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::Handle(User* user, std::vector<std::string>& params)
36 std::string servername = params[0];
37 // password is not used for a remote server
38 // hopcount is not used (ever)
39 std::string sid = params[3];
40 std::string description = params[4];
41 TreeServer* ParentOfThis = Utils->FindServer(user->server);
42 TreeSocket* socket = ParentOfThis->GetSocket();
47 if (!InspIRCd::IsSID(sid))
49 socket->SendError("Invalid format server ID: "+sid+"!");
52 TreeServer* CheckDupe = Utils->FindServer(servername);
55 socket->SendError("Server "+servername+" already exists!");
56 ServerInstance->SNO->WriteToSnoMask('L', "Server \2"+CheckDupe->GetName()+"\2 being introduced from \2" + ParentOfThis->GetName() + "\2 denied, already exists. Closing link with " + ParentOfThis->GetName());
59 CheckDupe = Utils->FindServer(sid);
62 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.");
63 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());
68 Link* lnk = Utils->FindLink(servername);
70 TreeServer* Node = new TreeServer(servername, description, sid, ParentOfThis, ParentOfThis->GetSocket(), lnk ? lnk->Hidden : false);
72 ParentOfThis->AddChild(Node);
73 ServerInstance->SNO->WriteToSnoMask('L', "Server \002"+ParentOfThis->GetName()+"\002 introduced server \002"+servername+"\002 ("+description+")");
79 * This is used after the other side of a connection has accepted our credentials.
80 * They are then introducing themselves to us, BEFORE either of us burst. -- w
82 bool TreeSocket::Outbound_Reply_Server(parameterlist ¶ms)
84 if (params.size() < 5)
86 SendError("Protocol error - Not enough parameters for SERVER command");
90 irc::string servername = params[0].c_str();
91 std::string sname = params[0];
92 std::string password = params[1];
93 std::string sid = params[3];
94 std::string description = params[4];
96 this->SendCapabilities(2);
98 if (!ServerInstance->IsSID(sid))
100 this->SendError("Invalid format server ID: "+sid+"!");
104 for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
107 if (x->Name != servername && x->Name != "*") // open link allowance
110 if (!ComparePass(*x, password))
112 ServerInstance->SNO->WriteToSnoMask('l',"Invalid password on link: %s", x->Name.c_str());
116 TreeServer* CheckDupe = Utils->FindServer(sname);
119 std::string pname = CheckDupe->GetParent() ? CheckDupe->GetParent()->GetName() : "<ourself>";
120 SendError("Server "+sname+" already exists on server "+pname+"!");
121 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+pname);
124 CheckDupe = Utils->FindServer(sid);
127 this->SendError("Server ID "+sid+" already exists on the network! You may want to specify the server ID for the server manually with <server:id> so they do not conflict.");
128 ServerInstance->SNO->WriteToSnoMask('l',"Server \2"+assign(servername)+"\2 being introduced denied, server ID already exists on the network. Closing link.");
133 * They're in WAIT_AUTH_2 (having accepted our credentials).
134 * Set our state to CONNECTED (since everything's peachy so far) and send our
135 * netburst to them, which will trigger their CONNECTED state, and BURST in reply.
137 * While we're at it, create a treeserver object so we know about them.
140 this->LinkState = CONNECTED;
142 Utils->timeoutlist.erase(this);
145 MyRoot = new TreeServer(sname, description, sid, Utils->TreeRoot, this, x->Hidden);
146 Utils->TreeRoot->AddChild(MyRoot);
147 this->DoBurst(MyRoot);
149 params[4] = ":" + params[4];
151 /* IMPORTANT: Take password/hmac hash OUT of here before we broadcast the introduction! */
153 Utils->DoOneToAllButSender(ServerInstance->Config->GetSID(),"SERVER",params,MyRoot);
158 this->SendError("Invalid credentials (check the other server's linking snomask for more information)");
159 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
163 bool TreeSocket::CheckDuplicate(const std::string& sname, const std::string& sid)
165 /* Check for fully initialized instances of the server by name */
166 TreeServer* CheckDupe = Utils->FindServer(sname);
169 std::string pname = CheckDupe->GetParent() ? CheckDupe->GetParent()->GetName() : "<ourself>";
170 SendError("Server "+sname+" already exists on server "+pname+"!");
171 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+pname);
175 /* Check for fully initialized instances of the server by id */
176 ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Looking for dupe SID %s", sid.c_str());
177 CheckDupe = Utils->FindServerID(sid);
181 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.");
182 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server ID '"+CheckDupe->GetID()+
183 "' already exists on server "+CheckDupe->GetName());
191 * Someone else is attempting to connect to us if this is called. Validate their credentials etc.
194 bool TreeSocket::Inbound_Server(parameterlist ¶ms)
196 if (params.size() < 5)
198 SendError("Protocol error - Missing SID");
202 irc::string servername = params[0].c_str();
203 std::string sname = params[0];
204 std::string password = params[1];
205 std::string sid = params[3];
206 std::string description = params[4];
208 this->SendCapabilities(2);
210 if (!ServerInstance->IsSID(sid))
212 this->SendError("Invalid format server ID: "+sid+"!");
216 for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
219 if (x->Name != servername && x->Name != "*") // open link allowance
222 if (!ComparePass(*x, password))
224 ServerInstance->SNO->WriteToSnoMask('l',"Invalid password on link: %s", x->Name.c_str());
228 if (!CheckDuplicate(sname, sid))
231 ServerInstance->SNO->WriteToSnoMask('l',"Verified incoming server connection " + linkID + " ("+description+")");
233 this->SendCapabilities(2);
235 // Save these for later, so when they accept our credentials (indicated by BURST) we remember them
236 this->capab->hidden = x->Hidden;
237 this->capab->sid = sid;
238 this->capab->description = description;
239 this->capab->name = sname;
241 // Send our details: Our server name and description and hopcount of 0,
242 // along with the sendpass from this block.
243 this->WriteLine("SERVER "+ServerInstance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 "+ServerInstance->Config->GetSID()+" :"+ServerInstance->Config->ServerDesc);
245 // move to the next state, we are now waiting for THEM.
246 this->LinkState = WAIT_AUTH_2;
250 this->SendError("Invalid credentials");
251 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");