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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* m_nick.c: Sets a users nick. |
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* |
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* Copyright (C) 2002 by the past and present ircd coders, and others. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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* |
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* $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "list.h" |
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#include "client.h" |
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#include "hash.h" |
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#include "fdlist.h" |
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#include "irc_string.h" |
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#include "ircd.h" |
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#include "numeric.h" |
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#include "conf.h" |
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#include "s_user.h" |
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#include "whowas.h" |
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#include "s_serv.h" |
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#include "send.h" |
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#include "channel.h" |
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#include "channel_mode.h" |
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#include "log.h" |
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#include "resv.h" |
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#include "parse.h" |
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#include "modules.h" |
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#include "packet.h" |
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#include "watch.h" |
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#include "s_misc.h" |
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|
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|
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static void nick_from_server(struct Client *, struct Client *, int, char **, |
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time_t, const char *, char *, char *); |
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static void uid_from_server(struct Client *, struct Client *, int, char **, |
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time_t, const char *, char *, char *); |
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static int check_clean_nick(struct Client *client_p, struct Client *source_p, |
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char *nick, struct Client *server_p); |
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static int check_clean_user(struct Client *client_p, char *nick, char *user, |
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struct Client *server_p); |
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static int check_clean_host(struct Client *client_p, char *nick, char *host, |
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struct Client *server_p); |
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|
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static int clean_user_name(const char *); |
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static void perform_nick_collides(struct Client *, struct Client *, struct Client *, |
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int, char **, time_t, const char *, char *, char *, char *); |
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|
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|
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/* set_initial_nick() |
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* |
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* inputs |
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* output |
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* side effects - |
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* |
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* This function is only called to set up an initially registering |
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* client. |
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*/ |
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static void |
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set_initial_nick(struct Client *source_p, const char *nick) |
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{ |
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/* Client setting NICK the first time */ |
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|
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/* This had to be copied here to avoid problems.. */ |
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source_p->tsinfo = CurrentTime; |
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source_p->localClient->registration &= ~REG_NEED_NICK; |
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|
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if (source_p->name[0]) |
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hash_del_client(source_p); |
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|
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strlcpy(source_p->name, nick, sizeof(source_p->name)); |
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hash_add_client(source_p); |
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|
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/* fd_desc is long enough */ |
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fd_note(&source_p->localClient->fd, "Nick: %s", nick); |
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|
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if (!source_p->localClient->registration) |
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register_local_user(source_p); |
