X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Ftreesocket.h;h=4887623c125f1e4aaff4f77a73f6305b152a06b0;hb=4bb972550e79292c5571714103780d873f5e82aa;hp=de9c78fef42bd48d9c62e066f1f411493321dd67;hpb=192fa7d3138ccb5929dc9af8de3395d6ea25619c;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_spanningtree/treesocket.h b/src/modules/m_spanningtree/treesocket.h index de9c78fef..4887623c1 100644 --- a/src/modules/m_spanningtree/treesocket.h +++ b/src/modules/m_spanningtree/treesocket.h @@ -1,28 +1,30 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2008 Robin Burchell + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2007 Craig Edwards * - * InspIRCd: (C) 2002-2009 InspIRCd Development Team - * See: http://wiki.inspircd.org/Credits + * This file is part of InspIRCd. InspIRCd 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, version 2. * - * This program is free but copyrighted software; see - * the file COPYING for details. + * 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, see . */ -#ifndef __TREESOCKET_H__ -#define __TREESOCKET_H__ -#include "commands/cmd_whois.h" -#include "commands/cmd_stats.h" -#include "socket.h" +#pragma once + #include "inspircd.h" -#include "xline.h" -#include "../transport.h" #include "utils.h" -#include "handshaketimer.h" /* * The server list in InspIRCd is maintained as two structures @@ -53,63 +55,126 @@ * WAIT_AUTH_2: indicates that the socket is inbound * but has not yet sent and received * SERVER strings. - * CONNECTED: represents a fully authorized, fully + * CONNECTED: represents a fully authorized, fully * connected server. + * DYING: represents a server that has had an error. */ -enum ServerState { CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED }; - -/** Every SERVER connection inbound or outbound is represented by - * an object of type TreeSocket. - * TreeSockets, being inherited from BufferedSocket, can be tied into - * the core socket engine, and we cn therefore receive activity events - * for them, just like activex objects on speed. (yes really, that - * is a technical term!) Each of these which relates to a locally - * connected server is assocated with it, by hooking it onto a - * TreeSocket class using its constructor. In this way, we can - * maintain a list of servers, some of which are directly connected, - * some of which are not. - */ -class TreeSocket : public BufferedSocket +enum ServerState { CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED, DYING }; + +struct CapabData { - SpanningTreeUtilities* Utils; /* Utility class */ - std::string myhost; /* Canonical hostname */ - std::string in_buffer; /* Input buffer */ - ServerState LinkState; /* Link state */ - std::string InboundServerName; /* Server name sent to us by other side */ - std::string InboundDescription; /* Server description (GECOS) sent to us by the other side */ - std::string InboundSID; /* Server ID sent to us by the other side */ - int num_lost_users; /* Users lost in split */ - int num_lost_servers; /* Servers lost in split */ - time_t NextPing; /* Time when we are due to ping this server */ - bool LastPingWasGood; /* Responded to last ping we sent? */ - std::string ModuleList; /* Module list of other server from CAPAB */ + reference link; /* Link block used for this connection */ + reference ac; /* Autoconnect used to cause this connection, if any */ + std::string ModuleList; /* Required module list of other server from CAPAB */ + std::string OptModuleList; /* Optional module list of other server from CAPAB */ + std::string ChanModes; + std::string UserModes; std::map CapKeys; /* CAPAB keys from other server */ - Module* Hook; /* I/O hooking module that we're attached to for this socket */ std::string ourchallenge; /* Challenge sent for challenge/response */ std::string theirchallenge; /* Challenge recv for challenge/response */ - std::string OutboundPass; /* Outbound password */ - bool sentcapab; /* Have sent CAPAB already */ - bool auth_fingerprint; /* Did we auth using SSL fingerprint */ + int capab_phase; /* Have sent CAPAB already */ + bool auth_fingerprint; /* Did we auth using SSL certificate fingerprint */ bool auth_challenge; /* Did we auth using challenge/response */ + + // Data saved from incoming SERVER command, for later use when our credentials have been accepted by the other party + std::string description; + std::string sid; + std::string name; + bool hidden; +}; + +/** Every SERVER connection inbound or outbound is represented by an object of + * type TreeSocket. During setup, the object can be found in