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/*
* Copyright (C) 2014 Daniel Albert
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.helper;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Messenger;
import org.sufficientlysecure.keychain.keyimport.HkpKeyserver;
import org.sufficientlysecure.keychain.keyimport.ImportKeysListEntry;
import org.sufficientlysecure.keychain.keyimport.Keyserver;
import org.sufficientlysecure.keychain.provider.KeychainContract;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.service.KeychainIntentService;
import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
import org.sufficientlysecure.keychain.util.Log;
import java.util.ArrayList;
import java.util.List;
public class KeyUpdateHelper {
public void updateAllKeys(Context context, KeychainIntentServiceHandler finishedHandler) {
UpdateTask updateTask = new UpdateTask(context, finishedHandler);
updateTask.execute();
}
public ImportKeysListEntry getKeyByFingerprint(Context context, String fingerprint) {
String[] servers = Preferences.getPreferences(context).getKeyServers();
if (servers != null && servers.length != 0) {
try {
HkpKeyserver hkp = new HkpKeyserver(servers[0]);
for (ImportKeysListEntry key : hkp.search("0x" + fingerprint)) {
if (fingerprint.equals(key.getFingerprintHex())) {
return key;
}
}
} catch (Keyserver.QueryNeedsRepairException e) {
} catch (Keyserver.QueryFailedException e) {
}
}
return null;
}
private class UpdateTask extends AsyncTask<Void, Void, Void> {
private Context mContext;
private KeychainIntentServiceHandler mHandler;
public UpdateTask(Context context, KeychainIntentServiceHandler handler) {
this.mContext = context;
this.mHandler = handler;
}
@Override
protected Void doInBackground(Void... voids) {
ProviderHelper providerHelper = new ProviderHelper(mContext);
List<ImportKeysListEntry> keys = new ArrayList<ImportKeysListEntry>();
// Load all the fingerprints in the database and prepare to import them
for(String fprint : providerHelper.getAllFingerprints(KeychainContract.KeyRings.buildUnifiedKeyRingsUri())) {
ImportKeysListEntry key = getKeyByFingerprint(mContext, fprint);
if(key != null) {
keys.add(key);
}
}
// Start the service and update the keys
Intent importIntent = new Intent(mContext, KeychainIntentService.class);
importIntent.setAction(KeychainIntentService.ACTION_DOWNLOAD_AND_IMPORT_KEYS);
Bundle importData = new Bundle();
importData.putParcelableArrayList(KeychainIntentService.DOWNLOAD_KEY_LIST,
new ArrayList<ImportKeysListEntry>(keys));
importIntent.putExtra(KeychainIntentService.EXTRA_DATA, importData);
importIntent.putExtra(KeychainIntentService.EXTRA_MESSENGER, new Messenger(mHandler));
mContext.startService(importIntent);
return null;
}
}
}
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