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kitodo-presentation/dlf/plugins/oai/class.tx_dlf_oai.php

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<?php
/***************************************************************
* Copyright notice
*
* (c) 2011 Sebastian Meyer <sebastian.meyer@slub-dresden.de>
* All rights reserved
*
* This script is part of the TYPO3 project. The TYPO3 project 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.
*
* The GNU General Public License can be found at
* http://www.gnu.org/copyleft/gpl.html.
*
* This script 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.
*
* This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
/**
* [CLASS/FUNCTION INDEX of SCRIPT]
*/
/**
* Plugin 'DLF: OAI-PMH Interface' for the 'dlf' extension.
*
* @author Sebastian Meyer <sebastian.meyer@slub-dresden.de>
* @copyright Copyright (c) 2011, Sebastian Meyer, SLUB Dresden
* @package TYPO3
* @subpackage tx_dlf
* @access public
*/
class tx_dlf_oai extends tx_dlf_plugin {
public $scriptRelPath = 'plugins/oai/class.tx_dlf_oai.php';
/**
* Did an error occur?
*
* @var boolean
* @access protected
*/
protected $error = FALSE;
/**
* This holds the OAI DOM object
*
* @var DOMDocument
* @access protected
*/
protected $oai;
/**
* This holds the configuration for all supported metadata prefixes
*
* @var array
* @access protected
*/
protected $formats = array (
'oai_dc' => array (
'schema' => 'http://www.openarchives.org/OAI/2.0/oai_dc.xsd',
'namespace' => 'http://www.openarchives.org/OAI/2.0/oai_dc/',
'requiredFields' => array ('record_id'),
),
'epicur' => array (
'schema' => 'http://www.persistent-identifier.de/xepicur/version1.0/xepicur.xsd',
'namespace' => 'urn:nbn:de:1111-2004033116',
'requiredFields' => array ('purl', 'urn'),
),
'mets' => array (
'schema' => 'http://www.loc.gov/standards/mets/version17/mets.v1-7.xsd',
'namespace' => 'http://www.loc.gov/METS/',
'requiredFields' => array ('location'),
)
);
/**
* Delete expired resumption tokens
*
* @access protected
*
* @return void
*/
protected function deleteExpiredTokens() {
// Delete expired resumption tokens.
$_result = $GLOBALS['TYPO3_DB']->exec_DELETEquery(
'tx_dlf_tokens',
'tx_dlf_tokens.ident="oai" AND tx_dlf_tokens.tstamp<'.intval($GLOBALS['EXEC_TIME'] - $this->conf['expired'])
);
if ($GLOBALS['TYPO3_DB']->sql_affected_rows($_result) === -1) {
// Deletion failed.
trigger_error('Could not delete expired resumption tokens', E_USER_ERROR);
}
}
/**
* Process error
*
* @access protected
*
* @param string $type: Error type
*
* @return DOMElement XML node to add to the OAI response
*/
protected function error($type) {
$this->error = TRUE;
$error = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'error', htmlspecialchars($this->pi_getLL($type, $type, FALSE), ENT_NOQUOTES, 'UTF-8'));
$error->setAttribute('code', $type);
return $error;
}
/**
* Load URL parameters
*
* @access protected
*
* @return void
*/
protected function getUrlParams() {
$_allowedParams = array (
'verb',
'identifier',
'metadataPrefix',
'from',
'until',
'set',
'resumptionToken'
);
// Clear plugin variables.
$this->piVars = array ();
// Set only allowed parameters.
foreach ($_allowedParams as $_param) {
if (t3lib_div::_GP($_param)) {
$this->piVars[$_param] = t3lib_div::_GP($_param);
}
}
}
/**
* Get unqualified Dublin Core data.
* @see http://www.openarchives.org/OAI/openarchivesprotocol.html#dublincore
*
* @access protected
*
* @param array $metadata: The metadata array
*
* @return DOMElement XML node to add to the OAI response
*/
protected function getDcData(array $metadata) {
$oai_dc = $this->oai->createElementNS($this->formats['oai_dc']['namespace'], 'oai_dc:dc');
$oai_dc->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:dc', 'http://purl.org/dc/elements/1.1/');
$oai_dc->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
$oai_dc->setAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'xsi:schemaLocation', $this->formats['oai_dc']['namespace'].' '.$this->formats['oai_dc']['schema']);
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:identifier', htmlspecialchars($metadata['record_id'], ENT_NOQUOTES, 'UTF-8')));
if (!empty($metadata['purl'])) {
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:identifier', htmlspecialchars($metadata['purl'], ENT_NOQUOTES, 'UTF-8')));
}
if (!empty($metadata['urn'])) {
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:identifier', htmlspecialchars($metadata['urn'], ENT_NOQUOTES, 'UTF-8')));
}
if (!empty($metadata['title'])) {
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:title', htmlspecialchars($metadata['title'], ENT_NOQUOTES, 'UTF-8')));
}
if (!empty($metadata['author'])) {
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:creator', htmlspecialchars($metadata['author'], ENT_NOQUOTES, 'UTF-8')));
}
if (!empty($metadata['year'])) {
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:date', htmlspecialchars($metadata['year'], ENT_NOQUOTES, 'UTF-8')));
}
if (!empty($metadata['place'])) {
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:coverage', htmlspecialchars($metadata['place'], ENT_NOQUOTES, 'UTF-8')));
}
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:format', 'application/mets+xml'));
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:type', 'text'));
if (!empty($metadata['partof'])) {
$_result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
'tx_dlf_documents.record_id',
'tx_dlf_documents',
'tx_dlf_documents.uid='.intval($metadata['partof']).tx_dlf_helper::whereClause('tx_dlf_documents'),
'',
'',
'1'
);
if ($GLOBALS['TYPO3_DB']->sql_num_rows($_result)) {
$_partof = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($_result);
$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:relation', htmlspecialchars($_partof['record_id'], ENT_NOQUOTES, 'UTF-8')));
}
}
return $oai_dc;
}
/**
* Get epicur data.
