#!/usr/bin/perl

# Drakwizard

# Copyright (C) 2002, 2005 Mandrakesoft
#
# Authors: Antoine Ginies <aginies at mandriva.com>
#          Arnaud Desmons <adesmons@mandrakesoft.com>
#          Florent Villard <warly@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::Postfix;
use strict;
use lib qw(/usr/lib/libDrakX); # required for service package

use common;
use MDK::Wizard::Wizcommon;
use MDK::Wizard::Varspaceval;

use Libconf qw(:functions);
use Libconf::Glueconf::Postfix::Main_cf;


my $default_conf = "/etc/postfix/main.cf.dist";
# provide a default postfix configuration file
!-d mkdir("/etc/postfix/") and mkdir("/etc/postfix/");
!-f $default_conf and cp_af("/usr/share/wizards/postfix_wizard/scripts/main.cf.dist.default", $default_conf);
if (!-f "/etc/postfix/main.cf") { cp_af($default_conf, "/etc/postfix/main.cf") }
my $postfix = new Libconf::Glueconf::Postfix::Main_cf({ filename => '/etc/postfix/main.cf',  });
use Data::Dumper;
print Dumper($postfix);

my $wiz = new MDK::Wizard::Wizcommon;
my $wiz_domain_name = $wiz->{net}->network_get("DOMAINNAME");
my $wiz_host_name = $wiz->{net}->network_get("HOSTNAME");
my $wiz_postfix_etc = "/etc/sysconfig/wizard_postfix";

my ($IPSERVER_MASQ) = `/sbin/ip addr show dev eth1` =~ /^\s*inet\s+(\d+\.\d+\.\d+)\.\d+/m;

my $o = {
	 name => N("Postfix wizard"),
	 var => {
		 wiz_myhostname => '',
		 wiz_mydomain => '',
		 wiz_myorigin => '',
		 wiz_inet_interfaces => '',
		 wiz_mydestination => '',
		 wiz_mynetworks => '',

		 wiz_smtpd_helo_required => '',
		 wiz_disable_vrfy_command => '',

		 wiz_maximal_queue_lifetime => '',
		 wiz_message_size_limit => '',
		 wiz_smtpd_banner => '',

		 wiz_debug_peer_level => '',
		 wiz_debugger_command => '',
		 wiz_delay_warning_time => '',

		 wiz_sendmail_path => '',
		 wiz_newaliases_path => '',
		 wiz_mailq_path => '',
		 wiz_setgid_group => '',
		 wiz_manpage_directory => '',
		 wiz_sample_directory => '',
		 wiz_readme_directory => '',
		 wiz_html_directory => '',

		 wiz_masquerade_domains => '',

		 wiz_mail_masquerade => '',
		 wiz_relayhost => '',
		 wiz_relay_domains => '',
		},
	 init => sub {
	   check_sendmail();
	   my $t = any { /$wiz_host_name/ } cat_("/etc/hosts");
	   if ($t == 0) {
	     return 0, N("Error, can't find your hostname in /etc/hosts. Exiting. Please launch drakconnect and choose static IP address.");
	   }
	   1;
	 },
	 needed_rpm => [ 'postfix' ],
	 defaultimage => "$ENV{__WIZ_HOME__}postfix_wizard/images/courrier.png"
	};


my %type = (
             1 => N("Main mail server"),
             2 => N("Relay mail server"),
             );

my %understanding = (
		     1 => N("Newbie - classical options"),
		     2 => N("Expert - advanced options"),
		    );

my @yesorno = qw(yes no); push @yesorno, "";

