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FedoraClient.class
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<?php
// $Id$
/**
* @file
*
* PHP methods for invoking Fedora REST application programming interfaces
*/
class FedoraClient {
// REST endpoints...these should work for most Fedora installs,
// but can be overridden by set methods
protected $API_REST = '/objects';
protected $RISEARCH_REST = '/risearch';
// Fedora server connection parameters (set in constructor)
protected $server=NULL;
protected $usernm=NULL;
protected $userpw=NULL;
protected $version=NULL;
// Handle REST API version differences
public $API_EXPERIMENTAL = array('3.0' => 1, '3.1' => 1);
public $API_BETA = array('3.2' => 1, '3.3' => 1);
public $API_FINAL = array( );
// Session object for API list methods
protected $session=NULL;
/**
* Class constructor :: set up parameters to connect to repository
*
*/
public function __construct($svr = 'http://localhost:8080/fedora',
$nm = 'fedoraAdmin', $pw = 'fedoraAdmin',
$version = '3.3')
{
// initialize class variables
$this->server = $svr;
$this->usernm = $nm;
$this->userpw = $pw;
$this->version = $version;
}
public function getServer()
{
return $this->server;
}
public function getSession()
{
return $this->session;
}
public function setServer( $svr )
{
$this->server = $svr;
}
public function setUser( $nm, $pw )
{
$this->usernm = $nm;
$this->userpw = $pw;
}
public function setVersion( $version )
{
$this->version = $version;
}
public function setApiEndpoint( $ep )
{
$this->API_REST = $ep;
}
public function setRIsearchEndpoint( $ep )
{
$this->RISEARCH_REST = $ep;
}
/** METHODS TO ACCESS THE REST API-A **/
/**
* Invoke the API-A findObjects web service
*
* @return array of SimpleXMLElement objects
*/
public function findObjects($args=array())
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST . '?pid=true&';
if (isset($this->API_EXPERIMENTAL[$this->version])) {
$query .= 'format=xml';
} else {
$query .= 'resultFormat=xml';
}
foreach( $args as $parm => $value ) {
if ($parm != 'pid') {
$query .= '&' . urlencode($parm) . '=' . urlencode($value);
}
}
try {
$result = $this->getRestXML($query);
} catch (Exception $e) {
restore_error_handler();
// re-throw it to the invoker
throw $e;
}
if (isset($result->listSession)) {
$this->session = $result->listSession;
} else {
$this->session = NULL;
}
$sxeList = array();
foreach($result->resultList->objectFields as $node) {
// why the key has to be cast? ...otherwise get illegal offset
$sxeList[(string)$node->pid] = $node;
}
restore_error_handler();
return $sxeList;
}
/**
* Invoke the API-A getDatastreamDissemination web service
*
* @return SimpleXMLElement object or binary data
*/
public function getDatastreamDissemination( $pid,$dsID,$binary=FALSE,
$asOfDateTime=NULL )
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST . "/$pid/datastreams/$dsID";
if (! isset($this->API_EXPERIMENTAL[$this->version])) {
$query .= '/content';
}
if (isset($asOfDateTime)) {
$query .= '?asOfDateTime=' . urlencode($asOfDateTime);
}
try {
if ($binary) {
$data = $this->getRestBinary($query);
restore_error_handler();
return $data;
}
$sxe = $this->getRestXML($query);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $sxe;
}
/**
* Invoke the API-A getDissemination web service
*
* @return SimpleXMLElement object or binary data
*/
public function getDissemination( $pid, $sdefPid, $method, $binary=FALSE )
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST
. "/$pid/methods/$sdefPid/$method";
try {
if ($binary) {
$data = $this->getRestBinary($query);
restore_error_handler();
return $data;
}
$sxe = $this->getRestXML($query);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $sxe;
}
/**
* Invoke a web service to retrieve an XML dissemination
*
* @return SimpleXMLElement object
*/
public function getXMLDissemination( $pid, $service )
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST . "/$pid/$service";
try {
$sxe = $this->getRestXML($query);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $sxe;
}
/**
* Invoke the API-A getObjectHistory web service
