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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 "handlers.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 "s_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 "s_log.h" |
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#include "resv.h" |
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#include "msg.h" |
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#include "parse.h" |
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#include "modules.h" |
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#include "common.h" |
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#include "packet.h" |
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#include "watch.h" |
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|
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static void m_nick(struct Client *, struct Client *, int, char **); |
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static void mr_nick(struct Client *, struct Client *, int, char **); |
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static void ms_nick(struct Client *, struct Client *, int, char **); |
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static void ms_uid(struct Client *, struct Client *, int, char **); |
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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, char *, char *); |
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static void uid_from_server(struct Client *, struct Client *, int, char **, |
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time_t, 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_nick_name(const char *, const int); |
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static int clean_user_name(const char *); |
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static int clean_host_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, char *, char *, char *); |
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struct Message nick_msgtab = { |
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"NICK", 0, 0, 1, 0, MFLG_SLOW, 0, |
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{mr_nick, m_nick, ms_nick, m_ignore, m_nick, m_ignore} |
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}; |
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|
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struct Message uid_msgtab = { |
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"UID", 0, 0, 10, 0, MFLG_SLOW, 0, |
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{m_ignore, m_ignore, ms_uid, m_ignore, m_ignore, m_ignore} |
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}; |
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|
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void |
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_modinit(void) |
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{ |
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mod_add_cmd(&nick_msgtab); |
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mod_add_cmd(&uid_msgtab); |
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} |
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|
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void |
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_moddeinit(void) |
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{ |
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mod_del_cmd(&nick_msgtab); |
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mod_del_cmd(&uid_msgtab); |
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} |
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|
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const char *_version = "$Revision$"; |
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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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/*! \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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char nick[NICKLEN]; |
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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, form_str(ERR_NONICKNAMEGIVEN), |
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me.name, EmptyString(parv[0]) ? "*" : parv[0]); |
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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], sizeof(nick)); |
