2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2010 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
6 * Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
8 * This file is part of InspIRCd. InspIRCd is free software: you can
9 * redistribute it and/or modify it under the terms of the GNU General Public
10 * License as published by the Free Software Foundation, version 2.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "treeserver.h"
27 #include "remoteuser.h"
29 CmdResult CommandUID::HandleServer(TreeServer* remoteserver, CommandBase::Params& params)
32 * 0 1 2 3 4 5 6 7 8 9 (n-1)
33 * UID uuid age nick host dhost ident ip.string signon +modes (modepara) :real
35 time_t age_t = ServerCommand::ExtractTS(params[1]);
36 time_t signon = ServerCommand::ExtractTS(params[7]);
38 const std::string& modestr = params[8];
40 // Check if the length of the uuid is correct and confirm the sid portion of the uuid matches the sid of the server introducing the user
41 if (params[0].length() != UIDGenerator::UUID_LENGTH || params[0].compare(0, 3, remoteserver->GetID()))
42 throw ProtocolException("Bogus UUID");
43 // Sanity check on mode string: must begin with '+'
44 if (modestr[0] != '+')
45 throw ProtocolException("Invalid mode string");
47 // See if there is a nick collision
48 User* collideswith = ServerInstance->FindNickOnly(params[2]);
49 if ((collideswith) && (collideswith->registered != REG_ALL))
51 // User that the incoming user is colliding with is not fully registered, we force nick change the
52 // unregistered user to their uuid and tell them what happened
53 LocalUser* const localuser = static_cast<LocalUser*>(collideswith);
54 localuser->OverruleNick();
56 else if (collideswith)
58 // The user on this side is registered, handle the collision
59 bool they_change = Utils->DoCollision(collideswith, remoteserver, age_t, params[5], params[6], params[0], "UID");
62 // The client being introduced needs to change nick to uuid, change the nick in the message before
63 // processing/forwarding it. Also change the nick TS to CommandSave::SavedTimestamp.
64 age_t = CommandSave::SavedTimestamp;
65 params[1] = ConvToStr(CommandSave::SavedTimestamp);
66 params[2] = params[0];
70 /* For remote users, we pass the UUID they sent to the constructor.
71 * If the UUID already exists User::User() throws an exception which causes this connection to be closed.
73 RemoteUser* _new = new SpanningTree::RemoteUser(params[0], remoteserver);
74 ServerInstance->Users->clientlist[params[2]] = _new;
75 _new->nick = params[2];
76 _new->ChangeRealHost(params[3], false);
77 _new->ChangeDisplayedHost(params[4]);
78 _new->ident = params[5];
79 _new->ChangeRealName(params.back());
80 _new->registered = REG_ALL;
81 _new->signon = signon;
84 unsigned int paramptr = 9;
86 for (std::string::const_iterator v = modestr.begin(); v != modestr.end(); ++v)
88 // Accept more '+' chars, for now
92 /* For each mode thats set, find the mode handler and set it on the new user */
93 ModeHandler* mh = ServerInstance->Modes->FindMode(*v, MODETYPE_USER);
95 throw ProtocolException("Unrecognised mode '" + std::string(1, *v) + "'");
97 if (mh->NeedsParam(true))
99 if (paramptr >= params.size() - 1)
100 throw ProtocolException("Out of parameters while processing modes");
101 std::string mp = params[paramptr++];
103 * All modes are assumed to succeed here as they are being set by a remote server.
104 * Modes CANNOT FAIL here. If they DO fail, then the failure is ignored. This is important
105 * to note as all but one modules currently cannot ever fail in this situation, except for
106 * m_servprotect which specifically works this way to prevent the mode being set ANYWHERE
107 * but here, at client introduction. You may safely assume this behaviour is standard and
108 * will not change in future versions if you want to make use of this protective behaviour
111 mh->OnModeChange(_new, _new, NULL, mp, true);
114 mh->OnModeChange(_new, _new, NULL, empty, true);
115 _new->SetMode(mh, true);
118 _new->SetClientIP(params[6]);
120 ServerInstance->Users->AddClone(_new);
121 remoteserver->UserCount++;
125 if ((Utils->quiet_bursts && remoteserver->IsBehindBursting()) || _new->server->IsSilentULine())
129 ServerInstance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s (%s) [%s]", remoteserver->GetName().c_str(), _new->GetFullRealHost().c_str(), _new->GetIPString().c_str(), _new->GetRealName().c_str());
131 FOREACH_MOD(OnPostConnect, (_new));
136 CmdResult CommandFHost::HandleRemote(RemoteUser* src, Params& params)
138 src->ChangeDisplayedHost(params[0]);
142 CmdResult CommandFIdent::HandleRemote(RemoteUser* src, Params& params)
144 src->ChangeIdent(params[0]);
148 CmdResult CommandFName::HandleRemote(RemoteUser* src, Params& params)
150 src->ChangeRealName(params[0]);
154 CommandUID::Builder::Builder(User* user)
155 : CmdBuilder(TreeServer::Get(user), "UID")
160 push(user->GetRealHost());
161 push(user->GetDisplayedHost());
163 push(user->GetIPString());
164 push_int(user->signon);
165 push(user->GetModeLetters(true));
166 push_last(user->GetRealName());