Probleem met formmail.pl en reCaptcha

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quote1

Nieuwe gebruiker
Lid geworden
14 apr 2014
Berichten
1
Ik heb recaptcha werkend via formmail.pl en dat gaat goed. Maar wat niet werkt is de fout melding voor als iemand het verkeerde antwoord invult.
Dan krijg ik een 'Internal Server Error' in plaats van 'Error: Captcha Check Failed'.
Deze pagina heb ik gebruikt voor wat ik moest doen: https://developers.google.com/recaptcha/docs/formmail

Ik zal de complete tekst hier toevoegen. Gevoelige informatie is uiteraard aangepast.
Ik hoop dat jullie me kunnen helpen.

#!/usr/bin/perl

##############################################################################
# FormMail Version 1.9s-p7 #
# Copyright 1995-2001 Matt Wright mattw@worldwidemart.com #
# Created 06/09/95 Last Modified 02/24/02 00:34:00 PST #
# Matt's Script Archive, Inc.: http://www.worldwidemart.com/scripts/ #
# Enhanced Security Version: ftp://ftp.monkeys.com/pub/formmail/ #
##############################################################################
# COPYRIGHT NOTICE #
# Copyright 1995-2001 Matthew M. Wright All Rights Reserved. #
# #
# FormMail may be used and modified free of charge by anyone so long as this #
# copyright notice and the comments above remain intact. By using this #
# code you agree to indemnify Matthew M. Wright from any liability that #
# might arise from its use. #
# #
# Selling the code for this program without prior written consent is #
# expressly forbidden. In other words, please ask first before you try and #
# make money off of my program. #
# #
# Obtain permission before redistributing this software over the Internet or #
# in any other medium. In all cases copyright and header must remain intact #
##############################################################################
# ACCESS CONTROL FIX: Peter D. Thompson Yezek #
# http://www.securityfocus.com/archive/1/62033 #
##############################################################################
use LWP::UserAgent;

# MULTIPLE SECURITY FIXES: Ronald F. Guilmette; February 16, 2002 #
#############################################################################
# Define Variables #
# Detailed Information Found In README File. #

# $mailprog defines the location of your sendmail program on your unix #
# system. (For FreeBSD, change this to "/usr/sbin/sendmail".) #

$mailprog = '/usr/sbin/sendmail';

# $mail_admin defines the e-mail address that should be used as the #
# SMTP envelope sender address. This will be the address to which #
# FormMail-generated messages will be bounced if they are ever found #
# to be undeliverable for any reason. NOTE: This should be some #
# e-mail address that is ROUTINELY and FREQUENTLY monitored. #

# NOTE! NOTE NOTE! RFC 2821 absolutely _requires_ every mail server to
# have a working postmaster e-mail address. If you don't have one then
# for God's sake GET ONE! This means YOU!

$mail_admin = "postmaster";

# @recipient_addresses defines the e-mail addresses that e-mail can #
# be sent to. This must be filled in correctly to prevent SPAM and allow #
# valid addresses to receive e-mail. Read the documentation to find out how #
# this variable works!!! It is EXTREMELY IMPORTANT. #

@recipient_addresses = ();

# @recipient_domains defines the e-mail domains that e-mail can #
# be sent to. This must be filled in correctly to prevent SPAM and allow #
# valid addresses to receive e-mail. Read the documentation to find out how #
# this variable works!!! It is EXTREMELY IMPORTANT. #

@recipient_domains = ('mydomain.com');

# ACCESS CONTROL FIX: Peter D. Thompson Yezek #
# @valid_ENV allows the sysadmin to define what environment variables can #
# be reported via the env_report directive. This was implemented to fix #
# the problem reported at http://www.securityfocus.com/bid/1187 #

@valid_ENV = ('REMOTE_HOST','REMOTE_ADDR','REMOTE_USER','HTTP_USER_AGENT');

# Done #
##############################################################################

# Retrieve Date
&get_date;

# Parse Form Contents
&parse_form;

# Check Required Fields
&check_required;

# Check the captcha challenge and response.
&check_captcha;

# Send E-Mail
&send_mail;

##############################################################################
# Check the CAPTCHA response via the reCAPTCHA service.
sub check_captcha {

my $ua = LWP::UserAgent->new();
my $result=$ua->post(
'http://www.google.com/recaptcha/api/verify',
{
privatekey => 'my private key',
remoteip => $ENV{'REMOTE_ADDR'},
challenge => $Form{'recaptcha_challenge_field'},
response => $Form{'recaptcha_response_field'}
});

if ( $result->is_success && $result->content =~ /^true/) {
return;
} else {
&error('captcha_failed');
}
}



