Requests from Standard Search Isindex Documents

SCRIPT_NAME

A virtual path to the program being run. Use this for self-referring URLs.

SERVER_NAME

Contains the server host name or IP address of the server. For example:

www.ibm.com

SERVER_PORT

Contains the port number to which the client request was sent. For example:

SERVER_PROTOCOL

Contains the name and version of the information protocol that is used to make the request. For example:

HTTP/1.0

SERVER_SOFTWARE

Contains the name and version of the information server software that is answering the request. For example:

IBM-Secure-ICS/AS/400 Secure HTTP Server

Requests from Standard Search (ISINDEX) Documents

ISINDEX is an HTML tag that identifies the document as a standard search document and causes the browser to automatically generate an entry field. When information is sent from an ISINDEX document, the server takes the appended data (the information following the ?), breaks it at the pluses (+), and sends the data to the CGI program as command line arguments (argv). For example:

Note: It is possible to write CGI scripts that display all environment variables. At times these variables may include sensitive data such as user IDs and passwords for various products. Consequently, you must be careful about displaying environment variables in your CGI scripts, and you must be careful about who has access to them.

Passing SSL Environment Variables to a CGI Program

You can use the following SSL-related environment variables in CGI programs.

HTTPS

Returns ON if the system has completed an SSL handshake. It returns OFF if the exchange of signals to set up communications between two modems has failed. For example:

OFF

HTTPS_CLIENT_CERT

The entire certificate passed to the server from the client browser when SSL Client authentication is enabled. The format of the certificate is a BASE64 encoded string that represents the DER format of the X.509 certificate.

HTTPS_CLIENT_CERT_COUNTRY

The Country Code from the client certificate’s distinguished name. For example:

Chapter 1. Writing Common Gateway Interface Programs 15

AS/400E specifications

The IBM AS/400E, now more commonly known as IBM i, is a robust and versatile midrange server that has been designed to provide a comprehensive computing solution for businesses of all sizes. First introduced in the late 1980s, the AS/400 series has undergone multiple enhancements and rebranding, with the AS/400E being one of the notable iterations. This powerful platform is closely associated with IBM's commitment to reliability, scalability, and integrated business solutions.

One of the main features of the AS/400E is its highly integrated architecture that combines hardware and software into a cohesive system. This integration allows for seamless operations, reducing the complexity typically associated with managing disparate systems. The system is powered by IBM's proprietary OS/400 operating system, which has evolved into IBM i, featuring advanced capabilities like object-oriented programming, integrated database management, and security features that are essential for enterprise environments.

A key characteristic of the AS/400E is its robust database support, primarily through the use of DB2 for i. This integrated database management system enables efficient data handling and retrieval, facilitating real-time business analytics and reporting. Furthermore, the platform supports a variety of programming languages, including RPG, COBOL, and Java, making it flexible for developers who require diverse tools for application development.

The AS/400E is also known for its exceptional reliability and uptime, making it a preferred choice for critical business applications in industries such as finance, healthcare, and manufacturing. This reliability is backed by advanced error detection and correction mechanisms, as well as redundancy features that help prevent data loss and minimize downtime.

In terms of scalability, the AS/400E can effortlessly expand to accommodate growing business demands. Organizations can increase processing power by adding more resources without significant disruption. This scalability, combined with the system’s built-in virtualization capabilities, allows businesses to optimize resource usage and streamline operations.

Security is another defining feature of the AS/400E. The platform incorporates various layers of security measures, including user authentication, encryption, and comprehensive auditing capabilities, ensuring that sensitive business data is protected against unauthorized access.

Overall, the IBM AS/400E remains a powerful tool in the enterprise computing landscape, providing businesses with an integrated, reliable, and secure solution for their technological needs. Its enduring popularity is a testament to its capability to evolve with changing business requirements while maintaining its core attributes of high performance and stability.

IBM AS/400E manual Requests from Standard Search Isindex Documents

Models: AS/400E