The Security Sample Application


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This topic includes the following sections:

Refer to Readme.txt in the \security directory for troubleshooting information and the latest information about using the Security sample application. For a full discussion of implementing security in a CORBA application, see Using Security in CORBA Applications.

How the Security Sample Application Works

The Security sample application enhances the Basic sample application by adding application-level security to the CORBA application. Application-level security requires each student to have an ID and a password. Therefore, the concept of a Student is added to the Security sample application.

The following functionality is added to the Basic sample application:

The client applications add a logon operation. This operation uses a SecurityCurrent environmental object to invoke operations on the PrincipalAuthenticator object, which is part of the process of logging on to access the domain.
The University server application implements an additional operation, get_student_details(), on the Registrar object to return information about a student. After a proper CORBA logon is complete, the get_student_details() operation accesses the student information in the database to obtain the student information needed by the client logon operation.
The University database contains student information in addition to course information.

Figure 4-1 illustrates how the Security sample application works.

Figure 4-1 The Security Sample Application

The Development Process for the Security Sample Application

This section describes the development process required when adding security to CORBA client and server applications. These steps are in addition to the development steps outlined in The Basic Sample Application section.

Note: The steps in this section have been done for you and are included in the Security sample application.

OMG IDL

During the development process, you would define the StudentDetails struct and the get_student_details()operation in Object Management Group (OMG) Interface Definition Language (IDL).

The Client Application

During the development process, you would add the following code to your client application:

The Bootstrap environmental object to obtain a reference to the SecurityCurrent environmental object in the specified BEA Tuxedo domain.
The Tobj::PrincipalAuthenticator operation of the SecurityCurrent environmental object to return the type of authentication expected by the BEA Tuxedo domain.
Operations to log on to the BEA Tuxedo domain using the required security information.

For the Security sample application, this code has already been added for you. For information about adding security to CORBA client applications, see Using Security in CORBA Applications.

The Server Application

During the development process, you would write the method implementation for the get_student_details()operation. For information about writing method implementations, see Creating CORBA Server Applications.

The UBBCONFIG File

In the BEA Tuxedo software, security levels are defined for the configuration by the system administrator. The system administrator defines the security for the BEA Tuxedo domain by setting the SECURITY parameter RESOURSES section of the UBBCONFIG file to the desired security level. In the Security sample application, the SECURITY parameter is set to APP_PW for application-level security. For information about adding security to a BEA Tuxedo domain, see Setting Up a BEA Tuxedo Application and Using Security in CORBA Applications.

The ICF File

No changes to the Implementation Configuration File (ICF) are required.

Building the Security Sample Application

To build the Security sample application, complete the following steps:

Copy the files for the Security sample application.
Change the protection on the files for the Security sample application.
Set the environment variables.
Initialize the University database.
Load the UBBCONFIG file.
Build the client and server sample applications.

The following sections describe these steps.

Note: Before you can build or run the Security sample application, you need to perform the steps in Setting Up Your Environment.

Copying the Files for the Security Sample Application into a Work Directory

The files for the Security sample application are located in the following directories:

Windows 2000

drive:\TUXDIR\samples\corba\university\security

UNIX

/usr/TUXDIR/samples/corba/university/security

In addition, you need to copy the utils directory into your work directory. The utils directory contains files that set up logging, tracing, and access to the University database.

