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package network::pxe;
use common;
use network::tools;
use Xconfig::resolution_and_depth;
our $tftp_root = "/var/lib/tftpboot";
my $client_path = '/X86PC/linux';
our $pxelinux_client_root = $tftp_root . $client_path;
our $pxelinux_images = $pxelinux_client_root . '/images';
our $pxelinux_help_file = $pxelinux_client_root . '/help.txt';
our $pxelinux_message_file = $pxelinux_client_root . '/messages';
our $pxelinux_config_file = $pxelinux_client_root . '/pxelinux.cfg/default';
our $pxe_config_file = '/etc/pxe.conf';
my @global_pxelinux_settings = qw(PROMPT DEFAULT DISPLAY TIMEOUT F1);
my @append_settings = qw(initrd ramdisk_size vga display);
my @automatic_settings = qw(method interface network server directory);
our %vga_bios_to_resolution = (
'normal' => "vga",
'text' => "text",
'' => "automatic",
map { $_->{bios} => "$_->{X}x$_->{Y}" } grep { $_->{Depth} == 16 } Xconfig::resolution_and_depth::bios_vga_modes()
);
our %vga_resolution_to_bios = reverse %vga_bios_to_resolution;
sub read_pxelinux_help {
my ($help_file) = @_;
my %info;
foreach (cat_($help_file)) {
/^(\w+)\s*:\s*(.*)$/ and $info{$1} = $2;
}
\%info;
}
sub read_pxelinux_conf {
my ($conf_file, $help_file) = @_;
my (%conf);
my $info = read_pxelinux_help($help_file);
my $entry = {};
foreach (cat_($conf_file)) {
my $global = join('|', @global_pxelinux_settings);
if (/^($global)\s+(.*)/) {
$conf{lc($1)} = $2;
} elsif (/^label\s+(.*)/) {
$entry->{label} = $1;
} elsif (/^\s+LOCALBOOT\s+(\d+)/) {
$entry->{localboot} = $1;
} elsif (/^\s+KERNEL\s+(.*)/) {
$entry->{kernel} = $1;
} elsif (/^\s+APPEND\s+(.*)/) {
my @others;
foreach (split /\s+/, $1) {
my ($option, $value) = /^(.+?)(?:=(.*))?$/;
if (member($option, @append_settings)) {
$entry->{$option} = $value;
} elsif ($option eq 'automatic') {
foreach (split /,/, $value) {
my ($option, $value) = /^(.+?):(.+)$/;
$entry->{$option} = $value;
}
} else {
push @others, $_;
}
}
$entry->{others} = join(' ', @others);
}
if (exists $entry->{label} && (exists $entry->{localboot} || exists $entry->{kernel} && exists $entry->{initrd})) {
$entry->{info} = $info->{$entry->{label}};
exists $entry->{vga} and $entry->{vga} = $vga_bios_to_resolution{$entry->{vga}};
push @{$conf{entries}}, $entry;
$entry = {};
}
}
\%conf;
}
sub list_pxelinux_labels {
my ($conf) = @_;
map { $_->{label} } @{$conf->{entries}};
}
sub write_pxelinux_conf {
my ($conf, $conf_file) = @_;
output($conf_file,
join("\n",
"# DO NOT EDIT auto_generated by drakpxelinux.pl",
(map { $_ . ' ' . $conf->{lc($_)} } @global_pxelinux_settings),
'',
(map {
my $e = $_;
my $automatic = join(',', map { "$_:$e->{$_}" } grep { $e->{$_} } @automatic_settings);
("label $e->{label}",
exists $e->{localboot} ?
" LOCALBOOT $e->{localboot}" :
(" KERNEL $e->{kernel}",
" APPEND " . join(' ',
(map { "$_=$e->{$_}" } grep { $e->{$_} } @append_settings),
if_($automatic, "automatic=$automatic"),
$e->{others})),
'');
} @{$conf->{entries}})));
}
sub write_default_pxe_messages {
my ($net) = @_;
my $hostname = $net->{hostname} || chomp_(`hostname`);
output($pxelinux_message_file, <<EOF);
Welcome to Mandrakelinux PXE Server
Pxelinux
. .-----------------------------------.
/|\\ / Press F1 for available images \\
/_|_\\ \\ Hosted by $hostname
\\ | / _ /'-----------------------------------'
\\|/ (') /
'. U / (O__
. '. / (o_ (o_ (0_ //\\
{o_ (o_ (o_ (o_ (o_ //\\ //\\ //\\ // )
(')_ (`)_ (/)_ (/)_ (/)_ V_/_ V_/_ V_/_ V__/_
---------------------------------------------------------
press F1 for help
EOF
}
sub write_default_pxe_help() {
output($pxelinux_help_file, <<EOF);
Available images are:
---------------------
local: local boot
EOF
}
sub add_in_help {
my ($NAME, $INFO) = @_;
if (!any { /$NAME/ } cat_($pxelinux_help_file)) {
append_to_file($pxelinux_help_file, <<EOF);
$NAME : $INFO
EOF
} else {
substInFile {
s/$NAME.*/$NAME : $INFO/;
} $pxelinux_help_file;
}
}
sub change_label_in_help {
my ($NAMEOLD, $NEWNAME) = @_;
substInFile {
s/$NAMEOLD\s(.*)/$NEWNAME $1/;
} $pxelinux_help_file;
}
# remove entry in help.txt
sub remove_in_help {
my ($NAME) = @_;
substInFile {
s/^$NAME\s:.*//x;
s/^\s*$//;
} $pxelinux_help_file;
}
# adjust pxe confi with good value
sub write_pxe_conf {
my ($net, $interface) = @_;
if (!-f "$pxe_config_file.orig") { cp_af($pxe_config_file, "$pxe_config_file.orig") }
my $domainname = $net->{resolv}{domainname} || chomp_(`dnsdomainname`);
my $ip_address = network::tools::get_interface_ip_address($net, $interface);
substInFile {
s/default_address.*/default_address=$ip_address/;
s/mtftp_address.*/mtftp_address=$ip_address/;
s/domain.*/domain=$domainname/;
} $pxe_config_file;
}
1;
|
