8 Application Session Service in Oracle Fusion Middleware

Example 8-8 Set Up the HR Demo Application for External Principals

Rem Copyright (c) 2009, 2014, Oracle and/or its affiliates.
Rem All rights reserved.

SET ECHO ON
SET FEEDBACK 1
SET NUMWIDTH 10
SET LINESIZE 80
SET TRIMSPOOL ON
SET TAB OFF
SET PAGESIZE 100
 
-- A PL/SQL function to determine manager-report relationship
conn hr/hr;
 
create or replace package hrutil as
 function ismyreport(id IN PLS_INTEGER)
 return PLS_INTEGER ;
end hrutil;
/
 
create or replace package body hrutil as
 function ismyreport(id IN PLS_INTEGER)
   return PLS_INTEGER is
   mycount PLS_INTEGER ;
   myid    PLS_INTEGER ;
 begin
   select employee_id into myid from hr.employees
   where UPPER(email) = XS_SYS_CONTEXT('PROFILE_NS','EMAIL');
 
   select count(employee_id) into mycount from hr.employees
   where employee_id = id start with manager_id = myid
   connect by prior employee_id = manager_id ;
   return mycount ;
 end ismyreport ;
end hrutil ;
/
 
-- Create a dynamic role for object privileges for external users.
connect sys/password as sysdba
show con_name;
 
-- Create a dynamic role for HR object privileges.
exec xs_principal.delete_principal('HROBJ',XS_ADMIN_UTIL.CASCADE_OPTION);
exec xs_principal.create_dynamic_role('HROBJ');
 
-- Create a db role to have HR object privileges.
drop role hr_db_obj;
create role hr_db_obj;
-- Grant object privilege to the db role.
grant select, insert, update, delete on hr.employees to hr_db_obj;
 
-- Grant db role to dynamic role.
grant hr_db_obj to HROBJ;
 
 
-- Create a security class with privilege view_sensitive_info, and
-- aggregate privilege update_info that implies data privileges,
-- update, delete, insert, which come from pre-defined security class
-- DML.
DECLARE
  priv_list  XS$PRIVILEGE_LIST;
BEGIN
  priv_list :=XS$PRIVILEGE_LIST(
     XS$PRIVILEGE(name=>'VIEW_SENSITIVE_INFO'),
     XS$PRIVILEGE(name=>'UPDATE_INFO',
                  implied_priv_list=>XS$NAME_LIST
                    ('"UPDATE"', '"DELETE"', '"INSERT"')));
 
  xs_security_class.create_security_class(
     name=>'HRPRIVS',
     parent_list=>XS$NAME_LIST('DML'),
     priv_list=>priv_list);
END;
/
 
-- External Principal (app role) Used for data security:
-- Such a principal must match the OPSS policy store.
-- roleName="HRREP" guid="37ED0D108C2F11E2BF802D569259982"
-- roleName="HRMGR" guid="4077A2B08C2F11E2BF802D569259982"
-- roleName="EMP"   guid="F917C3608CF011E2BF802D569259982"
 
-- Create an EMP Acl to grant EMP, HRMGR and HRREP privileges to access an employee record in the restricted departments.
DECLARE
  ace_list XS$ACE_LIST;
BEGIN
  ace_list := XS$ACE_LIST(
      XS$ACE_TYPE(privilege_list=>XS$NAME_LIST('"SELECT"','VIEW_SENSITIVE_INFO'),
                  granted=>true,
                  principal_name=>'"37ED0D108C2F11E2BF802D569259982"', principal_type=>XS_ACL.PTYPE_EXTERNAL),
      XS$ACE_TYPE(privilege_list=>XS$NAME_LIST('UPDATE_INFO'),
                  granted=>true,
                  principal_name=>'"4077A2B08C2F11E2BF802D569259982"', principal_type=>XS_ACL.PTYPE_EXTERNAL),
      XS$ACE_TYPE(privilege_list=>XS$NAME_LIST('"SELECT"'),
                  granted=>true,
                  principal_name=>'"F917C3608CF011E2BF802D569259982"', principal_type=>XS_ACL.PTYPE_EXTERNAL));
 
  xs_acl.create_acl(name=> 'EMP_ACL',
                   ace_list=> ace_list,
                   sec_class=>'HRPRIVS',
                   description=> 'Employee access to his/her data');
END;
/
 
