added checks to protect peers from wrong seeds

see also: http://www.yacy-forum.de/viewtopic.php?p=19249#19249

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1939 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/net/natLib.java

@@ -125,19 +125,20 @@ public class natLib {
 
     //TODO: This is not IPv6 compatible
     public static boolean isProper(String ip) {
-	plasmaSwitchboard sb=plasmaSwitchboard.getSwitchboard();
-        if (sb == null) return false;
-        String yacyDebugMode = sb.getConfig("yacyDebugMode", "false");
-	if(yacyDebugMode.equals("true")){
-		return true;
-	}
-    //support for staticIP
-    if(sb.getConfig("staticIP", "").equals(ip)){
-        return true;
-    }
-	if (ip == null) return false;
-	if (ip.indexOf(":") >= 0) return false; // ipv6...
-		return ( isNotLocal(ip)) && (isIP(ip) );
+        plasmaSwitchboard sb=plasmaSwitchboard.getSwitchboard();
+        if (sb != null) {
+            String yacyDebugMode = sb.getConfig("yacyDebugMode", "false");
+            if (yacyDebugMode.equals("true")) {
+                return true;
+            }
+            // support for staticIP
+            if (sb.getConfig("staticIP", "").equals(ip)) {
+                return true;
+            }
+        }
+        if (ip == null) return false;
+        if (ip.indexOf(":") >= 0) return false; // ipv6...
+        return (isNotLocal(ip)) && (isIP(ip));
     }
 
     private static int retrieveOptions() {

source/de/anomic/yacy/yacyPeerActions.java

@@ -400,6 +400,7 @@ public class yacyPeerActions {
     }
 
     public boolean peerArrival(yacySeed peer, boolean direct) {
+        if (peer == null) return false;
         boolean res = connectPeer(peer, direct);
         // perform all actions if peer is effective new
         if (res) {
@@ -410,6 +411,7 @@ public class yacyPeerActions {
     }
     
     public void peerDeparture(yacySeed peer) {
+        if (peer == null) return;
         //System.out.println("PEER DEPARTURE:" + peer.toString());
         disconnectPeer(peer);
         // perform all actions
@@ -418,6 +420,7 @@ public class yacyPeerActions {
     }
     
     public void peerPing(yacySeed peer) {
+        if (peer == null) return;
         // this is called only if the peer has junior status
         seedDB.addPotential(peer);
         // perform all actions

source/de/anomic/yacy/yacySeed.java

@@ -605,7 +605,9 @@ public class yacySeed {
         if (seed == null) { return null; }
         final HashMap dna = serverCodings.string2map(seed);
         final String hash = (String) dna.remove("Hash");
-        return new yacySeed(hash, dna);
+        yacySeed resultSeed = new yacySeed(hash, dna);
+        if (resultSeed.isProper() == null) return resultSeed;
+        return null;
     }
 
     public String toString() {