Utils->timeoutlist; + * after setup, MyRoot will have been created as a child of Utils->TreeRoot + */ +class TreeSocket : public BufferedSocket +{ + struct BurstState; + + std::string linkID; /* Description for this link */ + ServerState LinkState; /* Link state */ + CapabData* capab; /* Link setup data (held until burst is sent) */ + TreeServer* MyRoot; /* The server we are talking to */ + int proto_version; /* Remote protocol version */ + + /** True if we've sent our burst. + * This only changes the behavior of message translation for 1202 protocol servers and it can be + * removed once 1202 support is dropped. + */ + bool burstsent; + + /** Checks if the given servername and sid are both free + */ + bool CheckDuplicate(const std::string& servername, const std::string& sid); + + /** Send all ListModeBase modes set on the channel + */ + void SendListModes(Channel* chan); + + /** Send all known information about a channel */ + void SyncChannel(Channel* chan, BurstState& bs); + + /** Send all users and their oper state, away state and metadata */ + void SendUsers(BurstState& bs); + + /** Send all additional info about the given server to this server */ + void SendServerInfo(TreeServer* from); + + /** Find the User source of a command given a prefix and a command string. + * This connection must be fully up when calling this function. + * @param prefix Prefix string to find the source User object for. Can be a sid, a uuid or a server name. + * @param command The command whose source to find. This is required because certain commands (like mode + * changes and kills) must be processed even if their claimed source doesn't exist. If the given command is + * such a command and the source does not exist, the function returns a valid FakeUser that can be used to + * to process the command with. + * @return The command source to use when processing the command or NULL if the source wasn't found. + * Note that the direction of the returned source is not verified. + */ + User* FindSource(const std::string& prefix, const std::string& command); + + /** Finish the authentication phase of this connection. + * Change the state of the connection to CONNECTED, create a TreeServer object for the server on the + * other end of the connection using the details provided in the parameters, and finally send a burst. + * @param remotename Name of the remote server + * @param remotesid SID of the remote server + * @param remotedesc Description of the remote server + * @param hidden True if the remote server is hidden according to the configuration + */ + void FinishAuth(const std::string& remotename, const std::string& remotesid, const std::string& remotedesc, bool hidden); + + /** Authenticate the remote server. + * Validate the parameters and find the link block that matches the remote server. In case of an error, + * an appropriate snotice is generated, an ERROR message is sent and the connection is closed. + * Failing to find a matching link block counts as an error. + * @param params Parameters they sent in the SERVER command + * @return Link block for the remote server, or NULL if an error occurred + */ + Link* AuthRemote(const parameterlist& params); + + /** Write a line on this socket with a new line character appended, skipping all translation for old protocols + * @param line Line to write without a new line character at the end + */ + void WriteLineNoCompat(const std::string& line); + public: - HandshakeTimer* hstimer; /* Handshake timer, needed to work around I/O hook buffering */ + const time_t age; /** Because most of the I/O gubbins are encapsulated within * BufferedSocket, we just call the superclass constructor for * most of the action, and append a few of our own values * to it. */ - TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, unsigned long maxtime, const std::string &ServerName, const std::string &bindto, Module* HookMod = NULL); + TreeSocket(Link* link, Autoconnect* myac, const std::string& ipaddr); /** When a listening socket gives us a new file descriptor, * we must associate it with a socket without creating a new * connection. This constructor is used for this purpose. */ - TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, int newfd, char* ip, Module* HookMod = NULL); + TreeSocket(int newfd, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server); /** Get link state */ - ServerState GetLinkState(); + ServerState GetLinkState() const { return LinkState; } /** Get challenge set in our CAPAB for challenge/response */ @@ -135,18 +200,11 @@ class TreeSocket : public BufferedSocket */ void CleanNegotiationInfo(); - /** Return the module which we are hooking to for I/O encapsulation - */ - Module* GetHook(); - + CullResult cull(); /** Destructor */ ~TreeSocket(); - /** Generate random string used for challenge-response auth - */ - std::string RandString(unsigned int length); - /** Construct a password, optionally hashed with the other side's * challenge string */ @@ -158,91 +216,49 @@ class TreeSocket : public BufferedSocket * to server docs on the inspircd.org site, the other side * will then send back its own server string. */ - virtual bool OnConnected(); + void OnConnected(); /** Handle socket error event */ - virtual void OnError(BufferedSocketError e); + void OnError(BufferedSocketError e) CXX11_OVERRIDE; /** Sends an error to the remote server, and displays it locally to show * that it was sent. */ void SendError(const std::string &errormessage); - /** Handle socket disconnect event - */ - virtual int OnDisconnect(); - /** Recursively send the server tree with distances as hops. * This is used during network burst to inform the other server * (and any of ITS servers too) of what servers we know about. - * If at any point any of these servers already exist on the other - * end, our connection may be terminated. The hopcounts given - * by this function are relative, this doesn't matter so long as - * they are all >1, as all the remote servers re-calculate them - * to be relative too, with themselves as hop 0. */ - void SendServers(TreeServer* Current, TreeServer* s, int hops); + void SendServers(TreeServer* Current, TreeServer* s); - /** Returns my capabilities as a string + /** Returns module list as a string, filtered by filter + * @param filter a module version bitmask, such as VF_COMMON or VF_OPTCOMMON */ - std::string MyCapabilities(); + std::string MyModules(int filter); /** Send my capabilities to the remote side */ - void SendCapabilities(); - - /* Check a comma seperated list for an item */ - bool HasItem(const std::string &list, const std::string &item); - - /* Isolate and return the elements that are different between two comma seperated lists */ - std::string ListDifference(const std::string &one, const std::string &two); - - bool Capab(const std::deque ¶ms); - - /** This function forces this server to quit, removing this server - * and any users on it (and servers and users below that, etc etc). - * It's very slow and pretty clunky, but luckily unless your network - * is having a REAL bad hair day, this function shouldnt be called - * too many times a month ;-) - */ - void SquitServer(std::string &from, TreeServer* Current); - - /** This is a wrapper function for SquitServer above, which - * does some validation first and passes on the SQUIT to all - * other remaining servers. - */ - void Squit(TreeServer* Current, const std::string &reason); - - /** FMODE command - server mode with timestamp checks */ - bool ForceMode(const std::string &source, std::deque ¶ms); + void SendCapabilities(int phase); - /** FTOPIC command */ - bool ForceTopic(const std::string &source, std::deque ¶ms); + /* Isolate and return the elements that are different between two lists */ + void ListDifference(const std::string &one, const std::string &two, char sep, + std::string& mleft, std::string& mright); - /** FJOIN, similar to TS6 SJOIN, but not quite. */ - bool ForceJoin(const std::string &source, std::deque ¶ms); - - /* Used on nick collision ... XXX ugly function HACK */ - int DoCollision(User *u, time_t remotets, const std::string &remoteident, const std::string &remoteip, const std::string &remoteuid); - - /** UID command */ - bool ParseUID(const std::string &source, std::deque ¶ms); + bool Capab(const parameterlist ¶ms); /** Send one or more FJOINs for a channel of users. * If the length of a single line is more than 480-NICKMAX * in length, it is split over multiple lines. */ - void SendFJoins(TreeServer* Current, Channel* c); + void SendFJoins(Channel* c); /** Send G, Q, Z and E lines */ - void SendXLines(TreeServer* Current); - - /** Send channel modes and topics */ - void SendChannelModes(TreeServer* Current); + void SendXLines(); - /** send all users and their oper state/modes */ - void SendUsers(TreeServer* Current); + /** Send all known information about a channel */ + void SyncChannel(Channel* chan); /** This function is called when we want to send a netburst to a local * server. There is a set order we must do this, because for example @@ -252,164 +268,43 @@ class TreeSocket : public BufferedSocket void DoBurst(TreeServer* s); /** This function is called when