#!perl
# Fig. 19.6: fig19_06.pl
# Guestbook program.

use warnings;
use strict;
use CGI qw( :standard );

print header(), start_html( "Guestbook" ), h1( "Guestbook" );

if ( param() ) {
   print h3( "Thank you for signing our guestbook!!!" ),
   
   my $name = param( "name" );
   my $email = param( "email" );
   my $message = param( "message" );

   open( FILE, ">>guestbook.log" ) or 
      die( "Can't open guestbook" );
   print( FILE "\n", hr(), "From: ", 
      a( { -href => "mailto:$email" }, $name ), br(), br(),
      $message );
   close( FILE );
}

open( FILE, "guestbook.log" ) or die( "Can't open guestbook" );

print while ( <FILE> );
close( FILE );

print( h4( "Please sign our guestbook:" ), start_form(),
   "Name: ", textfield( -name => "name" ), br(),
   "E-mail: ", textfield( -name => "email" ), br(),
   "Enter your message:", br(),
   textarea( -name => "message", -rows => 5, -columns => 50,
             -wrap => 1 ),
   br(), submit( -name => "Sign the Guestbook" ), end_form(),
   end_html() );

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