--- a/CMakeLists.txt	Mon Jun 16 15:39:16 2014 +0200
+++ b/CMakeLists.txt	Mon Jun 16 15:41:13 2014 +0200
@@ -114,6 +114,9 @@
   OrthancCppClient/Series.cpp
   OrthancCppClient/Instance.cpp
   OrthancCppClient/Patient.cpp
+
+  Plugins/Engine/SharedLibrary.cpp
+  Plugins/Engine/PluginsManager.cpp
   )
 
 
@@ -168,6 +171,7 @@
   UnitTestsSources/UnitTestsMain.cpp
   UnitTestsSources/ImageProcessingTests.cpp
   UnitTestsSources/JpegLossless.cpp
+  UnitTestsSources/PluginsTests.cpp
   )
 
 

--- a/Core/Enumerations.h	Mon Jun 16 15:39:16 2014 +0200
+++ b/Core/Enumerations.h	Mon Jun 16 15:41:13 2014 +0200
@@ -71,7 +71,8 @@
     ErrorCode_InexistentTag,
     ErrorCode_ReadOnly,
     ErrorCode_IncompatibleImageFormat,
-    ErrorCode_IncompatibleImageSize
+    ErrorCode_IncompatibleImageSize,
+    ErrorCode_SharedLibrary
   };
 
   /**

--- a/Core/OrthancException.cpp	Mon Jun 16 15:39:16 2014 +0200
+++ b/Core/OrthancException.cpp	Mon Jun 16 15:41:13 2014 +0200
@@ -121,6 +121,9 @@
       case ErrorCode_IncompatibleImageFormat:
         return "Incompatible format of the images";
 
+      case ErrorCode_SharedLibrary:
+        return "Error while using a shared library (plugin)";
+
       case ErrorCode_Custom:
       default:
         return "???";

--- a/Core/Toolbox.cpp	Mon Jun 16 15:39:16 2014 +0200
+++ b/Core/Toolbox.cpp	Mon Jun 16 15:41:13 2014 +0200
@@ -845,5 +845,12 @@
       }
     }
   }
+
+
+  bool Toolbox::IsExistingFile(const std::string& path)
+  {
+    return boost::filesystem::exists(path);
+  }
+
 }
 

--- a/Core/Toolbox.h	Mon Jun 16 15:39:16 2014 +0200
+++ b/Core/Toolbox.h	Mon Jun 16 15:41:13 2014 +0200
@@ -130,5 +130,7 @@
                              const std::string& source);
 
     void CreateDirectory(const std::string& path);
+
+    bool IsExistingFile(const std::string& path);
   }
 }

--- a/OrthancServer/OrthancRestApi/OrthancRestArchive.cpp	Mon Jun 16 15:39:16 2014 +0200
+++ b/OrthancServer/OrthancRestApi/OrthancRestArchive.cpp	Mon Jun 16 15:41:13 2014 +0200
@@ -38,6 +38,7 @@
 #include "../../Core/Uuid.h"
 
