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

/*
 * charybdis: An advanced ircd.
 * m_ban.c: Propagates network bans across servers.
 * 
 *  Copyright (C) 2010 Jilles Tjoelker
 *
 * 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.
 *
 * 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 "send.h"
#include "client.h"
#include "common.h"
#include "config.h"
#include "ircd.h"
#include "match.h"
#include "s_conf.h"
#include "msg.h"
#include "modules.h"
#include "hash.h"
#include "s_serv.h"
#include "operhash.h"
#include "reject.h"
#include "hostmask.h"

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

struct Message ban_msgtab = {
	"BAN", 0, 0, 0, MFLG_SLOW,
	{mg_unreg, mg_ignore, {ms_ban, 9}, {ms_ban, 9}, mg_ignore, mg_ignore}
};

mapi_clist_av1 ban_clist[] =  { &ban_msgtab, NULL };
DECLARE_MODULE_AV1(ban, NULL, NULL, ban_clist, NULL, NULL, "$Revision: 1349 $");

/* ms_ban()
 *
 * parv[1] - type
 * parv[2] - username mask or *
 * parv[3] - hostname mask
 * parv[4] - creation TS
 * parv[5] - duration (relative to creation)
 * parv[6] - lifetime (relative to creation)
 * parv[7] - oper or *
 * parv[8] - reason (possibly with |operreason)
 */
static int
ms_ban(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	rb_dlink_node *ptr;
	struct ConfItem *aconf;
	unsigned int ntype;
	const char *oper, *stype;
	time_t created, hold, lifetime;
	char *p;
	int act;

	if (strlen(parv[1]) != 1)
	{
		sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
				"Unknown BAN type %s from %s",
				parv[1], source_p->name);
		return 0;
	}
	switch (parv[1][0])
	{
		case 'K':
			ntype = CONF_KILL;
			stype = "K-Line";
			break;
		default:
			sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
					"Unknown BAN type %s from %s",
					parv[1], source_p->name);
			return 0;
	}
	created = atol(parv[4]);
	hold = created + atoi(parv[5]);
	lifetime = created + atoi(parv[6]);
	if (!strcmp(parv[7], "*"))
		oper = IsServer(source_p) ? source_p->name : get_oper_name(source_p);
	else
		oper = parv[7];
	ptr = find_prop_ban(ntype, parv[2], parv[3]);
	if (ptr != NULL)
	{
		aconf = ptr->data;
		if (aconf->created >= created)
		{
			if (IsPerson(source_p))
				sendto_one_notice(source_p,
						":Your %s [%s%s%s] has been superseded",
						stype,
						aconf->user ? aconf->user : "",
						aconf->user ? "@" : "",
						aconf->host);
			return 0;
		}
		act = !(aconf->status & CONF_ILLEGAL) || (hold != created &&
				hold > rb_current_time());
		if (lifetime > aconf->lifetime)
			aconf->lifetime = lifetime;
		/* already expired, hmm */
		if (aconf->lifetime <= rb_current_time())
			return 0;
		deactivate_conf(aconf, ptr);
		rb_free(aconf->user);
		aconf->user = NULL;
		rb_free(aconf->host);
		aconf->host = NULL;
		operhash_delete(aconf->info.oper);
		aconf->info.oper = NULL;
		rb_free(aconf->passwd);
		aconf->passwd = NULL;
		rb_free(aconf->spasswd);
		aconf->spasswd = NULL;
	}
	else
	{
		aconf = make_conf();
		aconf->status = CONF_ILLEGAL | ntype;
		aconf->lifetime = lifetime;
