X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Fserver.cpp;h=d3033799e1a21d8d91990b51377bcf32cbd64871;hb=a785f350fd584d87f3b84bbaff569ecb59c29f04;hp=cbbc7190a8345915cdc3b517544a0f5843e260fe;hpb=6fea8ffbc298154d38ccd00682aad44b5a79efb3;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_spanningtree/server.cpp b/src/modules/m_spanningtree/server.cpp index cbbc7190a..d3033799e 100644 --- a/src/modules/m_spanningtree/server.cpp +++ b/src/modules/m_spanningtree/server.cpp @@ -1,59 +1,61 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2008 Robin Burchell * - * InspIRCd: (C) 2002-2008 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * This file is part of InspIRCd. InspIRCd is free software: you can + * redistribute it and/or modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. * - * This program is free but copyrighted software; see - * the file COPYING for details. + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. * - * --------------------------------------------------- + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . */ + #include "inspircd.h" -#include "commands/cmd_whois.h" -#include "commands/cmd_stats.h" #include "socket.h" -#include "wildcard.h" #include "xline.h" -#include "transport.h" #include "socketengine.h" -#include "m_spanningtree/main.h" -#include "m_spanningtree/utils.h" -#include "m_spanningtree/treeserver.h" -#include "m_spanningtree/link.h" -#include "m_spanningtree/treesocket.h" -#include "m_spanningtree/resolvers.h" -#include "m_spanningtree/handshaketimer.h" +#include "main.h" +#include "utils.h" +#include "link.h" +#include "treeserver.h" +#include "treesocket.h" -/* $ModDep: m_spanningtree/timesynctimer.h m_spanningtree/resolvers.h m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/link.h m_spanningtree/treesocket.h */ +/* $ModDep: m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/treesocket.h m_spanningtree/link.h */ /* * Some server somewhere in the network introducing another server. * -- w */ -bool TreeSocket::RemoteServer(const std::string &prefix, std::deque ¶ms) +bool TreeSocket::RemoteServer(const std::string &prefix, parameterlist ¶ms) { if (params.size() < 5) { - SendError("Protocol error - Missing SID"); + SendError("Protocol error - Not enough parameters for SERVER command"); return false; } std::string servername = params[0]; - std::string password = params[1]; - // hopcount is not used for a remote server, we calculate this ourselves + // password is not used for a remote server + // hopcount is not used (ever) std::string sid = params[3]; std::string description = params[4]; TreeServer* ParentOfThis = Utils->FindServer(prefix); + if (!ParentOfThis) { this->SendError("Protocol error - Introduced remote server from unknown server "+prefix); return false; } - if (!this->Instance->IsSID(sid)) + if (!ServerInstance->IsSID(sid)) { this->SendError("Invalid format server ID: "+sid+"!"); return false; @@ -62,25 +64,26 @@ bool TreeSocket::RemoteServer(const std::string &prefix, std::deque if (CheckDupe) { this->SendError("Server "+servername+" already exists!"); - this->Instance->SNO->WriteToSnoMask('l',"Server \2"+servername+"\2 being introduced from \2" + prefix + "\2 denied, already exists. Closing link with " + prefix); + ServerInstance->SNO->WriteToSnoMask('L', "Server \2"+CheckDupe->GetName()+"\2 being introduced from \2" + ParentOfThis->GetName() + "\2 denied, already exists. Closing link with " + ParentOfThis->GetName()); return false; } - - Link* lnk = Utils->FindLink(servername); - - TreeServer *Node = new TreeServer(this->Utils, this->Instance, servername, description, sid, ParentOfThis,NULL, lnk ? lnk->Hidden : false); - - if (Node->DuplicateID()) + CheckDupe = Utils->FindServer(sid); + if (CheckDupe) { - this->SendError("Server ID "+sid+" already exists on the network!"); - this->Instance->SNO->WriteToSnoMask('l',"Server \2"+servername+"\2 being introduced from \2" + prefix + "\2 denied, server ID already exists on the network. Closing link with " + prefix); + this->SendError("Server ID "+sid+" already exists! You may want to specify the server ID for the server manually with so they do not conflict."); + ServerInstance->SNO->WriteToSnoMask('L', "Server \2"+servername+"\2 being introduced from \2" + ParentOfThis->GetName() + "\2 denied, server ID already exists on the network. Closing link with " + ParentOfThis->GetName()); return false; } + + Link* lnk = Utils->FindLink(servername); + + TreeServer *Node = new TreeServer(Utils, servername, description, sid, ParentOfThis,NULL, lnk ? lnk->Hidden : false); + ParentOfThis->AddChild(Node); params[4] = ":" + params[4]; Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix); - this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")"); + ServerInstance->SNO->WriteToSnoMask('L', "Server \002"+ParentOfThis->GetName()+"\002 introduced server \002"+servername+"\002 ("+description+")"); return true; } @@ -89,11 +92,11 @@ bool TreeSocket::RemoteServer(const std::string &prefix, std::deque * This is used after the other side of a connection has accepted our credentials. * They are then introducing themselves to us, BEFORE either of us burst. -- w */ -bool TreeSocket::Outbound_Reply_Server(std::deque ¶ms) +bool TreeSocket::Outbound_Reply_Server(parameterlist ¶ms) { if (params.size() < 5) { - SendError("Protocol error - Missing SID"); + SendError("Protocol error - Not enough parameters for SERVER command"); return false; } @@ -104,75 +107,112 @@ bool TreeSocket::Outbound_Reply_Server(std::deque ¶ms) std::string description = params[4]; int hops = atoi(params[2].c_str()); - this->InboundServerName = sname; - this->InboundDescription = description; - this->InboundSID = sid; - - if (!sentcapab) - this->SendCapabilities(); + this->SendCapabilities(2); if (hops) { this->SendError("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"); + ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication"); return false; } - if (!this->Instance->IsSID(sid)) + if (!ServerInstance->IsSID(sid)) { this->SendError("Invalid format server ID: "+sid+"!"); return false; } - for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) + for (std::vector >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++) { - if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password)) || (x->RecvPass == password && (this->GetTheirChallenge().empty())))) + Link* x = *i; + if (x->Name != servername && x->Name != "*") // open link allowance + continue; + + if (!ComparePass(*x, password)) + { + ServerInstance->SNO->WriteToSnoMask('l',"Invalid password on link: %s", x->Name.c_str()); + continue; + } + + TreeServer* CheckDupe = Utils->FindServer(sname); + if (CheckDupe) { - TreeServer* CheckDupe = Utils->FindServer(sname); - if (CheckDupe) - { - this->SendError("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; - } - - /* - * They're in WAIT_AUTH_2 (having accepted our credentials). - * Set our state to CONNECTED (since everything's peachy so far) and send our - * netburst to them, which will trigger their CONNECTED state, and BURST in reply. - * - * While we're at it, create a treeserver object so we know about them. - * -- w - */ - this->LinkState = CONNECTED; - - TreeServer *Node = new TreeServer(this->Utils, this->Instance, sname, description, sid, Utils->TreeRoot, this, x->Hidden); - - if (Node->DuplicateID()) - { - this->SendError("Server ID "+sid+" already exists on the network!"); - this->Instance->SNO->WriteToSnoMask('l',"Server \2"+assign(servername)+"\2 being introduced denied, server ID already exists on the network. Closing link."); - return false; - } - - Utils->TreeRoot->AddChild(Node); - params[4] = ":" + params[4]; - Utils->DoOneToAllButSender(Instance->Config->GetSID(),"SERVER",params,sname); - Node->bursting = true; - this->DoBurst(Node); - return true; + std::string pname = CheckDupe->GetParent() ? CheckDupe->GetParent()->GetName() : ""; + SendError("Server "+sname+" already exists on server "+pname+"!"); + ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+pname); + return false; } + CheckDupe = Utils->FindServer(sid); + if (CheckDupe) + { + this->SendError("Server ID "+sid+" already exists on the network! You may want to specify the server ID for the server manually with so they do not conflict."); + ServerInstance->SNO->WriteToSnoMask('l',"Server \2"+assign(servername)+"\2 being introduced denied, server ID already exists on the network. Closing link."); + return false; + } + + /* + * They're in WAIT_AUTH_2 (having accepted our credentials). + * Set our state to CONNECTED (since everything's peachy so far) and send our + * netburst to them, which will trigger their CONNECTED state, and BURST in reply. + * + * While we're at it, create a treeserver object so we know about them. + * -- w + */ + this->LinkState = CONNECTED; + + Utils->timeoutlist.erase(this); + linkID = sname; + + MyRoot = new TreeServer(Utils, sname, description, sid, Utils->TreeRoot, this, x->Hidden); + Utils->TreeRoot->AddChild(MyRoot); + this->DoBurst(MyRoot); + + params[4] = ":" + params[4]; + + /* IMPORTANT: Take password/hmac hash OUT of here before we broadcast the introduction! */ + params[1] = "*"; + Utils->DoOneToAllButSender(ServerInstance->Config->GetSID(),"SERVER",params,sname); + + return true; } - this->SendError("Invalid credentials"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials"); + + this->SendError("Mismatched server name or password (check the other server's snomask output for details - e.g. umode +s +Ll)"); + ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials"); return