#!/usr/bin/perl # # François Pons # # Copyright 2003 MandrakeSoft # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2, as # published by the Free Software Foundation. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # use strict; use lib qw(/usr/lib/libDrakX); use standalone; #- warning, standalone must be loaded very first, for 'explanations' use common; use interactive; use network; use log; use c; use network::netconnect; $::isInstall and die "Not supported during install.\n"; $::Wizard_pix_up = "wiz_drakgw.png"; #- to change ? keep existing one, nobody will see (too late) ;-) $::direct = grep { /-direct/ } @ARGV; # #my $sysconf_network = "/etc/sysconfig/network"; #my $sysconf_dhcpd = "/etc/sysconfig/dhcpd"; #my $rc_firewall_generic = "/etc/rc.d/rc.firewall"; #my $rc_firewall_drakgw = "/etc/rc.d/rc.firewall.inet_sharing"; #my $rc_firewall_24 = "/etc/rc.d/rc.firewall.inet_sharing-2.4"; #my $masq_file = "/etc/shorewall/masq"; #my $cups_conf = "/etc/cups/cupsd.conf"; # #my $shorewall = network::shorewall::read(); # #- get network configuration. my $netc = {}; my $intf = {}; network::read_all_conf('', $netc, $intf); my $in = 'interactive'->vnew('su', 'default'); $::Wizard_title = N("PXE Server Configuration"); !$::isEmbedded && $in->isa('interactive::gtk') and $::isWizard = 1; #pur_gtk_mode() if $::isEmbedded && $in->isa('interactive::gtk'); sub sys { system(@_) == 0 or log::l("[drakpxe] Warning, sys failed for $_[0]") } sub outpend { log::explanations("modified file $_[0]"); my $f = shift; local *F; open F, ">>$f" or die "outpend in file $f failed: $!\n"; print F foreach @_; } sub start_daemons () { log::explanations("Starting daemons"); system("/etc/rc.d/init.d/dhcpd status >/dev/null") == 0 and sys("/etc/rc.d/init.d/dhcpd stop"); sys("/etc/rc.d/init.d/$_ start >/dev/null"), sys("/sbin/chkconfig --level 345 $_ on") foreach 'httpd', 'dhcpd'; } sub stop_daemons () { log::explanations("Stopping daemons"); foreach (qw(dhcpd httpd)) { system("/etc/rc.d/init.d/$_ status >/dev/null 2>/dev/null") == 0 and sys("/etc/rc.d/init.d/$_ stop"); } sys("/sbin/chkconfig --level 345 $_ off") foreach 'dhcpd', 'httpd'; } my $wait_configuring; sub quit_global { my ($in, $exitcode) = @_; $in->exit($exitcode); goto begin } sub fatal_quit ($) { log::l("[drakpxe] FATAL: $_[0]"); undef $wait_configuring; $in->ask_warn('', $_[0]); quit_global($in, -1); } #my ($kernel_version) = c::kernel_version() =~ /(...)/; #log::l("[drakgw] kernel_version $kernel_version"); # #$kernel_version >= 2.4 or fatal_quit(N("Sorry, we support only 2.4 kernels.")); begin: #- ********************************** #- * 0th step: verify if we have multiple network interface. $::Wizard_no_previous = 1; $::direct or $in->ask_okcancel(N("Installation Server Configuration"), N("You are about to configure your computer to install a PXE server as a DHCP server and a TFTP server to build an installation server. With that feature, other computers on your local network will be installable using from this computer. Make sure you have configured your Network/Internet access using drakconnect before going any further. Note: you need a dedicated Network Adapter to set up a Local Area Network (LAN)."), 1) or quit_global($in, 0); undef $::Wizard_no_previous; #- ********************************** #- * 1st step: verify if we have multiple network interface. step_check_intf: my @intf = grep { exists $_->{NETWORK} } map { unless ($_->{NETWORK}) { foreach my $s (split "\n", `route`) { print STDERR "$s\n"; $s =~ /^(\S+)\s+\S+\s+$_->{NETMASK}\s+.