[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.
 */

#include "stdinc.h"
#include "class.h"
#include "hook.h"
#include "client.h"
#include "hash.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 const char etrace_desc[] =
    "Provides enhanced tracing facilities to opers (ETRACE, CHANTRACE, and MASKTRACE)";

static void mo_etrace(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void me_etrace(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void m_chantrace(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void 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_AV2(etrace, _modinit, _moddeinit, etrace_clist, NULL, NULL, NULL, NULL, etrace_desc);

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 void
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);
		else if(!irccmp(parv[1], "-v6"))
			do_etrace(source_p, 0, 1);
		else if(!irccmp(parv[1], "-v4"))
			do_etrace(source_p, 1, 0);
		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);
					sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), target_p->name);
				}
			}
			else
				sendto_one_numeric(source_p, ERR_NOSUCHNICK,
						form_str(ERR_NOSUCHNICK), parv[1]);
		}
	}
	else
		do_etrace(source_p, 1, 1);
}

static void
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;

	/* 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]);
}

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;

		if((!ipv4 && GET_SS_FAMILY(&target_p->localClient->ip) == AF_INET) ||
		   (!ipv6 && GET_SS_FAMILY(&target_p->localClient->ip) == AF_INET6))
			continue;

		sendto_one(source_p, form_str(RPL_ETRACE),
			   me.name, source_p->name,
			   SeesOper(target_p, source_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,
				SeesOper(target_p, source_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,
				SeesOper(target_p, source_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 void
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;
		}
	}

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

	/* 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;
	}

	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,
				SeesOper(target_p, source_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);
}

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,
				SeesOper(target_p, source_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 void
mo_masktrace(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc,
	const char *parv[])
{
	char *name, *username, *hostname, *gecos;

