[solanum.git] / src / 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 "res.h"
#include "numeric.h"
#include "reject.h"
#include "s_conf.h"
#include "s_user.h"
#include "blacklist.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, struct rb_sockaddr_storage *addr)
{
	struct Blacklist *blptr = blcptr->blacklist;
	char ipaddr[HOSTIPLEN];
	char *lastoctet;
	rb_dlink_node *ptr;

	/* XXX the below two checks might want to change at some point
	 * e.g. if IPv6 blacklists don't use 127.x.y.z or A records anymore
	 * --Elizabeth
	 */
	if (addr->ss_family != AF_INET ||
			memcmp(&((struct sockaddr_in *)addr)->sin_addr, "\177", 1))
		goto blwarn;

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

	rb_inet_ntop_sock((struct sockaddr *)addr, ipaddr, sizeof(ipaddr));

	/* 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;
		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(void *vptr, struct DNSReply *reply)
{
	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 (reply != NULL)
	{
		if (blacklist_check_reply(blcptr, &reply->addr))
			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))
	{
		char buf[USERLEN + 1];
		rb_strlcpy(buf, blcptr->client_p->username, sizeof buf);
		register_local_user(blcptr->client_p, blcptr->client_p, buf);
	}

	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;

	blcptr->dns_query.ptr = blcptr;
	blcptr->dns_query.callback = blacklist_dns_callback;

	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;

	gethost_byname_type(buf, &blcptr->dns_query, T_A);

	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_free(ptr);
			rb_dlinkDelete(ptr, &blptr->filters);
		}

