mirror of https://github.com/M66B/NetGuard.git
454 lines
20 KiB
Java
454 lines
20 KiB
Java
package eu.faircode.netguard;
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/*
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This file is part of NetGuard.
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NetGuard 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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NetGuard 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 NetGuard. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2015-2019 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.content.pm.ApplicationInfo;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.content.res.XmlResourceParser;
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import android.database.Cursor;
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import android.os.Build;
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import android.os.Process;
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import android.util.Log;
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import androidx.preference.PreferenceManager;
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import org.xmlpull.v1.XmlPullParser;
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import java.text.Collator;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.HashMap;
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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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public class Rule {
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private static final String TAG = "NetGuard.Rule";
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public int uid;
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public String packageName;
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public int icon;
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public String name;
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public String version;
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public boolean system;
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public boolean internet;
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public boolean enabled;
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public boolean pkg = true;
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public boolean wifi_default = false;
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public boolean other_default = false;
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public boolean screen_wifi_default = false;
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public boolean screen_other_default = false;
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public boolean roaming_default = false;
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public boolean wifi_blocked = false;
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public boolean other_blocked = false;
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public boolean screen_wifi = false;
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public boolean screen_other = false;
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public boolean roaming = false;
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public boolean lockdown = false;
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public boolean apply = true;
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public boolean notify = true;
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public boolean relateduids = false;
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public String[] related = null;
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public long hosts;
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public boolean changed;
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public boolean expanded = false;
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private static List<PackageInfo> cachePackageInfo = null;
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private static Map<PackageInfo, String> cacheLabel = new HashMap<>();
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private static Map<String, Boolean> cacheSystem = new HashMap<>();
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private static Map<String, Boolean> cacheInternet = new HashMap<>();
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private static Map<PackageInfo, Boolean> cacheEnabled = new HashMap<>();
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private static List<PackageInfo> getPackages(Context context) {
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if (cachePackageInfo == null) {
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PackageManager pm = context.getPackageManager();
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cachePackageInfo = pm.getInstalledPackages(0);
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}
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return new ArrayList<>(cachePackageInfo);
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}
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private static String getLabel(PackageInfo info, Context context) {
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if (!cacheLabel.containsKey(info)) {
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PackageManager pm = context.getPackageManager();
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cacheLabel.put(info, info.applicationInfo.loadLabel(pm).toString());
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}
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return cacheLabel.get(info);
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}
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private static boolean isSystem(String packageName, Context context) {
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if (!cacheSystem.containsKey(packageName))
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cacheSystem.put(packageName, Util.isSystem(packageName, context));
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return cacheSystem.get(packageName);
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}
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private static boolean hasInternet(String packageName, Context context) {
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if (!cacheInternet.containsKey(packageName))
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cacheInternet.put(packageName, Util.hasInternet(packageName, context));
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return cacheInternet.get(packageName);
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}
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private static boolean isEnabled(PackageInfo info, Context context) {
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if (!cacheEnabled.containsKey(info))
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cacheEnabled.put(info, Util.isEnabled(info, context));
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return cacheEnabled.get(info);
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}
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public static void clearCache(Context context) {
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Log.i(TAG, "Clearing cache");
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synchronized (context.getApplicationContext()) {
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cachePackageInfo = null;
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cacheLabel.clear();
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cacheSystem.clear();
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cacheInternet.clear();
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cacheEnabled.clear();
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}
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DatabaseHelper dh = DatabaseHelper.getInstance(context);
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dh.clearApps();
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}
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private Rule(DatabaseHelper dh, PackageInfo info, Context context) {
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this.uid = info.applicationInfo.uid;
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this.packageName = info.packageName;
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this.icon = info.applicationInfo.icon;
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this.version = info.versionName;
