--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/StoneWebViewer/Plugin/Plugin.cpp	Thu Jun 25 16:51:10 2020 +0200
@@ -0,0 +1,235 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include <OrthancPluginCppWrapper.h>
+#include <EmbeddedResources.h>
+
+#include <SystemToolbox.h>
+#include <Toolbox.h>
+
+OrthancPluginErrorCode OnChangeCallback(OrthancPluginChangeType changeType,
+                                        OrthancPluginResourceType resourceType,
+                                        const char* resourceId)
+{
+  try
+  {
+    if (changeType == OrthancPluginChangeType_OrthancStarted)
+    {
+      Json::Value info;
+      if (!OrthancPlugins::RestApiGet(info, "/plugins/dicom-web", false))
+      {
+        throw Orthanc::OrthancException(
+          Orthanc::ErrorCode_InternalError,
+          "The Stone Web viewer requires the DICOMweb plugin to be installed");
+      }
+
+      if (info.type() != Json::objectValue ||
+          !info.isMember("ID") ||
+          !info.isMember("Version") ||
+          info["ID"].type() != Json::stringValue ||
+          info["Version"].type() != Json::stringValue ||
+          info["ID"].asString() != "dicom-web")
+      {
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
+                                        "The DICOMweb plugin is not properly installed");
+      }
+
+      std::string version = info["Version"].asString();
+      if (version != "mainline")
+      {
+        std::vector<std::string> tokens;
+        Orthanc::Toolbox::TokenizeString(tokens, version, '.');
+        if (tokens.size() != 2)
+        {
+          throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
+                                          "Bad version of the DICOMweb plugin: " + version);
+        }
+
+        int major, minor;
+        
+        try
+        {
+          major = boost::lexical_cast<int>(tokens[0]);
+          minor = boost::lexical_cast<int>(tokens[1]);
+        }
+        catch (boost::bad_lexical_cast&)
+        {
+          throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
+                                          "Bad version of the DICOMweb plugin: " + version);
+        }
+
+        if (major <= 0 ||
+            (major == 1 && minor <= 1))
+        {
+          throw Orthanc::OrthancException(
+            Orthanc::ErrorCode_InternalError,
+            "The Stone Web viewer requires DICOMweb plugin with version >= 1.2, found: " + version);
+        }
+
+        if (major <= 0 ||
+            (major == 1 && minor == 2))
+        {
+          /**
+           * DICOMweb 1.3 is better than 1.2 for 2 reasons: (1)
+           * MONOCHROME1 images are not properly rendered in DICOMweb
+           * 1.2, and (2) DICOMweb 1.2 cannot transcode images (this
+           * causes issues on JPEG2k images).
+           **/
+          LOG(WARNING) << "The Stone Web viewer has some incompatibilities "
+                       << "with DICOMweb plugin 1.2, consider upgrading the DICOMweb plugin";
+        }
+      }
+    }
+  }
+  catch (Orthanc::OrthancException& e)
+  {
+    LOG(ERROR) << "Exception: " << e.What();
+    return static_cast<OrthancPluginErrorCode>(e.GetErrorCode());
+  }
+
+  return OrthancPluginErrorCode_Success;
+}
+    
+
+template <enum Orthanc::EmbeddedResources::DirectoryResourceId folder>
+void ServeEmbeddedFolder(OrthancPluginRestOutput* output,
+                         const char* url,
+                         const OrthancPluginHttpRequest* request)
+{
+  OrthancPluginContext* context = OrthancPlugins::GetGlobalContext();
+
+  if (request->method != OrthancPluginHttpMethod_Get)
+  {
+    OrthancPluginSendMethodNotAllowed(context, output, "GET");
+  }
+  else
+  {
+    std::string path = "/" + std::string(request->groups[0]);
+    const char* mime = Orthanc::EnumerationToString(Orthanc::SystemToolbox::AutodetectMimeType(path));
+
+    std::string s;
+    Orthanc::EmbeddedResources::GetDirectoryResource(s, folder, path.c_str());
+
+    const char* resource = s.size() ? s.c_str() : NULL;
+    OrthancPluginAnswerBuffer(context, output, resource, s.size(), mime);
+  }
+}
+
+
+template <enum Orthanc::EmbeddedResources::FileResourceId file>
+void ServeEmbeddedFile(OrthancPluginRestOutput* output,
+                       const char* url,
+                       const OrthancPluginHttpRequest* request)
+{
+  OrthancPluginContext* context = OrthancPlugins::GetGlobalContext();
+
+  if (request->method != OrthancPluginHttpMethod_Get)
+  {
+    OrthancPluginSendMethodNotAllowed(context, output, "GET");
+  }
+  else
+  {
+    const char* mime = Orthanc::EnumerationToString(Orthanc::SystemToolbox::AutodetectMimeType(url));
+
+    std::string s;
+    Orthanc::EmbeddedResources::GetFileResource(s, file);
+
+    const char* resource = s.size() ? s.c_str() : NULL;
+    OrthancPluginAnswerBuffer(context, output, resource, s.size(), mime);
+  }
+}
+
+
+extern "C"
+{
+  ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context)
+  {
+    OrthancPlugins::SetGlobalContext(context);
+    Orthanc::Logging::InitializePluginContext(context);
+
+    /* Check the version of the Orthanc core */
+    if (OrthancPluginCheckVersion(context) == 0)
+    {
+      char info[1024];
+      sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin",
+              context->orthancVersion,
+              ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
+              ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
+              ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
+      OrthancPluginLogError(context, info);
+      return -1;
+    }
+
+    try
+    {
+      std::string explorer;
+      Orthanc::EmbeddedResources::GetFileResource(
+        explorer, Orthanc::EmbeddedResources::ORTHANC_EXPLORER);
+      OrthancPluginExtendOrthancExplorer(OrthancPlugins::GetGlobalContext(), explorer.c_str());
+      
+      OrthancPlugins::RegisterRestCallback
+        <ServeEmbeddedFile<Orthanc::EmbeddedResources::STONE_WEB_VIEWER_WASM> >
+        ("/stone-webviewer/StoneWebViewer.wasm", true);
+      
+      OrthancPlugins::RegisterRestCallback
+        <ServeEmbeddedFile<Orthanc::EmbeddedResources::STONE_WEB_VIEWER_JS> >
+        ("/stone-webviewer/StoneWebViewer.js", true);
+      
+      OrthancPlugins::RegisterRestCallback
+        <ServeEmbeddedFile<Orthanc::EmbeddedResources::STONE_WRAPPER> >
+        ("/stone-webviewer/stone.js", true);
+      
+      OrthancPlugins::RegisterRestCallback
+        <ServeEmbeddedFolder<Orthanc::EmbeddedResources::IMAGES> >
+        ("/stone-webviewer/img/(.*)", true);
+
+      OrthancPlugins::RegisterRestCallback
+        <ServeEmbeddedFolder<Orthanc::EmbeddedResources::WEB_APPLICATION> >
+        ("/stone-webviewer/(.*)", true);
+
+      OrthancPluginRegisterOnChangeCallback(context, OnChangeCallback);
+    }
+    catch (...)
+    {
+      OrthancPlugins::LogError("Exception while initializing the Stone Web viewer plugin");
+      return -1;
+    }
+
+    return 0;
+  }
+
+
+  ORTHANC_PLUGINS_API void OrthancPluginFinalize()
+  {
+  }
+
+
+  ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
+  {
+    return PLUGIN_NAME;
+  }
+
+
+  ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
+  {
+    return PLUGIN_VERSION;
+  }
+}