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https://github.com/Alfresco/alfresco-community-repo.git
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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2456 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
286 lines
8.4 KiB
Java
286 lines
8.4 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.repo.security.authentication;
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import net.sf.acegisecurity.Authentication;
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import net.sf.acegisecurity.GrantedAuthority;
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import net.sf.acegisecurity.GrantedAuthorityImpl;
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import net.sf.acegisecurity.UserDetails;
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import net.sf.acegisecurity.context.Context;
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import net.sf.acegisecurity.context.ContextHolder;
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import net.sf.acegisecurity.context.security.SecureContext;
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import net.sf.acegisecurity.context.security.SecureContextImpl;
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import net.sf.acegisecurity.providers.UsernamePasswordAuthenticationToken;
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import net.sf.acegisecurity.providers.dao.User;
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import org.alfresco.error.AlfrescoRuntimeException;
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import org.alfresco.service.cmr.security.PermissionService;
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/**
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* This class abstract the support required to set up and query the Acegi context for security enforcement.
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*
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* There are some simple default method implementations to support simple authentication.
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*
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* @author Andy Hind
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*/
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public abstract class AbstractAuthenticationComponent implements AuthenticationComponent
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{
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// Name of the system user
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private static final String SYSTEM_USER_NAME = "System";
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private Boolean allowGuestLogin = null;
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public AbstractAuthenticationComponent()
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{
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super();
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}
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public void setAllowGuestLogin(Boolean allowGuestLogin)
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{
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this.allowGuestLogin = allowGuestLogin;
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}
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/**
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* Explicitly set the current user to be authenticated.
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*
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* @param userName
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* String
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* @return Authentication
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*/
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public Authentication setCurrentUser(String userName) throws AuthenticationException
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{
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if (userName == null)
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{
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throw new AuthenticationException("Null user name");
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}
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try
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{
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UserDetails ud = null;
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if (userName.equals(SYSTEM_USER_NAME))
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{
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GrantedAuthority[] gas = new GrantedAuthority[1];
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gas[0] = new GrantedAuthorityImpl("ROLE_SYSTEM");
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ud = new User(SYSTEM_USER_NAME, "", true, true, true, true, gas);
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}
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else if (userName.equalsIgnoreCase(PermissionService.GUEST_AUTHORITY))
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{
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GrantedAuthority[] gas = new GrantedAuthority[0];
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ud = new User(PermissionService.GUEST_AUTHORITY.toLowerCase(), "", true, true, true, true, gas);
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}
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else
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{
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ud = getUserDetails(userName);
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}
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UsernamePasswordAuthenticationToken auth = new UsernamePasswordAuthenticationToken(ud, "", ud
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.getAuthorities());
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auth.setDetails(ud);
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auth.setAuthenticated(true);
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return setCurrentAuthentication(auth);
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}
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catch (net.sf.acegisecurity.AuthenticationException ae)
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{
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throw new AuthenticationException(ae.getMessage(), ae);
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}
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}
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/**
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* Default implementation that makes an ACEGI object on the fly
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*
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* @param userName
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* @return
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*/
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protected UserDetails getUserDetails(String userName)
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{
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GrantedAuthority[] gas = new GrantedAuthority[1];
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gas[0] = new GrantedAuthorityImpl("ROLE_AUTHENTICATED");
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UserDetails ud = new User(userName, "", true, true, true, true, gas);
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return ud;
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}
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/**
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* Explicitly set the current authentication.
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*
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* @param authentication
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* Authentication
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*/
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public Authentication setCurrentAuthentication(Authentication authentication)
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{
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Context context = ContextHolder.getContext();
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SecureContext sc = null;
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if ((context == null) || !(context instanceof SecureContext))
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{
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sc = new SecureContextImpl();
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ContextHolder.setContext(sc);
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}
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else
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{
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sc = (SecureContext) context;
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}
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authentication.setAuthenticated(true);
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sc.setAuthentication(authentication);
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return authentication;
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}
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/**
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* Get the current authentication context
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*
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* @return Authentication
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* @throws AuthenticationException
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*/
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public Authentication getCurrentAuthentication() throws AuthenticationException
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{
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Context context = ContextHolder.getContext();
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if ((context == null) || !(context instanceof SecureContext))
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{
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return null;
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}
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return ((SecureContext) context).getAuthentication();
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}
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/**
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* Get the current user name.
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*
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* @return String
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* @throws AuthenticationException
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*/
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public String getCurrentUserName() throws AuthenticationException
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{
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Context context = ContextHolder.getContext();
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if ((context == null) || !(context instanceof SecureContext))
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{
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return null;
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}
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return getUserName(((SecureContext) context).getAuthentication());
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}
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/**
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* Get the current user name
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*
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* @param authentication
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* Authentication
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* @return String
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*/
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private String getUserName(Authentication authentication)
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{
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String username = authentication.getPrincipal().toString();
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if (authentication.getPrincipal() instanceof UserDetails)
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{
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username = ((UserDetails) authentication.getPrincipal()).getUsername();
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}
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return username;
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}
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/**
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* Set the system user as the current user.
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*
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* @return Authentication
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*/
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public Authentication setSystemUserAsCurrentUser()
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{
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return setCurrentUser(SYSTEM_USER_NAME);
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}
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/**
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* Get the name of the system user
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*
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* @return String
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*/
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public String getSystemUserName()
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{
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return SYSTEM_USER_NAME;
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}
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/**
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* Get the name of the Guest User
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*/
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public String getGuestUserName()
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{
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return PermissionService.GUEST_AUTHORITY.toLowerCase();
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}
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/**
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* Set the guest user as the current user.
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*/
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public Authentication setGuestUserAsCurrentUser() throws AuthenticationException
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{
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if (allowGuestLogin == null)
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{
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if(implementationAllowsGuestLogin())
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{
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return setCurrentUser(PermissionService.GUEST_AUTHORITY);
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}
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else
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{
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throw new AuthenticationException("Guest authentication is not allowed");
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}
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}
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else
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{
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if(allowGuestLogin.booleanValue())
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{
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return setCurrentUser(PermissionService.GUEST_AUTHORITY);
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}
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else
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{
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throw new AuthenticationException("Guest authentication is not allowed");
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}
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}
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}
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protected abstract boolean implementationAllowsGuestLogin();
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/**
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* Remove the current security information
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*/
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public void clearCurrentSecurityContext()
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{
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ContextHolder.setContext(null);
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}
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/**
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* The default is not to support Authentication token base authentication
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*/
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public Authentication authenticate(Authentication token) throws AuthenticationException
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{
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throw new AlfrescoRuntimeException("Authentication via token not supported");
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}
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/**
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* The should only be supported if getNTLMMode() is NTLMMode.MD4_PROVIDER.
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*/
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public String getMD4HashedPassword(String userName)
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{
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throw new UnsupportedOperationException();
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}
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/**
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* Get the NTML mode - none - supports MD4 hash to integrate - or it can asct as an NTLM authentication
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*/
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public NTLMMode getNTLMMode()
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{
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return NTLMMode.NONE;
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}
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}
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