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/*
* Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
*
* 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.ui.dialog;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.Id;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.provider.KeychainContract;
import org.sufficientlysecure.keychain.provider.KeychainDatabase;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.util.Log;
import java.util.ArrayList;
public class DeleteKeyDialogFragment extends DialogFragment {
private static final String ARG_MESSENGER = "messenger";
private static final String ARG_DELETE_KEY_RING_ROW_IDS = "delete_file";
private static final String ARG_KEY_TYPE = "key_type";
public static final int MESSAGE_OKAY = 1;
public static final String MESSAGE_NOT_DELETED = "not_deleted";
private Messenger mMessenger;
/**
* Creates new instance of this delete file dialog fragment
*/
public static DeleteKeyDialogFragment newInstance(Messenger messenger, long[] keyRingRowIds,
int keyType) {
DeleteKeyDialogFragment frag = new DeleteKeyDialogFragment();
Bundle args = new Bundle();
args.putParcelable(ARG_MESSENGER, messenger);
args.putLongArray(ARG_DELETE_KEY_RING_ROW_IDS, keyRingRowIds);
args.putInt(ARG_KEY_TYPE, keyType);
frag.setArguments(args);
return frag;
}
/**
* Creates dialog
*/
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final FragmentActivity activity = getActivity();
mMessenger = getArguments().getParcelable(ARG_MESSENGER);
final long[] keyRingRowIds = getArguments().getLongArray(ARG_DELETE_KEY_RING_ROW_IDS);
final int keyType = getArguments().getInt(ARG_KEY_TYPE);
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setTitle(R.string.warning);
if (keyRingRowIds.length == 1) {
Uri dataUri;
if (keyType == Id.type.public_key) {
dataUri = KeychainContract.KeyRings.buildPublicKeyRingsUri(String.valueOf(keyRingRowIds[0]));
} else {
dataUri = KeychainContract.KeyRings.buildSecretKeyRingsUri(String.valueOf(keyRingRowIds[0]));
}
String userId = ProviderHelper.getUserId(activity, dataUri);
builder.setMessage(getString(
keyType == Id.type.public_key ? R.string.key_deletion_confirmation
: R.string.secret_key_deletion_confirmation, userId));
} else {
builder.setMessage(R.string.key_deletion_confirmation_multi);
}
builder.setIcon(R.drawable.ic_dialog_alert_holo_light);
builder.setPositiveButton(R.string.btn_delete, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
ArrayList<String> notDeleted = new ArrayList<String>();
if (keyType == Id.type.public_key) {
Uri queryUri = KeychainContract.KeyRings.buildPublicKeyRingsUri();
String[] projection = new String[]{
KeychainContract.KeyRings._ID, // 0
KeychainContract.KeyRings.MASTER_KEY_ID, // 1
KeychainContract.UserIds.USER_ID // 2
};
// make selection with all entries where _ID is one of the given row ids
String selection = KeychainDatabase.Tables.KEY_RINGS + "." +
KeychainContract.KeyRings._ID + " IN(";
String selectionIDs = "";
for (int i = 0; i < keyRingRowIds.length; i++) {
selectionIDs += "'" + String.valueOf(keyRingRowIds[i]) + "'";
if (i + 1 < keyRingRowIds.length) {
selectionIDs += ",";
}
}
selection += selectionIDs + ")";
Cursor cursor = activity.getContentResolver().query(queryUri, projection,
selection, null, null);
long rowId;
long masterKeyId;
String userId;
try {
while (cursor != null && cursor.moveToNext()) {
rowId = cursor.getLong(0);
masterKeyId = cursor.getLong(1);
userId = cursor.getString(2);
Log.d(Constants.TAG, "rowId: " + rowId + ", masterKeyId: " + masterKeyId
+ ", userId: " + userId);
// check if a corresponding secret key exists...
Cursor secretCursor = activity.getContentResolver().query(
KeychainContract.KeyRings
.buildSecretKeyRingsByMasterKeyIdUri(
String.valueOf(masterKeyId)),
null, null, null, null
);
if (secretCursor != null && secretCursor.getCount() > 0) {
notDeleted.add(userId);
} else {
// it is okay to delete this key, no secret key found!
ProviderHelper.deletePublicKeyRing(activity, rowId);
}
if (secretCursor != null) {
secretCursor.close();
}
}
} finally {
if (cursor != null) {
cursor.close();
}
}
} else {
for (long keyRowId : keyRingRowIds) {
ProviderHelper.deleteSecretKeyRing(activity, keyRowId);
}
}
dismiss();
if (notDeleted.size() > 0) {
Bundle data = new Bundle();
data.putStringArrayList(MESSAGE_NOT_DELETED, notDeleted);
sendMessageToHandler(MESSAGE_OKAY, data);
} else {
sendMessageToHandler(MESSAGE_OKAY, null);
}
}
});
builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
dismiss();
}
});
return builder.create();
}
/**
* Send message back to handler which is initialized in a activity
*
* @param what Message integer you want to send
*/
private void sendMessageToHandler(Integer what, Bundle data) {
Message msg = Message.obtain();
msg.what = what;
if (data != null) {
msg.setData(data);
}
try {
mMessenger.send(msg);
} catch (RemoteException e) {
Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
} catch (NullPointerException e) {
Log.w(Constants.TAG, "Messenger is null!", e);
}
}
}
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