[solanum.git] / modules / m_etrace.c

/*
 *  ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd).
 *  m_etrace.c: Gives local opers a trace output with added info.
 *
 *  Copyright (C) 2002-2003 Lee Hardy <lee@leeh.co.uk>
 *  Copyright (C) 2002-2005 ircd-ratbox development team
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are
 *  met:
 *
 *  1.Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  2.Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  3.The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 *  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 *  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 *  IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 *
 *  $Id: m_etrace.c 3161 2007-01-25 07:23:01Z nenolod $
 */

#include "stdinc.h"
#include "class.h"
#include "hook.h"
#include "client.h"
#include "hash.h"
#include "common.h"
#include "hash.h"
#include "match.h"
#include "ircd.h"
#include "numeric.h"
#include "s_serv.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "logger.h"
#include "supported.h"

static int mo_etrace(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static int me_etrace(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static int m_chantrace(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static int mo_masktrace(struct MsgBuf *, struct Client *, struct Client *, int, const char **);

struct Message etrace_msgtab = {
	"ETRACE", 0, 0, 0, 0,
	{mg_ignore, mg_not_oper, mg_ignore, mg_ignore, {me_etrace, 0}, {mo_etrace, 0}}
};
struct Message chantrace_msgtab = {
	"CHANTRACE", 0, 0, 0, 0,
	{mg_ignore, {m_chantrace, 2}, mg_ignore, mg_ignore, mg_ignore, {m_chantrace, 2}}
};
struct Message masktrace_msgtab = {
	"MASKTRACE", 0, 0, 0, 0,
	{mg_ignore, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_masktrace, 2}}
};

static int
_modinit(void)
{
    add_isupport("ETRACE", isupport_string, "");

    return 0;
}

static void
_moddeinit(void)
{
    delete_isupport("ETRACE");
}

mapi_clist_av1 etrace_clist[] = { &etrace_msgtab, &chantrace_msgtab, &masktrace_msgtab, NULL };
DECLARE_MODULE_AV1(etrace, _modinit, _moddeinit, etrace_clist, NULL, NULL, "$Revision: 3161 $");

static void do_etrace(struct Client *source_p, int ipv4, int ipv6);
static void do_etrace_full(struct Client *source_p);
static void do_single_etrace(struct Client *source_p, struct Client *target_p);

static const char *empty_sockhost = "255.255.255.255";
static const char *spoofed_sockhost = "0";

/*
 * m_etrace
 *      parv[1] = options [or target]
 *	parv[2] = [target]
 */
static int
mo_etrace(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	if(parc > 1 && !EmptyString(parv[1]))
	{
		if(!irccmp(parv[1], "-full"))
			do_etrace_full(source_p);
#ifdef RB_IPV6
		else if(!irccmp(parv[1], "-v6"))
			do_etrace(source_p, 0, 1);
		else if(!irccmp(parv[1], "-v4"))
			do_etrace(source_p, 1, 0);
#endif
		else
		{
			struct Client *target_p = find_named_person(parv[1]);

			if(target_p)
			{
				if(!MyClient(target_p))
					sendto_one(target_p, ":%s ENCAP %s ETRACE %s",
						get_id(source_p, target_p),
						target_p->servptr->name,
						get_id(target_p, target_p));
				else
					do_single_etrace(source_p, target_p);
			}
			else
				sendto_one_numeric(source_p, ERR_NOSUCHNICK,
						form_str(ERR_NOSUCHNICK), parv[1]);
		}
	}
	else
		do_etrace(source_p, 1, 1);

	return 0;
}

static int
me_etrace(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	struct Client *target_p;

	if(!IsOper(source_p) || parc < 2 || EmptyString(parv[1]))
		return 0;

	/* we cant etrace remote clients.. we shouldnt even get sent them */
	if((target_p = find_person(parv[1])) && MyClient(target_p))
		do_single_etrace(source_p, target_p);

        sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE),
				target_p ? target_p->name : parv[1]);

	return 0;
}

static void
do_etrace(struct Client *source_p, int ipv4, int ipv6)
{
	struct Client *target_p;
	rb_dlink_node *ptr;

	/* report all direct connections */
	RB_DLINK_FOREACH(ptr, lclient_list.head)
	{
		target_p = ptr->data;

