#!/usr/bin/perl

# Drakwizard

# Copyright (C) 2002, 2005 Mandrakesoft
#
# Authors: 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::Apache;
use strict;

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

my $wiz = new MDK::Wizard::Wizcommon;
my $in = interactive->vnew;

my $file = "/etc/httpd/conf/httpd.conf";
my $root;

my $config;
my $o = {
	 name => N("Web wizard"),
	 var => {
		 web_internal => '',
		 web_external => '',
		 user_mod => '',
		 user_dir => '',
		 shared_dir => ''
		},
	 needed_rpm => [ 'apache-mpm-prefork', 'apache-mod_userdir' ],
	 defaultimage => "/usr/share/mcc/themes/default/web_server-mdk.png",
	 init => sub {
	   if (-f $file) {
	     open my $FH, $file or die "$! ($file)";
	     local $_;
	     while (<$FH>) {
	       if (/^\s*#?\s*DocumentRoot\s+(.*)/) {
		 close($FH);
		 $root = $1;
		 $root =~ s/\"//g;
		 last;
	       }
	     }
	     close($FH);
	   } else {
	     return 0, N("%s does not exist.", $file);
	   }
	   1;
	 }
	};

$o->{pages} = {
	       welcome => {
			   name => N("Web server configuration wizard") . "\n\n" . N("This wizard will help you configuring the Web server for your network."),
			   post => sub { $wiz->check_dhcp },
			   no_back => 1,
			   next => 'config',
			  },
	       config => {
			  name => N("Web server") . "\n\n" . N("Your server can act as a Web server toward your internal network (intranet) and as a Web server for the Internet.") . "\n\n" . N("Select the kind of Web service you want to activate:") . "\n\n" . N("Don't check any box if you don't want to activate your Web server."),
			  pre => sub {
			    $o->{var}{web_internal} = 1;
			    $o->{var}{web_external} = 1;
			  },
			  data => [
				   { text => N("Enable the Web server for the intranet"), type => 'bool', val => \$o->{var}{web_internal} },
				   { text => N("Enable the Web server for the Internet"), type => 'bool', val => \$o->{var}{web_external} },
				  ],
			  next => 'ask_mod',
			 },
	       dhcp_warning => {
				name => N("Warning.") . "\n\n" . N("You are in dhcp, server may not work with your configuration."),
				ignore => 1,
				next => 'config',
			       },
	       ask_mod => {
			   name => N("Modules:") . "\n\n" . N("* User module: allows users to have a directory in their home directories available on your http server via http://www.yourserver.com/~user, you will be asked for the name of this directory afterward."),
			   pre => sub { $o->{var}{user_mod} = is_last_user_mod() },
			   data => [
				    { text => join("\n", warp_text(N("Allows users to get a directory in their home directories available on your http server via http://www.yourserver.com/~user."), 70)), type => 'bool', val => \$o->{var}{user_mod} },
				   ],
			   post => sub { return 'user_dir' if $o->{var}{user_mod} },
			   next => 'ask_dir',
			  },
	       user_dir => {
			    name => N("Type the name of the directory users should create in their homes (without ~/) to get it available via http://www.yourserver.com/~user"),
			    pre => sub {
				$o->{var}{user_dir} = get_user_dir();
				if ($o->{var}{user_dir} =~ /disabled/ or !$o->{var}{user_dir}) {
				    $o->{var}{user_dir} = 'public_html';
				}
			    },
			    complete => sub { 
			      if (!$o->{var}{user_dir}) {
				$in->ask_warn(N('Error'), N('You must specify a user directory.')); return 1;
			      } else { return 0; }; },
			    data => [
				     { label => N("user http sub-directory: ~/"), help => N("Type the name of the directory users should create in their homes (without ~/) to get it available via http://www.yourserver.com/~user"), val => \$o->{var}{user_dir} },
				    ],
			    next => 'ask_dir',
			   },
	       ask_dir => {
			   name => N("Type the path of the directory you want being the document root."),
			   pre => sub { $o->{var}{shared_dir} ||= $root },
			   data => [
				    { label => N("Document root:"),  val => \$o->{var}{shared_dir} },
				   ],
			   complete => sub {
			     if (! -d $o->{var}{shared_dir}) {
			       $in->ask_warn(N("Error"), N("The path you entered does not exist.")); return 1; }
			     else { return 0; };
			   },
			   next => 'summary',
			  },
	       summary => {
			   name =>  N("Configuring the Web server") . "\n\n" . N("The wizard collected the following parameters needed to configure your Web server") . "\n\n" . N("To accept these values, and configure your server, click the Next button or use the Back button to correct them."),
			   pre => sub {
			     $o->{var}{internal} = $o->{var}{web_internal} ? N("enabled") : N("disabled");
			     $o->{var}{external} = $o->{var}{web_external} ? N("enabled") : N("disabled")
			   },
			   data => [
				    { label => N("Intranet web server:"), val_ref => \$o->{var}{internal} },
				    { label => N("Internet web server:"), val_ref => \$o->{var}{external} },
				    { label => N("Document root:"), val_ref => \$o->{var}{shared_dir} },
				    { label => N("User directory:"), val_ref => \$o->{var}{user_dir} },
				   ],
			   post => \&do_it,
			   next => 'end',
			  },
	       end => {
		       name => N("Congratulations") . "\n\n" . N("The wizard successfully configured your intranet/Internet Web server"),
		       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 new {
  my ($class, $conf) = @_;
  $config = $conf;
#    if ($config->{ver} == 2) {
	$file = "/etc/httpd/conf/httpd.conf";
#	$o->{needed_rpm} = [ 'apache2' ];
	$o->{var}{servicecheck} = 'httpd';
#    } else {
#	$file = "/etc/httpd/conf/httpd.conf";
#	$o->{needed_rpm} = [ 'apache-1.3' ];
#	$o->{var}{servicecheck} = 'httpd';
#    }
    bless $o, $class;
}

