Bug 13669: followup to add DBIx::RunSQL dependency

[koha.git] / C4 / Auth.pm

package C4::Auth;

# Copyright 2000-2002 Katipo Communications
#
# This file is part of Koha.
#
# Koha 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 3 of the License, or
# (at your option) any later version.
#
# Koha 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 Koha; if not, see <http://www.gnu.org/licenses>.

use strict;
use warnings;
use Digest::MD5 qw(md5_base64);
use File::Spec;
use JSON qw/encode_json/;
use URI::Escape;
use CGI::Session;

require Exporter;
use C4::Context;
use C4::Templates;    # to get the template
use C4::Languages;
use C4::Branch;       # GetBranches
use C4::Search::History;
use Koha;
use Koha::AuthUtils qw(hash_password);
use Koha::LibraryCategories;
use Koha::Libraries;
use POSIX qw/strftime/;
use List::MoreUtils qw/ any /;
use Encode qw( encode is_utf8);

# use utf8;
use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $debug $ldap $cas $caslogout $shib $shib_login);

BEGIN {
    sub psgi_env { any { /^psgi\./ } keys %ENV }

    sub safe_exit {
        if   (psgi_env) { die 'psgi:exit' }
        else            { exit }
    }

    $debug     = $ENV{DEBUG};
    @ISA       = qw(Exporter);
    @EXPORT    = qw(&checkauth &get_template_and_user &haspermission &get_user_subpermissions);
    @EXPORT_OK = qw(&check_api_auth &get_session &check_cookie_auth &checkpw &checkpw_internal &checkpw_hash
      &get_all_subpermissions &get_user_subpermissions
    );
    %EXPORT_TAGS = ( EditPermissions => [qw(get_all_subpermissions get_user_subpermissions)] );
    $ldap      = C4::Context->config('useldapserver') || 0;
    $cas       = C4::Context->preference('casAuthentication');
    $shib      = C4::Context->config('useshibboleth') || 0;
    $caslogout = C4::Context->preference('casLogout');
    require C4::Auth_with_cas;    # no import

    if ($ldap) {
        require C4::Auth_with_ldap;
        import C4::Auth_with_ldap qw(checkpw_ldap);
    }
    if ($shib) {
        require C4::Auth_with_shibboleth;
        import C4::Auth_with_shibboleth
          qw(shib_ok checkpw_shib logout_shib login_shib_url get_login_shib);

        # Check for good config
        if ( shib_ok() ) {

            # Get shibboleth login attribute
            $shib_login = get_login_shib();
        }

        # Bad config, disable shibboleth
        else {
            $shib = 0;
        }
    }
    if ($cas) {
        import C4::Auth_with_cas qw(check_api_auth_cas checkpw_cas login_cas logout_cas login_cas_url);
    }

}

=head1 NAME

C4::Auth - Authenticates Koha users

=head1 SYNOPSIS

  use CGI qw ( -utf8 );
  use C4::Auth;
  use C4::Output;

  my $query = new CGI;

  my ($template, $borrowernumber, $cookie)
    = get_template_and_user(
        {
            template_name   => "opac-main.tt",
            query           => $query,
      type            => "opac",
      authnotrequired => 0,
      flagsrequired   => { catalogue => '*', tools => 'import_patrons' },
  }
    );

  output_html_with_http_headers $query, $cookie, $template->output;

=head1 DESCRIPTION

The main function of this module is to provide
authentification. However the get_template_and_user function has
been provided so that a users login information is passed along
automatically. This gets loaded into the template.

=head1 FUNCTIONS

=head2 get_template_and_user

 my ($template, $borrowernumber, $cookie)
     = get_template_and_user(
       {
         template_name   => "opac-main.tt",
         query           => $query,
         type            => "opac",
         authnotrequired => 0,
         flagsrequired   => { catalogue => '*', tools => 'import_patrons' },
       }
     );

This call passes the C<query>, C<flagsrequired> and C<authnotrequired>
to C<&checkauth> (in this module) to perform authentification.
See C<&checkauth> for an explanation of these parameters.

The C<template_name> is then used to find the correct template for
the page. The authenticated users details are loaded onto the
template in the HTML::Template LOOP variable C<USER_INFO>. Also the
C<sessionID> is passed to the template. This can be used in templates
if cookies are disabled. It needs to be put as and input to every
authenticated page.

More information on the C<gettemplate> sub can be found in the
Output.pm module.

=cut

sub get_template_and_user {

    my $in = shift;
    my ( $user, $cookie, $sessionID, $flags );

    C4::Context->interface( $in->{type} );

    my $safe_chars = 'a-zA-Z0-9_\-\/';
    die "bad template path" unless $in->{'template_name'} =~ m/^[$safe_chars]+\.tt$/ig; #sanitize input

    $in->{'authnotrequired'} ||= 0;
    my $template = C4::Templates::gettemplate(
        $in->{'template_name'},
        $in->{'type'},
        $in->{'query'},
        $in->{'is_plugin'}
    );

    if ( $in->{'template_name'} !~ m/maintenance/ ) {
        ( $user, $cookie, $sessionID, $flags ) = checkauth(
            $in->{'query'},
            $in->{'authnotrequired'},
            $in->{'flagsrequired'},
            $in->{'type'}
        );
    }


    # If the user logged in is the SCO user and he tries to go out the SCO module, log the user out removing the CGISESSID cookie
    if ( $in->{type} eq 'opac' and $in->{template_name} !~ m|sco/| ) {
        if (  C4::Context->preference('AutoSelfCheckID') && $user eq C4::Context->preference('AutoSelfCheckID') ) {
            $template = C4::Templates::gettemplate( 'opac-auth.tt', 'opac', $in->{query} );
            my $cookie = $in->{query}->cookie(
                -name     => 'CGISESSID',
                -value    => '',
                -expires  => '',
                -HttpOnly => 1,
            );

            $template->param(
                loginprompt => 1,
                script_name => _get_script_name(),
            );
            print $in->{query}->header(
                {   type              => 'text/html',
                    charset           => 'utf-8',
                    cookie            => $cookie,
                    'X-Frame-Options' => 'SAMEORIGIN'
                }
              ),
            $template->output;
            safe_exit;
        }
    }

    my $borrowernumber;
    if ($user) {
        require C4::Members;

        # It's possible for $user to be the borrowernumber if they don't have a
        # userid defined (and are logging in through some other method, such
        # as SSL certs against an email address)
        my $borrower;
        $borrowernumber = getborrowernumber($user) if defined($user);
        if ( !defined($borrowernumber) && defined($user) ) {
            $borrower = C4::Members::GetMember( borrowernumber => $user );
            if ($borrower) {
                $borrowernumber = $user;

                # A bit of a hack, but I don't know there's a nicer way
                # to do it.
                $user = $borrower->{firstname} . ' ' . $borrower->{surname};
            }
        } else {
            $borrower = C4::Members::GetMember( borrowernumber => $borrowernumber );
        }

        # user info
        $template->param( loggedinusername   => $user );
        $template->param( loggedinusernumber => $borrowernumber );
        $template->param( sessionID          => $sessionID );

        if ( $in->{'type'} eq 'opac' ) {
            require Koha::Virtualshelves;
            my $some_private_shelves = Koha::Virtualshelves->get_some_shelves(
                {
                    borrowernumber => $borrowernumber,
                    category       => 1,
                }
            );
            my $some_public_shelves = Koha::Virtualshelves->get_some_shelves(
                {
                    category       => 2,
                }
            );
            $template->param(
                some_private_shelves => $some_private_shelves,
                some_public_shelves  => $some_public_shelves,
            );
        }

        $template->param( "USER_INFO" => $borrower );

        my $all_perms = get_all_subpermissions();

        my @flagroots = qw(circulate catalogue parameters borrowers permissions reserveforothers borrow
          editcatalogue updatecharges management tools editauthorities serials reports acquisition);

        # We are going to use the $flags returned by checkauth
        # to create the template's parameters that will indicate
        # which menus the user can access.
        if ( $flags && $flags->{superlibrarian} == 1 ) {
            $template->param( CAN_user_circulate        => 1 );
            $template->param( CAN_user_catalogue        => 1 );
            $template->param( CAN_user_parameters       => 1 );
            $template->param( CAN_user_borrowers        => 1 );
            $template->param( CAN_user_permissions      => 1 );
            $template->param( CAN_user_reserveforothers => 1 );
            $template->param( CAN_user_editcatalogue    => 1 );
            $template->param( CAN_user_updatecharges    => 1 );
            $template->param( CAN_user_acquisition      => 1 );
            $template->param( CAN_user_management       => 1 );
            $template->param( CAN_user_tools            => 1 );
            $template->param( CAN_user_editauthorities  => 1 );
            $template->param( CAN_user_serials          => 1 );
            $template->param( CAN_user_reports          => 1 );
            $template->param( CAN_user_staffaccess      => 1 );
            $template->param( CAN_user_plugins          => 1 );
            $template->param( CAN_user_coursereserves   => 1 );
            foreach my $module ( keys %$all_perms ) {

                foreach my $subperm ( keys %{ $all_perms->{$module} } ) {
                    $template->param( "CAN_user_${module}_${subperm}" => 1 );
                }
            }
        }

        if ($flags) {
            foreach my $module ( keys %$all_perms ) {
                if ( defined($flags->{$module}) && $flags->{$module} == 1 ) {
                    foreach my $subperm ( keys %{ $all_perms->{$module} } ) {
                        $template->param( "CAN_user_${module}_${subperm}" => 1 );
                    }
                } elsif ( ref( $flags->{$module} ) ) {
                    foreach my $subperm ( keys %{ $flags->{$module} } ) {
                        $template->param( "CAN_user_${module}_${subperm}" => 1 );
                    }
                }
            }
        }

        if ($flags) {
            foreach my $module ( keys %$flags ) {
                if ( $flags->{$module} == 1 or ref( $flags->{$module} ) ) {
                    $template->param( "CAN_user_$module" => 1 );
                    if ( $module eq "parameters" ) {
                        $template->param( CAN_user_management => 1 );
                    }
                }
            }
        }

