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>
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 CmdResult CommandSVSNick::Handle(User* user, std::vector<std::string>& parameters)
28 User* u = ServerInstance->FindNick(parameters[0]);
32 // The 4th parameter is optional and it is the expected nick TS of the target user. If this parameter is
33 // present and it doesn't match the user's nick TS, the SVSNICK is not acted upon.
34 // This makes it possible to detect the case when services wants to change the nick of a user, but the
35 // user changes their nick before the SVSNICK arrives, making the SVSNICK nick change (usually to a guest nick)
36 // unnecessary. Consider the following for example:
38 // 1. test changes nick to Attila which is protected by services
39 // 2. Services SVSNICKs the user to Guest12345
40 // 3. Attila changes nick to Attila_ which isn't protected by services
42 // 5. Attila_ gets his nick changed to Guest12345 unnecessarily
44 // In this case when the SVSNICK is processed the target has already changed his nick to something
45 // which isn't protected, so changing the nick again to a Guest nick is not desired.
46 // However, if the expected nick TS parameter is present in the SVSNICK then the nick change in step 5
47 // won't happen because the timestamps won't match.
48 if (parameters.size() > 3)
50 time_t ExpectedTS = ConvToInt(parameters[3]);
51 if (u->age != ExpectedTS)
52 return CMD_FAILURE; // Ignore SVSNICK
55 std::string nick = parameters[1];
59 time_t NickTS = ConvToInt(parameters[2]);
63 if (!u->ChangeNick(nick, NickTS))
65 // Changing to 'nick' failed (it may already be in use), change to the uuid
66 u->ChangeNick(u->uuid);
73 RouteDescriptor CommandSVSNick::GetRouting(User* user, const std::vector<std::string>& parameters)
75 return ROUTE_OPT_UCAST(parameters[0]);