* @see http://www.persistent-identifier.de/?link=210
*
* @access protected
*
* @param array $metadata: The metadata array
*
* @return DOMElement XML node to add to the OAI response
*/
protected function getEpicurData(array $metadata) {
// Create epicur element.
$epicur = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:epicur');
$epicur->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
$epicur->setAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'xsi:schemaLocation', $this->formats['epicur']['namespace'].' '.$this->formats['epicur']['schema']);
// Add administrative data.
$admin = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:administrative_data');
$delivery = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:delivery');
$update = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:update_status');
// Do we update an URN or register a new one?
if ($metadata['tstamp'] == $metadata['crdate']) {
$update->setAttribute('type', 'urn_new');
} else {
$update->setAttribute('type', 'url_update_general');
}
$delivery->appendChild($update);
$transfer = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:transfer');
$transfer->setAttribute('type', 'http');
$delivery->appendChild($transfer);
$admin->appendChild($delivery);
$epicur->appendChild($admin);
// Add record data.
$record = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:record');
$identifier = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:identifier', htmlspecialchars($metadata['urn'], ENT_NOQUOTES, 'UTF-8'));
$identifier->setAttribute('scheme', 'urn:nbn:de');
$record->appendChild($identifier);
$resource = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:resource');
$ident = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:identifier', htmlspecialchars($metadata['purl'], ENT_NOQUOTES, 'UTF-8'));
$ident->setAttribute('scheme', 'url');
$ident->setAttribute('type', 'frontpage');
$ident->setAttribute('role', 'primary');
$resource->appendChild($ident);
$format = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:format', 'text/html');
$format->setAttribute('scheme', 'imt');
$resource->appendChild($format);
$record->appendChild($resource);
$epicur->appendChild($record);
return $epicur;
}
/**
* Get METS data.
* @see http://www.loc.gov/standards/mets/docs/mets.v1-7.html
*
* @access protected
*
* @param array $metadata: The metadata array
*
* @return DOMElement XML node to add to the OAI response
*/
protected function getMetsData(array $metadata) {
$mets = NULL;
// Load METS file.
$xml = new DOMDocument();
if ($xml->load($metadata['location'])) {
// Get root element.
$root = $xml->getElementsByTagNameNS($this->formats['mets']['namespace'], 'mets');
if ($root->item(0) instanceof DOMNode) {
// Import node into DOMDocument.
$mets = $this->oai->importNode($root->item(0), TRUE);
} else {
trigger_error('No METS node found in file "'.$location.'"', E_USER_ERROR);
}
} else {
trigger_error('Could not load file "'.$location.'"', E_USER_ERROR);
}
if ($mets === NULL) {
$mets = $this->oai->createElementNS('http://goobi.org/', 'goobi:error', htmlspecialchars($this->pi_getLL('error', 'Error!', FALSE), ENT_NOQUOTES, 'UTF-8'));
}
return $mets;
}
/**
* The main method of the PlugIn
*
* @access public
*
* @param string $content: The PlugIn content
* @param array $conf: The PlugIn configuration
*
* @return void
*/
public function main($content, $conf) {
// Initialize plugin.
$this->init($conf);
// Turn cache off.
$this->setCache(FALSE);
// Get GET and POST variables.
$this->getUrlParams();
// Delete expired resumption tokens.
$this->deleteExpiredTokens();
// Create XML document.
$this->oai = new DOMDocument('1.0', 'utf-8');
// Add processing instruction (aka XSL stylesheet).
if (!empty($this->conf['stylesheet'])) {
// Resolve "EXT:" prefix in file path.
if (substr($this->conf['stylesheet'], 0, 4) == 'EXT:') {
list ($_extKey, $_filePath) = explode('/', substr($this->conf['stylesheet'], 4), 2);
if (t3lib_extMgm::isLoaded($_extKey)) {
$this->conf['stylesheet'] = t3lib_extMgm::siteRelPath($_extKey).$_filePath;
}
}
$_stylesheet = t3lib_div::locationHeaderUrl($this->conf['stylesheet']);
} else {
// Use default stylesheet if no custom stylesheet is given.