        # Logged-in opac search history
        # If the requested template is an opac one and opac search history is enabled
        if ( $in->{type} eq 'opac' && C4::Context->preference('EnableOpacSearchHistory') ) {
            my $dbh   = C4::Context->dbh;
            my $query = "SELECT COUNT(*) FROM search_history WHERE userid=?";
            my $sth   = $dbh->prepare($query);
            $sth->execute($borrowernumber);

            # If at least one search has already been performed
            if ( $sth->fetchrow_array > 0 ) {

                # We show the link in opac
                $template->param( EnableOpacSearchHistory => 1 );
            }

            # And if there are searches performed when the user was not logged in,
            # we add them to the logged-in search history
            my @recentSearches = C4::Search::History::get_from_session( { cgi => $in->{'query'} } );
            if (@recentSearches) {
                my $dbh   = C4::Context->dbh;
                my $query = q{
                    INSERT INTO search_history(userid, sessionid, query_desc, query_cgi, type,  total, time )
                    VALUES (?, ?, ?, ?, ?, ?, ?)
                };

                my $sth = $dbh->prepare($query);
                $sth->execute( $borrowernumber,
                    $in->{query}->cookie("CGISESSID"),
                    $_->{query_desc},
                    $_->{query_cgi},
                    $_->{type} || 'biblio',
                    $_->{total},
                    $_->{time},
                ) foreach @recentSearches;

                # clear out the search history from the session now that
                # we've saved it to the database
                C4::Search::History::set_to_session( { cgi => $in->{'query'}, search_history => [] } );
            }
        } elsif ( $in->{type} eq 'intranet' and C4::Context->preference('EnableSearchHistory') ) {
            $template->param( EnableSearchHistory => 1 );
        }
    }
    else {    # if this is an anonymous session, setup to display public lists...

        # If shibboleth is enabled, and we're in an anonymous session, we should allow
        # the user to attempt login via shibboleth.
        if ($shib) {
            $template->param( shibbolethAuthentication => $shib,
                shibbolethLoginUrl => login_shib_url( $in->{'query'} ),
            );

            # If shibboleth is enabled and we have a shibboleth login attribute,
            # but we are in an anonymous session, then we clearly have an invalid
            # shibboleth koha account.
            if ($shib_login) {
                $template->param( invalidShibLogin => '1' );
            }
        }

        $template->param( sessionID => $sessionID );

        if ( $in->{'type'} eq 'opac' ){
            require Koha::Virtualshelves;
            my $some_public_shelves = Koha::Virtualshelves->get_some_shelves(
                {
                    category       => 2,
                }
            );
            $template->param(
                some_public_shelves  => $some_public_shelves,
            );
        }
    }

    # Anonymous opac search history
    # If opac search history is enabled and at least one search has already been performed
    if ( C4::Context->preference('EnableOpacSearchHistory') ) {
        my @recentSearches = C4::Search::History::get_from_session( { cgi => $in->{'query'} } );
        if (@recentSearches) {
            $template->param( EnableOpacSearchHistory => 1 );
        }
    }

    if ( C4::Context->preference('dateformat') ) {
        $template->param( dateformat => C4::Context->preference('dateformat') );
    }

    $template->param(auth_forwarded_hash => scalar $in->{'query'}->param('auth_forwarded_hash'));

    # these template parameters are set the same regardless of $in->{'type'}

    # Set the using_https variable for templates
    # FIXME Under Plack the CGI->https method always returns 'OFF'
    my $https = $in->{query}->https();
    my $using_https = ( defined $https and $https ne 'OFF' ) ? 1 : 0;

    $template->param(
        "BiblioDefaultView" . C4::Context->preference("BiblioDefaultView") => 1,
        EnhancedMessagingPreferences                                       => C4::Context->preference('EnhancedMessagingPreferences'),
        GoogleJackets                                                      => C4::Context->preference("GoogleJackets"),
        OpenLibraryCovers                                                  => C4::Context->preference("OpenLibraryCovers"),
        KohaAdminEmailAddress                                              => "" . C4::Context->preference("KohaAdminEmailAddress"),
        LoginBranchcode => ( C4::Context->userenv ? C4::Context->userenv->{"branch"}    : undef ),
        LoginFirstname  => ( C4::Context->userenv ? C4::Context->userenv->{"firstname"} : "Bel" ),
        LoginSurname    => C4::Context->userenv ? C4::Context->userenv->{"surname"}      : "Inconnu",
        emailaddress    => C4::Context->userenv ? C4::Context->userenv->{"emailaddress"} : undef,
        loggedinpersona => C4::Context->userenv ? C4::Context->userenv->{"persona"}      : undef,
        TagsEnabled     => C4::Context->preference("TagsEnabled"),
        hide_marc       => C4::Context->preference("hide_marc"),
        item_level_itypes  => C4::Context->preference('item-level_itypes'),
        patronimages       => C4::Context->preference("patronimages"),
        singleBranchMode   => ( Koha::Libraries->search->count == 1 ),
        XSLTDetailsDisplay => C4::Context->preference("XSLTDetailsDisplay"),
        XSLTResultsDisplay => C4::Context->preference("XSLTResultsDisplay"),
        using_https        => $using_https,
        noItemTypeImages   => C4::Context->preference("noItemTypeImages"),
        marcflavour        => C4::Context->preference("marcflavour"),
        persona            => C4::Context->preference("persona"),
        OPACBaseURL        => C4::Context->preference('OPACBaseURL'),
    );
    if ( $in->{'type'} eq "intranet" ) {
        $template->param(
            AmazonCoverImages                                                          => C4::Context->preference("AmazonCoverImages"),
            AutoLocation                                                               => C4::Context->preference("AutoLocation"),
            "BiblioDefaultView" . C4::Context->preference("IntranetBiblioDefaultView") => 1,
            CircAutocompl                                                              => C4::Context->preference("CircAutocompl"),
            FRBRizeEditions                                                            => C4::Context->preference("FRBRizeEditions"),
            IndependentBranches                                                        => C4::Context->preference("IndependentBranches"),
            IntranetNav                                                                => C4::Context->preference("IntranetNav"),
            IntranetmainUserblock                                                      => C4::Context->preference("IntranetmainUserblock"),
            LibraryName                                                                => C4::Context->preference("LibraryName"),
            LoginBranchname                                                            => ( C4::Context->userenv ? C4::Context->userenv->{"branchname"} : undef ),
            advancedMARCEditor                                                         => C4::Context->preference("advancedMARCEditor"),
            canreservefromotherbranches                                                => C4::Context->preference('canreservefromotherbranches'),
            intranetcolorstylesheet                                                    => C4::Context->preference("intranetcolorstylesheet"),
            IntranetFavicon                                                            => C4::Context->preference("IntranetFavicon"),
            intranetreadinghistory                                                     => C4::Context->preference("intranetreadinghistory"),
            intranetstylesheet                                                         => C4::Context->preference("intranetstylesheet"),
            IntranetUserCSS                                                            => C4::Context->preference("IntranetUserCSS"),
            IntranetUserJS                                                             => C4::Context->preference("IntranetUserJS"),
            intranetbookbag                                                            => C4::Context->preference("intranetbookbag"),
            suggestion                                                                 => C4::Context->preference("suggestion"),
            virtualshelves                                                             => C4::Context->preference("virtualshelves"),
            StaffSerialIssueDisplayCount                                               => C4::Context->preference("StaffSerialIssueDisplayCount"),
            EasyAnalyticalRecords                                                      => C4::Context->preference('EasyAnalyticalRecords'),
            LocalCoverImages                                                           => C4::Context->preference('LocalCoverImages'),
            OPACLocalCoverImages                                                       => C4::Context->preference('OPACLocalCoverImages'),
            AllowMultipleCovers                                                        => C4::Context->preference('AllowMultipleCovers'),
            EnableBorrowerFiles                                                        => C4::Context->preference('EnableBorrowerFiles'),
            UseKohaPlugins                                                             => C4::Context->preference('UseKohaPlugins'),
            UseCourseReserves                                                          => C4::Context->preference("UseCourseReserves"),
            useDischarge                                                               => C4::Context->preference('useDischarge'),
        );
    }
    else {
        warn "template type should be OPAC, here it is=[" . $in->{'type'} . "]" unless ( $in->{'type'} eq 'opac' );

        #TODO : replace LibraryName syspref with 'system name', and remove this html processing
        my $LibraryNameTitle = C4::Context->preference("LibraryName");
        $LibraryNameTitle =~ s/<(?:\/?)(?:br|p)\s*(?:\/?)>/ /sgi;
        $LibraryNameTitle =~ s/<(?:[^<>'"]|'(?:[^']*)'|"(?:[^"]*)")*>//sg;

        # clean up the busc param in the session
        # if the page is not opac-detail and not the "add to list" page
        # and not the "edit comments" page
        if ( C4::Context->preference("OpacBrowseResults")
            && $in->{'template_name'} =~ /opac-(.+)\.(?:tt|tmpl)$/ ) {
            my $pagename = $1;
            unless ( $pagename =~ /^(?:MARC|ISBD)?detail$/
                or $pagename =~ /^addbybiblionumber$/
                or $pagename =~ /^review$/ ) {
                my $sessionSearch = get_session( $sessionID || $in->{'query'}->cookie("CGISESSID") );
                $sessionSearch->clear( ["busc"] ) if ( $sessionSearch->param("busc") );
            }
        }

