[solanum.git] / ircd / reject.c

/*
 *  ircd-ratbox: A slightly useful ircd
 *  reject.c: reject users with prejudice
 *
 *  Copyright (C) 2003 Aaron Sethman <androsyn@ratbox.org>
 *  Copyright (C) 2003-2005 ircd-ratbox development team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
 *  USA
 */

#include "stdinc.h"
#include "client.h"
#include "s_conf.h"
#include "reject.h"
#include "s_stats.h"
#include "ircd.h"
#include "send.h"
#include "numeric.h"
#include "parse.h"
#include "hostmask.h"
#include "match.h"
#include "hash.h"

static rb_patricia_tree_t *reject_tree;
static rb_dlink_list delay_exit;
static rb_dlink_list reject_list;
static rb_dlink_list throttle_list;
static rb_patricia_tree_t *throttle_tree;
static void throttle_expires(void *unused);


typedef struct _reject_data
{
	rb_dlink_node rnode;
	struct ConfItem *aconf;
	const char *reason;
	time_t time;
	unsigned int count;
	uint32_t mask_hashv;
} reject_t;

typedef struct _delay_data
{
	rb_dlink_node node;
	rb_fde_t *F;
	struct ConfItem *aconf;
	const char *reason;
} delay_t;

typedef struct _throttle
{
	rb_dlink_node node;
	time_t last;
	int count;
} throttle_t;

unsigned long
delay_exit_length(void)
{
	return rb_dlink_list_length(&delay_exit);
}

static void
reject_free(reject_t *rdata)
{
	struct ConfItem *aconf = rdata->aconf;

	if (aconf)
		deref_conf(aconf);

	rb_free(rdata);
}

static void
reject_exit(void *unused)
{
	static char dynamic_reason[BUFSIZE];
	rb_dlink_node *ptr, *ptr_next;
	delay_t *ddata;
	static const char *errbuf = "ERROR :Closing Link: (*** Banned (cache))\r\n";

	RB_DLINK_FOREACH_SAFE(ptr, ptr_next, delay_exit.head)
	{
		ddata = ptr->data;

		*dynamic_reason = '\0';

		if (ddata->aconf)
		{
			snprintf(dynamic_reason, BUFSIZE, form_str(ERR_YOUREBANNEDCREEP) "\r\n",
				me.name, "*", get_user_ban_reason(ddata->aconf));
			rb_write(ddata->F, dynamic_reason, strlen(dynamic_reason));

			deref_conf(ddata->aconf);
		}
		else if (ddata->reason)
		{
			snprintf(dynamic_reason, BUFSIZE, ":%s 465 %s :%s\r\n",
				me.name, "*", ddata->reason);
			rb_write(ddata->F, dynamic_reason, strlen(dynamic_reason));
		}

		rb_write(ddata->F, errbuf, strlen(errbuf));
		rb_close(ddata->F);
		rb_free(ddata);
	}

	delay_exit.head = delay_exit.tail = NULL;
	delay_exit.length = 0;
}

static void
reject_expires(void *unused)
{
	rb_dlink_node *ptr, *next;
	rb_patricia_node_t *pnode;
	reject_t *rdata;

	RB_DLINK_FOREACH_SAFE(ptr, next, reject_list.head)
	{
		pnode = ptr->data;
		rdata = pnode->data;

		if(rdata->time + ConfigFileEntry.reject_duration > rb_current_time())
			continue;

		rb_dlinkDelete(ptr, &reject_list);
		reject_free(rdata);
		rb_patricia_remove(reject_tree, pnode);
	}
}

void
init_reject(void)
{
	reject_tree = rb_new_patricia(PATRICIA_BITS);
	throttle_tree = rb_new_patricia(PATRICIA_BITS);
	rb_event_add("reject_exit", reject_exit, NULL, DELAYED_EXIT_TIME);
	rb_event_add("reject_expires", reject_expires, NULL, 60);
	rb_event_add("throttle_expires", throttle_expires, NULL, 10);
}

