[solanum.git] / ircd / blacklist.c

/*
 * charybdis: A slightly useful ircd.
 * blacklist.c: Manages DNS blacklist entries and lookups
 *
 * Copyright (C) 2006-2011 charybdis 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 "client.h"
#include "dns.h"
#include "numeric.h"
#include "reject.h"
#include "s_conf.h"
#include "s_user.h"
#include "blacklist.h"
#include "send.h"

rb_dlink_list blacklist_list = { NULL, NULL, 0 };

/* private interfaces */
static struct Blacklist *find_blacklist(char *name)
{
	rb_dlink_node *nptr;

	RB_DLINK_FOREACH(nptr, blacklist_list.head)
	{
		struct Blacklist *blptr = (struct Blacklist *) nptr->data;

		if (!irccmp(blptr->host, name))
			return blptr;
	}

	return NULL;
}

static inline int blacklist_check_reply(struct BlacklistClient *blcptr, const char *ipaddr)
{
	struct Blacklist *blptr = blcptr->blacklist;
	const char *lastoctet;
	rb_dlink_node *ptr;

	/* No filters and entry found - thus positive match */
	if (!rb_dlink_list_length(&blptr->filters))
		return 1;

	/* Below will prolly have to change too if the above changes */
	if ((lastoctet = strrchr(ipaddr, '.')) == NULL || *(++lastoctet) == '\0')
		goto blwarn;

	RB_DLINK_FOREACH(ptr, blcptr->blacklist->filters.head)
	{
		struct BlacklistFilter *filter = ptr->data;
		const char *cmpstr;

		if (filter->type == BLACKLIST_FILTER_ALL)
			cmpstr = ipaddr;
		else if (filter->type == BLACKLIST_FILTER_LAST)
			cmpstr = lastoctet;
		else
		{
			sendto_realops_snomask(SNO_GENERAL, L_ALL,
					"blacklist_check_reply(): Unknown filtertype (BUG!)");
			continue;
		}

		if (strcmp(cmpstr, filter->filterstr) == 0)
			/* Match! */
			return 1;
	}

	return 0;
blwarn:
	if (blcptr->blacklist->lastwarning + 3600 < rb_current_time())
	{
		sendto_realops_snomask(SNO_GENERAL, L_ALL,
				"Garbage reply from blacklist %s",
				blcptr->blacklist->host);
		blcptr->blacklist->lastwarning = rb_current_time();
	}
	return 0;
}

static void blacklist_dns_callback(const char *result, int status, int aftype, void *vptr)
{
	struct BlacklistClient *blcptr = (struct BlacklistClient *) vptr;
	int listed = 0;

	if (blcptr == NULL || blcptr->client_p == NULL)
		return;

	if (blcptr->client_p->preClient == NULL)
	{
		sendto_realops_snomask(SNO_GENERAL, L_ALL,
				"blacklist_dns_callback(): blcptr->client_p->preClient (%s) is NULL", get_client_name(blcptr->client_p, HIDE_IP));
		rb_free(blcptr);
		return;
	}

	if (result != NULL && status)
	{
		if (blacklist_check_reply(blcptr, result))
			listed = TRUE;
	}

	/* they have a blacklist entry for this client */
	if (listed && blcptr->client_p->preClient->dnsbl_listed == NULL)
	{
		blcptr->client_p->preClient->dnsbl_listed = blcptr->blacklist;
		/* reference to blacklist moves from blcptr to client_p->preClient... */
	}
	else
		unref_blacklist(blcptr->blacklist);

	rb_dlinkDelete(&blcptr->node, &blcptr->client_p->preClient->dnsbl_queries);

	/* yes, it can probably happen... */
	if (rb_dlink_list_length(&blcptr->client_p->preClient->dnsbl_queries) == 0 && blcptr->client_p->flags & FLAGS_SENTUSER && !EmptyString(blcptr->client_p->name))
		register_local_user(blcptr->client_p, blcptr->client_p);

	rb_free(blcptr);
}

static void initiate_blacklist_dnsquery(struct Blacklist *blptr, struct Client *client_p)
{
	struct BlacklistClient *blcptr = rb_malloc(sizeof(struct BlacklistClient));
	char buf[IRCD_RES_HOSTLEN + 1];
	uint8_t *ip;

	blcptr->blacklist = blptr;
	blcptr->client_p = client_p;

	if ((client_p->localClient->ip.ss_family == AF_INET) && blptr->ipv4)
	{
		ip = (uint8_t *)&((struct sockaddr_in *)&client_p->localClient->ip)->sin_addr.s_addr;

