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 JSON qw/encode_json/;
  24 use URI::Escape;
  25 use CGI::Session;
  26
  27 require Exporter;
  28 use C4::Context;
  29 use C4::Templates;    # to get the template
  30 use C4::Languages;
  31 use C4::Branch;       # GetBranches
  32 use C4::Search::History;
  33 use C4::VirtualShelves;
  34 use Koha::AuthUtils qw(hash_password);
  35 use POSIX qw/strftime/;
  36 use List::MoreUtils qw/ any /;
  37
  38 # use utf8;
  39 use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $debug $ldap $cas $caslogout $shib $shib_login);
  40
  41 BEGIN {
  42     sub psgi_env { any { /^psgi\./ } keys %ENV }
  43
  44     sub safe_exit {
  45         if   (psgi_env) { die 'psgi:exit' }
  46         else            { exit }
  47     }
  48     $VERSION = 3.07.00.049;    # set version for version checking
  49
  50     $debug     = $ENV{DEBUG};
  51     @ISA       = qw(Exporter);
  52     @EXPORT    = qw(&checkauth &get_template_and_user &haspermission &get_user_subpermissions);
  53     @EXPORT_OK = qw(&check_api_auth &get_session &check_cookie_auth &checkpw &checkpw_internal &checkpw_hash
  54       &get_all_subpermissions &get_user_subpermissions
  55     );
  56     %EXPORT_TAGS = ( EditPermissions => [qw(get_all_subpermissions get_user_subpermissions)] );
  57     $ldap      = C4::Context->config('useldapserver') || 0;
  58     $cas       = C4::Context->preference('casAuthentication');
  59     $shib      = C4::Context->config('useshibboleth') || 0;
  60     $caslogout = C4::Context->preference('casLogout');
  61     require C4::Auth_with_cas;    # no import
  62
  63     if ($ldap) {
  64         require C4::Auth_with_ldap;
  65         import C4::Auth_with_ldap qw(checkpw_ldap);
  66     }
  67     if ($shib) {
  68         require C4::Auth_with_shibboleth;
  69         import C4::Auth_with_shibboleth
  70           qw(shib_ok checkpw_shib logout_shib login_shib_url get_login_shib);
  71
  72         # Check for good config
  73         if ( shib_ok() ) {
  74
  75             # Get shibboleth login attribute
  76             $shib_login = get_login_shib();
  77         }
  78
  79         # Bad config, disable shibboleth
  80         else {
  81             $shib = 0;
  82         }
  83     }
  84     if ($cas) {
  85         import C4::Auth_with_cas qw(check_api_auth_cas checkpw_cas login_cas logout_cas login_cas_url);
  86     }
  87
  88 }
  89
  90 =head1 NAME
  91
  92 C4::Auth - Authenticates Koha users
  93
  94 =head1 SYNOPSIS
  95
  96   use CGI;
  97   use C4::Auth;
  98   use C4::Output;
  99
 100   my $query = new CGI;
 101
 102   my ($template, $borrowernumber, $cookie)
 103     = get_template_and_user(
 104         {
 105             template_name   => "opac-main.tt",
 106             query           => $query,
 107       type            => "opac",
 108       authnotrequired => 0,
 109       flagsrequired   => {borrow => 1, catalogue => '*', tools => 'import_patrons' },
 110   }
 111     );
 112
 113   output_html_with_http_headers $query, $cookie, $template->output;
 114
 115 =head1 DESCRIPTION
 116
 117 The main function of this module is to provide
 118 authentification. However the get_template_and_user function has
 119 been provided so that a users login information is passed along
 120 automatically. This gets loaded into the template.
 121
 122 =head1 FUNCTIONS
 123
 124 =head2 get_template_and_user
 125
 126  my ($template, $borrowernumber, $cookie)
 127      = get_template_and_user(
 128        {
 129          template_name   => "opac-main.tt",
 130          query           => $query,
 131          type            => "opac",
 132          authnotrequired => 0,
 133          flagsrequired   => {borrow => 1, catalogue => '*', tools => 'import_patrons' },
 134        }
 135      );
 136
 137 This call passes the C<query>, C<flagsrequired> and C<authnotrequired>
 138 to C<&checkauth> (in this module) to perform authentification.
 139 See C<&checkauth> for an explanation of these parameters.
 140
 141 The C<template_name> is then used to find the correct template for
 142 the page. The authenticated users details are loaded onto the
 143 template in the HTML::Template LOOP variable C<USER_INFO>. Also the
 144 C<sessionID> is passed to the template. This can be used in templates
 145 if cookies are disabled. It needs to be put as and input to every
 146 authenticated page.
 147
 148 More information on the C<gettemplate> sub can be found in the
 149 Output.pm module.
 150
 151 =cut
 152
 153 sub get_template_and_user {
 154
 155     my $in = shift;
 156     my ( $user, $cookie, $sessionID, $flags );
 157
 158     C4::Context->interface( $in->{type} );
 159
 160     $in->{'authnotrequired'} ||= 0;
 161     my $template = C4::Templates::gettemplate(
 162         $in->{'template_name'},
 163         $in->{'type'},
 164         $in->{'query'},
 165         $in->{'is_plugin'}
 166     );
 167
 168     if ( $in->{'template_name'} !~ m/maintenance/ ) {
 169         ( $user, $cookie, $sessionID, $flags ) = checkauth(
 170             $in->{'query'},
 171             $in->{'authnotrequired'},
 172             $in->{'flagsrequired'},
 173             $in->{'type'}
 174         );
 175     }
 176
 177     my $borrowernumber;
 178     if ($user) {
 179         require C4::Members;
 180
 181         # It's possible for $user to be the borrowernumber if they don't have a
 182         # userid defined (and are logging in through some other method, such
 183         # as SSL certs against an email address)
 184         $borrowernumber = getborrowernumber($user) if defined($user);
 185         if ( !defined($borrowernumber) && defined($user) ) {
 186             my $borrower = C4::Members::GetMember( borrowernumber => $user );
 187             if ($borrower) {
 188                 $borrowernumber = $user;
 189
 190                 # A bit of a hack, but I don't know there's a nicer way
 191                 # to do it.
 192                 $user = $borrower->{firstname} . ' ' . $borrower->{surname};
 193             }
 194         }
 195
 196         # user info
 197         $template->param( loggedinusername   => $user );
 198         $template->param( loggedinusernumber => $borrowernumber );
 199         $template->param( sessionID          => $sessionID );
 200
 201         my ( $total, $pubshelves, $barshelves ) = C4::VirtualShelves::GetSomeShelfNames( $borrowernumber, 'MASTHEAD' );
 202         $template->param(
 203             pubshelves     => $total->{pubtotal},
 204             pubshelvesloop => $pubshelves,
 205             barshelves     => $total->{bartotal},
 206             barshelvesloop => $barshelves,
 207         );
 208
 209         my ($borr) = C4::Members::GetMemberDetails($borrowernumber);
 210         my @bordat;
 211         $bordat[0] = $borr;
 212         $template->param( "USER_INFO" => \@bordat );
 213
 214         my $all_perms = get_all_subpermissions();
 215
 216         my @flagroots = qw(circulate catalogue parameters borrowers permissions reserveforothers borrow
 217           editcatalogue updatecharges management tools editauthorities serials reports acquisition);
 218
 219         # We are going to use the $flags returned by checkauth
 220         # to create the template's parameters that will indicate
 221         # which menus the user can access.
 222         if ( $flags && $flags->{superlibrarian} == 1 ) {
 223             $template->param( CAN_user_circulate        => 1 );
 224             $template->param( CAN_user_catalogue        => 1 );
 225             $template->param( CAN_user_parameters       => 1 );
 226             $template->param( CAN_user_borrowers        => 1 );
 227             $template->param( CAN_user_permissions      => 1 );
 228             $template->param( CAN_user_reserveforothers => 1 );
 229             $template->param( CAN_user_borrow           => 1 );
 230             $template->param( CAN_user_editcatalogue    => 1 );
 231             $template->param( CAN_user_updatecharges    => 1 );
 232             $template->param( CAN_user_acquisition      => 1 );
 233             $template->param( CAN_user_management       => 1 );
 234             $template->param( CAN_user_tools            => 1 );
 235             $template->param( CAN_user_editauthorities  => 1 );
 236             $template->param( CAN_user_serials          => 1 );
 237             $template->param( CAN_user_reports          => 1 );
 238             $template->param( CAN_user_staffaccess      => 1 );
 239             $template->param( CAN_user_plugins          => 1 );
 240             $template->param( CAN_user_coursereserves   => 1 );
 241             foreach my $module ( keys %$all_perms ) {
 242
 243                 foreach my $subperm ( keys %{ $all_perms->{$module} } ) {
 244                     $template->param( "CAN_user_${module}_${subperm}" => 1 );
 245                 }
 246             }
 247         }
 248
 249         if ($flags) {
 250             foreach my $module ( keys %$all_perms ) {
 251                 if ( $flags->{$module} == 1 ) {
 252                     foreach my $subperm ( keys %{ $all_perms->{$module} } ) {
 253                         $template->param( "CAN_user_${module}_${subperm}" => 1 );
 254                     }
 255                 } elsif ( ref( $flags->{$module} ) ) {
 256                     foreach my $subperm ( keys %{ $flags->{$module} } ) {
 257                         $template->param( "CAN_user_${module}_${subperm}" => 1 );
 258                     }
 259                 }
 260             }
 261         }
 262
 263         if ($flags) {
 264             foreach my $module ( keys %$flags ) {
 265                 if ( $flags->{$module} == 1 or ref( $flags->{$module} ) ) {
 266                     $template->param( "CAN_user_$module" => 1 );
 267                     if ( $module eq "parameters" ) {
 268                         $template->param( CAN_user_management => 1 );
 269                     }
 270                 }
 271             }
 272         }
 273
 274         # Logged-in opac search history
 275         # If the requested template is an opac one and opac search history is enabled
 276         if ( $in->{type} eq 'opac' && C4::Context->preference('EnableOpacSearchHistory') ) {
 277             my $dbh   = C4::Context->dbh;
 278             my $query = "SELECT COUNT(*) FROM search_history WHERE userid=?";
 279             my $sth   = $dbh->prepare($query);
 280             $sth->execute($borrowernumber);
 281
 282             # If at least one search has already been performed
 283             if ( $sth->fetchrow_array > 0 ) {
 284
 285                 # We show the link in opac
 286                 $template->param( EnableOpacSearchHistory => 1 );
 287             }
 288
 289             # And if there are searches performed when the user was not logged in,
 290             # we add them to the logged-in search history
 291             my @recentSearches = C4::Search::History::get_from_session( { cgi => $in->{'query'} } );
 292             if (@recentSearches) {
 293                 my $dbh   = C4::Context->dbh;
 294                 my $query = q{
 295                     INSERT INTO search_history(userid, sessionid, query_desc, query_cgi, type,  total, time )
 296                     VALUES (?, ?, ?, ?, ?, ?, ?)
 297                 };
 298
 299                 my $sth = $dbh->prepare($query);
 300                 $sth->execute( $borrowernumber,
 301                     $in->{query}->cookie("CGISESSID"),
 302                     $_->{query_desc},
 303                     $_->{query_cgi},
 304                     $_->{type} || 'biblio',
 305                     $_->{total},
 306                     $_->{time},
 307                 ) foreach @recentSearches;
 308
 309                 # clear out the search history from the session now that
 310                 # we've saved it to the database
 311                 C4::Search::History::set_to_session( { cgi => $in->{'query'}, search_history => [] } );
 312             }
 313         } elsif ( $in->{type} eq 'intranet' and C4::Context->preference('EnableSearchHistory') ) {
 314             $template->param( EnableSearchHistory => 1 );
 315         }
 316     }
 317     else {    # if this is an anonymous session, setup to display public lists...
