/* * libretroshare/src/pqi: p3linkmgr.h * * 3P/PQI network interface for RetroShare. * * Copyright 2007-2011 by Robert Fernie. * * 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 "retroshare@lunamutt.com". * */ #ifndef MRK_PQI_LINK_MANAGER_HEADER #define MRK_PQI_LINK_MANAGER_HEADER #include "pqi/pqimonitor.h" #include "pqi/pqiipset.h" #include "pqi/pqiassist.h" #include "pqi/p3cfgmgr.h" #include "util/rsthreads.h" class ExtAddrFinder ; class DNSResolver ; /* order of attempts ... */ const uint32_t RS_NET_CONN_TCP_ALL = 0x000f; const uint32_t RS_NET_CONN_UDP_ALL = 0x00f0; const uint32_t RS_NET_CONN_TCP_LOCAL = 0x0001; const uint32_t RS_NET_CONN_TCP_EXTERNAL = 0x0002; const uint32_t RS_NET_CONN_TCP_UNKNOW_TOPOLOGY = 0x0004; const uint32_t RS_NET_CONN_TCP_HIDDEN = 0x0008; const uint32_t RS_NET_CONN_UDP_DHT_SYNC = 0x0010; const uint32_t RS_NET_CONN_UDP_PEER_SYNC = 0x0020; /* coming soon */ // These are set in pqipersongroup. const uint32_t RS_TCP_STD_TIMEOUT_PERIOD = 5; /* 5 seconds! */ const uint32_t RS_TCP_HIDDEN_TIMEOUT_PERIOD = 30; /* 30 seconds! */ const uint32_t RS_UDP_STD_TIMEOUT_PERIOD = 80; /* 80 secs, allows UDP TTL to get to 40! - Plenty of time (30+80) = 110 secs */ class peerAddrInfo { public: peerAddrInfo(); /* init */ bool found; uint32_t type; pqiIpAddrSet addrs; time_t ts; }; class peerConnectAddress { public: peerConnectAddress(); /* init */ struct sockaddr_storage addr; uint32_t delay; /* to stop simultaneous connects */ uint32_t period; /* UDP only */ uint32_t type; uint32_t flags; /* CB FLAGS defined in pqimonitor.h */ time_t ts; // Extra Parameters for Relay connections. struct sockaddr_storage proxyaddr; struct sockaddr_storage srcaddr; uint32_t bandwidth; // Extra Parameters for Proxy/Hidden connection. std::string domain_addr; uint16_t domain_port; }; class peerConnectState { public: peerConnectState(); /* init */ std::string id; /***** Below here not stored permanently *****/ bool dhtVisible; uint32_t connecttype; // RS_NET_CONN_TCP_ALL / RS_NET_CONN_UDP_ALL time_t lastavailable; time_t lastattempt; std::string name; uint32_t state; uint32_t actions; uint32_t linkType; uint32_t source; /* most current source */ peerAddrInfo dht; peerAddrInfo disc; peerAddrInfo peer; struct sockaddr_storage connectaddr; // current connection address. Can be local or external. /* a list of connect attempts to make (in order) */ bool inConnAttempt; peerConnectAddress currentConnAddrAttempt; std::list connAddrs; /* information about denial */ bool wasDeniedConnection; time_t deniedTS; bool deniedInConnAttempt; /* is below valid */ peerConnectAddress deniedConnectionAttempt; }; class p3tunnel; class RsPeerGroupItem; class RsGroupInfo; class p3PeerMgr; class p3NetMgr; class p3PeerMgrIMPL; class p3NetMgrIMPL; std::string textPeerConnectState(peerConnectState &state); /******* * Virtual Interface to allow testing * */ class p3LinkMgr: public pqiConnectCb { public: p3LinkMgr() { return; } virtual ~p3LinkMgr() { return; } virtual const std::string getOwnId() = 0; virtual bool isOnline(const std::string &ssl_id) = 0; virtual void getOnlineList(std::list &ssl_peers) = 0; virtual bool getPeerName(const std::string &ssl_id, std::string &name) = 0; virtual uint32_t getLinkType(const std::string &ssl_id) = 0; /**************** handle monitors *****************/ virtual void addMonitor(pqiMonitor *mon) = 0; virtual void removeMonitor(pqiMonitor *mon) = 0; /****************** Connections *******************/ virtual bool