--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancServer/LuaScripting.cpp	Tue Jun 30 15:09:34 2015 +0200
@@ -0,0 +1,274 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital 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 "PrecompiledHeadersServer.h"
+#include "LuaScripting.h"
+
+#include "ServerContext.h"
+#include "OrthancInitialization.h"
+#include "../Core/Lua/LuaFunctionCall.h"
+
+#include "Scheduler/DeleteInstanceCommand.h"
+#include "Scheduler/StoreScuCommand.h"
+#include "Scheduler/StorePeerCommand.h"
+#include "Scheduler/ModifyInstanceCommand.h"
+#include "Scheduler/CallSystemCommand.h"
+#include "OrthancRestApi/OrthancRestApi.h"
+
+#include <glog/logging.h>
+#include <EmbeddedResources.h>
+
+static const char* RECEIVED_INSTANCE_FILTER = "ReceivedInstanceFilter";
+static const char* ON_STORED_INSTANCE = "OnStoredInstance";
+
+
+namespace Orthanc
+{
+  IServerCommand* LuaScripting::ParseOperation(const std::string& operation,
+                                               const Json::Value& parameters)
+  {
+    if (operation == "delete")
+    {
+      LOG(INFO) << "Lua script to delete instance " << parameters["Instance"].asString();
+      return new DeleteInstanceCommand(context_);
+    }
+
+    if (operation == "store-scu")
+    {
+      std::string localAet;
+      if (parameters.isMember("LocalAet"))
+      {
+        localAet = parameters["LocalAet"].asString();
+      }
+      else
+      {
+        localAet = context_.GetDefaultLocalApplicationEntityTitle();
+      }
+
+      std::string modality = parameters["Modality"].asString();
+      LOG(INFO) << "Lua script to send instance " << parameters["Instance"].asString()
+                << " to modality " << modality << " using Store-SCU";
+      return new StoreScuCommand(context_, localAet,
+                                 Configuration::GetModalityUsingSymbolicName(modality), true);
+    }
+
+    if (operation == "store-peer")
+    {
+      std::string peer = parameters["Peer"].asString();
+      LOG(INFO) << "Lua script to send instance " << parameters["Instance"].asString()
+                << " to peer " << peer << " using HTTP";
+
+      OrthancPeerParameters parameters;
+      Configuration::GetOrthancPeer(parameters, peer);
+      return new StorePeerCommand(context_, parameters, true);
+    }
+
+    if (operation == "modify")
+    {
+      LOG(INFO) << "Lua script to modify instance " << parameters["Instance"].asString();
+      DicomModification modification;
+      OrthancRestApi::ParseModifyRequest(modification, parameters);
+
+      std::auto_ptr<ModifyInstanceCommand> command(new ModifyInstanceCommand(context_, modification));
+      return command.release();
+    }
+
+    if (operation == "call-system")
+    {
+      LOG(INFO) << "Lua script to call system command on " << parameters["Instance"].asString();
+
+      const Json::Value& argsIn = parameters["Arguments"];
+      if (argsIn.type() != Json::arrayValue)
+      {
+        throw OrthancException(ErrorCode_BadParameterType);
+      }
+
+      std::vector<std::string> args;
+      args.reserve(argsIn.size());
+      for (Json::Value::ArrayIndex i = 0; i < argsIn.size(); ++i)
+      {
+        // http://jsoncpp.sourceforge.net/namespace_json.html#7d654b75c16a57007925868e38212b4e
+        switch (argsIn[i].type())
+        {
+          case Json::stringValue:
+            args.push_back(argsIn[i].asString());
+            break;
+
+          case Json::intValue:
+            args.push_back(boost::lexical_cast<std::string>(argsIn[i].asInt()));
+            break;
+
+          case Json::uintValue:
+            args.push_back(boost::lexical_cast<std::string>(argsIn[i].asUInt()));
+            break;
+
+          case Json::realValue:
+            args.push_back(boost::lexical_cast<std::string>(argsIn[i].asFloat()));
+            break;
+
+          default:
+            throw OrthancException(ErrorCode_BadParameterType);
+        }
+      }
+
