security/runtime/org.argeo.security.jackrabbit/src/main/java/org/argeo/security/jackrabbit/ArgeoSecurityManager.java

   1 package org.argeo.security.jackrabbit;
   2
   3 import java.security.Principal;
   4 import java.util.ArrayList;
   5 import java.util.HashMap;
   6 import java.util.Iterator;
   7 import java.util.List;
   8 import java.util.Map;
   9 import java.util.Set;
  10
  11 import javax.jcr.Node;
  12 import javax.jcr.PropertyType;
  13 import javax.jcr.RepositoryException;
  14 import javax.jcr.Session;
  15 import javax.jcr.Value;
  16 import javax.jcr.ValueFactory;
  17 import javax.jcr.security.Privilege;
  18 import javax.security.auth.Subject;
  19
  20 import org.apache.commons.logging.Log;
  21 import org.apache.commons.logging.LogFactory;
  22 import org.apache.jackrabbit.api.security.JackrabbitAccessControlList;
  23 import org.apache.jackrabbit.api.security.JackrabbitAccessControlManager;
  24 import org.apache.jackrabbit.api.security.JackrabbitAccessControlPolicy;
  25 import org.apache.jackrabbit.api.security.user.Group;
  26 import org.apache.jackrabbit.api.security.user.User;
  27 import org.apache.jackrabbit.api.security.user.UserManager;
  28 import org.apache.jackrabbit.core.DefaultSecurityManager;
  29 import org.apache.jackrabbit.core.security.SecurityConstants;
  30 import org.apache.jackrabbit.core.security.SystemPrincipal;
  31 import org.apache.jackrabbit.core.security.authorization.WorkspaceAccessManager;
  32 import org.argeo.ArgeoException;
  33 import org.argeo.jcr.JcrUtils;
  34 import org.springframework.security.Authentication;
  35 import org.springframework.security.GrantedAuthority;
  36
  37 /** Intermediary class in order to have a consistent naming in config files. */
  38 public class ArgeoSecurityManager extends DefaultSecurityManager {
  39         public final static String HOME_BASE_PATH = "/home";
  40
  41         private Log log = LogFactory.getLog(ArgeoSecurityManager.class);
  42
  43         @Override
  44         /** Since this is called once when the session is created, we take the opportunity to synchronize Spring and Jackrabbit users and groups.*/
  45         public String getUserID(Subject subject, String workspaceName)
  46                         throws RepositoryException {
  47                 long begin = System.currentTimeMillis();
  48
  49                 if (!subject.getPrincipals(SystemPrincipal.class).isEmpty())
  50                         return super.getUserID(subject, workspaceName);
  51
  52                 Authentication authen;
  53                 Set<Authentication> authens = subject
  54                                 .getPrincipals(Authentication.class);
  55                 if (authens.size() == 0)
  56                         throw new ArgeoException("No Spring authentication found in "
  57                                         + subject);
  58                 else
  59                         authen = authens.iterator().next();
  60
  61                 UserManager systemUm = getSystemUserManager(workspaceName);
  62
  63                 String userId = authen.getName();
  64                 User user = (User) systemUm.getAuthorizable(userId);
  65                 if (user == null) {
  66                         user = systemUm.createUser(userId, authen.getCredentials()
  67                                         .toString(), authen, null);
  68                         log.info(userId + " added as " + user);
  69                 }
  70
  71                 setHomeNodeAuthorizations(user);
  72
  73                 // process groups
  74                 List<String> userGroupIds = new ArrayList<String>();
  75                 for (GrantedAuthority ga : authen.getAuthorities()) {
  76                         Group group = (Group) systemUm.getAuthorizable(ga.getAuthority());
  77                         if (group == null) {
  78                                 group = systemUm.createGroup(ga.getAuthority());
  79                                 log.info(ga.getAuthority() + " added as " + group);
  80                         }
  81                         if (!group.isMember(user))
  82                                 group.addMember(user);
  83                         userGroupIds.add(ga.getAuthority());
  84
  85                 }
  86
  87                 // check if user has not been removed from some groups
  88                 for (Iterator<Group> it = user.declaredMemberOf(); it.hasNext();) {
  89                         Group group = it.next();
  90                         if (!userGroupIds.contains(group.getID()))
  91                                 group.removeMember(user);
  92                 }
  93
  94                 if (log.isTraceEnabled())
  95                         log.trace("Spring and Jackrabbit Security synchronized for user "
  96                                         + userId + " in " + (System.currentTimeMillis() - begin)
  97                                         + " ms");
  98                 return userId;
  99         }
 100
 101         protected synchronized void setHomeNodeAuthorizations(User user) {
 102                 // give all privileges on user home
 103                 // FIXME: fails on an empty repo
