Make CmsUserManager an API.
[lgpl/argeo-commons.git] / org.argeo.cms / src / org / argeo / cms / internal / runtime / CmsUserManagerImpl.java
diff --git a/org.argeo.cms/src/org/argeo/cms/internal/runtime/CmsUserManagerImpl.java b/org.argeo.cms/src/org/argeo/cms/internal/runtime/CmsUserManagerImpl.java
new file mode 100644 (file)
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+package org.argeo.cms.internal.runtime;
+
+import static org.argeo.api.acr.ldap.LdapAttrs.cn;
+import static org.argeo.api.acr.ldap.LdapAttrs.description;
+import static org.argeo.api.acr.ldap.LdapAttrs.owner;
+
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Dictionary;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.NavigableMap;
+import java.util.Objects;
+import java.util.Set;
+import java.util.TreeMap;
+import java.util.TreeSet;
+import java.util.UUID;
+
+import javax.naming.InvalidNameException;
+import javax.naming.ldap.LdapName;
+import javax.security.auth.Subject;
+import javax.xml.namespace.QName;
+
+import org.argeo.api.acr.NamespaceUtils;
+import org.argeo.api.acr.ldap.LdapAttrs;
+import org.argeo.api.acr.ldap.NamingUtils;
+import org.argeo.api.cms.CmsConstants;
+import org.argeo.api.cms.CmsLog;
+import org.argeo.api.cms.directory.CmsGroup;
+import org.argeo.api.cms.directory.CmsUser;
+import org.argeo.api.cms.directory.CmsUserManager;
+import org.argeo.api.cms.directory.HierarchyUnit;
+import org.argeo.api.cms.directory.UserDirectory;
+import org.argeo.api.cms.transaction.WorkTransaction;
+import org.argeo.cms.auth.CurrentUser;
+import org.argeo.cms.auth.UserAdminUtils;
+import org.argeo.cms.directory.ldap.LdapEntry;
+import org.argeo.cms.directory.ldap.SharedSecret;
+import org.argeo.cms.osgi.useradmin.AggregatingUserAdmin;
+import org.argeo.cms.osgi.useradmin.TokenUtils;
+import org.argeo.cms.runtime.DirectoryConf;
+import org.osgi.framework.InvalidSyntaxException;
+import org.osgi.service.useradmin.Authorization;
+import org.osgi.service.useradmin.Group;
+import org.osgi.service.useradmin.Role;
+import org.osgi.service.useradmin.User;
+import org.osgi.service.useradmin.UserAdmin;
+
+/**
+ * Canonical implementation of the people {@link CmsUserManager}. Wraps
+ * interaction with users and groups.
+ * 
+ * In a *READ-ONLY* mode. We want to be able to:
+ * <ul>
+ * <li>Retrieve my user and corresponding information (main info,
+ * groups...)</li>
+ * <li>List all local groups (not the system roles)</li>
+ * <li>If sufficient rights: retrieve a given user and its information</li>
+ * </ul>
+ */
+public class CmsUserManagerImpl implements CmsUserManager {
+       private final static CmsLog log = CmsLog.getLog(CmsUserManagerImpl.class);
+
+       private UserAdmin userAdmin;
+//     private Map<String, String> serviceProperties;
+       private WorkTransaction userTransaction;
+
+       private final String[] knownProps = { LdapAttrs.cn.name(), LdapAttrs.sn.name(), LdapAttrs.givenName.name(),
+                       LdapAttrs.uid.name() };
+
+//     private Map<UserDirectory, Hashtable<String, Object>> userDirectories = Collections
+//                     .synchronizedMap(new LinkedHashMap<>());
+
+       private Set<UserDirectory> userDirectories = new HashSet<>();
+
+       public void start() {
+               log.debug(() -> "CMS user manager available");
+       }
+
+       public void stop() {
+
+       }
+
+       @Override
+       public String getMyMail() {
+               return getUserMail(CurrentUser.getUsername());
+       }
+
+       @Override
+       public Role[] getRoles(String filter) {
+               try {
+                       return userAdmin.getRoles(filter);
+               } catch (InvalidSyntaxException e) {
+                       throw new IllegalArgumentException("Invalid filter " + filter, e);
+               }
+       }
+
+       // ALL USER: WARNING access to this will be later reduced
+
+       /** Retrieve a user given his dn, or <code>null</code> if it doesn't exist. */
+       public CmsUser getUser(String dn) {
+               return (CmsUser) getUserAdmin().getRole(dn);
+       }
+
+       /** Can be a group or a user */
+       public String getUserDisplayName(String dn) {
+               // FIXME: during initialisation phase, the system logs "admin" as user
+               // name rather than the corresponding dn
+               if ("admin".equals(dn))
+                       return "System Administrator";
+               else
+                       return UserAdminUtils.getUserDisplayName(getUserAdmin(), dn);
+       }
+
+       @Override
+       public String getUserMail(String dn) {
+               return UserAdminUtils.getUserMail(getUserAdmin(), dn);
+       }
+
+       /** Lists all roles of the given user */
+       @Override
+       public String[] getUserRoles(String dn) {
