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Code Issues Releases Wiki Activity

Use all available methods to scan MX host

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This commit is contained in:
M66B 2020-01-31 10:18:26 +01:00
parent e9c19ff2a4
commit 7751c5ea6e
1 changed files with 26 additions and 26 deletions
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52
app/src/main/java/eu/faircode/email/EmailProvider.java
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@ -215,7 +215,32 @@ public class EmailProvider {
return provider;
}
EmailProvider autoconfig = _fromDomain(context, domain.toLowerCase(Locale.ROOT), email, discover);
EmailProvider autoconfig = null;
try {
autoconfig = _fromDomain(context, domain.toLowerCase(Locale.ROOT), email, discover);
} catch (Throwable ex) {
Log.w(ex);
// Retry at MX server addresses
Record[] records = lookupDNS(context, domain, Type.MX);
for (Record record : records) {
String target = ((MXRecord) record).getTarget().toString(true);
while (autoconfig == null && target != null && target.indexOf('.') > 0) {
try {
autoconfig = _fromDomain(context, target.toLowerCase(Locale.ROOT), email, discover);
} catch (Throwable ex1) {
Log.w(ex1);
int dot = target.indexOf('.');
target = target.substring(dot + 1);
}
}
if (autoconfig != null)
break;
}
if (autoconfig == null)
throw ex;
}
// Always prefer built-in profiles
// - ISPDB is not always correct
@ -263,31 +288,6 @@ public class EmailProvider {
@NonNull
private static EmailProvider fromISPDB(Context context, String domain, String email) throws IOException, XmlPullParserException {
try {
return _fromISPDB(context, domain, email);
} catch (Throwable ex) {
Log.w(ex);
Record[] records = lookupDNS(context, domain, Type.MX);
for (Record record : records) {
String target = ((MXRecord) record).getTarget().toString(true);
while (target != null && target.indexOf('.') > 0) {
try {
return _fromISPDB(context, target, email);
} catch (Throwable ex1) {
Log.w(ex1);
int dot = target.indexOf('.');
target = target.substring(dot + 1);
}
}
}
throw new UnknownHostException(domain);
}
}
@NonNull
private static EmailProvider _fromISPDB(Context context, String domain, String email) throws IOException, XmlPullParserException {
// https://wiki.mozilla.org/Thunderbird:Autoconfiguration
try {
URL url = new URL("https://autoconfig." + domain + "/mail/config-v1.1.xml?emailaddress=" + email);