150 lines
5 KiB
Java
150 lines
5 KiB
Java
/*
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* Copyright (C) 2012-2014 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 android.content.Context;
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import android.support.v4.content.AsyncTaskLoader;
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import android.support.v4.util.LongSparseArray;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.keyimport.ImportKeysListEntry;
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import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
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import org.sufficientlysecure.keychain.pgp.UncachedKeyRing;
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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 java.io.BufferedInputStream;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Iterator;
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public class ImportKeysListLoader
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extends AsyncTaskLoader<AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>> {
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public static class NoValidKeysException extends Exception {
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}
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public static class NonPgpPartException extends Exception {
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private int mCount;
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public NonPgpPartException(int count) {
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this.mCount = count;
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}
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public int getCount() {
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return mCount;
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}
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}
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final Context mContext;
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final InputData mInputData;
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ArrayList<ImportKeysListEntry> mData = new ArrayList<ImportKeysListEntry>();
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LongSparseArray<ParcelableKeyRing> mParcelableRings = new LongSparseArray<ParcelableKeyRing>();
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AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> mEntryListWrapper;
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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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// This has already been loaded! nvm any further, just return
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if (mEntryListWrapper != null) {
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return mEntryListWrapper;
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}
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mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(mData, 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 mEntryListWrapper;
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}
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generateListOfKeyrings(mInputData);
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return mEntryListWrapper;
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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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public LongSparseArray<ParcelableKeyRing> getParcelableRings() {
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return mParcelableRings;
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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 inputData
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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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// parse all keyrings
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Iterator<UncachedKeyRing> it = UncachedKeyRing.fromStream(bufferedInput);
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while (it.hasNext()) {
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UncachedKeyRing ring = it.next();
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ImportKeysListEntry item = new ImportKeysListEntry(getContext(), ring);
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mData.add(item);
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mParcelableRings.put(item.hashCode(), new ParcelableKeyRing(ring.getEncoded()));
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}
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} catch (IOException e) {
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Log.e(Constants.TAG, "IOException on parsing key file! Return NoValidKeysException!", e);
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NoValidKeysException e1 = new NoValidKeysException();
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mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>
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(mData, e1);
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} catch (Exception e) {
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Log.e(Constants.TAG, "Other Exception on parsing key file!", e);
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mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(mData, e);
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}
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}
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}
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