# Return HTML Page or Redirect User
&return_html;

sub get_date {

# Define arrays for the day of the week and month of the year. #
@days = ('Sunday','Monday','Tuesday','Wednesday',
'Thursday','Friday','Saturday');
@months = ('January','February','March','April','May','June','July',
'August','September','October','November','December');

# Get the current time and format the hour, minutes and seconds. Add #
# 1900 to the year to get the full 4 digit year. #
($sec,$min,$hour,$mday,$mon,$year,$wday) = (localtime(time))[0,1,2,3,4,5,6];
$time = sprintf("%02d:%02d:%02d",$hour,$min,$sec);
$year += 1900;

# Format the date. #
$date = "$days[$wday], $months[$mon] $mday, $year at $time";

}

sub parse_form {

# Define the configuration associative array. #
%Config = ('recipient','', 'subject','',
'email','', 'realname','',
'redirect','', 'bgcolor','',
'background','', 'link_color','',
'vlink_color','', 'text_color','',
'alink_color','', 'title','',
'sort','', 'print_config','',
'required','', 'env_report','',
'return_link_title','', 'return_link_url','',
'print_blank_fields','', 'missing_fields_redirect','');

# Determine the form's REQUEST_METHOD (GET or POST) and split the form #
# fields up into their name-value pairs. If the REQUEST_METHOD was #
# not GET or POST, send an error. #
if ($ENV{'REQUEST_METHOD'} eq 'GET') {
# Split the name-value pairs
@pairs = split(/&/, $ENV{'QUERY_STRING'});
}
elsif ($ENV{'REQUEST_METHOD'} eq 'POST') {
# Get the input
read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});

# Split the name-value pairs
@pairs = split(/&/, $buffer);
}
else {
&error('request_method');
}

# For each name-value pair: #
foreach $pair (@pairs) {

# Split the pair up into individual variables. #
local($name, $value) = split(/=/, $pair);

# Decode the form encoding on the name and value variables. #
$name =~ tr/+/ /;
$name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;

# Avoid any and all cross-site scripting security holes by re-coding
# any < or > or " characters into their HTML equivalents.
$name =~ s/</\&lt;/g;
$name =~ s/>/\&gt;/g;
$name =~ s/"/\&quot;/g;

$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;

# Avoid any and all cross-site scripting security holes by re-coding
# any < or > or " characters into their HTML equivalents.
$value =~ s/</\&lt;/g;
$value =~ s/>/\&gt;/g;
$value =~ s/"/\&quot;/g;

# If the field name has been specified in the %Config array, it will #
# return a 1 for defined($Config{$name}}) and we should associate #
# this value with the appropriate configuration variable. If this #
# is not a configuration form field, put it into the associative #
# array %Form, appending the value with a ', ' if there is already a #
# value present. We also save the order of the form fields in the #
# @Field_Order array so we can use this order for the generic sort. #
if (defined($Config{$name})) {
$Config{$name} = $value;
}
else {
if ($Form{$name} && $value) {
$Form{$name} = "$Form{$name}, $value";
}
elsif ($value) {
push(@Field_Order,$name);
$Form{$name} = $value;
}
}
}

# The next six lines remove any extra spaces or new lines from the #
# configuration variables, which may have been caused if your editor #
# wraps lines after a certain length or if you used spaces between field #
# names or environment variables. #
$Config{'required'} =~ s/(\s+|\n)?,(\s+|\n)?/,/g;
$Config{'required'} =~ s/(\s+)?\n+(\s+)?//g;
$Config{'env_report'} =~ s/(\s+|\n)?,(\s+|\n)?/,/g;
$Config{'env_report'} =~ s/(\s+)?\n+(\s+)?//g;
$Config{'print_config'} =~ s/(\s+|\n)?,(\s+|\n)?/,/g;
$Config{'print_config'} =~ s/(\s+)?\n+(\s+)?//g;

# Split the configuration variables into individual field names. #
@Required = split(/,/,$Config{'required'});
@Env_Report = split(/,/,$Config{'env_report'});
@Print_Config = split(/,/,$Config{'print_config'});

