C4/Auth.pm

   1 package C4::Auth;
   2
   3 # Copyright 2000-2002 Katipo Communications
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20 use strict;
  21 use warnings;
  22 use Digest::MD5 qw(md5_base64);
  23 use File::Spec;
  24 use JSON qw/encode_json/;
  25 use URI::Escape;
  26 use CGI::Session;
  27
  28 require Exporter;
  29 use C4::Context;
  30 use C4::Templates;    # to get the template
  31 use C4::Languages;
  32 use C4::Branch;       # GetBranches
  33 use C4::Search::History;
  34 use Koha;
  35 use Koha::AuthUtils qw(get_script_name hash_password);
  36 use Koha::LibraryCategories;
  37 use Koha::Libraries;
  38 use POSIX qw/strftime/;
  39 use List::MoreUtils qw/ any /;
  40 use Encode qw( encode is_utf8);
  41
  42 # use utf8;
  43 use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $debug $ldap $cas $caslogout $shib $shib_login);
  44
  45 BEGIN {
  46     sub psgi_env { any { /^psgi\./ } keys %ENV }
  47
  48     sub safe_exit {
  49         if   (psgi_env) { die 'psgi:exit' }
  50         else            { exit }
  51     }
  52
  53     $debug     = $ENV{DEBUG};
  54     @ISA       = qw(Exporter);
  55     @EXPORT    = qw(&checkauth &get_template_and_user &haspermission &get_user_subpermissions);
  56     @EXPORT_OK = qw(&check_api_auth &get_session &check_cookie_auth &checkpw &checkpw_internal &checkpw_hash
  57       &get_all_subpermissions &get_user_subpermissions
  58     );
  59     %EXPORT_TAGS = ( EditPermissions => [qw(get_all_subpermissions get_user_subpermissions)] );
  60     $ldap      = C4::Context->config('useldapserver') || 0;
  61     $cas       = C4::Context->preference('casAuthentication');
  62     $shib      = C4::Context->config('useshibboleth') || 0;
  63     $caslogout = C4::Context->preference('casLogout');
  64     require C4::Auth_with_cas;    # no import
  65
  66     if ($ldap) {
  67         require C4::Auth_with_ldap;
  68         import C4::Auth_with_ldap qw(checkpw_ldap);
  69     }
  70     if ($shib) {
  71         require C4::Auth_with_shibboleth;
  72         import C4::Auth_with_shibboleth
  73           qw(shib_ok checkpw_shib logout_shib login_shib_url get_login_shib);
  74
  75         # Check for good config
  76         if ( shib_ok() ) {
  77
  78             # Get shibboleth login attribute
  79             $shib_login = get_login_shib();
  80         }
  81
  82         # Bad config, disable shibboleth
  83         else {
  84             $shib = 0;
  85         }
  86     }
  87     if ($cas) {
  88         import C4::Auth_with_cas qw(check_api_auth_cas checkpw_cas login_cas logout_cas login_cas_url);
  89     }
  90
  91 }
  92
  93 =head1 NAME
  94
  95 C4::Auth - Authenticates Koha users
  96
  97 =head1 SYNOPSIS
  98
  99   use CGI qw ( -utf8 );
 100   use C4::Auth;
 101   use C4::Output;
 102
 103   my $query = new CGI;
 104
 105   my ($template, $borrowernumber, $cookie)
 106     = get_template_and_user(
 107         {
 108             template_name   => "opac-main.tt",
 109             query           => $query,
 110       type            => "opac",
 111       authnotrequired => 0,
 112       flagsrequired   => { catalogue => '*', tools => 'import_patrons' },
 113   }
 114     );
 115
 116   output_html_with_http_headers $query, $cookie, $template->output;
 117
 118 =head1 DESCRIPTION
 119
 120 The main function of this module is to provide
 121 authentification. However the get_template_and_user function has
 122 been provided so that a users login information is passed along
 123 automatically. This gets loaded into the template.
 124
 125 =head1 FUNCTIONS
 126
 127 =head2 get_template_and_user
 128
 129  my ($template, $borrowernumber, $cookie)
 130      = get_template_and_user(
 131        {
 132          template_name   => "opac-main.tt",
 133          query           => $query,
 134          type            => "opac",
 135          authnotrequired => 0,
 136          flagsrequired   => { catalogue => '*', tools => 'import_patrons' },
 137        }
 138      );
 139
 140 This call passes the C<query>, C<flagsrequired> and C<authnotrequired>
 141 to C<&checkauth> (in this module) to perform authentification.
 142 See C<&checkauth> for an explanation of these parameters.
 143
 144 The C<template_name> is then used to find the correct template for
 145 the page. The authenticated users details are loaded onto the
 146 template in the HTML::Template LOOP variable C<USER_INFO>. Also the
 147 C<sessionID> is passed to the template. This can be used in templates
 148 if cookies are disabled. It needs to be put as and input to every
 149 authenticated page.
 150
 151 More information on the C<gettemplate> sub can be found in the
 152 Output.pm module.
 153
 154 =cut
 155
 156 sub get_template_and_user {
 157
 158     my $in = shift;
 159     my ( $user, $cookie, $sessionID, $flags );
 160
 161     C4::Context->interface( $in->{type} );
 162
 163     my $safe_chars = 'a-zA-Z0-9_\-\/';
 164     die "bad template path" unless $in->{'template_name'} =~ m/^[$safe_chars]+\.tt$/ig; #sanitize input
 165
 166     $in->{'authnotrequired'} ||= 0;
 167     my $template = C4::Templates::gettemplate(
 168         $in->{'template_name'},
 169         $in->{'type'},
 170         $in->{'query'},
 171         $in->{'is_plugin'}
 172     );
 173
 174     if ( $in->{'template_name'} !~ m/maintenance/ ) {
 175         ( $user, $cookie, $sessionID, $flags ) = checkauth(
 176             $in->{'query'},
 177             $in->{'authnotrequired'},
 178             $in->{'flagsrequired'},
 179             $in->{'type'}
 180         );
 181     }
 182
 183
 184     # If the user logged in is the SCO user and he tries to go out the SCO module, log the user out removing the CGISESSID cookie
 185     if ( $in->{type} eq 'opac' and $in->{template_name} !~ m|sco/| ) {
 186         if (  C4::Context->preference('AutoSelfCheckID') && $user eq C4::Context->preference('AutoSelfCheckID') ) {
 187             $template = C4::Templates::gettemplate( 'opac-auth.tt', 'opac', $in->{query} );
 188             my $cookie = $in->{query}->cookie(
 189                 -name     => 'CGISESSID',
 190                 -value    => '',
 191                 -expires  => '',
 192                 -HttpOnly => 1,
 193             );
 194
 195             $template->param(
 196                 loginprompt => 1,
 197                 script_name => get_script_name(),
 198             );
 199             print $in->{query}->header(
 200                 {   type              => 'text/html',
 201                     charset           => 'utf-8',
 202                     cookie            => $cookie,
 203                     'X-Frame-Options' => 'SAMEORIGIN'
 204                 }
 205               ),
 206             $template->output;
 207             safe_exit;
 208         }
 209     }
 210
 211     my $borrowernumber;
 212     if ($user) {
 213         require C4::Members;
 214
 215         # It's possible for $user to be the borrowernumber if they don't have a
 216         # userid defined (and are logging in through some other method, such
 217         # as SSL certs against an email address)
 218         my $borrower;
 219         $borrowernumber = getborrowernumber($user) if defined($user);
 220         if ( !defined($borrowernumber) && defined($user) ) {
 221             $borrower = C4::Members::GetMember( borrowernumber => $user );
 222             if ($borrower) {
 223                 $borrowernumber = $user;
 224
 225                 # A bit of a hack, but I don't know there's a nicer way
 226                 # to do it.
 227                 $user = $borrower->{firstname} . ' ' . $borrower->{surname};
 228             }
 229         } else {
 230             $borrower = C4::Members::GetMember( borrowernumber => $borrowernumber );
 231         }
 232
 233         # user info
 234         $template->param( loggedinusername   => $user );
 235         $template->param( loggedinusernumber => $borrowernumber );
 236         $template->param( sessionID          => $sessionID );
 237
 238         if ( $in->{'type'} eq 'opac' ) {
 239             require Koha::Virtualshelves;
 240             my $some_private_shelves = Koha::Virtualshelves->get_some_shelves(
 241                 {
 242                     borrowernumber => $borrowernumber,
 243                     category       => 1,
 244                 }
 245             );
 246             my $some_public_shelves = Koha::Virtualshelves->get_some_shelves(
 247                 {
 248                     category       => 2,
 249                 }
 250             );
 251             $template->param(
 252                 some_private_shelves => $some_private_shelves,
 253                 some_public_shelves  => $some_public_shelves,
 254             );
 255         }
 256
 257         $template->param( "USER_INFO" => $borrower );
 258
 259         my $all_perms = get_all_subpermissions();
 260
 261         my @flagroots = qw(circulate catalogue parameters borrowers permissions reserveforothers borrow
 262           editcatalogue updatecharges management tools editauthorities serials reports acquisition);
 263
 264         # We are going to use the $flags returned by checkauth
 265         # to create the template's parameters that will indicate
 266         # which menus the user can access.
 267         if ( $flags && $flags->{superlibrarian} == 1 ) {
 268             $template->param( CAN_user_circulate        => 1 );
 269             $template->param( CAN_user_catalogue        => 1 );
 270             $template->param( CAN_user_parameters       => 1 );
 271             $template->param( CAN_user_borrowers        => 1 );
 272             $template->param( CAN_user_permissions      => 1 );
 273             $template->param( CAN_user_reserveforothers => 1 );
 274             $template->param( CAN_user_editcatalogue    => 1 );
 275             $template->param( CAN_user_updatecharges    => 1 );
 276             $template->param( CAN_user_acquisition      => 1 );
 277             $template->param( CAN_user_management       => 1 );
 278             $template->param( CAN_user_tools            => 1 );
 279             $template->param( CAN_user_editauthorities  => 1 );
 280             $template->param( CAN_user_serials          => 1 );
 281             $template->param( CAN_user_reports          => 1 );
 282             $template->param( CAN_user_staffaccess      => 1 );
 283             $template->param( CAN_user_plugins          => 1 );
 284             $template->param( CAN_user_coursereserves   => 1 );
 285             foreach my $module ( keys %$all_perms ) {
 286
 287                 foreach my $subperm ( keys %{ $all_perms->{$module} } ) {
 288                     $template->param( "CAN_user_${module}_${subperm}" => 1 );
 289                 }
 290             }
 291         }
 292
 293         if ($flags) {
 294             foreach my $module ( keys %$all_perms ) {
 295                 if ( defined($flags->{$module}) && $flags->{$module} == 1 ) {
 296                     foreach my $subperm ( keys %{ $all_perms->{$module} } ) {
 297                         $template->param( "CAN_user_${module}_${subperm}" => 1 );
 298                     }
 299                 } elsif ( ref( $flags->{$module} ) ) {
 300                     foreach my $subperm ( keys %{ $flags->{$module} } ) {
 301                         $template->param( "CAN_user_${module}_${subperm}" => 1 );
 302                     }
 303                 }
 304             }
 305         }
 306
 307         if ($flags) {
 308             foreach my $module ( keys %$flags ) {
 309                 if ( $flags->{$module} == 1 or ref( $flags->{$module} ) ) {
 310                     $template->param( "CAN_user_$module" => 1 );
 311                     if ( $module eq "parameters" ) {
 312                         $template->param( CAN_user_management => 1 );
 313                     }
 314                 }
 315             }
 316         }
 317
 318         # Logged-in opac search history
 319         # If the requested template is an opac one and opac search history is enabled
 320         if ( $in->{type} eq 'opac' && C4::Context->preference('EnableOpacSearchHistory') ) {
 321             my $dbh   = C4::Context->dbh;
 322             my $query = "SELECT COUNT(*) FROM search_history WHERE userid=?";
 323             my $sth   = $dbh->prepare($query);
 324             $sth->execute($borrowernumber);
 325
 326             # If at least one search has already been performed
 327             if ( $sth->fetchrow_array > 0 ) {
 328
 329                 # We show the link in opac
 330                 $template->param( EnableOpacSearchHistory => 1 );
 331             }
 332
 333             # And if there are searches performed when the user was not logged in,
 334             # we add them to the logged-in search history
 335             my @recentSearches = C4::Search::History::get_from_session( { cgi => $in->{'query'} } );
 336             if (@recentSearches) {
 337                 my $dbh   = C4::Context->dbh;