false; } +bool TreeSocket::CheckDuplicate(const std::string& sname, const std::string& sid) +{ + /* Check for fully initialized instances of the server by name */ + TreeServer* CheckDupe = Utils->FindServer(sname); + if (CheckDupe) + { + std::string pname = CheckDupe->GetParent() ? CheckDupe->GetParent()->GetName() : ""; + SendError("Server "+sname+" already exists on server "+pname+"!"); + ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+pname); + return false; + } + + /* Check for fully initialized instances of the server by id */ + ServerInstance->Logs->Log("m_spanningtree",DEBUG,"Looking for dupe SID %s", sid.c_str()); + CheckDupe = Utils->FindServerID(sid); + + if (CheckDupe) + { + this->SendError("Server ID "+CheckDupe->GetID()+" already exists on server "+CheckDupe->GetName()+"! You may want to specify the server ID for the server manually with so they do not conflict."); + ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server ID '"+CheckDupe->GetID()+ + "' already exists on server "+CheckDupe->GetName()); + return false; + } + + return true; +} + /* * Someone else is attempting to connect to us if this is called. Validate their credentials etc. * -- w */ -bool TreeSocket::Inbound_Server(std::deque ¶ms) +bool TreeSocket::Inbound_Server(parameterlist ¶ms) { if (params.size() < 5) { @@ -187,65 +227,57 @@ bool TreeSocket::Inbound_Server(std::deque ¶ms) std::string description = params[4]; int hops = atoi(params[2].c_str()); - this->InboundServerName = sname; - this->InboundDescription = description; - this->InboundSID = sid; - - if (!sentcapab) - this->SendCapabilities(); + this->SendCapabilities(2); if (hops) { this->SendError("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"); + ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication"); return false; } - if (!this->Instance->IsSID(sid)) + if (!ServerInstance->IsSID(sid)) { this->SendError("Invalid format server ID: "+sid+"!"); return false; } - for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++) + for (std::vector >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++) { - if ((x->Name == servername) && ((ComparePass(this->MakePass(x->RecvPass,this->GetOurChallenge()),password) || x->RecvPass == password && (this->GetTheirChallenge().empty())))) + Link* x = *i; + if (x->Name != servername && x->Name != "*") // open link allowance + continue; + + if (!ComparePass(*x, password)) { - /* Check for fully initialized instances of the server by id */ - Instance->Log(DEBUG,"Looking for dupe SID %s", sid.c_str()); - TreeServer* CheckDupeSID = Utils->FindServerID(sid); - if (CheckDupeSID) - { - this->SendError("Server ID "+CheckDupeSID->GetID()+" already exists on server "+CheckDupeSID->GetName()+"!"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server ID '"+CheckDupeSID->GetID()+ - "' already exists on server "+CheckDupeSID->GetName()); - return false; - } - /* Now check for fully initialized instances of the server by name */ - TreeServer* CheckDupe = Utils->FindServer(sname); - if (CheckDupe) - { - this->SendError("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 = BufferedSocketNameRequest((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 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+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 "+Instance->Config->GetSID()+" :"+this->Instance->Config->ServerDesc); - // move to the next state, we are now waiting for THEM. - this->LinkState = WAIT_AUTH_2; - return true; + ServerInstance->SNO->WriteToSnoMask('l',"Invalid password on link: %s", x->Name.c_str()); + continue; } + + if (!CheckDuplicate(sname, sid)) + return false; + + ServerInstance->SNO->WriteToSnoMask('l',"Verified incoming server connection " + linkID + " ("+description+")"); + + this->SendCapabilities(2); + + // Save these for later, so when they accept our credentials (indicated by BURST) we remember them + this->capab->hidden = x->Hidden; + this->capab->sid = sid; + this->capab->description = description; + this->capab->name = sname; + + // Send our details: Our server name and description and hopcount of 0, + // along with the sendpass from this block. + this->WriteLine("SERVER "+ServerInstance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 "+ServerInstance->Config->GetSID()+" :"+ServerInstance->Config->ServerDesc); + + // move to the next state, we are now waiting for THEM. + this->LinkState = WAIT_AUTH_2; + return true; } - this->SendError("Invalid credentials"); - this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials"); + + this->SendError("Mismatched server name or password (check the other server's snomask output for details - e.g. umode +s +Ll)"); + ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials"); return false; }