# ACCESS CONTROL FIX: Only allow ENV variables in @valid_ENV in #
# @Env_Report for security reasons. #
foreach $env_item (@Env_Report) {
foreach $valid_item (@valid_ENV) {
if ( $env_item eq $valid_item ) { push(@temp_array, $env_item) }
}
}
@Env_Report = @temp_array;
}

sub check_required {

# Localize the variables used in this subroutine. #
local($require, @error);

$Config{'recipient'} = "" unless ($Config{'recipient'});

# Removed any poisoned nul bytes that may be present in the recipient CGI
# parameter, just in case. They might cause wacky behavior from some
# mail servers. See http://www.wiretrip.net/rfp/p/doc.asp/i2/d6.htm

$Config{'recipient'} =~ tr /\0//d if ($Config{'recipient'});

# Clean up the recipient CGI parameter further by replacing
# all sequences of whitespace characters (including any possible
# carriage returns and newlines) with a single space character.

$Config{'recipient'} =~ s/\s+/ /gs if ($Config{'recipient'});

# This block of code ensures that each comma-delimited substring of
# the CGI recipient parameter ends with either an authorized domain
# name or an authorized e-mail address as defined in @recipients.

outer:
foreach $send_to (split(/,/,$Config{'recipient'})) {

# Eliminate any spurious leading or trailing whitespace in this
# particular comma-separated subpart of the $Config{'recipient'}
# CGI parameter value passed to the script.

$send_to =~ s/^ //;
$send_to =~ s/ $//;

# Check that we still have a non-empty string.

bad_recipient ("") unless ($send_to);

# Syntax check the recipient address and fail if it is syntatically
# invalid.

if ($send_to =~ m/\@$/) {
bad_recipient ($send_to);
} elsif ($send_to =~ m/^(.+)\@([^\@]+)$/) {
$cgi_userid = $1;
$cgi_domain = $2;
bad_recipient ($send_to) unless (valid_userid ($cgi_userid));
bad_recipient ($send_to) unless (valid_domain ($cgi_domain));
} else { # $send_to contains _zero_ at-signs
$cgi_userid = $send_to;
undef $cgi_domain;
bad_recipient ($send_to) unless (valid_userid ($cgi_userid));
}

# Check for matches with the @recipient_addresses array.

# Note that we check the validity of the elements of the
# @recipient_addresses array itself (as we go) here also.

# Allow for both local addresses (like "joe") and potentially
# non-local addresses (like "joe@example.com") here.

# @domain portions, if present, are compared case-insensitively,
# however user-ID portions are compared case-sensitively.

foreach $recipient_address (@recipient_addresses) {
if ($recipient_address =~ m/\@$/) {
error ('invalid_config_addr', $recipient_address);
} elsif ($recipient_address =~ m/^(.+)\@([^\@]+)$/) {
$conf_userid = $1;
$conf_domain = $2;
error ('invalid_config_addr', $recipient_address)
if (!valid_userid ($conf_userid));
error ('invalid_config_addr', $recipient_address)
if (!valid_domain ($conf_domain));
} else { # $recipient_address contains _zero_ at-signs
$conf_userid = $recipient_address;
undef $conf_domain;
error ('invalid_config_addr', $recipient_address)
if (!valid_userid ($conf_userid));
}

if (($cgi_userid eq $conf_userid)
&& (defined $cgi_domain == defined $conf_domain)) {
if (!defined $cgi_domain
|| (defined $cgi_domain
&& lc ($cgi_domain) eq lc ($conf_domain))) {
push @send_to, $send_to;
next outer;
}
}
}

# Check for matches with the @recipient_domains array.

# Note that we check the validity of the elements of the
# @recipient_domains array itself (as we go) here also.

# Allow for both specific domain names (like "example.com") and
# prefix wild-carded domains (like "*.example.com") here.

foreach $recipient_domain (@recipient_domains) {
if ($recipient_domain =~ m/^\*\.(.+)$/) {
$wild_carded = 1;
$conf_domain = $1;
} else {
$wild_carded = 0;
$conf_domain = $recipient_domain;
}
error ('invalid_config_domain', $recipient_domain)
if (!valid_domain ($conf_domain));

