/**
  * Add attribute to ldap entry.
  *
  * @param request HTTP request.
  * @param response HTTP response.
  * @param context request context
  * @throws IdentityException if a system error occurs preventing the action
  * @throws IOException if error writing to the buffer
  * @throws NamingException if an LDAP naming exception occurs
  * @throws SQLException
  * @throws CredentialPolicyException
  */
 private void executeModifyUserAttribute(
     HttpServletRequest request,
     HttpServletResponse response,
     RequestContext context,
     boolean isAddAttributeRequest)
     throws IdentityException, IOException, NamingException, SQLException,
         CredentialPolicyException {
   String mimeType = "application/json";
   String filter = Val.chkStr(request.getParameter("q"));
   String attributeName = Val.chkStr(request.getParameter("an"));
   String attributeValue = Val.chkStr(request.getParameter("av"));
   if (filter.length() == 0) {
     response.getWriter().write("{ \"response\" : \"noResults\" }");
     return;
   }
   IdentityAdapter idAdapter = context.newIdentityAdapter();
   Users users = idAdapter.readUsers(filter, null);
   for (User u : users.values()) {
     if (isAddAttributeRequest) {
       try {
         idAdapter.addAttribute(u.getDistinguishedName(), attributeName, attributeValue);
       } catch (AttributeInUseException aiue) {
         // TODO : do nothing if attribute exists ? or overwrite ?
       }
     } else {
       idAdapter.removeAttribute(u.getDistinguishedName(), attributeName, attributeValue);
     }
   }
   writeCharacterResponse(
       response,
       "{ \"response\" : \"User attribute modification was successful.\" }",
       "UTF-8",
       mimeType + ";charset=UTF-8");
 }
 /**
  * Checks if managed user is active user.
  *
  * @param context
  * @param managedUserDn
  * @return true if managed user is same as active user
  */
 protected boolean checkSelf(RequestContext context, String managedUserDn) {
   boolean isSelf = false;
   User user = context.getUser();
   if (user.getDistinguishedName().equals(managedUserDn)) {
     isSelf = true;
   }
   return isSelf;
 }
  /**
   * Constructs a administrator based upon the user associated with the current request context.
   *
   * @param context the current request context (contains the active user)
   * @throws NotAuthorizedException if the user does not have publishing rights
   */
  protected void checkRole(RequestContext context) throws NotAuthorizedException {

    // initialize
    User user = context.getUser();
    user.setKey(user.getKey());
    user.setLocalID(user.getLocalID());
    user.setDistinguishedName(user.getDistinguishedName());
    user.setName(user.getName());

    // establish credentials
    UsernamePasswordCredentials creds = new UsernamePasswordCredentials();
    creds.setUsername(user.getName());
    user.setCredentials(creds);

    user.setAuthenticationStatus(user.getAuthenticationStatus());
    assertAdministratorRole(user);
  }
  /**
   * Serializes user information from ldap to json string.
   *
   * @param context request context
   * @param user the user to be serialized
   * @return the user profile information serialized as json string.
   * @throws IdentityException if a system error occurs preventing the action
   * @throws NamingException if an LDAP naming exception occurs
   */
  protected String serializeUserAsJson(RequestContext context, User user)
      throws IdentityException, NamingException {
    String usersJson = "{ \"attributes\": [";
    UserAttributeMap attributes = user.getProfile();
    boolean first = true;
    List<String> sortedKeys = new ArrayList<String>(attributes.keySet());
    // Collections.sort(sortedKeys); TODO to sort or not ?
    for (int i = 0; i < sortedKeys.size(); i++) {
      UserAttribute attr = attributes.get(sortedKeys.get(i));
      String key =
          Val.chkStr(msgBroker.retrieveMessage("catalog.identity.profile.label." + attr.getKey()));
      String value = "";
      value = Val.chkStr(attr.getValue());
      if (attr.getKey().equalsIgnoreCase("password")) continue;
      if (!first) {
        usersJson += ",";
      } else {
        first = false;
      }
      usersJson +=
          " { \"key\" : \""
              + Val.escapeStrForJson(key)
              + "\" , \"value\" : \""
              + Val.escapeStrForJson(value)
              + "\" }";
    }
    usersJson += " ] , ";

    usersJson += " \"userDn\" : \"" + user.getDistinguishedName() + " \" , ";

    String groupsJson = " \"groups\" : [";
    Groups groups = user.getGroups();
    groups.sort();
    boolean firstGroup = true;
    for (Group group : groups.values()) {
      String gkey = Val.chkStr(group.getKey());
      String name = Val.chkStr(group.getName());
      String dn = Val.chkStr(group.getDistinguishedName());
      if (!firstGroup) {
        groupsJson += ",";
      } else {
        firstGroup = false;
      }
      groupsJson +=
          " { \"key\" : \""
              + Val.escapeStrForJson(gkey)
              + "\" , \"name\" : \""
              + Val.escapeStrForJson(name)
              + "\" , \"dn\" : \""
              + Val.escapeStrForJson(dn)
              + "\" }";
    }
    groupsJson += " ] , ";

    String rolesJson = " \"selectableRoles\" : [";
    Roles roles = buildSelectableRoles(context);
    sortedKeys = new ArrayList<String>(roles.keySet());
    Collections.sort(sortedKeys);
    boolean firstRole = true;
    for (int i = 0; i < sortedKeys.size(); i++) {
      Role role = roles.get(sortedKeys.get(i));
      String roleDn = Val.chkStr(role.getDistinguishedName());
      String roleKey = Val.chkStr(role.getKey());
      String roleName = msgBroker.retrieveMessage(Val.chkStr(role.getResKey()));
      if (!role.isManage()) continue;
      boolean hasRole = false;
      for (Group group : groups.values()) {
        String groupDn = Val.chkStr(group.getDistinguishedName());
        if (roleDn.equals(groupDn)) {
          hasRole = true;
          break;
        }
      }
      if (!firstRole) {
        rolesJson += ",";
      } else {
        firstRole = false;
      }
      rolesJson +=
          " { \"roleName\" : \""
              + Val.escapeStrForJson(roleName)
              + "\" , \"roleDn\" : \""
              + Val.escapeStrForJson(roleDn)
              + "\" , \"roleKey\" : \""
              + Val.escapeStrForJson(roleKey)
              + "\" , \"hasRole\" : \""
              + hasRole
              + "\" }";
    }
    rolesJson += " ] } ";
    String json = usersJson + groupsJson + rolesJson;
    return json;
  }