Mercurial > hg > orthanc
annotate OrthancServer/Internals/CommandDispatcher.cpp @ 102:7593b57dc1bf
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 03 Oct 2012 16:28:13 +0200 |
| parents | 428784e59dcd |
| children | fe180eae201d |
| 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. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, but | |
| 12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License | |
| 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 **/ | |
| 19 | |
| 20 | |
| 21 #include "CommandDispatcher.h" | |
| 22 | |
| 23 #include "FindScp.h" | |
| 24 #include "StoreScp.h" | |
| 25 #include "MoveScp.h" | |
| 26 #include "../../Core/Toolbox.h" | |
| 27 | |
| 28 #include <dcmtk/dcmnet/dcasccfg.h> /* for class DcmAssociationConfiguration */ | |
| 101 | 29 #include <boost/lexical_cast.hpp> |
|
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30 #include <glog/logging.h> |
| 0 | 31 |
| 32 static OFBool opt_rejectWithoutImplementationUID = OFFalse; | |
| 33 | |
| 34 | |
| 62 | 35 namespace Orthanc |
| 0 | 36 { |
| 37 namespace Internals | |
| 38 { | |
| 39 OFCondition AssociationCleanup(T_ASC_Association *assoc) | |
| 40 { | |
| 41 OFString temp_str; | |
| 42 OFCondition cond = ASC_dropSCPAssociation(assoc); | |
| 43 if (cond.bad()) | |
| 44 { | |
|
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45 LOG(FATAL) << cond.text(); |
| 0 | 46 return cond; |
| 47 } | |
| 48 | |
| 49 cond = ASC_destroyAssociation(&assoc); | |
| 50 if (cond.bad()) | |
| 51 { | |
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52 LOG(FATAL) << cond.text(); |
| 0 | 53 return cond; |
| 54 } | |
| 55 | |
| 56 return cond; | |
| 57 } | |
| 58 | |
| 59 | |
| 60 | |
| 61 CommandDispatcher* AcceptAssociation(const DicomServer& server, T_ASC_Network *net) | |
| 62 { | |
| 63 DcmAssociationConfiguration asccfg; | |
| 64 char buf[BUFSIZ]; | |
| 65 T_ASC_Association *assoc; | |
| 66 OFCondition cond; | |
| 67 OFString sprofile; | |
| 68 OFString temp_str; | |
| 69 | |
| 70 std::vector<const char*> knownAbstractSyntaxes; | |
| 71 | |
| 72 // For C-STORE | |
| 73 if (server.HasStoreRequestHandlerFactory()) | |
| 74 { | |
| 75 knownAbstractSyntaxes.push_back(UID_VerificationSOPClass); | |
| 76 } | |
| 77 | |
| 78 // For C-FIND | |
| 79 if (server.HasFindRequestHandlerFactory()) | |
| 80 { | |
| 81 knownAbstractSyntaxes.push_back(UID_FINDPatientRootQueryRetrieveInformationModel); | |
| 82 knownAbstractSyntaxes.push_back(UID_FINDStudyRootQueryRetrieveInformationModel); | |
| 83 } | |
| 84 | |
| 85 // For C-MOVE | |
| 86 if (server.HasMoveRequestHandlerFactory()) | |
| 87 { | |
| 88 knownAbstractSyntaxes.push_back(UID_MOVEStudyRootQueryRetrieveInformationModel); | |
| 89 } | |
| 90 | |
| 91 const char* transferSyntaxes[] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }; | |
| 92 int numTransferSyntaxes = 0; | |
| 93 | |
| 94 cond = ASC_receiveAssociation(net, &assoc, | |
| 95 /*opt_maxPDU*/ ASC_DEFAULTMAXPDU, | |
| 96 NULL, NULL, | |
| 97 /*opt_secureConnection*/ OFFalse, | |
| 98 DUL_NOBLOCK, 1); | |
| 99 | |
| 100 if (cond == DUL_NOASSOCIATIONREQUEST) | |
| 101 { | |
| 102 // Timeout | |
| 103 AssociationCleanup(assoc); | |
| 104 return NULL; | |
| 105 } | |
| 106 | |
| 107 // if some kind of error occured, take care of it | |
| 108 if (cond.bad()) | |
| 109 { | |
|
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110 LOG(ERROR) << "Receiving Association failed: " << cond.text(); |
| 0 | 111 // no matter what kind of error occurred, we need to do a cleanup |
| 112 AssociationCleanup(assoc); | |
| 113 return NULL; | |
| 114 } | |
| 115 | |
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116 LOG(INFO) << "Association Received"; |