 318
 319         # If shibboleth is enabled, and we're in an anonymous session, we should allow
 320         # the user to attemp login via shibboleth.
 321         if ($shib) {
 322             $template->param( shibbolethAuthentication => $shib,
 323                 shibbolethLoginUrl => login_shib_url( $in->{'query'} ),
 324             );
 325
 326             # If shibboleth is enabled and we have a shibboleth login attribute,
 327             # but we are in an anonymous session, then we clearly have an invalid
 328             # shibboleth koha account.
 329             if ($shib_login) {
 330                 $template->param( invalidShibLogin => '1' );
 331             }
 332         }
 333
 334         $template->param( sessionID => $sessionID );
 335
 336         my ( $total, $pubshelves ) = C4::VirtualShelves::GetSomeShelfNames( undef, 'MASTHEAD' );
 337         $template->param(
 338             pubshelves     => $total->{pubtotal},
 339             pubshelvesloop => $pubshelves,
 340         );
 341     }
 342
 343     # Anonymous opac search history
 344     # If opac search history is enabled and at least one search has already been performed
 345     if ( C4::Context->preference('EnableOpacSearchHistory') ) {
 346         my @recentSearches = C4::Search::History::get_from_session( { cgi => $in->{'query'} } );
 347         if (@recentSearches) {
 348             $template->param( EnableOpacSearchHistory => 1 );
 349         }
 350     }
 351
 352     if ( C4::Context->preference('dateformat') ) {
 353         $template->param( dateformat => C4::Context->preference('dateformat') );
 354     }
 355
 356     # these template parameters are set the same regardless of $in->{'type'}
 357
 358     # Set the using_https variable for templates
 359     # FIXME Under Plack the CGI->https method always returns 'OFF'
 360     my $https = $in->{query}->https();
 361     my $using_https = ( defined $https and $https ne 'OFF' ) ? 1 : 0;
 362
 363     $template->param(
 364         "BiblioDefaultView" . C4::Context->preference("BiblioDefaultView") => 1,
 365         EnhancedMessagingPreferences                                       => C4::Context->preference('EnhancedMessagingPreferences'),
 366         GoogleJackets                                                      => C4::Context->preference("GoogleJackets"),
 367         OpenLibraryCovers                                                  => C4::Context->preference("OpenLibraryCovers"),
 368         KohaAdminEmailAddress                                              => "" . C4::Context->preference("KohaAdminEmailAddress"),
 369         LoginBranchcode => ( C4::Context->userenv ? C4::Context->userenv->{"branch"}    : undef ),
 370         LoginFirstname  => ( C4::Context->userenv ? C4::Context->userenv->{"firstname"} : "Bel" ),
 371         LoginSurname    => C4::Context->userenv ? C4::Context->userenv->{"surname"}      : "Inconnu",
 372         emailaddress    => C4::Context->userenv ? C4::Context->userenv->{"emailaddress"} : undef,
 373         loggedinpersona => C4::Context->userenv ? C4::Context->userenv->{"persona"}      : undef,
 374         TagsEnabled     => C4::Context->preference("TagsEnabled"),
 375         hide_marc       => C4::Context->preference("hide_marc"),
 376         item_level_itypes  => C4::Context->preference('item-level_itypes'),
 377         patronimages       => C4::Context->preference("patronimages"),
 378         singleBranchMode   => C4::Context->preference("singleBranchMode"),
 379         XSLTDetailsDisplay => C4::Context->preference("XSLTDetailsDisplay"),
 380         XSLTResultsDisplay => C4::Context->preference("XSLTResultsDisplay"),
 381         using_https        => $using_https,
 382         noItemTypeImages   => C4::Context->preference("noItemTypeImages"),
 383         marcflavour        => C4::Context->preference("marcflavour"),
 384         persona            => C4::Context->preference("persona"),
 385     );
 386     if ( $in->{'type'} eq "intranet" ) {
 387         $template->param(
 388             AmazonCoverImages                                                          => C4::Context->preference("AmazonCoverImages"),
 389             AutoLocation                                                               => C4::Context->preference("AutoLocation"),
 390             "BiblioDefaultView" . C4::Context->preference("IntranetBiblioDefaultView") => 1,
 391             CalendarFirstDayOfWeek                                                     => ( C4::Context->preference("CalendarFirstDayOfWeek") eq "Sunday" ) ? 0 : 1,
 392             CircAutocompl                                                              => C4::Context->preference("CircAutocompl"),
 393             FRBRizeEditions                                                            => C4::Context->preference("FRBRizeEditions"),
 394             IndependentBranches                                                        => C4::Context->preference("IndependentBranches"),
 395             IntranetNav                                                                => C4::Context->preference("IntranetNav"),
 396             IntranetmainUserblock                                                      => C4::Context->preference("IntranetmainUserblock"),
 397             LibraryName                                                                => C4::Context->preference("LibraryName"),
 398             LoginBranchname                                                            => ( C4::Context->userenv ? C4::Context->userenv->{"branchname"} : undef ),
 399             advancedMARCEditor                                                         => C4::Context->preference("advancedMARCEditor"),
 400             canreservefromotherbranches                                                => C4::Context->preference('canreservefromotherbranches'),
 401             intranetcolorstylesheet                                                    => C4::Context->preference("intranetcolorstylesheet"),
 402             IntranetFavicon                                                            => C4::Context->preference("IntranetFavicon"),
 403             intranetreadinghistory                                                     => C4::Context->preference("intranetreadinghistory"),
 404             intranetstylesheet                                                         => C4::Context->preference("intranetstylesheet"),
 405             IntranetUserCSS                                                            => C4::Context->preference("IntranetUserCSS"),
 406             intranetuserjs                                                             => C4::Context->preference("intranetuserjs"),
 407             intranetbookbag                                                            => C4::Context->preference("intranetbookbag"),
 408             suggestion                                                                 => C4::Context->preference("suggestion"),
 409             virtualshelves                                                             => C4::Context->preference("virtualshelves"),
 410             StaffSerialIssueDisplayCount                                               => C4::Context->preference("StaffSerialIssueDisplayCount"),
 411             EasyAnalyticalRecords                                                      => C4::Context->preference('EasyAnalyticalRecords'),
 412             LocalCoverImages                                                           => C4::Context->preference('LocalCoverImages'),
 413             OPACLocalCoverImages                                                       => C4::Context->preference('OPACLocalCoverImages'),
 414             AllowMultipleCovers                                                        => C4::Context->preference('AllowMultipleCovers'),
 415             EnableBorrowerFiles                                                        => C4::Context->preference('EnableBorrowerFiles'),
 416             UseKohaPlugins                                                             => C4::Context->preference('UseKohaPlugins'),
 417             UseCourseReserves                                                          => C4::Context->preference("UseCourseReserves"),
 418         );
 419     }
 420     else {
 421         warn "template type should be OPAC, here it is=[" . $in->{'type'} . "]" unless ( $in->{'type'} eq 'opac' );
 422
 423         #TODO : replace LibraryName syspref with 'system name', and remove this html processing
 424         my $LibraryNameTitle = C4::Context->preference("LibraryName");
 425         $LibraryNameTitle =~ s/<(?:\/?)(?:br|p)\s*(?:\/?)>/ /sgi;
 426         $LibraryNameTitle =~ s/<(?:[^<>'"]|'(?:[^']*)'|"(?:[^"]*)")*>//sg;
 427
 428         # clean up the busc param in the session if the page is not opac-detail and not the "add to list" page
 429         if ( C4::Context->preference("OpacBrowseResults")
 430             && $in->{'template_name'} =~ /opac-(.+)\.(?:tt|tmpl)$/ ) {
 431             my $pagename = $1;
 432             unless ( $pagename =~ /^(?:MARC|ISBD)?detail$/
 433                 or $pagename =~ /^addbybiblionumber$/ ) {
 434                 my $sessionSearch = get_session( $sessionID || $in->{'query'}->cookie("CGISESSID") );
 435                 $sessionSearch->clear( ["busc"] ) if ( $sessionSearch->param("busc") );
 436             }
 437         }
 438
 439         # variables passed from CGI: opac_css_override and opac_search_limits.
 440         my $opac_search_limit   = $ENV{'OPAC_SEARCH_LIMIT'};
 441         my $opac_limit_override = $ENV{'OPAC_LIMIT_OVERRIDE'};
 442         my $opac_name           = '';
 443         if (
 444             ( $opac_limit_override && $opac_search_limit && $opac_search_limit =~ /branch:(\w+)/ ) ||
 445             ( $in->{'query'}->param('limit') && $in->{'query'}->param('limit') =~ /branch:(\w+)/ ) ||
 446             ( $in->{'query'}->param('multibranchlimit') && $in->{'query'}->param('multibranchlimit') =~ /multibranchlimit-(\w+)/ )
 447           ) {
 448             $opac_name = $1;    # opac_search_limit is a branch, so we use it.
