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Koha/installer/InstallAuth.pm
Frédéric Demians 6b8be20497 Bug 6755 Problems with switching languages 
This patch solves the situation that news is in another language than
the Koha interface AND makes that themelanguage routine is always called
the same way in order to prevent mixed display.

It fixes also a bug related to language preselection based on web
browser prefered language.

September 9: Adjusted with input of Frederic Demians.

Septembre 10: Avoid circular dependency, as pointed by Chris Cormack.
Templates related functions are moved from C4::Output to C4::Templates

Signed-off-by: Alex Arnaud <alex.arnaud@biblibre.com>
Signed-off-by: Ian Walls <ian.walls@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
2011-09-23 09:47:09 +12:00

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# -*- tab-width: 8 -*-
# NOTE: This file uses 8-character tabs; do not change the tab size!
package InstallAuth;
# 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; FIXME - Bug 2505
use Digest::MD5 qw(md5_base64);
require Exporter;
use C4::Context;
use C4::Output;
use C4::Templates;
use C4::Koha;
use CGI::Session;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
# set the version for version checking
$VERSION = 3.00;
=head1 NAME
InstallAuth - Authenticates Koha users for Install process
=head1 SYNOPSIS
use CGI;
use InstallAuth;
use C4::Output;
my $query = new CGI;
my ($template, $borrowernumber, $cookie)
= get_template_and_user({template_name => "opac-main.tmpl",
query => $query,
type => "opac",
authnotrequired => 1,
flagsrequired => {borrow => 1},
});
output_html_with_http_headers $query, $cookie, $template->output;
=head1 DESCRIPTION
The main function of this module is to provide
authentification. However the get_template_and_user function has
been provided so that a users login information is passed along
automatically. This gets loaded into the template.
This package is different from C4::Auth in so far as
C4::Auth uses many preferences which are supposed NOT to be obtainable when installing the database.
As in C4::Auth, Authentication is based on cookies.
=head1 FUNCTIONS
=over 2
=cut
@ISA = qw(Exporter);
@EXPORT = qw(
&checkauth
&get_template_and_user
);
=item get_template_and_user
my ($template, $borrowernumber, $cookie)
= get_template_and_user({template_name => "opac-main.tmpl",
query => $query,
type => "opac",
authnotrequired => 1,
flagsrequired => {borrow => 1},
});
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
Templates.pm module.
=cut
sub get_template_and_user {
my $in = shift;
my $query = $in->{'query'};
my $language =_get_template_language($query->cookie('KohaOpacLanguage'));
my $path = C4::Context->config('intrahtdocs'). "/prog/". $language;
my $tmplbase = $in->{template_name};
$tmplbase=~ s/\.tmpl$/.tt/;
my $filename = "$path/modules/" . $tmplbase;
my $interface = 'intranet';
my $template = C4::Templates->new( $interface, $filename, $tmplbase);
my ( $user, $cookie, $sessionID, $flags ) = checkauth(
$in->{'query'},
$in->{'authnotrequired'},
$in->{'flagsrequired'},
$in->{'type'}
);
# use Data::Dumper;warn "utilisateur $user cookie : ".Dumper($cookie);
my $borrowernumber;
if ($user) {
$template->param( loggedinusername => $user );
$template->param( sessionID => $sessionID );
# 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_permission => 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 );
}
}
return ( $template, $borrowernumber, $cookie );
}
sub _get_template_language {
#verify if opac language exists in staff (bug 5660)
#conditions are 1) dir exists and 2) enabled in prefs
my ($opaclang)= @_;
return 'en' unless $opaclang;
my $path= C4::Context->config('intrahtdocs')."/prog/$opaclang";
my $pref= ','.C4::Context->preference('language').',';
if(-d $path) {
if($pref =~ /,$opaclang,/ ) {
return $opaclang;
}
}
return 'en';
}
=item checkauth
($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.
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 checkauth {
