Mercurial > hg > orthanc
diff Core/DicomNetworking/Internals/CommandDispatcher.cpp @ 2382:7284093111b0
big reorganization to cleanly separate framework vs. server
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Tue, 29 Aug 2017 21:17:35 +0200 |
parents | OrthancServer/Internals/CommandDispatcher.cpp@b8969010b534 |
children | 878b59270859 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Core/DicomNetworking/Internals/CommandDispatcher.cpp Tue Aug 29 21:17:35 2017 +0200 @@ -0,0 +1,934 @@ +/** + * Orthanc - A Lightweight, RESTful DICOM Store + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017 Osimis, Belgium + * + * This program 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 3 of the + * License, or (at your option) any later version. + * + * In addition, as a special exception, the copyright holders of this + * program give permission to link the code of its release with the + * OpenSSL project's "OpenSSL" library (or with modified versions of it + * that use the same license as the "OpenSSL" library), and distribute + * the linked executables. You must obey the GNU General Public License + * in all respects for all of the code used other than "OpenSSL". If you + * modify file(s) with this exception, you may extend this exception to + * your version of the file(s), but you are not obligated to do so. If + * you do not wish to do so, delete this exception statement from your + * version. If you delete this exception statement from all source files + * in the program, then also delete it here. + * + * This program 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + + + +/*========================================================================= + + This file is based on portions of the following project: + + Program: DCMTK 3.6.0 + Module: http://dicom.offis.de/dcmtk.php.en + +Copyright (C) 1994-2011, OFFIS e.V. +All rights reserved. + +This software and supporting documentation were developed by + + OFFIS e.V. + R&D Division Health + Escherweg 2 + 26121 Oldenburg, Germany + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + +- Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +- Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +- Neither the name of OFFIS nor the names of its contributors may be + used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +=========================================================================*/ + + +#include "../../PrecompiledHeaders.h" +#include "CommandDispatcher.h" + +#include "FindScp.h" +#include "StoreScp.h" +#include "MoveScp.h" +#include "../../Toolbox.h" +#include "../../Logging.h" + +#include <dcmtk/dcmnet/dcasccfg.h> /* for class DcmAssociationConfiguration */ +#include <boost/lexical_cast.hpp> + +static OFBool opt_rejectWithoutImplementationUID = OFFalse; + + + +static DUL_PRESENTATIONCONTEXT * +findPresentationContextID(LST_HEAD * head, + T_ASC_PresentationContextID presentationContextID) +{ + DUL_PRESENTATIONCONTEXT *pc; + LST_HEAD **l; + OFBool found = OFFalse; + + if (head == NULL) + return NULL; + + l = &head; + if (*l == NULL) + return NULL; + + pc = OFstatic_cast(DUL_PRESENTATIONCONTEXT *, LST_Head(l)); + (void)LST_Position(l, OFstatic_cast(LST_NODE *, pc)); + + while (pc && !found) { + if (pc->presentationContextID == presentationContextID) { + found = OFTrue; + } else { + pc = OFstatic_cast(DUL_PRESENTATIONCONTEXT *, LST_Next(l)); + } + } + return pc; +} + + +/** accept all presenstation contexts for unknown SOP classes, + * i.e. UIDs appearing in the list of abstract syntaxes + * where no