 449         } elsif ( $in->{'query'}->param('multibranchlimit') ) {
 450             $opac_name = $in->{'query'}->param('multibranchlimit');
 451         } elsif ( C4::Context->preference("SearchMyLibraryFirst") && C4::Context->userenv && C4::Context->userenv->{'branch'} ) {
 452             $opac_name = C4::Context->userenv->{'branch'};
 453         }
 454
 455         # FIXME Under Plack the CGI->https method always returns 'OFF' ($using_https will be set to 0 in this case)
 456         my $opac_base_url = C4::Context->preference("OPACBaseURL");    #FIXME uses $using_https below as well
 457         if ( !$opac_base_url ) {
 458             $opac_base_url = $ENV{'SERVER_NAME'} . ( $ENV{'SERVER_PORT'} eq ( $using_https ? "443" : "80" ) ? '' : ":$ENV{'SERVER_PORT'}" );
 459         }
 460         $template->param(
 461             opaccolorstylesheet                   => C4::Context->preference("opaccolorstylesheet"),
 462             AnonSuggestions                       => "" . C4::Context->preference("AnonSuggestions"),
 463             AuthorisedValueImages                 => C4::Context->preference("AuthorisedValueImages"),
 464             BranchesLoop                          => GetBranchesLoop($opac_name),
 465             BranchCategoriesLoop                  => GetBranchCategories( 'searchdomain', 1, $opac_name ),
 466             CalendarFirstDayOfWeek                => ( C4::Context->preference("CalendarFirstDayOfWeek") eq "Sunday" ) ? 0 : 1,
 467             LibraryName                           => "" . C4::Context->preference("LibraryName"),
 468             LibraryNameTitle                      => "" . $LibraryNameTitle,
 469             LoginBranchname                       => C4::Context->userenv ? C4::Context->userenv->{"branchname"} : "",
 470             OPACAmazonCoverImages                 => C4::Context->preference("OPACAmazonCoverImages"),
 471             OPACFRBRizeEditions                   => C4::Context->preference("OPACFRBRizeEditions"),
 472             OpacHighlightedWords                  => C4::Context->preference("OpacHighlightedWords"),
 473             OPACItemHolds                         => C4::Context->preference("OPACItemHolds"),
 474             OPACShelfBrowser                      => "" . C4::Context->preference("OPACShelfBrowser"),
 475             OPACURLOpenInNewWindow                => "" . C4::Context->preference("OPACURLOpenInNewWindow"),
 476             OPACUserCSS                           => "" . C4::Context->preference("OPACUserCSS"),
 477             OPACViewOthersSuggestions             => "" . C4::Context->preference("OPACViewOthersSuggestions"),
 478             OpacAuthorities                       => C4::Context->preference("OpacAuthorities"),
 479             OPACBaseURL                           => ( $using_https ? "https://" : "http://" ) . $opac_base_url,
 480             opac_css_override                     => $ENV{'OPAC_CSS_OVERRIDE'},
 481             opac_search_limit                     => $opac_search_limit,
 482             opac_limit_override                   => $opac_limit_override,
 483             OpacBrowser                           => C4::Context->preference("OpacBrowser"),
 484             OpacCloud                             => C4::Context->preference("OpacCloud"),
 485             OpacKohaUrl                           => C4::Context->preference("OpacKohaUrl"),
 486             OpacMainUserBlock                     => "" . C4::Context->preference("OpacMainUserBlock"),
 487             OpacNav                               => "" . C4::Context->preference("OpacNav"),
 488             OpacNavRight                          => "" . C4::Context->preference("OpacNavRight"),
 489             OpacNavBottom                         => "" . C4::Context->preference("OpacNavBottom"),
 490             OpacPasswordChange                    => C4::Context->preference("OpacPasswordChange"),
 491             OPACPatronDetails                     => C4::Context->preference("OPACPatronDetails"),
 492             OPACPrivacy                           => C4::Context->preference("OPACPrivacy"),
 493             OPACFinesTab                          => C4::Context->preference("OPACFinesTab"),
 494             OpacTopissue                          => C4::Context->preference("OpacTopissue"),
 495             RequestOnOpac                         => C4::Context->preference("RequestOnOpac"),
 496             'Version'                             => C4::Context->preference('Version'),
 497             hidelostitems                         => C4::Context->preference("hidelostitems"),
 498             mylibraryfirst                        => ( C4::Context->preference("SearchMyLibraryFirst") && C4::Context->userenv ) ? C4::Context->userenv->{'branch'} : '',
 499             opaclayoutstylesheet                  => "" . C4::Context->preference("opaclayoutstylesheet"),
 500             opacbookbag                           => "" . C4::Context->preference("opacbookbag"),
 501             opaccredits                           => "" . C4::Context->preference("opaccredits"),
 502             OpacFavicon                           => C4::Context->preference("OpacFavicon"),
 503             opacheader                            => "" . C4::Context->preference("opacheader"),
 504             opaclanguagesdisplay                  => "" . C4::Context->preference("opaclanguagesdisplay"),
 505             opacreadinghistory                    => C4::Context->preference("opacreadinghistory"),
 506             opacuserjs                            => C4::Context->preference("opacuserjs"),
 507             opacuserlogin                         => "" . C4::Context->preference("opacuserlogin"),
 508             ShowReviewer                          => C4::Context->preference("ShowReviewer"),
 509             ShowReviewerPhoto                     => C4::Context->preference("ShowReviewerPhoto"),
 510             suggestion                            => "" . C4::Context->preference("suggestion"),
 511             virtualshelves                        => "" . C4::Context->preference("virtualshelves"),
 512             OPACSerialIssueDisplayCount           => C4::Context->preference("OPACSerialIssueDisplayCount"),
 513             OPACXSLTDetailsDisplay                => C4::Context->preference("OPACXSLTDetailsDisplay"),
 514             OPACXSLTResultsDisplay                => C4::Context->preference("OPACXSLTResultsDisplay"),
 515             SyndeticsClientCode                   => C4::Context->preference("SyndeticsClientCode"),
 516             SyndeticsEnabled                      => C4::Context->preference("SyndeticsEnabled"),
 517             SyndeticsCoverImages                  => C4::Context->preference("SyndeticsCoverImages"),
 518             SyndeticsTOC                          => C4::Context->preference("SyndeticsTOC"),
 519             SyndeticsSummary                      => C4::Context->preference("SyndeticsSummary"),
 520             SyndeticsEditions                     => C4::Context->preference("SyndeticsEditions"),
 521             SyndeticsExcerpt                      => C4::Context->preference("SyndeticsExcerpt"),
 522             SyndeticsReviews                      => C4::Context->preference("SyndeticsReviews"),
 523             SyndeticsAuthorNotes                  => C4::Context->preference("SyndeticsAuthorNotes"),
 524             SyndeticsAwards                       => C4::Context->preference("SyndeticsAwards"),
 525             SyndeticsSeries                       => C4::Context->preference("SyndeticsSeries"),
 526             SyndeticsCoverImageSize               => C4::Context->preference("SyndeticsCoverImageSize"),
 527             OPACLocalCoverImages                  => C4::Context->preference("OPACLocalCoverImages"),
 528             PatronSelfRegistration                => C4::Context->preference("PatronSelfRegistration"),
 529             PatronSelfRegistrationDefaultCategory => C4::Context->preference("PatronSelfRegistrationDefaultCategory"),
 530         );
 531
 532         $template->param( OpacPublic => '1' ) if ( $user || C4::Context->preference("OpacPublic") );
 533     }
 534
 535     # Check if we were asked using parameters to force a specific language
 536     if ( defined $in->{'query'}->param('language') ) {
 537
 538         # Extract the language, let C4::Languages::getlanguage choose
 539         # what to do
 540         my $language = C4::Languages::getlanguage( $in->{'query'} );
 541         my $languagecookie = C4::Templates::getlanguagecookie( $in->{'query'}, $language );
 542         if ( ref $cookie eq 'ARRAY' ) {
 543             push @{$cookie}, $languagecookie;
 544         } else {
 545             $cookie = [ $cookie, $languagecookie ];
 546         }
 547     }
 548
 549     return ( $template, $borrowernumber, $cookie, $flags );
 550 }
 551
 552 =head2 checkauth
 553
 554   ($userid, $cookie, $sessionID) = &checkauth($query, $noauth, $flagsrequired, $type);
 555
 556 Verifies that the user is authorized to run this script.  If
 557 the user is authorized, a (userid, cookie, session-id, flags)
 558 quadruple is returned.  If the user is not authorized but does
 559 not have the required privilege (see $flagsrequired below), it
 560 displays an error page and exits.  Otherwise, it displays the
 561 login page and exits.
 562
 563 Note that C<&checkauth> will return if and only if the user
 564 is authorized, so it should be called early on, before any
 565 unfinished operations (e.g., if you've opened a file, then
 566 C<&checkauth> won't close it for you).
 567
 568 C<$query> is the CGI object for the script calling C<&checkauth>.
 569
 570 The C<$noauth> argument is optional. If it is set, then no
 571 authorization is required for the script.
 572
 573 C<&checkauth> fetches user and session information from C<$query> and
 574 ensures that the user is authorized to run scripts that require
 575 authorization.
 576
 577 The C<$flagsrequired> argument specifies the required privileges
 578 the user must have if the username and password are correct.
 579 It should be specified as a reference-to-hash; keys in the hash
 580 should be the "flags" for the user, as specified in the Members
 581 intranet module. Any key specified must correspond to a "flag"
 582 in the userflags table. E.g., { circulate => 1 } would specify
 583 that the user must have the "circulate" privilege in order to
 584 proceed. To make sure that access control is correct, the
 585 C<$flagsrequired> parameter must be specified correctly.
 586
 587 Koha also has a concept of sub-permissions, also known as
 588 granular permissions.  This makes the value of each key
 589 in the C<flagsrequired> hash take on an additional
 590 meaning, i.e.,
 591
 592  1
 593
 594 The user must have access to all subfunctions of the module
 595 specified by the hash key.
 596
 597  *
 598
 599 The user must have access to at least one subfunction of the module
 600 specified by the hash key.
 601
 602  specific permission, e.g., 'export_catalog'
 603
 604 The user must have access to the specific subfunction list, which
 605 must correspond to a row in the permissions table.
 606
 607 The C<$type> argument specifies whether the template should be
 608 retrieved from the opac or intranet directory tree.  "opac" is
 609 assumed if it is not specified; however, if C<$type> is specified,
 610 "intranet" is assumed if it is not "opac".
 611
 612 If C<$query> does not have a valid session ID associated with it
 613 (i.e., the user has not logged in) or if the session has expired,
 614 C<&checkauth> presents the user with a login page (from the point of
 615 view of the original script, C<&checkauth> does not return). Once the
 616 user has authenticated, C<&checkauth> restarts the original script
 617 (this time, C<&checkauth> returns).
 618
 619 The login page is provided using a HTML::Template, which is set in the
 620 systempreferences table or at the top of this file. The variable C<$type>
 621 selects which template to use, either the opac or the intranet
 622 authentification template.
 623
 624 C<&checkauth> returns a user ID, a cookie, and a session ID. The
 625 cookie should be sent back to the browser; it verifies that the user
 626 has authenticated.
