Mercurial > hg > orthanc
annotate OrthancServer/Internals/CommandDispatcher.cpp @ 136:fe180eae201d
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 09 Oct 2012 18:21:01 +0200 |
| parents | 7593b57dc1bf |
| children | 4d5f0857ec9c |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 62 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
| 0 | 3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege, |
| 4 * Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 136 | 10 * |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 0 | 22 * |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
| 33 #include "CommandDispatcher.h" | |
| 34 | |
| 35 #include "FindScp.h" | |
| 36 #include "StoreScp.h" | |
| 37 #include "MoveScp.h" | |
| 38 #include "../../Core/Toolbox.h" | |
| 39 | |
| 40 #include <dcmtk/dcmnet/dcasccfg.h> /* for class DcmAssociationConfiguration */ | |
| 101 | 41 #include <boost/lexical_cast.hpp> |
|
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42 #include <glog/logging.h> |
| 0 | 43 |
| 44 static OFBool opt_rejectWithoutImplementationUID = OFFalse; | |
| 45 | |
| 46 | |
| 62 | 47 namespace Orthanc |
| 0 | 48 { |
| 49 namespace Internals | |
| 50 { | |
| 51 OFCondition AssociationCleanup(T_ASC_Association *assoc) | |
| 52 { | |
| 53 OFString temp_str; | |
| 54 OFCondition cond = ASC_dropSCPAssociation(assoc); | |
| 55 if (cond.bad()) | |
| 56 { | |
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57 LOG(FATAL) << cond.text(); |
| 0 | 58 return cond; |
| 59 } | |
| 60 | |
| 61 cond = ASC_destroyAssociation(&assoc); | |
| 62 if (cond.bad()) | |
| 63 { | |
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64 LOG(FATAL) << cond.text(); |
| 0 | 65 return cond; |
| 66 } | |
| 67 | |
| 68 return cond; | |
| 69 } | |
| 70 | |
| 71 | |
| 72 | |
| 73 CommandDispatcher* AcceptAssociation(const DicomServer& server, T_ASC_Network *net) | |
| 74 { | |
| 75 DcmAssociationConfiguration asccfg; | |
| 76 char buf[BUFSIZ]; | |
| 77 T_ASC_Association *assoc; | |
| 78 OFCondition cond; | |
| 79 OFString sprofile; | |
| 80 OFString temp_str; | |
| 81 | |
| 82 std::vector<const char*> knownAbstractSyntaxes; | |
| 83 | |
| 84 // For C-STORE | |
| 85 if (server.HasStoreRequestHandlerFactory()) | |
| 86 { | |
| 87 knownAbstractSyntaxes.push_back(UID_VerificationSOPClass); | |
| 88 } | |
| 89 | |
| 90 // For C-FIND | |
| 91 if (server.HasFindRequestHandlerFactory()) | |
| 92 { | |
| 93 knownAbstractSyntaxes.push_back(UID_FINDPatientRootQueryRetrieveInformationModel); | |
| 94 knownAbstractSyntaxes.push_back(UID_FINDStudyRootQueryRetrieveInformationModel); | |
| 95 } | |
| 96 | |
| 97 // For C-MOVE | |
| 98 if (server.HasMoveRequestHandlerFactory()) | |
| 99 { | |
| 100 knownAbstractSyntaxes.push_back(UID_MOVEStudyRootQueryRetrieveInformationModel); | |
| 101 } | |
| 102 | |
| 103 const char* transferSyntaxes[] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }; | |
| 104 int numTransferSyntaxes = 0; | |
| 105 | |
| 106 cond = ASC_receiveAssociation(net, &assoc, | |
| 107 /*opt_maxPDU*/ ASC_DEFAULTMAXPDU, | |
| 108 NULL, NULL, | |
| 109 /*opt_secureConnection*/ OFFalse, | |
| 110 DUL_NOBLOCK, 1); | |
| 111 | |
| 112 if (cond == DUL_NOASSOCIATIONREQUEST) | |
| 113 { | |
| 114 // Timeout | |
| 115 AssociationCleanup(assoc); | |
| 116 return NULL; | |
| 117 } | |
| 118 | |
| 119 // if some kind of error occured, take care of it | |
| 120 if (cond.bad()) | |
| 121 { | |
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122 LOG(ERROR) << "Receiving Association failed: " << cond.text(); |
| 0 | 123 // no matter what kind of error occurred, we need to do a cleanup |
| 124 AssociationCleanup(assoc); | |
| 125 return NULL; | |
| 126 } | |
| 127 | |
