {
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knotc(['conf-abort']);
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output(500, 'knotcConfExec: <code>knotc</code> failed with exit code <samp>' . $code['op'] . '</samp>: <samp>' . $output['op'][0] . '</samp>.');
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}
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}
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knotc(['conf-commit'], $output['commit'], $code['commit']);
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if ($code['commit'] !== 0) {
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knotc(['conf-abort']);
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output(500, 'knotcConfExec: <code>knotc</code> failed with exit code <samp>' . $code['commit'] . '</samp>: <samp>' . $output['commit'][0] . '</samp>.');
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}
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}
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function knotcZoneExec(string $zone, array $cmd, string $action = NULL): void {
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$action = checkAction($action ?? $_POST['action']);
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knotc(['zone-begin', $zone], $output['begin'], $code['begin']);
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if ($code['begin'] !== 0)
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output(500, 'knotcZoneExec: <code>knotc</code> failed with exit code <samp>' . $code['begin'] . '</samp>: <samp>' . $output['begin'][0] . '</samp>.');
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knotc(['zone-' . $action . 'set', $zone, ...$cmd], $output['op'], $code['op']);
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if ($code['op'] !== 0) {
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knotc(['zone-abort', $zone]);
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output(500, 'knotcZoneExec: <code>knotc</code> failed with exit code <samp>' . $code['op'] . '</samp>: <samp>' . $output['op'][0] . '</samp>.');
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}
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knotc(['zone-commit', $zone], $output['commit'], $code['commit']);
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if ($code['commit'] !== 0) {
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knotc(['zone-abort', $zone]);
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output(500, 'knotcZoneExec: <code>knotc</code> failed with exit code <samp>' . $code['commit'] . '</samp>: <samp>' . $output['commit'][0] . '</samp>.');
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}
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}
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function checkIpFormat(string $ip): string {
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return match ($ip) {
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filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) => 'AAAA',
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filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) => 'A',
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default => output(403, _('IP address malformed.')),
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};
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}
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function checkAbsoluteDomainFormat(string $domain): void { // If the domain must end with a dot
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if (!filter_var($domain, FILTER_VALIDATE_DOMAIN) OR preg_match('/^(?=^.{1,254}$)([a-z0-9_-]{1,63}\.){2,127}$/D', $domain) !== 1)
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output(403, _('Domain malformed.'));
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}
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function formatEndWithDot(string $str): string {
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if (!str_ends_with($str, '.'))
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$str .= '.';
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return $str;
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}
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function formatAbsoluteDomain(string $domain): string {
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$domain = formatEndWithDot(strtolower($domain));
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checkAbsoluteDomainFormat($domain);
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return $domain;
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}
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function checkAction(string $action): string {
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return match ($action) {
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'add' => '',
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'delete' => 'un',
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default => output(403, 'Wrong value for action.'),
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};
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}
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