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} |
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|
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/* change_local_nick() |
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* |
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* inputs - pointer to server |
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* - pointer to client |
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* - nick |
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* output - |
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* side effects - changes nick of a LOCAL user |
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*/ |
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static void |
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change_local_nick(struct Client *source_p, const char *nick) |
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{ |
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assert(source_p->name[0] && !EmptyString(nick)); |
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assert(MyConnect(source_p)); |
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|
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/* |
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* Client just changing his/her nick. If he/she is |
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* on a channel, send note of change to all clients |
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* on that channel. Propagate notice to other servers. |
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*/ |
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if ((source_p->localClient->last_nick_change + |
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ConfigFileEntry.max_nick_time) < CurrentTime) |
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source_p->localClient->number_of_nick_changes = 0; |
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source_p->localClient->last_nick_change = CurrentTime; |
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source_p->localClient->number_of_nick_changes++; |
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|
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if ((ConfigFileEntry.anti_nick_flood && |
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(source_p->localClient->number_of_nick_changes |
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<= ConfigFileEntry.max_nick_changes)) || |
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!ConfigFileEntry.anti_nick_flood || |
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(HasUMode(source_p, UMODE_OPER) && ConfigFileEntry.no_oper_flood)) |
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{ |
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int samenick = !irccmp(source_p->name, nick); |
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|
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if (!samenick) |
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{ |
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source_p->tsinfo = CurrentTime; |
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clear_ban_cache_client(source_p); |
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watch_check_hash(source_p, RPL_LOGOFF); |
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|
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if (HasUMode(source_p, UMODE_REGISTERED)) |
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{ |
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unsigned int oldmodes = source_p->umodes; |
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char modebuf[IRCD_BUFSIZE] = { '\0' }; |
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|
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DelUMode(source_p, UMODE_REGISTERED); |
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send_umode(source_p, source_p, oldmodes, 0xffffffff, modebuf); |
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} |
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} |
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|
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/* XXX - the format of this notice should eventually be changed |
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* to either %s[%s@%s], or even better would be get_client_name() -bill |
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*/ |
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sendto_realops_flags(UMODE_NCHANGE, L_ALL, SEND_NOTICE, |
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"Nick change: From %s to %s [%s@%s]", |
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source_p->name, nick, source_p->username, source_p->host); |
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sendto_common_channels_local(source_p, 1, 0, ":%s!%s@%s NICK :%s", |
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source_p->name, source_p->username, |
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source_p->host, nick); |
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add_history(source_p, 1); |
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|
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sendto_server(source_p, CAP_TS6, NOCAPS, |
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":%s NICK %s :%lu", |
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ID(source_p), nick, (unsigned long)source_p->tsinfo); |
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sendto_server(source_p, NOCAPS, CAP_TS6, |
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":%s NICK %s :%lu", |
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source_p->name, nick, (unsigned long)source_p->tsinfo); |
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|
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hash_del_client(source_p); |
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strcpy(source_p->name, nick); |
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hash_add_client(source_p); |
