fixes to yacyURL - more exceptions in case that urls are strange

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5657 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/yacy/yacyURL.java

@@ -92,7 +92,7 @@ public class yacyURL implements Serializable {
                 }
                 path = "/";
             } else {
-                host = url.substring(p + 3, q);
+                host = url.substring(p + 3, q).trim();
                 if ((r = host.indexOf('@')) < 0) {
                     userInfo = null;
                 } else {
@@ -101,7 +101,8 @@ public class yacyURL implements Serializable {
                 }
                 path = url.substring(q);
             }
-            
+            if (host.length() < 4) throw new MalformedURLException("host too short: '" + host + "'");
+            if (host.indexOf('&') >= 0) throw new MalformedURLException("invalid '&' in host");
             path = resolveBackpath(path);
             identPort(url, (protocol.equals("http") ? 80 : ((protocol.equals("https")) ? 443 : ((protocol.equals("ftp")) ? 21 : -1))));
             identRef();