18 |
use IO::Socket::INET; |
use IO::Socket::INET; |
19 |
use File::Slurp; |
use File::Slurp; |
20 |
use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
|
use Net::Ping; |
|
|
use Module::Refresh; |
|
21 |
|
|
22 |
use lib '..'; |
use lib '..'; |
23 |
use Net::DHCP::Packet; |
use Net::DHCP::Packet; |
25 |
|
|
26 |
use server; |
use server; |
27 |
my $debug = server::debug; |
my $debug = server::debug; |
|
use pxe; |
|
28 |
|
|
29 |
if ( ! $server::ip ) { |
if ( ! $server::ip ) { |
30 |
my $server_ip = `/sbin/ifconfig`; |
my $server_ip = `/sbin/ifconfig`; |
32 |
$server::ip = $server_ip; |
$server::ip = $server_ip; |
33 |
} |
} |
34 |
|
|
35 |
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"; |
36 |
|
|
37 |
my $addr = $server::ip_from; |
use client; |
38 |
|
|
39 |
sub client_ip { |
sub client_ip { |
40 |
my ( $mac ) = @_; |
my ( $mac ) = @_; |
41 |
|
|
42 |
my $conf = "conf/$server::ip"; |
my $conf = $server::conf; |
43 |
mkdir $conf unless -e $conf; |
mkdir $conf unless -e $conf; |
44 |
|
|
45 |
if ( -e "$conf/mac/$mac" ) { |
my $ip; |
|
my $ip = read_file "$conf/mac/$mac"; |
|
|
print "$mac old $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 ) ) { |
|
|
$ip = $prefix . $addr++; |
|
|
die "all addresses allocated!" if $addr == $server::ip_to; |
|
|
} |
|
46 |
|
|
47 |
write_file "$conf/mac/$mac", $ip; |
if ( $ip = client::ip_from_mac( $mac ) ) { |
48 |
if ( -l "$conf/ip/$ip" && readlink "$conf/ip/$ip" ne "$conf/mac/$mac") { |
print "RENEW $mac $ip\n"; |
49 |
unlink "$conf/ip/$ip"; |
return $ip; |
50 |
symlink "$conf/mac/$mac", "$conf/ip/$ip"; |
} else { |
51 |
warn "$mac IP changed to $ip"; |
$ip = client::next_ip( $mac ); |
52 |
|
print "NEW $mac $ip\n"; |
53 |
} |
} |
54 |
|
|
|
print "$mac NEW $ip\n"; |
|
|
|
|
55 |
return $ip; |
return $ip; |
56 |
} |
} |
57 |
|
|
58 |
|
use log; |
59 |
|
use config; |
60 |
|
use pxelinux; |
61 |
|
use client; |
62 |
|
|
63 |
|
our $file; |
64 |
our $transaction = 0; # FIXME predictible transaction numbers |
our $transaction = 0; # FIXME predictible transaction numbers |
65 |
|
|
66 |
sub process_packet { |
sub process_packet { |
67 |
my $sock = shift; |
my $sock = shift; |
68 |
|
|
69 |
|
server->refresh; |
70 |
|
|
71 |
my $buf; |
my $buf; |
72 |
$sock->recv($buf, 1024); |
$sock->recv($buf, 1024); |
73 |
my $size = 'empty'; |
my $size = 'empty'; |
74 |
$size = length($buf) . ' bytes' if defined $buf; |
$size = length($buf) . ' bytes' if defined $buf; |
75 |
|
|
76 |
print "packet from ",$sock->peerhost,":",$sock->peerport," $size\n"; |
print "packet from ",$sock->peerhost,":",$sock->peerport," $size\n" if $debug; |
77 |
return unless $buf; |
return unless $buf; |
78 |
|
|
79 |
my $dhcp = Net::DHCP::Packet->new($buf); |
my $dhcp = Net::DHCP::Packet->new($buf); |
96 |
|
|
97 |
=cut |
=cut |
98 |
|
|
99 |
|
config::for_ip( $ip ); |
100 |
|
|
101 |
my $packet = { |
my $packet = { |
102 |
Op => BOOTREPLY(), |
Op => BOOTREPLY(), |
103 |
Hops => $dhcp->hops(), |
Hops => $dhcp->hops(), |
108 |
Siaddr => $server::ip, |
Siaddr => $server::ip, |
109 |
Giaddr => $dhcp->giaddr(), |
Giaddr => $dhcp->giaddr(), |
110 |
Chaddr => $dhcp->chaddr(), |
Chaddr => $dhcp->chaddr(), |
111 |
File => $pxe::file, |
File => $file, |
112 |
|
DHO_DHCP_SERVER_IDENTIFIER() => $server::ip, # busybox/udhcpc needs it but doesn't request |
113 |
|
}; |
114 |
|
|
115 |
|
my $options = { |
116 |
|
DHO_SUBNET_MASK() => $server::netmask, |
117 |
|
DHO_ROUTERS() => $server::ip, |
