OFFIS DCMTK  Version 3.6.0
dul.h
1 /*
2  *
3  * Copyright (C) 1994-2010, OFFIS e.V.
4  * All rights reserved. See COPYRIGHT file for details.
5  *
6  * This software and supporting documentation were partly developed by
7  *
8  * OFFIS e.V.
9  * R&D Division Health
10  * Escherweg 2
11  * D-26121 Oldenburg, Germany
12  *
13  * For further copyrights, see the following paragraphs.
14  *
15  */
16 
17 /*
18  Copyright (C) 1993, 1994, RSNA and Washington University
19 
20  The software and supporting documentation for the Radiological
21  Society of North America (RSNA) 1993, 1994 Digital Imaging and
22  Communications in Medicine (DICOM) Demonstration were developed
23  at the
24  Electronic Radiology Laboratory
25  Mallinckrodt Institute of Radiology
26  Washington University School of Medicine
27  510 S. Kingshighway Blvd.
28  St. Louis, MO 63110
29  as part of the 1993, 1994 DICOM Central Test Node project for, and
30  under contract with, the Radiological Society of North America.
31 
32  THIS SOFTWARE IS MADE AVAILABLE, AS IS, AND NEITHER RSNA NOR
33  WASHINGTON UNIVERSITY MAKE ANY WARRANTY ABOUT THE SOFTWARE, ITS
34  PERFORMANCE, ITS MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR
35  USE, FREEDOM FROM ANY COMPUTER DISEASES OR ITS CONFORMITY TO ANY
36  SPECIFICATION. THE ENTIRE RISK AS TO QUALITY AND PERFORMANCE OF
37  THE SOFTWARE IS WITH THE USER.
38 
39  Copyright of the software and supporting documentation is
40  jointly owned by RSNA and Washington University, and free access
41  is hereby granted as a license to use this software, copy this
42  software and prepare derivative works based upon this software.
43  However, any distribution of this software source code or
44  supporting documentation or derivative works (source code and
45  supporting documentation) must include the three paragraphs of
46  the copyright notice.
47 */
48 
49 /*
50 ** DICOM 93
51 ** Electronic Radiology Laboratory
52 ** Mallinckrodt Institute of Radiology
53 ** Washington University School of Medicine
54 **
55 ** Module Name(s):
56 ** Author, Date: Stephen M. Moore, 14-Apr-1993
57 ** Intent: This file defines the public structures and constants
58 ** and the function prototypes for the DUL (DICOM Upper
59 ** Layer) facility.
60 ** Last Update: $Author: joergr $, $Date: 2010-12-01 08:26:10 $
61 ** Revision: $Revision: 1.31 $
62 ** Status: $State: Exp $
63 */
64 
65 
66 #ifndef DUL_IS_IN
67 #define DUL_IS_IN 1
68 
69 #include "dcmtk/config/osconfig.h" /* make sure OS specific configuration is included first */
70 
71 #include "dcmtk/ofstd/ofglobal.h"
72 #include "dcmtk/ofstd/oftypes.h"
73 #include "dcmtk/ofstd/ofcast.h"
74 #include "dcmtk/dcmnet/extneg.h"
75 #include "dcmtk/dcmnet/dicom.h"
76 #include "dcmtk/dcmnet/dcuserid.h"
77 
79 class DcmTransportLayer;
80 class LST_HEAD;
81 
88 extern OFGlobal<OFBool> dcmDisableGethostbyaddr; /* default OFFalse */
89 
95 extern OFGlobal<OFBool> dcmStrictRoleSelection; /* default OFFalse */
96 
100 extern OFGlobal<Sint32> dcmConnectionTimeout; /* default -1 */
101 
106 extern OFGlobal<int> dcmExternalSocketHandle; /* default -1 */
107 
114 extern OFGlobal<const char *> dcmTCPWrapperDaemonName; /* default NULL */
115 
116 /* Global option flag for compatibility with DCMTK releases prior to version 3.0.
117  * Default (0) is automatic handling, which should work in most cases.
118  */
119 extern OFGlobal<unsigned long> dcmEnableBackwardCompatibility;
120 
121 #ifndef DUL_KEYS
122 #define DUL_KEYS 1
123 typedef void DUL_NETWORKKEY;
124 typedef void DUL_ASSOCIATIONKEY;
125 typedef unsigned char DUL_PRESENTATIONCONTEXTID;
126 #endif
127 
131 /* Define a structure containing fixed length fields that can
132  * be used for requesting or accepting an association. The
133  * lengths of "titles" and "names" are specified by the DICOM
134  * protocol document. The fields in the structure are made
135  * longer to allow for zero-terminators. DICOM doesn't know
136  * about node names, but the DUL_ package needs them.
