Add support for updating backports correctly

src/main/java/kcauldron/KCauldron.java

@@ -7,11 +7,12 @@ import java.util.Enumeration;
 import java.util.Properties;
 
 public class KCauldron {
-	private static String sCurrentVersion;
-
-	public static String getCurrentVersion() {
-		if (sCurrentVersion != null)
-			return sCurrentVersion;
+	private static boolean sManifestParsed = false;
+	
+	private static void parseManifest() {
+		if (sManifestParsed) return;
+		sManifestParsed = true;
+		
 		try {
 			Enumeration<URL> resources = KCauldron.class.getClassLoader()
 					.getResources("META-INF/MANIFEST.MF");
@@ -25,23 +26,47 @@ public class KCauldron {
 				    String jarFilePath = path.substring(path.indexOf(":") + 1, path.indexOf("!"));
 				    jarFilePath = URLDecoder.decode(jarFilePath, "UTF-8");
 				    sServerLocation = new File(jarFilePath);
-					return sCurrentVersion = version;
+				    
+					sCurrentVersion = version;
+					sBranch = manifest.getProperty("KCauldron-Branch");
+					sChannel = manifest.getProperty("KCauldron-Channel");
 				}
 				manifest.clear();
 			}
 		} catch (Exception e) {
 			e.printStackTrace();
 		}
-		return sCurrentVersion = "UNKNOWN";
+
+	}
+	
+	private static String sCurrentVersion;
+
+	public static String getCurrentVersion() {
+		parseManifest();
+		return sCurrentVersion;
 	}
 
 	private static File sServerLocation;
 
 	public static File getServerLocation() {
-		getCurrentVersion();
+		parseManifest();
 		return sServerLocation;
 	}
 	
+	private static String sBranch;
+	
+	public static String getBranch() {
+		parseManifest();
+		return sBranch;
+	}
+	
+	private static String sChannel;
+	
+	public static String getChannel() {
+		parseManifest();
+		return sChannel;
+	}
+	
 	public static File sNewServerLocation;
 	public static String sNewServerVersion;
 	public static boolean sUpdateInProgress;

src/main/java/kcauldron/updater/KCauldronUpdater.java

@@ -38,7 +38,7 @@ public class KCauldronUpdater implements Runnable {
 						+ version + ") is up to date");
 			}
 		}
-		
+
 		@Override
 		public void error(Throwable t) {
 			super.error(t);
@@ -117,8 +117,9 @@ public class KCauldronUpdater implements Runnable {
 			}
 			HttpUriRequest request = RequestBuilder
 					.get()
-					.setUri("https://prok.pw/repo/pw/prok/KCauldron/"
-							+ mVersion + "/" + filename)
+					.setUri("https://prok.pw/repo/pw/prok/"
+							+ KCauldron.getChannel() + "/" + mVersion + "/"
+							+ filename)
 					.addParameter("hostname", server.getHostname())
 					.addParameter("port", "" + server.getPort()).build();
 			HttpResponse response = HttpClientBuilder.create()

src/main/java/kcauldron/updater/KVersionRetriever.java

@@ -71,8 +71,10 @@ public class KVersionRetriever implements Runnable, UncaughtExceptionHandler {
 		if (DEBUG)
 			sLogger.info("Requesting for new version...");
 		try {
-			HttpUriRequest request = RequestBuilder.get()
-					.setUri("https://prok.pw/version/pw.prok/KCauldron")
+			HttpUriRequest request = RequestBuilder
+					.get()
+					.setUri("https://prok.pw/version/pw.prok/"
+							+ KCauldron.getChannel())
 					.addParameter("hostname", sServer.getHostname())
 					.addParameter("port", "" + sServer.getPort()).build();
 			HttpResponse response = HttpClientBuilder.create()