001/** 002 * 003 * Copyright 2020 Florian Schmaus 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.jivesoftware.smack.util.rce; 018 019import org.jivesoftware.smack.util.ToStringUtil; 020 021import org.jxmpp.jid.DomainBareJid; 022import org.minidns.dnsname.DnsName; 023 024public abstract class RemoteConnectionEndpointLookupFailure { 025 026 private final String description; 027 private final Exception exception; 028 029 public RemoteConnectionEndpointLookupFailure(String description, Exception exception) { 030 this.description = description; 031 this.exception = exception; 032 } 033 034 public final String getDescription() { 035 return description; 036 } 037 038 public final Exception getException() { 039 return exception; 040 } 041 042 public String getErrorMessage() { 043 return description + " because: " + exception; 044 } 045 046 private transient String toStringCache; 047 048 @Override 049 public String toString() { 050 if (toStringCache == null) { 051 toStringCache = ToStringUtil.builderFor(RemoteConnectionEndpointLookupFailure.class) 052 .addValue("description", description) 053 .addValue("exception", exception) 054 .build(); 055 } 056 return toStringCache; 057 } 058 059 public static class DnsLookupFailure extends RemoteConnectionEndpointLookupFailure { 060 private final DnsName dnsName; 061 062 public DnsLookupFailure(DnsName dnsName, Exception exception) { 063 super("DNS lookup exception for " + dnsName, exception); 064 this.dnsName = dnsName; 065 } 066 067 public DnsName getDnsName() { 068 return dnsName; 069 } 070 } 071 072 public static class HttpLookupFailure extends RemoteConnectionEndpointLookupFailure { 073 private final DomainBareJid host; 074 075 public HttpLookupFailure(DomainBareJid host, Exception exception) { 076 super("Http lookup exception for " + host, exception); 077 this.host = host; 078 } 079 080 public DomainBareJid getHost() { 081 return host; 082 } 083 } 084}