137  */
138 
139 #define DUL_LEN_TITLE OFstatic_cast(size_t, 16) /* required by DICOM protocol */
140 #define DUL_LEN_NAME OFstatic_cast(size_t, 64) /* required by DICOM protocol */
141 #define DUL_LEN_UID OFstatic_cast(size_t, 64) /* required by DICOM protocol */
142 #define DUL_LEN_NODE OFstatic_cast(size_t, 127) /* should be "big enough" */
143 
144 
145 /* DICOM PDU Types */
146 
147 #define DUL_TYPEASSOCIATERQ OFstatic_cast(unsigned char, 0x01)
148 #define DUL_TYPEASSOCIATEAC OFstatic_cast(unsigned char, 0x02)
149 #define DUL_TYPEASSOCIATERJ OFstatic_cast(unsigned char, 0x03)
150 #define DUL_TYPEDATA OFstatic_cast(unsigned char, 0x04)
151 #define DUL_TYPERELEASERQ OFstatic_cast(unsigned char, 0x05)
152 #define DUL_TYPERELEASERP OFstatic_cast(unsigned char, 0x06)
153 #define DUL_TYPEABORT OFstatic_cast(unsigned char, 0x07)
154 
155 #define DUL_MAXTYPE OFstatic_cast(unsigned char, 0x07)
156 
158 {
159 public:
160 
162  virtual ~DUL_ModeCallback() {}
163 
167  virtual void callback(unsigned long mode) = 0;
168 };
169 
170 typedef struct {
171  char applicationContextName[DUL_LEN_NAME + 1];
172  char callingAPTitle[DUL_LEN_TITLE + 1];
173  char calledAPTitle[DUL_LEN_TITLE + 1];
174  char respondingAPTitle[DUL_LEN_TITLE + 1];
175  unsigned long maxPDU;
176  unsigned short result;
177  unsigned short resultSource;
178  unsigned short diagnostic;
179  char callingPresentationAddress[64];
180  char calledPresentationAddress[64];
181  LST_HEAD *requestedPresentationContext;
182  LST_HEAD *acceptedPresentationContext;
183  unsigned short maximumOperationsInvoked;
184  unsigned short maximumOperationsPerformed;
185  char callingImplementationClassUID[DICOM_UI_LENGTH + 1];
186  char callingImplementationVersionName[16 + 1];
187  char calledImplementationClassUID[DICOM_UI_LENGTH + 1];
188  char calledImplementationVersionName[16 + 1];
189  unsigned long peerMaxPDU;
190  SOPClassExtendedNegotiationSubItemList *requestedExtNegList;
191  SOPClassExtendedNegotiationSubItemList *acceptedExtNegList;
192  UserIdentityNegotiationSubItemRQ *reqUserIdentNeg;
193  UserIdentityNegotiationSubItemAC *ackUserIdentNeg;
194 
195  OFBool useSecureLayer;
197 
198 typedef enum {
199  DUL_SC_ROLE_NONE,
200  DUL_SC_ROLE_DEFAULT,
201  DUL_SC_ROLE_SCU,
202  DUL_SC_ROLE_SCP,
203  DUL_SC_ROLE_SCUSCP
204 } DUL_SC_ROLE;
205 
206 #define DUL_PRESENTATION_ACCEPT 0
207 #define DUL_PRESENTATION_REJECT_USER 1
208 #define DUL_PRESENTATION_REJECT_NOREASON 2
209 #define DUL_PRESENTATION_REJECT_ABSTRACT_SYNTAX 3
210 #define DUL_PRESENTATION_REJECT_TRANSFER_SYNTAX 4
211 
213 
214 typedef struct {
215  void *reserved[2];
216  DUL_PRESENTATIONCONTEXTID presentationContextID;
217  char abstractSyntax[DUL_LEN_UID + 1];
218  LST_HEAD *proposedTransferSyntax;
219  char acceptedTransferSyntax[DUL_LEN_UID + 1];
220  unsigned char result;
221  DUL_SC_ROLE proposedSCRole;
222  DUL_SC_ROLE acceptedSCRole;
224 
225 typedef struct {
226  void *reserved[2];
227  char transferSyntax[DUL_LEN_UID + 1];
229 
230 typedef struct dul_abortitems {
231  unsigned char result;
232  unsigned char source;
233  unsigned char reason;
235 
236 typedef enum {
237  DUL_COMMANDPDV, /* A command PDV inside a data PDU */
238  DUL_DATASETPDV
239 } /* A data set PDV inside a data PDU */
240  DUL_DATAPDV;
241 
242 typedef enum {
243  DUL_BLOCK, /* Block on an operation (read, request) */
244  DUL_NOBLOCK
245 } /* Or return immediately if nothing avail */
246  DUL_BLOCKOPTIONS;
247 
248 typedef struct {
249  unsigned long fragmentLength;
250  unsigned char presentationContextID;
251  DUL_DATAPDV pdvType;
252  OFBool lastPDV;
253  void *data;
254 } DUL_PDV;
255 
256 typedef struct {
257  unsigned long count;
258  void *scratch;
259  unsigned long scratchLength;
260  DUL_ABORTITEMS abort;
261  DUL_PDV *pdv;
262 } DUL_PDVLIST;
263 
264 /* Define the bits that go in the options field for InitializeNetwork
265 **
266 ** The low two bits define the byte order of messages at the DICOM
267 ** level. This does not define the order of user data inside of a
268 ** DICOM PDU.