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|
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/* check the nickname is ok */ |
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if (!clean_nick_name(nick, 1)) |
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{ |
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sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), |
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me.name, EmptyString(parv[0]) ? "*" : parv[0], 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 (find_matching_name_conf(NRESV_TYPE, nick, NULL, NULL, 0) && |
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!IsExemptResv(source_p)) |
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{ |
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sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), |
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me.name, EmptyString(parv[0]) ? "*" : parv[0], nick); |
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return; |
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} |
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|
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if ((target_p = 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, form_str(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]; |
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struct Client *target_p = 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, form_str(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 */ |
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if (!IsFloodDone(source_p)) |
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flood_endgrace(source_p); |
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|
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/* terminate nick to NICKLEN */ |
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strlcpy(nick, parv[1], sizeof(nick)); |
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|
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/* check the nickname is ok */ |
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if (!clean_nick_name(nick, 1)) |
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{ |
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sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), |
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me.name, source_p->name, nick); |
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return; |
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} |
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|
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if (find_matching_name_conf(NRESV_TYPE, nick, |
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NULL, NULL, 0) && !IsExemptResv(source_p) && |
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!(IsOper(source_p) && ConfigFileEntry.oper_pass_resv)) |
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{ |
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sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), |
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me.name, source_p->name, nick); |
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return; |
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} |
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|
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if ((target_p = find_client(nick)) == NULL) |
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change_local_nick(client_p, source_p, nick); |
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else if (target_p == source_p) |
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{ |
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/* |
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* If (target_p == source_p) the client is changing nicks between |
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* equivalent nicknames ie: [nick] -> {nick} |
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*/ |
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|
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/* check the nick isnt exactly the same */ |
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if (strcmp(target_p->name, nick)) |
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change_local_nick(client_p, 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(client_p, source_p, nick); |
