@@ -6,140 +6,128 @@ 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 eu.siacs.conversations.Config;
import eu.siacs.conversations.R;
import eu.siacs.conversations.entities.DownloadableFile;
+import eu.siacs.conversations.utils.Compatibility;
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() {
- return this.mXmppConnectionService.getLongPreference("auto_accept_file_size",R.integer.auto_accept_filesize);
- }
-
- public boolean hasStoragePermission() {
- if (!Config.ONLY_INTERNAL_STORAGE && 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);
- }
+
+ private static final String KEYTYPE = "AES";
+ private static final String CIPHERMODE = "AES/GCM/NoPadding";
+ private static final String PROVIDER = "BC";
+ private static final int UI_REFRESH_THRESHOLD = 250;
+ private static final AtomicLong LAST_UI_UPDATE_CALL = new AtomicLong(0);
+ protected XmppConnectionService mXmppConnectionService;
+
+ public AbstractConnectionManager(XmppConnectionService service) {
+ this.mXmppConnectionService = service;
+ }
+
+ 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) {
+ Cipher cipher = Compatibility.twentyTwo() ? Cipher.getInstance(CIPHERMODE) : Cipher.getInstance(CIPHERMODE, PROVIDER);
+ SecretKeySpec keySpec = new SecretKeySpec(file.getKey(), KEYTYPE);
+ IvParameterSpec ivSpec = new IvParameterSpec(file.getIv());
+ cipher.init(Cipher.ENCRYPT_MODE, keySpec, ivSpec);
+ return new Pair<>(new CipherInputStream(is, cipher), 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(), KEYTYPE), ips);
+ 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) {
+ Cipher cipher = Compatibility.twentyTwo() ? Cipher.getInstance(CIPHERMODE) : Cipher.getInstance(CIPHERMODE, PROVIDER);
+ SecretKeySpec keySpec = new SecretKeySpec(file.getKey(), KEYTYPE);
+ IvParameterSpec ivSpec = new IvParameterSpec(file.getIv());
+ cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);
+ return new 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(), KEYTYPE), ips);
+ return new CipherOutputStream(os, cipher);
+ }
+ } catch (Exception e) {
+ throw new AssertionError(e);
+ }
+ }
+
+ public XmppConnectionService getXmppConnectionService() {
+ return this.mXmppConnectionService;
+ }
+
+ public long getAutoAcceptFileSize() {
+ return this.mXmppConnectionService.getLongPreference("auto_accept_file_size", R.integer.auto_accept_filesize);
+ }
+
+ public boolean hasStoragePermission() {
+ if (!Config.ONLY_INTERNAL_STORAGE && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+ return mXmppConnectionService.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
+ } else {
+ return true;
+ }
+ }
+
+ 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);
+ }
}