From 034343f08ee58495d1224801a4528c919638e712 Mon Sep 17 00:00:00 2001 From: brain Date: Thu, 18 Jan 2007 18:04:21 +0000 Subject: Start of moving m_spanningtree into a dir so we can split it, cutting down ram use during compile, and compile time git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@6372 e03df62e-2008-0410-955e-edbf42e46eb7 --- src/modules/m_spanningtree.cpp | 5487 ----------------------------------- src/modules/m_spanningtree/main.cpp | 5487 +++++++++++++++++++++++++++++++++++ 2 files changed, 5487 insertions(+), 5487 deletions(-) delete mode 100644 src/modules/m_spanningtree.cpp create mode 100644 src/modules/m_spanningtree/main.cpp (limited to 'src') diff --git a/src/modules/m_spanningtree.cpp b/src/modules/m_spanningtree.cpp deleted file mode 100644 index 9d0f2b53c..000000000 --- a/src/modules/m_spanningtree.cpp +++ /dev/null @@ -1,5487 +0,0 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ - * - * InspIRCd: (C) 2002-2007 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits - * - * This program is free but copyrighted software; see - * the file COPYING for details. - * - * --------------------------------------------------- - */ - -/* $ModDesc: Povides a spanning tree server link protocol */ - -#include "configreader.h" -#include "users.h" -#include "channels.h" -#include "modules.h" -#include "commands/cmd_whois.h" -#include "commands/cmd_stats.h" -#include "socket.h" -#include "inspircd.h" -#include "wildcard.h" -#include "xline.h" -#include "transport.h" - -/** If you make a change which breaks the protocol, increment this. - * If you completely change the protocol, completely change the number. - * - * IMPORTANT: If you make changes, document your changes here, without fail: - * http://www.inspircd.org/wiki/List_of_protocol_changes_between_versions - * - * Failure to document your protocol changes will result in a painfully - * painful death by pain. You have been warned. - */ -const long ProtocolVersion = 1103; - -/* - * The server list in InspIRCd is maintained as two structures - * which hold the data in different ways. Most of the time, we - * want to very quicky obtain three pieces of information: - * - * (1) The information on a server - * (2) The information on the server we must send data through - * to actually REACH the server we're after - * (3) Potentially, the child/parent objects of this server - * - * The InspIRCd spanning protocol provides easy access to these - * by storing the data firstly in a recursive structure, where - * each item references its parent item, and a dynamic list - * of child items, and another structure which stores the items - * hashed, linearly. This means that if we want to find a server - * by name quickly, we can look it up in the hash, avoiding - * any O(n) lookups. If however, during a split or sync, we want - * to apply an operation to a server, and any of its child objects - * we can resort to recursion to walk the tree structure. - * Any socket can have one of five states at any one time. - * The LISTENER state indicates a socket which is listening - * for connections. It cannot receive data itself, only incoming - * sockets. - * The CONNECTING state indicates an outbound socket which is - * waiting to be writeable. - * The WAIT_AUTH_1 state indicates the socket is outbound and - * has successfully connected, but has not yet sent and received - * SERVER strings. - * The WAIT_AUTH_2 state indicates that the socket is inbound - * (allocated by a LISTENER) but has not yet sent and received - * SERVER strings. - * The CONNECTED state represents a fully authorized, fully - * connected server. - */ -enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED }; - -/* Foward declarations */ -class TreeServer; -class TreeSocket; -class Link; -class ModuleSpanningTree; -class SpanningTreeUtilities; - -/* This hash_map holds the hash equivalent of the server - * tree, used for rapid linear lookups. - */ -typedef nspace::hash_map, irc::StrHashComp> server_hash; - -typedef std::map TreeServerList; - -/** A group of modules that implement InspSocketHook - * that we can use to hook our server to server connections. - */ -typedef std::map hookmodules; - -/** The Link class might as well be a struct, - * but this is C++ and we don't believe in structs (!). - * It holds the entire information of one - * tag from the main config file. We maintain a list - * of them, and populate the list on rehash/load. - */ -class Link : public classbase -{ - public: - irc::string Name; - std::string IPAddr; - int Port; - std::string SendPass; - std::string RecvPass; - unsigned long AutoConnect; - time_t NextConnectTime; - bool HiddenFromStats; - std::string FailOver; - std::string Hook; - int Timeout; -}; - -class HandshakeTimer : public InspTimer -{ - private: - InspIRCd* Instance; - TreeSocket* sock; - Link* lnk; - SpanningTreeUtilities* Utils; - int thefd; - public: - HandshakeTimer(InspIRCd* Inst, TreeSocket* s, Link* l, SpanningTreeUtilities* u); - virtual void Tick(time_t TIME); -}; - - -/** Contains helper functions and variables for this module, - * and keeps them out of the global namespace - */ -class SpanningTreeUtilities -{ - private: - /** Creator server - */ - InspIRCd* ServerInstance; - public: - /** Creator module - */ - ModuleSpanningTree* Creator; - /** Flatten links and /MAP for non-opers - */ - bool FlatLinks; - /** Hide U-Lined servers in /MAP and /LINKS - */ - bool HideULines; - /** Announce TS changes to channels on merge - */ - bool AnnounceTSChange; - /** Synchronize timestamps between servers - */ - bool EnableTimeSync; - /** Socket bindings for listening sockets - */ - std::vector Bindings; - /** This variable represents the root of the server tree - */ - TreeServer *TreeRoot; - /** IPs allowed to link to us - */ - std::vector ValidIPs; - /** Hash of currently connected servers by name - */ - server_hash serverlist; - /** Holds the data from the tags in the conf - */ - std::vector LinkBlocks; - /** Holds a bitmask of queued xline types waiting to be applied. - * Will be a mask containing values APPLY_GLINES, APPLY_KLINES, - * APPLY_QLINES and APPLY_ZLINES. - */ - int lines_to_apply; - - hookmodules hooks; - std::vector hooknames; - - /** Initialise utility class - */ - SpanningTreeUtilities(InspIRCd* Instance, ModuleSpanningTree* Creator); - /** Destroy class and free listeners etc - */ - ~SpanningTreeUtilities(); - /** Send a message from this server to one other local or remote - */ - bool DoOneToOne(const std::string &prefix, const std::string &command, std::deque ¶ms, std::string target); - /** Send a message from this server to all but one other, local or remote - */ - bool DoOneToAllButSender(const std::string &prefix, const std::string &command, std::deque ¶ms, std::string omit); - /** Send a message from this server to all but one other, local or remote - */ - bool DoOneToAllButSender(const char* prefix, const char* command, std::deque ¶ms, std::string omit); - /** Send a message from this server to all others - */ - bool DoOneToMany(const std::string &prefix, const std::string &command, std::deque ¶ms); - /** Send a message from this server to all others - */ - bool DoOneToMany(const char* prefix, const char* command, std::deque ¶ms); - /** Send a message from this server to all others, without doing any processing on the command (e.g. send it as-is with colons and all) - */ - bool DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, std::deque ¶ms); - /** Read the spanningtree module's tags from the config file - */ - void ReadConfiguration(bool rebind); - /** Add a server to the server list for GetListOfServersForChannel - */ - void AddThisServer(TreeServer* server, TreeServerList &list); - /** Compile a list of servers which contain members of channel c - */ - void GetListOfServersForChannel(chanrec* c, TreeServerList &list, char status, const CUList &exempt_list); - /** Find a server by name - */ - TreeServer* FindServer(const std::string &ServerName); - /** Find a route to a server by name - */ - TreeServer* BestRouteTo(const std::string &ServerName); - /** Find a server by glob mask - */ - TreeServer* FindServerMask(const std::string &ServerName); - /** Returns true if this is a server name we recognise - */ - bool IsServer(const std::string &ServerName); - /** Attempt to connect to the failover link of link x - */ - void DoFailOver(Link* x); - /** Find a link tag from a server name - */ - Link* FindLink(const std::string& name); -}; - - -/** Each server in the tree is represented by one class of - * type TreeServer. A locally connected TreeServer can - * have a class of type TreeSocket associated with it, for - * remote servers, the TreeSocket entry will be NULL. - * Each server also maintains a pointer to its parent - * (NULL if this server is ours, at the top of the tree) - * and a pointer to its "Route" (see the comments in the - * constructors below), and also a dynamic list of pointers - * to its children which can be iterated recursively - * if required. Creating or deleting objects of type - i* TreeServer automatically maintains the hash_map of - * TreeServer items, deleting and inserting them as they - * are created and destroyed. - */ -class TreeServer : public classbase -{ - InspIRCd* ServerInstance; /* Creator */ - TreeServer* Parent; /* Parent entry */ - TreeServer* Route; /* Route entry */ - std::vector Children; /* List of child objects */ - irc::string ServerName; /* Server's name */ - std::string ServerDesc; /* Server's description */ - std::string VersionString; /* Version string or empty string */ - int UserCount; /* Not used in this version */ - int OperCount; /* Not used in this version */ - TreeSocket* Socket; /* For directly connected servers this points at the socket object */ - time_t NextPing; /* After this time, the server should be PINGed*/ - bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */ - SpanningTreeUtilities* Utils; /* Utility class */ - - public: - - /** We don't use this constructor. Its a dummy, and won't cause any insertion - * of the TreeServer into the hash_map. See below for the two we DO use. - */ - TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance) : ServerInstance(Instance), Utils(Util) - { - Parent = NULL; - ServerName = ""; - ServerDesc = ""; - VersionString = ""; - UserCount = OperCount = 0; - VersionString = ServerInstance->GetVersionString(); - } - - /** We use this constructor only to create the 'root' item, Utils->TreeRoot, which - * represents our own server. Therefore, it has no route, no parent, and - * no socket associated with it. Its version string is our own local version. - */ - TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance, std::string Name, std::string Desc) : ServerInstance(Instance), ServerName(Name.c_str()), ServerDesc(Desc), Utils(Util) - { - Parent = NULL; - VersionString = ""; - UserCount = ServerInstance->UserCount(); - OperCount = ServerInstance->OperCount(); - VersionString = ServerInstance->GetVersionString(); - Route = NULL; - Socket = NULL; /* Fix by brain */ - AddHashEntry(); - } - - /** When we create a new server, we call this constructor to initialize it. - * This constructor initializes the server's Route and Parent, and sets up - * its ping counters so that it will be pinged one minute from now. - */ - TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance, std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) - : ServerInstance(Instance), Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock), Utils(Util) - { - VersionString = ""; - UserCount = OperCount = 0; - this->SetNextPingTime(time(NULL) + 60); - this->SetPingFlag(); - - /* find the 'route' for this server (e.g. the one directly connected - * to the local server, which we can use to reach it) - * - * In the following example, consider we have just added a TreeServer - * class for server G on our network, of which we are server A. - * To route traffic to G (marked with a *) we must send the data to - * B (marked with a +) so this algorithm initializes the 'Route' - * value to point at whichever server traffic must be routed through - * to get here. If we were to try this algorithm with server B, - * the Route pointer would point at its own object ('this'). - * - * A - * / \ - * + B C - * / \ \ - * D E F - * / \ - * * G H - * - * We only run this algorithm when a server is created, as - * the routes remain constant while ever the server exists, and - * do not need to be re-calculated. - */ - - Route = Above; - if (Route == Utils->TreeRoot) - { - Route = this; - } - else - { - while (this->Route->GetParent() != Utils->TreeRoot) - { - this->Route = Route->GetParent(); - } - } - - /* Because recursive code is slow and takes a lot of resources, - * we store two representations of the server tree. The first - * is a recursive structure where each server references its - * children and its parent, which is used for netbursts and - * netsplits to dump the whole dataset to the other server, - * and the second is used for very fast lookups when routing - * messages and is instead a hash_map, where each item can - * be referenced by its server name. The AddHashEntry() - * call below automatically inserts each TreeServer class - * into the hash_map as it is created. There is a similar - * maintainance call in the destructor to tidy up deleted - * servers. - */ - - this->AddHashEntry(); - } - - int QuitUsers(const std::string &reason) - { - const char* reason_s = reason.c_str(); - std::vector time_to_die; - for (user_hash::iterator n = ServerInstance->clientlist->begin(); n != ServerInstance->clientlist->end(); n++) - { - if (!strcmp(n->second->server, this->ServerName.c_str())) - { - time_to_die.push_back(n->second); - } - } - for (std::vector::iterator n = time_to_die.begin(); n != time_to_die.end(); n++) - { - userrec* a = (userrec*)*n; - if (!IS_LOCAL(a)) - userrec::QuitUser(ServerInstance,a,reason_s); - } - return time_to_die.size(); - } - - /** This method is used to add the structure to the - * hash_map for linear searches. It is only called - * by the constructors. - */ - void AddHashEntry() - { - server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str()); - if (iter == Utils->serverlist.end()) - Utils->serverlist[this->ServerName.c_str()] = this; - } - - /** This method removes the reference to this object - * from the hash_map which is used for linear searches. - * It is only called by the default destructor. - */ - void DelHashEntry() - { - server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str()); - if (iter != Utils->serverlist.end()) - Utils->serverlist.erase(iter); - } - - /** These accessors etc should be pretty self- - * explanitory. - */ - TreeServer* GetRoute() - { - return Route; - } - - std::string GetName() - { - return ServerName.c_str(); - } - - std::string GetDesc() - { - return ServerDesc; - } - - std::string GetVersion() - { - return VersionString; - } - - void SetNextPingTime(time_t t) - { - this->NextPing = t; - LastPingWasGood = false; - } - - time_t NextPingTime() - { - return NextPing; - } - - bool AnsweredLastPing() - { - return LastPingWasGood; - } - - void SetPingFlag() - { - LastPingWasGood = true; - } - - int GetUserCount() - { - return UserCount; - } - - void AddUserCount() - { - UserCount++; - } - - void DelUserCount() - { - UserCount--; - } - - int GetOperCount() - { - return OperCount; - } - - TreeSocket* GetSocket() - { - return Socket; - } - - TreeServer* GetParent() - { - return Parent; - } - - void SetVersion(const std::string &Version) - { - VersionString = Version; - } - - unsigned int ChildCount() - { - return Children.size(); - } - - TreeServer* GetChild(unsigned int n) - { - if (n < Children.size()) - { - /* Make sure they cant request - * an out-of-range object. After - * all we know what these programmer - * types are like *grin*. - */ - return Children[n]; - } - else - { - return NULL; - } - } - - void AddChild(TreeServer* Child) - { - Children.push_back(Child); - } - - bool DelChild(TreeServer* Child) - { - for (std::vector::iterator a = Children.begin(); a < Children.end(); a++) - { - if (*a == Child) - { - Children.erase(a); - return true; - } - } - return false; - } - - /** Removes child nodes of this node, and of that node, etc etc. - * This is used during netsplits to automatically tidy up the - * server tree. It is slow, we don't use it for much else. - */ - bool Tidy() - { - bool stillchildren = true; - while (stillchildren) - { - stillchildren = false; - for (std::vector::iterator a = Children.begin(); a < Children.end(); a++) - { - TreeServer* s = (TreeServer*)*a; - s->Tidy(); - Children.erase(a); - DELETE(s); - stillchildren = true; - break; - } - } - return true; - } - - ~TreeServer() - { - /* We'd better tidy up after ourselves, eh? */ - this->DelHashEntry(); - } -}; - -/** Yay for fast searches! - * This is hundreds of times faster than recursion - * or even scanning a linked list, especially when - * there are more than a few servers to deal with. - * (read as: lots). - */ -TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName) -{ - server_hash::iterator iter; - iter = serverlist.find(ServerName.c_str()); - if (iter != serverlist.end()) - { - return iter->second; - } - else - { - return NULL; - } -} - -/** Returns the locally connected server we must route a - * message through to reach server 'ServerName'. This - * only applies to one-to-one and not one-to-many routing. - * See the comments for the constructor of TreeServer - * for more details. - */ -TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName) -{ - if (ServerName.c_str() == TreeRoot->GetName()) - return NULL; - TreeServer* Found = FindServer(ServerName); - if (Found) - { - return Found->GetRoute(); - } - else - { - return NULL; - } -} - -/** Find the first server matching a given glob mask. - * Theres no find-using-glob method of hash_map [awwww :-(] - * so instead, we iterate over the list using an iterator - * and match each one until we get a hit. Yes its slow, - * deal with it. - */ -TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName) -{ - for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++) - { - if (match(i->first.c_str(),ServerName.c_str())) - return i->second; - } - return NULL; -} - -/* A convenient wrapper that returns true if a server exists */ -bool SpanningTreeUtilities::IsServer(const std::string &ServerName) -{ - return (FindServer(ServerName) != NULL); -} - - -/** Handle /RCONNECT - */ -class cmd_rconnect : public command_t -{ - Module* Creator; - SpanningTreeUtilities* Utils; - public: - cmd_rconnect (InspIRCd* Instance, Module* Callback, SpanningTreeUtilities* Util) : command_t(Instance, "RCONNECT", 'o', 2), Creator(Callback), Utils(Util) - { - this->source = "m_spanningtree.so"; - syntax = " "; - } - - CmdResult Handle (const char** parameters, int pcnt, userrec *user) - { - if (IS_LOCAL(user)) - { - if (!Utils->FindServer(parameters[0])) - { - user->WriteServ("NOTICE %s :*** RCONNECT: Server \002%s\002 isn't connected to the network!", user->nick, parameters[0]); - return CMD_FAILURE; - } - - user->WriteServ("NOTICE %s :*** RCONNECT: Sending remote connect to \002%s\002 to connect server \002%s\002.",user->nick,parameters[0],parameters[1]); - } - - /* Is this aimed at our server? */ - if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameters[0])) - { - /* Yes, initiate the given connect */ - ServerInstance->SNO->WriteToSnoMask('l',"Remote CONNECT from %s matching \002%s\002, connecting server \002%s\002",user->nick,parameters[0],parameters[1]); - const char* para[1]; - para[0] = parameters[1]; - std::string original_command = std::string("CONNECT ") + parameters[1]; - Creator->OnPreCommand("CONNECT", para, 1, user, true, original_command); - } - - return CMD_SUCCESS; - } -}; - - - -/** Every SERVER connection inbound or outbound is represented by - * an object of type TreeSocket. - * TreeSockets, being inherited from InspSocket, 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 InspSocket -{ - SpanningTreeUtilities* Utils; - std::string myhost; - std::string in_buffer; - ServerState LinkState; - std::string InboundServerName; - std::string InboundDescription; - int num_lost_users; - int num_lost_servers; - time_t NextPing; - bool LastPingWasGood; - bool bursting; - unsigned int keylength; - std::string ModuleList; - std::map CapKeys; - Module* Hook; - - public: - - /** Because most of the I/O gubbins are encapsulated within - * InspSocket, 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, bool listening, unsigned long maxtime, Module* HookMod = NULL) - : InspSocket(SI, host, port, listening, maxtime), Utils(Util), Hook(HookMod) - { - myhost = host; - this->LinkState = LISTENER; - if (listening && Hook) - InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); - } - - TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName, Module* HookMod = NULL) - : InspSocket(SI, host, port, listening, maxtime), Utils(Util), Hook(HookMod) - { - myhost = ServerName; - this->LinkState = CONNECTING; - - if (Hook) - InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); - } - - /** 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) - : InspSocket(SI, newfd, ip), Utils(Util), Hook(HookMod) - { - this->LinkState = WAIT_AUTH_1; - - /* If we have a transport module hooked to the parent, hook the same module to this - * socket, and set a timer waiting for handshake before we send CAPAB etc. - */ - if (Hook) - { - InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); - Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(Utils->LinkBlocks[0]), this->Utils)); - } - else - { - /* Otherwise, theres no lower layer transport in plain TCP/IP, - * so just send the capabilities right now. - */ - this->SendCapabilities(); - } - } - - ServerState GetLinkState() - { - return this->LinkState; - } - - Module* GetHook() - { - return this->Hook; - } - - ~TreeSocket() - { - if (Hook) - InspSocketUnhookRequest(this, (Module*)Utils->Creator, Hook).Send(); - } - - /** When an outbound connection finishes connecting, we receive - * this event, and must send our SERVER string to the other - * side. If the other side is happy, as outlined in the server - * to server docs on the inspircd.org site, the other side - * will then send back its own server string. - */ - virtual bool OnConnected() - { - if (this->LinkState == CONNECTING) - { - /* we do not need to change state here. */ - for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) - { - if (x->Name == this->myhost) - { - this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "" : this->GetIP())+"] started."); - - if (Hook) - { - InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); - this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "" : this->GetIP())+"] using transport \2"+x->Hook+"\2"); - } - else - this->SendCapabilities(); - - /* found who we're supposed to be connecting to, send the neccessary gubbins. */ - if (Hook) - Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(*x), this->Utils)); - else - this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc); - - return true; - } - } - } - /* There is a (remote) chance that between the /CONNECT and the connection - * being accepted, some muppet has removed the block and rehashed. - * If that happens the connection hangs here until it's closed. Unlikely - * and rather harmless. - */ - this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2 lost link tag(!)"); - return true; - } - - virtual void OnError(InspSocketError e) - { - /* We don't handle this method, because all our - * dirty work is done in OnClose() (see below) - * which is still called on error conditions too. - */ - if (e == I_ERR_CONNECT) - { - this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Connection to \002"+myhost+"\002 refused"); - Link* MyLink = Utils->FindLink(myhost); - if (MyLink) - Utils->DoFailOver(MyLink); - } - } - - virtual int OnDisconnect() - { - /* For the same reason as above, we don't - * handle OnDisconnect() - */ - return true; - } - - /** 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) - { - char command[1024]; - for (unsigned int q = 0; q < Current->ChildCount(); q++) - { - TreeServer* recursive_server = Current->GetChild(q); - if (recursive_server != s) - { - snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str()); - this->WriteLine(command); - this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion()); - /* down to next level */ - this->SendServers(recursive_server, s, hops+1); - } - } - } - - std::string MyCapabilities() - { - std::vector modlist; - std::string capabilities = ""; - - for (int i = 0; i <= this->Instance->GetModuleCount(); i++) - { - if (this->Instance->modules[i]->GetVersion().Flags & VF_COMMON) - modlist.push_back(this->Instance->Config->module_names[i]); - } - sort(modlist.begin(),modlist.end()); - for (unsigned int i = 0; i < modlist.size(); i++) - { - if (i) - capabilities = capabilities + ","; - capabilities = capabilities + modlist[i]; - } - return capabilities; - } - - void SendCapabilities() - { - irc::commasepstream modulelist(MyCapabilities()); - - this->WriteLine("CAPAB START"); - - /* Send module names, split at 509 length */ - std::string item = "*"; - std::string line = "CAPAB MODULES "; - while ((item = modulelist.GetToken()) != "") - { - if (line.length() + item.length() + 1 > 509) - { - this->WriteLine(line); - line = "CAPAB MODULES "; - } - - if (line != "CAPAB MODULES ") - line.append(","); - - line.append(item); - } - if (line != "CAPAB MODULES ") - this->WriteLine(line); - - int ip6 = 0; - int ip6support = 0; -#ifdef IPV6 - ip6 = 1; -#endif -#ifdef SUPPORT_IP6LINKS - ip6support = 1; -#endif - this->WriteLine("CAPAB CAPABILITIES :NICKMAX="+ConvToStr(NICKMAX)+" HALFOP="+ConvToStr(this->Instance->Config->AllowHalfop)+" CHANMAX="+ConvToStr(CHANMAX)+" MAXMODES="+ConvToStr(MAXMODES)+" IDENTMAX="+ConvToStr(IDENTMAX)+" MAXQUIT="+ConvToStr(MAXQUIT)+" MAXTOPIC="+ConvToStr(MAXTOPIC)+" MAXKICK="+ConvToStr(MAXKICK)+" MAXGECOS="+ConvToStr(MAXGECOS)+" MAXAWAY="+ConvToStr(MAXAWAY)+" IP6NATIVE="+ConvToStr(ip6)+" IP6SUPPORT="+ConvToStr(ip6support)+" PROTOCOL="+ConvToStr(ProtocolVersion)); - - this->WriteLine("CAPAB END"); - } - - /* Check a comma seperated list for an item */ - bool HasItem(const std::string &list, const std::string &item) - { - irc::commasepstream seplist(list); - - std::string item2 = "*"; - while ((item2 = seplist.GetToken()) != "") - { - if (item2 == item) - return true; - } - - return false; - } - - /* Isolate and return the elements that are different between two comma seperated lists */ - std::string ListDifference(const std::string &one, const std::string &two) - { - irc::commasepstream list_one(one); - std::string item = "*"; - std::string result = ""; - while ((item = list_one.GetToken()) != "") - { - if (!HasItem(two, item)) - { - result.append(" "); - result.append(item); - } - } - return result; - } - - bool Capab(const std::deque ¶ms) - { - if (params.size() < 1) - { - this->WriteLine("ERROR :Invalid number of parameters for CAPAB - Mismatched version"); - return false; - } - - if (params[0] == "START") - { - this->ModuleList = ""; - this->CapKeys.clear(); - } - else if (params[0] == "END") - { - std::string reason = ""; - int ip6support = 0; -#ifdef SUPPORT_IP6LINKS - ip6support = 1; -#endif - /* Compare ModuleList and check CapKeys... - * Maybe this could be tidier? -- Brain - */ - if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length())) - { - std::string diff = ListDifference(this->ModuleList, this->MyCapabilities()); - if (!diff.length()) - { - diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList); - } - else - { - diff = "this server:" + diff; - } - if (diff.length() == 12) - reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists."; - else - reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff; - } - - if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support)))) - reason = "We don't both support linking to IPV6 servers"; - - if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support)) - reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers"; - - if (((this->CapKeys.find("NICKMAX") == this->CapKeys.end()) || ((this->CapKeys.find("NICKMAX") != this->CapKeys.end()) && (this->CapKeys.find("NICKMAX")->second != ConvToStr(NICKMAX))))) - reason = "Maximum nickname lengths differ or remote nickname length not specified"; - - if (((this->CapKeys.find("PROTOCOL") == this->CapKeys.end()) || ((this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) && (this->CapKeys.find("PROTOCOL")->second != ConvToStr(ProtocolVersion))))) - { - if (this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) - { - reason = "Mismatched protocol versions "+this->CapKeys.find("PROTOCOL")->second+" and "+ConvToStr(ProtocolVersion); - } - else - { - reason = "Protocol version not specified"; - } - } - - if (((this->CapKeys.find("HALFOP") == this->CapKeys.end()) && (Instance->Config->AllowHalfop)) || ((this->CapKeys.find("HALFOP") != this->CapKeys.end()) && (this->CapKeys.find("HALFOP")->second != ConvToStr(Instance->Config->AllowHalfop)))) - reason = "We don't both have halfop support enabled/disabled identically"; - - if (((this->CapKeys.find("IDENTMAX") == this->CapKeys.end()) || ((this->CapKeys.find("IDENTMAX") != this->CapKeys.end()) && (this->CapKeys.find("IDENTMAX")->second != ConvToStr(IDENTMAX))))) - reason = "Maximum ident lengths differ or remote ident length not specified"; - - if (((this->CapKeys.find("CHANMAX") == this->CapKeys.end()) || ((this->CapKeys.find("CHANMAX") != this->CapKeys.end()) && (this->CapKeys.find("CHANMAX")->second != ConvToStr(CHANMAX))))) - reason = "Maximum channel lengths differ or remote channel length not specified"; - - if (((this->CapKeys.find("MAXMODES") == this->CapKeys.end()) || ((this->CapKeys.find("MAXMODES") != this->CapKeys.end()) && (this->CapKeys.find("MAXMODES")->second != ConvToStr(MAXMODES))))) - reason = "Maximum modes per line differ or remote modes per line not specified"; - - if (((this->CapKeys.find("MAXQUIT") == this->CapKeys.end()) || ((this->CapKeys.find("MAXQUIT") != this->CapKeys.end()) && (this->CapKeys.find("MAXQUIT")->second != ConvToStr(MAXQUIT))))) - reason = "Maximum quit lengths differ or remote quit length not specified"; - - if (((this->CapKeys.find("MAXTOPIC") == this->CapKeys.end()) || ((this->CapKeys.find("MAXTOPIC") != this->CapKeys.end()) && (this->CapKeys.find("MAXTOPIC")->second != ConvToStr(MAXTOPIC))))) - reason = "Maximum topic lengths differ or remote topic length not specified"; - - if (((this->CapKeys.find("MAXKICK") == this->CapKeys.end()) || ((this->CapKeys.find("MAXKICK") != this->CapKeys.end()) && (this->CapKeys.find("MAXKICK")->second != ConvToStr(MAXKICK))))) - reason = "Maximum kick lengths differ or remote kick length not specified"; - - if (((this->CapKeys.find("MAXGECOS") == this->CapKeys.end()) || ((this->CapKeys.find("MAXGECOS") != this->CapKeys.end()) && (this->CapKeys.find("MAXGECOS")->second != ConvToStr(MAXGECOS))))) - reason = "Maximum GECOS (fullname) lengths differ or remote GECOS length not specified"; - - if (((this->CapKeys.find("MAXAWAY") == this->CapKeys.end()) || ((this->CapKeys.find("MAXAWAY") != this->CapKeys.end()) && (this->CapKeys.find("MAXAWAY")->second != ConvToStr(MAXAWAY))))) - reason = "Maximum awaymessage lengths differ or remote awaymessage length not specified"; - - if (reason.length()) - { - this->WriteLine("ERROR :CAPAB negotiation failed: "+reason); - return false; - } - } - else if ((params[0] == "MODULES") && (params.size() == 2)) - { - if (!this->ModuleList.length()) - { - this->ModuleList.append(params[1]); - } - else - { - this->ModuleList.append(","); - this->ModuleList.append(params[1]); - } - } - else if ((params[0] == "CAPABILITIES") && (params.size() == 2)) - { - irc::tokenstream capabs(params[1]); - std::string item = "*"; - while ((item = capabs.GetToken()) != "") - { - /* Process each key/value pair */ - std::string::size_type equals = item.rfind('='); - if (equals != std::string::npos) - { - std::string var = item.substr(0, equals); - std::string value = item.substr(equals+1, item.length()); - CapKeys[var] = value; - } - } - } - - return true; - } - - /** 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) - { - /* recursively squit the servers attached to 'Current'. - * We're going backwards so we don't remove users - * while we still need them ;) - */ - for (unsigned int q = 0; q < Current->ChildCount(); q++) - { - TreeServer* recursive_server = Current->GetChild(q); - this->SquitServer(from,recursive_server); - } - /* Now we've whacked the kids, whack self */ - num_lost_servers++; - num_lost_users += Current->QuitUsers(from); - } - - /** 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) - { - if ((Current) && (Current != Utils->TreeRoot)) - { - Event rmode((char*)Current->GetName().c_str(), (Module*)Utils->Creator, "lost_server"); - rmode.Send(Instance); - - std::deque params; - params.push_back(Current->GetName()); - params.push_back(":"+reason); - Utils->DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName()); - if (Current->GetParent() == Utils->TreeRoot) - { - this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split: "+reason); - } - else - { - this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason); - } - num_lost_servers = 0; - num_lost_users = 0; - std::string from = Current->GetParent()->GetName()+" "+Current->GetName(); - SquitServer(from, Current); - Current->Tidy(); - Current->GetParent()->DelChild(Current); - DELETE(Current); - this->Instance->WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers); - } - else - { - Instance->Log(DEFAULT,"Squit from unknown server"); - } - } - - /** FMODE command - server mode with timestamp checks */ - bool ForceMode(const std::string &source, std::deque ¶ms) - { - /* Chances are this is a 1.0 FMODE without TS */ - if (params.size() < 3) - { - /* No modes were in the command, probably a channel with no modes set on it */ - return true; - } - - bool smode = false; - std::string sourceserv; - - /* Are we dealing with an FMODE from a user, or from a server? */ - userrec* who = this->Instance->FindNick(source); - if (who) - { - /* FMODE from a user, set sourceserv to the users server name */ - sourceserv = who->server; - } - else - { - /* FMODE from a server, create a fake user to receive mode feedback */ - who = new userrec(this->Instance); - who->SetFd(FD_MAGIC_NUMBER); - smode = true; /* Setting this flag tells us we should free the userrec later */ - sourceserv = source; /* Set sourceserv to the actual source string */ - } - const char* modelist[64]; - time_t TS = 0; - int n = 0; - memset(&modelist,0,sizeof(modelist)); - for (unsigned int q = 0; (q < params.size()) && (q < 64); q++) - { - if (q == 1) - { - /* The timestamp is in this position. - * We don't want to pass that up to the - * server->client protocol! - */ - TS = atoi(params[q].c_str()); - } - else - { - /* Everything else is fine to append to the modelist */ - modelist[n++] = params[q].c_str(); - } - - } - /* Extract the TS value of the object, either userrec or chanrec */ - userrec* dst = this->Instance->FindNick(params[0]); - chanrec* chan = NULL; - time_t ourTS = 0; - if (dst) - { - ourTS = dst->age; - } - else - { - chan = this->Instance->FindChan(params[0]); - if (chan) - { - ourTS = chan->age; - } - else - /* Oops, channel doesnt exist! */ - return true; - } - - /* TS is equal: Merge the mode changes, use voooodoooooo on modes - * with parameters. - */ - if (TS == ourTS) - { - ModeHandler* mh = NULL; - unsigned long paramptr = 3; - std::string to_bounce = ""; - std::string to_keep = ""; - std::vector params_to_keep; - std::string params_to_bounce = ""; - bool adding = true; - char cur_change = 1; - char old_change = 0; - char old_bounce_change = 0; - /* Merge modes, basically do special stuff to mode with params */ - for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++) - { - switch (*x) - { - case '-': - adding = false; - break; - case '+': - adding = true; - break; - default: - if (adding) - { - /* We only care about whats being set, - * not whats being unset - */ - mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER); - - if ((mh) && (mh->GetNumParams(adding) > 0) && (!mh->IsListMode())) - { - /* We only want to do special things to - * modes with parameters, we are going to rewrite - * those parameters - */ - ModePair ret; - adding ? cur_change = '+' : cur_change = '-'; - - ret = mh->ModeSet(smode ? NULL : who, dst, chan, params[paramptr]); - - /* The mode is set here, check which we should keep */ - if (ret.first) - { - bool which_to_keep = mh->CheckTimeStamp(TS, ourTS, params[paramptr], ret.second, chan); - - if (which_to_keep == true) - { - /* Keep ours, bounce theirs: - * Send back ours to them and - * drop their mode changs - */ - adding ? cur_change = '+' : cur_change = '-'; - if (cur_change != old_bounce_change) - to_bounce += cur_change; - to_bounce += *x; - old_bounce_change = cur_change; - - if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) - params_to_bounce.append(" ").append(ret.second); - } - else - { - /* Keep theirs: Accept their mode change, - * do nothing else - */ - adding ? cur_change = '+' : cur_change = '-'; - if (cur_change != old_change) - to_keep += cur_change; - to_keep += *x; - old_change = cur_change; - - if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) - params_to_keep.push_back(params[paramptr]); - } - } - else - { - /* Mode isnt set here, we want it */ - adding ? cur_change = '+' : cur_change = '-'; - if (cur_change != old_change) - to_keep += cur_change; - to_keep += *x; - old_change = cur_change; - - if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) - params_to_keep.push_back(params[paramptr]); - } - - paramptr++; - } - else - { - mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER); - - if (mh) - { - adding ? cur_change = '+' : cur_change = '-'; - - /* Just keep this, safe to merge with no checks - * it has no parameters - */ - - if (cur_change != old_change) - to_keep += cur_change; - to_keep += *x; - old_change = cur_change; - - if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) - { - params_to_keep.push_back(params[paramptr++]); - } - } - } - } - else - { - mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER); - - if (mh) - { - /* Taking a mode away */ - adding ? cur_change = '+' : cur_change = '-'; - - if (cur_change != old_change) - to_keep += cur_change; - to_keep += *x; - old_change = cur_change; - - if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) - params_to_keep.push_back(params[paramptr++]); - } - } - break; - } - } - - if (to_bounce.length()) - { - std::deque newparams; - newparams.push_back(params[0]); - newparams.push_back(ConvToStr(ourTS)); - newparams.push_back(to_bounce+params_to_bounce); - Utils->DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv); - } - - if (to_keep.length()) - { - unsigned int n = 2; - unsigned int q = 0; - modelist[0] = params[0].c_str(); - modelist[1] = to_keep.c_str(); - - if (params_to_keep.size() > 0) - { - for (q = 0; (q < params_to_keep.size()) && (q < 64); q++) - { - modelist[n++] = params_to_keep[q].c_str(); - } - } - - if (smode) - { - this->Instance->SendMode(modelist, n, who); - } - else - { - this->Instance->CallCommandHandler("MODE", modelist, n, who); - } - - /* HOT POTATO! PASS IT ON! */ - Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv); - } - } - else - /* U-lined servers always win regardless of their TS */ - if ((TS > ourTS) && (!this->Instance->ULine(source.c_str()))) - { - /* Bounce the mode back to its sender.