*$_->{DEVICE}/ and $_->{NETWORK} = $1; } } $_ } values %$intf; if (@intf < 1) { #- no interface already configured found, ask user to configure. $in->ask_warn(N("No network adapter on your system!"), N("No ethernet network adapter has been detected on your system. Please run the hardware configuration tool.")); quit_global($in, 0); } elsif (@intf > 1) { #- there are more than one interface, we need to choose one of them. @intf = ($in->ask_from_listf(N("Choose the network interface"), N("Please choose which network interface will be used for the dhcp server."), sub { N("Interface %s (on network %s)", $_[0]{DEVICE}, $_[0]{NETWORK}) }, \@intf, ) or goto begin); } #- ********************************** #- * 3rd step: select installation directory to be used (if not present, next step #- will be creation and copy from existing one). step_ip_range: #- read current configuration, or create a default suitable automatically. my $dhcpd_conf = parse_dhcpd_conf("/etc/dhcpd.conf", {}, $netc, $intf[0]); #- get back default of ip. my $pool; foreach (@{$dhcpd_conf->{network}{pool}}) { exists $_->{allow}{$dhcpd_conf->{class_PXE}} and $pool = $_, last; } my ($start_ip, $end_ip) = @{$pool || { start_ip => join('.', (split '\.', $intf[0]{NETWORK})[0..2], 16), end_ip => join('.', (split '\.', $intf[0]{NETWORK})[0..2], 253) }}{qw(start_ip end_ip)}; #- it become too complicated to handle address range, so ask user directly. $in->ask_from('DHCP Server Configuration', N("The DHCP server will allow other computer to boot using PXE in the given range of address. The network address is %s using a netmask of %s. ", @{$intf[0]}{qw(NETWORK NETMASK)}), [ { label => N("The DHCP start ip"), val => \$start_ip, type => 'entry' }, { label => N("The DHCP end ip"), val => \$end_ip, type => 'entry' }, ]) or goto begin; #- ********************************** #- * 3rd step: select installation directory to be used (if not present, next step #- will be creation and copy from existing one). step_install_dir: my $dir = "/export"; #- TODO change according configuration? $in->ask_from('Choose the installation image directory', N("Please indicate where the installation image will be available. If you do not have an existing directory, please copy the CD or DVD contents. "), [ { label => N("Installation image directory"), val => \$dir, type => 'entry' }, ]) or goto step_ip_range; unless (-d $dir && -e "$dir/VERSION" && -d "$dir/isolinux" && -d "$dir/Mandrake/base") { $in->ask_warn(N("No image found"), N("No CD or DVD image found, please copy the installation program and rpm files.")); goto step_install_dir; } #- ********************************** #- * 4st step: ask user for auto installation file. step_auto_install: my $auto_inst_cfg = "Mandrake/base/auto_inst.cfg"; #- TODO change according configuration? -e "$dir/$auto_inst_cfg" or $auto_inst_cfg = ''; $in->ask_from('Choose auto installation', N("Please indicate where the auto_install.cfg file is located. Leave it blank if you do not want to set up automatic installation mode. "), [ { label => N("Location of auto_install.cfg file"), val => \$auto_inst_cfg, type => 'entry' }, ]) or goto step_install_dir; #- now install packages... my %rpm2file = ('dhcp-server' => '/usr/sbin/dhcpd', 'pxe' => '/usr/sbin/pxe', 'tftp-server' => '/usr/sbin/in.tftpd', 'apache2' => '/usr/sbin/httpd2'); #- first: try to install all in one step my @needed_to_install = grep { !-e $rpm2file{$_} } keys %rpm2file; @needed_to_install and $in->do_pkgs->install(@needed_to_install); #- second: try one by one if failure detected if (grep { !-e $rpm2file{$_} } keys %rpm2file) { foreach (keys %rpm2file) { -e $rpm2file{$_} or $in->do_pkgs->install($_); -e $rpm2file{$_} or fatal_quit(N("Problems installing package %s", $_)); } } #- check if a pool already exist allowing PXE, else create one wich will be correct. if ($pool) { @{$pool}{qw(start_ip end_ip)} = ($start_ip, $end_ip); } else { $pool = { start_ip => $start_ip, end_ip => $end_ip }; foreach (keys %{$dhcpd_conf->{class}}) { $pool->{$_ eq $dhcpd_conf->{class_PXE} || $_ eq 'Etherboot' ? 'allow' : 'deny'}{$_} = undef; } push @{$dhcpd_conf->{network}{pool}}, $pool; } build_dhcpd_conf($dhcpd_conf, "/etc/dhcpd.conf"); #- make kernel and initrd available for initrd. mkdir "/var/lib/tftpboot/PXEClient/images"; sys("cp", "-af", "$dir/isolinux/alt0", "/var/lib/tftpboot/PXEClient/images/"); my $pxelinux_cfg = parse_pxelinux_cfg("/var/lib/tftpboot/PXEClient/pxelinux.cfg/default"); my $label; foreach my $i (0..99) { $label = undef; foreach my $e (@{$pxelinux_cfg->{entry}}) { $e->{label} eq "halt$i" and $label = "halt$i", last; } defined $label or $label = "halt$i", last; } my $server = $intf[0]{IPADDR} || $netc->{HOSTNAME}; push @{$pxelinux_cfg->{entry}}, { label => $label, kernel => "images/alt0/vmlinuz", append => "initrd=images/alt0/all.rdz ramdisk=32000 vga=788 ".