-- Create a self Acl to grant EMP privileges to for an employee to see and update his own record.
-- Grant UPDATE, VIEW_SENSITIVE_INFO privileges to the EMP role.
DECLARE
 ace_list XS$ACE_LIST;
BEGIN
 ace_list := XS$ACE_LIST(
   XS$ACE_TYPE(privilege_list=> XS$NAME_LIST('"UPDATE"', 'VIEW_SENSITIVE_INFO'),
               principal_name=>'"F917C3608CF011E2BF802D569259982"', principal_type=>XS_ACL.PTYPE_EXTERNAL));
 
 xs_acl.create_acl(name=> 'SELF_ACL',
                   ace_list=> ace_list,
                   sec_class=>'HRPRIVS',
                   description=> 'Employee access to his/her data');
END;
/
 
--   Create Manager ACL, to allow a manager to see his employee's salary.
--   Grant VIEW_SENSITIVE_INFO privileges to EMP role on the Manager's employees.
--
DECLARE
 ace_list XS$ACE_LIST;
BEGIN
 ace_list := XS$ACE_LIST(
   XS$ACE_TYPE(privilege_list=> XS$NAME_LIST('VIEW_SENSITIVE_INFO'),
               principal_name=>'"F917C3608CF011E2BF802D569259982"', principal_type=>XS_ACL.PTYPE_EXTERNAL));
 
 xs_acl.create_acl(name=> 'MGR_ACL',
                   ace_list=> ace_list,
                   sec_class=>'HRPRIVS',
                   description=> 'Manager can see his reports salaray');
END;
/
 
-- Create data security policy for the EMPLOYEE table. The policy defines
-- an instant set to control the access to the employees in department
-- 60 and 100. It also defines an attribute constraint to control
-- the access to sensitive column SALARY.
DECLARE
  inst_sets XS$REALM_CONSTRAINT_LIST;
  attr_secs XS$COLUMN_CONSTRAINT_LIST;
BEGIN
  inst_sets :=
    XS$REALM_CONSTRAINT_LIST(
      XS$REALM_CONSTRAINT_TYPE(realm=> 'DEPARTMENT_ID in (60, 100)',
                           acl_list=> XS$NAME_LIST('EMP_ACL')));
 
  attr_secs :=
    XS$COLUMN_CONSTRAINT_LIST(
      XS$COLUMN_CONSTRAINT_TYPE(column_list=> XS$LIST('SALARY'),
                            privilege=> 'VIEW_SENSITIVE_INFO'));
 
  xs_data_security.create_policy(
          name=>'EMPLOYEES_DS',
          realm_constraint_list=>inst_sets,
          column_constraint_list=>attr_secs);
END;
/
 
-- Add more instance sets to the above data security.
declare
  inst1 xs$REALM_CONSTRAINT_TYPE;
  inst2 xs$REALM_CONSTRAINT_TYPE;
begin
 
  inst1 := xs$REALM_CONSTRAINT_TYPE(realm=> 'UPPER(email) = XS_SYS_CONTEXT(''PROFILE_NS'',''EMAIL'')',
                                acl_list=> XS$NAME_LIST('SELF_ACL'));
 
  xs_data_security.append_realm_constraints('EMPLOYEES_DS', inst1);
 
 
  inst2 := xs$REALM_CONSTRAINT_TYPE(realm=> 'hr.hrutil.ismyreport(employee_id) = 1',
                                acl_list=> XS$NAME_LIST('MGR_ACL'));
 
  xs_data_security.append_realm_constraints('EMPLOYEES_DS', inst2);
end;
/
 
-- Apply the data security policy on the table.
 
begin
  XS_DATA_SECURITY.apply_object_policy(schema=>'HR', object=>'EMPLOYEES',
                                       policy=>'EMPLOYEES_DS');
end;
/
 
-- Grant more privileges for the dispatcher.
exec XS_ADMIN_UTIL.GRANT_SYSTEM_PRIVILEGE('ADMIN_ANY_NAMESPACE','ts',XS_ADMIN_UTIL.PTYPE_XS);
grant select on  sys.dba_xs_session_roles to ts_role;
 
EXIT;

