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002 * Licensed to the Apache Software Foundation (ASF) under one *
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005 * regarding copyright ownership. The ASF licenses this file *
006 * to you under the Apache License, Version 2.0 (the *
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008 * with the License. You may obtain a copy of the License at *
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010 * http://www.apache.org/licenses/LICENSE-2.0 *
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015 * KIND, either express or implied. See the License for the *
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019
020 package org.apache.james.jspf.terms;
021
022 import org.apache.james.jspf.core.DNSLookupContinuation;
023 import org.apache.james.jspf.core.MacroExpand;
024 import org.apache.james.jspf.core.MacroExpandEnabled;
025 import org.apache.james.jspf.core.SPFCheckEnabled;
026 import org.apache.james.jspf.core.SPFChecker;
027 import org.apache.james.jspf.core.SPFCheckerExceptionCatcher;
028 import org.apache.james.jspf.core.SPFSession;
029 import org.apache.james.jspf.core.SPFTermsRegexps;
030 import org.apache.james.jspf.core.exceptions.NeutralException;
031 import org.apache.james.jspf.core.exceptions.NoneException;
032 import org.apache.james.jspf.core.exceptions.PermErrorException;
033 import org.apache.james.jspf.core.exceptions.TempErrorException;
034
035 /**
036 * This class represent the redirect modifier
037 *
038 */
039 public class RedirectModifier extends GenericModifier implements
040 SPFCheckEnabled, MacroExpandEnabled {
041
042 private final class ExpandedChecker implements SPFChecker {
043
044 /**
045 * @see org.apache.james.jspf.core.SPFChecker#checkSPF(org.apache.james.jspf.core.SPFSession)
046 */
047 public DNSLookupContinuation checkSPF(SPFSession spfData)
048 throws PermErrorException, NoneException,
049 TempErrorException, NeutralException {
050 String host = getHost();
051
052 // throws a PermErrorException that we can pass
053 // through
054 host = macroExpand.expand(host, spfData,
055 MacroExpand.DOMAIN);
056
057 spfData.setCurrentDomain(host);
058
059 spfData.pushChecker(spfChecker);
060 return null;
061 }
062 }
063
064 private final class CleanupChecker implements SPFChecker, SPFCheckerExceptionCatcher {
065
066 /**
067 * @see org.apache.james.jspf.core.SPFChecker#checkSPF(org.apache.james.jspf.core.SPFSession)
068 */
069 public DNSLookupContinuation checkSPF(SPFSession spfData)
070 throws PermErrorException, TempErrorException,
071 NeutralException, NoneException {
072 // After the redirect we should not use the
073 // explanation from the orginal record
074 spfData.setIgnoreExplanation(true);
075 return null;
076 }
077
078 /**
079 * @see org.apache.james.jspf.core.SPFCheckerExceptionCatcher#onException(java.lang.Exception, org.apache.james.jspf.core.SPFSession)
080 */
081 public void onException(Exception exception, SPFSession session)
082 throws PermErrorException, NoneException,
083 TempErrorException, NeutralException {
084
085 session.setIgnoreExplanation(true);
086
087 // remove every checker until the initialized one
088
089 if (exception instanceof NeutralException) {
090 throw new PermErrorException(
091 "included checkSPF returned NeutralException");
092
093 } else if (exception instanceof NoneException) {
094 // no spf record assigned to the redirect domain
095 throw new PermErrorException(
096 "included checkSPF returned NoneException");
097 } else if (exception instanceof PermErrorException){
098 throw (PermErrorException) exception;
099 } else if (exception instanceof TempErrorException){
100 throw (TempErrorException) exception;
101 } else if (exception instanceof RuntimeException){
102 throw (RuntimeException) exception;
103 } else {
104 throw new IllegalStateException(exception.getMessage());
105 }
106 }
107 }
108
109 /**
110 * ABNF: redirect = "redirect" "=" domain-spec
111 */
112 public static final String REGEX = "[rR][eE][dD][iI][rR][eE][cC][tT]"
113 + "\\=" + SPFTermsRegexps.DOMAIN_SPEC_REGEX;
114
115 private SPFChecker spfChecker;
116
117 private MacroExpand macroExpand;
118
119 private SPFChecker cleanupChecker = new CleanupChecker();
120
121 private SPFChecker expandedChecker = new ExpandedChecker();
122
123 /**
124 * Set the host which should be used for redirection and set it in SPF1Data
125 * so it can be accessed easy later if needed
126 *
127 * @param spfData
128 * The SPF1Data which should used
129 * @return the result of this processing
130 * @throws PermErrorException
131 * if an error is in the redirect modifier
132 * @throws TempErrorException
133 * if an DNS problem accurred
134 * @throws NoneException
135 * @throws NeutralException
136 */
137 protected DNSLookupContinuation checkSPFLogged(SPFSession spfData)
138 throws PermErrorException, TempErrorException, NeutralException,
139 NoneException {
140 // the redirect modifier is used only when we had no previous matches
141 if (spfData.getCurrentResult() == null) {
142
143 // update currentDepth
144 spfData.increaseCurrentDepth();
145
146 spfData.pushChecker(cleanupChecker);
147
148 spfData.pushChecker(expandedChecker);
149 return macroExpand.checkExpand(getHost(), spfData, MacroExpand.DOMAIN);
150 }
151 return null;
152 }
153
154 /**
155 * @see java.lang.Object#toString()
156 */
157 public String toString() {
158 return "redirect=" + getHost();
159 }
160
161 /**
162 * @see org.apache.james.jspf.core.SPFCheckEnabled#enableSPFChecking(org.apache.james.jspf.core.SPFChecker)
163 */
164 public void enableSPFChecking(SPFChecker checker) {
165 this.spfChecker = checker;
166 }
167
168 /**
169 * @see org.apache.james.jspf.core.MacroExpandEnabled#enableMacroExpand(org.apache.james.jspf.core.MacroExpand)
170 */
171 public void enableMacroExpand(MacroExpand macroExpand) {
172 this.macroExpand = macroExpand;
173 }
174
175 }