        # variables passed from CGI: opac_css_override and opac_search_limits.
        my $opac_search_limit   = $ENV{'OPAC_SEARCH_LIMIT'};
        my $opac_limit_override = $ENV{'OPAC_LIMIT_OVERRIDE'};
        my $opac_name           = '';
        if (
            ( $opac_limit_override && $opac_search_limit && $opac_search_limit =~ /branch:(\w+)/ ) ||
            ( $in->{'query'}->param('limit') && $in->{'query'}->param('limit') =~ /branch:(\w+)/ ) ||
            ( $in->{'query'}->param('multibranchlimit') && $in->{'query'}->param('multibranchlimit') =~ /multibranchlimit-(\w+)/ )
          ) {
            $opac_name = $1;    # opac_search_limit is a branch, so we use it.
        } elsif ( $in->{'query'}->param('multibranchlimit') ) {
            $opac_name = $in->{'query'}->param('multibranchlimit');
        } elsif ( C4::Context->preference("SearchMyLibraryFirst") && C4::Context->userenv && C4::Context->userenv->{'branch'} ) {
            $opac_name = C4::Context->userenv->{'branch'};
        }

        my $library_categories = Koha::LibraryCategories->search({categorytype => 'searchdomain', show_in_pulldown => 1}, { order_by => ['categorytype', 'categorycode']});
        $template->param(
            OpacAdditionalStylesheet                   => C4::Context->preference("OpacAdditionalStylesheet"),
            AnonSuggestions                       => "" . C4::Context->preference("AnonSuggestions"),
            BranchesLoop                          => GetBranchesLoop($opac_name),
            BranchCategoriesLoop                  => $library_categories,
            opac_name                             => $opac_name,
            LibraryName                           => "" . C4::Context->preference("LibraryName"),
            LibraryNameTitle                      => "" . $LibraryNameTitle,
            LoginBranchname                       => C4::Context->userenv ? C4::Context->userenv->{"branchname"} : "",
            OPACAmazonCoverImages                 => C4::Context->preference("OPACAmazonCoverImages"),
            OPACFRBRizeEditions                   => C4::Context->preference("OPACFRBRizeEditions"),
            OpacHighlightedWords                  => C4::Context->preference("OpacHighlightedWords"),
            OPACShelfBrowser                      => "" . C4::Context->preference("OPACShelfBrowser"),
            OPACURLOpenInNewWindow                => "" . C4::Context->preference("OPACURLOpenInNewWindow"),
            OPACUserCSS                           => "" . C4::Context->preference("OPACUserCSS"),
            OpacAuthorities                       => C4::Context->preference("OpacAuthorities"),
            opac_css_override                     => $ENV{'OPAC_CSS_OVERRIDE'},
            opac_search_limit                     => $opac_search_limit,
            opac_limit_override                   => $opac_limit_override,
            OpacBrowser                           => C4::Context->preference("OpacBrowser"),
            OpacCloud                             => C4::Context->preference("OpacCloud"),
            OpacKohaUrl                           => C4::Context->preference("OpacKohaUrl"),
            OpacMainUserBlock                     => "" . C4::Context->preference("OpacMainUserBlock"),
            OpacNav                               => "" . C4::Context->preference("OpacNav"),
            OpacNavRight                          => "" . C4::Context->preference("OpacNavRight"),
            OpacNavBottom                         => "" . C4::Context->preference("OpacNavBottom"),
            OpacPasswordChange                    => C4::Context->preference("OpacPasswordChange"),
            OPACPatronDetails                     => C4::Context->preference("OPACPatronDetails"),
            OPACPrivacy                           => C4::Context->preference("OPACPrivacy"),
            OPACFinesTab                          => C4::Context->preference("OPACFinesTab"),
            OpacTopissue                          => C4::Context->preference("OpacTopissue"),
            RequestOnOpac                         => C4::Context->preference("RequestOnOpac"),
            'Version'                             => C4::Context->preference('Version'),
            hidelostitems                         => C4::Context->preference("hidelostitems"),
            mylibraryfirst                        => ( C4::Context->preference("SearchMyLibraryFirst") && C4::Context->userenv ) ? C4::Context->userenv->{'branch'} : '',
            opaclayoutstylesheet                  => "" . C4::Context->preference("opaclayoutstylesheet"),
            opacbookbag                           => "" . C4::Context->preference("opacbookbag"),
            opaccredits                           => "" . C4::Context->preference("opaccredits"),
            OpacFavicon                           => C4::Context->preference("OpacFavicon"),
            opacheader                            => "" . C4::Context->preference("opacheader"),
            opaclanguagesdisplay                  => "" . C4::Context->preference("opaclanguagesdisplay"),
            opacreadinghistory                    => C4::Context->preference("opacreadinghistory"),
            OPACUserJS                            => C4::Context->preference("OPACUserJS"),
            opacuserlogin                         => "" . C4::Context->preference("opacuserlogin"),
            OpenLibrarySearch                     => C4::Context->preference("OpenLibrarySearch"),
            ShowReviewer                          => C4::Context->preference("ShowReviewer"),
            ShowReviewerPhoto                     => C4::Context->preference("ShowReviewerPhoto"),
            suggestion                            => "" . C4::Context->preference("suggestion"),
            virtualshelves                        => "" . C4::Context->preference("virtualshelves"),
            OPACSerialIssueDisplayCount           => C4::Context->preference("OPACSerialIssueDisplayCount"),
            OPACXSLTDetailsDisplay                => C4::Context->preference("OPACXSLTDetailsDisplay"),
            OPACXSLTResultsDisplay                => C4::Context->preference("OPACXSLTResultsDisplay"),
            SyndeticsClientCode                   => C4::Context->preference("SyndeticsClientCode"),
            SyndeticsEnabled                      => C4::Context->preference("SyndeticsEnabled"),
            SyndeticsCoverImages                  => C4::Context->preference("SyndeticsCoverImages"),
            SyndeticsTOC                          => C4::Context->preference("SyndeticsTOC"),
            SyndeticsSummary                      => C4::Context->preference("SyndeticsSummary"),
            SyndeticsEditions                     => C4::Context->preference("SyndeticsEditions"),
            SyndeticsExcerpt                      => C4::Context->preference("SyndeticsExcerpt"),
            SyndeticsReviews                      => C4::Context->preference("SyndeticsReviews"),
            SyndeticsAuthorNotes                  => C4::Context->preference("SyndeticsAuthorNotes"),
            SyndeticsAwards                       => C4::Context->preference("SyndeticsAwards"),
            SyndeticsSeries                       => C4::Context->preference("SyndeticsSeries"),
            SyndeticsCoverImageSize               => C4::Context->preference("SyndeticsCoverImageSize"),
            OPACLocalCoverImages                  => C4::Context->preference("OPACLocalCoverImages"),
            PatronSelfRegistration                => C4::Context->preference("PatronSelfRegistration"),
            PatronSelfRegistrationDefaultCategory => C4::Context->preference("PatronSelfRegistrationDefaultCategory"),
            useDischarge                 => C4::Context->preference('useDischarge'),
        );

        $template->param( OpacPublic => '1' ) if ( $user || C4::Context->preference("OpacPublic") );
    }

    # Check if we were asked using parameters to force a specific language
    if ( defined $in->{'query'}->param('language') ) {

        # Extract the language, let C4::Languages::getlanguage choose
        # what to do
        my $language = C4::Languages::getlanguage( $in->{'query'} );
        my $languagecookie = C4::Templates::getlanguagecookie( $in->{'query'}, $language );
        if ( ref $cookie eq 'ARRAY' ) {
            push @{$cookie}, $languagecookie;
        } else {
            $cookie = [ $cookie, $languagecookie ];
        }
    }

    return ( $template, $borrowernumber, $cookie, $flags );
}

=head2 checkauth

  ($userid, $cookie, $sessionID) = &checkauth($query, $noauth, $flagsrequired, $type);

Verifies that the user is authorized to run this script.  If
the user is authorized, a (userid, cookie, session-id, flags)
quadruple is returned.  If the user is not authorized but does
not have the required privilege (see $flagsrequired below), it
displays an error page and exits.  Otherwise, it displays the
login page and exits.

Note that C<&checkauth> will return if and only if the user
is authorized, so it should be called early on, before any
unfinished operations (e.g., if you've opened a file, then
C<&checkauth> won't close it for you).

C<$query> is the CGI object for the script calling C<&checkauth>.

The C<$noauth> argument is optional. If it is set, then no
authorization is required for the script.

C<&checkauth> fetches user and session information from C<$query> and
ensures that the user is authorized to run scripts that require
authorization.

The C<$flagsrequired> argument specifies the required privileges
the user must have if the username and password are correct.
It should be specified as a reference-to-hash; keys in the hash
should be the "flags" for the user, as specified in the Members
intranet module. Any key specified must correspond to a "flag"
in the userflags table. E.g., { circulate => 1 } would specify
that the user must have the "circulate" privilege in order to
proceed. To make sure that access control is correct, the
C<$flagsrequired> parameter must be specified correctly.

Koha also has a concept of sub-permissions, also known as
granular permissions.  This makes the value of each key
in the C<flagsrequired> hash take on an additional
meaning, i.e.,

 1

The user must have access to all subfunctions of the module
specified by the hash key.

 *

The user must have access to at least one subfunction of the module
specified by the hash key.

 specific permission, e.g., 'export_catalog'

The user must have access to the specific subfunction list, which
must correspond to a row in the permissions table.

The C<$type> argument specifies whether the template should be
retrieved from the opac or intranet directory tree.  "opac" is
assumed if it is not specified; however, if C<$type> is specified,
"intranet" is assumed if it is not "opac".

If C<$query> does not have a valid session ID associated with it
(i.e., the user has not logged in) or if the session has expired,
C<&checkauth> presents the user with a login page (from the point of
view of the original script, C<&checkauth> does not return). Once the
user has authenticated, C<&checkauth> restarts the original script
(this time, C<&checkauth> returns).

The login page is provided using a HTML::Template, which is set in the
systempreferences table or at the top of this file. The variable C<$type>
selects which template to use, either the opac or the intranet
authentification template.

C<&checkauth> returns a user ID, a cookie, and a session ID. The
cookie should be sent back to the browser; it verifies that the user
has authenticated.

