#!/usr/bin/perl

print "Content-type:text/html\n\n";

read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
@pairs = split(/&/, $buffer);
@keys = ();
foreach $pair (@pairs) {
    ($name, $value) = split(/=/, $pair);
    $value =~ tr/+/ /;
    $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
    push(@keys, $name);
    $FORM{$name} = $value;
}
$mailprog = '/usr/sbin/sendmail';

# change this to your own email address

$recipient = 'nullbox@cgi101.com';
 
# this opens an output stream and pipes it directly to the sendmail
# program.  If sendmail can't be found, abort nicely by calling the
# dienice subroutine (see below)

open (MAIL, "|$mailprog -t") or &dienice("Can't access $mailprog!\n");

# here we're printing out the header info for the mail message. You must
# specify who it's to, or it won't be delivered:

print MAIL "To: $recipient\n";

# Reply-to can be set to the email address of the sender, assuming you
# have actually defined a field in your form called 'email'.

print MAIL "Reply-to: $FORM{'email'} ($FORM{'name'})\n";

# print out a subject line so you know it's from your form cgi.
# The two \n\n's end the header section of the message.  anything
# you print after this point will be part of the body of the mail.

print MAIL "Subject: Form Data\n\n";

# here you're just printing out all the variables and values, just like
# before in the previous script, only the output is to the mail message
# rather than the followup HTML page.

foreach $key (@keys) {
    print MAIL "$key = $FORM{$key}\n";
}

# when you finish writing to the mail message, be sure to close the
# input stream so it actually gets mailed.

close(MAIL);

# now print something to the HTML page, usually thanking the person
# for filling out the form, and giving them a link back to your homepage

print <<EndHTML;
<h2>Thank You</h2>
Thank you for writing.  Your mail has been delivered.<p>
Return to our <a href="index.html">home page</a>.
</body></html>
EndHTML
;

sub dienice {
    ($errmsg) = @_;
    print "<h2>Error</h2>\n";
    print "$errmsg<p>\n";
    print "</body></html>\n";
    exit;
}