		/* becomes 2.0.0.127.torbl.ahbl.org or whatever */
		rb_snprintf(buf, sizeof buf, "%d.%d.%d.%d.%s",
			    (unsigned int) ip[3],
			    (unsigned int) ip[2],
			    (unsigned int) ip[1],
			    (unsigned int) ip[0],
			    blptr->host);
	}
	/* IPv6 is supported now. --Elizabeth */
	else if ((client_p->localClient->ip.ss_family == AF_INET6) && blptr->ipv6)
	{
		/* Breaks it into ip[0] = 0x00, ip[1] = 0x00... ip[16] = 0x01 for localhost
		 * I wish there was a uint4_t for C, this would make the below cleaner, but... */
		ip = (uint8_t *)&((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_addr.s6_addr;
		char *bufptr = buf;
		int i;

		/* The below will give us something like
		 * 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.foobl.invalid
		 */

		/* Going backwards */
		for (i = 15; i >= 0; i--)
		{
			/* Get upper and lower nibbles (yes this works fine on
			 * both big and little endian) */
			uint8_t hi = (ip[i] >> 4) & 0x0F;
			uint8_t lo = ip[i] & 0x0F;

			/* One part... (why 5? rb_snprintf adds \0) */
			rb_snprintf(bufptr, 5, "%1x.%1x.",
				    (unsigned int) lo, /* Remember, backwards */
				    (unsigned int) hi);

			/* Lurch forward to next position */
			bufptr += 4;
		}

		/* Tack host on */
		strcpy(bufptr, blptr->host);
	}
	/* This shouldn't happen... */
	else
		return;

	blcptr->dns_id = lookup_hostname(buf, AF_INET, blacklist_dns_callback, blcptr);

	rb_dlinkAdd(blcptr, &blcptr->node, &client_p->preClient->dnsbl_queries);
	blptr->refcount++;
}

/* public interfaces */
struct Blacklist *new_blacklist(char *name, char *reject_reason, int ipv4, int ipv6, rb_dlink_list *filters)
{
	struct Blacklist *blptr;

	if (name == NULL || reject_reason == NULL)
		return NULL;

	blptr = find_blacklist(name);
	if (blptr == NULL)
	{
		blptr = rb_malloc(sizeof(struct Blacklist));
		rb_dlinkAddAlloc(blptr, &blacklist_list);
	}
	else
		blptr->status &= ~CONF_ILLEGAL;

	rb_strlcpy(blptr->host, name, IRCD_RES_HOSTLEN + 1);
	rb_strlcpy(blptr->reject_reason, reject_reason, IRCD_BUFSIZE);
	blptr->ipv4 = ipv4;
	blptr->ipv6 = ipv6;

	rb_dlinkMoveList(filters, &blptr->filters);

	blptr->lastwarning = 0;

	return blptr;
}

void unref_blacklist(struct Blacklist *blptr)
{
	rb_dlink_node *ptr, *next_ptr;

	blptr->refcount--;
	if (blptr->status & CONF_ILLEGAL && blptr->refcount <= 0)
	{
		RB_DLINK_FOREACH_SAFE(ptr, next_ptr, blptr->filters.head)
		{
			rb_dlinkDelete(ptr, &blptr->filters);
			rb_free(ptr);
		}

		rb_dlinkFindDestroy(blptr, &blacklist_list);
		rb_free(blptr);
	}
}

void lookup_blacklists(struct Client *client_p)
{
	rb_dlink_node *nptr;

	RB_DLINK_FOREACH(nptr, blacklist_list.head)
	{
		struct Blacklist *blptr = (struct Blacklist *) nptr->data;

		if (!(blptr->status & CONF_ILLEGAL))
			initiate_blacklist_dnsquery(blptr, client_p);
	}
}

void abort_blacklist_queries(struct Client *client_p)
{
	rb_dlink_node *ptr, *next_ptr;
	struct BlacklistClient *blcptr;

	if (client_p->preClient == NULL)
		return;
	RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->preClient->dnsbl_queries.head)
	{
		blcptr = ptr->data;
		rb_dlinkDelete(&blcptr->node, &client_p->preClient->dnsbl_queries);
		unref_blacklist(blcptr->blacklist);
		cancel_lookup(blcptr->dns_id);
		rb_free(blcptr);
	}
}

void destroy_blacklists(void)
{
	rb_dlink_node *ptr, *next_ptr;
	struct Blacklist *blptr;

