Getting geo coordinates from old google maps API using Cell Tower ID, Location Area Code, Mobile Country Code, and Mobile Network Code

gistfile1.java

 /**
  * Shamelessly extracted from 
  * https://code.google.com/p/mwop/source/browse/sandbox/server/mwop-server/src/com/mwop/server/cellID/CellIDResolver.java?r=18
  */
 public static Coordinate transform(int cellID, int lac, int mcc, int mnc) throws IOException {
        URL providerAddress = new URL("http://www.google.com/glm/mmap");
        HttpURLConnection connection = (HttpURLConnection) providerAddress.openConnection();
        connection.setRequestMethod("POST");
        connection.setDoOutput(true);
        connection.connect();
        
        OutputStream outputStream = connection.getOutputStream();
        writePlainData(outputStream, cellID, lac, mcc, mnc);

        InputStream inputStream = connection.getInputStream();
        DataInputStream dataInputStream = new DataInputStream(inputStream);

        dataInputStream.readShort();
        dataInputStream.readByte();

        int code = dataInputStream.readInt();
        if (code == 0) {
            double lat = (double) dataInputStream.readInt() / 1000000D;
            double lon = (double) dataInputStream.readInt() / 1000000D;
            Coordinate coordinate = new Coordinate(lon, lat);
            return coordinate;
        } else {
            return null;
        }
    }
    
protected static void writePlainData(OutputStream out, int cellID, int lac, int mcc, int mnc) throws IOException {
        DataOutputStream dos = new DataOutputStream(out);

        dos.writeShort(0x0E); // Fct code

        dos.writeInt(0); // requesting 8 byte session
        dos.writeInt(0);

        dos.writeShort(0); // country code string
        dos.writeShort(0); // client descriptor string
        dos.writeShort(0); // version tag string

        dos.writeByte(0x1B); // Fct code

        dos.writeInt(0); // MNC?
        dos.writeInt(0); // MCC?
        dos.writeInt(3); // Radio Access Type (3=GSM, 5=UMTS)

        dos.writeShort(0); // length of provider name

        // provider name string
        dos.writeInt(cellID); // CID
        dos.writeInt(lac); // LAC
        dos.writeInt(mnc); // MNC
        dos.writeInt(mcc); // MCC
        dos.writeInt(-1); // always -1
        dos.writeInt(0); // rx level

        dos.flush();
    }