001/* 002 * Copyright 2015-2020 the original author or authors 003 * 004 * This software is licensed under the Apache License, Version 2.0, 005 * the GNU Lesser General Public License version 2 or later ("LGPL") 006 * and the WTFPL. 007 * You may choose either license to govern your use of this software only 008 * upon the condition that you accept all of the terms of either 009 * the Apache License 2.0, the LGPL 2.1+ or the WTFPL. 010 */ 011package org.minidns; 012 013import java.io.IOException; 014 015import org.minidns.dnsmessage.DnsMessage; 016import org.minidns.dnsqueryresult.DnsQueryResult; 017 018public abstract class MiniDnsException extends IOException { 019 /** 020 * 021 */ 022 private static final long serialVersionUID = 1L; 023 024 protected MiniDnsException(String message) { 025 super(message); 026 } 027 028 public static class IdMismatch extends MiniDnsException { 029 030 /** 031 * 032 */ 033 private static final long serialVersionUID = 1L; 034 035 private final DnsMessage request; 036 private final DnsMessage response; 037 038 public IdMismatch(DnsMessage request, DnsMessage response) { 039 super(getString(request, response)); 040 assert request.id != response.id; 041 this.request = request; 042 this.response = response; 043 } 044 045 public DnsMessage getRequest() { 046 return request; 047 } 048 049 public DnsMessage getResponse() { 050 return response; 051 } 052 053 private static String getString(DnsMessage request, DnsMessage response) { 054 return "The response's ID doesn't matches the request ID. Request: " + request.id + ". Response: " + response.id; 055 } 056 } 057 058 public static class NullResultException extends MiniDnsException { 059 060 /** 061 * 062 */ 063 private static final long serialVersionUID = 1L; 064 065 private final DnsMessage request; 066 067 public NullResultException(DnsMessage request) { 068 super("The request yielded a 'null' result while resolving."); 069 this.request = request; 070 } 071 072 public DnsMessage getRequest() { 073 return request; 074 } 075 } 076 077 public static class ErrorResponseException extends MiniDnsException { 078 079 /** 080 * 081 */ 082 private static final long serialVersionUID = 1L; 083 084 private final DnsMessage request; 085 private final DnsQueryResult result; 086 087 public ErrorResponseException(DnsMessage request, DnsQueryResult result) { 088 super("Received " + result.response.responseCode + " error response\n" + result); 089 this.request = request; 090 this.result = result; 091 } 092 093 public DnsMessage getRequest() { 094 return request; 095 } 096 097 public DnsQueryResult getResult() { 098 return result; 099 } 100 } 101 102 public static class NoQueryPossibleException extends MiniDnsException { 103 104 /** 105 * 106 */ 107 private static final long serialVersionUID = 1L; 108 109 private final DnsMessage request; 110 111 public NoQueryPossibleException(DnsMessage request) { 112 super("No DNS server could be queried"); 113 this.request = request; 114 } 115 116 public DnsMessage getRequest() { 117 return request; 118 } 119 } 120}