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# Copyright (c) 2008 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your suggestions, praise, or complaints to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org/
# -----------------------------------------------------------------------------
# vmware.pm
#    - declares necessary information for the vmware plugin
# -----------------------------------------------------------------------------
package OpenSLX::OSPlugin::vmware;

use strict;
use warnings;

use base qw(OpenSLX::OSPlugin::Base);

use File::Basename;
use File::Path;

use OpenSLX::Basics;
use OpenSLX::Utils;

sub new
{
    my $class = shift;

    my $self = {
        name => 'vmware',
    };

    return bless $self, $class;
}

sub getInfo
{
    my $self = shift;

    return {
        description => unshiftHereDoc(<<'        End-of-Here'),
            !!! descriptive text missing here !!!
        End-of-Here
        precedence => 70,
    };
}

sub getAttrInfo
{
    # returns a hash-ref with information about all attributes supported
    # by this specific plugin
    my $self = shift;

    # This default configuration will be added as attributes to the default
    # system, such that it can be overruled for any specific system by means
    # of slxconfig.
    return {
        # attribute 'active' is mandatory for all plugins
        'vmware::active' => {
            applies_to_systems => 1,
            applies_to_clients => 0,
            description => unshiftHereDoc(<<'            End-of-Here'),
                should the 'vmware'-plugin be executed during boot?
            End-of-Here
            content_regex => qr{^(0|1)$},
            content_descr => '1 means active - 0 means inactive',
            default => '1',
        },
        # attribute 'imagesrc' defines where we can find vmware images
        'vmware::imagessrc' => {
            applies_to_systems => 1,
            applies_to_clients => 1,
            description => unshiftHereDoc(<<'            End-of-Here'),
                Where do we store our vmware images? NFS? Filesystem?
            End-of-Here
            #TODO: check if the input is valid
            #content_regex => qr{^(0|1)$},
            content_descr => 'Allowed values: path or URI',
            default => '',
        },
        # attribute 'bridge' defines if bridged network mode should be
        # switched on
        'vmware::bridge' => {
            applies_to_systems => 1,
            applies_to_clients => 1,
            description => unshiftHereDoc(<<'            End-of-Here'),
                Should the bridging (direct access of the vmware clients
                to the ethernet the host is connected to) be enabled
            End-of-Here
            content_regex => qr{^(0|1)$},
            content_descr => 'Allowed values: 0 or 1',
            default => '1',
        },
        # attribute 'vmnet1' defines if the host connection network mode 
        # should be switched on and NAT should be enabled
        'vmware::vmnet1' => {
            applies_to_systems => 1,
            applies_to_clients => 1,
            description => unshiftHereDoc(<<'            End-of-Here'),
                Format ServerIP/Netprefix without NAT
                Format ServerIP/Netprefix,NAT enables NAT/Masquerading
            End-of-Here
            #TODO: check if the input is valid
            #content_regex => qr{^(0|1)$},
            content_descr => 'Allowed value: IP/Prefix[,NAT]',
            default => '192.168.101.1/24,NAT',
        },
        # attribute 'vmnet8' defines if vmware specific NATed network mode
        # should be switched on
        'vmware::vmnet8' => {
            applies_to_systems => 1,
            applies_to_clients => 1,
            description => unshiftHereDoc(<<'            End-of-Here'),
                Format ServerIP/Netprefix
            End-of-Here
            #TODO: check if the input is valid
            #content_regex => qr{^(0|1)$},
            content_descr => 'Allowed value: IP/Prefix',
            default => '192.168.102.1/24',
        },
        # is to be discussed how to handle this - there is no single set of
        # vmware files!! -> to be moved to vmwarebinaries plugin!?
        # attribute 'binaries' defines whether or not VMware binaries shall
        # be provided (by downloading them).
        #'vmware::binaries' => {
        #    applies_to_vendor_os => 1,
        #    applies_to_systems => 0,
        #    applies_to_clients => 0,
        #    description => unshiftHereDoc(<<'            End-of-Here'),
        #        Shall VMware binaries be downloaded and installed?
        #    End-of-Here
        #    content_regex => qr{^(0|1)$},
        #    content_descr => 'Allowed values: 0 or 1',
        #    default => '0',
        #},
        # attribute 'kind' defines which set of VMware binaries should be 
        # activated ('local' provided with the main installation set).
        'vmware::kind' => {
            applies_to_vendor_os => 0,
            applies_to_systems => 1,
            applies_to_clients => 1,
            description => unshiftHereDoc(<<'            End-of-Here'),
                Which set of VMware binaries to use: installed (local) or provided by an
                other plugin (e.g. Workstation 5.5: vmws5.5, Player 2.0: vmpl2.0, ...)
            End-of-Here
            # only allow the supported once...
            # TODO: modify if we know which of them work
            content_regex => qr{^(local|vmws(5\.5|6.0)|vmpl(1\.0|2\.0))$},
            content_descr => 'Allowed values: local, vmws5.5, vmws6.0, vmpl1.0 ...',
            default => 'local',
        },
    };
}

sub installationPhase
{
    my $self                      = shift;

