1 |
adx |
30 |
/* |
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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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knight |
31 |
* $Id$ |
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adx |
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*/ |
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#include "stdinc.h" |
26 |
michael |
1011 |
#include "list.h" |
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adx |
30 |
#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" |
47 |
michael |
876 |
#include "watch.h" |
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adx |
30 |
|
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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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54 |
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static void nick_from_server(struct Client *, struct Client *, int, char **, |
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time_t, char *, char *); |
56 |
michael |
981 |
static void uid_from_server(struct Client *, struct Client *, int, char **, |
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adx |
30 |
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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michael |
981 |
char *nick, struct Client *server_p); |
60 |
adx |
30 |
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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michael |
981 |
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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adx |
30 |
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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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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#ifndef STATIC_MODULES |
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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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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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knight |
31 |
const char *_version = "$Revision$"; |
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adx |
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#endif |
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michael |
981 |
|
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michael |
1002 |
/* 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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michael |
1003 |
set_initial_nick(struct Client *source_p, const char *nick) |
110 |
michael |
1002 |
{ |
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/* Client setting NICK the first time */ |
112 |
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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; |
116 |
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if (source_p->name[0]) |
118 |
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hash_del_client(source_p); |
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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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/* fd_desc is long enough */ |
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michael |
1003 |
fd_note(&source_p->localClient->fd, "Nick: %s", nick); |
125 |
michael |
1002 |
|
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if (!source_p->localClient->registration) |
127 |
michael |
1080 |
register_local_user(source_p); |
128 |
michael |
1002 |
} |
129 |
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michael |
981 |
/*! \brief NICK command handler (called by unregistered, |
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* locally connected clients) |
132 |
adx |
30 |
* |
133 |
michael |
981 |
* \param client_p Pointer to allocated Client struct with physical connection |
134 |
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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. |
140 |
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* \note Valid arguments for this command are: |
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* - parv[0] = sender prefix |
142 |
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* - parv[1] = nickname |
143 |
adx |
30 |
*/ |
144 |
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static void |
145 |
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mr_nick(struct Client *client_p, struct Client *source_p, |
146 |
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int parc, char *parv[]) |
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{ |
148 |
michael |
885 |
struct Client *target_p = NULL; |
149 |
adx |
30 |
char nick[NICKLEN]; |