269 */
270 
271 #define DUL_ORDERMASK 0x03 /* The bottom two bits */
272 #define DUL_ORDERLITTLEENDIAN 0x01
273 #define DUL_ORDERBIGENDIAN 0x02
274 
275 #define DUL_DOMAINMASK 0x04
276 #define DUL_FULLDOMAINNAME 0x04
277 
278 #define DUL_AEREQUESTOR "AE REQUESTOR"
279 #define DUL_AEACCEPTOR "AE ACCEPTOR"
280 #define DUL_AEBOTH "AE BOTH"
281 
282 /* These macros define results and reasons for rejecting an association
283 ** request. Result is permanent or transient. There are a number of
284 ** different reasons for rejecting requests that occur at different layers
285  */
286 #define DUL_REJ_RSLTPERMANENT 0x01
287 #define DUL_REJ_RSLTTRANSIENT 0x02
288 
289 /* These macros define parameters used to construct an ABORT PDU.
290 ** These include the source of the abort (SCU or SCP) and the
291 ** reason for the abort.
292 */
293 
294 #define DUL_SCU_INITIATED_ABORT 0x00
295 #define DUL_SCP_INITIATED_ABORT 0x02
296 
297 #define DUL_ABORTSERVICEUSER 0x00
298 #define DUL_ABORTSERVICEPROVIDER 0x02
299 
300 #define DUL_ABORTNOREASON 0x00
301 #define DUL_ABORTUNRECOGNIZEDPDU 0x01
302 #define DUL_ABORTUNEXPECTEDPDU 0x02
303 #define DUL_ABORTUNRECOGNIZEDPDUPARAM 0x04
304 #define DUL_ABORTUNEXPECTEDPDUPARAM 0x05
305 #define DUL_ABORTINVALIDPDUPARAM 0x06
306 
307 /* These macros define parameters used to construct a REJECT PDU.
308 ** These include the source of the reject (DICOM UL service-user,
309 ** (DICOM UL service-provider) and the reason for the reject.
310 */
311 #define DUL_REJECT_PERMANENT 0x01
312 #define DUL_REJECT_TRANSIENT 0x02
313 
314 #define DUL_ULSU_REJECT 0x01
315 #define DUL_ULSP_ACSE_REJECT 0x02
316 #define DUL_ULSP_PRESENTATION_REJECT 0x03
317 
318 #define DUL_ULSU_REJ_NOREASON 0x01
319 #define DUL_ULSU_REJ_UNSUP_APP_CTX_NAME 0x02
320 #define DUL_ULSU_REJ_UNREC_CALLING_TITLE 0x03
321 #define DUL_ULSU_REJ_UNREC_CALLED_TITLE 0x07
322 
323 #define DUL_ULSP_ACSE_REJ_NOREASON 0x01
324 #define DUL_ULSP_ACSE_UNSUP_PROTOCOL 0x02
325 
326 #define DUL_ULSP_PRES_REJ_TEMP_CONGEST 0x01
327 #define DUL_ULSP_PRES_REJ_LIMIT 0x02
328 
329 #define DUL_ABORTNOREASON 0x00
330 #define DUL_ABORTUNRECOGNIZEDPDU 0x01
331 #define DUL_ABORTUNEXPECTEDPDU 0x02
332 #define DUL_ABORTUNRECOGNIZEDPDUPARAM 0x04
333 #define DUL_ABORTUNEXPECTEDPDUPARAM 0x05
334 #define DUL_ABORTINVALIDPDUPARAM 0x06
335 
336 /* Define a set of constants and types that let the user get information
337 ** about the Association
338 */
339 
340 typedef enum {
341  DUL_K_INTEGER, /* An integer type */
342  DUL_K_STRING /* A string type */
343 } DUL_DATA_TYPE;
344 
345 typedef enum {
346  DUL_K_MAX_PDV_XMIT
347 } DUL_ASSOCIATION_PARAMETER;
348 
349 #define DUL_TIMEOUT 180
350 
351 /* Operating mode flags as defined in the 1993 toolkit specification.