 627
 628 =cut
 629
 630 sub _version_check {
 631     my $type  = shift;
 632     my $query = shift;
 633     my $version;
 634
 635     # If Version syspref is unavailable, it means Koha is beeing installed,
 636     # and so we must redirect to OPAC maintenance page or to the WebInstaller
 637     # also, if OpacMaintenance is ON, OPAC should redirect to maintenance
 638     if ( C4::Context->preference('OpacMaintenance') && $type eq 'opac' ) {
 639         warn "OPAC Install required, redirecting to maintenance";
 640         print $query->redirect("/cgi-bin/koha/maintenance.pl");
 641         safe_exit;
 642     }
 643     unless ( $version = C4::Context->preference('Version') ) {    # assignment, not comparison
 644         if ( $type ne 'opac' ) {
 645             warn "Install required, redirecting to Installer";
 646             print $query->redirect("/cgi-bin/koha/installer/install.pl");
 647         } else {
 648             warn "OPAC Install required, redirecting to maintenance";
 649             print $query->redirect("/cgi-bin/koha/maintenance.pl");
 650         }
 651         safe_exit;
 652     }
 653
 654     # check that database and koha version are the same
 655     # there is no DB version, it's a fresh install,
 656     # go to web installer
 657     # there is a DB version, compare it to the code version
 658     my $kohaversion = C4::Context::KOHAVERSION;
 659
 660     # remove the 3 last . to have a Perl number
 661     $kohaversion =~ s/(.*\..*)\.(.*)\.(.*)/$1$2$3/;
 662     $debug and print STDERR "kohaversion : $kohaversion\n";
 663     if ( $version < $kohaversion ) {
 664         my $warning = "Database update needed, redirecting to %s. Database is $version and Koha is $kohaversion";
 665         if ( $type ne 'opac' ) {
 666             warn sprintf( $warning, 'Installer' );
 667             print $query->redirect("/cgi-bin/koha/installer/install.pl?step=3");
 668         } else {
 669             warn sprintf( "OPAC: " . $warning, 'maintenance' );
 670             print $query->redirect("/cgi-bin/koha/maintenance.pl");
 671         }
 672         safe_exit;
 673     }
 674 }
 675
 676 sub _session_log {
 677     (@_) or return 0;
 678     open my $fh, '>>', "/tmp/sessionlog" or warn "ERROR: Cannot append to /tmp/sessionlog";
 679     printf $fh join( "\n", @_ );
 680     close $fh;
 681 }
 682
 683 sub _timeout_syspref {
 684     my $timeout = C4::Context->preference('timeout') || 600;
 685
 686     # value in days, convert in seconds
 687     if ( $timeout =~ /(\d+)[dD]/ ) {
 688         $timeout = $1 * 86400;
 689     }
 690     return $timeout;
 691 }
 692
 693 sub checkauth {
 694     my $query = shift;
 695     $debug and warn "Checking Auth";
 696
 697     # $authnotrequired will be set for scripts which will run without authentication
 698     my $authnotrequired = shift;
 699     my $flagsrequired   = shift;
 700     my $type            = shift;
 701     my $persona         = shift;
 702     $type = 'opac' unless $type;
 703
 704     my $dbh     = C4::Context->dbh;
 705     my $timeout = _timeout_syspref();
 706
 707     _version_check( $type, $query );
 708
 709     # state variables
 710     my $loggedin = 0;
 711     my %info;
 712     my ( $userid, $cookie, $sessionID, $flags, $barshelves, $pubshelves );
 713     my $logout = $query->param('logout.x');
 714
 715     my $anon_search_history;
 716
 717     # This parameter is the name of the CAS server we want to authenticate against,
 718     # when using authentication against multiple CAS servers, as configured in Auth_cas_servers.yaml
 719     my $casparam = $query->param('cas');
 720     my $q_userid = $query->param('userid') // '';
 721
 722     # Basic authentication is incompatible with the use of Shibboleth,
 723     # as Shibboleth may return REMOTE_USER as a Shibboleth attribute,
 724     # and it may not be the attribute we want to use to match the koha login.
 725     #
 726     # Also, do not consider an empty REMOTE_USER.
 727     #
 728     # Finally, after those tests, we can assume (although if it would be better with
 729     # a syspref) that if we get a REMOTE_USER, that's from basic authentication,
 730     # and we can affect it to $userid.
 731     if ( !$shib and defined( $ENV{'REMOTE_USER'} ) and $ENV{'REMOTE_USER'} ne '' and $userid = $ENV{'REMOTE_USER'} ) {
 732
 733         # Using Basic Authentication, no cookies required
 734         $cookie = $query->cookie(
 735             -name     => 'CGISESSID',
 736             -value    => '',
 737             -expires  => '',
 738             -HttpOnly => 1,
 739         );
 740         $loggedin = 1;
 741     }
 742     elsif ($persona) {
 743
 744         # we dont want to set a session because we are being called by a persona callback
 745     }
 746     elsif ( $sessionID = $query->cookie("CGISESSID") )
 747     {    # assignment, not comparison
 748         my $session = get_session($sessionID);
 749         C4::Context->_new_userenv($sessionID);
 750         my ( $ip, $lasttime, $sessiontype );
 751         my $s_userid = '';
 752         if ($session) {
 753             $s_userid = $session->param('id') // '';
 754             C4::Context::set_userenv(
 755                 $session->param('number'),       $s_userid,
 756                 $session->param('cardnumber'),   $session->param('firstname'),
 757                 $session->param('surname'),      $session->param('branch'),
 758                 $session->param('branchname'),   $session->param('flags'),
 759                 $session->param('emailaddress'), $session->param('branchprinter'),
 760                 $session->param('persona'),      $session->param('shibboleth')
 761             );
 762             C4::Context::set_shelves_userenv( 'bar', $session->param('barshelves') );
 763             C4::Context::set_shelves_userenv( 'pub', $session->param('pubshelves') );
 764             C4::Context::set_shelves_userenv( 'tot', $session->param('totshelves') );
 765             $debug and printf STDERR "AUTH_SESSION: (%s)\t%s %s - %s\n", map { $session->param($_) } qw(cardnumber firstname surname branch);
 766             $ip          = $session->param('ip');
 767             $lasttime    = $session->param('lasttime');
 768             $userid      = $s_userid;
 769             $sessiontype = $session->param('sessiontype') || '';
 770         }
 771         if ( ( $query->param('koha_login_context') && ( $q_userid ne $s_userid ) )
 772             || ( $cas && $query->param('ticket') && !C4::Context->userenv->{'id'} ) || ( $shib && $shib_login && !$logout ) ) {
 773
 774             #if a user enters an id ne to the id in the current session, we need to log them in...
 775             #first we need to clear the anonymous session...
 776             $debug and warn "query id = $q_userid but session id = $s_userid";
 777             $anon_search_history = $session->param('search_history');
 778             $session->delete();
 779             $session->flush;
 780             C4::Context->_unset_userenv($sessionID);
 781             $sessionID = undef;
 782             $userid    = undef;
 783         }
 784         elsif ($logout) {
 785
 786             # voluntary logout the user
 787             # check wether the user was using their shibboleth session or a local one
 788             my $shibSuccess = C4::Context->userenv->{'shibboleth'};
 789             $session->delete();
 790             $session->flush;
 791             C4::Context->_unset_userenv($sessionID);
 792
 793             #_session_log(sprintf "%20s from %16s logged out at %30s (manually).\n", $userid,$ip,(strftime "%c",localtime));
 794             $sessionID = undef;
 795             $userid    = undef;
 796
 797             if ( $cas and $caslogout ) {
 798                 logout_cas($query);
 799             }
 800
 801             # If we are in a shibboleth session (shibboleth is enabled, a shibboleth match attribute is set and matches koha matchpoint)
 802             if ( $shib and $shib_login and $shibSuccess and $type eq 'opac' ) {
 803
 804                 # (Note: $type eq 'opac' condition should be removed when shibboleth authentication for intranet will be implemented)
 805                 logout_shib($query);
 806             }
 807         }
 808         elsif ( !$lasttime || ( $lasttime < time() - $timeout ) ) {
 809
 810             # timed logout
 811             $info{'timed_out'} = 1;
 812             if ($session) {
 813                 $session->delete();
 814                 $session->flush;
 815             }
 816             C4::Context->_unset_userenv($sessionID);
 817
 818             #_session_log(sprintf "%20s from %16s logged out at %30s (inactivity).\n", $userid,$ip,(strftime "%c",localtime));
 819             $userid    = undef;
 820             $sessionID = undef;
 821         }
 822         elsif ( C4::Context->preference('SessionRestrictionByIP') && $ip ne $ENV{'REMOTE_ADDR'} ) {
 823
 824             # Different ip than originally logged in from
 825             $info{'oldip'}        = $ip;
 826             $info{'newip'}        = $ENV{'REMOTE_ADDR'};
 827             $info{'different_ip'} = 1;
 828             $session->delete();
 829             $session->flush;
 830             C4::Context->_unset_userenv($sessionID);
 831
 832             #_session_log(sprintf "%20s from %16s logged out at %30s (ip changed to %16s).\n", $userid,$ip,(strftime "%c",localtime), $info{'newip'});
 833             $sessionID = undef;
 834             $userid    = undef;
 835         }
 836         else {
 837             $cookie = $query->cookie(
 838                 -name     => 'CGISESSID',
 839                 -value    => $session->id,
 840                 -HttpOnly => 1
 841             );
 842             $session->param( 'lasttime', time() );
 843             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...
 844                 $flags = haspermission( $userid, $flagsrequired );
 845                 if ($flags) {
 846                     $loggedin = 1;
 847                 } else {
 848                     $info{'nopermission'} = 1;
 849                 }
 850             }
 851         }
 852     }
 853     unless ( $userid || $sessionID ) {
 854
 855         #we initiate a session prior to checking for a username to allow for anonymous sessions...
 856         my $session = get_session("") or die "Auth ERROR: Cannot get_session()";
 857
 858         # Save anonymous search history in new session so it can be retrieved
 859         # by get_template_and_user to store it in user's search history after
 860         # a successful login.
 861         if ($anon_search_history) {
 862             $session->param( 'search_history', $anon_search_history );
 863         }
 864
 865         my $sessionID = $session->id;
 866         C4::Context->_new_userenv($sessionID);
 867         $cookie = $query->cookie(
 868             -name     => 'CGISESSID',
 869             -value    => $session->id,
 870             -HttpOnly => 1
 871         );
 872         $userid = $q_userid;
 873         my $pki_field = C4::Context->preference('AllowPKIAuth');
 874         if ( !defined($pki_field) ) {
 875             print STDERR "ERROR: Missing system preference AllowPKIAuth.\n";
 876             $pki_field = 'None';
 877         }
 878         if ( ( $cas && $query->param('ticket') )
 879             || $userid
 880             || ( $shib && $shib_login )
 881             || $pki_field ne 'None'
 882             || $persona )
 883         {
 884             my $password    = $query->param('password');
 885             my $shibSuccess = 0;
 886
 887             my ( $return, $cardnumber );
 888
 889             # If shib is enabled and we have a shib login, does the login match a valid koha user
 890             if ( $shib && $shib_login && $type eq 'opac' ) {
 891                 my $retuserid;
 892
 893                 # Do not pass password here, else shib will not be checked in checkpw.
 894                 ( $return, $cardnumber, $retuserid ) = checkpw( $dbh, $userid, undef, $query );
 895                 $userid      = $retuserid;
 896                 $shibSuccess = $return;
 897                 $info{'invalidShibLogin'} = 1 unless ($return);
 898             }
 899
 900             # If shib login and match were successfull, skip further login methods
 901             unless ($shibSuccess) {
 902                 if ( $cas && $query->param('ticket') ) {
 903                     my $retuserid;
 904                     ( $return, $cardnumber, $retuserid ) =
 905                       checkpw( $dbh, $userid, $password, $query );
 906                     $userid = $retuserid;
 907                     $info{'invalidCasLogin'} = 1 unless ($return);
 908                 }
 909
 910                 elsif ($persona) {
 911                     my $value = $persona;
 912
 913                     # If we're looking up the email, there's a chance that the person
 914                     # doesn't have a userid. So if there is none, we pass along the
 915                     # borrower number, and the bits of code that need to know the user
 916                     # ID will have to be smart enough to handle that.
