package eu.faircode.netguard;
/*
This file is part of NetGuard.
NetGuard 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.
NetGuard 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 NetGuard. If not, see <http://www.gnu.org/licenses/>.
Copyright 2015-2017 by Marcel Bokhorst (M66B)
*/
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.XmlResourceParser;
import android.net.Uri;
import android.os.Build;
import android.os.Process;
import android.preference.PreferenceManager;
import android.provider.Settings;
import android.util.Log;
import org.xmlpull.v1.XmlPullParser;
import java.text.Collator;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
public class Rule {
private static final String TAG = "NetGuard.Rule";
public PackageInfo info;
public String name;
public String description;
public boolean system;
public boolean internet;
public boolean enabled;
public Intent launch;
public Intent settings;
public Intent datasaver;
public boolean pkg = true;
public boolean wifi_default = false;
public boolean other_default = false;
public boolean screen_wifi_default = false;
public boolean screen_other_default = false;
public boolean roaming_default = false;
public boolean wifi_blocked = false;
public boolean other_blocked = false;
public boolean screen_wifi = false;
public boolean screen_other = false;
public boolean roaming = false;
public boolean lockdown = false;
public boolean apply = true;
public boolean notify = true;
public boolean relateduids = false;
public String[] related = null;
public long hosts;
public boolean changed;
public boolean expanded = false;
private static List<PackageInfo> cachePackageInfo = null;
private static Map<PackageInfo, String> cacheLabel = new HashMap<>();
private static Map<PackageInfo, String> cacheDescription = new HashMap<>();
private static Map<String, Boolean> cacheSystem = new HashMap<>();
private static Map<String, Boolean> cacheInternet = new HashMap<>();
private static Map<PackageInfo, Boolean> cacheEnabled = new HashMap<>();
private static Map<String, Intent> cacheIntentLaunch = new HashMap<>();
private static Map<String, Intent> cacheIntentSettings = new HashMap<>();
private static Map<String, Intent> cacheIntentDatasaver = new HashMap<>();
private static Map<Integer, String[]> cachePackages = new HashMap<>();
private static List<PackageInfo> getPackages(Context context) {
synchronized (context.getApplicationContext()) {
if (cachePackageInfo == null) {
PackageManager pm = context.getPackageManager();
cachePackageInfo = pm.getInstalledPackages(0);
}
return new ArrayList<>(cachePackageInfo);
}
}
private static String getLabel(PackageInfo info, Context context) {
synchronized (context.getApplicationContext()) {
if (!cacheLabel.containsKey(info)) {
PackageManager pm = context.getPackageManager();
cacheLabel.put(info, info.applicationInfo.loadLabel(pm).toString());
}
return cacheLabel.get(info);
}
}
private static String getDescription(PackageInfo info, Context context) {
synchronized (context.getApplicationContext()) {
if (!cacheDescription.containsKey(info)) {
PackageManager pm = context.getPackageManager();
CharSequence description = info.applicationInfo.loadDescription(pm);
cacheDescription.put(info, description == null ? null : description.toString());
}
return cacheDescription.get(info);
}
}
private static boolean isSystem(String packageName, Context context) {
synchronized (context.getApplicationContext()) {
if (!cacheSystem.containsKey(packageName))
cacheSystem.put(packageName, Util.isSystem(packageName, context));
return cacheSystem.get(packageName);
}
}
private static boolean hasInternet(String packageName, Context context) {
synchronized (context.getApplicationContext()) {
if (!cacheInternet.containsKey(packageName))
cacheInternet.put(packageName, Util.hasInternet(packageName, context));
return cacheInternet.get(packageName);
}
}
private static boolean isEnabled(PackageInfo info, Context context) {
