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;
33 import mir.entity.Entity;
34 import mir.entity.adapter.EntityAdapter;
35 import mir.entity.adapter.EntityAdapterModel;
36 import mir.entity.adapter.EntityIteratorAdapter;
37 import mir.log.LoggerWrapper;
38 import mir.session.Request;
39 import mir.storage.DatabaseExc;
40 import mir.storage.DatabaseHelper;
41 import mircoders.global.MirGlobal;
42 import mircoders.storage.DatabaseFilter;
43 import mircoders.storage.DatabaseFilterGroup;
45 import java.util.ArrayList;
46 import java.util.Collections;
47 import java.util.Date;
48 import java.util.HashMap;
49 import java.util.Iterator;
50 import java.util.List;
52 /** The FilterEngine manages a list of all filters and filter groups.
53 * Use the testPosting() method to apply all filters on an
54 * Entity (for ex. an article or a comment)
56 public class FilterEngine {
57 private final Map filterTypes = new HashMap();
58 private final List filterTypeIds = new ArrayList();
60 private final List filterGroups = new ArrayList();
61 private final Map idToFilterGroup = new HashMap();
62 private final LoggerWrapper logger = new LoggerWrapper("Global.Abuse.FilterEngine");
63 private EntityAdapterModel model;
65 public FilterEngine(EntityAdapterModel aModel) {
67 Iterator i = MirGlobal.localizer().openPostings().getAntiAbuseFilterTypes().iterator();
69 FilterType filterType = (FilterType) i.next();
71 filterTypes.put(filterType.getName(), filterType);
72 filterTypeIds.add(filterType.getName());
76 throw new RuntimeException(t.getMessage());
84 /** applies all filters from all filter groups to an Entity.
85 * The entity may be, for example, an article, or a comment.
86 * It returns a filter that matches if it finds one, null otherwise
88 public synchronized Filter testPosting(Entity anEntity, Request aRequest) {
89 Iterator i = filterGroups.iterator();
91 FilterGroup group = (FilterGroup) i.next();
93 Iterator j = group.getFilters().iterator();
95 Filter filter = (Filter) j.next();
97 if (filter.test(anEntity, aRequest)) {
101 catch (Throwable t) {
102 logger.warn("Exception thrown while testing filter " + filter.getType() + " ( " + filter.getExpression() + ") " + t.toString());
110 public List getFilterTypes() {
112 List result = new ArrayList();
114 Iterator i = filterTypeIds.iterator();
115 while (i.hasNext()) {
116 String id = (String) i.next();
118 Map action = new HashMap();
119 action.put("resource", id);
120 action.put("identifier", id);
127 catch (Throwable t) {
128 throw new RuntimeException("can't get article actions: " + t.getMessage());
131 /** This class reflects a row of the filter_group
132 * database table. Filters groups allow you to organize
133 * your filters. For example: group1=spammer ,
136 public class FilterGroup {
137 private List filters;
138 private Entity entity;
139 private Map idToFilter;
141 public FilterGroup(Entity anEntity) {
142 this (anEntity, Collections.EMPTY_LIST);
145 public FilterGroup(Entity anEntity, List aFilters) {
147 filters = new ArrayList();
148 idToFilter = new HashMap();
149 Iterator i = aFilters.iterator();
151 while (i.hasNext()) {
152 Entity entity = (Entity) i.next();
154 Filter filter = new Filter(entity);
155 introduceFilter(filter);
162 public Entity getEntity() {
166 public EntityAdapter getEntityAdapter() {
167 return model.makeEntityAdapter("filterGroup", entity);
170 public List getFilterEntityAdapterList() {
171 List result = new ArrayList();
173 Iterator i = filters.iterator();
174 while (i.hasNext()) {
175 Filter filter = (Filter) i.next();
176 result.add(filter.getEntityAdapter());
182 public List getFilters() {
186 public Filter getFilterForId(String anId) {
187 Filter result = (Filter) idToFilter.get(anId);
189 throw new NullPointerException("No such filter");
195 private void introduceFilter(Filter aFilter) {
196 filters.add(aFilter);
197 idToFilter.put(aFilter.getEntity().getId(), aFilter);
200 private void removeFilter(Filter aFilter) {
201 filters.remove(aFilter);
202 idToFilter.remove(aFilter.getEntity().getId());
205 private void deleteFilter(String anId) {
206 Filter filter = getFilterForId(anId);
207 removeFilter(filter);
208 DatabaseFilter.getInstance().delete(anId);
211 public void populateFilterEntity(Entity anEntity, String aType, String anExpression,