+               Authorization currAuth = getUserAdmin().getAuthorization(getUser(dn));
+               return currAuth.getRoles();
+       }
+
+       @Override
+       public boolean isUserInRole(String userDn, String roleDn) {
+               String[] roles = getUserRoles(userDn);
+               for (String role : roles) {
+                       if (role.equalsIgnoreCase(roleDn))
+                               return true;
+               }
+               return false;
+       }
+
+       public Set<CmsUser> listUsersInGroup(String groupDn, String filter) {
+               Group group = (Group) userAdmin.getRole(groupDn);
+               if (group == null)
+                       throw new IllegalArgumentException("Group " + groupDn + " not found");
+               Set<CmsUser> users = new HashSet<>();
+               addUsers(users, group, filter);
+               return users;
+       }
+
+//     @Override
+//     public Set<User> listAccounts(HierarchyUnit hierarchyUnit, boolean deep) {
+//             if(!hierarchyUnit.isFunctional())
+//                     throw new IllegalArgumentException("Hierarchy unit "+hierarchyUnit.getBase()+" is not functional");
+//             UserDirectory directory = (UserDirectory)hierarchyUnit.getDirectory();
+//             Set<User> res = new HashSet<>();
+//             for(HierarchyUnit technicalHu:hierarchyUnit.getDirectHierarchyUnits(false)) {
+//                     if(technicalHu.isFunctional())
+//                             continue;
+//                     for(Role role:directory.getHierarchyUnitRoles(technicalHu, null, false)) {
+//                             if(role)
+//                     }
+//             }
+//             return res;
+//     }
+
+       /** Recursively add users to list */
+       private void addUsers(Set<CmsUser> users, Group group, String filter) {
+               Role[] roles = group.getMembers();
+               for (Role role : roles) {
+                       if (role.getType() == Role.GROUP) {
+                               addUsers(users, (CmsGroup) role, filter);
+                       } else if (role.getType() == Role.USER) {
+                               if (match(role, filter))
+                                       users.add((CmsUser) role);
+                       } else {
+                               // ignore
+                       }
+               }
+       }
+
+       public List<CmsUser> listGroups(String filter, boolean includeUsers, boolean includeSystemRoles) {
+               Role[] roles = null;
+               try {
+                       roles = getUserAdmin().getRoles(filter);
+               } catch (InvalidSyntaxException e) {
+                       throw new IllegalArgumentException("Unable to get roles with filter: " + filter, e);
+               }
+
+               List<CmsUser> users = new ArrayList<>();
+               for (Role role : roles) {
+                       if ((includeUsers && role.getType() == Role.USER || role.getType() == Role.GROUP) && !users.contains(role)
+                                       && (includeSystemRoles
+                                                       || !role.getName().toLowerCase().endsWith(CmsConstants.SYSTEM_ROLES_BASEDN))) {
+                               if (match(role, filter))
+                                       users.add((CmsUser) role);
+                       }
+               }
+               return users;
+       }
+
+       private boolean match(Role role, String filter) {
+               boolean doFilter = filter != null && !"".equals(filter);
+               if (doFilter) {
+                       for (String prop : knownProps) {
+                               Object currProp = null;
+                               try {
+                                       currProp = role.getProperties().get(prop);
+                               } catch (Exception e) {
+                                       throw e;
+                               }
+                               if (currProp != null) {
+                                       String currPropStr = ((String) currProp).toLowerCase();
+                                       if (currPropStr.contains(filter.toLowerCase())) {
+                                               return true;
+                                       }
+                               }
+                       }
+                       return false;
+               } else
+                       return true;
+       }
+
+       @Override
+       public CmsUser getUserFromLocalId(String localId) {
+               CmsUser user = (CmsUser) getUserAdmin().getUser(LdapAttrs.uid.name(), localId);
+               if (user == null)
+                       user = (CmsUser) getUserAdmin().getUser(LdapAttrs.cn.name(), localId);
+               return user;
+       }
+
+       @Override
