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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 com.android.settings.vpn2;
import java.util.Arrays;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.Context;
import android.content.DialogInterface;
import android.net.IConnectivityManager;
import android.os.Bundle;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.security.Credentials;
import android.security.KeyStore;
import android.util.Log;
import android.widget.Toast;
import com.android.internal.net.LegacyVpnInfo;
import com.android.internal.net.VpnConfig;
import com.android.internal.net.VpnProfile;
import com.android.settings.R;
/**
* Fragment wrapper around a {@link ConfigDialog}.
*/
public class ConfigDialogFragment extends DialogFragment implements
DialogInterface.OnClickListener {
private static final String TAG_CONFIG_DIALOG = "vpnconfigdialog";
private static final String TAG = "ConfigDialogFragment";
private static final String ARG_PROFILE = "profile";
private static final String ARG_EDITING = "editing";
private static final String ARG_EXISTS = "exists";
private final IConnectivityManager mService = IConnectivityManager.Stub.asInterface(
ServiceManager.getService(Context.CONNECTIVITY_SERVICE));
private boolean mUnlocking = false;
public static void show(VpnSettings parent, VpnProfile profile, boolean edit, boolean exists) {
if (!parent.isAdded()) return;
Bundle args = new Bundle();
args.putParcelable(ARG_PROFILE, profile);
args.putBoolean(ARG_EDITING, edit);
args.putBoolean(ARG_EXISTS, exists);
final ConfigDialogFragment frag = new ConfigDialogFragment();
frag.setArguments(args);
frag.setTargetFragment(parent, 0);
frag.show(parent.getFragmentManager(), TAG_CONFIG_DIALOG);
}
@Override
public void onResume() {
super.onResume();
// Check KeyStore here, so others do not need to deal with it.
if (!KeyStore.getInstance().isUnlocked()) {
if (!mUnlocking) {
// Let us unlock KeyStore. See you later!
Credentials.getInstance().unlock(getActivity());
} else {
// We already tried, but it is still not working!
dismiss();
}
mUnlocking = !mUnlocking;
return;
}
// Now KeyStore is always unlocked. Reset the flag.
mUnlocking = false;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Bundle args = getArguments();
VpnProfile profile = (VpnProfile) args.getParcelable(ARG_PROFILE);
boolean editing = args.getBoolean(ARG_EDITING);
boolean exists = args.getBoolean(ARG_EXISTS);
return new ConfigDialog(getActivity(), this, profile, editing, exists);
}
@Override
public void onClick(DialogInterface dialogInterface, int button) {
ConfigDialog dialog = (ConfigDialog) getDialog();
VpnProfile profile = dialog.getProfile();
if (button == DialogInterface.BUTTON_POSITIVE) {
// Update KeyStore entry
KeyStore.getInstance().put(Credentials.VPN + profile.key, profile.encode(),
KeyStore.UID_SELF, KeyStore.FLAG_ENCRYPTED);
// Flush out old version of profile
disconnect(profile);
// If we are not editing, connect!
if (!dialog.isEditing()) {
try {
connect(profile);
} catch (RemoteException e) {
Log.e(TAG, "Failed to connect", e);
}
}
} else if (button == DialogInterface.BUTTON_NEUTRAL) {
// Disable profile if connected
disconnect(profile);
// Delete from KeyStore
KeyStore keyStore = KeyStore.getInstance();
keyStore.delete(Credentials.VPN + profile.key, KeyStore.UID_SELF);
// If this was the current lockdown VPN, clear it.
if (Arrays.equals(profile.key.getBytes(), keyStore.get(Credentials.LOCKDOWN_VPN))) {
keyStore.delete(Credentials.LOCKDOWN_VPN);
try {
mService.updateLockdownVpn();
} catch (RemoteException e) {
Log.e(TAG, "Failed to clear lockdown VPN configuration");
}
}
}
dismiss();
}
@Override
public void onCancel(DialogInterface dialog) {
dismiss();
super.onCancel(dialog);
}
private void connect(VpnProfile profile) throws RemoteException {
try {
mService.startLegacyVpn(profile);
} catch (IllegalStateException e) {
Toast.makeText(getActivity(), R.string.vpn_no_network, Toast.LENGTH_LONG).show();
}
}
private void disconnect(VpnProfile profile) {
try {
LegacyVpnInfo connected = mService.getLegacyVpnInfo(UserHandle.myUserId());
if (connected != null && profile.key.equals(connected.key)) {
mService.prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN,
UserHandle.myUserId());
}
} catch (RemoteException e) {
Log.e(TAG, "Failed to disconnect", e);
}
}
}
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