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Merge 3.1 to HEAD:

Browse Source 
13314: Fix for CIFS offline sync, reconnect updated file to properties/history. ETHREEOH-1247.
  13334: Added attribute to allow CIFS host announcement to be switched off via custom config. ETHREEOH-1356. Fixed bug in Windows domain name config.
  13335: Changed error message to warning, and removed stacktrace, when resolving the server name.
  13336: Renamed file-servers-custom.xml out of the way, to .sample2. Seems to be from an Adobe merge.
  13377: Hack to enable basic CIFS IPv6 support, enabled via <tcpipSMB ipv6="enabled"/> in the xml config file.
  13399: Fixed confusing debug message.
  13431: Added missing parsing of 'offlineCheckInterval' parameter.
  13457: Added support for file locking on in-memory pseudo files. Fix for problem with __AlfrescoClient.url files ETHREEOH-1311
  13485: Added the missing CIFS sessionTimeout config value parsing.
  13521: Updated file-servers.xml default config to match previous file-servers-custom.xml settings


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@13762 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Gary Spencer
2009-03-27 13:27:03 +00:00
parent 436f79cb78
commit 26d5c95982
10 changed files with 3099 additions and 2784 deletions
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95
config/alfresco/extension/file-servers-custom.xml.sample
View File

@@ -4,42 +4,91 @@
<!-- add additional filesystems remove the replace="true" attribute -->
<config evaluator="string-compare" condition="Filesystems" replace="true">
<filesystems>
<!-- Default share -->
<filesystem name="Alfresco">
<!-- Alfresco repository access shared filesystem -->
<filesystem name="${filesystem.name}">
<store>workspace://SpacesStore</store>
<rootPath>/app:company_home</rootPath>
<!-- Enable Web client launch shortcut in all folders -->
<!-- Add a URL file to each folder that links back to the web client -->
<urlFile>
<!-- Change the filename as required, keeping the .url extension -->
<filename>_Alfresco.url</filename>
<!-- Change 'localhost' to the name or IP of the Alfresco server -->
<webpath>http://localhost:8080/alfresco/</webpath>
<filename>__Alfresco.url</filename>
<webpath>http://${localname}:8080/alfresco/</webpath>
</urlFile>
</filesystem>
</filesystems>
<!-- Mark locked files as offline -->
<offlineFiles/>
</config>
<!-- Desktop actions -->
<!-- Uses a client-side application to trigger a server-side action -->
<!-- Echo - displays a message echoed from the server -->
<!-- URL - launches a URL via the Windows shell -->
<!-- CmdLine - launches the Notepad application -->
<!-- CheckInOut - checks files in/out, drag and drop files onto the application -->
<!-- JavaScript - run a server-side script -->
<!-- JavaScriptURL - server-side script that generates a URL to the folder using a ticket -->
<!-- to avoid having to logon -->
<!-- Allow guest access to file systems -->
<config evaluator="string-compare" condition="Filesystem Security">
<desktopActions>
<global>
<path>alfresco/desktop/Alfresco.exe</path>
<webpath>http://${localname}:8080/alfresco/</webpath>
</global>
<action>
<class>org.alfresco.filesys.repo.desk.CheckInOutDesktopAction</class>
<name>CheckInOut</name>
<filename>__CheckInOut.exe</filename>
</action>
<action>
<class>org.alfresco.filesys.repo.desk.JavaScriptDesktopAction</class>
<name>JavaScriptURL</name>
<filename>__ShowDetails.exe</filename>
<script>alfresco/desktop/showDetails.js</script>
<attributes>anyFiles</attributes>
<preprocess>copyToTarget</preprocess>
</action>
<action>
<class>org.alfresco.filesys.repo.desk.EchoDesktopAction</class>
<name>Echo</name>
<filename>__AlfrescoEcho.exe</filename>
</action>
<action>
<class>org.alfresco.filesys.repo.desk.URLDesktopAction</class>
<name>URL</name>
<filename>__AlfrescoURL.exe</filename>
</action>
<action>
<class>org.alfresco.filesys.repo.desk.CmdLineDesktopAction</class>
<name>CmdLine</name>
<filename>__AlfrescoCmd.exe</filename>
</action>
<action>
<class>org.alfresco.filesys.repo.desk.JavaScriptDesktopAction</class>
<name>JavaScript</name>
<filename>__AlfrescoScript.exe</filename>
<script>alfresco/desktop/dumpRequest.js</script>
<attributes>anyFiles, multiplePaths , allowNoParams</attributes>
<preprocess>confirm, copyToTarget</preprocess>
</action>
</desktopActions>
<authenticator type="alfresco">
<allowGuest/>
<!-- Map any unknown user to guest -->
<!-- Additional access control of the filesystem -->
<!-- Access type of 'none' will stop the filesystem from showing up for that user/address/protocol -->
<!--
<mapUnknownUserToGuest/>
<accessControl default="Write">
<user name="admin" access="Write"/>
<address subnet="192.168.1.0" mask="255.255.255.0" access="Write"/>
</accessControl>
-->
</authenticator>
</filesystem>
<!-- AVM virtualization view of all stores/versions for WCM -->
<!-- virtual view can be any of the following: normal, site, staging, author, preview -->
<avmfilesystem name="AVM">
<virtualView stores="site,staging,author"/>
</avmfilesystem>
</filesystems>
</config>
</alfresco-config>

