| /* |
| * Copyright (C) 2017 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.wifi.tether; |
| |
| import android.content.Context; |
| import android.net.wifi.WifiConfiguration; |
| import androidx.preference.EditTextPreference; |
| import androidx.preference.Preference; |
| import android.text.TextUtils; |
| |
| import com.android.settings.R; |
| import com.android.settings.widget.ValidatedEditTextPreference; |
| import com.android.settings.wifi.WifiUtils; |
| |
| import java.util.UUID; |
| |
| public class WifiTetherPasswordPreferenceController extends WifiTetherBasePreferenceController |
| implements ValidatedEditTextPreference.Validator { |
| |
| private static final String PREF_KEY = "wifi_tether_network_password"; |
| |
| private String mPassword; |
| |
| public WifiTetherPasswordPreferenceController(Context context, |
| OnTetherConfigUpdateListener listener) { |
| super(context, listener); |
| } |
| |
| @Override |
| public String getPreferenceKey() { |
| return PREF_KEY; |
| } |
| |
| @Override |
| public void updateDisplay() { |
| final WifiConfiguration config = mWifiManager.getWifiApConfiguration(); |
| if (config == null || (config.getAuthType() == WifiConfiguration.KeyMgmt.WPA2_PSK |
| && TextUtils.isEmpty(config.preSharedKey))) { |
| mPassword = generateRandomPassword(); |
| } else { |
| mPassword = config.preSharedKey; |
| } |
| ((ValidatedEditTextPreference) mPreference).setValidator(this); |
| ((ValidatedEditTextPreference) mPreference).setIsPassword(true); |
| ((ValidatedEditTextPreference) mPreference).setIsSummaryPassword(true); |
| updatePasswordDisplay((EditTextPreference) mPreference); |
| } |
| |
| @Override |
| public boolean onPreferenceChange(Preference preference, Object newValue) { |
| mPassword = (String) newValue; |
| updatePasswordDisplay((EditTextPreference) mPreference); |
| mListener.onTetherConfigUpdated(); |
| return true; |
| } |
| |
| /** |
| * This method returns the current password if it is valid for the indicated security type. If |
| * the password currently set is invalid it will forcefully set a random password that is valid. |
| * |
| * @param securityType The security type for the password. |
| * @return The current password if it is valid for the indicated security type. A new randomly |
| * generated password if it is not. |
| */ |
| public String getPasswordValidated(int securityType) { |
| // don't actually overwrite unless we get a new config in case it was accidentally toggled. |
| if (securityType == WifiConfiguration.KeyMgmt.NONE) { |
| return ""; |
| } else if (!isTextValid(mPassword)) { |
| mPassword = generateRandomPassword(); |
| updatePasswordDisplay((EditTextPreference) mPreference); |
| } |
| return mPassword; |
| } |
| |
| public void updateVisibility(int securityType) { |
| mPreference.setVisible(securityType != WifiConfiguration.KeyMgmt.NONE); |
| } |
| |
| @Override |
| public boolean isTextValid(String value) { |
| return WifiUtils.isHotspotPasswordValid(value); |
| } |
| |
| private static String generateRandomPassword() { |
| String randomUUID = UUID.randomUUID().toString(); |
| //first 12 chars from xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx |
| return randomUUID.substring(0, 8) + randomUUID.substring(9, 13); |
| } |
| |
| private void updatePasswordDisplay(EditTextPreference preference) { |
| ValidatedEditTextPreference pref = (ValidatedEditTextPreference) preference; |
| pref.setText(mPassword); |
| if (!TextUtils.isEmpty(mPassword)) { |
| pref.setIsSummaryPassword(true); |
| pref.setSummary(mPassword); |
| pref.setVisible(true); |
| } else { |
| pref.setIsSummaryPassword(false); |
| pref.setSummary(R.string.wifi_hotspot_no_password_subtext); |
| pref.setVisible(false); |
| } |
| } |
| } |