 338                 my $query = q{
 339                     INSERT INTO search_history(userid, sessionid, query_desc, query_cgi, type,  total, time )
 340                     VALUES (?, ?, ?, ?, ?, ?, ?)
 341                 };
 342
 343                 my $sth = $dbh->prepare($query);
 344                 $sth->execute( $borrowernumber,
 345                     $in->{query}->cookie("CGISESSID"),
 346                     $_->{query_desc},
 347                     $_->{query_cgi},
 348                     $_->{type} || 'biblio',
 349                     $_->{total},
 350                     $_->{time},
 351                 ) foreach @recentSearches;
 352
 353                 # clear out the search history from the session now that
 354                 # we've saved it to the database
 355                 C4::Search::History::set_to_session( { cgi => $in->{'query'}, search_history => [] } );
 356             }
 357         } elsif ( $in->{type} eq 'intranet' and C4::Context->preference('EnableSearchHistory') ) {
 358             $template->param( EnableSearchHistory => 1 );
 359         }
 360     }
 361     else {    # if this is an anonymous session, setup to display public lists...
 362
 363         # If shibboleth is enabled, and we're in an anonymous session, we should allow
 364         # the user to attempt login via shibboleth.
 365         if ($shib) {
 366             $template->param( shibbolethAuthentication => $shib,
 367                 shibbolethLoginUrl => login_shib_url( $in->{'query'} ),
 368             );
 369
 370             # If shibboleth is enabled and we have a shibboleth login attribute,
 371             # but we are in an anonymous session, then we clearly have an invalid
 372             # shibboleth koha account.
 373             if ($shib_login) {
 374                 $template->param( invalidShibLogin => '1' );
 375             }
 376         }
 377
 378         $template->param( sessionID => $sessionID );
 379
 380         if ( $in->{'type'} eq 'opac' ){
 381             require Koha::Virtualshelves;
 382             my $some_public_shelves = Koha::Virtualshelves->get_some_shelves(
 383                 {
 384                     category       => 2,
 385                 }
 386             );
 387             $template->param(
 388                 some_public_shelves  => $some_public_shelves,
 389             );
 390         }
 391     }
 392
 393     # Anonymous opac search history
 394     # If opac search history is enabled and at least one search has already been performed
 395     if ( C4::Context->preference('EnableOpacSearchHistory') ) {
 396         my @recentSearches = C4::Search::History::get_from_session( { cgi => $in->{'query'} } );
 397         if (@recentSearches) {
 398             $template->param( EnableOpacSearchHistory => 1 );
 399         }
 400     }
 401
 402     if ( C4::Context->preference('dateformat') ) {
 403         $template->param( dateformat => C4::Context->preference('dateformat') );
 404     }
 405
 406     $template->param(auth_forwarded_hash => scalar $in->{'query'}->param('auth_forwarded_hash'));
 407
 408     # these template parameters are set the same regardless of $in->{'type'}
 409
 410     # Set the using_https variable for templates
 411     # FIXME Under Plack the CGI->https method always returns 'OFF'
 412     my $https = $in->{query}->https();
 413     my $using_https = ( defined $https and $https ne 'OFF' ) ? 1 : 0;
 414
 415     $template->param(
 416         "BiblioDefaultView" . C4::Context->preference("BiblioDefaultView") => 1,
 417         EnhancedMessagingPreferences                                       => C4::Context->preference('EnhancedMessagingPreferences'),
 418         GoogleJackets                                                      => C4::Context->preference("GoogleJackets"),
 419         OpenLibraryCovers                                                  => C4::Context->preference("OpenLibraryCovers"),
 420         KohaAdminEmailAddress                                              => "" . C4::Context->preference("KohaAdminEmailAddress"),
 421         LoginBranchcode => ( C4::Context->userenv ? C4::Context->userenv->{"branch"}    : undef ),
 422         LoginFirstname  => ( C4::Context->userenv ? C4::Context->userenv->{"firstname"} : "Bel" ),
 423         LoginSurname    => C4::Context->userenv ? C4::Context->userenv->{"surname"}      : "Inconnu",
 424         emailaddress    => C4::Context->userenv ? C4::Context->userenv->{"emailaddress"} : undef,
 425         loggedinpersona => C4::Context->userenv ? C4::Context->userenv->{"persona"}      : undef,
 426         TagsEnabled     => C4::Context->preference("TagsEnabled"),
 427         hide_marc       => C4::Context->preference("hide_marc"),
 428         item_level_itypes  => C4::Context->preference('item-level_itypes'),
 429         patronimages       => C4::Context->preference("patronimages"),
 430         singleBranchMode   => ( Koha::Libraries->search->count == 1 ),
 431         XSLTDetailsDisplay => C4::Context->preference("XSLTDetailsDisplay"),
 432         XSLTResultsDisplay => C4::Context->preference("XSLTResultsDisplay"),
 433         using_https        => $using_https,
 434         noItemTypeImages   => C4::Context->preference("noItemTypeImages"),
 435         marcflavour        => C4::Context->preference("marcflavour"),
 436         persona            => C4::Context->preference("persona"),
 437         OPACBaseURL        => C4::Context->preference('OPACBaseURL'),
 438     );
 439     if ( $in->{'type'} eq "intranet" ) {
 440         $template->param(
 441             AmazonCoverImages                                                          => C4::Context->preference("AmazonCoverImages"),
 442             AutoLocation                                                               => C4::Context->preference("AutoLocation"),
 443             "BiblioDefaultView" . C4::Context->preference("IntranetBiblioDefaultView") => 1,
 444             CircAutocompl                                                              => C4::Context->preference("CircAutocompl"),
 445             FRBRizeEditions                                                            => C4::Context->preference("FRBRizeEditions"),
 446             IndependentBranches                                                        => C4::Context->preference("IndependentBranches"),
 447             IntranetNav                                                                => C4::Context->preference("IntranetNav"),
 448             IntranetmainUserblock                                                      => C4::Context->preference("IntranetmainUserblock"),
 449             LibraryName                                                                => C4::Context->preference("LibraryName"),
 450             LoginBranchname                                                            => ( C4::Context->userenv ? C4::Context->userenv->{"branchname"} : undef ),
 451             advancedMARCEditor                                                         => C4::Context->preference("advancedMARCEditor"),
 452             canreservefromotherbranches                                                => C4::Context->preference('canreservefromotherbranches'),
 453             intranetcolorstylesheet                                                    => C4::Context->preference("intranetcolorstylesheet"),
 454             IntranetFavicon                                                            => C4::Context->preference("IntranetFavicon"),
 455             intranetreadinghistory                                                     => C4::Context->preference("intranetreadinghistory"),
 456             intranetstylesheet                                                         => C4::Context->preference("intranetstylesheet"),
 457             IntranetUserCSS                                                            => C4::Context->preference("IntranetUserCSS"),
 458             IntranetUserJS                                                             => C4::Context->preference("IntranetUserJS"),
 459             intranetbookbag                                                            => C4::Context->preference("intranetbookbag"),
 460             suggestion                                                                 => C4::Context->preference("suggestion"),
 461             virtualshelves                                                             => C4::Context->preference("virtualshelves"),
 462             StaffSerialIssueDisplayCount                                               => C4::Context->preference("StaffSerialIssueDisplayCount"),
 463             EasyAnalyticalRecords                                                      => C4::Context->preference('EasyAnalyticalRecords'),
 464             LocalCoverImages                                                           => C4::Context->preference('LocalCoverImages'),
 465             OPACLocalCoverImages                                                       => C4::Context->preference('OPACLocalCoverImages'),
 466             AllowMultipleCovers                                                        => C4::Context->preference('AllowMultipleCovers'),
 467             EnableBorrowerFiles                                                        => C4::Context->preference('EnableBorrowerFiles'),
 468             UseKohaPlugins                                                             => C4::Context->preference('UseKohaPlugins'),
 469             UseCourseReserves                                                          => C4::Context->preference("UseCourseReserves"),
 470             useDischarge                                                               => C4::Context->preference('useDischarge'),
 471         );
 472     }
 473     else {
 474         warn "template type should be OPAC, here it is=[" . $in->{'type'} . "]" unless ( $in->{'type'} eq 'opac' );
 475
 476         #TODO : replace LibraryName syspref with 'system name', and remove this html processing
 477         my $LibraryNameTitle = C4::Context->preference("LibraryName");
 478         $LibraryNameTitle =~ s/<(?:\/?)(?:br|p)\s*(?:\/?)>/ /sgi;
 479         $LibraryNameTitle =~ s/<(?:[^<>'"]|'(?:[^']*)'|"(?:[^"]*)")*>//sg;
 480
 481         # clean up the busc param in the session
 482         # if the page is not opac-detail and not the "add to list" page
 483         # and not the "edit comments" page
 484         if ( C4::Context->preference("OpacBrowseResults")
 485             && $in->{'template_name'} =~ /opac-(.+)\.(?:tt|tmpl)$/ ) {
 486             my $pagename = $1;
 487             unless ( $pagename =~ /^(?:MARC|ISBD)?detail$/
 488                 or $pagename =~ /^addbybiblionumber$/
 489                 or $pagename =~ /^review$/ ) {
 490                 my $sessionSearch = get_session( $sessionID || $in->{'query'}->cookie("CGISESSID") );
 491                 $sessionSearch->clear( ["busc"] ) if ( $sessionSearch->param("busc") );
 492             }
 493         }
 494
 495         # variables passed from CGI: opac_css_override and opac_search_limits.
 496         my $opac_search_limit   = $ENV{'OPAC_SEARCH_LIMIT'};
 497         my $opac_limit_override = $ENV{'OPAC_LIMIT_OVERRIDE'};
 498         my $opac_name           = '';
 499         if (
 500             ( $opac_limit_override && $opac_search_limit && $opac_search_limit =~ /branch:(\w+)/ ) ||
 501             ( $in->{'query'}->param('limit') && $in->{'query'}->param('limit') =~ /branch:(\w+)/ ) ||
 502             ( $in->{'query'}->param('multibranchlimit') && $in->{'query'}->param('multibranchlimit') =~ /multibranchlimit-(\w+)/ )
 503           ) {
 504             $opac_name = $1;    # opac_search_limit is a branch, so we use it.
