NetGuard/app/src/main/java/eu/faircode/netguard/Util.java

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package eu.faircode.netguard;
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/*
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 by Marcel Bokhorst (M66B)
*/
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import android.app.ApplicationErrorReport;
import android.content.Context;
import android.content.Intent;
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import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
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import android.net.ConnectivityManager;
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import android.net.Network;
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import android.net.NetworkInfo;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.PowerManager;
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import android.preference.PreferenceManager;
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import android.telephony.TelephonyManager;
import android.util.Log;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
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import java.io.PrintWriter;
import java.io.StringWriter;
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import java.security.MessageDigest;
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import java.util.Map;
import java.util.Set;
public class Util {
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private static final String TAG = "NetGuard.Util";
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;
}
}
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public static boolean isConnected(Context context) {
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo ni = cm.getActiveNetworkInfo();
return (ni != null && ni.isConnected());
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}
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public static boolean isWifiActive(Context context) {
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ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo ni = cm.getActiveNetworkInfo();
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return (ni != null && ni.getType() == ConnectivityManager.TYPE_WIFI);
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}
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public static boolean isMeteredNetwork(Context context) {
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
return cm.isActiveNetworkMetered();
}
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public static boolean isRoaming(Context context) {
TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
return tm.isNetworkRoaming();
}
public static boolean isInteractive(Context context) {
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
return pm.isInteractive();
}
public static boolean isPackageInstalled(String packageName, Context context) {
try {
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context.getPackageManager().getPackageInfo(packageName, 0);
return true;
} catch (PackageManager.NameNotFoundException ignored) {
return false;
}
}
public static boolean isDebuggable(Context context) {
return ((context.getApplicationContext().getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0);
}
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public static boolean hasValidFingerprint(Context context) {
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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 (int i = 0; i < bytes.length; ++i)
sb.append(Integer.toString(bytes[i] & 0xff, 16).toLowerCase());
String calculated = sb.toString();
String expected = context.getString(R.string.fingerprint);
return calculated.equals(expected);
} catch (Throwable ex) {
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Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
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return false;
}
}
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public static void logExtras(Intent intent) {
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if (intent != null)
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logBundle(intent.getExtras());
}
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public static void logBundle(Bundle data) {
if (data != null) {
Set<String> keys = data.keySet();
StringBuilder stringBuilder = new StringBuilder();
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for (String key : keys) {
Object value = data.get(key);
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stringBuilder.append(key)
.append("=")
.append(value)
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.append(value == null ? "" : " (" + value.getClass().getSimpleName() + ")")
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.append("\r\n");
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}
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Log.d(TAG, stringBuilder.toString());
}
}
public static void sendCrashReport(Throwable ex, final Context context) {
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)
sendLogcat(ex.toString() + "\n" + Log.getStackTraceString(ex), context);
else
context.startActivity(bug);
} catch (Throwable exex) {
Log.e(TAG, exex.toString() + "\n" + Log.getStackTraceString(exex));
}
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}
public static void sendLogcat(final String message, final Context context) {
AsyncTask task = new AsyncTask<Object, Object, Intent>() {
@Override
protected Intent doInBackground(Object... objects) {
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PackageInfo pInfo;
try {
pInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
} catch (PackageManager.NameNotFoundException ex) {
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Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
return null;
}
StringBuilder sb = new StringBuilder();
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sb.append(String.format("NetGuard: %s\r\n", pInfo.versionName + "/" + pInfo.versionCode));
sb.append(String.format("Android: %s (SDK %d)\r\n", Build.VERSION.RELEASE, Build.VERSION.SDK_INT));
sb.append("\r\n");
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));
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sb.append(String.format("Fingerprint: %b\r\n", hasValidFingerprint(context)));
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sb.append(String.format("VPN dialogs: %b\r\n", isPackageInstalled("com.android.vpndialogs", context)));
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sb.append(String.format("Interactive: %b\r\n", isInteractive(context)));
sb.append(String.format("WiFi: %b\r\n", isWifiActive(context)));
sb.append(String.format("Metered: %b\r\n", isMeteredNetwork(context)));
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ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
for (Network network : cm.getAllNetworks()) {
NetworkInfo ni = cm.getNetworkInfo(network);
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if (ni != null)
sb.append("Network: ")
.append(ni.getTypeName())
.append("/")
.append(ni.getSubtypeName())
.append(" ")
.append(ni.getDetailedState())
.append(ni.isRoaming() ? " R" : "")
.append("\r\n");
}
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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");
if (message != null)
sb.append(message).append("\r\n");
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sb.append("\r\n");
sb.append("Please describe your problem:\r\n");
sb.append("\r\n");
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 " + pInfo.versionName + " logcat");
sendEmail.putExtra(Intent.EXTRA_TEXT, sb.toString());
File logcatFolder = context.getExternalCacheDir();
logcatFolder.mkdirs();
File logcatFile = new File(logcatFolder, "logcat.txt");
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Log.i(TAG, "Writing " + logcatFile);
FileOutputStream fos = null;
try {
fos = new FileOutputStream(logcatFile);
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fos.write(getLogcat().toString().getBytes());
} catch (Throwable ex) {
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Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
} finally {
if (fos != null)
try {
fos.close();
} catch (IOException ignored) {
}
}
logcatFile.setReadable(true);
sendEmail.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(logcatFile));
return sendEmail;
}
@Override
protected void onPostExecute(Intent sendEmail) {
if (sendEmail != null)
try {
context.startActivity(sendEmail);
} catch (Throwable ex) {
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Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
}
}
};
task.execute();
}
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private static StringBuilder getLogcat() {
String pid = Integer.toString(android.os.Process.myPid());
StringBuilder builder = new StringBuilder();
Process process = null;
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BufferedReader br = null;
try {
String[] command = new String[]{"logcat", "-d", "-v", "threadtime"};
process = Runtime.getRuntime().exec(command);
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br = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
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while ((line = br.readLine()) != null)
if (line.contains(pid)) {
builder.append(line);
builder.append("\r\n");
}
} catch (IOException ex) {
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Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
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} finally {
if (br != null)
try {
br.close();
} catch (IOException ignored) {
}
if (process != null)
process.destroy();
}
return builder;
}
}