 #include <glog/logging.h>
+#include <stdio.h>
 
 #if defined(_MSC_VER)
 #define snprintf _snprintf

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugins/Engine/PluginsManager.cpp	Mon Jun 16 15:41:13 2014 +0200
@@ -0,0 +1,244 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "PluginsManager.h"
+
+#include <glog/logging.h>
+#include <cassert>
+#include <memory>
+#include <boost/filesystem.hpp>
+
+#ifdef WIN32
+#define PLUGIN_EXTENSION ".dll"
+#elif defined(__linux)
+#define PLUGIN_EXTENSION ".so"
+#else
+#error Support your platform here
+#endif
+
+
+namespace Orthanc
+{
+  static void CallInitialize(SharedLibrary& plugin,
+                             const OrthancPluginContext& context)
+  {
+    typedef int32_t (*Initialize) (const OrthancPluginContext*);
+
+    /**
+     * gcc would complain about "ISO C++ forbids casting between
+     * pointer-to-function and pointer-to-object" without the trick
+     * below, that is known as "the POSIX.1-2003 (Technical Corrigendum
+     * 1) workaround". See the man page of "dlsym()".
+     * http://www.trilithium.com/johan/2004/12/problem-with-dlsym/
+     * http://stackoverflow.com/a/14543811/881731
+     **/
+
+    Initialize initialize;
+    *(void **) (&initialize) = plugin.GetFunction("OrthancPluginInitialize");
+    assert(initialize != NULL);
+
+    int32_t error = initialize(&context);
+
+    if (error != 0)
+    {
+      LOG(ERROR) << "Error while initializing plugin " << plugin.GetPath()
+                 << " (code " << error << ")";
+      throw OrthancException(ErrorCode_SharedLibrary);
+    }
+  }
+
+
+  static void CallFinalize(SharedLibrary& plugin)
+  {
+    typedef void (*Finalize) ();
+
+    Finalize finalize;
+    *(void **) (&finalize) = plugin.GetFunction("OrthancPluginFinalize");
+    assert(finalize != NULL);
+
+    finalize();
+  }
+
+
+  static const char* CallGetName(SharedLibrary& plugin)
+  {
+    typedef const char* (*GetName) ();
+
+    GetName getName;
+    *(void **) (&getName) = plugin.GetFunction("OrthancPluginGetName");
+    assert(getName != NULL);
+
+    return getName();
+  }
+
+
+  static const char* CallGetVersion(SharedLibrary& plugin)
+  {
+    typedef const char* (*GetVersion) ();
+
+    GetVersion getVersion;
+    *(void **) (&getVersion) = plugin.GetFunction("OrthancPluginGetVersion");
+    assert(getVersion != NULL);
+
+    return getVersion();
+  }
+
+
+  static void LogError(const char* str)
+  {
+    LOG(ERROR) << str;
+  }
+
+  static void LogWarning(const char* str)
+  {
+    LOG(WARNING) << str;
+  }
+
+  static void LogInfo(const char* str)
+  {
+    LOG(INFO) << str;
+  }
+
+  static int32_t InvokeService(const char* serviceName,
+                               const void* serviceParameters)
+  {
+    // TODO
+    return 0;
+  }
+
+  PluginsManager::PluginsManager()
+  {
+    context_.orthancVersion = ORTHANC_VERSION;
+    context_.InvokeService = InvokeService;
+    context_.LogError = LogError;
+    context_.LogWarning = LogWarning;
+    context_.LogInfo = LogInfo;
+  }
+
+  PluginsManager::~PluginsManager()
+  {
+    for (Plugins::iterator it = plugins_.begin(); it != plugins_.end(); it++)
+    {
+      if (it->second != NULL)
+      {
+        CallFinalize(*(it->second));
+        delete it->second;
+      }
+    }
+  }
+
+
+  static bool IsOrthancPlugin(SharedLibrary& library)
+  {
+    return (library.HasFunction("OrthancPluginInitialize") &&
+            library.HasFunction("OrthancPluginFinalize") &&
+            library.HasFunction("OrthancPluginGetName") &&
+            library.HasFunction("OrthancPluginGetVersion"));
+  }
+
+  
+  void PluginsManager::RegisterPlugin(const std::string& path)
+  {
+    std::auto_ptr<SharedLibrary> plugin(new SharedLibrary(path));
+
+    if (!IsOrthancPlugin(*plugin))
+    {
+      LOG(ERROR) << "Plugin " << plugin->GetPath()
+                 << " does not declare the proper entry functions";
+      throw OrthancException(ErrorCode_SharedLibrary);
+    }
+
+    std::string name(CallGetName(*plugin));
+    if (plugins_.find(name) != plugins_.end())
+    {
+      LOG(ERROR) << "Plugin '" << name << "' already registered";
+      throw OrthancException(ErrorCode_SharedLibrary);
+    }
+
+    LOG(WARNING) << "Registering plugin '" << name
+                 << "' (version " << CallGetVersion(*plugin) << ")";
+
+    CallInitialize(*plugin, context_);
+
+    plugins_[name] = plugin.release();
+  }
+
+
+  void PluginsManager::ScanFolderForPlugins(const std::string& folder,
+                                            bool isRecursive)
+  {
+    using namespace boost::filesystem;
+
+    if (!exists(folder))
+    {
+      return;
+    }
+
+    LOG(INFO) << "Scanning folder " << folder << " for plugins";
+
+    directory_iterator end_it; // default construction yields past-the-end
+    for (directory_iterator it(folder);
+          it != end_it;
+          ++it)
+    {
+      std::string path = it->path().string();
+
+      if (is_directory(it->status()))
+      {
+        if (isRecursive)
+        {
+          ScanFolderForPlugins(path, true);
+        }
+      }
+      else
+      {
+        if (boost::filesystem::extension(it->path()) == PLUGIN_EXTENSION)
+        {
+          LOG(INFO) << "Found a shared library: " << it->path();
+
+          try
+          {
+            SharedLibrary plugin(path);
+            if (IsOrthancPlugin(plugin))