synchronized (context.getApplicationContext()) {
if (!cacheEnabled.containsKey(info))
cacheEnabled.put(info, Util.isEnabled(info, context));
return cacheEnabled.get(info);
}
}
private static Intent getIntentLaunch(String packageName, Context context) {
synchronized (context.getApplicationContext()) {
if (!cacheIntentLaunch.containsKey(packageName))
cacheIntentLaunch.put(packageName, context.getPackageManager().getLaunchIntentForPackage(packageName));
return cacheIntentLaunch.get(packageName);
}
}
private static Intent getIntentSettings(String packageName, Context context) {
synchronized (context.getApplicationContext()) {
if (!cacheIntentSettings.containsKey(packageName)) {
Intent intent = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.setData(Uri.parse("package:" + packageName));
if (intent.resolveActivity(context.getPackageManager()) == null)
intent = null;
cacheIntentSettings.put(packageName, intent);
}
return cacheIntentSettings.get(packageName);
}
}
private static Intent getIntentDatasaver(String packageName, Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
synchronized (context.getApplicationContext()) {
if (!cacheIntentDatasaver.containsKey(packageName)) {
Intent intent = new Intent(
Settings.ACTION_IGNORE_BACKGROUND_DATA_RESTRICTIONS_SETTINGS,
Uri.parse("package:" + packageName));
if (intent.resolveActivity(context.getPackageManager()) == null)
intent = null;
cacheIntentDatasaver.put(packageName, intent);
}
return cacheIntentDatasaver.get(packageName);
}
else
return null;
}
private static String[] getPackages(int uid, Context context) {
synchronized (context.getApplicationContext()) {
if (!cachePackages.containsKey(uid))
cachePackages.put(uid, context.getPackageManager().getPackagesForUid(uid));
return cachePackages.get(uid);
}
}
public static void clearCache(Context context) {
Log.i(TAG, "Clearing cache");
synchronized (context.getApplicationContext()) {
cachePackageInfo = null;
cacheLabel.clear();
cacheDescription.clear();
cacheSystem.clear();
cacheInternet.clear();
cacheEnabled.clear();
cacheIntentLaunch.clear();
cacheIntentSettings.clear();
cacheIntentDatasaver.clear();
cachePackages.clear();
}
}
private Rule(PackageInfo info, Context context) {
this.info = info;
if (info.applicationInfo.uid == 0) {
this.name = context.getString(R.string.title_root);
this.description = null;
this.system = true;
this.internet = true;
this.enabled = true;
this.launch = null;
this.settings = null;
this.datasaver = null;
this.pkg = false;
} else if (info.applicationInfo.uid == 1013) {
this.name = context.getString(R.string.title_mediaserver);
this.description = null;
this.system = true;
this.internet = true;
this.enabled = true;
this.launch = null;
this.settings = null;
this.datasaver = null;
this.pkg = false;
} else if (info.applicationInfo.uid == 9999) {
this.name = context.getString(R.string.title_nobody);
this.description = null;
this.system = true;
this.internet = true;
this.enabled = true;
this.launch = null;
this.settings = null;
this.datasaver = null;
this.pkg = false;
} else {
this.name = getLabel(info, context);
this.description = getDescription(info, context);
this.system = isSystem(info.packageName, context);
this.internet = hasInternet(info.packageName, context);
this.enabled = isEnabled(info, context);
this.launch = getIntentLaunch(info.packageName, context);
this.settings = getIntentSettings(info.packageName, context);
this.datasaver = getIntentDatasaver(info.packageName, context);
}
}
public static List<Rule> getRules(final boolean all, Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
SharedPreferences wifi = context.getSharedPreferences("wifi", Context.MODE_PRIVATE);
SharedPreferences other = context.getSharedPreferences("other", Context.MODE_PRIVATE);
SharedPreferences screen_wifi = context.getSharedPreferences("screen_wifi", Context.MODE_PRIVATE);
SharedPreferences screen_other = context.getSharedPreferences("screen_other", Context.MODE_PRIVATE);