150 |
michael |
885 |
char *s = NULL; |
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152 |
adx |
30 |
if (parc < 2 || EmptyString(parv[1])) |
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{ |
154 |
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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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} |
158 |
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159 |
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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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/* copy the nick and terminate it */ |
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strlcpy(nick, parv[1], sizeof(nick)); |
165 |
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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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} |
173 |
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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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} |
182 |
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183 |
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if ((target_p = find_client(nick)) == NULL) |
184 |
michael |
1003 |
set_initial_nick(source_p, nick); |
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adx |
30 |
else if (source_p == target_p) |
186 |
michael |
1080 |
strlcpy(source_p->name, nick, sizeof(source_p->name)); |
187 |
adx |
30 |
else |
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sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, "*", nick); |
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} |
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michael |
981 |
|
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/*! \brief NICK command handler (called by already registered, |
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* locally connected clients) |
194 |
adx |
30 |
* |
195 |
michael |
981 |
* \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 |
205 |
adx |
30 |
*/ |
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static void |
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m_nick(struct Client *client_p, struct Client *source_p, |
208 |
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int parc, char *parv[]) |
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{ |
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char nick[NICKLEN]; |
211 |
michael |
885 |
struct Client *target_p = NULL; |
212 |
adx |
30 |
|
213 |
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if (parc < 2 || EmptyString(parv[1])) |
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{ |
215 |
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sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), |
216 |
michael |
981 |
me.name, source_p->name); |
217 |
adx |
30 |
return; |
218 |
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} |
219 |
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220 |
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/* mark end of grace period, to prevent nickflooding */ |
221 |
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if (!IsFloodDone(source_p)) |
222 |
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flood_endgrace(source_p); |
223 |
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224 |
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/* terminate nick to NICKLEN */ |
225 |
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strlcpy(nick, parv[1], sizeof(nick)); |
226 |
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227 |
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/* check the nickname is ok */ |
228 |
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if (!clean_nick_name(nick, 1)) |
229 |
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{ |
230 |
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sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), |
231 |
michael |
981 |
me.name, source_p->name, nick); |
232 |
adx |
30 |
return; |
233 |
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} |
234 |
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235 |
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if (find_matching_name_conf(NRESV_TYPE, nick, |
236 |
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NULL, NULL, 0) && !IsExemptResv(source_p) && |
237 |
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!(IsOper(source_p) && ConfigFileEntry.oper_pass_resv)) |
238 |
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{ |
239 |
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sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), |
240 |
michael |
981 |