 505         } elsif ( $in->{'query'}->param('multibranchlimit') ) {
 506             $opac_name = $in->{'query'}->param('multibranchlimit');
 507         } elsif ( C4::Context->preference("SearchMyLibraryFirst") && C4::Context->userenv && C4::Context->userenv->{'branch'} ) {
 508             $opac_name = C4::Context->userenv->{'branch'};
 509         }
 510
 511         my $library_categories = Koha::LibraryCategories->search({categorytype => 'searchdomain', show_in_pulldown => 1}, { order_by => ['categorytype', 'categorycode']});
 512         $template->param(
 513             OpacAdditionalStylesheet                   => C4::Context->preference("OpacAdditionalStylesheet"),
 514             AnonSuggestions                       => "" . C4::Context->preference("AnonSuggestions"),
 515             BranchesLoop                          => GetBranchesLoop($opac_name),
 516             BranchCategoriesLoop                  => $library_categories,
 517             opac_name                             => $opac_name,
 518             LibraryName                           => "" . C4::Context->preference("LibraryName"),
 519             LibraryNameTitle                      => "" . $LibraryNameTitle,
 520             LoginBranchname                       => C4::Context->userenv ? C4::Context->userenv->{"branchname"} : "",
 521             OPACAmazonCoverImages                 => C4::Context->preference("OPACAmazonCoverImages"),
 522             OPACFRBRizeEditions                   => C4::Context->preference("OPACFRBRizeEditions"),
 523             OpacHighlightedWords                  => C4::Context->preference("OpacHighlightedWords"),
 524             OPACShelfBrowser                      => "" . C4::Context->preference("OPACShelfBrowser"),
 525             OPACURLOpenInNewWindow                => "" . C4::Context->preference("OPACURLOpenInNewWindow"),
 526             OPACUserCSS                           => "" . C4::Context->preference("OPACUserCSS"),
 527             OpacAuthorities                       => C4::Context->preference("OpacAuthorities"),
 528             opac_css_override                     => $ENV{'OPAC_CSS_OVERRIDE'},
 529             opac_search_limit                     => $opac_search_limit,
 530             opac_limit_override                   => $opac_limit_override,
 531             OpacBrowser                           => C4::Context->preference("OpacBrowser"),
 532             OpacCloud                             => C4::Context->preference("OpacCloud"),
 533             OpacKohaUrl                           => C4::Context->preference("OpacKohaUrl"),
 534             OpacMainUserBlock                     => "" . C4::Context->preference("OpacMainUserBlock"),
 535             OpacNav                               => "" . C4::Context->preference("OpacNav"),
 536             OpacNavRight                          => "" . C4::Context->preference("OpacNavRight"),
 537             OpacNavBottom                         => "" . C4::Context->preference("OpacNavBottom"),
 538             OpacPasswordChange                    => C4::Context->preference("OpacPasswordChange"),
 539             OPACPatronDetails                     => C4::Context->preference("OPACPatronDetails"),
 540             OPACPrivacy                           => C4::Context->preference("OPACPrivacy"),
 541             OPACFinesTab                          => C4::Context->preference("OPACFinesTab"),
 542             OpacTopissue                          => C4::Context->preference("OpacTopissue"),
 543             RequestOnOpac                         => C4::Context->preference("RequestOnOpac"),
 544             'Version'                             => C4::Context->preference('Version'),
 545             hidelostitems                         => C4::Context->preference("hidelostitems"),
 546             mylibraryfirst                        => ( C4::Context->preference("SearchMyLibraryFirst") && C4::Context->userenv ) ? C4::Context->userenv->{'branch'} : '',
 547             opaclayoutstylesheet                  => "" . C4::Context->preference("opaclayoutstylesheet"),
 548             opacbookbag                           => "" . C4::Context->preference("opacbookbag"),
 549             opaccredits                           => "" . C4::Context->preference("opaccredits"),
 550             OpacFavicon                           => C4::Context->preference("OpacFavicon"),
 551             opacheader                            => "" . C4::Context->preference("opacheader"),
 552             opaclanguagesdisplay                  => "" . C4::Context->preference("opaclanguagesdisplay"),
 553             opacreadinghistory                    => C4::Context->preference("opacreadinghistory"),
 554             OPACUserJS                            => C4::Context->preference("OPACUserJS"),
 555             opacuserlogin                         => "" . C4::Context->preference("opacuserlogin"),
 556             OpenLibrarySearch                     => C4::Context->preference("OpenLibrarySearch"),
 557             ShowReviewer                          => C4::Context->preference("ShowReviewer"),
 558             ShowReviewerPhoto                     => C4::Context->preference("ShowReviewerPhoto"),
 559             suggestion                            => "" . C4::Context->preference("suggestion"),
 560             virtualshelves                        => "" . C4::Context->preference("virtualshelves"),
 561             OPACSerialIssueDisplayCount           => C4::Context->preference("OPACSerialIssueDisplayCount"),
 562             OPACXSLTDetailsDisplay                => C4::Context->preference("OPACXSLTDetailsDisplay"),
 563             OPACXSLTResultsDisplay                => C4::Context->preference("OPACXSLTResultsDisplay"),
 564             SyndeticsClientCode                   => C4::Context->preference("SyndeticsClientCode"),
 565             SyndeticsEnabled                      => C4::Context->preference("SyndeticsEnabled"),
 566             SyndeticsCoverImages                  => C4::Context->preference("SyndeticsCoverImages"),
 567             SyndeticsTOC                          => C4::Context->preference("SyndeticsTOC"),
 568             SyndeticsSummary                      => C4::Context->preference("SyndeticsSummary"),
 569             SyndeticsEditions                     => C4::Context->preference("SyndeticsEditions"),
 570             SyndeticsExcerpt                      => C4::Context->preference("SyndeticsExcerpt"),
 571             SyndeticsReviews                      => C4::Context->preference("SyndeticsReviews"),
 572             SyndeticsAuthorNotes                  => C4::Context->preference("SyndeticsAuthorNotes"),
 573             SyndeticsAwards                       => C4::Context->preference("SyndeticsAwards"),
 574             SyndeticsSeries                       => C4::Context->preference("SyndeticsSeries"),
 575             SyndeticsCoverImageSize               => C4::Context->preference("SyndeticsCoverImageSize"),
 576             OPACLocalCoverImages                  => C4::Context->preference("OPACLocalCoverImages"),
 577             PatronSelfRegistration                => C4::Context->preference("PatronSelfRegistration"),
 578             PatronSelfRegistrationDefaultCategory => C4::Context->preference("PatronSelfRegistrationDefaultCategory"),
 579             useDischarge                 => C4::Context->preference('useDischarge'),
 580         );
 581
 582         $template->param( OpacPublic => '1' ) if ( $user || C4::Context->preference("OpacPublic") );
 583     }
 584
 585     # Check if we were asked using parameters to force a specific language
 586     if ( defined $in->{'query'}->param('language') ) {
 587
 588         # Extract the language, let C4::Languages::getlanguage choose
 589         # what to do
 590         my $language = C4::Languages::getlanguage( $in->{'query'} );
 591         my $languagecookie = C4::Templates::getlanguagecookie( $in->{'query'}, $language );
 592         if ( ref $cookie eq 'ARRAY' ) {
 593             push @{$cookie}, $languagecookie;
 594         } else {
 595             $cookie = [ $cookie, $languagecookie ];
 596         }
 597     }
 598
 599     return ( $template, $borrowernumber, $cookie, $flags );
 600 }
 601
 602 =head2 checkauth
 603
 604   ($userid, $cookie, $sessionID) = &checkauth($query, $noauth, $flagsrequired, $type);
 605
 606 Verifies that the user is authorized to run this script.  If
 607 the user is authorized, a (userid, cookie, session-id, flags)
 608 quadruple is returned.  If the user is not authorized but does
 609 not have the required privilege (see $flagsrequired below), it
 610 displays an error page and exits.  Otherwise, it displays the
 611 login page and exits.
 612
 613 Note that C<&checkauth> will return if and only if the user
 614 is authorized, so it should be called early on, before any
 615 unfinished operations (e.g., if you've opened a file, then
 616 C<&checkauth> won't close it for you).
 617
 618 C<$query> is the CGI object for the script calling C<&checkauth>.
 619
 620 The C<$noauth> argument is optional. If it is set, then no
 621 authorization is required for the script.
 622
 623 C<&checkauth> fetches user and session information from C<$query> and
 624 ensures that the user is authorized to run scripts that require
 625 authorization.
 626
 627 The C<$flagsrequired> argument specifies the required privileges
 628 the user must have if the username and password are correct.
 629 It should be specified as a reference-to-hash; keys in the hash
 630 should be the "flags" for the user, as specified in the Members
 631 intranet module. Any key specified must correspond to a "flag"
 632 in the userflags table. E.g., { circulate => 1 } would specify
 633 that the user must have the "circulate" privilege in order to
 634 proceed. To make sure that access control is correct, the
 635 C<$flagsrequired> parameter must be specified correctly.
 636
 637 Koha also has a concept of sub-permissions, also known as
 638 granular permissions.  This makes the value of each key
 639 in the C<flagsrequired> hash take on an additional
 640 meaning, i.e.,
 641
 642  1
 643
 644 The user must have access to all subfunctions of the module
 645 specified by the hash key.
 646
 647  *
 648
 649 The user must have access to at least one subfunction of the module
 650 specified by the hash key.
 651
 652  specific permission, e.g., 'export_catalog'
 653
 654 The user must have access to the specific subfunction list, which
 655 must correspond to a row in the permissions table.
 656
 657 The C<$type> argument specifies whether the template should be
 658 retrieved from the opac or intranet directory tree.  "opac" is
 659 assumed if it is not specified; however, if C<$type> is specified,
 660 "intranet" is assumed if it is not "opac".
 661
 662 If C<$query> does not have a valid session ID associated with it
 663 (i.e., the user has not logged in) or if the session has expired,
 664 C<&checkauth> presents the user with a login page (from the point of
 665 view of the original script, C<&checkauth> does not return). Once the
 666 user has authenticated, C<&checkauth> restarts the original script
 667 (this time, C<&checkauth> returns).
 668
 669 The login page is provided using a HTML::Template, which is set in the
 670 systempreferences table or at the top of this file. The variable C<$type>
 671 selects which template to use, either the opac or the intranet
 672 authentification template.
 673
 674 C<&checkauth> returns a user ID, a cookie, and a session ID. The
 675 cookie should be sent back to the browser; it verifies that the user
 676 has authenticated.