*
* @return array of SimpleXMLElement objects
*/
public function getObjectHistory($pid)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST . "/$pid/versions?format=xml";
try {
$fedoraObjectHistory = $this->getRestXML($query);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
$sxeList = array();
foreach($fedoraObjectHistory->objectChangeDate as $date) {
$sxeList[(string)$date] = $date;
}
restore_error_handler();
return $sxeList;
}
/**
* Invoke the API-A getObjectProfile web service
*
* @return SimpleXMLElement object
*/
public function getObjectProfile($pid)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST . "/$pid?format=xml";
try {
$sxe = $this->getRestXML($query);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $sxe;
}
/**
* Invoke the API-A listDatastreams web service
*
* @return array of SimpleXMLElement objects
*/
public function listDatastreams($pid,$asOfDateTime=NULL)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST."/$pid/datastreams?format=xml";
if (isset($asOfDateTime)) {
$query .= '&asOfDateTime=' . urlencode($asOfDateTime);
}
try {
$objectDatastreams = $this->getRestXML($query);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
$sxeList = array();
foreach($objectDatastreams->datastream as $ds) {
if (isset($ds['dsid'])) {
$sxeList[(string)$ds['dsid']] = $ds;
}
}
restore_error_handler();
return $sxeList;
}
/**
* Invoke the API-A listMethods web service
*
* @return array of SimpleXMLElement objects
*/
public function listMethods($pid, $asOfDateTime=NULL)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST . "/$pid/methods?format=xml";
if (isset($asOfDateTime)) {
$query .= '&asOfDateTime=' . urlencode($asOfDateTime);
}
try {
$objectMethods = $this->getRestXML($query);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
$sxeList = array();
foreach($objectMethods->sDef->method as $method) {
if (isset($method['name'])) {
$sxeList[(string)$method['name']] = $method;
}
}
restore_error_handler();
return $sxeList;
}
/**
* Invoke the API-A resumeFindObjects web service
*
* @return array of SimpleXMLElement objects
*/
public function resumeFindObjects($args=array())
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
if (isset($this->session)) {
$args['sessionToken'] = $this->session->token;
restore_error_handler();
return $this->findObjects($args);
} else {
throw new Exception('No session token for resumeFindObjects()!');
}
restore_error_handler();
return $sxeList;
}
/** METHODS TO ACCESS THE REST API-M **/
/**
* Invoke the API-M addDatastream web service
*
* @return SimpleXMLElement object
*/
public function addDatastream($pid, $dsID, $args=array(),
$managedFile=NULL, $inlineXML=NULL)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->API_REST . "/$pid/datastreams/$dsID";
$fields = '';
foreach( $args as $parm => $value ) {
if ($fields) $fields .= '&';
$fields .= "$parm=$value";
}
if ($fields) $url .= '?'.$fields;
if (isset($managedFile)) {
$fields = array();
$fields[basename($managedFile)]="@$managedFile";
} elseif (isset($inlineXML)) {
// ** NOT TESTED **
$fields = $inlineXML;
}
try {
//$resp = $this->postRestXML($url, $fields, TRUE);
$resp = $this->postRestFile($url, $fields, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $resp;
}
/**
* Invoke the API-M getObjectXML web service
*
* @return SimpleXMLElement object
*/
public function getObjectXML($pid)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST . "/$pid/objectXML";
try {
$sxe = $this->getRestXML($query, TRUE);
//$sxe = $this->getRestBinary($query, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $sxe;
}
/**
* Invoke the API-M getNextPID web service
*
* @return SimpleXMLElement object
*/
public function getNextPID($ns=NULL, $num=1)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST . "/nextPID?format=xml";
if (isset($num)) {
$query .= '&numPIDs=' . urlencode($num);
}
if (isset($ns)) {
$query .= '&namespace=' . urlencode($ns);
}
try {
$sxe = $this->postRestXML($query, NULL, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $sxe;
}
/**