unsigned long
throttle_size(void)
{
	unsigned long count;
	rb_dlink_node *ptr;
	rb_patricia_node_t *pnode;
	throttle_t *t;

	count = 0;
	RB_DLINK_FOREACH(ptr, throttle_list.head)
	{
		pnode = ptr->data;
		t = pnode->data;
		if (t->count > ConfigFileEntry.throttle_count)
			count++;
	}

	return count;
}

void
add_reject(struct Client *client_p, const char *mask1, const char *mask2, struct ConfItem *aconf, const char *reason)
{
	rb_patricia_node_t *pnode;
	reject_t *rdata;
	uint32_t hashv;

	/* Reject is disabled */
	if(ConfigFileEntry.reject_after_count == 0 || ConfigFileEntry.reject_duration == 0)
		return;

	hashv = 0;
	if (mask1 != NULL)
		hashv ^= fnv_hash_upper((const unsigned char *)mask1, 32);
	if (mask2 != NULL)
		hashv ^= fnv_hash_upper((const unsigned char *)mask2, 32);

	if((pnode = rb_match_ip(reject_tree, (struct sockaddr *)&client_p->localClient->ip)) != NULL)
	{
		rdata = pnode->data;
		rdata->time = rb_current_time();
		rdata->count++;
	}
	else
	{
		int bitlen = 32;
		if(GET_SS_FAMILY(&client_p->localClient->ip) == AF_INET6)
			bitlen = 128;
		pnode = make_and_lookup_ip(reject_tree, (struct sockaddr *)&client_p->localClient->ip, bitlen);
		pnode->data = rdata = rb_malloc(sizeof(reject_t));
		rb_dlinkAddTail(pnode, &rdata->rnode, &reject_list);
		rdata->time = rb_current_time();
		rdata->count = 1;
		rdata->aconf = NULL;
		rdata->reason = NULL;
	}
	rdata->mask_hashv = hashv;

	if (aconf != NULL && aconf != rdata->aconf && (aconf->status & CONF_KILL) && aconf->passwd)
	{
		if (rdata->aconf != NULL)
			deref_conf(rdata->aconf);
		aconf->clients++;
		rdata->aconf = aconf;
	}
	else if (reason != NULL)
	{
		if (rdata->aconf != NULL)
			deref_conf(rdata->aconf);
		rdata->aconf = NULL;
		rdata->reason = reason;
	}
}

int
check_reject(rb_fde_t *F, struct sockaddr *addr)
{
	rb_patricia_node_t *pnode;
	reject_t *rdata;
	delay_t *ddata;

	/* Reject is disabled */
	if (ConfigFileEntry.reject_after_count == 0 || ConfigFileEntry.reject_duration == 0)
		return 0;

	pnode = rb_match_ip(reject_tree, addr);
	if (pnode == NULL)
		return 0;

	rdata = pnode->data;
	rdata->time = rb_current_time();

	if (rdata->count <= (unsigned long)ConfigFileEntry.reject_after_count)
		return 0;

	if (rdata->aconf != NULL && rdata->aconf->status & CONF_ILLEGAL)
	{
		rb_dlinkDelete(&rdata->rnode, &reject_list);
		reject_free(rdata);
		rb_patricia_remove(reject_tree, pnode);
		return 0;
	}

	ddata = rb_malloc(sizeof(delay_t));
	ServerStats.is_rej++;
	rb_setselect(F, RB_SELECT_WRITE | RB_SELECT_READ, NULL, NULL);
	if (rdata->aconf)
	{
		ddata->aconf = rdata->aconf;
		ddata->aconf->clients++;
		ddata->reason = NULL;
	}
	else if (rdata->reason)
	{
		ddata->reason = rdata->reason;
		ddata->aconf = NULL;
	}
	else
	{
		ddata->aconf = NULL;
		ddata->reason = NULL;
	}
	ddata->F = F;
	rb_dlinkAdd(ddata, &ddata->node, &delay_exit);
	return 1;
}

int
is_reject_ip(struct sockaddr *addr)
{
	rb_patricia_node_t *pnode;
	reject_t *rdata;
	int duration;

