:star:HEADmain

1 files changed, 244 insertions, 0 deletions

diff --git a/NET/worlds/network/DNSLookup.java b/NET/worlds/network/DNSLookup.java
new file mode 100644
index 0000000..026b641
--- /dev/null
+++ b/NET/worlds/network/DNSLookup.java
@@ -0,0 +1,244 @@
+/*     */ package NET.worlds.network;
+/*     */ 
+/*     */ import java.net.MalformedURLException;
+/*     */ import java.net.URL;
+/*     */ import java.net.UnknownHostException;
+/*     */ import java.util.Hashtable;
+/*     */ import java.util.StringTokenizer;
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ public class DNSLookup
+/*     */   implements Runnable
+/*     */ {
+/*     */   private static final int defaultTimeout = 30;
+/*  69 */   private static Hashtable<String, String[]> cache = new Hashtable();
+/*     */   
+/*     */   private String hostName;
+/*     */   
+/*     */   private String[] dottedNames;
+/*     */   
+/*     */   private int timeout;
+/*     */   
+/*     */ 
+/*     */   public static URL lookup(URL url)
+/*     */     throws MalformedURLException, UnknownHostException
+/*     */   {
+/*  81 */     return lookup(url, 30);
+/*     */   }
+/*     */   
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */   public static URL lookupAll(URL url)
+/*     */     throws MalformedURLException, UnknownHostException
+/*     */   {
+/*  90 */     return lookupAll(url, 30);
+/*     */   }
+/*     */   
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */   public static URL lookup(URL url, int timeout)
+/*     */     throws MalformedURLException, UnknownHostException
+/*     */   {
+/*  99 */     String hostName = url.getHost();
+/* 100 */     if (hostName == null) {
+/* 101 */       return url;
+/*     */     }
+/*     */     
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/* 113 */     return new URL(url.getProtocol(), hostName, url.getPort(), url
+/* 114 */       .getFile());
+/*     */   }
+/*     */   
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */   public static URL lookupAll(URL url, int timeout)
+/*     */     throws MalformedURLException, UnknownHostException
+/*     */   {
+/* 124 */     String hostName = url.getHost();
+/* 125 */     if (hostName == null) {
+/* 126 */       return url;
+/*     */     }
+/* 128 */     String[] addresses = lookupAll(hostName, timeout);
+/* 129 */     String hosts = "";
+/* 130 */     for (int i = 0; i < addresses.length; i++) {
+/* 131 */       if (i != 0)
+/* 132 */         hosts = hosts + ";";
+/* 133 */       hosts = hosts + addresses[i];
+/*     */     }
+/* 135 */     return new URL(url.getProtocol(), hosts, url.getPort(), url.getFile());
+/*     */   }
+/*     */   
+/*     */   public static String lookup(String hostName) throws UnknownHostException
+/*     */   {
+/* 140 */     return lookup(hostName, 30);
+/*     */   }
+/*     */   
+/*     */   public static String lookup(String hostName, int timeout)
+/*     */     throws UnknownHostException
+/*     */   {
+/* 146 */     if (isDotted(hostName))
+/* 147 */       return hostName;
+/* 148 */     return lookupAllCommon(hostName, timeout)[0];
+/*     */   }
+/*     */   
+/*     */   public static String[] lookupAll(String hostName)
+/*     */     throws UnknownHostException
+/*     */   {
+/* 154 */     return lookupAll(hostName, 30);
+/*     */   }
+/*     */   
+/*     */   public static String[] lookupAll(String hostName, int timeout)
+/*     */     throws UnknownHostException
+/*     */   {
+/* 160 */     if (isDotted(hostName)) {
+/* 161 */       String[] names = new String[1];
+/* 162 */       names[0] = hostName;
+/* 163 */       return names;
+/*     */     }
+/* 165 */     return lookupAllCommon(hostName, timeout);
+/*     */   }
+/*     */   
+/*     */ 
+/*     */ 
+/*     */ 
+/*     */   private static String[] lookupAllCommon(String hostName, int timeout)
+/*     */     throws UnknownHostException
+/*     */   {
+/* 174 */     String[] dotted = (String[])cache.get(hostName);
+/* 175 */     if (dotted == null) {
+/* 176 */       dotted = new DNSLookup(hostName, timeout).getDottedNames();
+/* 177 */       if (dotted == null)
+/* 178 */         throw new UnknownHostException(hostName);
+/* 179 */       cache.put(hostName, dotted);
+/*     */     }
+/*     */     
+/*     */ 
+/*     */ 
+/*     */ 
+/* 185 */     return dotted;
+/*     */   }
+/*     */   
+/*     */   private DNSLookup(String hostName, int timeout) {
+/* 189 */     this.hostName = hostName;
+/* 190 */     this.timeout = timeout;
+/* 191 */     if (timeout != 0) {
+/* 192 */       Thread t = new Thread(this);
+/* 193 */       t.setDaemon(true);
+/* 194 */       t.start();
+/*     */     } else {
+/* 196 */       run();
+/*     */     }
+/*     */   }
+/*     */   
+/*     */   public void run() {
+/* 201 */     this.dottedNames = gethostbyname(this.hostName);
+/* 202 */     if (this.timeout != 0) {
+/* 203 */       synchronized (this) {
+/* 204 */         notify();
+/*     */       }
+/*     */     }
+/*     */   }
+/*     */   
+/*     */   private synchronized String[] getDottedNames() {
+/* 210 */     if ((this.dottedNames == null) && (this.timeout != 0)) {
+/*     */       try {
+/* 212 */         wait(this.timeout * 1000);
+/*     */       }
+/*     */       catch (InterruptedException localInterruptedException) {}
+/*     */     }
+/* 216 */     return this.dottedNames;
+/*     */   }
+/*     */   
+/*     */ 
+/*     */   private static boolean isDotted(String name)
+/*     */   {
+/* 222 */     StringTokenizer tok = new StringTokenizer(name, ".");
+/* 223 */     if (tok.countTokens() != 4)
+/* 224 */       return false;
+/* 225 */     for (int i = 0; i < 4; i++) {
+/*     */       try {
+/* 227 */         int val = Integer.parseInt(tok.nextToken());
+/* 228 */         if ((val < 0) || (val > 255))
+/* 229 */           return false;
+/*     */       } catch (NumberFormatException nfe) {
+/* 231 */         return false;
+/*     */       }
+/*     */     }
+/* 234 */     return true;
+/*     */   }
+/*     */   
+/*     */   private static native String[] gethostbyname(String paramString);
+/*     */ }
+
+
+/* Location:              C:\Program Files (x86)\Worlds Inc\WorldsPlayer - Win7\lib\worlds.jar!\NET\worlds\network\DNSLookup.class
+ * Java compiler version: 6 (50.0)
+ * JD-Core Version:       0.7.1
+ */
\ No newline at end of file