mirror of https://github.com/M66B/FairEmail.git
85 lines
3.2 KiB
Java
85 lines
3.2 KiB
Java
package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2020 by Marcel Bokhorst (M66B)
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*/
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import android.content.Context;
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import android.net.MailTo;
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import android.net.ParseException;
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import android.net.Uri;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.net.InetAddress;
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import java.net.URL;
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import java.net.UnknownHostException;
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import java.util.HashMap;
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import java.util.Map;
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import javax.net.ssl.HttpsURLConnection;
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public class IPInfo {
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private static Map<InetAddress, String> hostOrganization = new HashMap<>();
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private final static int FETCH_TIMEOUT = 15 * 1000; // milliseconds
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static String[] getOrganization(Uri uri, Context context) throws IOException, ParseException {
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if ("mailto".equals(uri.getScheme())) {
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MailTo email = MailTo.parse(uri.toString());
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String to = email.getTo();
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if (to == null || !to.contains("@"))
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throw new UnknownHostException();
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String domain = to.substring(to.indexOf('@') + 1);
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InetAddress address = ConnectionHelper.lookupMx(domain, context);
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if (address == null)
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throw new UnknownHostException();
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return new String[]{domain, getOrganization(address)};
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} else {
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String host = uri.getHost();
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if (host == null)
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throw new UnknownHostException();
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InetAddress address = InetAddress.getByName(host);
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return new String[]{host, getOrganization(address)};
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}
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}
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private static String getOrganization(InetAddress address) throws IOException {
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synchronized (hostOrganization) {
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if (hostOrganization.containsKey(address))
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return hostOrganization.get(address);
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}
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URL url = new URL("https://ipinfo.io/" + address.getHostAddress() + "/org");
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Log.i("GET " + url);
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HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
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connection.setRequestMethod("GET");
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connection.setReadTimeout(FETCH_TIMEOUT);
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connection.connect();
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try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
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String organization = reader.readLine();
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if ("undefined".equals(organization))
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organization = null;
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synchronized (hostOrganization) {
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hostOrganization.put(address, organization);
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}
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return organization;
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}
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}
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}
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