trunk/src/conf_class.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *
 *  Copyright (C) 2002 by the past and present ircd coders, and others.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 */

/*! \file
 * \brief Configuration managment for class{} blocks
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "ircd.h"
#include "conf.h"
#include "client.h"
#include "hostmask.h"
#include "irc_string.h"
#include "memory.h"


struct ClassItem *class_default;

static dlink_list class_list = { NULL, NULL, 0 };


const dlink_list *
class_get_list(void)
{
  return &class_list;
}

struct ClassItem *
class_make(void)
{
  struct ClassItem *class = MyMalloc(sizeof(*class));

  class->active    = 1;
  class->con_freq  = DEFAULT_CONNECTFREQUENCY;
  class->ping_freq = DEFAULT_PINGFREQUENCY;
  class->max_total = MAXIMUM_LINKS_DEFAULT;
  class->max_sendq = DEFAULT_SENDQ;
  class->max_recvq = DEFAULT_RECVQ;

  dlinkAdd(class, &class->node, &class_list);

  return class;
}

void
class_free(struct ClassItem *class)
{
  assert(class);
  assert(class->active    == 0);
  assert(class->ref_count == 0);

  dlinkDelete(&class->node, &class_list);
  MyFree(class->name);
  MyFree(class);
}

void
class_init(void)
{
  (class_default = class_make())->name = xstrdup("default");
}

const char *
get_client_class(const dlink_list *const list)
{
  const dlink_node *ptr = NULL;

  if ((ptr = list->head)) {
    const struct MaskItem *conf = ptr->data;

    assert(conf->class);
    assert(conf->type & (CONF_OPER | CONF_CLIENT | CONF_SERVER));

    return conf->class->name;
  }

  return class_default->name;
}

unsigned int
get_client_ping(const dlink_list *const list)
{
  const dlink_node *ptr = NULL;

  if ((ptr = list->head)) {
    const struct MaskItem *conf = ptr->data;

    assert(conf->class);
    assert(conf->type & (CONF_OPER | CONF_CLIENT | CONF_SERVER));

    return conf->class->ping_freq;
  }

  return class_default->ping_freq;
}

unsigned int
get_sendq(const dlink_list *const list)
{
  const dlink_node *ptr = NULL;

  if ((ptr = list->head)) {
    const struct MaskItem *conf = ptr->data;

    assert(conf->class);
    assert(conf->type & (CONF_OPER | CONF_CLIENT | CONF_SERVER));

    return conf->class->max_sendq;
  }

  return class_default->max_sendq;
}

unsigned int
get_recvq(const dlink_list *const list)
{
  const dlink_node *ptr = NULL;

  if ((ptr = list->head)) {
    const struct MaskItem *conf = ptr->data;

    assert(conf->class);
    assert(conf->type & (CONF_OPER | CONF_CLIENT | CONF_SERVER));

    return conf->class->max_recvq;
  }

  return class_default->max_recvq;
}

/*
 * inputs       - Integer (Number of class)
 * output       - Pointer to ClassItem struct. Non-NULL expected
 * side effects - NONE
 */
struct ClassItem *
class_find(const char *name, int active)
{
  dlink_node *ptr = NULL;

  DLINK_FOREACH(ptr, class_list.head) {
    struct ClassItem *class = ptr->data;

    if (!irccmp(class->name, name))
      return active && !class->active ? NULL : class;
  }

  return NULL;
}

/*
 * We don't delete the class table, rather mark all entries for deletion.
 * The table is cleaned up by delete_marked_classes. - avalon
 */
void
class_mark_for_deletion(void)
{
  dlink_node *ptr = NULL;

  DLINK_FOREACH_PREV(ptr, class_list.tail->prev)
    ((struct ClassItem *)ptr->data)->active = 0;
}

void
class_delete_marked(void)
{
  dlink_node *ptr = NULL, *ptr_next = NULL;

  DLINK_FOREACH_SAFE(ptr, ptr_next, class_list.head) {
    struct ClassItem *class = ptr->data;

    if (!class->active && !class->ref_count)
    {
      destroy_cidr_class(class);
      class_free(class);
    }
  }
}