$_stylesheet = t3lib_div::locationHeaderUrl(t3lib_extMgm::siteRelPath($this->extKey).'plugins/oai/transform.xsl');
}
$this->oai->appendChild($this->oai->createProcessingInstruction('xml-stylesheet', 'type="text/xsl" href="'.htmlspecialchars($_stylesheet, ENT_NOQUOTES, 'UTF-8').'"'));
// Create root element.
$root = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'OAI-PMH');
$root->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
$root->setAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'xsi:schemaLocation', 'http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd');
// Add response date.
$root->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'responseDate', gmdate('Y-m-d\TH:i:s\Z', $GLOBALS['EXEC_TIME'])));
// Get response data.
switch ($this->piVars['verb']) {
case 'GetRecord':
$response = $this->verbGetRecord();
break;
case 'Identify':
$response = $this->verbIdentify();
break;
case 'ListIdentifiers':
$response = $this->verbListIdentifiers();
break;
case 'ListMetadataFormats':
$response = $this->verbListMetadataFormats();
break;
case 'ListRecords':
$response = $this->verbListRecords();
break;
case 'ListSets':
$response = $this->verbListSets();
break;
default:
$response = $this->error('badVerb');
}
// Add request.
$request = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'request', htmlspecialchars(t3lib_div::locationHeaderUrl($this->pi_getPageLink($GLOBALS['TSFE']->id)), ENT_NOQUOTES, 'UTF-8'));
if (!$this->error) {
foreach ($this->piVars as $key => $value) {
$request->setAttribute($key, htmlspecialchars($value, ENT_NOQUOTES, 'UTF-8'));
}
}
$root->appendChild($request);
// Add response data.
$root->appendChild($response);
// Build XML output.
$this->oai->appendChild($root);
$content = $this->oai->saveXML();
// Send headers.
header('HTTP/1.1 200 OK');
header('Cache-Control: no-cache');
header('Content-Length: '.strlen($content));
header('Content-Type: text/xml; charset=utf-8');
header('Date: '.date('r', $GLOBALS['EXEC_TIME']));
header('Expires: '.date('r', $GLOBALS['EXEC_TIME']));
echo $content;
// Flush output buffer and end script processing.
ob_end_flush();
exit;
}
/**
* Continue with resumption token
*
* @access protected
*
* @return string Substitution for subpart "###RESPONSE###"
*/
protected function resume() {
// Get resumption token.
$_result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
'tx_dlf_tokens.options AS options',
'tx_dlf_tokens',
'tx_dlf_tokens.ident="oai" AND tx_dlf_tokens.token='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->piVars['resumptionToken'], 'tx_dlf_tokens'),
'',
'',
'1'
);
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($_result)) {
// No resumption token found or resumption token expired.
return $this->error('badResumptionToken');
}
$_resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($_result);
$resultSet = unserialize($_resArray['options']);
$complete = FALSE;
$todo = array ();
$resume = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', $this->piVars['verb']);
for ($i = $resultSet->metadata['offset'], $j = intval($resultSet->metadata['offset'] + $this->conf['limit']); $i < $j; $i++) {
$todo[] = $resultSet->elements[$i]['uid'];
if (empty($resultSet->elements[$i + 1])) {
$complete = TRUE;
break;
}
}
$result = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
'tx_dlf_documents.*,GROUP_CONCAT(DISTINCT tx_dlf_collections.oai_name ORDER BY tx_dlf_collections.oai_name SEPARATOR " ") AS collections',
'tx_dlf_documents',
'tx_dlf_relations',
'tx_dlf_collections',
'AND tx_dlf_documents.uid IN ('.implode(',', $GLOBALS['TYPO3_DB']->cleanIntArray($todo)).') AND tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.pid='.intval($this->conf['pages']).$where.tx_dlf_helper::whereClause('tx_dlf_collections'),
'tx_dlf_documents.uid',
'tx_dlf_documents.tstamp',
$this->conf['limit']
);
while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
// Add header node.
$header = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'header');
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'identifier', htmlspecialchars($resArray['record_id'], ENT_NOQUOTES, 'UTF-8')));
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'datestamp', gmdate('Y-m-d\TH:i:s\Z', $resArray['tstamp'])));
// Check if document is deleted or hidden.
// TODO: Use TYPO3 API functions here!
if ($resArray['deleted'] || $resArray['hidden']) {
// Add "deleted" status.
$header->setAttribute('status', 'deleted');
if ($this->piVars['verb'] == 'ListRecords') {
// Add record node.
$record = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'record');
$record->appendChild($header);
$resume->appendChild($record);
} elseif ($this->piVars['verb'] == 'ListIdentifiers') {
$resume->appendChild($header);
}
} else {
// Add sets.
foreach (explode(' ', $resArray['collections']) as $_spec) {
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setSpec', htmlspecialchars($_spec, ENT_NOQUOTES, 'UTF-8')));
}
if ($this->piVars['verb'] == 'ListRecords') {
// Add record node.
