private boolean isUserAuthorizedForNonRolePage(
      PageDef pageDef, HttpServletRequest request, LoginBean loginBean, UserGroup ipUserGroup) {
    VDCUser user = null;
    if (loginBean != null) {
      user = loginBean.getUser();
    }

    if (user != null
        && user.getNetworkRole() != null
        && user.getNetworkRole().getName().equals(NetworkRoleServiceLocal.ADMIN)) {
      // If you are network admin, you can do anything!
      return true;
    }

    VDC currentVDC = vdcService.getVDCFromRequest(request);
    if (currentVDC != null && !isTermsOfUsePage(pageDef) && isVdcRestricted(pageDef, request)) {
      if (currentVDC.isVDCRestrictedForUser(user, ipUserGroup)) {
        return false;
      }
    } else if (pageDef != null
        && (pageDef.getName().equals(PageDefServiceLocal.DV_OPTIONS_PAGE)
            || pageDef.getName().equals(PageDefServiceLocal.ACCOUNT_OPTIONS_PAGE)
            || pageDef.getName().equals(PageDefServiceLocal.ACCOUNT_PAGE)
            || pageDef.getName().equals(PageDefServiceLocal.MANAGE_STUDIES_PAGE))) {
      // For these  pages, the only requirement is
      // to be logged in.
      if (user == null) {
        return false;
      }
      String userParam = request.getParameter("userId");
      if (userParam != null && !userParam.equals(user.getId().toString())) {
        // To view other users, logged in user must be an admin or curator
        if (!(user.isAdmin(currentVDC) || user.isCurator(currentVDC))) {
          return false;
        }
      }
    } else if (isViewStudyPage(pageDef)) {
      Study study = null;
      StudyVersion studyVersion = null;
      String studyId = VDCBaseBean.getParamFromRequestOrComponent("studyId", request);
      String versionNumber = VDCBaseBean.getParamFromRequestOrComponent("versionNumber", request);
      if (studyId != null) {
        study = studyService.getStudy(Long.parseLong(studyId));
        if (versionNumber != null) {
          studyVersion =
              studyService.getStudyVersion(Long.parseLong(studyId), new Long(versionNumber));
        }
      } else {
        study =
            studyService.getStudyByGlobalId(
                VDCBaseBean.getParamFromRequestOrComponent("globalId", request));
      }
      if (study.isStudyRestrictedForUser(user, ipUserGroup)) {
        return false;
      }
      if (studyVersion != null) {
        // If study has been deaccessioned,
        // only show the page if the user is authorized to edit
        if (study.isDeaccessioned() && (user == null || !study.isUserAuthorizedToEdit(user))) {
          return false;
        }
        // If this is a draft version, only show the version if the user is authorized to edit
        if (studyVersion.isWorkingCopy() && (user == null || !study.isUserAuthorizedToEdit(user))) {
          return false;
        }
      }

    } else if (isVersionDiffPage(pageDef)) {
      Study study = null;
      StudyVersion studyVersion1 = null;
      StudyVersion studyVersion2 = null;
      String studyId = VDCBaseBean.getParamFromRequestOrComponent("studyId", request);

      Long[] versionList = VDCRequestBean.parseVersionNumberList(request);

      studyVersion1 = studyService.getStudyVersion(Long.parseLong(studyId), versionList[0]);
      studyVersion2 = studyService.getStudyVersion(Long.parseLong(studyId), versionList[1]);

      if (studyId != null) {
        study = studyService.getStudy(Long.parseLong(studyId));

      } else {
        study =
            studyService.getStudyByGlobalId(
                VDCBaseBean.getParamFromRequestOrComponent("globalId", request));
      }
      if (study.isStudyRestrictedForUser(user, ipUserGroup)) {
        return false;
      }