Example 8-9 A Complete Application Session Filter Sample Configuration

<?xml version = '1.0' encoding = 'UTF-8'?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5" xmlns="http://java.sun.com/xml/ns/javaee">
    <filter>
        <filter-name>JpsFilter</filter-name>
        <filter-class>oracle.security.jps.ee.http.JpsFilter</filter-class>
        <init-param>
            <param-name>enable.anonymous</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>remove.anonymous.role</param-name>
            <param-value>false</param-value>
        </init-param>
        <init-param>
            <param-name>application.name</param-name>
            <param-value>MyHRApp</param-value>
        </init-param>
        <!-- Following needed for Menu Security -->
        <!--init-param>
            <param-name>oracle.security.jps.jaas.mode</param-name>
            <param-value>subjectOnly</param-value>
        </init-param-->
    </filter>
    <filter>
        <filter-name>ApplicationSessionFilter</filter-name>
        <filter-class>oracle.security.xs.ee.session.ApplicationSessionFilter</filter-class>
 
        <init-param>
            <param-name>application.datasource</param-name>
            <param-value>jdbc/myDBDS</param-value>
        </init-param>
        <init-param>
            <param-name>dynamic.roles</param-name>
            <param-value>HROBJ</param-value>
        </init-param>
        <!--
         <init-param>
            <param-name>dispatcher.pool.max</param-name>
            <param-value>90</param-value>
        </init-param>
        -->
        <!-- init-param>
            <param-name>application.id</param-name>
            <param-value>MyHRApp</param-value>
        </init-param>
        <init-param>
            <param-name>session.provider</param-name>
            <param-value>XS</param-value>
        </init-param>
        <init-param>
            <param-name>db.url</param-name>
            <param-value>jdbc:oracle:thin:@adc2101065:1521:xs21</param-value>
        </init-param>
 
        <init-param>
            <param-name>dispatcher.id</param-name>
            <param-value>ts</param-value>
        </init-param>
 
        <init-param>
            <param-name>dispatcher.pwd.map</param-name>
            <param-value>XS_MAP</param-value>
        </init-param>
        <init-param>
            <param-name>dispatcher.pwd.key</param-name>
            <param-value>XS_KEY</param-value>
        </init-param>
        <init-param>
            <param-name>dispatcher.pool.min</param-name>
            <param-value>3</param-value>
        </init-param>
        <init-param>
            <param-name>dispatcher.pool.max</param-name>
            <param-value>10</param-value>
        </init-param -->
 
        <!--init-param>
            <param-name>namespaces</param-name>
            <param-value>sec_ns</param-value>
        </init-param-->
    </filter>
    <filter>
        <filter-name>MyFilter</filter-name>
        <filter-class>trusted.MyFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>JpsFilter</filter-name>
        <url-pattern>/*</url-pattern>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>INCLUDE</dispatcher>
    </filter-mapping>
    <filter-mapping>
        <filter-name>ApplicationSessionFilter</filter-name>
        <url-pattern>/myhr</url-pattern>
        <url-pattern>/mysession</url-pattern>
        <url-pattern>/myupdate</url-pattern>
        <url-pattern>/logout</url-pattern>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>INCLUDE</dispatcher>
    </filter-mapping>
    <filter-mapping>
        <filter-name>MyFilter</filter-name>
        <url-pattern>/myhr</url-pattern>
        <url-pattern>/mysession</url-pattern>
        <url-pattern>/myupdate</url-pattern>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>INCLUDE</dispatcher>
    </filter-mapping>
    <listener>
        <listener-class>oracle.security.xs.ee.session.ApplicationSessionListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>MySession</servlet-name>
        <servlet-class>app.MySession</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>LogoutServlet</servlet-name>
        <servlet-class>app.MyLogout</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>MyHR</servlet-name>
        <servlet-class>app.MyHR</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>MyUpdate</servlet-name>
        <servlet-class>app.MyUpdate</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>MySession</servlet-name>
        <url-pattern>/mysession</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>LogoutServlet</servlet-name>
        <url-pattern>/logout</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>MyHR</servlet-name>
        <url-pattern>/myhr</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>MyUpdate</servlet-name>
        <url-pattern>/myupdate</url-pattern>
    </servlet-mapping>
    <security-constraint>
        <web-resource-collection>
            <web-resource-name>my servlet</web-resource-name>
            <url-pattern>/myhr</url-pattern>
            <url-pattern>/mysession</url-pattern>
            <url-pattern>/myupdate</url-pattern>
        </web-resource-collection>
        <auth-constraint>
            <role-name>valid-users</role-name>
        </auth-constraint>
    </security-constraint>
    <login-config>
        <auth-method>CLIENT-CERT,FORM</auth-method>
        <form-login-config>
            <form-login-page>/login.jsp</form-login-page>
            <form-error-page>/error.jsp</form-error-page>
        </form-login-config>
    </login-config>
    <security-role>
        <role-name>valid-users</role-name>
    </security-role>
</web-app>