+       public String buildDefaultDN(String localId, int type) {
+               return buildDistinguishedName(localId, getDefaultDomainName(), type);
+       }
+
+       /*
+        * EDITION
+        */
+       @Override
+       public CmsUser createUser(String username, Map<String, Object> properties, Map<String, Object> credentials) {
+               try {
+                       userTransaction.begin();
+                       CmsUser user = (CmsUser) userAdmin.createRole(username, Role.USER);
+                       if (properties != null) {
+                               for (String key : properties.keySet())
+                                       user.getProperties().put(key, properties.get(key));
+                       }
+                       if (credentials != null) {
+                               for (String key : credentials.keySet())
+                                       user.getCredentials().put(key, credentials.get(key));
+                       }
+                       userTransaction.commit();
+                       return user;
+               } catch (Exception e) {
+                       try {
+                               userTransaction.rollback();
+                       } catch (Exception e1) {
+                               log.error("Could not roll back", e1);
+                       }
+                       if (e instanceof RuntimeException)
+                               throw (RuntimeException) e;
+                       else
+                               throw new RuntimeException("Cannot create user " + username, e);
+               }
+       }
+
+       @Override
+       public CmsGroup getOrCreateGroup(HierarchyUnit groups, String commonName) {
+               try {
+                       String dn = LdapAttrs.cn.name() + "=" + commonName + "," + groups.getBase();
+                       CmsGroup group = (CmsGroup) getUserAdmin().getRole(dn);
+                       if (group != null)
+                               return group;
+                       userTransaction.begin();
+                       group = (CmsGroup) userAdmin.createRole(dn, Role.GROUP);
+                       userTransaction.commit();
+                       return group;
+               } catch (Exception e) {
+                       try {
+                               userTransaction.rollback();
+                       } catch (Exception e1) {
+                               log.error("Could not roll back", e1);
+                       }
+                       if (e instanceof RuntimeException)
+                               throw (RuntimeException) e;
+                       else
+                               throw new RuntimeException("Cannot create group " + commonName + " in " + groups, e);
+               }
+       }
+
+       @Override
+       public CmsGroup getOrCreateSystemRole(HierarchyUnit roles, QName systemRole) {
+               try {
+                       String dn = LdapAttrs.cn.name() + "=" + NamespaceUtils.toPrefixedName(systemRole) + "," + roles.getBase();
+                       CmsGroup group = (CmsGroup) getUserAdmin().getRole(dn);
+                       if (group != null)
+                               return group;
+                       userTransaction.begin();
+                       group = (CmsGroup) userAdmin.createRole(dn, Role.GROUP);
+                       userTransaction.commit();
+                       return group;
+               } catch (Exception e) {
+                       try {
+                               userTransaction.rollback();
+                       } catch (Exception e1) {
+                               log.error("Could not roll back", e1);
+                       }
+                       if (e instanceof RuntimeException)
+                               throw (RuntimeException) e;
+                       else
+                               throw new RuntimeException("Cannot create system role " + systemRole + " in " + roles, e);
+               }
+       }
+
+       @Override
+       public HierarchyUnit getOrCreateHierarchyUnit(UserDirectory directory, String path) {
+               HierarchyUnit hi = directory.getHierarchyUnit(path);
+               if (hi != null)
+                       return hi;
+               try {
+                       userTransaction.begin();
+                       HierarchyUnit hierarchyUnit = directory.createHierarchyUnit(path);
+                       userTransaction.commit();
+                       return hierarchyUnit;
+               } catch (Exception e1) {
+                       try {
+                               if (!userTransaction.isNoTransactionStatus())
+                                       userTransaction.rollback();
+                       } catch (Exception e2) {
+                               if (log.isTraceEnabled())
