AIDL API changes
This commit is contained in:
Dominik Schürmann
328
APG/src/org/thialfihar/android/apg/service/ApgApiService.java
Normal file
328
APG/src/org/thialfihar/android/apg/service/ApgApiService.java
Normal file
@@ -0,0 +1,328 @@
|
||||
/*
|
||||
* Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de>
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.thialfihar.android.apg.service;
|
||||
|
||||
import java.io.ByteArrayInputStream;
|
||||
import java.io.ByteArrayOutputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.io.OutputStream;
|
||||
import java.security.NoSuchAlgorithmException;
|
||||
import java.security.NoSuchProviderException;
|
||||
import java.security.SignatureException;
|
||||
|
||||
import org.spongycastle.openpgp.PGPException;
|
||||
import org.thialfihar.android.apg.Constants;
|
||||
import org.thialfihar.android.apg.Id;
|
||||
import org.thialfihar.android.apg.R;
|
||||
import org.thialfihar.android.apg.helper.PGPMain;
|
||||
import org.thialfihar.android.apg.helper.PGPMain.ApgGeneralException;
|
||||
import org.thialfihar.android.apg.service.handler.IApgDecryptHandler;
|
||||
import org.thialfihar.android.apg.service.handler.IApgEncryptHandler;
|
||||
import org.thialfihar.android.apg.service.handler.IApgGetDecryptionKeyIdHandler;
|
||||
import org.thialfihar.android.apg.util.InputData;
|
||||
import org.thialfihar.android.apg.util.Log;
|
||||
|
||||
import android.app.Service;
|
||||
import android.content.Context;
|
||||
import android.content.Intent;
|
||||
import android.os.Bundle;
|
||||
import android.os.IBinder;
|
||||
import android.os.RemoteException;
|
||||
|
||||
/**
|
||||
* TODO:
|
||||
*
|
||||
* - is this service thread safe? Probably not!
|
||||
*
|
||||
*/
|
||||
public class ApgApiService extends Service {
|
||||
Context mContext;
|
||||
|
||||
@Override
|
||||
public void onCreate() {
|
||||
super.onCreate();
|
||||
mContext = this;
|
||||
Log.d(Constants.TAG, "ApgApiService, onCreate()");
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onDestroy() {
|
||||
super.onDestroy();
|
||||
Log.d(Constants.TAG, "ApgApiService, onDestroy()");
|
||||
}
|
||||
|
||||
@Override
|
||||
public IBinder onBind(Intent intent) {
|
||||
return mBinder;
|
||||
}
|
||||
|
||||
// private static void writeToOutputStream(InputStream is, OutputStream os) throws IOException {
|
||||
// byte[] buffer = new byte[8];
|
||||
// int len = 0;
|
||||
// while ((len = is.read(buffer)) != -1) {
|
||||
// os.write(buffer, 0, len);
|
||||
// }
|
||||
// }
|
||||
|
||||
private void encryptAndSignImplementation(byte[] inputBytes, String inputUri,
|
||||
boolean useAsciiArmor, int compression, long[] encryptionKeyIds,
|
||||
String encryptionPassphrase, int symmetricEncryptionAlgorithm, long signatureKeyId,
|
||||
int signatureHashAlgorithm, boolean signatureForceV3, String signaturePassphrase,
|
||||
IApgEncryptHandler handler) throws RemoteException {
|
||||
|
||||
try {
|
||||
// TODO use inputUri
|
||||
|
||||
// InputStream inStream = null;
|
||||
// if (isBlob) {
|
||||
// ContentResolver cr = getContentResolver();
|
||||
// try {
|
||||
// inStream = cr.openInputStream(Uri.parse(pArgs.getString(arg.BLOB.name())));
|
||||
// } catch (Exception e) {
|
||||
// Log.e(TAG, "... exception on opening blob", e);
|
||||
// }
|
||||
// } else {
|
||||
// inStream = new ByteArrayInputStream(pArgs.getString(arg.MESSAGE.name()).getBytes());
|
||||
// }
|
||||
// InputData in = new InputData(inStream, 0); // XXX Size second param?