212 String aComments, String aTag, String anArticleAction,
213 String aCommentAction) {
215 anEntity.setFieldValue("type", aType);
216 anEntity.setFieldValue("expression", anExpression);
217 anEntity.setFieldValue("comment", aComments);
218 anEntity.setFieldValue("tag", aTag);
219 anEntity.setFieldValue("articleaction", anArticleAction);
220 anEntity.setFieldValue("commentaction", aCommentAction);
223 public String updateFilter(String anId, String aType, String anExpression,
224 String aComments, String aTag, String anArticleAction,
225 String aCommentAction) {
228 getFilterTypeForId(aType).constructFilterInstance(anExpression);
231 return e.getMessage();
234 Entity entity = getFilterForId(anId).getEntity();
235 populateFilterEntity(entity, aType, anExpression, aComments, aTag,
236 anArticleAction, aCommentAction);
242 public String createFilter(String aType, String anExpression,
243 String aComments, String aTag, String anArticleAction,
244 String aCommentAction) throws DatabaseExc {
245 FilterInstance instance;
248 instance = getFilterTypeForId(aType).constructFilterInstance(anExpression);
251 return e.getMessage();
254 Entity entity = DatabaseFilter.getInstance().createNewEntity();
255 populateFilterEntity(entity, aType, anExpression, aComments, aTag,
256 anArticleAction, aCommentAction);
259 String priority = "1";
261 if (filters.size() > 0) {
263 String lastPriorityString = ((Filter) filters.get(filters.size()-1)).getEntity().getFieldValue("priority");
264 int lastPriority = Integer.parseInt(lastPriorityString);
265 priority = Integer.toString(lastPriority + 1);
267 catch (Exception e) {
271 entity.setFieldValue("priority", priority);
272 entity.setFieldValue("filter_group_id", getEntity().getId());
275 Filter filter = new Filter(entity, instance);
276 introduceFilter(filter);
281 public String moveFilterUp(String anId) {
282 Filter filter = getFilterForId(anId);
283 String priority = filter.getEntity().getFieldValue("priority");
284 int index = filters.indexOf(filter);
286 Filter filterBefore= (Filter) filters.remove(index-1);
287 filters.add(index, filterBefore);
288 filter.getEntity().setFieldValue("priority", filterBefore.getEntity().getFieldValue("priority"));
289 filterBefore.getEntity().setFieldValue("priority", priority);
290 filter.getEntity().update();
291 filterBefore.getEntity().update();
297 public String moveFilterToTop(String anId) {
298 Filter filter = getFilterForId(anId);
299 String priority = filter.getEntity().getFieldValue("priority");
300 int index = filters.indexOf(filter);
302 filters.remove(index);
303 Filter filterBefore= (Filter) filters.get(0);
304 filters.add(0, filter);
305 filter.getEntity().setFieldValue("priority", filterBefore.getEntity().getFieldValue("priority"));
306 filterBefore.getEntity().setFieldValue("priority", priority);
307 filter.getEntity().update();
308 filterBefore.getEntity().update();
314 public String moveFilterDown(String anId) {
315 Filter filter = getFilterForId(anId);
316 String priority = filter.getEntity().getFieldValue("priority");
317 int index = filters.indexOf(filter);
318 if (index<filters.size()-1) {
319 Filter filterAfter = (Filter) filters.remove(index+1);
320 filters.add(index, filterAfter);
321 filter.getEntity().setFieldValue("priority", filterAfter.getEntity().getFieldValue("priority"));
322 filterAfter.getEntity().setFieldValue("priority", priority);
323 filter.getEntity().update();
324 filterAfter.getEntity().update();
330 public String moveFilterToBottom(String anId) {
331 Filter filter = getFilterForId(anId);
332 String priority = filter.getEntity().getFieldValue("priority");
333 int index = filters.indexOf(filter);
334 if (index>=0 && index<filters.size()-1) {
335 filters.remove(index);
336 Filter filterBefore= (Filter) filters.get(filters.size()-1);
337 filters.add(filters.size(), filter);
338 filter.getEntity().setFieldValue("priority", filterBefore.getEntity().getFieldValue("priority"));
339 filterBefore.getEntity().setFieldValue("priority", priority);
340 filter.getEntity().update();
341 filterBefore.getEntity().update();
348 public String getName() {
349 return entity.getFieldValue("name");
353 /** This class reflects a row of the filter database table.
