[solanum.git] / modules / m_services.c

/* modules/m_services.c
 *   Copyright (C) 2005 Lee Hardy <lee -at- leeh.co.uk>
 *   Copyright (C) 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_services.c 1907 2006-08-29 19:18:15Z jilles $
 */

#include "stdinc.h"

#include "send.h"
#include "channel.h"
#include "client.h"
#include "common.h"
#include "config.h"
#include "ircd.h"
#include "numeric.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "s_serv.h"
#include "hash.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "whowas.h"
#include "monitor.h"

static int me_su(struct Client *, struct Client *, int, const char **);
static int me_login(struct Client *, struct Client *, int, const char **);
static int me_rsfnc(struct Client *, struct Client *, int, const char **);
static int me_nickdelay(struct Client *, struct Client *, int, const char **);

static void h_svc_server_introduced(hook_data_client *);
static void h_svc_whois(hook_data_client *);
static void h_svc_stats(hook_data_int *);

struct Message su_msgtab = {
	"SU", 0, 0, 0, MFLG_SLOW,
	{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_su, 2}, mg_ignore}
};
struct Message login_msgtab = {
	"LOGIN", 0, 0, 0, MFLG_SLOW,
	{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_login, 2}, mg_ignore}
};
struct Message rsfnc_msgtab = {
	"RSFNC", 0, 0, 0, MFLG_SLOW,
	{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_rsfnc, 4}, mg_ignore}
};
struct Message nickdelay_msgtab = {
	"NICKDELAY", 0, 0, 0, MFLG_SLOW,
	{mg_unreg, mg_ignore, mg_ignore, mg_ignore, {me_nickdelay, 3}, mg_ignore}
};

mapi_clist_av1 services_clist[] = { 
	&su_msgtab, &login_msgtab, &rsfnc_msgtab, &nickdelay_msgtab, NULL
};
mapi_hfn_list_av1 services_hfnlist[] = {
	{ "doing_stats",	(hookfn) h_svc_stats },
	{ "doing_whois",	(hookfn) h_svc_whois },
	{ "doing_whois_global",	(hookfn) h_svc_whois },
	{ "server_introduced",	(hookfn) h_svc_server_introduced },
	{ NULL, NULL }
};

DECLARE_MODULE_AV1(services, NULL, NULL, services_clist, NULL, services_hfnlist, "$Revision: 1907 $");

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

	if(!(source_p->flags & FLAGS_SERVICE))
		return 0;

	if((target_p = find_client(parv[1])) == NULL)
		return 0;

	if(!target_p->user)
		return 0;

	if(EmptyString(parv[2]))
		target_p->user->suser[0] = '\0';
	else
		rb_strlcpy(target_p->user->suser, parv[2], sizeof(target_p->user->suser));

	sendto_common_channels_local_butone(target_p, CLICAP_ACCOUNT_NOTIFY, ":%s!%s@%s ACCOUNT %s",
					    target_p->name, target_p->username, target_p->host,
					    EmptyString(target_p->user->suser) ? "*" : target_p->user->suser);

	invalidate_bancache_user(target_p);

	return 0;
}

static int
me_login(struct Client *client_p, struct Client *source_p,
	int parc, const char *parv[])
{
	if(!IsPerson(source_p))
		return 0;

	rb_strlcpy(source_p->user->suser, parv[1], sizeof(source_p->user->suser));
	return 0;
}

static int
clean_nick(const char *nick)
{
	int len = 0;

	if(EmptyString(nick) || *nick == '-' || IsDigit(*nick))
		return 0;

	for(; *nick; nick++)
	{
		len++;
		if(!IsNickChar(*nick))
			return 0;
	}

	if(len >= NICKLEN)
		return 0;

	return 1;
}

static int
me_rsfnc(struct Client *client_p, struct Client *source_p,
	int parc, const char *parv[])
{
	struct Client *target_p;
	struct Client *exist_p;
	time_t newts, curts;
	char note[NICKLEN + 10];

	if(!(source_p->flags & FLAGS_SERVICE))
		return 0;

	if((target_p = find_person(parv[1])) == NULL)
		return 0;

	if(!MyClient(target_p))
		return 0;

	if(!clean_nick(parv[2]))
		return 0;

	curts = atol(parv[4]);