/*
 * cidr_limit_reached
 *
 * inputs       - int flag allowing over_rule of limits
 *              - pointer to the ip to be added
 *              - pointer to the class
 * output       - non zero if limit reached
 *                0 if limit not reached
 * side effects -
 */
int
cidr_limit_reached(int over_rule,
                   struct irc_ssaddr *ip, struct ClassItem *class)
{
  dlink_node *ptr = NULL;
  struct CidrItem *cidr = NULL;

  if (class->number_per_cidr == 0)
    return 0;

  if (ip->ss.ss_family == AF_INET)
  {
    if (class->cidr_bitlen_ipv4 == 0)
      return 0;

    DLINK_FOREACH(ptr, class->list_ipv4.head)
    {
      cidr = ptr->data;
      if (match_ipv4(ip, &cidr->mask, class->cidr_bitlen_ipv4))
      {
        if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
          return -1;
        cidr->number_on_this_cidr++;
        return 0;
      }
    }
    cidr = MyMalloc(sizeof(struct CidrItem));
    cidr->number_on_this_cidr = 1;
    cidr->mask = *ip;
    mask_addr(&cidr->mask, class->cidr_bitlen_ipv4);
    dlinkAdd(cidr, &cidr->node, &class->list_ipv4);
  }
#ifdef IPV6
  else if (class->cidr_bitlen_ipv6 > 0)
  {
    DLINK_FOREACH(ptr, class->list_ipv6.head)
    {
      cidr = ptr->data;
      if (match_ipv6(ip, &cidr->mask, class->cidr_bitlen_ipv6))
      {
        if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
          return -1;
        cidr->number_on_this_cidr++;
        return 0;
      }
    }
    cidr = MyMalloc(sizeof(struct CidrItem));
    cidr->number_on_this_cidr = 1;
    cidr->mask = *ip;
    mask_addr(&cidr->mask, class->cidr_bitlen_ipv6);
    dlinkAdd(cidr, &cidr->node, &class->list_ipv6);
  }
#endif
  return 0;
}

/*
 * remove_from_cidr_check
 *
 * inputs       - pointer to the ip to be removed
 *              - pointer to the class
 * output       - NONE
 * side effects -
 */
void
remove_from_cidr_check(struct irc_ssaddr *ip, struct ClassItem *aclass)
{
  dlink_node *ptr = NULL;
  dlink_node *next_ptr = NULL;
  struct CidrItem *cidr;

  if (aclass->number_per_cidr == 0)
    return;

  if (ip->ss.ss_family == AF_INET)
  {
    if (aclass->cidr_bitlen_ipv4 == 0)
      return;

    DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv4.head)
    {
      cidr = ptr->data;
      if (match_ipv4(ip, &cidr->mask, aclass->cidr_bitlen_ipv4))
      {
        cidr->number_on_this_cidr--;
        if (cidr->number_on_this_cidr == 0)
        {
          dlinkDelete(ptr, &aclass->list_ipv4);
          MyFree(cidr);
          return;
        }
      }
    }
  }
#ifdef IPV6
  else if (aclass->cidr_bitlen_ipv6 > 0)
  {
    DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv6.head)
    {
      cidr = ptr->data;
      if (match_ipv6(ip, &cidr->mask, aclass->cidr_bitlen_ipv6))
      {
        cidr->number_on_this_cidr--;
        if (cidr->number_on_this_cidr == 0)
        {
          dlinkDelete(ptr, &aclass->list_ipv6);
          MyFree(cidr);
          return;
        }
      }
    }
  }
#endif
}

void
rebuild_cidr_list(struct ClassItem *class)
{
  dlink_node *ptr;

  destroy_cidr_class(class);

  DLINK_FOREACH(ptr, local_client_list.head)
  {
    struct Client *client_p = ptr->data;
    struct MaskItem *conf = client_p->localClient->confs.tail->data;

    if (conf && (conf->type == CONF_CLIENT))
      if (conf->class == class)
        cidr_limit_reached(1, &client_p->localClient->ip, class);
  }
}