354 * To actually run a filter on data, use the test() method.
355 * This class will automatically retreive and use the correct
358 public class Filter {
359 private Entity entity;
360 private FilterInstance instance;
362 public Filter(Entity anEntity) throws AbuseExc {
363 this(anEntity, getFilterTypeForId(anEntity.getFieldValue("type")).constructFilterInstance(anEntity.getFieldValue("expression")));
366 public Filter(Entity anEntity, FilterInstance anInstance) {
368 instance = anInstance;
371 public Entity getEntity() {
375 public EntityAdapter getEntityAdapter() {
376 return model.makeEntityAdapter("filter", entity);
379 public void update(String aType, String anExpression, String aComments, String aTag,
380 String anArticleAction, String aCommentAction) throws AbuseExc {
382 instance = getFilterTypeForId(aType).constructFilterInstance(anExpression);
384 entity.setFieldValue("type", aType);
385 entity.setFieldValue("expression", anExpression);
386 entity.setFieldValue("tag", aType);
387 entity.setFieldValue("comment", aComments);
388 entity.setFieldValue("articleaction", anArticleAction);
389 entity.setFieldValue("commentaction", aCommentAction);
390 entity.setFieldValue("last_hit", null);
394 public void updateLastHit(Date aDate) {
395 entity.setFieldValue("last_hit",
396 DatabaseHelper.convertDateToInternalRepresenation(
397 new Date(System.currentTimeMillis())));
401 public String getType() {
402 return entity.getFieldValue("type");
405 public String getExpression() {
406 return entity.getFieldValue("expression");
409 public String getTag() {
410 return entity.getFieldValue("tag");
413 public String getComment() {
414 return entity.getFieldValue("comment");
417 public String getArticleAction() {
418 return entity.getFieldValue("articleaction");
421 public String getCommentAction() {
422 return entity.getFieldValue("commentaction");
425 public FilterInstance getInstance() {
429 public boolean test(Entity anEntity, Request aRequest) {
430 return instance.test(anEntity, aRequest);
434 public synchronized void reload() {
435 filterGroups.clear();
436 idToFilterGroup.clear();
439 Iterator i = new EntityIteratorAdapter("", "priority asc", 100, model, "filterGroup");
440 while (i.hasNext()) {
441 EntityAdapter entityAdapter = (EntityAdapter) i.next();
442 List filters = new ArrayList();
443 Iterator j = (Iterator) entityAdapter.getIterator("to_filters");
444 while (j.hasNext()) {
445 filters.add(((EntityAdapter) j.next()).getEntity());
448 FilterGroup filterGroup = new FilterGroup(entityAdapter.getEntity(), filters);
449 introduceFilterGroup(filterGroup);
452 catch (Throwable e) {
453 logger.error("Can't load filters: " + e.getMessage());
457 public synchronized List getFilterGroups() {
458 List result = new ArrayList();
459 Iterator i = filterGroups.iterator();
460 while (i.hasNext()) {
461 result.add(((FilterGroup) i.next()).getEntityAdapter());
467 public synchronized void updateFilterGroup(String anId, String aName) {
468 FilterGroup filterGroup = getFilterGroupForId(anId);
469 filterGroup.getEntity().setFieldValue("name", aName);
470 filterGroup.getEntity().update();
473 public synchronized void addFilterGroup(String aName) throws DatabaseExc {
474 Entity entity = DatabaseFilterGroup.getInstance().createNewEntity();
475 entity.setFieldValue("name", aName);
477 String priority = "1";
479 if (filterGroups.size() > 0) {
481 String lastPriorityString = ((FilterGroup) filterGroups.get(filterGroups.size()-1)).getEntity().getFieldValue("priority");
482 int lastPriority = Integer.parseInt(lastPriorityString);
483 priority = Integer.toString(lastPriority + 1);
485 catch (Exception e) {
488 entity.setFieldValue("priority", priority);
491 FilterGroup filterGroup = new FilterGroup(entity);