	/* Reject is disabled */
	if(ConfigFileEntry.reject_after_count == 0 || ConfigFileEntry.reject_duration == 0)
		return 0;

	pnode = rb_match_ip(reject_tree, addr);
	if(pnode != NULL)
	{
		rdata = pnode->data;

		if(rdata->count > (unsigned long)ConfigFileEntry.reject_after_count)
		{
			duration = rdata->time + ConfigFileEntry.reject_duration - rb_current_time();
			return duration > 0 ? duration : 1;
		}
	}
	return 0;
}

void
flush_reject(void)
{
	rb_dlink_node *ptr, *next;
	rb_patricia_node_t *pnode;
	reject_t *rdata;

	RB_DLINK_FOREACH_SAFE(ptr, next, reject_list.head)
	{
		pnode = ptr->data;
		rdata = pnode->data;
		rb_dlinkDelete(ptr, &reject_list);
		reject_free(rdata);
		rb_patricia_remove(reject_tree, pnode);
	}
}

int
remove_reject_ip(const char *ip)
{
	rb_patricia_node_t *pnode;

	/* Reject is disabled */
	if(ConfigFileEntry.reject_after_count == 0 || ConfigFileEntry.reject_duration == 0)
		return -1;

	if((pnode = rb_match_string(reject_tree, ip)) != NULL)
	{
		reject_t *rdata = pnode->data;
		rb_dlinkDelete(&rdata->rnode, &reject_list);
		reject_free(rdata);
		rb_patricia_remove(reject_tree, pnode);
		return 1;
	}
	return 0;
}

int
remove_reject_mask(const char *mask1, const char *mask2)
{
	rb_dlink_node *ptr, *next;
	rb_patricia_node_t *pnode;
	reject_t *rdata;
	uint32_t hashv;
	int n = 0;

	hashv = 0;
	if (mask1 != NULL)
		hashv ^= fnv_hash_upper((const unsigned char *)mask1, 32);
	if (mask2 != NULL)
		hashv ^= fnv_hash_upper((const unsigned char *)mask2, 32);
	RB_DLINK_FOREACH_SAFE(ptr, next, reject_list.head)
	{
		pnode = ptr->data;
		rdata = pnode->data;
		if (rdata->mask_hashv == hashv)
		{
			rb_dlinkDelete(ptr, &reject_list);
			reject_free(rdata);
			rb_patricia_remove(reject_tree, pnode);
			n++;
		}
	}
	return n;
}

int
throttle_add(struct sockaddr *addr)
{
	throttle_t *t;
	rb_patricia_node_t *pnode;

	if((pnode = rb_match_ip(throttle_tree, addr)) != NULL)
	{
		t = pnode->data;

		if(t->count > ConfigFileEntry.throttle_count)
		{
			ServerStats.is_thr++;
			return 1;
		}
		/* Stop penalizing them after they've been throttled */
		t->last = rb_current_time();
		t->count++;

	} else {
		int bitlen = 32;
		if(GET_SS_FAMILY(addr) == AF_INET6)
			bitlen = 128;
		t = rb_malloc(sizeof(throttle_t));
		t->last = rb_current_time();
		t->count = 1;
		pnode = make_and_lookup_ip(throttle_tree, addr, bitlen);
		pnode->data = t;
		rb_dlinkAdd(pnode, &t->node, &throttle_list);
	}
	return 0;
}

int
is_throttle_ip(struct sockaddr *addr)
{
	throttle_t *t;
	rb_patricia_node_t *pnode;
	int duration;

	if((pnode = rb_match_ip(throttle_tree, addr)) != NULL)
	{
		t = pnode->data;
		if(t->count > ConfigFileEntry.throttle_count)
		{
			duration = t->last + ConfigFileEntry.throttle_duration - rb_current_time();
			return duration > 0 ? duration : 1;
		}
	}
	return 0;
}

void
flush_throttle(void)
{
	rb_dlink_node *ptr, *next;
	rb_patricia_node_t *pnode;
	throttle_t *t;

