/[pxelator]/lib/PXElator/dhcpd.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 27 by dpavlin, Wed Jul 29 00:46:29 2009 UTC revision 36 by dpavlin, Wed Jul 29 13:03:39 2009 UTC
# Line 10  use autodie; Line 10  use autodie;
10  use IO::Socket::INET;  use IO::Socket::INET;
11  use File::Slurp;  use File::Slurp;
12  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
13    use Net::Ping;
14    
15  use lib 'lib';  use lib 'lib';
16  use Net::DHCP::Packet;  use Net::DHCP::Packet;
# Line 60  sub client_ip { Line 61  sub client_ip {
61    
62          mkdir $_ foreach grep { ! -e $_ } map { "$conf/$_" } ( 'ip', 'mac' );          mkdir $_ foreach grep { ! -e $_ } map { "$conf/$_" } ( 'ip', 'mac' );
63    
64            my $p = Net::Ping->new;
65    
66          my $prefix = $server_ip;          my $prefix = $server_ip;
67          $prefix =~ s{\.\d+$}{.};          $prefix =~ s{\.\d+$}{.};
68          my $ip = $prefix . $addr;          my $ip = $prefix . $addr;
69          while ( -e "conf/ip/$ip" ) {          while ( -e "conf/ip/$ip" || $p->ping( $ip ) ) {
70                  $ip = $prefix . $addr++;                  $ip = $prefix . $addr++;
71                  die "all addresses allocated!" if $addr == $ip_to;                  die "all addresses allocated!" if $addr == $ip_to;
72          }          }
73    
74          write_file "$conf/mac/$mac", $ip;          write_file "$conf/mac/$mac", $ip;
75          unlink     "$conf/ip/$ip" if -e "$conf/ip/$ip";          if ( -l "$conf/ip/$ip" && readlink "$conf/ip/$ip" ne "$conf/mac/$mac") {
76          symlink    "$conf/mac/$mac", "$conf/ip/$ip";                  unlink     "$conf/ip/$ip";
77                    symlink    "$conf/mac/$mac", "$conf/ip/$ip";
78                    warn "$mac IP changed to $ip";
79            }
80    
81          print "$mac NEW $ip\n";          print "$mac NEW $ip\n";
82    
# Line 132  while (1) { Line 138  while (1) {
138                          warn "DHCP REQUEST $requested_ip";                          warn "DHCP REQUEST $requested_ip";
139                          if ( $ip eq $requested_ip ) {                          if ( $ip eq $requested_ip ) {
140                                  $packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK();                                  $packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPACK();
141                                    $packet->{DHO_DHCP_LEASE_TIME()}   = 100;
142                          } else {                          } else {
143                                  $packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK();                                  $packet->{DHO_DHCP_MESSAGE_TYPE()} = DHCPNAK();
144                                  $packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip";                                  $packet->{DHO_DHCP_MESSAGE()} = "Bad request, expected $ip";
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