 917                     require C4::Members;
 918                     my @users_info = C4::Members::GetBorrowersWithEmail($value);
 919                     if (@users_info) {
 920
 921                         # First the userid, then the borrowernum
 922                         $value = $users_info[0][1] || $users_info[0][0];
 923                     }
 924                     else {
 925                         undef $value;
 926                     }
 927                     $return = $value ? 1 : 0;
 928                     $userid = $value;
 929                 }
 930
 931                 elsif (
 932                     ( $pki_field eq 'Common Name' && $ENV{'SSL_CLIENT_S_DN_CN'} )
 933                     || ( $pki_field eq 'emailAddress'
 934                         && $ENV{'SSL_CLIENT_S_DN_Email'} )
 935                   )
 936                 {
 937                     my $value;
 938                     if ( $pki_field eq 'Common Name' ) {
 939                         $value = $ENV{'SSL_CLIENT_S_DN_CN'};
 940                     }
 941                     elsif ( $pki_field eq 'emailAddress' ) {
 942                         $value = $ENV{'SSL_CLIENT_S_DN_Email'};
 943
 944                         # If we're looking up the email, there's a chance that the person
 945                         # doesn't have a userid. So if there is none, we pass along the
 946                         # borrower number, and the bits of code that need to know the user
 947                         # ID will have to be smart enough to handle that.
 948                         require C4::Members;
 949                         my @users_info = C4::Members::GetBorrowersWithEmail($value);
 950                         if (@users_info) {
 951
 952                             # First the userid, then the borrowernum
 953                             $value = $users_info[0][1] || $users_info[0][0];
 954                         } else {
 955                             undef $value;
 956                         }
 957                     }
 958
 959                     $return = $value ? 1 : 0;
 960                     $userid = $value;
 961
 962                 }
 963                 else {
 964                     my $retuserid;
 965                     ( $return, $cardnumber, $retuserid ) =
 966                       checkpw( $dbh, $userid, $password, $query );
 967                     $userid = $retuserid if ($retuserid);
 968                     $info{'invalid_username_or_password'} = 1 unless ($return);
 969                 }
 970             }
 971
 972             # $return: 1 = valid user, 2 = superlibrarian
 973             if ($return) {
 974
 975                 #_session_log(sprintf "%20s from %16s logged in  at %30s.\n", $userid,$ENV{'REMOTE_ADDR'},(strftime '%c', localtime));
 976                 if ( $flags = haspermission( $userid, $flagsrequired ) ) {
 977                     $loggedin = 1;
 978                 }
 979                 else {
 980                     $info{'nopermission'} = 1;
 981                     C4::Context->_unset_userenv($sessionID);
 982                 }
 983                 my ( $borrowernumber, $firstname, $surname, $userflags,
 984                     $branchcode, $branchname, $branchprinter, $emailaddress );
 985
 986                 if ( $return == 1 ) {
 987                     my $select = "
 988                     SELECT borrowernumber, firstname, surname, flags, borrowers.branchcode,
 989                     branches.branchname    as branchname,
 990                     branches.branchprinter as branchprinter,
 991                     email
 992                     FROM borrowers
 993                     LEFT JOIN branches on borrowers.branchcode=branches.branchcode
 994                     ";
 995                     my $sth = $dbh->prepare("$select where userid=?");
 996                     $sth->execute($userid);
 997                     unless ( $sth->rows ) {
 998                         $debug and print STDERR "AUTH_1: no rows for userid='$userid'\n";
 999                         $sth = $dbh->prepare("$select where cardnumber=?");
1000                         $sth->execute($cardnumber);
1001
1002                         unless ( $sth->rows ) {
1003                             $debug and print STDERR "AUTH_2a: no rows for cardnumber='$cardnumber'\n";
1004                             $sth->execute($userid);
1005                             unless ( $sth->rows ) {
1006                                 $debug and print STDERR "AUTH_2b: no rows for userid='$userid' AS cardnumber\n";
1007                             }
1008                         }
1009                     }
1010                     if ( $sth->rows ) {
1011                         ( $borrowernumber, $firstname, $surname, $userflags,
1012                             $branchcode, $branchname, $branchprinter, $emailaddress ) = $sth->fetchrow;
1013                         $debug and print STDERR "AUTH_3 results: " .
1014                           "$cardnumber,$borrowernumber,$userid,$firstname,$surname,$userflags,$branchcode,$emailaddress\n";
1015                     } else {
1016                         print STDERR "AUTH_3: no results for userid='$userid', cardnumber='$cardnumber'.\n";
1017                     }
1018
1019                     # launch a sequence to check if we have a ip for the branch, i
1020                     # if we have one we replace the branchcode of the userenv by the branch bound in the ip.
1021
1022                     my $ip = $ENV{'REMOTE_ADDR'};
1023
1024                     # if they specify at login, use that
1025                     if ( $query->param('branch') ) {
1026                         $branchcode = $query->param('branch');
1027                         $branchname = GetBranchName($branchcode);
1028                     }
1029                     my $branches = GetBranches();
1030                     if ( C4::Context->boolean_preference('IndependentBranches') && C4::Context->boolean_preference('Autolocation') ) {
1031
1032                         # we have to check they are coming from the right ip range
1033                         my $domain = $branches->{$branchcode}->{'branchip'};
1034                         if ( $ip !~ /^$domain/ ) {
1035                             $loggedin = 0;
1036                             $info{'wrongip'} = 1;
1037                         }
1038                     }
1039
1040                     my @branchesloop;
1041                     foreach my $br ( keys %$branches ) {
1042
1043                         #     now we work with the treatment of ip
1044                         my $domain = $branches->{$br}->{'branchip'};
1045                         if ( $domain && $ip =~ /^$domain/ ) {
1046                             $branchcode = $branches->{$br}->{'branchcode'};
1047
1048                             # new op dev : add the branchprinter and branchname in the cookie
1049                             $branchprinter = $branches->{$br}->{'branchprinter'};
1050                             $branchname    = $branches->{$br}->{'branchname'};
1051                         }
1052                     }
1053                     $session->param( 'number',       $borrowernumber );
1054                     $session->param( 'id',           $userid );
1055                     $session->param( 'cardnumber',   $cardnumber );
1056                     $session->param( 'firstname',    $firstname );
1057                     $session->param( 'surname',      $surname );
1058                     $session->param( 'branch',       $branchcode );
1059                     $session->param( 'branchname',   $branchname );
1060                     $session->param( 'flags',        $userflags );
1061                     $session->param( 'emailaddress', $emailaddress );
1062                     $session->param( 'ip',           $session->remote_addr() );
1063                     $session->param( 'lasttime',     time() );
1064                     $session->param( 'shibboleth',   $shibSuccess );
1065                     $debug and printf STDERR "AUTH_4: (%s)\t%s %s - %s\n", map { $session->param($_) } qw(cardnumber firstname surname branch);
1066                 }
1067                 elsif ( $return == 2 ) {
1068
1069                     #We suppose the user is the superlibrarian
1070                     $borrowernumber = 0;
1071                     $session->param( 'number',       0 );
1072                     $session->param( 'id',           C4::Context->config('user') );
1073                     $session->param( 'cardnumber',   C4::Context->config('user') );
1074                     $session->param( 'firstname',    C4::Context->config('user') );
1075                     $session->param( 'surname',      C4::Context->config('user') );
1076                     $session->param( 'branch',       'NO_LIBRARY_SET' );
1077                     $session->param( 'branchname',   'NO_LIBRARY_SET' );
1078                     $session->param( 'flags',        1 );
1079                     $session->param( 'emailaddress', C4::Context->preference('KohaAdminEmailAddress') );
1080                     $session->param( 'ip',           $session->remote_addr() );
1081                     $session->param( 'lasttime',     time() );
1082                 }
1083                 if ($persona) {
1084                     $session->param( 'persona', 1 );
1085                 }
1086                 C4::Context::set_userenv(
1087                     $session->param('number'),       $session->param('id'),
1088                     $session->param('cardnumber'),   $session->param('firstname'),
1089                     $session->param('surname'),      $session->param('branch'),
1090                     $session->param('branchname'),   $session->param('flags'),
1091                     $session->param('emailaddress'), $session->param('branchprinter'),
1092                     $session->param('persona'),      $session->param('shibboleth')
1093                 );
1094
1095             }
1096             # $return: 0 = invalid user
1097             # reset to anonymous session
1098             else {
1099                 $debug and warn "Login failed, resetting anonymous session...";
1100                 if ($userid) {
1101                     $info{'invalid_username_or_password'} = 1;
1102                     C4::Context->_unset_userenv($sessionID);
1103                 }
1104                 $session->param( 'lasttime', time() );
1105                 $session->param( 'ip',       $session->remote_addr() );
1106                 $session->param( 'sessiontype', 'anon' );
1107             }
1108         }    # END if ( $userid    = $query->param('userid') )
1109         elsif ( $type eq "opac" ) {
1110
1111             # if we are here this is an anonymous session; add public lists to it and a few other items...
1112             # anonymous sessions are created only for the OPAC
1113             $debug and warn "Initiating an anonymous session...";
1114
1115             # setting a couple of other session vars...
1116             $session->param( 'ip',          $session->remote_addr() );
1117             $session->param( 'lasttime',    time() );
1118             $session->param( 'sessiontype', 'anon' );
1119         }
1120     }    # END unless ($userid)
1121
1122     # finished authentification, now respond
1123     if ( $loggedin || $authnotrequired )
1124     {
1125         # successful login
1126         unless ($cookie) {
1127             $cookie = $query->cookie(
1128                 -name     => 'CGISESSID',
1129                 -value    => '',
1130                 -HttpOnly => 1
1131             );
1132         }
1133         return ( $userid, $cookie, $sessionID, $flags );
1134     }
1135
1136     #
1137     #
1138     # AUTH rejected, show the login/password template, after checking the DB.
