--- lib/PXElator/dhcpd.pm	2009/07/30 00:07:57	48
+++ lib/PXElator/dhcpd.pm	2009/08/06 20:14:43	167
@@ -19,16 +19,13 @@
 use File::Slurp;
 use Data::Dump qw/dump/;
 use Net::Ping;
-use Module::Refresh;
 
 use lib '..';
 use Net::DHCP::Packet;
 use Net::DHCP::Constants 0.67;
 
 use server;
-use pxe;
-
-my $debug = 1;
+my $debug = server::debug;
 
 if ( ! $server::ip ) {
 	my $server_ip = `/sbin/ifconfig`;
@@ -36,63 +33,74 @@
 	$server::ip = $server_ip;
 }
 
-warn "server ip $server::ip file: $pxe::file range: $server::ip_from - $server::ip_to\n";
+warn "server ip $server::ip range: $server::ip_from - $server::ip_to\n";
 
 my $addr = $server::ip_from;
 
 sub client_ip {
 	my ( $mac ) = @_;
 
-	my $conf = "conf/$server::ip";
+	my $conf = $server::conf;
 	mkdir $conf unless -e $conf;
 
 	if ( -e "$conf/mac/$mac" ) {
 		my $ip = read_file "$conf/mac/$mac";
-		print "$mac old $ip\n";
+		print "RENEW $mac $ip\n";
 		return $ip;
 	}
 
-	mkdir $_ foreach grep { ! -e $_ } map { "$conf/$_" } ( 'ip', 'mac' );
-
 	my $p = Net::Ping->new;
 
 	my $prefix = $server::ip;
 	$prefix =~ s{\.\d+$}{.};
 	my $ip = $prefix . $addr;
-	while ( -e "conf/ip/$ip" || $p->ping( $ip ) ) {
+
+	while ( -e "$conf/ip/$ip" || $p->ping( $ip ) ) {
 		$ip = $prefix . $addr++;
 		die "all addresses allocated!" if $addr == $server::ip_to;
 	}
 
 	write_file "$conf/mac/$mac", $ip;
-	if ( -l "$conf/ip/$ip" && readlink "$conf/ip/$ip" ne "$conf/mac/$mac") {
-		unlink     "$conf/ip/$ip";
-		symlink    "$conf/mac/$mac", "$conf/ip/$ip";
-		warn "$mac IP changed to $ip";
-	}
+
+	my $ip_path = "$conf/ip/$ip";
+	mkdir $ip_path unless -e $ip_path;
+
+	if ( -l "$ip_path/mac" && readlink "$ip_path/mac" ne "$conf/mac/$mac" ) {
+		warn "$mac IP changed from ", readlink "$ip_path/mac", " to $ip";
+		unlink "$ip_path/mac";
+	};
+	symlink "$conf/mac/$mac", "$ip_path/mac";
 
 	print "$mac NEW $ip\n";
 
 	return $ip;
 }
 
+use log;
+use config;
+use pxelinux;
+use client;
+
+our $file;
 our $transaction = 0; # FIXME predictible transaction numbers
 
 sub process_packet {
 	my $sock = shift;
 
+	server->refresh;
+
 	my $buf;
 	$sock->recv($buf, 1024);
 	my $size = 'empty';
 	$size = length($buf) . ' bytes' if defined $buf;
 
-	print "packet from ",$sock->peerhost,":",$sock->peerport," $size\n";
+	print "packet from ",$sock->peerhost,":",$sock->peerport," $size\n" if $debug;
 	return unless $buf;
 
 	my $dhcp = Net::DHCP::Packet->new($buf);
 	$dhcp->comment( $transaction++ );
 
-	warn "recv: ", $dhcp->toString;
+	warn "recv: ", $dhcp->toString if $debug;
 
 	my $mac = substr($dhcp->chaddr(),0,$dhcp->hlen()*2);
 	my $ip = client_ip($mac);
@@ -109,6 +117,8 @@
 
 =cut
 
+	config::for_ip( $ip );
+
 	my $packet = {
 		Op		=> BOOTREPLY(),
 		Hops	=> $dhcp->hops(),
@@ -119,41 +129,72 @@
 		Siaddr	=> $server::ip,
 		Giaddr	=> $dhcp->giaddr(),
 		Chaddr	=> $dhcp->chaddr(),
-		File	=> $pxe::file,
+		File	=> $file,
+		DHO_DHCP_SERVER_IDENTIFIER()	=> $server::ip,	# busybox/udhcpc needs it but doesn't request
 	};
 