	/* if tsinfo is different from what it was when services issued the
	 * RSFNC, then we ignore it.  This can happen when a client changes
	 * nicknames before the RSFNC arrives.. --anfl
	 */
	if(target_p->tsinfo != curts)
		return 0;

	if((exist_p = find_named_client(parv[2])))
	{
		char buf[BUFSIZE];

		/* this would be one hell of a race condition to trigger
		 * this one given the tsinfo check above, but its here for 
		 * safety --anfl
		 */
		if(target_p == exist_p)
			goto doit;

		if(MyClient(exist_p))
			sendto_one(exist_p, ":%s KILL %s :(Nickname regained by services)",
				me.name, exist_p->name);

		exist_p->flags |= FLAGS_KILLED;
		/* Do not send kills to servers for unknowns -- jilles */
		if(IsClient(exist_p))
		{
			kill_client_serv_butone(NULL, exist_p, "%s (Nickname regained by services)",
						me.name);
			sendto_realops_snomask(SNO_SKILL, L_ALL,
					"Nick collision due to services forced nick change on %s",
					parv[2]);
		}

		rb_snprintf(buf, sizeof(buf), "Killed (%s (Nickname regained by services))",
			me.name);
		exit_client(NULL, exist_p, &me, buf);
	}

doit:
	newts = atol(parv[3]);

	/* timestamp is older than 15mins, ignore it */
	if(newts < (rb_current_time() - 900))
		newts = rb_current_time() - 900;

	target_p->tsinfo = newts;

	monitor_signoff(target_p);

	invalidate_bancache_user(target_p);

	sendto_realops_snomask(SNO_NCHANGE, L_ALL,
			"Nick change: From %s to %s [%s@%s]",
			target_p->name, parv[2], target_p->username,
			target_p->host);

	sendto_common_channels_local(target_p, NOCAPS, ":%s!%s@%s NICK :%s",
				target_p->name, target_p->username,
				target_p->host, parv[2]);

	add_history(target_p, 1);
	sendto_server(NULL, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld",
			use_id(target_p), parv[2], (long) target_p->tsinfo);

	del_from_client_hash(target_p->name, target_p);
	rb_strlcpy(target_p->name, parv[2], NICKLEN);
	add_to_client_hash(target_p->name, target_p);

	monitor_signon(target_p);

	del_all_accepts(target_p);

	rb_snprintf(note, NICKLEN + 10, "Nick: %s", target_p->name);
	rb_note(target_p->localClient->F, note);
	return 0;
}

/*
** me_nickdelay
**      parv[1] = duration in seconds (0 to remove)
**      parv[2] = nick
*/
static int
me_nickdelay(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	int duration;
	struct nd_entry *nd;

	if(!(source_p->flags & FLAGS_SERVICE))
		return 0;

	duration = atoi(parv[1]);
	if (duration <= 0)
	{
		nd = irc_dictionary_retrieve(nd_dict, parv[2]);
		if (nd != NULL)
			free_nd_entry(nd);
	}
	else
	{
		if (duration > 86400)
			duration = 86400;
		add_nd_entry(parv[2]);
		nd = irc_dictionary_retrieve(nd_dict, parv[2]);
		if (nd != NULL)
			nd->expire = rb_current_time() + duration;
	}

	return 0;
}

static void
h_svc_server_introduced(hook_data_client *hdata)
{
	rb_dlink_node *ptr;

	RB_DLINK_FOREACH(ptr, service_list.head)
	{
		if(!irccmp((const char *) ptr->data, hdata->target->name))
		{
			hdata->target->flags |= FLAGS_SERVICE;
			return;
		}
	}
}

static void
h_svc_whois(hook_data_client *data)
{
	char *p = data->target->user->suser;
	if(!EmptyString(p))
	{
		/* Try to strip off any leading digits as this may be used to
		 * store both an ID number and an account name in one field.
		 * If only digits are present, leave as is.
		 */
		while(IsDigit(*p))
			p++;
		if(*p == '\0')
			p = data->target->user->suser;

		sendto_one_numeric(data->client, RPL_WHOISLOGGEDIN,
				form_str(RPL_WHOISLOGGEDIN),
				data->target->name, p);
	}
}

static void
h_svc_stats(hook_data_int *data)
{
	char statchar = (char) data->arg2;
	rb_dlink_node *ptr;