492 introduceFilterGroup(filterGroup);
495 public synchronized void moveFilterGroupUp(String anId) {
496 FilterGroup group = (FilterGroup) idToFilterGroup.get(anId);
497 String priority = group.getEntity().getFieldValue("priority");
498 int index = filterGroups.indexOf(group);
500 FilterGroup groupBefore = (FilterGroup) filterGroups.remove(index-1);
501 filterGroups.add(index, groupBefore);
502 group.getEntity().setFieldValue("priority", groupBefore.getEntity().getFieldValue("priority"));
503 groupBefore.getEntity().setFieldValue("priority", priority);
504 group.getEntity().update();
505 groupBefore.getEntity().update();
509 public synchronized void moveFilterGroupDown(String anId) {
510 FilterGroup group = (FilterGroup) idToFilterGroup.get(anId);
511 String priority = group.getEntity().getFieldValue("priority");
512 int index = filterGroups.indexOf(group);
513 if (index<filterGroups.size()-1) {
514 FilterGroup groupAfter = (FilterGroup) filterGroups.remove(index+1);
515 filterGroups.add(index, groupAfter);
516 group.getEntity().setFieldValue("priority", groupAfter.getEntity().getFieldValue("priority"));
517 groupAfter.getEntity().setFieldValue("priority", priority);
518 group.getEntity().update();
519 groupAfter.getEntity().update();
523 public synchronized void deleteFilterGroup(String anId) {
525 FilterGroup filterGroup = getFilterGroupForId(anId);
526 removeFilterGroup(filterGroup);
527 DatabaseFilter.getInstance().deleteByWhereClause("filter_group_id = " + anId);
528 DatabaseFilterGroup.getInstance().delete(anId);
531 public synchronized void deleteFilter(String aGroupId, String anId) {
532 getFilterGroupForId(aGroupId).deleteFilter(anId);
536 public synchronized String updateFilter(String aGroupId, String anId,
537 String aType, String anExpression,
540 String anArticleAction,
541 String aCommentAction) {
542 return getFilterGroupForId(aGroupId).updateFilter(anId, aType,
543 anExpression, aComments, aTag, anArticleAction, aCommentAction);
546 public synchronized String addFilter(String aGroupId,
547 String aType, String anExpression,
550 String anArticleAction,
551 String aCommentAction) throws DatabaseExc {
552 return getFilterGroupForId(aGroupId).createFilter(aType, anExpression,
553 aComments, aTag, anArticleAction, aCommentAction);
556 public synchronized String moveFilterUp(String aGroupId, String anId) {
557 return getFilterGroupForId(aGroupId).moveFilterUp(anId);
560 public synchronized String moveFilterDown(String aGroupId, String anId) {
561 return getFilterGroupForId(aGroupId).moveFilterDown(anId);
564 public synchronized String moveFilterToTop(String aGroupId, String anId) {
565 return getFilterGroupForId(aGroupId).moveFilterToTop(anId);
568 public synchronized String moveFilterToBottom(String aGroupId, String anId) {
569 return getFilterGroupForId(aGroupId).moveFilterToBottom(anId);
574 public FilterGroup getFilterGroupForId(String anId) {
575 FilterGroup result = (FilterGroup) idToFilterGroup.get(anId);
576 if (result == null) {
577 throw new NullPointerException("No such filter group");
583 public Filter getFilterForId(String aGroupId, String anId) {
584 return getFilterGroupForId(aGroupId).getFilterForId(anId);
588 public List getFilters(String aFilterGroupId) {
589 return getFilterGroupForId(aFilterGroupId).getFilterEntityAdapterList();
592 private synchronized void introduceFilterGroup(FilterGroup aFilterGroup) {
593 filterGroups.add(aFilterGroup);
594 idToFilterGroup.put(aFilterGroup.getEntity().getId(), aFilterGroup);
597 private synchronized void removeFilterGroup(FilterGroup aFilterGroup) {
598 filterGroups.remove(aFilterGroup);
599 idToFilterGroup.remove(aFilterGroup.getEntity().getId());
602 private FilterType getFilterTypeForId(String anId) {
603 return (FilterType) filterTypes.get(anId);