[solanum.git] / modules / core / m_kill.c

/*
 *  ircd-ratbox: A slightly useful ircd.
 *  m_kill.c: Kills a user.
 *
 *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
 *  Copyright (C) 1996-2002 Hybrid Development Team
 *  Copyright (C) 2002-2005 ircd-ratbox development team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 */

#include "stdinc.h"
#include "client.h"
#include "hash.h"		/* for find_client() */
#include "ircd.h"
#include "numeric.h"
#include "logger.h"
#include "s_serv.h"
#include "s_conf.h"
#include "send.h"
#include "whowas.h"
#include "match.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_newconf.h"

static const char kill_desc[] = "Provides the KILL command to remove a user from the network";

static int h_can_kill;
static char buf[BUFSIZE];

static void ms_kill(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void mo_kill(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void relay_kill(struct Client *, struct Client *, struct Client *,
		       const char *, const char *);

struct Message kill_msgtab = {
	"KILL", 0, 0, 0, 0,
	{mg_unreg, mg_not_oper, {ms_kill, 2}, {ms_kill, 2}, mg_ignore, {mo_kill, 2}}
};

mapi_clist_av1 kill_clist[] = { &kill_msgtab, NULL };

mapi_hlist_av1 kill_hlist[] = {
	{ "can_kill", &h_can_kill },
	{ NULL, NULL},
};

DECLARE_MODULE_AV2(kill, NULL, NULL, kill_clist, kill_hlist, NULL, NULL, NULL, kill_desc);

/*
** mo_kill
**      parv[1] = kill victim
**      parv[2] = kill path
*/
static void
mo_kill(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	struct Client *target_p;
	const char *inpath = client_p->name;
	const char *user;
	const char *reason;
	hook_data_client_approval moduledata;

	user = parv[1];

	if(!IsOperKill(source_p))
	{
		sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "kill");
		return;
	}

	if(!EmptyString(parv[2]))
	{
		char *s;
		s = LOCAL_COPY(parv[2]);
		if(strlen(s) > (size_t) KILLLEN)
			s[KILLLEN] = '\0';
		reason = s;
	}
	else
		reason = "<No reason given>";

	if((target_p = find_named_person(user)) == NULL)
	{
		/*
		 ** If the user has recently changed nick, automatically
		 ** rewrite the KILL for this new nickname--this keeps
		 ** servers in synch when nick change and kill collide
		 */
		if((target_p = whowas_get_history(user, (long) KILLCHASETIMELIMIT)) == NULL)
		{
			if (strchr(user, '.'))
				sendto_one_numeric(source_p, ERR_CANTKILLSERVER, form_str(ERR_CANTKILLSERVER));
			else
				sendto_one_numeric(source_p, ERR_NOSUCHNICK,
						   form_str(ERR_NOSUCHNICK), user);
			return;
		}
		sendto_one_notice(source_p, ":KILL changed from %s to %s", user, target_p->name);
	}

	/* Last chance to stop the kill */
	moduledata.client = source_p;
	moduledata.target = target_p;
	moduledata.approved = 1;
	call_hook(h_can_kill, &moduledata);

	if (moduledata.approved == 0)
		/* The callee should have sent a message. */
		return;

	if(MyConnect(target_p))
		sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
			   source_p->name, source_p->username, source_p->host,
			   target_p->name, reason);

	/* Do not change the format of this message.  There's no point in changing messages
	 * that have been around for ever, for no reason.. */
	sendto_realops_snomask(SNO_GENERAL, L_ALL,
			     "Received KILL message for %s!%s@%s. From %s Path: %s (%s)",
			     target_p->name, target_p->username, target_p->orighost,
			     source_p->name, me.name, reason);

	ilog(L_KILL, "%c %s %s!%s@%s %s %s",
	     MyConnect(target_p) ? 'L' : 'G', get_oper_name(source_p),
	     target_p->name, target_p->username, target_p->host, target_p->servptr->name, reason);