Example 8-10 Sample Servlet Application MyHR.java

/* Copyright (c) 2009, 2014, Oracle and/or its affiliates.
All rights reserved.*/
 
package app;
 
import java.io.IOException;
import java.io.PrintWriter;
 
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
 
import java.util.ArrayList;
import java.util.Collection;
 
import javax.naming.InitialContext;
import javax.naming.NamingException;
 
import javax.servlet.ServletConfig;
import javax.servlet.http.HttpServlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import javax.sql.DataSource;
 
import oracle.jdbc.OracleResultSet;
import oracle.jdbc.OracleResultSet.AuthorizationIndicator;
import oracle.security.xs.ee.session.ApplicationSessionException;
import oracle.security.xs.ee.session.ApplicationSessionService;
 
public class MyHR extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=UTF-8";
 
    String query = " select emp.EMPLOYEE_ID, emp.first_name, emp.last_name, " +
                   "        emp.email, emp.phone_number, salary, emp.manager_id, " +
                   "        emp.department_id,ora_get_aclids(emp) as acl_id" +
                   " from hr.employees emp";
 
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
    }
 
    public void queryHR(PrintWriter out) throws ApplicationSessionException {
 
        DataSource dataSource = null;
        Connection conn = null;
 
        try {
            InitialContext ic;
            try {
                ic = new InitialContext();
 
                dataSource = (DataSource)ic.lookup("jdbc/myDBDS");
 
                if (dataSource != null)
                    try {
                        conn = dataSource.getConnection();
                    } catch (SQLException e) {
                        e.printStackTrace();
                    }
            } catch (NamingException e) {
                e.printStackTrace();
            }
 
            try {
                queryHR(conn, out);
            } catch (Exception e) {
                e.printStackTrace();
            }
 
        } finally {
 
            if (conn != null)
                try {
                    conn.close();
                } catch (SQLException e) {
                }
        }
 
    }
 
    public void doGet(HttpServletRequest request,
                      HttpServletResponse response) throws ServletException,
                                                           IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter pw = response.getWriter();
 
        pw.println(HEADER);
 
        pw.println("<h1><font size=\"+2\">RAS Session Service Demo</font></h1>");
        pw.println("<font size=\"+1\">");
        pw.println("You are logged in as <b>" + request.getRemoteUser() + "</b>");
 
        try {
            queryHR(pw);
        } catch (ApplicationSessionException e) {
            e.printStackTrace();
        }
 
        pw.println(FOOTER);
        pw.close();
    }
 
 
    public Collection<Employee> queryHR(Connection conn ) {
 
      Statement stmt = null;
      ResultSet rs = null;
 
      Collection<Employee> result = new ArrayList<Employee>();
 
      try {
        // attach session
        ApplicationSessionService.attachSession(conn);
 
        stmt = conn.createStatement();
        rs = stmt.executeQuery(query);
 
        while (rs.next()) {
          Employee emp = new Employee();
 
          emp.setId(rs.getString("EMPLOYEE_ID"));
 
          AuthorizationIndicator ai =
                    ((OracleResultSet)rs).getAuthorizationIndicator("salary");
 
          if (ai == AuthorizationIndicator.NONE) {
            emp.setSalary(rs.getString("salary"));
          } else {
            emp.setSalary("******")  ;
          }
 
          // get ACL associated with the row
          emp.setAcl(rs.getBytes("acl_id"));
          // check "update" privilege
          boolean canUpdate = ApplicationSessionService.checkPrivilege(conn, emp.getAcl(), "UPDATE");
 
          emp.setUpdate(canUpdate);
          result.add(emp);
 
          emp.setFname(rs.getString("first_name"));
          emp.setLname(rs.getString("last_name"));
          emp.setEmail(rs.getString("email"));
          emp.setPhone(rs.getString("phone_number"));
          emp.setManagerId(rs.getString("manager_id"));
          emp.setDepId(rs.getString("department_id"));
 