SharedPreferences roaming = context.getSharedPreferences("roaming", Context.MODE_PRIVATE);
SharedPreferences lockdown = context.getSharedPreferences("lockdown", Context.MODE_PRIVATE);
SharedPreferences apply = context.getSharedPreferences("apply", Context.MODE_PRIVATE);
SharedPreferences notify = context.getSharedPreferences("notify", Context.MODE_PRIVATE);
// Get settings
boolean default_wifi = prefs.getBoolean("whitelist_wifi", true);
boolean default_other = prefs.getBoolean("whitelist_other", true);
boolean default_screen_wifi = prefs.getBoolean("screen_wifi", false);
boolean default_screen_other = prefs.getBoolean("screen_other", false);
boolean default_roaming = prefs.getBoolean("whitelist_roaming", true);
boolean manage_system = prefs.getBoolean("manage_system", false);
boolean screen_on = prefs.getBoolean("screen_on", true);
boolean show_user = prefs.getBoolean("show_user", true);
boolean show_system = prefs.getBoolean("show_system", false);
boolean show_nointernet = prefs.getBoolean("show_nointernet", true);
boolean show_disabled = prefs.getBoolean("show_disabled", true);
default_screen_wifi = default_screen_wifi && screen_on;
default_screen_other = default_screen_other && screen_on;
// Get predefined rules
Map<String, Boolean> pre_wifi_blocked = new HashMap<>();
Map<String, Boolean> pre_other_blocked = new HashMap<>();
Map<String, Boolean> pre_roaming = new HashMap<>();
Map<String, String[]> pre_related = new HashMap<>();
Map<String, Boolean> pre_system = new HashMap<>();
try {
XmlResourceParser xml = context.getResources().getXml(R.xml.predefined);
int eventType = xml.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
if (eventType == XmlPullParser.START_TAG)
if ("wifi".equals(xml.getName())) {
String pkg = xml.getAttributeValue(null, "package");
boolean pblocked = xml.getAttributeBooleanValue(null, "blocked", false);
pre_wifi_blocked.put(pkg, pblocked);
} else if ("other".equals(xml.getName())) {
String pkg = xml.getAttributeValue(null, "package");
boolean pblocked = xml.getAttributeBooleanValue(null, "blocked", false);
boolean proaming = xml.getAttributeBooleanValue(null, "roaming", default_roaming);
pre_other_blocked.put(pkg, pblocked);
pre_roaming.put(pkg, proaming);
} else if ("relation".equals(xml.getName())) {
String pkg = xml.getAttributeValue(null, "package");
String[] rel = xml.getAttributeValue(null, "related").split(",");
pre_related.put(pkg, rel);
} else if ("type".equals(xml.getName())) {
String pkg = xml.getAttributeValue(null, "package");
boolean system = xml.getAttributeBooleanValue(null, "system", true);
pre_system.put(pkg, system);
}
eventType = xml.next();
}
} catch (Throwable ex) {
Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
}
// Build rule list
List<Rule> listRules = new ArrayList<>();
List<PackageInfo> listPI = getPackages(context);
// Add root
PackageInfo root = new PackageInfo();
root.packageName = "root";
root.versionCode = Build.VERSION.SDK_INT;
root.versionName = Build.VERSION.RELEASE;
root.applicationInfo = new ApplicationInfo();
root.applicationInfo.uid = 0;
root.applicationInfo.icon = 0;
listPI.add(root);
// Add mediaserver
PackageInfo media = new PackageInfo();
media.packageName = "android.media";
media.versionCode = Build.VERSION.SDK_INT;
media.versionName = Build.VERSION.RELEASE;
media.applicationInfo = new ApplicationInfo();
media.applicationInfo.uid = 1013;
media.applicationInfo.icon = 0;
listPI.add(media);
// Add nobody
PackageInfo nobody = new PackageInfo();
nobody.packageName = "nobody";
nobody.versionCode = Build.VERSION.SDK_INT;
nobody.versionName = Build.VERSION.RELEASE;
nobody.applicationInfo = new ApplicationInfo();
nobody.applicationInfo.uid = 9999;
nobody.applicationInfo.icon = 0;
listPI.add(nobody);
DatabaseHelper dh = DatabaseHelper.getInstance(context);
for (PackageInfo info : listPI)
try {
Rule rule = new Rule(info, context);
if (pre_system.containsKey(info.packageName))
rule.system = pre_system.get(info.packageName);