| 0 | 117 |
| 118 transferSyntaxes[0] = UID_LittleEndianExplicitTransferSyntax; | |
| 119 transferSyntaxes[1] = UID_BigEndianExplicitTransferSyntax; | |
| 120 transferSyntaxes[2] = UID_LittleEndianImplicitTransferSyntax; | |
| 121 numTransferSyntaxes = 3; | |
| 122 | |
| 123 /* accept the Verification SOP Class if presented */ | |
| 124 cond = ASC_acceptContextsWithPreferredTransferSyntaxes( assoc->params, &knownAbstractSyntaxes[0], knownAbstractSyntaxes.size(), transferSyntaxes, numTransferSyntaxes); | |
| 125 if (cond.bad()) | |
| 126 { | |
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127 LOG(INFO) << cond.text(); |
| 0 | 128 AssociationCleanup(assoc); |
| 129 return NULL; | |
| 130 } | |
| 131 | |
| 132 /* the array of Storage SOP Class UIDs comes from dcuid.h */ | |
| 133 cond = ASC_acceptContextsWithPreferredTransferSyntaxes( assoc->params, dcmAllStorageSOPClassUIDs, numberOfAllDcmStorageSOPClassUIDs, transferSyntaxes, numTransferSyntaxes); | |
| 134 if (cond.bad()) | |
| 135 { | |
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136 LOG(INFO) << cond.text(); |
| 0 | 137 AssociationCleanup(assoc); |
| 138 return NULL; | |
| 139 } | |
| 140 | |
| 141 /* set our app title */ | |
| 142 ASC_setAPTitles(assoc->params, NULL, NULL, server.GetApplicationEntityTitle().c_str()); | |
| 143 | |
| 144 /* acknowledge or reject this association */ | |
| 145 cond = ASC_getApplicationContextName(assoc->params, buf); | |
| 146 if ((cond.bad()) || strcmp(buf, UID_StandardApplicationContext) != 0) | |
| 147 { | |
| 148 /* reject: the application context name is not supported */ | |
| 149 T_ASC_RejectParameters rej = | |
| 150 { | |
| 151 ASC_RESULT_REJECTEDPERMANENT, | |
| 152 ASC_SOURCE_SERVICEUSER, | |
| 153 ASC_REASON_SU_APPCONTEXTNAMENOTSUPPORTED | |
| 154 }; | |
| 155 | |
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156 LOG(INFO) << "Association Rejected: Bad Application Context Name: " << buf; |
| 0 | 157 cond = ASC_rejectAssociation(assoc, &rej); |
| 158 if (cond.bad()) | |
| 159 { | |
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160 LOG(INFO) << cond.text(); |
| 0 | 161 } |
| 162 AssociationCleanup(assoc); | |
| 163 return NULL; | |
| 164 } | |
| 165 | |
| 166 /* check the AETs */ | |
| 167 { | |
| 168 DIC_AE callingTitle_C; | |
| 169 DIC_AE calledTitle_C; | |
| 170 DIC_AE callingIP_C; | |
| 171 DIC_AE calledIP_C; | |
| 172 if (ASC_getAPTitles(assoc->params, callingTitle_C, calledTitle_C, NULL).bad() || | |
| 173 ASC_getPresentationAddresses(assoc->params, callingIP_C, calledIP_C).bad()) | |
| 174 { | |
| 175 T_ASC_RejectParameters rej = | |
| 176 { | |
| 177 ASC_RESULT_REJECTEDPERMANENT, | |
| 178 ASC_SOURCE_SERVICEUSER, | |
| 179 ASC_REASON_SU_NOREASON | |
| 180 }; | |
| 181 ASC_rejectAssociation(assoc, &rej); | |
| 182 AssociationCleanup(assoc); | |
| 183 return NULL; | |
| 184 } | |
| 185 | |
| 101 | 186 std::string callingIP(/*OFSTRING_GUARD*/(callingIP_C)); |
| 187 std::string callingTitle(/*OFSTRING_GUARD*/(callingTitle_C)); | |
| 188 std::string calledTitle(/*OFSTRING_GUARD*/(calledTitle_C)); | |
| 0 | 189 Toolbox::ToUpperCase(callingIP); |
| 190 Toolbox::ToUpperCase(callingTitle); | |
| 191 Toolbox::ToUpperCase(calledTitle); | |
| 192 | |
| 193 if (server.HasCalledApplicationEntityTitleCheck() && | |
| 194 calledTitle != server.GetApplicationEntityTitle()) | |
| 195 { | |
| 196 T_ASC_RejectParameters rej = | |
| 197 { | |
| 198 ASC_RESULT_REJECTEDPERMANENT, | |
| 199 ASC_SOURCE_SERVICEUSER, | |
| 200 ASC_REASON_SU_CALLEDAETITLENOTRECOGNIZED | |
| 201 }; | |
| 202 ASC_rejectAssociation(assoc, &rej); | |
| 203 AssociationCleanup(assoc); | |
| 204 return NULL; | |
| 205 } | |
