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/; |
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use Net::Ping; |
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use Module::Refresh; |
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22 |
use lib '..'; |
use lib '..'; |
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use Net::DHCP::Packet; |
use Net::DHCP::Packet; |
24 |
use Net::DHCP::Constants 0.67; |
use Net::DHCP::Constants 0.67; |
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26 |
use server; |
use CouchDB; |
27 |
use pxe; |
use format; |
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29 |
my $debug = 1; |
use server; |
30 |
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my $debug = server::debug; |
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32 |
if ( ! $server::ip ) { |
if ( ! $server::ip ) { |
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my $server_ip = `/sbin/ifconfig`; |
my $server_ip = `/sbin/ifconfig`; |
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$server::ip = $server_ip; |
$server::ip = $server_ip; |
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} |
} |
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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"; |
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my $addr = $server::ip_from; |
use client; |
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sub client_ip { |
sub client_ip { |
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my ( $mac ) = @_; |
my ( $mac ) = @_; |
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my $conf = "conf/$server::ip"; |
my $conf = $server::conf; |
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mkdir $conf unless -e $conf; |
mkdir $conf unless -e $conf; |
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if ( -e "$conf/mac/$mac" ) { |
my $ip; |
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my $ip = read_file "$conf/mac/$mac"; |
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print "$mac old $ip\n"; |
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return $ip; |
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} |
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mkdir $_ foreach grep { ! -e $_ } map { "$conf/$_" } ( 'ip', 'mac' ); |
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my $p = Net::Ping->new; |
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my $prefix = $server::ip; |
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$prefix =~ s{\.\d+$}{.}; |
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my $ip = $prefix . $addr; |
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while ( -e "conf/ip/$ip" || $p->ping( $ip ) ) { |
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$ip = $prefix . $addr++; |
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die "all addresses allocated!" if $addr == $server::ip_to; |
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} |
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write_file "$conf/mac/$mac", $ip; |
if ( $ip = client::ip_from_mac( $mac ) ) { |
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if ( -l "$conf/ip/$ip" && readlink "$conf/ip/$ip" ne "$conf/mac/$mac") { |
print "RENEW $mac $ip\n"; |
52 |
unlink "$conf/ip/$ip"; |
return $ip; |
53 |
symlink "$conf/mac/$mac", "$conf/ip/$ip"; |
} else { |
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warn "$mac IP changed to $ip"; |
$ip = client::next_ip( $mac ); |
55 |
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print "NEW $mac $ip\n"; |
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} |
} |
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print "$mac NEW $ip\n"; |
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return $ip; |
return $ip; |
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} |
} |
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use log; |
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use config; |
63 |
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use pxelinux; |
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use client; |
65 |
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66 |
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our $file; |
67 |
our $transaction = 0; # FIXME predictible transaction numbers |
our $transaction = 0; # FIXME predictible transaction numbers |
68 |
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sub process_packet { |
sub process_packet { |
70 |
my $sock = shift; |
my $sock = shift; |
71 |
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72 |
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server->refresh; |
73 |
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my $buf; |
my $buf; |
75 |
$sock->recv($buf, 1024); |
$sock->recv($buf, 1024); |
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my $size = 'empty'; |
my $size = 'empty'; |
77 |
$size = length($buf) . ' bytes' if defined $buf; |
$size = length($buf) . ' bytes' if defined $buf; |
78 |
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79 |
print "packet from ",$sock->peerhost,":",$sock->peerport," $size\n"; |
print "packet from ",$sock->peerhost,":",$sock->peerport," $size\n" if $debug; |
80 |
return unless $buf; |
return unless $buf; |
81 |
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my $dhcp = Net::DHCP::Packet->new($buf); |
my $dhcp = Net::DHCP::Packet->new($buf); |
83 |
$dhcp->comment( $transaction++ ); |
$dhcp->comment( $transaction++ ); |
84 |
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warn "recv: ", $dhcp->toString; |
warn "recv: ", $dhcp->toString if $debug; |
86 |
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my $mac = substr($dhcp->chaddr(),0,$dhcp->hlen()*2); |
my $mac = substr($dhcp->chaddr(),0,$dhcp->hlen()*2); |
88 |
my $ip = client_ip($mac); |
my $ip = client_ip($mac); |
89 |
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90 |
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my $hostname = $dhcp->getOptionValue(DHO_HOST_NAME); |
91 |
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print "$ip ", client::conf( $ip => 'hostname', default => $hostname ), " >> /etc/hosts\n"; |
92 |
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93 |
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my $audit = { mac => format::mac($mac), ip => $ip, hostname => $hostname }; |
94 |
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95 |
=for later |
=for later |
96 |
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my $user_class = $dhcp->getOptionValue(DHO_USER_CLASS()); |
my $user_class = $dhcp->getOptionValue(DHO_USER_CLASS()); |
104 |
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105 |
=cut |
=cut |
106 |
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107 |
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config::for_ip( $ip ); |
108 |
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109 |
my $packet = { |
my $packet = { |
110 |
Op => BOOTREPLY(), |
Op => BOOTREPLY(), |
111 |
Hops => $dhcp->hops(), |
Hops => $dhcp->hops(), |
116 |
Siaddr => $server::ip, |
Siaddr => $server::ip, |
117 |
Giaddr => $dhcp->giaddr(), |
Giaddr => $dhcp->giaddr(), |
118 |
Chaddr => $dhcp->chaddr(), |
Chaddr => $dhcp->chaddr(), |
119 |
File => $pxe::file, |
