Yes, you can certainly do this using the CGI module. Note that you don't have to create a hash of variables, and use if (defined $cgi->param('DELIVERMESSAGE')){ ... directly, but then you will have to worry about casing - (what if the variable names are passed in lower case?)
#!C:/Perl/bin/perl.exe -w
use strict;
use CGI;
use Data::Dumper;

my $cgi = new CGI;
my @cgi_vars = $cgi->param();

if ($#cgi_vars < 0) {
    # handle the case of no CGI parameters
    # ...
    exit(0);
}

# build a (normalized) hash of CGI variables
# with variable name converted to upper case
my %vars = map { uc($_) => $cgi->param($_) } @cgi_vars;

# debug only - display the variable hash
#print Dumper(\%vars);

# Handle the requests
if (defined $vars{DELIVERMESSAGE}) {
   # do deliver message
   # ...

} elsif (defined $vars{MESSAGECOUNT} &&
         defined $vars{BRANCH}) {
   # do message count
   # $vars{BRANCH} is the branch name
   # ...

} elsif (defined ..... ) {
   # etc. etc.
}

[download]

In reply to Re: CGI Parameters by Roger
in thread CGI Parameters by Gerard

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.