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128 LOG(INFO) << "Association Received"; |
| 0 | 129 |
| 130 transferSyntaxes[0] = UID_LittleEndianExplicitTransferSyntax; | |
| 131 transferSyntaxes[1] = UID_BigEndianExplicitTransferSyntax; | |
| 132 transferSyntaxes[2] = UID_LittleEndianImplicitTransferSyntax; | |
| 133 numTransferSyntaxes = 3; | |
| 134 | |
| 135 /* accept the Verification SOP Class if presented */ | |
| 136 cond = ASC_acceptContextsWithPreferredTransferSyntaxes( assoc->params, &knownAbstractSyntaxes[0], knownAbstractSyntaxes.size(), transferSyntaxes, numTransferSyntaxes); | |
| 137 if (cond.bad()) | |
| 138 { | |
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139 LOG(INFO) << cond.text(); |
| 0 | 140 AssociationCleanup(assoc); |
| 141 return NULL; | |
| 142 } | |
| 143 | |
| 144 /* the array of Storage SOP Class UIDs comes from dcuid.h */ | |
| 145 cond = ASC_acceptContextsWithPreferredTransferSyntaxes( assoc->params, dcmAllStorageSOPClassUIDs, numberOfAllDcmStorageSOPClassUIDs, transferSyntaxes, numTransferSyntaxes); | |
| 146 if (cond.bad()) | |
| 147 { | |
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148 LOG(INFO) << cond.text(); |
| 0 | 149 AssociationCleanup(assoc); |
| 150 return NULL; | |
| 151 } | |
| 152 | |
| 153 /* set our app title */ | |
| 154 ASC_setAPTitles(assoc->params, NULL, NULL, server.GetApplicationEntityTitle().c_str()); | |
| 155 | |
| 156 /* acknowledge or reject this association */ | |
| 157 cond = ASC_getApplicationContextName(assoc->params, buf); | |
| 158 if ((cond.bad()) || strcmp(buf, UID_StandardApplicationContext) != 0) | |
| 159 { | |
| 160 /* reject: the application context name is not supported */ | |
| 161 T_ASC_RejectParameters rej = | |
| 162 { | |
| 163 ASC_RESULT_REJECTEDPERMANENT, | |
| 164 ASC_SOURCE_SERVICEUSER, | |
| 165 ASC_REASON_SU_APPCONTEXTNAMENOTSUPPORTED | |
| 166 }; | |
| 167 | |
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168 LOG(INFO) << "Association Rejected: Bad Application Context Name: " << buf; |
| 0 | 169 cond = ASC_rejectAssociation(assoc, &rej); |
| 170 if (cond.bad()) | |
| 171 { | |
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172 LOG(INFO) << cond.text(); |
| 0 | 173 } |
| 174 AssociationCleanup(assoc); | |
| 175 return NULL; | |
| 176 } | |
| 177 | |
| 178 /* check the AETs */ | |
| 179 { | |
| 180 DIC_AE callingTitle_C; | |
| 181 DIC_AE calledTitle_C; | |
| 182 DIC_AE callingIP_C; | |
| 183 DIC_AE calledIP_C; | |
| 184 if (ASC_getAPTitles(assoc->params, callingTitle_C, calledTitle_C, NULL).bad() || | |
| 185 ASC_getPresentationAddresses(assoc->params, callingIP_C, calledIP_C).bad()) | |
| 186 { | |
| 187 T_ASC_RejectParameters rej = | |
| 188 { | |
| 189 ASC_RESULT_REJECTEDPERMANENT, | |
| 190 ASC_SOURCE_SERVICEUSER, | |
| 191 ASC_REASON_SU_NOREASON | |
| 192 }; | |
| 193 ASC_rejectAssociation(assoc, &rej); | |
| 194 AssociationCleanup(assoc); | |
| 195 return NULL; | |
| 196 } | |
| 197 | |
| 101 | 198 std::string callingIP(/*OFSTRING_GUARD*/(callingIP_C)); |
| 199 std::string callingTitle(/*OFSTRING_GUARD*/(callingTitle_C)); | |
| 200 std::string calledTitle(/*OFSTRING_GUARD*/(calledTitle_C)); | |
| 0 | 201 Toolbox::ToUpperCase(callingIP); |
| 202 Toolbox::ToUpperCase(callingTitle); | |
| 203 Toolbox::ToUpperCase(calledTitle); | |
| 204 | |
| 205 if (server.HasCalledApplicationEntityTitleCheck() && | |
| 206 calledTitle != server.GetApplicationEntityTitle()) | |
| 207 { | |
| 208 T_ASC_RejectParameters rej = | |
| 209 { | |
| 210 ASC_RESULT_REJECTEDPERMANENT, | |
| 211 ASC_SOURCE_SERVICEUSER, | |
| 212 ASC_REASON_SU_CALLEDAETITLENOTRECOGNIZED | |
| 213 }; | |
| 214 ASC_rejectAssociation(assoc, &rej); | |
| 215 AssociationCleanup(assoc); | |
