# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
package xCAT_plugin::rhel;
use Storable qw(dclone);
use Sys::Syslog;
use xCAT::Table;
use xCAT::Template;
use xCAT::Postage;
use Data::Dumper;
use Getopt::Long;
Getopt::Long::Configure("bundling");
Getopt::Long::Configure("pass_through");
use File::Path;
use File::Copy;

my %discids = (
  "1170973598.629055" => "rhelc5",
  "1170978545.752040" => "rhels5"
  );

sub handled_commands {
  return {
    copycd => "rhel",
    mkinstall => "nodetype:os=rh.*"
  }
}
  
sub process_request {
  my $request = shift;
  my $callback = shift;
  my $doreq = shift;
  my $distname = undef;
  my $arch = undef;
  my $path = undef;
  if ($request->{command}->[0] eq 'copycd') { 
    return copycd($request,$callback,$doreq);
  } elsif ($request->{command}->[0] eq 'mkinstall') {
    return mkinstall($request,$callback,$doreq);
  }
}

sub mkinstall {
  my $request = shift;
  my $callback = shift;
  my $doreq = shift;
  my @nodes = @{$request->{node}};
  my $node;
  my $ostab = xCAT::Table->new('nodetype');
  my %doneimgs;
  foreach $node (@nodes) {
    my $osinst;
    my $ent = $ostab->getNodeAttribs($node,['profile','os','arch']);
    unless ($ent->{os} and $ent->{arch} and $ent->{profile}) {
      $callback->({error=>["No profile defined in nodetype for $node"],errorcode=>[1]});
      next; #No profile
    }
    my $os = $ent->{os};
    my $arch = $ent->{arch};
    my $profile = $ent->{profile};
    unless (-r "/usr/share/xcat/install/rh/".$ent->{profile}.".tmpl") {
      $callback->({error=>["No kickstart template exists for ".$ent->{profile}],errorcode=>[1]});
      next;
    }
    #Call the Template class to do substitution to produce a kickstart file in the autoinst dir
    xCAT::Template->subvars("/usr/share/xcat/install/rh/".$ent->{profile}.".tmpl","/install/autoinst/".$node,$node);
    mkpath "/install/postscripts/";
    xCAT::Postage->writescript($node,"/install/postscripts/".$node);
    if (-r "/install/$os/$arch/images/pxeboot/vmlinuz" 
      and -r  "/install/$os/$arch/images/pxeboot/initrd.img") {
      unless ($doneimgs{"$os|$arch"}) {
      #TODO: driver slipstream, targetted for network.
        mkpath("/tftpboot/xcat/$os/$arch");
        copy("/install/$os/$arch/images/pxeboot/vmlinuz","/tftpboot/xcat/$os/$arch/");
        copy("/install/$os/$arch/images/pxeboot/initrd.img","/tftpboot/xcat/$os/$arch/");
        $doneimgs{"$os|$arch"}=1;
      }
      #We have a shot...
      my $restab = xCAT::Table->new('noderes');
      my $ent = $restab->getNodeAttribs($node,['nfsserver','serialport','primarynic','installnic']);
      my $hmtab = xCAT::Table->new('nodehm');
      my $sent = $hmtab->getNodeAttribs($node,['serialspeed','serialflow']);
      unless ($ent and $ent->{nfsserver}) {
        $callback->({error=>["No noderes.nfsserver defined for ".$ent->{profile}],errorcode=>[1]});
        next;
      }
      my $kcmdline="nofb utf8 ks=http://".$ent->{nfsserver}."/install/autoinst/".$node;
      if ($ent->{installnic}) {
        $kcmdline.=" ksdevice=".$ent->{installnic};
      } elsif ($ent->{primarynic}) { 
        $kcmdline.=" ksdevice=".$ent->{primarynic};
      } else {
        $kcmdline .= " ksdevice=eth0";
      }

      #TODO: dd=<url> for driver disks
      if (defined $ent->{serialport}) {
        unless ($sent->{serialspeed}) {
          $callback->({error=>["serialport defined, but no serialspeed for $node in nodehm table"],errorcode=>[1]});
          next;
        }
        $kcmdline.=" console=ttyS".$ent->{serialport}.",".$sent->{serialspeed};
        if ($sent->{serialflow} =~ /(ctsrts|cts|hard)/) {
          $kcmdline .= "n8r";
        }
      }
      $kcmdline .= " noipv6";
      
      $restab->setNodeAttribs($node,{
        kernel=>"xcat/$os/$arch/vmlinuz",
        initrd=>"xcat/$os/$arch/initrd.img",
        kcmdline=>$kcmdline
      });
    } else {
        $callback->({error=>["Install image not found in /install/$os/$arch"],errorcode=>[1]});
    }
  }
}

sub copycd {
  my $request = shift;
  my $callback = shift;
  my $doreq = shift;
  my $installroot;
  my $sitetab = xCAT::Table->new('site');
  if ($sitetab) { 
    (my $ref) = $sitetab->getAttribs({key=>installdir},value);
    print Dumper($ref);
    if ($ref and $ref->{value}) {
      $installroot = $ref->{value};
    }
  }

  @ARGV= @{$request->{arg}};
  GetOptions(
    'n=s' => \$distname,
    'a=s' => \$arch,
    'p=s' => \$path
  );
  unless ($path) {
    #this plugin needs $path...
    return;
  }
  if ($distname and $distname !~ /^rh/) {
    #If they say to call it something other than RH, give up?
    return;
  }
  unless (-r $path."/.discinfo") {
    return;
  }
  my $dinfo;
  open($dinfo,$path."/.discinfo");
  my $did = <$dinfo>;
  chomp($did);
  my $desc = <$dinfo>;
  chomp($desc);
  my $darch = <$dinfo>;
  chomp($darch);
  if ($darch and $darch =~ /i.86/) {
    $darch = "x86";
  }
  close($dinfo);
  if ($desc =~ /^Red Hat Enterprise Linux Client 5$/) {
    unless ($distname) {
      $distname = "rhelc5";
    }
  } elsif ($desc =~ /^Red Hat Enterprise Linux Server 5$/) {
    unless ($distname) {
      $distname = "rhels5";
    }
  }

  print $desc;
  unless ($distname) {
    return; #Do nothing, not ours..
  }
  if ($darch) {
    unless ($arch) { 
      $arch = $darch;
    }
    if ($arch and $arch ne $darch) {
      $callback->({error=>"Requested RedHat architecture $arch, but media is $darch"});
      return;
    }
  }
  %{$request} = (); #clear request we've got it.

  $callback->({data=>"Copying media to $installroot/$distname/$arch/"});
  my $omask=umask 0022;
  mkpath("$installroot/$distname/$arch");
  umask $omask;
  my $rc = system("cd $path; find . | cpio -dump $installroot/$distname/$arch");
  chmod 0755,"$installroot/$distname/$arch";
  if ($rc != 0) {
    $callback->({error=>"Media copy operation failed, status $rc"});
  } else {
    $callback->({data=>"Media copy operation successful"});
  }
}

1;