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19  
20  package org.apache.james.transport.matchers;
21  
22  import org.apache.mailet.GenericRecipientMatcher;
23  import org.apache.mailet.MailAddress;
24  import org.apache.oro.text.regex.MalformedPatternException;
25  import org.apache.oro.text.regex.Pattern;
26  import org.apache.oro.text.regex.Perl5Compiler;
27  import org.apache.oro.text.regex.Perl5Matcher;
28  
29  import javax.mail.MessagingException;
30  
31  /***
32   * <P>Matches recipients whose address matches a regular expression.</P>
33   * <P>Is equivalent to the {@link SenderIsRegex} matcher but matching on the recipient.</P>
34   * <P>Configuration string: a regular expression.</P>
35   * <PRE><CODE>
36   * &lt;mailet match=&quot;RecipientIsRegex=&lt;regular-expression&gt;&quot; class=&quot;&lt;any-class&gt;&quot;&gt;
37   * </CODE></PRE>
38   * <P>The example below will match any recipient in the format user@log.anything</P>
39   * <PRE><CODE>
40   * &lt;mailet match=&quot;RecipientIsRegex=(.*)@log\.(.*)&quot; class=&quot;&lt;any-class&gt;&quot;&gt;
41   * &lt;/mailet&gt;
42   * </CODE></PRE>
43   *
44   * @version CVS $Revision: 494012 $ $Date: 2007-01-08 10:23:58 +0000 (lun, 08 gen 2007) $
45   */
46  
47  public class RecipientIsRegex extends GenericRecipientMatcher {
48      Pattern pattern   = null;
49  
50      public void init() throws javax.mail.MessagingException {
51          String patternString = getCondition();
52          if (patternString == null) {
53              throw new MessagingException("Pattern is missing");
54          }
55          
56          patternString = patternString.trim();
57          Perl5Compiler compiler = new Perl5Compiler();
58          try {
59              pattern = compiler.compile(patternString, Perl5Compiler.READ_ONLY_MASK);
60          } catch(MalformedPatternException mpe) {
61              throw new MessagingException("Malformed pattern: " + patternString, mpe);
62          }
63      }
64  
65      public boolean matchRecipient(MailAddress recipient) {
66          String myRecipient = recipient.toString();
67          Perl5Matcher matcher  = new Perl5Matcher();
68          if (matcher.matches(myRecipient, pattern)){
69              return true;
70          } else {
71              return false;
72          }
73      }
74  }