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https://github.com/Alfresco/alfresco-community-repo.git
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5d8d0e136c
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2281 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
332 lines
10 KiB
Java
332 lines
10 KiB
Java
/*
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* Copyright (C) 2005 Alfresco, Inc.
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*
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* Licensed under the Mozilla Public License version 1.1
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* with a permitted attribution clause. You may obtain a
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* copy of the License at
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*
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* http://www.alfresco.org/legal/license.txt
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the
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* License.
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*/
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package org.alfresco.filesys.server.filesys;
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import java.util.Enumeration;
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import org.alfresco.config.ConfigElement;
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import org.alfresco.filesys.server.SrvSession;
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import org.alfresco.filesys.server.auth.ClientInfo;
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import org.alfresco.filesys.server.auth.InvalidUserException;
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import org.alfresco.filesys.server.config.InvalidConfigurationException;
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import org.alfresco.filesys.server.config.ServerConfiguration;
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import org.alfresco.filesys.server.core.ShareMapper;
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import org.alfresco.filesys.server.core.ShareType;
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import org.alfresco.filesys.server.core.SharedDevice;
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import org.alfresco.filesys.server.core.SharedDeviceList;
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import org.alfresco.filesys.smb.server.repo.ContentContext;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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/**
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* Home Share Mapper Class
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*
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* <p>Maps disk share lookup requests to the list of shares defined in the server
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* configuration and provides a dynamic home share mapped to the users home node.
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*
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* @author GKSpencer
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*/
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public class HomeShareMapper implements ShareMapper
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{
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// Logging
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private static final Log logger = LogFactory.getLog("org.alfresco.smb.protocol");
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// Home folder share name
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public static final String HOME_FOLDER_SHARE = "HOME";
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// Server configuration
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private ServerConfiguration m_config;
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// Home folder share name
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private String m_homeShareName = HOME_FOLDER_SHARE;
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// Debug enable flag
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private boolean m_debug;
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/**
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* Default constructor
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*/
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public HomeShareMapper()
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{
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}
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/**
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* Initialize the share mapper
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*
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* @param config ServerConfiguration
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* @param params ConfigElement
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* @exception InvalidConfigurationException
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*/
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public void initializeMapper(ServerConfiguration config, ConfigElement params) throws InvalidConfigurationException
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{
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// Save the server configuration
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m_config = config;
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// Check if the home share name has been specified
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String homeName = params.getAttribute("name");
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if ( homeName != null && homeName.length() > 0)
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m_homeShareName = homeName;
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// Check if debug is enabled
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if (params != null && params.getChild("debug") != null)
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m_debug = true;
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}
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/**
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* Check if debug output is enabled
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*
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* @return boolean
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*/
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public final boolean hasDebug()
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{
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return m_debug;
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}
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/**
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* Return the home folder share name
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*
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* @return String
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*/
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public final String getHomeFolderName()
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{
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return m_homeShareName;
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}
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/**
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* Return the list of available shares.
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*
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* @param host String
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* @param sess SrvSession
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* @param allShares boolean
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* @return SharedDeviceList
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*/
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public SharedDeviceList getShareList(String host, SrvSession sess, boolean allShares)
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{
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// Check if the user has a home folder, and the session does not currently have any
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// dynamic shares defined
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if ( sess != null && sess.hasClientInformation() && sess.hasDynamicShares() == false)
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{
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ClientInfo client = sess.getClientInformation();
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if ( client.hasHomeFolder())
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{
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// Create the home folder share
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DiskSharedDevice homeShare = createHomeDiskShare(client);
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sess.addDynamicShare(homeShare);
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// Debug
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if ( logger.isDebugEnabled())
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logger.debug("Added " + getHomeFolderName() + " share to list of shares for " + client.getUserName());
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}
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}
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// Make a copy of the global share list and add the per session dynamic shares
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SharedDeviceList shrList = new SharedDeviceList(m_config.getShares());
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if ( sess != null && sess.hasDynamicShares()) {
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// Add the per session dynamic shares
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shrList.addShares(sess.getDynamicShareList());
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}
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// Remove unavailable shares from the list and return the list
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if ( allShares == false)
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shrList.removeUnavailableShares();
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return shrList;
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}
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/**
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* Find a share using the name and type for the specified client.
