Java tutorial
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.Manifest; import android.annotation.TargetApi; import android.app.Activity; import android.app.ActivityManager; import android.app.ApplicationErrorReport; import android.content.Context; import android.content.DialogInterface; 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.Resources; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.ConnectivityManager; import android.net.LinkProperties; import android.net.Network; import android.net.NetworkInfo; import android.net.Uri; import android.net.VpnService; import android.net.wifi.WifiManager; import android.os.AsyncTask; import android.os.Build; import android.os.Bundle; import android.os.PowerManager; import android.preference.PreferenceManager; import android.support.v4.net.ConnectivityManagerCompat; import android.support.v7.app.AlertDialog; import android.telephony.TelephonyManager; import android.text.TextUtils; import android.util.Log; import android.util.TypedValue; import android.view.LayoutInflater; import android.view.View; import android.widget.TextView; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GoogleApiAvailability; import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.PrintWriter; import java.io.StringWriter; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.InetAddress; import java.net.InterfaceAddress; import java.net.NetworkInterface; import java.net.URL; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.Enumeration; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; public class Util { private static final String TAG = "NetGuard.Util"; // Roam like at home private static final List<String> listEU = Arrays.asList("AT", // Austria "BE", // Belgium "BG", // Bulgaria "HR", // Croatia "CY", // Cyprus "CZ", // Czech Republic "DK", // Denmark "EE", // Estonia "FI", // Finland "FR", // France "DE", // Germany "GR", // Greece "HU", // Hungary "IS", // Iceland "IE", // Ireland "IT", // Italy "LV", // Latvia "LI", // Liechtenstein "LT", // Lithuania "LU", // Luxembourg "MT", // Malta "NL", // Netherlands "NO", // Norway "PL", // Poland "PT", // Portugal "RO", // Romania "SK", // Slovakia "SI", // Slovenia "ES", // Spain "SE", // Sweden "GB" // United Kingdom ); private static native String jni_getprop(String name); private static native boolean is_numeric_address(String ip); static { try { System.loadLibrary("netguard"); } catch (UnsatisfiedLinkError ignored) { System.exit(1); } } public static String getSelfVersionName(Context context) { try { PackageInfo pInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0); return pInfo.versionName; } catch (PackageManager.NameNotFoundException ex) { return ex.toString(); } } public static int getSelfVersionCode(Context context) { try { PackageInfo pInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0); return pInfo.versionCode; } catch (PackageManager.NameNotFoundException ex) { return -1; } } public static boolean isNetworkActive(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); return (cm == null ? false : cm.getActiveNetworkInfo() != null); } public static boolean isConnected(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo ni = (cm == null ? null : cm.getActiveNetworkInfo()); return (ni != null && ni.isConnected()); } public static boolean isWifiActive(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo ni = (cm == null ? null : cm.getActiveNetworkInfo()); return (ni != null && ni.getType() == ConnectivityManager.TYPE_WIFI); } public static boolean isMeteredNetwork(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); return (cm != null && ConnectivityManagerCompat.isActiveNetworkMetered(cm)); } public static String getWifiSSID(Context context) { WifiManager wm = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE); String ssid = (wm == null ? null : wm.getConnectionInfo().getSSID()); return (ssid == null ? "NULL" : ssid); } public static int getNetworkType(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo ni = (cm == null ? null : cm.getActiveNetworkInfo()); return (ni == null ? TelephonyManager.NETWORK_TYPE_UNKNOWN : ni.getSubtype()); } public