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1 /**
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2 * Google Cloud Platform credentials for DICOMweb and Orthanc
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3 * Copyright (C) 2019 Osimis S.A., Belgium
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4 *
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5 * This program is free software: you can redistribute it and/or
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6 * modify it under the terms of the GNU General Public License as
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7 * published by the Free Software Foundation, either version 3 of the
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8 * License, or (at your option) any later version.
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9 *
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10 * In addition, as a special exception, the copyright holders of this
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11 * program give permission to link the code of its release with the
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12 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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13 * that use the same license as the "OpenSSL" library), and distribute
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14 * the linked executables. You must obey the GNU General Public License
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15 * in all respects for all of the code used other than "OpenSSL". If you
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16 * modify file(s) with this exception, you may extend this exception to
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17 * your version of the file(s), but you are not obligated to do so. If
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18 * you do not wish to do so, delete this exception statement from your
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19 * version. If you delete this exception statement from all source files
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20 * in the program, then also delete it here.
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21 *
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22 * This program is distributed in the hope that it will be useful, but
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23 * WITHOUT ANY WARRANTY; without even the implied warranty of
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24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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25 * General Public License for more details.
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26 *
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27 * You should have received a copy of the GNU General Public License
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28 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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29 **/
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30
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31
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32 #include "GoogleConfiguration.h"
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33 #include "GoogleUpdater.h"
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34
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35 #include <Core/HttpClient.h>
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36 #include <Core/Toolbox.h>
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37 #include <Plugins/Samples/Common/OrthancPluginCppWrapper.h>
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38
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39
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40 static bool CheckDicomWebVersion()
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41 {
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42 Json::Value dicomweb;
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43 if (!OrthancPlugins::RestApiGet(dicomweb, "/plugins/dicom-web", false))
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44 {
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45 LOG(ERROR) << "The DICOMweb plugin is not installed, cannot start Google Cloud Platform plugin";
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46 return false;
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47 }
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48 else if (dicomweb.type() != Json::objectValue ||
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49 !dicomweb.isMember("Version") ||
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50 dicomweb["Version"].type() != Json::stringValue)
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51 {
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52 LOG(ERROR) << "Cannot determine the version of the DICOMweb plugin, start Google Cloud Platform plugin";
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53 return false;
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54 }
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55 else
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56 {
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57 std::string version = dicomweb["Version"].asString();
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58
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59 std::vector<std::string> tokens;
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60 Orthanc::Toolbox::TokenizeString(tokens, version, '.');
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61
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62 bool ok = true;
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63
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64 if (tokens.size() == 2)
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65 {
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66 try
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67 {
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68 int major = boost::lexical_cast<int>(tokens[0]);
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69 int minor = boost::lexical_cast<int>(tokens[1]);
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70
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71 ok = (major >= 1 ||
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72 (major == 0 && minor >= 7));
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73 }
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74 catch (boost::bad_lexical_cast&)
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75 {
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76 ok = false;
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77 }
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78 }
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79
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80 if (!ok)
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81 {
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82 LOG(ERROR) << "The DICOMweb version (currently " << version
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83 << ") must be above 0.7 to use the Google Cloud Platform plugin";
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84 }
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85
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86 return ok;
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87 }
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88 }
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89
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90
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91 OrthancPluginErrorCode OnChangeCallback(OrthancPluginChangeType changeType,
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92 OrthancPluginResourceType resourceType,
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93 const char* resourceId)
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94 {
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95 try
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96 {
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97 switch (changeType)
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98 {
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99 case OrthancPluginChangeType_OrthancStarted:
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100 {
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101 if (CheckDicomWebVersion())
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102 {
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103 GoogleUpdater::GetInstance().Start();
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104 }
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105
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106 break;
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107 }
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108
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109 case OrthancPluginChangeType_OrthancStopped:
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110 GoogleUpdater::GetInstance().Stop();
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111 break;
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112
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113 default:
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114 break;
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115 }
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116 }
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117 catch (Orthanc::OrthancException& e)
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118 {
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119 LOG(ERROR) << "Exception in the change callback: " << e.What();
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120 return static_cast<OrthancPluginErrorCode>(e.GetErrorCode());
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121 }
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122
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123 return OrthancPluginErrorCode_Success;
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124 }
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125
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126
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127
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128 extern "C"
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129 {
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130 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context)
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131 {
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132 OrthancPlugins::SetGlobalContext(context);
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133 Orthanc::Logging::Initialize(context);
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134
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135 /* Check the version of the Orthanc core */
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136 if (OrthancPluginCheckVersion(context) == 0)
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137 {
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138 OrthancPlugins::ReportMinimalOrthancVersion(ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
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139 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
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140 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
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141 return -1;
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142 }
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143
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144 try
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145 {
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146 Orthanc::Toolbox::InitializeOpenSsl();
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147 Orthanc::HttpClient::GlobalInitialize();
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148
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149 GoogleConfiguration::GetInstance(); // Force the initialization of the singleton
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150
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151 OrthancPluginRegisterOnChangeCallback(context, OnChangeCallback);
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152 }
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153 catch (Orthanc::OrthancException& e)
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154 {
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155 OrthancPlugins::LogError("Error while initializing the Google Cloud Platform plugin: " +
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156 std::string(e.What()));
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157 return -1;
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158 }
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159
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160 return 0;
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161 }
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162
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163
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164 ORTHANC_PLUGINS_API void OrthancPluginFinalize()
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165 {
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166 try
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167 {
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168 GoogleUpdater::GetInstance().Stop();
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169 Orthanc::HttpClient::GlobalFinalize();
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170 Orthanc::Toolbox::FinalizeOpenSsl();
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171 }
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172 catch (Orthanc::OrthancException&)
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173 {
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174 }
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175 }
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176
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177
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178 ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
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179 {
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180 return "google-cloud-platform";
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181 }
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182
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183
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184 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
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185 {
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186 return GCP_PLUGIN_VERSION;
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187 }
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188 }
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