mirror of
https://github.com/Alfresco/alfresco-community-repo.git
synced 2025-07-31 17:39:05 +00:00
Merged enterprise features
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2746 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Paul Holmes-Higgin
@@ -0,0 +1,779 @@
|
|||||||
|
/*
|
||||||
|
* Copyright (C) 2005 Alfresco, Inc.
|
||||||
|
*
|
||||||
|
* Licensed under the Alfresco Network License. You may obtain a
|
||||||
|
* copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.alfrescosoftware.com/legal/
|
||||||
|
*
|
||||||
|
* Please view the license relevant to your network subscription.
|
||||||
|
*
|
||||||
|
* BY CLICKING THE "I UNDERSTAND AND ACCEPT" BOX, OR INSTALLING,
|
||||||
|
* READING OR USING ALFRESCO'S Network SOFTWARE (THE "SOFTWARE"),
|
||||||
|
* YOU ARE AGREEING ON BEHALF OF THE ENTITY LICENSING THE SOFTWARE
|
||||||
|
* ("COMPANY") THAT COMPANY WILL BE BOUND BY AND IS BECOMING A PARTY TO
|
||||||
|
* THIS ALFRESCO NETWORK AGREEMENT ("AGREEMENT") AND THAT YOU HAVE THE
|
||||||
|
* AUTHORITY TO BIND COMPANY. IF COMPANY DOES NOT AGREE TO ALL OF THE
|
||||||
|
* TERMS OF THIS AGREEMENT, DO NOT SELECT THE "I UNDERSTAND AND AGREE"
|
||||||
|
* BOX AND DO NOT INSTALL THE SOFTWARE OR VIEW THE SOURCE CODE. COMPANY
|
||||||
|
* HAS NOT BECOME A LICENSEE OF, AND IS NOT AUTHORIZED TO USE THE
|
||||||
|
* SOFTWARE UNLESS AND UNTIL IT HAS AGREED TO BE BOUND BY THESE LICENSE
|
||||||
|
* TERMS. THE "EFFECTIVE DATE" FOR THIS AGREEMENT SHALL BE THE DAY YOU
|
||||||
|
* CHECK THE "I UNDERSTAND AND ACCEPT" BOX.
|
||||||
|
*/
|
||||||
|
package org.alfresco.repo.webdav.auth;
|
||||||
|
|
||||||
|
import java.io.IOException;
|
||||||
|
import java.net.InetAddress;
|
||||||
|
import java.net.UnknownHostException;
|
||||||
|
import java.security.NoSuchAlgorithmException;
|
||||||
|
import java.util.ArrayList;
|
||||||
|
import java.util.List;
|
||||||
|
import java.util.Random;
|
||||||
|
|
||||||
|
import javax.servlet.Filter;
|
||||||
|
import javax.servlet.FilterChain;
|
||||||
|
import javax.servlet.FilterConfig;
|
||||||
|
import javax.servlet.ServletContext;
|
||||||
|
import javax.servlet.ServletException;
|
||||||
|
import javax.servlet.ServletRequest;
|
||||||
|
import javax.servlet.ServletResponse;
|
||||||
|
import javax.servlet.http.HttpServletRequest;
|
||||||
|
import javax.servlet.http.HttpServletResponse;
|
||||||
|
import javax.servlet.http.HttpSession;
|
||||||
|
import javax.transaction.UserTransaction;
|
||||||
|
|
||||||
|
import org.alfresco.filesys.server.auth.PasswordEncryptor;
|
||||||
|
import org.alfresco.filesys.server.auth.ntlm.NTLM;
|
||||||
|
import org.alfresco.filesys.server.auth.ntlm.NTLMLogonDetails;
|
||||||
|
import org.alfresco.filesys.server.auth.ntlm.NTLMMessage;
|
||||||
|
import org.alfresco.filesys.server.auth.ntlm.TargetInfo;
|
||||||
|
import org.alfresco.filesys.server.auth.ntlm.Type1NTLMMessage;
|
||||||
|
import org.alfresco.filesys.server.auth.ntlm.Type2NTLMMessage;
|
||||||
|
import org.alfresco.filesys.server.auth.ntlm.Type3NTLMMessage;
|
||||||
|
import org.alfresco.filesys.server.config.ServerConfiguration;
|
||||||
|
import org.alfresco.filesys.util.DataPacker;
|
||||||
|
import org.alfresco.model.ContentModel;
|
||||||
|
import org.alfresco.repo.security.authentication.AuthenticationComponent;
|
||||||
|
import org.alfresco.repo.security.authentication.AuthenticationException;
|
||||||
|
import org.alfresco.repo.security.authentication.MD4PasswordEncoder;
|
||||||
|
import org.alfresco.repo.security.authentication.MD4PasswordEncoderImpl;
