Autopsy  4.19.3
Graphical digital forensics platform for The Sleuth Kit and other tools.
ContactCache.java
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1 /*
2  * Autopsy Forensic Browser
3  *
4  * Copyright 2020 Basis Technology Corp.
5  * Contact: carrier <at> sleuthkit <dot> org
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  * http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  */
19 package org.sleuthkit.autopsy.communications;
20 
21 import com.google.common.cache.CacheBuilder;
22 import com.google.common.cache.CacheLoader;
23 import com.google.common.cache.LoadingCache;
24 import java.beans.PropertyChangeEvent;
25 import java.beans.PropertyChangeListener;
26 import java.sql.SQLException;
27 import java.util.ArrayList;
28 import java.util.EnumSet;
29 import java.util.HashMap;
30 import java.util.List;
31 import java.util.Map;
32 import java.util.concurrent.ExecutionException;
33 import java.util.concurrent.TimeUnit;
34 import java.util.logging.Level;
40 import org.sleuthkit.datamodel.Account;
41 import org.sleuthkit.datamodel.BlackboardArtifact;
42 import org.sleuthkit.datamodel.BlackboardAttribute;
43 import org.sleuthkit.datamodel.TskCoreException;
44 
51 final public class ContactCache {
52 
53  private static final Logger logger = Logger.getLogger(ContactCache.class.getName());
54 
55  private static ContactCache instance;
56 
57  private final LoadingCache<String, Map<String, List<BlackboardArtifact>>> accountMap;
58 
69  static public synchronized List<BlackboardArtifact> getContacts(Account account) throws ExecutionException {
70  return getInstance().accountMap.get("realMap").get(account.getTypeSpecificID());
71  }
72 
76  static synchronized void invalidateCache() {
77  getInstance().accountMap.invalidateAll();
78  }
79 
83  private ContactCache() {
84 
85  accountMap = CacheBuilder.newBuilder().expireAfterAccess(10, TimeUnit.MINUTES).build(
86  new CacheLoader<String, Map<String, List<BlackboardArtifact>>>() {
87  @Override
88  public Map<String, List<BlackboardArtifact>> load(String key) {
89  try {
90  return buildMap();
91  } catch (SQLException | TskCoreException ex) {
92  logger.log(Level.WARNING, "Failed to build account to contact map", ex);
93  }
94  return new HashMap<>(); // Return an empty map if there is an exception to avoid NPE and continual trying.
95  }
96  });
97 
98  PropertyChangeListener ingestListener = pce -> {
99  String eventType = pce.getPropertyName();
100  if (eventType.equals(DATA_ADDED.toString())) {
101  ModuleDataEvent eventData = (ModuleDataEvent) pce.getOldValue();
102  if (eventData.getBlackboardArtifactType().getTypeID() == BlackboardArtifact.ARTIFACT_TYPE.TSK_CONTACT.getTypeID()) {
103  invalidateCache();
104  }
105  }
106  };
107 
108  Case.addEventTypeSubscriber(EnumSet.of(Case.Events.CURRENT_CASE), (PropertyChangeEvent event) -> {
109  if (event.getNewValue() == null) {
110  invalidateCache();
111  }
112  });
113 
114  IngestManager.getInstance().addIngestModuleEventListener(EnumSet.of(DATA_ADDED), ingestListener);
115  }
116 
122  private static synchronized ContactCache getInstance() {
123  if (instance == null) {
124  instance = new ContactCache();
125  }
126 
127  return instance;
128  }
129 
138  private Map<String, List<BlackboardArtifact>> buildMap() throws TskCoreException, SQLException {
139  Map<String, List<BlackboardArtifact>> acctMap = new HashMap<>();
140  List<BlackboardArtifact> contactList = Case.getCurrentCase().getSleuthkitCase().getBlackboardArtifacts(BlackboardArtifact.ARTIFACT_TYPE.TSK_CONTACT);
141 
142  for (BlackboardArtifact contactArtifact : contactList) {
143  List<BlackboardAttribute> contactAttributes = contactArtifact.getAttributes();
144  for (BlackboardAttribute attribute : contactAttributes) {
145  String typeName = attribute.getAttributeType().getTypeName();
146 
147  if (typeName.startsWith("TSK_EMAIL")
148  || typeName.startsWith("TSK_PHONE")
149  || typeName.startsWith("TSK_NAME")
150  || typeName.startsWith("TSK_ID")) {
151  String accountID = attribute.getValueString();
152  List<BlackboardArtifact> artifactList = acctMap.getOrDefault(accountID, new ArrayList<>());
153 
154  acctMap.put(accountID, artifactList);
155 
156  if (!artifactList.contains(contactArtifact)) {
157  artifactList.add(contactArtifact);
158  }
159  }
160  }
161 
162  }
163 
164  return acctMap;
165  }
166 }
BlackboardArtifact.Type getBlackboardArtifactType()
static synchronized IngestManager getInstance()
final LoadingCache< String, Map< String, List< BlackboardArtifact > > > accountMap
static synchronized ContactCache getInstance()
Map< String, List< BlackboardArtifact > > buildMap()
void addIngestModuleEventListener(final PropertyChangeListener listener)
synchronized static Logger getLogger(String name)
Definition: Logger.java:124
static void addEventTypeSubscriber(Set< Events > eventTypes, PropertyChangeListener subscriber)
Definition: Case.java:711
static synchronized List< BlackboardArtifact > getContacts(Account account)

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