connectAttempt(const std::string &id, struct sockaddr_storage &raddr, struct sockaddr_storage &proxyaddr, struct sockaddr_storage &srcaddr, uint32_t &delay, uint32_t &period, uint32_t &type, uint32_t &flags, uint32_t &bandwidth, std::string &domain_addr, uint16_t &domain_port) = 0; virtual bool connectResult(const std::string &id, bool success, uint32_t flags, const struct sockaddr_storage &remote_peer_address) = 0; virtual bool retryConnect(const std::string &id) = 0; virtual void notifyDeniedConnection(const std::string& gpgid,const std::string& sslid,const std::string& sslcn,const struct sockaddr_storage &addr, bool incoming) = 0; /* Network Addresses */ virtual bool setLocalAddress(const struct sockaddr_storage &addr) = 0; virtual bool getLocalAddress(struct sockaddr_storage &addr) = 0; /************* DEPRECIATED FUNCTIONS (TO REMOVE) ********/ virtual void getFriendList(std::list &ssl_peers) = 0; // ONLY used by p3peers.cc USE p3PeerMgr instead. virtual bool getFriendNetStatus(const std::string &id, peerConnectState &state) = 0; // ONLY used by p3peers.cc /************* DEPRECIATED FUNCTIONS (TO REMOVE) ********/ virtual int addFriend(const std::string &ssl_id, bool isVisible) = 0; /******* overloaded from pqiConnectCb *************/ // THESE MUSTn't BE specfied HERE - as overloaded from pqiConnectCb. //virtual void peerStatus(std::string id, const pqiIpAddrSet &addrs, // uint32_t type, uint32_t flags, uint32_t source) = 0; //virtual void peerConnectRequest(std::string id, const struct sockaddr_storage &raddr, // const struct sockaddr_storage &proxyaddr, const struct sockaddr_storage &srcaddr, // uint32_t source, uint32_t flags, uint32_t delay, uint32_t bandwidth) = 0; /****************************************************************************/ /****************************************************************************/ /****************************************************************************/ }; class p3LinkMgrIMPL: public p3LinkMgr { public: /************************************************************************************************/ /* EXTERNAL INTERFACE */ /************************************************************************************************/ virtual const std::string getOwnId(); virtual bool isOnline(const std::string &ssl_id); virtual void getOnlineList(std::list &ssl_peers); virtual bool getPeerName(const std::string &ssl_id, std::string &name); virtual uint32_t getLinkType(const std::string &ssl_id); /**************** handle monitors *****************/ virtual void addMonitor(pqiMonitor *mon); virtual void removeMonitor(pqiMonitor *mon); /****************** Connections *******************/ virtual bool connectAttempt(const std::string &id, struct sockaddr_storage &raddr, struct sockaddr_storage &proxyaddr, struct sockaddr_storage &srcaddr, uint32_t &delay, uint32_t &period, uint32_t &type, uint32_t &flags, uint32_t &bandwidth, std::string &domain_addr, uint16_t &domain_port); virtual bool connectResult(const std::string &id, bool success, uint32_t flags, const struct sockaddr_storage &remote_peer_address); virtual bool retryConnect(const std::string &id); virtual void notifyDeniedConnection(const std::string& gpgid,const std::string& sslid,const std::string& sslcn,const struct sockaddr_storage &addr, bool incoming); /* Network Addresses */ virtual bool setLocalAddress(const struct sockaddr_storage &addr); virtual bool getLocalAddress(struct sockaddr_storage &addr); /******* overloaded