| 216 return NULL; | |
| 217 } | |
| 218 | |
| 219 if (server.HasApplicationEntityFilter() && | |
| 220 !server.GetApplicationEntityFilter().IsAllowed(callingIP, callingTitle)) | |
| 221 { | |
| 222 T_ASC_RejectParameters rej = | |
| 223 { | |
| 224 ASC_RESULT_REJECTEDPERMANENT, | |
| 225 ASC_SOURCE_SERVICEUSER, | |
| 226 ASC_REASON_SU_CALLINGAETITLENOTRECOGNIZED | |
| 227 }; | |
| 228 ASC_rejectAssociation(assoc, &rej); | |
| 229 AssociationCleanup(assoc); | |
| 230 return NULL; | |
| 231 } | |
| 232 } | |
| 233 | |
| 234 if (opt_rejectWithoutImplementationUID && strlen(assoc->params->theirImplementationClassUID) == 0) | |
| 235 { | |
| 236 /* reject: the no implementation Class UID provided */ | |
| 237 T_ASC_RejectParameters rej = | |
| 238 { | |
| 239 ASC_RESULT_REJECTEDPERMANENT, | |
| 240 ASC_SOURCE_SERVICEUSER, | |
| 241 ASC_REASON_SU_NOREASON | |
| 242 }; | |
| 243 | |
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244 LOG(INFO) << "Association Rejected: No Implementation Class UID provided"; |
| 0 | 245 cond = ASC_rejectAssociation(assoc, &rej); |
| 246 if (cond.bad()) | |
| 247 { | |
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248 LOG(INFO) << cond.text(); |
| 0 | 249 } |
| 250 AssociationCleanup(assoc); | |
| 251 return NULL; | |
| 252 } | |
| 253 | |
| 254 { | |
| 255 cond = ASC_acknowledgeAssociation(assoc); | |
| 256 if (cond.bad()) | |
| 257 { | |
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258 LOG(ERROR) << cond.text(); |
| 0 | 259 AssociationCleanup(assoc); |
| 260 return NULL; | |
| 261 } | |
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262 LOG(INFO) << "Association Acknowledged (Max Send PDV: " << assoc->sendPDVLength << ")"; |
| 0 | 263 if (ASC_countAcceptedPresentationContexts(assoc->params) == 0) |
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264 LOG(INFO) << " (but no valid presentation contexts)"; |
| 0 | 265 } |
| 266 | |
| 267 return new CommandDispatcher(server, assoc); | |
| 268 } | |
| 269 | |
| 270 bool CommandDispatcher::Step() | |
| 271 /* | |
| 272 * This function receives DIMSE commmands over the network connection | |
| 273 * and handles these commands correspondingly. Note that in case of | |
| 274 * storscp only C-ECHO-RQ and C-STORE-RQ commands can be processed. | |
| 275 */ | |
| 276 { | |
| 277 bool finished = false; | |
| 278 | |
| 279 // receive a DIMSE command over the network, with a timeout of 1 second | |
| 280 DcmDataset *statusDetail = NULL; | |
| 281 T_ASC_PresentationContextID presID = 0; | |
| 282 T_DIMSE_Message msg; | |
| 283 | |
| 284 OFCondition cond = DIMSE_receiveCommand(assoc_, DIMSE_NONBLOCKING, 1, &presID, &msg, &statusDetail); | |
| 285 elapsedTimeSinceLastCommand_++; | |
| 286 | |
| 287 // if the command which was received has extra status | |
| 288 // detail information, dump this information | |
| 289 if (statusDetail != NULL) | |
| 290 { | |
| 101 | 291 //LOG4CPP_WARN(Internals::GetLogger(), "Status Detail:" << OFendl << DcmObject::PrintHelper(*statusDetail)); |
| 0 | 292 delete statusDetail; |
| 293 } | |
| 294 | |
| 295 if (cond == DIMSE_OUTOFRESOURCES) | |
| 296 { | |
| 297 finished = true; | |
| 298 } | |
| 299 else if (cond == DIMSE_NODATAAVAILABLE) | |
| 300 { | |
| 301 // Timeout due to DIMSE_NONBLOCKING | |
| 302 if (clientTimeout_ != 0 && | |
| 303 elapsedTimeSinceLastCommand_ >= clientTimeout_) | |
| 304 { | |
| 305 // This timeout is actually a client timeout | |
| 306 finished = true; | |
| 307 } | |
| 308 } | |
| 309 else if (cond == EC_Normal) | |
| 310 { | |
| 311 // Reset the client timeout counter | |
| 312 elapsedTimeSinceLastCommand_ = 0; | |
| 313 | |
| 314 // in case we received a valid message, process this command | |
