--- lib/PXElator/dhcpd.pm	2009/08/10 17:30:01	194
+++ lib/PXElator/dhcpd.pm	2010/01/23 18:31:14	482
@@ -23,6 +23,9 @@
 use Net::DHCP::Packet;
 use Net::DHCP::Constants 0.67;
 
+use store;
+use format;
+
 use server;
 my $debug = server::debug;
 
@@ -36,8 +39,13 @@
 
 use client;
 
-sub client_ip {
-	my ( $mac ) = @_;
+sub client_mac_ip {
+	my ( $mac, $request_ip ) = @_;
+
+	if ( ! $mac ) {
+		warn "W: no mac in requiest\n";
+		return;
+	}
 
 	my $conf = $server::conf;
 	mkdir $conf unless -e $conf;
@@ -46,23 +54,17 @@
 
 	if ( $ip = client::ip_from_mac( $mac ) ) {
 		print "RENEW $mac $ip\n";
+		client::save_ip_mac( $ip, $mac );
 		return $ip;
-	} else {
-		$ip = client::next_ip;
+	} elsif ( ip::in_dhcp_range( $request_ip ) || $request_ip eq '0.0.0.0' ) {
+		$ip = client::next_ip( $mac );
 		print "NEW $mac $ip\n";
-		symlink "$conf/ip/$ip", "$conf/mac/$mac";
+	} else {
+		$ip = $request_ip;
+		client::save_ip_mac( $ip, $mac );
+		warn "W: $ip out of server range $server::ip/$server::netmask\n";
 	}
 
-	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";
-
 	return $ip;
 }
 
@@ -77,8 +79,6 @@
 sub process_packet {
 	my $sock = shift;
 
-	server->refresh;
-
 	my $buf;
 	$sock->recv($buf, 1024);
 	my $size = 'empty';
@@ -88,12 +88,24 @@
 	return unless $buf;
 
 	my $dhcp = Net::DHCP::Packet->new($buf);
-	$dhcp->comment( $transaction++ );
 
 	warn "recv: ", $dhcp->toString if $debug;
 
-	my $mac = substr($dhcp->chaddr(),0,$dhcp->hlen()*2);
-	my $ip = client_ip($mac);
+	$dhcp->comment( $transaction++ );
+
+	my $mac = format::mac( substr($dhcp->chaddr(),0,$dhcp->hlen()*2) );
+	my $ip = client_mac_ip($mac, $dhcp->ciaddr);
+
+	my $hostname = $dhcp->getOptionValue(DHO_HOST_NAME);
+	print "$ip ", client::conf( $ip => 'hostname', default => $hostname ), " >> /etc/hosts\n" if $hostname;
+
+	my $audit = { mac => $mac, ip => $ip, hostname => $hostname,
+		options => {
+			map {
+				( $_ => $dhcp->getOptionValue( $_ ) )
+			} @{ $dhcp->{options_order} }
+		},
+	};
 
 =for later
 
@@ -109,6 +121,8 @@
 
 	config::for_ip( $ip );
 
+	my $server = server::as_hash_for $ip;
+
 	my $packet = {
 		Op		=> BOOTREPLY(),
 		Hops	=> $dhcp->hops(),
@@ -116,21 +130,21 @@
 		Flags	=> $dhcp->flags(),
 		Ciaddr	=> $dhcp->ciaddr(),
 		Yiaddr	=> $ip,
-		Siaddr	=> $server::ip,
+		Siaddr	=> $server->{ip},
 		Giaddr	=> $dhcp->giaddr(),
 		Chaddr	=> $dhcp->chaddr(),
 		File	=> $file,
-		DHO_DHCP_SERVER_IDENTIFIER()	=> $server::ip,	# busybox/udhcpc needs it but doesn't request
+		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_SUBNET_MASK()	=> $server->{netmask},
+		DHO_ROUTERS()		=> ( $server->{gw} || $server->{ip} ),
+		DHO_DOMAIN_NAME()	=> $server->{domain},
+		DHO_NAME_SERVERS()	=> $server->{ip},
+		DHO_DOMAIN_NAME_SERVERS() => ( $server->{dns} || $server->{ip} ),
 		DHO_HOST_NAME()		=> client::conf( $ip, 'hostname' ),
-		DHO_BROADCAST_ADDRESS() => $server::bcast,
+		DHO_BROADCAST_ADDRESS() => $server->{bcast},
 #		DHO_NTP_SERVERS() => '',
 	};
 
