#!/usr/local/bin/perl 

# ======================================================================
# soho.pl  -   order form information 
#
# Original code by
# Carlos A. Pero (cpero@ncsa.uiuc.edu)
#
# Adapted as a generic forms handler by 
# Marco Falcioni falcioni@npac.syr.edu)  Aug 1995 and
# Paul Coddington (paulc@npac.syr.edu) Sep 1995
#
# ======================================================================



########################################################################
########## Configurable variables ######################################

$SENDMAIL = '/usr/lib/sendmail';
#                                   The location of your sendmail binary

## Also, make sure the first line of this script points
## to your PERL binary

$SUBJECT = "Form Information";
$FROM_EMAIL = "Infomall Web Server";
$FROM_NAME = "Web Form";

########## Nothing else to change ######################################
########################################################################


$SCRIPT = $ENV{'SCRIPT_NAME'};

#### Do standard HTTP stuff ####
&cgi_receive;
&cgi_decode;
&cgi_header;

#### Output email form unless you are receiving FORM input already ####
&print_form unless keys %FORM;

#### Make sure required fields are filled out ####
#if ($FORM{'nickname'}) {
#    #### This section is for receiving from this form ####
#    &error_blank_field('your name')  unless ($FORM{'from-name'});
#    &error_blank_field('your email address in the form of <I>name@domain</I>') unless ($FORM{'from-email'} =~ /\@/);
#   &error_blank_field('the subject of the message') unless ($FORM{'subject'});
#    &error_blank_field('your message') unless ($FORM{'message'});
#}
#else {
#    #### This section is for user's forms ####
#    #### Such as ACTION="/cgi-bin/mail?carlos" to have results forwarded ####
#    $FORM{'nickname'} = $ENV{'QUERY_STRING'};
#}

#### Lookup email address based on 'nickname' ####
open (MAILNAMES, "mail.list") || die ("$SCRIPT: Can't open mail.list: $!\n");
while (<MAILNAMES>) {
    chop;
    ($nick, $addr) = split(/:/, $_);
    $ADDRESS{$nick} = $addr;
}
close (MAILNAMES);
&error_blank_field('the nickname of the recipient') unless ($ADDRESS{$FORM{'nickname'}});

#### Make sure all necessary variables for email message are filled in
($FORM{'subject'}) || ($FORM{'subject'} = $SUBJECT);
($FORM{'from-email'}) || ($FORM{'from-email'} = $FROM_EMAIL);
($FORM{'from-name'}) || ($FORM{'from-name'} = $FROM_NAME);

open (MAIL, "| $SENDMAIL $ADDRESS{$FORM{'nickname'}}") || die ("$SCRIPT: Can't open $mailprog: $!\n");
print MAIL "From: $FORM{'from-email'}\n";
print MAIL "To: $ADDRESS{$FORM{'nickname'}}\n";
print MAIL "Subject: $FORM{'subject'}\n";
print MAIL "\n";

&dump_values(FORM, MAIL);

print MAIL "\n";
close (MAIL);

#### Now, redirect if "next-url" is included
if ($FORM{'next-url'}) {
    print "Location: $FORM{'next-url'}\n";
    print "\n";
    exit;
}

#### Output confirmation message ####
print qq|<HTML><HEAD><TITLE>Message Sent</TITLE></HEAD><BODY>\n|;
print qq|<H1>Message Sent</H1><HR>\n|;
print qq|The following message has been sent:\n|;
print "<PRE>\n";
print "Reply-to: $FORM{'from-email'} ($FORM{'from-name'})\n";
print "From: $FORM{'from-email'} ($FORM{'from-name'})\n";
print "To: $ADDRESS{$FORM{'nickname'}}\n";
print "Subject: $FORM{'subject'}\n";
print "\n";
    &dump_values(FORM, STDOUT);
print "\n";
print "</PRE>\n";
print "</BODY>\n";
exit;

#####################################################################
#### SUBROUTINES ####################################################

sub error_blank_field {
    local($variable) = @_;
    print "\n" if ($FORM{'next-url'});
    print "<HTML><HEAD><TITLE>Server-Email Error</TITLE></HEAD><BODY>\n";
    print "<H1>Error!</H1>\n";
    print "You did not fill in $variable.\n";
    print "Please go back to the form and do so.\n";
    print "</BODY>\n";
    exit;
}

sub cgi_header {
    print "Content-type: text/html\n";
    print "\n" unless ($FORM{'next-url'});
}        

sub cgi_receive {
    if ($ENV{'REQUEST_METHOD'} eq "POST") {
        read(STDIN, $incoming, $ENV{'CONTENT_LENGTH'});
    }
    else {
        $incoming = $ENV{'QUERY_STRING'};
    }
}

sub cgi_decode {
    @pairs = split(/&/, $incoming);

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

        $name  =~ tr/+/ /;
        $value =~ tr/+/ /;
        $name  =~ s/%([A-F0-9][A-F0-9])/pack("C", hex($1))/gie;
        $value =~ s/%([A-F0-9][A-F0-9])/pack("C", hex($1))/gie;

