mirror of https://github.com/M66B/FairEmail.git
198 lines
7.1 KiB
Java
198 lines
7.1 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 2018-2024 by Marcel Bokhorst (M66B)
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*/
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.os.SystemClock;
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import androidx.preference.PreferenceManager;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.io.BufferedOutputStream;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.net.URL;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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import javax.net.ssl.HttpsURLConnection;
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public class DisconnectBlacklist {
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private static final Map<String, List<String>> map = new HashMap<>();
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private static final List<String> all = new ArrayList<>();
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private final static int FETCH_TIMEOUT = 20 * 1000; // milliseconds
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private final static String LIST = "https://raw.githubusercontent.com/disconnectme/disconnect-tracking-protection/master/services.json";
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final static String URI_CATEGORIES = "https://disconnect.me/trackerprotection#categories-of-trackers";
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static void init(Context context) {
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final File file = getFile(context);
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Helper.getSerialExecutor().submit(new Runnable() {
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@Override
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public void run() {
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try {
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if (file.exists())
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init(file);
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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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private static void init(File file) throws IOException, JSONException {
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synchronized (map) {
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long start = SystemClock.elapsedRealtime();
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map.clear();
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all.clear();
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String json = Helper.readText(file);
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JSONObject jdisconnect = new JSONObject(json);
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JSONObject jcategories = (JSONObject) jdisconnect.get("categories");
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Iterator<String> categories = jcategories.keys();
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while (categories.hasNext()) {
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String category = categories.next();
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all.add(category);
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JSONArray jcategory = jcategories.getJSONArray(category);
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for (int c = 0; c < jcategory.length(); c++) {
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JSONObject jblock = (JSONObject) jcategory.get(c);
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Iterator<String> names = jblock.keys();
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if (names.hasNext()) {
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String name = names.next();
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JSONObject jsites = (JSONObject) jblock.get(name);
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Iterator<String> sites = jsites.keys();
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if (sites.hasNext()) {
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String site = sites.next();
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JSONArray jdomains = jsites.getJSONArray(site);
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for (int d = 0; d < jdomains.length(); d++) {
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String domain = jdomains.getString(d).toLowerCase(Locale.ROOT);
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if (!map.containsKey(domain))
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map.put(domain, new ArrayList<>());
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List<String> list = map.get(domain);
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if (!list.contains(category))
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list.add(category);
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}
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}
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}
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}
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}
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long elapsed = SystemClock.elapsedRealtime() - start;
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Log.i("Disconnect domains=" + map.size() + " elapsed=" + elapsed + " ms");
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}
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}
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static void download(Context context) throws IOException, JSONException {
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File file = getFile(context);
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URL url = new URL(LIST);
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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.setConnectTimeout(FETCH_TIMEOUT);
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ConnectionHelper.setUserAgent(context, connection);
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connection.connect();
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try {
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int status = connection.getResponseCode();
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if (status != HttpsURLConnection.HTTP_OK)
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throw new FileNotFoundException("Error " + status + ": " + connection.getResponseMessage());
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try (OutputStream os = new BufferedOutputStream(new FileOutputStream(file))) {
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Helper.copy(connection.getInputStream(), os);
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}
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
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prefs.edit().putLong("disconnect_last", new Date().getTime()).apply();
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} finally {
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connection.disconnect();
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}
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init(file);
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}
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static List<String> getCategories() {
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synchronized (all) {
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return new ArrayList<>(all);
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}
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}
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static boolean isEnabled(Context context, String category) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
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return prefs.getBoolean("disconnect_" + category, !"Content".equals(category));
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}
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static void setEnabled(Context context, String category, boolean value) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
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prefs.edit().putBoolean("disconnect_" + category, value).apply();
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}
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static List<String> getCategories(String domain) {
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return _getCategories(domain);
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}
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static boolean isTrackingImage(Context context, String host) {
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List<String> categories = _getCategories(host);
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if (categories == null || categories.size() == 0)
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return false;
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for (String category : categories)
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if (isEnabled(context, category))
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return true;
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return false;
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}
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private static List<String> _getCategories(String domain) {
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if (domain == null)
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return null;
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synchronized (map) {
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String d = domain.toLowerCase(Locale.ROOT);
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while (d.contains(".")) {
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List<String> result = map.get(d);
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if (result != null)
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return result;
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int dot = d.indexOf(".");
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d = d.substring(dot + 1);
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}
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}
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return null;
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}
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private static File getFile(Context context) {
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return new File(context.getFilesDir(), "disconnect-blacklist.json");
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}
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}
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