msb-public
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FairEmail
mirror of https://github.com/M66B/FairEmail.git
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Added mini port scanner

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pull/159/head
M66B 6 years ago
parent 102be15f79
commit b5f0729de3
1 changed files with 82 additions and 50 deletions
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132
app/src/main/java/eu/faircode/email/EmailProvider.java
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@ -46,6 +46,11 @@ import java.util.Collections;
import java.util.Comparator; import java.util.Comparator;
import java.util.List; import java.util.List;
import java.util.Locale; import java.util.Locale;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
public class EmailProvider { public class EmailProvider {
public String name; public String name;
@ -372,60 +377,87 @@ public class EmailProvider {
return provider; return provider;
} }
private static EmailProvider fromTemplate(Context context, String domain) throws UnknownHostException { private static final ExecutorService executor = Executors.newCachedThreadPool();
EmailProvider provider;
private static class Server {
provider = checkTemplate(domain, null, 993, null, 587); String host;
if (provider != null) int port;
return provider; Future<Boolean> reachable;
provider = checkTemplate(domain, "imap", 993, "smtp", 587); Server(String domain, String prefix, int port) {
if (provider != null) this.host = (prefix == null ? "" : prefix + ".") + domain;
return provider; this.port = port;
provider = checkTemplate(domain, "mail", 993, "mail", 587); Log.i("Scanning " + host + ":" + port);
if (provider != null) this.reachable = executor.submit(new Callable<Boolean>() {
return provider; @Override
public Boolean call() {
try (Socket socket = new Socket()) {
InetAddress iaddr = InetAddress.getByName(host);
InetSocketAddress inetSocketAddress = new InetSocketAddress(iaddr, Server.this.port);
socket.connect(inetSocketAddress, DNS_TIMEOUT);
Log.i("Reachable " + Server.this);
return true;
} catch (IOException ex) {
Log.i("Unreachable " + Server.this + ": " + Helper.formatThrowable(ex));
return false;
}
}
});
}
throw new UnknownHostException(domain + " template"); @Override
public String toString() {
return host + ":" + port;
}
} }
private static EmailProvider checkTemplate( private static EmailProvider fromTemplate(Context context, String domain)
String domain, throws ExecutionException, InterruptedException, UnknownHostException {
String imap_prefix, int imap_port, List<Server> imaps = new ArrayList<>();
String smtp_prefix, int smtp_port) { List<Server> smtps = new ArrayList<>();
String imap_host = (imap_prefix == null ? "" : imap_prefix + ".") + domain;
String smtp_host = (smtp_prefix == null ? "" : smtp_prefix + ".") + domain; // SSL
imaps.add(new Server(domain, null, 993));
if (isHostReachable(imap_host, imap_port, DNS_TIMEOUT) && imaps.add(new Server(domain, "imap", 993));
isHostReachable(smtp_host, smtp_port, DNS_TIMEOUT)) { imaps.add(new Server(domain, "mail", 993));
EmailProvider provider = new EmailProvider(); imaps.add(new Server(domain, "mx", 993));
provider.name = domain; // STARTTLS
imaps.add(new Server(domain, null, 143));
provider.imap_host = imap_host; imaps.add(new Server(domain, "imap", 143));
provider.imap_port = imap_port; imaps.add(new Server(domain, "mail", 143));
provider.imap_starttls = (imap_port == 143); imaps.add(new Server(domain, "mx", 143));
provider.smtp_host = smtp_host; // SSL
provider.smtp_port = smtp_port; smtps.add(new Server(domain, null, 465));
provider.smtp_starttls = (smtp_port == 587); smtps.add(new Server(domain, "smtp", 465));
smtps.add(new Server(domain, "mail", 465));
return provider; smtps.add(new Server(domain, "mx", 465));
} else // STARTTLS
return null; smtps.add(new Server(domain, null, 587));
} smtps.add(new Server(domain, "smtp", 587));
smtps.add(new Server(domain, "mail", 587));
smtps.add(new Server(domain, "mx", 587));
for (Server imap : imaps)
if (imap.reachable.get())
for (Server smtp : smtps)
if (smtp.reachable.get()) {
EmailProvider provider = new EmailProvider();
provider.name = domain;
provider.imap_host = imap.host;
provider.imap_port = imap.port;
provider.imap_starttls = (imap.port == 143);
provider.smtp_host = smtp.host;
provider.smtp_port = smtp.port;
provider.smtp_starttls = (smtp.port == 587);
return provider;
}
private static boolean isHostReachable(String host, int port, int timeoutms) { throw new UnknownHostException(domain + " template");
Log.i("Checking reachable " + host + ":" + port);
try (Socket socket = new Socket()) {
InetAddress iaddr = InetAddress.getByName(host);
InetSocketAddress inetSocketAddress = new InetSocketAddress(iaddr, port);
socket.connect(inetSocketAddress, timeoutms);
return true;
} catch (IOException ex) {
Log.w(ex);
return false;
}
} }
private static void addDocumentation(EmailProvider provider, String href, String title) { private static void addDocumentation(EmailProvider provider, String href, String title) {

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