StatusUtil.java

/*
 *  Copyright (C) 2010-2017 Stichting Akvo (Akvo Foundation)
 *
 *  This file is part of Akvo Flow.
 *
 *  Akvo Flow 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.
 *
 *  Akvo Flow 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 Akvo Flow.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.akvo.flow.util;

import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Build;
import android.os.Environment;
import android.telephony.TelephonyManager;
import android.text.TextUtils;

import java.net.MalformedURLException;
import java.net.URL;

import timber.log.Timber;

/**
 * utilities for checking system state
 *
 * @author Christopher Fagiani
 */
public class StatusUtil {

    /**
     * gets the device's primary phone number
     *
     * @return
     */
    public static String getPhoneNumber(Context context) {
        TelephonyManager teleMgr = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);
        String number = null;
        if (teleMgr != null) {
            // On a GSM device, this will only work if the provider put the
            // number on the SIM card
            number = teleMgr.getLine1Number();
        }
        if (number == null || number.trim().length() == 0
                || number.trim().equalsIgnoreCase("null")
                || number.trim().equalsIgnoreCase("unknown")) {
            // If we can't get the phone number, use the MAC instead (only Android < 6.0)
            if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) {
                return "";
            }
            WifiManager wifiMgr = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
            if (wifiMgr != null) {
                // presumably if we don't have a cell connection, then we must
                // be connected by WIFI so this should work
                WifiInfo info = wifiMgr.getConnectionInfo();
                if (info != null) {
                    number = info.getMacAddress();
                }
            }
        }
        return number;
    }

    /**
     * gets the device's IMEI (MEID or ESN for CDMA phone)
     *
     * @return
     */
    public static String getImei(Context context) {
        TelephonyManager teleMgr = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);
        String number = null;
        if (teleMgr != null) {
            number = teleMgr.getDeviceId();
        }
        if (number == null) {
            number = "NO_IMEI";
        }
        return number;
    }

    public static boolean hasExternalStorage() {
        return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
    }

    /**
     * Get the application (FLOW instance) id.
     */
    public static String getApplicationId(Context context) {
        // Directly fetch the server from the properties file. A local serverBase found in the DB
        // will cause a permanent mismatch for all surveys, since XML files will contain original application
        String serverBase = new PropertyUtil(context.getResources())
                .getProperty(ConstantUtil.SERVER_BASE);
        try {
            // Match instance name from server base, for example:
            // https://akvoflow-X.appspot.com --> akvoflow-X
            String host = new URL(serverBase).getHost();
            if (!TextUtils.isEmpty(host) && host.contains(".")) {
                return host.substring(0, host.indexOf("."));
            }
        } catch (MalformedURLException e) {
            Timber.e("getApplicationId() - "+ e.getMessage());
        }
        return null;
    }

}