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} |
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else |
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sendto_one(source_p, form_str(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) |
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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. |
275 |
* \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: |
281 |
* |
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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 |
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* |
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* server introducing new nick |
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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 |
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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] = ircname |
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*/ |
298 |
static void |
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ms_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; |
303 |
time_t newts = 0; |
304 |
|
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if (parc < 2 || EmptyString(parv[1])) |
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return; |
307 |
|
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if (parc == 9) |
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{ |
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struct Client *server_p = find_server(parv[7]); |
311 |
|
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if (server_p == NULL) |
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{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"Invalid server %s from %s for NICK %s", |
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parv[7], source_p->name, parv[1]); |
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sendto_one(client_p, ":%s KILL %s :%s (Server doesn't exist!)", |
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me.name, parv[1], me.name); |
319 |
return; |
320 |
} |
321 |
|
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if (check_clean_nick(client_p, source_p, parv[1], server_p) || |
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check_clean_user(client_p, parv[1], parv[5], server_p) || |
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check_clean_host(client_p, parv[1], parv[6], server_p)) |
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return; |
326 |
|
327 |
if (IsServer(source_p)) |
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newts = atol(parv[3]); |
329 |
} |
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else if (parc == 3) |
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{ |
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if (IsServer(source_p)) |
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/* Servers can't change nicks.. */ |
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return; |
335 |
|
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if (check_clean_nick(client_p, source_p, parv[1], |
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source_p->servptr)) |
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return; |
339 |
|
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newts = atol(parv[2]); |
341 |
} |
342 |
|
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/* if the nick doesnt exist, allow it and process like normal */ |
344 |
if ((target_p = find_client(parv[1])) == NULL) |
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nick_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[8]); |
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else if (IsUnknown(target_p)) |
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{ |
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/* we're not living in the past anymore, an unknown client is local only. */ |
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exit_client(target_p, &me, "Overridden"); |
350 |
nick_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[8]); |
351 |
} |
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else if (target_p == source_p) |
353 |
{ |
354 |
if (strcmp(target_p->name, parv[1])) |
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nick_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[8]); |