|
||||||
|
import org.alfresco.repo.security.authentication.NTLMMode;
|
||||||
|
import org.alfresco.repo.security.authentication.ntlm.NTLMPassthruToken;
|
||||||
|
import org.alfresco.service.ServiceRegistry;
|
||||||
|
import org.alfresco.service.cmr.repository.NodeRef;
|
||||||
|
import org.alfresco.service.cmr.repository.NodeService;
|
||||||
|
import org.alfresco.service.cmr.security.AuthenticationService;
|
||||||
|
import org.alfresco.service.cmr.security.PersonService;
|
||||||
|
import org.alfresco.service.transaction.TransactionService;
|
||||||
|
import org.apache.commons.codec.binary.Base64;
|
||||||
|
import org.apache.commons.logging.Log;
|
||||||
|
import org.apache.commons.logging.LogFactory;
|
||||||
|
import org.springframework.web.context.WebApplicationContext;
|
||||||
|
import org.springframework.web.context.support.WebApplicationContextUtils;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* NTLM Authentication Filter Class
|
||||||
|
*
|
||||||
|
* @author GKSpencer
|
||||||
|
*/
|
||||||
|
public class NTLMAuthenticationFilter implements Filter
|
||||||
|
{
|
||||||
|
// NTLM authentication session object names
|
||||||
|
|
||||||
|
public static final String NTLM_AUTH_SESSION = "_alfNTLMAuthSess";
|
||||||
|
public static final String NTLM_AUTH_DETAILS = "_alfNTLMDetails";
|
||||||
|
|
||||||
|
// Authenticated user session object name
|
||||||
|
|
||||||
|
public final static String AUTHENTICATION_USER = "_alfDAVAuthTicket";
|
||||||
|
|
||||||
|
// NTLM flags mask, used to mask out features that are not supported
|
||||||
|
|
||||||
|
private static final int NTLM_FLAGS = NTLM.Flag56Bit + NTLM.FlagLanManKey + NTLM.FlagNegotiateNTLM +
|
||||||
|
NTLM.FlagNegotiateOEM + NTLM.FlagNegotiateUnicode;
|
||||||
|
|
||||||
|
// Debug logging
|
||||||
|
|
||||||
|
private static Log logger = LogFactory.getLog(NTLMAuthenticationFilter.class);
|
||||||
|
|
||||||
|
// Servlet context, required to get authentication service
|
||||||
|
|
||||||
|
private ServletContext m_context;
|
||||||
|
|
||||||
|
// File server configuration
|
||||||
|
|
||||||
|
private ServerConfiguration m_srvConfig;
|
||||||
|
|
||||||
|
// Various services required by NTLM authenticator
|
||||||
|
|
||||||
|
private AuthenticationService m_authService;
|
||||||
|
private AuthenticationComponent m_authComponent;
|
||||||
|
private PersonService m_personService;
|
||||||
|
private NodeService m_nodeService;
|
||||||
|
private TransactionService m_transactionService;
|
||||||
|
|
||||||
|
// Password encryptor
|
||||||
|
|
||||||
|
private PasswordEncryptor m_encryptor = new PasswordEncryptor();
|
||||||
|
|
||||||
|
// Allow guest access
|
||||||
|
|
||||||
|
private boolean m_allowGuest;
|
||||||
|
|
||||||
|
// Random number generator used to generate challenge keys
|
||||||
|
|
||||||
|
private Random m_random = new Random(System.currentTimeMillis());
|
||||||
|
|
||||||
|
// MD4 hash decoder
|
||||||
|
|
||||||
|
private MD4PasswordEncoder m_md4Encoder = new MD4PasswordEncoderImpl();
|
||||||
|
|
||||||
|
// Local server name, from either the file servers config or DNS host name
|
||||||
|
|
||||||
|
private String m_srvName;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Initialize the filter
|
||||||
|
*
|
||||||
|
* @param args FilterConfig
|
||||||
|
* @exception ServletException
|
||||||
|
*/
|
||||||
|
public void init(FilterConfig args) throws ServletException
|
||||||
|
{
|
||||||
|
// Save the servlet context, needed to get hold of the authentication service
|
||||||
|
|
||||||
|