from pqiConnectCb *************/ virtual void peerStatus(std::string id, const pqiIpAddrSet &addrs, uint32_t type, uint32_t flags, uint32_t source); virtual void peerConnectRequest(std::string id, const struct sockaddr_storage &raddr, const struct sockaddr_storage &proxyaddr, const struct sockaddr_storage &srcaddr, uint32_t source, uint32_t flags, uint32_t delay, uint32_t bandwidth); /************* DEPRECIATED FUNCTIONS (TO REMOVE) ********/ virtual void getFriendList(std::list &ssl_peers); // ONLY used by p3peers.cc USE p3PeerMgr instead. virtual bool getFriendNetStatus(const std::string &id, peerConnectState &state); // ONLY used by p3peers.cc /************************************************************************************************/ /* Extra IMPL Functions (used by p3PeerMgr, p3NetMgr + Setup) */ /************************************************************************************************/ p3LinkMgrIMPL(p3PeerMgrIMPL *peerMgr, p3NetMgrIMPL *netMgr); void tick(); /* THIS COULD BE ADDED TO INTERFACE */ void setFriendVisibility(const std::string &id, bool isVisible); /* add/remove friends */ virtual int addFriend(const std::string &ssl_id, bool isVisible); int removeFriend(const std::string &ssl_id); void printPeerLists(std::ostream &out); protected: /* THESE CAN PROBABLY BE REMOVED */ //bool shutdown(); /* blocking shutdown call */ //bool getOwnNetStatus(peerConnectState &state); protected: /****************** Internal Interface *******************/ /* Internal Functions */ void statusTick(); /* monitor control */ void tickMonitors(); /* connect attempts UDP */ bool tryConnectUDP(const std::string &id, const struct sockaddr_storage &rUdpAddr, const struct sockaddr_storage &proxyaddr, const struct sockaddr_storage &srcaddr, uint32_t flags, uint32_t delay, uint32_t bandwidth); /* connect attempts TCP */ bool retryConnectTCP(const std::string &id); void locked_ConnectAttempt_SpecificAddress(peerConnectState *peer, const struct sockaddr_storage &remoteAddr); void locked_ConnectAttempt_CurrentAddresses(peerConnectState *peer, const struct sockaddr_storage &localAddr, const struct sockaddr_storage &serverAddr); void locked_ConnectAttempt_HistoricalAddresses(peerConnectState *peer, const pqiIpAddrSet &ipAddrs); void locked_ConnectAttempt_AddDynDNS(peerConnectState *peer, std::string dyndns, uint16_t dynPort); void locked_ConnectAttempt_AddTunnel(peerConnectState *peer); void locked_ConnectAttempt_ProxyAddress(peerConnectState *peer, const struct sockaddr_storage &proxy_addr, const std::string &domain_addr, uint16_t domain_port); bool locked_ConnectAttempt_Complete(peerConnectState *peer); bool locked_CheckPotentialAddr(const struct sockaddr_storage &addr, time_t age); bool addAddressIfUnique(std::list &addrList, peerConnectAddress &pca, bool pushFront); private: // These should have there own Mutex Protection, //p3tunnel *mP3tunnel; DNSResolver *mDNSResolver ; p3PeerMgrIMPL *mPeerMgr; p3NetMgrIMPL *mNetMgr; RsMutex mLinkMtx; /* protects below */ uint32_t mRetryPeriod; bool mStatusChanged; struct sockaddr_storage mLocalAddress; std::list clients; bool mAllowTunnelConnection; /* external Address determination */ //bool mUpnpAddrValid, mStunAddrValid; //struct sockaddr_in mUpnpExtAddr; //peerConnectState mOwnState; std::map mFriendList; std::map mOthersList; std::list groupList; uint32_t lastGroupId; /* relatively static list of banned ip addresses */ std::list mBannedIpList; }; #endif // MRK_PQI_LINK_MANAGER_HEADER