        #### Strip out semicolons unless for special character
        $value =~ s/;/$$/g;
        $value =~ s/&(\S{1,6})$$/&\1;/g;
        $value =~ s/$$/ /g;

        $value =~ s/\|/ /g;
        $value =~ s/^!/ /g; ## Allow exclamation points in sentences

        #### Skip blank text entry fields
        next if ($value eq "");

        #### Check for "assign-dynamic" field names
        #### Mainly for on-the-fly input names, especially checkboxes
        if ($name =~ /^assign-dynamic/) {
            $name = $value;
            $value = "on";
        }

	#### Allow for multiple values of a single name
        $FORM{$name} .= ", " if ($FORM{$name});

        $FORM{$name} .= $value;
    }
}

sub dump_values {
    local($env, $handle) = @_;
    local(%PAIRS);
    local($format);
    local($value);

    %months = (Jan,1,
	       Feb,2,
	       Mar,3,
	       Apr,4,
	       May,5,
	       Jun,6,
	       Jul,7,
	       Aug,8,
	       Sep,9,
	       Oct,10,
	       Nov,11,
	       Dec,12);

    require "ctime.pl";

    ($day,$month,$num,$time,$year)= split(" ",&ctime(time));
    ($hour,$min,$sec)= split(":",$time);
    $year =~ s/19//;
#
# Here I build a unique reference number for the order in question
# it is composed by the year - month - day - hours - mins - sec 
# hence it has a very very small probability of not being unique 
#    
    $refkey = "$year$months{$month}$num$hour$min$sec";

    eval "\@keys = keys \%$env";
    eval "\@values = values \%$env";
    while ($#keys >= 0) {
	$key = pop(@keys);
	$value = pop(@values);
	$PAIRS{$key}=$value;
    }
    ($handle eq "STDOUT") && (print $handle "<PRE>\n");

    print $handle "Customer Order","\n";
    print $handle "-" x 70,"\n";
    print $handle "Reference Key: ",$refkey,"\n";
    print $handle "-" x 70,"\n";
    $format = "%s: %s\n";
    foreach( sort keys(%PAIRS)){
	$value = $PAIRS{$_};
	if(/^[A,B,C]/){		# print only interesting fields
	    if($value eq "BEGINS"){ # switch to listing format
		$format = "%s: %s ";
		print $handle "-" x 70,"\n";
	    } elsif($value eq "ENDS") {	# switch back to regular format
		$format = "%s: %s\n";
		print $handle "-" x 70,"\n";
	    } else {
		$_ =~ s/^.*-//;	# strip the leading sort info
		printf $handle $format,$_,$value;
		$_ eq "Price" && print $handle "\n"; # ugly workaround
	    }
	}
    }
    ($handle eq "STDOUT") && (print $handle "</PRE>\n");
}

sub print_form {
    #### Assign path_info and query_string if necessary
    #### $path_info = "";

    open (MAILNAMES, "mail.list") || die ("$SCRIPT: Can't open mail.list: $!\n");
    while (<MAILNAMES>) {
	chop;
	($nickname, $address) = split(/:/, $_);
	$ADDRESS{$nickname} = $address;
    }
    close (MAILNAMES);

    print qq|<HTML><HEAD><TITLE>Server-Email Form</TITLE></HEAD><BODY>\n|;
    print qq|<H1><IMG SRC="/icons/email.gif"> WWW Server Email Form</H1>\n|;
    print qq|<FORM METHOD="POST" ACTION="/$SCRIPT$path_info$query_string">\n|;
    print qq|<HR>\n|;
    print qq|<INPUT TYPE="submit" VALUE="Send Email"> to |;


    if ($ADDRESS{$ENV{'QUERY_STRING'}}) {
	print qq|<B>$ENV{'QUERY_STRING'}</B> <I>($ADDRESS{$ENV{'QUERY_STRING'}})</I>\n|;
	print qq|<INPUT TYPE="hidden" NAME="nickname" VALUE="$ENV{'QUERY_STRING'}">\n|;
    }
    else {
	print qq|<SELECT NAME="nickname">\n|;
	print qq|<OPTION>Select name...\n|;
        foreach $nickname (sort keys %ADDRESS) {
	    print qq|<OPTION>$nickname\n|;
        }
        print qq|</SELECT>\n|;
    }


    print qq|<HR>\n|;
    print qq|<PRE>|;
    print qq|    Your Name: <INPUT NAME="from-name" SIZE="30">\n|;
    print qq|Email Address: <INPUT NAME="from-email" SIZE="30">\n|;
    print qq|      Subject: <INPUT NAME="subject" SIZE="40">    <INPUT TYPE="reset" VALUE="Clear Message">\n|;
    print qq|</PRE>\n|;
    print qq|<TEXTAREA NAME="message" ROWS="15" COLS="70"></TEXTAREA>\n|;
    print qq|<INPUT TYPE="hidden" NAME="previous-url" VALUE="$ENV{'HTTP_REFERER'}">\n|;
    print qq|</FORM>\n|;
    print qq|</BODY>\n|;

    exit;
}