$record = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'record');
$record->appendChild($header);
// Add metadata node.
$metadata = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadata');
switch ($resultSet->metadata['metadataPrefix']) {
case 'oai_dc':
$metadata->appendChild($this->getDcData($resArray));
break;
case 'epicur':
$metadata->appendChild($this->getEpicurData($resArray));
break;
case 'mets':
$metadata->appendChild($this->getMetsData($resArray));
break;
}
$record->appendChild($metadata);
$resume->appendChild($record);
} elseif ($this->piVars['verb'] == 'ListIdentifiers') {
$resume->appendChild($header);
}
}
}
if (!$complete) {
// Save result set to database and generate resumption token.
$token = uniqid();
$resultSet->metadata = array (
'offset' => intval($resultSet->metadata['offset'] + $this->conf['limit']),
'metadataPrefix' => $resultSet->metadata['metadataPrefix'],
);
$_result = $GLOBALS['TYPO3_DB']->exec_INSERTquery(
'tx_dlf_tokens',
array (
'tstamp' => $GLOBALS['EXEC_TIME'],
'token' => $token,
'options' => serialize($resultSet),
'ident' => 'oai',
)
);
if ($GLOBALS['TYPO3_DB']->sql_affected_rows($_result) == 1) {
$resumptionToken = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'resumptionToken', htmlspecialchars($token, ENT_NOQUOTES, 'UTF-8'));
} else {
trigger_error('Could not create resumption token', E_USER_ERROR);
}
} else {
// Result set complete. No more resumption token needed.
$resumptionToken = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'resumptionToken');
}
$resumptionToken->setAttribute('cursor', $resultSet->metadata['offset']);
$resumptionToken->setAttribute('completeListSize', $resultSet->count);
$resume->appendChild($resumptionToken);
return $resume;
}
/**
* Process verb "GetRecord"
*
* @access protected
*
* @return string Substitution for subpart "###RESPONSE###"
*/
protected function verbGetRecord() {
// Check for invalid arguments.
if (count($this->piVars) != 3 || empty($this->piVars['metadataPrefix']) || empty($this->piVars['identifier'])) {
return $this->error('badArgument');
} else {
// Check "metadataPrefix" for valid value.
if (!in_array($this->piVars['metadataPrefix'], array_keys($this->formats))) {
return $this->error('cannotDisseminateFormat');
}
$where = '';
// Select records from database.
if (!$this->conf['show_userdefined']) {
$where .= ' AND tx_dlf_collections.fe_cruser_id=0';
}
$_result = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
'tx_dlf_documents.*,GROUP_CONCAT(DISTINCT tx_dlf_collections.oai_name ORDER BY tx_dlf_collections.oai_name SEPARATOR " ") AS collections',
'tx_dlf_documents',
'tx_dlf_relations',
'tx_dlf_collections',
'AND tx_dlf_documents.record_id='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->piVars['identifier'], 'tx_dlf_documents').' AND tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.pid='.intval($this->conf['pages']).$where.tx_dlf_helper::whereClause('tx_dlf_collections'),
'tx_dlf_documents.uid',
'tx_dlf_documents.tstamp',
'1'
);
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($_result)) {
return $this->error('idDoesNotExist');
} else {
$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($_result);
// Check for required fields.
foreach ($this->formats[$this->piVars['metadataPrefix']]['requiredFields'] as $required) {
if (empty($resArray[$required])) {
return $this->error('cannotDisseminateFormat');
}
}
// Add record node.
$GetRecord = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'GetRecord');
$record = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'record');
// Add header node.
$header = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'header');
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'identifier', htmlspecialchars($resArray['record_id'], ENT_NOQUOTES, 'UTF-8')));
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'datestamp', gmdate('Y-m-d\TH:i:s\Z', $resArray['tstamp'])));
// Handle deleted documents.
// TODO: Use TYPO3 API functions here!
if ($resArray['deleted'] || $resArray['hidden']) {
$header->setAttribute('status', 'deleted');
$record->appendChild($header);
} else {
foreach (explode(' ', $resArray['collections']) as $_spec) {
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setSpec', htmlspecialchars($_spec, ENT_NOQUOTES, 'UTF-8')));
}
$record->appendChild($header);
// Add metadata node.
$metadata = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadata');
switch ($this->piVars['metadataPrefix']) {
case 'oai_dc':
$metadata->appendChild($this->getDcData($resArray));
break;
case 'epicur':
$metadata->appendChild($this->getEpicurData($resArray));
break;
case 'mets':
$metadata->appendChild($this->getMetsData($resArray));
break;
}
$record->appendChild($metadata);
}
$GetRecord->appendChild($record);
return $GetRecord;
}
}
}
/**
* Process verb "Identify"
*
* @access protected
*
* @return DOMElement XML node to add to the OAI response
*/
protected function verbIdentify() {
// Check for invalid arguments.
if (count($this->piVars) > 1) {
return $this->error('badArgument');
}
// Get repository name and administrative contact.