356 |
} |
357 |
else |
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perform_nick_collides(source_p, client_p, target_p, parc, parv, |
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newts, parv[1], parv[8], NULL); |
360 |
} |
361 |
|
362 |
|
363 |
/*! \brief UID command handler (called by servers) |
364 |
* |
365 |
* \param client_p Pointer to allocated Client struct with physical connection |
366 |
* to this server, i.e. with an open socket connected. |
367 |
* \param source_p Pointer to allocated Client struct from which the message |
368 |
* originally comes from. This can be a local or remote client. |
369 |
* \param parc Integer holding the number of supplied arguments. |
370 |
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
371 |
* pointers. |
372 |
* \note Valid arguments for this command are: |
373 |
* |
374 |
* - parv[0] = sender prefix |
375 |
* - parv[1] = nickname |
376 |
* - parv[2] = hop count |
377 |
* - parv[3] = TS |
378 |
* - parv[4] = umode |
379 |
* - parv[5] = username |
380 |
* - parv[6] = hostname |
381 |
* - parv[7] = ip |
382 |
* - parv[8] = uid |
383 |
* - parv[9] = ircname (gecos) |
384 |
*/ |
385 |
static void |
386 |
ms_uid(struct Client *client_p, struct Client *source_p, |
387 |
int parc, char *parv[]) |
388 |
{ |
389 |
struct Client *target_p = NULL; |
390 |
time_t newts = 0; |
391 |
|
392 |
if (parc != 10 || EmptyString(parv[9])) |
393 |
return; |
394 |
|
395 |
if (check_clean_nick(client_p, source_p, parv[1], source_p) || |
396 |
check_clean_user(client_p, parv[1], parv[5], source_p) || |
397 |
check_clean_host(client_p, parv[1], parv[6], source_p)) |
398 |
return; |
399 |
|
400 |
newts = atol(parv[3]); |
401 |
|
402 |
/* |
403 |
* if there is an ID collision, kill our client, and kill theirs. |
404 |
* this may generate 401's, but it ensures that both clients always |
405 |
* go, even if the other server refuses to do the right thing. |
406 |
*/ |
407 |
if ((target_p = hash_find_id(parv[8])) != NULL) |
408 |
{ |
409 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
410 |
"ID collision on %s(%s <- %s)(both killed)", |
411 |
target_p->name, target_p->from->name, |
412 |
client_p->name); |
413 |
kill_client_ll_serv_butone(NULL, target_p, "%s (ID collision)", |
414 |
me.name); |
415 |
|
416 |
++ServerStats.is_kill; |
417 |
SetKilled(target_p); |
418 |
exit_client(target_p, &me, "ID Collision"); |
419 |
return; |
420 |
} |
421 |
|
422 |
if ((target_p = find_client(parv[1])) == NULL) |
423 |
uid_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[9]); |
424 |
else if (IsUnknown(target_p)) |
425 |
{ |
426 |
exit_client(target_p, &me, "Overridden"); |
427 |
uid_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[9]); |
428 |
} |
429 |
else |
430 |
perform_nick_collides(source_p, client_p, target_p, |
431 |
parc, parv, newts, parv[1], parv[9], parv[8]); |
432 |
} |
433 |
|
434 |
/* check_clean_nick() |
435 |
* |
436 |
* input - pointer to source |
437 |
* - |
438 |
* - nickname |
439 |
* - truncated nickname |
440 |
* - origin of client |
441 |
* - pointer to server nick is coming from |
442 |
* output - none |
443 |
* side effects - if nickname is erroneous, or a different length to |
444 |
* truncated nickname, return 1 |
445 |
*/ |
446 |
static int |
447 |
check_clean_nick(struct Client *client_p, struct Client *source_p, |
448 |
char *nick, struct Client *server_p) |
449 |
{ |
450 |
/* the old code did some wacky stuff here, if the nick is invalid, kill it |
451 |
* and dont bother messing at all |
452 |
*/ |
453 |
if (!clean_nick_name(nick, 0)) |
454 |
{ |
455 |
++ServerStats.is_kill; |
456 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
457 |
"Bad/long Nick: %s From: %s(via %s)", |
458 |
nick, server_p->name, client_p->name); |
459 |
|
460 |
sendto_one(client_p, ":%s KILL %s :%s (Bad Nickname)", |
461 |
me.name, nick, me.name); |
462 |
|
463 |
/* bad nick change */ |
464 |
if (source_p != client_p) |
465 |
{ |
466 |
kill_client_ll_serv_butone(client_p, source_p, |
467 |
"%s (Bad Nickname)", |
468 |
me.name); |
469 |
SetKilled(source_p); |
470 |
exit_client(source_p, &me, "Bad Nickname"); |
471 |
} |
472 |
|
473 |
return 1; |
474 |
} |
475 |
|
476 |
return 0; |
477 |
} |
478 |
|
479 |
/* check_clean_user() |
480 |
* |
481 |
* input - pointer to client sending data |
482 |
* - nickname |
483 |
* - username to check |