352 ** Needed for backward compatibility with DCMTK releases prior to 3.0
353 ** (and possibly older CTN releases).
354 */
355 
356 #define DUL_DULCOMPAT 2768240730UL
357 #define DUL_DIMSECOMPAT 655360UL
358 #define DUL_MAXPDUCOMPAT 4278190335UL
359 
360 /* Define the function prototypes for this facility.
361 **
362 ** First set of functions are for establishing the network and associations.
363 */
364 
366 DUL_AcknowledgeAssociationRQ(
367  DUL_ASSOCIATIONKEY ** association,
369  int activatePDUStorage);
370 
372 DUL_InitializeNetwork(
373  const char *mode,
374  void *param,
375  int timeout,
376  unsigned long
377  options,
378  DUL_NETWORKKEY ** network);
379 
381 DUL_ReceiveAssociationRQ(
382  DUL_NETWORKKEY ** net,
383  DUL_BLOCKOPTIONS blk,
384  int timeout,
385  DUL_ASSOCIATESERVICEPARAMETERS * parameters,
386  DUL_ASSOCIATIONKEY ** association,
387  int activatePDUStorage);
388 
390 DUL_RejectAssociationRQ(
391  DUL_ASSOCIATIONKEY ** association,
392  DUL_ABORTITEMS * params,
393  int activatePDUStorage);
394 
396 DUL_RequestAssociation(
397  DUL_NETWORKKEY ** network,
399  DUL_ASSOCIATIONKEY ** association,
400  int activatePDUStorage);
401 
402 /* Define functions for releasing/aborting Associations.
403 */
404 OFCondition DUL_AbortAssociation(DUL_ASSOCIATIONKEY ** association);
405 OFCondition DUL_DropAssociation(DUL_ASSOCIATIONKEY ** association);
406 OFCondition DUL_DropNetwork(DUL_NETWORKKEY ** network);
407 OFCondition DUL_ReleaseAssociation(DUL_ASSOCIATIONKEY ** association);
408 OFCondition DUL_AcknowledgeRelease(DUL_ASSOCIATIONKEY ** association);
409 
410 /* Functions for reading/write PDVs inside P DATA PDUs.
411 */
413 DUL_ReadPDVs(DUL_ASSOCIATIONKEY ** association,
414  DUL_PDVLIST * pdvList, DUL_BLOCKOPTIONS block, int timeout);
416 DUL_WritePDVs(DUL_ASSOCIATIONKEY ** association,
417  DUL_PDVLIST * pdvList);
418 OFCondition DUL_NextPDV(DUL_ASSOCIATIONKEY ** association, DUL_PDV * pdv);
419 
420 
421 /* Miscellaneous functions.
422 */
424 DUL_AssociationParameter(DUL_ASSOCIATIONKEY ** association,
425  DUL_ASSOCIATION_PARAMETER param, DUL_DATA_TYPE type,
426  void *address, size_t length);
428 DUL_MakePresentationCtx(DUL_PRESENTATIONCONTEXT ** ctx,
429  DUL_SC_ROLE proposedSCRole, DUL_SC_ROLE acceptedSCRole,
430 DUL_PRESENTATIONCONTEXTID ctxID, unsigned char reason, const char *abstractSyntax,
431  const char *transferSyntax, ...);
432 OFString& DUL_DumpParams(OFString& str, DUL_ASSOCIATESERVICEPARAMETERS * params);
433 OFString& DUL_DumpConnectionParameters(OFString& str, DUL_ASSOCIATIONKEY *association);
434 
435 OFCondition DUL_ClearServiceParameters(DUL_ASSOCIATESERVICEPARAMETERS * params);
436 void DUL_DefaultServiceParameters(DUL_ASSOCIATESERVICEPARAMETERS * params);
437 OFString& dumpExtNegList(OFString& str, SOPClassExtendedNegotiationSubItemList& lst);
438 
439 /*
440 ** Additional functions (from dulextra.cc) needed to support
441 ** selecting amongst several concurrent associations.