| 206 | |
| 207 if (server.HasApplicationEntityFilter() && | |
| 208 !server.GetApplicationEntityFilter().IsAllowed(callingIP, callingTitle)) | |
| 209 { | |
| 210 T_ASC_RejectParameters rej = | |
| 211 { | |
| 212 ASC_RESULT_REJECTEDPERMANENT, | |
| 213 ASC_SOURCE_SERVICEUSER, | |
| 214 ASC_REASON_SU_CALLINGAETITLENOTRECOGNIZED | |
| 215 }; | |
| 216 ASC_rejectAssociation(assoc, &rej); | |
| 217 AssociationCleanup(assoc); | |
| 218 return NULL; | |
| 219 } | |
| 220 } | |
| 221 | |
| 222 if (opt_rejectWithoutImplementationUID && strlen(assoc->params->theirImplementationClassUID) == 0) | |
| 223 { | |
| 224 /* reject: the no implementation Class UID provided */ | |
| 225 T_ASC_RejectParameters rej = | |
| 226 { | |
| 227 ASC_RESULT_REJECTEDPERMANENT, | |
| 228 ASC_SOURCE_SERVICEUSER, | |
| 229 ASC_REASON_SU_NOREASON | |
| 230 }; | |
| 231 | |
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232 LOG(INFO) << "Association Rejected: No Implementation Class UID provided"; |
| 0 | 233 cond = ASC_rejectAssociation(assoc, &rej); |
| 234 if (cond.bad()) | |
| 235 { | |
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236 LOG(INFO) << cond.text(); |
| 0 | 237 } |
| 238 AssociationCleanup(assoc); | |
| 239 return NULL; | |
| 240 } | |
| 241 | |
| 242 { | |
| 243 cond = ASC_acknowledgeAssociation(assoc); | |
| 244 if (cond.bad()) | |
| 245 { | |
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246 LOG(ERROR) << cond.text(); |
| 0 | 247 AssociationCleanup(assoc); |
| 248 return NULL; | |
| 249 } | |
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250 LOG(INFO) << "Association Acknowledged (Max Send PDV: " << assoc->sendPDVLength << ")"; |
| 0 | 251 if (ASC_countAcceptedPresentationContexts(assoc->params) == 0) |
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252 LOG(INFO) << " (but no valid presentation contexts)"; |
| 0 | 253 } |
| 254 | |
| 255 return new CommandDispatcher(server, assoc); | |
| 256 } | |
| 257 | |
| 258 bool CommandDispatcher::Step() | |
| 259 /* | |
| 260 * This function receives DIMSE commmands over the network connection | |
| 261 * and handles these commands correspondingly. Note that in case of | |
| 262 * storscp only C-ECHO-RQ and C-STORE-RQ commands can be processed. | |
| 263 */ | |
| 264 { | |
| 265 bool finished = false; | |
| 266 | |
| 267 // receive a DIMSE command over the network, with a timeout of 1 second | |
| 268 DcmDataset *statusDetail = NULL; | |
| 269 T_ASC_PresentationContextID presID = 0; | |
| 270 T_DIMSE_Message msg; | |
| 271 | |
| 272 OFCondition cond = DIMSE_receiveCommand(assoc_, DIMSE_NONBLOCKING, 1, &presID, &msg, &statusDetail); | |
| 273 elapsedTimeSinceLastCommand_++; | |
| 274 | |
| 275 // if the command which was received has extra status | |
| 276 // detail information, dump this information | |
| 277 if (statusDetail != NULL) | |
| 278 { | |
| 101 | 279 //LOG4CPP_WARN(Internals::GetLogger(), "Status Detail:" << OFendl << DcmObject::PrintHelper(*statusDetail)); |
| 0 | 280 delete statusDetail; |
| 281 } | |
| 282 | |
| 283 if (cond == DIMSE_OUTOFRESOURCES) | |
| 284 { | |
| 285 finished = true; | |
| 286 } | |
| 287 else if (cond == DIMSE_NODATAAVAILABLE) | |
| 288 { | |
| 289 // Timeout due to DIMSE_NONBLOCKING | |
| 290 if (clientTimeout_ != 0 && | |
| 291 elapsedTimeSinceLastCommand_ >= clientTimeout_) | |
| 292 { | |
| 293 // This timeout is actually a client timeout | |
| 294 finished = true; | |
| 295 } | |
| 296 } | |
| 297 else if (cond == EC_Normal) | |
| 298 { | |
| 299 // Reset the client timeout counter | |
| 300 elapsedTimeSinceLastCommand_ = 0; | |
| 301 | |
| 302 // in case we received a valid message, process this command | |
