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19  
20  package org.apache.james.jspf.policies;
21  
22  import org.apache.james.jspf.core.DNSLookupContinuation;
23  import org.apache.james.jspf.core.SPF1Constants;
24  import org.apache.james.jspf.core.SPFSession;
25  import org.apache.james.jspf.core.SPF1Record;
26  import org.apache.james.jspf.core.SPFChecker;
27  import org.apache.james.jspf.core.exceptions.NeutralException;
28  import org.apache.james.jspf.core.exceptions.NoneException;
29  import org.apache.james.jspf.core.exceptions.PermErrorException;
30  import org.apache.james.jspf.core.exceptions.TempErrorException;
31  
32  /**
33   * Sets the result to NEUTRAL if no directive is found 
34   */
35  public class NeutralIfNotMatchPolicy implements PolicyPostFilter {
36      
37      private final class NeutralIfNotMatchModifier implements SPFChecker {
38          
39          /**
40           * @see org.apache.james.jspf.core.SPFChecker#checkSPF(org.apache.james.jspf.core.SPFSession)
41           */
42          public DNSLookupContinuation checkSPF(SPFSession spfData) throws PermErrorException, TempErrorException, NeutralException {
43              // If no match was found set the result to neutral
44              if (spfData.getCurrentResult() == null) {
45                  spfData.setCurrentResult(SPF1Constants.NEUTRAL);
46              }
47              return null;
48          }
49  
50          public String toString() {
51              return "defaultresult";
52          }
53      }
54  
55      /**
56       * @see org.apache.james.jspf.policies.PolicyPostFilter#getSPFRecord(java.lang.String, org.apache.james.jspf.core.SPF1Record)
57       */
58      public SPF1Record getSPFRecord(String currentDomain, SPF1Record spfRecord) throws PermErrorException, TempErrorException, NoneException, NeutralException {
59          if (spfRecord == null) return null;
60          // Set the result to NEUTRAL if at least a directive is present and it didn't match
61          // Maybe we should simply append a "?all" at the end, as modifier
62          if (spfRecord.getDirectives().size() > 0) {
63              spfRecord.getModifiers().add(new NeutralIfNotMatchModifier());
64          }
65          return spfRecord;
66      }
67  }