	/*
	 ** And pass on the message to other servers. Note, that if KILL
	 ** was changed, the message has to be sent to all links, also
	 ** back.
	 ** Suicide kills are NOT passed on --SRB
	 */
	if(!MyConnect(target_p))
	{
		relay_kill(client_p, source_p, target_p, inpath, reason);
		/*
		 ** Set FLAGS_KILLED. This prevents exit_one_client from sending
		 ** the unnecessary QUIT for this. (This flag should never be
		 ** set in any other place)
		 */
		target_p->flags |= FLAGS_KILLED;
	}

	sprintf(buf, "Killed (%s (%s))", source_p->name, reason);

	exit_client(client_p, target_p, source_p, buf);
}

/*
 * ms_kill
 *      parv[1] = kill victim
 *      parv[2] = kill path and reason
 */
static void
ms_kill(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	struct Client *target_p;
	const char *user;
	const char *reason;
	char default_reason[] = "<No reason given>";
	const char *path;

	*buf = '\0';

	user = parv[1];

	if(EmptyString(parv[2]))
	{
		reason = default_reason;

		/* hyb6 takes the nick of the killer from the path *sigh* --fl_ */
		path = source_p->name;
	}
	else
	{
		char *s = LOCAL_COPY(parv[2]), *t;
		t = strchr(s, ' ');

		if(t)
		{
			*t = '\0';
			t++;
			reason = t;
		}
		else
			reason = default_reason;

		path = s;
	}

	if((target_p = find_person(user)) == NULL)
	{
		/*
		 * If the user has recently changed nick, but only if its
		 * not an uid, automatically rewrite the KILL for this new nickname.
		 * --this keeps servers in synch when nick change and kill collide
		 */
		if(IsDigit(*user) || (!(target_p = whowas_get_history(user, (long) KILLCHASETIMELIMIT))))
		{
			sendto_one_numeric(source_p, ERR_NOSUCHNICK,
					   form_str(ERR_NOSUCHNICK), IsDigit(*user) ? "*" : user);
			return;
		}
		sendto_one_notice(source_p, ":KILL changed from %s to %s", user, target_p->name);
	}

	if(IsServer(target_p) || IsMe(target_p))
	{
		sendto_one_numeric(source_p, ERR_CANTKILLSERVER, form_str(ERR_CANTKILLSERVER));
		return;
	}

	if(MyConnect(target_p))
	{
		if(IsServer(source_p))
		{
			sendto_one(target_p, ":%s KILL %s :%s",
				   source_p->name, target_p->name, reason);
		}
		else
			sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
				   source_p->name, source_p->username, source_p->host,
				   target_p->name, reason);
	}

	/* Be warned, this message must be From %s, or it confuses clients
	 * so dont change it to From: or the case or anything! -- fl -- db */
	/* path must contain at least 2 !'s, or bitchx falsely declares it
	 * local --fl
	 */
	if(IsOper(source_p))	/* send it normally */
	{
		sendto_realops_snomask(IsService(source_p) ? SNO_SKILL : SNO_GENERAL, L_ALL,
				     "Received KILL message for %s!%s@%s. From %s Path: %s!%s!%s!%s %s",
				     target_p->name, target_p->username, target_p->orighost, source_p->name,
				     source_p->servptr->name, source_p->host, source_p->username,
				     source_p->name, reason);

		ilog(L_KILL, "%c %s %s!%s@%s %s %s",
		     MyConnect(target_p) ? 'O' : 'R', get_oper_name(source_p),
		     target_p->name, target_p->username, target_p->host,
		     target_p->servptr->name, reason);
	}
	else
	{
		sendto_realops_snomask(SNO_SKILL, L_ALL,
				     "Received KILL message for %s!%s@%s. From %s %s",
				     target_p->name, target_p->username, target_p->orighost,
				     source_p->name, reason);

		ilog(L_KILL, "S %s %s!%s@%s %s %s",
		     source_p->name, target_p->name, target_p->username,
		     target_p->host, target_p->servptr->name, reason);
	}

	relay_kill(client_p, source_p, target_p, path, reason);

	/* FLAGS_KILLED prevents a quit being sent out */
	target_p->flags |= FLAGS_KILLED;

	sprintf(buf, "Killed (%s %s)", source_p->name, reason);

	exit_client(client_p, target_p, source_p, buf);
}

static void
relay_kill(struct Client *one, struct Client *source_p,
	   struct Client *target_p, const char *inpath, const char *reason)
{
	struct Client *client_p;
	rb_dlink_node *ptr;
	char buffer[BUFSIZE];

	if(MyClient(source_p))
		snprintf(buffer, sizeof(buffer),
			    "%s!%s!%s!%s (%s)",
			    me.name, source_p->host, source_p->username, source_p->name, reason);
	else
		snprintf(buffer, sizeof(buffer), "%s %s", inpath, reason);