* We use our lower TS, so the other end - * SHOULD accept it, if its clock is right. - * - * NOTE: We should check that we arent bouncing anything thats already set at this end. - * If we are, bounce +ourmode to 'reinforce' it. This prevents desyncs. - * e.g. They send +l 50, we have +l 10 set. rather than bounce -l 50, we bounce +l 10. - * - * Thanks to jilles for pointing out this one-hell-of-an-issue before i even finished - * writing the code. It took me a while to come up with this solution. - * - * XXX: BE SURE YOU UNDERSTAND THIS CODE FULLY BEFORE YOU MESS WITH IT. - */ - - std::deque newparams; /* New parameter list we send back */ - newparams.push_back(params[0]); /* Target, user or channel */ - newparams.push_back(ConvToStr(ourTS)); /* Timestamp value of the target */ - newparams.push_back(""); /* This contains the mode string. For now - * it's empty, we fill it below. - */ - - /* Intelligent mode bouncing. Don't just invert, reinforce any modes which are already - * set to avoid a desync here. - */ - std::string modebounce = ""; - bool adding = true; - unsigned int t = 3; - ModeHandler* mh = NULL; - char cur_change = 1; - char old_change = 0; - for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++) - { - /* Iterate over all mode chars in the sent set */ - switch (*x) - { - /* Adding or subtracting modes? */ - case '-': - adding = false; - break; - case '+': - adding = true; - break; - default: - /* Find the mode handler for this mode */ - mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER); - - /* Got a mode handler? - * This also prevents us bouncing modes we have no handler for. - */ - if (mh) - { - ModePair ret; - std::string p = ""; - - /* Does the mode require a parameter right now? - * If it does, fetch it if we can - */ - if ((mh->GetNumParams(adding) > 0) && (t < params.size())) - p = params[t++]; - - /* Call the ModeSet method to determine if its set with the - * given parameter here or not. - */ - ret = mh->ModeSet(smode ? NULL : who, dst, chan, p); - - /* XXX: Really. Dont ask. - * Determine from if its set combined with what the current - * 'state' is (adding or not) as to wether we should 'invert' - * or 'reinforce' the mode change - */ - (!ret.first ? (adding ? cur_change = '-' : cur_change = '+') : (!adding ? cur_change = '-' : cur_change = '+')); - - /* Quickly determine if we have 'flipped' from + to -, - * or - to +, to prevent unneccessary +/- chars in the - * output string that waste bandwidth - */ - if (cur_change != old_change) - modebounce += cur_change; - old_change = cur_change; - - /* Add the mode character to the output string */ - modebounce += mh->GetModeChar(); - - /* We got a parameter back from ModeHandler::ModeSet, - * are we supposed to be sending one out right now? - */ - if (ret.second.length()) - { - if (mh->GetNumParams(cur_change == '+') > 0) - /* Yes we're supposed to be sending out - * the parameter. Make sure it goes - */ - newparams.push_back(ret.second); - } - - } - break; - } - } - - /* Update the parameters for FMODE with the new 'bounced' string */ - newparams[2] = modebounce; - /* Only send it back the way it came, no need to send it anywhere else */ - Utils->DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv); - } - else - { - /* The server was ulined, but something iffy is up with the TS. - * Sound the alarm bells! - */ - if ((this->Instance->ULine(sourceserv.c_str())) && (TS > ourTS)) - { - this->Instance->WriteOpers("\2WARNING!\2 U-Lined server '%s' has bad TS for '%s' (accepted change): \2SYNC YOUR CLOCKS\2 to avoid this notice",sourceserv.c_str(),params[0].c_str()); - } - /* Allow the mode, route it to either server or user command handling */ - if (smode) - this->Instance->SendMode(modelist,n,who); - else - this->Instance->CallCommandHandler("MODE", modelist, n, who); - - /* HOT POTATO! PASS IT ON! */ - Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv); - } - /* Are we supposed to free the userrec? */ - if (smode) - DELETE(who); - - return true; - } - - /** FTOPIC command */ - bool ForceTopic(const std::string &source, std::deque ¶ms) - { - if (params.size() != 4) - return true; - time_t ts = atoi(params[1].c_str()); - std::string nsource = source; - - chanrec* c = this->Instance->FindChan(params[0]); - if (c) - { - if ((ts >= c->topicset) || (!*c->topic)) - { - std::string oldtopic = c->topic; - strlcpy(c->topic,params[3].c_str(),MAXTOPIC); - strlcpy(c->setby,params[2].c_str(),NICKMAX-1); - c->topicset = ts; - /* if the topic text is the same as the current topic, - * dont bother to send the TOPIC command out, just silently - * update the set time and set nick. - */ - if (oldtopic != params[3]) - { - userrec* user = this->Instance->FindNick(source); - if (!user) - { - c->WriteChannelWithServ(source.c_str(), "TOPIC %s :%s", c->name, c->topic); - } - else - { - c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic); - nsource = user->server; - } - /* all done, send it on its way */ - params[3] = ":" + params[3]; - Utils->DoOneToAllButSender(source,"FTOPIC",params,nsource); - } - } - - } - - return true; - } - - /** FJOIN, similar to TS6 SJOIN, but not quite. */ - bool ForceJoin(const std::string &source, std::deque ¶ms) - { - /* 1.1 FJOIN works as follows: - * - * Each FJOIN is sent along with a timestamp, and the side with the lowest - * timestamp 'wins'. From this point on we will refer to this side as the - * winner. The side with the higher timestamp loses, from this point on we - * will call this side the loser or losing side. This should be familiar to - * anyone who's dealt with dreamforge or TS6 before. - * - * When two sides of a split heal and this occurs, the following things - * will happen: - * - * If the timestamps are exactly equal, both sides merge their privilages - * and users, as in InspIRCd 1.0 and ircd2.8. The channels have not been - * re-created during a split, this is safe to do. - * - * - * If the timestamps are NOT equal, the losing side removes all privilage - * modes from all of its users that currently exist in the channel, before - * introducing new users into the channel which are listed in the FJOIN - * command's parameters. This means, all modes +ohv, and privilages added - * by modules, such as +qa. The losing side then LOWERS its timestamp value - * of the channel to match that of the winning side, and the modes of the - * users of the winning side are merged in with the losing side. The loser - * then sends out a set of FMODE commands which 'confirm' that it just - * removed all privilage modes from its existing users, which allows for - * services packages to still work correctly without needing to know the - * timestamping rules which InspIRCd follows. In TS6 servers this is always - * a problem, and services packages must contain code which explicitly - * behaves as TS6 does, removing ops from the losing side of a split where - * neccessary within its internal records, as this state information is - * not explicitly echoed out in that protocol. - * - * The winning side on the other hand will ignore all user modes from the - * losing side, so only its own modes get applied. Life is simple for those - * who succeed at internets. :-) - * - * NOTE: Unlike TS6 and dreamforge and other protocols which have SJOIN, - * FJOIN does not contain the simple-modes such as +iklmnsp. Why not, - * you ask? Well, quite simply because we don't need to. They'll be sent - * after the FJOIN by FMODE, and FMODE is timestamped, so in the event - * the losing side sends any modes for the channel which shouldnt win, - * they wont as their timestamp will be too high :-) - */ - - if (params.size() < 3) - return true; - - char first[MAXBUF]; /* The first parameter of the mode command */ - char modestring[MAXBUF]; /* The mode sequence (2nd parameter) of the mode command */ - char* mode_users[127]; /* The values used by the mode command */ - memset(&mode_users,0,sizeof(mode_users)); /* Initialize mode parameters */ - mode_users[0] = first; /* Set this up to be our on-stack value */ - mode_users[1] = modestring; /* Same here as above */ - strcpy(modestring,"+"); /* Initialize the mode sequence to just '+' */ - unsigned int modectr = 2; /* Pointer to the third mode parameter (e.g. the one after the +-sequence) */ - - userrec* who = NULL; /* User we are currently checking */ - std::string channel = params[0]; /* Channel name, as a string */ - time_t TS = atoi(params[1].c_str()); /* Timestamp given to us for remote side */ - bool created = false; - - /* Try and find the channel */ - chanrec* chan = this->Instance->FindChan(channel); - - /* Initialize channel name in the mode parameters */ - strlcpy(mode_users[0],channel.c_str(),MAXBUF); - - /* default TS is a high value, which if we dont have this - * channel will let the other side apply their modes. - */ - time_t ourTS = Instance->Time(true)+600; - - /* Does this channel exist? if it does, get its REAL timestamp */ - if (chan) - ourTS = chan->age; - else - created = true; /* don't perform deops, and set TS to correct time after processing. */ - - /* In 1.1, if they have the newer channel, we immediately clear - * all status modes from our users. We then accept their modes. - * If WE have the newer channel its the other side's job to do this. - * Note that this causes the losing server to send out confirming - * FMODE lines. - */ - if (ourTS > TS) - { - std::deque param_list; - - /* Lower the TS here */ - if (Utils->AnnounceTSChange && chan) - chan->WriteChannelWithServ(Instance->Config->ServerName, - "NOTICE %s :TS for %s changed from %lu to %lu", chan->name, chan->name, ourTS, TS); - ourTS = TS; - - /* Zap all the privilage modes on our side, if the channel exists here */ - if (!created) - { - param_list.push_back(channel); - /* Do this first! */ - chan->age = TS; - this->RemoveStatus(Instance->Config->ServerName, param_list); - } - } - - /* Put the final parameter of the FJOIN into a tokenstream ready to split it */ - irc::tokenstream users(params[2]); - std::string item = "*"; - - /* do this first, so our mode reversals are correctly received by other servers - * if there is a TS collision. - */ - params[2] = ":" + params[2]; - Utils->DoOneToAllButSender(source,"FJOIN",params,source); - - /* Now, process every 'prefixes,nick' pair */ - while (item != "") - { - /* Find next user */ - item = users.GetToken(); - - const char* usr = item.c_str(); - - /* Safety check just to make sure someones not sent us an FJOIN full of spaces - * (is this even possible?) */ - if (usr && *usr) - { - const char* permissions = usr; - int ntimes = 0; - char* nm = new char[MAXBUF]; - char* tnm = nm; - - /* Iterate through all the prefix values, convert them from prefixes - * to mode letters, and append them to the mode sequence - */ - while ((*permissions) && (*permissions != ',') && (ntimes < MAXBUF)) - { - ModeHandler* mh = Instance->Modes->FindPrefix(*permissions); - if (mh) - { - /* This is a valid prefix */ - ntimes++; - *tnm++ = mh->GetModeChar(); - } - else - { - /* Not a valid prefix... - * danger bill bobbertson! (that's will robinsons older brother ;-) ...) - */ - this->Instance->WriteOpers("ERROR: We received a user with an unknown prefix '%c'. Closed connection to avoid a desync.",*permissions); - this->WriteLine(std::string("ERROR :Invalid prefix '")+(*permissions)+"' in FJOIN"); - return false; - } - usr++; - permissions++; - } - - /* Null terminate modes */ - *tnm = 0; - /* Advance past the comma, to the nick */ - usr++; - - /* Check the user actually exists */ - who = this->Instance->FindNick(usr); - if (who) - { - /* Did they get any modes? How many times? */ - strlcat(modestring, nm, MAXBUF); - for (int k = 0; k < ntimes; k++) - mode_users[modectr++] = strdup(usr); - - /* Free temporary buffer used for mode sequence */ - delete[] nm; - - /* Check that the user's 'direction' is correct - * based on the server sending the FJOIN. We must - * check each nickname in turn, because the origin of - * the FJOIN may be different to the origin of the nicks - * in the command itself. - */ - TreeServer* route_back_again = Utils->BestRouteTo(who->server); - if ((!route_back_again) || (route_back_again->GetSocket() != this)) - { - /* Oh dear oh dear. */ - continue; - } - /* Finally, we can actually place the user into the channel. - * We're sure its right. Final answer, phone a friend. - */ - chanrec::JoinUser(this->Instance, who, channel.c_str(), true, ""); - - /* Have we already queued up MAXMODES modes with parameters - * (+qaohv) ready to be sent to the server? - */ - if (modectr >= (MAXMODES-1)) - { - /* Only actually give the users any status if we lost - * the FJOIN or drew (equal timestamps). - * It isn't actually possible for ourTS to be > TS here, - * only possible to actually have ourTS == TS, or - * ourTS < TS, because if we lost, we already lowered - * our TS above before we entered this loop. We only - * check >= as a safety measure, in case someone stuffed - * up. If someone DID stuff up, it was most likely me. - * Note: I do not like baseball bats in the face... - */ - if (ourTS >= TS) - { - this->Instance->SendMode((const char**)mode_users,modectr,who); - - /* Something stuffed up, and for some reason, the timestamp is - * NOT lowered right now and should be. Lower it. Usually this - * code won't be executed, doubtless someone will remove it some - * day soon. - */ - if (ourTS > TS) - { - Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS); - chan->age = TS; - ourTS = TS; - } - } - - /* Reset all this back to defaults, and - * free any ram we have left allocated. - */ - strcpy(mode_users[1],"+"); - for (unsigned int f = 2; f < modectr; f++) - free(mode_users[f]); - modectr = 2; - } - } - else - { - /* Remember to free this */ - delete[] nm; - /* If we got here, there's a nick in FJOIN which doesnt exist on this server. - * We don't try to process the nickname here (that WOULD cause a segfault because - * we'd be playing with null pointers) however, we DO pass the nickname on, just - * in case somehow we're desynched, so that other users which might be able to see - * the nickname get their fair chance to process it. - */ - Instance->Log(SPARSE,"Warning! Invalid user in FJOIN to channel %s IGNORED", channel.c_str()); - continue; - } - } - } - - /* there werent enough modes built up to flush it during FJOIN, - * or, there are a number left over. flush them out. - */ - if ((modectr > 2) && (who) && (chan)) - { - if (ourTS >= TS) - { - /* Our channel is newer than theirs. Evil deeds must be afoot. */ - this->Instance->SendMode((const char**)mode_users,modectr,who); - /* Yet again, we can't actually get a true value here, if everything else - * is working as it should. - */ - if (ourTS > TS) - { - Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS); - chan->age = TS; - ourTS = TS; - } - } - - /* Free anything we have left to free */ - for (unsigned int f = 2; f < modectr; f++) - free(mode_users[f]); - } - - /* if we newly created the channel, set it's TS properly. */ - if (created) - { - /* find created channel .. */ - chan = this->Instance->FindChan(channel); - if (chan) - /* w00t said this shouldnt be needed but it is. - * This isnt strictly true, as chan can be NULL - * if a nick collision has occured and therefore - * the channel was never created. - */ - chan->age = TS; - } - - /* All done. That wasnt so bad was it, you can wipe - * the sweat from your forehead now. :-) - */ - return true; - } - - /** NICK command */ - bool IntroduceClient(const std::string &source, std::deque ¶ms) - { - if (params.size() < 8) - return true; - if (params.size() > 8) - { - this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)"); - return true; - } - // NICK age nick host dhost ident +modes ip :gecos - // 0 1 2 3 4 5 6 7 - time_t age = atoi(params[0].c_str()); - - const char* tempnick = params[1].c_str(); - Instance->Log(DEBUG,"New remote client %s",tempnick); - - user_hash::iterator iter = this->Instance->clientlist->find(tempnick); - - if (iter != this->Instance->clientlist->end()) - { - // nick collision - this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision"); - userrec::QuitUser(this->Instance, iter->second, "Nickname collision"); - return true; - } - - userrec* _new = new userrec(this->Instance); - (*(this->Instance->clientlist))[tempnick] = _new; - _new->SetFd(FD_MAGIC_NUMBER); - strlcpy(_new->nick, tempnick,NICKMAX-1); - strlcpy(_new->host, params[2].c_str(),63); - strlcpy(_new->dhost, params[3].c_str(),63); - _new->server = this->Instance->FindServerNamePtr(source.c_str()); - strlcpy(_new->ident, params[4].c_str(),IDENTMAX); - strlcpy(_new->fullname, params[7].c_str(),MAXGECOS); - _new->registered = REG_ALL; - _new->signon = age; - - /* - * we need to remove the + from the modestring, so we can do our stuff - */ - std::string::size_type pos_after_plus = params[5].find_first_not_of('+'); - if (pos_after_plus != std::string::npos) - params[5] = params[5].substr(pos_after_plus); - - - for (std::string::iterator v = params[5].begin(); v != params[5].end(); v++) - { - _new->modes[(*v)-65] = 1; - /* For each mode thats set, increase counter */ - ModeHandler* mh = Instance->Modes->FindMode(*v, MODETYPE_USER); - if (mh) - mh->ChangeCount(1); - } - - /* now we've done with modes processing, put the + back for remote servers */ - params[5] = "+" + params[5]; - -#ifdef SUPPORT_IP6LINKS - if (params[6].find_first_of(":") != std::string::npos) - _new->SetSockAddr(AF_INET6, params[6].c_str(), 0); - else -#endif - _new->SetSockAddr(AF_INET, params[6].c_str(), 0); - - Instance->AddGlobalClone(_new); - - this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString()); - - params[7] = ":" + params[7]; - Utils->DoOneToAllButSender(source,"NICK", params, source); - - // Increment the Source Servers User Count.. - TreeServer* SourceServer = Utils->FindServer(source); - if (SourceServer) - { - SourceServer->AddUserCount(); - } - - FOREACH_MOD_I(Instance,I_OnPostConnect,OnPostConnect(_new)); - - return true; - } - - /** 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, chanrec* c) - { - std::string buffer; - char list[MAXBUF]; - std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age); - - size_t dlen, curlen; - dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age); - int numusers = 0; - char* ptr = list + dlen; - - CUList *ulist = c->GetUsers(); - std::string modes = ""; - std::string params = ""; - - for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) - { - // The first parameter gets a : before it - size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->second), i->second->nick); - - curlen += ptrlen; - ptr += ptrlen; - - numusers++; - - if (curlen > (480-NICKMAX)) - { - buffer.append(list).append("\r\n"); - - dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age); - ptr = list + dlen; - ptrlen = 0; - numusers = 0; - } - } - - if (numusers) - buffer.append(list).append("\r\n"); - - /* Sorry for the hax. Because newly created channels assume +nt, - * if this channel doesnt have +nt, explicitly send -n and -t for the missing modes. - */ - bool inverted = false; - if (!c->IsModeSet('n')) - { - modes.append("-n"); - inverted = true; - } - if (!c->IsModeSet('t')) - { - modes.append("-t"); - inverted = true; - } - if (inverted) - { - modes.append("+"); - } - - for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++) - { - modes.append("b"); - params.append(" ").append(b->data); - - if (params.length() >= MAXMODES) - { - /* Wrap at MAXMODES */ - buffer.append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params).append("\r\n"); - modes = ""; - params = ""; - } - } - - buffer.append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(c->ChanModes(true)); - - /* Only send these if there are any */ - if (!modes.empty()) - buffer.append("\r\n").append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params); - - this->WriteLine(buffer); - } - - /** Send G, Q, Z and E lines */ - void SendXLines(TreeServer* Current) - { - char data[MAXBUF]; - std::string buffer; - std::string n = this->Instance->Config->ServerName; - const char* sn = n.c_str(); - - /* Yes, these arent too nice looking, but they get the job done */ - for (std::vector::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++) - { - snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); - buffer.append(data); - } - for (std::vector::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++) - { - snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); - buffer.append(data); - } - for (std::vector::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++) - { - snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); - buffer.append(data); - } - for (std::vector::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++) - { - snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); - buffer.append(data); - } - for (std::vector::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++) - { - snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); - buffer.append(data); - } - for (std::vector::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++) - { - snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); - buffer.append(data); - } - for (std::vector::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++) - { - snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); - buffer.append(data); - } - for (std::vector::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++) - { - snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); - buffer.append(data); - } - - if (!buffer.empty()) - this->WriteLine(buffer); - } - - /** Send channel modes and topics */ - void SendChannelModes(TreeServer* Current) - { - char data[MAXBUF]; - std::deque list; - std::string n = this->Instance->Config->ServerName; - const char* sn = n.c_str(); - for (chan_hash::iterator c = this->Instance->chanlist->begin(); c != this->Instance->chanlist->end(); c++) - { - SendFJoins(Current, c->second); - if (*c->second->topic) - { - snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic); - this->WriteLine(data); - } - FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)Utils->Creator,(void*)this)); - list.clear(); - c->second->GetExtList(list); - for (unsigned int j = 0; j < list.size(); j++) - { - FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)Utils->Creator,(void*)this,list[j])); - } - } - } - - /** send all users and their oper state/modes */ - void SendUsers(TreeServer* Current) - { - char data[MAXBUF]; - std::deque list; - std::string dataline; - for (user_hash::iterator u = this->Instance->clientlist->begin(); u != this->Instance->clientlist->end(); u++) - { - if (u->second->registered == REG_ALL) - { - snprintf(data,MAXBUF,":%s NICK %lu %s %s %s %s +%s %s :%s",u->second->server,(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->FormatModes(),u->second->GetIPString(),u->second->fullname); - this->WriteLine(data); - if (*u->second->oper) - { - snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->nick, u->second->oper); - this->WriteLine(data); - } - if (*u->second->awaymsg) - { - snprintf(data,MAXBUF,":%s AWAY :%s", u->second->nick, u->second->awaymsg); - this->WriteLine(data); - } - FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)Utils->Creator,(void*)this)); - list.clear(); - u->second->GetExtList(list); - for (unsigned int j = 0; j < list.size(); j++) - { - FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)Utils->Creator,(void*)this,list[j])); - } - } - } - } - - /** 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 - * users require their servers to exist, and channels require their - * users to exist. You get the idea. - */ - void DoBurst(TreeServer* s) - { - std::string burst = "BURST "+ConvToStr(Instance->Time(true)); - std::string endburst = "ENDBURST"; - // Because by the end of the netburst, it could be gone! - std::string name = s->GetName(); - this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2"+name+"\2."); - this->WriteLine(burst); - /* send our version string */ - this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" VERSION :"+this->Instance->GetVersionString()); - /* Send server tree */ - this->SendServers(Utils->TreeRoot,s,1); - /* Send users and their oper status */ - this->SendUsers(s); - /* Send everything else (channel modes, xlines etc) */ - this->SendChannelModes(s); - this->SendXLines(s); - FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)Utils->Creator,(void*)this)); - this->WriteLine(endburst); - this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2."); - } - - /** 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 InspSocket::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. - */ - virtual bool OnDataReady() - { - char* data = this->Read(); - /* Check that the data read is a valid pointer and it has some content */ - if (data && *data) - { - this->in_buffer.append(data); - /* While there is at least one new line in the buffer, - * do something useful (we hope!) with it. - */ - while (in_buffer.find("\n") != std::string::npos) - { - std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1); - in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n")); - /* Use rfind here not find, as theres more - * chance of the \r being near the end of the - * string, not the start. - */ - if (ret.find("\r") != std::string::npos) - ret = in_buffer.substr(0,in_buffer.find("\r")-1); - /* Process this one, abort if it - * didnt return true. - */ - if (!this->ProcessLine(ret)) - { - return false; - } - } - return true; - } - /* EAGAIN returns an empty but non-NULL string, so this - * evaluates to TRUE for EAGAIN but to FALSE for EOF. - */ - return (data && !*data); - } - - int WriteLine(std::string line) - { - Instance->Log(DEBUG, "-> %s", line.c_str()); - line.append("\r\n"); - return this->Write(line); - } - - /* Handle ERROR command */ - bool Error(std::deque ¶ms) - { - if (params.size() < 1) - return false; - this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str()); - /* we will return false to cause the socket to close. */ - return false; - } - - /** remote MOTD. leet, huh? */ - bool Motd(const std::string &prefix, std::deque ¶ms) - { - if (params.size() > 0) - { - if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0])) - { - /* It's for our server */ - string_list results; - userrec* source = this->Instance->FindNick(prefix); - - if (source) - { - std::deque par; - par.push_back(prefix); - par.push_back(""); - - if (!Instance->Config->MOTD.size()) - { - par[1] = std::string("::")+Instance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing."; - Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); - return true; - } - - par[1] = std::string("::")+Instance->Config->ServerName+" 375 "+source->nick+" :"+Instance->Config->ServerName+" message of the day"; - Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); - - for (unsigned int i = 0; i < Instance->Config->MOTD.size(); i++) - { - par[1] = std::string("::")+Instance->Config->ServerName+" 372 "+source->nick+" :- "+Instance->Config->MOTD[i]; - Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); - } - - par[1] = std::string("::")+Instance->Config->ServerName+" 376 "+source->nick+" End of message of the day."; - Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); - } - } - else - { - /* Pass it on */ - userrec* source = this->Instance->FindNick(prefix); - if (source) - Utils->DoOneToOne(prefix, "MOTD", params, params[0]); - } - } - return true; - } - - /** remote ADMIN. leet, huh? */ - bool Admin(const std::string &prefix, std::deque ¶ms) - { - if (params.size() > 0) - { - if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0])) - { - /* It's for our server */ - string_list results; - userrec* source = this->Instance->FindNick(prefix); - - if (source) - { - std::deque par; - par.push_back(prefix); - par.push_back(""); - - par[1] = std::string("::")+Instance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+Instance->Config->ServerName; - Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); - - par[1] = std::string("::")+Instance->Config->ServerName+" 257 "+source->nick+" :Name - "+Instance->Config->AdminName; - Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); - - par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+Instance->Config->AdminNick; - Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); - - par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+Instance->Config->AdminEmail; - Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); - } - } - else - { - /* Pass it on */ - userrec* source = this->Instance->FindNick(prefix); - if (source) - Utils->DoOneToOne(prefix, "ADMIN", params, params[0]); - } - } - return true; - } - - bool Stats(const std::string &prefix, std::deque ¶ms) - { - /* Get the reply to a STATS query if it matches this servername, - * and send it back as a load of PUSH queries - */ - if (params.size() > 1) - { - if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1])) - { - /* It's for our server */ - string_list results; - userrec* source = this->Instance->FindNick(prefix); - if (source) - { - std::deque par; - par.push_back(prefix); - par.push_back(""); - DoStats(this->Instance, *(params[0].c_str()), source, results); - for (size_t i = 0; i < results.size(); i++) - { - par[1] = "::" + results[i]; - Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); - } - } - } - else - { - /* Pass it on */ - userrec* source = this->Instance->FindNick(prefix); - if (source) - Utils->DoOneToOne(prefix, "STATS", params, params[1]); - } - } - return true; - } - - - /** 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) - { - if (params.size() != 1) - return true; - std::string opertype = params[0]; - userrec* u = this->Instance->FindNick(prefix); - if (u) - { - u->modes[UM_OPERATOR] = 1; - this->Instance->all_opers.push_back(u); - strlcpy(u->oper,opertype.c_str(),NICKMAX-1); - Utils->DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server); - this->Instance->SNO->WriteToSnoMask('o',"From %s: User %s (%s@%s) is now an IRC operator of type %s",u->server, u->nick,u->ident,u->host,irc::Spacify(opertype.c_str())); - - } - return true; - } - - /** 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) - { - if (params.size() < 3) - return true; - - userrec* u = this->Instance->FindNick(params[0]); - - if (u) - { - Utils->DoOneToAllButSender(prefix,"SVSNICK",params,prefix); - if (IS_LOCAL(u)) - { - std::deque par; - par.push_back(params[1]); - /* This is not required as one is sent in OnUserPostNick below - */ - //Utils->DoOneToMany(u->nick,"NICK",par); - if (!u->ForceNickChange(params[1].c_str())) - { - userrec::QuitUser(this->Instance, u, "Nickname collision"); - return true; - } - u->age = atoi(params[2].c_str()); - } - } - return true; - } - - /* - * Remote SQUIT (RSQUIT). Routing works similar to SVSNICK: Route it to the server that the target is connected to locally, - * then let that server do the dirty work (squit it!). Example: - * A -> B -> C -> D: oper on A squits D, A routes to B, B routes to C, C notices D connected locally, kills it. -- w00t - */ - bool RemoteSquit(const std::string &prefix, std::deque ¶ms) - { - /* ok.. :w00t RSQUIT jupe.barafranca.com :reason here */ - if (params.size() < 2) - return true; - - TreeServer* s = Utils->FindServerMask(params[0]); - - if (s) - { - if (s == Utils->TreeRoot) - { - this->Instance->SNO->WriteToSnoMask('l',"What the fuck, I recieved a remote SQUIT for myself? :< (from %s", prefix.c_str()); - return true; - } - - TreeSocket* sock = s->GetSocket(); - - if (sock) - { - /* it's locally connected, KILL IT! */ - Instance->SNO->WriteToSnoMask('l',"RSQUIT: Server \002%s\002 removed from network by %s: %s", params[0].c_str(), prefix.c_str(), params[1].c_str()); - sock->Squit(s,"Server quit by " + prefix + ": " + params[1]); - Instance->SE->DelFd(sock); - sock->Close(); - delete sock; - } - else - { - /* route the rsquit */ - params[1] = ":" + params[1]; - Utils->DoOneToOne(prefix, "RSQUIT", params, params[0]); - } - } - else - { - /* mother fucker! it doesn't exist */ - } - - return true; - } - - bool ServiceJoin(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 2) - return true; - - userrec* u = this->Instance->FindNick(params[0]); - - if (u) - { - /* only join if it's local, otherwise just pass it on! */ - if (IS_LOCAL(u)) - chanrec::JoinUser(this->Instance, u, params[1].c_str(), false); - Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix); - } - return true; - } - - bool RemoteRehash(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 1) - return false; - - std::string servermask = params[0]; - - if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask)) - { - this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated by \002"+prefix+"\002."); - this->Instance->RehashServer(); - Utils->ReadConfiguration(false); - InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance); - } - Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix); - return true; - } - - bool RemoteKill(const std::string &prefix, std::deque ¶ms) - { - if (params.size() != 2) - return true; - - std::string nick = params[0]; - userrec* u = this->Instance->FindNick(prefix); - userrec* who = this->Instance->FindNick(nick); - - if (who) - { - /* Prepend kill source, if we don't have one */ - std::string sourceserv = prefix; - if (u) - { - sourceserv = u->server; - } - if (*(params[1].c_str()) != '[') - { - params[1] = "[" + sourceserv + "] Killed (" + params[1] +")"; - } - std::string reason = params[1]; - params[1] = ":" + params[1]; - Utils->DoOneToAllButSender(prefix,"KILL",params,sourceserv); - who->Write(":%s KILL %s :%s (%s)", sourceserv.c_str(), who->nick, sourceserv.c_str(), reason.c_str()); - userrec::QuitUser(this->Instance,who,reason); - } - return true; - } - - bool LocalPong(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 1) - return true; - - if (params.size() == 1) - { - TreeServer* ServerSource = Utils->FindServer(prefix); - if (ServerSource) - { - ServerSource->SetPingFlag(); - } - } - else - { - std::string forwardto = params[1]; - if (forwardto == this->Instance->Config->ServerName) - { - /* - * this is a PONG for us - * if the prefix is a user, check theyre local, and if they are, - * dump the PONG reply back to their fd. If its a server, do nowt. - * Services might want to send these s->s, but we dont need to yet. - */ - userrec* u = this->Instance->FindNick(prefix); - - if (u) - { - u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str()); - } - } - else - { - // not for us, pass it on :) - Utils->DoOneToOne(prefix,"PONG",params,forwardto); - } - } - - return true; - } - - bool MetaData(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 3) - return true; - - TreeServer* ServerSource = Utils->FindServer(prefix); - - if (ServerSource) - { - if (params[0] == "*") - { - FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2])); - } - else if (*(params[0].c_str()) == '#') - { - chanrec* c = this->Instance->FindChan(params[0]); - if (c) - { - FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2])); - } - } - else if (*(params[0].c_str()) != '#') - { - userrec* u = this->Instance->FindNick(params[0]); - if (u) - { - FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2])); - } - } - } - - params[2] = ":" + params[2]; - Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix); - return true; - } - - bool ServerVersion(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 1) - return true; - - TreeServer* ServerSource = Utils->FindServer(prefix); - - if (ServerSource) - { - ServerSource->SetVersion(params[0]); - } - params[0] = ":" + params[0]; - Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix); - return true; - } - - bool ChangeHost(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 1) - return true; - - userrec* u = this->Instance->FindNick(prefix); - - if (u) - { - u->ChangeDisplayedHost(params[0].c_str()); - Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server); - } - return true; - } - - bool AddLine(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 6) - return true; - - bool propogate = false; - - if (!this->bursting) - Utils->lines_to_apply = 0; - - switch (*(params[0].c_str())) - { - case 'Z': - propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); - Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str())); - if (propogate) - Utils->lines_to_apply |= APPLY_ZLINES; - break; - case 'Q': - propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); - Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str())); - if (propogate) - Utils->lines_to_apply |= APPLY_QLINES; - break; - case 