diff options
Diffstat (limited to 'src/commands/cmd_nick.cpp')
| -rw-r--r-- | src/commands/cmd_nick.cpp | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/commands/cmd_nick.cpp b/src/commands/cmd_nick.cpp new file mode 100644 index 000000000..52e562d02 --- /dev/null +++ b/src/commands/cmd_nick.cpp @@ -0,0 +1,169 @@ +/* +------------------------------------+ + * | 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 CommandNick(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 CommandNick::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 CommandNick::HandleInternal(const unsigned int id, const std::deque<classbase*> ¶meters) +{ + allowinvalid = (id != 0); + return CMD_SUCCESS; +} + |