Android Open Source - snakk-ads-android-sample-app T V A S T Utils

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License

The source code is released under:

Copyright (c) 2012, Snakk! Media Group All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are m...

Java Source Code

package com.snakk.vastsdk;
//  w  w w  . j av  a  2  s.co  m
import android.content.Context;
import android.telephony.TelephonyManager;
import android.webkit.WebSettings;
import android.webkit.WebView;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.lang.reflect.Constructor;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.UUID;

public class TVASTUtils {

    private static String userAgent = null;

    public static String scrape(String resp, String start, String stop) {
        int offset, len;
        if ((offset = resp.indexOf(start)) < 0)
            return "";
        if ((len = resp.indexOf(stop, offset + start.length())) < 0)
            return "";
        return resp.substring(offset + start.length(), len);
    }

    public static String md5(String data) {
        try {
            MessageDigest digester = MessageDigest.getInstance("MD5");
            digester.update(data.getBytes());
            byte[] messageDigest = digester.digest();
            return TVASTUtils.byteArrayToHexString(messageDigest);
        } catch (NoSuchAlgorithmException e) {
        }
        return null;
    }

    public static String byteArrayToHexString(byte[] array) {
        StringBuffer hexString = new StringBuffer();
        for (byte b : array) {
            int intVal = b & 0xff;
            if (intVal < 0x10)
                hexString.append("0");
            hexString.append(Integer.toHexString(intVal));
        }
        return hexString.toString();
    }

    public static String getUserAgentString(Context context) {
        if (userAgent == null) {
            try {
                Constructor<WebSettings> constructor = WebSettings.class.getDeclaredConstructor(
                        Context.class, WebView.class);
                constructor.setAccessible(true);
                try {
                    WebSettings settings = constructor.newInstance(context, null);
                    userAgent = settings.getUserAgentString();
                } finally {
                    constructor.setAccessible(false);
                }
            } catch (Exception e) {
                userAgent = new WebView(context).getSettings().getUserAgentString();
            }
        }
        return userAgent;
    }

    private static String sID = null;
    private static final String INSTALLATION = "INSTALLATION";

    public synchronized static String id(Context context) {
        if (sID == null) {
            File installation = new File(context.getFilesDir(), INSTALLATION);
            try {
                if (!installation.exists())
                    writeInstallationFile(installation);
                sID = readInstallationFile(installation);
            } catch (Exception e) {
                // throw new RuntimeException(e);
                sID = "1234567890";
            }
        }
        return sID;
    }

    private static String readInstallationFile(File installation) throws IOException {
        RandomAccessFile f = new RandomAccessFile(installation, "r");
        byte[] bytes = new byte[(int) f.length()];
        f.readFully(bytes);
        f.close();
        return new String(bytes);
    }

    private static void writeInstallationFile(File installation) throws IOException {
        FileOutputStream out = new FileOutputStream(installation);
        String id = UUID.randomUUID().toString();
        out.write(id.getBytes());
        out.close();
    }

    public static String getDeviceId(Context context) {
        // Interesting discussion about getting a DeviceId
        // http://stackoverflow.com/questions/2785485/is-there-a-unique-android-device-id
        try {
            TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
            String deviceId = tm.getDeviceId();
            if (deviceId == null) {
                deviceId = TVASTUtils.id(context);
            }
//      return Utils.md5(deviceId);
            return deviceId;
        } catch (SecurityException e) {
            return "unknown";
        }
        // An alternate implementation that doesn't require the READ_PHONE_STATE permission
//        String deviceId = Secure.getString(context.getContentResolver(), Secure.ANDROID_ID);
//        if(deviceId != null) {
//          deviceId = Utils.md5(deviceId);
//        }
//    
//        return deviceId;
    }

    public static String getDeviceIdMD5(Context context) {
        String udid = getDeviceId(context);
        if (udid != "unknown") {
            udid = TVASTUtils.md5(udid);
        }
        return udid;
    }

    public static String getCarrier(Context context) {
        TelephonyManager manager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        return manager.getNetworkOperatorName();
    }
}

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