# Only for CGI parameter e-mail addresses that have a @domain
# suffix. Check to see if the domain part matches something from
# the @recipient_domains array. If the CGI parameter address
# doesn't have an @domain part, then skip these checks. We can't
# match it against anything in @recipient_domains in that case.

if (defined $cgi_domain) {

# When we are doing domain name matching, disallow ``tricky''
# e-mail addresses where the user-ID parts contain percent
# signs or exclamation points. These could otherwise be
# used to direct the e-mail output of this script to some
# unintended destinations.

next if ($cgi_userid =~ m/(\%|\!)/);

if ($wild_carded) {
$dot_conf_domain = "." . $conf_domain;
$tail = substr ($cgi_domain, - length ($dot_conf_domain));
if (lc ($tail) eq lc ($dot_conf_domain)) {
push @send_to, $send_to;
next outer;
}
} else {
if (lc ($cgi_domain) eq lc ($conf_domain)) {
push @send_to, $send_to;
next outer;
}
}
}
}
# If we make it this far, then $send_to did not match anything
bad_recipient ($send_to);
}
if ($#send_to < 0) {
&error('no_recipient')
}
$Config{'recipient'} = join(',',@send_to);

# Removed any poisoned nul bytes that may be present in the email CGI
# parameter, just in case. They might cause wacky behavior from some
# mail servers. See http://www.wiretrip.net/rfp/p/doc.asp/i2/d6.htm

$Config{'email'} =~ tr /\0//d if ($Config{'email'});

# Clean up the email CGI parameter further by replacing
# all sequences of whitespace characters (including any possible
# carriage returns and newlines) with a single space character.

$Config{'email'} =~ s/\s+/ /gs if ($Config{'email'});

# Removed any poisoned nul bytes that may be present in the realname CGI
# parameter, just in case. They might cause wacky behavior from some
# mail servers. See http://www.wiretrip.net/rfp/p/doc.asp/i2/d6.htm

$Config{'realname'} =~ tr /\0//d if ($Config{'realname'});

# Clean up the realname CGI parameter further by replacing
# all sequences of whitespace characters (including any possible
# carriage returns and newlines) with a single space character.

$Config{'realname'} =~ s/\s+/ /gs if ($Config{'realname'});

# Removed any poisoned nul bytes that may be present in the subject CGI
# parameter, just in case. They might cause wacky behavior from some
# mail servers. See http://www.wiretrip.net/rfp/p/doc.asp/i2/d6.htm

$Config{'subject'} =~ tr /\0//d if ($Config{'subject'});

# Clean up the subject CGI parameter further by replacing
# all sequences of whitespace characters (including any possible
# carriage returns and newlines) with a single space character.

$Config{'subject'} =~ s/\s+/ /gs if ($Config{'subject'});

# For each require field defined in the form: #
foreach $require (@Required) {

# If the required field is the email field, the syntax of the email #
# address if checked to make sure it passes a valid syntax. #
if ($require eq 'email' && !&valid_address($Config{$require})) {
push(@error,$require);
}

# Otherwise, if the required field is a configuration field and it #
# has no value or has been filled in with a space, send an error. #
elsif (defined($Config{$require})) {
if (!$Config{$require}) {
push(@error,$require);
}
}

# If it is a regular form field which has not been filled in or #
# filled in with a space, flag it as an error field. #
elsif (!$Form{$require}) {
push(@error,$require);
}
}

# If any error fields have been found, send error message to the user. #
if (@error) { &error('missing_fields', @error) }
}

sub bad_recipient {
my ($send_to) = @_;
my $script_url;
my $client_ip;
my $orig_recipient_param;

$script_url = "http://" . $ENV{'SERVER_NAME'} . ":" .
$ENV{'SERVER_PORT'} . $ENV{'SCRIPT_NAME'};

$client_ip = "[" . $ENV{'REMOTE_ADDR'} . "]";

$orig_recipient_param = $Config{'recipient'};