+            {
+              RegisterPlugin(path);
+            }
+          }
+          catch (OrthancException&)
+          {
+          }
+        }
+      }
+    }
+  }
+
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugins/Engine/PluginsManager.h	Mon Jun 16 15:41:13 2014 +0200
@@ -0,0 +1,60 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "SharedLibrary.h"
+#include "../OrthancCPlugin/OrthancCPlugin.h"
+
+#include <map>
+
+namespace Orthanc
+{
+  class PluginsManager : boost::noncopyable
+  {
+  private:
+    typedef std::map<std::string, SharedLibrary*>  Plugins;
+
+    OrthancPluginContext  context_;
+    Plugins  plugins_;
+
+  public:
+    PluginsManager();
+
+    ~PluginsManager();
+
+    void RegisterPlugin(const std::string& path);
+
+    void ScanFolderForPlugins(const std::string& path,
+                              bool isRecursive);
+  };
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugins/Engine/SharedLibrary.cpp	Mon Jun 16 15:41:13 2014 +0200
@@ -0,0 +1,133 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "SharedLibrary.h"
+
+#include "../../Core/Toolbox.h"
+
+#if defined(_WIN32)
+#include <windows.h>
+#elif defined(__linux)
+#include <dlfcn.h>
+#else
+#error Support your platform here
+#endif
+
+#include <glog/logging.h>
+
+namespace Orthanc
+{
+  SharedLibrary::SharedLibrary(const std::string& path) : 
+    path_(path),
+    handle_(NULL)
+  {
+#if defined(_WIN32)
+    handle_ = ::LoadLibraryA(path.c_str());
+    if (handle == NULL)
+    {
+      LOG(ERROR) << "LoadLibrary(" << path << ") failed: Error " << ::GetLastError();
+      throw OrthancException(ErrorCode_SharedLibrary);
+    }
+
+#elif defined(__linux)
+    handle_ = ::dlopen(path.c_str(), RTLD_NOW);
+    if (handle_ == NULL) 
+    {
+      std::string explanation;
+      const char *tmp = ::dlerror();
+      if (tmp)
+      {
+        explanation = ": Error " + std::string(tmp);
+      }
+
+      LOG(ERROR) << "dlopen(" << path << ") failed" << explanation;
+      throw OrthancException(ErrorCode_SharedLibrary);
+    }
+
+#else
+#error Support your platform here
+#endif   
+  }
+
+  SharedLibrary::~SharedLibrary()
+  {
+    if (handle_)
+    {
+#if defined(_WIN32)
+      ::FreeLibrary((HMODULE)handle_);
+#elif defined(__linux)
+      ::dlclose(handle_);
+#else
+#error Support your platform here
+#endif
+    }
+  }
+
+
+  void* SharedLibrary::GetFunctionInternal(const std::string& name)
+  {
+    if (!handle_)
+    {
+      throw OrthancException(ErrorCode_InternalError);
+    }
+
+#if defined(_WIN32)
+    return ::GetProcAddress((HMODULE)handle_, name.c_str());
+#elif defined(__linux)
+    return ::dlsym(handle_, name.c_str());
+#else
+#error Support your platform here
+#endif
+  }
+
+
+  void* SharedLibrary::GetFunction(const std::string& name)
+  {
+    void* result = GetFunctionInternal(name);
+  
+    if (result == NULL)
+    {
+      LOG(ERROR) << "Shared library does not expose function \"" << name << "\"";
+      throw OrthancException(ErrorCode_SharedLibrary);
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  bool SharedLibrary::HasFunction(const std::string& name)
+  {
+    return GetFunctionInternal(name) != NULL;
+  }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugins/Engine/SharedLibrary.h	Mon Jun 16 15:41:13 2014 +0200
@@ -0,0 +1,63 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "../../Core/OrthancException.h"
+
+#include <boost/noncopyable.hpp>
+
+namespace Orthanc
+{
+  class SharedLibrary : boost::noncopyable
+  {
+  private:
+    std::string path_;
+    void *handle_;
+
+    void* GetFunctionInternal(const std::string& name);
+
+  public:
+    SharedLibrary(const std::string& path);
+
+    ~SharedLibrary();
+
+    const std::string& GetPath() const
+    {
+      return path_;
+    }
+
+    bool HasFunction(const std::string& name);
+
+    void* GetFunction(const std::string& name);
+  };
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugins/OrthancCPlugin/OrthancCPlugin.h	Mon Jun 16 15:41:13 2014 +0200
@@ -0,0 +1,92 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+
+#ifdef _MSC_VER
+#include "../../Resources/VisualStudio/stdint.h"
+#else
+#include <stdint.h>
+#endif
+
+
+#ifdef WIN32
+#define ORTHANC_PLUGINS_API __declspec(dllexport)
+#else
+#define ORTHANC_PLUGINS_API
+#endif
+
+
+#include <stdlib.h>
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+  typedef void (*OrthancPluginLogError) (const char* str);
+
+  typedef void (*OrthancPluginLogWarning) (const char* str);
+
+  typedef void (*OrthancPluginLogInfo) (const char* str);
+
+  typedef int32_t (*OrthancPluginService) (const char* serviceName,
+                                           const void* serviceParameters);
+
+  typedef struct OrthancPluginContext
+  {
+    const char* orthancVersion;
+    OrthancPluginService InvokeService;
+    OrthancPluginLogError LogError;
+    OrthancPluginLogWarning LogWarning;
+    OrthancPluginLogInfo LogInfo;
+
+    /* TODO REGISTER */
+
+  } OrthancPluginContext;
+
+
+  /**
+     Each plugin must define 4 functions, whose signature is:
+     - int32_t OrthancPluginInitialize(const OrthancPluginContext*);
+     - void OrthancPluginFinalize();
+     - const char* OrthancPluginGetName();
+     - const char* OrthancPluginGetVersion();
+
+     nm -C -D --defined-only libPluginTest.so
+   **/
+
+#ifdef  __cplusplus
+}
+#endif