* Invoke the API-M getDatastream web service
*
* @return String filepath
*/
public function getDatastream( $pid, $dsID, $format='html',
$validateChecksum=NULL, $asOfDateTime=NULL )
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST
. "/$pid/datastreams/$dsID?format=$format";
if (isset($validateChecksum)) {
$query .= '&validateChecksum=' . urlencode($validateChecksum);
}
if (isset($asOfDateTime)) {
$query .= '&asOfDateTime=' . urlencode($asOfDateTime);
}
try {
$filepath = $pid . $dsID . ".$format";
$this->getRestFile($query, $filepath, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $filepath;
}
/**
* Invoke the API-M export web service
*
* @return String filepath
*/
public function export( $pid, $format=NULL, $context=NULL, $encoding=NULL )
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$query = $this->server . $this->API_REST . "/$pid/export";
$fields = '';
if (isset($format)) {
if ($fields) $fields .= '&';
$fields .= '&format=' . urlencode($format);
}
if (isset($context)) {
if ($fields) $fields .= '&';
$fields .= '&context=' . urlencode($context);
}
if (isset($encoding)) {
if ($fields) $fields .= '&';
$fields .= '&encoding=' . urlencode($encoding);
}
$query .= '?'.$fields;
try {
// Do we need an extension for atom formats?
$filepath = "$pid.xml";
$this->getRestFile($query, $filepath, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $filepath;
}
/**
* Invoke the API-M ingest web service
*
* @return SimpleXMLElement object
*/
public function ingest($pid='new', $args=array(), $object=NULL)
{
// ** NOT TESTED **
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->API_REST . "/$pid";
$fields = '';
foreach( $args as $parm => $value ) {
if ($fields) $fields .= '&';
$fields .= "$parm=$value";
}
$url .= '?'.$fields;
try {
$resp = $this->postRestXML($url, $object, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $resp;
}
/**
* Invoke the API-M modifyDatastream web service
*
* @return SimpleXMLElement object
*/
public function modifyDatastream($pid, $dsID, $args=array(),
$modifiedFile=NULL, $curlWorkaround=NULL)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->API_REST . "/$pid/datastreams/$dsID";
$mimeType = 'text/xml';
$fields = '';
foreach( $args as $parm => $value ) {
if ($fields) $fields .= '&';
$fields .= "$parm=$value";
if ($parm == 'mimeType') $mimeType = $value;
}
if ($fields) {
$url .= '?'.$fields;
}
try {
if (isset($curlWorkaround) ||
isset($this->API_EXPERIMENTAL[$this->version]))
{
$resp = $this->postRestFileWorkaround($url, $modifiedFile, TRUE,
$mimeType, $curlWorkaround);
} else {
$fields = array();
$fields[basename($modifiedFile)]="@$modifiedFile";
$resp = $this->postRestFile($url, $fields, TRUE);
}
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $resp;
}
/**
* Invoke the API-M modifyObject web service
*
* @return SimpleXMLElement object
*/
public function modifyObject($pid, $args=array())
{
// ** NOT TESTED **
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->API_REST . "/$pid";
$fields = '';
foreach( $args as $parm => $value ) {
if ($fields) $fields .= '&';
$fields .= "$parm=$value";
}
if ($fields) {
$url .= '?'.$fields;
}
try {
$resp = $this->putRestFile($url, NULL, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $resp;
}
/**
* Invoke the API-M purgeDatastream web service
*
* @return SimpleXMLElement object
*/
public function purgeDatastream($pid, $dsID, $args=array())
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->API_REST . "/$pid/datastreams/$dsID";
$fields = '';
foreach( $args as $parm => $value ) {
if ($fields) $fields .= '&';
$fields .= "$parm=$value";
}
if ($fields) {
$url .= '?'.$fields;
}
try {
$resp = $this->deleteRest($url, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $resp;
}
/**
* Invoke the API-M purgeObject web service
*
* @return SimpleXMLElement object
*/
public function purgeObject($pid, $args=array())
{
// ** NOT TESTED **
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->API_REST . "/$pid";
$fields = '';
foreach( $args as $parm => $value ) {
if ($fields) $fields .= '&';
$fields .= "$parm=$value";
}