@@ -147,6 +161,8 @@
 	}
 
 	warn "W: options requested but missing: ",dump( @missing ),$/;
+	$audit->{requested} = [ @requested ];
+	$audit->{missing}   = [ @missing   ];
 
 	foreach my $opt ( 'magic', 'config_file', 'path_prefix', 'reboot_time' ) {
 		my $DH0 = eval 'DHO_PXELINUX_' . uc $opt;
@@ -160,44 +176,61 @@
 
 	my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE());
 
+	my @type;
+
 	if ($messagetype eq DHCPDISCOVER()) {
-		log::mac $mac, "DHCP DISCOVER";
 		$packet->{Comment} = $dhcp->comment();
 		$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPOFFER();
+		@type = qw( discover offer );
 	} elsif ($messagetype eq DHCPREQUEST()) {
-		my $requested_ip = $dhcp->getOptionValue(DHO_DHCP_REQUESTED_ADDRESS());
-		log::mac $mac, "DHCP REQUEST $requested_ip $ip $file";
+		@type = qw( request );
+		my $requested_ip = $dhcp->getOptionValue(DHO_DHCP_REQUESTED_ADDRESS()) || $dhcp->ciaddr();
 		if ( $ip eq $requested_ip ) {
 			$packet->{DHO_DHCP_MESSAGE_TYPE()}      = DHCPACK();
 			$packet->{DHO_DHCP_LEASE_TIME()}        = 5 * 60; # 5 min
 #			$packet->{DHO_ROOT_PATH()}              = '/exports/foobar';
+			$type[1] = 'ack';
 		} else {
 			$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK();
-			$packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip";
+			$packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip got $requested_ip";
+			$type[1] = 'nak';
 		}
 	} elsif ($messagetype eq DHCPINFORM()) {
-		log::mac $mac, "DHCP INFORM ignored";
+		@type = qw( inform ignored );
 	} else {
-		log::mac $mac, "$messagetype igored (bootp?)";
+		@type = ( $messagetype, 'ignored' );
 	}
 
-	warn ">> $mac == $ip server: $server::ip", $file ? " file: $file\n" : "\n" if $debug;
+	warn "# type ",dump @type;
+	$audit->{type} = [ @type ];
+
+	$audit->{response} = $packet;
 
 	$packet = new Net::DHCP::Packet( %$packet );
 	warn "send ",$packet->toString() if $debug;
 
-	my $reply = IO::Socket::INET->new(
-		LocalAddr => $server::ip,
-		LocalPort => 67,
-		Proto => "udp",
-		Broadcast => 1,
-		PeerAddr => '255.255.255.255',
-		PeerPort => 68,
-		Reuse => 1,
-	) or die "socket: $@";
+	if ( ip::in_dhcp_range( $ip ) ) {
+		my $buff = $packet->serialize();
+
+		my $reply = IO::Socket::INET->new(
+			LocalAddr => $server->{ip},
+			LocalPort => 67,
+			Proto => "udp",
+			Broadcast => 1,
+#			PeerAddr => '255.255.255.255',
+			PeerAddr => $server->{bcast},
+			PeerPort => 68,
+			Reuse => 1,
+		) or die "socket: $@";
+
+		$reply->send( $buff, 0 ) or die "Error sending: $!\n";
+		warn ">> $mac == $ip server: $server->{ip}", $file ? " file: $file\n" : "\n";
+	} else {
+		$audit->{error} = "$ip not in server range $server::ip $server::netmask - no packet sent";
+		warn $audit->{error};
+	}
 
-	my $buff = $packet->serialize();
-	$reply->send( $buff, 0 ) or die "Error sending: $!\n";
+	store::audit( @type, $audit );
 
 #	system("arp -s $ip $mac"),
 
@@ -219,7 +252,10 @@
 
 	print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n";
 
+	store::audit( 'start', { addr => $sock->sockhost, port => $sock->sockport } );
+
 	while (1) {
+		server->refresh;
 		process_packet $sock;
 	}
 }