static String getNetworkGeneration(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo ni = cm.getActiveNetworkInfo(); return (ni != null && ni.getType() == ConnectivityManager.TYPE_MOBILE ? getNetworkGeneration(ni.getSubtype()) : null); } public static boolean isRoaming(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo ni = (cm == null ? null : cm.getActiveNetworkInfo()); return (ni != null && ni.isRoaming()); } public static boolean isNational(Context context) { try { TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); return (tm != null && tm.getSimCountryIso() != null && tm.getSimCountryIso().equals(tm.getNetworkCountryIso())); } catch (Throwable ignored) { return false; } } public static boolean isEU(Context context) { try { TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); return (tm != null && isEU(tm.getSimCountryIso()) && isEU(tm.getNetworkCountryIso())); } catch (Throwable ignored) { return false; } } public static boolean isEU(String country) { return (country != null && listEU.contains(country.toUpperCase())); } public static String getNetworkGeneration(int networkType) { switch (networkType) { case TelephonyManager.NETWORK_TYPE_1xRTT: case TelephonyManager.NETWORK_TYPE_CDMA: case TelephonyManager.NETWORK_TYPE_EDGE: case TelephonyManager.NETWORK_TYPE_GPRS: case TelephonyManager.NETWORK_TYPE_IDEN: case TelephonyManager.NETWORK_TYPE_GSM: return "2G"; case TelephonyManager.NETWORK_TYPE_EHRPD: case TelephonyManager.NETWORK_TYPE_EVDO_0: case TelephonyManager.NETWORK_TYPE_EVDO_A: case TelephonyManager.NETWORK_TYPE_EVDO_B: case TelephonyManager.NETWORK_TYPE_HSDPA: case TelephonyManager.NETWORK_TYPE_HSPA: case TelephonyManager.NETWORK_TYPE_HSPAP: case TelephonyManager.NETWORK_TYPE_HSUPA: case TelephonyManager.NETWORK_TYPE_UMTS: case TelephonyManager.NETWORK_TYPE_TD_SCDMA: return "3G"; case TelephonyManager.NETWORK_TYPE_LTE: case TelephonyManager.NETWORK_TYPE_IWLAN: return "4G"; default: return "?G"; } } public static boolean hasPhoneStatePermission(Context context) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) return (context.checkSelfPermission( Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED); else return true; } public static List<String> getDefaultDNS(Context context) { String dns1 = null; String dns2 = null; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); Network an = cm.getActiveNetwork(); if (an != null) { LinkProperties lp = cm.getLinkProperties(an); if (lp != null) { List<InetAddress> dns = lp.getDnsServers(); if (dns != null) { if (dns.size() > 0) dns1 = dns.get(0).getHostAddress(); if (dns.size() > 1) dns2 = dns.get(1).getHostAddress(); for (InetAddress d : dns) Log.i(TAG, "DNS from LP: " + d.getHostAddress()); } } } } else { dns1 = jni_getprop("net.dns1"); dns2 = jni_getprop("net.dns2"); } List<String> listDns = new ArrayList<>(); listDns.add(TextUtils.isEmpty(dns1) ? "8.8.8.8" : dns1); listDns.add(TextUtils.isEmpty(dns2) ? "8.8.4.4" : dns2); return listDns; } public static boolean isNumericAddress(String ip) { return is_numeric_address(ip); } public static boolean isInteractive(Context context) { PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT_WATCH) return (pm != null && pm.isScreenOn()); else return (pm != null && pm.isInteractive()); } public static boolean isPackageInstalled(String packageName, Context context) { try { context.getPackageManager().getPackageInfo(packageName, 0); return true; } catch (PackageManager.NameNotFoundException ignored) { return false; } } public static boolean isSystem(int uid, Context context) { PackageManager pm = context.getPackageManager(); String[] pkgs = pm.getPackagesForUid(uid); if (pkgs != null) for (String pkg : pkgs) if (isSystem(pkg, context)) return true; return false; } public static boolean isSystem(String packageName, Context context) { try { PackageManager pm = context.getPackageManager(); PackageInfo info = pm.getPackageInfo(packageName, 0); return ((info.applicationInfo.flags & (ApplicationInfo.FLAG_SYSTEM | ApplicationInfo.FLAG_UPDATED_SYSTEM_APP)) != 0); /* PackageInfo pkg = pm.getPackageInfo(packageName, PackageManager.GET_SIGNATURES); PackageInfo