	RB_DLINK_FOREACH_SAFE(ptr, next, throttle_list.head)
	{
		pnode = ptr->data;
		t = pnode->data;

		rb_dlinkDelete(ptr, &throttle_list);
		rb_free(t);
		rb_patricia_remove(throttle_tree, pnode);
	}
}

static void
throttle_expires(void *unused)
{
	rb_dlink_node *ptr, *next;
	rb_patricia_node_t *pnode;
	throttle_t *t;

	RB_DLINK_FOREACH_SAFE(ptr, next, throttle_list.head)
	{
		pnode = ptr->data;
		t = pnode->data;

		if(t->last + ConfigFileEntry.throttle_duration > rb_current_time())
			continue;

		rb_dlinkDelete(ptr, &throttle_list);
		rb_free(t);
		rb_patricia_remove(throttle_tree, pnode);
	}
}
Commit	Line	Data
54ac8b60 VY	1	/*
	2	* ircd-ratbox: A slightly useful ircd
	3	* reject.c: reject users with prejudice
	4	*
	5	* Copyright (C) 2003 Aaron Sethman <androsyn@ratbox.org>
	6	* Copyright (C) 2003-2005 ircd-ratbox development team
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
43946961	20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
54ac8b60	21	* USA
54ac8b60 VY	22	*/
	23
	24	#include "stdinc.h"
54ac8b60 VY	25	#include "client.h"
	26	#include "s_conf.h"
	27	#include "reject.h"
	28	#include "s_stats.h"
43946961 JT	29	#include "ircd.h"
	30	#include "send.h"
	31	#include "numeric.h"
	32	#include "parse.h"
	33	#include "hostmask.h"
	34	#include "match.h"
54ac8b60 VY	35	#include "hash.h"
54ac8b60 VY	36
0240b419	37	static rb_patricia_tree_t *reject_tree;
43946961	38	static rb_dlink_list delay_exit;
54ac8b60	39	static rb_dlink_list reject_list;
43946961 JT	40	static rb_dlink_list throttle_list;
	41	static rb_patricia_tree_t *throttle_tree;
	42	static void throttle_expires(void *unused);
54ac8b60	43
54ac8b60	44
43946961	45	typedef struct _reject_data
54ac8b60 VY	46	{
54ac8b60 VY	47	rb_dlink_node rnode;
a9536f75 EK	48	struct ConfItem *aconf;
a9536f75 EK	49	const char *reason;
54ac8b60 VY	50	time_t time;
	51	unsigned int count;
	52	uint32_t mask_hashv;
43946961 JT	53	} reject_t;
	54
	55	typedef struct _delay_data
	56	{
	57	rb_dlink_node node;
	58	rb_fde_t *F;
a9536f75 EK	59	struct ConfItem *aconf;
a9536f75 EK	60	const char *reason;
43946961 JT	61	} delay_t;
	62
	63	typedef struct _throttle
	64	{
	65	rb_dlink_node node;
	66	time_t last;
	67	int count;
	68	} throttle_t;
	69
	70	unsigned long
	71	delay_exit_length(void)
	72	{
	73	return rb_dlink_list_length(&delay_exit);
	74	}
54ac8b60	75
a9536f75 EK	76	static void
	77	reject_free(reject_t *rdata)
	78	{
	79	struct ConfItem *aconf = rdata->aconf;
	80
	81	if (aconf)
	82	deref_conf(aconf);
	83
	84	rb_free(rdata);
	85	}
	86
54ac8b60 VY	87	static void
	88	reject_exit(void *unused)
	89	{
a9536f75	90	static char dynamic_reason[BUFSIZE];
54ac8b60	91	rb_dlink_node ptr, ptr_next;
43946961 JT	92	delay_t *ddata;