|
||||
|
||||
// build InputData and write into OutputStream
|
||||
InputStream inputStream = new ByteArrayInputStream(inputBytes);
|
||||
long inputLength = inputBytes.length;
|
||||
InputData input = new InputData(inputStream, inputLength);
|
||||
|
||||
OutputStream output = new ByteArrayOutputStream();
|
||||
|
||||
PGPMain.encryptAndSign(mContext, null, input, output, useAsciiArmor, compression,
|
||||
encryptionKeyIds, encryptionPassphrase, symmetricEncryptionAlgorithm,
|
||||
signatureKeyId, signatureHashAlgorithm, signatureForceV3, signaturePassphrase);
|
||||
|
||||
output.close();
|
||||
|
||||
// if (isBlob) {
|
||||
// ContentResolver cr = getContentResolver();
|
||||
// try {
|
||||
// OutputStream outStream = cr.openOutputStream(Uri.parse(pArgs.getString(arg.BLOB
|
||||
// .name())));
|
||||
// writeToOutputStream(new ByteArrayInputStream(out.toString().getBytes()), outStream);
|
||||
// outStream.close();
|
||||
// } catch (Exception e) {
|
||||
// Log.e(TAG, "... exception on writing blob", e);
|
||||
// }
|
||||
// } else {
|
||||
// pReturn.putString(ret.RESULT.name(), out.toString());
|
||||
// }
|
||||
|
||||
byte[] outputBytes = ((ByteArrayOutputStream) output).toByteArray();
|
||||
|
||||
// return over handler on client side
|
||||
handler.onSuccess(outputBytes, null);
|
||||
} catch (Exception e) {
|
||||
Log.e(Constants.TAG, "ApgService, Exception!", e);
|
||||
|
||||
try {
|
||||
handler.onException(getExceptionId(e), e.getMessage());
|
||||
} catch (Exception t) {
|
||||
Log.e(Constants.TAG, "Error returning exception to client", t);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void decryptAndVerifyImplementation(byte[] inputBytes, String inputUri,
|
||||
String passphrase, boolean assumeSymmetric, IApgDecryptHandler handler)
|
||||
throws RemoteException {
|
||||
|
||||
try {
|
||||
// build InputData and write into OutputStream
|
||||
InputStream inputStream = new ByteArrayInputStream(inputBytes);
|
||||
long inputLength = inputBytes.length;
|
||||
InputData inputData = new InputData(inputStream, inputLength);
|
||||
|
||||
OutputStream outputStream = new ByteArrayOutputStream();
|
||||
|
||||
Bundle outputBundle = PGPMain.decryptAndVerify(mContext, null, inputData, outputStream,
|
||||
passphrase, assumeSymmetric);
|
||||
|
||||
outputStream.close();
|
||||
|
||||
byte[] outputBytes = ((ByteArrayOutputStream) outputStream).toByteArray();
|
||||
|
||||
// get signature informations from bundle
|
||||
boolean signature = outputBundle.getBoolean(ApgIntentService.RESULT_SIGNATURE);
|
||||
long signatureKeyId = outputBundle.getLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID);
|
||||
String signatureUserId = outputBundle
|
||||
.getString(ApgIntentService.RESULT_SIGNATURE_USER_ID);
|
||||
boolean signatureSuccess = outputBundle
|
||||
.getBoolean(ApgIntentService.RESULT_SIGNATURE_SUCCESS);
|
||||
boolean signatureUnknown = outputBundle
|
||||
.getBoolean(ApgIntentService.RESULT_SIGNATURE_UNKNOWN);
|
||||
|
||||
// return over handler on client side
|
||||
handler.onSuccess(outputBytes, null, signature, signatureKeyId, signatureUserId,
|
||||
signatureSuccess, signatureUnknown);
|
||||
} catch (Exception e) {
|
||||
Log.e(Constants.TAG, "ApgService, Exception!", e);
|
||||
|
||||
try {
|
||||
handler.onException(getExceptionId(e), e.getMessage());
|
||||
} catch (Exception t) {
|
||||
Log.e(Constants.TAG, "Error returning exception to client", t);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void getDecryptionKeyImplementation(byte[] inputBytes, String inputUri,
|
||||
IApgGetDecryptionKeyIdHandler handler) {
|
||||
|
||||
// TODO: implement inputUri
|
||||
|
||||
try {
|
||||
InputStream inputStream = new ByteArrayInputStream(inputBytes);
|
||||
|
||||
long secretKeyId = Id.key.none;
|
||||
boolean symmetric;
|
||||
|
||||
try {
|
||||
secretKeyId = PGPMain.getDecryptionKeyId(ApgApiService.this, inputStream);
|
||||
if (secretKeyId == Id.key.none) {
|
||||
throw new ApgGeneralException(getString(R.string.error_noSecretKeyFound));
|
||||
}
|
||||
symmetric = false;
|
||||
} catch (PGPMain.NoAsymmetricEncryptionException e) {
|
||||
secretKeyId = Id.key.symmetric;
|
||||
if (!PGPMain.hasSymmetricEncryption(ApgApiService.this, inputStream)) {
|
||||
throw new ApgGeneralException(getString(R.string.error_noKnownEncryptionFound));
|
||||
}
|
||||
symmetric = true;
|
||||
}
|
||||
|
||||
handler.onSuccess(secretKeyId, symmetric);
|
||||
|
||||
} catch (Exception e) {
|
||||
Log.e(Constants.TAG, "ApgService, Exception!", e);
|
||||
|
||||
try {
|
||||
handler.onException(getExceptionId(e), e.getMessage());
|
||||
} catch (Exception t) {
|
||||
Log.e(Constants.TAG, "Error returning exception to client", t);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* This is the implementation of the interface IApgService. All methods are oneway, meaning
|
||||
* asynchronous and return to the client using IApgHandler.
