installer/InstallAuth.pm

   1 # -*- tab-width: 8 -*-
   2 # NOTE: This file uses 8-character tabs; do not change the tab size!
   3
   4 package InstallAuth;
   5
   6 # Copyright 2000-2002 Katipo Communications
   7 #
   8 # This file is part of Koha.
   9 #
  10 # Koha is free software; you can redistribute it and/or modify it under the
  11 # terms of the GNU General Public License as published by the Free Software
  12 # Foundation; either version 2 of the License, or (at your option) any later
  13 # version.
  14 #
  15 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  16 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  17 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License along
  20 # with Koha; if not, write to the Free Software Foundation, Inc.,
  21 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22
  23 use strict;
  24 #use warnings; FIXME - Bug 2505
  25 use Digest::MD5 qw(md5_base64);
  26
  27 require Exporter;
  28 use C4::Context;
  29 use C4::Output;
  30 use C4::Templates;
  31 use C4::Koha;
  32 use CGI::Session;
  33
  34 use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
  35
  36 # set the version for version checking
  37 $VERSION = 3.00;
  38
  39 =head1 NAME
  40
  41 InstallAuth - Authenticates Koha users for Install process
  42
  43 =head1 SYNOPSIS
  44
  45   use CGI;
  46   use InstallAuth;
  47   use C4::Output;
  48
  49   my $query = new CGI;
  50
  51   my ($template, $borrowernumber, $cookie)
  52     = get_template_and_user({template_name   => "opac-main.tmpl",
  53                              query           => $query,
  54                              type            => "opac",
  55                              authnotrequired => 1,
  56                              flagsrequired   => {borrow => 1},
  57                           });
  58
  59   output_html_with_http_headers $query, $cookie, $template->output;
  60
  61 =head1 DESCRIPTION
  62
  63     The main function of this module is to provide
  64     authentification. However the get_template_and_user function has
  65     been provided so that a users login information is passed along
  66     automatically. This gets loaded into the template.
  67     This package is different from C4::Auth in so far as
  68     C4::Auth uses many preferences which are supposed NOT to be obtainable when installing the database.
  69
  70     As in C4::Auth, Authentication is based on cookies.
  71
  72 =head1 FUNCTIONS
  73
  74 =over 2
  75
  76 =cut
  77
  78 @ISA    = qw(Exporter);
  79 @EXPORT = qw(
  80   &checkauth
  81   &get_template_and_user
  82 );
  83
  84 =item get_template_and_user
  85
  86   my ($template, $borrowernumber, $cookie)
  87     = get_template_and_user({template_name   => "opac-main.tmpl",
  88                              query           => $query,
  89                              type            => "opac",
  90                              authnotrequired => 1,
  91                              flagsrequired   => {borrow => 1},
  92                           });
  93
  94     This call passes the C<query>, C<flagsrequired> and C<authnotrequired>
  95     to C<&checkauth> (in this module) to perform authentification.
  96     See C<&checkauth> for an explanation of these parameters.
  97
  98     The C<template_name> is then used to find the correct template for
  99     the page. The authenticated users details are loaded onto the
 100     template in the HTML::Template LOOP variable C<USER_INFO>. Also the
 101     C<sessionID> is passed to the template. This can be used in templates
 102     if cookies are disabled. It needs to be put as and input to every
 103     authenticated page.
 104
 105     More information on the C<gettemplate> sub can be found in the
 106     Templates.pm module.
 107
 108 =cut
 109
 110 sub get_template_and_user {
 111     my $in       = shift;
 112     my $query    = $in->{'query'};
 113     my $language =_get_template_language($query->cookie('KohaOpacLanguage'));
 114     my $path     = C4::Context->config('intrahtdocs'). "/prog/". $language;
 115
 116     my $tmplbase = $in->{template_name};
 117     $tmplbase=~ s/\.tmpl$/.tt/;
 118     my $filename = "$path/modules/" . $tmplbase;
 119     my $interface = 'intranet';
 120     my $template = C4::Templates->new( $interface, $filename, $tmplbase, $query);
 121
 122     my ( $user, $cookie, $sessionID, $flags ) = checkauth(
 123         $in->{'query'},
 124         $in->{'authnotrequired'},
 125         $in->{'flagsrequired'},
 126         $in->{'type'}
 127     );
 128
 129     #     use Data::Dumper;warn "utilisateur $user cookie : ".Dumper($cookie);
 130
 131     my $borrowernumber;
 132     if ($user) {
 133         $template->param( loggedinusername => $user );
 134         $template->param( sessionID        => $sessionID );
 135
 136         # We are going to use the $flags returned by checkauth
 137         # to create the template's parameters that will indicate
 138         # which menus the user can access.