'E': - propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); - Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str())); - break; - case 'G': - propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); - Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str())); - if (propogate) - Utils->lines_to_apply |= APPLY_GLINES; - break; - case 'K': - propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); - if (propogate) - Utils->lines_to_apply |= APPLY_KLINES; - break; - default: - /* Just in case... */ - this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!"); - propogate = false; - break; - } - - /* Send it on its way */ - if (propogate) - { - if (atoi(params[4].c_str())) - { - this->Instance->SNO->WriteToSnoMask('x',"%s Added %cLINE on %s to expire in %lu seconds (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),atoi(params[4].c_str()),params[5].c_str()); - } - else - { - this->Instance->SNO->WriteToSnoMask('x',"%s Added permenant %cLINE on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),params[5].c_str()); - } - params[5] = ":" + params[5]; - Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix); - } - if (!this->bursting) - { - Instance->XLines->apply_lines(Utils->lines_to_apply); - Utils->lines_to_apply = 0; - } - return true; - } - - bool ChangeName(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 1) - return true; - - userrec* u = this->Instance->FindNick(prefix); - - if (u) - { - u->ChangeName(params[0].c_str()); - params[0] = ":" + params[0]; - Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server); - } - return true; - } - - bool Whois(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 1) - return true; - - userrec* u = this->Instance->FindNick(prefix); - if (u) - { - // an incoming request - if (params.size() == 1) - { - userrec* x = this->Instance->FindNick(params[0]); - if ((x) && (IS_LOCAL(x))) - { - userrec* x = this->Instance->FindNick(params[0]); - char signon[MAXBUF]; - char idle[MAXBUF]; - - snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon); - snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-Instance->Time(true))); - std::deque par; - par.push_back(prefix); - par.push_back(signon); - par.push_back(idle); - // ours, we're done, pass it BACK - Utils->DoOneToOne(params[0],"IDLE",par,u->server); - } - else - { - // not ours pass it on - Utils->DoOneToOne(prefix,"IDLE",params,x->server); - } - } - else if (params.size() == 3) - { - std::string who_did_the_whois = params[0]; - userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois); - if ((who_to_send_to) && (IS_LOCAL(who_to_send_to))) - { - // an incoming reply to a whois we sent out - std::string nick_whoised = prefix; - unsigned long signon = atoi(params[1].c_str()); - unsigned long idle = atoi(params[2].c_str()); - if ((who_to_send_to) && (IS_LOCAL(who_to_send_to))) - do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str()); - } - else - { - // not ours, pass it on - Utils->DoOneToOne(prefix,"IDLE",params,who_to_send_to->server); - } - } - } - return true; - } - - bool Push(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 2) - return true; - - userrec* u = this->Instance->FindNick(params[0]); - - if (!u) - return true; - - if (IS_LOCAL(u)) - { - u->Write(params[1]); - } - else - { - // continue the raw onwards - params[1] = ":" + params[1]; - Utils->DoOneToOne(prefix,"PUSH",params,u->server); - } - return true; - } - - bool HandleSetTime(const std::string &prefix, std::deque ¶ms) - { - if (!params.size() || !Utils->EnableTimeSync) - return true; - - bool force = false; - - if ((params.size() == 2) && (params[1] == "FORCE")) - force = true; - - time_t rts = atoi(params[0].c_str()); - time_t us = Instance->Time(true); - - if (rts == us) - { - Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix); - } - else if (force || (rts < us)) - { - int old = Instance->SetTimeDelta(rts - us); - Instance->Log(DEBUG, "%s TS (diff %d) from %s applied (old delta was %d)", (force) ? "Forced" : "Lower", rts - us, prefix.c_str(), old); - - Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix); - } - else - { - Instance->Log(DEBUG, "Higher TS (diff %d) from %s overridden", us - rts, prefix.c_str()); - - std::deque oparams; - oparams.push_back(ConvToStr(us)); - - Utils->DoOneToMany(prefix, "TIMESET", oparams); - } - - return true; - } - - bool Time(const std::string &prefix, std::deque ¶ms) - { - // :source.server TIME remote.server sendernick - // :remote.server TIME source.server sendernick TS - if (params.size() == 2) - { - // someone querying our time? - if (this->Instance->Config->ServerName == params[0]) - { - userrec* u = this->Instance->FindNick(params[1]); - if (u) - { - params.push_back(ConvToStr(Instance->Time(false))); - params[0] = prefix; - Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]); - } - } - else - { - // not us, pass it on - userrec* u = this->Instance->FindNick(params[1]); - if (u) - Utils->DoOneToOne(prefix,"TIME",params,params[0]); - } - } - else if (params.size() == 3) - { - // a response to a previous TIME - userrec* u = this->Instance->FindNick(params[1]); - if ((u) && (IS_LOCAL(u))) - { - time_t rawtime = atol(params[2].c_str()); - struct tm * timeinfo; - timeinfo = localtime(&rawtime); - char tms[26]; - snprintf(tms,26,"%s",asctime(timeinfo)); - tms[24] = 0; - u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms); - } - else - { - if (u) - Utils->DoOneToOne(prefix,"TIME",params,u->server); - } - } - return true; - } - - bool LocalPing(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 1) - return true; - - if (params.size() == 1) - { - std::string stufftobounce = params[0]; - this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce); - return true; - } - else - { - std::string forwardto = params[1]; - if (forwardto == this->Instance->Config->ServerName) - { - // this is a ping for us, send back PONG to the requesting server - params[1] = params[0]; - params[0] = forwardto; - Utils->DoOneToOne(forwardto,"PONG",params,params[1]); - } - else - { - // not for us, pass it on :) - Utils->DoOneToOne(prefix,"PING",params,forwardto); - } - return true; - } - } - - bool RemoveStatus(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 1) - return true; - - chanrec* c = Instance->FindChan(params[0]); - - if (c) - { - irc::modestacker modestack(false); - CUList *ulist = c->GetUsers(); - const char* y[127]; - std::deque stackresult; - std::string x; - - for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) - { - std::string modesequence = Instance->Modes->ModeString(i->second, c); - if (modesequence.length()) - { - irc::spacesepstream sep(modesequence); - std::string modeletters = sep.GetToken(); - - while (!modeletters.empty()) - { - char mletter = *(modeletters.begin()); - modestack.Push(mletter,sep.GetToken()); - modeletters.erase(modeletters.begin()); - } - } - } - - while (modestack.GetStackedLine(stackresult)) - { - stackresult.push_front(ConvToStr(c->age)); - stackresult.push_front(c->name); - Utils->DoOneToMany(Instance->Config->ServerName, "FMODE", stackresult); - stackresult.erase(stackresult.begin() + 1); - for (size_t z = 0; z < stackresult.size(); z++) - { - y[z] = stackresult[z].c_str(); - } - userrec* n = new userrec(Instance); - n->SetFd(FD_MAGIC_NUMBER); - Instance->SendMode(y, stackresult.size(), n); - delete n; - } - } - return true; - } - - bool RemoteServer(const std::string &prefix, std::deque ¶ms) - { - if (params.size() < 4) - return false; - - std::string servername = params[0]; - std::string password = params[1]; - // hopcount is not used for a remote server, we calculate this ourselves - std::string description = params[3]; - TreeServer* ParentOfThis = Utils->FindServer(prefix); - - if (!ParentOfThis) - { - this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix); - return false; - } - TreeServer* CheckDupe = Utils->FindServer(servername); - if (CheckDupe) - { - this->WriteLine("ERROR :Server "+servername+" already exists!"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists"); - return false; - } - TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL); - ParentOfThis->AddChild(Node); - params[3] = ":" + params[3]; - Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix); - this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")"); - return true; - } - - bool Outbound_Reply_Server(std::deque ¶ms) - { - if (params.size() < 4) - return false; - - irc::string servername = params[0].c_str(); - std::string sname = params[0]; - std::string password = params[1]; - int hops = atoi(params[2].c_str()); - - if (hops) - { - this->WriteLine("ERROR :Server too far away for authentication"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication"); - return false; - } - std::string description = params[3]; - for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) - { - if ((x->Name == servername) && (x->RecvPass == password)) - { - TreeServer* CheckDupe = Utils->FindServer(sname); - if (CheckDupe) - { - this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName()); - return false; - } - // Begin the sync here. this kickstarts the - // other side, waiting in WAIT_AUTH_2 state, - // into starting their burst, as it shows - // that we're happy. - this->LinkState = CONNECTED; - // we should add the details of this server now - // to the servers tree, as a child of the root - // node. - TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this); - Utils->TreeRoot->AddChild(Node); - params[3] = ":" + params[3]; - Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname); - this->bursting = true; - this->DoBurst(Node); - return true; - } - } - this->WriteLine("ERROR :Invalid credentials"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials"); - return false; - } - - bool Inbound_Server(std::deque ¶ms) - { - if (params.size() < 4) - return false; - - irc::string servername = params[0].c_str(); - std::string sname = params[0]; - std::string password = params[1]; - int hops = atoi(params[2].c_str()); - - if (hops) - { - this->WriteLine("ERROR :Server too far away for authentication"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication"); - return false; - } - std::string description = params[3]; - for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) - { - if ((x->Name == servername) && (x->RecvPass == password)) - { - TreeServer* CheckDupe = Utils->FindServer(sname); - if (CheckDupe) - { - this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName()); - return false; - } - this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "" : this->GetIP())+"] ("+description+")"); - - if (this->Hook) - { - std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send(); - this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "" : this->GetIP())+"] using transport \2"+name+"\2"); - } - - this->InboundServerName = sname; - this->InboundDescription = description; - // this is good. Send our details: Our server name and description and hopcount of 0, - // along with the sendpass from this block. - this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc); - // move to the next state, we are now waiting for THEM. - this->LinkState = WAIT_AUTH_2; - return true; - } - } - this->WriteLine("ERROR :Invalid credentials"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials"); - return false; - } - - void Split(const std::string &line, std::deque &n) - { - n.clear(); - irc::tokenstream tokens(line); - std::string param; - while ((param = tokens.GetToken()) != "") - n.push_back(param); - return; - } - - bool ProcessLine(std::string &line) - { - std::deque params; - irc::string command; - std::string prefix; - - line = line.substr(0, line.find_first_of("\r\n")); - - if (line.empty()) - return true; - - Instance->Log(DEBUG, "<- %s", line.c_str()); - - this->Split(line.c_str(),params); - - if ((params[0][0] == ':') && (params.size() > 1)) - { - prefix = params[0].substr(1); - params.pop_front(); - } - - command = params[0].c_str(); - params.pop_front(); - - switch (this->LinkState) - { - TreeServer* Node; - - case WAIT_AUTH_1: - // Waiting for SERVER command from remote server. Server initiating - // the connection sends the first SERVER command, listening server - // replies with theirs if its happy, then if the initiator is happy, - // it starts to send its net sync, which starts the merge, otherwise - // it sends an ERROR. - if (command == "PASS") - { - /* Silently ignored */ - } - else if (command == "SERVER") - { - return this->Inbound_Server(params); - } - else if (command == "ERROR") - { - return this->Error(params); - } - else if (command == "USER") - { - this->WriteLine("ERROR :Client connections to this port are prohibited."); - return false; - } - else if (command == "CAPAB") - { - return this->Capab(params); - } - else if ((command == "U") || (command == "S")) - { - this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!"); - return false; - } - else - { - std::string error("ERROR :Invalid command in negotiation phase: "); - error.append(command.c_str()); - this->WriteLine(error); - return false; - } - break; - case WAIT_AUTH_2: - // Waiting for start of other side's netmerge to say they liked our - // password. - if (command == "SERVER") - { - // cant do this, they sent it to us in the WAIT_AUTH_1 state! - // silently ignore. - return true; - } - else if ((command == "U") || (command == "S")) - { - this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!"); - return false; - } - else if (command == "BURST") - { - if (params.size() && Utils->EnableTimeSync) - { - /* If a time stamp is provided, apply synchronization */ - bool force = false; - time_t them = atoi(params[0].c_str()); - time_t us = Instance->Time(true); - int delta = them - us; - - if ((params.size() == 2) && (params[1] == "FORCE")) - force = true; - - if ((delta < -600) || (delta > 600)) - { - this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Your clocks are out by %d seconds (this is more than ten minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta)); - this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!"); - return false; - } - - if (force || (us > them)) - { - this->Instance->SetTimeDelta(them - us); - // Send this new timestamp to any other servers - Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params); - } - else - { - // Override the timestamp - this->WriteLine(":" + Utils->TreeRoot->GetName() + " TIMESET " + ConvToStr(us)); - } - } - this->LinkState = CONNECTED; - Node = new TreeServer(this->Utils,this->Instance,InboundServerName,InboundDescription,Utils->TreeRoot,this); - Utils->TreeRoot->AddChild(Node); - params.clear(); - params.push_back(InboundServerName); - params.push_back("*"); - params.push_back("1"); - params.push_back(":"+InboundDescription); - Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName); - this->bursting = true; - this->DoBurst(Node); - } - else if (command == "ERROR") - { - return this->Error(params); - } - else if (command == "CAPAB") - { - return this->Capab(params); - } - - break; - case LISTENER: - this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!"); - return false; - break; - case CONNECTING: - if (command == "SERVER") - { - // another server we connected to, which was in WAIT_AUTH_1 state, - // has just sent us their credentials. If we get this far, theyre - // happy with OUR credentials, and they are now in WAIT_AUTH_2 state. - // if we're happy with this, we should send our netburst which - // kickstarts the merge. - return this->Outbound_Reply_Server(params); - } - else if (command == "ERROR") - { - return this->Error(params); - } - break; - case CONNECTED: - // This is the 'authenticated' state, when all passwords - // have been exchanged and anything past this point is taken - // as gospel. - - if (prefix != "") - { - std::string direction = prefix; - userrec* t = this->Instance->FindNick(prefix); - if (t) - { - direction = t->server; - } - TreeServer* route_back_again = Utils->BestRouteTo(direction); - if ((!route_back_again) || (route_back_again->GetSocket() != this)) - { - if (route_back_again) - Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str()); - return true; - } - - /* Fix by brain: - * When there is activity on the socket, reset the ping counter so - * that we're not wasting bandwidth pinging an active server. - */ - route_back_again->SetNextPingTime(time(NULL) + 60); - route_back_again->SetPingFlag(); - } - - if (command == "SVSMODE") - { - /* Services expects us to implement - * SVSMODE. In inspircd its the same as - * MODE anyway. - */ - command = "MODE"; - } - std::string target = ""; - /* Yes, know, this is a mess. Its reasonably fast though as we're - * working with std::string here. - */ - if ((command == "NICK") && (params.size() > 1)) - { - return this->IntroduceClient(prefix,params); - } - else if (command == "FJOIN") - { - return this->ForceJoin(prefix,params); - } - else if (command == "STATS") - { - return this->Stats(prefix, params); - } - else if (command == "MOTD") - { - return this->Motd(prefix, params); - } - else if (command == "ADMIN") - { - return this->Admin(prefix, params); - } - else if (command == "SERVER") - { - return this->RemoteServer(prefix,params); - } - else if (command == "ERROR") - { - return this->Error(params); - } - else if (command == "OPERTYPE") - { - return this->OperType(prefix,params); - } - else if (command == "FMODE") - { - return this->ForceMode(prefix,params); - } - else if (command == "KILL") - { - return this->RemoteKill(prefix,params); - } - else if (command == "FTOPIC") - { - return this->ForceTopic(prefix,params); - } - else if (command == "REHASH") - { - return this->RemoteRehash(prefix,params); - } - else if (command == "METADATA") - { - return this->MetaData(prefix,params); - } - else if (command == "REMSTATUS") - { - return this->RemoveStatus(prefix,params); - } - else if (command == "PING") - { - /* - * We just got a ping from a server that's bursting. - * This can't be right, so set them to not bursting, and - * apply their lines. - */ - if (this->bursting) - { - this->bursting = false; - Instance->XLines->apply_lines(Utils->lines_to_apply); - Utils->lines_to_apply = 0; - } - if (prefix == "") - { - prefix = this->GetName(); - } - return this->LocalPing(prefix,params); - } - else if (command == "PONG") - { - /* - * We just got a pong from a server that's bursting. - * This can't be right, so set them to not bursting, and - * apply their lines. - */ - if (this->bursting) - { - this->bursting = false; - Instance->XLines->apply_lines(Utils->lines_to_apply); - Utils->lines_to_apply = 0; - } - if (prefix == "") - { - prefix = this->GetName(); - } - return this->LocalPong(prefix,params); - } - else if (command == "VERSION") - { - return this->ServerVersion(prefix,params); - } - else if (command == "FHOST") - { - return this->ChangeHost(prefix,params); - } - else if (command == "FNAME") - { - return this->ChangeName(prefix,params); - } - else if (command == "ADDLINE") - { - return this->AddLine(prefix,params); - } - else if (command == "SVSNICK") - { - if (prefix == "") - { - prefix = this->GetName(); - } - return this->ForceNick(prefix,params); - } - else if (command == "RSQUIT") - { - return this->RemoteSquit(prefix, params); - } - else if (command == "IDLE") - { - return this->Whois(prefix,params); - } - else if (command == "PUSH") - { - return this->Push(prefix,params); - } - else if (command == "TIMESET") - { - return this->HandleSetTime(prefix, params); - } - else if (command == "TIME") - { - return this->Time(prefix,params); - } - else if ((command == "KICK") && (Utils->IsServer(prefix))) - { - std::string sourceserv = this->myhost; - if (params.size() == 3) - { - userrec* user = this->Instance->FindNick(params[1]); - chanrec* chan = this->Instance->FindChan(params[0]); - if (user && chan) - { - if (!chan->ServerKickUser(user, params[2].c_str(), false)) - /* Yikes, the channels gone! */ - delete chan; - } - } - if (this->InboundServerName != "") - { - sourceserv = this->InboundServerName; - } - return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params); - } - else if (command == "SVSJOIN") - { - if (prefix == "") - { - prefix = this->GetName(); - } - return this->ServiceJoin(prefix,params); - } - else if (command == "SQUIT") - { - if (params.size() == 2) - { - this->Squit(Utils->FindServer(params[0]),params[1]); - } - return true; - } - else if (command == "OPERNOTICE") - { - std::string sourceserv = this->myhost; - - if (this->InboundServerName != "") - sourceserv = this->InboundServerName; - - if (params.size() >= 1) - Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]); - - return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params); - } - else if (command == "MODENOTICE") - { - std::string sourceserv = this->myhost; - if (this->InboundServerName != "") - sourceserv = this->InboundServerName; - if (params.size() >= 2) - { - Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str()); - } - - return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params); - } - else if (command == "SNONOTICE") - { - std::string sourceserv = this->myhost; - if (this->InboundServerName != "") - sourceserv = this->InboundServerName; - if (params.size() >= 2) - { - Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]); - } - - return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params); - } - else if (command == "ENDBURST") - { - this->bursting = false; - Instance->XLines->apply_lines(Utils->lines_to_apply); - Utils->lines_to_apply = 0; - std::string sourceserv = this->myhost; - if (this->InboundServerName != "") - { - sourceserv = this->InboundServerName; - } - this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str()); - - Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server"); - rmode.Send(Instance); - - return true; - } - else - { - // not a special inter-server command. - // Emulate the actual user doing the command, - // this saves us having a huge ugly parser. - userrec* who = this->Instance->FindNick(prefix); - std::string sourceserv = this->myhost; - if (this->InboundServerName != "") - { - sourceserv = this->InboundServerName; - } - if ((!who) && (command == "MODE")) - { - if (Utils->IsServer(prefix)) - { - const char* modelist[127]; - for (size_t i = 0; i < params.size(); i++) - modelist[i] = params[i].c_str(); - - userrec* fake = new userrec(Instance); - fake->SetFd(FD_MAGIC_NUMBER); - - this->Instance->SendMode(modelist, params.size(), fake); - - delete fake; - - /* Hot potato! pass it on! */ - return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params); - } - } - if (who) - { - if ((command == "NICK") && (params.size() > 0)) - { - /* On nick messages, check that the nick doesnt - * already exist here. If it does, kill their copy, - * and our copy. - */ - userrec* x = this->Instance->FindNick(params[0]); - if ((x) && (x != who)) - { - std::deque p; - p.push_back(params[0]); - p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")"); - Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p); - p.clear(); - p.push_back(prefix); - p.push_back("Nickname collision"); - Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p); - userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")"); - userrec* y = this->Instance->FindNick(prefix); - if (y) - { - userrec::QuitUser(this->Instance,y,"Nickname collision"); - } - return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params); - } - } - // its a user - target = who->server; - const char* strparams[127]; - for (unsigned int q = 0; q < params.size(); q++) - { - strparams[q] = params[q].c_str(); - } - switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who)) - { - case CMD_INVALID: - this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules"); - return false; - break; - case CMD_FAILURE: - return true; - break; - default: - /* CMD_SUCCESS and CMD_USER_DELETED fall through here */ - break; - } - } - else - { - // its not a user. Its either a server, or somethings screwed up. - if (Utils->IsServer(prefix)) - target = this->Instance->Config->ServerName; - else - return true; - } - return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params); - - } - return true; - break; - } - return true; - } - - virtual std::string GetName() - { - std::string sourceserv = this->myhost; - if (this->InboundServerName != "") - { - sourceserv = this->InboundServerName; - } - return sourceserv; - } - - virtual void OnTimeout() - { - if (this->LinkState == CONNECTING) - { - this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out."); - Link* MyLink = Utils->FindLink(myhost); - if (MyLink) - Utils->DoFailOver(MyLink); - } - } - - virtual void OnClose() - { - // Connection closed. - // If the connection is fully up (state CONNECTED) - // then propogate a netsplit to all peers. - std::string quitserver = this->myhost; - if (this->InboundServerName != "") - { - quitserver = this->InboundServerName; - } - TreeServer* s = Utils->FindServer(quitserver); - if (s) - { - Squit(s,"Remote host closed the connection"); - } - - if (quitserver != "") - this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str()); - } - - virtual int OnIncomingConnection(int newsock, char* ip) - { - /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port, - * or discovering if this port is the server port, we don't allow connections from any - * IPs for which we don't have a link block. - */ - bool found = false; - - found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end()); - if (!found) - { - for (vector::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++) - if (irc::sockets::MatchCIDR(ip, (*i).c_str())) - found = true; - - if (!found) - { - this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip); - close(newsock); - return false; - } - } - - TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook); - - s = s; /* Whinge whinge whinge, thats all GCC ever does. */ - return true; - } -}; - -/** This class is used to resolve server hostnames during /connect and autoconnect. - * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this - * resolver step first ourselves if we need it. This is totally nonblocking, and will - * callback to OnLookupComplete or OnError when completed. Once it has completed we - * will have an IP address which we can then use to continue our connection. - */ -class ServernameResolver : public Resolver -{ - private: - /** A copy of the Link tag info for what we're connecting to. - * We take a copy, rather than using a pointer, just in case the - * admin takes the tag away and rehashes while the domain is resolving. - */ - Link MyLink; - SpanningTreeUtilities* Utils; - public: - ServernameResolver(Module* me, SpanningTreeUtilities* Util, InspIRCd* Instance, const std::string &hostname, Link x, bool &cached) : Resolver(Instance, hostname, DNS_QUERY_FORWARD, cached, me), MyLink(x), Utils(Util) - { - /* Nothing in here, folks */ - } - - void OnLookupComplete(const std::string &result, unsigned int ttl, bool cached) - { - /* Initiate the connection, now that we have an IP to use. - * Passing a hostname directly to InspSocket causes it to - * just bail and set its FD to -1. - */ - TreeServer* CheckDupe = Utils->FindServer(MyLink.Name.c_str()); - if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */ - { - - if ((!MyLink.Hook.empty()) && (Utils->hooks.find(MyLink.Hook.c_str()) == Utils->hooks.end())) - return; - - TreeSocket* newsocket = new TreeSocket(this->Utils, ServerInstance, result,MyLink.Port,false,MyLink.Timeout ? MyLink.Timeout : 10,MyLink.Name.c_str(), - MyLink.Hook.empty() ? NULL : Utils->hooks[MyLink.Hook.c_str()]); - if (newsocket->GetFd() > -1) - { - /* We're all OK */ - } - else - { - /* Something barfed, show the opers */ - ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno)); - delete newsocket; - Utils->DoFailOver(&MyLink); - } - } - } - - void OnError(ResolverError e, const std::string &errormessage) - { - /* Ooops! */ - ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str()); - Utils->DoFailOver(&MyLink); - } -}; - -/** Handle resolving of server IPs for the cache - */ -class SecurityIPResolver : public Resolver -{ - private: - Link MyLink; - SpanningTreeUtilities* Utils; - public: - SecurityIPResolver(Module* me, SpanningTreeUtilities* U, InspIRCd* Instance, const std::string &hostname, Link x, bool &cached) : Resolver(Instance, hostname, DNS_QUERY_FORWARD, cached, me), MyLink(x), Utils(U) - { - } - - void OnLookupComplete(const std::string &result, unsigned int ttl, bool cached) - { - Utils->ValidIPs.push_back(result); - } - - void OnError(ResolverError e, const std::string &errormessage) - { - ServerInstance->Log(DEFAULT,"Could not resolve IP associated with Link '%s': %s",MyLink.Name.c_str(),errormessage.c_str()); - } -}; - -SpanningTreeUtilities::SpanningTreeUtilities(InspIRCd* Instance, ModuleSpanningTree* C) : ServerInstance(Instance), Creator(C) -{ - Bindings.clear(); - - lines_to_apply = 0; - - this->TreeRoot = new TreeServer(this, ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc); - - modulelist* ml = ServerInstance->FindInterface("InspSocketHook"); - - /* Did we find any modules? */ - if (ml) - { - /* Yes, enumerate them all to find out the hook name */ - for (modulelist::iterator m = ml->begin(); m != ml->end(); m++) - { - /* Make a request to it for its name, its implementing - * InspSocketHook so we know its safe to do this - */ - std::string name = InspSocketNameRequest((Module*)Creator, *m).Send(); - /* Build a map of them */ - hooks[name.c_str()] = *m; - hooknames.push_back(name); - } - } - - this->ReadConfiguration(true); -} - -SpanningTreeUtilities::~SpanningTreeUtilities() -{ - for (unsigned int i = 0; i < Bindings.size(); i++) - { - ServerInstance->SE->DelFd(Bindings[i]); - Bindings[i]->Close(); - DELETE(Bindings[i]); - } - while (TreeRoot->ChildCount()) - { - TreeServer* child_server = TreeRoot->GetChild(0); - if (child_server) - { - TreeSocket* sock = child_server->GetSocket(); - ServerInstance->SE->DelFd(sock); - sock->Close(); - DELETE(sock); - } - } - delete TreeRoot; -} - -void SpanningTreeUtilities::AddThisServer(TreeServer* server, TreeServerList &list) -{ - if (list.find(server) == list.end()) - list[server] = server; -} - -/** returns a list of DIRECT servernames for a specific channel */ -void SpanningTreeUtilities::GetListOfServersForChannel(chanrec* c, TreeServerList &list, char status, const CUList &exempt_list) -{ - CUList *ulist; - switch (status) - { - case '@': - ulist = c->GetOppedUsers(); - break; - case '%': - ulist = c->GetHalfoppedUsers(); - break; - case '+': - ulist = c->GetVoicedUsers(); - break; - default: - ulist = c->GetUsers(); - break; - } - for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) - { - if ((i->second->GetFd() < 0) && (exempt_list.find(i->second) == exempt_list.end())) - { - TreeServer* best = this->BestRouteTo(i->second->server); - if (best) - AddThisServer(best,list); - } - } - return; -} - -bool SpanningTreeUtilities::DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, std::deque ¶ms) -{ - char pfx = 0; - TreeServer* omitroute = this->BestRouteTo(omit); - if ((command == "NOTICE") || (command == "PRIVMSG")) - { - if (params.size() >= 2) - { - /* Prefixes */ - if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+')) - { - pfx = params[0][0]; - params[0] = params[0].substr(1, params[0].length()-1); - } - if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$')) - { - // special routing for private messages/notices - userrec* d = ServerInstance->FindNick(params[0]); - if (d) - { - std::deque par; - par.push_back(params[0]); - par.push_back(":"+params[1]); - this->DoOneToOne(prefix,command.c_str(),par,d->server); - return true; - } - } - else if (*(params[0].c_str()) == '$') - { - std::deque par; - par.push_back(params[0]); - par.push_back(":"+params[1]); - this->DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName()); - return true; - } - else - { - chanrec* c = ServerInstance->FindChan(params[0]); - userrec* u = ServerInstance->FindNick(prefix); - if (c && u) - { - CUList elist; - TreeServerList list; - FOREACH_MOD(I_OnBuildExemptList, OnBuildExemptList((command == "PRIVMSG" ? MSG_PRIVMSG : MSG_NOTICE), c, u, pfx, elist)); - GetListOfServersForChannel(c,list,pfx,elist); - - for (TreeServerList::iterator i = list.begin(); i != list.end(); i++) - { - TreeSocket* Sock = i->second->GetSocket(); - if ((Sock) && (i->second->GetName() != omit) && (omitroute != i->second)) - { - Sock->WriteLine(data); - } - } - return true; - } - } - } - } - unsigned int items =this->TreeRoot->ChildCount(); - for (unsigned int x = 0; x < items; x++) - { - TreeServer* Route = this->TreeRoot->GetChild(x); - if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route)) - { - TreeSocket* Sock = Route->GetSocket(); - if (Sock) - Sock->WriteLine(data); - } - } - return true; -} - -bool SpanningTreeUtilities::DoOneToAllButSender(const std::string &prefix, const std::string &command, std::deque ¶ms, std::string omit) -{ - TreeServer* omitroute = this->BestRouteTo(omit); - std::string FullLine = ":" + prefix + " " + command; - unsigned int words = params.size(); - for (unsigned int x = 0; x < words; x++) - { - FullLine = FullLine + " " + params[x]; - } - unsigned int items = this->TreeRoot->ChildCount(); - for (unsigned int x = 0; x < items; x++) - { - TreeServer* Route = this->TreeRoot->GetChild(x); - // Send the line IF: - // The route has a socket (its a direct connection) - // The route isnt the one to be omitted - // The route isnt the path to the one to be omitted - if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route)) - { - TreeSocket* Sock = Route->GetSocket(); - if (Sock) - Sock->WriteLine(FullLine); - } - } - return true; -} - -bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, std::deque ¶ms) -{ - std::string FullLine = ":" + prefix + " " + command; - unsigned int words = params.size(); - for (unsigned int x = 0; x < words; x++) - { - FullLine = FullLine + " " + params[x]; - } - unsigned int items = this->TreeRoot->ChildCount(); - for (unsigned int x = 0; x < items; x++) - { - TreeServer* Route = this->TreeRoot->GetChild(x); - if (Route && Route->GetSocket()) - { - TreeSocket* Sock = Route->GetSocket(); - if (Sock) - Sock->WriteLine(FullLine); - } - } - return true; -} - -bool SpanningTreeUtilities::DoOneToMany(const char* prefix, const char* command, std::deque ¶ms) -{ - std::string spfx = prefix; - std::string scmd = command; - return this->DoOneToMany(spfx, scmd, params); -} - -bool SpanningTreeUtilities::DoOneToAllButSender(const char* prefix, const char* command, std::deque ¶ms, std::string omit) -{ - std::string spfx = prefix; - std::string scmd = command; - return this->DoOneToAllButSender(spfx, scmd, params, omit); -} - -bool SpanningTreeUtilities::DoOneToOne(const std::string &prefix, const std::string &command, std::deque ¶ms, std::string target) -{ - TreeServer* Route = this->BestRouteTo(target); - if (Route) - { - std::string FullLine = ":" + prefix + " " + command; - unsigned int words = params.size(); - for (unsigned int x = 0; x < words; x++) - { - FullLine = FullLine + " " + params[x]; - } - if (Route && Route->GetSocket()) - { - TreeSocket* Sock = Route->GetSocket(); - if (Sock) - Sock->WriteLine(FullLine); - } - return true; - } - else - { - return false; - } -} - -void SpanningTreeUtilities::ReadConfiguration(bool rebind) -{ - ConfigReader* Conf = new ConfigReader(ServerInstance); - if (rebind) - { - for (int j =0; j < Conf->Enumerate("bind"); j++) - { - std::string Type = Conf->ReadValue("bind","type",j); - std::string IP = Conf->ReadValue("bind","address",j); - std::string Port = Conf->ReadValue("bind","port",j); - std::string transport = Conf->ReadValue("bind","transport",j); - if (Type == "servers") - { - irc::portparser portrange(Port, false); - int portno = -1; - while ((portno = portrange.GetToken())) - { - if (IP == "*") - IP = ""; - - if ((!transport.empty()) && (hooks.find(transport.c_str()) == hooks.end())) - { - ServerInstance->Log(DEFAULT,"m_spanningtree: WARNING: Can't find transport type '%s' for port %s:%s - maybe you forgot to load it BEFORE m_spanningtree in your config file? - Skipping this port binding", - transport.c_str(), IP.c_str(), Port.c_str()); - break; - } - - TreeSocket* listener = new TreeSocket(this, ServerInstance, IP.c_str(), portno, true, 10, transport.empty() ? NULL : hooks[transport.c_str()]); - if (listener->GetState() == I_LISTENING) - { - ServerInstance->Log(DEFAULT,"m_spanningtree: Binding server port %s:%d successful!", IP.c_str(), portno); - Bindings.push_back(listener); - } - else - { - ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %s:%d",IP.c_str(), portno); - listener->Close(); - DELETE(listener); - } - } - } - } - } - FlatLinks = Conf->ReadFlag("options","flatlinks",0); - HideULines = Conf->ReadFlag("options","hideulines",0); - AnnounceTSChange = Conf->ReadFlag("options","announcets",0); - EnableTimeSync = !