Thread: Client Auto-Updater

What the fuck is with all those imports? Are they necessary?

Heres a much cleaner Updater: Call it UpdateCache.java

Code:

import java.net.URL;
import java.net.URLConnection;
import java.util.zip.*;
import sign.signlink;
import java.io.*;
import javax.swing.JOptionPane;

public class UpdateCache implements Runnable {

	public static final String ZIP_URL = "http://YOUR_SITE.com/cache.zip";
	public static final String VERSION_URL = "http://YOUR_SITE.com/cacheVersion.txt";
	public static final String VERSION_FILE = sign.signlink.findcachedir()+"cacheVersion.dat";
	private client client;
	client frame;
    public UpdateCache(client client) {
                this.client = client;
    }
		
    private void drawLoadingText(int amount, String text) {
                client.drawLoadingText(amount, text);
    }
	
	public double getCurrentVersion(){
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(VERSION_FILE)));
			return Double.parseDouble(br.readLine());
		} catch (Exception e) {
			return 0.1;
		}
	}
	
	public double getNewestVersion(){
		try {
			URL tmp = new URL(VERSION_URL);
			BufferedReader br = new BufferedReader(new InputStreamReader(tmp.openStream()));
			return Double.parseDouble(br.readLine());
		} catch (Exception e) {
			handleException(e);
			return -1;
		}
	}
	
	private void handleException(Exception e){
		StringBuilder strBuff = new StringBuilder();
		strBuff.append("Please Screenshot this message, and send it to an admin!\r\n\r\n");
        StringBuilder append = strBuff.append(e.getClass().getName()).append(" \"").append(e.getMessage()).append("\"\r\n");
		for(StackTraceElement s : e.getStackTrace())
			strBuff.append(s.toString()).append("\r\n");
		alert("Exception [" + e.getClass().getSimpleName() + "]",strBuff.toString(),true);
	}
	
	private void alert(String msg){
		alert("Message",msg,false);
	}
	
	private void alert(String title,String msg,boolean error){
		JOptionPane.showMessageDialog(null,
			   msg,
			   title,
			    (error ? JOptionPane.ERROR_MESSAGE : JOptionPane.PLAIN_MESSAGE));
	}
	
	@Override
	public void run() {
	drawLoadingText(0, "Checking Versions");
		try{
		double newest = getNewestVersion();
		if(newest > this.getCurrentVersion()){
			int n = JOptionPane.showConfirmDialog(
				    null,
				    "There is an update to version " + newest + "\n" +
					"Would you like to update?",
				    "Current version: "+ getCurrentVersion(),
				    JOptionPane.YES_NO_OPTION);
			if(n == 0){
				updateClient();
				drawLoadingText(0, "Cache has been updated, please restart the client!");
				alert("Cache has been updated, please restart the client!");
				OutputStream out = new FileOutputStream(VERSION_FILE);
				out.write(String.valueOf(newest).getBytes());;
				System.exit(0);
			}else{
				alert(" Your client may not load correct " +
				getCurrentVersion());
				//System.exit(0);
			}
		}
		}catch(Exception e){
			handleException(e);
		}
	}
	
	private void updateClient() {
		File clientZip = downloadClient();
		if(clientZip != null){
		unZip(clientZip);
		}
	}
	
	private void unZip(File clientZip) {
		try {
			unZipFile(clientZip,new File(sign.signlink.findcachedir()));
			clientZip.delete();
		} catch (IOException e) {
			handleException(e);
		}
	}
	
	private void unZipFile(File zipFile,File outFile) throws IOException{
		ZipInputStream zin = new ZipInputStream(new BufferedInputStream(new FileInputStream(zipFile)));
		ZipEntry e;
		long max = 0;
		long curr = 0;
		while((e = zin.getNextEntry()) != null)
			max += e.getSize();
		zin.close();
		ZipInputStream in = new ZipInputStream(new BufferedInputStream(new FileInputStream(zipFile)));
		while((e = in.getNextEntry()) != null){
			if(e.isDirectory())
				new File(outFile,e.getName()).mkdirs();
			else{
				FileOutputStream out = new FileOutputStream(new File(outFile,e.getName()));
				byte[] b = new byte[1024];
				int len;
				while((len = in.read(b,0,b.length)) > -1){
					curr += len;
						out.write(b, 0, len);
						setUnzipPercent((int)((curr * 100) / max));
				}
				out.flush();
				out.close();
			}
		}
	}

	public int percent = 0;
	
	public void setDownloadPercent(int amount){
	        percent = amount;
			drawLoadingText(amount, "Downloading Cache" + " - " + amount + "%");
	}
	
	public int percent2 = 0;
	
	public void setUnzipPercent(int amount2){
	        percent2 = amount2;
			drawLoadingText(amount2, "Extracting Cache" + " - " + amount2 + "%");
	}

	private File downloadClient(){
		File ret = new File(signlink.findcachedir()+"cache.zip");
		try{
		OutputStream out = new FileOutputStream(ret);
		URLConnection conn = new URL(ZIP_URL).openConnection();
		InputStream in = conn.getInputStream();
		long max = conn.getContentLength();
		long curr = 0;
		byte[] b = new byte[1024];
		int len;
		while((len = in.read(b, 0, b.length)) > -1){
			out.write(b,0,len);
			curr += len;
			setDownloadPercent((int)((curr * 100) / max));
		}
		out.flush();
		out.close();
		in.close();
		return ret;
		}catch(Exception e){
			handleException(e);
				ret.delete();
			return null;
		}
	}
}

Open client.java and search
Code:

Code:

void startUp()

Under the first { add
Code:

Code:

new UpdateCache(this).run();

On your webhost make sure you have the cacheVersion.txt uploaded with the correct cache version.

I'm going to sound like a complete retard here, but how the fuck do I change the cache version?

I am stupid.

Originally Posted by Grievous

he's loading it from a site.

Well, I thought there should've been two ways.

I know it loads from the site, but ok.

But thanks guys.

Umm, this is a cache UPDATER not a DOWNLOADER right?
in your cachedownloader.java you should have the version number in there?
Just set them both as 1.
you'll have some files in your cache like "cacheversion1 or 2 or 3 ect" or somthing.
Delete those it'll create its own when it auto downloads.

Plus your not stupid dude, i'm here to help you

Originally Posted by Grievous

he's loading it from a site.

Actually no i'm not? it auto updates the first time it's downloaded.
But you need to set up the autodownloader for it to even get a version number?
lolol. As I said dude, its not a downloader, its an UPDATER.
if you want an auto downloader there are plenty of tutorials.
this will NOT work unless auto cache is set up.

Originally Posted by Oldskewl

Actually no i'm not? it auto updates the first time it's downloaded.
But you need to set up the autodownloader for it to even get a version number?
lolol. As I said dude, its not a downloader, its an UPDATER.
if you want an auto downloader there are plenty of tutorials.
this will NOT work unless auto cache is set up.

Thanks mate.

Mind checking my PM?