# Send a notice regarding possible script abuse to the $mail-admin

open(MAIL,"|$mailprog -bm -f $mail_admin $mail_admin");

print MAIL "To: $mail_admin\n";
print MAIL "From: $script_url\n";
print MAIL "Subject: Possible FormMail Script Abuse Detected\n";
print MAIL "X-Generated-By: Matt Wright's FormMail.pl v1.9s-p7\n";
print MAIL "X-Script-URL: $script_url\n";
print MAIL "X-Originating-IP: $client_ip\n\n";

print MAIL "A possible case of attempted FormMail script abuse has\n";
print MAIL "been detected. The attempt originated from $client_ip.\n";
print MAIL "Additional details follow...\n\n";
print MAIL "URL: $script_url\n";
print MAIL "Recipient Parameter: $orig_recipient_param\n";

close MAIL;

error ('invalid_recipient', $send_to);
}

sub return_html {
# Local variables used in this subroutine initialized. #
local($key,$sort_order,$sorted_field);

# If redirect option is used, print the redirectional location header. #
if ($Config{'redirect'}) {
# Remove newlines, carriage returns and whitespace generally from
# $Config{'redirect'}. We don't want to allow clients to generate
# their own added HTTP headers after all, now do we?
$Config{'redirect'} =~ s/\s//g;
print "Location: $Config{'redirect'}\n\n";
}

# Otherwise, begin printing the response page. #
else {

# Print HTTP header and opening HTML tags. #
print "Content-type: text/html; charset=iso-8859-1\n\n";
print "<html>\n <head>\n";

# Print out title of page #
if ($Config{'title'}) { print " <title>$Config{'title'}</title>\n" }
else { print " <title>Thank You</title>\n" }

print " </head>\n <body";

# Get Body Tag Attributes #
&body_attributes;

# Close Body Tag #
print ">\n <center>\n";

# Print custom or generic title. #
if ($Config{'title'}) { print " <h1>$Config{'title'}</h1>\n" }
else { print " <h1>Hartelijk dank voor het invullen van het formulier</h1><br>\n" }

print "</center>\n";

print "Hieronder staat vermeld wat is toegezonden aan $Config{'recipient'} op ";
print "$date<p><hr size=1 width=75\%><p>\n";

# Sort alphabetically if specified: #
if ($Config{'sort'} eq 'alphabetic') {
foreach $field (sort keys %Form) {

# If the field has a value or the print blank fields option #
# is turned on, print out the form field and value. #
if ($Config{'print_blank_fields'} || $Form{$field}) {
print "<b>$field:</b> $Form{$field}<p>\n";
}
}
}

# If a sort order is specified, sort the form fields based on that. #
elsif ($Config{'sort'} =~ /^order:.*,.*/) {

# Set the temporary $sort_order variable to the sorting order, #
# remove extraneous line breaks and spaces, remove the order: #
# directive and split the sort fields into an array. #
$sort_order = $Config{'sort'};
$sort_order =~ s/(\s+|\n)?,(\s+|\n)?/,/g;
$sort_order =~ s/(\s+)?\n+(\s+)?//g;
$sort_order =~ s/order://;
@sorted_fields = split(/,/, $sort_order);

# For each sorted field, if it has a value or the print blank #
# fields option is turned on print the form field and value. #
foreach $sorted_field (@sorted_fields) {
if ($Config{'print_blank_fields'} || $Form{$sorted_field}) {
print "<b>$sorted_field:</b> $Form{$sorted_field}<p>\n";
}
}
}

# Otherwise, default to the order in which the fields were sent. #
else {

# For each form field, if it has a value or the print blank #
# fields option is turned on print the form field and value. #
foreach $field (@Field_Order) {
if ($Config{'print_blank_fields'} || $Form{$field}) {
print "<b>$field:</b> $Form{$field}<p>\n";
}
}
}

print "<p><hr size=1 width=75%><p>\n";

# Check for a Return Link and print one if found. #
if ($Config{'return_link_url'} && $Config{'return_link_title'}) {
print "<ul>\n";
print "<li><a href=\"$Config{'return_link_url'}\">$Config{'return_link_title'}</a>\n";
print "</ul>\n";
}

# Print the page footer. #
print <<"(END HTML FOOTER)";
<hr size=1 width=75%><p>
<center>

<script LANGUAGE="JavaScript">
function goHist(a)
{history.go(a);}
</script>
<form METHOD="post">
<p align="center">
<input TYPE="button" VALUE=" Vorige pagina "onClick="goHist(-1)">
</form>
</center>
</body>
</html>
(END HTML FOOTER)
}
}

sub send_mail {
# Localize variables used in this subroutine. #
local($print_config,$key,$sort_order,$sorted_field,$env_report);

my $script_url;
my $client_ip;

