1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2008 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
16 #include "commands/cmd_nick.h"
18 extern "C" DllExport Command* init_command(InspIRCd* Instance)
20 return new CommandNick(Instance);
23 /** Handle nick changes from users.
24 * NOTE: If you are used to ircds based on ircd2.8, and are looking
25 * for the client introduction code in here, youre in the wrong place.
26 * You need to look in the spanningtree module for this!
28 CmdResult CommandNick::Handle (const std::vector<std::string>& parameters, User *user)
32 if (parameters[0].empty())
34 /* We cant put blanks in the parameters, so for this (extremely rare) issue we just put '*' here. */
35 user->WriteNumeric(432, "%s * :Erroneous Nickname", user->nick.empty() ? user->nick.c_str() : "*");
39 if (((!ServerInstance->IsNick(parameters[0].c_str(), ServerInstance->Config->Limits.NickMax))) && (IS_LOCAL(user)))
43 if (parameters[0] == "0")
45 // Special case, Fake a /nick UIDHERE. Useful for evading "ERR: NICK IN USE" on connect etc.
46 std::vector<std::string> p2;
47 std::deque<classbase*> dummy;
48 p2.push_back(user->uuid);
49 this->HandleInternal(1, dummy);
50 this->Handle(p2, user);
51 this->HandleInternal(0, dummy);
55 user->WriteNumeric(432, "%s %s :Erroneous Nickname", user->nick.c_str(),parameters[0].c_str());
60 if (assign(user->nick) == parameters[0])
62 /* If its exactly the same, even case, dont do anything. */
63 if (parameters[0] == user->nick)
68 /* Its a change of case. People insisted that they should be
69 * able to do silly things like this even though the RFC says
70 * the nick AAA is the same as the nick aaa.
72 oldnick.assign(user->nick, 0, ServerInstance->Config->Limits.NickMax);
74 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,parameters[0]));
77 if (user->registered == REG_ALL)
78 user->WriteCommon("NICK %s",parameters[0].c_str());
79 user->nick.assign(parameters[0], 0, ServerInstance->Config->Limits.NickMax);
80 user->InvalidateCache();
81 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));
87 * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
88 * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
89 * Thanks Kein for finding this. -- w00t
91 * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
94 if (!allowinvalid || !IS_LOCAL(user))
96 XLine* mq = ServerInstance->XLines->MatchesLine("Q",parameters[0]);
99 if (user->registered == REG_ALL)
101 ServerInstance->SNO->WriteToSnoMask('x', "Q-Lined nickname %s from %s!%s@%s: %s", parameters[0].c_str(), user->nick.c_str(), user->ident.c_str(), user->host.c_str(), mq->reason);
103 user->WriteNumeric(432, "%s %s :Invalid nickname: %s",user->nick.c_str(), parameters[0].c_str(), mq->reason);
109 * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
110 * then we have a potential collide. Check whether someone else is camping on the nick
111 * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
112 * camper to their UID, and allow the incoming nick change.
114 * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
115 * because the nick is already (rightfully) in use. -- w00t
117 User* InUse = ServerInstance->FindNickOnly(parameters[0]);
118 if (InUse && (InUse != user))
120 if (InUse->registered != REG_ALL)
122 /* force the camper to their UUID, and ask them to re-send a NICK. */
123 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
124 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
125 InUse->UpdateNickHash(InUse->uuid.c_str());
126 InUse->nick.assign(InUse->uuid, 0, ServerInstance->Config->Limits.NickMax);
127 InUse->InvalidateCache();
128 InUse->registered &= ~REG_NICK;
132 /* No camping, tell the incoming user to stop trying to change nick ;p */
133 user->WriteNumeric(433, "%s %s :Nickname is already in use.", user->registered >= REG_NICK ? user->nick.c_str() : "*", parameters[0].c_str());
141 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user, parameters[0]));
143 // if a module returns true, the nick change is silently forbidden.
146 if (user->registered == REG_ALL)
147 user->WriteCommon("NICK %s", parameters[0].c_str());
149 oldnick.assign(user->nick, 0, ServerInstance->Config->Limits.NickMax);
151 /* change the nick of the user in the users_hash */
152 user = user->UpdateNickHash(parameters[0].c_str());
154 /* actually change the nick within the record */
158 user->nick.assign(parameters[0], 0, ServerInstance->Config->Limits.NickMax);
159 user->InvalidateCache();
161 /* Update display nicks */
162 for (UCListIter v = user->chans.begin(); v != user->chans.end(); v++)
164 CUList* ulist = v->first->GetUsers();
165 CUList::iterator i = ulist->find(user);
166 if (i != ulist->end())
167 i->second = user->nick;
170 if (user->registered < REG_NICKUSER)
172 user->registered = (user->registered | REG_NICK);
175 // Keep these seperate!
177 if (user->registered == REG_NICKUSER)
179 /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
181 FOREACH_RESULT(I_OnUserRegister,OnUserRegister(user));
185 else if (user->registered == REG_ALL)
187 user->IncreasePenalty(10);
188 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user, oldnick));
195 CmdResult CommandNick::HandleInternal(const unsigned int id, const std::deque<classbase*>&)
197 allowinvalid = (id != 0);