		rb_dlinkAddAlloc(aconf, &prop_bans);
		act = hold != created && hold > rb_current_time();
	}
	aconf->flags &= ~CONF_FLAGS_MYOPER;
	aconf->flags |= CONF_FLAGS_TEMPORARY;
	aconf->user = ntype == CONF_KILL ? rb_strdup(parv[2]) : NULL;
	aconf->host = rb_strdup(parv[3]);
	aconf->info.oper = operhash_add(oper);
	aconf->created = created;
	aconf->hold = hold;
	p = strchr(parv[parc - 1], '|');
	if (p == NULL)
		aconf->passwd = rb_strdup(parv[parc - 1]);
	else
	{
		aconf->passwd = rb_strndup(parv[parc - 1], p - parv[parc - 1] + 1);
		aconf->spasswd = rb_strdup(p + 1);
	}
	if (act && hold != created)
	{
		/* Keep the notices in sync with modules/m_kline.c etc. */
		sendto_realops_snomask(SNO_GENERAL, L_ALL,
				       "%s added global %d min. %s%s%s for [%s%s%s] [%s]",
				       IsServer(source_p) ? source_p->name : get_oper_name(source_p),
				       (hold - rb_current_time()) / 60,
				       stype,
				       strcmp(parv[7], "*") ? " from " : "",
				       strcmp(parv[7], "*") ? parv[7] : "",
				       aconf->user ? aconf->user : "",
				       aconf->user ? "@" : "",
				       aconf->host,
				       parv[parc - 1]);
		ilog(L_KLINE, "%s %s %d %s %s %s", parv[1],
				IsServer(source_p) ? source_p->name : get_oper_name(source_p),
				(hold - rb_current_time()) / 60,
				aconf->user, aconf->host,
				parv[parc - 1]);
		aconf->status &= ~CONF_ILLEGAL;
	}
	else if (act)
	{
		sendto_realops_snomask(SNO_GENERAL, L_ALL,
				"%s has removed the global %s for: [%s%s%s]%s%s",
				IsServer(source_p) ? source_p->name : get_oper_name(source_p),
				stype,
				aconf->user ? aconf->user : "",
				aconf->user ? "@" : "",
				aconf->host,
				strcmp(parv[7], "*") ? " on behalf of " : "",
				strcmp(parv[7], "*") ? parv[7] : "");
		ilog(L_KLINE, "U%s %s %s %s", parv[1],
				IsServer(source_p) ? source_p->name : get_oper_name(source_p),
				aconf->user, aconf->host);
	}
	switch (ntype)
	{
		case CONF_KILL:
			if (aconf->status & CONF_ILLEGAL)
				remove_reject_mask(aconf->user, aconf->host);
			else
			{
				add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf);
				if(ConfigFileEntry.kline_delay ||
						(IsServer(source_p) &&
						 !HasSentEob(source_p)))
				{
					if(kline_queued == 0)
					{
						rb_event_addonce("check_klines", check_klines_event, NULL,
								 ConfigFileEntry.kline_delay);
						kline_queued = 1;
					}
				}
				else
					check_klines();
			}
			break;
	}
	sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS,
			":%s BAN %s %s %s %s %s %s %s :%s",
			source_p->id,
			parv[1],
			parv[2],
			parv[3],
			parv[4],
			parv[5],
			parv[6],
			parv[7],
			parv[parc - 1]);
	return 0;
}
Commit	Line	Data
431a1a27 JT	1	/*
	2	* charybdis: An advanced ircd.
	3	* m_ban.c: Propagates network bans across servers.
	4	*
	5	* Copyright (C) 2010 Jilles Tjoelker
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions are
	9	* met:
	10	*
	11	* 1.Redistributions of source code must retain the above copyright notice,
	12	* this list of conditions and the following disclaimer.