43946961 JT	93	static const char errbuf = "ERROR :Closing Link: (** Banned (cache))\r\n";
55abcbb2	94
54ac8b60 VY	95	RB_DLINK_FOREACH_SAFE(ptr, ptr_next, delay_exit.head)
54ac8b60 VY	96	{
43946961 JT	97	ddata = ptr->data;
43946961 JT	98
a9536f75 EK	99	*dynamic_reason = '\0';
	100
	101	if (ddata->aconf)
	102	{
	103	snprintf(dynamic_reason, BUFSIZE, form_str(ERR_YOUREBANNEDCREEP) "\r\n",
	104	me.name, "*", get_user_ban_reason(ddata->aconf));
	105	rb_write(ddata->F, dynamic_reason, strlen(dynamic_reason));
	106
	107	deref_conf(ddata->aconf);
	108	}
	109	else if (ddata->reason)
	110	{
	111	snprintf(dynamic_reason, BUFSIZE, ":%s 465 %s :%s\r\n",
	112	me.name, "*", ddata->reason);
	113	rb_write(ddata->F, dynamic_reason, strlen(dynamic_reason));
	114	}
	115
55abcbb2	116	rb_write(ddata->F, errbuf, strlen(errbuf));
43946961 JT	117	rb_close(ddata->F);
43946961 JT	118	rb_free(ddata);
54ac8b60 VY	119	}
54ac8b60 VY	120
43946961 JT	121	delay_exit.head = delay_exit.tail = NULL;
43946961 JT	122	delay_exit.length = 0;
54ac8b60 VY	123	}
	124
	125	static void
	126	reject_expires(void *unused)
	127	{
	128	rb_dlink_node ptr, next;
0240b419	129	rb_patricia_node_t *pnode;
43946961	130	reject_t *rdata;
55abcbb2	131
54ac8b60 VY	132	RB_DLINK_FOREACH_SAFE(ptr, next, reject_list.head)
	133	{
	134	pnode = ptr->data;
55abcbb2	135	rdata = pnode->data;
54ac8b60 VY	136
	137	if(rdata->time + ConfigFileEntry.reject_duration > rb_current_time())
	138	continue;
	139
	140	rb_dlinkDelete(ptr, &reject_list);
a9536f75	141	reject_free(rdata);
0240b419	142	rb_patricia_remove(reject_tree, pnode);
54ac8b60 VY	143	}
	144	}
	145
	146	void
	147	init_reject(void)
	148	{
0240b419	149	reject_tree = rb_new_patricia(PATRICIA_BITS);
43946961	150	throttle_tree = rb_new_patricia(PATRICIA_BITS);
54ac8b60 VY	151	rb_event_add("reject_exit", reject_exit, NULL, DELAYED_EXIT_TIME);
54ac8b60 VY	152	rb_event_add("reject_expires", reject_expires, NULL, 60);
43946961	153	rb_event_add("throttle_expires", throttle_expires, NULL, 10);
54ac8b60 VY	154	}
54ac8b60 VY	155
ae09cb7d JT	156	unsigned long
	157	throttle_size(void)
	158	{
16ef24cf JT	159	unsigned long count;
	160	rb_dlink_node *ptr;
	161	rb_patricia_node_t *pnode;
	162	throttle_t *t;
	163
	164	count = 0;
	165	RB_DLINK_FOREACH(ptr, throttle_list.head)
	166	{
	167	pnode = ptr->data;
	168	t = pnode->data;
	169	if (t->count > ConfigFileEntry.throttle_count)
	170	count++;
	171	}
	172
	173	return count;
ae09cb7d	174	}
54ac8b60 VY	175
54ac8b60 VY	176	void
a9536f75	177	add_reject(struct Client client_p, const char mask1, const char mask2, struct ConfItem aconf, const char *reason)
54ac8b60	178	{
0240b419	179	rb_patricia_node_t *pnode;
43946961	180	reject_t *rdata;
54ac8b60 VY	181	uint32_t hashv;
	182