$script_url = "http://" . $ENV{'SERVER_NAME'} . ":" .
$ENV{'SERVER_PORT'} . $ENV{'SCRIPT_NAME'};

$client_ip = "[" . $ENV{'REMOTE_ADDR'} . "]";

# Open The Mail Program
open(MAIL,"|$mailprog -bm -f $mail_admin -t");

print MAIL "To: $Config{'recipient'}\n";
print MAIL "From: $Config{'email'} ($Config{'realname'})\n";

# Check for Message Subject
if ($Config{'subject'}) { print MAIL "Subject: $Config{'subject'}\n" }
else { print MAIL "Subject: WWW Form Submission\n" }

print MAIL "X-Generated-By: Matt Wright's FormMail.pl v1.9s-p7\n";
print MAIL "X-Script-URL: $script_url\n";
print MAIL "X-Originating-IP: $client_ip\n\n";

print MAIL "Below is the result of your feedback form. It was submitted by\n";
print MAIL "$Config{'realname'} ($Config{'email'}) on $date\n";
print MAIL "-" x 75 . "\n\n";

if (@Print_Config) {
foreach $print_config (@Print_Config) {
if ($Config{$print_config}) {
print MAIL "$print_config: $Config{$print_config}\n\n";
}
}
}

# Sort alphabetically if specified: #
if ($Config{'sort'} eq 'alphabetic') {
foreach $field (sort keys %Form) {

# If the field has a value or the print blank fields option #
# is turned on, print out the form field and value. #
if ($Config{'print_blank_fields'} || $Form{$field} ||
$Form{$field} eq '0') {
print MAIL "$field: $Form{$field}\n\n";
}
}
}

# If a sort order is specified, sort the form fields based on that. #
elsif ($Config{'sort'} =~ /^order:.*,.*/) {

# Remove extraneous line breaks and spaces, remove the order: #
# directive and split the sort fields into an array. #
$Config{'sort'} =~ s/(\s+|\n)?,(\s+|\n)?/,/g;
$Config{'sort'} =~ s/(\s+)?\n+(\s+)?//g;
$Config{'sort'} =~ s/order://;
@sorted_fields = split(/,/, $Config{'sort'});

# For each sorted field, if it has a value or the print blank #
# fields option is turned on print the form field and value. #
foreach $sorted_field (@sorted_fields) {
if ($Config{'print_blank_fields'} || $Form{$sorted_field} ||
$Form{$sorted_field} eq '0') {
print MAIL "$sorted_field: $Form{$sorted_field}\n\n";
}
}
}

# Otherwise, default to the order in which the fields were sent. #
else {

# For each form field, if it has a value or the print blank #
# fields option is turned on print the form field and value. #
foreach $field (@Field_Order) {
if ($Config{'print_blank_fields'} || $Form{$field} ||
$Form{$field} eq '0') {
print MAIL "$field: $Form{$field}\n\n";
}
}
}

print MAIL "-" x 75 . "\n\n";

# Send any specified Environment Variables to recipient. #
foreach $env_report (@Env_Report) {
if ($ENV{$env_report}) {
print MAIL "$env_report: $ENV{$env_report}\n";
}
}

close (MAIL);
}

sub valid_userid {
my ($userid) = @_;

# Disallow most special characters from the RFC 822/2822 reserved
# character set in order to prevent tricky spammers from using
# tricky e-mail address formats to trick this script into sending
# e-mail to places where the installer did not intend to allow it
# to go.

return ($userid =~ m/[\(\)\[\]\{\}<>:;\@]/) ? 0 : 1;
}

sub valid_domain {
my ($dom) = @_;

if ($dom =~ m/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/) {
return 1;
} elsif ($dom =~ m/^([a-z0-9]+(?:-+[a-z0-9]+)*\.)+[a-z]+$/i) {
return 1;
} else {
return 0;
}
}

# Check that a full e-mail address of the form "user@domain" has valid
# overall syntax.

sub valid_address {
# Initialize local email variable with input to subroutine. #
$email = $_[0];

return ($email =~ m/^(.+)\@([^\@]+)$/
&& valid_userid ($1)
&& valid_domain ($2)) ? 1 : 0;
}

sub body_attributes {
# Check for Background Color
if ($Config{'bgcolor'}) { print " bgcolor=\"$Config{'bgcolor'}\"" }

