X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=include%2Fconnection.h;h=ed88d83f7aa1d676fefb7566169dc481ca9e1909;hb=8edd8f730d8e7781b1d3df25c61b1e123fad7a4f;hp=763b17fb573f9bff34e93e2b3bf7df4910731a7d;hpb=014ac7aa42b1ad1c62fa15366bc8fc2b3ef97488;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/include/connection.h b/include/connection.h index 763b17fb5..ed88d83f7 100644 --- a/include/connection.h +++ b/include/connection.h @@ -1,68 +1,292 @@ -/* - -*/ +/* +------------------------------------+ + * | Inspire Internet Relay Chat Daemon | + * +------------------------------------+ + * + * Inspire is copyright (C) 2002-2004 ChatSpike-Dev. + * E-mail: + * + * + * + * Written by Craig Edwards, Craig McLure, and others. + * This program is free but copyrighted software; see + * the file COPYING for details. + * + * --------------------------------------------------- + */ #include "inspircd_config.h" #include "base.h" #include -#include -#include +#include #include +#include #include #include #include #include #include +#include +#include #ifndef __CONNECTION_H__ #define __CONNECTION_H__ -#define PT_SYN_ONLY 0 -#define PT_ACK_ONLY 1 -#define PT_SYN_WITH_DATA 2 - +#define STATE_DISCONNECTED 0 +#define STATE_CONNECTED 1 +#define STATE_SYNC 2 +#define STATE_NOAUTH_INBOUND 3 +#define STATE_NOAUTH_OUTBOUND 4 +#define STATE_SERVICES 5 -class packet : public classbase +/** Each connection has one or more of these + * each represents ONE outbound connection to another ircd + * so each inbound has multiple outbounds. A listening socket + * that accepts server type connections is represented by one + * class serverrec. Class serverrec will instantiate several + * objects of type ircd_connector to represent each established + * connection, inbound or outbound. So, to determine all linked + * servers you must walk through all the serverrecs that the + * core defines, and in each one iterate through until you find + * connection(s) relating to the server you want information on. + * The core and module API provide functions for this. + */ +class ircd_connector : public Extensible { + private: + /** Sockaddr of the outbound ip and port + */ + sockaddr_in addr; + + /** File descriptor of the connection + */ + int fd; + + /** Server name + */ + std::string servername; + + /** Server 'GECOS' + */ + std::string description; + + /** State. STATE_NOAUTH_INBOUND, STATE_NOAUTH_OUTBOUND + * STATE_SYNC, STATE_DISCONNECTED, STATE_CONNECTED + */ + int state; + + /** PRIVATE function to set the host address and port to connect to + */ + bool SetHostAddress(char* host, int port); + public: - long key; - short int id; - short int type; - char data[MAXBUF]; + + /** When MakeOutboundConnection is called, these public members are + * filled with the details passed to the function, for future + * reference + */ + char host[MAXBUF]; + + /** When MakeOutboundConnection is called, these public members are + * filled with the details passed to the function, for future + * reference + */ + int port; + + /** Server names of servers that this server is linked to + * So for A->B->C, if this was the record for B it would contain A and C + * whilever both servers are connected to B. + */ + std::vector routes; + - packet(); - ~packet(); + /** Create an outbound connection to a listening socket + */ + bool MakeOutboundConnection(char* host, int port); + + /** Return the servername on this established connection + */ + std::string GetServerName(); + + /** Set the server name of this connection + */ + void SetServerName(std::string serv); + + /** Get the file descriptor associated with this connection + */ + int GetDescriptor(); + + /** Set the file descriptor for this connection + */ + void SetDescriptor(int fd); + + /** Get the state flags for this connection + */ + int GetState(); + + /** Set the state flags for this connection + */ + void SetState(int state); + + /** Get the ip address (not servername) associated with this connection + */ + char* GetServerIP(); + + /** Get the server description of this connection + */ + std::string GetDescription(); + + /** Set the server description of this connection + */ + void SetDescription(std::string desc); + + /** Get the port number being used for this connection + * If the connection is outbound this will be the remote port + * otherwise it will