/*
 * destroy_cidr_list
 *
 * inputs       - pointer to class dlink list of cidr blocks
 * output       - none
 * side effects - completely destroys the class link list of cidr blocks
 */
static void
destroy_cidr_list(dlink_list *list)
{
  dlink_node *ptr = NULL, *next_ptr = NULL;

  DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
  {
    dlinkDelete(ptr, list);
    MyFree(ptr->data);
  }
}

/*
 * destroy_cidr_class
 *
 * inputs       - pointer to class
 * output       - none
 * side effects - completely destroys the class link list of cidr blocks
 */
void
destroy_cidr_class(struct ClassItem *class)
{
  destroy_cidr_list(&class->list_ipv4);
  destroy_cidr_list(&class->list_ipv6);
}
Revision:	1662
Committed:	Sat Nov 17 20:11:33 2012 UTC (12 years, 9 months ago) by michael
Content type:	text/x-csrc
File size:	8230 byte(s)
Log Message:	- Fixed inconsistent svn file properties
#	User	Rev	Content
1	michael	1633	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			*
4			* Copyright (C) 2002 by the past and present ircd coders, and others.
5			*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19			* USA
20			*/
21
22			/*! \file
23			* \brief Configuration managment for class{} blocks
24	michael	1635	* \version $Id$
25	michael	1633	*/
26
27			#include "stdinc.h"
28			#include "list.h"
29	michael	1658	#include "ircd.h"
30	michael	1633	#include "conf.h"
31			#include "client.h"
32	michael	1658	#include "hostmask.h"
33	michael	1633	#include "irc_string.h"
34			#include "memory.h"
35
36
37			struct ClassItem *class_default;
38
39			static dlink_list class_list = { NULL, NULL, 0 };
40
41
42			const dlink_list *
43			class_get_list(void)
44			{
45			return &class_list;
46			}
47
48			struct ClassItem *
49			class_make(void)
50			{
51			struct ClassItem class = MyMalloc(sizeof(class));
52
53	michael	1650	class->active = 1;
54			class->con_freq = DEFAULT_CONNECTFREQUENCY;
55			class->ping_freq = DEFAULT_PINGFREQUENCY;
56			class->max_total = MAXIMUM_LINKS_DEFAULT;
57			class->max_sendq = DEFAULT_SENDQ;
58			class->max_recvq = DEFAULT_RECVQ;
59
60	michael	1633	dlinkAdd(class, &class->node, &class_list);
61
62			return class;
63			}
64
65			void
66			class_free(struct ClassItem *class)
67			{
68			assert(class);
69			assert(class->active == 0);
70			assert(class->ref_count == 0);
71
72			dlinkDelete(&class->node, &class_list);
73			MyFree(class->name);
74			MyFree(class);
75			}
76
77			void
78			class_init(void)
79			{
80	michael	1650	(class_default = class_make())->name = xstrdup("default");
81	michael	1633	}
82
83			const char *
84			get_client_class(const dlink_list *const list)
85			{
86			const dlink_node *ptr = NULL;
87
88			if ((ptr = list->head)) {
89			const struct MaskItem *conf = ptr->data;
90
91			assert(conf->class);
92	michael	1654	assert(conf->type & (CONF_OPER \| CONF_CLIENT \| CONF_SERVER));
93	michael	1633
94			return conf->class->name;
95			}
96
97			return class_default->name;
98			}
99
100			unsigned int
101	michael	1644	get_client_ping(const dlink_list *const list)
102	michael	1633	{
103			const dlink_node *ptr = NULL;
104
105			if ((ptr = list->head)) {
106			const struct MaskItem *conf = ptr->data;
107
108	michael	1654	assert(conf->class);
109			assert(conf->type & (CONF_OPER \| CONF_CLIENT \| CONF_SERVER));
110	michael	1633
111	michael	1644	return conf->class->ping_freq;
112	michael	1633	}
