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/*
* Copyright (c) 2012-2016 Arne Schwabe
* Distributed under the GNU GPL v2 with additional terms. For full terms see the file doc/LICENSE.txt
*/
package de.blinkt.openvpn.core;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.Vector;
import de.blinkt.openvpn.R;
import de.blinkt.openvpn.VpnProfile;
public class VPNLaunchHelper {
private static final String MINIPIEVPN = "pie_openvpn";
private static String writeMiniVPN(Context context) {
String nativeAPI = NativeUtils.getNativeAPI();
/* Q does not allow executing binaries written in temp directory anymore */
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P)
return new File(context.getApplicationInfo().nativeLibraryDir, "libovpnexec.so").getPath();
String[] abis = Build.SUPPORTED_ABIS;
if (!nativeAPI.equals(abis[0])) {
VpnStatus.logWarning(R.string.abi_mismatch, Arrays.toString(abis), nativeAPI);
abis = new String[]{nativeAPI};
}
for (String abi : abis) {
File vpnExecutable = new File(context.getCacheDir(), "c_" + MINIPIEVPN + "." + abi);
if ((vpnExecutable.exists() && vpnExecutable.canExecute()) || writeMiniVPNBinary(context, abi, vpnExecutable)) {
return vpnExecutable.getPath();
}
}
throw new RuntimeException("Cannot find any executable for this device's ABIs " + Arrays.toString(abis));
}
static String[] buildOpenvpnArgv(Context c) {
Vector<String> args = new Vector<>();
String binaryName = writeMiniVPN(c);
// Add fixed paramenters
//args.add("/data/data/de.blinkt.openvpn/lib/openvpn");
args.add(binaryName);
args.add("--config");
args.add("stdin");
return args.toArray(new String[0]);
}
private static boolean writeMiniVPNBinary(Context context, String abi, File mvpnout) {
try {
InputStream mvpn;
try {
mvpn = context.getAssets().open(MINIPIEVPN + "." + abi);
} catch (IOException errabi) {
VpnStatus.logInfo("Failed getting assets for architecture " + abi);
return false;
}
FileOutputStream fout = new FileOutputStream(mvpnout);
byte[] buf = new byte[4096];
int lenread = mvpn.read(buf);
while (lenread > 0) {
fout.write(buf, 0, lenread);
lenread = mvpn.read(buf);
}
fout.close();
if (!mvpnout.setExecutable(true)) {
VpnStatus.logError("Failed to make OpenVPN executable");
return false;
}
return true;
} catch (IOException e) {
VpnStatus.logException(e);
return false;
}
}
public static void startOpenVpn(VpnProfile startprofile, Context context, String startReason) {
Intent startVPN = startprofile.getStartServiceIntent(context, startReason);
if (startVPN != null) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
//noinspection NewApi
context.startForegroundService(startVPN);
else
context.startService(startVPN);
}
}
}
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