442 ** Andrew Hewett, Institute OFFIS, Oldenburg, Germany.
443 */
444 
445 OFBool
446 DUL_dataWaiting(DUL_ASSOCIATIONKEY * callerAssociation, int timeout);
447 int
448 DUL_networkSocket(DUL_NETWORKKEY * callerNet);
449 OFBool
450 DUL_associationWaiting(DUL_NETWORKKEY * callerNet, int timeout);
451 
452 /*
453  * functions allowing to retrieve raw A-ASSOCIATE PDUs from the DUL layer
454  */
455 void DUL_activateAssociatePDUStorage(DUL_ASSOCIATIONKEY *dulassoc);
456 void DUL_returnAssociatePDUStorage(DUL_ASSOCIATIONKEY *dulassoc, void *& pdu, unsigned long& pdusize);
457 
458 /* get pointer to transport connection from opaque association pointer */
459 DcmTransportConnection *DUL_getTransportConnection(DUL_ASSOCIATIONKEY * callerAssociation);
460 
461 /* change transport layer */
462 OFCondition DUL_setTransportLayer(DUL_NETWORKKEY *callerNetworkKey, DcmTransportLayer *newLayer, int takeoverOwnership);
463 
464 /* activate compatibility mode and callback */
465 void DUL_activateCompatibilityMode(DUL_ASSOCIATIONKEY *dulassoc, unsigned long mode);
466 void DUL_activateCallback(DUL_ASSOCIATIONKEY *dulassoc, DUL_ModeCallback *cb);
467 
468 /*
469  * function allowing to retrieve the peer certificate from the DUL layer
470  */
471 unsigned long DUL_getPeerCertificateLength(DUL_ASSOCIATIONKEY *dulassoc);
472 unsigned long DUL_getPeerCertificate(DUL_ASSOCIATIONKEY *dulassoc, void *buf, unsigned long bufLen);
473 
474 /*
475  * functions for multi-process servers
476  */
477 
483 OFBool DUL_processIsForkedChild();
484 
489 void DUL_markProcessAsForkedChild();
490 
503 void DUL_requestForkOnTransportConnectionReceipt(int argc, char *argv[]);
504 
505 
507 void DUL_DumpParams(DUL_ASSOCIATESERVICEPARAMETERS * params);
509 void DUL_DumpConnectionParameters(DUL_ASSOCIATIONKEY *association, STD_NAMESPACE ostream& outstream);
511 void dumpExtNegList(SOPClassExtendedNegotiationSubItemList& lst);
512 
513 #endif
514 
515 /*
516 ** CVS Log
517 ** $Log: dul.h,v $
518 ** Revision 1.31 2010-12-01 08:26:10 joergr
519 ** Added OFFIS copyright header (beginning with the year 1994).
520 **
521 ** Revision 1.30 2010-10-14 13:17:22 joergr
522 ** Updated copyright header. Added reference to COPYRIGHT file.
523 **
524 ** Revision 1.29 2010-08-26 09:28:02 joergr
525 ** Fixed incorrect behavior of association acceptors during SCP/SCU role
526 ** selection negotiation.
527 ** Introduced new global flag which allows for rejecting presentation contexts
528 ** in case of an unsuccessful SCP/SCU role selection (disabled by default).
529 **
530 ** Revision 1.28 2009-12-08 16:37:52 joergr
531 ** Fixed inconsistent source code formatting.
532 **
533 ** Revision 1.27 2009-11-18 11:53:58 uli
534 ** Switched to logging mechanism provided by the "new" oflog module.
535 **
536 ** Revision 1.26 2008-04-17 15:28:33 onken
537 ** Reworked and extended User Identity Negotiation code.
538 **
539 ** Revision 1.25 2007-09-07 08:49:12 onken
540 ** Added basic support for Extended Negotiation of User Identity.
541 **
542 ** Revision 1.24 2006/08/15 16:04:29 meichel
543 ** Updated the code in module dcmnet to correctly compile when
544 ** all standard C++ classes remain in namespace std.
