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.AccessControlPolicy;
  18 import javax.jcr.security.AccessControlPolicyIterator;
  19 import javax.jcr.security.Privilege;
  20 import javax.security.auth.Subject;
  21
  22 import org.apache.commons.logging.Log;
  23 import org.apache.commons.logging.LogFactory;
  24 import org.apache.jackrabbit.api.security.JackrabbitAccessControlList;
  25 import org.apache.jackrabbit.api.security.JackrabbitAccessControlManager;
  26 import org.apache.jackrabbit.api.security.JackrabbitAccessControlPolicy;
  27 import org.apache.jackrabbit.api.security.user.Group;
  28 import org.apache.jackrabbit.api.security.user.User;
  29 import org.apache.jackrabbit.api.security.user.UserManager;
  30 import org.apache.jackrabbit.core.DefaultSecurityManager;
  31 import org.apache.jackrabbit.core.security.SecurityConstants;
  32 import org.apache.jackrabbit.core.security.SystemPrincipal;
  33 import org.apache.jackrabbit.core.security.authorization.WorkspaceAccessManager;
  34 import org.argeo.ArgeoException;
  35 import org.argeo.jcr.JcrUtils;
  36 import org.springframework.security.Authentication;
  37 import org.springframework.security.GrantedAuthority;
  38
  39 /** Intermediary class in order to have a consistent naming in config files. */
  40 public class ArgeoSecurityManager extends DefaultSecurityManager {
  41         public final static String HOME_BASE_PATH = "/home";
  42
  43         private Log log = LogFactory.getLog(ArgeoSecurityManager.class);
  44
  45         @Override
  46         /** Since this is called once when the session is created, we take the opportunity to synchronize Spring and Jackrabbit users and groups.*/
  47         public String getUserID(Subject subject, String workspaceName)
  48                         throws RepositoryException {
  49                 long begin = System.currentTimeMillis();
  50
  51                 if (!subject.getPrincipals(SystemPrincipal.class).isEmpty())
  52                         return super.getUserID(subject, workspaceName);
  53
  54                 Authentication authen;
  55                 Set<Authentication> authens = subject
  56                                 .getPrincipals(Authentication.class);
  57                 if (authens.size() == 0)
  58                         throw new ArgeoException("No Spring authentication found in "
  59                                         + subject);
  60                 else
  61                         authen = authens.iterator().next();
  62
  63                 UserManager systemUm = getSystemUserManager(workspaceName);
  64
  65                 String userId = authen.getName();
  66                 User user = (User) systemUm.getAuthorizable(userId);
  67                 if (user == null) {
  68                         user = systemUm.createUser(userId, authen.getCredentials()
  69                                         .toString(), authen, null);
  70                         log.info(userId + " added as " + user);
  71                 }
  72
  73                 setHomeNodeAuthorizations(user);
  74
  75                 // process groups
  76                 List<String> userGroupIds = new ArrayList<String>();
  77                 for (GrantedAuthority ga : authen.getAuthorities()) {
  78                         Group group = (Group) systemUm.getAuthorizable(ga.getAuthority());
  79                         if (group == null) {
  80                                 group = systemUm.createGroup(ga.getAuthority());
  81                                 log.info(ga.getAuthority() + " added as " + group);
  82                         }
  83                         if (!group.isMember(user))
  84                                 group.addMember(user);
  85                         userGroupIds.add(ga.getAuthority());
  86
  87                 }
  88
  89                 // check if user has not been removed from some groups
  90                 for (Iterator<Group> it = user.declaredMemberOf(); it.hasNext();) {
  91                         Group group = it.next();
  92                         if (!userGroupIds.contains(group.getID()))
  93                                 group.removeMember(user);
  94                 }
  95
  96                 if (log.isTraceEnabled())
  97                         log.trace("Spring and Jackrabbit Security synchronized for user "
  98                                         + userId + " in " + (System.currentTimeMillis() - begin)
  99                                         + " ms");
 100                 return userId;
 101         }
 102
 103         protected void setHomeNodeAuthorizations(User user) {
 104                 // give all privileges on user home
 105                 // FIXME: fails on an empty repo
 106                 String userId = "<not yet set>";
 107                 try {
 108                         userId = user.getID();
 109                         Node userHome = null;
 110                         try {