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*
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* @param host String
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* @param name String
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* @param typ int
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* @param sess SrvSession
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* @param create boolean
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* @return SharedDevice
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* @exception InvalidUserException
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*/
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public SharedDevice findShare(String tohost, String name, int typ, SrvSession sess, boolean create)
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throws Exception
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{
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// Check for the special HOME disk share
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SharedDevice share = null;
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if (( typ == ShareType.DISK || typ == ShareType.UNKNOWN) && name.equalsIgnoreCase(getHomeFolderName()) &&
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sess.getClientInformation() != null) {
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// Get the client details
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ClientInfo client = sess.getClientInformation();
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// DEBUG
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if ( logger.isDebugEnabled())
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logger.debug("Map share " + name + ", type=" + ShareType.TypeAsString(typ) + ", client=" + client);
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// Check if the user has a home folder node
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if ( client != null && client.hasHomeFolder()) {
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// Check if the share has already been created for the session
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if ( sess.hasDynamicShares()) {
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// Check if the required share exists in the sessions dynamic share list
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share = sess.getDynamicShareList().findShare(name, typ, false);
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// DEBUG
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if ( logger.isDebugEnabled())
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logger.debug(" Reusing existing dynamic share for " + name);
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}
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// Check if we found a share, if not then create a new dynamic share for the home directory
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if ( share == null && create == true) {
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// Create the home share mapped to the users home folder
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DiskSharedDevice diskShare = createHomeDiskShare(client);
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// Add the new share to the sessions dynamic share list
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sess.addDynamicShare(diskShare);
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share = diskShare;
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// DEBUG
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if (logger.isDebugEnabled())
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logger.debug(" Mapped share " + name + " to " + client.getHomeFolder());
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}
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}
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else
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throw new InvalidUserException("No home directory");
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}
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else {
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// Find the required share by name/type. Use a case sensitive search first, if that fails use a case
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// insensitive search.
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share = m_config.getShares().findShare(name, typ, false);
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if ( share == null) {
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// Try a case insensitive search for the required share
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share = m_config.getShares().findShare(name, typ, true);
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}
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}
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// Check if the share is available
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if ( share != null && share.getContext() != null && share.getContext().isAvailable() == false)
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share = null;
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// Return the shared device, or null if no matching device was found
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return share;
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}
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/**
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* Delete temporary shares for the specified session
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*
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* @param sess SrvSession
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*/
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public void deleteShares(SrvSession sess)
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{
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// Check if the session has any dynamic shares
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if ( sess.hasDynamicShares() == false)
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return;
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// Delete the dynamic shares
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SharedDeviceList shares = sess.getDynamicShareList();
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Enumeration<SharedDevice> enm = shares.enumerateShares();
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while ( enm.hasMoreElements()) {
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// Get the current share from the list
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SharedDevice shr = (SharedDevice) enm.nextElement();
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// Close the shared device
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shr.getContext().CloseContext();
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// DEBUG
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if (logger.isDebugEnabled())
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logger.debug("Deleted dynamic share " + shr);
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}
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// Clear the dynamic share list
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shares.removeAllShares();
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}
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/**
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* Close the share mapper, release any resources.
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*/
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public void closeMapper()
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{
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// TODO Auto-generated method stub
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}
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/**
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* Create a disk share for the home folder
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*
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* @param client ClientInfo
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* @return DiskSharedDevice
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*/
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private final DiskSharedDevice createHomeDiskShare(ClientInfo client)
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{
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// Create the disk driver and context
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DiskInterface diskDrv = m_config.getDiskInterface();
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DiskDeviceContext diskCtx = new ContentContext("", "", client.getHomeFolder());
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// Default the filesystem to look like an 80Gb sized disk with 90% free space
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diskCtx.setDiskInformation(new SrvDiskInfo(2560, 64, 512, 2304));
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// Create a temporary shared device for the users home directory
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return new DiskSharedDevice(getHomeFolderName(), diskDrv, diskCtx, SharedDevice.Temporary);
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}
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}
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