	13	* 2.Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	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
	30	#include "stdinc.h"
	31	#include "send.h"
	32	#include "client.h"
	33	#include "common.h"
	34	#include "config.h"
	35	#include "ircd.h"
	36	#include "match.h"
	37	#include "s_conf.h"
	38	#include "msg.h"
	39	#include "modules.h"
	40	#include "hash.h"
	41	#include "s_serv.h"
	42	#include "operhash.h"
	43	#include "reject.h"
	44	#include "hostmask.h"
	45
	46	static int ms_ban(struct Client client_p, struct Client source_p, int parc, const char *parv[]);
	47
	48	struct Message ban_msgtab = {
	49	"BAN", 0, 0, 0, MFLG_SLOW,
cedb7d05	50	{mg_unreg, mg_ignore, {ms_ban, 9}, {ms_ban, 9}, mg_ignore, mg_ignore}
431a1a27 JT	51	};
	52
	53	mapi_clist_av1 ban_clist[] = { &ban_msgtab, NULL };
	54	DECLARE_MODULE_AV1(ban, NULL, NULL, ban_clist, NULL, NULL, "$Revision: 1349 $");
	55
	56	/* ms_ban()
	57	*
cedb7d05 JT	58	* parv[1] - type
	59	* parv[2] - username mask or *
	60	* parv[3] - hostname mask
	61	* parv[4] - creation TS
	62	* parv[5] - duration (relative to creation)
	63	* parv[6] - lifetime (relative to creation)
	64	* parv[7] - oper or *
	65	* parv[8] - reason (possibly with \|operreason)
431a1a27 JT	66	*/
	67	static int
	68	ms_ban(struct Client client_p, struct Client source_p, int parc, const char *parv[])
	69	{
	70	rb_dlink_node *ptr;
	71	struct ConfItem *aconf;
	72	unsigned int ntype;
	73	const char oper, stype;
	74	time_t created, hold, lifetime;
	75	char *p;
	76	int act;
	77
cedb7d05	78	if (strlen(parv[1]) != 1)
431a1a27 JT	79	{
	80	sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
	81	"Unknown BAN type %s from %s",
cedb7d05	82	parv[1], source_p->name);
431a1a27 JT	83	return 0;
431a1a27 JT	84	}
cedb7d05	85	switch (parv[1][0])
431a1a27 JT	86	{
	87	case 'K':
	88	ntype = CONF_KILL;
	89	stype = "K-Line";
	90	break;
	91	default:
	92	sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
	93	"Unknown BAN type %s from %s",
cedb7d05	94	parv[1], source_p->name);
431a1a27 JT	95	return 0;
431a1a27 JT	96	}
cedb7d05 JT	97	created = atol(parv[4]);
	98	hold = created + atoi(parv[5]);
	99	lifetime = created + atoi(parv[6]);
	100	if (!strcmp(parv[7], "*"))
431a1a27 JT	101	oper = IsServer(source_p) ? source_p->name : get_oper_name(source_p);
431a1a27 JT	102	else
cedb7d05 JT	103	oper = parv[7];
cedb7d05 JT	104	ptr = find_prop_ban(ntype, parv[2], parv[3]);
431a1a27 JT	105	if (ptr != NULL)
	106	{
	107	aconf = ptr->data;
	108	if (aconf->created >= created)
	109	{
	110	if (IsPerson(source_p))
	111	sendto_one_notice(source_p,
	112	":Your %s [%s%s%s] has been superseded",
	113	stype,
	114	aconf->user ? aconf->user : "",
	115	aconf->user ? "@" : "",
	116	aconf->host);
	117	return 0;
	118	}
cedb7d05 JT	119	act = !(aconf->status & CONF_ILLEGAL) \|\| (hold != created &&
cedb7d05 JT	120	hold > rb_current_time());
431a1a27 JT	121	if (lifetime > aconf->lifetime)
	122	aconf->lifetime = lifetime;
	123	/* already expired, hmm */
	124	if (aconf->lifetime <= rb_current_time())
	125	return 0;
	126	deactivate_conf(aconf, ptr);
	127	rb_free(aconf->user);
	128	aconf->user = NULL;
	129	rb_free(aconf->host);
	130	aconf->host = NULL;
	131	operhash_delete(aconf->info.oper);