File	Description
univs.idl	The OMG IDL that declares the CourseSynopsisEnumerator, Registrar, and RegistrarFactory interfaces.
univss.cpp	The C++ source code for the University server application in the Security sample application.
univs_i.h univs_i.cpp	The C++ source code for method implementations of the CourseSynopsisEnumerator, Registrar, and RegistrarFactory interfaces.
univsc.cpp	The C++ source code for the CORBA C++ client application in the Security sample application.
frmBrowser.frm	The Visual Basic source code for the ActiveX client application in the Security sample application.
frmOpen.frm	The Visual Basic source code for the ActiveX client application in the Security sample application.
University.vbp	The Visual Basic project file for the ActiveX client application in the Security sample application.
University.vbw	The Visual Basic workspace file for the ActiveX client application in the Security sample application.
modPublicDeclarations.bas	A Visual Basic file that contains the declarations for variables used in the sample applications.
frmTracing.frm frmTracing.frx	The files that provide tracing capabilities to the ActiveX client application.
frmLogon.frm	The Visual Basic file that performs the security logon for the ActiveX client application.
UnivSApplet.java	The Java source code for the CORBA Java client application in the Security sample application.
univs_utils.h univs_utils.cpp	The files that define database access functions for the CORBA C++ client application.
univs.icf	The Implementation Configuration File (ICF) for the Security sample application.
setenvs.sh	A UNIX script that sets the environment variables needed to build and run the Security sample application.
setenvs.cmd	An MS-DOS command procedure that sets the environment variables needed to build and run the Security sample application.
ubb_s.mk	The UBBCONFIG file for the UNIX operating system.
ubb_s.nt	The UBBCONFIG file for the Windows 2000 operating system.
makefiles.mk	The makefile for the Security sample application on the UNIX operating system.
makefiles.nt	The makefile for the Security sample application on the Windows 2000 operating system.
log.cpp, log.h, log_client.cpp, and log_server.cpp	The client and server applications that provide logging and tracing functions for the sample applications. These files are located in the \utils directory.
oradbconn.cpp and oranoconn.cpp	The files that provide access to an Oracle SQL database instance. These files are located in the \utils directory.
samplesdb.cpp and samplesdb.h	The files that provide print functions for the database exceptions in the sample applications.These files are located in the \utils directory.
unique_id.cpp and unique_id.h	C++ Unique ID class routines for the sample applications.These files are located in the \utils directory.
samplesdbsql.h and samplesdbsql.pc	C++ class methods that implement access to the SQL database. These files are located in the \utils directory.
university.sql	The SQL for the University database. This file is located in the \utils directory.

Changing the Protection on the Files for the Security Sample Application

During the installation of the BEA Tuxedo software, the sample application files are marked read-only. Before you can edit the files or build the files in the Security sample application, you need to change the protection of the files you copied into your work directory, as follows:

Windows 2000

prompt>attrib -r drive:\workdirectory\*.*

UNIX

prompt>chmod u+rw /workdirectory/*.*

Setting the Environment Variables

Use the following command to set the environment variables used to build the client and server applications in the Security sample applications:

Windows 2000

prompt>setenvs

UNIX

prompt>/bin/ksh

prompt>. ./setenvs.sh

Initializing the University Database

Use the following command to initialize the University database used with the Security sample application:

Windows 2000

prompt>nmake -f makefiles.nt initdb

UNIX

prompt>make -f makefiles.mk initdb

Loading the UBBCONFIG File

Use the following command to load the UBBCONFIG file:

Windows 2000

prompt>tmloadcf -y ubb_s.nt

UNIX

prompt>tmloadcf -y ubb_s.mk

The build process for the UBBCONFIG file prompts you for an application password. This password will be used to log on to the client applications. Enter the password and press Enter. You are then prompted to verify the password by entering it again.

Compiling the Security Sample Application

During the development process, you would use the buildobjclient and buildobjserver commands to build the client and server applications. However, for the Security sample application, this step has been done for you.

The directory for the Security sample application contains a makefile that builds the client and server sample applications.

Use the following commands to build the CORBA C++ client and server applications in the Security sample application:

Windows 2000

prompt>nmake -f makefiles.nt

UNIX

prompt>make -f makefiles.mk

To build the CORBA Java client application:

Windows 2000

prompt>nmake -f makefiles.nt javaclient

UNIX

prompt>make -f makefiles.mk javaclient

For information about starting the ActiveX client application, see Starting the ActiveX Client Application.

For more information about the buildobjclient and buildobjserver commands, see BEA Tuxedo Command Reference.

Running the Security Sample Application

To run the Security sample application, complete the following steps:

Start the University server application.
Start one or more of the client applications.

These steps are explained in the following sections.

Starting the University Server Application

Start the system and sample application server applications in the Security sample application by entering the following command:

prompt>tmboot -y

This command starts the following server processes:

TMSYSEVT
The BEA Tuxedo system EventBroker.
TMFFNAME
The transaction management services, including the NameManager and the FactoryFinder services.
TMIFSRVR
The Interface Repository server process. This server process is used only by ActiveX client applications.
univs_server
The University server process.
ISL
The IIOP Listener/Handler process.