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if (info.applicationInfo.uid == 0) {
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this.name = context.getString(R.string.title_root);
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this.system = true;
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this.internet = true;
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this.enabled = true;
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this.pkg = false;
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} else if (info.applicationInfo.uid == 1013) {
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this.name = context.getString(R.string.title_mediaserver);
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this.system = true;
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this.internet = true;
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this.enabled = true;
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this.pkg = false;
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} else if (info.applicationInfo.uid == 1020) {
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this.name = "MulticastDNSResponder";
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this.system = true;
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this.internet = true;
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this.enabled = true;
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this.pkg = false;
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} else if (info.applicationInfo.uid == 1021) {
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this.name = context.getString(R.string.title_gpsdaemon);
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this.system = true;
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this.internet = true;
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this.enabled = true;
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this.pkg = false;
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} else if (info.applicationInfo.uid == 1051) {
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this.name = context.getString(R.string.title_dnsdaemon);
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this.system = true;
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this.internet = true;
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this.enabled = true;
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this.pkg = false;
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} else if (info.applicationInfo.uid == 9999) {
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this.name = context.getString(R.string.title_nobody);
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this.system = true;
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this.internet = true;
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this.enabled = true;
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this.pkg = false;
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} else {
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Cursor cursor = null;
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try {
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cursor = dh.getApp(this.packageName);
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if (cursor.moveToNext()) {
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this.name = cursor.getString(cursor.getColumnIndex("label"));
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this.system = cursor.getInt(cursor.getColumnIndex("system")) > 0;
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this.internet = cursor.getInt(cursor.getColumnIndex("internet")) > 0;
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this.enabled = cursor.getInt(cursor.getColumnIndex("enabled")) > 0;
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} else {
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this.name = getLabel(info, context);
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this.system = isSystem(info.packageName, context);
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this.internet = hasInternet(info.packageName, context);
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this.enabled = isEnabled(info, context);
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dh.addApp(this.packageName, this.name, this.system, this.internet, this.enabled);
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}
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} finally {
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if (cursor != null)
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cursor.close();
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}
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}
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}
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public static List<Rule> getRules(final boolean all, Context context) {
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synchronized (context.getApplicationContext()) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
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SharedPreferences wifi = context.getSharedPreferences("wifi", Context.MODE_PRIVATE);
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SharedPreferences other = context.getSharedPreferences("other", Context.MODE_PRIVATE);
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SharedPreferences screen_wifi = context.getSharedPreferences("screen_wifi", Context.MODE_PRIVATE);
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SharedPreferences screen_other = context.getSharedPreferences("screen_other", Context.MODE_PRIVATE);
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SharedPreferences roaming = context.getSharedPreferences("roaming", Context.MODE_PRIVATE);
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SharedPreferences lockdown = context.getSharedPreferences("lockdown", Context.MODE_PRIVATE);
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SharedPreferences apply = context.getSharedPreferences("apply", Context.MODE_PRIVATE);
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SharedPreferences notify = context.getSharedPreferences("notify", Context.MODE_PRIVATE);
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// Get settings
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boolean default_wifi = prefs.getBoolean("whitelist_wifi", true);
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boolean default_other = prefs.getBoolean("whitelist_other", true);
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boolean default_screen_wifi = prefs.getBoolean("screen_wifi", false);
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boolean default_screen_other = prefs.getBoolean("screen_other", false);
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boolean default_roaming = prefs.getBoolean("whitelist_roaming", true);
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boolean manage_system = prefs.getBoolean("manage_system", false);
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boolean screen_on = prefs.getBoolean("screen_on", true);
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boolean show_user = prefs.getBoolean("show_user", true);
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boolean show_system = prefs.getBoolean("show_system", false);
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boolean show_nointernet = prefs.getBoolean("show_nointernet", true);
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boolean show_disabled = prefs.getBoolean("show_disabled", true);
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default_screen_wifi = default_screen_wifi && screen_on;
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default_screen_other = default_screen_other && screen_on;
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// Get predefined rules
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Map<String, Boolean> pre_wifi_blocked = new HashMap<>();
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Map<String, Boolean> pre_other_blocked = new HashMap<>();
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Map<String, Boolean> pre_roaming = new HashMap<>();
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Map<String, String[]> pre_related = new HashMap<>();
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Map<String, Boolean> pre_system = new HashMap<>();
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try {