$o->{pages} = {
	       welcome => {
			   name => N("Internet mail configuration wizard") . "\n\n" . N("This wizard will help you configure a Postfix mail server or a Postfix mail relay."),
			   no_back => 1,
                           pre => sub {
			     $postfix->{relayhost} and $o->{var}{wiz_type} = 2;
                             if (-f $wiz_postfix_etc) {
                               $::in->ask_warn(N("Information"), N("It seems you previously setup a Postfix configuration. This wizard will re-read your old configuration, and show you the Postfix server type you choose"));
                               my $data = cat_($wiz_postfix_etc);
                               # detect old Postfix type
			       my ($old_type) = $data =~ /type=(\d)/;
                               $o->{var}{wiz_type} = chomp_($old_type);
                             } else { $o->{var}{wiz_type} = 1 }
                           },
                           data => [
                                    { label => N("What do you want to do:"), val => \$o->{var}{wiz_type}, list => [ keys %type ], format => sub { $type{$_[0]} } },
                                   ],
			   next => 'global_config',
			  },
	       understanding => {
				 name => N('Now I need to know your understanding in Postfix server configuration'),
				 data => [
					  { label => N("What kind of user are you:"), val => \$o->{var}{wiz_understanding}, list => [ keys %understanding ], format => sub { $understanding{$_[0]} } },
					 ],
				 no_back => 1,
				 next => 'global_config',
				},
	       global_config => {
				 name => N('Global postfix configuration'),
				 pre => sub {
				   $o->{var}{wiz_smtpd_banner} ||= $postfix->{smtpd_banner};
				   $o->{var}{wiz_myhostname} ||= $postfix->{myhostname} or $o->{var}{wiz_myhostname} = $wiz_host_name;
				   $o->{var}{wiz_mydomain} ||= $postfix->{mydomain} or $o->{var}{wiz_mydomain} = $wiz_domain_name;
				   $o->{var}{wiz_myorigin} ||= $postfix->{myorigin};
				 },
				 post => sub {
				   if ($o->{var}{wiz_type} == 1) {
				     return 'main_server' ;
				   } else {
				     return 'relay_server';
				   }
				 },
				 data => [
					  { label => N('Smtpd banner:'), val => \$o->{var}{wiz_smtpd_banner}, help => 'You MUST specify $myhostname at the start of the text. That is an RFC requirement. ie: $myhostname ESMTP $mail_name ($mail_version) (Mandriva Linux)' },
					  { label => N('Hostname:'), val => \$o->{var}{wiz_myhostname}, help => N('The myhostname parameter specifies the internet hostname of this  mail system. ie: myhostname = myhostname') },
					  { label => N('Domain:'), val => \$o->{var}{wiz_mydomain}, help => N('The mydomain parameter specifies the local internet domain name. ie: mydomain = mydomain') },
					  { label => N('Origin:'), val => \$o->{var}{wiz_myorigin}, help => N('The myorigin parameter specifies the domain that locally-posted mail appears to come from. ie: myorigin = $myhostname') },
					 ],
				 complete => sub {
				   if (!$o->{var}{wiz_smtpd_banner}) {
				     $::in->ask_warn(N('Error'), N('Please provide an Smtpd banner.')); return 1; }
				   if (!$o->{var}{wiz_myhostname}) {
				     $::in->ask_warn(N('Error'), N('You must provide an internet hostname of this mail system.')); return 1; }
				   if (!$o->{var}{wiz_mydomain}) {
				     $::in->ask_warn(N('Error'), N('You must specify the local internet domain name.')); return 1; }
				 },
				},
	       main_server => {
			       name => N('Main Postfix server') . "\n\n" . N('helo_required: require that a remote SMTP client introduces itself at the beginning of an SMTP session with the HELO or EHLO command.') . "\n" . N('Verify command: this stops some techniques used to harvest email addresses.'),