corresponding name is defined in the UID dictionary. + * @param params pointer to association parameters structure + * @param transferSyntax transfer syntax to accept + * @param acceptedRole SCU/SCP role to accept + */ +static OFCondition acceptUnknownContextsWithTransferSyntax( + T_ASC_Parameters * params, + const char* transferSyntax, + T_ASC_SC_ROLE acceptedRole) +{ + OFCondition cond = EC_Normal; + int n, i, k; + DUL_PRESENTATIONCONTEXT *dpc; + T_ASC_PresentationContext pc; + OFBool accepted = OFFalse; + OFBool abstractOK = OFFalse; + + n = ASC_countPresentationContexts(params); + for (i = 0; i < n; i++) + { + cond = ASC_getPresentationContext(params, i, &pc); + if (cond.bad()) return cond; + abstractOK = OFFalse; + accepted = OFFalse; + + if (dcmFindNameOfUID(pc.abstractSyntax) == NULL) + { + abstractOK = OFTrue; + + /* check the transfer syntax */ + for (k = 0; (k < OFstatic_cast(int, pc.transferSyntaxCount)) && !accepted; k++) + { + if (strcmp(pc.proposedTransferSyntaxes[k], transferSyntax) == 0) + { + accepted = OFTrue; + } + } + } + + if (accepted) + { + cond = ASC_acceptPresentationContext( + params, pc.presentationContextID, + transferSyntax, acceptedRole); + if (cond.bad()) return cond; + } else { + T_ASC_P_ResultReason reason; + + /* do not refuse if already accepted */ + dpc = findPresentationContextID(params->DULparams.acceptedPresentationContext, + pc.presentationContextID); + if ((dpc == NULL) || ((dpc != NULL) && (dpc->result != ASC_P_ACCEPTANCE))) + { + + if (abstractOK) { + reason = ASC_P_TRANSFERSYNTAXESNOTSUPPORTED; + } else { + reason = ASC_P_ABSTRACTSYNTAXNOTSUPPORTED; + } + /* + * If previously this presentation context was refused + * because of bad transfer syntax let it stay that way. + */ + if ((dpc != NULL) && (dpc->result == ASC_P_TRANSFERSYNTAXESNOTSUPPORTED)) + reason = ASC_P_TRANSFERSYNTAXESNOTSUPPORTED; + + cond = ASC_refusePresentationContext(params, pc.presentationContextID, reason); + if (cond.bad()) return cond; + } + } + } + return EC_Normal; +} + + +/** accept all presenstation contexts for unknown SOP classes, + * i.e. UIDs appearing in the list of abstract syntaxes + * where no corresponding name is defined in the UID dictionary. + * This method is passed a list of "preferred" transfer syntaxes. + * @param params pointer to association parameters structure + * @param transferSyntax transfer syntax to accept + * @param acceptedRole SCU/SCP role to accept + */ +static OFCondition acceptUnknownContextsWithPreferredTransferSyntaxes( + T_ASC_Parameters * params, + const char* transferSyntaxes[], int transferSyntaxCount, + T_ASC_SC_ROLE acceptedRole = ASC_SC_ROLE_DEFAULT) +{ + OFCondition cond = EC_Normal; + /* + ** Accept in the order "least wanted" to "most wanted" transfer + ** syntax. Accepting a transfer syntax will override previously + ** accepted transfer syntaxes. + */ + for (int i = transferSyntaxCount - 1; i >= 0; i--) + { + cond = acceptUnknownContextsWithTransferSyntax(params, transferSyntaxes[i], acceptedRole); + if (cond.bad()) return cond; + } + return cond; +} + + + +namespace Orthanc +{ + namespace Internals + { + /** + * EXTRACT OF FILE "dcmdata/libsrc/dcuid.cc" FROM DCMTK 3.6.0 + * (dcmAllStorageSOPClassUIDs). + * + * an array of const strings containing all known Storage SOP + * Classes that fit into the conventional + * PATIENT-STUDY-SERIES-INSTANCE information model, + * i.e. everything a Storage SCP might want to store in a PACS. + * Special cases such as hanging protocol storage or the Storage + * SOP Class are