$_result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
'tx_dlf_libraries.oai_label AS oai_label,tx_dlf_libraries.contact AS contact',
'tx_dlf_libraries',
'tx_dlf_libraries.pid='.intval($this->conf['pages']).' AND tx_dlf_libraries.uid='.intval($this->conf['library']).tx_dlf_helper::whereClause('tx_dlf_libraries'),
'',
'',
''
);
if ($GLOBALS['TYPO3_DB']->sql_num_rows($_result)) {
$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($_result);
// Get earliest datestamp.
$_result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
'tx_dlf_documents.tstamp AS tstamp',
'tx_dlf_documents',
'tx_dlf_documents.pid='.intval($this->conf['pages']),
'',
'tx_dlf_documents.tstamp ASC',
'1'
);
if ($GLOBALS['TYPO3_DB']->sql_num_rows($_result)) {
list ($_timestamp) = $GLOBALS['TYPO3_DB']->sql_fetch_row($_result);
$datestamp = gmdate('Y-m-d\TH:i:s\Z', $_timestamp);
} else {
$datestamp = '0000-00-00T00:00:00Z';
trigger_error('No records found with PID '.$this->conf['pages'], E_USER_WARNING);
}
// Add identification node.
$Identify = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'Identify');
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'repositoryName', htmlspecialchars($resArray['oai_label'], ENT_NOQUOTES, 'UTF-8')));
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'baseURL', htmlspecialchars(t3lib_div::locationHeaderUrl($this->pi_getPageLink($GLOBALS['TSFE']->id)), ENT_NOQUOTES, 'UTF-8')));
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'protocolVersion', '2.0'));
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'adminEmail', htmlspecialchars(trim(str_replace('mailto:', '', $resArray['contact'])), ENT_NOQUOTES, 'UTF-8')));
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'earliestDatestamp', $datestamp));
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'deletedRecord', 'transient'));
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'granularity', 'YYYY-MM-DDThh:mm:ssZ'));
return $Identify;
} else {
trigger_error('OAI interface needs more configuration', E_USER_ERROR);
exit;
}
}
/**
* Process verb "ListIdentifiers"
*
* @access protected
*
* @return string Substitution for subpart "###RESPONSE###"
*/
protected function verbListIdentifiers() {
// Check for invalid arguments.
if (!empty($this->piVars['resumptionToken'])) {
// "resumptionToken" is an exclusive argument.
if (count($this->piVars) > 2) {
return $this->error('badArgument');
} else {
return $this->resume();
}
} elseif (empty($this->piVars['metadataPrefix']) || !empty($this->piVars['identifier'])) {
// "metadataPrefix" is required and "identifier" is not allowed.
return $this->error('badArgument');
} else {
$where = '';
// Check "metadataPrefix" for valid value.
if (!in_array($this->piVars['metadataPrefix'], array_keys($this->formats))) {
return $this->error('cannotDisseminateFormat');
} else {
// Check for required fields.
foreach ($this->formats[$this->piVars['metadataPrefix']]['requiredFields'] as $required) {
$where .= ' AND NOT tx_dlf_documents.'.$required.'=""';
}
}
// Check "set" for valid value.
if (!empty($this->piVars['set'])) {
// Get set information.
$_additionalWhere = '';
if (!$this->conf['show_userdefined']) {
$_additionalWhere = ' AND tx_dlf_collections.fe_cruser_id=0';
}
$_result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
'tx_dlf_collections.uid AS uid',
'tx_dlf_collections',
'tx_dlf_collections.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.oai_name='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->piVars['set'], 'tx_dlf_collections').$_additionalWhere.tx_dlf_helper::whereClause('tx_dlf_collections'),
'',
'',
'1'
);
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($_result)) {
return $this->error('noSetHierarchy');
} else {
$_resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($_result);
$where .= ' AND tx_dlf_collections.uid='.intval($_resArray['uid']);
}
}
// Check "from" for valid value.
if (!empty($this->piVars['from'])) {
if (is_array($_from = strptime($this->piVars['from'], '%Y-%m-%dT%H:%M:%SZ')) || is_array($_from = strptime($this->piVars['from'], '%Y-%m-%d'))) {
$_from = gmmktime($_from['tm_hour'], $_from['tm_min'], $_from['tm_sec'], $_from['tm_mon'] + 1, $_from['tm_mday'], $_from['tm_year'] + 1900);
} else {
return $this->error('badArgument');
}
$where .= ' AND tx_dlf_documents.tstamp>='.intval($_from);
}
// Check "until" for valid value.
if (!empty($this->piVars['until'])) {
if (is_array($_until = strptime($this->piVars['until'], '%Y-%m-%dT%H:%M:%SZ')) || is_array($_until = strptime($this->piVars['until'], '%Y-%m-%d'))) {
$_until = gmmktime($_until['tm_hour'], $_until['tm_min'], $_until['tm_sec'], $_until['tm_mon'] + 1, $_until['tm_mday'], $_until['tm_year'] + 1900);
} else {
return $this->error('badArgument');
}
if (!empty($_from) && $_from > $_until) {
return $this->error('badArgument');
}
$where .= ' AND tx_dlf_documents.tstamp<='.intval($_until);
}
// Check "from" and "until" for same granularity.