($auto_inst_cfg ? "kickstart=$auto_inst_cfg " : "")."automatic=method:http,network:dhcp,interface:eth0,dns:$netc->{dnsServer},server:$server,directory:$dir root=/dev/ram3" }; build_pxelinux_cfg($pxelinux_cfg, "/var/lib/tftpboot/PXEClient/pxelinux.cfg/default"); #- make directory available for httpd. log::explanations("Linking $dir in /var/www/html to make it available"); system "mkdir", "-p", "/var/www/html/$dir"; rmdir "/var/www/html/$dir"; symlink $dir, "/var/www/html/$dir"; stop_daemons(); start_daemons(); #- sub for reading/writing dhcpd.conf and pxelinux.cfg/default... sub parse_dhcpd_conf { my ($file, undef, $netc, $intf) = @_; my (%dhcpd_conf, $pool); local (*F, $_); #- fake reading configuration from dhcpd.conf file which is really too complex for this tools. $dhcpd_conf{class_PXE} = 'PXE'; $dhcpd_conf{class} = { PXE => undef, Etherboot => undef, known => undef }; add2hash($dhcpd_conf{network} = { pool => [] }, $intf); add2hash($dhcpd_conf{network}, $netc); if (open F, $file) { while () { if (/^\s*pool\s*{/ .. /}/) { /^\s*range\s+(\S+)\s+(\S+)\s*;/ and ($pool->{start_ip}, $pool->{end_ip}) = ($1, $2); /^\s*(allow|deny)\s+members\s+of\s+"([^"]*)"\s*;/ and $pool->{$1}{$2} = undef; /}/ and do { push @{$dhcpd_conf{network}{pool}}, $pool; $pool = undef }; } } close F; } \%dhcpd_conf; } sub build_dhcpd_conf { my ($dhcpd_conf, $file) = @_; local *F; my $server = $dhcpd_conf->{network}{IPADDR} || $dhcpd_conf->{network}{HOSTNAME}; open F, ">$file" or return; log::explanations("Modified file $file"); print F qq(# for explanation in french go to : http://www.delafond.org/traducmanfr/man/man5/dhcpd.conf.5.html ddns-update-style none; allow booting; allow bootp; # Your dhcp server is not master on your network ! #not authoritative; # Your dhcpd server is master on your network ! #authoritative; not authoritative; #Interface where dhcpd is active DHCPD_INTERFACE = "$dhcpd_conf->{network}{DEVICE}"; # Definition of PXE-specific options # Code 1: Multicast IP address of bootfile # Code 2: UDP port that client should monitor for MTFTP responses # Code 3: UDP port that MTFTP servers are using to listen for MTFTP requests # Code 4: Number of secondes a client must listen for activity before trying # to start a new MTFTP transfer # Code 5: Number of secondes a client must listen before trying to restart # a MTFTP transfer # define Option for the PXE class option space PXE; option PXE.mtftp-ip code 1 = ip-address; option PXE.mtftp-cport code 2 = unsigned integer 16; option PXE.mtftp-sport code 3 = unsigned integer 16; option PXE.mtftp-tmout code 4 = unsigned integer 8; option PXE.mtftp-delay code 5 = unsigned integer 8; option PXE.discovery-control code 6 = unsigned integer 8; option PXE.discovery-mcast-addr code 7 = ip-address; #Define options for pxelinux option space pxelinux; option pxelinux.magic code 208 = string; option pxelinux.configfile code 209 = text; option pxelinux.pathprefix code 210 = text; option pxelinux.reboottime code 211 = unsigned integer 32; site-option-space "pxelinux"; # These lines should be customized to your setup #option pxelinux.configfile "configs/common"; #option pxelinux.pathprefix "/pxelinux/files/"; #filename "/pxelinux/pxelinux.bin"; option pxelinux.magic f1:00:74:7e; option pxelinux.reboottime 30; #if exists dhcp-parameter-request-list { # Always send the PXELINUX options # append dhcp-parameter-request-list 208, 209, 210, 211; # append dhcp-parameter-request-list 208,211; # } #Class that determine the options for Etherboot 5.x requests class "Etherboot" { #if The vendor-class-identifier equal Etherboot-5.0 match if substring (option vendor-class-identifier, 0, 13) = "Etherboot-5.0"; # filename define the file retrieve by the client, there