0
config/alfresco/extension/file-servers-custom.xml → config/alfresco/extension/file-servers-custom.xml.sample2
View File

1
config/alfresco/network-protocol-context.xml
View File

@@ -86,6 +86,7 @@
<property name="serviceRegistry"><ref bean="ServiceRegistry"/></property>
<property name="stateReaper"><ref bean="fileStateReaper"/></property>
<property name="nodeMonitorFactory"><ref bean="nodeMonitorFactory"/></property>
<property name="nodeArchiveService"><ref bean="nodeArchiveService" /></property>
</bean>
<bean id="nodeMonitorFactory" class="org.alfresco.filesys.repo.NodeMonitorFactory">

87
source/java/org/alfresco/filesys/ServerConfigurationBean.java
View File

@@ -192,6 +192,10 @@ public class ServerConfigurationBean extends ServerConfiguration implements Appl
private static final int MemoryPoolMinimumAllocation = 5;
private static final int MemoryPoolMaximumAllocation = 500;
// Maximum session timeout
private static final int MaxSessionTimeout = 60 * 60; // 1 hour
// Authentication manager
private AuthenticationManager m_authenticationManager;
@@ -935,7 +939,21 @@ public class ServerConfigurationBean extends ServerConfiguration implements Appl
elem = config.getConfigElement("hostAnnounce");
if (elem != null)
{
// Check if the host announcer has been disabled
String enabled = elem.getAttribute("enabled");
if ( enabled != null && enabled.equalsIgnoreCase( "false"))
{
// Switch off the host announcer
cifsConfig.setHostAnnouncer( false);
// Log that host announcements are not enabled
logger.info("Host announcements not enabled");
}
else
{
// Check for an announcement interval
String interval = elem.getAttribute("interval");
@@ -961,6 +979,7 @@ public class ServerConfigurationBean extends ServerConfiguration implements Appl
cifsConfig.setHostAnnouncer(true);
}
}
// Check if NetBIOS SMB is enabled
@@ -1273,6 +1292,28 @@ public class ServerConfigurationBean extends ServerConfiguration implements Appl
throw new AlfrescoRuntimeException("Invalid TCP/IP SMB port");
}
}
// Check if IPv6 support should be enabled
String ipv6 = elem.getAttribute("ipv6");
if ( ipv6 != null && ipv6.equalsIgnoreCase( "enabled"))
{
try
{
// Use the IPv6 bind all address
cifsConfig.setSMBBindAddress( InetAddress.getByName( "::"));
// DEBUG
if ( logger.isInfoEnabled())
logger.info("Enabled CIFS IPv6 bind address for native SMB");
}
catch ( UnknownHostException ex)
{
throw new AlfrescoRuntimeException("Failed to enable IPv6 bind address, " + ex.getMessage());
}
}
}
else
{
@@ -1428,7 +1469,21 @@ public class ServerConfigurationBean extends ServerConfiguration implements Appl
elem = config.getConfigElement("Win32Announce");
if (elem != null)
{
// Check if the Win32 host announcer has been disabled
String enabled = elem.getAttribute("enabled");
if ( enabled != null && enabled.equalsIgnoreCase( "false"))
{
// Switch off the Win32 host announcer
cifsConfig.setWin32HostAnnouncer( false);
// Log that host announcements are not enabled
logger.info("Win32 host announcements not enabled");
}
else
{
// Check for an announcement interval
String interval = elem.getAttribute("interval");
@@ -1454,6 +1509,7 @@ public class ServerConfigurationBean extends ServerConfiguration implements Appl
cifsConfig.setWin32HostAnnouncer(true);
}
}
// Check if NetBIOS and/or TCP/IP SMB have been enabled
@@ -1626,6 +1682,35 @@ public class ServerConfigurationBean extends ServerConfiguration implements Appl
if ( logger.isDebugEnabled())