=cut

sub _version_check {
    my $type  = shift;
    my $query = shift;
    my $version;

    # If version syspref is unavailable, it means Koha is being installed,
    # and so we must redirect to OPAC maintenance page or to the WebInstaller
    # also, if OpacMaintenance is ON, OPAC should redirect to maintenance
    if ( C4::Context->preference('OpacMaintenance') && $type eq 'opac' ) {
        warn "OPAC Install required, redirecting to maintenance";
        print $query->redirect("/cgi-bin/koha/maintenance.pl");
        safe_exit;
    }
    unless ( $version = C4::Context->preference('Version') ) {    # assignment, not comparison
        if ( $type ne 'opac' ) {
            warn "Install required, redirecting to Installer";
            print $query->redirect("/cgi-bin/koha/installer/install.pl");
        } else {
            warn "OPAC Install required, redirecting to maintenance";
            print $query->redirect("/cgi-bin/koha/maintenance.pl");
        }
        safe_exit;
    }

    # check that database and koha version are the same
    # there is no DB version, it's a fresh install,
    # go to web installer
    # there is a DB version, compare it to the code version
    my $kohaversion = Koha::version();

    # remove the 3 last . to have a Perl number
    $kohaversion =~ s/(.*\..*)\.(.*)\.(.*)/$1$2$3/;
    $debug and print STDERR "kohaversion : $kohaversion\n";
    if ( $version < $kohaversion ) {
        my $warning = "Database update needed, redirecting to %s. Database is $version and Koha is $kohaversion";
        if ( $type ne 'opac' ) {
            warn sprintf( $warning, 'Installer' );
            print $query->redirect("/cgi-bin/koha/installer/install.pl?step=1&op=updatestructure");
        } else {
            warn sprintf( "OPAC: " . $warning, 'maintenance' );
            print $query->redirect("/cgi-bin/koha/maintenance.pl");
        }
        safe_exit;
    }
}

sub _session_log {
    (@_) or return 0;
    open my $fh, '>>', "/tmp/sessionlog" or warn "ERROR: Cannot append to /tmp/sessionlog";
    printf $fh join( "\n", @_ );
    close $fh;
}

sub _timeout_syspref {
    my $timeout = C4::Context->preference('timeout') || 600;

    # value in days, convert in seconds
    if ( $timeout =~ /(\d+)[dD]/ ) {
        $timeout = $1 * 86400;
    }
    return $timeout;
}

sub checkauth {
    my $query = shift;
    $debug and warn "Checking Auth";

    # $authnotrequired will be set for scripts which will run without authentication
    my $authnotrequired = shift;
    my $flagsrequired   = shift;
    my $type            = shift;
    my $persona         = shift;
    $type = 'opac' unless $type;

    my $dbh     = C4::Context->dbh;
    my $timeout = _timeout_syspref();

    _version_check( $type, $query );

    # state variables
    my $loggedin = 0;
    my %info;
    my ( $userid, $cookie, $sessionID, $flags );
    my $logout = $query->param('logout.x');

    my $anon_search_history;

    # This parameter is the name of the CAS server we want to authenticate against,
    # when using authentication against multiple CAS servers, as configured in Auth_cas_servers.yaml
    my $casparam = $query->param('cas');
    my $q_userid = $query->param('userid') // '';

    # Basic authentication is incompatible with the use of Shibboleth,
    # as Shibboleth may return REMOTE_USER as a Shibboleth attribute,
    # and it may not be the attribute we want to use to match the koha login.
    #
    # Also, do not consider an empty REMOTE_USER.
    #
    # Finally, after those tests, we can assume (although if it would be better with
    # a syspref) that if we get a REMOTE_USER, that's from basic authentication,
    # and we can affect it to $userid.
    if ( !$shib and defined( $ENV{'REMOTE_USER'} ) and $ENV{'REMOTE_USER'} ne '' and $userid = $ENV{'REMOTE_USER'} ) {

        # Using Basic Authentication, no cookies required
        $cookie = $query->cookie(
            -name     => 'CGISESSID',
            -value    => '',
            -expires  => '',
            -HttpOnly => 1,
        );
        $loggedin = 1;
    }
    elsif ($persona) {

        # we don't want to set a session because we are being called by a persona callback
    }
    elsif ( $sessionID = $query->cookie("CGISESSID") )
    {    # assignment, not comparison
        my $session = get_session($sessionID);
        C4::Context->_new_userenv($sessionID);
        my ( $ip, $lasttime, $sessiontype );
        my $s_userid = '';
        if ($session) {
            $s_userid = $session->param('id') // '';
            C4::Context->set_userenv(
                $session->param('number'),       $s_userid,
                $session->param('cardnumber'),   $session->param('firstname'),
                $session->param('surname'),      $session->param('branch'),
                $session->param('branchname'),   $session->param('flags'),
                $session->param('emailaddress'), $session->param('branchprinter'),
                $session->param('persona'),      $session->param('shibboleth')
            );
            C4::Context::set_shelves_userenv( 'bar', $session->param('barshelves') );
            C4::Context::set_shelves_userenv( 'pub', $session->param('pubshelves') );
            C4::Context::set_shelves_userenv( 'tot', $session->param('totshelves') );
            $debug and printf STDERR "AUTH_SESSION: (%s)\t%s %s - %s\n", map { $session->param($_) } qw(cardnumber firstname surname branch);
            $ip          = $session->param('ip');
            $lasttime    = $session->param('lasttime');
            $userid      = $s_userid;
            $sessiontype = $session->param('sessiontype') || '';
        }
        if ( ( $query->param('koha_login_context') && ( $q_userid ne $s_userid ) )
            || ( $cas && $query->param('ticket') && !C4::Context->userenv->{'id'} )
            || ( $shib && $shib_login && !$logout && !C4::Context->userenv->{'id'} )
        ) {

            #if a user enters an id ne to the id in the current session, we need to log them in...
            #first we need to clear the anonymous session...
            $debug and warn "query id = $q_userid but session id = $s_userid";
            $anon_search_history = $session->param('search_history');
            $session->delete();
            $session->flush;
            C4::Context->_unset_userenv($sessionID);
            $sessionID = undef;
            $userid    = undef;
        }
        elsif ($logout) {

            # voluntary logout the user
            # check wether the user was using their shibboleth session or a local one
            my $shibSuccess = C4::Context->userenv->{'shibboleth'};
            $session->delete();
            $session->flush;
            C4::Context->_unset_userenv($sessionID);

            #_session_log(sprintf "%20s from %16s logged out at %30s (manually).\n", $userid,$ip,(strftime "%c",localtime));
            $sessionID = undef;
            $userid    = undef;

            if ($cas and $caslogout) {
                logout_cas($query, $type);
            }

            # If we are in a shibboleth session (shibboleth is enabled, a shibboleth match attribute is set and matches koha matchpoint)
            if ( $shib and $shib_login and $shibSuccess and $type eq 'opac' ) {

                # (Note: $type eq 'opac' condition should be removed when shibboleth authentication for intranet will be implemented)
                logout_shib($query);
            }
        }
        elsif ( !$lasttime || ( $lasttime < time() - $timeout ) ) {

            # timed logout
            $info{'timed_out'} = 1;
            if ($session) {
                $session->delete();
                $session->flush;
            }
            C4::Context->_unset_userenv($sessionID);

            #_session_log(sprintf "%20s from %16s logged out at %30s (inactivity).\n", $userid,$ip,(strftime "%c",localtime));
            $userid    = undef;
            $sessionID = undef;
        }
        elsif ( C4::Context->preference('SessionRestrictionByIP') && $ip ne $ENV{'REMOTE_ADDR'} ) {

            # Different ip than originally logged in from
            $info{'oldip'}        = $ip;
            $info{'newip'}        = $ENV{'REMOTE_ADDR'};
            $info{'different_ip'} = 1;
            $session->delete();
            $session->flush;
            C4::Context->_unset_userenv($sessionID);

            #_session_log(sprintf "%20s from %16s logged out at %30s (ip changed to %16s).\n", $userid,$ip,(strftime "%c",localtime), $info{'newip'});
            $sessionID = undef;
            $userid    = undef;
        }
        else {
            $cookie = $query->cookie(
                -name     => 'CGISESSID',
                -value    => $session->id,
                -HttpOnly => 1
            );
            $session->param( 'lasttime', time() );
            unless ( $sessiontype && $sessiontype eq 'anon' ) {    #if this is an anonymous session, we want to update the session, but not behave as if they are logged in...
                $flags = haspermission( $userid, $flagsrequired );
                if ($flags) {
                    $loggedin = 1;
                } else {
                    $info{'nopermission'} = 1;
                }
            }
        }
    }
    unless ( $userid || $sessionID ) {

        #we initiate a session prior to checking for a username to allow for anonymous sessions...
        my $session = get_session("") or die "Auth ERROR: Cannot get_session()";

        # Save anonymous search history in new session so it can be retrieved
        # by get_template_and_user to store it in user's search history after
        # a successful login.
        if ($anon_search_history) {
            $session->param( 'search_history', $anon_search_history );
        }

        my $sessionID = $session->id;
        C4::Context->_new_userenv($sessionID);
        $cookie = $query->cookie(
            -name     => 'CGISESSID',
            -value    => $session->id,
            -HttpOnly => 1
        );
        $userid = $q_userid;
        my $pki_field = C4::Context->preference('AllowPKIAuth');
        if ( !defined($pki_field) ) {
            print STDERR "ERROR: Missing system preference AllowPKIAuth.\n";
            $pki_field = 'None';
        }
        if ( ( $cas && $query->param('ticket') )
            || $userid
            || ( $shib && $shib_login )
            || $pki_field ne 'None'
            || $persona )
        {
            my $password    = $query->param('password');
            my $shibSuccess = 0;

            my ( $return, $cardnumber );

            # If shib is enabled and we have a shib login, does the login match a valid koha user
            if ( $shib && $shib_login && $type eq 'opac' ) {
                my $retuserid;

                # Do not pass password here, else shib will not be checked in checkpw.
                ( $return, $cardnumber, $retuserid ) = checkpw( $dbh, $userid, undef, $query );
                $userid      = $retuserid;
                $shibSuccess = $return;
                $info{'invalidShibLogin'} = 1 unless ($return);
            }

            # If shib login and match were successful, skip further login methods
            unless ($shibSuccess) {
                if ( $cas && $query->param('ticket') ) {
                    my $retuserid;
                    ( $return, $cardnumber, $retuserid ) =
                      checkpw( $dbh, $userid, $password, $query, $type );
                    $userid = $retuserid;
                    $info{'invalidCasLogin'} = 1 unless ($return);
                }

                elsif ($persona) {
                    my $value = $persona;

