2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
7 * This file is part of InspIRCd. InspIRCd is free software: you can
8 * redistribute it and/or modify it under the terms of the GNU General Public
9 * License as published by the Free Software Foundation, version 2.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "treeserver.h"
27 #include "treesocket.h"
31 * Some server somewhere in the network introducing another server.
34 CmdResult CommandServer::HandleServer(TreeServer* ParentOfThis, std::vector<std::string>& params)
36 const std::string& servername = params[0];
37 // password is not used for a remote server
38 // hopcount is not used (ever)
39 const std::string& sid = params[3];
40 const std::string& description = params.back();
41 TreeSocket* socket = ParentOfThis->GetSocket();
43 if (!InspIRCd::IsSID(sid))
45 socket->SendError("Invalid format server ID: "+sid+"!");
48 TreeServer* CheckDupe = Utils->FindServer(servername);
51 socket->SendError("Server "+servername+" already exists!");
52 ServerInstance->SNO->WriteToSnoMask('L', "Server \2"+CheckDupe->GetName()+"\2 being introduced from \2" + ParentOfThis->GetName() + "\2 denied, already exists. Closing link with " + ParentOfThis->GetName());
55 CheckDupe = Utils->FindServer(sid);
58 socket->SendError("Server ID "+sid+" already exists! You may want to specify the server ID for the server manually with <server:id> so they do not conflict.");
59 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());
64 Link* lnk = Utils->FindLink(servername);
66 TreeServer* Node = new TreeServer(servername, description, sid, ParentOfThis, ParentOfThis->GetSocket(), lnk ? lnk->Hidden : false);
68 ServerInstance->SNO->WriteToSnoMask('L', "Server \002"+ParentOfThis->GetName()+"\002 introduced server \002"+servername+"\002 ("+description+")");
72 Link* TreeSocket::AuthRemote(const parameterlist& params)
74 if (params.size() < 5)
76 SendError("Protocol error - Not enough parameters for SERVER command");
80 irc::string servername = params[0].c_str();
81 const std::string& sname = params[0];
82 const std::string& password = params[1];
83 const std::string& sid = params[3];
84 const std::string& description = params.back();
86 this->SendCapabilities(2);
88 if (!ServerInstance->IsSID(sid))
90 this->SendError("Invalid format server ID: "+sid+"!");
94 for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
97 if (x->Name != servername && x->Name != "*") // open link allowance
100 if (!ComparePass(*x, password))
102 ServerInstance->SNO->WriteToSnoMask('l',"Invalid password on link: %s", x->Name.c_str());
106 if (!CheckDuplicate(sname, sid))
109 ServerInstance->SNO->WriteToSnoMask('l',"Verified server connection " + linkID + " ("+description+")");
113 this->SendError("Mismatched server name or password (check the other server's snomask output for details - e.g. umode +s +Ll)");
114 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
119 * This is used after the other side of a connection has accepted our credentials.
120 * They are then introducing themselves to us, BEFORE either of us burst. -- w
122 bool TreeSocket::Outbound_Reply_Server(parameterlist ¶ms)
124 const Link* x = AuthRemote(params);
128 * They're in WAIT_AUTH_2 (having accepted our credentials).
129 * Set our state to CONNECTED (since everything's peachy so far) and send our
130 * netburst to them, which will trigger their CONNECTED state, and BURST in reply.
132 * While we're at it, create a treeserver object so we know about them.
135 FinishAuth(params[0], params[3], params.back(), x->Hidden);
143 bool TreeSocket::CheckDuplicate(const std::string& sname, const std::string& sid)
145 /* Check for fully initialized instances of the server by name */
146 TreeServer* CheckDupe = Utils->FindServer(sname);
149 std::string pname = CheckDupe->GetParent() ? CheckDupe->GetParent()->GetName() : "<ourself>";
150 SendError("Server "+sname+" already exists on server "+pname+"!");
151 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+pname);
155 /* Check for fully initialized instances of the server by id */
156 ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Looking for dupe SID %s", sid.c_str());
157 CheckDupe = Utils->FindServerID(sid);
161 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 <server:id> so they do not conflict.");
162 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server ID '"+CheckDupe->GetID()+
163 "' already exists on server "+CheckDupe->GetName());
171 * Someone else is attempting to connect to us if this is called. Validate their credentials etc.
174 bool TreeSocket::Inbound_Server(parameterlist ¶ms)
176 const Link* x = AuthRemote(params);
179 // Save these for later, so when they accept our credentials (indicated by BURST) we remember them
180 this->capab->hidden = x->Hidden;
181 this->capab->sid = params[3];
182 this->capab->description = params.back();
183 this->capab->name = params[0];
185 // Send our details: Our server name and description and hopcount of 0,
186 // along with the sendpass from this block.
187 this->WriteLine("SERVER "+ServerInstance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 "+ServerInstance->Config->GetSID()+" :"+ServerInstance->Config->ServerDesc);
189 // move to the next state, we are now waiting for THEM.
190 this->LinkState = WAIT_AUTH_2;
197 CommandServer::Builder::Builder(TreeServer* server)
198 : CmdBuilder(server->GetParent()->GetID(), "SERVER")
200 push(server->GetName());
202 push_raw(server->GetID());
203 push_last(server->GetDesc());