logger.debug("NIO based code disabled for CIFS server");
}
// Check if a session timeout is configured
elem = config.getConfigElement("sessionTimeout");
if ( elem != null) {
// Validate the session timeout value
String sessTmo = elem.getValue();
if ( sessTmo != null && sessTmo.length() > 0) {
try {
// Convert the timeout value to milliseconds
int tmo = Integer.parseInt(sessTmo);
if ( tmo < 0 || tmo > MaxSessionTimeout)
throw new AlfrescoRuntimeException("Session timeout out of range (0 - " + MaxSessionTimeout + ")");
// Convert the session timeout to milliseconds
cifsConfig.setSocketTimeout( tmo * 1000);
}
catch (NumberFormatException ex) {
throw new AlfrescoRuntimeException("Invalid session timeout value, " + sessTmo);
}
}
else
throw new AlfrescoRuntimeException("Session timeout value not specified");
}
}
catch ( InvalidConfigurationException ex)
{
@@ -3044,7 +3129,7 @@ public class ServerConfigurationBean extends ServerConfiguration implements Appl
String domainName = null;
if (getPlatformType() == Platform.Type.WINDOWS && isNativeCodeDisabled())
if (getPlatformType() == Platform.Type.WINDOWS && isNativeCodeDisabled() == false)
{
// Get the local domain/workgroup name via JNI

2
source/java/org/alfresco/filesys/auth/cifs/AlfrescoCifsAuthenticator.java
View File

@@ -398,7 +398,7 @@ public class AlfrescoCifsAuthenticator extends CifsAuthenticatorBase
// Logging
if ( logger.isInfoEnabled())
logger.info( "Logged on user " + client.getUserName() + " (" + sess.getRemoteAddress() + ") using auto-logon shared password");
logger.info( "Logged on user " + client.getUserName() + " (" + sess.getRemoteAddress() + ")");
// Set the current user to be authenticated, save the authentication token

38
source/java/org/alfresco/filesys/auth/cifs/PassthruCifsAuthenticator.java
View File

@@ -92,6 +92,9 @@ public class PassthruCifsAuthenticator extends CifsAuthenticatorBase implements
public final static int MinSessionTmo = 2000; // 2 seconds
public final static int MaxSessionTmo = 30000; // 30 seconds
public final static int MinCheckInterval = 10; // 10 seconds
public final static int MaxCheckInterval = 15 * 60; // 15 minutes
// Passthru keep alive interval
public final static long PassthruKeepAliveInterval = 60000L; // 60 seconds
@@ -1155,9 +1158,42 @@ public class PassthruCifsAuthenticator extends CifsAuthenticatorBase implements
super.initialize(config, params);
// Create the passthru authentication server list
// Check if the offline check interval has been specified
ConfigElement checkInterval = params.getChild("offlineCheckInterval");
if ( checkInterval != null)
{
try
{
// Validate the check interval value
int offlineCheck = Integer.parseInt(checkInterval.getValue());
// Range check the value
if ( offlineCheck < MinCheckInterval || offlineCheck > MaxCheckInterval)
throw new InvalidConfigurationException("Invalid offline check interval, valid range is " + MinCheckInterval + " to " + MaxCheckInterval);
// Set the offline check interval for offline passthru servers
m_passthruServers = new PassthruServers( offlineCheck);
// DEBUG
if ( logger.isDebugEnabled())
logger.debug("Using offline check interval of " + offlineCheck + " seconds");
}
catch (NumberFormatException ex)
{
throw new InvalidConfigurationException("Invalid offline check interval specified");
}
}
else
{
// Create the passthru server list with the default offline check interval
m_passthruServers = new PassthruServers();
}
// Propagate the debug setting

