X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Ftreesocket2.cpp;h=5181dfeeac05c48bb174f1d6210dd6ea4f26b2ed;hb=67de413cad88194972d55a8ff88464370890c5a9;hp=b1ecff060806a67a2706b69e730117c64398db16;hpb=2561ede5059f0e3340466a302b404efd2381c77f;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_spanningtree/treesocket2.cpp b/src/modules/m_spanningtree/treesocket2.cpp index b1ecff060..5181dfeea 100644 --- a/src/modules/m_spanningtree/treesocket2.cpp +++ b/src/modules/m_spanningtree/treesocket2.cpp @@ -1,25 +1,32 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd: (C) 2002-2010 InspIRCd Development Team - * See: http://wiki.inspircd.org/Credits + * Copyright (C) 2007-2008, 2012 Robin Burchell + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2007-2008 Craig Edwards + * Copyright (C) 2008 Pippijn van Steenhoven + * Copyright (C) 2008 Thomas Stagner + * Copyright (C) 2007 Dennis Friis * - * This program is free but copyrighted software; see - * the file COPYING for details. + * This file is part of InspIRCd. InspIRCd is free software: you can + * redistribute it and/or modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. * - * --------------------------------------------------- + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . */ + #include "inspircd.h" -#include "socket.h" -#include "xline.h" -#include "socketengine.h" #include "main.h" #include "utils.h" #include "treeserver.h" -#include "link.h" #include "treesocket.h" #include "resolvers.h" @@ -36,7 +43,7 @@ void TreeSocket::Split(const std::string& line, std::string& prefix, std::string if (!tokens.GetToken(prefix)) return; - + if (prefix[0] == ':') { prefix = prefix.substr(1); @@ -73,7 +80,7 @@ void TreeSocket::ProcessLine(std::string &line) std::string command; parameterlist params; - ServerInstance->Logs->Log("m_spanningtree",DEBUG, "S[%d] I %s", this->GetFd(), line.c_str()); + ServerInstance->Logs->Log(MODNAME, LOG_RAWIO, "S[%d] I %s", this->GetFd(), line.c_str()); Split(line, prefix, command, params); @@ -118,7 +125,7 @@ void TreeSocket::ProcessLine(std::string &line) } else { - this->SendError(std::string("Invalid command in negotiation phase: ") + command.c_str()); + this->SendError("Invalid command in negotiation phase: " + command); } break; case WAIT_AUTH_2: @@ -140,7 +147,7 @@ void TreeSocket::ProcessLine(std::string &line) { if (params.size()) { - time_t them = atoi(params[0].c_str()); + time_t them = ConvToInt(params[0]); time_t delta = them - ServerInstance->Time(); if ((delta < -600) || (delta > 600)) { @@ -153,13 +160,32 @@ void TreeSocket::ProcessLine(std::string &line) ServerInstance->SNO->WriteGlobalSno('l',"\2WARNING\2: Your clocks are out by %d seconds. Please consider synching your clocks.", abs((long)delta)); } } - this->LinkState = CONNECTED; + // Check for duplicate server name/sid again, it's possible that a new + // server was introduced while we were waiting for them to send BURST. + // (we do not reserve their server name/sid when they send SERVER, we do it now) + if (!CheckDuplicate(capab->name, capab->sid)) + return; + + this->LinkState = CONNECTED; Utils->timeoutlist.erase(this); - parameterlist sparams; - Utils->DoOneToAllButSender(prefix, "BURST", params, MyRoot->GetName()); + + linkID = capab->name; + + MyRoot = new TreeServer(capab->name, capab->description, capab->sid, Utils->TreeRoot, this, capab->hidden); + Utils->TreeRoot->AddChild(MyRoot); + MyRoot->bursting = true; this->DoBurst(MyRoot); + + parameterlist sparams; + sparams.push_back(MyRoot->GetName()); + sparams.push_back("*"); + sparams.push_back("0"); + sparams.push_back(MyRoot->GetID()); + sparams.push_back(":" + MyRoot->GetDesc()); + Utils->DoOneToAllButSender(ServerInstance->Config->GetSID(), "SERVER", sparams, MyRoot); + Utils->DoOneToAllButSender(MyRoot->GetID(), "BURST", params, MyRoot); } else if (command == "ERROR") { @@ -210,11 +236,7 @@ void TreeSocket::ProcessConnectedLine(std::string& prefix, std::string& command, User* who = ServerInstance->FindUUID(prefix); std::string direction; - if (who) - { - direction = who->server; - } - else + if (!who) { TreeServer* ServerSource = Utils->FindServer(prefix); if (prefix.empty()) @@ -223,7 +245,6 @@ void TreeSocket::ProcessConnectedLine(std::string& prefix, std::string& command, if (ServerSource) { who = ServerSource->ServerUser; - direction = prefix; } else { @@ -231,13 +252,30 @@ void TreeSocket::ProcessConnectedLine(std::string& prefix, std::string& command, * due to various race conditions such as the KILL message for a user somehow * crossing the users QUIT further upstream from the server. Thanks jilles! */ - ServerInstance->Logs->Log("m_spanningtree", DEBUG, "Command '%s' from unknown prefix '%s'! Dropping entire command.", - command.c_str(), prefix.c_str()); - return; + + if ((prefix.length() == UIDGenerator::UUID_LENGTH) && (isdigit(prefix[0])) && + ((command == "FMODE") || (command == "MODE") || (command == "KICK") || (command == "TOPIC") || (command == "KILL") || (command == "ADDLINE") || (command == "DELLINE"))) + { + /* Special case, we cannot drop these commands as they've been committed already on a + * part of the network by the time we receive them, so in this scenario pretend the + * command came from a server to avoid desync. + */ + + who = ServerInstance->FindUUID(prefix.substr(0, 3)); + if (!who) + who = this->MyRoot->ServerUser; + } + else + { + ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Command '%s' from unknown prefix '%s'! Dropping entire command.", + command.c_str(), prefix.c_str()); + return; + } } } // Make sure prefix is still good + direction = who->server; prefix = who->uuid; /* @@ -260,181 +298,68 @@ void TreeSocket::ProcessConnectedLine(std::string& prefix, std::string& command, if ((!route_back_again) || (route_back_again->GetSocket() != this)) { if (route_back_again) - ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Protocol violation: Fake direction '%s' from connection '%s'", + ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Protocol violation: Fake direction '%s' from connection '%s'", prefix.c_str(),linkID.c_str()); return; } - /* - * First up, check for any malformed commands (e.g. MODE without a timestamp) - * and rewrite commands where necessary (SVSMODE -> MODE for services). -- w - */ - if (command == "SVSMODE") // This isn't in an "else if" so we still force FMODE for changes on channels. - command = "MODE"; - - // TODO move all this into Commands - if (command == "MAP") - { - Utils->Creator->HandleMap(params, who); - } - else if (command == "SERVER") - { - this->RemoteServer(prefix,params); - } - else if (command == "ERROR") - { - this->Error(params); - } - else if (command == "AWAY") - { - this->Away(prefix,params); - } - else if (command == "PING") - { - this->LocalPing(prefix,params); - } - else if (command == "PONG") - { - TreeServer *s = Utils->FindServer(prefix); - if (s && s->bursting) - { - ServerInstance->SNO->WriteGlobalSno('l',"Server \002%s\002 has not finished burst, forcing end of burst (send ENDBURST!)", prefix.c_str()); - s->FinishBurst(); - } - this->LocalPong(prefix,params); - } - else if (command == "VERSION") - { - this->ServerVersion(prefix,params); - } - else if (command == "ADDLINE") - { - this->AddLine(prefix,params); - } - else if (command == "DELLINE") - { - this->DelLine(prefix,params); - } - else if (command == "SAVE") - { - this->ForceNick(prefix,params); - } - else if (command == "OPERQUIT") + // Translate commands coming from servers using an older protocol + if (proto_version < ProtocolVersion) { - this->OperQuit(prefix,params); - } - else if (command == "IDLE") - { - this->Whois(prefix,params); - } - else if (command == "PUSH") - { - this->Push(prefix,params); - } - else if (command == "SQUIT") - { - if (params.size() == 2) - { - this->Squit(Utils->FindServer(params[0]),params[1]); - } - } - else if (command == "SNONOTICE") - { - if (params.size() >= 2) - { - ServerInstance->SNO->WriteToSnoMask(params[0][0], "From " + who->nick + ": "+ params[1]); - params[1] = ":" + params[1]; - Utils->DoOneToAllButSender(prefix, command, params, prefix); - } - } - else if (command == "BURST") - { - // Set prefix server as bursting - TreeServer* ServerSource = Utils->FindServer(prefix); - if (!ServerSource) - { - ServerInstance->SNO->WriteGlobalSno('l', "WTF: Got BURST from a non-server(?): %s", prefix.c_str()); + if (!PreProcessOldProtocolMessage(who, command, params)) return; - } - - ServerSource->bursting = true; - Utils->DoOneToAllButSender(prefix, command, params, prefix); } - else if (command == "ENDBURST") + + ServerCommand* scmd = Utils->Creator->CmdManager.GetHandler(command); + CommandBase* cmdbase = scmd; + Command* cmd; + if (!scmd) { - TreeServer* ServerSource = Utils->FindServer(prefix); - if (!ServerSource) + // Not a special server-to-server command + cmd = ServerInstance->Parser->GetHandler(command); + if (!cmd) { - ServerInstance->SNO->WriteGlobalSno('l', "WTF: Got ENDBURST from a non-server(?): %s", prefix.c_str()); + irc::stringjoiner pmlist(params); + ServerInstance->Logs->Log(MODNAME, LOG_SPARSE, "Unrecognised S2S command :%s %s %s", + who->uuid.c_str(), command.c_str(), pmlist.GetJoined().c_str()); + SendError("Unrecognised command '" + command + "' -- possibly loaded mismatched modules"); return; } - - ServerSource->FinishBurst(); - Utils->DoOneToAllButSender(prefix, command, params, prefix); + cmdbase = cmd; } - else if (command == "ENCAP") + + if (params.size() < cmdbase->min_params) { - this->Encap(who, params); + irc::stringjoiner pmlist(params); + ServerInstance->Logs->Log(MODNAME, LOG_SPARSE, "Insufficient parameters for S2S command :%s %s %s", + who->uuid.c_str(), command.c_str(), pmlist.GetJoined().c_str()); + SendError("Insufficient parameters for command '" + command + "'"); + return; } - else if (command == "NICK") - { - if (params.size() != 2) - { - SendError("Protocol violation: NICK message without TS - :"+std::string(who->uuid)+" NICK "+params[0]); - return; - } - if (IS_SERVER(who)) - { - SendError("Protocol violation: Server changing nick"); + if ((!params.empty()) && (params.back().empty()) && (!cmdbase->allow_empty_last_param)) + { + // the last param is empty and the command handler doesn't allow that, check if there will be enough params if we drop the last + if (params.size()-1 < cmdbase->min_params) return; - } - - /* Update timestamp on user when they change nicks */ - who->age = atoi(params[1].c_str()); - - /* - * On nick messages, check that the nick doesnt already exist here. - * If it does, perform collision logic. - */ - User* x = ServerInstance->FindNickOnly(params[0]); - if ((x) && (x != who)) - { - int collideret = 0; - /* x is local, who is remote */ - collideret = this->DoCollision(x, who->age, who->ident, who->GetIPString(), who->uuid); - if (collideret != 1) - { - /* - * Remote client lost, or both lost, parsing or passing on this - * nickchange would be pointless, as the incoming client's server will - * soon recieve SVSNICK to change its nick to its UID. :) -- w00t - */ - return; - } - } - who->ForceNickChange(params[0].c_str()); - Utils->RouteCommand(route_back_again, command, params, who); + params.pop_back(); } + + CmdResult res; + if (scmd) + res = scmd->Handle(who, params); else - { - Command* cmd = ServerInstance->Parser->GetHandler(command); - CmdResult res = CMD_INVALID; - if (cmd && params.size() >= cmd->min_params) - { - res = cmd->Handle(params, who); - } + res = cmd->Handle(params, who); - if (res == CMD_INVALID) - { - irc::stringjoiner pmlist(" ", params, 0, params.size() - 1); - ServerInstance->Logs->Log("spanningtree", SPARSE, "Invalid S2S command :%s %s %s", - who->uuid.c_str(), command.c_str(), pmlist.GetJoined().c_str()); - SendError("Unrecognised or malformed command '" + command + "' -- possibly loaded mismatched modules"); - } - if (res == CMD_SUCCESS) - Utils->RouteCommand(route_back_again, command, params, who); + if (res == CMD_INVALID) + { + irc::stringjoiner pmlist(params); + ServerInstance->Logs->Log(MODNAME, LOG_SPARSE, "Error handling S2S command :%s %s %s", + who->uuid.c_str(), command.c_str(), pmlist.GetJoined().c_str()); + SendError("Error handling '" + command + "' -- possibly loaded mismatched modules"); } + else if (res == CMD_SUCCESS) + Utils->RouteCommand(route_back_again, cmdbase, params, who); } void TreeSocket::OnTimeout() @@ -455,13 +380,16 @@ void TreeSocket::Close() if (MyRoot) Squit(MyRoot,getError()); - if (!linkID.empty()) + if (!ConnectionFailureShown) { + ConnectionFailureShown = true; ServerInstance->SNO->WriteGlobalSno('l', "Connection to '\2%s\2' failed.",linkID.c_str()); time_t server_uptime = ServerInstance->Time() - this->age; if (server_uptime) - ServerInstance->SNO->WriteGlobalSno('l', "Connection to '\2%s\2' was established for %s", linkID.c_str(), Utils->Creator->TimeToStr(server_uptime).c_str()); - linkID.clear(); + { + std::string timestr = ModuleSpanningTree::TimeToStr(server_uptime); + ServerInstance->SNO->WriteGlobalSno('l', "Connection to '\2%s\2' was established for %s", linkID.c_str(), timestr.c_str()); + } } }