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|
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if (!samenick) |
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watch_check_hash(source_p, RPL_LOGON); |
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|
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/* fd_desc is long enough */ |
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fd_note(&source_p->localClient->fd, "Nick: %s", nick); |
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} |
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else |
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sendto_one(source_p, ERR_NICKTOOFAST, |
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me.name, source_p->name, source_p->name, |
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nick, ConfigFileEntry.max_nick_time); |
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} |
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|
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/*! \brief NICK command handler (called by unregistered, |
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* locally connected clients) |
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* |
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* \param client_p Pointer to allocated Client struct with physical connection |
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* to this server, i.e. with an open socket connected. |
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* \param source_p Pointer to allocated Client struct from which the message |
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* originally comes from. This can be a local or remote client. |
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* \param parc Integer holding the number of supplied arguments. |
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* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
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* pointers. |
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* \note Valid arguments for this command are: |
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* - parv[0] = sender prefix |
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* - parv[1] = nickname |
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*/ |
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static void |
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mr_nick(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
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{ |
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struct Client *target_p = NULL; |
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struct MaskItem *conf = NULL; |
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char nick[NICKLEN + 1]; |
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char *s = NULL; |
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|
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if (parc < 2 || EmptyString(parv[1])) |
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{ |
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sendto_one(source_p, ERR_NONICKNAMEGIVEN, me.name, |
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source_p->name[0] ? source_p->name : "*"); |
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return; |
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} |
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|
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/* Terminate the nick at the first ~ */ |
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if ((s = strchr(parv[1], '~')) != NULL) |
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*s = '\0'; |
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|
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/* copy the nick and terminate it */ |
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strlcpy(nick, parv[1], IRCD_MIN(sizeof(nick), ServerInfo.max_nick_length + 1)); |
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|
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/* check the nickname is ok */ |
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if (!valid_nickname(nick, 1)) |
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{ |
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sendto_one(source_p, ERR_ERRONEUSNICKNAME, me.name, |
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source_p->name[0] ? source_p->name : "*", parv[1]); |
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return; |
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} |
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|
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/* check if the nick is resv'd */ |
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if ((conf = find_matching_name_conf(CONF_NRESV, nick, NULL, NULL, 0))) |
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{ |
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++conf->count; |
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sendto_one(source_p, ERR_ERRONEUSNICKNAME, me.name, |
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source_p->name[0] ? source_p->name : "*", nick); |
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sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE, |
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"Forbidding reserved nick [%s] from user %s", |
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nick, get_client_name(client_p, HIDE_IP)); |
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return; |
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} |
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|
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if ((target_p = hash_find_client(nick)) == NULL) |
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set_initial_nick(source_p, nick); |
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else if (source_p == target_p) |