	183	/* Reject is disabled */
43946961	184	if(ConfigFileEntry.reject_after_count == 0 \|\| ConfigFileEntry.reject_duration == 0)
54ac8b60 VY	185	return;
	186
	187	hashv = 0;
	188	if (mask1 != NULL)
43946961	189	hashv ^= fnv_hash_upper((const unsigned char *)mask1, 32);
54ac8b60	190	if (mask2 != NULL)
43946961	191	hashv ^= fnv_hash_upper((const unsigned char *)mask2, 32);
54ac8b60	192
0240b419	193	if((pnode = rb_match_ip(reject_tree, (struct sockaddr *)&client_p->localClient->ip)) != NULL)
54ac8b60 VY	194	{
	195	rdata = pnode->data;
	196	rdata->time = rb_current_time();
	197	rdata->count++;
	198	}
	199	else
	200	{
	201	int bitlen = 32;
43946961	202	if(GET_SS_FAMILY(&client_p->localClient->ip) == AF_INET6)
54ac8b60	203	bitlen = 128;
54ac8b60	204	pnode = make_and_lookup_ip(reject_tree, (struct sockaddr *)&client_p->localClient->ip, bitlen);
43946961	205	pnode->data = rdata = rb_malloc(sizeof(reject_t));
54ac8b60 VY	206	rb_dlinkAddTail(pnode, &rdata->rnode, &reject_list);
	207	rdata->time = rb_current_time();
	208	rdata->count = 1;
a9536f75 EK	209	rdata->aconf = NULL;
a9536f75 EK	210	rdata->reason = NULL;
54ac8b60 VY	211	}
54ac8b60 VY	212	rdata->mask_hashv = hashv;
a9536f75 EK	213
	214	if (aconf != NULL && aconf != rdata->aconf && (aconf->status & CONF_KILL) && aconf->passwd)
	215	{
	216	if (rdata->aconf != NULL)
	217	deref_conf(rdata->aconf);
	218	aconf->clients++;
	219	rdata->aconf = aconf;
	220	}
	221	else if (reason != NULL)
	222	{
	223	if (rdata->aconf != NULL)
	224	deref_conf(rdata->aconf);
	225	rdata->aconf = NULL;
	226	rdata->reason = reason;
	227	}
54ac8b60 VY	228	}
	229
	230	int
43946961	231	check_reject(rb_fde_t F, struct sockaddr addr)
54ac8b60	232	{
0240b419	233	rb_patricia_node_t *pnode;
43946961 JT	234	reject_t *rdata;
43946961 JT	235	delay_t *ddata;
6cd12661	236
54ac8b60	237	/* Reject is disabled */
6cd12661	238	if (ConfigFileEntry.reject_after_count == 0 \|\| ConfigFileEntry.reject_duration == 0)
54ac8b60	239	return 0;
55abcbb2	240
43946961	241	pnode = rb_match_ip(reject_tree, addr);
6cd12661 EK	242	if (pnode == NULL)
	243	return 0;
	244
	245	rdata = pnode->data;
	246	rdata->time = rb_current_time();
	247
	248	if (rdata->count <= (unsigned long)ConfigFileEntry.reject_after_count)
	249	return 0;
	250
	251	if (rdata->aconf != NULL && rdata->aconf->status & CONF_ILLEGAL)
54ac8b60	252	{
6cd12661 EK	253	rb_dlinkDelete(&rdata->rnode, &reject_list);
	254	reject_free(rdata);
	255	rb_patricia_remove(reject_tree, pnode);
	256	return 0;
	257	}
54ac8b60	258
6cd12661 EK	259	ddata = rb_malloc(sizeof(delay_t));
	260	ServerStats.is_rej++;
	261	rb_setselect(F, RB_SELECT_WRITE \| RB_SELECT_READ, NULL, NULL);
	262	if (rdata->aconf)
	263	{
	264	ddata->aconf = rdata->aconf;
	265	ddata->aconf->clients++;
