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1
17
18 package org.apache.james.transport.matchers;
19
20 import org.apache.mailet.GenericMatcher;
21 import org.apache.mailet.Mail;
22 import org.apache.mailet.MailAddress;
23
24 import java.lang.NumberFormatException  ;
25
26 import java.util.Collection ;
27 import java.util.StringTokenizer ;
28
29 import javax.mail.*;
30 import javax.mail.internet.*;
31
32
50 public class CompareNumericHeaderValue extends GenericMatcher {
51
52 private String headerName = null;
53
54 private int comparisonOperator;
55 private final static int LT = -2;
56 private final static int LE = -1;
57 private final static int EQ = 0;
58 private final static int GE = +1;
59 private final static int GT = +2;
60
61 private Double headerValue;
62
63 public void init() throws MessagingException {
64 StringTokenizer st = new StringTokenizer (getCondition(), " \t", false);
65 if (st.hasMoreTokens()) {
66 headerName = st.nextToken().trim();
67 }
68 else {
69 throw new MessagingException("Missing headerName");
70 }
71 if (st.hasMoreTokens()) {
72 String comparisonOperatorString = st.nextToken().trim();
73 if (comparisonOperatorString.equals("<")
74 || comparisonOperatorString.equals("LT")) {
75 comparisonOperator = LT;
76 }
77 else if (comparisonOperatorString.equals("<=")
78 || comparisonOperatorString.equals("=<")
79 || comparisonOperatorString.equals("LE")) {
80 comparisonOperator = LE;
81 }
82 else if (comparisonOperatorString.equals("==")
83 || comparisonOperatorString.equals("=")
84 || comparisonOperatorString.equals("EQ")) {
85 comparisonOperator = EQ;
86 }
87 else if (comparisonOperatorString.equals(">=")
88 || comparisonOperatorString.equals("=>")
89 || comparisonOperatorString.equals("GE")) {
90 comparisonOperator = GE;
91 }
92 else if (comparisonOperatorString.equals(">")
93 || comparisonOperatorString.equals("GT")) {
94 comparisonOperator = GT;
95 }
96 else {
97 throw new MessagingException("Bad comparisonOperator: \"" + comparisonOperatorString + "\"");
98 }
99 }
100 else {
101 throw new MessagingException("Missing comparisonOperator");
102 }
103 if (st.hasMoreTokens()) {
104 String headerValueString = st.nextToken().trim();
105 try {
106 headerValue = Double.valueOf(headerValueString);
107 }
108 catch (NumberFormatException nfe) {
109 throw new MessagingException("Bad header comparison value: \""
110 + headerValueString + "\"", nfe);
111 }
112 }
113 else {
114 throw new MessagingException("Missing headerValue threshold");
115 }
116 }
117
118 public Collection match(Mail mail) throws MessagingException {
119 if (headerName == null) {
120 throw new IllegalStateException ("Null headerName");
122 }
123
124 MimeMessage message = (MimeMessage) mail.getMessage();
125
126 String [] headerArray = message.getHeader(headerName);
127 if (headerArray != null && headerArray.length > 0) {
128 try {
129 int comparison = Double.valueOf(headerArray[0].trim()).compareTo(headerValue);
130 switch (comparisonOperator) {
131 case LT:
132 if (comparison < 0) {
133 return mail.getRecipients();
134 }
135 break;
136 case LE:
137 if (comparison <= 0) {
138 return mail.getRecipients();
139 }
140 break;
141 case EQ:
142 if (comparison == 0) {
143 return mail.getRecipients();
144 }
145 break;
146 case GE:
147 if (comparison >= 0) {
148 return mail.getRecipients();
149 }
150 break;
151 case GT:
152 if (comparison > 0) {
153 return mail.getRecipients();
154 }
155 break;
156 default:
157 throw new IllegalStateException ("Unknown comparisonOperator" + comparisonOperator);
159 }
160 }
161 catch (NumberFormatException nfe) {
162 throw new MessagingException("Bad header value found in message: \"" + headerArray[0] + "\"", nfe);
163 }
164 }
165
166 return null;
167 }
168 }
169 |
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