me.name, source_p->name, nick); |
241 |
adx |
30 |
return; |
242 |
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} |
243 |
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244 |
michael |
981 |
if ((target_p = find_client(nick)) == NULL) |
245 |
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change_local_nick(client_p, source_p, nick); |
246 |
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else if (target_p == source_p) |
247 |
adx |
30 |
{ |
248 |
michael |
981 |
/* |
249 |
|
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* If (target_p == source_p) the client is changing nicks between |
250 |
adx |
30 |
* equivalent nicknames ie: [nick] -> {nick} |
251 |
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*/ |
252 |
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253 |
michael |
981 |
/* check the nick isnt exactly the same */ |
254 |
|
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if (strcmp(target_p->name, nick)) |
255 |
adx |
30 |
change_local_nick(client_p, source_p, nick); |
256 |
michael |
981 |
} |
257 |
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else if (IsUnknown(target_p)) |
258 |
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{ |
259 |
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/* |
260 |
|
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* if the client that has the nick isn't registered yet (nick but no |
261 |
adx |
30 |
* user) then drop the unregged client |
262 |
|
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*/ |
263 |
michael |
981 |
exit_client(target_p, &me, "Overridden"); |
264 |
|
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change_local_nick(client_p, source_p, nick); |
265 |
adx |
30 |
} |
266 |
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else |
267 |
michael |
981 |
sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, |
268 |
|
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source_p->name, nick); |
269 |
adx |
30 |
} |
270 |
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|
271 |
michael |
981 |
|
272 |
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/*! \brief NICK command handler (called by servers and remotely |
273 |
|
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* connected clients) |
274 |
|
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* |
275 |
|
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* \param client_p Pointer to allocated Client struct with physical connection |
276 |
|
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* to this server, i.e. with an open socket connected. |
277 |
|
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* \param source_p Pointer to allocated Client struct from which the message |
278 |
|
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* originally comes from. This can be a local or remote client. |
279 |
|
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* \param parc Integer holding the number of supplied arguments. |
280 |
|
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* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
281 |
|
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* pointers. |
282 |
|
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* \note Valid arguments for this command are: |
283 |
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* |
284 |
adx |
30 |
* server -> server nick change |
285 |
michael |
981 |
* - parv[0] = sender prefix |
286 |
|
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* - parv[1] = nickname |
287 |
|
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* - parv[2] = TS when nick change |
288 |
adx |
30 |
* |
289 |
|
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* server introducing new nick |
290 |
michael |
981 |
* - parv[0] = sender prefix |
291 |
|
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* - parv[1] = nickname |
292 |
|
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* - parv[2] = hop count |
293 |
|
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* - parv[3] = TS |
294 |
|
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* - parv[4] = umode |
295 |
|
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* - parv[5] = username |
296 |
|
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* - parv[6] = hostname |
297 |
|
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* - parv[7] = server |
298 |
|
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* - parv[8] = ircname |
299 |
adx |
30 |
*/ |
300 |
|
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static void |
301 |
|
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ms_nick(struct Client *client_p, struct Client *source_p, |
302 |
|
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int parc, char *parv[]) |
