Bug 13200 - Followup of Bug 12246 - noisy C4/Auth.pm

[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 2 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

use strict;
use warnings;
use Digest::MD5 qw(md5_base64);
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 C4::VirtualShelves;
use Koha::AuthUtils qw(hash_password);
use POSIX qw/strftime/;
use List::MoreUtils qw/ any /;

# use utf8;
use vars qw($VERSION @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 }
    }
    $VERSION     = 3.07.00.049;   # set version for version checking

    $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;
  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   => {borrow => 1, 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   => {borrow => 1, 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});

    $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'}
        );
    }

    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)
        $borrowernumber = getborrowernumber($user) if defined($user);
        if (!defined($borrowernumber) && defined($user)) {
            my $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};
            }
        }

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

        my ($total, $pubshelves, $barshelves) = C4::VirtualShelves::GetSomeShelfNames($borrowernumber, 'MASTHEAD');
        $template->param(
            pubshelves     => $total->{pubtotal},
            pubshelvesloop => $pubshelves,
            barshelves      => $total->{bartotal},
            barshelvesloop  => $barshelves,
        );

        my ( $borr ) = C4::Members::GetMemberDetails( $borrowernumber );
        my @bordat;
        $bordat[0] = $borr;
        $template->param( "USER_INFO" => \@bordat );

        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_borrow           => 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 ( $flags->{$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 attemp 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 );
        
        my ($total, $pubshelves) = C4::VirtualShelves::GetSomeShelfNames(undef, 'MASTHEAD');
        $template->param(
            pubshelves     => $total->{pubtotal},
            pubshelvesloop => $pubshelves,
        );
    }
     # 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'))
    }

    # 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             => C4::Context->preference("singleBranchMode"),
            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"),
    );
    if ( $in->{'type'} eq "intranet" ) {
        $template->param(
            AmazonCoverImages           => C4::Context->preference("AmazonCoverImages"),
            AutoLocation                => C4::Context->preference("AutoLocation"),
            "BiblioDefaultView".C4::Context->preference("IntranetBiblioDefaultView") => 1,
            CalendarFirstDayOfWeek      => (C4::Context->preference("CalendarFirstDayOfWeek") eq "Sunday")?0:1,
            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"),
        );
    }
    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
        if (   C4::Context->preference("OpacBrowseResults")
            && $in->{'template_name'} =~ /opac-(.+)\.(?:tt|tmpl)$/ ) {
            my $pagename = $1;
            unless (   $pagename =~ /^(?:MARC|ISBD)?detail$/
                    or $pagename =~ /^addbybiblionumber$/ ) {
                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'}) {
            $opac_name = C4::Context->userenv->{'branch'};
        }
        # FIXME Under Plack the CGI->https method always returns 'OFF' ($using_https will be set to 0 in this case)
        my $opac_base_url = C4::Context->preference("OPACBaseURL"); #FIXME uses $using_https below as well
        if (!$opac_base_url){
            $opac_base_url = $ENV{'SERVER_NAME'} . ($ENV{'SERVER_PORT'} eq ($using_https ? "443" : "80") ? '' : ":$ENV{'SERVER_PORT'}");
        }
        $template->param(
            opaccolorstylesheet       => C4::Context->preference("opaccolorstylesheet"),
            AnonSuggestions           => "" . C4::Context->preference("AnonSuggestions"),
            AuthorisedValueImages     => C4::Context->preference("AuthorisedValueImages"),
            BranchesLoop              => GetBranchesLoop($opac_name),
            BranchCategoriesLoop      => GetBranchCategories( 'searchdomain', 1, $opac_name ),
            CalendarFirstDayOfWeek    => (C4::Context->preference("CalendarFirstDayOfWeek") eq "Sunday")?0:1,
            LibraryName               => "" . C4::Context->preference("LibraryName"),
            LibraryNameTitle          => "" . $LibraryNameTitle,
            LoginBranchname           => C4::Context->userenv?C4::Context->userenv->{"branchname"}:"",
            OPACAmazonCoverImages     => C4::Context->preference("OPACAmazonCoverImages"),
            OPACFRBRizeEditions       => C4::Context->preference("OPACFRBRizeEditions"),
            OpacHighlightedWords      => C4::Context->preference("OpacHighlightedWords"),
            OPACItemHolds             => C4::Context->preference("OPACItemHolds"),
            OPACShelfBrowser          => "". C4::Context->preference("OPACShelfBrowser"),
            OPACURLOpenInNewWindow    => "" . C4::Context->preference("OPACURLOpenInNewWindow"),
            OPACUserCSS               => "". C4::Context->preference("OPACUserCSS"),
            OPACViewOthersSuggestions => "" . C4::Context->preference("OPACViewOthersSuggestions"),
            OpacAuthorities           => C4::Context->preference("OpacAuthorities"),
            OPACBaseURL               => ($using_https ? "https://" : "http://") . $opac_base_url,
            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"),
            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"),
        );