m_context = args.getServletContext();
|
||||||
|
|
||||||
|
// Setup the authentication context
|
||||||
|
|
||||||
|
WebApplicationContext ctx = WebApplicationContextUtils.getRequiredWebApplicationContext(m_context);
|
||||||
|
|
||||||
|
ServiceRegistry serviceRegistry = (ServiceRegistry) ctx.getBean(ServiceRegistry.SERVICE_REGISTRY);
|
||||||
|
m_nodeService = serviceRegistry.getNodeService();
|
||||||
|
m_transactionService = serviceRegistry.getTransactionService();
|
||||||
|
|
||||||
|
m_authService = (AuthenticationService) ctx.getBean("authenticationService");
|
||||||
|
m_authComponent = (AuthenticationComponent) ctx.getBean("authenticationComponent");
|
||||||
|
m_personService = (PersonService) ctx.getBean("personService");
|
||||||
|
|
||||||
|
m_srvConfig = (ServerConfiguration) ctx.getBean(ServerConfiguration.SERVER_CONFIGURATION);
|
||||||
|
|
||||||
|
// Check that the authentication component supports the required mode
|
||||||
|
|
||||||
|
if ( m_authComponent.getNTLMMode() != NTLMMode.MD4_PROVIDER &&
|
||||||
|
m_authComponent.getNTLMMode() != NTLMMode.PASS_THROUGH)
|
||||||
|
{
|
||||||
|
throw new ServletException("Required authentication mode not available");
|
||||||
|
}
|
||||||
|
|
||||||
|
// Get the local server name, try the file server config first
|
||||||
|
|
||||||
|
if ( m_srvConfig != null)
|
||||||
|
{
|
||||||
|
m_srvName = m_srvConfig.getLocalServerName( true);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Get the host name
|
||||||
|
|
||||||
|
try
|
||||||
|
{
|
||||||
|
// Get the local host name
|
||||||
|
|
||||||
|
m_srvName = InetAddress.getLocalHost().getHostName();
|
||||||
|
|
||||||
|
// Strip any domain name
|
||||||
|
|
||||||
|
int pos = m_srvName.indexOf(".");
|
||||||
|
if ( pos != -1)
|
||||||
|
m_srvName = m_srvName.substring(0, pos - 1);
|
||||||
|
}
|
||||||
|
catch (UnknownHostException ex)
|
||||||
|
{
|
||||||
|
// Log the error
|
||||||
|
|
||||||
|
if ( logger.isErrorEnabled())
|
||||||
|
logger.error("NTLM filter, error getting local host name", ex);
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check if the server name is valid
|
||||||
|
|
||||||
|
if ( m_srvName == null || m_srvName.length() == 0)
|
||||||
|
throw new ServletException("Failed to get local server name");
|
||||||
|
|
||||||
|
// Check if guest access is to be allowed
|
||||||
|
|
||||||
|
String guestAccess = args.getInitParameter("AllowGuest");
|
||||||
|
if ( guestAccess != null)
|
||||||
|
{
|
||||||
|
m_allowGuest = Boolean.parseBoolean(guestAccess);
|
||||||
|
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled() && m_allowGuest)
|
||||||
|
logger.debug("NTLM filter guest access allowed");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Run the filter
|
||||||
|
*
|
||||||
|
* @param sreq ServletRequest
|
||||||
|
* @param sresp ServletResponse
|
||||||
|
* @param chain FilterChain
|
||||||
|
* @exception IOException
|
||||||
|
* @exception ServletException
|
||||||
|
*/
|
||||||
|
public void doFilter(ServletRequest sreq, ServletResponse sresp, FilterChain chain) throws IOException,
|
||||||
|
ServletException
|
||||||
|
{
|
||||||
|
// Get the HTTP request/response/session
|
||||||
|
|
||||||
|
HttpServletRequest req = (HttpServletRequest) sreq;
|
||||||
|
HttpServletResponse resp = (HttpServletResponse) sresp;
|
||||||
|
|
||||||
|
HttpSession httpSess = req.getSession(true);
|
||||||
|
|
||||||
|
// Check if there is an authorization header with an NTLM security blob
|
||||||
|
|
||||||
|
String authHdr = req.getHeader("Authorization");
|
||||||
|
