2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
31 package mircoders.abuse;
34 import mir.entity.Entity;
35 import mir.session.Request;
37 import java.util.Arrays;
38 import java.util.Iterator;
39 import java.util.List;
43 * A description of a regular expression filter.
45 public class RegularExpressionFilterType extends AbstractFilterType {
46 private boolean exactMatch;
47 private boolean caseSensitive;
48 private int fieldKind;
49 private List selectedFields;
51 public static final int ENTITY_FIELDS = 0;
52 public static final int REQUEST_HEADERS = 2;
54 public RegularExpressionFilterType(String aName) {
55 this(aName, false, false, null);
58 public RegularExpressionFilterType(String aName, boolean aCaseSensitive, boolean anExactMatch, String[] aSelectedFields) {
59 this (aName, aCaseSensitive, anExactMatch, ENTITY_FIELDS, aSelectedFields);
62 public RegularExpressionFilterType(String aName, boolean aCaseSensitive, boolean anExactMatch, int aFieldKind, String[] aSelectedFields) {
65 fieldKind = aFieldKind;
67 caseSensitive = aCaseSensitive;
68 exactMatch = anExactMatch;
69 if (aSelectedFields==null)
70 selectedFields = null;
72 selectedFields = Arrays.asList(aSelectedFields);
76 public FilterInstance constructFilterInstance(final String anExpression) throws AbuseExc {
80 return new FilterInstance() {
82 public boolean test(Entity anEntity, Request aRequest) {
89 flags |= RE.REG_ICASE;
92 RE regularExpression = new RE(anExpression, flags);
96 if (selectedFields != null) {
97 j = selectedFields.iterator();
100 String fieldName = (String) j.next();
101 String field = aRequest.getHeader(fieldName);
104 if (field != null && regularExpression.isMatch(field)) {
109 if (field != null && regularExpression.getMatch(field) != null) {
117 if (selectedFields != null)
118 j = selectedFields.iterator();
120 j = anEntity.getFieldNames().iterator();
122 while (j.hasNext()) {
123 String field = anEntity.getFieldValue( (String) j.next());
126 if (field != null && regularExpression.isMatch(field)) {
131 if (field != null && regularExpression.getMatch(field) != null) {
138 catch (Throwable t) {
143 public String status() {
148 catch (Throwable t) {
149 throw new AbuseExc("Invalid expression: " + t.getMessage());