                    # If we're looking up the email, there's a chance that the person
                    # doesn't have a userid. So if there is none, we pass along the
                    # borrower number, and the bits of code that need to know the user
                    # ID will have to be smart enough to handle that.
                    require C4::Members;
                    my @users_info = C4::Members::GetBorrowersWithEmail($value);
                    if (@users_info) {

                        # First the userid, then the borrowernum
                        $value = $users_info[0][1] || $users_info[0][0];
                    }
                    else {
                        undef $value;
                    }
                    $return = $value ? 1 : 0;
                    $userid = $value;
                }

                elsif (
                    ( $pki_field eq 'Common Name' && $ENV{'SSL_CLIENT_S_DN_CN'} )
                    || ( $pki_field eq 'emailAddress'
                        && $ENV{'SSL_CLIENT_S_DN_Email'} )
                  )
                {
                    my $value;
                    if ( $pki_field eq 'Common Name' ) {
                        $value = $ENV{'SSL_CLIENT_S_DN_CN'};
                    }
                    elsif ( $pki_field eq 'emailAddress' ) {
                        $value = $ENV{'SSL_CLIENT_S_DN_Email'};

                        # If we're looking up the email, there's a chance that the person
                        # doesn't have a userid. So if there is none, we pass along the
                        # borrower number, and the bits of code that need to know the user
                        # ID will have to be smart enough to handle that.
                        require C4::Members;
                        my @users_info = C4::Members::GetBorrowersWithEmail($value);
                        if (@users_info) {

                            # First the userid, then the borrowernum
                            $value = $users_info[0][1] || $users_info[0][0];
                        } else {
                            undef $value;
                        }
                    }

                    $return = $value ? 1 : 0;
                    $userid = $value;

                }
                else {
                    my $retuserid;
                    ( $return, $cardnumber, $retuserid ) =
                      checkpw( $dbh, $userid, $password, $query, $type );
                    $userid = $retuserid if ($retuserid);
                    $info{'invalid_username_or_password'} = 1 unless ($return);
                }
            }

            # $return: 1 = valid user, 2 = superlibrarian
            if ($return) {

                #_session_log(sprintf "%20s from %16s logged in  at %30s.\n", $userid,$ENV{'REMOTE_ADDR'},(strftime '%c', localtime));
                if ( $flags = haspermission( $userid, $flagsrequired ) ) {
                    $loggedin = 1;
                }
                else {
                    $info{'nopermission'} = 1;
                    C4::Context->_unset_userenv($sessionID);
                }
                my ( $borrowernumber, $firstname, $surname, $userflags,
                    $branchcode, $branchname, $branchprinter, $emailaddress );

                if ( $return == 1 ) {
                    my $select = "
                    SELECT borrowernumber, firstname, surname, flags, borrowers.branchcode,
                    branches.branchname    as branchname,
                    branches.branchprinter as branchprinter,
                    email
                    FROM borrowers
                    LEFT JOIN branches on borrowers.branchcode=branches.branchcode
                    ";
                    my $sth = $dbh->prepare("$select where userid=?");
                    $sth->execute($userid);
                    unless ( $sth->rows ) {
                        $debug and print STDERR "AUTH_1: no rows for userid='$userid'\n";
                        $sth = $dbh->prepare("$select where cardnumber=?");
                        $sth->execute($cardnumber);

                        unless ( $sth->rows ) {
                            $debug and print STDERR "AUTH_2a: no rows for cardnumber='$cardnumber'\n";
                            $sth->execute($userid);
                            unless ( $sth->rows ) {
                                $debug and print STDERR "AUTH_2b: no rows for userid='$userid' AS cardnumber\n";
                            }
                        }
                    }
                    if ( $sth->rows ) {
                        ( $borrowernumber, $firstname, $surname, $userflags,
                            $branchcode, $branchname, $branchprinter, $emailaddress ) = $sth->fetchrow;
                        $debug and print STDERR "AUTH_3 results: " .
                          "$cardnumber,$borrowernumber,$userid,$firstname,$surname,$userflags,$branchcode,$emailaddress\n";
                    } else {
                        print STDERR "AUTH_3: no results for userid='$userid', cardnumber='$cardnumber'.\n";
                    }

                    # launch a sequence to check if we have a ip for the branch, i
                    # if we have one we replace the branchcode of the userenv by the branch bound in the ip.

                    my $ip = $ENV{'REMOTE_ADDR'};

                    # if they specify at login, use that
                    if ( $query->param('branch') ) {
                        $branchcode = $query->param('branch');
                        $branchname = GetBranchName($branchcode);
                    }
                    my $branches = GetBranches();
                    if ( C4::Context->boolean_preference('IndependentBranches') && C4::Context->boolean_preference('Autolocation') ) {

                        # we have to check they are coming from the right ip range
                        my $domain = $branches->{$branchcode}->{'branchip'};
                        if ( $ip !~ /^$domain/ ) {
                            $loggedin = 0;
                            $info{'wrongip'} = 1;
                        }
                    }

                    my @branchesloop;
                    foreach my $br ( keys %$branches ) {

                        #     now we work with the treatment of ip
                        my $domain = $branches->{$br}->{'branchip'};
                        if ( $domain && $ip =~ /^$domain/ ) {
                            $branchcode = $branches->{$br}->{'branchcode'};

                            # new op dev : add the branchprinter and branchname in the cookie
                            $branchprinter = $branches->{$br}->{'branchprinter'};
                            $branchname    = $branches->{$br}->{'branchname'};
                        }
                    }
                    $session->param( 'number',       $borrowernumber );
                    $session->param( 'id',           $userid );
                    $session->param( 'cardnumber',   $cardnumber );
                    $session->param( 'firstname',    $firstname );
                    $session->param( 'surname',      $surname );
                    $session->param( 'branch',       $branchcode );
                    $session->param( 'branchname',   $branchname );
                    $session->param( 'flags',        $userflags );
                    $session->param( 'emailaddress', $emailaddress );
                    $session->param( 'ip',           $session->remote_addr() );
                    $session->param( 'lasttime',     time() );
                    $session->param( 'shibboleth',   $shibSuccess );
                    $debug and printf STDERR "AUTH_4: (%s)\t%s %s - %s\n", map { $session->param($_) } qw(cardnumber firstname surname branch);
                }
                elsif ( $return == 2 ) {

                    #We suppose the user is the superlibrarian
                    $borrowernumber = 0;
                    $session->param( 'number',       0 );
                    $session->param( 'id',           C4::Context->config('user') );
                    $session->param( 'cardnumber',   C4::Context->config('user') );
                    $session->param( 'firstname',    C4::Context->config('user') );
                    $session->param( 'surname',      C4::Context->config('user') );
                    $session->param( 'branch',       'NO_LIBRARY_SET' );
                    $session->param( 'branchname',   'NO_LIBRARY_SET' );
                    $session->param( 'flags',        1 );
                    $session->param( 'emailaddress', C4::Context->preference('KohaAdminEmailAddress') );
                    $session->param( 'ip',           $session->remote_addr() );
                    $session->param( 'lasttime',     time() );
                }
                if ($persona) {
                    $session->param( 'persona', 1 );
                }
                C4::Context->set_userenv(
                    $session->param('number'),       $session->param('id'),
                    $session->param('cardnumber'),   $session->param('firstname'),
                    $session->param('surname'),      $session->param('branch'),
                    $session->param('branchname'),   $session->param('flags'),
                    $session->param('emailaddress'), $session->param('branchprinter'),
                    $session->param('persona'),      $session->param('shibboleth')
                );

            }
            # $return: 0 = invalid user
            # reset to anonymous session
            else {
                $debug and warn "Login failed, resetting anonymous session...";
                if ($userid) {
                    $info{'invalid_username_or_password'} = 1;
                    C4::Context->_unset_userenv($sessionID);
                }
                $session->param( 'lasttime', time() );
                $session->param( 'ip',       $session->remote_addr() );
                $session->param( 'sessiontype', 'anon' );
            }
        }    # END if ( $userid    = $query->param('userid') )
        elsif ( $type eq "opac" ) {

            # if we are here this is an anonymous session; add public lists to it and a few other items...
            # anonymous sessions are created only for the OPAC
            $debug and warn "Initiating an anonymous session...";

            # setting a couple of other session vars...
            $session->param( 'ip',          $session->remote_addr() );
            $session->param( 'lasttime',    time() );
            $session->param( 'sessiontype', 'anon' );
        }
    }    # END unless ($userid)

    # finished authentification, now respond
    if ( $loggedin || $authnotrequired )
    {
        # successful login
        unless ($cookie) {
            $cookie = $query->cookie(
                -name     => 'CGISESSID',
                -value    => '',
                -HttpOnly => 1
            );
        }
        return ( $userid, $cookie, $sessionID, $flags );
    }