 139         if ( ( $flags && $flags->{superlibrarian} == 1 ) ) {
 140             $template->param( CAN_user_circulate        => 1 );
 141             $template->param( CAN_user_catalogue        => 1 );
 142             $template->param( CAN_user_parameters       => 1 );
 143             $template->param( CAN_user_borrowers        => 1 );
 144             $template->param( CAN_user_permission       => 1 );
 145             $template->param( CAN_user_reserveforothers => 1 );
 146             $template->param( CAN_user_borrow           => 1 );
 147             $template->param( CAN_user_editcatalogue    => 1 );
 148             $template->param( CAN_user_updatecharges    => 1 );
 149             $template->param( CAN_user_acquisition      => 1 );
 150             $template->param( CAN_user_management       => 1 );
 151             $template->param( CAN_user_tools            => 1 );
 152             $template->param( CAN_user_editauthorities  => 1 );
 153             $template->param( CAN_user_serials          => 1 );
 154             $template->param( CAN_user_reports          => 1 );
 155         }
 156     }
 157     return ( $template, $borrowernumber, $cookie );
 158 }
 159
 160 sub _get_template_language {
 161
 162     #verify if opac language exists in staff (bug 5660)
 163     #conditions are 1) dir exists and 2) enabled in prefs
 164     my ($opaclang) = @_;
 165     return 'en' unless $opaclang;
 166     $opaclang =~ s/[^a-zA-Z_-]*//g;
 167     my $path = C4::Context->config('intrahtdocs') . "/prog/$opaclang";
 168     -d $path ? $opaclang : 'en';
 169 }
 170
 171 =item checkauth
 172
 173   ($userid, $cookie, $sessionID) = &checkauth($query, $noauth, $flagsrequired, $type);
 174
 175 Verifies that the user is authorized to run this script.  If
 176 the user is authorized, a (userid, cookie, session-id, flags)
 177 quadruple is returned.  If the user is not authorized but does
 178 not have the required privilege (see $flagsrequired below), it
 179 displays an error page and exits.  Otherwise, it displays the
 180 login page and exits.
 181
 182 Note that C<&checkauth> will return if and only if the user
 183 is authorized, so it should be called early on, before any
 184 unfinished operations (e.g., if you've opened a file, then
 185 C<&checkauth> won't close it for you).
 186
 187 C<$query> is the CGI object for the script calling C<&checkauth>.
 188
 189 The C<$noauth> argument is optional. If it is set, then no
 190 authorization is required for the script.
 191
 192 C<&checkauth> fetches user and session information from C<$query> and
 193 ensures that the user is authorized to run scripts that require
 194 authorization.
 195
 196 The C<$flagsrequired> argument specifies the required privileges
 197 the user must have if the username and password are correct.
 198 It should be specified as a reference-to-hash; keys in the hash
 199 should be the "flags" for the user, as specified in the Members
 200 intranet module. Any key specified must correspond to a "flag"
 201 in the userflags table. E.g., { circulate => 1 } would specify
 202 that the user must have the "circulate" privilege in order to
 203 proceed. To make sure that access control is correct, the
 204 C<$flagsrequired> parameter must be specified correctly.
 205
 206 The C<$type> argument specifies whether the template should be
 207 retrieved from the opac or intranet directory tree.  "opac" is
 208 assumed if it is not specified; however, if C<$type> is specified,
 209 "intranet" is assumed if it is not "opac".