118 |
|
DHO_DOMAIN_NAME() => $server::domain_name, |
119 |
|
DHO_NAME_SERVERS() => $server::ip, |
120 |
|
DHO_DOMAIN_NAME_SERVERS() => $server::ip, |
121 |
|
DHO_HOST_NAME() => client::conf( $ip, 'hostname' ), |
122 |
|
DHO_BROADCAST_ADDRESS() => $server::bcast, |
123 |
|
# DHO_NTP_SERVERS() => '', |
124 |
}; |
}; |
125 |
|
|
126 |
pxe::config_for_ip( $ip ); |
my @requested = split(/\s/, $dhcp->getOptionValue(DHO_DHCP_PARAMETER_REQUEST_LIST)); |
127 |
|
warn "options ",dump( $options ), ' requested: ',dump( @requested ) if $debug; |
128 |
|
|
129 |
|
my @missing; |
130 |
|
foreach ( @requested ) { |
131 |
|
if ( defined $options->{$_} ) { |
132 |
|
$packet->{$_} = $options->{$_}; |
133 |
|
} else { |
134 |
|
push @missing, $_; |
135 |
|
} |
136 |
|
} |
137 |
|
|
138 |
|
warn "W: options requested but missing: ",dump( @missing ),$/; |
139 |
|
|
140 |
|
foreach my $opt ( 'magic', 'config_file', 'path_prefix', 'reboot_time' ) { |
141 |
|
my $DH0 = eval 'DHO_PXELINUX_' . uc $opt; |
142 |
|
warn "DH0: $@" if $@; |
143 |
|
my $v = eval "\$pxelinux::$opt"; |
144 |
|
warn "v: $@" if $@; |
145 |
|
next unless defined $v; |
146 |
|
warn "pxelinux dhcp option $opt = $DH0 = $v\n" if $debug; |
147 |
|
$packet->{ $DH0 } = $v; |
148 |
|
} |
149 |
|
|
150 |
my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
151 |
|
|
152 |
if ($messagetype eq DHCPDISCOVER()) { |
if ($messagetype eq DHCPDISCOVER()) { |
153 |
warn "DHCP DISCOVER"; |
log::mac $mac, "DHCP DISCOVER"; |
154 |
$packet->{Comment} = $dhcp->comment(); |
$packet->{Comment} = $dhcp->comment(); |
155 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPOFFER(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPOFFER(); |
156 |
} elsif ($messagetype eq DHCPREQUEST()) { |
} elsif ($messagetype eq DHCPREQUEST()) { |
157 |
my $requested_ip = $dhcp->getOptionValue(DHO_DHCP_REQUESTED_ADDRESS()); |
my $requested_ip = $dhcp->getOptionValue(DHO_DHCP_REQUESTED_ADDRESS()); |
158 |
warn "DHCP REQUEST $requested_ip"; |
log::mac $mac, "DHCP REQUEST $requested_ip $ip $file"; |
159 |
if ( $ip eq $requested_ip ) { |
if ( $ip eq $requested_ip ) { |
160 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK(); |
161 |
$packet->{DHO_DHCP_LEASE_TIME()} = 5 * 60; # 5 min |
$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; |
|
162 |
# $packet->{DHO_ROOT_PATH()} = '/exports/foobar'; |
# $packet->{DHO_ROOT_PATH()} = '/exports/foobar'; |
163 |
} else { |
} else { |
164 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK(); |
165 |
$packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip"; |
$packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip"; |
166 |
} |
} |
167 |
} elsif ($messagetype eq DHCPINFORM()) { |
} elsif ($messagetype eq DHCPINFORM()) { |
168 |
warn "DHCP INFORM ignored"; |
log::mac $mac, "DHCP INFORM ignored"; |
169 |
} else { |
} else { |
170 |
warn "$messagetype igored (bootp?)"; |
log::mac $mac, "$messagetype igored (bootp?)"; |
171 |
} |
} |
172 |
|
|
173 |
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; |
174 |
|
|
175 |
$packet = new Net::DHCP::Packet( %$packet ); |
$packet = new Net::DHCP::Packet( %$packet ); |
176 |
warn "send ",$packet->toString() if $debug; |
warn "send ",$packet->toString() if $debug; |
209 |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
210 |
|
|
211 |
while (1) { |
while (1) { |
|
Module::Refresh->refresh; |
|
212 |
process_packet $sock; |
process_packet $sock; |
213 |
} |
} |
214 |
} |
} |