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package SL::Dispatcher;

use strict;

BEGIN {
unshift @INC, "modules/override"; # Use our own versions of various modules (e.g. YAML).
push @INC, "modules/fallback"; # Only use our own versions of modules if there's no system version.
push @INC, "SL"; # FCGI won't find modules that are not properly named. Help it by inclduging SL
}

use CGI qw( -no_xhtml);
use English qw(-no_match_vars);
use SL::Auth;
use SL::LXDebug;
use SL::Locale;
use SL::Common;
use Form;
use List::Util qw(first);
use File::Basename;

# Trailing new line is added so that Perl will not add the line
# number 'die' was called in.
use constant END_OF_REQUEST => "END-OF-REQUEST\n";

sub new {
my ($class, $interface) = @_;

my $self = bless {}, $class;
$self->{interface} = lc($interface || 'cgi');

return $self;
}

sub pre_request_checks {
if (!$::auth->session_tables_present) {
if ($::form->{script} eq 'admin.pl') {
::run();
::end_of_request();
} else {
show_error('login/auth_db_unreachable');
}
}
$::auth->expire_sessions;
}

sub show_error {
$::lxdebug->enter_sub;
my $template = shift;
my $error_type = shift || '';

$::locale = Locale->new($::language);
$::form->{error} = $::locale->text('The session is invalid or has expired.') if ($error_type eq 'session');
$::form->{error} = $::locale->text('Incorrect password!.') if ($error_type eq 'password');
$::myconfig{countrycode} = $::language;
$::form->{stylesheet} = 'css/lx-office-erp.css';

$::form->header;
print $::form->parse_html_template($template);
$::lxdebug->leave_sub;

::end_of_request();
}

sub pre_startup_setup {
eval {
package main;
require "config/lx-erp.conf";
};
eval {
package main;
require "config/lx-erp-local.conf";
} if -f "config/lx-erp-local.conf";

eval {
package main;
require "bin/mozilla/common.pl";
require "bin/mozilla/installationcheck.pl";
} or die $EVAL_ERROR;

# canonial globals. if it's not here, chances are it will get refactored someday.
{
no warnings 'once';
$::userspath = "users";
$::templates = "templates";
$::memberfile = "users/members";
$::menufile = "menu.ini";
$::sendmail = "| /usr/sbin/sendmail -t";
$::lxdebug = LXDebug->new;
$::auth = SL::Auth->new;
$::form = undef;
%::myconfig = ();
%::called_subs = (); # currently used for recursion detection
}

$SIG{__WARN__} = sub {
$::lxdebug->warn(@_);
}
}

sub pre_startup_checks {
::verify_installation();
}

sub pre_startup {
pre_startup_setup();
pre_startup_checks();
}

sub require_main_code {
$::lxdebug->enter_sub;
my ($script, $suffix) = @_;

eval {
package main;
require "bin/mozilla/$script$suffix";
} or die $EVAL_ERROR;

if (-f "bin/mozilla/custom_$script$suffix") {
eval {
package main;
require "bin/mozilla/custom_$script$suffix";
};
$::form->error($EVAL_ERROR) if ($EVAL_ERROR);
}
if ($::form->{login} && -f "bin/mozilla/$::form->{login}_$script") {
eval {
package main;
require "bin/mozilla/$::form->{login}_$script";
};
$::form->error($EVAL_ERROR) if ($EVAL_ERROR);
}
$::lxdebug->leave_sub;
}

sub _require_controller {
my $controller = shift;
$controller =~ s|[^A-Za-z0-9_]||g;

eval {
package main;
require "SL/Controller/${controller}.pm";
} or die $EVAL_ERROR;
}

sub _run_controller {
"SL::Controller::$_[0]"->new->_run_action($_[1]);
}

sub handle_request {
my $self = shift;
$self->{request} = shift;

$::lxdebug->enter_sub;
$::lxdebug->begin_request;

my ($script, $path, $suffix, $script_name, $action, $routing_type);

$script_name = $ENV{SCRIPT_NAME};

$self->unrequire_bin_mozilla;

$::cgi = CGI->new('');
$::locale = Locale->new($::language);
$::form = Form->new;
%::called_subs = ();

eval { ($routing_type, $script_name, $action) = _route_request($script_name); 1; } or return;

if ($routing_type eq 'old') {
$::form->{action} = lc $::form->{action};
$::form->{action} =~ s/( |-|,|\#)/_/g;

