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executable file 244 lines (210 sloc) 8.138 kB
#!/usr/bin/perl
# Copyright 2009 SARL Biblibre
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with Koha; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
use strict;
use warnings;
use List::MoreUtils qw(any);
use C4::ILSDI::Services;
use C4::Auth;
use C4::Output;
use C4::Context;
use XML::Simple;
use CGI;
=head1 DLF ILS-DI for Koha
This script is a basic implementation of ILS-DI protocol for Koha.
It acts like a dispatcher, that get the CGI request, check required and
optionals arguments, call a function from C4::ILS-DI, and finaly
outputs the returned hashref as XML.
=cut
# Instanciate the CGI request
my $cgi = new CGI;
# List of available services, sorted by level
my @services = (
'Describe', # Not part of ILS-DI, online API doc
# Level 1: Basic Discovery Interfaces
# 'HarvestBibliographicRecords', # OAI-PMH
# 'HarvestExpandedRecords', # OAI-PMH
'GetAvailability', # FIXME Add bibbliographic level
# 'GoToBibliographicRequestPage' # I don't understant this one
# Level 2: Elementary OPAC supplement
# 'HarvestAuthorityRecords', # OAI-PMH
# 'HarvestHoldingsRecords', # OAI-PMH
'GetRecords', # Note that we can use OAI-PMH for this too
# 'Search', # TODO
# 'Scan', # TODO
'GetAuthorityRecords',
# 'OutputRewritablePage', # I don't understant this one
# 'OutputIntermediateFormat', # I don't understant this one
# Level 3: Elementary OPAC alternative
'LookupPatron',
'AuthenticatePatron',
'GetPatronInfo',
'GetPatronStatus',
'GetServices', # FIXME Loans
'RenewLoan',
'HoldTitle', # FIXME Add dates support
'HoldItem', # FIXME Add dates support
'CancelHold',
# 'RecallItem', # Not supported by Koha
# 'CancelRecall', # Not supported by Koha
# Level 4: Robust/domain specific discovery platforms
# 'SearchCourseReserves', # TODO
# 'Explain' # TODO
);
# List of required arguments
my %required = (
'Describe' => ['verb'],
'GetAvailability' => [ 'id', 'id_type' ],
'GetRecords' => ['id'],
'GetAuthorityRecords' => ['id'],
'LookupPatron' => ['id'],
'AuthenticatePatron' => [ 'username', 'password' ],
'GetPatronInfo' => ['patron_id'],
'GetPatronStatus' => ['patron_id'],
'GetServices' => [ 'patron_id', 'item_id' ],
'RenewLoan' => [ 'patron_id', 'item_id' ],
'HoldTitle' => [ 'patron_id', 'bib_id', 'request_location' ],
'HoldItem' => [ 'patron_id', 'bib_id', 'item_id' ],
'CancelHold' => [ 'patron_id', 'item_id' ],
);
# List of optional arguments
my %optional = (
'Describe' => [],
'GetAvailability' => [ 'return_type', 'return_fmt' ],
'GetRecords' => ['schema'],
'GetAuthorityRecords' => ['schema'],
'LookupPatron' => ['id_type'],
'AuthenticatePatron' => [],
'GetPatronInfo' => [ 'show_contact', 'show_fines', 'show_holds', 'show_loans' ],
'GetPatronStatus' => [],
'GetServices' => [],
'RenewLoan' => ['desired_due_date'],
'HoldTitle' => [ 'pickup_location', 'needed_before_date', 'pickup_expiry_date' ],
'HoldItem' => [ 'pickup_location', 'needed_before_date', 'pickup_expiry_date' ],
'CancelHold' => [],
);
# If no service is requested, display the online documentation
unless ( $cgi->param('service') ) {
my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
{ template_name => "ilsdi.tmpl",
query => $cgi,
type => "opac",
authnotrequired => 1,
debug => 1,
}
);
output_html_with_http_headers $cgi, $cookie, $template->output;
exit 0;
}
# If user requested a service description, then display it
if ( $cgi->param('service') eq "Describe" and any { $cgi->param('verb') eq $_ } @services ) {
my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
{ template_name => "ilsdi.tmpl",
query => $cgi,
type => "opac",
authnotrequired => 1,
debug => 1,
}
);
$template->param( $cgi->param('verb') => 1 );
output_html_with_http_headers $cgi, $cookie, $template->output;
exit 0;
}
my $out;
# If ILS-DI module is disabled in System->Preferences, redirect to 404
unless ( C4::Context->preference('ILS-DI') ) {
$out->{'code'} = "NotAllowed";
$out->{'message'} = "ILS-DI is disabled.";
}
# If the remote address is not allowed, redirect to 403
my @AuthorizedIPs = split(/,/, C4::Context->preference('ILS-DI:AuthorizedIPs'));
if ( @AuthorizedIPs # If no filter set, allow access to everybody
and not any { $ENV{'REMOTE_ADDR'} eq $_ } @AuthorizedIPs # IP Check
) {
$out->{'code'} = "NotAllowed";
$out->{'message'} = "Unauthorized IP address: ".$ENV{'REMOTE_ADDR'}.".";
}
my $service = $cgi->param('service') || "ilsdi";
# Check if the requested service is in the list
if ( $service and any { $service eq $_ } @services ) {
my @parmsrequired = @{ $required{$service} };
my @parmsoptional = @{ $optional{$service} };
my @parmsall = ( @parmsrequired, @parmsoptional );
my @names = $cgi->param;
my %paramhash;
$paramhash{$_} = 1 for @names;
# check for missing parameters
for ( @parmsrequired ) {
unless ( exists $paramhash{$_} ) {
$out->{'code'} = "MissingParameter";
$out->{'message'} = "The required parameter ".$_." is missing.";
}
}
# check for illegal parameters
for my $name ( @names ) {
my $found = 0;
for my $name2 (@parmsall) {
if ( $name eq $name2 ) {
$found = 1;
}
}
if ( $found == 0 && $name ne 'service' ) {
$out->{'code'} = "IllegalParameter";
$out->{'message'} = "The parameter ".$name." is illegal.";
}
}
# check for multiple parameters
for ( @names ) {
my @values = $cgi->param($_);
if ( $#values != 0 ) {
$out->{'code'} = "MultipleValuesNotAllowed";
$out->{'message'} = "Multiple values not allowed for the parameter ".$_.".";
}
}
if ( !$out->{'message'} ) {
# GetAvailability is a special case, as it cannot use XML::Simple
if ( $service eq "GetAvailability" ) {
print CGI::header('text/xml');
print C4::ILSDI::GetAvailability($cgi);
exit 0;
} else {
# Variable functions
my $sub = do {
no strict 'refs';
my $symbol = 'C4::ILSDI::Services::' . $service;
\&{"$symbol"};
};
# Call the requested service, and get its return value
$out = &$sub($cgi);
}
}
} else {
$out->{'message'} = "NotSupported";
}
# Output XML by passing the hashref to XMLOut
binmode(STDOUT, ":utf8");
print CGI::header('-type'=>'text/xml', '-charset'=>'utf-8');
print XMLout(
$out,
noattr => 1,
noescape => 1,
nosort => 1,
xmldecl => '<?xml version="1.0" encoding="UTF-8" ?>',
RootName => $service,
SuppressEmpty => 1
);
exit 0;
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