#/usr/bin/perl -w
# version 0.3
#
# Copyright (C) 2002,2003 Mandrakesoft
#
# Author: aginies _at_ mandrakesoft.com
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# 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.
#

package MDK::Wizard::Nisautofs;
use lib qw(/usr/lib/libDrakX);
use strict;
#use standalone; 
use common;
use services;
#use MDK::Wizard::Varspaceval;
use MDK::Wizard::Wizcommon;


# test root capa
my $wiz = new MDK::Wizard::Wizcommon;

#my $NISDOMAIN = $wiz->{net}->network_get("NISDOMAIN");
my $NISDOMAIN = chomp_(`dnsdomainname`);
my @HOST = split('\.', $wiz->{net}->network_get("HOSTNAME"));
my $HOST = @HOST[0]; # just need basename and not full qualified computer hostname (with domainaname)
my $NIS_DIRMAKEFILE = "/var/yp/";
my $HOMENIS = "/home/nis";
my $NETWORKFILE = "/etc/sysconfig/network";
my $NFSEXPORTS = "/etc/exports";
my $AUTOMASTER = "/etc/auto.master";
my $AUTOHOME = "/etc/auto.home";
my $YPCONF = "/etc/yp.conf";

my $o = {
	 name => 'NIS Configuration Wizard',
	 var => {
		 NISDOMAIN => chomp_($NISDOMAIN),
		 NISSERVER => chomp_($HOST),
		 NIS_DIRMAKEFILE => $NIS_DIRMAKEFILE,
		 HOMENIS => $HOMENIS,
		 NETWORKFILE => $NETWORKFILE,
		 NFSEXPORTS => $NFSEXPORTS,
		 AUTOMASTER => $AUTOMASTER,
		 AUTOHOME => $AUTOHOME,
		},
	 needed_rpm => [ 'ypbind', 'nfs-utils', 'yp-tools', 'nfs-utils-clients' ],
	 defaultimage => "$ENV{__WIZ_HOME__}/nisautofs_wizard/images/nisautofs.png",
	 init => sub {
	   if (member($NISDOMAIN, qw(localdomain (none)))) {
             return 0, N("You need to readjust your NIS domainname. For a NIS server you need a correct NIS domainname, not equal to localdomain or none.")
           }
           1
	 },
	};

my %level = (
             1 => N("NIS server with autofs map"),
             2 => N("NIS client"),
             );