303 |
|
|
{ |
304 |
michael |
981 |
struct Client *target_p = NULL; |
305 |
adx |
30 |
time_t newts = 0; |
306 |
|
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|
307 |
michael |
981 |
if (parc < 2 || EmptyString(parv[1])) |
308 |
adx |
30 |
return; |
309 |
|
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|
310 |
|
|
if (parc == 9) |
311 |
|
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{ |
312 |
michael |
981 |
struct Client *server_p = find_server(parv[7]); |
313 |
adx |
30 |
|
314 |
|
|
if (server_p == NULL) |
315 |
|
|
{ |
316 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
317 |
|
|
"Invalid server %s from %s for NICK %s", |
318 |
michael |
981 |
parv[7], source_p->name, parv[1]); |
319 |
adx |
30 |
sendto_one(client_p, ":%s KILL %s :%s (Server doesn't exist!)", |
320 |
michael |
981 |
me.name, parv[1], me.name); |
321 |
adx |
30 |
return; |
322 |
|
|
} |
323 |
|
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|
324 |
michael |
981 |
if (check_clean_nick(client_p, source_p, parv[1], server_p) || |
325 |
|
|
check_clean_user(client_p, parv[1], parv[5], server_p) || |
326 |
|
|
check_clean_host(client_p, parv[1], parv[6], server_p)) |
327 |
adx |
30 |
return; |
328 |
|
|
|
329 |
|
|
if (IsServer(source_p)) |
330 |
michael |
981 |
newts = atol(parv[3]); |
331 |
adx |
30 |
} |
332 |
|
|
else if (parc == 3) |
333 |
|
|
{ |
334 |
|
|
if (IsServer(source_p)) |
335 |
michael |
981 |
/* Servers can't change nicks.. */ |
336 |
adx |
30 |
return; |
337 |
|
|
|
338 |
michael |
981 |
if (check_clean_nick(client_p, source_p, parv[1], |
339 |
adx |
30 |
source_p->servptr)) |
340 |
|
|
return; |
341 |
michael |
981 |
|
342 |
|
|
newts = atol(parv[2]); |
343 |
adx |
30 |
} |
344 |
|
|
|
345 |
|
|
/* if the nick doesnt exist, allow it and process like normal */ |
346 |
michael |
981 |
if ((target_p = find_client(parv[1])) == NULL) |
347 |
|
|
nick_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[8]); |
348 |
|
|
else if (IsUnknown(target_p)) |
349 |
adx |
30 |
{ |
350 |
michael |
981 |
/* we're not living in the past anymore, an unknown client is local only. */ |
351 |
adx |
30 |
exit_client(target_p, &me, "Overridden"); |
352 |
michael |
981 |
nick_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[8]); |
353 |
adx |
30 |
} |
354 |
michael |
981 |
else if (target_p == source_p) |
355 |
adx |
30 |
{ |
356 |
michael |
981 |
if (strcmp(target_p->name, parv[1])) |
357 |
|
|
nick_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[8]); |
358 |
adx |
30 |
} |
359 |
michael |
981 |
else |
360 |
|
|
perform_nick_collides(source_p, client_p, target_p, parc, parv, |
361 |
|
|
newts, parv[1], parv[8], NULL); |
362 |
adx |
30 |
} |
363 |
|
|
|
364 |
michael |
981 |
|
365 |
|
|
/*! \brief UID command handler (called by servers) |
366 |
adx |
30 |
* |
367 |
michael |
981 |
* \param client_p Pointer to allocated Client struct with physical connection |
368 |
|
|
* to this server, i.e. with an open socket connected. |
369 |
|
|
* \param source_p Pointer to allocated Client struct from which the message |
370 |
|
|
* originally comes from. This can be a local or remote client. |
371 |
|
|
* \param parc Integer holding the number of supplied arguments. |
372 |
|
|
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
373 |
|
|
* pointers. |
374 |
|
|
* \note Valid arguments for this command are: |
375 |
|
|
* |
376 |
|
|
* - parv[0] = sender prefix |
377 |
|
|
* - parv[1] = nickname |
378 |
|
|
* - parv[2] = hop count |
379 |
|
|
* - parv[3] = TS |
380 |
|
|
* - parv[4] = umode |
381 |
|
|
* - parv[5] = username |
382 |
|
|
* - parv[6] = hostname |
383 |
|
|
* - parv[7] = ip |
384 |
|
|
* - parv[8] = uid |
385 |
|
|
* - parv[9] = ircname (gecos) |
386 |
adx |
30 |
*/ |
387 |
|
|
static void |
388 |
|
|
ms_uid(struct Client *client_p, struct Client *source_p, |
389 |
|
|
int parc, char *parv[]) |
390 |
|
|
{ |
391 |
michael |
981 |
struct Client *target_p = NULL; |
392 |
adx |
30 |
time_t newts = 0; |
393 |
|
|
|
394 |
michael |
981 |
if (parc != 10 || EmptyString(parv[9])) |
395 |
adx |
30 |
return; |
396 |
|
|
|
397 |
michael |
981 |
if (check_clean_nick(client_p, source_p, parv[1], source_p) || |
398 |
|
|
check_clean_user(client_p, parv[1], parv[5], source_p) || |
399 |
|
|
check_clean_host(client_p, parv[1], parv[6], source_p)) |
400 |
adx |
30 |
return; |
401 |
|
|
|
402 |
michael |
981 |
newts = atol(parv[3]); |
403 |
adx |
30 |
|
404 |
michael |
981 |
/* |
405 |
|
|
* if there is an ID collision, kill our client, and kill theirs. |
406 |
adx |
30 |
* this may generate 401's, but it ensures that both clients always |
407 |
|
|
* go, even if the other server refuses to do the right thing. |
408 |