we receive data from a remote - * server. We buffer the data in a std::string (it doesnt stay - * there for long), reading using BufferedSocket::Read() which can - * read up to 16 kilobytes in one operation. - * - * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES - * THE SOCKET OBJECT FOR US. + * server. */ - virtual bool OnDataReady(); + void OnDataReady(); /** Send one or more complete lines down the socket */ - void WriteLine(std::string line); + void WriteLine(const std::string& line); /** Handle ERROR command */ - bool Error(std::deque ¶ms); - - /** remote MOTD. leet, huh? */ - bool Motd(const std::string &prefix, std::deque ¶ms); - - /** remote ADMIN. leet, huh? */ - bool Admin(const std::string &prefix, std::deque ¶ms); - - /** Remote MODULES */ - bool Modules(const std::string &prefix, std::deque ¶ms); - - bool Stats(const std::string &prefix, std::deque ¶ms); - - /** Because the core won't let users or even SERVERS set +o, - * we use the OPERTYPE command to do this. - */ - bool OperType(const std::string &prefix, std::deque ¶ms); - - /** Because Andy insists that services-compatible servers must - * implement SVSNICK and SVSJOIN, that's exactly what we do :p - */ - bool ForceNick(const std::string &prefix, std::deque ¶ms); - - /** PRIVMSG or NOTICE with server origin ONLY - */ - bool ServerMessage(const std::string &messagetype, const std::string &prefix, std::deque ¶ms, const std::string &sourceserv); - - /** ENCAP command - */ - bool Encap(const std::string &prefix, std::deque ¶ms); - - /** OPERQUIT command - */ - bool OperQuit(const std::string &prefix, std::deque ¶ms); - - /** SVSJOIN - */ - bool ServiceJoin(const std::string &prefix, std::deque ¶ms); - - /** SVSPART - */ - bool ServicePart(const std::string &prefix, std::deque ¶ms); - - /** KILL - */ - bool RemoteKill(const std::string &prefix, std::deque ¶ms); - - /** PONG - */ - bool LocalPong(const std::string &prefix, std::deque ¶ms); - - /** METADATA - */ - bool MetaData(const std::string &prefix, std::deque ¶ms); - - /** VERSION - */ - bool ServerVersion(const std::string &prefix, std::deque ¶ms); - - /** CHGHOST - */ - bool ChangeHost(const std::string &prefix, std::deque ¶ms); - - /** ADDLINE - */ - bool AddLine(const std::string &prefix, std::deque ¶ms); - - /** DELLINE - */ - bool DelLine(const std::string &prefix, std::deque ¶ms); - - /** CHGNAME - */ - bool ChangeName(const std::string &prefix, std::deque ¶ms); - - /** WHOIS - */ - bool Whois(const std::string &prefix, std::deque ¶ms); - - /** PUSH - */ - bool Push(const std::string &prefix, std::deque ¶ms); - - /** TIME - */ - bool Time(const std::string &prefix, std::deque ¶ms); - - /** PING - */ - bool LocalPing(const std::string &prefix, std::deque ¶ms); - - /** Remove all modes from a channel, including statusmodes (+qaovh etc), simplemodes, parameter modes. - * This does not update the timestamp of the target channel, this must be done seperately. - */ - bool RemoveStatus(const std::string &prefix, std::deque ¶ms); - - /** <- (remote) <- SERVER - */ - bool RemoteServer(const std::string &prefix, std::deque ¶ms); + void Error(parameterlist ¶ms); /** (local) -> SERVER */ - bool Outbound_Reply_Server(std::deque ¶ms); + bool Outbound_Reply_Server(parameterlist ¶ms); /** (local) <- SERVER */ - bool Inbound_Server(std::deque ¶ms); + bool Inbound_Server(parameterlist ¶ms); - /** Handle netsplit + /** Handle IRC line split */ - void Split(const std::string &line, std::deque &n); + void Split(const std::string &line, std::string& prefix, std::string& command, parameterlist ¶ms); /** Process complete line from buffer */ - bool ProcessLine(std::string &line); + void ProcessLine(std::string &line); - /** Get this server's name - */ - virtual std::string GetName(); + void ProcessConnectedLine(std::string& prefix, std::string& command, parameterlist& params); /** Handle socket timeout from connect() */ - virtual void OnTimeout(); - - /** Handle socket close event + void OnTimeout(); + /** Handle server quit on close */ - virtual void OnClose(); -}; + void Close(); -/* Used to validate the value lengths of multiple parameters for a command */ -struct cmd_validation -{ - const char* item; - size_t param; - size_t length; -}; - -/* Used to validate the length values in CAPAB CAPABILITIES */ -struct cap_validation -{ - const char* reason; - const char* key; - size_t size; + /** Fixes messages coming from old servers so the new command handlers understand them + */ + bool PreProcessOldProtocolMessage(User*& who, std::string& cmd, std::vector& params); }; - -#endif -