--- a/Resources/Configuration.json	Mon Jun 16 15:39:16 2014 +0200
+++ b/Resources/Configuration.json	Mon Jun 16 15:41:13 2014 +0200
@@ -33,6 +33,9 @@
   "LuaScripts" : [
   ],
 
+  "Plugins" : [
+    
+  ],
 
 
   /**

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Resources/Samples/Plugins/Basic/CMakeLists.txt	Mon Jun 16 15:41:13 2014 +0200
@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 2.8)
+
+project(Basic)
+
+add_library(PluginTest SHARED Plugin.c)
+
+if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+  # Linking with "pthread" is necessary, otherwise the software crashes
+  # http://sourceware.org/bugzilla/show_bug.cgi?id=10652#c17
+  target_link_libraries(PluginTest pthread dl)
+endif()

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Resources/Samples/Plugins/Basic/Plugin.c	Mon Jun 16 15:41:13 2014 +0200
@@ -0,0 +1,66 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ **/
+
+
+#include "../../../../Plugins/OrthancCPlugin/OrthancCPlugin.h"
+
+#include <string.h>
+#include <stdio.h>
+
+static const OrthancPluginContext* context = NULL;
+
+
+ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(const OrthancPluginContext* c)
+{
+  context = c;
+  context->LogWarning("Plugin is initializing");
+
+  char info[1024];
+  sprintf(info, "The version of Orthanc is '%s'", context->orthancVersion);
+
+  context->LogInfo(info);
+
+  return 0;
+}
+
+
+ORTHANC_PLUGINS_API void OrthancPluginFinalize()
+{
+  context->LogWarning("Plugin is finalizing");
+}
+
+
+ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
+{
+  return "sample";
+}
+
+
+ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
+{
+  return "1.0";
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/UnitTestsSources/PluginsTests.cpp	Mon Jun 16 15:41:13 2014 +0200
@@ -0,0 +1,77 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "PrecompiledHeadersUnitTests.h"
+#include "gtest/gtest.h"
+
+#include <glog/logging.h>
+
+#include "../Plugins/Engine/PluginsManager.h"
+
+using namespace Orthanc;
+
+TEST(SharedLibrary, Basic)
+{
+#if defined(_WIN32)
+#error Support your platform here
+
+#elif defined(__linux)
+  SharedLibrary l("libdl.so");
+  ASSERT_THROW(l.GetFunction("world"), OrthancException);
+  ASSERT_TRUE(l.GetFunction("dlopen") != NULL);
+  ASSERT_TRUE(l.HasFunction("dlclose"));
+  ASSERT_FALSE(l.HasFunction("world"));
+
+#else
+#error Support your platform here
+#endif
+
+}
+
+
+TEST(SharedLibrary, Development)
+{
+  PluginsManager manager;
+
+#if defined(_WIN32)
+#error Support your platform here
+
+#elif defined(__linux)
+  //manager.RegisterPlugin("./libPluginTest.so");
+  //ASSERT_THROW(manager.RegisterPlugin("./libPluginTest.so"), OrthancException);
+
+  manager.ScanFolderForPlugins(".", true);
+
+#else
+#error Support your platform here
+#endif  
+}