 677
 678 =cut
 679
 680 sub _version_check {
 681     my $type  = shift;
 682     my $query = shift;
 683     my $version;
 684
 685     # If version syspref is unavailable, it means Koha is being installed,
 686     # and so we must redirect to OPAC maintenance page or to the WebInstaller
 687     # also, if OpacMaintenance is ON, OPAC should redirect to maintenance
 688     if ( C4::Context->preference('OpacMaintenance') && $type eq 'opac' ) {
 689         warn "OPAC Install required, redirecting to maintenance";
 690         print $query->redirect("/cgi-bin/koha/maintenance.pl");
 691         safe_exit;
 692     }
 693     unless ( $version = C4::Context->preference('Version') ) {    # assignment, not comparison
 694         if ( $type ne 'opac' ) {
 695             warn "Install required, redirecting to Installer";
 696             print $query->redirect("/cgi-bin/koha/installer/install.pl");
 697         } else {
 698             warn "OPAC Install required, redirecting to maintenance";
 699             print $query->redirect("/cgi-bin/koha/maintenance.pl");
 700         }
 701         safe_exit;
 702     }
 703
 704     # check that database and koha version are the same
 705     # there is no DB version, it's a fresh install,
 706     # go to web installer
 707     # there is a DB version, compare it to the code version
 708     my $kohaversion = Koha::version();
 709
 710     # remove the 3 last . to have a Perl number
 711     $kohaversion =~ s/(.*\..*)\.(.*)\.(.*)/$1$2$3/;
 712     $debug and print STDERR "kohaversion : $kohaversion\n";
 713     if ( $version < $kohaversion ) {
 714         my $warning = "Database update needed, redirecting to %s. Database is $version and Koha is $kohaversion";
 715         if ( $type ne 'opac' ) {
 716             warn sprintf( $warning, 'Installer' );
 717             print $query->redirect("/cgi-bin/koha/installer/install.pl?step=1&op=updatestructure");
 718         } else {
 719             warn sprintf( "OPAC: " . $warning, 'maintenance' );
 720             print $query->redirect("/cgi-bin/koha/maintenance.pl");
 721         }
 722         safe_exit;
 723     }
 724 }
 725
 726 sub _session_log {
 727     (@_) or return 0;
 728     open my $fh, '>>', "/tmp/sessionlog" or warn "ERROR: Cannot append to /tmp/sessionlog";
 729     printf $fh join( "\n", @_ );
 730     close $fh;
 731 }
 732
 733 sub _timeout_syspref {
 734     my $timeout = C4::Context->preference('timeout') || 600;
 735
 736     # value in days, convert in seconds
 737     if ( $timeout =~ /(\d+)[dD]/ ) {
 738         $timeout = $1 * 86400;
 739     }
 740     return $timeout;
 741 }
 742
 743 sub checkauth {
 744     my $query = shift;
 745     $debug and warn "Checking Auth";
 746
 747     # $authnotrequired will be set for scripts which will run without authentication
 748     my $authnotrequired = shift;
 749     my $flagsrequired   = shift;
 750     my $type            = shift;
 751     my $persona         = shift;
 752     $type = 'opac' unless $type;
 753
 754     my $dbh     = C4::Context->dbh;
 755     my $timeout = _timeout_syspref();
 756
 757     _version_check( $type, $query );
 758
 759     # state variables
 760     my $loggedin = 0;
 761     my %info;
 762     my ( $userid, $cookie, $sessionID, $flags );
 763     my $logout = $query->param('logout.x');
 764
 765     my $anon_search_history;
 766
 767     # This parameter is the name of the CAS server we want to authenticate against,
 768     # when using authentication against multiple CAS servers, as configured in Auth_cas_servers.yaml
 769     my $casparam = $query->param('cas');
 770     my $q_userid = $query->param('userid') // '';
 771
 772     # Basic authentication is incompatible with the use of Shibboleth,
 773     # as Shibboleth may return REMOTE_USER as a Shibboleth attribute,
 774     # and it may not be the attribute we want to use to match the koha login.
 775     #
 776     # Also, do not consider an empty REMOTE_USER.
 777     #
 778     # Finally, after those tests, we can assume (although if it would be better with
 779     # a syspref) that if we get a REMOTE_USER, that's from basic authentication,
 780     # and we can affect it to $userid.
 781     if ( !$shib and defined( $ENV{'REMOTE_USER'} ) and $ENV{'REMOTE_USER'} ne '' and $userid = $ENV{'REMOTE_USER'} ) {
 782
 783         # Using Basic Authentication, no cookies required
 784         $cookie = $query->cookie(
 785             -name     => 'CGISESSID',
 786             -value    => '',
 787             -expires  => '',
 788             -HttpOnly => 1,
 789         );
 790         $loggedin = 1;
 791     }
 792     elsif ($persona) {
 793
 794         # we don't want to set a session because we are being called by a persona callback
 795     }
 796     elsif ( $sessionID = $query->cookie("CGISESSID") )
 797     {    # assignment, not comparison
 798         my $session = get_session($sessionID);
 799         C4::Context->_new_userenv($sessionID);
 800         my ( $ip, $lasttime, $sessiontype );
 801         my $s_userid = '';
 802         if ($session) {
 803             $s_userid = $session->param('id') // '';
 804             C4::Context->set_userenv(
 805                 $session->param('number'),       $s_userid,
 806                 $session->param('cardnumber'),   $session->param('firstname'),
 807                 $session->param('surname'),      $session->param('branch'),
 808                 $session->param('branchname'),   $session->param('flags'),
 809                 $session->param('emailaddress'), $session->param('branchprinter'),
 810                 $session->param('persona'),      $session->param('shibboleth')
 811             );
 812             C4::Context::set_shelves_userenv( 'bar', $session->param('barshelves') );
 813             C4::Context::set_shelves_userenv( 'pub', $session->param('pubshelves') );
 814             C4::Context::set_shelves_userenv( 'tot', $session->param('totshelves') );
 815             $debug and printf STDERR "AUTH_SESSION: (%s)\t%s %s - %s\n", map { $session->param($_) } qw(cardnumber firstname surname branch);
 816             $ip          = $session->param('ip');
 817             $lasttime    = $session->param('lasttime');
 818             $userid      = $s_userid;
 819             $sessiontype = $session->param('sessiontype') || '';
 820         }
 821         if ( ( $query->param('koha_login_context') && ( $q_userid ne $s_userid ) )
 822             || ( $cas && $query->param('ticket') && !C4::Context->userenv->{'id'} )
 823             || ( $shib && $shib_login && !$logout && !C4::Context->userenv->{'id'} )
 824         ) {
 825
 826             #if a user enters an id ne to the id in the current session, we need to log them in...
 827             #first we need to clear the anonymous session...
 828             $debug and warn "query id = $q_userid but session id = $s_userid";
 829             $anon_search_history = $session->param('search_history');
 830             $session->delete();
 831             $session->flush;
 832             C4::Context->_unset_userenv($sessionID);
 833             $sessionID = undef;
 834             $userid    = undef;
 835         }
 836         elsif ($logout) {
 837
 838             # voluntary logout the user
 839             # check wether the user was using their shibboleth session or a local one
 840             my $shibSuccess = C4::Context->userenv->{'shibboleth'};
 841             $session->delete();
 842             $session->flush;
 843             C4::Context->_unset_userenv($sessionID);
 844
 845             #_session_log(sprintf "%20s from %16s logged out at %30s (manually).\n", $userid,$ip,(strftime "%c",localtime));
 846             $sessionID = undef;
 847             $userid    = undef;
 848
 849             if ($cas and $caslogout) {
 850                 logout_cas($query, $type);
 851             }
 852
 853             # If we are in a shibboleth session (shibboleth is enabled, a shibboleth match attribute is set and matches koha matchpoint)
 854             if ( $shib and $shib_login and $shibSuccess and $type eq 'opac' ) {
 855
 856                 # (Note: $type eq 'opac' condition should be removed when shibboleth authentication for intranet will be implemented)
 857                 logout_shib($query);
 858             }
 859         }
 860         elsif ( !$lasttime || ( $lasttime < time() - $timeout ) ) {
 861
 862             # timed logout
 863             $info{'timed_out'} = 1;
 864             if ($session) {
 865                 $session->delete();
 866                 $session->flush;
 867             }
 868             C4::Context->_unset_userenv($sessionID);
 869
 870             #_session_log(sprintf "%20s from %16s logged out at %30s (inactivity).\n", $userid,$ip,(strftime "%c",localtime));
 871             $userid    = undef;
 872             $sessionID = undef;
 873         }
 874         elsif ( C4::Context->preference('SessionRestrictionByIP') && $ip ne $ENV{'REMOTE_ADDR'} ) {
 875
 876             # Different ip than originally logged in from
 877             $info{'oldip'}        = $ip;
 878             $info{'newip'}        = $ENV{'REMOTE_ADDR'};
 879             $info{'different_ip'} = 1;
 880             $session->delete();
 881             $session->flush;
 882             C4::Context->_unset_userenv($sessionID);
 883
 884             #_session_log(sprintf "%20s from %16s logged out at %30s (ip changed to %16s).\n", $userid,$ip,(strftime "%c",localtime), $info{'newip'});
 885             $sessionID = undef;
 886             $userid    = undef;
 887         }
 888         else {
 889             $cookie = $query->cookie(
 890                 -name     => 'CGISESSID',
 891                 -value    => $session->id,
 892                 -HttpOnly => 1
 893             );
 894             $session->param( 'lasttime', time() );
 895             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...
 896                 $flags = haspermission( $userid, $flagsrequired );
 897                 if ($flags) {
 898                     $loggedin = 1;
 899                 } else {
 900                     $info{'nopermission'} = 1;
 901                 }
 902             }
 903         }
 904     }
 905     unless ( $userid || $sessionID ) {
 906
 907         #we initiate a session prior to checking for a username to allow for anonymous sessions...
 908         my $session = get_session("") or die "Auth ERROR: Cannot get_session()";
 909
 910         # Save anonymous search history in new session so it can be retrieved
 911         # by get_template_and_user to store it in user's search history after
 912         # a successful login.
 913         if ($anon_search_history) {
 914             $session->param( 'search_history', $anon_search_history );
 915         }
 916
 917         my $sessionID = $session->id;
 918         C4::Context->_new_userenv($sessionID);
 919         $cookie = $query->cookie(
 920             -name     => 'CGISESSID',
 921             -value    => $session->id,
 922             -HttpOnly => 1
 923         );
 924         $userid = $q_userid;
 925         my $pki_field = C4::Context->preference('AllowPKIAuth');
 926         if ( !defined($pki_field) ) {
 927             print STDERR "ERROR: Missing system preference AllowPKIAuth.\n";
 928             $pki_field = 'None';
 929         }
 930         if ( ( $cas && $query->param('ticket') )
 931             || $userid
 932             || ( $shib && $shib_login )
 933             || $pki_field ne 'None'
 934             || $persona )
 935         {
 936             my $password    = $query->param('password');
 937             my $shibSuccess = 0;
 938
 939             my ( $return, $cardnumber );
 940
 941             # If shib is enabled and we have a shib login, does the login match a valid koha user
 942             if ( $shib && $shib_login && $type eq 'opac' ) {
 943                 my $retuserid;
 944
 945                 # Do not pass password here, else shib will not be checked in checkpw.
 946                 ( $return, $cardnumber, $retuserid ) = checkpw( $dbh, $userid, undef, $query );
 947                 $userid      = $retuserid;
 948                 $shibSuccess = $return;
 949                 $info{'invalidShibLogin'} = 1 unless ($return);
 950             }
 951
 952             # If shib login and match were successful, skip further login methods
 953             unless ($shibSuccess) {
 954                 if ( $cas && $query->param('ticket') ) {
 955                     my $retuserid;
 956                     ( $return, $cardnumber, $retuserid ) =
 957                       checkpw( $dbh, $userid, $password, $query, $type );
 958                     $userid = $retuserid;
 959                     $info{'invalidCasLogin'} = 1 unless ($return);
 960                 }
 961
 962                 elsif ($persona) {
 963                     my $value = $persona;
 964
 965                     # If we're looking up the email, there's a chance that the person
 966                     # doesn't have a userid. So if there is none, we pass along the
 967                     # borrower number, and the bits of code that need to know the user
 968                     # ID will have to be smart enough to handle that.