sys = pm.getPackageInfo("android", PackageManager.GET_SIGNATURES); return (pkg != null && pkg.signatures != null && pkg.signatures.length > 0 && sys.signatures.length > 0 && sys.signatures[0].equals(pkg.signatures[0])); */ } catch (PackageManager.NameNotFoundException ignore) { return false; } } public static boolean hasInternet(String packageName, Context context) { PackageManager pm = context.getPackageManager(); return (pm.checkPermission("android.permission.INTERNET", packageName) == PackageManager.PERMISSION_GRANTED); } public static boolean hasInternet(int uid, Context context) { PackageManager pm = context.getPackageManager(); String[] pkgs = pm.getPackagesForUid(uid); if (pkgs != null) for (String pkg : pkgs) if (hasInternet(pkg, context)) return true; return false; } public static boolean isEnabled(PackageInfo info, Context context) { int setting; try { PackageManager pm = context.getPackageManager(); setting = pm.getApplicationEnabledSetting(info.packageName); } catch (IllegalArgumentException ex) { setting = PackageManager.COMPONENT_ENABLED_STATE_DEFAULT; Log.w(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex)); } if (setting == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT) return info.applicationInfo.enabled; else return (setting == PackageManager.COMPONENT_ENABLED_STATE_ENABLED); } public static List<String> getApplicationNames(int uid, Context context) { List<String> listResult = new ArrayList<>(); if (uid == 0) listResult.add(context.getString(R.string.title_root)); else if (uid == 1013) listResult.add(context.getString(R.string.title_mediaserver)); else if (uid == 9999) listResult.add(context.getString(R.string.title_nobody)); else { PackageManager pm = context.getPackageManager(); String[] pkgs = pm.getPackagesForUid(uid); if (pkgs == null) listResult.add(Integer.toString(uid)); else for (String pkg : pkgs) try { ApplicationInfo info = pm.getApplicationInfo(pkg, 0); listResult.add(pm.getApplicationLabel(info).toString()); } catch (PackageManager.NameNotFoundException ignored) { } Collections.sort(listResult); } return listResult; } public static boolean canFilter(Context context) { // https://android-review.googlesource.com/#/c/206710/1/untrusted_app.te File tcp = new File("/proc/net/tcp"); File tcp6 = new File("/proc/net/tcp6"); try { if (tcp.exists() && tcp.canRead()) return true; } catch (SecurityException ignored) { } try { return (tcp6.exists() && tcp6.canRead()); } catch (SecurityException ignored) { return false; } } public static boolean isDebuggable(Context context) { return ((context.getApplicationContext().getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0); } public static boolean isPlayStoreInstall(Context context) { return "com.android.vending" .equals(context.getPackageManager().getInstallerPackageName(context.getPackageName())); } public static boolean hasPlayServices(Context context) { GoogleApiAvailability api = GoogleApiAvailability.getInstance(); return (api.isGooglePlayServicesAvailable(context) == ConnectionResult.SUCCESS); } public static String getFingerprint(Context context) { try { PackageManager pm = context.getPackageManager(); String pkg = context.getPackageName(); PackageInfo info = pm.getPackageInfo(pkg, PackageManager.GET_SIGNATURES); byte[] cert = info.signatures[0].toByteArray(); MessageDigest digest = MessageDigest.getInstance("SHA1"); byte[] bytes = digest.digest(cert); StringBuilder sb = new StringBuilder(); for (byte b : bytes) sb.append(Integer.toString(b & 0xff, 16).toLowerCase()); return sb.toString(); } catch (Throwable ex) { Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex)); return null; } } public static boolean hasValidFingerprint(Context context) { String calculated = getFingerprint(context); String expected = context.getString(R.string.fingerprint); return (calculated != null && calculated.equals(expected)); } public static void setTheme(Context context) { SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context); boolean dark = prefs.getBoolean("dark_theme", false); String theme = prefs.getString("theme", "teal"); if (theme.equals("teal")) context.setTheme(dark ? R.style.AppThemeTealDark : R.style.AppThemeTeal); else if (theme.equals("blue")) context.setTheme(dark ? R.style.AppThemeBlueDark : R.style.AppThemeBlue); else if (theme.equals("purple")) context.setTheme(dark ? R.style.AppThemePurpleDark : R.style.AppThemePurple); else if (theme.equals("amber")) context.setTheme(dark ? R.style.AppThemeAmberDark : R.style.AppThemeAmber); else if (theme.equals("orange")) context.setTheme(dark ? R.style.AppThemeOrangeDark : R.style.AppThemeOrange); else if (theme.equals("green")) context.setTheme(dark ? R.style.AppThemeGreenDark : R.style.AppThemeGreen); if (context instanceof Activity && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) setTaskColor(context); } @TargetApi(Build.VERSION_CODES.LOLLIPOP) private static void setTaskColor(Context context) { TypedValue tv = new TypedValue(); context.getTheme().resolveAttribute(R.attr.colorPrimary, tv, true); ((Activity) context).setTaskDescription(new ActivityManager.TaskDescription(null, null, tv.data)); } public static int dips2pixels(int dips, Context context) { return Math.round(dips * context.getResources().getDisplayMetrics().density + 0.5f); } private static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { int height = options.outHeight; int width = options.outWidth; int inSampleSize = 1; if (height > reqHeight || width > reqWidth) { int halfHeight = height / 2; int halfWidth = width / 2; while (halfHeight / inSampleSize >= reqHeight && halfWidth / inSampleSize >= reqWidth) inSampleSize *= 2; } return inSampleSize; } public static Bitmap decodeSampledBitmapFromResource(Resources resources, int resourceId, int reqWidth, int reqHeight) { BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeResource(resources, resourceId, options); options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight); options.inJustDecodeBounds = false; return BitmapFactory.decodeResource(resources, resourceId, options); } public static String getProtocolName(int protocol, int version, boolean brief) { // https://en.wikipedia.org/wiki/List_of_IP_protocol_numbers String p = null; String b = null; switch (protocol) { case 0: p = "HOPO"; b = "H"; break; case 2: p = "IGMP"; b = "G"; break; case 1: case 58: p = "ICMP"; b = "I"; break; case 6: p = "TCP"; b = "T"; break; case 17: p = "UDP"; b = "U"; break; case 50: p = "ESP"; b = "E"; break; } if (p == null) return Integer.toString(protocol) + "/" + version; return ((brief ? b : p) + (version > 0 ? version : "")); } public interface DoubtListener { void onSure(); } public static void areYouSure(Context context, int explanation, final DoubtListener listener) { LayoutInflater inflater = LayoutInflater.from(context); View view = inflater.inflate(R.layout.sure, null, false); TextView tvExplanation = view.findViewById(R.id.tvExplanation); tvExplanation.setText(explanation); new AlertDialog.Builder(context).setView(view).setCancelable(true) .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { listener.onSure(); } }).setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // Do nothing } }).create().show(); } private static final Map<String, String> mapIPOrganization = new HashMap<>(); public static String getOrganization(String ip) throws Exception { synchronized (mapIPOrganization) { if (mapIPOrganization.containsKey(ip)) return mapIPOrganization.get(ip); } BufferedReader reader = null; try { URL url = new URL("https://ipinfo.io/" + ip + "/org"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); connection.setReadTimeout(15 * 1000); connection.connect(); reader = new BufferedReader(new InputStreamReader(connection.getInputStream())); String organization = reader.readLine(); if ("undefined".equals(organization)) organization = null; synchronized (mapIPOrganization) { mapIPOrganization.put(ip, organization); } return organization; } finally { if (reader != null) reader.close(); } } public static String md5(String text, String salt) throws NoSuchAlgorithmException, UnsupportedEncodingException { // MD5 byte[] bytes = MessageDigest.getInstance("MD5").digest((text + salt).getBytes("UTF-8")); StringBuilder sb = new StringBuilder(); for (byte b : bytes) sb.append(String.format("%02X", b)); return sb.toString(); } public static void logExtras(Intent intent) { if (intent != null) logBundle(intent.getExtras()); } public static void logBundle(Bundle data) { if (data != null) { Set<String> keys = data.keySet(); StringBuilder stringBuilder = new StringBuilder(); for (String key : keys) { Object value = data.get(key); stringBuilder.append(key).append("=").append(value) .append(value == null ? "" : " (" + value.getClass().getSimpleName() + ")").append("\r\n"); } Log.d(TAG, stringBuilder.toString()); } } public static StringBuilder readString(InputStreamReader reader) { StringBuilder sb = new StringBuilder(2048); char[] read = new char[128]; try { for (int i; (i = reader.read(read)) >= 0; sb.append(read, 0, i)) ; } catch (Throwable ex) { Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex)); } return sb; } public static void sendCrashReport(Throwable ex, final Context context) { if (!isPlayStoreInstall(context) || Util.isDebuggable(context)) return; try { ApplicationErrorReport report = new ApplicationErrorReport(); report.packageName = report.processName = context.getPackageName(); report.time = System.currentTimeMillis(); report.type = ApplicationErrorReport.TYPE_CRASH; report.systemApp = false; ApplicationErrorReport.CrashInfo crash = new ApplicationErrorReport.CrashInfo(); crash.exceptionClassName = ex.getClass().getSimpleName(); crash.exceptionMessage = ex.getMessage(); StringWriter writer = new StringWriter(); PrintWriter printer = new PrintWriter(writer); ex.printStackTrace(printer); crash.stackTrace = writer.toString(); StackTraceElement stack = ex.getStackTrace()[0]; crash.throwClassName = stack.getClassName(); crash.throwFileName = stack.getFileName(); crash.throwLineNumber = stack.getLineNumber(); crash.throwMethodName = stack.getMethodName(); report.crashInfo = crash; final Intent bug = new Intent(Intent.ACTION_APP_ERROR); bug.putExtra(Intent.EXTRA_BUG_REPORT, report); bug.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); if (bug.resolveActivity(context.getPackageManager()) != null) context.startActivity(bug); } catch (Throwable exex) { Log.e(TAG, exex.toString() + "\n" + Log.getStackTraceString(exex)); } } public static String getGeneralInfo(Context context) { StringBuilder sb = new StringBuilder(); TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); sb.append(String.format("Interactive %B\r\n", isInteractive(context))); sb.append(String.format("Connected %B\r\n", isConnected(context))); sb.append(String.format("WiFi %B\r\n", isWifiActive(context))); sb.append(String.format("Metered %B\r\n", isMeteredNetwork(context))); sb.append(String.format("Roaming %B\r\n", isRoaming(context))); if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) sb.append(String.format("SIM %s/%s/%s\r\n", tm.getSimCountryIso(), tm.getSimOperatorName(), tm.getSimOperator())); if (tm.getNetworkType() != TelephonyManager.NETWORK_TYPE_UNKNOWN) sb.append(String.format("Network %s/%s/%s\r\n", tm.getNetworkCountryIso(), tm.getNetworkOperatorName(), tm.getNetworkOperator())); PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) sb.append(String.format("Power saving %B\r\n", pm.isPowerSaveMode())); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) sb.append(String.format("Battery optimizing %B\r\n", batteryOptimizing(context))); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) sb.append(String.format("Data saving %B\r\n", dataSaving(context))); if (sb.length() > 2) sb.setLength(sb.length() - 2); return sb.toString(); } public static String getNetworkInfo(Context context) { StringBuilder sb = new StringBuilder(); ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo ani = cm.getActiveNetworkInfo(); List<NetworkInfo> listNI = new ArrayList<>(); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) listNI.addAll(Arrays.asList(cm.getAllNetworkInfo())); else for (Network network : cm.getAllNetworks()) { NetworkInfo ni = cm.getNetworkInfo(network); if (ni != null) listNI.add(ni); } for (NetworkInfo ni : listNI) { sb.append(ni.getTypeName()).append('/').append(ni.getSubtypeName()).append(' ') .append(ni.getDetailedState()) .append(TextUtils.isEmpty(ni.getExtraInfo()) ? "" : " " + ni.getExtraInfo()) .append(ni.getType() == ConnectivityManager.TYPE_MOBILE ? " " + Util.getNetworkGeneration(ni.getSubtype()) : "") .append(ni.isRoaming() ? " R" : "") .append(ani != null && ni.getType() == ani.getType() && ni.getSubtype() == ani.getSubtype() ? " *" : "") .append("\r\n"); } try { Enumeration<NetworkInterface> nis = NetworkInterface.getNetworkInterfaces(); if (nis != null) while (nis.hasMoreElements()) { NetworkInterface ni = nis.nextElement(); if (ni != null && !ni.isLoopback()) { List<InterfaceAddress> ias = ni.getInterfaceAddresses(); if (ias != null) for (InterfaceAddress ia : ias) sb.append(ni.getName()).append(' ').append(ia.getAddress().getHostAddress()) .append('/').append(ia.getNetworkPrefixLength()).append(' ') .append(ni.getMTU()).append(' ').append(ni.isUp() ? '^' : 'v') .append("\r\n"); } } } catch (Throwable ex) { sb.append(ex.toString()).append("\r\n"); } if (sb.length() > 2) sb.setLength(sb.length() - 2); return sb.toString(); } @TargetApi(Build.VERSION_CODES.M) public static boolean batteryOptimizing(Context context) { PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); return !pm.isIgnoringBatteryOptimizations(context.getPackageName()); } @TargetApi(Build.VERSION_CODES.N) public static boolean dataSaving(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); return (cm.getRestrictBackgroundStatus() == ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED); } public static void sendLogcat(final Uri uri, final Context context) { AsyncTask task = new AsyncTask<Object, Object, Intent>() { @Override protected Intent doInBackground(Object... objects) { StringBuilder sb = new StringBuilder(); sb.append(context.getString(R.string.msg_issue)); sb.append("\r\n\r\n\r\n\r\n"); // Get version info String version = getSelfVersionName(context); sb.append(String.format("NetGuard: %s/%d\r\n", version, getSelfVersionCode(context))); sb.append(String.format("Android: %s (SDK %d)\r\n", Build.VERSION.RELEASE, Build.VERSION.SDK_INT)); sb.append("\r\n"); // Get device info sb.append(String.format("Brand: %s\r\n", Build.BRAND)); sb.append(String.format("Manufacturer: %s\r\n", Build.MANUFACTURER)); sb.append(String.format("Model: %s\r\n", Build.MODEL)); sb.append(String.format("Product: %s\r\n", Build.PRODUCT)); sb.append(String.format("Device: %s\r\n", Build.DEVICE)); sb.append(String.format("Host: %s\r\n", Build.HOST)); sb.append(String.format("Display: %s\r\n", Build.DISPLAY)); sb.append(String.format("Id: %s\r\n", Build.ID)); sb.append(String.format("Fingerprint: %B\r\n", hasValidFingerprint(context))); String abi; if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) abi = Build.CPU_ABI; else abi = (Build.SUPPORTED_ABIS.length > 0 ? Build.SUPPORTED_ABIS[0] : "?"); sb.append(String.format("ABI: %s\r\n", abi)); sb.append("\r\n"); sb.append(String.format("VPN dialogs: %B\r\n", isPackageInstalled("com.android.vpndialogs", context))); try { sb.append(String.format("Prepared: %B\r\n", VpnService.prepare(context) == null)); } catch (Throwable ex) { sb.append("Prepared: ").append((ex.toString())).append("\r\n") .append(Log.getStackTraceString(ex)); } sb.append("\r\n"); sb.append(getGeneralInfo(context)); sb.append("\r\n\r\n"); sb.append(getNetworkInfo(context)); sb.append("\r\n\r\n"); // Get DNS sb.append("DNS system:\r\n"); for (String dns : getDefaultDNS(context)) sb.append("- ").append(dns).append("\r\n"); sb.append("DNS VPN:\r\n"); for (InetAddress dns : ServiceSinkhole.getDns(context)) sb.append("- ").append(dns).append("\r\n"); sb.append("\r\n"); // Get TCP connection info String line; BufferedReader in; try { sb.append("/proc/net/tcp:\r\n"); in = new BufferedReader(new FileReader("/proc/net/tcp")); while ((line = in.readLine()) != null) sb.append(line).append("\r\n"); in.close(); sb.append("\r\n"); sb.append("/proc/net/tcp6:\r\n"); in = new BufferedReader(new FileReader("/proc/net/tcp6")); while ((line = in.readLine()) != null) sb.append(line).append("\r\n"); in.close(); sb.append("\r\n"); } catch (IOException ex) { sb.append(ex.toString()).append("\r\n"); } // Get settings SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context); Map<String, ?