+                                       log.trace("Cannot rollback transaction", e2);
+                       }
+                       throw new RuntimeException("Cannot create hierarchy unit " + path + " in directory " + directory, e1);
+               }
+       }
+
+       @Override
+       public void addObjectClasses(Role role, Set<String> objectClasses, Map<String, Object> additionalProperties) {
+               try {
+                       userTransaction.begin();
+                       LdapEntry.addObjectClasses(role.getProperties(), objectClasses);
+                       for (String key : additionalProperties.keySet()) {
+                               role.getProperties().put(key, additionalProperties.get(key));
+                       }
+                       userTransaction.commit();
+               } catch (Exception e1) {
+                       try {
+                               if (!userTransaction.isNoTransactionStatus())
+                                       userTransaction.rollback();
+                       } catch (Exception e2) {
+                               if (log.isTraceEnabled())
+                                       log.trace("Cannot rollback transaction", e2);
+                       }
+                       throw new RuntimeException("Cannot add object classes " + objectClasses + " to " + role, e1);
+               }
+       }
+
+       @Override
+       public void addObjectClasses(HierarchyUnit hierarchyUnit, Set<String> objectClasses,
+                       Map<String, Object> additionalProperties) {
+               try {
+                       userTransaction.begin();
+                       LdapEntry.addObjectClasses(hierarchyUnit.getProperties(), objectClasses);
+                       for (String key : additionalProperties.keySet()) {
+                               hierarchyUnit.getProperties().put(key, additionalProperties.get(key));
+                       }
+                       userTransaction.commit();
+               } catch (Exception e1) {
+                       try {
+                               if (!userTransaction.isNoTransactionStatus())
+                                       userTransaction.rollback();
+                       } catch (Exception e2) {
+                               if (log.isTraceEnabled())
+                                       log.trace("Cannot rollback transaction", e2);
+                       }
+                       throw new RuntimeException("Cannot add object classes " + objectClasses + " to " + hierarchyUnit, e1);
+               }
+       }
+
+       @Override
+       public void edit(Runnable action) {
+               Objects.requireNonNull(action);
+               try {
+                       userTransaction.begin();
+                       action.run();
+                       userTransaction.commit();
+               } catch (Exception e1) {
+                       try {
+                               if (!userTransaction.isNoTransactionStatus())
+                                       userTransaction.rollback();
+                       } catch (Exception e2) {
+                               if (log.isTraceEnabled())
+                                       log.trace("Cannot rollback transaction", e2);
+                       }
+                       throw new RuntimeException("Cannot edit", e1);
+               }
+       }
+
+       @Override
+       public void addMember(CmsGroup group, Role role) {
+               try {
+                       userTransaction.begin();
+                       group.addMember(role);
+                       userTransaction.commit();
+               } catch (Exception e1) {
+                       try {
+                               if (!userTransaction.isNoTransactionStatus())
+                                       userTransaction.rollback();
+                       } catch (Exception e2) {
+                               if (log.isTraceEnabled())
+                                       log.trace("Cannot rollback transaction", e2);
+                       }
+                       throw new RuntimeException("Cannot add object classes " + role + " to group " + group, e1);
+               }
+       }
+
+       @Override
+       public String getDefaultDomainName() {
+               Map<String, String> dns = getKnownBaseDns(true);
+               if (dns.size() == 1)
+                       return dns.keySet().iterator().next();
+               else
+                       throw new IllegalStateException("Current context contains " + dns.size() + " base dns: "
+                                       + dns.keySet().toString() + ". Unable to chose a default one.");
+       }
+
+       public Map<String, String> getKnownBaseDns(boolean onlyWritable) {
+               Map<String, String> dns = new HashMap<String, String>();