45
source/java/org/alfresco/filesys/auth/ftp/PassthruFtpAuthenticator.java
View File

@@ -36,10 +36,8 @@ import net.sf.acegisecurity.Authentication;
import org.alfresco.config.ConfigElement;
import org.alfresco.error.AlfrescoRuntimeException;
import org.alfresco.filesys.AlfrescoConfigSection;
import org.alfresco.filesys.ServerConfigurationBean;
import org.alfresco.filesys.alfresco.AlfrescoClientInfo;
import org.alfresco.jlan.ftp.FTPAuthenticator;
import org.alfresco.jlan.ftp.FTPSrvSession;
import org.alfresco.jlan.server.SrvSession;
import org.alfresco.jlan.server.auth.ClientInfo;
@@ -53,11 +51,6 @@ import org.alfresco.jlan.server.config.SecurityConfigSection;
import org.alfresco.jlan.server.config.ServerConfiguration;
import org.alfresco.jlan.smb.Protocol;
import org.alfresco.jlan.util.IPAddress;
import org.alfresco.repo.security.authentication.AuthenticationComponent;
import org.alfresco.service.cmr.security.AuthenticationService;
import org.alfresco.service.transaction.TransactionService;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Passthru FTP Authenticator Class
@@ -72,6 +65,9 @@ public class PassthruFtpAuthenticator extends FTPAuthenticatorBase {
public final static int MinSessionTmo = 2000; // 2 seconds
public final static int MaxSessionTmo = 30000; // 30 seconds
public final static int MinCheckInterval = 10; // 10 seconds
public final static int MaxCheckInterval = 15 * 60; // 15 minutes
// Passthru keep alive interval
public final static long PassthruKeepAliveInterval = 60000L; // 60 seconds
@@ -108,9 +104,42 @@ public class PassthruFtpAuthenticator extends FTPAuthenticatorBase {
m_passwordEncryptor = new PasswordEncryptor();
// Create the passthru authentication server list
// Check if the offline check interval has been specified
ConfigElement checkInterval = params.getChild("offlineCheckInterval");
if ( checkInterval != null)
{
try
{
// Validate the check interval value
int offlineCheck = Integer.parseInt(checkInterval.getValue());
// Range check the value
if ( offlineCheck < MinCheckInterval || offlineCheck > MaxCheckInterval)
throw new InvalidConfigurationException("Invalid offline check interval, valid range is " + MinCheckInterval + " to " + MaxCheckInterval);
// Set the offline check interval for offline passthru servers
m_passthruServers = new PassthruServers( offlineCheck);
// DEBUG
if ( logger.isDebugEnabled())
logger.debug("Using offline check interval of " + offlineCheck + " seconds");
}
catch (NumberFormatException ex)
{
throw new InvalidConfigurationException("Invalid offline check interval specified");
}
}
else
{
// Create the passthru server list with the default offline check interval
m_passthruServers = new PassthruServers();
}
// Check if the session timeout has been specified