#ifdef RB_IPV6
		if((!ipv4 && target_p->localClient->ip.ss_family == AF_INET) ||
		   (!ipv6 && target_p->localClient->ip.ss_family == AF_INET6))
			continue;
#endif

		sendto_one(source_p, form_str(RPL_ETRACE),
			   me.name, source_p->name,
			   IsOper(target_p) ? "Oper" : "User",
			   get_client_class(target_p),
			   target_p->name, target_p->username, target_p->host,
			   show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255",
			   target_p->info);
	}

	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
}

static void
do_etrace_full(struct Client *source_p)
{
	rb_dlink_node *ptr;

	RB_DLINK_FOREACH(ptr, lclient_list.head)
	{
		do_single_etrace(source_p, ptr->data);
	}

	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
}

/*
 * do_single_etrace  - searches local clients and displays those matching
 *                     a pattern
 * input             - source client, target client
 * output	     - etrace results
 * side effects	     - etrace results are displayed
 */
static void
do_single_etrace(struct Client *source_p, struct Client *target_p)
{
	/* note, we hide fullcaps for spoofed users, as mirc can often
	 * advertise its internal ip address in the field --fl
	 */
	if(!show_ip(source_p, target_p))
		sendto_one(source_p, form_str(RPL_ETRACEFULL),
				me.name, source_p->name,
				IsOper(target_p) ? "Oper" : "User",
				get_client_class(target_p),
				target_p->name, target_p->username, target_p->host,
				"255.255.255.255", "<hidden> <hidden>", target_p->info);
	else
		sendto_one(source_p, form_str(RPL_ETRACEFULL),
				me.name, source_p->name,
				IsOper(target_p) ? "Oper" : "User",
				get_client_class(target_p),
				target_p->name, target_p->username,
				target_p->host, target_p->sockhost,
				target_p->localClient->fullcaps, target_p->info);
}

static int
m_chantrace(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	struct Client *target_p;
	struct Channel *chptr;
	struct membership *msptr;
	const char *sockhost;
	const char *name;
	rb_dlink_node *ptr;
	int operspy = 0;

	name = parv[1];

	if(IsOperSpy(source_p) && parv[1][0] == '!')
	{
		name++;
		operspy = 1;

		if(EmptyString(name))
		{
			sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
					me.name, source_p->name, "CHANTRACE");
			return 0;
		}
	}

	if((chptr = find_channel(name)) == NULL)
	{
		sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL),
				name);
		return 0;
	}

	/* dont report operspys for nonexistant channels. */
	if(operspy)
		report_operspy(source_p, "CHANTRACE", chptr->chname);

	if(!operspy && !IsMember(client_p, chptr))
	{
		sendto_one_numeric(source_p, ERR_NOTONCHANNEL, form_str(ERR_NOTONCHANNEL),
				chptr->chname);
		return 0;
	}

	RB_DLINK_FOREACH(ptr, chptr->members.head)
	{
		msptr = ptr->data;
		target_p = msptr->client_p;

		if(EmptyString(target_p->sockhost))
			sockhost = empty_sockhost;
		else if(!show_ip(source_p, target_p))
			sockhost = spoofed_sockhost;
		else
			sockhost = target_p->sockhost;

		sendto_one(source_p, form_str(RPL_ETRACE),
				me.name, source_p->name,
				IsOper(target_p) ? "Oper" : "User",
				/* class field -- pretend its server.. */
				target_p->servptr->name,
				target_p->name, target_p->username, target_p->host,
				sockhost, target_p->info);
	}

	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
	return 0;
}

static void
match_masktrace(struct Client *source_p, rb_dlink_list *list,
	const char *username, const char *hostname, const char *name,
	const char *gecos)
{
	struct Client *target_p;
	rb_dlink_node *ptr;
	const char *sockhost;

	RB_DLINK_FOREACH(ptr, list->head)
	{
		target_p = ptr->data;
		if(!IsPerson(target_p))
			continue;

		if(EmptyString(target_p->sockhost))
			sockhost = empty_sockhost;
		else if(!show_ip(source_p, target_p))
			sockhost = spoofed_sockhost;
		else
			sockhost = target_p->sockhost;

		if(match(username, target_p->username) &&
		   (match(hostname, target_p->host) ||
		    match(hostname, target_p->orighost) ||
		    match(hostname, sockhost) || match_ips(hostname, sockhost)))
		{
			if(name != NULL && !match(name, target_p->name))
				continue;

			if(gecos != NULL && !match_esc(gecos, target_p->info))
				continue;