	RB_DLINK_FOREACH(ptr, serv_list.head)
	{
		client_p = ptr->data;

		if(!client_p || client_p == one)
			continue;

		sendto_one(client_p, ":%s KILL %s :%s",
			   get_id(source_p, client_p), get_id(target_p, client_p), buffer);
	}
}
Commit	Line	Data
212380e3 AC	1	/*
	2	* ircd-ratbox: A slightly useful ircd.
	3	* m_kill.c: Kills a user.
	4	*
	5	* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
	6	* Copyright (C) 1996-2002 Hybrid Development Team
	7	* Copyright (C) 2002-2005 ircd-ratbox development team
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	22	* USA
212380e3 AC	23	*/
	24
	25	#include "stdinc.h"
	26	#include "client.h"
	27	#include "hash.h" /* for find_client() */
	28	#include "ircd.h"
	29	#include "numeric.h"
4016731b	30	#include "logger.h"
212380e3 AC	31	#include "s_serv.h"
	32	#include "s_conf.h"
	33	#include "send.h"
	34	#include "whowas.h"
4562c604	35	#include "match.h"
212380e3 AC	36	#include "msg.h"
	37	#include "parse.h"
	38	#include "modules.h"
	39	#include "s_newconf.h"
	40
eeabf33a EM	41	static const char kill_desc[] = "Provides the KILL command to remove a user from the network";
eeabf33a EM	42
9d745dbd	43	static int h_can_kill;
212380e3 AC	44	static char buf[BUFSIZE];
212380e3 AC	45
3c7d6fcc EM	46	static void ms_kill(struct MsgBuf , struct Client , struct Client , int, const char *);
3c7d6fcc EM	47	static void mo_kill(struct MsgBuf , struct Client , struct Client , int, const char *);
212380e3 AC	48	static void relay_kill(struct Client , struct Client , struct Client *,
	49	const char , const char );
	50
	51	struct Message kill_msgtab = {
7baa37a9	52	"KILL", 0, 0, 0, 0,
212380e3 AC	53	{mg_unreg, mg_not_oper, {ms_kill, 2}, {ms_kill, 2}, mg_ignore, {mo_kill, 2}}
	54	};
	55
	56	mapi_clist_av1 kill_clist[] = { &kill_msgtab, NULL };
	57
9d745dbd EM	58	mapi_hlist_av1 kill_hlist[] = {
	59	{ "can_kill", &h_can_kill },
	60	{ NULL, NULL},
	61	};
	62
ac1b809c	63	DECLARE_MODULE_AV2(kill, NULL, NULL, kill_clist, kill_hlist, NULL, NULL, NULL, kill_desc);
212380e3 AC	64
	65	/*
	66	** mo_kill
212380e3 AC	67	** parv[1] = kill victim
	68	** parv[2] = kill path
	69	*/
3c7d6fcc	70	static void
428ca87b	71	mo_kill(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	72	{
	73	struct Client *target_p;
	74	const char *inpath = client_p->name;
	75	const char *user;
	76	const char *reason;
9d745dbd	77	hook_data_client_approval moduledata;
212380e3 AC	78
	79	user = parv[1];
	80
7d84719d	81	if(!IsOperKill(source_p))
212380e3	82	{
7d84719d	83	sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "kill");
3c7d6fcc	84	return;
212380e3 AC	85	}
	86
	87	if(!EmptyString(parv[2]))
	88	{
	89	char *s;
	90	s = LOCAL_COPY(parv[2]);
	91	if(strlen(s) > (size_t) KILLLEN)
	92	s[KILLLEN] = '\0';
	93	reason = s;
	94	}
	95	else
	96	reason = "<No reason given>";
	97
	98	if((target_p = find_named_person(user)) == NULL)
	99	{
	100	/*
	101	** If the user has recently changed nick, automatically
	102	** rewrite the KILL for this new nickname--this keeps
	103	** servers in synch when nick change and kill collide
	104	*/
b47f8a4f	105	if((target_p = whowas_get_history(user, (long) KILLCHASETIMELIMIT)) == NULL)
212380e3 AC	106	{
	107	if (strchr(user, '.'))
	108	sendto_one_numeric(source_p, ERR_CANTKILLSERVER, form_str(ERR_CANTKILLSERVER));
	109	else
	110	sendto_one_numeric(source_p, ERR_NOSUCHNICK,