146
source/java/org/alfresco/filesys/repo/ContentDiskDriver.java
View File

@@ -67,10 +67,12 @@ import org.alfresco.jlan.smb.server.SMBServer;
import org.alfresco.jlan.smb.server.SMBSrvSession;
import org.alfresco.jlan.util.WildCard;
import org.alfresco.model.ContentModel;
import org.alfresco.repo.security.authentication.AuthenticationUtil;
import org.alfresco.repo.node.archive.NodeArchiveService;
import org.alfresco.repo.security.authentication.AuthenticationContext;
import org.alfresco.repo.security.authentication.AuthenticationUtil;
import org.alfresco.service.cmr.lock.NodeLockedException;
import org.alfresco.service.cmr.model.FileFolderService;
import org.alfresco.service.cmr.repository.ContentData;
import org.alfresco.service.cmr.repository.ContentService;
import org.alfresco.service.cmr.repository.MimetypeService;
import org.alfresco.service.cmr.repository.NodeRef;
@@ -117,8 +119,9 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
private MimetypeService mimetypeService;
private PermissionService permissionService;
private FileFolderService fileFolderService;
private NodeArchiveService nodeArchiveService;
private AuthenticationContext authenticationContext;
private AuthenticationContext authContext;
private AuthenticationService authService;
// Node monitor factory
@@ -160,12 +163,12 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
}
/**
* Return the authentication component
* Return the authentication context
*
* @return AuthenticationContext
*/
public final AuthenticationContext getAuthenticationContext() {
return authenticationContext;
return authContext;
}
/**
@@ -225,6 +228,15 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
return this.permissionService;
}
/**
* Return the node archive service
*
* @param NodeArchiveService
*/
public final NodeArchiveService getNodeArchiveService() {
return nodeArchiveService;
}
/**
* @param contentService the content service
*/
@@ -268,13 +280,13 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
}
/**
* Set the authentication component
* Set the authentication context
*
* @param authComponent AuthenticationContext
* @param authContext AuthenticationContext
*/
public void setAuthenticationContext(AuthenticationContext authComponent)
public void setAuthenticationContext(AuthenticationContext authContext)
{
this.authenticationContext = authComponent;
this.authContext = authContext;
}
/**
@@ -314,6 +326,15 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
m_nodeMonitorFactory = nodeMonitorFactory;
}
/**
* Set the node archive service
*
* @param NodeArchiveService nodeArchiveService
*/
public void setNodeArchiveService(NodeArchiveService nodeArchiveService) {
this.nodeArchiveService = nodeArchiveService;
}
/**
* Parse and validate the parameter string and create a device context object for this instance
* of the shared device. The same DeviceInterface implementation may be used for multiple
@@ -1418,6 +1439,11 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
// Store the state with the file
netFile.setFileState( fstate);
// Set the file access date/time, if available
if ( fstate.hasAccessDateTime())
netFile.setAccessDate( fstate.getAccessDateTime());
}
// If the file has been opened for overwrite then truncate the file to zero length, this will
@@ -1857,15 +1883,23 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
fileFolderService.delete(nodeRef);
// Remove the file state
// Set the file state to indicate a delete on close
if ( ctx.hasStateTable())
ctx.getStateTable().removeFileState(file.getFullName());
{
// Get, or create, the file state
// Commit the current transaction
FileState fState = ctx.getStateTable().findFileState(file.getFullName(), false, true);
// sess.endTransaction();
// beginReadTransaction( sess);
// Indicate that the file was deleted via a delete on close request
fState.setFileStatus(FileStateStatus.DeleteOnClose);
// Make sure the file state is cached for a short while, save the noderef details
fState.setExpiryTime(System.currentTimeMillis() + FileState.RenameTimeout);
fState.setNodeRef(nodeRef);
}
}
catch (org.alfresco.repo.security.permissions.AccessDeniedException ex)
{
@@ -1939,11 +1973,7 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
// done
if (logger.isDebugEnabled())
{
logger.debug("Deleted file: \n" +
" file: " + name + "\n" +
" node: " + nodeRef);
}
logger.debug("Deleted file: " + name + ", node: " + nodeRef);
}
catch (NodeLockedException ex)
{
@@ -2033,11 +2063,15 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
if ( !cifsHelper.isDirectory(nodeToMoveRef) )
{
// Check if there is a renamed file state for the new file name
// Check if there is a renamed or delete on close file state for the new file name
FileState renState = ctx.getStateTable().removeFileState(newName);
if ( renState != null && renState.getFileStatus() == FileStateStatus.Renamed)
if ( renState != null)
{
// Check if there is a renamed state for the new file
if ( renState.getFileStatus() == FileStateStatus.Renamed)
{
// DEBUG
@@ -2066,6 +2100,78 @@ public class ContentDiskDriver extends AlfrescoDiskDriver implements DiskInterfa
fstate.setNodeRef(renState.getNodeRef());
fstate.setFileStatus(FileStateStatus.FileExists);
}
else if ( renState.getFileStatus() == FileStateStatus.DeleteOnClose)
{
// DEBUG
if ( logger.isDebugEnabled())
logger.debug(" Found delete on close state, restore and relink, " + renState);
// Restore the deleted node so we can relink the new version to the old history/properties
NodeRef archivedNode = getNodeArchiveService().getArchivedNode( renState.getNodeRef());
// DEBUG
if ( logger.isDebugEnabled())
logger.debug(" Found archived node + " + archivedNode);
if ( archivedNode != null && getNodeService().exists( archivedNode))
{
// Restore the node
NodeRef restoredNode = getNodeService().restoreNode( archivedNode, null, null, null);
// DEBUG
if ( logger.isDebugEnabled())
logger.debug(" Restored node " + restoredNode);
if ( restoredNode != null)
{
// Get the properties for the old and new nodes
org.alfresco.service.cmr.model.FileInfo restoredFileInfo = fileFolderService.getFileInfo(restoredNode);
org.alfresco.service.cmr.model.FileInfo fileToMoveInfo = fileFolderService.getFileInfo(nodeToMoveRef);
// Swap the content between the temp and restored file
ContentData oldContentData = restoredFileInfo.getContentData();
ContentData newContentData = fileToMoveInfo.getContentData();
nodeService.setProperty(restoredNode, ContentModel.PROP_CONTENT, newContentData);
nodeService.setProperty(nodeToMoveRef, ContentModel.PROP_CONTENT, oldContentData);
relinked = true;
// Delete the node that was being renamed
nodeService.deleteNode(nodeToMoveRef);
// DEBUG
if ( logger.isDebugEnabled())
logger.debug(" Swapped content to restored node, delete " + oldName + ", nodeRef=" + nodeToMoveRef);
// Link the node ref for the associated rename state
if ( renState.hasRenameState())
renState.getRenameState().setNodeRef(nodeToMoveRef);
// Remove the file state for the old file name
ctx.getStateTable().removeFileState(oldName);
// Get, or create, a file state for the new file path
FileState fstate = ctx.getStateTable().findFileState(newName, false, true);
fstate.setNodeRef(restoredNode);
fstate.setFileStatus(FileStateStatus.FileExists);
}
}
}
}
}
else
{