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strlcpy(source_p->name, nick, sizeof(source_p->name)); |
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else |
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sendto_one(source_p, ERR_NICKNAMEINUSE, me.name, "*", nick); |
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} |
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|
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|
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/*! \brief NICK command handler (called by already registered, |
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* locally connected clients) |
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* |
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* \param client_p Pointer to allocated Client struct with physical connection |
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* to this server, i.e. with an open socket connected. |
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* \param source_p Pointer to allocated Client struct from which the message |
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* originally comes from. This can be a local or remote client. |
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* \param parc Integer holding the number of supplied arguments. |
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* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
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* pointers. |
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* \note Valid arguments for this command are: |
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* - parv[0] = sender prefix |
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* - parv[1] = nickname |
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*/ |
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static void |
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m_nick(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
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{ |
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char nick[NICKLEN + 1]; |
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struct Client *target_p = NULL; |
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struct MaskItem *conf = NULL; |
266 |
|
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assert(source_p == client_p); |
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|
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if (parc < 2 || EmptyString(parv[1])) |
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{ |
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sendto_one(source_p, ERR_NONICKNAMEGIVEN, |
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me.name, source_p->name); |
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return; |
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} |
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|
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/* mark end of grace period, to prevent nickflooding */ |
277 |
if (!IsFloodDone(source_p)) |
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flood_endgrace(source_p); |
279 |
|
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/* terminate nick to NICKLEN */ |
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strlcpy(nick, parv[1], IRCD_MIN(sizeof(nick), ServerInfo.max_nick_length + 1)); |
282 |
|
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/* check the nickname is ok */ |
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if (!valid_nickname(nick, 1)) |
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{ |
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sendto_one(source_p, ERR_ERRONEUSNICKNAME, |
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me.name, source_p->name, nick); |
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return; |
289 |
} |
290 |
|
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|
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if (!IsExemptResv(source_p) && |
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!(HasUMode(source_p, UMODE_OPER) && ConfigFileEntry.oper_pass_resv) && |
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(conf = find_matching_name_conf(CONF_NRESV, nick, NULL, NULL, 0))) |
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{ |
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++conf->count; |
297 |
sendto_one(source_p, ERR_ERRONEUSNICKNAME, |
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me.name, source_p->name, nick); |
299 |
sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE, |
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"Forbidding reserved nick [%s] from user %s", |
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nick, get_client_name(client_p, HIDE_IP)); |
302 |
return; |
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} |
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|
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if ((target_p = hash_find_client(nick)) == NULL) |
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change_local_nick(source_p, nick); |
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else if (target_p == source_p) |
308 |
{ |
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/* |
310 |
* If (target_p == source_p) the client is changing nicks between |
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* equivalent nicknames ie: [nick] -> {nick} |
312 |
*/ |
313 |
|
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/* check the nick isnt exactly the same */ |
315 |
if (strcmp(target_p->name, nick)) |
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change_local_nick(source_p, nick); |
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} |
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else if (IsUnknown(target_p)) |
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{ |
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/* |