 104                 String userId = "<not yet set>";
 105                 try {
 106                         userId = user.getID();
 107                         Node userHome = null;
 108                         try {
 109                                 userHome = JcrUtils.getUserHome(getSystemSession(), userId);
 110                                 if (userHome == null)
 111                                         userHome = JcrUtils.createUserHome(getSystemSession(),
 112                                                         HOME_BASE_PATH, userId);
 113                         } catch (Exception e) {
 114                                 // silent
 115                         }
 116
 117                         if (userHome != null) {
 118                                 String path = userHome.getPath();
 119                                 Principal principal = user.getPrincipal();
 120
 121                                 JackrabbitAccessControlManager acm = (JackrabbitAccessControlManager) getSystemSession()
 122                                                 .getAccessControlManager();
 123                                 JackrabbitAccessControlPolicy[] ps = acm
 124                                                 .getApplicablePolicies(principal);
 125                                 if (ps.length == 0) {
 126                                         // log.warn("No ACL found for " + user);
 127                                         return;
 128                                 }
 129
 130                                 JackrabbitAccessControlList list = (JackrabbitAccessControlList) ps[0];
 131
 132                                 // add entry
 133                                 Privilege[] privileges = new Privilege[] { acm
 134                                                 .privilegeFromName(Privilege.JCR_ALL) };
 135                                 Map<String, Value> restrictions = new HashMap<String, Value>();
 136                                 ValueFactory vf = getSystemSession().getValueFactory();
 137                                 restrictions.put("rep:nodePath",
 138                                                 vf.createValue(path, PropertyType.PATH));
 139                                 restrictions.put("rep:glob", vf.createValue("*"));
 140                                 list.addEntry(principal, privileges, true /* allow or deny */,
 141                                                 restrictions);
 142                         }
 143                 } catch (Exception e) {
 144                         e.printStackTrace();
 145                         log.warn("Cannot set authorization on user node for " + userId
 146                                         + ": " + e.getMessage());
 147                 }
 148
 149         }
 150
 151         @Override
 152         protected WorkspaceAccessManager createDefaultWorkspaceAccessManager() {
 153                 WorkspaceAccessManager wam = super
 154                                 .createDefaultWorkspaceAccessManager();
 155                 return new ArgeoWorkspaceAccessManagerImpl(wam);
 156         }
 157
 158         private class ArgeoWorkspaceAccessManagerImpl implements SecurityConstants,
 159                         WorkspaceAccessManager {
 160                 private final WorkspaceAccessManager wam;
 161
 162                 // private String defaultWorkspace;
 163
 164                 public ArgeoWorkspaceAccessManagerImpl(WorkspaceAccessManager wam) {
 165                         super();
 166                         this.wam = wam;
 167                 }
 168
 169                 public void init(Session systemSession) throws RepositoryException {
 170                         wam.init(systemSession);
 171                         // defaultWorkspace = ((RepositoryImpl) getRepository()).getConfig()
 172                         // .getDefaultWorkspaceName();
 173                 }
 174
 175                 public void close() throws RepositoryException {
 176                 }
 177
 178                 public boolean grants(Set<Principal> principals, String workspaceName)
 179                                 throws RepositoryException {
 180                         // everybody has access to all workspaces
 181                         // TODO: implements finer access to workspaces
 182                         return true;
 183
 184                         // anonymous has access to the default workspace (required for
 185                         // remoting which does a default login when initializing the
 186                         // repository)
 187                         // Boolean anonymous = false;
 188                         // for (Principal principal : principals)
 189                         // if (principal instanceof AnonymousPrincipal)
 190                         // anonymous = true;
 191                         //
 192                         // if (anonymous && workspaceName.equals(defaultWorkspace))
 193                         // return true;
 194                         // else
 195                         // return wam.grants(principals, workspaceName);
 196                 }
 197         }
 198
 199 }