			sendto_one(source_p, form_str(RPL_ETRACE),
				me.name, source_p->name,
				IsOper(target_p) ? "Oper" : "User",
				/* class field -- pretend its server.. */
				target_p->servptr->name,
				target_p->name, target_p->username, target_p->host,
				sockhost, target_p->info);
		}
	}
}

static int
mo_masktrace(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc,
	const char *parv[])
{
	char *name, *username, *hostname, *gecos;
	const char *mask;
	int operspy = 0;

	mask = parv[1];
	name = LOCAL_COPY(parv[1]);
	collapse(name);

	if(IsOperSpy(source_p) && parv[1][0] == '!')
	{
		name++;
		mask++;
		operspy = 1;
	}

	if(parc > 2 && !EmptyString(parv[2]))
	{
		gecos = LOCAL_COPY(parv[2]);
		collapse_esc(gecos);
	} else
		gecos = NULL;


	if((hostname = strchr(name, '@')) == NULL)
	{
		sendto_one_notice(source_p, ":Invalid parameters");
		return 0;
	}

	*hostname++ = '\0';

	if((username = strchr(name, '!')) == NULL)
	{
		username = name;
		name = NULL;
	} else
		*username++ = '\0';

	if(EmptyString(username) || EmptyString(hostname))
	{
		sendto_one_notice(source_p, ":Invalid parameters");
		return 0;
	}

	if(operspy) {
		if (!ConfigFileEntry.operspy_dont_care_user_info)
		{
			char buf[512];
			rb_strlcpy(buf, mask, sizeof(buf));
			if(!EmptyString(gecos)) {
				rb_strlcat(buf, " ", sizeof(buf));
				rb_strlcat(buf, gecos, sizeof(buf));
			}

			report_operspy(source_p, "MASKTRACE", buf);
		}
		match_masktrace(source_p, &global_client_list, username, hostname, name, gecos);
	} else
		match_masktrace(source_p, &lclient_list, username, hostname, name, gecos);

