2010-02-20 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

	Added Local Peer Discovery. It is disabled by default. Use
	--bt-enable-lpd to enable the function.
	* src/BtConstants.h
	* src/BtSetup.cc
	* src/LpdDispatchMessageCommand.cc
	* src/LpdDispatchMessageCommand.h
	* src/LpdMessage.h
	* src/LpdMessageDispatcher.cc
	* src/LpdMessageDispatcher.h
	* src/LpdMessageReceiver.cc
	* src/LpdMessageReceiver.h
	* src/LpdReceiveMessageCommand.cc
	* src/LpdReceiveMessageCommand.h
	* src/Makefile.am
	* src/OptionHandlerFactory.cc
	* src/Peer.cc
	* src/Peer.h
	* src/PeerInteractionCommand.cc
	* src/SocketCore.cc
	* src/SocketCore.h
	* src/prefs.cc
	* src/prefs.h
	* src/usage_text.h
	* src/util.cc
	* src/util.h
	* test/LpdMessageDispatcherTest.cc
	* test/LpdMessageReceiverTest.cc
	* test/Makefile.am

1 files changed, 154 insertions, 0 deletions

diff --git a/src/LpdReceiveMessageCommand.cc b/src/LpdReceiveMessageCommand.cc
new file mode 100644
index 00000000..ba169b8f
--- /dev/null
+++ b/src/LpdReceiveMessageCommand.cc
@@ -0,0 +1,154 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2010 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 "LpdReceiveMessageCommand.h"
+#include "DownloadEngine.h"
+#include "SocketCore.h"
+#include "LpdMessageReceiver.h"
+#include "RequestGroupMan.h"
+#include "DownloadContext.h"
+#include "PeerStorage.h"
+#include "Peer.h"
+#include "RequestGroup.h"
+#include "BtRegistry.h"
+#include "Logger.h"
+#include "PieceStorage.h"
+#include "BtRuntime.h"
+#include "BtProgressInfoFile.h"
+#include "BtAnnounce.h"
+#include "LpdMessage.h"
+#include "bittorrent_helper.h"
+
+namespace aria2 {
+
+unsigned int LpdReceiveMessageCommand::__numInstance = 0;
+
+LpdReceiveMessageCommand* LpdReceiveMessageCommand::__instance = 0;
+
+LpdReceiveMessageCommand::LpdReceiveMessageCommand
+(int32_t cuid, const SharedHandle<LpdMessageReceiver>& receiver,
+ DownloadEngine* e):Command(cuid), _receiver(receiver), _e(e)
+{
+  _e->addSocketForReadCheck(_receiver->getSocket(), this);
+  ++__numInstance;
+}
+
+LpdReceiveMessageCommand::~LpdReceiveMessageCommand()
+{
+  _e->deleteSocketForReadCheck(_receiver->getSocket(), this);
+  --__numInstance;
+  if(__numInstance == 0) {
+    __instance = 0;
+  }
+}
+
+bool LpdReceiveMessageCommand::execute()
+{
+  if(_e->_requestGroupMan->downloadFinished() || _e->isHaltRequested()) {
+    return true;
+  }
+  for(size_t i = 0; i < 20; ++i) {
+    SharedHandle<LpdMessage> m = _receiver->receiveMessage();
+    if(m.isNull()) {
+      break;
+    }
+    SharedHandle<BtRegistry> reg = _e->getBtRegistry();
+    SharedHandle<DownloadContext> dctx =
+      reg->getDownloadContext(m->getInfoHash());
+    if(dctx.isNull()) {
+      if(logger->debug()) {
+        logger->debug("Download Context is null for infohash=%s.",
+                      util::toHex(m->getInfoHash()).c_str());
+      }
+      continue;
+    }
+    const BDE& torrentAttrs = dctx->getAttribute(bittorrent::BITTORRENT);
+    if(torrentAttrs.containsKey(bittorrent::PRIVATE)) {
+      if(torrentAttrs[bittorrent::PRIVATE].i() == 1) {
+        if(logger->debug()) {
+          logger->debug("Ignore LPD message because the torrent is private.");
+        }
+        continue;
+      }
+    }
+    RequestGroup* group = dctx->getOwnerRequestGroup();
+    assert(group);
+    BtObject btobj = reg->get(group->getGID());
+    assert(!btobj.isNull());
+    SharedHandle<PeerStorage> peerStorage = btobj._peerStorage;
+    assert(!peerStorage.isNull());
+    SharedHandle<Peer> peer = m->getPeer();
+    if(peerStorage->addPeer(peer)) {
+      if(logger->debug()) {
+        logger->debug("LPD peer %s:%u local=%d added.",
+                      peer->ipaddr.c_str(), peer->port,
+                      peer->isLocalPeer()?1:0);
+      }
+    } else {
+      if(logger->debug()) {
+        logger->debug("LPD peer %s:%u local=%d not added.",
+                      peer->ipaddr.c_str(), peer->port,
+                      peer->isLocalPeer()?1:0);
+      }
+    }
+  }
+  _e->commands.push_back(this);
+  return false;
+}
+
+SharedHandle<SocketCore> LpdReceiveMessageCommand::getReceiverSocket() const
+{
+  return _receiver->getSocket();
+}
+
+LpdReceiveMessageCommand*
+LpdReceiveMessageCommand::getInstance
+(DownloadEngine* e, const SharedHandle<LpdMessageReceiver>& receiver)
+{
+  if(__numInstance == 0) {
+    __instance = new LpdReceiveMessageCommand(e->newCUID(), receiver, e);
+  }
+  return __instance;
+}
+
+LpdReceiveMessageCommand* LpdReceiveMessageCommand::getInstance()
+{
+  if(__numInstance == 0) {
+    return 0;
+  } else {
+    return __instance;
+  }
+}
+
+} // namespace aria2