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/*
* 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.sufficientlysecure.keychain.integration;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.net.Uri;
import android.util.Log;
public class KeychainServiceHelper {
private final static String BLOB_URI = "content://org.sufficientlysecure.keychain.provider.apgserviceblobprovider";
private Context context;
public KeychainServiceHelper(Context context) {
this.context = context;
}
/**
* Set up binary data to en/decrypt
*
* @param is
* InputStream to get the data from
*/
public void setBlob(InputStream is) {
Log.d(Constants.TAG, "setBlob() called");
// 1. get the new contentUri
ContentResolver cr = context.getContentResolver();
Uri contentUri = cr.insert(Uri.parse(BLOB_URI), new ContentValues());
// 2. insert binary data
OutputStream os = null;
try {
os = cr.openOutputStream(contentUri, "w");
} catch (Exception e) {
Log.e(Constants.TAG, "... exception on setBlob", e);
}
byte[] buffer = new byte[8];
int len = 0;
try {
while ((len = is.read(buffer)) != -1) {
os.write(buffer, 0, len);
}
Log.d(Constants.TAG, "... write finished, now closing");
os.close();
} catch (Exception e) {
Log.e(Constants.TAG, "... error on writing buffer", e);
}
// mArgs.putString("BLOB", contentUri.toString());
}
/**
* Get the binary result
*
* <p>
* This gets your binary result. It only works if you called {@link #setBlob(InputStream)}
* before.
*
* If you did not call encrypt nor decrypt, this will be the same data as you inputed.
* </p>
*
* @return InputStream of the binary data which was en/decrypted
*
* @see #setBlob(InputStream)
* @see #getResult()
*/
public InputStream getBlobResult() {
// if (mArgs.containsKey("BLOB")) {
ContentResolver cr = context.getContentResolver();
InputStream in = null;
try {
// in = cr.openInputStream(Uri.parse(mArgs.getString("BLOB")));
} catch (Exception e) {
Log.e(Constants.TAG, "Could not return blob in result", e);
}
return in;
// } else {
// return null;
// }
}
}
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