Perl Tutorials

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Introduction and Overview What This Tutorial Is Not What This Tutorial Will Provide The Layout of This Tutorial CPAN History CPAN Motivation CPAN Layout A Perl5 Overview and Tutorial Usability and Simplicity Lexical Scoping Data Structures Modules and Libraries Extensible and Embeddable Enhanced Safety and Security Other New Features in Perl5 References The Short History of Perl Extensions Modules and Extensions: Purpose and Design A simple extension module. Using the simple extension module. Using a blessed reference to invoke methods from the Foo module. The Customer module. Using the Customer module. Object-Oriented Techniques Subclassing the Customer module. Using the MyCust subclass. Overriding Customers methods. Using the overridden method in MyCust. Augmenting base class methods. Practical Issues for Using Modules: Downloading and Installation Summary Security on the Web Server Configuration Options File Permissions Setup and Monitoring Changes in the System General ConsiderationsGlobal versus Local Configuration of Permissions Directory Access Configuration Whos There? Configuring Client IP/Domain Restrictions Whos There? User/Group Verification Changing Passwords from the Web Monitoring Userids General Considerations: Dos and Donts Tools for Executing CGI Safely The Safe Module Transaction Security Simplified PGP Transactions Using the PGP Module Running httpd in the chroot(2)Environment Problems with Specific Servers Monitoring Filesystem Changes,Network Security, and Analyzing Password Security Further Reading HTML FormsThe Foundation of an Interactive Web Text Fields Password Fields Radio Buttons Checkboxes Hidden Fields Submit Buttons Image Buttons Listboxes Popup Menus File-Upload Fields Image Maps Generating HTML On-the-Fly with Perl5 Constructing Headers Perl code for customer questionnaire. Included Files Perl subroutine for including another HTML file. parsessi.pl CGI program for including and parsing a .shtml file. Other Elements Within Elements Perl code that emits a form formatted using the <TABLE> object. Other Objects: Applets, Images, Animation, and the <EMBED> Tag What Forms Cannot Provide Putting It All Together HTTP Transactions The Connection The Request Table 5.1. HTTP FullRequest methods. Table 5.2. URI Characters That Must Be Encoded. Table 5.3. Headers. What Happens after the Request The Response CGI.pm versus Individual libwww Modules URL: Using CGI.pm with forms Open a new browser window Example 3: Upload a File to the Server Upload a file to the server Using the HTTP::Request Module Directly MIME Documents MIME, WWW, and CGI The Content-Type Header Field How MIME Data Is Encoded Q Quoted-Printable Encoding Using MIME::Base64 MIME attachment Using MIME::QuotedPrint Determining Fields of Information Setting Up the Database Perl subroutine for printing the guest book form. Perl subroutine to process the form data. Main Perl guest book CGI program. CGI program to display the guest list. Setting Up the Web Server to Log Access Parsing the Access Log Perl subroutine to count the number of hits on a given page. CGI script that displays a graphical hit counter. Parsing the AgentLog Clickable Maps Creating an Image Creating the Map Clickable image CGI example. Text File Search Subroutine to return a search form. Subroutine to search for a list of words. Displaying the Results A simple CGI searching program. Displaying the Form Subroutine to print a license plate form. Subroutine to search for a specific license plate in the database. Subroutine to print the information found about the license plate. Subroutine for sending e-mail notification. The license plate notification CGI program. Database Access DBI Records to be imported into database Program that imports data into an mSQL database Create an HTML Index from a Database Program that writes HTML from the database about a single item in the database. Searching the database for keywords Open Database Connectivity (ODBC) AgentsWeb Scanning, Mirroring, and Background Tasks Stock Quotes on the Hour HTML returned by the Security APL Quote Server. Automatic stock quote retriever (getquote.pl). Subroutine to extract the quote information. General purpose URL retriever going through a firewall. Generating Web Indexes Web RobotsSpiders The crawlIt() main function of the Web spider. Converting a relative URL to an absolute URL. Writing the title and URL to the log file. Specifying the starting points and stopping points. Mirroring Remote Sites Modified function to convert relative URLs to absolute URLs. Modified crawlIt() function for mirroring a site. Search Engines On-Site Searching with Glimpse GlimpseHTTP Search the Web with WWW::Search a real world example of WWW::Search. Datebooks, Calendars, and Scheduling on the Web HyperCalA Modular Perl5 Calendar and Datebook hypercal.cgi Variables and configuration file for HyperCal. Displaying Appointments on a Specific Day: disp_day.cgi add_date.cgi. password.change. Multimedia GD::Image Module GD::Polygon Module GD::Font Module Hangman Using the GD Module Server Push Animation Techniques Embedding AVI, QuickTime, WAV, and GIF89a within HTML Implementation Issues Maintaining a Persistent State Dynamic Generation of Forms Security MiniVend Package Installation and Configuration Overview of Features Use and Customization Setting Up Your Product Catalog Setting Up Your minivend.cfg File The main catalog page. The search page. The browse page. The results display page. The order page. Frames Additional Tools for Administration of Your Site A Few Words About Security General Archive Management Considerations Planning, Design,and Layout Revision Control Summary of Archive Management Issues General Parsing Issues simpleparse. simpleparse-net. Editing and Verifying HTML relativize. Parsing HTTP Logfiles GD_Logfile.pm. GD_Logfile.test. Converting Existing Documentation to HTML Making Existing Archives Available via HTTP Client-Side Perl Embedded Perl Interpreter in a
Web Browser Executing Perl as a Helper Application HelperAppPerl. PenguinA New Paradigm in Remote Execution Parsing Netscape History Files The Need for an Extended Session A very simple calculator A personal notepad. A Web-based command shell. Embedded ObjectsAn Internet Proposal Netscape Cookies and Other Netscape Feature Tags Summary