- create network::pxe out of drakpxelinux (pxe configuration files management)

- get_items() -> network::pxe::read_pxelinux_conf()
- don't read comments in pxelinux configuration file
- store pxelinux configuration in a hash to avoid multiple cat_()
- add network::pxe::list_pxelinux_labels() to get labels from a pxelinux configuration
- only overwrite pxelinux settings (prompt, timeout, ...) when pxe is reconfigured
- use network::network and network::tools to get hostname, domain name, IP address, net interface
- move row creation code in set_pxelinux_entry_at_iter() and factorize
- use ensure_is_installed to make sure pxe is installed

1 files changed, 180 insertions, 0 deletions

diff --git a/perl-install/network/pxe.pm b/perl-install/network/pxe.pm
new file mode 100644
index 000000000..90fb30fcc
--- /dev/null
+++ b/perl-install/network/pxe.pm
@@ -0,0 +1,180 @@
+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 { $_->{Depth} == 16 } Xconfig::resolution_and_depth::bios_vga_modes()
+		       );
+our %vga_resolution_to_bios = reverse %vga_bios_to_resolution;
+
+sub read_pxelinux_help() {
+    my %info;
+    foreach (cat_($pxelinux_help_file)) {
+	/^(\w+)\s*:\s*(.*)$/ and $info{$1} = $2;
+    }
+    \%info;
+}
+
+sub read_pxelinux_conf() {
+    my (%conf);
+    my $info = read_pxelinux_help();
+    my $entry = {};
+    foreach (cat_($pxelinux_config_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 ($conf) = @_;
+
+    output($pxelinux_config_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;