|
|
*/ |
409 |
michael |
981 |
if ((target_p = hash_find_id(parv[8])) != NULL) |
410 |
adx |
30 |
{ |
411 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
412 |
|
|
"ID collision on %s(%s <- %s)(both killed)", |
413 |
|
|
target_p->name, target_p->from->name, |
414 |
|
|
client_p->name); |
415 |
|
|
kill_client_ll_serv_butone(NULL, target_p, "%s (ID collision)", |
416 |
|
|
me.name); |
417 |
|
|
|
418 |
michael |
896 |
++ServerStats.is_kill; |
419 |
adx |
30 |
SetKilled(target_p); |
420 |
|
|
exit_client(target_p, &me, "ID Collision"); |
421 |
|
|
return; |
422 |
|
|
} |
423 |
|
|
|
424 |
michael |
981 |
if ((target_p = find_client(parv[1])) == NULL) |
425 |
|
|
uid_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[9]); |
426 |
adx |
30 |
else if (IsUnknown(target_p)) |
427 |
|
|
{ |
428 |
|
|
exit_client(target_p, &me, "Overridden"); |
429 |
michael |
981 |
uid_from_server(client_p, source_p, parc, parv, newts, parv[1], parv[9]); |
430 |
adx |
30 |
} |
431 |
|
|
else |
432 |
|
|
perform_nick_collides(source_p, client_p, target_p, |
433 |
michael |
981 |
parc, parv, newts, parv[1], parv[9], parv[8]); |
434 |
adx |
30 |
} |
435 |
|
|
|
436 |
|
|
/* check_clean_nick() |
437 |
|
|
* |
438 |
|
|
* input - pointer to source |
439 |
|
|
* - |
440 |
|
|
* - nickname |
441 |
|
|
* - truncated nickname |
442 |
|
|
* - origin of client |
443 |
|
|
* - pointer to server nick is coming from |
444 |
|
|
* output - none |
445 |
|
|
* side effects - if nickname is erroneous, or a different length to |
446 |
|
|
* truncated nickname, return 1 |
447 |
|
|
*/ |
448 |
|
|
static int |
449 |
|
|
check_clean_nick(struct Client *client_p, struct Client *source_p, |
450 |
michael |
981 |
char *nick, struct Client *server_p) |
451 |
adx |
30 |
{ |
452 |
|
|
/* the old code did some wacky stuff here, if the nick is invalid, kill it |
453 |
|
|
* and dont bother messing at all |
454 |
|
|
*/ |
455 |
michael |
981 |
if (!clean_nick_name(nick, 0)) |
456 |
adx |
30 |
{ |
457 |
michael |
896 |
++ServerStats.is_kill; |
458 |
adx |
30 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
459 |
michael |
981 |
"Bad/long Nick: %s From: %s(via %s)", |
460 |
adx |
30 |
nick, server_p->name, client_p->name); |
461 |
|
|
|
462 |
|
|
sendto_one(client_p, ":%s KILL %s :%s (Bad Nickname)", |
463 |
michael |
981 |
me.name, nick, me.name); |
464 |
adx |
30 |
|
465 |
|
|
/* bad nick change */ |
466 |
|
|
if (source_p != client_p) |
467 |
|
|
{ |
468 |
|
|
kill_client_ll_serv_butone(client_p, source_p, |
469 |
|
|
"%s (Bad Nickname)", |
470 |
|
|
me.name); |
471 |
|
|
SetKilled(source_p); |
472 |
|
|
exit_client(source_p, &me, "Bad Nickname"); |
473 |
|
|
} |
474 |
|
|
|
475 |
michael |
981 |
return 1; |
476 |
adx |
30 |
} |
477 |
|
|
|
478 |
michael |
981 |
return 0; |
479 |
adx |
30 |
} |
480 |
|
|
|
481 |
|
|
/* check_clean_user() |
482 |
|
|
* |
483 |
|
|
* input - pointer to client sending data |
484 |
|
|
* - nickname |
485 |
|
|
* - username to check |
486 |
|
|
* - origin of NICK |
487 |
|
|
* output - none |
488 |
|
|
* side effects - if username is erroneous, return 1 |
489 |
|
|
*/ |
490 |
|
|
static int |
491 |
|
|
check_clean_user(struct Client *client_p, char *nick, |
492 |
|
|
char *user, struct Client *server_p) |
493 |
|
|
{ |
494 |
michael |
981 |
if (!clean_user_name(user)) |
495 |
adx |
30 |
{ |
496 |
michael |
896 |
++ServerStats.is_kill; |
497 |
adx |
30 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
498 |
michael |
981 |
"Bad/Long Username: %s Nickname: %s From: %s(via %s)", |
499 |
|
|
user, nick, server_p->name, client_p->name); |
500 |
adx |
30 |
sendto_one(client_p, ":%s KILL %s :%s (Bad Username)", |
501 |
|
|
me.name, nick, me.name); |
502 |
michael |
981 |
return 1; |
503 |
adx |
30 |
} |
504 |
|
|
|
505 |
michael |
981 |
return 0; |
506 |
adx |
30 |
} |
507 |
|
|
|
508 |
|
|
/* check_clean_host() |
509 |
|
|
* |
510 |
|
|
* input - pointer to client sending us data |
511 |
|
|
* - nickname |
512 |
|
|
* - hostname to check |
513 |
|
|
* - source name |
514 |
|
|
* output - none |
515 |
|
|
* side effects - if hostname is erroneous, return 1 |
516 |
|
|
*/ |
517 |
|
|
static int |
518 |
|
|
check_clean_host(struct Client *client_p, char *nick, |
519 |
|
|
char *host, struct Client *server_p) |
520 |
|
|
{ |
521 |
michael |
981 |
if (!clean_host_name(host)) |
522 |
adx |
30 |
{ |
523 |
michael |
896 |
++ServerStats.is_kill; |
524 |
adx |
30 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
525 |
michael |
981 |
"Bad/Long Hostname: %s Nickname: %s From: %s(via %s)", |
526 |
|
|
host, nick, server_p->name, client_p->name); |
527 |
adx |
30 |
sendto_one(client_p, ":%s KILL %s :%s (Bad Hostname)", |
528 |
|
|
me.name, nick, me.name); |
529 |
michael |