be the local port, so it can always be + * gautanteed as open at the address given in GetServerIP(). + */ + int GetServerPort(); + + /** Set the port used by this connection + */ + void SetServerPort(int p); + + /** Set both the host and the port in one operation for this connection + */ + bool SetHostAndPort(char* host, int port); + + /** Close the connection by calling close() on its file descriptor + * This function call updates no other data. + */ + void CloseConnection(); }; -class connection : public classbase +/** Please note: classes serverrec and userrec both inherit from class connection. + */ +class connection : public Extensible { public: - long key; - int fd; // file descriptor - char host[256]; // hostname - long ip; // ipv4 address - char inbuf[MAXBUF]; // recvQ + /** File descriptor of the connection + */ + int fd; + + /** Hostname of connection. Not used if this is a serverrec + */ + char host[256]; + + /** IP of connection. Reserved for future use. + */ + char ip[32]; + + /** Inbuf of connection. Only used for userrec + */ + char inbuf[MAXBUF]; + + /** Stats counter for bytes inbound + */ long bytes_in; + + /** Stats counter for bytes outbound + */ long bytes_out; + + /** Stats counter for commands inbound + */ long cmds_in; + + /** Stats counter for commands outbound + */ long cmds_out; + + /** True if server/user has authenticated, false if otherwise + */ bool haspassed; + + /** Port number + * For a userrec, this is the port they connected to the network on. + * For a serverrec this is the current listening port of the serverrec object. + */ int port; + + /** Used by userrec to indicate the registration status of the connection + */ int registered; + + /** Reserved for future use + */ + short int state; + + /** Time the connection was last pinged + */ time_t lastping; + + /** Time the connection was created, set in the constructor + */ time_t signon; + + /** Time that the connection last sent data, used to calculate idle time + */ time_t idle_lastmsg; + + /** Used by PING checks with clients + */ time_t nping; + /** Unused, will be removed in a future alpha/beta + */ + char internal_addr[MAXBUF]; + + /** Unused, will be removed in a future alpha/beta + */ + int internal_port; + + /** With a serverrec, this is a list of all established server connections. + * With a userrec this is unused. + */ + std::vector connectors; + + /** Default constructor + */ connection(); + + /** Create a listening socket on 'host' using port number 'p' + */ bool CreateListener(char* host, int p); - bool BeginLink(char* targethost, int port, char* password); + + /** Begin an outbound link to another ircd at targethost. + */ + bool BeginLink(char* targethost, int port, char* password, char* servername, int myport); + + /** Begin an outbound mesh link to another ircd on a network you are already an authenticated member of + */ + bool MeshCookie(char* targethost, int port, long cookie, char* servername); + + /** Terminate a link to 'targethost' by calling the ircd_connector::CloseConnection method. + */ void TerminateLink(char* targethost); - bool SendPacket(char *message, char* host, int port); - bool RecvPacket(char *message, char* host, int &prt); - bool SendSYN(char* host, int port); - bool SendACK(char* host, int port, int reply_id); + + /** Send a message to a server by name, if the server is unavailable directly route the packet via another server + * If the server still cannot be reached after attempting to route the message remotely, returns false. + */ + bool SendPacket(char *message, const char* host); + + /** Returns the next available packet and returns true if data is available. Writes the servername the data came from to 'host'. + * If no data is available this function returns false. + * This function will automatically close broken links and reroute pathways, generating split messages on the network. + */ + bool RecvPacket(std::deque &messages, char* host); + + /** Find the ircd_connector oject related to a certain servername given in 'host' + */ + ircd_connector* FindHost(std::string host); + + /** Add an incoming connection to the connection pool. + * (reserved for core use) + */ + bool AddIncoming(int fd,char* targethost, int sourceport); + + /** This function is deprecated and may be removed in a later alpha/beta + */ long GenKey(); };