if ($fields) {
$url .= '?'.$fields;
}
try {
$resp = $this->deleteRest($url, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $resp;
}
/**
* Invoke the API-M setDatastreamState web service
*
* @return SimpleXMLElement object
*/
public function setDatastreamState($pid, $dsID, $dsState='A')
{
// ** NOT TESTED **
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->API_REST
. "/$pid/datastreams/$dsID?dsState=$dsState";
try {
$resp = $this->putRestFile($url, NULL, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $resp;
}
/**
* Invoke the API-M setDatastreamVersionable web service
*
* @return SimpleXMLElement object
*/
public function setDatastreamVersionable($pid, $dsID, $versionable='true')
{
// ** NOT TESTED **
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->API_REST
. "/$pid/datastreams/$dsID?versionable=$versionable";
try {
$resp = $this->putRestFile($url, NULL, TRUE);
} catch (Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
return $resp;
}
/** METHODS TO ACCESS THE Resource Index Search API **/
/**
* Invoke the SPO RISearch web service
*
* @return array of SimpleXMLElement objects
*/
public function findTriples($query, $limit=10)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->RISEARCH_REST;
$fields = 'type=triples&lang=spo&format='.urlencode('RDF/XML')
. '&query='.urlencode($query);
if ($limit) {
$fields .= "&limit=$limit";
}
try {
$result = $this->postRestXML($url, $fields);
} catch (Exception $e) {
restore_error_handler();
// re-throw it to the invoker
throw $e;
}
// I can index this array with the unique URI because Mulgara will
// combine all assertions about a subject into one rdf:Description
$ns = $result->getNamespaces(false);
$sxeList = array();
foreach($result->xpath('rdf:Description') as $sxe) {
$attrs = $sxe->attributes($ns['rdf']);
$sxeList[(string)$attrs->about] = $sxe;
}
restore_error_handler();
return $sxeList;
}
/**
* Invoke the iTQL RISearch web service
*
* @return array of SimpleXMLElement objects
*/
public function findTuples($query, $limit=10)
{
// make sure that any errors are handled by throwing an exception
set_error_handler(array(&$this, 'fedoraClientErrorHandler'));
$url = $this->server . $this->RISEARCH_REST;
$fields = 'type=tuples&lang=itql&format=Sparql'
. '&query='.urlencode($query);
if ($limit) {
$fields .= "&limit=$limit";
}
try {
$sparql = $this->postRestXML($url, $fields);
} catch (Exception $e) {
restore_error_handler();
// re-throw it to the invoker
throw $e;
}
$sxeList = array();
foreach($sparql->results->result as $sxe) {
$sxeList[] = $sxe;
}
restore_error_handler();
return $sxeList;
}
/** PRIVATE UTILITY FUNCTIONS **/
/**
* for cURL lib usage see:
* http://curl.haxx.se/libcurl/php/examples/
* http://www.php.net/manual/en/book.curl.php
*/
/**
* send a GET request to the REST API, expect XML back
*/
protected function getRestXML($request, $auth=FALSE)
{
$get = curl_init( $request );
curl_setopt($get, CURLOPT_HEADER, 0);
curl_setopt($get, CURLOPT_RETURNTRANSFER, 1);
if ($auth) {
curl_setopt($get, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($get, CURLOPT_USERPWD, $this->usernm.':'.$this->userpw);
curl_setopt($get, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($get, CURLOPT_SSL_VERIFYHOST, FALSE);
}
$response = curl_exec($get);
$info = curl_getinfo($get);
curl_close($get);
// Check HTTP/S response
if ((!isset($info['http_code'])) ||
$info['http_code'] < 200 || $info['http_code'] > 299)
{
throw new Exception("Unsuccessful request-->$response<--",
( isset($info['http_code']) )? $info['http_code'] : 0);
}
if ( ! (isset($info['content_type']) &&
$this->isXMLContentType($info['content_type'])) )
{
throw new Exception('Unexpected response='.$info['content_type']
."-->$response<--", $info['http_code']);
}
// DON'T work (if remote DTD specified):
// return new SimpleXMLElement($response);
// Note that without LIBXML_DTDLOAD we would get the SAME error as
// with SimpleXMl (but thrown by the DOM library)
// i.e. LIBXML_DTDLOAD is required to force DOM to load the DTD,
// luckily the DTD does not have to be local.