 210
 211 If C<$query> does not have a valid session ID associated with it
 212 (i.e., the user has not logged in) or if the session has expired,
 213 C<&checkauth> presents the user with a login page (from the point of
 214 view of the original script, C<&checkauth> does not return). Once the
 215 user has authenticated, C<&checkauth> restarts the original script
 216 (this time, C<&checkauth> returns).
 217
 218 The login page is provided using a HTML::Template, which is set in the
 219 systempreferences table or at the top of this file. The variable C<$type>
 220 selects which template to use, either the opac or the intranet
 221 authentification template.
 222
 223 C<&checkauth> returns a user ID, a cookie, and a session ID. The
 224 cookie should be sent back to the browser; it verifies that the user
 225 has authenticated.
 226
 227 =cut
 228
 229 sub checkauth {
 230     my $query = shift;
 231
 232 # $authnotrequired will be set for scripts which will run without authentication
 233     my $authnotrequired = shift;
 234     my $flagsrequired   = shift;
 235     my $type            = shift;
 236     $type = 'intranet' unless $type;
 237
 238     my $dbh = C4::Context->dbh();
 239     my $template_name;
 240     $template_name = "installer/auth.tmpl";
 241
 242     # state variables
 243     my $loggedin = 0;
 244     my %info;
 245     my ( $userid, $cookie, $sessionID, $flags, $envcookie );
 246     my $logout = $query->param('logout.x');
 247     if ( $sessionID = $query->cookie("CGISESSID") ) {
 248         C4::Context->_new_userenv($sessionID);
 249         my $session =
 250           new CGI::Session( "driver:File;serializer:yaml", $sessionID,
 251             { Directory => '/tmp' } );
 252         if ( $session->param('cardnumber') ) {
 253             C4::Context::set_userenv(
 254                 $session->param('number'),
 255                 $session->param('id'),
 256                 $session->param('cardnumber'),
 257                 $session->param('firstname'),
 258                 $session->param('surname'),
 259                 $session->param('branch'),
 260                 $session->param('branchname'),
 261                 $session->param('flags'),
 262                 $session->param('emailaddress'),
 263                 $session->param('branchprinter')
 264             );
 265             $cookie   = $query->cookie( CGISESSID => $session->id );
 266             $loggedin = 1;
 267             $userid   = $session->param('cardnumber');
 268         }
 269         my ( $ip, $lasttime );
 270
 271         if ($logout) {
 272
 273             # voluntary logout the user
 274             C4::Context->_unset_userenv($sessionID);
 275             $sessionID = undef;
 276             $userid    = undef;
 277            # Commented out due to its lack of usefulness
 278            # open L, ">>/tmp/sessionlog";
 279            # my $time = localtime( time() );
 280            # printf L "%20s from %16s logged out at %30s (manually).\n", $userid,
 281            #   $ip, $time;
 282            # close L;
 283         }
 284     }
 285     unless ($userid) {
 286         my $session =
 287           new CGI::Session( "driver:File;serializer:yaml", undef, { Directory => '/tmp' } );
 288         $sessionID = $session->id;
 289         $userid    = $query->param('userid');
 290         C4::Context->_new_userenv($sessionID);
 291         my $password = $query->param('password');
 292         C4::Context->_new_userenv($sessionID);
 293         my ( $return, $cardnumber ) = checkpw( $userid, $password );
 294         if ($return) {
 295             $loggedin = 1;
 296             # open L, ">>/tmp/sessionlog";
 297             # my $time = localtime( time() );
 298             # printf L "%20s from %16s logged in  at %30s.\n", $userid,
 299             #  $ENV{'REMOTE_ADDR'}, $time;
 300             # close L;
 301             $cookie = $query->cookie( CGISESSID => $sessionID );
 302             if ( $return == 2 ) {
 303
 304            #Only superlibrarian should have access to this page.
 305            #Since if it is a user, it is supposed that there is a borrower table
 306            #And thus that data structure is loaded.
