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1 #!/usr/bin/python
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2
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3 # Orthanc - A Lightweight, RESTful DICOM Store
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4 # Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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5 # Department, University Hospital of Liege, Belgium
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6 #
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7 # This program is free software: you can redistribute it and/or
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8 # modify it under the terms of the GNU General Public License as
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9 # published by the Free Software Foundation, either version 3 of the
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10 # License, or (at your option) any later version.
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11 #
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12 # This program is distributed in the hope that it will be useful, but
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13 # WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 # General Public License for more details.
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16 #
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17 # You should have received a copy of the GNU General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20
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21
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22 import time
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23 import sys
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24 import RestToolbox
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25 import md5
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26
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27
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28 ##
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29 ## Print help message
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30 ##
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31
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32 if len(sys.argv) != 3:
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33 print("""
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34 Sample script that anonymizes patients in real-time. A patient gets
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35 anonymized as soon as she gets stable (i.e. when no DICOM instance has
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36 been received for this patient for a sufficient amount of time - cf.
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37 the configuration option "StableAge").
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38
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39 Usage: %s [hostname] [HTTP port]
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40 For instance: %s localhost 8042
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41 """ % (sys.argv[0], sys.argv[0]))
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42 exit(-1)
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43
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44 URL = 'http://%s:%d' % (sys.argv[1], int(sys.argv[2]))
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45
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46
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47
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48 ##
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49 ## The following function is called whenever a patient gets stable
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50 ##
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51
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52 COUNT = 1
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53
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54 def AnonymizePatient(path):
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55 global URL
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56 global COUNT
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57
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58 patient = RestToolbox.DoGet(URL + path)
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59 patientID = patient['MainDicomTags']['PatientID']
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60
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61 # Ignore anonymized patients
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62 if not 'AnonymizedFrom' in patient:
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63 print('Patient with ID "%s" is stabilized: anonymizing it...' % (patientID))
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64
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65 # The PatientID after anonymization is taken as the 8 first
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66 # characters from the MD5 hash of the original PatientID
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67 anonymizedID = md5.new(patientID).hexdigest()[:8]
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68 anonymizedName = 'Anonymized patient %d' % COUNT
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69 COUNT += 1
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70
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71 RestToolbox.DoPost(URL + path + '/anonymize',
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72 { 'Replace' : { 'PatientID' : anonymizedID,
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73 'PatientName' : anonymizedName } })
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74
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75 # Delete the source patient after the anonymization
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76 RestToolbox.DoDelete(URL + change['Path'])
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77
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78
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79
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80 ##
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81 ## Main loop that listens to the changes API.
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82 ##
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83
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84 current = 0
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85 while True:
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86 r = RestToolbox.DoGet(URL + '/changes', {
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87 'since' : current,
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88 'limit' : 4 # Retrieve at most 4 changes at once
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89 })
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90
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91 for change in r['Changes']:
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92 if change['ChangeType'] == 'StablePatient':
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93 AnonymizePatient(change['Path'])
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94
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95 current = r['Last']
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96
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97 if r['Done']:
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98 print('Everything has been processed: Waiting...')
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99 time.sleep(1)
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