	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
	return 0;
}
Commit	Line	Data
212380e3 AC	1	/*
	2	* ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd).
	3	* m_etrace.c: Gives local opers a trace output with added info.
	4	*
	5	* Copyright (C) 2002-2003 Lee Hardy <lee@leeh.co.uk>
	6	* Copyright (C) 2002-2005 ircd-ratbox development team
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions are
	10	* met:
	11	*
	12	* 1.Redistributions of source code must retain the above copyright notice,
	13	* this list of conditions and the following disclaimer.
	14	* 2.Redistributions in binary form must reproduce the above copyright
	15	* notice, this list of conditions and the following disclaimer in the
	16	* documentation and/or other materials provided with the distribution.
	17	* 3.The name of the author may not be used to endorse or promote products
	18	* derived from this software without specific prior written permission.
	19	*
	20	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	21	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	22	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	23	* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
	24	* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	25	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	26	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	27	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	28	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	29	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	30	* POSSIBILITY OF SUCH DAMAGE.
	31	*
5366977b	32	* $Id: m_etrace.c 3161 2007-01-25 07:23:01Z nenolod $
212380e3 AC	33	*/
	34
	35	#include "stdinc.h"
	36	#include "class.h"
	37	#include "hook.h"
	38	#include "client.h"
	39	#include "hash.h"
	40	#include "common.h"
	41	#include "hash.h"
4562c604	42	#include "match.h"
212380e3 AC	43	#include "ircd.h"
212380e3 AC	44	#include "numeric.h"
212380e3 AC	45	#include "s_serv.h"
	46	#include "s_conf.h"
	47	#include "s_newconf.h"
	48	#include "send.h"
	49	#include "msg.h"
	50	#include "parse.h"
	51	#include "modules.h"
77d3d2db	52	#include "logger.h"
0b904d91	53	#include "supported.h"
212380e3	54
428ca87b AC	55	static int mo_etrace(struct MsgBuf , struct Client , struct Client , int, const char *);
	56	static int me_etrace(struct MsgBuf , struct Client , struct Client , int, const char *);
	57	static int m_chantrace(struct MsgBuf , struct Client , struct Client , int, const char *);
	58	static int mo_masktrace(struct MsgBuf , struct Client , struct Client , int, const char *);
212380e3 AC	59
212380e3 AC	60	struct Message etrace_msgtab = {
7baa37a9	61	"ETRACE", 0, 0, 0, 0,
212380e3 AC	62	{mg_ignore, mg_not_oper, mg_ignore, mg_ignore, {me_etrace, 0}, {mo_etrace, 0}}
	63	};
	64	struct Message chantrace_msgtab = {
7baa37a9	65	"CHANTRACE", 0, 0, 0, 0,
5807e0be	66	{mg_ignore, {m_chantrace, 2}, mg_ignore, mg_ignore, mg_ignore, {m_chantrace, 2}}
212380e3 AC	67	};
212380e3 AC	68	struct Message masktrace_msgtab = {
7baa37a9	69	"MASKTRACE", 0, 0, 0, 0,
212380e3 AC	70	{mg_ignore, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_masktrace, 2}}
	71	};
	72
0b904d91 AC	73	static int
	74	_modinit(void)
	75	{
	76	add_isupport("ETRACE", isupport_string, "");
	77
	78	return 0;
	79	}
	80
	81	static void
	82	_moddeinit(void)
	83	{
	84	delete_isupport("ETRACE");
	85	}
	86
212380e3	87	mapi_clist_av1 etrace_clist[] = { &etrace_msgtab, &chantrace_msgtab, &masktrace_msgtab, NULL };
0b904d91	88	DECLARE_MODULE_AV1(etrace, _modinit, _moddeinit, etrace_clist, NULL, NULL, "$Revision: 3161 $");
212380e3 AC	89
	90	static void do_etrace(struct Client *source_p, int ipv4, int ipv6);
	91	static void do_etrace_full(struct Client *source_p);
	92	static void do_single_etrace(struct Client source_p, struct Client target_p);
	93
	94	static const char *empty_sockhost = "255.255.255.255";
	95	static const char *spoofed_sockhost = "0";
	96
	97	/*
	98	* m_etrace
212380e3 AC	99	* parv[1] = options [or target]
	100	* parv[2] = [target]
	101	*/
	102	static int
428ca87b	103	mo_etrace(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	104	{
	105	if(parc > 1 && !EmptyString(parv[1]))
	106	{
	107	if(!irccmp(parv[1], "-full"))
	108	do_etrace_full(source_p);
ccda6e3f	109	#ifdef RB_IPV6
212380e3 AC	110	else if(!irccmp(parv[1], "-v6"))
	111	do_etrace(source_p, 0, 1);
	112	else if(!irccmp(parv[1], "-v4"))
