2008-02-01 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	Added DHT functionality, compatible with mainline.
	DHT is disabled by default. To enable it, give --enable-dht to 
aria2c.
	You may need to specify entry point to DHT network using
	--dht-entry-point. DHT uses UDP port to listen incoming message.
	Use --dht-listen-port to specify port number. Make sure that 
your
	firewall configuration can pass through UDP traffic to the port.
	The routing table is saved in $HOME/.aria2/dht.dat.
	* src/DHT*
	* src/BNode.{h, cc}
	* src/PeerInteractionCommand.cc: enable DHT functionality for a
	particular torrent.
	* src/Data.cc: Rewritten ctor.
	* src/OptionHandlerFactory.cc: Added --enable-dht, 
--dht-listen-port,
	--dht-entry-point.
	* src/DefaultBtInteractive.cc: Send port message if dht is 
enabled.
	* src/RequestGroup.cc: Initialize DHT functionality. When 
download
	ends, remove BtContext from DHTPeerAnnounceStorage.
	* src/BtPortMessage.{h, cc}: Rewritten.
	* src/message.h
	* src/OptionHandlerImpl.cc
	* src/option_processing.cc: Added --enable-dht, 
--dht-listen-port,
	--dht-entry-point.
	* src/Dictionary.{h, cc} (remove): New function.
	* src/prefs.h
	* src/DefaultBtMessageFactory.h
	* src/BtHandshakeMessage.cc
	* src/ActivePeerConnectionCommand.cc
	* src/SocketCore.{h, cc}: Added datagram socket support.
	* src/DefaultBtMessageFactory.cc
	* src/BtSetup.cc: Add BtContext to DHTPeerAnnounceStorage here.
	Create DHT commands.
	* src/BtMessageFactory.h
	* src/PeerMessageUtil.{h, cc}

1 files changed, 143 insertions, 0 deletions

diff --git a/src/DHTTaskFactoryImpl.cc b/src/DHTTaskFactoryImpl.cc
new file mode 100644
index 00000000..9fd31342
--- /dev/null
+++ b/src/DHTTaskFactoryImpl.cc
@@ -0,0 +1,143 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2006 Tatsuhiro Tsujikawa
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * 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.
+ */
+/* copyright --> */
+#include "DHTTaskFactoryImpl.h"
+#include "DHTNode.h"
+#include "DHTRoutingTable.h"
+#include "DHTMessageDispatcher.h"
+#include "DHTMessageFactory.h"
+#include "DHTTaskQueue.h"
+#include "LogFactory.h"
+#include "DHTPingTask.h"
+#include "DHTNodeLookupTask.h"
+#include "DHTBucketRefreshTask.h"
+#include "DHTPeerLookupTask.h"
+#include "DHTReplaceNodeTask.h"
+#include "Peer.h"
+#include "DHTNodeLookupEntry.h"
+#include "BtContext.h"
+#include "PeerStorage.h"
+#include "BtRuntime.h"
+
+DHTTaskFactoryImpl::DHTTaskFactoryImpl():_localNode(0),
+					 _routingTable(0),
+					 _dispatcher(0),
+					 _factory(0),
+					 _taskQueue(0),
+					 _logger(LogFactory::getInstance()) {}
+
+DHTTaskFactoryImpl::~DHTTaskFactoryImpl() {}
+
+DHTTaskHandle
+DHTTaskFactoryImpl::createPingTask(const DHTNodeHandle& remoteNode,
+				   size_t numRetry)
+{
+  SharedHandle<DHTPingTask> task = new DHTPingTask(remoteNode, numRetry);
+  setCommonProperty(task);
+  return task;
+}
+
+DHTTaskHandle
+DHTTaskFactoryImpl::createNodeLookupTask(const unsigned char* targetID)
+{
+  SharedHandle<DHTNodeLookupTask> task = new DHTNodeLookupTask(targetID);
+  setCommonProperty(task);
+  return task;
+}
+
+DHTTaskHandle
+DHTTaskFactoryImpl::createBucketRefreshTask()
+{
+  SharedHandle<DHTBucketRefreshTask> task = new DHTBucketRefreshTask();
+  setCommonProperty(task);
+  return task;
+}
+
+DHTTaskHandle
+DHTTaskFactoryImpl::createPeerLookupTask(const BtContextHandle& ctx)
+{
+  SharedHandle<DHTPeerLookupTask> task = new DHTPeerLookupTask(ctx);
+  setCommonProperty(task);
+  return task;
+}
+
+DHTTaskHandle
+DHTTaskFactoryImpl::createPeerAnnounceTask(const unsigned char* infoHash)
+{
+  // TODO
+  return 0;
+}
+
+DHTTaskHandle
+DHTTaskFactoryImpl::createReplaceNodeTask(const DHTBucketHandle& bucket,
+					  const DHTNodeHandle& newNode)
+{
+  SharedHandle<DHTReplaceNodeTask> task = new DHTReplaceNodeTask(bucket, newNode);
+  setCommonProperty(task);
+  return task;
+}
+
+void DHTTaskFactoryImpl::setCommonProperty(const DHTAbstractTaskHandle& task)
+{
+  task->setRoutingTable(_routingTable);
+  task->setMessageDispatcher(_dispatcher);
+  task->setMessageFactory(_factory);
+  task->setTaskQueue(_taskQueue);
+  task->setLocalNode(_localNode);
+}
+
+void DHTTaskFactoryImpl::setRoutingTable(const WeakHandle<DHTRoutingTable> routingTable)
+{
+  _routingTable = routingTable;
+}
+
+void DHTTaskFactoryImpl::setMessageDispatcher(const WeakHandle<DHTMessageDispatcher> dispatcher)
+{
+  _dispatcher = dispatcher;
+}
+
+void DHTTaskFactoryImpl::setMessageFactory(const WeakHandle<DHTMessageFactory> factory)
+{
+  _factory = factory;
+}
+
+void DHTTaskFactoryImpl::setTaskQueue(const WeakHandle<DHTTaskQueue> taskQueue)
+{
+  _taskQueue = taskQueue;
+}
+
+void DHTTaskFactoryImpl::setLocalNode(const DHTNodeHandle& localNode)
+{
+  _localNode = localNode;
+}