	if (statchar == 'U' && IsOper(data->client))
	{
		RB_DLINK_FOREACH(ptr, service_list.head)
		{
			sendto_one_numeric(data->client, RPL_STATSULINE,
						form_str(RPL_STATSULINE),
						(const char *)ptr->data, "*", "*", "s");
		}
	}
}
Commit	Line	Data
212380e3 AC	1	/* modules/m_services.c
	2	* Copyright (C) 2005 Lee Hardy <lee -at- leeh.co.uk>
	3	* Copyright (C) 2005 ircd-ratbox development team
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions are
	7	* met:
	8	*
	9	* 1.Redistributions of source code must retain the above copyright notice,
	10	* this list of conditions and the following disclaimer.
	11	* 2.Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	* 3.The name of the author may not be used to endorse or promote products
	15	* derived from this software without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	19	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	20	* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
	21	* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	22	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	23	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	25	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	26	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	27	* POSSIBILITY OF SUCH DAMAGE.
	28	*
	29	* $Id: m_services.c 1907 2006-08-29 19:18:15Z jilles $
	30	*/
	31
	32	#include "stdinc.h"
	33
212380e3 AC	34	#include "send.h"
	35	#include "channel.h"
	36	#include "client.h"
	37	#include "common.h"
	38	#include "config.h"
	39	#include "ircd.h"
	40	#include "numeric.h"
212380e3 AC	41	#include "s_conf.h"
	42	#include "s_newconf.h"
	43	#include "s_serv.h"
	44	#include "hash.h"
	45	#include "msg.h"
	46	#include "parse.h"
	47	#include "modules.h"
212380e3 AC	48	#include "whowas.h"
	49	#include "monitor.h"
	50
	51	static int me_su(struct Client , struct Client , int, const char **);
	52	static int me_login(struct Client , struct Client , int, const char **);
	53	static int me_rsfnc(struct Client , struct Client , int, const char **);
	54	static int me_nickdelay(struct Client , struct Client , int, const char **);
	55
	56	static void h_svc_server_introduced(hook_data_client *);
	57	static void h_svc_whois(hook_data_client *);
	58	static void h_svc_stats(hook_data_int *);
	59
	60	struct Message su_msgtab = {
	61	"SU", 0, 0, 0, MFLG_SLOW,
	62	{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_su, 2}, mg_ignore}
	63	};
	64	struct Message login_msgtab = {
	65	"LOGIN", 0, 0, 0, MFLG_SLOW,
	66	{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_login, 2}, mg_ignore}
	67	};
	68	struct Message rsfnc_msgtab = {
	69	"RSFNC", 0, 0, 0, MFLG_SLOW,
	70	{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_rsfnc, 4}, mg_ignore}
	71	};
	72	struct Message nickdelay_msgtab = {
	73	"NICKDELAY", 0, 0, 0, MFLG_SLOW,
	74	{mg_unreg, mg_ignore, mg_ignore, mg_ignore, {me_nickdelay, 3}, mg_ignore}
	75	};
	76
	77	mapi_clist_av1 services_clist[] = {
	78	&su_msgtab, &login_msgtab, &rsfnc_msgtab, &nickdelay_msgtab, NULL
	79	};
	80	mapi_hfn_list_av1 services_hfnlist[] = {
	81	{ "doing_stats", (hookfn) h_svc_stats },
	82	{ "doing_whois", (hookfn) h_svc_whois },
	83	{ "doing_whois_global", (hookfn) h_svc_whois },
	84	{ "server_introduced", (hookfn) h_svc_server_introduced },
	85	{ NULL, NULL }
	86	};
	87
	88	DECLARE_MODULE_AV1(services, NULL, NULL, services_clist, NULL, services_hfnlist, "$Revision: 1907 $");
	89