2
source/java/org/alfresco/filesys/state/FileState.java
View File

@@ -57,7 +57,7 @@ public class FileState
// File status
public enum FileStateStatus { NotExist, FileExists, FolderExists, Renamed };
public enum FileStateStatus { NotExist, FileExists, FolderExists, Renamed, DeleteOnClose };
// File name/path

9
source/java/org/alfresco/filesys/state/FileStateLockManager.java
View File

@@ -32,6 +32,7 @@ import org.alfresco.jlan.locking.NotLockedException;
import org.alfresco.jlan.server.SrvSession;
import org.alfresco.jlan.server.filesys.NetworkFile;
import org.alfresco.jlan.server.filesys.TreeConnection;
import org.alfresco.jlan.server.filesys.pseudo.MemoryNetworkFile;
import org.alfresco.jlan.server.locking.LockManager;
import org.alfresco.filesys.alfresco.AlfrescoNetworkFile;
@@ -65,6 +66,10 @@ public class FileStateLockManager implements LockManager {
AlfrescoNetworkFile alfFile = (AlfrescoNetworkFile) file;
fstate = alfFile.getFileState();
}
else if ( file instanceof MemoryNetworkFile) {
file.addLock(lock);
return;
}
if ( fstate == null)
throw new IOException("Open file without state (lock)");
@@ -98,6 +103,10 @@ public class FileStateLockManager implements LockManager {
AlfrescoNetworkFile alfFile = (AlfrescoNetworkFile) file;
fstate = alfFile.getFileState();
}
else if ( file instanceof MemoryNetworkFile) {
file.removeLock(lock);
return;
}
if ( fstate == null)
throw new IOException("Open file without state (unlock)");