/**
* Check if we can understand the message
*
* @param string $msg The message
*
* @param CInteropActor $actor The actor
*
* @param array $pres_contexts The presentation contexts
*
* @return boolean
*/
function understand($msg, CInteropActor $actor = null, $pres_contexts = null)
{
$this->_presentation_contexts = $pres_contexts;
if (!$this->isWellFormed($msg)) {
return false;
}
$pdu = CDicomPDUFactory::decodePDU($msg, $this->_presentation_contexts);
$pdvs = $pdu->getPDVs();
$msg_types = array();
$msg_classes = array();
foreach ($pdvs as $pdv) {
$msg = $pdv->getMessage();
$msg_types[] = $msg->type;
$msg_classes[] = get_class($msg);
}
if ($msg_types[0] == "C-Find-RQ" || $msg_types[0] == "C-Echo-RQ") {
if (!$this->_requests) {
$this->_requests = array();
}
$this->_requests[] = $pdu;
} elseif ($msg_types[0] == "C-Echo-RSP" || $msg_types[0] == "C-Find-RSP") {
if (!$this->_responses) {
$this->_responses = array();
}
$this->_responses[] = $pdu;
} elseif ($msg_types[0] == "Datas") {
if ($this->_responses) {
$this->_responses[] = $pdu;
} else {
$this->_requests[] = $pdu;
}
}
foreach ($this->getFamily() as $_family) {
$family_class = new $_family();
$events = $family_class->getEvenements();
if (array_key_exists($msg_types[0], $events)) {
$this->_family_message_class = $_family;
$this->_family_message = $msg_classes[0];
$this->message_valide = 1;
return true;
}
}
return false;
}
/**
* The action AA-8
*
* @param mixed $datas The datas
*
* @return string
*
* @see DICOM Standard PS 3.8 Section 9.2
*/
protected function doAA8($datas)
{
$diagnostic = 0;
if ($datas && is_integer($datas)) {
$diagnostic = $datas;
}
$pdu = CDicomPDUFactory::encodePDU("07", array("source" => 2, "diagnostic" => $diagnostic));
$this->addMessage($pdu->type_str, $pdu);
$this->status = "Aborted";
$this->state = self::STA13;
return $pdu->getPacket();
}
/**
* 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);
}
}