$dom = new DOMDocument();
$dom->loadXML($response, LIBXML_DTDLOAD);
return simplexml_import_dom($dom);
}
/**
* send a GET request to the REST API, expect binary back
*/
protected function getRestBinary($request, $auth=FALSE)
{
$get = curl_init( $request );
curl_setopt($get, CURLOPT_HEADER, 0);
curl_setopt($get, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($get, CURLOPT_BINARYTRANSFER, 1);
if ($auth) {
curl_setopt($get, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($get, CURLOPT_USERPWD, $this->usernm.':'.$this->userpw);
curl_setopt($get, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($get, CURLOPT_SSL_VERIFYHOST, FALSE);
}
$data = curl_exec($get);
$info = curl_getinfo($get);
curl_close($get);
// Check HTTP/S response
if ((!isset($info['http_code'])) ||
$info['http_code'] < 200 || $info['http_code'] > 299)
{
throw new Exception('Unsuccessful request',
( isset($info['http_code']) )? $info['http_code'] : 0);
}
return $data;
}
/**
* send a GET request to the REST API, store response in a file
*/
protected function getRestFile($request, $filepath, $auth=FALSE)
{
$fp = fopen($filepath, "w");
$get = curl_init( $request );
curl_setopt($get, CURLOPT_HEADER, 0);
curl_setopt($get, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($get, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($get, CURLOPT_FILE, $fp);
if ($auth) {
curl_setopt($get, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($get, CURLOPT_USERPWD, $this->usernm.':'.$this->userpw);
curl_setopt($get, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($get, CURLOPT_SSL_VERIFYHOST, FALSE);
}
$response = curl_exec($get);
$info = curl_getinfo($get);
curl_close($get);
// Check HTTP/S response
if ((!isset($info['http_code'])) ||
$info['http_code'] < 200 || $info['http_code'] > 299)
{
throw new Exception("Unsuccessful request-->$response<--",
( isset($info['http_code']) )? $info['http_code'] : 0);
}
return $response;
}
/**
* send a POST request to the REST API, expect XML back
*/
protected function postRestXML($url, $fields, $auth=FALSE)
{
$post = curl_init($url);
curl_setopt($post, CURLOPT_HEADER, 0);
curl_setopt($post, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($post, CURLOPT_POST, 1);
if (isset($fields)) curl_setopt($post, CURLOPT_POSTFIELDS, $fields);
if ($auth) {
curl_setopt($post,CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($post,CURLOPT_USERPWD, $this->usernm.':'.$this->userpw);
curl_setopt($post,CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($post,CURLOPT_SSL_VERIFYHOST, FALSE);
}
$response = curl_exec($post);
$info = curl_getinfo($post);
curl_close($post);
// Check HTTP/S response
if ((!isset($info['http_code'])) ||
$info['http_code'] < 200 || $info['http_code'] > 299)
{
throw new Exception("Unsuccessful request-->$response<--",
( isset($info['http_code']) )? $info['http_code'] : 0);
}
if ( ! (isset($info['content_type']) &&
$this->isXMLContentType($info['content_type'])) )
{
throw new Exception('Unexpected response='.$info['content_type']
."-->$response<--", $info['http_code']);
}
return new SimpleXMLElement($response);
}
/**
* send a POST FILE request to the REST API
*/
protected function postRestFile($url, $fields, $auth=FALSE)
{
$post = curl_init($url);
curl_setopt($post, CURLOPT_HEADER, 0);