| 315 // note that storescp can only process a C-ECHO-RQ and a C-STORE-RQ | |
| 316 switch (msg.CommandField) | |
| 317 { | |
| 318 case DIMSE_C_ECHO_RQ: | |
| 319 // process C-ECHO-Request | |
| 320 cond = EchoScp(assoc_, &msg, presID); | |
| 321 break; | |
| 322 | |
| 323 case DIMSE_C_STORE_RQ: | |
| 324 // process C-STORE-Request | |
| 325 if (server_.HasStoreRequestHandlerFactory()) | |
| 326 { | |
| 327 std::auto_ptr<IStoreRequestHandler> handler | |
| 328 (server_.GetStoreRequestHandlerFactory().ConstructStoreRequestHandler()); | |
| 329 cond = Internals::storeScp(assoc_, &msg, presID, *handler); | |
| 330 } | |
| 331 else | |
| 332 cond = DIMSE_BADCOMMANDTYPE; // Should never happen | |
| 333 break; | |
| 334 | |
| 335 case DIMSE_C_MOVE_RQ: | |
| 336 // process C-MOVE-Request | |
| 337 if (server_.HasMoveRequestHandlerFactory()) | |
| 338 { | |
| 339 std::auto_ptr<IMoveRequestHandler> handler | |
| 340 (server_.GetMoveRequestHandlerFactory().ConstructMoveRequestHandler()); | |
| 341 cond = Internals::moveScp(assoc_, &msg, presID, *handler); | |
| 342 } | |
| 343 else | |
| 344 cond = DIMSE_BADCOMMANDTYPE; // Should never happen | |
| 345 break; | |
| 346 | |
| 347 case DIMSE_C_FIND_RQ: | |
| 348 // process C-FIND-Request | |
| 349 if (server_.HasFindRequestHandlerFactory()) | |
| 350 { | |
| 351 std::auto_ptr<IFindRequestHandler> handler | |
| 352 (server_.GetFindRequestHandlerFactory().ConstructFindRequestHandler()); | |
| 353 cond = Internals::findScp(assoc_, &msg, presID, *handler); | |
| 354 } | |
| 355 else | |
| 356 cond = DIMSE_BADCOMMANDTYPE; // Should never happen | |
| 357 break; | |
| 358 | |
| 359 default: | |
| 360 // we cannot handle this kind of message | |
| 361 cond = DIMSE_BADCOMMANDTYPE; | |
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362 LOG(ERROR) << "cannot handle command: 0x" << std::hex << msg.CommandField; |
| 0 | 363 break; |
| 364 } | |
| 365 } | |
| 366 else | |
| 367 { | |
| 368 // Bad status, which indicates the closing of the connection by | |
| 369 // the peer or a network error | |
| 370 finished = true; | |
| 371 } | |
| 372 | |
| 373 if (finished) | |
| 374 { | |
| 375 if (cond == DUL_PEERREQUESTEDRELEASE) | |
| 376 { | |
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377 LOG(INFO) << "Association Release"; |
| 0 | 378 ASC_acknowledgeRelease(assoc_); |
| 379 } | |
| 380 else if (cond == DUL_PEERABORTEDASSOCIATION) | |
| 381 { | |
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382 LOG(INFO) << "Association Aborted"; |
| 0 | 383 } |
| 384 else | |
| 385 { | |
| 386 OFString temp_str; | |
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387 LOG(ERROR) << "DIMSE failure (aborting association): " << cond.text(); |
| 0 | 388 /* some kind of error so abort the association */ |
| 389 ASC_abortAssociation(assoc_); | |
| 390 } | |
| 391 } | |
| 392 | |
| 393 return !finished; | |
| 394 } | |
| 395 | |
| 396 | |
| 397 OFCondition EchoScp( T_ASC_Association * assoc, T_DIMSE_Message * msg, T_ASC_PresentationContextID presID) | |
| 398 { | |
| 399 OFString temp_str; | |
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400 LOG(INFO) << "Received Echo Request"; |
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401 //LOG(DEBUG) << DIMSE_dumpMessage(temp_str, msg->msg.CEchoRQ, DIMSE_INCOMING, NULL, presID)); |
| 0 | 402 |
| 403 /* the echo succeeded !! */ | |
| 404 OFCondition cond = DIMSE_sendEchoResponse(assoc, presID, &msg->msg.CEchoRQ, STATUS_Success, NULL); | |
| 405 if (cond.bad()) | |
| 406 { | |
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407 LOG(ERROR) << "Echo SCP Failed: " << cond.text(); |
| 0 | 408 } |
| 409 return cond; | |
| 410 } | |
| 411 } | |
| 412 } |