92 lines
2.4 KiB
Dart
92 lines
2.4 KiB
Dart
import 'dart:io';
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import 'package:selfprivacy/logic/models/json/dns_records.dart';
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import 'package:url_launcher/url_launcher.dart';
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enum DnsRecordStatus { ok, waiting, nonexistent }
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/// Check if DNS records were recognized.
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///
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/// Return pairs of full record name matched to its status.
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///
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/// If no record found, return just one pair of [domain] matched to critical non-existent status.
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///
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/// - [domain] - full domain delegated to SelfPrivacy (e.g. reimu.love)
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/// - [subdomains] - list of all subdomains we want to validate recods of (e.g. api, cloud...)
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/// - [ip4] - IP address of our server we want to validate DNS records by (e.g. 127.0.0.1)
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Future<Map<String, DnsRecordStatus>> validateDnsMatch(
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final String domain,
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final List<String> subdomains,
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final String ip4,
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) async {
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final Map<String, DnsRecordStatus> matches = <String, DnsRecordStatus>{};
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Future<void> lookup(final String address) async {
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await InternetAddress.lookup(address).then(
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(final records) {
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for (final record in records) {
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final bool isIpCorrect = record.address == ip4;
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matches[record.host] =
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isIpCorrect ? DnsRecordStatus.ok : DnsRecordStatus.waiting;
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}
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},
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);
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}
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try {
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await lookup(domain);
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for (final subdomain in subdomains) {
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await lookup('$subdomain.$domain');
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}
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} catch (e) {
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print(e);
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}
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if (matches.isEmpty) {
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matches[domain] = DnsRecordStatus.nonexistent;
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}
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return matches;
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}
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DnsRecord? extractDkimRecord(final List<DnsRecord> records) {
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DnsRecord? dkimRecord;
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for (final DnsRecord record in records) {
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if (record.type == 'TXT' && record.name == 'selector._domainkey') {
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dkimRecord = record;
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}
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}
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return dkimRecord;
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}
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String getHostnameFromDomain(final String domain) {
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// Replace all non-alphanumeric characters with an underscore
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String hostname =
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domain.split('.')[0].replaceAll(RegExp(r'[^a-zA-Z0-9]'), '-');
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if (hostname.endsWith('-')) {
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hostname = hostname.substring(0, hostname.length - 1);
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}
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if (hostname.startsWith('-')) {
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hostname = hostname.substring(1);
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}
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if (hostname.isEmpty) {
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hostname = 'selfprivacy-server';
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}
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return hostname;
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}
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void launchURL(final url) async {
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try {
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final Uri uri = Uri.parse(url);
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await launchUrl(
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uri,
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mode: LaunchMode.externalApplication,
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);
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} catch (e) {
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print(e);
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}
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}
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