				pre => sub {
				  $o->{var}{wiz_smtpd_helo_required} ||= $postfix->{smtpd_helo_required};
				  $o->{var}{wiz_disable_vrfy_command} ||= $postfix->{disable_vrfy_command};
				  $o->{var}{wiz_masquerade_domains} ||=$postfix->{masquerade_domains};
				},
			       data => [
					{ label => N('helo required:'), val => \$o->{var}{wiz_smtpd_helo_required}, fixed_list => \@yesorno },
					{ label => N('Disable verify command:'), val => \$o->{var}{wiz_disable_vrfy_command}, fixed_list => \@yesorno },
					{ label => N('Masquerade domains'), val => \$o->{var}{wiz_masquerade_domains}, help => N('This should be chosen consistently with the address you use for incoming mail. Address masquerading is a method to hide all hosts inside a domain behind their mail gateway, and to make it appear as if the mail comes from the gateway itself, instead of from individual machines.') },
				       ],
			       complete => sub {
				 if ($o->{var}{wiz_masquerade_domains} !~ /\w+\.\w+\s\w+\.\w+$/ and $o->{var}{wiz_masquerade_domains}) {
				   $::in->ask_warn(N("Error"), N("Masquerade should be a valid domain name such as \"domain_to_masquerade.com with_this_domain.com\"!"));
				   return 1;
				 } else { return 0; };
			       },
			       next => 'message_config',
			      },
	       relay_server => {
				name => N('Relay server') . N('Relay domains: what destination domains (and subdomains thereof) this system will relay mail to.') . "\n" ,
				pre => sub {
				  $o->{var}{wiz_relayhost} ||= $postfix->{relayhost};
				  $postfix->{relay_domains} and $o->{var}{wiz_relay_domains} = $postfix->{relay_domains} or $o->{var}{wiz_relay_domains} = $wiz_domain_name;
				},
			       data => [
					{ label => N('Relay host:'), val => \$o->{var}{wiz_relayhost}, help => 'The default host to send non-local mail to when no entry is matched in the optional transport(5) table. ie: relayhost = [gateway.my.domain], relayhost = uucphost, relayhost = [an.ip.add.ress].' },
					{ label => N('Relay domains:'), val => \$o->{var}{wiz_relay_domains}, help => N('What destination domains (and subdomains thereof) this system will relay mail to. ie: mydomain.com') },
				       ],
				complete => sub { if (!$o->{var}{wiz_relayhost}) { $::in->ask_warn(N('Error'), N('Need a relayhost.')); return 1; } else { return 0; }; },
				next => 'message_config',
			       },
	       network_config => {
				  name => N('Network config'),
				  pre => sub {
				    $postfix->{inet_interfaces} and $o->{var}{wiz_inet_interfaces} = $postfix->{inet_interfaces} or $o->{var}{wiz_inet_interfaces} = 'all';
				    $postfix->{mydestination} and $o->{var}{wiz_mydestination} = $postfix->{mydestination} or $o->{var}{wiz_mydestination} = "\$myhostname, localhost.\$mydomain";
				    my $mynetworks;
				    $IPSERVER_MASQ and $mynetworks = "127.0.0.0/32, " . $IPSERVER_MASQ . ".0/24" or $mynetworks = "127.0.0.0/32";
				    $postfix->{mynetworks} and $o->{var}{wiz_mynetworks} = $postfix->{mynetworks} or $o->{var}{wiz_mynetworks} = $mynetworks;
				    $o->{var}{wiz_mynetworks_style} ||= $postfix->{mynetworks_style};
				  },
				  data => [
					   { label => N('inet interfaces:'), val => \$o->{var}{wiz_inet_interfaces}, help => N('The network interface addresses that this mail system receives mail on. By default, the software claims all active interfaces on the machine. ie: all') },
					   { label => N('my destination:'), val => \$o->{var}{wiz_mydestination}, help => N('The list of domains that are delivered via the $local_transport mail delivery transport. ie: $myhostname, localhost.$mydomain, /etc/postfix/destinations') },