sub chg_docroot {
    my $old;
    substInFile {
	s|(^\s*#?\s*DocumentRoot\s*)(\S*).*|$1$o->{var}{shared_dir}| and $old ||= $2;
    } $file;

    substInFile {
	s|^(\s*\|)<Directory\s*$old/?>|<Directory $o->{var}{shared_dir}>|;
    } $file if $old;

    substInFile {
	s|^(\s*\|)<Directory\s*.*|<Directory $o->{var}{shared_dir}>|;
    } $file;
}

sub is_user_mod {
    if ($o->{var}{user_mod}) {
	return 1;
    }
    $o->{var}{user_mod} = "disabled";
    0;
}

sub is_last_user_mod {
    my $root = get_user_dir();
    chomp($root);
    !($root eq 'disabled');
}

sub get_user_dir {
    my %conf = MDK::Wizard::Varspaceval->get($file);
    $conf{UserDir};
}

sub chg_user_dir {
    # disable by default user_mod
    if (! any { /<IfModule mod_userdir.c>/ } cat_($file)) {
	append_to_file($file, <<EOF);
# add usermod dir support
<IfModule mod_userdir.c>
    UserDir disabled
</IfModule>

<Directory /home/*/>
    AllowOverride FileInfo AuthConfig Limit
    Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec
    <Limit GET POST OPTIONS PROPFIND>
        Order allow,deny
        Allow from all
    </Limit>
    <LimitExcept GET POST OPTIONS PROPFIND>
        Order deny,allow
        Deny from all
    </LimitExcept>
</Directory>
EOF
    }

    $root = get_user_dir();
    if ($o->{var}{user_mod}) {
	substInFile {
	    s|(\s*)UserDir.*|$1UserDir $o->{var}{user_dir}|g;
	    s|<Directory\s+/home/\*/.*|<Directory /home/\*/$o->{var}{user_dir}>|g;
	} $file;
    } else {
	substInFile {
	    s|(\s*)UserDir\s*$root|$1UserDir disabled|g;
	} $file;
    }
}

sub do_it {
    $::testing and return;
    my $in = 'interactive'->vnew('su', 'Apache');
    my $w = $in->wait_message(N("Apache server"), N("Configuring your system as Apache server ..."));

    my	$that = "localhost";
    if ($o->{var}{web_external} eq "1") {
	$that = "all";
    }
    elsif ($o->{var}{web_internal} eq "1") {
	($that) = $wiz->{net}->itf_get("IPADDR") =~ qr/^(\d{1,3}\.\d{1,3}\.\d{1,3}\.)\d{1,3}$/;
	$that .= " 127.0.0.1";
    }
    cp_af($file, $file.".orig");
    substInFile {
      if (m/^\s*<Directory.*>/s...m!^\s*</Directory>!s) {
	{ s/^\s*Allow .*$/    Allow from $that\n/s }
      }
    } $file;
    chg_docroot();
    chg_user_dir();

    if (services::is_service_running('httpd')) {
      services::restart('httpd')
      } else {
	services::start('httpd')
    }
    undef $w;
    check_started($o->{var}{servicecheck});
}

1;