	113	do_etrace(source_p, 1, 0);
	114	#endif
	115	else
	116	{
	117	struct Client *target_p = find_named_person(parv[1]);
	118
	119	if(target_p)
	120	{
	121	if(!MyClient(target_p))
	122	sendto_one(target_p, ":%s ENCAP %s ETRACE %s",
	123	get_id(source_p, target_p),
c88cdb00	124	target_p->servptr->name,
212380e3 AC	125	get_id(target_p, target_p));
	126	else
	127	do_single_etrace(source_p, target_p);
	128	}
	129	else
	130	sendto_one_numeric(source_p, ERR_NOSUCHNICK,
	131	form_str(ERR_NOSUCHNICK), parv[1]);
	132	}
	133	}
	134	else
	135	do_etrace(source_p, 1, 1);
	136
	137	return 0;
	138	}
	139
	140	static int
428ca87b	141	me_etrace(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	142	{
	143	struct Client *target_p;
	144
	145	if(!IsOper(source_p) \|\| parc < 2 \|\| EmptyString(parv[1]))
	146	return 0;
	147
	148	/* we cant etrace remote clients.. we shouldnt even get sent them */
	149	if((target_p = find_person(parv[1])) && MyClient(target_p))
	150	do_single_etrace(source_p, target_p);
	151
55abcbb2	152	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE),
212380e3 AC	153	target_p ? target_p->name : parv[1]);
	154
	155	return 0;
	156	}
	157
	158	static void
	159	do_etrace(struct Client *source_p, int ipv4, int ipv6)
	160	{
	161	struct Client *target_p;
5b96d9a6	162	rb_dlink_node *ptr;
212380e3 AC	163
212380e3 AC	164	/* report all direct connections */
5b96d9a6	165	RB_DLINK_FOREACH(ptr, lclient_list.head)
212380e3 AC	166	{
	167	target_p = ptr->data;
	168
ccda6e3f	169	#ifdef RB_IPV6
212380e3 AC	170	if((!ipv4 && target_p->localClient->ip.ss_family == AF_INET) \|\|
	171	(!ipv6 && target_p->localClient->ip.ss_family == AF_INET6))
	172	continue;
	173	#endif
	174
	175	sendto_one(source_p, form_str(RPL_ETRACE),
55abcbb2 KB	176	me.name, source_p->name,
55abcbb2 KB	177	IsOper(target_p) ? "Oper" : "User",
212380e3 AC	178	get_client_class(target_p),
	179	target_p->name, target_p->username, target_p->host,
	180	show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255",
	181	target_p->info);
	182	}
	183
	184	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
	185	}
	186
	187	static void
	188	do_etrace_full(struct Client *source_p)
	189	{
5b96d9a6	190	rb_dlink_node *ptr;
212380e3	191
5b96d9a6	192	RB_DLINK_FOREACH(ptr, lclient_list.head)
212380e3 AC	193	{
	194	do_single_etrace(source_p, ptr->data);
	195	}
	196
	197	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
	198	}
	199
	200	/*
	201	* do_single_etrace - searches local clients and displays those matching
	202	* a pattern
	203	* input - source client, target client
	204	* output - etrace results
	205	* side effects - etrace results are displayed
	206	*/
	207	static void
	208	do_single_etrace(struct Client source_p, struct Client target_p)
	209	{
	210	/* note, we hide fullcaps for spoofed users, as mirc can often
	211	* advertise its internal ip address in the field --fl
	212	*/
	213	if(!show_ip(source_p, target_p))
	214	sendto_one(source_p, form_str(RPL_ETRACEFULL),
55abcbb2	215	me.name, source_p->name,
212380e3 AC	216	IsOper(target_p) ? "Oper" : "User",
212380e3 AC	217	get_client_class(target_p),
55abcbb2	218	target_p->name, target_p->username, target_p->host,
212380e3 AC	219	"255.255.255.255", "<hidden> <hidden>", target_p->info);
	220	else
	221	sendto_one(source_p, form_str(RPL_ETRACEFULL),
55abcbb2	222	me.name, source_p->name,
212380e3 AC	223	IsOper(target_p) ? "Oper" : "User",
212380e3 AC	224	get_client_class(target_p),
55abcbb2	225	target_p->name, target_p->username,
212380e3 AC	226	target_p->host, target_p->sockhost,
	227	target_p->localClient->fullcaps, target_p->info);
	228	}
	229
	230	static int
428ca87b	231	m_chantrace(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	232	{
	233	struct Client *target_p;
	234	struct Channel *chptr;
	235	struct membership *msptr;
	236	const char *sockhost;
	237	const char *name;
5b96d9a6	238	rb_dlink_node *ptr;
212380e3 AC	239	int operspy = 0;
	240
	241	name = parv[1];
	242
	243	if(IsOperSpy(source_p) && parv[1][0] == '!')
	244	{
	245	name++;
	246	operspy = 1;
	247
	248	if(EmptyString(name))
	249	{
	250	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
	251	me.name, source_p->name, "CHANTRACE");
	252	return 0;
	253	}
	254	}
	255
	256	if((chptr = find_channel(name)) == NULL)
	257	{
	258	sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL),
	259	name);
	260	return 0;
	261	}
	262