(Conf->ReadFlag("options","notimesync",0)); - LinkBlocks.clear(); - ValidIPs.clear(); - for (int j =0; j < Conf->Enumerate("link"); j++) - { - Link L; - std::string Allow = Conf->ReadValue("link","allowmask",j); - L.Name = (Conf->ReadValue("link","name",j)).c_str(); - L.IPAddr = Conf->ReadValue("link","ipaddr",j); - L.FailOver = Conf->ReadValue("link","failover",j).c_str(); - L.Port = Conf->ReadInteger("link","port",j,true); - L.SendPass = Conf->ReadValue("link","sendpass",j); - L.RecvPass = Conf->ReadValue("link","recvpass",j); - L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true); - L.HiddenFromStats = Conf->ReadFlag("link","hidden",j); - L.Timeout = Conf->ReadInteger("link","timeout",j,true); - L.Hook = Conf->ReadValue("link", "transport", j); - - if ((!L.Hook.empty()) && (hooks.find(L.Hook.c_str()) == hooks.end())) - { - ServerInstance->Log(DEFAULT,"m_spanningtree: WARNING: Can't find transport type '%s' for link '%s' - maybe you forgot to load it BEFORE m_spanningtree in your config file? Skipping tag completely.", - L.Hook.c_str(), L.Name.c_str()); - continue; - - } - - L.NextConnectTime = time(NULL) + L.AutoConnect; - /* Bugfix by brain, do not allow people to enter bad configurations */ - if (L.Name != ServerInstance->Config->ServerName) - { - if ((L.IPAddr != "") && (L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port)) - { - ValidIPs.push_back(L.IPAddr); - - if (Allow.length()) - ValidIPs.push_back(Allow); - - /* Needs resolving */ - insp_inaddr binip; - if (insp_aton(L.IPAddr.c_str(), &binip) < 1) - { - try - { - bool cached; - SecurityIPResolver* sr = new SecurityIPResolver((Module*)this->Creator, this, ServerInstance, L.IPAddr, L, cached); - ServerInstance->AddResolver(sr, cached); - } - catch (ModuleException& e) - { - } - } - - LinkBlocks.push_back(L); - } - else - { - if (L.IPAddr == "") - { - ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str()); - } - else if (L.RecvPass == "") - { - ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str()); - } - else if (L.SendPass == "") - { - ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str()); - } - else if (L.Name == "") - { - ServerInstance->Log(DEFAULT,"Invalid configuration, link tag without a name!"); - } - else if (!L.Port) - { - ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str()); - } - } - } - else - { - ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', link tag has the same server name as the local server!",L.Name.c_str()); - } - } - DELETE(Conf); -} - -/** To create a timer which recurs every second, we inherit from InspTimer. - * InspTimer is only one-shot however, so at the end of each Tick() we simply - * insert another of ourselves into the pending queue :) - */ -class TimeSyncTimer : public InspTimer -{ - private: - InspIRCd *Instance; - ModuleSpanningTree *Module; - public: - TimeSyncTimer(InspIRCd *Instance, ModuleSpanningTree *Mod); - virtual void Tick(time_t TIME); -}; - -HandshakeTimer::HandshakeTimer(InspIRCd* Inst, TreeSocket* s, Link* l, SpanningTreeUtilities* u) : InspTimer(1, time(NULL)), Instance(Inst), sock(s), lnk(l), Utils(u) -{ - thefd = sock->GetFd(); -} - -void HandshakeTimer::Tick(time_t TIME) -{ - if (Instance->SE->GetRef(thefd) == sock) - { - if (sock->GetHook() && InspSocketHSCompleteRequest(sock, (Module*)Utils->Creator, sock->GetHook()).Send()) - { - InspSocketAttachCertRequest(sock, (Module*)Utils->Creator, sock->GetHook()).Send(); - sock->SendCapabilities(); - if (sock->GetLinkState() == CONNECTING) - { - sock->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+lnk->SendPass+" 0 :"+this->Instance->Config->ServerDesc); - } - } - else - { - Instance->Timers->AddTimer(new HandshakeTimer(Instance, sock, lnk, Utils)); - } - } -} - -class ModuleSpanningTree : public Module -{ - int line; - int NumServers; - unsigned int max_local; - unsigned int max_global; - cmd_rconnect* command_rconnect; - SpanningTreeUtilities* Utils; - - public: - TimeSyncTimer *SyncTimer; - - ModuleSpanningTree(InspIRCd* Me) - : Module::Module(Me), max_local(0), max_global(0) - { - ServerInstance->UseInterface("InspSocketHook"); - - Utils = new SpanningTreeUtilities(Me, this); - - command_rconnect = new cmd_rconnect(ServerInstance, this, Utils); - ServerInstance->AddCommand(command_rconnect); - - if (Utils->EnableTimeSync) - { - SyncTimer = new TimeSyncTimer(ServerInstance, this); - ServerInstance->Timers->AddTimer(SyncTimer); - } - else - SyncTimer = NULL; - } - - void ShowLinks(TreeServer* Current, userrec* user, int hops) - { - std::string Parent = Utils->TreeRoot->GetName(); - if (Current->GetParent()) - { - Parent = Current->GetParent()->GetName(); - } - for (unsigned int q = 0; q < Current->ChildCount(); q++) - { - if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str()))) - { - if (*user->oper) - { - ShowLinks(Current->GetChild(q),user,hops+1); - } - } - else - { - ShowLinks(Current->GetChild(q),user,hops+1); - } - } - /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */ - if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!*user->oper)) - return; - user->WriteServ("364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),(Utils->FlatLinks && (!*user->oper)) ? ServerInstance->Config->ServerName : Parent.c_str(),(Utils->FlatLinks && (!*user->oper)) ? 0 : hops,Current->GetDesc().c_str()); - } - - int CountLocalServs() - { - return Utils->TreeRoot->ChildCount(); - } - - int CountServs() - { - return Utils->serverlist.size(); - } - - void HandleLinks(const char** parameters, int pcnt, userrec* user) - { - ShowLinks(Utils->TreeRoot,user,0); - user->WriteServ("365 %s * :End of /LINKS list.",user->nick); - return; - } - - void HandleLusers(const char** parameters, int pcnt, userrec* user) - { - unsigned int n_users = ServerInstance->UserCount(); - - /* Only update these when someone wants to see them, more efficient */ - if ((unsigned int)ServerInstance->LocalUserCount() > max_local) - max_local = ServerInstance->LocalUserCount(); - if (n_users > max_global) - max_global = n_users; - - unsigned int ulined_count = 0; - unsigned int ulined_local_count = 0; - - /* If ulined are hidden and we're not an oper, count the number of ulined servers hidden, - * locally and globally (locally means directly connected to us) - */ - if ((Utils->HideULines) && (!*user->oper)) - { - for (server_hash::iterator q = Utils->serverlist.begin(); q != Utils->serverlist.end(); q++) - { - if (ServerInstance->ULine(q->second->GetName().c_str())) - { - ulined_count++; - if (q->second->GetParent() == Utils->TreeRoot) - ulined_local_count++; - } - } - } - - user->WriteServ("251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-ServerInstance->InvisibleUserCount(),ServerInstance->InvisibleUserCount(),ulined_count ? this->CountServs() - ulined_count : this->CountServs()); - if (ServerInstance->OperCount()) - user->WriteServ("252 %s %d :operator(s) online",user->nick,ServerInstance->OperCount()); - if (ServerInstance->UnregisteredUserCount()) - user->WriteServ("253 %s %d :unknown connections",user->nick,ServerInstance->UnregisteredUserCount()); - if (ServerInstance->ChannelCount()) - user->WriteServ("254 %s %d :channels formed",user->nick,ServerInstance->ChannelCount()); - user->WriteServ("254 %s :I have %d clients and %d servers",user->nick,ServerInstance->LocalUserCount(),ulined_local_count ? this->CountLocalServs() - ulined_local_count : this->CountLocalServs()); - user->WriteServ("265 %s :Current Local Users: %d Max: %d",user->nick,ServerInstance->LocalUserCount(),max_local); - user->WriteServ("266 %s :Current Global Users: %d Max: %d",user->nick,n_users,max_global); - return; - } - - // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS. - - void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers) - { - if (line < 128) - { - for (int t = 0; t < depth; t++) - { - matrix[line][t] = ' '; - } - - // For Aligning, we need to work out exactly how deep this thing is, and produce - // a 'Spacer' String to compensate. - char spacer[40]; - - memset(spacer,' ',40); - if ((40 - Current->GetName().length() - depth) > 1) { - spacer[40 - Current->GetName().length() - depth] = '\0'; - } - else - { - spacer[5] = '\0'; - } - - float percent; - char text[80]; - if (ServerInstance->clientlist->size() == 0) { - // If there are no users, WHO THE HELL DID THE /MAP?!?!?! - percent = 0; - } - else - { - percent = ((float)Current->GetUserCount() / (float)ServerInstance->clientlist->size()) * 100; - } - snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent); - totusers += Current->GetUserCount(); - totservers++; - strlcpy(&matrix[line][depth],text,80); - line++; - for (unsigned int q = 0; q < Current->ChildCount(); q++) - { - if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str()))) - { - if (*user->oper) - { - ShowMap(Current->GetChild(q),user,(Utils->FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers); - } - } - else - { - ShowMap(Current->GetChild(q),user,(Utils->FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers); - } - } - } - } - - int HandleMotd(const char** parameters, int pcnt, userrec* user) - { - if (pcnt > 0) - { - /* Remote MOTD, the server is within the 1st parameter */ - std::deque params; - params.push_back(parameters[0]); - - /* Send it out remotely, generate no reply yet */ - TreeServer* s = Utils->FindServerMask(parameters[0]); - if (s) - { - Utils->DoOneToOne(user->nick, "MOTD", params, s->GetName()); - } - else - { - user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]); - } - return 1; - } - return 0; - } - - int HandleAdmin(const char** parameters, int pcnt, userrec* user) - { - if (pcnt > 0) - { - /* Remote ADMIN, the server is within the 1st parameter */ - std::deque params; - params.push_back(parameters[0]); - - /* Send it out remotely, generate no reply yet */ - TreeServer* s = Utils->FindServerMask(parameters[0]); - if (s) - { - Utils->DoOneToOne(user->nick, "ADMIN", params, s->GetName()); - } - else - { - user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]); - } - return 1; - } - return 0; - } - - int HandleStats(const char** parameters, int pcnt, userrec* user) - { - if (pcnt > 1) - { - /* Remote STATS, the server is within the 2nd parameter */ - std::deque params; - params.push_back(parameters[0]); - params.push_back(parameters[1]); - /* Send it out remotely, generate no reply yet */ - TreeServer* s = Utils->FindServerMask(parameters[1]); - if (s) - { - params[1] = s->GetName(); - Utils->DoOneToOne(user->nick, "STATS", params, s->GetName()); - } - else - { - user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]); - } - return 1; - } - return 0; - } - - // Ok, prepare to be confused. - // After much mulling over how to approach this, it struck me that - // the 'usual' way of doing a /MAP isnt the best way. Instead of - // keeping track of a ton of ascii characters, and line by line - // under recursion working out where to place them using multiplications - // and divisons, we instead render the map onto a backplane of characters - // (a character matrix), then draw the branches as a series of "L" shapes - // from the nodes. This is not only friendlier on CPU it uses less stack. - - void HandleMap(const char** parameters, int pcnt, userrec* user) - { - // This array represents a virtual screen which we will - // "scratch" draw to, as the console device of an irc - // client does not provide for a proper terminal. - float totusers = 0; - float totservers = 0; - char matrix[128][80]; - for (unsigned int t = 0; t < 128; t++) - { - matrix[t][0] = '\0'; - } - line = 0; - // The only recursive bit is called here. - ShowMap(Utils->TreeRoot,user,0,matrix,totusers,totservers); - // Process each line one by one. The algorithm has a limit of - // 128 servers (which is far more than a spanning tree should have - // anyway, so we're ok). This limit can be raised simply by making - // the character matrix deeper, 128 rows taking 10k of memory. - for (int l = 1; l < line; l++) - { - // scan across the line looking for the start of the - // servername (the recursive part of the algorithm has placed - // the servers at indented positions depending on what they - // are related to) - int first_nonspace = 0; - while (matrix[l][first_nonspace] == ' ') - { - first_nonspace++; - } - first_nonspace--; - // Draw the `- (corner) section: this may be overwritten by - // another L shape passing along the same vertical pane, becoming - // a |- (branch) section instead. - matrix[l][first_nonspace] = '-'; - matrix[l][first_nonspace-1] = '`'; - int l2 = l - 1; - // Draw upwards until we hit the parent server, causing possibly - // other corners (`-) to become branches (|-) - while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`')) - { - matrix[l2][first_nonspace-1] = '|'; - l2--; - } - } - // dump the whole lot to the user. This is the easy bit, honest. - for (int t = 0; t < line; t++) - { - user->WriteServ("006 %s :%s",user->nick,&matrix[t][0]); - } - float avg_users = totusers / totservers; - user->WriteServ("270 %s :%.0f server%s and %.0f user%s, average %.2f users per server",user->nick,totservers,(totservers > 1 ? "s" : ""),totusers,(totusers > 1 ? "s" : ""),avg_users); - user->WriteServ("007 %s :End of /MAP",user->nick); - return; - } - - int HandleSquit(const char** parameters, int pcnt, userrec* user) - { - TreeServer* s = Utils->FindServerMask(parameters[0]); - if (s) - { - if (s == Utils->TreeRoot) - { - user->WriteServ("NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]); - return 1; - } - TreeSocket* sock = s->GetSocket(); - if (sock) - { - ServerInstance->SNO->WriteToSnoMask('l',"SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick); - sock->Squit(s,std::string("Server quit by ") + user->GetFullRealHost()); - ServerInstance->SE->DelFd(sock); - sock->Close(); - delete sock; - } - else - { - /* route it */ - std::deque params; - params.push_back(parameters[0]); - params.push_back(std::string(":Server quit by ") + user->GetFullRealHost()); - Utils->DoOneToOne(user->nick, "RSQUIT", params, parameters[0]); - } - } - else - { - user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]); - } - return 1; - } - - int HandleTime(const char** parameters, int pcnt, userrec* user) - { - if ((IS_LOCAL(user)) && (pcnt)) - { - TreeServer* found = Utils->FindServerMask(parameters[0]); - if (found) - { - // we dont' override for local server - if (found == Utils->TreeRoot) - return 0; - - std::deque params; - params.push_back(found->GetName()); - params.push_back(user->nick); - Utils->DoOneToOne(ServerInstance->Config->ServerName,"TIME",params,found->GetName()); - } - else - { - user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]); - } - } - return 1; - } - - int HandleRemoteWhois(const char** parameters, int pcnt, userrec* user) - { - if ((IS_LOCAL(user)) && (pcnt > 1)) - { - userrec* remote = ServerInstance->FindNick(parameters[1]); - if ((remote) && (remote->GetFd() < 0)) - { - std::deque params; - params.push_back(parameters[1]); - Utils->DoOneToOne(user->nick,"IDLE",params,remote->server); - return 1; - } - else if (!remote) - { - user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[1]); - user->WriteServ("318 %s %s :End of /WHOIS list.",user->nick, parameters[1]); - return 1; - } - } - return 0; - } - - void DoPingChecks(time_t curtime) - { - for (unsigned int j = 0; j < Utils->TreeRoot->ChildCount(); j++) - { - TreeServer* serv = Utils->TreeRoot->GetChild(j); - TreeSocket* sock = serv->GetSocket(); - if (sock) - { - if (curtime >= serv->NextPingTime()) - { - if (serv->AnsweredLastPing()) - { - sock->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" PING "+serv->GetName()); - serv->SetNextPingTime(curtime + 60); - } - else - { - // they didnt answer, boot them - ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 pinged out",serv->GetName().c_str()); - sock->Squit(serv,"Ping timeout"); - ServerInstance->SE->DelFd(sock); - sock->Close(); - delete sock; - return; - } - } - } - } - } - - void ConnectServer(Link* x) - { - insp_inaddr binip; - - /* Do we already have an IP? If so, no need to resolve it. */ - if (insp_aton(x->IPAddr.c_str(), &binip) > 0) - { - /* Gave a hook, but it wasnt one we know */ - if ((!x->Hook.empty()) && (Utils->hooks.find(x->Hook.c_str()) == Utils->hooks.end())) - return; - - TreeSocket* newsocket = new TreeSocket(Utils, ServerInstance, x->IPAddr,x->Port,false,x->Timeout ? x->Timeout : 10,x->Name.c_str(), x->Hook.empty() ? NULL : Utils->hooks[x->Hook.c_str()]); - if (newsocket->GetFd() > -1) - { - /* Handled automatically on success */ - } - else - { - ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno)); - delete newsocket; - Utils->DoFailOver(x); - } - } - else - { - try - { - bool cached; - ServernameResolver* snr = new ServernameResolver((Module*)this, Utils, ServerInstance,x->IPAddr, *x, cached); - ServerInstance->AddResolver(snr, cached); - } - catch (ModuleException& e) - { - ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason()); - Utils->DoFailOver(x); - } - } - } - - void AutoConnectServers(time_t curtime) - { - for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) - { - if ((x->AutoConnect) && (curtime >= x->NextConnectTime)) - { - x->NextConnectTime = curtime + x->AutoConnect; - TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str()); - if (x->FailOver.length()) - { - TreeServer* CheckFailOver = Utils->FindServer(x->FailOver.c_str()); - if (CheckFailOver) - { - /* The failover for this server is currently a member of the network. - * The failover probably succeeded, where the main link did not. - * Don't try the main link until the failover is gone again. - */ - continue; - } - } - if (!CheckDupe) - { - // an autoconnected server is not connected. Check if its time to connect it - ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect); - this->ConnectServer(&(*x)); - } - } - } - } - - int HandleVersion(const char** parameters, int pcnt, userrec* user) - { - // we've already checked if pcnt > 0, so this is safe - TreeServer* found = Utils->FindServerMask(parameters[0]); - if (found) - { - std::string Version = found->GetVersion(); - user->WriteServ("351 %s :%s",user->nick,Version.c_str()); - if (found == Utils->TreeRoot) - { - ServerInstance->Config->Send005(user); - } - } - else - { - user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]); - } - return 1; - } - - int HandleConnect(const char** parameters, int pcnt, userrec* user) - { - for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) - { - if (ServerInstance->MatchText(x->Name.c_str(),parameters[0])) - { - TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str()); - if (!CheckDupe) - { - user->WriteServ("NOTICE %s :*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",user->nick,x->Name.c_str(),(x->HiddenFromStats ? "" : x->IPAddr.c_str()),x->Port); - ConnectServer(&(*x)); - return 1; - } - else - { - user->WriteServ("NOTICE %s :*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002",user->nick,x->Name.c_str(),CheckDupe->GetParent()->GetName().c_str()); - return 1; - } - } - } - user->WriteServ("NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]); - return 1; - } - - void BroadcastTimeSync() - { - std::deque params; - params.push_back(ConvToStr(ServerInstance->Time(true))); - Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params); - } - - virtual int OnStats(char statschar, userrec* user, string_list &results) - { - if ((statschar == 'c') || (statschar == 'n')) - { - for (unsigned int i = 0; i < Utils->LinkBlocks.size(); i++) - { - results.push_back(std::string(ServerInstance->Config->ServerName)+" 213 "+user->nick+" "+statschar+" *@"+(Utils->LinkBlocks[i].HiddenFromStats ? "" : Utils->LinkBlocks[i].IPAddr)+" * "+Utils->LinkBlocks[i].Name.c_str()+" "+ConvToStr(Utils->LinkBlocks[i].Port)+" "+(Utils->LinkBlocks[i].Hook.empty() ? "plaintext" : Utils->LinkBlocks[i].Hook)+" "+(Utils->LinkBlocks[i].AutoConnect ? 'a' : '-')+'s'); - if (statschar == 'c') - results.push_back(std::string(ServerInstance->Config->ServerName)+" 244 "+user->nick+" H * * "+Utils->LinkBlocks[i].Name.c_str()); - } - results.push_back(std::string(ServerInstance->Config->ServerName)+" 219 "+user->nick+" "+statschar+" :End of /STATS report"); - ServerInstance->SNO->WriteToSnoMask('t',"Notice: %s '%c' requested by %s (%s@%s)",(!strcmp(user->server,ServerInstance->Config->ServerName) ? "Stats" : "Remote stats"),statschar,user->nick,user->ident,user->host); - return 1; - } - return 0; - } - - virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated, const std::string &original_line) - { - /* If the command doesnt appear to be valid, we dont want to mess with it. */ - if (!validated) - return 0; - - if (command == "CONNECT") - { - return this->HandleConnect(parameters,pcnt,user); - } - else if (command == "STATS") - { - return this->HandleStats(parameters,pcnt,user); - } - else if (command == "MOTD") - { - return this->HandleMotd(parameters,pcnt,user); - } - else if (command == "ADMIN") - { - return this->HandleAdmin(parameters,pcnt,user); - } - else if (command == "SQUIT") - { - return this->HandleSquit(parameters,pcnt,user); - } - else if (command == "MAP") - { - this->HandleMap(parameters,pcnt,user); - return 1; - } - else if ((command == "TIME") && (pcnt > 0)) - { - return this->HandleTime(parameters,pcnt,user); - } - else if (command == "LUSERS") - { - this->HandleLusers(parameters,pcnt,user); - return 1; - } - else if (command == "LINKS") - { - this->HandleLinks(parameters,pcnt,user); - return 1; - } - else if (command == "WHOIS") - { - if (pcnt > 1) - { - // remote whois - return this->HandleRemoteWhois(parameters,pcnt,user); - } - } - else if ((command == "VERSION") && (pcnt > 0)) - { - this->HandleVersion(parameters,pcnt,user); - return 1; - } - - return 0; - } - - virtual void OnPostCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, CmdResult result, const std::string &original_line) - { - if ((result == CMD_SUCCESS) && (ServerInstance->IsValidModuleCommand(command, pcnt, user))) - { - // this bit of code cleverly routes all module commands - // to all remote severs *automatically* so that modules - // can just handle commands locally, without having - // to have any special provision in place for remote - // commands and linking protocols. - std::deque params; - params.clear(); - for (int j = 0; j < pcnt; j++) - { - if (strchr(parameters[j],' ')) - { - params.push_back(":" + std::string(parameters[j])); - } - else - { - params.push_back(std::string(parameters[j])); - } - } - Utils->DoOneToMany(user->nick,command,params); - } - } - - virtual void OnGetServerDescription(const std::string &servername,std::string &description) - { - TreeServer* s = Utils->FindServer(servername); - if (s) - { - description = s->GetDesc(); - } - } - - virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel) - { - if (IS_LOCAL(source)) - { - std::deque params; - params.push_back(dest->nick); - params.push_back(channel->name); - Utils->DoOneToMany(source->nick,"INVITE",params); - } - } - - virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic) - { - std::deque params; - params.push_back(chan->name); - params.push_back(":"+topic); - Utils->DoOneToMany(user->nick,"TOPIC",params); - } - - virtual void OnWallops(userrec* user, const std::string &text) - { - if (IS_LOCAL(user)) - { - std::deque params; - params.push_back(":"+text); - Utils->DoOneToMany(user->nick,"WALLOPS",params); - } - } - - virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list) - { - if (target_type == TYPE_USER) - { - userrec* d = (userrec*)dest; - if ((d->GetFd() < 0) && (IS_LOCAL(user))) - { - std::deque params; - params.clear(); - params.push_back(d->nick); - params.push_back(":"+text); - Utils->DoOneToOne(user->nick,"NOTICE",params,d->server); - } - } - else if (target_type == TYPE_CHANNEL) - { - if (IS_LOCAL(user)) - { - chanrec *c = (chanrec*)dest; - if (c) - { - std::string cname = c->name; - if (status) - cname = status + cname; - TreeServerList list; - Utils->GetListOfServersForChannel(c,list,status,exempt_list); - - for (TreeServerList::iterator i = list.begin(); i != list.end(); i++) - { - TreeSocket* Sock = i->second->GetSocket(); - if (Sock) - Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text); - } - } - } - } - else if (target_type == TYPE_SERVER) - { - if (IS_LOCAL(user)) - { - char* target = (char*)dest; - std::deque par; - par.push_back(target); - par.push_back(":"+text); - Utils->DoOneToMany(user->nick,"NOTICE",par); - } - } - } - - virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list) - { - if (target_type == TYPE_USER) - { - // route private messages which are targetted at clients only to the server - // which needs to receive them - userrec* d = (userrec*)dest; - if ((d->GetFd() < 0) && (IS_LOCAL(user))) - { - std::deque params; - params.clear(); - params.push_back(d->nick); - params.push_back(":"+text); - Utils->DoOneToOne(user->nick,"PRIVMSG",params,d->server); - } - } - else if (target_type == TYPE_CHANNEL) - { - if (IS_LOCAL(user)) - { - chanrec *c = (chanrec*)dest; - if (c) - { - std::string cname = c->name; - if (status) - cname = status + cname; - TreeServerList list; - Utils->GetListOfServersForChannel(c,list,status,exempt_list); - - for (TreeServerList::iterator i = list.begin(); i != list.end(); i++) - { - TreeSocket* Sock = i->second->GetSocket(); - if (Sock) - Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text); - } - } - } - } - else if (target_type == TYPE_SERVER) - { - if (IS_LOCAL(user)) - { - char* target = (char*)dest; - std::deque par; - par.push_back(target); - par.push_back(":"+text); - Utils->DoOneToMany(user->nick,"PRIVMSG",par); - } - } - } - - virtual void OnBackgroundTimer(time_t curtime) - { - AutoConnectServers(curtime); - DoPingChecks(curtime); - } - - virtual void OnUserJoin(userrec* user, chanrec* channel) - { - // Only do this for local users - if (IS_LOCAL(user)) - { - if (channel->GetUserCounter() == 1) - { - std::deque params; - // set up their permissions and the channel TS with FJOIN. - // All users are FJOINed now, because a module may specify - // new joining permissions for the user. - params.push_back(channel->name); - params.push_back(ConvToStr(channel->age)); - params.push_back(std::string(channel->GetAllPrefixChars(user))+","+std::string(user->nick)); - Utils->DoOneToMany(ServerInstance->Config->ServerName,"FJOIN",params); - /* First user in, sync the modes for the channel */ - params.pop_back(); - /* This is safe, all inspircd servers default to +nt */ - params.push_back("+nt"); - Utils->DoOneToMany(ServerInstance->Config->ServerName,"FMODE",params); - } - else - { - std::deque params; - params.push_back(channel->name); - params.push_back(ConvToStr(channel->age)); - Utils->DoOneToMany(user->nick,"JOIN",params); - } - } - } - - virtual void OnChangeHost(userrec* user, const std::string &newhost) - { - // only occurs for local clients - if (user->registered != REG_ALL) - return; - std::deque params; - params.push_back(newhost); - Utils->DoOneToMany(user->nick,"FHOST",params); - } - - virtual void OnChangeName(userrec* user, const std::string &gecos) - { - // only occurs for local clients - if (user->registered != REG_ALL) - return; - std::deque params; - params.push_back(gecos); - Utils->DoOneToMany(user->nick,"FNAME",params); - } - - virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage) - { - if (IS_LOCAL(user)) - { - std::deque params; - params.push_back(channel->name); - if (partmessage != "") - params.push_back(":"+partmessage); - Utils->DoOneToMany(user->nick,"PART",params); - } - } - - virtual void OnUserConnect(userrec* user) - { - char agestr[MAXBUF]; - if (IS_LOCAL(user)) - { - std::deque params; - snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age); - params.push_back(agestr); - params.push_back(user->nick); - params.push_back(user->host); - params.push_back(user->dhost); - params.push_back(user->ident); - params.push_back("+"+std::string(user->FormatModes())); - params.push_back(user->GetIPString()); - params.push_back(":"+std::string(user->fullname)); - Utils->DoOneToMany(ServerInstance->Config->ServerName,"NICK",params); - - // User is Local, change needs to be reflected! - TreeServer* SourceServer = Utils->FindServer(user->server); - if (SourceServer) - { - SourceServer->AddUserCount(); - } - - } - } - - virtual void OnUserQuit(userrec* user, const std::string &reason) - { - if ((IS_LOCAL(user)) && (user->registered == REG_ALL)) - { - std::deque params; - params.push_back(":"+reason); - Utils->DoOneToMany(user->nick,"QUIT",params); - } - // Regardless, We need to modify the user Counts.. - TreeServer* SourceServer = Utils->FindServer(user->server); - if (SourceServer) - { - SourceServer->DelUserCount(); - } - - } - - virtual void OnUserPostNick(userrec* user, const std::string &oldnick) - { - if (IS_LOCAL(user)) - { - std::deque params; - params.push_back(user->nick); - Utils->DoOneToMany(oldnick,"NICK",params); - } - } - - virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason) - { - if ((source) && (IS_LOCAL(source))) - { - std::deque params; - params.push_back(chan->name); - params.push_back(user->nick); - params.push_back(":"+reason); - Utils->DoOneToMany(source->nick,"KICK",params); - } - else if (!source) - { - std::deque params; - params.push_back(chan->name); - params.push_back(user->nick); - params.push_back(":"+reason); - Utils->DoOneToMany(ServerInstance->Config->ServerName,"KICK",params); - } - } - - virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason) - { - std::deque params; - params.push_back(dest->nick); - params.push_back(":"+reason); - Utils->DoOneToMany(source->nick,"KILL",params); - } - - virtual void OnRehash(userrec* user, const std::string ¶meter) - { - if (parameter != "") - { - std::deque params; - params.push_back(parameter); - Utils->DoOneToMany(user ? user->nick : ServerInstance->Config->ServerName, "REHASH", params); - // check for self - if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameter)) - { - ServerInstance->WriteOpers("*** Remote rehash initiated locally by \002%s\002", user ? user->nick : ServerInstance->Config->ServerName); - ServerInstance->RehashServer(); - } - } - Utils->ReadConfiguration(false); - InitializeDisabledCommands(ServerInstance->Config->DisabledCommands, ServerInstance); - } - - // note: the protocol does not allow direct umode +o except - // via NICK with 8 params. sending OPERTYPE infers +o modechange - // locally. - virtual void OnOper(userrec* user, const std::string &opertype) - { - if (IS_LOCAL(user)) - { - std::deque params; - params.push_back(opertype); - Utils->DoOneToMany(user->nick,"OPERTYPE",params); - } - } - - void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason) - { - if (!source) - { - /* Server-set lines */ - char data[MAXBUF]; - snprintf(data,MAXBUF,"%c %s %s %lu %lu :%s", linetype, host.c_str(), ServerInstance->Config->ServerName, (unsigned long)ServerInstance->Time(false), - (unsigned long)duration, reason.c_str()); - std::deque params; - params.push_back(data); - Utils->DoOneToMany(ServerInstance->Config->ServerName, "ADDLINE", params); - } - else - { - if (IS_LOCAL(source)) - { - char type[8]; - snprintf(type,8,"%cLINE",linetype); - std::string stype = type; - if (adding) - { - char sduration[MAXBUF]; - snprintf(sduration,MAXBUF,"%ld",duration); - std::deque params; - params.push_back(host); - params.push_back(sduration); - params.push_back(":"+reason); - Utils->DoOneToMany(source->nick,stype,params); - } - else - { - std::deque params; - params.push_back(host); - Utils->DoOneToMany(source->nick,stype,params); - } - } - } - } - - virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask) - { - OnLine(source,hostmask,true,'G',duration,reason); - } - - virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask) - { - OnLine(source,ipmask,true,'Z',duration,reason); - } - - virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask) - { - OnLine(source,nickmask,true,'Q',duration,reason); - } - - virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask) - { - OnLine(source,hostmask,true,'E',duration,reason); - } - - virtual void OnDelGLine(userrec* source, const std::string &hostmask) - { - OnLine(source,hostmask,false,'G',0,""); - } - - virtual void OnDelZLine(userrec* source, const std::string &ipmask) - { - OnLine(source,ipmask,false,'Z',0,""); - } - - virtual void OnDelQLine(userrec* source, const std::string &nickmask) - { - OnLine(source,nickmask,false,'Q',0,""); - } - - virtual void OnDelELine(userrec* source, const std::string &hostmask) - { - OnLine(source,hostmask,false,'E',0,""); - } - - virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text) - { - if ((IS_LOCAL(user)) && (user->registered == REG_ALL)) - { - if (target_type == TYPE_USER) - { - userrec* u = (userrec*)dest; - std::deque params; - params.push_back(u->nick); - params.push_back(text); - Utils->DoOneToMany(user->nick,"MODE",params); - } - else - { - chanrec* c = (chanrec*)dest; - std::deque params; - params.push_back(c->name); - params.push_back(text); - Utils->DoOneToMany(user->nick,"MODE",params); - } - } - } - - virtual void OnSetAway(userrec* user) - { - if (IS_LOCAL(user)) - { - std::deque params; - params.push_back(":"+std::string(user->awaymsg)); - Utils->DoOneToMany(user->nick,"AWAY",params); - } - } - - virtual void OnCancelAway(userrec* user) - { - if (IS_LOCAL(user)) - { - std::deque params; - params.clear(); - Utils->DoOneToMany(user->nick,"AWAY",params); - } - } - - virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline) - { - TreeSocket* s = (TreeSocket*)opaque; - if (target) - { - if (target_type == TYPE_USER) - { - userrec* u = (userrec*)target; - s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+u->nick+" "+ConvToStr(u->age)+" "+modeline); - } - else - { - chanrec* c = (chanrec*)target; - s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+modeline); - } - } - } - - virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata) - { - TreeSocket* s = (TreeSocket*)opaque; - if (target) - { - if (target_type == TYPE_USER) - { - userrec* u = (userrec*)target; - s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+u->nick+" "+extname+" :"+extdata); - } - else if (target_type == TYPE_CHANNEL) - { - chanrec* c = (chanrec*)target; - s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+c->name+" "+extname+" :"+extdata); - } - } - if (target_type == TYPE_OTHER) - { - s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA * "+extname+" :"+extdata); - } - } - - virtual void OnEvent(Event* event) - { - std::deque* params = (std::deque*)event->GetData(); - - if (event->GetEventID() == "send_metadata") - { - if (params->size() < 3) - return; - (*params)[2] = ":" + (*params)[2]; - Utils->DoOneToMany(ServerInstance->Config->ServerName,"METADATA",*params); - } - else if (event->GetEventID() == "send_topic") - { - if (params->size() < 2) - return; - (*params)[1] = ":" + (*params)[1]; - params->insert(params->begin() + 1,ServerInstance->Config->ServerName); - params->insert(params->begin() + 1,ConvToStr(ServerInstance->Time(true))); - Utils->DoOneToMany(ServerInstance->Config->ServerName,"FTOPIC",*params); - } - else if (event->GetEventID() == "send_mode") - { - if (params->size() < 2) - return; - // Insert the TS value of the object, either userrec or chanrec - time_t ourTS = 0; - userrec* a = ServerInstance->FindNick((*params)[0]); - if (a) - { - ourTS = a->age; - } - else - { - chanrec* a = ServerInstance->FindChan((*params)[0]); - if (a) - { - ourTS = a->age; - } - } - params->insert(params->begin() + 1,ConvToStr(ourTS)); - Utils->DoOneToMany(ServerInstance->Config->ServerName,"FMODE",*params); - } - else if (event->GetEventID() == "send_mode_explicit") - { - if (params->size() < 2) - return; - Utils->DoOneToMany(ServerInstance->Config->ServerName,"MODE",*params); - } - else if (event->GetEventID() == "send_opers") - { - if (params->size() < 1) - return; - (*params)[0] = ":" + (*params)[0]; - Utils->DoOneToMany(ServerInstance->Config->ServerName,"OPERNOTICE",*params); - } - else if (event->GetEventID() == "send_modeset") - { - if (params->size() < 2) - return; - (*params)[1] = ":" + (*params)[1]; - Utils->DoOneToMany(ServerInstance->Config->ServerName,"MODENOTICE",*params); - } - else if (event->GetEventID() == "send_snoset") - { - if (params->size() < 2) - return; - (*params)[1] = ":" + (*params)[1]; - Utils->DoOneToMany(ServerInstance->Config->ServerName,"SNONOTICE",*params); - } - else if (event->GetEventID() == "send_push") - { - if (params->size() < 2) - return; - - userrec *a = ServerInstance->FindNick((*params)[0]); - - if (!a) - return; - - (*params)[1] = ":" + (*params)[1]; - Utils->DoOneToOne(ServerInstance->Config->ServerName, "PUSH", *params, a->server); - } - } - - virtual ~ModuleSpanningTree() - { - /* This will also free the listeners */ - delete Utils; - if (SyncTimer) - ServerInstance->Timers->DelTimer(SyncTimer); - - ServerInstance->DoneWithInterface("InspSocketHook"); - } - - virtual Version GetVersion() - { - return Version(1,1,0,2,VF_VENDOR,API_VERSION); - } - - void Implements(char* List) - { - List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1; - List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1; - List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1; - List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1; - List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1; - List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1; - List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = List[I_OnPostCommand] = 1; - } - - /* It is IMPORTANT that m_spanningtree is the last module in the chain - * so that any activity it sees is FINAL, e.g. we arent going to send out - * a NICK message before m_cloaking has finished putting the +x on the user, - * etc etc. - * Therefore, we return PRIORITY_LAST to make sure we end up at the END of - * the module call queue. - */ - Priority Prioritize() - { - return PRIORITY_LAST; - } -}; - -TimeSyncTimer::TimeSyncTimer(InspIRCd *Inst, ModuleSpanningTree *Mod) : InspTimer(43200, Inst->Time(), true), Instance(Inst), Module(Mod) -{ -} - -void TimeSyncTimer::Tick(time_t TIME) -{ - Module->BroadcastTimeSync(); -} - -void SpanningTreeUtilities::DoFailOver(Link* x) -{ - if (x->FailOver.length()) - { - if (x->FailOver == x->Name) - { - ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Some muppet configured the failover for server \002%s\002 to point at itself. Not following it!", x->Name.c_str()); - return; - } - Link* TryThisOne = this->FindLink(x->FailOver.c_str()); - if (TryThisOne) - { - ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str()); - Creator->ConnectServer(TryThisOne); - } - else - { - ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str()); - } - } -} - -Link* SpanningTreeUtilities::FindLink(const std::string& name) -{ - for (std::vector::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++) - { - if (ServerInstance->MatchText(x->Name.c_str(), name.c_str())) - { - return &(*x); - } - } - return NULL; -} - -class ModuleSpanningTreeFactory : public ModuleFactory -{ - public: - ModuleSpanningTreeFactory() - { - } - - ~ModuleSpanningTreeFactory() - { - } - - virtual Module * CreateModule(InspIRCd* Me) - { - return new ModuleSpanningTree(Me); - } - -}; - - -extern "C" void * init_module( void ) -{ - return new ModuleSpanningTreeFactory; -} diff --git a/src/modules/m_spanningtree/main.cpp b/src/modules/m_spanningtree/main.cpp new file mode 100644 index 000000000..93115f060 --- /dev/null +++ b/src/modules/m_spanningtree/main.cpp @@ -0,0 +1,5487 @@ +/* +------------------------------------+ + * | Inspire Internet Relay Chat Daemon | + * +------------------------------------+ + * + * InspIRCd: (C) 2002-2007 InspIRCd Development Team + * See: http://www.inspircd.org/wiki/index.php/Credits + * + * This program is free but copyrighted software; see + * the file COPYING for details. + * + * --------------------------------------------------- + */ + +/* $ModDesc: Provides a spanning tree server link protocol */ + +#include "configreader.h" +#include "users.h" +#include "channels.h" +#include "modules.h" +#include "commands/cmd_whois.h" +#include "commands/cmd_stats.h" +#include "socket.h" +#include "inspircd.h" +#include "wildcard.h" +#include "xline.h" +#include "transport.h" + +/** If you make a change which breaks the protocol, increment this. + * If you completely change the protocol, completely change the number. + * + * IMPORTANT: If you make changes, document your changes here, without fail: + * http://www.inspircd.org/wiki/List_of_protocol_changes_between_versions + * + * Failure to document your protocol changes will result in a painfully + * painful death by pain. You have been warned. + */ +const long ProtocolVersion = 1103; + +/* + * The server list in InspIRCd is maintained as two structures + * which hold the data in different ways. Most of the time, we + * want to very quicky obtain three pieces of information: + * + * (1) The information on a server + * (2) The information on the server we must send data through + * to actually REACH the server we're after + * (3) Potentially, the child/parent objects of this server + * + * The InspIRCd spanning protocol provides easy access to these + * by storing the data firstly in a recursive structure, where + * each item references its parent item, and a dynamic list + * of child items, and another structure which stores the items + * hashed, linearly. This means that if we want to find a server + * by name quickly, we can look it up in the hash, avoiding + * any O(n) lookups. If however, during a split or sync, we want + * to apply an operation to a server, and any of its child objects + * we can resort to recursion to walk the tree structure. + * Any socket can have one of five states at any one time. + * The LISTENER state indicates a socket which is listening + * for connections. It cannot receive data itself, only incoming + * sockets. + * The CONNECTING state indicates an outbound socket which is + * waiting to be writeable. + * The WAIT_AUTH_1 state indicates the socket is outbound and + * has successfully connected, but has not yet sent and received + * SERVER strings. + * The WAIT_AUTH_2 state indicates that the socket is inbound + * (allocated by a LISTENER) but has not yet sent and received + * SERVER strings. + * The CONNECTED state represents a fully authorized, fully + * connected server. + */ +enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED }; + +/* Foward declarations */ +class TreeServer; +class TreeSocket; +class Link; +class ModuleSpanningTree; +class SpanningTreeUtilities; + +/* This hash_map holds the hash equivalent of the server + * tree, used for rapid linear lookups. + */ +typedef nspace::hash_map, irc::StrHashComp> server_hash; + +typedef std::map TreeServerList; + +/** A group of modules that implement InspSocketHook + * that we can use to hook our server to server connections. + */ +typedef std::map hookmodules; + +/** The Link class might as well be a struct, + * but this is C++ and we don't believe in structs (!). + * It holds the entire information of one + * tag from the main config file. We maintain a list + * of them, and populate the list on rehash/load. + */ +class Link : public classbase +{ + public: + irc::string Name; + std::string IPAddr; + int Port; + std::string SendPass; + std::string RecvPass; + unsigned long AutoConnect; + time_t NextConnectTime; + bool HiddenFromStats; + std::string FailOver; + std::string Hook; + int Timeout; +}; + +class HandshakeTimer : public InspTimer +{ + private: + InspIRCd* Instance; + TreeSocket* sock; + Link* lnk; + SpanningTreeUtilities* Utils; + int thefd; + public: + HandshakeTimer(InspIRCd* Inst, TreeSocket* s, Link* l, SpanningTreeUtilities* u); + virtual void Tick(time_t TIME); +}; + + +/** Contains helper functions and variables for this module, + * and keeps them out of the global namespace + */ +class SpanningTreeUtilities +{ + private: + /** Creator server + */ + InspIRCd* ServerInstance; + public: + /** Creator module + */ + ModuleSpanningTree* Creator; + /** Flatten links and /MAP for non-opers + */ + bool FlatLinks; + /** Hide U-Lined servers in /MAP and /LINKS + */ + bool HideULines; + /** Announce TS changes to channels on merge + */ + bool AnnounceTSChange; + /** Synchronize timestamps between servers + */ + bool EnableTimeSync; + /** Socket bindings for listening sockets + */ + std::vector Bindings; + /** This variable represents the root of the server tree + */ + TreeServer *TreeRoot; + /** IPs allowed to link to us + */ + std::vector ValidIPs; + /** Hash of currently connected servers by name + */ + server_hash serverlist; + /** Holds the data from the tags in the conf + */ + std::vector LinkBlocks; + /** Holds a bitmask of queued xline types waiting to be applied. + * Will be a mask containing values APPLY_GLINES, APPLY_KLINES, + * APPLY_QLINES and APPLY_ZLINES. + */ + int lines_to_apply; + + hookmodules hooks; + std::vector hooknames; + + /** Initialise utility class + */ + SpanningTreeUtilities(InspIRCd* Instance, ModuleSpanningTree* Creator); + /** Destroy class and free listeners etc + */ + ~SpanningTreeUtilities(); + /** Send a message from this server to one other local or remote + */ + bool DoOneToOne(const std::string &prefix, const std::string &command, std::deque ¶ms, std::string target); + /** Send a message from this server to all but one other, local or remote + */ + bool DoOneToAllButSender(const std::string &prefix, const std::string &command, std::deque ¶ms, std::string omit); + /** Send a message from this server to all but one other, local or remote + */ + bool DoOneToAllButSender(const char* prefix, const char* command, std::deque ¶ms, std::string omit); + /** Send a message from this server to all others + */ + bool DoOneToMany(const std::string &prefix, const std::string &command, std::deque ¶ms); + /** Send a message from this server to all others + */ + bool DoOneToMany(const char* prefix, const char* command, std::deque ¶ms); + /** Send a message from this server to all others, without doing any processing on the command (e.g. send it as-is with colons and all) + */ + bool DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, std::deque ¶ms); + /** Read the spanningtree module's tags from the config file + */ + void ReadConfiguration(bool rebind); + /** Add a server to the server list for GetListOfServersForChannel + */ + void AddThisServer(TreeServer* server, TreeServerList &list); + /** Compile a list of servers which contain members of channel c + */ + void GetListOfServersForChannel(chanrec* c, TreeServerList &list, char status, const CUList &exempt_list); + /** Find a server by name + */ + TreeServer* FindServer(const std::string &ServerName); + /** Find a route to a server by name + */ + TreeServer* BestRouteTo(const std::string &ServerName); + /** Find a server by glob mask + */ + TreeServer* FindServerMask(const std::string &ServerName); + /** Returns true if this is a server name we recognise + */ + bool IsServer(const std::string &ServerName); + /** Attempt to connect to the failover link of link x + */ + void DoFailOver(Link* x); + /** Find a link tag from a server name + */ + Link* FindLink(const std::string& name); +}; + + +/** Each server in the tree is represented by one class of + * type TreeServer. A locally connected TreeServer can + * have a class of type TreeSocket associated with it, for + * remote servers, the TreeSocket entry will be NULL. + * Each server also maintains a pointer to its parent + * (NULL if this server is ours, at the top of the tree) + * and a pointer to its "Route" (see the comments in the + * constructors below), and also a dynamic list of pointers + * to its children which can be iterated recursively + * if required. Creating or deleting objects of type + i* TreeServer automatically maintains the hash_map of + * TreeServer items, deleting and inserting them as they + * are created and destroyed. + */ +class TreeServer : public classbase +{ + InspIRCd* ServerInstance; /* Creator */ + TreeServer* Parent; /* Parent entry */ + TreeServer* Route; /* Route entry */ + std::vector Children; /* List of child objects */ + irc::string ServerName; /* Server's name */ + std::string ServerDesc; /* Server's description */ + std::string VersionString; /* Version string or empty string */ + int UserCount; /* Not used in this version */ + int OperCount; /* Not used in this version */ + TreeSocket* Socket; /* For directly connected servers this points at the socket object */ + time_t NextPing; /* After this time, the server should be PINGed*/ + bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */ + SpanningTreeUtilities* Utils; /* Utility class */ + + public: + + /** We don't use this constructor. Its a dummy, and won't cause any insertion + * of the TreeServer into the hash_map. See below for the two we DO use. + */ + TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance) : ServerInstance(Instance), Utils(Util) + { + Parent = NULL; + ServerName = ""; + ServerDesc = ""; + VersionString = ""; + UserCount = OperCount = 0; + VersionString = ServerInstance->GetVersionString(); + } + + /** We use this constructor only to create the 'root' item, Utils->TreeRoot, which + * represents our own server. Therefore, it has no route, no parent, and + * no socket associated with it. Its version string is our own local version. + */ + TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance, std::string Name, std::string Desc) : ServerInstance(Instance), ServerName(Name.c_str()), ServerDesc(Desc), Utils(Util) + { + Parent = NULL; + VersionString = ""; + UserCount = ServerInstance->UserCount(); + OperCount = ServerInstance->OperCount(); + VersionString = ServerInstance->GetVersionString(); + Route = NULL; + Socket = NULL; /* Fix by brain */ + AddHashEntry(); + } + + /** When we create a new server, we call this constructor to initialize it. + * This constructor initializes the server's Route and Parent, and sets up + * its ping counters so that it will be pinged one minute from now. + */ + TreeServer(SpanningTreeUtilities* Util, InspIRCd* Instance, std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) + : ServerInstance(Instance), Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock), Utils(Util) + { + VersionString = ""; + UserCount = OperCount = 0; + this->SetNextPingTime(time(NULL) + 60); + this->SetPingFlag(); + + /* find the 'route' for this server (e.g. the one directly connected + * to the local server, which we can use to reach it) + * + * In the following example, consider we have just added a TreeServer + * class for server G on our network, of which we are server A. + * To route traffic to G (marked with a *) we must send the data to + * B (marked with a +) so this algorithm initializes the 'Route' + * value to point at whichever server traffic must be routed through + * to get here. If we were to try this algorithm with server B, + * the Route pointer would point at its own object ('this'). + * + * A + * / \ + * + B C + * / \ \ + * D E F + * / \ + * * G H + * + * We only run this algorithm when a server is created, as + * the routes remain constant while ever the server exists, and + * do not need to be re-calculated. + */ + + Route = Above; + if (Route == Utils->TreeRoot) + { + Route = this; + } + else + { + while (this->Route->GetParent() != Utils->TreeRoot) + { + this->Route = Route->GetParent(); + } + } + + /* Because recursive code is slow and takes a lot of resources, + * we store two representations of the server tree. The first + * is a recursive structure where each server references its + * children and its parent, which is used for netbursts and + * netsplits to dump the whole dataset to the other server, + * and the second is used for very fast lookups when routing + * messages and is instead a hash_map, where each item can + * be referenced by its server name. The AddHashEntry() + * call below automatically inserts each TreeServer class + * into the hash_map as it is created. There is a similar + * maintainance call in the destructor to tidy up deleted + * servers. + */ + + this->AddHashEntry(); + } + + int QuitUsers(const std::string &reason) + { + const char* reason_s = reason.c_str(); + std::vector time_to_die; + for (user_hash::iterator n = ServerInstance->clientlist->begin(); n != ServerInstance->clientlist->end(); n++) + { + if (!strcmp(n->second->server, this->ServerName.c_str())) + { + time_to_die.push_back(n->second); + } + } + for (std::vector::iterator n = time_to_die.begin(); n != time_to_die.end(); n++) + { + userrec* a = (userrec*)*n; + if (!IS_LOCAL(a)) + userrec::QuitUser(ServerInstance,a,reason_s); + } + return time_to_die.size(); + } + + /** This method is used to add the structure to the + * hash_map for linear searches. It is only called + * by the constructors. + */ + void AddHashEntry() + { + server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str()); + if (iter == Utils->serverlist.end()) + Utils->serverlist[this->ServerName.c_str()] = this; + } + + /** This method removes the reference to this object + * from the hash_map which is used for linear searches. + * It is only called by the default destructor. + */ + void DelHashEntry() + { + server_hash::iterator iter = Utils->serverlist.find(this->ServerName.c_str()); + if (iter != Utils->serverlist.end()) + Utils->serverlist.erase(iter); + } + + /** These accessors etc should be pretty self- + * explanitory. + */ + TreeServer* GetRoute() + { + return Route; + } + + std::string GetName() + { + return ServerName.c_str(); + } + + std::string GetDesc() + { + return ServerDesc; + } + + std::string GetVersion() + { + return VersionString; + } + + void SetNextPingTime(time_t t) + { + this->NextPing = t; + LastPingWasGood = false; + } + + time_t NextPingTime() + { + return NextPing; + } + + bool AnsweredLastPing() + { + return LastPingWasGood; + } + + void SetPingFlag() + { + LastPingWasGood = true; + } + + int GetUserCount() + { + return UserCount; + } + + void AddUserCount() + { + UserCount++; + } + + void DelUserCount() + { + UserCount--; + } + + int GetOperCount() + { + return OperCount; + } + + TreeSocket* GetSocket() + { + return Socket; + } + + TreeServer* GetParent() + { + return Parent; + } + + void SetVersion(const std::string &Version) + { + VersionString = Version; + } + + unsigned int ChildCount() + { + return Children.size(); + } + + TreeServer* GetChild(unsigned int n) + { + if (n < Children.size()) + { + /* Make sure they cant request + * an out-of-range object. After + * all we know what these programmer + * types are like *grin*. + */ + return Children[n]; + } + else + { + return NULL; + } + } + + void AddChild(TreeServer* Child) + { + Children.push_back(Child); + } + + bool DelChild(TreeServer* Child) + { + for (std::vector::iterator a = Children.begin(); a < Children.end(); a++) + { + if (*a == Child) + { + Children.erase(a); + return true; + } + } + return false; + } + + /** Removes child nodes of this node, and of that node, etc etc. + * This is used during netsplits to automatically tidy up the + * server tree. It is slow, we don't use it for much else. + */ + bool Tidy() + { + bool stillchildren = true; + while (stillchildren) + { + stillchildren = false; + for (std::vector::iterator a = Children.begin(); a < Children.end(); a++) + { + TreeServer* s = (TreeServer*)*a; + s->Tidy(); + Children.erase(a); + DELETE(s); + stillchildren = true; + break; + } + } + return true; + } + + ~TreeServer() + { + /* We'd better tidy up after ourselves, eh? */ + this->DelHashEntry(); + } +}; + +/** Yay for fast searches! + * This is hundreds of times faster than recursion + * or even scanning a linked list, especially when + * there are more than a few servers to deal with. + * (read as: lots). + */ +TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName) +{ + server_hash::iterator iter; + iter = serverlist.find(ServerName.c_str()); + if (iter != serverlist.end()) + { + return iter->second; + } + else + { + return NULL; + } +} + +/** Returns the locally connected server we must route a + * message through to reach server 'ServerName'. This + * only applies to one-to-one and not one-to-many routing. + * See the comments for the constructor of TreeServer + * for more details. + */ +TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName) +{ + if (ServerName.c_str() == TreeRoot->GetName()) + return NULL; + TreeServer* Found = FindServer(ServerName); + if (Found) + { + return Found->GetRoute(); + } + else + { + return NULL; + } +} + +/** Find the first server matching a given glob mask. + * Theres no find-using-glob method of hash_map [awwww :-(] + * so instead, we iterate over the list using an iterator + * and match each one until we get a hit. Yes its slow, + * deal with it. + */ +TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName) +{ + for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++) + { + if (match(i->first.c_str(),ServerName.c_str())) + return i->second; + } + return NULL; +} + +/* A convenient wrapper that returns true if a server exists */ +bool SpanningTreeUtilities::IsServer(const std::string &ServerName) +{ + return (FindServer(ServerName) != NULL); +} + + +/** Handle /RCONNECT + */ +class cmd_rconnect : public command_t +{ + Module* Creator; + SpanningTreeUtilities* Utils; + public: + cmd_rconnect (InspIRCd* Instance, Module* Callback, SpanningTreeUtilities* Util) : command_t(Instance, "RCONNECT", 'o', 2), Creator(Callback), Utils(Util) + { + this->source = "m_spanningtree.so"; + syntax = " "; + } + + CmdResult Handle (const char** parameters, int pcnt, userrec *user) + { + if (IS_LOCAL(user)) + { + if (!Utils->FindServer(parameters[0])) + { + user->WriteServ("NOTICE %s :*** RCONNECT: Server \002%s\002 isn't connected to the network!", user->nick, parameters[0]); + return CMD_FAILURE; + } + + user->WriteServ("NOTICE %s :*** RCONNECT: Sending remote connect to \002%s\002 to connect server \002%s\002.",user->nick,parameters[0],parameters[1]); + } + + /* Is this aimed at our server? */ + if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameters[0])) + { + /* Yes, initiate the given connect */ + ServerInstance->SNO->WriteToSnoMask('l',"Remote CONNECT from %s matching \002%s\002, connecting server \002%s\002",user->nick,parameters[0],parameters[1]); + const char* para[1]; + para[0] = parameters[1]; + std::string original_command = std::string("CONNECT ") + parameters[1]; + Creator->OnPreCommand("CONNECT", para, 1, user, true, original_command); + } + + return CMD_SUCCESS; + } +}; + + + +/** Every SERVER connection inbound or outbound is represented by + * an object of type TreeSocket. + * TreeSockets, being inherited from InspSocket, 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 InspSocket +{ + SpanningTreeUtilities* Utils; + std::string myhost; + std::string in_buffer; + ServerState LinkState; + std::string InboundServerName; + std::string InboundDescription; + int num_lost_users; + int num_lost_servers; + time_t NextPing; + bool LastPingWasGood; + bool bursting; + unsigned int keylength; + std::string ModuleList; + std::map CapKeys; + Module* Hook; + + public: + + /** Because most of the I/O gubbins are encapsulated within + * InspSocket, 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, bool listening, unsigned long maxtime, Module* HookMod = NULL) + : InspSocket(SI, host, port, listening, maxtime), Utils(Util), Hook(HookMod) + { + myhost = host; + this->LinkState = LISTENER; + if (listening && Hook) + InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); + } + + TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName, Module* HookMod = NULL) + : InspSocket(SI, host, port, listening, maxtime), Utils(Util), Hook(HookMod) + { + myhost = ServerName; + this->LinkState = CONNECTING; + + if (Hook) + InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); + } + + /** 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) + : InspSocket(SI, newfd, ip), Utils(Util), Hook(HookMod) + { + this->LinkState = WAIT_AUTH_1; + + /* If we have a transport module hooked to the parent, hook the same module to this + * socket, and set a timer waiting for handshake before we send CAPAB etc. + */ + if (Hook) + { + InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); + Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(Utils->LinkBlocks[0]), this->Utils)); + } + else + { + /* Otherwise, theres no lower layer transport in plain TCP/IP, + * so just send the capabilities right now. + */ + this->SendCapabilities(); + } + } + + ServerState GetLinkState() + { + return this->LinkState; + } + + Module* GetHook() + { + return this->Hook; + } + + ~TreeSocket() + { + if (Hook) + InspSocketUnhookRequest(this, (Module*)Utils->Creator, Hook).Send(); + } + + /** When an outbound connection finishes connecting, we receive + * this event, and must send our SERVER string to the other + * side. If the other side is happy, as outlined in the server + * to server docs on the inspircd.org site, the other side + * will then send back its own server string. + */ + virtual bool OnConnected() + { + if (this->LinkState == CONNECTING) + { + /* we do not need to change state here. */ + for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) + { + if (x->Name == this->myhost) + { + this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "" : this->GetIP())+"] started."); + + if (Hook) + { + InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send(); + this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "" : this->GetIP())+"] using transport \2"+x->Hook+"\2"); + } + else + this->SendCapabilities(); + + /* found who we're supposed to be connecting to, send the neccessary gubbins. */ + if (Hook) + Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(*x), this->Utils)); + else + this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc); + + return true; + } + } + } + /* There is a (remote) chance that between the /CONNECT and the connection + * being accepted, some muppet has removed the block and rehashed. + * If that happens the connection hangs here until it's closed. Unlikely + * and rather harmless. + */ + this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2 lost link tag(!)"); + return true; + } + + virtual void OnError(InspSocketError e) + { + /* We don't handle this method, because all our + * dirty work is done in OnClose() (see below) + * which is still called on error conditions too. + */ + if (e == I_ERR_CONNECT) + { + this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Connection to \002"+myhost+"\002 refused"); + Link* MyLink = Utils->FindLink(myhost); + if (MyLink) + Utils->DoFailOver(MyLink); + } + } + + virtual int OnDisconnect() + { + /* For the same reason as above, we don't + * handle OnDisconnect() + */ + return true; + } + + /** 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) + { + char command[1024]; + for (unsigned int q = 0; q < Current->ChildCount(); q++) + { + TreeServer* recursive_server = Current->GetChild(q); + if (recursive_server != s) + { + snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str()); + this->WriteLine(command); + this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion()); + /* down to next level */ + this->SendServers(recursive_server, s, hops+1); + } + } + } + + std::string MyCapabilities() + { + std::vector modlist; + std::string capabilities = ""; + + for (int i = 0; i <= this->Instance->GetModuleCount(); i++) + { + if (this->Instance->modules[i]->GetVersion().Flags & VF_COMMON) + modlist.push_back(this->Instance->Config->module_names[i]); + } + sort(modlist.begin(),modlist.end()); + for (unsigned int i = 0; i < modlist.size(); i++) + { + if (i) + capabilities = capabilities + ","; + capabilities = capabilities + modlist[i]; + } + return capabilities; + } + + void SendCapabilities() + { + irc::commasepstream modulelist(MyCapabilities()); + + this->WriteLine("CAPAB START"); + + /* Send module names, split at 509 length */ + std::string item = "*"; + std::string line = "CAPAB MODULES "; + while ((item = modulelist.GetToken()) != "") + { + if (line.length() + item.length() + 1 > 509) + { + this->WriteLine(line); + line = "CAPAB MODULES "; + } + + if (line != "CAPAB MODULES ") + line.append(","); + + line.append(item); + } + if (line != "CAPAB MODULES ") + this->WriteLine(line); + + int ip6 = 0; + int ip6support = 0; +#ifdef IPV6 + ip6 = 1; +#endif +#ifdef SUPPORT_IP6LINKS + ip6support = 1; +#endif + this->WriteLine("CAPAB CAPABILITIES :NICKMAX="+ConvToStr(NICKMAX)+" HALFOP="+ConvToStr(this->Instance->Config->AllowHalfop)+" CHANMAX="+ConvToStr(CHANMAX)+" MAXMODES="+ConvToStr(MAXMODES)+" IDENTMAX="+ConvToStr(IDENTMAX)+" MAXQUIT="+ConvToStr(MAXQUIT)+" MAXTOPIC="+ConvToStr(MAXTOPIC)+" MAXKICK="+ConvToStr(MAXKICK)+" MAXGECOS="+ConvToStr(MAXGECOS)+" MAXAWAY="+ConvToStr(MAXAWAY)+" IP6NATIVE="+ConvToStr(ip6)+" IP6SUPPORT="+ConvToStr(ip6support)+" PROTOCOL="+ConvToStr(ProtocolVersion)); + + this->WriteLine("CAPAB END"); + } + + /* Check a comma seperated list for an item */ + bool HasItem(const std::string &list, const std::string &item) + { + irc::commasepstream seplist(list); + + std::string item2 = "*"; + while ((item2 = seplist.GetToken()) != "") + { + if (item2 == item) + return true; + } + + return false; + } + + /* Isolate and return the elements that are different between two comma seperated lists */ + std::string ListDifference(const std::string &one, const std::string &two) + { + irc::commasepstream list_one(one); + std::string item = "*"; + std::string result = ""; + while ((item = list_one.GetToken()) != "") + { + if (!HasItem(two, item)) + { + result.append(" "); + result.append(item); + } + } + return result; + } + + bool Capab(const std::deque ¶ms) + { + if (params.size() < 1) + { + this->WriteLine("ERROR :Invalid number of parameters for CAPAB - Mismatched version"); + return false; + } + + if (params[0] == "START") + { + this->ModuleList = ""; + this->CapKeys.clear(); + } + else if (params[0] == "END") + { + std::string reason = ""; + int ip6support = 0; +#ifdef SUPPORT_IP6LINKS + ip6support = 1; +#endif + /* Compare ModuleList and check CapKeys... + * Maybe this could be tidier? -- Brain + */ + if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length())) + { + std::string diff = ListDifference(this->ModuleList, this->MyCapabilities()); + if (!diff.length()) + { + diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList); + } + else + { + diff = "this server:" + diff; + } + if (diff.length() == 12) + reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists."; + else + reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff; + } + + if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support)))) + reason = "We don't both support linking to IPV6 servers"; + + if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support)) + reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers"; + + if (((this->CapKeys.find("NICKMAX") == this->CapKeys.end()) || ((this->CapKeys.find("NICKMAX") != this->CapKeys.end()) && (this->CapKeys.find("NICKMAX")->second != ConvToStr(NICKMAX))))) + reason = "Maximum nickname lengths differ or remote nickname length not specified"; + + if (((this->CapKeys.find("PROTOCOL") == this->CapKeys.end()) || ((this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) && (this->CapKeys.find("PROTOCOL")->second != ConvToStr(ProtocolVersion))))) + { + if (this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) + { + reason = "Mismatched protocol versions "+this->CapKeys.find("PROTOCOL")->second+" and "+ConvToStr(ProtocolVersion); + } + else + { + reason = "Protocol version not specified"; + } + } + + if (((this->CapKeys.find("HALFOP") == this->CapKeys.end()) && (Instance->Config->AllowHalfop)) || ((this->CapKeys.find("HALFOP") != this->CapKeys.end()) && (this->CapKeys.find("HALFOP")->second != ConvToStr(Instance->Config->AllowHalfop)))) + reason = "We don't both have halfop support enabled/disabled identically"; + + if (((this->CapKeys.find("IDENTMAX") == this->CapKeys.end()) || ((this->CapKeys.find("IDENTMAX") != this->CapKeys.end()) && (this->CapKeys.find("IDENTMAX")->second != ConvToStr(IDENTMAX))))) + reason = "Maximum ident lengths differ or remote ident length not specified"; + + if (((this->CapKeys.find("CHANMAX") == this->CapKeys.end()) || ((this->CapKeys.find("CHANMAX") != this->CapKeys.end()) && (this->CapKeys.find("CHANMAX")->second != ConvToStr(CHANMAX))))) + reason = "Maximum channel lengths differ or remote channel length not specified"; + + if (((this->CapKeys.find("MAXMODES") == this->CapKeys.end()) || ((this->CapKeys.find("MAXMODES") != this->CapKeys.end()) && (this->CapKeys.find("MAXMODES")->second != ConvToStr(MAXMODES))))) + reason = "Maximum modes per line differ or remote modes per line not specified"; + + if (((this->CapKeys.find("MAXQUIT") == this->CapKeys.end()) || ((this->CapKeys.find("MAXQUIT") != this->CapKeys.end()) && (this->CapKeys.find("MAXQUIT")->second != ConvToStr(MAXQUIT))))) + reason = "Maximum quit lengths differ or remote quit length not specified"; + + if (((this->CapKeys.find("MAXTOPIC") == this->CapKeys.end()) || ((this->CapKeys.find("MAXTOPIC") != this->CapKeys.end()) && (this->CapKeys.find("MAXTOPIC")->second != ConvToStr(MAXTOPIC))))) + reason = "Maximum topic lengths differ or remote topic length not specified"; + + if (((this->CapKeys.find("MAXKICK") == this->CapKeys.end()) || ((this->CapKeys.find("MAXKICK") != this->CapKeys.end()) && (this->CapKeys.find("MAXKICK")->second != ConvToStr(MAXKICK))))) + reason = "Maximum kick lengths differ or remote kick length not specified"; + + if (((this->CapKeys.find("MAXGECOS") == this->CapKeys.end()) || ((this->CapKeys.find("MAXGECOS") != this->CapKeys.end()) && (this->CapKeys.find("MAXGECOS")->second != ConvToStr(MAXGECOS))))) + reason = "Maximum GECOS (fullname) lengths differ or remote GECOS length not specified"; + + if (((this->CapKeys.find("MAXAWAY") == this->CapKeys.end()) || ((this->CapKeys.find("MAXAWAY") != this->CapKeys.end()) && (this->CapKeys.find("MAXAWAY")->second != ConvToStr(MAXAWAY))))) + reason = "Maximum awaymessage lengths differ or remote awaymessage length not specified"; + + if (reason.length()) + { + this->WriteLine("ERROR :CAPAB negotiation failed: "+reason); + return false; + } + } + else if ((params[0] == "MODULES") && (params.size() == 2)) + { + if (!this->ModuleList.length()) + { + this->ModuleList.append(params[1]); + } + else + { + this->ModuleList.append(","); + this->ModuleList.append(params[1]); + } + } + else if ((params[0] == "CAPABILITIES") && (params.size() == 2)) + { + irc::tokenstream capabs(params[1]); + std::string item = "*"; + while ((item = capabs.GetToken()) != "") + { + /* Process each key/value pair */ + std::string::size_type equals = item.rfind('='); + if (equals != std::string::npos) + { + std::string var = item.substr(0, equals); + std::string value = item.substr(equals+1, item.length()); + CapKeys[var] = value; + } + } + } + + return true; + } + + /** 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) + { + /* recursively squit the servers attached to 'Current'. + * We're going backwards so we don't remove users + * while we still need them ;) + */ + for (unsigned int q = 0; q < Current->ChildCount(); q++) + { + TreeServer* recursive_server = Current->GetChild(q); + this->SquitServer(from,recursive_server); + } + /* Now we've whacked the kids, whack self */ + num_lost_servers++; + num_lost_users += Current->QuitUsers(from); + } + + /** 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) + { + if ((Current) && (Current != Utils->TreeRoot)) + { + Event rmode((char*)Current->GetName().c_str(), (Module*)Utils->Creator, "lost_server"); + rmode.Send(Instance); + + std::deque params; + params.push_back(Current->GetName()); + params.push_back(":"+reason); + Utils->DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName()); + if (Current->GetParent() == Utils->TreeRoot) + { + this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split: "+reason); + } + else + { + this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason); + } + num_lost_servers = 0; + num_lost_users = 0; + std::string from = Current->GetParent()->GetName()+" "+Current->GetName(); + SquitServer(from, Current); + Current->Tidy(); + Current->GetParent()->DelChild(Current); + DELETE(Current); + this->Instance->WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers); + } + else + { + Instance->Log(DEFAULT,"Squit from unknown server"); + } + } + + /** FMODE command - server mode with timestamp checks */ + bool ForceMode(const std::string &source, std::deque ¶ms) + { + /* Chances are this is a 1.0 FMODE without TS */ + if (params.size() < 3) + { + /* No modes were in the command, probably a channel with no modes set on it */ + return true; + } + + bool smode = false; + std::string sourceserv; + + /* Are we dealing with an FMODE from a user, or from a server? */ + userrec* who = this->Instance->FindNick(source); + if (who) + { + /* FMODE from a user, set sourceserv to the users server name */ + sourceserv = who->server; + } + else + { + /* FMODE from a server, create a fake user to receive mode feedback */ + who = new userrec(this->Instance); + who->SetFd(FD_MAGIC_NUMBER); + smode = true; /* Setting this flag tells us we should free the userrec later */ + sourceserv = source; /* Set sourceserv to the actual source string */ + } + const char* modelist[64]; + time_t TS = 0; + int n = 0; + memset(&modelist,0,sizeof(modelist)); + for (unsigned int q = 0; (q < params.size()) && (q < 64); q++) + { + if (q == 1) + { + /* The timestamp is in this position. + * We don't want to pass that up to the + * server->client protocol! + */ + TS = atoi(params[q].c_str()); + } + else + { + /* Everything else is fine to append to the modelist */ + modelist[n++] = params[q].c_str(); + } + + } + /* Extract the TS value of the object, either userrec or chanrec */ + userrec* dst = this->Instance->FindNick(params[0]); + chanrec* chan = NULL; + time_t ourTS = 0; + if (dst) + { + ourTS = dst->age; + } + else + { + chan = this->Instance->FindChan(params[0]); + if (chan) + { + ourTS = chan->age; + } + else + /* Oops, channel doesnt exist! */ + return true; + } + + /* TS is equal: Merge the mode changes, use voooodoooooo on modes + * with parameters. + */ + if (TS == ourTS) + { + ModeHandler* mh = NULL; + unsigned long paramptr = 3; + std::string to_bounce = ""; + std::string to_keep = ""; + std::vector params_to_keep; + std::string params_to_bounce = ""; + bool adding = true; + char cur_change = 1; + char old_change = 0; + char old_bounce_change = 0; + /* Merge modes, basically do special stuff to mode with params */ + for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++) + { + switch (*x) + { + case '-': + adding = false; + break; + case '+': + adding = true; + break; + default: + if (adding) + { + /* We only care about whats being set, + * not whats being unset + */ + mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER); + + if ((mh) && (mh->GetNumParams(adding) > 0) && (!mh->IsListMode())) + { + /* We only want to do special things to + * modes with parameters, we are going to rewrite + * those parameters + */ + ModePair ret; + adding ? cur_change = '+' : cur_change = '-'; + + ret = mh->ModeSet(smode ? NULL : who, dst, chan, params[paramptr]); + + /* The mode is set here, check which we should keep */ + if (ret.first) + { + bool which_to_keep = mh->CheckTimeStamp(TS, ourTS, params[paramptr], ret.second, chan); + + if (which_to_keep == true) + { + /* Keep ours, bounce theirs: + * Send back ours to them and + * drop their mode changs + */ + adding ? cur_change = '+' : cur_change = '-'; + if (cur_change != old_bounce_change) + to_bounce += cur_change; + to_bounce += *x; + old_bounce_change = cur_change; + + if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) + params_to_bounce.append(" ").append(ret.second); + } + else + { + /* Keep theirs: Accept their mode change, + * do nothing else + */ + adding ? cur_change = '+' : cur_change = '-'; + if (cur_change != old_change) + to_keep += cur_change; + to_keep += *x; + old_change = cur_change; + + if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) + params_to_keep.push_back(params[paramptr]); + } + } + else + { + /* Mode isnt set here, we want it */ + adding ? cur_change = '+' : cur_change = '-'; + if (cur_change != old_change) + to_keep += cur_change; + to_keep += *x; + old_change = cur_change; + + if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) + params_to_keep.push_back(params[paramptr]); + } + + paramptr++; + } + else + { + mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER); + + if (mh) + { + adding ? cur_change = '+' : cur_change = '-'; + + /* Just keep this, safe to merge with no checks + * it has no parameters + */ + + if (cur_change != old_change) + to_keep += cur_change; + to_keep += *x; + old_change = cur_change; + + if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) + { + params_to_keep.push_back(params[paramptr++]); + } + } + } + } + else + { + mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER); + + if (mh) + { + /* Taking a mode away */ + adding ? cur_change = '+' : cur_change = '-'; + + if (cur_change != old_change) + to_keep += cur_change; + to_keep += *x; + old_change = cur_change; + + if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size())) + params_to_keep.push_back(params[paramptr++]); + } + } + break; + } + } + + if (to_bounce.length()) + { + std::deque newparams; + newparams.push_back(params[0]); + newparams.push_back(ConvToStr(ourTS)); + newparams.push_back(to_bounce+params_to_bounce); + Utils->DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv); + } + + if (to_keep.length()) + { + unsigned int n = 2; + unsigned int q = 0; + modelist[0] = params[0].c_str(); + modelist[1] = to_keep.c_str(); + + if (params_to_keep.size() > 0) + { + for (q = 0; (q < params_to_keep.size()) && (q < 64); q++) + { + modelist[n++] = params_to_keep[q].c_str(); + } + } + + if (smode) + { + this->Instance->SendMode(modelist, n, who); + } + else + { + this->Instance->CallCommandHandler("MODE", modelist, n, who); + } + + /* HOT POTATO! PASS IT ON! */ + Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv); + } + } + else + /* U-lined servers always win regardless of their TS */ + if ((TS > ourTS) && (!this->Instance->ULine(source.c_str()))) + { + /* Bounce the mode back to its sender.