	90	static int
	91	me_su(struct Client client_p, struct Client source_p,
	92	int parc, const char *parv[])
	93	{
	94	struct Client *target_p;
	95
	96	if(!(source_p->flags & FLAGS_SERVICE))
	97	return 0;
	98
	99	if((target_p = find_client(parv[1])) == NULL)
	100	return 0;
	101
	102	if(!target_p->user)
	103	return 0;
	104
	105	if(EmptyString(parv[2]))
	106	target_p->user->suser[0] = '\0';
	107	else
f427c8b0	108	rb_strlcpy(target_p->user->suser, parv[2], sizeof(target_p->user->suser));
212380e3	109
261e2f93	110	sendto_common_channels_local_butone(target_p, CLICAP_ACCOUNT_NOTIFY, ":%s!%s@%s ACCOUNT %s",
7a7f86d3 AC	111	target_p->name, target_p->username, target_p->host,
	112	EmptyString(target_p->user->suser) ? "*" : target_p->user->suser);
	113
212380e3 AC	114	invalidate_bancache_user(target_p);
	115
	116	return 0;
	117	}
	118
	119	static int
	120	me_login(struct Client client_p, struct Client source_p,
	121	int parc, const char *parv[])
	122	{
	123	if(!IsPerson(source_p))
	124	return 0;
	125
f427c8b0	126	rb_strlcpy(source_p->user->suser, parv[1], sizeof(source_p->user->suser));
212380e3 AC	127	return 0;
	128	}
	129
	130	static int
	131	clean_nick(const char *nick)
	132	{
	133	int len = 0;
	134
	135	if(EmptyString(nick) \|\| nick == '-' \|\| IsDigit(nick))
	136	return 0;
	137
	138	for(; *nick; nick++)
	139	{
	140	len++;
	141	if(!IsNickChar(*nick))
	142	return 0;
	143	}
	144
	145	if(len >= NICKLEN)
	146	return 0;
	147
	148	return 1;
	149	}
	150
	151	static int
	152	me_rsfnc(struct Client client_p, struct Client source_p,
	153	int parc, const char *parv[])
	154	{
	155	struct Client *target_p;
	156	struct Client *exist_p;
	157	time_t newts, curts;
75d60088	158	char note[NICKLEN + 10];
212380e3 AC	159
	160	if(!(source_p->flags & FLAGS_SERVICE))
	161	return 0;
	162
	163	if((target_p = find_person(parv[1])) == NULL)
	164	return 0;
	165
	166	if(!MyClient(target_p))
	167	return 0;
	168
	169	if(!clean_nick(parv[2]))
	170	return 0;
	171
	172	curts = atol(parv[4]);
	173
	174	/* if tsinfo is different from what it was when services issued the
	175	* RSFNC, then we ignore it. This can happen when a client changes
	176	* nicknames before the RSFNC arrives.. --anfl
	177	*/
	178	if(target_p->tsinfo != curts)
	179	return 0;
	180
	181	if((exist_p = find_named_client(parv[2])))
	182	{
	183	char buf[BUFSIZE];
	184
	185	/* this would be one hell of a race condition to trigger
	186	* this one given the tsinfo check above, but its here for
	187	* safety --anfl
	188	*/
	189	if(target_p == exist_p)
03510227	190	goto doit;
212380e3 AC	191
	192	if(MyClient(exist_p))
	193	sendto_one(exist_p, ":%s KILL %s :(Nickname regained by services)",
	194	me.name, exist_p->name);
	195
	196	exist_p->flags \|= FLAGS_KILLED;
	197	/* Do not send kills to servers for unknowns -- jilles */
	198	if(IsClient(exist_p))
45ed8835	199	{
212380e3 AC	200	kill_client_serv_butone(NULL, exist_p, "%s (Nickname regained by services)",
212380e3 AC	201	me.name);
45ed8835 JT	202	sendto_realops_snomask(SNO_SKILL, L_ALL,
	203	"Nick collision due to services forced nick change on %s",
	204	parv[2]);
	205	}
212380e3	206
c2f73e5d	207	rb_snprintf(buf, sizeof(buf), "Killed (%s (Nickname regained by services))",
212380e3 AC	208	me.name);
	209	exit_client(NULL, exist_p, &me, buf);
	210	}
	211
03510227	212	doit:
212380e3 AC	213	newts = atol(parv[3]);
	214
	215	/* timestamp is older than 15mins, ignore it */
