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.AnonymousPrincipal;
  30 import org.apache.jackrabbit.core.security.SecurityConstants;
  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         private Log log = LogFactory.getLog(ArgeoSecurityManager.class);
  40
  41         /**
  42          * Since this is called once when the session is created, we take the
  43          * opportunity to make sure that Jackrabbit users and groups reflect Spring
  44          * Security name and authorities.
  45          */
  46         @Override
  47         public String getUserID(Subject subject, String workspaceName)
  48                         throws RepositoryException {
  49                 long begin = System.currentTimeMillis();
  50
  51                 if (log.isTraceEnabled())
  52                         log.trace(subject);
  53                 // skip anonymous user (no rights)
  54                 if (!subject.getPrincipals(AnonymousPrincipal.class).isEmpty())
  55                         return super.getUserID(subject, workspaceName);
  56                 // skip Jackrabbit system user (all rights)
  57                 if (!subject.getPrincipals(ArgeoSystemPrincipal.class).isEmpty())
  58                         return super.getUserID(subject, workspaceName);
  59
  60                 Authentication authen;
  61                 Set<Authentication> authens = subject
  62                                 .getPrincipals(Authentication.class);
  63                 if (authens.size() == 0)
  64                         throw new ArgeoException("No Spring authentication found in "
  65                                         + subject);
  66                 else
  67                         authen = authens.iterator().next();
  68
  69                 UserManager systemUm = getSystemUserManager(workspaceName);
  70
  71                 String userId = authen.getName();
  72                 User user = (User) systemUm.getAuthorizable(userId);
  73                 if (user == null) {
  74                         user = systemUm.createUser(userId, authen.getCredentials()
  75                                         .toString(), authen, null);
  76                         JcrUtils.createUserHomeIfNeeded(getSystemSession(), userId);
  77                         getSystemSession().save();
  78                         setSecurityHomeAuthorizations(user);
  79                         log.info(userId + " added as " + user);
  80                 }
  81
  82                 // process groups
  83                 List<String> userGroupIds = new ArrayList<String>();
  84                 for (GrantedAuthority ga : authen.getAuthorities()) {
  85                         Group group = (Group) systemUm.getAuthorizable(ga.getAuthority());
  86                         if (group == null) {
  87                                 group = systemUm.createGroup(ga.getAuthority());
  88                                 log.info(ga.getAuthority() + " added as " + group);
  89                         }
  90                         if (!group.isMember(user))
  91                                 group.addMember(user);
  92                         userGroupIds.add(ga.getAuthority());
  93                 }
  94
  95                 // check if user has not been removed from some groups
  96                 for (Iterator<Group> it = user.declaredMemberOf(); it.hasNext();) {
  97                         Group group = it.next();
  98                         if (!userGroupIds.contains(group.getID()))
  99                                 group.removeMember(user);
 100                 }
 101
 102                 if (log.isTraceEnabled())
 103                         log.trace("Spring and Jackrabbit Security synchronized for user "
 104                                         + userId + " in " + (System.currentTimeMillis() - begin)
 105                                         + " ms");
 106                 return userId;
 107         }
 108
 109         protected synchronized void setSecurityHomeAuthorizations(User user) {
 110                 // give read privileges on user security home
 111                 String userId = "<not yet set>";
 112                 try {
 113                         userId = user.getID();
 114                         Node userHome = JcrUtils.getUserHome(getSystemSession(), userId);
 115                         if (userHome == null)
 116                                 throw new ArgeoException("No security home available for user "
 117                                                 + userId);
 118
 119                         String path = userHome.getPath();
 120                         Principal principal = user.getPrincipal();
 121
 122                         JackrabbitAccessControlManager acm = (JackrabbitAccessControlManager) getSystemSession()
 123                                         .getAccessControlManager();
 124                         JackrabbitAccessControlPolicy[] ps = acm
 125                                         .getApplicablePolicies(principal);
 126                         if (ps.length == 0) {
 127                                 // log.warn("No ACL found for " + user);
 128                                 return;
 129                         }
 130
 131                         JackrabbitAccessControlList list = (JackrabbitAccessControlList) ps[0];
 132
 133                         // add entry
 134                         Privilege[] privileges = new Privilege[] { acm
 135                                         .privilegeFromName(Privilege.JCR_READ) };
 136                         Map<String, Value> restrictions = new HashMap<String, Value>();
 137                         ValueFactory vf = getSystemSession().getValueFactory();
 138                         restrictions.put("rep:nodePath",
 139                                         vf.createValue(path, PropertyType.PATH));
 140                         restrictions.put("rep:glob", vf.createValue("*"));
 141                         list.addEntry(principal, privileges, true /* allow or deny */,
 142                                         restrictions);
 143                 } catch (Exception e) {
 144                         e.printStackTrace();
 145                         throw new ArgeoException(
 146                                         "Cannot set authorization on security home for " + userId
 147                                                         + ": " + e.getMessage());
 148                 }
 149
 150         }
 151
 152         @Override
 153         protected WorkspaceAccessManager createDefaultWorkspaceAccessManager() {
 154                 WorkspaceAccessManager wam = super
 155                                 .createDefaultWorkspaceAccessManager();
 156                 return new ArgeoWorkspaceAccessManagerImpl(wam);
 157         }
 158
 159         private class ArgeoWorkspaceAccessManagerImpl implements SecurityConstants,
 160                         WorkspaceAccessManager {
 161                 private final WorkspaceAccessManager wam;
 162
 163                 // private String defaultWorkspace;
 164
 165                 public ArgeoWorkspaceAccessManagerImpl(WorkspaceAccessManager wam) {
 166                         super();
 167                         this.wam = wam;
 168                 }
 169
 170                 public void init(Session systemSession) throws RepositoryException {
 171                         wam.init(systemSession);
 172                         // defaultWorkspace = ((RepositoryImpl) getRepository()).getConfig()
 173                         // .getDefaultWorkspaceName();
 174                 }
 175
 176                 public void close() throws RepositoryException {
 177                 }
 178
 179                 public boolean grants(Set<Principal> principals, String workspaceName)
 180                                 throws RepositoryException {
 181                         // everybody has access to all workspaces
 182                         // TODO: implements finer access to workspaces
 183                         return true;
 184
 185                         // anonymous has access to the default workspace (required for
 186                         // remoting which does a default login when initializing the
 187                         // repository)
 188                         // Boolean anonymous = false;
 189                         // for (Principal principal : principals)
 190                         // if (principal instanceof AnonymousPrincipal)
 191                         // anonymous = true;
 192                         //
 193                         // if (anonymous && workspaceName.equals(defaultWorkspace))
 194                         // return true;
 195                         // else
 196                         // return wam.grants(principals, workspaceName);
 197                 }
 198         }
 199
 200 }