        $template->param(OpacPublic => '1') if ($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 beeing 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=C4::Context::KOHAVERSION;
    # 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=3");
        } 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, $barshelves, $pubshelves );
    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 dont 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') ) || ( $shib && $shib_login && !$logout ) ) {
            #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);
            }

            # 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 ( $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 successfull, skip further login methods
        unless ( $shibSuccess ) {
        if ( $cas && $query->param('ticket') ) {
                my $retuserid;
                ( $return, $cardnumber, $retuserid ) =
                  checkpw( $dbh, $userid, $password, $query );
                $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 );
                $userid = $retuserid if ( $retuserid );
        $info{'invalid_username_or_password'} = 1 unless ($return);
        } }
        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')
                );

            }
            else {
                if ($userid) {
                    $info{'invalid_username_or_password'} = 1;
                    C4::Context->_unset_userenv($sessionID);
                }
                $session->param('lasttime',time());
                $session->param('ip',$session->remote_addr());
            }
        }    # 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(),
        opaccolorstylesheet  => C4::Context->preference("opaccolorstylesheet"),
        opaclayoutstylesheet => C4::Context->preference("opaclayoutstylesheet"),
        login                => 1,
        INPUTS               => \@inputs,
        casAuthentication    => C4::Context->preference("casAuthentication"),
        shibbolethAuthentication => $shib,
        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"),
        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( OpacPublic => C4::Context->preference("OpacPublic"));
    $template->param( loginprompt => 1 ) unless $info{'nopermission'};

    if($type eq 'opac'){
        my ($total, $pubshelves) = C4::VirtualShelves::GetSomeShelfNames(undef, 'MASTHEAD');
        $template->param(
            pubshelves     => $total->{pubtotal},
            pubshelvesloop => $pubshelves,
        );
    }

    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, $key) . "?cas=$key" };
        }
        $template->param(
        casServersLoop => \@tmplservers
        );
    } else {
        $template->param(
            casServerUrl    => login_cas_url($query),
        );
    }

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

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

    my $self_url = $query->url( -absolute => 1 );
    $template->param(
        url         => $self_url,
        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
      ),
      $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=C4::Context::KOHAVERSION;
    $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 ( $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=C4::Context::KOHAVERSION;
    $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 ( $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
        $session = new CGI::Session("driver:File;serializer:yaml;id:md5", $sessionID, {Directory=>'/tmp'});
    }
    return $session;
}

sub checkpw {
    my ( $dbh, $userid, $password, $query ) = @_;
    if ($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, $query);    # EXTERNAL AUTH
        ($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 ) = @_;

    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,branchcode,flags from borrowers where userid=?"
      );
    $sth->execute($userid);
    if ( $sth->rows ) {
        my ( $stored_hash, $cardnumber, $borrowernumber, $userid, $firstname,
            $surname, $branchcode, $flags )
          = $sth->fetchrow;

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

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

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

            C4::Context->set_userenv( $borrowernumber, $userid, $cardnumber,
                $firstname, $surname, $branchcode, $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, description
                             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'}} = $perm->{'description'};
    }
    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 ( $flags->{$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;
}

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