981 |
return 1; |
530 |
adx |
30 |
} |
531 |
|
|
|
532 |
michael |
981 |
return 0; |
533 |
adx |
30 |
} |
534 |
|
|
|
535 |
|
|
/* clean_nick_name() |
536 |
|
|
* |
537 |
|
|
* input - nickname |
538 |
|
|
* - whether it's a local nick (1) or remote (0) |
539 |
|
|
* output - none |
540 |
|
|
* side effects - walks through the nickname, returning 0 if erroneous |
541 |
|
|
*/ |
542 |
|
|
static int |
543 |
michael |
981 |
clean_nick_name(const char *nick, const int local) |
544 |
adx |
30 |
{ |
545 |
michael |
981 |
const char *p = nick; |
546 |
michael |
1017 |
assert(nick && *nick); |
547 |
adx |
30 |
|
548 |
michael |
981 |
/* nicks can't start with a digit or - or be 0 length */ |
549 |
adx |
30 |
/* This closer duplicates behaviour of hybrid-6 */ |
550 |
michael |
981 |
if (*p == '-' || (IsDigit(*p) && local) || *p == '\0') |
551 |
|
|
return 0; |
552 |
adx |
30 |
|
553 |
michael |
981 |
for (; *p; ++p) |
554 |
|
|
if (!IsNickChar(*p)) |
555 |
|
|
return 0; |
556 |
adx |
30 |
|
557 |
michael |
981 |
return p - nick <= (NICKLEN - 1); |
558 |
adx |
30 |
} |
559 |
|
|
|
560 |
|
|
/* clean_user_name() |
561 |
|
|
* |
562 |
|
|
* input - username |
563 |
|
|
* output - none |
564 |
|
|
* side effects - walks through the username, returning 0 if erroneous |
565 |
|
|
*/ |
566 |
|
|
static int |
567 |
michael |
981 |
clean_user_name(const char *user) |
568 |
adx |
30 |
{ |
569 |
michael |
981 |
const char *p = user; |
570 |
|
|
|
571 |
|
|
assert(user && *user); |
572 |
|
|
|
573 |
|
|
for (; *p; ++p) |
574 |
|
|
if (!IsUserChar(*p)) |
575 |
adx |
30 |
return 0; |
576 |
|
|
|
577 |
michael |
981 |
return p - user <= USERLEN; |
578 |
adx |
30 |
} |
579 |
|
|
|
580 |
|
|
/* clean_host_name() |
581 |
|
|
* input - hostname |
582 |
|
|
* output - none |
583 |
|
|
* side effects - walks through the hostname, returning 0 if erroneous |
584 |
|
|
*/ |
585 |
|
|
static int |
586 |
michael |
981 |
clean_host_name(const char *host) |
587 |
adx |
30 |
{ |
588 |
michael |
981 |
const char *p = host; |
589 |
|
|
|
590 |
|
|
assert(host && *host); |
591 |
|
|
|
592 |
|
|
for (; *p; ++p) |
593 |
|
|
if (!IsHostChar(*p)) |
594 |
adx |
30 |
return 0; |
595 |
|
|
|
596 |
michael |
981 |
return p - host <= HOSTLEN; |
597 |
adx |
30 |
} |
598 |
|
|
|
599 |
|
|
/* |
600 |
|
|
* nick_from_server() |
601 |
|
|
*/ |
602 |
|
|
static void |
603 |
|
|
nick_from_server(struct Client *client_p, struct Client *source_p, int parc, |
604 |
|
|
char *parv[], time_t newts, char *nick, char *ngecos) |
605 |
|
|
{ |
606 |
michael |
876 |
int samenick = 0; |
607 |
|
|
|
608 |
adx |
30 |
if (IsServer(source_p)) |
609 |
|
|
{ |
610 |
|
|
/* A server introducing a new client, change source */ |
611 |
|
|
source_p = make_client(client_p); |
612 |
|
|
dlinkAdd(source_p, &source_p->node, &global_client_list); |
613 |
|
|
|
614 |
|
|
if (parc > 2) |
615 |
|
|
source_p->hopcount = atoi(parv[2]); |
616 |
|
|
if (newts) |
617 |
|
|
source_p->tsinfo = newts; |
618 |
|
|
else |
619 |
|
|
{ |
620 |
|
|
newts = source_p->tsinfo = CurrentTime; |
621 |
|
|
ts_warn("Remote nick %s (%s) introduced without a TS", nick, parv[0]); |
622 |
|
|
} |
623 |
|
|
|
624 |
michael |
981 |
strlcpy(source_p->info, parv[8], sizeof(source_p->info)); |
625 |
adx |
30 |
/* copy the nick in place */ |
626 |
|
|
strcpy(source_p->name, nick); |
627 |
|
|
hash_add_client(source_p); |
628 |
|
|
|
629 |
|
|
if (parc > 8) |
630 |
|
|
{ |
631 |
michael |
981 |
const char *m; |
632 |
adx |
30 |
|
633 |
|
|
/* parse usermodes */ |
634 |
michael |
896 |
for (m = &parv[4][1]; *m; ++m) |
635 |
adx |
30 |
{ |
636 |
michael |
896 |
unsigned int flag = user_modes[(unsigned char)*m]; |
637 |
adx |
30 |
|
638 |
michael |
896 |
if (flag & UMODE_INVISIBLE) |
639 |
|
|
++Count.invisi; |
640 |
|
|
if (flag & UMODE_OPER) |
641 |
|
|
++Count.oper; |
642 |
|
|
|
643 |
adx |
30 |
source_p->umodes |= flag & SEND_UMODES; |
644 |
|
|
} |
645 |
|
|
|
646 |
michael |
1080 |
register_remote_user(source_p, parv[5], parv[6], |
647 |
adx |
30 |
parv[7], ngecos); |
648 |
michael |
222 |
return; |
649 |
adx |
30 |
} |
650 |
|
|
} |
651 |
|
|
else if (source_p->name[0]) |
652 |
|
|
{ |
653 |
michael |
981 |
samenick = !irccmp(source_p->name, nick); |
654 |
michael |
876 |
|
655 |
adx |
30 |
/* client changing their nick */ |
656 |
michael |
876 |
if (!samenick) |
657 |
michael |
706 |
{ |
658 |
michael |
876 |
watch_check_hash(source_p, RPL_LOGOFF); |
659 |
adx |
30 |
source_p->tsinfo = newts ? newts : CurrentTime; |
660 |
michael |
706 |
} |
661 |
adx |
30 |
|
662 |
|
|
sendto_common_channels_local(source_p, 1, ":%s!%s@%s NICK :%s", |
663 |
|
|
source_p->name,source_p->username, |
664 |
|
|
source_p->host, nick); |
665 |
|
|
|
666 |
michael |
706 |