* We use our lower TS, so the other end + * SHOULD accept it, if its clock is right. + * + * NOTE: We should check that we arent bouncing anything thats already set at this end. + * If we are, bounce +ourmode to 'reinforce' it. This prevents desyncs. + * e.g. They send +l 50, we have +l 10 set. rather than bounce -l 50, we bounce +l 10. + * + * Thanks to jilles for pointing out this one-hell-of-an-issue before i even finished + * writing the code. It took me a while to come up with this solution. + * + * XXX: BE SURE YOU UNDERSTAND THIS CODE FULLY BEFORE YOU MESS WITH IT. + */ + + std::deque newparams; /* New parameter list we send back */ + newparams.push_back(params[0]); /* Target, user or channel */ + newparams.push_back(ConvToStr(ourTS)); /* Timestamp value of the target */ + newparams.push_back(""); /* This contains the mode string. For now + * it's empty, we fill it below. + */ + + /* Intelligent mode bouncing. Don't just invert, reinforce any modes which are already + * set to avoid a desync here. + */ + std::string modebounce = ""; + bool adding = true; + unsigned int t = 3; + ModeHandler* mh = NULL; + char cur_change = 1; + char old_change = 0; + for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++) + { + /* Iterate over all mode chars in the sent set */ + switch (*x) + { + /* Adding or subtracting modes? */ + case '-': + adding = false; + break; + case '+': + adding = true; + break; + default: + /* Find the mode handler for this mode */ + mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER); + + /* Got a mode handler? + * This also prevents us bouncing modes we have no handler for. + */ + if (mh) + { + ModePair ret; + std::string p = ""; + + /* Does the mode require a parameter right now? + * If it does, fetch it if we can + */ + if ((mh->GetNumParams(adding) > 0) && (t < params.size())) + p = params[t++]; + + /* Call the ModeSet method to determine if its set with the + * given parameter here or not. + */ + ret = mh->ModeSet(smode ? NULL : who, dst, chan, p); + + /* XXX: Really. Dont ask. + * Determine from if its set combined with what the current + * 'state' is (adding or not) as to wether we should 'invert' + * or 'reinforce' the mode change + */ + (!ret.first ? (adding ? cur_change = '-' : cur_change = '+') : (!adding ? cur_change = '-' : cur_change = '+')); + + /* Quickly determine if we have 'flipped' from + to -, + * or - to +, to prevent unneccessary +/- chars in the + * output string that waste bandwidth + */ + if (cur_change != old_change) + modebounce += cur_change; + old_change = cur_change; + + /* Add the mode character to the output string */ + modebounce += mh->GetModeChar(); + + /* We got a parameter back from ModeHandler::ModeSet, + * are we supposed to be sending one out right now? + */ + if (ret.second.length()) + { + if (mh->GetNumParams(cur_change == '+') > 0) + /* Yes we're supposed to be sending out + * the parameter. Make sure it goes + */ + newparams.push_back(ret.second); + } + + } + break; + } + } + + /* Update the parameters for FMODE with the new 'bounced' string */ + newparams[2] = modebounce; + /* Only send it back the way it came, no need to send it anywhere else */ + Utils->DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv); + } + else + { + /* The server was ulined, but something iffy is up with the TS. + * Sound the alarm bells! + */ + if ((this->Instance->ULine(sourceserv.c_str())) && (TS > ourTS)) + { + this->Instance->WriteOpers("\2WARNING!\2 U-Lined server '%s' has bad TS for '%s' (accepted change): \2SYNC YOUR CLOCKS\2 to avoid this notice",sourceserv.c_str(),params[0].c_str()); + } + /* Allow the mode, route it to either server or user command handling */ + if (smode) + this->Instance->SendMode(modelist,n,who); + else + this->Instance->CallCommandHandler("MODE", modelist, n, who); + + /* HOT POTATO! PASS IT ON! */ + Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv); + } + /* Are we supposed to free the userrec? */ + if (smode) + DELETE(who); + + return true; + } + + /** FTOPIC command */ + bool ForceTopic(const std::string &source, std::deque ¶ms) + { + if (params.size() != 4) + return true; + time_t ts = atoi(params[1].c_str()); + std::string nsource = source; + + chanrec* c = this->Instance->FindChan(params[0]); + if (c) + { + if ((ts >= c->topicset) || (!*c->topic)) + { + std::string oldtopic = c->topic; + strlcpy(c->topic,params[3].c_str(),MAXTOPIC); + strlcpy(c->setby,params[2].c_str(),NICKMAX-1); + c->topicset = ts; + /* if the topic text is the same as the current topic, + * dont bother to send the TOPIC command out, just silently + * update the set time and set nick. + */ + if (oldtopic != params[3]) + { + userrec* user = this->Instance->FindNick(source); + if (!user) + { + c->WriteChannelWithServ(source.c_str(), "TOPIC %s :%s", c->name, c->topic); + } + else + { + c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic); + nsource = user->server; + } + /* all done, send it on its way */ + params[3] = ":" + params[3]; + Utils->DoOneToAllButSender(source,"FTOPIC",params,nsource); + } + } + + } + + return true; + } + + /** FJOIN, similar to TS6 SJOIN, but not quite. */ + bool ForceJoin(const std::string &source, std::deque ¶ms) + { + /* 1.1 FJOIN works as follows: + * + * Each FJOIN is sent along with a timestamp, and the side with the lowest + * timestamp 'wins'. From this point on we will refer to this side as the + * winner. The side with the higher timestamp loses, from this point on we + * will call this side the loser or losing side. This should be familiar to + * anyone who's dealt with dreamforge or TS6 before. + * + * When two sides of a split heal and this occurs, the following things + * will happen: + * + * If the timestamps are exactly equal, both sides merge their privilages + * and users, as in InspIRCd 1.0 and ircd2.8. The channels have not been + * re-created during a split, this is safe to do. + * + * + * If the timestamps are NOT equal, the losing side removes all privilage + * modes from all of its users that currently exist in the channel, before + * introducing new users into the channel which are listed in the FJOIN + * command's parameters. This means, all modes +ohv, and privilages added + * by modules, such as +qa. The losing side then LOWERS its timestamp value + * of the channel to match that of the winning side, and the modes of the + * users of the winning side are merged in with the losing side. The loser + * then sends out a set of FMODE commands which 'confirm' that it just + * removed all privilage modes from its existing users, which allows for + * services packages to still work correctly without needing to know the + * timestamping rules which InspIRCd follows. In TS6 servers this is always + * a problem, and services packages must contain code which explicitly + * behaves as TS6 does, removing ops from the losing side of a split where + * neccessary within its internal records, as this state information is + * not explicitly echoed out in that protocol. + * + * The winning side on the other hand will ignore all user modes from the + * losing side, so only its own modes get applied. Life is simple for those + * who succeed at internets. :-) + * + * NOTE: Unlike TS6 and dreamforge and other protocols which have SJOIN, + * FJOIN does not contain the simple-modes such as +iklmnsp. Why not, + * you ask? Well, quite simply because we don't need to. They'll be sent + * after the FJOIN by FMODE, and FMODE is timestamped, so in the event + * the losing side sends any modes for the channel which shouldnt win, + * they wont as their timestamp will be too high :-) + */ + + if (params.size() < 3) + return true; + + char first[MAXBUF]; /* The first parameter of the mode command */ + char modestring[MAXBUF]; /* The mode sequence (2nd parameter) of the mode command */ + char* mode_users[127]; /* The values used by the mode command */ + memset(&mode_users,0,sizeof(mode_users)); /* Initialize mode parameters */ + mode_users[0] = first; /* Set this up to be our on-stack value */ + mode_users[1] = modestring; /* Same here as above */ + strcpy(modestring,"+"); /* Initialize the mode sequence to just '+' */ + unsigned int modectr = 2; /* Pointer to the third mode parameter (e.g. the one after the +-sequence) */ + + userrec* who = NULL; /* User we are currently checking */ + std::string channel = params[0]; /* Channel name, as a string */ + time_t TS = atoi(params[1].c_str()); /* Timestamp given to us for remote side */ + bool created = false; + + /* Try and find the channel */ + chanrec* chan = this->Instance->FindChan(channel); + + /* Initialize channel name in the mode parameters */ + strlcpy(mode_users[0],channel.c_str(),MAXBUF); + + /* default TS is a high value, which if we dont have this + * channel will let the other side apply their modes. + */ + time_t ourTS = Instance->Time(true)+600; + + /* Does this channel exist? if it does, get its REAL timestamp */ + if (chan) + ourTS = chan->age; + else + created = true; /* don't perform deops, and set TS to correct time after processing. */ + + /* In 1.1, if they have the newer channel, we immediately clear + * all status modes from our users. We then accept their modes. + * If WE have the newer channel its the other side's job to do this. + * Note that this causes the losing server to send out confirming + * FMODE lines. + */ + if (ourTS > TS) + { + std::deque param_list; + + /* Lower the TS here */ + if (Utils->AnnounceTSChange && chan) + chan->WriteChannelWithServ(Instance->Config->ServerName, + "NOTICE %s :TS for %s changed from %lu to %lu", chan->name, chan->name, ourTS, TS); + ourTS = TS; + + /* Zap all the privilage modes on our side, if the channel exists here */ + if (!created) + { + param_list.push_back(channel); + /* Do this first! */ + chan->age = TS; + this->RemoveStatus(Instance->Config->ServerName, param_list); + } + } + + /* Put the final parameter of the FJOIN into a tokenstream ready to split it */ + irc::tokenstream users(params[2]); + std::string item = "*"; + + /* do this first, so our mode reversals are correctly received by other servers + * if there is a TS collision. + */ + params[2] = ":" + params[2]; + Utils->DoOneToAllButSender(source,"FJOIN",params,source); + + /* Now, process every 'prefixes,nick' pair */ + while (item != "") + { + /* Find next user */ + item = users.GetToken(); + + const char* usr = item.c_str(); + + /* Safety check just to make sure someones not sent us an FJOIN full of spaces + * (is this even possible?) */ + if (usr && *usr) + { + const char* permissions = usr; + int ntimes = 0; + char* nm = new char[MAXBUF]; + char* tnm = nm; + + /* Iterate through all the prefix values, convert them from prefixes + * to mode letters, and append them to the mode sequence + */ + while ((*permissions) && (*permissions != ',') && (ntimes < MAXBUF)) + { + ModeHandler* mh = Instance->Modes->FindPrefix(*permissions); + if (mh) + { + /* This is a valid prefix */ + ntimes++; + *tnm++ = mh->GetModeChar(); + } + else + { + /* Not a valid prefix... + * danger bill bobbertson! (that's will robinsons older brother ;-) ...) + */ + this->Instance->WriteOpers("ERROR: We received a user with an unknown prefix '%c'. Closed connection to avoid a desync.",*permissions); + this->WriteLine(std::string("ERROR :Invalid prefix '")+(*permissions)+"' in FJOIN"); + return false; + } + usr++; + permissions++; + } + + /* Null terminate modes */ + *tnm = 0; + /* Advance past the comma, to the nick */ + usr++; + + /* Check the user actually exists */ + who = this->Instance->FindNick(usr); + if (who) + { + /* Did they get any modes? How many times? */ + strlcat(modestring, nm, MAXBUF); + for (int k = 0; k < ntimes; k++) + mode_users[modectr++] = strdup(usr); + + /* Free temporary buffer used for mode sequence */ + delete[] nm; + + /* Check that the user's 'direction' is correct + * based on the server sending the FJOIN. We must + * check each nickname in turn, because the origin of + * the FJOIN may be different to the origin of the nicks + * in the command itself. + */ + TreeServer* route_back_again = Utils->BestRouteTo(who->server); + if ((!route_back_again) || (route_back_again->GetSocket() != this)) + { + /* Oh dear oh dear. */ + continue; + } + /* Finally, we can actually place the user into the channel. + * We're sure its right. Final answer, phone a friend. + */ + chanrec::JoinUser(this->Instance, who, channel.c_str(), true, ""); + + /* Have we already queued up MAXMODES modes with parameters + * (+qaohv) ready to be sent to the server? + */ + if (modectr >= (MAXMODES-1)) + { + /* Only actually give the users any status if we lost + * the FJOIN or drew (equal timestamps). + * It isn't actually possible for ourTS to be > TS here, + * only possible to actually have ourTS == TS, or + * ourTS < TS, because if we lost, we already lowered + * our TS above before we entered this loop. We only + * check >= as a safety measure, in case someone stuffed + * up. If someone DID stuff up, it was most likely me. + * Note: I do not like baseball bats in the face... + */ + if (ourTS >= TS) + { + this->Instance->SendMode((const char**)mode_users,modectr,who); + + /* Something stuffed up, and for some reason, the timestamp is + * NOT lowered right now and should be. Lower it. Usually this + * code won't be executed, doubtless someone will remove it some + * day soon. + */ + if (ourTS > TS) + { + Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS); + chan->age = TS; + ourTS = TS; + } + } + + /* Reset all this back to defaults, and + * free any ram we have left allocated. + */ + strcpy(mode_users[1],"+"); + for (unsigned int f = 2; f < modectr; f++) + free(mode_users[f]); + modectr = 2; + } + } + else + { + /* Remember to free this */ + delete[] nm; + /* If we got here, there's a nick in FJOIN which doesnt exist on this server. + * We don't try to process the nickname here (that WOULD cause a segfault because + * we'd be playing with null pointers) however, we DO pass the nickname on, just + * in case somehow we're desynched, so that other users which might be able to see + * the nickname get their fair chance to process it. + */ + Instance->Log(SPARSE,"Warning! Invalid user in FJOIN to channel %s IGNORED", channel.c_str()); + continue; + } + } + } + + /* there werent enough modes built up to flush it during FJOIN, + * or, there are a number left over. flush them out. + */ + if ((modectr > 2) && (who) && (chan)) + { + if (ourTS >= TS) + { + /* Our channel is newer than theirs. Evil deeds must be afoot. */ + this->Instance->SendMode((const char**)mode_users,modectr,who); + /* Yet again, we can't actually get a true value here, if everything else + * is working as it should. + */ + if (ourTS > TS) + { + Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS); + chan->age = TS; + ourTS = TS; + } + } + + /* Free anything we have left to free */ + for (unsigned int f = 2; f < modectr; f++) + free(mode_users[f]); + } + + /* if we newly created the channel, set it's TS properly. */ + if (created) + { + /* find created channel .. */ + chan = this->Instance->FindChan(channel); + if (chan) + /* w00t said this shouldnt be needed but it is. + * This isnt strictly true, as chan can be NULL + * if a nick collision has occured and therefore + * the channel was never created. + */ + chan->age = TS; + } + + /* All done. That wasnt so bad was it, you can wipe + * the sweat from your forehead now. :-) + */ + return true; + } + + /** NICK command */ + bool IntroduceClient(const std::string &source, std::deque ¶ms) + { + if (params.size() < 8) + return true; + if (params.size() > 8) + { + this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)"); + return true; + } + // NICK age nick host dhost ident +modes ip :gecos + // 0 1 2 3 4 5 6 7 + time_t age = atoi(params[0].c_str()); + + const char* tempnick = params[1].c_str(); + Instance->Log(DEBUG,"New remote client %s",tempnick); + + user_hash::iterator iter = this->Instance->clientlist->find(tempnick); + + if (iter != this->Instance->clientlist->end()) + { + // nick collision + this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision"); + userrec::QuitUser(this->Instance, iter->second, "Nickname collision"); + return true; + } + + userrec* _new = new userrec(this->Instance); + (*(this->Instance->clientlist))[tempnick] = _new; + _new->SetFd(FD_MAGIC_NUMBER); + strlcpy(_new->nick, tempnick,NICKMAX-1); + strlcpy(_new->host, params[2].c_str(),63); + strlcpy(_new->dhost, params[3].c_str(),63); + _new->server = this->Instance->FindServerNamePtr(source.c_str()); + strlcpy(_new->ident, params[4].c_str(),IDENTMAX); + strlcpy(_new->fullname, params[7].c_str(),MAXGECOS); + _new->registered = REG_ALL; + _new->signon = age; + + /* + * we need to remove the + from the modestring, so we can do our stuff + */ + std::string::size_type pos_after_plus = params[5].find_first_not_of('+'); + if (pos_after_plus != std::string::npos) + params[5] = params[5].substr(pos_after_plus); + + + for (std::string::iterator v = params[5].begin(); v != params[5].end(); v++) + { + _new->modes[(*v)-65] = 1; + /* For each mode thats set, increase counter */ + ModeHandler* mh = Instance->Modes->FindMode(*v, MODETYPE_USER); + if (mh) + mh->ChangeCount(1); + } + + /* now we've done with modes processing, put the + back for remote servers */ + params[5] = "+" + params[5]; + +#ifdef SUPPORT_IP6LINKS + if (params[6].find_first_of(":") != std::string::npos) + _new->SetSockAddr(AF_INET6, params[6].c_str(), 0); + else +#endif + _new->SetSockAddr(AF_INET, params[6].c_str(), 0); + + Instance->AddGlobalClone(_new); + + this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString()); + + params[7] = ":" + params[7]; + Utils->DoOneToAllButSender(source,"NICK", params, source); + + // Increment the Source Servers User Count.. + TreeServer* SourceServer = Utils->FindServer(source); + if (SourceServer) + { + SourceServer->AddUserCount(); + } + + FOREACH_MOD_I(Instance,I_OnPostConnect,OnPostConnect(_new)); + + return true; + } + + /** 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, chanrec* c) + { + std::string buffer; + char list[MAXBUF]; + std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age); + + size_t dlen, curlen; + dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age); + int numusers = 0; + char* ptr = list + dlen; + + CUList *ulist = c->GetUsers(); + std::string modes = ""; + std::string params = ""; + + for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) + { + // The first parameter gets a : before it + size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->second), i->second->nick); + + curlen += ptrlen; + ptr += ptrlen; + + numusers++; + + if (curlen > (480-NICKMAX)) + { + buffer.append(list).append("\r\n"); + + dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age); + ptr = list + dlen; + ptrlen = 0; + numusers = 0; + } + } + + if (numusers) + buffer.append(list).append("\r\n"); + + /* Sorry for the hax. Because newly created channels assume +nt, + * if this channel doesnt have +nt, explicitly send -n and -t for the missing modes. + */ + bool inverted = false; + if (!c->IsModeSet('n')) + { + modes.append("-n"); + inverted = true; + } + if (!c->IsModeSet('t')) + { + modes.append("-t"); + inverted = true; + } + if (inverted) + { + modes.append("+"); + } + + for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++) + { + modes.append("b"); + params.append(" ").append(b->data); + + if (params.length() >= MAXMODES) + { + /* Wrap at MAXMODES */ + buffer.append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params).append("\r\n"); + modes = ""; + params = ""; + } + } + + buffer.append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(c->ChanModes(true)); + + /* Only send these if there are any */ + if (!modes.empty()) + buffer.append("\r\n").append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params); + + this->WriteLine(buffer); + } + + /** Send G, Q, Z and E lines */ + void SendXLines(TreeServer* Current) + { + char data[MAXBUF]; + std::string buffer; + std::string n = this->Instance->Config->ServerName; + const char* sn = n.c_str(); + + /* Yes, these arent too nice looking, but they get the job done */ + for (std::vector::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++) + { + snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); + buffer.append(data); + } + for (std::vector::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++) + { + snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); + buffer.append(data); + } + for (std::vector::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++) + { + snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); + buffer.append(data); + } + for (std::vector::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++) + { + snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); + buffer.append(data); + } + for (std::vector::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++) + { + snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); + buffer.append(data); + } + for (std::vector::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++) + { + snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); + buffer.append(data); + } + for (std::vector::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++) + { + snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); + buffer.append(data); + } + for (std::vector::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++) + { + snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason); + buffer.append(data); + } + + if (!buffer.empty()) + this->WriteLine(buffer); + } + + /** Send channel modes and topics */ + void SendChannelModes(TreeServer* Current) + { + char data[MAXBUF]; + std::deque list; + std::string n = this->Instance->Config->ServerName; + const char* sn = n.c_str(); + for (chan_hash::iterator c = this->Instance->chanlist->begin(); c != this->Instance->chanlist->end(); c++) + { + SendFJoins(Current, c->second); + if (*c->second->topic) + { + snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic); + this->WriteLine(data); + } + FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)Utils->Creator,(void*)this)); + list.clear(); + c->second->GetExtList(list); + for (unsigned int j = 0; j < list.size(); j++) + { + FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)Utils->Creator,(void*)this,list[j])); + } + } + } + + /** send all users and their oper state/modes */ + void SendUsers(TreeServer* Current) + { + char data[MAXBUF]; + std::deque list; + std::string dataline; + for (user_hash::iterator u = this->Instance->clientlist->begin(); u != this->Instance->clientlist->end(); u++) + { + if (u->second->registered == REG_ALL) + { + snprintf(data,MAXBUF,":%s NICK %lu %s %s %s %s +%s %s :%s",u->second->server,(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->FormatModes(),u->second->GetIPString(),u->second->fullname); + this->WriteLine(data); + if (*u->second->oper) + { + snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->nick, u->second->oper); + this->WriteLine(data); + } + if (*u->second->awaymsg) + { + snprintf(data,MAXBUF,":%s AWAY :%s", u->second->nick, u->second->awaymsg); + this->WriteLine(data); + } + FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)Utils->Creator,(void*)this)); + list.clear(); + u->second->GetExtList(list); + for (unsigned int j = 0; j < list.size(); j++) + { + FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)Utils->Creator,(void*)this,list[j])); + } + } + } + } + + /** 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 + * users require their servers to exist, and channels require their + * users to exist. You get the idea. + */ + void DoBurst(TreeServer* s) + { + std::string burst = "BURST "+ConvToStr(Instance->Time(true)); + std::string endburst = "ENDBURST"; + // Because by the end of the netburst, it could be gone! + std::string name = s->GetName(); + this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2"+name+"\2."); + this->WriteLine(burst); + /* send our version string */ + this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" VERSION :"+this->Instance->GetVersionString()); + /* Send server tree */ + this->SendServers(Utils->TreeRoot,s,1); + /* Send users and their oper status */ + this->SendUsers(s); + /* Send everything else (channel modes, xlines etc) */ + this->SendChannelModes(s); + this->SendXLines(s); + FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)Utils->Creator,(void*)this)); + this->WriteLine(endburst); + this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2."); + } + + /** 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 InspSocket::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. + */ + virtual bool OnDataReady() + { + char* data = this->Read(); + /* Check that the data read is a valid pointer and it has some content */ + if (data && *data) + { + this->in_buffer.append(data); + /* While there is at least one new line in the buffer, + * do something useful (we hope!) with it. + */ + while (in_buffer.find("\n") != std::string::npos) + { + std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1); + in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n")); + /* Use rfind here not find, as theres more + * chance of the \r being near the end of the + * string, not the start. + */ + if (ret.find("\r") != std::string::npos) + ret = in_buffer.substr(0,in_buffer.find("\r")-1); + /* Process this one, abort if it + * didnt return true. + */ + if (!this->ProcessLine(ret)) + { + return false; + } + } + return true; + } + /* EAGAIN returns an empty but non-NULL string, so this + * evaluates to TRUE for EAGAIN but to FALSE for EOF. + */ + return (data && !*data); + } + + int WriteLine(std::string line) + { + Instance->Log(DEBUG, "-> %s", line.c_str()); + line.append("\r\n"); + return this->Write(line); + } + + /* Handle ERROR command */ + bool Error(std::deque ¶ms) + { + if (params.size() < 1) + return false; + this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str()); + /* we will return false to cause the socket to close. */ + return false; + } + + /** remote MOTD. leet, huh? */ + bool Motd(const std::string &prefix, std::deque ¶ms) + { + if (params.size() > 0) + { + if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0])) + { + /* It's for our server */ + string_list results; + userrec* source = this->Instance->FindNick(prefix); + + if (source) + { + std::deque par; + par.push_back(prefix); + par.push_back(""); + + if (!Instance->Config->MOTD.size()) + { + par[1] = std::string("::")+Instance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing."; + Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); + return true; + } + + par[1] = std::string("::")+Instance->Config->ServerName+" 375 "+source->nick+" :"+Instance->Config->ServerName+" message of the day"; + Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); + + for (unsigned int i = 0; i < Instance->Config->MOTD.size(); i++) + { + par[1] = std::string("::")+Instance->Config->ServerName+" 372 "+source->nick+" :- "+Instance->Config->MOTD[i]; + Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); + } + + par[1] = std::string("::")+Instance->Config->ServerName+" 376 "+source->nick+" End of message of the day."; + Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); + } + } + else + { + /* Pass it on */ + userrec* source = this->Instance->FindNick(prefix); + if (source) + Utils->DoOneToOne(prefix, "MOTD", params, params[0]); + } + } + return true; + } + + /** remote ADMIN. leet, huh? */ + bool Admin(const std::string &prefix, std::deque ¶ms) + { + if (params.size() > 0) + { + if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0])) + { + /* It's for our server */ + string_list results; + userrec* source = this->Instance->FindNick(prefix); + + if (source) + { + std::deque par; + par.push_back(prefix); + par.push_back(""); + + par[1] = std::string("::")+Instance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+Instance->Config->ServerName; + Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); + + par[1] = std::string("::")+Instance->Config->ServerName+" 257 "+source->nick+" :Name - "+Instance->Config->AdminName; + Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); + + par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+Instance->Config->AdminNick; + Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); + + par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+Instance->Config->AdminEmail; + Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); + } + } + else + { + /* Pass it on */ + userrec* source = this->Instance->FindNick(prefix); + if (source) + Utils->DoOneToOne(prefix, "ADMIN", params, params[0]); + } + } + return true; + } + + bool Stats(const std::string &prefix, std::deque ¶ms) + { + /* Get the reply to a STATS query if it matches this servername, + * and send it back as a load of PUSH queries + */ + if (params.size() > 1) + { + if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1])) + { + /* It's for our server */ + string_list results; + userrec* source = this->Instance->FindNick(prefix); + if (source) + { + std::deque par; + par.push_back(prefix); + par.push_back(""); + DoStats(this->Instance, *(params[0].c_str()), source, results); + for (size_t i = 0; i < results.size(); i++) + { + par[1] = "::" + results[i]; + Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server); + } + } + } + else + { + /* Pass it on */ + userrec* source = this->Instance->FindNick(prefix); + if (source) + Utils->DoOneToOne(prefix, "STATS", params, params[1]); + } + } + return true; + } + + + /** 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) + { + if (params.size() != 1) + return true; + std::string opertype = params[0]; + userrec* u = this->Instance->FindNick(prefix); + if (u) + { + u->modes[UM_OPERATOR] = 1; + this->Instance->all_opers.push_back(u); + strlcpy(u->oper,opertype.c_str(),NICKMAX-1); + Utils->DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server); + this->Instance->SNO->WriteToSnoMask('o',"From %s: User %s (%s@%s) is now an IRC operator of type %s",u->server, u->nick,u->ident,u->host,irc::Spacify(opertype.c_str())); + + } + return true; + } + + /** 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) + { + if (params.size() < 3) + return true; + + userrec* u = this->Instance->FindNick(params[0]); + + if (u) + { + Utils->DoOneToAllButSender(prefix,"SVSNICK",params,prefix); + if (IS_LOCAL(u)) + { + std::deque par; + par.push_back(params[1]); + /* This is not required as one is sent in OnUserPostNick below + */ + //Utils->DoOneToMany(u->nick,"NICK",par); + if (!u->ForceNickChange(params[1].c_str())) + { + userrec::QuitUser(this->Instance, u, "Nickname collision"); + return true; + } + u->age = atoi(params[2].c_str()); + } + } + return true; + } + + /* + * Remote SQUIT (RSQUIT). Routing works similar to SVSNICK: Route it to the server that the target is connected to locally, + * then let that server do the dirty work (squit it!). Example: + * A -> B -> C -> D: oper on A squits D, A routes to B, B routes to C, C notices D connected locally, kills it. -- w00t + */ + bool RemoteSquit(const std::string &prefix, std::deque ¶ms) + { + /* ok.. :w00t RSQUIT jupe.barafranca.com :reason here */ + if (params.size() < 2) + return true; + + TreeServer* s = Utils->FindServerMask(params[0]); + + if (s) + { + if (s == Utils->TreeRoot) + { + this->Instance->SNO->WriteToSnoMask('l',"What the fuck, I recieved a remote SQUIT for myself? :< (from %s", prefix.c_str()); + return true; + } + + TreeSocket* sock = s->GetSocket(); + + if (sock) + { + /* it's locally connected, KILL IT! */ + Instance->SNO->WriteToSnoMask('l',"RSQUIT: Server \002%s\002 removed from network by %s: %s", params[0].c_str(), prefix.c_str(), params[1].c_str()); + sock->Squit(s,"Server quit by " + prefix + ": " + params[1]); + Instance->SE->DelFd(sock); + sock->Close(); + delete sock; + } + else + { + /* route the rsquit */ + params[1] = ":" + params[1]; + Utils->DoOneToOne(prefix, "RSQUIT", params, params[0]); + } + } + else + { + /* mother fucker! it doesn't exist */ + } + + return true; + } + + bool ServiceJoin(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 2) + return true; + + userrec* u = this->Instance->FindNick(params[0]); + + if (u) + { + /* only join if it's local, otherwise just pass it on! */ + if (IS_LOCAL(u)) + chanrec::JoinUser(this->Instance, u, params[1].c_str(), false); + Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix); + } + return true; + } + + bool RemoteRehash(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 1) + return false; + + std::string servermask = params[0]; + + if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask)) + { + this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated by \002"+prefix+"\002."); + this->Instance->RehashServer(); + Utils->ReadConfiguration(false); + InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance); + } + Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix); + return true; + } + + bool RemoteKill(const std::string &prefix, std::deque ¶ms) + { + if (params.size() != 2) + return true; + + std::string nick = params[0]; + userrec* u = this->Instance->FindNick(prefix); + userrec* who = this->Instance->FindNick(nick); + + if (who) + { + /* Prepend kill source, if we don't have one */ + std::string sourceserv = prefix; + if (u) + { + sourceserv = u->server; + } + if (*(params[1].c_str()) != '[') + { + params[1] = "[" + sourceserv + "] Killed (" + params[1] +")"; + } + std::string reason = params[1]; + params[1] = ":" + params[1]; + Utils->DoOneToAllButSender(prefix,"KILL",params,sourceserv); + who->Write(":%s KILL %s :%s (%s)", sourceserv.c_str(), who->nick, sourceserv.c_str(), reason.c_str()); + userrec::QuitUser(this->Instance,who,reason); + } + return true; + } + + bool LocalPong(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 1) + return true; + + if (params.size() == 1) + { + TreeServer* ServerSource = Utils->FindServer(prefix); + if (ServerSource) + { + ServerSource->SetPingFlag(); + } + } + else + { + std::string forwardto = params[1]; + if (forwardto == this->Instance->Config->ServerName) + { + /* + * this is a PONG for us + * if the prefix is a user, check theyre local, and if they are, + * dump the PONG reply back to their fd. If its a server, do nowt. + * Services might want to send these s->s, but we dont need to yet. + */ + userrec* u = this->Instance->FindNick(prefix); + + if (u) + { + u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str()); + } + } + else + { + // not for us, pass it on :) + Utils->DoOneToOne(prefix,"PONG",params,forwardto); + } + } + + return true; + } + + bool MetaData(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 3) + return true; + + TreeServer* ServerSource = Utils->FindServer(prefix); + + if (ServerSource) + { + if (params[0] == "*") + { + FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2])); + } + else if (*(params[0].c_str()) == '#') + { + chanrec* c = this->Instance->FindChan(params[0]); + if (c) + { + FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2])); + } + } + else if (*(params[0].c_str()) != '#') + { + userrec* u = this->Instance->FindNick(params[0]); + if (u) + { + FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2])); + } + } + } + + params[2] = ":" + params[2]; + Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix); + return true; + } + + bool ServerVersion(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 1) + return true; + + TreeServer* ServerSource = Utils->FindServer(prefix); + + if (ServerSource) + { + ServerSource->SetVersion(params[0]); + } + params[0] = ":" + params[0]; + Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix); + return true; + } + + bool ChangeHost(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 1) + return true; + + userrec* u = this->Instance->FindNick(prefix); + + if (u) + { + u->ChangeDisplayedHost(params[0].c_str()); + Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server); + } + return true; + } + + bool AddLine(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 6) + return true; + + bool propogate = false; + + if (!this->bursting) + Utils->lines_to_apply = 0; + + switch (*(params[0].c_str())) + { + case 'Z': + propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); + Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str())); + if (propogate) + Utils->lines_to_apply |= APPLY_ZLINES; + break; + case 'Q': + propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); + Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str())); + if (propogate) + Utils->lines_to_apply |= APPLY_QLINES; + break; + case 'E': + propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); + Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str())); + break; + case 'G': + propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); + Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str())); + if (propogate) + Utils->lines_to_apply |= APPLY_GLINES; + break; + case 'K': + propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str()); + if (propogate) + Utils->lines_to_apply |= APPLY_KLINES; + break; + default: + /* Just in case... */ + this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!"); + propogate = false; + break; + } + + /* Send it on its way */ + if (propogate) + { + if (atoi(params[4].c_str())) + { + this->Instance->SNO->WriteToSnoMask('x',"%s Added %cLINE on %s to expire in %lu seconds (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),atoi(params[4].c_str()),params[5].c_str()); + } + else + { + this->Instance->SNO->WriteToSnoMask('x',"%s Added permenant %cLINE on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),params[5].c_str()); + } + params[5] = ":" + params[5]; + Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix); + } + if (!this->bursting) + { + Instance->XLines->apply_lines(Utils->lines_to_apply); + Utils->lines_to_apply = 0; + } + return true; + } + + bool ChangeName(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 1) + return true; + + userrec* u = this->Instance->FindNick(prefix); + + if (u) + { + u->ChangeName(params[0].c_str()); + params[0] = ":" + params[0]; + Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server); + } + return true; + } + + bool Whois(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 1) + return true; + + userrec* u = this->Instance->FindNick(prefix); + if (u) + { + // an incoming request + if (params.size() == 1) + { + userrec* x = this->Instance->FindNick(params[0]); + if ((x) && (IS_LOCAL(x))) + { + userrec* x = this->Instance->FindNick(params[0]); + char signon[MAXBUF]; + char idle[MAXBUF]; + + snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon); + snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-Instance->Time(true))); + std::deque par; + par.push_back(prefix); + par.push_back(signon); + par.push_back(idle); + // ours, we're done, pass it BACK + Utils->DoOneToOne(params[0],"IDLE",par,u->server); + } + else + { + // not ours pass it on + Utils->DoOneToOne(prefix,"IDLE",params,x->server); + } + } + else if (params.size() == 3) + { + std::string who_did_the_whois = params[0]; + userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois); + if ((who_to_send_to) && (IS_LOCAL(who_to_send_to))) + { + // an incoming reply to a whois we sent out + std::string nick_whoised = prefix; + unsigned long signon = atoi(params[1].c_str()); + unsigned long idle = atoi(params[2].c_str()); + if ((who_to_send_to) && (IS_LOCAL(who_to_send_to))) + do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str()); + } + else + { + // not ours, pass it on + Utils->DoOneToOne(prefix,"IDLE",params,who_to_send_to->server); + } + } + } + return true; + } + + bool Push(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 2) + return true; + + userrec* u = this->Instance->FindNick(params[0]); + + if (!u) + return true; + + if (IS_LOCAL(u)) + { + u->Write(params[1]); + } + else + { + // continue the raw onwards + params[1] = ":" + params[1]; + Utils->DoOneToOne(prefix,"PUSH",params,u->server); + } + return true; + } + + bool HandleSetTime(const std::string &prefix, std::deque ¶ms) + { + if (!params.size() || !Utils->EnableTimeSync) + return true; + + bool force = false; + + if ((params.size() == 2) && (params[1] == "FORCE")) + force = true; + + time_t rts = atoi(params[0].c_str()); + time_t us = Instance->Time(true); + + if (rts == us) + { + Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix); + } + else if (force || (rts < us)) + { + int old = Instance->SetTimeDelta(rts - us); + Instance->Log(DEBUG, "%s TS (diff %d) from %s applied (old delta was %d)", (force) ? "Forced" : "Lower", rts - us, prefix.c_str(), old); + + Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix); + } + else + { + Instance->Log(DEBUG, "Higher TS (diff %d) from %s overridden", us - rts, prefix.c_str()); + + std::deque oparams; + oparams.push_back(ConvToStr(us)); + + Utils->DoOneToMany(prefix, "TIMESET", oparams); + } + + return true; + } + + bool Time(const std::string &prefix, std::deque ¶ms) + { + // :source.server TIME remote.server sendernick + // :remote.server TIME source.server sendernick TS + if (params.size() == 2) + { + // someone querying our time? + if (this->Instance->Config->ServerName == params[0]) + { + userrec* u = this->Instance->FindNick(params[1]); + if (u) + { + params.push_back(ConvToStr(Instance->Time(false))); + params[0] = prefix; + Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]); + } + } + else + { + // not us, pass it on + userrec* u = this->Instance->FindNick(params[1]); + if (u) + Utils->DoOneToOne(prefix,"TIME",params,params[0]); + } + } + else if (params.size() == 3) + { + // a response to a previous TIME + userrec* u = this->Instance->FindNick(params[1]); + if ((u) && (IS_LOCAL(u))) + { + time_t rawtime = atol(params[2].c_str()); + struct tm * timeinfo; + timeinfo = localtime(&rawtime); + char tms[26]; + snprintf(tms,26,"%s",asctime(timeinfo)); + tms[24] = 0; + u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms); + } + else + { + if (u) + Utils->DoOneToOne(prefix,"TIME",params,u->server); + } + } + return true; + } + + bool LocalPing(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 1) + return true; + + if (params.size() == 1) + { + std::string stufftobounce = params[0]; + this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce); + return true; + } + else + { + std::string forwardto = params[1]; + if (forwardto == this->Instance->Config->ServerName) + { + // this is a ping for us, send back PONG to the requesting server + params[1] = params[0]; + params[0] = forwardto; + Utils->DoOneToOne(forwardto,"PONG",params,params[1]); + } + else + { + // not for us, pass it on :) + Utils->DoOneToOne(prefix,"PING",params,forwardto); + } + return true; + } + } + + bool RemoveStatus(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 1) + return true; + + chanrec* c = Instance->FindChan(params[0]); + + if (c) + { + irc::modestacker modestack(false); + CUList *ulist = c->GetUsers(); + const char* y[127]; + std::deque stackresult; + std::string x; + + for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) + { + std::string modesequence = Instance->Modes->ModeString(i->second, c); + if (modesequence.length()) + { + irc::spacesepstream sep(modesequence); + std::string modeletters = sep.GetToken(); + + while (!modeletters.empty()) + { + char mletter = *(modeletters.begin()); + modestack.Push(mletter,sep.GetToken()); + modeletters.erase(modeletters.begin()); + } + } + } + + while (modestack.GetStackedLine(stackresult)) + { + stackresult.push_front(ConvToStr(c->age)); + stackresult.push_front(c->name); + Utils->DoOneToMany(Instance->Config->ServerName, "FMODE", stackresult); + stackresult.erase(stackresult.begin() + 1); + for (size_t z = 0; z < stackresult.size(); z++) + { + y[z] = stackresult[z].c_str(); + } + userrec* n = new userrec(Instance); + n->SetFd(FD_MAGIC_NUMBER); + Instance->SendMode(y, stackresult.size(), n); + delete n; + } + } + return true; + } + + bool RemoteServer(const std::string &prefix, std::deque ¶ms) + { + if (params.size() < 4) + return false; + + std::string servername = params[0]; + std::string password = params[1]; + // hopcount is not used for a remote server, we calculate this ourselves + std::string description = params[3]; + TreeServer* ParentOfThis = Utils->FindServer(prefix); + + if (!ParentOfThis) + { + this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix); + return false; + } + TreeServer* CheckDupe = Utils->FindServer(servername); + if (CheckDupe) + { + this->WriteLine("ERROR :Server "+servername+" already exists!"); + this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists"); + return false; + } + TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL); + ParentOfThis->AddChild(Node); + params[3] = ":" + params[3]; + Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix); + this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")"); + return true; + } + + bool Outbound_Reply_Server(std::deque ¶ms) + { + if (params.size() < 4) + return false; + + irc::string servername = params[0].c_str(); + std::string sname = params[0]; + std::string password = params[1]; + int hops = atoi(params[2].c_str()); + + if (hops) + { + this->WriteLine("ERROR :Server too far away for authentication"); + this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication"); + return false; + } + std::string description = params[3]; + for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) + { + if ((x->Name == servername) && (x->RecvPass == password)) + { + TreeServer* CheckDupe = Utils->FindServer(sname); + if (CheckDupe) + { + this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!"); + this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName()); + return false; + } + // Begin the sync here. this kickstarts the + // other side, waiting in WAIT_AUTH_2 state, + // into starting their burst, as it shows + // that we're happy. + this->LinkState = CONNECTED; + // we should add the details of this server now + // to the servers tree, as a child of the root + // node. + TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this); + Utils->TreeRoot->AddChild(Node); + params[3] = ":" + params[3]; + Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname); + this->bursting = true; + this->DoBurst(Node); + return true; + } + } + this->WriteLine("ERROR :Invalid credentials"); + this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials"); + return false; + } + + bool Inbound_Server(std::deque ¶ms) + { + if (params.size() < 4) + return false; + + irc::string servername = params[0].c_str(); + std::string sname = params[0]; + std::string password = params[1]; + int hops = atoi(params[2].c_str()); + + if (hops) + { + this->WriteLine("ERROR :Server too far away for authentication"); + this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication"); + return false; + } + std::string description = params[3]; + for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) + { + if ((x->Name == servername) && (x->RecvPass == password)) + { + TreeServer* CheckDupe = Utils->FindServer(sname); + if (CheckDupe) + { + this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!"); + this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName()); + return false; + } + this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "" : this->GetIP())+"] ("+description+")"); + + if (this->Hook) + { + std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send(); + this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "" : this->GetIP())+"] using transport \2"+name+"\2"); + } + + this->InboundServerName = sname; + this->InboundDescription = description; + // this is good. Send our details: Our server name and description and hopcount of 0, + // along with the sendpass from this block. + this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc); + // move to the next state, we are now waiting for THEM. + this->LinkState = WAIT_AUTH_2; + return true; + } + } + this->WriteLine("ERROR :Invalid credentials"); + this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials"); + return false; + } + + void Split(const std::string &line, std::deque &n) + { + n.clear(); + irc::tokenstream tokens(line); + std::string param; + while ((param = tokens.GetToken()) != "") + n.push_back(param); + return; + } + + bool ProcessLine(std::string &line) + { + std::deque params; + irc::string command; + std::string prefix; + + line = line.substr(0, line.find_first_of("\r\n")); + + if (line.empty()) + return true; + + Instance->Log(DEBUG, "<- %s", line.c_str()); + + this->Split(line.c_str(),params); + + if ((params[0][0] == ':') && (params.size() > 1)) + { + prefix = params[0].substr(1); + params.pop_front(); + } + + command = params[0].c_str(); + params.pop_front(); + + switch (this->LinkState) + { + TreeServer* Node; + + case WAIT_AUTH_1: + // Waiting for SERVER command from remote server. Server initiating + // the connection sends the first SERVER command, listening server + // replies with theirs if its happy, then if the initiator is happy, + // it starts to send its net sync, which starts the merge, otherwise + // it sends an ERROR. + if (command == "PASS") + { + /* Silently ignored */ + } + else if (command == "SERVER") + { + return this->Inbound_Server(params); + } + else if (command == "ERROR") + { + return this->Error(params); + } + else if (command == "USER") + { + this->WriteLine("ERROR :Client connections to this port are prohibited."); + return false; + } + else if (command == "CAPAB") + { + return this->Capab(params); + } + else if ((command == "U") || (command == "S")) + { + this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!"); + return false; + } + else + { + std::string error("ERROR :Invalid command in negotiation phase: "); + error.append(command.c_str()); + this->WriteLine(error); + return false; + } + break; + case WAIT_AUTH_2: + // Waiting for start of other side's netmerge to say they liked our + // password. + if (command == "SERVER") + { + // cant do this, they sent it to us in the WAIT_AUTH_1 state! + // silently ignore. + return true; + } + else if ((command == "U") || (command == "S")) + { + this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!"); + return false; + } + else if (command == "BURST") + { + if (params.size() && Utils->EnableTimeSync) + { + /* If a time stamp is provided, apply synchronization */ + bool force = false; + time_t them = atoi(params[0].c_str()); + time_t us = Instance->Time(true); + int delta = them - us; + + if ((params.size() == 2) && (params[1] == "FORCE")) + force = true; + + if ((delta < -600) || (delta > 600)) + { + this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Your clocks are out by %d seconds (this is more than ten minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta)); + this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!"); + return false; + } + + if (force || (us > them)) + { + this->Instance->SetTimeDelta(them - us); + // Send this new timestamp to any other servers + Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params); + } + else + { + // Override the timestamp + this->WriteLine(":" + Utils->TreeRoot->GetName() + " TIMESET " + ConvToStr(us)); + } + } + this->LinkState = CONNECTED; + Node = new TreeServer(this->Utils,this->Instance,InboundServerName,InboundDescription,Utils->TreeRoot,this); + Utils->TreeRoot->AddChild(Node); + params.clear(); + params.push_back(InboundServerName); + params.push_back("*"); + params.push_back("1"); + params.push_back(":"+InboundDescription); + Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName); + this->bursting = true; + this->DoBurst(Node); + } + else if (command == "ERROR") + { + return this->Error(params); + } + else if (command == "CAPAB") + { + return this->Capab(params); + } + + break; + case LISTENER: + this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!"); + return false; + break; + case CONNECTING: + if (command == "SERVER") + { + // another server we connected to, which was in WAIT_AUTH_1 state, + // has just sent us their credentials. If we get this far, theyre + // happy with OUR credentials, and they are now in WAIT_AUTH_2 state. + // if we're happy with this, we should send our netburst which + // kickstarts the merge. + return this->Outbound_Reply_Server(params); + } + else if (command == "ERROR") + { + return this->Error(params); + } + break; + case CONNECTED: + // This is the 'authenticated' state, when all passwords + // have been exchanged and anything past this point is taken + // as gospel. + + if (prefix != "") + { + std::string direction = prefix; + userrec* t = this->Instance->FindNick(prefix); + if (t) + { + direction = t->server; + } + TreeServer* route_back_again = Utils->BestRouteTo(direction); + if ((!route_back_again) || (route_back_again->GetSocket() != this)) + { + if (route_back_again) + Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str()); + return true; + } + + /* Fix by brain: + * When there is activity on the socket, reset the ping counter so + * that we're not wasting bandwidth pinging an active server. + */ + route_back_again->SetNextPingTime(time(NULL) + 60); + route_back_again->SetPingFlag(); + } + + if (command == "SVSMODE") + { + /* Services expects us to implement + * SVSMODE. In inspircd its the same as + * MODE anyway. + */ + command = "MODE"; + } + std::string target = ""; + /* Yes, know, this is a mess. Its reasonably fast though as we're + * working with std::string here. + */ + if ((command == "NICK") && (params.size() > 1)) + { + return this->IntroduceClient(prefix,params); + } + else if (command == "FJOIN") + { + return this->ForceJoin(prefix,params); + } + else if (command == "STATS") + { + return this->Stats(prefix, params); + } + else if (command == "MOTD") + { + return this->Motd(prefix, params); + } + else if (command == "ADMIN") + { + return this->Admin(prefix, params); + } + else if (command == "SERVER") + { + return this->RemoteServer(prefix,params); + } + else if (command == "ERROR") + { + return this->Error(params); + } + else if (command == "OPERTYPE") + { + return this->OperType(prefix,params); + } + else if (command == "FMODE") + { + return this->ForceMode(prefix,params); + } + else if (command == "KILL") + { + return this->RemoteKill(prefix,params); + } + else if (command == "FTOPIC") + { + return this->ForceTopic(prefix,params); + } + else if (command == "REHASH") + { + return this->RemoteRehash(prefix,params); + } + else if (command == "METADATA") + { + return this->MetaData(prefix,params); + } + else if (command == "REMSTATUS") + { + return this->RemoveStatus(prefix,params); + } + else if (command == "PING") + { + /* + * We just got a ping from a server that's bursting. + * This can't be right, so set them to not bursting, and + * apply their lines. + */ + if (this->bursting) + { + this->bursting = false; + Instance->XLines->apply_lines(Utils->lines_to_apply); + Utils->lines_to_apply = 0; + } + if (prefix == "") + { + prefix = this->GetName(); + } + return this->LocalPing(prefix,params); + } + else if (command == "PONG") + { + /* + * We just got a pong from a server that's bursting. + * This can't be right, so set them to not bursting, and + * apply their lines. + */ + if (this->bursting) + { + this->bursting = false; + Instance->XLines->apply_lines(Utils->lines_to_apply); + Utils->lines_to_apply = 0; + } + if (prefix == "") + { + prefix = this->GetName(); + } + return this->LocalPong(prefix,params); + } + else if (command == "VERSION") + { + return this->ServerVersion(prefix,params); + } + else if (command == "FHOST") + { + return this->ChangeHost(prefix,params); + } + else if (command == "FNAME") + { + return this->ChangeName(prefix,params); + } + else if (command == "ADDLINE") + { + return this->AddLine(prefix,params); + } + else if (command == "SVSNICK") + { + if (prefix == "") + { + prefix = this->GetName(); + } + return this->ForceNick(prefix,params); + } + else if (command == "RSQUIT") + { + return this->RemoteSquit(prefix, params); + } + else if (command == "IDLE") + { + return this->Whois(prefix,params); + } + else if (command == "PUSH") + { + return this->Push(prefix,params); + } + else if (command == "TIMESET") + { + return this->HandleSetTime(prefix, params); + } + else if (command == "TIME") + { + return this->Time(prefix,params); + } + else if ((command == "KICK") && (Utils->IsServer(prefix))) + { + std::string sourceserv = this->myhost; + if (params.size() == 3) + { + userrec* user = this->Instance->FindNick(params[1]); + chanrec* chan = this->Instance->FindChan(params[0]); + if (user && chan) + { + if (!chan->ServerKickUser(user, params[2].c_str(), false)) + /* Yikes, the channels gone! */ + delete chan; + } + } + if (this->InboundServerName != "") + { + sourceserv = this->InboundServerName; + } + return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params); + } + else if (command == "SVSJOIN") + { + if (prefix == "") + { + prefix = this->GetName(); + } + return this->ServiceJoin(prefix,params); + } + else if (command == "SQUIT") + { + if (params.size() == 2) + { + this->Squit(Utils->FindServer(params[0]),params[1]); + } + return true; + } + else if (command == "OPERNOTICE") + { + std::string sourceserv = this->myhost; + + if (this->InboundServerName != "") + sourceserv = this->InboundServerName; + + if (params.size() >= 1) + Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]); + + return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params); + } + else if (command == "MODENOTICE") + { + std::string sourceserv = this->myhost; + if (this->InboundServerName != "") + sourceserv = this->InboundServerName; + if (params.size() >= 2) + { + Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str()); + } + + return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params); + } + else if (command == "SNONOTICE") + { + std::string sourceserv = this->myhost; + if (this->InboundServerName != "") + sourceserv = this->InboundServerName; + if (params.size() >= 2) + { + Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]); + } + + return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params); + } + else if (command == "ENDBURST") + { + this->bursting = false; + Instance->XLines->apply_lines(Utils->lines_to_apply); + Utils->lines_to_apply = 0; + std::string sourceserv = this->myhost; + if (this->InboundServerName != "") + { + sourceserv = this->InboundServerName; + } + this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str()); + + Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server"); + rmode.Send(Instance); + + return true; + } + else + { + // not a special inter-server command. + // Emulate the actual user doing the command, + // this saves us having a huge ugly parser. + userrec* who = this->Instance->FindNick(prefix); + std::string sourceserv = this->myhost; + if (this->InboundServerName != "") + { + sourceserv = this->InboundServerName; + } + if ((!who) && (command == "MODE")) + { + if (Utils->IsServer(prefix)) + { + const char* modelist[127]; + for (size_t i = 0; i < params.size(); i++) + modelist[i] = params[i].c_str(); + + userrec* fake = new userrec(Instance); + fake->SetFd(FD_MAGIC_NUMBER); + + this->Instance->SendMode(modelist, params.size(), fake); + + delete fake; + + /* Hot potato! pass it on! */ + return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params); + } + } + if (who) + { + if ((command == "NICK") && (params.size() > 0)) + { + /* On nick messages, check that the nick doesnt + * already exist here. If it does, kill their copy, + * and our copy. + */ + userrec* x = this->Instance->FindNick(params[0]); + if ((x) && (x != who)) + { + std::deque p; + p.push_back(params[0]); + p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")"); + Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p); + p.clear(); + p.push_back(prefix); + p.push_back("Nickname collision"); + Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p); + userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")"); + userrec* y = this->Instance->FindNick(prefix); + if (y) + { + userrec::QuitUser(this->Instance,y,"Nickname collision"); + } + return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params); + } + } + // its a user + target = who->server; + const char* strparams[127]; + for (unsigned int q = 0; q < params.size(); q++) + { + strparams[q] = params[q].c_str(); + } + switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who)) + { + case CMD_INVALID: + this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules"); + return false; + break; + case CMD_FAILURE: + return true; + break; + default: + /* CMD_SUCCESS and CMD_USER_DELETED fall through here */ + break; + } + } + else + { + // its not a user. Its either a server, or somethings screwed up. + if (Utils->IsServer(prefix)) + target = this->Instance->Config->ServerName; + else + return true; + } + return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params); + + } + return true; + break; + } + return true; + } + + virtual std::string GetName() + { + std::string sourceserv = this->myhost; + if (this->InboundServerName != "") + { + sourceserv = this->InboundServerName; + } + return sourceserv; + } + + virtual void OnTimeout() + { + if (this->LinkState == CONNECTING) + { + this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out."); + Link* MyLink = Utils->FindLink(myhost); + if (MyLink) + Utils->DoFailOver(MyLink); + } + } + + virtual void OnClose() + { + // Connection closed. + // If the connection is fully up (state CONNECTED) + // then propogate a netsplit to all peers. + std::string quitserver = this->myhost; + if (this->InboundServerName != "") + { + quitserver = this->InboundServerName; + } + TreeServer* s = Utils->FindServer(quitserver); + if (s) + { + Squit(s,"Remote host closed the connection"); + } + + if (quitserver != "") + this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str()); + } + + virtual int OnIncomingConnection(int newsock, char* ip) + { + /* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port, + * or discovering if this port is the server port, we don't allow connections from any + * IPs for which we don't have a link block. + */ + bool found = false; + + found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end()); + if (!found) + { + for (vector::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++) + if (irc::sockets::MatchCIDR(ip, (*i).c_str())) + found = true; + + if (!found) + { + this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip); + close(newsock); + return false; + } + } + + TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook); + + s = s; /* Whinge whinge whinge, thats all GCC ever does. */ + return true; + } +}; + +/** This class is used to resolve server hostnames during /connect and autoconnect. + * As of 1.1, the resolver system is seperated out from InspSocket, so we must do this + * resolver step first ourselves if we need it. This is totally nonblocking, and will + * callback to OnLookupComplete or OnError when completed. Once it has completed we + * will have an IP address which we can then use to continue our connection. + */ +class ServernameResolver : public Resolver +{ + private: + /** A copy of the Link tag info for what we're connecting to. + * We take a copy, rather than using a pointer, just in case the + * admin takes the tag away and rehashes while the domain is resolving. + */ + Link MyLink; + SpanningTreeUtilities* Utils; + public: + ServernameResolver(Module* me, SpanningTreeUtilities* Util, InspIRCd* Instance, const std::string &hostname, Link x, bool &cached) : Resolver(Instance, hostname, DNS_QUERY_FORWARD, cached, me), MyLink(x), Utils(Util) + { + /* Nothing in here, folks */ + } + + void OnLookupComplete(const std::string &result, unsigned int ttl, bool cached) + { + /* Initiate the connection, now that we have an IP to use. + * Passing a hostname directly to InspSocket causes it to + * just bail and set its FD to -1. + */ + TreeServer* CheckDupe = Utils->FindServer(MyLink.Name.c_str()); + if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */ + { + + if ((!MyLink.Hook.empty()) && (Utils->hooks.find(MyLink.Hook.c_str()) == Utils->hooks.end())) + return; + + TreeSocket* newsocket = new TreeSocket(this->Utils, ServerInstance, result,MyLink.Port,false,MyLink.Timeout ? MyLink.Timeout : 10,MyLink.Name.c_str(), + MyLink.Hook.empty() ? NULL : Utils->hooks[MyLink.Hook.c_str()]); + if (newsocket->GetFd() > -1) + { + /* We're all OK */ + } + else + { + /* Something barfed, show the opers */ + ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno)); + delete newsocket; + Utils->DoFailOver(&MyLink); + } + } + } + + void OnError(ResolverError e, const std::string &errormessage) + { + /* Ooops! */ + ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s",MyLink.Name.c_str(),errormessage.c_str()); + Utils->DoFailOver(&MyLink); + } +}; + +/** Handle resolving of server IPs for the cache + */ +class SecurityIPResolver : public Resolver +{ + private: + Link MyLink; + SpanningTreeUtilities* Utils; + public: + SecurityIPResolver(Module* me, SpanningTreeUtilities* U, InspIRCd* Instance, const std::string &hostname, Link x, bool &cached) : Resolver(Instance, hostname, DNS_QUERY_FORWARD, cached, me), MyLink(x), Utils(U) + { + } + + void OnLookupComplete(const std::string &result, unsigned int ttl, bool cached) + { + Utils->ValidIPs.push_back(result); + } + + void OnError(ResolverError e, const std::string &errormessage) + { + ServerInstance->Log(DEFAULT,"Could not resolve IP associated with Link '%s': %s",MyLink.Name.c_str(),errormessage.c_str()); + } +}; + +SpanningTreeUtilities::SpanningTreeUtilities(InspIRCd* Instance, ModuleSpanningTree* C) : ServerInstance(Instance), Creator(C) +{ + Bindings.clear(); + + lines_to_apply = 0; + + this->TreeRoot = new TreeServer(this, ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc); + + modulelist* ml = ServerInstance->FindInterface("InspSocketHook"); + + /* Did we find any modules? */ + if (ml) + { + /* Yes, enumerate them all to find out the hook name */ + for (modulelist::iterator m = ml->begin(); m != ml->end(); m++) + { + /* Make a request to it for its name, its implementing + * InspSocketHook so we know its safe to do this + */ + std::string name = InspSocketNameRequest((Module*)Creator, *m).Send(); + /* Build a map of them */ + hooks[name.c_str()] = *m; + hooknames.push_back(name); + } + } + + this->ReadConfiguration(true); +} + +SpanningTreeUtilities::~SpanningTreeUtilities() +{ + for (unsigned int i = 0; i < Bindings.size(); i++) + { + ServerInstance->SE->DelFd(Bindings[i]); + Bindings[i]->Close(); + DELETE(Bindings[i]); + } + while (TreeRoot->ChildCount()) + { + TreeServer* child_server = TreeRoot->GetChild(0); + if (child_server) + { + TreeSocket* sock = child_server->GetSocket(); + ServerInstance->SE->DelFd(sock); + sock->Close(); + DELETE(sock); + } + } + delete TreeRoot; +} + +void SpanningTreeUtilities::AddThisServer(TreeServer* server, TreeServerList &list) +{ + if (list.find(server) == list.end()) + list[server] = server; +} + +/** returns a list of DIRECT servernames for a specific channel */ +void SpanningTreeUtilities::GetListOfServersForChannel(chanrec* c, TreeServerList &list, char status, const CUList &exempt_list) +{ + CUList *ulist; + switch (status) + { + case '@': + ulist = c->GetOppedUsers(); + break; + case '%': + ulist = c->GetHalfoppedUsers(); + break; + case '+': + ulist = c->GetVoicedUsers(); + break; + default: + ulist = c->GetUsers(); + break; + } + for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) + { + if ((i->second->GetFd() < 0) && (exempt_list.find(i->second) == exempt_list.end())) + { + TreeServer* best = this->BestRouteTo(i->second->server); + if (best) + AddThisServer(best,list); + } + } + return; +} + +bool SpanningTreeUtilities::DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, std::deque ¶ms) +{ + char pfx = 0; + TreeServer* omitroute = this->BestRouteTo(omit); + if ((command == "NOTICE") || (command == "PRIVMSG")) + { + if (params.size() >= 2) + { + /* Prefixes */ + if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+')) + { + pfx = params[0][0]; + params[0] = params[0].substr(1, params[0].length()-1); + } + if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$')) + { + // special routing for private messages/notices + userrec* d = ServerInstance->FindNick(params[0]); + if (d) + { + std::deque par; + par.push_back(params[0]); + par.push_back(":"+params[1]); + this->DoOneToOne(prefix,command.c_str(),par,d->server); + return true; + } + } + else if (*(params[0].c_str()) == '$') + { + std::deque par; + par.push_back(params[0]); + par.push_back(":"+params[1]); + this->DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName()); + return true; + } + else + { + chanrec* c = ServerInstance->FindChan(params[0]); + userrec* u = ServerInstance->FindNick(prefix); + if (c && u) + { + CUList elist; + TreeServerList list; + FOREACH_MOD(I_OnBuildExemptList, OnBuildExemptList((command == "PRIVMSG" ? MSG_PRIVMSG : MSG_NOTICE), c, u, pfx, elist)); + GetListOfServersForChannel(c,list,pfx,elist); + + for (TreeServerList::iterator i = list.begin(); i != list.end(); i++) + { + TreeSocket* Sock = i->second->GetSocket(); + if ((Sock) && (i->second->GetName() != omit) && (omitroute != i->second)) + { + Sock->WriteLine(data); + } + } + return true; + } + } + } + } + unsigned int items =this->TreeRoot->ChildCount(); + for (unsigned int x = 0; x < items; x++) + { + TreeServer* Route = this->TreeRoot->GetChild(x); + if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route)) + { + TreeSocket* Sock = Route->GetSocket(); + if (Sock) + Sock->WriteLine(data); + } + } + return true; +} + +bool SpanningTreeUtilities::DoOneToAllButSender(const std::string &prefix, const std::string &command, std::deque ¶ms, std::string omit) +{ + TreeServer* omitroute = this->BestRouteTo(omit); + std::string FullLine = ":" + prefix + " " + command; + unsigned int words = params.size(); + for (unsigned int x = 0; x < words; x++) + { + FullLine = FullLine + " " + params[x]; + } + unsigned int items = this->TreeRoot->ChildCount(); + for (unsigned int x = 0; x < items; x++) + { + TreeServer* Route = this->TreeRoot->GetChild(x); + // Send the line IF: + // The route has a socket (its a direct connection) + // The route isnt the one to be omitted + // The route isnt the path to the one to be omitted + if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route)) + { + TreeSocket* Sock = Route->GetSocket(); + if (Sock) + Sock->WriteLine(FullLine); + } + } + return true; +} + +bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, std::deque ¶ms) +{ + std::string FullLine = ":" + prefix + " " + command; + unsigned int words = params.size(); + for (unsigned int x = 0; x < words; x++) + { + FullLine = FullLine + " " + params[x]; + } + unsigned int items = this->TreeRoot->ChildCount(); + for (unsigned int x = 0; x < items; x++) + { + TreeServer* Route = this->TreeRoot->GetChild(x); + if (Route && Route->GetSocket()) + { + TreeSocket* Sock = Route->GetSocket(); + if (Sock) + Sock->WriteLine(FullLine); + } + } + return true; +} + +bool SpanningTreeUtilities::DoOneToMany(const char* prefix, const char* command, std::deque ¶ms) +{ + std::string spfx = prefix; + std::string scmd = command; + return this->DoOneToMany(spfx, scmd, params); +} + +bool SpanningTreeUtilities::DoOneToAllButSender(const char* prefix, const char* command, std::deque ¶ms, std::string omit) +{ + std::string spfx = prefix; + std::string scmd = command; + return this->DoOneToAllButSender(spfx, scmd, params, omit); +} + +bool SpanningTreeUtilities::DoOneToOne(const std::string &prefix, const std::string &command, std::deque ¶ms, std::string target) +{ + TreeServer* Route = this->BestRouteTo(target); + if (Route) + { + std::string FullLine = ":" + prefix + " " + command; + unsigned int words = params.size(); + for (unsigned int x = 0; x < words; x++) + { + FullLine = FullLine + " " + params[x]; + } + if (Route && Route->GetSocket()) + { + TreeSocket* Sock = Route->GetSocket(); + if (Sock) + Sock->WriteLine(FullLine); + } + return true; + } + else + { + return false; + } +} + +void SpanningTreeUtilities::ReadConfiguration(bool rebind) +{ + ConfigReader* Conf = new ConfigReader(ServerInstance); + if (rebind) + { + for (int j =0; j < Conf->Enumerate("bind"); j++) + { + std::string Type = Conf->ReadValue("bind","type",j); + std::string IP = Conf->ReadValue("bind","address",j); + std::string Port = Conf->ReadValue("bind","port",j); + std::string transport = Conf->ReadValue("bind","transport",j); + if (Type == "servers") + { + irc::portparser portrange(Port, false); + int portno = -1; + while ((portno = portrange.GetToken())) + { + if (IP == "*") + IP = ""; + + if ((!transport.empty()) && (hooks.find(transport.c_str()) == hooks.end())) + { + ServerInstance->Log(DEFAULT,"m_spanningtree: WARNING: Can't find transport type '%s' for port %s:%s - maybe you forgot to load it BEFORE m_spanningtree in your config file? - Skipping this port binding", + transport.c_str(), IP.c_str(), Port.c_str()); + break; + } + + TreeSocket* listener = new TreeSocket(this, ServerInstance, IP.c_str(), portno, true, 10, transport.empty() ? NULL : hooks[transport.c_str()]); + if (listener->GetState() == I_LISTENING) + { + ServerInstance->Log(DEFAULT,"m_spanningtree: Binding server port %s:%d successful!", IP.c_str(), portno); + Bindings.push_back(listener); + } + else + { + ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %s:%d",IP.c_str(), portno); + listener->Close(); + DELETE(listener); + } + } + } + } + } + FlatLinks = Conf->ReadFlag("options","flatlinks",0); + HideULines = Conf->ReadFlag("options","hideulines",0); + AnnounceTSChange = Conf->ReadFlag("options","announcets",0); + EnableTimeSync = !