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XmlResourceParser xml = context.getResources().getXml(R.xml.predefined);
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int eventType = xml.getEventType();
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while (eventType != XmlPullParser.END_DOCUMENT) {
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if (eventType == XmlPullParser.START_TAG)
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if ("wifi".equals(xml.getName())) {
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String pkg = xml.getAttributeValue(null, "package");
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boolean pblocked = xml.getAttributeBooleanValue(null, "blocked", false);
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pre_wifi_blocked.put(pkg, pblocked);
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} else if ("other".equals(xml.getName())) {
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String pkg = xml.getAttributeValue(null, "package");
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boolean pblocked = xml.getAttributeBooleanValue(null, "blocked", false);
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boolean proaming = xml.getAttributeBooleanValue(null, "roaming", default_roaming);
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pre_other_blocked.put(pkg, pblocked);
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pre_roaming.put(pkg, proaming);
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} else if ("relation".equals(xml.getName())) {
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String pkg = xml.getAttributeValue(null, "package");
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String[] rel = xml.getAttributeValue(null, "related").split(",");
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pre_related.put(pkg, rel);
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} else if ("type".equals(xml.getName())) {
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String pkg = xml.getAttributeValue(null, "package");
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boolean system = xml.getAttributeBooleanValue(null, "system", true);
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pre_system.put(pkg, system);
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}
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eventType = xml.next();
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}
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} catch (Throwable ex) {
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Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
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}
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// Build rule list
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List<Rule> listRules = new ArrayList<>();
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List<PackageInfo> listPI = getPackages(context);
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int userId = Process.myUid() / 100000;
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// Add root
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PackageInfo root = new PackageInfo();
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root.packageName = "root";
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root.versionCode = Build.VERSION.SDK_INT;
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root.versionName = Build.VERSION.RELEASE;
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root.applicationInfo = new ApplicationInfo();
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root.applicationInfo.uid = 0;
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root.applicationInfo.icon = 0;
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listPI.add(root);
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// Add mediaserver
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PackageInfo media = new PackageInfo();
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media.packageName = "android.media";
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media.versionCode = Build.VERSION.SDK_INT;
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media.versionName = Build.VERSION.RELEASE;
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media.applicationInfo = new ApplicationInfo();
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media.applicationInfo.uid = 1013 + userId * 100000;
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media.applicationInfo.icon = 0;
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listPI.add(media);
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// MulticastDNSResponder
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PackageInfo mdr = new PackageInfo();
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mdr.packageName = "android.multicast";
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mdr.versionCode = Build.VERSION.SDK_INT;
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mdr.versionName = Build.VERSION.RELEASE;
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mdr.applicationInfo = new ApplicationInfo();
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mdr.applicationInfo.uid = 1020 + userId * 100000;
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mdr.applicationInfo.icon = 0;
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listPI.add(mdr);
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// Add GPS daemon
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PackageInfo gps = new PackageInfo();
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gps.packageName = "android.gps";
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gps.versionCode = Build.VERSION.SDK_INT;
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gps.versionName = Build.VERSION.RELEASE;
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gps.applicationInfo = new ApplicationInfo();
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gps.applicationInfo.uid = 1021 + userId * 100000;
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gps.applicationInfo.icon = 0;
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listPI.add(gps);
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// Add DNS daemon
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PackageInfo dns = new PackageInfo();
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dns.packageName = "android.dns";
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dns.versionCode = Build.VERSION.SDK_INT;
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dns.versionName = Build.VERSION.RELEASE;
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dns.applicationInfo = new ApplicationInfo();
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dns.applicationInfo.uid = 1051 + userId * 100000;
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dns.applicationInfo.icon = 0;
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listPI.add(dns);
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// Add nobody
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PackageInfo nobody = new PackageInfo();
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nobody.packageName = "nobody";
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nobody.versionCode = Build.VERSION.SDK_INT;
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nobody.versionName = Build.VERSION.RELEASE;
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nobody.applicationInfo = new ApplicationInfo();
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nobody.applicationInfo.uid = 9999;
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nobody.applicationInfo.icon = 0;
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listPI.add(nobody);
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DatabaseHelper dh = DatabaseHelper.getInstance(context);
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for (PackageInfo info : listPI)
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try {
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// Skip self
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if (info.applicationInfo.uid == Process.myUid())
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continue;
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Rule rule = new Rule(dh, info, context);
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if (pre_system.containsKey(info.packageName))
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rule.system = pre_system.get(info.packageName);