boolean reqAuth = false;
|
||||||
|
|
||||||
|
if ( authHdr != null && authHdr.startsWith("NTLM"))
|
||||||
|
reqAuth = true;
|
||||||
|
|
||||||
|
// Check if the user is already authenticated
|
||||||
|
|
||||||
|
WebDAVUser user = (WebDAVUser) httpSess.getAttribute(AUTHENTICATION_USER);
|
||||||
|
|
||||||
|
if ( user != null && reqAuth == false)
|
||||||
|
{
|
||||||
|
try
|
||||||
|
{
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("User " + user.getUserName() + " validate ticket");
|
||||||
|
|
||||||
|
// Validate the user ticket
|
||||||
|
|
||||||
|
m_authService.validate( user.getTicket());
|
||||||
|
reqAuth = false;
|
||||||
|
}
|
||||||
|
catch (AuthenticationException ex)
|
||||||
|
{
|
||||||
|
if ( logger.isErrorEnabled())
|
||||||
|
logger.error("Failed to validate user " + user.getUserName(), ex);
|
||||||
|
|
||||||
|
reqAuth = true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// If the user has been validated and we do not require re-authentication then continue to
|
||||||
|
// the next filter
|
||||||
|
|
||||||
|
if ( reqAuth == false && user != null)
|
||||||
|
{
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("Authentication not required, chaining ...");
|
||||||
|
|
||||||
|
// Chain to the next filter
|
||||||
|
|
||||||
|
chain.doFilter(sreq, sresp);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check the authorization header
|
||||||
|
|
||||||
|
if ( authHdr == null) {
|
||||||
|
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("New NTLM auth request from " + req.getRemoteHost() + " (" +
|
||||||
|
req.getRemoteAddr() + ":" + req.getRemotePort() + ")");
|
||||||
|
|
||||||
|
// Send back a request for NTLM authentication
|
||||||
|
|
||||||
|
resp.setHeader("WWW-Authenticate", "NTLM");
|
||||||
|
resp.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
|
||||||
|
|
||||||
|
resp.flushBuffer();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Decode the received NTLM blob and validate
|
||||||
|
|
||||||
|
byte[] ntlmByts = Base64.decodeBase64( authHdr.substring(5).getBytes());
|
||||||
|
int ntlmTyp = NTLMMessage.isNTLMType(ntlmByts);
|
||||||
|
|
||||||
|
if ( ntlmTyp == NTLM.Type1)
|
||||||
|
{
|
||||||
|
// Process the type 1 NTLM message
|
||||||
|
|
||||||
|
Type1NTLMMessage type1Msg = new Type1NTLMMessage(ntlmByts);
|
||||||
|
processType1(type1Msg, req, resp, httpSess);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
else if ( ntlmTyp == NTLM.Type3)
|
||||||
|
{
|
||||||
|
// Process the type 3 NTLM message
|
||||||
|
|
||||||
|
Type3NTLMMessage type3Msg = new Type3NTLMMessage(ntlmByts);
|
||||||
|
processType3(type3Msg, req, resp, httpSess, chain);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Remove any existing session and NTLM details from the session
|
||||||
|
|
||||||
|
httpSess.removeAttribute(NTLM_AUTH_SESSION);
|
||||||
|
httpSess.removeAttribute(NTLM_AUTH_DETAILS);
|
||||||
|
|
||||||
|
// Force the logon to start again
|
||||||
|
|
||||||
|
resp.setHeader("WWW-Authenticate", "NTLM");
|
||||||
|
resp.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
|
||||||
|
|
||||||
|
resp.flushBuffer();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Delete the servlet filter
|
||||||
|
*/
|
||||||
|
public void destroy()
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Process a type 1 NTLM message
|
||||||
|
*
|
||||||
|
* @param type1Msg Type1NTLMMessage
|
||||||
|
* @param req HttpServletRequest
|
||||||
|
* @param resp HttpServletResponse
|
||||||
|
* @param httpSess HttpSession
|
||||||
|
* @exception IOException