        }
      } catch (ApplicationSessionException e) {
          e.printStackTrace();
          // process me
      } catch (SQLException e) {
          // process me
          e.printStackTrace();
      } finally {
         if (stmt != null) try {stmt.close();} catch (SQLException e) {};
         if (rs != null) try { rs.close();} catch (SQLException e)  {};
         try {ApplicationSessionService.detachSession(conn);} catch (ApplicationSessionException e) {};
 
      }
 
      return result;
    }
 
    public void queryHR(Connection conn, PrintWriter out ) {
 
        Collection<Employee> list = queryHR(conn);
 
        PrintWriter pw = out;
 
        pw.println("<br>Displaying employee record(s) that you can access.<br>");
        pw.println("</font>");
        pw.println("<i>NOTE: Salary is only shown if you are authorized to view,
 and ID is shown as a link if you are authorized to perform an update.</i><br>");
 
        out.println("<table border=\"1\">");
 
        String tmp;
 
        if (list.size() > 0) {
            out.println("<tr>");
            out.println("<th>ID</th>");
            out.println("<th>First Name</th>");
            out.println("<th>Last Name</th>");
            out.println("<th>Email</th>");
            out.println("<th>Phone</th>");
            out.println("<th>Salary</th>");
 
            out.println("<th>Department ID</th>");
            out.println("<th>Manager ID</th>");
            out.println("</tr>");
        }
 
        for (Employee e: list)  {
 
            if (e.canUpdate()) {
                tmp = "<a href=\"update.jsp?id=" + e.getId() + "\">" + e.getId() + "</a>";
            } else {
                tmp = e.getId();
            }
 
            out.println("<tr><td>" + tmp + "</td>");
            out.println("<td>" +  e.getFname() + "</td>");
            out.println("<td>" +  e.getLname() + "</td>");
            out.println("<td>" +  e.getEmail() + "</td>");
            out.println("<td>" +  e.getPhone() + "</td>");
            out.println("<td>" +  e.getSalary() + "</td>");
            out.println("<td>" +  e.getDepId() + "</td>");
            out.println("<td>" +  e.getManagerId() + "</td></tr>");
 
        }
 
        out.println("</TABLE>");
 
    };
 
    class Employee {
 
        String id;
        String salary;
        boolean update;
        String fname;
        String lname;
        String email;
        String phone;
        String managerId;
        String depId;
        byte[] acl;
 
        public void setId(String id) {
            this.id = id;
        }
 
        public String getId() {
            return id;
        }
 
        public void setSalary(String salary) {
            this.salary = salary;
        }
 
        public String getSalary() {
            return salary;
        }
 
        public void setUpdate(boolean canUpdate) {
            this.update = canUpdate;
        }
 
        public boolean canUpdate() {
            return update;
        }
 
        public void setFname(String fname) {
            this.fname = fname;
        }
 
        public String getFname() {
            return fname;
        }
 
        public void setLname(String lname) {
            this.lname = lname;
        }
 
        public String getLname() {
            return lname;
        }
 
        public void setEmail(String email) {
            this.email = email;
        }
 
        public String getEmail() {
            return email;
        }
 
        public void setPhone(String phone) {
            this.phone = phone;
        }
 
        public String getPhone() {
            return phone;
        }
 
        public void setManagerId(String managerId) {
            this.managerId = managerId;
        }
 
        public String getManagerId() {
            return managerId;
        }
 
        public void setDepId(String depId) {
            this.depId = depId;
        }
 
        public String getDepId() {
            return depId;
        }
 
        public void setAcl(byte[] acl) {
            this.acl = acl;
        }
 
        public byte[] getAcl() {
            return acl;
        }
    }
 
    private static String HEADER = "<html xmlns=\"http://www.w3.org/1999/xhtml\"><head>"
            + "<meta content=\"text/html; charset=UTF-8\" http-equiv=\"content-type\"/>"
            + "<title>Oracle</title>"
            + "<link href=\"css/general.css\" type=\"text/css\" rel=\"stylesheet\"/>"
            + "<link href=\"css/window.css\" type=\"text/css\" rel=\"stylesheet\"/>"
            + "<link href=\"css/login.css\" type=\"text/css\" rel=\"stylesheet\"/>"
            + "<script type=\"text/javascript\">"
            + "  if (top != self) top.location.href = location.href;"
            + "</script>"
            + "<style type=\"text/css\">"
            + "html { background-color: #001C34;}"
            + "</style>"
            + "</head>"
            + "<body onload=\"document.loginData.j_username.focus();\">"
            + "  <div id=\"top\">"
            + "   <div id=\"login-header\">"
            + "    <div id=\"login-logo\">"
            + "    <img  src=\"images/logo.png\"/>"
            + "</div>"
            + "  </div>"
            + "  <div id=\"content\">"
            + "<div id=\"app_data\"><div id=\"title\"></div>";
 
        private static String FOOTER = "<a href=\"/myapp/logout\">Logout</a>"
                + "</div></div><div id=\"info\"></div></div></body></html>";
}