+               for (UserDirectory userDirectory : userDirectories) {
+                       Boolean readOnly = userDirectory.isReadOnly();
+                       String baseDn = userDirectory.getBase();
+
+                       if (onlyWritable && readOnly)
+                               continue;
+                       if (baseDn.equalsIgnoreCase(CmsConstants.SYSTEM_ROLES_BASEDN))
+                               continue;
+                       if (baseDn.equalsIgnoreCase(CmsConstants.TOKENS_BASEDN))
+                               continue;
+                       dns.put(baseDn, DirectoryConf.propertiesAsUri(userDirectory.getProperties()).toString());
+
+               }
+               return dns;
+       }
+
+       public Set<UserDirectory> getUserDirectories() {
+               TreeSet<UserDirectory> res = new TreeSet<>((o1, o2) -> o1.getBase().compareTo(o2.getBase()));
+               res.addAll(userDirectories);
+               return res;
+       }
+
+       public String buildDistinguishedName(String localId, String baseDn, int type) {
+               Map<String, String> dns = getKnownBaseDns(true);
+               Dictionary<String, ?> props = DirectoryConf.uriAsProperties(dns.get(baseDn));
+               String dn = null;
+               if (Role.GROUP == type)
+                       dn = LdapAttrs.cn.name() + "=" + localId + "," + DirectoryConf.groupBase.getValue(props) + "," + baseDn;
+               else if (Role.USER == type)
+                       dn = LdapAttrs.uid.name() + "=" + localId + "," + DirectoryConf.userBase.getValue(props) + "," + baseDn;
+               else
+                       throw new IllegalStateException("Unknown role type. " + "Cannot deduce dn for " + localId);
+               return dn;
+       }
+
+       @Override
+       public void changeOwnPassword(char[] oldPassword, char[] newPassword) {
+               String name = CurrentUser.getUsername();
+               LdapName dn;
+               try {
+                       dn = new LdapName(name);
+               } catch (InvalidNameException e) {
+                       throw new IllegalArgumentException("Invalid user dn " + name, e);
+               }
+               User user = (User) userAdmin.getRole(dn.toString());
+               if (!user.hasCredential(null, oldPassword))
+                       throw new IllegalArgumentException("Invalid password");
+               if (Arrays.equals(newPassword, new char[0]))
+                       throw new IllegalArgumentException("New password empty");
+               try {
+                       userTransaction.begin();
+                       user.getCredentials().put(null, newPassword);
+                       userTransaction.commit();
+               } catch (Exception e) {
+                       try {
+                               userTransaction.rollback();
+                       } catch (Exception e1) {
+                               log.error("Could not roll back", e1);
+                       }
+                       if (e instanceof RuntimeException)
+                               throw (RuntimeException) e;
+                       else
+                               throw new RuntimeException("Cannot change password", e);
+               }
+       }
+
+       public void resetPassword(String username, char[] newPassword) {
+               LdapName dn;
+               try {
+                       dn = new LdapName(username);
+               } catch (InvalidNameException e) {
+                       throw new IllegalArgumentException("Invalid user dn " + username, e);
+               }
+               User user = (User) userAdmin.getRole(dn.toString());
+               if (Arrays.equals(newPassword, new char[0]))
+                       throw new IllegalArgumentException("New password empty");
+               try {
+                       userTransaction.begin();
+                       user.getCredentials().put(null, newPassword);
+                       userTransaction.commit();
+               } catch (Exception e) {
+                       try {
+                               userTransaction.rollback();
+                       } catch (Exception e1) {
+                               log.error("Could not roll back", e1);
+                       }
+                       if (e instanceof RuntimeException)
+                               throw (RuntimeException) e;
+                       else
+                               throw new RuntimeException("Cannot change password", e);
+               }
+       }
+
+       public String addSharedSecret(String email, int hours) {
+               User user = (User) userAdmin.getUser(LdapAttrs.mail.name(), email);
+               try {
+                       userTransaction.begin();
+                       String uuid = UUID.randomUUID().toString();
