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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2013 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32 #include "DicomInstanceHasher.h"
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33
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34 #include "../OrthancException.h"
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35 #include "../Toolbox.h"
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36
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37 namespace Orthanc
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38 {
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39 void DicomInstanceHasher::Setup(const std::string& patientId,
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40 const std::string& studyUid,
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41 const std::string& seriesUid,
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42 const std::string& instanceUid)
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43 {
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44 patientId_ = patientId;
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45 studyUid_ = studyUid;
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46 seriesUid_ = seriesUid;
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47 instanceUid_ = instanceUid;
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48
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49 if (patientId_.size() == 0 ||
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50 studyUid_.size() == 0 ||
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51 seriesUid_.size() == 0 ||
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52 instanceUid_.size() == 0)
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53 {
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54 throw OrthancException(ErrorCode_BadFileFormat);
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55 }
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56 }
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57
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58 DicomInstanceHasher::DicomInstanceHasher(const DicomMap& instance)
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59 {
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60 Setup(instance.GetValue(DICOM_TAG_PATIENT_ID).AsString(),
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61 instance.GetValue(DICOM_TAG_STUDY_INSTANCE_UID).AsString(),
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62 instance.GetValue(DICOM_TAG_SERIES_INSTANCE_UID).AsString(),
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63 instance.GetValue(DICOM_TAG_SOP_INSTANCE_UID).AsString());
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64 }
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65
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66 const std::string& DicomInstanceHasher::HashPatient()
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67 {
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68 if (patientHash_.size() == 0)
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69 {
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70 Toolbox::ComputeSHA1(patientHash_, patientId_);
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71 }
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72
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73 return patientHash_;
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74 }
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75
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76 const std::string& DicomInstanceHasher::HashStudy()
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77 {
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78 if (studyHash_.size() == 0)
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79 {
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80 Toolbox::ComputeSHA1(studyHash_, patientId_ + "|" + studyUid_);
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81 }
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82
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83 return studyHash_;
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84 }
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85
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86 const std::string& DicomInstanceHasher::HashSeries()
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87 {
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88 if (seriesHash_.size() == 0)
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89 {
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90 Toolbox::ComputeSHA1(seriesHash_, patientId_ + "|" + studyUid_ + "|" + seriesUid_);
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91 }
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92
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93 return seriesHash_;
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94 }
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95
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96 const std::string& DicomInstanceHasher::HashInstance()
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97 {
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98 if (instanceHash_.size() == 0)
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99 {
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100 Toolbox::ComputeSHA1(instanceHash_, patientId_ + "|" + studyUid_ + "|" + seriesUid_ + "|" + instanceUid_);
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101 }
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102
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103 return instanceHash_;
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104 }
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105 }
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