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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2007 InspIRCd Development Team
* See: http://www.inspircd.org/wiki/index.php/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include "xline.h"
#include "commands/cmd_nick.h"
extern "C" DllExport Command* init_command(InspIRCd* Instance)
{
return new cmd_nick(Instance);
}
/** Handle nick changes from users.
* NOTE: If you are used to ircds based on ircd2.8, and are looking
* for the client introduction code in here, youre in the wrong place.
* You need to look in the spanningtree module for this!
*/
CmdResult cmd_nick::Handle (const char** parameters, int pcnt, User *user)
{
char oldnick[NICKMAX];
if (!*parameters[0] || !*user->nick)
{
/* We cant put blanks in the parameters, so for this (extremely rare) issue we just put '*' here. */
user->WriteServ("432 %s * :Erroneous Nickname", *user->nick ? user->nick : "*");
return CMD_FAILURE;
}
if (irc::string(user->nick) == irc::string(parameters[0]))
{
/* If its exactly the same, even case, dont do anything. */
if (!strcmp(user->nick,parameters[0]))
return CMD_SUCCESS;
/* Its a change of case. People insisted that they should be
* able to do silly things like this even though the RFC says
* the nick AAA is the same as the nick aaa.
*/
strlcpy(oldnick, user->nick, NICKMAX - 1);
int MOD_RESULT = 0;
FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,parameters[0]));
if (MOD_RESULT)
return CMD_FAILURE;
if (user->registered == REG_ALL)
user->WriteCommon("NICK %s",parameters[0]);
strlcpy(user->nick, parameters[0], NICKMAX - 1);
user->InvalidateCache();
FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));
return CMD_SUCCESS;
}
else
{
QLine* mq = ServerInstance->XLines->matches_qline(parameters[0]);
if (mq)
{
ServerInstance->SNO->WriteToSnoMask('x', "Q-Lined nickname %s from %s!%s@%s: %s", parameters[0], user->nick, user->ident, user->host, mq->reason);
user->WriteServ("432 %s %s :Invalid nickname: %s",user->nick,parameters[0], mq->reason);
return CMD_FAILURE;
}
/*
* Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
* then we have a potential collide. Check whether someone else is camping on the nick
* (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
* camper to their UID, and allow the incoming nick change.
*
* If the guy using the nick is already using it, tell the incoming nick change to gtfo,
* because the nick is already (rightfully) in use. -- w00t
*/
User* InUse = ServerInstance->FindNickOnly(parameters[0]);
if (InUse && (InUse != user) && ((ServerInstance->IsNick(parameters[0]) || allowinvalid)))
{
if (InUse->registered != REG_ALL)
{
/* force the camper to their UUID, and ask them to re-send a NICK. */
InUse->WriteTo(InUse, "NICK %s", InUse->uuid);
InUse->WriteServ("433 %s %s :Nickname overruled.", InUse->nick, InUse->nick);
InUse->UpdateNickHash(InUse->uuid);
strlcpy(InUse->nick, InUse->uuid, NICKMAX - 1);
InUse->InvalidateCache();
InUse->registered &= ~REG_NICK;
}
else
{
/* No camping, tell the incoming user to stop trying to change nick ;p */
user->WriteServ("433 %s %s :Nickname is already in use.", user->registered >= REG_NICK ? user->nick : "*", parameters[0]);
return CMD_FAILURE;
}
}
}
if (((!ServerInstance->IsNick(parameters[0]))) && (IS_LOCAL(user)))
{
if (!allowinvalid)
{
user->WriteServ("432 %s %s :Erroneous Nickname",user->nick,parameters[0]);
return CMD_FAILURE;
}
}
int MOD_RESULT = 0;
FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,parameters[0]));
if (MOD_RESULT)
// if a module returns true, the nick change is silently forbidden.
return CMD_FAILURE;
if (user->registered == REG_ALL)
user->WriteCommon("NICK %s",parameters[0]);
strlcpy(oldnick, user->nick, NICKMAX - 1);
/* change the nick of the user in the users_hash */
user = user->UpdateNickHash(parameters[0]);
/* actually change the nick within the record */
if (!user)
return CMD_FAILURE;
if (!*user->nick)
return CMD_FAILURE;
strlcpy(user->nick, parameters[0], NICKMAX - 1);
user->InvalidateCache();
/* Update display nicks */
for (UCListIter v = user->chans.begin(); v != user->chans.end(); v++)
{
CUList* ulist = v->first->GetUsers();
CUList::iterator i = ulist->find(user);
if (i != ulist->end())
i->second = user->nick;
}
if (user->registered < REG_NICKUSER)
{
user->registered = (user->registered | REG_NICK);
}
else if (user->registered == REG_NICKUSER)
{
/* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
int MOD_RESULT = 0;
FOREACH_RESULT(I_OnUserRegister,OnUserRegister(user));
if (MOD_RESULT > 0)
return CMD_FAILURE;
}
else if (user->registered == REG_ALL)
{
FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));
}
return CMD_SUCCESS;
}
CmdResult cmd_nick::HandleInternal(const unsigned int id, const std::deque<classbase*> ¶meters)
{
allowinvalid = (id != 0);
return CMD_SUCCESS;
}
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