CGI Programming Using Perl

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This course bridges the gap between using HTML to create static Web pages and using Perl CGI scripts to create dynamic Web pages. The course emphasizes using the Perl 5 CGI library routines to process HTML forms by providing extensive working examples and by students writing applications to illustrate the concepts presented. This course is not intended to be a substitute for a Perl programming course.
Familiarity with HTML forms. Programming experience is required. Basic UNIX skills and the ability to use VI or a basic text editor are also required.
Course Introduction:
Course Objectives
Course Overview
Suggested References
The Internet and the Web:
TCP/IP and Ports
DNS vs. Hosts Files
Servers and Clients
Client/Server Protocols
Browsers and Servers:
WEB Browsers and Servers
The Hypertext Transfer Protocol
HTTP Requests and Responses
HTTP Headers
HTTP Requests
Mime Types
Introduction to CGI:
HTML Tag Structure
HTML Document Structure
URLs and CGI
CGI Programs
Running and Debugging from the Command Line
Running and Debugging from a Browser
Handling an HTML Form with CGI
Generating HTML
CGI and Perl:
Perl Programs
Why Use (and Where is It?)
Running and Debugging from the Command Line
Generating HTML with
Running and Debugging from a Browser
Generating HTML:
Introduction to
How to use's Online Documentation's Rules for General HTML Tags's Rules for HTML Form Tags
Named vs. Positional Parameters in
Generating Forms:
General Structure of HTML Forms
Form Element Tags
Popups and Listboxes
Textfields, Passwords, and Textareas
CGI Data Flow Architecture:
URL Encoding and Decoding
Data Flow between Browsers and Servers
Which to Use?
CGI Environment Variables
Accessing CGI's Environment Variables
Processing Form Data:
Static Forms
Dynamic Forms
Controlling Flow with User Input
Accessing Form Data Using
The param Method of
Sticky Widgets
Validating Input from the Browser
Command Line Debugging
Client-Side Statefulness:
Stateful vs Stateless
Why use Stateful CGI Applications?
Program to Program Interaction
Stateful Access with Hidden Fields
Multiple Forms and Hidden Fields
Stateful Access with Netscape Cookies
Using Cookies with
Cookie Management
Database Access:
Server-Side Statefulness
Flat-File Databases
Structuring Text Data
File Permissions and Flat-File Databases
Perl's DBM Interface
Perl's DBI/DBD Interface
Issues with Statefulness
Additional Web Programming:
Extra Path Information
Server Side Includes (SSI)
The exec command
A Page Hit Counter Using SSI
Animation Description
Netscape's Server Push
Client Pull
The Module
CGI Security Issues:
Browser to Server Security Issues
CGI Security Issues
CGI Interaction with the Operating System
Database / File System Overflow
CGI and User Authentication