/**
* Handle a C-Data message, and return the answer
*
* @param CDicomPDV $find_rq_pdv The PDV who contains the C-Find-RQ message
* @param CDicomPDV $find_data_pdv The PDV who contains the C-Find-Data message
* @param CExchangeDicom $dicom_exchange The Exchange Dicom
*
* @todo Le code est spécifique à la Source, il faudrait le rendre générique
*
* @return array
*/
protected static function handleCDatas($find_rq_pdv, $find_data_pdv, $dicom_exchange)
{
$msg_rq = $find_rq_pdv->getMessage();
$msg_data = $find_data_pdv->getMessage();
/** If the message is a request : **/
if (is_null($dicom_exchange->_responses)) {
$requested_datas = $msg_data->getRequestedDatas();
$sender = $dicom_exchange->loadRefSender();
if (!$sender->_id) {
return array("event" => "AAbort_Prepared", "datas" => 5);
}
/* Loading the objects linked to the Dicom sender */
$linked_objects = CObjectToInteropSender::loadAllObjectsFor($sender->_id);
$find_rsp_pending_datas = array("PDVs" => array(array("pres_context_id" => $find_data_pdv->getPresContextId(), "message_control_header" => 0x3, "message" => array("type" => 0x8020, "datas" => array("affected_sop_class" => $msg_rq->getAffectedSopClass()->getValue(), "command_field" => 0x8020, "message_id_request" => $msg_rq->getMessageId()->getValue(), "command_data_set" => 0xfefe, "status" => 0xff00)))));
/* Encoding the PDU that separate the patients data */
$find_rsp_pending = CDicomPDUFactory::encodePDU(0x4, $find_rsp_pending_datas, $dicom_exchange->_presentation_contexts);
$calling_ae_title = self::getRequestedAETitle($requested_datas);
$modality = self::getRequestedModality($requested_datas, $dicom_exchange);
/** Getting the requested encoding **/
$encoding = null;
$rq_datasets = $find_data_pdv->getMessage()->getDatasets();
if (isset($rq_datasets[0x8][0x5])) {
$encoding_dataset = $rq_datasets[0x8][0x5];
$encoding = $encoding_dataset->getValue();
}
$responses = array();
/* Loading the objects (CSejour or COperation) from the linked objects */
$objects = self::loadObjectsFromLinkedObjects($linked_objects);
if ($objects) {
foreach ($objects as $_object) {
$responses[] = $find_rsp_pending;
$find_rsp_datas = array("PDVs" => array(array("pres_context_id" => $find_data_pdv->getPresContextId(), "message_control_header" => 0x2, "message" => array("type" => "data", "datas" => self::getDataFromObject($_object, $encoding, $modality, $calling_ae_title, $dicom_exchange->getConfigs())))));
$responses[] = CDicomPDUFactory::encodePDU(0x4, $find_rsp_datas, $dicom_exchange->_presentation_contexts);
}
}
$find_rsp_success_datas = array("PDVs" => array(array("pres_context_id" => $find_data_pdv->getPresContextId(), "message_control_header" => 0x3, "message" => array("type" => 0x8020, "datas" => array("affected_sop_class" => $msg_rq->getAffectedSopClass()->getValue(), "command_field" => 0x8020, "message_id_request" => $msg_rq->getMessageId()->getValue(), "command_data_set" => 0x101, "status" => 0x0)))));
$responses[] = CDicomPDUFactory::encodePDU(0x4, $find_rsp_success_datas, $dicom_exchange->_presentation_contexts);
if (!$dicom_exchange->_responses) {
$dicom_exchange->_responses = $responses;
} else {
array_merge($dicom_exchange->_responses, $responses);
}
return array("event" => "PDataTF_Prepared", "datas" => $responses);
} else {
/** The message is a response : **/
return array("event" => "AAbort_Prepared", "datas" => 5);
}
}
/**
* Decode the PDU
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return null
*/
function decodePDU(CDicomStreamReader $stream_reader)
{
$this->pdvs = array();
$stream_reader->setStreamLength($this->getTotalLength());
while ($stream_reader->getPos() < $stream_reader->getStreamLength()) {
$pdv_length = $stream_reader->readUInt32();
// + 4;
//$stream_reader->seek(-4);
$pdv_content = $stream_reader->read($pdv_length);
$pdv_handle = fopen('php://temp', 'w+');
fwrite($pdv_handle, $pdv_content, $pdv_length);
$pdv_stream = new CDicomStreamReader($pdv_handle);
$pdv_stream->rewind();
$pdv = new CDicomPDV(array("presentation_contexts" => $this->presentation_contexts, "length" => $pdv_length));
$pdv->decode($pdv_stream);
$this->pdvs[] = $pdv;
}
}
