unrealircd

- supernets unrealircd source & configuration
git clone git://git.acid.vegas/unrealircd.git
svsnick.c (3580B)
      1 /*
      2  *   IRC - Internet Relay Chat, src/modules/svsnick.c
      3  *   (C) 2001 The UnrealIRCd Team
      4  *
      5  *   svsnick command
      6  *
      7  *   See file AUTHORS in IRC package for additional names of
      8  *   the programmers.
      9  *
     10  *   This program is free software; you can redistribute it and/or modify
     11  *   it under the terms of the GNU General Public License as published by
     12  *   the Free Software Foundation; either version 1, or (at your option)
     13  *   any later version.
     14  *
     15  *   This program is distributed in the hope that it will be useful,
     16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
     17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     18  *   GNU General Public License for more details.
     19  *
     20  *   You should have received a copy of the GNU General Public License
     21  *   along with this program; if not, write to the Free Software
     22  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
     23  */
     24 
     25 #include "unrealircd.h"
     26 
     27 CMD_FUNC(cmd_svsnick);
     28 
     29 #define MSG_SVSNICK 	"SVSNICK"	
     30 
     31 ModuleHeader MOD_HEADER
     32   = {
     33 	"svsnick",
     34 	"5.0",
     35 	"command /svsnick", 
     36 	"UnrealIRCd Team",
     37 	"unrealircd-6",
     38     };
     39 
     40 MOD_INIT()
     41 {
     42 	CommandAdd(modinfo->handle, MSG_SVSNICK, cmd_svsnick, MAXPARA, CMD_SERVER);
     43 	MARK_AS_OFFICIAL_MODULE(modinfo);
     44 	return MOD_SUCCESS;
     45 }
     46 
     47 MOD_LOAD()
     48 {
     49 	return MOD_SUCCESS;
     50 }
     51 
     52 MOD_UNLOAD()
     53 {
     54 	return MOD_SUCCESS;
     55 }
     56 /*
     57 ** cmd_svsnick
     58 **      parv[1] = old nickname
     59 **      parv[2] = new nickname
     60 **      parv[3] = timestamp
     61 */
     62 CMD_FUNC(cmd_svsnick)
     63 {
     64 	Client *acptr;
     65 	Client *ocptr; /* Other client */
     66 	MessageTag *mtags = NULL;
     67 	char nickname[NICKLEN+1];
     68 	char oldnickname[NICKLEN+1];
     69 	time_t ts;
     70 
     71 	if (!IsSvsCmdOk(client) || parc < 4 || (strlen(parv[2]) > NICKLEN))
     72 		return; /* This looks like an error anyway -Studded */
     73 
     74 	if (hunt_server(client, NULL, "SVSNICK", 1, parc, parv) != HUNTED_ISME)
     75 		return; /* Forwarded, done */
     76 
     77 	strlcpy(nickname, parv[2], sizeof(nickname));
     78 	if (do_nick_name(nickname) == 0)
     79 		return;
     80 
     81 	if (!(acptr = find_user(parv[1], NULL)))
     82 		return; /* User not found, bail out */
     83 
     84 	if ((ocptr = find_client(nickname, NULL)) && ocptr != acptr) /* Collision */
     85 	{
     86 		exit_client(acptr, NULL,
     87 		                   "Nickname collision due to forced "
     88 		                   "nickname change, your nick was overruled");
     89 		return;
     90 	}
     91 
     92 	/* if the new nickname is identical to the old one, ignore it */
     93 	if (!strcmp(acptr->name, nickname))
     94 		return;
     95 
     96 	strlcpy(oldnickname, acptr->name, sizeof(oldnickname));
     97 
     98 	if (acptr != ocptr)
     99 		acptr->umodes &= ~UMODE_REGNICK;
    100 	ts = atol(parv[3]);
    101 
    102 	/* no 'recv_mtags' here, we do not inherit from SVSNICK but generate a new NICK event */
    103 	new_message(acptr, NULL, &mtags);
    104 	mtag_add_issued_by(&mtags, client, recv_mtags);
    105 	RunHook(HOOKTYPE_LOCAL_NICKCHANGE, acptr, mtags, nickname);
    106 	sendto_local_common_channels(acptr, acptr, 0, mtags, ":%s NICK :%s", acptr->name, nickname);
    107 	sendto_one(acptr, mtags, ":%s NICK :%s", acptr->name, nickname);
    108 	sendto_server(NULL, 0, 0, mtags, ":%s NICK %s :%lld", acptr->id, nickname, (long long)ts);
    109 
    110 	add_history(acptr, 1, WHOWAS_EVENT_NICK_CHANGE);
    111 	acptr->lastnick = ts; /* needs to be done AFTER add_history() */
    112 	del_from_client_hash_table(acptr->name, acptr);
    113 
    114 	unreal_log(ULOG_INFO, "nick", "FORCED_NICK_CHANGE", acptr,
    115 	           "$client.details has been forced to change their nickname to $new_nick_name",
    116 	           log_data_string("new_nick_name", nickname));
    117 
    118 	strlcpy(acptr->name, nickname, sizeof acptr->name);
    119 	add_to_client_hash_table(nickname, acptr);
    120 	RunHook(HOOKTYPE_POST_LOCAL_NICKCHANGE, acptr, mtags, oldnickname);
    121 	free_message_tags(mtags);
    122 }