	263	/* dont report operspys for nonexistant channels. */
	264	if(operspy)
	265	report_operspy(source_p, "CHANTRACE", chptr->chname);
	266
	267	if(!operspy && !IsMember(client_p, chptr))
	268	{
	269	sendto_one_numeric(source_p, ERR_NOTONCHANNEL, form_str(ERR_NOTONCHANNEL),
	270	chptr->chname);
	271	return 0;
	272	}
	273
5b96d9a6	274	RB_DLINK_FOREACH(ptr, chptr->members.head)
212380e3 AC	275	{
	276	msptr = ptr->data;
	277	target_p = msptr->client_p;
	278
	279	if(EmptyString(target_p->sockhost))
	280	sockhost = empty_sockhost;
	281	else if(!show_ip(source_p, target_p))
	282	sockhost = spoofed_sockhost;
	283	else
	284	sockhost = target_p->sockhost;
	285
	286	sendto_one(source_p, form_str(RPL_ETRACE),
55abcbb2	287	me.name, source_p->name,
212380e3 AC	288	IsOper(target_p) ? "Oper" : "User",
	289	/* class field -- pretend its server.. */
	290	target_p->servptr->name,
	291	target_p->name, target_p->username, target_p->host,
	292	sockhost, target_p->info);
	293	}
	294
	295	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
	296	return 0;
	297	}
	298
	299	static void
5b96d9a6	300	match_masktrace(struct Client source_p, rb_dlink_list list,
212380e3 AC	301	const char username, const char hostname, const char *name,
	302	const char *gecos)
	303	{
	304	struct Client *target_p;
5b96d9a6	305	rb_dlink_node *ptr;
55abcbb2 KB	306	const char *sockhost;
55abcbb2 KB	307
5b96d9a6	308	RB_DLINK_FOREACH(ptr, list->head)
212380e3 AC	309	{
	310	target_p = ptr->data;
	311	if(!IsPerson(target_p))
	312	continue;
55abcbb2	313
212380e3 AC	314	if(EmptyString(target_p->sockhost))
	315	sockhost = empty_sockhost;
	316	else if(!show_ip(source_p, target_p))
	317	sockhost = spoofed_sockhost;
	318	else
	319	sockhost = target_p->sockhost;
	320
	321	if(match(username, target_p->username) &&
	322	(match(hostname, target_p->host) \|\|
	323	match(hostname, target_p->orighost) \|\|
	324	match(hostname, sockhost) \|\| match_ips(hostname, sockhost)))
	325	{
	326	if(name != NULL && !match(name, target_p->name))
	327	continue;
	328
39b23540	329	if(gecos != NULL && !match_esc(gecos, target_p->info))
212380e3	330	continue;
55abcbb2	331
212380e3	332	sendto_one(source_p, form_str(RPL_ETRACE),
55abcbb2	333	me.name, source_p->name,
212380e3 AC	334	IsOper(target_p) ? "Oper" : "User",
	335	/* class field -- pretend its server.. */
	336	target_p->servptr->name,
	337	target_p->name, target_p->username, target_p->host,
	338	sockhost, target_p->info);
	339	}
	340	}
	341	}
	342
	343	static int
428ca87b	344	mo_masktrace(struct MsgBuf msgbuf_p, struct Client client_p, struct Client *source_p, int parc,
212380e3 AC	345	const char *parv[])
	346	{
	347	char name, username, hostname, gecos;
	348	const char *mask;
	349	int operspy = 0;
	350
55abcbb2 KB	351	mask = parv[1];
55abcbb2 KB	352	name = LOCAL_COPY(parv[1]);
212380e3 AC	353	collapse(name);
	354
	355	if(IsOperSpy(source_p) && parv[1][0] == '!')
	356	{
	357	name++;
	358	mask++;
	359	operspy = 1;
55abcbb2 KB	360	}
55abcbb2 KB	361
212380e3 AC	362	if(parc > 2 && !EmptyString(parv[2]))
	363	{
	364	gecos = LOCAL_COPY(parv[2]);
	365	collapse_esc(gecos);
	366	} else
	367	gecos = NULL;
55abcbb2	368
212380e3 AC	369
	370	if((hostname = strchr(name, '@')) == NULL)
	371	{
5366977b	372	sendto_one_notice(source_p, ":Invalid parameters");
212380e3 AC	373	return 0;
	374	}
	375
	376	*hostname++ = '\0';
55abcbb2	377
212380e3 AC	378	if((username = strchr(name, '!')) == NULL)
	379	{
	380	username = name;
	381	name = NULL;
	382	} else
	383	*username++ = '\0';
	384
	385	if(EmptyString(username) \|\| EmptyString(hostname))
	386	{
5366977b	387	sendto_one_notice(source_p, ":Invalid parameters");
212380e3 AC	388	return 0;
212380e3 AC	389	}
55abcbb2	390
212380e3 AC	391	if(operspy) {
	392	if (!ConfigFileEntry.operspy_dont_care_user_info)
	393	{
	394	char buf[512];
f427c8b0	395	rb_strlcpy(buf, mask, sizeof(buf));
212380e3	396	if(!EmptyString(gecos)) {
1f9de103 VY	397	rb_strlcat(buf, " ", sizeof(buf));
1f9de103 VY	398	rb_strlcat(buf, gecos, sizeof(buf));
55abcbb2	399	}
212380e3	400
55abcbb2	401	report_operspy(source_p, "MASKTRACE", buf);
212380e3	402	}
55abcbb2	403	match_masktrace(source_p, &global_client_list, username, hostname, name, gecos);
212380e3 AC	404	} else
	405	match_masktrace(source_p, &lclient_list, username, hostname, name, gecos);
	406
55abcbb2	407	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
212380e3 AC	408	return 0;
212380e3 AC	409	}