 969                     require C4::Members;
 970                     my @users_info = C4::Members::GetBorrowersWithEmail($value);
 971                     if (@users_info) {
 972
 973                         # First the userid, then the borrowernum
 974                         $value = $users_info[0][1] || $users_info[0][0];
 975                     }
 976                     else {
 977                         undef $value;
 978                     }
 979                     $return = $value ? 1 : 0;
 980                     $userid = $value;
 981                 }
 982
 983                 elsif (
 984                     ( $pki_field eq 'Common Name' && $ENV{'SSL_CLIENT_S_DN_CN'} )
 985                     || ( $pki_field eq 'emailAddress'
 986                         && $ENV{'SSL_CLIENT_S_DN_Email'} )
 987                   )
 988                 {
 989                     my $value;
 990                     if ( $pki_field eq 'Common Name' ) {
 991                         $value = $ENV{'SSL_CLIENT_S_DN_CN'};
 992                     }
 993                     elsif ( $pki_field eq 'emailAddress' ) {
 994                         $value = $ENV{'SSL_CLIENT_S_DN_Email'};
 995
 996                         # If we're looking up the email, there's a chance that the person
 997                         # doesn't have a userid. So if there is none, we pass along the
 998                         # borrower number, and the bits of code that need to know the user
 999                         # ID will have to be smart enough to handle that.
1000                         require C4::Members;
1001                         my @users_info = C4::Members::GetBorrowersWithEmail($value);
1002                         if (@users_info) {
1003
1004                             # First the userid, then the borrowernum
1005                             $value = $users_info[0][1] || $users_info[0][0];
1006                         } else {
1007                             undef $value;
1008                         }
1009                     }
1010
1011                     $return = $value ? 1 : 0;
1012                     $userid = $value;
1013
1014                 }
1015                 else {
1016                     my $retuserid;
1017                     ( $return, $cardnumber, $retuserid ) =
1018                       checkpw( $dbh, $userid, $password, $query, $type );
1019                     $userid = $retuserid if ($retuserid);
1020                     $info{'invalid_username_or_password'} = 1 unless ($return);
1021                 }
1022             }
1023
1024             # $return: 1 = valid user, 2 = superlibrarian
1025             if ($return) {
1026
1027                 #_session_log(sprintf "%20s from %16s logged in  at %30s.\n", $userid,$ENV{'REMOTE_ADDR'},(strftime '%c', localtime));
1028                 if ( $flags = haspermission( $userid, $flagsrequired ) ) {
1029                     $loggedin = 1;
1030                 }
1031                 else {
1032                     $info{'nopermission'} = 1;
1033                     C4::Context->_unset_userenv($sessionID);
1034                 }
1035                 my ( $borrowernumber, $firstname, $surname, $userflags,
1036                     $branchcode, $branchname, $branchprinter, $emailaddress );
1037
1038                 if ( $return == 1 ) {
1039                     my $select = "
1040                     SELECT borrowernumber, firstname, surname, flags, borrowers.branchcode,
1041                     branches.branchname    as branchname,
1042                     branches.branchprinter as branchprinter,
1043                     email
1044                     FROM borrowers
1045                     LEFT JOIN branches on borrowers.branchcode=branches.branchcode
1046                     ";
1047                     my $sth = $dbh->prepare("$select where userid=?");
1048                     $sth->execute($userid);
1049                     unless ( $sth->rows ) {
1050                         $debug and print STDERR "AUTH_1: no rows for userid='$userid'\n";
1051                         $sth = $dbh->prepare("$select where cardnumber=?");
1052                         $sth->execute($cardnumber);
1053
1054                         unless ( $sth->rows ) {
1055                             $debug and print STDERR "AUTH_2a: no rows for cardnumber='$cardnumber'\n";
1056                             $sth->execute($userid);
1057                             unless ( $sth->rows ) {
1058                                 $debug and print STDERR "AUTH_2b: no rows for userid='$userid' AS cardnumber\n";
1059                             }
1060                         }
1061                     }
1062                     if ( $sth->rows ) {
1063                         ( $borrowernumber, $firstname, $surname, $userflags,
1064                             $branchcode, $branchname, $branchprinter, $emailaddress ) = $sth->fetchrow;
1065                         $debug and print STDERR "AUTH_3 results: " .
1066                           "$cardnumber,$borrowernumber,$userid,$firstname,$surname,$userflags,$branchcode,$emailaddress\n";
1067                     } else {
1068                         print STDERR "AUTH_3: no results for userid='$userid', cardnumber='$cardnumber'.\n";
1069                     }
1070
1071                     # launch a sequence to check if we have a ip for the branch, i
1072                     # if we have one we replace the branchcode of the userenv by the branch bound in the ip.
1073
1074                     my $ip = $ENV{'REMOTE_ADDR'};
1075
1076                     # if they specify at login, use that
1077                     if ( $query->param('branch') ) {
1078                         $branchcode = $query->param('branch');
1079                         $branchname = GetBranchName($branchcode);
1080                     }
1081
1082                     my $branches = { map { $_->branchcode => $_->unblessed } Koha::Libraries->search };
1083                     if ( $type ne 'opac' and C4::Context->boolean_preference('AutoLocation') ) {
1084
1085                         # we have to check they are coming from the right ip range
1086                         my $domain = $branches->{$branchcode}->{'branchip'};
1087                         $domain =~ s|\.\*||g;
1088                         if ( $ip !~ /^$domain/ ) {
1089                             $loggedin = 0;
1090                             $info{'wrongip'} = 1;
1091                         }
1092                     }
1093
1094                     my @branchesloop;
1095                     foreach my $br ( keys %$branches ) {
1096
1097                         #     now we work with the treatment of ip
1098                         my $domain = $branches->{$br}->{'branchip'};
1099                         if ( $domain && $ip =~ /^$domain/ ) {
1100                             $branchcode = $branches->{$br}->{'branchcode'};
1101
1102                             # new op dev : add the branchprinter and branchname in the cookie
1103                             $branchprinter = $branches->{$br}->{'branchprinter'};
1104                             $branchname    = $branches->{$br}->{'branchname'};
1105                         }
1106                     }
1107                     $session->param( 'number',       $borrowernumber );
1108                     $session->param( 'id',           $userid );
1109                     $session->param( 'cardnumber',   $cardnumber );
1110                     $session->param( 'firstname',    $firstname );
1111                     $session->param( 'surname',      $surname );
1112                     $session->param( 'branch',       $branchcode );
1113                     $session->param( 'branchname',   $branchname );
1114                     $session->param( 'flags',        $userflags );
1115                     $session->param( 'emailaddress', $emailaddress );
1116                     $session->param( 'ip',           $session->remote_addr() );
1117                     $session->param( 'lasttime',     time() );
1118                     $session->param( 'shibboleth',   $shibSuccess );
1119                     $debug and printf STDERR "AUTH_4: (%s)\t%s %s - %s\n", map { $session->param($_) } qw(cardnumber firstname surname branch);
1120                 }
1121                 elsif ( $return == 2 ) {
1122
1123                     #We suppose the user is the superlibrarian
1124                     $borrowernumber = 0;
1125                     $session->param( 'number',       0 );
1126                     $session->param( 'id',           C4::Context->config('user') );
1127                     $session->param( 'cardnumber',   C4::Context->config('user') );
1128                     $session->param( 'firstname',    C4::Context->config('user') );
1129                     $session->param( 'surname',      C4::Context->config('user') );
1130                     $session->param( 'branch',       'NO_LIBRARY_SET' );
1131                     $session->param( 'branchname',   'NO_LIBRARY_SET' );
1132                     $session->param( 'flags',        1 );
1133                     $session->param( 'emailaddress', C4::Context->preference('KohaAdminEmailAddress') );
1134                     $session->param( 'ip',           $session->remote_addr() );
1135                     $session->param( 'lasttime',     time() );
1136                 }
1137                 if ($persona) {
1138                     $session->param( 'persona', 1 );
1139                 }
1140                 C4::Context->set_userenv(
1141                     $session->param('number'),       $session->param('id'),
1142                     $session->param('cardnumber'),   $session->param('firstname'),
1143                     $session->param('surname'),      $session->param('branch'),
1144                     $session->param('branchname'),   $session->param('flags'),
1145                     $session->param('emailaddress'), $session->param('branchprinter'),
1146                     $session->param('persona'),      $session->param('shibboleth')
1147                 );
1148
1149             }
1150             # $return: 0 = invalid user
1151             # reset to anonymous session
1152             else {
1153                 $debug and warn "Login failed, resetting anonymous session...";
1154                 if ($userid) {
1155                     $info{'invalid_username_or_password'} = 1;
1156                     C4::Context->_unset_userenv($sessionID);
1157                 }
1158                 $session->param( 'lasttime', time() );
1159                 $session->param( 'ip',       $session->remote_addr() );
1160                 $session->param( 'sessiontype', 'anon' );
1161             }
1162         }    # END if ( $userid    = $query->param('userid') )
1163         elsif ( $type eq "opac" ) {
1164
1165             # if we are here this is an anonymous session; add public lists to it and a few other items...
1166             # anonymous sessions are created only for the OPAC
1167             $debug and warn "Initiating an anonymous session...";
1168
1169             # setting a couple of other session vars...
1170             $session->param( 'ip',          $session->remote_addr() );
1171             $session->param( 'lasttime',    time() );
1172             $session->param( 'sessiontype', 'anon' );
1173         }
1174     }    # END unless ($userid)
1175
1176     # finished authentification, now respond
1177     if ( $loggedin || $authnotrequired )
1178     {
1179         # successful login
1180         unless ($cookie) {
1181             $cookie = $query->cookie(
1182                 -name     => 'CGISESSID',
1183                 -value    => '',
1184                 -HttpOnly => 1
1185             );
1186         }
1187         return ( $userid, $cookie, $sessionID, $flags );
1188     }
1189
1190     #
1191     #
1192     # AUTH rejected, show the login/password template, after checking the DB.