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* if the client that has the nick isn't registered yet (nick but no |
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* user) then drop the unregged client |
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*/ |
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exit_client(target_p, &me, "Overridden"); |
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change_local_nick(source_p, nick); |
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} |
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else |
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sendto_one(source_p, ERR_NICKNAMEINUSE, me.name, |
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source_p->name, nick); |
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} |
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|
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|
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/*! \brief NICK command handler (called by servers and remotely |
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* connected clients) |
335 |
* |
336 |
* \param client_p Pointer to allocated Client struct with physical connection |
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* to this server, i.e. with an open socket connected. |
338 |
* \param source_p Pointer to allocated Client struct from which the message |
339 |
* originally comes from. This can be a local or remote client. |
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* \param parc Integer holding the number of supplied arguments. |
341 |
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
342 |
* pointers. |
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* \note Valid arguments for this command are: |
344 |
* |
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* server -> server nick change |
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* - parv[0] = sender prefix |
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* - parv[1] = nickname |
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* - parv[2] = TS when nick change |
349 |
* |
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* server introducing new nick (without services support) |
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* - parv[0] = sender prefix |
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* - parv[1] = nickname |
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* - parv[2] = hop count |
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* - parv[3] = TS |
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* - parv[4] = umode |
356 |
* - parv[5] = username |
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* - parv[6] = hostname |
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* - parv[7] = server |
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* - parv[8] = ircname |
360 |
* |
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* server introducing new nick (with services support) |
362 |
* - parv[0] = sender prefix |
363 |
* - parv[1] = nickname |
364 |
* - parv[2] = hop count |
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* - parv[3] = TS |
366 |
* - parv[4] = umode |
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* - parv[5] = username |
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* - parv[6] = hostname |
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* - parv[7] = server |
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* - parv[8] = services id (timestamp) |
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* - parv[9] = ircname |
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*/ |
373 |
static void |
374 |
ms_nick(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
376 |
{ |
377 |
struct Client *target_p = NULL; |
378 |
time_t newts = 0; |
379 |
const char *svsid = "0"; |
380 |
|
381 |
if (parc < 3 || EmptyString(parv[parc - 1])) |
382 |
return; |
383 |
|
384 |
if (parc >= 9) |
385 |
{ |
386 |
struct Client *server_p = hash_find_server(parv[7]); |
387 |
|
388 |
if (server_p == NULL) |
389 |
{ |
390 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
391 |
"Invalid server %s from %s for NICK %s", |
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parv[7], source_p->name, parv[1]); |
393 |
sendto_one(client_p, ":%s KILL %s :%s (Server doesn't exist!)", |
394 |
me.name, parv[1], me.name); |
395 |
return; |
396 |
} |
397 |
|
398 |
if (check_clean_nick(client_p, source_p, parv[1], server_p) || |
399 |
check_clean_user(client_p, parv[1], parv[5], server_p) || |
400 |
check_clean_host(client_p, parv[1], parv[6], server_p)) |
401 |
return; |
402 |
|
403 |
if (IsServer(source_p)) |
404 |
newts = atol(parv[3]); |
405 |
if (IsServer(source_p) && parc == 10) |
406 |
svsid = parv[8]; |
407 |
} |
408 |
else if (parc == 3) |
409 |
{ |
410 |
if (IsServer(source_p)) |
411 |
/* Servers can't change nicks.. */ |
412 |
return; |
413 |
|
414 |
if (check_clean_nick(client_p, source_p, parv[1], |
415 |
source_p->servptr)) |
416 |
return; |
417 |
|
418 |
newts = atol(parv[2]); |
419 |
} |
420 |
|
421 |
/* if the nick doesnt exist, allow it and process like normal */ |
422 |
if ((target_p = hash_find_client(parv[1])) == NULL) |
423 |
nick_from_server(client_p, source_p, parc, parv, newts, svsid, parv[1], parv[parc-1]); |
424 |
else if (IsUnknown(target_p)) |
425 |
{ |
426 |
/* we're not living in the past anymore, an unknown client is local only. */ |
427 |
exit_client(target_p, &me, "Overridden"); |
428 |
nick_from_server(client_p, source_p, parc, parv, newts, svsid, parv[1], parv[parc-1]); |
429 |
} |
430 |
else if (target_p == source_p) |
431 |
{ |
432 |
if (strcmp(target_p->name, parv[1])) |
433 |
nick_from_server(client_p, source_p, parc, parv, newts, svsid, parv[1], parv[parc-1]); |
434 |
} |
435 |
else |
436 |
perform_nick_collides(source_p, client_p, target_p, parc, parv, |
437 |
newts, svsid, parv[1], parv[parc-1], NULL); |
438 |
} |
439 |
|
440 |
|
441 |
/*! \brief UID command handler (called by servers) |
442 |
* |
443 |