if (!empty($this->piVars['from']) && !empty($this->piVars['until'])) {
if (strlen($this->piVars['from']) != strlen($this->piVars['until'])) {
return $this->error('badArgument');
}
}
}
// Select records from database.
if (!$this->conf['show_userdefined']) {
$where .= ' AND tx_dlf_collections.fe_cruser_id=0';
}
$result = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
'tx_dlf_documents.uid',
'tx_dlf_documents',
'tx_dlf_relations',
'tx_dlf_collections',
'AND tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.pid='.intval($this->conf['pages']).$where.tx_dlf_helper::whereClause('tx_dlf_collections'),
'tx_dlf_documents.uid',
'tx_dlf_documents.tstamp',
''
);
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
return $this->error('noRecordsMatch');
} else {
// Build result set.
$results = array ();
while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
// Save only UIDs for resumption token.
$results[] = array ('uid' => $resArray['uid']);
}
if (empty($results)) {
return $this->error('noRecordsMatch');
}
$complete = FALSE;
$todo = array ();
$ListIdentifiers = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'ListIdentifiers');
for ($i = 0, $j = intval($this->conf['limit']); $i < $j; $i++) {
$todo[] = $results[$i]['uid'];
if (empty($results[$i + 1])) {
$complete = TRUE;
break;
}
}
$result = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
'tx_dlf_documents.*,GROUP_CONCAT(DISTINCT tx_dlf_collections.oai_name ORDER BY tx_dlf_collections.oai_name SEPARATOR " ") AS collections',
'tx_dlf_documents',
'tx_dlf_relations',
'tx_dlf_collections',
'AND tx_dlf_documents.uid IN ('.implode(',', $GLOBALS['TYPO3_DB']->cleanIntArray($todo)).') AND tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.pid='.intval($this->conf['pages']).$where.tx_dlf_helper::whereClause('tx_dlf_collections'),
'tx_dlf_documents.uid',
'tx_dlf_documents.tstamp',
$this->conf['limit']
);
while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
$header = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'header');
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'identifier', htmlspecialchars($resArray['record_id'], ENT_NOQUOTES, 'UTF-8')));
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'datestamp', gmdate('Y-m-d\TH:i:s\Z', $resArray['tstamp'])));
// Check if document is deleted or hidden.
// TODO: Use TYPO3 API functions here!
if ($resArray['deleted'] || $resArray['hidden']) {
// Add "deleted" status.
$header->setAttribute('status', 'deleted');
} else {
// Add sets.
foreach (explode(' ', $resArray['collections']) as $_spec) {
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setSpec', htmlspecialchars($_spec, ENT_NOQUOTES, 'UTF-8')));
}
}
$ListIdentifiers->appendChild($header);
}
if (!$complete) {
// Save result set as list object.
$resultSet = t3lib_div::makeInstance('tx_dlf_list');
$resultSet->reset();
$resultSet->add($results);
// Save result set to database and generate resumption token.
$token = uniqid();
$resultSet->metadata = array (
'offset' => intval($this->conf['limit']),
'metadataPrefix' => $this->piVars['metadataPrefix'],
);
$_result = $GLOBALS['TYPO3_DB']->exec_INSERTquery(
'tx_dlf_tokens',
array (
'tstamp' => $GLOBALS['EXEC_TIME'],
'token' => $token,
'options' => serialize($resultSet),
'ident' => 'oai',
)
);
if ($GLOBALS['TYPO3_DB']->sql_affected_rows($_result) == 1) {
$resumptionToken = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'resumptionToken', htmlspecialchars($token, ENT_NOQUOTES, 'UTF-8'));
$resumptionToken->setAttribute('cursor', '0');
$resumptionToken->setAttribute('completeListSize', $resultSet->count);
$ListIdentifiers->appendChild($resumptionToken);
} else {
trigger_error('Could not create resumption token', E_USER_ERROR);
}
}
return $ListIdentifiers;
}
}
/**
* Process verb "ListMetadataFormats"
*
* @access protected
*
* @return DOMElement XML node to add to the OAI response
*/
protected function verbListMetadataFormats() {
$resArray = array ();
// Check for invalid arguments.
if (count($this->piVars) > 1) {
if (empty($this->piVars['identifier']) || count($this->piVars) > 2) {
return $this->error('badArgument');
} else {
// Check given identifier.
$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
'tx_dlf_documents.*',
'tx_dlf_documents',
'tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_documents.record_id='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->piVars['identifier'], 'tx_dlf_documents'),
'',
'',
'1'
);
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
return $this->error('idDoesNotExist');
} else {
$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
}
}
}
// Add metadata formats node.
