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Refactoring

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This commit is contained in:
M66B
2020-04-16 18:28:12 +02:00
parent 6412c518cd
commit 3932d0fa65
3 changed files with 25 additions and 54 deletions
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65
app/src/main/java/eu/faircode/email/DnsHelper.java
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@@ -48,58 +48,29 @@ public class DnsHelper {
// https://dns.watch/
private static final String DEFAULT_DNS = "84.200.69.80";
static boolean lookupMx(Context context, Address[] addresses) throws UnknownHostException {
boolean ok = true;
static void checkMx(Context context, Address[] addresses) throws UnknownHostException {
if (addresses == null)
return;
if (addresses != null)
for (Address address : addresses)
try {
String email = ((InternetAddress) address).getAddress();
if (email == null)
continue;
for (Address address : addresses) {
String email = ((InternetAddress) address).getAddress();
if (email == null)
continue;
int d = email.lastIndexOf("@");
if (d < 0)
continue;
int d = email.lastIndexOf("@");
if (d < 0)
continue;
String domain = email.substring(d + 1);
Lookup lookup = new Lookup(domain, Type.MX);
SimpleResolver resolver = new SimpleResolver(getDnsServer(context));
lookup.setResolver(resolver);
Log.i("Lookup MX=" + domain + " @" + resolver.getAddress());
lookup.run();
if (lookup.getResult() == Lookup.HOST_NOT_FOUND ||
lookup.getResult() == Lookup.TYPE_NOT_FOUND) {
Log.i("Lookup MX=" + domain + " result=" + lookup.getErrorString());
throw new UnknownHostException(context.getString(R.string.title_no_server, domain));
} else if (lookup.getResult() != Lookup.SUCCESSFUL)
ok = false;
} catch (UnknownHostException ex) {
throw ex;
} catch (Throwable ex) {
Log.e(ex);
ok = false;
}
return ok;
String domain = email.substring(d + 1);
lookup(context, domain, "mx");
}
}
static InetAddress lookupMx(Context context, String domain) {
try {
Lookup lookup = new Lookup(domain, Type.MX);
SimpleResolver resolver = new SimpleResolver(getDnsServer(context));
lookup.setResolver(resolver);
Log.i("Lookup MX=" + domain + " @" + resolver.getAddress());
lookup.run();
if (lookup.getResult() == Lookup.SUCCESSFUL) {
Record[] answers = lookup.getAnswers();
if (answers != null && answers.length > 0 && answers[0] instanceof MXRecord) {
MXRecord mx = (MXRecord) answers[0];
return InetAddress.getByName(mx.getTarget().toString(true));
}
}
DnsRecord[] records = lookup(context, domain, "mx");
if (records.length > 0)
return InetAddress.getByName(records[0].name);
} catch (Throwable ex) {
Log.w(ex);
}
@@ -218,10 +189,10 @@ public class DnsHelper {
static void test(Context context) {
try {
String domain = "gmail.com";
boolean ok = lookupMx(context, new Address[]{Log.myAddress()});
checkMx(context, new Address[]{Log.myAddress()});
InetAddress iaddr = lookupMx(context, domain);
DnsRecord[] records = DnsHelper.lookup(context, "_imaps._tcp." + domain, "srv");
Log.i("DNS ok=" + ok + " iaddr=" + iaddr + " srv=" + records[0].name + ":" + records[0].port);
Log.i("DNS iaddr=" + iaddr + " srv=" + records[0].name + ":" + records[0].port);
} catch (Throwable ex) {
Log.e("DNS", ex);
}