-#!/usr/bin/perl
+package dhcpd;
=head1 dhcpd
use IO::Socket::INET;
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;
-
-my $debug = 1;
+use CouchDB;
-our ( $file, $gpxe_file );
-our ( $ip_from, $ip_to ) = ( 10, 100 );
+use server;
+my $debug = server::debug;
if ( ! $server::ip ) {
my $server_ip = `/sbin/ifconfig`;
$server::ip = $server_ip;
}
-warn "server ip $server::ip\n";
+warn "server ip $server::ip range: $server::ip_from - $server::ip_to\n";
-my $addr = $ip_from;
+use client;
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";
- return $ip;
- }
-
- mkdir $_ foreach grep { ! -e $_ } map { "$conf/$_" } ( 'ip', 'mac' );
+ my $ip;
- my $p = Net::Ping->new;
-
- my $prefix = $server::ip;
- $prefix =~ s{\.\d+$}{.};
- my $ip = $prefix . $addr;
- while ( -e "conf/ip/$ip" || $p->ping( $ip ) ) {
- $ip = $prefix . $addr++;
- die "all addresses allocated!" if $addr == $ip_to;
- }
-
- write_file "$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";
+ if ( $ip = client::ip_from_mac( $mac ) ) {
+ print "RENEW $mac $ip\n";
+ return $ip;
+ } else {
+ $ip = client::next_ip( $mac );
+ print "NEW $mac $ip\n";
}
- print "$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);
+ my $hostname = $dhcp->getOptionValue(DHO_HOST_NAME);
+ print "$ip ", client::conf( $ip => 'hostname', default => $hostname ), " >> /etc/hosts\n";
+
+ my $audit = { mac => $mac, ip => $ip, hostname => $hostname };
+ CouchDB::audit( 'request', $audit );
+
=for later
my $user_class = $dhcp->getOptionValue(DHO_USER_CLASS());
=cut
+ config::for_ip( $ip );
+
my $packet = {
Op => BOOTREPLY(),
Hops => $dhcp->hops(),
Giaddr => $dhcp->giaddr(),
Chaddr => $dhcp->chaddr(),
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, $_;
+ }
+ }
+
+ warn "W: options requested but missing: ",dump( @missing ),$/;
+ $audit->{requested} = [ @requested ];
+ $audit->{missing} = [ @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";
+ $audit->{type} = '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";
+ $audit->{type} = 'request';
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";
+ $audit->{type} = 'inform';
} else {
- warn "$messagetype igored (bootp?)";
+ $audit->{type} = sprintf('ignored %x', $messagetype);
}
- warn ">> $mac == $ip server: $server::ip", $file ? " file: $file\n" : "\n";
+ warn ">> $mac == $ip server: $server::ip", $file ? " file: $file\n" : "\n" if $debug;
+ $audit->{response} = $packet;
$packet = new Net::DHCP::Packet( %$packet );
- warn "## ",$packet->toString(),"\n" if $debug;
+ warn "send ",$packet->toString() if $debug;
+
+ CouchDB::audit( 'response', $audit );
my $reply = IO::Socket::INET->new(
LocalAddr => $server::ip,
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n";
+ CouchDB::audit( 'start', { 'listen' => { addr => $sock->sockhost, port => $sock->sockport } } );
+
while (1) {
- Module::Refresh->refresh;
process_packet $sock;
}
}
+warn "loaded";
+
1;
projects / pxelator / blobdiff