484 |
* - origin of NICK |
485 |
* output - none |
486 |
* side effects - if username is erroneous, return 1 |
487 |
*/ |
488 |
static int |
489 |
check_clean_user(struct Client *client_p, char *nick, |
490 |
char *user, struct Client *server_p) |
491 |
{ |
492 |
if (!clean_user_name(user)) |
493 |
{ |
494 |
++ServerStats.is_kill; |
495 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
496 |
"Bad/Long Username: %s Nickname: %s From: %s(via %s)", |
497 |
user, nick, server_p->name, client_p->name); |
498 |
sendto_one(client_p, ":%s KILL %s :%s (Bad Username)", |
499 |
me.name, nick, me.name); |
500 |
return 1; |
501 |
} |
502 |
|
503 |
return 0; |
504 |
} |
505 |
|
506 |
/* check_clean_host() |
507 |
* |
508 |
* input - pointer to client sending us data |
509 |
* - nickname |
510 |
* - hostname to check |
511 |
* - source name |
512 |
* output - none |
513 |
* side effects - if hostname is erroneous, return 1 |
514 |
*/ |
515 |
static int |
516 |
check_clean_host(struct Client *client_p, char *nick, |
517 |
char *host, struct Client *server_p) |
518 |
{ |
519 |
if (!clean_host_name(host)) |
520 |
{ |
521 |
++ServerStats.is_kill; |
522 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
523 |
"Bad/Long Hostname: %s Nickname: %s From: %s(via %s)", |
524 |
host, nick, server_p->name, client_p->name); |
525 |
sendto_one(client_p, ":%s KILL %s :%s (Bad Hostname)", |
526 |
me.name, nick, me.name); |
527 |
return 1; |
528 |
} |
529 |
|
530 |
return 0; |
531 |
} |
532 |
|
533 |
/* clean_nick_name() |
534 |
* |
535 |
* input - nickname |
536 |
* - whether it's a local nick (1) or remote (0) |
537 |
* output - none |
538 |
* side effects - walks through the nickname, returning 0 if erroneous |
539 |
*/ |
540 |
static int |
541 |
clean_nick_name(const char *nick, const int local) |
542 |
{ |
543 |
const char *p = nick; |
544 |
assert(nick && *nick); |
545 |
|
546 |
/* nicks can't start with a digit or - or be 0 length */ |
547 |
/* This closer duplicates behaviour of hybrid-6 */ |
548 |
if (*p == '-' || (IsDigit(*p) && local) || *p == '\0') |
549 |
return 0; |
550 |
|
551 |
for (; *p; ++p) |
552 |
if (!IsNickChar(*p)) |
553 |
return 0; |
554 |
|
555 |
return p - nick <= (NICKLEN - 1); |
556 |
} |
557 |
|
558 |
/* clean_user_name() |
559 |
* |
560 |
* input - username |
561 |
* output - none |
562 |
* side effects - walks through the username, returning 0 if erroneous |
563 |
*/ |
564 |
static int |
565 |
clean_user_name(const char *user) |
566 |
{ |
567 |
const char *p = user; |
568 |
|
569 |
assert(user && *user); |
570 |
|
571 |
for (; *p; ++p) |
572 |
if (!IsUserChar(*p)) |
573 |
return 0; |
574 |
|
575 |
return p - user <= USERLEN; |
576 |
} |
577 |
|
578 |
/* clean_host_name() |
579 |
* input - hostname |
580 |
* output - none |
581 |
* side effects - walks through the hostname, returning 0 if erroneous |
582 |
*/ |
583 |
static int |
584 |
clean_host_name(const char *host) |
585 |
{ |
586 |
const char *p = host; |
587 |
|
588 |
assert(host && *host); |
589 |
|
590 |
for (; *p; ++p) |
591 |
if (!IsHostChar(*p)) |
592 |
return 0; |
593 |
|
594 |
return p - host <= HOSTLEN; |
595 |
} |
596 |
|
597 |
/* |
598 |
* nick_from_server() |
599 |
*/ |
600 |
static void |
601 |
nick_from_server(struct Client *client_p, struct Client *source_p, int parc, |
602 |
char *parv[], time_t newts, char *nick, char *ngecos) |
603 |
{ |
604 |
int samenick = 0; |
605 |
|
606 |
if (IsServer(source_p)) |
607 |
{ |
608 |
/* A server introducing a new client, change source */ |
609 |
source_p = make_client(client_p); |
610 |
dlinkAdd(source_p, &source_p->node, &global_client_list); |
611 |
|
612 |
if (parc > 2) |
613 |
source_p->hopcount = atoi(parv[2]); |
614 |
if (newts) |
615 |
source_p->tsinfo = newts; |
616 |
else |
617 |
{ |
618 |
newts = source_p->tsinfo = CurrentTime; |
619 |
ts_warn("Remote nick %s (%s) introduced without a TS", nick, parv[0]); |
620 |
} |
621 |
|
622 |
strlcpy(source_p->info, parv[8], sizeof(source_p->info)); |
623 |
/* copy the nick in place */ |
624 |
strcpy(source_p->name, nick); |
625 |
hash_add_client(source_p); |
626 |
|
627 |
if (parc > 8) |
628 |
{ |
629 |
const char *m; |
630 |
|
631 |
/* parse usermodes */ |
632 |
for (m = &parv[4][1]; *m; ++m) |
633 |
{ |
634 |
unsigned int flag = user_modes[(unsigned char)*m]; |
635 |
|
636 |
if (flag & UMODE_INVISIBLE) |
637 |
++Count.invisi; |
638 |