+	my $options = {
+		DHO_SUBNET_MASK()	=> $server::netmask,
+		DHO_ROUTERS()		=> $server::ip,
+		DHO_DOMAIN_NAME()	=> $server::domain_name,
+		DHO_NAME_SERVERS()	=> $server::ip,
+		DHO_DOMAIN_NAME_SERVERS() => $server::ip,
+		DHO_HOST_NAME()		=> client::conf( $ip, 'hostname' ),
+		DHO_BROADCAST_ADDRESS() => $server::bcast,
+#		DHO_NTP_SERVERS() => '',
+	};
+
+	my @requested = split(/\s/, $dhcp->getOptionValue(DHO_DHCP_PARAMETER_REQUEST_LIST));
+	warn "options ",dump( $options ), ' requested: ',dump( @requested ) if $debug;
+
+	my @missing;
+	foreach ( @requested ) {
+		if ( defined $options->{$_} ) {
+			$packet->{$_} = $options->{$_};
+		} else {
+			push @missing, $_;
+		}
+	}
+
+	warn "W: options requested but missing: ",dump( @missing );
+
+	foreach my $opt ( 'magic', 'config_file', 'path_prefix', 'reboot_time' ) {
+		my $DH0 = eval 'DHO_PXELINUX_' . uc $opt;
+		warn "DH0: $@" if $@;
+		my $v = eval "\$pxelinux::$opt";
+		warn "v: $@" if $@;
+		next unless defined $v;
+		warn "pxelinux dhcp option $opt = $DH0 = $v\n" if $debug;
+		$packet->{ $DH0 } = $v;
+	}
+
 	my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE());
 
 	if ($messagetype eq DHCPDISCOVER()) {
-		warn "DHCP DISCOVER";
+		log::mac $mac, "DHCP DISCOVER";
 		$packet->{Comment} = $dhcp->comment();
 		$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPOFFER();
 	} elsif ($messagetype eq DHCPREQUEST()) {
 		my $requested_ip = $dhcp->getOptionValue(DHO_DHCP_REQUESTED_ADDRESS());
-		warn "DHCP REQUEST $requested_ip";
+		log::mac $mac, "DHCP REQUEST $requested_ip $ip $file";
 		if ( $ip eq $requested_ip ) {
 			$packet->{DHO_DHCP_MESSAGE_TYPE()}      = DHCPACK();
 			$packet->{DHO_DHCP_LEASE_TIME()}        = 5 * 60; # 5 min
-#			$packet->{DHO_DHCP_SERVER_IDENTIFIER()} = $server::ip;		# FIXME
-			$packet->{DHO_SUBNET_MASK()}            = '255.255.255.0';
-			$packet->{DHO_ROUTERS()}                = $server::ip;
-#			$packet->{DHO_DOMAIN_NAME()}            = 'pxelator.lan';
-#			$packet->{DHO_NAME_SERVERS()}           = $server::ip;
 #			$packet->{DHO_ROOT_PATH()}              = '/exports/foobar';
 		} else {
 			$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK();
 			$packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip";
 		}
 	} elsif ($messagetype eq DHCPINFORM()) {
-		warn "DHCP INFORM ignored";
+		log::mac $mac, "DHCP INFORM ignored";
 	} else {
-		warn "$messagetype igored (bootp?)";
+		log::mac $mac, "$messagetype igored (bootp?)";
 	}
 
-	warn ">> $mac == $ip server: $server::ip", $pxe::file ? " pxe file: $pxe::file\n" : "\n";
+	warn ">> $mac == $ip server: $server::ip", $file ? " file: $file\n" : "\n" if $debug;
 
 	$packet = new Net::DHCP::Packet( %$packet );
-	warn "## ",$packet->toString(),"\n" if $debug;
+	warn "send ",$packet->toString() if $debug;
 
 	my $reply = IO::Socket::INET->new(
 		LocalAddr => $server::ip,
@@ -189,7 +230,6 @@
 	print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n";
 
 	while (1) {
-		Module::Refresh->refresh;
 		process_packet $sock;
 	}
 }