19 |
use File::Slurp; |
use File::Slurp; |
20 |
use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
21 |
use Net::Ping; |
use Net::Ping; |
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use Module::Refresh; |
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22 |
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23 |
use lib '..'; |
use lib '..'; |
24 |
use Net::DHCP::Packet; |
use Net::DHCP::Packet; |
25 |
use Net::DHCP::Constants 0.67; |
use Net::DHCP::Constants 0.67; |
26 |
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|
27 |
use server; |
use server; |
28 |
use pxe; |
my $debug = server::debug; |
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my $debug = 1; |
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29 |
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30 |
if ( ! $server::ip ) { |
if ( ! $server::ip ) { |
31 |
my $server_ip = `/sbin/ifconfig`; |
my $server_ip = `/sbin/ifconfig`; |
33 |
$server::ip = $server_ip; |
$server::ip = $server_ip; |
34 |
} |
} |
35 |
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|
36 |
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"; |
37 |
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|
38 |
my $addr = $server::ip_from; |
my $addr = $server::ip_from; |
39 |
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40 |
sub client_ip { |
sub client_ip { |
41 |
my ( $mac ) = @_; |
my ( $mac ) = @_; |
42 |
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43 |
my $conf = "conf/$server::ip"; |
my $conf = "$server::base_dir/conf/$server::ip"; |
44 |
mkdir $conf unless -e $conf; |
mkdir $conf unless -e $conf; |
45 |
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46 |
if ( -e "$conf/mac/$mac" ) { |
if ( -e "$conf/mac/$mac" ) { |
47 |
my $ip = read_file "$conf/mac/$mac"; |
my $ip = read_file "$conf/mac/$mac"; |
48 |
print "$mac old $ip\n"; |
print "RENEW $mac $ip\n"; |
49 |
return $ip; |
return $ip; |
50 |
} |
} |
51 |
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56 |
my $prefix = $server::ip; |
my $prefix = $server::ip; |
57 |
$prefix =~ s{\.\d+$}{.}; |
$prefix =~ s{\.\d+$}{.}; |
58 |
my $ip = $prefix . $addr; |
my $ip = $prefix . $addr; |
59 |
while ( -e "conf/ip/$ip" || $p->ping( $ip ) ) { |
while ( -e "$conf/ip/$ip" || $p->ping( $ip ) ) { |
60 |
$ip = $prefix . $addr++; |
$ip = $prefix . $addr++; |
61 |
die "all addresses allocated!" if $addr == $server::ip_to; |
die "all addresses allocated!" if $addr == $server::ip_to; |
62 |
} |
} |
63 |
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64 |
write_file "$conf/mac/$mac", $ip; |
write_file "$conf/mac/$mac", $ip; |
65 |
if ( -l "$conf/ip/$ip" && readlink "$conf/ip/$ip" ne "$conf/mac/$mac") { |
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66 |
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if ( -l "$conf/ip/$ip" && readlink "$conf/ip/$ip" ne "$conf/mac/$mac" ) { |
67 |
unlink "$conf/ip/$ip"; |
unlink "$conf/ip/$ip"; |
68 |
symlink "$conf/mac/$mac", "$conf/ip/$ip"; |
warn "$mac IP changed from ", readlink "$conf/ip/$ip", " to $ip"; |
69 |
warn "$mac IP changed to $ip"; |
}; |
70 |
} |
symlink "$conf/mac/$mac", "$conf/ip/$ip"; |
71 |
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|
72 |
print "$mac NEW $ip\n"; |
print "$mac NEW $ip\n"; |
73 |
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|
74 |
return $ip; |
return $ip; |
75 |
} |
} |
76 |
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77 |
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use log; |
78 |
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use config; |
79 |
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use pxelinux; |
80 |
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81 |
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our $file; |
82 |
our $transaction = 0; # FIXME predictible transaction numbers |
our $transaction = 0; # FIXME predictible transaction numbers |
83 |
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84 |
sub process_packet { |
sub process_packet { |
85 |
my $sock = shift; |
my $sock = shift; |
86 |
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87 |
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server->refresh; |
88 |
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89 |
my $buf; |
my $buf; |
90 |
$sock->recv($buf, 1024); |
$sock->recv($buf, 1024); |
91 |
my $size = 'empty'; |
my $size = 'empty'; |
92 |
$size = length($buf) . ' bytes' if defined $buf; |
$size = length($buf) . ' bytes' if defined $buf; |
93 |
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|
94 |
print "packet from ",$sock->peerhost,":",$sock->peerport," $size\n"; |
print "packet from ",$sock->peerhost,":",$sock->peerport," $size\n" if $debug; |
95 |
return unless $buf; |
return unless $buf; |
96 |
|
|
97 |