113
114			return class_default->ping_freq;
115			}
116
117			unsigned int
118			get_sendq(const dlink_list *const list)
119			{
120			const dlink_node *ptr = NULL;
121
122			if ((ptr = list->head)) {
123			const struct MaskItem *conf = ptr->data;
124
125			assert(conf->class);
126	michael	1654	assert(conf->type & (CONF_OPER \| CONF_CLIENT \| CONF_SERVER));
127	michael	1633
128			return conf->class->max_sendq;
129			}
130
131			return class_default->max_sendq;
132			}
133
134			unsigned int
135			get_recvq(const dlink_list *const list)
136			{
137			const dlink_node *ptr = NULL;
138
139			if ((ptr = list->head)) {
140			const struct MaskItem *conf = ptr->data;
141
142			assert(conf->class);
143	michael	1654	assert(conf->type & (CONF_OPER \| CONF_CLIENT \| CONF_SERVER));
144	michael	1633
145			return conf->class->max_recvq;
146			}
147
148			return class_default->max_recvq;
149			}
150
151			/*
152			* inputs - Integer (Number of class)
153			* output - Pointer to ClassItem struct. Non-NULL expected
154			* side effects - NONE
155			*/
156			struct ClassItem *
157			class_find(const char *name, int active)
158			{
159			dlink_node *ptr = NULL;
160
161			DLINK_FOREACH(ptr, class_list.head) {
162			struct ClassItem *class = ptr->data;
163
164			if (!irccmp(class->name, name))
165			return active && !class->active ? NULL : class;
166			}
167
168			return NULL;
169			}
170
171			/*
172			* We don't delete the class table, rather mark all entries for deletion.
173			* The table is cleaned up by delete_marked_classes. - avalon
174			*/
175			void
176			class_mark_for_deletion(void)
177			{
178			dlink_node *ptr = NULL;
179
180	michael	1650	DLINK_FOREACH_PREV(ptr, class_list.tail->prev)
181			((struct ClassItem *)ptr->data)->active = 0;
182	michael	1633	}
183
184			void
185			class_delete_marked(void)
186			{
187			dlink_node ptr = NULL, ptr_next = NULL;
188
189			DLINK_FOREACH_SAFE(ptr, ptr_next, class_list.head) {
190			struct ClassItem *class = ptr->data;
191
192			if (!class->active && !class->ref_count)
193			{
194			destroy_cidr_class(class);
195			class_free(class);
196			}
197			}
198			}
199
200			/*
201			* cidr_limit_reached
202			*
203			* inputs - int flag allowing over_rule of limits
204			* - pointer to the ip to be added
205			* - pointer to the class
206			* output - non zero if limit reached
207			* 0 if limit not reached
208			* side effects -
209			*/
210			int
211			cidr_limit_reached(int over_rule,
212			struct irc_ssaddr ip, struct ClassItem class)
213			{
214			dlink_node *ptr = NULL;
215			struct CidrItem *cidr = NULL;
216
217	michael	1644	if (class->number_per_cidr == 0)
218	michael	1633	return 0;
219
220			if (ip->ss.ss_family == AF_INET)
221			{
222	michael	1644	if (class->cidr_bitlen_ipv4 == 0)
223	michael	1633	return 0;
224
225			DLINK_FOREACH(ptr, class->list_ipv4.head)
226			{
227			cidr = ptr->data;
228			if (match_ipv4(ip, &cidr->mask, class->cidr_bitlen_ipv4))
229			{
230			if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
231			return -1;
232			cidr->number_on_this_cidr++;
233			return 0;
234			}
235			}
236			cidr = MyMalloc(sizeof(struct CidrItem));
237			cidr->number_on_this_cidr = 1;
238			cidr->mask = *ip;
239			mask_addr(&cidr->mask, class->cidr_bitlen_ipv4);
240			dlinkAdd(cidr, &cidr->node, &class->list_ipv4);
241			}
242			#ifdef IPV6
243			else if (class->cidr_bitlen_ipv6 > 0)