> all = prefs.getAll(); for (String key : all.keySet()) sb.append("Setting: ").append(key).append('=').append(all.get(key)).append("\r\n"); sb.append("\r\n"); // Write logcat OutputStream out = null; try { Log.i(TAG, "Writing logcat URI=" + uri); out = context.getContentResolver().openOutputStream(uri); out.write(getLogcat().toString().getBytes()); out.write(getTrafficLog(context).toString().getBytes()); } catch (Throwable ex) { Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex)); sb.append(ex.toString()).append("\r\n").append(Log.getStackTraceString(ex)).append("\r\n"); } finally { if (out != null) try { out.close(); } catch (IOException ignored) { } } // Build intent Intent sendEmail = new Intent(Intent.ACTION_SEND); sendEmail.setType("message/rfc822"); sendEmail.putExtra(Intent.EXTRA_EMAIL, new String[] { "marcel+netguard@faircode.eu" }); sendEmail.putExtra(Intent.EXTRA_SUBJECT, "NetGuard " + version + " logcat"); sendEmail.putExtra(Intent.EXTRA_TEXT, sb.toString()); sendEmail.putExtra(Intent.EXTRA_STREAM, uri); return sendEmail; } @Override protected void onPostExecute(Intent sendEmail) { if (sendEmail != null) try { context.startActivity(sendEmail); } catch (Throwable ex) { Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex)); } } }; task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR); } private static StringBuilder getTrafficLog(Context context) { StringBuilder sb = new StringBuilder(); Cursor cursor = DatabaseHelper.getInstance(context).getLog(true, true, true, true, true); int colTime = cursor.getColumnIndex("time"); int colVersion = cursor.getColumnIndex("version"); int colProtocol = cursor.getColumnIndex("protocol"); int colFlags = cursor.getColumnIndex("flags"); int colSAddr = cursor.getColumnIndex("saddr"); int colSPort = cursor.getColumnIndex("sport"); int colDAddr = cursor.getColumnIndex("daddr"); int colDPort = cursor.getColumnIndex("dport"); int colDName = cursor.getColumnIndex("dname"); int colUid = cursor.getColumnIndex("uid"); int colData = cursor.getColumnIndex("data"); int colAllowed = cursor.getColumnIndex("allowed"); int colConnection = cursor.getColumnIndex("connection"); int colInteractive = cursor.getColumnIndex("interactive"); DateFormat format = SimpleDateFormat.getDateTimeInstance(); int count = 0; while (cursor.moveToNext() && ++count < 250) { sb.append(format.format(cursor.getLong(colTime))); sb.append(" v").append(cursor.getInt(colVersion)); sb.append(" p").append(cursor.getInt(colProtocol)); sb.append(' ').append(cursor.getString(colFlags)); sb.append(' ').append(cursor.getString(colSAddr)); sb.append('/').append(cursor.getInt(colSPort)); sb.append(" > ").append(cursor.getString(colDAddr)); sb.append('/').append(cursor.getString(colDName)); sb.append('/').append(cursor.getInt(colDPort)); sb.append(" u").append(cursor.getInt(colUid)); sb.append(" a").append(cursor.getInt(colAllowed)); sb.append(" c").append(cursor.getInt(colConnection)); sb.append(" i").append(cursor.getInt(colInteractive)); sb.append(' ').append(cursor.getString(colData)); sb.append("\r\n"); } cursor.close(); return sb; } private static StringBuilder getLogcat() { StringBuilder builder = new StringBuilder(); Process process1 = null; Process process2 = null; BufferedReader br = null; try { String[] command1 = new String[] { "logcat", "-d", "-v", "threadtime" }; process1 = Runtime.getRuntime().exec(command1); br = new BufferedReader(new InputStreamReader(process1.getInputStream())); int count = 0; String line; while ((line = br.readLine()) != null) { count++; builder.append(line).append("\r\n"); } Log.i(TAG, "Logcat lines=" + count); } catch (IOException ex) { Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex)); } finally { if (br != null) try { br.close(); } catch (IOException ignored) { } if (process2 != null) try { process2.destroy(); } catch (Throwable ex) { Log.w(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex)); } if (process1 != null) try { process1.destroy(); } catch (Throwable ex) { Log.w(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex)); } } return builder; } }