OFCondition GIL::DICOM::DCMTK::Network::DropNetwork()
{
OFCondition cond = ASC_dropNetwork(&m_pDCMTKNetwork);
m_pDCMTKNetwork = NULL;
return cond;
}
OFCondition Network::DropNetwork()
{
OFCondition cond = ASC_dropNetwork(&net);
net = NULL;
#ifdef _WIN32
WSACleanup();
#endif
return cond;
}
void DicomServer::Stop()
{
if (continue_)
{
continue_ = false;
if (pimpl_->thread_.joinable())
{
pimpl_->thread_.join();
}
pimpl_->workers_.reset(NULL);
/* drop the network, i.e. free memory of T_ASC_Network* structure. This call */
/* is the counterpart of ASC_initializeNetwork(...) which was called above. */
OFCondition cond = ASC_dropNetwork(&pimpl_->network_);
if (cond.bad())
{
LOG(ERROR) << "Error while dropping the network: " << cond.text();
}
}
}
void PACSConnection::disconnect()
{
OFCondition condition = ASC_releaseAssociation(m_dicomAssociation);
if (condition.bad())
{
ERROR_LOG("No s'ha pogut desconnectar del PACS, descripcio error: " + QString(condition.text()));
}
condition = ASC_destroyAssociation(&m_dicomAssociation);
if (condition.bad())
{
ERROR_LOG("Error al destruir la connexio amb el PACS, descripcio error: " + QString(condition.text()));
}
// Destrueix l'objecte i tanca el socket obert, fins que no es fa el drop de l'objecte no es tanca el socket
condition = ASC_dropNetwork(&m_associationNetwork);
if (condition.bad())
{
ERROR_LOG("Error al tancar el port de connexions entrants, descripcio error: " + QString(condition.text()));
}
}
void QtDcmServersDicomSettingsWidget::sendEcho()
{
if ( !treeWidget->currentItem() ) {
return;
}
QtDcmPreferences* prefs = QtDcmPreferences::instance();
const QString aet = prefs->aetitle();
const QString serverAet = treeWidget->currentItem()->data ( 1, 1 ).toString();
const QString hostname = prefs->hostname();
const QString serverHostname = treeWidget->currentItem()->data ( 3, 1 ).toString();
const QString serverPort = treeWidget->currentItem()->data ( 2, 1 ).toString();
T_ASC_Network *net = 0; // network struct, contains DICOM upper layer FSM etc.
OFCondition cond = ASC_initializeNetwork ( NET_REQUESTOR, 0, 30 /* timeout */, &net );
if ( cond != EC_Normal ) {
QMessageBox msgBox( QApplication::activeWindow() );
msgBox.setIcon ( QMessageBox::Critical );
msgBox.setText ( "Cannot initialize network" );
msgBox.exec();
ASC_dropNetwork ( &net );
return;
}
QTcpSocket * socket = new QTcpSocket(this);
socket->connectToHost(serverHostname, serverPort.toInt());
if (!socket->waitForConnected(1000)) {
QMessageBox msgBox( QApplication::activeWindow() );
msgBox.setIcon ( QMessageBox::Information );
msgBox.setText ( "Cannot connect to server " + serverHostname + " on port " + serverPort + " !" );
msgBox.exec();
ASC_dropNetwork ( &net );
return;
}
socket->disconnectFromHost();
delete socket;
T_ASC_Parameters *params; // parameters of association request
cond = ASC_createAssociationParameters ( ¶ms, ASC_DEFAULTMAXPDU );
// set calling and called AE titles
cond = ASC_setAPTitles ( params, aet.toUtf8().data(), serverAet.toUtf8().data(), NULL );
// the DICOM server accepts connections at server.nowhere.com port 104
cond = ASC_setPresentationAddresses ( params, hostname.toUtf8().data(), QString ( serverHostname + ":" + serverPort ).toLatin1().data() );
// list of transfer syntaxes, only a single entry here
const char* ts[] = { UID_LittleEndianImplicitTransferSyntax };
// add presentation context to association request
cond = ASC_addPresentationContext ( params, 1, UID_VerificationSOPClass, ts, 1 );
// request DICOM association
T_ASC_Association *assoc = 0;
if ( ASC_requestAssociation ( net, params, &assoc ).good() ) {
if ( ASC_countAcceptedPresentationContexts ( params ) == 1 ) {
// the remote SCP has accepted the Verification Service Class
DIC_US id = assoc->nextMsgID++; // generate next message ID
DIC_US status; // DIMSE status of C-ECHO-RSP will be stored here
DcmDataset *sd = NULL; // status detail will be stored here
// send C-ECHO-RQ and handle response