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if (info.applicationInfo.uid == Process.myUid())
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rule.system = true;
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if (all ||
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((rule.system ? show_system : show_user) &&
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(show_nointernet || rule.internet) &&
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(show_disabled || rule.enabled))) {
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rule.wifi_default = (pre_wifi_blocked.containsKey(info.packageName) ? pre_wifi_blocked.get(info.packageName) : default_wifi);
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rule.other_default = (pre_other_blocked.containsKey(info.packageName) ? pre_other_blocked.get(info.packageName) : default_other);
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rule.screen_wifi_default = default_screen_wifi;
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rule.screen_other_default = default_screen_other;
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rule.roaming_default = (pre_roaming.containsKey(info.packageName) ? pre_roaming.get(info.packageName) : default_roaming);
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rule.wifi_blocked = (!(rule.system && !manage_system) && wifi.getBoolean(info.packageName, rule.wifi_default));
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rule.other_blocked = (!(rule.system && !manage_system) && other.getBoolean(info.packageName, rule.other_default));
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rule.screen_wifi = screen_wifi.getBoolean(info.packageName, rule.screen_wifi_default) && screen_on;
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rule.screen_other = screen_other.getBoolean(info.packageName, rule.screen_other_default) && screen_on;
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rule.roaming = roaming.getBoolean(info.packageName, rule.roaming_default);
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rule.lockdown = lockdown.getBoolean(info.packageName, false);
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rule.apply = apply.getBoolean(info.packageName, true);
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rule.notify = notify.getBoolean(info.packageName, true);
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// Related packages
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List<String> listPkg = new ArrayList<>();
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if (pre_related.containsKey(info.packageName))
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listPkg.addAll(Arrays.asList(pre_related.get(info.packageName)));
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for (PackageInfo pi : listPI)
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if (pi.applicationInfo.uid == rule.uid && !pi.packageName.equals(rule.packageName)) {
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rule.relateduids = true;
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listPkg.add(pi.packageName);
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}
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rule.related = listPkg.toArray(new String[0]);
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rule.hosts = dh.getHostCount(rule.uid, true);
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rule.updateChanged(default_wifi, default_other, default_roaming);
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listRules.add(rule);
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}
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} catch (Throwable ex) {
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Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
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}
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// Sort rule list
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final Collator collator = Collator.getInstance(Locale.getDefault());
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collator.setStrength(Collator.SECONDARY); // Case insensitive, process accents etc
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String sort = prefs.getString("sort", "name");
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if ("uid".equals(sort))
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Collections.sort(listRules, new Comparator<Rule>() {
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@Override
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public int compare(Rule rule, Rule other) {
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if (rule.uid < other.uid)
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return -1;
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else if (rule.uid > other.uid)
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return 1;
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else {
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int i = collator.compare(rule.name, other.name);
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return (i == 0 ? rule.packageName.compareTo(other.packageName) : i);
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}
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}
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});
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else
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Collections.sort(listRules, new Comparator<Rule>() {
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@Override
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public int compare(Rule rule, Rule other) {
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if (all || rule.changed == other.changed) {
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int i = collator.compare(rule.name, other.name);
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return (i == 0 ? rule.packageName.compareTo(other.packageName) : i);
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}
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return (rule.changed ? -1 : 1);
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}
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});
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return listRules;
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}
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}
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private void updateChanged(boolean default_wifi, boolean default_other, boolean default_roaming) {
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changed = (wifi_blocked != default_wifi ||
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(other_blocked != default_other) ||
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(wifi_blocked && screen_wifi != screen_wifi_default) ||
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(other_blocked && screen_other != screen_other_default) ||
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((!other_blocked || screen_other) && roaming != default_roaming) ||
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hosts > 0 || lockdown || !apply);
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}
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public void updateChanged(Context context) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
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boolean screen_on = prefs.getBoolean("screen_on", false);
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boolean default_wifi = prefs.getBoolean("whitelist_wifi", true) && screen_on;
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boolean default_other = prefs.getBoolean("whitelist_other", true) && screen_on;
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boolean default_roaming = prefs.getBoolean("whitelist_roaming", true);
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updateChanged(default_wifi, default_other, default_roaming);
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}
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@Override
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public String toString() {
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// This is used in the port forwarding dialog application selector
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return this.name;
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}
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}
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