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@ -19,16 +19,47 @@ package eu.faircode.email;
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Copyright 2018-2021 by Marcel Bokhorst (M66B)
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Copyright 2018-2021 by Marcel Bokhorst (M66B)
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*/
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*/
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import android.content.Context;
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import android.text.TextUtils;
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import java.io.BufferedReader;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.HashSet;
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import java.util.zip.ZipInputStream;
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public class UriHelper {
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public class UriHelper {
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static String getParentDomain(String host) {
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// https://publicsuffix.org/
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private static final HashSet<String> suffixList = new HashSet<>();
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private static final String SUFFIX_LIST_NAME = "effective_tld_names.dat.txt";
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static String getParentDomain(Context context, String host) {
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if (host == null)
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if (host == null)
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return null;
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return null;
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String[] h = host.split("\\.");
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ensureSuffixList(context);
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if (h.length >= 2)
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return h[h.length - 2] + "." + h[h.length - 1];
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String h = host;
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while (true) {
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int dot = h.indexOf('.');
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if (dot < 0)
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return host;
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String prefix = h.substring(0, dot);
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h = h.substring(dot + 1);
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return host;
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int d = h.indexOf('.');
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String w = (d < 0 ? null : '*' + h.substring(d));
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synchronized (suffixList) {
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if ((suffixList.contains(h) || suffixList.contains(w)) &&
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!suffixList.contains('!' + h)) {
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String parent = prefix + "." + h;
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Log.i("Host=" + host + " parent=" + parent);
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return parent;
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}
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}
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}
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}
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}
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static String getEmailUser(String address) {
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static String getEmailUser(String address) {
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@ -52,4 +83,28 @@ public class UriHelper {
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return null;
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return null;
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}
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}
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static void ensureSuffixList(Context context) {
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synchronized (suffixList) {
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if (suffixList.size() > 0)
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return;
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Log.i("Reading " + SUFFIX_LIST_NAME);
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try (InputStream is = context.getAssets().open(SUFFIX_LIST_NAME)) {
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BufferedReader br = new BufferedReader(new InputStreamReader((is)));
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String line;
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while ((line = br.readLine()) != null) {
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line = line.trim();
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if (TextUtils.isEmpty(line))
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continue;
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if (line.startsWith("//"))
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continue;
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suffixList.add(line);
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}
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Log.i(SUFFIX_LIST_NAME + "=" + suffixList.size());
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} catch (Throwable ex) {
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Log.e(ex);
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}
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}
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}
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}
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}
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