/**
* Sets the default Privacy list used for the session's user. This list is processed if there is
* no active list set for the session.
*
* @param defaultList the default Privacy list used for the session's user.
*/
public void setDefaultList(PrivacyList defaultList) {
// Do nothing if nothing has changed
if ((this.defaultList == null && defaultList == null)
|| (defaultList != null && defaultList.getName().equals(this.defaultList))) {
return;
}
this.defaultList = defaultList != null ? defaultList.getName() : null;
if (ClusterManager.isClusteringStarted()) {
// Track information about the session and share it with other cluster nodes
Cache<String, ClientSessionInfo> cache = SessionManager.getInstance().getSessionInfoCache();
cache.put(getAddress().toString(), new ClientSessionInfo(this));
}
}
/**
* Returns true if the specified packet must not be blocked based on the active or default privacy
* list rules. The active list will be tried first. If none was found then the default list is
* going to be used. If no default list was defined for this user then allow the packet to flow.
*
* @param packet the packet to analyze if it must be blocked.
* @return true if the specified packet must be blocked.
*/
@Override
public boolean canProcess(Packet packet) {
PrivacyList list = getActiveList();
if (list != null) {
// If a privacy list is active then make sure that the packet is not blocked
return !list.shouldBlockPacket(packet);
} else {
list = getDefaultList();
// There is no active list so check if there exists a default list and make
// sure that the packet is not blocked
return list == null || !list.shouldBlockPacket(packet);
}
}
/**
* Sets a given privacy list as the new default list of the user.
*
* @param username the name of the user that is setting a new default list.
* @param newDefault the new default privacy list.
* @param oldDefault the previous privacy list or <tt>null</tt> if no default list existed.
*/
public void changeDefaultList(String username, PrivacyList newDefault, PrivacyList oldDefault) {
// TODO Analyze concurrency issues when other resource may log in while doing this change
if (oldDefault != null) {
// Update old default list to become just another list
oldDefault.setDefaultList(false);
provider.updatePrivacyList(username, oldDefault);
}
// Update new list to become the default
newDefault.setDefaultList(true);
// Set new default list in the cache
listsCache.put(getDefaultCacheKey(username), newDefault);
// Update both lists in the database
provider.updatePrivacyList(username, newDefault);
}
/**
* Deletes an existing privacy list of a user. If the privacy list being deleted was the default
* list then the user will end up with no default list. Therefore, the user will have to set a new
* default list.
*
* @param username the username of the list owner.
* @param listName the name of the list being deleted.
*/
public void deletePrivacyList(String username, String listName) {
// Trigger event that a privacy list is being deleted
for (PrivacyListEventListener listener : listeners) {
listener.privacyListDeleting(listName);
}
// Remove the list from the cache
listsCache.remove(getCacheKey(username, listName));
// Delete the privacy list from the DB
provider.deletePrivacyList(username, listName);
// Check if deleted list was the default list
PrivacyList defaultList = listsCache.get(getDefaultCacheKey(username));
if (defaultList != null && listName.equals(defaultList.getName())) {
listsCache.remove(getDefaultCacheKey(username));
}
}
/**
* Sets the Privacy list that overrides the default privacy list. This list affects only this
* session and only for the duration of the session.
*
* @param activeList the Privacy list that overrides the default privacy list.
*/
public void setActiveList(PrivacyList activeList) {
this.activeList = activeList != null ? activeList.getName() : null;
if (ClusterManager.isClusteringStarted()) {
// Track information about the session and share it with other cluster nodes
Cache<String, ClientSessionInfo> cache = SessionManager.getInstance().getSessionInfoCache();
cache.put(getAddress().toString(), new ClientSessionInfo(this));
}
}
/**
* Updated the existing privacy list in the database.
*
* @param username the username of the user that updated a privacy list.
* @param list the PrivacyList to update in the database.
*/
public void updatePrivacyList(String username, PrivacyList list) {
Connection con = null;
PreparedStatement pstmt = null;
try {
con = DbConnectionManager.getConnection();
pstmt = con.prepareStatement(UPDATE_PRIVACY_LIST);
pstmt.setInt(1, (list.isDefault() ? 1 : 0));
pstmt.setString(2, list.asElement().asXML());
pstmt.setString(3, username);
pstmt.setString(4, list.getName());
pstmt.executeUpdate();
} catch (Exception e) {
Log.error("Error updating privacy list: " + list.getName() + " of username: " + username, e);
} finally {
DbConnectionManager.closeConnection(pstmt, con);
}
}
/**
* Creates and saves the new privacy list to the database.
*
* @param username the username of the user that created a new privacy list.
* @param list the PrivacyList to save.
*/
public void createPrivacyList(String username, PrivacyList list) {
Connection con = null;
PreparedStatement pstmt = null;
try {
con = DbConnectionManager.getConnection();
pstmt = con.prepareStatement(INSERT_PRIVACY_LIST);
pstmt.setString(1, username);
pstmt.setString(2, list.getName());
pstmt.setInt(3, (list.isDefault() ? 1 : 0));
pstmt.setString(4, list.asElement().asXML());
pstmt.executeUpdate();
} catch (Exception e) {
Log.error("Error adding privacy list: " + list.getName() + " of username: "******"0", which is the case we care about.
privacyListCount.set(-1);
}