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/>.
25 #include "treeserver.h"
26 #include "treesocket.h"
28 /* $ModDep: m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/treesocket.h m_spanningtree/link.h */
31 * Some server somewhere in the network introducing another server.
34 bool TreeSocket::RemoteServer(const std::string &prefix, parameterlist ¶ms)
36 if (params.size() < 5)
38 SendError("Protocol error - Not enough parameters for SERVER command");
42 std::string servername = params[0];
43 // password is not used for a remote server
44 // hopcount is not used (ever)
45 std::string sid = params[3];
46 std::string description = params[4];
47 TreeServer* ParentOfThis = Utils->FindServer(prefix);
51 this->SendError("Protocol error - Introduced remote server from unknown server "+prefix);
54 if (!InspIRCd::IsSID(sid))
56 this->SendError("Invalid format server ID: "+sid+"!");
59 TreeServer* CheckDupe = Utils->FindServer(servername);
62 this->SendError("Server "+servername+" already exists!");
63 ServerInstance->SNO->WriteToSnoMask('L', "Server \2"+CheckDupe->GetName()+"\2 being introduced from \2" + ParentOfThis->GetName() + "\2 denied, already exists. Closing link with " + ParentOfThis->GetName());
66 CheckDupe = Utils->FindServer(sid);
69 this->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.");
70 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());
75 Link* lnk = Utils->FindLink(servername);
77 TreeServer *Node = new TreeServer(Utils, servername, description, sid, ParentOfThis,NULL, lnk ? lnk->Hidden : false);
79 ParentOfThis->AddChild(Node);
80 params[4] = ":" + params[4];
81 Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
82 ServerInstance->SNO->WriteToSnoMask('L', "Server \002"+ParentOfThis->GetName()+"\002 introduced server \002"+servername+"\002 ("+description+")");
88 * This is used after the other side of a connection has accepted our credentials.
89 * They are then introducing themselves to us, BEFORE either of us burst. -- w
91 bool TreeSocket::Outbound_Reply_Server(parameterlist ¶ms)
93 if (params.size() < 5)
95 SendError("Protocol error - Not enough parameters for SERVER command");
99 irc::string servername = params[0].c_str();
100 std::string sname = params[0];
101 std::string password = params[1];
102 std::string sid = params[3];
103 std::string description = params[4];
105 this->SendCapabilities(2);
107 if (!ServerInstance->IsSID(sid))
109 this->SendError("Invalid format server ID: "+sid+"!");
113 for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
116 if (x->Name != servername && x->Name != "*") // open link allowance
119 if (!ComparePass(*x, password))
121 ServerInstance->SNO->WriteToSnoMask('l',"Invalid password on link: %s", x->Name.c_str());
125 TreeServer* CheckDupe = Utils->FindServer(sname);
128 std::string pname = CheckDupe->GetParent() ? CheckDupe->GetParent()->GetName() : "<ourself>";
129 SendError("Server "+sname+" already exists on server "+pname+"!");
130 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+pname);
133 CheckDupe = Utils->FindServer(sid);
136 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.");
137 ServerInstance->SNO->WriteToSnoMask('l',"Server \2"+assign(servername)+"\2 being introduced denied, server ID already exists on the network. Closing link.");
142 * They're in WAIT_AUTH_2 (having accepted our credentials).
143 * Set our state to CONNECTED (since everything's peachy so far) and send our
144 * netburst to them, which will trigger their CONNECTED state, and BURST in reply.
146 * While we're at it, create a treeserver object so we know about them.
149 this->LinkState = CONNECTED;
151 Utils->timeoutlist.erase(this);
154 MyRoot = new TreeServer(Utils, sname, description, sid, Utils->TreeRoot, this, x->Hidden);
155 Utils->TreeRoot->AddChild(MyRoot);
156 this->DoBurst(MyRoot);
158 params[4] = ":" + params[4];
160 /* IMPORTANT: Take password/hmac hash OUT of here before we broadcast the introduction! */
162 Utils->DoOneToAllButSender(ServerInstance->Config->GetSID(),"SERVER",params,sname);
167 this->SendError("Invalid credentials (check the other server's linking snomask for more information)");
168 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
172 bool TreeSocket::CheckDuplicate(const std::string& sname, const std::string& sid)
174 /* Check for fully initialized instances of the server by name */
175 TreeServer* CheckDupe = Utils->FindServer(sname);
178 std::string pname = CheckDupe->GetParent() ? CheckDupe->GetParent()->GetName() : "<ourself>";
179 SendError("Server "+sname+" already exists on server "+pname+"!");
180 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+pname);
184 /* Check for fully initialized instances of the server by id */
185 ServerInstance->Logs->Log("m_spanningtree", LOG_DEBUG, "Looking for dupe SID %s", sid.c_str());
186 CheckDupe = Utils->FindServerID(sid);
190 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.");
191 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server ID '"+CheckDupe->GetID()+
192 "' already exists on server "+CheckDupe->GetName());
200 * Someone else is attempting to connect to us if this is called. Validate their credentials etc.
203 bool TreeSocket::Inbound_Server(parameterlist ¶ms)
205 if (params.size() < 5)
207 SendError("Protocol error - Missing SID");
211 irc::string servername = params[0].c_str();
212 std::string sname = params[0];
213 std::string password = params[1];
214 std::string sid = params[3];
215 std::string description = params[4];
217 this->SendCapabilities(2);
219 if (!ServerInstance->IsSID(sid))
221 this->SendError("Invalid format server ID: "+sid+"!");
225 for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
228 if (x->Name != servername && x->Name != "*") // open link allowance
231 if (!ComparePass(*x, password))
233 ServerInstance->SNO->WriteToSnoMask('l',"Invalid password on link: %s", x->Name.c_str());
237 if (!CheckDuplicate(sname, sid))
240 ServerInstance->SNO->WriteToSnoMask('l',"Verified incoming server connection " + linkID + " ("+description+")");
242 this->SendCapabilities(2);
244 // Save these for later, so when they accept our credentials (indicated by BURST) we remember them
245 this->capab->hidden = x->Hidden;
246 this->capab->sid = sid;
247 this->capab->description = description;
248 this->capab->name = sname;
250 // Send our details: Our server name and description and hopcount of 0,
251 // along with the sendpass from this block.
252 this->WriteLine("SERVER "+ServerInstance->Config->ServerName+" "+this->MakePass(x->SendPass, this->GetTheirChallenge())+" 0 "+ServerInstance->Config->GetSID()+" :"+ServerInstance->Config->ServerDesc);
254 // move to the next state, we are now waiting for THEM.
255 this->LinkState = WAIT_AUTH_2;
259 this->SendError("Invalid credentials");
260 ServerInstance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");