moved all distant chat code into a separate file. Will do the same for chat lobbies

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7666 b45a01b8-16f6-495d-af2f-9b41ad6348cc
2025-05-05 15:45:04 -04:00 · 2014-11-08 14:55:29 +00:00 · 2014-11-08 14:55:29 +00:00 · b98c6cbe02
commit b98c6cbe02
parent 9a6d57f89b
5 changed files with 1026 additions and 900 deletions
--- a/libretroshare/src/chat/distantchat.h
+++ b/libretroshare/src/chat/distantchat.h
@ -0,0 +1,116 @@
+/*
+ * libretroshare/src/chat: distantchat.h
+ *
+ * Services for RetroShare.
+ *
+ * Copyright 2014 by Cyril Soler
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License Version 2 as published by the Free Software Foundation.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA.
+ *
+ * Please report all bugs and problems to "csoler@users.sourceforge.net".
+ *
+ */
+
+#pragma once
+
+#include <turtle/turtleclientservice.h>
+
+class p3IdService ;
+
+static const uint32_t DISTANT_CHAT_AES_KEY_SIZE = 16 ;
+
+class DistantChatService: public RsTurtleClientService
+{
+	public:
+		DistantChatService(p3IdService *pids)
+			: mIdService(pids), mDistantChatMtx("distant chat")
+		{
+			mTurtle = NULL ;
+		}
+
+		void flush() ;
+
+		virtual void connectToTurtleRouter(p3turtle *) ;
+
+		// Creates the invite if the public key of the distant peer is available.
+		// Om success, stores the invite in the map above, so that we can respond to tunnel requests.
+		//
+		bool initiateDistantChatConnexion(const RsGxsId& gxs_id,uint32_t& error_code) ;
+		bool closeDistantChatConnexion(const DistantChatPeerId& pid) ;
+		virtual bool getDistantChatStatus(const DistantChatPeerId& hash,RsGxsId& gxs_id,uint32_t& status) ;
+
+		// derived in p3ChatService
+		virtual void handleIncomingItem(RsItem *) = 0;
+
+		bool handleOutgoingItem(RsChatItem *) ;
+		bool handleRecvItem(RsChatItem *) ;
+		void handleRecvChatStatusItem(RsChatStatusItem *cs) ;
+
+	private:
+		class DistantChatPeerInfo 
+		{
+			public:
+				DistantChatPeerInfo() { dh = NULL; }
+
+			time_t last_contact ; 			// used to send keep alive packets
+
+			DH *dh ;
+			unsigned char aes_key[DISTANT_CHAT_AES_KEY_SIZE] ;
+
+
+			uint32_t status ;					// info: do we have a tunnel ?
+			RsPeerId virtual_peer_id;  	// given by the turtle router. Identifies the tunnel.
+			RsGxsId gxs_id ;          		// gxs id of the peer we're talking to.
+			RsGxsId own_gxs_id ;         	// gxs id we're using to talk.
+			RsTurtleGenericTunnelItem::Direction direction ; // specifiec wether we are client(managing the tunnel) or server.
+		};
+
+		// This maps contains the current peers to talk to with distant chat.
+		//
+		std::map<TurtleFileHash,DistantChatPeerInfo> _distant_chat_peers ;
+
+		// List of items to be sent asap. Used to store items that we cannot pass directly to 
+		// sendTurtleData(), because of Mutex protection.
+
+		std::list<RsChatItem*> pendingDistantChatItems ;
+
+		// Overloaded from RsTurtleClientService
+
+		virtual bool handleTunnelRequest(const RsFileHash &hash,const RsPeerId& peer_id) ;
+		virtual void receiveTurtleData(RsTurtleGenericTunnelItem *item,const RsFileHash& hash,const RsPeerId& virtual_peer_id,RsTurtleGenericTunnelItem::Direction direction) ;
+		void addVirtualPeer(const TurtleFileHash&, const TurtleVirtualPeerId&,RsTurtleGenericTunnelItem::Direction dir) ;
+		void removeVirtualPeer(const TurtleFileHash&, const TurtleVirtualPeerId&) ;
+		void markDistantChatAsClosed(const TurtleVirtualPeerId& vpid) ;
+		void startClientDistantChatConnection(const RsFileHash& hash,const RsGxsId& to_gxs_id,const RsGxsId& from_gxs_id) ;
+		bool getHashFromVirtualPeerId(const TurtleVirtualPeerId& pid,RsFileHash& hash) ;
+		TurtleFileHash hashFromGxsId(const RsGxsId& pid) ;
+
+		void handleRecvDHPublicKey(RsChatDHPublicKeyItem *item) ;
+		bool locked_sendDHPublicKey(const DistantChatPeerInfo& pinfo) ;
+		bool locked_initDHSessionKey(DistantChatPeerInfo& pinfo);
+		DistantChatPeerId virtualPeerIdFromHash(const TurtleFileHash& hash  ) ;	// ... and to a hash for p3turtle
+
+
+		// Utility functions
+
+		void sendTurtleData(RsChatItem *) ;
+
+		static TurtleFileHash hashFromVirtualPeerId(const DistantChatPeerId& peerId) ;	// converts IDs so that we can talk to RsPeerId from outside
+
+		p3turtle *mTurtle ;
+		p3IdService *mIdService ;
+
+		RsMutex mDistantChatMtx ;
+};