# Check for Background Image
if ($Config{'background'}) { print " background=\"$Config{'background'}\"" }

# Check for Link Color
if ($Config{'link_color'}) { print " link=\"$Config{'link_color'}\"" }

# Check for Visited Link Color
if ($Config{'vlink_color'}) { print " vlink=\"$Config{'vlink_color'}\"" }

# Check for Active Link Color
if ($Config{'alink_color'}) { print " alink=\"$Config{'alink_color'}\"" }

# Check for Body Text Color
if ($Config{'text_color'}) { print " text=\"$Config{'text_color'}\"" }
}

sub error {
# Localize variables and assign subroutine input. #
local($error,@error_fields) = @_;
local($host,$missing_field,$missing_field_list);

if ($error eq 'request_method') {
print <<"(END ERROR HTML)";
Content-type: text/html; charset=iso-8859-1

<html>
<head>
<title>Error: Request Method</title>
</head>
<body bgcolor=#FFFFFF text=#000000>
<center>
<table border=0 width=600 bgcolor=#9C9C9C>
<tr><th><font size=+2>Error: Request Method</font></th></tr>
</table>
<table border=0 width=600 bgcolor=#CFCFCF>
<tr><td>The Request Method of the Form you submitted did not match
either <tt>GET</tt> or <tt>POST</tt>. Please check the form and make sure the
<tt>method=</tt> statement is in upper case and matches <tt>GET</tt> or <tt>POST</tt>.<p>

<center><font size=-1>
<a href="http://www.worldwidemart.com/scripts/formmail.shtml">FormMail</a> &copy; Matt Wright<br>
A Free Product of <a href="http://www.worldwidemart.com/scripts/">Matt's Script Archive, Inc.</a>
</font></center>
</td></tr>
</table>
</center>
</body>
</html>
(END ERROR HTML)
}

elsif ($error eq 'no_recipient') {
print <<"(END ERROR HTML)";
Content-type: text/html; charset=iso-8859-1

<html>
<head>
<title>Error: No Recipient</title>
</head>
<body bgcolor=#FFFFFF text=#000000>
<center>
<table border=0 width=600 bgcolor=#9C9C9C>
<tr><th><font size=+2>Error: No Recipient</font></th></tr>
</table>
<table border=0 width=600 bgcolor=#CFCFCF>
<tr><td>There was no recipient address specified in the data sent to FormMail. Please
make sure you have filled in the <tt>recipient</tt> form field with an e-mail
address that has been configured in
either <tt>\@recipient_addresses</tt>
or in <tt>\@recipient_domains</tt>.
More information on filling in <tt>recipient</tt> form fields
and variables can be
found in the README file.<hr size=1>

<center><font size=-1>
<a href="http://www.worldwidemart.com/scripts/formmail.shtml">FormMail</a> &copy; Matt Wright<br>
A Free Product of <a href="http://www.worldwidemart.com/scripts/">Matt's Script Archive, Inc.</a>
</font></center>
</td></tr>
</table>
</center>
</body>
</html>
(END ERROR HTML)
}

elsif ($error eq 'invalid_recipient') {
print <<"(END ERROR HTML)";
Content-type: text/html; charset=iso-8859-1

<html>
<head>
<title>Error: Invalid Recipient</title>
</head>
<body bgcolor=#FFFFFF text=#000000>
<center>
<table border=0 width=600 bgcolor=#9C9C9C>
<tr><th><font size=+2>Error: Invalid Recipient</font></th></tr>
</table>
<table border=0 width=600 bgcolor=#CFCFCF>
<tr><td>There was an invalid recipient address specified in the data sent to FormMail. Please
make sure you have filled in the <tt>recipient</tt> form field with an e-mail
address that has been configured in
either <tt>\@recipient_addressess</tt>
or else in <tt>\@recipient_domains</tt>.
More information on filling in <tt>recipient</tt> form fields and
variables can be
found in the README file.<hr size=1>

<center><font size=-1>
<a href="http://www.worldwidemart.com/scripts/formmail.shtml">FormMail</a> &copy; Matt Wright<br>
A Free Product of <a href="http://www.worldwidemart.com/scripts/">Matt's Script Archive, Inc.</a>
</font></center>
</td></tr>
</table>
</center>
</body>
</html>
(END ERROR HTML)
}

elsif ($error eq 'invalid_config_addr') {
print <<"(END ERROR HTML)";
Content-type: text/html; charset=iso-8859-1