 307                 my $hash = C4::Context::set_userenv(
 308                     0,                           0,
 309                     C4::Context->config('user'), C4::Context->config('user'),
 310                     C4::Context->config('user'), "",
 311                     "NO_LIBRARY_SET",            1,
 312                     ""
 313                 );
 314                 $session->param( 'number',     0 );
 315                 $session->param( 'id',         C4::Context->config('user') );
 316                 $session->param( 'cardnumber', C4::Context->config('user') );
 317                 $session->param( 'firstname',  C4::Context->config('user') );
 318                 $session->param( 'surname',    C4::Context->config('user'), );
 319                 $session->param( 'branch',     'NO_LIBRARY_SET' );
 320                 $session->param( 'branchname', 'NO_LIBRARY_SET' );
 321                 $session->param( 'flags',      1 );
 322                 $session->param( 'emailaddress',
 323                     C4::Context->preference('KohaAdminEmailAddress') );
 324                 $session->param( 'ip',       $session->remote_addr() );
 325                 $session->param( 'lasttime', time() );
 326                 $userid = C4::Context->config('user');
 327             }
 328         }
 329         else {
 330             if ($userid) {
 331                 $info{'invalid_username_or_password'} = 1;
 332                 C4::Context->_unset_userenv($sessionID);
 333             }
 334         }
 335     }
 336
 337     # finished authentification, now respond
 338     if ($loggedin) {
 339
 340         # successful login
 341         unless ($cookie) {
 342             $cookie = $query->cookie(
 343                 -name    => 'CGISESSID',
 344                 -value   => '',
 345                 -expires => ''
 346             );
 347         }
 348         if ($envcookie) {
 349             return ( $userid, [ $cookie, $envcookie ], $sessionID, $flags );
 350         }
 351         else {
 352             return ( $userid, $cookie, $sessionID, $flags );
 353         }
 354     }
 355
 356     # else we have a problem...
 357     # get the inputs from the incoming query
 358     my @inputs = ();
 359     foreach my $name ( param $query) {
 360         (next) if ( $name eq 'userid' || $name eq 'password' );
 361         my $value = $query->param($name);
 362         push @inputs, { name => $name, value => $value };
 363     }
 364
 365     my $path =
 366       C4::Context->config('intrahtdocs') . "/prog/"
 367       . ( $query->param('language') ? $query->param('language') : "en" );
 368     my $filename = "$path/modules/$template_name";
 369     $filename =~ s/\.tmpl$/.tt/;
 370     my $interface = 'intranet';
 371     my $template = C4::Templates->new( $interface, $filename, '', $query);
 372     $template->param(
 373         INPUTS => \@inputs,
 374
 375     );
 376     $template->param( login => 1 );
 377     $template->param( loginprompt => 1 ) unless $info{'nopermission'};
 378
 379     my $self_url = $query->url( -absolute => 1 );
 380     $template->param( url => $self_url, );
 381     $template->param( \%info );
 382     $cookie = $query->cookie(
 383         -name    => 'CGISESSID',
 384         -value   => $sessionID,
 385         -expires => ''
 386     );
 387     print $query->header(
 388         -type    => 'text/html; charset=utf-8',
 389         -cookie  => $cookie
 390       ),
 391       $template->output;
 392     exit;
 393 }
 394
 395 sub checkpw {
 396
 397     my ( $userid, $password ) = @_;
 398
 399     if (   $userid
 400         && $userid     eq C4::Context->config('user')
 401         && "$password" eq C4::Context->config('pass') )
 402     {
 403
 404         # Koha superuser account
 405         C4::Context->set_userenv(
 406             0, 0,
 407             C4::Context->config('user'),
 408             C4::Context->config('user'),
 409             C4::Context->config('user'),
 410             "", 1
 411         );
 412         return 2;
 413     }
 414     if (   $userid
 415         && $userid     eq 'demo'
 416         && "$password" eq 'demo'
 417         && C4::Context->config('demo') )
 418     {
 419
 420 # DEMO => the demo user is allowed to do everything (if demo set to 1 in koha.conf
 421 # some features won't be effective : modify systempref, modify MARC structure,
 422         return 2;
 423     }
 424     return 0;
 425 }
 426
 427 END { }    # module clean-up code here (global destructor)
 428 1;
 429 __END__
 430
 431 =back
 432
 433 =head1 SEE ALSO
 434
 435 CGI(3)
 436
 437 C4::Output(3)
 438
 439 Digest::MD5(3)
 440
 441 =cut