* \param client_p Pointer to allocated Client struct with physical connection |
444 |
* to this server, i.e. with an open socket connected. |
445 |
* \param source_p Pointer to allocated Client struct from which the message |
446 |
* originally comes from. This can be a local or remote client. |
447 |
* \param parc Integer holding the number of supplied arguments. |
448 |
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
449 |
* pointers. |
450 |
* \note Valid arguments for this command are: |
451 |
* |
452 |
* server introducing new nick (without services support) |
453 |
* - parv[0] = sender prefix |
454 |
* - parv[1] = nickname |
455 |
* - parv[2] = hop count |
456 |
* - parv[3] = TS |
457 |
* - parv[4] = umode |
458 |
* - parv[5] = username |
459 |
* - parv[6] = hostname |
460 |
* - parv[7] = ip |
461 |
* - parv[8] = uid |
462 |
* - parv[9] = ircname (gecos) |
463 |
* |
464 |
* server introducing new nick (with services support) |
465 |
* - parv[ 0] = sender prefix |
466 |
* - parv[ 1] = nickname |
467 |
* - parv[ 2] = hop count |
468 |
* - parv[ 3] = TS |
469 |
* - parv[ 4] = umode |
470 |
* - parv[ 5] = username |
471 |
* - parv[ 6] = hostname |
472 |
* - parv[ 7] = ip |
473 |
* - parv[ 8] = uid |
474 |
* - parv[ 9] = services id (timestamp) |
475 |
* - parv[10] = ircname (gecos) |
476 |
*/ |
477 |
static void |
478 |
ms_uid(struct Client *client_p, struct Client *source_p, |
479 |
int parc, char *parv[]) |
480 |
{ |
481 |
struct Client *target_p = NULL; |
482 |
time_t newts = 0; |
483 |
const char *svsid = "0"; |
484 |
|
485 |
if (parc < 10 || EmptyString(parv[parc-1])) |
486 |
return; |
487 |
|
488 |
if (check_clean_nick(client_p, source_p, parv[1], source_p) || |
489 |
check_clean_user(client_p, parv[1], parv[5], source_p) || |
490 |
check_clean_host(client_p, parv[1], parv[6], source_p)) |
491 |
return; |
492 |
|
493 |
newts = atol(parv[3]); |
494 |
svsid = parc == 11 ? parv[9] : "0"; |
495 |
|
496 |
/* |
497 |
* if there is an ID collision, kill our client, and kill theirs. |
498 |
* this may generate 401's, but it ensures that both clients always |
499 |
* go, even if the other server refuses to do the right thing. |
500 |
*/ |
501 |
if ((target_p = hash_find_id(parv[8])) != NULL) |
502 |
{ |
503 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
504 |
"ID collision on %s(%s <- %s)(both killed)", |
505 |
target_p->name, target_p->from->name, |
506 |
client_p->name); |
507 |
kill_client_ll_serv_butone(NULL, target_p, "%s (ID collision)", |
508 |
me.name); |
509 |
|
510 |
++ServerStats.is_kill; |
511 |
AddFlag(target_p, FLAGS_KILLED); |
512 |
exit_client(target_p, &me, "ID Collision"); |
513 |
return; |
514 |
} |
515 |
|
516 |
if ((target_p = hash_find_client(parv[1])) == NULL) |
517 |
uid_from_server(client_p, source_p, parc, parv, newts, svsid, parv[1], parv[parc-1]); |
518 |
else if (IsUnknown(target_p)) |
519 |
{ |
520 |
exit_client(target_p, &me, "Overridden"); |
521 |
uid_from_server(client_p, source_p, parc, parv, newts, svsid, parv[1], parv[parc-1]); |
522 |
} |
523 |
else |
524 |
perform_nick_collides(source_p, client_p, target_p, parc, parv, newts, svsid, parv[1], |
525 |
parv[parc-1], parv[8]); |
526 |
} |
527 |
|
528 |
/* check_clean_nick() |
529 |
* |
530 |
* input - pointer to source |
531 |
* - |
532 |
* - nickname |
533 |
* - truncated nickname |
534 |
* - origin of client |
535 |
* - pointer to server nick is coming from |
536 |
* output - none |
537 |
* side effects - if nickname is erroneous, or a different length to |
538 |
* truncated nickname, return 1 |
539 |
*/ |
540 |
static int |
541 |
check_clean_nick(struct Client *client_p, struct Client *source_p, |
542 |
char *nick, struct Client *server_p) |
543 |
{ |
544 |
/* the old code did some wacky stuff here, if the nick is invalid, kill it |
545 |
* and dont bother messing at all |
546 |
*/ |
547 |
if (!valid_nickname(nick, 0)) |
548 |
{ |
549 |
++ServerStats.is_kill; |
550 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE, |
551 |
"Bad/long Nick: %s From: %s(via %s)", |
552 |
nick, server_p->name, client_p->name); |
553 |
|
554 |
sendto_one(client_p, ":%s KILL %s :%s (Bad Nickname)", |
555 |
me.name, nick, me.name); |
556 |
|
557 |
/* bad nick change */ |
558 |
if (source_p != client_p) |
559 |
{ |
560 |
kill_client_ll_serv_butone(client_p, source_p, |
561 |
"%s (Bad Nickname)", |
562 |
me.name); |
563 |
AddFlag(source_p, FLAGS_KILLED); |
564 |
exit_client(source_p, &me, "Bad Nickname"); |
565 |
} |
566 |
|
567 |
return 1; |
568 |
} |
569 |
|
570 |
return 0; |
571 |
} |
572 |
|
573 |
/* check_clean_user() |
574 |
* |
575 |
* input - pointer to client sending data |
576 |
* - nickname |
577 |
* - username to check |
578 |
* - origin of NICK |
579 |
* output - none |
580 |
* side effects - if username is erroneous, return 1 |
581 |
*/ |
582 |
static int |
583 |
check_clean_user(struct Client *client_p, char *nick, |
584 |
char *user, struct Client *server_p) |
585 |
{ |
586 |
if (!clean_user_name(user)) |
587 |
{ |
588 |
++ServerStats.is_kill; |
589 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE, |
590 |
"Bad/Long Username: %s Nickname: %s From: %s(via %s)", |
591 |
user, nick, server_p->name, client_p->name); |
592 |
sendto_one(client_p, ":%s KILL %s :%s (Bad Username)", |
593 |
me.name, nick, me.name); |
594 |
return 1; |
595 |
} |
596 |
|
597 |
return 0; |
598 |
} |
599 |
|
600 |
/* check_clean_host() |
601 |
* |
602 |
* input - pointer to client sending us data |
603 |
* - nickname |
604 |
* - hostname to check |
605 |
* - source name |
606 |
* output - none |
607 |
* side effects - if hostname is erroneous, return 1 |
608 |
*/ |
609 |
static int |
610 |
check_clean_host(struct Client *client_p, char *nick, |
611 |
char *host, struct Client *server_p) |
612 |
{ |
613 |
if (!valid_hostname(host)) |
614 |
{ |
615 |
++ServerStats.is_kill; |
616 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE, |
617 |
"Bad/Long Hostname: %s Nickname: %s From: %s(via %s)", |
618 |
host, nick, server_p->name, client_p->name); |
619 |