add_history(source_p, 1); |
667 |
michael |
885 |
sendto_server(client_p, NULL, CAP_TS6, NOCAPS, |
668 |
adx |
30 |
":%s NICK %s :%lu", |
669 |
|
|
ID(source_p), nick, (unsigned long)source_p->tsinfo); |
670 |
michael |
885 |
sendto_server(client_p, NULL, NOCAPS, CAP_TS6, |
671 |
adx |
30 |
":%s NICK %s :%lu", |
672 |
michael |
981 |
source_p->name, nick, (unsigned long)source_p->tsinfo); |
673 |
adx |
30 |
} |
674 |
|
|
|
675 |
|
|
/* set the new nick name */ |
676 |
|
|
if (source_p->name[0]) |
677 |
|
|
hash_del_client(source_p); |
678 |
|
|
|
679 |
|
|
strcpy(source_p->name, nick); |
680 |
|
|
hash_add_client(source_p); |
681 |
michael |
876 |
|
682 |
|
|
if (!samenick) |
683 |
|
|
watch_check_hash(source_p, RPL_LOGON); |
684 |
adx |
30 |
} |
685 |
|
|
|
686 |
|
|
/* |
687 |
|
|
* client_from_server() |
688 |
|
|
*/ |
689 |
|
|
static void |
690 |
michael |
981 |
uid_from_server(struct Client *client_p, struct Client *source_p, int parc, |
691 |
adx |
30 |
char *parv[], time_t newts, char *nick, char *ugecos) |
692 |
|
|
{ |
693 |
michael |
981 |
const char *m = NULL; |
694 |
adx |
30 |
const char *servername = source_p->name; |
695 |
|
|
|
696 |
|
|
source_p = make_client(client_p); |
697 |
|
|
dlinkAdd(source_p, &source_p->node, &global_client_list); |
698 |
|
|
|
699 |
|
|
source_p->hopcount = atoi(parv[2]); |
700 |
|
|
source_p->tsinfo = newts; |
701 |
|
|
|
702 |
|
|
/* copy the nick in place */ |
703 |
|
|
strcpy(source_p->name, nick); |
704 |
|
|
strlcpy(source_p->id, parv[8], sizeof(source_p->id)); |
705 |
|
|
strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); |
706 |
michael |
981 |
strlcpy(source_p->info, parv[9], sizeof(source_p->info)); |
707 |
adx |
30 |
|
708 |
|
|
hash_add_client(source_p); |
709 |
|
|
hash_add_id(source_p); |
710 |
|
|
|
711 |
|
|
/* parse usermodes */ |
712 |
michael |
896 |
for (m = &parv[4][1]; *m; ++m) |
713 |
adx |
30 |
{ |
714 |
michael |
896 |
unsigned int flag = user_modes[(unsigned char)*m]; |
715 |
|
|
|
716 |
adx |
30 |
if (flag & UMODE_INVISIBLE) |
717 |
michael |
896 |
++Count.invisi; |
718 |
adx |
30 |
if (flag & UMODE_OPER) |
719 |
michael |
896 |
++Count.oper; |
720 |
adx |
30 |
|
721 |
|
|
source_p->umodes |= flag & SEND_UMODES; |
722 |
|
|
} |
723 |
|
|
|
724 |
michael |
1080 |
register_remote_user(source_p, parv[5], parv[6], |
725 |
michael |
981 |
servername, parv[9]); |
726 |
adx |
30 |
} |
727 |
|
|
|
728 |
|
|
static void |
729 |
|
|
perform_nick_collides(struct Client *source_p, struct Client *client_p, |
730 |
|
|
struct Client *target_p, int parc, char *parv[], |
731 |
|
|
time_t newts, char *nick, char *gecos, char *uid) |
732 |
|
|
{ |
733 |
|
|
int sameuser; |
734 |
|
|
|
735 |
|
|
/* server introducing new nick */ |
736 |
|
|
if (IsServer(source_p)) |
737 |
|
|
{ |
738 |
|
|
/* if we dont have a ts, or their TS's are the same, kill both */ |
739 |
|
|
if (!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) |
740 |
|
|
{ |
741 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
742 |
|
|
"Nick collision on %s(%s <- %s)(both killed)", |
743 |
|
|
target_p->name, target_p->from->name, |
744 |
|
|
client_p->name); |
745 |
|
|
|
746 |
|
|
/* if we have a UID, issue a kill for it */ |
747 |
|
|
if (uid) |
748 |
|
|
sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", |
749 |
|
|
me.id, uid, me.name); |
750 |
|
|
|
751 |
|
|
kill_client_ll_serv_butone(NULL, target_p, |
752 |
|
|
"%s (Nick collision (new))", |
753 |
|
|
me.name); |
754 |
michael |
896 |
++ServerStats.is_kill; |
755 |
adx |
30 |
sendto_one(target_p, form_str(ERR_NICKCOLLISION), |
756 |
|
|
me.name, target_p->name, target_p->name); |
757 |
|
|
|
758 |
|
|
SetKilled(target_p); |
759 |
|
|
exit_client(target_p, &me, "Nick collision (new)"); |
760 |
|
|
return; |
761 |
|
|
} |
762 |
|
|
/* the timestamps are different */ |
763 |
|
|
else |
764 |
|
|
{ |
765 |
|
|
sameuser = !irccmp(target_p->username, parv[5]) && |
766 |
|
|
!irccmp(target_p->host, parv[6]); |
767 |
|
|
|
768 |
|
|
/* if the users are the same (loaded a client on a different server) |
769 |
|
|
* and the new users ts is older, or the users are different and the |
770 |
|
|
* new users ts is newer, ignore the new client and let it do the kill |
771 |
|
|
*/ |
772 |
|
|
if ((sameuser && newts < target_p->tsinfo) || |
773 |
|
|
(!sameuser && newts > target_p->tsinfo)) |
774 |
|
|
{ |
775 |
|
|
if (uid) |
776 |
|
|
sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", |
777 |
|
|
me.id, uid, me.name); |
778 |
|
|
return; |
779 |
|
|
} |
780 |
|
|
else |
781 |
|
|
{ |
782 |
|
|
if (sameuser) |
783 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
784 |
|
|
"Nick collision on %s(%s <- %s)(older killed)", |
785 |
|
|
target_p->name, target_p->from->name, |