	RB_DLINK_FOREACH_SAFE(ptr, next_ptr, blacklist_list.head)
	{
		blptr = ptr->data;
		blptr->hits = 0; /* keep it simple and consistent */
		if (blptr->refcount > 0)
			blptr->status |= CONF_ILLEGAL;
		else
		{
			rb_free(ptr->data);
			rb_dlinkDestroy(ptr, &blacklist_list);
		}
	}
}
Commit	Line	Data
212380e3 AC	1	/*
	2	* charybdis: A slightly useful ircd.
	3	* blacklist.c: Manages DNS blacklist entries and lookups
	4	*
0a1e77c2	5	* Copyright (C) 2006-2011 charybdis development team
212380e3 AC	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	*
	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	*
	18	* 3. The name of the author may not be used to endorse or promote products
	19	* derived from this software without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	22	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	23	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	24	* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
	25	* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	26	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	27	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	29	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	30	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	31	* POSSIBILITY OF SUCH DAMAGE.
	32	*
212380e3 AC	33	*/
	34
	35	#include "stdinc.h"
	36	#include "client.h"
1d02144f	37	#include "dns.h"
212380e3 AC	38	#include "numeric.h"
	39	#include "reject.h"
	40	#include "s_conf.h"
	41	#include "s_user.h"
	42	#include "blacklist.h"
77d3d2db	43	#include "send.h"
212380e3	44
b2f0da88	45	rb_dlink_list blacklist_list = { NULL, NULL, 0 };
212380e3 AC	46
	47	/* private interfaces */
	48	static struct Blacklist find_blacklist(char name)
	49	{
b2f0da88	50	rb_dlink_node *nptr;
212380e3	51
b2f0da88	52	RB_DLINK_FOREACH(nptr, blacklist_list.head)
212380e3 AC	53	{
	54	struct Blacklist blptr = (struct Blacklist ) nptr->data;
	55
	56	if (!irccmp(blptr->host, name))
	57	return blptr;
	58	}
	59
	60	return NULL;
	61	}
	62
1d02144f	63	static inline int blacklist_check_reply(struct BlacklistClient blcptr, const char ipaddr)
3c93d380 EM	64	{
3c93d380 EM	65	struct Blacklist *blptr = blcptr->blacklist;
1d02144f	66	const char *lastoctet;
3c93d380 EM	67	rb_dlink_node *ptr;
3c93d380 EM	68
3c93d380 EM	69	/* No filters and entry found - thus positive match */
	70	if (!rb_dlink_list_length(&blptr->filters))
	71	return 1;
	72
3c93d380 EM	73	/* Below will prolly have to change too if the above changes */
	74	if ((lastoctet = strrchr(ipaddr, '.')) == NULL \|\| *(++lastoctet) == '\0')
	75	goto blwarn;
	76
	77	RB_DLINK_FOREACH(ptr, blcptr->blacklist->filters.head)
	78	{
	79	struct BlacklistFilter *filter = ptr->data;
1d02144f	80	const char *cmpstr;
3c93d380 EM	81
	82	if (filter->type == BLACKLIST_FILTER_ALL)
	83	cmpstr = ipaddr;
	84	else if (filter->type == BLACKLIST_FILTER_LAST)
	85	cmpstr = lastoctet;
	86	else
	87	{
	88	sendto_realops_snomask(SNO_GENERAL, L_ALL,
	89	"blacklist_check_reply(): Unknown filtertype (BUG!)");
	90	continue;
	91	}
	92
	93	if (strcmp(cmpstr, filter->filterstr) == 0)
	94	/* Match! */
	95	return 1;
	96	}
	97
	98	return 0;
	99	blwarn:
	100	if (blcptr->blacklist->lastwarning + 3600 < rb_current_time())
	101	{
	102	sendto_realops_snomask(SNO_GENERAL, L_ALL,
	103	"Garbage reply from blacklist %s",
	104	blcptr->blacklist->host);
	105	blcptr->blacklist->lastwarning = rb_current_time();
	106	}