1193     #
1194     #
1195
1196     # get the inputs from the incoming query
1197     my @inputs = ();
1198     foreach my $name ( param $query) {
1199         (next) if ( $name eq 'userid' || $name eq 'password' || $name eq 'ticket' );
1200         my $value = $query->param($name);
1201         push @inputs, { name => $name, value => $value };
1202     }
1203
1204     my $LibraryNameTitle = C4::Context->preference("LibraryName");
1205     $LibraryNameTitle =~ s/<(?:\/?)(?:br|p)\s*(?:\/?)>/ /sgi;
1206     $LibraryNameTitle =~ s/<(?:[^<>'"]|'(?:[^']*)'|"(?:[^"]*)")*>//sg;
1207
1208     my $template_name = ( $type eq 'opac' ) ? 'opac-auth.tt' : 'auth.tt';
1209     my $template = C4::Templates::gettemplate( $template_name, $type, $query );
1210     $template->param(
1211         branchloop                            => GetBranchesLoop(),
1212         OpacAdditionalStylesheet                   => C4::Context->preference("OpacAdditionalStylesheet"),
1213         opaclayoutstylesheet                  => C4::Context->preference("opaclayoutstylesheet"),
1214         login                                 => 1,
1215         INPUTS                                => \@inputs,
1216         script_name                           => get_script_name(),
1217         casAuthentication                     => C4::Context->preference("casAuthentication"),
1218         shibbolethAuthentication              => $shib,
1219         SessionRestrictionByIP                => C4::Context->preference("SessionRestrictionByIP"),
1220         suggestion                            => C4::Context->preference("suggestion"),
1221         virtualshelves                        => C4::Context->preference("virtualshelves"),
1222         LibraryName                           => "" . C4::Context->preference("LibraryName"),
1223         LibraryNameTitle                      => "" . $LibraryNameTitle,
1224         opacuserlogin                         => C4::Context->preference("opacuserlogin"),
1225         OpacNav                               => C4::Context->preference("OpacNav"),
1226         OpacNavRight                          => C4::Context->preference("OpacNavRight"),
1227         OpacNavBottom                         => C4::Context->preference("OpacNavBottom"),
1228         opaccredits                           => C4::Context->preference("opaccredits"),
1229         OpacFavicon                           => C4::Context->preference("OpacFavicon"),
1230         opacreadinghistory                    => C4::Context->preference("opacreadinghistory"),
1231         opaclanguagesdisplay                  => C4::Context->preference("opaclanguagesdisplay"),
1232         OPACUserJS                            => C4::Context->preference("OPACUserJS"),
1233         opacbookbag                           => "" . C4::Context->preference("opacbookbag"),
1234         OpacCloud                             => C4::Context->preference("OpacCloud"),
1235         OpacTopissue                          => C4::Context->preference("OpacTopissue"),
1236         OpacAuthorities                       => C4::Context->preference("OpacAuthorities"),
1237         OpacBrowser                           => C4::Context->preference("OpacBrowser"),
1238         opacheader                            => C4::Context->preference("opacheader"),
1239         TagsEnabled                           => C4::Context->preference("TagsEnabled"),
1240         OPACUserCSS                           => C4::Context->preference("OPACUserCSS"),
1241         intranetcolorstylesheet               => C4::Context->preference("intranetcolorstylesheet"),
1242         intranetstylesheet                    => C4::Context->preference("intranetstylesheet"),
1243         intranetbookbag                       => C4::Context->preference("intranetbookbag"),
1244         IntranetNav                           => C4::Context->preference("IntranetNav"),
1245         IntranetFavicon                       => C4::Context->preference("IntranetFavicon"),
1246         IntranetUserCSS                       => C4::Context->preference("IntranetUserCSS"),
1247         IntranetUserJS                        => C4::Context->preference("IntranetUserJS"),
1248         IndependentBranches                   => C4::Context->preference("IndependentBranches"),
1249         AutoLocation                          => C4::Context->preference("AutoLocation"),
1250         wrongip                               => $info{'wrongip'},
1251         PatronSelfRegistration                => C4::Context->preference("PatronSelfRegistration"),
1252         PatronSelfRegistrationDefaultCategory => C4::Context->preference("PatronSelfRegistrationDefaultCategory"),
1253         persona                               => C4::Context->preference("Persona"),
1254         opac_css_override                     => $ENV{'OPAC_CSS_OVERRIDE'},
1255     );
1256
1257     $template->param( SCO_login => 1 ) if ( $query->param('sco_user_login') );
1258     $template->param( OpacPublic => C4::Context->preference("OpacPublic") );
1259     $template->param( loginprompt => 1 ) unless $info{'nopermission'};
1260
1261     if ( $type eq 'opac' ) {
1262         require Koha::Virtualshelves;
1263         my $some_public_shelves = Koha::Virtualshelves->get_some_shelves(
1264             {
1265                 category       => 2,
1266             }
1267         );
1268         $template->param(
1269             some_public_shelves  => $some_public_shelves,
1270         );
1271     }
1272
1273     if ($cas) {
1274
1275         # Is authentication against multiple CAS servers enabled?
1276         if ( C4::Auth_with_cas::multipleAuth && !$casparam ) {
1277             my $casservers = C4::Auth_with_cas::getMultipleAuth();
1278             my @tmplservers;
1279             foreach my $key ( keys %$casservers ) {
1280                 push @tmplservers, { name => $key, value => login_cas_url( $query, $key, $type ) . "?cas=$key" };
1281             }
1282             $template->param(
1283                 casServersLoop => \@tmplservers
1284             );
1285         } else {
1286             $template->param(
1287                 casServerUrl => login_cas_url($query, undef, $type),
1288             );
1289         }
1290
1291         $template->param(
1292             invalidCasLogin => $info{'invalidCasLogin'}
1293         );
1294     }
1295
1296     if ($shib) {
1297         $template->param(
1298             shibbolethAuthentication => $shib,
1299             shibbolethLoginUrl       => login_shib_url($query),
1300         );
1301     }
1302
1303     if (C4::Context->preference('GoogleOpenIDConnect')) {
1304         if ($query->param("OpenIDConnectFailed")) {
1305             my $reason = $query->param('OpenIDConnectFailed');
1306             $template->param(invalidGoogleOpenIDConnectLogin => $reason);
1307         }
1308     }
1309
1310     $template->param(
1311         LibraryName => C4::Context->preference("LibraryName"),
1312     );
1313     $template->param(%info);
1314
1315     #    $cookie = $query->cookie(CGISESSID => $session->id
1316     #   );
1317     print $query->header(
1318         {   type              => 'text/html',
1319             charset           => 'utf-8',
1320             cookie            => $cookie,
1321             'X-Frame-Options' => 'SAMEORIGIN'
1322         }
1323       ),
1324       $template->output;
1325     safe_exit;
1326 }
1327
1328 =head2 check_api_auth
1329
1330   ($status, $cookie, $sessionId) = check_api_auth($query, $userflags);
1331
1332 Given a CGI query containing the parameters 'userid' and 'password' and/or a session
1333 cookie, determine if the user has the privileges specified by C<$userflags>.
1334
1335 C<check_api_auth> is is meant for authenticating users of web services, and
1336 consequently will always return and will not attempt to redirect the user
1337 agent.
1338
1339 If a valid session cookie is already present, check_api_auth will return a status
1340 of "ok", the cookie, and the Koha session ID.
1341
1342 If no session cookie is present, check_api_auth will check the 'userid' and 'password
1343 parameters and create a session cookie and Koha session if the supplied credentials
1344 are OK.
1345
1346 Possible return values in C<$status> are:
1347
1348 =over
1349
1350 =item "ok" -- user authenticated; C<$cookie> and C<$sessionid> have valid values.
1351
1352 =item "failed" -- credentials are not correct; C<$cookie> and C<$sessionid> are undef
1353
1354 =item "maintenance" -- DB is in maintenance mode; no login possible at the moment
1355
1356 =item "expired -- session cookie has expired; API user should resubmit userid and password
1357
1358 =back
1359
1360 =cut
1361
1362 sub check_api_auth {
1363     my $query         = shift;
1364     my $flagsrequired = shift;
1365
1366     my $dbh     = C4::Context->dbh;
1367     my $timeout = _timeout_syspref();
1368
1369     unless ( C4::Context->preference('Version') ) {
1370
1371         # database has not been installed yet
1372         return ( "maintenance", undef, undef );
1373     }
1374     my $kohaversion = Koha::version();
1375     $kohaversion =~ s/(.*\..*)\.(.*)\.(.*)/$1$2$3/;
1376     if ( C4::Context->preference('Version') < $kohaversion ) {
1377
1378         # database in need of version update; assume that
1379         # no API should be called while databsae is in
1380         # this condition.
1381         return ( "maintenance", undef, undef );
1382     }
1383
1384     # FIXME -- most of what follows is a copy-and-paste
1385     # of code from checkauth.  There is an obvious need
1386     # for refactoring to separate the various parts of
1387     # the authentication code, but as of 2007-11-19 this
1388     # is deferred so as to not introduce bugs into the
1389     # regular authentication code for Koha 3.0.
1390
1391     # see if we have a valid session cookie already
1392     # however, if a userid parameter is present (i.e., from
1393     # a form submission, assume that any current cookie
1394     # is to be ignored
1395     my $sessionID = undef;
1396     unless ( $query->param('userid') ) {
1397         $sessionID = $query->cookie("CGISESSID");
1398     }
1399     if ( $sessionID && not( $cas && $query->param('PT') ) ) {
1400         my $session = get_session($sessionID);
1401         C4::Context->_new_userenv($sessionID);
1402         if ($session) {
1403             C4::Context->set_userenv(
1404                 $session->param('number'),       $session->param('id'),
1405                 $session->param('cardnumber'),   $session->param('firstname'),
1406                 $session->param('surname'),      $session->param('branch'),
1407                 $session->param('branchname'),   $session->param('flags'),
1408                 $session->param('emailaddress'), $session->param('branchprinter')
1409             );
1410
1411             my $ip       = $session->param('ip');
1412             my $lasttime = $session->param('lasttime');
1413             my $userid   = $session->param('id');
1414             if ( $lasttime < time() - $timeout ) {
1415
1416                 # time out
1417                 $session->delete();
1418                 $session->flush;
1419                 C4::Context->_unset_userenv($sessionID);
1420                 $userid    = undef;
1421                 $sessionID = undef;
1422                 return ( "expired", undef, undef );
1423             } elsif ( C4::Context->preference('SessionRestrictionByIP') && $ip ne $ENV{'REMOTE_ADDR'} ) {
1424
1425                 # IP address changed
1426                 $session->delete();
1427                 $session->flush;
1428                 C4::Context->_unset_userenv($sessionID);
1429                 $userid    = undef;
1430                 $sessionID = undef;
1431                 return ( "expired", undef, undef );
1432             } else {
1433                 my $cookie = $query->cookie(
1434                     -name     => 'CGISESSID',
1435                     -value    => $session->id,
1436                     -HttpOnly => 1,
1437                 );
1438                 $session->param( 'lasttime', time() );
1439                 my $flags = haspermission( $userid, $flagsrequired );
1440                 if ($flags) {
1441                     return ( "ok", $cookie, $sessionID );
1442                 } else {
1443                     $session->delete();
1444                     $session->flush;
1445                     C4::Context->_unset_userenv($sessionID);
1446                     $userid    = undef;
1447                     $sessionID = undef;
1448                     return ( "failed", undef, undef );
1449                 }
1450             }
1451         } else {
1452             return ( "expired", undef, undef );
1453         }
1454     } else {
1455
1456         # new login
1457         my $userid   = $query->param('userid');
1458         my $password = $query->param('password');
1459         my ( $return, $cardnumber );
1460
1461         # Proxy CAS auth
1462         if ( $cas && $query->param('PT') ) {
1463             my $retuserid;
1464             $debug and print STDERR "## check_api_auth - checking CAS\n";
1465
1466             # In case of a CAS authentication, we use the ticket instead of the password
1467             my $PT = $query->param('PT');
1468             ( $return, $cardnumber, $userid ) = check_api_auth_cas( $dbh, $PT, $query );    # EXTERNAL AUTH
1469         } else {
1470
1471             # User / password auth
1472             unless ( $userid and $password ) {
1473
1474                 # caller did something wrong, fail the authenticateion
1475                 return ( "failed", undef, undef );
1476             }
1477             ( $return, $cardnumber ) = checkpw( $dbh, $userid, $password, $query );
1478         }
1479
1480         if ( $return and haspermission( $userid, $flagsrequired ) ) {
1481             my $session = get_session("");
1482             return ( "failed", undef, undef ) unless $session;
1483
1484             my $sessionID = $session->id;
1485             C4::Context->_new_userenv($sessionID);
1486             my $cookie = $query->cookie(
1487                 -name     => 'CGISESSID',
1488                 -value    => $sessionID,
1489                 -HttpOnly => 1,
1490             );
1491             if ( $return == 1 ) {
1492                 my (
1493                     $borrowernumber, $firstname,  $surname,
1494                     $userflags,      $branchcode, $branchname,
1495                     $branchprinter,  $emailaddress
1496                 );
1497                 my $sth =
1498                   $dbh->prepare(
1499 "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=?"