    #
    #
    # AUTH rejected, show the login/password template, after checking the DB.
    #
    #

    # get the inputs from the incoming query
    my @inputs = ();
    foreach my $name ( param $query) {
        (next) if ( $name eq 'userid' || $name eq 'password' || $name eq 'ticket' );
        my $value = $query->param($name);
        push @inputs, { name => $name, value => $value };
    }

    my $LibraryNameTitle = C4::Context->preference("LibraryName");
    $LibraryNameTitle =~ s/<(?:\/?)(?:br|p)\s*(?:\/?)>/ /sgi;
    $LibraryNameTitle =~ s/<(?:[^<>'"]|'(?:[^']*)'|"(?:[^"]*)")*>//sg;

    my $template_name = ( $type eq 'opac' ) ? 'opac-auth.tt' : 'auth.tt';
    my $template = C4::Templates::gettemplate( $template_name, $type, $query );
    $template->param(
        branchloop                            => GetBranchesLoop(),
        OpacAdditionalStylesheet                   => C4::Context->preference("OpacAdditionalStylesheet"),
        opaclayoutstylesheet                  => C4::Context->preference("opaclayoutstylesheet"),
        login                                 => 1,
        INPUTS                                => \@inputs,
        script_name                           => _get_script_name(),
        casAuthentication                     => C4::Context->preference("casAuthentication"),
        shibbolethAuthentication              => $shib,
        SessionRestrictionByIP                => C4::Context->preference("SessionRestrictionByIP"),
        suggestion                            => C4::Context->preference("suggestion"),
        virtualshelves                        => C4::Context->preference("virtualshelves"),
        LibraryName                           => "" . C4::Context->preference("LibraryName"),
        LibraryNameTitle                      => "" . $LibraryNameTitle,
        opacuserlogin                         => C4::Context->preference("opacuserlogin"),
        OpacNav                               => C4::Context->preference("OpacNav"),
        OpacNavRight                          => C4::Context->preference("OpacNavRight"),
        OpacNavBottom                         => C4::Context->preference("OpacNavBottom"),
        opaccredits                           => C4::Context->preference("opaccredits"),
        OpacFavicon                           => C4::Context->preference("OpacFavicon"),
        opacreadinghistory                    => C4::Context->preference("opacreadinghistory"),
        opaclanguagesdisplay                  => C4::Context->preference("opaclanguagesdisplay"),
        OPACUserJS                            => C4::Context->preference("OPACUserJS"),
        opacbookbag                           => "" . C4::Context->preference("opacbookbag"),
        OpacCloud                             => C4::Context->preference("OpacCloud"),
        OpacTopissue                          => C4::Context->preference("OpacTopissue"),
        OpacAuthorities                       => C4::Context->preference("OpacAuthorities"),
        OpacBrowser                           => C4::Context->preference("OpacBrowser"),
        opacheader                            => C4::Context->preference("opacheader"),
        TagsEnabled                           => C4::Context->preference("TagsEnabled"),
        OPACUserCSS                           => C4::Context->preference("OPACUserCSS"),
        intranetcolorstylesheet               => C4::Context->preference("intranetcolorstylesheet"),
        intranetstylesheet                    => C4::Context->preference("intranetstylesheet"),
        intranetbookbag                       => C4::Context->preference("intranetbookbag"),
        IntranetNav                           => C4::Context->preference("IntranetNav"),
        IntranetFavicon                       => C4::Context->preference("IntranetFavicon"),
        IntranetUserCSS                       => C4::Context->preference("IntranetUserCSS"),
        IntranetUserJS                        => C4::Context->preference("IntranetUserJS"),
        IndependentBranches                   => C4::Context->preference("IndependentBranches"),
        AutoLocation                          => C4::Context->preference("AutoLocation"),
        wrongip                               => $info{'wrongip'},
        PatronSelfRegistration                => C4::Context->preference("PatronSelfRegistration"),
        PatronSelfRegistrationDefaultCategory => C4::Context->preference("PatronSelfRegistrationDefaultCategory"),
        persona                               => C4::Context->preference("Persona"),
        opac_css_override                     => $ENV{'OPAC_CSS_OVERRIDE'},
    );

    $template->param( SCO_login => 1 ) if ( $query->param('sco_user_login') );
    $template->param( OpacPublic => C4::Context->preference("OpacPublic") );
    $template->param( loginprompt => 1 ) unless $info{'nopermission'};

    if ( $type eq 'opac' ) {
        require Koha::Virtualshelves;
        my $some_public_shelves = Koha::Virtualshelves->get_some_shelves(
            {
                category       => 2,
            }
        );
        $template->param(
            some_public_shelves  => $some_public_shelves,
        );
    }

    if ($cas) {

        # Is authentication against multiple CAS servers enabled?
        if ( C4::Auth_with_cas::multipleAuth && !$casparam ) {
            my $casservers = C4::Auth_with_cas::getMultipleAuth();
            my @tmplservers;
            foreach my $key ( keys %$casservers ) {
                push @tmplservers, { name => $key, value => login_cas_url( $query, $key, $type ) . "?cas=$key" };
            }
            $template->param(
                casServersLoop => \@tmplservers
            );
        } else {
            $template->param(
                casServerUrl => login_cas_url($query, undef, $type),
            );
        }

        $template->param(
            invalidCasLogin => $info{'invalidCasLogin'}
        );
    }

    if ($shib) {
        $template->param(
            shibbolethAuthentication => $shib,
            shibbolethLoginUrl       => login_shib_url($query),
        );
    }

    if (C4::Context->preference('GoogleOpenIDConnect')) {
        if ($query->param("OpenIDConnectFailed")) {
            my $reason = $query->param('OpenIDConnectFailed');
            $template->param(invalidGoogleOpenIDConnectLogin => $reason);
        }
    }

    $template->param(
        LibraryName => C4::Context->preference("LibraryName"),
    );
    $template->param(%info);

    #    $cookie = $query->cookie(CGISESSID => $session->id
    #   );
    print $query->header(
        {   type              => 'text/html',
            charset           => 'utf-8',
            cookie            => $cookie,
            'X-Frame-Options' => 'SAMEORIGIN'
        }
      ),
      $template->output;
    safe_exit;
}

=head2 check_api_auth

  ($status, $cookie, $sessionId) = check_api_auth($query, $userflags);

Given a CGI query containing the parameters 'userid' and 'password' and/or a session
cookie, determine if the user has the privileges specified by C<$userflags>.

C<check_api_auth> is is meant for authenticating users of web services, and
consequently will always return and will not attempt to redirect the user
agent.

If a valid session cookie is already present, check_api_auth will return a status
of "ok", the cookie, and the Koha session ID.

If no session cookie is present, check_api_auth will check the 'userid' and 'password
parameters and create a session cookie and Koha session if the supplied credentials
are OK.

Possible return values in C<$status> are:

=over

=item "ok" -- user authenticated; C<$cookie> and C<$sessionid> have valid values.

=item "failed" -- credentials are not correct; C<$cookie> and C<$sessionid> are undef

=item "maintenance" -- DB is in maintenance mode; no login possible at the moment

=item "expired -- session cookie has expired; API user should resubmit userid and password

=back

=cut

sub check_api_auth {
    my $query         = shift;
    my $flagsrequired = shift;

    my $dbh     = C4::Context->dbh;
    my $timeout = _timeout_syspref();

    unless ( C4::Context->preference('Version') ) {

        # database has not been installed yet
        return ( "maintenance", undef, undef );
    }
    my $kohaversion = Koha::version();
    $kohaversion =~ s/(.*\..*)\.(.*)\.(.*)/$1$2$3/;
    if ( C4::Context->preference('Version') < $kohaversion ) {

        # database in need of version update; assume that
        # no API should be called while databsae is in
        # this condition.
        return ( "maintenance", undef, undef );
    }

    # FIXME -- most of what follows is a copy-and-paste
    # of code from checkauth.  There is an obvious need
    # for refactoring to separate the various parts of
    # the authentication code, but as of 2007-11-19 this
    # is deferred so as to not introduce bugs into the
    # regular authentication code for Koha 3.0.

    # see if we have a valid session cookie already
    # however, if a userid parameter is present (i.e., from
    # a form submission, assume that any current cookie
    # is to be ignored
    my $sessionID = undef;
    unless ( $query->param('userid') ) {
        $sessionID = $query->cookie("CGISESSID");
    }
    if ( $sessionID && not( $cas && $query->param('PT') ) ) {
        my $session = get_session($sessionID);
        C4::Context->_new_userenv($sessionID);
        if ($session) {
            C4::Context->set_userenv(
                $session->param('number'),       $session->param('id'),
                $session->param('cardnumber'),   $session->param('firstname'),
                $session->param('surname'),      $session->param('branch'),
                $session->param('branchname'),   $session->param('flags'),
                $session->param('emailaddress'), $session->param('branchprinter')
            );

            my $ip       = $session->param('ip');
            my $lasttime = $session->param('lasttime');
            my $userid   = $session->param('id');
            if ( $lasttime < time() - $timeout ) {

                # time out
                $session->delete();
                $session->flush;
                C4::Context->_unset_userenv($sessionID);
                $userid    = undef;
                $sessionID = undef;
                return ( "expired", undef, undef );
            } elsif ( C4::Context->preference('SessionRestrictionByIP') && $ip ne $ENV{'REMOTE_ADDR'} ) {

                # IP address changed
                $session->delete();
                $session->flush;
                C4::Context->_unset_userenv($sessionID);
                $userid    = undef;
                $sessionID = undef;
                return ( "expired", undef, undef );
            } else {
                my $cookie = $query->cookie(
                    -name     => 'CGISESSID',
                    -value    => $session->id,
                    -HttpOnly => 1,
                );
                $session->param( 'lasttime', time() );
                my $flags = haspermission( $userid, $flagsrequired );
                if ($flags) {
                    return ( "ok", $cookie, $sessionID );
                } else {
                    $session->delete();
                    $session->flush;
                    C4::Context->_unset_userenv($sessionID);
                    $userid    = undef;
                    $sessionID = undef;
                    return ( "failed", undef, undef );
                }
            }
        } else {
            return ( "expired", undef, undef );
        }
    } else {

        # new login
        my $userid   = $query->param('userid');
        my $password = $query->param('password');
        my ( $return, $cardnumber );

        # Proxy CAS auth
        if ( $cas && $query->param('PT') ) {
            my $retuserid;
            $debug and print STDERR "## check_api_auth - checking CAS\n";

            # In case of a CAS authentication, we use the ticket instead of the password
            my $PT = $query->param('PT');
            ( $return, $cardnumber, $userid ) = check_api_auth_cas( $dbh, $PT, $query );    # EXTERNAL AUTH
        } else {