not included in this list. + * + * THIS LIST CONTAINS ALL STORAGE SOP CLASSES INCLUDING RETIRED + * ONES AND IS LARGER THAN 64 ENTRIES. + */ + + const char* orthancStorageSOPClassUIDs[] = + { + UID_AmbulatoryECGWaveformStorage, + UID_ArterialPulseWaveformStorage, + UID_AutorefractionMeasurementsStorage, + UID_BasicStructuredDisplayStorage, + UID_BasicTextSRStorage, + UID_BasicVoiceAudioWaveformStorage, + UID_BlendingSoftcopyPresentationStateStorage, + UID_BreastTomosynthesisImageStorage, + UID_CardiacElectrophysiologyWaveformStorage, + UID_ChestCADSRStorage, + UID_ColonCADSRStorage, + UID_ColorSoftcopyPresentationStateStorage, + UID_ComprehensiveSRStorage, + UID_ComputedRadiographyImageStorage, + UID_CTImageStorage, + UID_DeformableSpatialRegistrationStorage, + UID_DigitalIntraOralXRayImageStorageForPresentation, + UID_DigitalIntraOralXRayImageStorageForProcessing, + UID_DigitalMammographyXRayImageStorageForPresentation, + UID_DigitalMammographyXRayImageStorageForProcessing, + UID_DigitalXRayImageStorageForPresentation, + UID_DigitalXRayImageStorageForProcessing, + UID_EncapsulatedCDAStorage, + UID_EncapsulatedPDFStorage, + UID_EnhancedCTImageStorage, + UID_EnhancedMRColorImageStorage, + UID_EnhancedMRImageStorage, + UID_EnhancedPETImageStorage, + UID_EnhancedSRStorage, + UID_EnhancedUSVolumeStorage, + UID_EnhancedXAImageStorage, + UID_EnhancedXRFImageStorage, + UID_GeneralAudioWaveformStorage, + UID_GeneralECGWaveformStorage, + UID_GenericImplantTemplateStorage, + UID_GrayscaleSoftcopyPresentationStateStorage, + UID_HemodynamicWaveformStorage, + UID_ImplantAssemblyTemplateStorage, + UID_ImplantationPlanSRDocumentStorage, + UID_ImplantTemplateGroupStorage, + UID_IntraocularLensCalculationsStorage, + UID_KeratometryMeasurementsStorage, + UID_KeyObjectSelectionDocumentStorage, + UID_LensometryMeasurementsStorage, + UID_MacularGridThicknessAndVolumeReportStorage, + UID_MammographyCADSRStorage, + UID_MRImageStorage, + UID_MRSpectroscopyStorage, + UID_MultiframeGrayscaleByteSecondaryCaptureImageStorage, + UID_MultiframeGrayscaleWordSecondaryCaptureImageStorage, + UID_MultiframeSingleBitSecondaryCaptureImageStorage, + UID_MultiframeTrueColorSecondaryCaptureImageStorage, + UID_NuclearMedicineImageStorage, + UID_OphthalmicAxialMeasurementsStorage, + UID_OphthalmicPhotography16BitImageStorage, + UID_OphthalmicPhotography8BitImageStorage, + UID_OphthalmicTomographyImageStorage, + UID_OphthalmicVisualFieldStaticPerimetryMeasurementsStorage, + UID_PositronEmissionTomographyImageStorage, + UID_ProcedureLogStorage, + UID_PseudoColorSoftcopyPresentationStateStorage, + UID_RawDataStorage, + UID_RealWorldValueMappingStorage, + UID_RespiratoryWaveformStorage, + UID_RTBeamsTreatmentRecordStorage, + UID_RTBrachyTreatmentRecordStorage, + UID_RTDoseStorage, + UID_RTImageStorage, + UID_RTIonBeamsTreatmentRecordStorage, + UID_RTIonPlanStorage, + UID_RTPlanStorage, + UID_RTStructureSetStorage, + UID_RTTreatmentSummaryRecordStorage, + UID_SecondaryCaptureImageStorage, + UID_SegmentationStorage, + UID_SpatialFiducialsStorage, + UID_SpatialRegistrationStorage, + UID_SpectaclePrescriptionReportStorage, + UID_StereometricRelationshipStorage, + UID_SubjectiveRefractionMeasurementsStorage, + UID_SurfaceSegmentationStorage, + UID_TwelveLeadECGWaveformStorage, + UID_UltrasoundImageStorage, + UID_UltrasoundMultiframeImageStorage, + UID_VideoEndoscopicImageStorage, + UID_VideoMicroscopicImageStorage, + UID_VideoPhotographicImageStorage, + UID_VisualAcuityMeasurementsStorage, + UID_VLEndoscopicImageStorage, + UID_VLMicroscopicImageStorage, + UID_VLPhotographicImageStorage, + UID_VLSlideCoordinatesMicroscopicImageStorage, + UID_VLWholeSlideMicroscopyImageStorage, + UID_XAXRFGrayscaleSoftcopyPresentationStateStorage, + UID_XRay3DAngiographicImageStorage, + UID_XRay3DCraniofacialImageStorage, + UID_XRayAngiographicImageStorage, + UID_XRayRadiationDoseSRStorage, + UID_XRayRadiofluoroscopicImageStorage, + // retired + UID_RETIRED_HardcopyColorImageStorage, + UID_RETIRED_HardcopyGrayscaleImageStorage, + UID_RETIRED_NuclearMedicineImageStorage, + UID_RETIRED_StandaloneCurveStorage, + UID_RETIRED_StandaloneModalityLUTStorage, + UID_RETIRED_StandaloneOverlayStorage, + UID_RETIRED_StandalonePETCurveStorage, + UID_RETIRED_StandaloneVOILUTStorage, + UID_RETIRED_StoredPrintStorage, + UID_RETIRED_UltrasoundImageStorage, + UID_RETIRED_UltrasoundMultiframeImageStorage, + UID_RETIRED_VLImageStorage, + UID_RETIRED_VLMultiFrameImageStorage, + UID_RETIRED_XRayAngiographicBiPlaneImageStorage, + // draft + UID_DRAFT_SRAudioStorage, + UID_DRAFT_SRComprehensiveStorage, + UID_DRAFT_SRDetailStorage, + UID_DRAFT_SRTextStorage, + UID_DRAFT_WaveformStorage, + UID_DRAFT_RTBeamsDeliveryInstructionStorage, + NULL + }; + + const int orthancStorageSOPClassUIDsCount = (sizeof(orthancStorageSOPClassUIDs) / sizeof(const char*)) - 1; + + + + OFCondition AssociationCleanup(T_ASC_Association *assoc) + { + OFCondition cond = ASC_dropSCPAssociation(assoc); + if (cond.bad()) + { + LOG(FATAL) << cond.text(); + return cond; + } + + cond = ASC_destroyAssociation(&assoc); + if (cond.bad()) + { + LOG(FATAL) << cond.text(); + return cond; + } + + return cond; + } + + + + CommandDispatcher* AcceptAssociation(const DicomServer& server, T_ASC_Network *net) + { + DcmAssociationConfiguration asccfg; + char buf[BUFSIZ]; + T_ASC_Association *assoc; + OFCondition cond; + OFString sprofile; + OFString temp_str; + + std::vector<const char*> knownAbstractSyntaxes; + + // For C-STORE + if (server.HasStoreRequestHandlerFactory()) + { + knownAbstractSyntaxes.push_back(UID_VerificationSOPClass); + } + + // For C-FIND + if (server.HasFindRequestHandlerFactory()) + { + knownAbstractSyntaxes.push_back(UID_FINDPatientRootQueryRetrieveInformationModel); + knownAbstractSyntaxes.push_back(UID_FINDStudyRootQueryRetrieveInformationModel); + } + + if (server.HasWorklistRequestHandlerFactory()) + { + knownAbstractSyntaxes.push_back(UID_FINDModalityWorklistInformationModel); + } + + // For C-MOVE + if (server.HasMoveRequestHandlerFactory()) + { + knownAbstractSyntaxes.push_back(UID_MOVEStudyRootQueryRetrieveInformationModel); + knownAbstractSyntaxes.push_back(UID_MOVEPatientRootQueryRetrieveInformationModel); + } + + cond = ASC_receiveAssociation(net, &assoc, + /*opt_maxPDU*/ ASC_DEFAULTMAXPDU, + NULL, NULL, + /*opt_secureConnection*/ OFFalse, + DUL_NOBLOCK, 1); + + if (cond == DUL_NOASSOCIATIONREQUEST) + { + // Timeout + AssociationCleanup(assoc); + return NULL; + } + + // if some kind of error occured, take care of it + if (cond.bad()) + { + LOG(ERROR) << "Receiving Association failed: " << cond.text(); + // no matter what kind of error occurred, we need to do a cleanup + AssociationCleanup(assoc); + return NULL; + } + + // Retrieve the AET and the IP address of the remote modality + std::string remoteAet; + std::string remoteIp; + std::string calledAet; + + { + DIC_AE remoteAet_C; + DIC_AE calledAet_C; + DIC_AE remoteIp_C; + DIC_AE calledIP_C; + if (ASC_getAPTitles(assoc->params, remoteAet_C, calledAet_C, NULL).bad() || + ASC_getPresentationAddresses(assoc->params, remoteIp_C, calledIP_C).bad()) + { + T_ASC_RejectParameters