<html>
<head>
<title>Error: Invalid Configured Recipient Address</title>
</head>
<body bgcolor=#FFFFFF text=#000000>
<center>
<table border=0 width=600 bgcolor=#9C9C9C>
<tr><th><font size=+2>Error: Invalid Configured Recipient Address</font></th></tr>
</table>
<table border=0 width=600 bgcolor=#CFCFCF>
<tr><td>There was an invalid recipient address specified in the
recipient_addresses configuration variable of FormMail. Please
contact the FormMail installer and report this error.
More information on installing and configuring FormMail can be
found in the README file.<hr size=1>

<center><font size=-1>
<a href="http://www.worldwidemart.com/scripts/formmail.shtml">FormMail</a> &copy; Matt Wright<br>
A Free Product of <a href="http://www.worldwidemart.com/scripts/">Matt's Script Archive, Inc.</a>
</font></center>
</td></tr>
</table>
</center>
</body>
</html>
(END ERROR HTML)
}

elsif ($error eq 'invalid_config_domain') {
print <<"(END ERROR HTML)";
Content-type: text/html; charset=iso-8859-1

<html>
<head>
<title>Error: Invalid Configured Recipient Domain</title>
</head>
<body bgcolor=#FFFFFF text=#000000>
<center>
<table border=0 width=600 bgcolor=#9C9C9C>
<tr><th><font size=+2>Error: Invalid Configured Recipient Domain</font></th></tr>
</table>
<table border=0 width=600 bgcolor=#CFCFCF>
<tr><td>There was an invalid recipient domain specified in the
recipient_domains configuration variable of FormMail. Please
contact the FormMail installer and report this error.
More information on installing and configuring FormMail can be
found in the README file.<hr size=1>

<center><font size=-1>
<a href="http://www.worldwidemart.com/scripts/formmail.shtml">FormMail</a> &copy; Matt Wright<br>
A Free Product of <a href="http://www.worldwidemart.com/scripts/">Matt's Script Archive, Inc.</a>
</font></center>
</td></tr>
</table>
</center>
</body>
</html>
(END ERROR HTML)
}

elsif ($error eq 'missing_fields') {
if ($Config{'missing_fields_redirect'}) {
print "Location: $Config{'missing_fields_redirect'}\n\n";
}
}
elsif ($error eq 'captcha_failed') {
print <<"(END ERROR HTML)";
Content-type: text/html

<html>
<head>
<title>Error: Captcha Check Failed</title>
</head>
<body bgcolor=#FFFFFF text=#000000>
<center>
<table border=0 width=600 bgcolor=#9C9C9C>
<tr><th><font size=+2>Error: Captcha Check Failed</font></th></tr%gt;
</table>
<table border=0 width=600 bgcolor=#CFCFCF>
<tr><td>The Captcha response of the form you submitted did not match the challenge.
Please check the form and make sure that your response matches the challenge in the captcha image.
You can use the browser back button to return to the form.
</center%gt;
</td></tr>
</table>
</center>
</body>
</html>
(END ERROR HTML)
}

else {
foreach $missing_field (@error_fields) {
$missing_field_list .= " <li>$missing_field\n";
}

print <<"(END ERROR HTML)";
Content-type: text/html; charset=iso-8859-1

<html>
<head>
<title>Error: Blank Fields</title>
</head>
<center>
<table border=0 width=600 bgcolor=#9C9C9C>
<tr><th><font size=+2>Error: Blank Fields</font></th></tr>
</table>
<table border=0 width=600 bgcolor=#CFCFCF>
<tr><td>The following fields were left blank in your submission form:<p>
<ul>
$missing_field_list
</ul><br>

These fields must be filled in before you can successfully submit the form.<p>
Please use your browser's back button to return to the form and try again.<hr size=1>
<center><font size=-1>
<a href="http://www.worldwidemart.com/scripts/formmail.shtml">FormMail</a> &copy; Matt Wright<br>
A Free Product of <a href="http://www.worldwidemart.com/scripts/">Matt's Script Archive, Inc.</a>
</font></center>
</td></tr>
</table>
</center>
</body>
</html>
(END ERROR HTML)
}
exit (0);
}
 
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