sendto_one(client_p, ":%s KILL %s :%s (Bad Hostname)", |
620 |
me.name, nick, me.name); |
621 |
return 1; |
622 |
} |
623 |
|
624 |
return 0; |
625 |
} |
626 |
|
627 |
/* clean_user_name() |
628 |
* |
629 |
* input - username |
630 |
* output - none |
631 |
* side effects - walks through the username, returning 0 if erroneous |
632 |
*/ |
633 |
static int |
634 |
clean_user_name(const char *user) |
635 |
{ |
636 |
const char *p = user; |
637 |
|
638 |
assert(user && *user); |
639 |
|
640 |
for (; *p; ++p) |
641 |
if (!IsUserChar(*p)) |
642 |
return 0; |
643 |
|
644 |
return p - user <= USERLEN; |
645 |
} |
646 |
|
647 |
/* |
648 |
* nick_from_server() |
649 |
*/ |
650 |
static void |
651 |
nick_from_server(struct Client *client_p, struct Client *source_p, int parc, |
652 |
char *parv[], time_t newts, const char *svsid, char *nick, char *ngecos) |
653 |
{ |
654 |
int samenick = 0; |
655 |
|
656 |
if (IsServer(source_p)) |
657 |
{ |
658 |
/* A server introducing a new client, change source */ |
659 |
source_p = make_client(client_p); |
660 |
dlinkAdd(source_p, &source_p->node, &global_client_list); |
661 |
|
662 |
if (parc > 2) |
663 |
source_p->hopcount = atoi(parv[2]); |
664 |
if (newts) |
665 |
source_p->tsinfo = newts; |
666 |
else |
667 |
{ |
668 |
newts = source_p->tsinfo = CurrentTime; |
669 |
ts_warn("Remote nick %s (%s) introduced without a TS", nick, parv[0]); |
670 |
} |
671 |
|
672 |
strlcpy(source_p->svid, svsid, sizeof(source_p->svid)); |
673 |
strlcpy(source_p->info, ngecos, sizeof(source_p->info)); |
674 |
/* copy the nick in place */ |
675 |
strlcpy(source_p->name, nick, sizeof(source_p->name)); |
676 |
hash_add_client(source_p); |
677 |
|
678 |
if (parc > 8) |
679 |
{ |
680 |
const char *m; |
681 |
|
682 |
/* parse usermodes */ |
683 |
for (m = &parv[4][1]; *m; ++m) |
684 |
{ |
685 |
unsigned int flag = user_modes[(unsigned char)*m]; |
686 |
|
687 |
if ((flag & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE)) |
688 |
++Count.invisi; |
689 |
if ((flag & UMODE_OPER) && !HasUMode(source_p, UMODE_OPER)) |
690 |
++Count.oper; |
691 |
|
692 |
source_p->umodes |= flag & SEND_UMODES; |
693 |
} |
694 |
|
695 |
register_remote_user(source_p, parv[5], parv[6], |
696 |
parv[7], ngecos); |
697 |
return; |
698 |
} |
699 |
} |
700 |
else if (source_p->name[0]) |
701 |
{ |
702 |
samenick = !irccmp(source_p->name, nick); |
703 |
|
704 |
/* client changing their nick */ |
705 |
if (!samenick) |
706 |
{ |
707 |
DelUMode(source_p, UMODE_REGISTERED); |
708 |
watch_check_hash(source_p, RPL_LOGOFF); |
709 |
source_p->tsinfo = newts ? newts : CurrentTime; |
710 |
} |
711 |
|
712 |
sendto_common_channels_local(source_p, 1, 0, ":%s!%s@%s NICK :%s", |
713 |
source_p->name,source_p->username, |
714 |
source_p->host, nick); |
715 |
|
716 |
add_history(source_p, 1); |
717 |
sendto_server(client_p, CAP_TS6, NOCAPS, |
718 |
":%s NICK %s :%lu", |
719 |
ID(source_p), nick, (unsigned long)source_p->tsinfo); |
720 |
sendto_server(client_p, NOCAPS, CAP_TS6, |
721 |
":%s NICK %s :%lu", |
722 |
source_p->name, nick, (unsigned long)source_p->tsinfo); |
723 |
} |
724 |
|
725 |
/* set the new nick name */ |
726 |
if (source_p->name[0]) |
727 |
hash_del_client(source_p); |
728 |
|
729 |
strlcpy(source_p->name, nick, sizeof(source_p->name)); |
730 |
hash_add_client(source_p); |
731 |
|
732 |
if (!samenick) |
733 |
watch_check_hash(source_p, RPL_LOGON); |
734 |
} |
735 |
|
736 |
/* |
737 |
* client_from_server() |
738 |
*/ |
739 |
static void |
740 |
uid_from_server(struct Client *client_p, struct Client *source_p, int parc, |
741 |
char *parv[], time_t newts, const char *svsid, char *nick, char *ugecos) |
742 |
{ |
743 |
const char *m = NULL; |
744 |
const char *servername = source_p->name; |
745 |
|
746 |
source_p = make_client(client_p); |
747 |
dlinkAdd(source_p, &source_p->node, &global_client_list); |
748 |
|
749 |
source_p->hopcount = atoi(parv[2]); |
750 |
source_p->tsinfo = newts; |
751 |
strlcpy(source_p->svid, svsid, sizeof(source_p->svid)); |
752 |
|
753 |
/* copy the nick in place */ |
754 |
strcpy(source_p->name, nick); |
755 |
strlcpy(source_p->id, parv[8], sizeof(source_p->id)); |
756 |
strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); |
757 |
strlcpy(source_p->info, ugecos, sizeof(source_p->info)); |
758 |
|
759 |
hash_add_client(source_p); |
760 |
hash_add_id(source_p); |
761 |
|
762 |
/* parse usermodes */ |
763 |
for (m = &parv[4][1]; *m; ++m) |
764 |
{ |
765 |
unsigned int flag = user_modes[(unsigned char)*m]; |
766 |
|
767 |
if ((flag & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE)) |
768 |
++Count.invisi; |
769 |
if ((flag & UMODE_OPER) && !HasUMode(source_p, UMODE_OPER)) |
770 |
++Count.oper; |
771 |
|
772 |
source_p->umodes |= flag & SEND_UMODES; |
773 |
} |
774 |
|
775 |
register_remote_user(source_p, parv[5], parv[6], |
776 |
servername, ugecos); |
777 |
} |
778 |
|
779 |
static void |
780 |
perform_nick_collides(struct Client *source_p, struct Client *client_p, |
781 |
struct Client *target_p, int parc, char *parv[], |
782 |
time_t newts, const char *svsid, char *nick, char *gecos, char *uid) |
783 |
{ |
784 |
int sameuser; |
785 |
|
786 |
/* server introducing new nick */ |
787 |
if (IsServer(source_p)) |
788 |
{ |
789 |
/* if we dont have a ts, or their TS's are the same, kill both */ |
790 |
if (!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) |
791 |
{ |
792 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
793 |
"Nick collision on %s(%s <- %s)(both killed)", |
794 |
target_p->name, target_p->from->name, |
795 |
client_p->name); |
796 |
|
797 |
/* if we have a UID, issue a kill for it */ |
798 |
if (uid) |
799 |
sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", |
800 |
me.id, uid, me.name); |
801 |
|
802 |
kill_client_ll_serv_butone(NULL, target_p, |
803 |
"%s (Nick collision (new))", |
804 |
me.name); |
805 |
++ServerStats.is_kill; |
806 |
sendto_one(target_p, ERR_NICKCOLLISION, |
807 |
me.name, target_p->name, target_p->name); |
808 |
|
809 |
AddFlag(target_p, FLAGS_KILLED); |
810 |