rej = + { + ASC_RESULT_REJECTEDPERMANENT, + ASC_SOURCE_SERVICEUSER, + ASC_REASON_SU_NOREASON + }; + ASC_rejectAssociation(assoc, &rej); + AssociationCleanup(assoc); + return NULL; + } + + remoteIp = std::string(/*OFSTRING_GUARD*/(remoteIp_C)); + remoteAet = std::string(/*OFSTRING_GUARD*/(remoteAet_C)); + calledAet = (/*OFSTRING_GUARD*/(calledAet_C)); + } + + LOG(INFO) << "Association Received from AET " << remoteAet + << " on IP " << remoteIp; + + + std::vector<const char*> transferSyntaxes; + + // This is the list of the transfer syntaxes that were supported up to Orthanc 0.7.1 + transferSyntaxes.push_back(UID_LittleEndianExplicitTransferSyntax); + transferSyntaxes.push_back(UID_BigEndianExplicitTransferSyntax); + transferSyntaxes.push_back(UID_LittleEndianImplicitTransferSyntax); + + // New transfer syntaxes supported since Orthanc 0.7.2 + if (!server.HasApplicationEntityFilter() || + server.GetApplicationEntityFilter().IsAllowedTransferSyntax(remoteIp, remoteAet, calledAet, TransferSyntax_Deflated)) + { + transferSyntaxes.push_back(UID_DeflatedExplicitVRLittleEndianTransferSyntax); + } + + if (!server.HasApplicationEntityFilter() || + server.GetApplicationEntityFilter().IsAllowedTransferSyntax(remoteIp, remoteAet, calledAet, TransferSyntax_Jpeg)) + { + transferSyntaxes.push_back(UID_JPEGProcess1TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess2_4TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess3_5TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess6_8TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess7_9TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess10_12TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess11_13TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess14TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess15TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess16_18TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess17_19TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess20_22TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess21_23TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess24_26TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess25_27TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess28TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess29TransferSyntax); + transferSyntaxes.push_back(UID_JPEGProcess14SV1TransferSyntax); + transferSyntaxes.push_back(UID_JPEGLSLosslessTransferSyntax); + transferSyntaxes.push_back(UID_JPEGLSLossyTransferSyntax); + } + + if (!server.HasApplicationEntityFilter() || + server.GetApplicationEntityFilter().IsAllowedTransferSyntax(remoteIp, remoteAet, calledAet, TransferSyntax_Jpeg2000)) + { + transferSyntaxes.push_back(UID_JPEG2000LosslessOnlyTransferSyntax); + transferSyntaxes.push_back(UID_JPEG2000TransferSyntax); + } + + if (!server.HasApplicationEntityFilter() || + server.GetApplicationEntityFilter().IsAllowedTransferSyntax(remoteIp, remoteAet, calledAet, TransferSyntax_JpegLossless)) + { + transferSyntaxes.push_back(UID_JPEG2000LosslessOnlyTransferSyntax); + transferSyntaxes.push_back(UID_JPEG2000TransferSyntax); + transferSyntaxes.push_back(UID_JPEG2000Part2MulticomponentImageCompressionLosslessOnlyTransferSyntax); + transferSyntaxes.push_back(UID_JPEG2000Part2MulticomponentImageCompressionTransferSyntax); + } + + if (!server.HasApplicationEntityFilter() || + server.GetApplicationEntityFilter().IsAllowedTransferSyntax(remoteIp, remoteAet, calledAet, TransferSyntax_Jpip)) + { + transferSyntaxes.push_back(UID_JPIPReferencedTransferSyntax); + transferSyntaxes.push_back(UID_JPIPReferencedDeflateTransferSyntax); + } + + if (!server.HasApplicationEntityFilter() || + server.GetApplicationEntityFilter().IsAllowedTransferSyntax(remoteIp, remoteAet, calledAet, TransferSyntax_Mpeg2)) + { + transferSyntaxes.push_back(UID_MPEG2MainProfileAtMainLevelTransferSyntax); + transferSyntaxes.push_back(UID_MPEG2MainProfileAtHighLevelTransferSyntax); + } + + if (!server.HasApplicationEntityFilter() || + server.GetApplicationEntityFilter().IsAllowedTransferSyntax(remoteIp, remoteAet, calledAet, TransferSyntax_Rle)) + { + transferSyntaxes.push_back(UID_RLELosslessTransferSyntax); + } + + /* accept the Verification SOP Class if presented */ + cond = ASC_acceptContextsWithPreferredTransferSyntaxes(assoc->params, &knownAbstractSyntaxes[0], knownAbstractSyntaxes.size(), &transferSyntaxes[0], transferSyntaxes.size()); + if (cond.bad()) + { + LOG(INFO) << cond.text(); + AssociationCleanup(assoc); + return NULL; + } + + /* the array of Storage SOP Class UIDs comes from dcuid.h */ + cond = ASC_acceptContextsWithPreferredTransferSyntaxes(assoc->params, orthancStorageSOPClassUIDs, orthancStorageSOPClassUIDsCount, &transferSyntaxes[0], transferSyntaxes.size()); + if (cond.bad()) + { + LOG(INFO) << cond.text(); + AssociationCleanup(assoc); + return NULL; + } + + if (!server.HasApplicationEntityFilter() || + server.GetApplicationEntityFilter().IsUnknownSopClassAccepted(remoteIp, remoteAet, calledAet)) + { + /* + * Promiscous mode is enabled: Accept everything not known not + * to be a storage SOP class. + **/ + cond = acceptUnknownContextsWithPreferredTransferSyntaxes( + assoc->params, &transferSyntaxes[0], transferSyntaxes.size()); + if (cond.bad()) + { + LOG(INFO) << cond.text(); + AssociationCleanup(assoc); + return NULL; + } + } + + /* set our app title */ + ASC_setAPTitles(assoc->params, NULL, NULL, server.GetApplicationEntityTitle().c_str()); + + /* acknowledge or reject this association */ + cond = ASC_getApplicationContextName(assoc->params, buf); + if ((cond.bad()) || strcmp(buf, UID_StandardApplicationContext) != 0) + { + /* reject: the application context name is not supported */ + T_ASC_RejectParameters rej = + { + ASC_RESULT_REJECTEDPERMANENT, + ASC_SOURCE_SERVICEUSER, + ASC_REASON_SU_APPCONTEXTNAMENOTSUPPORTED + }; + + LOG(INFO) << "Association Rejected: Bad Application Context Name: " << buf; + cond = ASC_rejectAssociation(assoc, &rej); + if (cond.bad()) + { + LOG(INFO) << cond.text(); + } + AssociationCleanup(assoc); + return NULL; + } + + /* check the AETs */ + if (!server.IsMyAETitle(calledAet)) + { + LOG(WARNING) << "Rejected association, because of a bad called AET in the request (" << calledAet << ")"; + T_ASC_RejectParameters rej = + { + ASC_RESULT_REJECTEDPERMANENT, + ASC_SOURCE_SERVICEUSER, + ASC_REASON_SU_CALLEDAETITLENOTRECOGNIZED + }; + ASC_rejectAssociation(assoc, &rej); + AssociationCleanup(assoc); + return NULL; + } + + if (server.HasApplicationEntityFilter() && + !server.GetApplicationEntityFilter().IsAllowedConnection(remoteIp, remoteAet, calledAet)) + { + LOG(WARNING) << "Rejected association for remote AET " << remoteAet << " on IP " << remoteIp; + T_ASC_RejectParameters rej = + { + ASC_RESULT_REJECTEDPERMANENT, + ASC_SOURCE_SERVICEUSER, + ASC_REASON_SU_CALLINGAETITLENOTRECOGNIZED + }; + ASC_rejectAssociation(assoc, &rej); + AssociationCleanup(assoc); + return NULL; + } + + if (opt_rejectWithoutImplementationUID && + strlen(assoc->params->theirImplementationClassUID) == 0) + { + /* reject: the no implementation Class UID provided */ + T_ASC_RejectParameters rej = + { + ASC_RESULT_REJECTEDPERMANENT, + ASC_SOURCE_SERVICEUSER, + ASC_REASON_SU_NOREASON + }; + + LOG(INFO) << "Association Rejected: No Implementation Class UID provided"; + cond = ASC_rejectAssociation(assoc, &rej); + if (cond.bad()) + { + LOG(INFO) << cond.text(); + } + AssociationCleanup(assoc); + return NULL; + } + + { + cond = ASC_acknowledgeAssociation(assoc); + if (cond.bad()) + { + LOG(ERROR) << cond.text(); + AssociationCleanup(assoc); + return NULL; + } + LOG(INFO) << "Association Acknowledged (Max Send PDV: " << assoc->sendPDVLength << ")"; + if (ASC_countAcceptedPresentationContexts(assoc->params) == 0) + LOG(INFO) << " (but no valid presentation contexts)"; + } + + IApplicationEntityFilter* filter = server.HasApplicationEntityFilter() ? &server.GetApplicationEntityFilter() : NULL; + return new CommandDispatcher(server, assoc, remoteIp, remoteAet, calledAet, filter); + } + + + CommandDispatcher::CommandDispatcher(const DicomServer& server, + T_ASC_Association* assoc, + const std::string& remoteIp, + const std::string& remoteAet, + const std::string& calledAet, + IApplicationEntityFilter* filter) : + server_(server), + assoc_(assoc), + remoteIp_(remoteIp), + remoteAet_(remoteAet), + calledAet_(calledAet), + filter_(filter) + { + associationTimeout_ = server.GetAssociationTimeout(); + elapsedTimeSinceLastCommand_ = 0; + } + + + CommandDispatcher::~CommandDispatcher() + { + try + { + AssociationCleanup(assoc_); + } + catch (...) + { + LOG(ERROR) << "Some association was not cleanly aborted"; + } + } + + + bool CommandDispatcher::Step() + /* + * This function receives DIMSE commmands over the network connection + * and handles these commands correspondingly. Note that in case of + * storscp only C-ECHO-RQ and C-STORE-RQ commands can be processed. + */ + { + bool finished = false; + + // receive a DIMSE command over the network, with a timeout of 1 second + DcmDataset *statusDetail = NULL; + T_ASC_PresentationContextID presID = 0; + T_DIMSE_Message msg; + + OFCondition cond = DIMSE_receiveCommand(assoc_, DIMSE_NONBLOCKING, 1, &presID, &msg, &statusDetail); + elapsedTimeSinceLastCommand_++; + + // if the command which was received has extra status + // detail information, dump this information + if (statusDetail != NULL) + { + //LOG4CPP_WARN(Internals::GetLogger(), "Status Detail:" << OFendl << DcmObject::PrintHelper(*statusDetail)); + delete statusDetail; + } + + if (cond == DIMSE_OUTOFRESOURCES) + { + finished = true; + } + else if (cond == DIMSE_NODATAAVAILABLE) + { + // Timeout due to DIMSE_NONBLOCKING + if (associationTimeout_ != 0 && + elapsedTimeSinceLastCommand_ >= associationTimeout_) + { + // This timeout is actually a association timeout + finished = true; + } + } + else if (cond == EC_Normal) + { + // Reset the association timeout counter + elapsedTimeSinceLastCommand_ = 0; + + // Convert the type of request to Orthanc's internal type + bool supported = false; + DicomRequestType request; + switch (msg.CommandField) + { + case DIMSE_C_ECHO_RQ: + request = DicomRequestType_Echo; + supported = true; + break; + + case DIMSE_C_STORE_RQ: + request = DicomRequestType_Store; + supported = true; + break; + + case DIMSE_C_MOVE_RQ: + request = DicomRequestType_Move; + supported = true; + break; + + case DIMSE_C_FIND_RQ: + request = DicomRequestType_Find; + supported = true; + break; + + default: + // we cannot handle this kind of