 111                                 userHome = JcrUtils.getUserHome(getSystemSession(), userId);
 112                                 if (userHome == null)
 113                                         userHome = JcrUtils.createUserHome(getSystemSession(),
 114                                                         HOME_BASE_PATH, userId);
 115                         } catch (Exception e) {
 116                                 // silent
 117                         }
 118
 119                         if (userHome != null) {
 120                                 String path = userHome.getPath();
 121                                 Principal principal = user.getPrincipal();
 122
 123                                 JackrabbitAccessControlManager acm = (JackrabbitAccessControlManager) getSystemSession()
 124                                                 .getAccessControlManager();
 125                                 JackrabbitAccessControlPolicy[] ps = acm
 126                                                 .getApplicablePolicies(principal);
 127                                 if (ps.length == 0) {
 128                                         log.warn("No ACL found for " + user);
 129                                         return;
 130                                 }
 131
 132                                 JackrabbitAccessControlList list = (JackrabbitAccessControlList) ps[0];
 133
 134                                 // add entry
 135                                 Privilege[] privileges = new Privilege[] { acm
 136                                                 .privilegeFromName(Privilege.JCR_ALL) };
 137                                 Map<String, Value> restrictions = new HashMap<String, Value>();
 138                                 ValueFactory vf = getSystemSession().getValueFactory();
 139                                 restrictions.put("rep:nodePath",
 140                                                 vf.createValue(path, PropertyType.PATH));
 141                                 restrictions.put("rep:glob", vf.createValue("*"));
 142                                 list.addEntry(principal, privileges, true /* allow or deny */,
 143                                                 restrictions);
 144                         }
 145                 } catch (Exception e) {
 146                         e.printStackTrace();
 147                         log.warn("Cannot set authorization on user node for " + userId
 148                                         + ": " + e.getMessage());
 149                 }
 150
 151         }
 152
 153         @Override
 154         protected WorkspaceAccessManager createDefaultWorkspaceAccessManager() {
 155                 WorkspaceAccessManager wam = super
 156                                 .createDefaultWorkspaceAccessManager();
 157                 return new ArgeoWorkspaceAccessManagerImpl(wam);
 158         }
 159
 160         private class ArgeoWorkspaceAccessManagerImpl implements SecurityConstants,
 161                         WorkspaceAccessManager {
 162                 private final WorkspaceAccessManager wam;
 163
 164                 // private String defaultWorkspace;
 165
 166                 public ArgeoWorkspaceAccessManagerImpl(WorkspaceAccessManager wam) {
 167                         super();
 168                         this.wam = wam;
 169                 }
 170
 171                 public void init(Session systemSession) throws RepositoryException {
 172                         wam.init(systemSession);
 173                         // defaultWorkspace = ((RepositoryImpl) getRepository()).getConfig()
 174                         // .getDefaultWorkspaceName();
 175                 }
 176
 177                 public void close() throws RepositoryException {
 178                 }
 179
 180                 public boolean grants(Set<Principal> principals, String workspaceName)
 181                                 throws RepositoryException {
 182                         // everybody has access to all workspaces
 183                         // TODO: implements finer access to workspaces
 184                         return true;
 185
 186                         // anonymous has access to the default workspace (required for
 187                         // remoting which does a default login when initializing the
 188                         // repository)
 189                         // Boolean anonymous = false;
 190                         // for (Principal principal : principals)
 191                         // if (principal instanceof AnonymousPrincipal)
 192                         // anonymous = true;
 193                         //
 194                         // if (anonymous && workspaceName.equals(defaultWorkspace))
 195                         // return true;
 196                         // else
 197                         // return wam.grants(principals, workspaceName);
 198                 }
 199         }
 200
 201 }