		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);
		delete_resolver_queries(&blcptr->dns_query);
		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"
	37	#include "res.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"
	43
b2f0da88	44	rb_dlink_list blacklist_list = { NULL, NULL, 0 };
212380e3 AC	45
	46	/* private interfaces */
	47	static struct Blacklist find_blacklist(char name)
	48	{
b2f0da88	49	rb_dlink_node *nptr;
212380e3	50
b2f0da88	51	RB_DLINK_FOREACH(nptr, blacklist_list.head)
212380e3 AC	52	{
	53	struct Blacklist blptr = (struct Blacklist ) nptr->data;
	54
	55	if (!irccmp(blptr->host, name))
	56	return blptr;
	57	}
	58
	59	return NULL;
	60	}
	61
3c93d380 EM	62	static inline int blacklist_check_reply(struct BlacklistClient blcptr, struct rb_sockaddr_storage addr)
	63	{
	64	struct Blacklist *blptr = blcptr->blacklist;
	65	char ipaddr[HOSTIPLEN];
	66	char *lastoctet;
	67	rb_dlink_node *ptr;
	68
	69	/* XXX the below two checks might want to change at some point
	70	* e.g. if IPv6 blacklists don't use 127.x.y.z or A records anymore
	71	* --Elizabeth
	72	*/
	73	if (addr->ss_family != AF_INET \|\|
	74	memcmp(&((struct sockaddr_in *)addr)->sin_addr, "\177", 1))
	75	goto blwarn;
	76
	77	/* No filters and entry found - thus positive match */
	78	if (!rb_dlink_list_length(&blptr->filters))
	79	return 1;
	80
	81	rb_inet_ntop_sock((struct sockaddr *)addr, ipaddr, sizeof(ipaddr));
	82
	83	/* Below will prolly have to change too if the above changes */
	84	if ((lastoctet = strrchr(ipaddr, '.')) == NULL \|\| *(++lastoctet) == '\0')
	85	goto blwarn;
	86
	87	RB_DLINK_FOREACH(ptr, blcptr->blacklist->filters.head)
	88	{
	89	struct BlacklistFilter *filter = ptr->data;
	90	char *cmpstr;
	91
	92	if (filter->type == BLACKLIST_FILTER_ALL)
	93	cmpstr = ipaddr;
	94	else if (filter->type == BLACKLIST_FILTER_LAST)
	95	cmpstr = lastoctet;
	96	else
	97	{
	98	sendto_realops_snomask(SNO_GENERAL, L_ALL,
	99	"blacklist_check_reply(): Unknown filtertype (BUG!)");
	100	continue;
	101	}
	102
	103	if (strcmp(cmpstr, filter->filterstr) == 0)
	104	/* Match! */
	105	return 1;
	106	}
	107
	108	return 0;
	109	blwarn:
	110	if (blcptr->blacklist->lastwarning + 3600 < rb_current_time())
	111	{
	112	sendto_realops_snomask(SNO_GENERAL, L_ALL,
	113	"Garbage reply from blacklist %s",
	114	blcptr->blacklist->host);
	115	blcptr->blacklist->lastwarning = rb_current_time();
	116	}
	117	return 0;
	118	}
	119
212380e3 AC	120	static void blacklist_dns_callback(void vptr, struct DNSReply reply)
	121	{
	122	struct BlacklistClient blcptr = (struct BlacklistClient ) vptr;
137d856d	123	int listed = 0;
212380e3 AC	124
	125	if (blcptr == NULL \|\| blcptr->client_p == NULL)
	126	return;
	127
	128	if (blcptr->client_p->preClient == NULL)
	129	{
	130	sendto_realops_snomask(SNO_GENERAL, L_ALL,
	131	"blacklist_dns_callback(): blcptr->client_p->preClient (%s) is NULL", get_client_name(blcptr->client_p, HIDE_IP));
637c4932	132	rb_free(blcptr);
212380e3 AC	133	return;
	134	}
	135
137d856d JT	136	if (reply != NULL)
137d856d JT	137	{
3c93d380	138	if (blacklist_check_reply(blcptr, &reply->addr))
96274734	139	listed = TRUE;
137d856d JT	140	}
137d856d JT	141
212380e3	142	/* they have a blacklist entry for this client */
137d856d	143	if (listed && blcptr->client_p->preClient->dnsbl_listed == NULL)
212380e3 AC	144	{
	145	blcptr->client_p->preClient->dnsbl_listed = blcptr->blacklist;
	146	/* reference to blacklist moves from blcptr to client_p->preClient... */
	147	}
	148	else
	149	unref_blacklist(blcptr->blacklist);
	150
b2f0da88	151	rb_dlinkDelete(&blcptr->node, &blcptr->client_p->preClient->dnsbl_queries);
212380e3 AC	152
212380e3 AC	153	/* yes, it can probably happen... */
b2f0da88	154	if (rb_dlink_list_length(&blcptr->client_p->preClient->dnsbl_queries) == 0 && blcptr->client_p->flags & FLAGS_SENTUSER && !EmptyString(blcptr->client_p->name))
212380e3 AC	155	{
212380e3 AC	156	char buf[USERLEN + 1];
f427c8b0	157	rb_strlcpy(buf, blcptr->client_p->username, sizeof buf);
212380e3 AC	158	register_local_user(blcptr->client_p, blcptr->client_p, buf);
	159	}
	160
637c4932	161	rb_free(blcptr);
212380e3 AC	162	}
212380e3 AC	163
212380e3 AC	164	static void initiate_blacklist_dnsquery(struct Blacklist blptr, struct Client client_p)
212380e3 AC	165	{
eddc2ab6	166	struct BlacklistClient *blcptr = rb_malloc(sizeof(struct BlacklistClient));
db3efb7a	167	char buf[IRCD_RES_HOSTLEN + 1];
5d21ef50	168	uint8_t *ip;
212380e3 AC	169
	170	blcptr->blacklist = blptr;
	171	blcptr->client_p = client_p;
	172
	173	blcptr->dns_query.ptr = blcptr;
	174	blcptr->dns_query.callback = blacklist_dns_callback;
	175
0a1e77c2 EM	176	if ((client_p->localClient->ip.ss_family == AF_INET) && blptr->ipv4)