	111	form_str(ERR_NOSUCHNICK), user);
3c7d6fcc	112	return;
212380e3	113	}
5366977b	114	sendto_one_notice(source_p, ":KILL changed from %s to %s", user, target_p->name);
212380e3 AC	115	}
212380e3 AC	116
9d745dbd EM	117	/* Last chance to stop the kill */
	118	moduledata.client = source_p;
	119	moduledata.target = target_p;
	120	moduledata.approved = 1;
	121	call_hook(h_can_kill, &moduledata);
	122
	123	if (moduledata.approved == 0)
373a0439	124	/* The callee should have sent a message. */
3c7d6fcc	125	return;
9d745dbd	126
212380e3 AC	127	if(MyConnect(target_p))
	128	sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
	129	source_p->name, source_p->username, source_p->host,
	130	target_p->name, reason);
	131
	132	/* Do not change the format of this message. There's no point in changing messages
	133	* that have been around for ever, for no reason.. */
	134	sendto_realops_snomask(SNO_GENERAL, L_ALL,
8d090389	135	"Received KILL message for %s!%s@%s. From %s Path: %s (%s)",
55abcbb2	136	target_p->name, target_p->username, target_p->orighost,
3dfaa671	137	source_p->name, me.name, reason);
212380e3 AC	138
	139	ilog(L_KILL, "%c %s %s!%s@%s %s %s",
	140	MyConnect(target_p) ? 'L' : 'G', get_oper_name(source_p),
c88cdb00	141	target_p->name, target_p->username, target_p->host, target_p->servptr->name, reason);
212380e3 AC	142
	143	/*
	144	** And pass on the message to other servers. Note, that if KILL
	145	** was changed, the message has to be sent to all links, also
	146	** back.
	147	** Suicide kills are NOT passed on --SRB
	148	*/
	149	if(!MyConnect(target_p))
	150	{
	151	relay_kill(client_p, source_p, target_p, inpath, reason);
	152	/*
	153	** Set FLAGS_KILLED. This prevents exit_one_client from sending
	154	** the unnecessary QUIT for this. (This flag should never be
	155	** set in any other place)
	156	*/
	157	target_p->flags \|= FLAGS_KILLED;
	158	}
	159
5203cba5	160	sprintf(buf, "Killed (%s (%s))", source_p->name, reason);
212380e3 AC	161
212380e3 AC	162	exit_client(client_p, target_p, source_p, buf);
212380e3 AC	163	}
	164
	165	/*
	166	* ms_kill
212380e3 AC	167	* parv[1] = kill victim
	168	* parv[2] = kill path and reason
	169	*/
3c7d6fcc	170	static void
428ca87b	171	ms_kill(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	172	{
	173	struct Client *target_p;
	174	const char *user;
	175	const char *reason;
	176	char default_reason[] = "<No reason given>";
	177	const char *path;
212380e3 AC	178
	179	*buf = '\0';
	180
	181	user = parv[1];
	182
	183	if(EmptyString(parv[2]))
	184	{
	185	reason = default_reason;
	186
	187	/* hyb6 takes the nick of the killer from the path sigh --fl_ */
	188	path = source_p->name;
	189	}
	190	else
	191	{
	192	char s = LOCAL_COPY(parv[2]), t;
	193	t = strchr(s, ' ');
	194
	195	if(t)
	196	{
	197	*t = '\0';
	198	t++;
	199	reason = t;
	200	}
	201	else
	202	reason = default_reason;
	203
	204	path = s;
	205	}
	206
	207	if((target_p = find_person(user)) == NULL)
	208	{
	209	/*
55abcbb2	210	* If the user has recently changed nick, but only if its
212380e3 AC	211	* not an uid, automatically rewrite the KILL for this new nickname.
	212	* --this keeps servers in synch when nick change and kill collide
	213	*/
b47f8a4f	214	if(IsDigit(*user) \|\| (!(target_p = whowas_get_history(user, (long) KILLCHASETIMELIMIT))))
