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 "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:	1666
Committed:	Sun Nov 18 17:03:18 2012 UTC (12 years, 9 months ago) by michael
Content type:	text/x-csrc
File size:	8210 byte(s)
Log Message:	- Cleanup unused header file includes - Fixed minor compile warning in conf.c
#	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	michael	1658	#include "hostmask.h"
32	michael	1633	#include "irc_string.h"
33			#include "memory.h"
34
35
36			struct ClassItem *class_default;
37
38			static dlink_list class_list = { NULL, NULL, 0 };
39
40
41			const dlink_list *
42			class_get_list(void)
43			{
44			return &class_list;
45			}
46
47			struct ClassItem *
48			class_make(void)
49			{
50			struct ClassItem class = MyMalloc(sizeof(class));
51
52	michael	1650	class->active = 1;
53			class->con_freq = DEFAULT_CONNECTFREQUENCY;
54			class->ping_freq = DEFAULT_PINGFREQUENCY;
55			class->max_total = MAXIMUM_LINKS_DEFAULT;
56			class->max_sendq = DEFAULT_SENDQ;
57			class->max_recvq = DEFAULT_RECVQ;
58
59	michael	1633	dlinkAdd(class, &class->node, &class_list);
60
61			return class;
62			}
63
64			void
65			class_free(struct ClassItem *class)
66			{
67			assert(class);
68			assert(class->active == 0);
69			assert(class->ref_count == 0);
70
71			dlinkDelete(&class->node, &class_list);
72			MyFree(class->name);
73			MyFree(class);
74			}
75
76			void
77			class_init(void)
78			{
79	michael	1650	(class_default = class_make())->name = xstrdup("default");
80	michael	1633	}
81
82			const char *
83			get_client_class(const dlink_list *const list)
84			{
85			const dlink_node *ptr = NULL;
86
87			if ((ptr = list->head)) {
88			const struct MaskItem *conf = ptr->data;
89
90			assert(conf->class);
91	michael	1654	assert(conf->type & (CONF_OPER \| CONF_CLIENT \| CONF_SERVER));
92	michael	1633
93			return conf->class->name;
94			}
95
96			return class_default->name;
97			}
98
99			unsigned int
100	michael	1644	get_client_ping(const dlink_list *const list)
101	michael	1633	{
102			const dlink_node *ptr = NULL;
103
104			if ((ptr = list->head)) {
105			const struct MaskItem *conf = ptr->data;
106
107	michael	1654	assert(conf->class);
108			assert(conf->type & (CONF_OPER \| CONF_CLIENT \| CONF_SERVER));
109	michael	1633
110	michael	1644	return conf->class->ping_freq;
111	michael	1633	}
112
113			return class_default->ping_freq;
114			}
115
116			unsigned int
117			get_sendq(const dlink_list *const list)
118			{
119			const dlink_node *ptr = NULL;
120
121			if ((ptr = list->head)) {
122			const struct MaskItem *conf = ptr->data;
123
124			assert(conf->class);
125	michael	1654	assert(conf->type & (CONF_OPER \| CONF_CLIENT \| CONF_SERVER));
126	michael	1633
127			return conf->class->max_sendq;
128			}
129
130			return class_default->max_sendq;
131			}
132
133			unsigned int
134			get_recvq(const dlink_list *const list)
135			{
136			const dlink_node *ptr = NULL;
137
138			if ((ptr = list->head)) {
139			const struct MaskItem *conf = ptr->data;
140
141			assert(conf->class);
142	michael	1654	assert(conf->type & (CONF_OPER \| CONF_CLIENT \| CONF_SERVER));
143	michael	1633
144			return conf->class->max_recvq;
145			}
146
147			return class_default->max_recvq;
148			}
149
150			/*
151			* inputs - Integer (Number of class)
152			* output - Pointer to ClassItem struct. Non-NULL expected
153			* side effects - NONE
154			*/
155			struct ClassItem *
156			class_find(const char *name, int active)
157			{
158			dlink_node *ptr = NULL;
159
160			DLINK_FOREACH(ptr, class_list.head) {
161			struct ClassItem *class = ptr->data;
162
163			if (!irccmp(class->name, name))
164			return active && !class->active ? NULL : class;
165			}
166
167			return NULL;
168			}
169
170			/*
171			* We don't delete the class table, rather mark all entries for deletion.