|
||||||
|
*/
|
||||||
|
private void processType1(Type1NTLMMessage type1Msg, HttpServletRequest req, HttpServletResponse resp,
|
||||||
|
HttpSession httpSess) throws IOException
|
||||||
|
{
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("Received type1 " + type1Msg);
|
||||||
|
|
||||||
|
// Get the existing NTLM details
|
||||||
|
|
||||||
|
NTLMLogonDetails ntlmDetails = null;
|
||||||
|
|
||||||
|
if ( httpSess != null)
|
||||||
|
{
|
||||||
|
ntlmDetails = (NTLMLogonDetails) httpSess.getAttribute(NTLM_AUTH_DETAILS);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check if cached logon details are available
|
||||||
|
|
||||||
|
if ( ntlmDetails != null && ntlmDetails.hasType2Message() && ntlmDetails.hasNTLMHashedPassword() &&
|
||||||
|
ntlmDetails.hasAuthenticationToken())
|
||||||
|
{
|
||||||
|
// Get the authentication server type2 response
|
||||||
|
|
||||||
|
Type2NTLMMessage cachedType2 = ntlmDetails.getType2Message();
|
||||||
|
|
||||||
|
byte[] type2Bytes = cachedType2.getBytes();
|
||||||
|
String ntlmBlob = "NTLM " + new String(Base64.encodeBase64(type2Bytes));
|
||||||
|
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("Sending cached NTLM type2 to client - " + cachedType2);
|
||||||
|
|
||||||
|
// Send back a request for NTLM authentication
|
||||||
|
|
||||||
|
resp.setHeader("WWW-Authenticate", ntlmBlob);
|
||||||
|
resp.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
|
||||||
|
|
||||||
|
resp.flushBuffer();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Clear any cached logon details
|
||||||
|
|
||||||
|
httpSess.removeAttribute(NTLM_AUTH_DETAILS);
|
||||||
|
|
||||||
|
// Set the 8 byte challenge for the new logon request
|
||||||
|
|
||||||
|
byte[] challenge = null;
|
||||||
|
NTLMPassthruToken authToken = null;
|
||||||
|
|
||||||
|
if ( m_authComponent.getNTLMMode() == NTLMMode.MD4_PROVIDER)
|
||||||
|
{
|
||||||
|
// Generate a random 8 byte challenge
|
||||||
|
|
||||||
|
challenge = new byte[8];
|
||||||
|
DataPacker.putIntelLong(m_random.nextLong(), challenge, 0);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Create an authentication token for the new logon
|
||||||
|
|
||||||
|
authToken = new NTLMPassthruToken();
|
||||||
|
|
||||||
|
// Run the first stage of the passthru authentication to get the challenge
|
||||||
|
|
||||||
|
m_authComponent.authenticate( authToken);
|
||||||
|
|
||||||
|
// Get the challenge from the token
|
||||||
|
|
||||||
|
if ( authToken.getChallenge() != null)
|
||||||
|
challenge = authToken.getChallenge().getBytes();
|
||||||
|
}
|
||||||
|
|
||||||
|
// Get the flags from the client request and mask out unsupported features
|
||||||
|
|
||||||
|
int ntlmFlags = type1Msg.getFlags() & NTLM_FLAGS;
|
||||||
|
|
||||||
|
// Build a type2 message to send back to the client, containing the challenge
|
||||||
|
|
||||||
|
List<TargetInfo> tList = new ArrayList<TargetInfo>();
|
||||||
|
tList.add(new TargetInfo(NTLM.TargetServer, m_srvName));
|
||||||
|
|
||||||
|
Type2NTLMMessage type2Msg = new Type2NTLMMessage();
|
||||||
|
type2Msg.buildType2(ntlmFlags, m_srvName, challenge, null, tList);
|
||||||
|
|
||||||
|
// Store the NTLM logon details, cache the type2 message, and token if using passthru
|
||||||
|
|
||||||
|
ntlmDetails = new NTLMLogonDetails();
|
||||||
|
ntlmDetails.setType2Message( type2Msg);
|
||||||
|
ntlmDetails.setAuthenticationToken(authToken);
|
||||||
|
|
||||||
|
httpSess.setAttribute(NTLM_AUTH_DETAILS, ntlmDetails);
|
||||||
|
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("Sending NTLM type2 to client - " + type2Msg);