$ListMetadaFormats = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'ListMetadataFormats');
foreach ($this->formats as $prefix => $details) {
// Check for required fields.
if (!empty($resArray)) {
foreach ($details['requiredFields'] as $required) {
if (empty($resArray[$required])) {
// Skip metadata formats whose requirements are not met.
continue 2;
}
}
}
// Add format node.
$format = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadataFormat');
$format->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadataPrefix', htmlspecialchars($prefix, ENT_NOQUOTES, 'UTF-8')));
$format->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'schema', htmlspecialchars($details['schema'], ENT_NOQUOTES, 'UTF-8')));
$format->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadataNamespace', htmlspecialchars($details['namespace'], ENT_NOQUOTES, 'UTF-8')));
$ListMetadaFormats->appendChild($format);
}
return $ListMetadaFormats;
}
/**
* Process verb "ListRecords"
*
* @access protected
*
* @return string Substitution for subpart "###RESPONSE###"
*/
protected function verbListRecords() {
// Check for invalid arguments.
if (!empty($this->piVars['resumptionToken'])) {
// "resumptionToken" is an exclusive argument.
if (count($this->piVars) > 2) {
return $this->error('badArgument');
} else {
return $this->resume();
}
} elseif (empty($this->piVars['metadataPrefix']) || !empty($this->piVars['identifier'])) {
// "metadataPrefix" is required and "identifier" is not allowed.
return $this->error('badArgument');
} else {
$where = '';
// Check "metadataPrefix" for valid value.
if (!in_array($this->piVars['metadataPrefix'], array_keys($this->formats))) {
return $this->error('cannotDisseminateFormat');
} else {
// Check for required fields.
foreach ($this->formats[$this->piVars['metadataPrefix']]['requiredFields'] as $required) {
$where .= ' AND NOT tx_dlf_documents.'.$required.'=""';
}
}
// Check "set" for valid value.
if (!empty($this->piVars['set'])) {
// Get set information.
$_additionalWhere = '';
if (!$this->conf['show_userdefined']) {
$_additionalWhere = ' AND tx_dlf_collections.fe_cruser_id=0';
}
$_result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
'tx_dlf_collections.uid AS uid',
'tx_dlf_collections',
'tx_dlf_collections.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.oai_name='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->piVars['set'], 'tx_dlf_collections').$_additionalWhere.tx_dlf_helper::whereClause('tx_dlf_collections'),
'',
'',
'1'
);
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($_result)) {
return $this->error('noSetHierarchy');
} else {
$_resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($_result);
$where .= ' AND tx_dlf_collections.uid='.intval($_resArray['uid']);
}
}
// Check "from" for valid value.
if (!empty($this->piVars['from'])) {
if (is_array($_from = strptime($this->piVars['from'], '%Y-%m-%dT%H:%M:%SZ')) || is_array($_from = strptime($this->piVars['from'], '%Y-%m-%d'))) {
$_from = gmmktime($_from['tm_hour'], $_from['tm_min'], $_from['tm_sec'], $_from['tm_mon'] + 1, $_from['tm_mday'], $_from['tm_year'] + 1900);
} else {
return $this->error('badArgument');
}
$where .= ' AND tx_dlf_documents.tstamp>='.intval($_from);
}
// Check "until" for valid value.
if (!empty($this->piVars['until'])) {
if (is_array($_until = strptime($this->piVars['until'], '%Y-%m-%dT%H:%M:%SZ')) || is_array($_until = strptime($this->piVars['until'], '%Y-%m-%d'))) {
$_until = gmmktime($_until['tm_hour'], $_until['tm_min'], $_until['tm_sec'], $_until['tm_mon'] + 1, $_until['tm_mday'], $_until['tm_year'] + 1900);
} else {
return $this->error('badArgument');
}
if (!empty($_from) && $_from > $_until) {
return $this->error('badArgument');
}
$where .= ' AND tx_dlf_documents.tstamp<='.intval($_until);
}
// Check "from" and "until" for same granularity.
if (!empty($this->piVars['from']) && !empty($this->piVars['until'])) {
if (strlen($this->piVars['from']) != strlen($this->piVars['until'])) {
return $this->error('badArgument');
}
}
}
// Select records from database.
if (!$this->conf['show_userdefined']) {
$where .= ' AND tx_dlf_collections.fe_cruser_id=0';
}
$result = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
'tx_dlf_documents.uid',
'tx_dlf_documents',
'tx_dlf_relations',
'tx_dlf_collections',
'AND tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.pid='.intval($this->conf['pages']).$where.tx_dlf_helper::whereClause('tx_dlf_collections'),
'tx_dlf_documents.uid',
'tx_dlf_documents.tstamp',
''
);
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
return $this->error('noRecordsMatch');
} else {
// Build result set.
$results = array ();
while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
// Save only UIDs for resumption token.