244			{
245			DLINK_FOREACH(ptr, class->list_ipv6.head)
246			{
247			cidr = ptr->data;
248			if (match_ipv6(ip, &cidr->mask, class->cidr_bitlen_ipv6))
249			{
250			if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
251			return -1;
252			cidr->number_on_this_cidr++;
253			return 0;
254			}
255			}
256			cidr = MyMalloc(sizeof(struct CidrItem));
257			cidr->number_on_this_cidr = 1;
258			cidr->mask = *ip;
259			mask_addr(&cidr->mask, class->cidr_bitlen_ipv6);
260			dlinkAdd(cidr, &cidr->node, &class->list_ipv6);
261			}
262			#endif
263			return 0;
264			}
265
266			/*
267			* remove_from_cidr_check
268			*
269			* inputs - pointer to the ip to be removed
270			* - pointer to the class
271			* output - NONE
272			* side effects -
273			*/
274			void
275			remove_from_cidr_check(struct irc_ssaddr ip, struct ClassItem aclass)
276			{
277			dlink_node *ptr = NULL;
278			dlink_node *next_ptr = NULL;
279			struct CidrItem *cidr;
280
281			if (aclass->number_per_cidr == 0)
282			return;
283
284			if (ip->ss.ss_family == AF_INET)
285			{
286	michael	1644	if (aclass->cidr_bitlen_ipv4 == 0)
287	michael	1633	return;
288
289			DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv4.head)
290			{
291			cidr = ptr->data;
292			if (match_ipv4(ip, &cidr->mask, aclass->cidr_bitlen_ipv4))
293			{
294			cidr->number_on_this_cidr--;
295			if (cidr->number_on_this_cidr == 0)
296			{
297			dlinkDelete(ptr, &aclass->list_ipv4);
298			MyFree(cidr);
299			return;
300			}
301			}
302			}
303			}
304			#ifdef IPV6
305			else if (aclass->cidr_bitlen_ipv6 > 0)
306			{
307			DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv6.head)
308			{
309			cidr = ptr->data;
310			if (match_ipv6(ip, &cidr->mask, aclass->cidr_bitlen_ipv6))
311			{
312			cidr->number_on_this_cidr--;
313			if (cidr->number_on_this_cidr == 0)
314			{
315			dlinkDelete(ptr, &aclass->list_ipv6);
316			MyFree(cidr);
317			return;
318			}
319			}
320			}
321			}
322			#endif
323			}
324
325	michael	1647	void
326			rebuild_cidr_list(struct ClassItem *class)
327	michael	1633	{
328			dlink_node *ptr;
329
330	michael	1647	destroy_cidr_class(class);
331	michael	1633
332			DLINK_FOREACH(ptr, local_client_list.head)
333			{
334	michael	1647	struct Client *client_p = ptr->data;
335			struct MaskItem *conf = client_p->localClient->confs.tail->data;
336	michael	1633
337	michael	1647	if (conf && (conf->type == CONF_CLIENT))
338			if (conf->class == class)
339			cidr_limit_reached(1, &client_p->localClient->ip, class);
340	michael	1633	}
341			}
342
343			/*
344			* destroy_cidr_list
345			*
346			* inputs - pointer to class dlink list of cidr blocks
347			* output - none
348			* side effects - completely destroys the class link list of cidr blocks
349			*/
350			static void
351			destroy_cidr_list(dlink_list *list)
352			{
353			dlink_node ptr = NULL, next_ptr = NULL;
354
355			DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
356			{
357			dlinkDelete(ptr, list);
358			MyFree(ptr->data);
359			}
360			}
361
362			/*
363			* destroy_cidr_class
364			*
365			* inputs - pointer to class
366			* output - none
367			* side effects - completely destroys the class link list of cidr blocks
368			*/
369			void
370			destroy_cidr_class(struct ClassItem *class)
371			{
372			destroy_cidr_list(&class->list_ipv4);
373			destroy_cidr_list(&class->list_ipv6);
374			}