$o->{pages} = {
	       welcome => {
			   name => N("NIS server with autofs map") . "\n\n" . N("Setup a NIS server with autofs map, auto.home and auto.master files.") . "\n\n" . N("Users automatically mount their home directory from server, when they log on a NIS client computer network."),
			   no_back => 1,
			   pre => sub { $o->{var}{wiz_level} ||= 1 },
			   post => sub { if ($o->{var}{wiz_level} == 2) {
			     return 'nis_client'
			   }
				       },
			   data => [
				    { label => N("What do you want to do?"), val => \$o->{var}{wiz_level}, list => [ keys %level ], format => sub { $level{$_[0]} } },
				   ],
			   next => 'nis_server',
			  },
	       nis_client => {
			      name => N("Configure computer to be a NIS client") . "\n\n" . N("You just have to put nisdomain and nisserver."),
			      data => [
				       { label => N("NIS server:"), val => \$o->{var}{NISSERVER} },
				       { label => N("NIS domain:"), val => \$o->{var}{NISDOMAIN} },
				      ],
				  next => 'summaryclient',
			     },
	       nis_server => {
			      name => N("NIS server with autofs map") . "\n\n" . N("A NIS server is useful to create user, hostname database. The wizard builds autofs map, so it will provide the capabilities for NIS user to automount their home directory on a NIS client computer.") . "\n\n" . N("NIS server: name of your computer.")  . "\n" . N("Home NIS: home base directory for users on NIS server. This directory will be exported through NFS server.") . "\n" . N("NIS domain: NIS domain to use (generally same as your DNS domain name)."),
			      data => [
				       { label => N("NIS server:"), val => $HOST },
				       { label => N("Home NIS:"), val => \$o->{var}{HOMENIS} },
				       { label => N("NIS domainname:"), val => \$o->{var}{NISDOMAIN} },
				      ],
			      post => \&test_set,
			      next => 'summaryserver',
			     },
	       summaryserver => {
				 name => N("The wizard will set your NIS server with autofs map"),
				 data => [
					  { label => N("NIS server:"), fixed_val => \$HOST },
					  { label => N("Home NIS:"), fixed_val => \$o->{var}{HOMENIS} },
					  { label => N("NIS domainname:"), fixed_val => \$o->{var}{NISDOMAIN} },
					  { label => N("NIS directory:"), fixed_val => \$o->{var}{NIS_DIRMAKEFILE} },
#					  { label => N("Network file:"), fixed_val => \$o->{var}{NETWORKFILE} },
#					  { label => N("NFS exports:"), fixed_val => \$o->{var}{NFSEXPORTS} },
#					  { label => N("Auto master:"), fixed_val => \$o->{var}{AUTOMASTER} },
#					  { label => N("Auto home:"), fixed_val => \$o->{var}{AUTOHOME} },
					 ],
				 post => \&do_it_server,
				     next => 'endserver',
				},
	       summaryclient => {
				 name => N("The YPBIND daemon finds the server for NIS domains and maintains the NIS binding information.") . "\n\n" . N("NIS server: hostname of the NIS server.") . "\n" . N("NIS domainname: name of NIS domain."),
				 data => [
					  { label => N("NIS server:"), fixed_val => \$o->{var}{NISSERVER} },
					  { label => N("NIS domainname:"), fixed_val => \$o->{var}{NISDOMAIN} },
					 ],
				 post => \&do_it_client,
				 next => 'endclient',
				},
	       error_homedir => {
				 name => N("Error: should be a directory."),
				 next => 'nis_server',
				},
	       error_nisd => {
			      name => N("Error: nisdomainname should not be 'none' or 'localdomain'.") . "\n\n" . N("Please adjust it."),
			      end => 1,
			      next => 0,
			     },
	       endclient => {
			     name => N("Congratulations"),
			     data => [ { label => N("The wizard successfully configured your machine to be a NIS client.") } ],
			     no_back => 1,
			     end => 1,
			     next => 0
			    },
	       endserver => {
			     name => N("Congratulations"),
			     data => [ { label => N("The wizard successfully configured your machine to be a NIS server with autofs map.") } ],
			     no_back => 1,
			     end => 1,
			     next => 0
			    },
	       error_end => {
			     name => N("Failed"),
                             data => [ { label => N("Relaunch drakwizard, and try to change some parameters.") } ],
                             no_back => 1,
                             end => 1,
                             next => 0,
                            },
	      };


sub test_set {
  if (member($o->{var}{NISDOMAIN}, qw(localdomain (none)))) { return 'error_nisd' }
  !-d $o->{var}{HOMENIS} or return 'error_dir';
  !-d $o->{var}{NIS_DIRMAKEFILE} or return 'error_dir';
}
# update /etc/sysconfig/network
sub update_network {
  save_config($NETWORKFILE);
  if (any { /NISDOMAIN/ } cat_($NETWORKFILE)) {
    substInFile { s/NISDOMAIN.*/NISDOMAIN=$o->{var}{NISDOMAIN}/g } $NETWORKFILE;
  } else {
    append_to_file($NETWORKFILE, "NISDOMAIN=$o->{var}{NISDOMAIN}\n");
  }
}

# Setting nisdomainname
sub set_nisdomain {
  system("nisdomainname $o->{var}{NISDOMAIN}");
}


sub nfs_home_nis {
  # test directory
  $HOMENIS = $o->{var}{HOMENIS};
  if (-d $HOMENIS) {
    print " - $HOMENIS directory exist\n";
  } else {
    print " - Creating $HOMENIS directory\n";
    mkdir_p($HOMENIS);
  }

  # check nis home
  if (any { /$HOMENIS/ } cat_($NFSEXPORTS)) {
    print " - " . $NFSEXPORTS . " ready\n";
  } else {
    print " - Adjusting " . $NFSEXPORTS . "\n";
    append_to_file($NFSEXPORTS, "$HOMENIS 	*(async,rw,no_root_squash)\n");
  }
}

# configure /etc/auto.*
sub configure_auto {
  save_config($AUTOMASTER);
  my $nisserver = chomp_($o->{var}{NISSERVER});
  output($AUTOMASTER, <<EOF);
$HOMENIS auto.home     --timeout=60
EOF

  save_config($AUTOHOME);
  output($AUTOHOME, <<EOF);
* -rw,nfs,soft,intr,nosuid,rsize=8192,wsize=8192       $nisserver:$HOMENIS/&
EOF
}

sub adjust_makefile {
# Makefile parameter
  print " - Updating " . $NIS_DIRMAKEFILE . " to add autofs\n";
  mkdir_p('/etc/mail');
  system('touch /etc/mail/aliases');
  substInFile {
    s!^ALIASES!#ALIASES=/etc/aliases!g;
    s/^all.*/all:  passwd group hosts rpc services netid protocols auto.master auto.home/g;
  } $NIS_DIRMAKEFILE . '/Makefile';
}