	132	aconf->info.oper = NULL;
	133	rb_free(aconf->passwd);
	134	aconf->passwd = NULL;
	135	rb_free(aconf->spasswd);
	136	aconf->spasswd = NULL;
	137	}
	138	else
	139	{
	140	aconf = make_conf();
	141	aconf->status = CONF_ILLEGAL \| ntype;
	142	aconf->lifetime = lifetime;
	143	rb_dlinkAddAlloc(aconf, &prop_bans);
cedb7d05	144	act = hold != created && hold > rb_current_time();
431a1a27 JT	145	}
	146	aconf->flags &= ~CONF_FLAGS_MYOPER;
	147	aconf->flags \|= CONF_FLAGS_TEMPORARY;
cedb7d05 JT	148	aconf->user = ntype == CONF_KILL ? rb_strdup(parv[2]) : NULL;
cedb7d05 JT	149	aconf->host = rb_strdup(parv[3]);
431a1a27 JT	150	aconf->info.oper = operhash_add(oper);
	151	aconf->created = created;
	152	aconf->hold = hold;
	153	p = strchr(parv[parc - 1], '\|');
	154	if (p == NULL)
	155	aconf->passwd = rb_strdup(parv[parc - 1]);
	156	else
	157	{
	158	aconf->passwd = rb_strndup(parv[parc - 1], p - parv[parc - 1] + 1);
	159	aconf->spasswd = rb_strdup(p + 1);
	160	}
cedb7d05	161	if (act && hold != created)
431a1a27 JT	162	{
	163	/* Keep the notices in sync with modules/m_kline.c etc. */
	164	sendto_realops_snomask(SNO_GENERAL, L_ALL,
	165	"%s added global %d min. %s%s%s for [%s%s%s] [%s]",
	166	IsServer(source_p) ? source_p->name : get_oper_name(source_p),
	167	(hold - rb_current_time()) / 60,
	168	stype,
cedb7d05 JT	169	strcmp(parv[7], "*") ? " from " : "",
cedb7d05 JT	170	strcmp(parv[7], "*") ? parv[7] : "",
431a1a27 JT	171	aconf->user ? aconf->user : "",
	172	aconf->user ? "@" : "",
	173	aconf->host,
	174	parv[parc - 1]);
cedb7d05	175	ilog(L_KLINE, "%s %s %d %s %s %s", parv[1],
431a1a27 JT	176	IsServer(source_p) ? source_p->name : get_oper_name(source_p),
	177	(hold - rb_current_time()) / 60,
	178	aconf->user, aconf->host,
	179	parv[parc - 1]);
cedb7d05	180	aconf->status &= ~CONF_ILLEGAL;
431a1a27 JT	181	}
	182	else if (act)
	183	{
	184	sendto_realops_snomask(SNO_GENERAL, L_ALL,
	185	"%s has removed the global %s for: [%s%s%s]%s%s",
	186	IsServer(source_p) ? source_p->name : get_oper_name(source_p),
	187	stype,
	188	aconf->user ? aconf->user : "",
	189	aconf->user ? "@" : "",
	190	aconf->host,
cedb7d05 JT	191	strcmp(parv[7], "*") ? " on behalf of " : "",
	192	strcmp(parv[7], "*") ? parv[7] : "");
	193	ilog(L_KLINE, "U%s %s %s %s", parv[1],
431a1a27 JT	194	IsServer(source_p) ? source_p->name : get_oper_name(source_p),
	195	aconf->user, aconf->host);
	196	}
	197	switch (ntype)
	198	{
	199	case CONF_KILL:
	200	if (aconf->status & CONF_ILLEGAL)
	201	remove_reject_mask(aconf->user, aconf->host);
	202	else
	203	{
	204	add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf);
	205	if(ConfigFileEntry.kline_delay \|\|
	206	(IsServer(source_p) &&
	207	!HasSentEob(source_p)))
	208	{
	209	if(kline_queued == 0)
	210	{
	211	rb_event_addonce("check_klines", check_klines_event, NULL,
	212	ConfigFileEntry.kline_delay);
	213	kline_queued = 1;
	214	}
	215	}
	216	else
	217	check_klines();
	218	}
	219	break;
	220	}
	221	sendto_server(NULL, NULL, CAP_BAN\|CAP_TS6, NOCAPS,
cedb7d05	222	":%s BAN %s %s %s %s %s %s %s :%s",
431a1a27 JT	223	source_p->id,
	224	parv[1],
	225	parv[2],
	226	parv[3],
	227	parv[4],
	228	parv[5],
	229	parv[6],
	230	parv[7],
431a1a27 JT	231	parv[parc - 1]);
	232	return 0;
	233	}