Example 8-11 Filter to Set Up Application Namespace

/* Copyright (c) 2009, 2014, Oracle and/or its affiliates.
All rights reserved.*/

package trusted;
 
 
import java.io.IOException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.naming.InitialContext;
import javax.naming.NamingException;
 
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.sql.DataSource;
import oracle.security.xs.ee.session.ApplicationSessionException;
import oracle.security.xs.ee.session.ApplicationSessionService;
import oracle.security.xs.ee.session.NamespaceNotFoundException;
 
 
/**
 * Demonstrate how trusted application code (a filter) can set up
 * security critical namespace using session privilege elevation and
 * namespace APIs.
 *
 * The filter should be deployed as a separate jar, and SessionCodePermission
 * should be granted to the jar.
 */
 
public class MyFilter implements Filter {
    private FilterConfig _filterConfig = null;
    DataSource myDatasource = null;
 
    public void init(FilterConfig filterConfig) throws ServletException {
        _filterConfig = filterConfig;
 
    }
 
    public void destroy() {
        _filterConfig = null;
    }
 
 
    public void querySessionRoles(Connection conn) throws SQLException {
 
        String query =
            "select role_name from v$xs_session_roles order by role_name";
        String roles = null;
 
        try {
 
            Statement stmt = conn.createStatement();
            ResultSet rs = stmt.executeQuery(query);
 
            System.out.println("<p> roles in RAS session (from myfilter):</p>");
 
            System.out.println("<TABLE>");
 
            while (rs.next()) {
 
                roles = rs.getString(1);
                System.out.println("<tr><td>" + roles + "</td></tr>");
            }
            System.out.println("</TABLE>");
        } finally {
 
        }
 
        return;
    }
 
 
    private boolean namespaceExists(String ns, String attribute, String value) throws ApplicationSessionException {
 
 
        try {
            return value.equalsIgnoreCase(ApplicationSessionService.getNamespaceAttribute(ns, attribute));
        } catch (NamespaceNotFoundException e) {
            return false;
        }
    }
 
    private Connection getConnection() {
 
        DataSource dataSource = null;
        InitialContext ic;
        try {
            ic = new InitialContext(); //TODO cache context
 
            dataSource = (DataSource)ic.lookup("jdbc/myDBDS");
 
            if (dataSource != null)
                try {
                    return dataSource.getConnection();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
        } catch (NamingException e) {
            e.printStackTrace();
        }
        return null;
    }
 
 
    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain chain) {
 
        Connection conn = null;
 
        try {
 
            String email = ((HttpServletRequest)request).getRemoteUser();
            if ( email != null && !namespaceExists("PROFILE_NS", "EMAIL", email )) {
 
 
 
                conn = getConnection();
 
                //AccessController.doPrivileged(new AttachAction(conn), null);
                ApplicationSessionService.attachSessionPrivileged(conn, "SESSION_NS_DROLE");
 
 
 
                ApplicationSessionService.createNamespace(conn, "PROFILE_NS");
                ApplicationSessionService.setNamespaceAttribute(conn, "PROFILE_NS", "EMAIL", email);
 
                ApplicationSessionService.detachSession(conn);
            }
 
        } catch (ApplicationSessionException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
 
            if (conn != null)
                try {
                    conn.close();
                } catch (SQLException e) {
                }
            }
 
        try {
            chain.doFilter(request, response);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ServletException e) {
            e.printStackTrace();
        }
    }
}

Example 8-12 User and Group to Application Roles Mapping

<app-role>   
<name>EMP</name>
<display-name>Employee for dept #60 and dept #100</display-name>
<description>HR manager for dept #60 and representative for dept #100</description>
<guid>F917C3608CF011E2BF802D569259982</guid>
<class>oracle.security.jps.service.policystore.ApplicationRole</class>
<members>
    <member>
        <class>weblogic.security.principal.WLSUserImpl</class>
        <name>LPOPP</name>
    </member>
</members>
</app-role>