DIMSE_echoUser ( assoc, id, DIMSE_BLOCKING, 0, &status, &sd );
delete sd; // we don't care about status detail
QMessageBox msgBox( QApplication::activeWindow() );
msgBox.setIcon ( QMessageBox::Information );
msgBox.setText ( "Echo request successful !" );
msgBox.exec();
}
else {
QMessageBox msgBox( QApplication::activeWindow() );
msgBox.setIcon ( QMessageBox::Critical );
msgBox.setText ( "Wrong presentation context, echo request failed" );
msgBox.exec();
}
}
else {
QMessageBox msgBox( QApplication::activeWindow() );
msgBox.setIcon ( QMessageBox::Critical );
msgBox.setText ( "Wrong dicom association, echo request failed" );
msgBox.exec();
}
ASC_releaseAssociation ( assoc ); // release association
ASC_destroyAssociation ( &assoc ); // delete assoc structure
ASC_dropNetwork ( &net ); // delete net structure
net = 0;
assoc = 0;
}
bool echoscu(const QString &peerTitle, const QString &ourTitle,
const QString &hostname, int port,
QString &msg)
{
T_ASC_Network *net;
T_ASC_Parameters *params;
T_ASC_Association *assoc;
OFString temp_str;
bool ret = false;
#ifdef HAVE_WINSOCK_H
WSAData winSockData;
/* we need at least version 1.1 */
WORD winSockVersionNeeded = MAKEWORD( 1, 1 );
WSAStartup(winSockVersionNeeded, &winSockData);
#endif
/* initialize network, i.e. create an instance of T_ASC_Network*. */
OFCondition cond = ASC_initializeNetwork(NET_REQUESTOR, 0, 6, &net);
if (cond.bad()) {
DimseCondition::dump(temp_str, cond);
msg = QString::fromLatin1(temp_str.c_str());
goto cleanup;
}
/* initialize asscociation parameters, i.e. create an instance of T_ASC_Parameters*. */
cond = ASC_createAssociationParameters(¶ms, ASC_DEFAULTMAXPDU);
if (cond.bad()) {
DimseCondition::dump(temp_str, cond);
msg = QString::fromLatin1(temp_str.c_str());
goto cleanup;
}
ASC_setAPTitles(params, ourTitle.toLocal8Bit().data(), peerTitle.toLocal8Bit().data(), NULL);
/* Set the transport layer type (type of network connection) in the params */
/* strucutre. The default is an insecure connection; where OpenSSL is */
/* available the user is able to request an encrypted,secure connection. */
cond = ASC_setTransportLayerType(params, OFFalse);
if (cond.bad()) {
DimseCondition::dump(temp_str, cond);
msg = QString::fromLatin1(temp_str.c_str());
goto cleanup;
}
/* Figure out the presentation addresses and copy the */
/* corresponding values into the association parameters.*/
DIC_NODENAME localHost;
DIC_NODENAME peerHost;
gethostname(localHost, sizeof(localHost) - 1);
sprintf(peerHost, "%s:%d", hostname.toLocal8Bit().data(), port);
ASC_setPresentationAddresses(params, localHost, peerHost);
/* Set the presentation contexts which will be negotiated */
/* when the network connection will be established */
int presentationContextID = 1; /* odd byte value 1, 3, 5, .. 255 */
for (unsigned long ii=0; ii<1; ii++)
{
cond = ASC_addPresentationContext(params, presentationContextID, UID_VerificationSOPClass,
transferSyntaxes, 3);
presentationContextID += 2;
if (cond.bad())
{
DimseCondition::dump(temp_str, cond);
msg = QString::fromLatin1(temp_str.c_str());
goto cleanup;
}
}
/* create association, i.e. try to establish a network connection to another */
/* DICOM application. This call creates an instance of T_ASC_Association*. */
cond = ASC_requestAssociation(net, params, &assoc);
if (cond.bad()) {
if (cond == DUL_ASSOCIATIONREJECTED)
{
T_ASC_RejectParameters rej;
ASC_getRejectParameters(params, &rej);
ASC_printRejectParameters(temp_str, &rej);
msg = QString("Association Rejected: %1").arg(temp_str.c_str());
goto cleanup;
} else {
DimseCondition::dump(temp_str, cond);
msg = QString("Association Request Failed: %1").arg(temp_str.c_str());
goto cleanup;
}
}
/* count the presentation contexts which have been accepted by the SCP */
/* If there are none, finish the execution */
if (ASC_countAcceptedPresentationContexts(params) == 0) {
msg = QString("No Acceptable Presentation Contexts");
goto cleanup;
}
/* do the real work, i.e. send a number of C-ECHO-RQ messages to the DICOM application */