786 |
|
|
client_p->name); |
787 |
|
|
else |
788 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
789 |
|
|
"Nick collision on %s(%s <- %s)(newer killed)", |
790 |
|
|
target_p->name, target_p->from->name, |
791 |
|
|
client_p->name); |
792 |
|
|
|
793 |
michael |
896 |
++ServerStats.is_kill; |
794 |
adx |
30 |
sendto_one(target_p, form_str(ERR_NICKCOLLISION), |
795 |
|
|
me.name, target_p->name, target_p->name); |
796 |
|
|
|
797 |
|
|
/* if it came from a LL server, itd have been source_p, |
798 |
|
|
* so we dont need to mark target_p as known |
799 |
|
|
*/ |
800 |
|
|
kill_client_ll_serv_butone(source_p, target_p, |
801 |
|
|
"%s (Nick collision (new))", |
802 |
|
|
me.name); |
803 |
|
|
|
804 |
|
|
SetKilled(target_p); |
805 |
|
|
exit_client(target_p, &me, "Nick collision"); |
806 |
|
|
|
807 |
|
|
if (parc == 9) |
808 |
|
|
nick_from_server(client_p, source_p, parc, parv, newts, nick, gecos); |
809 |
|
|
else if (parc == 10) |
810 |
michael |
981 |
uid_from_server(client_p, source_p, parc, parv, newts, nick, gecos); |
811 |
adx |
30 |
|
812 |
|
|
return; |
813 |
|
|
} |
814 |
|
|
} |
815 |
|
|
} |
816 |
|
|
|
817 |
|
|
/* its a client changing nick and causing a collide */ |
818 |
|
|
if (!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) |
819 |
michael |
981 |
{ |
820 |
adx |
30 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
821 |
|
|
"Nick change collision from %s to %s(%s <- %s)(both killed)", |
822 |
|
|
source_p->name, target_p->name, target_p->from->name, |
823 |
|
|
client_p->name); |
824 |
|
|
|
825 |
michael |
981 |
sendto_one(target_p, form_str(ERR_NICKCOLLISION), me.name, |
826 |
|
|
target_p->name, target_p->name); |
827 |
|
|
|
828 |
michael |
896 |
++ServerStats.is_kill; |
829 |
michael |
981 |
kill_client_ll_serv_butone(NULL, source_p, "%s (Nick change collision)", |
830 |
|
|
me.name); |
831 |
adx |
30 |
|
832 |
michael |
896 |
++ServerStats.is_kill; |
833 |
michael |
981 |
kill_client_ll_serv_butone(NULL, target_p, "%s (Nick change collision)", |
834 |
|
|
me.name); |
835 |
adx |
30 |
|
836 |
|
|
SetKilled(target_p); |
837 |
|
|
exit_client(target_p, &me, "Nick collision (new)"); |
838 |
michael |
981 |
|
839 |
adx |
30 |
SetKilled(source_p); |
840 |
|
|
exit_client(source_p, &me, "Nick collision (old)"); |
841 |
|
|
return; |
842 |
|
|
} |
843 |
|
|
else |
844 |
|
|
{ |
845 |
|
|
sameuser = !irccmp(target_p->username, source_p->username) && |
846 |
|
|
!irccmp(target_p->host, source_p->host); |
847 |
|
|
|
848 |
|
|
if ((sameuser && newts < target_p->tsinfo) || |
849 |
|
|
(!sameuser && newts > target_p->tsinfo)) |
850 |
|
|
{ |
851 |
|
|
if (sameuser) |
852 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
853 |
|
|
"Nick change collision from %s to %s(%s <- %s)(older killed)", |
854 |
|
|
source_p->name, target_p->name, target_p->from->name, |
855 |
|
|
client_p->name); |
856 |
|
|
else |
857 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
858 |
|
|
"Nick change collision from %s to %s(%s <- %s)(newer killed)", |
859 |
|
|
source_p->name, target_p->name, target_p->from->name, |
860 |
|
|
client_p->name); |
861 |
|
|
|
862 |
michael |
896 |
++ServerStats.is_kill; |
863 |
adx |
30 |
kill_client_ll_serv_butone(client_p, source_p, |
864 |
|
|
"%s (Nick change collision)", |
865 |
|
|
me.name); |
866 |
|
|
|
867 |
|
|
SetKilled(source_p); |
868 |
|
|
|
869 |
|
|
if (sameuser) |
870 |
|
|
exit_client(source_p, &me, "Nick collision (old)"); |
871 |
|
|
else |
872 |
|
|
exit_client(source_p, &me, "Nick collision (new)"); |
873 |
|
|
return; |
874 |
|
|
} |
875 |
|
|
else |
876 |
|
|
{ |
877 |
|
|
if (sameuser) |
878 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
879 |
|
|
"Nick collision on %s(%s <- %s)(older killed)", |
880 |
|
|
target_p->name, target_p->from->name, |
881 |
|
|
client_p->name); |
882 |
|
|
else |
883 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
884 |
|
|
"Nick collision on %s(%s <- %s)(newer killed)", |
885 |
|
|
target_p->name, target_p->from->name, |
886 |
|
|
client_p->name); |
887 |
|
|
|
888 |
|
|
kill_client_ll_serv_butone(source_p, target_p, |
889 |
|
|
"%s (Nick collision)", |
890 |
|
|
me.name); |
891 |
|
|
|
892 |
michael |
896 |
++ServerStats.is_kill; |
893 |
adx |
30 |
sendto_one(target_p, form_str(ERR_NICKCOLLISION), |
894 |
|
|
me.name, target_p->name, target_p->name); |
895 |
|
|
|
896 |
|
|
SetKilled(target_p); |
897 |
|
|
exit_client(target_p, &me, "Nick collision"); |
898 |
|
|
} |
899 |
|
|
} |
900 |
|
|
|
901 |
|
|
/* we should only ever call nick_from_server() here, as |
902 |
|
|
* this is a client changing nick, not a new client |
903 |
|
|
*/ |
904 |
|
|
nick_from_server(client_p, source_p, parc, parv, newts, nick, gecos); |
905 |
|
|
} |