# create yp base
sub make_yp {
  system("make -C $NIS_DIRMAKEFILE");
}

sub needed_service {
  my ($service) = @_;
  if (services::is_service_running($service)) {
    services::restart($service)
    } else { services::start($service) }
}

sub get_nis_users {
  my @unwanted = qw(install maui nobody mpi);
  my @users;
  local *PASS;
  open(PASS, "ypcat passwd|") or die " cant exec ypcat passwd!";
  while (<PASS>) {
    my ($login) = split(':');
    if (!member($login, @unwanted)) {
      push(@users, $login);
    }
  }
  close(PASS);
  [ @users ];
}

sub update_yp {
  my ($nd, $yps) = @_;
  save_config($YPCONF);
  output($YPCONF, <<EOF);
# /etc/yp.conf - ypbind configuration file
# domain NISDOMAIN server HOSTNAME
# Use server HOSTNAME for the domain NISDOMAIN.
#domain NISDOMAIN broadcast
#       Use  broadcast  on  the local net for domain NISDOMAIN
#
#ypserver HOSTNAME
#       Use server HOSTNAME for the  local  domain.  The
#       IP-address of server must be listed in /etc/hosts.
#
domain $nd server $yps
EOF
}

sub test_autofile {
    map { if (-e $_) { rm_rf($_) }; $_ } $AUTOHOME, $AUTOMASTER;
}

sub save_config {
  my ($old) = @_;
  my $DATE = chomp_(`date +%d-%m-20%y`);
  if (-f $old) {
    cp_af($old, $old . '.' . $DATE);
  }
  return($old . '.' . $DATE);
}

sub update_network_nisdomain {
  my ($nd) = @_;
  my $nf = cluster_commonconf::system_network()->{NETWORKFILE};
  my %conf = getVarsFromSh($nf);
  save_config($nf);
  setVarsInSh($nf, { %conf, NISDOMAIN => $nd });
}

sub update_nsswitch {
  substInFile {
    s/automount:.*/automount:  nis nisplus files/g;
    s/hosts.*/hosts:      dns nis files/;
  } '/etc/nsswitch.conf';
}

sub uninstall_rpm {
    my ($rpm) = @_;
    system("urpme $rpm --auto");# if (system('/bin/rpm', '>/dev/null', '-q', $rpm));
}

sub do_it_server {
    return if $::testing;
    my $in = 'interactive'->vnew('su', 'nisautofsconfig');
    my $w = $in->wait_message(N("NIS with Autofs map"), N("Configuring your system to be a NIS server with Autofs map..."));
#    system("urpme --auto autofs") if (system("/bin/rpm -q autofs >/dev/null"));
    uninstall_rpm('autofs');
    system("urpmi --auto ypserv");
    needed_service('ypserv');
    # configure autofs to fit nis
    configure_auto();
    # set correct nis
    set_nisdomain();
    # create all make file needed
    adjust_makefile();
    make_yp();
    # update client conf file (also on server)
    update_yp(chomp_($o->{var}{NISDOMAIN}), chomp_($HOST));
    # update conf file
    update_network();
    # update nsswitch.conf
    update_nsswitch();
    # update nfs to fit nis
    nfs_home_nis();
    # restart all needed services
    needed_service($_) foreach qw(ypserv nfs);
    undef $w;
    check_started($_) foreach qw(ypserv nfsd);
}

sub do_it_client {
    return if $::testing;
    my $in = 'interactive'->vnew('su', 'nisautofsclient');
    my $w = $in->wait_message(N("NIS client"), N("Configuring your system as NIS client ..."));
    uninstall_rpm('ypserv');
    system("urpmi --auto autofs");
    test_autofile();
    # set correct nis
    set_nisdomain();
    # update client conf file (also on server)
    update_yp(chomp_($o->{var}{NISDOMAIN}), chomp_($o->{var}{NISSERVER}));
    # update conf file
    update_network();
    # update nsswitch.conf
    Substinfile {
      s|automount:.*|automount: files nisplus nis|;
    } "/etc/nsswitch.conf";
    needed_service($_) foreach qw(ypbind autofs);
    undef $w;
    check_started($_) foreach qw(ypbind autofs);
}

sub new {
    my ($class) = @_;
    bless {
            o   => $o,
       }, $class;
}

1;