#!/usr/local/bin/perl
eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
    if $running_under_some_shell;
            # this emulates #! processing on NIH machines.
            # (remove #! line above if indigestible)


use strict;
use English;
use Socket;
use LPRng;
use Getopt::Std;
use Sys::Hostname;

my($Printer, $Pc_value, $Debug );
my($pr, $remote, $port, @files, $file, $f, $hostname, $username);
my($cf, $df, $idn, $cfn, @dfn, $fn, $filecount, $i, $v, $SOCK, $sendcf,%Args);
my($options) = "Z:O:";

$| = 1;

$Debug = 0;
Set_Debug($Debug);
getopts( $options . "P:", \%Args );
Setup_LPRng( %Args );

# get the printer name
$Printer = Get_printer_name( %Args );
if( not $Printer ){
	die "missing printer name";
}

print "Printer '$Printer'\n" if $Debug;

$Pc_value = Setup_pc_entry( $Printer );

($pr, $remote, $port ) = Get_remote_pr_host( $Printer, $Pc_value );
print "pr '$pr', remote '$remote', port '$port'\n" if $Debug;

if( !(@files = @ARGV) ){
	$f = "/tmp/lpr$$";
	@files = $f;
	open TEMP, ">$f"  or die "cannot open $f - $!\n";
	while( defined( $i = <> ) ){
		print TEMP $i or die "cannot write $f - $!\n";
	}
	close TEMP or die "cannot close $f - $!\n";
}

print "files " . join(",",@files) . "\n" if $Debug;


$hostname = hostname();
$username = getpwuid($UID);

$cf = "H$hostname\n"
 . "P$pr\n"
 . "L$username\n" ;

foreach $i ( split //, $options ){
	print "option $i\n" if $Debug;
	$v = $Args{$i};
	if( $i ne ":" and $v ){
		print "option $i='$v'\n" if $Debug;
		$cf .= "$i$v\n";
	}
}

$idn = $$ % 100;
$cfn = sprintf( "cfA%03d%s", $idn, $hostname );
print "cfn='$cfn'\n" if $Debug;
$fn = "A";
$filecount = 0;
for( $i = 0; $i < @files; ++$i ){
	$file = $files[$i];
	if( ! -f $file || ! -r _ || ! -s _ ){
		print "not a readable, nonzero length file - $file\n";
	} else {
		$df = sprintf( "df%s%03d%s", $fn, $idn, $hostname );
		$dfn[$i] = $df;
		$cf .= "N$file\n" . "f$df\n" . "U$df\n";
		++$filecount;
		++$fn;
		if( $filecount == 26 ){ $fn = "a"; }
	}
}

if( $filecount > 52 ){
	print STDERR "too many files\n";
	exit 2;
}

if( $filecount == 0 ){
	print "nothing to print\n";
	exit( 1 );
}

if( $Debug ){
	print "cf contents = '$cf'\n";
	print "cf len " . length( $cf ) . "\n";
}

$SOCK = getconnection( $remote, $port );
sendit( $SOCK, sprintf( "\002%s\n", $pr ));;

$sendcf = "\002" . length( $cf ) . " $cfn\n"; 
sendbuffer( $SOCK, $sendcf, $cf );

print "sending files '@files'\n" if $Debug;
for( $i = 0; $i < @files; ++$i ){
	if( $dfn[$i] ){
		sendfile( $SOCK, $dfn[$i], $files[$i] );
	}
}

close ($SOCK) or die "close: $!"; 
exit 0;