1139     #
1140     #
1141
1142     # get the inputs from the incoming query
1143     my @inputs = ();
1144     foreach my $name ( param $query) {
1145         (next) if ( $name eq 'userid' || $name eq 'password' || $name eq 'ticket' );
1146         my $value = $query->param($name);
1147         push @inputs, { name => $name, value => $value };
1148     }
1149
1150     my $LibraryNameTitle = C4::Context->preference("LibraryName");
1151     $LibraryNameTitle =~ s/<(?:\/?)(?:br|p)\s*(?:\/?)>/ /sgi;
1152     $LibraryNameTitle =~ s/<(?:[^<>'"]|'(?:[^']*)'|"(?:[^"]*)")*>//sg;
1153
1154     my $template_name = ( $type eq 'opac' ) ? 'opac-auth.tt' : 'auth.tt';
1155     my $template = C4::Templates::gettemplate( $template_name, $type, $query );
1156     $template->param(
1157         branchloop                            => GetBranchesLoop(),
1158         opaccolorstylesheet                   => C4::Context->preference("opaccolorstylesheet"),
1159         opaclayoutstylesheet                  => C4::Context->preference("opaclayoutstylesheet"),
1160         login                                 => 1,
1161         INPUTS                                => \@inputs,
1162         casAuthentication                     => C4::Context->preference("casAuthentication"),
1163         shibbolethAuthentication              => $shib,
1164         SessionRestrictionByIP                => C4::Context->preference("SessionRestrictionByIP"),
1165         suggestion                            => C4::Context->preference("suggestion"),
1166         virtualshelves                        => C4::Context->preference("virtualshelves"),
1167         LibraryName                           => "" . C4::Context->preference("LibraryName"),
1168         LibraryNameTitle                      => "" . $LibraryNameTitle,
1169         opacuserlogin                         => C4::Context->preference("opacuserlogin"),
1170         OpacNav                               => C4::Context->preference("OpacNav"),
1171         OpacNavRight                          => C4::Context->preference("OpacNavRight"),
1172         OpacNavBottom                         => C4::Context->preference("OpacNavBottom"),
1173         opaccredits                           => C4::Context->preference("opaccredits"),
1174         OpacFavicon                           => C4::Context->preference("OpacFavicon"),
1175         opacreadinghistory                    => C4::Context->preference("opacreadinghistory"),
1176         opaclanguagesdisplay                  => C4::Context->preference("opaclanguagesdisplay"),
1177         opacuserjs                            => C4::Context->preference("opacuserjs"),
1178         opacbookbag                           => "" . C4::Context->preference("opacbookbag"),
1179         OpacCloud                             => C4::Context->preference("OpacCloud"),
1180         OpacTopissue                          => C4::Context->preference("OpacTopissue"),
1181         OpacAuthorities                       => C4::Context->preference("OpacAuthorities"),
1182         OpacBrowser                           => C4::Context->preference("OpacBrowser"),
1183         opacheader                            => C4::Context->preference("opacheader"),
1184         TagsEnabled                           => C4::Context->preference("TagsEnabled"),
1185         OPACUserCSS                           => C4::Context->preference("OPACUserCSS"),
1186         intranetcolorstylesheet               => C4::Context->preference("intranetcolorstylesheet"),
1187         intranetstylesheet                    => C4::Context->preference("intranetstylesheet"),
1188         intranetbookbag                       => C4::Context->preference("intranetbookbag"),
1189         IntranetNav                           => C4::Context->preference("IntranetNav"),
1190         IntranetFavicon                       => C4::Context->preference("IntranetFavicon"),
1191         intranetuserjs                        => C4::Context->preference("intranetuserjs"),
1192         IndependentBranches                   => C4::Context->preference("IndependentBranches"),
1193         AutoLocation                          => C4::Context->preference("AutoLocation"),
1194         wrongip                               => $info{'wrongip'},
1195         PatronSelfRegistration                => C4::Context->preference("PatronSelfRegistration"),
1196         PatronSelfRegistrationDefaultCategory => C4::Context->preference("PatronSelfRegistrationDefaultCategory"),
1197         persona                               => C4::Context->preference("Persona"),
1198         opac_css_override                     => $ENV{'OPAC_CSS_OVERRIDE'},
1199     );
1200
1201     $template->param( OpacPublic => C4::Context->preference("OpacPublic") );
1202     $template->param( loginprompt => 1 ) unless $info{'nopermission'};
1203
1204     if ( $type eq 'opac' ) {
1205         my ( $total, $pubshelves ) = C4::VirtualShelves::GetSomeShelfNames( undef, 'MASTHEAD' );
1206         $template->param(
1207             pubshelves     => $total->{pubtotal},
1208             pubshelvesloop => $pubshelves,
1209         );
1210     }
1211
1212     if ($cas) {
1213
1214         # Is authentication against multiple CAS servers enabled?
1215         if ( C4::Auth_with_cas::multipleAuth && !$casparam ) {
1216             my $casservers = C4::Auth_with_cas::getMultipleAuth();
1217             my @tmplservers;
1218             foreach my $key ( keys %$casservers ) {
1219                 push @tmplservers, { name => $key, value => login_cas_url( $query, $key ) . "?cas=$key" };
1220             }
1221             $template->param(
1222                 casServersLoop => \@tmplservers
1223             );
1224         } else {
1225             $template->param(
1226                 casServerUrl => login_cas_url($query),
1227             );
1228         }
1229
1230         $template->param(
1231             invalidCasLogin => $info{'invalidCasLogin'}
1232         );
1233     }
1234
1235     if ($shib) {
1236         $template->param(
1237             shibbolethAuthentication => $shib,
1238             shibbolethLoginUrl       => login_shib_url($query),
1239         );
1240     }
1241
1242     my $self_url = $query->url( -absolute => 1 );
1243     $template->param(
1244         url         => $self_url,
1245         LibraryName => C4::Context->preference("LibraryName"),
1246     );
1247     $template->param(%info);
1248
1249     #    $cookie = $query->cookie(CGISESSID => $session->id
1250     #   );
1251     print $query->header(
1252         -type    => 'text/html',
1253         -charset => 'utf-8',
1254         -cookie  => $cookie
1255       ),
1256       $template->output;
1257     safe_exit;
1258 }
1259
1260 =head2 check_api_auth
1261
1262   ($status, $cookie, $sessionId) = check_api_auth($query, $userflags);
1263
1264 Given a CGI query containing the parameters 'userid' and 'password' and/or a session
1265 cookie, determine if the user has the privileges specified by C<$userflags>.
1266
1267 C<check_api_auth> is is meant for authenticating users of web services, and
1268 consequently will always return and will not attempt to redirect the user
1269 agent.
1270
1271 If a valid session cookie is already present, check_api_auth will return a status
1272 of "ok", the cookie, and the Koha session ID.
1273
1274 If no session cookie is present, check_api_auth will check the 'userid' and 'password
1275 parameters and create a session cookie and Koha session if the supplied credentials
1276 are OK.
1277
1278 Possible return values in C<$status> are:
1279
1280 =over
1281
1282 =item "ok" -- user authenticated; C<$cookie> and C<$sessionid> have valid values.
1283
1284 =item "failed" -- credentials are not correct; C<$cookie> and C<$sessionid> are undef
1285
1286 =item "maintenance" -- DB is in maintenance mode; no login possible at the moment
1287
1288 =item "expired -- session cookie has expired; API user should resubmit userid and password
1289
1290 =back
1291
1292 =cut
1293
1294 sub check_api_auth {
1295     my $query         = shift;
1296     my $flagsrequired = shift;
1297
1298     my $dbh     = C4::Context->dbh;
1299     my $timeout = _timeout_syspref();
1300
1301     unless ( C4::Context->preference('Version') ) {
1302
1303         # database has not been installed yet
1304         return ( "maintenance", undef, undef );
1305     }
1306     my $kohaversion = C4::Context::KOHAVERSION;
1307     $kohaversion =~ s/(.*\..*)\.(.*)\.(.*)/$1$2$3/;
1308     if ( C4::Context->preference('Version') < $kohaversion ) {
1309
1310         # database in need of version update; assume that
1311         # no API should be called while databsae is in
1312         # this condition.
1313         return ( "maintenance", undef, undef );
1314     }
1315
1316     # FIXME -- most of what follows is a copy-and-paste
1317     # of code from checkauth.  There is an obvious need
1318     # for refactoring to separate the various parts of
1319     # the authentication code, but as of 2007-11-19 this
1320     # is deferred so as to not introduce bugs into the
1321     # regular authentication code for Koha 3.0.
1322
1323     # see if we have a valid session cookie already
1324     # however, if a userid parameter is present (i.e., from
1325     # a form submission, assume that any current cookie
1326     # is to be ignored
1327     my $sessionID = undef;
1328     unless ( $query->param('userid') ) {
1329         $sessionID = $query->cookie("CGISESSID");
1330     }
1331     if ( $sessionID && not( $cas && $query->param('PT') ) ) {
1332         my $session = get_session($sessionID);
1333         C4::Context->_new_userenv($sessionID);
1334         if ($session) {
1335             C4::Context::set_userenv(
1336                 $session->param('number'),       $session->param('id'),
1337                 $session->param('cardnumber'),   $session->param('firstname'),
1338                 $session->param('surname'),      $session->param('branch'),
1339                 $session->param('branchname'),   $session->param('flags'),
1340                 $session->param('emailaddress'), $session->param('branchprinter')
1341             );
1342
1343             my $ip       = $session->param('ip');
1344             my $lasttime = $session->param('lasttime');
1345             my $userid   = $session->param('id');
1346             if ( $lasttime < time() - $timeout ) {
1347
1348                 # time out
1349                 $session->delete();
1350                 $session->flush;
1351                 C4::Context->_unset_userenv($sessionID);
1352                 $userid    = undef;
1353                 $sessionID = undef;
1354                 return ( "expired", undef, undef );
1355             } elsif ( C4::Context->preference('SessionRestrictionByIP') && $ip ne $ENV{'REMOTE_ADDR'} ) {
1356
1357                 # IP address changed
1358                 $session->delete();
1359                 $session->flush;
1360                 C4::Context->_unset_userenv($sessionID);
1361                 $userid    = undef;
1362                 $sessionID = undef;
1363                 return ( "expired", undef, undef );
1364             } else {
1365                 my $cookie = $query->cookie(
1366                     -name     => 'CGISESSID',
1367                     -value    => $session->id,
1368                     -HttpOnly => 1,
1369                 );
1370                 $session->param( 'lasttime', time() );
1371                 my $flags = haspermission( $userid, $flagsrequired );
1372                 if ($flags) {
1373                     return ( "ok", $cookie, $sessionID );
1374                 } else {
1375                     $session->delete();
1376                     $session->flush;
1377                     C4::Context->_unset_userenv($sessionID);
1378                     $userid    = undef;
1379                     $sessionID = undef;
1380                     return ( "failed", undef, undef );
1381                 }
1382             }
1383         } else {
1384             return ( "expired", undef, undef );
1385         }
1386     } else {
1387
1388         # new login
1389         my $userid   = $query->param('userid');
1390         my $password = $query->param('password');
1391         my ( $return, $cardnumber );
1392
1393         # Proxy CAS auth
1394         if ( $cas && $query->param('PT') ) {
1395             my $retuserid;
1396             $debug and print STDERR "## check_api_auth - checking CAS\n";
1397
1398             # In case of a CAS authentication, we use the ticket instead of the password
1399             my $PT = $query->param('PT');
1400             ( $return, $cardnumber, $userid ) = check_api_auth_cas( $dbh, $PT, $query );    # EXTERNAL AUTH
1401         } else {
1402
1403             # User / password auth
1404             unless ( $userid and $password ) {
1405
1406                 # caller did something wrong, fail the authenticateion
1407                 return ( "failed", undef, undef );
1408             }
1409             ( $return, $cardnumber ) = checkpw( $dbh, $userid, $password, $query );
1410         }
1411
1412         if ( $return and haspermission( $userid, $flagsrequired ) ) {
1413             my $session = get_session("");
1414             return ( "failed", undef, undef ) unless $session;
1415
1416             my $sessionID = $session->id;
1417             C4::Context->_new_userenv($sessionID);
1418             my $cookie = $query->cookie(
1419                 -name     => 'CGISESSID',
1420                 -value    => $sessionID,
1421                 -HttpOnly => 1,
1422             );
1423             if ( $return == 1 ) {
1424                 my (
1425                     $borrowernumber, $firstname,  $surname,
1426                     $userflags,      $branchcode, $branchname,
1427                     $branchprinter,  $emailaddress
1428                 );
1429                 my $sth =
1430                   $dbh->prepare(
1431 "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=?"