172			* The table is cleaned up by delete_marked_classes. - avalon
173			*/
174			void
175			class_mark_for_deletion(void)
176			{
177			dlink_node *ptr = NULL;
178
179	michael	1650	DLINK_FOREACH_PREV(ptr, class_list.tail->prev)
180			((struct ClassItem *)ptr->data)->active = 0;
181	michael	1633	}
182
183			void
184			class_delete_marked(void)
185			{
186			dlink_node ptr = NULL, ptr_next = NULL;
187
188			DLINK_FOREACH_SAFE(ptr, ptr_next, class_list.head) {
189			struct ClassItem *class = ptr->data;
190
191			if (!class->active && !class->ref_count)
192			{
193			destroy_cidr_class(class);
194			class_free(class);
195			}
196			}
197			}
198
199			/*
200			* cidr_limit_reached
201			*
202			* inputs - int flag allowing over_rule of limits
203			* - pointer to the ip to be added
204			* - pointer to the class
205			* output - non zero if limit reached
206			* 0 if limit not reached
207			* side effects -
208			*/
209			int
210			cidr_limit_reached(int over_rule,
211			struct irc_ssaddr ip, struct ClassItem class)
212			{
213			dlink_node *ptr = NULL;
214			struct CidrItem *cidr = NULL;
215
216	michael	1644	if (class->number_per_cidr == 0)
217	michael	1633	return 0;
218
219			if (ip->ss.ss_family == AF_INET)
220			{
221	michael	1644	if (class->cidr_bitlen_ipv4 == 0)
222	michael	1633	return 0;
223
224			DLINK_FOREACH(ptr, class->list_ipv4.head)
225			{
226			cidr = ptr->data;
227			if (match_ipv4(ip, &cidr->mask, class->cidr_bitlen_ipv4))
228			{
229			if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
230			return -1;
231			cidr->number_on_this_cidr++;
232			return 0;
233			}
234			}
235			cidr = MyMalloc(sizeof(struct CidrItem));
236			cidr->number_on_this_cidr = 1;
237			cidr->mask = *ip;
238			mask_addr(&cidr->mask, class->cidr_bitlen_ipv4);
239			dlinkAdd(cidr, &cidr->node, &class->list_ipv4);
240			}
241			#ifdef IPV6
242			else if (class->cidr_bitlen_ipv6 > 0)
243			{
244			DLINK_FOREACH(ptr, class->list_ipv6.head)
245			{
246			cidr = ptr->data;
247			if (match_ipv6(ip, &cidr->mask, class->cidr_bitlen_ipv6))
248			{
249			if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
250			return -1;
251			cidr->number_on_this_cidr++;
252			return 0;
253			}
254			}
255			cidr = MyMalloc(sizeof(struct CidrItem));
256			cidr->number_on_this_cidr = 1;
257			cidr->mask = *ip;
258			mask_addr(&cidr->mask, class->cidr_bitlen_ipv6);
259			dlinkAdd(cidr, &cidr->node, &class->list_ipv6);
260			}
261			#endif
262			return 0;
263			}
264
265			/*
266			* remove_from_cidr_check
267			*
268			* inputs - pointer to the ip to be removed
269			* - pointer to the class
270			* output - NONE
271			* side effects -
272			*/
273			void
274			remove_from_cidr_check(struct irc_ssaddr ip, struct ClassItem aclass)
275			{
276			dlink_node *ptr = NULL;
277			dlink_node *next_ptr = NULL;
278			struct CidrItem *cidr;
279
280			if (aclass->number_per_cidr == 0)
281			return;
282
283			if (ip->ss.ss_family == AF_INET)
284			{
285	michael	1644	if (aclass->cidr_bitlen_ipv4 == 0)
286	michael	1633	return;
287
288			DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv4.head)
289			{
290			cidr = ptr->data;
291			if (match_ipv4(ip, &cidr->mask, aclass->cidr_bitlen_ipv4))
292			{
293			cidr->number_on_this_cidr--;
294			if (cidr->number_on_this_cidr == 0)
295			{
296			dlinkDelete(ptr, &aclass->list_ipv4);
297			MyFree(cidr);
298			return;
299			}
300			}
301			}
302			}
303			#ifdef IPV6
304			else if (aclass->cidr_bitlen_ipv6 > 0)
305			{
306			DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv6.head)
307			{
308			cidr = ptr->data;
309			if (match_ipv6(ip, &cidr->mask, aclass->cidr_bitlen_ipv6))
310			{
311			cidr->number_on_this_cidr--;
312			if (cidr->number_on_this_cidr == 0)
313			{
314			dlinkDelete(ptr, &aclass->list_ipv6);
315			MyFree(cidr);
316			return;
317			}
318			}
319			}
320			}
321			#endif
322			}
323
324	michael	1647	void
325			rebuild_cidr_list(struct ClassItem *class)
326	michael	1633	{
327			dlink_node *ptr;
328
329	michael	1647	destroy_cidr_class(class);
330	michael	1633
331			DLINK_FOREACH(ptr, local_client_list.head)
332			{
333	michael	1647	struct Client *client_p = ptr->data;
334			struct MaskItem *conf = client_p->localClient->confs.tail->data;
335	michael	1633
336	michael	1647	if (conf && (conf->type == CONF_CLIENT))
337			if (conf->class == class)
338			cidr_limit_reached(1, &client_p->localClient->ip, class);
339	michael	1633	}
340			}
341
342			/*
343			* destroy_cidr_list
344			*
345			* inputs - pointer to class dlink list of cidr blocks
346			* output - none
347			* side effects - completely destroys the class link list of cidr blocks
348			*/
349			static void
350			destroy_cidr_list(dlink_list *list)
351			{
352			dlink_node ptr = NULL, next_ptr = NULL;
353
354			DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
355			{
356			dlinkDelete(ptr, list);
357			MyFree(ptr->data);
358			}
359			}
360
361			/*
362			* destroy_cidr_class
363			*
364			* inputs - pointer to class
365			* output - none
366			* side effects - completely destroys the class link list of cidr blocks
367			*/
368			void
369			destroy_cidr_class(struct ClassItem *class)
370			{
371			destroy_cidr_list(&class->list_ipv4);
372			destroy_cidr_list(&class->list_ipv6);
373			}