      // If study has been deaccessioned,
      // only show the page if the user is authorized to edit
      if (study.isDeaccessioned() && (user == null || !study.isUserAuthorizedToEdit(user))) {
        return false;
      }
      // If this is a draft version, only show the version if the user is authorized to edit
      if ((studyVersion1.isWorkingCopy() || studyVersion2.isWorkingCopy())
          && (user == null || !study.isUserAuthorizedToEdit(user))) {
        return false;
      }
      if ("confirmRelease".equals(request.getParameter("actionMode"))
          && !study.isUserAuthorizedToRelease(user)) {
        return false;
      }

    } else if (isSubsettingPage(pageDef)) {
      String dtId = VDCBaseBean.getParamFromRequestOrComponent("dtId", request);

      DataTable dataTable = variableService.getDataTable(Long.parseLong(dtId));
      Study study = dataTable.getStudyFile().getStudy();
      if (study.isStudyRestrictedForUser(user, ipUserGroup)) {
        return false;
      }
    } else if (isExploreDataPage(pageDef)) {
      String fileId = VDCBaseBean.getParamFromRequestOrComponent("fileId", request);
      StudyFile sf = studyFileService.getStudyFile(Long.parseLong(fileId));
      if (sf.isFileRestrictedForUser(user, currentVDC, ipUserGroup)) {
        return false;
      }
    } else if (isEditAccountPage(pageDef)) {
      String userId = VDCBaseBean.getParamFromRequestOrComponent("userId", request);
      if (user == null || user.getId() != Long.parseLong(userId)) {
        return false;
      }
    } else if (isManifestPage(pageDef)) {

      LockssConfig chkLockssConfig = getLockssConfig(currentVDC);
      if (chkLockssConfig == null) {
        return false;
      } else if (chkLockssConfig.getserverAccess().equals(ServerAccess.GROUP)) {
        VDCRole userRole = null;
        String userVDCRoleName = null;
        if (user != null && currentVDC != null) {
          userRole = loginBean.getVDCRole(currentVDC);
        }
        if (user != null && userRole != null && user.isAdmin(currentVDC)) {
          return true;
        }

        if (user != null
            && user.getNetworkRole() != null
            && user.getNetworkRole().getName().equals(NetworkRoleServiceLocal.ADMIN)) {
          // If you are network admin, you can do anything!
          return true;
        }

        if (!lockssAuth.isAuthorizedLockssServer(currentVDC, request)) {
          return false;
        }
      }
    }
    return true;
  }
  /**
   * @param request The servlet request we are processing
   * @param result The servlet response we are creating
   * @param chain The filter chain we are processing
   * @exception IOException if an input/output error occurs
   * @exception ServletException if a servlet error occurs
   */
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {

    HttpServletRequest httpRequest = (HttpServletRequest) request;
    HttpServletResponse httpResponse = (HttpServletResponse) response;
    String requestPath = httpRequest.getPathInfo();
    VDC currentVDC = vdcService.getVDCFromRequest(httpRequest);

    if (requestPath != null && requestPath.endsWith(".jsp")) {
      String redirectURL = httpRequest.getContextPath();
      if (currentVDC != null) {
        redirectURL += "/dv/" + currentVDC.getAlias();
      }
      httpResponse.sendRedirect(redirectURL + "/faces/NotFoundPage.xhtml");
      return;
    }
    PageDef pageDef = pageDefService.findByPath(requestPath);

    // check for invalid study Id or study versionNumber
    // for right now, do this with a sendRedirect, though we should try to figure out a solution
    // with a forward isntead; that way the user can fix the issue in the URL and easily try again
    if (isViewStudyPage(pageDef) || isEditStudyPage(pageDef) || isVersionDiffPage(pageDef)) {
      Long studyId = determineStudyId(pageDef, httpRequest);