1432                   );
1433                 $sth->execute($userid);
1434                 (
1435                     $borrowernumber, $firstname,  $surname,
1436                     $userflags,      $branchcode, $branchname,
1437                     $branchprinter,  $emailaddress
1438                 ) = $sth->fetchrow if ( $sth->rows );
1439
1440                 unless ( $sth->rows ) {
1441                     my $sth = $dbh->prepare(
1442 "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=?"
1443                     );
1444                     $sth->execute($cardnumber);
1445                     (
1446                         $borrowernumber, $firstname,  $surname,
1447                         $userflags,      $branchcode, $branchname,
1448                         $branchprinter,  $emailaddress
1449                     ) = $sth->fetchrow if ( $sth->rows );
1450
1451                     unless ( $sth->rows ) {
1452                         $sth->execute($userid);
1453                         (
1454                             $borrowernumber, $firstname,  $surname,       $userflags,
1455                             $branchcode,     $branchname, $branchprinter, $emailaddress
1456                         ) = $sth->fetchrow if ( $sth->rows );
1457                     }
1458                 }
1459
1460                 my $ip = $ENV{'REMOTE_ADDR'};
1461
1462                 # if they specify at login, use that
1463                 if ( $query->param('branch') ) {
1464                     $branchcode = $query->param('branch');
1465                     $branchname = GetBranchName($branchcode);
1466                 }
1467                 my $branches = GetBranches();
1468                 my @branchesloop;
1469                 foreach my $br ( keys %$branches ) {
1470
1471                     #     now we work with the treatment of ip
1472                     my $domain = $branches->{$br}->{'branchip'};
1473                     if ( $domain && $ip =~ /^$domain/ ) {
1474                         $branchcode = $branches->{$br}->{'branchcode'};
1475
1476                         # new op dev : add the branchprinter and branchname in the cookie
1477                         $branchprinter = $branches->{$br}->{'branchprinter'};
1478                         $branchname    = $branches->{$br}->{'branchname'};
1479                     }
1480                 }
1481                 $session->param( 'number',       $borrowernumber );
1482                 $session->param( 'id',           $userid );
1483                 $session->param( 'cardnumber',   $cardnumber );
1484                 $session->param( 'firstname',    $firstname );
1485                 $session->param( 'surname',      $surname );
1486                 $session->param( 'branch',       $branchcode );
1487                 $session->param( 'branchname',   $branchname );
1488                 $session->param( 'flags',        $userflags );
1489                 $session->param( 'emailaddress', $emailaddress );
1490                 $session->param( 'ip',           $session->remote_addr() );
1491                 $session->param( 'lasttime',     time() );
1492             } elsif ( $return == 2 ) {
1493
1494                 #We suppose the user is the superlibrarian
1495                 $session->param( 'number',       0 );
1496                 $session->param( 'id',           C4::Context->config('user') );
1497                 $session->param( 'cardnumber',   C4::Context->config('user') );
1498                 $session->param( 'firstname',    C4::Context->config('user') );
1499                 $session->param( 'surname',      C4::Context->config('user') );
1500                 $session->param( 'branch',       'NO_LIBRARY_SET' );
1501                 $session->param( 'branchname',   'NO_LIBRARY_SET' );
1502                 $session->param( 'flags',        1 );
1503                 $session->param( 'emailaddress', C4::Context->preference('KohaAdminEmailAddress') );
1504                 $session->param( 'ip',           $session->remote_addr() );
1505                 $session->param( 'lasttime',     time() );
1506             }
1507             C4::Context::set_userenv(
1508                 $session->param('number'),       $session->param('id'),
1509                 $session->param('cardnumber'),   $session->param('firstname'),
1510                 $session->param('surname'),      $session->param('branch'),
1511                 $session->param('branchname'),   $session->param('flags'),
1512                 $session->param('emailaddress'), $session->param('branchprinter')
1513             );
1514             return ( "ok", $cookie, $sessionID );
1515         } else {
1516             return ( "failed", undef, undef );
1517         }
1518     }
1519 }
1520
1521 =head2 check_cookie_auth
1522
1523   ($status, $sessionId) = check_api_auth($cookie, $userflags);
1524
1525 Given a CGISESSID cookie set during a previous login to Koha, determine
1526 if the user has the privileges specified by C<$userflags>.
1527
1528 C<check_cookie_auth> is meant for authenticating special services
1529 such as tools/upload-file.pl that are invoked by other pages that
1530 have been authenticated in the usual way.
1531
1532 Possible return values in C<$status> are:
1533
1534 =over
1535
1536 =item "ok" -- user authenticated; C<$sessionID> have valid values.
1537
1538 =item "failed" -- credentials are not correct; C<$sessionid> are undef
1539
1540 =item "maintenance" -- DB is in maintenance mode; no login possible at the moment
1541
1542 =item "expired -- session cookie has expired; API user should resubmit userid and password
1543
1544 =back
1545
1546 =cut
1547
1548 sub check_cookie_auth {
1549     my $cookie        = shift;
1550     my $flagsrequired = shift;
1551
1552     my $dbh     = C4::Context->dbh;
1553     my $timeout = _timeout_syspref();
1554
1555     unless ( C4::Context->preference('Version') ) {
1556
1557         # database has not been installed yet
1558         return ( "maintenance", undef );
1559     }
1560     my $kohaversion = C4::Context::KOHAVERSION;
1561     $kohaversion =~ s/(.*\..*)\.(.*)\.(.*)/$1$2$3/;
1562     if ( C4::Context->preference('Version') < $kohaversion ) {
1563
1564         # database in need of version update; assume that
1565         # no API should be called while databsae is in
1566         # this condition.
1567         return ( "maintenance", undef );
1568     }
1569
1570     # FIXME -- most of what follows is a copy-and-paste
1571     # of code from checkauth.  There is an obvious need
1572     # for refactoring to separate the various parts of
1573     # the authentication code, but as of 2007-11-23 this
1574     # is deferred so as to not introduce bugs into the
1575     # regular authentication code for Koha 3.0.
1576
1577     # see if we have a valid session cookie already
1578     # however, if a userid parameter is present (i.e., from
1579     # a form submission, assume that any current cookie
1580     # is to be ignored
1581     unless ( defined $cookie and $cookie ) {
1582         return ( "failed", undef );
1583     }
1584     my $sessionID = $cookie;
1585     my $session   = get_session($sessionID);
1586     C4::Context->_new_userenv($sessionID);
1587     if ($session) {
1588         C4::Context::set_userenv(
1589             $session->param('number'),       $session->param('id'),
1590             $session->param('cardnumber'),   $session->param('firstname'),
1591             $session->param('surname'),      $session->param('branch'),
1592             $session->param('branchname'),   $session->param('flags'),
1593             $session->param('emailaddress'), $session->param('branchprinter')
1594         );
1595
1596         my $ip       = $session->param('ip');
1597         my $lasttime = $session->param('lasttime');
1598         my $userid   = $session->param('id');
1599         if ( $lasttime < time() - $timeout ) {
1600
1601             # time out
1602             $session->delete();
1603             $session->flush;
1604             C4::Context->_unset_userenv($sessionID);
1605             $userid    = undef;
1606             $sessionID = undef;
1607             return ("expired", undef);
1608         } elsif ( C4::Context->preference('SessionRestrictionByIP') && $ip ne $ENV{'REMOTE_ADDR'} ) {
1609
1610             # IP address changed
1611             $session->delete();
1612             $session->flush;
1613             C4::Context->_unset_userenv($sessionID);
1614             $userid    = undef;
1615             $sessionID = undef;
1616             return ( "expired", undef );
1617         } else {
1618             $session->param( 'lasttime', time() );
1619             my $flags = haspermission( $userid, $flagsrequired );
1620             if ($flags) {
1621                 return ( "ok", $sessionID );
1622             } else {
1623                 $session->delete();
1624                 $session->flush;
1625                 C4::Context->_unset_userenv($sessionID);
1626                 $userid    = undef;
1627                 $sessionID = undef;
1628                 return ( "failed", undef );
1629             }
1630         }
1631     } else {
1632         return ( "expired", undef );
1633     }
1634 }
1635
1636 =head2 get_session
1637
1638   use CGI::Session;
1639   my $session = get_session($sessionID);
1640
1641 Given a session ID, retrieve the CGI::Session object used to store
1642 the session's state.  The session object can be used to store
1643 data that needs to be accessed by different scripts during a
1644 user's session.
1645
1646 If the C<$sessionID> parameter is an empty string, a new session
1647 will be created.
1648
1649 =cut
1650
1651 sub get_session {
1652     my $sessionID      = shift;
1653     my $storage_method = C4::Context->preference('SessionStorage');
1654     my $dbh            = C4::Context->dbh;
1655     my $session;
1656     if ( $storage_method eq 'mysql' ) {
1657         $session = new CGI::Session( "driver:MySQL;serializer:yaml;id:md5", $sessionID, { Handle => $dbh } );
1658     }
1659     elsif ( $storage_method eq 'Pg' ) {
1660         $session = new CGI::Session( "driver:PostgreSQL;serializer:yaml;id:md5", $sessionID, { Handle => $dbh } );
1661     }
1662     elsif ( $storage_method eq 'memcached' && C4::Context->ismemcached ) {
1663         $session = new CGI::Session( "driver:memcached;serializer:yaml;id:md5", $sessionID, { Memcached => C4::Context->memcached } );
1664     }
1665     else {
1666         # catch all defaults to tmp should work on all systems
1667         $session = new CGI::Session( "driver:File;serializer:yaml;id:md5", $sessionID, { Directory => '/tmp' } );
1668     }
1669     return $session;
1670 }
1671
1672 sub checkpw {
1673     my ( $dbh, $userid, $password, $query ) = @_;
1674     if ($ldap) {
1675         $debug and print STDERR "## checkpw - checking LDAP\n";
1676         my ( $retval, $retcard, $retuserid ) = checkpw_ldap(@_);    # EXTERNAL AUTH
1677         return 0 if $retval == -1;                                  # Incorrect password for LDAP login attempt
1678         ($retval) and return ( $retval, $retcard, $retuserid );
1679     }
1680
1681     if ( $cas && $query && $query->param('ticket') ) {
1682         $debug and print STDERR "## checkpw - checking CAS\n";
1683
1684         # In case of a CAS authentication, we use the ticket instead of the password
1685         my $ticket = $query->param('ticket');
1686         $query->delete('ticket');                                   # remove ticket to come back to original URL
1687         my ( $retval, $retcard, $retuserid ) = checkpw_cas( $dbh, $ticket, $query );    # EXTERNAL AUTH
1688         ($retval) and return ( $retval, $retcard, $retuserid );
1689         return 0;
1690     }
1691
1692     # If we are in a shibboleth session (shibboleth is enabled, and a shibboleth match attribute is present)
1693     # Check for password to asertain whether we want to be testing against shibboleth or another method this
1694     # time around.
