24  */

    24  */

    25 

    25 

    26 package jdk.dns.client.internal;

    26 package jdk.dns.client.internal;

    27 

    27 

    28 import jdk.dns.client.ex.DnsCommunicationException;

    28 import jdk.dns.client.ex.DnsCommunicationException;

    30 

    30 

    31 import java.io.IOException;

    31 import java.io.IOException;

    32 import java.nio.charset.StandardCharsets;

    32 import java.nio.charset.StandardCharsets;

    33 

    33 

    34 

    34 

    46      */

    46      */

    47     public static final int TYPE_A = 1;

    47     public static final int TYPE_A = 1;

    48     public static final int TYPE_CNAME = 5;

    48     public static final int TYPE_CNAME = 5;

    49     public static final int TYPE_AAAA = 28;

    49     public static final int TYPE_AAAA = 28;

    50     public static final int TYPE_PTR = 12;

    50     public static final int TYPE_PTR = 12;

    52 

    52 

    53     private static final int TYPE_NS = 2;

    53     private static final int TYPE_NS = 2;

    54     private static final int TYPE_SOA = 6;

    54     private static final int TYPE_SOA = 6;

    55     private static final int TYPE_HINFO = 13;

    55     private static final int TYPE_HINFO = 13;

    56     private static final int TYPE_MX = 15;

    56     private static final int TYPE_MX = 15;

    57     private static final int TYPE_TXT = 16;

    57     private static final int TYPE_TXT = 16;

    58     private static final int TYPE_SRV = 33;

    58     private static final int TYPE_SRV = 33;

    59     private static final int TYPE_NAPTR = 35;

    59     private static final int TYPE_NAPTR = 35;

    61 

    60 

    62     /*

    61     /*

    63      * Mapping from resource record type codes to type name strings.

    62      * Mapping from resource record type codes to type name strings.

    64      */

    63      */

    65     private static final String[] rrTypeNames = {

    64     private static final String[] rrTypeNames = {

   181 

   180 

   182     private static String valueToName(int val, String[] names) {

   181     private static String valueToName(int val, String[] names) {

   183         String name = null;

   182         String name = null;

   184         if ((val > 0) && (val < names.length)) {

   183         if ((val > 0) && (val < names.length)) {

   185             name = names[val];

   184             name = names[val];

   187             name = "*";

   186             name = "*";

   188         }

   187         }

   189         if (name == null) {

   188         if (name == null) {

   190             name = Integer.toString(val);

   189             name = Integer.toString(val);

   191         }

   190         }

   194 

   193 

   195     private static int nameToValue(String name, String[] names) {

   194     private static int nameToValue(String name, String[] names) {

   196         if (name.isEmpty()) {

   195         if (name.isEmpty()) {

   197             return -1;                          // invalid name

   196             return -1;                          // invalid name

   198         } else if (name.equals("*")) {

   197         } else if (name.equals("*")) {

   200         }

   199         }

   201         if (Character.isDigit(name.charAt(0))) {

   200         if (Character.isDigit(name.charAt(0))) {

   202             try {

   201             try {

   203                 return Integer.parseInt(name);

   202                 return Integer.parseInt(name);

   204             } catch (NumberFormatException e) {

   203             } catch (NumberFormatException e) {

   341                         assert pos >= Header.HEADER_SIZE;

   340                         assert pos >= Header.HEADER_SIZE;

   342                     }

   341                     }

   343                 } else

   342                 } else

   344                     throw new IOException("Invalid label type: " + typeAndLen);

   343                     throw new IOException("Invalid label type: " + typeAndLen);

   345             }

   344             }

   347             DnsCommunicationException ce = new DnsCommunicationException(

   346             DnsCommunicationException ce = new DnsCommunicationException(

   348                     "DNS error: malformed packet");

   347                     "DNS error: malformed packet");

   349             ce.initCause(e);

   348             ce.initCause(e);

   350             throw ce;

   349             throw ce;

   351         }

   350         }