	107	return 0;
	108	}
	109
1d02144f	110	static void blacklist_dns_callback(const char result, int status, int aftype, void vptr)
212380e3 AC	111	{
212380e3 AC	112	struct BlacklistClient blcptr = (struct BlacklistClient ) vptr;
137d856d	113	int listed = 0;
212380e3 AC	114
	115	if (blcptr == NULL \|\| blcptr->client_p == NULL)
	116	return;
	117
	118	if (blcptr->client_p->preClient == NULL)
	119	{
	120	sendto_realops_snomask(SNO_GENERAL, L_ALL,
	121	"blacklist_dns_callback(): blcptr->client_p->preClient (%s) is NULL", get_client_name(blcptr->client_p, HIDE_IP));
637c4932	122	rb_free(blcptr);
212380e3 AC	123	return;
	124	}
	125
1d02144f	126	if (result != NULL && status)
137d856d	127	{
1d02144f	128	if (blacklist_check_reply(blcptr, result))
96274734	129	listed = TRUE;
137d856d JT	130	}
137d856d JT	131
212380e3	132	/* they have a blacklist entry for this client */
137d856d	133	if (listed && blcptr->client_p->preClient->dnsbl_listed == NULL)
212380e3 AC	134	{
	135	blcptr->client_p->preClient->dnsbl_listed = blcptr->blacklist;
	136	/* reference to blacklist moves from blcptr to client_p->preClient... */
	137	}
	138	else
	139	unref_blacklist(blcptr->blacklist);
	140
b2f0da88	141	rb_dlinkDelete(&blcptr->node, &blcptr->client_p->preClient->dnsbl_queries);
212380e3 AC	142
212380e3 AC	143	/* yes, it can probably happen... */
b2f0da88	144	if (rb_dlink_list_length(&blcptr->client_p->preClient->dnsbl_queries) == 0 && blcptr->client_p->flags & FLAGS_SENTUSER && !EmptyString(blcptr->client_p->name))
21251822	145	register_local_user(blcptr->client_p, blcptr->client_p);
212380e3	146
637c4932	147	rb_free(blcptr);
212380e3 AC	148	}
212380e3 AC	149
212380e3 AC	150	static void initiate_blacklist_dnsquery(struct Blacklist blptr, struct Client client_p)
212380e3 AC	151	{
eddc2ab6	152	struct BlacklistClient *blcptr = rb_malloc(sizeof(struct BlacklistClient));
db3efb7a	153	char buf[IRCD_RES_HOSTLEN + 1];
5d21ef50	154	uint8_t *ip;
212380e3 AC	155
	156	blcptr->blacklist = blptr;
	157	blcptr->client_p = client_p;
	158
0a1e77c2 EM	159	if ((client_p->localClient->ip.ss_family == AF_INET) && blptr->ipv4)
	160	{
	161	ip = (uint8_t )&((struct sockaddr_in )&client_p->localClient->ip)->sin_addr.s_addr;
	162
	163	/* becomes 2.0.0.127.torbl.ahbl.org or whatever */
	164	rb_snprintf(buf, sizeof buf, "%d.%d.%d.%d.%s",
	165	(unsigned int) ip[3],
	166	(unsigned int) ip[2],
	167	(unsigned int) ip[1],
	168	(unsigned int) ip[0],
	169	blptr->host);
	170	}
	171	/* IPv6 is supported now. --Elizabeth */
	172	else if ((client_p->localClient->ip.ss_family == AF_INET6) && blptr->ipv6)
	173	{
	174	/* Breaks it into ip[0] = 0x00, ip[1] = 0x00... ip[16] = 0x01 for localhost
	175	* I wish there was a uint4_t for C, this would make the below cleaner, but... */
	176	ip = (uint8_t )&((struct sockaddr_in6 )&client_p->localClient->ip)->sin6_addr.s6_addr;
	177	char *bufptr = buf;
	178	int i;
	179
	180	/* The below will give us something like
	181	* 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.foobl.invalid
	182	*/
	183
	184	/* Going backwards */
	185	for (i = 15; i >= 0; i--)
	186	{
	187	/* Get upper and lower nibbles (yes this works fine on
	188	* both big and little endian) */
	189	uint8_t hi = (ip[i] >> 4) & 0x0F;
	190	uint8_t lo = ip[i] & 0x0F;
	191
	192	/* One part... (why 5? rb_snprintf adds \0) */
	193	rb_snprintf(bufptr, 5, "%1x.%1x.",
	194	(unsigned int) lo, /* Remember, backwards */