File => $file, |
120 |
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DHO_DHCP_SERVER_IDENTIFIER() => $server::ip, # busybox/udhcpc needs it but doesn't request |
121 |
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}; |
122 |
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123 |
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my $options = { |
124 |
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DHO_SUBNET_MASK() => $server::netmask, |
125 |
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DHO_ROUTERS() => $server::ip, |
126 |
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DHO_DOMAIN_NAME() => $server::domain_name, |
127 |
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DHO_NAME_SERVERS() => $server::ip, |
128 |
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DHO_DOMAIN_NAME_SERVERS() => $server::ip, |
129 |
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DHO_HOST_NAME() => client::conf( $ip, 'hostname' ), |
130 |
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DHO_BROADCAST_ADDRESS() => $server::bcast, |
131 |
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# DHO_NTP_SERVERS() => '', |
132 |
}; |
}; |
133 |
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134 |
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my @requested = split(/\s/, $dhcp->getOptionValue(DHO_DHCP_PARAMETER_REQUEST_LIST)); |
135 |
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warn "options ",dump( $options ), ' requested: ',dump( @requested ) if $debug; |
136 |
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137 |
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my @missing; |
138 |
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foreach ( @requested ) { |
139 |
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if ( defined $options->{$_} ) { |
140 |
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$packet->{$_} = $options->{$_}; |
141 |
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} else { |
142 |
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push @missing, $_; |
143 |
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} |
144 |
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} |
145 |
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146 |
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warn "W: options requested but missing: ",dump( @missing ),$/; |
147 |
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$audit->{requested} = [ @requested ]; |
148 |
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$audit->{missing} = [ @missing ]; |
149 |
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150 |
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foreach my $opt ( 'magic', 'config_file', 'path_prefix', 'reboot_time' ) { |
151 |
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my $DH0 = eval 'DHO_PXELINUX_' . uc $opt; |
152 |
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warn "DH0: $@" if $@; |
153 |
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my $v = eval "\$pxelinux::$opt"; |
154 |
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warn "v: $@" if $@; |
155 |
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next unless defined $v; |
156 |
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warn "pxelinux dhcp option $opt = $DH0 = $v\n" if $debug; |
157 |
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$packet->{ $DH0 } = $v; |
158 |
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} |
159 |
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160 |
my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
161 |
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162 |
if ($messagetype eq DHCPDISCOVER()) { |
if ($messagetype eq DHCPDISCOVER()) { |
163 |
warn "DHCP DISCOVER"; |
$audit->{type} = 'discover'; |
164 |
$packet->{Comment} = $dhcp->comment(); |
$packet->{Comment} = $dhcp->comment(); |
165 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPOFFER(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPOFFER(); |
166 |
} elsif ($messagetype eq DHCPREQUEST()) { |
} elsif ($messagetype eq DHCPREQUEST()) { |
167 |
my $requested_ip = $dhcp->getOptionValue(DHO_DHCP_REQUESTED_ADDRESS()); |
my $requested_ip = $dhcp->getOptionValue(DHO_DHCP_REQUESTED_ADDRESS()); |
168 |
warn "DHCP REQUEST $requested_ip"; |
$audit->{type} = 'request'; |
169 |
if ( $ip eq $requested_ip ) { |
if ( $ip eq $requested_ip ) { |
170 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK(); |
171 |
$packet->{DHO_DHCP_LEASE_TIME()} = 5 * 60; # 5 min |
$packet->{DHO_DHCP_LEASE_TIME()} = 5 * 60; # 5 min |
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# $packet->{DHO_DHCP_SERVER_IDENTIFIER()} = $server::ip; # FIXME |
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$packet->{DHO_SUBNET_MASK()} = '255.255.255.0'; |
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$packet->{DHO_ROUTERS()} = $server::ip; |
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# $packet->{DHO_DOMAIN_NAME()} = 'pxelator.lan'; |
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# $packet->{DHO_NAME_SERVERS()} = $server::ip; |
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172 |
# $packet->{DHO_ROOT_PATH()} = '/exports/foobar'; |
# $packet->{DHO_ROOT_PATH()} = '/exports/foobar'; |
173 |
} else { |
} else { |
174 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK(); |
175 |
$packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip"; |
$packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip"; |
176 |
} |
} |
177 |
} elsif ($messagetype eq DHCPINFORM()) { |
} elsif ($messagetype eq DHCPINFORM()) { |
178 |
warn "DHCP INFORM ignored"; |
$audit->{type} = 'inform'; |
179 |
} else { |
} else { |
180 |
warn "$messagetype igored (bootp?)"; |
$audit->{type} = sprintf('ignored %x', $messagetype); |
181 |
} |
} |
182 |
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183 |
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 $debug; |
184 |
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$audit->{response} = $packet; |
185 |
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186 |
$packet = new Net::DHCP::Packet( %$packet ); |
$packet = new Net::DHCP::Packet( %$packet ); |
187 |
warn "## ",$packet->toString(),"\n" if $debug; |
warn "send ",$packet->toString() if $debug; |
188 |
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189 |
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CouchDB::audit( $audit->{type}, $audit ); |
190 |
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191 |
my $reply = IO::Socket::INET->new( |
my $reply = IO::Socket::INET->new( |
192 |
LocalAddr => $server::ip, |
LocalAddr => $server::ip, |
221 |
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222 |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
223 |
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224 |
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CouchDB::audit( 'start', { 'listen' => { addr => $sock->sockhost, port => $sock->sockport } } ); |
225 |
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226 |
while (1) { |
while (1) { |
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Module::Refresh->refresh; |
|
227 |
process_packet $sock; |
process_packet $sock; |
228 |
} |
} |
229 |
} |
} |