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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21 |
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22 |
use lib '..'; |
use lib '..'; |
23 |
use Net::DHCP::Packet; |
use Net::DHCP::Packet; |
34 |
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35 |
warn "server ip $server::ip range: $server::ip_from - $server::ip_to\n"; |
warn "server ip $server::ip range: $server::ip_from - $server::ip_to\n"; |
36 |
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37 |
my $addr = $server::ip_from; |
use client; |
38 |
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39 |
sub client_ip { |
sub client_ip { |
40 |
my ( $mac ) = @_; |
my ( $mac ) = @_; |
41 |
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42 |
my $conf = "$server::base_dir/conf/$server::ip"; |
my $conf = $server::conf; |
43 |
mkdir $conf unless -e $conf; |
mkdir $conf unless -e $conf; |
44 |
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45 |
if ( -e "$conf/mac/$mac" ) { |
if ( -e "$conf/mac/$mac" ) { |
48 |
return $ip; |
return $ip; |
49 |
} |
} |
50 |
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51 |
mkdir $_ foreach grep { ! -e $_ } map { "$conf/$_" } ( 'ip', 'mac' ); |
my $ip = client::next_ip; |
52 |
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53 |
my $p = Net::Ping->new; |
write_file "$conf/mac/$mac", $ip; |
54 |
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55 |
my $prefix = $server::ip; |
my $ip_path = "$conf/ip/$ip"; |
56 |
$prefix =~ s{\.\d+$}{.}; |
mkdir $ip_path unless -e $ip_path; |
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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 == $server::ip_to; |
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} |
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57 |
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58 |
write_file "$conf/mac/$mac", $ip; |
if ( -l "$ip_path/mac" && readlink "$ip_path/mac" ne "$conf/mac/$mac" ) { |
59 |
if ( -l "$conf/ip/$ip" && readlink "$conf/ip/$ip" ne "$conf/mac/$mac") { |
warn "$mac IP changed from ", readlink "$ip_path/mac", " to $ip"; |
60 |
unlink "$conf/ip/$ip"; |
unlink "$ip_path/mac"; |
61 |
symlink "$conf/mac/$mac", "$conf/ip/$ip"; |
}; |
62 |
warn "$mac IP changed to $ip"; |
symlink "$conf/mac/$mac", "$ip_path/mac"; |
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} |
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63 |
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64 |
print "$mac NEW $ip\n"; |
print "$mac NEW $ip\n"; |
65 |
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68 |
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69 |
use log; |
use log; |
70 |
use config; |
use config; |
71 |
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use pxelinux; |
72 |
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use client; |
73 |
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74 |
our $file; |
our $file; |
75 |
our $transaction = 0; # FIXME predictible transaction numbers |
our $transaction = 0; # FIXME predictible transaction numbers |
77 |
sub process_packet { |
sub process_packet { |
78 |
my $sock = shift; |
my $sock = shift; |
79 |
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80 |
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server->refresh; |
81 |
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82 |
my $buf; |
my $buf; |
83 |
$sock->recv($buf, 1024); |
$sock->recv($buf, 1024); |
84 |
my $size = 'empty'; |
my $size = 'empty'; |
120 |
Giaddr => $dhcp->giaddr(), |
Giaddr => $dhcp->giaddr(), |
121 |
Chaddr => $dhcp->chaddr(), |
Chaddr => $dhcp->chaddr(), |
122 |
File => $file, |
File => $file, |
123 |
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DHO_DHCP_SERVER_IDENTIFIER() => $server::ip, # busybox/udhcpc needs it but doesn't request |
124 |
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}; |
125 |
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126 |
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my $options = { |
127 |
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DHO_SUBNET_MASK() => $server::netmask, |
128 |
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DHO_ROUTERS() => $server::ip, |
129 |
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DHO_DOMAIN_NAME() => $server::domain_name, |
130 |
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DHO_NAME_SERVERS() => $server::ip, |
131 |
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DHO_DOMAIN_NAME_SERVERS() => $server::ip, |
132 |
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DHO_HOST_NAME() => client::conf( $ip, 'hostname' ), |
133 |
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DHO_BROADCAST_ADDRESS() => $server::bcast, |
134 |
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# DHO_NTP_SERVERS() => '', |
135 |
}; |
}; |
136 |
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137 |
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my @requested = split(/\s/, $dhcp->getOptionValue(DHO_DHCP_PARAMETER_REQUEST_LIST)); |
138 |
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warn "options ",dump( $options ), ' requested: ',dump( @requested ) if $debug; |
139 |
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140 |
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my @missing; |
141 |
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foreach ( @requested ) { |
142 |
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if ( defined $options->{$_} ) { |
143 |
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$packet->{$_} = $options->{$_}; |
144 |
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} else { |
145 |
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push @missing, $_; |
146 |
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} |
147 |
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} |
148 |
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149 |
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warn "W: options requested but missing: ",dump( @missing ),$/; |
150 |
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151 |
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foreach my $opt ( 'magic', 'config_file', 'path_prefix', 'reboot_time' ) { |
152 |
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my $DH0 = eval 'DHO_PXELINUX_' . uc $opt; |
153 |
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warn "DH0: $@" if $@; |
154 |
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my $v = eval "\$pxelinux::$opt"; |
155 |
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warn "v: $@" if $@; |
156 |
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next unless defined $v; |
157 |
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warn "pxelinux dhcp option $opt = $DH0 = $v\n" if $debug; |
158 |
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$packet->{ $DH0 } = $v; |
159 |
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} |
160 |
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161 |
my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
162 |
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|
163 |
if ($messagetype eq DHCPDISCOVER()) { |
if ($messagetype eq DHCPDISCOVER()) { |
170 |
if ( $ip eq $requested_ip ) { |
if ( $ip eq $requested_ip ) { |
171 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK(); |
172 |
$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; |
|
173 |
# $packet->{DHO_ROOT_PATH()} = '/exports/foobar'; |
# $packet->{DHO_ROOT_PATH()} = '/exports/foobar'; |
174 |
} else { |
} else { |
175 |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK(); |
$packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK(); |
220 |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
221 |
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|
222 |
while (1) { |
while (1) { |
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Module::Refresh->refresh; |
|
223 |
process_packet $sock; |
process_packet $sock; |
224 |
} |
} |
225 |
} |
} |