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Added support for Disconnect's tracker protection lists
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117 changes: 117 additions & 0 deletions
117
app/src/main/java/eu/faircode/email/DisconnectBlacklist.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| package eu.faircode.email; | ||
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| /* | ||
| This file is part of FairEmail. | ||
| FairEmail is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| FairEmail is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with FairEmail. If not, see <http://www.gnu.org/licenses/>. | ||
| Copyright 2018-2020 by Marcel Bokhorst (M66B) | ||
| */ | ||
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| import android.content.Context; | ||
| import android.net.Uri; | ||
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| import org.json.JSONArray; | ||
| import org.json.JSONException; | ||
| import org.json.JSONObject; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.net.URL; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.ArrayList; | ||
| import java.util.Iterator; | ||
| import java.util.List; | ||
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| import javax.net.ssl.HttpsURLConnection; | ||
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| public class DisconnectBlacklist { | ||
| private final static int FETCH_TIMEOUT = 20 * 1000; // milliseconds | ||
| private final static String LIST = "https://raw.githubusercontent.com/mozilla-services/shavar-prod-lists/master/disconnect-blacklist.json"; | ||
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| static void download(Context context) throws IOException, JSONException { | ||
| File file = getFile(context); | ||
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| URL url = new URL(LIST); | ||
| Log.i("GET " + url); | ||
| HttpsURLConnection connection = (HttpsURLConnection) url.openConnection(); | ||
| connection.setRequestMethod("GET"); | ||
| connection.setReadTimeout(FETCH_TIMEOUT); | ||
| connection.setConnectTimeout(FETCH_TIMEOUT); | ||
| connection.connect(); | ||
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| try { | ||
| String response = Helper.readStream(connection.getInputStream(), StandardCharsets.UTF_8.name()); | ||
| Helper.writeText(file, response); | ||
| } finally { | ||
| connection.disconnect(); | ||
| } | ||
| } | ||
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| static List<String> getCategories(String domain, Context context) throws IOException, JSONException { | ||
| if (domain == null) | ||
| return null; | ||
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| File file = getFile(context); | ||
| if (!file.exists()) | ||
| return null; | ||
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| List<String> result = new ArrayList<>(); | ||
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| String json = Helper.readText(file); | ||
| JSONObject jdisconnect = new JSONObject(json); | ||
| JSONObject jcategories = (JSONObject) jdisconnect.get("categories"); | ||
| Iterator<String> categories = jcategories.keys(); | ||
| while (categories.hasNext()) { | ||
| String category = categories.next(); | ||
| JSONArray jcategory = jcategories.getJSONArray(category); | ||
| for (int c = 0; c < jcategory.length(); c++) { | ||
| JSONObject jblock = (JSONObject) jcategory.get(c); | ||
| Iterator<String> names = jblock.keys(); | ||
| if (names.hasNext()) { | ||
| String name = names.next(); | ||
| JSONObject jsites = (JSONObject) jblock.get(name); | ||
| Iterator<String> sites = jsites.keys(); | ||
| if (sites.hasNext()) { | ||
| List<String> domains = new ArrayList<>(); | ||
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| String site = sites.next(); | ||
| String host = Uri.parse(site).getHost(); | ||
| if (host != null) | ||
| domains.add(host); | ||
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| JSONArray jdomains = jsites.getJSONArray(site); | ||
| for (int d = 0; d < jdomains.length(); d++) | ||
| domains.add(jdomains.getString(d)); | ||
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| for (String d : domains) | ||
| if (domain.equalsIgnoreCase(d) && !result.contains(category)) | ||
| result.add(category); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| return (result.size() == 0 ? null : result); | ||
| } | ||
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| private static File getFile(Context context) { | ||
| return new File(context.getFilesDir(), "disconnect-blacklist.json"); | ||
| } | ||
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| static Long getTime(Context context) { | ||
| File file = getFile(context); | ||
| return (file.exists() ? file.lastModified() : null); | ||
| } | ||
| } |
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