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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 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 POSIX qw/strftime/;
use List::MoreUtils qw/ any /;
use Encode qw( encode is_utf8);
# 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 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 => {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( loggedinusernumber => $borrowernumber );
$template->param( sessionID => $sessionID );
if ( $in->{'type'} eq 'opac' ) {
require C4::VirtualShelves;
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 );
if ( $in->{'type'} eq 'opac' ){
require C4::VirtualShelves;
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"),
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
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'}" );
}
$template->param(
OpacAdditionalStylesheet => C4::Context->preference("OpacAdditionalStylesheet"),
AnonSuggestions => "" . C4::Context->preference("AnonSuggestions"),
AuthorisedValueImages => C4::Context->preference("AuthorisedValueImages"),
BranchesLoop => GetBranchesLoop($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"),
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"),
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 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 = 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=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') && !C4::Context->userenv->{'id'} ) || ( $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, $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 successfull, 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,
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"),
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' ) {
require C4::VirtualShelves;
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, $type ) . "?cas=$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),
);
}
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 = 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
$session = new CGI::Session( "driver:File;serializer:yaml;id:md5", $sessionID, { Directory => '/tmp' } );
}
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, 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 (
( 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;
}
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