my $dhcp = Net::DHCP::Packet->new($buf); |
my $dhcp = Net::DHCP::Packet->new($buf); |
98 |
$dhcp->comment( $transaction++ ); |
$dhcp->comment( $transaction++ ); |
99 |
|
|
100 |
warn "recv: ", $dhcp->toString; |
warn "recv: ", $dhcp->toString if $debug; |
101 |
|
|
102 |
my $mac = substr($dhcp->chaddr(),0,$dhcp->hlen()*2); |
my $mac = substr($dhcp->chaddr(),0,$dhcp->hlen()*2); |
103 |
my $ip = client_ip($mac); |
my $ip = client_ip($mac); |
114 |
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|
115 |
=cut |
=cut |
116 |
|
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117 |
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config::for_ip( $ip ); |
118 |
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119 |
my $packet = { |
my $packet = { |
120 |
Op => BOOTREPLY(), |
Op => BOOTREPLY(), |
121 |
Hops => $dhcp->hops(), |
Hops => $dhcp->hops(), |
126 |
Siaddr => $server::ip, |
Siaddr => $server::ip, |
127 |
Giaddr => $dhcp->giaddr(), |
Giaddr => $dhcp->giaddr(), |
128 |
Chaddr => $dhcp->chaddr(), |
Chaddr => $dhcp->chaddr(), |
129 |
File => $pxe::file, |
File => $file, |
130 |
}; |
}; |
131 |
|
|
132 |
pxe::config_for_ip( $ip ); |
foreach my $opt ( 'magic', 'config_file', 'path_prefix', 'reboot_time' ) { |
133 |
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my $DH0 = eval 'DHO_PXELINUX_' . uc $opt; |
134 |
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warn "DH0: $@" if $@; |
135 |
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my $v = eval "\$pxelinux::$opt"; |
136 |
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warn "v: $@" if $@; |
137 |
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next unless defined $v; |
138 |
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warn "pxelinux dhcp option $opt = $DH0 = $v"; |
139 |
|
$packet->{ $DH0 } = $v; |
140 |
|
} |
141 |
|
|
142 |
my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
143 |
|
|
144 |
if ($messagetype eq DHCPDISCOVER()) { |
if ($messagetype eq DHCPDISCOVER()) { |
145 |
warn "DHCP DISCOVER"; |
log::mac $mac, "DHCP DISCOVER"; |
146 |
$packet->{Comment} = $dhcp->comment(); |
$packet->{Comment} = $dhcp->comment(); |
147 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPOFFER(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPOFFER(); |
148 |
} elsif ($messagetype eq DHCPREQUEST()) { |
} elsif ($messagetype eq DHCPREQUEST()) { |
149 |
my $requested_ip = $dhcp->getOptionValue(DHO_DHCP_REQUESTED_ADDRESS()); |
my $requested_ip = $dhcp->getOptionValue(DHO_DHCP_REQUESTED_ADDRESS()); |
150 |
warn "DHCP REQUEST $requested_ip"; |
log::mac $mac, "DHCP REQUEST $requested_ip $ip $file"; |
151 |
if ( $ip eq $requested_ip ) { |
if ( $ip eq $requested_ip ) { |
152 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK(); |
153 |
$packet->{DHO_DHCP_LEASE_TIME()} = 5 * 60; # 5 min |
$packet->{DHO_DHCP_LEASE_TIME()} = 5 * 60; # 5 min |
154 |
# $packet->{DHO_DHCP_SERVER_IDENTIFIER()} = $server::ip; # FIXME |
# $packet->{DHO_DHCP_SERVER_IDENTIFIER()} = $server::ip; # FIXME |
155 |
$packet->{DHO_SUBNET_MASK()} = '255.255.255.0'; |
$packet->{DHO_SUBNET_MASK()} = '255.255.255.0'; |
156 |
$packet->{DHO_ROUTERS()} = $server::ip; |
$packet->{DHO_ROUTERS()} = $server::ip; |
157 |
# $packet->{DHO_DOMAIN_NAME()} = 'pxelator.lan'; |
$packet->{DHO_DOMAIN_NAME()} = 'pxelator.lan'; |
158 |
# $packet->{DHO_NAME_SERVERS()} = $server::ip; |
$packet->{DHO_NAME_SERVERS()} = $server::ip; |
159 |
# $packet->{DHO_ROOT_PATH()} = '/exports/foobar'; |
# $packet->{DHO_ROOT_PATH()} = '/exports/foobar'; |
160 |
} else { |
} else { |
161 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK(); |
162 |
$packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip"; |
$packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip"; |
163 |
} |
} |
164 |
} elsif ($messagetype eq DHCPINFORM()) { |
} elsif ($messagetype eq DHCPINFORM()) { |
165 |
warn "DHCP INFORM ignored"; |
log::mac $mac, "DHCP INFORM ignored"; |
166 |
} else { |
} else { |
167 |
warn "$messagetype igored (bootp?)"; |
log::mac $mac, "$messagetype igored (bootp?)"; |
168 |
} |
} |
169 |
|
|
170 |
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; |
171 |
|
|
172 |
|
warn "## created packet ", dump( $packet ); |
173 |
|
|
174 |
$packet = new Net::DHCP::Packet( %$packet ); |
$packet = new Net::DHCP::Packet( %$packet ); |
175 |
warn "## ",$packet->toString(),"\n" if $debug; |
warn "send ",$packet->toString() if $debug; |
176 |
|
|
177 |
my $reply = IO::Socket::INET->new( |
my $reply = IO::Socket::INET->new( |
178 |
LocalAddr => $server::ip, |
LocalAddr => $server::ip, |
208 |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
209 |
|
|
210 |
while (1) { |
while (1) { |
|
Module::Refresh->refresh; |
|
211 |
process_packet $sock; |
process_packet $sock; |
212 |
} |
} |
213 |
} |
} |