545 **
546 ** Revision 1.23 2005/12/12 15:15:08 meichel
547 ** Added missing include dependency
548 **
549 ** Revision 1.22 2005/12/09 14:48:35 meichel
550 ** Added missing virtual destructors
551 **
552 ** Revision 1.21 2005/12/08 16:02:23 meichel
553 ** Changed include path schema for all DCMTK header files
554 **
555 ** Revision 1.20 2005/11/25 11:31:11 meichel
556 ** StoreSCP now supports multi-process mode both on Posix and Win32 platforms
557 ** where a separate client process is forked for each incoming association.
558 **
559 ** Revision 1.19 2004/02/25 12:31:15 meichel
560 ** Added global option flag for compatibility with very old DCMTK releases in the
561 ** DICOM upper layer and ACSE code. Default is automatic handling, which should
562 ** work in most cases.
563 **
564 ** Revision 1.18 2003/08/14 09:01:37 meichel
565 ** Adapted type casts to new-style typecast operators defined in ofcast.h
566 **
567 ** Revision 1.17 2003/06/10 13:37:36 meichel
568 ** Added support for TCP wrappers in DICOM network layer
569 **
570 ** Revision 1.16 2003/06/06 13:07:29 meichel
571 ** Introduced global flag dcmExternalSocketHandle which allows
572 ** to pass an already opened socket file descriptor to dcmnet.
573 **
574 ** Revision 1.15 2003/06/02 16:44:11 meichel
575 ** Renamed local variables to avoid name clashes with STL
576 **
577 ** Revision 1.14 2002/11/28 16:57:36 meichel
578 ** Added global flag dcmConnectionTimeout that defines a timeout for
579 ** outgoing association requests in the DICOM upper layer.
580 **
581 ** Revision 1.13 2001/11/27 09:54:33 wilkens
582 ** Updated storescp. 6 new options (--output-directory, --sort-conc-studies,
583 ** --exec-on-reception, --exec-on-eostudy, --rename-on-eostudy, and
584 ** --eostudy-timeout) implemented (requirements from GO-Kard).
585 **
586 ** Revision 1.12 2001/10/12 10:18:27 meichel
587 ** Replaced the CONDITION types, constants and functions in the dcmnet module
588 ** by an OFCondition based implementation which eliminates the global condition
589 ** stack. This is a major change, caveat emptor!
590 **
591 ** Revision 1.11 2001/09/26 12:28:59 meichel
592 ** Implemented changes in dcmnet required by the adaptation of dcmdata
593 ** to class OFCondition. Removed some unused code.
594 **
595 ** Revision 1.10 2001/06/01 11:02:02 meichel
596 ** Implemented global flag and command line option to disable reverse
597 ** DNS hostname lookup using gethostbyaddr when accepting associations.
598 **
599 ** Revision 1.9 2000/10/10 12:06:54 meichel
600 ** Updated transport layer error codes and routines for printing
601 ** connection parameters.
602 **
603 ** Revision 1.8 2000/08/10 14:50:54 meichel
604 ** Added initial OpenSSL support.
605 **
606 ** Revision 1.7 2000/06/07 08:57:22 meichel
607 ** dcmnet ACSE routines now allow to retrieve a binary copy of the A-ASSOCIATE
608 ** RQ/AC/RJ PDUs, e.g. for logging purposes.
609 **
610 ** Revision 1.6 1999/04/19 08:39:27 meichel
611 ** Added experimental support for extended SOP class negotiation.
612 **
613 ** Revision 1.5 1999/03/29 11:19:59 meichel
614 ** Cleaned up dcmnet code for char* to const char* assignments.
615 **
616 ** Revision 1.4 1998/06/29 12:14:27 meichel
617 ** Removed some name clashes (e.g. local variable with same
618 ** name as class member) to improve maintainability.
619 ** Applied some code purifications proposed by the gcc 2.8.1 -Weffc++ option.
620 **
621 ** Revision 1.3 1997/07/21 08:40:11 andreas
622 ** - Replace all boolean types (BOOLEAN, CTNBOOLEAN, DICOM_BOOL, BOOL)
623 ** with one unique boolean type OFBool.
624 **
625 ** Revision 1.2 1997/01/13 15:53:02 hewett
626 ** Added missing function prototypes (required for CodeWarrior 10).
627 **
628 ** Revision 1.1.1.1 1996/03/26 18:38:44 hewett
629 ** Initial Release.
630 **
631 **
632 */


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