1695     if ( $shib && $shib_login && !$password ) {
1696
1697         $debug and print STDERR "## checkpw - checking Shibboleth\n";
1698
1699         # In case of a Shibboleth authentication, we expect a shibboleth user attribute
1700         # (defined under shibboleth mapping in koha-conf.xml) to contain the login of the
1701         # shibboleth-authenticated user
1702
1703         # Then, we check if it matches a valid koha user
1704         if ($shib_login) {
1705             my ( $retval, $retcard, $retuserid ) = C4::Auth_with_shibboleth::checkpw_shib($shib_login);    # EXTERNAL AUTH
1706             ($retval) and return ( $retval, $retcard, $retuserid );
1707             return 0;
1708         }
1709     }
1710
1711     # INTERNAL AUTH
1712     return checkpw_internal(@_)
1713 }
1714
1715 sub checkpw_internal {
1716     my ( $dbh, $userid, $password ) = @_;
1717
1718     if ( $userid && $userid eq C4::Context->config('user') ) {
1719         if ( $password && $password eq C4::Context->config('pass') ) {
1720
1721             # Koha superuser account
1722             #     C4::Context->set_userenv(0,0,C4::Context->config('user'),C4::Context->config('user'),C4::Context->config('user'),"",1);
1723             return 2;
1724         }
1725         else {
1726             return 0;
1727         }
1728     }
1729
1730     my $sth =
1731       $dbh->prepare(
1732         "select password,cardnumber,borrowernumber,userid,firstname,surname,branchcode,flags from borrowers where userid=?"
1733       );
1734     $sth->execute($userid);
1735     if ( $sth->rows ) {
1736         my ( $stored_hash, $cardnumber, $borrowernumber, $userid, $firstname,
1737             $surname, $branchcode, $flags )
1738           = $sth->fetchrow;
1739
1740         if ( checkpw_hash( $password, $stored_hash ) ) {
1741
1742             C4::Context->set_userenv( "$borrowernumber", $userid, $cardnumber,
1743                 $firstname, $surname, $branchcode, $flags );
1744             return 1, $cardnumber, $userid;
1745         }
1746     }
1747     $sth =
1748       $dbh->prepare(
1749         "select password,cardnumber,borrowernumber,userid, firstname,surname,branchcode,flags from borrowers where cardnumber=?"
1750       );
1751     $sth->execute($userid);
1752     if ( $sth->rows ) {
1753         my ( $stored_hash, $cardnumber, $borrowernumber, $userid, $firstname,
1754             $surname, $branchcode, $flags )
1755           = $sth->fetchrow;
1756
1757         if ( checkpw_hash( $password, $stored_hash ) ) {
1758
1759             C4::Context->set_userenv( $borrowernumber, $userid, $cardnumber,
1760                 $firstname, $surname, $branchcode, $flags );
1761             return 1, $cardnumber, $userid;
1762         }
1763     }
1764     if ( $userid && $userid eq 'demo'
1765         && "$password" eq 'demo'
1766         && C4::Context->config('demo') )
1767     {
1768
1769         # DEMO => the demo user is allowed to do everything (if demo set to 1 in koha.conf
1770         # some features won't be effective : modify systempref, modify MARC structure,
1771         return 2;
1772     }
1773     return 0;
1774 }
1775
1776 sub checkpw_hash {
1777     my ( $password, $stored_hash ) = @_;
1778
1779     return if $stored_hash eq '!';
1780
1781     # check what encryption algorithm was implemented: Bcrypt - if the hash starts with '$2' it is Bcrypt else md5
1782     my $hash;
1783     if ( substr( $stored_hash, 0, 2 ) eq '$2' ) {
1784         $hash = hash_password( $password, $stored_hash );
1785     } else {
1786         $hash = md5_base64($password);
1787     }
1788     return $hash eq $stored_hash;
1789 }
1790
1791 =head2 getuserflags
1792
1793     my $authflags = getuserflags($flags, $userid, [$dbh]);
1794
1795 Translates integer flags into permissions strings hash.
1796
1797 C<$flags> is the integer userflags value ( borrowers.userflags )
1798 C<$userid> is the members.userid, used for building subpermissions
1799 C<$authflags> is a hashref of permissions
1800
1801 =cut
1802
1803 sub getuserflags {
1804     my $flags  = shift;
1805     my $userid = shift;
1806     my $dbh    = @_ ? shift : C4::Context->dbh;
1807     my $userflags;
1808     {
1809         # I don't want to do this, but if someone logs in as the database
1810         # user, it would be preferable not to spam them to death with
1811         # numeric warnings. So, we make $flags numeric.
1812         no warnings 'numeric';
1813         $flags += 0;
1814     }
1815     my $sth = $dbh->prepare("SELECT bit, flag, defaulton FROM userflags");
1816     $sth->execute;
1817
1818     while ( my ( $bit, $flag, $defaulton ) = $sth->fetchrow ) {
1819         if ( ( $flags & ( 2**$bit ) ) || $defaulton ) {
1820             $userflags->{$flag} = 1;
1821         }
1822         else {
1823             $userflags->{$flag} = 0;
1824         }
1825     }
1826
1827     # get subpermissions and merge with top-level permissions
1828     my $user_subperms = get_user_subpermissions($userid);
1829     foreach my $module ( keys %$user_subperms ) {
1830         next if $userflags->{$module} == 1;    # user already has permission for everything in this module
1831         $userflags->{$module} = $user_subperms->{$module};
1832     }
1833
1834     return $userflags;
1835 }
1836
1837 =head2 get_user_subpermissions
1838
1839   $user_perm_hashref = get_user_subpermissions($userid);
1840
1841 Given the userid (note, not the borrowernumber) of a staff user,
1842 return a hashref of hashrefs of the specific subpermissions
1843 accorded to the user.  An example return is
1844
1845  {
1846     tools => {
1847         export_catalog => 1,
1848         import_patrons => 1,
1849     }
1850  }
1851
1852 The top-level hash-key is a module or function code from
1853 userflags.flag, while the second-level key is a code
1854 from permissions.
1855
1856 The results of this function do not give a complete picture
1857 of the functions that a staff user can access; it is also
1858 necessary to check borrowers.flags.
1859
1860 =cut
1861
1862 sub get_user_subpermissions {
1863     my $userid = shift;
1864
1865     my $dbh = C4::Context->dbh;
1866     my $sth = $dbh->prepare( "SELECT flag, user_permissions.code
1867                              FROM user_permissions
1868                              JOIN permissions USING (module_bit, code)
1869                              JOIN userflags ON (module_bit = bit)
1870                              JOIN borrowers USING (borrowernumber)
1871                              WHERE userid = ?" );
1872     $sth->execute($userid);
1873
1874     my $user_perms = {};
1875     while ( my $perm = $sth->fetchrow_hashref ) {
1876         $user_perms->{ $perm->{'flag'} }->{ $perm->{'code'} } = 1;
1877     }
1878     return $user_perms;
1879 }
1880
1881 =head2 get_all_subpermissions
1882
1883   my $perm_hashref = get_all_subpermissions();
1884
1885 Returns a hashref of hashrefs defining all specific
1886 permissions currently defined.  The return value
1887 has the same structure as that of C<get_user_subpermissions>,
1888 except that the innermost hash value is the description
1889 of the subpermission.
1890
1891 =cut
1892
1893 sub get_all_subpermissions {
1894     my $dbh = C4::Context->dbh;
1895     my $sth = $dbh->prepare( "SELECT flag, code, description
1896                              FROM permissions
1897                              JOIN userflags ON (module_bit = bit)" );
1898     $sth->execute();
1899
1900     my $all_perms = {};
1901     while ( my $perm = $sth->fetchrow_hashref ) {
1902         $all_perms->{ $perm->{'flag'} }->{ $perm->{'code'} } = $perm->{'description'};
1903     }
1904     return $all_perms;
1905 }
1906
1907 =head2 haspermission
1908
1909   $flags = ($userid, $flagsrequired);
1910
1911 C<$userid> the userid of the member
1912 C<$flags> is a hashref of required flags like C<$borrower-&lt;{authflags}>
1913
1914 Returns member's flags or 0 if a permission is not met.
1915
1916 =cut
1917
1918 sub haspermission {
1919     my ( $userid, $flagsrequired ) = @_;
1920     my $sth = C4::Context->dbh->prepare("SELECT flags FROM borrowers WHERE userid=?");
1921     $sth->execute($userid);
1922     my $row = $sth->fetchrow();
1923     my $flags = getuserflags( $row, $userid );
1924     if ( $userid eq C4::Context->config('user') ) {
1925
1926         # Super User Account from /etc/koha.conf
1927         $flags->{'superlibrarian'} = 1;
1928     }
1929     elsif ( $userid eq 'demo' && C4::Context->config('demo') ) {
1930
1931         # Demo user that can do "anything" (demo=1 in /etc/koha.conf)
1932         $flags->{'superlibrarian'} = 1;
1933     }
1934
1935     return $flags if $flags->{superlibrarian};
1936
1937     foreach my $module ( keys %$flagsrequired ) {
1938         my $subperm = $flagsrequired->{$module};
1939         if ( $subperm eq '*' ) {
1940             return 0 unless ( $flags->{$module} == 1 or ref( $flags->{$module} ) );
1941         } else {
1942             return 0 unless ( $flags->{$module} == 1 or
1943                 ( ref( $flags->{$module} ) and
1944                     exists $flags->{$module}->{$subperm} and
1945                     $flags->{$module}->{$subperm} == 1
1946                 )
1947             );
1948         }
1949     }
1950     return $flags;
1951
1952     #FIXME - This fcn should return the failed permission so a suitable error msg can be delivered.
1953 }
1954
1955 sub getborrowernumber {
1956     my ($userid) = @_;
1957     my $userenv = C4::Context->userenv;
1958     if ( defined($userenv) && ref($userenv) eq 'HASH' && $userenv->{number} ) {
1959         return $userenv->{number};
1960     }
1961     my $dbh = C4::Context->dbh;
1962     for my $field ( 'userid', 'cardnumber' ) {
1963         my $sth =
1964           $dbh->prepare("select borrowernumber from borrowers where $field=?");
1965         $sth->execute($userid);
1966         if ( $sth->rows ) {
1967             my ($bnumber) = $sth->fetchrow;
1968             return $bnumber;
1969         }
1970     }
1971     return 0;
1972 }
1973
1974 END { }    # module clean-up code here (global destructor)
1975 1;
1976 __END__
1977
1978 =head1 SEE ALSO
1979
1980 CGI(3)
1981
1982 C4::Output(3)
1983
1984 Crypt::Eksblowfish::Bcrypt(3)
1985
1986 Digest::MD5(3)
1987
1988 =cut