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

	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;
	}

	*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;
	}

	match_masktrace(source_p, &global_client_list, username, hostname, name, gecos);
	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
}
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.
212380e3 AC	31	*/
	32
	33	#include "stdinc.h"
	34	#include "class.h"
	35	#include "hook.h"
	36	#include "client.h"
	37	#include "hash.h"
212380e3	38	#include "hash.h"
4562c604	39	#include "match.h"
212380e3 AC	40	#include "ircd.h"
212380e3 AC	41	#include "numeric.h"
212380e3 AC	42	#include "s_serv.h"
	43	#include "s_conf.h"
	44	#include "s_newconf.h"
	45	#include "send.h"
	46	#include "msg.h"
	47	#include "parse.h"
	48	#include "modules.h"
77d3d2db	49	#include "logger.h"
0b904d91	50	#include "supported.h"
212380e3	51
eeabf33a EM	52	static const char etrace_desc[] =
	53	"Provides enhanced tracing facilities to opers (ETRACE, CHANTRACE, and MASKTRACE)";
	54
3c7d6fcc EM	55	static void mo_etrace(struct MsgBuf , struct Client , struct Client , int, const char *);
	56	static void me_etrace(struct MsgBuf , struct Client , struct Client , int, const char *);
	57	static void m_chantrace(struct MsgBuf , struct Client , struct Client , int, const char *);
	58	static void 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 };
9fd8e7cb	88
9fd8e7cb	89	DECLARE_MODULE_AV2(etrace, _modinit, _moddeinit, etrace_clist, NULL, NULL, NULL, NULL, etrace_desc);
212380e3 AC	90
	91	static void do_etrace(struct Client *source_p, int ipv4, int ipv6);
	92	static void do_etrace_full(struct Client *source_p);
	93	static void do_single_etrace(struct Client source_p, struct Client target_p);
	94
	95	static const char *empty_sockhost = "255.255.255.255";
	96	static const char *spoofed_sockhost = "0";
	97
	98	/*
	99	* m_etrace
212380e3 AC	100	* parv[1] = options [or target]
	101	* parv[2] = [target]
	102	*/
3c7d6fcc	103	static void
428ca87b	104	mo_etrace(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	105	{
	106	if(parc > 1 && !EmptyString(parv[1]))
	107	{
	108	if(!irccmp(parv[1], "-full"))
	109	do_etrace_full(source_p);
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);
212380e3 AC	114	else
	115	{
	116	struct Client *target_p = find_named_person(parv[1]);
	117
	118	if(target_p)
	119	{
	120	if(!MyClient(target_p))
	121	sendto_one(target_p, ":%s ENCAP %s ETRACE %s",
	122	get_id(source_p, target_p),
c88cdb00	123	target_p->servptr->name,
212380e3 AC	124	get_id(target_p, target_p));
212380e3 AC	125	else
cb317c5e	126	{
212380e3	127	do_single_etrace(source_p, target_p);
cb317c5e RS	128	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), target_p->name);
cb317c5e RS	129	}
212380e3 AC	130	}
	131	else
	132	sendto_one_numeric(source_p, ERR_NOSUCHNICK,
	133	form_str(ERR_NOSUCHNICK), parv[1]);
	134	}
	135	}
	136	else
	137	do_etrace(source_p, 1, 1);
212380e3 AC	138	}
212380e3 AC	139
3c7d6fcc	140	static void
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]))
3c7d6fcc	146	return;
212380e3 AC	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	153	target_p ? target_p->name : parv[1]);
212380e3 AC	154	}
	155
	156	static void
	157	do_etrace(struct Client *source_p, int ipv4, int ipv6)
	158	{
	159	struct Client *target_p;
5b96d9a6	160	rb_dlink_node *ptr;
212380e3 AC	161
212380e3 AC	162	/* report all direct connections */
5b96d9a6	163	RB_DLINK_FOREACH(ptr, lclient_list.head)
212380e3 AC	164	{
	165	target_p = ptr->data;
	166
032ef5ef AC	167	if((!ipv4 && GET_SS_FAMILY(&target_p->localClient->ip) == AF_INET) \|\|
032ef5ef AC	168	(!ipv6 && GET_SS_FAMILY(&target_p->localClient->ip) == AF_INET6))
212380e3	169	continue;
212380e3 AC	170
212380e3 AC	171	sendto_one(source_p, form_str(RPL_ETRACE),
55abcbb2	172	me.name, source_p->name,
1123eefc	173	SeesOper(target_p, source_p) ? "Oper" : "User",
212380e3 AC	174	get_client_class(target_p),
	175	target_p->name, target_p->username, target_p->host,
	176	show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255",
	177	target_p->info);
	178	}
	179
	180	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
	181	}
	182
	183	static void
	184	do_etrace_full(struct Client *source_p)
	185	{
5b96d9a6	186	rb_dlink_node *ptr;
212380e3	187
5b96d9a6	188	RB_DLINK_FOREACH(ptr, lclient_list.head)
212380e3 AC	189	{
	190	do_single_etrace(source_p, ptr->data);
	191	}
	192
	193	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
	194	}
	195
	196	/*
	197	* do_single_etrace - searches local clients and displays those matching
	198	* a pattern
	199	* input - source client, target client
	200	* output - etrace results
	201	* side effects - etrace results are displayed
	202	*/
	203	static void
	204	do_single_etrace(struct Client source_p, struct Client target_p)
	205	{
	206	/* note, we hide fullcaps for spoofed users, as mirc can often
	207	* advertise its internal ip address in the field --fl
	208	*/
	209	if(!show_ip(source_p, target_p))
	210	sendto_one(source_p, form_str(RPL_ETRACEFULL),
55abcbb2	211	me.name, source_p->name,
1123eefc	212	SeesOper(target_p, source_p) ? "Oper" : "User",