	266	ddata->reason = NULL;
55abcbb2	267	}
6cd12661 EK	268	else if (rdata->reason)
	269	{
	270	ddata->reason = rdata->reason;
	271	ddata->aconf = NULL;
	272	}
	273	else
	274	{
	275	ddata->aconf = NULL;
	276	ddata->reason = NULL;
	277	}
	278	ddata->F = F;
	279	rb_dlinkAdd(ddata, &ddata->node, &delay_exit);
	280	return 1;
54ac8b60 VY	281	}
54ac8b60 VY	282
83235e9e JT	283	int
	284	is_reject_ip(struct sockaddr *addr)
	285	{
	286	rb_patricia_node_t *pnode;
	287	reject_t *rdata;
	288	int duration;
	289
	290	/* Reject is disabled */
	291	if(ConfigFileEntry.reject_after_count == 0 \|\| ConfigFileEntry.reject_duration == 0)
	292	return 0;
55abcbb2	293
83235e9e JT	294	pnode = rb_match_ip(reject_tree, addr);
	295	if(pnode != NULL)
	296	{
	297	rdata = pnode->data;
	298
	299	if(rdata->count > (unsigned long)ConfigFileEntry.reject_after_count)
	300	{
	301	duration = rdata->time + ConfigFileEntry.reject_duration - rb_current_time();
	302	return duration > 0 ? duration : 1;
	303	}
55abcbb2	304	}
83235e9e JT	305	return 0;
	306	}
	307
55abcbb2	308	void
54ac8b60 VY	309	flush_reject(void)
	310	{
	311	rb_dlink_node ptr, next;
0240b419	312	rb_patricia_node_t *pnode;
43946961	313	reject_t *rdata;
55abcbb2	314
54ac8b60 VY	315	RB_DLINK_FOREACH_SAFE(ptr, next, reject_list.head)
	316	{
	317	pnode = ptr->data;
	318	rdata = pnode->data;
	319	rb_dlinkDelete(ptr, &reject_list);
a9536f75	320	reject_free(rdata);
0240b419	321	rb_patricia_remove(reject_tree, pnode);
54ac8b60 VY	322	}
	323	}
	324
55abcbb2	325	int
54ac8b60 VY	326	remove_reject_ip(const char *ip)
54ac8b60 VY	327	{
0240b419	328	rb_patricia_node_t *pnode;
55abcbb2	329
54ac8b60	330	/* Reject is disabled */
43946961	331	if(ConfigFileEntry.reject_after_count == 0 \|\| ConfigFileEntry.reject_duration == 0)
54ac8b60 VY	332	return -1;
54ac8b60 VY	333
0240b419	334	if((pnode = rb_match_string(reject_tree, ip)) != NULL)
54ac8b60	335	{
43946961	336	reject_t *rdata = pnode->data;
54ac8b60	337	rb_dlinkDelete(&rdata->rnode, &reject_list);
a9536f75	338	reject_free(rdata);
0240b419	339	rb_patricia_remove(reject_tree, pnode);
54ac8b60 VY	340	return 1;
	341	}
	342	return 0;
	343	}
	344
	345	int
	346	remove_reject_mask(const char mask1, const char mask2)
	347	{
	348	rb_dlink_node ptr, next;
0240b419	349	rb_patricia_node_t *pnode;
43946961	350	reject_t *rdata;
54ac8b60 VY	351	uint32_t hashv;
54ac8b60 VY	352	int n = 0;
55abcbb2	353
54ac8b60 VY	354	hashv = 0;
54ac8b60 VY	355	if (mask1 != NULL)
43946961	356	hashv ^= fnv_hash_upper((const unsigned char *)mask1, 32);
54ac8b60	357	if (mask2 != NULL)
43946961	358	hashv ^= fnv_hash_upper((const unsigned char *)mask2, 32);
54ac8b60 VY	359	RB_DLINK_FOREACH_SAFE(ptr, next, reject_list.head)
	360	{
	361	pnode = ptr->data;