message + cond = DIMSE_BADCOMMANDTYPE; + LOG(ERROR) << "cannot handle command: 0x" << std::hex << msg.CommandField; + break; + } + + + // Check whether this request is allowed by the security filter + if (supported && + filter_ != NULL && + !filter_->IsAllowedRequest(remoteIp_, remoteAet_, calledAet_, request)) + { + LOG(WARNING) << "Rejected " << EnumerationToString(request) + << " request from remote DICOM modality with AET \"" + << remoteAet_ << "\" and hostname \"" << remoteIp_ << "\""; + cond = DIMSE_ILLEGALASSOCIATION; + supported = false; + finished = true; + } + + // in case we received a supported message, process this command + if (supported) + { + // If anything goes wrong, there will be a "BADCOMMANDTYPE" answer + cond = DIMSE_BADCOMMANDTYPE; + + switch (request) + { + case DicomRequestType_Echo: + cond = EchoScp(assoc_, &msg, presID); + break; + + case DicomRequestType_Store: + if (server_.HasStoreRequestHandlerFactory()) // Should always be true + { + std::auto_ptr<IStoreRequestHandler> handler + (server_.GetStoreRequestHandlerFactory().ConstructStoreRequestHandler()); + + if (handler.get() != NULL) + { + cond = Internals::storeScp(assoc_, &msg, presID, *handler, remoteIp_); + } + } + break; + + case DicomRequestType_Move: + if (server_.HasMoveRequestHandlerFactory()) // Should always be true + { + std::auto_ptr<IMoveRequestHandler> handler + (server_.GetMoveRequestHandlerFactory().ConstructMoveRequestHandler()); + + if (handler.get() != NULL) + { + cond = Internals::moveScp(assoc_, &msg, presID, *handler, remoteIp_, remoteAet_, calledAet_); + } + } + break; + + case DicomRequestType_Find: + if (server_.HasFindRequestHandlerFactory() || // Should always be true + server_.HasWorklistRequestHandlerFactory()) + { + std::auto_ptr<IFindRequestHandler> findHandler; + if (server_.HasFindRequestHandlerFactory()) + { + findHandler.reset(server_.GetFindRequestHandlerFactory().ConstructFindRequestHandler()); + } + + std::auto_ptr<IWorklistRequestHandler> worklistHandler; + if (server_.HasWorklistRequestHandlerFactory()) + { + worklistHandler.reset(server_.GetWorklistRequestHandlerFactory().ConstructWorklistRequestHandler()); + } + + cond = Internals::findScp(assoc_, &msg, presID, server_.GetRemoteModalities(), + findHandler.get(), worklistHandler.get(), + remoteIp_, remoteAet_, calledAet_); + } + break; + + default: + // Should never happen + break; + } + } + } + else + { + // Bad status, which indicates the closing of the connection by + // the peer or a network error + finished = true; + + LOG(INFO) << cond.text(); + } + + if (finished) + { + if (cond == DUL_PEERREQUESTEDRELEASE) + { + LOG(INFO) << "Association Release"; + ASC_acknowledgeRelease(assoc_); + } + else if (cond == DUL_PEERABORTEDASSOCIATION) + { + LOG(INFO) << "Association Aborted"; + } + else + { + OFString temp_str; + LOG(INFO) << "DIMSE failure (aborting association): " << cond.text(); + /* some kind of error so abort the association */ + ASC_abortAssociation(assoc_); + } + } + + return !finished; + } + + + OFCondition EchoScp(T_ASC_Association * assoc, T_DIMSE_Message * msg, T_ASC_PresentationContextID presID) + { + OFString temp_str; + LOG(INFO) << "Received Echo Request"; + //LOG(DEBUG) << DIMSE_dumpMessage(temp_str, msg->msg.CEchoRQ, DIMSE_INCOMING, NULL, presID)); + + /* the echo succeeded !! */ + OFCondition cond = DIMSE_sendEchoResponse(assoc, presID, &msg->msg.CEchoRQ, STATUS_Success, NULL); + if (cond.bad()) + { + LOG(ERROR) << "Echo SCP Failed: " << cond.text(); + } + return cond; + } + } +}