+                       SharedSecret sharedSecret = new SharedSecret(hours, uuid);
+                       user.getCredentials().put(SharedSecret.X_SHARED_SECRET, sharedSecret.toAuthPassword());
+                       String tokenStr = sharedSecret.getAuthInfo() + '$' + sharedSecret.getAuthValue();
+                       userTransaction.commit();
+                       return tokenStr;
+               } catch (Exception e) {
+                       try {
+                               userTransaction.rollback();
+                       } catch (Exception e1) {
+                               log.error("Could not roll back", e1);
+                       }
+                       if (e instanceof RuntimeException)
+                               throw (RuntimeException) e;
+                       else
+                               throw new RuntimeException("Cannot change password", e);
+               }
+       }
+
+       @Deprecated
+       public String addSharedSecret(String username, String authInfo, String authToken) {
+               try {
+                       userTransaction.begin();
+                       User user = (User) userAdmin.getRole(username);
+                       SharedSecret sharedSecret = new SharedSecret(authInfo, authToken);
+                       user.getCredentials().put(SharedSecret.X_SHARED_SECRET, sharedSecret.toAuthPassword());
+                       String tokenStr = sharedSecret.getAuthInfo() + '$' + sharedSecret.getAuthValue();
+                       userTransaction.commit();
+                       return tokenStr;
+               } catch (Exception e1) {
+                       try {
+                               if (!userTransaction.isNoTransactionStatus())
+                                       userTransaction.rollback();
+                       } catch (Exception e2) {
+                               if (log.isTraceEnabled())
+                                       log.trace("Cannot rollback transaction", e2);
+                       }
+                       throw new RuntimeException("Cannot add shared secret", e1);
+               }
+       }
+
+       @Override
+       public void expireAuthToken(String token) {
+               try {
+                       userTransaction.begin();
+                       String dn = cn + "=" + token + "," + CmsConstants.TOKENS_BASEDN;
+                       Group tokenGroup = (Group) userAdmin.getRole(dn);
+                       String ldapDate = NamingUtils.instantToLdapDate(ZonedDateTime.now(ZoneOffset.UTC));
+                       tokenGroup.getProperties().put(description.name(), ldapDate);
+                       userTransaction.commit();
+                       if (log.isDebugEnabled())
+                               log.debug("Token " + token + " expired.");
+               } catch (Exception e1) {
+                       try {
+                               if (!userTransaction.isNoTransactionStatus())
+                                       userTransaction.rollback();
+                       } catch (Exception e2) {
+                               if (log.isTraceEnabled())
+                                       log.trace("Cannot rollback transaction", e2);
+                       }
+                       throw new RuntimeException("Cannot expire token", e1);
+               }
+       }
+
+       @Override
+       public void expireAuthTokens(Subject subject) {
+               Set<String> tokens = TokenUtils.tokensUsed(subject, CmsConstants.TOKENS_BASEDN);
+               for (String token : tokens)
+                       expireAuthToken(token);
+       }
+
+       @Override
+       public void addAuthToken(String userDn, String token, Integer hours, String... roles) {
+               addAuthToken(userDn, token, ZonedDateTime.now().plusHours(hours), roles);
+       }
+
+       @Override
+       public void addAuthToken(String userDn, String token, ZonedDateTime expiryDate, String... roles) {
+               try {
+                       userTransaction.begin();
+                       User user = (User) userAdmin.getRole(userDn);
+                       String tokenDn = cn + "=" + token + "," + CmsConstants.TOKENS_BASEDN;
+                       Group tokenGroup = (Group) userAdmin.createRole(tokenDn, Role.GROUP);
+                       if (roles != null)
+                               for (String role : roles) {
+                                       Role r = userAdmin.getRole(role);
+                                       if (r != null)
+                                               tokenGroup.addMember(r);
+                                       else {
+                                               if (!role.equals(CmsConstants.ROLE_USER)) {
+                                                       throw new IllegalStateException(