(Conf->ReadFlag("options","notimesync",0)); + LinkBlocks.clear(); + ValidIPs.clear(); + for (int j =0; j < Conf->Enumerate("link"); j++) + { + Link L; + std::string Allow = Conf->ReadValue("link","allowmask",j); + L.Name = (Conf->ReadValue("link","name",j)).c_str(); + L.IPAddr = Conf->ReadValue("link","ipaddr",j); + L.FailOver = Conf->ReadValue("link","failover",j).c_str(); + L.Port = Conf->ReadInteger("link","port",j,true); + L.SendPass = Conf->ReadValue("link","sendpass",j); + L.RecvPass = Conf->ReadValue("link","recvpass",j); + L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true); + L.HiddenFromStats = Conf->ReadFlag("link","hidden",j); + L.Timeout = Conf->ReadInteger("link","timeout",j,true); + L.Hook = Conf->ReadValue("link", "transport", j); + + if ((!L.Hook.empty()) && (hooks.find(L.Hook.c_str()) == hooks.end())) + { + ServerInstance->Log(DEFAULT,"m_spanningtree: WARNING: Can't find transport type '%s' for link '%s' - maybe you forgot to load it BEFORE m_spanningtree in your config file? Skipping tag completely.", + L.Hook.c_str(), L.Name.c_str()); + continue; + + } + + L.NextConnectTime = time(NULL) + L.AutoConnect; + /* Bugfix by brain, do not allow people to enter bad configurations */ + if (L.Name != ServerInstance->Config->ServerName) + { + if ((L.IPAddr != "") && (L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port)) + { + ValidIPs.push_back(L.IPAddr); + + if (Allow.length()) + ValidIPs.push_back(Allow); + + /* Needs resolving */ + insp_inaddr binip; + if (insp_aton(L.IPAddr.c_str(), &binip) < 1) + { + try + { + bool cached; + SecurityIPResolver* sr = new SecurityIPResolver((Module*)this->Creator, this, ServerInstance, L.IPAddr, L, cached); + ServerInstance->AddResolver(sr, cached); + } + catch (ModuleException& e) + { + } + } + + LinkBlocks.push_back(L); + } + else + { + if (L.IPAddr == "") + { + ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str()); + } + else if (L.RecvPass == "") + { + ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str()); + } + else if (L.SendPass == "") + { + ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str()); + } + else if (L.Name == "") + { + ServerInstance->Log(DEFAULT,"Invalid configuration, link tag without a name!"); + } + else if (!L.Port) + { + ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str()); + } + } + } + else + { + ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', link tag has the same server name as the local server!",L.Name.c_str()); + } + } + DELETE(Conf); +} + +/** To create a timer which recurs every second, we inherit from InspTimer. + * InspTimer is only one-shot however, so at the end of each Tick() we simply + * insert another of ourselves into the pending queue :) + */ +class TimeSyncTimer : public InspTimer +{ + private: + InspIRCd *Instance; + ModuleSpanningTree *Module; + public: + TimeSyncTimer(InspIRCd *Instance, ModuleSpanningTree *Mod); + virtual void Tick(time_t TIME); +}; + +HandshakeTimer::HandshakeTimer(InspIRCd* Inst, TreeSocket* s, Link* l, SpanningTreeUtilities* u) : InspTimer(1, time(NULL)), Instance(Inst), sock(s), lnk(l), Utils(u) +{ + thefd = sock->GetFd(); +} + +void HandshakeTimer::Tick(time_t TIME) +{ + if (Instance->SE->GetRef(thefd) == sock) + { + if (sock->GetHook() && InspSocketHSCompleteRequest(sock, (Module*)Utils->Creator, sock->GetHook()).Send()) + { + InspSocketAttachCertRequest(sock, (Module*)Utils->Creator, sock->GetHook()).Send(); + sock->SendCapabilities(); + if (sock->GetLinkState() == CONNECTING) + { + sock->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+lnk->SendPass+" 0 :"+this->Instance->Config->ServerDesc); + } + } + else + { + Instance->Timers->AddTimer(new HandshakeTimer(Instance, sock, lnk, Utils)); + } + } +} + +class ModuleSpanningTree : public Module +{ + int line; + int NumServers; + unsigned int max_local; + unsigned int max_global; + cmd_rconnect* command_rconnect; + SpanningTreeUtilities* Utils; + + public: + TimeSyncTimer *SyncTimer; + + ModuleSpanningTree(InspIRCd* Me) + : Module::Module(Me), max_local(0), max_global(0) + { + ServerInstance->UseInterface("InspSocketHook"); + + Utils = new SpanningTreeUtilities(Me, this); + + command_rconnect = new cmd_rconnect(ServerInstance, this, Utils); + ServerInstance->AddCommand(command_rconnect); + + if (Utils->EnableTimeSync) + { + SyncTimer = new TimeSyncTimer(ServerInstance, this); + ServerInstance->Timers->AddTimer(SyncTimer); + } + else + SyncTimer = NULL; + } + + void ShowLinks(TreeServer* Current, userrec* user, int hops) + { + std::string Parent = Utils->TreeRoot->GetName(); + if (Current->GetParent()) + { + Parent = Current->GetParent()->GetName(); + } + for (unsigned int q = 0; q < Current->ChildCount(); q++) + { + if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str()))) + { + if (*user->oper) + { + ShowLinks(Current->GetChild(q),user,hops+1); + } + } + else + { + ShowLinks(Current->GetChild(q),user,hops+1); + } + } + /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */ + if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!*user->oper)) + return; + user->WriteServ("364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),(Utils->FlatLinks && (!*user->oper)) ? ServerInstance->Config->ServerName : Parent.c_str(),(Utils->FlatLinks && (!*user->oper)) ? 0 : hops,Current->GetDesc().c_str()); + } + + int CountLocalServs() + { + return Utils->TreeRoot->ChildCount(); + } + + int CountServs() + { + return Utils->serverlist.size(); + } + + void HandleLinks(const char** parameters, int pcnt, userrec* user) + { + ShowLinks(Utils->TreeRoot,user,0); + user->WriteServ("365 %s * :End of /LINKS list.",user->nick); + return; + } + + void HandleLusers(const char** parameters, int pcnt, userrec* user) + { + unsigned int n_users = ServerInstance->UserCount(); + + /* Only update these when someone wants to see them, more efficient */ + if ((unsigned int)ServerInstance->LocalUserCount() > max_local) + max_local = ServerInstance->LocalUserCount(); + if (n_users > max_global) + max_global = n_users; + + unsigned int ulined_count = 0; + unsigned int ulined_local_count = 0; + + /* If ulined are hidden and we're not an oper, count the number of ulined servers hidden, + * locally and globally (locally means directly connected to us) + */ + if ((Utils->HideULines) && (!*user->oper)) + { + for (server_hash::iterator q = Utils->serverlist.begin(); q != Utils->serverlist.end(); q++) + { + if (ServerInstance->ULine(q->second->GetName().c_str())) + { + ulined_count++; + if (q->second->GetParent() == Utils->TreeRoot) + ulined_local_count++; + } + } + } + + user->WriteServ("251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-ServerInstance->InvisibleUserCount(),ServerInstance->InvisibleUserCount(),ulined_count ? this->CountServs() - ulined_count : this->CountServs()); + if (ServerInstance->OperCount()) + user->WriteServ("252 %s %d :operator(s) online",user->nick,ServerInstance->OperCount()); + if (ServerInstance->UnregisteredUserCount()) + user->WriteServ("253 %s %d :unknown connections",user->nick,ServerInstance->UnregisteredUserCount()); + if (ServerInstance->ChannelCount()) + user->WriteServ("254 %s %d :channels formed",user->nick,ServerInstance->ChannelCount()); + user->WriteServ("254 %s :I have %d clients and %d servers",user->nick,ServerInstance->LocalUserCount(),ulined_local_count ? this->CountLocalServs() - ulined_local_count : this->CountLocalServs()); + user->WriteServ("265 %s :Current Local Users: %d Max: %d",user->nick,ServerInstance->LocalUserCount(),max_local); + user->WriteServ("266 %s :Current Global Users: %d Max: %d",user->nick,n_users,max_global); + return; + } + + // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS. + + void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers) + { + if (line < 128) + { + for (int t = 0; t < depth; t++) + { + matrix[line][t] = ' '; + } + + // For Aligning, we need to work out exactly how deep this thing is, and produce + // a 'Spacer' String to compensate. + char spacer[40]; + + memset(spacer,' ',40); + if ((40 - Current->GetName().length() - depth) > 1) { + spacer[40 - Current->GetName().length() - depth] = '\0'; + } + else + { + spacer[5] = '\0'; + } + + float percent; + char text[80]; + if (ServerInstance->clientlist->size() == 0) { + // If there are no users, WHO THE HELL DID THE /MAP?!?!?! + percent = 0; + } + else + { + percent = ((float)Current->GetUserCount() / (float)ServerInstance->clientlist->size()) * 100; + } + snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent); + totusers += Current->GetUserCount(); + totservers++; + strlcpy(&matrix[line][depth],text,80); + line++; + for (unsigned int q = 0; q < Current->ChildCount(); q++) + { + if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str()))) + { + if (*user->oper) + { + ShowMap(Current->GetChild(q),user,(Utils->FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers); + } + } + else + { + ShowMap(Current->GetChild(q),user,(Utils->FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers); + } + } + } + } + + int HandleMotd(const char** parameters, int pcnt, userrec* user) + { + if (pcnt > 0) + { + /* Remote MOTD, the server is within the 1st parameter */ + std::deque params; + params.push_back(parameters[0]); + + /* Send it out remotely, generate no reply yet */ + TreeServer* s = Utils->FindServerMask(parameters[0]); + if (s) + { + Utils->DoOneToOne(user->nick, "MOTD", params, s->GetName()); + } + else + { + user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]); + } + return 1; + } + return 0; + } + + int HandleAdmin(const char** parameters, int pcnt, userrec* user) + { + if (pcnt > 0) + { + /* Remote ADMIN, the server is within the 1st parameter */ + std::deque params; + params.push_back(parameters[0]); + + /* Send it out remotely, generate no reply yet */ + TreeServer* s = Utils->FindServerMask(parameters[0]); + if (s) + { + Utils->DoOneToOne(user->nick, "ADMIN", params, s->GetName()); + } + else + { + user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]); + } + return 1; + } + return 0; + } + + int HandleStats(const char** parameters, int pcnt, userrec* user) + { + if (pcnt > 1) + { + /* Remote STATS, the server is within the 2nd parameter */ + std::deque params; + params.push_back(parameters[0]); + params.push_back(parameters[1]); + /* Send it out remotely, generate no reply yet */ + TreeServer* s = Utils->FindServerMask(parameters[1]); + if (s) + { + params[1] = s->GetName(); + Utils->DoOneToOne(user->nick, "STATS", params, s->GetName()); + } + else + { + user->WriteServ( "402 %s %s :No such server", user->nick, parameters[0]); + } + return 1; + } + return 0; + } + + // Ok, prepare to be confused. + // After much mulling over how to approach this, it struck me that + // the 'usual' way of doing a /MAP isnt the best way. Instead of + // keeping track of a ton of ascii characters, and line by line + // under recursion working out where to place them using multiplications + // and divisons, we instead render the map onto a backplane of characters + // (a character matrix), then draw the branches as a series of "L" shapes + // from the nodes. This is not only friendlier on CPU it uses less stack. + + void HandleMap(const char** parameters, int pcnt, userrec* user) + { + // This array represents a virtual screen which we will + // "scratch" draw to, as the console device of an irc + // client does not provide for a proper terminal. + float totusers = 0; + float totservers = 0; + char matrix[128][80]; + for (unsigned int t = 0; t < 128; t++) + { + matrix[t][0] = '\0'; + } + line = 0; + // The only recursive bit is called here. + ShowMap(Utils->TreeRoot,user,0,matrix,totusers,totservers); + // Process each line one by one. The algorithm has a limit of + // 128 servers (which is far more than a spanning tree should have + // anyway, so we're ok). This limit can be raised simply by making + // the character matrix deeper, 128 rows taking 10k of memory. + for (int l = 1; l < line; l++) + { + // scan across the line looking for the start of the + // servername (the recursive part of the algorithm has placed + // the servers at indented positions depending on what they + // are related to) + int first_nonspace = 0; + while (matrix[l][first_nonspace] == ' ') + { + first_nonspace++; + } + first_nonspace--; + // Draw the `- (corner) section: this may be overwritten by + // another L shape passing along the same vertical pane, becoming + // a |- (branch) section instead. + matrix[l][first_nonspace] = '-'; + matrix[l][first_nonspace-1] = '`'; + int l2 = l - 1; + // Draw upwards until we hit the parent server, causing possibly + // other corners (`-) to become branches (|-) + while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`')) + { + matrix[l2][first_nonspace-1] = '|'; + l2--; + } + } + // dump the whole lot to the user. This is the easy bit, honest. + for (int t = 0; t < line; t++) + { + user->WriteServ("006 %s :%s",user->nick,&matrix[t][0]); + } + float avg_users = totusers / totservers; + user->WriteServ("270 %s :%.0f server%s and %.0f user%s, average %.2f users per server",user->nick,totservers,(totservers > 1 ? "s" : ""),totusers,(totusers > 1 ? "s" : ""),avg_users); + user->WriteServ("007 %s :End of /MAP",user->nick); + return; + } + + int HandleSquit(const char** parameters, int pcnt, userrec* user) + { + TreeServer* s = Utils->FindServerMask(parameters[0]); + if (s) + { + if (s == Utils->TreeRoot) + { + user->WriteServ("NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]); + return 1; + } + TreeSocket* sock = s->GetSocket(); + if (sock) + { + ServerInstance->SNO->WriteToSnoMask('l',"SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick); + sock->Squit(s,std::string("Server quit by ") + user->GetFullRealHost()); + ServerInstance->SE->DelFd(sock); + sock->Close(); + delete sock; + } + else + { + /* route it */ + std::deque params; + params.push_back(parameters[0]); + params.push_back(std::string(":Server quit by ") + user->GetFullRealHost()); + Utils->DoOneToOne(user->nick, "RSQUIT", params, parameters[0]); + } + } + else + { + user->WriteServ("NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]); + } + return 1; + } + + int HandleTime(const char** parameters, int pcnt, userrec* user) + { + if ((IS_LOCAL(user)) && (pcnt)) + { + TreeServer* found = Utils->FindServerMask(parameters[0]); + if (found) + { + // we dont' override for local server + if (found == Utils->TreeRoot) + return 0; + + std::deque params; + params.push_back(found->GetName()); + params.push_back(user->nick); + Utils->DoOneToOne(ServerInstance->Config->ServerName,"TIME",params,found->GetName()); + } + else + { + user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]); + } + } + return 1; + } + + int HandleRemoteWhois(const char** parameters, int pcnt, userrec* user) + { + if ((IS_LOCAL(user)) && (pcnt > 1)) + { + userrec* remote = ServerInstance->FindNick(parameters[1]); + if ((remote) && (remote->GetFd() < 0)) + { + std::deque params; + params.push_back(parameters[1]); + Utils->DoOneToOne(user->nick,"IDLE",params,remote->server); + return 1; + } + else if (!remote) + { + user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[1]); + user->WriteServ("318 %s %s :End of /WHOIS list.",user->nick, parameters[1]); + return 1; + } + } + return 0; + } + + void DoPingChecks(time_t curtime) + { + for (unsigned int j = 0; j < Utils->TreeRoot->ChildCount(); j++) + { + TreeServer* serv = Utils->TreeRoot->GetChild(j); + TreeSocket* sock = serv->GetSocket(); + if (sock) + { + if (curtime >= serv->NextPingTime()) + { + if (serv->AnsweredLastPing()) + { + sock->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" PING "+serv->GetName()); + serv->SetNextPingTime(curtime + 60); + } + else + { + // they didnt answer, boot them + ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 pinged out",serv->GetName().c_str()); + sock->Squit(serv,"Ping timeout"); + ServerInstance->SE->DelFd(sock); + sock->Close(); + delete sock; + return; + } + } + } + } + } + + void ConnectServer(Link* x) + { + insp_inaddr binip; + + /* Do we already have an IP? If so, no need to resolve it. */ + if (insp_aton(x->IPAddr.c_str(), &binip) > 0) + { + /* Gave a hook, but it wasnt one we know */ + if ((!x->Hook.empty()) && (Utils->hooks.find(x->Hook.c_str()) == Utils->hooks.end())) + return; + + TreeSocket* newsocket = new TreeSocket(Utils, ServerInstance, x->IPAddr,x->Port,false,x->Timeout ? x->Timeout : 10,x->Name.c_str(), x->Hook.empty() ? NULL : Utils->hooks[x->Hook.c_str()]); + if (newsocket->GetFd() > -1) + { + /* Handled automatically on success */ + } + else + { + ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno)); + delete newsocket; + Utils->DoFailOver(x); + } + } + else + { + try + { + bool cached; + ServernameResolver* snr = new ServernameResolver((Module*)this, Utils, ServerInstance,x->IPAddr, *x, cached); + ServerInstance->AddResolver(snr, cached); + } + catch (ModuleException& e) + { + ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason()); + Utils->DoFailOver(x); + } + } + } + + void AutoConnectServers(time_t curtime) + { + for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) + { + if ((x->AutoConnect) && (curtime >= x->NextConnectTime)) + { + x->NextConnectTime = curtime + x->AutoConnect; + TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str()); + if (x->FailOver.length()) + { + TreeServer* CheckFailOver = Utils->FindServer(x->FailOver.c_str()); + if (CheckFailOver) + { + /* The failover for this server is currently a member of the network. + * The failover probably succeeded, where the main link did not. + * Don't try the main link until the failover is gone again. + */ + continue; + } + } + if (!CheckDupe) + { + // an autoconnected server is not connected. Check if its time to connect it + ServerInstance->SNO->WriteToSnoMask('l',"AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect); + this->ConnectServer(&(*x)); + } + } + } + } + + int HandleVersion(const char** parameters, int pcnt, userrec* user) + { + // we've already checked if pcnt > 0, so this is safe + TreeServer* found = Utils->FindServerMask(parameters[0]); + if (found) + { + std::string Version = found->GetVersion(); + user->WriteServ("351 %s :%s",user->nick,Version.c_str()); + if (found == Utils->TreeRoot) + { + ServerInstance->Config->Send005(user); + } + } + else + { + user->WriteServ("402 %s %s :No such server",user->nick,parameters[0]); + } + return 1; + } + + int HandleConnect(const char** parameters, int pcnt, userrec* user) + { + for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) + { + if (ServerInstance->MatchText(x->Name.c_str(),parameters[0])) + { + TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str()); + if (!CheckDupe) + { + user->WriteServ("NOTICE %s :*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",user->nick,x->Name.c_str(),(x->HiddenFromStats ? "" : x->IPAddr.c_str()),x->Port); + ConnectServer(&(*x)); + return 1; + } + else + { + user->WriteServ("NOTICE %s :*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002",user->nick,x->Name.c_str(),CheckDupe->GetParent()->GetName().c_str()); + return 1; + } + } + } + user->WriteServ("NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]); + return 1; + } + + void BroadcastTimeSync() + { + std::deque params; + params.push_back(ConvToStr(ServerInstance->Time(true))); + Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params); + } + + virtual int OnStats(char statschar, userrec* user, string_list &results) + { + if ((statschar == 'c') || (statschar == 'n')) + { + for (unsigned int i = 0; i < Utils->LinkBlocks.size(); i++) + { + results.push_back(std::string(ServerInstance->Config->ServerName)+" 213 "+user->nick+" "+statschar+" *@"+(Utils->LinkBlocks[i].HiddenFromStats ? "" : Utils->LinkBlocks[i].IPAddr)+" * "+Utils->LinkBlocks[i].Name.c_str()+" "+ConvToStr(Utils->LinkBlocks[i].Port)+" "+(Utils->LinkBlocks[i].Hook.empty() ? "plaintext" : Utils->LinkBlocks[i].Hook)+" "+(Utils->LinkBlocks[i].AutoConnect ? 'a' : '-')+'s'); + if (statschar == 'c') + results.push_back(std::string(ServerInstance->Config->ServerName)+" 244 "+user->nick+" H * * "+Utils->LinkBlocks[i].Name.c_str()); + } + results.push_back(std::string(ServerInstance->Config->ServerName)+" 219 "+user->nick+" "+statschar+" :End of /STATS report"); + ServerInstance->SNO->WriteToSnoMask('t',"Notice: %s '%c' requested by %s (%s@%s)",(!strcmp(user->server,ServerInstance->Config->ServerName) ? "Stats" : "Remote stats"),statschar,user->nick,user->ident,user->host); + return 1; + } + return 0; + } + + virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated, const std::string &original_line) + { + /* If the command doesnt appear to be valid, we dont want to mess with it. */ + if (!validated) + return 0; + + if (command == "CONNECT") + { + return this->HandleConnect(parameters,pcnt,user); + } + else if (command == "STATS") + { + return this->HandleStats(parameters,pcnt,user); + } + else if (command == "MOTD") + { + return this->HandleMotd(parameters,pcnt,user); + } + else if (command == "ADMIN") + { + return this->HandleAdmin(parameters,pcnt,user); + } + else if (command == "SQUIT") + { + return this->HandleSquit(parameters,pcnt,user); + } + else if (command == "MAP") + { + this->HandleMap(parameters,pcnt,user); + return 1; + } + else if ((command == "TIME") && (pcnt > 0)) + { + return this->HandleTime(parameters,pcnt,user); + } + else if (command == "LUSERS") + { + this->HandleLusers(parameters,pcnt,user); + return 1; + } + else if (command == "LINKS") + { + this->HandleLinks(parameters,pcnt,user); + return 1; + } + else if (command == "WHOIS") + { + if (pcnt > 1) + { + // remote whois + return this->HandleRemoteWhois(parameters,pcnt,user); + } + } + else if ((command == "VERSION") && (pcnt > 0)) + { + this->HandleVersion(parameters,pcnt,user); + return 1; + } + + return 0; + } + + virtual void OnPostCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, CmdResult result, const std::string &original_line) + { + if ((result == CMD_SUCCESS) && (ServerInstance->IsValidModuleCommand(command, pcnt, user))) + { + // this bit of code cleverly routes all module commands + // to all remote severs *automatically* so that modules + // can just handle commands locally, without having + // to have any special provision in place for remote + // commands and linking protocols. + std::deque params; + params.clear(); + for (int j = 0; j < pcnt; j++) + { + if (strchr(parameters[j],' ')) + { + params.push_back(":" + std::string(parameters[j])); + } + else + { + params.push_back(std::string(parameters[j])); + } + } + Utils->DoOneToMany(user->nick,command,params); + } + } + + virtual void OnGetServerDescription(const std::string &servername,std::string &description) + { + TreeServer* s = Utils->FindServer(servername); + if (s) + { + description = s->GetDesc(); + } + } + + virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel) + { + if (IS_LOCAL(source)) + { + std::deque params; + params.push_back(dest->nick); + params.push_back(channel->name); + Utils->DoOneToMany(source->nick,"INVITE",params); + } + } + + virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic) + { + std::deque params; + params.push_back(chan->name); + params.push_back(":"+topic); + Utils->DoOneToMany(user->nick,"TOPIC",params); + } + + virtual void OnWallops(userrec* user, const std::string &text) + { + if (IS_LOCAL(user)) + { + std::deque params; + params.push_back(":"+text); + Utils->DoOneToMany(user->nick,"WALLOPS",params); + } + } + + virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list) + { + if (target_type == TYPE_USER) + { + userrec* d = (userrec*)dest; + if ((d->GetFd() < 0) && (IS_LOCAL(user))) + { + std::deque params; + params.clear(); + params.push_back(d->nick); + params.push_back(":"+text); + Utils->DoOneToOne(user->nick,"NOTICE",params,d->server); + } + } + else if (target_type == TYPE_CHANNEL) + { + if (IS_LOCAL(user)) + { + chanrec *c = (chanrec*)dest; + if (c) + { + std::string cname = c->name; + if (status) + cname = status + cname; + TreeServerList list; + Utils->GetListOfServersForChannel(c,list,status,exempt_list); + + for (TreeServerList::iterator i = list.begin(); i != list.end(); i++) + { + TreeSocket* Sock = i->second->GetSocket(); + if (Sock) + Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text); + } + } + } + } + else if (target_type == TYPE_SERVER) + { + if (IS_LOCAL(user)) + { + char* target = (char*)dest; + std::deque par; + par.push_back(target); + par.push_back(":"+text); + Utils->DoOneToMany(user->nick,"NOTICE",par); + } + } + } + + virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list) + { + if (target_type == TYPE_USER) + { + // route private messages which are targetted at clients only to the server + // which needs to receive them + userrec* d = (userrec*)dest; + if ((d->GetFd() < 0) && (IS_LOCAL(user))) + { + std::deque params; + params.clear(); + params.push_back(d->nick); + params.push_back(":"+text); + Utils->DoOneToOne(user->nick,"PRIVMSG",params,d->server); + } + } + else if (target_type == TYPE_CHANNEL) + { + if (IS_LOCAL(user)) + { + chanrec *c = (chanrec*)dest; + if (c) + { + std::string cname = c->name; + if (status) + cname = status + cname; + TreeServerList list; + Utils->GetListOfServersForChannel(c,list,status,exempt_list); + + for (TreeServerList::iterator i = list.begin(); i != list.end(); i++) + { + TreeSocket* Sock = i->second->GetSocket(); + if (Sock) + Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text); + } + } + } + } + else if (target_type == TYPE_SERVER) + { + if (IS_LOCAL(user)) + { + char* target = (char*)dest; + std::deque par; + par.push_back(target); + par.push_back(":"+text); + Utils->DoOneToMany(user->nick,"PRIVMSG",par); + } + } + } + + virtual void OnBackgroundTimer(time_t curtime) + { + AutoConnectServers(curtime); + DoPingChecks(curtime); + } + + virtual void OnUserJoin(userrec* user, chanrec* channel) + { + // Only do this for local users + if (IS_LOCAL(user)) + { + if (channel->GetUserCounter() == 1) + { + std::deque params; + // set up their permissions and the channel TS with FJOIN. + // All users are FJOINed now, because a module may specify + // new joining permissions for the user. + params.push_back(channel->name); + params.push_back(ConvToStr(channel->age)); + params.push_back(std::string(channel->GetAllPrefixChars(user))+","+std::string(user->nick)); + Utils->DoOneToMany(ServerInstance->Config->ServerName,"FJOIN",params); + /* First user in, sync the modes for the channel */ + params.pop_back(); + /* This is safe, all inspircd servers default to +nt */ + params.push_back("+nt"); + Utils->DoOneToMany(ServerInstance->Config->ServerName,"FMODE",params); + } + else + { + std::deque params; + params.push_back(channel->name); + params.push_back(ConvToStr(channel->age)); + Utils->DoOneToMany(user->nick,"JOIN",params); + } + } + } + + virtual void OnChangeHost(userrec* user, const std::string &newhost) + { + // only occurs for local clients + if (user->registered != REG_ALL) + return; + std::deque params; + params.push_back(newhost); + Utils->DoOneToMany(user->nick,"FHOST",params); + } + + virtual void OnChangeName(userrec* user, const std::string &gecos) + { + // only occurs for local clients + if (user->registered != REG_ALL) + return; + std::deque params; + params.push_back(gecos); + Utils->DoOneToMany(user->nick,"FNAME",params); + } + + virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage) + { + if (IS_LOCAL(user)) + { + std::deque params; + params.push_back(channel->name); + if (partmessage != "") + params.push_back(":"+partmessage); + Utils->DoOneToMany(user->nick,"PART",params); + } + } + + virtual void OnUserConnect(userrec* user) + { + char agestr[MAXBUF]; + if (IS_LOCAL(user)) + { + std::deque params; + snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age); + params.push_back(agestr); + params.push_back(user->nick); + params.push_back(user->host); + params.push_back(user->dhost); + params.push_back(user->ident); + params.push_back("+"+std::string(user->FormatModes())); + params.push_back(user->GetIPString()); + params.push_back(":"+std::string(user->fullname)); + Utils->DoOneToMany(ServerInstance->Config->ServerName,"NICK",params); + + // User is Local, change needs to be reflected! + TreeServer* SourceServer = Utils->FindServer(user->server); + if (SourceServer) + { + SourceServer->AddUserCount(); + } + + } + } + + virtual void OnUserQuit(userrec* user, const std::string &reason) + { + if ((IS_LOCAL(user)) && (user->registered == REG_ALL)) + { + std::deque params; + params.push_back(":"+reason); + Utils->DoOneToMany(user->nick,"QUIT",params); + } + // Regardless, We need to modify the user Counts.. + TreeServer* SourceServer = Utils->FindServer(user->server); + if (SourceServer) + { + SourceServer->DelUserCount(); + } + + } + + virtual void OnUserPostNick(userrec* user, const std::string &oldnick) + { + if (IS_LOCAL(user)) + { + std::deque params; + params.push_back(user->nick); + Utils->DoOneToMany(oldnick,"NICK",params); + } + } + + virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason) + { + if ((source) && (IS_LOCAL(source))) + { + std::deque params; + params.push_back(chan->name); + params.push_back(user->nick); + params.push_back(":"+reason); + Utils->DoOneToMany(source->nick,"KICK",params); + } + else if (!source) + { + std::deque params; + params.push_back(chan->name); + params.push_back(user->nick); + params.push_back(":"+reason); + Utils->DoOneToMany(ServerInstance->Config->ServerName,"KICK",params); + } + } + + virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason) + { + std::deque params; + params.push_back(dest->nick); + params.push_back(":"+reason); + Utils->DoOneToMany(source->nick,"KILL",params); + } + + virtual void OnRehash(userrec* user, const std::string ¶meter) + { + if (parameter != "") + { + std::deque params; + params.push_back(parameter); + Utils->DoOneToMany(user ? user->nick : ServerInstance->Config->ServerName, "REHASH", params); + // check for self + if (ServerInstance->MatchText(ServerInstance->Config->ServerName,parameter)) + { + ServerInstance->WriteOpers("*** Remote rehash initiated locally by \002%s\002", user ? user->nick : ServerInstance->Config->ServerName); + ServerInstance->RehashServer(); + } + } + Utils->ReadConfiguration(false); + InitializeDisabledCommands(ServerInstance->Config->DisabledCommands, ServerInstance); + } + + // note: the protocol does not allow direct umode +o except + // via NICK with 8 params. sending OPERTYPE infers +o modechange + // locally. + virtual void OnOper(userrec* user, const std::string &opertype) + { + if (IS_LOCAL(user)) + { + std::deque params; + params.push_back(opertype); + Utils->DoOneToMany(user->nick,"OPERTYPE",params); + } + } + + void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason) + { + if (!source) + { + /* Server-set lines */ + char data[MAXBUF]; + snprintf(data,MAXBUF,"%c %s %s %lu %lu :%s", linetype, host.c_str(), ServerInstance->Config->ServerName, (unsigned long)ServerInstance->Time(false), + (unsigned long)duration, reason.c_str()); + std::deque params; + params.push_back(data); + Utils->DoOneToMany(ServerInstance->Config->ServerName, "ADDLINE", params); + } + else + { + if (IS_LOCAL(source)) + { + char type[8]; + snprintf(type,8,"%cLINE",linetype); + std::string stype = type; + if (adding) + { + char sduration[MAXBUF]; + snprintf(sduration,MAXBUF,"%ld",duration); + std::deque params; + params.push_back(host); + params.push_back(sduration); + params.push_back(":"+reason); + Utils->DoOneToMany(source->nick,stype,params); + } + else + { + std::deque params; + params.push_back(host); + Utils->DoOneToMany(source->nick,stype,params); + } + } + } + } + + virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask) + { + OnLine(source,hostmask,true,'G',duration,reason); + } + + virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask) + { + OnLine(source,ipmask,true,'Z',duration,reason); + } + + virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask) + { + OnLine(source,nickmask,true,'Q',duration,reason); + } + + virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask) + { + OnLine(source,hostmask,true,'E',duration,reason); + } + + virtual void OnDelGLine(userrec* source, const std::string &hostmask) + { + OnLine(source,hostmask,false,'G',0,""); + } + + virtual void OnDelZLine(userrec* source, const std::string &ipmask) + { + OnLine(source,ipmask,false,'Z',0,""); + } + + virtual void OnDelQLine(userrec* source, const std::string &nickmask) + { + OnLine(source,nickmask,false,'Q',0,""); + } + + virtual void OnDelELine(userrec* source, const std::string &hostmask) + { + OnLine(source,hostmask,false,'E',0,""); + } + + virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text) + { + if ((IS_LOCAL(user)) && (user->registered == REG_ALL)) + { + if (target_type == TYPE_USER) + { + userrec* u = (userrec*)dest; + std::deque params; + params.push_back(u->nick); + params.push_back(text); + Utils->DoOneToMany(user->nick,"MODE",params); + } + else + { + chanrec* c = (chanrec*)dest; + std::deque params; + params.push_back(c->name); + params.push_back(text); + Utils->DoOneToMany(user->nick,"MODE",params); + } + } + } + + virtual void OnSetAway(userrec* user) + { + if (IS_LOCAL(user)) + { + std::deque params; + params.push_back(":"+std::string(user->awaymsg)); + Utils->DoOneToMany(user->nick,"AWAY",params); + } + } + + virtual void OnCancelAway(userrec* user) + { + if (IS_LOCAL(user)) + { + std::deque params; + params.clear(); + Utils->DoOneToMany(user->nick,"AWAY",params); + } + } + + virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline) + { + TreeSocket* s = (TreeSocket*)opaque; + if (target) + { + if (target_type == TYPE_USER) + { + userrec* u = (userrec*)target; + s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+u->nick+" "+ConvToStr(u->age)+" "+modeline); + } + else + { + chanrec* c = (chanrec*)target; + s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+modeline); + } + } + } + + virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata) + { + TreeSocket* s = (TreeSocket*)opaque; + if (target) + { + if (target_type == TYPE_USER) + { + userrec* u = (userrec*)target; + s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+u->nick+" "+extname+" :"+extdata); + } + else if (target_type == TYPE_CHANNEL) + { + chanrec* c = (chanrec*)target; + s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA "+c->name+" "+extname+" :"+extdata); + } + } + if (target_type == TYPE_OTHER) + { + s->WriteLine(std::string(":")+ServerInstance->Config->ServerName+" METADATA * "+extname+" :"+extdata); + } + } + + virtual void OnEvent(Event* event) + { + std::deque* params = (std::deque*)event->GetData(); + + if (event->GetEventID() == "send_metadata") + { + if (params->size() < 3) + return; + (*params)[2] = ":" + (*params)[2]; + Utils->DoOneToMany(ServerInstance->Config->ServerName,"METADATA",*params); + } + else if (event->GetEventID() == "send_topic") + { + if (params->size() < 2) + return; + (*params)[1] = ":" + (*params)[1]; + params->insert(params->begin() + 1,ServerInstance->Config->ServerName); + params->insert(params->begin() + 1,ConvToStr(ServerInstance->Time(true))); + Utils->DoOneToMany(ServerInstance->Config->ServerName,"FTOPIC",*params); + } + else if (event->GetEventID() == "send_mode") + { + if (params->size() < 2) + return; + // Insert the TS value of the object, either userrec or chanrec + time_t ourTS = 0; + userrec* a = ServerInstance->FindNick((*params)[0]); + if (a) + { + ourTS = a->age; + } + else + { + chanrec* a = ServerInstance->FindChan((*params)[0]); + if (a) + { + ourTS = a->age; + } + } + params->insert(params->begin() + 1,ConvToStr(ourTS)); + Utils->DoOneToMany(ServerInstance->Config->ServerName,"FMODE",*params); + } + else if (event->GetEventID() == "send_mode_explicit") + { + if (params->size() < 2) + return; + Utils->DoOneToMany(ServerInstance->Config->ServerName,"MODE",*params); + } + else if (event->GetEventID() == "send_opers") + { + if (params->size() < 1) + return; + (*params)[0] = ":" + (*params)[0]; + Utils->DoOneToMany(ServerInstance->Config->ServerName,"OPERNOTICE",*params); + } + else if (event->GetEventID() == "send_modeset") + { + if (params->size() < 2) + return; + (*params)[1] = ":" + (*params)[1]; + Utils->DoOneToMany(ServerInstance->Config->ServerName,"MODENOTICE",*params); + } + else if (event->GetEventID() == "send_snoset") + { + if (params->size() < 2) + return; + (*params)[1] = ":" + (*params)[1]; + Utils->DoOneToMany(ServerInstance->Config->ServerName,"SNONOTICE",*params); + } + else if (event->GetEventID() == "send_push") + { + if (params->size() < 2) + return; + + userrec *a = ServerInstance->FindNick((*params)[0]); + + if (!a) + return; + + (*params)[1] = ":" + (*params)[1]; + Utils->DoOneToOne(ServerInstance->Config->ServerName, "PUSH", *params, a->server); + } + } + + virtual ~ModuleSpanningTree() + { + /* This will also free the listeners */ + delete Utils; + if (SyncTimer) + ServerInstance->Timers->DelTimer(SyncTimer); + + ServerInstance->DoneWithInterface("InspSocketHook"); + } + + virtual Version GetVersion() + { + return Version(1,1,0,2,VF_VENDOR,API_VERSION); + } + + void Implements(char* List) + { + List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1; + List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1; + List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1; + List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1; + List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1; + List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1; + List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = List[I_OnPostCommand] = 1; + } + + /* It is IMPORTANT that m_spanningtree is the last module in the chain + * so that any activity it sees is FINAL, e.g. we arent going to send out + * a NICK message before m_cloaking has finished putting the +x on the user, + * etc etc. + * Therefore, we return PRIORITY_LAST to make sure we end up at the END of + * the module call queue. + */ + Priority Prioritize() + { + return PRIORITY_LAST; + } +}; + +TimeSyncTimer::TimeSyncTimer(InspIRCd *Inst, ModuleSpanningTree *Mod) : InspTimer(43200, Inst->Time(), true), Instance(Inst), Module(Mod) +{ +} + +void TimeSyncTimer::Tick(time_t TIME) +{ + Module->BroadcastTimeSync(); +} + +void SpanningTreeUtilities::DoFailOver(Link* x) +{ + if (x->FailOver.length()) + { + if (x->FailOver == x->Name) + { + ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Some muppet configured the failover for server \002%s\002 to point at itself. Not following it!", x->Name.c_str()); + return; + } + Link* TryThisOne = this->FindLink(x->FailOver.c_str()); + if (TryThisOne) + { + ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str()); + Creator->ConnectServer(TryThisOne); + } + else + { + ServerInstance->SNO->WriteToSnoMask('l',"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str()); + } + } +} + +Link* SpanningTreeUtilities::FindLink(const std::string& name) +{ + for (std::vector::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++) + { + if (ServerInstance->MatchText(x->Name.c_str(), name.c_str())) + { + return &(*x); + } + } + return NULL; +} + +class ModuleSpanningTreeFactory : public ModuleFactory +{ + public: + ModuleSpanningTreeFactory() + { + } + + ~ModuleSpanningTreeFactory() + { + } + + virtual Module * CreateModule(InspIRCd* Me) + { + return new ModuleSpanningTree(Me); + } + +}; + + +extern "C" void * init_module( void ) +{ + return new ModuleSpanningTreeFactory; +} -- cgit v1.2.3