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1 /**
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2 * SPDX-FileCopyrightText: 2023 Sebastien Jodogne, UCLouvain, Belgium
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3 * SPDX-License-Identifier: GPL-3.0-or-later
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4 */
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5
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6 /**
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7 * Kitware's VolView plugin for Orthanc
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8 * Copyright (C) 2023 Sebastien Jodogne, UCLouvain, Belgium
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9 *
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10 * This program is free software: you can redistribute it and/or
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11 * modify it under the terms of the GNU General Public License as
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12 * published by the Free Software Foundation, either version 3 of the
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13 * License, or (at your option) any later version.
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14 *
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15 * This program is distributed in the hope that it will be useful, but
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16 * WITHOUT ANY WARRANTY; without even the implied warranty of
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17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 * General Public License for more details.
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19 *
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20 * You should have received a copy of the GNU General Public License
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21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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22 **/
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23
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24
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25 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h"
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26
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27 #include <Logging.h>
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28 #include <SystemToolbox.h>
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29
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30 #include <EmbeddedResources.h>
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31
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32 #include <boost/thread/shared_mutex.hpp>
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33
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34 // Forward declaration
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35 void ReadStaticAsset(std::string& target,
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36 const std::string& path);
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37
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38
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39 /**
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40 * As the VolView static assets are gzipped by the "EmbedResources.py"
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41 * script, we use a cache to maintain the uncompressed assets in order
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42 * to avoid multiple gzip decodings.
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43 **/
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44 class ResourcesCache : public boost::noncopyable
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45 {
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46 private:
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47 typedef std::map<std::string, std::string*> Content;
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48
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49 boost::shared_mutex mutex_;
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50 Content content_;
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51
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52 public:
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53 ~ResourcesCache()
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54 {
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55 for (Content::iterator it = content_.begin(); it != content_.end(); ++it)
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56 {
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57 assert(it->second != NULL);
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58 delete it->second;
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59 }
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60 }
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61
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62 void Answer(OrthancPluginRestOutput* output,
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63 const std::string& path)
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64 {
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65 const std::string mime = Orthanc::EnumerationToString(Orthanc::SystemToolbox::AutodetectMimeType(path));
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66
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67 {
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68 // Check whether the cache already contains the resource
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69 boost::shared_lock<boost::shared_mutex> lock(mutex_);
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70
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71 Content::const_iterator found = content_.find(path);
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72
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73 if (found != content_.end())
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74 {
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75 assert(found->second != NULL);
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76 OrthancPluginAnswerBuffer(OrthancPlugins::GetGlobalContext(), output, found->second->c_str(), found->second->size(), mime.c_str());
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77 return;
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78 }
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79 }
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80
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81 // This resource has not been cached yet
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82
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83 std::unique_ptr<std::string> item(new std::string);
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84 ReadStaticAsset(*item, path);
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85 OrthancPluginAnswerBuffer(OrthancPlugins::GetGlobalContext(), output, item->c_str(), item->size(), mime.c_str());
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86
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87 {
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88 // Store the resource into the cache
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89 boost::unique_lock<boost::shared_mutex> lock(mutex_);
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90
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91 if (content_.find(path) == content_.end())
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92 {
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93 content_[path] = item.release();
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94 }
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95 }
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96 }
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97 };
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98
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99
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100 static ResourcesCache cache_;
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101
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102 void ServeFile(OrthancPluginRestOutput* output,
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103 const char* url,
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104 const OrthancPluginHttpRequest* request)
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105 {
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106 cache_.Answer(output, request->groups[0]);
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107 }
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108
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109 extern "C"
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110 {
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111 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context)
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112 {
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113 OrthancPlugins::SetGlobalContext(context);
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114
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115 /* Check the version of the Orthanc core */
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116 if (OrthancPluginCheckVersion(OrthancPlugins::GetGlobalContext()) == 0)
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117 {
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118 char info[1024];
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119 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin",
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120 OrthancPlugins::GetGlobalContext()->orthancVersion,
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121 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
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122 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
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123 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
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124 OrthancPluginLogError(OrthancPlugins::GetGlobalContext(), info);
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125 return -1;
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126 }
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127
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128 #if ORTHANC_FRAMEWORK_VERSION_IS_ABOVE(1, 7, 2)
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129 Orthanc::Logging::InitializePluginContext(context);
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130 #else
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131 Orthanc::Logging::Initialize(context);
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132 #endif
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133
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134 OrthancPluginSetDescription(context, "Kitware's VolView for Orthanc.");
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135
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136 OrthancPlugins::RegisterRestCallback<ServeFile>("/volview/(.*)", true);
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137
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138 // Extend the default Orthanc Explorer with custom JavaScript for VolView
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139 std::string explorer;
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140 Orthanc::EmbeddedResources::GetFileResource(explorer, Orthanc::EmbeddedResources::ORTHANC_EXPLORER);
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141 OrthancPluginExtendOrthancExplorer(OrthancPlugins::GetGlobalContext(), explorer.c_str());
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142
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143 return 0;
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144 }
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145
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146
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147 ORTHANC_PLUGINS_API void OrthancPluginFinalize()
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148 {
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149 }
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150
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151
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152 ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
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153 {
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154 return "volview";
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155 }
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156
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157
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158 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
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159 {
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160 return ORTHANC_VOLVIEW_VERSION;
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161 }
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162 }
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