OOBDFileHandler.java

import java.io.*;
import java.net.*;
import java.util.zip.*;
import java.util.Vector;
import java.util.Enumeration;
import java.util.regex.*;

public class OOBDFileHandler {

// all about Proxies and URLs in Java can be found here: http://www.rgagnon.com/javadetails/java-0085.html

    static String downloadFileName="";
    static String FilelistContent="";
    public static boolean download(String urlString, String outputFile) {
        try {
            System.setProperty("java.net.useSystemProxies", "true"); // use system proxy settings
            URL url = new URL(urlString);
            URLConnection urconn = null;
            urconn = url.openConnection();
            InputStream isr = urconn.getInputStream();
            FileOutputStream os= new FileOutputStream(outputFile);
            System.out.println("..is downloading.");
            byte[] buf = new byte[1024];
            int recvlen = 0;
            while (recvlen != -1) {
                recvlen = isr.read(buf) ;
                if (recvlen>0) {
                    os.write(buf, 0, recvlen);
                }
            }
            os.close();
            isr.close();
            System.out.println("download has completed.");
            downloadFileName=outputFile;
            return true;

        } catch (Exception e) {
            e.printStackTrace();
            downloadFileName="";
            return false;
        }
    }

    public static Vector<String> getFilelist(String hardwareID, int Revision) {
        if (downloadFileName=="") {
            return null;
        }
        try {
            ZipFile zipFile=new ZipFile(downloadFileName);
            Enumeration<? extends ZipEntry> entries = zipFile.entries();
            Vector<String> res=new Vector<String>();
            while(entries.hasMoreElements() ) {
                ZipEntry zipEntry = (ZipEntry)entries.nextElement();
                String fullPath =zipEntry.toString();
                String fileName ="";
                System.out.println("Zip:"+zipEntry.toString());
                if (fullPath.matches(".*filelist$")) {
                    System.out.println("filelist found");
                    // get filelist entry
                    try {
                        ZipEntry zipEntryFilelist=zipFile.getEntry(fullPath);
                        long size=zipEntryFilelist.getSize();
                        byte[] buffer= new byte[(int) size];
                        int bytes_read = zipFile.getInputStream(zipEntryFilelist).read(buffer); //read filelist into buffer
                        zipFile.getInputStream(zipEntryFilelist).close();
                        FilelistContent = new String(buffer, 0, bytes_read);
                        System.out.println("Filelist content:\n"+FilelistContent);
                        Matcher matcher = Pattern.compile( "(export FWBIN=)(.+)\\n" ).matcher( FilelistContent );
                        if (matcher.find()) {
                            System.out.println("prefered Firmware: " + matcher.group(2));
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                    }

                }
                //start to evaluate the file name
                //first, get the filename only
                Matcher matcher = Pattern.compile( "[^/]+$" ).matcher( fullPath );
                if (matcher.find()) {
                    fileName=matcher.group(); //filename without path
                    System.out.println("fileName:"+fileName);
                    Matcher matcher2 = Pattern.compile( "(OOBD_FW_)(\\w+)_(\\d+)\\.bin" ).matcher( fileName );
                    if (matcher2.find()) { // is it a file name matching the firmware binary file naming convention?
                        System.out.println("Hardware: " + matcher2.group(2));
                        System.out.println("Revision: " + matcher2.group(3));

                        res.add(zipEntry.toString());
                    }
                }
            }
            zipFile.close();
            return res;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }

    }


}