	362	rdata = pnode->data;
	363	if (rdata->mask_hashv == hashv)
	364	{
	365	rb_dlinkDelete(ptr, &reject_list);
a9536f75	366	reject_free(rdata);
0240b419	367	rb_patricia_remove(reject_tree, pnode);
54ac8b60 VY	368	n++;
	369	}
	370	}
	371	return n;
	372	}
	373
54ac8b60	374	int
43946961	375	throttle_add(struct sockaddr *addr)
54ac8b60	376	{
43946961	377	throttle_t *t;
0240b419	378	rb_patricia_node_t *pnode;
54ac8b60	379
43946961	380	if((pnode = rb_match_ip(throttle_tree, addr)) != NULL)
54ac8b60	381	{
43946961 JT	382	t = pnode->data;
	383
	384	if(t->count > ConfigFileEntry.throttle_count)
ae09cb7d JT	385	{
	386	ServerStats.is_thr++;
	387	return 1;
	388	}
43946961 JT	389	/* Stop penalizing them after they've been throttled */
	390	t->last = rb_current_time();
	391	t->count++;
	392
	393	} else {
54ac8b60	394	int bitlen = 32;
43946961	395	if(GET_SS_FAMILY(addr) == AF_INET6)
54ac8b60	396	bitlen = 128;
55abcbb2	397	t = rb_malloc(sizeof(throttle_t));
43946961 JT	398	t->last = rb_current_time();
	399	t->count = 1;
	400	pnode = make_and_lookup_ip(throttle_tree, addr, bitlen);
	401	pnode->data = t;
55abcbb2 KB	402	rb_dlinkAdd(pnode, &t->node, &throttle_list);
55abcbb2 KB	403	}
54ac8b60 VY	404	return 0;
	405	}
	406
83235e9e JT	407	int
	408	is_throttle_ip(struct sockaddr *addr)
	409	{
	410	throttle_t *t;
	411	rb_patricia_node_t *pnode;
	412	int duration;
	413
	414	if((pnode = rb_match_ip(throttle_tree, addr)) != NULL)
	415	{
	416	t = pnode->data;
	417	if(t->count > ConfigFileEntry.throttle_count)
	418	{
	419	duration = t->last + ConfigFileEntry.throttle_duration - rb_current_time();
	420	return duration > 0 ? duration : 1;
	421	}
	422	}
	423	return 0;
	424	}
	425
55abcbb2	426	void
995f300e JT	427	flush_throttle(void)
	428	{
	429	rb_dlink_node ptr, next;
	430	rb_patricia_node_t *pnode;
	431	throttle_t *t;
55abcbb2	432
995f300e JT	433	RB_DLINK_FOREACH_SAFE(ptr, next, throttle_list.head)
	434	{
	435	pnode = ptr->data;
55abcbb2	436	t = pnode->data;
995f300e JT	437
	438	rb_dlinkDelete(ptr, &throttle_list);
	439	rb_free(t);
	440	rb_patricia_remove(throttle_tree, pnode);
	441	}
	442	}
	443
43946961 JT	444	static void
43946961 JT	445	throttle_expires(void *unused)
54ac8b60	446	{
43946961	447	rb_dlink_node ptr, next;
0240b419	448	rb_patricia_node_t *pnode;
43946961	449	throttle_t *t;
55abcbb2	450
43946961	451	RB_DLINK_FOREACH_SAFE(ptr, next, throttle_list.head)
54ac8b60	452	{
43946961	453	pnode = ptr->data;
55abcbb2	454	t = pnode->data;
43946961 JT	455
	456	if(t->last + ConfigFileEntry.throttle_duration > rb_current_time())
	457	continue;
	458
	459	rb_dlinkDelete(ptr, &throttle_list);
	460	rb_free(t);
	461	rb_patricia_remove(throttle_tree, pnode);
54ac8b60	462	}
54ac8b60	463	}
43946961	464