nbgrub # our tftp is chrooted so is just the path to the file filename "/etherboot/nbgrub"; #Used by etherboot to detect a valid pxe dhcp server option vendor-encapsulated-options 3c:09:45:74:68:65:72:62:6f:6f:74:ff; # Set the "vendor-class-identifier" field to "PXEClient" in dhcp answer # if this field is not set the pxe client will ignore the answer ! option vendor-class-identifier "Etherboot-5.0"; vendor-option-space PXE; option PXE.mtftp-ip 0.0.0.0; # IP of you TFTP server next-server $server; } # create the Class PXE class "PXE" { # if the "vendor-class-identifier" is set to "PXEClient" in the client dhcp request match if substring(option vendor-class-identifier, 0, 9) = "PXEClient"; # filename define the file retrieve by the client, there pxelinux.0 # our tftp is chrooted so is just the path to the file # If you prefer use grub, use pxegrub compiled for your ethernet card. #filename "/PXEClient/pxegrub"; filename "/PXEClient/pxelinux.0"; # Set the "vendor-class-identifier" field to "PXEClient" in dhcp answer # if this field is not set the pxe client will ignore the answer ! option vendor-class-identifier "PXEClient"; vendor-option-space PXE; option PXE.mtftp-ip 0.0.0.0; # IP of you TFTP server next-server $server; } # the class know exist just for deny the response to other DHCP request class "known" { match hardware; one-lease-per-client on; ddns-updates on; ddns-domainname = "$dhcpd_conf->{network}{DOMAINNAME}"; option domain-name "$dhcpd_conf->{network}{DOMAINNAME}"; option domain-name-servers $dhcpd_conf->{network}{dnsServer}; ddns-hostname = pick-first-value(ddns-hostname, option host-name); option fqdn.no-client-update on; set vendor_class_identifier = option vendor-class-identifier; } # Tags uses by setup_node_mac_to_dhcp # TAG: NODE_LIST_BEGIN # TAG: NODE_LIST_END shared-network "mynetwork" { subnet $dhcpd_conf->{network}{NETWORK} netmask $dhcpd_conf->{network}{NETMASK} { option subnet-mask $dhcpd_conf->{network}{NETMASK}; option routers $dhcpd_conf->{network}{GATEWAY}; default-lease-time 28800; max-lease-time 86400; option domain-name "$dhcpd_conf->{network}{DOMAINNAME}"; option domain-name-servers $dhcpd_conf->{network}{dnsServer}; # Used by clusterautosetup-client to find its server next-server $server; ); foreach (@{$dhcpd_conf->{network}{pool}}) { print F " pool { range $_->{start_ip} $_->{end_ip}; "; print F " allow members of \"$_\";\n" foreach keys %{$_->{allow}}; print F " deny members of \"$_\";\n" foreach keys %{$_->{deny}}; print F " }\n"; } print F qq( # pool { # range 192.168.200.200 192.168.200.254; # give an address of the the pool for PXE client and deny the other #allow members of "PXE"; #deny members of "known"; #allow members of "Etherboot"; # } } } ); close F; } sub parse_pxelinux_cfg { my ($file) = @_; my (%pxelinux_cfg, $entry); local (*F, $_); if (open F, $file) { while () { chomp; s/#.*//; next if /^\s*$/; if (/^\s*(PROMPT|DEFAULT|DISPLAY|TIMEOUT)\s+(.*)/i) { $pxelinux_cfg{$1} = $2; } elsif (/^\s*label\s+(.*)/i) { $entry and push @{$pxelinux_cfg{entry}}, $entry; $entry = { label => $1 }, } elsif (/^\s*(LOCALBOOT|KERNEL|APPEND)\s+(.*)/i) { $entry->{$1} = $2; } else { log::l("ignoring line in file $file due to parsing error"); } } $entry and push @{$pxelinux_cfg{entry}}, $entry; close F; } #- try to fix bad file (first version of drakpxe for example). my %default_pxelinux_cfg = ( PROMPT => 1, DEFAULT => "local", DISPLAY => "messages", TIMEOUT => 50, entry => [ { label => "local", LOCALBOOT => 0 } ], ); foreach (qw(PROMPT DEFAULT DISPLAY TIMEOUT entry)) { length $pxelinux_cfg{$_} > 0 or $pxelinux_cfg{$_} = $default_pxelinux_cfg{$_}; } \%pxelinux_cfg; } sub build_pxelinux_cfg { my ($pxelinux_cfg, $file) = @_; local *F; open F, ">$file" or return; log::explanations("Modified file $file"); foreach (keys %$pxelinux_cfg) { /^entry$/ and next; print F "$_ $pxelinux_cfg->{$_}\n"; } foreach my $e (@{$pxelinux_cfg->{entry}}) { print F "label $e->{label}\n"; foreach (keys %$e) { /^label$/ and next; print F " $_ $e->{$_}\n"; } } close F; }