$results[] = array ('uid' => $resArray['uid']);
}
$complete = FALSE;
$todo = array ();
$ListRecords = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'ListRecords');
for ($i = 0, $j = intval($this->conf['limit']); $i < $j; $i++) {
$todo[] = $results[$i]['uid'];
if (empty($results[$i + 1])) {
$complete = TRUE;
break;
}
}
$result = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
'tx_dlf_documents.*,GROUP_CONCAT(DISTINCT tx_dlf_collections.oai_name ORDER BY tx_dlf_collections.oai_name SEPARATOR " ") AS collections',
'tx_dlf_documents',
'tx_dlf_relations',
'tx_dlf_collections',
'AND tx_dlf_documents.uid IN ('.implode(',', $GLOBALS['TYPO3_DB']->cleanIntArray($todo)).') AND tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.pid='.intval($this->conf['pages']).$where.tx_dlf_helper::whereClause('tx_dlf_collections'),
'tx_dlf_documents.uid',
'tx_dlf_documents.tstamp',
$this->conf['limit']
);
while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
// Add record node.
$record = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'record');
// Add header node.
$header = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'header');
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'identifier', htmlspecialchars($resArray['record_id'], ENT_NOQUOTES, 'UTF-8')));
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'datestamp', gmdate('Y-m-d\TH:i:s\Z', $resArray['tstamp'])));
// Check if document is deleted or hidden.
// TODO: Use TYPO3 API functions here!
if ($resArray['deleted'] || $resArray['hidden']) {
// Add "deleted" status.
$header->setAttribute('status', 'deleted');
$record->appendChild($header);
} else {
// Add sets.
foreach (explode(' ', $resArray['collections']) as $_spec) {
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setSpec', htmlspecialchars($_spec, ENT_NOQUOTES, 'UTF-8')));
}
$record->appendChild($header);
// Add metadata node.
$metadata = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadata');
switch ($this->piVars['metadataPrefix']) {
case 'oai_dc':
$metadata->appendChild($this->getDcData($resArray));
break;
case 'epicur':
$metadata->appendChild($this->getEpicurData($resArray));
break;
case 'mets':
$metadata->appendChild($this->getMetsData($resArray));
break;
}
$record->appendChild($metadata);
}
$ListRecords->appendChild($record);
}
if (!$complete) {
// Save result set as list object.
$resultSet = t3lib_div::makeInstance('tx_dlf_list');
$resultSet->reset();
$resultSet->add($results);
// Save result set to database and generate resumption token.
$token = uniqid();
$resultSet->metadata = array (
'offset' => intval($this->conf['limit']),
'metadataPrefix' => $this->piVars['metadataPrefix'],
);
$_result = $GLOBALS['TYPO3_DB']->exec_INSERTquery(
'tx_dlf_tokens',
array (
'tstamp' => $GLOBALS['EXEC_TIME'],
'token' => $token,
'options' => serialize($resultSet),
'ident' => 'oai',
)
);
if ($GLOBALS['TYPO3_DB']->sql_affected_rows($_result) == 1) {
$resumptionToken = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'resumptionToken', htmlspecialchars($token, ENT_NOQUOTES, 'UTF-8'));
$resumptionToken->setAttribute('cursor', '0');
$resumptionToken->setAttribute('completeListSize', $resultSet->count);
$ListRecords->appendChild($resumptionToken);
} else {
trigger_error('Could not create resumption token', E_USER_ERROR);
}
}
return $ListRecords;
}
}
/**
* Process verb "ListSets"
*
* @access protected
*
* @return string Substitution for subpart "###RESPONSE###"
*/
protected function verbListSets() {
// Check for invalid arguments.
if (count($this->piVars) > 1) {
if (!empty($this->piVars['resumptionToken'])) {
return $this->error('badResumptionToken');
} else {
return $this->error('badArgument');
}
}
// Get set information.
$additionalWhere = '';
if (!$this->conf['show_userdefined']) {
$additionalWhere = ' AND tx_dlf_collections.fe_cruser_id=0';
}
$_result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
'tx_dlf_collections.oai_name AS oai_name,tx_dlf_collections.label AS label',
'tx_dlf_collections',
'tx_dlf_collections.sys_language_uid IN (-1,0) AND tx_dlf_collections.pid='.intval($this->conf['pages']).$additionalWhere.tx_dlf_helper::whereClause('tx_dlf_collections'),
'tx_dlf_collections.oai_name',
'tx_dlf_collections.oai_name',
''
);
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($_result)) {
return $this->error('noSetHierarchy');
}
// Add set list node.
$ListSets = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'ListSets');
while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($_result)) {
// Add set node.
$set = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'set');
$set->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setSpec', htmlspecialchars($resArray['oai_name'], ENT_NOQUOTES, 'UTF-8')));
$set->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setName', htmlspecialchars($resArray['label'], ENT_NOQUOTES, 'UTF-8')));
$ListSets->appendChild($set);
}
return $ListSets;
}
}
if (defined('TYPO3_MODE') && $TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/dlf/plugins/oai/class.tx_dlf_oai.php']) {
include_once($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/dlf/plugins/oai/class.tx_dlf_oai.php']);
}
?>
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