($script, $path, $suffix) = fileparse($script_name, ".pl");
require_main_code($script, $suffix);

$::form->{script} = $script . $suffix;

} else {
_require_controller($script_name);
$::form->{script} = "controller.pl";
}

pre_request_checks();

eval {
my $session_result = $::auth->restore_session;
$::auth->create_or_refresh_session;

$::form->error($::locale->text('System currently down for maintenance!')) if -e "$::userspath/nologin" && $script ne 'admin';

if ($script eq 'login' or $script eq 'admin' or $script eq 'kopf') {
$::form->{titlebar} = "Lx-Office " . $::locale->text('Version') . " $::form->{version}";
::run($session_result);

} else {
show_error('login/password_error', 'session') if SL::Auth::SESSION_EXPIRED == $session_result;
%::myconfig = $::auth->read_user($::form->{login});

show_error('login/password_error', 'password') unless $::myconfig{login};

$::locale = Locale->new($::myconfig{countrycode});

show_error('login/password_error', 'password') if SL::Auth::OK != $::auth->authenticate($::form->{login}, $::form->{password}, 0);

$::auth->set_session_value('login', $::form->{login}, 'password', $::form->{password});
$::auth->create_or_refresh_session;
$::auth->delete_session_value('FLASH')->save_session();
delete $::form->{password};

if ($action) {
map { $::form->{$_} = $::myconfig{$_} } qw(stylesheet charset)
unless $action eq 'save' && $::form->{type} eq 'preferences';

$::form->set_standard_title;
if ($routing_type eq 'old') {
::call_sub('::' . $::locale->findsub($action));
} else {
_run_controller($script_name, $action);
}
} else {
$::form->error($::locale->text('action= not defined!'));
}
}

1;
} or do {
if ($EVAL_ERROR ne END_OF_REQUEST) {
$::form->{label_error} = $::cgi->pre($EVAL_ERROR);
eval { show_error('generic/error') };
}
};

# cleanup
$::locale = undef;
$::form = undef;
$::myconfig = ();
Form::disconnect_standard_dbh();

$::lxdebug->end_request;
$::lxdebug->leave_sub;
}

sub unrequire_bin_mozilla {
my $self = shift;
return unless $self->{interface} =~ m/^(?:fastcgi|fcgid|fcgi)$/;

for (keys %INC) {
next unless m#^bin/mozilla/#;
next if /\bcommon.pl$/;
next if /\binstallationcheck.pl$/;
delete $INC{$_};
}
}

sub _route_request {
my $script_name = shift;

return $script_name =~ m/dispatcher\.pl$/ ? ('old', _route_dispatcher_request())
: $script_name =~ m/controller\.pl/ ? ('controller', _route_controller_request())
: ('old', $script_name, $::form->{action});
}

sub _route_dispatcher_request {
my $name_re = qr{[a-z]\w*};
my ($script_name, $action);

eval {
die "Unroutable request -- inavlid module name.\n" if !$::form->{M} || ($::form->{M} !~ m/^${name_re}$/);
$script_name = $::form->{M} . '.pl';

if ($::form->{A}) {
$action = $::form->{A};

} else {
$action = first { m/^A_${name_re}$/ } keys %{ $::form };
die "Unroutable request -- inavlid action name.\n" if !$action;

delete $::form->{$action};
$action = substr $action, 2;
}

delete @{$::form}{qw(M A)};

1;
} or do {
$::form->{label_error} = $::cgi->pre($EVAL_ERROR);
show_error('generic/error');
};

return ($script_name, $action);
}

sub _route_controller_request {
my ($controller, $action);

eval {
$::form->{action} =~ m|^ ( [A-Z] [A-Za-z0-9_]* ) / ( [a-z] [a-z0-9_]* ) $|x || die "Unroutable request -- inavlid controller/action.\n";
($controller, $action) = ($1, $2);
delete $::form->{action};

1;
} or do {
$::form->{label_error} = $::cgi->pre($EVAL_ERROR);
show_error('generic/error');
};

return ($controller, $action);
}

sub get_standard_filehandles {
my $self = shift;

return $self->{interface} =~ m/f(?:ast)cgi/i ? $self->{request}->GetHandles() : (\*STDIN, \*STDOUT, \*STDERR);
}

package main;

use strict;

sub end_of_request {
die SL::Dispatcher->END_OF_REQUEST;
}

1;
(22-22/62)