/* this application is connected with and handle corresponding C-ECHO-RSP messages. */
DIC_US msgId = assoc->nextMsgID++;
DIC_US status;
DcmDataset *statusDetail = NULL;
/* send C-ECHO-RQ and handle response */
cond = DIMSE_echoUser(assoc, msgId, DIMSE_BLOCKING, 0, &status, &statusDetail);
/* check for status detail information, there should never be any */
if (statusDetail != NULL) {
delete statusDetail;
}
/* tear down association, i.e. terminate network connection to SCP */
if (cond == EC_Normal)
{
cond = ASC_releaseAssociation(assoc);
ret = true;
}
else if (cond == DUL_PEERABORTEDASSOCIATION)
{
}
else
{
DimseCondition::dump(temp_str, cond);
msg = QString::fromLatin1(temp_str.c_str());
cond = ASC_abortAssociation(assoc);
}
cleanup:
/* destroy the association, i.e. free memory of T_ASC_Association* structure. This */
/* call is the counterpart of ASC_requestAssociation(...) which was called above. */
cond = ASC_destroyAssociation(&assoc);
/* drop the network, i.e. free memory of T_ASC_Network* structure. This call */
/* is the counterpart of ASC_initializeNetwork(...) which was called above. */
cond = ASC_dropNetwork(&net);
#ifdef HAVE_WINSOCK_H
WSACleanup();
#endif
return ret;
}
void DicomServer::ServerThread(DicomServer* server)
{
/* Disable "gethostbyaddr" (which results in memory leaks) and use raw IP addresses */
dcmDisableGethostbyaddr.set(OFTrue);
dcmDataDict.clear();
DcmDataDictionary& d = dcmDataDict.wrlock();
#if DCMTK_USE_EMBEDDED_DICTIONARIES == 1
LOG(WARNING) << "Loading the embedded dictionaries";
/**
* Do not load DICONDE dictionary, it breaks the other tags. The
* command "strace storescu 2>&1 |grep dic" shows that DICONDE
* dictionary is not loaded by storescu.
**/
//LoadEmbeddedDictionary(d, EmbeddedResources::DICTIONARY_DICONDE);
LoadEmbeddedDictionary(d, EmbeddedResources::DICTIONARY_DICOM);
LoadEmbeddedDictionary(d, EmbeddedResources::DICTIONARY_PRIVATE);
#elif defined(__linux)
std::string path = "/usr/share/dcmtk";
const char* env = std::getenv(DCM_DICT_ENVIRONMENT_VARIABLE);
if (env != NULL)
{
path = std::string(env);
}
LoadExternalDictionary(d, path, "dicom.dic");
LoadExternalDictionary(d, path, "private.dic");
#else
#error Support your platform here
#endif
dcmDataDict.unlock();
/* make sure data dictionary is loaded */
if (!dcmDataDict.isDictionaryLoaded())
{
LOG(ERROR) << "No DICOM dictionary loaded, check environment variable: " << DCM_DICT_ENVIRONMENT_VARIABLE;
throw OrthancException(ErrorCode_InternalError);
}
{
// Test the dictionary with a simple DICOM tag
DcmTag key(0x0010, 0x1030); // This is PatientWeight
if (key.getEVR() != EVR_DS)
{
LOG(ERROR) << "The DICOM dictionary has not been correctly read";
throw OrthancException(ErrorCode_InternalError);
}
}
/* initialize network, i.e. create an instance of T_ASC_Network*. */
T_ASC_Network *net;
OFCondition cond = ASC_initializeNetwork
(NET_ACCEPTOR, OFstatic_cast(int, server->port_), /*opt_acse_timeout*/ 30, &net);
if (cond.bad())
{
LOG(ERROR) << "cannot create network: " << cond.text();
throw OrthancException("Cannot create network");
}
LOG(INFO) << "DICOM server started";
server->started_ = true;
while (server->continue_)
{
/* receive an association and acknowledge or reject it. If the association was */
/* acknowledged, offer corresponding services and invoke one or more if required. */
std::auto_ptr<Internals::CommandDispatcher> dispatcher(Internals::AcceptAssociation(*server, net));
if (dispatcher.get() != NULL)
{
if (server->isThreaded_)
{
server->bagOfDispatchers_.Add(dispatcher.release());
}
else
{
IRunnableBySteps::RunUntilDone(*dispatcher);
}
}
}
LOG(INFO) << "DICOM server stopping";
/* drop the network, i.e. free memory of T_ASC_Network* structure. This call */
/* is the counterpart of ASC_initializeNetwork(...) which was called above. */
cond = ASC_dropNetwork(&net);
if (cond.bad())
{
LOG(ERROR) << "Error while dropping the network: " << cond.text();
}
}