212380e3 AC	215	{
	216	sendto_one_numeric(source_p, ERR_NOSUCHNICK,
	217	form_str(ERR_NOSUCHNICK), IsDigit(user) ? "" : user);
3c7d6fcc	218	return;
212380e3 AC	219	}
212380e3 AC	220	sendto_one_notice(source_p, ":KILL changed from %s to %s", user, target_p->name);
212380e3 AC	221	}
	222
	223	if(IsServer(target_p) \|\| IsMe(target_p))
	224	{
	225	sendto_one_numeric(source_p, ERR_CANTKILLSERVER, form_str(ERR_CANTKILLSERVER));
3c7d6fcc	226	return;
212380e3 AC	227	}
	228
	229	if(MyConnect(target_p))
	230	{
	231	if(IsServer(source_p))
	232	{
	233	sendto_one(target_p, ":%s KILL %s :%s",
	234	source_p->name, target_p->name, reason);
	235	}
	236	else
	237	sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
	238	source_p->name, source_p->username, source_p->host,
	239	target_p->name, reason);
	240	}
	241
	242	/* Be warned, this message must be From %s, or it confuses clients
	243	* so dont change it to From: or the case or anything! -- fl -- db */
	244	/* path must contain at least 2 !'s, or bitchx falsely declares it
	245	* local --fl
	246	*/
	247	if(IsOper(source_p)) /* send it normally */
	248	{
	249	sendto_realops_snomask(IsService(source_p) ? SNO_SKILL : SNO_GENERAL, L_ALL,
8d090389	250	"Received KILL message for %s!%s@%s. From %s Path: %s!%s!%s!%s %s",
55abcbb2	251	target_p->name, target_p->username, target_p->orighost, source_p->name,
c88cdb00	252	source_p->servptr->name, source_p->host, source_p->username,
5366977b	253	source_p->name, reason);
212380e3 AC	254
	255	ilog(L_KILL, "%c %s %s!%s@%s %s %s",
	256	MyConnect(target_p) ? 'O' : 'R', get_oper_name(source_p),
	257	target_p->name, target_p->username, target_p->host,
c88cdb00	258	target_p->servptr->name, reason);
212380e3 AC	259	}
	260	else
	261	{
	262	sendto_realops_snomask(SNO_SKILL, L_ALL,
8d090389	263	"Received KILL message for %s!%s@%s. From %s %s",
d1d0629f	264	target_p->name, target_p->username, target_p->orighost,
3dfaa671	265	source_p->name, reason);
212380e3 AC	266
	267	ilog(L_KILL, "S %s %s!%s@%s %s %s",
	268	source_p->name, target_p->name, target_p->username,
c88cdb00	269	target_p->host, target_p->servptr->name, reason);
212380e3 AC	270	}
	271
	272	relay_kill(client_p, source_p, target_p, path, reason);
	273
	274	/* FLAGS_KILLED prevents a quit being sent out */
	275	target_p->flags \|= FLAGS_KILLED;
	276
5203cba5	277	sprintf(buf, "Killed (%s %s)", source_p->name, reason);
212380e3 AC	278
212380e3 AC	279	exit_client(client_p, target_p, source_p, buf);
212380e3 AC	280	}
	281
	282	static void
	283	relay_kill(struct Client one, struct Client source_p,
	284	struct Client target_p, const char inpath, const char *reason)
	285	{
	286	struct Client *client_p;
5b96d9a6	287	rb_dlink_node *ptr;
212380e3 AC	288	char buffer[BUFSIZE];
	289
	290	if(MyClient(source_p))
5203cba5	291	snprintf(buffer, sizeof(buffer),
212380e3 AC	292	"%s!%s!%s!%s (%s)",
	293	me.name, source_p->host, source_p->username, source_p->name, reason);
	294	else
5203cba5	295	snprintf(buffer, sizeof(buffer), "%s %s", inpath, reason);
212380e3	296
5b96d9a6	297	RB_DLINK_FOREACH(ptr, serv_list.head)
212380e3 AC	298	{
	299	client_p = ptr->data;
	300
	301	if(!client_p \|\| client_p == one)
	302	continue;
	303
	304	sendto_one(client_p, ":%s KILL %s :%s",
	305	get_id(source_p, client_p), get_id(target_p, client_p), buffer);
	306	}
	307	}