1500                   );
1501                 $sth->execute($userid);
1502                 (
1503                     $borrowernumber, $firstname,  $surname,
1504                     $userflags,      $branchcode, $branchname,
1505                     $branchprinter,  $emailaddress
1506                 ) = $sth->fetchrow if ( $sth->rows );
1507
1508                 unless ( $sth->rows ) {
1509                     my $sth = $dbh->prepare(
1510 "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=?"
1511                     );
1512                     $sth->execute($cardnumber);
1513                     (
1514                         $borrowernumber, $firstname,  $surname,
1515                         $userflags,      $branchcode, $branchname,
1516                         $branchprinter,  $emailaddress
1517                     ) = $sth->fetchrow if ( $sth->rows );
1518
1519                     unless ( $sth->rows ) {
1520                         $sth->execute($userid);
1521                         (
1522                             $borrowernumber, $firstname,  $surname,       $userflags,
1523                             $branchcode,     $branchname, $branchprinter, $emailaddress
1524                         ) = $sth->fetchrow if ( $sth->rows );
1525                     }
1526                 }
1527
1528                 my $ip = $ENV{'REMOTE_ADDR'};
1529
1530                 # if they specify at login, use that
1531                 if ( $query->param('branch') ) {
1532                     $branchcode = $query->param('branch');
1533                     $branchname = GetBranchName($branchcode);
1534                 }
1535                 my $branches = GetBranches();
1536                 my @branchesloop;
1537                 foreach my $br ( keys %$branches ) {
1538
1539                     #     now we work with the treatment of ip
1540                     my $domain = $branches->{$br}->{'branchip'};
1541                     if ( $domain && $ip =~ /^$domain/ ) {
1542                         $branchcode = $branches->{$br}->{'branchcode'};
1543
1544                         # new op dev : add the branchprinter and branchname in the cookie
1545                         $branchprinter = $branches->{$br}->{'branchprinter'};
1546                         $branchname    = $branches->{$br}->{'branchname'};
1547                     }
1548                 }
1549                 $session->param( 'number',       $borrowernumber );
1550                 $session->param( 'id',           $userid );
1551                 $session->param( 'cardnumber',   $cardnumber );
1552                 $session->param( 'firstname',    $firstname );
1553                 $session->param( 'surname',      $surname );
1554                 $session->param( 'branch',       $branchcode );
1555                 $session->param( 'branchname',   $branchname );
1556                 $session->param( 'flags',        $userflags );
1557                 $session->param( 'emailaddress', $emailaddress );
1558                 $session->param( 'ip',           $session->remote_addr() );
1559                 $session->param( 'lasttime',     time() );
1560             } elsif ( $return == 2 ) {
1561
1562                 #We suppose the user is the superlibrarian
1563                 $session->param( 'number',       0 );
1564                 $session->param( 'id',           C4::Context->config('user') );
1565                 $session->param( 'cardnumber',   C4::Context->config('user') );
1566                 $session->param( 'firstname',    C4::Context->config('user') );
1567                 $session->param( 'surname',      C4::Context->config('user') );
1568                 $session->param( 'branch',       'NO_LIBRARY_SET' );
1569                 $session->param( 'branchname',   'NO_LIBRARY_SET' );
1570                 $session->param( 'flags',        1 );
1571                 $session->param( 'emailaddress', C4::Context->preference('KohaAdminEmailAddress') );
1572                 $session->param( 'ip',           $session->remote_addr() );
1573                 $session->param( 'lasttime',     time() );
1574             }
1575             C4::Context->set_userenv(
1576                 $session->param('number'),       $session->param('id'),
1577                 $session->param('cardnumber'),   $session->param('firstname'),
1578                 $session->param('surname'),      $session->param('branch'),
1579                 $session->param('branchname'),   $session->param('flags'),
1580                 $session->param('emailaddress'), $session->param('branchprinter')
1581             );
1582             return ( "ok", $cookie, $sessionID );
1583         } else {
1584             return ( "failed", undef, undef );
1585         }
1586     }
1587 }
1588
1589 =head2 check_cookie_auth
1590
1591   ($status, $sessionId) = check_api_auth($cookie, $userflags);
1592
1593 Given a CGISESSID cookie set during a previous login to Koha, determine
1594 if the user has the privileges specified by C<$userflags>.
1595
1596 C<check_cookie_auth> is meant for authenticating special services
1597 such as tools/upload-file.pl that are invoked by other pages that
1598 have been authenticated in the usual way.
1599
1600 Possible return values in C<$status> are:
1601
1602 =over
1603
1604 =item "ok" -- user authenticated; C<$sessionID> have valid values.
1605
1606 =item "failed" -- credentials are not correct; C<$sessionid> are undef
1607
1608 =item "maintenance" -- DB is in maintenance mode; no login possible at the moment
1609
1610 =item "expired -- session cookie has expired; API user should resubmit userid and password
1611
1612 =back
1613
1614 =cut
1615
1616 sub check_cookie_auth {
1617     my $cookie        = shift;
1618     my $flagsrequired = shift;
1619
1620     my $dbh     = C4::Context->dbh;
1621     my $timeout = _timeout_syspref();
1622
1623     unless ( C4::Context->preference('Version') ) {
1624
1625         # database has not been installed yet
1626         return ( "maintenance", undef );
1627     }
1628     my $kohaversion = Koha::version();
1629     $kohaversion =~ s/(.*\..*)\.(.*)\.(.*)/$1$2$3/;
1630     if ( C4::Context->preference('Version') < $kohaversion ) {
1631
1632         # database in need of version update; assume that
1633         # no API should be called while databsae is in
1634         # this condition.
1635         return ( "maintenance", undef );
1636     }
1637
1638     # FIXME -- most of what follows is a copy-and-paste
1639     # of code from checkauth.  There is an obvious need
1640     # for refactoring to separate the various parts of
1641     # the authentication code, but as of 2007-11-23 this
1642     # is deferred so as to not introduce bugs into the
1643     # regular authentication code for Koha 3.0.
1644
1645     # see if we have a valid session cookie already
1646     # however, if a userid parameter is present (i.e., from
1647     # a form submission, assume that any current cookie
1648     # is to be ignored
1649     unless ( defined $cookie and $cookie ) {
1650         return ( "failed", undef );
1651     }
1652     my $sessionID = $cookie;
1653     my $session   = get_session($sessionID);
1654     C4::Context->_new_userenv($sessionID);
1655     if ($session) {
1656         C4::Context->set_userenv(
1657             $session->param('number'),       $session->param('id'),
1658             $session->param('cardnumber'),   $session->param('firstname'),
1659             $session->param('surname'),      $session->param('branch'),
1660             $session->param('branchname'),   $session->param('flags'),
1661             $session->param('emailaddress'), $session->param('branchprinter')
1662         );
1663
1664         my $ip       = $session->param('ip');
1665         my $lasttime = $session->param('lasttime');
1666         my $userid   = $session->param('id');
1667         if ( $lasttime < time() - $timeout ) {
1668
1669             # time out
1670             $session->delete();
1671             $session->flush;
1672             C4::Context->_unset_userenv($sessionID);
1673             $userid    = undef;
1674             $sessionID = undef;
1675             return ("expired", undef);
1676         } elsif ( C4::Context->preference('SessionRestrictionByIP') && $ip ne $ENV{'REMOTE_ADDR'} ) {
1677
1678             # IP address changed
1679             $session->delete();
1680             $session->flush;
1681             C4::Context->_unset_userenv($sessionID);
1682             $userid    = undef;
1683             $sessionID = undef;
1684             return ( "expired", undef );
1685         } else {
1686             $session->param( 'lasttime', time() );
1687             my $flags = haspermission( $userid, $flagsrequired );
1688             if ($flags) {
1689                 return ( "ok", $sessionID );
1690             } else {
1691                 $session->delete();
1692                 $session->flush;
1693                 C4::Context->_unset_userenv($sessionID);
1694                 $userid    = undef;
1695                 $sessionID = undef;
1696                 return ( "failed", undef );
1697             }
1698         }
1699     } else {
1700         return ( "expired", undef );
1701     }
1702 }
1703
1704 =head2 get_session
1705
1706   use CGI::Session;
1707   my $session = get_session($sessionID);
1708
1709 Given a session ID, retrieve the CGI::Session object used to store
1710 the session's state.  The session object can be used to store
1711 data that needs to be accessed by different scripts during a
1712 user's session.
1713
1714 If the C<$sessionID> parameter is an empty string, a new session
1715 will be created.
1716
1717 =cut
1718
1719 sub get_session {
1720     my $sessionID      = shift;
1721     my $storage_method = C4::Context->preference('SessionStorage');
1722     my $dbh            = C4::Context->dbh;
1723     my $session;
1724     if ( $storage_method eq 'mysql' ) {
1725         $session = new CGI::Session( "driver:MySQL;serializer:yaml;id:md5", $sessionID, { Handle => $dbh } );
1726     }
1727     elsif ( $storage_method eq 'Pg' ) {
1728         $session = new CGI::Session( "driver:PostgreSQL;serializer:yaml;id:md5", $sessionID, { Handle => $dbh } );
1729     }
1730     elsif ( $storage_method eq 'memcached' && C4::Context->ismemcached ) {
1731         $session = new CGI::Session( "driver:memcached;serializer:yaml;id:md5", $sessionID, { Memcached => C4::Context->memcached } );
1732     }
1733     else {
1734         # catch all defaults to tmp should work on all systems
1735         my $dir = File::Spec->tmpdir;
1736         my $instance = C4::Context->config( 'database' ); #actually for packages not exactly the instance name, but generally safer to leave it as it is
1737         $session = new CGI::Session( "driver:File;serializer:yaml;id:md5", $sessionID, { Directory => "$dir/cgisess_$instance" } );
1738     }
1739     return $session;
1740 }
1741
1742
1743 # FIXME no_set_userenv may be replaced with force_branchcode_for_userenv
1744 # (or something similar)
1745 # Currently it's only passed from C4::SIP::ILS::Patron::check_password, but
1746 # not having a userenv defined could cause a crash.
1747 sub checkpw {
1748     my ( $dbh, $userid, $password, $query, $type, $no_set_userenv ) = @_;
1749     $type = 'opac' unless $type;
1750     if ($ldap) {
1751         $debug and print STDERR "## checkpw - checking LDAP\n";
1752         my ( $retval, $retcard, $retuserid ) = checkpw_ldap(@_);    # EXTERNAL AUTH
1753         return 0 if $retval == -1;                                  # Incorrect password for LDAP login attempt
1754         ($retval) and return ( $retval, $retcard, $retuserid );
1755     }
1756
1757     if ( $cas && $query && $query->param('ticket') ) {
1758         $debug and print STDERR "## checkpw - checking CAS\n";
1759
1760         # In case of a CAS authentication, we use the ticket instead of the password
1761         my $ticket = $query->param('ticket');
1762         $query->delete('ticket');                                   # remove ticket to come back to original URL
1763         my ( $retval, $retcard, $retuserid ) = checkpw_cas( $dbh, $ticket, $query, $type );    # EXTERNAL AUTH
1764         ($retval) and return ( $retval, $retcard, $retuserid );
1765         return 0;
1766     }
1767
1768     # If we are in a shibboleth session (shibboleth is enabled, and a shibboleth match attribute is present)
1769     # Check for password to asertain whether we want to be testing against shibboleth or another method this
1770     # time around.
