133 lines
4.3 KiB
Java
133 lines
4.3 KiB
Java
/*
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* Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.ui.adapter;
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import java.io.BufferedInputStream;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.List;
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import org.spongycastle.openpgp.PGPKeyRing;
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import org.spongycastle.openpgp.PGPObjectFactory;
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import org.spongycastle.openpgp.PGPUtil;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.util.InputData;
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import org.sufficientlysecure.keychain.util.Log;
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import org.sufficientlysecure.keychain.util.PositionAwareInputStream;
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import android.content.Context;
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import android.support.v4.content.AsyncTaskLoader;
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public class ImportKeysListLoader extends AsyncTaskLoader<AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>> {
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Context mContext;
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InputData mInputData;
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ArrayList<ImportKeysListEntry> data = new ArrayList<ImportKeysListEntry>();
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AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> entryListWrapper;
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public ImportKeysListLoader(Context context, InputData inputData) {
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super(context);
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this.mContext = context;
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this.mInputData = inputData;
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}
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@Override
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public AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> loadInBackground() {
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entryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(data, null);
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if (mInputData == null) {
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Log.e(Constants.TAG, "Input data is null!");
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return entryListWrapper;
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}
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generateListOfKeyrings(mInputData);
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return entryListWrapper;
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}
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@Override
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protected void onReset() {
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super.onReset();
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// Ensure the loader is stopped
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onStopLoading();
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}
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@Override
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protected void onStartLoading() {
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forceLoad();
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}
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@Override
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protected void onStopLoading() {
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cancelLoad();
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}
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@Override
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public void deliverResult(AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> data) {
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super.deliverResult(data);
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}
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/**
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* Reads all PGPKeyRing objects from input
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*
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* @param keyringBytes
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* @return
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*/
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private void generateListOfKeyrings(InputData inputData) {
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PositionAwareInputStream progressIn = new PositionAwareInputStream(
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inputData.getInputStream());
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// need to have access to the bufferedInput, so we can reuse it for the possible
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// PGPObject chunks after the first one, e.g. files with several consecutive ASCII
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// armor blocks
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BufferedInputStream bufferedInput = new BufferedInputStream(progressIn);
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try {
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// read all available blocks... (asc files can contain many blocks with BEGIN END)
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while (bufferedInput.available() > 0) {
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InputStream in = PGPUtil.getDecoderStream(bufferedInput);
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PGPObjectFactory objectFactory = new PGPObjectFactory(in);
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// go through all objects in this block
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Object obj;
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while ((obj = objectFactory.nextObject()) != null) {
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Log.d(Constants.TAG, "Found class: " + obj.getClass());
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if (obj instanceof PGPKeyRing) {
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PGPKeyRing newKeyring = (PGPKeyRing) obj;
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addToData(newKeyring);
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} else {
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Log.e(Constants.TAG, "Object not recognized as PGPKeyRing!");
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}
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}
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}
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} catch (Exception e) {
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Log.e(Constants.TAG, "Exception on parsing key file!", e);
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}
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}
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private void addToData(PGPKeyRing keyring) {
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ImportKeysListEntry item = new ImportKeysListEntry(keyring);
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data.add(item);
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}
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}
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