exit_client(target_p, &me, "Nick collision (new)"); |
811 |
return; |
812 |
} |
813 |
/* the timestamps are different */ |
814 |
else |
815 |
{ |
816 |
sameuser = !irccmp(target_p->username, parv[5]) && |
817 |
!irccmp(target_p->host, parv[6]); |
818 |
|
819 |
/* if the users are the same (loaded a client on a different server) |
820 |
* and the new users ts is older, or the users are different and the |
821 |
* new users ts is newer, ignore the new client and let it do the kill |
822 |
*/ |
823 |
if ((sameuser && newts < target_p->tsinfo) || |
824 |
(!sameuser && newts > target_p->tsinfo)) |
825 |
{ |
826 |
if (uid) |
827 |
sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", |
828 |
me.id, uid, me.name); |
829 |
return; |
830 |
} |
831 |
else |
832 |
{ |
833 |
if (sameuser) |
834 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
835 |
"Nick collision on %s(%s <- %s)(older killed)", |
836 |
target_p->name, target_p->from->name, |
837 |
client_p->name); |
838 |
else |
839 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
840 |
"Nick collision on %s(%s <- %s)(newer killed)", |
841 |
target_p->name, target_p->from->name, |
842 |
client_p->name); |
843 |
|
844 |
++ServerStats.is_kill; |
845 |
sendto_one(target_p, ERR_NICKCOLLISION, |
846 |
me.name, target_p->name, target_p->name); |
847 |
|
848 |
/* if it came from a LL server, itd have been source_p, |
849 |
* so we dont need to mark target_p as known |
850 |
*/ |
851 |
kill_client_ll_serv_butone(source_p, target_p, |
852 |
"%s (Nick collision (new))", |
853 |
me.name); |
854 |
|
855 |
AddFlag(target_p, FLAGS_KILLED); |
856 |
exit_client(target_p, &me, "Nick collision"); |
857 |
|
858 |
if (!uid && (parc == 9 || parc == 10)) |
859 |
nick_from_server(client_p, source_p, parc, parv, newts, svsid, nick, gecos); |
860 |
else if (uid && (parc == 10 || parc == 11)) |
861 |
uid_from_server(client_p, source_p, parc, parv, newts, svsid, nick, gecos); |
862 |
|
863 |
return; |
864 |
} |
865 |
} |
866 |
} |
867 |
|
868 |
/* its a client changing nick and causing a collide */ |
869 |
if (!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) |
870 |
{ |
871 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
872 |
"Nick change collision from %s to %s(%s <- %s)(both killed)", |
873 |
source_p->name, target_p->name, target_p->from->name, |
874 |
client_p->name); |
875 |
|
876 |
sendto_one(target_p, ERR_NICKCOLLISION, me.name, |
877 |
target_p->name, target_p->name); |
878 |
|
879 |
++ServerStats.is_kill; |
880 |
kill_client_ll_serv_butone(NULL, source_p, "%s (Nick change collision)", |
881 |
me.name); |
882 |
|
883 |
++ServerStats.is_kill; |
884 |
kill_client_ll_serv_butone(NULL, target_p, "%s (Nick change collision)", |
885 |
me.name); |
886 |
|
887 |
AddFlag(target_p, FLAGS_KILLED); |
888 |
exit_client(target_p, &me, "Nick collision (new)"); |
889 |
|
890 |
AddFlag(source_p, FLAGS_KILLED); |
891 |
exit_client(source_p, &me, "Nick collision (old)"); |
892 |
return; |
893 |
} |
894 |
else |
895 |
{ |
896 |
sameuser = !irccmp(target_p->username, source_p->username) && |
897 |
!irccmp(target_p->host, source_p->host); |
898 |
|
899 |
if ((sameuser && newts < target_p->tsinfo) || |
900 |
(!sameuser && newts > target_p->tsinfo)) |
901 |
{ |
902 |
if (sameuser) |
903 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
904 |
"Nick change collision from %s to %s(%s <- %s)(older killed)", |
905 |
source_p->name, target_p->name, target_p->from->name, |
906 |
client_p->name); |
907 |
else |
908 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
909 |
"Nick change collision from %s to %s(%s <- %s)(newer killed)", |
910 |
source_p->name, target_p->name, target_p->from->name, |
911 |
client_p->name); |
912 |
|
913 |
++ServerStats.is_kill; |
914 |
kill_client_ll_serv_butone(client_p, source_p, |
915 |
"%s (Nick change collision)", |
916 |
me.name); |
917 |
|
918 |
AddFlag(source_p, FLAGS_KILLED); |
919 |
|
920 |
if (sameuser) |
921 |
exit_client(source_p, &me, "Nick collision (old)"); |
922 |
else |
923 |
exit_client(source_p, &me, "Nick collision (new)"); |
924 |
return; |
925 |
} |
926 |
else |
927 |
{ |
928 |
if (sameuser) |
929 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
930 |
"Nick collision on %s(%s <- %s)(older killed)", |
931 |
target_p->name, target_p->from->name, |
932 |
client_p->name); |
933 |
else |
934 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
935 |
"Nick collision on %s(%s <- %s)(newer killed)", |
936 |
target_p->name, target_p->from->name, |
937 |
client_p->name); |
938 |
|
939 |
kill_client_ll_serv_butone(source_p, target_p, |
940 |
"%s (Nick collision)", |
941 |
me.name); |
942 |
|
943 |
++ServerStats.is_kill; |
944 |
sendto_one(target_p, ERR_NICKCOLLISION, |
945 |
me.name, target_p->name, target_p->name); |
946 |
|
947 |
AddFlag(target_p, FLAGS_KILLED); |
948 |
exit_client(target_p, &me, "Nick collision"); |
949 |
} |
950 |
} |
951 |
|
952 |
/* we should only ever call nick_from_server() here, as |
953 |
* this is a client changing nick, not a new client |
954 |
*/ |
955 |
nick_from_server(client_p, source_p, parc, parv, newts, svsid, nick, gecos); |
956 |
} |
957 |
|
958 |
static struct Message nick_msgtab = { |
959 |
"NICK", 0, 0, 0, MAXPARA, MFLG_SLOW, 0, |
960 |
{mr_nick, m_nick, ms_nick, m_ignore, m_nick, m_ignore} |
961 |
}; |
962 |
|
963 |
static struct Message uid_msgtab = { |
964 |
"UID", 0, 0, 10, MAXPARA, MFLG_SLOW, 0, |
965 |
{m_ignore, m_ignore, ms_uid, m_ignore, m_ignore, m_ignore} |
966 |
}; |
967 |
|
968 |
static void |
969 |
module_init(void) |
970 |
{ |
971 |
mod_add_cmd(&uid_msgtab); |
972 |
mod_add_cmd(&nick_msgtab); |
973 |
} |
974 |
|
975 |
static void |
976 |
module_exit(void) |
977 |
{ |
978 |
mod_del_cmd(&uid_msgtab); |
979 |
mod_del_cmd(&nick_msgtab); |
980 |
} |
981 |
|
982 |
struct module module_entry = { |
983 |
.node = { NULL, NULL, NULL }, |
984 |
.name = NULL, |
985 |
.version = "$Revision$", |
986 |
.handle = NULL, |
987 |
.modinit = module_init, |
988 |
.modexit = module_exit, |
989 |
.flags = MODULE_FLAG_CORE |
990 |
}; |