            # User / password auth
            unless ( $userid and $password ) {

                # caller did something wrong, fail the authenticateion
                return ( "failed", undef, undef );
            }
            ( $return, $cardnumber ) = checkpw( $dbh, $userid, $password, $query );
        }

        if ( $return and haspermission( $userid, $flagsrequired ) ) {
            my $session = get_session("");
            return ( "failed", undef, undef ) unless $session;

            my $sessionID = $session->id;
            C4::Context->_new_userenv($sessionID);
            my $cookie = $query->cookie(
                -name     => 'CGISESSID',
                -value    => $sessionID,
                -HttpOnly => 1,
            );
            if ( $return == 1 ) {
                my (
                    $borrowernumber, $firstname,  $surname,
                    $userflags,      $branchcode, $branchname,
                    $branchprinter,  $emailaddress
                );
                my $sth =
                  $dbh->prepare(
"select borrowernumber, firstname, surname, flags, borrowers.branchcode, branches.branchname as branchname,branches.branchprinter as branchprinter, email from borrowers left join branches on borrowers.branchcode=branches.branchcode where userid=?"
                  );
                $sth->execute($userid);
                (
                    $borrowernumber, $firstname,  $surname,
                    $userflags,      $branchcode, $branchname,
                    $branchprinter,  $emailaddress
                ) = $sth->fetchrow if ( $sth->rows );

                unless ( $sth->rows ) {
                    my $sth = $dbh->prepare(
"select borrowernumber, firstname, surname, flags, borrowers.branchcode, branches.branchname as branchname, branches.branchprinter as branchprinter, email from borrowers left join branches on borrowers.branchcode=branches.branchcode where cardnumber=?"
                    );
                    $sth->execute($cardnumber);
                    (
                        $borrowernumber, $firstname,  $surname,
                        $userflags,      $branchcode, $branchname,
                        $branchprinter,  $emailaddress
                    ) = $sth->fetchrow if ( $sth->rows );

                    unless ( $sth->rows ) {
                        $sth->execute($userid);
                        (
                            $borrowernumber, $firstname,  $surname,       $userflags,
                            $branchcode,     $branchname, $branchprinter, $emailaddress
                        ) = $sth->fetchrow if ( $sth->rows );
                    }
                }

                my $ip = $ENV{'REMOTE_ADDR'};

                # if they specify at login, use that
                if ( $query->param('branch') ) {
                    $branchcode = $query->param('branch');
                    $branchname = GetBranchName($branchcode);
                }
                my $branches = GetBranches();
                my @branchesloop;
                foreach my $br ( keys %$branches ) {

                    #     now we work with the treatment of ip
                    my $domain = $branches->{$br}->{'branchip'};
                    if ( $domain && $ip =~ /^$domain/ ) {
                        $branchcode = $branches->{$br}->{'branchcode'};

                        # new op dev : add the branchprinter and branchname in the cookie
                        $branchprinter = $branches->{$br}->{'branchprinter'};
                        $branchname    = $branches->{$br}->{'branchname'};
                    }
                }
                $session->param( 'number',       $borrowernumber );
                $session->param( 'id',           $userid );
                $session->param( 'cardnumber',   $cardnumber );
                $session->param( 'firstname',    $firstname );
                $session->param( 'surname',      $surname );
                $session->param( 'branch',       $branchcode );
                $session->param( 'branchname',   $branchname );
                $session->param( 'flags',        $userflags );
                $session->param( 'emailaddress', $emailaddress );
                $session->param( 'ip',           $session->remote_addr() );
                $session->param( 'lasttime',     time() );
            } elsif ( $return == 2 ) {

                #We suppose the user is the superlibrarian
                $session->param( 'number',       0 );
                $session->param( 'id',           C4::Context->config('user') );
                $session->param( 'cardnumber',   C4::Context->config('user') );
                $session->param( 'firstname',    C4::Context->config('user') );
                $session->param( 'surname',      C4::Context->config('user') );
                $session->param( 'branch',       'NO_LIBRARY_SET' );
                $session->param( 'branchname',   'NO_LIBRARY_SET' );
                $session->param( 'flags',        1 );
                $session->param( 'emailaddress', C4::Context->preference('KohaAdminEmailAddress') );
                $session->param( 'ip',           $session->remote_addr() );
                $session->param( 'lasttime',     time() );
            }
            C4::Context->set_userenv(
                $session->param('number'),       $session->param('id'),
                $session->param('cardnumber'),   $session->param('firstname'),
                $session->param('surname'),      $session->param('branch'),
                $session->param('branchname'),   $session->param('flags'),
                $session->param('emailaddress'), $session->param('branchprinter')
            );
            return ( "ok", $cookie, $sessionID );
        } else {
            return ( "failed", undef, undef );
        }
    }
}

=head2 check_cookie_auth

  ($status, $sessionId) = check_api_auth($cookie, $userflags);

Given a CGISESSID cookie set during a previous login to Koha, determine
if the user has the privileges specified by C<$userflags>.

C<check_cookie_auth> is meant for authenticating special services
such as tools/upload-file.pl that are invoked by other pages that
have been authenticated in the usual way.

Possible return values in C<$status> are:

=over

=item "ok" -- user authenticated; C<$sessionID> have valid values.

=item "failed" -- credentials are not correct; C<$sessionid> are undef

=item "maintenance" -- DB is in maintenance mode; no login possible at the moment

=item "expired -- session cookie has expired; API user should resubmit userid and password

=back

=cut

sub check_cookie_auth {
    my $cookie        = shift;
    my $flagsrequired = shift;

    my $dbh     = C4::Context->dbh;
    my $timeout = _timeout_syspref();

    unless ( C4::Context->preference('Version') ) {

        # database has not been installed yet
        return ( "maintenance", undef );
    }
    my $kohaversion = Koha::version();
    $kohaversion =~ s/(.*\..*)\.(.*)\.(.*)/$1$2$3/;
    if ( C4::Context->preference('Version') < $kohaversion ) {

        # database in need of version update; assume that
        # no API should be called while databsae is in
        # this condition.
        return ( "maintenance", undef );
    }

    # FIXME -- most of what follows is a copy-and-paste
    # of code from checkauth.  There is an obvious need
    # for refactoring to separate the various parts of
    # the authentication code, but as of 2007-11-23 this
    # is deferred so as to not introduce bugs into the
    # regular authentication code for Koha 3.0.

    # see if we have a valid session cookie already
    # however, if a userid parameter is present (i.e., from
    # a form submission, assume that any current cookie
    # is to be ignored
    unless ( defined $cookie and $cookie ) {
        return ( "failed", undef );
    }
    my $sessionID = $cookie;
    my $session   = get_session($sessionID);
    C4::Context->_new_userenv($sessionID);
    if ($session) {
        C4::Context->set_userenv(
            $session->param('number'),       $session->param('id'),
            $session->param('cardnumber'),   $session->param('firstname'),
            $session->param('surname'),      $session->param('branch'),
            $session->param('branchname'),   $session->param('flags'),
            $session->param('emailaddress'), $session->param('branchprinter')
        );

        my $ip       = $session->param('ip');
        my $lasttime = $session->param('lasttime');
        my $userid   = $session->param('id');
        if ( $lasttime < time() - $timeout ) {

            # time out
            $session->delete();
            $session->flush;
            C4::Context->_unset_userenv($sessionID);
            $userid    = undef;
            $sessionID = undef;
            return ("expired", undef);
        } elsif ( C4::Context->preference('SessionRestrictionByIP') && $ip ne $ENV{'REMOTE_ADDR'} ) {

            # IP address changed
            $session->delete();
            $session->flush;
            C4::Context->_unset_userenv($sessionID);
            $userid    = undef;
            $sessionID = undef;
            return ( "expired", undef );
        } else {
            $session->param( 'lasttime', time() );
            my $flags = haspermission( $userid, $flagsrequired );
            if ($flags) {
                return ( "ok", $sessionID );
            } else {
                $session->delete();
                $session->flush;
                C4::Context->_unset_userenv($sessionID);
                $userid    = undef;
                $sessionID = undef;
                return ( "failed", undef );
            }
        }
    } else {
        return ( "expired", undef );
    }
}

=head2 get_session

  use CGI::Session;
  my $session = get_session($sessionID);

Given a session ID, retrieve the CGI::Session object used to store
the session's state.  The session object can be used to store
data that needs to be accessed by different scripts during a
user's session.

If the C<$sessionID> parameter is an empty string, a new session
will be created.

=cut

sub get_session {
    my $sessionID      = shift;
    my $storage_method = C4::Context->preference('SessionStorage');
    my $dbh            = C4::Context->dbh;
    my $session;
    if ( $storage_method eq 'mysql' ) {
        $session = new CGI::Session( "driver:MySQL;serializer:yaml;id:md5", $sessionID, { Handle => $dbh } );
    }
    elsif ( $storage_method eq 'Pg' ) {
        $session = new CGI::Session( "driver:PostgreSQL;serializer:yaml;id:md5", $sessionID, { Handle => $dbh } );
    }
    elsif ( $storage_method eq 'memcached' && C4::Context->ismemcached ) {
        $session = new CGI::Session( "driver:memcached;serializer:yaml;id:md5", $sessionID, { Memcached => C4::Context->memcached } );
    }
    else {
        # catch all defaults to tmp should work on all systems
        my $dir = File::Spec->tmpdir;
        my $instance = C4::Context->config( 'database' ); #actually for packages not exactly the instance name, but generally safer to leave it as it is
        $session = new CGI::Session( "driver:File;serializer:yaml;id:md5", $sessionID, { Directory => "$dir/cgisess_$instance" } );
    }
    return $session;
}

sub checkpw {
    my ( $dbh, $userid, $password, $query, $type ) = @_;
    $type = 'opac' unless $type;
    if ($ldap) {
        $debug and print STDERR "## checkpw - checking LDAP\n";
        my ( $retval, $retcard, $retuserid ) = checkpw_ldap(@_);    # EXTERNAL AUTH
        return 0 if $retval == -1;                                  # Incorrect password for LDAP login attempt
        ($retval) and return ( $retval, $retcard, $retuserid );
    }

    if ( $cas && $query && $query->param('ticket') ) {
        $debug and print STDERR "## checkpw - checking CAS\n";

        # In case of a CAS authentication, we use the ticket instead of the password
        my $ticket = $query->param('ticket');
        $query->delete('ticket');                                   # remove ticket to come back to original URL
        my ( $retval, $retcard, $retuserid ) = checkpw_cas( $dbh, $ticket, $query, $type );    # EXTERNAL AUTH
        ($retval) and return ( $retval, $retcard, $retuserid );
        return 0;
    }

