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;
35 import java.util.Arrays;
36 import java.util.Iterator;
37 import java.util.List;
39 import mir.entity.Entity;
40 import mir.session.Request;
44 * A description of a regular expression filter.
46 public class RegularExpressionFilterType extends AbstractFilterType {
47 private boolean exactMatch;
48 private boolean caseSensitive;
49 private int fieldKind;
50 private List selectedFields;
52 public static final int ENTITY_FIELDS = 0;
53 public static final int REQUEST_HEADERS = 2;
55 public RegularExpressionFilterType(String aName) {
56 this(aName, false, false, null);
59 public RegularExpressionFilterType(String aName, boolean aCaseSensitive, boolean anExactMatch, String[] aSelectedFields) {
60 this (aName, aCaseSensitive, anExactMatch, ENTITY_FIELDS, aSelectedFields);
63 public RegularExpressionFilterType(String aName, boolean aCaseSensitive, boolean anExactMatch, int aFieldKind, String[] aSelectedFields) {
66 fieldKind = aFieldKind;
68 caseSensitive = aCaseSensitive;
69 exactMatch = anExactMatch;
70 if (aSelectedFields==null)
71 selectedFields = null;
73 selectedFields = Arrays.asList(aSelectedFields);
77 public FilterInstance constructFilterInstance(final String anExpression) throws AbuseExc {
81 return new FilterInstance() {
83 public boolean test(Entity anEntity, Request aRequest) {
90 flags |= RE.REG_ICASE;
93 RE regularExpression = new RE(anExpression, flags);
97 if (selectedFields != null) {
98 j = selectedFields.iterator();
100 while (j.hasNext()) {
101 String fieldName = (String) j.next();
102 String field = aRequest.getHeader(fieldName);
105 if (field != null && regularExpression.isMatch(field)) {
110 if (field != null && regularExpression.getMatch(field) != null) {
118 if (selectedFields != null)
119 j = selectedFields.iterator();
121 j = anEntity.getFieldNames().iterator();
123 while (j.hasNext()) {
124 String field = anEntity.getFieldValue( (String) j.next());
127 if (field != null && regularExpression.isMatch(field)) {
132 if (field != null && regularExpression.getMatch(field) != null) {
139 catch (Throwable t) {
144 public String status() {
149 catch (Throwable t) {
150 throw new AbuseExc("Invalid expression: " + t.getMessage());