					   { label => N('my networks:'), val => \$o->{var}{wiz_mynetworks}, help => N('The list of trusted SMTP clients. ie: 127.0.0.0/32, 192.168.1.0/24') },
					  ],
				  complete => sub { if (!$o->{var}{wiz_mynetworks}) { $::in->ask_warn(N('Error'), N('This is the list of trusted SMTP clients. For security reason, please provide one. ie: 127.0.0.0/32, 192.168.1.0/24')); return 1; } else { return 0; }; },
				  post => sub {
				    if ($o->{var}{wiz_type} == 1) {
				      return 'summary_main' ;
				    } else {
				      return 'summary_relay';
				    }
				  }
				 },
	       message_config => {
				  name => N('Message options') . N('Various options to configure your message queue, delay, size...'),
				  pre => sub {
				    $postfix->{maximal_queue_lifetime} and $o->{var}{wiz_maximal_queue_lifetime} = $postfix->{maximal_queue_lifetime} or $o->{var}{wiz_maximal_queue_lifetime} = "5d";
				    $postfix->{message_size_limit} and $o->{var}{wiz_message_size_limit} = $postfix->{message_size_limit} or $o->{var}{wiz_message_size_limit} = "5000";
				    $o->{var}{wiz_delay_warning_time} ||= $postfix->{delay_warning_time} or $postfix->{delay_warning_time} = "2h";
				  },
				  data => [
					   { label => N('Maximal queue life:'), val => \$o->{var}{wiz_maximal_queue_lifetime}, help => N('Determines how long a message should stay in the queue before it is deemed undeliverable. The default is five days (5d)') },
					   { label => N('Message size limit:'), val => \$o->{var}{wiz_message_size_limit}, help => N('Maximum size of a message in Kb') },
					   { label => N('Delay warning time:'), val => \$o->{var}{wiz_delay_warning_time}, help => N('The delay_warning_time specifies after how many hours a warning is sent that mail has not yet been delivered.') },
					  ],
				  next => 'network_config',
				 },
	       error_sendmail => {
				  name => N("Error, sendmail is installed. Please remove it before installing or configuring Postfix"),
				  no_back => 1,
				  next => 0,
				  end => 1,
				 },
	       summary_relay => {
			   name =>  N("Configuring your relay mail server") . "\n\n" . N("The wizard collected the following parameters needed to configure your relay mail server:") . "\n\n" . N("To accept these values, and configure your server, click the next button or use the back button to correct them."),
			   data => [
				    { label => N('Relay host:'), fixed_val => \$o->{var}{wiz_relayhost} },
				    { label => N('Relay domains:'), fixed_val => \$o->{var}{wiz_relay_domains} },
				   ],
			   post => \&do_it_relay_server,
			   next => 'end'
			  },
	       summary_main => {
				name =>  N("The wizard will now configure your Postfix mail server."),
				data => [
					 { label => N('inet interfaces:'), fixed_val => \$o->{var}{wiz_inet_interfaces} },
					 { label => N('my destination:'), fixed_val => \$o->{var}{wiz_mydestination} },
					 { label => N('my networks:'), fixed_val => \$o->{var}{wiz_mynetworks} },
					],
				post => \&do_it_main_server,
				next => 'end'
			     },
	       end => {
		       name => N("Congratulations") . "\n\n" . N("The wizard successfully configured your Postfix Mail server."),
		       post => sub {
			 store_postfix_type($o->{var}{wiz_type});
		       },
		       no_back => 1,
		       end => 1,
		       next => 0
		      },
	       error_end => {
			     name => N("Failed"),
                             data => [ { label => N("Please relaunch drakwizard, and try to change some parameters.") } ],
                             no_back => 1,
                             end => 1,
                             next => 0,
                            },
};