      if (isVersionDiffPage(pageDef)) {
        Long[] versionDiffNumbers = VDCRequestBean.parseVersionNumberList(httpRequest);
        if (versionDiffNumbers == null || studyId == null) {
          String redirectURL = httpRequest.getContextPath();
          if (currentVDC != null) {
            redirectURL += "/dv/" + currentVDC.getAlias();
          }
          httpResponse.sendRedirect(redirectURL + "/faces/NotFoundPage.xhtml");
          return;
        } else {
          try {
            // Get the studyVersions to test that the versionNumbers exist for this study.
            // If they don't exist, an EJBException will be thrown.
            StudyVersion sv1 = studyService.getStudyVersion(studyId, versionDiffNumbers[0]);
            StudyVersion sv2 = studyService.getStudyVersion(studyId, versionDiffNumbers[1]);
          } catch (EJBException e) {
            if (e.getCause() instanceof IllegalArgumentException) {
              String redirectURL = httpRequest.getContextPath();
              if (currentVDC != null) {
                redirectURL += "/dv/" + currentVDC.getAlias();
              }
              httpResponse.sendRedirect(redirectURL + "/faces/IdDoesNotExistPage.xhtml");
              return;
            } else {
              throw e;
            }
          }
        }
      } else if (studyId != null) {
        try {
          String versionNumberParam = httpRequest.getParameter("versionNumber");

          if (versionNumberParam != null) {
            Long versionNumber = new Long(versionNumberParam);
            StudyVersion sv = studyService.getStudyVersion(studyId, versionNumber);

          } else {
            // Get the study to make sure that the studyId exists.
            // If it doesn't exist, and EJBException will be thrown.
            Study study = studyService.getStudy(studyId);
          }
        } catch (EJBException e) {
          if (e.getCause() instanceof IllegalArgumentException) {
            String redirectURL = httpRequest.getContextPath();
            if (currentVDC != null) {
              redirectURL += "/dv/" + currentVDC.getAlias();
            }
            httpResponse.sendRedirect(redirectURL + "/faces/IdDoesNotExistPage.xhtml");
            return;
          } else {
            throw e;
          }
        } catch (NumberFormatException e) {
          String redirectURL = httpRequest.getContextPath();
          if (currentVDC != null) {
            redirectURL += "/dv/" + currentVDC.getAlias();
          }
          httpResponse.sendRedirect(redirectURL + "/faces/NotFoundPage.xhtml");
          return;
        }
      }
    }

    setOriginalUrl(httpRequest, httpResponse, currentVDC);

    LoginBean loginBean = getLoginBean(request);
    UserGroup ipUserGroup = null;
    if (loginBean == null) {
      ipUserGroup = getIpGroup(httpRequest);
    } else {
      HttpSession session = ((HttpServletRequest) request).getSession(false);
    }

    String loginURI = (String) httpRequest.getSession().getAttribute("LOGIN_REDIRECT");
    if (loginURI != null) {
      httpRequest.getSession().removeAttribute("LOGIN_REDIRECT");
      httpResponse.sendRedirect(loginURI);
    } else {
      boolean authorized = false;
      if (isRolePage(pageDef, httpRequest)) {
        if (isUserAuthorizedForRolePage(pageDef, httpRequest, loginBean)) {
          authorized = true;
        }

      } else if (isUserAuthorizedForNonRolePage(pageDef, httpRequest, loginBean, ipUserGroup)) {
        authorized = true;
      }

      if (!authorized) {
        if (loginBean == null) {
          redirectToLogin(httpRequest, httpResponse, currentVDC);
        } else {
          PageDef redirectPageDef =
              pageDefService.findByName(PageDefServiceLocal.UNAUTHORIZED_PAGE);
          httpResponse.sendRedirect(
              httpRequest.getContextPath() + "/faces" + redirectPageDef.getPath());
        }
      } else {
        if (isCheckLockPage(pageDef) && studyLockedMessage(pageDef, httpRequest) != null) {

          PageDef redirectPageDef = pageDefService.findByName(PageDefServiceLocal.STUDYLOCKED_PAGE);
          httpResponse.sendRedirect(
              httpRequest.getContextPath()
                  + "/faces"
                  + redirectPageDef.getPath()
                  + "?message="
                  + studyLockedMessage(pageDef, httpRequest));
        } else {

          try {
            chain.doFilter(request, response);
          } catch (Throwable t) {
            //
            // If an exception is thrown somewhere down the filter chain,
            // we still want to execute our after processing, and then
            // rethrow the problem after that.
            //

            t.printStackTrace();
          }
        }
      }
    }
  }