1771     if ( $shib && $shib_login && !$password ) {
1772
1773         $debug and print STDERR "## checkpw - checking Shibboleth\n";
1774
1775         # In case of a Shibboleth authentication, we expect a shibboleth user attribute
1776         # (defined under shibboleth mapping in koha-conf.xml) to contain the login of the
1777         # shibboleth-authenticated user
1778
1779         # Then, we check if it matches a valid koha user
1780         if ($shib_login) {
1781             my ( $retval, $retcard, $retuserid ) = C4::Auth_with_shibboleth::checkpw_shib($shib_login);    # EXTERNAL AUTH
1782             ($retval) and return ( $retval, $retcard, $retuserid );
1783             return 0;
1784         }
1785     }
1786
1787     # INTERNAL AUTH
1788     return checkpw_internal( $dbh, $userid, $password, $no_set_userenv);
1789 }
1790
1791 sub checkpw_internal {
1792     my ( $dbh, $userid, $password, $no_set_userenv ) = @_;
1793
1794     $password = Encode::encode( 'UTF-8', $password )
1795       if Encode::is_utf8($password);
1796
1797     if ( $userid && $userid eq C4::Context->config('user') ) {
1798         if ( $password && $password eq C4::Context->config('pass') ) {
1799
1800             # Koha superuser account
1801             #     C4::Context->set_userenv(0,0,C4::Context->config('user'),C4::Context->config('user'),C4::Context->config('user'),"",1);
1802             return 2;
1803         }
1804         else {
1805             return 0;
1806         }
1807     }
1808
1809     my $sth =
1810       $dbh->prepare(
1811         "select password,cardnumber,borrowernumber,userid,firstname,surname,borrowers.branchcode,branches.branchname,flags from borrowers join branches on borrowers.branchcode=branches.branchcode where userid=?"
1812       );
1813     $sth->execute($userid);
1814     if ( $sth->rows ) {
1815         my ( $stored_hash, $cardnumber, $borrowernumber, $userid, $firstname,
1816             $surname, $branchcode, $branchname, $flags )
1817           = $sth->fetchrow;
1818
1819         if ( checkpw_hash( $password, $stored_hash ) ) {
1820
1821             C4::Context->set_userenv( "$borrowernumber", $userid, $cardnumber,
1822                 $firstname, $surname, $branchcode, $branchname, $flags ) unless $no_set_userenv;
1823             return 1, $cardnumber, $userid;
1824         }
1825     }
1826     $sth =
1827       $dbh->prepare(
1828         "select password,cardnumber,borrowernumber,userid,firstname,surname,borrowers.branchcode,branches.branchname,flags from borrowers join branches on borrowers.branchcode=branches.branchcode where cardnumber=?"
1829       );
1830     $sth->execute($userid);
1831     if ( $sth->rows ) {
1832         my ( $stored_hash, $cardnumber, $borrowernumber, $userid, $firstname,
1833             $surname, $branchcode, $branchname, $flags )
1834           = $sth->fetchrow;
1835
1836         if ( checkpw_hash( $password, $stored_hash ) ) {
1837
1838             C4::Context->set_userenv( $borrowernumber, $userid, $cardnumber,
1839                 $firstname, $surname, $branchcode, $branchname, $flags ) unless $no_set_userenv;
1840             return 1, $cardnumber, $userid;
1841         }
1842     }
1843     if ( $userid && $userid eq 'demo'
1844         && "$password" eq 'demo'
1845         && C4::Context->config('demo') )
1846     {
1847
1848         # DEMO => the demo user is allowed to do everything (if demo set to 1 in koha.conf
1849         # some features won't be effective : modify systempref, modify MARC structure,
1850         return 2;
1851     }
1852     return 0;
1853 }
1854
1855 sub checkpw_hash {
1856     my ( $password, $stored_hash ) = @_;
1857
1858     return if $stored_hash eq '!';
1859
1860     # check what encryption algorithm was implemented: Bcrypt - if the hash starts with '$2' it is Bcrypt else md5
1861     my $hash;
1862     if ( substr( $stored_hash, 0, 2 ) eq '$2' ) {
1863         $hash = hash_password( $password, $stored_hash );
1864     } else {
1865         $hash = md5_base64($password);
1866     }
1867     return $hash eq $stored_hash;
1868 }
1869
1870 =head2 getuserflags
1871
1872     my $authflags = getuserflags($flags, $userid, [$dbh]);
1873
1874 Translates integer flags into permissions strings hash.
1875
1876 C<$flags> is the integer userflags value ( borrowers.userflags )
1877 C<$userid> is the members.userid, used for building subpermissions
1878 C<$authflags> is a hashref of permissions
1879
1880 =cut
1881
1882 sub getuserflags {
1883     my $flags  = shift;
1884     my $userid = shift;
1885     my $dbh    = @_ ? shift : C4::Context->dbh;
1886     my $userflags;
1887     {
1888         # I don't want to do this, but if someone logs in as the database
1889         # user, it would be preferable not to spam them to death with
1890         # numeric warnings. So, we make $flags numeric.
1891         no warnings 'numeric';
1892         $flags += 0;
1893     }
1894     my $sth = $dbh->prepare("SELECT bit, flag, defaulton FROM userflags");
1895     $sth->execute;
1896
1897     while ( my ( $bit, $flag, $defaulton ) = $sth->fetchrow ) {
1898         if ( ( $flags & ( 2**$bit ) ) || $defaulton ) {
1899             $userflags->{$flag} = 1;
1900         }
1901         else {
1902             $userflags->{$flag} = 0;
1903         }
1904     }
1905
1906     # get subpermissions and merge with top-level permissions
1907     my $user_subperms = get_user_subpermissions($userid);
1908     foreach my $module ( keys %$user_subperms ) {
1909         next if $userflags->{$module} == 1;    # user already has permission for everything in this module
1910         $userflags->{$module} = $user_subperms->{$module};
1911     }
1912
1913     return $userflags;
1914 }
1915
1916 =head2 get_user_subpermissions
1917
1918   $user_perm_hashref = get_user_subpermissions($userid);
1919
1920 Given the userid (note, not the borrowernumber) of a staff user,
1921 return a hashref of hashrefs of the specific subpermissions
1922 accorded to the user.  An example return is
1923
1924  {
1925     tools => {
1926         export_catalog => 1,
1927         import_patrons => 1,
1928     }
1929  }
1930
1931 The top-level hash-key is a module or function code from
1932 userflags.flag, while the second-level key is a code
1933 from permissions.
1934
1935 The results of this function do not give a complete picture
1936 of the functions that a staff user can access; it is also
1937 necessary to check borrowers.flags.
1938
1939 =cut
1940
1941 sub get_user_subpermissions {
1942     my $userid = shift;
1943
1944     my $dbh = C4::Context->dbh;
1945     my $sth = $dbh->prepare( "SELECT flag, user_permissions.code
1946                              FROM user_permissions
1947                              JOIN permissions USING (module_bit, code)
1948                              JOIN userflags ON (module_bit = bit)
1949                              JOIN borrowers USING (borrowernumber)
1950                              WHERE userid = ?" );
1951     $sth->execute($userid);
1952
1953     my $user_perms = {};
1954     while ( my $perm = $sth->fetchrow_hashref ) {
1955         $user_perms->{ $perm->{'flag'} }->{ $perm->{'code'} } = 1;
1956     }
1957     return $user_perms;
1958 }
1959
1960 =head2 get_all_subpermissions
1961
1962   my $perm_hashref = get_all_subpermissions();
1963
1964 Returns a hashref of hashrefs defining all specific
1965 permissions currently defined.  The return value
1966 has the same structure as that of C<get_user_subpermissions>,
1967 except that the innermost hash value is the description
1968 of the subpermission.
1969
1970 =cut
1971
1972 sub get_all_subpermissions {
1973     my $dbh = C4::Context->dbh;
1974     my $sth = $dbh->prepare( "SELECT flag, code
1975                              FROM permissions
1976                              JOIN userflags ON (module_bit = bit)" );
1977     $sth->execute();
1978
1979     my $all_perms = {};
1980     while ( my $perm = $sth->fetchrow_hashref ) {
1981         $all_perms->{ $perm->{'flag'} }->{ $perm->{'code'} } = 1;
1982     }
1983     return $all_perms;
1984 }
1985
1986 =head2 haspermission
1987
1988   $flags = ($userid, $flagsrequired);
1989
1990 C<$userid> the userid of the member
1991 C<$flags> is a hashref of required flags like C<$borrower-&lt;{authflags}>
1992
1993 Returns member's flags or 0 if a permission is not met.
1994
1995 =cut
1996
1997 sub haspermission {
1998     my ( $userid, $flagsrequired ) = @_;
1999     my $sth = C4::Context->dbh->prepare("SELECT flags FROM borrowers WHERE userid=?");
2000     $sth->execute($userid);
2001     my $row = $sth->fetchrow();
2002     my $flags = getuserflags( $row, $userid );
2003     if ( $userid eq C4::Context->config('user') ) {
2004
2005         # Super User Account from /etc/koha.conf
2006         $flags->{'superlibrarian'} = 1;
2007     }
2008     elsif ( $userid eq 'demo' && C4::Context->config('demo') ) {
2009
2010         # Demo user that can do "anything" (demo=1 in /etc/koha.conf)
2011         $flags->{'superlibrarian'} = 1;
2012     }
2013
2014     return $flags if $flags->{superlibrarian};
2015
2016     foreach my $module ( keys %$flagsrequired ) {
2017         my $subperm = $flagsrequired->{$module};
2018         if ( $subperm eq '*' ) {
2019             return 0 unless ( $flags->{$module} == 1 or ref( $flags->{$module} ) );
2020         } else {
2021             return 0 unless (
2022                 ( defined $flags->{$module} and
2023                     $flags->{$module} == 1 )
2024                 or
2025                 ( ref( $flags->{$module} ) and
2026                     exists $flags->{$module}->{$subperm} and
2027                     $flags->{$module}->{$subperm} == 1 )
2028             );
2029         }
2030     }
2031     return $flags;
2032
2033     #FIXME - This fcn should return the failed permission so a suitable error msg can be delivered.
2034 }
2035
2036 sub getborrowernumber {
2037     my ($userid) = @_;
2038     my $userenv = C4::Context->userenv;
2039     if ( defined($userenv) && ref($userenv) eq 'HASH' && $userenv->{number} ) {
2040         return $userenv->{number};
2041     }
2042     my $dbh = C4::Context->dbh;
2043     for my $field ( 'userid', 'cardnumber' ) {
2044         my $sth =
2045           $dbh->prepare("select borrowernumber from borrowers where $field=?");
2046         $sth->execute($userid);
2047         if ( $sth->rows ) {
2048             my ($bnumber) = $sth->fetchrow;
2049             return $bnumber;
2050         }
2051     }
2052     return 0;
2053 }
2054
2055 END { }    # module clean-up code here (global destructor)
2056 1;
2057 __END__
2058
2059 =head1 SEE ALSO
2060
2061 CGI(3)
2062
2063 C4::Output(3)
2064
2065 Crypt::Eksblowfish::Bcrypt(3)
2066
2067 Digest::MD5(3)
2068
2069 =cut