    # If we are in a shibboleth session (shibboleth is enabled, and a shibboleth match attribute is present)
    # Check for password to asertain whether we want to be testing against shibboleth or another method this
    # time around.
    if ( $shib && $shib_login && !$password ) {

        $debug and print STDERR "## checkpw - checking Shibboleth\n";

        # In case of a Shibboleth authentication, we expect a shibboleth user attribute
        # (defined under shibboleth mapping in koha-conf.xml) to contain the login of the
        # shibboleth-authenticated user

        # Then, we check if it matches a valid koha user
        if ($shib_login) {
            my ( $retval, $retcard, $retuserid ) = C4::Auth_with_shibboleth::checkpw_shib($shib_login);    # EXTERNAL AUTH
            ($retval) and return ( $retval, $retcard, $retuserid );
            return 0;
        }
    }

    # INTERNAL AUTH
    return checkpw_internal(@_)
}

sub checkpw_internal {
    my ( $dbh, $userid, $password ) = @_;

    $password = Encode::encode( 'UTF-8', $password )
      if Encode::is_utf8($password);

    if ( $userid && $userid eq C4::Context->config('user') ) {
        if ( $password && $password eq C4::Context->config('pass') ) {

            # Koha superuser account
            #     C4::Context->set_userenv(0,0,C4::Context->config('user'),C4::Context->config('user'),C4::Context->config('user'),"",1);
            return 2;
        }
        else {
            return 0;
        }
    }

    my $sth =
      $dbh->prepare(
        "select password,cardnumber,borrowernumber,userid,firstname,surname,borrowers.branchcode,branches.branchname,flags from borrowers join branches on borrowers.branchcode=branches.branchcode where userid=?"
      );
    $sth->execute($userid);
    if ( $sth->rows ) {
        my ( $stored_hash, $cardnumber, $borrowernumber, $userid, $firstname,
            $surname, $branchcode, $branchname, $flags )
          = $sth->fetchrow;

        if ( checkpw_hash( $password, $stored_hash ) ) {

            C4::Context->set_userenv( "$borrowernumber", $userid, $cardnumber,
                $firstname, $surname, $branchcode, $branchname, $flags );
            return 1, $cardnumber, $userid;
        }
    }
    $sth =
      $dbh->prepare(
        "select password,cardnumber,borrowernumber,userid,firstname,surname,borrowers.branchcode,branches.branchname,flags from borrowers join branches on borrowers.branchcode=branches.branchcode where cardnumber=?"
      );
    $sth->execute($userid);
    if ( $sth->rows ) {
        my ( $stored_hash, $cardnumber, $borrowernumber, $userid, $firstname,
            $surname, $branchcode, $branchname, $flags )
          = $sth->fetchrow;

        if ( checkpw_hash( $password, $stored_hash ) ) {

            C4::Context->set_userenv( $borrowernumber, $userid, $cardnumber,
                $firstname, $surname, $branchcode, $branchname, $flags );
            return 1, $cardnumber, $userid;
        }
    }
    if ( $userid && $userid eq 'demo'
        && "$password" eq 'demo'
        && C4::Context->config('demo') )
    {

        # DEMO => the demo user is allowed to do everything (if demo set to 1 in koha.conf
        # some features won't be effective : modify systempref, modify MARC structure,
        return 2;
    }
    return 0;
}

sub checkpw_hash {
    my ( $password, $stored_hash ) = @_;

    return if $stored_hash eq '!';

    # check what encryption algorithm was implemented: Bcrypt - if the hash starts with '$2' it is Bcrypt else md5
    my $hash;
    if ( substr( $stored_hash, 0, 2 ) eq '$2' ) {
        $hash = hash_password( $password, $stored_hash );
    } else {
        $hash = md5_base64($password);
    }
    return $hash eq $stored_hash;
}

=head2 getuserflags

    my $authflags = getuserflags($flags, $userid, [$dbh]);

Translates integer flags into permissions strings hash.

C<$flags> is the integer userflags value ( borrowers.userflags )
C<$userid> is the members.userid, used for building subpermissions
C<$authflags> is a hashref of permissions

=cut

sub getuserflags {
    my $flags  = shift;
    my $userid = shift;
    my $dbh    = @_ ? shift : C4::Context->dbh;
    my $userflags;
    {
        # I don't want to do this, but if someone logs in as the database
        # user, it would be preferable not to spam them to death with
        # numeric warnings. So, we make $flags numeric.
        no warnings 'numeric';
        $flags += 0;
    }
    my $sth = $dbh->prepare("SELECT bit, flag, defaulton FROM userflags");
    $sth->execute;

    while ( my ( $bit, $flag, $defaulton ) = $sth->fetchrow ) {
        if ( ( $flags & ( 2**$bit ) ) || $defaulton ) {
            $userflags->{$flag} = 1;
        }
        else {
            $userflags->{$flag} = 0;
        }
    }

    # get subpermissions and merge with top-level permissions
    my $user_subperms = get_user_subpermissions($userid);
    foreach my $module ( keys %$user_subperms ) {
        next if $userflags->{$module} == 1;    # user already has permission for everything in this module
        $userflags->{$module} = $user_subperms->{$module};
    }

    return $userflags;
}

=head2 get_user_subpermissions

  $user_perm_hashref = get_user_subpermissions($userid);

Given the userid (note, not the borrowernumber) of a staff user,
return a hashref of hashrefs of the specific subpermissions
accorded to the user.  An example return is

 {
    tools => {
        export_catalog => 1,
        import_patrons => 1,
    }
 }

The top-level hash-key is a module or function code from
userflags.flag, while the second-level key is a code
from permissions.

The results of this function do not give a complete picture
of the functions that a staff user can access; it is also
necessary to check borrowers.flags.

=cut

sub get_user_subpermissions {
    my $userid = shift;

    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare( "SELECT flag, user_permissions.code
                             FROM user_permissions
                             JOIN permissions USING (module_bit, code)
                             JOIN userflags ON (module_bit = bit)
                             JOIN borrowers USING (borrowernumber)
                             WHERE userid = ?" );
    $sth->execute($userid);

    my $user_perms = {};
    while ( my $perm = $sth->fetchrow_hashref ) {
        $user_perms->{ $perm->{'flag'} }->{ $perm->{'code'} } = 1;
    }
    return $user_perms;
}

=head2 get_all_subpermissions

  my $perm_hashref = get_all_subpermissions();

Returns a hashref of hashrefs defining all specific
permissions currently defined.  The return value
has the same structure as that of C<get_user_subpermissions>,
except that the innermost hash value is the description
of the subpermission.

=cut

sub get_all_subpermissions {
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare( "SELECT flag, code
                             FROM permissions
                             JOIN userflags ON (module_bit = bit)" );
    $sth->execute();

    my $all_perms = {};
    while ( my $perm = $sth->fetchrow_hashref ) {
        $all_perms->{ $perm->{'flag'} }->{ $perm->{'code'} } = 1;
    }
    return $all_perms;
}

=head2 haspermission

  $flags = ($userid, $flagsrequired);

C<$userid> the userid of the member
C<$flags> is a hashref of required flags like C<$borrower-&lt;{authflags}> 

Returns member's flags or 0 if a permission is not met.

=cut

sub haspermission {
    my ( $userid, $flagsrequired ) = @_;
    my $sth = C4::Context->dbh->prepare("SELECT flags FROM borrowers WHERE userid=?");
    $sth->execute($userid);
    my $row = $sth->fetchrow();
    my $flags = getuserflags( $row, $userid );
    if ( $userid eq C4::Context->config('user') ) {

        # Super User Account from /etc/koha.conf
        $flags->{'superlibrarian'} = 1;
    }
    elsif ( $userid eq 'demo' && C4::Context->config('demo') ) {

        # Demo user that can do "anything" (demo=1 in /etc/koha.conf)
        $flags->{'superlibrarian'} = 1;
    }

    return $flags if $flags->{superlibrarian};

    foreach my $module ( keys %$flagsrequired ) {
        my $subperm = $flagsrequired->{$module};
        if ( $subperm eq '*' ) {
            return 0 unless ( $flags->{$module} == 1 or ref( $flags->{$module} ) );
        } else {
            return 0 unless (
                ( defined $flags->{$module} and
                    $flags->{$module} == 1 )
                or
                ( ref( $flags->{$module} ) and
                    exists $flags->{$module}->{$subperm} and
                    $flags->{$module}->{$subperm} == 1 )
            );
        }
    }
    return $flags;

    #FIXME - This fcn should return the failed permission so a suitable error msg can be delivered.
}

sub getborrowernumber {
    my ($userid) = @_;
    my $userenv = C4::Context->userenv;
    if ( defined($userenv) && ref($userenv) eq 'HASH' && $userenv->{number} ) {
        return $userenv->{number};
    }
    my $dbh = C4::Context->dbh;
    for my $field ( 'userid', 'cardnumber' ) {
        my $sth =
          $dbh->prepare("select borrowernumber from borrowers where $field=?");
        $sth->execute($userid);
        if ( $sth->rows ) {
            my ($bnumber) = $sth->fetchrow;
            return $bnumber;
        }
    }
    return 0;
}

=head2 _get_script_name

This returns the correct script name, for use in redirecting back to the correct page after showing
the login screen. It depends on details of the package Plack configuration, and should not be used
outside this context.

=cut

sub _get_script_name {
    # This is the method about.pl uses to detect Plack; now that two places use it, it MUST be
    # right.
    if ( ( any { /(^psgi\.|^plack\.)/i } keys %ENV ) && $ENV{SCRIPT_NAME} =~ m,^/(intranet|opac)(.*), ) {
        return '/cgi-bin/koha' . $2;
    } else {
        return $ENV{SCRIPT_NAME};
    }
}

END { }    # module clean-up code here (global destructor)
1;
__END__

=head1 SEE ALSO

CGI(3)

C4::Output(3)

Crypt::Eksblowfish::Bcrypt(3)

Digest::MD5(3)

=cut