my $query = shift;
# $authnotrequired will be set for scripts which will run without authentication
my $authnotrequired = shift;
my $flagsrequired = shift;
my $type = shift;
$type = 'intranet' unless $type;
my $dbh = C4::Context->dbh();
my $template_name;
$template_name = "installer/auth.tmpl";
# state variables
my $loggedin = 0;
my %info;
my ( $userid, $cookie, $sessionID, $flags, $envcookie );
my $logout = $query->param('logout.x');
if ( $sessionID = $query->cookie("CGISESSID") ) {
C4::Context->_new_userenv($sessionID);
my $session =
new CGI::Session( "driver:File;serializer:yaml", $sessionID,
{ Directory => '/tmp' } );
if ( $session->param('cardnumber') ) {
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')
);
$cookie = $query->cookie( CGISESSID => $session->id );
$loggedin = 1;
$userid = $session->param('cardnumber');
}
my ( $ip, $lasttime );
if ($logout) {
# voluntary logout the user
C4::Context->_unset_userenv($sessionID);
$sessionID = undef;
$userid = undef;
open L, ">>/tmp/sessionlog";
my $time = localtime( time() );
printf L "%20s from %16s logged out at %30s (manually).\n", $userid,
$ip, $time;
close L;
}
}
unless ($userid) {
my $session =
new CGI::Session( "driver:File;serializer:yaml", undef, { Directory => '/tmp' } );
$sessionID = $session->id;
$userid = $query->param('userid');
C4::Context->_new_userenv($sessionID);
my $password = $query->param('password');
C4::Context->_new_userenv($sessionID);
my ( $return, $cardnumber ) = checkpw( $userid, $password );
if ($return) {
$loggedin = 1;
open L, ">>/tmp/sessionlog";
my $time = localtime( time() );
printf L "%20s from %16s logged in at %30s.\n", $userid,
$ENV{'REMOTE_ADDR'}, $time;
close L;
$cookie = $query->cookie( CGISESSID => $sessionID );
if ( $return == 2 ) {
#Only superlibrarian should have access to this page.
#Since if it is a user, it is supposed that there is a borrower table
#And thus that data structure is loaded.
my $hash = C4::Context::set_userenv(
0, 0,
C4::Context->config('user'), C4::Context->config('user'),
C4::Context->config('user'), "",
"NO_LIBRARY_SET", 1,
""
);
$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() );
$userid = C4::Context->config('user');
}
}
else {
if ($userid) {
$info{'invalid_username_or_password'} = 1;
C4::Context->_unset_userenv($sessionID);
}
}
}
# finished authentification, now respond
if ($loggedin) {
# successful login
unless ($cookie) {
$cookie = $query->cookie(
-name => 'CGISESSID',
-value => '',
-expires => ''
);
}
if ($envcookie) {
return ( $userid, [ $cookie, $envcookie ], $sessionID, $flags );
}
else {
return ( $userid, $cookie, $sessionID, $flags );
}
}
# else we have a problem...
# get the inputs from the incoming query
my @inputs = ();
foreach my $name ( param $query) {
(next) if ( $name eq 'userid' || $name eq 'password' );
my $value = $query->param($name);
push @inputs, { name => $name, value => $value };
}
my $path =
C4::Context->config('intrahtdocs') . "/prog/"
. ( $query->param('language') ? $query->param('language') : "en" );
my $filename = "$path/modules/$template_name";
$filename =~ s/\.tmpl$/.tt/;
my $interface = 'intranet';
my $template = C4::Templates->new( $interface, $filename);
$template->param(
INPUTS => \@inputs,
);
$template->param( login => 1 );
$template->param( loginprompt => 1 ) unless $info{'nopermission'};
my $self_url = $query->url( -absolute => 1 );
$template->param( url => $self_url, );
$template->param( \%info );
$cookie = $query->cookie(
-name => 'CGISESSID',
-value => $sessionID,
-expires => ''
);
print $query->header(
-type => 'text/html; charset=utf-8',
-cookie => $cookie
),
$template->output;
exit;
}
sub checkpw {
my ( $userid, $password ) = @_;
if ( $userid
&& $userid eq C4::Context->config('user')
&& "$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;
}
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;
}
END { } # module clean-up code here (global destructor)
1;
__END__
=back
=head1 SEE ALSO
CGI(3)
C4::Output(3)
Digest::MD5(3)
=cut
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