212380e3	213	get_client_class(target_p),
55abcbb2	214	target_p->name, target_p->username, target_p->host,
212380e3 AC	215	"255.255.255.255", "<hidden> <hidden>", target_p->info);
	216	else
	217	sendto_one(source_p, form_str(RPL_ETRACEFULL),
55abcbb2	218	me.name, source_p->name,
1123eefc	219	SeesOper(target_p, source_p) ? "Oper" : "User",
212380e3	220	get_client_class(target_p),
55abcbb2	221	target_p->name, target_p->username,
212380e3 AC	222	target_p->host, target_p->sockhost,
	223	target_p->localClient->fullcaps, target_p->info);
	224	}
	225
3c7d6fcc	226	static void
428ca87b	227	m_chantrace(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	228	{
	229	struct Client *target_p;
	230	struct Channel *chptr;
	231	struct membership *msptr;
	232	const char *sockhost;
	233	const char *name;
5b96d9a6	234	rb_dlink_node *ptr;
212380e3 AC	235	int operspy = 0;
	236
	237	name = parv[1];
	238
	239	if(IsOperSpy(source_p) && parv[1][0] == '!')
	240	{
	241	name++;
	242	operspy = 1;
	243
	244	if(EmptyString(name))
	245	{
	246	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
	247	me.name, source_p->name, "CHANTRACE");
3c7d6fcc	248	return;
212380e3 AC	249	}
	250	}
	251
	252	if((chptr = find_channel(name)) == NULL)
	253	{
	254	sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL),
	255	name);
3c7d6fcc	256	return;
212380e3 AC	257	}
	258
	259	/* dont report operspys for nonexistant channels. */
	260	if(operspy)
	261	report_operspy(source_p, "CHANTRACE", chptr->chname);
	262
	263	if(!operspy && !IsMember(client_p, chptr))
	264	{
	265	sendto_one_numeric(source_p, ERR_NOTONCHANNEL, form_str(ERR_NOTONCHANNEL),
	266	chptr->chname);
3c7d6fcc	267	return;
212380e3 AC	268	}
212380e3 AC	269
5b96d9a6	270	RB_DLINK_FOREACH(ptr, chptr->members.head)
212380e3 AC	271	{
	272	msptr = ptr->data;
	273	target_p = msptr->client_p;
	274
	275	if(EmptyString(target_p->sockhost))
	276	sockhost = empty_sockhost;
	277	else if(!show_ip(source_p, target_p))
	278	sockhost = spoofed_sockhost;
	279	else
	280	sockhost = target_p->sockhost;
	281
	282	sendto_one(source_p, form_str(RPL_ETRACE),
55abcbb2	283	me.name, source_p->name,
1123eefc	284	SeesOper(target_p, source_p) ? "Oper" : "User",
212380e3 AC	285	/* class field -- pretend its server.. */
	286	target_p->servptr->name,
	287	target_p->name, target_p->username, target_p->host,
	288	sockhost, target_p->info);
	289	}
	290
	291	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
212380e3 AC	292	}
	293
	294	static void
5b96d9a6	295	match_masktrace(struct Client source_p, rb_dlink_list list,
212380e3 AC	296	const char username, const char hostname, const char *name,
	297	const char *gecos)
	298	{
	299	struct Client *target_p;
5b96d9a6	300	rb_dlink_node *ptr;
55abcbb2 KB	301	const char *sockhost;
55abcbb2 KB	302
5b96d9a6	303	RB_DLINK_FOREACH(ptr, list->head)
212380e3 AC	304	{
	305	target_p = ptr->data;
	306	if(!IsPerson(target_p))
	307	continue;
55abcbb2	308
212380e3 AC	309	if(EmptyString(target_p->sockhost))
	310	sockhost = empty_sockhost;
	311	else if(!show_ip(source_p, target_p))
	312	sockhost = spoofed_sockhost;
	313	else
	314	sockhost = target_p->sockhost;
	315
	316	if(match(username, target_p->username) &&
	317	(match(hostname, target_p->host) \|\|
	318	match(hostname, target_p->orighost) \|\|
	319	match(hostname, sockhost) \|\| match_ips(hostname, sockhost)))
	320	{
	321	if(name != NULL && !match(name, target_p->name))
	322	continue;
	323
39b23540	324	if(gecos != NULL && !match_esc(gecos, target_p->info))
212380e3	325	continue;
55abcbb2	326
212380e3	327	sendto_one(source_p, form_str(RPL_ETRACE),
55abcbb2	328	me.name, source_p->name,
1123eefc	329	SeesOper(target_p, source_p) ? "Oper" : "User",
212380e3 AC	330	/* class field -- pretend its server.. */
	331	target_p->servptr->name,
	332	target_p->name, target_p->username, target_p->host,
	333	sockhost, target_p->info);
	334	}
	335	}
	336	}
	337
3c7d6fcc	338	static void
428ca87b	339	mo_masktrace(struct MsgBuf msgbuf_p, struct Client client_p, struct Client *source_p, int parc,
212380e3 AC	340	const char *parv[])
	341	{
	342	char name, username, hostname, gecos;
212380e3	343
55abcbb2	344	name = LOCAL_COPY(parv[1]);
212380e3 AC	345	collapse(name);
212380e3 AC	346
212380e3 AC	347	if(parc > 2 && !EmptyString(parv[2]))
	348	{
	349	gecos = LOCAL_COPY(parv[2]);
	350	collapse_esc(gecos);
	351	} else
	352	gecos = NULL;
55abcbb2	353
212380e3 AC	354
	355	if((hostname = strchr(name, '@')) == NULL)
	356	{
5366977b	357	sendto_one_notice(source_p, ":Invalid parameters");
3c7d6fcc	358	return;
212380e3 AC	359	}
	360
	361	*hostname++ = '\0';
55abcbb2	362
212380e3 AC	363	if((username = strchr(name, '!')) == NULL)
	364	{
	365	username = name;
	366	name = NULL;
	367	} else
	368	*username++ = '\0';
	369
	370	if(EmptyString(username) \|\| EmptyString(hostname))
	371	{
5366977b	372	sendto_one_notice(source_p, ":Invalid parameters");
3c7d6fcc	373	return;
212380e3	374	}
55abcbb2	375
12cee8ab	376	match_masktrace(source_p, &global_client_list, username, hostname, name, gecos);
55abcbb2	377	sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
212380e3	378	}