+      return new CallSystemCommand(context_, parameters["Command"].asString(), args);
+    }
+
+    throw OrthancException(ErrorCode_ParameterOutOfRange);
+  }
+
+
+  LuaScripting::LuaScripting(ServerContext& context) : context_(context)
+  {
+    lua_.Execute(Orthanc::EmbeddedResources::LUA_TOOLBOX);
+    lua_.SetHttpProxy(Configuration::GetGlobalStringParameter("HttpProxy", ""));
+  }
+
+
+  void LuaScripting::ApplyOnStoredInstance(const std::string& instanceId,
+                                           const Json::Value& simplifiedTags,
+                                           const Json::Value& metadata,
+                                           const std::string& remoteAet,
+                                           const std::string& calledAet)
+  {
+    if (lua_.IsExistingFunction(ON_STORED_INSTANCE))
+    {
+      lua_.Execute("_InitializeJob()");
+
+      LuaFunctionCall call(lua_, ON_STORED_INSTANCE);
+      call.PushString(instanceId);
+      call.PushJson(simplifiedTags);
+      call.PushJson(metadata);
+      call.PushJson(remoteAet);
+      call.PushJson(calledAet);
+      call.Execute();
+
+      Json::Value operations;
+      LuaFunctionCall call2(lua_, "_AccessJob");
+      call2.ExecuteToJson(operations);
+     
+      if (operations.type() != Json::arrayValue)
+      {
+        throw OrthancException(ErrorCode_InternalError);
+      }
+
+      ServerJob job;
+      ServerCommandInstance* previousCommand = NULL;
+
+      for (Json::Value::ArrayIndex i = 0; i < operations.size(); ++i)
+      {
+        if (operations[i].type() != Json::objectValue ||
+            !operations[i].isMember("Operation"))
+        {
+          throw OrthancException(ErrorCode_InternalError);
+        }
+
+        const Json::Value& parameters = operations[i];
+        std::string operation = parameters["Operation"].asString();
+
+        ServerCommandInstance& command = job.AddCommand(ParseOperation(operation, operations[i]));
+        
+        if (!parameters.isMember("Instance"))
+        {
+          throw OrthancException(ErrorCode_InternalError);
+        }
+
+        std::string instance = parameters["Instance"].asString();
+        if (instance.empty())
+        {
+          previousCommand->ConnectOutput(command);
+        }
+        else 
+        {
+          command.AddInput(instance);
+        }
+
+        previousCommand = &command;
+      }
+
+      job.SetDescription(std::string("Lua script: ") + ON_STORED_INSTANCE);
+      context_.GetScheduler().Submit(job);
+    }
+  }
+
+
+  void LuaScripting::SignalStoredInstance(const std::string& publicId,
+                                          DicomInstanceToStore& instance,
+                                          const Json::Value& simplifiedTags)
+  {
+    boost::mutex::scoped_lock lock(mutex_);
+
+    Json::Value metadata = Json::objectValue;
+
+    for (ServerIndex::MetadataMap::const_iterator 
+           it = instance.GetMetadata().begin(); 
+         it != instance.GetMetadata().end(); ++it)
+    {
+      if (it->first.first == ResourceType_Instance)
+      {
+        metadata[EnumerationToString(it->first.second)] = it->second;
+      }
+    }
+
+    ApplyOnStoredInstance(publicId, simplifiedTags, metadata, 
+                          instance.GetRemoteAet(), instance.GetCalledAet());
+  }
+
+
+  void LuaScripting::SignalChange(const ServerIndexChange& change)
+  {
+    boost::mutex::scoped_lock lock(mutex_);
+
+    // TODO
+  }
+
+
+  bool LuaScripting::FilterIncomingInstance(const Json::Value& simplified,
+                                            const std::string& remoteAet)
+  {
+    boost::mutex::scoped_lock lock(mutex_);
+
+    if (lua_.IsExistingFunction(RECEIVED_INSTANCE_FILTER))
+    {
+      LuaFunctionCall call(lua_, RECEIVED_INSTANCE_FILTER);
+      call.PushJson(simplified);
+      call.PushString(remoteAet);
+
+      if (!call.ExecutePredicate())
+      {
+        return false;
+      }
+    }
+
+    return true;
+  }
+}