if (info.applicationInfo.uid == Process.myUid())
rule.system = true;
if (all ||
((rule.system ? show_system : show_user) &&
(show_nointernet || rule.internet) &&
(show_disabled || rule.enabled))) {
rule.wifi_default = (pre_wifi_blocked.containsKey(info.packageName) ? pre_wifi_blocked.get(info.packageName) : default_wifi);
rule.other_default = (pre_other_blocked.containsKey(info.packageName) ? pre_other_blocked.get(info.packageName) : default_other);
rule.screen_wifi_default = default_screen_wifi;
rule.screen_other_default = default_screen_other;
rule.roaming_default = (pre_roaming.containsKey(info.packageName) ? pre_roaming.get(info.packageName) : default_roaming);
rule.wifi_blocked = (!(rule.system && !manage_system) && wifi.getBoolean(info.packageName, rule.wifi_default));
rule.other_blocked = (!(rule.system && !manage_system) && other.getBoolean(info.packageName, rule.other_default));
rule.screen_wifi = screen_wifi.getBoolean(info.packageName, rule.screen_wifi_default) && screen_on;
rule.screen_other = screen_other.getBoolean(info.packageName, rule.screen_other_default) && screen_on;
rule.roaming = roaming.getBoolean(info.packageName, rule.roaming_default);
rule.lockdown = lockdown.getBoolean(info.packageName, false);
rule.apply = apply.getBoolean(info.packageName, true);
rule.notify = notify.getBoolean(info.packageName, true);
// Related packages
List<String> listPkg = new ArrayList<>();
if (pre_related.containsKey(info.packageName))
listPkg.addAll(Arrays.asList(pre_related.get(info.packageName)));
String[] pkgs = getPackages(info.applicationInfo.uid, context);
if (pkgs != null && pkgs.length > 1) {
rule.relateduids = true;
listPkg.addAll(Arrays.asList(pkgs));
listPkg.remove(info.packageName);
}
rule.related = listPkg.toArray(new String[0]);
rule.hosts = dh.getHostCount(rule.info.applicationInfo.uid, true);
rule.updateChanged(default_wifi, default_other, default_roaming);
listRules.add(rule);
}
} catch (Throwable ex) {
Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
}
final Collator collator = Collator.getInstance(Locale.getDefault());
collator.setStrength(Collator.SECONDARY); // Case insensitive, process accents etc
// Sort rule list
String sort = prefs.getString("sort", "name");
if ("uid".equals(sort))
Collections.sort(listRules, new Comparator<Rule>() {
@Override
public int compare(Rule rule, Rule other) {
if (rule.info.applicationInfo.uid < other.info.applicationInfo.uid)
return -1;
else if (rule.info.applicationInfo.uid > other.info.applicationInfo.uid)
return 1;
else {
int i = collator.compare(rule.name, other.name);
return (i == 0 ? rule.info.packageName.compareTo(other.info.packageName) : i);
}
}
});
else
Collections.sort(listRules, new Comparator<Rule>() {
@Override
public int compare(Rule rule, Rule other) {
if (all || rule.changed == other.changed) {
int i = collator.compare(rule.name, other.name);
return (i == 0 ? rule.info.packageName.compareTo(other.info.packageName) : i);
}
return (rule.changed ? -1 : 1);
}
});
return listRules;
}
private void updateChanged(boolean default_wifi, boolean default_other, boolean default_roaming) {
changed = (wifi_blocked != default_wifi ||
(other_blocked != default_other) ||
(wifi_blocked && screen_wifi != screen_wifi_default) ||
(other_blocked && screen_other != screen_other_default) ||
((!other_blocked || screen_other) && roaming != default_roaming) ||
hosts > 0 || lockdown || !apply);
}
public void updateChanged(Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
boolean screen_on = prefs.getBoolean("screen_on", false);
boolean default_wifi = prefs.getBoolean("whitelist_wifi", true) && screen_on;
boolean default_other = prefs.getBoolean("whitelist_other", true) && screen_on;
boolean default_roaming = prefs.getBoolean("whitelist_roaming", true);
updateChanged(default_wifi, default_other, default_roaming);
}
@Override
public String toString() {
// This is used in the port forwarding dialog application selector
return this.name;
}
}