|
||||||
|
|
||||||
|
// Send back a request for NTLM authentication
|
||||||
|
|
||||||
|
byte[] type2Bytes = type2Msg.getBytes();
|
||||||
|
String ntlmBlob = "NTLM " + new String(Base64.encodeBase64(type2Bytes));
|
||||||
|
|
||||||
|
resp.setHeader("WWW-Authenticate", ntlmBlob);
|
||||||
|
resp.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
|
||||||
|
|
||||||
|
resp.flushBuffer();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Process a type 3 NTLM message
|
||||||
|
*
|
||||||
|
* @param type3Msg Type3NTLMMessage
|
||||||
|
* @param req HttpServletRequest
|
||||||
|
* @param resp HttpServletResponse
|
||||||
|
* @param httpSess HttpSession
|
||||||
|
* @param chain FilterChain
|
||||||
|
* @exception IOException
|
||||||
|
* @exception ServletException
|
||||||
|
*/
|
||||||
|
private void processType3(Type3NTLMMessage type3Msg, HttpServletRequest req, HttpServletResponse resp,
|
||||||
|
HttpSession httpSess, FilterChain chain) throws IOException, ServletException
|
||||||
|
{
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("Received type3 " + type3Msg);
|
||||||
|
|
||||||
|
// Get the existing NTLM details
|
||||||
|
|
||||||
|
NTLMLogonDetails ntlmDetails = null;
|
||||||
|
WebDAVUser user = null;
|
||||||
|
|
||||||
|
if ( httpSess != null)
|
||||||
|
{
|
||||||
|
ntlmDetails = (NTLMLogonDetails) httpSess.getAttribute(NTLM_AUTH_DETAILS);
|
||||||
|
user = (WebDAVUser) httpSess.getAttribute(AUTHENTICATION_USER);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Get the NTLM logon details
|
||||||
|
|
||||||
|
String userName = type3Msg.getUserName();
|
||||||
|
String workstation = type3Msg.getWorkstation();
|
||||||
|
String domain = type3Msg.getDomain();
|
||||||
|
|
||||||
|
boolean authenticated = false;
|
||||||
|
|
||||||
|
// Check if we are using cached details for the authentication
|
||||||
|
|
||||||
|
if ( user != null && ntlmDetails != null && ntlmDetails.hasNTLMHashedPassword())
|
||||||
|
{
|
||||||
|
// Check if the received NTLM hashed password matches the cached password
|
||||||
|
|
||||||
|
byte[] ntlmPwd = type3Msg.getNTLMHash();
|
||||||
|
byte[] cachedPwd = ntlmDetails.getNTLMHashedPassword();
|
||||||
|
|
||||||
|
if ( ntlmPwd != null)
|
||||||
|
{
|
||||||
|
if ( ntlmPwd.length == cachedPwd.length)
|
||||||
|
{
|
||||||
|
authenticated = true;
|
||||||
|
for ( int i = 0; i < ntlmPwd.length; i++)
|
||||||
|
{
|
||||||
|
if ( ntlmPwd[i] != cachedPwd[i])
|
||||||
|
authenticated = false;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("Using cached NTLM hash, authenticated = " + authenticated);
|
||||||
|
|
||||||
|
try
|
||||||
|
{
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("User " + user.getUserName() + " validate ticket");
|
||||||
|
|
||||||
|
// Validate the user ticket
|
||||||
|
|
||||||
|
m_authService.validate( user.getTicket());
|
||||||
|
}
|
||||||
|
catch (AuthenticationException ex)
|
||||||
|
{
|
||||||
|
if ( logger.isErrorEnabled())
|
||||||
|
logger.error("Failed to validate user " + user.getUserName(), ex);
|
||||||
|
|
||||||
|
// Restart the authentication
|
||||||
|
|
||||||
|
httpSess.removeAttribute(NTLM_AUTH_SESSION);
|
||||||
|
httpSess.removeAttribute(NTLM_AUTH_DETAILS);
|
||||||
|
|
||||||
|
// Force the logon to start again
|
||||||
|
|
||||||
|
resp.setHeader("WWW-Authenticate", "NTLM");
|
||||||
|
resp.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
|
||||||
|
|
||||||
|
resp.flushBuffer();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Allow the user to access the requested page