|
||||
*
|
||||
* The real PGP code is located in PGPMain.
|
||||
*/
|
||||
private final IApgApiService.Stub mBinder = new IApgApiService.Stub() {
|
||||
|
||||
@Override
|
||||
public void encryptAsymmetric(byte[] inputBytes, String inputUri, boolean useAsciiArmor,
|
||||
int compression, long[] encryptionKeyIds, int symmetricEncryptionAlgorithm,
|
||||
IApgEncryptHandler handler) throws RemoteException {
|
||||
|
||||
encryptAndSignImplementation(inputBytes, inputUri, useAsciiArmor, compression,
|
||||
encryptionKeyIds, null, symmetricEncryptionAlgorithm, Id.key.none, 0, false,
|
||||
null, handler);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void encryptSymmetric(byte[] inputBytes, String inputUri, boolean useAsciiArmor,
|
||||
int compression, String encryptionPassphrase, int symmetricEncryptionAlgorithm,
|
||||
IApgEncryptHandler handler) throws RemoteException {
|
||||
|
||||
encryptAndSignImplementation(inputBytes, inputUri, useAsciiArmor, compression, null,
|
||||
encryptionPassphrase, symmetricEncryptionAlgorithm, Id.key.none, 0, false,
|
||||
null, handler);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void encryptAndSignAsymmetric(byte[] inputBytes, String inputUri,
|
||||
boolean useAsciiArmor, int compression, long[] encryptionKeyIds,
|
||||
int symmetricEncryptionAlgorithm, long signatureKeyId, int signatureHashAlgorithm,
|
||||
boolean signatureForceV3, String signaturePassphrase, IApgEncryptHandler handler)
|
||||
throws RemoteException {
|
||||
|
||||
encryptAndSignImplementation(inputBytes, inputUri, useAsciiArmor, compression,
|
||||
encryptionKeyIds, null, symmetricEncryptionAlgorithm, signatureKeyId,
|
||||
signatureHashAlgorithm, signatureForceV3, signaturePassphrase, handler);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void encryptAndSignSymmetric(byte[] inputBytes, String inputUri,
|
||||
boolean useAsciiArmor, int compression, String encryptionPassphrase,
|
||||
int symmetricEncryptionAlgorithm, long signatureKeyId, int signatureHashAlgorithm,
|
||||
boolean signatureForceV3, String signaturePassphrase, IApgEncryptHandler handler)
|
||||
throws RemoteException {
|
||||
|
||||
encryptAndSignImplementation(inputBytes, inputUri, useAsciiArmor, compression, null,
|
||||
encryptionPassphrase, symmetricEncryptionAlgorithm, signatureKeyId,
|
||||
signatureHashAlgorithm, signatureForceV3, signaturePassphrase, handler);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void decryptAndVerifyAsymmetric(byte[] inputBytes, String inputUri,
|
||||
String keyPassphrase, IApgDecryptHandler handler) throws RemoteException {
|
||||
|
||||
decryptAndVerifyImplementation(inputBytes, inputUri, keyPassphrase, false, handler);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void decryptAndVerifySymmetric(byte[] inputBytes, String inputUri,
|
||||
String encryptionPassphrase, IApgDecryptHandler handler) throws RemoteException {
|
||||
|
||||
decryptAndVerifyImplementation(inputBytes, inputUri, encryptionPassphrase, true,
|
||||
handler);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void getDecryptionKeyId(byte[] inputBytes, String inputUri,
|
||||
IApgGetDecryptionKeyIdHandler handler) throws RemoteException {
|
||||
|
||||
getDecryptionKeyImplementation(inputBytes, inputUri, handler);
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
/**
|
||||
* As we can not throw an exception through Android RPC, we assign identifiers to the exception
|
||||
* types.
|
||||
*
|
||||
* @param e
|
||||
* @return
|
||||
*/
|
||||
private int getExceptionId(Exception e) {
|
||||
if (e instanceof NoSuchProviderException) {
|
||||
return 0;
|
||||
} else if (e instanceof NoSuchAlgorithmException) {
|
||||
return 1;
|
||||
} else if (e instanceof SignatureException) {
|
||||
return 2;
|
||||
} else if (e instanceof IOException) {
|
||||
return 3;
|
||||
} else if (e instanceof ApgGeneralException) {
|
||||
return 4;
|
||||
} else if (e instanceof PGPException) {
|
||||
return 5;
|
||||
} else {
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user