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package de.pixart.messenger.services;
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.PowerManager;
import android.os.SystemClock;
import android.util.Log;
import android.util.Pair;
import org.bouncycastle.crypto.engines.AESEngine;
import org.bouncycastle.crypto.modes.AEADBlockCipher;
import org.bouncycastle.crypto.modes.GCMBlockCipher;
import org.bouncycastle.crypto.params.AEADParameters;
import org.bouncycastle.crypto.params.KeyParameter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.concurrent.atomic.AtomicLong;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.CipherOutputStream;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import de.pixart.messenger.Config;
import de.pixart.messenger.R;
import de.pixart.messenger.entities.DownloadableFile;
public class AbstractConnectionManager {
protected XmppConnectionService mXmppConnectionService;
private static final int UI_REFRESH_THRESHOLD = 250;
private static final AtomicLong LAST_UI_UPDATE_CALL = new AtomicLong(0);
public AbstractConnectionManager(XmppConnectionService service) {
this.mXmppConnectionService = service;
}
public XmppConnectionService getXmppConnectionService() {
return this.mXmppConnectionService;
}
public long getAutoAcceptFileSize() {
long defaultValue_wifi = this.getXmppConnectionService().getResources().getInteger(R.integer.auto_accept_filesize_wifi);
long defaultValue_mobile = this.getXmppConnectionService().getResources().getInteger(R.integer.auto_accept_filesize_mobile);
long defaultValue_roaming = this.getXmppConnectionService().getResources().getInteger(R.integer.auto_accept_filesize_roaming);
String config = "0";
if (mXmppConnectionService.isWIFI()) {
config = this.mXmppConnectionService.getPreferences().getString(
"auto_accept_file_size_wifi", String.valueOf(defaultValue_wifi));
} else if (mXmppConnectionService.isMobile()) {
config = this.mXmppConnectionService.getPreferences().getString(
"auto_accept_file_size_mobile", String.valueOf(defaultValue_mobile));
} else if (mXmppConnectionService.isMobileRoaming()) {
config = this.mXmppConnectionService.getPreferences().getString(
"auto_accept_file_size_roaming", String.valueOf(defaultValue_roaming));
}
try {
return Long.parseLong(config);
} catch (NumberFormatException e) {
return defaultValue_mobile;
}
}
public boolean hasStoragePermission() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
return mXmppConnectionService.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
} else {
return true;
}
}
public static Pair<InputStream, Integer> createInputStream(DownloadableFile file, boolean gcm) throws FileNotFoundException {
FileInputStream is;
int size;
is = new FileInputStream(file);
size = (int) file.getSize();
if (file.getKey() == null) {
return new Pair<>(is, size);
}
try {
if (gcm) {
AEADBlockCipher cipher = new GCMBlockCipher(new AESEngine());
cipher.init(true, new AEADParameters(new KeyParameter(file.getKey()), 128, file.getIv()));
InputStream cis = new org.bouncycastle.crypto.io.CipherInputStream(is, cipher);
return new Pair<>(cis, cipher.getOutputSize(size));
} else {
IvParameterSpec ips = new IvParameterSpec(file.getIv());
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(file.getKey(), "AES"), ips);
Log.d(Config.LOGTAG, "opening encrypted input stream");
return new Pair<>(new CipherInputStream(is, cipher), (size / 16 + 1) * 16);
}
} catch (Exception e) {
throw new AssertionError(e);
}
}
public static OutputStream createAppendedOutputStream(DownloadableFile file) {
return createOutputStream(file, false, true);
}
public static OutputStream createOutputStream(DownloadableFile file, boolean gcm) {
return createOutputStream(file, gcm, false);
}
private static OutputStream createOutputStream(DownloadableFile file, boolean gcm, boolean append) {
FileOutputStream os;
try {
os = new FileOutputStream(file, append);
if (file.getKey() == null) {
return os;
}
} catch (FileNotFoundException e) {
return null;
}
try {
if (gcm) {
AEADBlockCipher cipher = new GCMBlockCipher(new AESEngine());
cipher.init(false, new AEADParameters(new KeyParameter(file.getKey()), 128, file.getIv()));
return new org.bouncycastle.crypto.io.CipherOutputStream(os, cipher);
} else {
IvParameterSpec ips = new IvParameterSpec(file.getIv());
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(file.getKey(), "AES"), ips);
Log.d(Config.LOGTAG, "opening encrypted output stream");
return new CipherOutputStream(os, cipher);
}
} catch (InvalidKeyException e) {
return null;
} catch (NoSuchAlgorithmException e) {
return null;
} catch (NoSuchPaddingException e) {
return null;
} catch (InvalidAlgorithmParameterException e) {
return null;
}
}
public void updateConversationUi(boolean force) {
synchronized (LAST_UI_UPDATE_CALL) {
if (force || SystemClock.elapsedRealtime() - LAST_UI_UPDATE_CALL.get() >= UI_REFRESH_THRESHOLD) {
LAST_UI_UPDATE_CALL.set(SystemClock.elapsedRealtime());
mXmppConnectionService.updateConversationUi();
}
}
}
public PowerManager.WakeLock createWakeLock(String name) {
PowerManager powerManager = (PowerManager) mXmppConnectionService.getSystemService(Context.POWER_SERVICE);
return powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, name);
}
}
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