Thank you

#!/opt/bin/perl
# -- -*-perl-*-

# Modified for return to any url by James Judd for ENS 950911

# ------------------------------------------------------------
# Form-mail.pl, by Reuven M. Lerner (reuven@the-tech.mit.edu).
#
# Last updated: March 14, 1994
#
# Form-mail provides a mechanism by which users of a World-
# Wide Web browser may submit comments to the webmasters
# (or anyone else) at a site.  It should be compatible with
# any CGI-compatible HTTP server.
# 
# Please read the README file that came with this distribution
# for further details.
# ------------------------------------------------------------

# ------------------------------------------------------------
# This package is Copyright 1994 by The Tech. 

# Form-mail is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.

# Form-mail is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with Form-mail; see the file COPYING.  If not, write to the Free
# Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
# ------------------------------------------------------------

# Define fairly-constants

# This should match the mail program on your system.
$mailprog = '/usr/lib/sendmail';

# This should be set to the username or alias that runs your
# WWW server.
$recipient = "listproc\@mail.auburn.edu";

# Print out a content-type for HTTP/1.0 compatibility
print "Content-type: text/html\n\n";
# Print a title and initial heading
print "<Head><Title>Thank you</Title></Head>";
print "<Body><H1>Thank you</H1>";

# Get the input
read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});

# Split the name-value pairs
@pairs = split(/&/, $buffer);

foreach $pair (@pairs)
{
    ($name, $value) = split(/=/, $pair);

    # Un-Webify plus signs and %-encoding
    $value =~ tr/+/ /;
    $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;

    # Stop people from using subshells to execute commands
    # Not a big deal when using sendmail, but very important
    # when using UCB mail (aka mailx).
    # $value =~ s/~!/ ~!/g; 

    # Uncomment for debugging purposes
    # print "Setting $name to $value<P>";

    $FORM{$name} = $value;
}

# Decide for Subscribe or Unsubscribe

if ($FORM{'subun'} eq 'sub') {
# Now send mail to $recipient

open (MAIL, "|$mailprog -f $FORM{'username'} $recipient") || die "Can't open $mailprog!\n";
print MAIL "sub $FORM{'listname'} $FORM{'firstlast'}\n";
close (MAIL);

# Make the person feel good for writing to us
print "<p>You have been added the the $FORM{'listname'} mailing list.";
print "<p>You should recieve a subscription notice within the next 24 hours.";

$FORM{'retdesc'} =~ tr/_/ /;

if ($FORM{'returl'} ne "")
  { 
    print "<A HREF=\"$FORM{'returl'}\"> $FORM{'retdesc'}</A>.</p>";
  }
else
  {
    print "<A HREF=\"/users/$username\"> go back.</A></p>";
  }
}

# ------------------------------------------------------------

else {
# Now send mail to $recipient

open (MAIL, "|$mailprog -f $FORM{'username'} $recipient") || die "Can't open $mailprog!\n";
print MAIL "signoff $FORM{'listname'}\n";
close (MAIL);

# Make the person feel good for writing to us
print "<p>You have been removed the the $FORM{'listname'} mailing list.";
print "<p>You should recieve confirmation within the next 24 hours.<p>";

$FORM{'retdesc'} =~ tr/_/ /;

if ($FORM{'returl'} ne "")
  { 
    print "<A HREF=\"$FORM{'returl'}\"> $FORM{'retdesc'}</A>.</p>";
  }
else
  {
    print "<A HREF=\"/users/$username\"> go back.</A></p>";
  }
}
# --------------------------------------------------------