Package de.measite.minidns.util

Class NameUtil

  • public class NameUtil
extends java.lang.Object
    Utilities related to internationalized domain names and dns name handling.

    • Constructor Summary

      Constructors 
      Constructor Description
      NameUtil()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static boolean idnEquals​(java.lang.String name1, java.lang.String name2)
      Check if two internationalized domain names are equal, possibly causing a serialization of both domain names.
      static java.lang.String parse​(byte[] data, int offset, java.util.HashSet<java.lang.Integer> jumps)
      Parse a domain name starting at the given offset.
      static java.lang.String parse​(java.io.DataInputStream dis, byte[] data)
      Parse a domain name starting at the current offset and moving the input stream pointer past this domain name (even if cross references occure).
      static int size​(java.lang.String name)
      Retrieve the rough binary length of a string (length + 2 bytes length prefix).
      static byte[] toByteArray​(java.lang.String name)
      Serialize a domain name under IDN rules.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • NameUtil

        public NameUtil()

    • Method Detail

      • size

        public static int size​(java.lang.String name)
        Retrieve the rough binary length of a string (length + 2 bytes length prefix).
        Parameters:
        name - The name string.
        Returns:
        The binary size of the string (length + 2).

      • idnEquals

        public static boolean idnEquals​(java.lang.String name1,
                                java.lang.String name2)
        Check if two internationalized domain names are equal, possibly causing a serialization of both domain names.
        Parameters:
        name1 - The first domain name.
        name2 - The second domain name.
        Returns:
        True if both domain names are the same.

      • toByteArray

        public static byte[] toByteArray​(java.lang.String name)
                          throws java.io.IOException
        Serialize a domain name under IDN rules.
        Parameters:
        name - The domain name.
        Returns:
        The binary domain name representation.
        Throws:
        java.io.IOException - Should never happen.

      • parse

        public static java.lang.String parse​(java.io.DataInputStream dis,
                                     byte[] data)
                              throws java.io.IOException
        Parse a domain name starting at the current offset and moving the input stream pointer past this domain name (even if cross references occure).
        Parameters:
        dis - The input stream.
        data - The raw data (for cross references).
        Returns:
        The domain name string.
        Throws:
        java.io.IOException - Should never happen.

      • parse

        public static java.lang.String parse​(byte[] data,
                                     int offset,
                                     java.util.HashSet<java.lang.Integer> jumps)
        Parse a domain name starting at the given offset.
        Parameters:
        data - The raw data.
        offset - The offset.
        jumps - The list of jumps (by now).
        Returns:
        The parsed domain name.
        Throws:
        java.lang.IllegalStateException - on cycles.