Before using another sample application, enter the following command to stop the system and sample application server processes:

prompt>tmshutdown

Starting the CORBA C++ Client Application

Start the CORBA C++ client application in the Security sample application by completing the following steps:

At the MS-DOS prompt, enter the following command:
prompt>univs_client
At the Enter student id: prompt, enter any number between 100001 and 100010.
Press Enter.
At the Enter domain password: prompt, enter the password you defined when you loaded the UBBCONFIG file.
Press Enter.

Starting the CORBA Java Client Application

To start the CORBA Java client application in the Security sample application, complete the following steps:

Modify the following lines in the UnivSApplet.html file:
code="UnivSApplet.class"
codebase=.
to read as follows:

code="UnivSApplet"
archive="UnivSApplet.jar,m3envobj.jar"
Copy the modified UnivSApplet.html file to the source directory for the Web server (the directory varies by Web server product).
After executing the makefile to build the Security sample application, create a UnivSApplet.jar file, as follows:
1. Create a tmp directory under the directory where you built the sample application and copy the UniversityS subdirectory and the class files it contains into the tmp directory.
  Copy the class files in the Security sample application directory that were generated by the makefile into the tmp directory, set the directory (cd) to the tmp directory, and issue one of the following commands to create a .JAR file that contains all the Security sample application classes:
  
  jar -cf ..\UnivSApplet.jar *.* (Microsoft Windows 2000 systems)
  jar -cf ../UnivSApplet.jar * (UNIX systems)
Copy the UnivSApplet.jar file you just created to the source directory for the Web server (the directory name varies by Web server product).
Copy the m3envobj.jar file from the appropriate subdirectory (%TUXDIR%\udataobj\java Microsoft Windows 2000 systems or ${TUXDIR}/udataobj/java UNIX systems) to the Web server source directory.
Make sure the Security server application is running, start up your Web browser, and point it to the node where the Web server is running.

Note: On Microsoft Windows 2000 systems, the node name needs to be in all uppercase characters. For example, if the node is specified as SERVER in the UBBCONFIG file and in the UnivSApplet.html file, set your browser to http://SERVER/UnivSApplet.html.

Enter a number between 100001 and 100010 in the student ID field.
Enter the password you defined when you loaded the UBBCONFIG file in the Domain Password field.
Click the Logon button.
Enter a search string to find a course.

Starting the ActiveX Client Application

Note: For the University sample applications, the task of loading the OMG IDL for the CORBA interfaces into the Interface Repository is automated by the makefile.

Before you can start the ActiveX client application, you must use the Application Builder to create ActiveX bindings for the CORBA interfaces.

To create an ActiveX binding for a CORBA interface, complete the following steps:

Click the BEA Application Builder icon in the BEA Tuxedo program group.
The IIOP Listener window appears.
In the IIOP Listener window, enter the host name and port number that you specified in the ISL parameter in the UBBCONFIG file. You must exactly match the capitalization used in the UBBCONFIG file.
The Logon window appears.
In the Logon window, enter a student ID between 100001 and 100010 for the username and the password you defined when you loaded the UBBCONFIG file.
The Application Builder window appears. All the CORBA interfaces loaded in the Interface Repository appear in the Services window of the Application Builder.
Highlight the UniversityS folder in the Services window and drag it to the Workstation Views window, or copy the UniversityS folder from the Services window and paste it into the Workstation Views window.
A confirmation window appears.
Click Create to create ActiveX bindings for the CORBA interfaces in the Security sample application.
The Application Builder creates the following:

To run the ActiveX client application, complete the following steps:

Open the University.vbw file in Visual Basic.
From the Run menu, click Start.
The IIOP Listener window appears.
In the IIOP Listener window, enter the host name and port number that you specified in the ISL parameter in the UBBCONFIG file. You must exactly match the capitalization used in the UBBCONFIG file.
The Logon window appears.
In the Logon window, enter a student ID between 100001 and 100010 for the username and the password you defined when you loaded the UBBCONFIG file.

Using the Client Applications in the Security Sample Application

The following sections briefly explain how to use the client applications in the Security sample application.

The CORBA C++ Client Application

The CORBA C++ client application in the Security sample application has the following additional option:

<L>    List your registered courses

This option displays the list of courses registered under the student ID that was used to log on to the CORBA C++ client application.

The CORBA Java Client Application

No additional functionality is added to the CORBA Java client application in the Security sample application.

The ActiveX Client Application

No additional functionality is added to the ActiveX client application in the Security sample application.