| 303 // note that storescp can only process a C-ECHO-RQ and a C-STORE-RQ | |
| 304 switch (msg.CommandField) | |
| 305 { | |
| 306 case DIMSE_C_ECHO_RQ: | |
| 307 // process C-ECHO-Request | |
| 308 cond = EchoScp(assoc_, &msg, presID); | |
| 309 break; | |
| 310 | |
| 311 case DIMSE_C_STORE_RQ: | |
| 312 // process C-STORE-Request | |
| 313 if (server_.HasStoreRequestHandlerFactory()) | |
| 314 { | |
| 315 std::auto_ptr<IStoreRequestHandler> handler | |
| 316 (server_.GetStoreRequestHandlerFactory().ConstructStoreRequestHandler()); | |
| 317 cond = Internals::storeScp(assoc_, &msg, presID, *handler); | |
| 318 } | |
| 319 else | |
| 320 cond = DIMSE_BADCOMMANDTYPE; // Should never happen | |
| 321 break; | |
| 322 | |
| 323 case DIMSE_C_MOVE_RQ: | |
| 324 // process C-MOVE-Request | |
| 325 if (server_.HasMoveRequestHandlerFactory()) | |
| 326 { | |
| 327 std::auto_ptr<IMoveRequestHandler> handler | |
| 328 (server_.GetMoveRequestHandlerFactory().ConstructMoveRequestHandler()); | |
| 329 cond = Internals::moveScp(assoc_, &msg, presID, *handler); | |
| 330 } | |
| 331 else | |
| 332 cond = DIMSE_BADCOMMANDTYPE; // Should never happen | |
| 333 break; | |
| 334 | |
| 335 case DIMSE_C_FIND_RQ: | |
| 336 // process C-FIND-Request | |
| 337 if (server_.HasFindRequestHandlerFactory()) | |
| 338 { | |
| 339 std::auto_ptr<IFindRequestHandler> handler | |
| 340 (server_.GetFindRequestHandlerFactory().ConstructFindRequestHandler()); | |
| 341 cond = Internals::findScp(assoc_, &msg, presID, *handler); | |
| 342 } | |
| 343 else | |
| 344 cond = DIMSE_BADCOMMANDTYPE; // Should never happen | |
| 345 break; | |
| 346 | |
| 347 default: | |
| 348 // we cannot handle this kind of message | |
| 349 cond = DIMSE_BADCOMMANDTYPE; | |
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350 LOG(ERROR) << "cannot handle command: 0x" << std::hex << msg.CommandField; |
| 0 | 351 break; |
| 352 } | |
| 353 } | |
| 354 else | |
| 355 { | |
| 356 // Bad status, which indicates the closing of the connection by | |
| 357 // the peer or a network error | |
| 358 finished = true; | |
| 359 } | |
| 360 | |
| 361 if (finished) | |
| 362 { | |
| 363 if (cond == DUL_PEERREQUESTEDRELEASE) | |
| 364 { | |
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365 LOG(INFO) << "Association Release"; |
| 0 | 366 ASC_acknowledgeRelease(assoc_); |
| 367 } | |
| 368 else if (cond == DUL_PEERABORTEDASSOCIATION) | |
| 369 { | |
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370 LOG(INFO) << "Association Aborted"; |
| 0 | 371 } |
| 372 else | |
| 373 { | |
| 374 OFString temp_str; | |
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375 LOG(ERROR) << "DIMSE failure (aborting association): " << cond.text(); |
| 0 | 376 /* some kind of error so abort the association */ |
| 377 ASC_abortAssociation(assoc_); | |
| 378 } | |
| 379 } | |
| 380 | |
| 381 return !finished; | |
| 382 } | |
| 383 | |
| 384 | |
| 385 OFCondition EchoScp( T_ASC_Association * assoc, T_DIMSE_Message * msg, T_ASC_PresentationContextID presID) | |
| 386 { | |
| 387 OFString temp_str; | |
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388 LOG(INFO) << "Received Echo Request"; |
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389 //LOG(DEBUG) << DIMSE_dumpMessage(temp_str, msg->msg.CEchoRQ, DIMSE_INCOMING, NULL, presID)); |
| 0 | 390 |
| 391 /* the echo succeeded !! */ | |
| 392 OFCondition cond = DIMSE_sendEchoResponse(assoc, presID, &msg->msg.CEchoRQ, STATUS_Success, NULL); | |
| 393 if (cond.bad()) | |
| 394 { | |
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395 LOG(ERROR) << "Echo SCP Failed: " << cond.text(); |
| 0 | 396 } |
| 397 return cond; | |
| 398 } | |
| 399 } | |
| 400 } |