|
||||||
|
|
||||||
|
chain.doFilter( req, resp);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Cehck if we are using local MD4 password hashes or passthru authentication
|
||||||
|
|
||||||
|
if ( m_authComponent.getNTLMMode() == NTLMMode.MD4_PROVIDER)
|
||||||
|
{
|
||||||
|
// Get the stored MD4 hashed password for the user, or null if the user does not exist
|
||||||
|
|
||||||
|
String md4hash = m_authComponent.getMD4HashedPassword(userName);
|
||||||
|
|
||||||
|
if ( md4hash != null)
|
||||||
|
{
|
||||||
|
// Generate the local encrypted password using the challenge that was sent to the client
|
||||||
|
|
||||||
|
byte[] p21 = new byte[21];
|
||||||
|
byte[] md4byts = m_md4Encoder.decodeHash(md4hash);
|
||||||
|
System.arraycopy(md4byts, 0, p21, 0, 16);
|
||||||
|
|
||||||
|
// Generate the local hash of the password using the same challenge
|
||||||
|
|
||||||
|
byte[] localHash = null;
|
||||||
|
|
||||||
|
try
|
||||||
|
{
|
||||||
|
localHash = m_encryptor.doNTLM1Encryption(p21, ntlmDetails.getChallengeKey());
|
||||||
|
}
|
||||||
|
catch (NoSuchAlgorithmException ex)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
// Validate the password
|
||||||
|
|
||||||
|
byte[] clientHash = type3Msg.getNTLMHash();
|
||||||
|
|
||||||
|
if ( clientHash != null && localHash != null && clientHash.length == localHash.length)
|
||||||
|
{
|
||||||
|
int i = 0;
|
||||||
|
|
||||||
|
while ( i < clientHash.length && clientHash[i] == localHash[i])
|
||||||
|
i++;
|
||||||
|
|
||||||
|
if ( i == clientHash.length)
|
||||||
|
authenticated = true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("User " + userName + " does not have Alfresco account");
|
||||||
|
|
||||||
|
// Bypass NTLM authentication and display the logon screen, user account does not
|
||||||
|
// exist in Alfresco
|
||||||
|
|
||||||
|
authenticated = false;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Passthru mode, send the hashed password details to the passthru authentication server
|
||||||
|
|
||||||
|
NTLMPassthruToken authToken = (NTLMPassthruToken) ntlmDetails.getAuthenticationToken();
|
||||||
|
authToken.setUserAndPassword( type3Msg.getUserName(), type3Msg.getNTLMHash(), PasswordEncryptor.NTLM1);
|
||||||
|
|
||||||
|
try
|
||||||
|
{
|
||||||
|
// Run the second stage of the passthru authentication
|
||||||
|
|
||||||
|
m_authComponent.authenticate(authToken);
|
||||||
|
authenticated = true;
|
||||||
|
}
|
||||||
|
catch (AuthenticationException ex)
|
||||||
|
{
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("Authentication failed, " + ex.getMessage());
|
||||||
|
}
|
||||||
|
finally
|
||||||
|
{
|
||||||
|
// Clear the authentication token from the NTLM details
|
||||||
|
|
||||||
|
ntlmDetails.setAuthenticationToken(null);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check if the user has been authenticated, if so then setup the user environment
|
||||||
|
|
||||||
|
if ( authenticated == true)
|
||||||
|
{
|
||||||
|
UserTransaction tx = m_transactionService.getUserTransaction();
|
||||||
|
|
||||||
|
try
|
||||||
|
{
|
||||||
|
tx.begin();
|
||||||
|
|
||||||
|
// Get user details for the authenticated user
|
||||||
|
m_authComponent.setCurrentUser(userName.toLowerCase());
|
||||||
|
|
||||||
|
// The user name used may be a different case to the NTLM supplied user name, read the current
|
||||||
|
// user and use that name
|
||||||
|
userName = m_authComponent.getCurrentUserName();
|
||||||
|
|
||||||
|
// Setup User object and Home space ID etc.