	195	(unsigned int) hi);
	196
	197	/* Lurch forward to next position */
	198	bufptr += 4;
	199	}
212380e3	200
0a1e77c2 EM	201	/* Tack host on */
	202	strcpy(bufptr, blptr->host);
	203	}
	204	/* This shouldn't happen... */
	205	else
	206	return;
212380e3	207
1d02144f	208	blcptr->dns_id = lookup_hostname(buf, AF_INET, blacklist_dns_callback, blcptr);
212380e3	209
b2f0da88	210	rb_dlinkAdd(blcptr, &blcptr->node, &client_p->preClient->dnsbl_queries);
212380e3 AC	211	blptr->refcount++;
	212	}
	213
	214	/* public interfaces */
3c93d380	215	struct Blacklist new_blacklist(char name, char reject_reason, int ipv4, int ipv6, rb_dlink_list filters)
212380e3 AC	216	{
	217	struct Blacklist *blptr;
	218
	219	if (name == NULL \|\| reject_reason == NULL)
	220	return NULL;
	221
	222	blptr = find_blacklist(name);
	223	if (blptr == NULL)
	224	{
eddc2ab6	225	blptr = rb_malloc(sizeof(struct Blacklist));
b2f0da88	226	rb_dlinkAddAlloc(blptr, &blacklist_list);
212380e3 AC	227	}
	228	else
	229	blptr->status &= ~CONF_ILLEGAL;
3c93d380	230
db3efb7a	231	rb_strlcpy(blptr->host, name, IRCD_RES_HOSTLEN + 1);
f427c8b0	232	rb_strlcpy(blptr->reject_reason, reject_reason, IRCD_BUFSIZE);
0a1e77c2 EM	233	blptr->ipv4 = ipv4;
0a1e77c2 EM	234	blptr->ipv6 = ipv6;
3c93d380 EM	235
	236	rb_dlinkMoveList(filters, &blptr->filters);
	237
96274734	238	blptr->lastwarning = 0;
212380e3 AC	239
	240	return blptr;
	241	}
	242
	243	void unref_blacklist(struct Blacklist *blptr)
	244	{
3c93d380 EM	245	rb_dlink_node ptr, next_ptr;
3c93d380 EM	246
212380e3 AC	247	blptr->refcount--;
	248	if (blptr->status & CONF_ILLEGAL && blptr->refcount <= 0)
	249	{
3c93d380 EM	250	RB_DLINK_FOREACH_SAFE(ptr, next_ptr, blptr->filters.head)
3c93d380 EM	251	{
3c93d380	252	rb_dlinkDelete(ptr, &blptr->filters);
b84e58f9	253	rb_free(ptr);
3c93d380 EM	254	}
3c93d380 EM	255
b2f0da88	256	rb_dlinkFindDestroy(blptr, &blacklist_list);
637c4932	257	rb_free(blptr);
212380e3 AC	258	}
	259	}
	260
	261	void lookup_blacklists(struct Client *client_p)
	262	{
b2f0da88	263	rb_dlink_node *nptr;
212380e3	264
b2f0da88	265	RB_DLINK_FOREACH(nptr, blacklist_list.head)
212380e3 AC	266	{
	267	struct Blacklist blptr = (struct Blacklist ) nptr->data;
	268
	269	if (!(blptr->status & CONF_ILLEGAL))
	270	initiate_blacklist_dnsquery(blptr, client_p);
	271	}
	272	}
	273
	274	void abort_blacklist_queries(struct Client *client_p)
	275	{
637c4932	276	rb_dlink_node ptr, next_ptr;
212380e3 AC	277	struct BlacklistClient *blcptr;
	278
	279	if (client_p->preClient == NULL)
	280	return;
637c4932	281	RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->preClient->dnsbl_queries.head)
212380e3 AC	282	{
212380e3 AC	283	blcptr = ptr->data;
b2f0da88	284	rb_dlinkDelete(&blcptr->node, &client_p->preClient->dnsbl_queries);
212380e3	285	unref_blacklist(blcptr->blacklist);
1d02144f	286	cancel_lookup(blcptr->dns_id);
637c4932	287	rb_free(blcptr);
212380e3 AC	288	}
	289	}
	290
	291	void destroy_blacklists(void)
	292	{
637c4932	293	rb_dlink_node ptr, next_ptr;
212380e3 AC	294	struct Blacklist *blptr;
212380e3 AC	295
637c4932	296	RB_DLINK_FOREACH_SAFE(ptr, next_ptr, blacklist_list.head)
212380e3 AC	297	{
	298	blptr = ptr->data;
	299	blptr->hits = 0; /* keep it simple and consistent */
	300	if (blptr->refcount > 0)
	301	blptr->status \|= CONF_ILLEGAL;
	302	else
	303	{
637c4932	304	rb_free(ptr->data);
b2f0da88	305	rb_dlinkDestroy(ptr, &blacklist_list);
212380e3 AC	306	}
	307	}
	308	}