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use IO::Socket::INET; |
use IO::Socket::INET; |
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use File::Slurp; |
use File::Slurp; |
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use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
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use Net::Ping; |
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use lib '..'; |
use lib '..'; |
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use Net::DHCP::Packet; |
use Net::DHCP::Packet; |
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use Net::DHCP::Constants 0.67; |
use Net::DHCP::Constants 0.67; |
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use CouchDB; |
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use format; |
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use server; |
use server; |
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my $debug = server::debug; |
my $debug = server::debug; |
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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"; |
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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 = $server::conf; |
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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if ( $ip = client::ip_from_mac( $mac ) ) { |
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print "RENEW $mac $ip\n"; |
print "RENEW $mac $ip\n"; |
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return $ip; |
return $ip; |
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} else { |
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$ip = client::next_ip( $mac ); |
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print "NEW $mac $ip\n"; |
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} |
} |
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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; |
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my $ip_path = "$conf/ip/$ip"; |
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mkdir $ip_path unless -e $ip_path; |
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if ( -l "$ip_path/mac" && readlink "$ip_path/mac" ne "$conf/mac/$mac" ) { |
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warn "$mac IP changed from ", readlink "$ip_path/mac", " to $ip"; |
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unlink "$ip_path/mac"; |
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}; |
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symlink "$conf/mac/$mac", "$ip_path/mac"; |
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print "$mac NEW $ip\n"; |
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return $ip; |
return $ip; |
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} |
} |
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my $mac = substr($dhcp->chaddr(),0,$dhcp->hlen()*2); |
my $mac = substr($dhcp->chaddr(),0,$dhcp->hlen()*2); |
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my $ip = client_ip($mac); |
my $ip = client_ip($mac); |
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my $hostname = $dhcp->getOptionValue(DHO_HOST_NAME); |
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print "$ip ", client::conf( $ip => 'hostname', default => $hostname ), " >> /etc/hosts\n"; |
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my $audit = { mac => format::mac($mac), ip => $ip, hostname => $hostname }; |
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=for later |
=for later |
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my $user_class = $dhcp->getOptionValue(DHO_USER_CLASS()); |
my $user_class = $dhcp->getOptionValue(DHO_USER_CLASS()); |
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}; |
}; |
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my @requested = split(/\s/, $dhcp->getOptionValue(DHO_DHCP_PARAMETER_REQUEST_LIST)); |
my @requested = split(/\s/, $dhcp->getOptionValue(DHO_DHCP_PARAMETER_REQUEST_LIST)); |
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warn "options ",dump( $options ), ' requested: ',dump( @requested ); |
warn "options ",dump( $options ), ' requested: ',dump( @requested ) if $debug; |
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my @missing; |
138 |
foreach ( @requested ) { |
foreach ( @requested ) { |
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$packet->{$_} = $options->{$_} if defined $options->{$_}; |
if ( defined $options->{$_} ) { |
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$packet->{$_} = $options->{$_}; |
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} else { |
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push @missing, $_; |
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} |
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} |
} |
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warn "W: options requested but missing: ",dump( @missing ),$/; |
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$audit->{requested} = [ @requested ]; |
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$audit->{missing} = [ @missing ]; |
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foreach my $opt ( 'magic', 'config_file', 'path_prefix', 'reboot_time' ) { |
foreach my $opt ( 'magic', 'config_file', 'path_prefix', 'reboot_time' ) { |
151 |
my $DH0 = eval 'DHO_PXELINUX_' . uc $opt; |
my $DH0 = eval 'DHO_PXELINUX_' . uc $opt; |
152 |
warn "DH0: $@" if $@; |
warn "DH0: $@" if $@; |
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my $v = eval "\$pxelinux::$opt"; |
my $v = eval "\$pxelinux::$opt"; |
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warn "v: $@" if $@; |
warn "v: $@" if $@; |
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next unless defined $v; |
next unless defined $v; |
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warn "pxelinux dhcp option $opt = $DH0 = $v"; |
warn "pxelinux dhcp option $opt = $DH0 = $v\n" if $debug; |
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$packet->{ $DH0 } = $v; |
$packet->{ $DH0 } = $v; |
158 |
} |
} |
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my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
my $messagetype = $dhcp->getOptionValue(DHO_DHCP_MESSAGE_TYPE()); |
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if ($messagetype eq DHCPDISCOVER()) { |
if ($messagetype eq DHCPDISCOVER()) { |
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log::mac $mac, "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 |
log::mac $mac, "DHCP REQUEST $requested_ip $ip $file"; |
$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 |
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 |
log::mac $mac, "DHCP INFORM ignored"; |
$audit->{type} = 'inform'; |
179 |
} else { |
} else { |
180 |
log::mac $mac, "$messagetype igored (bootp?)"; |
$audit->{type} = sprintf('ignored %x', $messagetype); |
181 |
} |
} |
182 |
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warn "packet ",dump( $packet ); |
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183 |
warn ">> $mac == $ip server: $server::ip", $file ? " file: $file\n" : "\n" if $debug; |
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 "send ",$packet->toString() 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 => $server::ip, |
193 |
LocalPort => 67, |
LocalPort => 67, |
221 |
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222 |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
print "DHCP listen on ",$sock->sockhost,":",$sock->sockport,"\n"; |
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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) { |
227 |
process_packet $sock; |
process_packet $sock; |
228 |
} |
} |