|
||||||
|
NodeRef personNodeRef = m_personService.getPerson(userName);
|
||||||
|
String currentTicket = m_authService.getCurrentTicket();
|
||||||
|
user = new WebDAVUser(userName, currentTicket, personNodeRef);
|
||||||
|
|
||||||
|
NodeRef homeSpaceRef = (NodeRef) m_nodeService.getProperty(personNodeRef, ContentModel.PROP_HOMEFOLDER);
|
||||||
|
user.setHomeNode(homeSpaceRef);
|
||||||
|
|
||||||
|
// commit
|
||||||
|
tx.commit();
|
||||||
|
}
|
||||||
|
catch (Throwable ex)
|
||||||
|
{
|
||||||
|
try
|
||||||
|
{
|
||||||
|
tx.rollback();
|
||||||
|
}
|
||||||
|
catch (Exception ex2)
|
||||||
|
{
|
||||||
|
logger.error("Failed to rollback transaction", ex2);
|
||||||
|
}
|
||||||
|
if(ex instanceof RuntimeException)
|
||||||
|
{
|
||||||
|
throw (RuntimeException)ex;
|
||||||
|
}
|
||||||
|
else if(ex instanceof IOException)
|
||||||
|
{
|
||||||
|
throw (IOException)ex;
|
||||||
|
}
|
||||||
|
else if(ex instanceof ServletException)
|
||||||
|
{
|
||||||
|
throw (ServletException)ex;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
throw new RuntimeException("Authentication setup failed", ex);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Store the user
|
||||||
|
|
||||||
|
httpSess.setAttribute(AUTHENTICATION_USER, user);
|
||||||
|
|
||||||
|
// Update the NTLM logon details in the session
|
||||||
|
|
||||||
|
if ( ntlmDetails == null)
|
||||||
|
{
|
||||||
|
// No cached NTLM details
|
||||||
|
|
||||||
|
ntlmDetails = new NTLMLogonDetails( userName, workstation, domain, false, m_srvName);
|
||||||
|
|
||||||
|
httpSess.setAttribute(NTLM_AUTH_DETAILS, ntlmDetails);
|
||||||
|
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("No cached NTLM details, created");
|
||||||
|
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Update the cached NTLM details
|
||||||
|
|
||||||
|
ntlmDetails.setDetails(userName, workstation, domain, false, m_srvName);
|
||||||
|
ntlmDetails.setNTLMHashedPassword(type3Msg.getNTLMHash());
|
||||||
|
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("Updated cached NTLM details");
|
||||||
|
}
|
||||||
|
|
||||||
|
// Debug
|
||||||
|
|
||||||
|
if ( logger.isDebugEnabled())
|
||||||
|
logger.debug("User logged on via NTLM, " + ntlmDetails);
|
||||||
|
|
||||||
|
// Allow the user to access the requested page
|
||||||
|
|
||||||
|
chain.doFilter( req, resp);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Remove any existing session and NTLM details from the session
|
||||||
|
|
||||||
|
httpSess.removeAttribute(NTLM_AUTH_SESSION);
|
||||||
|
httpSess.removeAttribute(NTLM_AUTH_DETAILS);
|
||||||
|
|
||||||
|
// Force the logon to start again
|
||||||
|
|
||||||
|
resp.setHeader("WWW-Authenticate", "NTLM");
|
||||||
|
resp.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
|
||||||
|
|
||||||
|
resp.flushBuffer();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user