+                                                                       "Cannot add role " + role + " to token " + token + " for " + userDn);
+                                               }
+                                       }
+                               }
+                       tokenGroup.getProperties().put(owner.name(), user.getName());
+                       if (expiryDate != null) {
+                               String ldapDate = NamingUtils.instantToLdapDate(expiryDate);
+                               tokenGroup.getProperties().put(description.name(), ldapDate);
+                       }
+                       userTransaction.commit();
+               } catch (Exception e1) {
+                       try {
+                               if (!userTransaction.isNoTransactionStatus())
+                                       userTransaction.rollback();
+                       } catch (Exception e2) {
+                               if (log.isTraceEnabled())
+                                       log.trace("Cannot rollback transaction", e2);
+                       }
+                       throw new RuntimeException("Cannot add token", e1);
+               }
+       }
+
+       @Override
+       public UserDirectory getDirectory(Role user) {
+               String name = user.getName();
+               NavigableMap<String, UserDirectory> possible = new TreeMap<>();
+               for (UserDirectory userDirectory : userDirectories) {
+                       if (name.endsWith(userDirectory.getBase())) {
+                               possible.put(userDirectory.getBase(), userDirectory);
+                       }
+               }
+               if (possible.size() == 0)
+                       throw new IllegalStateException("No user directory found for user " + name);
+               return possible.lastEntry().getValue();
+       }
+
+//     public User createUserFromPerson(Node person) {
+//             String email = JcrUtils.get(person, LdapAttrs.mail.property());
+//             String dn = buildDefaultDN(email, Role.USER);
+//             User user;
+//             try {
+//                     userTransaction.begin();
+//                     user = (User) userAdmin.createRole(dn, Role.USER);
+//                     Dictionary<String, Object> userProperties = user.getProperties();
+//                     String name = JcrUtils.get(person, LdapAttrs.displayName.property());
+//                     userProperties.put(LdapAttrs.cn.name(), name);
+//                     userProperties.put(LdapAttrs.displayName.name(), name);
+//                     String givenName = JcrUtils.get(person, LdapAttrs.givenName.property());
+//                     String surname = JcrUtils.get(person, LdapAttrs.sn.property());
+//                     userProperties.put(LdapAttrs.givenName.name(), givenName);
+//                     userProperties.put(LdapAttrs.sn.name(), surname);
+//                     userProperties.put(LdapAttrs.mail.name(), email.toLowerCase());
+//                     userTransaction.commit();
+//             } catch (Exception e) {
+//                     try {
+//                             userTransaction.rollback();
+//                     } catch (Exception e1) {
+//                             log.error("Could not roll back", e1);
+//                     }
+//                     if (e instanceof RuntimeException)
+//                             throw (RuntimeException) e;
+//                     else
+//                             throw new RuntimeException("Cannot create user", e);
+//             }
+//             return user;
+//     }
+
+       public UserAdmin getUserAdmin() {
+               return userAdmin;
+       }
+
+//     public UserTransaction getUserTransaction() {
+//             return userTransaction;
+//     }
+
+       /* DEPENDENCY INJECTION */
+       public void setUserAdmin(UserAdmin userAdmin) {
+               this.userAdmin = userAdmin;
+
+               if (userAdmin instanceof AggregatingUserAdmin) {
+                       userDirectories = ((AggregatingUserAdmin) userAdmin).getUserDirectories();
+               } else {
+                       throw new IllegalArgumentException("Only " + AggregatingUserAdmin.class.getName() + " is supported.");
+               }
+
+//             this.serviceProperties = serviceProperties;
+       }
+
+       public void setUserTransaction(WorkTransaction userTransaction) {
+               this.userTransaction = userTransaction;
+       }
+
+//     public void addUserDirectory(UserDirectory userDirectory, Map<String, Object> properties) {
+//             userDirectories.put(userDirectory, new Hashtable<>(properties));
+//     }
+//
+//     public void removeUserDirectory(UserDirectory userDirectory, Map<String, Object> properties) {
+//             userDirectories.remove(userDirectory);
+//     }
+
+}