    $self->{pluginRepositoryPath} = shift;
    $self->{pluginTempPath}       = shift;
    $self->{openslxPath}          = shift;
    $self->{attrs}                = shift;

    my $vmpath = "";
    my $vmbin  = "";

    # get path of files we need to install
    my $pluginFilesPath 
        = "$self->{'openslxPath'}/lib/plugins/$self->{'name'}/files";

    # copy all needed files (TODO: nvram should depend on the "kind" of vmware ...)
    my @files = qw( vmware-init nvram.5.0 runvmware-v2 );
    foreach my $file (@files) {
        copyFile("$pluginFilesPath/$file", $self->{'pluginRepositoryPath'});
    }
    # generate the runlevel scripts for all existing vmware installations,
    # variants because we do not know which on is selected on client level 
    # (code depends on distro/version and vmware location)
    # for local ... other vm-installations (TODO: generate list)
    my @types = qw( local );
    foreach my $type (@types) {
        #  location of the vmware stuff, "local" for directly installed
        # package (more sophisticated assignment might be needed ...)
        if ( $type eq "local" ) {
            $vmpath = "/usr/lib/vmware";
            $vmbin  = "/usr/bin";
        }
        # if provided via another plugin
        # -> why another plugin? Why should another plugin handle files
        #    for vmware? Do we have another plugin which writes files
        #    at the moment?
        #    -> we don't have a .../vmwareXXX/ folder => .../vmware/
        # (TODO: pathname not completely clear ...
        #   -> should be the one of the plugin)
        else {
            #my $vmpath = "/opt/openslx/plugin-repo/vmwareXXX/$type";
            $vmpath = "/opt/openslx/plugin-repo/vmware/$type";
            $vmbin  = "$vmpath/bin";
        }
        my $runlevelScript = "$self->{'pluginRepositoryPath'}/vmware.$type";
        $self->_writeRunlevelScript($vmbin, $runlevelScript);
    }

    # generate links for the user executables vmware and player and a 
    # simplified version of the start script
    @files = qw( vmware vmplayer );
    foreach my $file (@files) {
    # OLTA: this backup strategy is useless if invoked twice, so I have
    #       deactivated it
    #    rename ("/usr/bin/$file", "/usr/bin/$file.slx-bak");
    	# TODO: check if it will really build a link.
	#       somehow i cant see one in stage1
        linkFile("/var/X11R6/bin/$file", "/usr/bin/$file");
        my $script = unshiftHereDoc(<<"        End-of-Here");
            #!/bin/sh
            # written by OpenSLX-plugin 'vmware' in Stage1
            # radically simplified version of the original script $file by VMware Inc.
            PREFIX=$vmpath # depends on the vmware location
            exec "\$PREFIX"'/lib/wrapper-gtk24.sh' \
                 "\$PREFIX"'/lib' \
                 "\$PREFIX"'/bin/vmware' \
                 "\$PREFIX"'/libconf' "\$@"
        End-of-Here
	# TODO: run chmod 755 after creation
        spitFile("$self->{'pluginRepositoryPath'}/$file", $script);
    }
}

sub removalPhase
{
    my $self                 = shift;
    my $pluginRepositoryPath = shift;
    my $pluginTempPath       = shift;
    
    rmtree ( [ $pluginRepositoryPath ] );
    # restore old start scripts - to be discussed
    #my @files = qw( vmware vmplayer );
    #foreach my $file (@files) {
    #    rename ("/usr/bin/$file.slx-bak", "/usr/bin/$file");
    #}
    # TODO: path is distro specific
    #rename ("/etc/init.d/vmware.slx-bak", "/etc/init.d/vmware");
    return;
}

# shouldn't we make it a OpenSLX function and not just a vmware plugin
# function. oh, i forgot, we are talking about the vmware plugin...
sub _writeRunlevelScript
{
    my $self     = shift;
    my $location = shift;
    my $file     = shift;
    
    # $location points to the path where vmware helpers are installed
    # call the distrospecific fillup
    my $runlevelScript = $self->{distro}->fillRunlevelScript($location);

    # OLTA: this backup strategy is useless if invoked twice, so I have
    #       deactivated it
    # rename($file, "${file}.slx-bak") if -e $file;

    spitFile($file, $runlevelScript);
}

1;