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

sub check_sendmail {
  my $in = 'interactive'->vnew('su', 'Check sendmail');
  my $w = $in->wait_message(N("Postfix Server"), N("removing Sendmail to avoid conflict...."));
  my $test = any { /sendmail/ } system("rpm -q sendmail");
  !$test or return 'error_sendmail';
  undef $w;
}

sub postfix_options {
  # global
  $o->{var}{wiz_myhostname} and $postfix->{myhostname} = $o->{var}{wiz_myhostname};
  $o->{var}{wiz_mydomain} and $postfix->{mydomain} = $o->{var}{wiz_mydomain};
  $o->{var}{wiz_myorigin} and $postfix->{myorigin} = $o->{var}{wiz_myorigin};
  $o->{var}{wiz_inet_interfaces} and $postfix->{inet_interfaces} = $o->{var}{wiz_inet_interfaces};
  $o->{var}{wiz_mydestination} and $postfix->{mydestination} = $o->{var}{wiz_mydestination};
  $o->{var}{wiz_mynetworks} and $postfix->{mynetworks} = $o->{var}{wiz_mynetworks};
  $o->{var}{wiz_smtpd_banner} and $postfix->{smtpd_banner} = $o->{var}{wiz_smtpd_banner};

  # not defined but wanted
  $postfix->{debug_peer_level} or $postfix->{debug_peer_level} = "1";
  #$postfix->{debugger_command} or $postfix->{debugger_command} = "PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin xxgdb $daemon_directory/$process_name $process_id & sleep 5";
  $postfix->{sendmail_path} or $postfix->{sendmail_path} = "/usr/sbin/sendmail.postfix";
  $postfix->{newaliases_path} or $postfix->{newaliases_path} = "/usr/bin/newaliases.postfix";
  $postfix->{mailq_path} or $postfix->{mailq_path} = "/usr/bin/mailq.postfix";
  $postfix->{setgid_group} or $postfix->{setgid_group} = "postdrop";
  $postfix->{alias_maps} or $postfix->{alias_maps} = "hash:/etc/postfix/aliases";
  $postfix->{mail_spool_directory} or $postfix->{mail_spool_directory} = "/var/spool/mail";
  $postfix->{alias_database} or $postfix->{alias_database} = "hash:/etc/postfix/aliases";
  $postfix->{command_directory} or $postfix->{command_directory} = "/usr/sbin";
  $postfix->{queue_directory} or $postfix->{queue_directory} = "/var/spool/postfix";
  $postfix->{daemon_directory} or $postfix->{daemon_directory} = "/usr/lib/postfix";
  $postfix->{mail_owner} or $postfix->{mail_owner} = "postfix";
}

sub store_postfix_type {
# write config file to store Postfix type
  my ($type) = @_;
  output($wiz_postfix_etc, <<EOF);
# 1 = Main server
# 2 = Relay
# 3 = mail server + fetchmail
EOF

  append_to_file($wiz_postfix_etc, "type=$type\n");
}

sub save_config {
  my @conf = qw(/etc/postfix/aliases
		  /etc/postfix/canonical
		  /etc/postfix/main.cf
		  /etc/postfix/master.cf
		  /etc/postfix/virtual);
    foreach (@conf) {
        -f $_ and MDK::Common::cp_af($_, $_.".orig");
    }
}

sub cmd_needed {
  system("/usr/sbin/postmap -r -w /etc/postfix/canonical");
  system("/usr/sbin/postmap /etc/postfix/virtual");
  system("/usr/sbin/postalias /etc/postfix/aliases");
  system("/usr/sbin/postfix check");
  $postfix->write_conf("/etc/postfix/main.cf");
  require services;
  if (services::is_service_running('postfix')) {
    services::restart('postfix');
  } else {
    services::start('postfix');
  }
}

sub do_it_relay_server {
  $::testing and return;
  my $in = 'interactive'->vnew('su', 'postfix configuration');
  my $w = $in->wait_message(N("Postfix Server"), N("Configuring your Postfix server....."));
  save_config();

  postfix_options();
  $o->{var}{wiz_relayhost} and $postfix->{relayhost} = $o->{var}{wiz_relayhost};
  $o->{var}{wiz_relay_domains} and $postfix->{relay_domains} = $o->{var}{wiz_relay_domains};

  # remove server unwanted options
  $postfix->{smtpd_helo_required} and delete $postfix->{smtpd_helo_required};
  $postfix->{disable_vrfy_command} and delete $postfix->{disable_vrfy_command};
  $postfix->{masquerade_domains} and delete $postfix->{masquerade_domains};

  cmd_needed();
  undef $w;
  check_started('master');
}

sub do_it_main_server {
  $::testing and return;
  my $in = 'interactive'->vnew('su', 'postfix configuration');
  my $w = $in->wait_message(N("Postfix Server"), N("Configuring your Postfix server....."));
  save_config();

  postfix_options();
  $o->{var}{wiz_smtpd_helo_required} and $postfix->{smtpd_helo_required} = $o->{vawiz_smtpd_helo_required};
  $o->{var}{wiz_disable_vrfy_command} and $postfix->{disable_vrfy_command} = $o->{var}{wiz_disable_vrfy_command};
  $o->{var}{wiz_maximal_queue_lifetime} and $postfix->{maximal_queue_lifetime} = $o->{var}{wiz_maximal_queue_lifetime};
  $o->{var}{wiz_message_size_limit} and $postfix->{message_size_limit} = $o->{var}{wiz_message_size_limit};
  $o->{var}{wiz_masquerade_domains} and $postfix->{masquerade_domains} = $o->{var}{wiz_masquerade_domains};
  $o->{var}{wiz_delay_warning_time} and $postfix->{delay_warning_time} = $o->{var}{wiz_delay_warning_time};

  # remove relay options
  $postfix->{relayhost} and delete $postfix->{relayhost};
  $postfix->{relay_domains} and delete $postfix->{relay_domains};

  cmd_needed();
  undef $w;
  check_started('master');
}

1;