e3354945 VY	216	if(newts < (rb_current_time() - 900))
e3354945 VY	217	newts = rb_current_time() - 900;
212380e3 AC	218
	219	target_p->tsinfo = newts;
	220
	221	monitor_signoff(target_p);
	222
	223	invalidate_bancache_user(target_p);
	224
	225	sendto_realops_snomask(SNO_NCHANGE, L_ALL,
	226	"Nick change: From %s to %s [%s@%s]",
	227	target_p->name, parv[2], target_p->username,
	228	target_p->host);
	229
7a948bda	230	sendto_common_channels_local(target_p, NOCAPS, ":%s!%s@%s NICK :%s",
212380e3 AC	231	target_p->name, target_p->username,
	232	target_p->host, parv[2]);
	233
	234	add_history(target_p, 1);
	235	sendto_server(NULL, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld",
	236	use_id(target_p), parv[2], (long) target_p->tsinfo);
212380e3 AC	237
212380e3 AC	238	del_from_client_hash(target_p->name, target_p);
e2606551	239	rb_strlcpy(target_p->name, parv[2], NICKLEN);
212380e3 AC	240	add_to_client_hash(target_p->name, target_p);
	241
	242	monitor_signon(target_p);
	243
	244	del_all_accepts(target_p);
	245
75d60088 AC	246	rb_snprintf(note, NICKLEN + 10, "Nick: %s", target_p->name);
75d60088 AC	247	rb_note(target_p->localClient->F, note);
212380e3 AC	248	return 0;
	249	}
	250
	251	/*
	252	** me_nickdelay
212380e3 AC	253	** parv[1] = duration in seconds (0 to remove)
	254	** parv[2] = nick
	255	*/
	256	static int
	257	me_nickdelay(struct Client client_p, struct Client source_p, int parc, const char *parv[])
	258	{
	259	int duration;
	260	struct nd_entry *nd;
	261
	262	if(!(source_p->flags & FLAGS_SERVICE))
	263	return 0;
	264
	265	duration = atoi(parv[1]);
	266	if (duration <= 0)
	267	{
b37021a4	268	nd = irc_dictionary_retrieve(nd_dict, parv[2]);
212380e3 AC	269	if (nd != NULL)
	270	free_nd_entry(nd);
	271	}
	272	else
	273	{
	274	if (duration > 86400)
	275	duration = 86400;
	276	add_nd_entry(parv[2]);
b37021a4	277	nd = irc_dictionary_retrieve(nd_dict, parv[2]);
212380e3	278	if (nd != NULL)
e3354945	279	nd->expire = rb_current_time() + duration;
212380e3 AC	280	}
	281
	282	return 0;
	283	}
	284
	285	static void
	286	h_svc_server_introduced(hook_data_client *hdata)
	287	{
5b96d9a6	288	rb_dlink_node *ptr;
212380e3	289
5b96d9a6	290	RB_DLINK_FOREACH(ptr, service_list.head)
212380e3 AC	291	{
	292	if(!irccmp((const char *) ptr->data, hdata->target->name))
	293	{
	294	hdata->target->flags \|= FLAGS_SERVICE;
	295	return;
	296	}
	297	}
	298	}
	299
	300	static void
	301	h_svc_whois(hook_data_client *data)
	302	{
	303	char *p = data->target->user->suser;
	304	if(!EmptyString(p))
	305	{
	306	/* Try to strip off any leading digits as this may be used to
	307	* store both an ID number and an account name in one field.
	308	* If only digits are present, leave as is.
	309	*/
	310	while(IsDigit(*p))
	311	p++;
	312	if(*p == '\0')
	313	p = data->target->user->suser;
	314
5b383ce0 JT	315	sendto_one_numeric(data->client, RPL_WHOISLOGGEDIN,
5b383ce0 JT	316	form_str(RPL_WHOISLOGGEDIN),
212380e3 AC	317	data->target->name, p);
	318	}
	319	}
	320
	321	static void
	322	h_svc_stats(hook_data_int *data)
	323	{
	324	char statchar = (char) data->arg2;
5b96d9a6	325	rb_dlink_node *ptr;
212380e3 AC	326
	327	if (statchar == 'U' && IsOper(data->client))
	328	{
5b96d9a6	329	RB_DLINK_FOREACH(ptr, service_list.head)
212380e3 AC	330	{
	331	sendto_one_numeric(data->client, RPL_STATSULINE,
	332	form_str(RPL_STATSULINE),
0cce01d3	333	(const char )ptr->data, "", "*", "s");
212380e3 AC	334	}
	335	}
	336	}