--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PalantirServer/PalantirInitialization.cpp	Thu Jul 19 14:32:22 2012 +0200
@@ -0,0 +1,184 @@
+/**
+ * Palantir - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012 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.
+ * 
+ * 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 "PalantirInitialization.h"
+
+#include "../Core/PalantirException.h"
+#include "../Core/Toolbox.h"
+
+#include <boost/lexical_cast.hpp>
+#include <boost/filesystem.hpp>
+#include <curl/curl.h>
+#include <boost/thread.hpp>
+
+namespace Palantir
+{
+  static const char* CONFIGURATION_FILE = "Configuration.json";
+
+  static boost::mutex globalMutex_;
+  static std::auto_ptr<Json::Value> configuration_;
+
+
+  static void ReadGlobalConfiguration(const char* configurationFile)
+  {
+    configuration_.reset(new Json::Value);
+
+    std::string content;
+
+    if (configurationFile)
+    {
+      Toolbox::ReadFile(content, configurationFile);
+    }
+    else
+    {
+#if PALANTIR_RELEASE == 0
+      boost::filesystem::path p = PALANTIR_PATH;
+      p /= "Resources";
+      p /= CONFIGURATION_FILE;
+      Toolbox::ReadFile(content, p.string());
+#else
+      Toolbox::ReadFile(content, CONFIGURATION_FILE);
+#endif
+    }
+
+    Json::Reader reader;
+    if (!reader.parse(content, *configuration_))
+    {
+      throw PalantirException("Unable to read the configuration file");
+    }
+  }
+
+
+  void PalantirInitialize(const char* configurationFile)
+  {
+    boost::mutex::scoped_lock lock(globalMutex_);
+    ReadGlobalConfiguration(configurationFile);
+    curl_global_init(CURL_GLOBAL_ALL);
+  }
+
+
+
+  void PalantirFinalize()
+  {
+    boost::mutex::scoped_lock lock(globalMutex_);
+    curl_global_cleanup();
+    configuration_.reset(NULL);
+  }
+
+
+
+  std::string GetGlobalStringParameter(const std::string& parameter,
+                                       const std::string& defaultValue)
+  {
+    boost::mutex::scoped_lock lock(globalMutex_);
+
+    if (configuration_->isMember(parameter))
+    {
+      return (*configuration_) [parameter].asString();
+    }
+    else
+    {
+      return defaultValue;
+    }
+  }
+
+
+  int GetGlobalIntegerParameter(const std::string& parameter,
+                                int defaultValue)
+  {
+    boost::mutex::scoped_lock lock(globalMutex_);
+
+    if (configuration_->isMember(parameter))
+    {
+      return (*configuration_) [parameter].asInt();
+    }
+    else
+    {
+      return defaultValue;
+    }
+  }
+
+
+
+  void GetDicomModality(const std::string& name,
+                        std::string& aet,
+                        std::string& address,
+                        int& port)
+  {
+    boost::mutex::scoped_lock lock(globalMutex_);
+
+    if (!configuration_->isMember("DicomModalities"))
+    {
+      throw PalantirException("");
+    }
+
+    const Json::Value& modalities = (*configuration_) ["DicomModalities"];
+    if (modalities.type() != Json::objectValue ||
+        !modalities.isMember(name))
+    {
+      throw PalantirException("");
+    }
+
+    try
+    {
+      aet = modalities[name].get(0u, "").asString();
+      address = modalities[name].get(1u, "").asString();
+      port = modalities[name].get(2u, "").asInt();
+    }
+    catch (...)
+    {
+      throw PalantirException("Badly formatted DICOM modality");
+    }
+  }
+
+
+
+  void GetListOfDicomModalities(std::set<std::string>& target)
+  {
+    boost::mutex::scoped_lock lock(globalMutex_);
+
+    target.clear();
+  
+    if (!configuration_->isMember("DicomModalities"))
+    {
+      return;
+    }
+
+    const Json::Value& modalities = (*configuration_) ["DicomModalities"];
+    if (modalities.type() != Json::objectValue)
+    {
+      throw PalantirException("Badly formatted list of DICOM modalities");
+    }
+
+    Json::Value::Members members = modalities.getMemberNames();
+    for (size_t i = 0; i < members.size(); i++)
+    {
+      for (size_t j = 0; j < members[i].size(); j++)
+      {
+        if (!isalnum(members[i][j]) && members[i][j] != '-')
+        {
+          throw PalantirException("Only alphanumeric and dash characters are allowed in the names of the modalities");
+        }
+      }
+
+      target.insert(members[i]);
+    }
+  }
+}