	177	{
	178	ip = (uint8_t )&((struct sockaddr_in )&client_p->localClient->ip)->sin_addr.s_addr;
	179
	180	/* becomes 2.0.0.127.torbl.ahbl.org or whatever */
	181	rb_snprintf(buf, sizeof buf, "%d.%d.%d.%d.%s",
	182	(unsigned int) ip[3],
	183	(unsigned int) ip[2],
	184	(unsigned int) ip[1],
	185	(unsigned int) ip[0],
	186	blptr->host);
	187	}
	188	/* IPv6 is supported now. --Elizabeth */
	189	else if ((client_p->localClient->ip.ss_family == AF_INET6) && blptr->ipv6)
	190	{
	191	/* Breaks it into ip[0] = 0x00, ip[1] = 0x00... ip[16] = 0x01 for localhost
	192	* I wish there was a uint4_t for C, this would make the below cleaner, but... */
	193	ip = (uint8_t )&((struct sockaddr_in6 )&client_p->localClient->ip)->sin6_addr.s6_addr;
	194	char *bufptr = buf;
	195	int i;
	196
	197	/* The below will give us something like
	198	* 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
	199	*/
	200
	201	/* Going backwards */
	202	for (i = 15; i >= 0; i--)
	203	{
	204	/* Get upper and lower nibbles (yes this works fine on
	205	* both big and little endian) */
	206	uint8_t hi = (ip[i] >> 4) & 0x0F;
	207	uint8_t lo = ip[i] & 0x0F;
	208
	209	/* One part... (why 5? rb_snprintf adds \0) */
	210	rb_snprintf(bufptr, 5, "%1x.%1x.",
	211	(unsigned int) lo, /* Remember, backwards */
	212	(unsigned int) hi);
	213
	214	/* Lurch forward to next position */
	215	bufptr += 4;
	216	}
212380e3	217
0a1e77c2 EM	218	/* Tack host on */
	219	strcpy(bufptr, blptr->host);
	220	}
	221	/* This shouldn't happen... */
	222	else
	223	return;
212380e3 AC	224
	225	gethost_byname_type(buf, &blcptr->dns_query, T_A);
	226
b2f0da88	227	rb_dlinkAdd(blcptr, &blcptr->node, &client_p->preClient->dnsbl_queries);
212380e3 AC	228	blptr->refcount++;
	229	}
	230
	231	/* public interfaces */
3c93d380	232	struct Blacklist new_blacklist(char name, char reject_reason, int ipv4, int ipv6, rb_dlink_list filters)
212380e3 AC	233	{
	234	struct Blacklist *blptr;
	235
	236	if (name == NULL \|\| reject_reason == NULL)
	237	return NULL;
	238
	239	blptr = find_blacklist(name);
	240	if (blptr == NULL)
	241	{
eddc2ab6	242	blptr = rb_malloc(sizeof(struct Blacklist));
b2f0da88	243	rb_dlinkAddAlloc(blptr, &blacklist_list);
212380e3 AC	244	}
	245	else
	246	blptr->status &= ~CONF_ILLEGAL;
3c93d380	247
db3efb7a	248	rb_strlcpy(blptr->host, name, IRCD_RES_HOSTLEN + 1);
f427c8b0	249	rb_strlcpy(blptr->reject_reason, reject_reason, IRCD_BUFSIZE);
0a1e77c2 EM	250	blptr->ipv4 = ipv4;
0a1e77c2 EM	251	blptr->ipv6 = ipv6;
3c93d380 EM	252
	253	rb_dlinkMoveList(filters, &blptr->filters);
	254
96274734	255	blptr->lastwarning = 0;
212380e3 AC	256
	257	return blptr;
	258	}
	259
	260	void unref_blacklist(struct Blacklist *blptr)
	261	{
3c93d380 EM	262	rb_dlink_node ptr, next_ptr;
3c93d380 EM	263
212380e3 AC	264	blptr->refcount--;
	265	if (blptr->status & CONF_ILLEGAL && blptr->refcount <= 0)
	266	{
3c93d380 EM	267	RB_DLINK_FOREACH_SAFE(ptr, next_ptr, blptr->filters.head)
	268	{
	269	rb_free(ptr);
	270	rb_dlinkDelete(ptr, &blptr->filters);
	271	}
	272
b2f0da88	273	rb_dlinkFindDestroy(blptr, &blacklist_list);
637c4932	274	rb_free(blptr);
212380e3 AC	275	}
	276	}
	277
	278	void lookup_blacklists(struct Client *client_p)
	279	{
b2f0da88	280	rb_dlink_node *nptr;
212380e3	281
b2f0da88	282	RB_DLINK_FOREACH(nptr, blacklist_list.head)
212380e3 AC	283	{
	284	struct Blacklist blptr = (struct Blacklist ) nptr->data;
	285
	286	if (!(blptr->status & CONF_ILLEGAL))
	287	initiate_blacklist_dnsquery(blptr, client_p);
	288	}
	289	}
	290
	291	void abort_blacklist_queries(struct Client *client_p)
	292	{
637c4932	293	rb_dlink_node ptr, next_ptr;
212380e3 AC	294	struct BlacklistClient *blcptr;
	295
	296	if (client_p->preClient == NULL)
	297	return;
637c4932	298	RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->preClient->dnsbl_queries.head)
212380e3 AC	299	{
212380e3 AC	300	blcptr = ptr->data;
b2f0da88	301	rb_dlinkDelete(&blcptr->node, &client_p->preClient->dnsbl_queries);
212380e3 AC	302	unref_blacklist(blcptr->blacklist);
212380e3 AC	303	delete_resolver_queries(&blcptr->dns_query);
637c4932	304	rb_free(blcptr);
212380e3 AC	305	}
	306	}
	307
	308	void destroy_blacklists(void)
	309	{
637c4932	310	rb_dlink_node ptr, next_ptr;
212380e3 AC	311	struct Blacklist *blptr;
212380e3 AC	312
637c4932	313	RB_DLINK_FOREACH_SAFE(ptr, next_ptr, blacklist_list.head)
212380e3 AC	314	{
	315	blptr = ptr->data;
	316	blptr->hits = 0; /* keep it simple and consistent */
	317	if (blptr->refcount > 0)
	318	blptr->status \|= CONF_ILLEGAL;
	319	else
	320	{
637c4932	321	rb_free(ptr->data);
b2f0da88	322	rb_dlinkDestroy(ptr, &blacklist_list);
212380e3 AC	323	}
	324	}
	325	}