if (flag & UMODE_OPER) |
639 |
++Count.oper; |
640 |
|
641 |
source_p->umodes |= flag & SEND_UMODES; |
642 |
} |
643 |
|
644 |
register_remote_user(source_p, parv[5], parv[6], |
645 |
parv[7], ngecos); |
646 |
return; |
647 |
} |
648 |
} |
649 |
else if (source_p->name[0]) |
650 |
{ |
651 |
samenick = !irccmp(source_p->name, nick); |
652 |
|
653 |
/* client changing their nick */ |
654 |
if (!samenick) |
655 |
{ |
656 |
watch_check_hash(source_p, RPL_LOGOFF); |
657 |
source_p->tsinfo = newts ? newts : CurrentTime; |
658 |
} |
659 |
|
660 |
sendto_common_channels_local(source_p, 1, ":%s!%s@%s NICK :%s", |
661 |
source_p->name,source_p->username, |
662 |
source_p->host, nick); |
663 |
|
664 |
add_history(source_p, 1); |
665 |
sendto_server(client_p, NULL, CAP_TS6, NOCAPS, |
666 |
":%s NICK %s :%lu", |
667 |
ID(source_p), nick, (unsigned long)source_p->tsinfo); |
668 |
sendto_server(client_p, NULL, NOCAPS, CAP_TS6, |
669 |
":%s NICK %s :%lu", |
670 |
source_p->name, nick, (unsigned long)source_p->tsinfo); |
671 |
} |
672 |
|
673 |
/* set the new nick name */ |
674 |
if (source_p->name[0]) |
675 |
hash_del_client(source_p); |
676 |
|
677 |
strcpy(source_p->name, nick); |
678 |
hash_add_client(source_p); |
679 |
|
680 |
if (!samenick) |
681 |
watch_check_hash(source_p, RPL_LOGON); |
682 |
} |
683 |
|
684 |
/* |
685 |
* client_from_server() |
686 |
*/ |
687 |
static void |
688 |
uid_from_server(struct Client *client_p, struct Client *source_p, int parc, |
689 |
char *parv[], time_t newts, char *nick, char *ugecos) |
690 |
{ |
691 |
const char *m = NULL; |
692 |
const char *servername = source_p->name; |
693 |
|
694 |
source_p = make_client(client_p); |
695 |
dlinkAdd(source_p, &source_p->node, &global_client_list); |
696 |
|
697 |
source_p->hopcount = atoi(parv[2]); |
698 |
source_p->tsinfo = newts; |
699 |
|
700 |
/* copy the nick in place */ |
701 |
strcpy(source_p->name, nick); |
702 |
strlcpy(source_p->id, parv[8], sizeof(source_p->id)); |
703 |
strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); |
704 |
strlcpy(source_p->info, parv[9], sizeof(source_p->info)); |
705 |
|
706 |
hash_add_client(source_p); |
707 |
hash_add_id(source_p); |
708 |
|
709 |
/* parse usermodes */ |
710 |
for (m = &parv[4][1]; *m; ++m) |
711 |
{ |
712 |
unsigned int flag = user_modes[(unsigned char)*m]; |
713 |
|
714 |
if (flag & UMODE_INVISIBLE) |
715 |
++Count.invisi; |
716 |
if (flag & UMODE_OPER) |
717 |
++Count.oper; |
718 |
|
719 |
source_p->umodes |= flag & SEND_UMODES; |
720 |
} |
721 |
|
722 |
register_remote_user(source_p, parv[5], parv[6], |
723 |
servername, parv[9]); |
724 |
} |
725 |
|
726 |
static void |
727 |
perform_nick_collides(struct Client *source_p, struct Client *client_p, |
728 |
struct Client *target_p, int parc, char *parv[], |
729 |
time_t newts, char *nick, char *gecos, char *uid) |
730 |
{ |
731 |
int sameuser; |
732 |
|
733 |
/* server introducing new nick */ |
734 |
if (IsServer(source_p)) |
735 |
{ |
736 |
/* if we dont have a ts, or their TS's are the same, kill both */ |
737 |
if (!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) |
738 |
{ |
739 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
740 |
"Nick collision on %s(%s <- %s)(both killed)", |
741 |
target_p->name, target_p->from->name, |
742 |
client_p->name); |
743 |
|
744 |
/* if we have a UID, issue a kill for it */ |
745 |
if (uid) |
746 |
sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", |
747 |
me.id, uid, me.name); |
748 |
|
749 |
kill_client_ll_serv_butone(NULL, target_p, |
750 |
"%s (Nick collision (new))", |
751 |
me.name); |
752 |
++ServerStats.is_kill; |
753 |
sendto_one(target_p, form_str(ERR_NICKCOLLISION), |
754 |
me.name, target_p->name, target_p->name); |
755 |
|
756 |
SetKilled(target_p); |
757 |
exit_client(target_p, &me, "Nick collision (new)"); |
758 |
return; |
759 |
} |
760 |
/* the timestamps are different */ |
761 |
else |
762 |
{ |
763 |
sameuser = !irccmp(target_p->username, parv[5]) && |
764 |
!irccmp(target_p->host, parv[6]); |
765 |
|
766 |
/* if the users are the same (loaded a client on a different server) |
767 |
* and the new users ts is older, or the users are different and the |
768 |
* new users ts is newer, ignore the new client and let it do the kill |
769 |
*/ |
770 |
if ((sameuser && newts < target_p->tsinfo) || |
771 |
(!sameuser && newts > target_p->tsinfo)) |
772 |
{ |
773 |
if (uid) |
774 |
sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", |
775 |
me.id, uid, me.name); |
776 |
return; |
777 |
} |
778 |
else |
779 |
{ |
780 |
if (sameuser) |
781 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
782 |
"Nick collision on %s(%s <- %s)(older killed)", |
783 |
target_p->name, target_p->from->name, |
784 |
client_p->name); |
785 |
else |
786 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
787 |
"Nick collision on %s(%s <- %s)(newer killed)", |
788 |
target_p->name, target_p->from->name, |
789 |
client_p->name); |
790 |
|
791 |
++ServerStats.is_kill; |
792 |
sendto_one(target_p, form_str(ERR_NICKCOLLISION), |
793 |
me.name, target_p->name, target_p->name); |
794 |
|
795 |
/* if it came from a LL server, itd have been source_p, |
796 |
* so we dont need to mark target_p as known |
797 |
*/ |
798 |
kill_client_ll_serv_butone(source_p, target_p, |
799 |
"%s (Nick collision (new))", |
800 |
me.name); |
801 |
|
802 |
SetKilled(target_p); |
803 |
exit_client(target_p, &me, "Nick collision"); |
804 |
|
805 |
if (parc == 9) |
806 |
nick_from_server(client_p, source_p, parc, parv, newts, nick, gecos); |
807 |
else if (parc == 10) |
808 |
uid_from_server(client_p, source_p, parc, parv, newts, nick, gecos); |
809 |
|
810 |
return; |
811 |
} |
812 |
} |
813 |
} |
814 |
|
815 |
/* its a client changing nick and causing a collide */ |
816 |
if (!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) |
817 |
{ |
818 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
819 |
"Nick change collision from %s to %s(%s <- %s)(both killed)", |
820 |
source_p->name, target_p->name, target_p->from->name, |
821 |
client_p->name); |
822 |
|
823 |
sendto_one(target_p, form_str(ERR_NICKCOLLISION), me.name, |
824 |
target_p->name, target_p->name); |
825 |
|
826 |
++ServerStats.is_kill; |
827 |
kill_client_ll_serv_butone(NULL, source_p, "%s (Nick change collision)", |
828 |
me.name); |
829 |
|
830 |
++ServerStats.is_kill; |
831 |
kill_client_ll_serv_butone(NULL, target_p, "%s (Nick change collision)", |
832 |
me.name); |
833 |
|
834 |
SetKilled(target_p); |
835 |
exit_client(target_p, &me, "Nick collision (new)"); |
836 |
|
837 |
SetKilled(source_p); |
838 |
exit_client(source_p, &me, "Nick collision (old)"); |
839 |
return; |
840 |
} |
841 |
else |
842 |
{ |
843 |
sameuser = !irccmp(target_p->username, source_p->username) && |
844 |
!irccmp(target_p->host, source_p->host); |
845 |
|
846 |
if ((sameuser && newts < target_p->tsinfo) || |
847 |
(!sameuser && newts > target_p->tsinfo)) |
848 |
{ |
849 |
if (sameuser) |
850 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
851 |
"Nick change collision from %s to %s(%s <- %s)(older killed)", |
852 |
source_p->name, target_p->name, target_p->from->name, |
853 |
client_p->name); |
854 |
else |
855 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
856 |
"Nick change collision from %s to %s(%s <- %s)(newer killed)", |
857 |
source_p->name, target_p->name, target_p->from->name, |
858 |
client_p->name); |
859 |
|
860 |
++ServerStats.is_kill; |
861 |
kill_client_ll_serv_butone(client_p, source_p, |
862 |
"%s (Nick change collision)", |
863 |
me.name); |
864 |
|
865 |
SetKilled(source_p); |
866 |
|
867 |
if (sameuser) |
868 |
exit_client(source_p, &me, "Nick collision (old)"); |
869 |
else |
870 |
exit_client(source_p, &me, "Nick collision (new)"); |
871 |
return; |
872 |
} |
873 |
else |
874 |
{ |
875 |
if (sameuser) |
876 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
877 |
"Nick collision on %s(%s <- %s)(older killed)", |
878 |
target_p->name, target_p->from->name, |
879 |
client_p->name); |
880 |
else |
881 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
882 |
"Nick collision on %s(%s <- %s)(newer killed)", |
883 |
target_p->name, target_p->from->name, |
884 |
client_p->name); |
885 |
|
886 |
kill_client_ll_serv_butone(source_p, target_p, |
887 |
"%s (Nick collision)", |
888 |
me.name); |
889 |
|
890 |
++ServerStats.is_kill; |
891 |
sendto_one(target_p, form_str(ERR_NICKCOLLISION), |
892 |
me.name, target_p->name, target_p->name); |
893 |
|
894 |
SetKilled(target_p); |
895 |
exit_client(target_p, &me, "Nick collision"); |
896 |
} |
897 |
} |
898 |
|
899 |
/* we should only ever call nick_from_server() here, as |
900 |
* this is a client changing nick, not a new client |
901 |
*/ |
902 |
nick_from_server(client_p, source_p, parc, parv, newts, nick, gecos); |
903 |
} |